Anchor equipment and anchoring method for tension connection of partially prestressed electric poles

Abstract

The invention discloses partial presressed pole tensioning, connecting and anchoring equipment. The partial presressed pole tensioning, connecting and anchoring equipment comprises a main disc and is characterized in that an auxiliary disc is arranged at one side of the main disc; the diameter of the main disc is larger than that of the auxiliary disc by 30 mm-40 mm; the thickness of the main disc is 40 mm-70 mm, and the thickness of the auxiliary disc is 10 mm-16 mm; a reinforcing rib used for concentrically and fixedly connecting the main disc with the auxiliary disc is fixedly arranged in the main disc and the auxiliary disc, and the length of the reinforcing rib is 80 mm-150 mm; the main disc and the auxiliary disc is respectively provided with a plurality of bolt holes which are distributed in the circumferential direction, the bolts holes in the main disc correspond to the bolt holes in the auxiliary disc in position; a tensioning machine head through hole which is consistent with a tensioning machine head in shape and can allow the tensioning machine head to pass through is formed in the center of the main disc. The partial presressed pole tensioning, connecting and anchoring equipment is simple in structure, small in size, convenient to use and capable of saving materials; in the whole tensioning process, the quality of a product can be judged directly, the quality of the product is controllable, and the machining technique is simple; a reinforced concrete structure in the product is not damaged during tension releasing, and the bearing capacity of the product is not affected.

Description

technical field [0001] The invention relates to a partially prestressed electric pole tension connection anchoring device and an anchoring method. Background technique [0002] At present, some prestressed poles adopt the pretensioning method, and the tensioning method is divided into the inner tensioning method and the outer tensioning method. The tensioning and anchoring method is as follows: a tensioning disc is used, the tensioning disc is fixed with the lead screw through a nut, the inner side of the tensioning disc and the hanging rib plate are connected by a screw, and the electric pole is stretched by pulling the lead screw through the tensioning machine. After pulling, use the anchor plate and tighten the nut for anchoring. The following problems exist in the production process of the product: 1. The length of the prestressed main bar is greater than the length of the steel mold in the external tensioning method, and the prestressed main bar can be seen by visual i...

AI Technical Summary

Problems solved by technology

The following problems exist in the production process of the product: 1. The external tension method is that the length of the prestressed main reinforcement is greater than the length of the steel mold. The prestressed main reinforcement can be seen visually. It is easy to release the tension when stretching, but the structure is more complicated and wastes materials; 2. The internal tension The method is that the length of the prestressed main reinforcement is smaller than the length of the steel mold, and the prestressed main reinforcement cannot be seen visually. Although the material is saved, the screw, nut and tension plate are sealed at the anchorage end during tension, and the inner surface of the pole cannot be seen. Prone to quality problems, and even product scrapping

3. The production of high-tension poles requires very high-strength lead screws for connection and anchoring. The manufacturing process of high-strength lead screws is complex, not easy to process, large in size, concentrated in stress, and easy to damage accessories and tensioning equipment

4. When the product is demolded, it is necessary to provide tens of tons or even hundreds of tons of power equipment to loosen the anchor nut or to loosen the anchor nut by secondary tension, which will seriously affect the internal reinforced concrete structure of the product, resulting in a reduction in the bearing capacity of the product

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