KR102218515B1 - Combine - Google Patents

Abstract

In a combine equipped with an engine having an exhaust gas purification case, an object thereof is to suppress the influence of the arrangement of the engine room when a driving seat is provided on the engine room. The combine of the present invention comprises a mowing device 3 for mowing unharvested grain stems from packaging, a threshing device 5 for threshing the mowed grain stems mowed with the mowing device 3, a mowing device 3 and a threshing device 5 ) Equipped with a traveling gas 1, an engine 20 disposed in the engine room 43 on the traveling gas 1, and an exhaust gas purification case 50 disposed in the exhaust system of the engine 20. . A driver seat 10b is disposed on the upper surface side of the engine room cover 44 covering the engine room 43. In addition, the engine room cover 44 has a double structure in the portion below the driver's seat 10b and covering the top and front of the exhaust gas purification case 50, and openings 43d, 44e, and 44g for sucking outside air. I have.

Description

Combine {COMBINE}

The present invention relates to a combine that harvests grains by threshing the harvested grains by a threshing device while mowing uncut grains of a pavement by a mowing device, and more particularly, to an exhaust gas purification case for purifying the exhaust gas of an engine It relates to a combine equipped with.

In the conventional combine, a part of the exhaust gas purification case is protruded from the mowing device side, which is arranged so as to be lifted up and down on the front side of the traveling gas, and the exhaust gas purification case is disposed in the vicinity of the mowing device (for example, patent See document 1). In addition, the engine room top plate is formed in a stepped shape, and the exhaust gas purification case is disposed at a position higher than the lower portion of the driver's seat (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 2013-1 Japanese Patent Application Publication No. 2013-2

By the way, in the combine, since various devices such as a mowing device and a threshing device are provided, an engine room is formed under the driving unit in the right side of the mowing device, and the engine is mounted in the engine room. In recent years, there are many cases where the size of the engine room is limited due to a request for compactness and weight reduction of combines (in many cases, the engine mounting space is narrow). In the engine room where there are many restrictions, not only the engine but also various parts such as air cleaners and radiators are placed.

In addition, as the length of the exhaust system piping from the engine to the exhaust gas purification case increases, the temperature of the exhaust gas when it reaches the exhaust gas purification case naturally decreases. Since it is preferable that the temperature of the exhaust gas passing through the exhaust gas purification case is equal to or higher than a predetermined temperature, there is a request to arrange the exhaust gas purification case as close as possible to the engine.

Based on these points, in the prior art, in order to arrange the exhaust gas purification case as close as possible to the engine, a part of the exhaust gas purification case is conveniently located near the mowing device and slightly protrudes from the engine room. In this case, the engine itself is also disposed in the vicinity of the mowing device to secure the attachment position of the exhaust gas purification case on the upper surface side of the engine. In doing so, since the exhaust gas purifying case and a part of the engine protrude from the engine room, the left and right width dimensions of the engine and its surrounding structures become longer, and furthermore, there is a problem that it is difficult to easily compact the left and right width dimensions of the traveling body.

In addition, since it affects the amount of heat from the exhaust gas purification case and the cooling effect in the engine room is lowered, if a driver's seat is installed on the engine room, the effect of the engine room's heat is given to the operator, and its control. The environment becomes unpleasant. On the other hand, when the exhaust gas purification case is installed in the engine, the exhaust gas temperature becomes high, and therefore, efficient use of waste heat based on the high temperature exhaust gas is expected in a work vehicle such as a combine.

The present invention has made it a technical problem to provide a combine in which these conditions were examined and improved.

The invention of claim 1 includes a mowing device for mowing unharvested grains of a pavement, a threshing device for threshing the mowed grains harvested by the mowing device, a traveling body equipped with the mowing device and the threshing device, and on the traveling body. In a combine comprising an engine installed in an engine room and an exhaust gas purification case for processing exhaust gas of the engine, a driving seat is disposed on an upper surface side of an engine room cover covering the engine room, and the engine room cover The portion below the driver's seat and covering the upper and the front of the exhaust gas purification case has a double structure and has an opening for sucking outside air.

The invention of claim 2 is that, in the combine according to claim 1, the double structure part of the engine room cover communicates with the outside air intake side of the radiator, and a plurality of openings are formed in the upper and front surfaces of the double structure part.

In the present invention of claim 3, in the combine according to claim 1 or 2, a side column is disposed on the side of the aircraft in the engine room, wherein the exhaust gas purifying case is disposed to protrude downward from the side column, and the side column It means that the heat shield plate body was installed on the lower side, and the heat shield plate body was arranged at a height position near the double structure part of the engine room cover.

In the present invention of claim 4, in the combine according to claim 2, the radiator is disposed opposite to the cooling fan installed on one side of the engine, and a cooling wind guide plate for guiding the cooling wind passing through the radiator to the engine room is provided. Installed.

In the present invention of claim 5, in the combine according to claim 4, a shroud covering the exhaust side of the radiator is provided, the cooling fan of the engine is disposed in an opening formed in the shroud, and the cooling wind guide plate is provided in the It was fixed to both sides of the shroud and extended to the engine room.

According to a sixth aspect of the invention, in the combine according to claim 5, an air cleaner for introducing outside air into the engine is further provided, a new air introduction pipe from the air cleaner is disposed between the shroud and the engine, and the cooling water passage of the engine and It means that the cooling water pipes connecting the radiators are intersected above the new air inlet pipes and arranged.

The invention of claim 7 is a structure in which a threshing pulley for transmitting the engine output to the threshing device is disposed on a side opposite to the radiator in the engine room in the combine according to claim 6, and a rotating blade is coaxial with the threshing pulley. It was installed on.

The invention of claim 8 is an arrangement that is parallel to the exhaust gas purification case when viewed from a plan view in the combine according to claim 6, and the air cleaner is disposed on the rear upper side of the exhaust gas purification case, and the exhaust gas purification case An exhaust pipe connected to the exhaust side of the exhaust gas purification case and the air cleaner were installed to extend parallel to each other.

The invention of claim 9 is that, in the combine according to claim 8, a heat shield plate is disposed between the air cleaner and the exhaust pipe.

The invention of claim 10 is a structure in which an exhaust outlet pipe connected to the exhaust gas purification case and a tail pipe connected to the exhaust outlet pipe are provided in the combine according to claim 1, wherein the exhaust gas purification case support leg is The exhaust outlet pipe is supported by a detachable support member, and the tail pipe is fastened and fixed to the engine frame and the threshing device so as to be adjustable in an up-down direction, and from between the threshing device and the rear of the engine room toward the rear. In addition to the arrangement of the tail pipe, the exhaust side of the tail pipe was turned upward.

The invention of claim 11 is a structure in which a driving seat is arranged above the engine room in the combine according to claim 10, wherein the tail pipe is fixed above the rear portion of the engine room, and the gap between the driving seat and the tail pipe is It means that the control case was placed in a location where it was used.

In the present invention of claim 12, in the combine according to claim 10 or 11, the exhaust gas purification case and the exhaust outlet pipe are arranged above the engine so as to extend in a parallel shape with the axial direction of the output shaft of the engine when viewed from a plane. And, the inlet of the exhaust gas purification case is connected to the exhaust side of the engine at a position opposite to the cooling fan installed on one side crossing the output shaft of the engine.

(Effects of the Invention)

According to the invention of claim 1, a mowing device for mowing uncut grains of a pavement, a threshing device for threshing the mowed grains mowed by the mowing device, a traveling gas equipped with the mowing device and the threshing device, and the traveling gas In a combine comprising an engine installed in an upper engine room and an exhaust gas purification case for processing exhaust gas of the engine, a driving seat is disposed on an upper surface side of an engine room cover covering the engine room, and the engine room cover Is below the driver's seat and has a double structure that covers the upper and the front of the exhaust gas purification case, and has an opening for sucking outside air, so that the temperature increase outside the engine room cover can be suppressed, and the driver seat It is possible to prevent the heat in the engine room from being transmitted to an operator boarding the vehicle. Therefore, the exhaust gas purification case can be supported between the lower surface of the driver's seat and the upper surface of the engine, and the installation width of the driver's seat and the engine in the left and right directions can be easily reduced, while the upper surface side of the engine The exhaust gas purification case can be installed compactly. Further, it is possible to smoothly perform a filter regeneration operation in which the exhaust gas temperature in the exhaust gas purification case is maintained at a high temperature.

According to the invention of claim 2, since the double structure part of the engine room cover communicates with the outside air intake side of the radiator, and a plurality of openings are formed in the upper and front surfaces of the double structure part, the outside air of the radiator (cooling fan). The suction power can be used to ventilate the interior space in the double structure of the engine room cover. For this reason, it is not necessary to provide a ventilation fan or the like that allows air in the inner space of the engine room cover to enter and exit, and it can be configured at low cost.

According to the invention of claim 3, a side column is disposed on the side of the aircraft in the engine room, wherein the exhaust gas purification case is disposed so as to protrude downward from the side column, and the heat shield plate is disposed below the side column, Since the heat shield plate body is disposed at a height near the double structure part of the engine room cover, the wire or harness on the side column side can be easily protected by the heat shield plate body against heating of the exhaust gas purification case. have. Further, it is possible to prevent exhaust from being exhausted toward the operator of the driver's seat from the guide groove of each lever, etc., which are opened in the operation plate body on the upper surface of the side column.

