JP2015015938A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine that can support an exhaust gas purification case 50 between a lower surface of a driving seat 10b and an upper surface of an engine 20 so as to reduce easily an installation width in a horizontal direction of the driving seat 10b and the engine 20.SOLUTION: The combine includes: a reaping device 3; a threshing device 5; a traveling machine body 1 to which the reaping device 3 and the threshing device 5 are installed; the engine 20 installed inside an engine room 43 on the traveling machine body 1; and the exhaust gas purification case 50 for treating an exhaust gas of the engine 20. The combine has a structure where the driving seat 10b is supported on an upper side of the engine room 43, a side column 15 is disposed on a machinery side in the engine room 43, and the exhaust gas purification case 50 is disposed on the upper side of the engine 20 in the interior of the engine room 43 positioned downward the driving seat 10b, where part of the exhaust gas purification case 50 is lapped over the side column 15 in a plane view.

Description

  The present invention relates to a combine that harvests grains by threshing the harvested corn straw with a threshing device while harvesting the unmilled grain moth on the field by a reaping device, and more specifically, causes an uncut cereal grain on the field. The present invention relates to a combine equipped with a grain raising apparatus.

  In a conventional combine, a part of the exhaust gas purification case protrudes on the side of the cutting device arranged to be movable up and down on the front side of the traveling machine body, and the exhaust gas purification case is arranged to be biased toward the cutting device (Patent Document). 1). Further, the engine room top plate is formed in a stepped shape, and the exhaust gas purification case is arranged at a position higher than the lower part of the driver seat (see Patent Document 2).

JP 2013-1 Japanese Unexamined Patent Publication No. 2013-2

  In the prior art, it is necessary to dispose an exhaust gas purification case inside the engine room near the harvesting device and to direct the exhaust gas movement direction of the exhaust gas purification case in the longitudinal direction of the fuselage. In the structure that secures the mounting position of the engine, the engine is also arranged closer to the mowing device with respect to the driver seat, and there is a problem that the installation width of the driver seat and the engine arranged in the upper and lower directions cannot be easily reduced. is there.

  Therefore, the present invention seeks to provide a combine that has been improved by examining these current conditions.

  In order to achieve the object, a combine according to a first aspect of the present invention includes a harvesting device, a threshing device, a traveling machine body in which the harvesting device and the threshing device are installed, and an engine room on the traveling machine body. In a combine including an engine and an exhaust gas purification case for treating exhaust gas of the engine, a driving seat is supported on the upper surface side of the engine room, a side column is disposed on the inner side of the engine room, and the driving is performed. The exhaust gas purification case is arranged on the upper surface side of the engine in the engine room below the seat, and a part of the exhaust gas purification case is wrapped on the side column in a plan view.

  According to a second aspect of the present invention, there is provided the combine according to the first aspect, wherein the engine room is formed with a heat shield plate that partitions an operation lever installation portion on the upper side of the side column and the exhaust gas purification case. An engine room cover is provided, and the heat shield plate is continuously provided on one end side of the engine room cover.

  According to a third aspect of the present invention, in the combine according to the second aspect, the heat shield plate body is formed in a double structure, and the air in the inner space of the heat shield plate body is cooled by the cooling wind of the engine. It is configured to ventilate.

  According to a fourth aspect of the present invention, there is provided the combine according to the second aspect, further comprising an electric ventilation fan that ventilates the internal space of the heat shield plate having a double structure, and after a certain time with respect to the key switch turning operation. The electric ventilation fan can be stopped with a delay.

  According to the first aspect of the present invention, a reaping device, a threshing device, a traveling machine body in which the reaping device and the threshing device are installed, an engine installed in an engine room on the traveling machine body, and the engine In a combine provided with an exhaust gas purification case for treating exhaust gas, a driver's seat is supported on the upper surface side of the engine room, a side column is disposed on the inner side of the engine room, and the engine room below the driver seat The exhaust gas purification case is arranged on the upper surface side of the engine inside, and a part of the exhaust gas purification case is wrapped on the side column in a plan view. The exhaust gas purification case can be installed in the engine room, and the exhaust gas purification case is provided between the driver seat lower surface and the engine upper surface. Although the installation width of the driver's seat and the engine in the left-right direction can be easily reduced, the space on the upper surface side of the engine is used in the outline in plan view (within the front-rear width and the left-right width of the engine). The exhaust gas purification case can be installed compactly. For example, the exhaust inlet of the exhaust gas purification case can be formed close to the exhaust manifold of the engine, and the exhaust outlet pipe of the exhaust gas purification case faces the rear of the fuselage using the space on the lower side of the side column. The exhaust gas purification case mounting structure or the exhaust gas inlet / outlet piping structure can be configured at low cost.

