combine

Abstract

To provide a combine-harvester which is hardly affected by heat generated from an engine, and which prevents the occurrence of a malfunction in an electrical controller by arranging the electrical controller for controlling an operation of the combine-harvester in a location where dust and the like are hardly accumulated.SOLUTION: A combine-harvester, which has an engine arranged anterior to a traveling machine body, comprises a cooling device for cooling the engine. An electrical controller for controlling an operation of the combine-harvester is arranged on one side surface of the cooling device.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a combine harvester equipped with an electrical controller that is arranged so as to be less susceptible to the effects of external dust and exhaust air from the engine. [Background technology]

[0002] In some combine harvesters, for example, an electrical controller such as an ECU for controlling the operation of the engine is provided, and the electrical controller is positioned so as to be away from the influence of heat from the engine.

[0003] Patent Document 1 discloses a combine harvester equipped with an engine positioned below and behind the control unit, a support frame located below and in front of the control unit, and a shielding member located forward of the support frame to provide shielding in the fore-and-aft direction, with an electrical controller attached further forward of the shielding member.

[0004] A combine harvester equipped with such an electrical controller layout structure makes it difficult for heat generated by the engine to be transmitted to the electrical controller, reducing the risk of thermal damage to the electrical controller.

[0005] However, since the electrical controller is provided on the front side of the shielding member, the electrical controller is inevitably placed in the vicinity of the reaping unit, which may result in the electrical controller being more susceptible to the effects of dust.

[0006] In other words, dust generated by the cutting operation of the cutting unit during harvesting work tends to adhere to and accumulate on connection parts such as the coupler at the end of the wiring connecting the electrical controller to the engine, and there is a risk that dust will inadvertently enter the inside of the connection when the connection part is attached or detached, causing electrical problems in the electrical controller. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 6979450 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a combine harvester in which the electrical controller is located in a location that is less susceptible to the effects of heat generated by the engine and where dust and other particles are less likely to accumulate. [Means for solving the problem]

[0009] The combine harvester of the present invention is a combine harvester having an engine disposed at the front of the running body, and is equipped with a cooling device for cooling the engine, and an electrical controller for controlling the operation of the combine harvester is disposed on one side of the cooling device.

[0010] In another aspect of the combine harvester of the present invention, the cooling device is arranged at the side end of the running body, the engine is arranged on one side of the cooling device in the fore-and-aft direction of the running body, and the electrical controller is arranged on the side opposite to the one side of the cooling device.

[0011] In another aspect of the combine of the present invention, the cooling devices are arranged in multiple positions in a vertical direction on the running body, the electrical controller is arranged in the upper cooling device of the multiple cooling devices, and the upper cooling device has a cooling fan and cools the air supplied to the engine.

[0012] A combine harvester according to another aspect of the present invention includes a grain tank on the traveling body, and the electrical controller is disposed between the cooling device and the grain tank.

[0013] In a combine harvester according to another aspect of the present invention, the electrical controller is a controller for controlling the engine.

[0014] In another aspect of the combine of the present invention, the electrical controller has a coupler to which an end of a harness is connected, and the coupler has an insertion port facing the inside of the running body in the width direction.

[0015] In a combine harvester according to another aspect of the present invention, the cooling device is connected to and supported by a support frame erected on the traveling body. [Effects of the Invention]

[0016] According to the present invention, the electrical controller that controls the operation of the combine is placed in a location that is less susceptible to the effects of heat generated by the engine and where dust and other particles are less likely to accumulate, thereby preventing malfunctions in the controller. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a left side view of a combine harvester according to an embodiment of the present invention. FIG. [Figure 2] FIG. 1 is a right side view of a combine harvester according to an embodiment of the present invention. [Figure 3] 1 is a plan view of a combine harvester according to an embodiment of the present invention. [Figure 4] FIG. 2 is a right side view of the cabin and the outside air intake cover according to the embodiment of the present invention. [Figure 5] FIG. 2 is a left side view of a cabin according to an embodiment of the present invention. [Figure 6] FIG. 2 is a right side view of the interior of a cabin according to an embodiment of the present invention. [Figure 7] FIG. 2 is a left front perspective view showing the device configuration mounted on the front of the traveling machine body according to one embodiment of the present invention. [Figure 8] FIG. 2 is a right rear perspective view showing the device configuration mounted on the front of the traveling machine body according to one embodiment of the present invention. [Figure 9] FIG. 2 is a right side view showing the device configuration mounted on the front of the traveling machine body according to one embodiment of the present invention. [Figure 10]FIG. 2 is a rear view showing the configuration of a device mounted on the front of the traveling machine body according to one embodiment of the present invention. [Figure 11] 1 is a left side view showing a radiator according to an embodiment of the present invention. [Figure 12] FIG. 1 is a left side view showing an intercooler according to an embodiment of the present invention. [Figure 13] FIG. 2 is a rear perspective view showing the configuration of a support frame and a connecting frame according to an embodiment of the present invention. [Figure 14] 1 is a system configuration diagram of an electrical controller according to an embodiment of the present invention; [Figure 15] FIG. 2 is a left front perspective view showing the wiring configuration of the harness according to the embodiment of the present invention. [Figure 16] FIG. 2 is a left rear perspective view showing the wiring configuration of the harness according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention aims to stabilize the control function of the combine harvester by the electrical controller, by devising an ingenious layout for the electrical controller that controls the operation of the combine harvester in a combine harvester with an engine located at the front of the traveling body so that the electrical controller is not affected by exhaust heat from the engine or dust from outside. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0019] The configuration of a combine harvester 1 according to this embodiment will be described with reference to Figures 1 to 16. In the following description, the left and right sides of the combine harvester 1 when viewed from the front will be referred to as the left and right sides of the combine harvester 1, respectively.

[0020] As shown in Figures 1 to 3, the combine harvester 1 is configured with a running section 2 which is configured as a crawler-type running device having a pair of left and right crawler sections 3, 3, and a running body 4 which is supported by the running section 2.

[0021] Arranged on the traveling body 4 are various harvesting equipment components, such as a cabin 30 in which the worker who harvests the grain sits, a driving section 12 for the worker to operate the combine, a reaping section 5 that performs the operations necessary for grain harvesting, a threshing section 6, a grain tank 7, a sorting section 8, a discharge auger 9, and a straw disposal section 10.

[0022] Each crawler section 3 that constitutes the running section 2 has a track frame 3a extending in the fore-and-aft direction below the running body 4, various rotating bodies supported by the track frame 3a, and tracks 3b wound around these rotating bodies.

[0023] The crawler unit 3 is a rotating body supported by the track frame 3a, and includes a drive sprocket 3c supported at the front end of the track frame 3a, and is driven to run by power transmitted from an engine 11 mounted on the running body 4.

[0024] The reaping unit 5 is provided at the front of the traveling body 4 across substantially the entire width of the combine harvester 1 so as to harvest and collect the stalks in the field. The reaping unit 5 is attached to the traveling body 4 so as to be rotatable about a predetermined axis via a hydraulic cylinder for lifting and lowering, and is provided so that its elevation can be adjusted by the rotational movement caused by the extension and contraction of the hydraulic cylinder.

[0025] The reaping unit 5 has a reaping support machine frame 5a as a reaping frame, and this reaping support machine frame 5a supports a grass body 5b, a lifting device 5c, a cutting blade device 5e, and a stalk transport device 5f.

[0026] This allows the culms in the field to be divided by the dividing body 5b, the divided culms to be raised by the raising device 5c, and the raised culms to be transported rearward by the culm transporting device 5f while being cut and harvested by the cutting blade device 5e. Each device of the harvesting section 5 is operated by power transmitted from the engine 11 equipped on the combine harvester 1.

[0027] In addition, as shown in Figure 3, a threshing section 6 that threshes the stalks cut by the cutting section 5 and a grain tank 7 that serves as a grain storage section that stores the grains removed from the threshing section 6 are arranged side by side on the left and right sides of the running body 4.

