WO2019189196A1 - Harvester and work machine - Google Patents

Abstract

Provided is a harvester in which contact between an exhaust pipe and straw dust or the arms and legs of a driver is limited. The harvester is provided with: a harvesting unit which is provided at the front part of the machine body and harvests crops in a field; a feeder which is provided on one side of the machine body and conveys crops harvested by a reaping unit; a driving unit 3 which is provided on the other side of the machine body; an exhaust treatment device 13 which is provided on a lower side of the driving unit 3 and treats exhaust gas from an engine 5; and an exhaust pipe A which discharges exhaust from the exhaust treatment device 13. The exhaust pipe A extends from the exhaust treatment device 13 toward the feeder, is curved backward, and extends backward between the feeder and the driving unit 3. The harvester is provided with a curved part cover 30 covering, from above, a first exhaust pipe part 17 which is the part of the exhaust pipe A that is curved backward.

Description

Harvester and work machine

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

(1) Conventionally, there is a harvester equipped with an exhaust pipe for exhausting exhaust from the exhaust treatment device.

For example, in Patent Document 1, an exhaust treatment device that purifies exhaust gas from an engine is provided in a state of being located on the rear side of the fuselage of an operation unit, and an exhaust pipe that exhausts exhaust from the exhaust treatment device to the outside, A combine is described which extends in a rearwardly inclined posture between the threshing device and the grain tank and is configured to discharge exhaust toward the upper side of the threshing device.

(2) Moreover, for example, Patent Document 2 describes a harvester, a threshing device, a work device such as an unloader, a clutch for turning on and off power transmission to each work device, and a combine including a power clutch unit. Yes. The power clutch unit includes a cam mechanism and an electric clutch motor. Each clutch is turned on and off by the operation of the power clutch unit.

(3) Conventionally, there is a harvesting machine equipped with an engine below the operation unit.

In a combine as an example of a harvester, an engine bonnet that covers the periphery of the engine and forms an engine room 9 is provided, and a driver's seat is supported by a top plate portion on the upper side of the engine bonnet. In addition, on the rear side of the driving unit, for example, a vertical column for supporting a pre-cleaner arranged at a high position above and a vertical direction for supporting the rear end of the side panel unit positioned on the side of the driver seat. A plurality of vertically oriented frame bodies such as support columns were provided. Conventionally, the top plate support frame for supporting the top plate portion extends in the left-right direction and is supported at both left and right end portions, and each of the plurality of vertically oriented frame bodies is connected to the body frame at the lower end portion. The upper side is connected to a member (such as a precleaner or a side panel portion) to be supported (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 2016-168022 JP2018-121615A JP 2014-45672 A

(1) Issues corresponding to background technology (1) are as follows.

Since the exhaust pipe is heated by high-temperature exhaust from the exhaust treatment device, it is necessary to suppress contact with straw scraps and the limbs of the driver. Here, the arrangement of the exhaust pipe is determined by the arrangement of the exhaust processing device, the operation unit, the harvesting unit, the transport unit, and the like. In recent years, in harvesting machines such as combine harvesters, it has been demanded that the work efficiency can be improved by increasing the size of a crop processing apparatus such as a threshing apparatus mounted on the machine body. Along with this, the space in which the exhaust pipe can be arranged is becoming narrower, and it is difficult to suppress contact with the above-described straw scraps and the driver's limbs.

In view of the above situation, an object of the present invention is to provide a harvesting machine in which contact between the waste scraps and the limbs of the driver and the exhaust pipe is suppressed.

(2) Issues corresponding to the background technology (2) are as follows.

In the combine of Patent Document 2, if a failure occurs in the power clutch unit or the operation wire that transmits the operation from the power clutch unit to each clutch, the working 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 working machine capable of continuing work even when a failure occurs.

(3) Issues corresponding to background technology (3) are as follows.

Recently, the harvesting machine as described above may increase the engine output from the viewpoint of improving the efficiency of the harvesting work, and accordingly, each device may become larger or heavier. However, when each device is increased in size in this way, if the above-described conventional configuration is adopted as the support structure around the operating part and the engine, the rigidity of the support structure that supports the entire driving part and around the engine is insufficient. There is a risk.

Therefore, it was desired to improve the support strength in the frame structure around the driving section and the engine.

(1) The means for solving the problem (1) are as follows.

The harvesting machine of the present invention is provided at the front part of the machine body, a harvesting unit for harvesting crops in the field, and a transport unit provided on one side of the machine body for transporting the crops harvested by the harvesting part, An operating unit provided on the other side of the airframe, an exhaust processing device that is disposed below the operating unit and processes exhaust gas from an engine, and an exhaust pipe that exhausts exhaust from the exhaust processing device. The exhaust pipe extends from the exhaust treatment device toward the transport unit, bends backward, extends rearward between the transport unit and the operation unit, and extends to the rear of the exhaust pipe. A bent portion cover for covering the bent portion from above is provided.

When the exhaust treatment device is provided below the operation unit and the exhaust pipe extends from the exhaust treatment device toward the transfer unit, the exhaust pipe passes through the vicinity of the operation unit. According to this characteristic configuration, the contact between the driver's limb and the exhaust pipe can be suppressed by providing the bent portion cover. Moreover, the contact between the straw scraps falling from above and the exhaust pipe can be suppressed.

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

According to this configuration, it is possible to suppress the accumulation of straw scraps falling from above on the upper surface portion of the bent portion cover.

In the present invention, it is preferable that a lateral cover portion is provided in a portion of the bent portion cover on the transport portion side, and the lateral cover portion extends to a lower side than a lower end of the bent portion.

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

In the present invention, a threshing device that is provided on the rear side of the transport unit and threshs the harvested product harvested by the harvesting unit, and a connecting frame that connects the operation unit and the threshing device are provided. It is preferable that the bent portion cover is supported by the connection frame.

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

In the present invention, an exhaust treatment device cover that is supported by the operating unit and covers the exhaust treatment device from the transport unit side is provided, and the exhaust pipe is provided through the exhaust treatment device cover, It is preferable that the bent portion cover is supported by the exhaust treatment device cover.

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

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

本 According to this configuration, the exhaust can be cooled by the air flowing from the gap. And since the bending part cover is arrange | positioned ahead of a clearance gap, the approach of straw scraps to a clearance gap can be suppressed and the cooling by a clearance gap is not prevented, and it is preferable.

(2) The means for solving the problem (2) are as follows.

The work machine according to the present invention includes a clutch that turns on and off the transmission of power to the work device according to the movement of the operation unit, an actuator that operates according to an operation input to the first artificial operation tool, the actuator, and the operation unit. And a second linkage mechanism for linking the second artificial operation tool and the operation section.

According to this characteristic configuration, even when a failure occurs in the actuator or the first linkage mechanism, the clutch can be operated via the second linkage mechanism by the second artificial operation tool, and the work unit is operated to perform the work. Can continue.

In the present invention, it is preferable that the first linkage mechanism and the second linkage mechanism are configured to be replaceable with respect to the operation unit.

According to this configuration, since the first linkage mechanism can be changed to the second linkage mechanism when a failure occurs, adverse effects (for example, malfunction of the first linkage mechanism) from the first linkage mechanism in which a failure has occurred are eliminated. Thus, the clutch can be reliably operated by the second artificial operation tool.

In the present invention, the clutch is disposed on the center side of the fuselage, the second linkage mechanism includes an operation wire, and an end of the operation wire on the second artificial operation tool side is disposed on the outer peripheral side of the body. It is preferable that

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

In the present invention, the operation unit, a grain storage tank that is disposed behind the operation unit and stores the grains obtained by the threshing process, and the working device that discharges the grains from the grain storage tank. And the clutch is configured to turn on and off power transmission to the grain discharge device, and is disposed between the operation unit and the grain storage tank. It is preferable that an end portion on the second artificial operation tool side of the operation wire of the second linkage mechanism is supported by a body outer peripheral side portion of the frame of the operation unit.

According to this configuration, the grain discharging device can be operated by operating the clutch between the driving part and the grain storage tank from the vicinity of the outer periphery of the driving part. That is, even when a failure occurs in the actuator or the first linkage mechanism, the clutch can be easily operated to operate the grain discharging device, and the grain discharging operation can be continued.

In the present invention, provided with a driving unit, the clutch is disposed on the center side of the machine body, the second linkage mechanism includes an operation wire, and the end of the operation wire on the second artificial operation tool side is It is suitable if it is arranged in the operating part.

構成 According to this configuration, the clutch at the center of the fuselage can be easily operated from the driving unit.

In the present invention, a grain storage tank that is arranged behind the operation unit and stores the grain obtained by the threshing process, and the grain as the working device that discharges the grain from the grain storage tank. A second discharging mechanism, and the clutch is configured to turn on and off power transmission to the grain discharging device, and is disposed between the operation unit and the grain storage tank, and the second linkage mechanism. It is preferable that the end of the operation wire on the second artificial operation tool side is supported by a side panel disposed on the side opposite to the boarding entrance in the left-right direction of the vehicle body.

According to this configuration, the grain discharging device can be operated by operating the clutch between the driving unit and the grain storage tank on the side panel of the driving unit. That is, even when a failure occurs in the actuator or the first linkage mechanism, the clutch can be easily operated to operate the grain discharging device, and the grain discharging operation can be continued.

In the present invention, the first linkage mechanism includes an operation wire, the clutch-side end of the outer casing of the operation wire is supported by a stay, the second linkage mechanism includes an operation wire, and the operation wire It is preferable that the end portion on the clutch side of the outer casing of the wire is supported by the stay.

According to this configuration, since the positional relationship with the operation unit is substantially the same between the first linkage mechanism and the second linkage mechanism, the direction of the force exerted by the second linkage mechanism on the operation unit is determined by the first linkage mechanism. It becomes almost the same as the direction of the force exerted on the part. Therefore, the clutch can be operated by the second artificial operating tool with high efficiency and high certainty. Moreover, the outer casings of the first linkage mechanism and the second linkage mechanism can be supported by one stay, which is preferable because the structure is simplified.

In the present invention, the clutch is a belt tension type clutch having a tension pulley, and an end of the spring that supports the suspension of the tension pulley opposite to the tension pulley is the operation portion, and the stay Is preferably located above the spring.

When the stay is located below the spring, the handling of the operation wire from the stay to the operation unit becomes complicated, and the reliability of the operation of the clutch may be impaired. According to this configuration, the handling of the operation wire from the stay to the operation unit can be simplified. Also, according to this configuration, the tension pulley supported by the spring is operated by the operation wire supported by the stay located above the spring, so that the operation of the operation wire for clutch operation is simple. Ascending operation is preferable because the certainty of the clutch operation is improved.

(3) The means for solving the problem (3) are as follows.

The characteristic configuration of the harvesting machine according to the present invention includes a driving unit having a driving seat, an engine positioned below the driving unit, an engine room that covers the periphery of the engine, and a top plate unit that performs the driving. An engine bonnet that supports the seat, a plurality of rear vertical frames that are arranged in a lateral direction and are erected from the fuselage frame, and a top plate support that supports the top plate portion of the engine bonnet. A frame, and each of the plurality of rear vertical frames and the top plate support frame are connected to each other.

The top support frame is connected to each of the plurality of rear vertical frames standing in the horizontal direction and standing from the body frame. The top plate support frame supports the driver's seat, and is provided at a position away from the airframe frame, so that the top plate support frame is positioned at the upper and lower intermediate positions of the rear vertical frame.

As a result, each of the plurality of rear vertical frames has a lower end portion connected to the body frame and upper and lower intermediate portions are connected to the top plate support frame, so that it is firmly connected and supported at two locations separated in the vertical direction. Is done. The top plate support frame is provided in a state of extending in the left-right direction to support the top plate, but is firmly supported by being connected to a plurality of rear vertical frames in the middle of the extending direction.

Therefore, by connecting the plurality of rear vertical frames and the top support frame, it is possible to improve the support strength in the frame structure around the driving unit and the engine.

In the present invention, a side panel portion is provided on a lateral side of the driver seat, and a rear vertical frame provided at the rear of the side panel portion among the plurality of rear vertical frames is arranged at a rear end portion of the side panel portion. Is preferably supported.

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

In the present invention, a first side vertical frame is provided on the side of the side panel opposite to the driver's seat in a state of being erected from the body frame, and the first side vertical frame It is preferable that the top plate support frame is connected to the base plate.

According to this configuration, since the top plate support frame is connected to the first side vertical frame in addition to the plurality of rear vertical frames, 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 configuration, the side panel portion can be supported more firmly against the load in the vertical direction.

In the present invention, a second side vertical frame is provided behind the first side vertical frame in a state of standing from the body frame, and the first side vertical frame and the second side vertical frame are provided. It is preferable that the frame is connected.

According to this configuration, since the first side vertical frame and the second side vertical frame are connected, it is possible to increase the support strength against the lateral load with respect to the first side vertical frame.

In the present invention, the top plate support frame is located on the front side and extends in the lateral direction, the front sideways frame structure, located on the rear side and extends in the lateral direction, and the front side frame structure It is preferable that each of a plurality of front and rear frame structures extending from the part sideways frame structure to the rear side frame structure is connected to each other.