  According to the second aspect of the present invention, the apparatus includes a heat shield plate that partitions between the operation lever installation part on the upper side of the side column and the exhaust gas purification case, and an engine room cover that forms the engine room, Since the heat shield plate body is continuously provided on one end side of the engine room cover, the temperature increase on the side column side can be easily suppressed by the heat insulating action of the heat shield plate body, and the driver seat It is possible to prevent the air on the side column side from being transmitted to the sitting operator. A filter regeneration operation in which the exhaust gas temperature in the exhaust gas purification case is maintained at a high temperature can be smoothly executed.

  According to a third aspect of the present invention, the heat shield plate is formed in a double structure, and the air in the inner space of the heat shield plate is ventilated by the cooling wind of the engine. Therefore, the internal space of the heat shield plate can be ventilated by using the outside air suction input of the engine cooling radiator (cooling fan). There is no need to provide a special ventilation fan or the like for allowing air in and out of the internal space of the heat shield plate to be constructed at low cost.

  According to the fourth aspect of the present invention, the electric ventilation fan is provided that ventilates the internal space of the heat shield plate having a double structure, and the electric ventilation fan is delayed after a certain time with respect to the key switch turning operation. Therefore, even if the key switch is turned off and the cooling fan of the engine is stopped, ventilation of the heat shield plate (internal space) can be continued by the electric ventilation fan. . It is possible to prevent the heat shield plate body from being excessively heated by the heat generation (residual heat) of the exhaust gas purification case after the engine is stopped. In addition, the cooling of the heat shield plate can promote the temperature drop of the operation lever installation part on the side column upper surface side.

It is a left view of the combine for 4 thread cutting of this invention. It is a right view of a combine. It is a top view of a combine. It is a perspective view of the operation part seen from the left rear. It is a left view of a driving part. FIG. 6 is an enlarged view of FIG. 5. It is a left view of an engine room. It is a front view of an engine room. It is a rear view of an engine room. It is a front view of the engine room which shows a modification. It is a perspective view of the front side of an engine. It is a perspective view of the back side of an engine. It is a front view of an engine. It is a rear view of an engine. It is a perspective view of the back side of the engine which shows a modification. It is expansion explanatory drawing of the engine. It is an expansion explanatory view of the upper surface side of the engine.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying a combine according to the present invention will be described with reference to the drawings. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side. The combine of this embodiment is demonstrated with reference to FIG. 1 thru | or FIG. As shown in FIGS. 1 to 4, a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 (traveling portions) is provided. At the front part of the traveling machine body 1, a four-row mowing device 3 for mowing cereals is mounted by a single-acting hoisting hydraulic cylinder 4 so as to be adjustable up and down around the mowing pivot fulcrum shaft 4a. . A threshing device 5 having a feed chain 6 and a grain tank 7 for storing grain after threshing are mounted on the traveling machine body 1 side by side. In addition, the threshing apparatus 5 is arrange | positioned at the left side toward the advancing direction of the traveling body 1, and the Glen tank 7 is arrange | positioned at the right side toward the advancing direction of the traveling body 1 (refer FIG. 3).

  A discharge auger 8 for discharging the grains in the grain tank 7 from the rear to the top of the grain tank 7 is provided. Centering on the vertical auger 8a of the discharge auger 8, the front part of the glen tank 8 can be rotated to the side of the machine body. A driving unit 10 is provided in front of the Glen tank 7 and on the right front of the traveling machine body 1. The driving unit 10 includes a step 10a on which an operator gets on, a driver's seat 10b, a handle column 11 provided with a steering handle 10c, a main speed change lever 12, a sub speed change lever 13, a work clutch lever 14, or switches. The side column 15 is arranged.

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

  As shown in FIG. 1 to FIG. 3, the reaping device 3 includes a four-row culm pulling device 31 that causes uncut cereals in the field and a clipper-type cutting device that cuts the stock of uncut cereals in the field. A cutting blade device 32 and a culm transporting device 33 for transporting the chopped culm from the culm pulling device 31 to the front end (feed start end side) of the feed chain 6 are provided. An uncut grain culm in the field is pulled up by the grain culling pulling device 31, and a stock source of the uncut grain culm is cut by the cutting blade device 32. Is done.

