JP2014008839A - Prime mover structure of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a prime mover structure of a working vehicle superior in cooling efficiency of a radiator and the like.SOLUTION: The problem is solved by arranging a radiator (60), for cooling coolant of an engine (20) between the engine (20) and a filter (14), in an engine room (8), arranging a fan (40), for sucking outside air through the filter (14), between the engine (20) and the radiator (60), and arranging a hydraulic continuously variable transmission (30), for transmitting rotation of the engine (20) to the fan (40), at an upper portion of the engine (20).

Description

  The present invention relates to a driving part structure of a working vehicle.

  An engine and a box-shaped cover surrounding the outer periphery of a cooling unit such as a radiator, an oil cooler, and a condenser disposed in the engine room of a work vehicle, and a plate-shaped cover that covers the opening of the box-shaped cover are disclosed. Yes. In addition, a structure is disclosed in which a condenser and an oil cooler are arranged while being shifted in a diagonal direction of the radiator in order to efficiently cool the cooling unit and facilitate installation and maintenance work of the cooling unit. (Patent Document 1)

JP 2009-1187 A

However, in the driving part in the invention described in Patent Document 1, since the intercooler and the condenser are arranged so as to overlap each other, the condenser prevents the outside air from being sucked and the temperature of the intercooler rises above a predetermined temperature. There was a risk of lowering the engine output.
In addition, since the oil cooler, intercooler, and condenser outside the radiator are arranged so as to overlap each other, sufficient outside air cannot be sucked into the outer surface of the oil cooler, and the temperature of the oil cooler exceeds a predetermined temperature. There was a risk of rising.

  Therefore, the main problem of the present invention is to eliminate such problems.

The present invention that has solved the above problems is as follows.
According to the first aspect of the present invention, an engine cover (11) having a filter body (14) is provided on the outer side of an engine room (8) in which the engine (20) is installed, and the engine ( 20) and a radiator (60) for cooling the cooling water of the engine (20) is disposed at a position between the filter body (14), and a filter body is disposed at a position between the engine (20) and the radiator (60). An oil cooler (70) that disposes a fan (40) that sucks outside air from (14) and cools hydraulic oil of a hydraulic device provided in the vehicle body is disposed between the radiator (60) and the filter body (14). And an intercooler (80) for cooling air taken into the engine (20) and an air conditioner for the cabin (6) between the oil cooler (70) and the filter body (14). Cooling the refrigerant A working vehicle driving system in which a denser (90) is disposed and a hydraulic continuously variable transmission (30) that transmits the rotation of the engine (20) to a fan (40) is disposed above the engine (20). It is a partial structure.

  In the invention according to claim 2, the hydraulic continuously variable transmission (30) is supported on an upper portion of the engine (20), and the fan (40) is rotatably supported on a lateral side portion of the engine (20). It is a drive part structure of the working vehicle of Claim 1 which supported the axis | shaft (41).

  A third aspect of the present invention is the prime mover structure of the working vehicle according to the first or second aspect, wherein the intercooler (80) and the condenser (90) are arranged to be shifted in the vertical direction.

  According to a fourth aspect of the present invention, the upper portion of the capacitor (90) is arranged so as to be biased above the upper end portion of the radiator (60) when viewed in the axial direction of the fan (40). It is a driving | running | working part structure of the working vehicle of any one of 1.

  According to a fifth aspect of the present invention, the lower end portion of the intercooler (80) is disposed in the vicinity of the lower end portion of the rotation locus of the fan (40) in the axial direction of the fan (40). The driving part structure of the working vehicle according to any one of the above.

  The invention according to claim 6 is the working vehicle according to any one of claims 1 to 5, wherein the capacitor (90) is disposed at a position closer to the filter body (14) than the intercooler (80). This is the driving part structure.

