The single main beam gantry crane is mainly composed of a mast, a crane trolley, a cart operating mechanism, a driver's cab and an electrical control system.
The mast is a box-shaped single main beam and two-leg structure. When the lifting capacity is less than 20t, the trolley adopts the vertical reverse roller type, and when it is greater than 20t, the trolley adopts the horizontal reverse roller type and runs on one side of the main beam. The main beam adopts the single-beam off-track form. The outriggers and the lower cross beam form an L-shape. Both sides of the outriggers are generally cantilevered. The ability to cross the span is strong when lifting objects, which is convenient for transporting objects from the span to under the cantilever. The trolley is suspended from the side, and the spreader is arranged on the side of the main beam. When the lifting capacity is ≤20t, the vertical anti-roller two fulcrum form is adopted, and when the lifting capacity is >20t, the horizontal anti-roller three fulcrum form is adopted.
The operation method adopts a closed driver's cab with adjustable seats, insulating mats on the bottom plate, and tempered glass for window glass, which can be equipped with heating and cooling air conditioners, buzzers, walkie-talkies and other items according to user requirements.
There are two forms of power supply: cable reel and high-altitude sliding line.