  The threshing device 5 includes a handling cylinder 51 for threshing threshing, an oscillating sorting board 52 as an oscillating sorting mechanism for sorting threshing material falling below the handling cylinder 51, and a sorting wind on the oscillating sorting board 52. , A processing fan 54 for reprocessing threshing waste taken out from the rear part of the handling cylinder 51, and a dust exhausting fan 61 for discharging dust at the rear part of the swing sorter 52 to the outside of the machine. It has.

  As shown in FIGS. 1 and 2, an exhaust chain 62 is disposed on the rear end side (feed end side) of the feed chain 6. The waste passed through the feed chain 6 from the rear end side of the feed chain 6 (the grain from which the grain has been threshed) is discharged to the rear of the traveling machine body 1 in a long state, or the rear side of the threshing device 5 After being cut to a suitable length by the waste cutter 63 provided at the front, the paper is discharged to the lower rear of the traveling machine body 1.

  Below the rocking sorter 52 are a first conveyor 55 for picking up the grains (the first sort) selected by the rocking sorter 52, and grains, swarf, and grains with branches. A second conveyor 56 is provided to take out the mixed second selection. In addition, from the front side of the traveling direction of the traveling machine body 1, the first conveyor 55 and the second conveyor 56 are arranged on the upper surface side of the traveling machine body 1 above the rear part of the traveling crawler 2 in a side view.

  The swing sorting board 52 is configured to swing-sort (specific gravity sort) the cereal grains that have fallen below the handling cylinder 51. Grains that fall from the oscillating sorter 52 (the first sort) are removed from the grain by the sorter wind from the tang fan 53 and fall first onto the conveyor 55. A first cereal cylinder 57 extending in the vertical direction is connected to a terminal portion of the first conveyor 55 that protrudes outward from one side wall (right side wall in the embodiment) of the threshing device 5 near the grain tank 7. Yes. The grain taken out from the first conveyor 55 is carried into the Glen tank 7 by a first cereal conveyor (not shown) provided in the first cereal cylinder 57 and collected in the Glen tank 7.

  Oscillating sorter 52 performs second sorting such as grain with branches and branches (reduction-reprocessed product for re-sorting mixed grain and swarf) by swing sorting (specific gravity sorting). 56 is configured to be dropped. The second sorting product taken out by the second conveyor 56 is returned to the upper surface side of the swing sorting board 52 through the second reduction cylinder 58 and the second processing unit 59 and is re-sorted. Further, the dust and dust in the crushed material from the handling drum 51 are discharged from the rear portion of the traveling machine body 1 toward the field by the sorting air from the tang fan 53 and the dust suction and discharge action of the dust fan 61. .

  Next, the mounting structure of the diesel engine 20 will be described with reference to FIGS. As shown in FIGS. 6 to 9, the diesel engine 20 is supported in an anti-vibration manner via the engine bed 41 on the upper surface below the driver's seat 10 b in the upper surface of the traveling body 1 of the driving unit 10. The driving force of the diesel engine 20 is transmitted to the belt to the traveling drive mission case 42 in the front part of the track frame 21 or to each part. The engine room cover 44 that forms the front side or the upper side of the engine room 43 covers the front side and the upper side of the diesel engine 20. In addition, the partition plate body 16 is stretched below the side column 15, and the upper surface side of the engine room 43 is formed by the partition plate body 16, and the upper surface side of the diesel engine 20 is covered by the partition plate body 16.

  Further, as shown in FIGS. 6 to 8, a box-shaped wind tunnel case 46 is erected on the right end portion of the traveling machine body 1 of the operating unit 10 via an opening / closing fulcrum shaft 45, and an engine room cover is provided on the inner surface of the wind tunnel case 46. The right end of 44 is connected. A water-cooling radiator 47 is erected on the upper surface side of the traveling machine body 1 inside the wind tunnel case 46, and the radiator 47 is disposed to face the cooling fan 48 of the diesel engine 20. The outside air (cooling wind) is taken into the wind tunnel case 46 from the outside opening 46 a at the upper part of the wind tunnel case 46, and the cooling fan is introduced from the inside opening 46 b at the lower part of the wind tunnel case 46 into the engine room 43 through the radiator 47. The dust-removed corner cooling air is moved by 48 forces, and the diesel engine 20 and the like are cooled by the dust-removing corner cooling air. Note that a dust removal net is stretched in the machine-side opening 46a to prevent intrusion of dust and the like into the wind tunnel case 46.

