JP2014097037A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a mounting environment for an exhaust treatment device.SOLUTION: A combine harvester includes an operating and steering section, a diesel engine 15 that is provided below the operating and steering section, and an exhaust treatment device 33 that performs exhaust gas cleanup treatment by introducing exhaust gas from the diesel engine 15. The exhaust treatment device 33 is arranged in the state of partially getting into a lower space of the operating and steering section in a plan view. An upper portion of the exhaust treatment device 33 is covered with a cover 36 supported by the operating and steering section, and the operating and steering section 13.

Description

  The present invention relates to a combine equipped with an exhaust treatment device.

For example, in a combine shown in Patent Document 1, an engine such as a diesel engine is mounted on a prime mover. In recent years, exhaust gas regulations have been becoming stricter, and in the case of combine as well, an exhaust treatment device that performs exhaust gas purification processing by introducing engine exhaust gas in order to reduce particulate matter contained in the exhaust gas. It has been proposed to wear.
The exhaust treatment device is equipped with a particulate collection filter that removes particulate matter in the exhaust gas. The particulate collection filter removes particulate matter in the exhaust gas and discharges it outside the machine. The amount of particulate matter is reduced.

JP 2010-213605 A

  The exhaust gas discharged from the engine is introduced into the exhaust treatment device at a high temperature. In addition, the particulate collection filter of the exhaust treatment device becomes clogged with particulate matter and deteriorates its function during continuous use, so the exhaust treatment device collects the particulate collection filter on the particulate collection filter. Some have a self-cleaning function for burning the particulate matter with a heater or the like. For this reason, the exhaust treatment apparatus usually has a relatively high surface temperature.

  However, by simply attaching the exhaust treatment device thus heated to a combine that mainly harvests rice, wheat, etc., dust such as dried straw scraps scattered around the combine comes into contact with the exhaust treatment device. This is not preferable.

  In view of the above circumstances, an object of the present invention is to provide a combine that improves the installation environment of an exhaust treatment device.

  The features of the combine of the present invention include a driving control unit, an engine provided below the driving control unit, and an exhaust treatment device that introduces exhaust gas of the engine and purifies the exhaust gas. The exhaust treatment device is disposed in a state where a part of the exhaust treatment device enters a lower space of the operation control unit in a plan view, and an upper portion of the exhaust treatment device is provided with a cover supported by the operation control unit and the It is in the point covered with the driving control part.

  According to this characteristic configuration, the exhaust treatment device is disposed in a state where a part of the exhaust treatment device enters the lower space of the operation control unit in a plan view. For this reason, it is possible to arrange the exhaust treatment device in a compact manner without taking up space in the lateral direction of the airframe by utilizing the space below the operation control unit. The upper part of the exhaust treatment device is covered with a cover supported by the driving control unit and the driving control unit. For this reason, the possibility that dust such as straw scraps scattered from above will come into contact with the exhaust treatment device that has become hot during operation is reduced by the cover and the operation control unit. Therefore, the installation environment of the exhaust treatment device is improved.

  In the present invention, the driving control unit includes a driving seat and a side panel provided on a side of the driving seat and provided with a plurality of operation tools, and the exhaust treatment device includes the side panel. It is preferable that it is disposed in a state where it enters the lower space.

  Generally, a feeding device that conveys the harvested cereal rice cake from the harvesting unit to the threshing device is arranged outside the side of the side panel, so that the side space of the side panel has dust such as straw scraps. The environment is easy to dance.

  According to this configuration, the exhaust treatment device is disposed in a state in which a part thereof enters the lower space of the side panel, and the upper portion of the exhaust treatment device is covered with the cover and the side panel supported by the side panel. It will be. For this reason, a cover and a side panel reduce possibility that dust, such as straw scraps scattered from the upper part, will come into contact with an exhaust treatment device that has become hot during operation.

  In the present invention, it is preferable that detection means for detecting the state of the exhaust treatment device is attached to a portion of the exhaust treatment device that does not enter the lower space of the operation control unit.

  As in this configuration, by attaching the detection means to a portion of the exhaust treatment device that does not enter the space below the operation control unit, maintenance of the detection means is facilitated.

  In the present invention, it is preferable that the cover is configured to cover the detection means from above.

  According to this configuration, since the cover is configured to cover the detection unit from above, the detection unit can be protected from dust such as straw scraps scattered from above together with the exhaust treatment device.

  In the present invention, it is preferable that the cover is configured such that at least a side opposite to the operation control unit is opened in a space between the cover and the exhaust treatment device.

  Although the exhaust treatment device becomes hot during operation, according to this configuration, the cover is configured such that at least the side opposite to the operation control unit is opened in the space between the cover and the exhaust treatment device. Therefore, the heat of the exhaust treatment device is released from the space between the cover and the exhaust treatment device to the outside air on the side opposite to the operation control unit, and the heat is prevented from getting into the space between the cover and the exhaust treatment device. it can.

  In the present invention, it is preferable that the cover is configured such that at least the front and rear sides of the fuselage are opened in the space between the cover and the exhaust treatment device.

