SU54409A1 - Parachute system for hoist cages - Google Patents

Description

The invention relates to parachute systems for hoisting cages, which are separated when the ropes are broken from the rest of the cage and contain grips that are pulled apart when the rope is broken to the sides by the action of springs and interacting with stops on the tires.

In the proposed parachute system for lift stands, the grippers are installed in the shoes, which, when a rope breaks, are lowered under their own weight and block the wedge-shaped grippers with a guide, with their tires (rails), and the swing-mounted levers on the shoes interact with their fist-heads on the same shoulder as the tires. (rails) and the other shoulder with the brake device mounted on the crate.

In FIG. 1 is a front view of a parachute system for hoisting cages; FIG. 2 is a view from above; FIG. 3 is a side view with a brake device; FIG. 4 is a variant of the brake device. The mechanism of the parachute system comprises two shoes / and 2 (Figs. 1, 2 and 3), mounted on rails L and B and

equipped with legs 3 vi 4 (fig. 1) resting on the roof of the cage. The shoes 7 and 2 are rigidly connected to each other by two rods 5 and b, and the rods 21 and 22, equipped with buffer springs 15 and 16, the shoes mate with wedge grips / 7, 12; in addition, the shoes carry pivot arms 7, 8 and 9, 10. When installing the system on wooden guide arms, they can be equipped with chisels 20.

The cage is suspended from the rope 14 on the pivot 13 (Fig. 1), at the lower end of which there is a head compressing the spring 23. The pivot 13 is attached in the form of a yoke 17, which has bent ends with notches entering the outer heads 21 and 22, as a result of which the buffer 15 and 16 (Fig. 1 and 2) are compressed, and the wedge grippers // and 12 are remote from the guide rails (tires) A and B. The guide rails A and S are evenly spaced along their entire length lugs 24.

When the rope is broken, the IS pin, the Pbd, by the action of the elastic force of the spring 23 (Fig. 1), moves downwards, and with it the yoke / 7;

while the heads of the rods 21 and 22 are released, and the springs 15 and 16 press the wedge grips 11 and 12. The grippers on the side of the rail heads have a groove, but not along the entire length, and thus when the gripper touches the rail, some of the pins will stop into the groove, and the next lower stop, the approach under the grip, will force the latter to stop. Guides same bashmaki 1 w. 2 under the action of the force of gravity will be lowered, due to which the seizures will seize.

Thus, the gripping mechanism will necessarily linger on the guide rails.

After the gripping mechanism is stationary, the cage will continue to move downward and thereby turn the levers 7, S and 9, 10, which are rotatably mounted on the shoes. The fist heads of the levers interact with the guide rails and the braking device is put into action, consisting of flexible bands 18, 19, mainly of strip iron, wound on drums 25, 26 and envelopes rollers 27 arranged in a checkerboard pattern. The magnitude of the braking force depends on the circumference angles received by the rollers 27, on the section of the tape and on the radius of winding them on the drums 25, 26.

To see the impact, you can use a brake device made in the form of cylinders S3 attached to the stand with pistons 29, 30 (Fig. 4), in which common piston rods 28 are connected with levers 7, 5 and P, 10 shoes / and 2 (Fig. 2 and 3).

The piston rod 28 (FIG. 4) of each cylinder at the lower end has a deadly fortified piston 29, and the second piston 30 is mounted loosely on the piston rod. The spring 31 is designed for a quarter of the braking force and serves as a pressure regulator. The annular space around the piston rod between the pistons is filled with lead.

Thus, when the cage falls, lead will compress the springs 5 / until a slot of the necessary cross section is formed to displace lead into the holes 32 in the walls of the cylinders.

The subject matter of the invention.

Claims (3)

1. The parachute system for the hoisting stands, which separates when the rope breaks from the rest of the stand, and contains grips that are pulled apart when the rope is broken to the side by the action of springs and interacting with stops on the tires, characterized in that, to lock the grips, J2 on the stops of the tires, shoes /, 2 are used, which fall when the rope breaks onto the wedge surfaces of the grippers under the action of their weight and equipped with two-arm swivel arms 7, 8 and 9, 10, interacting cam heads on one shoulder with the tires and connected In other their shoulders with mounted on stand brake fixture mi. 2. The form of the system according to claim 1, characterized in that the braking device is made in the form of flexible bands 18, 19, preferably of strip iron, wound on drums and envelopes guide rollers arranged in a checkerboard pattern. 3. The form of the system according to claim 1, characterized in that the braking device is implemented in the form of cylinders filled with lead and equipped at one end with pistons connected with levers 7, 8 and S, 10, and at the other end with holes for lead release. to the author's testimony M. L 54409 S. Prostakov 4 fig 1 / 15/7 P ( 21 j 13 22 fig