A gantry crane device for bridge construction

Abstract

The invention relates to the technical field of gantry cranes, in particular to a gantry crane device used for bridge construction. The gantry crane device comprises a mounting rack, a cross shaft isarranged on the surface of the mounting rack, a large bearing is arranged on the outer side of the cross shaft in a sleeving manner and is mounted on the inner wall of a casing pipe, a lifting hook isarranged on the surface of the casing pipe, a mounting seat is arranged on the surface of the casing pipe, a shock absorption assembly is arranged on the surface of the mounting seat, the outer sideof the shock absorption assembly is sleeved with a connecting ring, the surface of the connecting ring is connected with a protection frame, a motor is arranged in the protection frame, and a drive shaft of the motor is connected with a lead screw through a transmission assembly. The gantry crane device has the beneficial effects that according to the gantry crane device used for bridge construction, the rotatable casing pipe is additionally arranged in the mounting rack, the lifting hook and a pipe body clamping structure are mounted on the two sides of the casing pipe, switching is carried out according to actual requirements, pipe clamping plates and a translation plate are connected, the translation plate is driven by the lead screw to shift, and therefore the two sets of pipe clampingplates clamp pipe bodies of different pipe diameters, and stability during pipe body lifting is improved.

Description

technical field [0001] The invention relates to the technical field of gantry cranes, in particular to a gantry crane device used for bridge construction. Background technique [0002] Gantry crane is a kind of deformation of bridge crane, also called gantry crane, mainly used for loading and unloading operations of outdoor cargo yard, material yard cargo, and bulk cargo. Its metal structure is like a portal frame, and two legs are installed under the main beam. , The two ends of the main girder can have outrigger cantilever beams. The gantry crane has the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. It is widely used in port freight yards and bridge construction. [0003] In the prior art, the general gantry cranes use hooks to realize the hoisting of heavy objects, but the hooks are not suitable for round tubular heavy objects. When hoisting round tubular heavy objects, they need to be tied up with ropes first....

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the general gantry cranes use hooks to realize the hoisting of heavy objects, but the hooks are not suitable for round tubular heavy objects. When hoisting round tubular heavy objects, they need to be tied up with ropes first. Then hang it on the hook to realize hoisting, which is not only very inconvenient to operate, but also takes a long time, and the stability of hoisting is low, and there is a large potential safety hazard; The surface of the hook, and then initially fix the hoisted heavy objects. In the process of transporting heavy objects, the heavy objects are easy to separate from the hook, the quality of lifting is poor, the safety is low, and there is no secondary fixing structure , affecting the stability of heavy lifting

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