  Although the exhaust treatment device becomes hot during operation, according to this configuration, the cover is configured so that at least the front and rear sides of the fuselage are opened in the space between the cover and the exhaust treatment device. It is possible to prevent the heat of the apparatus from being released from the space between the cover and the exhaust treatment device to the outside air in the front-rear direction of the fuselage, and the heat from entering the space between the cover and the exhaust treatment device.

  In the present invention, it is preferable that the cover is formed in a shape that is inclined so as to be positioned downward as it is separated from the driving control unit.

  According to this configuration, the cover is formed in a shape that is inclined so as to be positioned downward as it moves away from the driving control unit, so that dust such as straw scraps falling on the upper surface of the cover is separated from the driving control unit of the cover. It will fall naturally to the side, and it will be hard to deposit straw scraps etc. on the upper surface of the cover.

  In the present invention, it is preferable that the driving control unit is provided with a support member along the longitudinal direction of the body, and the cover is attached to the support member.

  According to this configuration, the dedicated support member can be made unnecessary by using the existing support member in the operation control unit as the support member of the exhaust treatment device. In addition, the cover can be supported stably and widely in the front-rear direction by the support member.

  In the present invention, a cabin is provided in the operation control section, a window portion is provided on a side surface of the cabin where the exhaust treatment device enters, and the support member supports the window portion from below. It is preferable that

  According to this configuration, an existing support member that supports the window portion of the cabin from below is also used as a support member of the exhaust treatment device, so that a dedicated support member can be omitted.

  In the present invention, it is preferable that a bracket connected to the support member and extending outward from the airframe is provided, and the cover is attached to the bracket.

  According to this configuration, the cover can be attached to a location separated outward from the body via the bracket, so that the cover can be easily attached.

  In the present invention, it is preferable that the end of the cover is connected to the bracket from above by a fastener in the vertical direction.

  According to this configuration, the cover can be attached by operating the fastener in the vertical direction using a tool or the like outside the machine body, and the cover can be attached more easily.

  In the present invention, it is preferable that the exhaust treatment device is disposed so that the longitudinal direction of the body is the longitudinal direction, and the cover is disposed so that the longitudinal direction of the body is the longitudinal direction.

  According to this configuration, the cover and the exhaust treatment apparatus are arranged so that the longitudinal direction of the machine body is the longitudinal direction in accordance with the exhaust treatment apparatus arranged such that the longitudinal direction of the machine body is the longitudinal direction. Can be arranged compactly in the lateral direction of the fuselage.

  In the present invention, the exhaust treatment device is supported by the engine, and is provided with a buffer mechanism for buffering vibrations of a fuselage between the engine frame and the engine frame that supports the engine. A pin member provided on either the engine side or the body frame side; and a boss-like member provided on either the engine side or the body frame side, covering the circumferential direction of the pin member; It is preferable that a rubber member provided over the entire circumference between the pin member and the boss-like member is provided.

  According to this configuration, the vibration of the engine is prevented from being transmitted to the body frame by the rubber member provided over the entire circumference between the pin member and the boss-like member in the buffer mechanism. The vibration from the engine is transmitted to the rubber member as a compressive force in the radial direction of the pin member, and the shearing force hardly acts on the rubber member. For this reason, it becomes a highly durable shock-absorbing mechanism in which the rubber member is difficult to cut, and the shock-absorbing mechanism lasts for a long time. Therefore, the engine can be stably supported by the body frame via the buffer mechanism, and hence vibration to the exhaust treatment device supported by the engine can be reduced, and the exhaust treatment device can be stably supported.

  In the present invention, it is preferable that the buffer mechanism is disposed at a portion on the output shaft side of the engine.

  In general, the input shaft of another device is connected to the output shaft side of the engine via a transmission belt, for example. Force is applied.

  According to this configuration, the engine can be stably supported on the fuselage frame by arranging a highly durable shock absorbing mechanism at the output side portion of the engine where a large pulling force acts in this way. It is possible to stably support the exhaust treatment device by reducing vibration to the supported exhaust treatment device.

  In the present invention, it is preferable that a threshing device is provided on the opposite side and the rear side of the operation control unit in the lateral direction of the machine body, and the output shaft of the engine is connected to the input shaft of the threshing device.

  According to this configuration, the threshing device that requires particularly large power in the combine is provided on the opposite side and the rear side of the driving control unit in the lateral direction. Generally, the output shaft of the engine that supports the discharge processing device is connected to the input shaft of the threshing device on the rear side via a transmission belt. A large pulling force in the orthogonal direction is applied from the threshing device. By disposing a highly durable shock absorbing mechanism at the output side of the engine where such a large pulling force acts, the engine can be stably supported on the fuselage frame, and thus the exhaust treatment device supported by the engine. The exhaust treatment device can be stably supported by reducing the vibration of the exhaust.

