JPS6115558A - Secondary conductor of linear motor - Google Patents

Abstract

PURPOSE:To reduce a facility cost by mixing a unit made of a composite material of an iron material and a non-ferrous material and a unit made of the iron material in the secondary conductor laid on rails of a linear motor car. CONSTITUTION:A unit 1 made of a composite material of an aluminum plate 3 of a bonding material and a normal steel plate 4 of a base material is laid in a length L. The unit 2 made of a normal steel plate 2 is laid in a length l. The secondary conductor made of the units 1, 2 is laid between rails 7a and 7b. A linear motor car is accelerated in the zone of the unit 1, and normally idled in the zone of the unit 2, but since the secondary conductor is provided in the zone of the unit 2, it can be accelerated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a secondary conductor of a linear motor of an on-board linear motor car, and particularly relates to the mixed use of secondary conductors made of different materials.

[Background of the invention]

It is known that the reaction plate, which is the secondary conductor of a linear motor, is generally made of a composite material made of a ferrous metal base material and a non-ferrous metal material such as copper or aluminum, which is a good conductor, and is continuously laid throughout the entire running section. (Jikko Sho 47-238
43, JP-A-48-68453).

However, laying expensive composite materials over the entire running section increases equipment costs for railways with long running distances.
It was only used in limited areas with a running distance of several hundred meters.

[Purpose of the invention]

The present invention is a reaction plate made of a composite material that is a good conductor and a reaction plate made only of low-cost ferrous metal.The secondary reaction plate is effectively combined and laid according to the traveling section of the linear motor car to reduce equipment costs. Provides a conductor.

[Summary of the invention]

The present invention was developed by focusing on the fact that when a linear motor car runs, balance running after acceleration is performed by repeating coasting and coasting.There is also a method of thinning out the coasting section without the need for a reaction plate. , the change in current becomes large at the missing part of the reaction plate. If the train stopped midway, it would be unable to run, so the above objective was achieved by suppressing changes in current, and by combining a reaction plate made of ferrous metal that can be moved even if the train stopped midway, and a composite material with a good conductor.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

The reaction plate is made by continuously combining a unitized reaction plate 1 with a length L made of composite material and a reaction plate 2 made of ordinary steel at an appropriate interval l,
As shown in FIG. 4, the running rails 7a, 71:+ of the linear motor car 5 are laid facing the central linear motor 6.

Composite reaction plate 11d: As shown in FIG. 2, an aluminum plate 3 as a bonding material and an ordinary steel plate 4 as a base material
It is made by joining. As shown in FIG. 3, the reaction plate V-) 2 is a single plate made of ordinary steel, and although its conductivity is lower than that of the reaction plate 1, it is a conductor.

When the linear motor car runs on this reaction plate, it accelerates from vl to v2 on the reaction plate 1, as shown by speed line 8, when it repeats coasting and coasting, and during the coasting section it accelerates from vl to v2. decreases from v2 to Vl and is accelerated by the next reaction plate 1. Also, the speed line 9
Even when the speed decreases from V3 to v4 and accelerates in the middle of the coasting section t, the linear motor car 5 can accelerate from the speed v4 to v5, and the linear motor car 5 can travel even if it stops midway.

Electrically, if the reaction plate 2 is missing, the induced current of the linear motor is cut off at the missing part, so an overcurrent flows to the linear motor on the next side of the vehicle. Therefore, it is necessary to control this overcurrent, but with the reaction plate 2 of this embodiment, there is no large current fluctuation and no special control is required.

Therefore, the reaction plate 1 should be laid long in places that require a large propulsion force, such as near a stop or on a slope, and the reaction plate 2 should be lengthened in balance running sections on flat areas, depending on the running section. The reaction plates are installed with different combinations.

According to this example, by effectively combining composite materials and ordinary steel materials, the amount of expensive composite materials used is drastically reduced, and in addition to reducing equipment costs, special electrical control is also required. There is an effect that does not.

〔Effect of the invention〕

According to the present invention, the equipment cost for the reaction plate can be significantly reduced. In addition, large fluctuations in current generated at the missing portion of the reaction plate can be suppressed, eliminating the need for special electrical control, resulting in high reliability (and reduced equipment costs).

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing a combination of reaction plates according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line B-B in Fig. 1. A cross-sectional view along
FIG. 4 is a plan view showing the track on which the linear motor car travels. 1.2... Action plate, 3... Joining material, 4... Base material, 5... Linear motor car, 6...
Linear mode (-)

Claims (1)

[Claims] 1. In the secondary conductor of a linear motor installed on the track on which an on-board primary type linear motor car runs, a unitized secondary conductor made of a composite material consisting of ferrous metal material and non-ferrous metal material, and a ferrous metal material are used. 1. A secondary conductor for a linear motor, characterized in that a unitized secondary conductor consisting of the following is used in an appropriate length according to the running section of the linear motor car, and is continuously constructed and laid.