JPH0686409A - Track unit of magnetic levitation carriage equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To make a track unit for a magnetic levitation carrier simpler, more economical, and less time-consuming and rational. [Structure] The orbital unit 1 comprises a support frame 2 having an open lower surface and hollow frame bodies 2a on both sides.
The ferromagnetic rail 3 is fixed to the lower surface of the. Support frame 2
The opening 5 of the motor housing 6 is provided with a collar 5,
The linear motors 8 installed at predetermined intervals are attached to this. The ferromagnetic rails 3 are connected by a rail adapter 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track unit for forming a running track of a magnetic levitation transport device.

[0002]

2. Description of the Related Art A magnetic levitation transfer device is a device that is levitated by an electromagnet or the like and causes a carrier vehicle to travel in a non-contact manner on a traveling track fixed on the ground side by thrust of a linear motor.
IC has various advantages such as low noise, low vibration, and no dust generation.
It is used for transporting articles such as chips that do not like dust or vibration.

A travel track in such a magnetic levitation transport apparatus is conventionally formed by connecting a plurality of sets of track units 31 each having a fixed length dimension as shown in FIG. 7, and each unit has a hollow section. A box-shaped support frame 32 whose inside is divided into three parts in the width direction, and a pair of ferromagnetic rails 33, 3 attached to the left and right lower surfaces with bolts.
3 and 3. 36 is a motor housing portion, 37 is a cable housing portion, 38 is a linear motor, and 39 is an electric cable.

The transport vehicle (not shown) is levitated by the attraction force generated between the levitation magnet provided facing the magnetic rail, and the thrust of a linear motor 38 arranged along the length direction of the track. Run by.

[0005]

By the way, in the above-mentioned conventional running track unit, as shown in FIG. 7, the section is a box-shaped hollow section which is closed except for the positions of the linear motors 38 provided at predetermined intervals. Has been formed.

Further, the bottom surface of the linear motor may be formed so as to protrude from the support frame, but in order to increase the thrust by the linear motor, the linear motor is provided between the reaction plate (secondary conductor) on the side of the carrier and the linear motor. Since it is necessary to make the distance as small as possible, if the linear motor is made to protrude from the support frame, the side of the transport vehicle is also lowered by that amount, which is not preferable in terms of design arrangement. Therefore, generally, the lower surfaces of the left and right ferromagnetic rails on the lower surface of the support frame are used as reference planes, and the lower surface of the linear motor is designed to be located in the same plane as this reference plane.

Therefore, there is a problem in that the linear motor installation portion needs to be machined to cut out the support frame bottom plate, and the linear motor provided at the notched position cannot freely change the installation position.

Further, when the above-mentioned conventional track units are suspended and connected to the ceiling, it is necessary to accurately adjust the level of the lower surface of the adjacent ferromagnetic rails and the gap between the rails. Adjustment work requires a considerable amount of time. Further, the strength in the height direction of the connecting portion is obtained only by the connection by the ferromagnetic rail, so there is a problem that the strength is insufficient.

The present invention has been made in view of the above-mentioned various problems, and most of the lower surface is opened to facilitate the mounting work and position and level adjustment of a linear motor, and a magnetic rail using a rail adapter. An object of the present invention is to provide an economical rail unit that improves the adhesion of the connection portion of the above and that does not require mounting.

[0010]

In order to solve the above-mentioned problems, the present invention has a box-shaped cross-sectional shape having hollow frame bodies on both sides, and the lower surface is formed to have a fixed length dimension which is open in the length direction. Support frame and a plate-shaped ferromagnetic rail fixed to the lower surface of the hollow frame, and a collar for mounting the linear motor is provided inside the open part of the support frame.The ferromagnetic rail is longer than the support frame. Is set to be short, and a rail unit of a magnetic levitation transport device is constructed in which adjacent support frames can be connected to each other by using a rail adapter of the same width, the same thickness, and the same material as the ferromagnetic rail.

In this case, the rail adapter has a notch at both ends thereof in the center in the rail width direction, the notch corresponds to a gap sensor for detecting a floating gap of a carrier, and both sides thereof have magnetic levitation magnet iron cores. It is preferable to form it at a position corresponding to.

[0012]

In the track unit according to the present invention having the above-mentioned structure, the carrier vehicle is levitated by the ferromagnetic rails and transported in the traveling direction by the linear motor as in the conventional rail.

However, when the linear motor is mounted on the track rail, the rail lower surface is opened in the longitudinal direction, so that no special notch work for mounting the linear motor is required, and the rail motor is mounted before and after the predetermined position. It is possible to attach it at any position. Further, it becomes easy to align the lower surface of the linear motor with the reference surface. Since the ferromagnetic rails are connected and adjusted with a short rail adapter, the adhesion of the rail joint is improved.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an orbital unit of the embodiment. The track unit 1 is composed of a support frame 2 formed to have a fixed length and a pair of ferromagnetic rails 3 and 3 fixed to a lower surface of a hollow frame body 2a of the support frame 2 with bolts 4. There is.

The support frame 2 is box-shaped and has hollow frame bodies 2a on both sides, and the lower surface is open between the hollow frame bodies. Therefore, the inside is divided into three parts in the width direction.
A wide central portion of the partition portion serves as a motor housing portion 6 in which the linear motor 8 is incorporated, and both side portions serve as a cable housing portion 7 through which a plurality of electric cables 9 are inserted in the longitudinal direction.