[0028] As shown in Figure 1, the threshing section 6 has a threshing drum 6a and a processing drum (not shown) with a rotation axis extending in the front-to-back direction, and a stalk supplying device located to the left of the threshing drum 6a. The stalk supplying device clamps the base of the stalk and transports the stalk rearward in a lying position with the ear tip facing the threshing drum 6a. The stalk supplying device has a feed chain wound around multiple sprockets with a rotation axis extending in the left-to-right direction, and a stalk supply clamping body (not shown) that cooperates with the feed chain to clamp the base of the stalk.

[0029] 1, a sorting section 8 is provided below the threshing section 6 on the traveling body 4 to sort the material threshed by the threshing section 6. The sorting section 8 is equipped with a shaking sorting device 8a, a wind sorting device, and a grain conveying device, and shakes and sorts the material that has fallen from the threshing section 6 using the shaking sorting device 8a, and then winds and sorts the material after shaking and sorting using the wind sorting device.

[0030] In the sorting section 8, of the processed material after wind sorting, the grains are transported to the right toward the grain tank 7 by a grain transporting device, and straw dust and other debris are blown rearward by the wind sorting device and discharged outside the machine body. The grains transported toward the grain tank 7 by the grain transporting device are stored in the grain tank 7.

[0031] 3, a discharge auger 9 that discharges grains from the grain tank 7 to the outside is provided at the rear right end of the traveling body 4 and is rotatable via a vertical take-out conveyor 9b provided at the rear right side of the traveling body 4. In FIG. 3, reference numeral 27 denotes an auger rest for supporting and placing the discharge auger 9 in a stored state, and is provided to the left of the rear of the cabin 30.

[0032] The grains stored in the grain tank 7 are transported by a discharge auger 9 equipped with a screw conveyor, and are discharged from a discharge outlet 9a provided at the tip of the discharge auger 9. The grains discharged from the discharge outlet 9a are dumped into the bed of a truck, a container, or the like.

[0033] 1, a straw waste processing unit 10 is provided on the traveling machine body 4 behind the threshing unit 6 for processing the straw waste after threshing by the threshing unit 6. The straw waste processing unit 10 is composed of a straw waste conveying device 10a for transporting the stalks (discarded stalks) rearward and discharging them outside the machine body, and a straw waste cutting device 10b for cutting the discarded stalks transported from the straw waste conveying device 10a and discharging them outside the machine body.

[0034] In addition, on the traveling body 4, a cabin 30 that covers the driving unit 12 is provided to the right of the reaping unit 5 and in front of the grain tank 7. In other words, the driving unit 12 is provided inside the cabin 30 provided in the front part of the traveling body 4.

[0035] As shown in Figures 4 to 6, the cabin 30 has a front portion 31 forming the four side walls, a rear wall portion 32, a left side wall portion 33, a right side wall portion 34, a roof portion 35 forming the ceiling portion, and a floor portion 36, and is configured to be approximately box-shaped overall.

[0036] The front portion 31 of the cabin 30 has a forward-inclined upper front surface portion 31a that constitutes the upper half of the front portion 30 and a front lower surface portion 31b that is inclined downwards toward the front and constitutes approximately the lower half of the front portion 31, and is formed as a curved shape that is concave toward the rear in a side view as a whole. The front upper surface portion 31a is a transparent window portion made of a rectangular transparent plate, and the front lower surface portion 31b is a front lower wall portion made of a metal plate such as a steel plate.

[0037] 5, the left side wall 33 of the cabin 30 has a transparent window portion in approximately the upper half and a lower side surface portion 41 made of sheet metal such as steel plate in approximately the lower half. A left support pillar 42 extending linearly in the up-down direction is provided in approximately the center in the fore-and-aft direction of the left side wall 33, and a transparent left front window 47 and a left rear window 43 are disposed on the front and rear sides of this left support pillar 42, respectively.

[0038] The left rear window 43 is configured by attaching a rectangular transparent plate 45 to a frame-shaped window frame 44 whose front edge is the left support pillar 42 in the upper part of the lower side surface 41. The left front window 47 has a generally inverted trapezoidal shape, and its front edge is aligned with the forward inclination of the front upper surface 31a of the front surface 31.

[0039] As shown in FIG. 4, the right side wall portion 34 of the cabin 30 is made up of a door 51 for boarding and disembarking, which makes up the majority of the right side wall portion 34, and a right front window portion 59 and a transparent window 70, which are arranged on the front and rear sides of the door 51, respectively.

[0040] Door 51 is mounted between right front support pillar 49 and right rear support pillar 50, which are erected at a fixed distance from each other in the front and rear, and is rotatable about supports 52 provided at two locations, one above the other, on right rear support pillar 50. Door 51 has an upper half serving as an openable / closable window 56, a lower half serving as a lower wall covered with a transparent plate 57, and a handle 58 provided at the front of the lower wall.

[0041] The right front support column 49 has a lower portion that follows the slope of the front lower surface portion 31b of the front surface portion 31 in a side view, and an upper portion that extends in the vertical direction, and is erected at the right front position of the floor portion 36. The right rear support column 50 is parallel to and at approximately the same height as the upper portion of the right front support column 49, and is erected in the center between the front and rear of the right edge of the rear wall portion 32, which is sloped downwards in the front view in a side view.

[0042] The right front window portion 59 has a generally inverted triangular shape, with its front edge formed along the slope of the front surface portion 31. The transmission window 70 has a generally inverted triangular shape, with its rear edge formed along the slope of the rear wall portion 32.

[0043] The rear wall 32 of the cabin 30 is provided as an inclined surface that slopes downward from the front (upward from the rear) from the bottom to the top from the front to the rear, and is inclined backward in a side view. As shown in Figures 5 and 6, the rear wall 32 rises obliquely upward and rearward from the rear side of the seat support surface 65, and its upper end, which connects to the roof 35, is located in a region near the rear end of the roof 35.

[0044] The roof portion 35 of the cabin 30 has an approximately rectangular shape with the longitudinal direction being the fore-and-aft direction when viewed from above, and the front and rear edge ends protrude in a eave-like manner forward and backward beyond the upper ends of the front portion 31 and the rear wall portion 32, respectively.

[0045] As shown in Fig. 6, the floor 36 of the cabin 30 forms a horizontal floor surface 63 in front of and below the driver's seat 19. A substantially horizontal seat support surface 65 is provided on the rear side of the floor surface 63 via a front-down inclined surface 64. The driver's seat 19, which constitutes the driver's section 12, is installed on this seat support surface 65.

[0046] As shown in Fig. 6, the driver's section 12 is provided within a cabin 30 with a steering wheel 18 for operating the vehicle, a driver's seat 19 provided behind the steering wheel 18, and a side operation section 20 provided on the left side of the driver's seat 19. The side operation section 20 is configured by arranging various operating tools, such as a main speed change lever 21 and an auxiliary speed change lever 22, on a side column 23.

[0047] As shown in Fig. 3, a prime mover unit including an engine 11 installed in an engine room 13 is provided below the driving unit 12. The engine 11 is disposed below the driving unit 12 and on the right side of the front part of the traveling body 4.

[0048] The engine 11 is a diesel engine, and transmits its power via a transmission to various devices such as the traveling section 2, reaping section 5, threshing section 6, sorting section 8, discharge auger 9, and straw disposal section 10. The engine 11 is arranged on the machine base 25 that constitutes the traveling body 4, together with the threshing section 6 and grain tank 7.

[0049] As shown in FIG. 7, the engine 11 has an intake manifold on the air intake side and an exhaust manifold on the exhaust gas discharge side, which are connected in communication with a turbocharger 340 having a compressor-turbine that can be coaxially rotated and driven at both ends of the rotating shaft.

