Automatic hooking and unhooking device for hanger of crane

Abstract

The invention discloses an automatic hooking and unhooking device for a hanger of a crane, which comprises pulling plate assemblies, a hanger and the like. Lower ends of the pulling plate assemblies are hinged with the hanger via two hinged shafts, and the distance between the two hinged shafts are larger than the hook center distance of a hanging hook, so that a trapezoid is formed by two hanging points of the hanging hook and centers of the hinged shafts which are used for hinging the lower ends of the pulling plate assemblies with the hanger. A left crank and a right crank are mounted between the two hinged shafts used for hinging the lower ends of the two pulling plate assemblies with the hanger by base plates. The left end of the left crank is hinged with a lug plate of the left end of the left pulling plate assembly by a left trunnion. The right crank is hinged with the lower end of the right pulling plate assembly by a right trunnion. Collision blocks are respectively mounted at the lower end of the left pulling plate assembly and the lower end of the right pulling plate assembly and are close to upper portions of the corresponding lug plates. Positions of the collision blocks on the pulling plate assemblies are higher than the right end of the left crank and the left end of the right crank before a hoisting process starts. Positions of the right end of the left crank and the left end of the right crank are higher than the collision blocks after the hoisting process starts. Outer sides of lower portions of the pulling plate assemblies are provided with positioning baffle plates welded on the hanger.

Description

technical field [0001] The automatic hanging and unhooking device for a crane spreader of the present invention belongs to lifting and transporting machinery, and particularly relates to an automatic hanging and unhooking device for a straight handle double hook hanging spreader of a casting crane. Background technique [0002] At present, multi-purpose metallurgical cranes need to use a straight handle double hook to hang the hook and hang the beam to complete the normal operation when lifting the load. The hook and unhook method of the hook hanging beam is manually assisted to hang the pull plate on the hook with a lever and other tools. After the operation is completed, the worker uses the lever to pull the pull plate away from the hook; or use a crane to move horizontally At this time, the operator needs to control the movement of the cart and the lifting of the hook at the same time, frequent jogging, and the operation is complicated; some pull plates are heavy, requiri...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to study and design a novel automatic hooking and unhooking device for crane spreaders, so as to solve the problems of low work efficiency, waste of manpower and safety risks in the prior art

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