KR102608486B1 - Combine - Google Patents

Abstract

In a combine equipped with an engine provided with an exhaust gas purification case, the purpose is to suppress the influence of the arrangement of the engine room when a driver's seat is installed on the engine room. The combine of the present invention includes a reaping device (3) for reaping the unharvested grain stems of the packaging, a threshing device (5) for threshing the reaped grain stems harvested with the reaping device (3), a reaping device (3), and a threshing device (5) ) is provided with a traveling body 1 mounted thereon, an engine 20 placed in the engine room 43 on the traveling body 1, and an exhaust gas purification case 50 placed in the exhaust system of the engine 20. . The driver's seat 10b is disposed on the upper surface side of the engine room cover 44 that covers the engine room 43. In addition, the engine room 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 has openings 43d, 44e, and 44g for sucking in outside air. I have it.

Description

Combine {COMBINE}

The present invention relates to a combine that harvests grains by threshing the harvested grain stems with a threshing device while harvesting the unharvested grain stems of the field with a harvesting device, and more specifically, to an exhaust gas purification case for purifying and processing the exhaust gas of an engine. It is about a combine equipped with .

In a conventional combine, a part of the exhaust gas purification case is protruded on the side of the harvesting device that is placed on the front side of the traveling body so that it can be raised and lowered, and the exhaust gas purification case is arranged conveniently near the harvesting device (for example, patent (see Document 1). Additionally, the engine room top plate portion 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 Publication No. 2013-1 Japanese Patent Publication No. 2013-2

However, since the combine is equipped with various devices such as a reaping device and a threshing device, an engine room is formed below the operating unit on the right side of the reaping device, and an engine is mounted in the engine room. Recently, due to requests for more compact and lighter combines, there are often restrictions on the size of the engine room (the engine mounting space is often limited). In the engine room, which has many restrictions, not only the engine but also various parts such as air cleaners and radiators are placed.

Additionally, as the piping length of the exhaust system from the engine to the exhaust gas purification case becomes longer, 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 higher than a predetermined temperature, there is a request to place the exhaust gas purification case as close to the engine as possible.

Based on these points, in the above-described prior art, for the purpose of arranging the exhaust gas purification case as close to the engine as possible, a part of the exhaust gas purification case is placed near the harvesting device and slightly protrudes from the engine room. In this case, the engine itself is also placed near the harvesting device, and the attachment position of the exhaust gas purification case is secured on the upper surface of the engine. In that case, the exhaust gas purification case and part of the engine protrude from the engine room, so 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 running body.

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 in the engine room, the influence of the engine room arrangement is given to the operator, and its control is given to the operator. The environment becomes unpleasant. On the other hand, when an exhaust gas purification case is installed in an engine, the exhaust gas temperature becomes high, so efficient use of waste heat based on the high temperature exhaust gas is expected in work vehicles such as combines.

The technical task of the present invention is to provide a combine in which improvements have been made by examining these current conditions.

The invention of claim 1 includes a reaping device for reaping unharvested grain stalks in a field, a threshing device for threshing the reaped grain stalks harvested by the reaping device, a traveling machine equipped with the reaping device and the threshing device, and a device on the traveling machine. In a combine provided with an engine installed in an engine room and an exhaust gas purification case for processing exhaust gases of the engine, a driver's seat is disposed on the upper surface side of an engine room cover that covers the engine room, and the engine room cover includes The part below the driver's seat and covering the top and front of the exhaust gas purification case has a double structure and has an opening for sucking in outside air.

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

The invention of claim 3 is the combine according to claim 1 or 2, wherein a side column is disposed on the interior side of the engine room, wherein the exhaust gas purification case is disposed so as to protrude below the side column, and the side column A heat insulating plate body is installed across the lower part, and the heat insulating plate body is placed at a height near the double structure portion of the 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 cooling wind passing through the radiator into the engine room. It means it was installed.

The invention of claim 5 is the combine according to claim 4, wherein a shroud covering an 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 installed in the combine. It was installed by fixing it to both sides of the shroud and extending it toward the engine room.

The invention of claim 6 is the combine according to claim 5, further comprising an air cleaner for introducing outside air into the engine, a fresh air introduction pipe from the air cleaner is disposed between the shroud and the engine, and a cooling water passage of the engine. The coolant pipes connecting the radiator are arranged to cross above the new air introduction pipe.

The invention of claim 7 is the combine of claim 6, wherein the threshing pulley that transmits the engine output to the threshing device is disposed on the opposite side of the radiator in the engine room, and the rotary blade is coaxial with the threshing pulley. It is said 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 when viewed from the top, the air cleaner is disposed on a rear upper side of the exhaust gas purification case, and the exhaust gas purification case is disposed in the combine. The exhaust pipe connected to the exhaust side of is installed to extend in parallel between the exhaust gas purification case and the air cleaner.

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 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, and the exhaust gas purification case support leg body is provided. The exhaust outlet pipe is supported by a detachable support member, the tail pipe is adjustably fastened to the engine frame and the threshing device in the vertical direction, and the tail pipe is adjusted and fixed to the engine frame and the threshing device toward the rear from between the threshing device and the rear of the engine room. In addition to arranging the tail pipe, the exhaust side of the tail pipe was raised upward.

The invention of claim 11 is a structure in which a driver's seat is arranged above the engine room in the combine according to claim 10, wherein the tail pipe is fixed to the upper part of the rear part of the engine room, and the space between the driver's seat and the tail pipe is provided. The control case was placed in the desired position.

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 parallel to 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.

According to the invention of claim 1, a reaping device for reaping unharvested grain stalks in the field, a threshing device for threshing the reaped grain stalks harvested by the reaping device, a traveling machine equipped with the reaping device and the threshing device, and the traveling machine In a combine provided with an engine installed in an upper engine room and an exhaust gas purification case for processing exhaust gas of the engine, a driver's seat is disposed on the upper surface side of an engine room cover that covers the engine room, and the engine room cover is provided. is below the driver's seat and has a double-layer structure for the part covering the upper and front sides of the exhaust gas purification case and has an opening for sucking in outside air, so that a temperature rise outside the engine room cover can be suppressed, and the driver's seat It is possible to prevent heat in the engine room from being transmitted to the operator riding on it. 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 of the driver's seat and the engine can be easily reduced, and the upper surface of the engine can be easily reduced. The exhaust gas purification case can be installed compactly. In addition, a filter regeneration operation, etc. in which the temperature of the exhaust gas in the exhaust gas purification case is maintained at a high temperature can be smoothly performed.

According to the invention of claim 2, the double structure part of the engine room cover is communicated with the outside air intake side of the radiator and a plurality of openings are formed on the upper and front surfaces of the double structure part, so that the outside air of the radiator (cooling fan) is connected. The suction force can be used to ventilate the internal space in the double-layered structure of the engine room cover. Therefore, there is no need to specially install a ventilation fan or the like for blowing air in and out of the inner space of the engine room cover, so it can be constructed at low cost.

