Semi-automatic container spreaders

Semi-automatic spreaders are fixed to the hooks of gantry, bridgeand portal cranes. Twist lock control is carried out mechanicallyby means of wire rope pulling. Hooking/unhooking is carried outwithout help of crane workers. Simplicity and convenience ofspreader installation allow converting from hook crane intocontainer crane in a short time. There is no necessity to arrangepower supply for the spreader and to update the crane controlcircuit.