JP2000053042A - Vehicle conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle conveying device for wheel mounted vehicles capable of accurately setting positions when they are to be carried and the cost of equipment not being high. SOLUTION: This vehicle conveying device is provided with a vehicle carrying frame 20 on whose bottom part 23 a manufactured vehicle 1 is to be loaded, a conveyor driving device 10 loaded on a conveyor track 19 installed on the upper part of a floor surface 8 and conveyably driving the vehicle loading frame 20 in the state of being connected to the conveyor track 19 so that it can be rotated and elevated along the floor surface 8, and a rotational driving device 27 provided between the conveyor driving device 10 and the vehicle loading frame 20 so that the vehicle loading frame 20 can be rotated from the normal rotation position along the floor surface 8. The bottom part 23 is fitted with an air bearing 22 for lifting up the vehicle loading frame 20 from the floor surface 8. A pair of right and left roller groups 31 rotated by centering a vertical shaft are arranged along the direction of carrying the manufactured vehicle 1 as a centering device to guide the outside surface of the right and left wheels 1, 1a when the manufactured vehicle 1 is being carried in.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle transport device for transporting a production vehicle to which wheels have already been assembled in an automobile production process.

[0002]

2. Description of the Related Art As shown in FIG. 5, when it is necessary to move a transport line of a manufacturing vehicle from one transport path 2 to another lateral transport path 3 due to the arrangement of factory facilities, etc. A so-called traverser 5 for moving the vehicle in a mounted state is provided, or an unmanned transporter in which only the front wheels of the vehicle are mounted and the rear wheels travel on the floor surface is used.

[0003]

In the former case, it is necessary to dig the floor surface to install the equipment, which increases the equipment cost. In the latter case, it is necessary to jack up the front wheels to the unmanned transport machine. It is difficult to set the position and carry out the centering at the time of carrying out at the entrance of the transfer path, and there is a problem that a centering device is required in the periphery.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a vehicle transport apparatus of the kind described at the beginning, which does not increase the equipment cost and can accurately set the position at the time of unloading.

[0005]

According to the present invention, there is provided a vehicle transport apparatus for a manufacturing process for transporting a manufacturing vehicle having wheels mounted thereon, according to the present invention.
Transporting and driving the vehicle-mounted frame in a state in which the manufacturing vehicle is mounted on a transport track installed above the floor surface and connected so that it can rotate and move up and down along the floor surface. A transport drive device, and a rotary drive device provided between the transport drive device and the vehicle-mounted frame so as to rotate the vehicle-mounted frame from its reference rotation position along the floor surface. A pair of rollers on both sides, which rotate around a vertical rotation axis, are manufactured as a centering device so that an air bearing that lifts the vehicle mounting frame is installed and guides the outer surfaces of both wheels when the manufacturing vehicle is carried in. It is characterized by being arranged along the carrying direction of the vehicle.

[0006] The vehicle-mounted frame is conveyed along a conveyance track by a conveyance drive device while being floated by an air bearing. The rotational position of the vehicle-mounted frame is adjusted with respect to the transport trajectory by the rotary drive device. When the manufacturing vehicle is mounted on the vehicle mounting frame, the outer surfaces of the front and rear and both sides of the wheel are centered while being guided along a normal carrying direction by a pair of rollers on both sides.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle transport device according to an embodiment of the present invention will be described with reference to FIGS. This vehicle transport device lifts a vehicle mounting frame 20 on which the manufacturing vehicle 1 is mounted on the bottom portion 23 from the floor surface 8 and moves the vehicle on the transport track 1
9 is moved by a transport drive device 10 mounted on the transfer drive device 9. For this purpose, the upper surface 2 of the vehicle mounting frame 20
A bearing portion 21 protruding from Oa is connected to the drive shaft 16 of the transport drive device 10 so as to be rotatable and vertically movable along the floor surface 8. An air bearing 22 that floats the vehicle mounting frame 20 from the flat floor surface 8 below the transport track 19 is mounted on the bottom portion 23 of the vehicle mounting frame 20.

