Hole depth measuring device on anchor rod trolley

Abstract

The invention relates to the technical field of tunnel drilling measurement, in particular to a hole depth measuring device on an anchor rod trolley. The device comprises a measuring mechanism, which is used for measuring the depth of an anchor rod hole and comprises an outer cylinder and an inner cylinder with length scales, wherein one end of the inner cylinder is inserted and slidably connected in the outer cylinder; a soot blowing structure, which is arranged on the side wall of the outer cylinder, wherein the inner cylinder is pneumatically connected with the soot blowing structure, and the soot blowing structure blows away dust adhered to the outer side wall of the inner cylinder under the driving of the inner cylinder; and a slag removing and dredging mechanism, which is arranged at one end, located outside the outer cylinder, of the inner cylinder, and is used for conducting dredging and slag removing on the measured anchor rod hole. According to the hole depth measuring device on the anchor rod trolley, the effect of dredging an anchor rod hole is achieved, protrusions and the like on the inner wall of the anchor rod hole are scraped away, meanwhile, slag accumulated at the bottom of the hole is blown away in an air blowing mode, the slag collection phenomenon is avoided, and therefore the accuracy of anchor rod hole depth measurement is further improved.

Description

technical field [0001] The invention relates to the technical field of tunnel borehole measurement, in particular to a hole depth measurement device on a bolt trolley. Background technique [0002] The bolt trolley is a self-moving device that drills bolt holes in the roof or side of the underground roadway and completes part or all of the bolt installation process. The existing anchor trolley needs to measure the depth of the anchor hole after drilling the anchor hole. Since the inside of the anchor hole is prone to plugging and slag collection at the bottom of the hole, it will cause problems when measuring the hole depth. The large deviation of the measurement results leads to wrong judgments when analyzing the measurement data, which is not conducive to the safety and reliability of bolt support. In view of this, we propose a hole depth measurement device on the bolt trolley. Contents of the invention [0003] The object of the present invention is to provide a hole d...

AI Technical Summary

Problems solved by technology

The existing anchor trolley needs to measure the depth of the anchor hole after drilling the anchor hole. Since the inside of the anchor hole is prone to blockage and slag collection at the bottom of the hole, it will cause problems when measuring the hole depth. The deviation of the measurement results is large, which leads to wrong judgments when analyzing the measurement data, which is not conducive to the safety and reliability of bolt support. In view of this, we propose a hole depth measurement device on the bolt trolley

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