According to this configuration, the top plate support frame is provided in a frame shape that connects the horizontal frame structure on both the front and rear sides and the plurality of front and rear frame structures, so that the top plate support frame has high rigidity. Thus, the support strength can be improved.

In the present invention, a radiator for cooling the engine located laterally outward of the engine and a radiator support frame standing from the body frame and supporting the radiator are provided, and the top plate support frame is the radiator. It is preferable that it is connected to a support frame.

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

In the present invention, an exhaust gas treatment device that purifies 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 operations related to the information are provided. It is preferable that the operation unit is provided at a front end portion of the operation unit.

According to this configuration, since the exhaust gas information display operation unit is provided at the front end portion of the driving unit, information displayed on the exhaust gas information display operation unit by the driver who is seated on the driver's seat and performing the driving operation is provided. Is easy to check visually. As a result, it has become possible to quickly confirm information related to the exhaust gas treatment apparatus or perform necessary operations.

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

According to this configuration, since the vehicle is located in front of the driver's seat, the driver can more easily confirm information displayed on the exhaust gas information display operation unit.

In the present invention, a travel information display unit that displays information related to the travel state of the fuselage is provided at the front end of the driving unit, a steering lever is provided at the front end of the driving unit, and the exhaust gas information display operation unit is It is preferable that it is provided between the steering lever and the travel information display section.

れ ば According to this configuration, it is easy for the driver to confirm information on the traveling state of the aircraft. In addition, during work travel, the driver travels while checking the travel information display unit while operating the steering lever, but at that time, the exhaust gas information display operation unit is between them, so information related to exhaust gas is displayed. Easy to check visually.

In the present invention, a travel information display unit that displays information on the travel state of the aircraft is provided at the front end of the driving unit, and the exhaust gas information display operation unit is provided adjacent to the travel information display unit. Preferably, a steering lever is provided at a front end portion of the driving unit, and the exhaust gas information display operation unit is provided on a side opposite to the steering lever with respect to the travel information display unit in the left-right direction of the vehicle body. is there.

According to this configuration, since the exhaust gas information display operation unit is adjacent to the travel information display unit, it is easier to confirm information related to exhaust gas. Moreover, while it is easy to check the running state, it is possible to visually check information related to the exhaust gas.

In the present invention, a steering wheel is provided in a front portion of the driver seat in a front end portion of the driver, and the exhaust gas information display operation unit is viewed from the driver seated on the driver seat. It is preferable that the operation panel is provided at a front end portion of the operation unit, and the exhaust gas information display operation unit is provided in the operation panel unit. .

According to this configuration, the direction change 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. In addition, the exhaust gas information display operation unit can be provided in a state in which the driver can easily see using the control panel unit.

In the present invention, a steering wheel is provided in a front portion of the driver seat in a front end portion of the driver, and the exhaust gas information display operation unit is viewed from the driver seated on the driver seat. Is provided in a state adjacent to the steering wheel, and is provided with a steering panel at the front end of the driving unit, and the exhaust gas information display operation unit is provided on the steering panel. It is suitable if it is provided.

According to this configuration, the exhaust gas information display operation unit is located at a widely open position on the outer peripheral side of the steering wheel, so that the exhaust gas information can be easily viewed. In addition, the exhaust gas information display operation unit can be provided in a state in which the driver can easily see using the control panel unit.

In the present invention, a steering wheel is provided in a front portion of the driver seat in a front end portion of the driver, and the exhaust gas information display operation unit is viewed from the driver seated on the driver seat. Is provided in a state adjacent to the steering wheel in a state of being located on the outer peripheral side of the vehicle, and a side panel portion is provided on the lateral side of the driver seat across the driving unit, and the exhaust gas information display operation unit is It is suitable if it is provided at the front end of the side panel.

According to this configuration, the exhaust gas information display operation unit is located at a widely open position on the outer peripheral side of the steering wheel, so that the exhaust gas information can be easily viewed. In addition, the front end portion of the side panel portion tends to be an empty region, but the exhaust gas information display operation unit can be deployed in a state where it is easy to check information on the exhaust gas by effectively using this region.

In the present invention, the exhaust gas treatment device executes a collection process for collecting particulate matter and a regeneration process for burning and removing the collected particulate matter, and the exhaust gas information display operation unit includes: , Displaying information related to the regeneration process in the exhaust gas treatment apparatus, the information related to the regeneration process is information about whether or not the exhaust gas treatment apparatus is executing the regeneration process, and the exhaust gas treatment It is preferable that the information is whether or not the apparatus is in a state to be played back.

According to this configuration, exhaust gas can be purified by collecting particulate matter over a long period of time while avoiding clogging by executing regeneration processing. In addition, the driver can easily confirm whether or not the exhaust gas treatment apparatus should be regenerated, and the usability is improved.

It is a figure which shows 1st Embodiment (following, it is the same also to FIG. 10), and is a right view which shows the whole combine. It is a top view which shows the whole combine. It is a top view which shows an exhaust pipe and a bending part cover. It is a left view which shows an exhaust pipe and a bending part cover. It is a perspective view which shows an exhaust pipe and a bending part cover. It is a left side sectional view showing a clutch switching lever. It is a top view which shows a clutch switching lever. It is a back sectional view showing a clutch change lever. It is a top view which shows a front panel. It is a left view which shows the support structure of a brake sensor. It is a figure which shows 2nd Embodiment (following, it is the same also to FIG. 37), and is a right view which shows a normal type combine. It is a top view which shows a normal type combine. It is left side sectional drawing which shows a threshing apparatus. It is a figure which shows the power transmission path | route of this combine. It is a left view which shows an operation cabin. It is a plane sectional view showing an operation cabin. It is a back sectional view showing a driving cabin and an engine room. It is a right side sectional view showing a driving cabin and an engine room. It is a left side sectional view showing a clutch switching lever. It is a top view which shows a clutch switching lever. It is a back sectional view showing a clutch change lever. It is a right view which shows the periphery structure of a clutch switching device and a clutch switching device. It is a top view which shows the surrounding structure of a clutch switching device and a clutch switching device. It is a rear view which shows the periphery structure of a clutch switching device and a clutch switching device. It is a disassembled perspective view which shows a clutch switching apparatus. It is right side sectional drawing which shows a clutch switching apparatus. It is a plane sectional view showing a clutch switching device. It is a figure which shows a control block. It is a figure which shows the rotational position of a 1st cam, a 2nd cam, and a 3rd cam. It is a figure which shows the correspondence of the rotation position of a 1st cam, a 2nd cam, and a 3rd cam, and the state of a reaping clutch, a grain discharge clutch, and a threshing clutch. It is a right view which shows the periphery structure of a grain discharge clutch. It is a rear view which shows the periphery structure of a grain discharge clutch. It is a right view which shows the surrounding structure of the edge part of a 4th cable wire. It is a right view which shows the periphery structure of a grain discharge clutch. It is a top view which shows the operation part which concerns on another embodiment. It is a right view which shows the periphery structure of the grain discharge clutch which concerns on another embodiment. It is right side sectional drawing which shows the clutch switching apparatus which concerns on another embodiment. It is a figure which shows 3rd Embodiment (following, it is the same also to FIG. 52), and is a whole side view of a combine. It is a whole top view of a combine. It is a top view of an operation part. It is a top view of an exhaust gas information display operation part. It is a side view which shows the support structure of an operation part, and the transmission system for grain discharge. It is a perspective view which shows an artificial operation mechanism. It is a perspective view which shows the support structure of a body front part. It is a side view which shows the support structure of a body front part. It is a top view which shows the support structure of a body front part. It is a top view of the operation part of another embodiment. It is a top view of the operation part of another embodiment. It is a top view of the operation part of another embodiment. It is a top view of the operation part of another embodiment. It is a top view of the operation part of another embodiment. It is a top view of the operation part of another embodiment.

[First Embodiment]
Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F shown in FIGS. 1, 2, etc. is “front”, the direction of the arrow B is “back”, and the arrow U shown in FIG. The direction of the aircraft is “upward”, the direction of arrow D is “downward”, the direction of arrow L shown in FIG. 2 etc. is “left”, and the direction of arrow R is “right”.

[Overall configuration of ordinary combine]
As shown in FIGS. 1 and 2, a normal combine body includes a frame-shaped body frame 1 formed by combining bar-shaped frame members and the like, and a left and right body mounted on the lower part of the body frame 1. A pair of crawler type traveling devices 2 is provided. A driving unit 3 is provided on one side (right side) of the airframe. The boarding space of the driving unit 3 is covered by the cabin 4. An engine room 6 having an engine 5 is provided below the operation unit 3. A cutting part 7 (corresponding to a “harvesting part”) for cutting and harvesting planted cereals such as rice and wheat as crops in the field is provided at the front part of the machine body so as to be able to move up and down. A threshing device 8 and a grain tank 9 are provided at the rear of the machine body frame 1. The threshing device 8 and the grain tank 9 are provided side by side in the width direction of the machine body. A feeder 10 (corresponding to a “conveying unit”) is provided across the mowing unit 7 and the threshing device 8 on one side (left side) of the machine body. The whole of the culm harvested by the reaper 7 from the root to the tip is supplied to the threshing device 8 by the feeder 10 and threshed in the threshing device 8. The threshing device 8 is provided behind the feeder 10. A threshing device is erected between the threshing device 8 and the grain tank 9. The cerealing device is connected to a grain discharging unit formed in the lower part of the threshing device 8 and a grain supplying unit formed in the upper part of the grain tank 9. The grain obtained by the threshing apparatus 8 is supplied to the grain tank 9 by the threshing apparatus and stored in the grain tank 9.

A grain discharging device 12 for discharging the grains in the grain tank 9 to the outside is provided. The grain discharging device 12 includes a vertical conveyance unit that conveys the grain in the grain tank 9 upward, and a horizontal conveyance unit that conveys the grain from the vertical conveyance unit toward the outside of the machine body. It has been.

As shown in FIGS. 1 and 2, the engine 5 is provided in front of the grain tank 9.
In the engine room 6, an exhaust treatment device 13 that purifies exhaust of the engine 5 is provided at a location located above the engine 5. In the exhaust treatment device 13, exhaust from the engine 5 is introduced, diesel particulates contained in the introduced exhaust are collected by a collection filter (not shown), and exhaust purification processing is performed to reduce diesel particulates. Is called.

〔Exhaust pipe〕
As shown in FIGS. 1 and 2, an exhaust pipe A is connected to the exhaust treatment device 13. The exhaust pipe A extends from the exhaust treatment device 13 toward the feeder 10 (leftward), bends backward, and extends backward between the feeder 10 and the operation unit 3. The exhaust port 25 of the exhaust pipe A is opened at the rear part of the airframe.

The exhaust pipe A includes a first exhaust pipe part 17 (corresponding to a “bent part”), a second exhaust pipe part 18, and a third exhaust pipe part 19.

The 1st exhaust pipe part 17 is arrange | positioned between the driving | operation part 3 and the threshing apparatus 8, as FIG. 2, FIG. 3 shows. The first exhaust pipe portion 17 has an upstream side connected to the exhaust treatment device 13 and a downstream side connected to the second exhaust pipe portion 18. The first exhaust pipe portion 17 extends horizontally from the connection portion with the exhaust treatment device 13 toward the feeder 10 (left side), and then bends backward while bending upward. The first exhaust pipe portion 17 is bent backward at an angle of 90 ° when viewed from above.

As for the 2nd exhaust pipe part 18, the front side part is arrange | positioned between the driving | operation part 3 and the threshing apparatus 8, and the rear part is arrange | positioned between the grain tank 9 and the threshing apparatus 8, as FIG. 2 shows. Has been. The second exhaust pipe portion 18 has an upstream side connected to the first exhaust pipe portion 17 and a downstream side connected to the third exhaust pipe portion 19. The second exhaust pipe portion 18 extends rearward and obliquely upward from the connection portion with the first exhaust pipe portion 17 and then extends rearward horizontally. The downstream side portion of the second exhaust pipe portion 18, that is, the rear side portion, is configured as a double pipe having an inner pipe and an outer pipe that is fitted on the inner pipe.

As shown in FIG. 2, the third exhaust pipe portion 19 has a front portion disposed between the grain tank 9 and the threshing device 8 and a rear portion projecting rearward from the body. The third exhaust pipe portion 19 is connected to the second exhaust pipe portion 18 on the upstream side and is open at the downstream end. The third exhaust pipe part 19 extends rearward from the connection portion with the second exhaust pipe part 18 and then extends obliquely upward rearward while expanding in diameter. The upstream side portion of the third exhaust pipe portion 19, that is, the front side portion, is configured as a double pipe having an inner pipe and an outer pipe that is fitted on the inner pipe.

