SU20781A1 - Pneumatic parachute for mine cages - Google Patents

Description

The invention relates to safety devices for mine stands, driven by compressed air in the event of a break in the load rope. In the proposed air parachute, the air is compressed by rocking-mounted compressors, driven by pulleys, between which the cargo rope is passed.

In FIG. 1 depicts a general view of a pneumatic parachute; FIG. 2- view of the compressor with a vertical - its section along the axis; FIG. 3-way valve with a partial vertical section of it along the valve axis.

In the pneumatic parachute, two compressors 3 and 4 (Fig. 1) are applied, driven by two pulleys 7, 8 rotating during the descent and lifting of the cage in contact with the cargo cable 15, stretched through the entire shaft of the shaft. The air injected by compressors 3 and 4; In Tsilikdry 2 (Fig. 1) and further through the valve 23 and the compensator 25 into the brake cylinder 29 liters (Fig. 1), connected by 32 and 43 to the brake pads 33 and 44, fixed in slots 34 and 45. Brake brakes 32 and 43 through the shock absorbers 39 and 80 are connected to another pair of brake bars 37 and 48, also having brake feet 36

and 47, mounted in slots 35 and 46 (Fig. 1).

Braking occurs as follows.

When the elevator is operating, a thin cable 64 connected to the lever 67 (Fig. 1) is attached to a rope, not shown in the drawing 1e. In the event of a cable break, the cable b4 is weakened or completely broken, and the released lever 67, having a load 68 at the end, opens the valve 23, as a result of which the air from the cylinder 2 rushes into the brake cylinder 29 and pushes the piston 29 (Fig. 1, acting on traction 32 and 43, brakes the stand on the conductors 65 and 66. With an increase in the air pressure, more permissible, the air, pressing the piston 63 of the cylinder 61, displaces the rod 60, which, taking the lever 56 away, opens the valve 53, due to compressed air enters the cylinder 70. In the latter there is a piston 72, which 71 of which is hingedly connected to the link 9, which in turn is connected via compressors 3 and 4 through the studs 10 and 12 (Fig. 1). The air entering the cylinder 70 moves the piston 72, moves the rod 71, the slide 9 and through earrings 10, 12 rotates the compressors 3 and 4 around the axes 5 and 6, as a result of which the pulleys 7 and 8 move away from the rope 15 and the compressors 3 and 4 cease to rotate (Fig. 1).

In the event of a decrease in pressure, the air entering the cylinder 16 (Fig. 1) pushes the piston 17 and, by means of the spring rod 18, pushes the lever 19, opens the valve of the whistle 22 on the air duct 21.

The housing of the compressor 3 shown in FIG. 2, is suspended by means of an earring 5. A yoke 5a is screwed onto the piston 4a of the compressor, which is an eccentric 6d, driven by the compressor 8 pulley (Fig. 1). During rotation of the pulley 8, and with it the eccentric 6a (Fig. 2), the latter reports translational movement of the yoke 5a. and piston 4 compressor. The isolation valve 23 (Fig. 1) consists of a housing 13 (Fig. 3) with a plug 11th, valve 16a loaded with a spring 15a, and an eccentric 17th, which, when rotated, lift the valve 16th. Air flows from cylinder 2 through pipe 13, under valve 16a, and is released by valve 10e, loaded with spring 9a and moved by turning lever 67.

Cylinders 2 (Fig. 1) have safety valves 55 of the conventional design.

The subject of the patent.

1. A pneumatic parachute for mine stands, characterized in that

To obtain compressed air used in the brake cylinder, two swing-mounted air compressors are used, equipped with pulleys, which cause them to be pressed to the rope through the entire shaft of the shaft and designed to rotate the said pulleys during cell movements.

2. The form of implementation of the parachute described in paragraph 1, characterized in that in order to release the pulleys 7, 8 from the cable 15 specified in paragraph 1 and stop the rocking-suspended compressors 3, 4, when the maximum air pressure in the compressed air receiving tanks 2 is reached , a cylinder 67 communicating with one of the tanks 2 is applied, the piston rod 60 of which 63 is opening / opening the valve 53, injects compressed air through the pipe 13 into the cylinder 70, the piston rod 71 of the spring piston 72 of which rotates the compressors 3, 4 and removes at Suitable od Their action in the pulleys 7, 8, From the aforementioned rope 15.

3.Application to the parachute described in paragraph 1 for giving a signal, in c; learning to reduce the air pressure, a whistle 22 actuated by opening the valve on the air duct 21 by a spring-loaded piston rod 13 of the cylinder 16, which is in communication with the indicated air duct 21 from reservoir 2.

fig 2