A tensioning device and tensioning process for reinforced prefabricated piles

Abstract

The invention provides a tensioning device and a tensioning process for reinforced prefabricated piles. The new tensioning process includes a main bar with double headers at both ends, and the headers at the end of the main bar are snapped into the counterbore of the tensioning plate. Inside, the headings in the middle part are clamped in the counterbore of the end plate at one end, and a traction device is added on the tensioning head plate, so that all the headings can be tightly clamped with the corresponding counterbore. When the steel bars with several double-headed main reinforcements at both ends are caged into the cage, the reinforcement holes of the end plates at the head and tail end pass through the two headers of the main reinforcement in turn, and the headers at the head and tail ends of the main reinforcement pass through the reinforcement tensioning head plate and In the reinforcement hole of the tensioning tail plate, the tensioning head plate, the tensioning tail plate and the end plates at the head and tail end are rotated at a certain angle to realize the clamping connection of the heading head and the corresponding counterbore. In this method, both ends of all the main bars are subjected to secondary heading processing, and the heading heads are respectively assembled and clamped with the end plate and the tension plate, which realizes the need not to use bolts to connect the tension plate, simplifies the process flow, and reduces the labor cost of employees. Labor intensity.

Description

technical field [0001] The invention relates to the production field of prefabricated components, in particular to a new tensioning process for prefabricated piles. Background technique [0002] As a new construction product, pre-tensioned concrete prefabricated piles are widely used in the construction of all walks of life. In order to improve the bending resistance of the prefabricated pile product, in the production stage of the reinforcement cage, it is necessary to install end plates with several countersunk holes or sleeves with countersunk holes at both ends of the precast pile mold. Both ends of the main rib are processed with upsetting heads in the shape of enlarged heads, and the same number of upsetting heads on both sides are respectively clamped in the counterbores of the end plates or sleeves at both ends, and then tension bolts are used to connect the tension plate at the end to the end plate at the end. The end plate is connected and fixed, and the tension p...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a new type of tensioning process, which effectively solves the problems of high labor intensity and low production efficiency of the original technology by designing a new type of tensioning plate and the structure of the main bar heading head

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