SU483529A1 - Safety lining - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to mining. Known safety lining, comprising tops, connected by a hydraulic jack of lifting, and purlins.

A disadvantage of the known cantilever safety support is the high laboriousness of its work on shifting and erection.

The purpose of the invention is to reduce the complexity of the work on the shifting and the erection of lining.

To do this, in the proposed support, the purlins are made in pairs with hinged-sliding doors with sliding axles and fixed on two spacer hydraulic tops.

For the purpose of mutual displacement (spacing), the runs can be made with a slit slot for moving the sliding axis.

FIG. 1 shows the proposed safety lining and a section along AA; in fig. 2 - lining in the mine workings.

Non-protective lining consists of two hydraulic expansion tops 1 and 2, each having two pointed shtok, two pairs of hinged-sliding gaps 3 and 4, which can perceive the pressure of the roof rocks of the excavation and transfer it to hydraulic expansion tops 1 and 2 through puff 5 .Hydraulic expansion heads 2

The ki are able to freely move along the surface of the hinged-sliding girders 3 and 4 and fix on their middle with the help of the stoppers 6. Sliding axles 7 connect the hinged-sliding girders and freely move in their slits. The lifting of the top permanent supports is carried out by the grippers 8 welded to the tops 1 and 2.

For lifting and moving the runs 3, 4 relative to each other, there is a hydraulic jack 9 knobs, which are hinged to the lugs 10 of the tops 1 and 2 by means of oval holes.

The support operates as follows.

The initial position of the roll corresponds to the position when both the hydraulic expansion caps 1 and 2 are cut by their

sharpened stocks in the sides of development. The hinged and sliding runs 3 and 4 support three top fixed supports 11, and the hydraulic jack 9 of the lift is in the working position (Fig. 2).

After the bottom is pushed in, both pointed rods of the top 1 and the jack of the hydraulic jack 9 of the lift are removed, and the purlins 3 hang on the sliding axles 7. After releasing the stoppers 6, the upper to 1 passes into the toren, the articulated sliding purlons 3.

The hinged and sliding girders 3 and 4 form an acute angle, after which the upper to 1 pointed shafts are inserted into the sides of the excavation, the hydraulic lifting jack 9 begins to move apart, and due to the free running in the holes of the lugs 10, a kink occurs.

At this time, both rods enter the body of the top 1, and the purlins 3 on the sliding axles

7 Shuffle: come in rounds 4 runs to the right to failure. Then the hydraulic jack of the lift is contracted; it goes up and the upper to I is fixed by the stoppers 6 on the opposite side of the hinged-sliding girders 3. On the grippers

8 is laid top to the permanent lining 11

and is raised by a hydraulic jack 9 lifting to the roof of the excavation. Upper to 1, with the help of rods, spreads out into the sides of the excavation.

During the subsequent cycle of the safety support, the hydraulic expansion upper is cleared to 2, the hydraulic lifting jack 9 is unloaded, the stoppers 6 come out of their sockets, and the hydraulic expansion upper to 2 and the hinged-sliding girders 4 hang on sliding axes 7. The cycle repeats.

Subject invention

Claims (2)

1. Safety lining, containing tops connected by a hydraulic jack of the lift, and purlins, characterized in that, in order to reduce the laboriousness of the work of shifting and erection of the lining, the purlins are made in pairs with hinged-sliding and sliding axles and fixed on two hydraulic top kah. 2. A support according to claim 1, characterized in that, for the purpose of mutual movement (extension), the runs are made with slots for moving the sliding axis. 7 5 eight } .tl f .,. )