JP2013000001A - Harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting machine having a driving seat arranged above an engine hood which is configured such that an exhaust emission control device is provided above a diesel engine within the engine hood while avoiding the overlap of the exhaust emission control device with the driving seat in the vertical direction of the machine body without enlargement of an operation portion.SOLUTION: The exhaust emission control device 50 configured to introduce exhaust gas of the diesel engine 21 and perform purification treatment of the exhaust gas is provided within the engine hood 22 in a layout such that the whole body of the exhaust emission control device 50 is biased toward a harvesting portion relative to the driving seat 12, and a part of the exhaust emission control device 50 in a horizontal direction of the machine body is protruded toward the harvesting portion side from a harvesting portion-side lateral wall 11c of the operation portion.

Description

  The present invention includes an engine bonnet in which a diesel engine is installed, a driving unit having a driving seat disposed above the engine bonnet, and is connected to a traveling machine body so as to be movable up and down on a lateral side of the driving unit. The present invention relates to a harvesting machine having a reaping part.

  Conventionally, as shown in Patent Document 1, for example, there has been a combine that includes an engine bonnet that houses an engine and in which a driver's seat is disposed above the engine bonnet.

JP 2010-213605 A

  In a harvester equipped with a diesel engine, if an exhaust gas purification device is installed in the engine bonnet to reduce particulate matter contained in the exhaust gas of the diesel engine, the heat dissipation of the diesel engine is used for temperature management of the exhaust gas purification device. This is advantageous, for example, because the piping connecting the exhaust gas purification device and the diesel engine can be shortened. However, if the exhaust gas purification device and the driver's seat overlap in the vertical direction of the fuselage, the driver's seat will be placed at a higher height. Design changes are likely to be required. In addition, when the position of the driver's seat is changed in the forward direction of the aircraft or in the lateral direction of the aircraft so as to avoid overlapping of the exhaust gas purification device and the driver's seat in the vertical direction of the aircraft, The size in the lateral direction of the aircraft tends to increase.

  An object of the present invention is to provide a harvester capable of providing an exhaust gas purification device in an engine bonnet while avoiding overlapping of the exhaust gas purification device and a driver's seat in the vertical direction of the vehicle body without increasing the size of the operation unit. is there.

The first aspect of the invention includes an engine bonnet in which a diesel engine is installed, a driving unit having a driving seat disposed above the engine bonnet, and can be lifted and lowered to a traveling body at a lateral side of the driving unit. In a harvesting machine with connected cutting parts,
An exhaust gas purifying apparatus that introduces exhaust gas from the diesel engine and performs exhaust gas purification processing, the exhaust gas purifying apparatus as a whole is biased toward the cutting portion with respect to the driver seat, and A part in the direction is provided in the engine bonnet so as to protrude from the side wall on the cutting unit side of the driving unit to the cutting unit side.

  According to the configuration of the first aspect of the present invention, a part of the exhaust gas purifying device in the lateral direction of the fuselage protrudes from the cut portion side lateral wall of the driving unit to the cutting unit side, so that the entire exhaust gas purifying device cuts away from the driving seat. The exhaust gas purifying device can be provided in the engine bonnet with an arrangement that is biased toward the part side. Therefore, it is possible to eliminate the need to change the position of the driver seat in the forward direction of the aircraft or in the lateral direction of the aircraft while avoiding the overlapping of the driver seat and the exhaust gas purification device in the vertical direction of the aircraft.

  Therefore, the harvesting machine that can purify the exhaust gas by providing the exhaust gas purification device in an advantageous state such as shortening the piping connecting the exhaust gas purification device and the diesel engine as much as possible overlaps the driver seat and the exhaust gas purification device in the vertical direction Avoids and suppresses the design change of the driving part, such as increasing the height of the driving panel and avoids the cost, and reduces the size of the driving part by changing the position of the driver's seat. be able to.

  According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the exhaust gas purifying device is disposed above the diesel engine.

  According to the configuration of the second aspect of the invention, the exhaust gas purifying device can be positioned more inside the engine bonnet, and the surface area of the exhaust gas purifying device that makes good contact with the engine cooling air flowing in the engine bonnet increases. The engine cooling air can be effectively used for cooling the exhaust gas purification device.

  According to the third aspect of the present invention, in the configuration of the first or second aspect of the present invention, the engine cooling air that has flowed out from the engine bonnet to the cutting portion side is directed toward the portion that protrudes toward the cutting portion side of the exhaust gas purification device. A flow guide is provided.

  According to the configuration of the third aspect of the invention, the engine cooling air that flows out from the inside of the engine bonnet to the cutting portion side is guided by the flow guide to a part of the exhaust gas purification device that tends to protrude to the cutting portion side and is difficult to touch the engine cooling air. It can be made to flow and to make good contact.

  Therefore, the engine cooling is used for temperature control of the exhaust gas purification device, such as preventing overheating of the exhaust gas purification device by a simple measure that only provides a flow guide while projecting a part of the exhaust gas purification device to the cutting part side. Wind can be used.

  According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects of the present invention, a sensor for controlling the exhaust gas purification device is provided at a portion protruding to the cutting portion side of the exhaust gas purification device. .

