Rotary twist-limiting device

Abstract

The invention relates to a rotary twist-limiting device, comprising a motive power input shaft, a passive gear sleeve, an active gear sleeve piston body, a cylinder sleeve, an oil pipe joint sleeve and a motive power output shaft which are concentric, wherein one end of the motive power input shaft is hollow; the inner part of the hollow part is connected with the hollow active gear sleeve piston body; the left side of the active gear sleeve piston body is meshed with a hollow passive gear sleeve; the external part of the right side of the active gear sleeve piston body is provided with a hollow cylinder sleeve; a cavity is formed in the cylinder sleeve; the passive gear sleeve is internally provided with the motive power output shaft; the cylinder sleeve and the motive power output shaft are integrally fixed with the passive gear sleeve; the motive power output shaft extends towards the right to the external part of the cylinder sleeve; the motive power output shaft out of the cylinder sleeve is provided with the oil pipe joint sleeve; the oil pipe joint sleeve is connected with the cavity through a pipeline; and an active gear sleeve and the passive gear sleeve are contacted in a slope mode. The rotary twist-limiting device is simple in structure, is simple, convenient and rapid to adjust, is low in cost, is used for a deep-hole mechanical drive drilling machine, can be used for solving the problem that the torque is difficult to control, and ensures a drilling tool to be used safely.

Description

technical field [0001] The patent of the present invention relates to a hydraulic torque limiting protection device, which is a device used to protect the drill pipe from being broken within a reasonable torque range during core drilling, and belongs to the field of core drilling. Background technique [0002] As the core drilling depth continues to increase, the capacity of the drilling rig that drives the drilling tool is also increasing. The increase in the capacity of the drilling rig has greatly affected the control accuracy of the drilling process parameters for workers who operate and control based on experience and feeling. The problem caused by inaccurate control is that the drilling torque caused by the abnormality in the hole cannot be found in time and the drilling torque increases suddenly. When the abnormality is found, the drilling tool in the hole is often twisted, resulting in accidents in the hole. The production cost increases, and the production efficienc...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device that can conveniently and accurately control the driving torque of the drill pipe, so as to solve the problem that the deep hole drilling driving torque is too large to twist the drill pipe in the hole

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