KR20210134085A - Combine - Google Patents

Abstract

The combine in which the engine provided with an exhaust gas purification case is mounted WHEREIN: It aims at suppressing the influence of the arrangement|sequence of an engine room, when a driver's seat is installed on an engine room. The combine of this invention is the threshing apparatus 5 which thresh the harvesting|reaping apparatus 3 which mowings the non-harvesting grain stem of a field, and the harvesting grain stem mowed by the mowing apparatus 3, and the mowing apparatus 3 and the threshing apparatus 5 ), an engine 20 disposed in an engine room 43 on the traveling body 1 , and an exhaust gas purification case 50 disposed in an exhaust system of the engine 20 . . The driver's seat 10b is arrange|positioned on the upper surface side of the engine-room cover 44 which covers the engine-room 43. As shown in FIG. The engine compartment cover 44 is located below the driver's seat 10b and has a double structure with a portion covering the upper and front sides of the exhaust gas purification case 50, and openings 43d, 44e, and 44g for sucking outside air. have it

Description

Combine {COMBINE}

The present invention relates to a combine harvesting grain by threshing the harvesting grain stem with a threshing apparatus while mowing the uncultivated grain stem of the pavement with a mowing device, and more particularly, an exhaust gas purification case for purifying engine exhaust gas It relates to a combine equipped with.

The conventional combine protrudes a part of an exhaust gas purification case to the mowing device side arrange|positioned so that raising and lowering is possible in the front side of a traveling body, it makes it convenient near a mowing device, and has arrange|positioned an exhaust gas purification case (for example, patent). See document 1). Moreover, the engine room top plate part is formed in the shape in which the step was formed, and the exhaust gas purification case is arrange|positioned at the position higher than the driver's seat lower part (for example, refer patent document 2).

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

By the way, in a combine, since it is equipped with various apparatus, such as a harvesting apparatus and a threshing apparatus, an engine room is provided below the driving part in the right side of a harvesting apparatus, and an engine is mounted in the said engine room. Recently, there are many cases where the size of the engine room is limited due to the request for compactness and weight reduction of the combine (engine mounting space is often narrow). In the engine room with many restrictions, not only the engine but also various parts such as air cleaners and radiators are arranged.

Moreover, as the piping length of the exhaust system 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 the temperature of the exhaust gas passing through the exhaust gas purification case is preferably 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, a part of the exhaust gas purification case is biased toward the mowing device and slightly protrudes from the engine room for the purpose of arranging the exhaust gas purification case as close as possible to the engine. In this case, the engine itself is also arrange|positioned near a mowing device, and the attachment position of the exhaust gas purification case is ensured on the upper surface side of an engine. Then, since the exhaust gas purification 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 long, and further, there was a problem that it was difficult to compact the left and right width dimensions of the traveling body easily.

In addition, since the amount of heat from the exhaust gas purification case is affected and the cooling effect in the engine room is reduced, when the driver's seat is installed on the engine room, the effect of the heat of the engine room is given to the operator, and the operation The environment becomes unpleasant. On the other hand, since the exhaust gas temperature becomes high when an exhaust gas purification case is installed in the engine, efficient use of waste heat based on the high temperature exhaust gas is expected in work vehicles such as a combine.

This invention makes it a technical subject to provide the combine which examined these present conditions and improved.

In the invention of claim 1, the mowing device for mowing the uncultivated grain stem of the pavement, the threshing device for threshing the harvesting grain stem mowing with the mowing device, the traveling body mounted 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 driver's seat is disposed on an upper surface side of an engine room cover covering the engine room, the engine room cover comprising: A portion below the driver's seat that covers the upper side 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, a plurality of openings are formed in the upper and front surfaces of the double structure portion while communicating the double structure portion of the engine room cover to the outside air intake side of the radiator.

The invention of claim 3 is the combine according to claim 1 or 2, wherein the side column is disposed on the side of the cabin of the engine room, wherein the exhaust gas purification case is disposed to protrude below the side column, and the side column It means that the heat shield body was installed over the lower side, and the said heat shield board body was arrange|positioned at the height position used as the double structure part vicinity of the said engine room cover.

The invention of claim 4 is the combine according to claim 2, wherein the radiator is disposed opposite to a 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. that it was installed.

According to the invention of claim 5, in the combine according to claim 4, a shroud covering the exhaust wind 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 disposed in the It was fixed on both sides of the shroud and extended to the engine room side.

The invention of claim 6 is the combine according to claim 5, further comprising an air cleaner for introducing outside air into the engine, and arranging a pipe for introducing fresh air from the air cleaner between the shroud and the engine, and That is, the coolant pipes connecting the radiators were arranged to cross each other above the fresh air inlet pipe.

In the combine of Claim 6, invention of Claim 7 is a structure arrange|positioning the threshing pulley which transmits the said engine output to the said threshing apparatus on the opposite side to the said radiator in the said engine room, A rotary blade is coaxial to the said threshing pulley. that it was installed in

The invention of claim 8 is the combine according to claim 6, wherein the arrangement is parallel to the exhaust gas purification case in a plan view, and the air cleaner is disposed on the upper rear side of the exhaust gas purification case, and the exhaust gas purification case The exhaust pipe connected to the exhaust side of the exhaust gas purification case and the air cleaner are installed to extend in parallel.

The invention of Claim 9 is that, in the combine of Claim 8, the heat shield plate is arrange|positioned between the said air cleaner and the said exhaust pipe.

The invention of claim 10 is the combine according to claim 1, wherein 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 support leg is provided. Supporting the exhaust outlet pipe with a detachable support member, fastening and fixing the tail pipe in an adjustable vertical direction with respect to the engine frame and the threshing device, from between the threshing device and the engine compartment rear toward the rear In addition to disposing the tail pipe, the exhaust side of the tail pipe is directed upward.

The invention of claim 11 is the combine according to claim 10, wherein the driver's seat is arranged above the engine room, the tail pipe is fixed above the rear of the engine room, and the distance between the driver's seat and the tail pipe is It is said that the operation tool case was placed in a position where

The invention of claim 12 is the combine according to claim 10 or 11, wherein the exhaust gas purification case and the exhaust outlet pipe are arranged above the engine so as to extend in parallel to the axial direction of the output shaft of the engine when viewed from a plan view. 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 provided on one side intersecting the output shaft of the engine.

(Effects of the Invention)

According to invention of Claim 1, the mowing apparatus which mowings the uncultivated grain stem of a pavement, the threshing apparatus which thresh the harvesting grain stem mowed with the said mowing apparatus, the traveling body which mounted the said mowing apparatus and the said threshing apparatus, and the said traveling body A combine comprising an engine installed in an upper engine room and an exhaust gas purification case for processing exhaust gas of the engine, wherein a driver's seat is disposed on the upper surface side of an engine room cover covering the engine room, the engine room cover is below the driver's seat and has a double structure and has an opening for sucking outside air, so that a portion covering an upper side and a front side of the exhaust gas purification case can be suppressed from increasing the temperature of the outside of the engine compartment cover, and the driver's seat It is possible to prevent the heat in the engine room from being transmitted to an operator riding in the engine room. 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 in the left and right directions between the driver's seat and the engine can be easily reduced while on 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 on the upper surface and the front surface of the double structure part, the outside air of the radiator (cooling fan) The internal space in the double structure part of the said engine room cover can be ventilated using suction force. Therefore, it is not necessary to provide in particular a ventilation fan etc. which let air in and out of the internal space of the said engine-room cover, and can be comprised at low cost.