According to the invention of claim 3, there is a structure in which a side column is arranged on the inside side of the engine room, wherein the exhaust gas purification case is disposed so as to protrude below the side column, and a heat shield plate body is installed below the side column, Since the heat shield plate body is placed at a height near the double-layer structure of the engine room cover, the wire or harness on the side column side can be easily protected against heating of the exhaust gas purification case, etc. with the heat shield plate body. there is. In addition, it is possible to prevent exhaust air from being discharged toward the operator of the driver's seat from the guide groove of each lever opened in the operation panel 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 is installed to guide the cooling wind passing through the radiator to the engine room, so that the It is configured to efficiently supply cooling wind into the engine room, and improves the cooling effect within the 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 storage in the engine room can be prevented, so that the operator riding in the driver's seat is protected from heat in the engine room. 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 placed in the opening formed in the shroud, and the cooling wind guide plate is fixed to both sides of the shroud. Since it is installed extended to the engine room side, the cooling wind introduced into the engine room by the cooling fan becomes difficult to leak to the outside of the engine room, thereby improving the cooling effect of the engine.

According to the invention of claim 6, there is further provided an air cleaner for introducing outside air into the engine, a fresh air introduction pipe from the air cleaner is disposed between the shroud and the engine, and a coolant pipe connects the coolant passage of the engine with the radiator. Since the are arranged crosswise above the fresh air introduction pipe, a temperature rise of the new air introduction pipe caused by a heating element such as an exhaust gas purification case can be suppressed, and deterioration of the new air introduction pipe can be reduced. In addition, the new air introduction pipe and the coolant pipe can be compactly extended and installed at appropriate intervals up and down.

According to the invention of claim 7, the threshing pulley that transmits the engine output to the threshing device is arranged on the opposite side of the radiator in the engine room, and the threshing pulley is provided with a rotating blade on the same axis, so that the engine room By installing a rotating blade on the threshing pulley on the side opposite to the intake side in , the cooling air sucked in from the radiator side can be efficiently passed within the engine room.

According to the invention of claim 8, the arrangement is parallel to the exhaust gas purification case when viewed from the top, the air cleaner is disposed on a rear upper side of the exhaust gas purification case, and an exhaust pipe is connected to the exhaust side of the exhaust gas purification case. Since the air cleaner is installed to extend in parallel between the exhaust gas purification case and the air cleaner, the air cleaner can be placed away from the exhaust gas purification case, which is a high-temperature heat source, and the temperature of the air cleaner can be 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 shield for the exhaust gas purification case, thereby reducing the influence on the air cleaner due to the arrangement of the exhaust gas purification case. can do. Therefore, it is possible to suppress the temperature rise of the air cleaner due to heating of the engine, the exhaust gas purification case, etc., thereby suppressing deterioration of the air cleaner.

According to the invention of claim 9, since a heat insulating plate is disposed between the air cleaner and the exhaust pipe, the air cleaner is disposed above the heat insulating plate, and the exhaust gas purification case and the exhaust pipe are disposed below the heat insulating plate. Since the configuration is such that the influence of the exhaust gas purification case and the exhaust pipe on the air cleaner can be further suppressed.

According to the invention of claim 10, there is provided 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, wherein the exhaust gas purification case is provided with a support member detachable from the support leg. Supporting the outlet pipe, fastening and fixing the tail pipe to the engine frame and the threshing device so as to be adjustable in the vertical direction, 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 raised 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 gas purification case can be supported by the exhaust outlet pipe. The support position of the tail pipe can be adjusted according to the position of the outlet pipe. Accordingly, not only can the parts of the exhaust system be common and be constructed at low cost, but also the support rigidity of the support structure of the exhaust system can be improved. In addition, processing errors and assembly errors of the exhaust outlet pipe and the tail pipe can be easily absorbed, and assembly workability of the exhaust outlet pipe and the tail pipe can be improved.

According to the invention of claim 11, there is a structure in which a driver's seat is arranged above the engine room, the tail pipe is fixed to the upper part of the rear part of the engine room, and an operating tool case is provided at a position between the driver's seat and the tail pipe. Because of the arrangement, exhaust gases that have become high temperature due to regeneration treatment are discharged from the top of the combine, preventing ignition of not only straw debris from the packaging but also dust remaining in the device. In addition, by arranging the control case on the back of the driver's seat, the control case can function as a heat shield between the driver's seat and the tail pipe, and prevent heat from the tail pipe from being transmitted to the operator. You 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 parallel with the axis of the output shaft of the engine when viewed from a plane, 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 installed on the side, the exhaust gas purification case and the exhaust outlet pipe are connected using the dead space on the upper surface of the engine. It can be placed compactly. Additionally, the exhaust outlet pipe can be formed in a long length along the longitudinal direction of the exhaust gas purification case, making it possible to reduce the temperature of the exhaust gas until it is discharged to the outside or improve the noise function. And, because the tail pipe can be placed in the lateral space of the threshing device, the arrangement efficiency of the exhaust gas purification case, the exhaust outlet pipe, and the tail pipe for each dead space can be improved. In addition, the cooling wind from the cooling fan reduces the temperature of the exhaust gas after the purification treatment on the exhaust gas outlet side (exhaust outlet side) through which the exhaust gas after the purification treatment passes in the exhaust gas purification case, while reducing the temperature of the exhaust gas before the purification treatment. The exhaust gas introduction side (exhaust inlet side) through which the exhaust gas passes is far from the cooling fan, making it difficult for cooling wind to reach it. Therefore, the exhaust gas before the purification process can be kept at a high temperature, so that the purification performance of the exhaust gas purification case can be maintained appropriately. Additionally, the temperature of the exhaust gas after the purification treatment can be lowered and discharged to the outside, preventing ignition of, for example, packaging straw scraps.

Figure 1 is a left side view of the 4-row harvesting combine of the present invention.
Figure 2 is a right side view of the combine.
Figure 3 is a top view of the combine.
Figure 4 is a perspective view of the driver's section viewed from above on the left front.
Figure 5 is a perspective view of the operating unit viewed from the left rear.
Figure 6 is a left side view of the operating unit.
Figure 7 is a left side view of the engine room.
Figure 8 is a front view of the engine room.
Figure 9 is a plan view of the engine room.
Figure 10 is a plan cross-sectional view of the engine room cover.
Figure 11 is a cross-sectional perspective view of the engine room cover.
Figure 12 is a front cross-sectional view of the engine room cover.
Figure 13 is an exploded perspective view of the tail pipe connection portion.
Figure 14 is a diagram showing the arrangement of levers and switches on the side column.
Figure 15 is a perspective view of the diesel engine viewed from the front and diagonally from the right.
Figure 16 is a perspective view of the diesel engine viewed from the left diagonally toward the back.
Figure 17 is a left side view of an engine room as a separate configuration example.
Figure 18 is a perspective view showing the arrangement position of the clutch operating mechanism.

