JPH11318112A - Power outputting mechanism for vehicle type control machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power outputting mechanism to be mounted on a vehicle type control machine, provided with a front wheel under the lower front section of a machine frame, rear wheels at the rear of the frame, operator's seat on the upper rear section and a working machine suspended on the side, which can expand choices of the working machines for the control machine. SOLUTION: This power outputting mechanism is to be mounted on a 3-wheel vehicle type control machine, provided with a front wheel under the lower front section of a machine frame, two rear wheels at the rear of the frame, operator's seat 12 on the upper rear section and a working machine attachable to or detachable from the side of the frame, wherein a front PTO axis 65 is inserted into a front case 7 provided at the front of the frame so as to output power from a driving transmission route in the front case 7 for driving the front wheel, the front PTO axis 65 attachable to or detachable from the side of the front case 7 is provided, and a bevel gear 64 is inserted in and fixed on the front PTO axis 65 to transmit power to the front PTO axis 65.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for taking out a PTO of a three-wheeled passenger management machine having one front wheel at a front portion and two rear wheels at a rear portion.

[0002]

2. Description of the Related Art Conventionally, a three-wheeled passenger management work vehicle is configured to transmit a driving force output from a transmission to front wheels and drive the front wheels, and to connect a front part of the body and a rear part of the body. A drive transmission mechanism is arranged in the frame, and the drive power is transmitted to the front wheels via a front case and a front axle case. On the other hand, the power of the PTO output is transmitted from the PTO shaft projecting forward from the lower part of the transmission case to the working machine mounted on the abdomen of the riding management work vehicle via a universal joint and a PTO transmission shaft.

[0003]

However, the driving force transmitting mechanism for transmitting the driving force to the front wheels transmits the driving force only to the front wheels, and the driving force transmitting mechanism for the front wheels is diverted to other mechanisms. Therefore, a driving force transmission mechanism for driving the front wheels is provided only for driving the front wheels. Further, the PTO shaft is formed at the lower part of the transmission case, and when the work machine is mounted on the abdomen of the riding management work vehicle, the driving force to the work machine is reduced by the PTO formed at the lower part of the transmission case.
Since the driving force is input by the shaft, the input of the driving force to the working machine is performed from the rear of the working machine, so that the working machine that can be mounted on the riding management work vehicle is limited. Further, there is a possibility that the degree of freedom in designing a work machine that can be mounted on the riding management work vehicle may be reduced.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, as described in claim 1, one front wheel is arranged in the lower front part of the body frame, two rear wheels are arranged in the rear part, the driver's seat is arranged in the upper rear part, and the work machine can be arranged in the abdomen. In a three-wheel riding management machine, a front PTO shaft is inserted into a front case provided at a front portion of a body frame, and power is taken out from a front wheel drive transmission path housed in the front case. Further, as described in claim 2, the front PTO shaft is removably disposed on the front case from the side, a bevel gear is inserted and fixed on the front PTO shaft in the front case, and the front PTO shaft is inserted through the bevel gear. Power is transmitted to the front PTO shaft.

[0005]

Next, an embodiment of the present invention will be described. FIG. 1 is an overall side view of a passenger management machine in a state where a middle tillage rotary is mounted on the abdomen and lowered, FIG. 2 is a side view showing a front portion of the passenger management machine, FIG. 3 is a side sectional view of the passenger management machine, FIG. Is a plan sectional view of the front case, FIG. 5 is a front sectional view of the front case and the front axle case, and FIG. 6 is a side sectional view of the front case and the front axle case.

First, the overall structure of a three-wheeled passenger management machine according to the present invention will be described with reference to FIGS. In the three-wheeled passenger management machine, an operating unit B is disposed at a rear portion of the body frame 1 extending in the front-rear direction, an engine 6 is mounted at a rear end of the body frame 1, and a traveling speed is changed by a transmission case 51. Rear axle case 4 arranged at the lower part of transmission case 51 and rear wheel 3.
3 is driven.

Power is transmitted from the transmission case 51 to the front wheels 2 via a power transmission shaft disposed in the body frame 1, and a front case 7 is provided at a front portion of the body frame 1. A front wheel drive case 8 is attached to the lower part of the lower part 7 so as to be rotatable left and right about the vertical direction as an axis, and the front wheel drive case 8 can support and drive one front wheel 2 to constitute a three-wheel drive vehicle. . The upper part of the front case 7 is covered with a cover 30.

