Due to its superior performance, the factory gantry crane has become the most widely used and owned rail crane, with its rated lifting capacity ranging from a few tons to hundreds of tons. The most common form of gantry crane is the universal hook gantry crane, and other gantry cranes are improvements on this form.
The gantry crane is a kind of heavy mechanical equipment. Its working conditions are very heavy. We must ensure that it has sufficient strength, stiffness and stability under complex and changeable load conditions. We must select and connect a metal frame that can carry the entire crane. , so that there is enough sex. The working life of a gantry crane is mainly determined by its metal frame. As long as the metal frame is not damaged, it can be used. Other devices and components will not affect its life. However, once its metal frame is damaged, it will bring serious consequences to the gantry crane.
Metal structural form of travelling gantry crane
The metal structure of the gantry crane is divided into three categories according to different stress characteristics. First, beams and trusses are the main components that bear bending moments; second, columns are the main components that bear pressure; third, bending components are mainly used to bear pressure. and bending moment members. We can design the metal structure of the gantry crane into structural type, solid belly type and hybrid type according to the stress mode of these components and the size of the structure. Next we mainly talk about solid web members. The so-called solid web members are mainly made of steel plates and are mainly used when the load is higher and the size is smaller. Its advantages are that it can be welded automatically, is simple to manufacture, has high fatigue strength, small stress concentration, wide application range, and is easy to install and maintain, but it also has the disadvantages of heavy weight and strong rigidity.
Components of the gantry crane operating mechanism
The operating mechanism refers to the mechanism that enables the crane to move horizontally, and is mainly used to move goods in the horizontal direction. Tracked operating mechanisms refer to mechanisms that move on special tracks. They are characterized by small operating resistance and large loads. The disadvantage is that the movement range is limited, while those trackless operating mechanisms can move on ordinary roads and have a wider operating range. The operating mechanism of the crane is mainly composed of a driving unit, an operating support unit and a device. The driving device is composed of an engine, a driving device and a brake. The running support device is composed of a track and a steel wheel set. The device is composed of a windproof and anti-skid device, a travel limit switch, a buffer and a track end baffle. These devices can effectively prevent the trolley from derailing and prevent the crane from being blown away by strong winds and causing overturning.
