SU1567787A1 - Hydraulic support - Google Patents

Abstract

The invention relates to the mining industry and can be used to fasten cleaning and development workings in the development of steeply dipping coal seams. The goal is to improve the adaptability of the support to the varying width of the excavation. Hydraulic roof supports consist of frames interconnected by flexible couplings 2. Frame 1 is made of two semi-arches / PA / 4, which are hingedly interconnected at the top. Each PA 4 has a parabolic shape and faces the side of the hinge with the second PA with less curvature and the side of the hinge with hydroresistant 7 with a greater curvature. Both PA 4s are connected with hydroracks 7 by shoes 8 having stops 11. The shoes 8 are hingedly connected to each other by means of a cross-section spacer 12 and have longitudinal ribs on the outside. When penetrating the excavation, its fastening is carried out by frames, then the lining can be used as a lining for the clearing. 2 hp f-ly, 8 ill.

Description

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Claims (3)

5 claims 1. Hydroficated roof support containing interconnected frames, each of which is made of two pivots of the Luarca pivots, hydroracks, articulated with semi-arches, and the transverse ties of the roof supports smoothly lower by a predetermined amount, after which the hydraulic jacks and hydroracks of this group frames bursting. After the extraction of the next strip of coal under the hydraulic stands, following the direction of movement of the working face, the support frame and the rod rods of the racks of this frame extend all the way to the coal mass, the process of lowering the arched parts of the support frame group is repeated, only each time a group of 4 frames is involved in a new frame located closer to the place of extraction of coal, and one (the last from the previous group) drops out of the lowering process. Thus, the arched part of each lining frame, to descend to the depth of the removed strip of coal, is involved in the lowering process four times and is lowered each time by a quarter of a step. zi, characterized in that, in order to improve its adaptability ™ to the changing width of the mine, the semi-arches are made parabolic in shape and face the point of articulation between them with lesser curvature, and the point of connection with the hydraulic pillars with more curvature, and the connection of the semi-arches with Didrostoys is made in the form of shoes with stops, pivotally connected to each other by means of a transverse hydraulic jack of a thrust, while the connection between the frames is flexible. 2. Hold on to and with that, executed in 3. Hold on to me with that, shoes p. 1, about l and h that the connection between the form of the rope. p. 2, about t, l and h that the outer surface is filled with the longitudinal u-framea-u Figure 1 5-5 Gg tput.s