The engine 6 is covered by a bonnet 10, and a transmission case 51 and a vehicle body cover 11 for covering the rear wheel 3 are arranged in front of the hood 10. 12 is placed,
A steering column 13 is provided upright on the body frame 1 in front of the driver's seat 12. The steering column 1
A steering handle 14 protrudes above an upper portion of the steering column 3, an accelerator lever (not shown) protrudes from a right side portion of the steering column 13, and a side clutch pedal 16 is disposed below the steering column 13. .

A work implement mounting device 29 is disposed on the abdomen between the front wheel 2 and the rear wheel 3. The work machine mounting device 2
9 and 9, a pair of left and right brackets 18 project downward from the front lower part of the body frame 1 (rear position of the front case 7) as shown in FIGS.
Support shafts 169 and 170 are mounted on the upper and lower sides of 8.18. Upper links 19, 19 are provided at both ends of the upper support shaft 169.
Are pivotally supported, and the lower link 20, 20 front is pivotally supported at both ends of the lower support shaft 170. The upper link 19
19 are provided at intervals substantially equal to the left and right widths of the body frame 1. The upper link 19 can be turned up and down until it is located on the side of the body frame 1 so that the working machine 26 can be lifted. Furthermore, the upper link 19 and the lower link 20 are connected to each other by a connecting arm 160 at an intermediate portion to form a parallel link.

A base of an elevating cylinder 22 is pivotally supported by the brackets 18. A rod pin of the elevating cylinder 22 has a connecting pin 163 connecting an intermediate part of the lower link 20 and the lower end of the connecting arm 160. And the lifting cylinder 22 is interposed at the center of the parallel link in the left-right direction.

A hitch 21 as a mounting member is pivotally supported at the rear end of the upper link 19 and the rear end of the lower link 20, and a work machine 26 is locked to the hitch 21. As shown in FIG. 1, a bar-shaped toolbar 23 extends in the left-right direction from the hitch 21, and a plurality of working machines 26 can be attached to the center portion and the left and right side portions of the toolbar 23 so that the mounting positions can be changed. In this way, multiple management tasks can be performed. still,
As the working machine 26, a rotary cultivator, a rake-shaped rake for removing weeds, and the like can be arranged.

A power input case 36 is fixed at the center of the toolbar 23 in the left-right direction, and the transmission case 5 is mounted on an input shaft of the power input case 36.
Power is transmitted from a PTO shaft 35 projecting forward from the lower part 1 via a universal joint and a PTO transmission shaft 37. From the power input case 36, the power shaft 3
The power shafts 38 are protruded, and the power shaft 38 is inserted into the upper part of the chain case 25 of each rotary cultivator as the work equipment 26, and power is transmitted to the rotary cultivator.

Further, a locking body 44 (FIG. 2) for locking to the body frame 1 side is fixed to the rear surface of the hitch 21. A stay is provided at a lower portion of the body frame 1 immediately before the steering column 13. 140 and 140 are protruded downward, and the lower ends of the stays 140
The upper end of the pivot arm 142 is pivotally supported,
A locking pin 141 is axially supported at the other end of the projection 2 so as to protrude outward. An operating rod 143 is provided at one end of the locking pin 141.
Is pivotally supported, and the rear end of the operating rod 143 is slidably supported on the lower side of the steering column 13 in a substantially forward and backward direction.

Then, the work machine 26 is raised to the uppermost position, and the operating rod 143 is slid forward, whereby the rotating arm 142 is rotated downward, and the locking pin 141 is When moving downward, the locking body 44 and the locking pin 141 are engaged, and when moving with the work implement 26 being disposed on the abdomen, the work implement 26 can be reliably held at the highest position. Like that.

Next, the body frame 1 will be described with reference to FIG.
This will be described with reference to FIG. The body frame 1 is formed in a tubular shape that is long in the front-rear direction, and the front frame 1 a
And the rear frame 1b, the work machine 26 is positioned below the connection portion, and the engine frame 1c is fixed to the rear end of the rear frame 1b to form the body frame 1.

The engine frame 1c is disposed horizontally, and its front end is fixed to the rear frame 1b via a mounting plate 31. The engine 6 is mounted on the rear upper portion of the engine frame 1c. A transmission case 51 is placed in front of the transmission case 51. Rear axle case 4 projecting laterally from the transmission case 51
Are supported on a side frame 32 fixed to the side surface of the engine frame 1c. Furthermore, engine frame 1
Frames 33 are erected above the front and rear middle part of the c side, a gate-shaped guide frame 34 is fixed on the frames 33, 33, and a canopy 52 is mounted above the driver's seat 12.

