Preparation method of close-fitting type elastic curing unit

Abstract

The invention provides a preparation method of a close-fitting type elastic curing unit. The preparation method comprises the following steps of S1, overturning a sleeper by 180 degrees, placing the sleeper in a mold of a preparation device, and reversely placing the upper surface of the sleeper on the upper surface of a base; S2, placing macadam at a discharge port in the upper end of the mold, and adjusting the compactness of the macadam; S3, injecting polyurethane into the compacted macadam; S4, pressing a first loading flat plate at the bottom end of a first hydraulic rod piece and a second loading flat plate at the bottom end of a second hydraulic rod piece on the upper surface of the macadam; S5, pressurizing the macadam through the hydraulic rod pieces, compacting the macadam and the polyurethane, and forming a first ballast bed block and a second ballast bed block; S6, demolding the sleeper forming the close-fitting type elastic curing unit and the first track bed block and thesecond track bed block formed by the pressurized polyurethane and the macadam; and S7, reversely rotating for 180 degrees, and positively placing the close-fitting type elastic curing unit. Accordingto the preparation method, the standard mold is combined with pressure equipment, so that the polyurethane is added after ballast beds are compacted, and the polyurethane curing ballast beds are morestable.

Description

technical field [0001] The invention relates to the field of tracks, in particular to a method for preparing a solidified track system. Background technique [0002] The traditional ballast track structure has a series of advantages such as strong maintainability and good elasticity. However, due to the characteristics of the granular particles that make up the ballast of the ballast bed, there are also problems such as poor track geometric state maintenance ability and difficult control of ballast particle density. question. [0003] In addition, the compactness of bulk ballast particles in the ballasted track structure is the key factor determining the mechanical properties of the ballast bed and the cumulative deformation in the later period. For example, the bulk ballast bed can be made to a reasonable density by means of prefabrication in the factory, and then polyurethane is used for pouring Strengthening the structure can improve the mechanical properties of the ball...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that the compactness of ballast ballast is difficult to control and the lower ballast bed and the upper sleeper need to be combined as a whole, the present invention provides a method for preparing a close-fitting elastic curing unit, which reduces the preparation time by placing the sleeper upside down The impact of time on compactness solves the above problems

Images