CN105815050B - Combine harvester - Google Patents

Abstract

Disclosed is a combine harvester which can avoid the vision of the lower side of a cab at the front side of a driver seat from being blocked by a control operation member or a structure for arranging the control operation member, so that the visibility is improved. In the combine harvester, a front glass is arranged in a range from a shed part (53) of a cab (5) to a position lower than a seat surface (50 a) of a driver seat (50), a steering lever (61) is arranged in the cab (5) at a position offset to one lateral side in the left-right direction from a position right ahead of the driver seat (50), a space part (S0) capable of observing the lower part of the front side of the cab (5) is arranged between the driver seat (50) and the front glass at the position right ahead, and a holding part of the steering lever (61) is arranged at a position higher than the seat surface (50 a) of the driver seat (50).

Description

Combine harvester

The application is a divisional application of an invention patent application with the invention name of a combine harvester, the stage date of entering China is 12 months and 24 days 2012 and the national application number is 201180031160.7.

Technical Field

The invention relates to a combine harvester.

Background

[1] Conventionally, as a combine harvester including a driver seat and a manipulation operating element in a cab, there are configurations described in the following (1) and (2).

(1) A combine harvester including a steering handle at a position forward of a driver seat (see patent document 1 (paragraph "0010", fig. 2 and 4)).

(2) A combine harvester including an instrument panel on the front side of a driver seat and a power steering lever as a steering operation member on the instrument panel (see patent document 2 (paragraph "0007", fig. 1 and 4)).

[2] Further, conventionally, as a combine harvester in which a side panel box is provided on a lateral side of a driver seat in a cab, there are configurations described in the following (3) and (4).

(3) In order to meet the requirement for visual observation from the inside of the cabin to the lower side of the lateral side on which the side panel box is provided, a part of the cabin on the side where the side panel box is present is overlapped on the feeder (see patent document 3 (paragraph "0011", fig. 1 and 2)).

(4) A structure in which the front-rear length of the side box is shortened, the side box is positioned on the rear side far from the front end in the cabin, and the front end side of the side panel box existing on the lateral side of the driver seat is positioned at a position far from the front end edge of the cabin, allows the side portion below the cabin to be visually observed from between the front end of the cabin and the front end of the side box, and allows the window portion formed on the floor surface of the cabin to be visually observed directly below the cabin (see patent document 1 (paragraphs "0009", "0011", fig. 3, 4)).

[3] In the conventional combine harvester, there is a structure in which: in the threshing and sorting structure, a threshing cylinder for performing a threshing process on harvested grain stalks from a harvesting and conveying device by rotating around a threshing cylinder shaft is provided in a threshing chamber, a swing sorting mechanism for swinging and sorting the processed objects leaked from a receiving net covering the lower part of the threshing cylinder by swinging back and forth while transferring the processed objects to the rear is provided below the receiving net, and a windmill for supplying sorting air to the swing sorting mechanism by rotating around a windmill shaft facing to the left and right is provided below the swing sorting mechanism.

In the above-described threshing and sorting structure, there is a structure in which: the stripping drum is configured by a plurality of rod-shaped members provided in a state of being arranged at predetermined intervals in the circumferential direction of the stripping drum in a posture of being oriented in the front-rear direction along a support shaft (stripping drum shaft), and a plurality of stripping teeth provided in a state of being arranged at predetermined intervals in the front-rear direction on the respective rod-shaped members so as to protrude from the rod-shaped members toward the outside of the stripping drum, and is configured to perform a swing sorting process by a swing sorting mechanism and a wind sorting process by sorting wind from a wind turbine on a processed object that has leaked from a receiving net by the stripping process of the stripping drum (see, for example, patent document 4 (paragraphs 0034 to 0037, 0042, 0043, fig. 1 to 5)).

[4] In the conventional combine harvester, there is a structure in which: the transmission structure includes a transmission mechanism for transmitting power from an engine to a left and right windmill shafts, and transmitting the power from the windmill shaft to the harvesting and conveying device and the stroking roller.

As the transmission structure as described above, there are the following structures: the power from the engine transmitted to the windmill drive shaft (windmill shaft) is transmitted to the box input shaft via the belt transmission mechanism, transmitted from the box input shaft to the threshing cylinder via the bevel gear mechanism and the threshing output shaft, and transmitted from the box input shaft to the harvesting unit (harvesting and conveying device) via the positive rotation clutch (see, for example, patent document 5 (paragraph No. 0029, fig. 3)).

[5] In the conventional combine harvester, there is a structure in which: the grain box is supported on the rear side of the grain box so as to be freely wound around a longitudinal axis of a longitudinal posture, and is freely switched between a working posture stored in the self-propelled body and a maintenance posture extending in a transverse direction from the self-propelled body.

As a combine configured as described above, patent document 6 discloses a structure in which a grain tank is supported by a body frame so as to be rotatable by an upper mounting shaft, and a discharger (in the document, a discharge vertical auger) is connected to the rear surface of the grain tank. In patent document 1, a tank-side metal part, an intermediate metal part, and an auger-side metal part are connected to the rear surface side of the grain tank, and a discharger is connected to the auger-side metal part. In patent document 6, the tripper is configured to be extendable and retractable.

In the combine harvester of patent document 6, an intermediate metal part is connected and fixed to a machine frame, and an auger-side metal part is connected to the intermediate metal part so as to be rotatable about a transverse axis, whereby a discharger (discharge auger) is connected so as to be swingable.

Further, the tank-side metal part and the intermediate metal part are coupled to each other by a lower-side longitudinal mounting shaft, and the lower-side longitudinal mounting shaft and the upper-side mounting shaft are coaxially disposed, whereby the tank-side metal part is separated from the intermediate metal part when the grain tank is wound. In patent document 6, a transmission system for transmitting a driving force of a discharge screw provided at the bottom of a grain tank to an auger of a discharger is configured to be separable between an intermediate metal part and a tank-side metal part.

Patent document 1: JP-A10-075634 (JP 10-075634A)

Patent document 2: JP-A10-004749 (JP 10-004749A)

Patent document 3: japanese patent laid-open publication No. 2004-313118 (JP 2004-313118A)

Patent document 4: japanese patent laid-open publication No. 2007-020450 (JP 2007-020450A)

Patent document 5: japanese patent laid-open publication No. 2008-263865 (JP 2008-263865A)

Patent document 6: japanese patent application laid-open No. 2010-098966 (JP 2010-098966A).

Disclosure of Invention

[1] The problems associated with the above background art [ 1 ] are as follows.

In the combine harvester having the structure described in the above (1), the steering handle and the support base thereof are provided directly in front of the driver seat, and the view of the driver seat on the front side is blocked. Therefore, when the operator checks the view of the lower front side of the cockpit, for example, the driving state of the harvesting unit or the harvesting trace, a part of the harvesting unit or the harvesting trace is blocked by the steering handle and the support base thereof, and becomes a blind spot. In order to confirm the portion that is the blind spot, the operator needs to look into the front lower portion by moving his or her body forward, backward, leftward, and rightward, and visibility from the front lower portion of the cabin of the driver seat may be reduced.

In the combine harvester having the structure described in the above (2), the power steering lever as the manipulation operation element is provided on the right side rather than the front position of the driver seat, but the power steering lever is provided on the instrument panel having a wide lateral width existing in front of the driver seat. Therefore, there is a sense of blocking the front side of the driver seat with the instrument panel, and there is an inconvenience that the front lower side of the cabin cannot be visually recognized in a posture of riding on the driver seat.

The invention aims to provide a combine harvester which avoids the obstruction of the view of the lower side of a cab at the front side of a driver seat by a control operation piece or a structure for arranging the control operation piece and has good visibility from the lower side of the front side of the cab of the driver seat.

[2] The problems associated with the above background art [ 2 ] are as follows.

In the combine harvester having the structure described in the above (3), the cab and the operator's seat are brought closer to the center side in the left-right direction of the machine body to some extent. Thus, the feeder is easily visible to some extent on the front side of the feeder existing portion on the side where the side panel box is present, but the side portion side of the cabin is blocked by the side panel box, so that it is difficult to visually observe the lower side of the side portion, and further improvement is desired.

Further, since the side panel box is configured such that a part of the cab on the side where the side panel box is present is overlapped above the feeder, there is a possibility that the arrangement of the operation levers provided in the side panel box is restricted, and the structure becomes complicated.

In the combine harvester having the structure described in the above (4), instead of overlapping a part of the cab on the side where the side panel box exists above the feeder as described in the above (3), the front end side of the side panel box is separated rearward from the front end edge of the cab, and a front-rear direction space is provided between the front glass and the side panel box.

This configuration is useful in that the lower side of the side portion of the cabin on the side where the side panel box is present is easily visible through the gap without complicating the structure that is restricted in the arrangement of the operation levers provided on the side panel box. However, since the front end side of the side panel box is retracted in order to provide the above-described gap, there is a problem that the number and position of the devices disposed on the side panel box are restricted, and in particular, the meters which are intended to monitor while driving with the front view cannot be disposed on the front side, and the side panel box itself is restricted in function.

The invention aims to provide a combine harvester which can easily visually recognize the lower position of the side part of a cab on one side where a side panel box exists from the inside of the cab without causing the reduction of the functions of the side panel box and the complication of the structure.

[3] The problems associated with the above background art [ 3 ] are as follows.

In the configuration described in patent document 4, since the stroking cylinder is configured as a so-called rod-shaped stroking cylinder having a space communicated with the stroking chamber in the interior thereof, even when a large amount of grain stalks are supplied to the stroking chamber as the threshing processed matter, the internal space of the stroking cylinder can be effectively used as the processing space for the stroking processing, and thus the stroking processing can be performed on the large amount of the threshing processed matter supplied to the stroking chamber without causing the retention of the threshing processed matter in the processing space and the saturation of the processing space, and the stroked processed matter can be supplied to the swing sorting mechanism.

Further, although the swing sorting process by the swing sorting means and the wind sorting process by the sorting wind from the wind turbine are performed on the processed object supplied to the swing sorting means, since the sorting wind is supplied only from the wind turbine disposed in front of and below the swing sorting means, when a large amount of the processed object is supplied to the swing sorting means, the sorting wind amount is insufficient, the sorting accuracy of the wind sorting process is lowered, and thus the amount of the processed object staying in the swing sorting means is increased, and there is a possibility that the sorting accuracy of the swing sorting process is also lowered.

The invention aims to ensure high sorting precision even when a large amount of processed objects are supplied to a swinging sorting mechanism.

[4] The problems associated with the above background art [ 4 ] are as follows.

The grains harvested by the combine harvester are not only hard and hard to be damaged such as rice and wheat, but also soft and easily damaged such as soybeans. When a combine is used to harvest rice, wheat, and the like, the stripping drum is generally rotated at a relatively high speed in order to improve the processing capacity, and when soybeans are harvested, the stripping drum is generally rotated at a relatively low speed in order to prevent deterioration in quality due to damage during stripping.

Therefore, in the combine harvester adopting the transmission structure described in patent document 5, for example, in the case of harvesting rice, wheat, and the like and in the case of harvesting soybeans, it is conceivable to change the transmission ratio in the belt transmission mechanism by replacing the transmission pulley of the belt transmission mechanism, and to switch the rotation speed of the stripping drum between the high speed for rice and wheat and the low speed for soybeans. However, in the transmission structure described in patent document 5, if the gear ratio of the belt transmission mechanism is increased so that the rotation speed of the stripping roller becomes low for soybeans, the driving speed of the harvesting conveyor also becomes low, which causes a problem that the harvesting performance or the conveying speed in the harvesting conveyor decreases. In order to avoid such a problem, when the rotation speed of the stripping roller is set to a low speed for soybeans, not only the transmission pulley of the belt transmission mechanism needs to be replaced to increase the gear ratio of the belt transmission mechanism, but also the transmission pulley of the positive rotation clutch needs to be replaced to decrease the gear ratio of the positive rotation clutch in order to compensate for a decrease in the drive speed of the harvesting conveyor caused by increasing the gear ratio of the belt transmission mechanism.

That is, in the combine harvester employing the transmission structure described in patent document 5, in order to switch the rotation speed of the stripping drum to the high speed for rice and wheat and the low speed for soybean without causing a reduction in the harvesting performance and the conveying speed in the harvesting and conveying device, it is necessary to change the gear ratio of the positive rotation clutch together with the gear ratio of the belt transmission mechanism, and therefore there is room for improvement in terms of the ease of the work required to switch the rotation speed of the stripping drum.

The purpose of the present invention is to easily switch the rotation speed of a stripping roller between a high speed for rice and wheat and a low speed for soybean without causing a reduction in harvesting performance and a reduction in conveying speed in a harvesting and conveying device by simply improving the transmission structure of a combine harvester.

[5] The problems associated with the above background art [ 5 ] are as follows.

In the structure in which the grain tank is allowed to be wound by separating the grain from the grain tank to the discharger in the path described in patent document 6, there is room for improvement in that not only the structure is complicated but also the number of parts is increased.

Further, the length of the discharger is limited to a size such that the end on the discharge side does not protrude largely upward from the grain tank in a state of being set to the storage posture (the vertical posture). For this reason, the discharge position of the grains is also determined when the discharger is swung to discharge the grains in the grain box in the lateral direction and the end portion on the discharge side is directed in the lateral direction. In response to such a demand, it is conceivable to configure the tripper so as to be extendable and retractable as shown in patent document 6, but this configuration has room for improvement in terms of complication of the structure and increase in the number of components.

The invention aims to reasonably construct a combine harvester, which can realize simplification of a structure for winding a grain tank and swinging a discharger and can ensure that a discharging position of grains from the discharger is far away from a self-propelled machine body without lengthening the size of the discharger.

[1] The solution corresponding to the above problem [ 1 ] is as follows.

A combine, is equipped with driver's seat and operating element for operating in the cockpit, set up the front glass set up between a pair of front posts of left and right sides of the above-mentioned driver's cabin in the range from the shed portion of the above-mentioned driver's cabin to leaning on the lower side than the seat surface of the above-mentioned driver's seat; the steering operation control device is configured by a steering lever for operating the steering operation, the steering lever is arranged in a cab at a position shifted to one lateral side in the left-right direction from a position immediately in front of the driver seat, a space capable of observing the lower part of the front side of the cab is formed between the driver seat and a front glass at the position immediately in front of the driver seat, and a grip portion of the steering lever is provided at a position higher than a seat surface of the driver seat.

According to the above configuration, the front glass is provided in a range extending from the ceiling portion of the cabin to a position below the seat surface of the driver seat, and the steering lever that can be operated by one hand is used as the operation element for the steering operation, and the steering lever is provided on one lateral side that is offset from the position directly in front of the driver seat, and the portion that blocks the front view, such as the steering operation element or the structure for attaching the steering operation element, is removed from the position directly in front of the driver seat.

This makes it possible to provide a space between the driver's seat and the front glass at the position directly in front, through which the lower part of the front side of the cockpit can be observed, and thus to improve visibility of the lower part of the front side of the cockpit in a state of riding on the driver's seat.

Further, by providing the grip portion of the steering lever at a position higher than the seat surface of the driver seat, the grip portion can be provided in a state where the steering lever is also excellent in operability.

In a preferred embodiment, the steering lever is supported by the front pillar.

According to the above configuration, since the steering lever is supported by the front pillar, it is not necessary to provide a support stand or the like for supporting the steering lever in particular, and the front pillar can be used as the support mechanism, which is advantageous in that the structure can be simplified and downsized.

In a preferred embodiment, the front glass is provided so as to bulge forward from a front edge of a floor surface of the cab; the front pillar located at the connecting portion between the lateral end edge of the front glass and the front end edge of the lateral side surface of the cabin is provided along the shape of the lateral end edge of the front glass, and the upper side of the front pillar is located forward of the mounting portion to the floor surface of the cabin.

According to the above configuration, since the front glass is provided so as to bulge forward from the front edge of the floor surface of the cabin, it is easier to see the front lower side of the cabin than in the case where the front glass is provided so as to stand vertically from the front edge of the floor surface of the cabin or the case where the front glass is provided so that the upper side thereof is inclined rearward from the front edge of the floor surface of the cabin.

In a preferred embodiment, the steering lever is disposed in front of a lower end of the front pillar in a vicinity of a lateral side of the cabin on which the landing door is provided.

By providing the steering lever on the front side of the lower end of the front pillar in this way, the steering lever is less likely to interfere with the boarding and alighting of the driver into and out of the cab. That is, when the driver gets on and off from the entrance of the cabin where the entrance door is provided, since the driver gets on and off from the floor surface of the cabin in a position rearward of the lower end of the front pillar, there is an advantage that the steering lever located forward of the lower end of the front pillar is less likely to hit the body of the driver.

This configuration is particularly advantageous when the steering lever has a shape along the lateral end edge of the front glass and the upper side is located forward of the mounting location to the floor surface of the cabin.

In a preferred embodiment, the above-mentioned steering lever is equipped on the upper side of the box main body equipped with the key switch; the box main body includes a front surface that is inclined to be forward toward an end portion side in the lateral direction of the cabin and rearward toward a center side in the lateral direction of the cabin in a plan view, and a rear surface that is inclined to be forward toward the end portion side in the lateral direction of the cabin and rearward toward the center side in the lateral direction of the cabin in a plan view.

According to the above configuration, the width of the box body in the horizontal direction when the box body is viewed by the operator riding on the driver seat is seen to be short, and the field of view of the operator can be ensured to be large.

That is, when the box main body is viewed from the driver seat side which is the existing position of the operator in a plan view, for example, if the box main body is formed of a simple rectangular structure with the front side facing the front side of the machine body and the rear side facing the rear side of the machine body, the horizontal width of the box main body as viewed from the driver's seat side is configured to be wide corresponding to the length in the diagonal direction connecting the corner portion at the center side in the lateral direction of the cabin on the front surface side of the box main body and the corner portion at the end side in the lateral direction of the cabin on the rear surface side of the box main body, but here, since the box main body is provided with the inclined surfaces on the front surface side and the rear surface side as described above, therefore, compared to the case where the box body is formed in a rectangular shape, the box body has a shorter width in the horizontal direction as viewed from the driver seat side, and thus the field of view of the operator can be secured to a larger extent.

In a preferred embodiment, the steering lever is supported by an armrest disposed at a side portion of a seating surface of the driver seat.

According to the above configuration, there is an advantage that the steering lever can be gripped with good operability in a state where the elbow is stably supported by the armrest while maintaining good visibility to the lower front of the cabin by supporting the steering lever with the armrest at a position deviated from the forward field of view of the operator riding on the driver's seat.

[2] The solution corresponding to the above problem [ 2 ] is as follows.

A combine harvester, a side panel box is arranged at the lateral side part of a driver seat in a driver cabin, the side panel box comprises: a main case portion in which a shift lever for traveling is disposed; an electrical component arrangement section located on a front end side of the case main section and on which electrical components are arranged; further, by positioning the electrical component arrangement portion at a distance from the floor surface of the cabin, an open space is formed below the electrical component arrangement portion so that the side portion of the cabin on the side where the side panel box is present can be viewed from below the driver seat side.

According to the above configuration, the case main portion of the side panel case, in which the shift lever for traveling is disposed, is formed in a box shape by requiring a link mechanism or the like for the transmission device for traveling to be disposed, but the electrical component arrangement portion does not need to be provided with a mechanical linkage mechanism such as a link mechanism or the like with other devices, and only the electrical wiring may be disposed, so that a space can be formed below the electrical component arrangement portion.

Therefore, the electrical component arrangement portion in the side panel box, in which the electrical components are arranged, is located on the front end side of the side panel box that is easy for an operator seated on the driver's seat to visually recognize, and the electrical component arrangement portion is located at a distance from the floor surface of the cabin, whereby an open space that can visually see below the side portion of the cabin on the side where the side panel box is located is formed below the electrical component arrangement portion.

This configuration has an advantage that the structure is not complicated, which is restricted in the arrangement of the shift levers and the like provided on the side panel box, and the lower side of the side portion of the cabin can be visually observed through the open space while maintaining a good visibility of the electrical component arrangement portion from the driver seat side.

In a preferred embodiment, the front glass of the cabin is formed into an inclined surface bulging to the front upper side than a front end edge of a floor surface of the cabin, and a front end edge of the box main portion is formed into a shape along the inclined surface of the front glass in a side view.

According to the above configuration, the front end edge of the tank main portion is formed along the inclination of the front glass inclined upward in the front direction, and the front end edge of the tank main portion is also inclined upward in the front direction.

Therefore, compared to the case where the front end edge of the box main portion is erected simply perpendicularly to the floor surface of the cabin, the amount of projection from the electrical component arrangement portion to the mounting portion of the box main portion is reduced as much as possible on the upper side of the box main portion to ensure the supporting strength, and the space between the front glass and the lower side of the box main portion is maintained as large as possible, which has an advantage that good visibility can be obtained on the lower side of the side portion of the cabin.

