Only high-quality imported hook-type electric chain hoist drive chains are worth buying.

　　The transmission chain is a critical component of imported electric hoists; lifting operations simply cannot be carried out without its proper functioning. Therefore, when purchasing an imported electric hoist, it is essential to carefully inspect the quality of the transmission chain—only high-quality chains are worth buying, while low-quality ones should be avoided at all costs. The following sections provide a detailed explanation.

　　Imported hook-type electric chain hoists are widely used lifting and rigging devices. Like their domestic counterparts, these imported electric hoists also feature a transmission chain—commonly referred to as the lifting chain—and typically employ Grade 80 transmission chains.

　　Before each lifting, hoisting, or pulling operation, the manual chain must be repeatedly actuated under full-load conditions to move the hook within the lifting chain to the proper position; only then can the hook be engaged and the lifting or pulling operation commenced gradually. In mine shafts with limited working space, operating the hoisting equipment is often inconvenient, resulting in significant time wastage.

　　Under these circumstances, for imported hook-type electric chain hoists, the lifting chain—without a hook—can be manufactured and processed by the chain manufacturer upon authorization. When it becomes necessary to replace the drive chain, it is still best to purchase a new one directly from the dealer from whom the electric hoist was originally purchased, as this ensures safety and reliability.

　　Connect the independent hook to the chain block via a short section of drive chain. During operation, position the chain block at the appropriate point on the stepless lifting chain based on the specific location of the object to be lifted or pulled, and then the object can be directly hoisted or pulled. With the drive chain of the imported electric hoist in good condition, this eliminates the need for reeling and winding the chain.

　　Root Causes of Common Failures in Imported Hook-Type Electric Chain Hoists

　　Some components of imported hook-type electric chain hoists have aged.

　　When galvanized steel wire ropes develop cracks or significant damage, they are prone to rupture, which can result in the suspended load dropping and pose a serious threat to both life safety and financial assets. Damage to the insulation layer is typically caused by cable aging and can lead to electrical leakage.

　　Damage to the braking system, oil stains on the braking system, or loose brake linings can result in excessive deceleration that exceeds the specified tolerance.

　　Edge damage results in excessive wheel clearance, which compromises performance.

　　Poor sealing can lead to oil leakage in the reducer, necessitating regular replacement of the sealing rings.

　　Some components of imported hook-type electric chain hoists have aged.

　　When galvanized steel wire ropes develop cracks or significant damage, they are prone to rupture, which can result in the suspended load dropping and pose a serious threat to both life safety and financial assets. Damage to the insulation layer is typically caused by cable aging and can lead to electrical leakage.

　　Damage to the braking system, oil stains on the braking system, or loose brake linings can result in excessive deceleration that exceeds the specified tolerance.

　　Edge damage results in excessive wheel clearance, which compromises performance.

　　Poor sealing can lead to oil leakage in the reducer, necessitating regular replacement of the sealing rings.