According to the invention of claim 4, since the radiator is disposed opposite to the cooling fan installed at one side of the engine, and a cooling wind guide plate for guiding the cooling wind passing through the radiator to the engine room is installed, the radiator It has a configuration capable of efficiently supplying cooling wind into the engine room, and improves the cooling effect in the engine room. In particular, when the engine room is installed under the driver's seat and the engine is installed together with the exhaust gas purification case, heat storage in the engine room can be prevented, and thus the operator in the driver's seat It can prevent heat from being transmitted.

According to the invention of claim 5, a shroud covering the exhaust side of the radiator is installed, the cooling fan of the engine is disposed in an opening formed in the shroud, and the cooling wind guide plate is fixed to both sides of the shroud, and the Since it is installed extending to the engine room side, the cooling air introduced into the engine room by the cooling fan is less likely to leak to the outside of the engine room, so that the cooling effect of the engine can be improved.

According to the invention of claim 6, further comprising an air cleaner for introducing outside air into the engine, a new air introduction pipe from the air cleaner is disposed between the shroud and the engine, and a cooling water pipe connecting the cooling water passage of the engine and the radiator. Since the new air introduction pipes are arranged so as to be crossed above the new air introduction pipe, it is possible to suppress an increase in the temperature of the new air introduction pipe by a heating element such as an exhaust gas purification case, and it is possible to reduce deterioration of the new air introduction pipe. In addition, the new air introduction pipe and the cooling water pipe can be installed to be compactly extended by forming an appropriate distance vertically.

According to the invention of claim 7, a threshing pulley for transmitting the engine power to the threshing device is arranged on the opposite side of the radiator in the engine room, and the threshing pulley is coaxial with a rotating blade. A rotating blade is provided on the threshing pulley on the side opposite to the intake side in the above, and the cooling air inhaled from the radiator side can be efficiently passed in the engine room.

According to the invention of claim 8, the exhaust pipe is arranged parallel to the exhaust gas purification case when viewed from a plan view, the air cleaner is disposed on the rear upper side of the exhaust gas purification case, and is connected to the exhaust side of the exhaust gas purification case. Since the exhaust gas purification case and the air cleaner are installed extending parallel to each other, the air cleaner can be spaced apart from the exhaust gas purification case that is a high-temperature heat generating source, and the high temperature of the air cleaner is suppressed. can do. And, by arranging the exhaust pipe between the air cleaner and the exhaust gas purification case, the exhaust pipe functions as a heat shielding member for the exhaust gas purification case, thereby reducing the influence on the air cleaner by the arrangement of the exhaust gas purification case. can do. Accordingly, it is possible to suppress deterioration of the air cleaner by suppressing an increase in temperature of the air cleaner due to heating of the engine or the exhaust gas purification case.

According to the invention of claim 9, since the heat shield plate is disposed between the air cleaner and the exhaust pipe, the air cleaner is disposed above the heat shield plate, and the exhaust gas purification case and the exhaust pipe are disposed below the heat shield plate. Because of this configuration, it is possible to further suppress the influence of the exhaust gas purifying case on the air cleaner and the heat from the exhaust pipe.

According to the invention of claim 10, an exhaust outlet pipe connected to the exhaust gas purification case and a tail pipe connected to the exhaust outlet pipe are provided, wherein the exhaust gas purification case is exhausted by a support member detachable to the exhaust gas purification case support leg. In addition to supporting the outlet pipe, fixing the tail pipe to the engine frame and the threshing device so as to be adjustable in an up-down direction, and disposing the tail pipe from the rear of the threshing device and the engine room toward the rear. Since the exhaust side of the tail pipe is made upward, the exhaust gas purification case support leg can be used to integrally support the exhaust gas purification case and the exhaust outlet pipe, and the exhaust of the exhaust gas purification case The support position of the tail pipe can be adjusted according to the position of the outlet pipe. Therefore, not only can the components of the exhaust system be common and configured at low cost, but also the support rigidity in the supporting structure of the exhaust system can be improved. In addition, it is possible to easily absorb processing errors or assembly errors between the exhaust outlet pipe and the tail pipe, and improve the assembly workability of the exhaust outlet pipe and the tail pipe.

According to the invention of claim 11, a structure in which a driving seat is disposed above the engine room, wherein the tail pipe is fixed above the rear portion of the engine room, and an operation port case is provided at a position between the driving seat and the tail pipe. Because of the arrangement, the exhaust gas, which has become hot due to the regeneration treatment, is exhausted from the upper side of the combine. Therefore, it is possible to prevent ignition of not only straw scraps on the packaging but also dust remaining in the apparatus. In addition, by arranging the operation tool case on the rear of the driver's seat, the operation tool case can function as a heat shield between the driver seat and the tail pipe, and heat from the tail pipe can be prevented from being transmitted to the operator. I can.

According to the invention of claim 12, the exhaust gas purification case and the exhaust outlet pipe are disposed above the engine so as to extend in a parallel shape with the axial direction of the output shaft of the engine when viewed from a plan view, and cross the output shaft of the engine. Since the inlet of the exhaust gas purification case is connected to the exhaust side of the engine at a position opposite to the cooling fan installed on the side, the exhaust gas purification case and the exhaust outlet pipe are connected using a dead space on the upper surface of the engine. It can be placed compactly. In addition, the exhaust outlet pipe can be formed in a long length along the longitudinal direction of the exhaust gas purification case, and it is possible to reduce the temperature of the exhaust gas until it is discharged to the outside of the aircraft or to improve the noise function. In addition, since the tail pipe can be disposed in the space at the side of the threshing device, it is possible to improve the arrangement efficiency of the exhaust gas purification case, the exhaust outlet pipe, and the tail pipe for each dead space. In addition, the cooling air from the cooling fan lowers the temperature of the exhaust gas after the purification treatment on the exhaust gas withdrawal side (exhaust outlet side) through which the exhaust gas after the purification treatment passes in the exhaust gas purification case. The exhaust gas introduction side (exhaust inlet side) through which the exhaust gas passes is far from the cooling fan, so that the cooling wind is difficult to reach. Accordingly, the exhaust gas before the purification treatment is brought to a high temperature so that the purification performance of the exhaust gas purification case can be properly maintained. Further, the temperature of the exhaust gas after the purification treatment can be lowered to be discharged to the outside, and for example, ignition of straw scraps on the packaging can be prevented.

1 is a left side view of the combine for mowing in the 4th group of the present invention.
2 is a right side view of the combine.
3 is a plan view of the combine.
4 is a perspective view of the driving unit viewed from the upper left front side.
5 is a perspective view of the driving unit viewed from the rear left side.
6 is a left side view of the driver.
7 is a left side view of the engine room.
8 is a front view of the engine room.
9 is a plan view of the engine room.
10 is a plan sectional view of the engine compartment cover.
11 is a cross-sectional perspective view of an engine room cover.
12 is a front sectional view of the engine compartment cover.
13 is an exploded perspective view of a tail pipe connection portion.
14 is a diagram showing an arrangement of levers and switches on a side column.
Fig. 15 is a perspective view of the diesel engine as viewed from the right obliquely to the front.
Fig. 16 is a perspective view of the diesel engine as viewed obliquely from the left side.
Fig. 17 is a left side view of an engine room serving as a separate configuration example.
18 is a perspective view showing an arrangement position of a clutch operating mechanism.

Hereinafter, embodiments in which the combine according to the present invention is embodied will be described with reference to the drawings. In the following description, the left side toward the advance direction of the traveling body 1 is simply referred to as left, and similarly, the right side toward the advance direction is simply referred to as the right side. The combine of the embodiment will be described with reference to FIGS. 1 to 4. As shown in Figs. 1 to 4, a traveling body 1 supported by a pair of left and right traveling crawlers 2 (running unit) is provided. A four-row mowing device (3) for mowing grains is mounted on the front part of the traveling body (1) around the mowing rotation point axis (4a) by a single-acting hydraulic cylinder (4). Has been. A threshing device 5 having a feed chain 6 and a grain tank 7 for storing grain after threshing are mounted on the traveling body 1 in a horizontal arrangement. Further, the threshing device 5 is disposed on the left side toward the advancing direction of the traveling body 1, and the grain tank 7 is disposed on the right side toward the advancing direction of the traveling body 1 (see FIG. 3).

A discharge auger 8 for discharging grains in the grain tank 7 to the outside of the gas is disposed from the rear of the grain tank 7 to the upper side. It is comprised so that the front part of the grain tank 8 can rotate toward the gas side with the vertical auger 8a of the discharge auger 8 as the center. In front of the grain tank 7, a driving unit 10 is formed in the right front part of the traveling body 1. In the driving unit 10, a step 10a on which an operator is boarded, a driver seat 10b, a handle column 11 for installing a steering handle 10c, a peripheral speed lever 12 or an auxiliary shift lever 13 ) Or a work clutch lever 14 or a side column 15 provided with switches or the like.

