Maintenance Skill Of Hoisting Chain
Lifting chain is an important lifting accessories, often matching the rings to do lifting sling, in use directly under the load from lifting weight.
In the use of lifting chain should be noted:
1, check whether the lifting chain is intact or not crack.
2, the hoisting chain should be used first to test whether the chain can load.
3, in the use of lifting chain should avoid contact with corrosive and strong oxidizing substances, Lifting Chain so as to avoid corrosion of the lifting chain damage.
4, the lifting chain after the use of the removal of dirt, impurities, in order to maintain the chain of dry cleanliness.
5, lifting chain in idle time should be regularly coated with anti-rust oil so that the next time when the chain is not easy to rust and corrosion.
6, lifting chain is strictly prohibited to use overload to ensure the normal service life of the chain.
Lifting chain is an essential part of the crane, the role of the crane is immeasurable, Lifting Chain in the choice must pay attention to details, otherwise easy to cause serious consequences.
Maintenance and repair of hoisting chain
1. Sprocket on the shaft should not be askew and swinging. In the same transmission assembly, the end face of the two sprockets should be located in the same plane, the sprocket center is 0.5 meters below the allowable deviation of 1 mm, the sprocket center is more than 0.5 meters, allowing the deviation of 2 mm. Lifting Chain But it is not allowed to have friction sprocket tooth flank phenomenon, if the two-wheel is too big to be easy to produce the chain off and accelerate wear. You must pay attention to check and adjust the offset when changing the sprocket.
2. The tightness of lifting chain should be suitable, too tight to increase power consumption, bearing easy to wear, too loose chain easy to beat and off the chain. The degree of tightness of the chain is as follows: lifting or pressing from the middle of the chain, Lifting Chain the center distance of the two sprocket is about 2%-3%.
3. The new lifting chain is too long or after use elongation, it is difficult to adjust, can be seen to remove the chain section, but must be even. The chain section should be crossed from the back of the chain, the locking piece is inserted outside, Lifting Chain and the opening of the locking piece should be in the opposite direction of rotation.
4. After the sprocket wear is serious, the new sprocket and the new chain should be replaced at the same time to ensure good meshing. You cannot replace a new chain or a new sprocket alone. Lifting Chain Otherwise it will cause the meshing not to accelerate the new chain or new sprocket wear. Sprocket tooth surface wear to a certain extent should be in time to turn the surface use to extend the use of time.
5. The old lifting chain can not be mixed with some new chains, otherwise it is easy to have the impact in the transmission and break the chain.
6. Lifting chain in the work should remember to add lubricating oil in time. Lifting Chain The lubricating oil must enter the mating gap between the rollers and the inner sleeve in order to improve working conditions to reduce wear.