Comprehensive dredging machine

Abstract

The invention discloses a comprehensive dredging machine. The comprehensive dredging machine comprises a crawler-free type dredging machine, a hydraulic support, a drilling machine, a scraper conveyor, a runner and the like. The upper end of the hydraulic support is provided with a main top beam, a front canopy, a back canopy and a cross beam; the dredging machine is arranged on a foundation; thefront and rear ends of the foundation are provided with a slope regulation jack respectively; one end of a front pushing and pulling jack is connected with the foundation of the dredging machine, andthe other end of the front pushing and pulling jack is connected with the hydraulic support; the rear of the dredging machine is provided with a self-advancing jack, and two sides of the foundation are provided with a side push cylinder respectively; and the drilling machine is arranged below the main top beam or the back canopy; and the runner is arranged behind the hydraulic support and is connected with a rear push and pull jack arranged on the hydraulic support by an anchor chain and a pulley. The comprehensive dredging machine has the advantages of parallel operation of hole drilling andsupporting, and coal cutting of a development machine, a roadway turns flexibly, the turning radius is small, the turning speed is high, the tunneling speed is high, and the safety is guaranteed.

Description

technical field [0001] The invention relates to a bolter, in particular to a comprehensive bolter with the functions of digging, transporting, supporting, paving and anchoring integrated. Background technique [0002] At present, there are four methods of roadway excavation in the coal industry at home and abroad: one is to adopt the blasting method to excavate; the other is to use the cantilever type roadheader to excavate; Use above-mentioned four kinds of excavation methods and all need coal seam roof to be relatively stable, especially the third, fourth, only can bring into play its peculiar effectiveness under the firm situation of roof. Since the 1980s, my country has successively introduced foreign cantilever roadheaders, continuous miners and a small number of bolter units. However, when using these three types of roadheaders for tunneling, it is necessary to increase the power and increase the deadweight at the same time. Enhance its stability, and the driving effic...

AI Technical Summary

Problems solved by technology

Drilling and support workers carry the bolter and support materials from the back of the roadheader to the working face to perform work such as bolting, anchoring, manual hanging of metal mesh, and finishing of support. The labor intensity is high, the working hours are long, and the production efficiency is low ( In general, the time for supporting the roof is 2-3 times of the time for cutting coal), and the supporting roof and the tunneling machine for cutting coal cannot realize parallel operation

[0004] 2. Since the support workers work without support (especially when installing anchor plates and laying metal mesh), casualties caused by roof caving and zero-skin collapse occur from time to time

Although individual manufacturers have produced roadheaders with advanced support devices, the problems of low production efficiency, high labor intensity, and insecure safety have not been effectively resolved

[0005] 3. The existing roadheader does not have the function of automatically laying the roof net

[0006] 4. When the existing roadheader, continuous miner, and bolter that travel on crawler belts excavate the uphill roadway, when the inclination angle of the coal seam is greater than 8 degrees, due to the presence of floating coal under the crawler of the roadheader, the coal seam floor is smooth, causing the roadheader to Frequent slippage

[0007] 5. The roadway digging with continuous miner and bolter has the following main disadvantages: (1) Double lanes are required to work alternately, and there are many horizontal holes between the coal pillars, so ventilation management is difficult; (2) Coal seams are required The roof is hard, and the empty roof distance and empty roof time are relatively long, which is unfavorable to roof management; (3) Since there is no function of body tilt adjustment, the triangular coal left on the roof is not easy Cut off, if the triangle coal is kept, it is not conducive to roof management

[0008] 6. Adopting imported ABM-20 bolter mining unit requires a relatively stable roof for roadway digging, but the machine structure is complex, failures occur frequently, and untimely supply of accessories can easily affect production

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