According to the invention of claim 3, a side column is arranged on the side of the cabin of the engine room, wherein the exhaust gas purification case is arranged to protrude to a lower side of the side column, and a heat shield body is provided under the side column, Since the heat shield 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 body against heating of the exhaust gas purification case or the like. have. In addition, it is possible to prevent exhaust from being discharged toward the operator of the driver's seat from a guide groove or the like of each lever that is opened to the operation plate body on the upper surface of the side column.

According to the invention of claim 4, the radiator is disposed opposite to a 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 installed. It becomes the structure which can supply a cooling wind efficiently into the said engine room, and improves the cooling effect in the said engine room. In particular, when the engine room is installed below the driver's seat and the engine is installed together with the exhaust gas purification case, heat retention in the engine room can be prevented, so that an operator riding on the driver's seat can be provided with the interior of the engine room. Heat transfer can be prevented.

According to the invention of claim 5, a shroud covering the exhaust wind 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, Since the installation is extended to the engine room side, the cooling air introduced into the engine room by the cooling fan is less likely to leak out 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 to the engine, a cooling water pipe for arranging a fresh air introduction pipe from the air cleaner between the shroud and the engine, and connecting the cooling water channel of the engine and the radiator is arranged to cross above the fresh air introduction tube, it is possible to suppress the temperature rise of the new introduction tube due to the heating element such as the exhaust gas purification case, and it is possible to reduce deterioration of the fresh air introduction tube. In addition, the fresh air introduction pipe and the cooling water pipe may be installed in a compact extension by forming an appropriate interval in the vertical direction.

According to invention of Claim 7, it is the structure which arrange|positions the threshing pulley which transmits the said engine output to the said threshing apparatus on the opposite side to the said radiator in the said engine room, Since the rotary blade was provided in the said threshing pulley coaxially, the said engine room It becomes to provide a rotary blade to the threshing pulley on the opposite side to the intake side in this, and the cooling air made to be sucked in from the said radiator side can pass efficiently in the said engine room.

According to the invention of claim 8, the arrangement is parallel to the exhaust gas purification case in a plan view, the air cleaner is disposed on the upper rear side of the exhaust gas purification case, and an exhaust pipe connected to the exhaust side of the exhaust gas purification case is provided extending in parallel between the exhaust gas purification case and the air cleaner, so that the air cleaner can be spaced apart from the exhaust gas purification case serving as a high-temperature heat source, and the temperature increase of the air cleaner is suppressed. can do. And, by disposing the exhaust pipe between the air cleaner and the exhaust gas purification case, the exhaust pipe functions as a heat shield 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. Therefore, it is possible to suppress the deterioration of the air cleaner by suppressing the temperature rise 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 , it is possible to further suppress the influence of the exhaust gas purification case and exhaust heat from the exhaust pipe on the air cleaner.

According to the invention of claim 10, there is provided an exhaust outlet pipe connected to the exhaust gas purification case, and a tail pipe connected to the exhaust outlet pipe, wherein the exhaust gas is exhausted using a support member detachable to the exhaust gas purification case support leg. Supporting the outlet pipe, fastening and fixing the tail pipe in an adjustable vertical direction with respect to the engine frame and the threshing device, and disposing the tail pipe toward the rear from between the threshing device and the rear of the engine room, Since the exhaust side of the tail pipe is directed upward, the exhaust gas purification case supporting leg can also be used to support the exhaust gas purification case and the exhaust outlet pipe integrally, and the exhaust gas of the exhaust gas purification case can be integrally supported. The support position of the tail pipe may be adjusted according to the position of the outlet pipe. Therefore, not only can it be comprised at low cost by commonizing the parts of an exhaust system, but also the support rigidity in the support structure of an 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 assembly workability of the exhaust outlet pipe and the tail pipe.

According to the invention of claim 11, there is a structure in which the driver's seat is disposed above the engine room, the tail pipe is fixed above the rear part of the engine room, and the operation tool case is positioned between the driver's seat and the tail pipe. Because of the arrangement, the exhaust gas, which has become hot due to the regeneration treatment, is exhausted from above the combine, so it is possible to prevent ignition of not only the straw shavings of the pavement but also the dust remaining in the apparatus. In addition, by disposing the operation tool case on the rear surface of the driver's seat, the operation tool case can function as a heat shield between the driver's seat and the tail pipe, and heat from the tail pipe is prevented from being transmitted to the operator. can

According to the invention of claim 12, the exhaust gas purification case and the exhaust outlet pipe are arranged above the engine so as to extend in parallel to the axial direction of the output shaft of the engine when viewed from a plan view, and intersect 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 provided on the side, the exhaust gas purification case and the exhaust outlet pipe are connected using the dead space on the engine upper surface side. It can be placed compactly. Further, an exhaust outlet pipe can be formed to be long in the longitudinal direction of the exhaust gas purification case, and it becomes possible to reduce the temperature of the exhaust gas until it is discharged to the outside or to improve the noise function. And, since the tail pipe can be arranged in the lateral space of the threshing apparatus, the arrangement efficiency of the exhaust gas purification case for each dead space, the exhaust outlet pipe, and the tail pipe can be improved. Further, the cooling wind from the cooling fan lowers the exhaust gas temperature after the purification treatment on the exhaust gas extraction side (exhaust outlet side) through which the exhaust gas after the purification treatment passes in the exhaust gas purification case, while lowering the exhaust gas temperature before the purification treatment. The exhaust gas introduction side (exhaust inlet side) through which the exhaust gas passes is far away from the cooling fan, and the cooling wind is difficult to reach. Therefore, the exhaust gas before a purification process is made high temperature, and the purification performance of the said exhaust gas purification case can be maintained appropriately. And the exhaust gas temperature after a purification process can be reduced and it can discharge|emit to the outside, for example, ignition of straw, etc. of a pavement can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a left side view of the combine for 4 sets mowing of this invention.
Figure 2 is a right side view of the combine.
3 is a plan view of the combine.
Fig. 4 is a perspective view of the driving unit as seen from the left front upper side.
Fig. 5 is a perspective view of the driver as seen from the rear left.
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 compartment cover;
12 is a front cross-sectional view of the engine compartment cover.
13 is an exploded perspective view of a tail pipe connecting portion;
Fig. 14 is a view showing the arrangement of the lever and the switch on the side column.
It is the perspective view which looked at the diesel engine obliquely from the right in front.
It is the perspective view which looked at the diesel engine obliquely from the left to the back.
It is a left side view of the engine room used as another structural example.
Fig. 18 is a perspective view showing an arrangement position of the clutch actuation mechanism;

