KR20140063390A - Combine - Google Patents

Abstract

An objective of the present invention is to improve the installment environment of an exhaust treatment device. The combine according to the present invention includes: a drive control unit; a diesel engine (15) installed below the drive control unit; an exhaust treatment device (33) for conducting a purification treatment of the exhaust gas by introducing the exhaust gas of the diesel engine (15). The exhaust gas treatment device (33) is arranged on a space below the drive control unit in an ingression, when partially looked from a horizontal view, and the top side of the exhaust gas treatment device (33) is covered by the drive control unit (13) and a cover (36) supported by the drive control unit.

Description

Combine {COMBINE}

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

For example, in a combine disclosed in Patent Document 1, an engine such as a diesel engine is mounted on a driving portion. BACKGROUND ART In recent years, there has been a tendency that exhaust gas regulations become strict. In order to reduce particulate matter contained in exhaust gas, an exhaust gas treatment apparatus for purifying exhaust gas by introducing exhaust gas of an engine .

The exhaust treatment apparatus is provided with a particulate collection filter for filtering particulate matter in the exhaust gas. The particulate matter trapping filter filters the particulate matter in the exhaust gas and reduces the amount of particulate matter discharged to the outside of the gas.

Japanese Patent Application Laid-Open No. 2010-213605

The exhaust gas discharged from the engine is introduced into the exhaust treatment apparatus at a high temperature. In addition, since the particulate matter collecting filter of the exhaust treatment apparatus is clogged with particulate matter while the particulate matter collecting filter is continuously used, the exhaust treatment apparatus is provided with a self-cleaning function for burning the particulate matter collected by the particulate trapping filter with a heater or the like There are also some. For this reason, the surface of the exhaust gas treatment apparatus is usually relatively high in temperature.

However, if such an exhaust treatment device having such a high temperature is merely installed in a combine which mainly harvests rice or barley, dust such as dried rice straw crumbs scattered around the combine may come into contact with the exhaust treatment device Which is undesirable.

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

The combine of the present invention is characterized in that it comprises a driving control section, an engine provided below the operation control section, and an exhaust processing device for introducing exhaust gas of the engine to perform purification treatment of the exhaust gas, Is disposed in a state of being partially drawn in a lower space of the operation control unit when seen in a plane and that an upper portion of the exhaust processing unit is covered with the cover supported by the operation control unit and the operation control unit have.

According to the present feature, the exhaust treatment device is arranged in a state in which a part of the exhaust treatment device is drawn into a space below the operation control portion when viewed in a plan view. This makes it possible to arrange the exhaust treatment device compactly without occupying a space in the lateral direction of the vehicle by using the space below the operation control portion. The upper portion of the exhaust treatment device is covered by the cover and the operation control portion supported by the operation control portion. This reduces the possibility that the dust and debris, such as rice straw dust scattered from above, comes into contact with the exhaust treatment apparatus which has become hot during operation by the cover and the operation control unit. Therefore, the installation environment of the exhaust gas treatment apparatus is improved.

In the present invention, the operation control unit is provided with a driver's seat and a side panel provided at a side of the driver's seat and having a plurality of operating ports disposed therein, wherein the exhaust processing apparatus is arranged in a space below the side panel It is preferable that they are arranged in a drawn state.

Generally, the side of the side panel is provided with a feeding device for conveying the cut grains from the pre-loading unit to the threshing unit, so that the space on the side of the side panel is in an environment where scattered dust such as straw straw debris is easily scattered.

According to this configuration, the exhaust processing apparatus is partially disposed in the lower space of the side panel, and the upper portion of the exhaust processing apparatus is covered by the cover and the side panel supported by the side panel. This reduces the possibility that the dust and debris scattered from above is contacted by the cover and the side panel to the exhaust treatment apparatus which becomes hot during operation.

In the present invention, it is preferable that detection means for detecting the state of the exhaust treatment device is provided at a portion of the exhaust treatment device that is not introduced into the space below the operation control portion.

As in the present configuration, by providing the detecting means at a portion of the exhaust gas processing apparatus which is not drawn into the space below the operation control portion, it is easy to perform the maintenance of the detecting means.

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

According to this configuration, since the cover is configured to cover the detecting means from above, the detecting means as well as the exhaust gas treating apparatus can be protected from dust such as rice straw crumbs scattering from above.

In the present invention, it is preferable that the cover is configured such that at least the opposite side of the space between the cover and the exhaust treatment device is open.

According to this configuration, since the cover is constituted so that at least the opposite side of the space between the cover and the exhaust processing device is open at the side opposite to the operation control portion, the heat of the exhaust processing device is reduced, It is possible to prevent the heat from being accumulated in the space between the cover and the exhaust processing device, and being discharged to the outside air on the opposite side of the operation control portion from the space between the cover and the exhaust processing device.