[0050] The supercharger 340 is configured to rotate a turbine at one end of a rotary shaft using exhaust gas discharged from the engine 11, and to rotate a compressor at the other end of the rotary shaft, thereby forcibly sending air into the inside of the engine 11.

[0051] 7 to 10, the engine 11 is provided with an air cleaner 561, an air intake pipe 563, and a pre-cleaner 562, which constitute its air intake system. The air cleaner 561 and the pre-cleaner 562 are connected to each other by the air intake pipe 563.

[0052] Pre-cleaner 562 is provided at the upstream end of the air intake path for engine 11, and removes dust and the like while drawing air into the air intake path, thereby purifying the air drawn into the air intake path. Air cleaner 561 further purifies the air that has been cleaned by pre-cleaner 562 and sent via air intake pipe 563, and supplies the air to engine 11.

[0053] The air cleaner 561 has a substantially cylindrical outer shape, and is disposed between an exhaust gas purification device 330 (described later) and the intercooler 500, with the cylinder axis direction oriented in the front-rear direction. As shown in Fig. 7 , a downstream air intake pipe 565 extends from the air discharge side of the air cleaner 561, and the downstream side of the downstream air intake pipe 565 is connected to an air intake section provided on the compressor side of the turbocharger 340.

[0054] Air intake pipe 563 is supported relative to intercooler 500 by a straight pipe support rod 570 extending from intercooler 500. Pipe support rod 570 has a lower end fixed to an upper portion of rear surface portion 501e of case 501 with a bolt or the like, and an upper end fixed to an intermediate portion of air intake pipe 563.

[0055] 1 and 2, the combine harvester 1 has a machine base 25 on the track frame 3a. The machine base 25 is horizontally configured on the track frame 3a using frame members, plate-shaped members, etc., arranged in the front-rear or left-right direction. The rear side of the machine base 25 extends rearward from the rear end of the crawler unit 3 in the front-rear direction.

[0056] The engine 11 is mounted on the front right side of the machine base 25, with the axial direction of the output shaft oriented left-right. The threshing unit 6 and grain tank 7 are disposed behind the engine 11. As shown in FIG. 7, a transmission case 26 for transmitting the power of the engine 11 to the crawler units 3 is disposed between the left and right crawler units 3 at the front of the machine base 25.

[0057] 7, a step support frame 600 is provided below the floor 36 of the cabin 30, supporting and forming a floor surface portion 63 of the floor 36 at the front end of the machine base 25. The step support frame 600 is assembled into a rectangular frame shape by a plurality of vertical and horizontal frame portions 601, 602 and is provided below and in front of the driver's section 12 (at the front of the machine base 25), with a battery 610 for supplying power, a steering case (not shown), and a continuously variable transmission case disposed in the space inside the frame.

[0058] A rectangular shielding plate 620 is installed on the front side of the step support frame 600 to substantially close the front opening of the step support frame 600. In this embodiment, a standard controller 630 is installed on the front side of the shielding plate 620 to control various aspects of the combine, such as power supply, reaping lift, and hydraulic valves.

[0059] That is, a battery 610 for supplying power is mounted below the driving unit 12 and behind the shielding plate 620, and below the driving unit 12, in front of the engine 11, a standard controller 630, the shielding plate 620, and the battery 610 are positioned in a line in the fore-and-aft direction in that order from front to back.

[0060] As a result, the standard controller 630 and the engine 11 are positioned on the front and rear sides of the inner space of the step support frame 600. Furthermore, the battery 610 and the shielding plate 620 are positioned between the standard controller 630 and the engine 11, and both the battery 610 and the shielding plate 620 block the exhaust heat from the engine 11 to the standard controller 630.

[0061] 6, the cabin 30 is equipped with an air conditioner 80 that performs heating and cooling operations for the interior of the cabin 30. The air conditioner 80 is operated by an air conditioning operation unit (not shown) provided in the driving unit 12. The air conditioning operation unit includes, for example, a switch for turning the air conditioner 80 on and off, a dial for adjusting the set temperature, and the like.

[0062] The air conditioner 80 includes a condenser unit 81 provided on the rear wall 32 of the cabin 30 as a so-called outdoor unit, and an air conditioning unit 82 provided in the roof 35 of the cabin 30 as a so-called indoor unit.

[0063] The air conditioning unit 82 has a heat exchanger 95 including an evaporator, a heater, etc., and a blower fan that blows air to the heat exchanger 95, and is located above the condenser unit 81 within the roof portion 35, with the heat exchanger 95 and the blower fan communicating with each other.

[0064] The roof portion 35 has a flat exterior shape and a hollow interior, and includes a lower panel portion 97 and an upper panel portion 98 provided above the lower panel portion 97. A recessed portion 97d that protrudes downward is formed at the rear of the lower panel portion 97, and the recessed portion 97d forms an air conditioner housing portion 99 that houses the air conditioner unit 82.

[0065] Additionally, within the roof portion 35, an air duct 105 is provided on the front side of the air conditioning unit 82 for sending the air for conditioning obtained by the air conditioning unit 82 into the interior of the cabin 30, and the cold air generated by the heat exchanger 95 is pressurized through the air duct 105 and blown out from an air outlet 106 provided toward the interior of the cabin 30.

[0066] At the rear of the cabin 30 configured as above, as shown in FIG. 4, an outside air intake cover 15 is provided, the front portion of which is butted at an angle so as to be aligned along the rear edge of the cabin 30 in a side view.

[0067] The outside air introduction cover 15 has a substantially right-angled trapezoidal shape and is located on the right side of the combine 1, between the cabin 30 and the grain tank 7, and is flush with the right side of the grain tank 7. In other words, the grain tank 7 is located behind the cabin 30 on the traveling body 4, and is provided rearward of the outside air introduction cover 15 in the front-to-rear direction. The outside air introduction cover 15 is rotatably supported via a hinge (not shown) on a support pillar erected on the traveling body 4 so as to follow the rear edge of the cabin 30.

[0068] As shown in Figure 4, the front of the outside air introduction cover 15 and the rear of the cabin 30 overlap each other when viewed from the side, and their opposing edges form a boundary 67 along the boundary line A1.

[0069] As shown in Figure 4, the upper and lower parts of the cover surface of the outside air intake cover 15 are provided with an intake port 503 for ventilating and introducing outside air into the intercooler 500 serving as the upper cooling device, and a rotary screen 16 for ventilating and introducing outside air into the radiator 14 serving as the lower cooling device.

[0070] In other words, inside the outside air intake cover 15, the intercooler 500 as the upper cooling device is positioned so that most of it overlaps with the intake port 503 when viewed from the right side, and the radiator 14 as the lower cooling device is positioned so that most of it overlaps with the rotary screen 16 when viewed from the right side.

[0071] The rotary screen 16 below the outside air introduction cover 15 is rotatably supported by an opening 16a formed in the outside air introduction cover 15, and is configured to rotate when driven by a motor (not shown).

[0072] Specifically, the rotary screen 16 is composed of a rotation support part that rotates around the center of a circular opening 16a, a circular dustproof net 16b that is stretched over the rotation support part so as to close the opening 16a, and a suction device 17 that abuts against the outside of the dustproof net 16b and sucks and removes the captured dust. This makes it possible to prevent dust from entering the engine room 13 together with outside air.

[0073] 4, the intake port 503 at the top of the outside air introduction cover 15 is configured by stretching a dustproof net 503b over an opening 503a formed in the outside air introduction cover 15. The opening 503a and the dustproof net 503b have an arc shape that follows the outline of the top of the outside air introduction cover 15 and has its lower side aligned with the circular shape of the opening 16a of the rotary screen 16.

[0074] An upper cover portion 24 is provided above the outside air introduction cover 15. The upper cover portion 24 is a generally trapezoidal plate, and is provided so as to form a right side surface that is flush with the outside air introduction cover 15. The upper cover portion 24 is provided in a fixed state to a predetermined frame or the like.

