Device for hoisting steel coil on flat ground

Abstract

The invention relates to the technical field of hoisting devices, and discloses a device for hoisting a steel coil on the flat ground, which comprises a hydraulic bin, a connecting frame is fixedly mounted at the top of the hydraulic bin, and a stroke stopping plate is fixedly mounted at the position, close to the top, of an inner cavity of the hydraulic bin; four stroke holes are formed in the outer surface of the hydraulic bin, distributed in an annular array mode and movably connected into the hydraulic bin in a sleeved mode through an extrusion pipe. The lifting device is movably connected with the rotating seat I in a sleeving manner through the rotating rod during bearing, so that the extrusion device is driven to move in the hydraulic bin in the vertical downward direction, and the total volume of the interior of the extrusion pipe, an inner cavity of the hydraulic bin and a containing cavity located between the extrusion pipe and the flow limiting plug is reduced; and therefore, the hydraulic pressure in the containing cavity is increased, the reverse acting force borne by the telescopic rod is further improved, the friction force between the contact plate and the steel ring is further improved, the stability of the device in the working process is improved, and meanwhile the maximum hoisting weight of the device is further improved.

Description

technical field [0001] The invention relates to the technical field of hoisting devices, in particular to a hoisting device for flat ground steel coils. Background technique [0002] Steel coil is a kind of hot-rolled coil, which is a processed product before steel billet recrystallization, and its weight is about 15-30T. Once the steel coil falls to the ground, it is difficult to If it is hoisted, a special lifting device is needed at this time, and the steel coil is lifted by self-locking prevention. Its structure is composed of a lifting rod and a rotating support rod, and the length of the rotating support rod is less than the inner ring of the steel coil radius, so that when the boom is pulled up, one end of the rotating support rod can fit the steel coil, and the self-weight of the steel coil will make the rotating support rod self-lock to lift the steel coil, which is currently the most widely used The steel coil lifting device has the advantages of convenient use, s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing steel coil flat ground hoisting device proposed in the background technology, the present invention provides a steel coil flat ground hoisting device with the ability to self-adjust the support according to the self-weight of the steel coil The advantages of strong force solve the problem that the traditional lifting device is prone to bending the support rod

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