CN111918546B - Harvester and working machine - Google Patents

Abstract

The invention provides a harvester which restrains the contact of grass scraps, hands and feet of a driver and an exhaust pipe. The harvester is provided with: a harvesting part which is arranged at the front part of the machine body and harvests crops in a field; a feeder arranged on one side of the machine body and used for conveying the crops harvested by the harvesting part; a driver part (3) provided on the other side of the body; an exhaust gas treatment device (13) which is provided below the driver section (3) and treats exhaust gas of the engine (5); and an exhaust pipe (A) that discharges exhaust gas from the exhaust gas treatment device (13). The exhaust pipe (A) extends from the exhaust gas treatment device (13) in the direction of the feeder, then bends backward, and extends backward between the feeder and the driver part (3). A curved cover (30) for covering a first exhaust pipe section (17) which is a section of an exhaust pipe (A) that curves rearward from above is provided in the harvester.

Description

Harvester and working machine

Technical Field

The present invention relates to a harvester and a working machine.

Background

(1) Conventionally, there is a harvester provided with an exhaust pipe for discharging exhaust gas from an exhaust gas treatment device.

For example, patent document 1 describes a combine harvester in which an exhaust gas treatment device for purifying exhaust gas from an engine is provided in a state of being located on the rear side of a machine body of a driving portion, an exhaust pipe for discharging the exhaust gas from the exhaust gas treatment device to the outside is provided between a threshing device and a grain box so as to extend in a tilted posture of tilting backward, and the exhaust pipe is arranged to discharge the exhaust gas to the upper side of the threshing device.

(2) Further, for example, patent document 2 describes a combine harvester including: working devices such as a harvesting unit, a threshing device, and an unloader; a clutch for turning on and off the power transmission to each working device; and a power clutch unit. The power clutch unit includes a cam mechanism and an electric clutch motor. By the operation of the power clutch unit, each clutch is operated on and off.

(3) Further, there has been conventionally known a harvester in which an engine is provided below a cab.

A combine harvester as an example of a harvester is provided with an engine hood that covers the periphery of an engine to form an engine room 9, and a top plate portion on the upper side of the engine hood supports a driver seat. Further, a plurality of vertical frame bodies such as vertical pillars for supporting strainers disposed at a high position above and vertical pillars for supporting rear ends of side panel portions located on the lateral sides of the driver seat are provided behind the driver seat. Further, conventionally, the following structure is adopted (for example, see patent document 3): the top plate support frame that supports the top plate portion extends in the left-right direction, both left and right side end portions are supported, the lower end portions of the plurality of vertical frame bodies are connected and fixed to the machine frame, and the upper portion side is connected to a member to be supported (a strainer, a side panel portion, and the like).

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2016-

Patent document 2: japanese patent laid-open publication No. 2018-121615

Patent document 3: japanese patent laid-open No. 2014-45672

Disclosure of Invention

Problems to be solved by the invention

(1) The problems corresponding to the background art (1) are as follows.

Since the exhaust pipe flows from the exhaust gas of high temperature from the exhaust gas treatment device to become high temperature, it is necessary to suppress contact with grass clippings and the hands and feet of the driver. Here, the arrangement of the exhaust pipe is determined according to the arrangement of the exhaust gas treatment device and the driver, reaper, conveyor, and the like. In recent years, it has been desired to increase the size of a crop processing device such as a threshing device mounted on a machine body of a harvester such as a combine harvester to improve the work efficiency. Accordingly, the space in which the exhaust pipe can be disposed becomes narrow, and it becomes difficult to suppress contact between the exhaust pipe and the grass clippings or the hands and feet of the driver.

In view of the above circumstances, an object of the present invention is to provide a harvester in which contact between grass clippings, and the hands and feet of a driver, with an exhaust pipe is suppressed.

(2) The problems corresponding to the background art (2) are as follows.

In the combine harvester of patent document 2, when the power clutch unit and the operation rope for transmitting the operation from the power clutch unit to each clutch are broken, the work device cannot be operated and the work cannot be continued.

In view of the above circumstances, an object of the present invention is to provide a work machine capable of continuing work even when a trouble occurs.

(3) The problems corresponding to the background art (3) are as follows.

Among the above-described harvesters, there are some harvesters that increase the output of an engine in recent years in order to improve the efficiency of harvesting work, and accordingly increase the size and weight of each device. However, when the conventional structure is employed as a support structure for the driving portion and the periphery of the engine when the size of each device is increased as described above, there is a concern that the rigidity of the support structure for supporting the entire driving portion and the periphery of the engine may be insufficient.

Therefore, it is desirable to improve the support strength of the frame structure around the cab and the engine.

Means for solving the problems

(1) The solution corresponding to the problem (1) is as follows.

The harvester of the present invention is characterized by comprising: a harvesting part which is arranged at the front part of the machine body and harvests crops in a field; a conveying part which is arranged on one side part of the machine body and conveys the crops harvested by the harvesting part; a driver provided on the other side of the body; an exhaust gas treatment device disposed below the driver's seat and treating exhaust gas of the engine; and an exhaust pipe that discharges exhaust gas from the exhaust gas treatment device, the exhaust pipe extending from the exhaust gas treatment device in a direction toward the conveyance unit and then bending backward, the exhaust pipe extending backward between the conveyance unit and the operator's unit, and the harvester including a bending portion cover that covers a portion of the exhaust pipe that bends backward from above.

When the exhaust treatment device is disposed below the cab and the exhaust pipe extends from the exhaust treatment device in the direction of the conveyance unit, the exhaust pipe passes near the cab. According to this feature, the curved portion cover can suppress contact between the driver's hands and feet and the exhaust pipe. Further, the grass clippings falling from above can be suppressed from contacting the exhaust pipe.

In the present invention, it is preferable that an upper surface portion of the curved portion cover is inclined.

According to this configuration, the grass clippings falling from above can be prevented from accumulating on the upper surface portion of the curved portion cover.

In the present invention, it is preferable that a lateral cover portion extending to a lower side than a lower end of the bending portion be provided at a portion of the bending portion cover on the side of the conveying portion.

According to this configuration, contact between the driver's hands and feet and the exhaust pipe can be reliably suppressed.

In the present invention, it is preferable to provide: a threshing device which is arranged at the rear side of the conveying part and is used for threshing the reaped objects reaped by the reaping part; and a connecting frame connecting the driving unit and the threshing device, wherein the curved cover is supported by the connecting frame.

According to this configuration, the bending portion cover can be reliably supported.

In the present invention, it is preferable that the exhaust treatment device cover is supported by the driver section and covers the exhaust treatment device from the conveyor section side, the exhaust pipe is provided so as to penetrate the exhaust treatment device cover, and the bent portion cover is supported by the exhaust treatment device cover.

According to this configuration, the bending portion cover can be supported more reliably.

In the present invention, it is preferable that a gap for allowing air to flow from the outside to the inside of the exhaust pipe is formed in a portion of the exhaust pipe on the downstream side of the bent portion, and the bent portion cover is disposed in front of the gap.

According to this structure, the exhaust gas can be cooled by the air flowing in from the gap. Further, since the curved portion cover is disposed in front of the gap, the grass clippings can be suppressed from entering from the gap, and cooling by the gap is not inhibited.

(2) The solution corresponding to the problem (2) is as follows.

The work machine according to the present invention is characterized by comprising: a clutch which is turned on/off in accordance with the operation of the operation unit to transmit power to the working unit; an actuator that operates in accordance with an operation input to the first human operation element; a first coupling mechanism that couples the actuator and the operating portion; and a second coupling mechanism that couples the second human operation element and the operation portion.

According to this feature, even when the actuator or the first coupling mechanism is broken down, the clutch can be operated by the second manual operation element via the second coupling mechanism, and the work portion can be operated to continue the work.

In the present invention, it is preferable that the first coupling mechanism and the second coupling mechanism are configured to be replaceably engaged with the operation portion.

According to this configuration, since the engagement can be performed by switching from the first coupling mechanism to the second coupling mechanism when a failure occurs, adverse effects (for example, erroneous operation of the first coupling mechanism) caused by the failed first coupling mechanism can be eliminated, and the clutch can be reliably operated by the second manual operation element.

In the present invention, it is preferable that the clutch is disposed on a center side of the body, and the second coupling mechanism includes an operation cord in which an end portion on a side of the second manual operation element is disposed on an outer peripheral side of the body.

According to this configuration, the clutch on the center side of the machine body can be easily operated from the vicinity of the outer periphery of the machine body.

In the present invention, it is preferable to provide: a driving section; a grain storage box disposed behind the driving part and used for storing grains obtained through threshing treatment; and a grain discharging device as the working device, discharging grains from the grain storage box, wherein the clutch is turned on and off to transmit power to the grain discharging device, and is disposed between the steering unit and the grain storage box, and an end of the operation cord of the second coupling mechanism on the side of the second human operation element is supported by an outer peripheral side portion of a body of a frame of the steering unit.

According to this configuration, the grain discharging device can be operated by operating the clutch between the cab and the grain storage box from the vicinity of the outer periphery of the cab. That is, even when the actuator or the first coupling mechanism is broken, the grain discharging device can be operated by easily operating the clutch, and the grain discharging operation can be continued.

In the present invention, it is preferable that the vehicle further includes a driving unit, the clutch is disposed on a center side of the machine body, and the second coupling mechanism includes an operation rope, and an end portion of the operation rope on the side of the second human operation element is disposed on the driving unit.

According to this configuration, the clutch located at the center of the body can be easily operated from the driver.

In the present invention, it is preferable to provide: a grain storage box disposed behind the driving part and storing grains obtained by threshing; and a grain discharging device as the working device, discharging grains from the grain storage box, wherein the clutch is turned on and off for transmitting power to the grain discharging device, and is disposed between the steering unit and the grain storage box, an end of the operation cord of the second coupling mechanism on the side of the second human operation element is supported by a side panel disposed on a side opposite to the riding port in the left-right direction of the body in the steering unit.

According to this configuration, the grain discharging device can be operated by operating the clutch between the cab and the grain storage box through the side panel of the cab. That is, even when the actuator or the first coupling mechanism fails, the grain discharging device can be operated by easily operating the clutch, and the grain discharging operation can be continued.

In the present invention, it is preferable that the first coupling mechanism includes an operation cord whose case has a clutch-side end supported by a support, and the second coupling mechanism includes an operation cord whose case has a clutch-side end supported by the support.

According to this structure, the first coupling mechanism and the second coupling mechanism have substantially the same positional relationship with the operating portion, and therefore the direction of the force applied to the operating portion by the second coupling mechanism is substantially the same as the direction of the force applied to the operating portion by the first coupling mechanism. Therefore, the clutch can be operated by the second manual operation member efficiently and reliably. In addition, the housing of the first coupling mechanism and the second coupling mechanism can be supported by one support member, and the structure is simple and preferable.

In the present invention, it is preferable that the clutch is a belt-tension clutch having a tension pulley, an end portion of a spring that suspends and supports the tension pulley on a side opposite to the tension pulley is the operating portion, and the stay is located above the spring.

When the stay is located below the spring, the winding of the operation cord from the stay to the operation portion becomes complicated, and there is a risk that the reliability of the operation of the clutch is impaired. According to this structure, the winding of the operation cord from the support member to the operation portion can be simplified. Further, according to this configuration, since the tension sheave suspended and supported by the spring is operated by the operation rope supported by the support located above the spring, the operation of the operation rope for operating the clutch is preferably a simple raising operation, and the reliability of the clutch operation is improved.

(3) The solution corresponding to the problem (3) is as follows.

The harvester of the present invention is characterized by comprising: a driver part having a driver seat; an engine located below the driver section; an engine cover that covers the periphery of the engine to form an engine room and supports the driver seat by a top plate; a plurality of rear vertical frames erected from the body frame in a laterally juxtaposed state behind the driver's seat; and a roof support frame that supports the roof panel in the engine hood, and the plurality of rear vertical frames are connected to the roof support frame, respectively.

A plurality of rear vertical frames erected from the machine body frame in a horizontally aligned state are connected to the top plate support frame, respectively. The roof support frame is a member for supporting the driver seat, and is located at a position away from the body frame on the upward side, and therefore is located at the vertically middle portion of the rear vertical frame.

As a result, the lower end portions of the rear vertical frames are connected to the body frame, and the upper and lower intermediate portions are connected to the top panel support frame, so that the rear vertical frames are firmly connected and supported by two portions spaced apart in the up-down direction. Alternatively, although the roof support frame is provided so as to support the roof while extending in the left-right direction, the roof support frame is firmly supported by being connected to the plurality of rear vertical frames at the middle portion in the extending direction.

Therefore, the plurality of rear vertical frames and the roof support frame are coupled, and thereby the support strength can be improved in the frame structure around the cab and the engine.

In the present invention, it is preferable that a side panel portion is provided on a lateral side of the driver seat, and a rear vertical frame provided rearward of the side panel portion among the plurality of rear vertical frames supports a rear end portion of the side panel portion.

According to this configuration, since the rear end portion of the side panel portion is supported by the rear vertical frame, the side panel portion can have a large support strength against a load in the vertical direction.

In the present invention, it is preferable that a first side vertical frame is provided on a lateral side of the side panel portion opposite to the driver seat in a state of being erected from the body frame, and the roof support frame is connected to the first side vertical frame.

According to this configuration, the roof support frame is connected to the first side vertical frame in addition to the plurality of rear vertical frames, and therefore the support strength can be further improved.

In the present invention, it is preferable that the side panel portion is supported by the first side vertical frame.