[0075] 2 and 4, an intercooler 500 and a radiator 14 serving as cooling devices for cooling the engine 11 are arranged side by side in the vertical direction on the traveling body 4 between the outside air intake cover 15 and the engine 11. That is, the intercooler 500 and the radiator 14 serving as cooling devices are disposed at the side end of the traveling body 4, and the engine 11 is disposed on one side of the intercooler 500 and the radiator 14 serving as cooling devices in the front-rear direction of the traveling body 4.

[0076] That is, the cooling device for cooling the engine 11 is configured by two parts, one above the other, namely, an intercooler 500 disposed on the upper side via a support frame 360 ​​(described later) for cooling the air supplied to the engine 11, and a radiator 14 disposed on the lower side for cooling the coolant for the engine 11. That is, the intercooler 500 and the radiator 14 as cooling devices are connected to and supported by the support frame 360 ​​on the traveling machine body 4.

[0077] The radiator 14 serving as the lower cooling device is provided midway in the circulation path of the cooling water of the engine 11, and is configured to cool the cooling water sent from the engine 11 by heat exchange with the outside air.

[0078] The radiator 14, which serves as the lower cooling device, is located midway in the circulation path of the cooling water of the engine 11, and is configured to cool the cooling water sent from the engine 11 by heat exchange with the outside air drawn into the engine room 13 by the cooling fan 140.

[0079] As shown in FIG. 11, the radiator 14 has a rectangular box-like shape and includes an upper tank 141 at the top that temporarily stores the cooling water sent from the engine 11, a lower tank 142 at the bottom that temporarily stores the cooled cooling water, a plurality of tubes (not shown) that extend in the vertical direction between the upper tank 141 and the lower tank 142 and are arranged side by side in the horizontal direction, and a plurality of fins (not shown) that are fitted and fixed to the outside of the tubes.

[0080] Each tube is connected at its upper and lower ends to an upper tank 141 and a lower tank 142, respectively, and cooling air drawn in from the outside by a cooling fan 140 is brought into contact with the fins, thereby exchanging heat with the cooling water flowing inside and cooling it.

[0081] The radiator 14 is erected between the engine 11 and an outside air intake cover 15 serving as an engine cover of an engine room 13 that covers the right side of the engine 11, with its thickness oriented in the left-right direction.

[0082] The cooling fan 140 is provided on the right side of the engine 11, and the radiator 14 is installed to the right of the cooling fan 140. The rotating shaft of the cooling fan 140 is directly connected to the drive shaft of the engine 11, and is driven to rotate in the intake direction as the engine 11 is driven.

[0083] The radiator 14 has a radiator frame 143 that has a rectangular frame shape in side view. The radiator 14 is attached to the radiator frame 143 so as to entirely cover the rectangular exhaust side opening of the radiator frame 143. In addition, a dustproof screen 143b that traps dust and the like is attached to the intake side opening 143a on the outside of the radiator frame 143.

[0084] A shroud 144 is provided between the radiator 14 and the cooling fan 140. Covering the cooling fan 140 with the shroud 144 promotes the intake of outside air by the cooling fan 140, and the cooling air is blown onto the radiator 14 efficiently.

[0085] The shroud 144 is a rectangular box-shaped member of approximately the same size as the radiator 14, and the surface (outer surface) on which the radiator 14 is disposed is open on all sides, while the surface (inner surface) on which the cooling fan 140 is disposed has suction holes 144a with a diameter slightly larger than that of the cooling fan 140. The shroud 144 is fixed to the radiator frame 143 with fixing members such as bolts, with the radiator 14 interposed between the shroud 144 and the radiator frame 143.

[0086] 10 and 11, a cooling water inlet pipe 145 and a cooling water outlet pipe 146, which form a cooling water circulation path, are installed between the radiator 14 and the engine 11. The engine 11 has a cooler jacket (not shown) through which the cooling water circulates.

[0087] An upstream end of the cooling water inlet pipe 145 is connected in communication with an outlet 142a of a lower tank 142 below the radiator 14. A downstream end of the cooling water inlet pipe 145 is connected in communication with an inlet 110a of a cooler jacket of the engine 11. A pump (not shown) for circulating the cooling water is interposed between the cooling water inlet pipe 145 and the cooler jacket.

[0088] An upstream end of the cooling water outlet pipe 146 is connected in communication with an outlet 110b of a cooler jacket 110 of the engine 11. A downstream end of the cooling water outlet pipe 146 is connected in communication with an inlet 141a of an upper tank 141 above the radiator 14. The cooling water outlet pipe 146 is connected in communication with a reservoir tank 147, to which cooling water is appropriately supplied, via a supply pipe 147a at a midpoint.

[0089] When the cooling fan 140 rotates, cooling air is drawn into the engine compartment 13 through the outside air intake cover 15 located on the right side of the radiator 14, and this outside air is used for the above-mentioned heat exchange of the coolant in the radiator 14. The cooling air generated in the engine compartment 13 by the cooling fan 140 drawing in outside air flows toward the engine 11 and directly cools the engine 11 by coming into contact with the outer periphery of the engine 11.

[0090] An intercooler 500 serving as an upper cooling device is disposed between the cabin 30 and the grain tank 7. The intercooler 500 is provided such that the entire case 501 is covered from the right side by an outside air intake cover 15.

[0091] That is, as shown in Figures 2 and 3, the grain tank 7 is arranged so that its front surface 7a, which is a vertical flat portion, is positioned behind the intercooler 500 (case 501) and the radiator 14, which are located behind and to the right of the cabin 30.

[0092] In this way, the intercooler 500 and the radiator 14 as a cooling device are provided on the right side of the traveling body 4, so as to be located between the cabin 30 and the grain tank 7 in the front-rear direction.

[0093] The intercooler 500 functions as a heat exchanger that cools the air discharged from the compressor of the supercharger 340 of the engine 11. The air cooled by the intercooler 500 is supplied to the intake manifold of the engine 11 as supply air to the engine 11.

[0094] An air inlet pipe 505 and an air outlet pipe 506 are arranged between the intercooler 500 and the engine 11 .

[0095] An upstream end of the air inlet pipe 505 is connected in communication with the compressor side of the turbocharger 340. As shown in Fig. 12, a downstream end of the air inlet pipe 505 is connected in communication with an air inlet 507 provided in the front part of the lower side of the lower surface 501a of the case 501. The air inlet pipe 505 is also arranged so as to pass under the front cross frame 361. The air inlet 507 is provided in the front part of a duct part 509 provided on the lower side of the lower surface 501a of the case 501, and is a cylindrical protruding part that opens to the left.

[0096] The air inlet pipe 505 is disposed leftward from the inlet port 507 and extends downward and forward on the right side of the engine 11, and is connected from the right side to the supercharger 340 provided at the upper front part of the engine 11. The air inlet pipe 505 supplies air discharged from the compressor of the supercharger 340 to the intercooler 500. The air is cooled while passing through a predetermined air passage 504 having fins or the like provided inside the case 501.

[0097] The upstream end of the air outflow pipe 506 is connected in communication with an air outflow port 508 provided at the lower rear part of the lower surface part 501a of the case 501. The air outflow port 508 is provided at the rear part of the duct part 509 and is a cylindrical protruding part that opens to the left. The downstream end of the air outflow pipe 506 is connected in communication with the intake manifold of the engine 11.

[0098] The air outflow pipe 506 extends from the outlet 508 downward toward the left front and is connected from the right side to an intake manifold located at the upper rear of the engine 11. The air outflow pipe 506 supplies air cooled inside the case 501 to the intake manifold of the engine 11.

[0099] 12, the intercooler 500 is configured with a box-shaped case 501 having a substantially rectangular parallelepiped outer shape that forms the exterior of the device, and is installed with the longitudinal direction of the substantially rectangular parallelepiped outer shape of the case 501 aligned in the front-to-rear direction in a plan view and aligned in the up-to-down direction in a front-to-rear view. The intercooler 500 is provided on the machine base 25 at a position above and to the right of the engine 11, and is supported by a predetermined support member.

