SU20291A1 - Parachute for mine cages - Google Patents

Description

Cases of the fall of the mine cages due to the break of the hoisting ropes, often accompanied by human victims, are well known. In order to avoid these utterly aimless victims, various precautionary measures are currently being applied, manifested in the use of braking devices that are in place when the lifting rope is broken.

The proposed parachute dp of the mine cage has as its purpose automatically pick up the broken cage and, with the help of a special design brake, reduce the cage falling speed and thus enable it to descend without a sharp jolt.

In FIG. 1 shows a front view of a shaft cage supported by a hoisting rope, with the braking device 2 in a non-operating horizontal position; FIG. 3 is the same cage position, side view; FIG. 2 - top view of the mine cage; FIG. 4-action brake device 2 at the time of the break of the hoisting rope.

The parachute for the shaft cages consists of springs 9 (figs. 1, 2 and 4) fixed on the body of the stand and uncoupled in case of breakage of the hoisting rope (fig. 4) and thereby acting on the levers 3 and 6 (fig. 1 and 4) , as well as on brake paws 2 (Figs. 1, 2 and 4), fixed on a common shaft with levers 3 and b, moreover, this shaft, besides the rotational movement, also has a translational direction towards the conductors 8, along the guides 5 (Fig 1, 2 and 4).

When the lifting rope is broken, the brake feet 2, under the action of the springs 9, lift up and guide the conductors 8 at their ends (Fig. 4 and 2), as a result of which the cage brakes; since the cage is connected to brake legs 2, it also contributes to braking with its weight.

The subject of the patent. A parachute for mine cages, equipped with lever cam grippers for conductors, characterized in that the cam claws 2 comprise separate parts fixed on the axes of the spring-turning levers 3, which axes may have lateral movement in the guides 5 towards the conductors.

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