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Structural performance of rigid crane
In the structure of rigid crane, thin-walled sections and special-shaped steel are used to reduce the splicing welds of the structure and improve the fatigue resistance.
The rigid crane adopts various new materials of high-strength low-alloy steel to improve the bearing capacity, improve the stress conditions, reduce the dead weight and increase the appearance.
Jib crane has the advantages of compact structure, light and beautiful, convenient disassembly and assembly, simple adjustment, stable operation, large supporting range and so on. In order to make small and medium-sized
The structure of the crane trolley with tonnage shall be simplified as much as possible, and the size and height of the crane shall be reduced to reduce the wheel pressure. Electric hoist has been widely used as the crane in foreign countries Lifting mechanism.
In order to reduce the dead weight, improve the bearing capacity, improve the processing and manufacturing conditions, and increase the yield of products, the parts and components should be welded instead of cast as far as possible, such as deceleration
The shell, reel, pulley, etc. are all welded. The gear of the reducer adopts hard tooth surface to reduce the dead weight, reduce the volume and improve the bearing capacity
Force, increase service life. The application range of wave pressure push rod disc brake is also increasing. In addition, the motors used by all mechanisms are geared towards high speed
Development, so as to reduce the base number of the motor, reduce weight and overall dimensions, and can be equipped with brakes with small braking torque.
In terms of electric control, boom cranes should develop speed control systems and electric control systems with good performance, low cost and high reliability, and develop semi-automatic and full-automatic operation
Vertical. Adopt electro-mechanical and hydraulic integration technology to improve the service performance and reliability and increase the function of the crane.
