CN111988984A - Combine harvester and harvester - Google Patents

Abstract

In the structure that the threshing device and the storage part of the grains are arranged in parallel along the left-right direction, the combine harvester which can easily carry out the inspection and maintenance of the receiving net of the threshing device from the side close to the storage part is formed. The threshing device (7) and the grain bagging part are arranged on the machine body in parallel along the left-right direction, and the threshing device (7) is composed of a threshing body (34) which is driven to rotate in the threshing chamber, a receiving net below the threshing body (34), and a sorting part below the receiving net. The threshing body (34) is configured by integrally forming a digging part (42) for digging in and sending the reaped objects to the back and a threshing processing part (43) for threshing the reaped objects, forming an inspection opening (W) at the position opposite to the bagging part at the outer side part of the threshing processing part on the side wall of the threshing chamber, and being provided with a cover body (Wa) for closing the inspection opening (W) in a detachable way.

Description

Combine harvester and harvester

Technical Field

The present invention relates to a combine harvester in which a part of a threshing chamber of a threshing device is openably configured.

The present invention relates to a harvester, and more particularly, to a harvester in which a threshing device is provided in a state of being offset to one side in the left-right direction.

Background

[ background art 1]

As a combine harvester having the above-described configuration, patent document 1 describes a technology in which a grain sieve and a grain pan can be alternately put in and out of a side wall of a threshing device, and an inspection opening that can be opened and closed by a cover is provided in the side wall.

Patent document 2 describes a technique in which a top plate of a threshing device is openably and closably provided via a hinge, and an upper portion of a threshing chamber can be largely opened by opening the top plate.

[ background art 2]

In the above-described harvester, the threshing device is provided in a state of being deviated to one side in the left-right direction, a lateral side portion of a left-right direction outer side of the threshing device is located at a position facing an outer side in a lateral width direction of the machine body, and the lateral side portion of the left-right direction outer side of the threshing device is covered with the side cover. In a conventional combine harvester, which is an example of a harvester, the side cover is formed by a plurality of divided covers, and the covers are provided in such a shape that the outer surfaces in the left-right direction are smoothly connected in the front-rear direction. Each of the covers is configured to be held in position by an elastically engaging lock mechanism that automatically engages with an engaged member provided on the threshing device main body side as the cover moves to the closed position (see, for example, patent document 3). In this structure, the side cover is a structure in which the outer surfaces in the left-right direction are smoothly connected in the front-rear direction, so that even if the standing unharvested crop contacts the side cover along with the harvesting operation, the unharvested crop is less likely to be caught and damaged.

Patent document 1, Japanese patent application laid-open No. H08-103149.

Patent document 2, Japanese patent laid-open No. 2015-42188.

Patent document 3, Japanese patent laid-open publication No. 2017-212949.

[ problem 1]

The problem with respect to [ background art 1] is as follows.

The opening formed in patent document 1 is formed in the side wall of the threshing device so as to individually take out the grain sieve and the grain pan of the swing sorting box inside the threshing device. That is, the threshing device is configured to remove the straw chips easily by removing the cover and taking out the grain sieve and the grain tray in sequence through the opening.

In patent document 2, one of the top plates of the threshing chamber of the threshing device in the left-right direction is supported by a hinge so as to be openable and closable, the other of the top plates in the left-right direction is fixed by a bolt, and the top plate can be opened by removing the bolt.

As described in patent documents 1 and 2, in a threshing device having a threshing body and a receiving net (concave surface in patent document 1) below the threshing body, a part of a processed object may enter the receiving net during threshing and be clogged, thereby reducing the processing capacity.

Such clogging often occurs in a situation where the treated material contains a large amount of water, and a prompt response is required. In response to such a problem, the opening described in patent document 1 is located at a position away from the receiving net, and therefore, it is difficult to perform an operation for removing the clogging. In the structure described in patent document 2, although the top plate can be opened, even if the top plate is opened, the degranulation members are disposed above the receiving net, and therefore, it is difficult to eliminate clogging.

Further, as described in patent document 1, the threshing device and the grain tank are arranged side by side in the right-and-left direction, and an opening is formed on the outer side of the threshing device (the outer surface on the opposite side of the grain tank), so that it is difficult to remove the clogging of the side of the receiving net adjacent to the grain tank, and there is room for improvement in this regard.

For this reason, the following combine harvesters are required: even in a device in which the threshing device and the storage part of the grains are arranged in parallel in the left-right direction, the inspection and maintenance of the receiving net of the threshing device can be easily performed from the side close to the storage part.

[ problem 2]

The problem with respect to [ background art 2] is as follows.

In the above-described conventional structure, the surfaces on the outer sides in the left-right direction are smoothly connected in the front-rear direction and are held in the position holding state without protruding outward, so that it is necessary to provide a lock mechanism having a complicated structure for the plurality of covers, and there is a disadvantage that the support structure is complicated and the cost is high.

Therefore, it is desirable to simplify the support structure of the side cover and reduce the cost while avoiding damage due to the non-harvested crop being caught at the outer portion of the side cover.

Disclosure of Invention

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

The combine harvester of the invention is characterized in that the combine harvester is provided with a threshing device and a storage part, the threshing device is used for threshing the reaped objects supplied from the reaping part and sorting the grains, the storage part is arranged with the threshing device in a state of being parallel to the left and right direction of the machine body, the grains obtained by the threshing device are stored, the threshing device is provided with a threshing body which is driven and rotated by taking a driving shaft center as a center, a receiving net which is arranged below the threshing body and enables the treated objects separated from the reaped objects to leak down, and a sorting part which is used for taking out the grains from the treated objects leaking down from the receiving net, the threshing body is provided with a digging part which is arranged at the front end part of the threshing body and enables the supplied reaped objects to be pulled back, a threshing processing part which is arranged at the back part of the digging part and is used for threshing the reaped objects, the threshing processing part is arranged at the side wall of the storage part side of the threshing device and is opposite to the threshing processing part, an inspection opening is formed, and a lid body capable of opening and closing the inspection opening is provided.

It is considered that the clogging of the receiving net occurs when the harvested material containing a large amount of water is pressed against the receiving net by a strong force accompanying the rotation of the threshing body in the threshing chamber, and a part of the processed material is pushed into the holes of the receiving net. In addition, in a configuration in which the threshing body integrally forms a raking-in part that rakes in the harvested material supplied to the threshing chamber and feeds along the driving axis, and a threshing processing part that performs threshing processing of the harvested material raked in by the raking-in part, as shown in patent document 2, since the receiving net is disposed in an area along the threshing processing part, clogging is likely to occur also in the threshing processing part.

In view of such a problem, according to an aspect of the present invention, an opening is formed in a side wall of the threshing device on the storage portion side at a position facing the threshing processing portion, and a cover for closing the opening is detachably provided. Therefore, the side of the receiving net is opened by removing the cover body and opening the opening, and the blockage of the receiving net is easily eliminated.

Therefore, even if the threshing device and the storing part of the grains are arranged in parallel along the left-right direction, the combine harvester which can easily perform the inspection and maintenance of the receiving net of the threshing device from the side close to the storing part is formed.

As another configuration, the threshing device may include a first material collecting unit that collects the first material sorted by the sorting unit, and a lifting mechanism that is provided between the threshing device and the storage unit, conveys the first material from the first material collecting unit upward and supplies the first material to the storage unit, and the inspection opening may include a first inspection opening that is disposed rearward of the lifting mechanism.

In the combine harvester having this configuration, in order to perform threshing in the step of transporting the harvested material to the rear of the machine body in the threshing chamber and discharge the threshed processed material from the threshing chamber, it is important to reduce loss of grains from the receiving net from the viewpoint that the grains separated from the processed material in the transporting step reach the end of the receiving net and are reliably drained from the receiving net. In this case, the first inspection opening is formed as the inspection opening on the rear side of the winnowing mechanism, whereby the clogging of the downstream side in the conveying direction of the processed object in the processing chamber of the receiving net can be easily eliminated, and the grain can be collected by leaking from the receiving net even when the grain is separated from the processed object conveyed in the threshing chamber.

