JP2012126325A - Prime mover structure of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a prime mover structure of a working vehicle which excels in cooling efficiency of an engine, and facilitates maintenance and inspection.SOLUTION: A radiator (80) is arranged on the outer side of the engine (20), a filter body (12) is arranged on the outer side of the radiator (80), and a fan (40) is arranged between the engine (20) and the radiator (80). A hydraulic continuously variable transmission (30) capable of forward and reverse rotation output is provided to shift the driving force of the engine (20) and drive the fan (40). The hydraulic continuously variable transmission (30) is arranged to be biased to the outer side of a rotation path of the fan (40) when viewed from the direction of the rotational axis of the fan (40).

Description

  The present invention relates to a driving part structure of a working vehicle in which a radiator, a cooling fan, a hydraulic continuously variable transmission, and an engine are arranged in a limited space of an engine room of the working vehicle.

  In order to save space in the engine room of the combine, Patent Document 1 discloses a driving unit structure in which a radiator, a cooling fan, a hydraulic continuously variable transmission, and an engine are arranged in parallel in the engine room from the outside to the inside of the body. Has been.

JP 2008-88823 A

However, in the technique disclosed in Patent Document 1, a hydraulic continuously variable transmission is disposed between the engine and the engine, and the input shaft of the hydraulic continuously variable transmission is positioned inside the body facing the engine. Since the output shaft is positioned outside the airframe facing the cooling fan, the width of the engine room as viewed from the front of the airframe is increased. Therefore, the engine room protrudes outward from the machine body, and there is a problem that the outer part of the engine room easily interferes with the obstacle when turning in a work environment where there are many obstacles around.
Further, when the outside air sucked by the cooling fan is blown toward the engine, there is a problem that the hydraulic continuously variable transmission becomes an obstacle and the cooling efficiency of the engine is lowered.
Further, since the hydraulic continuously variable transmission is disposed between the engine and the cooling fan, there is a problem that it is difficult to perform maintenance on the hydraulic continuously variable transmission.
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, a radiator (80) is disposed at a portion outside the engine (20), a filter body (12) is disposed at a portion outside the radiator (80), and the engine (20) A fan (40) is arranged between the radiators (80),
A hydraulic continuously variable transmission (30) capable of forward / reverse output to drive the fan (40) by shifting the driving force of the engine (20);
With the speed change operation of the hydraulic continuously variable transmission (30), the fan (40) is driven to rotate in the forward direction to suck the outside air from the outside of the filter body (12), and the fan (40) It is configured to be switchable between a dust-removed state that reversely drives and blows wind from the inside to the outside of the filter body (12),
The driving part of the working vehicle, characterized in that the hydraulic continuously variable transmission (30) is arranged so as to be biased outside the rotation locus of the fan (40) as viewed from the direction of the rotational axis of the fan (40). Structure.

According to a second aspect of the present invention, the driving force from the output shaft (21) of the engine (20) is near the center of gravity of the projected shape of the radiator (80) when viewed from the direction of the rotational axis of the fan (40). The intermediate shaft (71) supported on the engine (20) side portion of the engine is transmitted to the hydraulic continuously variable transmission (30) from the intermediate shaft (71).
2. The driving part structure of a working vehicle according to claim 1, wherein the fan (40) is rotatably supported by the intermediate shaft (71).

  The invention according to claim 3 is characterized in that the rotational direction of the intermediate shaft (71) by the driving force of the engine (20) and the rotational direction of the fan (80) in the cooling state are set in the same direction. The working part structure for a working vehicle according to claim 1 or 2.

The invention according to claim 4 is provided with a cabin (9) surrounding the steering section above the engine (20),
The motive power structure of the working vehicle according to any one of claims 1 to 3, wherein the hydraulic continuously variable transmission (30) is disposed on the upper front side of the engine (20).

  The work according to any one of claims 1 to 3, wherein the hydraulic continuously variable transmission (30) is arranged on the upper rear side of the engine (20). This is the structure of the driving part of the vehicle.

The invention according to claim 6 is provided with a cabin (9) that surrounds the steering section above the engine (20),
4. The motive power structure of a working vehicle according to claim 1, wherein the hydraulic continuously variable transmission (30) is disposed on the lower front side of the engine (20). 5.

  According to a seventh aspect of the present invention, the hydraulic continuously variable transmission (30) is disposed at a lower front side of the engine (20) and below a step (95) in the cabin (9). The driving part structure for a working vehicle according to claim 6.

  The invention according to claim 8 is the work according to any one of claims 1 to 3, wherein the hydraulic continuously variable transmission (30) is arranged on the lower rear side of the engine (20). This is the structure of the driving part of the vehicle.

  According to the ninth aspect of the present invention, a working part (7) that can be opened outward is disposed in a rear part of the engine room (10) that houses the engine (20), and the working part (7) 9. The driving part structure for a working vehicle according to claim 8, wherein the hydraulic continuously variable transmission (30) is disposed between the engine room (10) and the engine room (10).

