JP2597180Y2 - Horizontal control mechanism for three-wheel passenger management machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-wheeled riding management machine for maintaining a body substantially horizontally on a slope or a rugged field.

[0002]

2. Description of the Related Art The configuration of a passenger management machine has been conventionally known. For example, the technique is described in Japanese Patent Application Laid-Open Nos. 2-276502 and 63-227476. Also, the configuration for controlling the work machine mounted on the tractor horizontally is known, but the configuration for controlling the aircraft horizontally is only adopted for special tractors,
It was hardly performed in the management machine.

[0003]

[Problems to be Solved by the Invention] In a conventional tractor or the like, when traveling on a sloping ground or a rugged field, the vehicle body is also inclined, so that not only the operator is inclined, but also it is difficult to perform the work, and the angle is also difficult. The more you go, the more you become anxious and the balance of the car body becomes very unstable. In addition, the working machine unit requires a horizontal control function to cope with a slope or unevenness, and is expensive due to its complicated configuration. Therefore, an object of the present invention is to provide a stable working posture even on a sloping land or a field having unevenness, and to enable smooth working with a simple configuration.

[0004]

The purpose of the present invention is as described above, and to achieve the object, the present invention is configured as follows. Two wheels, a front wheel 3 and a rear wheel 4, are arranged on one row in the front-rear direction, and the front wheel 3 and the rear wheel 4 are rotated for steering, and a steering drive wheel to which a driving force is transmitted. And one auxiliary wheel 11 is arranged beside the row of the front wheels 3 and the rear wheels 4, and the auxiliary wheel 11 is a driven wheel to which no driving force is transmitted.
An actuator 13 for moving the auxiliary wheel 11 up and down is provided, and a horizontal sensor 55 is separately arranged at an arbitrary position of the fuselage.
A signal from the horizontal sensor 55 is supplied to a solenoid via a control circuit.
To the valve and actuate the solenoid valve
Extends and retracts the auxiliary wheel 11 by extending and retracting the actuator 13
It is configured to control the aircraft substantially horizontally .

[0005]

When the auxiliary wheels provided on the side of the two running wheels are lowered in work on a slope or a field, the arm 13a of the actuator 13 fixed to the lower portion of the carrier 10 is extended by a signal from the horizontal sensor, and the carrier 13 The auxiliary wheel support arm 50 pivotally supported by the pivot 10 rotates downward, the auxiliary wheel 11 supported by the auxiliary wheel support arm 50 moves downward, and the body is corrected horizontally. When the height of the auxiliary wheel increases, the arm 13a of the actuator 13 contracts, the auxiliary wheel support arm 50 of the carrier 10 rotates upward, the auxiliary wheel 11 moves upward, and the height of the auxiliary wheel decreases. To correct the aircraft horizontally.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is an overall perspective view of a three-wheel passenger management machine, FIG. 2 is a side view of a main part of a horizontal control mechanism of the three-wheel passenger management machine of the present invention, and FIG. 3 shows a state in which an auxiliary wheel 11 has moved upward. FIG. 4 is a front view of the three-wheel passenger management machine, FIG. 5 is a plan view of the same, and FIG. 6 is a side view of the same.

Referring to FIG. 4, FIG. 5, and FIG. 6, the overall configuration of the three-wheeled passenger management machine will be described. A front wheel 3 and a rear wheel 4 are arranged, a steering handle 7 and a seat 6 are arranged at a substantially central portion of the machine between the front wheel 3 and a rear wheel 4, and an auxiliary wheel 11 is arranged on one side. Auxiliary wheel 11 of steering handle 7
An engine E is arranged at the front of the machine on the side, and a work machine can be mounted behind the seat 6. In this embodiment, two rotary tilling devices 5a and 5b are mounted. As shown in FIG. 4, the engine E is offset by a certain dimension A inward (toward the auxiliary wheel 11) from the operator 1 seated on the seat 6 to balance the left and right weights. Sheet 6
An auxiliary wheel arm 9 is protruded from the rear part of the auxiliary wheel arm 9 so as to extend and contract in the leftward direction. A carrier 10 is provided at an end of the auxiliary wheel arm 9, and an auxiliary wheel 11 is mounted on the carrier 10. 11 is an actuator 1 composed of a hydraulic cylinder or the like.
3 makes it possible to move up and down.

