A reaction frame for steel wire rope prestressed anchor cable tensioning

Abstract

The invention provides a reaction frame for stretching a pre-stress anchor rope of a steel wire rope. The reaction frame comprises a movable transverse beam (5), a tensioning hydraulic jack (8), a fixed transverse beam (9), a guide reaction stand column (7) and an adjusting mechanism, wherein the movable transverse beam (5) can be connected and fixed with an inserting section of a steel wire rope anchor rope (19); the tensioning hydraulic jack (8) is connected with the movable transverse beam (5); the fixed transverse beam (9) is used for supporting the tensioning hydraulic jack (8); the fixed transverse beam (9) is connected with the tensioning hydraulic jack (8); the tensioning hydraulic jack (8) enables the movable transverse beam (5) to get close or be far away relative to the fixed transverse beam (9); the guide reaction stand column (7) is connected with the fixed transverse beam (9); the adjusting mechanism can be used for adjusting the position, relative to one end or the other end of the guide reaction stand column (7), of the fixed transverse beam (9). The reaction frame for stretching the pre-stress anchor rope of the steel wire rope has the characteristics of rapid installation speed, synchronization of the jack, capability of adjusting the position of the jack through a hydraulic system, accurate stretching force and accurate elongation amount, and low manual labor intensity in a stretching process and the like.

Description

technical field [0001] The invention relates to a reaction force frame used for tensioning steel wire rope prestressed anchor cables. Background technique [0002] The steel wire rope prestressed anchor cable reaction frame is suitable for the tensioning process of the steel wire rope prestressed anchor cable in the cableway bridge project. The existing steel wire rope prestressed anchor cable tension tool is mainly composed of a jack, a beam, and a steel backing plate. The tool has the following disadvantages: [0003] 1. Poor accuracy of actual elongation [0004] During the tensioning process of the existing steel wire rope prestressed anchor cable tensioning tool, there is a phenomenon of inclination due to the inability of the two synchronous jacks to synchronize, resulting in the actual prestress of the steel wire rope not meeting the design requirements, and the accuracy of the actual elongation is poor. [0005] 2. The safety risk of stretching is high [0006] Du...

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems of high safety risk and low efficiency in the tensioning of the existing reaction force frame, the present invention provides a reaction force frame for tensioning the steel wire rope prestressed anchor cable. The force frame has added structures such as guiding reaction columns, fixed beams, load-bearing pulleys, etc., and the tensioning jack is fixed on the fixed beams, making the tensioning tool a mechanical-electrical-hydraulic integrated structure, with fast installation speed, synchronous jacks, The jack position is adjusted by the hydraulic system, the tension and elongation are accurate, and the labor intensity of the tensioning process is low, which ensures the project quality of the steel wire rope prestressed anchor cable tensioning and improves the safety performance of the tensioning tool.

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