  Further, as shown in FIGS. 6, 7, and 9, left and right engine room columns 71 are erected on the upper surface of the traveling machine body 1 on the rear side of the driving unit 10, and a back plate 72 is stretched between the left and right engine room columns 71. Make it. That is, the engine room 43 is formed by the partition plate body 16, the engine room cover 44, the wind tunnel case 46, and the back plate body 72, and the output shaft 20a (crankshaft) of the diesel engine 20 is directed left and right to A diesel engine 20 is installed in the room 43. A left end portion of the output shaft 20a protrudes from the left side of the diesel engine 20, and a travel drive belt 73 and a threshing drive belt 74 are connected to the left end portion of the output shaft 20a, so that the travel crawler 2 and the threshing device 5 are connected. The driving force of the diesel engine 20 is output.

  On the other hand, as shown in FIGS. 4 to 9, an air cleaner 49 that supplies fresh air to the diesel engine 20 and an exhaust gas purification case 50 that processes exhaust gas of the diesel engine 20 are provided. The upper surface side of the engine room cover 44 is formed in a stepped manner, and the front upper surface 44a is formed lower and the rear upper surface 44b is formed higher on the upper surface side of the engine room cover 44. An auxiliary cover body 44c is provided between the rear end of the rear upper surface 44b of the engine room cover 44 and the upper ends of the left and right engine room columns 71. An air cleaner 49 is fixed to the lower surface of the auxiliary cover body 44c, and the rear upper surface 44b of the engine room cover 44 and The air cleaner 49 is disposed on the lower surface side of the auxiliary cover body 44c, and the sound deadening box body 40 is mounted on the upper surface side of the auxiliary cover body 44c, and the inside of the sound deadening box body 40 is placed in the wind tunnel case 46 via the fresh air intake pipe body 39. The air cleaner 49 is communicated with the inside of the sound deadening box 40. The air in the wind tunnel case 46 is taken into the intake manifold 19 of the diesel engine 20 via the air cleaner 49 and the fresh air intake pipe 49a. An electrical equipment box 38 is provided on the upper surface side of the sound deadening box 40, and an engine controller or the like is provided inside.

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

  That is, as shown in FIGS. 7 and 8, the exhaust gas intake side of the exhaust gas purification case 50 in which the exhaust inlet pipe 81 is disposed is positioned below the front upper surface 44a of the engine room cover 44, and the partition plate body. 16, the exhaust gas extraction side of the exhaust gas purification case 50 in which the exhaust outlet pipe 82 is disposed is positioned. While connecting the exhaust inlet pipe 81 to the exhaust manifold 83 of the diesel engine 20, a tail pipe 84 is extended between the threshing device 5 and the glen tank 7 on the upper surface side of the traveling machine body 1, and the exhaust pipe is connected to the tail pipe 84. 82 is in communication. Exhaust gas discharged from the exhaust manifold 83 of the diesel engine 20 is discharged outside the machine from the exhaust gas purification case 50 via the tail pipe 84.

  In addition, as shown in FIGS. 6 to 8, the partition plate body 16 and the engine room cover 44 are formed in a double structure, and the left and right end portions of the internal space 16 a of the double structure partition plate body 16 are opened, The left and right ends of the internal space 44d of the engine room cover 44 having a double structure are opened. The vertical thickness dimension of the partition plate body 16 and the vertical width dimension of the internal space 44d of the engine room cover 44 are substantially equal, and the right end portion of the partition plate body 16 is formed on the left end portion of the internal space 44d of the engine room cover 44. Insert the mating. That is, the left end portion of the engine room cover 44 is fitted to the right end portion of the partition plate body 16, and the internal space 16a of the partition plate body 16 and the internal space 44d of the engine room cover 44 are communicated.

  Further, the right end portion of the internal space 44d of the engine room cover 44 is inserted into the wind tunnel case 46, and the internal space 44d of the engine room cover 44 is communicated with the interior of the wind tunnel case 46, so that the engine room cover 44 having a double structure is provided. Is connected to the outside air intake side of the radiator 47 adjacent to the diesel engine 20. The dual structure partition plate 16 and the engine room cover 44 cover the exhaust gas purification case. The heat insulation action of the internal space 16a of the partition plate body 16 and the heat insulation of the internal space 44d of the engine room cover 44 are provided. The action suppresses the heat on the engine room 43 side from being transmitted to the driver seat 10b on the upper surface side of the engine room cover 44 or the upper surface side of the side column 15.

