What is the maximum lifting capacity of the tower crane What is the maximum weight of the tower crane?
The position of the two adjacent rods should be staggered, should not be set in the synchronization, the synchronization of a vertical separation of the two joints in the height of the side of the length of the function of the population can not be less than 0
See you want to engage in what kind of work later, beginner or to the network to see some teaching video strike, the general professional will not have such a large span, mechanical and construction is certainly not the same. Or choose a good Ding Dan Chi stalk 佾 flying when the direction of twitching. There are many online video can refer to.
Construction site special types of workers operating certificates of the system of the first system The system applies to the construction of special operations personnel supervision and management. The second construction of the lifting and vertical transport machinery drivers, the Secretary of workers, lifting hoisting (installation) workers, signal commanders, lifting, electrical, welder, climbing operations personnel and other special operations personnel, must all hold "Special operations operating permit" induction. The project department for the special operations personnel to establish management files, to ensure that certificates. Article 3 Personnel who have obtained the "Special Operation Certificate" shall be engaged in the relevant special operations, formulate special operating procedures, arrange labor protection articles according to regulations, strictly manage special operations personnel, and combine the characteristics of the project to establish special types of employment