EMBODIMENT OF THE INVENTION Hereinafter, embodiment which embodied the combine by this invention is described based on drawing. In addition, in the following description, toward the advancing direction of the traveling body 1, the left is simply called the left, and similarly, the right is simply called the right toward the advancing direction. The combine of embodiment is demonstrated with reference to FIGS. 1-4. 1 to 4, the traveling body 1 supported by a pair of left and right traveling crawler 2 (traveling unit) is provided. In the front part of the traveling body 1, raising/lowering adjustment is possible, and raising/lowering adjustment is attached around the harvesting rotation fulcrum shaft 4a with the hydraulic cylinder 4 for raising/lowering of a single-acting type, the harvesting apparatus 3 for four rows mowing a grain stem. has been The threshing apparatus 5 which has the feed chain 6 and the grain tank 7 which store the grain after threshing are mounted in the traveling body 1 in horizontal arrangement|sequence shape. Moreover, the threshing apparatus 5 is arrange|positioned toward the advancing direction of the traveling body 1 on the left, and the grain tank 7 is arrange|positioned at the right toward the advancing direction of the traveling body 1 (refer 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 be rotated to the body side centering on the vertical auger 8a of the discharge auger 8. As shown in FIG. The driving part 10 is formed in the right front part of the traveling body 1 from the front of the grain tank 7 . The driving unit 10 includes a step 10a on which the operator rides, a driver's seat 10b, a steering wheel column 11 in which a steering wheel 10c is installed, a main gear lever 12 or a sub gear shift lever 13 . ) or a side column 15 provided with a work clutch lever 14 or switches or the like.

As shown in FIG. 1 and FIG. 2, in the traveling body 1, the diesel engine 20 as a power source of each drive part is arrange|positioned below the driver's seat 10b. Further, the track frames 21 on the left and right 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 for holding the grounding side of the . The front side of the traveling crawler 2 is supported by the driving sprocket 22, the rear side of the traveling crawler 2 is supported by the tension roller 23, and the driving crawler 2 is supported by the track roller 24. Support the ground side.

As shown in FIGS. 1-3, in the harvesting apparatus 3, the grain stem popularity apparatus 31 for 4 sets which popularizes the uncultivated grain stem of a pavement, and the barricade type which cuts the main circle of the uncultivated grain stem of the pavement. The grain stem conveying apparatus 33 which conveys a cutting stem from the blade apparatus 32 of , and the grain stem popularity apparatus 31 to the front-end part (transmission start end side) of the feed chain 6 is provided. The uncutting grain stem of the pavement is picked by the grain stalk rolling device 31, the main circle of the uncut grain stem is cut by the cutting edge device 32, and the front end of the feed chain 6 is cut by the grain stem rolling device 31. Harvesting grain stems are returned.

In the threshing apparatus 5, the barrel 51 for threshing a grain stem, and the rocking|fluctuation sorting board 52 as a rocking|fluctuation sorting mechanism which sort|sorts the shattered material which falls below the barrel 51, and the shaking|fluctuation sorting board 52 are sorted. It is provided with the tuyere fan 53 which supplies wind, and the dust exhaust fan 61 which discharges the dust exhaustion of the rear part of the rocking|fluctuation sorting board 52 to the outside. The auger stand 125 is erected on the upper surface side of the threshing apparatus 5, and it is installed. The discharge auger 8 is supported at the upper storage position in the traveling body 1 via the auger stand 125. As shown in FIG. 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 of a storage position extends from the right rear corner part of the traveling body 1 toward the left front corner part.

As shown in FIGS. 1 and 2 , a straw discharging chain 62 is disposed on the rear end side (sending end side) of the feed chain 6 . The waste straw (stem from which grain has been detached) from the rear end side of the feed chain 6 to the straw discharge chain 62 is discharged to the rear of the traveling body 1 in a long state, or the rear side of the threshing apparatus 5 After being cut short to an appropriate length by the straw discharge cutter 63 installed in the

On the lower side of the rocking sorting board 52, the No. 1 conveyor 55 for taking out the grains (No. 1 sorted product) selected by the shaking sorting board 52, grains, straw shavings, grains, etc. A No. 2 conveyor 56 for taking out the No. 2 sorting material is installed. In addition, 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, it is installed so as to extend in the horizontal direction above the rear portion of the traveling crawler 2, have.

The rocking|fluctuation sorting board 52 is comprised so that the threshing material which fell below the barrel 51 may be rocked-sorted (gravity sorting). As for the grain (1st sorting material) which fell from the rocking|fluctuation sorting board 52, the dust in the grain is removed by the sorting wind from the tuyere fan 53, and falls on the No. 1 conveyor 55. As shown in FIG. A first grain trough 57 extending in the vertical direction at a terminal end protruding outward from one side wall (right wall in the embodiment) in the vicinity of the grain tank 7 in the threshing apparatus 5 among the conveyors 55 ) is connected. The grains withdrawn from the No. 1 conveyor 55 are brought into the grain tank 7 by the No. 1 grain conveyor (not shown) built into the 1st grain barrel 57 and are collected inside the grain tank 7 .

The shaking sorting unit 52 transfers the second sorting material such as grains with a diaper diameter (reduced re-sorting material for re-sorting mixed grains and straw shavings, etc.) to the second conveyor 56 by shaking sorting (gravity sorting). It is designed to be dropped. The second sorting material drawn out by the second conveyor 56 is returned to the upper surface side of the shaking sorting plate 52 through the second reduction cylinder 58 and the second processing unit 59 to be re-sorted. In addition, straw shavings, dust, etc. in the granular material from the barrel 51 are directed from the rear part of the traveling body 1 toward the pavement by the selection wind from the tuyere fan 53 and the suction and exhaust action of the exhaust fan 61. is emitted

Next, the mounting structure of the diesel engine 20 is demonstrated with reference to FIGS. 4-9. As shown in FIGS. 6-8, the diesel engine 20 is anti-vibration support through the engine bed 41 on the lower side of the driver's seat 10b in the traveling body 1. As shown in FIG. The driving force of the diesel engine 20 is transmitted to each part, such as the transmission case 42 for traveling drive of the track frame 21 front part, the threshing apparatus 5, and the like via a pulley belt transmission system. The front side and the upper surface side of the diesel engine 20 are covered with the engine compartment cover 44 . Moreover, the partition plate body 16 which is an insulating board is spanned below the side column 15, and the partition plate body 16 is covering a part of the upper surface side of the diesel engine 20 with the partition plate body 16. As shown in FIG. The front side of the engine compartment 43 is formed by the engine compartment cover 44 , and the upper surface side of the engine compartment 43 is formed by the engine compartment cover 44 and the partition plate body 16 .