  In the invention according to claim 7, a separating plate (65) having an opening (65B) is disposed at a portion facing the radiator (60) at a portion between the radiator (60) and the oil cooler (70). It is a motive part structure of the working vehicle of any one of Claims 1-6.

  According to the first aspect of the present invention, since the hydraulic continuously variable transmission (30) for driving the fan (40) is disposed at a position above the engine (20), the hydraulic continuously variable transmission ( 30) does not become an obstacle to the blowing of cooling air by the fan (40), and the cooling efficiency of the radiator (60) and the like can be increased.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the hydraulic continuously variable transmission (30) is supported on the upper portion of the engine (20), and the lateral side portion of the engine (20) is supported. Since the input shaft (41) for rotatably supporting the fan (40) is supported by the engine, the hydraulic continuously variable transmission (30) and the input shaft (41) of the fan (40) are vibrated by the vibration of the engine (20). Since the vibrations in the same direction, the displacement of the transmission member such as a belt is reduced, and the transmission part from the hydraulic continuously variable transmission (30) to the fan (40) can be simplified in construction. The score can be reduced.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, since the intercooler (80) and the capacitor (90) are shifted in the vertical direction, the capacitor (90) And the increase in the intake resistance of the fan (40) by the intercooler (80) can be suppressed, the radiator (60) can be cooled efficiently, and the output of the engine (20) can be prevented from decreasing.

  According to the fourth aspect of the invention, in addition to the effects of the first to third aspects of the invention, the upper part of the capacitor (90) is biased upward from the upper end part of the radiator (60). The reduction in the suction efficiency of the fan (40) by the condenser (90) can be reduced, and the oil cooler (70), the radiator (60), etc. arranged inside the condenser (90) can be efficiently cooled.

  According to the fifth aspect of the present invention, in addition to the effects of the first to fourth aspects, the lower end of the intercooler (80) is disposed in the vicinity of the lower end of the rotation locus of the fan (40). The cooling efficiency of the condenser (90) and the intercooler (80) can be increased.

  According to the invention described in claim 6, in addition to the effects of the inventions described in claims 1-5, the capacitor (90) is disposed closer to the filter body (14) than the intercooler (80). Therefore, the hose which connects an intercooler (80) and an engine (20) can be arrange | positioned in the space formed inside the capacitor | condenser (80). Further, the outside air sucked by the fan (40) is retained in the space, and the oil cooler (70) can be efficiently cooled.

  According to the seventh aspect of the invention, in addition to the effects of the first to sixth aspects of the invention, an opening is provided in a portion between the radiator (60) and the oil cooler (70), in a portion facing the radiator (60). Since the separation plate (65) having the portion (65B) is arranged, it is possible to prevent dust and other intrusions from entering the part inside the separation plate (65) of the engine room (8).

It is a right view of a combine. It is a left view of a combine. It is a top view of a combine. (A) of a drive part is a principal part top view, (b) is a principal part right view, (c) is a principal part front view. It is a principal part front view of a drive part. It is a right view of a drive part. It is a principal part top view of a drive part. It is a front view of a prime mover. It is explanatory drawing of HST at the time of reverse rotation. It is explanatory drawing of HST at the time of forward rotation. (A) of HST of another driving | operation part is a principal part front view, (b) is a principal part top view, (c) is a principal part left view. It is a connection diagram of a control device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, although the direction is shown and demonstrated for convenience for easy understanding, the configuration is not limited by these.

  As shown in FIGS. 1 to 3, the combine is provided with a traveling device 2 composed of a pair of left and right crawlers for traveling on the soil surface below the machine frame 1, and threshing / sorting on the upper left side of the machine frame 1. A threshing device 3 is provided, and a reaping device 4 is provided in front of the threshing device 3 to harvest cereal grains in the field. The grain threshed and selected by the threshing device 3 is stored in a Glen tank 5 provided on the right side of the threshing device 3, and the stored grain is discharged to the outside by the discharge cylinder 7. Further, a cabin 6 having an operation unit on which an operator gets on is provided on the upper right side of the body frame 1, and an engine room 8 is provided below the cabin 6.