It is a right view which shows the whole combine. It is a left view which shows the whole combine. It is a top view which shows the whole combine. It is a right view which shows a driving | operation control part and a drive part. It is a left view which shows a driving | operation control part and a drive part. It is a top view which shows a driving | operation control part and a drive part. It is a front longitudinal section of a driving control part and an engine bonnet. It is front sectional drawing of a driving | operation control part and an engine bonnet. It is a left view which shows a drive part. It is a top view explaining rocking | fluctuation opening / closing of a cutting part. It is a left view of a connection exhaust pipe. It is XII-XII sectional drawing in FIG. It is XIII-XIII sectional drawing in FIG. It is XIV-XIV sectional drawing in FIG. It is a perspective view of a 2nd eject pipe. It is a perspective view of a 3rd eject pipe and a 4th eject pipe. It is a top view of a diesel engine. It is a plane sectional view of the 2nd engine mount. It is a disassembled perspective view of a 2nd engine mount.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Overall structure of the combine]
As shown in FIGS. 1 to 3, the combine performs harvesting operations such as rice and wheat, and is configured to self-run by a pair of left and right crawler travel devices 11. The combine includes a passenger-type driving control unit 13 equipped with a cabin 12 and a driving unit 16 equipped with a diesel engine 15 (corresponding to an “engine”) located below the driver seat 14. A traveling machine body provided at one side end of the machine body at the front end is provided. In addition, the combine includes a cutting unit 18 connected to the vehicle body frame 17 of the traveling vehicle body on the other side of the vehicle body side of the driving control unit 13, and the other side of the vehicle body on the opposite side of the vehicle operation unit 13 in the lateral direction of the vehicle body. A threshing device 19 disposed on the rear side and a grain tank 20 disposed on the side of the body side of the threshing device 19 on the rear side of the body frame 17 of the traveling body are provided.

[Mowing section]
The reaping portion 18 is provided with a reaping portion frame 18 a that extends from the body frame 17 so as to be swingable up and down. The mowing unit 18 is moved down by the mowing unit frame 18a being swung by the elevating cylinder 21, so that the weeding tool 18b arranged in parallel to the front end of the mowing unit 18 in the lateral direction of the machine body is lowered to the ground. It is comprised so that raising / lowering operation may be carried out between a state and the raising non-working state where the weeding tool 18b was raised high from the ground. By causing the cutting unit 18 to move down and causing the traveling machine body to travel, the cutting unit 18 introduces and raises the planted culm to be cut into the rear pulling device 18c by the weeding tool 18b. Then, the planted culm to be subjected to the pulling process is harvested by the clipper-shaped cutting blade 18d, and the harvested culm is conveyed backward by the supply device 18e, and the harvested culm by the guide member 23 of the threshing device 19 It is configured to guide and supply to the threshing feed chain 24.

[Threshing equipment]
The threshing device 19 performs the threshing process by supplying the tip side to the handling room while sandwiching and transporting the stock side of the harvested cereal meal supplied by the supply device 18e to the rear side of the machine body by the threshing feed chain 24. The grain tank 20 stores the threshed grains fed from the threshing device 19 and carries out the stored threshed grains by an auger 25 formed of a screw conveyor. A protective member 26 that covers the upper side of the threshing feed chain 24 is provided at a location on the other side of the machine body that is in front of the threshing device 19 in the traveling machine body and on the opposite side of the machine control unit 13 in the machine body lateral direction.

[Drive control section]
As shown in FIGS. 1 to 8, the driving control unit 13 is provided above the engine bonnet 27 at a location on the front side and on the lateral side of the vehicle body. Inside the cabin 12 equipped in the driver's control unit 13 is a driver's seat 14, a front panel 28 disposed in front of the driver's seat 14, and the other side of the aircraft that is opposite to the driver's seat 14 in the lateral direction of the aircraft. And a side panel 29 disposed on the side. The side panel 29 includes a shift lever 31 (corresponding to “operating tool”) for shifting the travel transmission 30 and a cutting clutch lever 32 (corresponding to “operating tool”) for driving and stopping the cutting part 18. A plurality of operating tools are provided so as to be swingable.

  As shown in FIGS. 2, 5, and 7, a window portion 34 is provided on the side surface of the side panel 29 located on the other side of the cabin 12 of the cabin 12 of the driving control portion 13. The window 34 is supported from below by a support member 35 arranged along the front-rear direction of the body of the side panel 29.

(Moving part)
As shown in FIG. 1, FIG. 2, and FIG. 5 to FIG. 9, the prime mover 16 is provided with a diesel engine 15 in a state of being mounted in an engine bonnet 27. An exhaust treatment device 33 is supported on the diesel engine 15. The engine bonnet 27 is provided with a front wall portion 27a positioned on the front side of the diesel engine 15 and a top plate portion 39 positioned above the diesel engine 15 (see particularly FIG. 4).

  As shown in FIGS. 5, 9, and 17, the diesel engine 15 is supported and mounted on the body frame 17 in a mounting posture in which the direction of the output shaft 15 a is the lateral direction of the body. As shown in FIGS. 7 and 8, the diesel engine 15 is connected to the diesel engine 15 via a cooling water circulation pipe 44 between the diesel engine 15 and the intake wall 43 provided at the outer side of the engine bonnet 27. The engine cooling radiator 45 is supported by the body frame 17 and provided. In addition, a cooling fan 46 is provided between the radiator 45 and the diesel engine 15 so as to be rotatably driven with respect to the diesel engine 15. The diesel engine 15 is air-cooled by driving the cooling fan 46.