  According to the configuration of the fourth aspect of the present invention, even when the sensor is arranged at a higher arrangement height than the exhaust gas purification device, the engine bonnet top plate portion is arranged by installing the sensor at a portion protruding to the cut portion side of the exhaust gas purification device. The sensor can be mounted on the exhaust gas purification device without increasing the height for the sensor.

  Accordingly, it is possible to reduce the height of the top plate portion and reduce the size of the driving portion while mounting the sensor on the exhaust gas purification device and shortening the link distance between the sensor and the exhaust gas purification device.

According to a fifth aspect of the present invention, in the configuration of the fourth aspect of the invention, the engine bonnet is supported by the traveling machine body so as to be swingable and openable.
A sensor cover that covers the upper side of the sensor is extended from the engine bonnet toward the cutting part side and fixed to the engine bonnet; and a downward closing posture on the extended end side of the fixed cover part; An open / close cover portion supported to be swingable open / closed in an ascending open posture is provided.

  According to the configuration of the fifth aspect of the invention, by switching the open / close cover portion to the lowered closed position, the open / close cover portion is as close as possible to the sensor and covers the sensor when the engine bonnet is closed, so that the sensor is reliably protected. Can do. On the other hand, when opening the engine bonnet, the open / close cover part is switched to the upwardly open position to separate the open / close cover part from the sensor and avoid contact of the open / close cover part with the sensor due to the swinging movement of the engine bonnet. It becomes easy to do.

  Therefore, normally, when opening and closing the engine bonnet, such as when inspecting the prime mover, while the cover is close to the sensor as much as possible and the sensor is properly protected by the sensor cover, the opening / closing cover is unlikely to contact the sensor. Sensor damage or breakage can be prevented.

It is a right view which shows the whole harvesting machine. It is a left view which shows the whole harvesting machine. It is a top view which shows the whole harvesting machine. It is a right view which shows an operation part and a drive part. It is a left view which shows a drive part. It is a top view which shows a driving | operation part and a drive part. It is a front view in the engine bonnet longitudinal cross-section state of a driving part and a driving part. It is a front view in the engine bonnet longitudinal cross-sectional state of a drive part. It is a top view which shows a drive part. It is a left view which shows a drive part. It is a perspective view in the decomposition state which shows the support structure of an exhaust gas purification apparatus. It is a perspective view which shows an engine bonnet and a side operation panel. It is a vertical rear view which shows the drive part provided with the 1st another implementation structure. It is a top view which shows the drive part provided with the 2nd another implementation structure. It is explanatory drawing which shows the sensor cover of the drive part provided with the 3rd another implementation structure. It is a schematic front view which shows the harvester provided with the 4th another implementation structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a right side view showing an entire harvesting machine according to an embodiment of the present invention. FIG. 2 is a left side view showing the whole harvesting machine according to the embodiment of the present invention. FIG. 3 is a plan view showing the entire harvesting machine according to the embodiment of the present invention. As shown in these drawings, the harvester according to the embodiment of the present invention is configured to be self-propelled by a pair of left and right crawler traveling devices 1, 1 and is equipped with a driving cabin 11. , And a driving unit 20 provided with a diesel engine 21 located below the driver's seat 12 on the lateral end side of the front end of the body frame 2, and a driving unit 10 on the body frame 2 of the traveling unit. The reaping unit 3 connected laterally, the threshing device 4 disposed on the rear side of the body frame 2 of the traveling machine body and arranged behind the cutting part 3, and the threshing of the rear part side of the body frame 2 of the traveling machine body It comprises a grain tank 5 arranged and provided on the side of the device 4, and harvests rice, wheat and the like.

  The reaping part 3 includes a reaping part frame 3a that extends from the body frame 2 so as to be swingable up and down in the forward direction of the body. The reaping part frame 3a is oscillated by the elevating cylinder 6 so that the reaping part 3 Are moved up and down into a lowering working state in which the weeding tools 3b arranged side by side in the horizontal direction of the machine body are lowered near the ground, and a non-working state in which the weeding tools 3b are raised higher from the ground. By moving the traveling machine body in the descending working state with the mowing unit 3, the mowing unit 3 introduces the planted cereal to be harvested into the rear pulling device 3 c by the weeding tool 3 b, and causes the processing to occur. The planted culm to be raised and cut is trimmed by the clipper-shaped trimming device 3d, and the trimmed culm is conveyed backward by the feeding device 3e and supplied to the threshing feed chain 4a of the threshing device 4. The threshing device 4 feeds the tip side to the handling room and threshs it while holding the stock side of the harvested cereal meal supplied by the supply device 3e in the rearward direction of the traveling machine body by the threshing feed chain 4a. The grain tank 5 stores the threshed grains sent from the threshing device 4 and carries the stored threshed grains by an auger 7 formed of a screw conveyor.

The driving unit 10 will be described.
As shown in FIGS. 1, 2, 3, 4, and 6, the driving unit 10 includes a driving cabin 11, a driving seat 12, a front driving panel 13, and a driving cabin that are provided in the driving cabin 11 side by side. 11 is provided with a side operation panel 14 that is disposed on the side of the cutting portion side of the driver seat 12.

