Tensioning device and method of prefabricated track plate

Abstract

The invention relates to a tensioning device and method of a prefabricated track plate. The tensioning device comprises a side face tensioning mechanism, an end face tensioning mechanism, a power mechanism, a positioning mechanism and a control mechanism, wherein the side face tensioning mechanism is provided with a plurality of side tensioning units and a plurality of side tensioning power units. The side tensioning units are driven by the side tensioning power units independently to be tensioned. The end face tensioning mechanism is provided with a plurality of end tensioning units and a plurality of end tensioning power units. The end tensioning units are driven by the end tensioning power units independently to be tensioned. The power mechanism is connected with the side tensioning power units of the side face tensioning mechanism and the end tensioning power units of the end face tensioning mechanism so as to provide tensioning driving force. The positioning mechanism corresponds to a mold to be tensioned so as to adjust the height of the mold to be tensioned. The control mechanism is connected with the side face tensioning mechanism, the end face tensioning mechanism and the power mechanism. Tensioning is performed through the multiple tensioning units at the end and side mold directions, so that the tensioning efficiency is greatly improved, and the production period of the prefabricated track plate is shortened.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a tensioning device and a method for a prefabricated rail slab. Background technique [0002] The pretensioning process is widely used in the production process of prefabricated track slabs because of its high reliability, and since the accuracy of the tension of prestressed steel bars has a great influence on the quality of prefabricated track slabs, tensioning of prestressed steel bars is the first step. An important process in the Zhang craft. [0003] At present, there are multiple tensioning devices announced in the prior art, but there are many defects, including: [0004] The Chinese invention patent application with the application number CN201510790767.3 discloses a hand-held miniature prestressed steel wire tensioning device, which includes a lower rotating lifting assembly and an upper fixing assembly, and the lower end of the upper fixing assembly is...

AI Technical Summary

Problems solved by technology

[0007] To sum up, traditional tensioning devices basically require manual participation, and the tension of prestressed steel bars is uncontrollable, resulting in quality defects in prefabricated track slabs. Moreover, the elastic force of prestressed steel bars is large, and the operation safety is not high. Efficiency Low, high working pressure leads to high energy consumption, which is not conducive to energy saving and environmental protection

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