[0008] Between the upper surface 20a and the transport driving device 10,
As shown in FIG. 2, a rotation drive device 27 that rotates the vehicle-mounted frame 20 along a floor surface 8 from a reference rotation position indicated by a solid line whose carrying direction is aligned with the direction of the transport track 19.
Is provided. In this rotary drive device, a cylinder rod 25a is pivotally mounted on a support shaft 13 which is eccentric with respect to a drive shaft 16 and is provided below a base portion 11 of the transport drive device 10, and a rear end portion protrudes from an upper surface 20a. And an air cylinder 25 pivotally mounted on a support shaft 26. This allows
When the air cylinder 25 is driven forward at the reference rotation position indicated by the solid line, the vehicle mounting frame 20 is rotated by 90 ° to the position indicated by the dotted line.

A centering device 30 for aligning the loaded manufacturing vehicle 1 in the normal loading direction of the vehicle mounting frame 20 is also mounted on the bottom portion 23. As shown in FIG. 3, the centering device is configured such that when the manufacturing vehicle 1 is carried into the vehicle mounting frame 20, both sides and front and rear wheels 1a, 1b are provided.
Bottom 2 along the loading direction so as to guide the outer surface of
3, a pair of rollers 31 on both sides supported by a vertical rotation shaft arranged in a pair, and a front wheel 1a and a rear wheel 1b by a cylinder 35.
And a pair of roller groups 32 on both sides that respectively press and drive the inner side surfaces of the inside of the vehicle toward the outside of the vehicle compartment. As its drive mechanism, a pair of racks 34 meshing with a pinion 33 supported by a vertical rotating shaft 33a erected on the bottom 23 at front and rear sides in the loading direction, respectively, and extending in a direction perpendicular to the loading direction. And a roller support frame 36 attached to the leading end of the roller support frame 36 and supporting the roller group 32 with a vertical rotation axis arranged in the carrying direction. This allows
When the cylinder 35 drives one rack 34 in the orthogonal direction, the other rack 34 is driven in the opposite orthogonal direction in conjunction with the pinion 33.

[0010] As shown in FIG.
1 is located at the unloading location 2a of the transport path 2
As shown in the figure, a pantograph type elevating device 29 for raising and lowering between a position where the bottom portion 23 is flush with the floor surface 8 and a position where the bottom portion 23 is movably raised above the floor surface 8 is embedded. The transport track 19 is erected along a dotted line shown in FIG. 5 in order to carry the slat conveyor into the transport path 3 of the slat conveyor which is shifted laterally from the transport path 2 which is a slat conveyor, for example.

As shown in FIGS. 4 and 5, the carry-in place 3a of the transport path 3 is provided with air cylinders 41 and 42 which press the four front wheels 1a and the rear wheels 1b in an interlocking manner toward the passenger compartment. Centering device is arranged. Front wheel 1
The strokes on both sides of the cylinder rod 44 having the pad 43 at the tip of the air cylinder 41 are set to the same stroke for centering, and similarly set for the rear wheel 1b. The height positions of these cylinder rods 44 are adjusted so that the roller group 31 does not interfere.
Is set in the upper position. The air cylinders 41 and 42 are movable between the operating position and the relief position in the direction of the transport path 3 so as not to interfere with the vehicle-mounted frame 20 carried along the transport path 19.

The operation of the thus configured vehicle transport device is as follows. The production vehicle 1 is moved from the transport path 2 to FIG.
As shown in FIG. 7, a tire pushing device (not shown) using an air cylinder is mounted on the vehicle mounting frame 20 at a reference rotation position lowered from the floor surface 8 and the conveyance path 2 by the thickness of the bottom portion 23 by the lifting device 29. The tires of the rear wheels are pushed and carried in. Since the periphery of the bottom portion 23 is restrained, even when the transport path 2 is inclined, the vehicle mounting frame 2
0 does not move. When carrying in the wheels 1a, 1
The outer surface of the roller group b is guided in the normal carrying direction by the roller group 31, and the roller group 32 is moved to the outside of the passenger compartment by the operation of the cylinder 35 with the front wheel 1a moving on the front wheel turntable 23a. The cut of 1a is corrected, and the centering setting is performed at the same distance from the center pinion 33 together with the rear wheel 1b.