According to the first aspect of the present invention, since the hydraulic continuously variable transmission (30) is installed so as to be biased outside the rotation locus of the fan (40), the hydraulic continuously variable transmission (30) is provided with a cooling fan ( Therefore, the cooling efficiency of the engine (20) can be increased.
Further, the fan (40) can be disposed close to the engine (20), and the left and right width of the prime mover can be configured compactly. It is possible to travel smoothly while preventing interference.
Further, the radiator (80) and the fan (40), and the engine (20) and the fan (40) can be brought close to each other, and the cooling air from the fan (40) is effectively applied to the radiator (80) and the engine (20). By acting, the cooling efficiency of the engine (20) can be increased.

  According to the second aspect of the present invention, in addition to the effect of the first aspect, the driving force from the output shaft of the engine (20) is seen from the direction of the rotation axis of the fan (40). ) Is input to the intermediate shaft (71) supported on the engine (20) side part in the vicinity of the center of gravity of the projected shape of the projection shape, and the driving force is transmitted from the intermediate shaft (71) to the hydraulic continuously variable transmission (30). Since the fan (40) is rotatably supported on the intermediate shaft (71), the cooling air or dust removal air of the fan (40) can be blown over a wide range with respect to the radiator (80). 80) cooling efficiency is increased.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, the rotation direction of the intermediate shaft (71) by the driving force of the engine (20) and the rotation direction of the fan (40) in the cooling state. Are set in the same direction, the relative rotational speed difference between the intermediate shaft (71) and the fan (40) is reduced, the wear of the bearing of the fan (40) can be prevented, and the durability can be improved.

  According to the fourth aspect of the present invention, in addition to the effects of the first to third aspects of the invention, the cabin (9) that surrounds the steering section is provided above the engine (20), and the upper front side of the engine (20). Since the hydraulic continuously variable transmission (30) is disposed in the cabin, the hydraulic continuously variable transmission (30) can be easily maintained and inspected from the cabin (9).

  According to the fifth aspect of the present invention, in addition to the effects of the first to third aspects of the invention, the hydraulic continuously variable transmission (30) is disposed on the upper rear side of the engine (20). 20) Maintenance and inspection of the hydraulic continuously variable transmission (30) can be easily performed from the rear side.

According to the sixth aspect of the invention, in addition to the effects of the first to third aspects of the invention, the cabin (9) surrounding the steering section is provided above the engine (20), and the lower front side of the engine (20) is provided. Since the hydraulic continuously variable transmission (30) is disposed on the engine (20), when the hydraulic continuously variable transmission (30) is integrally fixed to the engine (20), the center of gravity of the engine (20) is lowered. Thus, vibration can be reduced and vibration transmitted to the operator seated in the cabin (9) can be reduced.
Further, since the distance between the operator sitting in the cabin (9) and the hydraulic continuously variable transmission (30) is large, the noise generated in the hydraulic continuously variable transmission (30) transmitted to the operator. Can be reduced.

  According to the seventh aspect of the present invention, in addition to the effects of the first to third and sixth aspects of the invention, the lower part of the engine (20) and the lower part of the step (95) in the cabin (9). Since the hydraulic continuously variable transmission (30) is arranged in the front, the maintenance and inspection of the hydraulic continuously variable transmission (30) can be easily performed from the opening portion of the step (95) without opening the cabin (9). Can be done.

According to the eighth aspect of the invention, in addition to the effects of the first to third aspects, the hydraulic continuously variable transmission (30) is disposed on the lower rear side of the engine (20). 20) Maintenance and inspection of the hydraulic continuously variable transmission (30) can be easily performed from the rear side.
Further, since the distance between the operator sitting in the cabin (9) and the hydraulic continuously variable transmission (30) is large, the noise generated in the hydraulic continuously variable transmission (30) transmitted to the operator. Can be reduced.

  According to the ninth aspect of the present invention, in addition to the effects of the first to third and eighth aspects of the present invention, the working portion (7) that can be opened outward is provided at the rear portion of the engine room (10). Since the hydraulic continuously variable transmission (30) is disposed between the working unit (7) and the engine room (10), the rear working unit (7) of the cabin (9) is opened. Thus, maintenance and inspection of the hydraulic continuously variable transmission (30) can be performed more easily.

It is a right view of the combine of 1st Embodiment. It is a left view of the combine of 1st Embodiment. It is a top view of the combine of 1st Embodiment. It is an expansion right view of the engine room of 1st Embodiment. It is an enlarged front view of the drive part of 1st Embodiment. It is a principal part enlarged front view of the drive part of 1st Embodiment. It is a right view of the drive part of 1st Embodiment. It is a right view of the drive part at the time of clutch operation | movement of 1st Embodiment. It is a power transmission diagram of the drive part of 1st Embodiment. It is a power transmission diagram of the combine of 1st Embodiment. It is a hydraulic circuit diagram of a hydraulic continuously variable transmission. It is explanatory drawing of a hydraulic continuously variable transmission. It is an enlarged front view of the drive part of 1st Embodiment. It is a right view of the drive part of 2nd Embodiment. It is a right view of the drive part of 3rd Embodiment. It is a right view of the drive part of 4th Embodiment. It is a right view of the drive part of 5th Embodiment. It is a right view of the drive part of 6th Embodiment. It is an enlarged front view of the drive part of 7th Embodiment. It is a power transmission diagram of the drive part of 7th Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a driving part structure of a working vehicle according to the present invention will be described with reference to the accompanying drawings. In the embodiment, the combine is exemplified as the work vehicle, but the combine is not limited to the combine. The embodiment can also be applied to agricultural work vehicles such as a tractor and a rice transplanter.