In the present invention, it is preferable that the cover is configured such that at least the front and rear sides of the space among the space between the cover and the exhaust processing apparatus are opened.

According to this configuration, since the cover is configured to open at least the front and rear sides of the space among the space between the cover and the exhaust gas processing device, the heat of the exhaust gas processing device is transferred to the cover and the exhaust It is possible to prevent the heat from being accumulated in the space between the cover and the exhaust processing apparatus by being discharged from the space between the processing apparatuses to the outside air on the gas front and rear direction side.

In the present invention, it is preferable that the cover is formed so as to be inclined so as to be positioned downwardly away from the operation control portion.

According to this configuration, since the cover is formed so as to be inclined so as to be positioned downward as it is spaced apart from the operation control portion, the dust such as rice straw crumbs dropped on the upper surface of the cover naturally falls down to the side away from the operation control portion of the cover So that it is difficult for rice straw scraps and the like to deposit on the upper surface of the cover.

In the present invention, it is preferable that the operation control portion is provided with a support member along the gas longitudinal direction, and the cover is provided on the support member.

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

In the present invention, it is preferable that a cabin is provided in the operation control section, a window is formed on the side of the cabin on which the exhaust treatment device is drawn, and the support member supports the window from below .

According to this configuration, by using an existing support member for supporting the window portion of the cabin from below as a support member of the exhaust treatment device, a dedicated support member can be dispensed with.

In the present invention, it is preferable that a bracket connected to the support member and extending outwardly of the base is provided, and that the cover is provided on the bracket.

According to this configuration, since the cover can be provided at a position spaced apart from the base through the bracket, the installation work of the cover can be easily performed.

In the present invention, it is preferable that the end portion of the cover is connected to the bracket by upper and lower fasteners in a state of overlapping from above.

According to this configuration, the cover can be installed by operating the fastener in the vertical direction using a tool or the like outside the base, and the installation work of the cover can be performed more easily.

In the present invention, it is preferable that the exhaust treatment device is arranged so that the gas longitudinal direction is in the longitudinal direction, and the cover is arranged so that the gas longitudinal direction is in the longitudinal direction.

With this configuration, the cover and the exhaust treatment device can be arranged compactly in the machine direction, since the cover is also arranged so that the gas front and rear direction is in the longitudinal direction, in accordance with the exhaust treatment device arranged so that the gas longitudinal direction is in the longitudinal direction.

In the present invention, the exhaust treatment device is provided with a buffer mechanism, which is supported by the engine, between the base frame for supporting the engine and the engine, for vibrating the vibration of the base body, A boss-shaped member provided on either the engine side or the base frame side and covering the circumferential direction of the pin member, and a boss-shaped member provided on either the engine side or the base frame side, It is preferable that a rubber member provided over the whole circumference between the members is provided.

According to this configuration, the vibration of the engine is prevented from being transmitted to the base 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 compression force in the radial direction of the pin member, so that the shearing force hardly acts on the rubber member. As a result, the damping mechanism is hardly broken and the damping mechanism is long. Therefore, the engine can be stably supported on the base frame through the buffer mechanism, and further, the 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.

Generally, a large tensile force is applied to the output side of the engine in a direction perpendicular to the output shaft of the engine, because the input shaft of the other device is connected to the output shaft side of the engine through, for example, a transmission belt.

According to this configuration, the damping mechanism having high durability is arranged at the output side of the engine on which such a large tensile force acts so that the engine can be stably supported on the base frame, and further, So that the exhaust gas treatment device can be stably supported.

In the present invention, it is preferable that a thrashing device is provided on the side opposite to the transverse direction of the operation control section and on the rear side, and the output shaft of the engine is linked to the input shaft of the threshing device.

According to this configuration, the threshing device, which requires particularly large power in the combine, is provided on the opposite side in the gas transverse direction and on the rear side of the operation control portion. Generally, since the output shaft of the engine supporting the discharge processing device is connected to the input shaft of the threshing device on the rear side through the transmission belt, a large tensile force in the direction orthogonal to the output shaft of the engine, Lt; / RTI > By arranging the damping mechanism with high durability on the output side of the engine in which the large tensile force acts, the engine can be stably supported on the base frame, and further, the vibration to the exhaust treatment apparatus supported by the engine can be reduced So that the exhaust gas treatment apparatus can be stably supported.

