Railway Construction Machine 100-300ton New Bridge Launching Gantry

Introduction to Highway bridge beam launcher

    Highway bridge erecting machine belongs to the category of crane. Its main function is to lift the beam piece to the designated position. The difference between highway bridge erecting machine and general crane lies in the harsh construction conditions, which are often used to erect highway bridge, railway bridge, etc. 

Basic structure and working principle of highway bridge erecting machine
   the basic structure of the highway bridge erecting machine includes the main beam, beam carrier, middle support leg, trolley on the beam, front return, hydraulic system, electrical system and safety device, etc. generally, the main beam of the bridge erecting machine is a double track triangular steel frame structure, with the length about twice the maximum span of the bridge erecting machine. The trolley on the beam is driven by the motor. Generally, according to the construction requirements, the trolley on the beam needs to be made according to the needs It is equipped with a large tonnage winch, the front leg is installed with a telescopic oil cylinder, and the driving mechanism of lateral movement is fixed at the front end of the receiving beam. The middle leg and the beam body are gradually connected by a rack. The middle support has the function of longitudinal and lateral movement, mainly realizing the span crossing of the bridge erecting machine, and the rear leg mainly plays the role of the span crossing of the bridge erecting machine. The structure of different types of highway bridge erecting machine is slightly different. The basic structural girder, crane, traveling structure and electric control system of single guide beam bridge erecting machine are compact in structure, high in utilization coefficient and widely used in Bridge Engineering with large width.

In order to ensure that the vehicle can bear the beam transport and ensure the safety and stability of the beam transport, the tyre beam transport vehicle is now used. Before the construction, some changes need to be made to the beam transport vehicle. The frame is made of thickened I-beam steel, and the power of the vehicle is diesel engine with good stability. The transmission mechanism is changed from fast and slow gearbox, engine general gearbox, differential gearbox and large and small gears Speed composition, the brake device is set with air brake and manual brake to ensure the safety of beam transportation.

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