As shown in FIGS. 1 and 2, in the traveling body 1, a diesel engine 20 as a power source of each drive unit is disposed below the driver seat 10b. Further, left and right track frames 21 are disposed on the lower surface side of the traveling body 1. The track frame 21 includes a drive sprocket 22 that transmits the power of the engine 20 to the traveling crawler 2, a tension roller 23 that maintains the tension of the traveling crawler 2, and a traveling crawler 2 A plurality of track rollers 24 are provided to hold the ground side of the tread in a folded state. The driving sprocket 22 supports the front side of the travel crawler 2, the tension roller 23 supports the rear side of the travel crawler 2, and the track roller 24 supports the travel crawler 2 Support the ground side.

As shown in Figs. 1 to 3, the mowing device 3 includes 4 trillions of grain popular devices 31 for popularizing uncut grains in the packaging, and a Varican type for cutting the main source of uncut grains in the packaging. The grain stem conveying device 33 which conveys the harvested grain stem from the harvesting blade device 32 and the grain stem conveying device 33 to the front end part (the delivery start end side) of the feed chain 6 from the grain stem popular device 31 is provided. The uncut grain of the packaging is popular by the grain popular device 31, the main circle of the uncut grain is cut by the cutting blade device 32, and the front end of the feed chain 6 by the grain popular device 31 The harvested grain is conveyed.

In the threshing device 5, the shaker sorting board 52 as a shake sorting mechanism for sorting the barrel 51 for threshing between grains and the threshing material falling below the barrel 51, and the rocking sorting board 52 A fan 53 for supplying air is provided, and an exhaust fan 61 for discharging exhaust gas at the rear portion of the swing sorting panel 52 to the outside of the aircraft is provided. An auger stand 125 is erected and installed on the upper surface side of the threshing device 5. The discharge auger 8 is supported at an upper storage position in the traveling body 1 via the auger stand 125. The discharge auger 8 is supported in an approximately horizontal position by an auger stand 125. As shown in Fig. 3, the discharge auger 8 at the storage position extends from the right rear corner of the traveling body 1 toward the left front corner.

As shown in FIGS. 1 and 2, a straw discharge chain 62 is disposed on the rear end side (delivery end side) of the feed chain 6. The waste straw (stalks from which grains have been stripped) received from the rear end of the feed chain 6 to the straw discharge chain 62 is discharged to the rear of the running gas 1 in a long state, or at the rear side of the threshing device 5 After being cut short to an appropriate length by the straw discharge cutter 63 installed in the vehicle, it is discharged to the rear and lower sides of the traveling gas 1.

On the lower side of the swing sorting board 52, the #1 conveyor 55 for withdrawing the grains (selected #1) selected from the swing sorting board 52, and grains, straw scraps, or grains attached to the ground are mixed. A second conveyor 56 for withdrawing the second sort is installed. In addition, it is installed so as to extend in the transverse direction above the rear portion of the traveling crawler 2 when viewed from the side in the order of the first conveyor 55 and the second conveyor 56 from the front side in the traveling direction of the traveling body 1 have.

The shaking sorting board 52 is configured to shake sorting (specific gravity sorting) the threshed material that has fallen below the barrel 51. As for the grain (first sorting material) that has fallen from the swing sorting board 52, the dust in the grain is removed by the sorting wind from the fan 53 and falls on the first conveyor 55. Of the first conveyor 55, a first double-grained barrel 57 extending in the vertical direction is at a terminal portion protruding outward from one side wall (right side wall in the embodiment) in the vicinity of the grain tank 7 in the threshing device 5 ) Is connected through communication. The grains withdrawn from the first conveyor 55 are carried into the grain tank 7 by the first grain conveyor (not shown) installed in the first grain container 57 and are collected in the grain tank 7.

The shaking sorting panel 52 transfers the second sorting material (reduced reprocessed material for re-sorting mixed grains and straw scraps) to the second conveyor 56 by shaking sorting (specific gravity sorting). It is configured to fall. The second sorting material withdrawn by the second conveyor 56 is returned to the upper surface side of the oscillating sorting board 52 through the second reduction tank 58 and the second processing unit 59 and is re-selected. In addition, straw debris and dust in the pellets from the barrel 51 are separated from the rear part of the traveling body 1 toward the pavement by the sorting wind from the fan 53 and the suction and exhaust action of the exhaust fan 61. Is discharged.

Next, the mounting structure of the diesel engine 20 will be described with reference to FIGS. 4 to 9. As shown in Figs. 6 to 8, the diesel engine 20 is vibrated and supported on the lower side of the driver's seat 10b in the traveling body 1 via the engine bed 41. The driving force of the diesel engine 20 is transmitted to each part of the front part of the track frame 21, such as the transmission case 42 for driving drive and the threshing device 5, through a pulley/belt transmission system. The front side and the top side of the diesel engine 20 are covered by an engine room cover 44. Further, a partition plate body 16 which is a heat insulating plate is provided below the side column 15, and a part of the upper surface side of the diesel engine 20 is covered by the partition plate body 16. The front side of the engine room 43 is formed by the engine room cover 44, and the upper surface side of the engine room 43 is formed by the engine room cover 44 and the partition plate body 16.

In addition, as shown in FIG. 8, a box-shaped wind tunnel case 46 is erected and installed at the right end of the driving unit 10 in the traveling body 1 via an opening/closing point shaft 45. The radiator 47 for water cooling is erected and installed inside the plane of the wind tunnel case 46 on the upper surface side of the traveling body 1, and the radiator 47 is replaced with the cooling fan 48 of the diesel engine 20. Outside air (cooling wind) is introduced into the wind tunnel case 46 from the opening 46a on the right side of the wind tunnel case 46, and through the radiator 47 from the inside opening 46b on the left side of the wind tunnel case 46. The cooling wind, which has been damped by rotation of the cooling fan 48, is sent into the engine room 43 to cool the diesel engine 20 or the like by the cooling wind that is damped. In addition, a vibration suppression net is provided in the opening 46a on the right side of the wind tunnel case 46 on the outside of the aircraft. The presence of the vibration suppression net prevents intrusion of straw or the like into the inside of the wind tunnel case 46 and into the engine room 43.

Further, a shroud 481 of the embodiment that covers the entire ventilation range portion of the radiator 47 is fixed, and a cooling fan 48 is disposed in an opening formed in the shroud 481. That is, a cooling fan 48 is disposed in the left side of the radiator 47, and a fan shroud 481 is disposed between the cooling fan 48 and the radiator 47 to guide cooling wind. Wind direction plates (cooling wind guide plates) 482 and 483 are extended and installed at the front and rear ends of the fan shroud 481 toward the engine room 43 side. That is, the front side wind direction plate 482 has a right edge connected and fixed to the front side of the fan shroud 481 to cover the right side of the front side of the diesel engine 20, while the rear side wind direction plate 483 is the right side at the rear side of the fan shroud 481. The edges are connected and fixed to cover the rear right side of the diesel engine 20.

The height of the front wind direction plate 482 is lower than the height of the rear wind direction plate 483, and the upper end of the front wind direction plate 482 is disposed at a position lower than the lower end of the engine room cover 44. On the other hand, the upper end of the rear wind direction plate 483 is set to be substantially the same height as the upper end of the opening of the fan shroud 481 (see Fig. 17). Since the exhaust gas purification case 50 is disposed above the front wind direction plate 482 by lowering the upper end of the front wind direction plate 482, the regeneration temperature in the exhaust gas purification case 50 decreases. Can be suppressed.

As described above, the radiator 47 is disposed opposite to the cooling fan 48 installed on one side of the diesel engine 20, and cooling to induce the cooling wind passing through the radiator 47 to the engine room 43 Wind guide plates (482, 483) are installed. This improves the cooling effect in the engine room 43 by making it possible to efficiently supply the cooling wind of the radiator 47 into the engine room 43. Further, the cooling wind guide plates 482 and 483 are fixed to both sides of the shroud 481 in a structure in which the shroud 481 is installed on the exhaust side of the radiator 47. Then, an air supply pipe (new introduction pipe) 108 from the air cleaner 49 is disposed between the shroud 481 and the diesel engine 20. By arranging the air supply pipe 108 on the shroud 481 side, temperature rise caused by a heating element such as the exhaust gas purification case 50 is suppressed, and deterioration of the air supply pipe 108 is suppressed.

The radiator 47 includes a cooling water pipe 471 that connects to the cooling water passage of the diesel engine 20. The cooling water pipe 471 is connected to the opening above the radiator 47 and causes the cooling water circulating through the diesel engine 20 to be refluxed to the radiator 47. The cooling water pipe 471 is disposed above the air supply pipe 108 so as to intersect with the air supply pipe 108 connected to the air cleaner 49. The connection side of the cooling water pipe 471 to the diesel engine 20 is disposed on the diesel engine 20 side rather than the supply pipe 108. That is, the cooling water pipe 471 is set to pass between the supply pipe 108 and the diesel engine 20 and the exhaust gas purification case 50. Accordingly, the supply pipe 108 and the cooling water pipe 471 can be compactly extended and installed at appropriate intervals, and the cooling water pipe 471 on the reflux side functions as a heat shielding member for the supply pipe 108.