  As shown in FIGS. 4 and 7, the driver's seat 12 is disposed at an upper position on the front side of the body of the engine bonnet 22, and is located below the driver's seat 12 in the top plate portion 30 of the engine bonnet 22. It is attached to the portion 31 (see FIG. 12) via the seat support mechanism 15. The seat support mechanism 15 includes a pair of left and right support rails 15a and 15a connected to the seat lower portion 31 by mounting bolt holes 31a (see FIG. 12) provided in the seat lower portion 31 of the top plate portion 30. The driver seat 12 is supported by the rails 15a and 15a so as to be slidably adjustable in the longitudinal direction of the fuselage, and the mounting position of the driver seat 12 can be changed in the longitudinal direction of the fuselage.

  As shown in FIGS. 6 and 12, the side operation panel 14 is a panel located over the upper portion of the top side 30 of the engine hood 22 at the inner side end of the machine body and the inner side of the front operation panel 13. The top plate 14a, the horizontal vertical plate 14b on the driver seat side whose upper end is connected to the horizontal end of the panel top plate 14a on the driver seat side, and the side of the panel top plate 14a on the cutting part side (the side opposite to the driver seat side) It is configured to include a horizontal vertical plate 14c on the side of the cutting portion whose upper end continues to the end. The side operation panel 14 is provided with a shift lever 16 for shifting the travel transmission (not shown) and a cutting clutch lever 17 for driving and stopping the cutting unit 3 so as to be swingable.

  The panel top plate 14a and the horizontal vertical plate 14b on the driver's seat side are provided at an upper portion of the front side of the body of the upper portion 32 of the purification device in the top plate portion 30 of the engine bonnet 22 and an inner side end of the front side of the front operation panel 13. It is provided over. The distance between the horizontal vertical plate 14b on the driver's seat side and the driver's seat 12 in the horizontal direction of the airframe is larger than the distance between the purifier upper portion 32 and the driver's seat 12 in the horizontal direction of the airframe. The horizontal vertical plate 14b on the driver seat side is biased to the side opposite to the driver seat side with respect to the horizontal end 32a on the driver seat side of the purification device upper portion 32 in the top plate portion 30.

The driving unit 20 will be described.
As shown in FIGS. 7, 8, and 9, the prime mover 20 is provided with a diesel engine 21 (hereinafter, abbreviated as “engine 21”) housed in an engine bonnet 22.

  The engine bonnet 22 includes a front wall portion 22 a (see FIG. 12) located on the front side of the body of the engine 21, a rear wall portion located on the rear side of the body of the engine 21, and a top plate portion 30 located above the engine 21. It is prepared.

  As shown in FIGS. 1, 4, 5, 7, and 8, the engine 21 is mounted on the body frame 2 in a mounting posture in which the crankshaft direction is the lateral direction of the body. An engine cooling radiator 24 connected to the engine 21 via a cooling water circulation pipe 24a is supported by the body frame 2 between the engine 21 and an intake wall 23 provided at the lateral outer end of the engine bonnet 22. The cooling fan 25 is provided between the radiator 24 and the engine 21 so as to be rotatably supported by the engine 21 so that the engine 21 is cooled.

  That is, the intake wall 23 includes a wall frame 23a supported by the front side wall portion 22a and the rear wall side lateral end portion of the engine bonnet 22, and an intake plate that is also used as a dust remover stretched on the wall frame 23a. 23b. The cooling fan 25 is driven to rotate by the engine 21 and sucks and blows air to suck the air outside the engine bonnet 22 into the engine bonnet 22 through a number of intake holes provided in the intake plate 23 to cool the engine. Wind is generated, and this engine cooling air is caused to flow in the engine bonnet 22 from the lateral side of the fuselage to the lateral side of the fuselage, and the engine cooling air is supplied to the radiator 24 to generate the engine cooling air and the engine cooling water. Engine cooling water is cooled by heat exchange, and engine cooling air that has passed through the radiator 24 is supplied to the engine 21.

  A wall frame 23a constituting the intake wall 23 is supported via a hinge 27 (see FIG. 1) on a fixed frame 26 fixed to the front wall portion 22a of the engine bonnet 22 and the fuselage lateral outer end portion of the rear wall portion. The intake wall 23 can swing and open around the vertical axis of the fuselage provided in the hinge 27. By swinging and opening to the laterally outer side of the fuselage, the interior of the engine bonnet 22 faces the laterally laterally outer side. Open.

  As shown in FIGS. 4 to 9, a pre-air cleaner 40 is provided near the rear of the ceiling portion 11 a of the driving cabin 11 while being supported by a support portion 11 b provided in the ceiling portion 11 a, and is formed at the rear of the driver seat 12. An air cleaner 42 is provided in the chamber 41, a supercharger 43 is provided in the vicinity of the front side of the fuselage inside the engine bonnet 22, and an intercooler 44 is provided between the intake wall 23 and the radiator 24 inside the engine bonnet 22. Thus, the combustion air is supplied to the engine 21.

