Brake device of hollow rotary joint in pile hole

Abstract

The invention discloses a brake device of a hollow rotary joint in a pile hole. The brake device is used for preventing a hydraulic oil pipe installed on the hollow rotary joint in a pile hole from rotating; the upper portion of a transmission shaft is connected with a power head of a ground drilling machine, the lower portion of the transmission shaft is connected with a hydraulic down-the-hole hammer or a pneumatic down-the-hole hammer, and the torque is transferred to the hydraulic down-the-hole hammer or the pneumatic down-the-hole hammer; a brake and the hollow rotary joint are connectedtogether, and meanwhile, a supporting wall frame in the brake extends out and is supported on an inner wall of the pile hole; when a drill tool rotates, an outer ring of the hollow rotary joint connected with the hydraulic oil pipe is prevented from rotating, the hydraulic oil pipe is not wound around the drill tool, so that the hydraulic down-the-hole hammer or the pneumatic down-the-hole hammerdrill tool can continuously rotate and drill in one direction. The brake device of the hollow rotary joint in the pile hole is simple in structure and convenient to operate, the directional effect that when the drill tool rotates continuously in one direction during drilling, a functional hydraulic pipeline or a gas path arranged outside the drill tool in the hole are not wound around the drill tool is realized.

Description

technical field [0001] The invention belongs to a pile foundation engineering drilling machine tool, and in particular relates to a novel braking method of a hydraulic pipeline. Background technique [0002] In the prior art, it is very difficult to carry out piling construction in the rock layer during the construction of the pile foundation in the rock layer. The most advanced piling technology in the rock layer is to use a pneumatic down-the-hole hammer and a hydraulic down-the-hole hammer, and these two large-scale pile foundations During the use of the DTH hammer, the hydraulic oil pipe or air pipe is externally placed on the drilling tool; during construction, the existing technology cannot solve the problem that the hydraulic oil pipe or air pipe winds around the drilling tool when the drilling tool rotates, resulting in the drilling tool During the drilling process, it can only rotate left and right but cannot rotate continuously, thus affecting the drilling quality ...

AI Technical Summary

Problems solved by technology

[0007] 2. The existing technology transmits the working medium to the working device at the bottom of the hole through the hollow rotary joint, which involves the stop problem of the hollow rotary joint

Because in the reality of traditional construction, collapsed holes and buried drills occur from time to time, and salvage is almost impossible, and the probability of hole collapse cannot be increased due to the stop structure

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