Moreover, as shown in FIG. 8, the box-shaped wind tunnel case 46 is erected and provided in the right end of the driving|operation part 10 in the traveling body 1 via the opening-and-closing fulcrum shaft 45. As shown in FIG. The radiator 47 for water cooling is erected and installed on the wind tunnel case 46 cabin side in 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 air) is introduced into the wind tunnel case 46 from the outside air opening 46a on the right side of the wind tunnel case 46, and through the radiator 47 from the cabin side opening 46b on the left side of the wind tunnel case 46. The cooling wind that has been damped by the 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 has been damped. In addition, a vibration damping net is provided in the aircraft outer opening 46a on the right side of the wind tunnel case 46 . The intrusion of straw, etc. into the inside of the wind tunnel case 46 and the engine room 43 is prevented by presence of a vibration damping net.

Moreover, the shroud 481 of embodiment which covers the whole ventilation range part of the radiator 47 is fixed, The cooling fan 48 is arrange|positioned in the opening formed in this shroud 481. That is, the cooling fan 48 is arrange|positioned at the left side of the radiator 47, the fan shroud 481 is arrange|positioned between the said cooling fan 48 and the radiator 47, and the cooling wind is guided. At each of the front and rear ends of the fan shroud 481, wind direction plates (cooling wind guide plates) 482 and 483 are extended toward the engine room 43 side and are provided. That is, the front 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 wind direction plate 483 is the right side on 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 made lower than the height of the rear wind direction plate 483 , and the upper end of the front wind direction plate 482 is arranged at a position lower than the lower end of the engine compartment cover 44 . On the other hand, the upper end of the rear wind direction plate 483 is substantially flush with the upper end of the opening of the fan shroud 481 (see Fig. 17). By setting the upper end of the front wind direction plate 482 to a low position, the exhaust gas purification case 50 is disposed above the front wind direction plate 482, so that the regeneration temperature in the exhaust gas purification case 50 is lowered. can suppress.

As described above, the radiator 47 is disposed opposite to the cooling fan 48 installed on one side of the diesel engine 20 , and the cooling air passing through the radiator 47 is guided to the engine room 43 . Wind guide plates 482 and 483 are provided. Thereby, the cooling effect in the engine room 43 is improved as a structure which can supply the cooling wind of the radiator 47 efficiently in the engine room 43 . In addition, the cooling wind guide plates 482 and 483 are fixed to both sides of the shroud 481 as a structure in which the shroud 481 is provided on the exhaust side of the radiator 47 . And the air supply pipe (new introduction pipe) 108 from the air cleaner 49 is arrange|positioned between the shroud 481 and the diesel engine 20. As shown in FIG. By arranging the air supply pipe 108 on the shroud 481 side, the temperature rise due to 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 has a cooling water pipe 471 that connects with the cooling water of the diesel engine 20 . The cooling water pipe 471 is connected to an opening above the radiator 47 , and the cooling water circulated in the diesel engine 20 is returned to the radiator 47 . The cooling water pipe 471 is disposed above the air supply pipe 108 so as to intersect the air supply pipe 108 connected to the air cleaner 49 . The connection side of the diesel engine 20 of the cooling water pipe 471 is disposed on the diesel engine 20 side rather than the air supply pipe 108 . That is, the cooling water pipe 471 is passed between the air supply pipe 108 , 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 by providing an appropriate interval, and the cooling water pipe 471 on the reflux side functions as a heat shield member for the air supply pipe 108 .

Further, a pair of left and right engine compartment 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 the rear plate body 72 is disposed between the left and right engine compartment posts 71 . installed across. That is, the engine compartment 43 is formed (divided) by the partition plate body 16, the engine compartment cover 44, the wind tunnel case 46, and the back plate body 72. As shown in FIG. The diesel engine 20 is arrange|positioned in the engine room 43 in the state which turned the output shaft 20a (crankshaft) of the diesel engine 20 left and right. Further, the left end of the output shaft 20a protrudes from the left side of the diesel engine 20, and the traveling drive belt 73 and the threshing drive belt 74 are connected to the left end (protruding end) of the output shaft 20a. . 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 from the output shaft 20a through the threshing drive belt 74 of the diesel engine 20 The driving force is output toward the threshing apparatus 5.

On the other hand, as shown in FIGS. 4-12, the air cleaner 49 which supplies fresh air to the diesel engine 20, and the exhaust gas purification case 50 which processes the exhaust gas of the diesel engine 20 are provided. The upper surface side of the engine compartment cover 44 is formed in multiple steps in a step shape to form a lower front upper surface 441 of the upper surface side of the engine compartment cover 44 and a higher rear upper surface 442 . 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 installing it obliquely upward from the rear end of the front upper surface 441 . A 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 compartment cover 44 and the upper end of the engine compartment post 71 on the left and right. 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 and the auxiliary cover body 442 of the engine compartment cover 44 .

A silencer box 40 is mounted on the upper surface side of the auxiliary cover body 440 . The wind tunnel case 46 is communicated with the inside of the silencer box 40 through the fresh air introduction pipe body 39 so that the air cleaner 49 is communicated with the inside of the silencer box 40 . It is comprised so that the air in the wind tunnel case 46 may be introduce|transduced into the intake manifold 19 of the diesel engine 20 via the air cleaner 49. As shown in FIG. The wind tunnel case 46 , the fresh air introduction pipe body 39 , and the silencer box 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 silencer box 40 . An engine controller or the like is incorporated in the electric box 38 .

On the other hand, the driver's seat 10b is supported on the upper surface side of the front upper surface 441 of the engine compartment cover 44 via the seat support mechanism 10d. The exhaust gas purification case 50 is arrange|positioned at the front side upper surface 441 of the engine compartment cover 44, and the lower side of the partition plate body 16. As shown in FIG. The exhaust gas purification case 50 is formed in an elongate cylindrical external shape, and is supported on the upper surface side of the diesel engine 20 . In other words, the axial direction of the output shaft 20a of the diesel engine 20 coincides with the exhaust gas movement direction inside the exhaust gas purification case 50 . 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 a 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 driver's 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 . Moreover, the auger stand 125 which supports the discharge auger 8 is arrange|positioned on the right side of the lever case 28. As shown in FIG. The auger stand 125 is being fixed to the upper front surface of the threshing apparatus 5.

By configuring in this way, the electric box 38, the lever case 28, and the auger stand 125 are arranged side by side behind the driver's seat 10b. Therefore, behind 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 riding on the driver's seat 10b. A filter regeneration operation in which the exhaust gas temperature in the exhaust gas purification case 50 is maintained at a high temperature can be smoothly performed. Further, by arranging the lever case 28 at the rear of the side column 15 , the operating tool is disposed on one side of the operator seated in the driver's seat 10b, so that the operator's operability can be improved.

By locating the exhaust gas inlet side (exhaust inlet side) of the exhaust gas purification case 50 on the lower side of the partition plate body 16, the exhaust gas purification case is located on the lower side of the front upper surface 441 of the engine compartment cover 44 . The exhaust gas withdrawal side (exhaust outlet side) of (50) is located. An exhaust inlet pipe 81 is provided on the exhaust gas inlet side of the exhaust gas purification case 50 , and an exhaust outlet pipe 82 is provided on the exhaust gas outlet 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 connected. The tail pipe 84 is extended and installed between the threshing apparatus 5 and the grain tank 7, and the exhaust outlet pipe 82 is made to communicate 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 purification case 50 through the tail pipe 84 to the outside.

