Adjustable pay-off device for underground roadway

Abstract

The invention relates to a mining underground tool and particularly relates to an adjustable pay-off device for an underground roadway. The device comprises a hole formed in a wall, a bearing cylinder installed in the hole, an inserting rod capable of being inserted into the bearing cylinder in a matched mode and an adjusting type base connected with the inserting rod, wherein the adjustable seat comprises a chassis, a bottom column, a shaft sleeve, a rotating shaft, a laser sleeve and a laser pen. After the plane position of the chamber and coordinates of all the characteristic sections are measured, a hole is formed in the wall directly facing the chamber needing lofting, and the axis of the hole coincides with the center line of the chamber; when paying off is needed, the insertion rod is inserted into the bearing cylinder; after the left-right position, the rotating angle and the pitching angle of the laser pen are finely adjusted, the laser pen is turned on and then indicates all the time; operators do not need to repeatedly hang wires in a room, correction is not needed, repeated paying-off work is avoided, and construction efficiency under a mine is improved.

Description

technical field [0001] The present application relates to a downhole tool for mining, in particular to an adjustable wire pay-off for an underground roadway. Background technique [0002] Existing mine mining, especially underground mining, has arduous measurement tasks, among which the task of setting out and measuring is relatively large, and the geological conditions of the access mine room are very poor. , there is not much room for the selection of the instrument. [0003] Use the traditional method to check and level the instrument, input the coordinates, measure the plane position of the mine house, and measure the coordinates of each characteristic section. It takes 40 minutes to check and accept a mine house, which is labor-intensive and requires There are many people, and the people stay in the goaf for too long. At present, the method of smashing wooden piles and dropping wire ropes on the roof has been used to indicate the centerline direction of roadway excavat...

AI Technical Summary

Problems solved by technology

During the daily work, it takes too long to set up and set off the instrument, which does not guarantee the safety of its own technicians, and the setting-out and measurement are too frequent or take too long, occupying underground roads or circulation yards, which will also affect underground production

[0004] Deficiencies: First, the accuracy is poor, and the control error is large through visual recognition of the wire and rope, which can easily cause the project to deviate from the design direction

[0005] Second, the cord is easy to break, and the maintenance workload is heavy

[0006] Third: The number of corrections is frequent, and the centerline needs to be re-controlled every 20 meters. During the measurement task, due to the flying rocks of the blasting and the scraping of the slag discharge forklift and truck after blasting, the wire rope is often broken, and the air is relatively high during the slag discharge. Poor, it is often found that the wire rope is broken during excavation

The minimum roadway height is 4.5m, and the forklift needs to be mobilized to connect the wire rope, which delays the excavation work and increases the maintenance cost

[0007] Fourth: The safety factor is low. For technicians, the task load is too large, causing fatigue and excessive labor intensity. When performing technical guidance work on the underground production face, the longer the time, the lower the safety factor

[0008] Fifth: Frequent maintenance work and repeated setting-out work will affect the production and construction of the working face. Since the underground equipment circulates in the mining room and each working face, the occupation of the road will inevitably cause the equipment to stop, and the construction and excavation process of the working face In the middle, the noise generated by the equipment is relatively large, and the drilling rig needs to be shut down during the technical guidance process

Images