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Piston-type hydraulic chuck, power head and drilling rig

A hydraulic chuck and piston type technology, which is applied in the direction of drill pipe, drill pipe, earth cube drilling, etc., can solve the problems of easy accumulation of rock dust, slow response of chuck opening, etc., and achieves easy maintenance, simple structure, and reliability strong effect

Active Publication Date: 2020-12-29
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a piston-type hydraulic chuck, power head and drilling rig, which solves the problems of the existing piston-type chucks, such as slow chuck opening response and easy accumulation of cinder and rock powder inside the chuck, and has a simple structure. , easy maintenance operation

Method used

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  • Piston-type hydraulic chuck, power head and drilling rig
  • Piston-type hydraulic chuck, power head and drilling rig
  • Piston-type hydraulic chuck, power head and drilling rig

Examples

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Embodiment 1

[0045] Embodiment 1. Piston hydraulic chuck:

[0046] combine Figure 1-4 , the piston hydraulic chuck of this embodiment includes a chuck body 1, and a slip assembly 2 and a radial power assembly 3 are arranged radially in the chuck body 1, and the slip assembly 2 includes a plurality of chucks arranged circumferentially. The shoe 21 is connected by a return spring 22 between adjacent slips 21; an elastic barrier 23 is arranged corresponding to the gap between adjacent slips 21, and one end of the elastic barrier 23 is pressed against the radial power assembly 3, and the other end of the elastic barrier 23 The gap between adjacent slips 21 is blocked.

[0047] The slip assembly 2 is provided with three groups of slips 21 along the circumferential direction for clamping the drill pipe; a return spring 22 is provided between adjacent slips 21; the radial power assembly 3 includes a radial oil cylinder 31 and a radial piston 32 And the disc spring 33, the outer middle planes o...

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Abstract

The invention relates to a piston type hydraulic chuck, a power head and a drilling machine. The piston type hydraulic chuck comprises a chuck body, a slip assembly and a radial power assembly are successively arranged in the radial direction in the chuck body, and the radial power assembly and the slip assembly are of a split force transfer structure; and the slip assembly comprises a plurality of slips arranged in the circumferential direction, every adjacent slips are connected through a reset spring, an elastic blocking part is arranged corresponding to a gap of every adjacent slips, one ends of the elastic blocking parts tightly prop the radial power assembly, and the other ends of the elastic blocking parts block the gaps between the adjacent slips. According to the piston type hydraulic chuck, the problem that traditional piston type chucks cannot work properly due to accumulation of internal coal cinders and rock powder can be effectively solved, and meanwhile, the problem of slow response during chuck releasing is solved; and the structure is simple, maintenance is easy, and the reliability is high.

Description

technical field [0001] The patent of the invention belongs to the field of hydraulic chucks of tunnel drilling rigs, and relates to a piston-type hydraulic chuck, a power head and a drilling rig. Background technique [0002] The chuck is an important component of the drilling rig. It is installed on the power head and used as a clamping device for the drilling rig. The chuck is mainly used to clamp the drilling tool and provide torque and axial force to the drilling tool. [0003] At present, the common hydraulic chucks of tunnel drilling rigs mainly include rubber cylinder type, inclined plane booster type and piston type hydraulic chucks. Among them, the piston hydraulic chuck has gradually become a new hotspot in hydraulic chuck research due to its advantages of high reliability, high efficiency, and low maintenance cost. [0004] There are still some deficiencies in the existing common piston hydraulic chuck technology, which cannot satisfy the use of coal mine tunnel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/10
CPCE21B19/10
Inventor 宋海涛梁春苗彭涛姚亚峰李坤王毅韩健刘亦洋
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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