RU179701U1 - Self-tightening sling - Google Patents

Abstract

The utility model relates to hoisting and transport machinery, in particular to slings, and can be used in various industries and in the transportation of goods. The self-tightening sling consists of a closed tape forming at least one tightening loop turning into at least one lifting loop, a larger tightening loop, and the closed tape loops pass through a separation device separating them. The technical result consists in separating the tightening loop and the lifting loop of the closed tape using a separation device, which ensures the sliding of the closed loop loops inside it with the application of force to one of the sling loops and allows not to twist the tape when making the sling.

Description

The utility model relates to hoisting-and-transport mechanical engineering to devices for lifting and transporting goods with or without special external coatings, their loading and unloading using lifting machines and further transportation of goods.

From the prior art, a sling is known which is self-tightening transport textile packing, consisting of tapes forming a lifting loop and a packing loop, and two metal buckles with which the sling tapes are connected to each other and fixed relative to each other, and the tightening takes place under the weight of the packaged cargo lifting (see RU 155449 U1, publ. 10.10.2015).

The drawback of such a sling is its single use for packing the cargo, since for unpacking it is necessary to cut the sling tape in the packaging loop, after which the sling can no longer be used for its intended purpose repeatedly.

The prior art self-tightening cargo sling, consisting of a flexible fabric in the form of a tape forming an inner loop, passing into an outer loop superimposed on the inner loop. The sling loops extend about half their circumference inside a flexible fabric cover in which the loops touch and slide together when a lifting force is applied to the outer loop, while the inner loop is tightened around the load to be lifted (see US 4022507 A, publ. 10.05 .1977).

The disadvantage of such a sling is the need for twisting the tape of one of the loops when they are superimposed on each other. This leads to a decrease in the strength of the sling of textile materials. In addition, when loops are placed directly on top of each other in a fabric cover, considerable efforts are required to tighten the sling on the load due to the need to overcome the friction forces that arise when the loops move along each other and along the material of the fabric cover in which they are located, and therefore Often, a multiple lifting of the load is required in order to fully tighten the sling on it.

The objective of the utility model is the manufacture of such a sling, which:

- is tightened on the load when it is being lifted, thereby increasing the reliability of cargo retention during movement and the safety of such work;

- does not damage the surface of the cargo at the place of its contact with the sling;

- is tightened on the load when it is lifted once, i.e. can pack a cargo consisting of several elements of the same type, not connected in one package;

- keeps the cargo in a locked state when it is lowered onto a continuous horizontal surface when the sling is between the cargo and the surface;

- allows you to easily loosen the load, if necessary, and can then be used again for its intended purpose repeatedly.

The technical result consists in separating the tightening loop and the lifting loop of the closed tape using a separation device, which ensures the sliding of the closed loop loops inside it when a force is applied to one of the sling loops and eliminates their friction against each other, and it is also not necessary to twist the tape during manufacture sling.

The technical result is achieved by the fact that the self-tightening sling consists of a closed tape forming at least one tightening loop turning into at least one lifting loop, a larger tightening loop, and closed loop loops passing through a separation device separating them.

Fulfillment of the claimed sling with a separation device separating the loops of the closed tape eliminates their contact with each other, thereby avoiding the need to overcome the friction forces that arise when the loops move along each other, and, consequently, significant efforts when tightening the sling on the load.

The implementation of the sling of textile tape allows you to ensure that there is no damage to the surface of the load at the place of its contact with the sling.

The technical result is achieved, in particular, by the fact that the separation device is made of flexible or textile material and has at least two separate passages through which the tightening loop and lifting loop are passed without touching each other.

The implementation of the separation device of at least two identical parts located symmetrically relative to each other can improve the efficiency of separation of the loops of the sling and reduce the length of the separation device.

The claimed utility model is illustrated by a figure, which shows a General view of the sling ring type self-tightening with separation and section AA at the location of the separation device on the sling.

The self-tightening sling consists of a closed textile tape forming at least one lifting loop 1, turning into at least one tightening loop 2, while the loops of the closed textile tape pass through a separating device 3 separating them from a flexible or textile material, having at least two separate passages through which, without touching each other, tightening and lifting loops are passed, and located in the lower part of the sling, and the ends of the closed textile tape of the sling are connected by stitching four.

The claimed utility model operates as follows.

A self-tightening sling is put on the load from its end and a lifting loop is hung on the load-gripping body of the lifting machine and the load is lifted to a small height (200-300 mm), while under the weight of the cargo there is a hauling of the closed textile tape and the tightening loop is tightened on the cargo.

When laying the load, which is sealed with a sling, on a flat surface, when the sling is sandwiched between the load and a flat surface, the load remains sealed.

To remove the sling from the load after lifting, moving and transporting, it is necessary to put both main loops (lifting loop and tightening loop) on the hook of the lifting machine, raise the load to a small height (200-300 mm), while in fact the load will be applied to the tightening loop , which will lead to a weakening of the sling tightening on the load and will make it easy to remove the sling from the load after lowering it. After this, the sling can be used again for its intended purpose.

When unpacking the load, lifting for both loops is necessary to prevent re-packaging and the need for continuous control by the slinger of this operation.

The sling self-dragging with separation can be equipped with a bar code that allows electronic identification and accounting of slings both from their manufacturer and the consumer, which greatly simplifies the process of accounting when examining the slings during their operation, as well as the receipt of slings to the consumer.

For slinging long loads (pipes, rolled steel, reinforcement, logs, etc.), at least two slings must be used.

Claims (4)

1. The sling is self-tightening, consisting of a closed tape forming at least one loop of tightening, turning into at least one lifting loop, a larger tightening loop, and the loop of the closed tape pass through a separating device separating them. 2. A sling according to claim 1, characterized in that it is made of textile tape. 3. A sling according to claim 2, characterized in that the separation device is made of flexible or textile material, has at least two separate passages through which, tightening and lifting loops are passed, without contacting each other, and is located at the bottom parts of the sling. 4. A sling according to claim 3, characterized in that the separation device consists of at least two identical parts located symmetrically relative to each other.

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