[0100] Intercooler 500 also has cooling fan 540, which is a cooling fan capable of blowing air toward exhaust gas purification device 330, which will be described later.

[0101] The cooling fan 540 is an electric fan having a fan body and an electric fan motor as a drive source for driving the fan body, and is configured so that the driving force of the fan motor can rotate the fan body in either the forward or reverse direction.

[0102] Cooling fan 540 is disposed on the left side of case 501, with the rotation axis of the fan body oriented left-right. Ventilation opening 501f, which is a circular opening concentric with the fan body, is formed in left side surface 501c of case 501. Ventilation opening 501f is formed so as to expose substantially the entire cooling fan 540 when viewed from the left side.

[0103] As shown in Figures 7 to 10, an exhaust gas purification device 330 for purifying exhaust gas from the engine 11 is disposed to the left of the intercooler 500. The exhaust gas purification device 330 purifies exhaust gas by removing particulate matter such as soot and nitrogen oxides (NOx) contained in the exhaust gas.

[0104] The exhaust gas purification device 330 has a DPF case 331 and an SCR case 332 that are approximately cylindrical and of similar size, and is arranged vertically above the main body of the engine 11 with the DPF case 331 and the SCR case 332 oriented in the front-to-rear direction and vertically aligned.

[0105] That is, the exhaust gas purification device 330 is disposed immediately behind the rear wall 32 of the cabin 30 in the longitudinal direction (see Figs. 1 and 2), and approximately in the center of the traveling body 4 in the lateral direction (between the threshing unit 6 and the grain tank 7) (see Fig. 3). The exhaust gas purification device 330 is disposed below the roof 35 of the cabin 30, on the left rear side of the cabin 30 (see Figs. 1 and 3).

[0106] With the above-described arrangement configuration of the exhaust gas purification device 330, the DPF case 331 and the SCR case 332 are arranged in a vertical line behind the driving section 12 located above the engine 11 and on the right side, which is the inside left and right side of the threshing section 6, with the longitudinal direction being the front-to-back direction.

[0107] The DPF case 331 has a diesel particulate filter inside and removes particulate matter in the exhaust gas of the engine 11. The SCR case 332 is a selective catalytic reduction (SCR) system that uses urea inside and removes nitrogen oxides in the exhaust gas of the engine 11.

[0108] Furthermore, one end (upstream side) of an exhaust pipe 341 that introduces exhaust gas from the engine 11 into the DPF case 331 is connected to the exhaust gas outlet side of the turbocharger 340. The other end (downstream side) of the exhaust pipe 341 is connected to an exhaust gas inlet port provided on the lower front side of the DPF case 331.

[0109] A DPF outlet pipe 342 that discharges exhaust gas from the DPF case 331 extends from the rear surface of the DPF case 331. The DPF outlet pipe 342 extends from the rear surface of the DPF case 331 to the upper left and then bends back toward the front. The downstream side of an elbow-shaped SCR inlet pipe 343 that extends toward the rear is connected to an exhaust gas inlet port provided on the lower left side of the front part of the SCR case 332.

[0110] The downstream side of the DPF outlet pipe 342 and the upstream side of the SCR inlet pipe 343 face each other in the front-to-rear direction, and a urea mixing pipe (not shown) that connects the DPF outlet pipe 342 and the SCR inlet pipe 343 is provided between these pipes. The exhaust gas discharged to the rear side from the DPF case 331 turns back to the front side by the DPF outlet pipe 342, and is introduced into the SCR case 332 via the urea mixing pipe and the SCR inlet pipe 343.

[0111] The DPF outlet pipe 342 is provided with a urea injection unit 348. Urea water stored in a urea water tank is sprayed and supplied to the urea injection unit 348 by a urea water supply device, and the urea water is discharged as ammonia from the DPF case 331 and mixed into the exhaust gas introduced into the SCR case 332.

[0112] An SCR outlet pipe 346 is provided on the rear side of the SCR case 332 to discharge exhaust gas from inside the SCR case 332. A tail pipe 347 is attached to the other end (downstream side) of the SCR outlet pipe 346 to discharge purified exhaust gas.

[0113] By the exhaust gas purification device 330 configured as described above, the exhaust gas emitted from the engine 11 is purified by removing particulate matter and nitrogen oxides from the exhaust gas and is then emitted.

[0114] Next, the configuration of the support frame 360 ​​and the connecting frame 380 that support the exhaust gas purification device 330, the radiator 14 and the intercooler 500 as cooling devices on the traveling body 4 will be described.

[0115] As shown in FIG. 13, the support frame 360 ​​and the connecting frame 380 are configured as a framework that surrounds the periphery of the engine 11 installed at the front of the machine base 25, and form an engine room 13.

[0116] The exhaust gas purification device 330 is supported on the machine base 25 by a support frame 360 ​​and a connecting frame 380. The support frame 360 ​​is a frame that is provided on the machine base 25 of the traveling machine body 4 and supports the driving unit 12. The connecting frame 380 is a frame that connects the support frame 360 ​​to the machine base 25 of the traveling machine body 4.

[0117] The support frame 360 ​​has a front cross frame 361 arranged in the left-right direction above the front of the engine 11, a front-to-rear extension frame 362 arranged in the front-to-rear direction to the right of the engine 11 at approximately the same height as the front cross frame 361, and three pillars: a front left pillar 363, a front right pillar 364, and a rear right pillar 365.

[0118] The front left support column 363 is erected on a support base 373 provided on the machine base 25 at a position to the left of the engine 11. The support base 373 has a configuration in which a horizontal support surface 373c is supported by a support column 373a, a support base 373b, etc. erected on the machine base 25. The front left support column 363 is erected vertically on the support surface 373c with the lower end of the front left support column 363 fixed to the support surface 373c with bolts or the like.

[0119] The front right support pillar 364 is located further forward than the front left support pillar 363 in the front-to-rear direction, and is erected on the machine base 25 at a position to the right front of the engine 11. The rear right support pillar 365 is located at approximately the same position in the left-to-right direction as the front right support pillar 364, and is located rearward of the front right support pillar 364, and is erected on the machine base 25 at a position to the right rear of the engine 11.

[0120] The front-rear extension frame 362 extends along the front-rear direction in a plan view, and is supported on both the front and rear sides by a front right support column 364 and a rear right support column 365. The upper end sides of the front right support column 364 and the rear right support column 365 are fixed to the front-rear extension frame 362 by welding or the like.

[0121] The front cross frame 361 is installed horizontally between the front left support pillar 363 and the front-rear extension frame 362. The left end of the front cross frame 361 is fixed by welding or the like to the front surface of the middle part of the front left support pillar 363. The right end of the front cross frame 361 is positioned above the front part of the front-rear extension frame 362, and is fixedly supported by the front-rear extension frame 362 via a predetermined support bracket or the like.

[0122] The front cross frame 361 is a frame that supports the rear of the cabin 30 from below. On both the left and right sides of the front cross frame 361, there are provided support base portions 367, which are horizontal plate-shaped portions that protrude rearward from the front cross frame 361. The support base portions 367 are portions that receive support legs (not shown) that are provided at the rear of the bottom surface of the cabin 30.

[0123] The cabin 30 is supported by the front cross frames 361 with the support legs abutting from above against the left and right receiving bases 367. With the above-described configuration, the driver's section 12 provided inside the cabin 30 is supported by the support frames 360 provided on the machine base 25.

[0124] The connecting frame 380 has a central front-rear extension frame 381 disposed in the front-rear direction above the engine 11, and a rear central support pillar 382 provided behind the engine 11. The central front-rear extension frame 381 and the rear central support pillar 382 are both formed from square steel pipes.