As shown in FIG. 5, the auxiliary wheel arm 9 is provided with one of the two rotary tilling devices 5a and 5b by hydraulic pressure.
Can be extended and retracted in conjunction with the telescopic arm 12 so that the front wheel 3
-The tread adjustment between the rear wheel 4 and the auxiliary wheel 11 and the tread adjustment of the dual rotary tillage devices 5a and 5b can be performed simultaneously, and it is possible to cope with work in a field with different furrows. As shown in FIG. 6, the two rotary tilling devices 5a and 5b
· The actuator 14 is pivotally connected via the actuator 21 and is configured to be able to move up and down via an L-shaped support arm 20 by an actuator 14 such as a hydraulic cylinder.

A transmission case M is arranged at the rear of the engine E provided at the front of the machine at the left front of the operator 1. A transmission bevel gear case 33 is provided at the lower right side of the transmission case M as shown in FIG. The front wheel gear case 26 is arranged below the front wheel bevel gear case 33, and the front wheel chain case 15 is arranged on the right side of the front wheel gear case 26. A PTO shaft 2 protrudes from the rear of the transmission case M, and one end of a drive shaft 8 is connected to the PTO shaft 2 via a universal joint. Is connected to the gear case 17 for the working machine disposed at Behind the seat 6, the rear wheel bevel gear case 3
4 and the lower part of the rear wheel bevel gear case 34,
A rear wheel gear case 27 is arranged, and a rear wheel chain case 16 is arranged on the right side of the rear wheel gear case 27.

On the upper right side of the working machine gear case 17, a working machine chain case 18 is projected rearward.
At the rear end of the working machine chain case 18, two rotary tilling devices 5a and 5b are mounted. The two rotary tilling devices 5a and 5b connect the L-shaped support arm 20 and the support arm 21 to each other. It is connected to the rear end of the machine via a lift. The engine E, the transmission case M, the drive shaft 8, the work equipment gear case 17 and the like are arranged to be offset from the front wheel 3, the steering handle 7, the seat 6, and the rear wheel 4 by a predetermined dimension A to the left. It is covered by the frame cover F shown in FIG.

The output shaft of the engine E is a transmission case M
The power transmission shaft 19 is inserted into the transmission shaft 19 and the power protrudes from the lower part on the right side of the transmission case M from the bevel gear on the input shaft 54 via the bevel gear, sprocket and chain on the side.
The transmission shaft 19 in the front wheel bevel gear case 33
From the upper bevel gear 31 to the sprocket 40 in the front wheel chain case 15 via two sets of bevel gears in the front wheel gear case 26, from the sprocket 40 to the sprocket 41 via the chain 22, and from the sprocket 41 to the axle 38. The front wheel 3 is driven.

On the other hand, the sprocket 24 of the transmission shaft 19
Through the chain 28 to the sprocket 25 on the transmission shaft 30 below the work machine gear case 17, to the bevel gear 32 on the transmission shaft 30, and from the bevel gear 32 in the rear wheel bevel gear case 34 to the rear wheel gear case. The rear wheel 4 is driven by being transmitted to the sprocket 42 in the rear wheel chain case 16 via the bevel gear 27, transmitted from the sprocket 42 to the sprocket 43 via the chain 23, and transmitted from the sprocket 43 to the axle 39. is there.

[0013] P protruding from the rear of the transmission case M
The TO shaft 2 transmits power to the work equipment gear case 17 via the drive shaft 8, and the power is transmitted from the work gear case 17 to the work equipment chain case 18, and is transmitted from the work equipment chain case 18 to the work equipment chain case 18. Tillage rotary device 5
a, 5b of the transmission shaft 29, and two chain cases 35a, 36a, at both ends of the transmission shaft 29 from the transmission shaft 29.
The tilling claw 37 is rotated by being transmitted to 35b and 36b, and the tilling rotary devices 5a and 5b are moved up and down by driving the actuator 14.

Next, the configuration of the steering handle 7 is as follows.
By operating the steering handle 7, the rotary arm 45 attached to the steering rod 44 rotates, and the rods 48 provided at both ends of the rotary arm 45 are provided.
· Front wheel rotating arm 46 and rear wheel rotating arm 47 by 49
The front wheel rotating cam 46 is connected to the front wheel gear case 26.
Since the rear wheel rotating cam 47 is fixed to the lower portion and fixed to the rear wheel gear case 27, when the operator 1 sitting on the seat 6 turns the steering handle 7 to the right, the rotating cam 45 moves to the left. The front wheel rotating cam 46 rotates rightward, and the front wheel gear case 27, the front wheel chain case 15 and the front wheel 3 rotate rightward, and at the same time, the rod 49 moves forward. The rear wheel rotating cam 47 rotates to the left, and the rear wheel gear case 27, the rear wheel chain case 16 and the rear wheel 4 rotate to the left in conjunction therewith, and the machine turns right. It is. As described above, the front wheel 3 and the rear wheel 4 have a structure that can be operated by the steering handle 7 at the same time.