1 is a right side view showing the entire combine.
2 is a left side view showing the entire combine.
3 is a plan view showing the entire combine.
4 is a right side view showing a driving control portion and a driving portion.
5 is a left side view showing a driving control part and a driving part.
6 is a plan view showing a driving control part and a driving part.
7 is a front vertical cross-sectional view of the operation control unit and the engine bonnet.
8 is a front sectional view of the operation control unit and the engine bonnet.
Fig. 9 is a left side view showing the driving unit. Fig.
10 is a plan view for explaining the swing opening and closing of the preloading portion;
11 is a left side view of a connected exhaust pipe.
12 is a cross-sectional view taken along the line XII-XII in Fig.
13 is a sectional view taken along the line XIII-XIII in Fig.
14 is a cross-sectional view taken along line XIV-XIV in Fig.
15 is a perspective view of a second eject tube;
16 is a perspective view of a third eject tube and a fourth eject tube;
17 is a plan view of a diesel engine.
18 is a plan sectional view of the second engine mount.
19 is an exploded perspective view of the second engine mount.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Overall composition of combine]

As shown in Figs. 1 to 3, the combine harvesting rice, barley, and the like, and is configured to be self-propelled by a pair of right and left crawler traveling devices 11. [ The combine is provided with a driving control portion 13 of a passenger type equipped with a cabin 12 and a driving portion 16 equipped with a diesel engine 15 (equivalent to an " engine " Is provided at one end of the gas transverse side of the front end of the base frame 17. The combine is provided with a preassembled portion 18 connected to the gas frame 17 of the running vehicle on the other lateral side of the operation control portion 13 and a second transverse side opposite to the gas transverse direction side of the operation control portion 13 And a curling tank 20 disposed on one lateral side of the trolley 19 on the rear side of the base frame 17 of the traveling base.

[Example]

The preload part (18) is provided with a preload frame (18a) extending forward and backward from the base frame (17) so as to be vertically swingable. The preloading unit 18 is configured such that the preloading frame 18a is pivoted by the lifting cylinder 21 so that the upstream end of the preloading unit 18 is vertically lowered And the elevating / lowering operation state is established between the lowering work state and the rising work state where the minute hole 18b is raised higher than the ground. By moving the traveling unit 18 in the descending working state and running the traveling unit 18, the loading unit 18 introduces the erected grain bed to be laid to the standing unit 18c on the rear side by the jet opening 18b A standing grain bar is subjected to cutting processing by a clipper type cutting edge 18d and the cut grain bar is conveyed backward by a feeding device 18e to guide the grain removing device 19 So that the cut grain bundle is guided by the member (23) and supplied to the threshing feed chain (24).

[Threshing device]

The threshing device 19 performs the threshing process by feeding the bottom end of the cut grain bundle supplied by the feed device 18e to the rear side of the base by the threshing feed chain 24 while feeding the end of the grain to the feed. The curling tank 20 stores the threshing lips sent from the threshing device 19 and carries out the stored threshing lips by the auger 25 made of a screw conveyor. A protective member 26 covering the upper side of the threshing feed chain 24 is provided at a position on the transverse side opposite to the transverse direction of the operation control section 13 and forward of the threshing device 19 in the traveling gas Respectively.

[Operation Control Section]

As shown in Figs. 1 to 8, the operation control unit 13 is provided above the engine bonnet 27 at a position on the front side and on the gas transverse side of the running vehicle. The cabin 12 provided in the driving control section 13 is provided with a driving seat 14, a front panel 28 disposed in front of the driving seat 14, And a side panel 29 disposed on the side of the other transversely opposite side of the transverse direction. The side panel 29 is provided with a shift lever 31 for shifting the transmission 30 and a clean clutch lever 32 (Corresponding to the " operation opening ") and the like are provided so as to be swingable.

2, 5, and 7, a window portion 34 is formed on a side surface of the side panel 29 located on the other lateral side of the cabin 12 of the cabin 12 of the operation control portion 13. As shown in Fig. The window portion 34 is supported from below by a support member 35 disposed along the gas longitudinal direction of the side panel 29.

[Origin]

As shown in Figs. 1, 2, and 5 to 9, a diesel engine 15 is provided in the engine unit 16 in a state of being built in the engine bonnet 27. In the diesel engine 15, an exhaust treatment device 33 is supported. The engine bonnet 27 is provided with a front wall portion 27a located on the front side of the diesel engine 15 and a ceiling plate portion 39 located above the diesel engine 15 ).

5, 9, and 17, the diesel engine 15 is supported by the base frame 17 in a mounting posture in which the direction of the output shaft 15a is the transverse direction of the base. 7 and 8, the diesel engine 15 is provided with a cooling water circulation pipe (not shown) between the diesel engine 15 and the intake wall 43 provided at the outer lateral end of the engine bonnet 27, And a radiator 45 for cooling the engine, which is connected to the base frame 17 via a radiator 44. Between the radiator 45 and the diesel engine 15, there is provided a cooling fan 46 supported rotatably with respect to the diesel engine 15. [ The cooling fan 46 is driven to perform air cooling of the diesel engine 15.