In a preferred embodiment, the box main portion includes a shift lever for traveling disposed on an outer portion farther from a driver seat in a left-right direction of the body, a switch operating element disposed on an inner portion closer to the driver seat, and a recessed space recessed in a direction away from the driver seat is provided in a lower portion of an inner portion closer to the driver seat where the switch operating element is disposed.

According to the above configuration, the case main portion on which the shift lever for traveling is disposed is formed in a box shape by requiring a link mechanism or the like for a transmission for traveling to be disposed, but in the inner portion on which the switch operation member is disposed, it is not necessary to dispose a mechanical linkage mechanism such as a link mechanism or the like with other devices, and only the electric wiring needs to be disposed, so that a space can be formed below the inner portion on which the switch operation member is disposed.

Therefore, the advantage is obtained that the floor surface in the cabin is enlarged even slightly, and the foot margin of the operator seated on the driver seat can be secured as large as possible by positioning the inner portion on which the switch operating element is disposed closer to the driver seat than the box main portion on which the shift lever for traveling or the like is disposed, and providing the recessed space recessed in the direction away from the driver seat in the lower portion of the inner portion.

In a preferred embodiment, a front end portion of an inner portion of the box main portion, on which the switch operation element is disposed, is formed in a position near a rear side of a connection portion with the electrical component arrangement portion.

According to the above configuration, since the front end of the inner portion on the near side from the driver seat is formed at the position rearward of the connection point with the electrical component arrangement portion, it is advantageous in that the field of view from the driver seat side to the lower side of the front side portion can be easily made larger than in the case where the front end of the inner portion is formed at the same position as the connection point with the electrical component arrangement portion or at the position near the front side of the connection point with the electrical component arrangement portion.

In a preferred embodiment, the traveling shift lever provided in the case main portion is inclined so that the grip portion side thereof is closer to the side where the driver seat is present than the base end portion side thereof.

According to the above configuration, even if the side panel box is disposed close to the lateral side portion of the cabin, since the grip portion side of the shift lever for traveling provided in the side panel box is inclined so as to be closer to the driver seat side than the base end portion side, there is less possibility of occurrence of inconvenience such as a lever operation performed by extending a hand farther from the driver seat side, and of inconvenience such as a hindrance of contact between the hand or arm of the operator who grips the shift lever and another object in the lateral side portion of the cabin.

[3] The solution corresponding to the above problem [ 3 ] is as follows.

A combine harvester comprises a stripping roller in a stripping chamber, the stripping roller performs stripping treatment on the reaping stalks from a reaping and conveying device by rotating around a stripping roller shaft, a receiving net covers the lower part side of the stripping roller, a swinging sorting mechanism is arranged below the receiving net, the swing sorting mechanism swings and sorts the processed objects leaked from the receiving net by swinging back and forth, and the windmill is arranged at the front lower part of the swing sorting mechanism, the windmill is configured to supply sorting air to the swing sorting mechanism by rotating around a windmill shaft facing left and right, the stripping roller is configured by a plurality of rod-shaped members and a plurality of stripping teeth, a plurality of bar-shaped members provided at a predetermined interval in a circumferential direction in an outer circumferential portion thereof in a posture along the stripping roller shaft, the plurality of stripping teeth protruding from the respective bar-shaped members outward of the stripping roller; an auxiliary wind turbine is provided above the wind turbine and in front of the swing sorting mechanism, and the auxiliary wind turbine rotates about an auxiliary wind turbine shaft facing left and right to supply the sorting wind for rough sorting to the swing sorting mechanism.

In this case, since the stroking cylinder is configured as a so-called rod-shaped stroking cylinder having a space communicating with the stroking chamber in the interior thereof, even when a large amount of grain stalks are supplied to the stroking chamber as the threshing processed matter, the interior space of the stroking cylinder can be effectively used as the processing space for the stroking processing, and thus the stroking processing can be performed on the large amount of the threshing processed matter supplied to the stroking chamber without causing the retention of the threshing processed matter in the processing space and the saturation of the processing space, and the stroking processed matter can be supplied to the swing sorting mechanism.

Further, the sorting air from the wind turbine and the sorting air from the sub-wind turbine can be supplied to the processed object supplied by the swing sorting mechanism, whereby a required amount of sorting air can be secured even when a large amount of the processed object is supplied to the swing sorting mechanism, and as a result, a decrease in sorting efficiency and sorting accuracy in the wind sorting process due to a shortage of the sorting air volume can be prevented, and a decrease in sorting efficiency and sorting accuracy in the swing sorting process due to an increase in the amount of the processed object remaining in the swing sorting mechanism due to a shortage of the sorting air volume can be prevented.

Therefore, high stroking performance can be ensured in which sufficient stroking can be performed on a large amount of the threshing processed matter even when a large amount of the grain stalks are supplied to the stroking chamber as the threshing processed matter, and high sorting efficiency and sorting accuracy can be ensured even when a large amount of the processed matter is supplied to the swing sorting mechanism by the stroking.

In a preferred embodiment, the forward swing limit position of the tip end of the swing sorting mechanism is set to a position directly above or in the vicinity of the windmill shaft of the windmill, and the forward swing limit position of the tip end of the swing sorting mechanism is made to coincide or substantially coincide with the tip end of the receiving net in the front-rear direction, and the secondary windmill is installed in a housing space formed in a position directly above the front half of the windmill in a state where the tip end of the windmill coincides or substantially coincides with the tip end of the secondary windmill in the front-rear direction.

According to this configuration, the forward swing limit position of the tip end of the swing sorting mechanism, the windmill shaft of the windmill, and the tip end of the receiving net are arranged on the vertical line or the substantially vertical line, so that the swing sorting mechanism can be prevented from swinging unnecessarily forward of the tip end position of the receiving net, and a large housing space can be secured in front of the swing sorting mechanism above the first half of the windmill.

Therefore, a threshing and sorting structure having good sorting performance can be obtained, which can ensure higher sorting accuracy.

In a preferred embodiment, a leakage prevention mechanism is provided across the support member supporting the front end of the receiving net and the front end of the swing sorting mechanism, the leakage prevention mechanism preventing the processed object from leaking to the front side of the swing sorting mechanism.

According to this configuration, the swing sorting mechanism can reliably supply the processed object that has leaked from the leading end portion of the receiving net to the swing sorting mechanism while preventing the swing sorting mechanism from swinging unnecessarily forward of the leading end position of the receiving net, and the swing sorting process by the swing sorting mechanism can be performed.

Therefore, the grain recovery rate can be prevented from being reduced due to the processed object leaking to the front of the swing sorting mechanism.

In a preferred embodiment, the wind turbine and the sub-wind turbine are configured such that the tips thereof coincide or substantially coincide with the tip of the stripping drum in the front-rear direction.

According to this configuration, as compared with the case where the wind turbine provided in the front and lower portion of the swing sorting mechanism is disposed rearward so that the tip thereof is positioned rearward of the tip of the stripping drum, the length of the grain sieve for fine sorting provided in the lower portion of the swing sorting mechanism can be made longer in the front-rear direction, and the time required for the sorting process by the grain sieve can be made longer.

Further, the sub-wind turbine can be compactly arranged in a state in which the protrusion of the sub-wind turbine from the front end of the stripping drum to the front side is greatly suppressed or in a state in which the sub-wind turbine does not protrude to the front side.

Therefore, the grain collection efficiency can be improved without causing a reduction in the separation accuracy while suppressing or preventing an increase in the size of the threshing and separating structure provided with the sub-wind turbine.

In a preferred embodiment, a rear end of the stroking roller is located rearward of a rear end of the receiving net; the rear end side of the swing sorting mechanism is extended rearward so that the rear end of the swing sorting mechanism is located in the vicinity of the rear end of the stroking roller rearward of the rear end of the receiving net.

According to this configuration, the length of the stroking cylinder and the receiving net can be increased, and thus the stroking space between the stroking cylinder and the receiving net can be increased, and the stroking capacity can be improved.

Further, the processed object that has leaked from the rear end portion of the receiving net can be reliably supplied to the swing sorting mechanism, and the swing sorting process by the swing sorting mechanism can be performed.

Therefore, while the stripping processing capacity is improved, the reduction of the grain recovery rate caused by the processed object leaking from the receiving net to the rear of the swing sorting mechanism can be prevented.

In a preferred embodiment, a pair of left and right front pillar members and a pair of left and right rear pillar members supporting a front side of a threshing section provided with the stroking roller and the receiving net stand from front and rear with air inlets for a windmill formed at both left and right end portions of a windmill casing interposed therebetween; a windmill support member extending in the front-rear direction across the lower portion of the front pillar member and the lower portion of the rear pillar member on the same left and right sides, and rotatably supporting left and right end portions of the windmill shaft, so as to cross the air intake port for the windmill; further, a front-rear oriented sub-windmill support member is provided so as to cross the sub-windmill intake ports formed at both left and right end portions of the sub-windmill box, and spans over an upper portion of the front pillar member and an upper portion of the rear pillar member located on the same left and right sides, and the front-rear oriented sub-windmill support member rotatably supports the left and right end portions of the sub-windmill shaft.

According to this configuration, the wind turbine and the sub-wind turbine can be supported by the pair of left and right front pillar members and the pair of left and right rear pillar members, which are configured to have high strength for supporting the front portion side of the trough portion.

In a preferred embodiment, auxiliary air inlets for auxiliary windmills are formed in the left and right auxiliary wind turbine support members.

According to this configuration, it is possible to improve the amount of air taken into the sub-wind turbine, which tends to be insufficient when the sub-wind turbine support member crosses the air inlet for the sub-wind turbine, and to satisfactorily perform wind separation by the separation wind from the sub-wind turbine.

[4] The solution corresponding to the above problem [ 4 ] is as follows.

A combine harvester is provided with a transmission mechanism, wherein the transmission mechanism transmits power from an engine to a windmill shaft facing left and right, and is formed by transmitting the power from the windmill shaft to a harvesting and conveying device and a stripping roller.

According to this configuration, even if the speed ratio of the stripping drum transmission system is changed to switch the rotational speed of the stripping drum between the high speed for rice and wheat and the low speed for soybean, the transmission to the harvesting conveyor is not performed via the stripping drum transmission system, so that the driving speed of the harvesting conveyor can be maintained constant.

That is, by implementing a simple improvement in which the harvesting and conveying transmission system and the stroking cylinder transmission system are provided in parallel in the transmission mechanism, the rotational speed of the stroking cylinder can be simply switched between the high speed for rice and wheat and the low speed for soybean without causing a decrease in harvesting performance and conveying speed in the harvesting and conveying device by simply changing the gear ratio in the stroking cylinder transmission system.

In a preferred embodiment, the power transmission mechanism is configured to transmit power from the engine to one end portion of the windmill shaft, to transmit the power from the one end portion of the windmill shaft to one end portion of an idler shaft facing left and right, and to transmit the power from the idler shaft to the harvesting and conveying transmission system and the stripping drum transmission system in parallel; the stroking-out roller transmission system is provided with a transmission mechanism having a pair of transmission rotating bodies, and the other end portion of the idler shaft is extended outward in the lateral direction so as to be positioned at the lateral end of the vehicle body, and the transmission mechanism is linked and connected to the other end portion of the idler shaft.

According to this configuration, the load acting on the windmill shaft can be reduced as compared with the case where the power from the engine is transmitted from the windmill shaft to the transmission mechanism for harvesting and conveying and the transmission mechanism for the stroking-out drum without passing through the idler shaft, and the case where the power is transmitted from the other end portion of the windmill shaft to the idler shaft.

Further, since the transmission mechanism is located at the lateral end of the vehicle body, the change of the gear ratio in the stroking-out drum transmission system by replacing the transmission rotor provided in the transmission mechanism is easily performed from the lateral outside of the vehicle body.

Therefore, the structure in which the power from the engine is transmitted through the harvesting and conveying device with a large axial load of the windmill and the stroking-out drum can improve the durability of the windmill shaft, and the rotation speed of the stroking-out drum can be switched to a high speed for rice and wheat and a low speed for soybean more easily.

In a preferred embodiment, the transmission mechanism is configured such that the transmission to the stripping roller is switched to two stages of high and low by switching the pair of transmission rotating bodies to the idler shaft and the transmission shaft on the downstream side in the transmission direction, which are linked via the transmission mechanism.

According to this configuration, the speed ratio in the transmission mechanism can be reduced by replacing the idler shaft and the transmission shaft on the downstream side in the transmission direction with the pair of transmission rotating bodies, and the speed ratio in the stripping roller transmission system can be changed to a smaller speed ratio for rice and wheat. Conversely, by increasing the gear ratio in the transmission mechanism, the gear ratio in the disentangling drum transmission system can be changed to a larger gear ratio for soybeans.

That is, in the configuration in which the speed ratio in the disentangling drum transmission system can be changed to the speed ratio for rice and wheat and the speed ratio for soybean, it is not necessary to provide a transmission case or the like for the disentangling drum, and it is also not necessary to provide a pair of dedicated transmission rotors for obtaining the speed ratio for rice and wheat and a pair of dedicated transmission rotors for obtaining the speed ratio for soybean.

In a preferred embodiment, the pair of transmission rotating bodies are configured by a hub portion integrally rotatably fitted on one of the idler shaft and the transmission shaft on the transmission direction downstream side, which are interlocked and coupled via the transmission mechanism, and an outer peripheral portion integrally rotatably bolted to the hub portion from the lateral outside, and the transmission to the stripping roller is switched to two stages of high and low by switching the outer peripheral portion to the hub portion.

According to this configuration, it is not necessary to provide a transmission case or the like for the stroking-out roller, and the change of the gear ratio in the transmission mechanism can be easily performed as compared with a structure in which the entire transmission rotor including the boss portion tightly fitted to the idler shaft or the transmission shaft on the downstream side in the transmission direction is replaced.

In a preferred embodiment, a transmission rotating body provided on the most upstream side in the transmission direction of the harvesting conveyor transmission system is integrally rotatably connected to the other end portion of the idler shaft, and the hub portion externally fitted to the idler shaft is integrally formed at the other end portion of the transmission rotating body.

According to this structure, simplification of the structure and cost reduction due to reduction in the number of parts can be achieved.

In a preferred embodiment, a cover is detachably provided to cover the transmission mechanism from the lateral outside of the vehicle body.

According to this configuration, the transmission mechanism located at the lateral end of the vehicle body can be normally covered with the cover, and the speed ratio in the stroking-out drum transmission system can be changed by replacing the transmission rotor provided in the transmission mechanism by removing the cover.

In a preferred embodiment, the stripping drum transmission system is configured to transmit power to the stripping drum via a bevel gear type transmission mechanism, the bevel gear type transmission mechanism is provided with a bevel gear for taking out reverse rotation power, the transmission mechanism is configured to transmit power from the bevel gear for taking out reverse rotation power to the harvesting conveyor via the transmission mechanism for taking out reverse rotation power, and the harvesting conveyor transmission system and the transmission mechanism for taking out reverse rotation power can be switched between a transmission state and a cutting state.

According to this configuration, the harvesting conveyor system is set to the transmission state and the transmission mechanism for reverse rotation is set to the cutoff state during the harvesting operation, so that the harvesting conveyor can be driven in forward rotation to harvest the grain stalks. In addition, when the harvesting conveyor is clogged, the harvesting conveyor can be driven in reverse rotation by switching the harvesting conveyor transmission system to the cutoff state and switching the reverse rotation transmission mechanism to the transmission state, and the grain stalks clogged in the harvesting conveyor can be easily removed.

That is, the maintainability can be improved when the straw clogging occurs in the harvesting conveyor.

[5] The solution corresponding to the above problem [ 5 ] is as follows.

A combine harvester, have grain tanks on the self-propelled organism, have tripper that the kernel of the grain tank discharges through the discharge screw in the rear side of the above-mentioned grain tank; the grain tank is supported to be rotatable around a longitudinal axis of a longitudinal posture at a rear side of the grain tank so as to be switchable between a working posture stored in the self-propelled body and an inspection posture extending in a lateral direction from the self-propelled body, and the tripper is provided to be swingable around a swing axis of a front-rear facing posture so as to be switchable between a storage posture in which the discharge side end portion faces upward and a discharge posture in which the discharge side end portion faces outward; the tripper is connected and supported on the rear surface of the grain tank through a joint mechanism which supports the tripper in a manner of freely swinging around the swinging axis, and the position of the swinging axis is arranged outside the position of the vertical axis in the width direction of the self-propelled machine body.

According to this structure, when the grain tank is wound around the longitudinal axis, the auger is integrally wound with the grain tank. That is, it is not necessary to provide a structure for allowing the grain tank to be separated from the base end portion of the auger as described in patent document 1. Further, since the swing axis is disposed outside the longitudinal axis in the width direction of the self-propelled body, the swing axis can be disposed outside the grain tank without being hindered by the longitudinal axis, and when the discharge-side end portion of the auger is directed in the lateral direction by swinging, the discharge-side end portion can be further separated from the self-propelled body more largely than a structure in which the swing axis is located on the center side of the self-propelled body.

Therefore, the structure that can wind the grain tank and swing the discharger is simplified, and the combine harvester that can separate the grain discharge position from the discharger from the self-propelled body without increasing the size of the discharger is configured.

In a preferred embodiment, the grain tank further includes a bottom screw for conveying the grains in the bottom of the grain tank to the rear side, a bent pipe unit for conveying the grains from the bottom screw to the discharge screw, the joint mechanism being formed on the base end side of the bent pipe unit, and a bevel gear mechanism for transmitting the rotational force of the bottom screw to the discharge screw being provided in the bent pipe unit.

Accordingly, the grains stored in the grain tank are conveyed from the bottom screw to the pipe bending unit, and from the pipe bending unit to the discharge screw of the auger, thereby discharging the grains. Further, since the bevel gear mechanism is provided inside the elbow unit, the transmission structure is simplified.

In a preferred embodiment, the longitudinal axis is disposed on the front side of the rotational axis of the discharge screw of the discharger.

Accordingly, since the vertical axis can be disposed at a position close to the grain tank, the arm for supporting the grain tank in a freely rotatable manner can be prevented from being enlarged. Further, since the rotation axis of the discharge screw is disposed rearward of the vertical axis, even if a columnar member (a member that supports the grain tank so as to be freely wound) is disposed coaxially with the vertical axis, for example, interference between the member and the discharger can be avoided.

In a preferred embodiment, a column member disposed coaxially with the longitudinal axis is coupled to the grain tank, the column member is supported by the self-propelled body so as to be freely rotatable about the longitudinal axis, and the column member and the tripper in the storage posture are disposed at positions partially overlapping in a rear view in a state where the grain tank is in the operation posture.

Accordingly, the vertical dimension of the pillar-like member can be easily increased, and the grain tank can be stably supported by the pillar-like member in a freely rotatable manner. In addition, since the pillar-like member and the tripper are close to each other in the lateral width direction of the self-propelled machine body, they can be arranged in a small space.

In a preferred embodiment, the attitude maintaining mechanism for maintaining the swing attitude of the ejector includes a support body provided on the columnar member, an engaging plate provided on an outer wall surface of the ejector and having a plurality of engaging portions along a longitudinal direction of the ejector, and a connecting rod having one end supported on the support body and the other end capable of being selectively engaged with any one of the plurality of engaging portions of the engaging plate.

Accordingly, since the pillar-shaped member rotates integrally with the grain tank around the longitudinal axis during the winding of the grain tank, the support body provided in the pillar-shaped member, the engaging plate of the tripper, and the connecting rod rotate integrally during the winding of the grain tank, and the relative positional relationship therebetween does not change. According to such a configuration, for example, as in the case of a configuration in which one end of the connecting rod is supported by the fixing system, a configuration in which one end of the connecting rod is rotatably supported by the fixing system in order to allow the grain tank to be wound is not required, and the configuration of the posture maintaining mechanism is simplified. Further, by engaging the other end of the connecting rod, one end of which is supported by the support body, with any one of the plurality of engaging portions of the engaging plate provided on the outer wall surface of the tripper, the swinging posture of the tripper can be maintained without any difficulty.

Other features and advantageous effects of the present invention will become apparent from the following description when read in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a diagram showing a combine harvester 1 according to an embodiment of the present invention (hereinafter, the same as fig. 18), and is a right side view of a general-type combine harvester shown as an example of such a combine harvester.

Fig. 2 is a left side view of a general type combine.

Fig. 3 is a plan view of a general type combine harvester.

Fig. 4 is a right side view of the cockpit.

Fig. 5 is a front view of the cockpit.

Fig. 6 is a left side view of the cockpit.

Fig. 7 is a rear view of the cockpit.

Fig. 8 is a cross-sectional top view of the cockpit.

Fig. 9 is a longitudinal sectional front view of the cab.

Fig. 10 is a cross-sectional view taken along line X-X of fig. 9.

