Machining device for advanced small guide pipe for underground space and hydraulic tunnel

Abstract

The invention relates to the technical field of advanced small guide pipe manufacturing, in particular to a machining device for an advanced small guide pipe for underground space, a hydraulic tunneland the like. The machining device comprises a machine frame, a movable clamp, a grouting hole machining assembly and a heating assembly. According to the machining device, the movable clamp slides along the machine frame, advances forwards and backwards in a gear transmission mode, advances stably and is reliable and durable, the contact area between the movable clamp and the advanced small guidepipe is large, the movable clamp and the advanced small guide pipe are tightly combined, and the pressure of a punching machine is conveniently borne; a left drilling machine and a right drilling machine are in linkage with each other and apply force to drill holes at the same time, so that the drilling efficiency is improved, in addition, the radial acting force of the small guide pipes is offset, and through the width design of fixing blocks, enough space is reserved between the drilling machines so as to avoid damage; and the heating assembly adopts a mode of heating inside and outside a steel pipe simultaneously, so that the heating efficiency is multiplied, and the machining device is worth of popularization.

Description

technical field [0001] The invention relates to the technical field of preparation of advanced small conduits, in particular to an advanced small conduit processing device for underground spaces and hydraulic tunnels. Background technique [0002] The advanced small conduit construction technology is a technological method in underground space and hydraulic tunnel engineering. It is mainly used for the weak broken zone, shallow buried section, tunnel entrance bias section, sand layer section, sand pebble section, and fault fracture during the self-stabilizing period. Pre-bracing on lighted lot. The advanced small conduit construction technology is a very effective auxiliary construction method for stabilizing the excavation face. In the construction of weak and broken rock formations, the advanced small conduit can reinforce the loose rock formation, and the loose and weak surrounding rock can be strengthened after grouting. The stability is conducive to the stability of th...

AI Technical Summary

Problems solved by technology

In actual operation, due to the high punching pressure, the clamping part is not stable in clamping the steel pipe, causing the punching position to deviate. The screw jack is easily affected by the radial force and the propulsion direction deviates from the predetermined direction, which requires timely maintenance by the operator. This increases the workload of the operator and prolongs the production time of the small conduit; in addition, in the process of making the cone head, the axial reaction force is relatively large, resulting in damage to the internal thread and making the seamless steel pipe unable to advance

[0004] In addition, the heating process is currently a time-consuming link in the processing of advanced small catheters. The only way to shorten the heating time is to increase the power of the high-frequency heating coil, or to reduce the diameter of the high-frequency heating coil to increase the radiation efficiency, resulting in Increased coil loss, resulting in frequent coil replacement during the production of small catheters

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