SU43624A1 - Safety wedge parachute for mine cages - Google Patents

Description

Cases of the fall of the mine cages due to the break of the hoisting rope, often accompanied by human victims, are well known. To eliminate such accidents, various precautionary measures are currently used, which are expressed in the use of brake devices that are in place at the time of the break in the hoisting rope.

The proposed parachute for the mine cages has as its purpose automatically to pick up the breaking cage and, with the help of a brake of a special design, to reduce the speed of the cage falling and thereby enable it to descend without sharp jolts.

In the schematic drawing of FIG. 1 shows a front view of a shaft cage supported by a hoisting rope, with the safety wedge parachute in its inactive position; FIG. 2-vertical section of the cylinder; FIG. 3-general view of the brake wedges.

The safety wedge pair for the mine stands consists of a cylinder 6 attached to the casing

(eleven)

cage with a piston 18, the hollow rod 16 of which ends with a hammer mechanism 8 of the type of a jackhammer and differs only in that it is supplied with a wedge 10 instead of a peak.

The rod 16 is provided with a valve 7, the stop 15 opening when the rod moves, and a pipe 3 with a valve I connected to the chain of the cage serves to start air into the cylinder 6.

The principle of the parachute is that during the break of the hoisting rope under the action of load 4, valve I opens, and compressed air from tank 2 through tube 3 enters cylinder 6. Piston 18 with propping mechanism rushes downward with air pressure. A portion of the compressed air enters through channel 5 to operate the percussion device.

The wedge under the action of strikes and pushes the slides 11, ending in wedges 12. The latter have an opposite notch relative to the movement of the cage down. It is enough to wedge 12 to come in contact with the conductors, as the wedge comes out of its nests and by this the self-wedging of the cage on the conductors is achieved.

The subject matter of the invention.

Safety wedge parachute for mine stands, characterized in that for sliding the sliders 11 (Fig. 1) with the wedge 10, when the rope breaks, a pneumatic hammer 8 is used, connected to the piston of the cylinder 6 (Fig. 1 and 2) using a hollow rod 16 fitted with the valve 7, which is opened by the stop 15 when the rod moves, and the pipe 3 with the valve 1 connected to the chain of the cage serves to start the air into the cylinder 6.

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