L46A1 Mast Section To understand the working principle of tower crane swing mechanism and design of tower crane swing mechanism

26-09-2019

In use, the tower crane needs to use swing equipment. What is the working principle of the tower crane swing mechanism? How to design? What is the difference between light, medium and heavy tower crane swing mechanism? Tower crane manufacturer editor for you one by one resolved.

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The working principle of the tower crane rotary mechanism:
The tower crane implements a tower rotary mechanism, which guarantees its coverage by rotating the lifting arm. The generation of rotary motion is through the upper and lower rotary supports mounted on the inner and outer rings of the rotary support, respectively, and the rotary mechanism drives the Pinion, and the Pinion and the large gear of the rotary support engage to drive the upper and lower supports of the rotary support. The motion.
Design of tower crane swing mechanism:

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Usually the rotary mechanism consists of a rotary motor, a hydraulic coupling, a planetary speed reducer, and a small gear. In addition, according to needs, the rotary mechanism is equipped with safety devices such as a limit moment limiter, a rotary buffer device, and a rotary limiter. In order to prevent the lifting arm from sliding under the influence of strong winds, the rotary mechanism is equipped with a stopper. However, the arm frame should be allowed to rotate freely with the wind under non-working conditions.

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The difference between light, medium and heavy tower swing mechanisms:
Light and medium-sized tower cranes are generally only equipped with 1 set of rotary mechanisms. The heavy tower crane is equipped with 2 sets of rotary mechanisms. The Super heavy tower crane has 3 ~ 4 rotary mechanism according to different lifting ability and moment of inertia. Using more stable speed regulation system and pole changing motor, can start and brake smoothly.

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