In order to ensure the safe production of tower crane, we must do the following
1) 1 annual inspection and 1 comprehensive and in-depth inspection every 4 years. The annual inspection and the inspection after the installation of each transfer site shall be carried out by the relevant lifting equipment safety inspection Department of the local labor bureau.A comprehensive and in-depth examination in 4 years, in addition to the staff of the Labour Bureau, can also invite engineers and technicians with experience in the design and installation and use of Tower cranes.
The annual inspection and the major inspection of 4 years should make an authoritative assessment of the technical status of the tower lifting, and point out in some detail the potential potential dangers so that the timely and thoughtful overhaul can eliminate the accident in its infancy.
(2) The tower crane driver must be a qualified officer with professional training and certain driving experience who has reached the age of 18. Each tower crane is provided with a tower crane working log.
The tower crane driver on duty should carefully report the tower crane working situation, environmental conditions, the operation characteristics of the tower crane institutions and the maintenance carried out.
(3) Before leaving the aircraft at the end of the working class, the rail clipper shall be clamped tight to prevent sudden strong winds at night and the tower crane shall be thrown over by the wind.
(4) When multiple towers are built around an engineering project, the minimum safe operating distance between the adjacent parts of the two towers is generally stipulated in China as 5 M. Recently, foreign countries have stipulated that the minimum distance between the two adjacent towers is 2 M, and the minimum clearance distance between the bottom of the components lifted by the tower and the highest point of the adjacent tower(the top part of the tower) is also 2 M.
The author believes that as long as the focus and careful operation, can be handled in accordance with this new foreign regulations. According to our country's usual regulations, tower lifting is not allowed to transport operators.
However, foreign countries make new regulations from the actual point of view: in order to meet some specific conditions, tower lifting can also be promoted to operators. Its specific conditions are as follows.
(1) The bottom of the lifting basket for carrying persons shall be fitted with a spring buffer, surrounded by a high and closed grille enclosure, a secure sling and a safety shield.
(2) The lifting basket of the hoisting personnel shall be inspected by a professional of the security inspection department two weeks before the first use.
(3) The tower crane should also be inspected by full-time personnel of the security inspection department before carrying out the first lifting of personnel.
Recent information from abroad also shows that under the conditions of meeting some of the above requirements, a concrete Hopper equipped with a special operating platform can be used.
When a tower is hoisted to carry concrete, it can also carry a concrete worker to the pouring site. Concrete pouring and vibration(Figure 3), which eliminates the need to set up operating platforms for concrete pouring along large templates, will simplify construction and save costs. This experience deserves attention and emulation.
