Temporary support equipment for tunneling face in underground coal mine

Abstract

The utility model relates to temporary support equipment for a tunneling face in an underground coal mine and can effectively solve the problems of high safety risk of temporary support of the tunneling face in the underground coal mine and low working efficiency. The technical scheme for solving the problems is as follows: the temporary support equipment comprises three vertical and upward support frames, hydraulic cylinders, anchor rods and forepoling beams, wherein the three support frames are distributed uniformly; the anchor rods are uniformly distributed in the circumferential direction of the support frames; the lower parts of the anchor rods extend out of the support frames; joists are transversely mounted at the lower ends of the three anchor rods in the middles of the upper parts of the support frames; the symmetrical forepoling beams are arranged in sliding channels which are formed by the joists and the support frames and perpendicular to the joists; the hydraulic cylinders are mounted in the forepoling beams in parallel through connecting devices; fixing hooks are arranged at the end parts of the piston rods of the hydraulic cylinders. The temporary support equipment is novel and unique in structure, simple, reasonable, convenient to operate, light in weight, high in working efficiency, safe, reliable, and good in use effect, and can bring good social and economic benefits.

Description

Temporary support for drivage face equipment under coal mine

Technical field

The utility model relates to coal mining equipment technical field, particularly temporary support for drivage face equipment under a kind of coal mine.

Background technology

China's big gun pick, fully mechanized workface do not have the temporary lining equipment of automation for a long time, the statistics of whole nation State owned coal mine roof accident shows, the death toll that driving face roof accident causes accounts for 20% of the total death toll of national coal mine lower roof plate accident.Through years development, developed at present polytype temporary lining equipment, by form of structure difference, mainly contain: forestope temporary lining, timbering machine, automatic moving type tunnel support and airborne anchor rod drilling machine etc.; By purposes difference, mainly contain and be applicable to big gun pick and be applicable to fully mechanized workface; By move mode difference mainly contain manually and hydraulic pressure oneself move two kinds of modes.

At present, under coal mine, certain measure has been taked in temporary support for drivage face aspect, and guaranteed to a certain extent the safety of driving face, but what mostly use at present is the temporary lining of manual moving type protected type, install and move temporary lining normally empty top operation, can have certain potential safety hazard unavoidably.For solving workman, install the unsafe problems of temporary lining under sky top, easy front canopy support has been made in many collieries by oneself.Front canopy support is exactly below the back timber of tunnel permanent support, to install two metal forestopes, tunnel after a segment distance, forestope is released to driving face, between forestope and top board, with plank, the chock back of the body in fact, under forestope shielding, gone out the operations such as cash, frame canopy.Forestope is relatively simple for structure, only needs to visit beam with two metals, and four hanging beam devices and a lumps of wood form.This supporting structure is simple, easy to manufacture, not high to back conditional request, has solved the problem of people's operation protection under sky top, operates more conveniently, and support can singly not account for circulation timei.But due to its structural problem, often need manually at driving face, to operate, have the potential safety hazard of empty top operation, be prone to accidents, and efficiency is not high.Therefore, its improvement and bring new ideas is imperative.

Summary of the invention

For above-mentioned situation, for overcoming the defect of prior art, the object of the utility model is just to provide temporary support for drivage face equipment under a kind of coal mine, can effectively solve under coal mine temporary support for drivage face potential safety hazard large, ineffective problem.

The technical scheme that the utility model solves is, comprise support, hydraulic cylinder, anchor pole and forestope, support has uniform vertically upward 3, support is along being circumferentially evenly equipped with anchor pole, support is stretched out in the bottom of anchor pole, and joist transverse horizontal is contained in the lower end of 3 anchor poles in the middle of support top, between joist and support, forms in the sliding channel perpendicular to joist and has symmetrical forestope, hydraulic cylinder is contained in forestope through linkage is parallel, and there is fixed hook the piston rod end of hydraulic cylinder.

The utility model novel structure is unique, advantages of simple, and easy to operate, lightweight, operating efficiency is high, safe and reliable, and result of use is good, has good society and economic benefit.