SU899990A1 - Power roof support for matching mine workings - Google Patents

Description

(54) MECHANIZED STRESS STRIPPING

one

The invention relates to mining, in particular, to mechanized lava support with a drift.

The known mechanized lining of the mating consists of sections, including bases, floors, a spacer, and pivotal traverses 1.

However, such a lining structure does not ensure the stability of the roof and soil along the edge of the interface of lava with a drift.

Closest to the proposed technical solution is the mechanized lining of the mating, which includes drift sections with a hydraulic jack, their movement and berm section, containing a base, hydrorack and overlap, which is connected by means of a rotary traverse with berm overlap and with one of the drift sections 2.

However, this support does not eliminate the turn of the overlaps and bases of the berm sections, the sliding of the sections along the dip of the seam and the violation of the integrity of the roof and soil.

The purpose of the invention is to increase the efficiency of maintaining the roof in the area of the interface between the lava and the drift.

The goal is achieved by the fact that the linkage of berm overlap traverses is made in the form of blind grooves in the berm overlap and ball pins, which are fixed on the crossheads and are installed in

5 deaf grooves, and with a liner section - in the form of floating hinges, each of which is made of a body having a horizontal opening with a tapered groove to accommodate the end of the crosshead,

Q with stop, and ball bearing for installation on the drift section.

FIG. Figure 1 shows the mating support, general view; in fig. 2 is a view A of FIG. one; in fig. 3 is a plan for the movement of support (starting position); in fig. 4 - the same

15 movement of the drift section; in fig. 5 same, the movement of the berm section; in fig. 6 is a section BB in FIG. 3; in fig. 7vid B in FIG. 2 with a partial cut.

Mechanized support mating

2D includes a drift section 1 and 2 with a hydraulic jack for their movement, a berm section 3, which is connected to one of the drift sections by means of rotary traverse 4, bearing a berm overlap on itself 5. The left end of the traverse is connected to

overlapping the berm section by means of a hinge 6 interacting with the upper support of the hydraulic rod 7 mounted on the base 8, and the right end of the crosshead is installed in the floating hinge 9 made in the form of the housing 10 with the ball head 11 placed in the support 12 which is mounted on the frame one from schtrekovy sections. The frames of the drift sections are made of beams 13 and 14 connected by hydraulic rails with bases 15 and 16. Traverses are equipped with ball pins 17, which interact with the blind grooves 18 of the berm section. The end of the crosspiece 4 has an abutment for limiting its movement, made in the form of an insert 19 or a cover 20, and is placed in a horizontal opening with a conical groove 2 of the housing 10.

Mechanized lining mating works as follows.

When moving, for example, the splitting section 2, the right ends of the cross member 4 are turned around the hinges 6, which do not change their spatial position due to the thrust forces developed by the hydraulic legs 7 of the berm section 3. At the same time, the forces of the jack of movement of the 2 section floating hinge 9 and the right ends traverse 4 rotates around support 12 at an angle ot. defined by the step of moving section 2. Increasing the length of traverse 4 is compensated for by moving the end of traverse 4 to the abutment of the insert 19B and the cover 20 - in the right end of the body of the floating hinge, as well as by turning the floating hinge relative to the support 12.

Rotate the traverse 4 in the vertical plane in case of uneven ground drift provide the tapered groove 21 floating hinges and turn them relative to the rack 12 up or down.

In the process of turning the right ends of the traverse 4, the ball fingers 17 act on the front walls of the deaf grooves 18 and move the tops of the overlap of the 5 berm section towards the slaughter. Moving the ball pin 17 along the groove 18 to the left compensates for changes in the lengths of the cross arms at a predetermined position of the overlapping tops. As a result, the curvilinear displacement of the traverse is converted into a rectilinear motion of the tops of the berm section.

After moving the drift section 2 and turning the right ends of the traverse 4, the berm section 3 is moved. The movement is carried out by means of a hydraulic jack that interacts with the base 8 of the section and the conveyor stand, or by means of the movement of the head and the conveyor stand.

During the movement of the berm section 3, the left ends of the yoke 4 are turned relative to the hinge 6, while the fingers 17 move from the left to the right position along the grooves 18 of the upper 5 and move the upper walls to the slaughter line on the front wall of the blind grooves. The compensation of the lengths of the traverse is accomplished by returning the floating hinge and the right end of the traverse to its original position. As a result, as in the first case, the turn of the traverse is converted into a rectilinear movement of the upper overlap of the berm section without changing their spatial position. Then the cycle repeats.

Such an embodiment of the support mating ensures the elimination of the causes contributing to the decrease in the stability of the roof and the soil in the interface area;

The overlap and bases of the end sections in the interface zone eliminates the impact of the creeping forces and the efforts of the end sections spreading on the roof and soil section and the possible crushing of these areas or destruction at an angle of repose.

Claims (2)

1. USSR author's certificate No. 273127, cl. E 21 D 23/00, 1968. 2. USSR author's certificate No. 359412, cl. E 21 D 23/04, 1971 (prototype). - ..//y. LU, (F. Srig.1 13J FIG. 2 .- / g s rtlfTi / f Fy FIG. J IS F1 / (g. 6