SU945459A1 - Power roof support unit - Google Patents

Description

(54) SECTION OF MECHANIZED STRIP

one

The invention is fire-retardant to mining, specifically to shaft-mounted fortifications.

A known mechanized support section, comprising an overlap, a hinge connected to the fence, a cantilever top to beams, interconnected by a bracket and connected to the rear part of the overlap, hydraulic struts and a base (1.

The disadvantage of this section of the lining is a significant exposure of the roof as it moves.

The closest to the invention in its technical essence and the achieved result is the mechanized support section, including the overlap installed in its pull-out top guides, power. a hydraulic cylinder connecting the upper to the overlap, a base located between the overlap and the base of the hydraulic post, fencing-20, rjagi, traverse, traveling hydraulic jacks connecting the section with the conveyor.

The section is moved with support, the section being pulled to the previously Extended top having special tongs interacting with the roof 2.

However, this method does not reliably fix the upper to from movement in the direction of the goaf.

The purpose of the invention is to increase the reliability of movement of the section with overhead.

This goal is achieved by the fact that the upper overlap is made with through longitudinal holes, and the pull-out top cantilever tabs protruding into the apertures and are equipped with shlrnarny fixed on protrusions supporting racks installed with the possibility of their fixing on the conveyor.

Claims (2)

FIG. 1 shows a section of the lining in the lava after the passage of the excavation maschine, side view; in fig. 2 - the same, after moving its sliding top, side view; in fig. 3 - overlap with the top panel, plan view; in fig. 4 - lining overlap, plan view; in fig. 5 shows section A-A in FIG. 3. 39 Sec1 {and mechanized roof supports include a retractable top, made in two beams 1, connected by a visor 2 and idle console ledges 3, to the hinges 4 of which are attached by rods 5 power hydraulic cylinders 6. 6. The last hinges 7 are attached to the ceiling 8, provided with guide grooves 9 and through longitudinal holes 10. The upper beams are installed in the guide grooves 9 of the ceiling, with the cantilever protrusions 3 entering into the holes 10 of the ceiling. Supporting hydroracks 12 are attached to the hinges II of the cantilevered protrusions 3, the rods 13 of which are connected by the hinges 14 to the tides 15 of the conveyor section 16. The inclination of the supporting girders 12 in the vertical plane can be changed by the hinged Hk attachment. Supporting hydraulic rails when they are detached from the conveyor can be used for fastening by means of cuts 17 of the slab 18. The overlap 8 is connected to the base of the lining section 19 by means of the fence 20, levers 21, cross member 22 and the hydraulic rails 23. movement is associated with section 16 of the conveyor. In the initial position (Fig. 1), after the passage of the combine and the mounting of the support section, supporting the hydraulic legs, detached from the conveyor, are installed for fastening the cuttings 17 from the collapse. After cleaning the machine road, the conveyor is moved. Before the passage of the harvester during the next cycle of excavation, coal supporting hydraulic strikes are retracted from the bottom and installed on a shayer. After the passage of the combine, the top is delivered to the bottom by force hydrocyls & 6 ml and unstuck 11. The remaining elements of the section are moved by hydraulic cylinders 6 and hydraulic jacks 24, and the roof supports are fixed by supporting hydraulic posts 12, unscrewed between the sliding top and the conveyor. After the movement of the section has been completed, the support of the hydroforks 23 is thrust, the hydraulic posts 12 are unloaded and they fix the coal flank. The use of the proposed lining section will increase the efficiency of mechanized excavation in seams with weak roofs. Claim section a conveyor, characterized in that, in order to increase the reliability of movement of the section with an overhead, the overlap is made with through longitudinal openings, and the sliding top with cantilever projections, d conductive in openings and provided with a hinged on supporting ledges gidrostoykami mounted with the possibility of fixing on the conveyor. Sources of information taken into account during the examination 1. USSR author's certificate No. 443997, cl. E 21 D 23/00, 1973. 2. Author's certificate of the USSR N 542002, cl. E 21 O 23/06, 1974 (prototype). "I 3 at Phie.