JPH04327499A - Hoist running device - Google Patents

Abstract

PURPOSE:To enhance the running performance of a hoist which runs along a rail laid in a true-circle shape. CONSTITUTION:Gears 8a, 8b incorporated to two pairs of drive wheels 2a, 2b which rides on two opposite horizontal flanges at the inner and outer sides of a true-circle rail 1 are meshed respectively with idle gears 4a, 4b which are attached to idle shafts 11, and the diameters of the drive wheels 2a, 2b are made to be different from each other so that their circumferential speeds are equal to each other.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] This invention relates to a traveling device, and more particularly to a traveling device for a hoist that travels on rails of H-shaped, U-shaped, and I-shaped steel arranged in a perfect circle to transport cargo. be.

0002

[Prior Art] FIGS. 3 and 4 are, for example, Japanese Patent Application Laid-Open No. 52-133
652 and JP-A-52-133653, which shows a traveling device such as a hoist, and in the figure, reference numeral 1 indicates an installed perfect circular rail (only a part of it is shown in the figure). , 2 are drive-side wheels attached to a frame 3, and a hoist main body 6 such as a hoist is fixed to the frame 3 with a pin 7 and suspended. Reference numeral 4 denotes guide rollers attached to support members 5 at both ends of the frame.

Next, the operation will be explained. Drive wheels 2 rotated by a motor or the like attempt to travel in a straight line on a perfectly circular rail 1. On the other hand, the guide rollers 4 cause the traveling device to travel in a straight line along the perfectly circular rail 1. Therefore, the traveling device such as the hoist is forced to travel on the perfectly circular rail 1 due to the above.

0004

[Problems to be Solved by the Invention] The conventional traveling device is constructed as described above, and when traveling on a perfectly circular rail, the traveling device tries to travel in a straight line, so the guide rollers 4, etc. It was necessary to run in contact with the vehicle. Furthermore, since the train is forced to run on a perfectly circular rail, there are problems such as increased slipping noise and meandering.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a traveling device with a simple structure and good running performance without slipping or meandering.

[0006]

[Means for Solving the Problems] The traveling device according to the present invention has a difference in drive wheel diameter so that the peripheral speed of the inner and outer drive wheels of the rail has a speed difference commensurate with the difference in rail diameter. be.

[0007]

[Operation] The traveling device according to the present invention has the same rotational speed as viewed from the center of the perfect circular rail, and by traveling along the traveling rail, the driving wheels always ride on the center of the rail. Therefore, slipping noise and meandering are eliminated.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 1 is a rail made of I-beam steel arranged in a perfect circle, 2a and 2b are frames 3a,
Drive wheels 8a, 8b mounted opposite to 3b
are gears attached to drive wheels 2a, 2b; 4a, 4b are idle gears that mesh with these gears 8a, 8b; both ends are attached to an idle shaft 11 supported by bearings 12 of frames 3a, 3b.

Next, the operation will be explained. The rotation of the drive wheel 2a driven by a motor or the like is transmitted from a drive wheel gear 8a attached to the drive wheel 2a to the idle gear 4a. The idle gears 4a and 4b are fixed on the same axis of the idle shaft 11, and the drive wheel gear 8b transmits the rotation of the drive wheel 2a to the drive wheel 2b. The outer and inner drive wheels 2a, 2b are the drive wheels 2a, 2b.
The wheel diameters of the drive wheels 2a and 2b are set so that the circumferential speed of the drive wheels 2a and 2b is set at a speed difference commensurate with the difference in rail diameter.

0010

[Effects of the Invention] As described above, according to the present invention, by adding a gear transmission device and creating a difference in circumferential speed between the inner and outer drive wheels, a product with good running performance and high quality can be obtained at a low cost. effective.

[Brief explanation of drawings]

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

FIG. 2 is a side view thereof.

FIG. 3 is a side view showing a conventional traveling device.

FIG. 4 is a plan view thereof.

[Explanation of symbols]

1 Rail 2a, 2b Drive wheel 3a, 3b frame 4a, 4b Idle gear 6 Hoisting machine body 8a, 8b Drive wheel gear 11 Idle axis

Claims (1)

[Claims] Claim 1: A hoist traveling device equipped with two pairs of drive wheels that face each other on both the inner and outer horizontal flanges of a rail arranged in a perfect circle, and which are attached to the inner and outer drive wheels of the rail. The diameters of the inner and outer drive wheels are adjusted so that the circumferential speeds of the inner and outer drive wheels within the rail have a speed difference commensurate with the difference in rail diameter. A hoist traveling device characterized by having different settings.