Fig. 11 is a cross-sectional view taken along line XI-XI of fig. 9.

Fig. 12 is an explanatory diagram showing a state in which the boarding/alighting door is slightly opened in the vicinity of the front pillar and the console box in the right front of the cabin.

Fig. 13 is a cross-sectional view taken along line XIII-XIII of fig. 12.

Fig. 14 is a schematic sectional view showing a floor surface portion of a cabin in another embodiment.

Fig. 15 is a schematic plan view showing another side box portion.

Fig. 16 is a schematic plan view showing another side box portion.

Fig. 17 is a schematic plan view showing the vicinity of an inner gripping member in another embodiment.

Fig. 18 is a schematic plan view showing a steering lever mounting portion in another embodiment.

Fig. 19 is a diagram showing embodiment 2 of the combine harvester of the present invention (hereinafter, the same as fig. 27), and is an overall left side view of a general-type combine harvester shown as an example of such a combine harvester.

Fig. 20 is an overall plan view of a general type combine harvester.

Fig. 21 is a longitudinal left side view of the threshing apparatus.

Fig. 22 is a left side view of the threshing apparatus with the covers removed.

Fig. 23 is a front view of the threshing device showing the transmission structure.

Fig. 24 is an upper side rear view of the threshing apparatus.

Fig. 25 is a schematic view showing a transmission structure of a general type combine.

Fig. 26 is a longitudinal front view showing a main part of a configuration of a transmission mechanism for a stripping roller.

Fig. 27 is a vertical cross-sectional side view showing a main part of a support structure for an input shaft for a stripping drum, an input shaft for harvesting conveyance, and an idler shaft.

Fig. 28 is a diagram showing embodiment 3 of the combine harvester of the present invention (hereinafter, the same goes through fig. 36), and is an overall right side view of a general-type combine harvester shown as an example of such a combine harvester.

Fig. 29 is an overall plan view of a general type combine harvester.

Figure 30 is a side view showing the rear of the grain bin and the tripper.

Fig. 31 is a rear view showing the tripper and the prop member.

Fig. 32 is a longitudinal sectional side view of the elbow unit section.

Figure 33 is a cross sectional top view of the tripper and the prop member.

FIG. 34 is a rear view showing the base end portions of the tripper and the stay-like member.

Fig. 35 is a conceptual diagram of the drain clutch.

Fig. 36 is a rear view showing the discharger in a swing state.

Detailed Description

[ 1 st embodiment ]

An embodiment of the combine harvester according to embodiment 1 will be described below with reference to fig. 1 to 18.

[ integral Structure ]

Fig. 1 to 3 show an entire conventional combine harvester as an example of a combine harvester of the present invention.

A conventional combine is constituted by mounting a threshing device 2, a grain tank 3, and a cockpit 5 on the front part of a traveling machine body 1 on a machine body frame 11 provided with a pair of left and right crawler traveling devices 10, and mounting a harvesting conveyor 4 so as to be capable of lifting and lowering. As shown in fig. 3, the body frame 11 is provided with a cab 5 at the right front portion, a grain tank 3 at the rear right rear portion, and a threshing device 2 at the left rear portion, which is the left side of the grain tank 3.

The reaping conveyor 4 includes a feeder 40 for conveying the processed material extending from the front of the threshing device 2 through the front in the left lateral direction of the cab 5, a reaping unit 41 for supplying the processed material to the feeder 40, and a reel device 42 for gathering the ear front side planted with the stalks on the upper part of the reaping unit 41.

The harvesting unit 41 includes a pusher-type cutter 41a for harvesting the planted stalks, and a horizontal conveyance auger 41b for collecting the stalks which have been harvested and become the object to be treated toward the inlet 40a of the feeder 40, and the feeder 40 incorporates a chain-type raking conveyor 40 b.

Therefore, the stalks in the fallen state are raked up to some extent by the reel device 42, harvested by the cutter 41a, conveyed toward the inlet 40a of the feeder 40 by the auger 41b, raked up along the bottom surface of the feeder 40 by the raking-up conveyor 40b, and fed to the tip end of the threshing device 2 (the object to be treated) after reaching the inlet 40 a.

As shown in fig. 2, the harvesting conveyor 4 is pivotally supported at a fixed position on the body frame 11 so as to be vertically swingable about a horizontal lateral axis x, and is configured to be changeable between a harvesting posture in which the harvesting unit 41 approaches the ground and a non-harvesting posture in which the harvesting unit 41 is raised from the ground to a predetermined height by extending and contracting the hydraulic cylinder 12 for elevation.

The threshing device 2 is formed of a whole stalk input type, includes a stroking-off drum 20 long in the front-rear direction, performs threshing, discharges dust in a workpiece from the rear, and feeds the workpiece including grains after threshing to a grain box 3.

The grain tank 3 is configured to temporarily store the object to be processed including grains fed from the threshing device 2 side, and to collect the object to be processed including grains from the grain tank 3 to the outside via the grain discharging auger 30.

As shown in fig. 6 and 7, an engine room 13 is provided in a lower portion of the cabin 5, and an engine 14 and a radiator 15 are arranged in this order from the left side in a state of being positioned rearward and downward of a driver seat 50 in the cabin 5.

As shown in fig. 4, a dust cover 16 is disposed on the right outer side of the engine room 13 to prevent the radiator 15, which sucks in outside air from the right outer side, from sucking in external dust and the like during air intake, and the outside air sucked in through the radiator 15 is discharged to the left side (left side in fig. 7) of the engine room 13 after cooling the engine 14.

[ cockpit ]

As shown in fig. 4 to 11, the cab 5 includes a floor surface 5A on the upper surface side of a floor 51 supported by a support 11a fixed to the body frame 11, four pillars 52 are erected above the floor 51, and a roof portion 53 is supported by the pillars 52.

Of the four support columns 52, a pair of left and right support columns 52a and 52b (corresponding to front columns) on the front side of the body are erected from the floor surface 5A on the lowest part of the floor 51, and support columns 52c and 52d on the rear side of the left and right are erected from a floor upper part 51a of the floor 51 which also serves as a support base for the driver seat 50 and a hood partition wall (see fig. 9 to 11).

Among the four support columns 52, a front glass 54 made of curved glass is provided between a pair of left and right support columns 52a, 52b (corresponding to front columns) on the front side of the body.

The front glass 54 is provided over the entire range from the floor surface 5A to the hood portion 53, and as shown in fig. 10 and 11, bulges forward beyond the front edge of the floor surface 5A, and the front glass 54 is formed as an inclined surface that is convexly curved forward so as to be positioned further toward the rear side than the lower end side, so that the inclination angle θ 2 of the upper side portion is larger than the inclination angle θ 1 of the lower side portion with respect to the horizontal plane in side view.

As shown in fig. 8, the front glass 54 is formed in a convex shape in which a central portion in the left-right direction bulges forward than both end portions in the left-right direction in a plan view. Therefore, the front glass 54 is not a simple single curved surface having a curvature about an axis in either the horizontal direction or the vertical direction, but is a toric surface having a curvature about a plurality of axes intersecting each other in the vertical direction and the horizontal direction.

The curved surface shape of the front glass 54 in the side view determines the mounting posture of the front glass 54 formed of a curved surface having a constant curvature, as shown in fig. 10 and 11, in which the position slightly below the upper end of the front glass 54 is the maximum forward projecting position P located most forward of the machine body, but the curvature of the front glass 54 in the side view is not limited to the constant curvature, and for example, a shape in which the curvature of the lower portion is larger than the curvature of the upper portion, or conversely the curvature of the lower portion is smaller than the curvature of the upper portion may be adopted.

As described above, the reason why the maximum forward projecting position P of the front glass 54 is set to a position slightly lower than the upper end of the front glass 54 is that when the head of the operator is maximally close to the front glass 54 when looking into the front lower side of the cab 5, the maximum forward projecting position P is set to be slightly closer to the front than when the maximum forward projecting position P matches the upper end of the front glass 54.

The curved surface shape of the front glass 54 in a plan view is not formed with a constant curvature over the entire left-right direction as shown in fig. 8, but is a gently curved surface in which the curvature near the end portions is larger than the curvature near the central portion and is close to a straight line at the central portion.

However, this is merely an example, and a form may be adopted in which the curved surface shape of the front glass 54 in a plan view is formed with a constant curvature over the entire left-right direction.

As shown in fig. 4 and 6, the pair of left and right support columns 52a, 52b located on the front side of the machine body on both left and right end sides of the front glass 54 are formed along the lateral end edges of the front glass 54 so as to have the same inclination as the inclination of the inclined surface of the front glass 54 in the side view.

That is, the pillars 52a and 52b have an inclination curved convexly toward the front side so as to be positioned further toward the rear side than the lower end side, similarly to the curved shape of the front glass 54 formed such that the inclination angle θ 2 of the upper side portion with respect to the horizontal plane is larger than the inclination angle θ 1 of the lower side portion in side view, and are designed such that the upper side is positioned further toward the front side than the mounting position to the floor surface 5A of the cabin 5.

In the right side portion of the lateral side portions of the cabin 5, an entrance for the operator to get on and off is formed between the right front pillar 52a and the right rear pillar 52c, and an entrance door 55 for opening and closing the entrance is openably and closably attached via a hinge 55a provided on the right rear pillar 52c side.

The end edge of the front side of the machine body of the entrance door 55 is formed in an end edge shape along the curved shape of the right front side pillar 52a, and the upper end side of the end edge portion protrudes more to the front side than the lower end side, and the right front side pillar 52a has the same inclination as the inclination of the inclined surface of the front glass 54.

As shown in fig. 4, the entrance door 55 is a door 55e that is formed by a single piece of transparent glass 55d on the lower side and a pair of front and rear transparent glass double-slot sliding doors that can be opened and closed by sliding operation on the upper side, with a cross member 55c that is erected so as to cross the outer frame 55b at an intermediate position in the vertical direction.

The height position of the bar member 55c in the vertical direction is set to a height position higher than the seating surface 50a of the operator's seat 50 in the cab 5 and lower than the upper surface of the below-described operation box 6.

As shown in fig. 8 and 9, the inner holding member 55f is provided on the door inner side of the horizontal frame member 55c, and is configured to hold the door 55 when the door 55 is opened and closed from the inside of the cabin 5. Reference numeral 55g in fig. 4 and 5 denotes a handle used for opening and closing operation from the outside, and is attached in an inclined posture along the pillar 52a on the body front side of the cab 5.

As shown in fig. 6, in a left side portion of the lateral side portion of the cab 5, a lateral window 56a is provided in a portion of the left lateral side wall 56, between the left front pillar 52b and the left rear pillar 52d, and upward from a middle position in the vertical direction of the lateral side portion, and is configured to be openable and closable by a sliding operation of a pair of front and rear transparent glass double-slot sliding doors.

The openable and closable horizontal window 56a formed by the double-slot sliding door has a lower end set at a height position higher than the seat surface 50a of the operator's seat 50 in the cab 5 and lower than an upper surface of the operation box 6 described later, and an upper end set at a height position in the vertical direction reaching a lower edge of the hood 53, similarly to the height in the vertical direction of the horizontal frame member 55c of the landing door 55.

As shown in fig. 4 and 8, in the side surface portion of the cabin 5, from the portion on the rear side of the landing door 55 where the right side surface portion of the landing door 55 is provided to the rear side surface portion, a transparent glass capable of viewing the portion corresponding to the right rear corner of the cabin 5 is embedded in the portion from the portion on the rear side of the right side surface portion on the rear side of the right rear pillar 52c to the rear side surface portion, thereby constituting an openable and closable fixed window 57. The fixed window 57 and the outer wall of the right rear corner of the cab 5 to which the fixed window 57 is attached are formed in a curved shape as shown in fig. 8.

As shown in fig. 7, 8 and 11, a rear window 58a is formed in a portion of the rear wall 58 on the left side of the portion where the fixed window 57 is formed and extending from the upper side of the upper end of the seat back 50b of the driver seat 50 to the lower edge of the hood portion 53, and is configured to be openable and closable by a sliding operation using a pair of right and left transparent glass double-slot sliding doors, in a rear side portion of the cabin 5.

As shown in fig. 4 to 6, the hood 53 supported by the four support posts 52 is provided with a front side portion projecting forward from the upper end portion of the front glass 54, and the harvesting portion 41 and four headlamps 53a for illuminating the front of the harvesting portion 41 are attached to the left and right end portions and positions close to the end portions of the front side portion.

Since the shape of the lower end edge of the front glass 54 in a plan view of the floor surface 5A of the cabin 5 is a curved shape in which the central portion in the left-right direction bulges to the front side than the both end portions in the left-right direction as shown in fig. 8, the front edge shape thereof is formed in a curved shape in which the central portion in the left-right direction bulges to the front side than the both end portions in the left-right direction along the shape of the lower end edge of the front glass 54.

Further, near the front edge of the floor surface 5A, as shown in fig. 8 to 11, a footrest section 51b is provided so as to be positioned slightly above the floor surface 5A. The footrest section 51b is attached to the floor surface 5A via stays 51c on both left and right ends in an inclined posture in which the front side of the machine body is high and the rear side is low, is positioned directly in front of the driver seat 50, and has a left-right width that is approximately the same as or slightly shorter than the left-right width of the seating surface 50a of the driver seat 50.

The footrest section 51b is disposed on the front side as much as possible by being located closer to the front edge reference position than the center portion of the front edge of the floor surface 5A, which is convex in the front direction than both end portions in the left-right direction, of the center portion of the front edge so that at least the front edge portion of the footrest section 51b is located on the front side than the lower end positions of the pair of left and right support columns 52a, 52b (corresponding to the front columns) on the front side of the machine body.

This makes it possible to dispose the operator's seat 50 relatively on the forward side, which is advantageous when looking into the lower front of the cab 5.

As shown in fig. 4 to 6 and 8, a cabin protector 59 is connected to the right front pillar 52a on the front side of the lateral side portion of the cab 5 on the side where the landing door 55 is provided. The cabin protector 59 is formed of a metal pipe material bent along the curved shape of the right front side pillar 52a as a front pillar in side view, and is bolted to the vicinity of the lower end and the vicinity of the upper end of the right front side pillar 52 a.

The capsule protector 59 includes a1 st rod-like protector 59a positioned laterally outward of the right front pillar 52a at a predetermined interval, and a 2 nd rod-like protector 59b positioned further forward of the 1 st rod-like protector 59a at a predetermined interval.

The 1 st bar-shaped protection portion 59a and the 2 nd bar-shaped protection portion 59b of the cabin protection body 59 have sufficient strength so that the cabin protection body can be lifted and lowered while being gripped as a handrail when the lifting and lowering door 55 is opened and the operator is lifted and lowered, and are provided at positions easy to grasp.

As shown in fig. 4 and 5, the hatch protection body 59 configured as described above is attached to the 1 st rod-like protection portion 59a with the winker lamp 80 positioned between the right front pillar 52a and the 1 st rod-like protection portion 59a in the left-right direction, between the 1 st rod-like protection portion 59a and the 2 nd rod-like protection portion 59b in the front-rear direction, and below the handle 55g of the ascending/descending door 55 in the up-down direction.

As shown in fig. 4 and 5, the cabin protector 59 is attached with a rear view mirror 81 laterally outside the 2 nd rod-like protector 59b and at a position that is approximately equal to or higher than the upper end of the seat back 50b of the driver seat 50 in the vertical direction.

Further, an antenna 82 is attached to an upper end portion of the 1 st rod-like protector 59a of the cabin protector 59 so as to extend upward.

As shown in fig. 5, a wiper 83 is disposed on the upper outer surface of the front glass 54.

[ Structure of operation part ]

As shown in fig. 8, in the interior of the cab 5 as the operating portion, an operator's seat 50 is disposed at a substantially center in the left-right direction, and an operation box 6 for performing a steering operation and the like is provided on the right front side of the operator's seat 50, and a side panel box 7 for performing a gear shift operation and the like is provided on the left side.

The driver seat 50 includes a seat surface 50a and a seat back 50 b. As shown in fig. 4, 8, and 10, a boarding/alighting handle 50c is provided on the right lateral side of the operator's seat 50 for assisting the operator to board the vehicle while pulling up his/her body by grasping it when the boarding/alighting door 55 is opened and the operator gets into the cab 5.

As shown in fig. 8 and 10, the riding-and-landing grip 50c is formed of a side view コ -shaped member, and the side view コ -shaped member is attached to a side view inverted L-shaped attachment member 51d provided to a mounting portion of the driver seat 50 extending over the floor upper portion 51b in the cabin 5 and a portion standing on the back side thereof.

[ operation case ]

As shown in fig. 8 and 12, the operation box 6 for operation provided at the right lateral end of the cab 5 is provided with a steering lever 61, a combination switch 62, and a key switch 63 on the upper surface side of the box main body 60. The box body 60 of the control box 6 is fixedly supported in a cantilever manner via a mounting member 6a on a right front side pillar 52a of the cabin 5, which is a side on which the landing door 55 is provided, on a right front side of the operator's seat 50.

In a state where the box main body 60 is supported by the support column 52a, the operation box 6 includes a front face 60a inclined so as to be located forward of an end portion side in the left-right direction of the cab 5 and rearward of a center side in the left-right direction of the cab 5 in a front side of the box main body 60 in a plan view, and also includes a rear face 60b inclined so as to be located forward of the end portion side in the left-right direction of the cab 5 and rearward of the center side in the left-right direction of the cab 5 in a rear side in a plan view.

As a result, the horizontal width of the box body 60 when the operator riding on the driver seat 50 views the box body 60 appears short.

That is, for example, as shown by the imaginary lines in fig. 8, if the box main body 60 is configured by a simple rectangular structure in which the front surface side is directed to the body front side and the rear surface side is directed to the body rear side, the box main body 60 viewed from the operator's seat 50 side has a horizontal width corresponding to a length in the diagonal direction connecting the corner portion at the center side in the left-right direction of the cab 5 at the front surface side of the box main body 60 and the corner portion at the end side in the left-right direction of the cab 5 at the rear surface side of the box main body 60, which is wide.

The box main body 60 of the present invention is not such a rectangular box main body 60, and includes a front face 60a inclined so as to be located forward of the end portion side in the left-right direction of the cabin 5 and rearward of the center side in the left-right direction of the cabin 5, and a rear face 60b inclined so as to be located forward of the end portion side in the left-right direction of the cabin 5 and rearward of the center side in the left-right direction of the cabin 5 in a plan view, as described above.

Therefore, from the center position O of the seating surface 50a of the operator's seat 50, which is the position where the operator is present, as viewed in plan, the projection lines L1, L2 to the ends of the box body 60 in the left-right direction from the center position O are narrower than the projection lines L1 ', L2 ' to the ends of the rectangular box body 60 (see the imaginary lines in fig. 8) in the left-right direction.

In the steering lever 61 and the combination switch 62 provided on the upper surface side of the box body 60, the steering lever 61 is located in the vicinity of the rear side closer to the driver seat 50, and the combination switch 62 is provided in the vicinity of the front side farther from the driver seat 50 than the steering lever 61.

As shown in fig. 5, 9, and 11, the operation box 6 is mounted at a position where the upper surface of the box body 60 is positioned higher than the seating surface 50a of the operator's seat 50 and slightly higher than the inner gripping member 55f mounted on the indoor side of the landing door 55.

As shown in fig. 8 and 9, the position of the control box 6 in plan view is such that a steering lever 61 for steering provided in the control box 6 is slightly shifted to the right and outside from the front of the driver seat 50.

That is, since the steering lever 61 is disposed in the cabin 5 at a position shifted laterally in the left-right direction from the position directly in front of the driver seat 50, the steering lever 61 corresponding to the operation element for the steering operation, the box body 60 serving as the member corresponding to the support structure for attaching the steering lever 61, and the like are removed from the position directly in front of the driver seat 50, and the front view directly in front is hardly blocked, so that the space S0 in the lower portion on the front side of the cabin 5 can be observed between the driver seat 50 and the lower portion of the front glass 54 at the position directly in front thereof. This can improve visibility in the forward and downward direction of the cab 5 in a state of riding on the operator's seat 50.

As shown in fig. 4 and 11, the control box 6 is disposed so as to be positioned further toward the front side of the body than the lower end of the pillar 52a on the front right side of the cab 5 in side view. Therefore, when the operator rides in and out of the cab 5, the operator who is to ride in and out of the area above the floor surface 5A in the cab 5 located rearward of the body with respect to the lower end of the pillar 52a on the right front side of the cab 5 is less likely to touch the operation box 6 provided on the front side that is deviated from the area.

The control box 6 is a member located on the front side of the body with respect to the lower end of the pillar 52a on the front right side of the cab 5 in side view, but as shown in fig. 8 and 11, a front glass 54 is provided at a distance from the front glass 54. This is to enable a sufficient swing range to be secured to the front side thereof without hindrance when the steering lever 61 provided on the upper side of the operation box 6 is swung back and forth and left and right.