In addition, a pair of left and right engine room posts 71 are erected and installed on the rear side of the driving unit 10 on the upper surface of the traveling body 1, and a rear plate body 72 is provided between the left and right engine room posts 71. It is installed over. That is, the engine room 43 is formed (division) by the partition plate body 16, the engine room cover 44, the wind tunnel case 46, and the rear plate body 72. The diesel engine 20 is arranged in the engine room 43 with the output shaft 20a (crankshaft) of the diesel engine 20 facing left and right. In addition, a running drive belt 73 and a threshing drive belt 74 are connected to the left end (protruding end) of the output shaft 20a by protruding the left end of the output shaft 20a to the left side of the diesel engine 20. . The driving force of the diesel engine 20 is output from the output shaft 20a through the traveling drive belt 73 toward the traveling crawler 2, and the diesel engine 20 is transmitted from the output shaft 20a through the threshing drive belt 74. The driving force is output toward the threshing device 5.

On the other hand, as shown in FIGS. 4 to 12, an air cleaner 49 for supplying fresh air to the diesel engine 20 and an exhaust gas purification case 50 for processing exhaust gas of the diesel engine 20 are provided. The upper surface side of the engine room cover 44 is formed in multiple stages in a step shape, so that the front upper surface 441 of the upper surface side of the engine room cover 44 is formed low, and the rear upper surface 442 is formed high. The engine room cover 44 is installed by connecting the front end of the front upper surface 441 to the upper end of the front surface 443 installed upright above the step 10b, and standing upright from the rear end of the front upper surface 441 The rear upper surface 442 is connected to the upper end of the rear surface 444. An auxiliary cover body 440 is provided between the rear end side of the rear upper surface 442 of the engine room cover 44 and the upper end of the left and right engine room posts 71. By fixing the air cleaner 49 to the lower surface of the auxiliary cover body 440, the air cleaner 49 is positioned below the rear upper surface 441 of the engine room cover 44 and the auxiliary cover body 442.

A noise box body 40 is mounted on the upper surface side of the auxiliary cover body 440. The inside of the noise box body 40 is communicated to the wind tunnel case 46 through the new air introduction pipe body 39 to communicate the air cleaner 49 inside the noise box body 40. It is configured to introduce air in the wind tunnel case 46 to the intake manifold 19 of the diesel engine 20 via the air cleaner 49. The wind tunnel case 46, the new air introduction pipe body 39, and the noise box body 40 correspond to the outside air introduction part located outside the engine room 43. Further, an electric box 38 is provided on the upper surface side of the noise box body 40. An engine controller or the like is incorporated in the electric box 38.

On the other hand, on the upper surface side of the front upper surface 441 in the engine room cover 44, the driver's seat 10b is supported through the seat support mechanism 10d. The exhaust gas purification case 50 is disposed on the front upper surface 441 of the engine room cover 44 and on the lower side of the partition plate body 16. The exhaust gas purification case 50 is formed in a long cylindrical shape, and is supported on the upper surface side of the diesel engine 20. In other words, the direction of the axis of the output shaft 20a of the diesel engine 20 and the direction of movement of the exhaust gas inside the exhaust gas purification case 50 are matched. In the longitudinal direction of the exhaust gas purification case 50, the output shaft 20a of the diesel engine 20 has a parallel shape.

A lever case (operation tool case) 28 for accommodating the work clutch levers 26 and 27 is disposed at the rear position of the side column 15. The lever case 28 is fixed at the upper end of the engine room post 71 and is disposed on the left side of the electric box 38 behind the driving seat 10b. That is, the lever case 28 is disposed in front of the tail pipe 84 to cover the rear end side from the middle portion of the tail pipe 84. Further, on the right side of the lever case 28, an auger stand 125 for supporting the discharge auger 8 is disposed. The auger stand 125 is fixed to the upper front surface of the threshing device 5.

By configuring in this way, the electric box 38, the lever case 28, and the auger stand 125 are arranged side by side at the rear of the driver's seat 10b. Therefore, in the rear of the driver's seat 10b, the electric box 38, the lever case 28, and the auger stand 125 can function as a heat shield member that blocks the arrangement from the tail pipe 84. Accordingly, it is possible to prevent the heat from the tail pipe 84 from being transmitted to the operator who boards the driver's seat 10b. The filter regeneration operation or the like in which the temperature of the exhaust gas in the exhaust gas purification case 50 is maintained at a high temperature can be performed smoothly. Further, by disposing the lever case 28 at the rear of the side column 15, the operation tool is disposed on one side of the operator seated in the driver's seat 10b, so that the operability of the operator can be improved.

The exhaust gas purification case is located on the lower side of the front upper surface 441 of the engine room cover 44 by placing the exhaust gas introduction side (exhaust inlet side) of the exhaust gas purification case 50 below the partition plate body 16. The exhaust gas outlet side (exhaust outlet side) of (50) is positioned. An exhaust inlet pipe 81 is provided on the exhaust gas introduction side of the exhaust gas purification case 50, and an exhaust outlet pipe 82 is provided on the exhaust gas extraction side of the exhaust gas purification case 50. The exhaust inlet pipe 81 of the exhaust gas purification case 50 is connected to the exhaust manifold 83 of the diesel engine 20 through the turbine case 106 of the turbocharger 105 to be described later, and the exhaust inlet pipe ( 81) and the exhaust manifold 83 are in communication. The tail pipe 84 is extended and provided between the threshing device 5 and the grain tank 7, and the exhaust outlet pipe 82 is communicated with the tail pipe 84. The exhaust gas discharged from the exhaust manifold 83 of the diesel engine 20 is discharged from the exhaust gas purifying case 50 to the outside of the aircraft through the tail pipe 84.

In addition, as shown in Figs. 7 to 12, the engine room cover 44 is formed in a double structure, and the left ends of the inner spaces 44a and 44c of the double structure engine room cover 44 are opened to open the wind tunnel case. It communicates with the internal space 46c of (46). The engine room cover 44 is an upper surface of the front upper surface 441 which has a double structure, and has openings 44d and 44e for inhaling outside air at positions on the left and right sides of the driving seat 10b. The upper surface 441 of the front part of the engine room cover 44 protrudes from the left and right portions of the seat support mechanism 10d to form a double structure to form the inner spaces 44a, 44b, and the inner spaces 44a, 44b ) Openings 44d and 44e are formed on each of the upper surfaces. In addition, the openings 44d and 44e for inhaling outside air are provided with a vibration damping net to prevent entry of straw debris or the like into the inner spaces 44a and 44b. Further, the opening 44f formed at the right end of the inner space 44a is communicated with the upper opening 46d formed in the wind tunnel case 46. On the other hand, a heat insulating plate body 445 is provided below the front upper surface 441 at a position equal to the height of the partition plate body 16 so as to cover the entire surface of the front upper surface 441.

The engine room cover 44 has an opening 44g for inhalation of outside air formed in the front surface of the front surface 443 which is a double structure. In addition, the opening 44g for inhaling outside air is provided with a vibration suppression net so as to prevent intrusion of straw debris or the like into the inner space 44c. The front surface 443 of the engine room cover 44 forms an inner space 44c with the upper side open and communicates with each of the inner spaces 44a and 44b of the front upper surface 441. Further, the opening 44h formed at the right end of the inner space 44c is communicated with the lower opening 46e formed in the wind tunnel case 46. Meanwhile, a heat insulating plate body 445 is installed at the rear of the front surface 443 to cover the entire surface of the front surface 443. In addition, a heat insulating plate body 445 is installed in the rear of the rear surface 444 to cover the entire rear surface 444 as well as the front surface 443.

The wind tunnel case 46 has a plurality of upper and lower openings 46a installed across the vibration damping net, and a shielding plate 46f covering the openings 46a disposed at the lower side is placed in the inner space 46c. Are doing. The shielding plate 46f is provided with a plurality of slits opened in the vertical direction, and is detachably provided on the left side of the wind tunnel case 46. By arranging the shielding plate 46f covering the outer opening 46a formed at the lower end of the aircraft at a position opposite to the opening 46b inside the aircraft, dust intruding from the gap such as the outer opening 46a is prevented from the shielding plate 46f. Can be prevented. Further, by configuring the shielding plate 46f to be detachable, dust can be easily removed from the shielding plate 46f.

In the engine room cover 44 having a double structure as described above, the inner spaces 44a and 44b of the front upper surface 441 and the inner space 44c of the front surface 443 communicate with the wind tunnel case 46 In this regard, a ventilation path to the engine room 43 is formed through the wind tunnel case 46. When the inside opening 46b side of the wind tunnel case 46 becomes negative pressure due to the rotation of the cooling fan 48, the engine room cover 44 opens the openings 44d and 44e of the front upper surface 441, and the front surface ( Outside air is sucked from the opening 44g of 443.

Part of the outside air supplied from the opening 44d of the front upper surface 441 flows to the right from the opening 44d and flows into the inner space 46c of the wind tunnel case 46 through the opening 44f at the right end. Then, the rest of the outside air supplied from the opening 44d flows to the front of the inner space 44a and flows into the inner space 44c of the front surface 443 communicating to the front of the inner space 44a. In addition, the outside air supplied from the opening 44e of the front upper surface 441 flows to the front of the inner space 44b and thus flows into the inner space 44c of the front surface 443 communicating in front of the inner space 44a. . On the other hand, the outside air supplied from the opening 44g of the front surface 443 merges with the outside air introduced from the internal spaces 44a and 44b and flows to the right side, and the internal space of the wind tunnel case 46 through the opening 44h at the right end. It flows into (46c).