As shown in FIGS. 4 and 5, the first exhaust pipe portion 17 and the second exhaust pipe portion 18 are such that the front end of the second exhaust pipe portion 18 is externally fitted to the rear end of the first exhaust pipe portion 17. And it connects in the state in which the clearance gap S1 is formed between the rear end of the 1st exhaust pipe part 17, and the front end of the 2nd exhaust pipe part 18. FIG. When the exhaust gas from the exhaust 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 passes through the gap S1 and passes through the gap S1 due to the ejector effect caused by the exhaust flow. It is drawn into the exhaust pipe part 18. When the drawn air is mixed, the exhaust inside the second exhaust pipe portion 18 is cooled. In other words, a gap S1 for allowing air to flow into the exhaust pipe A from the outside to the inside of the exhaust pipe A is formed in the downstream portion of the first exhaust pipe portion 17 in the exhaust pipe A, and the exhaust cooling section using the ejector effect by the gap S1 Is configured.

As shown in FIG. 5, the second exhaust pipe portion 18 and the third exhaust pipe portion 19 are such that the front end of the third exhaust pipe portion 19 is externally fitted to the rear end of the second exhaust pipe portion 18, and The second exhaust pipe 18 is connected in a state where a gap S2 is formed between the rear end of the second exhaust pipe 18 and the front end of the third exhaust pipe 19. When the exhaust gas from the exhaust 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 passes through the gap S2 to the third due to the ejector effect due to the exhaust flow. It is drawn into the exhaust pipe part 19. When the drawn air is mixed, the exhaust inside the third exhaust pipe part 19 is cooled. In other words, a clearance S2 for allowing air to flow into the exhaust pipe A from the outside to the inside of the exhaust pipe A is formed in the downstream portion of the second exhaust pipe section 18, and the exhaust cooling section using the ejector effect is formed by the clearance S2. Is configured.

[Curved part cover]
As shown in FIG. 3, a bent portion cover 30 that covers the first exhaust pipe portion 17 from above is provided between the operation portion 3 and the threshing device 8. In other words, the bent portion cover 30 is disposed in front of and above the first exhaust pipe portion 17. That is, the bent portion cover 30 is disposed in front of the gap S1. As shown in FIGS. 3, 4, and 5, the bent portion cover 30 includes an upper surface portion 30a, a lateral cover portion 30b, and a stay portion 30c.

The upper surface portion 30 a is a front portion of the bent portion cover 30. The upper surface portion 30a is a quadrangular flat plate-like portion, and is inclined forward and rightward with respect to the horizontal plane. In other words, the upper surface portion 30a is arranged in such a posture that the normal line is directed obliquely upward and obliquely to the right.

The horizontal cover portion 30b is a portion on the feeder 10 side (left side) of the bent portion cover 30, and is connected to the left side of the upper surface portion 30a. The lateral cover portion 30b is a triangular flat plate-like portion and is inclined forward and obliquely to the right with respect to a vertical plane parallel to the front-rear direction. In other words, the lateral cover portion 30b is arranged in a posture in which the normal line is directed obliquely leftward and forward. As shown in FIG. 4, the lower end of the lateral cover portion 30 b is located below the lower end of the first exhaust pipe portion 17. In other words, the lateral cover portion 30 b extends to a lower side than the lower end of the first exhaust pipe portion 17.

The stay portion 30c is an upper portion of the bent portion cover 30, and is connected to an upper side of the upper surface portion 30a. The stay portion 30c is a substantially rectangular flat plate-like portion, and is inclined diagonally left forward with respect to a vertical plane parallel to the front-rear direction. In other words, the stay portion 30c is arranged in a posture in which the normal line is directed obliquely forward to the right.

As shown in FIGS. 3, 4, and 5, the bent portion cover 30 is supported by the connecting frame 40 and the exhaust treatment device cover 50.

The connection frame 40 is a frame that connects the operation unit 3 and the threshing device 8. As shown in FIG. 3, the right end portion of the connection frame 40 is connected to the left rear frame 3 a in the operation unit 3. The left end portion of the connection frame 40 is connected to the right front frame 8 a of the threshing device 8. The support of the bent portion cover 30 by the connecting frame 40 is realized by attaching the stay portion 30 c of the bent portion cover 30 to the front surface of the connecting frame 40.

The exhaust treatment device cover 50 shown in FIGS. 4 and 5 is a cover that is supported by the operating unit 3 and covers the exhaust treatment device 13 from the feeder 10 side (left side). Specifically, the exhaust treatment device cover 50 is supported by the left side frames 3 b, 3 c, 3 d in the operation unit 3. The exhaust treatment device cover 50 is disposed on the left side of the operation unit 3 and covers the upper left part of the engine room 6.

The exhaust treatment device cover 50 is a rectangular flat member, and is disposed on a plane extending in the vertical direction and the front-rear direction. In other words, the exhaust treatment device cover 50 is arranged in a posture in which the normal line is directed in the left-right direction.

As shown in FIG. 4, the bent portion cover 30 is supported by the exhaust treatment device cover 50 by attaching the lower end portion of the upper surface portion 30 a of the bent portion cover 30 to a stay 50 a provided on the exhaust treatment device cover 50. It is realized by.

As shown in FIG. 4, the exhaust treatment device cover 50 has a notch 50b at the rear end. The first exhaust pipe portion 17 extends from the inside of the engine room 6 to the outside through the cutout portion 50b. In other words, the first exhaust pipe portion 17 is provided through the exhaust treatment device cover 50.

[Clutch switching lever]
A clutch switching lever 81 is provided in the operating unit 3. As shown in FIGS. 6 to 8, the clutch switching lever 81 is a lever that swings back and forth, and is a single lever that switches both the cutting clutch and the threshing clutch between the on state and the off state. . The clutch switching lever 81 is configured to be changeable to a first operation position O1, a second operation position O2, and a third operation position O3. The first operation position O1 is an operation position where both the mowing clutch and the threshing clutch are in the on state. The second operation position O2 is an operation position in which the mowing clutch is in a disengaged state and the threshing clutch is in an engaged state. The third operation position O3 is an operation position where both the mowing clutch and the threshing clutch are turned off. The clutch switching lever 81 is provided behind the main transmission lever.

The clutch switching lever 81 is configured to be able to swing back and forth around a swing axis X1 extending in the left-right direction of the machine body. The clutch switching lever 81 includes a grip 91, a grip side lever body 92, a support shaft side lever body 93, and a lever support shaft 94. The grip side lever body 92 is connected to the support side lever body 93 so as to be able to swing left and right by a hinge 95 with a spring (not shown). The spring oscillates and biases the grip side lever body 92 to the left. The grip side lever body 92 is provided with a stopper 92 a that abuts on the support side lever body 93 and restricts the swinging of the grip side lever body 92 to the left side.

(Swing support)
A swing support portion 96 that supports the clutch switching lever 81 so as to be swingable about the swing axis X1 is provided. A position detection sensor 82 is also supported on the swing support portion 96. The swing support portion 96 is placed and supported on the upper surface portion of the top plate 67 inside the side panel 59. The swing support part 96 is configured by a substantially L-shaped plate material. The swing support portion 96 includes a base portion 97 along the top plate 67 and a vertical wall portion 98 that is perpendicular or substantially perpendicular to the top plate 67. The base 97 is fixed to the top plate 67 with bolts 99. The vertical wall portion 98 is provided with a boss portion 100 through which the lever support shaft 94 is inserted. An attachment portion 101 to which the position detection sensor 82 is attached is provided on the left side portion of the vertical wall portion 98.

(Guide part)
A lever guide 103 having a guide portion 102 for guiding the clutch switching lever 81 is provided. The lever guide 103 is provided in a state straddling the swing support portion 96 from side to side. Leg portions 103 a are formed at both left and right ends of the lever guide 103, respectively. The leg portion 103 a is fixed to the top plate 67 with a bolt 104. The guide portion 102 is provided in a portion of the lever guide 103 positioned above the swing support portion 96.

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

The entry portion 102b has a shape that enters the direction (left side) intersecting with the swinging operation direction of the clutch switching lever 81 in a state of being connected to the straight portion 102a. The entry portion 102b is 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. When the grip-side lever body 92 enters the entry portion 102b and is oscillated and biased toward the entry portion 102b by the spring, the clutch switching lever 81 is held at each operation position.

The clutch switching lever 81 is a lever that swings back and forth as described above, and is configured to be able to swing back and forth along the linear portion 102a after a preliminary operation. Specifically, as the preliminary operation, the clutch switching lever 81 is operated along the straight line portion 102a after the grip side lever body 92 has been operated to escape from the entry portion 102b against the biasing force of the spring. It is configured to be able to swing back and forth. Thereby, in a state where the clutch switching lever 81 is held at each operation position, the clutch switching lever 81 cannot be swung back and forth along the linear portion 102a. The clutch switching lever 81 can be swung back and forth along the straight portion 102a by swinging rightward against the urging force to escape from the entry portion 102b.

Here, when the clutch switching lever 81 is switched from the third operation position O3 side to the first operation position O1 with the grip side lever body 92 swinging rightward, the grip side lever body 92 is moved to the guide portion. The abutting portion 102c of 102 is prevented from swinging forward of the clutch switching lever 81. Therefore, in order to release the contact with the end portion 102c of the guide portion 102, it is necessary to swing the grip side lever body 92 slightly to the left and then swing the clutch switching lever 81 to the front side. is there.

〔front panel〕
As shown in FIG. 9, a front panel 55 is provided on the front side portion of the operation unit 3. The front panel 55 is provided with a steering lever 56, a DPF panel 57, and a meter panel 58 in order from the right. The steering lever 56 receives operations such as a steering operation of the traveling machine body and a lifting operation of the cutting unit 7. The DPF panel 57 displays the regeneration state of the exhaust treatment device 13 and accepts an operation related to the regeneration operation. The meter panel 58 displays traveling vehicle speed, engine speed, engine load, fuel remaining amount, and the like. The DPF panel 57 is provided at the center portion of the front panel 55. The meter panel 58 is provided on the left side portion of the front panel 55.

[Fixing the side panel to the top plate]
As shown in FIG. 8, the side panel 59 is fixed to the upper surface of the top plate 67. The side panel 59 is fixed to the top plate 67 by inserting a claw 59 a provided at the lower end of the side panel 59 into a hole 67 a formed on the top surface of the top plate 67. This is realized by being caught on the lower surface. The front panel 55 can be fixed to the top plate 67 in the same manner as the side panel 59 is fixed to the top plate 67.

[Brake sensor support structure]
As shown in FIG. 10, the brake sensor 110 is supported by the stay 113.
The stay 113 is detachably attached to the frame 111 of the operation unit 3 with bolts 112. The brake sensor 110 detects an operation state of a parking brake pedal 3 e provided in the driving unit 3. Specifically, when the member 115 attached to the shaft member 114 that rotates in conjunction with the parking brake pedal 3e presses the tip of the brake sensor 110, it is detected that the parking brake pedal 3e has been stepped on. In the present embodiment, since the brake sensor 110 is supported by the stay 113 that can be attached to and detached from the frame 111, the stay 113 can be detached from the frame 111 and the brake sensor 110 can be easily adjusted.

[Another embodiment]
(1) In the above embodiment, an example in which the bent portion cover 30 covers the first exhaust pipe portion 17 from above has been described. The bent portion cover 30 may cover from both above and below the first exhaust pipe portion 17.

(2) In the above embodiment, the example in which the upper surface portion 30a of the bent portion cover 30 is inclined forward and rightward with respect to the horizontal plane has been described. The upper surface part 30a may be inclined in another direction. 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 arranged in a posture in which the normal line is directed obliquely upward in the front direction.

(3) In the above embodiment, the example in which the bent portion cover 30 is supported by the connection frame 40 and the exhaust treatment device cover 50 has been described. The bent portion cover 30 may be supported by another member.

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

(5) In the above-described embodiment, the example in which the first exhaust pipe portion 17 is bent backward at an angle of 90 ° in a top view is described. The angle at which the first exhaust pipe portion 17 bends backward may be less than 90 ° or greater than 90 °.

(6) The present invention can be applied to a harvesting machine that harvests crops that are planted while traveling, and can also be applied to a self-removing combine harvester, a corn harvester, and the like in addition to a normal combine.

[Second Embodiment]
EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated based on drawing. In the following description, the direction of the arrow F is “the front side of the aircraft” (see FIGS. 11 and 12), the direction of the arrow B is “the rear side of the aircraft” (see FIGS. 11 and 12), and the direction of the arrow L is “ The left side of the body (see FIG. 12) and the direction of the arrow R are the right side of the body (see FIG. 12).

[Overall structure of the combine]
11 and 12 show a normal combine (an example of a “work machine”). The combine includes a body frame 201 and a crawler traveling device 202. In front of the traveling machine body, a cutting unit 203 that cuts the planted cereals is provided. The mowing unit 203 is provided with a driving reel 204 that scrapes the planted culm, a cutting blade 205 that cuts the planting culm, and a scraping auger 206 that scrapes the harvesting culm.

The driving cabin 207 is provided on the right side of the front part of the traveling body. The driving cabin 207 includes a driving unit 208 on which the driver is boarded and a cabin 209 that covers the driving unit 208. An engine room ER is provided below the operation unit 208. The engine room ER houses an engine E, an exhaust purification device 210, a cooling fan 211, and a radiator 212 (see FIG. 17). A threshing device 213 for threshing the harvested cereal meal is provided behind the harvesting unit 203. A feeder 214 is provided across the mowing unit 203 and the threshing device 213 to convey the mowing cereal meal toward the threshing device 213. A grain storage tank 215 that stores grains obtained by the threshing process is provided side by side with the threshing apparatus 213. The grain storage tank 215 is configured to be able to swing open and close around an axis Z1 extending in the vertical direction across the work position and the maintenance position. A fuel tank 216 is provided between the rear part of the threshing device 213 and the rear part of the grain storage tank 215.

