JPH0411424B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a machine body equipped with a working machine and a traveling device is equipped with an engine that drives the traveling device and an operating device that controls the driving of the traveling device by the engine. The present invention relates to improvements to self-propelled work vehicles that are capable of independent self-propulsion.

Work vehicles used in conventional agricultural work are generally mounted on the side of the body of a power vehicle T such as a tractor by means of a side mount, such as the harvester a (grass harvester) shown in Figure 1. In other words, it is a type that is towed and connected to the rear of the body of a power vehicle T such as a tractor, such as Farm Wagon B (a pasture transport vehicle) shown in FIG. When the two operations of harvesting and transportation are carried out at the same time by attaching the harvester to the side and rear of the vehicle, there is a problem in that the driving force is concentrated on the power vehicle T, making it difficult to travel on soft ground.

From this, a work vehicle, such as a self-propelled harvester A shown in FIG. 2 or a self-propelled transport vehicle B shown in FIG. There is a means for constructing a self-propelled work vehicle, but this means is useful, for example, when harvesting and transporting grass at the same time as shown in Figure 1 above. A problem arises in that the self-propelled harvester A and the self-propelled transport vehicle B must be controlled by their respective operators.

The present invention was made in order to solve these problems, and by making the work vehicle that performs each work into a self-propelled work vehicle that runs independently, it is possible to work in weak fields. By connecting the self-propelled work vehicle to a towing vehicle such as a tractor, the drive control of the traveling device of the self-propelled work vehicle can automatically follow the driving control of the towing vehicle. The purpose of the present invention is to propose a new means that allows the vehicle to be used as a towed work vehicle like a normal trailer.

For this purpose, the present invention provides a machine body that supports a work machine and is equipped with a traveling device.
The automatic work vehicle is equipped with an engine that drives the traveling device, and is also equipped with an operating device that controls the driving of the traveling device, so that it can move by itself.The automatic work vehicle is equipped with an engine that drives the traveling device, and is capable of moving forward and backward when being towed. A telescoping mechanism is installed, the telescoping mechanism is linked to the operating device so as to control the drive of the traveling device by the telescoping operation of the front and back thereof, and a connecting part for towing is installed in the telescoping mechanism. This paper proposes a means for constructing a self-propelled work vehicle.

Next, embodiments will be described in detail with reference to the drawings.

In FIG. 4, A is a towing vehicle, in which a harvester a (reaping blow-up device) is mounted on a machine body 2 that travels by a traveling device 1, and an engine E and an engine E that drive the harvester a and drive the traveling device 1. A transmission part M is mounted to transmit the output shaft of the engine E to the input shaft of the harvester a and the traveling device 1, and the transmission part M, the engine E, and each traveling clutch of the left and right traveling devices 1 are mounted. A steering operation device 3 that operates and controls the
A self-propelled harvester is used, but other towing vehicles such as a tractor may also be used.

In FIG. 4, B is a self-propelled work vehicle according to the present invention, in which a beam 5 that is movable up and down about a fulcrum 50 is supported by a hydraulic device 40 on a machine body 2 that travels by a traveling device 1. A pedestal 51 is mounted on the upper surface of the rotating end so as to be raised and lowered by a hydraulic device 41 around a fulcrum 52 in a direction opposite to the rotating direction of the beam 5, and a hopper c is mounted on the upper surface of the pedestal 51. The hydraulic device 4 is supported removably and
0, 41 and the traveling device 1, the output shaft of the engine E is connected to the drive shaft of a pump that supplies hydraulic pressure to the hydraulic circuits of the hydraulic devices 40, 41, and the input of the traveling device 1. It is equipped with a transmission part M for transmitting power to the engine E, the transmission part M, and each traveling clutch of the left and right traveling devices 1 . . . and a hydraulic device 4.
A self-propelled transport vehicle is equipped with a control device 3 for controlling and operating a control valve mechanism of 0.0 and 41.

