JPH055002B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a track structure for a linear motor electric train applied to a combined track.

(Prior Technology) Unlike conventional trains, which are driven by an on-board rotary motor that reduces speed by gears, linear motor trains use induction field electric coils installed on the underside of bogies supported by iron wheels and rails. This electric train runs directly by generating thrust in the coil through the magnetic force between it and a reaction plate provided on the rail tube. Such a linear motor train has the advantage of being able to be constructed with a low floor, small size, and light weight, and is therefore suitable for running as a small subway vehicle. The track structure in this case is considered to be one in which a reaction plate is grounded between the rails placed on sleepers, as in conventional railways.

(Problem to be solved by the invention) However, in order to make effective use of the road surface due to the increase in traffic volume, recently it has become desirable to allow linear motor trains to run on normal roads, Track structures that take coexistence with roads into consideration are beginning to be considered. The conditions for realizing such a shared structure are as follows: while being able to withstand the running load of general rolling stock, the distance between the reaction plate on the track side and the coil on the car body side is 15mm, which is required when operating a linear motor train. The following minute gaps must be maintained at all times, and therefore,
High precision is required for the running path, or track structure, in terms of structure, manufacturing, and installation, but the conventional sleeper type track cannot meet such requirements, and so far, , such a shared orbital structure has not been proposed either.

(Means for Solving the Problems) The present invention provides a precast concrete pavement slab (hereinafter referred to as a PC pavement slab) 4 laid on a road bed surface,
The PC paving slab is equipped with rails 7 attached to both end faces along the end faces, and reaction plates 12 attached to the upper surface of the PC paving slab along the rails, and the rails are used for the wheels W of the linear motor train.
The reaction plate corresponds to the coil C provided on the underside of the linear motor train.

(Function) The mounting position of the rail 7 and the reaction plate, which determines the gap distance between the coil C and the reaction plate 12 necessary for the running of the linear motor train, is always kept constant by the standardized PC pavement plate 4. and this void will be automatically set at the same time as the PC pavement slab is installed.

(Example) A cushion part 2 of a predetermined width is formed on the top surface of the concrete trackbed 1 cast on the foundation split stones in Figs. 1 and 2 in the longitudinal direction (depth direction in Fig. 2) with sand spread. Rubber pads 3, which are flush with the cushion part, are installed on both sides of the cushion part. A PC paving slab 4 is laid on the cushion section 2. The PC pavement slab 4 is fixed on the roadbed 1 by anchor bars or by projections protruding from the lower surface to prevent the PC pavement slab from sliding.
And, inside the PC pavement version 4, there is a 1.5m in the longitudinal direction.
A connecting rod 5 is provided through each of the connecting rods in the width direction, and threaded portions 5a provided at both ends of the connecting rod 5 protrude horizontally from the end surfaces of both sides of the PC paving slab 4. Piano wires 6 for reinforcement are arranged in the longitudinal direction within the PC paving slab 4.

As shown in Fig. 1, a pair of grooved rails 7 for supporting and guiding the wheels of a linear motor train are located along both end faces of the PC paving slab 4, and the threaded portions of the connecting rods 5a penetrates the web of each rail, and by tightening nuts 8 to the threaded portions, the rails are attached and fixed to the side end surface of the PC pavement slab. The base 7a of the rail 7 has its bottom surface flush with the lower surface of the PC paving slab 4, and is located on the rubber pad 3. The rail 7 is also supported by asphalt 9 paving the upper surface of the track bed 1 on the outside thereof.