Moreover, as shown in FIGS. 7-12, the engine compartment cover 44 is formed in a double structure, the left end of internal space 44a, 44c of the engine compartment cover 44 of a double structure is opened, and a wind tunnel case It communicates with the internal space 46c of (46). The engine compartment cover 44 is the upper surface of the front part upper surface 441 used as a double structure, and forms opening 44d, 44e for outside air intake in the position used as the left and right sides of the driver's seat 10b. The upper surface 441 of the front part of the engine compartment cover 44 is installed to protrude the left and right portions of the seat support mechanism 10d to form a double structure to form internal spaces 44a and 44b, and the internal spaces 44a and 44b ), openings 44d and 44e are formed on the upper surfaces of each. In addition, the openings 44d and 44e for inhaling the outside air are provided with a vibration damping net to prevent intrusion of straw scraps or the like into the internal spaces 44a and 44b. Moreover, the opening 44f formed in the right end of the internal space 44a is made to communicate with the upper opening 46d formed in the wind tunnel case 46. As shown in FIG. On the other hand, below the front part upper surface 441, the insulating plate body 445 is provided in the position where the height position becomes equal to the partition plate body 16 so that the front part upper surface 441 whole surface may be covered.

The engine room cover 44 forms the opening 44g for external air intake in the front surface of the front surface 443 used as a double structure. In addition, a vibration damping net is provided on the opening 44g for inhaling the outside air to prevent intrusion of straw chips or the like into the internal space 44c. The front surface 443 of the engine compartment cover 44 forms the internal space 44c which opened the upper part, and is communicating with each of the internal spaces 44a, 44b of the front part upper surface 441. Moreover, the opening 44h formed in the right end of the internal space 44c is made to communicate with the lower opening 46e formed in the wind tunnel case 46. As shown in FIG. On the other hand, a heat insulating plate body 445 is provided behind the front surface 443 so as to cover the entire surface of the front surface 443 . In addition, the heat insulating plate body 445 is provided in the back of the back surface 444 so that the whole surface of the back surface 444 may be covered similarly to the front surface 443 .

The wind tunnel case 46 is provided with a plurality of upper and lower ends of the outer openings 46a provided over the vibration damping net, and a shielding plate 46f covering the outer openings 46a disposed on the lower side is disposed 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 disposing a shielding plate 46f covering the aircraft outer opening 46a formed at the lower end at a position opposite to the aircraft outer opening 46b, dust entering from a gap such as the aircraft outer opening 46a is removed by the shielding plate 46f. can be prevented with In addition, 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 the 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 . From this point, the ventilation path to the engine room 43 is formed through the wind tunnel case 46 . When the in-flight opening 46b side of the wind tunnel case 46 becomes negative pressure due to the rotation of the cooling fan 48, the engine compartment cover 44 has the openings 44d and 44e of the upper surface 441 of the front part, and External air is sucked from the opening 44g of the 443 .

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

In this way, the cooling air by the outside air flows through the inner spaces 44a to 44c of the engine room cover 44 of the double structure. Therefore, by the heat insulating action of the internal space 44d of the engine compartment cover 44, the heat on the engine compartment 43 side is transferred to the driver's seat 10b and the engine compartment cover 44 on the engine compartment cover 44 upper surface side. Transmission to the step 10a on the front side can be suppressed. Moreover, by setting it as the structure which introduces outside air from the engine compartment cover 44, even if it is a structure which covers the upper side and the front of the exhaust gas purification case 50 with the engine compartment cover 44, the temperature rise outside the engine compartment cover 44 is suppressed. This can be done, and it is possible to prevent the heat in the engine room 43 from being transmitted to the operator riding on the driver's seat 10b.

The driver's seat 10b is arrange|positioned on the upper surface side of the engine-room cover 44 which covers the engine-room 43 as mentioned above. The engine compartment cover 44 is located below the driver's seat 10b and has a double structure with a portion covering the upper and front sides of the exhaust gas purification case 50, and openings 43d, 44e, and 44g for sucking outside air. have Therefore, it is possible to suppress a rise in the temperature outside the engine compartment cover 44 , and it is possible to prevent the heat in the engine compartment 43 from being transmitted to the operator riding on 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 in the left and right directions between the driver's seat 10b and the diesel engine 20 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 reduce the size of the diesel engine 20 . In addition, the filter regeneration operation in which the exhaust gas temperature 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 built inside the engine room 43 below the driver's seat 10b, and the air cleaner 49 is built inside the engine room 43 behind the driver's seat 10b. have. Therefore, the exhaust gas purification case 50 which becomes a high temperature and the air cleaner 49 which introduce|transduces outside air are made to mutually adjoin above the diesel engine 20, and can be arrange|positioned compactly. For example, both the diesel engine 20 and the air cleaner 49 can be adjacent to the cooling wind introduction part of the diesel engine 20, and external air is supplied from the cooling wind introduction part of the diesel engine 20 to the air cleaner 49. can be easily introduced.

Moreover, it is a structure in which the radiator 47 is arrange|positioned adjacent to the diesel engine 20, and the internal space of the engine room cover 44 of a double structure is made to communicate with the outside air intake side of the radiator 47. As shown in FIG. Therefore, the internal space 44a-44c of the engine compartment cover 44 can be ventilated using the external air suction force of the radiator 47 (cooling fan 48). Therefore, it is not necessary in particular to provide a ventilation fan etc. which let the air in and out of the internal spaces 44a-44c of the engine compartment cover 44, and can be comprised at low cost.

As shown in FIGS. 5-8, 12 and 13, the exhaust outlet pipe 82 is bent in L-shape toward the left-right center side of the traveling body 1, and the lower side of the partition plate body 16 (threshing) In the vicinity of the entrance to between the apparatus 5 and the grain tank 7), it is bent backward in an L-shape. That is, the exhaust outlet pipe 82 has a crank shape in planar view. Accordingly, the exhaust gas purification case 50 and the length intermediate portion of the exhaust outlet pipe 82 are adjacent to each other so as to extend in parallel to the axial direction of the output shaft 20a of the diesel engine 20 in 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 back upper side. The tail pipe 84 is bent so that the front end of the tail pipe 84 is bent downward, the middle part is extended upward, and the rear end is extended 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 addition, after bending the front to the threshing apparatus 5 side, the rear end side of the tail pipe 84 is making the back into the structure which faced the grain tank 7 side, and it is making it bend in C-shape when planarly viewed. The rear end of the tail pipe 84 has a curved shape that bypasses the upper end of the No. 1 grain tank 57 connected to the grain tank 7 .