2 and 3, a description will be given of the horizontal control mechanism of the present invention in the three-wheel riding management machine configured as described above. The auxiliary wheel 11 is supported by an auxiliary wheel support arm 50 pivotally supported by a lower portion of a carrier 10 fixed to an end of the auxiliary wheel arm 9, and a hydraulic pressure is applied between the auxiliary wheel support arm 50 and the carrier 10. An actuator 13 composed of a cylinder or the like is interposed, and a horizontal sensor 55 composed of a rotary encoder or the like is provided at an arbitrary position of the machine, for example, on a frame on the side of the seat 6, and a signal from the horizontal sensor 55 is transmitted via a control circuit. Thus, the solenoid valve is operated to switch the direction in which the pressure oil is supplied to the actuator 13. Therefore, as shown in FIG. 2, when unevenness is present in the work on the sloped land or the work in the field, when the auxiliary wheel 11 side is lowered, the signal of the horizontal sensor 55 extends the piston rod 13 a of the actuator 13, and the auxiliary wheel support arm 50. Is rotated downward, the auxiliary wheel 11 moves downward, and the carrier 10 is raised. Conversely, when the auxiliary wheel 11 side is raised, the piston rod 13a of the actuator 13 is reduced, and the auxiliary wheel support arm 50 is moved. It turns upward and the auxiliary wheel 11 moves upward. With this configuration, when traveling on a slope or uneven ground, the auxiliary wheel 11 is moved upward or downward as shown in FIG. 3 so that the vehicle body is kept horizontal. -ing

[0016]

Since the present invention has the above-described structure and embodiment, it has the following effects. First, since only the auxiliary wheels 11 are changed in order to perform horizontal control during traveling and work, it is only necessary to dispose the actuator 13 in one place, and the structure is simple and the actuator for raising and lowering is used. 13 can be made small, and the weight can be reduced, and the cost can be reduced with this reduction in weight. Second, front wheel 3
And since the rear wheel 4 is rotated for steering, by turning the front and rear wheels, a smaller turn can be performed than when only one of the front and rear wheels is the steered wheel. . Third, since both the front wheels 3 and the rear wheels 4 are drive wheels,
Obtain sufficient driving power while being three deformed wheels
Can be done. Fourth, since the auxiliary wheel 11 is a driven wheel to which no driving force is transmitted, there is no power transmission structure even if an actuator 13 for moving the auxiliary wheel 11 up and down is provided. You can do it.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a three-wheel passenger management machine.

FIG. 2 is a side view of a main part of the horizontal control mechanism of the three-wheeled riding management machine of the present invention.

FIG. 3 is a front view showing a state in which an auxiliary wheel 11 has moved upward.

FIG. 4 is a front view of the three-wheel passenger management machine.

FIG. 5 is a plan view of the same.

FIG. 6 is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operator 3 Front wheel 4 Rear wheel 5 Tilling rotary device 6 Seat 7 Steering 9 Auxiliary wheel arm 10 Carrier 11 Auxiliary wheel 13 Actuator 50 Auxiliary wheel support arm 55 Horizontal sensor E Engine

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-65918 (JP, A) JP-A-5-16848 (JP, A) JP-A-51-97123 (JP, A) 155006 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B62D 61/06-61/08 A01B 51/02 B62D 49/08

Claims (1)

(57) [Scope of request for utility model registration] 1. A front wheel 3 and a rear wheel 4 are arranged on one row in the front-rear direction.
The front wheels 3 and the rear wheels 4 are steered drive wheels that are rotated for steering and transmitted with a driving force, and are disposed laterally in the row of the front wheels 3 and the rear wheels 4. One auxiliary wheel 11 is disposed, and the auxiliary wheel 11 is a driven wheel to which no driving force is transmitted;
An actuator 13 for moving the auxiliary wheel 11 up and down is provided, and a horizontal sensor 55 is separately arranged at an arbitrary position of the fuselage.
A signal from the horizontal sensor 55 is supplied to a solenoid via a control circuit.
To the valve and actuate the solenoid valve
Extends and retracts the auxiliary wheel 11 by extending and retracting the actuator 13
3 characterized in that it is configured to control the aircraft substantially horizontally.
Horizontal control mechanism for wheel-type passenger management machine.