The steering lever 61 for steering is supported by the box main body 60 so as to be swingable in the crosswise directions of the front, rear, left, and right. The operation position of the steering lever 61 is detected by a position detector, not shown, built in the box body 60, and each device in the box body 60 is connected to a device to be connected via an electric wiring 66 made of a conductive wire or a signal wire, instead of a structure in which the operation position of the steering lever 61 is connected to a steering mechanism or the like via a mechanical connection mechanism such as a link mechanism.

If the steering lever 61 is operated to swing in the right direction, the crawler travel device 10 is operated to swing in the right direction based on the detection result of the position detection body, not shown, built in the box body 60, and if the steering lever 61 is operated to swing in the left direction, the crawler travel device 10 is operated to swing in the left direction based on the detection result of the position detection body, not shown, built in the box body 60.

Further, if the steering lever 61 is operated to swing forward, the feeder 40 and the harvesting unit 41 are lowered at a speed corresponding to the operation position of the steering lever 61 based on the detection result of the position detecting body, not shown, built in the box main body 60. Similarly, if the steering lever 61 is operated to swing backward, the feeder 40 and the harvesting unit 41 are raised at a speed corresponding to the operation position of the steering lever 61. The more the swing operation amount from the neutral position, the faster the lowering speed or the raising speed. If the swing operation of the steering lever 61 is stopped and the feeder 40 and the harvesting unit 41 are held at the neutral position, the feeder stops at the neutral position.

As shown in fig. 8 and 12, the combination switch 62 provided in the operation box 6 is configured to sound an alarm telephone by pressing a button 62a at the center, and turn a lever 62b provided on the periphery of the button 62a to turn on and off the headlight 53 a.

Further, the operation box 6 is provided with a key switch 63 for inserting a key to start and stop the engine 14.

As shown in fig. 12 and 13, the harness 66 such as the conductive wires and the signal wires introduced into the console box 6 is installed in the harness cover 64 disposed inside the cabin independently of the pillar 52a along the pillar 52a on the front right side of the cabin 5.

Therefore, when the need for wiring, maintenance, or the like of the harness 66 arises, the work of disassembling the support column 52a is not necessary, and the work of disassembling or disassembling the electrical harness cover 64 can be simply performed on the internal harness 66.

As shown in fig. 11 to 13, a door stabilizer 65 is provided on the pillar 52a on the right front side of the cabin 5, which is located below the box main body 60, and which is used to engage and disengage the locking device 55h provided on the cabin inner side of the boarding/alighting door 55. The door stabilizer 65 is provided so as to be positioned on the body front side from the lower end of the pillar 52a on the right front side of the cab 5 in side view and on the body front side from the rear end of the box main body 60.

Therefore, when the operator rides in and out of the cab 5, the operator who is about to ride in and out of the area above the floor surface 5A in the cab 5 located rearward of the body with respect to the lower end of the pillar 52a located forward and rightward of the cab 5 may be less likely to come into contact with the door stabilizer 65 located forward of the body with respect to the rear end of the box body 60 of the console box 6 provided forward of the area.

[ side panel case ]

As shown in fig. 8 to 10, a side panel box 7 is provided on the left lateral side of the operator's seat 50 in the cab 5.

As shown in fig. 9 and 10, the side panel box 7 includes a box main portion 70 having an upper surface formed lower than the seating surface 50a of the driver seat 50 and on which a main shift lever 72 (corresponding to a shift lever) for traveling and the like are disposed, and an electrical component arrangement portion 71 located on a front end side of the box main portion 70 and on which electrical components are disposed.

The case main section 70 further includes an outer section 70A in which various levers such as a main shift lever 72 and a sub shift lever 73 for traveling are disposed on a side farther from the operator's seat 50, and an inner section 70B in which various switch operation elements 74 are disposed on a side closer to the operator's seat 50. Various lever-like grip portions such as the main shift lever 72 and the sub shift lever 73 are attached to a position higher than the seating surface 50 a.

The electrical component placement portion 71 includes a meter display portion 71a of a meter having a high frequency of visual observation in a normal harvesting and threshing work, and is provided in a state of being housed in a box made of resin, functions as a meter panel, and is integrally attached to an end portion of the box main portion 70 on the front side of the machine body.

The meter display portion 71a is provided with, for example, a work speedometer for displaying an actual work vehicle speed and a load indicator for displaying a load according to an engine speed at a center portion thereof, and is provided with, for example, an engine revolution meter and a fuel gauge at both sides thereof.

The electrical component arrangement portion 71 may display various instrument portions by an image display means such as a liquid crystal.

As shown in fig. 6 and 10, the electrical component arrangement portion 71 is configured to be thinner in the vertical direction than the case main portion 70, and is provided in a cantilever-like manner from the upper portion of the front end of the case main portion 70 to the diagonally right and forward side so that the upper surface is flush with the case main portion 70.

Therefore, a vertical gap is formed between the lower surface of the electrical component arrangement portion 71 and the floor surface 5A of the cab 5, and a longitudinal gap is also formed between the front end edge 70a of the box main portion 70 and the inner surface of the front glass 54 in front. That is, an open space S1 is formed below the side portion of the cab 5 on the side where the side panel box 7 is present, so as to be visible from the operator' S seat 50 side, at a position corresponding to the lower side of the electrical component arrangement portion 71.

As shown in fig. 6 and 10, the front end edge 70a of the box main portion 70 is formed in a shape inclined so as to be positioned further toward the rear side of the machine body toward the lower side along the inclination of the inner surface of the front glass 54.

As shown in fig. 8 and 10, the electrical component arrangement portion 71 extending from the front end portion of the box main portion 70 extends further to the front side of the body than the lower ends of the pair of left and right stays 52a and 52b positioned on the front side of the body on both ends of the front glass 54 and the front edge of the floor surface 5A of the cabin 5, is formed so as to be curved along the rear surface of the front glass 54 in a plan view, and has a shape in which the extending end side is curved so as to face the front side of the driver seat 50 (obliquely right front side in this embodiment).

The electrical component placement portion 71 has a straight side edge on the rear side closer to the driver seat 50 and a curved side edge close to the inner surface shape of the front glass 54 on the front side closer to the front glass 54 in a plan view.

Thus, for example, the electrical component arrangement portion 71 is in a state in which the various meter portions in the meter display portion 71a are arranged in a direction along the rear surface of the front glass 54, as compared with a structure in which the various meter portions are arranged in the front-rear direction of the body in the meter display portion 71 a. Therefore, compared to the structure in which various instrument portions are arranged in the front-rear direction of the body as described above, the difference in distance from the driver seat 50 to the portion where each instrument portion is arranged can be reduced, and there is an advantage that it is easy to visually recognize a problem that the distance from the driver seat 50 becomes longer to be more difficult to see when the instrument portions are positioned on the front side of the body.

In this way, the electrical component arrangement portion 71 is cantilevered from the front end portion of the box main portion 70, the open space S1 is present below the electrical component arrangement portion 71, and no object obstructing the front view is present below the electrical component arrangement portion 71, so that the lower side portion of the front side of the cabin 5 is easily visible from the driver seat 50 side through the lower side of the electrical component arrangement portion 71.

In the case main section 70, various levers such as a main shift lever 72 and a sub shift lever 73 for traveling that are linked to various related devices (not shown) via a mechanical link mechanism (not shown) are disposed on an outer side section 70A on the far side from the driver seat 50, and various switch operation members 74 that are electrically connected to the various related devices without using the mechanical link mechanism are disposed on an inner side section 70B on the side closer to the driver seat 50 than the outer side section 70A.

As shown in fig. 8, 9, and 10, the outer portion 70A is formed in a box shape standing from the floor 51 of the cab 5, but the inner portion 70B is formed so as to bulge out from the upper portion of the outer portion 70A toward the operator 'S seat 50, and a recessed space S2 recessed in a direction away from the operator' S seat 50 is provided below the inner portion 70B.

As shown in fig. 5 and 9, the various levers such as the main shift lever 72 and the sub shift lever 73 provided on the outer portion 70A are inclined so that the vicinity of the grip portion is separated from the left lateral wall 56 or the lateral window 56a at the left side of the cabin 5 and approaches the side where the driver seat 50 is present.

That is, the lever base portion of the main shift lever 72 that protrudes upward from the lever guide portion on the upper surface of the outer portion 70A is bent forward and rightward, and the lever base portion of the sub shift lever 73 that protrudes upward from the lever guide portion on the upper surface of the outer portion 70A is bent toward the driver seat 50.

As shown in fig. 8, the inner portion 70B is formed such that a front end portion 76 on the front side of the machine body is positioned on the rear side of the machine body with respect to a connection portion 75 between the outer portion 70A and the electrical component arrangement portion 71 connected thereto. The front end portion 76 of the inner portion 70B is inclined so as to be positioned further rearward toward the driver seat 50.

Thus, between the front end portion 76 of the inner portion 70B and the inward side edge of the electrical component arrangement portion 71, a recessed portion S3 is formed in a shape recessed in a direction away from the driver seat 50 in a plan view, at a side edge portion of the cabin inner side located in front and rear of and including the connection portion 75 between the electrical component arrangement portion 71 and the box main portion 70.

In this way, by forming the recessed portion S3 on the side edge portion on the cabin inner side including the position of the connecting portion 75 between the electrical component arrangement portion 71 and the box main portion 70, the lower side portion on the front side of the cabin 5 can be more easily seen from the viewpoint of an operator riding on the operator' S seat 50 which is a position higher than the electrical component arrangement portion 71 and the box main portion 70.

Further, as shown in fig. 8 to 10, a parking brake pedal 84 is disposed on the floor surface 5A of the cab 5 that overlaps the portion where the recessed portion S3 is formed in a plan view.

Thus, when the operator riding on the driver seat 50 steps on the parking brake pedal 84, the parking brake pedal 84 can be operated to be depressed with the leg portions thereof inserted into the recessed portions S3 without being obstructed by the presence of the side panel box 7 located at a position lower than the seating surface 50a of the driver seat 50.

In the conventional combine configured as described above, the front glass 54 is not a simple flat glass but is formed in a curved shape having an inclined surface whose upper side portion has a larger inclination angle than a lower side portion with respect to a horizontal plane, so that forward and downward observation can be performed well from the indoor side of the cab 5, and an open space S1 can be formed in the cab 5 between the electrical component arrangement portion 71 located in the front portion of the side panel box 7 disposed on the left side of the operator 'S seat 50 and the floor surface 5A of the cab 5, and as shown in fig. 8, a field of view β 1 in the left-right direction from the operator' S seat 50 can be ensured to be larger than a field of view β 2 in the case where the open space S1 is not formed.

As a result, as shown in fig. 3, at the right end (cut side) of the harvesting unit 41 of the harvesting conveyor 4, it is easy to visually check one inspection point CP1 for observing the presence or absence of harvesting residue on the ground after the passage of the harvesting conveyor 4 from between the cabin 5 and the harvesting unit 41 and another inspection point CP2 for confirming whether the delivery state from the harvesting unit 41 to the feeder 40 is good or not.

[ other modes 1 of embodiment 1 ]

The front glass 54 is not limited to being formed of a toric surface having a curvature about a plurality of axes intersecting each other in the vertical direction and the horizontal direction as described in the embodiment, and may be formed of a single curved surface having a curvature about an axis in the horizontal direction, for example.

In this case, the front end edge of the floor surface 5A of the cabin 5 is a straight line shape, but the pair of left and right pillars 52a, 52b (corresponding to the front pillars) on the front side of the body may be formed in shapes along both end edges of the front glass 54 in the left-right direction, and curved so that the inclination angle θ 2 of the upper side portion with respect to the horizontal plane is larger than the inclination angle θ 1 of the lower side portion in side view.

The other structures are the same as those of the above embodiment.

[ other modes 2 of embodiment 1 ]

The front glass 54 is not limited to being formed of a toric surface having a curvature about a plurality of axes intersecting each other in the vertical direction and the horizontal direction as described in the embodiment, or being formed of a single curved surface, and for example, a plurality of flat glass units may be formed into a bent shape in which the inclination angle θ 2 of the upper side portion with respect to the horizontal plane is larger than the inclination angle θ 1 of the lower side portion in a side view.

In this case, the front end edge of the floor surface 5A of the cab 5 is also linear, but the pair of left and right pillars 52a, 52b (corresponding to the front pillars) on the front side of the body may be formed in shapes along both end edges of the front glass 54 in the left-right direction, and bent so that the inclination angle θ 2 of the upper side portion with respect to the horizontal plane is larger than the inclination angle θ 1 of the lower side portion in side view.

The other structures are the same as those of the above embodiment.

[ other modes 3 of embodiment 1 ]

In the above embodiment, the front glass 54 is provided in the range from the hood portion 53 to the floor surface 5A, but the present invention is not limited to this, and for example, the lower end of the front glass 54 may be in a range that is located below the seating surface 50a of the driver seat 50 and is higher than the floor surface 5A.

In this case, although the view field on the lower front side of the cabin 5 is narrowed as compared with a structure provided in a range in which the lower end of the front glass 54 reaches the floor surface 5A, since the front glass 54 is not a simple flat glass but has a shape having an inclination such that the inclination angle θ 2 of the upper side portion with respect to the horizontal plane is larger than the inclination angle θ 1 of the lower side portion in side view, the operator's seat 50 can be disposed on the considerably forward side in the cabin 5, the view field on the lower front side of the cabin 5 can be secured considerably larger than a structure in which the front glass 54 reaches only the vicinity of the waist of a seated operator, and the operator can drop his or her sight line to a side closer to the lower front of the cabin 5.

The other structures are the same as those of the above embodiment.

[ other modes 4 of embodiment 1 ]

The footrest section 51b disposed in the cab 5 is not limited to the structure in which the footrest member is separately attached to the floor surface 5A as described in the embodiment, and the footrest section 51b may be formed by providing a portion inclined forward and upward at the front end of the floor surface 5A of the cab 5 as shown in fig. 14. The other structures are the same as those of the above embodiment.

[ other modes 5 of embodiment 1 ]

The electrical component arrangement portion 71 of the side panel box 7 constituting the operation portion is not limited to the shape in which it is formed so as to be curved along the back surface of the front glass 54 in a plan view and the projecting end side is curved so as to face the front side (obliquely right front side) of the driver seat 50 as shown in the embodiment, and for example, as shown in fig. 15, the electrical component arrangement portion 71 of the side panel box 7 may be configured so as to project straight to the front side of the box main portion 70.

In this case, the recessed portion S3 that is recessed in a direction away from the operator ' S seat 50 in plan view is not formed in the side edge portion on the cabin inner side including the position of the connection point 75 between the electrical component arrangement portion 71 and the box main portion 70, but the front end portion 76 of the inner portion 70B on which the various switch operation elements 74 are arranged on the side closer to the operator ' S seat 50 is positioned on the body rear side than the connection point 75 between the electrical component arrangement portion 71 and the box main portion 70, thereby facilitating peeping into the side portion on the front side of the operator ' S cabin 5.

Further, by disposing the parking brake pedal 84 on the front side of the front end portion 76 of the inner portion 70B on which the various switch operating elements 74 are disposed closer to the driver seat 50, the parking brake pedal 84 can be depressed without being obstructed by the presence of the side panel box 7 at a position lower than the seat surface 50 a.

Although not shown, the electrical component arrangement portion 71 may be configured to include a meter display portion 71a that faces in the left-right direction, extend from the front end portion of the box main portion 70 toward the front side of the driver seat 50, and be formed in a shape that is curved in an L shape in a plan view of the box main portion 70 and the electrical component arrangement portion 71.

The other structures are the same as those of the above embodiment.

[ other modes 6 of embodiment 1 ]

The side panel box 7 constituting the operation section is not limited to the configuration in which the recessed section S3 recessed in a direction away from the driver seat 50 in a plan view is formed in the side edge section on the cabin inner side including the position of the connection section 75 between the electrical component arrangement section 71 and the box main section 70 as shown in the embodiment, and for example, as shown in fig. 16, a recessed section S3 recessed in a direction away from the driver seat 50 in a plan view may be formed in the side of the electrical component arrangement section 71 of the side panel box 7 at a position away from the connection section 75 in the forward direction.

The other structures are the same as those of the above embodiment.

[ other modes 7 of embodiment 1 ]

The operation box 6 is not limited to the structure supported by the right front side pillar 52a (corresponding to the front pillar) on the front side of the body as shown in the embodiment, and for example, a support leg may be erected from the floor surface 5A of the cab 5 to the vicinity of the right front side pillar 52a, and the operation box 6 may be supported by the support leg.

The other structures are the same as those of the above embodiment.

[ other modes 8 of embodiment 1 ]

In the above embodiment, the shape of the box main body 60 of the operation box 6 is a shape in which the front face 60a inclined so as to be located further forward than the end portion side in the left-right direction of the cab 5 and further rearward than the center side in the left-right direction of the cab 5 is provided on the front side of the box main body 60 in a plan view, and the rear face 60b inclined so as to be located further forward than the end portion side in the left-right direction of the cab 5 and further rearward than the center side in the left-right direction of the cab 5 is provided on the rear side in a plan view, but the shape is not limited to this shape, and may be a shape having only the inclined front face 60a or a shape having only the inclined rear face 60 b.

In the above embodiment, the structure in which the entire front side of the box main body 60 is inclined is shown as the inclined front face 60a, and the structure in which only a part of the rear side of the box main body 60 is inclined is shown as the inclined rear face 60b, but the present invention is not limited to this, and the structure in which only a part of the front side of the box main body 60 is inclined as the inclined front face 60a, or the entire rear side of the box main body 60 is inclined as the inclined rear face 60 b.

A box main body 60 formed in a simple rectangular shape in plan view without such an inclined front face 60a and an inclined rear face 60b may be used. The other structures are the same as those of the above embodiment.

[ other modes 9 of embodiment 1 ]

The entrance door 55 of the cab 5 is not limited to the structure that is opened and closed with the hinge 55a on the rear side of the body as the pivot point as shown in the embodiment, and may be configured to open and close around the pivot point on the front side of the body by providing the hinge 55a on the right front side pillar 52a, for example.

The other structures are the same as those of the above embodiment.

[ other modes 10 of embodiment 1 ]

In the above embodiment, the door 55e provided on the entrance door 55, the horizontal window 56a provided on the left side portion of the cabin 5, and the rear window 58a provided on the rear side portion of the cabin 5 are configured to be openable and closable by a sliding operation using a pair of double-slot sliding doors made of transparent glass, respectively.

The other structures are the same as those of the above embodiment.

[ other modes 11 of embodiment 1 ]

The inner gripping member 55f provided on the inner side of the door of the loading/unloading door 55 is not limited to the linear configuration shown in the embodiment, and may be provided with a portion that curves so as to approach the driver seat 50 side at a position near the driver seat 50, and an armrest 50d as a cushion may be provided on the portion that curves so as to approach the driver seat 50 side, as shown in fig. 17, so that it is easily configured as an arm rest.

The other structures are the same as those of the above embodiment.

[ other modes 12 of embodiment 1 ]

The mounting position of the steering lever 61 is not limited to the configuration provided on the lateral side of the front portion of the cab 5 as in the embodiment, and may be provided on an armrest 50d provided on the lateral side of the driver seat 50, for example, as shown in fig. 18.

That is, the armrest 50d is pivotally supported on the right lateral side portion of the seat back 50b of the driver seat 50 via a lateral shaft 50e, and the operation box 6 is attached to the front end portion of the armrest 50 d. The armrest 50d is in a use posture in which the upper surface of the armrest 50d is substantially horizontal, and the armrest is supported from below by the stopper 50f so as to be able to rest on the elbow.

If the free end side of the armrest 50d is raised upward around the horizontal axis 50e, the armrest 50d is in a non-use posture in which the position thereof is changed to the rear side of the driver seat 50 together with the stopper 50f, as shown by the phantom line in fig. 18, and is in a state of being located at a position that does not become an obstacle to the riding of the operator on the cab 5.

The operation box 6 attached to the armrest 50d is provided with a steering lever 61, a combination switch 62, and a key switch 63 on the upper surface side of the box main body 60, as in the configuration of the above-described embodiment. The upper surface of the box body 60 is positioned slightly lower than the upper surface of the armrest 50d, and the grip portion of the steering lever 61 is positioned slightly higher than the upper surface of the armrest 50d, so that the steering lever 61 and the combination switch 62 can be easily operated in a state where the operator has his or her elbow resting on the armrest 50 d.

The structure for moving the armrest 50d to a position away from the front of the driver seat 50 is not limited to the upward and downward swinging about the horizontal axis 50e as described above, and may be configured as follows, for example.