  A number of intake holes are formed in the intake wall 43. When the cooling fan 46 is rotationally driven by the diesel engine 15, air outside the engine bonnet 27 is sucked into the engine bonnet 27 from the intake holes of the intake wall 43, and engine cooling air that cools the diesel engine 15 is generated. Generated. Inside the engine bonnet 27, the engine cooling air flows in the lateral direction of the airframe from the lateral side of the body toward the lateral side of the body, and the engine cooling air is supplied to the radiator 45. After heat exchange between the engine cooling air and the cooling water is performed by the radiator 45, the engine cooling air is supplied to the diesel engine 15.

  As shown in FIGS. 1, 2, 4, and 5, a pre-air cleaner 52 supported by a support portion 51 in the ceiling portion 50 is provided near the rear of the ceiling portion 50 of the cabin 12. An air cleaner 54 is provided in the air cleaner chamber 53 formed behind the driver seat 14. As shown in FIGS. 5 and 7 to 9, a supercharger 55 is provided in the vicinity of the front side above the diesel engine 15 in the engine bonnet 27. The supercharger 55 is driven by exhaust gas discharged from the diesel engine 15.

  Air outside the engine bonnet 27 is sucked into the pre-air cleaner 52 to remove dust, and the air after dust removal is sucked into the air cleaner 54 to remove dust again. The air after dust removal is sucked into the supercharger 55 to generate compressed air, and the compressed air is sent to the intercooler 56 and cooled, and supplied to the diesel engine 15 as combustion air. The

[Exhaust treatment equipment]
As shown in FIG. 1 to FIG. 3 and FIG. 5 to FIG. 10, an exhaust process configured to purify exhaust gas discharged from the diesel engine 15 and then discharge it outside the engine inside the engine bonnet 27. A device 33 is provided. The exhaust treatment device 33 is connected to the upper portion of the diesel engine 15 via a support body 95 and is supported in a posture in which the longitudinal direction is the longitudinal direction of the body. The exhaust treatment device 33 is disposed at a position that is biased toward the cutting portion 18 on the other side of the fuselage with respect to the driver seat 14. The exhaust treatment device 33 is disposed in a state where a part of the exhaust treatment device 33 enters the space below the window 34 of the side panel 29 in the operation control unit 13 in plan view. In other words, the exhaust treatment device 33 has an engine bonnet 27 so that the other part protrudes from the side panel 29 in the cabin 12 of the operation control unit 13 toward the protective member 26 on the other side of the body in plan view. It is arranged so as to protrude from the opening 27c located at the side end of the other side of the machine body toward the cutting portion 18 side (see in particular FIG. 8).

  The top plate portion 39 of the engine bonnet 27 includes an air cleaner lower portion 40 located on one side of the airframe, a vertical plate portion 41 extending upward from the airframe lower side end portion of the air cleaner lower portion 40, and a vertical plate portion 41. The apparatus upper part 42 extended from the board part 41 to the machine body other side is provided (refer FIG. 4). In other words, the device upper portion 42 is positioned above the air cleaner lower portion 40, thereby forming a space for the exhaust treatment device 33 to enter below the device upper portion 42 in the top plate portion 39.

  As shown in FIGS. 7 to 9, the exhaust treatment device 33 includes an exhaust gas introduction port 57 and an exhaust gas discharge port 58 at both ends in the longitudinal direction of the exhaust treatment device 33. The exhaust gas introduction port 57 is located on the lower surface of the front side of the body of the exhaust treatment device 33. The exhaust gas discharge port 58 is located on the side surface on the other side of the machine body at the rear side of the machine body in the exhaust treatment device 33. An exhaust pipe 60 on the diesel engine 15 side that extends from the exhaust port of the turbine section 55 a of the supercharger 55 is connected to the exhaust gas introduction port 57. A connected exhaust pipe 61 communicates with the exhaust gas discharge port 58.

  As shown in FIG. 9, a combustion catalyst 62 and a particulate collection filter 63 are provided in the exhaust treatment device 33 in order from the upstream side of the flow path of the exhaust gas. Also, as shown in FIGS. 3, 6 to 8, and 10, a portion of the exhaust treatment device 33 that does not enter the space below the side panel 29 of the operation control unit 13, that is, the fuselage than the side panel 29. On the other side, a temperature sensor 65 (corresponding to “detecting means”) and a differential pressure sensor 66 (corresponding to “detecting means”) for detecting the state of the exhaust treatment device 33 are attached.

  The differential pressure sensor 66 is a sensor that detects a differential pressure between an upstream location and a downstream location of the particulate collection filter 63 inside the exhaust treatment device 33. By referring to map data set in advance based on the differential pressure detected by the differential pressure sensor 66, the amount of particulate matter collected in the particulate collection filter 63 is obtained. An upstream port 66a is provided in the lower part of the outer position on the exhaust treatment device 33 side, and a downstream port 66b is provided in the upper part of the outer position on the exhaust treatment device 33 side. A differential pressure sensor 66 is connected to the upstream port 66a and the downstream port 66b via a harness 70 protruding to the other side of the airframe of the exhaust treatment device 33. The differential pressure sensor 66 is provided at a position higher than the upper end of the exhaust treatment device 33 in order to prevent the backflow of liquid from the exhaust treatment device 33.

