Remote releasing crane hook - has spring loaded stop remotely operated by cable to tilt hook and release sling

摘要

The catch unhooks a sling by remote control. The hook (132) supports the load by a sling (134) and is held in place by a pin (152) located in a slot (153) in a bar (154). The bar (154) is held in place at its upper end by a stop (160) which can be lifted by a remote control cable pulling on a support frame (139). A spring (158) pulls the bar (154) towards the horizontal position, allowing the pin (152) to slide along the slot (154) and causing the hook (132) to tilt under the weight of the sling (134), releasing the sling (134).