  That is, the exhaust port of the pre-air cleaner 40 and the intake port 42a of the air cleaner 42 are connected via a cleaner suction pipe 45 that passes through a pipe hole provided in the upper structure 41a that forms the air cleaner chamber 41. An exhaust port 42 b of the air cleaner 42 and a suction port of the compression unit 43 a in the supercharger 43 are connected via a supercharger suction pipe 47 connected to a connection cylinder 46 provided in the top plate part 30 forming the air cleaner chamber 41. Connected. The discharge port of the compression unit 43a and the introduction port 44a of the intercooler 44 in the supercharger 43 are connected via a supply pipe 48, and the delivery port 44b of the intercooler 44 and the intake manifold 28 of the engine 21 are connected to an engine suction pipe 49. Connected through. The suction port 43 c of the turbine unit 43 b in the supercharger 43 is connected to the exhaust manifold 29 of the engine 21.

  That is, the supercharger 43 is driven by the exhaust gas discharged from the engine 21, and the air outside the engine bonnet 22 is sucked into the pre-air cleaner 40 to gradually dust, and the air after this slow dust is passed through the cleaner suction pipe 45. The air is then sucked into the air cleaner 42 and dust is removed again. The air after dust removal is sucked into the supercharger 43 via the supercharger suction pipe 47 to generate compressed air, and this compressed air is supplied to the supply pipe 48. The cooling air is sent to the intercooler 44 through the cooling process, and the cooled compressed air is supplied to the engine 21 through the engine suction pipe 49 as combustion air.

  As shown in FIGS. 4, 6, and 8, the air cleaner chamber 41 includes an upper structure 41 a that is erected upward from the body of the engine bonnet 22 at a position located behind the driver seat 12 and a top plate portion of the engine bonnet 22. 30 and an air cleaner lower portion 33 located below the air cleaner 42. An air cleaner lower portion 33 of the top plate portion 30 is a floor body of the air cleaner chamber 41. The upper structure 41a is configured to include a fuselage lateral outer wall 41b formed integrally with the intake wall 23 of the engine bonnet 22, and the fuselage lateral outer wall 41b is sucked into the engine bonnet 22 around the vertical axis of the fuselage. The air cleaner chamber 41 is opened and closed by swinging and opening integrally with the wall 23.

  As shown in FIGS. 4, 6, 8, and 12, an air cleaner lower portion 33 in the top plate portion 30 of the engine bonnet 22 is formed so as to be positioned horizontally or substantially horizontally, and the air cleaner support portion 33a. And an inclined lateral end portion 33b extending obliquely from the lateral lateral end of the aircraft to the lateral direction and downward of the aircraft, and provided below the central portion of the air cleaner 22 in the lateral direction of the aircraft. The air cleaner 42 is supported by the air cleaner support portion 33a by tightening and connecting the attachment portion 42c to the air cleaner support portion 33a by a connecting bolt 42d attached to an attachment hole 33c provided in the air cleaner support portion 33a. The air cleaner 42 includes an overflow cylinder 42e that extends downward from the lateral outer edge of the fuselage, and when excess air exceeding the combustion for the engine 21 is generated in the inflowed air, the excess air is supplied. Outflow from the overflow cylinder 42e. The air cleaner 42 is supported by the air cleaner support portion 33a in an attachment posture in which the overflow cylinder 42e is positioned on the inclined horizontal end portion 33b in the air cleaner lower portion 33 along the inclined horizontal end portion 33b. An extended end portion of the inclined lateral end portion 33 b of the air cleaner lower portion 33 is connected to a longitudinal body-facing frame portion 26 a provided with a fixed frame 26 provided at the laterally outer end portion of the engine bonnet 22.

  As shown in FIGS. 5 to 9, an exhaust gas purifying device 50 is provided inside the engine bonnet 22 so that the exhaust gas discharged from the engine 21 is purified and discharged outside the machine body.

  That is, as shown in FIGS. 5 to 10, the exhaust gas purification device 50 is entirely biased toward the cutting portion with respect to the driver seat 12, and a part of the exhaust gas purification device 50 in the lateral direction of the fuselage is an engine bonnet. 22 projecting from the opening 22b located at the inner end of the machine body to the cutting unit side, the projecting unit 10 protrudes from the cutting unit side lateral wall 11c of the driving cabin 11 as the cutting unit side lateral wall of the driving unit 10 to the cutting unit side. The engine body 21 is located above the machine body side inner side portion of the engine 21 in a state where the machine body front side part of the exhaust gas purifying device 50 is located below the side operation panel 14. The exhaust gas purification device 50 is formed side by side in a direction intersecting the crankshaft direction A of the engine 21 (see FIGS. 7 and 11) above the engine 21 by a pair of support members 61 and 62 connected to the front and rear sides of the engine 21. The engine 21 is connected to the pair of support portions 61a and 62a. The exhaust gas purification device 50 includes an exhaust gas introduction port 51 and an exhaust gas discharge port 52 provided at both ends in the longitudinal direction of the exhaust gas purification device 50, and the exhaust gas introduction port 51 and the exhaust gas discharge port 52 are separated from the engine 21 in the vertical direction of the body. The exhaust gas purifying device 50 is connected to the pair of support portions 61a and 62a so that the longitudinal direction of the exhaust gas purifying device 50 intersects with the crankshaft direction of the engine 21 so as to be located at a detached position.

