| 摘要 |
The invention relates to a lifting hook, its safety latch and a locking and releas ing device of the safety latch. The lifting hook (1) comprises a hook body (2) having a hook stem (4) and tip (5). The safety latch (6) has a fastening end (7) and a free latch end (8), the fastening end of the safety latch being pivotably 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 sub stantially against the inside of the hook body in a position that leaves a hook jaw (G) 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 be tween the safety latch and hook body forces the latch end into the closed posi tion. The locking and releasing device (10) of the safety latch comprises a lock ing element (11) arranged on the back surface of the safety latch (6), which el ement in its locking position against the surface of the hook body engages the inner surface area of the hook jaw (G) at a distance below the fastening end (7) of the safety latch, and a releasing lever (12) that extends to the front side of the safety latch and, when turned, releases the locking element and, thus, allows the safety latch (6) to turn into its closed position. |