In another configuration, the receiving net may have an arc shape extending from a position below the degranulation body to a position higher than the driving axis on a side of the degranulation body, and the first inspection opening may be formed at a position overlapping the receiving net in a side view of the degranulation body.

Thus, the first inspection opening is opened to expose the side of the receiving net to a large extent, thereby facilitating removal of clogging in a wide area of the receiving net and inspection and maintenance in the threshing chamber.

As another configuration, the first inspection opening may be disposed in a region extending from a central portion to a rear end of the receiving net in a direction along the driving axis.

Thus, the large area in the front-rear direction is largely exposed on the side of the receiving net by opening the first inspection opening, and the blockage of the wide area of the receiving net and the inspection and maintenance in the threshing chamber are easily performed.

As another configuration, the threshing device may include a second collecting unit for collecting a second object, and a reduction conveying unit provided between the threshing device and the storage unit and configured to return the second object from the second collecting unit to the sorting unit, wherein the inspection opening may include a second inspection opening disposed above the discharge unit of the reduction conveying unit.

Thus, the second inspection opening is formed above the discharge portion of the reduction conveyance mechanism, and therefore, the space above the reduction conveyance mechanism is effectively used to form the opening, so that inspection and maintenance of the interior of the threshing chamber are facilitated, and blockage of the receiving net over a wide range is also facilitated to be eliminated.

As another configuration, the threshing device may include a first object collecting unit that collects the first object sorted by the sorting unit, and a lifting mechanism that is provided between the threshing device and the storage unit in a state of being intersected with the reduction conveying mechanism, conveys the first object from the first object collecting unit upward to supply the first object to the storage unit, and the second inspection opening may be disposed further forward than the lifting mechanism.

Thus, inspection and maintenance of the upstream side of the threshing chamber in the conveying direction of the processed object and elimination of clogging of the receiving net in a wide range are performed through the second inspection opening, and inspection and maintenance of the threshing chamber in a region corresponding to the downstream side of the threshing chamber in the conveying direction of the processed object and elimination of clogging of the receiving net are also performed through the first inspection opening.

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

The harvester of the present invention is characterized in that a threshing device for threshing a harvest and a grain storage device for storing grains obtained by threshing are provided in a state of being arranged in a left-right direction, the harvester is provided with a side cover which covers a lateral side portion on an outer side in the left-right direction of the threshing device, the side cover is divided into an upper cover portion positioned on an upper side and a lower cover portion positioned on a lower side, a linear recess which is linearly recessed along the boundary portion is formed in one or both of a lower end portion of the upper cover portion and an upper end portion of the lower cover portion at a boundary portion between the upper cover portion and the lower cover portion, and a fixing member for fixing the side cover to the lateral side portion is housed in the linear recess.

According to the present invention, linear recessed portions are formed in the boundary portion between the upper cover portion and the lower cover portion of the side cover divided into the upper and lower portions, over the front and rear, and the fasteners are accommodated in the linear recessed portions. As a result, even if the fastener, such as a knob bolt or the like, can be easily assembled and disassembled and an inexpensive fastener is used with a simple structure, the fastener does not protrude from the outer surface of the side cover and there is less possibility that the non-harvested crop is caught.

Therefore, damage due to the absence of the crop being caught on the outer portion of the side cover can be avoided, and the support structure of the side cover can be simplified to reduce the cost.

In the present invention, it is preferable that a protruding portion protruding outward in the left-right direction is formed at a front-rear intermediate portion of the recessed side bottom portion of the linear recessed portion, a recessed space is formed inside the protruding portion in the left-right direction, and a power transmission mechanism for transmitting power is provided inside the side cover in the left-right direction so as to enter the recessed space.

According to this configuration, the linear recess has a protrusion portion protruding outward from the recessed bottom portion at a front-rear intermediate portion of the linear recess. Further, the concave space formed inside the protruding portion in the left-right direction is effectively utilized, and the power transmission mechanism is equipped in the entered state.

As a result, the side cover can be brought as close as possible to the inside of the threshing device while avoiding interference between the side cover and the transmission mechanism, thereby achieving compactness of the entire machine body.

In the present invention, it is preferable that the distance between the outer surface of the upper cover section and the outer surface of the lower cover section in the left-right direction from the lateral side section is substantially the same.

According to this configuration, the outer surface of the upper cover portion and the outer surface of the lower cover portion are located at substantially the same position in the left-right direction, and even when an unharvested crop, which is high on the back, is slidably guided by the side covers, for example, it can be guided well in a straight standing posture with the stalk unbent.

In the present invention, it is preferable that the lower cover portion has a curved front lower edge in side view.

According to this configuration, when the standing unharvested crop is in contact with the lower cover portion, the unharvested crop is guided in the rearward direction while sliding on the lower cover portion. In this case, the lower cover portion is formed to have a curved front end edge, so that the sliding guide can be smoothly performed without damaging the unharvested crop.

In the present invention, it is preferable that a recessed portion recessed inward in the left-right direction is formed in a rear lower portion of the lower cover portion.

According to this configuration, even when the unharvested crop is guided by the lower cover portion in a state of being tilted outward in the left-right direction and guided to the rear portion side of the lower cover portion, the unharvested crop is guided inward in the left-right direction along the recessed portion and can return to the standing posture.

In the present invention, it is preferable that the recessed portion is connected to a rear side from a lower end portion of a front end edge of the lower cover portion, and an upper end edge of the recessed portion is arranged to have a width that increases toward the rear side in a state of being raised backward.

According to this configuration, the non-harvested crop can be smoothly guided to slide in the standing posture by the recessed portion in the backward-raised posture.

In the present invention, it is preferable that the grain threshing device further includes a harvesting unit located in a front portion of the machine body, and a feeder for conveying the grain stalks harvested by the harvesting unit to the threshing device, wherein a front portion of the boundary portion is formed in a front-hanging inclined posture in a side view, and a front portion of the upper cover portion covers a lateral side of a conveying terminal end portion of the feeder in a state of extending to a lower side portion of the conveying terminal end portion of the feeder in the side view.

According to this configuration, when the front portion of the upper cover portion is removed, the conveyance terminal end portion of the feeder is opened, and maintenance work can be easily performed.

Drawings

Fig. 1 is a view showing embodiment 1, and is a left side view showing the whole of a combine harvester.

Fig. 2 is a right side view showing the whole of the combine harvester according to embodiment 1.

Fig. 3 is a view showing embodiment 1, and is a plan view showing the whole of the combine harvester.

Fig. 4 is a view showing embodiment 1, and is a vertical sectional side view of the threshing device.

Fig. 5 is a view showing embodiment 1, and is a right side view of the threshing device.

Fig. 6 is a view showing embodiment 1, and is a vertical rear view of the threshing device.

Fig. 7 is a view showing embodiment 1, and is a sectional view taken along line VII-VII in fig. 5.

Fig. 8 is a view showing embodiment 1, and is a sectional view taken along line VIII-VIII in fig. 5.

Fig. 9 is a view showing embodiment 2, and is an overall left side view of the combine harvester.

Fig. 10 is a view showing embodiment 2, which is an overall plan view of the combine harvester.

Fig. 11 is a view showing embodiment 2, and is an overall right side view of the combine harvester.

Fig. 12 is a view showing embodiment 2, and is a side view of a side cover.

Fig. 13 is a view showing embodiment 2, and is a longitudinal front view of a side cover.

Fig. 14 is a view showing embodiment 2, and is a perspective view of the 1 st cover.

Fig. 15 is a view showing embodiment 2, and is a perspective view of the 1 st cover.