  The exhaust gas introduction port 51 of the exhaust gas purification device 50 is connected to an engine side exhaust pipe 53 which is an exhaust pipe extending from the exhaust port of the turbine section 43 b in the supercharger 43. An exhaust gas discharge port 52 of the exhaust gas purification device 50 is communicated with an exhaust pipe 55 on the airframe side through an exhaust pipe 54 on the purification device side extending from the exhaust gas discharge port 52.

  The exhaust pipe 54 on the purification device side includes a base end side portion 54a that extends horizontally or substantially horizontally from the exhaust gas discharge port 52 of the exhaust gas purification device 50 toward the vehicle body inner side (the cutting portion side), and the base end side portion. A bent portion extending from the extending end of 54a in a laterally outward direction of the fuselage and in a downward and rearward direction of the fuselage so that the extended end portion communicates with the inlet side of the ejector exhaust pipe 56 constituting the exhaust pipe 55 on the fuselage side. And a distal end side portion 54b. The exhaust pipe 55 on the airframe side is provided with an ejector exhaust pipe 56 that faces the exhaust pipe 55 that is fitted on the extended end of the exhaust pipe 55 on the purifier side, and an outlet side of the ejector exhaust pipe 56 on the inlet side. The exhaust pipe main body 57 is connected. The exhaust pipe main body 57 is formed in a bent shape as viewed from the side of the fuselage so that the front end side portion communicating with the outlet side of the ejector exhaust pipe 56 is directed upward and downward and the rear end side portion is directed forward and backward. The exhaust pipe main body 57 includes a cover 58 that covers the upper portion of the rear end side portion so that no waste scraps are placed on the rear end side portion of the front and rear direction of the fuselage, and exhaust gas discharged from the outlet 57a of the exhaust pipe main body 57 below the fuselage. An inclined guide 59 is provided to guide the fluid to flow in the direction. The exhaust pipe 55 on the airframe side is piped so that the outlet 57a of the exhaust pipe main body 57 is located between the rear end portions of the left and right crawler travel devices 1 and 1 below the airframe frame 2.

  The exhaust gas purifying device 50 purifies the exhaust gas so that diesel particulates contained in the exhaust gas introduced from the exhaust gas inlet 51 are reduced by a collection filter (not shown), and the exhaust gas after the purification treatment is discharged to the exhaust gas outlet. 52.

  That is, the exhaust gas discharged from the engine 21 and passing through the turbo part 43b of the supercharger 43 is introduced into the exhaust gas purification device 50 from the exhaust gas inlet 51 to perform a purification process for reducing diesel particulates, and the purification process is finished. The exhaust gas discharged from the exhaust gas discharge port 52 is caused to flow into the exhaust pipe 55 on the airframe side through the exhaust pipe 54 on the purification device side, and guided to the rear side of the airframe by the exhaust pipe 55 on the airframe side to guide the left and right crawler travel devices 1. , 1 are discharged from the exhaust pipe 55 between the rear ends. As the exhaust gas is sent from the exhaust pipe 54 on the purification apparatus side to the ejector exhaust pipe 56, the ejector exhaust pipe 56 removes the air outside the ejector exhaust pipe 56 from the gap between the ejector exhaust pipe 56 and the exhaust pipe 54 on the purification apparatus side. The exhaust gas is sucked into the exhaust gas and mixed with the exhaust gas from the exhaust pipe 55 on the purification device side to cool the exhaust gas.

  The exhaust gas purifying device 50 includes a self-cleaning mechanism (not shown) that burns and regenerates with a heater or the like, and a cleaning control means (not shown) that operates the self-cleaning mechanism when the collection filter is clogged and the purification function is lowered. ), And a sensor 60 (see FIG. 7) provided at a portion protruding to the cut portion side of the exhaust gas purifying device 50. The sensor 60 is provided by being arranged at a higher arrangement height than the upper end of the exhaust gas purification device 50. The sensor 60 detects the clogging of the collection filter based on the pressure difference between the exhaust gas flowing upstream from the collection filter and the exhaust gas flowing downstream from the collection filter. The cleaning control means executes control to output a cleaning command to operate the self-cleaning mechanism.

  As shown in FIGS. 8, 10, and 11, the pair of support members 61 and 62 that support the exhaust gas purifying device 50 on the engine 21 include the pair of support portions 61 a and 62 a on the front and rear sides of the body with respect to the crankshaft 21 a of the engine 21. Are distributed and formed. Of the pair of support members 61, 62, the support member 61 that forms the support portion 61 a located on the front side of the machine body with respect to the crankshaft 21 a is an exhaust gas that extends from the exhaust port of the turbine portion 43 b in the turbocharger 43. A connecting flange 63 provided on the exhaust pipe 53 on the engine side, which is a pipe, and an extension support portion 64 integrally formed on the connecting flange 63 in a state of extending from the connecting flange 63 to the engine side (the rear side of the machine body). The extended support portion 64 is provided with a support portion 61a in which an intermediate portion in the longitudinal direction is detachably connected by a connecting bolt 65. The support portion 61a is formed to have a long shape along the crankshaft direction A of the engine 21, and is connected over a wide range in the lateral direction of the body of the exhaust gas purification device 50. The support portion 61a is connected to the extension support portion 64 by a connecting bolt 65 in a horizontal or substantially horizontal posture, and rises upward from the belt plate portion 61b to the flange portion 50a of the exhaust gas purification device 50. A vertical plate portion 61c connected by a connecting bolt 66 is provided.