According to this structure, the support can be further firmly supported against the vertical load of the side panel portion.

In the present invention, it is preferable that a second side vertical frame is provided behind the first side vertical frame in a state of being erected from the machine body frame, and the first side vertical frame is connected to the second side vertical frame.

According to this configuration, since the first side vertical frame and the second side vertical frame are coupled to each other, the support strength against the lateral load of the first side vertical frame can be improved.

In the present invention, it is preferable that the roof support frame includes a front lateral frame structure located on a front side and extending in a lateral direction, a rear lateral frame structure located on a rear side and extending in the lateral direction, and a plurality of front-rear frame structures extending from the front lateral frame structure to the rear lateral frame structure, which are connected to each other.

According to this configuration, since the roof support frame has a frame shape that connects the lateral frame structures on both the front and rear sides and the plurality of front and rear frame structures, the roof support frame has a large rigidity and can improve the support strength.

In the present invention, it is preferable that a radiator for cooling the engine and a radiator support frame which is erected from the machine body frame and supports the radiator be provided on the laterally outer side of the engine, and the roof support frame be connected to the radiator support frame.

According to this configuration, the radiator support frame that supports the radiator that is a large-sized device is a strong member having high support strength. Therefore, by connecting the roof support frame to the radiator support frame, the support strength of the roof support frame can be increased.

In the present invention, it is preferable to provide: an exhaust gas treatment device that performs a purification treatment on exhaust gas from the engine; and an exhaust gas information display operation unit that displays information related to the exhaust gas treatment device and performs an operation related to the information, the exhaust gas information display operation unit being provided at a distal end portion of the driver unit.

According to this configuration, since the exhaust gas information display operation unit is provided at the distal end portion of the driver's seat, the driver who sits on the driver's seat and performs driving operation can easily visually confirm the information displayed by the exhaust gas information display operation unit. As a result, it is possible to quickly confirm information on the exhaust gas treatment device or perform necessary operations.

In the present invention, it is preferable that the exhaust gas information display operation unit is provided in a front end portion of the operation unit in a position in front of the operation seat.

According to this configuration, since the driver is positioned in front of the driver's seat, the driver can more easily confirm the information displayed by the exhaust gas information display operation portion.

In the present invention, it is preferable that a travel information display unit that displays information on a travel state of the machine body is provided at a distal end portion of the driver unit, a steering lever is provided at the distal end portion of the driver unit, and the exhaust gas information display operation unit is provided between the steering lever and the travel information display unit.

According to this configuration, the driver can easily confirm the information on the traveling state of the machine body. In addition, while the driver intends to travel while checking the travel information display unit while operating the steering lever during the work travel, the exhaust gas information display operation unit is interposed between the steering lever and the travel information display unit, and therefore, it is easy to visually check information related to exhaust gas.

In the present invention, it is preferable that a travel information display unit that displays information on a travel state of the machine body is provided at a distal end portion of the driver unit, the exhaust gas information display operation unit is provided adjacent to the travel information display unit, a steering lever is provided at a distal end portion of the driver unit, and the exhaust gas information display operation unit is provided on an opposite side of the steering lever with respect to the travel information display unit in a left-right direction of the machine body.

According to this configuration, since the exhaust gas information display operation unit is adjacent to the travel information display unit, it is further easy to confirm the information related to the exhaust gas. Further, the running state can be easily checked, and the information related to the exhaust gas can be visually checked.

In the present invention, it is preferable that a steering wheel is provided at a front portion of the driver's seat in a front portion of the driver's portion, the exhaust gas information display operation portion is provided on an inner peripheral side of the steering wheel as viewed from a driver seated in the driver's seat, a manipulation panel portion is provided at a front portion of the driver's portion, and the exhaust gas information display operation portion is provided on the manipulation panel portion.

According to this configuration, the direction changing operation can be easily performed by the steering wheel, and the information of the exhaust gas information display operation unit can be confirmed while looking straight ahead. Further, the exhaust gas information display operation unit can be provided on the operation panel unit in a state easily visible to the driver.

In the present invention, it is preferable that a steering wheel is provided in a front portion of the driver's seat, the exhaust gas information display operation unit is provided adjacent to the steering wheel in a state of being positioned on an outer peripheral side of the steering wheel as viewed from a driver seated in the driver's seat, and an operation panel unit is provided in a front portion of the driver's seat, and the exhaust gas information display operation unit is provided in the operation panel unit.

According to this configuration, the exhaust gas information display operation unit is located at a position on the outer peripheral side of the steering wheel that is largely open, and therefore the exhaust gas information is easily visible. Further, the exhaust gas information display operation unit can be provided on the operation panel unit in a state easily visible to the driver.

In the present invention, it is preferable that a steering wheel is provided at a front portion of the driver's seat in a front portion of the driver's seat, the exhaust gas information display operation unit is provided adjacent to the steering wheel in a state of being positioned on an outer peripheral side of the steering wheel as viewed from a driver seated in the driver's seat, side panel portions are provided on lateral sides of the driver's seat so as to straddle the front and rear of the driver's seat, and the exhaust gas information display operation unit is provided at a front end portion of the side panel portions.

According to this configuration, the exhaust gas information display operation unit is located at a position on the outer peripheral side of the steering wheel that is largely open, and therefore the exhaust gas information is easily visible. Further, the front end portion of the side panel portion is easily formed into a vacant region, and the exhaust gas information display operation portion can be provided in a state in which the information relating to the exhaust gas can be easily confirmed by effectively using the region.

In the present invention, it is preferable that the exhaust gas treatment device executes a trapping process of trapping particulate matter and a regeneration process of burning and removing the trapped particulate matter, the exhaust gas information display operation unit displays information related to the regeneration process of the exhaust gas treatment device, and the information related to the regeneration process is information on whether or not the exhaust gas treatment device is executing the regeneration process and information on whether or not the exhaust gas treatment device is in a state in which the regeneration process should be executed.

According to this structure, clogging can be avoided by performing the regeneration treatment, while exhaust gas is purified by trapping particulate matter for a long period of time. In addition, the driver can easily confirm whether the exhaust gas treatment device should be subjected to the regeneration treatment, and the use is easy.

Drawings

Fig. 1 is a view showing a first embodiment (hereinafter, the first embodiment is shown in fig. 10), and is a right side view showing the whole combine harvester.

Fig. 2 is a plan view showing the whole of the combine harvester.

Fig. 3 is a plan view showing the exhaust pipe and the bending portion cover.

Fig. 4 is a left side view showing the exhaust pipe and the bending portion cover.

Fig. 5 is a perspective view showing the exhaust pipe and the bending portion cover.

Fig. 6 is a left side sectional view showing the clutch switching lever.

Fig. 7 is a plan view showing the clutch switching lever.

Fig. 8 is a rear sectional view showing the clutch switching lever.

Fig. 9 is a plan view showing the front panel.

Fig. 10 is a left side view showing a support structure of the brake sensor.

Fig. 11 is a view showing the second embodiment (hereinafter, the second embodiment is shown in fig. 37), and is a right side view showing the all-feed type combine harvester.

Fig. 12 is a plan view showing a whole-feed type combine.

Fig. 13 is a left side sectional view showing the threshing device.

Fig. 14 is a diagram showing a power transmission path of the combine harvester.

Fig. 15 is a left side view showing the cab.

Fig. 16 is a top sectional view showing the cab.

Fig. 17 is a rear sectional view showing a cab and an engine room.

Fig. 18 is a right side sectional view showing a cab and an engine room.

Fig. 19 is a left side sectional view showing the clutch switching lever.

Fig. 20 is a plan view showing the clutch switching lever.

Fig. 21 is a rear sectional view showing the clutch switching lever.

Fig. 22 is a right side view showing the clutch switching device and its peripheral structure.

Fig. 23 is a plan view showing the clutch switching device and its peripheral structure.

Fig. 24 is a rear view showing the clutch switching device and its peripheral structure.

Fig. 25 is an exploded perspective view showing the clutch switching device.

Fig. 26 is a right side sectional view showing the clutch switching device.

Fig. 27 is a top sectional view showing the clutch switching device.

Fig. 28 is a diagram showing a control block.

Fig. 29 is a view showing the rotational positions of the first cam, the second cam, and the third cam.

Fig. 30 is a diagram showing the correspondence between the rotational positions of the first cam, the second cam, and the third cam and the states of the harvest clutch, the grain discharge clutch, and the threshing clutch.

Fig. 31 is a right side view showing a peripheral structure of the grain discharging clutch.

FIG. 32 is a rear view showing the peripheral structure of the grain discharging clutch.

Fig. 33 is a right side view showing a peripheral structure of an end portion of the fourth wire rope.

FIG. 34 is a right side view showing a peripheral structure of a grain discharge clutch.

Fig. 35 is a plan view showing a driver part according to another embodiment.

FIG. 36 is a right side view showing a peripheral structure of a grain discharging clutch according to another embodiment.

Fig. 37 is a right sectional view showing a clutch switching device according to another embodiment.

Fig. 38 is a view showing the third embodiment (hereinafter, the third embodiment is shown in all of fig. 52), and is an overall side view of the combine harvester.

Fig. 39 is an overall plan view of the combine harvester.

Fig. 40 is a plan view of the cab.

Fig. 41 is a plan view of the exhaust gas information display operation unit.

Fig. 42 is a side view showing a supporting structure of the steering and a grain discharging transmission system.

Fig. 43 is a perspective view showing a manual operation mechanism.

Fig. 44 is a perspective view showing a support structure of the front part of the body.

Fig. 45 is a side view showing a support structure of the front part of the body.

Fig. 46 is a plan view showing a support structure of the front part of the machine body.

Fig. 47 is a plan view of a steering unit according to another embodiment.

Fig. 48 is a plan view of a cab according to another embodiment.

Fig. 49 is a plan view of a driver part according to another embodiment.

Fig. 50 is a plan view of a cab according to another embodiment.

Fig. 51 is a plan view of a driver part according to another embodiment.

Fig. 52 is a plan view of a steering unit according to another embodiment.

Detailed Description

[ first embodiment ]

Hereinafter, an embodiment as an example of the present invention will be described with reference to the drawings. In the following description, regarding the body of the all-feed type combine harvester, the direction of arrow F shown in fig. 1, 2, etc. is referred to as "body front", the direction of arrow B is referred to as "body rear", the direction of arrow U shown in fig. 8, etc. is referred to as "body upper", the direction of arrow D is referred to as "body lower", the direction of arrow L shown in fig. 2, etc. is referred to as "body left", and the direction of arrow R is referred to as "body right".

[ integral structure of whole-feed type combine harvester ]

As shown in fig. 1 and 2, a frame-shaped machine frame 1 configured by combining rod-shaped frame members and the like and a pair of right and left crawler type traveling devices 2 attached to a lower portion of the machine frame 1 are provided in a machine body of a full-feeding type combine harvester. A driver part 3 is provided at one lateral side (right side portion) of the machine body. The passenger space of the driving unit 3 is covered by the vehicle compartment 4. An engine room 6 having an engine 5 is provided below the cab 3. A harvesting part 7 (corresponding to a "harvesting part") for harvesting a standing grain pole of rice, wheat, or the like as a field crop is provided at the front part of the machine body so as to be able to rise and fall. The back part of the machine body frame 1 is provided with a threshing device 8 and a grain box 9. The threshing device 8 and the grain tank 9 are provided side by side in the transverse width direction of the machine body. One lateral side portion (left side portion) of the machine body is provided with a feeder 10 (corresponding to a "conveying portion") so as to straddle the harvesting portion 7 and the threshing device 8. The whole of the straw harvested in the harvesting section 7 is fed to the threshing device 8 from the root to the stalk through the feeder 10, and is threshed in the threshing device 8. The threshing device 8 is provided on the rear side of the feeder 10. A winnowing device is vertically arranged between the threshing device 8 and the grain box 9. The winnower is connected to a grain discharge part formed at the lower part of the threshing device 8 and a grain supply part formed at the upper part of the grain box 9. The grains obtained by the threshing device 8 are supplied to the grain box 9 by the winnowing device and stored in the grain box 9.

A grain discharging device 12 is provided for discharging grains in the grain tank 9 to the outside. The grain discharging device 12 is provided with a vertical conveying part for conveying grains in the grain box 9 upward and a horizontal conveying part for conveying the grains from the vertical conveying part to the outside of the matrix.

As shown in fig. 1 and 2, the engine 5 is provided on the front side of the grain tank 9.

An exhaust gas treatment device 13 for purifying exhaust gas from engine 5 is provided in engine compartment 6 above engine 5. The exhaust gas treatment device 13 is configured to perform a purification treatment of the exhaust gas in which diesel particulates are reduced by introducing the exhaust gas of the engine 5 and trapping the diesel particulates contained in the introduced exhaust gas by a trapping filter (not shown).

[ exhaust pipes ]

As shown in fig. 1 and 2, an exhaust pipe a is connected to the exhaust gas treatment device 13. The exhaust pipe a extends from the exhaust gas treatment device 13 in the direction of the feeder 10 (leftward), then curves rearward, and extends rearward between the feeder 10 and the cab 3. The exhaust port 25 of the exhaust pipe a opens at the rear of the machine body.

The exhaust pipe a includes: a first exhaust pipe portion 17 (corresponding to a "bent portion"), a second exhaust pipe portion 18, and a third exhaust pipe portion 19.