The rear frame 1b is formed in a U-shape whose front lower part is open in a sectional view, and the rear end of the rear frame 1b is located immediately in front of the transmission case 51. In the rear frame 1b, an output shaft protruding forward from the upper part of the transmission case 51 is connected to a first power transmission shaft 9a via a universal joint. Placed in
Further, from the lower part of the transmission case 51, the PTO
The shaft 35 is projected. Power is transmitted to the working machine 26 via a universal joint and a PTO transmission shaft 37 to the PTO shaft 35, and the PTO transmission shaft 37 is configured to be extendable and contractable when the working machine 26 is moved up and down. The transmission of power is possible while preventing the rear frame 1b from being retracted, and when it is raised, it is housed in the rear frame 1b formed in a U-shape.

Further, steps (not shown) are formed on the left and right sides of the lower portion of the rear frame 1b, and a frame body 41 formed by bending a pipe body is provided on an outer peripheral portion thereof for reinforcement. I can do it. An armrest 50 is provided upright in front of the rear portion of the frame 41.

The front frame 1a is formed in a cylindrical shape, and the front portion of the first power transmission shaft 9a is connected to the rear portion of the second power transmission shaft 9c via a universal joint. The shaft 9c is rotatably supported inside the connection between the front frame 1a and the rear frame 1b, and has universal joints on both front and rear sides thereof. The front portion of the second power transmission shaft 9c is connected to the rear portion of the third power transmission shaft 9b via a universal joint, and the third power transmission shaft 9b is housed in the front frame 1a. The front frame 1 a and the rear frame 1 b are used as a case of a transmission shaft for transmitting power to the front case 7, and the front wheels 2 are driven via a front wheel drive case 8.

Further, a turning shaft 43 for steering is supported in the front frame 1a, and a rear portion of the turning shaft 43 for steering is connected to the steering handle 1 via a joint shaft 46.
4 is connected to the lower portion of the operating shaft 45 of the front wheel 4 and rotates the steering handle 14 so that the front wheels 2 and the front wheel drive case 8 are rotated via the rotating shafts 45 and 43 and the like.
Is steered and turned.

Next, the structure inside the front case 7 disposed below the cover 30 will be described. As shown in FIGS. 4 to 6, a front wheel first transmission shaft 61 is provided on the rear side surface of the front case 7 in the front-rear direction, and is rotatably supported by the front case 7. The front end of the third power transmission shaft 9b is connected to the rear end of the front wheel first power transmission shaft 61 so that driving power can be transmitted via the third power transmission shaft 9b. A front portion of the front wheel first transmission shaft 61 projects into the front case 7, and a front wheel first transmission gear 62 is inserted and fixed to the front wheel first transmission shaft 61 at a front end of the front wheel first transmission shaft 61. Have been. A front wheel second transmission gear 63 is disposed above the front wheel first transmission gear 62, and the front wheel second transmission gear 63 is inserted and fixed to a front wheel second transmission shaft 66 above the front case 7. And the front wheel first transmission gear 62. The front wheel first transmission gear 62 and the front wheel second transmission gear 63 are constituted by bevel gears. Thus, the front power transmission shaft 61 is rotated by the third power transmission shaft 9b, the front wheel first transmission gear 62 is rotated, and the front wheel second transmission gear 63 meshed with the front wheel first transmission gear 62. Is rotated to transmit a driving force to the front wheel second transmission shaft 66.

The front wheel second transmission shaft 66 is disposed vertically in the front case 7, and the upper end of the front wheel second transmission shaft 66 is rotatably supported by the front case 7. The front wheel second transmission shaft 63 has the front wheel second transmission shaft 63 inserted and fixed above the front wheel second transmission shaft 66. The lower end of the front wheel second transmission shaft 66 has a front axle case 8 disposed below the front case 7. It protrudes in the upper part. The lower end of the front wheel second transmission shaft 66 has a third transmission gear 6
7 is fitted and fixed, and meshes with the front wheel fourth transmission gear 67. The fourth transmission gear 68 is provided at an upper portion of the front axle case 8 with the third transmission gear 67.
, The front axle case 8
One end of a third transmission shaft 69 provided horizontally in the left-right direction is inserted and fixed at an upper portion of the first transmission shaft. The end of the third transmission shaft 69 is rotatably supported on the side of the front axle case 8 at the upper part of the front axle case 8. Is connected to a side of the front axle case 8.
3 and within the chain case 83,
A sprocket 82 is inserted and fixed to one end of the third transmission shaft 69. A chain 82 is suspended from the sprocket 82, and power can be transmitted to the front wheel 2 via the chain 82.

