SU761419A1 - Automatic arrester of steel rope - Google Patents

Description

The invention relates to lifting mechanisms, namely to the stoppers of the ropes of the hoists.

The automatic stopper of a steel rope is known, containing a yoke and a wedge interconnected by guides, between which a rope is passed, an envelope moving block, a movable frame connected to the wedge and interacting with the fixed frame by means of a spring [1].

The disadvantage of this device ^: low reliability due to low wedging speeds and the inability to use the movable frame because of this inertia, which is especially important in the conditions of an aggressive environment, which is sea water.

The purpose of the invention is to increase the reliability of the device in an aggressive environment (sea water).

For this purpose, the grooves are made of a sliding frame and the shock arms are connected by a flexible coupling to the holder, which is located in the said slots, and the fixed frame is equipped with shock absorbers that interact with the shock arms and the mobile frame, which is connected to the wedge and the unit rigidly.

FIG. 1 shows the stopper in the section at

tight rope, dotted line shown, po2

Locking of the movable frame of the block of the cheeks and percussion levers with a tight rope; in fig. 2 - the position of the parts of the stopper after a rope break; in fig. 3 - cut

6 A – A of FIG. one; in fig. 4 - scheme of lifting the vessel.

The fixed guide frame 1 is movably connected to the movable frame 2, on which the block 3 is fixed in the cheeks 4, fixedly connected to the wedge 5, installed by means of the crests 6 and grooves 7 in the cage 8. The sleeve 8 through the grooves 9 and their cheeks 10. frame 1. B. cheeks 4 mounted shock levers And, which through flexible connections 12 are connected with the yoke 8.

The frame 2 through the spring 13 is connected to the element 14 of the frame 1. In the fixed frame, a window 15 is made for the passage of the cheeks to the movable frame unit and the shock absorbers 46 and 17 are installed. The block 3 is covered by a cargo steel cable 18. The cheeks 4 have studs 19 that hold the levers 14 in working position. At the end of the movable frame, there are rollers 20 installed, guides a rope 18 wound on a winch drum 24 and secured with a free end at anchor 22. Rope 18 is connected via a stopper 23 to a vessel 24 mounted on a trolley 25.

761419

The traction force of the rope 18 when lifting on an inclined plane is 50 tons. Under the vessel 24, the cart 25 is afloat. The drum 21 begins to tighten the rope 18, under the influence of which the frame 2 together with the wedge 5 and the yoke 8 from the neutral position (shown in dotted lines in Fig. 1) moves to the left, stretching the spring

13. With a pulling force of 1-2 tons, the frame 2 rests on the upright 26 of the frame 1, the spring 13 ceases to stretch, and the increasing load is transferred to the frame 1. The 25 s truck 24 rises.

Suppose that one of the strands of the cargo rope broke, or because of winch malfunctions, the drum 21 began to drascrude or could not stand the anchor 22. Under the action of the spring 13, frame 2 begins to move to the right, increasing speed, reaching its maximum speed in the neutral position (in FIG. 1 is shown by a dotted line). In this case, the yoke 8 synchronously moves with the frame 2, since it is connected by a flexible coupling 12 with the levers 11, and the studs 19 do not allow the levers 11 to unfold.

The arising inertia forces continue to move the frame 2 to the right and compress the spring 13. The frame 2 with the cheeks 4 and the block 3 enters the window 15. The shock levers 11 hit the shock absorbers 16 ‘and 'rotate. Pin, connecting clip 8 and. wedge 5, cut off. The frame 2 is braked with cheeks 4 and block 3 and the speed of movement of the yoke 8 increases. When the frame 2 hits the shock absorber 17, the yoke 8 finally clamps the rope 18, the latches 27 work, the spring 13 tends to move the frame 2 to the left, but the cheeks 10 abut, latches 27 and locking clip 8. Steel rope is locked. Accident eliminated. Locking takes place in a fraction of a second - practically the cart with the vessel will not have time to start in the event of a traffic accident.

The unfolding takes place as follows: the carriage 25 is locked by a separate cable or by pressing directly to the rail, the clamp is compressed (to the right) of the yoke 8, the latches 27 are moved apart, and using the same clamp the frame 2 with the block 3, the cheeks 4 and the yoke 8 are smoothly transferred to the neutral position. Then the holder 8 is knocked out of the wedge 5.

There have been cases of falling ships from carts due to the lack of automatic systems for locking steel rope.

The automatic steel cable stop allows you to eliminate accidents in the field of transport,

“To eliminate the fall of the climbing cradle with people, to use non-standard equipment for lifting and transporting works.

Claims (1)

Claim Automatic steel cable stopper containing interconnected guides of the yoke and a wedge, between which a rope, an envelope block and a movable frame connected with a wedge, interacting with a fixed frame by means of a spring, are missed, in order to increase the reliability of the device in aggressive conditions environment (sea water), grooves are made on the movable frame and shock levers are mounted, which are connected with a flexible coupling to the holder, which is located in the said lasers, and the fixed frame is equipped with shock absorbers interacting with the shock arms and the moving frame, which is connected with the wedge and the block rigidly. .....