  In the following description, the inner side of the combine 1 is referred to as “inside” and the outer side is referred to as “outside”. The right hand side as viewed from the operator seated in the operation seat (not shown) in the cabin 9 is referred to as “right side”. The side is called “left side”, the upper side is called “upper”, the lower side is called “lower”, the traveling direction of the combine is called “front side”, and the backward direction is called “rear side”.

  The “forward drive state” refers to the rotation direction of the cooling fan (fan) 40 that sucks outside air from the outside to the inside, and the “reverse drive state” refers to the rotation of the cooling fan 40 that blows the inside air from the inside to the outside. The “non-driving state” refers to a resting state of the fan in which the cooling fan 40 is not rotating forward or reverse.

That is, the “forward rotation driving state” in the cooling fan 40 described later is the state in which the engine 20 and the radiator 80 are connected from the outside through the filter body 12 made of a hollow iron plate or the like of the engine cover 11 as shown by S1 in FIG. The direction of rotation of the cooling fan 40 that sucks and blows outside air is referred to. The “reverse driving state” in the cooling fan 40 is a filter body made of a steel plate or the like of the engine cover 11 as shown by S2 in FIG. The rotation direction of the cooling fan 40 that exhausts and blows the inside air from the inside toward the outside of the combine 1 through 12.
Further, as shown in FIG. 6, the cooling fan 40 is switched to the forward drive state, the non-drive state, and the non-drive state by rotating the trunnion shaft 115 of the hydraulic continuously variable transmission 30 by the arm 116. .

  “Inward” refers to an internal area partitioned by the engine room 10, and “outward” refers to an exterior of the area partitioned by the engine room 10.

1 to 3 show a combine 1 having the prime structure of the present invention. Below the chassis 2 of the combine 1 is provided a traveling device 3 comprising a pair of left and right crawlers for traveling on the soil surface, and on the upper left side of the chassis 2 is provided a threshing device 4 for threshing and sorting, A reaping device 6 is provided on the front side of the threshing device 4.
The reaper is cut by a cutting blade (not shown) provided in the reaping device 6 and sent to the threshing device 4. The grain threshed and selected by the threshing device 4 is stored in a glen tank (working unit) 7 provided on the right side of the threshing device 4, and the stored grain is discharged to the outside by the grain discharge cylinder 8.
On the upper right side of the chassis 2, a cabin 9 having an operation seat on which an operator gets on is provided, and below the cabin 9, an engine room 10 is provided.

As shown in FIG. 4, the cabin 9 is provided with an operating lever 14 for switching the driving state of the cooling fan 40, and the engine cover 11 of the engine room 10 has filter bodies 12A, 12B, 12C, 12D made of a hollow iron plate or the like. Is provided.
Further, the filter bodies 12A, 12B, 12C and 12D of the engine cover 11 can have the same mesh, but the filter bodies 12A and 12D which are not provided facing the cooling fan 40 have a larger mesh. It is preferable to reduce the mesh of the filter bodies 12B and 12C provided to face the cooling fan 40.

  Next, a description will be given of a first embodiment of a prime mover structure of a working vehicle according to the present invention.

  As shown in FIGS. 5 to 8, in the first embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and an engine 20 are arranged inside the engine cover 11 of the engine room 10 in order from the outside. The hydraulic continuously variable transmission 30 is disposed on the upper front side of the engine 20 in the engine room 10 so as to be biased to the outside of the rotation locus of the cooling fan 40.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The intercooler 90 is detachably attached to a support member 83 provided outside the radiator 80, and the upper portion of the intercooler 90 is supported by a rotation support member 92 via a connecting member 91. By rotating the support member 92 in the clockwise direction, the intercooler 90 is opened upward and outward as indicated by S3 in FIG. Therefore, maintenance / inspection operations such as cleaning of the radiator 80 and removal of dust and dust adhering to the outside of the radiator 80 can be easily performed.

  The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90. Note that a plurality of oil coolers 85 may be provided for each application.

The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The radiator 80 is disposed between the intercooler 90 and the oil cooler 85 and the cooling fan 40, and a support member 83 for attaching the intercooler 90 and the oil cooler 85 is provided on the outside of the radiator 80, and on the inside of the radiator 80. In order to increase the suction efficiency of the cooling fan 40 described later, a shroud 81 surrounding the cooling fan 40 is provided.
The shroud 81 is preferably formed in a circular shape or a polygonal shape along the outer periphery of the cooling fan 40, and is formed by a thin plate-like steel plate in order to reduce the resistance to the intake of outside air by the cooling fan 40. .

The cooling fan 40 sucks outside air from the outside to the inside through the filter body 12 of the engine cover 11 in the forward rotation driving state, cools the radiator 80 and the engine 20, and in the reverse rotation driving state, It is a device that exhausts the inside air from the inside of the machine body to the outside of the machine body through the filter body 12 of the engine cover 11 and removes dust, dust and the like attached to the filter body 12.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported. The input shaft 41 of the cooling fan 40 is rotatably supported by an input shaft (intermediate shaft) 71 of a water pump 70 described later via a bearing 43.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket provided on an upper reinforcing frame whose both ends are fixed to the operation frame of the engine room 10 and the engine rear frame, and is disposed on the upper front side of the engine 20.

