Lifting hook, safety latch of lifting hook and locking and releasing device of safety latch

摘要

A lifting hook, its safety latch and a locking and releasing device of the safety latch are disclosed. The lifting hook includes a hook body having a hook stem and tip. The safety latch has a fastening end and a free latch end, the fastening end of the safety latch being pivotally fastened close to the stem so as to move the safety latch between an open position and a closed position, the safety latch being in its open position substantially against the inside of the hook body in a position that leaves a hook jaw free, while in the closed position the latch end extends across the hook jaw to the hook tip, closing the jaw on the inside thereof. A spring arranged between the safety latch and hook body forces the latch end into the closed position. The locking and releasing device includes a locking and releasing lever that is arranged to turn freely between a turning axle of the safety latch and latch end in the front area of the safety latch and that in its locking position rests against the hook tip and keeps the safety latch in its open position against the inner side of the hook body.

主权项

1. A lifting hook comprising:
a hook body with a hook stem and a hook tip; a safety latch with a fastening end and a free latch end, the fastening end of the safety latch being pivotally fastened close to the hook stem so as to move the safety latch between an open position and a closed position, the safety latch being in its open position substantially against the inside of the hook body in a position that leaves a hook jaw free, while in the closed position of the safety latch the latch end extends across the hook jaw to the hook tip and against the hook tip, resting against the inside of the hook body and the hook jaw, closing the hook jaw; and an actuator configured to actuate the safety latch, the actuator comprising a spring arranged between the safety latch and the hook body and forcing the latch end into the closed position, and a locking and release device for locking the safety latch into the open position and for releasing the safety latch from the open position, wherein the locking and releasing device of the safety latch comprises a locking and releasing lever that is arranged to turn freely between a turning axle of the safety latch and the latch end in the front area of the safety latch and wherein in a locking position of the locking and releasing lever rests against the hook tip and keeps the safety latch in an open position against the inner side of the hook body.