Safety clutch for drilling machine

Abstract

The invention relates to a safety clutch for a drilling machine. The safety clutch is characterized in that an output shaft is installed and fixed in the central part of the exterior of a combining sleeve, an inner gear ring is installed and fixed in the right port part of the combining sleeve, a friction disk is installed at the middle of the inner gear ring through an outer gear ring on the excircle, a driving disc is arranged between the friction disc and the combining sleeve, friction blocks are arranged in through holes uniformly distributed in the circumferential direction on two side faces of the driving disc, the left end of a driving shaft passes through the middle hole of the friction disc and is fixedly connected with the center of the driving disc, an adjusting nut is installed on the driving shaft, a plurality of blow-like springs are installed on the driving shaft between the adjusting nut and the friction disc, and a driving gear is fixed and installed on the driving shaft through a key. Besides the safety protection function, the safety clutch for the drilling machine provided by the invention further has the advantages of simple structure, lower failure rate and reliable work.

Description

technical field [0001] The invention relates to a coal mine drilling rig, in particular to a safety clutch of a coal mine drilling rig, and belongs to the technical field of coal mine drilling rigs. Background technique [0002] At present, there is generally no safety protection device between the power output and the working mechanism of the underground drilling rig in coal mines. During the working process, the drilling rig often encounters difficult-to-drill materials or other accidents, so the drill bit often breaks. And damage other serious failures of the transmission system, although in the prior art, an overload protection type clutch is also arranged in the working mechanism and the power output mechanism of the drilling rig to realize the purpose of safety protection, but this type of overload protection clutch generally has a complex structure, Defects with high failure rate and unreliable work. Contents of the invention [0003] The purpose of the present ...

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Problems solved by technology

[0002] At present, there is generally no safety protection device between the power output and the working mechanism of the coal mine underground drilling rig, because the drilling rig often encounters difficulties in drilling material or other accidents, so the drill bit will often be broken and other serious faults will be damaged in the transmission system. Although, in the prior art, an overload protection clutch is set in the working mechanism and power output mechanism of the drilling rig to realize safety protection However, this type of overload protection clutch generally has the defects of complex structure, high failure rate and unreliable operation.

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