Correct selection and use of slings
Release time：
2024-04-24 11:40
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1. When selecting and determining a sling, the required ultimate working load should be chosen according to the mode factor and the nature of the article to be lifted; the size, shape and weight of the article, as well as the mode of use, the working environment and the nature of the article all influence the correct choice of sling. The sling selected must be of sufficient strength and length for use. When more than one limb of sling is used to lift an article, each limb should be of the same specification. The material of the slings should not be adversely affected by the environment or the article. End fittings and lifting devices should be compatible with the sling.
2. The sling should not be overloaded: the correct modality factor should be used and the labels may indicate the ultimate working load corresponding to some modality factor. When using multi-limb slings, the angle between the rope limb and the vertical direction should not exceed the maximum value specified.
3. The following advocated practices should be followed when lifting: before lifting the item, the hanging, lifting and lowering operations should be planned.
4. The sling should be correctly placed and attached to the article in a safe manner. It should also be ensured that the area where the sling is attached to the article is stretched flat so that the sling carries an even load in the width direction, and the sling should not be knotted or bent. To prevent damage to the tag on the sling, keep it away from the article, hook and choke.
5. The ultimate working load value of a multi-limb sling is based on the symmetrical loading of a combined multi-limb sling. That is to say, when the load is lifted, the limbs are symmetrically distributed according to the design, and the angle between the corresponding limbs and the vertical direction is the same. In the case of a three-limbed sling, if the limbs are not symmetrically distributed as designed, the tension will be higher on the limb with the greatest sum of design angles and the angle between the adjacent limbs. The same will happen with four limb slings unless the load is a rigid article. NOTE: When lifting a rigid article, only three limbs, or even two limbs, are stressed and the remaining rigging limbs are used only to balance the article.
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Correct selection and use of slings
When selecting and determining a sling, the required ultimate working load should be chosen according to the mode factor and the nature of the article to be lifted; the size, shape and weight of the article, as well as the mode of use, the working environment and the nature of the article all influence the correct choice of sling.
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