What are the two types of single-arm gantry cranes?

Single-arm gantry cranes are also a very popular type of port crane. The bridge is supported by legs on both sides on a ground track or foundation. It has the function of running along the ground track, and railway vehicles or other ground vehicles can pass below. What are the two types of single-arm gantry cranes? We will give you a brief introduction.

Some single-arm gantry cranes use a horizontal luffing system. There are mainly two types:

1. The center of gravity of the weight and the arm system has almost no vertical displacement during the luffing process. One of the methods is to add a movable counterweight to balance the rise and fall of the combined center of gravity when the arm system is pitched. This method is more convenient to install, more reliable to work, and widely used. The second method is to rely on the structural characteristics of the arm system to ensure that the moving trajectory of the combined center of gravity during the luffing is close to the horizontal line, without a movable counterweight.
2. The load to be hoisted moves along a trajectory close to the horizontal line during the luffing process. The compensation method can be used. The compensation method is to automatically retract and release the corresponding lifting rope during the luffing process through a special rope storage system to compensate for the vertical displacement of the sling caused by the lifting of the boom. Another method is to use the combined boom method. Please call us for details.