JPH03166120A - Floating type transport device - Google Patents

Abstract

PURPOSE:To facilitate compliance to alteration in the body of a transport vehicle or change of the floating condition by equipping a floating type transport device using electromagnetic force, etc., with a detention adjuster for adjustment of the supporting space, which shall be located at the frame supporting part of a main transport frame supporting metal piece. CONSTITUTION:Long holes 16 are bored at the fixing part of a supporting metal piece 9 with main transport path frames 11A, 11B, which are fastened and borne while pinched by a hold plate 14 and a bolt 15. Therein, the spacing of the main transport path frames 11A, 11B is adjusted in compliance with the inter-magnet-unit dimension of a transport vehicle by the long hole 16 of the supporting metal piece 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention] (Industrial Field of Application) The present invention relates to a floating conveyance device in which a conveyance vehicle travels levitated on a track by controlling the levitation force by electromagnetic force or air pressure. (Prior art) For example, in a floating conveyance device that conveys documents, IR gold, samples, workpieces, parts, etc. between multiple points within a building,
It is required to transport objects (hereinafter referred to as workpieces) quickly and quietly. Therefore, in this type of transport device, a method is adopted in which the transport vehicle is supported on guide rails in a non-contact manner.
It is the most effective support method because it is excellent in following the guide rail and reducing noise.

Conventionally, in order to run a guided vehicle levitated by electromagnetic force, a secondary conductor plate of a single-sided linear induction motor was attached to the guided vehicle, and a stator was installed on the track side to generate the thrust necessary for acceleration and deceleration. The most widely used method is to provide the transport vehicle with the following information due to its simple structure.

(Problems to be Solved by the Invention) By the way, in this type of levitation carrier, it may be necessary to consider the stability of levitation control. An example is explained below. Figure 4 is an explanatory diagram showing an example of a guided vehicle that levitates using electromagnetic force. In the figure, the trajectory of the transport path (not shown) is as follows:
Trajectories IA and 1B made of ferromagnetic material are fixed at a predetermined interval on the left and right, and magnet nuts 2A and 2A are connected to these orbits LA and IB. A transport vehicle whose levitation is controlled by 2B is placed. A workpiece 4 is supported at the center of the transport vehicle 3 by a gripping portion (not shown). In addition, 5 is magnet unit 2A
, 2B is the vehicle body rotation axis for levitation control using the levitation support points A and B and the workpiece center of gravity C. In a magnetically levitated conveyance vehicle having such a structure, the moment of inertia of the conveyance vehicle body around the vehicle body rotation axis 5, the distance between the floating support points A and B by the magnet nuts 2A and 2B, the vehicle body rotation axis 5 and the workpiece 4 are Various control constants for the control system are determined by considering the positional relationship of the center of gravity C and the total weight of the vehicle. Further, in such a magnetically levitated conveyance vehicle, the vehicle body is designed so that optimal control can be performed on the target work 4. Furthermore, in such a magnetically levitated vehicle, the position WlrM between the magnet units 2A, 2B and the orbits IA, 1B may greatly influence the levitation state of the vehicle. When using such a transport device using a transport vehicle with a levitation control system, when it becomes necessary to transport a different workpiece, depending on the workpiece, the transport vehicle body may be replaced with a completely new one. For example, as shown in WI5, even if the weight is the same, the outer size becomes larger and the center of gravity position Co when supported by the transport vehicle.
When the workpiece 4A is located below the previous position C, or when the center of gravity is the same but the weight has increased, the inertia of the transport vehicle body (including the workpiece) around the vehicle body rotation axis 5 mentioned above. The moment becomes larger. In order to introduce a levitation control system similar to the conventional one to such a carrier body, it is necessary to consider the moment of inertia of the vehicle body and the magnet unit 2A. Emphasis can be placed on the relationship between the distance between the floating support points A and B of 2B. In other words, it is time to design the car body by changing the distance between the magnet nuts 2A and 2B depending on the workpiece. In addition, changes in the workpiece may not result in changes to the vehicle body, but may affect the previously good levitation control state. For example, this is an effect perpendicular to the direction of travel, that is, the occurrence of lateral vibration. This phenomenon can sometimes be suppressed by changing the positional relationship between the magnet units 2A, 2B and the orbits IA, IB. SUMMARY OF THE INVENTION An object of the present invention is to provide a floating conveyance device that can easily respond to changes in the body of the conveyance vehicle and changes in the floating state. [Structure of the Invention] (Means and Effects for Solving the Problems) In the present invention, a pair of main transport frames are supported by a plurality of supporting metal fittings, a track is attached to each of the main transport frames, and a track is mounted oppositely to the narrow track. In a floating conveyance device in which a floating conveyance vehicle is levitated, by providing an engagement adjustment part for adjusting the support interval of the main conveyance frame on the main conveyance frame support part of the support fitting, it is possible to This is a floating transport device that can easily respond to changes in conditions. (Example) Hereinafter, an example of the floating conveyance device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the floating conveyance device of the present invention. In the main transport path lO, main transport path frames IIA and 11B are arranged facing each other on both left and right sides, and this main transport path frame II
A. On the intermediate lower surface of IIB, ferromagnetic orbits IA,
IB is attached, and below the orbits IA and IB, a magnet unit 2^ is placed opposite the orbits IA and IB.
, 2B, 2A,, 2B, and a transport vehicle 3 carrying devices for driving and controlling them are supported by magnetic levitation.
Furthermore, the main conveyance path lO includes left and right main conveyance path frames II.
Stators 7 of a single-sided linear induction motor are attached at appropriate intervals between A and IIB with metal fittings 6, and the transport vehicle 3 is
The thrust generated between the stator 7 and the secondary conductor plate 8 mounted on the transport vehicle 3 so as to face the stator 7 causes it to float inside the transport path 0. In addition, the main transport path frame IIA.
The IIB is fixed at a predetermined distance with a support metal fitting 9, and the support metal fitting 9 is fixed with a hanging metal fitting 12 whose upper end is fixedly supported on the building side (not shown). Figure 2 shows the support fittings 9 and the main transport path frames 11^, 11.
FIG. 3 is a front view of FIG. 2, and the support fitting 9 is provided with elongated parts 16 on the left and right sides.
The main conveyance path frames IIA, IIB are fixed to the support fittings 9 by having the engaging portions l3 sandwiched between the press plate 14 and the bolts l5 and tightened. The metal fittings 6 for fixing the stator 7 of the single-sided linear induction motor mentioned above to the main transport path frames IIA and 11B have a similar configuration. In the floating conveyance device configured in this way, the distance between the main conveyance path frames IIA and 118 can be arbitrarily changed by the length l6 of the support fitting 9 according to the dimension between the magnet units 2A and 2B of the conveyance vehicle 3. Can be done. In addition, transport vehicle 3
Depending on the floating state of the transport vehicle, magnet units 2A and 2B
When adjusting the interval of orbit 1^, IB with respect to the interval of , it can be changed arbitrarily. Furthermore, even when installing the conveyance path on a support part such as a building, the error between the support position and the installation position of the conveyance path can be adjusted using only the support fittings 9.