An input shaft 31 that pivotally supports a pulley 32 to which the rotation of the engine 20 is transmitted is provided outside the hydraulic continuously variable transmission 30, and a hydraulic continuously variable transmission is provided inside the hydraulic continuously variable transmission 30. A gear box for outputting the rotation increased or decreased by the device 30 is provided.
The gear box transmits the rotation to the output shaft 33 that outputs the increased / decreased rotation, the gear 34 that is supported by the output shaft 33, the intermediate shaft 35, and the gear 36 that is supported by the intermediate shaft 35. The output shaft 38 and the gear 37 supported by the intermediate shaft 38 are configured, and the gear 34 and the gear 36 and the gear 36 and the gear 37 are engaged with each other. In the first embodiment, gears 34, 36, and 37 having the same module diameter are used. However, gears 34, 36, and 37 having different module diameters can be used, and in this case, the gear box is used. Also in step 1, the rotation speed can be increased or decreased.

Depending on the model of the hydraulic continuously variable transmission 30, in the hydraulic continuously variable transmission 30 according to the first embodiment, the operation provided in the cabin 9 is used to bring the cooling fan 40 into the forward rotation driving state. To shorten the operating rod 117 remotely operated by the lever, rotate the arm 116 pivotally supported on the trunnion shaft 115 of the hydraulic continuously variable transmission 30 in the clockwise direction, and bring the cooling fan 40 into the reverse drive state. The operation rod 117 is extended and the arm 116 pivotally supported on the trunnion shaft 115 of the hydraulic continuously variable transmission 30 is rotated counterclockwise.
In order to bring the cooling fan 40 into a non-driven state, the operating rod 117 is returned to the neutral position, and the arm 116 pivotally supported by the trunnion shaft 115 of the hydraulic continuously variable transmission 30 is positioned in the clockwise direction at 12:00. By doing.

As shown in FIG. 11, the inflow pipe 110 and the outflow pipe 111 of the hydraulic continuously variable transmission 30 are connected to a hydraulic circuit between the hydraulic valve device 200 and the oil cooler 85, respectively. Since the drive oil that has flowed out of the hydraulic continuously variable transmission 30 is cooled by the oil cooler 85, it is not necessary to provide a dedicated refrigerant charge pump in the hydraulic continuously variable transmission 30.
The driving oil flows into the traveling hydraulic continuously variable transmission 151 through the filter 202 that removes suspended matter and the like from the oil tank 201, and part of the driving oil that flows into the traveling hydraulic continuously variable transmission 151. The oil flows from the traveling hydraulic continuously variable transmission 151 into the hydraulic valve device 200 having a lifting cylinder and a work valve that drives the transmission, and then from the hydraulic valve device 200 to the hydraulic continuously variable transmission 30 and the oil cooler. It flows again into the oil tank 201 via 85.
Further, a part of the driving oil that has flowed into the traveling hydraulic continuously variable transmission 151 is transmitted from the traveling hydraulic continuously variable transmission 151 via the filter 202 and the diverter valve 204 to the cutting hydraulic continuously variable transmission 191. And then flows from the cutting hydraulic continuously variable transmission 191 into the oil tank 201.

As shown in FIG. 12, the hydraulic continuously variable transmission 30 includes a stationary hydraulic pump 112 connected to the input shaft 31 and a variable hydraulic motor 113 connected to the output shaft 33. In order to increase or decrease the rotation transmitted to the input shaft 31 and output it to the output shaft 33, the inclination angle of the swash plate 44 of the variable hydraulic pump 112 that is remotely operated by an operation lever provided in the cabin 9 is changed.
In the hydraulic continuously variable transmission 30 according to the first embodiment, the stationary hydraulic motor 113 is connected to the output shaft 31, but the variable hydraulic motor 113 can also be used. The rotation transmitted to the shaft 33 can be increased and decreased over a wide range.

  Next, the engine power system will be described.

  As shown in FIG. 9, the rotation of the engine 20 is transmitted to the generator 60 that starts the generator and the water pump 70 that circulates the cooling water to the engine 20, so that it is supported by the output shaft 21 of the engine 20 and the output shaft 21. The pulley 22 that rotates integrally, the pulley 62 that is supported by the input shaft 61 of the generator 60 and that rotates together with the input shaft 61, and the input shaft 71 that is supported by the input shaft 71 of the water pump 70. The belt 51 is wound around the rotating pulley 72.

In order to transmit the rotation of the engine 20 transmitted to the input shaft 71 of the water pump 70 to the hydraulic continuously variable transmission 30 for switching the driving state of the cooling fan 40 and increasing / decreasing the rotation speed, the input shaft 71 of the water pump 70 is transmitted. A pulley 73 that is pivotally supported by the input shaft 71 and rotated integrally with the input shaft 71 and a pulley 32 that is pivotally supported by the input shaft 31 of the hydraulic continuously variable transmission 30 and rotates integrally with the input shaft 31 include a belt 52. Is wrapped around.
Further, the rotation of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30 is switched in the direction of rotation within the hydraulic continuously variable transmission 30 and is increased or decreased. 30 is transmitted to the output shaft 33 and is transmitted to the output shaft 38 via the chias 34, 36, and 37 that mesh with each other.

