Drill pipe sleeve assembly for rotary drilling rig

Abstract

The invention belongs to the technical field of agricultural machinery and relates to a drill stem pipe sleeve assembly for a rotary drilling rig so as to solve the problems that materials and labor are consumed and the mechanical strength of drill stem pipe sleeve assemblies are not high as traditional drill stem pipe sleeve assemblies are welded through a traditional welding forming process. The assembly comprises a drill stem pipe sleeve, a supporting plate connected with the bottom of the drill stem pipe sleeve and four reinforcing plates connected with the drill stem pipe sleeve and the supporting plate respectively. The drill stem pipe sleeve, the supporting plate and the four reinforcing plates are in an integrated casting formed structure. By means of the assembly, the problems are solved.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery and relates to a drill pipe sleeve assembly for a rotary drilling rig. The diameter of a square mentioned in the description refers to the length of the diagonal of the square. Background technique [0002] The drill bit of the rotary drilling rig is mainly composed of drill pipe casing assembly, barrel body, fixed plate, centering drill and other main components. Among them, the drill pipe casing assembly is set on the top of the drill bit and is the coupling shaft for power transmission of the drilling rig. To withstand 40 tons of pressure and / or torsional force, the mechanical requirements for this part are relatively high. The traditional production method (including the current imported products) is composed of drill pipe casing, reinforcing plate (four pieces), supporting plate It is assembled and welded, and the welding forming process adopted is as follows: plate blanking ga...

AI Technical Summary

Problems solved by technology

[0002] The drill bit of the rotary drilling rig is mainly composed of drill pipe casing assembly, barrel body, fixed plate, centering drill and other main components. Among them, the drill pipe casing assembly is set on the top of the drill bit and is the coupling shaft for power transmission of the drilling rig. To withstand 40 tons of pressure and / or torsional force, the mechanical requirements for this part are relatively high. The traditional production method (including the current imported products) is composed of drill pipe casing, reinforcing plate (four pieces), supporting plate It is assembled and welded, and the welding forming process adopted is as follows: plate blanking gas cutting, oblique bevel cutting, slag removal and oxidation layer removal, upper welding mold positioning spot welding, manual correction according to the drawing, full welding and slag removal and grinding, so that The traditional process is expensive, labor-intensive, and has high requirements for operators, so it is difficult for the product to achieve the expected effect.

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