Quick connection and separation device and method for connecting cylinder with steel casing

Abstract

The invention belongs to a quick connection and separation device and method for a connecting cylinder and a steel casing, the device comprises a cylinder body, a protective ring, a top plate, a U-shaped groove, a connecting square cylinder and a pin rod through hole, and the outer wall of the lower part of the cylinder body of the connecting cylinder is provided with a device for realizing quick connection and separation of each pin rod in the lower end of the connecting cylinder and each steel casing pin hole in the upper end of the steel casing. The quick connection and separation device is composed of a switch rotating disc, an opening hole, a closing inclined plate, a spring chamber, a spring, a pin rod, a switch rod and a pin rod through hole. According to the method, connection or separation of the connecting cylinder and the steel casing is completed through the quick connection and separation device. When the cylinder and the steel casing are in butt joint, the butt joint or separation construction procedure of the cylinder and the steel casing can be completed only by standing on the ground manually, the procedure completion time is short, the site construction progress can be improved, the number of constructors is reduced, time and labor are saved, and construction safety risks are eradicated.

Description

technical field [0001] The invention belongs to a quick connection and separation device for connecting a flower tube and a steel protective tube and a method thereof. Background technique [0002] At present, the drill pipe of the rotary drilling rig is to bury the steel casing by connecting the flower tube to drive the steel casing into the Er, and the burying of the casing is the first process of the pile forming process by the rotary excavation method. The existing connecting flower cylinder includes a cylinder body and a top plate, a cavity is arranged in the cylinder body, the top end of the cylinder body is fixedly welded with the bottom end of the top plate, the bottom end of the cylinder body is provided with an opening, the opening communicates with the cavity, and the outer wall of the cylinder body is provided with an opening. There are pin rod through holes evenly distributed in the circumferential direction, and pin rods are arranged in the pin rod through hole...

AI Technical Summary

Problems solved by technology

[0004] (1) Since the length of each steel casing is usually 5-10m, and the steel casings screwed into the ground often need to be connected in series, so that after the lower end of the connecting flower casing is docked with the upper end of the steel casing, it is necessary to manually build a ladder to a height higher than At the butt joint of the ground, each pin rod (or connecting bolt) is inserted through the through hole and pin hole of each pin rod by the worker to fix the lower end of the connecting flower tube with the upper end of the steel casing, which not only causes troublesome connection between the two, It is time-consuming and labor-intensive, and it is dangerous to work at high altitude by manual ladders, and accidents of workers falling and causing casualties often occur

[0005] (2) When the two are docked or the steel casing is removed, multiple people are required to do the docking operation, which takes a long time

The construction speed is slow, the efficiency is low, and the construction technology of the pin rod or the connecting bolt is relatively complicated, and there are many construction procedures, which have an adverse impact on the construction period of the project

Images