As shown in fig. 2 and 3, the first exhaust pipe portion 17 is disposed between the driving portion 3 and the threshing device 8. The first exhaust pipe portion 17 is connected to the exhaust gas treatment device 13 on the upstream side and to the second exhaust pipe portion 18 on the downstream side. First exhaust pipe 17 extends horizontally in the direction of feeder 10 (leftward) from a connection point with exhaust gas treatment device 13, and then curves upward and rearward. The first exhaust pipe portion 17 is bent rearward at an angle of 90 ° in a plan view.

As shown in fig. 2, the second exhaust pipe part 18 is arranged between the driving part 3 and the threshing device 8 at the front side and between the grain tank 9 and the threshing device 8 at the rear side. The second exhaust pipe portion 18 is connected to the first exhaust pipe portion 17 on the upstream side and to the third exhaust pipe portion 19 on the downstream side. The second exhaust pipe portion 18 extends obliquely rearward and upward from a connection portion with the first exhaust pipe portion 17, and then horizontally extends rearward. The downstream side portion, i.e., the rear side portion of the second exhaust pipe portion 18 is formed of a double pipe having an inner pipe and an outer pipe fitted around the inner pipe.

As shown in fig. 2, the third exhaust pipe portion 19 is arranged such that the front portion thereof is disposed between the grain tank 9 and the threshing device 8 and the rear portion thereof is disposed to protrude rearward from the body. The third exhaust pipe portion 19 is connected to the second exhaust pipe portion 18 on the upstream side and has an open end on the downstream side. The third exhaust pipe portion 19 extends horizontally rearward from a connection portion with the second exhaust pipe portion 18, and then extends obliquely rearward and upward while expanding in diameter. The third exhaust pipe portion 19 is formed of a double pipe having an inner pipe and an outer pipe fitted around the inner pipe at an upstream side, i.e., a front side.

As shown in fig. 4 and 5, the first exhaust pipe portion 17 and the second exhaust pipe portion 18 are connected in a state in which the front end of the second exhaust pipe portion 18 is fitted around the rear end of the first exhaust pipe portion 17 and a gap S1 is formed between the rear end of the first exhaust pipe portion 17 and the front end of the second exhaust pipe portion 18. When the exhaust gas from the exhaust gas treatment device 13 flows into the second exhaust pipe portion 18 through the first exhaust pipe portion 17, the air outside the exhaust pipe a is introduced into the inside of the second exhaust pipe portion 18 through the gap S1 by the injection effect achieved by the exhaust gas flow. By mixing the introduced air, the exhaust gas inside the second exhaust pipe portion 18 is cooled. In other words, in the exhaust pipe a, a gap S1 for allowing air to flow from the outside to the inside of the exhaust pipe a is formed in the downstream side portion of the first exhaust pipe portion 17, and the gap S1 constitutes a cooling portion of the exhaust gas using the ejector effect.

As shown in fig. 5, the second exhaust pipe portion 18 and the third exhaust pipe portion 19 are connected with each other in a state where the front end of the third exhaust pipe portion 19 is fitted around the rear end of the second exhaust pipe portion 18 and a gap S2 is formed between the rear end of the second exhaust pipe portion 18 and the front end of the third exhaust pipe portion 19. When the exhaust gas from the exhaust gas treatment device 13 flows into the third exhaust pipe portion 19 through the second exhaust pipe portion 18, the air outside the exhaust pipe a is introduced into the inside of the third exhaust pipe portion 19 through the gap S2 by the injection effect achieved by the flow of the exhaust gas. By mixing the introduced air, the exhaust gas inside the third exhaust pipe portion 19 is cooled. In other words, a gap S2 for allowing air to flow from the outside of the exhaust pipe a into the inside is formed in the exhaust pipe a at the downstream side portion of the second exhaust pipe portion 18, and the gap S2 constitutes a cooling portion of the exhaust gas using the ejector effect.

[ curved part cover ]

As shown in fig. 3, a curved cover 30 that covers the first exhaust pipe 17 from above is provided between the driving unit 3 and the threshing device 8. In other words, the bending portion cover 30 is disposed at the upper front of the first exhaust pipe portion 17. That is, the bending portion cover 30 is disposed in front of the gap S1. As shown in fig. 3, 4, and 5, the bending portion cover 30 includes: an upper surface portion 30a, a lateral cover portion 30b, and a brace portion 30 c.

The upper surface portion 30a is a portion on the front side in the curve cover 30. The upper surface portion 30a is a rectangular flat plate-like portion, and is inclined to the right front with respect to the horizontal plane. In other words, the upper surface portion 30a is disposed in an attitude in which the normal line thereof is directed obliquely upward and rightward.

The horizontal cover portion 30b is a portion of the curved cover 30 on the feeder 10 side (left side), and is connected to the left side of the upper surface portion 30 a. The horizontal cover portion 30b is a triangular flat plate-like portion, and is inclined obliquely rightward and forward with respect to a vertical plane parallel to the front-rear direction. In other words, the lateral cover portion 30b is disposed in an attitude in which its normal line is oriented diagonally forward to the left. As shown in fig. 4, the lower end of the lateral cover portion 30b is located below the lower end of the first exhaust pipe portion 17. In other words, the lateral cover portion 30b extends to a lower side than the lower end of the first exhaust pipe portion 17.

The support member 30c is a portion on the upper side of the curved portion cover 30, and is connected to the upper side of the upper surface portion 30 a. The support member 30c is a substantially rectangular flat plate-like portion, and is inclined obliquely leftward and rightward with respect to a vertical plane parallel to the front-rear direction. In other words, the brace portion 30c is disposed in an attitude in which the normal line thereof is oriented diagonally forward to the right.

As shown in fig. 3, 4, and 5, the curved portion cover 30 is supported by the coupling frame 40 and the exhaust treatment device cover 50.

The coupling frame 40 is a frame that couples the cab 3 and the threshing device 8. As shown in fig. 3, the right end portion of the connecting frame 40 is connected to the frame 3a at the left rear portion of the cab 3. The left end of the linking frame 40 is connected to a frame 8a at the front right of the threshing device 8. The support of the curved portion cover 30 by the coupling frame 40 is achieved by fitting the support portion 30c of the curved portion cover 30 to the front surface of the coupling frame 40.

Exhaust gas treatment device cover 50 shown in fig. 4 and 5 is a cover that is supported by cab 3 and covers exhaust gas treatment device 13 from the side of feeder 10 (left side). Specifically, exhaust treatment device cover 50 is supported by frames 3b, 3c, and 3d on the left side of cab 3. Exhaust treatment device cover 50 is disposed on the left side portion of cab 3, and covers the upper left portion of engine compartment 6.

Exhaust gas treatment device cover 50 is a rectangular flat plate-like member and is disposed on a plane extending in the vertical direction and the front-rear direction. In other words, the exhaust gas treatment device cover 50 is disposed in a posture in which the normal line thereof is oriented in the left-right direction.

As shown in fig. 4, the support of the curved portion cover 30 by the exhaust treatment device cover 50 is achieved by fitting the lower end portion of the upper surface portion 30a of the curved portion cover 30 to a stay 50a provided on the exhaust treatment device cover 50.

As shown in fig. 4, exhaust treatment device cover 50 has a notch portion 50b at its rear end portion. First exhaust pipe portion 17 extends from the inside to the outside of engine compartment 6 through notch portion 50 b. In other words, the first exhaust pipe portion 17 is provided so as to penetrate the exhaust treatment device cover 50.

[ Clutch switching lever ]

The driving unit 3 is provided with a clutch switching lever 81. As shown in fig. 6 to 8, the clutch switching lever 81 is a forward and backward swing operation type lever, and is a single lever that switches between a two-way communication state and a disconnection state of the harvesting clutch and the threshing clutch. The clutch switching lever 81 is disposed to be changeable in position among the first operation position O1, the second operation position O2, and the third operation position O3. The first operating position O1 is an operating position in which both the harvest clutch and the threshing clutch are in a communicating state. The second operating position O2 is an operating position in which the harvesting clutch is in the disconnected state and the threshing clutch is in the connected state. The third operating position O3 is an operating position in which both the harvest clutch and the threshing clutch are in the off state. The clutch switching lever 81 is provided behind the main shift lever.

The clutch switching lever 81 is disposed to be swingable back and forth around a swing axis X1 extending in the left-right direction of the machine body. The clutch switching lever 81 is provided with: a handle 91, a handle-side lever body 92, a spindle-side lever body 93, and a lever spindle 94. The handle-side lever 92 is coupled to the support shaft-side lever 93 via a hinge 95 with a spring (not shown) so as to be swingable in the left and right directions. The spring biases the handle-side lever body 92 to swing leftward. The handle-side lever 92 is provided with a stopper 92a that abuts against the spindle-side lever 93 to restrict the handle-side lever 92 from swinging leftward.

[ Oscillating support ]

A swing support portion 96 is provided for supporting the clutch switching lever 81 so that the clutch switching lever 81 can swing about the swing axial center X1. The swing support portion 96 also supports the position detection sensor 82. The swing support portion 96 is placed and supported on the upper surface portion of the top plate 67 inside the side plate 59. The swing support portion 96 is formed of a substantially L-shaped plate material. The swing support portion 96 is provided with a base portion 97 along the top plate 67 and a vertical wall portion 98 perpendicular or substantially perpendicular to the top plate 67. The base 97 is fixed to the top plate 67 by bolts 99. A boss portion 100 through which the lever support shaft 94 is inserted is provided in the vertical wall portion 98. A mounting portion 101 to which the position detection sensor 82 is mounted is provided on the left side portion of the vertical wall portion 98.

[ guide portion ]

Is provided with: the lever guide 103 has a guide portion 102 for guiding the clutch switching lever 81. The lever guide 103 is provided so as to straddle the swing support portion 96 in the left-right direction. Leg portions 103a are formed at both left and right end portions of the lever guide 103. The leg 103a is fixed to the top plate 67 by a bolt 104. The guide portion 102 is provided in a portion of the lever guide 103 located above the swing support portion 96.

The guide portion 102 is provided with a linear portion 102a and an entrance portion 102 b. The linear portion 102a extends linearly in the swing operation direction (front-rear direction) of the clutch switch lever 81. In the linear portion 102a, the width B2 of the section on the first operation position O1 side is narrower than the width B1 of the section between the second operation position O2 and the third operation position O3.

The entering portion 102b is formed in a shape in which the clutch switching lever 81 enters in a direction (leftward direction) intersecting the swing operation direction in a state of being connected to the linear portion 102 a. The entering portions 102b are provided at a position corresponding to the first operation position O1, a position corresponding to the second operation position O2, and a position corresponding to the third operation position O3, respectively. The handle-side lever 92 is pivotally biased by the spring toward the entering portion 102b in a state of entering the entering portion 102b, and thereby the clutch switching lever 81 is positionally held at each operation position.

The clutch switching lever 81 is a forward-backward swinging operation type lever as described above, and is arranged to be capable of being operated forward and backward along the linear portion 102a after being preliminarily operated. Specifically, the clutch switch lever 81 is configured to: after the operation of disengaging the handle-side lever 92 from the entry portion 102b against the biasing force of the spring as the preliminary operation is performed, the operation can be performed to swing back and forth along the linear portion 102 a. Thus, while the clutch switching lever 81 cannot be operated to swing back and forth along the straight portion 102a in the state where the clutch switching lever 81 is held in position at each operating position, the handle-side lever 92 is operated to swing right against the urging force of the spring and disengaged from the entry portion 102b, so that the clutch switching lever 81 can be operated to swing back and forth along the straight portion 102 a.

Here, when the clutch switching lever 81 is switched from the third operation position O3 side to the first operation position O1 in a state where the handle side lever 92 is operated to swing to the right side, the handle side lever 92 abuts against the end portion 102c of the guide portion 102 to prevent the clutch switching lever 81 from swinging to the front side. Therefore, in order to release the contact with the end portion 102c of the guide portion 102, the clutch switching lever 81 needs to be operated to swing slightly to the left to swing the handle-side lever body 92 to the front.

[ front panel ]

As shown in fig. 9, a front panel 55 is provided at a front portion of the cab 3. The front panel 55 is provided with a steering rod 56, a DPF panel 57, and an instrument panel 58 in this order from the right. The steering lever 56 receives operations such as a steering operation of the traveling machine body, a lifting operation of the harvesting section 7, and the like. The DPF panel 57 displays the regeneration state of the exhaust gas treatment device 13 and receives an operation related to the regeneration operation. The instrument panel 58 displays the running vehicle speed, the engine load, the remaining fuel amount, and the like. The DPF panel 57 is provided in a central portion of the front panel 55. An instrument panel 58 is provided at a left side portion of the front panel 55.

[ fixation of side panels to the top panel ]

As shown in fig. 8, the side panel 59 is fixed to the upper surface of the top plate 67. The fixing of the side panel 59 to the top panel 67 is achieved by: a claw 59a provided at the lower end of the side plate 59 is inserted into a hole 67a formed in the upper surface of the top plate 67, and the upper surface of the claw 59a engages with the lower surface of the top plate 67. The front panel 55 is also fixed to the top plate 67 in the same manner as the side panel 59 is fixed to the top plate 67.

[ support Structure of brake sensor ]

As shown in fig. 10, the brake sensor 110 is supported by a support member 113.

The support 113 is detachably attached to the frame 111 of the cab 3 by bolts 112. The brake sensor 110 detects an operation state of a parking brake pedal 3e provided in the driver section 3. Specifically, the member 115 attached to the shaft member 114 that rotates in conjunction with the parking brake pedal 3e presses the tip end of the brake sensor 110, thereby sensing that the parking brake pedal 3e is depressed. In the present embodiment, the brake sensor 110 is supported by the support 113 that is detachable from the frame 111, and thus the adjustment of the brake sensor 110 can be easily performed by detaching the support 113 from the frame 111.