  4-7, the engine 20 is arrange | positioned inside the engine room 8, and the radiator 60 is arrange | positioned on the outer side (upstream side where external air is suck | inhaled) of the engine 20 with a fixed space | interval, Between the engine 20 and the radiator 60, a fan 40 that is driven forward / reversely is disposed. Further, an oil cooler 70 (oil coolers 70A and 70B) is arranged vertically on the outside of the radiator 60, an intercooler 80 is arranged on the outside of the oil cooler 70B arranged on the lower side, and the oil arranged on the upper side. Capacitors 90 are arranged outside the cooler 70A with a constant interval.

  The engine 20 is attached to the body frame 1 via an engine mount 24 to prevent transmission of vibrations generated by the engine 20, and a crankshaft 21 that is an output shaft of the engine 20 is directed inward in the left-right direction. It is extended. The rotation of the crankshaft 21 is transmitted to the hydraulic continuously variable transmission 30 installed on the upper side of the engine 20 that drives the fan 40 via a belt.

  The hydraulic continuously variable transmission (HST) 30 is a device that increases / decreases the rotation transmitted to the input shaft and switches between the forward / reverse driving state of the fan 40. The hydraulic continuously variable transmission 30 is In order to perform intake and exhaust of the fan 40 efficiently, the fan 40 is disposed on the upper left side of the engine 20 biased to the outside of the rotation locus of the fan 40. Note that rotation speed increase / decrease and forward / reverse drive state switching can be remotely operated by an operation switch or the like provided in the cabin 6.

  The rotation increased or decreased by the hydraulic continuously variable transmission 30 is transmitted to a pulley 34 supported on the end of an output shaft 33 extending outward from the hydraulic continuously variable transmission 30.

  As shown in FIG. 8, the hydraulic continuously variable transmission 30 is disposed on the upper left side of a plate 32 that is installed on the upper side of the engine 20. The left end portion of the plate 32 is fixed to a frame 31 extending to the upper left side of the engine 20, and the right end portion bent downward is fixed to the right side surface of the engine 20. Further, in order to prevent the output shaft 33 of the hydraulic continuously variable transmission 30 from being bent, the output shaft 33 is supported by support members 32 </ b> A and 32 </ b> A provided upright on the left and right sides of the plate 32.

  If the output motor 121 engaged with the front end rack of the trunnion 36 connected to the trunnion shaft 36B of the hydraulic continuously variable transmission 30 fails, the fan 40 can no longer take outside air into the engine room 8 by the fan 40. May overheat. As shown in FIGS. 9 and 10, a reverse-side stopper bolt 37 </ b> A is provided on the rear side of the trunnion 36 and can be manually rotated to move the tip portion in the front-rear direction. 37B is provided.

  When the output motor 121 has failed and the rear surface of the trunnion 36 is in contact with the tip of the reverse rotation stopper bolt 37A as shown in FIG. 9, the front surface of the trunnion 36 is rotated forward as shown in FIG. The reverse rotation stopper bolt 37A is manually rotated until it contacts the side stopper bolt 37B, the tip portion is advanced, and the trunnion 36 is rotated counterclockwise. Further, it is preferable to form a convex portion on the rear surface of the trunnion 36 with which the tip of the reverse rotation stopper bolt 37A contacts. When the rear surface of the trunnion 36 is in contact with the tip of the reverse rotation stopper bolt 37A, the cooling fan 40 is in the reverse rotation state, and the front surface of the trunnion 36 is in contact with the tip of the forward rotation stopper bolt 37B. If it is, the cooling fan 40 is in the forward rotation state.

