Proper use of slings:
1. Users should be familiar with the performance, usage precautions and scrap standards of various slings and their end accessories.
2. The sling selected should be adapted to the appearance characteristics and specific requirements of the workpiece to be lifted. It must not be used unless the conditions for use are met.
3. Before operation, the slings and accessories should be inspected and confirmed to be in good condition before use.
4. Before hanging, the rope point should be selected correctly; before lifting, you should confirm whether the binding is firm.
5. Spreaders and accessories must not exceed their rated lifting capacity, and slings must not exceed their maximum working load in the corresponding hanging state.
6. Prevent damage to slings and accessories during operation, and add corner protection at edges and corners when necessary.
7. Slings should be inspected regularly during their service life. If conditions permit, slings and end accessories of large-tonnage and important products should be inspected for flaw detection.
Grasp the essentials of lifting large parts
For lifting or assembling large workpieces, due to the large tonnage, complex shape, high value of the workpiece, and the cooperation of multiple people, the difficulty and risk factor of the operation are further increased. Therefore, when slinging large workpieces, you should master and grasp Follow these essentials:
1. Observe the appearance of the workpiece before operation, grasp the center of gravity of the workpiece, and confirm the weight of the workpiece according to the drawing.
2. Correctly choose ropes, shackles, hooks and other slings. When selecting a steel wire rope, the tensile force carried by a single rope can be calculated according to the empirical formula of S (Newton) = 100·d2. Among them: d is the diameter of the wire rope, in millimeters.
3. The workpiece itself has lifting rings or lifting lugs specially designed for lifting. It should be carefully checked before operation, and all lifting rings should be added with cables.
4. If the workpiece itself does not have a lifting ring, the position of the rope point should be selected correctly. And align the hook head of the crane with the center of gravity of the workpiece.
5. Note that the angle between ropes should generally be less than 90 degrees.
6. The corners of the workpiece that the rope passes through must be protected by corner guards.
7. There should be a trial lifting process before lifting, and then proceed to the next step after confirming that it is safe.
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