[ Another embodiment ]

(1) In the above embodiment, an example in which the bending portion cover 30 covers the first exhaust pipe portion 17 from above is described. The bending portion cover 30 may cover both the upper and lower sides of the first exhaust pipe portion 17.

(2) In the above embodiment, an example in which the upper surface portion 30a of the bending portion cover 30 is inclined to the right front side with respect to the horizontal plane is described. The upper surface portion 30a may be inclined in other directions. For example, the upper surface portion 30a may be inclined forward with respect to the horizontal plane. In other words, the upper surface portion 30a may be disposed in an attitude in which the normal line thereof is directed obliquely forward and upward.

(3) In the above embodiment, an example in which the bending portion cover 30 is supported by the coupling frame 40 and the exhaust treatment device cover 50 is described. The flexure cover 30 may be supported by other members.

(4) In the above embodiment, an example in which the exhaust pipe a is constituted by three members (the first exhaust pipe portion 17, the second exhaust pipe portion 18, and the third exhaust pipe portion 19) has been described. The exhaust pipe a may be formed of one member, two members, or four or more members.

(5) In the above embodiment, the first exhaust pipe portion 17 is bent rearward at an angle of 90 ° in a plan view. The angle at which the first exhaust pipe portion 17 is bent rearward may be smaller than 90 ° or larger than 90 °.

(6) The present invention can be applied to a harvester that travels while harvesting a planted crop, and can be applied to a semi-feeding type combine harvester, a corn harvester, and the like, in addition to a full-feeding type combine harvester.

[ second embodiment ]

Embodiments of the present invention will be described based on the drawings. In the following description, the direction of arrow F is referred to as "front side of the body" (see fig. 11 and 12), the direction of arrow B is referred to as "rear side of the body" (see fig. 11 and 12), the direction of arrow L is referred to as "left side of the body" (see fig. 12), and the direction of arrow R is referred to as "right side of the body" (see fig. 12).

[ integral structure of combine harvester ]

A whole-feed combine harvester (an example of a "working machine") is shown in fig. 11 and 12. The combine harvester is provided with a machine body frame 201 and a crawler belt 202. A harvesting part 203 for harvesting and planting the vertical grain pole is arranged in front of the traveling machine body. The harvesting section 203 is provided with: a raking reel 204 for raking the planted vertical grain rods, a harvesting knife 205 for cutting the planted vertical grain rods and a raking auger 206 for raking the harvested grain rods.

A cab 207 is provided on the right side of the front portion of the travel machine body. A cab 207 is provided with a driving portion 208 on which a driver rides and a cabin 209 covering the driving portion 208. An engine room ER is provided below the driver portion 208. Engine compartment ER accommodates engine E, exhaust gas purification device 210, cooling fan 211, and radiator 212 (see fig. 17). A threshing device 213 for threshing the harvested straw is provided behind the harvesting unit 203. A feeder 214 for feeding the harvested straw to the threshing device 213 is provided across the harvesting unit 203 and the threshing device 213. A grain storage box 215 for storing grains obtained by the threshing process is provided in parallel with the threshing device 213 in the lateral direction. The grain storage box 215 is configured to be swingable open and closed about an axis Z1 extending in the vertical direction across the working position and the maintenance position. A fuel tank 216 is provided between the rear of the threshing device 213 and the rear of the grain storage box 215.

A grain discharging device 217 (an example of a "working device") is provided to discharge the grains in the grain storage tank 215 to the outside. The grain discharging device 217 is provided with a vertical conveying part 218 for conveying grains in the grain storage box 215 upward, and a horizontal conveying part 219 for conveying grains from the vertical conveying part 218 to the outside of the machine body. The grain discharging device 217 is disposed so as to be rotatable around an axial center Z1 of the longitudinal conveying section 218. The lower end of the longitudinal conveyor 218 is connected to the bottom of the grain storage box 215. The end of the horizontal transport section 219 on the side of the vertical transport section 218 is connected to the upper end of the vertical transport section 218, and is supported by the upper end of the vertical transport section 218 so as to be vertically swingable.

A transmission T for shifting the power from an engine E is provided. The transmission T is provided with a hydraulic continuously variable transmission (HST)220 as a main transmission device and a transmission case 221 (see fig. 14). The transmission 221 houses a gear type sub-transmission and the like.

[ threshing device ]

As shown in fig. 13, a threshing chamber 222 is formed in an upper portion of the threshing device 213. The threshing chamber 222 is provided with a threshing cylinder 223 so as to be rotatable around a rotation axis Y1 extending in the front-rear direction of the machine body. A receiving net 224 is provided below the threshing cylinder 223. A swing sorting device 225 for performing swing sorting of objects to be sorted, a wind turbine 226 for blowing sorting air to the swing sorting device 225, a primary recovery unit 227 for recovering grains (e.g., singulated grains) of a primary processed object, and a secondary recovery unit 228 for recovering grains (e.g., branched grains) of a secondary processed object are provided below the threshing device 213. The primary recovery unit 227 is provided with a primary screw conveyor 229 for conveying grains of the primary processed product to the right. The secondary recovery unit 228 is provided with a secondary screw conveyor 230 for conveying grains of the secondary processed product to the right. The primary auger 229 and the secondary auger 230 are disposed at an interval in the front-rear direction of the body. The primary auger 229 and the secondary auger 230 are configured to be detachable from the right side portion of the threshing device 213, and the primary auger 229 and the secondary auger 230 can be pulled out from the right side portion of the threshing device 213 in a state where the grain storage box 215 is located at the maintenance position. A vertical conveying device 231 for conveying the grains of the primary processed product from the primary screw conveyor 229 upward toward the grain storage box 215 and a secondary returning device 232 for returning the grains of the secondary processed product from the secondary screw conveyor 230 to the front of the swing sorting device 225 are provided at the right side portion of the threshing device 213.

[ Power Transmission Path ]

As shown in fig. 14, a travel transmission mechanism 234 that transmits the driving force of the engine E to the HST220 via a belt is provided. The driving force of the engine E is transmitted to the crawler travel device 202 after being shifted by the HST220 and the subtransmission device.

A grain discharging transmission mechanism 236 is provided for transmitting the driving force of the engine E to the grain discharging device 217 via a transmission belt 235. A grain discharging clutch 237 (an example of a "clutch") for turning on and off the power transmission from the grain discharging transmission mechanism 236 to the grain discharging device 217 is provided. The grain discharge clutch 237 is constituted by a belt-tension type clutch. As shown in fig. 12, the grain discharge clutch 237 is disposed at the center of the machine body. As shown in fig. 12 and 22, the grain discharge clutch 237 is disposed between the driver 208 and the grain storage box 215.

A threshing transmission mechanism 239 is provided to transmit the driving force of the engine E to the wind turbine 226 via a transmission belt 238. A threshing clutch 240 for turning on and off the power transmission from the threshing transmission mechanism 239 to the wind turbine 226 is provided. The threshing clutch 240 is constituted by a belt-tensioning clutch.

A belt transmission mechanism 241 for transmitting the power of the windmill 226 to the primary auger 229 and the secondary auger 230 is provided. A bevel gear transmission 242 is provided for transmitting the power of the primary screw conveyor 229 to the longitudinal conveyor 231. A chain transmission 243 and a bevel gear transmission 244 for transmitting the power of the secondary screw conveyor 230 to the secondary returning device 232 are provided.

A belt transmission mechanism 246 for transmitting the power of the wind turbine 226 to the relay shaft 245 is provided. A bevel gear transmission 248 for transmitting the power of the relay shaft 245 to the threshing cylinder 223 and the relay shaft 247 is provided. A harvesting transmission 250 is provided that transmits the power of the relay shaft 245 to the feeder 214 via a transmission belt 249. A harvest clutch 251 is provided for turning on and off the power transmission from the harvest transmission mechanism 250 to the feeder 214. The harvesting clutch 251 is constituted by a belt-tensioned clutch.

[ driver's cabin ]

As shown in fig. 15 to 18, the vehicle 209 includes: a roof 252, a front window 253, side glass 254, a rear window 255, and a landing door 256. The cab 208 is provided with a cab seat 257, a front panel 258, side panels 259, and a grain discharge operation unit 260. A steering rod 261 and an instrument panel 262 are provided on the front panel 258. The steering lever 261 performs operations such as steering of the traveling machine body and raising and lowering of the harvesting unit 203.

A front cover 263 is provided in front of the cab 208. A front pillar 264 is provided in the front of the left side portion of the cab 208. A rear pillar 265 is provided at the rear of the left side portion of the cab 208. A lower frame 266 extending in the body front-rear direction is provided across the front pillar 264 and the rear pillar 265. The front end portion of the lower frame 266 is supported by the front pillar 264, and the rear end portion of the lower frame 266 is supported by the rear pillar 265. The lower frame 266 is located below the exhaust gas purification device 210.

The grain discharge operation unit 260 is provided on the rear right side of the driver seat 257. The grain discharging operation unit 260 includes a rotation operation unit for rotating the grain discharging device 217 and a lifting operation unit for lifting the grain discharging device 217 (the horizontal conveying unit 219).

[ exhaust gas purification device ]

The exhaust gas purification device 210 performs purification processing of the exhaust gas of the engine E by a DPF (diesel particulate filter). Exhaust gas purifying device 210 is provided below side plate 259 and above engine E in a posture in which the longitudinal direction thereof is along the front-rear direction of the machine body. Exhaust gas purification device 210 is provided below side plate 259 in a state projecting leftward from left end 259a of side plate 259. The exhaust gas purification device 210 is entirely covered with the top plate 267 from above, not only by the portion protruding from the exhaust gas purification device 210. The exhaust gas purification device 210 is mounted and supported on the upper portion of the engine E. The exhaust gas purification device 210 is coupled to the engine E via front and rear supports 268.

[ exhaust pipes ]

As shown in fig. 22 to 24, an exhaust pipe 269 is provided to discharge the exhaust gas purified by the exhaust gas purifying device 210. The exhaust pipe 269 is drawn out leftward from the rear portion of the left side surface of the outer peripheral portion of the exhaust gas purification apparatus 210, and extends rearward and upward. The air vent tube 269 is provided so as to pass through between the threshing device 213 and the grain storage box 215, specifically, through the clutch switching device 270 and above the fuel tank 216, which will be described later. An outside air introducing portion 276 for introducing outside air into the exhaust pipe 269 in order to lower the exhaust temperature is formed in the exhaust pipe 269, for example, between an exhaust upstream end portion 271 connected to the exhaust purification device 210 and a portion 272 on the exhaust downstream side of the exhaust upstream end portion 271. A front table 277 and a rear table 278 are provided above the exhaust pipe 269 between the cab 207 and the grain storage tank 215 and the threshing device 213.

[ side panels ]

As shown in fig. 15 to 18, side panel 259 is provided on the left side of driver seat 257. The side panel 259 is provided with a main shift lever 279, a sub shift lever 280, and a clutch switch lever 281 (an example of a "first manual operation member"). A position detection sensor 282 for detecting the operation position of the clutch switching lever 281 is provided below the side plate 259 and above the exhaust gas purification apparatus 210.

The main shift lever 279 is a swing back and forth operation lever that shifts the HST 220. The sub-shift lever 280 is a forward-backward swing operation type lever that performs a shifting operation of the sub-transmission device. The main shift lever 279 and the secondary shift lever 280 are laterally side-by-side such that the main shift lever 279 is on the left side and the secondary shift lever 280 is on the right side. That is, the main shift lever 279 is located on the opposite side of the rider seat 257 in the body right-left direction with respect to the sub-shift lever 280. Here, when the projection length of the portion of the main shift lever 279 that projects from the upper surface of the side panel 259 is L1 and the projection length of the portion of the sub shift lever 280 that projects from the upper surface of the side panel 259 is L2, the main shift lever 279 is arranged such that the projection length L1 is longer than the projection length L2.

An upper frame 283 is provided to support the side panels 259. The upper frame 283 is provided with a top plate 267. The top plate 267 is provided between the exhaust gas purification device 210 and the position detection sensor 282, vertically partitions the space between the exhaust gas purification device 210 and the position detection sensor 282, and covers the entire exhaust gas purification device 210 from above, not only the portion protruding from the exhaust gas purification device 210. Top panel 267 spans the front and rear ends of side panel 259 and the left and right sides of side panel 259.

A front cover 335 that covers exhaust gas purification apparatus 210 from the front side is provided in a space below side plate 259. The space below side panel 259 is partitioned by front cover 335 into a front space and a rear space (a space on the side where exhaust gas purification device 210 is located). The upper end of the front cover 335 is supported by the top plate 267 via the support 336.

[ shade ]

Cover 284 is provided to cover a space below side plate 259 from the left side with respect to exhaust gas purification device 210. Cover 284 extends in the front-rear direction of the body such that a front end of cover 284 is located forward of a front end of side panel 259 and a rear end of cover 284 is located rearward of a rear end of side panel 259. A notch 284a is formed in the rear portion of the cover 284 so as not to interfere with the exhaust upstream end 271 of the exhaust pipe 269. The cover 284 has a raised portion 284b raised to the left side with respect to the other portions. That is, in a plan view, a portion (the swelling portion 284b) of the cover 284 located laterally adjacent to the exhaust gas purification device 210 swells to the left side of the other portions.

