JPS6123534A - Production of reverse u-shaped curved iron rail - Google Patents

Abstract

PURPOSE:To carry out the plane for a cost reduction, etc. by welding along the gage constraining the outer face of the side wall of a rail and the outer face of the upper wall after the bend work of an iron plate and angle member. CONSTITUTION:The laminating material of a bend worked iron plate 3 in advance is used as an opposite side wall 2 to an iron rail 1. The parallel arranged material of the angle member 5 which is bent in advance is then used as a upper wall 4. The positioning is performed then with making these materials going along with the gage A having the constraining face (a) of the outer face of the side wall of the rail and the constraining face (b) of the outer face of the upper wall in the order of the outside member from the inside member, thereafter, it is made in one body with welding the edge of the contact part. The work of the rail and assembly with weld are made easy and the cost can be reduced by this method. Further the constraint on the aspect of equipments is reduced as well and the production of long-sized rail is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a curved iron rail having an inverted U-shape in end view.

[Prior art and its problems]

Inverted U-shaped iron rails are often used as a component of the ground rails of onboard primary linear motor cars. for example,
A conductive plate that conducts an induced current is bonded to the top surface of this iron rail to form the ground rail of the on-board primary linear motor car.

By the way, a rail having such a shape is difficult to bend due to its high rigidity, so conventionally, when a curved rail is required, a steel material is cut to meet the requirement.

However, there are limits to the cutting of long rails in terms of equipment, and such manufacturing methods also result in extremely high rail costs.

[Means for solving problems]

Therefore, in the present invention, a required curved iron rail is obtained by welding a plurality of members that have been bent in advance.

That is, as shown in FIG. 1, the opposite side wall 2 of the iron rail 1
, a laminated material of pre-bent iron plates 3 is used, while for the upper wall 4 connecting the upper ends of the opposing side walls 2.2, a parallel arrangement of square pieces 5, which are also pre-bent, are used. As shown in Fig. 3, the materials are placed on a gauge A having a restraining surface a on the outer surface of the side wall of the rail and a restraining surface on the outer surface of the upper wall in a predetermined order, for example from the inner member to the outer member of the rail bend. In the manufacturing method of the present invention, the members are aligned in the same direction, and then the edges of the contact portions of each member are welded and integrated while the position of each member is determined on the plane of the gauge.

By using this method, it is easy to bend steel plates and square materials, and to set these parts to gauges, and it is also possible to automate welding.Furthermore, with one gauge, it is possible to make rails with the same curvature. It is possible to manufacture a large number of curved rails and therefore provide an inexpensive curved rail.

In addition, there are fewer restrictions in terms of equipment, so manufacturing long rails 4. It also becomes possible.

〔effect〕

As explained above, in the method of the present invention, the opposite side walls and the top wall of the rail are formed by laminating a plurality of divided members and arranged in parallel and numbered, and then welded and integrated, thereby reducing the manufacturing cost. It will be cheaper and it will also be possible to manufacture long curved rails.

[Brief Description of the Drawings] Fig. 1 is an end view of a curved iron rail obtained by the manufacturing method of the present invention, Fig. 2 is a plan view showing the rail manufacturing process, and Fig. 3 is a conventional FIG. 2 is a perspective view of an inverted U-shaped iron rail.

Claims (1)

[Claims] The opposite side wall of the rail is made of a material made of multiple laminated steel plates, while the upper wall that connects the upper end of the opposite side wall is made of a material made of a plurality of square pieces of wood, and after bending the steel plate and the square pieces, the rail is A method for manufacturing an inverted U-shaped curved iron rail, characterized by attaching the outer surfaces of the side walls and the outer surface of the upper wall to a restraining gauge in a predetermined order, and then welding and integrating the rails.