With the above-described configuration, the driving force is applied to the front wheel 7 by the third power transmission shaft 9b in the front case 7.
To the first drive gear 6 from the front wheel first transmission shaft 61.
2 and the front wheel second drive gear 63 to the front wheel second transmission shaft 66, the front wheel third transmission gear 67 is driven, and the front wheel third transmission shaft 69 is rotated. The front wheel 2 is driven.

A first front wheel steering shaft 71 is arranged in the front-rear direction above the front case 7 and is rotatably fixed to the front case 7. The rear end of the first front wheel steering shaft 71 projects rearward from the rear surface of the front case 7, and the front end of the rotation shaft 43 is connectable to the rear end of the first front wheel steering shaft 71. ing. Thus, the rotation of the rotation shaft 43 can be transmitted to the first front wheel steering shaft 71.

The first front wheel steering shaft 71 is inserted and fixed to the worm gear 72 at the front part.
The worm gear 72 is configured to rotate with the rotation of the worm gear 72. On the side of the worm gear 72, a worm wheel 73 rotatably inserted in a pivot 75 disposed in the front case 7 in a vertical direction is provided. Both ends of the pivot 75 are fixed to the front case 7, and the worm wheel 7
3 and a gear 74 fixed to the lower surface of the worm wheel 73 is pivotably supported.

A steering gear 85 is provided beside the gear 74, and the steering gear 85 is provided on the steering cylinder 8
4 is fitted and fixed on the upper part of the gear 4, and meshes with the gear 74. The front wheel second transmission shaft 66 is inserted into the steering cylinder 84, and the steering cylinder 84 is rotatably fixed to the front case 7. Further, the lower end of the steering cylinder 84 is fixed to the front axle case 8, and the steering cylinder 84 is configured to be rotatable with the rotation of the steering gear 85. That is, the front axle case 8 is connected to the front case 7 via the steering cylinder 84.

By rotating the stelling 14 by the above structure,
The worm gear 72 and the worm wheel 73 rotate through the rotation shaft 43 to rotate the first front wheel steering shaft 71.
, The steering cylinder 84 is rotated, and the front axle case 8 is rotated, so that the front wheels 2 can be steered.

A front part P is provided on the side of the front case 7.
A TO shaft 65 is provided in the left-right direction. A side wall of the front case 7 where the front PTO shaft 65 is provided is provided with a front case 7 inside to support the front PTO shaft 65.
The support part is formed integrally with the front part PT.
The O-shaft 65 is rotatably supported by the front case 7 via a bearing at the support portion.

One end of the front PTO shaft 65 projects into the front case 7, and a front PTO drive gear 64 is inserted and fixed to one end of the front PTO shaft 65. The front part P
The TO drive gear 64 is arranged below the front wheel second transmission gear 63, and is configured so that the front PTO drive gear 64 and the front wheel second transmission gear 63 can mesh with each other. The front PTO
The drive gear 64 is formed of a bevel gear, meshes with the front wheel second transmission gear 63, and
3 can be transmitted to the front PTO shaft 65.

The other end of the front PTO shaft 65 projects outside the front case 7 from the side of the front case 7, and the driving force extracted by the front PTO drive gear 64 is applied to the outside of the front case 7. It is configured to be able to transmit to. Therefore, the driving force of the front wheels transmitted to the front case 7 is transmitted to the front PTO driving gear 64 and the front PTO shaft 65.
Thereby, it can be taken out of the front case 7. That is, the PTO can be taken out in the middle of the front wheel drive transmission path.

In the above configuration, a driving force to the working machine can be supplied from the front PTO shaft 65 protruding from the front case 7 and from the PTO shaft 35 protruding forward from the lower part of the transmission case 51. Driving force can be supplied to the work machine. That is, a driving force can be supplied from the front and rear of the work machine mounted on the work machine mounting device 29 on the abdomen between the front wheel 2 and the rear wheel 3 of the management machine. Can be increased, and the work area by the management machine can be expanded. In addition, since the driving force is taken out by the front PTO driving gear 64 and the front PTO shaft 65 in the middle of the driving force transmission path of the front wheel 2, the driving force can be easily taken out. It is possible to improve the durability of the driving force take-out mechanism for the front PTO shaft 65. Also, by opening the shaft insertion hole on the side surface of the front case 7 and covering it, it is possible to easily retrofit the mechanism, and it is possible to improve the assemblability and maintainability at the time of manufacturing the mechanism. Further, the number of components can be reduced, and the manufacturing cost can be reduced.

