Novel tension assembly structure for production of prestressed pipe pile

Abstract

A novel tension assembly structure for production of a prestressed pipe pile comprises a head plate (1), a clamp hoop (2), a pipe die (3), a tension plate (4), a baffle (5), a tension screw rod (6), a tension nut (7), a tail plate (8), a tail plate clamp hoop (9) and a tension screw rod assembly. The novel tension assembly structure is characterized in that the head plate (1)) is fixed to the tension plate (4) at one end of the tension screw rod assembly through the clamp hoop (2), the baffle (5) at the other end of the tension screw rod assembly is fixed to the lower portion of the pipe die (3) through a bolt, the tail plate (8) is installed on the tail plate clamp hoop (9), the tail plate clamp hoop (9) is fixed to the tail end of the pipe die (3) through a bolt, an upper die assembly and a lower die assembly of the pipe die (3) are fastened through bolts, and the tension screw rod assembly is connected with a tensioner, so that tension is produced. The novel tension assembly structure is simple, greatly reduces the weight of the head plate and the weight of the tail plate, reduces labor intensity of basketing workers and improves safety of the basketing workers; transportation and basekting are easy and convenient to carry out, the weight of the head plate is 1 / 3 that of an original head plate and the weight of the tail plate is 1 / 3 that of an original tail plate.

Description

technical field [0001] The invention relates to a novel tension assembly structure, in particular to a novel tension assembly structure for producing prestressed pipe piles. Background technique [0002] The tensioning assembly of the traditional pipe pile production line is composed of five pieces: the tensioning head plate, the tensioning tail plate, the tensioning screw rod, the tensioning baffle and the lock nut, commonly known as internal tensioning. The internal tensioning equipment is simple and easy to operate. However, there are the following problems: 1. Before each filling, the cage workers need to move the head plate, tail plate, screw rod and other components to disassemble-clean up-cage; after filling, five pieces need to be removed. The pipe pile can only be hoisted away after the sets of parts are disassembled one by one; 2. The tension force is completely carried by the screw rod. Due to the limited stress area of ​​the screw screw thread, the matching leng...

AI Technical Summary

Problems solved by technology

However, there are the following problems: 1. Before each filling, the cage workers need to move the head plate, tail plate, screw rod and other components to disassemble-clean up-cage; after filling, five pieces need to be removed. The pipe pile can only be hoisted away after the sets of parts are disassembled one by one; 2. The tension force is completely carried by the screw rod. Due to the limited stress area of ​​the screw screw thread, the matching length needs to be longer, resulting in a larger thickness of the connecting parts. The weight is relatively large, especially the total weight of the head board, tail board and screw rod is large, and the weight of each board ranges from 50kg to 100kg, which leads to a very high labor intensity and poor safety for the cage workers; 3. The head board and the tensioner The drawing rods are connected by threads. During the production process, the head plate and the screw rod are connected as a whole, which brings difficulties in the assembly and disassembly of the head plate and the tension baffle.

4. Using this five-piece tensioning method is prone to defects and quality problems such as skewed end faces of prefabricated piles and deformation of tensioned plates. This is mainly due to the unreasonable force and the lack of uniform force around the pile, which makes the end face of the pile skewed. , the emergence of quality problems such as tension plate deformation

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