  Of the pair of support members 61, 62, the support member 62 forming the support portion 62 a located on the rear side of the machine body with respect to the crankshaft 21 a is one end side in the crankshaft direction A of the engine 21. A flat plate body vertical leg 68 whose lower end is detachably connected to the wall portion positioned by a connecting bolt 67, and the other end side in the crankshaft direction A of the engine 21 (on the lateral side of the vehicle body). It comprises a round pipe body up-and-down leg portion 70 whose lower end side is detachably connected to the block portion 21c located by a connecting bolt 69, and a support portion 62a connected to the upper end sides of both leg portions 68 and 70. It is. The support portion 62a is a sheet metal member connected to a base portion 62b made of a round pipe integrally formed with one of the aircraft body up and down leg portions 70 and a base 62c formed by attaching a sheet metal member to the base portion 62b. And a connecting body 62d. The base portion 62 b is connected to the machine body vertical leg 68 by a connecting bolt 71. The support portion 62a is formed to have a long shape along the crankshaft direction A of the engine 21, and is connected over a wide range in the lateral direction of the body of the exhaust gas purification device 50. In the connecting body 62d, a strip plate portion 62e that is connected to the pedestal 62c in a horizontal or substantially horizontal posture, rises upward from the strip plate portion 62e, and is connected to the flange portion 50b of the exhaust gas purification device 50 by a connecting bolt 66. And a vertical plate portion 62f. The flat body-facing legs 68 are provided with lifting holes 68 a so as to be used for lifting and supporting the engine 21.

  An operation cable 85 shown in FIG. 11 is a blade angle operation unit provided in the cooling fan 25 so as to change the direction of the wind generated by the cooling fan 25 between the intake direction and the exhaust direction by changing the blade angle of the cooling fan 25. (Not shown) and an electric motor (not shown) for remotely operating the blade angle operation unit are interlocked. The operation cable 85 is disposed through the lower side of the support portion 62a of the support member 62 so as to utilize the support member 62 as a support means for avoiding contact of the operation cable 85 with the exhaust gas purification device 50.

  FIG. 12 is a perspective view showing the top plate portion 30 of the engine bonnet 22. As shown in this figure and FIGS. 6, 7, and 8, between the purification device upper portion 32 located above the exhaust gas purification device 50 in the top plate portion 30 and the air cleaner lower portion 33 located below the air cleaner 42. Further, a step H1 is formed in which the arrangement height of the purification device upper portion 32 is higher than the arrangement height of the air cleaner lower portion 33, and between the purification device upper portion 32 and the seat lower portion 31 located below the driver seat 12. A step H <b> 2 is formed in which the arrangement height of the purification device upper portion 32 is higher than the arrangement height of the seat lower portion 31, and the arrangement height of the air cleaner lower portion 32 is between the air cleaner lower portion 33 and the seat lower portion 31. The top plate 30 is formed in a stepped shape in which a step H3 higher than the arrangement height of the seat lower portion 31 is formed. That is, in the stepped shape of the top plate portion 30, the arrangement height of the purification device upper portion 32 is higher than the arrangement height of the air cleaner lower portion 33, and the arrangement height of the air cleaner lower portion 33 is higher than the arrangement height of the seat lower portion 31. It has a three-stage shape that increases.

  A vertical plate provided on the top plate 30 so as to connect the lateral end 32a on the driver's seat side of the purifier upper portion 32 and the lateral end of the air cleaner lower portion 33 and the lower side of the body 31 on the side of the vehicle body (reaching portion side). The vertical plate portion 35 provided on the top plate portion 30 so as to be connected to the airframe front side end of the portion 34 and the air cleaner lower portion 33 and the airframe rear side end of the seat lower portion 31 is composed of the seat lower portion 31 and the air cleaner lower portion 33. Is formed in such a manner that it is a vertical orientation that is connected at right angles or almost right angles to the seat lower portion 31 and the air cleaner lower portion 33.

  The positional relationship between the side operation panel 14 and the purification device upper portion 32 in the top plate portion 30 of the engine bonnet 22 is such that the panel top plate 14a of the side operation panel 14 is positioned higher than the arrangement height of the purification device upper portion 32. Then, the horizontal plate 14b on the driver's seat side of the side operation panel 14 is placed on the top plate so that the horizontal end 32a on the driver's seat side of the purifier upper part 32 is biased to the opposite side to the driver seat side. A portion 30 is formed.

  As shown in FIG. 3, the engine bonnet 22 is connected to a support portion 76 of the traveling machine body via a hinge means 75 that is provided on the lateral inner side of the machine body at the rear end side of the engine bonnet. It is pivotally supported around an up and down axis P so as to be swingable and openable.

