A drilling rig variable amplitude supporting device

Abstract

The invention discloses a variable-amplitude bearing device of a drilling machine. The variable-amplitude bearing device comprises a variable-amplitude unit and a rolling friction unit. The non-swing end of the variable-amplitude unit is fixedly arranged on the drilling machine. The rolling friction unit is arranged at the swing end of the variable-amplitude unit. A drilling machine nose is arranged on the rolling friction unit. Through the variable-amplitude unit, the rolling friction unit and a drilling machine unit can be adjusted to swing in the range of 0-105 degrees. The rolling friction unit can drive the drilling machine nose to travel in a rolling mode in the axial direction. According to the variable-amplitude bearing device of the drilling machine, upward and downward vertical holes can be obtained, and drilling operation in any angle relative to the vertical holes can be achieved.

Description

technical field [0001] The invention belongs to the field of drilling equipment, in particular to a drilling rig luffing supporting device. Background technique [0002] In the field of coal mining, with the development of technology, new drilling rigs with various functions have been applied. Their basic structures are similar and their basic functions are the same. The drilling functions of horizontal holes, inclined holes and vertical holes have been basically realized. In the past, when the traditional technology was adopted in the design of the drilling rig, the design bottleneck of the drilling rig function was caused due to the narrow downhole space, which is mainly summarized as follows: [0003] 1. The propulsion mechanism of the drilling rig mast adopts rack and pinion double-speed transmission mechanism. The advantage of this structure is that it solves the problem of insufficient space and can double the stroke of the drilling rig. The disadvantage is that the pr...

AI Technical Summary

Problems solved by technology

The disadvantage is that the sliding resistance is large. Due to the large amount of dust underground, a large amount of dust enters the U-shaped groove, which is difficult to clean, which increases the walking resistance and accelerates the damage of the slide rail;

[0005] 3. The angle adjustment mechanism of the mast has a complex structure and poor stability

Typically, it is a fixed force support for the crank connecting rod mechanism, and the drilling rig vibrates seriously during drilling operations;

[0006] 4. The support of the drilling rig depends on the upright oil cylinder support, which cannot support the mast at all angles;

[0007] 5. There are many welded structures, and the overall structural strength is poor; the underground corrosion intensity is high, and weld cracks are prone to crevice corrosion, which accelerates the damage of important structural parts;

[0008] 6. The narrow downhole space requires the drilling rig to be small in size, and it is difficult for the drilling rig to realize the telescoping function for the requirement of small volume and high thrust

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