A luffing rolling friction drilling mechanism

Abstract

The invention discloses an amplitude variation rolling friction drilling machine component. The amplitude variation rolling friction drilling machine component comprises a drilling machine unit, an amplitude variation unit and a rolling friction unit. The amplitude variation unit comprises a cross beam which is a telescopic cross beam. The cross beam comprises a telescopic beam and a fixed beam which are sleeved with each other, and tracks are arranged on the telescopic beam in the length direction in a spaced mode. The fixed beam end of the amplitude variation unit is fixedly arranged on a drilling machine. The telescopic beam end of the amplitude variation unit is provided with the rolling friction unit. The rolling friction unit and the head of the drilling machine can be adjusted to swing in the range of 0-105 degrees through the amplitude variation unit, and the rolling friction unit can drive the head of the drilling machine to walk in a rolling mode in the axial direction of the rolling friction unit. The drilling machine unit comprises a drilling machine power head, a drilling rod and a drilling bit. The drilling machine power head is installed on the rolling friction unit. The drilling rod and the drilling bit are sequentially installed on the drilling machine power head.

Description

technical field [0001] The invention belongs to the field of drilling equipment, in particular to a variable-amplitude rolling friction drilling machine component. 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 dis...

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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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