  The temperature sensor 65 is a sensor that measures the internal temperature of the exhaust treatment device 33. As the temperature sensor 65, an upstream temperature sensor 65a, an intermediate temperature sensor 65b, and a downstream temperature sensor 65c are arranged. The upstream temperature sensor 65 a detects the temperature of the upstream portion of the combustion catalyst 62. The intermediate temperature sensor 65 b detects the temperature at a location between the combustion catalyst 62 and the particulate collection filter 63. The downstream temperature sensor 65 c detects the temperature of the downstream portion of the particulate collection filter 63.

  When particulate matter of a predetermined amount or more necessary for combustion is accumulated on the particulate collection filter 63, the combustion catalyst 62 activates the exhaust gas introduced into the exhaust treatment device 33 only by combustion of the particulate matter. Temperature up to However, when particulate matter is deposited on the particulate collection filter 63 less than a predetermined amount necessary for combustion, the internal temperature of the exhaust treatment device 33 is the activation temperature of the combustion catalyst 62 only by burning the particulate matter. It will not rise up to the temperature and requires additional heating. When particulate matter is deposited in less than a predetermined amount necessary for combustion on the particulate collection filter 63 determined by the differential pressure detected by the differential pressure sensor 66, or the internal temperature detected by the temperature sensor 65 decreases. In this case, the combustible gas is burned at the upstream side portion of the exhaust treatment device 33, and the temperature of the exhaust gas introduced into the exhaust treatment device 33 is raised. At this time, the temperature of the exhaust gas discharged from the exhaust gas discharge port 58 of the exhaust treatment device 33 is as high as about 600 ° C.

  The exhaust treatment device 33 includes a self-cleaning mechanism (not shown) that burns the particulate matter and regenerates the purification function when the particulate collection filter 63 is clogged with particulate matter and the purification function is reduced. It has been. The combine is provided with a microcomputer (not shown), and the microcomputer is provided with control means for operating a self-cleaning mechanism. When the control means senses clogging of the particulate collection filter 63 based on the differential pressure detected by the differential pressure sensor 66, the control means estimates the amount of particulate matter deposited on the particulate collection filter 63, and the self-cleaning mechanism It is operated appropriately.

  As shown in FIG. 10, the cutting unit 18 is configured to be able to swing open and close around the vertical axis P, and includes a working state in which the cutting operation is performed and an open state in which maintenance such as clogging of the cereals can be performed. It can be switched. By swinging the cutting part 18 around the vertical axis P and opening it, the temperature sensor 65, the differential pressure sensor 66, the upstream port 66a, the downstream port 66b, and the harness 70 are placed in the space below the side panel 29. It is exposed to a position where it can be easily maintained from the other side of the aircraft without being hidden.

[Exhaust treatment unit cover]
As shown in FIGS. 2, 3, 5 to 8, and 10, a cover 36 is provided above the exhaust treatment device 33 to prevent dust such as straw scraps from being applied to the exhaust treatment device 33. Yes. The cover 36 is disposed so as to overlap with a portion of the exhaust treatment device 33 that does not enter the space below the operation control unit 13 in plan view, and from the side panel 29 of the exhaust treatment device 33 to the other side of the fuselage. The upper part of the protruding part is covered. The cover 36 is also configured to cover the differential pressure sensor 66, the temperature sensor 65, and the harness 70 from above. That is, the upper part of the exhaust treatment device 33 is covered with the cover 36 and the driving control unit 13. Moreover, the cover 36 is arrange | positioned so that a part may overlap with the protection member 26 by planar view.

  As shown in FIGS. 5, 7, and 8, the cover 36 is formed by bending a flat plate, and is formed in a shape that is inclined so as to be positioned downward as the distance from the driving control unit 13 increases. The support member 35 is provided with a bracket 72 extending to the other side of the machine body. The cover 36 is attached to the support member 35 of the side panel 29 via a bracket 72. The bracket 72 includes a vertical fixing portion attached to the other side end of the support member 35 by a fastener, an extension extending upward from the fixing portion, and extending away from the support member 35 as it goes upward. And an attachment portion extending from the extension portion to the side away from the support member 35. The end portion of the cover 36 on the side panel 29 side is coupled to the mounting portion of the bracket 72 by fastening a fastener 73 in the vertical direction while being overlapped with the bracket 72 from above.

  The cover 36 is open on the side opposite to the operation control unit 13 in the space between the cover 36 and the exhaust treatment device 33. Further, the cover 36 is open on the front and rear sides of the fuselage in the space between the cover 36 and the exhaust treatment device 33. As a result, the engine cooling air directed from one side of the fuselage to the other side of the fuselage flows along the upper portion of the exhaust treatment device 33 and is guided by the inclination of the lower surface of the cover 36, and the operation control unit in the cover 36 in the cover 36 13 is dissipated to the outside from the open part on the opposite side to 13 and the open part in the longitudinal direction of the fuselage.