In the intake wall 43, a plurality of intake holes are formed. When the cooling fan 46 is rotationally driven by the diesel engine 15, the air outside the engine bonnet 27 is sucked from the intake hole of the intake wall 43 into the engine bonnet 27, An engine cooling wind for cooling the engine 15 is generated. In the interior of the engine bonnet 27, the engine cooling air flows in the transverse direction from the transversely outer side to the transversely inward side, and the engine cooling air is supplied to the radiator 45. After the heat exchange between the engine cooling wind and the cooling water is performed in the radiator 45, the engine cooling wind is supplied to the diesel engine 15. [

Air cleaner 52 (not shown) supported on the support portion 51 of the ceiling portion 50 is provided near the rear of the ceiling portion 50 of the cabin 12 as shown in Figs. 1, 2, 4, . An air cleaner 54 is provided in the air cleaner chamber 53 formed behind the driver's seat 14. [ As shown in Figs. 5 and 7 to 9, a turbocharger 55 is provided in the vicinity of the front side of the upper portion of the diesel engine 15 inside the engine bonnet 27. The supercharger 55 is driven by the exhaust gas discharged from the diesel engine 15.

The air outside the engine bonnet 27 is sucked and damped by the pre-air cleaner 52, and the air after the dampening is sucked by the air cleaner 54 and is then demagnetized. The air after the vibration elimination is sucked into the supercharger 55 to generate compressed air. The compressed air is sent to the intercooler 56 and cooled and supplied to the diesel engine 15 as combustion air.

[Exhaust Processing Apparatus]

As shown in Figs. 1 to 3 and Fig. 5 to Fig. 10, the exhaust gas processing apparatus 1 includes an engine bonnet 27, (33). The exhaust treatment device 33 is connected to the upper part of the diesel engine 15 via a support body 95 and is supported in a posture in which the gas longitudinal direction is oriented in the longitudinal direction. The exhaust treatment device 33 is disposed at a position offset to the side of the pretensioner 18 on the other lateral side of the vehicle with respect to the driver's seat 14. [ A part of the exhaust treatment device 33 is arranged in a state of being drawn into the space below the window portion 34 of the side panel 29 in the operation control portion 13 when seen in plan view. That is, the exhaust gas treatment device 33 is configured such that the other part of the exhaust gas is directed from the side panel 29 of the cabin 12 of the operation control portion 13 toward the side of the protection member 26 on the transversely opposite side of the gas (In particular, see FIG. 8) so as to protrude from the opening 27c located at the lateral end of the engine bonnet 27 on the transversely opposite side.

A ceiling plate portion 39 of the engine bonnet 27 is provided with an air cleaner lower portion 40 positioned on one side of the gas transverse direction and a vertical plate portion 41 extending upward from the other lateral side of the air cleaner lower portion 40, And a device upper portion 42 extending from the vertical plate portion 41 to the transverse side of the substrate (see Fig. 4). The upper part 42 of the device is positioned above the air cleaner lower part 40 so that the exhaust treatment device 33 is disposed below the device upper part 42 of the ceiling plate 39. [ Is formed.

7 to 9, an exhaust gas introducing port 57 and an exhaust gas exhaust port 58 are provided in the exhaust gas processing device 33 at both side end portions in the longitudinal direction of the exhaust gas processing device 33 Respectively. The exhaust gas introducing port 57 is located on the lower surface of the gas front side portion of the exhaust gas processing device 33. The exhaust gas outlet 58 is located on the side of the other lateral side of the gas rear side of the exhaust gas treatment device 33. An exhaust pipe 60 on the diesel engine 15 side extending from the exhaust port of the turbine section 55a of the turbocharger 55 is connected to the exhaust gas inlet port 57. [ A connection exhaust pipe (61) is communicated with the exhaust gas outlet (58).

9, a combustion catalyst 62 and a particulate collection filter 63 are provided in the exhaust treatment device 33 in this order from the upstream side of the flow path of the exhaust gas. As shown in Figs. 3, 6 to 8, and 10, a portion of the exhaust treatment device 33 that is not introduced into the space below the side panel 29 of the operation control portion 13, that is, A temperature sensor 65 (corresponding to the "detecting means") and a differential pressure sensor 66 (corresponding to the "detecting means") for detecting the state of the exhaust gas treating device 33 are provided on the transversal side of the gas Is installed.

The differential pressure sensor 66 is a sensor for detecting the differential pressure between the upstream portion and the downstream portion of the particulate matter collecting filter 63 inside the exhaust treatment device 33. The accumulation amount of the particulate matter collected in the particulate trapping filter 63 is obtained by referring to the map data set in advance based on the differential pressure detected by the differential pressure sensor 66. [ An upstream port 66a is provided in a lower portion of an outside position on the side of the exhaust processing device 33 and a downstream port 66b is provided in an upper portion of an outward position of the exhaust processing device 33 side. The differential pressure sensor 66 is connected to the upstream port 66a and the downstream port 66b through a harness 70 protruding to the transverse side of the exhaust treatment device 33, respectively. The differential pressure sensor 66 is provided at a position higher than the upper end of the exhaust gas processing device 33 to prevent the backflow of the liquid from the exhaust gas processing device 33.

