China Construction Group has always firmly established the overall national security concept, put safety development through the whole process of production, operation and management, and constantly strengthened the bottom line thinking and red line consciousness; Implement the fifteen measures of safety production of the State Council Safety Committee, and make overall plans to promote the investigation and rectification of hidden dangers of major accidents.2023Action, etc., to build a solid foundation for safety management; Further promote the development of science and technology, tackle the safety research topics, independently develop and apply the "China Construction Smart Security Platform" to promote the reform of safety management; Continue to carry out special education activities such as "behavioral safety star" and "safety training camp", strive to create a good safety culture atmosphere of "I am safe, you are safe, and safety is under construction", and escort high-quality development with high-level safety.
"Everyone talks about safety, and everyone will respond to emergencies". The leasing division of South China Company of China Construction Second Bureau promotes the transformation of public safety governance mode to pre-prevention, widely popularizes safety knowledge, solidly carries out safety training and emergency drills, vigorously cultivates safety culture, strictly implements various safety responsibility measures from reality to detail, and lays a solid foundation for the high-quality development of enterprises.
Liu Zhengnan, a safety supervisor in the production line, said,The building is a solidified note, and the tower crane is the conductor on the construction site. Watching the tower crane wave a long baton every day to coordinate and transport various materials and components, and ensure the normal construction work in an orderly manner, I am extremely proud as a tower crane safety management worker. Today, let Liu Zhengnan take us to see what the safety management of tower crane jacking operation has.
Tower crane, also called tower crane for short, is an important vertical transportation equipment for materials in the construction process of today’s construction projects, which has the characteristics of large volume, heavy weight, high height and dense working environment. The leasing division of South China Company of China Construction Second Bureau is mainly responsible for the leasing and dismantling of large-scale mechanical equipment, and is operating tower cranes.170The installation and disassembly work of the remaining units and tower cranes has reached the average monthly.15Number of times, the amount of lifting and node lowering operations reached the average monthly average.350Remaining sections. In order to ensure the safe and stable development of the enterprise and the safety of people’s lives and property, the Division has formulated a number of management systems around the key points and difficulties in the safety management of tower crane installation, jack-up, node reduction and demolition.
Lifting and jointing of tower crane is a dangerous operation. In order to let everyone know the safety control measures of tower crane lifting operation, Liu Zhengnan will lead everyone to use it."Mini Tower Crane" explains from the aspects of pre-operation preparation, pre-operation inspection, jack-up operation process and jack-up acceptance.
Preparation before operation
1.Pay attention to the weather and prevent the impact of bad weather;
2.Conduct safety technical disclosure and pre-shift meeting to confirm that the operation certificate is valid, the health status of personnel and the equipment are in good condition;
3.Set up a cordon and prohibit irrelevant personnel from entering.
Pre-operation inspection
1.Check the standard section for deformation and welding, and clean up the dirt;
2.Check whether the connection between the sleeve frame and the rotary lower support is firm;
3.Check whether the oil quantity of the hydraulic station is within the acceptable range;
4.Check whether the cable length meets the height requirements.
Jacking operation process
1.Rotate the lifting object to the jacking direction for balancing, and close the rotary brake;
2.Push the anti-out-of-stock, so that the jack-up beam is locked on the standard step;
3.Operate the hydraulic station for "cylinder test", and the pressure value of the oil pump should remain stable;
4.In the process of jack-up, turning, lifting and luffing are strictly prohibited;
5.Do a good job in wind speed monitoring and pay attention to weather warning in real time;
6.After the jack-up operation is finished, connect the pin shaft or bolt between the rotary lower support and the standard joint.
Jack-up acceptance
1.Measure the verticality of tower crane to ensure that it meets the specification requirements;
2.Check the safe distance of the tower group to ensure that it meets the specification requirements;
3.Complete self-inspection and joint acceptance, and use it only after it is qualified.