JPH04105543A - Manufacture of primary side of linear induction motor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing the primary side of a ground secondary type linear induction motor.

[Conventional technology]

The negative side (excitation side) of the linear induction motor (hereinafter referred to as LIM) is as shown in Figs. 4 and 5.
It is formed by winding U-, V-, and W-phase coils 20 around a laminated core 10, but the laminated core 10 is tightened by applying a frame 30 to the yoke portion 11 of the laminated core 10 from both sides. This is done by tightening with a tightening bolt 40, and this tightening is done by using the frame 30 to attach it to a traveling carriage (not shown).

[Problem to be solved by the invention] In the ground secondary type LIM, the -next side is mounted on a traveling bogie, so from the viewpoint of power consumption, the -next side should be as lightweight as possible. Although it is desirable, the above tightening is not suitable for the frame 30.
Conventionally, since an iron frame is used and a plurality of tightening bolts 40 are used, there has been a problem in that the proportion of the total weight of these bolts on the primary side is not small.

The present invention was made to solve this problem, and the present invention is a primary linear induction motor that can reduce the weight of the members used for tightening the laminated iron core and simplify the work compared to the past. The purpose is to provide a side production method.

[Means to solve the problem]

In order to achieve the above object, the present invention forms a large number of fitting holes arranged in the longitudinal direction at predetermined intervals in a box-shaped molded frame made of a non-metallic material, and the frame is inserted through the fitting holes. The magnetic pole part of the laminated iron core is made to protrude and tightly fitted onto the yoke part of the laminated iron core to tighten the laminated iron core, and a primary coil is wound around the magnetic pole part protruding from the fitting hole with an insulator interposed therebetween. The configuration is such that the

In claim 2, the molding frame is made of an insulating material and has an insulating cylindrical portion integrally erected surrounding the fitting hole, and the magnetic pole portion of the laminated iron core is fitted into each of the insulating cylindrical portions. And so.

[Effect]

In the present invention, the yoke part or the whole of the laminated core is housed in a molded frame made of a non-metallic material such as carbon composite or glass fiber, and the laminated core is tightened without using bolts or the like. Compared to the conventional iron fastening method using a frame and bolts, the laminated iron core can be fastened with lighter members and with fewer man-hours.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, 1 is a molded frame body,
It consists of a box-shaped frame having a cavity 4 surrounded by a side wall 2 and an upper wall 3, and the upper wall 3 has a large number of fitting holes 5 arranged at predetermined intervals in the longitudinal direction. Both ends in the longitudinal direction of this molded frame 1 serve as attachment parts 6 to a traveling truck (not shown). The molding frame 1 is molded using a non-metallic lightweight material, such as capon cobosite or glass fiber.

As shown in FIG. 2, the forming frame 1 of this embodiment has a cavity 4 that tightly covers the yoke portion 11 of the laminated core 10.
The laminated iron core 10 is tightened and fixed by fitting the fitting hole 5 into the corresponding magnetic pole part 12 and tightly fitting it onto the yoke part 11. The coil 20 is connected to the magnetic pole portion 1 with an insulator 7 interposed therebetween.
Wrap it around 2.

In this embodiment, since the laminated iron core 10 is tightened using the lightweight molded frame 1, the stator can be made lighter compared to the case where the frame 40 is used for tightening the iron, and in particular, the stator can be made smaller and smaller. It has been implemented in a ground secondary type induction motor mounted on a running trolley, and has a great effect, and since the laminated iron core IO is not tightened using bolts, the number of man-hours can be reduced.

FIG. 3 shows the main part of another embodiment of the present invention, in which the molded frame 1 is made of an insulating material such as glass fiber, and is erected integrally surrounding the fitting hole 5. It has an insulating cylindrical portion 8.

In this embodiment, the magnetic pole part 12 of the laminated iron core 10 shown in FIG. 2 is fitted into each insulating cylinder part 8, and a coil is wound around the insulating cylinder part 8. Therefore, there is no need to use the insulator 7 as in the embodiments described above, which has the advantage of reducing the number of man-hours required for manufacturing the negative side.

〔Effect of the invention〕

As explained above, the present invention tightens the laminated iron core using a molded frame body that houses the yoke part or the entire laminated iron core, and since this molded frame body is made of a lightweight non-metallic member, it is possible to tighten the laminated iron core using The attachment is a lighter material than when using a frame,
The laminated iron core can be tightened, and the weight of the entire negative side can be reduced accordingly, and the number of manufacturing knees can be reduced.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a molding frame according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the above embodiment, and FIG. 3 is a partially sectional perspective view of a molding frame according to another embodiment of the present invention. , FIG. 4, and FIG. 5 are a plan view and a cross-sectional view, respectively, showing the structure of a conventional iron core tightening system. 1-molding frame body, 2--side wall, 3-upper wall, 4--void space, 5-fitting hole, 6-attachment part, 7-insulator, 8-insulating cylinder part, IO-... Laminated iron core, 11-・Yoke part, 12-・-
Magnetic pole part.

Claims (2)

[Claims] (1) A large number of fitting holes arranged in the longitudinal direction at predetermined intervals are formed in a box-shaped molded frame made of a non-metallic material, and the magnetic pole part of the laminated iron core is protruded from the fitting hole. and tighten the laminated core by tightly fitting it onto the yoke part of the laminated core,
A method for manufacturing a primary side of a linear induction motor, characterized in that a primary coil is wound around the magnetic pole portion protruding from the fitting hole with an insulator interposed therebetween. (2) The molded frame is made of an insulating material and has an insulating cylindrical part that stands integrally surrounding the fitting hole, and the magnetic pole part of the laminated iron core is fitted into each insulating cylindrical part. A method for manufacturing a primary side of a linear induction motor according to claim 1.