JPH03224807A - Connection structure of truck - Google Patents

Abstract

PURPOSE:To automatically connect tow car and a towed car by mounting a connection body provided with a connection recess opened on the side, on either the tow car or the towed car, and by mounting a vertical pin that can intrude into the connection recess, on another car. CONSTITUTION:A base end of an arm 10 extended horizontally is supported by a bracket provided on the rear part of a frame 2 of a free-running tow car 1 through a pin 11, so as to vibrate freely, while a connection body 12 provided with a connection recess 14 that penetrates vertically, is mounted on the front end of the arm 10. One side surface 15 of the connection recess 14 is opened, and the opening can be closed by a lever-like opening/closing body 18 pivotally supported by a pin 19, while the opening/closing body 18 is energized on a closed chain position by a spring 23. When the tow car 1 runs on a circle in a running route, the arm 10 is largely swung and a connection part 25 thereby collides with a pin 28 on the side of a towed car 7. The opening/closing body 18 is opened by the pin 28, which intrudes into the connection recess 14, whereby the towed car 7 is connected to the other.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) The present invention relates to a connection structure for connecting a towing truck and a towed truck.

Conventionally, the connection between the towing dolly and the towed dolly is achieved by first moving the towing dolly close to the towed dolly, and then connecting the bottle hole provided at the end of the arm of the towing dolly to the towed dolly. This was done by aligning the pin holes with the pin holes, stopping the tow truck at the relevant position, and then inserting pins into both pin holes.

However, in such a conventional connection structure,
When connecting, it is necessary to accurately match the bottle hole of the towing truck with the bottle hole of the towed truck, and to stop the towing truck at the matching position. Since this method requires manual labor by a person, there is a problem in that a person must be placed at the connection position.

An object of the present invention is to provide a truck connection structure that allows the connection of a towing truck and a towed truck even when the towing truck is running, and eliminates the need for a worker for the connection.

This purpose is to provide a truck connection structure in which the connecting portion provided on the towing truck and the connecting portion provided on the towed truck are connected to each other to connect the towed truck. One of the connecting parts is swingably supported by a connecting body attached to one of the carts and having a connecting recess that opens on at least one side surface, and is swingably supported by the connecting body. an opening/closing body that opens and closes the opening of the connecting recess, and a biasing body that always biases the opening/closing body in the closing direction, and the other of the connecting parts has a vertical pin attached to the other truck. This can be achieved by having

When connecting the towed truck to the towed truck, first, the connecting portion of the towed truck is positioned on the movement locus of the connecting portion of the towing truck. When the towing truck is driven along the travel route in this state, the towing truck gradually approaches the towed truck. When the connecting portion of the towing truck reaches the connecting portion of the towed truck and the pin comes into contact with the opening/closing body, the pin pushes open the opening/closing body and enters the connecting recess. When the pin completely enters the connecting recess, the opening/closing body swings in the closing direction by the urging member, thereby closing the opening of the connecting recess. When the towing truck continues to travel in this state, the pin comes into contact with the wall surface of the connection recess, and both the connection parts are connected. In this way, both molds are connected automatically and while the tow truck is running.

Further, with the configuration as described in claim 2, the pin can be pulled out from the coupling recess by operating the swinging mechanism, thereby quickly and accurately disconnecting the towing trolley and the towed trolley. can be done.

Support cliff 1 Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1.2, 1 is a towing truck, and this i-pulling truck 1 has a frame 2 and a plurality of wheels 4 that are rotatably supported by the frame 2 and roll on a floor surface 3. The tow truck 1 can travel along a travel route S shown by a solid line in FIG. 2 by having one of the wheels 4 driven and rotated by a motor (not shown).

Here, the traveling route S includes an orthogonal part Sl extending in a direction perpendicular to the axle of the towed truck 7 from one side of the towed truck 7 to just in front of the towed truck 7, and a perpendicular portion Sl extending from just before the towed truck 7 to the front side of the towed truck 7. A parallel portion S extending parallel to the axle of the towed truck 7 toward
2, and an arcuate portion S3 that connects the orthogonal portion S1 and the parallel portion S2 and projects from the parallel portion S2 to the other side. The structure of the towed truck 7 is almost the same as the towed truck 1, but the towed truck 7 is not provided with a motor for driving the wheels.

A bracket 9 is attached to the rear of the frame 2 of the towing truck 1, and the bracket 8 has an arm 10 extending in the front-rear direction and having a distal end protruding backward from the frame 2.
The base end of is swingably supported via a pin 11.