A grain discharging device 217 (an example of a “working device”) that discharges the grain in the grain storage tank 215 to the outside is provided. The grain discharging device 217 includes a vertical conveying unit 218 that conveys the grains in the grain storage tank 215 upward, and a horizontal conveying unit 219 that conveys the grains from the vertical conveying unit 218 toward the outside of the machine body. And are provided. The grain discharging device 217 is configured to be rotatable around the axis Z1 of the vertical conveying unit 218. The lower end portion of the vertical conveyance unit 218 is connected to the bottom of the grain storage tank 215 in communication. The end of the horizontal transport unit 219 on the side of the vertical transport unit 218 is connected to the upper end of the vertical transport unit 218 and is supported so as to be swingable up and down.

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

[Threshing equipment]
As shown in FIG. 13, a handling chamber 222 is formed in the upper part of the threshing device 213. A handling cylinder 223 is provided in the handling chamber 222 so as to be rotatable around a rotation axis Y1 extending in the longitudinal direction of the machine body. A receiving net 224 is provided below the handling drum 223. At the bottom of the threshing device 213, a swing sorting device 225 that swings and sorts the object to be sorted, a red pepper 226 that blows a sorting wind to the swing sorting device 225, the first grain (single grain, etc.) ) And the second recovery unit 228 for recovering the second grain (branch with grain, etc.). The first recovery unit 227 is provided with a first screw 229 that conveys the grain of the first item to the right. The second recovery unit 228 is provided with a second screw 230 that conveys the second grain to the right. The first screw 229 and the second screw 230 are provided at intervals in the longitudinal direction of the machine body. The first screw 229 and the second screw 230 are configured to be removable from the right side of the threshing device 213, and the first screw 229 and the second screw 230 are placed with the grain storage tank 215 positioned at the maintenance position. It can be pulled out from the right side of the threshing device 213. On the right side of the threshing device 213, the vertical conveying device 231 that conveys the first grain from the first screw 229 upward toward the grain storage tank 215 and the second thing from the second screw 230. A second reduction device 232 for reducing the grains to the front part of the swing sorting device 225 is provided.

[Power transmission path]
As shown in FIG. 14, a traveling transmission mechanism 234 that transmits the driving force of the engine E to the HST 220 via a transmission belt is provided. The driving force of the engine E is shifted by the HST 220 and the auxiliary transmission, and then transmitted to the crawler traveling device 202.

A grain discharge transmission mechanism 236 that transmits the driving force of the engine E to the grain discharge device 217 via the transmission belt 235 is provided. A grain discharge clutch 237 (an example of a “clutch”) that turns on and off the transmission of power to the grain discharge device 217 by the grain discharge transmission mechanism 236 is provided. The grain discharge clutch 237 is configured by a belt tension type clutch. As shown in FIG. 12, the grain discharge clutch 237 is disposed on the center side of the machine body. The grain discharge clutch 237 is disposed between the operation unit 208 and the grain storage tank 215 as shown in FIGS. 12 and 22.

A threshing transmission mechanism 239 for transmitting the driving force of the engine E to the tang 226 through the transmission belt 238 is provided. A threshing clutch 240 for turning on and off the power transmission to the tang 226 by the threshing transmission mechanism 239 is provided. The threshing clutch 240 is a belt tension clutch.

A belt transmission mechanism 241 for transmitting the power of the tang 226 to the first screw 229 and the second screw 230 is provided. A bevel gear transmission mechanism 242 that transmits the power of the first screw 229 to the vertical transfer device 231 is provided. A chain transmission mechanism 243 and a bevel gear transmission mechanism 244 for transmitting the power of the second screw 230 to the second reduction device 232 are provided.

A belt transmission mechanism 246 that transmits the power of the tang 226 to the relay shaft 245 is provided. A bevel gear transmission mechanism 248 that transmits the power of the relay shaft 245 to the handling cylinder 223 and the relay shaft 247 is provided. A cutting transmission mechanism 250 that transmits the power of the relay shaft 245 to the feeder 214 via the transmission belt 249 is provided. A mowing clutch 251 for turning on / off power transmission to the feeder 214 by the mowing transmission mechanism 250 is provided. The mowing clutch 251 is a belt tension type clutch.

[Driving cabin]
As shown in FIGS. 15 to 18, the cabin 209 is provided with a roof portion 252, a windshield 253, a side glass 254, a rear glass 255, and a passenger door 256. The driving unit 208 includes a driving seat 257, a front panel 258, a side panel 259, and a grain discharge operation unit 260. The front panel 258 is provided with a steering lever 261 and a meter panel 262. The steering lever 261 performs operations such as a steering operation of the traveling machine body and a lifting operation of the cutting unit 203.

A front cover 263 is provided at the front of the operation unit 208. A front support 264 is provided at the front of the left side of the operation unit 208. A rear column 265 is provided at the rear of the left side of the operation unit 208. A lower frame 266 extending in the longitudinal direction of the body is provided across the front column 264 and the rear column 265. A front end portion of the lower frame 266 is supported by the front support column 264, and a rear end portion of the lower frame 266 is supported by the rear support column 265. The lower frame 266 is located below the exhaust purification device 210.

The grain discharging operation unit 260 is provided on the right rear side of the driver seat 257. The grain discharging operation part 260 is provided with a turning operation part for turning the grain discharging apparatus 217 and an elevating operation part for raising and lowering the grain discharging apparatus 217 (lateral transport part 219).

[Exhaust air purification device]
The exhaust purification device 210 purifies the exhaust of the engine E with a DPF (diesel particulate filter). The exhaust purification device 210 is provided below the side panel 259 and above the engine E, with the longitudinal direction of the exhaust purification device 210 being along the longitudinal direction of the fuselage. The exhaust purification device 210 is provided below the side panel 259 so as to protrude to the left of the left end 259a of the side panel 259. The exhaust purification device 210 is entirely covered from above by the top plate 267 as well as the protruding portion of the exhaust purification device 210. The exhaust purification device 210 is placed and supported on the upper part of the engine E. The exhaust purification device 210 is connected to the engine E via front and rear stays 268.

〔Exhaust pipe〕
As shown in FIG. 22 to FIG. 24, an exhaust pipe 269 that exhausts exhaust gas after purification processing by the exhaust gas purification device 210 is provided. The exhaust pipe 269 is drawn from the rear part of the left side surface to the left side of the outer periphery of the exhaust gas purification device 210 and extends rearward and upward. The exhaust pipe 269 is provided between the threshing device 213 and the grain storage tank 215 so as to pass above the clutch switching device 270 and the fuel tank 216 described later in detail. In the exhaust pipe 269, between the exhaust upstream side end portion 271 connected to the exhaust purification device 210 and the portion 272 on the exhaust downstream side of the exhaust upstream side end portion 271, etc., in order to reduce the exhaust temperature, An outside air introduction portion 276 that introduces outside air into the exhaust pipe 269 is formed. A front step 277 and a rear step 278 are provided above the exhaust pipe 269 between the operation cabin 207 and the grain storage tank 215 and the threshing device 213.

[Side panel]
As shown in FIGS. 15 to 18, the side panel 259 is provided on the left side with respect to the driver seat 257. The side panel 259 is provided with a main transmission lever 279, an auxiliary transmission lever 280, and a clutch switching lever 281 (an example of “first human operation tool”). A position detection sensor 282 that detects the operation position of the clutch switching lever 281 is provided below the side panel 259 and above the exhaust purification device 210.

The main transmission lever 279 is a lever that swings back and forth, and is used to change the speed of the HST 220. The sub-transmission lever 280 is a lever that swings back and forth, and is used to change the speed of the sub-transmission device. The main transmission lever 279 and the sub transmission lever 280 are provided side by side so that the main transmission lever 279 is located on the left side and the sub transmission lever 280 is located on the right side. That is, the main transmission lever 279 is located on the opposite side of the driver seat 257 in the left-right direction of the aircraft with respect to the auxiliary transmission lever 280. Here, assuming that the protruding length of the portion of the main transmission lever 279 protruding from the upper surface of the side panel 259 is L1, and the protruding length of the portion of the auxiliary transmission lever 280 protruding from the upper surface of the side panel 259 is L2, The shift lever 279 is configured such that the protruding length L1 is longer than the protruding length L2.

An upper frame 283 that supports the side panel 259 is provided. The upper frame 283 is provided with a top plate 267. The top plate 267 is provided between the exhaust purification device 210 and the position detection sensor 282, and vertically partitions the exhaust purification device 210 and the position detection sensor 282, and the exhaust purification device 210 is connected to the exhaust purification device 210. It covers not only the protruding part, but the whole from above. The top plate 267 spans the front end portion and the rear end portion of the side panel 259, and spans the left side portion and the right side portion of the side panel 259.

In the space below the side panel 259, a front cover 335 that covers the exhaust purification device 210 from the front side is provided. A lower space of the side panel 259 is partitioned by a front cover 335 into a front space and a rear space (a space on the side where the exhaust purification device 210 is located). An upper end portion of the front cover 335 is supported by the top plate 267 via a stay 336.

〔cover〕
A cover 284 is provided to cover the space below the side panel 259 from the left side with respect to the exhaust purification device 210. The cover 284 extends in the front-rear direction of the fuselage such that the front end of the cover 284 is located on the front side of the front end of the side panel 259 and the rear end of the cover 284 is located on the rear side of the rear end of the side panel 259. ing. A cutout portion 284 a is formed at the rear portion of the cover 284 so as not to interfere with the exhaust upstream side end portion 271 of the exhaust pipe 269. The cover 284 is formed with a bulging portion 284b that bulges to the left of other portions. That is, in a plan view, a portion (bulging portion 284b) of the cover 284 located on the side of the exhaust purification device 210 bulges leftward from the other portions.

The cover 284 is supported by the upper frame 283 and the lower frame 266, and is configured to be detachable from the upper frame 283 and the lower frame 266. A portion of the upper frame 283 corresponding to the bulging portion 284b projects to the left of the other portions. A portion of the lower frame 266 corresponding to the bulging portion 284b projects to the left of the other portions. The upper portion of the cover 284 is detachably fixed to the vertical wall portion 283a of the upper frame 283 by bolts 285. The lower frame 266 is provided with a stay 286 that extends upward from the lower frame 266. The lower part of the cover 284 is detachably fixed to the stay 286 with bolts 287.

[Vertical frame]
A vertical frame 288 extending in the vertical direction is provided across the upper frame 283 and the lower frame 266. The vertical frame 288 is provided on the left side of the cover 284 and overlaps the cover 284 in a side view. That is, the vertical frame 288 is provided on the left side with respect to the exhaust purification device 210 and is provided so as to overlap with the exhaust purification device 210 in a side view. The vertical frame 288 is supported by the upper frame 283 and the lower frame 266 and is configured to be detachable from the upper frame 283 and the lower frame 266. The upper end portion of the vertical frame 288 is fixed to the vertical wall portion 283a of the upper frame 283 together with the upper portion of the cover 284 by a bolt 285 so as to be detachable. The lower frame 266 is provided with a stay 289 that extends downward from the lower frame 266. The lower end portion of the vertical frame 288 protrudes below the lower end of the lower frame 266 and is detachably fixed to the stay 289 with a bolt 290.

[Clutch switching lever]
As shown in FIGS. 19 to 21, the clutch switching lever 281 is a lever that swings back and forth, and switches the grain discharge clutch 237, the mowing clutch 251, and the threshing clutch 240 between the on state and the off state. A single thing to do. The clutch switching lever 281 is configured to be changeable to a first operation position O1, a second operation position O2, and a third operation position O3. The first operation position O1 is an operation position where both the reaping clutch 251 and the threshing clutch 240 are in an on state and the grain discharge clutch 237 is in a disengaged state. The second operation position O2 is an operation position in which the mowing clutch 251 is turned off, the threshing clutch 240 is turned on, and the grain discharge clutch 237 is turned off. The third operation position O3 is an operation position where both the mowing clutch 251 and the threshing clutch 240 are in a disconnected state and the grain discharge clutch 237 is in a disconnected state. Clutch switching lever 281 is provided behind main transmission lever 279.

The clutch switching lever 281 is configured to be able to swing back and forth around a swing axis X1 extending in the left-right direction of the machine body. The clutch switching lever 281 includes a grip 291, a grip side lever body 292, a support shaft side lever body 293, and a lever support shaft 294. The grip-side lever body 292 is connected to the support-side lever body 293 so as to be able to swing left and right by a hinge 295 with a spring (not shown). The spring urges the grip side lever body 292 to swing leftward. The grip side lever body 292 is provided with a stopper 292a that abuts on the support side lever body 293 and restricts the swinging of the grip side lever body 292 to the left side.

