Bridge erecting machines and beam lifting machines are both large-scale lifting equipment used in the construction of highways, railways, and high-speed railway bridges. Bridge erecting machines are also called highway bridge erecting machines, conventional railway bridge erecting machines, and passenger dedicated railway bridge erecting machines. Beam lifting machines are also called road bridge gantry cranes, road bridge gantry cranes, and road bridge gantry cranes; Some people often confuse two types of lifting equipment. Today, we will explain in detail the differences and division of labor between bridge erecting machines and beam lifting machines in highway, railway, and high-speed railway bridge construction.
A gantry crane, also known as a gantry crane, belongs to the category of gantry cranes in terms of crane types. The appearance looks similar to a gantry, and the middle is used to lift and move goods back and forth, mainly relying on the cooperation of electric hoists and small cars for the large car to move. The entire work is repeated back and forth on the track. There are two types of gantry cranes: private box style and flower rack style. If the lifting capacity requirement is not very high, try to use a gantry crane. The main characteristics of the flower rack lifting machine are low cost, small overall weight, high economy, and convenient installation and transportation.
The bridge erecting machine is mainly used for erecting bridges, lifting concrete beams to designated positions for adjusting direction, and is supported by four pillars. The main function of the bridge erecting machine in the process of highway bridge construction is to transport prefabricated beams to the bridge piers. And the gantry crane lifts the beam from the ground and hands it over to the beam transport vehicle, which then transports the beam to the bottom of the bridge erecting machine. The two work together in coordination. There are several types of bridge erecting machines, depending on their walking mode. Some bridge erecting machines rely on driving wheels to move, while others have guide beam structures. The lifting machine is divided into box structure and truss structure. According to the tonnage, electric hoists are used for small tonnages, and lifting carts are used for large tonnages.
The similarity between bridge erecting machines and beam lifting machines is that they both belong to lifting machinery and are used to transport bridges. Both can adopt a flower rack structure, which is relatively low in cost and convenient for transportation and installation. The main beam structures of the two are also the same, which can be single beam or double beam structures. The difference between a bridge erecting machine and a beam lifting machine is that the bridge erecting machine is used on the site of road and bridge laying, while the beam lifting machine is used in the bridge factory, and there is also a beam transport vehicle between the two. The division of labor between the bridge erecting machine and the lifting machine is that the bridge erecting machine is responsible for laying the bridge on the bridge piers, while the lifting machine is responsible for lifting the bridge onto the beam transport vehicle.