JP2803919B2 - Transport equipment using self-propelled trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transporting device using a self-propelled trolley, which is used, for example, in an automobile production plant to support an automobile body and transport it between work processes.

[0002]

2. Description of the Related Art Conventionally, as this kind of equipment, for example, a self-propelled truck mounted on a rail laid on the floor via wheels is made to be able to run on a fixed route, and a pair of front and rear support devices are mounted on the truck body. A configuration is provided in which one support device is freely movable toward and away from the other support device, and a detection device for rear-end collision prevention capable of detecting a preceding self-propelled vehicle is provided at the front of the self-propelled vehicle. ing.

According to this conventional configuration, by moving one support device toward and away from the other support device, it is possible to freely support automobile bodies of various lengths (shapes), and to run a self-propelled vehicle. The bogie can detect the preceding self-propelled bogie with the detection device for preventing rear-end collision and control the traveling, so that the vehicle body can be transported between work processes without rear-end collision with the preceding self-propelled bogie.

[0004]

According to the conventional structure described above, each self-propelled vehicle is formed to have a length capable of coping with the longest vehicle body, and the detection distance of the rear-end collision prevention detection device is a certain distance between vehicles. It is set so that a distance occurs. As a result, the traveling density of the self-propelled bogie on the work line becomes low, so that an efficient work line cannot be formed.Moreover, a gap is generated between the self-propelled bogies, so that the worker can transfer between the self-propelled bogies. Not easily and safely.

It is an object of the present invention to provide a vehicle which can run continuously without any gaps between the self-propelled vehicles while maintaining a distance between the self-propelled vehicles for preventing a rear-end collision. It is an object of the present invention to provide a transport facility using a self-propelled vehicle that can increase the traveling density of the self-propelled vehicle.

[0006]

In order to achieve the above-mentioned object, the present invention provides a transportation system using a self-propelled vehicle, which is provided with a self-propelled vehicle capable of traveling on a fixed route. A pair of front and rear support devices, one of which is freely approachable and separable, is provided, and a cover body is continuously provided outwardly in the front-rear direction from one of the front and rear ends of the bogie main body. The body is connected to the outside in the front-rear direction, and the self-propelled vehicle is provided with a rear-end collision prevention detection device capable of detecting the preceding self-propelled vehicle and changing the detection distance.

[0007]

According to the construction of the present invention, the self-propelled carriage is configured such that the tip of the plug-in body is fitted into the cover body while the longest transported object (automobile) is supported, and the supported transported vehicle is supported. The detection distance by the rear-end collision detection device is changed based on the information of the object (length information, etc.).

As a result, the self-propelled vehicle controls the traveling while detecting the preceding self-propelled vehicle based on the detection distance set by the rear-end collision prevention detection device, so that the self-propelled vehicle does not collide with the preceding self-propelled vehicle. You can run on the line. In this case, only by changing the fitting length according to the length of the transported object supported, a continuous working floor without any gap can be always formed from the bogie main body to the insertion body and the cover body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a frame provided on the floor 2, and a pair of left and right rails 5 is disposed above the frame 1 via support rails 4. The work line (constant route) 8 is formed by the self-propelled carriage 20 traveling while being supported and guided by the rail 5.

The self-propelled vehicle 20 has a lower frame 22 integrated with a main body 21 of the vehicle. A pair of left and right wheels 23 are provided on the lower frame 22 so as to be separated from each other back and forth, and mounted on the rail 5 via these wheels 23. Is placed. For example, the front wheel 23 is interlocked with a driving device 24 provided on the lower frame 22. The driving device 24 can be driven forward and reverse, and an instruction from a control device 25 provided on the lower frame 22 is provided. Is controlled by

A front support device 26 is provided at a front portion of the bogie main body 21. The front support device 26 is provided with a lower frame 22.
The fixing member 27 includes a front receiving member 29 disposed on the fixing member 27 via a lifting / lowering guide device 28, and a lifting / lowering device 30.

A rear support device 31 is provided at a rear portion of the bogie main body 21, and the rear support device 31 is provided with a lower frame 22.
Fixed member 27 via a rail 32 and a roller 33
A movable member 34 which can be freely moved toward and away from the movable member 34, a rear receiving member 36 disposed on the movable member 34 via a lifting / lowering guide device 35, and a lifting / lowering device 37.

With this configuration, the rear support device 31 can be freely moved toward and away from the front support device 26. The front support device 26 can be freely moved toward and away from the rear support device 31. Both the support devices 26 and 31 may be allowed to approach and separate.

From the rear end of the bogie main body 21, a cover 40
The cover body 40 has a width similar to the width of the bogie main body 21, and is formed in a flat box shape having open rear and lower surfaces. And from the front end of the bogie body 21,
An insert 41 that can be fitted in the cover body 40 from the front-rear direction is connected to the front, and the insert 41 has a width similar to the width of the bogie main body 21.

Here, the self-propelled vehicle 20 is configured such that the tip end of the plug-in body 41 is fitted into the cover body 40 in a state where the longest vehicle body 50 (an example of a transferred object) is supported. The cover body 40 and the insertion body 41 may be interchanged.