The linear motor 8 is supported by the collar 5 in the motor housing portion 6 at predetermined intervals in the longitudinal direction of the support frame, and the lower end of the linear motor 8 is supported by the support frame 2 in this supported state. It coincides with the reference plane X.

The lower surface of the motor housing portion 6 is open along the length direction of the rail as shown in the figure, so that the linear motor 8 is optional along the length direction of the support frame 2. Can be installed in the position. The top plate of the linear motor 8 is placed on the brim 5 and fixed at a predetermined position with bolts or the like.

On the other hand, the cable housing portion 7 is adapted to house an electric cable 9 which is connected to a linear motor 8 and a position detector of a transport vehicle arranged along a traveling track, and the supporting frame 2 Connectors 12, 12 for connecting to the electric cables 9 housed inside are provided in the vicinity of the end portions of both side surfaces of the. The connectors 12 and 12 are connected to the connectors of the adjacent support frames with the cords 13 in a state where the support frames 2 are connected in the length direction, so that the electric cables 9 housed in the respective support frames are continuously connected. To do.

As shown in FIG. 1, the ferromagnetic rail 3 is set to be slightly shorter than the fixed length L of the support frame 2, and the rail adapter is provided between the adjacent support frames 2 and 2 '. Connected to each other by 10. This rail adapter 1
As shown in FIG. 4, 0 has notches 10a at both ends thereof at the center in the width direction.

The notch 10a is provided so as to correspond to the mounting position of the passing portion B through which the gap sensor for detecting the floating gap of the transport vehicle passes, and the lateral protruding portions 10b respectively pass through the floating magnet iron core. It is provided corresponding to the position of the passage portion A.

With such a shape, the length of the rail adapter 10 having a short dimension is adjusted according to the actual gap between the ferromagnetic rails 3 to 3 so that the protrusion 10b and the ferromagnetic rail 3 are joined together. The adhesion of the parts can be improved. Further, the magnetic resistance of the joint portion can be reduced, so that a stable floating state can be maintained.

Further, since the gap by the notch 10a corresponding to the gap sensor can be easily set to a predetermined amount, a stable output signal of the gap sensor can be obtained, so that a stable magnetic levitation state can be maintained.

As shown in FIGS. 1 and 5, the side plate in the height direction of the support frame 2 is provided with a reinforcing member 11 for connecting both ends thereof. By providing the reinforcing member 11, it is possible to eliminate the lateral shift between the adjacent track units. Further, as shown in FIG. 5A, for example, when the connecting portions of the support frames 2 and 2 ′ are suspended by the support member 14,
When the two support frames 2 and 2'are connected by the reinforcing material 11,
It is also possible to suppress vertical swinging of the support frame 2 ′ due to the load.

FIG. 6 is a sectional view showing a state in which a carrier vehicle is attached to the track unit having the above structure. 20 is a transport vehicle, 21 is a base, 22 is a levitation magnet, 23 is a reaction plate, 24 is a guide roller, and 25 is a support member.
Other detailed description is omitted.

[0025]

As described above in detail, in the track unit according to the present invention, the ferromagnetic rail on the lower surface of the hollow portion of the support frame having the open lower surface and having the hollow portions on both sides is fixed, and the rail length is longer than that of the support frame. Since it is set a little shorter and the connecting part is connected with the rail adapter, the linear motor can be installed in any position in the open support frame, and the lower surface level of adjacent support frames can be easily used as the reference plane. By adjusting the short rail adapters that can be aligned, the connecting portions of the ferromagnetic rails can be easily brought into close contact with each other, so that a rational track unit that is extremely economical and does not require installation work can be obtained.

[Brief description of drawings]

FIG. 1 is an external perspective view of a track unit according to an embodiment.

FIG. 2 is a sectional view of the above.

FIG. 3 is a diagram of the vicinity of the joint portion of the orbital unit as seen from the bottom surface.

FIG. 4 is a perspective view of a rail adapter.

FIG. 5 is a diagram showing a connected state of the track units and a vertical swing state of the units.

FIG. 6 is a cross-sectional view in which a carrier is attached to the track unit.

FIG. 7 is a schematic view of a conventional track unit.

[Explanation of symbols]

 1 Track Unit 2, 2'Support Frame 2a Hollow Frame 3 Ferromagnetic Rail 4 Bolt 5 Collar 6 Motor Housing 7 Cable Housing 8 Linear Motor 9 Electric Cable 10 Rail Adapter 10a Notch 10b Projection 11 Reinforcement X Reference Surface

Claims (2)

[Claims] 1. A support frame having hollow frame bodies on both sides of a box-shaped cross-sectional shape and having a lower surface opened in the longitudinal direction to have a regular length dimension, and fixed to the lower surface of the hollow frame body. It consists of a plate-shaped ferromagnetic rail, and a collar for mounting a linear motor is provided inside the open part of the support frame.The length of the ferromagnetic rail is set shorter than that of the support frame. A track unit for a magnetic levitation transfer device in which adjacent support frames can be connected together using rail adapters of the same thickness and material. 2. The rail adapter is provided with a notch at both ends thereof in a center portion in the rail width direction, the notch corresponds to a gap sensor for detecting a levitation gap of a carrier, and both sides are magnetic levitation magnet iron cores. The track unit of the magnetic levitation transport apparatus according to claim 1, wherein the track unit is formed so as to be located at a corresponding position.