Quickly detachable and connected drill pipe for coal mine

Abstract

A mine drill stem capable of being rapidly dismounted and connected comprises a drill tail and a drill library, wherein an inner cavity of the drill library and the drill tail are both of a square or hexagonal structure; an inverted-U-type clamping cap is fixedly arranged on the side wall of the drill library so as to form a cavity between the clamping cap and the side wall of the drill library; an insertion block is arranged inside the cavity in a vertical sliding mode and composed of a square limiting block and a pin rod; the square limiting block at the bottom of the insertion block penetrates through the side wall of the drill library and then extends into the inner cavity of the drill library; a clamping block is arranged on the side wall of the top of the square limiting block; the pin rod on the top of the insertion block is perpendicularly arranged in a through hole in the top wall of the clamping cap in a penetrating mode; a compression spring is arranged between the top wall of the clamping cap and the square limiting block and located inside the cavity; a hemisphere used for jacking up the square limiting block is arranged at the end of the drill tail; and under the state that the drill tail is completely inserted into the inner cavity of the drill library, a clamping groove matched with the square limiting block is formed in a rod body of the drill tail in the circumferential direction. According to the mine drill stem capable of being rapidly dismounted and connected, the elastic insertion block is arranged between the drill tail and the drill library to conduct limiting, and rapid dismounting and connection of the drill stem are realized.

Description

technical field [0001] The invention relates to the technical field of mining machinery and equipment, in particular to a drill pipe that can be quickly disassembled and connected for coal mines. Background technique [0002] With the development of national coal machinery and equipment, mechanized drilling equipment has gradually replaced manual drilling equipment. These equipment not only reduce the labor intensity of workers during use, but also improve work efficiency. Along with the popularization of these equipments, some drawbacks of mechanized drilling have gradually surfaced, and the most prominent problem is the installation and disassembly of drill pipes in the drilling process. In most of the existing drilling equipment, the connection forms of the drill pipe are mainly divided into threaded connection and quick-plug connection. During the use of the threaded drill pipe, the thread can be quickly connected and disassembled, but the whole drill pipe cannot be rev...

AI Technical Summary

Problems solved by technology

During the use of the threaded drill pipe, the thread can be quickly connected and disassembled, but the whole drill pipe cannot be reversed during the drilling process. Once reversed, the drill pipe and the drill bit are easily lost in the hole; quick plug connection The drill pipe mainly relies on square or hexagonal joints to transmit torque, so it will not be affected when the drill pipe is reversed, but most of these quick-insert drill pipes rely on pins or drill pipe connecting pins to connect the drill pipe to overcome the push and pull of the drilling rig Most of these connection methods are cumbersome to connect, especially when the drill pipe is disassembled, the pins are difficult to remove, which makes it difficult to disconnect the drill pipe and seriously reduces the drilling efficiency of mechanized equipment.

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