Alarming method and device for preventing drilling rod-dropping accident of rotary digging drill rig

Abstract

The invention relates to a method and device used for avoiding the failure of drill rod of a rotary drill rig, and in particular to an alarm method against the failure of drill rod of rotary drill rig. The method is characterized in that a detecting probe is arranged on an upper part of a buffer of the rotary drill rig; a sensed relation data signal E, which is equal to 1 when entering a sensing zone and equal to 0 when leaving the sensing zone, between the drill rod and a power unit is transmitted to a microprocessor; a displacement sensor which transmits a sensed displacement data C of the power unit to the microprocessor is arranged on a drill mast of the rotary drill rig; a present depth data A of a drill funnel of the rotary drill rig is inputted through an interface circuit of the drill funnel depth to the microprocessor; drill rod data B is inputted into the microprocessor; an output of the microprocessor is respectively connected with a red indicator H1 and a yellow indicator H2, and an alarm buzzer is connected with the red indicator H1 in parallel; the microprocessor sends out signals after judging different states according to the inputted data. Once encountering drill rod failure symptoms, the method and device can send out alarming signal so as to warn operators to deal with mechanic failures.

Description

technical field [0001] The invention relates to a method and a device for preventing accidents of a rotary drilling rig from dropping a drill pipe. Background technique [0002] Rotary drilling rig with telescopic drill pipe. During the lifting process of the drill pipe, the inner and outer layer drill pipes may be stuck due to various reasons such as the deformation of the drill pipe, stones trapped, especially the machine-locked drill pipe cannot be unlocked well, and the inner layer drill pipe carries the outer layer Layer drill pipes are lifted together. This state is commonly known as the "hanging drill pipe" phenomenon. Since the drill pipe goes deep into the pile foundation hole, it is difficult for the operator to find out whether there is an accident symptom of "hanging the drill pipe". In this state, after the drill pipe is lifted to a certain height, the state of "hanging the drill pipe" will be lifted due to reasons such as rotating the drill pipe and machine ...

AI Technical Summary

Problems solved by technology

In addition, the general safety device is not a necessary working mechanism. It is often neglected to check during normal work, and the component damage function is not known after the failure of the component. Once an accident occurs, it will not be able to provide safety protection.

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