  The engine bonnet 22 indicated by a broken line in FIG. 3 and the operation cabin 11 indicated by a solid line show the engine bonnet 22 and the operation cabin 11 in a closed state in which the lateral sides of the driving part 20 and the cutting part 3 are closed. The engine bonnet 22 and the operation cabin 11 indicated by a two-dot chain line in FIG. 3 indicate the engine bonnet 22 and the operation cabin 11 in an open state in which the lateral side of the driving unit 20 and the cutting unit 3 on the operation unit side is opened. As shown in this figure, the engine bonnet 22 is swung to the outer side of the fuselage around the vertical axis P of the fuselage, so that the engine 21 and the exhaust gas are opened by the opening 22b located at the inner lateral end of the engine bonnet 22. It passes through installation places, such as purification apparatus 50, and it will be in an open state by the front end side of engine bonnet 22 projecting to the fuselage side outside. At this time, the grain tank 5 is swingably opened around the axis X of the vertical screw conveyor 7a constituting the auger 5 so as not to be an obstacle for swinging the engine bonnet 22 open. Further, the supercharger suction pipe 47 that connects the air cleaner 42 and the supercharger 43 is removed from the connection tube 46 provided in the air cleaner lower portion 33 of the top plate 30. When the engine bonnet 22 is swingably opened and closed, the operation cabin 11, the front operation panel 13, the side operation panel 14, the air cleaner chamber 41, and the like constituting the operation unit 10 swing and open integrally with the engine bonnet 22.

  FIG. 13 is a longitudinal rear view showing the prime mover 20 in the harvesting machine having the first different embodiment structure. As shown in this figure, in the prime mover 20 in the harvesting machine having the first different implementation structure, the lateral end 32a on the driver seat side of the purification device upper part 32 in the top plate part 30 and the side of the fuselage side of the air cleaner lower part 33 are shown. The vertical plate portion 34 that connects the inner side (the mowing portion side) with the horizontal end is formed so that the longitudinal cross-sectional shape when viewed from the front-rear direction of the fuselage is inclined so that the upper end side is positioned on the purifier upper portion side. It is. Below the vertical plate portion 34, a cooling air guide plate 77 supported in an inclined posture so as to be positioned in parallel or substantially parallel to the vertical plate portion 34 is provided. The cooling air guide plate 77 is supported by a support member 78 attached to the engine 21 so as to support the exhaust gas purification device 50.

  In other words, the engine cooling air that flows in the engine hood 22 sideways toward the exhaust gas purification device 50 side is guided by the inclination of the cooling air guide plate 77 and the vertical plate portion 34, and the purification device upper portion 32. The exhaust gas purifier 50 flows smoothly along the purifier upper portion 32 at the end in the lateral direction of the airframe, and flows together in the upper part of the exhaust gas purifier 50 without being dispersed in a wide range. It is constructed so that it cools by touching the upper part well.

  FIG. 14 is a plan view showing the prime mover 20 in the harvesting machine having the second alternative embodiment structure. As shown in this figure, in the prime mover 20 having the second alternative embodiment structure, the flow guide 80 is installed at the engine bonnet 22 at the front part of the body of the exhaust gas purifying device 50 protruding from the engine bonnet 22 toward the cutting part. 22 is provided in a state supported by 22.

  That is, the engine cooling air that has flowed out from the engine bonnet 22 to the cutting portion side is guided by the flow guide 80 and flows toward the exhaust gas purification device 50 to be cooled, and the exhaust gas purification device 50 has an excessive temperature. Engine cooling air is used to prevent the rise.

  FIG. 15 is a front view showing the prime mover 20 in the harvesting machine having the third different embodiment structure. As shown in this figure, the prime mover 20 having the third different implementation structure is configured so that the sensor cover 81 covers the upper side of the sensor 60 provided in the exhaust gas purification device 50.

  The sensor cover 81 includes a fixed cover portion 81a fixed to the engine bonnet 22 in a state of extending from the engine bonnet 22 toward the cutting portion side, and a fulcrum portion 81b provided on the extending end side of the fixed cover portion 81a. An open / close cover portion 81c is supported around the machine body longitudinal axis Z so as to be swingable and openable in a lowered closed position and a raised open position.

  As shown in FIG. 15, an operation guide 82 for opening and closing the opening / closing cover portion 81 c is disposed on the lower side of the opening of the engine bonnet 22 with respect to the sensor 60 and supported by the exhaust gas purification device 50. In 81c, the engine bonnet 22 is automatically switched between a descending closed position and an ascending open position when the engine bonnet 22 is swingably opened and closed.