An intermediate support bracket 185 is welded and fixed to the longitudinal intermediate portion of the crank-shaped tail pipe 84 when viewed from the side. An attachment plate 186 is welded and fixed to the left surface of the left engine compartment post 71 . The middle support bracket 185 of the tail pipe 84 is attached to the attachment plate 186 of the left engine room post 71 through an L-shaped connection bracket 187 and is bolted so that the position can be adjusted. A pair of adjustment slots 190 are formed in the attachment plate 186 of the left engine room post 71 to be vertically arranged in vertical length, and the vertical piece of the connection bracket 187 through both adjustment slots 190 and The attachment plate 186 is fixed so that the vertical position can be adjusted. Then, a pair of adjustment slots 191 are formed in the middle support bracket 185 of the tail pipe 184 in the left and right lengths, and the horizontal piece of the connection bracket 187 through both adjustment slots 191 and The middle support bracket 185 is fixed so that the left and right positions can be adjusted.

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

Since the tail pipe 84 can be fixed up and down to each of the threshing device 5 and the engine room post 71, processing errors and assembly errors of the exhaust outlet pipe 82 and the tail pipe 84 are reduced. It can be easily absorbed. Thereby, the assembly workability|operativity of the exhaust outlet pipe 82 and the tail pipe 84 can be improved. Moreover, the support structure of the tail pipe 84 can be manufactured at low cost by using the threshing apparatus 5 and the engine compartment post 71 as a support member of the tail pipe 84 also.

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

As shown in FIGS. 5-8 and FIG. 12, while supporting the exhaust inlet side of the tail pipe 84 at the height of the exhaust gas purification case 50 above diesel engine 20 and substantially the same height, the threshing apparatus 5 ) The exhaust outlet side of the tail pipe 84 is supported at a position higher than the upper surface. And it arrange|positions between the threshing apparatus 5 and the grain tank 7 so that the rear end side of the tail pipe 84 may cover the upper part of the tuyere pulley 89 which inputs diesel engine 20 driving force to the threshing apparatus 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 (winner pulley cover) 88 is sucked by the tuyere fan 53 as a selective wind.

The barrel pulley 86 connected with the barrel input shaft 85 is arrange|positioned in the front right side of the threshing apparatus 5. The quick-action pulley 86 transmits the engine 20 driving force transmitted to the winnowing fan pulley 89 to the quick-action input shaft 85 by belt interlocking with the winnowing fan pulley 89 . Moreover, the barrel input shaft 85 is connected with the rotation shaft 51a of the barrel 51 via the bevel gear mechanism 85a, and transmits the rotation drive transmitted by the barrel pulley 86 to the barrel 51. The barrel pulley 86 is arrange|positioned in the position used as between the threshing apparatus 5 and the engine room 43, and covers the front and upper side with the pulley cover plate body (barrel pulley cover) 87.

Moreover, the harvesting apparatus 3 is comprised so that vertical rotation is possible around the horizontally long harvesting input pipe 130 axially supported by the harvesting mount 133 in the front of the threshing apparatus 5. The power from the barrel-action input shaft 85 is transmittable to the harvesting input shaft 132 in the harvesting input pipe 130 via the inflow clutch 131 which transmits a fixed rotational force to the harvesting apparatus 3 . That is, by directly transmitting the power from the diesel engine 20 to the harvesting device 3 without going through the transmission case 42 , the harvesting device 3 is forcibly driven at a constant high-speed rotation speed regardless of whether the vehicle speed is fast or slow. It is possible to do

The inflow clutch 131 includes a clutch operation mechanism 151 having a sector gear 141 (refer to FIG. 17) as a rotation member rotatable about a rotation axis by driving a single electric motor 140, and a link mechanism 152 ) are related through The clutch operation mechanism 151 which makes the inflow clutch 131 act is fixed by the post frame of the front right side of the threshing apparatus 5 like the rotation point 153 of the inflow clutch 131, and is the lower left side of the quick action pulley 86. is placed on Thereby, the length of the link mechanism 152 which connects the inflow clutch 131 and the clutch operation mechanism 151 can be shortened, and it can comprise it compactly.

As for the tail pipe 84, the middle part is located in the right side of the barrel pulley 86. As shown in FIG. Moreover, the rotary blade 90 which makes the barrel input shaft 85 coaxial is provided in the barrel pulley 86 so that the tail pipe 84 may be opposed. Therefore, the air warmed in the engine compartment 43 can be exhausted to the threshing apparatus 5 side by the rotary blade 90 rotating with rotation of the barrel pulley 86. The air heated by passing through the engine room 43 by this is guided to the space enclosed by the tail pipe 84, the barrel pulley cover 87, and the threshing apparatus 5. As shown in FIG. Then, the outside air warmed by the arrangement of the tail pipe 84 is sucked by the tuyere fan 53 as a sorting wind.

Moreover, a negative pressure generate|occur|produces in the space between the threshing apparatus 5 and the tail pipe 84 by the rotary blade 90 rotating together with the barrel pulley 86. Therefore, the outside air by the side of the threshing apparatus 5 flows toward the barrel pulley 86, and the clutch operation mechanism 151 arrange|positioned under the left side of the barrel pulley 86 can be cooled. As a result, it is possible to prevent excessive heating of the clutch actuation mechanism 151 and prevent malfunction of the electric motor 140 based on the 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 parallel to the axial direction of the output shaft 20a of the diesel engine 20 when viewed from a plan view. have. Therefore, the exhaust gas purification case 50 and the exhaust outlet pipe 82 can be compactly arrange|positioned using the dead space of the diesel engine 20 upper surface side. In addition, the exhaust outlet pipe 82 can be formed to be long in 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 In addition, after arranging the exhaust gas purification case 50 and the exhaust outlet pipe 82 in the upper surface side space of the diesel engine 20, the tail pipe 84 can be arranged in the lateral space 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, when viewed from a plan view, the arrangement is parallel to the exhaust gas purification case 50 , and the air cleaner 49 is disposed on the rear upper side of the exhaust gas purification case 50 , and the exhaust side of the exhaust gas purification case 50 . An exhaust outlet pipe 82 connected to the exhaust gas purification case 50 and the air cleaner 49 extends in parallel and is provided. By arranging the air cleaner 49 apart from the exhaust gas purification case 50 serving as a high-temperature heat source, and arranging the exhaust outlet pipe 82 between the air cleaner 49 and the exhaust gas purification case 50 . The influence on the air cleaner 49 by the arrangement of the exhaust gas purification case 50 can be reduced.

As shown in FIG. 8, it is the lower side of the side column 15, and the lever fulcrum shaft mechanism 17 which supports the work clutch lever 14 etc. is arrange|positioned at the upper side of the partition plate body 16. As shown in FIG. In the left side of the partition plate body 16 and the exhaust gas purification case 50, a clutch operation link mechanism 18 for tensioning or relaxing the threshing drive belt 74 or the like in conjunction with operation of the work clutch lever 14 or the like is provided. are placing A side column cover 15a that covers the left side of the lever fulcrum 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 . A clutch operation link mechanism 18 is positioned 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 protrudes to the lower side of the side column 15 and is arrange|positioned, and the partition plate body (heat-shielding plate body) 16 is provided below the side column 15. And the partition plate body 16 is arrange|positioned at the height position used as the double structure part vicinity of the engine compartment cover 44. As shown in FIG. Therefore, with respect to the heating of the exhaust gas purification case 50 etc., the wire or harness on the side of the side column 15 can be easily protected by the partition plate body 16 which is a heat shield plate. Moreover, exhaust from the guide groove of each lever 12-14 opened in the operation plate body of the upper surface of the side column 15, etc. toward the operator of the driver's seat 10b can be prevented.