(Swing support)
A swing support portion 296 that supports the clutch switching lever 281 so as to be swingable about the swing axis X1 is provided. A position detection sensor 282 is also supported on the swing support portion 296. The swing support portion 296 is placed and supported on the upper surface portion of the top plate 267 inside the side panel 259. The swing support part 296 is configured by a substantially L-shaped plate material. The swing support portion 296 includes a base portion 297 along the top plate 267 and a vertical wall portion 298 that is perpendicular or substantially perpendicular to the top plate 267. The base 297 is fixed to the top plate 267 with bolts 299. The vertical wall portion 298 is provided with a boss portion 300 through which the lever support shaft 294 is inserted. An attachment portion 301 to which the position detection sensor 282 is attached is provided on the left side portion of the vertical wall portion 298.

(Guide part)
A lever guide 303 having a guide portion 302 for guiding the clutch switching lever 281 is provided. The lever guide 303 is provided so as to straddle the swing support portion 296 from side to side. Leg portions 303a are formed at both left and right ends of the lever guide 303, respectively. The leg portion 303 a is fixed to the top plate 267 with a bolt 304. The guide portion 302 is provided in a portion of the lever guide 303 positioned above the swing support portion 296.

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

The entry portion 302b has a shape that enters the direction (left side) intersecting the swinging operation direction of the clutch switching lever 281 in a state of being connected to the straight portion 302a. The entry portion 302b is 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. When the grip-side lever body 292 enters the entry portion 302b and is oscillated and biased toward the entry portion 302b by the spring, the clutch switching lever 281 is held at each operation position.

The clutch switching lever 281 is a lever that swings back and forth as described above, and is configured to be able to swing back and forth along the straight portion 302a after a preliminary operation. Specifically, as the preliminary operation, the clutch switching lever 281 is operated along the straight line portion 302a after the grip side lever body 292 is operated to escape from the entry portion 302b against the biasing force of the spring. It is configured to be able to swing back and forth. As a result, in the state where the clutch switching lever 281 is held at each operation position, the clutch switching lever 281 cannot be swung back and forth along the straight portion 302a, but the grip side lever body 292 is moved by the spring. The clutch switching lever 281 can be swung back and forth along the straight portion 302a by swinging rightward against the urging force to escape from the entry portion 302b.

Here, when the clutch switching lever 281 is switched from the third operation position O3 side to the first operation position O1 with the grip side lever body 292 swinging rightward, the grip side lever body 292 is moved to the guide portion. The abutting portion 302c of 302 is prevented from swinging forward of the clutch switching lever 281. Therefore, in order to release the contact with the end portion 302c of the guide portion 302, it is necessary to swing the grip side lever body 292 slightly to the left and then swing the clutch switching lever 281 to the front side. is there.

[Clutch switching device]
As shown in FIG. 22 to FIG. 27, a clutch switching device 270 that switches the reaping clutch 251, the threshing clutch 240, and the grain discharge clutch 237 between the on state and the off state at an appropriate timing is provided. The clutch switching device 270 is provided behind the vertical conveying device 231 between the threshing device 213 and the grain storage tank 215. The clutch switching device 270 is provided between the first screw 229 and the second screw 230 in the longitudinal direction of the machine body. The clutch switching device 270 is provided below the constricted portion 215a of the grain storage tank 215. In other words, the clutch switching device 270 is provided so as to overlap with the grain storage tank 215 in plan view. The clutch switching device 270 is provided so as to overlap with the base of the second reduction device 232 in a side view. A fuel tank 216 is provided behind the clutch switching device 270 between the threshing device 213 and the grain storage tank 215.

The fuselage frame 201 is provided with a main frame 201A extending in the longitudinal direction of the fuselage and a horizontal frame 201B extending in the horizontal direction of the fuselage while 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 base plate 305 is provided at the intersection, and the clutch switching device 270 is detachably mounted on and supported by the base plate 305.

The clutch switching device 270 includes a case 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, and an electric motor M (“actuator”). 1), a first cable wire 309A, a second cable wire 309B (an example of an “operation wire” of the “first linkage mechanism”), a third cable wire 309C, and an upper lid 310. The first arm 307A, the first cam 308A, and the first cable wire 309A correspond to the cutting clutch 251. The second arm 307B, the second cam 308B, and the second cable wire 309B correspond to the grain discharge clutch 237. The third arm 307C, the third cam 308C, and the third cable wire 309C correspond to the threshing clutch 240.

The case 306 houses the first arm 307A, the second arm 307B, the third arm 307C, the first cam 308A, the second cam 308B, and the third cam 308C, and is formed by a rectangular box-shaped member that opens upward. It is configured. The case 306 includes a bottom 311 and a side wall 312.

The portion of the bottom 311 opposite to the side where the first arm 307A, the second arm 307B, and the third arm 307C are located with respect to the first cam 308A, the second cam 308B, and the third cam 308C (the front of the bottom 311 Part) is formed with a cleaning port 311a. The cleaning port 311a is a round opening. A bottom cover 313 for opening and closing the cleaning port 311a is provided. A cutout portion 305 a is formed in a portion of the base plate 305 corresponding to the bottom lid 313 so as not to interfere with the bottom lid 313.

The side wall 312 includes a front wall portion 314, a rear wall portion 315, a left side wall portion 316, and a right side wall portion 317. Attachment portions 318 for attaching the case 306 to the base plate 305 are provided on the lateral outer side portion of the left side wall portion 316 and the lateral outer side portion of the right side wall portion 317, respectively. The attachment portion 318 is detachably fixed to the base plate 305 with a bolt 319. A nut 320 (welding nut) for the bolt 319 is provided on the back surface of the base plate 305.

The first arm 307A, the second arm 307B, and the third arm 307C can swing around the same swing axis X2 extending in the left-right direction of the machine body, and are arranged in the swing axis X2 direction. . The first arm 307A, the second arm 307B, and the third arm 307C are supported by the arm support shaft 321 so as to be relatively rotatable. The arm support shaft 321 is provided across the wall portions (the left wall portion 316 and the right wall portion 317) of the side wall 312 that face each other in the direction of the swing axis X2. The arm support shaft 321 is connected to the lower ends of the first arm 307A, the second arm 307B, and the third arm 307C. The arm support shaft 321 is provided with a stopper 322 for positioning the first arm 307A, the second arm 307B, and the third arm 307C at the initial position (wire drawing start position). The arm spindle 321 and the stopper 322 are connected via a stay 323. In a side view (see FIG. 26), the first arm 307A, the second arm 307B, and the third arm 307C at the wire pulling start position are slightly tilted forward, whereby the wire pulling start position and the wire pulling end are set. The stroke S over the position is increased so that it can be used for various 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 that can come into contact with the first cam 308A is provided at an upper and lower intermediate portion of the first arm 307A. A second roller 323B that can come into contact with the second cam 308B is provided at an upper and lower intermediate portion of the second arm 307B. A third roller 323C that can come into contact with the third cam 308C is provided at an upper and lower intermediate portion of the third arm 307C.

The end of the inner wire of the first cable wire 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 the end of the inner cable of the first cable wire 309A on the side of the cutting clutch 251.
No adjustment spring is provided between the upper end portion of the first arm 307A and the end portion of the inner wire of the first cable wire 309A on the first arm 307A side. The end of the inner wire of the second cable wire 309B on the second arm 307B side is connected to 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 309B on the second arm 307B side of the inner wire. The end of the inner wire of the third cable wire 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 inner cable of the third cable wire 309C on the threshing clutch 240 side. An adjustment spring is not provided between the upper end portion of the third arm 307C and the end portion of the inner wire of the third cable wire 309C on the third arm 307C side.

The first arm 307A, the second arm 307B, and the third arm 307C are supported by the 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 on a portion of the arm support shaft 321 that is closer to the left side wall 316 than the second arm 307B, and the third arm 307C is more of the arm support shaft 321 than the second arm 307B. Of these, it is supported by a portion close to the right side wall portion 317.

Here, normally, when the first arm 307A corresponding to the mowing clutch 251 pulls the first cable wire 309A, the third arm 307C corresponding to the threshing clutch 240 is used as the force acting on the first arm 307A. The force acting on the third arm 307C when pulling 309C is greater than the force acting on the second arm 307B when the second arm 307B corresponding to the grain discharge clutch 237 pulls the second cable wire 309B. That is, among the first arm 307A, the second arm 307B, and the third arm 307C, the arm having a larger force acting when pulling the first cable wire 309A, the second cable wire 309B, and the third cable wire 309C, 321 is supported by a portion close 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 around the same rotation axis X3 extending in the left-right direction of the machine body parallel to the swing axis X2, and the first arm 307A and the second arm 307B and the third arm 307C are provided so as to be aligned in the direction of the rotation axis X3. The first cam 308A, the second cam 308B, and the third cam 308C are supported by the cam support shaft 324 so as not to be relatively rotatable. The cam support shaft 324 is provided across the left side wall 316 and the right side wall 317. The left side wall 316 and the right side wall 317 are each provided with a bearing 325 that supports the cam support shaft 324 in a rotatable manner. The first cam 308A, the second cam 308B, and the third cam 308C are connected to the 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. The first cam 308A so that the positions of the hole 308Aa, the hole 308Ba, and the hole 308Ca around the rotation axis X3 are aligned (in other words, the hole 308Aa, the hole 308Ba, and the hole 308Ca overlap in the direction of the rotation axis X3). By attaching the second cam 308B and the third cam 308C to the cam support shaft 324, it is possible to prevent erroneous assembly of the first cam 308A, the second cam 308B, and the third cam 308C with respect to the cam support shaft 324.

A rotation angle detection sensor 327 for detecting the rotation angles of the first cam 308A, the second cam 308B, and the third cam 308C is provided. An attachment groove 324 a to which the rotation angle detection sensor 327 is attached is formed at the right end portion of the cam support shaft 324. The rotation angle detection sensor 327 is supported on the right side wall 317. A mounting portion 328 to which the rotation angle detection sensor 327 is attached is provided on the right side wall portion 317.

Here, as described above, when the attachment portion 328 is provided on the right side wall portion 317, it is necessary to attach the cam support shaft 324 to the case 306 with the attachment groove 324a positioned on the right side. If the cam spindle 324 is mistakenly attached to the case 306 with the attachment groove 324a positioned on the left side, the rotation angle detection sensor 327 cannot be attached to the cam spindle 324. You will notice that is attached in the opposite direction.

The first cable wire 309A links the first arm 307A and the cutting clutch 251 and is provided across the first arm 307A and the cutting clutch 251. The first cable wire 309A extends forward from the upper end of the first arm 307A, and extends in the horizontal direction toward the front while passing over the first cam 308A. The second cable wire 309B links the second arm 307B and the grain discharge clutch 237, and is provided across the second arm 307B and the grain discharge clutch 237. The second cable wire 309B extends forward from the upper end of the second arm 307B, and extends in the horizontal direction forward while passing over the second cam 308B. The third cable wire 309C links the third arm 307C and the threshing clutch 240, and is provided across the third arm 307C and the threshing clutch 240. The third cable wire 309C extends forward from the upper end of the third arm 307C, and extends in the horizontal direction forward while passing over the third cam 308C.

A support portion 329 for supporting the first cable wire 309A, the second cable wire 309B, and the third cable wire 309C is provided. The support portion 329 includes an end portion of the first cable wire 309A on the first arm 307A side of the outer wire, an end portion of the second cable wire 309B on the second arm 307B side, and a third cable wire 309C. The end of the outer wire on the third arm 307C side is supported. The support portion 329 is a side of the case 306 opposite to the side where the first arm 307A, the second arm 307B, and the third arm 307C are located with respect to the first cam 308A, the second cam 308B, and the third cam 308C. It is provided on the upper surface of the part (the front part of the side wall 312). The support portion 329 is configured by a substantially L-shaped plate material.

The upper lid 310 opens and closes a portion of the case 306 that opens upward, and is constituted by a rectangular box-shaped member that opens downward and forward. The first cable wire 309A, the second cable wire 309B, and the third cable wire 309C are passed through a portion of the upper lid 310 that opens forward. A portion of the upper lid 310 that opens forward is closed from the front by the support portion 329. The left and right sides of the rear lower portion of the upper lid 310 are fixed to the left side wall 316 and the right side wall 317 by bolts 330, respectively. Engaging protrusions 310 a that engage with the corners of the support portion 329 are formed on both the left and right sides of the front lower portion of the upper lid 310.

The electric motor M rotates 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 pinion 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 pinion gear 331, whereby the first cam 308A, the second cam 308B, and the third cam 308C are rotationally driven. become.

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

28, the control block is provided with a control device 334 that controls the drive of the electric motor M. A position detection sensor 282, a grain discharge operation unit 260, a rotation angle detection sensor 327, and an electric motor M are connected to the control device 334. The detection value of the position detection sensor 282, the clutch switching operation command of the grain discharge operation unit 260, and the detection value of the rotation angle detection sensor 327 are input to the control device 334. The control device 334 controls driving of the electric motor M according to the detection value of the position detection sensor 282. That is, the electric motor M operates in response to an operation input to the clutch switching lever 281.

