SU1186802A1 - Cap of power mine support - Google Patents

Abstract

OVERLAP MECHANIZED STRIPS, including a hard upper, on which from the side of contact with side rocks there is an elastic element, made in the form of a closed volume filled with air, and covered on top with an elastic tape. fixed to the top, characterized in that, in order to increase reliability in operation, reduce the time for shifting and increase the stability of the support, it is made to the top with ribs located along the longitudinal axis of the top, between which are installed elastic elements, embodied in the form of closed sleeves which are provided with sleeves of smaller diameter, installed in their internal cavities, with this one end of the inner sleeve is provided with a fitting for supplying fluid, which is attached to the end of the outer sleeve, and the other (A flax freely, wherein the elastic tape is secured in the intervals between the elastic members to the ribs.

Description

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T The invention relates to mining L. leu and can be used in mechanical supports and other means of controlling rock pressure. The purpose of the invention is to increase reliability in operation, reduce time and for shifting and increase the stability of the support. Pa figs. 1 shows the overlap of the support, on which are placed double closed sleeves, the cross section in FIG. 2 — overlapping of the support when the working fluid is supplied from the additional hydraulic cylinder to the inner sleeve, longitudinal section; FIGURE 3 is a section A-A in FIG. 3; in fig. 4 - the same, when the lining section is open and comes out to the working resistance. The overlap of mechanized roof supports 1g: includes to the top to 1 with the support of 2 hydraulic posts 3 and the ribs 4 (.fig. 1). The height of the ribs 4 is approximately equal to half the diameter of the outer sleeve 5, laid between the ribs 4. The inner sleeves 6 are placed the sleeves 5 and are also made of cut tissue. The outer 5 and outer / tremle 6 sleeves are provided with fittings; 7 and 8, respectively, for the supply and control of the working fluid and compressed air. The Studer 8 serves to supply the working fluid from the additional hydraulic cylinder 9 and is combined with the bottoms of the sleeves 5. The rod 10 of the additional hydraulic cylinder 9 is connected to the pressure 11 and drain 1 lining lines (Fig. 2). The volume of the piston cavity 13 is equal to the total internal sleeves of the 6th section of the lining. The sleeves 5 are covered on top with an elastic band 14, which serves to prevent the hoses from being tampered with and to prevent their damage and abrasion. The tape 14 is fastened to the ribs 4 by flaps 15 and around the perimeter of the corner angles 16 with the help of bolts (Fig. 4). The device works as follows. After moving the support section (fitting 2), the piston cavity of the hydrorack 3 is connected to the pressure side, -j. Ena Fio (not shown). At the same time, the rod cavity 10 of the additional hydraulic cylinder 9 is also connected to the pressure line 11 (Fig. 2). Hydraulic 3 begins to move apart, while the upper to 1 with sleeves 5 and 6 laid between the ribs begins to rise and comes into contact with the lateral rocks. When this happens the movement of the piston of the additional hydraulic cylinder 9 under the action of the working fluid supplied under pressure from the pressure line. The piston, moving, displaces the working fluid from the piston cavity 13, which fills the internal sleeves 6. The volume of the piston cavity is equal to the total volume of the sleeves 6 laid between the ribs 4 of the overlap. Under the action of the working fluid, the sleeves 6 are filled and increase the air pressure in the sleeves 5, thereby increasing the resistance reaction, due to which there is an increase in pressure in the rod cavity of the hydroresistance 3 up to the working one. As the lateral rocks move, there is a further increase in the support resistance. In this case, the sleeves 5 are deformed (Fig. 4), and at the same time they are also a damping device that senses dynamic effects from the side rocks. The contact surface of the arms 5 covered with elastic tape 14 is 55-70% of the total floor area, which prevents crushing of lateral rocks by overlapping due to lower specific pressures on lateral rocks. Before shifting, the working fluid is supplied to the rod cavity of the hydraulic column 3, and the piston cavity of the hydraulic column 3 and the rod cavity 10 of the additional hydraulic cylinder 9 are connected to the drain line 12. At the same time, the working liquid from the sleeves 6 is displaced into the piston cavity by the pressure of air in the outer sleeves 5 additional hydraulic cylinder 9. Hydraulic post 9 is reduced, the overlap is lowered and the sleeves 5, coating 14, lose contact with the side rocks. The krpi section is moved and the d-hpe cycle of operation is repeated. ".L Yu. P Naporna O.G maktra / l On smv 2

Claims (1)

OVERLAPPING OF THE MECHANIZED FASTENERS, including a rigid top, on which, from the side of contact with the side rocks, an elastic element is placed, made in the form of a closed volume filled with air and covered with elastic tape on top. fixed on the top, characterized in that, in order to increase reliability in operation, reduce time for shifting and increase the stability of the lining, the top is made with ribs located along the longitudinal axis of the upper, between which are installed elastic elements made in the form of closed sleeves, which are equipped sleeves of a smaller diameter installed in their internal cavities, while one end of the inner sleeve is equipped with a fitting for supplying fluid, which is fastened to the end of the outer sleeve, and the other is mounted Bodnya, wherein the elastic tape is secured in the intervals between the elastic members to the ribs. SU.,., 1186802 Photo 1