Large-diameter wide-fin spiral drill rod

Abstract

The invention discloses a large-diameter wide-fin spiral drill rod. The large-diameter wide-fin spiral drill rod comprises a drill bit, a connecting block and blades, wherein a clamping block is fixedly mounted on the outer wall of the drill bit; the outer wall of the clamping block is movably connected with a clamping groove; the outer wall of the clamping groove is fixedly connected with a firstdrill rod; and a threaded groove is formed in the surface of the first drill rod. According to the large-diameter wide-fin spiral drill rod, a bolt penetrates through the threaded groove and is in butt joint with a mounting hole in the drill bit, thus, after being scrapped, the drill bit can be separately disassembled, and unnecessary waste is reduced; the connecting block is mounted in a chute from an opening end of the chute, thus, the first drill rod is fixedly connected with a second drill rod, after the large-diameter wide-fin spiral drill rod is used, the first drill rod and the seconddrill rod can be disassembled, a fixing plate is mounted in the chute, then, a fixing bolt penetrates through a mounting hole in the fixing plate and is connected with a mounting hole in the chute, the fixing plate is firmly mounted in the chute, the opening end of the chute is closed, and the connecting block cannot be separated from the chute.

Description

technical field [0001] The invention relates to the technical field of drill rods, in particular to a helical drill rod with a large diameter and wide fins. Background technique [0002] The auger drill rod has the characteristics of fast drilling speed, good hole formation, high drilling efficiency, greater torque, stable operation, and automatic locking of spring pins. When drilling deep holes, the drill rod is also equipped with cotter pins to increase the transmission torque. It greatly reduces the loss of drill pipes, and adopts plug-in screw connection, which is convenient and quick to disassemble, has good sealing performance, high tensile strength, and high pile quality. [0003] Most of the drill bits at the top of the large-diameter and wide-fin auger drill pipes used in the market are integrated with the drill pipe. Since the drill bit will often rub against some solid objects during use, the wear speed of the drill bit is faster than that of the drill pipe. The ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a large-diameter wide-fin auger drill rod, to solve the problem that the above-mentioned background technology proposes. During use, the drill bit will often rub against some solid objects, so that the wear rate of the drill bit is faster than the overall wear rate of the drill pipe. However, due to its integrated design, the drill bit cannot be effectively replaced separately, so that the whole can only be used as a Disposal issues

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