Hereinafter, an embodiment embodying the combine according to the present invention will be described based on the drawings. In addition, in the following description, the left side toward the forward direction of the traveling body 1 is simply referred to as the left side, and similarly, the right side toward the forward direction is simply referred to as the right side. The combine of embodiment is explained with reference to FIGS. 1-4. As shown in Figs. 1 to 4, it is provided with a traveling body 1 supported by a pair of left and right traveling crawlers 2 (traveling parts). At the front of the traveling body 1, a four-barrel harvesting device 3 for harvesting grain stalks is mounted so as to be adjustable in elevation and lowering around the harvesting pivot axis 4a by means of a single-acting lifting hydraulic cylinder 4. It is done. On the traveling body 1, a threshing device 5 having a feed chain 6 and a grain tank 7 for storing threshed grain are mounted in a horizontal arrangement. Moreover, the threshing apparatus 5 is arrange|positioned on the left side toward the advancing direction of the traveling body 1, and the grain tank 7 is arrange|positioned on the right side toward the advancing direction of the traveling body 1 (refer FIG. 3).

A discharge auger 8 is disposed from the rear of the grain tank 7 upwards to discharge the grains in the grain tank 7 to the outside of the aircraft. It is configured so that the front part of the grain tank 8 can be rotated to the side of the body with the vertical auger 8a of the discharge auger 8 as the center. An operating unit 10 is formed on the right front part of the traveling body 1 in front of the grain tank 7. The driving unit 10 includes a step 10a on which the operator rides, a driver seat 10b, a steering column 11 on which the steering wheel 10c is installed, and a main gear shift lever 12 or auxiliary shift lever 13. ) or a side column 15 equipped with a work clutch lever 14 or switches, etc. is disposed.

1 and 2, in the traveling body 1, a diesel engine 20 as a power source for each driving unit is disposed below the driver's seat 10b. Additionally, left and right track frames 21 are disposed on the lower surface of the traveling body 1. The track frame 21 includes a driving 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 keep the ground side of the ground in a grounded state. The front side of the traveling crawler (2) is supported by the drive sprocket (22), the rear side of the traveling crawler (2) is supported by the tension roller (23), and the traveling crawler (2) is supported by the track roller (24). Support the ground side.

As shown in FIGS. 1 to 3, the harvesting device 3 includes a 4 trillion grain harvesting device 31 for cutting the unharvested grain stems in the field, and a bariccan type cutting device for cutting the main circle of the unharvested grain stems in the field. A harvesting blade device 32 and a grain stem conveying device 33 for transporting the harvested grain stems from the grain harvesting device 31 to the front end (dispatch start side) of the feed chain 6 are provided. The unharvested grain stem of the package is cut by the grain stem cutting device 31, the main circumference of the unharvested grain stem is cut by the cutting blade device 32, and the grain stem cutting device 31 cuts it to the front end of the feed chain 6. The harvested grain culm is returned.

The threshing device 5 includes a barrel 51 for threshing the grain stem, a oscillating sorting panel 52 as a oscillating sorting mechanism for sorting out the threshing material falling downward of the barrel 51, and a oscillating sorting panel 52 for sorting. It is provided with a winnowing fan 53 that supplies air, and an exhaust fan 61 that discharges exhaust gas from the rear portion of the oscillation sorting panel 52 to the outside of the machine. 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 a storage position above the traveling body 1 via the auger stand 125. The discharge auger 8 is supported in an approximately horizontal position by the auger stand 125. As shown in Fig. 3, the discharge auger 8 in 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 at the rear end side (discharge end side) of the feed chain 6. The waste straw (stems from which grains have been separated) received from the rear end side of the feed chain 6 to the straw discharge chain 62 is discharged in a long state to the rear of the traveling body 1 or to the rear side of the threshing device 5. It is cut short to an appropriate length by the straw discharge cutter 63 installed in and then discharged to the rear lower side of the traveling body (1).

On the lower side of the oscillating sorting panel 52, there is a No. 1 conveyor 55 that withdraws the grains (No. 1 sorted material) sorted in the oscillating sorting panel 52, and a mixture of grains, straw scraps, grains with grains attached, etc. A No. 2 conveyor (56) is installed to withdraw the No. 2 sorted material. In addition, the No. 1 conveyor 55 and the No. 2 conveyor 56 are installed so as to extend horizontally above the rear part of the traveling crawler 2 when viewed from the side, in that order, from the front side in the direction of travel of the traveling body 1. there is.

The oscillation sorting panel 52 is configured to oscillate and sort (specific gravity sort) the threshed grains that have fallen below the barrel 51. The grains (first sorted product) that fall from the oscillating sorting board 52 have dust in the grains removed by the sorting wind from the winnowing fan 53, and fall on the No. 1 conveyor 55. A first grain bin 57 extending in the vertical direction is provided at the end portion of the No. 1 conveyor 55 that protrudes outward from one side wall (right wall in the embodiment) near the grain tank 7 in the threshing device 5. ) is connected to the pipe. The grains withdrawn from the No. 1 conveyor 55 are brought into the grain tank 7 by the No. 1 grain conveyor (not shown) installed in the first grain bin 57 and collected inside the grain tank 7.

The oscillation sorting panel 52 is used to oscillate the second sorted material such as grains with small diameters (reduced reprocessed material for re-sorting mixed with grains and straw scraps) to the second conveyor 56 by means of oscillation sorting (specific gravity sorting). It is configured to fall. The No. 2 sorted material taken out by the No. 2 conveyor 56 is returned to the upper surface side of the rocking sorting panel 52 through the No. 2 reduction tank 58 and the No. 2 processing unit 59 and is re-sorted. In addition, straw scraps and dust in the granulated material from the bucket 51 are blown from the rear of the traveling body 1 toward the pavement by the selective wind from the winnowing fan 53 and the intake 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. 6 to 8, the diesel engine 20 is supported against vibration via the engine bed 41 on the lower side of the driver's seat 10b in the traveling body 1. 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 and the threshing device 5, through a pulley and belt transmission system. The front and top sides of the diesel engine 20 are covered with an engine room cover 44. Additionally, a partition plate 16, which is an insulating plate, is installed 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 side of the engine room 43 is formed by the engine room cover 44 and the partition plate body 16.

Furthermore, as shown in FIG. 8, a box-shaped wind tunnel case 46 is erected and installed at the right end of the operating unit 10 in the traveling body 1 via an opening/closing branch axis 45. A water-cooling radiator 47 is erected inside the wind tunnel case 46 on the upper surface side of the traveling body 1, and the radiator 47 is placed against the cooling fan 48 of the diesel engine 20. Outside air (cooling wind) is introduced into the wind tunnel case 46 from the outside opening 46a on the right side of the wind tunnel case 46, and is introduced through the radiator 47 from the inside opening 46b on the left side of the wind tunnel case 46. By rotating the cooling fan 48, the dedusted cooling wind is sent into the engine room 43, and the diesel engine 20 and the like are cooled by the dedusted cooling wind. Additionally, a vibration isolation net is installed over the outer opening 46a on the right side of the wind tunnel case 46. The presence of the vibration isolation net prevents straw debris, etc. from entering the wind tunnel case 46 and further into the engine room 43.