At the tip of this arm 10, as shown in Figure 1.3,
A connecting body 12 is attached in which a connecting recess 14 that penetrates vertically is formed, and this connecting recess 14 is open at one side surface 15 of the connecting body 12. 18 is the connecting body 12 at the proximal end
The opening/closing body 18 is a lever-shaped opening/closing body that is supported via a pin 19 and can swing in a horizontal plane, and the length of this opening/closing body 18 is slightly longer than the width of the opening 20 of the connecting recess 14. Further, this opening/closing body 18 can swing around the pin 18 between a closed position F shown by a solid line in FIG. 3 and a released position G shown by a phantom line. When the opening/closing body 18 is located at the closed position F, its tip is in contact with the connecting body 12 near the opening 20. Reference numeral 23 denotes a coil spring as a biasing body provided so as to surround the pin 19. One end of this coil spring 23 is locked to the opening/closing body 18, and the other end is locked to the connecting body 12. As a result, the opening/closing body 18 is urged outward by the coil spring 23, that is, in the closing direction. The above-mentioned connecting body 12, opening/closing body 18, and coil spring 23 collectively constitute one connecting part 25 provided on the tow truck 1. Reference numeral 28 denotes a vertical pin as the other connecting portion that extends upward and is attached to the frame 1127 of the towed truck 7, and this pin 28 pushes open the opening/closing body 18 and enters into the connecting recess 14. be able to.

Reference numeral 31 denotes a motor with a speed reducer that is fixed to the rear part of the frame 2 and can rotate only in one direction.The output shaft 32 of the motor 31 that drives this speed reducer is equipped with a cam follower 33 as shown in Fig. 1.4. A rotating disk 34 is attached to rotatably support the. A slide bearing 36 is fixed to the rear end of the frame 2, and a vertical lifting rod 37 is supported on the slide bearing 36 so as to be movable up and down. A cross-shaped cam 38 is fixed to this lifting rod 37, and a horizontal cam groove 38 into which the cam follower 33 is inserted is formed in this cam 38.

As a result, when the motor 31 operates and the output shaft 32 and the rotary disk 34 rotate, the elevating rod 37 moves up and down while being guided by the slide bearing 3B by the cam follower 33 and the cam 38. A roller 40 that rolls into contact with the lower surface of the arm IO is rotatably supported at the upper end of the lifting rod 37, and as a result, as described above, the lifting rod 37
When the arm 10 moves up and down, the arm 10 moves to the first position with the pin 11 as the center.
It swings between a horizontal position V shown in solid lines in the figure and an inclined removal position W shown in phantom lines. The aforementioned motor 31, cam follower 33, rotary disk 34, slide bearing 36, lifting rod 37, and cam 38 collectively constitute a swinging mechanism 41 that is provided on the tow truck 1 and swings the arm 10 in the vertical direction.

45 is a detection sensor attached to the frame 2, and when this detection sensor 45 detects a dog 46 fixed to the rotating disk 34, it sends a signal to the motor 31 to stop the operation of the motor 31.

Next, the operation of one embodiment of the present invention will be explained.

It is now assumed that the towing truck 1 is traveling along the travel route S in the direction of the arrow, while the towed truck 7 is stopped at a position shown by a solid line in FIG. Here, when the tow truck l travels along the arc portion S3, it turns and changes direction as shown by the solid line, but at this time, the movement trajectory of the connecting portion 25 of the tow truck l
The trace T deviates from the travel route S as shown by the broken line in FIG. When the towed truck 7 is connected to the towed truck 1 traveling along the traveling route S, the towed truck 7 is connected so that the pin 28 of the towed truck 7 is located on the movement trajectory T of the connecting portion 25. Adjust the stop position. When the tow truck 1 is run along the orthogonal section S1 in this state, the tow truck 1
1 gradually approaches the towed cart 7. Next, tow truck 1
When the tow truck 1 begins to travel along the arc portion S3, the towing truck 1 turns in front of the towed truck 7, and the arm 10 swings greatly due to this turning, so that the connecting portion 25 approaches the pin 28. When the connecting portion 25 of the towing truck 1 reaches the position of the pin 28 of the towed truck 7 and the pin 28 comes into contact with the opening/closing body 18, the pin 28 pushes the opening/closing body 18 inward and connects it. It invades into the recess 14. When the pin 28 completely enters the connecting recess 14, the opening/closing body 18 swings outward to the closing position F due to the biasing force of the coil spring 23, and its tip is attached to the connecting body 14.
It stops at the position where it abuts, and the opening 20 of the connecting recess 14 is closed 11-. When the tow truck 1 continues to travel in this state, the pin 28 comes into contact with the wall surface 1B of the coupling recess 14, and the coupling portion 25 and the pin 28 are coupled together. In this way, the towing truck 1 and the towed truck 7 are connected automatically and while the towing truck 1 is traveling. At the end of this connection, the towing truck 1 has almost completed its turn, so the axle of the towing truck 1 and the axle of the towed truck 7 are almost parallel. As a result, even when the towing truck 1 pulls the towed truck 7, almost no force component in the direction perpendicular to the axle is applied to the towed truck 7, and the towed truck 7 smoothly moves along the parallel portion S2. drive.