Although not shown, for example, the entire armrest 50d may be configured to be movable back and forth with respect to the seat back 50b of the driver seat 50, the armrest 50d itself may be configured to be movable back and forth with respect to the free end side console box 6 as a telescopic structure, or the rear end side of the armrest 50d may be supported to be swingable about a vertical swing axis, and the front end side of the armrest 50d may be configured to be displaced laterally outward with respect to the front portion of the driver seat 50.

The armrest 50d is not limited to being supported by the seat back 50b of the driver seat 50, and may be supported by a plate constituting the seating surface 50a of the driver seat 50 or a floor portion in the vicinity of the driver seat 50.

The other structures are the same as those of the above embodiment.

[ 2 nd embodiment ]

An embodiment of the combine harvester according to embodiment 2 will be described below with reference to fig. 19 to 27. In this embodiment, the combine of the present invention is also used in a general type (whole stalk input type) combine.

As shown in fig. 19 and 20, a general combine harvester is configured such that a harvesting conveyor 102 is provided in a state of extending forward from a traveling vehicle body 101 in a swingable manner, the harvesting conveyor 102 conveys grain stalks to be harvested in accordance with the travel of the traveling vehicle body 101, the harvested grain stalks from the harvesting conveyor 102 are subjected to a stripping process, a threshing device 103 for performing a sorting process on a processed product obtained by the stripping process is mounted on a left half portion of the traveling vehicle body 101, a bagging device 104 is mounted on a right half portion of the traveling vehicle body 101, and the bagging device 104 is capable of accumulating and loading the single-grain grains obtained by the stripping process and the sorting process in the threshing device 103 into a grain bag.

The traveling vehicle body 101 is configured such that a pair of right and left crawler traveling devices 106 are provided at a lower portion of a vehicle body frame 105, and a riding section 107 is formed in a front right region of the vehicle body frame 105.

The harvesting conveyor 102 combs undivided grain stalks into grain stalks to be harvested and grain stalks outside the harvested objects by the grain dividers 108 provided at both left and right ends of the front portion of the traveling vehicle body 101 as the traveling vehicle body travels, rakes of the grain stalks to be harvested are raked forward and backward by the rotary reel 109 provided above the front portion of the harvesting conveyor 102, roots of the grain stalks to be harvested are cut by the pusher-type cutting mechanism 110 provided at the bottom of the harvesting conveyor 102, and the grain stalks to be harvested are taken in. The harvested straws, which are the harvested straws, are collected to a predetermined position in the left-right direction by a screw-conveying type auger 111 disposed behind the cutting mechanism 110, are fed backward, and are supplied to and conveyed to the threshing device 103 by a raking-up conveying type feeder 12 which is erected from the predetermined position to the threshing device 103.

The lifting and lowering of the harvesting conveyor 102 is performed by the expansion and contraction operation of a hydraulic lift cylinder 113 mounted across the body frame 105 and the feeder 12, with a feeder drive shaft 114, which is provided on the rear end of the feeder 112, which is the end of the harvesting conveyor 102 connected to the threshing device 103, facing left and right, as a fulcrum.

As shown in fig. 21 to 24, the threshing device 103 can be configured by dividing the threshing frame 115 connected to the vehicle body frame 105 into upper and lower parts 2. The upper frame part 115A of the threshing frame 115 is provided with a threshing part 103A for performing a threshing process on the harvested straws supplied from the feeder 112. The lower frame portion 115B of the threshing frame 115 is provided with a sorting unit 103B that performs sorting processing on the processing target to be sorted obtained by the stripping processing in the threshing unit 103A, and a collecting unit 103C that collects the processing target to be collected obtained by the sorting processing.

The threshing unit 103A is configured by providing a stick-shaped threshing drum 119 for performing a threshing process on a reaping stalk from the reaping conveyor 102 by rotating around a forward and backward facing threshing drum shaft 118 in a forward and rightward direction in a threshing chamber 117 formed by providing a U-shaped receiving net 116 or the like to the upper frame portion 115A as viewed in the front-rear direction.

The sorting unit 103B is configured by arranging, below the threshing unit 103A, an oscillating sorting mechanism 120 that performs oscillating sorting while transferring the processed object that has leaked from the receiving net 116 to the rear, a wind turbine (winnowing fan) 121 that supplies sorting air for fine sorting to the oscillating sorting mechanism 120, an auxiliary wind turbine (auxiliary winnowing fan) 122 that supplies sorting air for rough sorting to the oscillating sorting mechanism 120, a 2 nd wind turbine (second winnowing) 123 that supplies sorting air for the 2 nd type of object sorting to the oscillating sorting mechanism 120, and the like.

The collection unit 103C is configured by arranging, in series, a first collection unit 124 that collects, as the 1 st type object, the singulated grains that have leaked from the front side of the swing sorting mechanism 120 and flowed down while being subjected to the sorting wind from the wind turbine 121, and a second collection unit 125 that collects, as the 2 nd type object, the stemmed grains, the two-ply grains, and the like that have leaked down from the rear side of the swing sorting mechanism 120 and flowed down while being subjected to the sorting wind from the 2 nd wind turbine 123, below the swing sorting mechanism 120.

In the threshing part 103A, the threshing chamber 117 is formed by a partition such as a receiving net 116 covering the threshing roller 119 from below, an upper cover 126 covering the upper part of the threshing roller 119 from above so as to be openable and closable, a front side vertical plate member 127 rotatably supporting the front end part of the threshing roller shaft 118, a rear side vertical plate member 128 rotatably supporting the rear end part of the threshing roller shaft 118, and a stalk guide plate 129 including a guide surface 129A for guiding the reaping stalks from the feeder 112 to the receiving net 116 in a rearward rising inclined posture extending from the rear end of the feeder 112 to the front end of the receiving net 116. A supply port 130 through which the harvested straw conveyed by the feeder 112 can be supplied to the stripping chamber 117 is formed between the front side vertical plate member 127 and the straw guide plate 129. A stalk discharge port 132 through which discharge from the stripping chamber 117 as discharge of the threshed stalks such as the harvested stalks after the stripping treatment can be performed is formed between the plate-shaped rear side support member 131 supporting the rear end of the support net 116 and the rear side longitudinal plate member 128.

As shown in fig. 21, the stripping cylinder 119 is configured by connecting a raking-in part 133 forming a tip part of the stripping cylinder 119 and a stripping-treatment part 134 forming a rear part side of the stripping cylinder 119 to the stripping cylinder shaft 118 in a state in which they are connected in front and rear so as to rotate integrally in the right direction in front view about the stripping cylinder shaft 118.

The raking unit 133 is of a screw conveyance type: two helical blades 136 for raking and conveying are provided on the outer peripheral surface of a body section 135 formed in a tapered truncated cone shape, and the whole of the harvested straw from the feeder 112 guided by the straw guide plate 129 is raked in by the two helical blades 136 toward the rear by rotating rightward in front view about the rake roller shaft 118, or by the rake processing space s1 between the upper cover 126 and the rake processing section 134 or the receiving net 116. The body portion 135 may be provided with a different raking member such as a full comb or a stripping tooth instead of the spiral blade 136 as the raking portion 133.

The stripping section 134 is equipped with a stripping roller shaft 118 in such a manner that disk-shaped support plates 137, 138, which are formed at the front end or the rear end, are connected to the rear end of the raking section 133 by the front end support plate 137, and the rear end support plate 138 is located immediately before the rear side blade member 128. A disk-shaped partition plate 139 is provided on the stripping roller shaft 118 so as to be positioned at the middle or substantially the middle of the front and rear support plates 137 and 138, which are the front and rear middle portions of the stripping section 134. A plurality of (for example, 6) bar-shaped members 140 having a length extending across the front and rear support plates 137 and 138 are coupled to the respective outer peripheral portions of the support plates 137 and 138 and the partition plate 139 so as to be arranged at positions equidistant from the stripping roller shaft 118 in the circumferential direction of the stripping roller 119 at front and rear orientation along the stripping roller shaft 118, and a plurality of stripping teeth 141 are provided on the respective bar-shaped members 140 so as to be arranged at set intervals in the front and rear direction in an orientation projecting outward from the bar-shaped members 140 toward the stripping roller 119. Thus, a rod-shaped treatment cylinder communicating with the internal space s2 of the stripping chamber 117 is formed inside the stripping chamber 117.

Thus, the stripping treatment section 134 is configured to perform stripping treatment by striking of the stripping teeth 141 or by combing the stripping teeth 141 or the like on the harvested stalks in the stripping treatment space s1 between the receiving net 116 and the upper cover 126 by rotating around the stripping roller shaft 118 rightward in front view, and to perform stripping treatment by striking of the rod-shaped member 140 and the stripping teeth 141 or by combing the stripping teeth 141 into the internal space s2 while stirring the treated objects in the stripping treatment space s1 and the treated objects in the internal space s 2.

Further, by using the internal space s2 of the stripping section 134 as a processing space for stripping processing, even when a large number of harvested straws are supplied to the stripping chamber 117, accumulation of the processed object in the processing space and saturation of the processing space can be avoided, and thus, it is possible to prevent the processed object from leaking from the receiving net 116 in a state where sufficient stripping processing is not performed due to the accumulation of the processed object or the saturation of the processing space, or to prevent occurrence of a trouble such as damage to the power train of the stripping drum 119 due to an increase in load required for the stripping processing.

The partition plate 139 is formed of a circular plate provided around the stripping roller shaft 118 so as to close the upstream side portion of the internal space s2 formed in the stripping unit 134 from the rear side, and thereby, in the middle part of the front and rear of the threshing part 134 where the amount of the threshed grain is reduced, the partition plate 139 prevents the threshed grain from flowing downstream in the threshing direction in the internal space s2 of the threshing part 134, guides the threshed grain to the periphery of the threshing part 134 with the rotation of the threshing part 134, promotes the threshing by the striking or the combing of the threshed grain by the threshing teeth 141 and the like and the leakage of the single grain from the receiving net 116, therefore, the 3 rd loss caused by the single grain or the unhulled straw contained in the threshing material being discharged from the straw discharge port 132 at the downstream end in the threshing direction together with the threshing straw through the internal space s2 of the threshing part 134 can be prevented.

In addition, not only the plurality of stripping teeth 141 but also the plurality of rod-like members 140 function as stripping treatment members that act on the treatment object in the stripping chamber, so that the threshing performance and the threshing efficiency can be improved.

The rod-like member 140 may be made of round-tube steel, square-tube steel, round-bar steel, square-bar steel, angle steel, or channel steel. Each of the stripping teeth 141 may be made of a round bar steel material, a square bar steel material, a round tube steel material, a square tube steel material, or the like.

Inside the upper cover 126, a plurality of dust feed valves 142 are provided in a front-rear direction at predetermined intervals, for guiding the harvested straw and the processed material to the rear of the vehicle body, which are moved to the upper part of the stripping chamber 117 as the stripping roller 119 rotates rightward in front view about the stripping roller shaft 118.

As shown in fig. 21, the swing sorting mechanism 120 is configured as follows. That is, a screen box 144 which swings back and forth by the operation of an eccentric cam type swing drive mechanism 143 provided at the rear lower portion thereof is provided, a grain tray 145 for rough sorting, a rough sorting body 146 (hereinafter, also referred to as a chaff screen 146), and a document sorter 147 are provided at the upper portion of the screen box 144 so as to be connected in order from the front end of the screen box 144 to the rear, a grain tray 148 for fine sorting and a grain screen 149 are provided at the lower portion of the screen box 144 in order from the front to the rear, and a 2 nd sorting body 150 (hereinafter, also referred to as a 2 nd chaff screen 150) for the 2 nd type object sorting is provided at the rear of the grain screen 149 so as to be connected to the grain screen 149.

The grain pan 145 for rough separation is made of a metal plate material having a zigzag shape formed by bending a longitudinal side surface, and is disposed in a state where the upper surface thereof is positioned lower than the sub-windmill shaft 153 of the sub-windmill 122. Then, the processed matter having a high grain content, which has leaked from the front end of the receiving net 116 and has been accumulated on the grain tray 145, is transferred to the coarse separator 146 at the rear while being separated into dust such as straw chips having a low specific gravity and grains having a high specific gravity by the gravity difference and being layered up and down by swinging back and forth together with the sieve box 144. This can promote the grain in the rough-sorted material 146 to leak.

The rough-sorted grain 146 is a chaff screen 146 formed by arranging a plurality of chaff scrapers (チャフリップ plates) 146A in a right-left orientation at predetermined intervals in the front-rear direction. The chaff screen 146 swings back and forth together with the screen box 144, and performs screening processing on the processed matter from the front side of the receiving net 116 and the grain pan 145, and transfers the processed matter, which has not leaked between the chaff scrapers 146A, to the rear document feeder 147 while leaking grains and the like between the chaff scrapers 146A.

The husk screen 146 may be a movable type in which a plurality of husk scrapers 146A are coupled so as to be swingable in a front-rear direction so as to be adjustable in opening degree, or a fixed type in which a plurality of husk scrapers 146A are fixed in a predetermined rear inclined posture so as not to be adjustable in opening degree. As the rough sorting body 146, instead of the chaff sieve 146, a sorting plate in which a plurality of drop holes and sorting pieces are formed in a single flat plate in an aligned manner at set intervals may be used, or a document feeder in which a plurality of rack plates formed in a zigzag shape are disposed in an aligned manner at set intervals in the left-right direction in a front-rear facing posture may be used.

The document feeder 147 is configured by arranging a plurality of rack plates 147A formed in a zigzag shape in a cantilever state projecting rearward in an inclined posture rising rearward, in a left-right direction at a set interval. By swinging back and forth together with the screen box 144, the processed object from the rear side of the receiving net 116 and the rough separator 146 is subjected to a disentangling action by the left and right vibrations of the rack plates 147A, and the processed object that has not leaked from between the rack plates 147A is caused to flow down from the rear end of the document jogger 147 while leaking the grains and the like from between the rack plates 147A.

The grain pan 148 for fine separation is made of a flat plate-like metal plate material that is disposed in a downward and rearward inclined posture on the front side of the rough separation body 146 and has no irregularities over the entire length, so that it is less likely to be an obstacle to wind conveyance by the separation wind from the sub-wind turbine 122. The processed product having a high grain content that has leaked from the front side of the rough separator 146 is guided to the grain sieve 149 by swinging back and forth together with the sieve box 144.

The grain sieve 149 is composed of a corrugated net or a resin net disposed in a rearward upward inclined posture below the rear side of the rough-sorted body 146. Further, by swinging back and forth together with the screen box 144, the processed product having a high grain content from the rough-sorted grain body 146 and the grain pan 148 for the fine sorting is subjected to the screening process, and while the single grain grains are dropped as the 1 st seed object, the branch-peduncle-carrying grains, the double-stranded grains, and the like which are not dropped are transferred as the 2 nd seed object together with the stalk chips and the like to the 2 nd sorted body 150 in the rear direction.

The 2 nd sorting body 150 employs a 2 nd chaff screen 150 configured by arranging a plurality of chaff scrapers 150A in a right-and-left orientation and in a front-and-rear direction at set intervals. The 2 nd chaff screen 150 is disposed at the rear of the screen box 144 in an inclined posture so that the rear end thereof is close to the rear vertical wall 144A of the screen box 144 and rises upward rearward, and by swinging forward and rearward together with the screen box 144, the processed matter from the rear end portion of the receiving net 116, the straw feeder 147, and the grain screen 149 is subjected to screening processing, and while grain with branches and double-stranded grains are leaked as the 2 nd species from between the chaff scrapers 150A, the processed matter such as long straw chips that have not leaked from between the chaff scrapers 150A is transferred rearward of the screen box 144.

The grain sieve 149 and the 2 nd chaff sieve 150 are arranged in a straight line in front and rear in side view, and the chaff sieve 146 and the 2 nd chaff sieve 150 are arranged in front and rear with a step so that the front end portion of the 2 nd chaff sieve 150 is arranged at a lower height than the rear end portion of the chaff sieve 146.

The 2 nd chaff screen 150 may be a movable type in which a plurality of chaff scrapers 150A are coupled so as to be swingable in a front-rear direction so as to be adjustable in opening degree, or a fixed type in which a plurality of the chaff scrapers 150A are fixed in a predetermined backward inclined posture so as not to be adjustable in opening degree.

The wind turbine 121 is disposed at the front lower side of the swing sorting mechanism 120, and is configured to generate sorting air by rotating in a left-turn direction as viewed from the left side with the wind turbine shaft 151 oriented to the left and right as the center, and the sorting air is supplied for fine sorting between the grain sieve 149 and the 1 st collecting part 124, the entire area of the grain sieve 149, and between the grain sieve 149 and the 2 nd chaff sieve 150 blown through the rear upper part from an air outlet 152A formed at the rear lower part of the wind turbine case 152.

The air outlet 152A of the wind turbine 121 is provided with a wind direction plate 152B that separates the sorted wind from the wind turbine 121 into an upper wind blowing through the grain sieve 149 and the vicinity of the bottom surface of the grain sieve 149 and a lower wind blowing through the vicinity above the 1 st recovery unit 124. The wind direction plate 152B includes a throttle surface 152Ba for increasing the flow velocity of the upper wind in the upper portion, and a wind direction portion 152Bb for correcting the blowing direction of the lower wind to be horizontal or near horizontal extends rearward and downward from the rear end portion.

Accordingly, the wind power sorting in which the sorting wind from the wind turbine 121 acts from the front lower side on the processed object that has leaked down from the grain sieve 149 and has flowed down to the 1 st recovery part 124 and the processed object selected by the sieving of the grain sieve 149, and dust such as straw chips having a small specific gravity can be blown off from these processed objects and conveyed to the rear upper side by wind power can be performed, and by this wind power sorting, the 1 st recovery processing in which the singulated grains leaked down from the grain sieve 149 are recovered to the 1 st recovery part 124 while preventing the dust such as straw chips from being mixed into the 1 st recovery part 124 can be performed with high accuracy.

In particular, the relatively large stalk chips can be sorted with high equivalent efficiency by applying the overfire air having a flow velocity increased to the processed matter just after the leakage from the grain sieve 149, and the relatively small stalk chips remaining in the processed matter can be sorted with high accuracy by blowing the processed matter from which the relatively large stalk chips are removed and which flows down to the vicinity of the 1 st recovery part 124 with the overfire air being applied to the vicinity above the 1 st recovery part 124 horizontally or substantially horizontally.

The sub-wind turbine 122 is disposed in a space on the front side of the swing sorting mechanism 120 relative to the straw guide plate 129 disposed so as to cover the raking portion 133 of the stripping drum 119 from below, and is configured to generate sorting air by rotating in a left-turn direction as viewed from the left side about a left-right oriented sub-wind axis 153, and to supply the sorting air from an air outlet 154A formed in the rear lower portion of the sub-wind box 154 as rough sorting between an upper wind direction plate 155 in a downward-rearward inclined posture and a lower wind direction plate 156 horizontally protruding forward from a grain pan for refining 148, between the chaff sieve 146 and the grain pan for refining 148 and the grain sieve 149, and between the straw separator 147 and the 2 nd chaff sieve 150, which blow through an upper wind direction plate 155 disposed on the bottom surface of the grain pan for rough sorting 145. The outer diameter (rotation diameter) of the sub-wind turbine 122 in side view is set to 1/2 (or approximately 1/2) of the outer diameter (rotation diameter) of the wind turbine 121 in side view.

Accordingly, the separation air from the sub-wind turbine 122 can effectively act on the processed object that has leaked down from the chaff screen 146 and flowed down to the grain pan 148 for the fine separation and the grain screen 149 and the processed object that has flowed down from the rear end portion of the receiving net 116 and the document sorter 147 in a state where the flow velocity is increased by passing through the space narrowed backward between the upper wind deflector 155 and the lower wind deflector 156, and as a result, the wind separation in which the dust such as straw chips having a small specific gravity is blown off from these processed objects and is wind-conveyed upward and rearward can be performed satisfactorily, and the flow of the dust such as straw chips to the grain screen 149 or the 2 nd chaff screen 150 can be more reliably suppressed by this wind separation, and the separation efficiency and the separation accuracy in the grain screen 149 and the 2 nd chaff screen 150 can be improved.

Further, since the separation wind from the sub-wind turbine 122 is hard to pass between the husk scrapers 146A of the husk sieve 146, the separation wind from the sub-wind turbine 122 strongly passes between the husk scrapers 146A of the husk sieve 146, and hence the leakage from the husk sieve 146 is suppressed, and the reduction in separation efficiency due to the increase in the amount of the processed material transferred to the rear document sorter 147 can be prevented.