Fig. 16 is a view showing embodiment 2, and is a perspective view of the 3 rd cover.

Fig. 17 is a view showing embodiment 2, and is a perspective view of the 3 rd cover.

Fig. 18 is a view showing embodiment 2, and is a perspective view of the 4 th cover.

Fig. 19 is a view showing embodiment 2, and is a perspective view of the 4 th cover body.

Fig. 20 is a view showing embodiment 2, and is a perspective view of the 2 nd cover.

Fig. 21 is a view showing embodiment 2, and is a perspective view of the 2 nd cover.

Fig. 22 is a view showing embodiment 2, and is a perspective view of an upper power transmission unit cover.

Detailed Description

[ embodiment 1]

Hereinafter, embodiment 1 of the present invention will be described with reference to the drawings.

[ basic structure of combine harvester of embodiment 1]

Fig. 1, 2, and 3 show the whole of the combine harvester according to the present embodiment. That is, fig. 1 shows a left side view, fig. 2 shows a right side view, and fig. 3 shows a top view, in which the direction of [ F ] is defined as the front of the traveling body 1, the direction of [ B ] is defined as the rear of the traveling body 1, the direction of [ L ] shown in fig. 3 is defined as the left of the traveling body 1, and the direction of [ R ] is defined as the right of the traveling body 1.

As shown in fig. 1, 2, and 3, a combine harvester is provided with a cab 3 disposed at a front right portion of a traveling machine body 1 that can travel freely through a pair of right and left crawler traveling devices 2, and the cab 3 is provided with a cab seat 4. In the driver section 3, a cabin 5 is provided above the driver seat 4, and an engine 6 is provided below the driver seat 4.

In the traveling machine body 1, the threshing device 7 and the bagging section 8 (an example of a storage section for grains) are provided in a lateral parallel positional relationship. A harvesting part 15 is disposed on the front side of the traveling machine body 1, and a harvesting and conveying device 14 for supplying harvested material from the harvesting part 15 to the threshing device 7 is provided. That is, as shown in fig. 3, the threshing device 7 and the bagging unit 8 are arranged in parallel on the left and right sides, the harvesting and conveying device 14 is disposed on the left side of the cab 3, and the bagging unit 8 is disposed on the rear side of the cab 3.

In this combine harvester, a harvesting unit 15 is connected to the front end of a harvesting and conveying device 14, the base end of the harvesting and conveying device 14 is supported so as to be swingable about a swing axis Y in a lateral posture, and a lift cylinder 16 is disposed between the harvesting and conveying device 14 and a machine frame 1a of a traveling machine body 1. According to this configuration, the harvesting unit 15 and the harvesting conveyance device 14 are integrally swung about the swing axis Y by the telescopic operation of the lift cylinder 16, thereby adjusting the harvesting height of the harvesting unit 15.

When harvesting work is performed by this combine harvester, the harvesting unit 15, the harvesting conveyor 14, and the threshing device 7 are operated in advance, and the traveling machine body 1 is advanced by setting the harvesting unit 15 at an optimum height for harvesting the harvested material. In this harvesting operation, harvested material such as rice, wheat, and soybeans is harvested by the harvesting unit 15 and supplied to the threshing device 7 by the harvesting conveyor 14. In the threshing device 7, grains are collected by processing the supplied harvested material, and the collected grains are stored in the grain tank 18 of the bagging unit 8.

The harvesting conveyance device 14 includes a dust discharge device 17, and the crushed straw and dust generated when the harvested material is conveyed by the harvesting conveyance device 14 are discharged to the side opposite to the driver part 3.

[ Structure of bagging section in embodiment 1]

As shown in fig. 2, the bagging section 8 is formed by three hopper sections 19 arranged in the front-rear direction at the lower part of the grain tank 18, and a discharge tube 19a is provided at the lower end of each hopper section 19. The working deck 12 is supported on the machine body frame 1a below the bag-filling section 8 so as to be freely switched between a use posture in which the working deck is extended outward as shown in fig. 3 and a retracted posture in the longitudinal direction as shown by a two-dot chain line in fig. 2. Further, a sun visor 9 is provided above the bag-filling portion 8.

In the bagging section 8, a grab bar 10 is provided along a side surface of the grain tank 18, and an auxiliary bar 11 for a bagging worker to use as a backrest is provided outside the grab bar. According to this configuration, when performing work via the bagging section 8, the operator stands on the work deck 12 with his back on the auxiliary lever 11, and fits the grain bag to the hopper section 19, thereby making it possible to easily perform work of supplying the grain from the grain tank 18 to the grain bag.

[ Structure of harvesting section in embodiment 1]

As shown in fig. 1, 2, and 3, the harvesting unit 15 includes a harvesting unit frame 20. The harvesting unit frame 20 is composed of a rear wall frame portion 21 connected to the extending end portion of the harvesting and conveying device 14, lateral side wall frame portions 22 extending forward from both lateral end portions of the rear wall frame portion 21, and a deck frame portion 23 extending forward from the lower end portion of the rear wall frame portion 21.

A push-shear type harvesting device 24 is provided at the front of the deck frame portion 23, and an auger 25 is provided above the deck frame portion 23 so as to be rotatable about a driving shaft in a lateral posture.

A rotary table 27 is provided on the front side above the harvesting unit 24. The rotary table 27 is rotatably supported about an axial center in a horizontal posture at a front end side of a table support arm 26 extending forward from the harvesting section frame 20. Further, a divider 28 is provided at the front end of the left and right lateral side frame portions 22.

According to this configuration, during the harvesting operation, the traveling machine body 1 is advanced while each part of the harvesting unit 15 is driven, and thereby the standing grain stalks are divided into the standing grain stalks to be harvested by the grain divider 28 and the standing grain stalks not to be harvested, and the standing grain stalks to be harvested are picked up by the grain divider 28.

The ear side of the cereal stem to be harvested is pulled rearward by the teeth 27a of the rotary turntable 27, and the stem is cut by the harvesting device 24. The reaped cereal stalks (reaped objects) thus reaped are whole stalks extending from the stems to the ear ends, and the reaped cereal stalks are carried in the transverse direction by the auger 25 and collected in a front portion of the reaping conveyor 14. The reaping straw is supplied to the reaping conveyor 14 through an opening (not shown) of the rear wall frame portion 21, and is supplied to the threshing device 7 by the reaping conveyor 14.

[ Structure of the threshing device according to embodiment 1]

As shown in fig. 1 to 4, the threshing device 7 includes a threshing machine body 30. As shown in fig. 4 and 6, the threshing unit 31 is disposed at an upper portion of the threshing machine body 30, the sorting unit 32 is disposed at a lower portion of the threshing machine body 30, and a first conveying mechanism 47 (an example of a first object collecting unit) for collecting and conveying a first object in a lateral direction and a second conveying mechanism 48 (an example of a second object collecting unit) for collecting and conveying a second object in a lateral direction are disposed below the sorting unit 32.

In the threshing device 7, the harvested grain stalks supplied to the threshing chamber 33 are referred to as harvested material, and the harvested material threshed in the threshing chamber 33 is referred to as processed material. The treated product includes grains, crushed straw, etc. The first substance is a treated substance mainly containing grains, and the second substance is a treated substance mostly containing grains that have not been sufficiently separated, crushed stalks, and the like.

The threshing unit 31 accommodates the threshing body 34 in the threshing chamber 33, and a receiving net 39 is provided at the lower part of the threshing body 34. The receiving net 39 has a front end located at a position corresponding to a boundary between the scooping section 42 and the threshing processing section 43, and a rear end located near the rear end of the scooping section 42. The threshing chamber 33 includes a front wall 35 on the front side, a rear wall 36 on the rear side, a left side wall 37a, a right side wall 37b, and a top plate 38 covering the upper portion of the threshing body 30. A supply port 33a for supplying harvested material is formed at a lower position of the front wall 35 of the threshing chamber 33, and a guide floor 44 is disposed below the supply port 33 a. Further, a dust discharge port 33b is provided on the lower side of the rear wall 36 of the threshing chamber 33.

