Basics chain


Visual inspection of the chain:
1. inner / outer links deformation, cracks, corrosion embroidery;
2. Turn the pin is deformed or embroidered eclipse;
3. Roller whether cracks, damaged by excessive wear.;
The joint is loose deformation;
There are no different sound vibration or abnormal 5. operation, lubricate the chain in good condition;
Limitations of the chain: chain was used as a common power transmission device, by hyperbolic arc "chain" design, reduce friction, for use in large power and run slower place than belt drive too obvious advantages, such as tanks, air compressors, etc., but the transmission speed is not too fast, not as good as the chain flexibility belt conveyors.
Chain test method:
Chain length measurement accuracy according to the following requirements
1. Before measuring chain after cleaning;
2. Place the test chain around the sprocket on both the upper and lower sides of the test chain should be supported;
3. Measure the chain should be applied before the third state minimum ultimate tensile load stays under 1min;
4. When measuring, impose requirements on the measurement of the load chain, the upper and lower sides of the chain tensioner chain sprocket teeth should ensure proper fit.;
5. Measure the two chain sprocket center distance structure: from the inside and outside of the chain link sections. It from the inside chain plate, outer chain plates, pins, sleeves, roller five small components, depending on the merits of the chain pin and sleeve.
Measuring chain elongation:
1. To remove the entire chain of clearance, to some degree under the pull of tension applied to the measurement chain;
2. When measuring, in order to minimize errors in section 6-10 (link) where measurements;
Size L1 L2 inner and outer roller 3. Measure the number of links between, in order to judge the size L = (L1 + L2) / 2;
4. determine the length of the chain elongation, and this value chain elongation before items using threshold contrast, the chain elongation = judge size - standard length / reference length * 100%, the reference length = chain pitch * number of sections.
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