The 2 nd wind turbine 123 is disposed between the 1 st collecting unit 124 and the 2 nd collecting unit 125 in the front and lower portion of the 2 nd chaff screen 150, and is configured to generate a sort wind by rotating in a left-turn direction as viewed from the left side with the 2 nd wind turbine shaft 157 oriented in the left-right direction as the center, and to supply the sort wind from an outlet 158A formed in the rear upper portion of the 2 nd wind turbine casing 158 to the rear vertical wall 144A of the screen casing 144 as the rear vertical wall of the swing sorting mechanism 120 as a 2 nd sort wind that passes through the lower portion of the 2 nd chaff screen 150 and blows from the rear end portion of the 2 nd chaff screen 150 to the rear upper portion. The outlet 158A projects rearward so that its downstream end in the outlet direction coincides or substantially coincides with the front end of the 2 nd chaff screen 150 in the forward-rearward direction, and the upper and lower guide surfaces thereof are formed into a front narrowing shape in which the vertical interval is narrower toward the downstream side in the outlet direction. The guide surface on the upper side of the outlet 158A is formed in a shape curved in an inverted V shape in side view.

That is, the sorted wind from the 2 nd wind turbine 123 can be blown out from the vicinity of the tip end of the 2 nd chaff screen 150 while the flow rate is increased by the narrow-front-portion air outlet 158A, thus, the sorting wind from the 2 nd wind turbine 123 can be made to effectively act on the processed material which leaks from the 2 nd chaff screen 150 and flows down to the 2 nd collection unit 125, and as a result, it is possible to perform wind sorting in which dust such as straw chips having a small specific gravity is blown off from the processed material and is wind-conveyed from the rear end portion of the 2 nd chaff screen 150 to the rear upper side together with long straw chips and the like which are retained at the rear end portion of the 2 nd chaff screen 150 by being hooked to the chaff scraper 150A, by this air separation, the 2 nd recovery process of recovering the branched grain, the double grain, and the like leaked from the 2 nd chaff sieve 150 to the 2 nd recovery part 125 can be performed with high accuracy while preventing the dust such as straw chips from being mixed into the 2 nd recovery part 125.

Further, since the classifying air from the 2 nd wind turbine 123 is hard to pass between the husk scrapers 150A disposed on the front side of the 2 nd husk sieve 150, the classifying air from the wind turbine 121 and the sub-wind turbine 122 merged in the vicinity of the rear end portion of the husk sieve 146 is not easily affected, and the classifying air from the 2 nd wind turbine 123 passes strongly between the husk scrapers 150A on the front side of the 2 nd husk sieve 150, so that the leakage from the front side of the 2 nd husk sieve 150 is suppressed, and the reduction in grain recovery efficiency due to the increase in grains transferred to the rear of the sieve box 144 can be prevented.

In the collecting unit 103C, the 1 st collecting unit 124 is formed in a side view bottom narrowing shape that guides the 1 st object that has leaked from the grain sieve 149 to flow down toward the 1 st object sending region at the bottom. The 2 nd collecting part 125 is formed in a bottom narrowing shape in side view for guiding the 2 nd type objects dropped from the 2 nd chaff screen 150 to flow down toward the 2 nd type object sending-out region at the bottom. Further, an outlet 158A of the 2 nd wind box 158 is extended from the front side to cover the front upper side of the 2 nd recovery portion 125.

The 1 st collecting section 124 is provided at the bottom thereof with a1 st conveying screw 160 that conveys the 1 st object flowing down to the 1 st object discharge area of the 1 st collecting section 124 to the right by rotating in a left-turn direction as viewed from the left side about a1 st screw shaft 159 that is oriented in the left-right direction. The 2 nd collecting section 125 is provided at the bottom thereof with a 2 nd conveying screw 162 which rotates in a left-turn direction as viewed from the left side about a 2 nd screw shaft 161 facing the left and right and conveys the 2 nd object flowing down to the 2 nd object discharge region of the 2 nd collecting section 125 to the right.

A bucket conveyor 163 for conveying the 1 st object conveyed by the 1 st conveyor screw 160 to the upper portion of the bagging device 104 is linked to the right end portion of the 1 st conveyor screw 160. A reprocessing mechanism 164 for performing the stripping process again on the 2 nd object conveyed by the 2 nd conveyor screw 162 and a 2 nd reduction screw 165 for reducing and conveying the 2 nd object after the reprocessing by the reprocessing mechanism 164 to the grain pan 145 for rough sorting are linked to the right end portion of the 2 nd conveyor screw 162.

A shredder 166 is provided at a lower portion of the rear end of the threshing device 103 for shredding the threshed straw flowing out from the straw discharge port 132 along with the threshing process and long straw chips fed to the rear of the swing sorting mechanism 120 by the sorting process and discharging them to the outside of the machine. The shredder 166 is configured to shred the grain-removed stalks and the like by rotating a plurality of rotating blades 170, which are disposed in a left-turn direction as viewed from the left side about a shredder shaft 169 oriented in the left-right direction, with respect to a plurality of fixed blades 168 disposed in alignment at a predetermined interval in the left-right direction and a plurality of rotating blades 170 disposed in alignment at a predetermined interval in the circumferential direction and the left-right direction on the shredder shaft 169 oriented in the left-right direction, inside a stalk discharge cover 167 coupled to a lower portion of a rear end of the threshing device 103.

As shown in fig. 20 and 25, in the combine harvester, an engine 172 is provided below an operator seat 171 on which an operator 107 is mounted, and power from the engine 172 is branched into a travel use and a work use at an output shaft 173 extending leftward from the engine 172.

As shown in fig. 25, the power for traveling is transmitted from the output shaft 173 of the engine 172 to the left and right crawler traveling devices 106 via the transmission mechanism a for traveling. The transmission mechanism a for traveling is composed of a belt-drive transmission mechanism 174, a hydrostatic continuously variable transmission 175, a gear-type transmission mechanism (not shown) incorporated in a transmission case 176, and the like.

As shown in fig. 22, 23, and 25, the power for work is transmitted from the output shaft 173 of the engine 172 to the harvesting conveyor 102 and the threshing device 103 via the transmission mechanism B for work. The harvesting conveyor 102 includes a rotary reel 109, a cutting mechanism 110, an auger 111, and a feeder 112 as a driven machine C driven by power from an engine 172. The threshing apparatus 103 includes, as a driven machine D driven by power from an engine 172, a stroking roller 119, a swing sorting mechanism 120, a wind turbine 121, a sub-wind turbine 122, a 2 nd wind turbine 123, a1 st transport screw 160, a 2 nd transport screw 162, a raising conveyor 163, a reprocessing mechanism 164, a 2 nd reduction screw 165, and a shredder 166.

The working transmission mechanism B decelerates and transmits the power from the engine 172 from the output shaft 173 of the engine 172 to the right end portion of the windmill shaft 151 via the belt transmission type transmission mechanism 177, and branches into a high-speed transmission system H and a low-speed transmission system L at the right end portion, which is the end portion on the upstream side in the transmission direction of the windmill shaft 151.

The high-speed transmission system H is configured to increase the speed of the rotational power of the windmill shaft 151 from the left end portion, which is the end portion on the downstream side in the transmission direction of the windmill shaft 151, to the left end portion of the sub-windmill shaft 153, the left end portion of the 2 nd windmill shaft 157, and the relay shaft 179 via the belt-driven 1 st transmission mechanism 178, and to increase the speed of the rotational power of the windmill shaft 179 from the relay shaft 179 to the left end portion of the shredder shaft 169 via the belt-driven 2 nd transmission mechanism 180.

The low speed transmission system L is configured as a 2-stage speed reduction type in which the rotational power of the windmill shaft 151 is transmitted at a reduced speed from the right end of the windmill shaft 151 to the right end of the left-right idler shaft 182 via the belt-driven 1 st speed reduction mechanism 181, and from the left end of the idler shaft 182 to the left end of the 1 st screw shaft 159 and the left end of the 2 nd screw shaft 161 via the belt-driven 2 nd speed reduction mechanism 183, and is configured to transmit the rotational power of the 2 nd screw shaft 161 at a reduced speed to the swing shaft 185 of the swing sorting mechanism 120 via the belt-driven 3 rd transmission mechanism 184.

That is, in the working transmission mechanism B, by branching the right end portion of the windmill shaft 151 for transmitting power from the engine 172 into the high-speed transmission line H and the low-speed transmission line L, the load acting on the windmill shaft 151 can be reduced as compared with the case where the left end portion of the windmill shaft 151 is branched into the high-speed transmission line H and the low-speed transmission line L.

Further, the wind turbines 121, the sub-wind turbines 122, and the 2 nd wind turbine 123 can be driven to rotate at high speed, and thus strong separation wind can be generated from the wind turbines 121 to 23, and as a result, the separation accuracy of the wind separation can be improved. Further, the shredder 166 can also be driven to rotate at a high speed, and as a result, a high shredding performance can be ensured as the shredder 166.

On the other hand, the 1 st and 2 nd conveyor screws 160, 162 can be driven at a low speed at which damage to the grains by these screws is less likely to occur, and as a result, deterioration in the quality of the grains due to damage to the grains by conveyance by the 1 st and 2 nd conveyor screws 160, 162 can be prevented. Further, the swing sorting mechanism 120 can be driven to swing at a low speed, and thus a reduction in grain recovery efficiency and the occurrence of the 3 rd loss due to grain bouncing caused by the high-speed swing driving of the swing sorting mechanism 120 can be prevented.

Further, by configuring the low speed transmission system L to be of the 2-stage reduction type, the gear ratio of the 1 st reduction mechanism 181 and the 2 nd reduction mechanism 183, etc. can be made small, and therefore, a smaller diameter can be adopted as the pulleys 181A, 181B, 183A to 183C provided in the 1 st reduction mechanism 181 and the 2 nd reduction mechanism 183, etc., and therefore, interference with other objects such as the pulleys 181A, 181B, 183A to 183C, etc. can be easily avoided, and reduction transmission from the windmill shaft 151 to the conveyor screws 160, 162, etc. can be easily performed.

The working transmission mechanism B includes a stroking cylinder transmission system L1 for transmitting power from the engine 172 to the stroking cylinder shaft 118 and a harvesting conveyor transmission system L2 for transmitting power to the feeder drive shaft 114 as an input shaft of the harvesting conveyor device 102 in parallel.

The stripping roller transmission system L1 is configured such that power from the engine 172 via the windmill shaft 151 and the idler shaft 182 as a relay transmission shaft is transmitted from the left end of the idler shaft 182 to the left end of a left-right oriented transmission shaft 188 provided in the transmission case 187 via a stripping roller transmission mechanism 186 as a stripping roller input shaft, and from the right end of the transmission shaft 188 to the stripping roller shaft 118 via a bevel gear transmission mechanism 189, the transmission case 187 is connected to the upper front end of the upper frame portion 115A of the threshing frame 115, the transmission shaft 188 is provided in the left half of the transmission case 187 such that the left end thereof protrudes laterally outward from the left end of the transmission case 187, and the bevel gear transmission mechanism 189 is built in the left-right center portion of the transmission case 187.

The harvesting conveyor power transmission system L2 is configured to transmit power from the engine 172 via the windmill shaft 151 and the idler shaft 182 from the left end of the idler shaft 182 to the left end of the feeder drive shaft 114 via the harvesting conveyor power transmission mechanism 190, and the harvesting conveyor power transmission mechanism 190 employs an intermittent belt tension clutch capable of transmitting power from the idler shaft 182 to the feeder drive shaft 114.

The power transmitted to the feeder drive shaft 114 is transmitted to the 1 st relay shaft 192 facing left and right through the 1 st power transmission mechanism 191 of the chain type, transmitted from the 1 st relay shaft 192 to the cutting mechanism 110 through the link mechanism 193, transmitted from the 1 st relay shaft 192 to the auger shaft 195 facing left and right through the 2 nd power transmission mechanism 194 of the chain type, transmitted from the auger shaft 195 to the 2 nd relay shaft 197 facing left and right through the 3 rd power transmission mechanism 196 of the chain type, and transmitted from the 2 nd relay shaft 197 to the reel shaft 199 facing left and right through the 4 th power transmission mechanism 198 of the belt transmission type.

In the right half of the transmission case 187, a left-right-facing reverse rotation shaft 200 is provided so that the right end portion of the reverse rotation shaft 200 protrudes laterally outward from the right end portion of the transmission case 187, and rotates integrally with a reverse rotation power extracting bevel gear 189A provided in a bevel gear type transmission mechanism 189. A counter-rotation transmission mechanism 201 capable of transmitting counter-rotation power from the counter-rotation shaft 200 to the feeder drive shaft 114 is provided across the right end of the counter-rotation shaft 200 and the right end of the feeder drive shaft 114. In the reverse rotation transmission mechanism 201, a belt tension clutch is used which can intermittently transmit the reverse rotation shaft 200 to the feeder drive shaft 114.

That is, at the time of harvesting work, the harvesting conveyor 102 can be driven to rotate forward and the grain stalks can be harvested and conveyed by setting the harvesting conveyance transmission mechanism 190 in a transmission state and the reverse rotation transmission mechanism 201 in a cut-off state. Further, when the harvesting conveyor 102 is clogged, the harvesting conveyor 102 can be driven to rotate in the reverse direction by switching the transmission mechanism 190 for harvesting conveyance to the cut-off state and the transmission mechanism 201 for reverse rotation to the transmission state, and the grain stalks clogged in the harvesting conveyor 102 can be easily removed.

As shown in fig. 22, 23, and 25 to 27, the drive shaft 188 of the stroking roller drive train L1 is attached to the left half of the drive case 187 coupled to the upper end of the upper frame part 115A of the threshing frame 115 as described above, the feeder drive shaft 114 is coupled to the lower end of the upper frame part 115A of the threshing frame 115 via a pair of left and right bearing members 202, and the idler shaft 182 is coupled to the upper end of the lower frame part 115B of the threshing frame 115 via a pair of left and right bearing members 203 so as to be positioned closer to the auxiliary windmill shaft than the windmill shaft 151 between the windmill shaft 151 and the auxiliary windmill shaft 153, outside the front end of the threshing device 103 which is a connection end to the harvesting conveyor 102.

That is, a drive shaft 188 as an input shaft for the stripping roller, a feeder drive shaft 114 as an input shaft of the harvesting conveyor 102, and the idler shaft 182 are arranged in the vertical direction from the upper portion to the lower portion of the threshing device 103 in this order in a state where the idler shaft 182 is close to the drive shaft 188 and the feeder drive shaft 114 and substantially along the front end of the threshing device 103. Thus, the transmission mechanism 186 for the stripping drum, which links the idler shaft 182 to the transmission shaft 188, and the transmission mechanism 190 for the harvest transport, which links the idler shaft 182 to the feeder drive shaft 114, can be compactly arranged in a state where the vertical direction of the front-rear width is narrow and the vertical length thereof is shortened as much as possible at the connecting portion between the harvest transport apparatus 102 and the threshing apparatus 103.

As shown in fig. 22, 23, and 26, the driving mechanism 186 for the stripping roller includes a small-diameter 1 st pulley 186A and a large-diameter 2 nd pulley 186B (an example of a pair of driving rotating bodies), and is configured as a belt driving type in which these pulleys 186A and 186B are wound and interlocked with each other by a driving belt 186C. The 1 st pulley 186A is constituted by a boss portion 186Aa fitted to the left end portion of the idler shaft 182 so as to rotate integrally with the idler shaft 182, and a small-diameter outer peripheral portion 186Ab that is bolted to the boss portion 186Aa from the left outer side so as to rotate integrally with the boss portion 186 Aa. The 2 nd pulley 186B is constituted by a boss portion 186Ba fitted externally to the left end portion of the transmission shaft 188 so as to rotate integrally with the transmission shaft 188, and a large-diameter outer peripheral portion 186Bb bolted to the boss portion 186Ba from the left outer side so as to rotate integrally with the boss portion 186 Ba. The hub portions 186Aa and 186Ba and the outer peripheral portions 186Ab and 186Bb are configured such that the fitting diameters and the connecting portions of the hub portions 186Aa and 186Ba and the outer peripheral portions 186Ab and 186Bb are matched to each other, so that the outer peripheral portions 186Ab and 186Bb can be replaced with the hub portions 186Aa and 186 Ba.

With this configuration, the transmission mechanism 186 for the stripping roller is configured such that the transmission state of the stripping roller 119 can be switched between a low-speed transmission state for soybean in which the small-diameter outer peripheral portion 186Ab is bolted to the hub portion 186Aa that rotates integrally with the idler shaft 182 and the large-diameter outer peripheral portion 186Bb is bolted to the hub portion 186Ba that rotates integrally with the transmission shaft 188, and a high-speed transmission state for rice and wheat in which the large-diameter outer peripheral portion 186Bb is bolted to the hub portion 186Aa that rotates integrally with the idler shaft 182 and the small-diameter outer peripheral portion 186Ab is bolted to the hub portion 186Ba that rotates integrally with the transmission shaft 188, by replacing the hub portions 186Aa and 186Ba with the outer peripheral portions 186Ab and 186 Bb.

As shown in fig. 22, 23, 25 and 26, the feeder drive shaft 114, the idler shaft 182 and the transmission shaft 188 are extended outward to the left so that the left end portions thereof are positioned at the left end of the traveling vehicle body 101, the left end portion of the idler shaft 182 is connected by a key, and the output pulley 190A of the transmission mechanism 190 for harvesting conveyance, which is the transmission rotating body on the most upstream side in the transmission direction in the harvesting conveyance transmission line L2, is fitted over the left end portion of the idler shaft 182 so as to rotate integrally with the idler shaft 182, the output pulley 183a of the 2 nd speed reduction mechanism is integrally formed at the right end portion of the output pulley 190A, and the hub portion 186Aa of the 1 st pulley 186A is integrally formed at the left end portion of the output pulley 190A.

As shown in fig. 19 and 20, a1 st cover 104 and a 2 nd cover 205 (examples of covers covering the power transmission mechanism of the threshing power transmission system, respectively) which cover the power transmission mechanism 186 for the threshing cylinder and the power transmission mechanism 190 for harvesting conveyance, etc. provided at the left outer end portion of the threshing device 103 from the left outer side, and a 3 rd cover 206 which covers the 1 st power transmission mechanism 178, the 2 nd power transmission mechanism 180, the 2 nd speed reduction mechanism 183, the 3 rd power transmission mechanism 184, etc. provided at the left outer lower portion of the threshing device 103 together with the 2 nd cover 205 from the left outer side are detachably provided at the left side portion of the threshing device 103, and a 4 th cover 207 which covers the left side portion of the threshing device 103A from the left outer side is provided so as to be capable of performing an opening and closing swing operation with a longitudinal axis provided at the rear end portion thereof as a fulcrum.

According to the above configuration, the transmission mechanism B for work can easily switch the transmission state to the stripping roller 119 to the high speed transmission state for rice and wheat and the low speed transmission state for soybean by detaching the 1 st cover 104 and the 2 nd cover 205 from the left side portion of the threshing device 103 and replacing the outer peripheral portions 186Ab, 186Bb of the transmission mechanism 186 for stripping roller positioned at the left end portion of the traveling vehicle body 101 with the boss portions 186Aa, 186Ba, and as a result, when harvesting rice, wheat, or the like which is difficult to be damaged, the throughput can be improved by switching the transmission state of the stripping roller 119 to a high-speed transmission state for rice and wheat, when soybeans which are easily damaged are harvested, the transmission state of the stripping roller 119 is switched to a low-speed transmission state for soybeans, so that the quality of the soybeans can be prevented from being degraded due to damage during the stripping treatment.

Further, regardless of the switching of the transmission state of the stripping drum 119, the driving speed when the harvesting conveyor 102 is driven in the forward rotation direction and the driving speeds of the swing sorting mechanism 120, the windmills 121 to 23, the conveying screws 160, 162, 165, and the shredder 166 can be maintained constant, and thus, the lowering of the harvesting conveying performance in the harvesting conveyor 102, the lowering of the sorting performance and the sorting efficiency in the sorting unit 103B, the lowering of the conveying performance of the conveying screws 160, 162, 165, the lowering of the shredding performance of the shredder 166, and the like, which are caused by the switching of the transmission state of the stripping drum 119, can be prevented.

In addition, instead of the above-described structure, the transmission mechanism B for work may be configured as follows, for example.

The high-speed transmission system H is configured to increase the speed of the rotational power of the windmill shaft 151 from the right end portion, which is the end portion on the upstream side in the transmission direction of the windmill shaft 151, to the right end portion of the sub-windmill shaft 153, the right end portion of the 2 nd windmill shaft 157, and the right end portion of the chopper shaft 169.

The low speed transmission system L is configured to decelerate and transmit the rotational power of the windmill shaft 151 from the right end portion, which is the end portion on the upstream side in the transmission direction of the windmill shaft 151, to the right end portion of the 1 st screw shaft 159, the right end portion of the 2 nd screw shaft 161, and the right end portion of the swing shaft 185.

The stroking cylinder transmission system L1 is configured to transmit power from the right or left end of the windmill shaft 151 or the right end of the idler shaft 182 to the stroking cylinder 119.