The hood 284 is supported by the upper frame 283 and the lower frame 266, and is configured to be detachably attached to the upper frame 283 and the lower frame 266. The portion of the upper frame 283 corresponding to the ridge 284b protrudes leftward from the other portions. The portion of the lower frame 266 corresponding to the ridge 284b protrudes leftward from the other portion. The upper portion of cover 284 is detachably fixed to vertical wall 283a of upper frame 283 by bolts 285. The lower frame 266 is provided with a support 286 extending upward from the lower frame 266. The lower portion of the hood 284 is removably secured to a support 286 by bolts 287.

[ longitudinal frame ]

A vertical frame 288 extending in the vertical direction across the upper frame 283 and the lower frame 266 is provided. The longitudinal frame 288 is positioned on the left side of the hood 284 and is provided in a state of overlapping the hood 284 when viewed from the side. That is, the vertical frame 288 is positioned on the left side of the exhaust gas purification device 210 and is provided in a state of overlapping the exhaust gas purification device 210 in a side view. The longitudinal frame 288 is supported by the upper frame 283 and the lower frame 266, and is configured to be detachably attached to the upper frame 283 and the lower frame 266. The upper end of the vertical frame 288 is detachably fixed to the vertical wall 283a of the upper frame 283 by a bolt 285 together with the upper part of the cover 284. The lower frame 266 is provided with a support member 289 extending downward from the lower frame 266. The lower end of the vertical frame 288 protrudes downward from the lower end of the lower frame 266, and is detachably fixed to the support 289 by a bolt 290.

[ Clutch switching lever ]

As shown in fig. 19 to 21, the clutch switching lever 281 is a lever of a forward/backward swing operation type, and is a single lever for switching the grain discharging clutch 237, the harvesting clutch 251, and the threshing clutch 240 between the on state and the off state. The clutch switch lever 281 is configured to be positionally changeable among a first operation position O1, a second operation position O2, and a third operation position O3. The first operating position O1 is an operating position in which both the harvest clutch 251 and the threshing clutch 240 are in a connected state and the grain discharge clutch 237 is in a disconnected state. The second operating position O2 is an operating position in which the harvest clutch 251 is in the off state, the threshing clutch 240 is in the on state, and the grain discharge clutch 237 is in the off state. The third operating position O3 is an operating position in which both the harvest clutch 251 and the threshing clutch 240 are in the off state, and the grain discharge clutch 237 is in the off state. The clutch switch lever 281 is provided rearward of the main shift lever 279.

The clutch switching lever 281 is arranged to be swingable back and forth around a swing axis X1 extending in the left-right direction of the machine body. The clutch switching lever 281 is provided with: a handle 291, a handle-side lever body 292, a spindle-side lever body 293, and a lever spindle 294. The handle-side lever body 292 is connected to the support shaft-side lever body 293 so as to be swingable in the left and right directions via a hinge 295 with a spring (not shown). The spring applies force to the handle-side lever 292 in a swinging manner to the left. The handle-side rod body 292 is provided with a stopper 292a that abuts against the spindle-side rod body 293 to restrict the handle-side rod body 292 from swinging leftward.

[ Oscillating support ]

A swing support portion 296 is provided for supporting the clutch switching lever 281 so that the clutch switching lever 281 can swing about a swing shaft center X1. The swing support 296 also supports a position detection sensor 282. Swing support portion 296 is placed and supported on the upper surface portion of top plate 267 inside side panel 259. The swing support 296 is formed of a substantially L-shaped plate material. The swing support portion 296 is provided with a base portion 297 extending along the top plate 267 and a vertical wall portion 298 perpendicular or substantially perpendicular to the top plate 267. The base 297 is fixed to the top plate 267 by bolts 299. A boss portion 300 through which the lever spindle 294 is inserted is provided in the vertical wall portion 298. A mounting portion 301 to which the position detection sensor 282 is mounted is provided on the left side of the vertical wall portion 298.

[ guide portion ]

Is provided with: the lever guide 303 has a guide portion 302 for guiding the clutch switch lever 281. The lever guide 303 is provided so as to straddle the swing support 296 in the right and left direction. Leg portions 303a are formed at both left and right end portions of the lever guide 303. The leg 303a is fixed to the top plate 267 by a bolt 304. The guide portion 302 is provided in a portion of the lever guide 303 located above the swing support portion 296.

The guide portion 302 is provided with a linear portion 302a and an entrance portion 302 b. The straight portion 302a extends linearly in the swing operation direction (front-rear direction) of the clutch switch lever 281. In the linear portion 302a, the width B2 of the section on the first operation position O1 side is narrower than the width B1 of the section between the second operation position O2 and the third operation position O3.

The entering portion 302b is formed in a shape in which the clutch switch lever 281 enters in a direction (leftward direction) intersecting the swing operation direction in a state of being connected to the straight portion 302 a. The entering portions 302b are provided at a position corresponding to the first operation position O1, a position corresponding to the second operation position O2, and a position corresponding to the third operation position O3, respectively. The handle-side lever body 292 is swung and biased by the spring toward the entering portion 302b in a state of entering the entering portion 302b, and thereby the clutch switching lever 281 is held in position at each operation position.

The clutch switch lever 281 is a lever of a forward-backward swing operation type as described above, and is configured to be operated to swing forward and backward along the straight line portion 302a after being preliminarily operated. Specifically, the clutch switch lever 281 is configured to: after the operation of disengaging the handle-side rod body 292 from the entering portion 302b against the biasing force of the spring as the preliminary operation is performed, the operation can be performed to swing back and forth along the linear portion 302 a. Thus, while the clutch switch lever 281 is not able to be operated to swing back and forth along the straight portion 302a in the state where the clutch switch lever 281 is held in position at each operating position, the handle-side lever body 292 is operated to swing right against the urging force of the spring and disengaged from the entry portion 302b, so that the clutch switch lever 281 can be operated to swing back and forth along the straight portion 302 a.

Here, when the clutch switching lever 281 is switched from the third operation position O3 side to the first operation position O1 in a state where the grip-side lever body 292 is operated to swing to the right side, the grip-side lever body 292 abuts on the end portion 302c of the guide portion 302 to prevent the clutch switching lever 281 from swinging to the front side. Therefore, in order to release the contact with the end portion 302c of the guide portion 302, the clutch switch lever 281 needs to be operated to swing slightly to the left side to swing the handle-side lever body 292 to the front side.

[ Clutch switching device ]

As shown in fig. 22 to 27, a clutch switching device 270 is provided for switching the harvesting clutch 251, the threshing clutch 240, and the grain discharging clutch 237 to an on state and an off state at appropriate timings. The clutch switching device 270 is provided between the threshing device 213 and the grain storage tank 215 on the rear side of the longitudinal conveyor 231. The clutch switching device 270 is provided between the primary auger 229 and the secondary auger 230 in the front-rear direction of the body. The clutch switching device 270 is provided below the lower narrow portion 215a of the grain storage tank 215. In other words, the clutch switching device 270 is disposed in a state of overlapping with the grain storage tank 215 in a plan view. The clutch switching device 270 is provided in a state of overlapping with the base of the secondary returning device 232 in a plan view. A fuel tank 216 is provided between the threshing device 213 and the grain storage box 215 behind the clutch switching device 270.

The body frame 201 is provided with a main frame 201A extending in the body front-rear direction and a lateral frame 201B extending in the body left-right direction in a state of intersecting the main frame 201A. The clutch switching device 270 is supported at an intersection where the main frame 201A and the lateral frame 201B intersect. A platen 305 is provided at the intersection, and the clutch switching device 270 is detachably mounted on and supported by the platen 305.

The clutch switching device 270 includes: a housing 306, a first arm 307A, a second arm 307B, a third arm 307C, a first cam 308A, a second cam 308B, a third cam 308C, an electric motor M (an example of an "actuator"), a first wire rope 309A, a second wire rope 309B (an example of an "operating rope" of a "first coupling mechanism"), a third wire rope 309C, and an upper cover 310. The first arm 307A, the first cam 308A, and the first wire rope 309A correspond to the harvesting clutch 251. The second arm 307B, the second cam 308B, and the second wire rope 309B correspond to the grain discharging clutch 237. The third arm 307C, the third cam 308C, and the third wire rope 309C correspond to the threshing clutch 240.

The housing 306 is configured by a square box-shaped member that houses the first arm 307A, the second arm 307B, and the third arm 307C, and the first cam 308A, the second cam 308B, and the third cam 308C and that opens upward. The housing 306 is provided with a bottom 311 and a side wall 312.

In the bottom portion 311, a cleaning opening 311a is formed in a portion (a front portion of the bottom portion 311) on the opposite side of the first arm 307A, the second arm 307B, and the third arm 307C with respect to the first cam 308A, the second cam 308B, and the third cam 308C. The cleaning opening 311a is a circular opening. A bottom cover 313 for opening and closing the cleaning port 311a is provided. A notch 305a is formed in a portion of the platen 305 corresponding to the bottom cover 313 so as not to interfere with the bottom cover 313.

The side wall 312 is provided with: front wall portion 314, rear wall portion 315, left side wall portion 316, and right side wall portion 317. A fitting portion 318 for fitting the housing 306 to the platen 305 is provided on each of the lateral outer side of the left side wall portion 316 and the lateral outer side of the right side wall portion 317. The mounting portion 318 is detachably fixed to the platen 305 by bolts 319. A nut 320 (weld nut) for a bolt 319 is provided on the back surface of the platen 305.

The first arm 307A, the second arm 307B, and the third arm 307C are swingable around the same swing axis X2 extending in the left-right direction of the machine body, and are arranged side by side in the direction of the swing axis X2. The first arm 307A, the second arm 307B, and the third arm 307C are relatively rotatably supported by an arm support shaft 321. The arm support shaft 321 is provided so as to straddle wall portions (the left side wall portion 316 and the right side wall portion 317) of the side walls 312 that face each other in the direction of the swing axis X2. The lower ends of the first arm 307A, the second arm 307B, and the third arm 307C are coupled to the arm support shaft 321. The arm support shaft 321 is provided with stoppers 322 for positioning the first arm 307A, the second arm 307B, and the third arm 307C at initial positions (wire drawing positions), respectively. The arm support shaft 321 and the stopper 322 are coupled via a support 323. In a side view (see fig. 26), the first arm 307A, the second arm 307B, and the third arm 307C at the wire drawing position are in an inclined posture in which they are slightly tilted forward, and thus the stroke S spanning the wire drawing position and the wire end position can be increased, and the wire drawing device can be used in a variety of machines.

The first arm 307A, the second arm 307B, and the third arm 307C are each configured by a member having a substantially U-shaped cross section. The upper ends of the first arm 307A, the second arm 307B, and the third arm 307C protrude upward from the case 306. A first roller 323A contactable with the first cam 308A is provided in the vertical middle portion of the first arm 307A. A second roller 323B contactable with the second cam 308B is provided in the vertical middle portion of the second arm 307B. A third roller 323C that can contact the third cam 308C is provided in the vertical middle portion of the third arm 307C.

The end of the first wire rope 309A on the first arm 307A side is connected to the upper end of the first arm 307A. An adjustment spring (not shown) is provided at an end of the core wire of the first wire rope 309A on the reaping clutch 251 side. No adjustment spring is provided between the upper end of the first arm 307A and the end of the first wire rope 309A on the first arm 307A side of the core wire. The second wire rope 309B is connected to the second arm 307B side end of the core wire of the second arm 307B at the upper end of the second arm 307B. No adjustment spring is provided between the upper end of the second arm 307B and the end of the second wire rope 309B on the second arm 307B side of the core wire. The end of the third wire rope 309C on the third arm 307C side is connected to the upper end of the third arm 307C. An adjustment spring (not shown) is provided at the end of the core wire of the third wire rope 309C on the threshing clutch 240 side. No adjusting spring is provided between the upper end of the third arm 307C and the end of the third wire rope 309C on the third arm 307C side of the core wire.

The first arm 307A, the second arm 307B, and the third arm 307C are supported by an arm support shaft 321. The first arm 307A and the third arm 307C sandwich the second arm 307B from both sides in the direction of the swing axis X2. That is, the first arm 307A is supported by a portion closer to the left side wall portion 316 in the arm fulcrum 321 than the second arm 307B, and the third arm 307C is supported by a portion closer to the right side wall portion 317 in the arm fulcrum 321 than the second arm 307B.

Here, normally, the force acting on the first arm 307A when the first wire rope 309A is pulled by the first arm 307A corresponding to the harvest clutch 251, and the force acting on the third arm 307C when the third wire rope 309C is pulled by the third arm 307C corresponding to the threshing clutch 240 are larger than the force acting on the second arm 307B when the second wire rope 309B is pulled by the second arm 307B corresponding to the grain discharge clutch 237. That is, the arm of the first arm 307A, the second arm 307B, and the third arm 307C, which generates a larger force when the first wire rope 309A, the second wire rope 309B, and the third wire rope 309C are pulled, is supported by a portion of the arm fulcrum 321 closer to the left side wall 316 or the right side wall 317.

The first cam 308A, the second cam 308B, and the third cam 308C are rotatable about the same rotation axis X3 extending in the left-right direction of the machine body in parallel with the swing axis X2, and are provided in a state of being aligned in the rotation axis X3 direction so as to correspond to the first arm 307A, the second arm 307B, and the third arm 307C. The first cam 308A, the second cam 308B, and the third cam 308C are supported by a cam support shaft 324 so as to be relatively non-rotatable. The cam fulcrum 324 is provided so as to straddle the left side wall portion 316 and the right side wall portion 317. Bearings 325 for rotatably supporting the cam support shaft 324 are provided on the left side wall portion 316 and the right side wall portion 317, respectively. The first cam 308A, the second cam 308B, and the third cam 308C are connected to a cam support shaft 324 via a key 326. A gear portion is formed on the outer peripheral portion of the first cam 308A.

