Bidirectional pre-tensioned rail plate long-surface pedestal production chain

Abstract

A bidirectional pre-tensioned track board long surface pedestal production line comprises two symmetrically arranged production zones. Steel models are arranged in the production zones. Horizontal tensioning end beams and longitudinal tensioning end beams are respectively arranged on four edges of every production zone. A horizontal tensioning mechanism is arranged between the adjacent edges of the two production zones. Longitudinal tensioning mechanisms are respectively arranged on one lateral edge or two lateral edges of the two production zones. The horizontal tensioning mechanism comprises a horizontal tensioning jack. The two ends of the horizontal tensioning jack are respectively provided with horizontal tensioning small end beams. The horizontal tensioning small end beams on the two ends are respectively connected with the end beams on the adjacent edge of the other production zone in a transmitting way. The longitudinal tensioning mechanism comprises a longitudinal tensioning jack. A longitudinal tensioning small end beam is arranged on the external end of the longitudinal tensioning jack. The longitudinal tensioning small end beam is connected with the end beam on the adjacent edge of the production zone in transmitting way. The bidirectional pre-tensioned track board long surface pedestal production line greatly lowers the production cost and improves the production efficiency.

Description

technical field [0001] The present invention relates to a production line process layout of a long-face pedestal of a pre-tensioned prestressed concrete track slab (hereinafter referred to as a pre-tensioned track slab), in particular to a production line process layout of a long-face pedestal used in the production process of a pre-tensioned track slab . Background technique [0002] With the continuous development of science and technology, the slag track is gradually eliminated due to its various disadvantages, and the slag-free track is gradually used in the construction of high-speed railways due to its high reliability, high ride comfort, high durability and almost no track maintenance. It was adopted, but the key technology of the slag-free track lies in the production process of the two-way pretensioned prestressed concrete track slab. [0003] At present, the mature production process used in the mass production of bidirectional pretensioned prestressed concrete tr...

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Problems solved by technology

[0003] At present, the mature production process for the mass production of bidirectional pretensioned prestressed concrete track slabs includes the assembly line production process. The patent application of "production process of the method" discloses a two-way pre-tensioned prestressed concrete track slab applied to the slag-free high-speed railway and its assembly-line production process. This technology is suitable for the assembly line production of the track slab, and the produced track The plate has the characteristics of excellent electrical performance and low manufacturing cost; in this technology, the tension of the prestressed steel wires on the upper part of the steel model and the tension generated by the prestressed steel hinges on the lower part of the steel model are achieved through the bottom frame and formwork of the steel model. The balance of force is used to ensure the flatness of the product, but in the long-term production practice, it is found that the prestress in the lower part of the steel model is difficult to be effectively monitored and adjusted, so the flatness of the product is difficult to guarantee

[0004] The use of long-line pedestal production can solve this problem well, but since the production of pre-tensioned track slabs requires all the tensioning and untensioning operations around the steel model, a large number of tensioning systems are required, which results in a sharp increase in the cost of the production line Moreover, the production efficiency is low. Therefore, the urgent problem to be solved in the production of pre-tensioned track slabs using traditional long-line pedestals is: how not to damage the pre-tensioned track slabs when relaxing the stress when the prestressed steel wires in two directions are restrained by each other, and how to improve production. Efficiency and reduced number of tensioning systems

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