Generally speaking, the large tonnage chain block refers to the chain block with a bearing weight of more than 40 tons. In order to ensure the bearing capacity and stability, the large tonnage chain block adopts the design of single hook, double / multiple heads and double / multiple rows of chains. For example, the 100 ton chain block adopts the upper and lower hooks with a standard bearing capacity of 120 tons, four light chain block heads (including four hand zippers), the design of 20 12mm load-bearing chains in double rows, and the coaxial chain arrangement mode not only facilitates the lifting operation, but also ensures the best stress state of the chain, Ensure the safety of engineering operation.

The production requirements of large tonnage chain block are very high, which can not be developed and produced by some small processing plants. The 100 ton chain block of Hangzhou guanhang machinery is independently designed, manufactured and upgraded through the anti jump chain of the patented chain block, which makes the new products more cost-effective and greatly improves the quality and safety of the products.