The temperature sensor 65 is a sensor for measuring the internal temperature of the exhaust treatment device 33. As the temperature sensor 65, an upstream side temperature sensor 65a, an intermediate side temperature sensor 65b, and a downstream side temperature sensor 65c are disposed. The upstream-side temperature sensor 65a detects the temperature at the upstream position of the combustion catalyst 62. [ The intermediate-side temperature sensor 65b detects the temperature of a portion between the combustion catalyst 62 and the particulate matter collection filter 63. [ The downstream-side temperature sensor 65c detects the temperature at the downstream portion of the particulate collection filter 63. [

When the particulate matter trapping filter 63 has accumulated particulate matter of a predetermined amount or more required for combustion, the exhaust gas introduced into the exhaust treatment device 33 is heated only to the temperature at which the combustion catalyst 62 is activated The temperature can rise. However, when the particulate matter trapping filter 63 has accumulated particulate matter less than a predetermined amount required for combustion, the internal temperature of the exhaust treatment device 33 rises to the activation temperature of the combustion catalyst 62 So that separate heating is required. When the particulate matter trapping filter 63 obtained by the differential pressure detected by the differential pressure sensor 66 has deposited particulate matter less than a predetermined amount required for combustion or when the internal temperature detected by the temperature sensor 65 is lowered Combustion of the combustible gas is performed at the upstream position 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 outlet 58 of the exhaust treatment device 33 becomes a high temperature of about 600 ° C.

When the particulate trapping filter 63 is clogged by particulate matter and the purifying function is deteriorated, the exhaust treatment device 33 is provided with a self-cleaning mechanism (not shown) for burning the particulate matter to regenerate the purifying function have. A microcomputer, not shown, is provided in the combine, and the microcomputer is provided with a control means for operating the self-cleaning mechanism. When the clogging of the particulate collection filter 63 is detected based on the differential pressure detected by the differential pressure sensor 66, the control means estimates the accumulation amount of the particulate matter in the particulate collection filter 63, The mechanism is properly operated.

As shown in Fig. 10, the preloading portion 18 is configured to be swingably openable about the longitudinal axis P, and is capable of switching between a work state for performing a cutting operation and an open state for maintenance such as elimination of clogging of the grain bins . The temperature sensor 65, the differential pressure sensor 66, the upstream port 66a, the downstream port 66b and the harness 70 are pivoted about the longitudinal pivot P so that the temperature sensor 65, the differential pressure sensor 66, Is exposed at a position where it is easy to perform maintenance from the other lateral side of the gas without being hidden in the space below the panel (29).

[Cover of exhaust treatment device]

As shown in Figs. 2, 3, 5 to 8, and 10, a cover 36 (Fig. 2) is provided above the exhaust treatment device 33 to prevent dust, such as rice straw, from being attached to the exhaust treatment device 33 . The cover 36 is arranged so as to overlap with the portion of the exhaust treatment device 33 which is not in the lower space of the operation control portion 13 when viewed in plan view and the side panels 29 And covers the upper portion of the portion protruding from the transverse side of the substrate. The cover 36 is also configured to cover the differential pressure sensor 66, the temperature sensor 65, and the harness 70 from above as well. That is, the upper portion of the exhaust treatment device 33 is covered with the cover 36 and the operation control portion 13. [ The cover 36 is arranged so as to partially overlap the protective member 26 when viewed in plan.

As shown in Figs. 5, 7, and 8, the cover 36 is formed by bending a flat plate, and is formed so as to be inclined so as to be positioned downward as it is spaced from the operation control portion 13. [ The support member 35 is provided with a bracket 72 extending to the transverse side of the base body. The cover 36 is provided on the support member 35 of the side panel 29 via the bracket 72. [ The bracket 72 is provided with a fixing portion in the longitudinal direction provided at the other lateral end of the support member 35 by the fastening means and an extension portion extending upward from the fixing portion and spaced upward to some extent from the supporting member 35 And a mounting portion extending from the extending portion to the side away from the supporting member (35). The end of the cover 36 on the side of the side panel 29 is connected to the mounting portion of the bracket 72 by fastening the fastener 73 in the vertical direction while being overlapped with the bracket 72 from above.

The cover 36 is open on the opposite side of the space between the cover 36 and the exhaust treatment device 33 from the operation control portion 13. The cover 36 is open at the front and rear sides of the space between the cover 36 and the exhaust treatment device 33. Thereby, the engine cooling air flowing from one lateral side to the other lateral side of the gas flows along the upper portion of the exhaust gas processing device 33 and is guided by the inclination of the lower surface of the cover 36, And is released to the outside of the gas from the open portion on the opposite side to the portion 13 and the open portion in the gas front and rear direction.