  The hydraulic continuously variable transmission 30 is fixed to a frame 6A disposed below the cabin 6 via a support member 6B in addition to the upper left side of the plate 32 installed on the upper side of the engine 20 described above. 3 can be disposed under the cover 3A installed on the left side of the cabin 6 and the entrance funnel provided on the front side. In this case, in order to easily fit the trunnion 36 of the hydraulic continuously variable transmission 30 and the output motor 121, an arc-shaped notch is formed in a portion of the cover 3A facing the output motor 121 as shown in FIG. It is preferable to form the portion 3B.

  The rotation transmitted to the pulley 34 is transmitted to the pulley 42 via the belt 35. Further, as shown in FIG. 8, the pulley 34 is arranged to be deviated outside the rotation locus of the fan 40 in order to maintain a good flow of the outside air sucked by the fan 40.

  The pulley 42 is rotatably supported via a bearing on an input shaft 41 that extends outward from the right surface of the engine 20. As a result, the engine 20 and the pulley 42 perform substantially the same movement, so that the pulley 35 and the belt 35 wound around the pulley 42 due to vibration of the engine 20 can be prevented.

  The rotation transmitted to the pulley 42 is transmitted to the fan 40. In the forward rotation driving state, the fan 40 sucks outside air into the engine room 8 through the filter body 14 of the engine cover 11, cools the radiator 60, the engine 20, etc., and is in the reverse rotation driving state. Is a device that exhausts the internal air inside the engine room 8 through the filter body 14 and removes dust, dust and the like attached to the filter body 14 together. The fan 40 includes a blade and a central portion that supports the blade base, and a base end portion of a pulley 42 is connected to the center of the fan 40.

  A radiator 60 is disposed outside the fan 40. The radiator 60 is a device that cools the cooling water heated by the engine 20, and a lower portion of the radiator 60 is attached to the body frame 1 via a frame 66, and an upper portion is a manifold that is a cooling water path of the engine 20. It is connected. Further, a shroud 61 surrounding the fan 40 is provided inside the radiator 60 in order to increase the suction efficiency of the fan 40. The shroud 61 is preferably formed in a circular shape or a polygonal shape along the outer periphery of the fan 40, and is formed by a thin plate-shaped steel plate in order to reduce the resistance to the outside air suction by the fan 40.

An air cleaner 50 is disposed on the upper rear side of the radiator 40. The air cleaner 50 is a device that removes impurities from the air supplied to the engine 20.
In order to facilitate the maintenance and inspection of filters and the like built in the air cleaner 50, the air cleaner 50 has an intake port 50A on the outside and an exhaust port 50B on the inside, and the rear end of the air cleaner 50 is on the inside of the engine cover 11. Closely arranged. Note that an open / close cover is provided at the outer end of the air cleaner 50 so that an internal filter or the like can be attached or detached.

  A separation plate 65 made of steel or the like is disposed on the outside of the radiator 60 in order to prevent the intrusion of dust such as waste into the inside. The lower part of the separation plate 65 is attached to the frame 66, and the upper part is attached to the front and rear side frames disposed on the upper part of the engine room 8 via brackets 67 and 67. In addition, openings 65A and 65B are formed in the separation plate 65 at portions facing the right surfaces of the air cleaner 50 and the radiator 60 in order to efficiently suck in outside air.

Oil coolers 70 </ b> A and 70 </ b> B are disposed outside the separation plate 65. The oil cooler 70A is a device that cools the driving oil for the traveling hydraulic continuously variable transmission, and the oil cooler 70B is a device that cools the driving oil for the traveling mission, and is disposed outside the radiator 60. The separating plate 65 is detachably attached by a fastening member such as a bolt.
As shown in FIG. 6, the oil cooler 70 </ b> A is substantially centered in the front-rear direction of the upper part of the radiator 60 so as not to cover both front-rear ends of the upper part of the radiator 60 in order to efficiently suck in the outside air. It is arranged in the part. Similarly, the oil cooler 70B, which is smaller than the oil cooler 70A, is disposed at a substantially central portion in the front-rear direction of the lower side of the radiator 60 so as not to cover both ends of the lower side of the radiator 60 in the front-rear direction. ing. The hose 71A connecting the oil cooler 70A and the traveling hydraulic continuously variable transmission, and the hose 71B connecting the oil cooler 70B and the traveling mission are peripheral devices such as an oil radiator 60 when the hoses 71A and 71B are damaged. In order to prevent adhesion to the radiator 60, it is disposed on the lower side of the radiator 60.