On the inner surface (lower surface) of the top plate 38, a plurality of plate-like dust sending valves 38a are provided at set intervals in the front-rear direction. The plurality of dust sending valves 38a are provided in a tilted posture with respect to the driving axis X in a plan view so as to act on the threshing chamber 33 to move the processed object rotating together with the threshing body 34 to the rear side.

The degranulation body 34 rotates integrally with a rotation support shaft 40 penetrating in the front-rear direction with respect to the front wall 35 and the rear wall 36, at the same axis as the driving axis X in the front-rear orientation. That is, the front end of the rotation support shaft 40 is rotatably supported by the front wall 35 via a bearing, and similarly, the rear end of the rotation support shaft 40 is rotatably supported by the rear wall 36 via a bearing. In the valley portion 31, a driving rotational force is transmitted from the rotational driving mechanism 41 to the distal end portion of the rotational support shaft 40.

In the threshing device 7, as shown in fig. 6, the left side portion of the top plate 38 is supported via a plurality of hinges 38c so as to be swingable about the opening/closing axis center in the forward/backward facing posture, and the right side portion is configured so as to be able to maintain the posture closed by the holding plate 38 d. The left side wall 37a of the threshing device 7 is provided to be swingable outward about an opening/closing support shaft 37 c.

Thus, the top plate 38 is opened by the operation of the pressing plate 38d, so that inspection and maintenance of the threshing chamber 33 can be performed from above, and inspection and maintenance of the inside of the threshing chamber 33 can be performed from the left outside by swinging the left side wall 37a outward. Further, the receiving net 39 may be drawn upward by opening the top plate 38. When the left side wall 37a is swung about the opening/closing support shaft 37c to be opened, it assumes a substantially horizontal posture as shown in fig. 3. The front end of the left side wall 37a configured to be openable and closable corresponds to the front end position of the receiving net 39, and the rear end of the left side wall 37a corresponds to the rear end position of the receiving net 39.

In particular, an inspection opening W is formed in the right side wall 37b, and the inspection opening W is opened, whereby inspection and maintenance of the interior of the threshing chamber 33 can be performed.

As shown in fig. 4, the threshing body 34 is configured by integrally forming a raking part 42 at the front end part and a threshing processing part 43 at the rear position of the raking part 42. The raking part 42 includes a double-helix helical blade 42b on the outer periphery of a tapered base part 42a whose diameter decreases toward the front end of the threshing body 34. As shown in fig. 8, the threshing processing unit 43 is configured such that a plurality of threshing teeth 43b are provided to protrude toward the outer peripheral side of the threshing body 34 at predetermined intervals along the driving axis X, with respect to 6 rod-shaped threshing tooth support members 43a provided at predetermined intervals in the circumferential direction of the threshing body 34.

In the threshing section 31, the harvested material from the harvesting conveyor 14 is supplied to the threshing chamber 33 through the supply port 33 a. The supplied harvested material is raked into the rear of the threshing body 34 along the guide bottom plate 44 by the helical blades 42 of the raking part 42 and is supplied to the threshing processing part 43. In the threshing processing section 43, the harvested material is threshed by the threshing teeth 43b and the receiving net 39 as the threshing body 34 rotates, and as a result, threshing is performed.

In this way, when threshing is performed, the processed object rotates together with the threshing body 34, and the processed object contacts the dust sending valve 38a, is conveyed to the rear part of the threshing chamber 33, and is subjected to threshing processing. The grains obtained by the threshing process and the short crushed stalks or the like fall down to the sorting unit 32 through the receiving net 39, but the processed matter (the grains, the long crushed stalks or the like) that cannot fall down through the receiving net 39 is discharged to the outside of the threshing chamber through the dust discharge port 33 b.

[ Structure of receiving Net of embodiment 1]

As shown in fig. 4 and 6, the receiving net 39 is configured by providing a plurality of arc-shaped vertical frames 39t, and a tubular horizontal frame 39p and a plate-shaped horizontal frame 39y that are fixed in a posture orthogonal to the plurality of vertical frames 39t at predetermined intervals in the circumferential direction of the threshing body 34. With this configuration, a plurality of drop holes are formed between the vertical frame 39t, the tubular horizontal frame 39p, and the plate-like horizontal frame 39 y.

That is, the receiving net 39 is disposed in an arc-shaped region extending from the lower side of the threshing body 34 to a position higher than the driving axis X when viewed in the direction of the driving axis X.

As a specific configuration, a device provided with a plurality of tubular lateral frames 39p and plate-like lateral frames 39y with respect to a plurality of vertical frames 39t is configured as one divided receiving net 39A, and these six divided receiving nets 39A form a combined receiving net 39. The threshing machine body 30 includes a front support member 60, a rear support member 61, and an intermediate support member 62, and these six divided receiving nets 39A are detachably supported.

The rear support member 61 is disposed at a position extending over the left and right side walls 37a and 37b, and has an end portion 61a connected to the corresponding side wall (the left and right side walls 37a and 37b), and a dust discharge port 33b is disposed below the rear support member 61. In this configuration, the six divided receiving nets 39A can be individually taken out from the threshing portion 31.

[ Structure of sorting section in embodiment 1]

As shown in fig. 4, the sorting unit 32 includes a swing sorting device 45 and a winnowing machine 46, and a first conveying mechanism 47 and a second conveying mechanism 48 are disposed below the swing sorting device 45.

The swing sorting device 45 is disposed below the receiving net 39. The swing sorting apparatus 45 includes a sieve box 65 that swings by a swing drive mechanism 49 using an eccentric shaft or the like, and is configured to include an upper grain tray 66, a chaff sieve 67, a straw shaker 68, a lower grain tray 70, and a grain sieve 71 with respect to the sieve box 65.

That is, the chaff sieve 67 is disposed behind the upper grain tray 66 at a position slightly lower than the upper grain tray 66, and the document sorter 68 is disposed behind the chaff sieve 67. The lower grain tray 70 is disposed below the tip of the chaff sieve 67, and the grain sieve 71 is disposed behind the lower grain tray.

The air separator 46 is accommodated in a main body of the air separator having a plurality of rotary blades 46b inside a fan case 46a, and is configured to be rotatable by a drive shaft in a horizontal posture. An upper discharge port 46c for discharging the sort air along the upper surface of the lower grain tray 70 and a rear discharge port 46d for discharging the sort air rearward are formed in the upper portion of the fan case 46 a.

The screen box 65 is provided with an air passage for supplying the sorted air supplied from the upper outlet 46c of the air separator 46 along the lower surface of the upper grain tray 66, and an air passage for supplying the sorted air supplied from the rear outlet 46d of the air separator 46 along the upper surface of the lower grain tray 70. Further, a dust discharge port 50 is formed at a rear end position (right end in fig. 4) of the swing sorting device 45. Discharge hoods 51 are disposed on both sides of the dust discharge port 50.

The first conveying mechanism 47 is configured as a first screw for transversely conveying the first object (grain) guided by the first object guide 75. The second conveying mechanism 48 is a second screw configured to convey the second object guided by the second object guide 76 in the lateral direction.

As shown in fig. 4 and 5, a raising mechanism 52 and a reducing and conveying mechanism 53 are provided laterally outside the threshing body 30 on the side of the bag-loading portion. That is, a screw type delivery mechanism 52 is provided at a position where the first material (grain) laterally conveyed by the first conveying mechanism 47 is delivered to the grain tank 18. A screw type reduction conveyance mechanism 53 for returning the second object, which is conveyed laterally by the second conveyance mechanism 48, to the front part of the swing sorting device 45 is provided. As shown in fig. 5, the lifting mechanism 52 and the reduction conveyance mechanism 53 are disposed so as to intersect with each other in side view.