In order to transmit the rotation of the engine 20 transmitted to the output shaft 38 of the hydraulic continuously variable transmission 30 to the cooling fan 40, it is supported by the output shaft 38 of the hydraulic continuously variable transmission 30 and integrated with the output shaft 38. A belt 53 is wound around a pulley 39 that rotates and a pulley 42 that is supported by the input shaft 41 of the cooling fan 40 and rotates integrally with the input shaft 41.
Further, the input shaft 41 of the cooling fan 40 is rotatably supported by the input shaft 71 of the water pump 70 via the bearing 43.

As shown in FIGS. 7 and 8, the tension of the belt 52 can be adjusted by the tension clutch 130. On the other hand, the tension of the belt 53 is constantly pressed and tensioned by the tension roller 140 attached to the tip of the arm 141.
The tension clutch 130 includes a tension roller 131 that presses the belt 52, an arm 132 that supports the tension roller 131 and rotates about the support member 133, an electric motor 136 that rotates about the support member 133, and an electric motor. The connecting member 135 is attached to the output shaft 136 and performs a crank motion, and the coil spring 134 connects the arm 132 and the connecting member 135.
In order to loosen the tension of the belt 52, the electric motor 136 remotely operated by an operation lever provided in the cabin 9 is rotated to move the connecting member 135 to the front side, and the arm 132 is moved clockwise around the support member 133. It is performed by rotating and weakening the pressure of the tension roller 131. On the other hand, in order to increase the tension of the belt 52, the electric motor 136 is rotated to move the connecting member 135 to the rear side, and the arm 132 is rotated counterclockwise around the support member 133 to press the tension roller 131. Do it by strengthening.
It is preferable to synchronize with the driving state of the cooling fan 40 in the hydraulic continuously variable transmission 30 and loosen the tension of the belt 52. In such a case, the driving state of the cooling fan 40 can be switched smoothly, and the belt The durability of 52 is also improved.

  Next, the power system of the combine will be described.

As shown in FIG. 10, since the rotation of the engine 20 is transmitted to the traveling hydraulic continuously variable transmission 151, the rotation of the engine 20 is supported by the output shaft 21 of the engine 20 and integrated with the output shaft 21. A belt is wound around the rotating pulley 23 and the pulley 152 that is supported by the input shaft of the transmission 150 and rotates integrally with the input shaft.
The rotation of the engine 20 transmitted to the input shaft of the transmission 150 is transmitted to the traveling hydraulic continuously variable transmission 151 via the output shaft of the transmission 150.

In order to transmit the rotation of the engine 20 to the sorting device unit 185, the pulley 23 supported by the output shaft 21 of the engine 20 and the input shaft 162 of the gear box 163 are rotated integrally with the input shaft 162. A belt is wound around the pulley 161. Note that the rotation of the engine 20 is transmitted to the pulley 161 only when the threshing clutch 160 is input.
The rotation of the engine 20 transmitted to the pulley 161 is transmitted to a pulley 166 that is supported by the intermediate shaft 165 of the gear box 163 and rotates integrally with the intermediate shaft 165.
A belt is wound around the pulley 166 and a pulley that is supported by the input shaft 186 of the sorting device unit 185 and rotates integrally with the input shaft 186, and the rotation of the engine 20 transmitted to the pulley 166 is as follows: It is transmitted to the sorting device unit 185.

In order to transmit the rotation of the engine 20 to the threshing unit 180, the rotation of the engine 20 transmitted to the pulley 161 is supported by the pulley 168 that is supported by the output shaft 167 of the gear box 163 and rotates integrally with the output shaft 167. Be transmitted.
A belt is wound around the pulley 168 and the pulley 182 that is supported by the input shaft 181 of the threshing device unit 180 and rotates integrally with the input shaft 181, and the rotation of the engine 20 transmitted to the pulley 168 is rotated. The power is transmitted to the threshing device unit 180.

In order to transmit the rotation of the engine 20 to the reaping device section 190, the rotation of the engine 20 transmitted to the pulley 161 is transmitted to the reaping hydraulic continuously variable transmission 191 via the output shaft 169 of the gear box 163.
The rotation of the engine 20 transmitted to the mowing hydraulic continuously variable transmission 191 is transmitted to the output shaft 192 and transmitted to the input shaft 195 of the mowing device section 190 via a plurality of mutually meshing gears 193. It is transmitted to the device unit 190.

In the first embodiment, since the hydraulic continuously variable transmission 30 is disposed on the upper front side of the engine 20 in the peripheral portion that does not overlap the cooling fan 40 of the engine room 10, the hydraulic continuously variable transmission 30. However, the cooling efficiency of the engine 20 can be improved without hindering the blowing of outside air sucked by the cooling fan 40, and the soot adhering to the filter body 12 without hindering blowing of the inside air discharged by the cooling fan 40. The removal efficiency of dust and dust can be increased, and the maintenance and inspection of the hydraulic continuously variable transmission 30 can be easily performed from the cabin 9.
Further, since the belts 51, 52, 53 are arranged outside the engine 20 and the hydraulic continuously variable transmission 30, maintenance and inspection can be easily performed by opening the engine cover 11 of the engine room 10. it can.
Further, the downward pulling force of the belt 51 wound around the pulleys 22, 62, 72 around the input shaft 71 of the water pump 70 and the pulleys 32, 73 against the input shaft 71 of the water pump 70 are applied. The bending force generated in the input shaft 71 of the water pump 70 can be suppressed by canceling out the tensile force toward the upper front side by the wound belt 52.

