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Roofbolter and gripper thereof

A technology for a holder and a fixing bracket, which is applied in the field of rock bolt drilling rigs and their holders, can solve the problems of the holder losing the clamping effect of the drill pipe, being separated from the center of the bracket 4, and unable to hold the drill pipe tightly.

Inactive Publication Date: 2016-06-01
BEIJING CSR TIMES LOCOMOTIVE & ROLLING STOCK MECHANICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the drill rod 3 is deflected due to the self-weight of the drill rod 3 or the randomly distributed pebbles in the formation during drilling, the drill rod 3 will break away from the center of the support 4, that is, the center of circle of the drill rod 3 is no longer located at the two sides. The center of the circle enveloped by a clamping guide block 2, and then cause the clamping guide block 2 to be unable to hold the drill pipe 3 tightly, and finally the entire clamper loses its clamping effect on the drill pipe
[0005] Therefore, how to solve the technical problem that the clamper in the prior art cannot clamp the drill rod when the drill rod breaks away from the center of the support has become an important technical problem to be solved by those skilled in the art

Method used

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  • Roofbolter and gripper thereof
  • Roofbolter and gripper thereof
  • Roofbolter and gripper thereof

Examples

Experimental program
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Embodiment Construction

[0031] This specific embodiment provides a clamper for a rock bolter. The drill rod is always located in the circle enveloped by a plurality of sliders of the clamper during the entire working process. When the drill rod is deflected, due to the Constraints for the drillpipe that return the drillpipe to the center position. The specific embodiment also provides a rod drilling machine including the above-mentioned holder.

[0032] Hereinafter, an embodiment will be described with reference to the drawings. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solution of the invention described in the claims.

[0033] see Figure 2-Figure 7 , A clamper provided in this specific embodiment includes a fixed bracket 11, a slider bracket 12, a slider 13 and a driving device.

[0034] Wherein, ...

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Abstract

The invention discloses a roofbolter and a gripper thereof. The gripper comprises a fixed support, a slide block support, at least three slide blocks and a drive device. The fixed support is provided with a hollow part. The slide block support is arranged on the fixed support in a rotatable mode. The slide blocks are all hinged to the slide block support and the fixed support. Wheels extending into the hollow part are arranged at the inner ends of the slide blocks respectively. The wheels of the slide blocks have an external common tangent circle. The drive device is used for driving the slide block support to rotate. In this way, according to the gripper of the roofbolter, a drill stem is located in the circle surrounded by the slide blocks of the gripper in the whole working process all the time, and when the drill stem inclines, because of the constraint of the slide block on the drill stem, the drill stem can return to the central position.

Description

technical field [0001] The invention relates to the technical field of drilling rigs, and more specifically, relates to a rock bolt drilling rig and a holder thereof. Background technique [0002] The gripper is an important part of the rock bolter, which mainly plays the role of clamping the drill pipe and preventing it from rotating when the rock bolter is working. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the gripper of the rod drilling rig in the prior art. The operation process of the gripper of the rock bolter in the prior art is: [0004] When the drill rod 3 moves to the middle position of the two clamping guide blocks 2, when the drill rod 3 and the bracket 4 do not deviate, that is, the center of the drill rod 3 is at the center of the circle enclosed by the two clamping guide blocks 2 When in the center, make the two clamping cylinders 1 act at the same time, push the clamping guide block 2 to move to the middle at the same time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/18E21D20/00
CPCE21B19/18E21D20/003
Inventor 包宗明庞恩敬吕后仓史旭春李佳吴洪冲王波
Owner BEIJING CSR TIMES LOCOMOTIVE & ROLLING STOCK MECHANICS
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