In this way, cooling air by outside air flows through the inner spaces 44a to 44c of the engine room cover 44 of the double structure. Therefore, the heat on the engine room 43 side by the heat insulating action of the inner space 44d of the engine room cover 44 is transferred to the driver seat 10b or the engine room cover 44 on the upper side of the engine room cover 44. It can suppress that it is transmitted to the step 10a on the front side. In addition, by using the configuration in which outside air is introduced from the engine room cover 44, the temperature increase outside the engine room cover 44 is suppressed even if the top and front of the exhaust gas purification case 50 are covered with the engine room cover 44. This can be done, and heat in the engine room 43 can be prevented from being transmitted to an operator who boards the driver's seat 10b.

As described above, the driving seat 10b is disposed on the upper surface side of the engine room cover 44 covering the engine room 43. In addition, the engine room cover 44 has a double structure in the portion below the driver's seat 10b and covering the top and front of the exhaust gas purification case 50, and openings 43d, 44e, and 44g for sucking outside air. Have. Accordingly, it is possible to suppress an increase in temperature outside the engine room cover 44 and prevent heat in the engine room 43 from being transmitted to an operator who boards the driver's seat 10b. Therefore, the exhaust gas purification case 50 can be supported between the lower surface of the driver's seat 10b and the upper surface of the diesel engine 20, and the installation width of the driving seat 10b and the diesel engine 20 in the left and right directions is easy It is possible to compactly install the exhaust gas purification case 50 on the upper surface side of the diesel engine 20 while being able to be reduced in size. Further, the filter regeneration operation in which the temperature of the exhaust gas in the exhaust gas purification case 50 is maintained at a high temperature can be smoothly performed.

In addition, the exhaust gas purification case 50 is installed in the engine room 43 below the driving seat 10b, and an air cleaner 49 is installed in the engine room 43 behind the driving seat 10b. have. Accordingly, the exhaust gas purifying case 50 that becomes high temperature and the air cleaner 49 for introducing outside air can be arranged in a compact manner by being adjacent to each other above the diesel engine 20. For example, since both the diesel engine 20 and the air cleaner 49 can be adjacent to the cooling air introduction part of the diesel engine 20, outside air from the cooling air introduction part of the diesel engine 20 to the air cleaner 49 It can be easily introduced.

Further, the radiator 47 is disposed adjacent to the diesel engine 20, and the internal space of the engine room cover 44 of the double structure is communicated with the outside air intake side of the radiator 47. Accordingly, the internal spaces 44a to 44c of the engine room cover 44 can be ventilated by using the external air suction force of the radiator 47 (cooling fan 48). For this reason, it is not necessary to provide a ventilation fan or the like for letting air in and out of the inner spaces 44a to 44c of the engine room cover 44, and it can be configured at low cost.

5 to 8, 12 and 13, the exhaust outlet pipe 82 is bent in an L-shape toward the left and right center side of the traveling body 1, and the lower side of the partition plate body 16 (threshing It is bent in an L shape toward the rear at the entrance between the apparatus 5 and the grain tank 7). That is, the exhaust outlet pipe 82 has a crank shape when viewed from a plan view. Accordingly, the mid-length portions of the exhaust gas purification case 50 and the exhaust outlet pipe 82 are adjacent so as to extend parallel to the axial direction of the output shaft 20a of the diesel engine 20 when viewed from a plan view. The rear end side of the exhaust outlet pipe 82 and the front end side of the tail pipe 84 communicate with each other.

The tail pipe 84 discharges exhaust gas from between the threshing apparatus 5 and the grain tank 7 to the rear upper side. The tail pipe 84 is bent so that the front end side is bent downward, the middle part is extended upward, and the rear end side is bent so as to extend from the upper side of the rear part of the traveling crawler 2 to the rear. That is, the tail pipe 84 has a crank shape when viewed from the side. The rear end side of the tail pipe 84 is opened obliquely upward in the rear. In addition, the rear end side of the tail pipe 84 has a structure in which the front is bent toward the threshing device 5 side, and the rear side is toward the grain tank 7 side, and is bent in a C shape when viewed from a plan view. The rear end side of the tail pipe 84 has a curved shape in which the upper end of the No. 1 double grain container 57 connected to the grain tank 7 is bypassed.

When viewed from the side, the intermediate support bracket 185 is welded and fixed to the middle part of the crank-shaped tail pipe 84 in the vertical direction. An attachment plate 186 is welded and fixed to the left side of the left engine room post 71. The intermediate support bracket 185 of the tail pipe 84 is attached to the attachment plate 186 of the left engine room post 71 through an approximately L-shaped connection bracket 187 and bolted to enable position adjustment. A pair of adjustment slots 190 arranged vertically in vertical length on the attachment plate 186 of the left engine room post 71, and the vertical piece of the connection bracket 187 through both adjustment slots 190 The mounting plate 186 is fixed so that the vertical position can be adjusted. And, forming a pair of adjustment slots 191 arranged back and forth in left and right lengths on the middle support bracket 185 of the tail pipe 184, and the horizontal piece of the connection bracket 187 through both adjustment slots 191 The middle support bracket 185 is fixed so that the left and right position can be adjusted.

A substantially L-shaped upright bracket 188 is welded and fixed to the rear end of the tail pipe 84. An approximately L-shaped connection bracket 189 is fastened and fixed to the right side of the threshing device 5. The horizontal piece of the upright bracket 188 is bolted from above to a connecting bracket 189 fixed to the right side of the upper surface of the threshing device 5. A pair of adjustment slots 192 arranged back and forth in left and right lengths are formed on the horizontal piece of the upright bracket 188, and the horizontal piece of the upright bracket 188 and the connecting bracket 189 are formed by both adjustment slots 192. The horizontal piece is fixed so that the left and right position can be adjusted. A pair of adjustment slots 193, which are arranged back and forth in vertical length, are formed on the longitudinal piece of the connecting bracket 189, and the longitudinal piece of the connecting bracket 189 is formed of the threshing device 5 through both adjustment slots 193. It is fixed on the right side of the upper surface so that the vertical position can be adjusted.

Since the tail pipe 84 can be fixed to each of the threshing device 5 and the engine room post 71 so that the vertical position can be adjusted, processing errors and assembly errors of the exhaust outlet pipe 82 and the tail pipe 84 are prevented. It can be simply absorbed. Thereby, the assembling workability of the exhaust outlet pipe 82 and the tail pipe 84 can be improved. In addition, the threshing device 5 and the engine room prop 71 can be used as a support member for the tail pipe 84 to produce a support structure for the tail pipe 84 at low cost.

6, 7 and 9, the exhaust inlet inner diameter at the front end of the tail pipe 84 is formed larger than the exhaust outlet outer diameter at the rear end of the exhaust outlet pipe 82. In the exhaust outlet of the exhaust outlet pipe 82, the exhaust inlet of the tail pipe 84 is closed in a regrettable shape. For this reason, negative pressure is sucked into the tail pipe 84 from the gap between the exhaust outlet of the exhaust outlet pipe 82 and the exhaust inlet of the tail pipe 84. In addition, since the tail pipe 84 can be cut out from the vibration system of the diesel engine 20, the tail pipe 84 may be damaged due to the difference in the vibration frequency of the diesel engine 20 side and the traveling body 1 side. Can be particularly suppressed.

5 to 8 and 12, while supporting the exhaust inlet side of the tail pipe 84 at approximately the same height as the height of the exhaust gas purification case 50 above the diesel engine 20, the threshing device 5 ) The exhaust outlet side of the tail pipe 84 is supported at a position higher than the upper surface. In addition, the tail pipe 84 is disposed between the threshing device 5 and the grain tank 7 so that the rear end side of the tail pipe 84 covers the upper side of the wind tunnel pulley 89 for inputting the driving force of the diesel engine 20 to the threshing device 5. Has been. The outside air warmed by the arrangement of the tail pipes 84 by the shielding in the tail pipe 84 and the pulley cover plate body (the wind vent pulley cover) 88 is sucked into the wind vent fan 53 as a sorting wind.

A barrel pulley 86 connected to the barrel input shaft 85 is disposed on the right front side of the threshing device 5. The barrel pulley 86 transmits the driving force of the engine 20 transmitted to the wind tunnel pulley 89 to the barrel input shaft 85 by interlocking with the wind tunnel pulley 89 and the belt. Further, the barrel input shaft 85 is connected to the rotation shaft 51a of the barrel 51 through the bevel gear mechanism 85a, and transmits the rotational drive transmitted by the barrel pulley 86 to the barrel 51. The rapid pulley 86 is disposed at a position between the threshing device 5 and the engine room 43, and covers the front and upper sides thereof with a pulley cover plate body (rapid pulley cover) 87.

