Drill pipe telescopic type buffer device for down-the-hole drill gyrator

Abstract

The invention provides a drill pipe telescopic type buffer device for a down-the-hole drill gyrator. The drill pipe telescopic type buffer device comprises a drill pipe telescopic sleeve assembly, the rear end of the drill pipe telescopic sleeve assembly is adaptively mounted at the gyrator output gear shaft end, and the front end of the drill pipe telescopic sleeve assembly can be connected with a drill pipe through threads. The drill pipe telescopic sleeve assembly comprises a connecting disc, an expansion sleeve, a locking nut, a telescopic sleeve, a telescopic joint, a shock-proof rubber mat and an air guiding pipe. By means of structure matching of the connecting disc, the expansion sleeve, the locking nut, the telescopic sleeve, the telescopic joint, the shock-proof rubber mat and the air guiding pipe, the drill pipe telescopic type buffer device has the dual buffering effects of air buffering and shock absorption through the shock-proof rubber mat, counter impact force of the drill pipe on a gear shaft is effectively relieved, the gyrator gear shaft and a gyrator bearing connected with the gyrator gear shaft are protected, and the service life of the gyrator is prolonged; mounting, dismounting and maintaining are facilitated, it is ensured that a down-the-hole drill can be normally used, and cost is reduced.

Description

technical field [0001] The invention relates to the field of down-the-hole drilling machine manufacturing, in particular to a drilling rod telescopic buffer device for the rotator of the down-the-hole drilling machine. Background technique [0002] Down-the-hole drilling rigs are widely used in large, medium and small mines, hydropower, transportation and other earthwork excavation and blasting projects, and can also be used for underwater rock perforation blasting in ports and waterways. [0003] Among them, the gyrator, one of the main components of the down-the-hole drilling rig, is used to provide rotational power and propulsion to the drill rod and the drill bit, and drive the drilling tool to perform rotary impact rock-breaking drilling. [0004] However, the gear shaft of the traditional gyrator is directly adapted to the drill pipe through the adapter sleeve. When the drilling rig is working, the output gear shaft of the gyrator provides rotational power and propul...

AI Technical Summary

Problems solved by technology

[0004] However, the gear shaft of the traditional gyrator is directly adapted to the drill pipe through the adapter sleeve. When the drilling rig is working, the output gear shaft of the gyrator provides rotational power and propulsion to the drilling tool, while the output gear of the gyrator And the matching bearings must bear the extremely high-frequency counter-impact force generated when the drilling tool hits the rock, which may easily cause the gyrator to fail and be damaged, seriously affecting the normal operation of the down-the-hole drilling rig

In addition, the connecting part of the drill pipe and the adapter sleeve will be deformed due to the impact force, making it difficult to connect and unload the drill pipe, increasing labor intensity, and not conducive to maintenance

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