Concrete prefabricated box girder rapid hoisting appliance

Abstract

The invention belongs to the field of concrete prefabricated box girder hoisting, and particularly relates to a concrete prefabricated box girder rapid hoisting appliance. The hoisting appliance comprises a left hoisting device and a right hoisting device, wherein adjusting devices for adjusting the distance between the left hoisting device and the right hoisting device are arranged on the left hoisting device and the right hoisting device; and the left hoisting device and the right hoisting device are the same in structure and each comprise an L-shaped support, a first positioning mechanism and a second positioning mechanism, wherein the first positioning mechanism is arranged on the upper half part of the L-shaped support, the second positioning mechanism is arranged on the lower half part of the L-shaped support, two symmetrically arranged auxiliary travelling wheels are arranged at the bottom of the L-shaped support, and the top of the L-shaped support is provided with two symmetrically arranged hoisting rings. According to the hoisting appliance, prefabricated box girders with different specifications can be rapidly hoisted without binding by means of steel wire ropes, mutualfriction between the steel wire ropes and the prefabricated box girders can not be generated in the hoisting process, and the hoisting safety is improved.

Description

technical field [0001] The invention belongs to the field of hoisting of prefabricated concrete box girders, and in particular relates to a quick-lifting sling for prefabricated concrete box girders. Background technique [0002] When the concrete prefabricated box girder is hoisted, because the concrete prefabricated box girder is large and difficult to fix, it is usually bound with steel wire ropes and then lifted by hoisting equipment. The premise of this hoisting method is that there must be enough space between the prefabricated concrete box girder and the ground for the wire rope to pass through, otherwise it is very difficult to bind the prefabricated concrete box girder; Shaking is inevitable, the steel wire rope and the concrete prefabricated box girder are squeezed, slid, and misplaced, and the contact area between the steel wire rope and the concrete prefabricated box girder is small, and the pressure is too concentrated, which can easily cause damage to the concr...

AI Technical Summary

Problems solved by technology

The premise of this hoisting method is that there must be enough space between the prefabricated concrete box girder and the ground for the wire rope to pass through, otherwise it is very difficult to bind the prefabricated concrete box girder; Shaking is inevitable, the steel wire rope and the concrete prefabricated box girder are squeezed, slid, and misplaced, and the contact area between the steel wire rope and the concrete prefabricated box girder is small, and the pressure is too concentrated, which can easily cause damage to the concrete prefabricated box girder Or wear off the strands of the wire rope, which will bring safety hazards

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