Combined-type mine drill rod

Abstract

The invention discloses a combined-type mine drill rod which is formed by connecting a plurality of drill rod assemblies in a matched mode. Each drill rod assembly comprises a drill rod body, a female joint, a male joint and a pin, wherein the drill rod body is hollow and is of a columnar structure, the two ends of the drill rod body are provided with threads, the female joint is hollow and is of a columnar structure, one end of the female joint is provided with threads, the female joint is fixed to one end of the drill rod body through the threads, an L-type fixing block is arranged at one end, away from of the drill rod body, of the female joint, the L-type fixing block is composed of a sliding way and a circular hole, the sliding way is arranged in the axial direction of the female joint, and a right angle is formed between the central axis of the sliding way and the center of the circular hole. The combined-type mine drill rod is reasonable in design, easy to assemble and disassemble, welding is not required by connection between drill rods, the male joints, the female joints and the drill rod bodies are connected more firmly, the service life of the drill rod is greatly prolonged, economic benefits of a coal mine are increased, and the accident rate of the coal mine is effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of mining machinery, and in particular relates to a combined drilling rod for mining. Background technique [0002] Coal seams are generally layered, layered, or bifurcated, compounded, and pinched out along the strike and dip, and some are in the shape of lenticular, watercress, chicken coop, and beaded. The change of coal seam shape and thickness is caused by various geological factors, and is closely related to the geological background during and after the coal accumulation period. Some belong to the early stage of peat accumulation, such as the uneven bottom of the swamp, the uneven subsidence of the swamp, the changes in the shape and thickness of the coal seam caused by the erosion of the peat layer by river water or sea water, etc., which are called the original change of the coal seam; some belong to after the peat layer is covered. , such as changes in shape and thickness caused by geological proc...

AI Technical Summary

Problems solved by technology

[0004] At present, the traditional connection method of two drill pipe units is threaded connection, and the connection time for loading and unloading one end of a drill pipe is 1-2 minutes, and a large torque is required to complete the loading and unloading of the drill pipe, which is time-consuming and laborious

And in the drilling process, it is necessary to continuously lift and run in the drill. The drill pipe must be disassembled when lifting and running in the drill. During the transfer process of the drilling rig, the drill pipe must also be disassembled and transported separately, so loading and unloading the drill pipe will cost a lot. a lot of time and manpower

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