[Connection exhaust pipe]

The exhaust gas discharged from the exhaust treatment device 33 is discharged to the outside of the gas by the connection exhaust pipe 61 shown in Figs. The connecting exhaust pipe 61 is disposed between the left and right crawler traveling apparatuses 11 and extends rearward from the exhaust treatment apparatus 33. The extending end of the connecting exhaust pipe 61 is connected to the rear end of the left and right crawler traveling apparatuses 11, As shown in Fig. The connection exhaust pipe 61 is provided with 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 a wind plate 81 is provided.

As shown in Figs. 7 to 9, the exhaust pipe 75 is provided with a proximal end portion 75a and a bent distal end portion 75b. The proximal end portion 75a extends horizontally from the exhaust gas outlet 58 of the exhaust treatment device 33 toward the transversely inner side of the substrate where the preloading portion 18 is located. The bent distal end portion 75b extends from the extending end of the proximal end portion 75a in the gas transverse outward direction to the lower side of the gas bending backward 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 obliquely cut and welded together so as to be substantially orthogonal to each other. That is, the exhaust pipe 75 is laterally extended toward the direction away from the exhaust treatment device 33, and is bent at a right angle at the joining portion between the proximal end portion 75a and the bent distal end portion 75b. This makes it unnecessary to bend the exhaust pipe 75 with a large curvature so that the exhaust pipe 75 can be made compact in the transverse direction and the exhaust pipe 75 can be made compact between the guide member 23 of the threshing device 19 The exhaust pipe 75 can be positioned with the lateral clearance t left therebetween so that the exhaust pipe 75 can be prevented from coming into contact with the guide member 23 of the trolley unit 19. [

As shown in Figs. 5, 6, 9, and 11, the first eject tube 76 is formed such that the entrance side is fitted to the extended end of the bent tip portion 75b of the exhaust tube 75, And extends downwardly. The cross sectional area of the first eject pipe 76 at the connection portion between the exhaust pipe 75 and the first eject pipe 76 is larger than the cross sectional area of the exhaust pipe 75. [

As shown in Figs. 5, 6, 9, 11, and 12, the second eject tube 78 is formed such that the entrance side is fitted to the extended end of the first eject tube 76, And is bent and formed in an inclined shape so as to extend downward and then to be positioned somewhat below the rear. The sectional area of the second eject tube 78 is larger than the sectional area of the first eject tube 76 at the connecting portion between the first and second eject tubes 76 and 78. [ As shown in Figs. 11 and 15, the second eject pipe 78 is supported by the first transverse frame 83 of the base frame 17. Specifically, the second intake pipe 78 is connected to the first transverse frame 82 via the first U-shaped member 84, the pair of first angle members 85, and the first U- (83). The first U-shaped member 84 has its front side opened and its front end welded to both side surfaces of the rear end portion of the first transverse frame 83. The front portion of the pair of first angle members 85 is connected to the rear end of the first U-shaped member 84, respectively. The first U-shaped stay 86 is open rearward and is located between the pair of first angle members 85 and connected to the rear portion 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 79a having a trapezoidal shape with its upper side shortened and opened at its lower side, And a first lower divided body 79b whose upper portion is opened is vertically joined. The third eject pipe 79 is formed in a shape inclined so that the inlet side is fitted into the outside of the extension end of the second eject pipe 78 and is connected by a fastener and is positioned rearward to some extent. Sectional area of the third eject pipe 79 is larger than the sectional area of the second eject pipe 78. [ As shown in Figs. 11 and 16, a mounting plate 82a is provided on the bottom surface of the first lower divided body 79b of the second take-out tube 78, On the upper surface, a mounting plate 82b is provided. The second intake pipe 78 is supported by the second transverse frame 88 by fixing the mounting plate 82a to the mounting plate 82b with fastening members.

As shown in Figs. 5, 6, 11, 14, and 16, the fourth intake pipe 80 is provided with a second upper divided body 80a having a trapezoidal shape with its upper portion short- And a second lower divided body 80b whose upper portion is opened in a rectangular shape are vertically joined. The fourth intake pipe 80 is formed in a shape inclined so that its inlet end is fitted to the extended end of the third intake pipe 79 and is connected to the rear end thereof by a fastener. The fourth intake pipe (80) is supported by the second transverse frame (88) of the base frame (17). 11 and 16, the second eject pipe 78 includes a second U-shaped member 89, a pair of second angle members 90, a second U-shaped member 89, Via a stay 91, to a second transverse frame 88. Like member 89 is open on the front side and the front end portion is welded to both side surfaces of the rear end portion of the second transverse frame 88. [ The front portion of the pair of second angle members 90 is connected to the rear end of the second U-shaped member 89, respectively. The second U-shaped stay 91 is open rearward and is located between the pair of second angle members 90 and connected to the rear portion of the pair of second angle members 90. [

