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Steel box girder quick lifting appliance and using method thereof

A box girder, fast technology, applied in the direction of load hanging components, transportation and packaging, can solve the problems of small change and poor applicability, and achieve the effect of wide adaptability

Active Publication Date: 2020-12-04
四川华神钢构有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1: The four-bar linkage mechanism is the structure of parallel rotation in the above-mentioned patent. Under the action of parallel rotation, the extruded plate is pushed to the slope of the box girder to achieve the purpose of supporting the slope. Since the four-bar linkage mechanism rotates in parallel During the process, the length of its horizontal displacement is not greater than the length of the connecting rod multiplied by the sine of the angle between the inclined plane and the vertical plane, so its variation is very small; therefore, the above patent can only be applied to the hoisting of some specific types of box girders , poor applicability

Method used

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  • Steel box girder quick lifting appliance and using method thereof
  • Steel box girder quick lifting appliance and using method thereof
  • Steel box girder quick lifting appliance and using method thereof

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Experimental program
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Embodiment 1

[0040] A fast lifting spreader for a box girder 1, comprising two symmetrically arranged lifting parts 2, the lifting parts 2 include: a base 21, a connecting block 22, an extruded plate 24 and a boom 23; the two lifting parts 2 are respectively connected to a beam The two ends of the crossbeam can be a combined beam or an integrated type without specific restrictions. The combined type is easy to install and dismantle, and the integrated type can bear better force, which can be set according to actual requirements; specifically, the lifting part 2 on the left The settings are as follows, the base 21 is set horizontally, the connecting block 22 is set on the left end of the base 21 and is located above the base 21 and can slide vertically on the base 21, and the extrusion plate 24 is hinged to the right end of the base 21 And set it inclined to the left; the lifting part 2 on the right can be set in reverse, and contact with the inclined surface of the box girder 1 by extruding...

Embodiment 2

[0058] In this embodiment, the main mechanism is basically the same as that of Embodiment 1. The main difference is that in this embodiment, the elastic member 42 is a high-strength spring, and the force formula of the high-strength spring is F=kx. According to the displacement x The change of the elastic member 42 can enhance the force of the upper support plate 41, so as to ensure that two support methods are provided, and the effect of the inclined plane support of the box girder 1 is reduced.

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Abstract

The invention provides a steel box girder rapid lifting appliance and a using method thereof. The steel box girder rapid lifting appliance comprises two symmetrically-arranged lifting pieces, and eachlifting piece comprises a base, a connecting block, an extrusion plate and a lifting arm; each lifting piece further comprises a special-shaped wheel and a horizontal supporting table, wherein the side face of each special-shaped wheel is composed of an involute curved surface, an equal-radius curved surface and a special-shaped curved surface, a rotating shaft of each special-shaped wheel is connected to the right side of each connecting block, and the rotating shaft of each special-shaped wheel and the axis of each equal-radius curved surface are coaxially arranged; each involute curved surface is engaged with the plate surface of each extrusion plate through a gear; each horizontal supporting table comprises an upper supporting plate and an elastic piece, each upper supporting plate isnested on each lifting arm and slides in the length direction of each lifting arm, the first end of each elastic piece is connected with each upper supporting plate, and the second end of each elastic piece is connected with each connecting block. According to the steel box girder rapid lifting appliance, the support force of the inclined surface of a box girder can be effectively reduced, and meanwhile, the wider adaptability of the lifting appliance is improved.

Description

technical field [0001] The invention relates to the technical field of box girder hoisting equipment, in particular to a steel box girder quick hoisting sling and a use method thereof. Background technique [0002] When hoisting the box girder, due to its large volume and not easy to fix, the following two methods are often used for hoisting: 1: Directly pass the wire rope through the bottom of the box girder to hoist; 2: Prefabricate lifting lugs on the box girder in advance , and then pass the steel wire rope through the lifting lug for lifting; the above two kinds of problems have more or less problems, one: directly using the steel wire rope will cause stress concentration, which will damage the box girder; second: prefabricating the lifting lug in advance, it will The process is increased, and in some subsequent working conditions, the lifting lugs will be cut, which is laborious and laborious overall. [0003] The Chinese patent application number is: 201710520170.6, ...

Claims

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Application Information

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IPC IPC(8): B66C1/62
CPCB66C1/62
Inventor 黄革宋钢
Owner 四川华神钢构有限责任公司