JPH0687440A - Article transporting device - Google Patents

Abstract

PURPOSE:To allow a traveling vehicle to travel smoothly at any part of the straight line part and the curved part of a monorail. CONSTITUTION:In traveling on the straight line part of a monorail 1, the monorail 1 is clamped by the left and right side rollers 10 and the left and right steering rollers 18 in pairs and the rolling of a traveling vehicle 3 is prevented by the left and right side rollers 10 in the upper and lower parts, and the traveling vehicle 3 is allowed to travel smoothly. In traveling on the curved part of the monorail 1, the rolling of the traveling vehicle 3 is prevented similarly in the above-described operation, and since a wheel unit turns along the monorail 1 by the steering action of the steering roller 18, and the traveling vehicle 3 travels smoothly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article conveying device.

[0002]

SUMMARY OF THE INVENTION It is an object of the present invention to make a traveling vehicle run smoothly on both straight and curved portions of a monorail.

[0003]

In order to achieve the above object, the present invention employs the following means. According to the present invention, a traveling vehicle that can travel on a monorail has a wheel unit that can horizontally swivel. The wheel unit is mounted on a monorail provided on a bracket, and left and right sides provided on left and right portions of the bracket. It has side rollers and left and right steering rollers that are urged toward the monorail by elastic spacers provided on the left and right front portions of the bracket.

[0004]

The present invention has the following functions. When the monorail is running on a straight line, the left and right side rollers and the left and right steering rollers sandwich the monorail to prevent rolling of the traveling vehicle, and the traveling vehicle travels smoothly. When running on a curved portion of a monorail, it prevents rolling of the traveling vehicle in the same manner as the above-mentioned action,
Since the wheel unit turns along the monorail by the steering action of the steering roller, the traveling vehicle runs smoothly.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the right side of FIG. 1, the rear means the left side of FIG. 1, the left means the upper side of FIG. 1, and the right means the lower side of FIG.

A monorail 1 is laid on the floor surface, and a traveling vehicle 3 can travel along the monorail 1 in any of front and rear directions. This traveling vehicle 3 has a turning shaft 7
The vehicle body 4 has a pair of front and rear wheel units 6 which are pivotably provided. The turning shaft 7 is located on the center line of the vehicle body 4 in the left-right direction. The wheel unit 6 includes a bracket 8, wheels 9 that are rotatably mounted on the bracket 8 and that are mounted on the monorail 1, and upper and lower openings formed in support members 13 that are provided on the lower left and right of the bracket 8. Two upper and lower left and right side rollers 10 that are rotatably provided on the support member 13 so as to be fitted to the support member 13 so that the axis of the support member 13 is oriented in the vertical direction, and a pivot 16 on the front and rear portions of the left and right support members 13. A pair of front and rear swinging arms 17 that are swingable left and right via a steering roller 18 that is rotatably provided on each of the swinging arms 17 such that the axis of the swinging arms 17 is oriented vertically. ing. Note that the front and rear steering rollers 18 are positioned equidistantly in the front and rear with respect to the center of the turning shaft 7. Elastic spacers 19 that come into contact with the inside and outside of the swing arm 17 are housed in the front and rear recesses 13a of the support member 13, and the free ends of the swing arm 17 face the monorail 1 by the outer elastic spacers 19. The force, and consequently the steering roller 18 is adapted to come into contact with the side surface of the monorail 1, while the elastic spacer 19 on the inside adjusts the force. The elastic spacer 19 is made of rubber
It is made of an elastic material, such as urethane resin, which has vibration damping properties compared to springs. That is, the elastic spacer 19 has less vibration unlike the spring. The center of the turning shaft 7, the axis of the wheel 9, and the vertical axis of the left and right side rollers 10 are aligned on a straight line when seen from a plane.

When the monorail 1 is running on a straight line, the monorail 1 is sandwiched by the left and right side rollers 10 and the pair of left and right steering rollers 18, and the upper and lower left and right side rollers 10 prevent the traveling vehicle 3 from rolling. The traveling vehicle 3 travels smoothly. When the monorail 1 is traveling on a curved portion, the rolling of the traveling vehicle 3 is prevented and the steering roller 18
The wheel unit 6 turns along the monorail 1 by the steering action of the steering roller 18
The imaginary line connecting the shaft centers of is no longer orthogonal to the center line of the monorail 1 (in other words, the steering roller 18 is displaced back and forth), and the spacing between the steering rollers 18 becomes larger than the thickness of the monorail 1. Since the steering roller 18 can be naturally made to follow the monorail 1 by absorbing the bending of the traveling vehicle 3, the traveling vehicle 3 travels smoothly.

The steering roller 18 may be located on the front side of the traveling vehicle 3. The monorail 1 may be provided on the ceiling side.

[0009]

The present invention has the following effects due to the above-mentioned configuration. The left and right side rollers and the left and right steering rollers sandwich the monorail to prevent rolling of the traveling vehicle, allowing the traveling vehicle to travel smoothly. When the traveling vehicle travels on the curved portion of the monorail, the wheel unit can be turned along the monorail by the steering action of the left and right steering rollers, so that the curved portion of the monorail is combined with the above effect. The traveling vehicle can be driven smoothly. By using the elastic force of the elastic spacer and the bending of the elastic spacer, the steering roller can be constantly pressed against the monorail without difficulty, so from this point as well, it is possible to travel smoothly on the straight part / curved part of the monorail. .

[Brief description of drawings]

FIG. 1 is a partially crushed plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

[Explanation of symbols]

 1 monorail 3 traveling vehicle 6 wheel unit 7 turning axis 8 bracket 9 wheel 10 left and right side roller 18 steering roller 19 elastic spacer

Claims (1)

[Claims] 1. A traveling vehicle that can travel on a monorail has a wheel unit that can horizontally swivel, and the wheel unit is a wheel mounted on a monorail provided on a bracket,
An article carrying device having left and right side rollers provided on the left and right portions of the bracket and left and right steering rollers biased toward the monorail by elastic spacers provided on the left and right front portions of the bracket.