FIG. 29 shows the rotational positions (neutral position N, first rotational position R1, second rotational position R2, and third rotational position R3) of the first cam 308A, the second cam 308B, and the third cam 308C. The first cam 308A corresponding to the mowing 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) around the rotation axis X3, and the grain discharge clutch 237 The second cam 308B corresponding to is rotated from the neutral position N to the other side (rear side) around the rotation axis X3. When the first cam 308A, the second cam 308B, and the third cam 308C are rotationally driven by the electric motor M, the first arm 307A, the second arm 307B, and the third arm 307C are respectively connected to the first cam 308A and the second cam 308A. The first arm 307A and the first arm 307A are swung rearward around the swing axis X2 by the action of the cam 308B and the third cam 308C (cam action on the first roller 323A, second roller 323B, and third roller 323C). Each of the second arm 307B and the third arm 307C pulls the first cable wire 309A, the second cable wire 309B, and the third cable wire 309C, so that the cutting clutch 251, the threshing clutch 240, and the grain discharging clutch 237 are moved. It is possible to switch between the on state and the off 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 are respectively connected to the first arm 307A, the second arm 307B, and the third arm 307C. No cam action. Therefore, the reaping clutch 251, the grain discharging clutch 237, and the threshing clutch 240 are in a disconnected state.

At the first rotational position R1, the third cam 308C cams the third arm 307C, and the first cam 308A and the second cam 308B do not cam the first arm 307A and the second arm 307B, respectively. . Therefore, the threshing clutch 240 is turned on, and the reaping clutch 251 and the grain discharging clutch 237 are turned off.

In the second rotational position R2, the first cam 308A and the third cam 308C cam on the first arm 307A and the third arm 307C, respectively, and the second cam 308B does not cam on the second arm 307B. . Therefore, the mowing clutch 251 and the threshing clutch 240 are turned on, and the grain discharging clutch 237 is turned off.

In the third rotational position R3, the second cam 308B cams the second arm 307B, and the first cam 308A and the third cam 308C do not cam the first arm 307A and the third arm 307C, respectively. . Therefore, the grain discharge clutch 237 is turned on, and the mowing clutch 251 and the threshing clutch 240 are turned off.

[First linkage mechanism, second linkage mechanism]
As shown in FIG. 31, the grain discharge clutch 237 is a belt tension type clutch having a tension pulley 237a. The grain discharge clutch 237 has a spring 237b that supports the tension pulley 237a in a suspended manner. The lower end of the spring 237b is connected to an arm 237c that supports the tension pulley 237a. The end of the spring 237b opposite to the tension pulley 237a, that is, the upper end 237d (an example of the “operation unit”) is connected to the end 309Ba of the second cable wire 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 cable wire 309B. That is, the end 237d of the spring 237b and the end 309Ba of the second cable wire 309B are detachable.

The end 309Bb on the side of the grain discharge clutch 237 in the outer casing of the second cable wire 309B is supported by the stay 340. The stay 340 is supported by the frame 208 a of the operation unit 208. The stay 340 is located above the spring 237b of the grain discharge clutch 237.

When the clutch switching lever 281 is operated to the third operation position O3, the control device 334 controls the drive of the electric motor M to move the first cam 308A, the second cam 308B, and the third cam 308C to the third rotational position. Move to R3. At the third rotational position R3, the second cam 308B cams on the second roller 323B, the second arm 307B swings rearward about the swing axis X2, and the second arm 307B moves to the second cable wire. Pull 309B. The second cable wire 309B pulls the upper end 237d of the spring 237b upward, and the tension pulley 237a moves upward. Then, the power of the engine E is transmitted to the grain discharging device 217. That is, the grain discharge clutch 237 turns on and off the power transmission to the grain discharger 217 according to the movement of the end 237d (operation part) opposite to the tension pulley 237a in the spring 237b. The second linkage 308B, the second roller 323B, the second arm 307B, and the second cable wire 309B constitute a first linkage mechanism G that links the electric motor M and the end 237d (operation portion) of the spring 237b. Yes.

The ordinary combine according to the present embodiment includes a second linkage mechanism H in addition to the first linkage mechanism G described above, as shown in FIGS. 22, 31, 32, and 34. The second linkage mechanism H links the second artificial operation tool J and the operation portion of the grain discharge clutch 237 (the end portion 237d of the spring 237b). The second linkage mechanism H includes a fourth cable wire 350 (an example of an “operation wire”).

As shown in FIG. 31, the end 350a on the grain discharge clutch 237 side of the inner wire of the fourth cable wire 350 is located in front of the end 309Ba of the second cable wire 309B. An end 350b on the grain discharge clutch 237 side in the outer casing of the fourth cable wire 350 is positioned in front of the end 309Bb of the outer casing of the second cable wire 309B and is supported by the stay 340.

As shown in FIGS. 32 and 33, the end 350c (an example of the “end on the second artificial operation tool side”) of the inner wire of the fourth cable wire 350 opposite to the grain discharge clutch 237 side is the driving The part 208 is supported on the rear surface of the frame 208b. The frame 208b is a part on the outer peripheral side of the body of the driving unit 208. That is, the end 350c of the fourth cable wire 350 is disposed on the outer peripheral side of the machine body. The frame 208b supports the dust cover 355 so that it can be opened and closed. The dust cover 355 closes the opening of the engine room ER.

For fixing the end portion 350c of the fourth cable wire 350, in detail, a headed pin 357 is inserted into the hole of the end portion 350c and the hole of the frame 208b from the rear, and the tip of the headed pin 357 is placed in the engine room ER. A lock pin 358 is inserted into the hole. An end 350d of the fourth cable wire 350 on the opposite side to the grain discharge clutch 237 side in the outer casing is supported by a stay 208c supported on the rear surface of the frame 208b.

As shown in FIGS. 31 and 34, the first linkage mechanism G and the second linkage mechanism H are configured to be replaceable with respect to the operation portion of the grain discharge clutch 237 (the end portion 237d of the spring 237b). Yes. 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 cable wire 309B. The end 350a of the fourth cable wire 350 is not connected to the spring 237b. In this state, the first linkage mechanism G links the electric motor M and the operation unit of the grain discharge clutch 237.

When a failure occurs in the clutch switching device 270 or the second cable wire 309B and the grain discharging device 217 cannot be operated by operating the clutch switching lever 281, the driver operates the grain discharging clutch 237. The grain discharging device 217 can be operated using the second linkage mechanism H by replacing the first linkage mechanism G with the second linkage mechanism H with respect to the portion (the end portion 237d of the spring 237b).

First, the driver removes the end 309Ba of the second cable wire 309B from the end 237d of the spring 237b. Then, the driver inserts the U-shaped portion of the end 237d of the spring 237b into the hole of the end 350a of the fourth cable wire 350 (the state shown in FIG. 34). Next, the driver opens the dustproof cover 355 and removes the lock pin 358 in the engine room ER from the headed pin 357. Then, the end portion 350c of the fourth cable wire 350 is removed from the frame 208b. When the driver pulls the end 350c of the fourth cable wire 350, the upper end 237d of the spring 237b is pulled upward, and the tension pulley 237a moves upward. Then, 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 linkage mechanism H links the end portion 350c of the fourth cable wire 350 and the end portion 237d of the spring 237b of the grain discharge clutch 237. In the present embodiment, the inner wire end 350 c of the fourth cable wire 350 corresponds to the second artificial operation tool J. That is, in the present embodiment, the second artificial operation tool J and the second linkage mechanism H are configured as an integral member.

[Another embodiment]
(1) In the above embodiment, the end portion 350c (second artificial operation tool J) of the fourth cable wire 350 is arranged on the outer peripheral side of the machine body. However, the end portion 350c of the fourth cable wire 350 may be disposed at another location. For example, as shown in FIG. 35, the end portion 350 c of the fourth cable wire 350 may be disposed in the operation unit 208. The end portion 350c of the fourth cable wire 350 is supported by a side panel 259 that is disposed on the side opposite to the boarding port 208d (to the left of the boarding port 208d) in the left-right direction of the machine unit 208.

Specifically, the fourth cable wire 350 extends upward from the stay 340 and is drawn into the driver 208 behind the driver seat 257. The fourth cable wire 350 extends forward from the rear portion of the side panel 259 on the upper surface of the side panel 259. An end portion 350 d of the fourth cable wire 350 in the outer casing is supported by a stay 259 b provided on the upper surface of the side panel 259. An end portion 350 c of the inner wire of the fourth cable wire 350 is supported by a pin 259 c erected on the upper surface of the side panel 259. Specifically, the hole of the end 350c is passed through the pin 259c.

When a failure occurs in the clutch switching device 270 or the second cable wire 209B and the grain discharging device 217 cannot be operated by the operation of the clutch switching lever 281, the driver performs the fourth operation arranged in the driving unit 208. The grain discharging device 217 can be operated using the cable wire 350. First, the driver changes the first linkage mechanism G to the second linkage mechanism H with respect to the operation portion (the end portion 237d of the spring 237b) of the grain discharge clutch 237 in the same manner as in the above embodiment. Next, the driver removes the end portion 350c from the pin 259c of the side panel 259 and pulls it. Then, as in the above 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 transmission belt 235 and the pulley 236a of the grain discharge transmission mechanism 236 are arranged on the left side of the drive case 236b. The stay 237e that supports the arm 237c of the tension pulley 237a is disposed on the left side of the pulley 236a. The drive case 236b is a mechanism that transmits power to a screw (not shown) of a grain discharging device 217 disposed in the lower part of the grain storage tank 215.

In this embodiment, as shown in FIG. 35, the transmission belt 235 of the grain discharge transmission mechanism 236, the pulley 236a, and the like are arranged on the right side of the drive case 236b. As shown in FIG. 36, the stay 237e that supports the arm 237c of the tension pulley 237a is disposed below the drive case 236b. By setting it as such an arrangement | positioning, the grain discharge clutch 237 can be comprised compactly. Further, it is preferable because swinging opening / closing around the axis Z1 of the grain storage tank 215 and adjustment work of the grain discharge transmission mechanism 236 and the grain discharge clutch 237 are facilitated.

(3) In the above embodiment, as shown in FIG. 26, the lower end of each arm (first arm 307A, second arm 307B, third arm 307C) of the clutch switching device 270 and each cam (first cam 308A). The lower ends of the second cam 308 </ b> B and the third cam 308 </ b> C) were close to the bottom 311 of the case 306. As a result, if scraps or the like enter the case 306 and accumulate on the bottom portion 311, the operation of the clutch switching device 270 may be hindered. In the above embodiment, the cleaning port 311 a is formed in the bottom 311 of the case 306 of the clutch switching device 270. Dust such as straw scraps can be discharged from the case 306 through the cleaning port 311a.

In this embodiment, the arm (first arm 307A, second arm 307B, third arm 307C) and the cam (first cam 308A, second cam 308B, third cam 308C) between the lower end and the bottom 311, A relatively large space SP is formed. In other words, the distance between the lower end of the arm and the cam and the bottom 311 is larger than the distance between the lower end of the arm and the cam and the bottom 311 in the above embodiment, and is more than half of the width in the left-right direction of the case 306. large. Accordingly, even when dust such as straw scraps enters the case 306, it is possible to prevent the clutch switching device 270 from being hindered. In the present embodiment, the cleaning port 311 a is provided in the lower part of the rear wall portion 315 of the case 306.

(4) In the above embodiment, the second artificial operation tool J and the second linkage mechanism H are configured as an integral member. However, the second artificial operation tool J and the second linkage mechanism H may be separate members.
For example, the second artificial operation tool J may be a lever, a knob, or the like different from the second linkage mechanism H. That is, the end 350c of the inner wire of the fourth cable wire 350 may be connected to a lever, a knob, or the like.

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

(6) In the said embodiment, the 1st linkage mechanism G and the 2nd linkage mechanism H are comprised so that replacement | exchange is possible with respect to the operation part (end part 237d of the spring 237b) of the grain discharge clutch 237. Specifically, the end 309Ba of the second cable wire 309B and the end 350a of the fourth cable wire 350 are detachable from the end 237d of the spring 237b. The end 309Ba of the second cable wire 309B, the end 350a of the fourth cable wire 350, or both of them may be permanently connected to the end 237d of the spring 237b. In other words, it may be connected in a non-detachable manner.

(7) The present invention is not limited to ordinary combine harvesters, various harvesting machines such as self-removing combine harvesters, carrot harvesters, corn harvesters, etc., paddy field work machines such as rice transplanters, or farm work machines, and earthwork machines It can be applied to various working machines such as construction machines.

[Third Embodiment]
EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated based on drawing. In the following description, the direction of arrow F is “front side” (see FIGS. 38 and 39), the direction of arrow B is “rear side” (see FIGS. 38 and 39), and the direction of arrow L is “ The left side of the aircraft (see FIG. 39) and the direction of the arrow R are the right side of the aircraft (see FIG. 39).

[Overall structure of the combine]
38 and 39 show an ordinary combine. The combine is provided with a traveling machine body having a machine body frame 401 and a crawler traveling device 402, and a cutting unit 403 for cutting planted cereals is provided in front of the traveling machine body. The harvesting unit 403 includes a scraping reel 404 that scrapes the planted cereal, a cutting blade 405 that cuts the planted stalk, and a scraping auger 406 that scrapes the harvested sorghum.

