Rope-length-adjustable fixed crane

Abstract

The invention relates to a lifting appliance. A rope-length-adjustable fixed crane comprises a lifting bracket, a hook assembly, a wire reel and an elevating motor driving the wire reel to rotate. The lifting bracket comprises a vertical rod and a horizontal rod. A mounting plate is arranged at the lower end of the vertical rod and provided with bolt through holes. One end of the horizontal rod are connected to the upper end of the vertical rod, and the elevating motor and the wire reel are fixed to the other end of the horizontal rod. The hook assembly is connected with the wire reel together through a lifting cable. The rope-length-adjustable fixed crane can adjust the rope length to change bearing force of a connecting rope, and the problem that an existing hook assembly is liable to fracture when lifting an object with the large length due to the fact that the rope length cannot be adjusted is solved.

Description

technical field [0001] The invention relates to a spreader, in particular to a fixed crane with adjustable rope length. Background technique [0002] There are basically two types of driving methods for cranes: one is centralized drive, that is, a motor is used to drive the long drive shaft to drive the active wheels on both sides; the other is separate driving, that is, the active wheels on both sides are driven by a motor. Small and medium-sized bridge cranes mostly use the "three-in-one" drive mode in which brakes, reducers and electric motors are combined into one. In order to facilitate installation and adjustment of ordinary bridge cranes with large lifting capacity, the drive device often adopts universal coupling. . A crane is disclosed in a patent document with a Chinese patent number of 2012203736371, an authorized announcement number of CN202785379 and the name of "tooling crane". The crane includes a hanger and a hook assembly. The hanger includes a vertical fr...

AI Technical Summary

Problems solved by technology

[0003] The first purpose of the present invention is to provide a fixed rope length adjustable crane that can adjust the length of the rope to change the force of the connecting rope, which solves the problem of unadjustable rope length of the existing hook assembly. The problem that it is easy to break when the item is long

[0004] The second object of the present invention is to further provide a fixed rope length that is not easy to shake when lifting objects, has a simple structure, and is not easy to slip when hooking objects. The crane solves the problems that the object will shake when the object is lifted by the existing crane, the appearance is bulky and not suitable for use in a narrow space, the phenomenon of dripping is easy to occur, the lifting distance is small, and the object is easy to slip during use

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