Control the quality of lifting belt

The quality of lifting products is directly related to the life of the staff, so no matter what product in the production process must do a good job in quality control. Here is to introduce the three aspects of lifting belt quality requirements< First of all, the quality of belt material and knitting. The general belt is made of continuous fibers such as polyester, polyester and polypropylene. The tape should have no obvious defects in the weaving process, and the fabric should be made of the same material. The standard width of the tape is 25 mm, 35 mm, 50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm. The allowable deviation is when the bandwidth is less than or equal to 100 mm ± 10%; When the bandwidth is greater than 100 mm, the allowable deviation is ± 8%. The belt thickness should be uniform. When the sling is composed of multiple belts, each belt has the same thickness. The colorant, coating and covering of sling shall be non-toxic and harmless secondly, the sewing of sling. The seam shall be sewn with the same high-quality thread as the belt material, and the seam shall be flat. When suturing, there should be a distance between the suture and the width edge of the belt. 1f the thickness of the belt is not more than 10 mm, 2-4 mm should be left without suturing; 1f the thickness is more than 10 mm, leave 4-8 mm without suture. The end of the suture should be treated with “back seam”, and the length of “back seam” should not be less than 25 mm finally, the end pieces are prepared. The inner diameter of the supporting sling soft ring should not be less tha2.5 times of the diameter of the end piece. The breaking strength of the metal material of the end piece shall not be less than 4 times of the ultimate working load of the sling. Casting parts are not allowed for end parts the above are three aspects to control the quality of lifting belt. 1n addition, introduce the common wear damage of lifting belt: 1. Deformation and wear. The impact damage of wire rope surface caused by vibration and collision is a local wear phenomenon. 1f the wire rope on the surface of the drum is impacted by other objects, the hoisting wire ropes are intertwined, or the rope biting phenomenon is caused by the deflection of the pulley and the drum center, the wire rope will be deformed and worn2. 1nternal wear. 1n the process of use, because of the bending of the wire rope, the internal thin wires interact and slip, the contact stress between the strands increases, and the steel wires between the adjacent strands produce local indentation deep concave. When the wire rope is repeatedly stretched and bent, the stress concentration and fracture occur in the deep concave, which constitutes the internal wear in addition to understanding the common wear damage of lifting belt, we can carry out targeted prevention and treatment. For example, if conditions permit, the diameter of the drum and pulley should be increased as much as possible, the lifting belt with good structure should be selected as much as possible, and the sharp corners should be wrapped, so as to ensure the safety of operation and prolong the service life our website solemnly declares that this article is reprinted by network media, only representing the author’s point of view, and has nothing to do with our website. 1f the information column articles and comments violate your legal rights, please call to let us know and we will deal with them in time

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