  Next, a description will be given of a second embodiment of the prime mover structure of the working vehicle of the present invention. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 14, in the second embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and the engine 20 are arranged inside the engine cover 11 in the engine room 10 in order from the outside. A hydraulic continuously variable transmission 30 is arranged on the upper rear side of the engine 20 in the engine room 10 so as to be biased outside the rotation locus of the cooling fan 40.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90.
The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket provided on an upper reinforcing frame whose both ends are fixed to an operation frame and an engine rear frame of the engine room 10, and is mounted on an upper rear side of the engine 20 in the engine room 10. Has been placed.

In the second embodiment, the hydraulic continuously variable transmission 30 is disposed on the upper rear side of the engine 20 in the peripheral portion that does not overlap with the cooling fan 40 of the engine room 10. The filter 30 of the engine cover 11 does not become an obstacle to the blowing of the outside air sucked by the cooling fan 40 and can improve the cooling efficiency of the engine 20, and does not become an obstacle to the blowing of the inside air discharged by the cooling fan 40. Therefore, the efficiency of removing the dust and dust adhering to 12 can be increased, and the maintenance and inspection of the hydraulic continuously variable transmission 30 can be easily performed from the rear side of the engine 20.
Further, since the belts 51, 52, 53 are arranged outside the engine 20 and the hydraulic continuously variable transmission 30, maintenance and inspection can be easily performed by opening the engine cover 11 of the engine room 10. it can.

  Next, a description will be given of a third embodiment of the prime mover structure of the working vehicle of the present invention. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 15, in the third embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and the engine 20 are arranged inside the engine cover 11 in the engine room 10 in order from the outside. A hydraulic continuously variable transmission 30 is arranged on the lower front side of the engine 20 in the engine room 10 so as to be biased outside the rotation locus of the cooling fan 40.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90.
The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket provided on the operation frame of the engine room 10 and is disposed on the lower front side of the engine 20 in the engine room 10.

In the third embodiment, the hydraulic continuously variable transmission 30 is disposed on the lower front side of the engine 20 in the peripheral portion that does not overlap with the cooling fan 40 of the engine room 10. However, the cooling efficiency of the engine 20 can be improved without hindering the blowing of outside air sucked by the cooling fan 40, and the filter body 12 of the engine cover 11 can be improved without hindering blowing of the inside air discharged by the cooling fan 40. It is possible to improve the efficiency of removing the dust and dust adhering to the surface.
Further, since the belts 51, 52, 53 are arranged outside the engine 20 and the hydraulic continuously variable transmission 30, maintenance and inspection can be easily performed by opening the engine cover 11 of the engine room 10. it can.
Further, since the distance between the operator sitting in the cabin 9 and the hydraulic continuously variable transmission 30 is large, the noise of the hydraulic continuously variable transmission 30 transmitted to the operator can be reduced. When the hydraulic continuously variable transmission 30 is integrally fixed to the engine 20, the center of gravity of the engine 20 is lowered, so that vibration of the engine 20 transmitted to the operator can be reduced.

  Next, a description will be given of a fourth embodiment of the prime mover structure of the working vehicle of the present invention. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 16, in the fourth embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and the engine 20 are arranged inside the engine cover 11 in the engine room 10 in order from the outside. A hydraulic continuously variable transmission 30 is arranged on the lower rear side of the engine 20 in the engine room 10 so as to be biased outside the rotation locus of the cooling fan 40.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90.
The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket provided on an engine rear frame of the engine room 10 and is disposed on the lower rear side of the engine 20 in the engine room 10.

In the fourth embodiment, the hydraulic continuously variable transmission 30 is disposed on the lower rear side of the engine 20 in the peripheral portion that does not overlap with the cooling fan 40 of the engine room 10. The filter 30 of the engine cover 11 does not become an obstacle to the blowing of the outside air sucked by the cooling fan 40 and can improve the cooling efficiency of the engine 20, and does not become an obstacle to the blowing of the inside air discharged by the cooling fan 40. Therefore, the efficiency of removing the dust and dust adhering to 12 can be increased, and the maintenance and inspection of the hydraulic continuously variable transmission 30 can be easily performed from the rear side of the engine 20.
Further, since the belts 51, 52, 53 are arranged outside the engine 20 and the hydraulic continuously variable transmission 30, maintenance and inspection can be easily performed by opening the engine cover 11 of the engine room 10. it can.
Furthermore, since the distance between the operator sitting in the cabin 9 and the hydraulic continuously variable transmission 30 is large, the noise of the hydraulic continuously variable transmission 30 transmitted to the operator can be reduced.

  Next, a description will be given of a fifth embodiment of the prime mover structure of the working vehicle of the present invention. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 17, in the fifth embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and the engine 20 are arranged inside the engine cover 11 in the engine room 10 in order from the outside. A hydraulic continuously variable transmission 30 is arranged on the lower rear side of the engine 20 and between the engine room 10 and the glen tank 7 so as to be biased to the outside of the rotation locus of the cooling fan 40.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90.
The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket projecting to the rear side of the engine room 10 provided in the engine rear frame of the engine room 10, and is below the engine 20 in the engine room 10 and behind the engine room 10. Arranged on the side.