In the side column 50, as shown in FIG. 14, the main gear lever 12 and the sub gear lever 13 are arranged in the right front position of the driver's seat 10b, left and right, and the sub gear lever 13 is arranged. ), the aircraft posture control lever 161 for setting the left and right or front and rear inclination angles of the traveling body 1 is disposed. That is, in front of the side column 50 and close to the steering handle 10c, the main gear lever 12, the auxiliary gear shift lever 13, and the aircraft attitude control lever 161, which are the operation levers of the travel system, are put together. are placing In addition, the side column 50 is provided with the liquid crystal display 162 in the front position rather than the main gear lever 12, and the running state and operation state of the combine which is a work machine are displayed on the liquid crystal display 162.

The side column 15 has arrange|positioned the work clutch lever 14 in the position used as the back of the main gear lever 12, as shown in FIG. The work clutch lever 14 serves both as one lever for power step operation of the mowing device 3 and a lever for power step operation of the threshing device 5, and a guide groove formed in the upper surface of the side column 15 It is configured to be tiltable in the front-rear direction. When the work clutch lever 14 is positioned at the rear end of the guide groove, the power to both the harvesting device 3 and the threshing device 5 is cut. And, when the work clutch lever 14 is positioned in the middle of the guide groove, power is transmitted only to the threshing apparatus 5, and when the work clutch lever 14 is positioned at the front end of the guide groove, the mowing apparatus 3 and the threshing apparatus 5 ) to transmit power to both sides.

As shown in Fig. 14, the side column 15 has an accelerator dial 163, a forward rotation control switch 164 and a regeneration switch ( 165) are placed. The accelerator dial 163 is for controlling and operating the rotation speed of the diesel engine 20 . The forward rotation control switch 164 is for operating ON/OFF of forward rotation control for maintaining the rotation speed of the diesel engine 20 constant. 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 so that the operator can use it easily.

The accelerator dial 163 is capable of manually adjusting the engine speed, and is used to maintain a constant speed of the engine 20 during operation. Since the performance of threshing deteriorates when the rotational speed of the engine 20 is changed during operation, it is preferable to always maintain it during operation, and the operation is performed while maintaining the rotational speed with the accelerator dial 163. . Moreover, even if the load of the threshing apparatus 5 fluctuates, the forward rotation control switch 164 maintains the rotation of the diesel engine 20 constant, and performs ON/OFF of the eco-mode to always perform stable threshing and sorting.

The regeneration switch 165 is constituted by a switch with a regeneration lamp, and by blinking the regeneration lamp, it notifies the operator that the clogging state of the exhaust gas purification device (exhaust gas purification case) 50 exceeds the 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 regeneration of the exhaust gas purification apparatus 50 is being performed, the regeneration switch 165 lights the regeneration lamp to notify the operator that regeneration of the exhaust gas purification apparatus 50 is being performed.

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 surface) of the cylinder head 91 of the diesel engine 20 . The cylinder head 91 is mounted on the cylinder block 92 in which the output shaft 20a and the piston (not shown) were 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 dividedly arrange|positioned at the both sides which pinched|interposed the output shaft 20a. The output shaft 20a projects outwardly from the left and right side surfaces of the cylinder block 92 .

As shown in FIGS. 15 and 16 , the flywheel housing 93 is fixed to the left surface of the cylinder block 92 . 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 axially supported the flywheel 94. 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 (refer to 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) intersecting the output shaft 20a, and one side intersecting the output shaft 20a and the opposite side A flywheel 94 is disposed on the other side (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 air from the cooling fan 48 hits the exhaust gas outlet side (exhaust outlet side) through which the exhaust gas after purification in the exhaust gas purification case 50 passes, and the temperature of the exhaust gas after the purification process is lowered. lower it 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, and the cooling wind hardly hits it. Therefore, the exhaust gas before a purification process is made high temperature, and the purification performance of the exhaust gas purification case 50 can be maintained appropriately. And the exhaust gas temperature after a purification process can be reduced and it can discharge|emit to the outside, for example, ignition of straw, etc. of a pavement 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 through the compressor case 107 and the exhaust gas recirculation device 96 of the turbocharger 105, which will be described later. The fresh air (external air) suctioned by the air cleaner 49, which has been 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 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 returned 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 falls, the discharge amount of nitrogen oxide (NOx) from the diesel engine 20 reduces, and the fuel consumption rate of the diesel engine 20 improves.

A fuel pump 98 connected to a fuel tank (not shown) and a common rail 99 are connected to each injector 97 for four cylinders of the diesel engine 20 . A common rail 99 and a fuel filter 100 are disposed on the intake manifold 19 mounting side of the cylinder head 91, and a fuel pump ( 98) is placed. In addition, each injector 97 has an electromagnetic opening/closing 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 into 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 to the common rail 99 by the fuel pump 98 and accumulated in the common rail 99 as high-pressure fuel. And the high-pressure fuel in the common rail 99 is injected to each cylinder of the diesel engine 20 by opening and closing the fuel injection valve of each injector 97, respectively. That is, by electronically controlling the fuel injection valve of each injector 97, the injection pressure of fuel, injection timing, and injection period (injection amount) 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 in the front side of the cylinder head 5 . The turbocharger 105 is equipped with the turbine case 106 with a built-in turbine wheel, and the 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 .

The air supply inlet side of the compressor case 107 is connected to the air supply outlet side of the air cleaner 49 via the air supply pipe 108 . The air supply outlet side of the compressor case 107 is connected to the intake manifold 19 via the supercharge pipe 109 and the exhaust gas recirculation device 96 . That is, the new 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 supercharging pipe 109, and then to each cylinder of the diesel engine 20. is supplied

15 and 16, as an exhaust gas purification device for purifying exhaust gas discharged from each cylinder of the diesel engine 20, an exhaust gas purification case for removing particulate matter in the exhaust gas of the diesel engine 20 ( 50) (diesel particulate filter (DPF)). As shown in FIG. 15 , the oxidation catalyst 111 and the soot filter 112 are built 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 through the exhaust gas purification case 50 or the like. By the exhaust gas purification case 50, it is comprised so that carbon monoxide (CO), hydrocarbon (HC), particulate matter (PM), and nitrogen oxides (NOx) in the exhaust gas of the diesel engine 20 may be reduced.