[0032]

As described above, the present invention has the following advantages. That is, as described in claim 1, one front wheel is arranged in a lower front part of the body frame,
In a three-wheel riding management machine in which two rear wheels are arranged at the rear, a driver's seat is arranged at the upper rear, and a work machine can be arranged at the abdomen, a front PTO is provided at a front case provided at the front of the body frame.
Since the shaft is inserted and power is taken out from the front wheel drive transmission path accommodated in the front case, the front wheel drive transmission path can be shared as a drive transmission path to the power take-out device. For this reason, since the front wheel drive transmission mechanism can be used as a drive transmission mechanism to the power take-out device, the number of components can be reduced, and the power transmission mechanism disposed in the body frame can be simply configured, The degree of freedom in designing the power transmission mechanism can be improved, and the degree of freedom in designing the passenger management work vehicle can be improved. In addition, since the drive transmission mechanism can be reduced in weight, the weight of the front part of the passenger management work vehicle can be reduced, and even when the power take-out device is installed in the front part of the fuselage, it can be steerable compared to the conventional passenger management work vehicle. Changes are almost negligible. In addition, since a work machine is mounted on the abdomen of the body of the passenger management work vehicle, and power can be input from a power take-out device arranged in the front part of the body, the work machine can be mounted on the body abdomen of the ride management work vehicle. Types can be expanded. Thus, the type of work performed by the riding management work vehicle can be increased, and the work area of the riding management work vehicle can be expanded.

Further, as described in claim 2, the front PTO shaft is removably disposed on the front case from the side, and a bevel gear is inserted and fixed on the front PTO shaft in the front case. Front PTO power via bevel gear
Since it is configured to transmit power to the shaft, a power take-out device can be configured at the front part of the passenger management work vehicle with a simple configuration in the front case, and a work machine mounted on the abdomen of the passenger management work vehicle can be configured. Power can be input from the front. For this reason, it is possible to increase the types of working machines that can be mounted on the abdomen of the riding management work vehicle, to increase the types of work performed by the riding management work vehicle, and to expand the work area of the riding management work vehicle. It is possible. Further, since most of the configuration of the conventional passenger management work vehicle can be diverted, parts and manufacturing processes of the conventional passenger management work vehicle can be diverted, and the manufacturing cost of the passenger management work vehicle can be reduced. . In addition, since the power take-out device is configured with a simple configuration, the durability of the power take-out device can be improved, and the power take-out device can be retrofitted, so that the assemblability and maintainability at the time of manufacturing the mechanism can be improved. Also, the number of components can be reduced,
Manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall side view of a passenger management machine in a state where a middle tillage rotary is attached to an abdomen and lowered.

FIG. 2 is a side view showing a front part of the passenger management machine.

FIG. 3 is a side sectional view of the riding management machine.

FIG. 4 is a plan sectional view of a front case.

FIG. 5 is a front sectional view of a front case and a front axle case.

FIG. 6 is a side sectional view of a front case and a front axle case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Front wheel 3 Rear wheel 7 Front case 9a / 9b / 9c Power transmission shaft 26 Work implement 63 Front wheel second drive gear 64 Front PTO drive gear 65 Front PTO shaft

Claims (2)

[Claims] 1. A front wheel is disposed at a lower front portion of a body frame, two rear wheels are disposed at a rear portion, and a driver's seat is disposed at a rear upper portion.
In a three-wheel riding management machine capable of disposing a working machine on an abdomen, a front PTO shaft is inserted into a front case provided at a front portion of a body frame, and power is transmitted from a front wheel drive transmission path housed in the front case. A power take-out mechanism for a passenger management machine, wherein the power take-out mechanism is configured to be taken out. 2. The front PTO shaft is detachably disposed on a front case from a side, and a front part P in the front case is provided.
2. The power take-out mechanism for a passenger management machine according to claim 1, wherein a bevel gear is inserted and fixed on the TO shaft, and power is transmitted to the front PTO shaft via the bevel gear.