Reference numeral 6 denotes a connecting rod for towing and connecting the self-propelled transport vehicle B, which is a self-propelled work vehicle, to the rear of the body 2 of the self-propelled harvester A, which is a towing vehicle. It is connected to a connecting hitch 10 installed on the rear surface of the fuselage 2 so as to be rotatable left and right, and the rear end part is
It is connected to an operating arm 70 of a telescoping mechanism 7 installed on the front of the body 2 of the self-propelled transport vehicle B so as to be telescopically operated back and forth, and a seat 8 for an operator to sit on is mounted on the upper surface side of the intermediate portion. be.

As shown in FIG. 5, the telescopic mechanism 7 connects one end of each of two link rods 71 and 72 by a connecting shaft u, and connects the rear end of the actuating arm 70 (or the aforementioned connecting shaft) to the connecting shaft u. Connect the rear end of the rod 6),
A pair of links whose base ends are pivotally supported on a fixed fulcrum shaft y arranged at a position symmetrical to the connecting axis u, with shaft fulcrums v and w supporting the other end sides of the two link rods 71 and 72. Either the ends of the rods 73 and 74 are supported by a pivot, or one of the link rods 7 is supported as shown in FIG.
One shaft fulcrum v is a fixed shaft fulcrum, and the shaft fulcrum w of the other link rod 72 is pivotally supported at the tip of another link rod 75 whose base end is pivotally supported at another shaft fulcrum z whose position is fixed. By configuring an appropriate link mechanism such as the above, the actuating arm 70 moves forward (to the left in Fig. 5), thereby moving the front-rear direction from the fulcrums v and w of the link rods 71 and 72 to the connecting shaft u. The length l extends as shown in FIG. 7 as _l1 , and the actuating arm 70 moves rearward (to the right in FIG. 5), so that the length l in the front-rear direction increases as shown in FIG. It is designed to shrink as shown in l ₂ .

The telescopic mechanism 7 drives the traveling device 1 of the above-mentioned self-propelled transport vehicle B by its longitudinal telescoping operation, and the state position shown in FIG. The state is in a neutral state where it is cut off, and the state in which it is extended forward as shown in FIG. 7 is a state in which the traveling device 1 is driven forward, and the state in which it is contracted backward as shown in FIG. 8 is in a state in which the traveling device 1 is driven backward. It is interlocked and linked to the steering operation system that switches and controls the drive of the traveling device 1 so that

Further, the telescopic mechanism 7 moves from the neutral state position shown in FIG. 5 to a state position in which the control system of the traveling device 1 is driven forward or reversed, as shown in FIG. 7 or FIG. The amount of expansion or contraction in the longitudinal direction after switching to
It is connected to the rotational speed control system of the engine E and is used to control the rotational speed of the engine E to a high or low level so as to increase or decrease the traveling speed in each driving state.

Furthermore, as shown by the chain lines I and 1 in FIG. (not shown) are connected to the control system of these traveling clutches to control on/off.

The driving of the traveling devices 1, 1 by the front and back telescoping operations of the telescoping mechanism 7 is controlled by the back and forth movement of the connecting shaft u or by the movement of one of the two link rods 71, 72. The movement may be performed by rotating around the shaft support point v, and by entering the neutral state shown in FIG. 5, the left and right traveling devices 1, 1, the brake may be applied at the same time as the transmission of power is cut off.

In addition, when controlling the left and right travel clutches by the left and right rotational movement of the operating arm 70 (or the connecting rod 6), the operating arm 70 (or the connecting rod 6)
In some cases, a link is provided separately from the telescoping mechanism 7, and the left and right traveling clutches are controlled by the rotation of the other link.