Additionally, a shroud 481 of the embodiment covering the entire ventilation area of the radiator 47 is fixed, and a cooling fan 48 is disposed in an opening formed in this shroud 481. That is, a cooling fan 48 is disposed on 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 the cooling wind. Wind deflection plates (cooling wind guide plates) 482, 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 wind direction plate 482 has its right edge connected to the front of the fan shroud 481 and covers the front right side of the diesel engine 20, while the rear wind direction plate 483 is located on the right side at the rear 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 placed at a lower position than the lower end of the engine room cover 44. Meanwhile, the top of the rear wind direction plate 483 is set at approximately the same height as the top of the opening of the fan shroud 481 (see FIG. 17). By placing the upper end of the front side wind direction plate 482 at a low position, the exhaust gas purification case 50 is placed above the front side wind direction plate 482, thereby reducing the regeneration temperature in the exhaust gas purification case 50. can be suppressed.

As described above, the radiator 47 is arranged to face the cooling fan 48 installed on one side of the diesel engine 20, and the cooling wind passing through the radiator 47 is guided to the engine room 43. Wind guide plates (482, 483) are being installed. This creates a configuration that can efficiently supply cooling air from the radiator 47 into the engine room 43, thereby improving the cooling effect within the engine room 43. In addition, the shroud 481 is installed on the exhaust side of the radiator 47, and cooling wind guide plates 482 and 483 are fixed to both sides of the shroud 481. Then, a supply pipe (new inlet pipe) 108 from the air cleaner 49 is placed between the shroud 481 and the diesel engine 20. By arranging the air supply pipe 108 on the side of the shroud 481, the temperature rise caused by heating elements such as the exhaust gas purification case 50 is suppressed, thereby suppressing deterioration of the air supply pipe 108.

The radiator 47 is provided with a coolant pipe 471 connected to the coolant path of the diesel engine 20. The coolant pipe 471 is connected to an opening above the radiator 47, and causes the coolant circulating in the diesel engine 20 to return 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 side of the coolant pipe 471 connected to the diesel engine 20 is located closer to the diesel engine 20 than the air supply pipe 108. That is, the arrangement is such that the coolant pipe 471 passes between the air supply pipe 108, the diesel engine 20, and the exhaust gas purification case 50. Therefore, it can be installed compactly extended with the air supply pipe 108 and the cooling water pipe 471 by installing an appropriate spacing, and the cooling water pipe 471 on the return side functions as a heat shield for the air supply pipe 108.

In addition, a pair of left and right engine room struts 71 are erected and installed on the rear side of the operating unit 10 on the upper surface of the traveling body 1, and a rear plate body 72 is placed between the left and right engine room props 71. It is being installed across the board. That is, the engine room 43 is formed (divided) by the partition plate body 16, the engine room cover 44, the wind tunnel case 46, and the back 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, the left end of the output shaft 20a protrudes to the left side of the diesel engine 20, and the running drive belt 73 and the threshing drive belt 74 are connected to the left end (projected 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 the driving force of the diesel engine 20 is output 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 that supplies fresh air to the diesel engine 20 and an exhaust gas purification case 50 that processes the exhaust gas of the diesel engine 20 are provided. The upper surface 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 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, which is installed standing above the step 10b, and standing diagonally upward 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 installed between the rear upper surface 442 of the engine room cover 44 and the upper ends of the left and right engine room supports 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 silencer box 40 is mounted on the upper surface of the auxiliary cover body 440. The inside of the silencer box 40 is communicated to the wind tunnel case 46 through the air introduction pipe body 39, and the air cleaner 49 is communicated inside the silencer case 40. The air in the wind tunnel case 46 is introduced into the intake manifold 19 of the diesel engine 20 through the air cleaner 49. The wind tunnel case 46, the fresh air introduction pipe body 39, and the silencer box body 40 correspond to the outside air introduction part located outside the engine room 43. Additionally, an electrical box 38 is installed on the upper surface side of the silencer box 40. The engine controller, etc. are built into the electrical 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 room cover 44 via a seat support mechanism 10d. An exhaust gas purification case 50 is disposed on the front upper surface 441 of the engine room cover 44 and the lower side of the partition plate body 16. The exhaust gas purification case 50 is formed in an elongated 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 and the exhaust gas movement direction inside the exhaust gas purification case 50 are aligned. The output shaft 20a of the diesel engine 20 is parallel to the longitudinal direction of the exhaust gas purification case 50.

A lever case (operating tool case) 28 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 top of the engine room support 71 and is placed on the left side of the electrical box 38 behind the driver's seat 10b. That is, the lever case 28 is disposed in front of the tail pipe 84 and covers the rear end side from the middle portion of the tail pipe 84. Additionally, an auger stand 125 supporting the discharge auger 8 is disposed on the right side of the lever case 28. The auger stand 125 is fixed to the upper front surface of the threshing device 5.

With this configuration, the electric box 38, lever case 28, and auger stand 125 are arranged side by side behind the driver's seat 10b. Therefore, behind the driver's seat 10b, the electrical box 38, lever case 28, and auger stand 125 can function as heat shielding members that block heat from the tail pipe 84. Therefore, it is possible to prevent heat from the tail pipe 84 from being transmitted to the operator riding on the driver's seat 10b. Filter regeneration operation, etc., 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. In addition, by arranging the lever case 28 at the rear of the side column 15, the operator's operability can be improved because the operation tool is placed on one side of the operator seated on the driver's seat 10b.

The exhaust gas introduction side (exhaust inlet side) of the exhaust gas purification case 50 is located on the lower side of the partition plate body 16, and the exhaust gas purification case is located on the lower side of the front upper surface 441 of the engine room cover 44. The exhaust gas extraction side (exhaust outlet side) of (50) is located. An exhaust inlet pipe 81 is installed on the exhaust gas introduction side of the exhaust gas purification case 50, and an exhaust outlet pipe 82 is installed 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, which will be described later, and the exhaust inlet pipe ( 81) and the exhaust manifold 83 are connected. A tail pipe 84 is extended and installed between the threshing device 5 and the grain tank 7, and an 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 purification case 50 through the tail pipe 84 to the outside of the engine.

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 internal spaces 44a and 44c of the engine room cover 44 of the double structure are opened to form a wind tunnel case. It is connected to the internal space 46c of (46). The engine room cover 44 is the upper surface of the front upper surface 441, which has a double structure, and has openings 44d and 44e for external air intake at positions on both left and right sides of the driver's seat 10b. The front upper surface 441 of the engine room cover 44 has a double structure by protruding the left and right portions of the seat support mechanism 10d to form internal spaces 44a and 44b, and the internal spaces 44a and 44b are formed in a double structure. ) Openings 44d and 44e are formed on each upper surface. Additionally, a damping net is installed over the openings 44d and 44e for intake of outside air to prevent straw debris and the like from entering the internal spaces 44a and 44b. Additionally, the opening 44f formed at the right end of the internal space 44a is communicated with the upper opening 46d formed in the wind tunnel case 46. Meanwhile, below the front upper surface 441, an insulating plate body 445 is installed at a position whose height is equal to that of the partition plate body 16 so as to cover the entire front upper surface 441.

The engine room cover 44 has an opening 44g for intake of outside air on the front surface 443, which has a double structure. In addition, a dust isolation net is installed over the opening 44g for intake of outside air to prevent straw debris, etc. from entering the internal space 44c. The front surface 443 of the engine room cover 44 forms an internal space 44c that is open at the top, and communicates with the internal spaces 44a and 44b of the front upper surface 441, respectively. Additionally, the opening 44h formed at the right end of the internal space 44c is communicated with the lower opening 46e formed in the wind tunnel case 46. Meanwhile, an insulating plate body 445 is installed behind the front surface 443 to cover the entire surface of the front surface 443. Additionally, like the front side 443, an insulating plate body 445 is installed behind the rear side 444 to cover the entire rear side 444.

