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

Abstract

The invention belongs to concrete pouring vibrating device and particularly relates to a pre-tensioning method prestressed concrete track board production line pouring vibrating system and applicationthereof. The pouring vibrating system comprises a material distribution mechanism, a jacking mechanism, a vibrating mechanism and a control mechanism. The technical problems that in the prior art, the work efficiency is low, the requirements for automatic control and assembly line production cannot be met are effectively solved, and the pouring vibrating system has the advantages that the existing standard requirements are well met, the system structure layout is compact, and automatic control and assembly line production are achieved easily.

Description

technical field [0001] The invention belongs to a concrete pouring vibrating device, in particular to a pretensioned prestressed concrete track slab production line pouring vibrating system and its application. Background technique [0002] With the rapid development of China's high-speed railway construction, the production of slab-type ballastless track concrete track slabs has gone through various forms such as CRTS-I, II, and III. In order to avoid deformation and cracking of the track slab, it is usually necessary to pre-stress the track slab to form prestressed reinforced concrete during its production process, thereby improving the bearing capacity, crack resistance and rigidity of the track slab, and increasing durability. In the existing production, two construction methods, post-tensioning and pre-tensioning, are mainly used to manufacture prestressed concrete track slabs. [0003] The traditional production process of post-tensioned prestressed concrete track sla...

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Problems solved by technology

[0003] The traditional production process of post-tensioned prestressed concrete track slabs is to pour and vibrate first, and then stretch after reaching the predetermined strength. Since the production is carried out with a single mold, there are many defects in the process of pouring and vibrating: 1. It is a single mold for production, which must be evenly installed in the workshop at a certain distance. It occupies a large area, and the fabric distribution process cannot be carried out with the help of the ground. It can only use the mode of hoisting the hopper by the upper truss truck. Due to the large area and large number of molds, This leads to frequent operation of the truss truck, long transportation time, troublesome transportation, etc. At the same time, once a link fails, it cannot continue, causing the concrete temperature, humidity and slump in the mixing station or hopper to fail to meet the standard or even solidify, resulting in greater loss

The second is that it is troublesome to fabricate a single mold, and the cross-operation in the whole workshop is frequent, resulting in a long fabricating time, the entire production cycle is greatly lengthened, and the work efficiency is extremely low; at the same time, it consumes a lot of manpower and material resources

The third is that in the process of using the truss truck to lift the cloth, it is difficult to ensure the uniformity of the cloth. It needs to be repeated several times, and it needs to be manually leveled with tools later. The process operation is troublesome, time-consuming and labor-intensive, and the cost is greatly increased.

Fourth, vibrating concrete is achieved by directly vibrating the mold installed on the mold bottom plate or fixed support. Long-term use has a great impact on the size change of the mold, which needs to be measured and adjusted regularly; even the vibration greatly shortens the service life of the mold

Fifth, each mold needs 6 to 8 motors to vibrate. Since the mold is directly installed on the concrete floor, the wires of the motors are staggered and intertwined, forming a great potential safety hazard

Sixth, the vibrating motor directly installed on the mold leaks into the indoor space, causing a lot of noise pollution during the working process

Seventh, the entire pouring and vibrating process requires a lot of manpower and material resources, basically relying entirely on manual operations, the degree of intelligence is not high, and the quality is difficult to guarantee, and there are great human interference factors

The pouring and vibrating process also has certain defects: First, although the distribution machine can walk along the preset track on the ground, 8 molds form a group, and the amount of concrete used at one time is large, so it still needs the distribution machine to pick up materials repeatedly, or The external hopper is transported and fed repeatedly by means of girder trucks

The second is that the distribution machine covers a large area, resulting in a large equipment volume, a large footprint, and high cost. It is difficult to install and place during use.

Third, concrete vibration is still achieved by directly vibrating the mold installed on the mold bottom plate or fixed support. Long-term use has a great impact on the size change of the mold, which needs to be measured and adjusted regularly; even the vibration greatly shortens the service life of the mold

Fourth, the vibrating motor directly installed on the mold leaks into the indoor space, causing a lot of noise pollution during the working process

Fifth, the pouring and vibrating process is actually performed by two different equipment in sequence according to the process, which cannot be integrated into an operation, and the degree of intelligence is not high, and the traceability of video and data cannot be realized

[0007] The applicant searched patents related to the pouring and vibration process of the track slab, but did not find a system that can combine pouring and vibration into one set, all of which are independent single equipment, and there are still defects in the environment of the automated production line based on the application : First, the previous distributing machine and vibrating equipment were independent equipment, which could not realize the uniformity and continuity of the process. Both of them needed to be completed by manual operation, which was inefficient and costly

Second, it is impossible to realize the intelligent and streamlined operation mode of this process

Third, the rationalization, high efficiency, and construction stability of the vibration of the cloth still need to be further improved.

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