On the right side of the front part of the traveling machine body, a driving unit 407 on which the driver gets on is provided. The operation unit 407 is covered with a cabin 408. An engine room 409 is provided below the operation unit 407. An engine room 409 accommodates an engine 410, an exhaust gas treatment device 411, a cooling fan 412, a radiator 413, and the like. Above the engine room 409, an air cleaner 414, a precleaner 415, and the like that supply combustion air to the engine 410 are provided. Behind the mowing unit 403, a threshing device 416 for threshing the harvested cereal meal is provided. A feeder 417 is provided across the mowing unit 403 and the threshing device 416 to convey the harvested cereal meal toward the threshing device 416. A grain storage tank 418 for storing the grain after the threshing process is provided side by side with the threshing apparatus 416.

A grain discharging device 419 for discharging the grains in the grain storage tank 418 to the outside is provided. In the grain discharging device 419, a screw conveyor type vertical conveying unit 420 that conveys the grains in the grain storage tank 418 upward, and the grains from the vertical conveying unit 420 are conveyed toward the outside of the machine body. And a screw conveyor type lateral conveyance section 421. The grain discharging device 419 is configured to be rotatable around the axis Z1 of the vertical conveyance unit 420.

The grain storage tank 418 is swingable about the axis Z1 of the vertical conveyance unit 420, and is shown in a normal working posture retracted toward the body side as shown by a solid line in FIG. 39 and a virtual line in FIG. In this way, the posture can be switched between the maintenance posture projecting laterally outward.

The exhaust gas treatment device 411 is provided with a DPF (Diesel Particulate Filter) having a well-known configuration that collects and removes PM (Particulate Matter) contained in the exhaust gas. The exhaust gas treatment device 411 is configured to be switchable between an automatic mode for automatically performing a regeneration process for burning and removing the collected particulate matter and a prohibit mode for prohibiting the regeneration process. If the engine 410 continues to operate and the particulate matter continues to be collected in the state of switching to the prohibit mode, clogging occurs. Therefore, it is necessary to manually execute the regeneration process periodically.

[Operation section]
FIG. 40 shows a combine driving unit 407. The driver unit 407 includes a driver seat 422 on which an operator is seated, a front panel unit 423 positioned in front of the driver seat 422, and a side panel unit 424 that is positioned on the left side of the driver seat 422 and extends before and after the driver unit 407. Is provided. The side panel portion 424 is provided with a working clutch lever 425 for operating a cutting clutch and a threshing clutch (not shown), a traveling main transmission lever 426, a traveling auxiliary transmission lever 427, and the like.

The front panel unit 423 is provided at the front end of the operation unit 407. On the front panel unit 423, a steering lever 428 for changing the direction of travel of the aircraft, a liquid crystal display type meter panel 429 as a travel information display unit for displaying information on the travel state of the vehicle, and information on the exhaust gas treatment device 411 are displayed. In addition, an exhaust gas information display operation unit 430 for performing operations related to the information is provided. That is, the steering lever 428, the meter panel unit 429, and the exhaust gas information display operation unit 430 are provided at the front end portion of the operation unit 407, respectively. The meter panel unit 429 displays, for example, the engine speed as information on the running state.

In other words, an exhaust gas information display operation unit 430 is provided in front of the driver seat 422 in the front end of the driver 407. The exhaust gas information display operation unit 430 is provided between the steering lever 428 and the meter panel unit 429. Moreover, the exhaust gas information display operation unit 430 is provided in a state adjacent to the meter panel unit 429.

As shown in FIG. 41, the exhaust gas information display operation unit 430 is located adjacent to the human operation unit 431 where the human operation related to the exhaust gas processing device 411 is performed, and the human operation unit 431, and indicates the state of the exhaust gas processing device. And a status display unit 432.

The human 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 regeneration processing. The prohibition switch 433 includes a prohibition state display lamp 435 that is turned on when the exhaust gas treatment device 411 is switched to the prohibition mode and is turned off when the prohibition mode is cancelled. The reproduction switch 434 is provided with a reproduction state display lamp 436 that is turned on when the reproduction process is instructed and is turned off when the reproduction process is not instructed.

The state display unit 432 is provided with an operation state display lamp 437 that is turned on when the exhaust gas treatment device 411 is executing the regeneration process and is turned off when the regeneration process is not being 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.

[Transmission structure for grain discharge]
As shown in FIG. 42, the bottom of the grain storage tank 418 is provided with a bottom screw 438 for discharging the grain. Power from the engine 410 is transmitted to the front portion of the bottom screw 438. The lower end of the vertical conveyance unit 420 is interlocked with the rear end of the bottom screw 438, and the base end of the horizontal conveyance unit 421 is interlocked with the upper end of the vertical conveyance unit 420.

Power from the engine 410 is transmitted to the bottom screw 438 and the grain discharging device 419 through a belt tension type grain discharging clutch 439 so as to be intermittent. As shown in FIGS. 42 and 43, the grain discharge clutch 439 includes a pulley 440 provided on the output shaft of the engine 410 and a pulley 442 provided on a relay shaft 441 provided on the front part of the grain storage tank 418. A transmission belt 443 wound around the transmission belt 443 and a tension mechanism 444 acting on the transmission belt 443 are provided.

As shown in FIG. 43, the tension mechanism 444 is rotatable about a swing arm 446 that is swingably supported around the horizontal axis X with respect to the fixed bracket 445 and a swing end of the swing arm 446. A tension roller 447 supported. The swing arm 446 is configured to be swing-operated by the driving force of the electric motor 449 linked through the operation wire 448. When the operation wire 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 transmission belt 443 and switches to the transmission state. Change.

In this configuration, the grain discharge clutch 439 cannot be turned on and off when the electric motor 449 fails or when a malfunction occurs in the linkage mechanism. Therefore, even in such a case, an artificial operation mechanism 450 capable of discharging the grain by human operation is provided.

As shown in FIG. 43, the artificial 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 axis. . The fulcrum pin 451 is formed by bending a rod body into a substantially L shape in a side view, and one end portion is integrally fixed to the body frame 401, and the operation arm 452 is rotated by a bent portion 453 in a horizontal posture on the upper side. I support it as possible.

The operation arm 452 extends from the fulcrum pin 451 to the left and right sides so as to swing the balance around the fulcrum pin 451. The left side of the fulcrum pin 451 extends from the gap between the front end of the grain storage tank 418 and the radiator 413 to a position where it can be manually operated. The right side of the operation arm 452 extends to a position where it comes into contact with the lower end of the swing arm 446. When the left end portion of the operation arm 452 is pushed downward by hand or foot, the swing arm 446, that is, the tension roller 447 swings upward, and the grain discharge clutch 439 can be switched to the clutch engaged state. Therefore, even in an abnormal state such as failure of the electric motor 449, the grain in the grain storage tank 418 can be discharged to the outside.

[Support structure for the front of the fuselage]
Next, the frame structure around the driving unit 407 and the engine 410 at the front of the aircraft will be described.

As shown in FIGS. 42 and 44, an engine room 409 is constituted by an engine bonnet 454 covering the periphery of the engine 410 below the operation unit 407. The driver's seat 422 is supported by the top plate portion 454a of the engine bonnet 454. The engine bonnet 454 has a function of partitioning the internal space of the operation unit 407 and the engine room 409. In the engine room 409, a radiator 413 is provided on the right side of the engine 410, and a radiator support frame 455 having a rectangular frame shape is provided so as to surround the radiator 413. Although not shown, the radiator support frame 455 supports the radiator 413, and also supports a cooling fan 412 that generates the radiator cooling air, a fan shroud that guides the cooling air, and the like.

As shown in FIG. 44, a plurality of, specifically, two left and right rear vertical frames 456 and 457, which are arranged in the horizontal direction and are erected from the body frame 401, are provided behind the operation unit 407. . The rectangular tubular rear vertical frame 456 located on the right side is positioned at the rear side portion of the engine room 409 and has a lower end connected to the body frame 401 and extending upward.

42, the upper portion of the right rear vertical frame 456 is connected to the lower end portion of the rear wall portion 408A of the cabin 408. As shown in FIG. In other words, a front-rear extending portion 458 made of a rectangular tube material facing in the front-rear direction is connected to an upper end portion of the rear vertical frame 456 on the right side, and the front-rear extension portion 458 extends forward. The front end portion of the front-rear extending portion 458 is integrally connected to a position closer to the right than the center portion of the lower end portion of the rear wall portion 408A of the cabin 408 via a bracket 459 having a substantially U shape in plan view. The longitudinally extending portion 458 is reinforced by an oblique reinforcing member 460 connected to the rear vertical frame 456.

As shown in FIGS. 44 and 45, the upper part of a rectangular tubular 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 the rear side portion of the engine room 409 and has a lower end connected to the body frame 1 and extending upward. The upper end portion of the left rear vertical frame 457 is bolted to the right side portion of the side panel portion 424.

As shown in FIG. 44, in the state of standing up from the fuselage frame 401 on the side panel portion 424 opposite to the driver seat 422, that is, on the left lateral side, The second side vertical frame 462 having a rectangular tube shape located on the rear side of the first side vertical frame 461 is provided. The left side portion at the rear side portion of the side panel portion 424 is bolted to the middle portion of the first side vertical frame 461. In this way, the rear portion of the side panel portion 424 is firmly received and supported by the frame body on the left and right sides.

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

As shown in FIG. 45, on the left lateral side of the side panel portion 424, it is located below the front and rear intermediate portions of the side panel portion 424 in addition to the first side vertical frame 461 and the second side vertical frame 462. A third side vertical frame 463 and a fourth side vertical frame 464 positioned below the front end of the side panel 424. The third side vertical frame 463 and the fourth side vertical frame 464 are provided in a state of being erected from the body frame 401, and support the side panel unit 424 at the upper end.

The lower half of the third side vertical frame 463 is positioned on the rear side so as to bypass the transmission case 465 located on the lower side of the front, and the operation load of the main transmission lever 426 and the like of the side panel portion 424 is reduced. In order to support many places, the upper half is biased forward. A front-rear frame body 466 is erected and connected between the upper and lower intermediate part of the first side vertical frame 461 and the upper and lower intermediate part of the fourth side vertical frame 464, and strength reinforcement on the left side of the operating part 407 is achieved. .

A top plate support frame 467 for mounting and supporting the top plate portion 454a of the engine bonnet 454 is provided on the upper portion of the engine room 409. As shown in FIGS. 44 and 46, the top plate support frame 467 includes a front sideways frame structure 467A located on the front side and extending in the horizontal direction, and a rear sideways frame structure located on the rear side and extending in the horizontal direction. The body 467B and a plurality of front and rear frame structures 467C extending from the front horizontal frame structure 467A to the rear horizontal frame structure 467B are connected to each other.

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

The left side of the top support frame 467 is connected to the side panel 424 and the first side vertical frame 461. That is, the left end portion of the front horizontal frame structure 467A is bolted to the right vertical surface portion of the side panel portion 424. Also, the left side end portion of the rear sideways frame structure 467B and the right side surface portion of the first side vertical frame 461 are connected by bolts.

A pre-cleaner support 468 that supports the pre-cleaner 415 is provided at the upper end of the second side vertical frame 462. A laterally extending portion 469 extending toward the threshing device 416 side (left side) is provided on the lower left side surface of the precleaner support portion 468 of the second side vertical frame 462, and the laterally extending portion 469 extends. The side end is bolted to the side wall of the threshing device 416. On the opposite side of the laterally extending portion 469, a front-rear-facing locking tool 470 is provided. The locking tool 470 is a locking mechanism (not shown) for holding the grain storage tank 418 in a normal working posture.

The base end portion of the laterally extending portion 469 in the second side vertical frame 462 and the middle portion of the first side vertical frame 461 are connected by a front-rear connector 471. In this way, the first side vertical frame 461 and the second side vertical frame 462 are connected to each other so that the strength against the lateral load of the first side vertical frame 461 is secured and the threshing device 416 is connected. A complicated linkage mechanism such as a mechanism is not required to simplify the configuration.

The two rear vertical frames 456 and 457 are connected to the top plate support frame 467. Specifically, as shown in FIGS. 44, 45, and 46, a substantially U-shaped connecting bracket 473 in a side view is integrally connected to the left side of each of the two rear vertical frames 456 and 457, and A substantially U-shaped connecting bracket 474 in a side view is integrally connected to the rear side surface of the rear sideways frame structure 467B in the top plate support frame 467. Then, the connecting bracket 473 and the connecting bracket 474 are bolt-connected in a state where they are abutted back to back. By connecting in this way, the support strength in the frame structure around the operating unit and the engine is improved.

[Another embodiment]
(1) In the above embodiment, the top plate support frame 467 may be a lattice-shaped frame, a rectangular frame shape, or the like instead of the above-described configuration. It can be implemented in the form.

(2) In the above-described embodiment, the first side vertical frame 461 and the second side vertical frame 462 are connected. However, the first side vertical frame 461 and the second side vertical frame 462 may be connected.

