Modeling and Optimization of Pulling Point Position of Luffing Jib on Portal Crane

Portal crane is the most commonly used equipment for cargo handling of large mixed loading ships with its advantages of flexible and convenient operation, wide adaptability, and high loading and unloading efficiency. The reasonable modeling and optimization of the pulling point position of luffing jib of portal crane can reduce the rack force of portal crane and the power consumption output of the rack and pinion during the luffing process. Based on penalty function optimization, the interior point method is used to optimize the pulling point position of luffing jib. Compared with the initial design, the race force of the luffing jib is reduced to a certain extent. In addition, the consistency between the finite element analysis results and the optimization results can be verified, and the effectiveness of the optimization design is also proved through the finite element analysis of portal crane.

Research on safety evaluation of portal crane based on energy saving and environmental protection

Crane is an important equipment of national economic construction. Compared with the faulty crane, the crane with good performance has lower energy consumption and less pollution to the environment. In this paper, the analytic hierarchy process is used to evaluate the safety of portal crane, to help users find and deal with the existing problems of crane in time, and to play a positive role in the sustainable development of national economy.

Self-weight Balance Design of Portal Crane Boom

During the luffing of the portal crane, the height changing of the center of gravity of the boom needs to consume extra energy, which not only wastes energy, but also makes the luffing drive system need to use a larger motor. This paper uses the lever-movable counterweight balance method to design the self-weight balance of the portal crane, and verifies that the designed jib self-weight balance system meets the requirements of the maximum height deviation, unbalanced torque and comprehensive unbalanced torque by evenly taking points. The power and unnecessary energy consumption of the luffing drive mechanism are reduced.

The Application Research on Safety performance Evaluation of Portal Crane based on Reliability Evaluation and risk Assessment

With the continuous development of modern industry in our country, the use of cranes is becoming more and more common, but the unsafe incidents of cranes occur from time to time, which makes the risk assessment of cranes more and more important. Crane risk assessment has become an important part of crane risk management. In order to further promote the development of crane risk management, this paper tests the feasibility and effectiveness of this method through the study of fuzzy safety evaluation method and the direct application of this method to the risk assessment of portal crane.

Research on Wind Disaster Accident of Port Crane

Gust is the most serious natural disaster that threatens the safety of port portal crane. The wind resistance of some port cranes is not optimistic, and wind disaster accidents occur frequently. Based on the analysis of some classic cases of wind disasters at home and abroad, this paper finds out the weak links of the wind proof ability of port portal crane, and puts forward the countermeasures to improve and enhance the wind proof ability of port portal crane.