Row crane selection should pay attention to the problem

The user should appropriately raise the requirements for the working level of the crane according to this standard, and if necessary, it is necessary to improve the level of work of each institution. To ensure that manufacturers can design and manufacture according to this requirement.

The working level of the crane. It is determined by two factors: the level of the hanging crane and the level of the hanging load. The level of hoisting is used to indicate the busyness of the hoisting work, which is determined by the total number of working cycles of the hoisting, which can be estimated by the number of years of use (the number of years before the hoist is scrapped or updated), and the average annual The number of working days, the average of the number of lifting work cycles per working day, is the product of three numbers. The load status level of the crane indicates the severity of the lifting load of the line.

Note: You only need to make an estimate for the above two calculations, and you don't need to make a very accurate calculation.

The working level of the hanging mechanism. It is only an evaluation of each institution as a whole, which roughly shows the design life of the organization I, the working hours, and the load state level f of the mechanism, which reflects the level of the load and the load spectrum coefficient. The overall status of the agency's work as determined.

Similarly, two calculations for the organization's usage level and the agency's load status level are only needed for estimation, and do not require very accurate calculations.

Similarly, two calculations for the organization's usage level and the agency's load status level are only needed for estimation, and do not require very accurate calculations.

If the user is unable to provide the relevant data of the required crane, and thus cannot select the working level of the crane or its organization by calculation and checklist as described above, it can also refer to Appendix A and Appendix B. The relevant information in the paper selects the desired level of work and the level of work of the institution. However, it must be stated that these selection guidelines in Appendix A and Appendix B are not binding, but give a reference example of the selection. The working level of the organization of the cranes determined in the bidding documents and the order form can only be proposed and finalized by the users.

The crane user should specify the lifting weight, span, lifting height and the selected working level when ordering, and provide the process information such as the working environment and usage status of the workshop and the site.