11, the air guide plate 81 is connected to the rear end of the second upper divided body 80a of the fourth intake pipe 80, and has a shape that is inclined so as to be positioned to the rear to some extent Respectively. The exhaust gas is discharged downward when the exhaust gas is discharged from the connected exhaust pipe 61 to the outside of the vehicle by the air guide plate 81 and the fuel tank 92 provided above the rear end of the connected exhaust pipe 61, Is prevented from being injected.

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 gap between the third eject pipe 79 ) And the fourth eject pipe (80). The exhaust gas having a high temperature of about 600 DEG C at the inlet of the exhaust pipe 75 connected to the exhaust gas outlet 58 of the exhaust gas treatment device 33 is successively discharged by the cooling air introduced from the four gaps Cooled to a predetermined temperature, for example, 240 DEG C or lower, and is discharged from the fourth intake pipe 80 through the air blow plate 81 to the outside of the gas.

[Buffering mechanism]

As shown in Figs. 7, 8, 17 and 18, the diesel engine 15 supporting the exhaust gas treatment device 33 is supported by the base frame 17. Between the base frame 17 and the diesel engine 15 are provided a pair of front and rear first engine mounts 96 for buffering the vibration of the base body and a pair of front and rear second engine mounts 97 ). The second engine mount 97 is disposed at a portion on the output shaft 15a side of the diesel engine 15.

The second engine mount 97 is provided with a pin member 98 provided on the side of the diesel engine 15 and a boss member 99 provided on the side of the base frame 17 for covering the circumferential direction of the pin member 98 And a cylindrical rubber member 100 which is provided over the entire circumference between the pin member 98 and the boss-shaped member 99. The pin member 98 is rotatably supported with respect to the mounting member 101 fixed to the diesel engine 15 side and the axial direction of the pin member 98 is disposed along the direction of the output shaft 15a of the diesel engine 15 have. That is, the cylindrical rubber member 110 is arranged in the posture along the direction of the output shaft 15a of the diesel engine 15, in other words, the cylindrical rubber member 110 And the radial direction is disposed in a posture that is substantially orthogonal to the side surface of the diesel engine 15. [ The boss-shaped member 99 has a pedestal portion 99a disposed substantially at right angles to the side surface of the diesel engine 15. The pedestal portion 99a is fixed to the upper surface of the base frame 17 by fastening means .

The output shaft 15a of the diesel engine 15 is connected to the thrashing device 19 so that the output shaft 15a of the diesel engine 15 is connected to the output shaft 15a of the thrashing device 19, And is connected to the input shaft 19a of the motorcycle via a transmission belt 19b. The output shaft 15a of the diesel engine 15 is provided on the rear side of the operation control portion 13 on the opposite side in the gas transverse direction and is connected to the input shaft 30a via a transmission belt 30b.

[Limitation of operation of exhaust treatment device]

Inside a barn or the like where a combine is stored, when hot exhaust gas is discharged, heat due to the exhaust gas accumulates in the inside of the house. When the combine is indoors in a barn or the like, the rotation speed of the diesel engine 15 is not so large because it is low enough to make a traveling motion. Therefore, when the number of revolutions of the diesel engine 15 is less than the predetermined number of revolutions required for performing the harvesting operation in the combine, the operation of the exhaust gas treatment device 33 is restricted by considering that the combine is indoors, So that the particulate matter collecting filter 63 is not burned for regeneration.

For example, when the number of revolutions of the diesel engine 15 when the threshing device 19 is operating during the harvesting operation is 2650 rpm and the number of revolutions of the diesel engine 15 necessary for operating the threshing device 19 is 2000 rpm . In this case, when the number of revolutions of the diesel engine 15 is less than 2000 rpm, the predetermined number of revolutions is, for example, 2000 rpm, the combine is considered to be indoors, and the particulate collection filter 63 Playback is not performed. As a result, it is possible to prevent the problem that the heat generated by the exhaust gas is accumulated in the house.

[Other Embodiments]

(1) In the above embodiment, it is shown that the second engine mount 97 is disposed only at the portion on the output shaft 15a side of the diesel engine 15, but the present invention is not limited to this. The output shaft 15a of the diesel engine 15 may be replaced by the second engine mount 97 instead of the first engine mount 96. In this case, The second engine mount 97 may be disposed on the opposite side of the second engine mount 97.

(2) In the above embodiment, the exhaust treatment device 33 and the cover 36 are arranged so that the gas longitudinal direction is oriented in the longitudinal direction, but the present invention is not limited thereto. For example, the exhaust treatment device 33 and the cover 36 may be arranged such that the gas transverse direction is in the longitudinal direction.

