Multi-juxtaposed double cantilever girder-erecting machine and grinder electing and hole penetrating method thereof

Abstract

The invention discloses a multi-juxtaposed double cantilever girder-erecting machine and a grinder electing and hole penetrating method thereof. A front hoist overhead crane and a rear hoist overheadcrane are arranged on the upper face of a main truss, and slide back and forth on a rail of the main beam in the construction direction of the main truss; a horizontal movement mechanism is arranged on the upper parts of both front and rear hoist overhead cranes, so the horizontal movement of a hanging beam is achieved and synchronous multi-erection is completed; four sets of legs are arrange below the main truss and are front-rear successively front auxiliary legs, front legs, middle legs and rear legs; the front auxiliary legs are arranged at the top end, the four sets of legs can move forwards and backwards in the construction direction, the horizontal movement mechanism is arranged on the upper part of the front and middle legs, so the horizontal movement upper from the main truss is achieved and synchronous multi-erection is completed. According to the multi-juxtaposed double cantilever girder-erecting machine and the grinder electing and hole penetrating method thereof, when satisfying beam erection in a large scale and hole penetrating, multi-juxtaposed bridges can be erected synchronously, hole penetrating bending moment is reduced, and the weight of the whole machine is lightened.

Description

technical field [0001] The present application relates to the technical field of bridge erecting machines for bridge construction equipment, and in particular to a double-cantilever bridge erecting machine with multiple frames juxtaposed and its beam erecting and hole passing methods. Background technique [0002] The bridge erecting machine is a device used to place prefabricated girders on prefabricated bridge piers. Bridge erecting machines fall into the category of cranes because their main function is to lift beams, transport them into position and then lower them down. But the bridge erecting machine is very different from the crane in the general sense. The conditions required by the bridge erecting machine are harsh, and there is walking on the beam, or longitudinal movement. There are several types of bridge erecting machines, such as highway bridges, conventional railway bridges, and passenger-only railway bridges. [0003] The bridge erecting machine generally ...

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Problems solved by technology

[0011] Although the existing bridge erecting machine can be constructed, when erecting a long-span girder, the weight of the whole machine is larg

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