a pre-tensioning machine

A pre-tensioning and stretching device technology, which is applied in the processing of building materials, construction, building construction, etc., can solve the problems of relying on counterweight work, low efficiency of transfer work, and bulky structure of the tensioning device. The structure is simple and the effect of improving the tensioning efficiency of steel bars
CN109025314BActive Publication Date: 2021-02-02CHINA MINGSHENG DRAWIN TECH INVESTMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA MINGSHENG DRAWIN TECH INVESTMENT CO LTD
Publication Date
2021-02-02

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Abstract

The invention discloses a pre-tensioning machine, which comprises a base frame, a linear stretching device and a steel bar fixing piece. The first end of the base frame is provided with an end seat anchorage, the second end is provided with a fixing seat, the linear stretching device and The steel bar fixing parts are respectively located between the first end and the second end of the bottom frame. One end of the linear stretching device is connected with the fixing seat, and the other end is connected with the steel bar fixing parts. The guide mechanism is guided by the movement of the steel bar, and the moving direction of the steel bar fixing part is consistent with the stretching direction of the linear stretching device. With this device, one end of the steel bar is fixed by the end seat anchorage, and the other end is fixed by the steel bar fixing piece. The linear stretching device drives the steel bar fixing piece to perform pre-tensioning. The guiding mechanism on the bottom frame guides the movement of the steel bar fixing piece. Prevent the linear stretching device from shifting when pulling the steel bar, ensure the same pre-tensioning force of the steel bar, improve the tensioning efficiency of the steel bar, and the structure of the device is simple without frequent setting of suspension counterweights.
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Description

technical field

[0001] The invention relates to the field of stretching equipment, more specifically, to a pre-tensioning machine. Background technique

[0002] Prestressed steel bars need to be pre-tensioned before the overall tensioning of the steel bars. The purpose is to ensure that the initial state tension of each steel bar is as uniform as possible when the steel bars are stretched, and to avoid individual steel bars not being stretched properly. , affecting the performance of prestressed laminated slabs.

[0003] According to the requirements of the overall pre-tensioning process, the use of the pre-tensioning machine meets the basic needs of convenience, speed, and flexible operation. The existing technology has the following disadvantages: heavy structure, need to rely on counterweight to work, cumbersome operation, equipment transfer, frequent suspension of counterweight, poor clamping reliability and low efficiency of mobile transfer. Contents of the invention...

Claims

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