A double-module bolt cutting device

Abstract

The invention discloses a double-module bolt cutting device, which includes a bolt and a box body. The inside of the box body is provided with an emulsion, and the box body is sequentially installed with a lifting cylinder and an anti-cutting device from right to left. Partition board, the upper end of the piston at the end of the lifting cylinder is equipped with a waterproof air motor, and the right end of the box is provided with a saddle seat and an air source adjustment cylinder in sequence from right to left, and the saddle seat is sequentially arranged from top to bottom. It is provided with a concave opening groove and a rectangular hole, and the end of the rectangular nozzle is provided with an ejection end, and the ejection end is symmetrically provided with a rugby-shaped mouth, and the upper side of the rugby-shaped mouth and the side of the rugby-shaped mouth The lower side is symmetrically provided with a central notch, throttling protrusions and edge protrusions from the center to both sides. The invention adopts two modes of water jet cutting and submerged saw blade cutting to carry out underground cutting operation on bolts, which effectively solves the problem of low roadway support efficiency caused by long bolts due to narrow underground space and the like.

Description

technical field [0001] The invention relates to the technical field of design of abrasive water jet mechanical equipment in coal mines, in particular to a double-module bolt cutting device. Background technique [0002] Downhole bolt support is widely used, but in practical application, technicians need to install the bolt to a certain length for cutting. The main method they adopt is to cut the bolt on the well according to a certain length, and then cut the bolt The rod is transported to the designated area underground to complete the support work, but due to the long length of the cut bolt and the limited underground space, this brings great problems to the transportation of the bolt, and the work efficiency is low. If the bolt can be cut underground Effectively improve work efficiency. At present, there are a series of technical difficulties in cutting bolts downhole, such as sparks or open flames cannot be generated during the cutting process. [0003] Abrasive water j...

AI Technical Summary

Problems solved by technology

[0004] However, the existing bolt cutting device does not use the gas source as the core power, does not involve electric control, is especially suitable for underground operations in coal mines, and uses multiple modes to perform underground operations on bolts. It is difficult to effectively avoid the cutting length Longer bolts have low roadway support efficiency due to small underground space, high transportation costs, and long transportation time; some bolt cutting devices cannot use emulsion as the submerged fluid medium to facilitate underground material collection It is beneficial to reduce the rust of the anchor rod; some anchor rod cutting devices are not conducive to the anchor rod and only need to bend a small angle to immerse the cutting part in the emulsion, which is not convenient for subsequent cutting operations; some anchor rod cutting devices are not conducive to Adjust the position of the cutting saw blade inside the box to make the micro-scale bent anchor rod realize the cutting operation in the submerged state. It is not possible to divide the box area to divide the blanking area and the working area, which cannot prevent interference during the cutting process. It is also impossible to prevent the water jet cutting operation from causing the water beam to directly act on the bottom of the box, causing serious consequences of breakdown at the bottom of the box; Falling into the blanking plate, it is difficult to prevent the large deformation of the anchor rod, which makes the use of subsequent support difficult, and cannot effectively avoid the occurrence of the second straightening process of the anchor rod; some anchor rod cutting devices are not conducive to the installation of flexible connections The anchor sleeve is convenient for subsequent adjustment of the position of the anchor in the anchor sleeve, and it is also not conducive to fixing the transverse rectangular channel for the transportation of emulsion; some anchor cutting devices are difficult to adjust the angle of the downward inclination of the anchor sleeve, which cannot prevent the anchor from being damaged. The same bending angle will cause excessive bending deformation of the anchor rod, which cannot limit the horizontal reset position of the anchor rod sleeve; some anchor rod cutting devices are not conducive to increasing the area of ​​the fluid medium in the center cutting area and the medium fluid is in different positions according to the rugby-shaped mouth. Different speeds are produced due to different positions; the knot is not conducive to the speed of the fluid in the center of the rugby-shaped mouth to gradually accelerate to the fluid at both ends of the rugby-shaped mouth, it is difficult to quickly bring the sparks that may be generated by cutting the anchor into the inside of the box and isolate and extinguish them. It is also impossible to speed up the flow velocity of the medium fluid at the end of the rugby-shaped mouth. There is also a bolt cutting device that can neither prevent the large area of ​​waterlogging caused by the jet backsplash nor prevent the water beam from directly cutting through the bottom of the box. Adjusting the position of the bending plate pressed on the anchor rod cannot adjust the bending degree of the anchor rod in the vertical direction, and it is difficult to make the cutting position of the anchor rod always immersed in the emulsion in the box

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