[Connected exhaust pipe]
Exhaust gas discharged from the exhaust treatment device 33 is discharged outside the apparatus through a connected exhaust pipe 61 shown in FIGS. The connected exhaust pipe 61 is disposed between the left and right crawler traveling devices 11 and extends rearward from the exhaust processing device 33, and its extended end is more than the rear end of the left and right crawler traveling devices 11. Located on the front side. The connection exhaust pipe 61 includes an exhaust pipe 75, a first eject pipe 76, a second eject pipe 78, a third eject pipe 79, a fourth eject pipe 80, and an air guide plate 81. .

  As shown in FIGS. 7 to 9, the exhaust pipe 75 is provided with a base end portion 75a and a bent tip end portion 75b. The base end portion 75 a extends horizontally from the exhaust gas discharge port 58 of the exhaust treatment device 33 toward the lateral inner side of the machine body where the cutting unit 18 is located. The bent distal end portion 75 b is bent and extended from the extending end of the base end portion 75 a toward the outer side of the fuselage and downward toward the lower side of the fuselage, and is connected to the inlet side of the first eject pipe 76. The proximal end portion 75a and the bent distal end portion 75b are cut obliquely and are butt welded so as to be substantially orthogonal. That is, the exhaust pipe 75 is horizontally pulled toward the direction away from the exhaust treatment device 33, and is bent at a right angle at the joint portion between the base end portion 75a and the bent distal end portion 75b. As a result, the exhaust pipe 75 can be made compact in the lateral direction without requiring bending with a large curvature, and a clearance t in the lateral direction of the fuselage is provided between the guide member 23 of the threshing device 19. The exhaust pipe 75 can be positioned in the state, and the exhaust pipe 75 can be prevented from contacting the guide member 23 of the threshing device 19.

  As shown in FIGS. 5, 6, 9, and 11, the first eject pipe 76 is connected to the extended end of the bent tip 75 b of the exhaust pipe 75 on the inlet side by a fastener and is It is formed to extend. In the connecting portion between the exhaust pipe 75 and the first eject pipe 76, the cross-sectional area of the first eject pipe 76 is made larger than the cross-sectional area of the exhaust pipe 75.

  As shown in FIGS. 5, 6, 9, 11, and 12, the second eject pipe 78 is connected to the extended end of the first eject pipe 76 on the inlet side by a fastener and is connected downward. It is bent and formed into a shape that is inclined so as to be positioned downward as it goes backward. At the connecting portion between the first eject pipe 76 and the second eject pipe 78, the cross-sectional area of the second eject pipe 78 is made larger than the cross-sectional area of the first eject pipe 76. As shown in FIGS. 11 and 15, the second eject pipe 78 is supported by the first horizontal frame 83 in the body frame 17. Specifically, the second eject pipe 78 is connected to the first horizontal frame 83 via a first U-shaped member 84, a pair of first angle members 85, and a first U-shaped stay 86. Yes. The first U-shaped member 84 is open on the front side, and the front end is welded to both side surfaces of the rear end of the first horizontal frame 83. The pair of first angle members 85 has a front portion connected to a rear end portion of the first U-shaped member 84. The first U-shaped stay 86 is open at the rear, is positioned between the pair of first angle members 85, and is connected to the rear portions of the pair of first angle members 85.

  As shown in FIGS. 5, 6, 11, and 13, the third eject tube 79 includes a first upper divided body 79 a having a trapezoidal shape with an upper portion as a short side and an open lower portion, and a rectangular shape with an upper portion at the top. The opened first lower divided body 79b is vertically joined. The third eject pipe 79 is formed in an inclined shape so that the inlet side is externally fitted to the extending end of the second eject pipe 78 and is connected by a fastener, and is positioned downward as it goes rearward. The cross sectional area of the third eject pipe 79 is made larger than the cross sectional area of the second eject pipe 78. As shown in FIGS. 11 and 16, a mounting plate 82 a is provided on the bottom surface of the first lower divided body 79 b of the second eject pipe 78, and a mounting plate is mounted on the top surface of the second horizontal frame 88. 82b is provided. The second eject pipe 78 is supported by the second horizontal frame 88 by fixing the mounting plate 82a to the mounted plate 82b with a fastener.

  As shown in FIGS. 5, 6, 11, 14, and 16, the fourth eject pipe 80 includes a second upper divided body 80 a having a trapezoidal shape with the upper part as a short side and an open lower part, and a rectangular shape. A second lower divided body 80b whose shape is open at the top is joined vertically. The fourth eject pipe 80 is formed in an inclined shape so that the inlet side is externally fitted to the extending end of the third eject pipe 79 and is connected by a fastener, and is located downward as it goes rearward. The fourth eject pipe 80 is supported by the second horizontal frame 88 in the body frame 17. Specifically, as shown in FIGS. 11 and 16, the second eject pipe 78 is provided via a second U-shaped member 89, a pair of second angle members 90, and a second U-shaped stay 91. The second horizontal frame 88 is connected. The second U-shaped member 89 is open on the front side, and the front end is welded to both side surfaces of the rear end of the second horizontal frame 88. The pair of second angle members 90 have their front portions connected to the rear end portions of the second U-shaped member 89, respectively. The second U-shaped stay 91 is open at the rear, is positioned between the pair of second angle members 90, and is connected to the rear portions of the pair of second angle members 90.