The harvesting conveyor transmission system L2 is configured to transmit power from the right or left end of the windmill shaft 151 or the right end of the idler shaft 182 to the harvesting conveyor 102.

In [ 5 ], the 1 st transmission mechanism 178 and the 2 nd transmission mechanism 180 of the high speed transmission system H, the 1 st reduction mechanism 181 and the 2 nd reduction mechanism 183 of the low speed transmission system L, and the like are of a chain transmission type, or the 1 st reduction mechanism 181 of the low speed transmission system L is of a gear transmission type.

A chain drive type or a gear drive type is used as the drive mechanism 186 for the stripping drum and the drive mechanism 190 for the harvesting conveyance.

The transmission mechanism 186 for the stripping roller is configured to switch the transmission to the stripping roller 119 to 2-high by switching the transmission itself between a transmission shaft (the idler shaft 182 or the windmill shaft 151) on the transmission direction downstream side and a pair of transmission rotating bodies (a structure in which the boss portions 186Aa and 186Ba and the outer peripheral portions 186Ab and 186Bb are integrally formed) of the transmission shaft 188 on the transmission direction downstream side, which are interlocked and connected via the transmission mechanism 186. Alternatively, the transmission to the stripping roller 119 is switched to the high-low 2 stage by replacing a pair of transmission rotating bodies (a structure in which a hub portion and an outer peripheral portion are integrally formed) dedicated to low-speed transmission and a pair of transmission rotating bodies (a structure in which a hub portion and an outer peripheral portion are integrally formed) dedicated to high-speed transmission, which are provided for the combine, with the transmission shaft (the idler shaft 182 or the windmill shaft 151) on the transmission direction downstream side and the transmission shaft 188 on the transmission direction downstream side, which are linked together via the transmission mechanism 186 for the stripping roller. Alternatively, the hub parts of the transmission rotating bodies, which are configured to be used for both high and low transmissions, are fitted to the transmission shaft (the idler shaft 182 or the windmill shaft 151) on the transmission direction downstream side and the transmission shaft 188 on the transmission direction downstream side, which are linked via the transmission mechanism 186 for the stripping roller, so as to rotate integrally with each other, and the transmission to the stripping roller 119 is switched to the high or low 2-stage by replacing the outer peripheral parts of the pair of transmission rotating bodies dedicated for low-speed transmission and the pair of transmission rotating bodies dedicated for high-speed transmission, which are attached to the combine, for the respective hub parts.

The bevel gear 189A for taking out the reverse rotation power, the reverse rotation shaft 200, and the transmission mechanism 201 for reverse rotation are not provided, and thus the reverse rotation driving of the mowing conveyance device 102 is not performed [ 8 ].

As shown in fig. 19, 22, and 23, a working oil tank 208 is provided at a position immediately before the threshing device 103 of the vehicle body frame 105, utilizing a space below the idler shaft 182.

As shown in fig. 21, the swing sorting mechanism 120 is configured such that the forward swing limit position of the front end thereof coincides (may substantially coincide) with the front end of the receiving net 116 (the front end of the stripping section 134 of the stripping roller 119) in the forward-backward direction by shortening the forward-backward length and the forward extension length of the rough-sorted grain pan 145 provided on the upper portion of the front end thereof. Further, a leakage prevention mechanism 209 for preventing leakage of the processed material to the front of the swing sorting mechanism 120 is provided over the rear end portion of the straw guide plate 129 used in the support member for supporting the front end of the receiving net 116 and the front end of the swing sorting mechanism 120. The leakage prevention mechanism 209 is composed of an upper leakage prevention plate 209A hanging downward from the rear end of the straw guide plate 129, and a lower leakage prevention plate 209B standing on the front end of the screen box 144. Canvas, rubber sheet, or the like is used for each of the leak prevention plates 209A and 209B.

According to this configuration, the swing sorting mechanism 120 can be prevented from swinging unnecessarily forward of the front end position of the receiving net 116, and thus a large space can be secured in front of the swing sorting mechanism 120 between the wind turbine 121 and the straw guide plate 129, and by installing the large-sized sub-wind turbine 122 in the space, more sufficient sorting wind can be secured for a large amount of processed objects.

Further, the swing limit to the front of the swing sorting mechanism 120 is set to the front end position of the receiving net 116 or the vicinity of the front end position, and the processed object leaked from the front end portion of the receiving net 116 can be reliably supplied to the swing sorting mechanism 120, and the decrease in grain recovery rate due to the processed object leaking to the front of the swing sorting mechanism 120 can be prevented.

As shown in fig. 21, the swing sorting mechanism 120 extends the rear end side of the screen box 144 rearward so that the rear end of the screen box 144, which is the rear end thereof, is located in the vicinity of the rear end of the stroking roller 119 (the rear end of the stroking treatment unit 134) rearward of the rear end of the receiving net 116. The 2 nd chaffer sieve 150 has its front end side projected forward so that its front end coincides or substantially coincides with the rear end of the chaffer sieve 146 in the front-rear direction, and has its rear end side projected to the rear end of the sieve box 144.

That is, the swing sorting mechanism 120 is provided in the vicinity of the rear side of the stroking roller 119 (the stroking processing portion 134) so that the rear end of the swing sorting mechanism 120 is positioned closer to the rear end of the stroking roller 119 (the rear end of the stroking processing portion 134) than the rear end of the receiving net 116, and thus, the processed object leaking from the rear end of the receiving net 116 can be reliably supplied to the swing sorting mechanism 120, and a drop in the grain recovery rate due to the processed object leaking rearward of the swing sorting mechanism 120 can be prevented. Further, since the processing area (under-drain area) of the 2 nd chaff screen 150 is increased, the sorting throughput of the 2 nd chaff screen 150 with respect to the 2 nd processed item can be improved.

The state (position) of the swing sorting mechanism 120 indicated by a solid line in fig. 21 is a state in which the front end of the swing sorting mechanism 120 reaches the swing limit position in the front direction, and the state (position) of the rear end portion of the swing sorting mechanism 120 indicated by a phantom line (two-dot chain line) in fig. 21 is a state in which the rear end of the swing sorting mechanism 120 reaches the swing limit position in the rear direction.

As shown in fig. 21 and 24, the rear support member 131 is provided with a stalk guide plate 210 which extends from a lower portion thereof in a rearward descending inclined posture toward the rear of the swing sorting mechanism 120 and guides discharge of the threshing stalks, long stalk chips, and the like flowing down from the stalk discharge port 132 to the shredder 166 provided at the rear of the swing sorting mechanism 120. This prevents the discharge of the threshing straw, long straw chips, and the like, which flows down from the straw discharge port 132 without leaking from the receiving net 116, from being fed to the 2 nd chaff screen 150 of the 2 nd chaff screen 150, which reduces the sorting efficiency and sorting accuracy.

As shown in fig. 21, the husk sieve 146 is disposed in a state biased toward the front side with respect to the partition plate 139 so that the longitudinal length L a from the partition plate 139 disposed at the front-rear middle portion of the stripping section 134 of the stripping roller 119 to the front end of the husk sieve 146 is longer than the longitudinal length L b from the partition plate 139 to the rear end of the husk sieve 146, that is, in the swing sorting mechanism 120, the processing area (drop-out area) of the husk sieve 146 on the front side with respect to the partition plate 139 is secured to be large, whereby even if a large amount of the processed object stripped by the partition plate 139 drops to the front side of the swing sorting mechanism 120, the processed object can be roughly sorted efficiently by the husk sieve 146.

The grain pan 145 for rough separation has a front-rear length substantially equal to the front-rear length L a from the partition plate 139 to the front end of the chaff sieve 146 (or a length shorter than the front-rear length L a from the partition plate 139 to the front end of the chaff sieve 146), and the rear end of the grain pan 145 for rough separation and the front end of the chaff sieve 146 are positioned at the front-rear intermediate portions of the front-end support plate 137 and the partition plate 139.

As shown in fig. 22 and 23, a pair of left and right front pillar members 211 and a pair of left and right rear pillar members 212 that support the front side of the threshing section 103A are erected from the front and rear of the lower frame section 115B of the threshing frame 115 across the inlet ports 152C for the windmill formed at the left and right ends of the windmill casing 152. Further, a wind turbine support member 213 oriented in the front-rear direction is provided so as to extend across the lower portion of the front pillar member 211 and the lower portion of the rear pillar member 212 on the same right and left sides, and the wind turbine support member 213 oriented in the front-rear direction rotatably supports the right and left end portions of the wind turbine shaft 151 so as to cross the air inlet 152C for the wind turbine. Further, a front-rear oriented sub-windmill support member 214 is provided so as to cross the sub-windmill intake ports 154B formed at both left and right end portions of the sub-windmill casing 154, spanning the upper portion side of the front pillar member 211 and the upper portion side of the rear pillar member 212 located on the same left and right sides, and the front-rear oriented sub-windmill support member 214 rotatably supports the left and right end portions of the sub-windmill shaft 153.

That is, since the wind turbine 121 and the sub-wind turbine 122 are supported by the pair of left and right front pillar members 211 and the pair of left and right rear pillar members 212, which are configured to have high strength to support the front side of the trough 103A, the support structure can be simplified.

As shown in fig. 22, auxiliary intake ports 214A for auxiliary windmills are formed in the left and right auxiliary windmill support members 214 at positions in the front and rear directions across the auxiliary windmill shaft 153. This can improve the amount of air taken into the sub-wind turbine 122, which tends to be insufficient when the sub-wind turbine support member 214 crosses the sub-wind turbine air inlet 154B, and can satisfactorily perform wind separation by the separation air from the sub-wind turbine 122.

As shown in fig. 21, the wind turbine 121 is disposed such that a forward swing limit position of the front end of the swing sorting mechanism 120 is located in a position (may be a position directly above) in the vicinity of the wind turbine shaft 151. As described above, the forward swing limit position of the front end of the swing sorting mechanism 120 is made to coincide (may substantially coincide) with the front end of the receiving net 116 in the front-rear direction. By setting the forward swing limit position of the tip end of the swing sorting mechanism 120 in this manner and providing the receiving net 116 and the wind turbine 121, a housing space is formed at a position directly above the front half portion of the wind turbine 121, and the sub-wind turbine 122 is provided in this housing space in a state where the tip end of the wind turbine 121 and the tip end of the sub-wind turbine 122 are substantially aligned (may be aligned) in the forward and backward direction.

That is, by configuring such that the forward swing limit position of the front end of the swing sorting mechanism 120, the windmill shaft 21 of the windmill 121, and the front end of the receiving net 116 are aligned on a substantially vertical line (or on a vertical line), it is possible to prevent the swing sorting mechanism 120 from unnecessarily swinging forward of the front end position of the receiving net 116, and to ensure a large storage space above the front half of the windmill 121 and in front of the swing sorting mechanism 120, and to install a larger sub-windmill 122 using this storage space, and as a result, it is possible to ensure more sufficient sorting wind for a large amount of processed objects.

As shown in fig. 21, the wind turbine 121 and the sub-wind turbine 122 are mounted on the lower frame portion 115B of the threshing frame 115 such that their front ends substantially coincide (may coincide) with the front end of the stroking roller 119 mounted inside the upper frame portion 115A of the threshing frame 115 in the front-rear direction. Accordingly, as compared with the case where the wind turbine 121 disposed in the front and lower portion of the swing sorting mechanism 120 is disposed in the vicinity of the rear portion so that the front end thereof is located rearward of the front end of the stripping drum 119, the length of the grain sieve 149 disposed in the lower portion of the swing sorting mechanism 120 in the front-rear direction can be increased, and the processing area (drop-off area) of the grain sieve 149 can be secured to be large, so that the grain collection efficiency in the grain sieve 149 can be improved. Further, the sub-wind turbines 122 can be compactly arranged so as not to protrude forward from the front end of the threshing frame 115, and an increase in size of the threshing and sorting structure in which the sub-wind turbines 122 are arranged can be prevented.

In addition, in the threshing and sorting structure of the threshing device 103, for example, the following structure may be adopted instead of the above-described structure.

The separation wind from the sub-wind turbine 122 is supplied to the swing separation mechanism 120 so that the separation wind from the sub-wind turbine 122 actively passes between the husk scrapers 146A of the husk sieve 146.

The rear end side of the swing sorting mechanism 120 is extended rearward from the rear end of the receiving net 116 so that the rearward swing limit position of the rear end of the swing sorting mechanism 120 coincides or substantially coincides with the rear end of the stripping roller 119 (the rear end of the stripping section 134) in the front-rear direction.

[ other modes of embodiment 2 ]

The stripping roller 119 may be provided in the right-left direction on the traveling vehicle body 101 so as to rotate about a stripping roller shaft 118 in the right-left direction, and may be configured to strip the harvested straw from the harvesting conveyor supplied to one of the right and left ends thereof. In this case, one of the left and right ends on the upstream side in the conveying direction in the stripping process is the front side of the stripping roller 119 (the threshing device 103), and the other of the left and right ends on the downstream side in the conveying direction is the rear side of the stripping roller 119 (the threshing device 103).

As the 2 nd sorting body 150, a document feeder may be adopted in which a plurality of rack plates formed in a zigzag shape are arranged in a left-right direction at set intervals in an aligned manner with their front and rear orientations facing each other.

The power from the engine 172 may be branched into the high-speed transmission system H and the low-speed transmission system L at the left end portion which is the end portion on the downstream side in the transmission direction of the windmill shaft 151, or the power from the engine 172 may be branched into the high-speed transmission system H and the low-speed transmission system L directly in parallel without passing through the idler shaft 182 at the right end portion which is the end portion on the upstream side in the transmission direction of the windmill shaft 151.

The harvesting conveyor system L2 may be coupled in series to the downstream side of the stroking roller transmission system L1 in the transmission direction, and in this case, the stroking roller transmission system L1 may be coupled in a coupled manner to the left end portion which is the downstream side end portion in the transmission direction of the windmill shaft 151, or the stroking roller transmission system L1 may be coupled in a coupled manner directly to the right end portion which is the upstream side end portion in the transmission direction of the windmill shaft 151 without passing through the idler shaft 182.

The [ 5 ] may be configured to interlock with the stripping roller transmission system L1 on the downstream side in the transmission direction of the harvesting conveyor transmission system L2, in which case the harvesting conveyor transmission system L2 may be interlocked with and connected to the left end portion which is the end portion on the downstream side in the transmission direction of the windmill shaft 151, or the harvesting conveyor transmission system L2 may be directly interlocked with and connected to the right end portion which is the end portion on the upstream side in the transmission direction of the windmill shaft 151 without passing through the idler shaft 182.

The drive shaft 188 as the input shaft for the stripping drum and the feeder drive shaft 114 as the input shaft of the harvesting conveyor 102 may be linked to the idler shaft 182 by a single belt drive type transmission mechanism.

The stripping roller 119 may be a drum type having a cylindrical stripping section.

[ 3 rd embodiment ]

An embodiment of the combine harvester according to embodiment 3 will be described below with reference to fig. 28 to 36. In this embodiment, the combine harvester of the present invention is also used in a general type (whole stalk input type) combine harvester.

[ integral Structure ]

As shown in fig. 28 and 29, this general type combine includes a steering section B1 and a pre-harvest treatment section C1 at the front portion of a self-propelled machine body a1 that travels by a pair of left and right crawler travel devices 301, and a threshing section D1 into which grain stalks from the pre-harvest treatment section C1 are input and a grain box E in which grain from a threshing section D1 is stored are provided in the self-propelled machine body a 1.

The grain tank E is supported so as to be switchable between a working posture (posture shown by a solid line in fig. 29) stored in the self-propelled machine body a1 and an inspection posture (posture shown by a phantom line in fig. 29) extending in the lateral direction from the self-propelled machine body a1 by being wound around the vertical axis Y of the longitudinal posture at the rear position of the self-propelled machine body a1, and a discharger F is provided on the rear surface of the grain tank E. As shown in fig. 36, the discharger F is provided so as to be swingable about a swing axis X in a front-rear facing posture, and is configured to be switchable between a storage posture in which the discharge-side end portion faces upward and a discharge posture in which the discharge-side end portion faces outward. Further, a fuel tank 304 is provided at the rear end of the self-propelled body a1 at a position rearward of the grain tank E.

An engine 303 is disposed below an operator seat 302 of the operator's station B1, and a transmission (not shown) for transmitting a driving force from the engine 303 to the right and left crawler traveling devices 301 is provided at a central position of a front portion of the bicycle body a 1. The transmission is provided with a continuously variable transmission for continuously varying the driving force from the engine 303, and is provided with a steering clutch (not shown) for intermittently transmitting the driving force to the right and left crawler traveling devices 301.

The pre-harvest processing section C1 is configured to pick up the front side of the ear implanted with straw by the rotation of the reel 305, cut the roots of the straw by the cutter 306, convey the whole stalks of the harvested straw (harvested straw) in the transverse direction by the transverse feed auger 307, and throw the whole stalks of the harvested straw into the threshing section D1 by the feeder 308. The pre-harvest processing section C1 is connected to be vertically swingable about a horizontal axis (not shown) of the rear end portion, and is provided with an actuator such as a hydraulic cylinder for performing the vertical swing, and is configured to be able to adjust the height of the grain stalks harvested by setting the swing amount by the operation of the actuator.

[ riding driving part ]

The driver's part B1 includes a box-shaped engine cover 311 covering the upper side of the engine 303, and a driver seat 302 is provided on the upper surface of the engine cover 311 so that a driver can sit thereon. An intake box 311A is formed on the outer side of the engine cover 311, and an intake portion 311B, to which a dust screen is stretched for taking in cooling air, is formed on the outer surface side of the intake box 311A. A steering lever 312 for controlling steering of the self-propelled machine body a1 and controlling lifting and lowering of the pre-harvest treatment section C1 is provided on the front side of the driver seat 302, a shift lever 313 for controlling the traveling speed of the self-propelled machine body a1 and a work lever 314 for bringing the pre-harvest treatment section C1 and the threshing treatment section D1 into a driving state and a stopping state are provided on the left side of the driver seat 302. Further, a discharge clutch lever 315 is provided on the front surface side of the upper portion of the intake box 311A.

The steering lever 312 is maintained in a neutral posture in a non-operated state, and is swung in the left-right direction with reference to the neutral posture, whereby a steering clutch incorporated in the transmission is controlled to steer (wind) the vehicle from the traveling body a 1. Further, by operating the steering lever 312 in the front-rear direction, the above-described actuator is controlled to raise and lower the pre-harvest treatment section C1. Further, the shift lever 313 changes the traveling speed by operating the continuously variable transmission in the forward and backward directions. The operation lever 314 is operated in the front-rear direction to open and close the clutch for interrupting the power to the threshing section D1 and to open and close the clutch for interrupting the power to the pre-harvest processing section C1.

As shown in fig. 35, a discharge clutch G for transmitting the driving force from the engine 303 to the discharge system of the grain tank E is provided, and the discharge clutch G is operated in conjunction with the discharge clutch lever 315. With this configuration, the discharge clutch lever 315 is operated to the on position, the discharge clutch G is engaged, the driving force from the motor 303 is transmitted to the bottom screw 321 of the grain tank E, and the discharger F is driven to discharge grains from the grain tank E.

[ Tread-off part ]

The threshing section D1 includes an axial-flow type stripping drum (not shown) that is driven to rotate around the axis of the forward-backward direction posture of the self-propelled machine body a1 to perform stripping of the harvested straw fed into the stripping chamber, and a sorting device (not shown) that sorts grains from the processed material obtained by the stripping process of the stripping drum. The winnowing device 309 supplies the grains sorted in the sorting device to the grain tank E, and drops and discharges straw chips and the like other than the grains from the sorting device to the rear of the self-propelled machine body a 1.

[ grain tank and discharger ]

As shown in fig. 30 to 36, the grain tank E includes a bottom screw 321 that feeds grains stored in the tank main body 320 rearward at the bottom of the tank main body 320. Since the bottom wall 320B of the box main body 320 is formed as an inclined surface so that the accumulated grains flow downward to the outside of the self-propelled body a1, the bottom screw 321 is disposed at a position offset to the outside of the self-propelled body a 1. As shown in fig. 35, a front end of a screw shaft 321A of the bottom screw 321 is projected forward from the front wall 320f of the box main body 320, and a horizontally oriented intermediate shaft 323 connected to the projected portion via a bevel gear 322 is provided at a lower portion of the front wall 320f of the box main body 320.

The discharge clutch G is of a belt tension type for transmitting the driving force from the engine 303 to the intermediate shaft 323, and the discharge clutch lever 315 is configured to interrupt the power by adjusting the tension of the belt of the clutch mechanism.