In the fifth embodiment, since the hydraulic continuously variable transmission 30 is disposed between the engine room 10 and the Glen tank 7, the hydraulic continuously variable transmission 30 is sucked by the cooling fan 40. The cooling efficiency of the engine 20 can be enhanced without hindering the blowing of outside air, and the dust and dust adhering to the filter body 12 of the engine cover 11 can be prevented without hindering blowing of the inside air discharged by the cooling fan 40. The removal efficiency can be increased, and maintenance and inspection of the hydraulic continuously variable transmission 30 can be easily performed by opening the glen tank 9.
Further, since the belts 51, 52, 53 are arranged outside the engine 20 and the hydraulic continuously variable transmission 30, maintenance and inspection can be easily performed by opening the engine cover 11 of the engine room 10. it can.
Furthermore, since the distance between the operator sitting in the cabin 9 and the hydraulic continuously variable transmission 30 is large, the noise of the hydraulic continuously variable transmission 30 transmitted to the operator can be reduced.

  Next, a description will be given of a sixth embodiment of the prime mover structure of the working vehicle of the present invention. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 18, in the sixth embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and the engine 20 are arranged inside the engine cover 11 in the engine room 10 in order from the outside. A hydraulic continuously variable transmission 30 that is biased to the outside of the rotation locus of the cooling fan 40 is disposed on the lower front side of the engine 20 and below the step 95 of the cabin 9 on the front side of the engine room 10.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90.
The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket projecting to the front side of the engine room 10 provided in the operation frame of the engine room 10, and is a cabin below the engine 20 in the engine room 10 and on the front side of the engine room 10. Nine steps 95 are arranged below.

In the sixth embodiment, the hydraulic continuously variable transmission 30 is disposed below the step 95 of the cabin 9 on the lower front side of the engine 20 in the peripheral portion that does not overlap with the cooling fan 40 of the engine room 10. In addition, the hydraulic continuously variable transmission 30 does not become an obstacle to the blowing of the outside air sucked by the cooling fan 40, but can improve the cooling efficiency of the engine 20, and can also obstruct the blowing of the inside air discharged by the cooling fan 40. Therefore, the efficiency of removing the dust and dust adhering to the filter body 12 of the engine cover 11 can be increased, and the maintenance and inspection of the hydraulic continuously variable transmission 30 can be performed from the opening portion of the step 95 without opening the cabin 9. It can be done easily.
Further, since the belts 51, 52, 53 are arranged outside the engine 20 and the hydraulic continuously variable transmission 30, maintenance and inspection can be easily performed by opening the engine cover 11 of the engine room 10. it can.
Furthermore, since the distance between the operator sitting in the cabin 9 and the hydraulic continuously variable transmission 30 is large, the noise of the hydraulic continuously variable transmission 30 transmitted to the operator can be reduced.

  Next, a description will be given of a seventh embodiment of the prime mover structure of the working vehicle of the present invention. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 19, in the seventh embodiment, an intercooler 90, an oil cooler 85, a radiator 80, a cooling fan 40, and the engine 20 are arranged inside the engine cover 11 in the engine room 10 in order from the outside. A hydraulic continuously variable transmission 30 is arranged on the upper front side of the engine 20 in the engine room 10 and inside the engine 20 so as to be biased to the outside of the rotation locus of the cooling fan 40.

The intercooler 90 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 20, and is connected to a manifold 93 that is an intake path of the engine 11.
The oil cooler 85 is a device that cools the lifting cylinder and the drive oil for the transmission, and is attached to a support member 83 provided outside the radiator 80 below the intercooler 90.
The radiator 80 is a device that cools the cooling water heated by the engine 11, and is connected to a manifold 82 that is a cooling water path of the engine 11.
The cooling fan 40 includes a blade 40A and a central portion 40B that supports the base of the blade 40A. An input shaft 41 extending inward is attached to the central portion 40B of the cooling fan 40, and an inner end portion of the input shaft 41 is attached to the central portion 40B. The pulley 42 is pivotally supported.

  The hydraulic continuously variable transmission 30 is a device that switches the driving state of the cooling fan 40 and increases / decreases the rotation (power) of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30. The hydraulic continuously variable transmission 30 is attached to a bracket provided on an upper reinforcing frame whose both ends are fixed to an operation frame of the engine room 10 and an engine rear frame. It is arranged inside (left side).

  Next, the power system of the engine according to the seventh embodiment will be described.

  As shown in FIG. 20, the rotation of the engine 20 is transmitted to the generator 60 that starts the generator and the water pump 70 that circulates the cooling water to the engine 20, so that it is supported by the output shaft 21 of the engine 20 and the output shaft 21. The pulley 22 that rotates integrally, the pulley 62 that is supported by the input shaft 61 of the generator 60 and that rotates together with the input shaft 61, and the input shaft 71 that is supported by the input shaft 71 of the water pump 70. The belt 51 is wound around the rotating pulley 72.

In order to transmit the rotation of the engine 20 to the hydraulic continuously variable transmission 30 that switches the driving state of the cooling fan 40 and increases / decreases the rotation, the output shaft 21 of the engine 20 and the input shaft of the hydraulic continuously variable transmission 30 A belt 54 is wound around a pulley 32 that is supported by the shaft 31 and rotates integrally with the input shaft 31.
Further, the rotation of the engine 20 transmitted to the input shaft 31 of the hydraulic continuously variable transmission 30 is switched in the direction of rotation within the hydraulic continuously variable transmission 30 and is increased or decreased. 30 is transmitted to the output shaft 33 and is transmitted to the output shaft 38 via the chias 34, 36, and 37 that mesh with each other.