  An intercooler 80 is disposed outside the oil cooler 70B. The intercooler 80 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20. The front end portion of the intercooler 80 is supported by the front frame 62A, and the rear end portion has two upper and lower portions. It is supported by the rear frame 62B via the connecting members 69C and 69C. The upper and lower portions of the front frame 62A are detachably attached to the front portion of the separation plate 65, and the upper and lower portions of the rear frame 62B are detachably attached to the rear end portion of the separation plate 65, respectively. Yes.

  As shown in FIG. 6, the intercooler 80 does not cover both ends of the lower side of the radiator 60 in the front-rear direction and efficiently covers the entire oil cooler 70 </ b> B in order to efficiently suck in the outside air. In this manner, the lower side portion of the radiator 60 is disposed biased to the rear side in the front-rear direction. Further, the lower end portion of the intercooler 80 is disposed in the vicinity of the lower end portion of the rotation trajectory of the fan 40 as viewed in the axial direction of the fan 40. The intercooler 80 is a device whose characteristics are greatly affected by temperature, and is preferably disposed outside the oil cooler 70B, which is less affected by temperature.

  The intake port 80A of the intercooler 80 is connected to the turbine-side manifold 22 of the engine 20 by a rubber hose 81, and the exhaust port 80B of the intercooler 80 is connected to the compressor-side manifold 22 of the engine 20 by a rubber hose 82. Are connected to each. The hoses 81 and 82 have flanges 81C and 82C each having a communication port attached to the separation plate 65 with an outer hose arranged outside the separation plate 65 and an inner hose arranged inside the separation plate 65 for easy installation. It is preferable to use a divided structure connected by. Further, the hoses 81 and 82 are disposed on the upper side of the radiator 60 in order to easily connect the intercooler 80 and the engine 20.

  On the outside of the oil cooler 70A, capacitors 90 are arranged at regular intervals (substantially the width dimension of the intercooler 80 in the left-right direction) in order to improve the cooling efficiency of the oil cooler 70A. The condenser 90 is a device that cools the refrigerant used in the air conditioning equipment of the cabin 6, and the front end portion of the condenser 90 is supported by the front end portion of the front frame 62 </ b> A extending beyond the intercooler 80, and the rear end portion Is supported by the front end portion of the rear frame 62B extending beyond the intercooler 80 via a connecting member 69A formed in a substantially T shape and a connecting member 69B formed in a substantially I shape.

  As shown in FIG. 6, the condenser 90 has a substantially central portion in the front-rear direction of the upper portion of the radiator 60 so as not to cover both ends in the front-rear direction of the upper portion of the radiator 60 in order to efficiently suck in outside air. Further, the upper portion of the radiator 60 and the upper portion in the vertical direction of the oil cooler 70A are biased and arranged so as to reduce the portion overlapping with the oil cooler 70A. Capacitor 90 is a device whose characteristics are greatly affected by temperature, and is preferably arranged outside oil cooler 70A, which is less affected by temperature. The upper end of capacitor 90 is the opening of separation plate 65. It is biased to the upper side than the portion 65A. In addition, the hose 91 is disposed on the upper side of the radiator 60 in order to easily connect the condenser 90 and the air conditioning equipment of the cabin 6.