  In addition, as shown in FIGS. 8 and 9, a lever fulcrum shaft mechanism 17 that supports the work clutch lever 14 and the like is disposed above the upper surface of the partition plate body 16 on the lower surface side of the horizontal surface portion of the side column 15. At the same time, the left end of the partition plate 16 and the left end of the exhaust gas purification case 50 are positioned in a vertical plane, and the left end of the partition plate 16 and the left side of the left end of the exhaust gas purification case 50 A clutch operation link mechanism 18 is arranged in which the threshing drive belt 74 is operated to be tensioned or relaxed in conjunction with the operation of the work clutch lever 14 or the like. A side column cover 15 a that covers the left side of the lever fulcrum shaft mechanism 17 or the clutch operation link mechanism 18 is provided, and the upper end of the side column cover 15 a is connected to the lower end of the left side surface of the side column 15. That is, the side column cover 15a is disposed to face the left opening of the internal space 16a of the partition plate body 16, and the clutch operation link mechanism 18 is provided between the partition plate body 16 and the exhaust gas purification case 50 and the side column cover 15a. Is placed.

  As shown in FIGS. 1 and 4 to 9, the reaping device 3, the threshing device 5, the traveling machine body 1 in which the reaping device 3 and the threshing apparatus 5 are installed, and the engine room 43 on the traveling machine body 1 are installed. In a combine including a diesel engine 20 and an exhaust gas purification case 50 for processing exhaust gas of the diesel engine 20, the driver's seat 10 b is supported on the upper surface side of the engine room 43, and the side column 15 is disposed on the inner side of the engine room 43. The exhaust gas purification case 50 is disposed on the upper surface side of the diesel engine 20 in the engine room 43 below the driver seat 10b, and a part of the exhaust gas purification case 50 is seen in a plan view on the side column 15. Wrapped with. Therefore, the exhaust gas purification case 50 can be installed in the engine room 43 directly below the driver seat 10b, and the exhaust gas purification case 50 can be installed between the lower surface of the driver seat 10b and the upper surface of the diesel engine 20, and the driver seat 10b and the diesel engine 20 The exhaust gas purifying case can be easily reduced in the left-right direction, but within the plan view outline (within the front-rear width and the left-right width of the diesel engine 20) using the space on the upper surface side of the diesel engine 20 50 can be installed compactly. For example, the exhaust inlet pipe 81 of the exhaust gas purification case 50 can be formed close to the exhaust manifold 83 of the diesel engine 20, and the exhaust outlet pipe 82 of the exhaust gas purification case 50 can be formed using the space on the lower side of the side column 15. It can be easily extended toward the rear of the machine body, and the exhaust gas purification case 50 mounting structure or the exhaust gas inlet / outlet piping structure can be constructed at low cost.

  As shown in FIGS. 4 to 9, the partition plate body 16 as a heat shield plate body that partitions between the work clutch lever 14 (operation lever) installation portion on the upper surface side of the side column 15 and the exhaust gas purification case 50, and the engine room 43 The engine room cover 44 is formed, and the partition plate 16 is continuously provided on one end side of the engine room cover 44. Therefore, the temperature rise on the side column 15 side can be easily suppressed by the heat insulating action of the partition plate body 16, and the hot air on the side column 15 side can be prevented from being transmitted to the operator sitting 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 executed smoothly.

  As shown in FIGS. 4 to 9, the partition plate body 16 is formed in a double structure, and the air in the internal space of the partition plate body 16 is ventilated by the cooling wind power of the diesel engine 20. Therefore, the internal space of the partition plate body 16 can be ventilated using the outside air suction input of the radiator 47 (cooling fan 48) for cooling the diesel engine 20. There is no need to provide a special ventilation fan or the like for allowing air in and out of the internal space of the partition plate body 16 to be configured at low cost.

