The utility model discloses a hoist of guaranteeing serviceability turns over, including hoist main hook, steel ladle, couple, connecting rod and hoist auxiliary hook, the connecting rod sets up on the hoist auxiliary hook, the couple is connected with the connecting rod, and the bill of couple is connected with the lug of steel ladle, the couple adopts C type structure, the steel ladle sets up on the hoist main hook. The utility model discloses the mechanism is simple, and convenient operation hangs and can use on the hoist auxiliary hook, and is balanced through self, makes the couple lean forward, and the bill can be hung in the steel ladle smoothly when the auxiliary hook promoted, accomplishes turning over the contract for a job and do, and the auxiliary hook descends can accomplish unhook work, lets the pannier turn over the contract for a job and becomes safe, light, swiftly.