In order to prevent inadvertent opening and closing of the engine cover 11, as shown in FIGS. 5 and 7, a pin 11 </ b> A for locking the lock lever 12 is provided on the front surface of the engine cover 11.
The lock lever 12 swings up and down around a shaft 12B supported by a bracket 12A of a seal case 65F provided before and after the separation plate 65. Further, in order to prevent the lock lever 12 and the pin 11A from being unlocked due to vibration during traveling, the lock lever 12 is pressed downward by a spring 12C that connects the lock lever 12 and the bracket 12A. It has been added.

A stay 11B is provided on the rear surface of the engine cover 11, and the stay 11B is rotatably supported by the cover shaft 13A. The rotating shaft 13A is provided at the tip of a cover 13B extending toward the right side from a bracket 13C provided in the seal case 65F.
When performing maintenance or the like on the inside of the engine room 8, the operator pulls the lock lever 12 forward, unlocks the lock lever 12 and the pin 11A, and focuses the front portion of the engine cover 11 around the cover shaft 13A. To the right.

  In order to easily maintain the engine room 8 and the like, the rear wall 11C of the engine cover 11 facing the left surface of the intercooler 80 from the right surface of the engine 20 is detachably fixed by a fastening member such as a bolt. As a result, when removing the dust and the like adhering to the radiator 60, the oil cooter 70A, 70B, etc. arranged in the engine room 8, the rear wall 11C can be easily removed.

  In order to easily open and close the door 6D of the cabin 6 and prevent the engine cover 11 from being inadvertently opened and closed when the door 6D is opened and closed, as shown in FIG. 7, it faces the outer periphery of the door 6D in plan view. It is preferable that the seal member 6E provided in the outer part of the cabin 6 is disposed outside the seal member 65E provided in the outer peripheral part of the separation plate 65 facing the outer periphery of the engine cover 11. Further, in order to prevent early deterioration due to the exposure of the seal member 65E and to prevent the seal member 6E from falling off, the cover 13B is disposed outside the seal member 65E disposed in the vertical direction on the cover shaft 13A side of the engine cover 11. It is preferable to do this.

  Next, a connection diagram of the control device 100 in the present embodiment will be described. On the input side of the control device 100, as shown in FIG. 12, a human sensor 110 that detects the presence or absence of an operator around the engine room 8, a water temperature sensor 111 that measures the temperature of cooling water that cools the engine 20, A temperature sensor 112 for measuring the temperature of the air supplied to the engine 20 is connected.

  On the other hand, on the output side of the control device 100, the input motor 120 that switches the trunnion shaft 36B of the hydraulic continuously variable transmission 30 to the neutral / inclined state, and the fan 40 that rotates the trunnion shaft 36B of the hydraulic continuously variable transmission 30 forwardly. An output motor 121 is connected to switch to the forward-side tilt for driving and the reverse-side tilt for driving the fan 40 in the reverse direction.

  After the input motor 120 is driven to move the trunnion shaft 36B to the inclined state and the forward rotation / reverse rotation driving of the fan 40 is started, the presence of an operator working around the engine room 8 is confirmed by the human sensor 110. In such a case, the output motor 121 is driven to incline the trunnion shaft 36B to the positive side and maintain the forward rotation state of the fan 40. On the other hand, if the presence of the operator is not confirmed by the human sensor 110, the output motor 121 is driven and moved to the forward / reverse side inclination of the trunnion shaft 36B at every predetermined time to forward / reverse the fan 40. Maintain drive status.

  After driving the output motor 121 and moving the trunnion shaft 36B to the forward / reverse inclination of the trunnion shaft 36B every predetermined time to maintain the forward / reverse drive state of the fan 40, the coolant temperature is set to a predetermined level by the water temperature sensor 111. When the temperature rises to about 85 to 97 ° C. or more, the output motor 121 is driven to increase the forward / reverse inclination angle to speed up the rotation of the fan 40, and the cooling water temperature is increased. When the temperature rises above the temperature (about 98 ° C.), the output motor 121 is driven to incline the trunnion shaft 36B to the positive side and maintain the forward rotation state of the fan 40. On the other hand, when the temperature of the cooling water is equal to or lower than a predetermined temperature (about 85 ° C.) by the water temperature sensor 111, the output motor 121 is continuously driven to tilt the forward and reverse sides of the trunnion shaft 36B every predetermined time. And the forward / reverse drive state of the fan 40 is maintained.