The wind tunnel case 46 is provided with a plurality of top and bottom outer openings 46a over which a vibration isolation net is installed, and a shielding plate 46f covering the outer openings 46a disposed on the lower side is disposed in the internal space 46c. I'm doing it. The shield plate 46f has a plurality of slits opening in the vertical direction, and is detachably installed on the left side of the wind tunnel case 46. By arranging the shielding plate 46f, which covers the outer opening 46a formed at the bottom, at a position opposite to the inner opening 46b, dust entering from the gap such as the outer opening 46a is blocked by the shielding plate 46f. It can be prevented. Additionally, by making the shielding plate 46f removable, dust can be easily removed from the shielding plate 46f.

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

A portion 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 internal space 46c of the wind tunnel case 46 through the opening 44f at the right end. Then, the remainder of the external air supplied from the opening 44d flows to the front of the internal space 44a and flows into the internal space 44c of the front surface 443 that communicates to the front of the internal space 44a. In addition, the outside air supplied from the opening 44e of the front upper surface 441 flows to the front of the internal space 44b and flows into the internal space 44c of the front surface 443 communicating with the front of the internal space 44a. . On the other hand, the outside air supplied from the opening 44g on the front surface 443 joins the outside air flowing in from the inside spaces 44a and 44b and flows to the right, and flows into the inside space of the wind tunnel case 46 through the opening 44h at the right end. flows into (46c).

In this way, cooling air from outside air flows through the internal spaces 44a to 44c of the double-structured engine room cover 44. Therefore, due to the heat insulating effect of the internal space 44d of the engine room cover 44, heat on the engine room 43 side is transmitted to the driver's seat 10b and the engine room cover 44 on the upper surface side of the engine room cover 44. Transmission to the step 10a on the front side can be suppressed. In addition, by introducing outside air through the engine room cover 44, the temperature rise outside the engine room cover 44 can be suppressed even if the upper and front parts of the exhaust gas purification case 50 are covered with the engine room cover 44. This can prevent the heat in the engine room 43 from being transmitted to the operator riding on the driver's seat 10b.

As described above, the driver's seat 10b is arranged on the upper surface side of the engine room cover 44 that covers the engine room 43. In addition, the engine room 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 has openings 43d, 44e, and 44g for sucking in outside air. have Therefore, the temperature rise outside the engine room cover 44 can be suppressed, and the heat in the engine room 43 can be prevented 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 of the driver's seat 10b and the diesel engine 20 is easy. Although it can be easily reduced, the exhaust gas purification case 50 can be compactly installed on the upper surface of the diesel engine 20. Additionally, a filter regeneration operation, etc. 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.

In addition, an exhaust gas purification case 50 is installed in the engine room 43 below the driver's seat 10b, and an air cleaner 49 is installed in the engine room 43 behind the driver's seat 10b. there is. Therefore, the high-temperature exhaust gas purification case 50 and the air cleaner 49 for introducing outside air can be compactly arranged above the diesel engine 20, adjacent to each other. For example, both the diesel engine 20 and the air cleaner 49 can be adjacent to the cooling air inlet of the diesel engine 20, so that outside air is supplied from the cooling wind inlet of the diesel engine 20 to the air cleaner 49. It can be easily introduced.

In addition, the radiator 47 is arranged adjacent to the diesel engine 20, and the inner space of the double-structured engine room cover 44 is communicated with the outside air intake side of the radiator 47. Therefore, the internal spaces 44a to 44c of the engine room cover 44 can be ventilated using the outside air suction power of the radiator 47 (cooling fan 48). Therefore, there is no need to specially install a ventilation fan or the like for blowing air into and out of the internal spaces 44a to 44c of the engine room cover 44, so it can be configured at low cost.

As shown in FIGS. 5 to 8, 12, and 13, the exhaust outlet pipe 82 is bent in an L shape toward the left and right center sides of the traveling body 1, and is bent toward the lower side (threshold) of the partition plate body 16. It is bent in an L shape toward the rear (near the entrance between the device 5 and the grain tank 7). That is, the exhaust outlet pipe 82 has a crank shape when viewed from the top. Accordingly, the mid-length portion of the exhaust gas purification case 50 and the exhaust outlet pipe 82 are adjacent to each other so as to extend parallel to the axis direction of the output shaft 20a of the diesel engine 20 when viewed from the top. The rear end side of the exhaust outlet pipe 82 and the front end side of the tail pipe 84 are in communication.

The tail pipe 84 discharges exhaust gas from between the threshing device 5 and the grain tank 7 to the rear upper side. The front end side of the tail pipe 84 is bent downward, the middle portion is extended upward, and the rear end side is bent so as to extend rearward from the rear upper side of the traveling crawler 2. 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 diagonally upward toward the rear. In addition, the rear end side of the tail pipe 84 is configured so that the front side is bent toward the threshing device 5 side, and then the rear side is turned toward the grain tank 7 side, and is bent in a C-shape when viewed from the top. The rear end of the tail pipe 84 has a curved shape that bypasses the upper end of the No. 1 grain bin 57 connected to the grain tank 7.

A midway support bracket 185 is welded and fixed to the longitudinal midway portion of the crank-shaped tail pipe 84 when viewed from the side. An attachment plate 186 is welded and fixed to the left side of the left engine room support 71. The intermediate support bracket 185 of the tail pipe 84 is attached to the attachment plate 186 of the left engine room support 71 through a roughly L-shaped connecting bracket 187 and bolted to enable position adjustment. A pair of adjustment slots 190 arranged vertically in the vertical length are formed on the attachment plate 186 of the left engine room support 71, and the vertical piece of the connection bracket 187 is connected through both adjustment slots 190. The attachment plate 186 is fixed so that its position can be adjusted up and down. In addition, a pair of adjustment slots 191 arranged front and rear in the left and right lengths are formed on the middle support bracket 185 of the tail pipe 184, and the horizontal piece portion of the connection bracket 187 is connected through both adjustment slots 191. 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 to the right side of the threshing device 5. The horizontal piece of the upright bracket 188 is bolted from above to the connection bracket 189 fixed to the upper right side of the threshing device 5. A pair of adjustment slots 192 are formed on the horizontal piece of the upright bracket 188, arranged back and forth in the left and right lengths, and the horizontal piece portion of the upright bracket 188 and the connection bracket 189 are formed by the adjustment slots 192 on both sides. The horizontal piece part is fixed so that the left and right positions can be adjusted. A pair of adjustment slots 193 are formed on the vertical piece of the connection bracket 189, arranged back and forth in the upper and lower lengths, and the vertical piece of the connection bracket 189 is connected to the threshing device 5 through both adjustment slots 193. It is fixed on the right side of the upper surface so that the position can be adjusted up and down.