(3) In the above embodiment, the top plate support frame 467 is connected to the first side vertical frame 461. However, the top plate 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. However, instead of this configuration, the side panel portion 424 is not connected to the first side vertical frame 461. It is good also as a structure.

(5) In the above embodiment, the precleaner 415 is supported on the upper end portion of the second side vertical frame 462. Instead of this configuration, the precleaner 415 is supported on the upper end portion of the rear vertical frame. The support object can be changed as appropriate.

(6) In the above embodiment, the operation unit 407 is covered with the cabin 408. However, the cabin 408 may be omitted.

(7) In the above embodiment, the exhaust gas information display operation unit 430 is configured to be provided between the steering lever 428 and the meter panel unit 429, but instead of this configuration, as shown in FIGS. The exhaust gas information display operation unit 430 may be provided on the side opposite to the steering lever 428 with respect to the meter panel unit 429 in the left-right direction of the body. In that case, as shown in FIG. 47, the exhaust gas information display operation unit 430 is not limited to being provided at the front portion of the driver's seat 422, and as shown in FIG. 48, the left end of the front end of the driver 407. It is good also as a structure provided in the state located in the corner | angular part.

The corner portion here may be configured as a left end portion of the front panel portion 423 as a configuration in which the front panel portion 423 is formed long in the left-right direction, and a configuration in which the side panel portion 424 is formed long in the front-back direction. Alternatively, it may be configured as a front end portion of the side panel portion 424.

(8) In the above embodiment, the driving unit 407 is provided with the steering lever 428, but instead of this configuration, as shown in the following (8-1) to (8-4), the driving unit 407 Among these front end portions, a steering wheel 476 having a circular grip portion may be provided in front of the driver seat 422, and the exhaust gas information display operation portion 430 may be provided at the front end portion of the driver portion 407.

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

(8-2) As shown in FIG. 50, the exhaust gas information display operation unit 430 is positioned on the outer peripheral side of the steering wheel 476 when viewed from the driver seated on the driver seat 422 and adjacent to the left side of the steering wheel 476. Configuration provided in the state

(8-3) As shown in FIG. 51, the exhaust gas information display operation unit 430 is provided in a state of being located at the corner of the left end of the front end of the operation unit 407. The corners here are the same as described in (1) above.

(8-4) As shown in FIG. 52, the exhaust gas information display operation unit 430 is positioned on the outer peripheral side of the steering wheel 476 when viewed from the driver seated on the driver seat 422 and adjacent to the right side of the steering wheel 476. Configuration provided in the state

(9) In the above-described embodiment, information on whether or not the exhaust gas treatment device 411 is executing the regeneration processing, and whether or not the exhaust gas treatment device 411 is in a state to be regenerated as information on the regeneration processing. The information about or is displayed, but any one of them may be displayed.

(10) In the above-described embodiment, the exhaust gas information display operation unit 430 displays information related to the regeneration process in the exhaust gas processing apparatus 411. However, other types of information may be displayed.

(11) The present invention may be applied to a self-removing combine that is limited to a general combine, and may be applied to other types of harvesters such as a corn harvester in addition to a combine.

3 Driving part 5 Engine 7 Harvesting part (harvesting part)
8 Threshing device 10 Feeder (conveyance unit)
13 Exhaust treatment device 17 First exhaust pipe part (bent part)
DESCRIPTION OF SYMBOLS 30 Bending part cover 30a Upper surface part 30b Side cover part 40 Connection frame 50 Exhaust treatment device cover A Exhaust pipe S1 Crevice 208 Operation part 208b Frame 208d Boarding port 215 Grain storage tank 217 Grain discharge device 236a Pulley 237 Grain discharge clutch ( clutch)
237a Tension pulley 237b Spring 237d End 259 Side panel 281 Clutch switching lever (first human operation tool)
309B Second cable wire (operation wire)
309Bb End 340 Stay 350 Fourth cable wire (operation wire)
350b End portion 350c End portion G First linkage mechanism H Second linkage mechanism J Second artificial operation tool M Electric motor (actuator)
407 Driving section 409 Engine room 410 Engine 413 Radiator 411 Exhaust gas treatment device 422 Driving seat 423 Steering panel section 424 Side panel section 428 Steering lever 429 Travel information display section 430 Exhaust gas information display operation section 454 Engine bonnet 454a Top plate section 455 Radiator support Frames 456 and 457 Rear vertical frame 461 First side vertical frame 462 Second side vertical frame 467 Top plate support frame 467A Front side horizontal frame component 467B Rear side horizontal frame component 467C Front and rear side frame component 476 Steering wheel

Claims (29)

1. A harvesting section that is installed at the front of the aircraft and harvests crops in the field;
   A transport unit that is provided on one side of the aircraft and transports the crop harvested by the harvesting unit;
   An operating unit provided on the other side of the aircraft;
   An exhaust treatment device that is disposed below the operating unit and that treats exhaust gas from the engine;
   An exhaust pipe for discharging exhaust from the exhaust treatment device,
   The exhaust pipe extends from the exhaust treatment device toward the transport unit, bends backward, and extends rearward between the transport unit and the operation unit,
   The harvesting machine provided with the bending part cover which covers the bending part to the back of the said exhaust pipe from upper direction.
2. The harvester according to claim 1, wherein an upper surface portion of the bent portion cover is inclined.
3. A side cover portion is provided in a portion of the bent portion cover on the transport portion side,
   The harvester according to claim 1 or 2, wherein the lateral cover portion extends to a lower side than a lower end of the bent portion.
4. A threshing device that is provided on the rear side of the transport unit and threshs the harvested product harvested by the harvesting unit;
   A connecting frame that connects the operating unit and the threshing device,
   The harvester according to any one of claims 1 to 3, wherein the bent portion cover is supported by the connection frame.
5. An exhaust treatment device cover that is supported by the operating unit and covers the exhaust treatment device from the transport unit side is provided,
   The exhaust pipe is provided through the exhaust treatment device cover,
   The harvester according to any one of claims 1 to 4, wherein the bent portion cover is supported by the exhaust treatment device cover.
6. A gap for allowing air to flow into the exhaust pipe from the outside to the inside is formed in a downstream portion of the bent portion of the exhaust pipe, and the bent portion cover is disposed in front of the gap. The harvester according to any one of 5.
7. A clutch that turns on and off the power transmission to the work device according to the movement of the operation unit;
   An actuator that operates in response to an operation input to the first artificial operation tool;
   A first linkage mechanism that links the actuator and the operation unit;
   A working machine comprising: a second linkage mechanism that links a second artificial operation tool and the operation unit.
8. The work machine according to claim 7, wherein the first linkage mechanism and the second linkage mechanism are configured to be replaceable with respect to the operation unit.
9. The clutch is arranged on the center side of the fuselage,
   The work machine according to claim 7 or 8, wherein the second linkage mechanism includes an operation wire, and an end portion of the operation wire on the second artificial operation tool side is disposed on an outer peripheral side of the machine body.
10. An operation part, a grain storage tank that is arranged behind the operation part and stores the grain obtained by the threshing process, and a grain discharge as the working device that discharges the grain from the grain storage tank An apparatus,
    The clutch turns on and off the power transmission to the grain discharging device, and is disposed between the operation unit and the grain storage tank,
    The work machine according to claim 9, wherein an end portion of the operation wire of the second linkage mechanism on the second artificial operation tool side is supported by an outer peripheral side portion of a frame of the operation unit.
11. It has a driving part,
    The clutch is arranged on the center side of the fuselage,
    The work machine according to claim 7 or 8, wherein the second linkage mechanism includes an operation wire, and an end portion of the operation wire on the second artificial operation tool side is disposed in the operation unit.
12. A grain storage tank that is disposed behind the operation unit and stores the grains obtained by the threshing process, and a grain discharge device as the working device that discharges the grains from the grain storage tank. Prepared,
    The clutch turns on and off the power transmission to the grain discharging device, and is disposed between the operation unit and the grain storage tank,
    The end portion of the operation wire of the second linkage mechanism on the second artificial operation tool side is supported by a side panel disposed on the side opposite to the boarding gate in the left-right direction of the aircraft. 11. The working machine according to 11.
13. The first linkage mechanism includes an operation wire, and an end portion on the clutch side in the outer casing of the operation wire is supported by the stay,
    The work machine according to any one of claims 7 to 12, wherein the second linkage mechanism includes an operation wire, and an end portion on the clutch side of the outer casing of the operation wire is supported by the stay.
14. The clutch is a belt tension type clutch having a tension pulley,
    The working machine according to claim 13, wherein an end portion of the spring that supports the suspension of the tension pulley on the side opposite to the tension pulley is the operation portion, and the stay is positioned above the spring.
15. A driving unit having a driver seat;
    An engine located below the operating unit;
    An engine hood that covers the periphery of the engine and constitutes an engine room, and supports the driver's seat by a top plate portion;
    A plurality of rear vertical frames that are arranged in a lateral direction and are erected from the body frame at the rear of the operation unit, and a top plate support frame that supports the top plate portion of the engine bonnet are provided. A harvesting machine in which each of the rear vertical frames is connected to the top plate support frame.
16. A side panel is provided on the side of the driver seat,
    The harvesting machine according to claim 15, wherein a rear end portion of the side panel portion is supported by a rear vertical frame provided behind the side panel portion among the plurality of rear vertical frames.
17. On the lateral side opposite to the driver seat of the side panel portion, a first side vertical frame is provided in a state standing from the fuselage frame,
    The harvester according to claim 16, wherein the top plate support frame is connected to the first side vertical frame.
18. The harvesting machine according to claim 17, wherein the side panel portion is supported by the first side vertical frame.
19. Behind the first side vertical frame, a second side vertical frame is provided in a state standing from the body frame,
    The harvester according to claim 17, wherein the first side vertical frame and the second side vertical frame are connected.
20. The top plate support frame includes a front lateral frame structure that extends laterally and is positioned on the front side, a rear lateral frame structure that extends laterally and is positioned on the rear side, and the front lateral frame structure The harvesting machine according to any one of claims 15 to 19, wherein each of a plurality of front and rear frame structures extending from the rear to the rear side frame structure is connected to each other.
21. A radiator for cooling the engine on the lateral outer side of the engine, and a radiator support frame that is erected from the body frame and supports the radiator,
    The harvesting machine according to any one of claims 15 to 20, wherein the top plate support frame is connected to the radiator support frame.
22. An exhaust gas treatment device for purifying exhaust gas from the engine;
    An exhaust gas information display operation unit for displaying information related to the exhaust gas treatment device and performing an operation related to the information is provided.
    The harvester according to any one of claims 15 to 21, wherein the exhaust gas information display operation unit is provided at a front end portion of the operation unit.
23. 23. The harvester according to claim 22, wherein the exhaust gas information display operation unit is provided in a front part of the driver seat at a front portion of the driver seat.
24. A travel information display unit that displays information on the travel state of the aircraft is provided at the front end of the driving unit, and a steering lever is provided at the front end of the driving unit,
    The harvester according to claim 22 or 23, wherein the exhaust gas information display operation unit is provided between the steering lever and the travel information display unit.
25. A traveling information display unit that displays information on the traveling state of the aircraft is provided at the front end of the driving unit,
    The exhaust gas information display operation unit is provided adjacent to the travel information display unit,
    A steering lever is provided at the front end of the driving unit,
    The harvesting machine according to claim 22 or 23, wherein the exhaust gas information display operation unit is provided on a side opposite to the steering lever with respect to the travel information display unit in a lateral direction of the machine body.
26. A steering wheel is provided at a front portion of the driver seat among the front ends of the driver,
    The exhaust gas information display operation unit is provided in a state of being located on the inner peripheral side of the steering wheel as viewed from a driver seated on the driver seat,
    A steering panel is provided at the front end of the driving unit,
    The harvester according to claim 22 or 23, wherein the exhaust gas information display operation unit is provided in the control panel unit.
27. A steering wheel is provided at a front portion of the driver seat among the front ends of the driver,
    The exhaust gas information display operation unit is provided in a state located on the outer peripheral side of the steering wheel as viewed from a driver seated on the driver seat and in a state adjacent to the steering wheel,
    A steering panel is provided at the front end of the driving unit,
    The harvester according to claim 22 or 23, wherein the exhaust gas information display operation unit is provided in the control panel unit.
28. A steering wheel is provided at a front portion of the driver seat among the front ends of the driver,
    The exhaust gas information display operation unit is provided in a state located on the outer peripheral side of the steering wheel as viewed from a driver seated on the driver seat and in a state adjacent to the steering wheel,
    On the side of the driver's seat, a side panel portion extending before and after the driver is provided,
    The harvester according to claim 22 or 23, wherein the exhaust gas information display operation unit is provided at a front end portion of the side panel unit.
29. The exhaust gas treatment device executes a collection process for collecting particulate matter and a regeneration process for burning and removing the collected particulate matter,
    The exhaust gas information display operation unit displays information related to the regeneration process in the exhaust gas treatment device,
    The information related to the regeneration process is information about whether or not the exhaust gas treatment apparatus is executing the regeneration process, and information about whether or not the exhaust gas treatment apparatus is in a state to be regenerated. 29. A harvester according to any one of claims 22 to 28.

Images