[0125] The rear center support pillar 382 is erected at a position rearward of the left-right center of the engine 11 on the machine base 25. The rear center support pillar 382 is provided at a position approximately in the center between the front left support pillar 363 and the front right support pillar 364 in the left-right direction, and is provided at a position rearward of the rear right support pillar 365 in the front-rear direction.

[0126] The central front-rear extension frame 381 extends horizontally along the front-rear direction, and is supported at both front and rear ends by the front cross frames 361 and the rear central support pillar 382. The front end of the central front-rear extension frame 381 is located above the approximate center of the front cross frames 361 in the left-right direction, and is fixedly supported via support fittings or the like. The rear end of the central front-rear extension frame 381 is supported from below by the rear central support pillar 382.

[0127] In this way, the central front-rear extension frame 381 and the rear central support 382 that make up the connecting frame 380 form an L-shaped frame portion having one end connected to and supported by the front lateral frame 361 and the other end supported on the machine base 25. A support frame body 390 is provided on the central front-rear extension frame 381 of the connecting frame 380.

[0128] The support frame 390 is a fixing member that fixes and supports the DPF case 331 and the SCR case 332 to the connecting frame 380. That is, the DPF case 331 and the SCR case 332 are provided on a central front-rear extension frame 381 that constitutes the connecting frame 380 in a fixed and supported state via the support frame 390.

[0129] The support frame body 390 has a generally rectangular plate-like outer shape, and is fixedly supported by the central front-rear extension frame 381 via a predetermined support member, with the plate thickness direction being the left-right direction.

[0130] The DPF case 331 and the SCR case 332 are located on the threshing unit 6 side, i.e., on the left side, of the support frame 390, and are fixed to and supported by predetermined fixing members or the like on the support frame 390. The support frame 390 is, for example, a cast part and has high rigidity.

[0131] The DPF case 331 and the SCR case 332 are covered by a cover support frame 420. The cover support frame 420 is fixedly supported on one side to the threshing unit 6 side and fixedly supported on the other side to the support frame 390, and is provided so as to straddle the upper part of the SCR case 332 from side to side.

[0132] The intercooler 500 serving as the upper cooling device is supported by the support frame 360 ​​in the same manner as the exhaust gas purification device 330, and is provided above the radiator 14 serving as the lower cooling device.

[0133] The intercooler 500 is provided in a state supported on the front-rear extension frame 362 that constitutes the support frame 360. The intercooler 500 is supported on the front-rear extension frame 362 by fixing support stays 512 provided on the case 501 to support protrusions 511 provided on the front-rear extension frame 362 on both the front and rear of the case 501. Support portions 510 formed by the support protrusions 511 and the support stays 512 are configured symmetrically in the front-rear direction.

[0134] The support protrusions 511 are provided at two locations, front and rear, spaced apart by a distance greater than the front-to-rear dimension of the case 501, by fixing, by welding or the like, a bent plate-like metal fitting that is approximately U-shaped in a plan view, with the left side facing upright, to the upper surface of the front-to-rear extension frame 362.

[0135] Support stay 512 is a longitudinal, bent plate-like member having a substantially L-shaped cross section, and is fixed, with its longitudinal direction aligned vertically, to each of front surface 501d and rear surface 501e of case 501. Support stay 512 is provided with its upper fixing surface 512a fixed to front surface 501d or rear surface 501e by welding or the like, and its lower portion protruding downward from lower surface 501a.

[0136] In this way, the support stay 512 forms legs that protrude downward on both the front and rear sides of the case 501, and the lower ends of the legs are fixed to support protrusions 511 that protrude from the front-to-rear extension frame 362.

[0137] As shown in FIG. 10, the intercooler 500 is connected to and supported by two front and rear support rods, a first support rod 521 and a second support rod 522, which are installed between the intercooler 500 and the support frame 390 that supports the exhaust gas purification device 330.

[0138] The first support rod 521 and the second support rod 522 are both straight pipe-shaped members with a circular cross section, and are arranged in the approximately left-right direction with a slight downward slope to the right. The first support rod 521 is located behind the second support rod 522.

[0139] One end of the first support rod 521 located on the left side is fixed by a bolt or the like to a predetermined fixing portion provided in the middle between the front and rear of the upper edge of the support frame 390. The other end of the first support rod 521 located on the right side is fixed by a bolt or the like to the upper left corner of the rear surface 501e of the case 501.

[0140] One end of the second support rod 522 located on the left side is fixed by a bolt or the like to a predetermined fixing portion provided at the rear end of the upper edge of the support frame 390. The other end of the second support rod 522 located on the right side is fixed by a bolt or the like to a longitudinal support stay 529 fixed to the upper left corner of the front surface 501d of the case 501.

[0141] The radiator 14 is disposed below the intercooler 500 supported by the front-rear extension frame 362. As shown in Figures 11 and 13, the radiator 14 is sandwiched between a front right support pillar 364 and a rear right support pillar 365 of the support frame 360, and stands along the right edge of the machine base 25.

[0142] The front-right support pillar 364 and the rear-right support pillar 365 each have a plurality of front and rear brackets 364a, 365a that protrude outward at regular intervals in the vertical direction and face each other. In addition, the front-right support pillar 364 and the rear-right support pillar 365 have strip-shaped front and rear bases 364b, 365b that protrude outward horizontally from their lower edges.

[0143] As shown in Figures 11 and 13, the radiator 14 has widthwise side wall portions facing the front and rear brackets 364a, 365a and bottom side wall portions placed on the front and rear bases 364b, 365b fixed with fixing members such as bolts for the front right support pillar 364 and the rear right support pillar 365.

[0144] In this way, the intercooler 500 as the upper cooling device and the radiator 14 as the lower cooling device are each connected to and supported by the support frame 360 ​​on the running body 4, with the upper intercooler 500 positioned slightly further rearward than the lower radiator 14 in the fore-and-aft direction of the running body 4.

[0145] The relative positional relationship between the intercooler 500 and radiator 14 as cooling devices and the engine 11 is as follows: The intercooler 500 as the upper cooling device is disposed slightly rearward of the engine 11 in the fore-and-aft direction of the traveling body 4 in a plan view. In other words, the engine 11 is disposed on one side (front side) of the intercooler 500 as a cooling device in the fore-and-aft direction of the traveling body 4, and the surface opposite to that side (front side) is located as a rear surface 501e of the intercooler 500. The radiator 14 as the lower cooling device is longer in the fore-and-aft direction than the engine 11 in a plan view and is disposed in approximately the same position as the engine 11.

[0146] In other words, the intercooler 500 and radiator 14 as cooling devices overlap with the engine 11 in the fore-and-aft direction of the running body 4, and each rear surface 501e, 14a is positioned rearward of the engine 11, forming one side surface away from the engine 11, and is arranged at the side end of the running body 4.

[0147] In this way, in the traveling body 4, the intercooler 500 is positioned and supported on the upper side by the support frame 360, and the radiator 14 is positioned and supported below the intercooler 500, making it possible to effectively utilize the space above the machine base 25 and store the intercooler 500 and radiator 14 compactly.

[0148] In the combine harvester 1, the area around the intercooler 500 as an upper cooling device and the radiator 14 as a cooling device disposed adjacent thereto below is an area where the temperature is relatively stable.

[0149] That is, in the vicinity of the intercooler 500 and the radiator 14 as cooling devices, cool air generated by the rotational drive of the cooling fan 540 and the cooling fan 140, respectively, circulates by convection, and the clearance space between the cooling device and the grain tank 7 becomes a cooled atmosphere.

[0150] Next, we will explain the system configuration of the electrical controller that controls the operation of the combine harvester 1. As shown in Figure 14, the multiple electrical controllers each control each part of the combine harvester 1 based on input signals from various sensors and the like that the combine harvester 1 has.