  Furthermore, with reference to FIG. 10, the deformation | transformation structure of FIG. 8 is demonstrated. In the structure of the engine room cover 44 shown in FIG. 10 instead of the structure of FIG. 8 in which the internal space 44d of the engine room cover 44 is communicated with the inside of the wind tunnel case 46, the right end portion of the internal space 44d of the engine room cover 44 is closed. The ventilation fan 77 is provided at the right end of the internal space 44d, and the ventilation fan 77 is driven by the electric motor 78. By turning off the key switch 79 that stops the diesel engine 20, the electric motor 78 is turned on. The timer is driven until a predetermined time elapses, and the air in the engine room 43 is supplied to the right end of the internal space 44d of the engine room cover 44 by the ventilation fan 77, and the left end of the internal space 16a of the partition plate body 16 is supplied. From the opening, the warm-up of the internal space 44d of the engine room cover 44 is discharged outside the apparatus.

  That is, as shown in FIG. 10, a ventilation fan 77 is provided for ventilating the internal space 44d of the engine room cover 44 having a double structure. When the operator enters and operates the key switch 79, the ventilation fan 77 is automatically activated. On the other hand, when the operator turns off the key switch 79, the electric ventilation fan 77 is delayed and automatically stopped after a certain time. When the diesel engine 20 is stopped, the internal temperature of the engine room 43 is not excessively increased due to heat generated by the exhaust gas purification case 50 or the like. In addition, a cylindrical air guide body 76 having one end facing the leeward side of the cooling fan 48 is provided, and the other end side of the air guide body 76 is communicated with the suction side of the ventilation fan 77 so that the internal space of the partition plate body 16 is communicated. A part of the cooling fan 48 wind may be taken into the internal space 44 d of 16 a or the engine room cover 44 via the air blowing guide body 76.

  As shown in FIG. 10, an electric ventilation fan 77 for ventilating the internal space of the double-structure partition plate 16 is provided, and the electric ventilation fan 77 is delayed and stopped after a certain time with respect to the key switch 79 turning operation. It is configured as possible. Therefore, even if the key switch 79 is turned off and the cooling fan 48 of the diesel engine 20 is stopped, the ventilation of the partition plate body 16 (internal space) can be continued by the electric ventilation fan 77. It is possible to prevent the partition plate body 16 from being excessively heated by the heat generation (residual heat) of the exhaust gas purification case 50 after the diesel engine 20 is stopped. Moreover, the cooling of the partition plate body 16 can also promote the temperature drop of the operation lever (work clutch lever 14) installation portion on the upper surface side of the side column 15.

  Next, the diesel engine 20 will be described with reference to FIGS. As shown in FIGS. 11 to 14, an intake manifold 19 is disposed on one side surface of the cylinder head 91 of the diesel engine 20. The cylinder head 91 is mounted on a cylinder block 92 containing an engine output shaft 20a and a piston (not shown). An exhaust manifold 83 is disposed on the other side of the cylinder head 91, and the front end and the rear end of the engine output shaft 20a are projected from the front and rear surfaces of the cylinder block 92.

  As shown in FIGS. 3 to 5, a flywheel housing 93 is fixed to the rear surface of the cylinder block 92. A flywheel 94 is provided in the flywheel housing 93. The power of the diesel engine 20 is extracted from the left end side of the engine output shaft 20a on which the flywheel 94 is pivotally supported toward the transmission case 42. Further, an oil pan 95 is disposed on the lower surface of the cylinder block 92, a cooling fan 48 is disposed on the front surface side of the cylinder block 92, and a radiator 47 is disposed facing the cooling fan 48 (see FIG. 8).

  As shown in FIGS. 12 and 14, an exhaust gas recirculation device (EGR) 96 that takes in exhaust gas for recirculation is disposed in the intake manifold 19. An air cleaner 49 shown in FIG. 4 is connected to the intake manifold 19 via an exhaust gas recirculation device 96. The external air that has been dust-removed and purified by the air cleaner 49 is sent to the intake manifold 19 and supplied to each cylinder of the diesel engine 20.

  With the above configuration, a part of the exhaust gas discharged from the diesel engine 20 to the exhaust manifold 83 is recirculated from the intake manifold 19 to each cylinder of the diesel engine 20 via the exhaust gas recirculation device 96. The combustion temperature of the diesel engine 20 is lowered, the amount of nitrogen oxide (NOx) discharged from the diesel engine 20 is reduced, and the fuel efficiency of the diesel engine 20 is improved.

  As shown in FIG. 12, each of the injectors 97 for the four cylinders of the diesel engine 20 includes a fuel pump 98 and a common rail 99 for connecting a fuel tank (not shown). 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 disposed on a cylinder block 92 below the intake manifold 19. Each injector 97 has an electromagnetic switching control type fuel injection valve (not shown). A common rail 99 is connected to the discharge side of the fuel pump 98, a cylindrical common rail 99 is connected to each injector 97 of the diesel engine 20, high pressure fuel is temporarily stored in the common rail 99, and high pressure fuel in the common rail 99 is It is supplied into each cylinder (cylinder) of the diesel engine 20.

