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Polyester Webbing Sling Belt measurement method for thickness, color and width of lifting Belt

There are many kinds of hoisting belt specifications, different tonnage of their width and thickness are not the same, different colors on behalf of different tonnage.

1, lifting belt thickness test, ribbon detection thickness is, the measurement standard is in accordance with GB/T3820, but the standard requirements are in accordance with the general purpose synthetic fiber flat lifting belt standard to perform. The standard clearly stipulates that the thickness of the webbing should be at least 2mm when making single-layer finished hoisting belts. The thickness of webbing used for suture of multilayer lifting tape should be at least 1.2mm.

2. Color test of Polyester Webbing Sling Belt and Polyester Webbing Sling Belt can also be interpreted as the color test of hoisting Belt. This test is a little complicated, but the actual test method is very simple. After printing and dyeing, the webbing is required to have a color fastness to friction not less than Grade 3 specified in CB/T251. The chart of level 3 has clear rules, but it is time-consuming and laborious to test. After a long inspection, the Polyester Webbing Sling Belt shows that the chart of level 3 is: Ordinary white paper on the printing and dyeing good webbing hard back and forth friction, if the white paper is white, then it shows that the printing and dyeing technology is qualified.

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3. The width of lifting Belt is determined by Polyester Webbing Sling Belt. The first part: general purpose synthetic fiber flat lifting Belt standard is performed, which also conforms to EN1492-1:2000. Synthetic fiber webbing whether traditional weaving or shuttleless weaving, the webbing width standard is divided into two error values, when the nominal width of the webbing is not more than 100 mm, the allowable width deviation is ±10%, when the nominal width of the webbing is more than 100 mm, the allowable width deviation is ±8%. The nominal width here means the same thing as the usual nominal length. At present, the national standard hoisting belt width requirements between 25 mm – 320 mm. For example: when the nominal width of 1 ton lifting belt is 30 mm, the deviation value is plus or minus 10 percent of 30 mm, that is, the error of ±3 mm.

The connection between the lifting belt and the hook is as follows: when we use two lifting belts for lifting operations, we need to hang them into the double hook, and the two lifting belts are respectively hung in the center position of the symmetrical force of the double hook; When the four lifting belts are used at the same time, when every two lifting belts are directly hung into the double hook, it is necessary to pay attention that the two lifting belts should not overlap and squeeze each other, and the four lifting belts should be symmetrical to the force center of the hook.

Collocation is used there is a very important link in the process of the need to mention notice that it is need to be the center of the lifting belt hung hook stress directly, cannot hang on the hanger hook pointed part, when using the lifting belt, is likely to be because the hook inside diameter smaller and the width of the lifting belt is bigger, make it unable to spread out in the process of connection, so that the lifting belt appeared distorted situation, In this case, a matching hook should be selected for operation.


Post time: Aug-08-2022