Next, FIG. 9 shows another embodiment of the telescopic mechanism 7 in an exploded state. In the figure, reference numeral 6 denotes a connecting rod whose front end is connected to a connecting hitch 10 provided at the rear of the body 2 of the self-propelled harvester A, which is a towing vehicle, and only the rear end is shown. 70 is an operating arm of the telescopic mechanism 7, and a connecting portion 70 at the front end is detachably connected to the rear end of the connecting rod 6 via a connecting pin 70a.
It is equipped with b. 71 and 72 are the aforementioned two link rods, and a connecting shaft u connecting their one end side
also serves as a connecting pin with the rear end of the operating arm 70.

v is the pivot point on the other end side of one link rod 71,
A mounting frame 20 fixedly provided to the body 2 of the self-propelled transport vehicle B is formed as a support shaft that pivotally supports the link rod 71 in a fixed position. The link rod 71 is provided with an extending portion 71a extending beyond the pivot point v on its base end side (other end side), and the extending portion 71a is connected to the mounting frame 20.
When the link rod 71 rotates back and forth about the pivot point v, the cam 90 is attached to the cam surface 90b of the cam 90, which is rotatably provided to the left and right by a support shaft 90a.
0 to rotate left and right (Figure 10).
The rotating end 90c of the cam 90 is connected to a forward/reverse switching lever that switches the drive of the traveling device 1 into three states: a neutral state, forward drive, and reverse drive.

w is a fulcrum point on which the other end of the other link rod 72 is fixed, and the mounting frame 21 is fixed to the fuselage 2.
It also serves as a connecting pin with the rotating end of another link rod 75 which is supported so as to rotate around a pivot point z provided at a fixed position. Said another link rod 75
The connecting point 75a is connected to the parking brake via a wire, the connecting point 75b is connected to the throttle lever of the engine E via a wire, and the connecting point 75b is connected to the throttle lever of the engine E via a wire.
5c is connected to the gear shift lever of engine E.

Further, 91 is the pivot point v of the link rod 71 mentioned above.
An arm portion 91 that protrudes forward is a T-shaped bell crank that is rotatably supported left and right on a support shaft.
The working arm 70
is rotated left and right around the pivot point v. The left and right arm portions 91b and 91c of the bell crank 91 are connected to wires that are connected to operating levers of the travel clutches of the left and right travel devices 1, 1, respectively.

In addition, the lower end of a switching lever 3b, which is a means for tilting and rotating back and forth about a rotational fulcrum 3a on the front side of the aircraft body 2, is connected to the front end of the aforementioned operating arm 70, as shown in FIG. .

Next, FIG. 10 shows each operating state of the above-mentioned telescopic mechanism 7. The telescopic mechanism 7 is in a state where the traveling devices 1, 1 are stopped in the state A in FIG. 10, that is, in a neutral state; , E is a forward left turn, F is a reverse right turn, G is a reverse left turn, J is a stop when turning right, and RI is a stop when turning left.

Next, FIG. 11 is an explanatory diagram of the control operation of the traveling devices 1, 1 of the telescopic mechanism 7, in which A is when stopped (neutral), B is when moving forward, C is when moving forward and turning left, and D is when turning left. Indicates when going backwards or turning left. In addition, in the same figure, 1a and 1
93, 94, 95, 96, . . . are connecting wires, and 97 and 98 are interlocking tension rollers.

The embodiment device constructed in this manner operates as follows.

The front end of the operating arm 70 of the telescoping mechanism 7 provided on the front of the body 2 of the self-propelled transport vehicle B is connected to the rear end of the connecting rod 6 connected to the rear part of the body of the self-propelled harvester A as shown in Fig. 5. The vehicle is then connected to a towing vehicle. At this time, when the telescopic mechanism 7 is in a neutral state as shown in FIG. 9A, it is in a stopped state.

Next, when the self-propelled harvester A, which is a towing vehicle, moves forward, the connecting rod 6 moves forward, causing the telescopic mechanism 7 to extend forward and switch to the state shown in FIG. The type transport vehicle B follows the self-propelled harvester A and moves straight forward.

Next, when the self-propelled harvester A, which is a towing vehicle, is stopped, the telescopic mechanism 7 contracts due to the movement of the self-propelled harvester B, which follows and moves forward, and becomes the state shown in Fig. 10 A. The forward movement of mobile transport vehicle B is stopped.

Next, when the self-propelled harvester A is moved backward from this state, the telescopic mechanism 7 is switched to the state C in FIG. 10, and the self-propelled transport vehicle B is caused to move backward.