A hole 308Aa is formed in the first cam 308A, a hole 308Ba is formed in the second cam 308B, and a hole 308Ca is formed in the third cam 308C. By attaching the first cam 308A, the second cam 308B, and the third cam 308C to the cam support shaft 324 so that the positions of the hole 308Aa, the hole 308Ba, and the hole 308Ca around the rotation axis X3 coincide with each other (in other words, so that the hole 308Aa, the hole 308Ba, and the hole 308Ca overlap with each other when viewed from the rotation axis X3 direction), it is possible to prevent erroneous attachment of the first cam 308A, the second cam 308B, and the third cam 308C to the cam support shaft 324.

A rotation angle detection sensor 327 is provided to detect the rotation angle of the first cam 308A, the second cam 308B, and the third cam 308C. A mounting groove 324a into which a rotation angle detection sensor 327 is mounted is formed at the right end portion of the cam support shaft 324. The rotation angle detection sensor 327 is supported by the right side wall 317. The right side wall portion 317 is provided with a fitting portion 328 to which a rotation angle detection sensor 327 is fitted.

Here, when the fitting portion 328 is provided on the right side wall portion 317 as described above, it is necessary to fit the cam fulcrum 324 to the case 306 with the fitting groove 324a on the right side. When the cam support shaft 324 is erroneously mounted to the housing 306 with the mounting groove 324a on the left side, the rotational angle detection sensor 327 cannot be mounted to the cam support shaft 324, and it is noticed that the cam support shaft 324 is mounted upside down.

A first wire rope 309A couples the first arm 307A and the harvesting clutch 251, disposed in a manner straddling the first arm 307A and the harvesting clutch 251. The first wire rope 309A extends forward from the upper end of the first arm 307A, and extends forward in the horizontal direction while passing above the first cam 308A. A second wire rope 309B couples the second arm 307B and the grain discharging clutch 237, and is provided so as to straddle the second arm 307B and the grain discharging clutch 237. The second wire rope 309B extends forward from the upper end of the second arm 307B, and extends forward in the horizontal direction while passing above the second cam 308B. A third wire rope 309C couples the third arm 307C and the threshing clutch 240, and is provided astride the third arm 307C and the threshing clutch 240. The third wire 309C extends forward from the upper end of the third arm 307C, and extends forward in the horizontal direction while passing above the third cam 308C.

A support portion 329 for supporting the first wire rope 309A, the second wire rope 309B, and the third wire rope 309C is provided. The support portion 329 supports the end portion of the outer wire of the first wire rope 309A on the first arm 307A side, the end portion of the outer wire of the second wire rope 309B on the second arm 307B side, and the end portion of the outer wire of the third wire rope 309C on the third arm 307C side. The support portion 329 is provided on the upper surface of the side portion (the front portion of the side wall 312) of the housing 306 on the side opposite to the side on which the first, second, and third cams 308A, 308B, and 308C are provided with the first, second, and third arms 307A, 307B, and 307C. The support portion 329 is formed of a substantially L-shaped plate material.

The upper cover 310 opens and closes a portion of the case 306 that opens upward, and is formed of a square box-shaped member that opens downward and forward. The first, second, and third wire cables 309A, 309B, and 309C pass through the portions of the upper cover 310 that are open to the front. A portion of the upper cover 310 that opens forward is closed from the front by the support 329. The upper cover 310 is fixed to the left and right side walls 316 and 317 by bolts 330 at the rear lower portion. Engaging protrusions 310a that engage with the corner portions of the support 329 are formed on both left and right side portions of the front lower portion of the upper cover 310.

The electric motor M rotationally drives the first cam 308A, the second cam 308B, and the third cam 308C. The output shaft Ma of the electric motor M is provided with a planetary gear 331 that meshes with the gear portion of the first cam 308A. The rotational power of the electric motor M is transmitted from the output shaft Ma to the gear portion of the first cam 308A via the planetary gear 331, whereby the first cam 308A, the second cam 308B, and the third cam 308C are rotationally driven.

The electric motor M is supported by the left side wall portion 316. The electric motor M is fixed to the left side wall portion 316 by bolts. The relay 332 for the electric motor M is supported by the wall portions (front wall portions 314) of the side walls 312 on the extending direction sides of the first wire rope 309A, the second wire rope 309B, and the third wire rope 309C. The relay 332 is fixed to the front wall portion 314 by bolts. The control device 333 for the cooling fan 211 is supported by a wall portion (right side wall portion 317) of the side wall 312 that is different from the wall portion on which the relay 332 is supported. The control device 333 is fixed to the right side wall portion 317 by bolts.

As shown in fig. 28, the control block is provided with a control device 334 for controlling the driving of the electric motor M. To the control device 334 are connected: a position detection sensor 282, a grain discharge operation unit 260, a rotation angle detection sensor 327, and an electric motor M. The control device 334 receives a detection value of the input position detection sensor 282, a clutch switching operation command of the grain discharge operation unit 260, and a detection value of the rotation angle detection sensor 327. The control device 334 controls the driving of the electric motor M based on the detection value of the position detection sensor 282. That is, the electric motor M operates in accordance with an operation input to the clutch switch lever 281.

The rotational positions (the neutral position N, the first rotational position R1, the second rotational position R2, and the third rotational position R3) of the first cam 308A, the second cam 308B, and the third cam 308C are shown in fig. 29. The first cam 308A corresponding to the harvesting clutch 251 and the third cam 308C corresponding to the threshing clutch 240 are rotationally driven from the neutral position N to one side (front side) about the rotational axis X3, and the second cam 308B corresponding to the grain discharging clutch 237 is rotationally driven from the neutral position N to the other side (rear side) about the rotational axis X3. The first cam 308A, the second cam 308B, and the third cam 308C are rotationally driven by the electric motor M, and thereby the first arm 307A, the second arm 307B, and the third arm 307C swing rearward around the swing axis X2 by the action of the first cam 308A, the second cam 308B, and the third cam 308C (the cam action on the first roller 323A, the second roller 323B, and the third roller 323C), respectively, and the first arm 307A, the second arm 307B, and the third arm 307C pull the first wire rope 309A, the second wire rope 309B, and the third wire rope 309C, respectively, thereby switching the harvesting clutch 251, the threshing clutch 240, and the grain discharging clutch 237 to the connected state and the disconnected state at an appropriate timing.

Specifically, as shown in fig. 30, in the neutral position N, the first cam 308A, the second cam 308B, and the third cam 308C do not cam the first arm 307A, the second arm 307B, and the third arm 307C, respectively. Accordingly, the harvest clutch 251, the grain discharge clutch 237, and the threshing clutch 240 are in an off state.

In the first rotational position R1, the third cam 308C cams the third arm 307C, and the first and second cams 308A, 308B do not cam the first and second arms 307A, 307B, respectively. Therefore, the threshing clutch 240 is in a connected state, and the harvesting clutch 251 and the grain discharging clutch 237 are in a disconnected state.

In the second rotational position R2, the first and third cams 308A, 308C respectively cam the first and third arms 307A, 307C, and the second cam 308B does not cam the second arm 307B. Therefore, the harvest clutch 251 and the threshing clutch 240 are in a connected state, and the grain discharge clutch 237 is in a disconnected state.

In the third rotational position R3, the second cam 308B cams the second arm 307B, and the first and third cams 308A, 308C do not cam the first and third arms 307A, 307C, respectively. Therefore, the grain discharging clutch 237 is in a connected state, and the harvesting clutch 251 and the threshing clutch 240 are in a disconnected state.

[ first coupling mechanism, second coupling mechanism ]

As shown in fig. 31, the grain discharging clutch 237 is a belt-tension type clutch having a tension pulley 237 a. The grain discharge clutch 237 includes a spring 237b that supports a tension pulley 237a in a suspended manner. The lower end of the spring 237b is connected to an arm 237c supporting the tension pulley 237 a. An end portion of the spring 237B opposite to the tension sheave 237a, that is, an upper end portion 237d (an example of the "operation portion") is connected to an end portion 309Ba of the second wire rope 309B. Specifically, the end 237d of the spring 237B is formed in a U shape, and the U-shaped portion is inserted into the hole of the end 309Ba of the second wire rope 309B. That is, the end 237d of the spring 237B and the end 309Ba of the second wire rope 309B are detachable.

The end 309Bb of the second wire rope 309B on the grain discharge clutch 237 side in the case is supported by the support 340. The support 340 is supported by the frame 208a of the cab 208. The support 340 is located on the upper side than the spring 237b of the grain discharge clutch 237.

When the clutch switch lever 281 is operated to the third operation position O3, the control device 334 controls the electric motor M to move the first cam 308A, the second cam 308B, and the third cam 308C to the third rotation position R3. In the third rotational position R3, the second cam 308B cams the second roller 323B, the second arm 307B swings rearward about the swing shaft center X2, and the second arm 307B pulls the second wire rope 309B. The upper end 237d of the spring 237B is pulled upward by the second wire rope 309B, and the tension pulley 237a moves upward. This transmits the power of the engine E to the grain discharging device 217. That is, the grain discharging clutch 237 is turned on/off in accordance with the operation of the end 237d (operation portion) of the spring 237b opposite to the tension pulley 237a, and transmits power to the grain discharging device 217. A first coupling mechanism G is disposed that couples the electric motor M and the end 237d (operating portion) of the spring 237B via a second cam 308B, a second roller 323B, a second arm 307B, and a second wire rope 309B.

As shown in fig. 22, 31, 32, and 34, the whole-feed combine harvester according to the present embodiment includes a second coupling mechanism H in addition to the first coupling mechanism G. The second coupling mechanism H couples the second manual operation element J and the operating portion (the end portion 237d of the spring 237 b) of the grain discharge clutch 237. The second coupling mechanism H is configured to include a fourth wire rope 350 (an example of an "operating rope").

As shown in fig. 31, an end 350a of the core wire of the fourth wire rope 350 on the grain discharge clutch 237 side is positioned forward of an end 309Ba of the second wire rope 309B. The end 350B of the case of the fourth wire rope 350 on the grain discharge clutch 237 side is positioned in front of the end 309Bb of the case of the second wire rope 309B, and is supported by the support 340.

As shown in fig. 32 and 33, an end portion 350c (an example of an end portion on the second artificial operation element side) of the core wire of the fourth wire rope 350 on the opposite side to the grain discharge clutch 237 side is supported by the rear surface of the frame 208b of the steering unit 208. The frame 208b is a portion of the frame of the steering unit 208 on the outer peripheral side of the body. That is, the end 350c of the fourth wire rope 350 is disposed on the outer peripheral side of the machine body. The frame 208b openably and closably supports the dust cover 355. The dust cover 355 blocks the opening of the engine room ER.

Specifically, a head pin 357 is inserted from the rear into a hole of the end 350c and a hole of the frame 208b to fix the end 350c of the fourth wire rope 350, and a lock pin 358 is inserted into a hole of the tip end of the head pin 357 in the engine room ER. An end 350d of the outer case of the fourth wire rope 350 on the opposite side to the grain discharging clutch 237 side is supported by a support 208c supported on the rear surface of the frame 208 b.

As shown in fig. 31 and 34, the first coupling mechanism G and the second coupling mechanism H are disposed to be replaceably engaged with an operating portion (an end portion 237d of the spring 237 b) of the cereal grain discharge clutch 237. In the state shown in fig. 31, the U-shaped portion of the end 237d of the spring 237B is inserted into the hole of the end 309Ba of the second wire rope 309B. The end 350a of the fourth wire rope 350 is not connected to the spring 237 b. In this state, the first coupling mechanism G couples the electric motor M and the operating portion of the grain discharge clutch 237.

When the clutch switching device 270 and the second wire rope 309B fail and the grain discharging device 217 cannot be operated by the operation of the clutch switching lever 281, the driver can replace the first coupling mechanism G with the second coupling mechanism H engaged with the operating portion (the end portion 237d of the spring 237B) of the grain discharging clutch 237 and operate the grain discharging device 217 using the second coupling mechanism H.

First, the driver removes the end 309Ba of the second wire rope 309B from the end 237d of the spring 237B. Then, the driver inserts the U-shaped portion of the end portion 237d of the spring 237b into the hole of the end portion 350a of the fourth wire rope 350 (the state shown in fig. 34). Next, the driver opens dust cover 355 and removes lock pin 358 in engine room ER from headed pin 357. Then, the end 350c of the fourth wire rope 350 is detached from the frame 208 b. When the driver pulls the end 350c of the fourth wire rope 350, the upper end 237d of the spring 237b is pulled upward, and the tension pulley 237a moves upward. In this way, the power of the engine E is transmitted to the grain discharging device 217. That is, in the state shown in fig. 34, the second coupling mechanism H couples the end 350c of the fourth wire rope 350 and the end 237d of the spring 237b of the grain discharge clutch 237. In the present embodiment, the end portion 350c of the core wire of the fourth wire rope 350 corresponds to the second human operator J. That is, in the present embodiment, the second human operator J and the second coupling mechanism H are disposed as an integral member.