The recovery conveyance mechanism 53 is provided with a reprocessing box 54 at a proximal end position thereof. The reprocessing tank 54 includes a reprocessing plate that rotates integrally with the screw of the first conveying mechanism 47, and is configured to promote singulation by bringing the reprocessing plate into contact with the second object when the processed object is transferred from the second conveying mechanism 48 to the reduction conveying mechanism 53. Further, a discharge portion for discharging the second object to the front of the swing sorting device 45 is formed at the upper end of the reduction conveyance mechanism 53.

With such a configuration, in the sorting unit 32, the processed object that has leaked from the receiving net 39 is fed to the screen box 65 and is swung by the driving force of the swing driving mechanism 49, and the processed object is conveyed backward, and the sorted processed object is subjected to the sorting air from the air separator 46 at the time of conveyance.

The first object obtained by the sorting process flows down from the first object guide 75 toward the first conveying mechanism 47 and is collected, and is stored in the grain tank 18 of the bagging unit 8 by the lifting mechanism 52. The second object obtained by the sorting process flows down from the second object guide 76 to the second conveying mechanism 48 and is collected, and after the second object is singulated by the reprocessing tank 54, the second object is returned to the front of the swing sorting device 45 by the reducing conveying mechanism 53 to be singulated. Dust such as straw waste, which is the third processed object generated by the sorting process, is fed backward from the rear end of the swing sorting device 45, and is discharged to the outside from the dust discharge port 50.

[ opening for inspection of embodiment 1]

In the harvesting work by the combine harvester, for example, when water droplets are attached to the grain stalks or the grain stalks contain a large amount of moisture, the receiving net 39 of the threshing device 7 is clogged, and the processed material in the receiving net 39 may be improperly leaked.

When the receiving net 39 is clogged in this way, as described above, it is also possible to cancel the clogging by releasing the closed state by the pressing plate 38d, opening the top plate 38 of the threshing device 7 by swinging the hinge 38c, or opening the left side wall 37a by detaching the left side wall.

In particular, when the left side wall 37a is opened, the side of the receiving net 39 can be opened to perform a satisfactory operation, but since it is difficult to eliminate the clogging of the receiving net 39 on the opposite side, the right side wall 37b is formed with an inspection opening W as shown in fig. 5 to 7. The inspection opening W is configured to be opened by removing the cover Wa.

That is, the first inspection opening 81 and the second inspection opening 82 are formed as the inspection opening W at a position of the right side wall 37b corresponding to the outside of the threshing processing section 43 of the threshing body 34 (a position overlapping the threshing processing section 43 in a side view).

The first inspection opening 81 (inspection opening W) is formed on the rear side of the lifting mechanism 52 in a region that overlaps the receiving net 39 in a side view of the right side wall 37b and extends from the center portion of the region where the receiving net 39 is disposed to the rear end in the front-rear direction. The first inspection opening 81 is detachably provided with a main lid 83 (lid Wa). As shown in fig. 7, a plurality of fixing bolts 85 are provided to protrude from the right side wall 37b of the threshing device 7 so as to maintain the state of closing the main lid 83, and the main lid 83 is maintained in the closed state by inserting the fixing bolts 85 into the through holes of the main lid 83 and fastening the bolts by screwing nuts 86 to the fixing bolts 85.

The second inspection opening 82 (inspection opening W) is formed at a position above the discharge portion at the upper end of the reduction conveyance mechanism 53 so as to overlap the receiving net 39 when viewed from the side of the right side wall 37 b. The second inspection opening 82 is provided with a sub-lid 84 (lid Wa) detachably. As shown in fig. 8, a plurality of fixing bolts 85 are provided to protrude from the right side wall 37b of the threshing device 7 so as to maintain the state of closing the sub lid 84, and the sub lid 84 is maintained in the closed state by inserting the fixing bolts 85 into through holes of the sub lid 84 and fastening the same by screwing nuts 86 to the respective fixing bolts 85.

According to such a configuration, for example, when the receiving net 39 is clogged, the main cover 83 is removed to open the first inspection opening 81, and the sub-cover 84 is removed to open the second inspection opening 82, whereby the receiving net 39 is exposed to these openings and clogging can be easily removed.

In particular, in this configuration, although an operation form in which an operator stands on an upper surface of the top plate 38 or the like of the threshing device 7 and inserts tools into the inspection opening W from a space between the threshing device 7 and the bagging portion 8 can be assumed, since the bagging portion 8 is configured such that the lower side of the hopper portion 19 is largely opened as shown in fig. 2, the main lid 83 and the sub lid 84 can be detached from the lower side of the hopper portion 19, and tools can be inserted into the inspection opening 81 and the second inspection opening 82 to perform operations.

[ other modes for carrying out the embodiment 1]

The present invention can be configured as follows in addition to the above-described embodiments (numbers and reference numerals that are common to embodiment 1 are given to those having the same functions as embodiment 1).

(a) The combine harvester having a grain box configured to be rotatable about an axial center of a vertical posture as a center includes an inspection opening W configured according to the present invention as a storage unit. In the combine harvester having this configuration, since the right side wall 37b can be exposed by turning the grain box, the main cover 83 and the sub cover 84 can be easily removed, and the maintenance inspection of the threshing chamber 33 can be easily performed from the first inspection opening 81 and the second inspection opening 82.

(b) For example, the main cover 83 for closing the first inspection opening 81 and the sub-cover 84 for closing the second inspection opening 82 may be supported by the right side wall 37b via wires or the like. With such a configuration, even when the main cover 83 and the sub cover 84 are separated from the right side wall 37b, they can be supported in a suspended state from the right side wall 37b, and handling of the main cover 83 and the sub cover 84 is facilitated.

[ 2 nd embodiment ]

Hereinafter, a case where embodiment 2 of the present invention is applied to a general-type combine harvester as an example of a combine harvester will be described based on the drawings.

[ integral Structure of embodiment 2]

As shown in fig. 9, 10, and 11, a general-type combine harvester includes a steering unit 103 on the right side of the front portion of a traveling machine body 102 including a pair of left and right crawler traveling devices 101, a threshing device 104 for threshing a harvested crop, and a grain storage unit 105 as a grain storage device for storing grains obtained by the threshing process. The grain storage 105 is provided behind the drive unit 103, the grain storage 105 is positioned on the right side of the machine body, and the threshing device 104 is positioned on the left side of the machine body, and the grain storage 105 and the threshing device 104 are placed and supported on the machine body frame 106 so as to be aligned in the transverse width direction of the machine body. An engine 107 is provided below the driver unit 103. The driver section 103 includes a cabin 109 covering an upper side of a driver seat 108.

In this embodiment, when the front-rear direction of the body is defined, the direction is defined along the body in the working state, and when the left-right direction of the body is defined, the left-right direction is defined in the state where the body proceeding direction is observed. That is, the direction indicated by reference numeral (F) in fig. 9 and 10 is the front side of the machine body, and the direction indicated by reference numeral (B) in fig. 9 and 10 is the rear side of the machine body. The direction indicated by reference numeral (L) in fig. 10 is the left side of the body, and the direction indicated by reference numeral (R) in fig. 10 is the right side of the body.

A feeder 110 for carrying the harvested grain stalks backward so as to freely swing up and down around a horizontal axis X' is connected to the front part of the threshing device 104, and a harvesting part 111 having a harvesting width corresponding to the approximate body width is connected to the front end of the feeder 110. The harvesting unit 111 includes a rotary table 112 for pushing the planted straw backward, a push-shear type harvesting blade 113 for cutting the planted straw and harvesting the cut straw, an auger 114 for transversely feeding the harvested straw to the middle of the transverse width direction of the machine body, and the like, and the harvested straw harvested by the harvesting blade 113 is transversely fed by the auger 114 to be supplied to the feeder 110.