  With the above configuration, the fuel of the diesel engine 20 is pumped to the common rail 99 by the fuel pump 98, the high-pressure fuel is stored in the common rail 99, and the fuel injection valves of the injectors 97 are controlled to open and close. The high-pressure fuel in 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) can be controlled with high accuracy. Therefore, nitrogen oxides (NOx) discharged from the diesel engine 20 can be reduced.

  As shown in FIGS. 11 to 14, as an exhaust gas purification device for purifying exhaust gas discharged from each cylinder of the diesel engine 20, diesel particulates that remove particulate matter in the exhaust gas of the diesel engine 20 are used. An exhaust gas purification case 50 as a filter (DPF) is provided. As shown in FIG. 11, an oxidation catalyst 111 and a soot filter 112 are provided in the exhaust gas purification case 50. 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 and the like. The exhaust gas purification case 50 is configured to reduce carbon monoxide (CO), hydrocarbon (HC), particulate matter (PM), and nitrogen oxides (NOx) in the exhaust gas of the diesel engine 20. doing.

  The exhaust gas purification case 50 is configured in a horizontally long elongated cylindrical shape that extends long in a direction parallel to the output shaft (crankshaft) of the diesel engine 20 in plan view. An exhaust inlet pipe 81 for taking in the exhaust gas is provided in the cylindrical middle part of the exhaust gas purification case 50. One end of the exhaust gas purification case 50 (upper side in the exhaust gas movement direction) is detachably supported on the front side of the cylinder head 32 of the front surface of the diesel engine 20 via the front support leg 113. On the other hand, the lower end side of the rear support leg 114 is fastened to the rear part of the exhaust manifold 83 in the rear surface of the diesel engine 20, and the other end of the exhaust gas purification case 50 (exhaust gas movement direction) is connected to the upper end side of the rear support leg 114. The lower side is detachably fastened. Of the rear surface of the diesel engine 20, the lower end side of the auxiliary support leg body 117 is fastened to the rear surface of the cylinder head 32, and the upper end side of the auxiliary support leg body 117 is detachably supported on the upper end side of the rear support leg body 114. That is, the exhaust gas purification case 50 is attached to the upper surface side of the diesel engine 20 through the front support leg 113, the rear support leg 114, and the auxiliary support leg 117. The longitudinal direction (exhaust gas movement direction) of the cylindrical exhaust gas purification case 50 is directed in the front-rear direction of the diesel engine 20, and the exhaust gas purification case 50 is placed in parallel with the exhaust manifold 83 above the exhaust manifold 83. Support the rack posture.

  Further, as shown in FIGS. 12 and 14, the exhaust column 115 is erected on the rear surface of the cylinder head 32, the outlet tube bracket 116 is welded and fixed to the exhaust outlet tube 82, and the outlet tube bracket is disposed on the upper end side of the exhaust column 115. 116 is bolted so that the mounting height can be adjusted. That is, the exhaust outlet pipe 82 is supported on the upper end side of the exhaust column 115 on the rear surface of the cylinder head 32 via the outlet pipe bracket 116 so that the position of the exhaust outlet pipe 82 can be adjusted in the vertical direction. The exhaust inlet inner diameter on the front end side of the tail pipe 84 is made larger than the outer diameter of the exhaust outlet on the rear end side of the exhaust outlet pipe 82, and the exhaust inlet of the tail pipe 84 is fitted into the exhaust outlet of the exhaust outlet pipe 82 in a loose fit. Then, outside air is sucked into the exhaust inlet of the tail pipe 84 through the gap between the exhaust outlet of the exhaust outlet pipe 82 and the exhaust inlet of the tail pipe 84 (see FIG. 11).

  As shown in FIG. 12, an engine suspension hook hole 115a is formed on the upper end side of the exhaust column 115, and a front hook bracket 118 for engine suspension on the front side of the cylinder head 32 and a rear hook bracket for engine suspension. The exhaust strut 115 also serves as a hoist or chain block, and the diesel engine 20 is suspended from a cargo handling suspension (not shown) so that the diesel engine 20 can be assembled to or removed from the traveling machine body 1.