The axis of the screw shaft 321A of the bottom screw 321 coincides with the swing axis X, and the rear wall 320r of the box main body 320 is provided with a trap unit 330 for conveying grains sent from the bottom screw 321 to the discharger F. As shown in fig. 30 and 32, the trap unit 330 has a tubular base end portion 331 in a lateral posture and a tubular extension portion 332 connected to the base end portion in a perpendicular posture, and the base end portion 331 has a fixed cylinder 331A connected to the grain tank, a rotary cylinder 331B arranged coaxially with the swing axis X with respect to the fixed cylinder 331A, and a joint mechanism 331C connecting the fixed cylinder 331A and the rotary cylinder 331B to each other so as to be rotatable.

The joint mechanism 331C has a structure in which the fixed cylinder 331A and the rotary cylinder 331B are coupled to each other so as to be swingable about the swing axis X, and includes a plurality of holding bodies 333 that hold the rotary cylinder 331B in a loose-proof state, and a sleeve, a collar, or the like that allows relative rotation between the holding bodies 333 and the rotary cylinder 331B. The holding body 333 is supported by a support plate 362 that rotates integrally with the grain tank E. Although not shown in the drawings, an opening for discharging dust inside is formed in the base end 331, and a cover body for closing the opening is detachably provided, and the opening is opened to enable discharging of dust inside and inspection of the inside.

The discharger F includes a discharge tube 341 and a discharge screw 342 disposed inside the discharge tube 341, and includes a discharge guide 343 for guiding grains in a direction perpendicular to the longitudinal direction of the discharge tube 341 at a discharge-side end. The base end side of the discharge screw 342 is configured as a double helix in which two helices are formed with respect to the screw shaft 342A, and grains can be reliably conveyed by the base end side. The screw shaft 342A is rotatably supported about the rotation axis Z, and a lamp 345 for illuminating the grain discharge direction is provided at the upper end of the discharge tube 341.

A part of the screw shaft 321A of the bottom screw 321 is inserted into the base end 331 of the elbow unit 330, and a part of the discharge screw 342 is inserted into the extension 332 of the elbow unit 330. A rotating plate 321B for scooping up grains is provided on the screw shaft 321A at the transport end position of the bottom screw 321, and a bevel gear mechanism 344 having a pair of bevel gears 344G that rotate around mutually orthogonal axes to transmit the driving force of the screw shaft 321A to the screw shaft 342A of the discharge screw 342 is provided inside the pipe bending unit 330.

According to such a transmission structure, the driving force of the bottom screw 321 can be transmitted to the discharge screw 342 via the bevel gear mechanism 344 of the elbow unit 330, and grains in the grain bin E can be transported from the bottom screw 321 to the discharge screw 342 and discharged from the discharge end of the discharger F.

In the discharger F, the rotation direction of the bottom screw 321 is set to the left-turn direction (counterclockwise direction) when the grain bin E is viewed from the rear, and when grains are discharged from the discharger F, a torque is applied to the discharge tube 341 of the discharger F to orient the discharger F to the storage posture (see fig. 36). Thus, when discharging grains, the grain discharger always applies a force in a direction of lifting the discharge-side end of the discharger F. Further, the rotation direction can be set to the opposite direction by changing the shape of the bottom screw 321, and when the rotation direction is set in this way, the discharger F is urged in a direction to lower the discharge-side end of the discharger F when the grains are discharged.

A pillar-shaped member 325 having a vertical axis Y coaxial with the axis is coupled and fixed to a rear wall 320r of the box body 320 of the grain box E by a bracket 326. The pillar-shaped member 325 is formed in a cylindrical shape, and an intermediate body 360 is connected to a lower end portion thereof. A support member 361 is connected to the lower surface of the intermediate body 360 in a cylindrical shape so as to be smaller in diameter than the pillar-shaped member 325 coaxially with the vertical axis Y, and the lower end of the support member 361 is rotatably supported by a bearing body 351 provided in a bracket 350A connected to the machine body frame 350.

The holding member 333 is provided for one of the pair of support plates 362, and the pair of support plates 362 is provided so as to be connected to the support member 361, the intermediate body 360, and the base end 331 of the elbow unit 330 in a state where the support member 361 is sandwiched from the front and rear positions. Thus, the grain tank E is supported so as to be freely wound around the vertical axis Y, and during the winding, the grain tank E, the discharger F, the pipe bending unit 330, the pillar-shaped member 325, the intermediate body 360, the support member 361, and the support plate 362 are integrally wound.

The body frame 350 includes a vertical frame 352 in a vertical posture parallel to the vertical axis Y at a position adjacent to the pillar-shaped member 325, and the vertical frame 352 includes the rotation support 353. The rotation support 353 is formed in an annular shape, and rotatably embraces the outer peripheral surface of the pillar-shaped member 325. Since the support member 361 has a smaller diameter than the pillar-shaped member 325, the proximal end portion 331 of the elbow unit 330 is disposed close to the support member 361, and the pillar-shaped member 325 and the proximal end portion 331 are partially overlapped in a positional relationship in a plan view, whereby the pillar-shaped member 325 and the elbow unit 330 are disposed close to each other (see fig. 33).

As shown in fig. 33, the pillar-shaped member 325 is provided with a holding plate 327 projecting rearward in a horizontal posture in a connected and fixed state, and a semicircular recess 327A into which the discharge cylinder 341 of the discharger F is fitted is formed in the holding plate 327. An arc-shaped fixing plate 328 that receives the outer surface of the discharge tube 341 is provided on the upper surface of the holding plate 327, and locking portions 328A having a concave shape are formed by bending at both ends of the fixing plate 328. Further, a posture maintaining mechanism H1 for maintaining the swing posture of the discharger F is provided between the holding plate 327 and the discharge cylinder 341 of the discharger F.

In this combine, a longitudinal axis Y is disposed at a position close to the rear wall 320r of the grain tank E, a swing axis X is disposed on the outer side in the lateral width direction of the self-propelled body a1 with reference to the longitudinal axis Y, and a rotation axis Z of the discharger F is set at a position rearward of the longitudinal axis Y.

In this way, since the swing axis X is disposed outside the self-propelled body a1 with respect to the longitudinal axis Y and the bottom screw 321 is disposed outside the self-propelled body a1, the tripper F is disposed outside the self-propelled body a1 as a whole, and the distance between the discharge position and the body is increased when the discharge-side end of the tripper F is swung outside.

As shown in fig. 31, in a state where the grain tank E is in the working posture and the tripper F is in the storage posture, the pillar-shaped member 325 and the discharge tube 341 of the tripper F are arranged at positions where parts overlap in the rear view. Thus, the pillar-shaped member 325 and the ejector F can be disposed in a small space by being brought close to each other in the lateral width direction of the self-propelled body a 1.

As shown in fig. 31, 33, and 36, the posture maintaining mechanism H1 includes a support 355, an engaging plate 356, and a coupling rod 357, the support 355 being attached to the upper surface of the holding plate 327, the engaging plate 356 being attached to the outer wall surface of the discharge cylinder 341, the coupling rod 357 having a plurality of engaging portions 356A along the longitudinal direction of the ejector F, and the coupling rod 357 having one end supported by the support 355 and the other end capable of selectively engaging with any one of the plurality of engaging portions 356A of the engaging plate 356. In the posture maintaining mechanism H1, since the holding plate 327 is connected to the pillar-shaped member 325, even if the grain tank E is wound around the vertical axis Y, the relative positional relationship between the support 355, the engaging plate 356, and the connecting rod 357 can be maintained, and the posture of the discharger F can be stably maintained.

Of the plurality of engaging portions 356A, the engaging portion located closer to the discharge-side end is formed as a simple through hole, and the plurality of engaging portions located closer to the swing axis X are formed so as to be connected to each other by a slit 356B oriented along the longitudinal direction of the discharge tube 341. The coupling rod 357 has a shape in which the base end shaft portion 357A and the distal end shaft portion 357B are bent in a posture orthogonal to the longitudinal direction, and the base end shaft portion 357A is inserted into the through hole of the support 355 and supported in a non-loose state, and a washer or a pin is detachably provided on the distal end shaft portion 357B.

The swing posture of the tripper F about the swing axis X is set by a human operation, and when the tripper F is maintained in the storage posture, the tip shaft portion 357B of the coupling rod 357 is inserted (engaged) into the engaging portion 356A located closer to the discharge-side end portion, and is prevented from being loosened by a washer, a pin, or the like, so that the tripper F can be maintained in the storage posture. In particular, in this storage posture, both end portions of the rubber holding band 358 (see fig. 33) are locked and coupled to the locking portions 328A at both ends of the fixing plate 328, so that the tension of the holding band 358 acts on the discharge tube 341, and the storage posture can be stably maintained.

In a state where the swing posture of the ejector F is set by a human operation, the tip shaft portion 357B of the coupling rod 357 is selected and locked by any one of the plurality of engagement portions 356A of the engagement plate 356, and is prevented from being loosened by a washer, a pin, or the like, so that the swing posture can be maintained. In particular, since the plurality of engaging portions 356A are connected to each other through the slit 356B when the swing posture is maintained, the locking of the ejector F by a washer, a pin, or the like does not need to be removed when the posture is switched, and thus, the operation is not troublesome.

The posture maintaining mechanism H1 is not limited to the use of a rod, and may be configured to include a wire between the support 355 and the engaging plate 356, for example, so that the connection position of the wire with respect to the engaging plate 356 can be changed. In the configuration using the wire as described above, since the wire is flexibly deformed in a linear shape, the degree of freedom in the arrangement of the posture maintaining mechanism H1 is increased, and the arrangement space can be reduced.

As the posture maintaining mechanism H1, for example, a pair of connecting plates connected so as to be bendable by a shaft body or a hinge may be used, and one of the connecting plates may be connected to the support 355 so as to be swingable, and the other of the connecting plates may be connected to the discharge cylinder 341 so as to be swingable. In this configuration, the tripper F assumes the storage posture in the state where the pair of link plates are bent, and assumes the discharge posture in the state where the pair of link plates are extended.

Further, an electric motor, a hydraulic cylinder, or the like may be provided to determine the swing posture of the discharger F. With this configuration, the operator does not need to manually determine the posture of the discharger F, and does not need to have the posture maintaining mechanism H1.

As described above, in the combine harvester of the present embodiment, when discharging the grains in the grain tank E through the discharger F, the bottom screw 321 is driven by the operation of the discharge clutch lever 315 on the side of the operator's seat 302, and the grains in the grain tank E are transported from the trap unit 330 to the discharge tube 341 by the bottom screw 321, and can be discharged to the outside from the discharge tube 341.

The length of the discharger F is limited so as not to protrude largely from the upper surface of the grain tank E in the storage posture. However, since the ejector F is supported swingably about the swing axis X offset to the outside in the width direction of the self-propelled body a1, the discharge-side end portion can be largely separated from the self-propelled body a1 when the discharge posture is set. Further, the discharge direction can be arbitrarily set by setting the swing posture of the discharge cylinder 341, and the swing posture can be maintained by the posture maintaining mechanism H1, so that the discharge direction can be stabilized.

In particular, since the posture maintaining mechanism H1 for maintaining the swinging posture of the tripper F is provided and the posture maintaining mechanism H1 is constituted by the support member 355 connected to the pillar-like member 325 connected to the box main body 320, the engaging plate 356 formed on the outer surface of the discharge cylinder 341 of the tripper F, and the connecting rod 357 provided therebetween, the posture of the tripper F can be maintained regardless of the revolving posture of the grain box E.

The upper part of a pillar-like member 325 disposed coaxially with the longitudinal axis Y is connected and fixed to the grain tank E by a bracket 326, and the middle part of the pillar-like member 325 is rotatably supported by a body frame 350 of the self-propelled body a1 by a rotation support 353. Further, a support member 361 is coupled to the lower side of the pillar-shaped member 325 coaxially with the vertical axis Y, and the lower end portion of the support member 361 is supported by a bracket 350A of a bicycle body a1 so as to be freely rotatable via a bearing body 351. Further, a pair of support plates 362 connected to the support member 361 are connected to the base end portion 331 of the elbow unit 330. Thus, the rotating system (the pillar-shaped member 325 and the support member 361) that rotates integrally with the grain tank E is supported by the self-propelled body a1 so that the middle portion and the lower end portion of the rotating system (the pillar-shaped member 325 and the support member 361) can freely revolve around the vertical axis Y in a state where the rotating system (the pillar-shaped member 325 and the support member 361) is connected to the upper position and the lower position of the grain tank E by a long span.

Since the vertical axis Y is disposed at a position close to the rear wall 320r of the grain tank E, it is possible to suppress the increase in size of the arms supporting the grain tank E, and since the rotation axis Z of the discharge screw 342 is disposed on the rear side of the vertical axis Y, for example, the column-like member 325 is disposed coaxially with the vertical axis Y, but interference between the column-like member 325 and the discharger F can be avoided. In addition, in the state where the grain tank E is in the working posture, the stay-like member 325 and the discharger F in the storage posture are arranged at positions where they partially overlap in the rear view, so that the stay-like member 325 and the discharger F can be arranged in a small space.

Industrial applicability

The configuration of the combine according to the present invention is not limited to the general-type combine as described in the embodiments, and may be applied to a self-threshing type combine configured to perform a threshing process only on the grain-attached portion of the harvested grain. The present invention is not limited to a combine harvester for harvesting grains such as rice and wheat, but may be applied to a combine harvester for harvesting beans such as soybean and vegetables.

Description of the reference numerals

5 cockpit

5A floor surface

6 operation box

7 side panel box

Feeder for 40 conveying

41 reaping part

50 driver's seat

50a seat surface

50d armrest

52a front pillar

52b front column

53 shed part

54 front glass

55 door for taking in and taking off

60 case main body

60a front surface

60b back side

61 steering lever

63 Key switch

70 box main part

70a front edge

70A outer part

70B inside part

71 electric component arrangement part

72 shift lever

74 switch operator

75 front end part

76 attachment site

Space part of S0

S1 open space

S2 concave space

102 reaping and conveying device

103A threshing part

116 carrying net

117 stripping chamber

118 stroking-out roller shaft

119 stroking-off roller

120 swing sorting mechanism

121 windmill

122 auxiliary windmill

129 support member

140 rod-shaped member

141 stripping teeth

151 windmill shaft

152 windmill box

152C air inlet for windmill

153 auxiliary windmill shaft

154 auxiliary wind box

154B air intake for auxiliary windmill

172 motor

182 idler shaft

186 transmission mechanism

186A transmission rotator

186Aa hub part

186Ab outer circumference

186B transmission rotator

186Ba hub part

186Bb outer periphery

188 downstream side of transmission direction

188 downstream side of transmission direction

189 bevel gear type transmission mechanism

189A reverse rotation bevel gear for taking out power

190A transmission rotator

201 counter-rotating transmission mechanism

204 cover

205 cover

209 leakage prevention mechanism

211 front side pillar member

212 rear side pillar member

213 windmill support

214 auxiliary windmill support member

Auxiliary air inlet for 214A auxiliary wind turbine

B drive mechanism

L1 stroking-out roller transmission system

L2 reaping and conveying transmission system

321 bottom screw rod

325 post-like component

330 bent pipe unit

331C joint mechanism

342 discharge screw

344 bevel gear mechanism

355 support

356 engaging plate

356A engaging part

357 linking rod

A1 self-propelled body

E grain tank

F discharger

H1 posture maintaining mechanism

X-swing axle center

Y-shaped longitudinal axis

And Z is a rotating axis.

Claims (20)

1. A combine harvester is characterized in that,

a driver seat is arranged in a driver cabin;

a front glass is provided between a pair of left and right front pillars of the cabin over a range from a ceiling portion to a floor surface of the cabin;

a harvesting part is arranged in front of the cockpit, a threshing device is arranged behind the cockpit,

in the cab, a steering operation part is arranged on one side of the cab in the left-right direction,

in the cabin, a gear shift operation part is arranged on the other side of the cabin in the left-right direction,

a space is formed between the front glass and the driver seat so that there is no obstacle obstructing the view of the driver seated in the driver seat,

a foot placement portion is provided between the front glass and the driver seat in the cab between the floor surface and at a position directly in front of a left and right center portion of the driver seat in a plan view of the body,

the foot placing part is configured in such a way that the length of the foot placing part in the left-right direction of the machine body is larger than the length of the foot placing part in the front-back direction of the machine body when the machine body is overlooked,

the leg part is inclined in a manner that the front side is higher and the rear side is lower relative to the floor surface when the machine body is seen from side,

a front lower space is formed on a lateral side of the footrest section on the side of the shift operation section, and a driver sitting on the driver seat can look through the front lower space to look down in front of a side portion of the cab,

a width of the harvesting part in the left-right direction is larger than that of the cockpit, a feeder for delivering the processed object harvested by the harvesting part to the threshing device is arranged behind the harvesting part and at a position laterally adjacent to the other side of the cockpit,

the shift operation portion has a case main portion that supports a shift lever and stands upright so as to extend forward of a front end of the driver seat in a side view of the body,

a delivery location observation space continuous with the front lower space is formed in front of the box main portion so that no obstacle obstructs a view to a delivery location where the processed object is delivered from the harvesting portion to the feeder.

2. A combine harvester according to claim 1,

the width of the front glass is configured to be larger than the width of the seat surface of the driver seat,

the width of the footrest section in the left-right direction of the body is set to be approximately the same as the width of the seat face of the driver seat in the left-right direction,

a 2 nd lower front space is formed on a lateral side of the footrest section on the steering operation section side, and a lower front portion of the side section on the steering operation section side of the cab can be observed through the 2 nd lower front space.

3. A combine harvester according to claim 1,

the width of the front glass is configured to be larger than the width of the seat surface of the driver seat,

the width of the footrest section in the left-right direction of the body is set to be equal to or less than the width of the seat surface of the driver's seat in the left-right direction,

a 2 nd lower front space is formed on a lateral side of the footrest section on the steering operation section side, and a lower front portion of the side section on the steering operation section side of the cab can be observed through the 2 nd lower front space.

4. A combine harvester according to any one of the claims 1-3,

the footrest section is provided at a distance from the front glass in front of the driver seat in the front-rear direction of the body,

a front space capable of looking out the front and lower sides of the left and right center portions of the cockpit is formed in front of the footrest between the footrest and the front glass.

5. A combine harvester according to any one of the claims 1-3,

a parking brake pedal is arranged on the floor surface,

the parking brake pedal is located at a position laterally adjacent to the footrest section when the body is viewed from the front, and is located at the rear side of the footrest section when the body is viewed from the side.

6. A combine harvester according to claim 4,

a parking brake pedal is arranged on the floor surface,

the parking brake pedal is located at a position laterally adjacent to the footrest section when the body is viewed from the front, and is located at the rear side of the footrest section when the body is viewed from the side.

7. A combine harvester according to any one of the claims 1-3,

in the cabin, the box main portion is disposed laterally adjacent to the driver seat in a plan view of the body.

8. A combine harvester according to claim 7,

in the cab, the steering lever of the steering operation portion is disposed at a position shifted to the one side from the one side end portion of the left and right end portions of the driver seat, and the shift lever is disposed at a position shifted to the other side from the other side end portion of the left and right end portions of the driver seat.

9. A combine harvester according to any one of the claims 1-3,

the steering operation portion is supported by the one of the pair of left and right front pillars.

10. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement portion provided on the other side in the left-right direction of the cabin;

the front glass extends downward from the electrical component arrangement part;

the space is formed below the electrical component arrangement portion.

11. A combine harvester according to any one of the claims 1-3,

the front glass extends downward than the steering operation part;

the space is formed below the steering operation portion.

12. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement portion provided on the other side in the left-right direction of the cabin;

the front glass extends downward from the electrical component arrangement part and the steering operation part;

the space is formed below the electrical component arrangement portion, between the front glass and the driver seat, and below the steering operation portion;

the space is continuous in the left-right direction along the front glass.

13. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement portion provided on the other side in the left-right direction of the cabin;

the space is formed between the electrical component arrangement portion and the steering operation portion.

14. A combine harvester according to any one of the claims 1-3,

the steering operation portion is disposed at a position higher than the driver seat.

15. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement portion provided on the other side in the left-right direction of the cabin;

the electric component arrangement part is arranged at a position lower than the steering operation part.

16. A combine harvester according to any one of the claims 1-3,

the shift operation portion is disposed at a position lower than the steering operation portion.

17. A combine harvester according to any one of the claims 1-3,

the shift operation portion is located on the rear side of the steering operation portion.

18. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement part is arranged in front of the gear shift operation part;

the front glass extends downward from the electrical component arrangement part;

the space is formed below the electrical component arrangement portion.

19. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement part is arranged in front of the gear shift operation part;

the front glass extends downward from the electrical component arrangement part and the steering operation part;

the space is formed below the electrical component arrangement portion, between the front glass and the driver seat, and below the steering operation portion;

the space is continuous in the left-right direction along the front glass.

20. A combine harvester according to any one of the claims 1-3,

an electrical component arrangement part is arranged in front of the gear shift operation part;

the space is formed between the electrical component arrangement portion and the steering operation portion.

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