In the above embodiment, the support fittings 9 were explained as being suspended by the hanging fittings 9, but the support fittings 9 may also be used, for example, if they are protruded horizontally like a cantilever from the wall surface.
The same method can be applied even when the main transport frame IIA, I
The adjustment of the interval between the IBs was performed using the strip-shaped support fitting 9 and the elongated hole 16, but the elongated hole 16 may be replaced with a row of multiple round holes to adjust the interval in stages. Use it as a rod, insert an annular tube into the nine pieces, and use this to complete the main transport frame IIA.
etc. may be supported.

〔Effect of the invention〕

As described above, according to the present invention, a pair of main transport frames are supported by a plurality of supporting metal fittings, a track is attached to each of the main transport frames, and a floating transport vehicle is floated opposite the track. In the device, the main transport frame support part of the support fitting is provided with an engagement adjustment part that can adjust the support interval of the main transport frame, so it can easily respond to transport vehicles with different external shapes and changes in floating state. It is possible to obtain a floating conveyance device that can perform

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an embodiment of the floating conveyance device of the present invention, Figure 2 is a partial plan view showing the main parts of Figure 1, Figure 3 is a front view of Figure 2, and Figure 4. 5 is an explanatory diagram showing the structure of this type of floating conveyance device, and FIG. 5 is an explanatory diagram showing the operation of FIG. 4. IA, IB... Track 3... Levitating carrier 9... Support metal fittings 10... Main transfer path 11A, IIB... Main transfer frame 16...
Long Ana (8733) Agent Patent Attorney Yoshiaki Inomata (and 1 other person) 1 Figure 13 2 Figure 3 Figure C 4 Figure 5

Claims (1)

[Claims] In a floating transfer device in which a pair of main transfer frames are supported by a plurality of support fittings, a track is attached to each of the main transfer frames, and a floating transfer vehicle is floated opposite to the track, 1. A floating conveyance device, characterized in that a main conveyance frame support section is provided with an engagement adjustment section that adjusts a support interval of the main conveyance frame.