Further, the harvesting device 3 is configured to be capable of vertical rotation around a horizontally long harvesting input pipe 130 axially supported by a harvesting stand 133 in front of the threshing device 5. The power from the rapid input shaft 85 can be transmitted to the mowing input shaft 132 in the mowing input pipe 130 through the inlet clutch 131 that transmits a constant rotational force to the mowing device 3. That is, the mowing device 3 is forcibly driven at a constant high speed regardless of whether the vehicle speed is fast or slow by directly transmitting the power from the diesel engine 20 to the mowing device 3 without passing through the transmission case 42. It becomes possible to let it do.

The inlet clutch 131 includes a clutch operation mechanism 151 provided with a sector gear 141 (see FIG. 17), which is a rotating member rotatable around a rotation shaft by driving of a single electric motor 140, and a link mechanism 152. ). The clutch operating mechanism 151 that acts on the inlet clutch 131 is fixed to the post frame on the front right side of the threshing device 5, like the rotation point 153 of the inlet clutch 131, so that the lower left side of the cascading pulley 86 Is placed in Thereby, the length of the link mechanism 152 which connects the inflow clutch 131 and the clutch operating mechanism 151 can be shortened, and it can comprise compactly.

The tail pipe 84 has its intermediate part located on the right side of the barrel 86. In addition, a rotating blade 90 with the barrel input shaft 85 coaxially disposed on the barrel pulley 86 to face the tail pipe 84. Therefore, the air warmed in the engine room 43 can be exhausted to the threshing apparatus 5 side by rotating the rotor blade 90 in accordance with the rotation of the rapid pulley 86. Thereby, the heated air passing through the inside of the engine room 43 is guided to the space surrounded by the tail pipe 84, the cascading pulley cover 87, and the threshing device 5. Then, the outside air warmed by the arrangement of the tail pipes 84 is sucked into the wind blower fan 53 as a sorting wind.

In addition, as the rotary blade 90 rotates together with the barrel pulley 86, negative pressure is generated in the space between the threshing device 5 and the tail pipe 84. For this reason, the outside air on the side of the threshing apparatus 5 flows toward the quick-moving pulley 86, and can cool the clutch operating mechanism 151 arrange|positioned at the lower left of the quick-moving pulley 86. As a result, excessive heating of the clutch operating mechanism 151 can be prevented, thereby preventing a failure of the electric motor 140 based on heating.

In addition, above the diesel engine 20, the exhaust gas purification case 50 and the exhaust outlet pipe 82 are arranged to extend in a parallel shape with the axial direction of the output shaft 20a of the diesel engine 20 when viewed from a plane. have. Therefore, the exhaust gas purification case 50 and the exhaust outlet pipe 82 can be arranged compactly using the dead space on the upper surface side of the diesel engine 20. In addition, the exhaust outlet pipe 82 can be formed in a long length along the longitudinal direction of the exhaust gas purification case 50, and it is possible to reduce the temperature of the exhaust gas until it is discharged to the outside or to improve the noise function. It becomes possible. Further, after the exhaust gas purification case 50 and the exhaust outlet pipe 82 are arranged in the space on the upper surface of the diesel engine 20, the tail pipe 84 can be arranged in the space on the side of the threshing apparatus 5, It is possible to improve the arrangement efficiency of the exhaust gas purification case 50, the exhaust outlet pipe 82 and the tail pipe 84 for each dead space.

In addition, it is an arrangement parallel to the exhaust gas purification case 50 when viewed from the top, and an air cleaner 49 is disposed on the rear and upper side of the exhaust gas purification case 50, so that the exhaust side of the exhaust gas purification case 50 An exhaust outlet pipe 82 to be connected to the exhaust gas purification case 50 and the air cleaner 49 are provided to extend parallel to each other. By disposing the air cleaner 49 apart from the exhaust gas purifying case 50, which is a high-temperature heat generating source, and disposing the exhaust outlet pipe 82 between the air cleaner 49 and the exhaust gas purifying case 50, The influence on the air cleaner 49 due to the arrangement of the exhaust gas purification case 50 can be reduced.

As shown in FIG. 8, a lever point shaft mechanism 17 supporting the work clutch lever 14 or the like is disposed on the lower side of the side column 15 and above the partition plate body 16. On the left side of the partition plate body 16 or the exhaust gas purification case 50, there is a clutch operation link mechanism 18 that tensions or relaxes the threshing drive belt 74 and the like in connection with operation of the work clutch lever 14, etc. Are being deployed. A side column cover 15a covering the left side of the lever point shaft mechanism 17 and the clutch operation link mechanism 18 is provided. In the embodiment, the upper end of the side column cover 15a is connected to the lower left side of the side column 15. The clutch operation link mechanism 18 is located between the partition plate body 16 and the exhaust gas purification case 50 and the side column cover 15a.

In addition, the exhaust gas purification case 50 is disposed so as to protrude to the lower side of the side column 15, and is provided with a partition plate body (heat shield body) 16 under the side column 15. Then, the partition plate body 16 is disposed at a height position near the double structure portion of the engine room cover 44. Therefore, the wire or harness on the side column 15 side can be easily protected by the partition plate body 16 which is a heat shield plate against heating of the exhaust gas purification case 50 or the like. Further, it is possible to prevent exhaust from being exhausted toward the operator of the driver's seat 10b from the guide grooves of the levers 12 to 14 that are opened in the operation plate body on the upper surface of the side column 15.

In the side column 50, as shown in Fig. 14, the peripheral speed lever 12 and the auxiliary shift lever 13 are arranged in a left and right position in the front right position of the driver's seat 10b, and the auxiliary shift lever 13 ) Is disposed in front of the aircraft posture adjustment lever 161 for setting the inclination angle of the left and right or front and rear of the traveling body 1. That is, in a position in front of the side column 50 and close to the steering handle 10c, the peripheral speed lever 12, the sub-shift lever 13, and the aircraft attitude adjustment lever 161, which are operating levers of the traveling system, are arranged. Are being deployed. In addition, the side column 50 is provided with a liquid crystal display 162 in a position in front of the peripheral speed lever 12 to display the running state and the working state of the combine, which is a work machine, on the liquid crystal display 162.

In the side column 15, as shown in FIG. 14, the work clutch lever 14 is arrange|positioned at the position which becomes the rear of the peripheral speed lever 12. The work clutch lever 14 combines a lever for power step operation of the mowing device 3 and a lever for power step operation of the threshing device 5 as one, and has a guide groove formed on the upper surface of the side column 15. Accordingly, it is configured to be able to move inclined forward and backward. When the work clutch lever 14 is placed at the rear end of the guide groove, power to both the mowing device 3 and the threshing device 5 is cut off. And, when the work clutch lever 14 is placed in the middle of the guide groove, power is transmitted only to the threshing device 5, and when the work clutch lever 14 is placed in the front end of the guide groove, the mowing device 3 and the threshing device 5 ) It transmits power to both sides.

As shown in Fig. 14, the side column 15 is in order from the front to the driver's seat 10b from the position where the work clutch lever 14 is arranged, the accelerator dial 163, the forward rotation control switch 164, and the regeneration switch ( 165). The accelerator dial 163 is for adjusting and operating the rotation speed of the diesel engine 20. The forward rotation control switch 164 is for operating on and off of the forward rotation control to maintain a constant rotation speed of the diesel engine 20. The regeneration switch 165 is for selectively operating whether or not to execute the exhaust gas purification device (exhaust gas purification case) 50. The accelerator dial 163, the forward rotation control switch 164, and the regeneration switch 165 are provided on the left side of the driver's seat 10b for ease of use by the operator.

The accelerator dial 163 is capable of manually adjusting the engine speed, and is used to keep the engine speed constant during operation. Since the threshing performance is deteriorated if the engine 20 rotation speed changes during work, it is desirable to maintain it all the time during work, and the accelerator dial 163 maintains the rotation speed while performing work, so it is a control dial that is well used during work. . Further, the forward rotation control switch 164 turns on and off the eco mode so that even if the load of the threshing device 5 fluctuates, the rotation of the diesel engine 20 is kept constant and stable threshing and selection is always performed.

The regeneration switch 165 is constituted by a switch with a regeneration lamp, and by blinking the regeneration lamp, the operator notifies that the clogged state of the exhaust gas purification device (exhaust gas purification case) 50 exceeds a limit amount. Then, the operator turns on the regeneration switch 165 to perform regeneration of the exhaust gas purification device 50 to burn PM in the exhaust gas purification device 50. When the exhaust gas purification device 50 is being regenerated, the regeneration switch 165 lights up a regeneration lamp to inform the operator that regeneration of the exhaust gas purification device 50 is being executed.

Next, the structure of the diesel engine 20 will be described with reference to FIGS. 15 and 16. 15 and 16, an intake manifold 19 is disposed on one side (rear side) of the cylinder head 91 of the diesel engine 20. The cylinder head 91 is mounted on a cylinder block 92 in which an output shaft 20a and a piston (not shown) are incorporated. An exhaust manifold 83 is disposed on the other side (front side) of the cylinder head 91. That is, in the diesel engine 20, the intake manifold 19 and the exhaust manifold 83 are divided and arrange|positioned at both sides where the output shaft 20a was inserted. The output shaft 20a is protruded from the left and right sides of the cylinder block 92 to the left and right outward.