  The air supplied to the engine 20 by the temperature sensor 112 after driving the output motor 121 and moving the trunnion shaft 36B to the forward / reverse inclination of the trunnion shaft 36B every predetermined time to maintain the forward / reverse drive state of the fan 40. When the temperature rises above a predetermined temperature (about 65 to 71 ° C.), the output motor 121 is driven to increase the angle of the forward / reverse inclination to speed up the rotation of the fan 40 and further cool down. When the temperature of the water rises to a high temperature (about 72 ° C.) or higher, the output motor 121 is driven to incline the trunnion shaft 36B to the positive side and maintain the forward rotation state of the fan 40. On the other hand, when the temperature of the air is below a predetermined temperature (about 64 ° C.) by the temperature sensor 112, the output motor 121 is continuously driven so that the trunnion shaft 36B is inclined forward or reverse at predetermined time intervals. It moves to maintain the forward / reverse drive state of the fan 40.

  The present invention can be applied to agricultural work vehicles.

6 Cabin 8 Engine room 11 Engine cover 11A Pin 11B Stay 12 Lock lever 13A Cover shaft 14 Filter body 20 Engine 30 Hydraulic continuously variable transmission (HST)
40 Fan 41 Input shaft 60 Radiator 65 Separating plate 65B Opening 70 Oil cooler 80 Intercooler 90 Condenser

Claims (7)

An engine cover (11) having a filter body (14) is provided on the outer side of the engine room (8) in which the engine (20) is installed,
A radiator (60) for cooling the cooling water of the engine (20) is disposed in a portion between the engine (20) and the filter body (14) in the engine room (8),
A fan (40) for sucking outside air from the filter body (14) is disposed at a position between the engine (20) and the radiator (60), and is disposed at a position between the radiator (60) and the filter body (14). Is provided with an oil cooler (70) for cooling the hydraulic oil of the hydraulic equipment provided in the vehicle body, and the air sucked into the engine (20) is disposed between the oil cooler (70) and the filter body (14). An intercooler (80) for cooling the air conditioner and a condenser (90) for cooling the refrigerant of the air conditioner for the cabin (6),
A working part drive structure for a working vehicle in which a hydraulic continuously variable transmission (30) for transmitting the rotation of the engine (20) to a fan (40) is disposed above the engine (20).   The hydraulic continuously variable transmission (30) is supported on the upper part of the engine (20), and the input shaft (41) for rotatably supporting the fan (40) is supported on the lateral side of the engine (20). Item 4. A driving part structure of a working vehicle according to Item 1.   The driving | running | working part structure of the working vehicle of Claim 1 or 2 which has arrange | positioned the said intercooler (80) and a capacitor | condenser (90) shifting up and down.   The upper part of the said capacitor | condenser (90) is biased and arrange | positioned above the upper end part of the radiator (60) in the axial direction view of the said fan (40), The one of Claims 1-3 characterized by the above-mentioned. The structure of the driving part of the working vehicle.   The lower end part of the said intercooler (80) is arrange | positioned in the axial center direction view of the said fan (40), and has arrange | positioned in the vicinity of the lower end part of the rotation locus | trajectory of this fan (40). The structure of the driving part of the working vehicle.   The work part drive structure according to any one of claims 1 to 5, wherein the capacitor (90) is disposed closer to the filter body (14) than the intercooler (80).   The separator (65) according to any one of claims 1 to 6, wherein a separation plate (65) having an opening (65B) is disposed at a portion facing the radiator (60) at a portion between the radiator (60) and the oil cooler (70). 2. A driving part structure of a working vehicle according to item 1.

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