Roof bolter and drill pipe clamp

Abstract

The invention provides a drill pipe clamp. The drill pipe clamp comprises a movable clamp, wherein the movable clamp comprises a retainer of which the middle part is provided with a drill pipe through hole, and a slip arranged in the retainer; a slip body sliding along the opening direction of the drill pipe through hole is arranged at the clamping end of the slip in a sliding way; an elastic reset device for driving the slip body to restore to an initial sliding position on the slip is arranged between the slip and the slip body. The slip body can slide along the drill pipe through hole, namely, the length direction of a drill pipe; during rotary detachment of the drill pipe, the slip body can be driven to slide on the slip through the extension of the drill pipe in the length direction, so that moment of the dynamic clamp on the drill pipe in the length direction is unloaded; after detachment, the elastic reset device is used for restoring the slip body to the initial sliding position after sliding of the slip body, so that the stability of the clamping position of the slip body is ensured in each drill pipe clamping process, a certain sliding allowance is preserved between the slip body and the slip, and the safety of equipment is enhanced. The invention further provides a roof bolter.

Description

technical field [0001] The invention relates to the technical field of rock bolters, and more specifically, relates to a rock bolter and a drill pipe holder. Background technique [0002] Anchor drilling rig is a kind of engineering drilling rig, which is suitable for foundation pit support, anti-floating piles, slope treatment, etc. After drilling, anchor rods and anchor cables can be inserted for reinforcement. When the rock bolter is working, because the length of each drill pipe is limited, it is necessary to install the drill pipe during the drilling process, and to disassemble the drill pipe when lifting the drill, so the rock bolt machine needs to be equipped with a device for clamping the drill pipe . [0003] The gripper of the rod bolter is a mechanism for clamping the drill pipe. It is divided into movable tongs and fixed tongs. The fixed tongs clamp the drill pipe, and the rotating movable tongs can rotate the drill pipe to unload the drill pipe. There are rough...

AI Technical Summary

Problems solved by technology

Therefore, when the drill pipe is disassembled, the dynamic clamper will generate a moment along the direction of the drill pipe, which will cause slippage between the slip structure and the drill pipe on the part of the clamper that is in contact with the drill pipe, or cause the dynamic clamp The cracking of the weld seam of the holder and the damage to the sealing of the oil cylinder and other consequences

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