Drill pipe loading and unloading device under non-stop state of drilling rig

Abstract

A drill stem loading and unloading device for a drilling rig in a non-stop state comprises a fixing plate and a buffering plate which are connected by a group of stud bolts and parallel to each other, wherein a clamping groove allowing a drill stem to be placed therein or taken out of is formed in the top of each of the fixing plate and the buffering plate; the vertical center lines of the clamping grooves are superposed with the clamping axis of the drill stem; a group of clamping slips for clamping the drill stem, as well as hydraulic cylinders for driving the clamping slips to move relative to or far away from each other, are symmetrically arranged on two sides of the clamping grooves and close to the bottoms of the clamping grooves; the clamping slips and the hydraulic cylinders are arranged in an accommodating space formed between the fixing plate and the buffering plate; the hydraulic cylinders sleeve the stud bolts by sleeves on the side walls of the cylinder bodies; elastic elements for enabling the buffering plate to perform elastic buffering along the stud bolts sleeve the stud bodies, between the hydraulic cylinders and the buffering plate, of the stud bolts. Together with rotary driving of the drilling rig, the drill stem loading and unloading device realizes screwing in or out of threads at the end part of the drill stem in the clamping state so as to achieve the mechanical loading and unloading effect of the drill stem.

Description

technical field [0001] The invention relates to the field of coal mine equipment, in particular to a drilling rod loading and unloading device in a non-stop state of a drilling rig. Background technique [0002] A drilling rig is a mechanical device that drives a drilling tool to drill holes. During the drilling operation, the drill bit is installed at the front end of the drill pipe, and it is rotated and pushed under the action of the drilling rig to achieve drilling. When drilling, several drill pipes need to be connected end to end. After drilling, the drill pipes are unloaded and recovered one by one. There are two methods for loading and unloading existing drill pipes. The first method is: when loading the drill pipes, after the first drill pipe has been drilled, the rig is powered off and shut down, and then the air blower or Remove the water feeder, install the drill pipe, and then install the air feeder or water feeder. Drilling can only be started after the operat...

AI Technical Summary

Problems solved by technology

[0003] It is safer to use the first operation method to load and unload drill pipes, but it is time-consuming, labor-intensive and labor-intensive, and it will cause great damage to the motor of the pump station; the use of the second method to load and unload drill pipes is more efficient, but it is very prone to injury accidents

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