Collapse preventing mechanism for rock burst roadway anchor rod

Abstract

The invention discloses a collapse preventing mechanism for a rock burst roadway anchor rod. An energy absorption part is used for conducting energy absorbing on ejection energy of a first torque nut,and first-class collapse prevention is achieved. Then part of residual energy acts on a second torque nut, and second-class collapse prevention is achieved. If second-class collapse prevention fails,a suspension pulling part and a speed reduction part are used for consuming residual energy of an anchor rod, an energy absorption part, the first torque nut and the second torque nut. In addition, the suspension pulling part, the anchor rod and the speed reduction part form a triangular stable structure. When the anchor rod collapses, overall disengaging of the anchor rod can be effectively controlled, the anchor rod is prevented from collapsing or the collapsing speed of the anchor rod is reduced, three-class collapse preventing is achieved, and therefore the phenomenon that the anchor rodand the torque nuts collapse and hurt people can be effectively avoided, and the safety of workers is improved.

Description

technical field [0001] The invention relates to the technical field of coal mine safety mining, in particular to a ground pressure roadway bolt anti-collapse mechanism for a rock burst roadway. Background technique [0002] Roadway is the area where rock burst occurs the most. According to incomplete statistics, it accounts for more than 80% of the occurrences of rock burst. When rock burst occurs, it often causes serious damage to roadway, equipment damage and even casualties. People often pay attention to how to prevent major accidents caused by ground pressure, but at the same time, the injury accidents caused by bolt ejection cannot be ignored. When the force on the bolt is suddenly loaded, the force on the bolt and the torque nut will suddenly exceed The strength of the support. When the anchor rod and torque nut still have residual load or energy, the anchor rod and torque nut will suddenly eject, which is easy to cause injury to the operator. Contents of the invent...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-collapse mechanism for ground pressure roadway bolts to solve the problem that when the bolts and torque nuts still have residual load or energy, the bolts and torque nuts will be ejected suddenly, which is easy to cause injury to the operators. question

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