A high-pressure rotary jet power head

Abstract

The invention provides a high pressure jet grouting power head. The high pressure jet grouting power head comprises a reversed beating shell, an integrated slurry pipe, a bit shank, a rotary drilling mechanism, an energy accumulator and a vibrating mechanism, wherein the reversed beating shell, the integrated slurry pipe, the bit shank, the rotary drilling mechanism, the energy accumulator and the vibrating mechanism are axially assembled in sequence; the bit shank is in sleeved connection with the integrated slurry pipe; the rotary drilling mechanism comprises a rotary drilling shell and rotating mechanisms, the rotary drilling shell accommodates a main driving gear, and the rotating mechanisms are symmetrically arranged on the two sides of the rotary drilling shell so as to synchronously drive the main driving gear to rotate, accordingly driving the integrated slurry pipe to rotate through the bit shank which is in clamping connection with the main driving gear; the vibrating mechanism is axially equipped with a vibrator which integrally drives the bit shank to axially vibrate through the energy accumulator; the integrated slurry pipe comprises a pipe body which is arranged in a longitudinally extended mode and a joint formed at one end of the pipe body, and three convey channels which are arranged in a delta shape on any cross section are formed in the pipe body. High pressure jet grouting carried on firm foundations including rocks or stones is realized through the high pressure jet grouting power head, construction efficiency of piles is improved, and the convey effects of high pressure water, compressed air and slurry are effectively enhanced.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a high-pressure rotary jetting power head. Background technique [0002] The rotary jet drilling rig is a drilling tool used to transport slurry, compressed air and clean water, etc., and can ensure continuous dynamic and static tightness under high-pressure working conditions. In the rotary jet drilling rig, the drill pipe is one of the key components, which can transport the slurry and transport the slurry to the drill bit for ejection. [0003] A rotary jet drilling rig usually includes a mandrel through which the slurry is conveyed. Conventional mandrels typically have only one channel for the passage of the slurry and ejecting the slurry from the orifice. When spraying, the slurry is sprayed under the force provided by the rotary jet drilling machine, and at this time, the distance of the slurry spray is determined by the force. Therefore, in the rotary jet ...

AI Technical Summary

Problems solved by technology

Therefore, in the rotary jet drilling machine of the prior art, the distance of slurry spraying is relatively short, and the injection effect is poor, thereby affecting the working efficiency of the rotary jet drilling machine

[0004] At the same time, the traditional jet-jet drilling rig can only rotate in the horizontal direction. In the case of drilling pile holes in solid foundations such as rocks and pouring them to form piles, the traditional jet-jet drilling rig has great limitations.

Because relying solely on the rotary drilling action of the alloy drill bit cannot effectively drill holes in the foundation with rocks or stones and complete the high-pressure rotary spraying process

Therefore, there are certain limitations in the rotary jet drilling machine in the prior art

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