SU759724A1 - Powered support section - Google Patents

Description

The invention relates to mechanized supports for steep and inclined coal seams when working out their layered system with strips along the strike with the laying of the goaf.

Known section mechanized lining, including the base, the upper, hydraulic jacks control and shield, consisting of a body and a sliding part of the pen type and connected with hydraulic jacks, upper and base [1].

Known section mechanized lining, containing the base, upper, hydraulic, hydraulic cylinders seal, sealing telescopic shield, pivotally connected to the upper roof by means of guides [2].

The disadvantage of these devices is that the bevels at the ends of the shield create gaps between the shield and lateral rocks, which increase as the section skews or the non-parallelism of the top bar relative to the base increases. When compacting the filling mass, the filling material gets through the slots into the working space, which leads to complications when compacting the filling mass:

2

The aim of the invention is to improve the reliability of the formation of the backfill array.

This goal is achieved by the fact that the sealing telescopic shield is made in the form of separate telescopic beams with stops, which are interconnected by means of transverse beams, and the gaps between the telescopic beams are blocked by means of elastic plates.

FIG. 1 shows the mechanized support section; in fig. 2 is a view along arrow A in FIG. one; in fig. 3 is a view along arrow B in FIG. one; in fig. 4 shows a section B-B in FIG. 2

Section mechanized lining (see Fig. 1) consists of the upper bar 1, base 2, spacer racks 3, jacks 4 advances, those ^{15 of the} timber copy shield 5, jacks 6 seals and guides 7.

The telescopic shield 5 (see Figs. 2, 4) consists of separate telescopic beams 8, interconnected by transverse 2o beams 9 with the help of fingers 10. The gaps between the telescopic beams are overlapped with elastic plates And 12. 12. Each telescopic beam is provided with stops 13 and 14 and elastic plates

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759724

have oblong grooves, with which they are attached to the beams. The guides (see Fig. 4) are included in the corresponding pockets of the upper and bottom.

The work section mechanized support is as follows.

After removal by the shearer of the coal strip ⁵ , the section moves with the help of jacks 4 shifters towards the bottom. The sealing telescopic shield 5 with the help of jacks 6 seals is pulled to the section, after which the space freed behind the shield is laid. ⁰ When the vacated space is completely filled with filling material, the process of its compaction begins by moving it onto it with the help of jacks of the telescopic sealing shield. and

When extending the telescopic sealing shield in the direction of the filling array, the guides 7 extend from the pockets of the upper and slzhan 'and overlap the roof extending between the upper shield and the upper part of the sealing shield and ²⁰ between the lower part of the sealing shield and the ground.

In the process of compacting the backfill array with a sealing telescopic shield, the latter easily, without additional 25 voltages, takes different spatial positions (distortions, screw surfaces, etc.) depending on the different density of the backfill array. Changing in accordance with the skews of the gap between the telescopic beams overlap 30

four

rolled by elastic plates 11, 12, preventing the penetration of backfill particles into the bottomhole space. After each step of moving the section, the cycle repeats.

This design of the sealing telescopic shield allows you to reliably protect the bottomhole space from the penetration of the backfill material at any distortions of the overhead relative to the base and varying thickness of the reservoir or the working layer.

Claims (1)

Claim The mechanized roof support section containing a base, atop, hydroracks, seal cylinders, a telescopic sealing shield pivotally connected to the ceilings by means of guides, in order to increase the reliability of forming a backfill array, the sealing telescopic shield is made in the form of separate telescopic 'beams with stoppers , which are interconnected by means of transverse beams, and the gaps between the telescopic beams are closed by means of elastic plates.