[ Another embodiment ]

(1) In the above embodiment, the end portion 350c (second manual operation element J) of the fourth wire rope 350 is disposed on the outer peripheral side of the machine body. However, the end portion 350c of the fourth wire rope 350 may be disposed at another place. For example, as shown in fig. 35, an end portion 350c of the fourth wire rope 350 may be disposed at the steering portion 208. The end 350c of the fourth wire rope 350 is supported by a side plate 259 disposed on the opposite side of the cab 208d in the machine body left-right direction (on the left of the cab 208 d) in the cab 208.

Specifically, the fourth wire rope 350 extends upward from the stay 340 and is drawn into the cab 208 from behind the cab seat 257. A fourth wire rope 350 extends forward from the rear of side panel 259 at the upper surface of side panel 259. An end 350d of the housing of the fourth wire rope 350 is supported by a support 259b provided on the upper surface of the side panel 259. An end 350c of the core wire of the fourth wire rope 350 is supported by a pin 259c provided upright on the upper surface of the side plate 259. In detail, the hole of the end portion 350c passes through the pin 259 c.

When the clutch switching device 270 and the second wire rope 209B fail and the grain discharge device 217 cannot be operated by the operation of the clutch switching lever 281, the driver can operate the grain discharge device 217 using the fourth wire rope 350 disposed in the driver 208. First, the driver replaces the first coupling mechanism G with the second coupling mechanism H engaged with the operating portion (the end portion 237d of the spring 237 b) of the grain discharge clutch 237 in the same manner as in the above embodiment. Next, the driver removes end 350c from pin 259c of side panel 259 and pulls it. In this way, as in the above-described embodiment, the upper end 237d of the spring 237b is pulled upward, the tension pulley 237a moves upward, and the power of the engine E is transmitted to the grain discharging device 217

(2) In the above embodiment, as shown in fig. 32, the belt 235, the pulley 236a, and the like of the grain discharge transmission mechanism 236 are disposed on the left side of the drive box 236 b. A support 237e that supports an arm 237c of the tension pulley 237a is disposed on the left side of the pulley 236 a. The driving box 236b is a mechanism for transmitting power to a screw conveyor (not shown) of the grain discharging device 217 disposed at a lower portion of the grain storage box 215.

In the present embodiment, as shown in fig. 35, the belt 235, the pulley 236a, and the like of the grain discharge transmission mechanism 236 are disposed on the right side of the drive box 236 b. As shown in fig. 36, a support 237e that supports an arm 237c of the tension pulley 237a is disposed below the drive case 236 b. By adopting such a configuration, the grain discharging clutch 237 can be compactly configured. Further, it is preferable to open and close the grain storage box 215 by swinging about the axis Z1 and to adjust the grain discharge transmission mechanism 236 and the grain discharge clutch 237.

(3) In the above embodiment, as shown in fig. 26, the lower ends of the arms (the first arm 307A, the second arm 307B, and the third arm 307C) and the lower ends of the cams (the first cam 308A, the second cam 308B, and the third cam 308C) of the clutch switching device 270 are close to the bottom 311 of the housing 306. In this way, when grass chips and the like enter the inside of the housing 306 and accumulate on the bottom portion 311, the operation of the clutch switching device 270 may be failed. In the above embodiment, the cleaning port 311a is formed in the bottom portion 311 of the housing 306 of the clutch switching device 270. Garbage such as grass clippings can be discharged from the housing 306 through the cleaning opening 311 a.

In the present embodiment, a large space SP is formed between the bottom 311 and the lower ends of the arms (the first arm 307A, the second arm 307B, and the third arm 307C) and the cams (the first cam 308A, the second cam 308B, and the third cam 308C). In other words, the distance between the lower ends of the arm and the cam and the bottom 311 is greater than the distance between the lower ends of the arm and the cam and the bottom 311 of the above embodiment, and is greater than half the width of the housing 306 in the left-right direction. Thus, even when dust such as grass clippings enters the inside of the housing 306, the clutch switching device 270 is prevented from malfunctioning. In the present embodiment, the cleaning port 311a is provided at a lower portion of the rear wall portion 315 of the housing 306.

(4) In the above embodiment, the second human operator J and the second coupling mechanism H are disposed as an integral member. However, the second human operator J and the second coupling mechanism H may be separate members. For example, the second human operator J may be a lever, knob, or the like that is separate from the second linkage H. That is, the end 350c of the core wire of the fourth wire rope 350 may be connected to a lever, a knob, or the like.

(5) In the above embodiment, the first coupling mechanism G and the second coupling mechanism H are connected to the grain discharging clutch 237. However, the first coupling mechanism G and the second coupling mechanism H may be connected to other clutches, for example, the threshing clutch 240 and the harvesting clutch 251.

(6) In the above embodiment, the first coupling mechanism G and the second coupling mechanism H are disposed so as to be replaceably engaged with the operation portion (the end portion 237d of the spring 237 b) of the cereal grain discharging clutch 237. Specifically, the end 309Ba of the second wire rope 309B and the end 350a of the fourth wire rope 350 are detachably attached to the end 237d of the spring 237B. The end 309Ba of the second wire rope 309B or the end 350a of the fourth wire rope 350 may be connected to the end 237d of the spring 237B, or the end 309Ba of the second wire rope 309B and the end 350a of the fourth wire rope 350 may be connected to the end 237d of the spring 237B. In other words, the connection can be made in a non-detachable manner.

(7) The present invention is applicable not only to all-feed type combine harvesters but also to various harvesters such as semi-feed type combine harvesters, carrot harvesters, corn harvesters and the like, paddy field working machines such as rice transplanters and the like, agricultural working machines, and various working machines such as earth working machines, construction machines and the like.

[ third embodiment ]

Embodiments of the present invention will be described based on the drawings. In the following description, the direction of arrow F is referred to as "front side of the body" (see fig. 38 and 39), the direction of arrow B is referred to as "rear side of the body" (see fig. 38 and 39), the direction of arrow L is referred to as "left side of the body" (see fig. 39), and the direction of arrow R is referred to as "right side of the body" (see fig. 39).

[ integral structure of combine harvester ]

A full-feed combine is shown in fig. 38 and 39. The combine is provided with a traveling body having a body frame 401 and a crawler traveling device 402, and a harvesting section 403 for harvesting and planting standing grain poles is provided in front of the traveling body. The harvesting section 403 is provided with: a raking reel 404 for raking the planting stalk, a harvesting knife 405 for cutting off the planting stalk and a raking auger 406 for raking the planting stalk.

A driver's cab 407 on which a driver rides is provided on the right side of the front portion of the travel machine body. The driver portion 407 is covered with a vehicle cabin 408. An engine room 409 is provided below the driver's part 407. The engine room 409 accommodates an engine 410, an exhaust gas treatment device 411, a cooling fan 412, a radiator 413, and the like. An air cleaner 414, a strainer 415, and the like for supplying combustion air to the engine 410 are provided above the engine room 409. A threshing device 416 for threshing the harvested straw is provided behind the harvesting unit 403. A feeder 417 for feeding the harvested straw to the threshing device 416 is provided so as to straddle the harvesting unit 403 and the threshing device 416. A grain storage box 418 for storing grains after threshing is provided in a state of being laterally juxtaposed to the threshing device 416.

A grain discharging device 419 is provided for discharging the grains in the grain storage tank 418 to the outside. The grain discharging device 419 is provided with a vertical conveying unit 420 of a screw conveyor type for conveying grains in the grain storage box 418 upward and a horizontal conveying unit 421 of a screw conveyor type for conveying grains from the vertical conveying unit 420 to the outside of the machine body. The grain discharging device 419 is disposed to be rotatable around an axial center Z1 of the longitudinal conveying unit 420.

The grain storage box 418 is arranged to be swingable about an axial center Z1 of the vertical conveying section 420, and is switchable between a normal operation posture in which it is retracted inward of the machine body as shown by a solid line in fig. 39 and a maintenance posture in which it is extended laterally outward of the machine body as shown by an imaginary line in fig. 39.

The exhaust gas treatment device 411 includes a DPF (Diesel particulate Filter) of a known structure that traps and removes PM (particulate matter) contained in exhaust gas. The exhaust gas treatment device 411 is configured to be capable of switching between an automatic mode in which regeneration processing for burning and removing trapped particulate matter is automatically performed and an inhibition mode in which regeneration processing is inhibited. When the engine 410 continues to operate to trap particulate matter while being switched to the prohibition mode, clogging occurs, and therefore, the regeneration process needs to be performed manually at regular intervals.

[ Driving part ]

Fig. 40 shows a cab 407 of the combine harvester. The operator's seat 422 on which an operator sits, a front panel portion 423 positioned in front of the operator's seat 422, and side panel portions 424 positioned on the left lateral side of the operator's seat 422 and straddling the front and rear of the operator's seat 407 are provided in the operator's seat 407. The side plate portion 424 is provided with a work clutch lever 425 for opening and closing a harvesting clutch and a threshing clutch, not shown, a main travel shift lever 426, a sub travel shift lever 427, and the like.

The front panel portion 423 is provided at the front end of the cab 407. The front panel portion 423 is provided with: a steering lever 428 for changing the direction of the traveling direction of the engine body, a liquid crystal display dashboard 429 as a traveling information display unit for displaying information on the traveling state of the engine body, an exhaust gas information display operation unit 430 for displaying information on the exhaust gas treatment device 411 and performing an operation on the information, and the like. That is, the steering rod 428, the meter panel portion 429, and the exhaust gas information display operation portion 430 are provided at the tip end portion of the driver portion 407. The dashboard 429 displays, for example, the engine speed as the information relating to the running state.

Further, an exhaust gas information display operation unit 430 is provided at a front end portion of the driver portion 407 in front of the driver seat 422. The exhaust gas information display operation unit 430 is provided between the steering rod 428 and the dial portion 429. The exhaust gas information display operation unit 430 is disposed adjacent to the instrument panel unit 429.

As shown in fig. 41, the exhaust gas information display operation unit 430 includes a manual operation unit 431 for performing a manual operation on the exhaust gas treatment device 411, and a state display unit 432 located adjacent to the manual operation unit 431 and displaying a state of the exhaust gas treatment device.

The manual operation unit 431 includes a prohibition switch 433 that switches the exhaust gas treatment device 411 to a prohibition mode and a regeneration switch 434 that forcibly executes a regeneration process. The prohibition switch 433 is provided with a prohibition-state display lamp 435 that is lit when the exhaust gas treatment device 411 is switched to the prohibition mode and is turned off when the prohibition mode is released. The regeneration switch 434 is provided with a regeneration status display lamp 436 that is turned on when the execution of the regeneration process is instructed and turned off when the execution of the regeneration process is not instructed.

The state display unit 432 includes a driving state display lamp 437 that is turned on when the exhaust gas treatment device 411 performs the regeneration process and turned off when the regeneration process is not performed. The exhaust gas treatment device 411 is in the automatic mode in the initial setting state, and is always set in the automatic mode when the prohibition switch 433 is not operated.

[ grain discharge drive Structure ]

As shown in fig. 42, a bottom screw conveyor 438 for discharging grains is provided at the bottom of the grain storage box 418. The power from the engine 410 is transmitted to the front portion of the bottom screw conveyor 438. The lower end of the vertical conveying section 420 is linked to the rear end of the bottom screw conveyor 438, and the base end of the horizontal conveying section 421 is linked to the upper end of the vertical conveying section 420.

Power from the engine 410 is intermittently transmitted to the bottom screw conveyor 438 and the grain discharge 419 via a belt-tensioned grain discharge clutch 439. As shown in fig. 42 and 43, the grain discharge clutch 439 includes: a belt 443 wound so as to straddle the pulley 440 provided on the output shaft of the engine 410 and the pulley 442 of the relay shaft 441 provided on the front portion of the grain storage box 418; and a tensioning mechanism 444 acting on the belt 443.

As shown in fig. 43, the tension mechanism 444 has: a swing arm 446 supported by the fixed bracket 445 so as to be swingable around the horizontal axis X; and a tension roller 447 rotatably supported by a swing end of the swing arm 446. The swing arm 446 is configured to be swing-operated by a driving force of an electric motor 449 coupled via an operation rope 448. When the operation cord 448 is pulled by the driving force of the electric motor 449, the swing arm 446 is swung upward, and the tension roller 447 applies tension to the belt 443 to switch to a drive communication state.

With this configuration, the grain discharging clutch 439 cannot be opened or closed when the electric motor 449 fails or when a failure occurs in the coupling mechanism. Therefore, even in such a case, the manual operation mechanism 450 is provided to discharge the grains by manual operation.

As shown in fig. 43, the manual operation mechanism 450 includes a fulcrum pin 451 fixed to the body frame 401, and an operation arm 452 supported by the fulcrum pin 451 so as to be swingable around the front and rear axial cores. The fulcrum pin 451 is disposed to bend the rod body into a substantially L-shape in a side view, one end portion is integrally fixed to the body frame 401, and the operation arm 452 is rotatably supported by a bent portion 453 in a horizontal posture on the upper portion side.

The operation arm 452 extends from the fulcrum pin 451 to the left and right sides so as to swing the balance about the fulcrum pin 451. The left side of the fulcrum pin 451 extends from a gap between the front end of the grain storage box 418 and the radiator 413 to a manually operable position. The right side of the operating arm 452 extends to a position where it abuts against the lower end of the swing arm 446. When the left end of the operating arm 452 is pushed downward by hand or foot, the swinging arm 446, i.e., the tension roller 447 swings upward, and the grain discharge clutch 439 can be switched to a clutch communication state. Therefore, even in an abnormal state such as a failure of the electric motor 449, the grains in the grain storage box 418 can be discharged to the outside.

