Tower cranes take the tower body structure as the core. According to the structural and functional characteristics, the tower body is decomposed into several parts, and according to the requirements of serialization and generalization, the principle of the modular system is followed, and then each part is divided into several modules. What we have seen in many construction sites is the tower crane with the upper slewing type and the joint height. The lifting capacity of the tower crane varies with the amplitude.
The product of the lifting weight and the amplitude of the tower crane is called the load torque. The tower crane has a large lifting height and a large inertial mass for slewing and walking. Therefore, it needs to have good speed regulation performance. In particular, the lifting mechanism requires light load, fast speed, For heavy load and slow speed, installation in place and micro-motion, the tower crane adopts eddy current brake, frequency modulation, pole changing, thyristor and electromechanical combination to adjust the speed.
Tower cranes have good safety devices, such as limit devices such as lifting limiters, amplitude limiters, height limiters and load torque limiters, as well as travel limit switches, tower top signal lights, anemometers, Tower cranes have good safety devices such as windproof rail clamps, ladder guards, walkway guardrails, etc., such as lifting weight limiters, amplitude limiters, height limiters and load torque limiters. As well as travel limit switches, tower top signal lights, anemometers, windproof rail clamps, ladder guards, walkway guardrails, etc.