[0151] Each controller is configured with a CPU (Central Processing Unit) as an arithmetic processing device that executes various arithmetic processing and control, storage devices such as RAM (Random Access Memory) and ROM (Read Only Memory), input / output devices (input / output circuits) such as input / output interfaces for data input / output, peripheral circuits such as clock circuits, etc., all connected via a bus, etc. The CPU of the controller performs arithmetic processing according to various programs stored in the ROM, etc.

[0152] 14, the multiple electrical controllers include, for example, an ECU (Engine Control Unit) for controlling the operation of the engine 11, a DCU (Dosing Control Unit) for controlling the amount of urea in the exhaust gas purification device 330, a reaping controller for controlling the operation of the reaping unit 5, a threshing controller for controlling the operation of the threshing unit 6, a tank controller for controlling harvest information in the grain tank 7, a sorting controller for controlling the operation of the sorting unit 8, an auger controller for controlling the operation of the discharge auger 9, and a standard controller for controlling the power supply, work clutch, alarms, and hydraulic system. However, the configuration of each controller is not particularly limited.

[0153] These electrical controllers are interconnected so that they can communicate with each other via a first CAN (Controller Area Network), which serves as the main BUS for each equipment component required for harvesting operation, and a second CAN, which serves as the travel BUS for each equipment component required for travel operation.

[0154] The first CAN is connected to the threshing controller, auger controller, tank controller, sorting controller, and operation switches for inputting the operating conditions of each device, while the second CAN is connected to the ECU, DCU, and reaping controller.

[0155] The first CAN and the second CAN are connected via a standard controller. In this way, the parallel BUS consisting of the first CAN of the harvesting system and the second CAN of the traveling system is connected for communication via each electrical controller, thereby enabling synchronous control of the engine 11, exhaust gas purification device 330, reaping unit 5, threshing unit 6, grain tank 7, sorting unit 8, and discharge auger 9.

[0156] Next, the arrangement of the electrical controller 200 in the combine harvester 1 will be described. As shown in Figures 10 and 12, the electrical controller 200 is disposed on one side of each of the upper and lower cooling devices. In this embodiment, the electrical controller 200 is an ECU that controls the operation of the engine 11.

[0157] That is, the electrical controller 200 is arranged on one side of the intercooler 500 as an upper cooling device or the radiator 14 as a lower cooling device, which are connected to and supported by a support frame 360 ​​erected on the running body 4.

[0158] With this configuration, the electrical controller 200 is not directly disposed on the vehicle body (traveling vehicle body 4), and therefore vibrations caused by driving the engine 11 are not directly transmitted to the electrical controller 200. In other words, vibrations of the engine 11 are deflected and absorbed by the support frame 360 ​​and connecting frame 380, which are assembled from the front lateral frame 361, the front / rear extension frame 362, the front left support 363, etc., and direct transmission of vibrations to the radiator 14 and intercooler 500 is suppressed, thereby preventing damage to the electrical controller 200 due to vibration impact.

[0159] The electrical controller 200 houses a circuit board that serves as the control center in a board storage case 201 having a rectangular, flat outer shape, and the bottom surface of the board storage case 201 abuts against the upper side (upper half) of the rear portion 501e of the case 501 that constitutes the intercooler 500 and is screwed in place with fixing members such as bolts.

[0160] The electrical controller 200 has a female coupler 203 into which a male coupler 211 provided at the end of a connection cable 210 serving as a harness that connects the engine 11 and the electrical controller 200 is inserted.

[0161] The female coupler 203 is a rectangular cylinder with an opening at the tip as an insertion port 203a for receiving the male coupler 211, and two of them protrude adjacent to each other from one side wall portion with the cylinder axis direction perpendicular to the thickness direction of the substrate storage case 201.

[0162] The electrical controller 200 is arranged vertically on the rear surface 501e of the intercooler 500 with the front-to-rear direction being the plate thickness direction, with the insertion port 203a of the female coupler 203 facing the inside (left side) of the combine 1.

[0163] The electrical controller 200 is disposed on the rear surface 501e of the intercooler 500 such that the cylindrical axis direction of the female coupler 203 is the same as the rotation axis direction (air blowing direction) of the cooling fan 540.

[0164] In other words, the electrical controller 200 has the connection parts with wiring components such as cables and cords that connect to the engine 11 facing the inside (left side) of the combine 1, thereby reducing the chance of dust from outside the combine 1 accumulating at the connection parts.

[0165] The electrical controller 200 is provided on the rear surface 501 e of the intercooler 500 with the outer surface thereof entirely covered by the cover body 202 except for the insertion opening 203 a of the female coupler 203 .

[0166] The cover body 202 has an opening 202 a formed by opening one side wall corresponding to the insertion opening 203 a of the electrical controller 200 , and is shaped like a substantially rectangular flat box that conforms to the outer shape of the electrical controller 200 .

[0167] The cover body 202 is fixed integrally to the board storage case 201 by fixing members such as bolts, with the electrical controller 200 nested within the inner space.

[0168] The cover body 202 has a trapezoidal shape in a side view, with the upper wall sloping downward from the middle toward the opening 202a, reducing the diameter of the opening 202a. The opening 202a of the cover body 202 functions as an insertion port through which the connection cable 210 connected to the electrical controller 200 inside the cover body 202 passes.

[0169] With the electrical controller 200 disposed on the rear surface 501e of the intercooler 500, the female coupler 203 protrudes toward the engine side beyond the left side surface 501c of the intercooler 500. The insertion opening 203a of the female coupler 203 is disposed facing further inside the combine 1 than the intercooler 500, i.e., facing the inside in the width direction of the traveling body 4.

[0170] That is, the mounting direction of the coupler of the electrical controller 200 is oriented horizontally on the inside of the traveling body 4. This configuration makes it easier to arrange the rear surface 501e of the intercooler 500 along the side surface of the case 501, improving workability.

[0171] The cover body 202 covers from the outside the female coupler 203 that protrudes from the left side surface 501c of the intercooler 500. In other words, the cover body 202 is configured to cover from the outside the main body of the electrical controller 200 provided in the intercooler 500 and the connection portion between the connection cable 210 and the electrical controller 200 (the male coupler 211 of the connection cable 210 and the female coupler 203 of the electrical controller 200 that are fitted together).

[0172] In this way, the electrical controller 200 arranged on one side of the intercooler 500 is positioned above and outward (to the left) of the engine 11 on the running body 4, and behind the cutting unit 5.

[0173] That is, the engine 11 is arranged on one side (front side 501d) of the intercooler 500 as a cooling device in the fore-and-aft direction of the running body 4, and the electrical controller 200 is arranged on the side (rear side 501e) opposite to the one side (front side 501d) of the intercooler 500 as a cooling device.

[0174] With this configuration, the electrical controller 200 can be placed away from the engine 11, which is the main source of exhaust heat, and the electrical controller 200 can be prevented from being thermally damaged by the exhaust heat generated by the engine 11.

[0175] Furthermore, the electrical controller 200 is disposed between the engine 11 in the approximately vertical and horizontal directions, with the intercooler 500, precleaner 562, and air intake pipe 563 interposed therebetween. Furthermore, as shown in FIG. 2 , the electrical controller 200 is disposed between the reaping unit 5 in the front-rear direction, with the intercooler 500 and cabin 30 interposed therebetween. Furthermore, the electrical controller 200 is disposed between the outside in the left-right direction, with the outside air intake cover 15 interposed therebetween, and the intercooler 500 is covered by the outside air intake cover 15. Furthermore, the electrical controller 200 is disposed between the cooling device and the grain tank 7.

[0176] In this way, the electrical controller 200 is kept away from the engine 11 and the reaping unit 5, and is shielded from the heat generated by the engine 11 and the dust that accompanies reaping work by the reaping unit 5 by the various functional components interposed therebetween.

[0177] In particular, the area around the intercooler 500 and radiator 14, which are arranged above and below as cooling devices, is an area where the temperature is relatively stable due to the operation of the cooling fan 540 and the cooling fan 140, and there is no risk of the electrical controller 200 being subjected to unnecessary heat exhaust load from the engine.