(3) In the above embodiment, a temperature sensor 65 for detecting the state of the exhaust treatment device 33 is provided at a portion of the exhaust treatment device 33 which is not drawn into the space below the operation control portion 13, Sensor 66 is provided, but the present invention is not limited to this. The temperature sensor 65 or the differential pressure sensor 66 may be provided at a portion of the exhaust treatment device 33 which is drawn into the space below the operation control portion 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 thereto. It may be a cover 36 having a size covering the exhaust processing device 33 and the exhaust pipe 75.

(5) In the above embodiment, the pin member 98 is provided on the side of the diesel engine 15, and the boss-like member 99 is provided on the side of the base frame 17, (97), but the present invention is not limited to this. The pin member 98 may be provided on the side of the base frame 17 and the boss member 99 may be provided on the diesel engine 15 side.

(6) In the above-described embodiment, the exhaust pipe 75 is formed to be bent into a right angle by the butting welding of the proximal end 75a and the bent distal end 75b. However, the present invention is not limited to this. The exhaust pipe 75 may be curved so as to be rounded by being bent downward after being taken out laterally.

(7) In the above embodiment, the diesel engine 15 is shown as an example of the engine, but the present invention is not limited to this. A gasoline engine or the like may be provided.

12: Cabin
13:
14: Driver's seat
15: Diesel engine (engine)
15a: Output shaft
17: airframe frame
19: Thresher
19a: input shaft
29: Side panel
31: Shifting lever (Operator)
32: Leaning clutch lever (operating part)
33: Exhaust gas treatment device
34: window
35: Support member
36: cover
65: temperature sensor (detecting means)
66: Differential pressure sensor (detection means)
72: Bracket
97: Second engine mount (buffering 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,
And an exhaust treatment device for introducing an exhaust gas of the engine and purifying the exhaust gas,
Wherein the exhaust treatment device is arranged in a state in which a part of the exhaust treatment device is drawn in a space below the operation control portion when viewed in a plan view,
Wherein an upper portion of the exhaust treatment device is covered with a cover supported by the operation control portion and the operation control portion. The method according to claim 1,
Wherein the operation control section includes a driver's seat and a side panel provided at a side of the driver's seat and having a plurality of operation ports,
Wherein the exhaust treatment device is disposed in a state of being drawn in a space below the side panel. 3. The method according to claim 1 or 2,
Wherein a detecting means for detecting a state of the exhaust gas processing apparatus is provided in a portion of the exhaust gas processing apparatus which is not drawn into a space below the operation control portion. The method of claim 3,
And the cover is configured to cover the detecting means from above. 5. The method according to any one of claims 1 to 4,
Wherein the cover is configured to open at least a portion of the space between the cover and the exhaust processing device opposite to the operation control portion. 6. The method according to any one of claims 1 to 5,
Wherein the cover is configured to open at least the front and rear sides of the space between the cover and the exhaust processing device. 7. The method according to any one of claims 1 to 6,
Wherein the cover is formed in an oblique shape so as to be positioned downwardly away from the operation control portion. 8. The method according to any one of claims 1 to 7,
Wherein the operation control unit is provided with a support member along the gas longitudinal direction,
And the cover is provided on the support member. 9. The method of claim 8,
A cabin is provided in the operation control unit,
A window is formed on a side surface of the cabin on which the exhaust treatment device is drawn,
Wherein the support member supports the window portion from below. 10. The method according to claim 8 or 9,
A bracket connected to the support member and extending outwardly of the base,
And the cover is mounted on the bracket. 11. The method of claim 10,
And the end portion of the cover is connected to the bracket by upper and lower fasteners while being superimposed on the bracket from above. 12. The method according to any one of claims 1 to 11,
The exhaust treatment device is arranged so that the gas longitudinal direction is in the longitudinal direction,
Wherein the cover is disposed such that the gas longitudinal direction is in the longitudinal direction. 13. The method according to any one of claims 1 to 12,
The exhaust treatment device is supported by the engine,
A buffer mechanism is provided between the base frame for supporting the engine and the engine to buffer vibrations of the base body,
The buffer mechanism includes a pin member provided on either the engine side or the base frame side and a boss member provided on either the engine side or the base frame side to cover the circumferential direction of the pin member And a rubber member provided over the entire circumference between the pin member and the boss-shaped member. 14. The method of claim 13,
Wherein the buffer mechanism is disposed at a portion on the output shaft side of the engine. The method according to claim 13 or 14,
A thrashing device is provided on an opposite side in the gas transversely direction of the operation control portion and on a rear side thereof,
Wherein an output shaft of the engine is connected to an input shaft of the threshing device.

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