[ supporting structure of front part of body ]

Next, a frame structure around cab 407 and engine 410 in the front of the body will be described.

As shown in fig. 42 and 44, an engine room 409 is formed below the cab 407 by covering the periphery of the engine 410 with an engine cover 454. The driver seat 422 is supported by a top plate portion 454a of the hood 454. The engine cover 454 has a function of partitioning the internal space of the cab 407 and the engine room 409. In engine room 409, a radiator 413 is provided on the right side of engine 410, and a rectangular frame-shaped radiator support frame 455 is provided so as to surround radiator 413. Although not shown, the radiator support frame 455 supports the radiator 413, and also supports the cooling fan 412 that generates radiator cooling air, a fan cowling that guides the cooling air, and the like.

As shown in fig. 44, a plurality of, specifically, two right and left rear vertical frames 456 and 457 are provided behind the cab 407 so as to be aligned in the lateral direction and to stand from the body frame 401. A right-side square-tubular rear vertical frame 456 is located at a rear side of the engine room 409, and has a lower end connected to the body frame 401 and extending upward.

As shown in fig. 42, the upper portion of the right rear vertical frame 456 is coupled to the lower end portion of the rear wall portion 408A of the vehicle compartment 408. That is, a front-rear direction extending portion 458 formed of a rectangular tube in the front-rear direction is connected to an upper end portion of the right rear vertical frame 456, and the front-rear direction extending portion 458 extends forward. The front end portion of the longitudinally extending portion 458 is integrally coupled to a lower end portion of the rear wall portion 408A of the vehicle cabin 408, which is located rightward from the center portion, via a bracket 459 having a substantially U-shape in plan view. The strength of the front-rear direction extending portion 458 is reinforced by a reinforcement member 460 in an inclined posture that is connected to the rear vertical frame 456.

As shown in fig. 44 and 45, the upper portion of the square-tube-shaped rear vertical frame 457 located on the left side of the two rear vertical frames 456 and 457 is connected to the side panel portion 424. That is, the left rear vertical frame 457 is positioned at a rear side portion of the engine room 409, and a lower end portion thereof is connected to the body frame 1 and extends upward. The upper end of the left rear vertical frame 457 is connected to the right side of the side panel 424 by a bolt.

As shown in fig. 44, a square tubular first side vertical frame 461 and a square tubular second side vertical frame 462 located rearward of the first side vertical frame 461 are provided on the left lateral side of the side panel portion 424 opposite to the driver seat 422 in a state of being erected from the body frame 401. The left side portion of the rear side portion of the side panel portion 424 is connected to the upper and lower middle portions of the first side vertical frame 461 by bolts. In this way, the left and right sides of the rear portion of the side panel portion 424 are firmly supported by the frame body.

As shown in fig. 45, the first side vertical frame 461 is coupled to the left end portion of the lower end portion of the rear wall portion 408A of the vehicle compartment 408. Therefore, the lower end portion of the rear wall portion of the vehicle compartment 408 is supported by the right rear vertical frame 457 and the first side vertical frame 461.

As shown in fig. 45, a third side vertical frame 463 and a fourth side vertical frame 464 located below the front end of the side panel portion 424 are provided on the left lateral side of the side panel portion 424, in addition to the first side vertical frame 461 and the second side vertical frame 462, respectively. The third side vertical frame 463 and the fourth side vertical frame 464 are provided so as to stand from the body frame 401, and support the side panel portion 424 at the upper end portions thereof.

The third side vertical frame 463 is configured to: the lower half is located on the rear side so as to bypass the transmission case 465 located on the lower side of the front portion, and the upper half is biased toward the front side so as to support a portion of the side panel portion 424 where the operating load of the main shift lever 426 and the like is much applied. The front-rear direction frame 466 is bridged and connected across the vertical middle portion of the first side vertical frame 461 and the vertical middle portion of the fourth side vertical frame 464, and the strength of the left side of the driver's seat 407 can be enhanced.

A roof support frame 467 that supports the roof portion 454a of the hood 454 is provided above the engine room 409. As shown in fig. 44 and 46, the roof support frame 467 is configured by connecting a front lateral frame structure 467A located on the front side and extending in the lateral direction, a rear lateral frame structure 467B located on the rear side and extending in the lateral direction, and a plurality of front-rear direction frame structures 467C extending from the front lateral frame structure 467A to the rear lateral frame structure 467B to each other.

The right side portion of the top plate support frame 467 is coupled to the radiator support frame 455. That is, the right side end portions of the front lateral frame structure 467A and the rear lateral frame structure 467B are connected to the upper portion of the radiator support frame 455.

The top support frame 467 has a left side portion connected to the side panel portion 424 and the first side vertical frame 461. That is, the left end of the front lateral frame structure 467A is connected to the right longitudinal surface of the side panel portion 424 by a bolt. The left end of the rear lateral frame member 467B and the right side of the first lateral vertical frame 461 are coupled by bolts.

A strainer support portion 468 for supporting the strainer 415 is provided at an upper end portion of the second lateral vertical frame 462. A laterally extending portion 469 extending toward the threshing device 416 (left side) is provided on the left side surface of the second side vertical frame 462 on the lower side of the strainer support portion 468, and an extending side end portion of the laterally extending portion 469 is connected to the side wall of the threshing device 416 by a bolt. A locking piece 470 is provided on the opposite side of the lateral extension 469 in the front-rear direction. The locking piece 470 has a locking action by a locking mechanism (not shown) for holding the position of the grain bin 418 in a normal operation posture.

The proximal end of the laterally extending portion 469 of the second side vertical frame 462 and the middle portion of the first side vertical frame 461 are coupled by a front-rear direction coupler 471. In this way, the strength of the lateral load on the first side vertical frame 461 is ensured by connecting the first side vertical frame 461 and the second side vertical frame 462, and a complicated coupling mechanism such as a connecting mechanism with the threshing device 416 is not required, thereby simplifying the structure.

The two rear vertical frames 456 and 457 are connected to the roof support frame 467, respectively. Specifically, as shown in fig. 44, 45, and 46, a substantially U-shaped coupling bracket 473 in a side view is integrally coupled to the left side surface of each of the two rear vertical frames 456 and 457, and a substantially U-shaped coupling bracket 474 in a side view is integrally coupled to the rear side surface of the rear lateral frame structure 467B of the roof support frame 467. The coupling bracket 473 and the coupling bracket 474 are coupled by a bolt in a back-to-back abutting state. By such connection, the support strength of the frame structure around the cab and the engine is improved.

[ Another embodiment ]

(1) In the above embodiment, the top plate supporting frame 467 may be a lattice-shaped frame, a rectangular frame-shaped frame, or the like instead of the above-described structure, or the top plate supporting frame 467 may be implemented in various ways.

(2) In the above embodiment, the first side vertical frame 461 and the second side vertical frame 462 are connected to each other, but the two may not be connected to each other.

(3) In the above embodiment, the roof support frame 467 is connected to the first side vertical frame 461, but the roof support frame 467 may not be connected to the first side vertical frame 461.

(4) In the above embodiment, the side panel portion 424 is supported by the first side vertical frame 461, but instead of this configuration, a configuration may be adopted in which the side panel portion 424 is not connected to the first side vertical frame 461.

(5) In the above embodiment, the strainer 415 is supported by the upper end portion of the second side vertical frame 462, but a structure in which the strainer 415 is supported by the upper end portion of the rear vertical frame may be employed instead of this structure, and the supporting target can be changed as appropriate.

(6) In the above embodiment, the driver portion 407 is covered with the vehicle body 408, but a structure not including the vehicle body 408 may be employed.

(7) In the above embodiment, the exhaust gas information display operation unit 430 is provided between the steering rod 428 and the dial 429, but as shown in fig. 47 and 48, the exhaust gas information display operation unit 430 may be provided on the opposite side of the steering rod 428 with respect to the dial 429 in the left-right direction of the body instead of this configuration. In this case, the exhaust gas information display operation unit 430 is not limited to being provided in a front portion of the driver seat 422 as shown in fig. 47, and the exhaust gas information display operation unit 430 may be provided in a state of being positioned at a corner portion of the left end portion of the front end portion of the driver portion 407 as shown in fig. 48.

The corner portion mentioned here may be configured such that the front panel portion 423 is formed long in the left-right direction and disposed as the left end portion of the front panel portion 423, or may be configured such that the side panel portion 424 is formed long in the front-rear direction and disposed as the front end portion of the side panel portion 424.

(8) In the above embodiment, the steering rod 428 is provided in the steering unit 407, but the following structure may be adopted instead of the steering rod 428: as shown in (8-1) to (8-4) below, a steering wheel 476 having a rounded grip portion is provided at a front portion of the driver's portion 407 in front of the driver's seat 422, and the exhaust gas information display operation portion 430 is provided at a front portion of the driver's portion 407.

(8-1) As shown in FIG. 49, the exhaust gas information display operation unit 430 is configured to be disposed in a state of being located on the inner peripheral side of the steering wheel 476 as viewed from the driver seated in the driver seat 422.

(8-2) as shown in fig. 50, the exhaust gas information display operation unit 430 is provided in a state of being located on the outer peripheral side of the steering wheel 476 and in a state of being adjacent to the left side of the steering wheel 476 as viewed from the driver seated in the driver seat 422.

(8-3) As shown in FIG. 51, exhaust gas information display operation unit 430 is disposed in a state of being positioned at a corner of the left end portion of the front end portion of driver portion 407. The corner portions mentioned here are the same as those described in (1) above.

(8-4) as shown in fig. 52, the exhaust gas information display operation portion 430 is configured to be disposed in a state of being located on the outer peripheral side of the steering wheel 476 and in a state of being adjacent to the right side of the steering wheel 476 as viewed from the driver seated in the driver seat 422.

(9) In the above embodiment, as the information on the regeneration process, the information on whether the exhaust gas treatment device 411 is executing the regeneration process and the information on whether the exhaust gas treatment device 411 is in the state in which the regeneration process should be executed are displayed, but either one of them may be displayed.

(10) In the above embodiment, the exhaust gas information display operation unit 430 displays information related to the regeneration process of the exhaust gas treatment device 411, but may display other types of information.

(11) The present invention is not limited to a full-feed type combine harvester, but may be applied to a half-feed type combine harvester, and may be applied to other types of harvesters such as a corn harvester, in addition to a combine harvester.

Description of the reference numerals

3 driving part

5 engines

7 reaping part (reaping part)

8 threshing device

Feeder 10 (conveying part)

13 exhaust gas treatment device

17 first exhaust pipe part (bend)

30 bending part cover

30a upper surface part

30b horizontal cover part

40 connecting frame

50 exhaust gas treatment device cover

A exhaust pipe

S1 gap

208 driving part

208b frame

208d riding port

215 grain storage box

217 grain discharging device

236a belt wheel

237 grain discharging clutch (Clutch)

237a tensioning wheel

237b spring

237d end portion

259 side panel

281 clutch switching rod (first man operating parts)

309B second wire rope (operating rope)

309Bb end portion

340 support

350 fourth wire rope (operating rope)

350b end portion

350c end

G first coupling mechanism

H second coupling mechanism

J second human operator

M electric motor (actuator)

407 driver's part

409 Engine room

410 engine

413 radiator

411 waste gas treatment device

422 driver's seat

423 panel unit for operation

424 side panel part

428 steering rod

429 running information display unit

430 exhaust gas information display operation part

454 engine cover

454a ceiling plate part

455 radiator support frame

456. 457 rear longitudinal frame

461 first side vertical frame

462 second side longitudinal frame

467 Top plate supporting frame

467A front transverse frame structure

467B rear transverse frame structure

467C front-rear direction frame structure

476 steering wheel.

Claims (5)

1. A harvester is characterized by comprising:

a harvesting part which is arranged at the front part of the machine body and harvests crops in a field;

a conveying part which is arranged on one side part of the machine body and conveys the crops harvested by the harvesting part;

a driver provided on the other side of the body;

an exhaust gas treatment device disposed below the driver's part and treating exhaust gas of the engine; and

an exhaust pipe that discharges exhaust gas from the exhaust gas treatment device,

the exhaust pipe extends from the exhaust treatment device in the direction of the transport unit, is bent rearward, and extends rearward between the transport unit and the cab,

the harvester is provided with a bending part cover which covers the backward bending part of the exhaust pipe from the upper part,

the harvester is provided with an exhaust gas treatment device cover which is supported by the driving part and covers the exhaust gas treatment device from the conveying part side,

the exhaust pipe is provided so as to penetrate the exhaust treatment device cover,

the curved portion cover is supported by the exhaust treatment device cover.

2. The harvester of claim 1,

the upper surface portion of the curved portion cover is inclined.

3. A harvester according to claim 1 or 2,

a transverse cover part is arranged at the part of the bending part cover on the side of the conveying part,

the lateral cover portion extends to a lower side than a lower end of the curved portion.

4. A harvester according to claim 1 or 2, characterized by comprising:

a threshing device which is arranged at the rear side of the conveying part and is used for threshing the reaped objects reaped by the reaping part; and

a connecting frame connecting the driving part and the threshing device,

the bending portion cover is supported by the connection frame.

5. A harvester according to claim 1 or 2,

in the exhaust pipe, a gap for allowing air to flow from the outside to the inside of the exhaust pipe is formed in a portion of the exhaust pipe on the downstream side of the bent portion, and the bent portion cover is disposed in front of the gap.

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