Resilience prevention bridge girder prestress tension device

Abstract

The invention discloses a resilience prevention bridge girder prestress tension device. The resilience prevention bridge girder prestress tension device comprises a first-level oil cylinder and a second-level oil cylinder, wherein a first-level piston in the first-level oil cylinder and a second-level piston in the second-level oil cylinder move towards opposite directions, a first-level anchorage device and a second-level anchorage device are respectively connected on the first-level piston and the second-level piston, a steel strand penetrating through a bridge girder prestress hole penetrates through the first-level anchorage device and the second-level anchorage device and is fixedly connected with the first-level anchorage device and the second-level anchorage device, front end tapered clamp pieces and rear end tapered clamp pieces are respectively sleeved at the front end and the rear end of the steel strand, a bridge girder is provided with hole positions, corresponding to the front end tapered clamp pieces, of an embedded anchorage device pad, and the front end tapered clamp pieces are ejected into the hole positions of the embedded anchorage device pad along with the motion of the second-level piston. The resilience prevention bridge girder prestress tension device is delicate in structural modification, ejects the front end tapered clamp pieces into the hole positions of the embedded anchorage device pad to prevent resilience by utilizing the motion of the pistons, the project quality of the bridge girder can be guaranteed, and the operation is more convenient and safer.

Description

Technical field [0001] The present invention involves bridge machinery, mainly a pre -tension device for anti -rebound bridge. Background technique [0002] In the construction of the bridge, you need to wear steel twisted wires in the pre -force tube of the bridge, and then use a tension device to stretch the steel twisted wire.The rebound of the rear steel twisted line makes the cone -shaped clamp plug into the hole in the holes of the embedded anchor pad.It is more difficult to produce tension. In particular, after the steel twisted line is rebounded, the prestressed stress applied on the bridge is often different from the prestress of design, which will inevitably have a great impact on the quality of the project. Invention content [0003] The technical problem to be solved by the present invention is to provide a pre -stretch device for anti -rebound bridge. The structure is cleverly improved. The piston movement is used to push the conical clip into the holes of the embe...

AI Technical Summary

Problems solved by technology

[0002]In the construction of bridges, it is necessary to pass steel strands in the prestressed pipes of the bridge, and then stretch the steel strands with a tensioning device. The tapered clips are set on the strands, and the steel strands rebound after the steel strands are released, so that the tapered clips are inserted into the holes of the embedded anchor pads to tension the steel strands. This method needs to be applied The steel strand is stretched by a force greater than the designed prestress, and it is difficult to generate tension. In particular, after the steel strand rebounds, the prestress imposed on the bridge by the steel strand is often quite different from the designed prestress. The difference, which will inevitably have a great impact on the quality of the project

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