15 and 16, the flywheel housing 93 is fixed to the left side of the cylinder block 92. As shown in FIG. Install the flywheel 94 in the flywheel housing 93. It is comprised so that the driving force of the diesel engine 20 may be taken out toward the transmission case 42 from the left end side of the output shaft 20a which supported the flywheel 94 shaft. Further, an oil pan 95 is disposed on the lower surface of the cylinder block 92. A cooling fan 48 is disposed on the right side of the cylinder block 92, and a radiator 47 is provided to face the cooling fan 48 (see FIGS. 8 and 9).

That is, in the diesel engine 20, the cooling fan 48 is disposed on one side (the right side of the cylinder block 92) crossing the output shaft 20a, and the side opposite to the one side crossing the output shaft 20a. A flywheel 94 is disposed on the other side (the left side of the cylinder block 92). The exhaust gas inlet side (exhaust inlet side) of the exhaust gas purification case 50 is located near the flywheel 94, and the exhaust gas outlet side (exhaust outlet side) of the exhaust gas purification case 50 is a cooling fan 48 It is located nearby.

With this configuration, the cooling wind from the cooling fan 48 reaches the exhaust gas extraction side (exhaust outlet side) through which the exhaust gas after the purification treatment passes in the exhaust gas purification case 50 to reduce the temperature of the exhaust gas after the purification treatment. Lowers. In the exhaust gas purification case 50, the exhaust gas introduction side (exhaust inlet side) through which the exhaust gas before the purification process passes is far from the cooling fan 48, so that the cooling wind is difficult to reach. Accordingly, the exhaust gas before the purification treatment is brought to a high temperature, so that the purification performance of the exhaust gas purification case 50 can be properly maintained. Further, the temperature of the exhaust gas after the purification treatment can be lowered to be discharged to the outside, and for example, ignition of straw scraps on the packaging can be prevented.

15 and 16, an exhaust gas recirculation device (EGR device) 96 for introducing exhaust gas for recirculation is disposed in the intake manifold 19. The air cleaner 49 is connected to the intake manifold 19 via a compressor case 107 and an exhaust gas recirculation device 96 of a turbocharger 105 to be described later. The fresh air (external air) that has been sucked into the air cleaner 49 to be dedusted and purified is sent to the intake manifold 19 through the compressor case 107 and the exhaust gas recirculation device 96 of the turbocharger 105, and is sent to the diesel engine ( 20) is supplied to each cylinder.

In the above configuration, a part of the exhaust gas discharged from the diesel engine 20 to the exhaust manifold 83 is refluxed to each cylinder of the diesel engine 20 through the exhaust gas recirculation device 96 and the intake manifold 19. do. For this reason, the combustion temperature of the diesel engine 20 decreases, the emission of nitrogen oxides (NOx) from the diesel engine 20 is reduced, and the fuel consumption rate of the diesel engine 20 is improved.

A fuel pump 98 and a common rail 99 connected to a fuel tank (not shown) are connected to each injector 97 for four cylinders of the diesel engine 20. The common rail 99 and the fuel filter 100 are disposed on the side of the cylinder head 91 on which the intake manifold 19 is installed, and the fuel pump ( 98). In addition, each injector 97 has an electromagnetic open/close control type fuel injection valve (not shown). The common rail 99 is connected to the discharge side of the fuel pump 98, and each injector 97 of the diesel engine 20 is connected to the cylindrical common rail 99, respectively. The high-pressure fuel is temporarily stored in the common rail 99 and is supplied to the inside of each cylinder (cylinder) of the diesel engine 20 via the common rail 99.

In the above configuration, the fuel of the diesel engine 20 is pumped by the fuel pump 98 to the common rail 99 and is accumulated in the common rail 99 as high-pressure fuel. Then, by controlling the opening and closing of the fuel injection valves of each injector 97, the high-pressure fuel in the common rail 99 is injected into each cylinder of the diesel engine 20. That is, by electronically controlling the fuel injection valve of each injector 97, the injection pressure, injection timing, and injection period (injection amount) of the fuel are controlled with high precision. Accordingly, nitrogen oxides (NOx) discharged from the diesel engine 20 can be reduced.

A turbocharger 105 is disposed above the exhaust manifold 83 on the front side of the cylinder head 5. The turbocharger 105 includes a turbine case 106 with a built-in turbine wheel and a compressor case 107 with a built-in blower wheel. The exhaust gas introduction side of the turbine case 106 is connected to the exhaust manifold 83. An exhaust inlet pipe 81 of the exhaust gas purification case 50 is connected to the exhaust gas extraction side of the turbine case 106. That is, the exhaust gas discharged from each cylinder of the diesel engine 20 to the exhaust manifold 83 is discharged to the outside of the aircraft via the turbocharger 105 and the exhaust gas purification case 50 or the like.

The air supply introduction side of the compressor case 107 is connected to the air supply withdrawal side of the air cleaner 49 via an air supply pipe 108. The supply air outlet side of the compressor case 107 is connected to the intake manifold 19 via a supercharge pipe 109 and an exhaust gas recirculation device 96. That is, the fresh air that has been dedusted and purified by the air cleaner 49 is sent from the compressor case 107 to the exhaust gas recirculation device 96 through the supercharge pipe 109, and then to each cylinder of the diesel engine 20. Is supplied.

15 and 16, as an exhaust gas purifying device for purifying exhaust gas discharged from each cylinder of the diesel engine 20, an exhaust gas purifying case for removing particulate matter in exhaust gas of the diesel engine 20 ( 50) (diesel particle filter (DPF)) is provided. As shown in Fig. 15, an oxidation catalyst 111 and a soot filter 112 are installed in the exhaust gas purification case 50. The exhaust gas discharged from each cylinder of the diesel engine 20 to the exhaust manifold 83 is discharged to the outside of the aircraft via the exhaust gas purification case 50 or the like. The exhaust gas purification case 50 is configured to reduce carbon monoxide (CO), hydrocarbons (HC), particulate matters (PM), and nitrogen oxides (NOx) in the exhaust gas of the diesel engine 20.

The exhaust gas purification case 50 is configured in a horizontally long cylindrical shape extending in a direction parallel to the output shaft 20a (crankshaft) of the diesel engine 20 when viewed from the top. In the exhaust gas purifying case 50, an exhaust inlet pipe 81 for introducing exhaust gas is provided at a portion near the flywheel 94, and a portion near the cooling fan 48 in the exhaust gas purifying case 50 An exhaust outlet pipe 82 for discharging exhaust gas after the purification treatment is provided. One end of the exhaust gas purifying case 50 in the exhaust gas movement direction and the other end of the exhaust gas purification case 50 in the exhaust gas movement direction are detachably supported on the left and right side surfaces of the cylinder head 91 through the left support leg body 113 and the right support leg body 114. That is, the exhaust gas purification case 50 is attached to the upper surface side of the diesel engine 20 via the left support leg body 113 and the right support leg body 114. The exhaust gas purification case 50 is positioned above the exhaust manifold 83 in a state in the left and right direction of the diesel engine 20 facing the longitudinal direction of the cylindrical exhaust gas purification case 50.

As described above, the axial direction of the output shaft 20a of the diesel engine 20 and the movement direction of the exhaust gas inside the exhaust gas purification case 50 (the longitudinal direction of the exhaust gas purification case 50) coincide. In addition, similarly, the longitudinal direction of the air cleaner 49 coincides with the axial direction of the output shaft 20a of the diesel engine 20. And, as shown in Fig. 9, the air cleaner 49 and the exhaust gas purification case 50 extend in a shape parallel to the axial direction of the output shaft 20a of the diesel engine 20 when viewed from a plan view. It is located above. In this case, the air cleaner 49 is located below the rear upper surface 44b of the engine room cover 44 and the auxiliary cover body 44c and above the intake manifold 19. The exhaust gas purification case 50 is located below the front upper surface 44a of the engine room cover 44 and the partition plate 16 and above the exhaust manifold 83.

With this configuration, for example, the intake air introduction side of the air cleaner 49 can be easily connected to the outside air introduction part (wind tunnel case 46, etc.) disposed outside the engine room 43, while the upper side of the diesel engine 20 Effective use of the dead space allows the exhaust gas purification case 50 and the air cleaner 49 to be compactly disposed within the outer shape (in the front and rear width and in the left and right width) when viewed from the top of the diesel engine 20. In addition, when viewed from the side, the height of the air cleaner 49 and the exhaust gas purification case 50 is located on the engine compartment cover 44 so that the air cleaner 49 is on the upper side and the exhaust gas purification case 50 is on the lower side. It is shifted up and down by making it follow a staircase shape.

Above the exhaust manifold 83, a turbocharger 105 for supercharging air to the diesel engine 20 is disposed. An exhaust gas purification case 50 is disposed above the turbocharger 105. That is, the exhaust gas purifying case 50 and the turbocharger 105 are arranged vertically above the exhaust manifold 83. Further, above the intake manifold 19, an exhaust gas recirculation device 96 (EGR device) for refluxing exhaust gas to the intake system (intake manifold 19) of the diesel engine 20 is disposed. An air cleaner 49 is disposed above the exhaust gas recirculation device 96. That is, the air cleaner 49 and the exhaust gas recirculation device 96 are arranged vertically from above the intake manifold 19.