  As shown in FIG. 11, the air guide plate 81 is connected to the rear end portion of the second upper divided body 80a of the fourth eject pipe 80, and has a shape that is inclined so as to be positioned downward as it goes rearward. ing. When exhaust gas is discharged from the connected exhaust pipe 61 to the outside of the machine by the wind guide plate 81, the exhaust gas is discharged downward, and a fuel tank 92 provided above the rear end portion of the connected exhaust pipe 61. The exhaust gas is prevented from being sprayed on the surface.

  By configuring the connected exhaust pipe 61 in this manner, the gap between the exhaust pipe 75 and the first eject pipe 76, the gap between the first eject pipe 76 and the second eject pipe 77, the third eject pipe 79 and the fourth eject pipe. Cooling air is taken in from the four gaps between the pipe 80 and the pipe 80. As a result, the exhaust gas having a high temperature of about 600 ° C. at the inlet of the exhaust pipe 75 connected to the exhaust gas outlet 58 of the exhaust treatment device 33 is sequentially cooled by the cooling air taken in through the four gaps, and finally Then, it is cooled to a predetermined temperature, for example, a temperature of 240 ° C. or less, and discharged from the fourth eject pipe 80 to the outside of the apparatus through the air guide plate 81.

[Buffer mechanism]
As shown in FIGS. 7, 8, 17, and 18, the diesel engine 15 that supports the exhaust treatment device 33 is supported by the body frame 17. Between the body frame 17 and the diesel engine 15, a pair of front and rear first engine mounts 96 for buffering vibrations of the body and a pair of front and rear second engine mounts 97 (corresponding to “buffer mechanism”) are provided. ing. The second engine mount 97 is disposed at a portion of the diesel engine 15 on the output shaft 15a side.

  The second engine mount 97 includes a pin member 98 provided on the diesel engine 15 side, a boss-like member 99 covering the circumferential direction of the pin member 98 and provided on the body frame 17 side, and a pin member 98 and a boss-like shape. And a cylindrical rubber member 100 provided over the entire circumference between the member 99 and the member 99. The pin member 98 is rotatably supported with respect to the mounting member 101 fixed on the diesel engine 15 side, and is arranged so that the axial direction thereof is along the direction of the output shaft 15 a of the diesel engine 15. That is, the cylindrical rubber member 110 is arranged in such a posture that its axial direction is along the direction of the output shaft 15a of the diesel engine 15. In other words, the cylindrical rubber member 110 has a radial direction of It is arranged in a posture that is substantially orthogonal to the side surface of the diesel engine 15. The boss-like member 99 has a pedestal portion 99 a disposed substantially at right angles to the side surface of the diesel engine 15, and the pedestal portion 99 a is fixed to the upper surface of the body frame 17 with a fastener.

  As shown in FIG. 17, the threshing device 19 provided on the side opposite to the vehicle body lateral direction and the rear side of the driving control unit 13 is configured such that the output shaft 15 a of the diesel engine 15 is transmitted to the input shaft 19 a of the threshing device 19. It is connected through. Further, the output shaft 15a of the diesel engine 15 is provided on the side opposite to the vehicle body in the lateral direction of the driving control unit 13 and on the rear side, and is connected to the input shaft 30a of the traveling transmission 30 connected to the cutting unit 18 via a transmission belt 30b. Connected.

[Operation restriction of exhaust treatment equipment]
When hot exhaust gas is exhausted indoors, such as in a barn where the combine is stored, hot air from the exhaust gas is unfavorable. When the combine is indoors such as a barn, the speed of the diesel engine 15 does not increase so much because it is traveling at a low speed. For this reason, when the rotational speed of the diesel engine 15 is less than a predetermined rotational speed necessary for harvesting with the combine, the combiner is regarded as being indoors such as a barn and the operation of the exhaust treatment device 33 is limited. Thus, the combustion for regenerating the particulate collection filter 63 is not performed.

  For example, the rotational speed of the diesel engine 15 when operating the threshing device 19 during the harvesting operation is 2650 rpm, and the minimum rotational speed of the diesel engine 15 required to operate the threshing device 19 is 2000 rpm. To do. In this case, the predetermined rotational speed is, for example, 2000 rpm, and when the rotational speed of the diesel engine 15 is less than 2000 rpm, it is assumed that the combine is indoors, and the particulate collection filter 63 is not regenerated in the exhaust treatment device 33. As a result, it is possible to prevent inconveniences such as hot air from the exhaust gas flowing indoors.

[Another embodiment]
(1) In the said embodiment, although the 2nd engine mount 97 showed what was arrange | positioned only in the site | part by the side of the output shaft 15a of the diesel engine 15, it is not restricted to this. For example, in addition to the second engine mount 97 being disposed on the output shaft 15 a side of the diesel engine 15, the first engine mount 96 is replaced with a side opposite to the output shaft 15 a side of the diesel engine 15. The second engine mount 97 may also be disposed at the site.

