Components and Working Principle of Gantry Crane

gantry cranes have become the most widely used and owned rail cranes because of their superior performance, with rated lifting capacities ranging from a few tons to several hundred tons.

Components of the gantry crane operating mechanism:

• The running mechanism, which refers to the mechanism that makes the crane do horizontal movement, is mainly used to move the goods horizontally.  
• The running mechanism of a crane consists mainly of a drive unit, a running support unit and a device.
• The drive unit consists of the engine and drive and brake, the running support consists of the track and steel wheel set, and the device consists of wind and slip resistant devices, travel limit switches, buffers and track end stops, etc.
• These devices can effectively prevent the trolley from derailing and prevent the crane from being blown away by strong winds and causing it to overturn.

Working principle of the gantry crane hoisting mechanism:

• The motor of the crane is connected together by a coupling and a reducer.
• It works by rotating the low speed shaft of the reducer to bring the reel and hook together with the wire rope and so on.
• When the motor works, the movement is transferred to the reel by rotating it in different positive and negative directions, and then the reel rolls the wire rope in or out, causing the hook to lift or lower the weight.
• The basic principle is that the rotation of the motor is transformed into the lifting and lowering movement of the load. When the power is suddenly cut, the brake is applied and the load is stopped at the specified position. When the load is raised to the limit position, the limiter is touched, stopping the hook's movement.