Integrated drill stem clamping and mounting-dismounting device for core drilling machine

Abstract

The invention discloses an integrated drill stem clamping and mounting-dismounting device for a core drilling machine. The integrated drill stem clamping and mounting-dismounting device is equipped with an upper holder, wherein the upper holder comprises an upper holder housing; a core tube is arranged in the upper holder housing; a lower holder is arranged below the core tube; the lower holder comprises a base, a roller wheel blocking component is arranged inside the base, and a hydraulic oil cylinder is arranged outside the base of the lower holder; the top of the base is upwards equipped with a sleeve which is arranged on the lower part of the core tube in a sleeving mode; a drill stem screw pitch regulating device is arranged outside the core tube between the lower holder and the upper holder. According to the integrated clamping and mounting-dismounting drill stem device, the sleeve and the core tube are in threaded connection, the screw pitch of the threads is same as that of threads of the drill stem, and the drill stem is enabled to relatively move by displacement of one screw pitch in an axial direction of the drill stem every time the drill stem rotates by one circle in the drill stem mounting and dismounting processes, so that the drill stem threads are enabled to be not damaged in the mounting and dismounting processes; the drills tem screw pitch regulating device between the lower holder and the upper holder is utilized, so that the quantity of workers and labor intensity of the workers are reduced, and mechanical control automation is realized.

Description

technical field [0001] The invention relates to geological exploration equipment, in particular to an integrated clamping and unscrewing drill pipe device for a core drilling rig. Background technique [0002] As the country's geological exploration work continues to move towards deeper holes, especially for deep holes over 2,000 meters, the drilling rig takes a long time to lift and drill each time (it is necessary to lift all the drill pipes from the bottom of the hole, It usually takes 1-3 days or even longer to lift the drill and drill down each time), the drill pipe holder and the unscrewing drill pipe device are two major components of the core drilling rig's auxiliary equipment, which require workers to operate frequently for a long time , so whether its use is convenient and reliable, and the level of labor intensity of workers are directly related to the construction efficiency and cost of the entire hole. The existing clamper is used to clamp the drill pipe at the...

AI Technical Summary

Problems solved by technology

Existing drill pipe clamps require manual manual loading and unloading of the clamping slips. Although the open-type hydraulic pliers can complete the operation of unscrewing and unscrewing the drill pipe at the hole, it requires two people to cooperate frequently. The relative axial displacement between the drill pipes is neglected in the process of screwing and unfastening, which will cause push or pull damage to the connecting thread of the drill pipe in the axial direction during the process of screwing and breaking off, thus reducing the service life of the drill pipe and increasing the Drill pipe bottom accident rate

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