Differential tool anchor

Abstract

This invention is a differential tool anchor relating to a pre-stress tension auxiliary component that is composed of S+1, S=1-5 anchor plates package. Each plate is linked with the screw, its head is fixed by the cap nut and the packing sheet, every anchor plate has the anchor hole to fix the steel rubber wires and the through hole; the tool anchor M1 is locating connected with the jack through the screw, the tool anchor carries out location through the spring on the screw and located between the two anchors Ms and Ms+1, the locating block composed of the bush, the packing sheet and the cap nut. The length of the bush is less than that of the spring. The holding flap of the anchor Ms is located on the anchor Ms+1 through flap screw. And Ms move to the direction of Ms+1 along the compress of the screw. This invention can accurately control the error of the pre-stress elongation value and can full extend the anchor rope for one time. The operation of it is simple and reliable.

Description

Technical field: [0001] The invention relates to a prestressed tendon tensioning auxiliary member, in particular to a differential tool anchor. Background technique: [0002] In the current practice of prestressed geotechnical engineering, there are more and more projects using prestressed anchor cables for reinforcement, and the proportion of load-dispersing anchor cables is also increasing. Due to the structural characteristics of load-dispersing prestressed anchor cables ——The length of the steel strands of each layer of carrier is different, and its tensile elongation value is also different. In the traditional tensioning process, the existing ordinary tool anchors must be used for multiple compensation tensions during the tensioning process. It can make the tension of the steel strands of each layer of the carrier tend to be consistent. On the one hand, the number of tensioning processes is many and the cost is high. In addition, it is not easy to control and cannot mee...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in the practice of prestressed geotechnical engineering, in the tensioning construction process of the load dispersion type prestressed anchor cable, the existing common tool anchor must be compensated for multiple tensions, so that each layer can bear the load. The cable tension of the whole steel strand tends to be consistent. On the one hand, the number of tensioning processes is high and the cost is high. In addition, it is difficult to control and cannot meet the requirements of uniform cable tension of the steel strand.

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