[ Transmission structure to the harvesting unit of embodiment 2]

As shown in fig. 9, the power of the engine 107 provided below the driver section 103 is transmitted to the left end of the machine body through the counter shaft 115. The power is transmitted from the pulley 115a provided on the counter shaft 115 to the pulley 117a provided on the rotating shaft 117 of the threshing body via the transmission belt 116 serving as a power transmission mechanism. From the threshing body, a rotation shaft 117 is transmitted to a pulley 119a provided on a harvesting input shaft 119 located on a swing axis X' via a separate belt 118. Further, the rotation is transmitted to a harvesting transmission unit provided on the right side of the harvesting unit 111 via an endless rotating chain 120 and a driven shaft 121 provided in the feeder 110. Although not shown, the harvesting transmission transmits power to the rotary turntable 112, the harvesting blade 113, and the auger 114, respectively.

As shown in fig. 11, the harvester is provided with an upper transmission cover 123 covering the right outer side of the transmission mechanism for transmitting power to the rotating dial 112 of the harvesting transmission part, and a lower transmission cover 124 covering the transmission mechanism for transmitting power to the auger 114 and the harvesting blade 113. The upper transmission cover 123 and the lower transmission cover 124 are each made of a synthetic resin material. The upper transmission cover 123 is fixed by bolting two side portions together in a state where a plurality of portions of the upper edge portion are locked to locking portions, not shown. Similarly, the lower transmission cover 124 is fixed by bolting two portions of the side surface.

As shown in fig. 9 and 22, a recessed portion 125 that is circularly recessed so as to cover the outer peripheral side of the bolt Bo is formed at the bolt attachment portion of the upper transmission unit cover 123. Further, a large recessed portion 160 extending from the front lower portion to the rear end portion is formed on the lower portion of the side surface. That is, an inclined surface 123B is formed obliquely gradually inward in the left-right direction from the vertically flat upper surface 123A of the side surface, and a vertically flat bottom surface 123C is formed below the inclined surface 123B. The large concave portion 160 is formed by the inclined surface 123B and the bottom surface 123C. The concave portion 160 extends from a lower front portion of the side surface in a state of being obliquely raised backward, and then extends to a rear end portion of the side surface in a substantially horizontal direction in a state of being connected thereto. As described above, since the recessed portion 125 is formed at the bolt mounting portion, the head of the bolt Bo is prevented from protruding laterally outward, and there is less possibility that the harvested crop is caught.

As shown in fig. 11, a recessed groove 124a extending in the front-rear direction and having a narrow width in the vertical direction is formed in the center of the side surface of the lower transmission cover 124. The elongated recessed groove 124a is thus formed in the front-rear direction, whereby strength reinforcement is achieved.

[ threshing device according to embodiment 2]

The threshing device 104 includes, although not shown, threshing members and a receiving net inside, and forms a threshing chamber for performing threshing processing of the harvested grain stalks transported from the feeder 110. The lower part of the threshing chamber is provided with a sorting unit for sorting the threshed material that has leaked from the receiving net into grains, second objects such as rice with straw, and straw scraps.

The grains sorted by the sorting processing section are discharged to the outside in the lateral direction of the grain storage section 105 side of the threshing device 104 by a first material collecting screw not shown in the figure. A winnowing device 126 formed of a screw conveyor is provided on the lateral outer side of the side wall of the threshing device 104 on the side of the grain storage part 105. The grains discharged to the lateral outside of the grain storage 105 side of the thresher 104 are transported upward by the winnowing device 126 and stored in the grain storage 105. The second objects obtained by the sorting processing unit are returned to the front portion of the threshing device 104, and the straw waste and the like are discharged from the rear side of the machine body of the threshing device 104 to the outside.

The grain storage unit 105 includes a storage hopper 127, the storage hopper 127 has a storage space for storing grains subjected to the threshing process and is capable of discharging the grains to a lower side of the storage space, and a recovery unit (not shown) for recovering the grains with a recovery bag is provided at a lower portion of the storage hopper 127.

[ side cover of embodiment 2]

A side cover 130 is provided on the left side of the traveling machine body 102 to cover a left side wall portion 104A that is a left lateral side portion of the threshing device 104.

As shown in fig. 9 and 12, the side cover 130 is divided into an upper cover portion 131 located on the upper side and a lower cover portion 132 located on the lower side. The upper cover 131 is divided into a front upper cover 133 (hereinafter referred to as "1 st cover") and a rear upper cover 134 (hereinafter referred to as "2 nd cover"). The 1 st cover 133 is made of a synthetic resin material corresponding to the front portion of the upper cover 131. On the other hand, the 2 nd cover 134 corresponds to the rear part of the upper cover 131 and is made of a sheet metal material.

The lower cover 132 is divided into a front lower cover 135 (hereinafter referred to as a 3 rd cover) and a rear lower cover 136 (hereinafter referred to as a 4 th cover). The 3 rd cover 135 and the 4 th cover 136 are each made of a synthetic resin material.

As shown in fig. 13, the distance between the outer surface of the upper cover portion 131 and the outer surface of the lower cover portion 132 in the left-right direction from the left side wall portion 104A of the threshing device 104 is substantially the same. Therefore, the outer surface of the upper cover portion 131 and the outer surface of the lower cover portion 132 are located at substantially the same position in the left-right direction, and therefore, the outer surface of the side cover 130 is formed with a longitudinal surface smoothly continuous in the up-down direction. This enables the uncut crop to be smoothly guided in the upright position without bending the stem.

A linear recessed portion Q linearly recessed inward in the left-right direction along the boundary portion K is formed in the boundary portion K between the upper cover portion 131 and the lower cover portion 132, over the front and rear portions from the front end portion to the rear end portion.

The front portion of the boundary K between the upper cover portion 131 and the lower cover portion 132, i.e., the boundary K between the 1 st cover portion 133 and the 3 rd cover portion 135, is formed in an inclined posture that is vertically inclined in a side view. The 1 st cover 133 covers the lateral side of the conveyance end portion of the feeder 110 in a state of extending to the lower side portion of the conveyance end portion of the feeder 110 in a side view. The 2 nd cover 134 covers the lateral outside of the threshing chamber of the threshing device 104.

At a boundary portion K between the upper cover portion 131 and the lower cover portion 132, a linear recessed portion Q linearly recessed along the boundary portion K over the front and rear is formed at an upper end portion of the lower cover portion 132. In the linear recessed portion Q, a knob bolt 137 is housed as a fixing member for fixing and attaching the side cover 130 to the left side wall portion 104A of the threshing device 104.

The structures of the covers 133, 134, 135, and 136 will be described below.

[ 1 st cover of embodiment 2]

As shown in fig. 9, 12, 14, and 15, the 1 st cover 133 includes a lateral wall 133A covering the left outer side of the conveyance termination end of the feeder 110, and a front wall 133B extending in a lateral posture in a state of being continuous with the lateral wall 133A to cover the upper front side of the left wall 104A of the threshing device 104. A plurality of reinforcing ribs 133C are provided inside the portion where the lateral wall portion 133A and the front wall portion 133B are connected. In case 1 of cover 133, the lower end edge of lateral wall 133A is formed in an inclined posture in which the front end is positioned lowermost and the rear end is positioned upward.

The first cover 133 includes locking portions 133D at both front and rear inner lower portions, and the locking portions 133D at both front and rear sides are engaged with and supported by a fixed-side locking piece 139 supported by the threshing frame 138 from above. Further, an upper rear portion of the 1 st cover 133 is fixed to a fixing bracket 141 supported by the threshing frame 138 via a knob bolt 140. The knob bolt 140 is removed to release the engagement between the locking portion 133D and the fixed-side locking piece 139, and thus the knob bolt can be easily removed. In addition, it can be easily assembled in the reverse flow. A recessed portion 142 recessed toward the inside of the body is formed at a portion where the knob bolt 140 of the 1 st cover 133 is fitted, and the knob bolt 140 does not protrude largely toward the lateral outside.

