Large-drift-diameter high-pressure rotation joint used for drilling machine

Abstract

The invention provides a large-drift-diameter high-pressure rotation joint used for a drilling machine. The large-drift-diameter high-pressure rotation joint used for the drilling machine comprises a mull-coupling nut, a first O-shaped ring, a connecting pipe, a gland joint, a main shaft, a first pad, a retainer ring, a clamping key, a second pad, a shell, a lower cover, a first oil seal, a first bearing, a second bearing, a third bearing, a second oil seal, a third O-shaped ring, a compression ring, a V-shaped ring and a supporting ring. The supporting ring, the V-shaped ring and the compression ring are sequentially compressed into an inner stage of one joint end of the gland joint. The second oil seal is compressed into the first pad. The first oil seal is compressed into the lower cover. The first bearing, the second pad, the second bearing, the clamping key, the retainer ring, the third bearing and the first pad are sequentially arranged on the main shaft in a sleeving mode. The clamping key is clamped into a key groove formed in the surface of the main shaft. The main shaft is riveted into the shell. The supporting ring, the V-shaped ring and the compression ring are arranged at one end of the main shaft in a sleeving mode. One end of the shell is connected with and fastened to one joint end of the gland joint. The throughput is increased since the sealing positions are ingeniously and reasonably arranged.

Description

technical field [0001] The invention relates to the technical field of construction tools in construction machinery foundation equipment, in particular to a high-pressure rotary joint for drilling rigs. Background technique [0002] In foundation construction, the soil layer is sometimes treated with anti-seepage, water-proof or reinforcement treatment, so fixed spraying, pendulum spraying or rotary spraying grouting will be carried out into the soil layer to achieve the purpose of anti-seepage and strengthening the bearing capacity of the foundation. However, during the drilling and grouting process of the conventional rotary joint, due to the small diameter, the slag discharge is not smooth, the hole formation is slow, the grouting efficiency is low, and it is easy to block, so the work efficiency is relatively low. [0003] On the other hand, the existing rotary joint structure still needs to be improved, and the main disadvantages include poor sealing performance and sho...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of slow drilling and grouting of existing rotary joints, and propose a large-diameter high-pressure rotary joint for drilling rigs. By improving the structure, increasing the diameter of the flow, and ingenious and reasonable layout of the sealing position, thereby increasing the Large flow rate, smooth and rapid slag discharge, increased hole forming speed, faster grouting speed and less clogging, increased work efficiency, saved time and cost, and greatly improved sealing performance

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