The lower frame 22 is provided with the preceding self-propelled truck 2
A rear-end collision prevention detection device 45 capable of detecting 0 and changing the detection distance is provided. This rear-end collision detection device 45
Is a photoelectric tube type comprising, for example, a light emitter and a light receiver, is provided on the front and rear surfaces of the lower frame 22, and is provided on the front and rear surfaces of the lower frame 22 facing the detection device 45 for preventing rear-end collision. Is provided. The rear-end collision detection device 45 is connected to the control device 25.

A power supply device 16 is disposed on the frame 3 side via a bracket 15, and a self-propelled vehicle 20 is provided with a current collector 17. The operation of the above configuration will be described below.

The position of the rear support device 31 of the self-propelled vehicle 20 is changed according to the length of the vehicle body 50 to be transported, that is, according to the pitch between the axles 51. This can be performed by moving the movable member 34 by an actuating device or a manual operation, and moving the rear receiving member 36 toward and away from the front receiving member 29.

By mounting the axle 51 on the front receiving member 29 and the rear receiving member 36 at the start end of the working line 8, the self-propelled vehicle 20 supports the vehicle body 50. Information of the vehicle body 50 (such as length information) is set in the control device 25. Therefore, the detection distance by the rear-end collision prevention detection device 45 is changed based on this set. The level adjustment of the vehicle body 50 is performed by the lifting devices 30 and 37 to receive the receivers 29 and 3.
6 can be adjusted by raising and lowering.

The self-propelled carriage 20 travels on the work line 8 by the operation of the drive unit 24. At this time, the traveling of the self-propelled vehicle 20 is controlled while detecting the preceding self-propelled vehicle 20 by the rear-end collision prevention detection device 45 based on the set detection distance.
Traveling on the work line 8 without colliding with the vehicle.

At this time, the self-propelled vehicle 20 is configured such that the tip of the insertion body 41 is fitted into the cover body 40 in a state where the longest vehicle body 50 is supported. Only the fitting length changes in accordance with the length of the
1. A continuous working floor without gaps is formed over the cover body 40.

During such traveling, the carriage body 21
An operator on the floor or the floor 2 performs various operations on the vehicle body 50, and a robot installed on the side of the work line 8 performs various operations on the vehicle body 50. At this time, various operations by the worker from the bogie main body 21 and transfer of the worker between the bogie main bodies 21 are performed as described above. Since there is no continuous working floor, it can be performed easily and safely without dropping the feet.

The vehicle body 50 that has undergone the intended work as described above is unloaded from the self-propelled vehicle 20 at the end of the work line 8 and is moved to the next step. The empty self-propelled trolley 20 is returned to the start end of the work line 8.

In the above embodiment, the vehicle body 50 is shown as the object to be conveyed.
It can handle various transported objects having different lengths.
The working line 8 is formed on a part or all of the circulation line in plan view or the circulation line in side view.

[0025]

According to the present invention having the above-described structure, the self-propelled vehicle is configured such that the tip of the insertion body fits in the cover body in a state where the longest object is supported, and the supported object is supported. By changing the detection distance of the rear-end collision detection device based on the information (length information, etc.), the self-propelled vehicle can detect the rear-end collision detection device based on the detection distance set for the preceding self-propelled vehicle. The traveling control can be performed while detecting the vehicle, and the vehicle can travel on the work line without colliding with the preceding self-propelled bogie. At that time, only the fitting length changes according to the length of the transported object supported. A continuous working floor without gaps can be formed from the bogie main body to the plug-in body and the cover body.

[0026] Therefore, while the distance between the self-propelled vehicles can be secured to prevent rear-end collision, the vehicle can run continuously without any gap between the self-propelled vehicles, and the traveling density of the self-propelled vehicles on the work line can be reduced. It is possible to form a high and efficient work line, and the operator can easily and safely transfer between the self-propelled vehicles without dropping a foot.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a side view of a self-propelled carriage in a work line.

FIG. 2 is an enlarged side view of a main part in FIG.

FIG. 3 is a plan view of the self-propelled carriage on the work line.

FIG. 4 is a partially cutaway front view of the self-propelled carriage on the work line.

[Explanation of symbols]

 Reference Signs List 5 rail 8 work line (constant route) 20 self-propelled bogie 21 bogie main body 26 front support device 31 rear support device 34 movable member 40 cover body 41 plug-in body 45 rear-end collision prevention detection device 46 reflection plate 50 automobile body (transported object) ) 51 axles

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G05D 1/02 B62D 65/00 B65G 35/00 B65G 43/08

Claims (1)

(57) [Claims] 1. A self-propelled vehicle is provided which is capable of traveling on a fixed route. The self-propelled vehicle is provided with a pair of front and rear support devices that allow at least one of the vehicles to approach and separate from the vehicle body. A cover body is connected to the outside in the front-rear direction from one side, and an insertable body that can be fitted into the cover body is connected to the outside in the front-rear direction from the other side. Transport equipment using a self-propelled trolley, provided with a rear-end collision prevention detection device capable of detecting the trolley and changing the detection distance.