[0178] In addition, by covering the right side vicinity of these multiple cooling devices with an outside air intake cover 15, the electrical controller 200 is covered along with the cooling devices and isolated from the outside, thereby reducing the accumulation of dust on the connection part between the electrical controller 200 and the connection cable 210, i.e., on the outside of the female coupler 203 and male coupler 211.

[0179] Furthermore, by using a layout configuration in which the electrical controller 200 is disposed between the cooling device and the grain tank 7, the cooling atmosphere in the clearance space between the cooling device and the grain tank 7 can be utilized.

[0180] That is, in the clearance space between the cooling device and the grain tank 7, cool air is generated by the cooling fan 140 and the cooling fan 540. This cool air blows away dust from the connection part between the connection cable 210 and the electrical controller 200 to prevent accumulation, and also circulates air around the electrical controller 200 to cool the electrical controller 200.

[0181] By improving the layout configuration of the electrical controller 200, which is a precision device that is delicate to handle, in this way, it is possible to prevent malfunctions in the control of the harvesting operation system and the traveling operation system, and to achieve stable combine control while extending the life of the electrical controller itself.

[0182] The electrical controller 200 can also be disposed on one side of the radiator 14, which serves as a lower cooling device. For example, as shown in Fig. 11, it can be disposed vertically on the rear surface 14a of the radiator frame 143 of the radiator 14, directly above the reservoir tank 147. Furthermore, the position of the electrical controller 200 relative to each cooling device may be on the front surface 501d, left side surface 501c, upper surface 501b, or lower surface 501a other than the rear surface 501e.

[0183] By improving the layout of the electrical controller 200 in this way, even though it is located closer to the engine 11 than other locations, the stable temperature environment and clean environment realized by the cooling fan 540 and radiator 14 as cooling devices are utilized, thereby reducing the occurrence of malfunctions caused by heat and dust in the electrical controller 200.

[0184] The connection cable 210 serving as a harness connecting the electrical controller 200 to the engine 11 and the like has heat resistance and insulating properties, and is laid and supported along a support frame 360 ​​and a connecting frame 380, as shown in Figures 15 and 16. The connection cable 210 is connected to the electrical controller 200 at one end, branches midway and extends in multiple directions, with the other ends of the multiple branched extensions connected to the engine 11 or other components.

[0185] The connection cable 210 extends downward from the electrical controller 200 along the rear left edge of the case 501 of the intercooler 500, then folds back to the front and abuts against the left side surface 501c of the intercooler 500, and is supported by extending at an angle along the outer edge of the ventilation opening 501f.

[0186] That is, the connection cable 210 has a first cable portion 210a on the base end side that extends along the case 501 of the intercooler 500 while bypassing the ventilation opening 501f below.

[0187] The tip of the first cable portion 210a of the connection cable 210 branches into two at a position below the rotation axis of the cooling fan 540 and above the rear right support pillar 365. That is, the tip of the first cable portion 210a branches into a second cable portion 210b extending forward and a third cable portion 210c extending downward.

[0188] The second cable portion 210b is supported by extending along the front-rear extension frame 362 of the support frame 360, and is folded back to the left to be supported by extending along the front horizontal frame 361 on the front side of the frame 361.

[0189] The second cable portion 210b branches into two at the connection portion between the front horizontal frame 361 and the central front-to-rear extension frame 381. That is, the tip of the second cable portion 210b branches into a fourth cable portion 210d extending rearward along the central front-to-rear extension frame 381 of the connecting frame 380, and a fifth cable portion 210e extending leftward along the front horizontal frame 361 of the support frame 360. The third cable portion 210c is supported by extending downward along the rear right support pillar 365.

[0190] In this way, the connection cable 210 extends around each component so as to be neatly laid out along the support frame 360 ​​and the connecting frame 380, and connects to the engine 11 and other operating components such as the reaping unit 5 and threshing unit 6, as well as the controller that controls them.

[0191] That is, in accordance with the layout of the electrical controller 200 in the cooling device, the connection cable 210 connected to the electrical controller 200 is supported and arranged in an orderly manner along the support frame 360, thereby enabling compact wiring of the harness while bypassing each component around the engine 11 where each component is densely packed.

[0192] The combine harvester 1 of this embodiment, which has the above-described configuration, is less susceptible to the effects of heat generated by the engine 11, and by locating the electrical controller 200 that controls the operation of the combine harvester 1 in a location where dust and other particles are less likely to accumulate, malfunctions in the controller 200 can be prevented and the machine body can be made compact.

[0193] The above-described embodiment is an example of the present invention, and the present invention is not limited to the above-described embodiment. Therefore, even if it is not the above-described embodiment, various modifications are possible depending on the design, etc., as long as they do not deviate from the technical idea of ​​the present invention. Furthermore, the effects described in this disclosure are merely examples and are not limited, and other effects may also be obtained.

[0194] The present technology can have the following configurations (1) to (7). (1) A combine harvester having an engine disposed at the front of the running body, equipped with a cooling device for cooling the engine, and characterized in that an electrical controller for controlling the operation of the combine harvester is disposed on one side of the cooling device. (2) The combine harvester described in (1) is characterized in that the cooling device is arranged at the side end of the running body, the engine is arranged on one side of the cooling device in the fore-and-aft direction of the running body, and the electrical controller is arranged on the side opposite to the one side of the cooling device. (3) The combine harvester described in (2) is characterized in that the cooling devices are arranged in multiple positions in the vertical direction on the running body, the electrical controller is arranged in the cooling device arranged at the upper side of the multiple cooling devices, and the upper cooling device has a cooling fan and cools the air supplied to the engine. (4) The combine harvester described in (1) or (2) is characterized in that it is provided with a grain tank on the traveling body, and the electrical controller is arranged between the cooling device and the grain tank. (5) The combine harvester according to any one of (1) to (3), wherein the electrical controller is a controller for controlling the engine. (6) The combine harvester described in any one of (2) to (5) is characterized in that the electrical controller has a coupler to which the end of the harness is connected, and the coupler has an insertion port facing the inside of the traveling body in the width direction. (7) The combine harvester described in any one of (2) to (6) is characterized in that the cooling device is connected to and supported by a support frame erected on the traveling body. [Explanation of symbols]

[0195] 1. Combine 4 Running body 7 Grain Tank 11 Engine 14 Radiator (lower cooling device) 14a Rear part (one side) 140 Cooling fan 200 Electrical Controller 203 female coupler 203a Insertion port 210 Connection cable (harness) 500 Intercooler (upper cooling device) 501e Rear section (one side) 540 Cooling Fan

Claims

1. A combine harvester in which an engine is disposed at the front of the traveling body, a cooling device for cooling the engine; An electrical controller for controlling the operation of the combine is arranged on one side of the cooling device. A combine harvester characterized by:

2. The cooling device is disposed at a side end of the traveling machine body, The engine is disposed on one side of the cooling device in the front-rear direction of the traveling machine body, The electrical controller is disposed on the side opposite to the one side of the cooling device. The combine harvester according to claim 1 .

3. The cooling device is arranged in plurality in the vertical direction on the traveling machine body, the electrical controller is disposed in an upper cooling device among the plurality of cooling devices, The upper cooling device has a cooling fan and cools the air supplied to the engine. The combine harvester according to claim 1 .

4. A grain tank is provided on the traveling body, The electrical controller is disposed between the cooling device and the grain tank. The combine harvester according to claim 3 .

5. The electrical controller is a controller for controlling the engine. The combine harvester according to claim 4 .

6. the electrical controller has a coupler to which an end of a harness is connected, The coupler has an insertion port facing the inside of the traveling machine body in the width direction. The combine harvester according to claim 1 .

7. The cooling device is connected to and supported by a support frame erected on the traveling machine body. The combine harvester according to claim 1 .

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