256HC Mast Section Installation technology and safe operation of tower crane
(I) preparations
256HC Mast Section：
http://www.towercranesupply.com/product/256hc-mast-section-liebherr-tower-crane
1. Organize relevant personnel to learn the operation manual of the tower crane and be familiar with the technical performance of the tower crane.
2. Determine the position and installation height of the tower crane according to the situation of the construction site. (the tower crane is located in the north side of the building), and the tower crane is installed independently once with a height of 20 meters.
3. Tower crane foundation construction: the tower crane foundation is set on the old soil. The tower foundation construction process shall be carried out according to the requirements of the tower crane operation manual.
4. Preparation of tower crane installation machines and tools: one 20t truck crane, one set of common tools for fitters, one set of common tools for electricians, one theodolite, one set of movable moving hand, one set of dead moving hand, two pipe tongs, two 8-pound sledgehammers, four crowbars, two sets of wire ropes and sliding saddles, one steel tape measure, six safety belts and 16 safety helmets.
5. Introduce the power supply to the special power distribution box of the tower crane 6. Personnel organization: the tower crane installation team of the company is responsible for the installation of the tower crane used in the project, with 1 electrician, 3 scaffolders and 2 riggers on site.
256HC Mast Section：
http://www.towercranesupply.com/product/256hc-mast-section-liebherr-tower-crane
(II) safety inspection and acceptance
1. Tower crane foundation inspection: check the tower foundation concrete pressure test report, and organize the tower crane installation after the concrete reaches the design strength. The horizontal error of the upper surface of the concrete tower base shall not be greater than 0.5mm. The concrete tower base shall be 150 mm higher than the natural ground, and good drainage measures shall be taken. It is strictly prohibited to accumulate water in the tower base.
2. Carefully inspect all parts of the tower crane, structural welds, bolts, pin shafts, guide wheels, steel wire ropes, hooks, lifting appliances, lifting hydraulic climbing system, electrical equipment, etc., and timely solve any problems found.
3. Check the tower crane switch box and power supply line to ensure safe power supply during operation. Check whether the technical performance of the machines and tools installed and used is good, check whether the safety protection articles installed and used meet the requirements, solve the problems immediately if found, and ensure the safety of the machines and tools and safety protection articles installed and used in the installation process.
4. During the installation of tower crane, the site must be kept clean and orderly, so as not to hinder the operation and affect the safety. Set up the warning line in the operation area, and assign a special person to be responsible for the warning, so as to prevent irrelevant personnel from entering the installation site of the tower crane.
5. The installation of tower crane must be carried out in the daytime, and should avoid rainy, windy and foggy weather. If the weather changes suddenly during the operation, the operation should be stopped.
6. The personnel participating in the installation and demolition of tower crane must be specially trained by the labor department, and take the post with certificate after passing the examination. The personnel participating in the installation and dismantling of tower crane must wear safety helmet, safety belt, antiskid shoes and work clothes. During the operation, unified command and action coordination are required to prevent accidents.
7. Anti collision measures for tower crane operation. The minimum erection distance between the tower and the tower shall ensure that the minimum distance between the end of the tower crane arm at the low position and the tower body of another tower crane is not less than 2m, and the minimum distance between the tower crane at the high position (the hook rises to the highest point) and the tower crane at the low position is not less than 2m in any case in the vertical direction.
256HC Mast Section：
http://www.towercranesupply.com/product/256hc-mast-section-liebherr-tower-crane
