Manufacturing method of railway switch block cast slide plate

Abstract

A manufacturing method of railway switch block cast slide plate comprises the following steps: A) integrally casting a base plate (1), an iron seat (2), a guide iron (3) and a bedplate (4) with casting technique; B) casting for two long grooves (7, 8) right on a limiting convex plate (5) in the internal cavity of the bedplate (4) and under the supporting convex plate (5); C) accurately processing the limiting convex plate (5) and the supporting convex plate (6); D) processing a water drainage hole (9, 10) respectively on the two sides of the bottom plate (1), wherein the water drainage hole (9, 10) are respectively communicated with the two long grooves (7, 8); E) shining metal the working surface of the bedplate (4). The manufacturing method uses the fusible pattern casting technique to manufacture the block cast slide plate, thereby increasing the whole intensity of the slide plate, ensuring the flatness of the bottom plate and the bedplate, providing good working condition for the switch rail and satisfying the requirement of railway switch to the road safety that the speed per hour is more than 200 miles.

Description

technical field [0001] The invention relates to a method for manufacturing a monolithic sliding bed plate for railway turnouts. Background technique [0002] At present, the sliding bed plates for railway turnouts all adopt welded structures, which are assembled and welded by four parts such as the bottom plate, iron seat, guide iron, and platen. Welded sliding bed boards have the following defects: First, thermal deformation occurs during the welding process of sliding bed boards, causing the bottom plate to warp, causing the sliding bed table board and the bottom of the point rail to not be in close contact, resulting in a hanging plate phenomenon, with about 1mm or more between the two. Larger gaps make the bottom of the switch rail suspended in the air, and the working condition is poor, which affects the service life of the switch rail. Secondly, due to the strong vibration during the long-term operation of the train, the welding seam connecting the platform and the bo...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a method for manufacturing a monolithic sliding bed plate for a railway turnout. The investment casting process is used to manufacture the integral casting sliding bed plate, which increases the overall strength of the sliding bed plate and ensures the flatness of the bottom plate and the platen. The point rail provides a good working condition; at the same time, the whole casting sliding bed plate can be well assembled with the shrapnel, making it elastic and durable to buckle the basic rail bottom and supporting point rail, and also reduce the maintenance workload of the line maintenance personnel, and overcome the welding sliding bed plate There are various potential safety hazards, which meet the safety requirements of railway turnouts with a speed of more than 200 kilometers per hour.

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