The transport driving device 10 is driven in a state where the bottom portion 23 is raised by the plate thickness by the lifting device 29, and the vehicle mounting frame 20 is moved along the transport track 19 shown by a dotted line in FIG.
To move. The floor surface 8 is a flat floor made of a synthetic resin, and the vehicle mounted frame 20 is slightly lifted up by being discharged from the air bearing 22 to be conveyed in a state where the lifting load of the conveyance driving device 10 is eliminated. You.
By operating the rotation drive device 27 immediately before the loading location 3a, the vehicle mounting frame 20 is rotated 90 ° in a floating state, and is orthogonal to the transport path 19, that is, the transport path 3
The air bearing 22 stops its operation and lands as shown in FIG.

In this state, in order to correct the inclination of the vehicle body position when the vehicle is carried in or the inclination of the wheels 1a and 1b due to the turning of the steering wheel, the air cylinders 41 and 42 are arranged such that the pads 43 face the four wheels, respectively. Is moved, and the cylinder rods 44 on both sides are moved forward and backward by the same distance.
By moving in the direction orthogonal to
Is performed with higher accuracy. Next, it is similarly pushed into the transport path 3 by the tire pushing device.

Further, it is possible to reduce the rotation angle of the rotary drive device 27 by setting the transport path 19a along the path shown by the two-dot chain line in FIG. Conversely, the operating angle of the rotary drive may be set to be greater than 90 ° in some cases in relation to the path of the transport trajectory.

[0016]

According to the first aspect of the present invention, since the vehicle-mounted frame is levitated by the air bearing, the hanging load applied to the transport driving device mounted on the transport track and transporting the vehicle-mounted frame is eliminated, and the cost is reduced. Hanging and transporting is possible with a miniaturized device with a low equipment cost. In addition, by being able to rotate the vehicle mounting frame in the floating state,
The degree of freedom in setting the path of the transport path increases. The roller group that guides the wheels enables centering along a predetermined carrying direction into the vehicle mounting frame, so that centering during subsequent carrying is unnecessary or simple. According to the second aspect of the invention, the inner surface of the wheel is pressed and driven by the roller group, so that the centering at the time of unloading is performed more accurately.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle transport device according to an embodiment of the present invention.

FIG. 2 is a plan view of a rotary drive device of the vehicle transport device.

FIG. 3 is a plan view of a centering device of the vehicle transport device.

FIG. 4 is a rear view of the vehicle conveyance device at the time of completion of conveyance.

FIG. 5 is a plan view showing a schematic configuration of a conventional vehicle transport device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manufacturing vehicle 1a Front wheel 1b Rear wheel 8 Floor surface 10 Transport drive device 19 Transport track 23 Bottom 27 Rotation drive device 30 Centering device 31, 32 Roller group

Claims (2)

[Claims] 1. A vehicle transport device for a manufacturing process for transporting a manufacturing vehicle having wheels mounted thereon, wherein the vehicle is mounted on a vehicle mounting frame on which a manufacturing vehicle is mounted on a bottom portion, and on a transport track installed above a floor surface. A transport drive device for transporting and driving the vehicle-mounted frame in a state where the vehicle-mounted frame is connected to be rotatable and vertically movable along the floor surface, and rotating the vehicle-mounted frame from the reference rotation position along the floor surface. And a rotary drive device provided between the transport drive device and the vehicle mounting frame, and an air bearing for floating the vehicle mounting frame from the floor surface is mounted on the bottom portion, and a manufacturing vehicle is provided. To guide the outer surfaces of the wheels on both sides when loading
A vehicle transport device, wherein a pair of rollers on both sides rotating about a vertical rotation axis are arranged as a centering device along a carrying-in direction of a production vehicle. 2. A pinion that rotates about a vertical rotation axis, a pair of racks that mesh with each other on the front and rear sides in the loading direction, and extend in a direction perpendicular to the loading direction, and a transport trajectory on the tip end thereof. And a pair of rollers on both sides facing the inner surfaces of the wheels on both sides are arranged so that the pair of rollers on both sides are interlocked by the rotation drive of the pinion. 2. The vehicle transport device according to claim 1, wherein two sets of centering devices for centering the wheels in the carrying-in direction by moving the wheels outside the vehicle compartment are mounted on the bottom of the vehicle mounting frame for the front and rear wheels. .