JPH04298418A - Magnetic levitation transfer device - Google Patents

Abstract

PURPOSE:To improve the function of a magnetic brake for stopping/running in a magnetic levitation transfer device. CONSTITUTION:Electromagnets 2 for stopping are disposed facing each other at a predetermined interval on the right and left of a transfer passage 1. A magnetic body 11 is suspended to a center line of the electromagnets 2, 2 from under a transfer table 10 levitation running over the transfer passage by unillustrated electromagnets for levitation and guiding. Plates 12 formed of nonmagnetic but conductive material are provided before and after the magnetic body. A friction force by eddy currents is generated between the plate 12 and the magnet 2, thereby the transfer table is stopped stably.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation conveyance device, and more particularly to an electromagnetic brake mechanism thereof.

0002

[Prior Art] Such a mechanism generally consists of stopping electromagnets placed oppositely on the left and right sides at a predetermined interval on the conveying path side, and a magnetic member on the conveying table side placed on the center line of these stopping electromagnets. ing. The conveyor table is then stopped at a predetermined position by attracting the magnetic member using an electromagnet.

0003

[Problems to be Solved by the Invention] Since the conventional electromagnetic brake mechanism uses only magnetic spring force, it is difficult to stop the conveyance table stably.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic levitation conveyance device that can stably stop a conveyance table.

[0005]

[Means for Solving the Problems] According to the present invention, in an electromagnetic brake mechanism consisting of a stopping electromagnet on the conveyance path side and a magnetic member on the conveyance table side, non-magnetic and highly conductive materials are provided on both sides of the magnetic member in the direction of movement. A plate is installed.

Further, according to the present invention, plates made of non-magnetic and highly conductive material are disposed at least on both left and right sides of the magnetic member in the traveling direction of the electromagnetic brake mechanism consisting of a stopping electromagnet on the transport path side and a magnetic member on the transport table side. are doing.

The above-mentioned non-magnetic and highly conductive materials, such as aluminum and copper, are preferred.

[0008]

[Operation] In the magnetically levitated conveyance device constructed as described above, a damping force is generated by eddy current between the plate of non-magnetic and highly conductive material and the electromagnet, so that the conveyance table is stably stopped.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the magnetic levitation conveyance device according to the present invention consists of a conveyance path 1 and a conveyance table 10 that is levitated within the conveyance path 1. 1 is provided with a levitation electromagnet and a guide electromagnet (not shown), and a magnetic member facing these electromagnets is provided on the other side.Stopping electromagnets are placed at a predetermined interval on both the left and right sides of the transport path 1. 2, 2 are arranged facing each other. On the other hand, a magnetic member 11 is vertically provided on the center line of the electromagnets 2, 2 from the conveyance table 10. For example, aluminum,
Plates 12, 12 made of non-magnetic and highly conductive material such as copper
are provided with the magnetic member 11 sandwiched therebetween.

[0011] Therefore, a damping force due to the eddy current is generated between the plates 12, 12 and the electromagnets 2, 2, and the conveyance table 10 is stably stopped.

FIG. 3 shows another embodiment of the present invention, in which plates 12a, 12a made of a non-magnetic and highly conductive material are provided on both the left and right sides of the magnetic member 11 in the traveling direction.

FIG. 4 also shows another embodiment of the present invention, in which the magnetic member 11 is surrounded by a piece 12b of non-magnetic, highly conductive material whose four sides are parallel and orthogonal to the direction of travel.

[0014]

[Effects of the Invention] Since the present invention is constructed as described above, the conveyance platform can be stably stopped by the damping force caused by the eddy current generated between the plate or piece of non-magnetic and highly conductive material and the electromagnet. be able to.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional view of FIG. 1.

FIG. 3 is a drawing corresponding to FIG. 2 showing a second embodiment of the present invention.

FIG. 4 is a drawing corresponding to FIG. 2 showing a third embodiment of the present invention.

[Explanation of symbols]

1... Conveyance path 10...Transportation platform 11...Magnetic member 12...Plate 12a... plate 12b... Peace

Claims (2)

[Claims] [Claim 1] An electromagnetic brake mechanism consisting of a stopping electromagnet on the conveyance path side and a magnetic member on the conveyance table side is characterized in that plates made of a non-magnetic and highly conductive material are disposed on both sides of the magnetic member in the direction of movement. Magnetic levitation transport device. 2. An electromagnetic brake mechanism comprising a stopping electromagnet on the conveyance path side and a magnetic member on the conveyance table side, wherein plates made of a non-magnetic and highly conductive material are disposed at least on both left and right sides of the magnetic member in the traveling direction. A magnetic levitation transport device.