With this configuration, the exhaust gas purification case 50 and turbocharger 105 related to the exhaust system are on the side of the exhaust manifold 83, and the air cleaner 49 and the exhaust gas recirculation device 96 related to the intake system are intake air. They are arranged vertically and side by side on the manifold 19 side, respectively. Therefore, it is easy to grasp the arrangement of the exhaust system member (exhaust gas purification case 50 and turbocharger 105) and the arrangement of the intake system member (air cleaner 49 and exhaust gas recirculation device 96), and assembly workability It helps to improve or improve maintainability. In addition, the exhaust system pipe (exhaust outlet pipe 82, etc.) or the intake system pipe (air supply pipe 108, etc.) around the exhaust system member or the intake system member is easy to process in an orderly manner with the shortest possible length. Structures and the like can be manufactured at low cost.

In addition, the exhaust support plate 115 is bolted to the left support leg 113 bolted to the left side of the cylinder head 91 so as to protrude backward, while a plate-shaped outlet pipe at the rear end of the exhaust outlet pipe 82 The bracket 116 is fixed by welding. Then, the outlet pipe bracket 116 is bolted to the rear end of the exhaust support plate 115, and the outlet side of the exhaust outlet pipe 82 is accommodated in a bent portion provided at the upper edge of the outlet pipe bracket 116. That is, the exhaust outlet pipe 82 is supported through the outlet pipe bracket 116 at the rear end of the exhaust support plate 115 on the left side of the cylinder head 91.

In this configuration, since the exhaust outlet pipe 82 is connected to the left support leg 113 supporting the exhaust gas purification case 50 to the diesel engine 20, the left side for supporting the exhaust gas purification case 50 The support leg body 113 can be used as a support member of the exhaust outlet pipe 82 to integrally support the exhaust gas purification case 50 and the exhaust outlet pipe 82, thereby providing a support structure for the exhaust outlet pipe 82. It can be manufactured at low cost. It can also contribute to the improvement of the support rigidity of the exhaust outlet pipe 82.

In addition, one end (front end side) of the exhaust outlet pipe 82 is connected to the exhaust gas extraction side (exhaust outlet side) of the exhaust gas purification case 50, and the exhaust gas introduction side (exhaust gas) of the exhaust gas purification case 50 Since the other end (rear end) of the exhaust outlet pipe is connected to the left support leg 113 supporting the inlet side), the exhaust outlet pipe 82 is formed in a long length along the longitudinal direction of the exhaust gas purification case 50 This can be done, and it becomes possible to lower the temperature of the exhaust gas until it is discharged to the outside of the aircraft or to improve the noise function.

In addition to the configuration according to the above-described embodiment, as shown in FIG. 17, in the engine room 43, the heat shield plate 491 may be disposed between the air cleaner 49 and the exhaust outlet pipe 82. . That is, the air cleaner 49 is disposed above the heat shield plate 491, and the exhaust gas purification case 50 and the exhaust outlet pipe 82 are disposed below the heat shield plate 491. Accordingly, the exhaust gas purification case 50 and the exhaust outlet pipe for the air cleaner 49 can be shielded from the heat shield plate 491 from the exhaust gas purification case 50 and the exhaust outlet pipe 82. 82) can be further suppressed. The heat shield plate 491 is extended and installed in the engine room 43 from the engine room cover 44. In addition, in the embodiment of FIG. 17, one end of the heat shield plate 491 is fixed to the auxiliary cover body 440, and the front and the lower sides of the air cleaner 49 are disposed so as to cover the heat shield plate 491.

Further, in the above embodiment, the clutch operation mechanism 151 is arranged in the lower left of the cascade pulley 86, but as shown in FIG. 18, the clutch operation mechanism 151 is connected to the mowing stand 133 to travel. It does not matter if it is arrange|positioned on the base 1 side. In other words, the clutch operating mechanism 151 is fixed to the rear surface of the mowing stand 133 and disposed below the mowing input pipe 130. Then, the link mechanism 152 having one end connected to the sector gear 151 is extended upward and is provided, and the other end of the link mechanism 152 is connected to the inflow clutch 131. In the configuration of Fig. 18, the clutch operation mechanism 151 is arranged at the same height as the flywheel 94 (see Fig. 5) of the diesel engine 20, so that the clutch operation mechanism 151 is arranged from the engine room 43. It becomes difficult to be affected by

That is, in the embodiment of Fig. 18, the air heated by passing through the engine room 43 by the rotary blade 90 rotating together with the quick-moving pulley 86 flows upward, so that it is at the same height as the mowing stand 133. Heating of the located clutch operating mechanism 151 can be suppressed. As a result, excessive heating of the clutch operation mechanism 151 can be prevented, and failure of the electric motor 140 based on heating can be prevented. In addition, as shown in FIG. 18, by disposing the clutch operation mechanism 151 on the traveling body 1 side, the clutch operation mechanism 151 can be disposed away from the exhaust side of the engine room 43, so that the rotary blade 90 ) Is omitted, the number of parts can be reduced.

In addition, the configuration of each part in the present invention is not limited to the illustrated embodiment, and various changes can be made without departing from the spirit of the present invention.

1: traveling body 3: mowing device
5: threshing device 20: diesel engine
20a: output shaft 43: engine room
44: engine room cover 49: air cleaner
50: exhaust gas purification case 82: exhaust outlet pipe
84: tail pipe 113, 114: support leg body

Claims (12)

A mowing device for mowing unharvested grains of a pavement, a threshing device for threshing the harvested grains mowed with the mowing device, a traveling body equipped with the mowing device and the threshing device, and installed in the engine room on the traveling body In a combine comprising an engine and an exhaust gas purification case for treating exhaust gas of the engine,
A driver having a driving seat and a side column is disposed on an upper surface side of the engine room cover covering the engine room,
The side column is provided with a work clutch lever,
The exhaust gas purification case is disposed below the driver and protruding from a lower portion of the driver's seat to a lower portion of the side column,
A heat shield is provided below the side column and between the exhaust gas purification case,
A combine, characterized in that a lever point shaft mechanism for supporting the work clutch lever is disposed below the side column and between the heat shield body. The method of claim 1,
And a clutch operation link mechanism of the work clutch lever is disposed on the side of the heat shield and the exhaust gas purification case. The method according to claim 1 or 2,
The engine room cover has a double structure having a portion below the driver's seat and covering above and in front of the exhaust gas purification case,
A combine characterized in that the double structure part of the engine room cover communicates with the outside air intake side of the radiator, and a plurality of openings are formed in the upper and front surfaces of the double structure part. The method of claim 3,
A combine, characterized in that the radiator is disposed opposite to a cooling fan installed in one side of the engine, and a cooling wind guide plate for guiding the cooling wind passing through the radiator to the engine room is installed. The method of claim 4,
A shroud covering the exhaust side of the radiator is installed, and the cooling fan of the engine is placed in an opening formed in the shroud, and the cooling wind guide plate is fixed to both sides of the shroud and extended to the engine room side. A combine characterized in that it was made. The method of claim 5,
Further comprising an air cleaner for introducing outside air into the engine,
Arranging a new air introduction pipe from the air cleaner between the shroud and the engine,
A combine, characterized in that the cooling water pipes connecting the cooling water passage of the engine and the radiator are intersected above the new air introduction pipe and disposed. The method of claim 6,
And a threshing pulley that transmits the engine output to the threshing device is arranged on a side opposite to the radiator in the engine room, and a rotary blade is coaxially provided to the threshing pulley. The method of claim 6,
The air cleaner is disposed on the rear upper side of the exhaust gas purification case in an arrangement parallel to the exhaust gas purification case when viewed from a plan view, and an exhaust pipe connected to the exhaust side of the exhaust gas purification case is provided with the exhaust gas purification case. A combine, characterized in that the air cleaners are installed to extend in parallel. The method of claim 8,
A combine, characterized in that a heat shield plate is disposed between the air cleaner and the exhaust pipe. The method of claim 1,
An exhaust outlet pipe connected to the exhaust gas purification case and a tail pipe connected to the exhaust outlet pipe are provided, and the exhaust outlet pipe is supported by a support member detachable to the exhaust gas purification case support leg,
The tail pipe is fastened and fixed with respect to the pillar of the engine room and the threshing device so as to be adjustable in the vertical direction, and the tail pipe is disposed from the rear of the threshing device and the engine room toward the rear. A combine, characterized in that the exhaust side is turned upward. The method of claim 10,
A structure in which a driving seat is arranged above the engine room, wherein the tail pipe is fixed above the rear portion of the engine room, and an operation tool case is disposed at a position between the driving seat and the tail pipe. . The method of claim 10 or 11,
The exhaust gas purification case and the exhaust outlet pipe are disposed above the engine so as to extend in a parallel shape with the axial direction of the output shaft of the engine when viewed from a plan view,
A combine, characterized in that the inlet of the exhaust gas purification case is connected to the exhaust side of the engine at a position opposite to the cooling fan installed on one side crossing the output shaft of the engine.

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