Lifting capacity refers to the weight that the hook can lift, including the weight of slings, spreaders and containers. The lifting capacity changes with the change of lifting amplitude, so each crane has its own corresponding lifting capacity and lifting amplitude table, commonly known as working curve table.
The lifting capacity includes two parameters: the maximum lifting capacity and the maximum lifting capacity.
The maximum lifting capacity is determined by the design structure of the crane, mainly including its wire rope, hook, boom and lifting mechanism. Its lifting point must be in a small position.
The maximum lifting capacity is not only related to the design structure of the crane, but also related to its overturning moment, which is a very important parameter.
The lifting capacity of tower crane varies with the number of pulley blocks on the hook. Generally two ropes are twice as heavy as a single rope, four ropes are twice as heavy as two ropes, and so on. Can be modified as needed.
In order to prevent tower cranes from lifting beyond their maximum lifting weight, all tower cranes are equipped with weight limiters, some of which are called lifting rings. There are many limit switches in the weight limiter. In addition to limiting the maximum rated weight of tower crane, it can also limit the weight during high-speed lifting and medium-speed lifting. The lifting weight is lightest at high speed, heaviest at medium speed, and so on. , the heaviest at low speed.
Want to know more about the "Regulations on Lifting Weight of Tower Crane" and other construction information, you can search in Zhong Da Consulting Building.
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