[ second cover of embodiment 2]

As shown in fig. 9, 12, 20, and 21, the outer surface of the 2 nd cover 134 is a flat surface extending straight from the upper portion to the lower end in front view. The 2 nd cover 134 is supported by the threshing frame 138 so as to be swingable around the upper front-rear direction axis for maintenance work such as inspection and cleaning of the interior of the threshing chamber. The 2 nd cover 134 is provided with a lock mechanism 143 of a known structure that automatically engages with an engaged member provided on the threshing apparatus main body side as it moves toward the closed position.

The lock mechanism 143 does not protrude outward from the outer side surface of the 2 nd cover 134, and can be unlocked by manual operation from the outside. When the lock is released, the 2 nd cover 134 can be swung open as it is.

[ 3 rd cover of embodiment 2]

As shown in fig. 9 and 12, the 3 rd cover 135 covers a part of the space on the front side of the sorting unit and the front side of the threshing device 104 in the lateral direction. Cover 3 135 is provided to extend along the lower side of cover 1 133 and the lower side of the front portion of cover 2 134. As shown in fig. 16 and 17, the 3 rd cover 135 includes a lateral wall portion 161 covering the left outer side of the front lower portion of the left side wall portion 104A of the threshing device 104, and a front wall portion 162 extending in a lateral posture in a state of being continuous with the lateral wall portion 161 and covering the lower front portion of the left side wall portion 104A of the threshing device 104. A plurality of reinforcements 170 are provided inside the portion where the lateral wall portion 161 and the front wall portion 162 are connected.

The upper end edge of the lateral wall 161 of the 3 rd cover 135 is formed in an inclined posture in which the front end portion is positioned at the lowermost position and is positioned at the upper position toward the rear side. A front linear recessed portion Q1 linearly recessed leftward, rightward, inward along the boundary portion K is formed from the front end portion to the rear end portion of the upper end portion of the lateral wall portion 161 corresponding to the boundary portion K between the upper cover portion 131 and the lower cover portion 132.

As shown in fig. 17, the 3 rd cover 135 includes a locking portion 135D at a rear portion of an inner lower portion, and the locking portion 171 is engaged with a fixed-side locking piece 144 provided on the threshing device 104 side from above and supported. Further, the fixing brackets 145 provided on the threshing device 104 side are fixed to two positions spaced from the upper portion of the 3 rd cover 135 in the front-rear direction by knob bolts 137. Knob bolt 137 is removed to release engagement between locking portion 171 and fixed-side locking piece 144, and thus can be easily removed. In addition, the reverse procedure can also be easily assembled.

The portion to which knob bolt 137 of cover 3 135 is attached is a portion in which linear recessed portion Q1 recessed toward the inside of the machine body is formed. Further, a recessed portion 146 is formed at a portion where the knob bolt 137 is fitted, which is recessed inward in a circular shape in a stepped manner from a bottom surface portion of the linear recessed portion Q1. Thus, the knob bolt 137 does not protrude laterally outward from the outer surface of the 3 rd cover 135.

As shown in fig. 16, a protrusion 147 protruding outward in the left-right direction is formed at a front-rear middle portion of the recessed side bottom portion of the linear recessed portion Q1 formed in the 3 rd cover body 135. A concave space 148 is formed on the left-right direction inner side of the protruding portion 147. A transmission belt 116 for transmitting power from the counter shaft 115 to the reaping input shaft 119 is provided on the inner side in the left-right direction of the 3 rd cover 135 in a state of entering the recessed space 148.

With such a configuration, the 3 rd cover 135 is disposed in a state as close as possible to the threshing device 104, and interference with the belt 116 can be avoided.

The front lower end edge 135E of the 3 rd cover 135 is formed to be curved in a side view. This part is where the standing non-harvested crop first contacts the side cover 130, and the front lower end edge 135E is formed in a curved shape, so that the crop can be smoothly guided without being caught.

[ 4 th cover of embodiment 2]

As shown in fig. 9 and 12, the 4 th cover 136 covers the lateral outer side of the rear portion of the sorting processing section. The 4 th cover 136 is provided to extend along the rear side of the 3 rd cover 135 and the lower side of the rear side of the 2 nd cover 134. As shown in fig. 18 and 19, the 4 th cover 136 includes a lateral wall portion 163 covering the left outer side of the rear lower portion of the left side wall portion 104A of the threshing device 104, and a rear wall portion 164 extending in a lateral posture in a state of being continuous with the lateral wall portion 163 and covering the lower rear portion of the left side wall portion 104A of the threshing device 104. A plurality of reinforcing ribs 172 are provided inside the portion where the lateral wall portion 163 and the rear wall portion 164 are connected.

The upper end edge of the lateral wall 163 of the 4 th cover 136 extends substantially linearly over the front and rear, and is formed in a gentle, rearward-raised inclined posture that is gradually positioned upward toward the rear side. A rear linear recessed portion Q2 linearly recessed leftward, rightward, inward along the boundary portion K is formed from the front end portion to the rear end portion at the upper end portion of the lateral wall portion 163 corresponding to the boundary portion K between the upper cover portion 131 and the lower cover portion 132. Linear recessed portions Q are formed in the front and rear directions by linear recessed portions Q1 on the front side and linear recessed portions Q2 on the rear side.

As shown in fig. 19, the 4 th cover 136 includes locking portions 173 on both front and rear sides of an inner lower portion, and the locking portions 173 are engaged with and supported by a fixed-side locking piece 149 provided on the threshing device 104 side from above. Further, the 4 th cover 136 is fixed to a fixing bracket 150 provided in the threshing frame 138 at two positions spaced apart in the front-rear direction at the upper portion thereof by knob bolts 137. The knob bolt 137 is removed to release the engagement between the locking portion 173 and the fixed-side locking piece 149, and thus the knob bolt can be easily removed. In addition, the reverse procedure can also be easily assembled.

The portion to which knob bolt 137 of cover 4 136 is attached is a portion in which linear recessed portion Q2 recessed toward the inside of the machine body is formed. Further, a circular recessed portion 151 recessed inward in the left-right direction is formed in a stepped manner from the bottom surface of the linear recessed portion Q1 at a portion where the knob bolt 137 is to be attached. Thus, the knob bolt 137 does not protrude laterally outward from the outer surface of the 3 rd cover 135.

As shown in fig. 9, 12, 16, and 18, concave portions 152 that are concave inward in the left-right direction are formed in the 3 rd cover body 135 and the 4 th cover body 136 so as to be continuously connected in the front-rear direction. The recessed portion 152 includes a 1 st recessed portion 152A formed in a lower portion of the rear portion of the 3 rd cover 135 and a 2 nd recessed portion 152B formed in a lower portion of the 4 th cover 136 in a state of being connected thereto.

In the third cover part 135, similarly to the upper power transmission part cover 123, an inclined surface 135B is formed to gradually come inward in the right-left direction in an inclined direction from an upper surface 135A of the horizontal wall part 161 which is flat in the vertical direction, and a bottom surface 135C is formed below the inclined surface 135B and is flat in the vertical direction. A 1 st recessed portion 152A is formed by the inclined surface 135B and the bottom surface 135C.

In addition, the 4 th cover 136 is formed with an inclined surface 136B that gradually extends inward in the left-right direction in an inclined direction from the upper surface 136A of the horizontal wall portion 163 that is flat in the vertical direction, and a bottom surface 36C that is flat in the vertical direction is formed below the inclined surface 136B. A 2 nd recessed portion 152B is formed by the inclined surface 136B and the bottom surface 136C.