A reaction plate mounting groove 4a having a predetermined width and depth is provided in the center of the upper surface of the PC paving plate 4 in the longitudinal direction. The bottom surface 4b of the groove 4a is formed in a V-shape, and is a drainage channel 4 extending from the valley at the center of the bottom surface to the road bed 1.
c is provided in the vertical direction. Threaded portions at the upper ends of two mounting bolts 10, 10 standing up from each connecting rod 5 protrude from both sides of the bottom surface of the groove 4a. A mounting frame 11 made of an iron plate is placed horizontally in the groove 4a, and holes 11 provided on both sides of the frame are placed horizontally.
The threaded portion of the mounting bolt 10 is inserted through a, and the frame is fixed with a nut. A reaction plate 12 made of a laminated aluminum plate 12a and an iron plate 12b is mounted on the mounting frame 11. PC
The level difference between the upper surface of the pavement plate 4 and the upper surface of the reaction plate 12 is set to 15 mm. Corresponding to the reaction plate 12 is a coil C attached to the lower surface of the linear motor train E shown by the chain line in FIG. W
are the wheels of train E running on the groove of rail 7.

The construction method for the track structure is as follows. First, concrete is poured onto the foundation stones to form a concrete track bed 1, sand is first spread on the track bed to form the cushion part 2, rubber pads 3 are laid on both sides of the cushion part, and then rubber pads 3 are laid on both sides of the cushion part.
Install PC pavement version 4. After that, the rails 7, 7 are placed along both end surfaces of the PC paving slab 4, and the threaded portions 5a of the connecting rods 5 protruding from the side end surfaces are inserted into the holes of the rails.
The rail is fixed to the PC paving slab 4 by attaching and tightening nuts 8 to the threaded portions. Then, the outside of the rail 7 is paved with asphalt 9. Thereafter, the mounting frame 11 to which the reaction plate 12 is fixed is placed in the groove 4a and insulated and fixed to the threaded portion of the mounting bolt 10, thereby completing the track construction work.

According to such a track structure, the relative mounting position of the rail 7 and the reaction plate 12 can be accurately regulated by the PC pavement plate 4 which has been molded in advance to a predetermined shape and dimensions, and therefore, the linear To reliably and easily secure a gap between a coil and a reaction plate necessary for running a motor train. Moreover, the rail 7 and the reaction plate 1
Due to the strength of the PC pavement plate 4 to which 2 is attached, the entire track structure becomes strong enough to withstand the driving load of ordinary vehicles.

If the cross-sectional shape of the side edge of the PC paving slab 4 is formed to match the inner surface shape of the rail 7, the rail and the side edge of the PC paving slab will come into close contact with each other, and the position of the rail will be stabilized. do. In addition, as long as the PC pavement slab 4 is held on the track bed 1 by the position holding means, the rail 7
Since the base 7a is integrally attached to the PC pavement slab 4, it is not necessarily necessary to fasten the base 7a to the track bed 1 with bolts, etc., but considering that lateral pressure will be applied to the curved section, it is shown in Fig. 3. As shown, it is desirable to elastically fasten the outer part of the base 7a with a bolt 13 and a spring plate 14. In addition, if the PC pavement slab is not held in position on the track bed 1 by a position holding means, it can be held with asphalt 9, but if the outside of the base 7a of the rail 7 is fastened with bolts,
The PC pavement slab 4 can be held securely, and its position can be maintained at the same time as it is fastened, improving workability.

(Effects of the Invention) According to the present invention, the structure in which the rails and reaction plates are attached to the PC pavement plate ensures that the required minute gap between the coil on the linear motor train side and the reaction plate on the track side is maintained. Since it is maintained with high precision and the track structure itself is robust, it satisfies the various conditions required for running routes for linear motor trains and can also be installed on roads for general traffic. , it becomes possible to realize efficient use of road transportation by sharing vehicles and linear motor trains on general roads. In particular, such a shared transportation system is very convenient in cities that do not have the artificial scale to build a subway.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the track structure, Figure 2 is a perspective view showing the concrete track bed, PC pavement slab, and reaction plate separated, and Figure 3 is a sectional view of a curved section. 1... Road bed, 4... PC pavement version, 7... Rail,
12... Reaction plate, C... Coil,
E...Linear motor train.

Claims (1)

[Scope of Claims] 1. A PC pavement slab laid on a roadbed surface; Rails attached to both end faces of the PC pavement slab along the end faces to support and guide the wheels of a linear motor train; A track structure for a linear motor train, comprising a reaction plate attached to the upper surface along the rail and corresponding to a coil provided on the lower surface of the train.