Since the tail pipe 84 can be fixed to each of the threshing device 5 and the engine room support 71 in an adjustable vertical position, processing errors or assembly errors of the exhaust outlet pipe 82 and the tail pipe 84 are eliminated. It can be easily absorbed. As a result, the assembly 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 support 71 can be used concurrently as a support member for the tail pipe 84, so that the support structure for the tail pipe 84 can be manufactured at low cost.

As shown in FIGS. 6, 7, and 9, the inner diameter of the exhaust inlet at the front end of the tail pipe 84 is formed to be larger than the outer diameter of the exhaust outlet at the rear end of the exhaust outlet pipe 82. The exhaust inlet of the tail pipe 84 is closed to the exhaust outlet of the exhaust outlet pipe 82 in a circular shape. For this reason, external air is drawn under negative pressure 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 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 specifically suppressed.

5 to 8 and 12, the exhaust inlet side of the tail pipe 84 is supported at approximately the same height as the exhaust gas purification case 50 above the diesel engine 20, and the threshing device 5 ) The exhaust outlet side of the tail pipe 84 is supported at a position higher than the upper surface. And, the rear end side of the tail pipe 84 is disposed between the threshing device 5 and the grain tank 7 so as to cover the upper side of the winnowing pulley 89 that inputs the driving force of the diesel engine 20 to the threshing device 5. It is done. The outside air warmed by the arrangement of the tail pipes 84 is shielded by the tail pipe 84 and the pulley cover plate (tuyer pulley cover) 88, and is drawn into the tuyere fan 53 as selective air.

A quick-acting pulley 86 connected to a quick-acting input shaft 85 is disposed on the front right side of the threshing device 5. The quick-acting pulley 86 is linked with the tuyere pulley 89 and the belt to transmit the driving force of the engine 20 transmitted to the tuyere pulley 89 to the quick-acting input shaft 85. Moreover, the rapid 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 rapid action pulley 86 to the barrel 51. The quick-acting pulley 86 is disposed at a position between the threshing device 5 and the engine room 43, and its front and upper sides are covered with a pulley cover plate (quick-acting pulley cover) 87.

In addition, the harvesting device 3 is configured to be rotatable up and down around the horizontally long harvesting input pipe 130, which is axially supported on the harvesting stand 133 in front of the threshing device 5. Power from the rapid input shaft 85 can be transmitted to the harvesting input shaft 132 in the harvesting input pipe 130 through the inlet clutch 131, which transmits a certain rotational force to the harvesting device 3. In other words, the power from the diesel engine 20 is directly transmitted to the harvesting device 3 without going through the transmission case 42, thereby forcing the harvesting device 3 to be driven at a constant high rotation speed regardless of whether the vehicle speed is fast or slow. It is possible to do so.

The inflow clutch 131 includes a clutch operating mechanism 151 including a sector gear 141 (see FIG. 17), which is a rotating member rotatable around a rotating axis by driving a single electric motor 140, and a link mechanism 152. ) are related through. The clutch operating mechanism 151 that acts on the inlet clutch 131 is fixed to the support frame on the front right side of the threshing device 5, such as the rotation point 153 of the inlet clutch 131, and is located on the lower left side of the rapid pulley 86. is placed in As a result, the length of the link mechanism 152 connecting the inlet clutch 131 and the clutch operation mechanism 151 can be shortened to make it compact.

The tail pipe 84 has its central portion located to the right of the quick-acting pulley 86. Additionally, a rotary blade 90 having the rapid action input shaft 85 as its coaxial axis is installed on the rapid action pulley 86 so as to oppose the tail pipe 84. Therefore, the air warmed in the engine room 43 can be exhausted to the threshing apparatus 5 side by the rotary blade 90 rotating according to the rotation of the quick-acting pulley 86. Thereby, the air heated through the inside of the engine room 43 is guided to the space surrounded by the tail pipe 84, the quick-acting pulley cover 87, and the threshing device 5. Then, the warm outside air due to the arrangement of the tail pipes 84 is drawn into the winnowing fan 53 as selective air.

In addition, the rotary blade 90 rotates together with the rapid pulley 86, thereby generating negative pressure in the space between the threshing device 5 and the tail pipe 84. Therefore, the outside air on the side of the threshing apparatus 5 flows toward the quick-acting pulley 86, and the clutch operation mechanism 151 arrange|positioned at the lower left side of the quick-acting pulley 86 can be cooled. As a result, excessive heating of the clutch operating mechanism 151 can be prevented, thereby preventing failure of the electric motor 140 due to overheating.

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 with the axis direction of the output shaft 20a of the diesel engine 20 when viewed from the top. there is. Therefore, the exhaust gas purification case 50 and the exhaust outlet pipe 82 can be compactly arranged using the dead space on the upper surface side of the diesel engine 20. In addition, the exhaust outlet pipe 82 can be formed to be long along the longitudinal direction of the exhaust gas purification case 50, and the temperature of the exhaust gas can be lowered until it is discharged to the outside or the noise function can be improved. 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 device 5, The arrangement efficiency of the exhaust gas purification case 50, exhaust outlet pipe 82, and tail pipe 84 for each dead space can be improved.

In addition, the arrangement is parallel to the exhaust gas purification case 50 when viewed from the top, and the air cleaner 49 is disposed on the rear upper side of the exhaust gas purification case 50, so that the exhaust side of the exhaust gas purification case 50 The exhaust outlet pipe 82 connected to is installed to extend in parallel between the exhaust gas purification case 50 and the air cleaner 49. By arranging the air cleaner 49 away from the exhaust gas purification case 50, which is a high-temperature heat source, and by 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 due to the arrangement of the exhaust gas purification case 50 can be reduced.

As shown in Fig. 8, a lever pivot mechanism 17 for supporting the work clutch lever 14 and the like is disposed below 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 in conjunction with the operation of the work clutch lever 14, etc. It is being placed. It is provided with a side column cover 15a that covers the left side of the lever pivot mechanism 17 and the clutch operation link mechanism 18. 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 located between the partition plate body 16, the exhaust gas purification case 50, and the side column cover 15a.

Additionally, the exhaust gas purification case 50 is arranged so as to protrude below the side column 15, and a partition plate (heat-insulating plate) 16 is installed below the side column 15. Then, the partition plate body 16 is placed at a height 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 against heating of the exhaust gas purification case 50 or the like with the partition plate body 16, which is a heat insulating plate. In addition, it is possible to prevent exhaust air from being discharged toward the operator of the driver's seat 10b from the guide grooves of each lever 12 to 14 opened in the operation panel on the upper surface of the side column 15.

In the side column 50, as shown in FIG. 14, the main gear shift lever 12 and the auxiliary shift lever 13 are arranged left and right at the right front position of the driver's seat 10b, and the auxiliary shift lever 13 ), an aircraft attitude adjustment lever 161 for setting the left-right or front-back inclination angle of the traveling aircraft 1 is disposed in front of the aircraft. That is, in front of the side column 50 and close to the steering handle 10c, the main gear lever 12, the sub-shift lever 13, and the aircraft attitude control lever 161, which are operating levers for the odometer, are arranged. It is being placed. In addition, the side column 50 is provided with a liquid crystal display 162 at a position ahead of the main gear lever 12, and the running state and working state of the combine, which is a work machine, are displayed on the liquid crystal display 162.

