SU607042A1 - Machine set for under-level excavation of coal - Google Patents

Description

one

The invention relates to the mechanization of excavation of coal by the ground method, in particular, to units for subsurface excavation of steep steep and inclined coal seams,

An aggregate of the subsurface grooves of thick and inclined seams is known, which includes a downhole section of a powered support, a loader movably connected to the downhole section in the longitudinal direction by a tongue-and-groove joint, and cutting edges for destruction of oversize mounted in transverse guides on the bottom of the downhole section and driven by jacks IJ.

The disadvantages of this unit are the inefficient crushing of oversize with the cutting edges of the closures and the narrow front-to-bottom loading front, which leads to large coal losses due to incomplete release of broken mass.

The closest technical solution to the proposed is a mating support, including a downhole section, a loading crane installed with the possibility of longitudinal

movements, and teeth for crushing oversize, mounted on the gates, located on the bottom of the bottom hole section

. In such lining, the teeth improve the crushing conditions of oversize, however, they do not provide high efficiency because they are located on the gates, which have the possibility of only reciprocating movement in the guides on the basis of the downhole section. According to the size of the loading front, the lining is not lutable from the above-described unit. Thus, the lining does not reduce the loss of coal due to the incomplete use of its repulsed mass.

The purpose of the invention is to reduce the loss of coal.

This goal is achieved by the fact that the proposed unit for a sub-floor coal excavation is equipped with a screw loader, which is mounted on the tail end of the reloader and is kinematically connected with it, while the teeth for crushing non-dimensions are fixed on the loaders of the loader.

FIG. I shows the described unit, side view} in FIG. 2 - section A-A of FIG. 1, on. 3 is a view B in FIG. one.

The unit includes a downhole section 1 mechanized 1Nnoy lining, material handler 2. and loader 3. The bottomhole section consists of a table-like base 4 with skis 5, gycroecks 6, overshoot 7 and a shield 8, controlled by hydraulic cylinder 9. It is connected to the root section by means of a hyzrod rods 10. The supercharger 2 is installed with the possibility of longitudinal movement between the skis 5 bases 4. On the tail end of the reloader, I have a bypass head with shaft 11 and sprockets 12 under the scraper chain 13, a loader 3 is installed. It consists of left and right parts, each of which contains a reflector 14 fixed to the wall of the reloader 2 and the screw 16. The screw is mounted to the support 15 and is connected to the shaft 11. The teeth 17 are screwed on the screws of the load carrier to crush non-dimensions.

The loader 2 and the loader 3, rigidly fastened to each other, are connected by means of hydraulic cylinders 18 of the feed with the downhole section. (If the reboiler 2 is not located along the axis, but on the side of the downhole section 1, the loader 3 may contain only one left or right; the left part, which includes a reflector with a support and an auger).

The unit works as follows.

In the initial position, the downhole cejunifl 1 is located at the gateway junction site. Hydraulically 6 hull rim cross 7 and base 4 with skis 5 between the fires and the drift soil. Reloader 2 and the loader 3 are off and in the rightmost position (Figs. 1 and 2). Scroll 8 hangs over the loader 3.

When the coal is blasted, the mass is broken; Lochina is swirled on the soil of the drift in front. downhole section. The augers 16 of the loader rotate the locking device and transport it to the bypass head of the loader 2. Using the scrapers of the scraper chain 13, the coal is loaded onto the loader. Simultaneously with the transport and loading of teeth 17 fractions, oversize coal. As the crushed mass of the coal is removed and the soil is cleaned near the downhole section along the width of the loader 3, the loader and the material handler are moved to the side with the help of hydraulic cylinders 18 of the feed. After the release of the crushed coal mass and the cleanup of the soil at a distance equal to the feed amount, the loader and reloader using hydraulic cylinders 18 are pulled to the bottomhole section. Then; the thrust and borehole section is removed along with the loader and the loader using jacks 10 moves along the roadway towards Korea

section (not shown) on the step of shifting the unit. After this, the next work cycle begins.

The screw loader in the unit increases the loading front of the broken mass of coal. The location of the teeth on the loader augers increases the efficiency of the crushing of oversize. As a result, the volume of the broken mass, coal increases, losses are reduced and fire risk is reduced.

Claims (1)

1. USSR author's certificate No. 428089, cl. E 21 S 23/00, 1974. 2, USSR author's certificate No. 395583, cl. E 21 B / Zb, 1973.