  (2) In the above embodiment, the exhaust treatment device 33 and the cover 36 are arranged such that the longitudinal direction of the machine body is the longitudinal direction, but the present invention is not limited to this. For example, the exhaust treatment device 33 and the cover 36 may be arranged such that the lateral direction of the body is the longitudinal direction.

  (3) In the above embodiment, the temperature sensor 65 and the differential pressure sensor 66 for detecting the state of the exhaust treatment device 33 are attached to a portion of the exhaust treatment device 33 that does not enter the space below the operation control unit 13. Although shown, it is not limited to this. The temperature sensor 65 and the differential pressure sensor 66 may be attached to a portion of the exhaust treatment device 33 that enters the space below the operation control unit 13.

  (4) In the above embodiment, the cover 36 having a size covering the upper portion of the exhaust treatment device 33 is shown, but the present invention is not limited to this. The cover 36 having a size that covers the exhaust processing device 33 and the exhaust pipe 75 may be used.

  (5) Although the pin member 98 is provided on the diesel engine 15 side and the boss-like member 99 is provided on the fuselage frame 17 side as an example of the buffer mechanism in the above embodiment, the second engine mount 97 is shown. Not limited to. The shock absorbing mechanism may be such that the pin member 98 is provided on the body frame 17 side and the boss-like member 99 is provided on the diesel engine 15 side.

  (6) In the above embodiment, the exhaust pipe 75 has been shown to be bent at a right angle by butt welding the base end portion 75a and the bent distal end portion 75b. I can't. The exhaust pipe 75 may be rounded and curved by being bent downward after being laterally drawn.

  (7) In the above embodiment, an example in which the diesel engine 15 is provided is shown as an example of the engine, but the invention is not limited thereto. Other engines such as a gasoline engine may be provided.

12: Cabin 13: Driving control unit 14: Driver's seat 15: Diesel engine (engine)
15a: Output shaft 17: Airframe frame 19: Threshing device 19a: Input shaft 29: Side panel 31: Shift lever (operating tool)
32: Mowing clutch lever (operating tool)
33: Exhaust treatment device 34: Window portion 35: Support member 36: Cover 65: Temperature sensor (detection means)
66: Differential pressure sensor (detection means)
72: Bracket 97: Second engine mount (buffer mechanism)
98: Pin member 99: Boss-shaped member 100: Rubber member

Claims (15)

A driving control unit,
An engine provided below the operation control unit;
An exhaust treatment device that introduces exhaust gas of the engine and purifies the exhaust gas, and
The exhaust treatment device is disposed in a state in which a part thereof enters the lower space of the operation control unit in plan view,
A combine in which an upper portion of the exhaust treatment device is covered with a cover supported by the driving control unit and the driving control unit. The driving control unit includes a driving seat and a side panel provided on a side of the driving seat and provided with a plurality of operation tools.
The combine according to claim 1, wherein the exhaust treatment device is disposed in a state of entering a lower space of the side panel.   The combine according to claim 1 or 2, wherein a detection means for detecting the state of the exhaust treatment device is attached to a portion of the exhaust treatment device that does not enter the lower space of the operation control unit.   The combine according to claim 3, wherein the cover is configured to cover the detection means from above.   5. The cover according to claim 1, wherein at least a side opposite to the operation control unit in a space between the cover and the exhaust treatment device is opened. Combine.   The combine according to any one of claims 1 to 5, wherein the cover is configured such that at least a front-and-rear side of the body is opened in a space between the cover and the exhaust treatment device.   The combine according to any one of claims 1 to 6, wherein the cover is formed in a shape that is inclined so as to be positioned downward as the distance from the driving control unit is increased. The driving control unit includes a support member along the longitudinal direction of the aircraft,
The combine according to any one of claims 1 to 7, wherein the cover is attached to the support member. A cabin is provided in the driving control unit,
A window portion is provided on a side surface of the cabin where the exhaust treatment device enters,
The combine according to claim 8, wherein the support member supports the window portion from below. A bracket connected to the support member and extending outward from the fuselage is provided,
The combine according to claim 8 or 9, wherein the cover is attached to the bracket.   11. The combine according to claim 10, wherein the end portion of the cover is connected to the bracket from above by a fastener in a vertical direction. The exhaust treatment device is disposed such that the longitudinal direction of the body is the longitudinal direction,
The combine according to any one of claims 1 to 11, wherein the cover is disposed such that a longitudinal direction of the machine body is a longitudinal direction. The exhaust treatment device is supported by the engine,
A shock-absorbing mechanism for buffering vibration of the airframe is provided between the airframe that supports the engine and the engine,
The shock absorbing mechanism covers a pin member provided on either the engine side or the body frame side and a circumferential direction of the pin member, and is provided on the other side of the engine side or the body frame side. The combine as described in any one of Claim 1 to 12 provided with the rubber member provided over the perimeter between the said boss-shaped member and the said pin member and the said boss-shaped member.   The combine according to claim 13, wherein the buffer mechanism is disposed at a portion on the output shaft side of the engine. A threshing device is provided on the opposite side of the driving control unit in the lateral direction and on the rear side,
The combine of Claim 13 or 14 with which the output shaft of the said engine is connected with the input shaft of the said threshing apparatus.

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