Fixed-point lifting type bridge erection machine and bridge erection method

Abstract

The invention discloses a fixed-point lifting type bridge erection machine and a bridge erection method. The fixed-point lifting type bridge erection machine is characterized by being mainly composed of girders, a front supporting leg, a middle supporting leg, a rear supporting leg, hanging beam overhead travelling cranes, slide arms, a beam pushing channel and a hydraulic and electrical control system, wherein the girders are of a double-span type double-girder structure, the girders are connected through a front group of middle cross connectors, a middle group of middle cross connectors and a rear group of middle cross connectors, and the tops of the girders are provided with overhead travelling crane rails; the hanging beam overhead travelling cranes are installed on the overhead travelling crane rails, and the front supporting leg is fixedly installed below the front ends of the girders; the rear supporting legs are fixedly installed below the tail portions of the girders; the middle supporting leg is installed below the middle portions of the girders of the bridge erection machine; each side arm is composed of an outrigger, a sliding beam, a lateral moving system and a suspension arm, and the side beams are installed on the two outer sides of the girders and are symmetrical about the axis of the bridge erection machine; the upper end of each bottom cross support is connected with a corresponding inclined support, and the lower end of each bottom cross support is fixedly connected with the top surface of a beam pushing bottom plate; the beam pushing channel is composed of two beam pushing rails, a supporting bottom plate, a docking mechanism and an installation truss. The bridge erection method is characterized in that the fixed-point lifting type bridge erection machine is adopted.

Description

technical field [0001] The invention relates to bridge erecting machine technology, in particular to a fixed-point lifting bridge erecting machine and a bridge erecting method which adopts a beam pushing method in the beam feeding process. Background technique [0002] In the construction process of the existing bridge erecting machine, the beam feeding process is mainly carried out by the beam-carrying trolley (in fixed-point lifting) or the crane moves by itself (in non-fixed-point lifting). Regardless of the type of beam feeding process, a high-power motor is required to drive the wheel set to reach the designated position along the established track, and then the beam dropping process is performed. Due to the heavy weight of the prefabricated box girder, the feeding process of the beam is very slow and the efficiency is low; moreover, in non-fixed-point hoisting, the requirements for steel cables are very high, and its maintenance cost also increases accordingly; in addi...

AI Technical Summary

Problems solved by technology

The crane travels on the main girder to hang the girder, and drops the beam after reaching the designated position. Although there is only one host through the hole, the process is simple, but the crane needs to reciprocate and play the role of counterweight to ensure Via implementation

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