SU1484966A1 - Temporary support for development working - Google Patents

Description

The invention relates to mining, namely, temporary supports for preparatory workings. The goal is to increase the efficiency of maintaining the roof in the ongoing preparatory development by ensuring the movement of temporary lining to the bottomhole with constant overlapping of the ceiling. The support consists of sections 1, 2 and 3. Each section 1-3 contains overlapping 4, spring stop 5, spacer springs 6, spring support 7, hydraulic jacks 8, guide sleeves 9, hinge joints 10 for fastening the hydraulic jacks 8 to the bases 11. Movement mechanism sections made in the form of elastic cylinders 12-15, laid on the perimeter of the ceiling in the cavities 16. The latter are formed by the walls 17 and 18 of the corrugation and the edge 19. The mechanism allows alternately moving sections 1-3 lining without removing the overlap. Spacer springs 6 provide a change in the height of the lining during its movement in accordance with local changes in the height of generation. 3 il.

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1484966

1484966 The invention relates to mining, namely, temporary supports for preparatory workings.

The purpose of the invention is to improve the efficiency of the maintenance of the roof in the ongoing preparatory development by ensuring the movement of the temporary lining support at a constant overlap.

FIG. 1 shows a temporary support, side view; in fig. 2 - section A — A in FIG. one; in fig. 3 - section B — B in FIG. one.

Temporary support for preparatory workings consists of a head section 1, a linear section 2, the number of which is determined by technological need, and an end section 3. Each section contains an overlap 4, a spring stop 5, spacer springs 6 (the number of which is determined by the required pre-expansion force of sections 1— 3), spring support 7, hydraulic jacks 8, guide sleeves 9, swivel assemblies 10 securing hydraulic jacks 8 to bases 11. The support also has elastic cylinders 12–15, which are pairwise common to two adjacent sections. This is achieved by the fact that the cylinders are laid around the perimeter of the overlap in the cavities 16 formed by the walls 17 and 18 of the corrugation, made at the downhole end of the overlap 4 of each section, except for the head section 1, and the edge 19 rigidly attached to the inner surface of the overlap 4 of the adjacent section with side opposite the butt end. The edge 19 is placed between the walls 17 and 18 of the corrugation. On the end section 3 edge is missing.

The support works as follows.

In the initial position of the section 1-3 hydraulic jacks 8 are open to the roof, while the spacer springs 6 have a margin of stretching. The operation to move the lining in the direction of the arrow (Fig. 2) is performed by alternately moving sections 1.3 and 2.

The head section moves first.

1. To do this, compressed air is injected into the cylinder 13, and is released from the cylinder 12. When this cylinder 13 has a force on the edge 19 of the overlap 4 of the head section 1 and the wall 18 of the corrugation of the overlap 4 of the linear section 2. Since the total thrust force of section 2 and 3 is greater than the thrust force of section 1, the resulting force effect of the cylinder 13 is directed only to the edge 19 overlap 4 of the head section 1, which ensures its movement.

Then the end section 3 is moved. To do this, compressed air is injected into the cylinder 14, and it is released from the cylinder 15. The cylinder 14 exerts a force on the edge 19 of the overlap 4 of the linear section 2 and the wall 17 of the corrugation of the overlap 4 of the end section 3. Since the total thrust force of the sections 1 and 2 is greater than the tension of the section 3, the resulting force effect of the cylinder 14 is directed only to the wall 17 corrugation overlap 4 end section 3, which ensures its movement.

The final cycle is the movement of the linear section 2. To do this, compressed air is injected into the cylinders 12 and 15, and is exhausted from the cylinders 13 and 14. When this cylinder 12 has a force on the edge 19 of the overlap 4 of the head section 1 and the wall 17 of the corrugation of the overlap 4 of the linear section 2, and the cylinder 15 - on the edge of the overlap 4 of the linear section 2 and the wall 18 of the corrugation 4 of the end section 3. Since the total force Since the sections 1 and 3 are larger than the efforts of the section 2, then the resulting force effects of the cylinders 12 and 15 are directed respectively to the corrugation wall 17 and the edge 19 of the overlap 4 of the linear section 2, which ensures its movement.

Claims (1)

Claim Temporary support for preparatory workings, consisting of separate sections connected by a movement mechanism, each of which includes overlapping, bases and hydraulic jacks located between the overlapping and the bases, characterized in that, in order to increase the efficiency of maintaining the roof in the ongoing preparatory development by providing propulsion temporary lining to the bottom with a constant overlap of the overlap, lining sections are provided with spacer springs located between the hydraulic jacks and the overlap, and the mechanical m movement of the sections is in the form of elastic cylinders, stacked along the perimeter of the overlap in the cavities formed by the walls of the corrugation formed on the bottomhole end of the overlapping section and the rib provided on the inner surface of the adjacent sections overlap on the part opposite slaughter end, the rib is arranged between the walls of the corrugation. 1484966