The recessed portion 152 is continuous from the lower end portion of the front end edge of the 3 rd cover 135 to the rear end portion of the 4 th cover 136, and is provided to have a width that increases toward the rear side in a state in which the upper end edge is raised rearward. The recessed portion 152 is formed in a raised inclined posture, and can smoothly guide the standing uncut crop to return to the standing posture without difficulty.

[ other modes for carrying out the invention in embodiment 2]

(1) In embodiment 2 described above, linear recessed portion Q is formed at the upper end of lower cover portion 132, but instead of this configuration, linear recessed portion Q may be formed at the lower end of upper cover portion 131, or linear recessed portion Q may be formed at each of the upper end of lower cover portion 132 and the lower end of upper cover portion 131.

(2) In the above-described embodiment 2, the protruding portion 147 is formed in the side cover 130 at the middle portion in the front-rear direction of the linear recessed portion Q, and the belt 116 is provided in the recessed space 148 formed inside the protruding portion 147, but instead of this configuration, the transmission mechanism may be configured to include a transmission chain or a transmission shaft instead of the belt 116, or may be disposed in a state where the transmission mechanism is avoided without forming such a recessed space 148.

(3) In the above-described embodiment 2, the outer side surface of the upper cover portion 131 and the outer side surface of the lower cover portion 132 are configured to have substantially the same distance in the left-right direction from the left side wall portion 104A of the threshing device 104, but instead of this configuration, the outer side surface of the upper cover portion 131 may be configured to have different distances in the left-right direction from the outer side surface of the lower cover portion 132 to the left side wall portion 104A.

(4) In embodiment 2 described above, the recessed portion 152 is formed in the lower cover portion 132, and the recessed portion 152 is formed so as to extend from the lower end portion of the front end edge of the lower cover portion 132 toward the rear side, and is formed so as to have a larger width toward the rear side in a state where the upper end edge is in the raised-back posture.

(5) In embodiment 2 described above, the front portion of the boundary portion K is configured to be in a vertically inclined posture in a side view, but instead of this configuration, the boundary portion K may be configured to linearly extend over the entire region in the front-rear direction.

(6) In the above-described embodiment 2, the front lower end edge of the lower cover portion 132, that is, the front lower end edge 135E of the 3 rd cover portion 135 is formed in a curved shape in side view, but instead of this, the front lower end edge of the lower cover portion 132 may be formed in a linearly extending shape.

Industrial applicability

The present invention can be used in a combine harvester in which threshing sections and storage sections are provided in parallel in the left-right direction on a machine body.

In addition, the present invention can be applied to various harvesters such as a corn harvester in addition to a general-type combine harvester, a self-threshing type combine harvester, and the like.

Description of the reference numerals

[ embodiment 1]

1 marching body (body)

7 threshing device (threshing)

8 bagging part (storage part)

15 reaping part

32 sorting part

33 threshing chamber

34 threshing body

37b side wall (Right side wall)

39 carrying net

42 digging-in part

43 threshing processing part

47 first conveyance mechanism (first article collecting part)

48 second carrying mechanism (second object collecting part)

52 lifting mechanism

53 reduction mechanism

81 first inspection opening

82 second inspection opening

Opening for W inspection

Wa cover body

X drive axle center

[ 2 nd embodiment ]

104 threshing device

105 grain storage device

110 feeder

111 reaping part

117 transmission belt (driving mechanism)

130 side cover

131 upper cover part

132 lower cover part

147 projection

148 concave space

152 recessed portion

K boundary part

Q, Q1, Q2 linear recesses.

Claims (13)

1. A combine harvester is characterized in that,

comprises a threshing device and a storage part,

the threshing device is used for threshing the reaped material supplied from the reaping part and sorting the grains,

the storage part is arranged in parallel with the threshing device along the left and right direction of the machine body, and stores the grains obtained by the threshing device,

the threshing device is provided with a threshing body which is driven to rotate by taking a driving shaft center as a center, a receiving net which enables the processed object separated from the reaped object to leak below the threshing body, a sorting part which takes out grains from the processed object leaking from the receiving net,

the threshing body is provided with a digging part which is arranged at the front end part of the threshing body and used for digging in the supplied reaped objects to the rear, a threshing processing part which is arranged at the rear of the digging part and used for threshing the reaped objects,

an inspection opening is formed in a side wall of the threshing device on the storage portion side at a position facing the threshing processing portion, and a lid body capable of opening and closing the inspection opening is provided.

2. A combine harvester according to claim 1,

the threshing device is provided with a first material collecting part for collecting the first material sorted by the sorting part,

a lifting mechanism vertically provided between the threshing device and the storage part for conveying the first material from the first material collecting part upward and supplying the first material to the storage part,

the inspection opening includes a first inspection opening disposed on the rear side of the lifting mechanism.

3. A combine harvester according to claim 2,

the receiving net is formed in an arc shape extending from a position below the degranulation body to a position higher than the driving axis on the side of the degranulation body,

the first inspection opening is formed at a position overlapping the receiving net in a side view of the degranulation body.

4. A combine harvester according to claim 2 or 3,

the first inspection opening is disposed in a region extending from a central portion to a rear end of the receiving net in a direction along the driving axis.

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

the threshing device is provided with a second object collecting part for collecting a second object,

a reduction conveying mechanism vertically arranged between the threshing device and the storage part and returning the second object from the second object collecting part to the sorting part,

the inspection opening includes a second inspection opening disposed above the discharge portion of the reduction conveyance mechanism.

6. A combine harvester according to claim 5,

the threshing device comprises a first material collecting part for collecting the first material sorted by the sorting part,

a lifting mechanism provided between the threshing device and the storage unit in a state of intersecting the reduction conveyance mechanism, for conveying the first object from the first object collection unit upward and supplying the first object to the storage unit,

the second inspection opening is disposed on the front side of the lifting mechanism.

7. A harvester is characterized in that a harvester is provided,

a threshing device for threshing the reaped material and a grain storage device for storing the grains obtained by the threshing are arranged along the left and right direction,

a side cover covering the lateral part of the threshing device on the outer side in the left-right direction,

the side cover is divided into an upper cover part positioned at the upper side and a lower cover part positioned at the lower side, and a linear concave part linearly concaved along the boundary part is formed at the boundary part between the upper cover part and the lower cover part, at one or both of the lower end part of the upper cover part and the upper end part of the lower cover part,

the linear recess accommodates a fastener for attaching and fixing the side cover to the lateral side portion.

8. A harvester as in claim 7,

a protrusion protruding outward in the left-right direction is formed at a front-rear middle portion of the recessed side bottom portion of the linear recess,

a concave space is formed inside the left and right direction of the protruding part,

a power transmission mechanism is provided on the inner side of the side cover in the left-right direction in a state of entering the recessed space.

9. A harvester as in claim 7 or 8,

the distance between the outer side surface of the upper cover section and the outer side surface of the lower cover section in the lateral direction of the lateral section is substantially the same.

10. A harvester according to any one of claims 7 to 9,

the lower cover portion has a curved front lower edge in side view.

11. A harvester according to any one of claims 7 to 10,

a concave part which is concave inwards in the left-right direction is formed at the lower part of the rear part of the lower cover part.

12. A harvester as in claim 11,

the recessed portion is connected to the rear side from a lower end portion of a front end edge of the lower cover portion, and an upper end edge is set to be wider toward the rear side in a state of being in a rearward-raised posture.

13. A harvester according to any one of claims 7 to 12,

comprises a harvesting part positioned at the front part of the machine body, a feeder for conveying the grain stems harvested by the harvesting part to the threshing device,

the front part of the boundary part is formed into a front-hanging inclined posture when viewed from side,

the front part of the upper cover part covers the lateral side of the conveying terminal part of the feeder in a state of extending to the lower part of the conveying terminal part of the feeder in side view.

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