Pre-tensioning method prestressed concrete track board production line maintaining system and application thereof

Abstract

The invention belongs to production of track boards, and particularly relates to a pre-tensioning method prestressed concrete track board production line maintaining system and application thereof. The maintaining system comprises a steam-maintaining chamber which is arranged between working tracks matched with a mold and provided with an automatic door, a nozzle which is arranged in the steam-maintaining chamber and connected with a constant temperature water supply device, a temperature detection device and a temperature control device, wherein the temperature detection device and the temperature control device are connected with a center control device; a walking track and a transfer pulling device used for pulling a mold are arranged on the ground in the steam-maintaining chamber; thewalking track is connected with the working tracks outside the steam-maintaining chamber; the temperature and humidity detection device comprises a core temperature and humidity sensor, a surface layer temperature and humidity sensor and an environment temperature and humidity sensor; and the temperature control device comprises a steam supply device and an air cooling device. The technical problems that in the prior art, maintaining measures are simplex, and existing standard requirements cannot be met are effectively solved, and the maintaining system has the advantages that the existing standard requirements are well met, high-efficiency assembly line production can be achieved, and automatic control is achieved easily.

Description

technical field [0001] The invention belongs to the production of track slabs, in particular to a maintenance system for a pretensioned prestressed concrete track slab production line and its application. Background technique [0002] During the production process of track slabs used in the construction of ballastless tracks for high-speed railways, steam curing and water spraying maintenance operations are required after concrete pouring. The main purpose of steam curing is to quickly increase the strength of the track slab, shorten the production cycle, improve product quality and save production costs. At the same time, it is one of the key factors in the quality of the entire track slab construction technology to prevent the problems of dry shrinkage, cracks, and warping of the track slab during the steam curing process when the temperature and humidity are too high. [0003] CRTS track slabs are divided into post-tensioned type I, II, and III and type III pretensioned ...

AI Technical Summary

Problems solved by technology

There are certain defects in the above-mentioned prior art: one is that the whole steam curing process uses cumbersome equipment, there are many single stations, a large number of labor is used, and the labor intensity is high; the other is that the mode steam curing area produced by fixed pedestal or fixed single mode is adopted It occupies a large area, which leads to a large increase in pipeline layout and workshop area, which increases the construction cost, and the subsequent equipment is difficult to reuse, and the land is not easy to re-cultivate, resulting in great waste; third, the process of steam curing is relatively cumbersome , Many links are manually operated, the degree of human intervention is high, and the degree of automation is not high; Fourth, the spraying and water replenishment maintenance cannot be carried out in time during the steam curing process. It also leads to drastic changes in temperature and humidity inside the tarpaulin; although it has been greatly improved in the construction of the pedestal method, the hose is still manually placed on the surface of the track slab each time, and then manually removed after completion, the degree of automation is not high

The main problems of the above-mentioned prior art are that first, the application environment is limited, and it can only be used for pedestal production methods, which cannot be used universally and meet the requirements of existing specifications; second, there are defects in the pipeline layout, because the steam curing system is fixed at the bottom of the mold Pipeline, the steam is ejected upwards, because the distance between the mold and the pipe is relatively close when the mold is installed, the local temperature and humidity of the bottom plate of the mold are too high during the actual steam curing process, which is difficult to meet the requirements for the maintenance temperature and humidity in the specification

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