The exhaust gas purification case 50 is comprised in the transversely elongate cylindrical shape extended long in the direction parallel to the output shaft 20a (crankshaft) of the diesel engine 20 when planarly viewed. In the exhaust gas purification case 50, an exhaust inlet pipe 81 for introducing exhaust gas is provided in a portion near the flywheel 94, and in the exhaust gas purification case 50, a portion near the cooling fan 48 An exhaust outlet pipe 82 for discharging exhaust gas after the purification treatment is provided. One end 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 via a left support leg 113 and a right support leg 114 . That is, the exhaust gas purification case 50 is attached to the upper surface side of the diesel engine 20 via the left supporting leg 113 and the right supporting leg 114 . The exhaust gas purification case 50 is positioned above the exhaust manifold 83 in a state in which the cylindrical exhaust gas purification case 50 faces in the longitudinal direction in the left and right direction of the diesel engine 20 .

As described above, the axial direction of the output shaft 20a of the diesel engine 20 coincides with the exhaust gas movement direction inside the exhaust gas purification case 50 (the longitudinal direction of the exhaust gas purification case 50 ). Moreover, the longitudinal direction of the air cleaner 49 also coincides with the axial direction of the output shaft 20a of the diesel engine 20 similarly. 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 in a plan view of the diesel engine 20. It is located above. In this case, the air cleaner 49 is located below the rear upper surface 44b of the engine compartment 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 compartment cover 44 and the partition plate body 16 and above the exhaust manifold 83 .

If comprised in this way, for example, the intake air intake side of the air cleaner 49 can be easily connected to the outside air introduction part (wind tunnel case 46 etc.) arrange|positioned outside the engine room 43, and the diesel engine 20 upper part By effectively utilizing the dead space, the exhaust gas purification case 50 and the air cleaner 49 can be compactly arranged in the outer shape (in the front-rear width and in the left-right width) when viewed from the plane 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 of the engine room 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 to follow the shape of the stairs.

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 purification case 50 and the turbocharger 105 are arranged vertically above the exhaust manifold 83 . In addition, above the intake manifold 19 , an exhaust gas recirculation device 96 (EGR device) for refluxing exhaust gas to an 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 above the intake manifold 19 .

When configured in this way, the exhaust gas purification case 50 and the turbocharger 105 associated with the exhaust system are on the exhaust manifold 83 side, and the air cleaner 49 and the exhaust gas recirculation device 96 associated with the intake system are intake air. On the manifold 19 side, they are arranged side by side, respectively, up and down. Therefore, it is easy to grasp the arrangement of the exhaust system members (the exhaust gas purification case 50 and the turbocharger 105) and the arrangement of the intake system members (the air cleaner 49 and the exhaust gas recirculation device 96), and assembly workability is improved. It helps to improve or improve maintainability. In addition, it is easy to arrange the exhaust system piping (exhaust outlet pipe 82, etc.) and intake system piping (supply pipe 108, etc.) around the exhaust system member or the intake system member to the shortest possible length and orderly, and the piping of the intake/exhaust system The structure and the like can be manufactured at low cost.

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

With this configuration, since the exhaust outlet pipe 82 is connected to the left support leg 113 for supporting the exhaust gas purification case 50 on the diesel engine 20, the left side for supporting the exhaust gas purification case 50 By using the support leg 113 as a supporting member of the exhaust outlet pipe 82 , the exhaust gas purification case 50 and the exhaust outlet pipe 82 can be integrally supported, so that the support structure of the exhaust outlet pipe 82 is formed. It can be manufactured at low cost. It can also contribute to the improvement of the support rigidity of the exhaust outlet pipe|tube 82.

In addition, one end (front end side) of the exhaust outlet pipe 82 is connected to the exhaust gas outlet side (exhaust outlet side) of the exhaust gas purification case 50 , and the exhaust gas introduction side (exhaust gas outlet side) of the exhaust gas purification case 50 is connected. Since the other end (rear end side) of the exhaust outlet pipe is connected to the left supporting leg 113 supporting the inlet side), the exhaust outlet pipe 82 is formed to be long in the longitudinal direction of the exhaust gas purification case 50 . This can be done, and it becomes possible to reduce the temperature of the exhaust gas until it is discharged to the outside, 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 is 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 ( 82) can be further suppressed. The heat shield plate 491 is provided extending from the engine compartment cover 44 in the engine compartment 43 . 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 lower sides of the air cleaner 49 are disposed so as to be covered with the heat shield plate 491 .

In addition, in the said embodiment, although it was set as the structure which arrange|positioned the clutch actuation mechanism 151 to the lower left side of the barrel pulley 86, as shown in FIG. It does not matter as what is arrange|positioned at the base|substrate 1 side. That is, the clutch operation mechanism 151 is fixed to the back surface of the harvesting mount 133, and it arrange|positions below the harvesting|reaping input pipe 130. Then, a link mechanism 152 having one end connected to the sector gear 151 is extended and installed, 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 from the engine room 43 by arranging the clutch operation mechanism 151 at a position equivalent to the flywheel 94 (see FIG. 5 ) of the diesel engine 20 . difficult to be affected by

That is, in the embodiment of Fig. 18, the air heated through the engine room 43 by the rotary blade 90 rotating together with the barrel pulley 86 flows upward, so at the same height as the mowing mount 133. Heating of the positioned clutch actuation mechanism 151 can be suppressed. As a result, it is possible to prevent excessive heating of the clutch actuation mechanism 151 and prevent malfunction of the electric motor 140 based on the heating. Moreover, since the clutch actuation mechanism 151 can be spaced apart from the exhaust side of the engine room 43 and the clutch actuation mechanism 151 can be arrange|positioned by arrange|positioning the clutch actuation mechanism 151 on the traveling body 1 side like FIG. 18, the rotary blade 90 ), the number of parts can be reduced.

In addition, the structure of each part in this invention is not limited to the illustrated embodiment, Various changes are possible in the range which does not deviate from the meaning of this invention.

1: traveling body 3: mowing device
5: thresher 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 (3)

A mowing device for mowing the uncultivated grain stem of the pavement, a threshing device for threshing the harvesting grain stem mowed by the mowing device, a traveling body mounted with the mowing device and the threshing device, and installed in an engine room on the traveling body In a combine comprising an engine and an exhaust gas purification case for treating the exhaust gas of the engine,
A driving unit having a side column is disposed on the upper surface side of the engine room cover covering the engine room,
The exhaust gas purification case is disposed below the side column,
The exhaust gas purification case is connected to a support leg formed on the side of the engine,
The exhaust outlet of the tail pipe which communicates with the exhaust gas outlet of the said exhaust gas purification case is arrange|positioned at the position higher than the upper surface of the said threshing apparatus, The combine characterized by the above-mentioned. The method of claim 1,
A partition plate body is provided below the side column and between the exhaust gas purification case and the exhaust gas is introduced into the exhaust gas purification case on the lower side of the partition plate body and below the exhaust gas purification case Combine characterized in that the exhaust inlet pipe is positioned. 3. The method of claim 2,
Combine, characterized in that the side column cover is formed on the lower left side of the side column.

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