Product
Girder lifting machine is a kind of gantry crane specially designed for bridge construction. The girder lifter is mainly composed of assembled main girder, outriggers, overhead cranes, etc. The components are connected by pins and high-strength bolts, which is easy to dismantle and transport; compared with ordinary gantry cranes, it is convenient and quick to install, and economical and practical. It is suitable for road and bridge construction units that are often mobile.
Function
Girder lifting machine can be two sets with lifting prefabricated beams, can also be a single crane with double spreader lifting prefabricated beams, two sets of lifting machine at the same time lifting each of the lifting capacity is generally 450 tons, a single lifting lifting machine lifting capacity is usually up to 900 tons. It is equipped with outrigger travel, crane travel and crane lifting equipment, which can realize all-round mechanized action. It is mainly used for lifting prefabricated girders from the girder making platform to the girder storage platform, and lifting and transporting the prefabricated girders from the girder storage platform to the girder transportation vehicle after the completion of maintenance. It is used as lifting equipment to complete the assembly and disassembly of bridge erectors. It is also used for erecting dry bridges with low piers.
Technical Requirements
1, The lifting mechanism and running mechanism run at a low speed to improve the precast girder alignment accuracy and reduce the impact on the structure of the girder lifting machine.
2, the internal space of the girder lifter should be large enough to meet the lifting of precast girders and the assembling of bridge erectors.
3, the main steel structure should be considered for dismantling and transportation under the premise of strength, rigidity and stability.
4, the use of two lifting prefabricated girders should meet the synchronous operation of the two machines.
Drawings
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