  In addition, as shown in FIGS. 4, 5, and 9, a front support bracket 85 is welded and fixed to the front end side of the crank-shaped tail pipe 84 in a side view, and the front support bracket 85 is attached to the pipe base 86 on the left side of the left engine room column 71. 85 is bolted so that the mounting position can be adjusted. The front end side of the tail pipe 84 is supported by the pipe base 86 via the front support bracket 85 so that the position of the tail pipe 84 can be adjusted in the left-right direction. Further, a rear support bracket 87 is fixed by welding to the rear end side (exhaust outlet) of the tail pipe 84 that is opened rearward, and the rear support bracket 87 is bolted to the upper surface side of the traveling machine body 1 so that the traveling machine body 1 is leveled. The exhaust outlet end portion of the tail pipe 84 is supported at the frame height.

  The exhaust gas purification case 50 above the diesel engine 20 is supported substantially at the same height as the exhaust inlet side of the tail pipe 84, and the frame height of the traveling machine body 1 on which the threshing device 5 or the Glen tank 7 is placed is substantially the same. The exhaust outlet side of the tail pipe 84 is supported at the same height so that the rear end edge of the pulley cover plate 88 is disposed close to the vertically extending portion in the middle of the crank shape of the tail pipe 84, and the threshing device 5 The outside of the tang pulley 89 for inputting the driving force of the diesel engine 20 is surrounded by the tail pipe 84 and the pulley cover plate 88, and the outside air warmed by the exhaust heat of the tail pipe 84 is selected as the tang fan 53. It is comprised so that it may be attracted to.

  Next, a modification of the exhaust outlet pipe 82 support structure will be described with reference to FIGS. Instead of the exhaust strut 115 (see FIG. 12) which also serves as the engine hanging rear hook metal fitting, an engine hanging rear hook metal fitting 211 is erected on the rear surface side of the cylinder head 32 as shown in FIGS. The diesel engine 20 can be suspended from a cargo handling suspension device (not shown) such as a hoist or chain block by the engine hanging front hook fitting 118 and the engine hanging rear hook fitting 211. .

  Further, as shown in FIGS. 15 to 17, an exhaust pipe support portion 117 a is integrally formed on the upper end side of the auxiliary support leg 117 fastened to the rear support leg 114, and the outlet pipe bracket 116 is welded to the exhaust outlet pipe 82. The outlet pipe bracket 116 is attached to the exhaust pipe support portion 117a, and the bolt 212 is fastened so that the height can be adjusted. Further, the exhaust gas outlet pipe 50a of the exhaust gas purification case 50 is fitted with the inlet side of the exhaust outlet pipe 82, and the exhaust outlet pipe 82 is fastened with the bolt 213 to the exhaust gas outlet pipe 50a. The exhaust outlet pipe 82 is supported on the upper end side of the exhaust column 115 on the rear surface of the cylinder head 32 via an outlet pipe bracket 116 so that the position of the exhaust outlet pipe 82 can be adjusted in the vertical direction.

1 traveling machine body 3 reaping device 5 threshing device 10b driver's seat 14 working clutch lever (operating lever)
15 Side column 16 Partition plate (heat shield plate)
16a Interior space of partition plate 20 Diesel engine 43 Engine room 44 Engine room cover 50 Exhaust gas purification case 77 Ventilation fan 79 Key switch

Claims (4)

A reaping device, a threshing device, a traveling machine body in which the reaping device and the threshing device are installed, an engine installed in an engine room on the traveling machine body, and an exhaust gas purification case for processing exhaust gas of the engine. In the combine,
A driver's seat is supported on the upper surface side of the engine room, a side column is disposed inward of the engine room, and the exhaust gas purification case is disposed on the engine upper surface side in the engine room below the driver seat. A combine having a structure in which a part of the exhaust gas purification case is wrapped on the side column in plan view.   A heat shield plate that partitions an operation lever installation portion on the upper side of the side column and the exhaust gas purification case; an engine room cover that forms the engine room; and the heat shield plate on one end side of the engine room cover The combine according to claim 1, wherein the body is provided continuously.   The combine according to claim 2, wherein the heat shield plate is formed in a double structure, and the air in the internal space of the heat shield plate is ventilated by the cooling wind of the engine. .   An electric ventilation fan for ventilating the internal space of the heat shield plate having a double structure is provided, and the electric ventilation fan is configured to be able to stop with a delay after a certain time with respect to the key switch turning operation. The combine according to claim 2.

Images