  That is, as shown in FIG. 15A, when the engine bonnet 22 is in the closed state, the operation guide 82 is detached from the open / close cover portion 81c, and the open / close cover portion 81c is not subjected to the operation by the operation guide 82, and the fulcrum portion. The sensor 60 is lowered by a closing urging spring (not shown) provided at 81b and is received and supported by a stopper (not shown) provided at the fulcrum 81b to be in a lowered closed position. Cover and protect. As shown in FIG. 15B, when the engine bonnet 22 swings to the opening side, the open / close cover portion 81c moves together with the engine bonnet 22 to move the inclined opening operation start portion 82a of the operation guide 82 and Subsequently, it is brought into contact with the horizontal opening maintaining operation portion 82b, is pushed up by the operation guide 82, is opened to the upward opening posture against the closing biasing spring, and is largely separated upward from the sensor 60. In this separated state, the sensor 60 moves away from the sensor 60 in the bonnet moving direction. As shown in FIG. 15 (c), when the engine bonnet 22 is further swung to the opening side and the entire opening / closing cover part 81c is located at a position away from the sensor 60 in the engine bonnet moving direction, the opening / closing cover part 81c is After being removed from the operation guide 82 and not being pushed up by the operation guide 82, the closing biasing spring and the stopper positioned at the fulcrum portion 81b are brought into the lowered and closed posture. Thereafter, the opening / closing cover portion 81b is in the lowered and closed posture. It moves with the bonnet 22.

  As shown in FIGS. 15D and 15E, when the engine bonnet 22 swings toward the closing side, the open / close cover portion 81c moves together with the engine bonnet 22 to open the operation guide 82 with an inclined shape. It slides on the start portion 82c and the horizontal opening maintaining operation portion 82b following the start portion 82c, receives a push-up operation by the operation guide 82, and opens to a rising open posture against the closing biasing spring. The sensor 60 is greatly separated and moves above the sensor 60 in this separated state. As shown in FIG. 15A, when the engine bonnet 22 is in the closed state, the open / close cover portion 81c is detached from the operation guide 82 and is not subjected to the raising operation by the operation guide 82, and the closing bias located at the fulcrum portion 81b. A downward closed position is achieved by the spring and the stopper.

  FIG. 16: is a schematic front view which shows the harvester provided with the 4th another implementation structure. As shown in this figure, in the harvester having the fourth alternative embodiment structure, the exhaust gas after the purification process to reduce the diesel particulates in the exhaust gas purification device 50 is purified so as to purify the nitrogen oxides. A device 83 having a urea SCR system and a urea water tank and a urea water addition system so as to constitute the urea SCR system is disposed in an empty space between the inclined bottom of the grain tank 5 and the threshing device 4. Yes.

[Another Example]

(1) In the above-described embodiment, the example in which the exhaust gas purifying device 50 is provided at a position located above the diesel engine 21 in the engine bonnet is shown. You may implement by providing in the location which remove | deviated to the side.

(2) In the above-described embodiment, the example in which the exhaust gas purifying device 50 for reducing diesel particulates from the exhaust gas is provided above the engine in the engine bonnet 22 is provided. However, the exhaust gas purifying device for purifying the nitrogen oxides of the exhaust gas is provided. May be implemented.

(3) In the above-described embodiment, the opening / closing cover portion 81c is configured to be opened / closed by the operation guide 82. However, the opening / closing cover portion 81c may be configured to be opened / closed by human operation. .

(4) In the above-described embodiment, an example in which the top plate portion 30 of the engine bonnet 22 is formed in a stepped shape has been shown, but the flat surface extends over the purification device upper portion 32, the seat lower portion 31, and the air cleaner lower portion 33. Thus, it may be formed into a flat plate shape.

(5) In the above-described embodiment, an example in which the operation unit 11 includes the operation cabin 11 has been described. However, the operation unit 10 that does not include the operation cabin 11 may be provided.

  INDUSTRIAL APPLICABILITY The present invention can be used for a harvester that harvests various crops such as onions and carrots in addition to a combine.

DESCRIPTION OF SYMBOLS 3 Mowing part 10 Driving part 11c Mowing part side side wall 12 Driving seat 21 Diesel engine 22 Engine bonnet 50 Exhaust gas purification device 60 Sensor 80 Flow guide 81 Sensor cover 81a Fixed cover part 81c Opening and closing cover part

Claims (5)

A reaping portion having an engine bonnet that includes a diesel engine, a driving portion having a driving seat disposed above the engine bonnet, and a reaping portion that is connected to a traveling machine body so as to be movable up and down at a lateral side of the driving portion. A harvesting machine,
An exhaust gas purifying apparatus that introduces exhaust gas from the diesel engine and performs exhaust gas purification processing, the exhaust gas purifying apparatus as a whole is biased toward the cutting portion with respect to the driver seat, and The harvesting machine provided in the engine bonnet in such a manner that a part in the direction protrudes from the cutting unit side lateral wall of the operating unit to the cutting unit side.   The harvester according to claim 1, wherein the exhaust gas purifying device is disposed above the diesel engine.   The harvester according to claim 1 or 2, further comprising a flow guide that guides the flow of the engine cooling air flowing out from the engine bonnet toward the cutting portion toward the portion protruding toward the cutting portion of the exhaust gas purification device.   The harvester according to any one of claims 1 to 3, wherein a sensor for controlling the exhaust gas purification device is provided at a portion protruding toward the cutting portion of the exhaust gas purification device. The engine bonnet is supported on the traveling machine body so as to freely swing and open,
A sensor cover that covers the upper side of the sensor is extended from the engine bonnet toward the cutting part side and fixed to the engine bonnet; and a downward closing posture on the extended end side of the fixed cover part; The harvesting machine according to claim 4, further comprising an open / close cover portion that is swingably opened and closed in a rising and opening posture.

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