Hand gourd it used in structural design and performance

Hand moving hoist used in structural design and manual hoist, it has five characteristics: (1) the use of safe, convenient maintenance; (2) high mechanical efficiency, hand pull small; (3) the lighter weight, easy to carry; (4) beautiful appearance, small size; (5) durability. Daxing coal mine the chain hoist are used in factory maintenance, commonly used the HS series chain hoist adopts symmetrical arrangement of secondary spur gear hoist equipment mechanism, the maintenance, should be no load and overload test, confirm the work can be used in production. Often caused by a lack of detection means, chain blocks with the hidden trouble in production use, repair rate. Therefore, it is necessary to develop a tester, for the maintenance manual hoist loading experiment. 1 process manual hoist tester developed ever implement two kinds of schemes, finally, selected as shown in figure 1 new manual hoist tester, tension meter available directly shows that have been rated lifting weight of the chain hoist. The working principle of tension meter is spring absorption manual hoist external pulling force. After the spring load can produce corresponding deformation, unloading and then can recover