Next, when self-propelled harvester A stops moving backward in this state, self-propelled transport vehicle B continues to move backward.
With this movement, the telescoping mechanism 7 is switched to the neutral state position A in FIG. 10, and the self-propelled transport vehicle B is stopped.

Additionally, when the self-propelled harvester A disengages one side clutch and turns to one side while traveling forward, the operating arm 70 of the telescoping mechanism 7 rotates in the left-right direction relative to the self-propelled transport vehicle B. As a result, the state shown in FIG. 10 (D) or (E) is reached, and the traveling clutch of the rotating side traveling device 1 of the self-propelled transport vehicle B is disconnected as shown in FIG. 11 (C).

Furthermore, when the self-propelled harvester A is turned to the right or left while traveling backwards, the telescopic mechanism 7 becomes the state shown in FIG. Disconnect the side clutch on the side opposite to the swing side of the self-propelled harvester.

Moreover, if the self-propelled work vehicle B is removed from the body of the self-propelled harvester A, which is a towing vehicle, its traveling device 1,
By controlling the switching operation lever 3b and each operation lever provided on the body of the self-propelled work vehicle B, the self-propelled work vehicle B can be driven by itself.

As explained above, the self-propelled work vehicle according to the present invention is capable of self-propelled by controlling the drive of the engine of the traveling device using the operating device. The telescoping mechanism is connected to the aforementioned operating device so as to control the driving of the traveling device by the telescoping operation of the front and rear thereof, and the telescoping mechanism is provided with a connecting portion for towing. Therefore, it can be used as a normal self-propelled work vehicle under certain conditions, and
By connecting and towing it to a towing vehicle, the traveling device of the self-propelled work vehicle is automatically controlled in accordance with the control of the traveling device of the towing vehicle, and the towing vehicle can be operated like a normal trailer. The vehicle can now be towed by an operator alone.

[Brief explanation of drawings]

1, 2, and 3 are explanatory diagrams of a conventional working vehicle, FIG. 4 is a side view of a self-propelled working vehicle according to the present invention, and FIG. 5 is an explanatory diagram of the configuration of the same telescopic mechanism. , FIG. 6 is an explanatory diagram of the configuration of another embodiment, and FIG.
8 and 8 are explanatory diagrams of the action of the telescoping mechanism, FIG. 9 is an exploded perspective view of another embodiment of the telescoping mechanism, and FIG. FIG. 11 is an explanatory diagram showing each operating state of the telescopic mechanism, and FIG. 11 is an explanatory diagram of the control operation of the traveling device of the telescopic mechanism. Explanation of drawing symbols A... Traction vehicle, B... Self-propelled transport vehicle (work vehicle), a... Harvester, b... Farm wagon, c... Hopper, 1... Traveling device, 10... Connecting hitch , 2... Aircraft, 20,2
1...Mounting frame, 3...Maneuvering device, 3a
...Rotation fulcrum, 3b...Switching operation lever, 40,
41... Hydraulic system, 5... Beam, 50, 52...
...Fulcrum, 51... Frame, 6... Connection rod, 7... Telescopic mechanism, 70... Operating arm, 70a... Connection pin, 70b... Connection portion, 71a... Extension portion, 7
1, 72, 73, 74, 75... link rod, 75
a, 75b, 75c... Connection point, 8... Seat, 9
0...Cam, 90a...Spindle, 90b...Cam surface, 90c...Rotating end, 91...Bell crank, 91a, 91b, 91c...Arm portion, 92
...Parallel link, 92a, 92b...Connection shaft, E
...Engine, M...Mission part, T...Power vehicle, u...Connection shaft, v, w, z...Shaft fulcrum.

Claims (1)

[Claims] 1 A self-propelled machine that supports a working machine and is equipped with a running gear, is equipped with an engine that drives the running gear, and is equipped with an operating device that controls the drive of the running gear to enable self-propulsion. A telescoping mechanism is installed on the front side of the body of the type work vehicle, and the telescoping mechanism is connected to the aforementioned operating device so as to control the drive of the traveling device by the telescoping action of the front and back. A self-propelled work vehicle characterized in that the telescoping mechanism is equipped with a connecting portion for towing.