290HC Mast Section Introduction of professional information about the lifting capacity of tower crane
The lifting weight of tower crane is the weight that the hook can lift, which includes the weight of sling, sling and utensil. The lifting weight changes with the change of the range, because each crane has its own corresponding table of lifting weight and lifting range, commonly known as office curve table.
290HC Mast Section：
http://www.towercranesupply.com/product/290hc-mast-section-liebherr-tower-crane
The lifting capacity of tower crane includes two parameters: the maximum lifting capacity and the maximum range lifting capacity. The maximum lifting capacity is confirmed by the preset structure of the crane, mainly including its wire rope, hook, boom, crane structure, etc. The lifting point must be in a small position. The maximum lifting capacity is not only related to the preset structure of the crane, but also to its tipping moment, which is a very close parameter variable. The lifting capacity of tower crane varies with the number of axle groups of hook.
Two ordinary ropes are twice the lifting capacity of single rope, four ropes are twice the lifting capacity of two ropes, etc. Changes can be made on demand. In order to avoid the tower crane lifting weight exceeding its maximum lifting weight, all tower cranes are equipped with weight limiters, some are called force measuring rings, and multiple limit switches are installed in the weight limiters. In addition to the maximum fixed weight of the limit tower crane, the weight limit can also be applied during high-speed lifting and medium speed lifting. The lifting weight is the lightest at high speed, the medium speed and the low speed.
290HC Mast Section：
http://www.towercranesupply.com/product/290hc-mast-section-liebherr-tower-crane