In order to transmit the rotation of the engine 20 transmitted to the output shaft 38 of the hydraulic continuously variable transmission 30 to the cooling fan 40, it is supported by the output shaft 38 of the hydraulic continuously variable transmission 30 and integrated with the output shaft 38. A belt 53 is wound around a pulley 39 that rotates and a pulley 42 that is supported by the input shaft 31 of the cooling fan 40 and rotates together with the input shaft 41.
Further, the input shaft 31 of the cooling fan 40 is rotatably supported by the input shaft 71 of the water pump 70 via the bearing 43.

In the seventh embodiment, since the hydraulic continuously variable transmission 30 is disposed on the lower front side of the engine 20 in the peripheral portion that does not overlap with the cooling fan 40 in the engine room 10, the hydraulic continuously variable transmission 30. However, the cooling efficiency of the engine 20 can be improved without hindering the blowing of outside air sucked by the cooling fan 40, and the filter body 12 of the engine cover 11 can be improved without hindering blowing of the inside air discharged by the cooling fan 40. The efficiency of removing the dust and dust adhering to the vehicle can be increased, and the maintenance and inspection of the hydraulic continuously variable transmission 30 can be easily performed from the cabin 9.
Further, the space in the engine room 10 on the upper front side of the engine 20 and inside the engine 20 can be effectively used.

  The present invention can be applied to agricultural work vehicles.

1 Combine 7 Glen tank (working section)
DESCRIPTION OF SYMBOLS 9 Cabin 10 Engine room 11 Engine cover 12 Filter body 20 Engine 21 Output shaft 30 Hydraulic continuously variable transmission 31 Input shaft 33 Output shaft 38 Output shaft 40 Cooling fan (fan)
41 Input shaft 51 Belt 52 Belt 53 Belt 60 Generator 61 Input shaft 70 Water pump 71 Input shaft (intermediate shaft)
80 radiator 85 oil cooler 90 intercooler 95 step 112 hydraulic pump 113 hydraulic motor 115 trunnion shaft 130 tension clutch 131 tension roller 140 tension roller 150 transmission 151 traveling hydraulic continuously variable transmission 180 threshing unit 185 sorting unit 190 reaping device 191 Hydraulic continuously variable transmission 200 for harvesting Hydraulic valve device

Claims (9)

A radiator (80) is disposed at a portion outside the engine (20), and a filter body (12) is disposed at a portion outside the radiator (80), and a portion between the engine (20) and the radiator (80). Has a fan (40),
A hydraulic continuously variable transmission (30) capable of forward / reverse output to drive the fan (40) by shifting the driving force of the engine (20);
With the speed change operation of the hydraulic continuously variable transmission (30), the fan (40) is driven to rotate in the forward direction to suck the outside air from the outside of the filter body (12), and the fan (40) It is configured to be switchable between a dust-removed state that reversely drives and blows wind from the inside to the outside of the filter body (12),
The driving part of the working vehicle, characterized in that the hydraulic continuously variable transmission (30) is arranged so as to be biased outside the rotation locus of the fan (40) as viewed from the direction of the rotational axis of the fan (40). Construction. The driving force from the output shaft (21) of the engine (20) is measured on the engine (20) side in the vicinity of the center of gravity of the projected shape of the radiator (80) when viewed from the direction of the rotational axis of the fan (40). The intermediate shaft (71) supported by the part is input, and the driving force is transmitted from the intermediate shaft (71) to the hydraulic continuously variable transmission (30).
2. The driving part structure of a working vehicle according to claim 1, wherein the fan (40) is rotatably supported by the intermediate shaft (71).   The rotation direction of the intermediate shaft (71) by the driving force of the engine (20) and the rotation direction of the fan (80) in the cooling state are set to be the same direction. The structure of the prime mover of the work vehicle. A cabin (9) surrounding the steering section is provided above the engine (20), and
The motive part structure of the working vehicle according to any one of claims 1 to 3, wherein the hydraulic continuously variable transmission (30) is disposed on an upper front side of the engine (20).   The motive power part structure of the working vehicle according to any one of claims 1 to 3, wherein the hydraulic continuously variable transmission (30) is disposed on an upper rear side of the engine (20). A cabin (9) surrounding the steering section is provided above the engine (20), and
4. The motive part structure of a working vehicle according to claim 1, wherein the hydraulic continuously variable transmission (30) is disposed on the lower front side of the engine (20). 5.   The hydraulic continuously variable transmission (30) is arranged in a lower front side of the engine (20) and below a step (95) in the cabin (9). The structure of the driving part of the working vehicle.   4. The motive power structure of a working vehicle according to claim 1, wherein the hydraulic continuously variable transmission (30) is arranged on the lower rear side of the engine (20). 5.   A working part (7) that can be opened outward is disposed in a rear part of the engine room (10) in which the engine (20) is installed, and between the working part (7) and the engine room (10). The structure of the driving part of the working vehicle according to claim 8, wherein the hydraulic continuously variable transmission (30) is disposed in the working part.

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