Next, when the towed cart 7 reaches the separation position,
The towed truck 7 is separated from the tow truck 1, but in this case the tow truck 1 is decelerated or stopped. Next, the motor 31 is operated to rotate the output shaft 32 and the rotary disk 34. As a result, the lifting rod 37 rises while being guided by the slide bearing 38 by the cam follower 33 and cam 38, and the arm 10 is swung upward about the pin 11 from the horizontal position V to the removal position W. Then, when the arm IO reaches the removal position W, the detection sensor 45 detects the dog 46 and stops the operation of the motor 31. Due to this upward swinging of the arm lO, the connecting portion 25 is pulled out from the pin 28, and the pin 28 and the connecting portion 2
5 is released, and the towed truck 7 is separated from the towed truck 1. Next, when the towing truck 1 travels and leaves the towed truck 7 by a predetermined distance, the motor 31 is activated again to lower the lifting rod 37 to the initial position, and the arm 10
Return it from the removal position W to the horizontal position V. In this manner, the pin 28 can be pulled out from the coupling recess 14 simply by operating the swinging mechanism 41, and the connection between the towing truck 1 and the towed truck 7 can be quickly and accurately released.

Figure 5.6 shows another embodiment of the invention. In this embodiment, the connecting body 51 is fixed to a first block 52 disposed on the proximal side, a second block 53 disposed on the distal side, and both ends are fixed to the lower surfaces of the first and second blocks 52 and 53. A connecting recess 57 that opens to both one side 55 and the other side 56 of the connecting body 51 is formed between the first and second blocks 52 and 53. That's what I do. Both openings 58 and 59 of this connecting recess 57 are opened and closed by the opening and closing body 18, opening and closing bodies 60 and 61 similar to the coil spring 23, and a coil spring (not shown), respectively. In this embodiment, the pins provided on the side of the towed cart are directed downward from the bottom surface of the frame to avoid interference with the intermediate member 54 fixed to the bottom surfaces of the first and second blocks 52, 53. The animu 1o to which the connecting body 51 is attached is swung downward from the horizontal position V when the connection is released. By opening the connecting recesses 57 on both sides of the connecting body 51 in this way, the pin can enter the connecting recesses from either side, making it easier to connect the towing truck and the towed truck. Become.

In addition, in the above-mentioned embodiment, the connecting body 12 and the arm 1
Although the connecting body 12 is attached to the arm 10 with the connecting body 12 being attached to the arm 10, the arm and the connecting body may be integrally formed. Further, in the above-described embodiment, the arm 10 attached to the tow truck 1
A connecting portion 25 consisting of a connecting body 12, an opening/closing body 18, and a coil spring 23 is provided at the tip of the towed truck 7, and a pin 28 as a connecting portion is provided on the towed truck 7. However, in this invention, the towed truck 7 A pin as a connecting part may be provided at the tip of the arm, and a connecting part consisting of a connecting body, an opening/closing body, and an urging body may be provided on the towed cart. Further, in the present invention, an arm protruding forward is attached to the front part of the towed cart, and a connecting body is attached to the tip of the arm.
In addition to providing a connecting portion consisting of an opening/closing body and an urging body, a pin as a connecting portion may be provided on the towing cart.Alternatively, an arm may be attached to the towed cart and a pin serving as a connecting portion is attached to the tip of this arm. In addition, the tow truck may be provided with a connecting portion including a connecting body, an opening/closing body, and a biasing body.

As explained above, according to the present invention, it is possible to connect the towing truck and the towed truck even when the towing truck is traveling, and furthermore, it is possible to eliminate the need for a worker for the connection. .

[Brief explanation of drawings]

FIG. 1 is a partial side view showing one embodiment of the present invention, and FIG.
The figure is a schematic plan view illustrating the state of towing and movement of the towed truck, Figure 3 is a view taken along the line I-I in Figure 1, and Figure 4 is a view taken along I-I in Figure 1.
FIG. 5 is a plan view of a connecting portion showing another embodiment of the present invention, and FIG. 6 is a view taken along the ■-■ arrows in FIG. 5. 1... Towing trolley?・・・Towed trolley 12・
...Connection body 14...Connection recess 18...Opening/closing body 2o...Opening 23...Biasing body
25... Connecting part 28... Connecting part (pin)

Claims (2)

[Claims] (1) A truck connection structure in which a connecting portion provided on a towing truck and a connecting portion provided on a towed truck are connected to each other to connect a towing truck and a towed truck,
Either one of the connecting parts includes a connecting body that is attached to one of the carts and has a connecting recess that opens on at least one side, and a connecting body that is swingably supported by the connecting body and that swings to form the connecting recess. It has an opening/closing body that opens and closes the opening of the opening/closing body, and a biasing body that always biases the opening/closing body in the closing direction, and
The other of the coupling parts has a vertical pin attached to the other carriage, and after the pin pushes open the opening and closing body and enters the coupling recess, the opening and closing body is pressed against the biasing body. A bogie connection structure characterized in that the bogies are connected by swinging and closing an opening of a connection recess. (2) Either one of the connecting parts is provided at the tip of an arm extending in the front and back direction that is swingably supported on the rear or front part of the towing or towed truck, and the arm is swingable in the vertical direction. 2. The bogie connection structure according to claim 1, further comprising a swinging mechanism for causing the bogie to move.