A self-locking device for tensioning prestressed steel bars
A technology of prestressed steel bar and self-locking device, which is applied in the processing of building materials, construction, building construction, etc., can solve the problems of affecting efficiency, time-consuming and labor-intensive, etc., and achieve the effect of improving production efficiency and ensuring uniformity and stability
Active Publication Date: 2017-04-05
SILVERY DRAGON PRESTRESSED MATERIALS CO LTD
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Problems solved by technology
The existing technology is to perform one-by-one nut locking operation by manpower, which is time-consuming and labor-intensive, which affects the efficiency
Method used
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0021] Secondly, the present in...
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The invention provides a pre-stressed reinforcement tension self-lock device which comprises a tension beam, at least one jack, supporting legs, a hanging plate and tension rods. The jacks are mounted in the tension beam, one end of each supporting leg is connected at the bottom of the corresponding jack, the other end of the supporting leg extends out of an end plate of the tension beam, the hanging plate is mounted on the inner side of the end plate, a plurality of holes are formed in the hanging plate, a plurality of corresponding through holes are formed in the end plate, ends of the tension rods extend into the tension beam and are clamped on the hanging plate, synchronous motors are mounted on the outer side of the end plate, and a belt is arranged on the synchronous motors and corresponds to lock nuts on the tension rods. The pre-stressed reinforcement tension self-lock device has the advantages that by the aid of the technical scheme, automation replaces manual operation, production efficiency is improved, and uniformity and stability of a pre-stressed reinforcement tension valve are ensured.
Description
technical field [0001] The invention belongs to the field of prestressed tensioning, in particular to a self-locking device for tensioning prestressed steel bars. Background technique [0002] Prestressed concrete is to make up for the phenomenon of premature cracks in concrete. Before the component is used (loaded), the concrete is pre-stressed, that is, in the tension area of the concrete, the steel bar is tensioned by artificial force. , using the retraction force of the steel bar to pre-stress the tension area of the concrete. This stored preloaded pressure, when the member bears the tensile force generated by the external load, first offsets the preloaded pressure in the concrete in the tension area, and then the concrete is stretched as the load increases, which limits the elongation of the concrete. Delay or prevent cracks from appearing. When stretching, when the tension of the tension rod reaches the design force value, the locking nut on the tension rod nee...
Claims
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IPC IPC(8): E04G21/12
Inventor 沈东升谢铁桥蔡海进田桂华董宝山谢志钦
Owner SILVERY DRAGON PRESTRESSED MATERIALS CO LTD