Lifting device special for rapidly lifting steel truss girder rod piece and using method

Abstract

The invention discloses a lifting device special for rapidly lifting a steel truss girder rod piece and a using method. Side vertical plates are fixedly arranged on the two sides of a flat bottom plate respectively. A transverse clamping plate is fixedly arranged between the side vertical plates. Bolt holes are formed in the flat bottom plate. Positioning pins are fixedly arranged below the flat bottom plate. Intervals between the bolt holes and the positioning pins are completely consistent with those between bolt holes in the steel truss girder rod piece respectively. A lifting hole is formed in the upper part of the transverse clamping plate. When the lifting device is used, two special lifting devices are lifted to the two ends of the steel truss girder rod piece through a crane, fixing bolts are inserted into the bolt holes of the special lifting devices and the steel truss girder rod piece for fixation after the lifting devices are positioned respectively, the steel truss girder rod piece is lifted to a designed mounting position through the crane, and the fixing bolts are disassembled. According to the special lifting device, loosening and sliding in a lifting process can be avoided, secondary pollution to the rod piece can be avoided, the special lifting device is short in lifting time, high in reliability, easy to operate, high in construction speed, short in construction period and low in cost, and can be used for lifting steel truss girder rod pieces with different specifications, and a few matched operators are required.

Description

technical field [0001] The invention relates to a special spreader for steel components and a use method thereof, in particular to a special spreader for quickly lifting steel truss members and a use method thereof, belonging to the field of road and bridge construction. Background technique [0002] With the rapid development of road traffic, there are more and more phenomena of elevated railways and elevated highways crossing existing railway bridges or existing highway bridges. Due to the control and influence of the structure below the line and the overall height of the line, the steel truss structure is often used for the upper span bridge to meet the design requirements of the line. The steel truss girder is assembled from various types of steel rods. The weight of the rods ranges from a dozen tons to dozens of tons. How to quickly and smoothly hoist the steel truss rods to the designed installation position A key link in beam construction. [0003] The current const...

AI Technical Summary

Problems solved by technology

This kind of hoisting method has many hidden dangers during construction. Since the steel truss girder members are wrapped in plastic bags, the steel truss girder members will inevitably be squeezed by the steel wire rope during hoisting, causing the plastic bags to rupture, which will still damage the steel truss girder members. The oil pollution caused by the truss members must be treated secondary to the steel truss members; secondly, it is greatly affected by human factors. It is easy to cause the steel wire rope to slide or even fall off, causing the center of gravity of the steel truss beam to shift, causing the steel truss beam to collide with the crane, or even the installed steel truss beam, causing construction accidents and requiring more auxiliary personnel , generally need 4~6 people to wrap steel truss beam members, high cost and low efficiency

At present, there is no better construction technology available in this field

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