Topic: Maintenance skills of electric chain hoist
The electric chain hoist runs frequently or is used irregularly during lifting, which will easily reduce the performance of the electric chain hoist and shorten the service life. Therefore, maintenance has become a must-have skill when using electric chain hoists. The advantage of maintaining the electric hoist is to extend the service life of the electric hoist and to ensure a good experience for the users. The following are the tips for maintaining electric hoists that we have summarized for everyone. Let's increase our knowledge together!
After each operation, wipe the mud, dust or oil on the terminal lifting chain, add appropriate lubricating oil to the chain as appropriate, and gently put it into the chain bag to prevent corrosion.
When mud, cement or other dirt enters the electric hoist, wipe it with a damp cloth and let it stand for 3 hours before the water evaporates before continuing to use it.
When the lifting hook is worn out, deformed or broken, and the bearing capacity is less than 80% of the rated load, the hook cannot be welded, and the hook should be replaced in time. When the diameter of the lifting chain is reduced by more than 10%, the lifting chain should be replaced.
Regular inspections of electric hoists should be established, and electric chain hoists should be maintained at least 4 times a year.
It is necessary to strictly implement the patrol inspection system for the electric chain hoist, check the lift switch, wire rope hook brake, etc. every shift, and deal with the fault in time.
Keep the surface of the electric chain hoist clean and keep the parts of the electric hoist well lubricated.
When the electric hoist stops working, it is strictly forbidden to hang heavy objects in the air.
The focus of the inspection of the cone motor is the deformation and destruction of the flexible force-bearing parts (disc spring and spiral spring) on the motor rotor shaft in the braking part in time to ensure the reliable braking and the air gap of the motor. The insulation resistance of windings and wiring boards should also be checked according to the specifications. In addition, check whether the broken spline of the brake shaft is deformed to prevent slippage and shaft breakage.
The electric control box of the electric hoist is generally on the body of the electric hoist, which moves with the electric hoist, which has a great impact on vibration, and has many corrosive gases in the environment, which is prone to failure. Generally, it is cleaned and tightened regularly every 7 days. If the space of the workshop is large, the electric hoist control box can also be installed on the ground. Use 8*2.5 rubber cables, 6 to drive the host and walking motor respectively, and the other two for limit protection , This can reduce the failure rate of the electric chain hoist.
When the electric chain hoist runs continuously for a long time or may be overloaded, a phase-out and over-current protection device should be added to the power supply to prevent the motor from burning.
The oil in the gearbox of the electric chain hoist has reached 500 hours from the start of operation. Please check whether the amount of lubricating oil is sufficient, and check the lubricating oil regularly for the third month. If it is insufficient, add oil.
When using electric chain hoist outdoors, rain-proof equipment should be installed.
Always keep the parts of the electric chain hoist dry. When the operation is completed, please drive the hoist away from the humid area, high temperature area or chemical area to maintain its performance.
For the lifting industry, if you want to complete the work smoothly and efficiently, you must be proficient in the use of electric chain hoists. We must carry out skill training for the users so that they can establish awareness and be proficient in the correct use of lifting equipment and maintenance skills.