Ball type anchor rod pre-tightening torque rapid installation device

Abstract

The invention provides a ball type anchor rod pre-tightening torque rapid installation device. The ball type anchor rod pre-tightening torque rapid installation device sequentially comprises an inputunit (2), a torque control unit (3) and an output unit (1) in the torque transmission direction, and the torque control unit (3) is fixedly connected between the output unit (1) and the input unit (2). The torque control unit (3) adopts a steel ball structure and is used for applying a set torque to an anchor rod. According to ball type anchor rod fixed pre-tightening torque rapid installation device, the torque control unit is of a single mechanical structure, the structure is simple, operation is convenient, a pre-tightening force applying auxiliary tool does not need to be replaced, and theanchor rod can achieve resin stirring, rapid fixed torque pre-tightening force applying and rapid detection of installation quality; and other accessories assisting in detecting the pre-tightening torque of the anchor rod do not need to be installed on the anchor rod, the effective supporting length of the anchor rod is effectively increased, then the installation quality of the roadway anchor rod can be greatly improved, and the stability of roadway surrounding rock is improved.

Description

technical field [0001] The invention relates to the technical field of anchor rod support, in particular to a ball-type fast installation device for fixed pretightening torque of an anchor rod. Background technique [0002] Coal mining is a special and highly dangerous industry. With the increase of mining intensity and mining depth, roadway support management becomes more and more difficult. As far as the bolt support of the current coal mine roadway is concerned, there are still many problems in the existing bolt installation: under the use conditions of the existing bolter, the bolt installer used only plays its function of stirring the resin, but cannot fully To give full play to the fastening function, it is not possible to apply a quantitative and controllable torque, which causes the site to judge the installation quality of the bolt according to the construction experience, and then use a torque wrench to manually inspect it sequentially, and the unqualified bolt is ...

AI Technical Summary

Problems solved by technology

As far as the bolt support of the current coal mine roadway is concerned, there are still many problems in the existing bolt installation: under the use conditions of the existing bolter, the bolt installer used only plays its function of stirring the resin, but cannot fully To give full play to the fastening function, it is not possible to apply a quantitative and controllable torque, which causes the site to judge the installation quality of the bolt according to the construction experience, and then use a torque wrench to manually inspect it sequentially, and the unqualified bolt is manually tightened twice , or use a pre-tightening device such as a torque multiplier to apply it. On the one hand, the bolt installation process is complicated and the operation is cumbersome, which seriously affects the construction speed, increases the labor intensity of the workers, and is inefficient. On the other hand, the torque multiplier is in When the maximum torque of the rock bolter is reached, it will suddenly stop, which will give the operating workers a huge instantaneous reaction force, which may easily cause personal injury accidents

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