Elastic pin type mechanical quick connector for connecting prestressed concrete pipe piles

Abstract

The invention discloses an elastic pin type mechanical quick connector for connecting prestressed concrete pipe piles. The quick connector comprises a first end plate and a second end plate which are connected with a first concrete pipe pile and a second concrete pipe pile, two elastic pins, a connecting pin, two elastic pin stoppers, two springs and two protective covers, wherein connecting holes are formed at opposite positions of the two end plates; the connecting pin is a cylinder, and two ends of the connecting pin are provided with a first clamping hole and a second clamping hole which can be matched with the two elastic pins; the protective covers are provided with accommodating grooves and withdrawing grooves; the springs and the elastic pins are accommodated in the accommodating grooves of the protective covers; and the elastic pin stoppers are positioned in the withdrawing grooves of the protective covers and are pressed against end faces of the elastic pins when the connecting pin is not inserted. The connector has no directionality, high construction speed and high connecting reliability.

Description

technical field [0001] The invention relates to a quick connection of prestressed concrete pipe piles in pile foundations, in particular to a spring pin type quick mechanical joint used for the connection of prestressed concrete pipe piles. Background technique [0002] In the construction of prestressed concrete pipe piles, pipe piles are often connected by welding the end plates of pipe piles. [0003] In the traditional welding method, 4 to 6 points are symmetrically spot-welded along the periphery of the groove of the end plate. After the upper and lower pile joints are fixed, the guide hoop is removed and then welded in three layers. The welding must be carried out symmetrically on both sides, and each joint costs 20 to 28 minutes. According to the construction regulations, the pile-connected welds must be naturally cooled for 8 minutes before continuing to sink the pile. Adopting the welding piling method, the welding process consumes more man-hours, the work efficie...

AI Technical Summary

Problems solved by technology

Compared with traditional welding, mechanical connection has obvious advantages, but several mechanical connections currently used also have some disadvantages: some mechanical connections have complex structures, difficult alignment, and high cost; The angle is not easy to control

However, there are also defects in this connecting joint: 1. The reliability of component connection is poor due to tooth connection

2. The joints are not symmetrical, which leads to the directionality of the pipe piles, which is inconvenient to operate. Moreover, the pipe piles must be produced in a complete set when they are prefabricated. , it will seriously affect the production of pipe piles and the progress of on-site pile sinking construction.

3. It is difficult for the square tooth end of the connecting pin to mesh with the meshing teeth of the connecting plate, and the operation is inconvenient

Images