The tower crane is a rotating crane whose boom is mounted on the upper part of the towering tower. It consists of three parts: metal structure, working mechanism and electrical system. The scope of work is large, mainly used for the vertical transportation of materials and installation of components in the construction of multi-story and high-rise buildings. The lifting capacity of the tower crane varies with the amplitude. The product of lifting weight and amplitude is called load torque, which is the main technical parameter of this crane. Through the slewing mechanism and slewing bearing, the tower crane has a large lifting height and a large inertial mass for slewing and walking, so it needs to have good speed regulation performance. In particular, the lifting mechanism requires light and fast load, heavy load and slow speed. Bit fretting.
Let's take a look at the safety distance of the tower crane when it is installed and arranged:
When the tower crane is arranged in a plane, a floor plan should be drawn, especially in the real estate development community, where there are many residential buildings and the tower crane is like a forest. It is also necessary to consider the safety distance of the adjacent tower crane, and ensure that it is not less than 2m in both horizontal and vertical directions Safe distance, the tower body of the adjacent tower crane and the boom can not interfere, try to ensure that the tower crane can rotate freely when the wind is too strong. The safety distance between the rear arm of the tower crane and the adjacent building is not less than 50cm. The safety distance between the tower crane and the transmission line meets the requirements.
If the safety distance between the tower crane and the transmission line does not reach the specified requirements, a protective frame shall be installed on the tower. In principle, the protective frame shall be installed when the power is cut off. Metal materials shall not be used, and materials such as bamboo poles may be used. The distance between the bamboo pole and the transmission line should not be less than 1m but also have a certain stability strength to prevent the strong wind from blowing down. Daily safety management of the tower crane is required. Only in this way can it effectively prevent the occurrence of various accidents during the use of the tower crane, and play a role in preventing accidents.