As shown in FIG. 14, the side column 15 arranges the work clutch lever 14 at a position behind the main speed lever 12. The work clutch lever 14 serves as a lever for operating the power steps of the reaping device 3 and a lever for operating the power steps of the threshing device 5, and has a guide groove formed on the upper surface of the side column 15. It is configured to be able to move inclinedly in the forward and backward directions. When the work clutch lever 14 is located at the rear end of the guide groove, the power to both the reaping device 3 and the threshing device 5 is cut. In addition, when the work clutch lever 14 is located in the middle of the guide groove, power is transmitted only to the threshing device 5, and when the work clutch lever 14 is located at the front of the guide groove, the reaping device 3 and the threshing device 5 ) Power is transmitted to both sides.

As shown in FIG. 14, the side column 15 has an accelerator dial 163, a forward control switch 164, and a regeneration switch ( 165) is being deployed. The accelerator dial 163 is used to control the rotation speed of the diesel engine 20. The forward rotation control switch 164 is used to turn on and off the forward rotation control that keeps the rotation speed of the diesel engine 20 constant. The regeneration switch 165 is for selecting whether or not to execute the exhaust gas purification device (exhaust gas purification case) 50. The accelerator dial 163, forward rotation control switch 164, and regeneration switch 165 are installed on the left side of the driver's seat 10b for easy use by the operator.

The accelerator dial 163 can manually adjust the engine speed, and is used to keep the speed of the engine 20 constant during work. If the rotation speed of the engine 20 changes during work, the threshing performance deteriorates, so it is desirable to maintain it at all times during work. Work is performed while maintaining the rotation speed with the accelerator dial 163, so it is an operation dial that is often used during work. . In addition, the forward rotation control switch 164 keeps the rotation of the diesel engine 20 constant even if the load of the threshing device 5 changes and turns on and off the eco mode to always perform stable threshing and sorting.

The regeneration switch 165 is configured as a switch equipped with a regeneration lamp, and by flashing 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. Then, the operator turns on the regeneration switch 165 to cause 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 turns on the regeneration lamp to notify the operator that the exhaust gas purification device 50 is being regenerated.

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 containing an output shaft 20a and a piston (not shown). 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 separately arranged on both sides of the output shaft 20a. The output shaft 20a protrudes left and right outward from both left and right sides of the cylinder block 92.

As shown in Figs. 15 and 16, the flywheel housing 93 is fixed to the left side of the cylinder block 92. Install the flywheel (94) within the flywheel housing (93). It is configured to take out the driving force of the diesel engine 20 from the left end side of the output shaft 20a that supported the flywheel 94 toward the transmission case 42. Additionally, 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 installed opposing 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 (right side of the cylinder block 92) that intersects the output shaft 20a, and the cooling fan 48 is disposed on the side opposite to the one side that intersects the output shaft 20a. A flywheel 94 is disposed on the other side (left side of the cylinder block 92). The exhaust gas introduction side (exhaust inlet side) of the exhaust gas purification case 50 is located near the flywheel 94, and the exhaust gas extraction side (exhaust outlet side) of the exhaust gas purification case 50 is located near the cooling fan 48. It is located nearby.

In this configuration, the cooling wind from the cooling fan 48 reaches the exhaust gas outlet side (exhaust outlet side) through which the purified exhaust gas passes in the exhaust gas purification case 50, thereby lowering the purified exhaust gas temperature. It degrades. In the exhaust gas purification case 50, the exhaust gas introduction side (exhaust inlet side) through which the exhaust gas before the purification treatment passes is far from the cooling fan 48, and it is difficult for cooling wind to reach it. Therefore, the exhaust gas before the purification process can be maintained at a high temperature, so that the purification performance of the exhaust gas purification case 50 can be maintained appropriately. Additionally, the temperature of the exhaust gas after the purification treatment can be lowered and discharged to the outside, preventing ignition of, for example, packaging straw scraps.

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 of the turbocharger 105 and the exhaust gas recirculation device 96, which will be described later. The fresh air (outside air) that is sucked into the air cleaner 49, dedusted, and purified is sent to the intake manifold 19 through the compressor case 107 of the turbocharger 105 and the exhaust gas recirculation device 96 to the diesel engine ( 20) is supplied to each cylinder.

In the above configuration, a portion 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 is lowered, 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 connected to a fuel tank (not shown) and a common rail 99 are connected to each injector 97 for the four cylinders of the diesel engine 20. A common rail 99 and a fuel filter 100 are disposed on the intake manifold 19 installation side of the cylinder head 91, and a fuel pump ( 98) is being placed. Additionally, each injector 97 has an electronically opened/closed control type fuel injection valve (not shown). A 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. 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. 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 fuel injection pressure, injection timing, and injection period (injection amount) are controlled with high precision. Accordingly, nitrogen oxides (NOx) emitted from the diesel engine 20 can be reduced.

A turbocharger 105 is disposed above the exhaust manifold 83 in the front and side of the cylinder head 5. The turbocharger 105 includes a turbine case 106 with a turbine wheel built in, and a compressor case 107 with a blower wheel built in. The exhaust gas introduction side of the turbine case 106 is connected to the exhaust manifold 83. The exhaust inlet pipe 81 of the exhaust gas purification case 50 is connected to the exhaust gas outlet 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 outside the engine 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 through the air supply pipe 108. The air supply side of the compressor case 107 is connected to the intake manifold 19 through the supercharge pipe 109 and the exhaust gas recirculation device 96. That is, the fresh air dedusted and purified by the air cleaner 49 is sent from the compressor case 107 through the supercharger pipe 109 to the exhaust gas recirculation device 96, and then to each cylinder of the diesel engine 20. supplied.

15 and 16, an exhaust gas purification device for purifying the exhaust gas discharged from each cylinder of the diesel engine 20 includes an exhaust gas purification case ( 50) (Diesel Particulator Filter (DPF)) is provided. As shown in Fig. 15, an oxidation catalyst 111 and a particulate 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 engine via the exhaust gas purification case 50 and the like. The exhaust gas purification case 50 is configured to reduce carbon monoxide (CO), hydrocarbons (HC), particulate matter (PM), and nitrogen oxides (NOx) in the exhaust gas of the diesel engine 20.

The exhaust gas purification case 50 is configured as a horizontally elongated cylindrical shape that extends in a direction parallel to the output shaft 20a (crankshaft) of the diesel engine 20 when viewed from the top. An exhaust inlet pipe 81 for introducing exhaust gas is provided in the exhaust gas purification case 50 near the flywheel 94, and an exhaust inlet pipe 81 is installed in the exhaust gas purification case 50 near the cooling fan 48. An exhaust outlet pipe 82 is provided to discharge exhaust gas after purification treatment. On the left and right sides of the cylinder head 91, one end and the other end of the exhaust gas purification case 50 in the direction of exhaust gas movement are detachably supported through 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 through the left support leg 113 and the right support leg 114. The exhaust gas purification case 50 is located on the upper side of the exhaust manifold 83 with the longitudinal direction of the cylindrical exhaust gas purification case 50 facing in the left and right directions of the diesel engine 20.

As described above, the axial direction of the output shaft 20a of the diesel engine 20 and the exhaust gas movement direction inside the exhaust gas purification case 50 (the longitudinal direction of the exhaust gas purification case 50) coincide. Additionally, the longitudinal direction of the air cleaner 49 also 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 of the diesel engine 20 extend in a shape parallel to the axis direction of the output shaft 20a of the diesel engine 20 when viewed from the top. It is located upstairs. 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 body 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, and the upper part of the diesel engine 20 By effectively utilizing the dead space, the exhaust gas purification case 50 and the air cleaner 49 can be compactly arranged within the outer shape (within the front-to-back width and within the left-right width) when viewed from the top of the diesel engine 20. In addition, when viewed from the side, the height positions of the air cleaner 49 and the exhaust gas purification case 50 are such that the air cleaner 49 is at the upper side and the exhaust gas purification case 50 is at the lower side of the engine room cover 44. It follows the shape of stairs and is shifted up and down.

A turbocharger 105 is disposed above the exhaust manifold 83 to supercharge air to the diesel engine 20. 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. Additionally, an exhaust gas recirculation device 96 (EGR device) is disposed above the intake manifold 19 to recirculate the exhaust gas to the intake system (intake manifold 19) of the diesel engine 20. 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.

In this configuration, the exhaust gas purification case 50 and the turbocharger 105 related to the exhaust system are located on the exhaust manifold 83 side, and the air cleaner 49 and the exhaust gas recirculation device 96 related to the intake system are located on the intake side. They are arranged vertically and horizontally on the manifold (19) side. Therefore, it is easy to understand the arrangement of the exhaust system members (exhaust gas purification case 50 and turbocharger 105) and the arrangement of the intake system members (air cleaner 49 and exhaust gas recirculation device 96), and assembly workability is improved. It is helpful for improvement and maintainability. In addition, it is easy to arrange the exhaust system piping (exhaust outlet pipe 82, etc.) or intake system piping (intake pipe 108, etc.) around the exhaust system member or intake system member to the shortest possible length, and the intake and exhaust system piping Structures, etc. 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 the exhaust support plate 115 is bolted to the rear end of the exhaust outlet pipe 82. The bracket 116 is fixed by welding. Then, an 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 at the upper edge of the outlet pipe bracket 116. That is, the exhaust outlet pipe 82 is supported on the rear end side of the exhaust support plate 115 on the left side of the cylinder head 91 through the outlet pipe bracket 116.

In 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 support member for the exhaust outlet pipe 82, the exhaust gas purification case 50 and the exhaust outlet pipe 82 can be supported integrally, thereby forming a support structure for the exhaust outlet pipe 82. It can be manufactured at low cost. It can also contribute to improving the support rigidity of the exhaust outlet pipe 82.

Additionally, 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 outlet side) of the exhaust gas purification case 50 is connected to the exhaust gas outlet side (exhaust outlet side). Since the other end (rear end side) of the exhaust outlet pipe is connected to the left support leg 113 supporting the inlet side), the exhaust outlet pipe 82 is formed elongated along the longitudinal direction of the exhaust gas purification case 50. This makes it possible to lower the temperature of the exhaust gas until it is discharged outside the aircraft or to improve the noise function.

In addition to the configuration according to the above-described embodiment, as shown in FIG. 17, a heat shield plate 491 may be disposed between the air cleaner 49 and the exhaust outlet pipe 82 in the engine room 43. . That is, the air cleaner 49 is placed above the heat insulating plate 491, and the exhaust gas purification case 50 and the exhaust outlet pipe 82 are placed below the heat insulating plate 491. Therefore, since the arrangement from the exhaust gas purification case 50 and the exhaust outlet pipe 82 can be insulated with the heat shield 491, the exhaust gas purification case 50 and the exhaust outlet pipe to the air cleaner 49 ( 82), the influence of the arrangement can be further suppressed. The heat shield 491 is installed to extend from the engine room cover 44 into the engine room 43. Furthermore, in the embodiment shown in FIG. 17 , one end of the heat insulating plate 491 is fixed to the auxiliary cover body 440, and the front and lower sides of the air cleaner 49 are arranged so as to be covered with the insulating plate 491.

In addition, in the above-described embodiment, the clutch operating mechanism 151 is arranged below the left side of the rapid pulley 86, but as shown in FIG. 18, the clutch operating mechanism 151 is connected to the reaping stand 133 and travels. It does not matter if it is placed on the aircraft 1 side. That is, the clutch operating mechanism 151 is fixed to the back of the harvesting stand 133 and disposed below the harvesting input pipe 130. Then, a link mechanism 152 with one end connected to the sector gear 151 is installed extending upward, and the other end of the link mechanism 152 is connected to the inflow clutch 131. In the configuration of FIG. 18, the clutch operating mechanism 151 is arranged at a height position equal to that of the flywheel 94 (see FIG. 5) of the diesel engine 20, so that the clutch operating mechanism 151 is arranged from the engine room 43. It becomes difficult to be influenced by

That is, in the embodiment of FIG. 18, the air heated by passing through the inside of the engine room 43 by the rotary blade 90 rotating together with the rapid pulley 86 flows upward, so that it is at the same height as the harvesting stand 133. Heating of the clutch operating mechanism 151 located therein can be suppressed. As a result, excessive heating of the clutch operating mechanism 151 can be prevented and failure of the electric motor 140 due to overheating can be prevented. In addition, by arranging the clutch operation mechanism 151 on the traveling body 1 side as shown in FIG. 18, the clutch operation mechanism 151 can be placed away from the exhaust side of the engine room 43, so that the rotary blade 90 ) can be omitted to reduce the number of parts.

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

1: Running body 3: Reaping 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 (4)

A reaping device for reaping unharvested grain stalks in the field, a threshing device for threshing the reaped grain stalks harvested with the reaping device, a traveling machine equipped with the reaping device and the threshing device, and an engine room installed on the traveling machine. In a combine having an engine and an exhaust gas purification case for processing exhaust gas of the engine,
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 communicating with the exhaust outlet of the exhaust gas purification case is disposed at a higher position than the upper surface of the threshing device,
An exhaust inlet pipe for introducing exhaust gas into the exhaust gas purification case is disposed on one side of the longitudinal direction of the exhaust gas purification case, and an exhaust outlet pipe is formed on the other side,
A driver's seat is disposed above the engine room, and a heat shield member is interposed between the air cleaner disposed behind the driver's seat and the exhaust outlet pipe,
A combine characterized in that the front end side of the tail pipe communicates with the exhaust outlet pipe, the middle part of the tail pipe is supported by an engine room support, and the rear end side of the tail pipe is supported by the threshing device. According to claim 1,
A combine characterized in that the exhaust inlet pipe is formed on the lower side of the exhaust gas purification case, and the exhaust outlet pipe is formed on the side of the exhaust gas purification case. According to claim 1,
The combine is characterized in that the exhaust outlet pipe is arranged toward the rear from within the engine room. According to claim 1,
A driving unit having a side column is disposed on the upper surface of the engine room cover covering the engine room,
A combine characterized in that the exhaust gas purification case formed in a long cylindrical shape is disposed below the side column.