With the development of crane technology, cranes are evolving into crane robots. Today we will talk about the new and practical development trend of cranes.
Light Self-Weight, Strong & Beautiful
The crane adopts thin-walled profiles and special-shaped steel in the structure to reduce the splicing welds of the structure and improve the fatigue resistance. Various new high-strength low-alloy steel materials are used to increase the load-bearing capacity, improve the stress conditions, reduce the self-weight and give it a beautiful appearance. The bridge structure of overhead cranes mostly adopts box-shaped four-beam structure, the main beam and end beam are connected by high-strength bolts, which is convenient for transportation and installation.
The crane further develops with new transmission parts and simplifies the mechanism. The three-in-one gear motor will be more popular, which is a combination of motor, reducer and brake. It has the advantages of compact structure, light weight and beautiful appearance, convenient disassembly and assembly, simple adjustment, stable operation, and large supporting range. This new type gear motor has been widely used as the driving mechanism in cranes.
In order to simplify the structure of the small and medium tonnage lifting trolley as much as possible, while reducing the size and height of the crane, and reducing the wheel pressure, more and more electric hoists have been used as the lifting mechanism.
In order to reduce self-weight, increase load-bearing capacity, improve processing and manufacturing conditions, and increase product yield, parts and components are replaced by welding as much as possible, such as reducer housings, coils, pulleys, etc., all use welding structures.
The gears of the reducer all adopt hard tooth surface to reduce the weight, reduce the volume, improve the carrying capacity and increase the service life.
Small Parts Size
The application range of hydraulic push rod disc brakes is also increasing. In addition, the motors used in each mechanism are developing towards high speeds, thereby reducing the number of motor bases, reducing weight and size, and can be equipped with brakes with small braking torque.
Electric Control Automation
In terms of electric control, cranes develop speed control systems and electric control systems with good performance, low cost and high reliability, and develop semi-automatic and fully automatic operation. The use of electromechanical, instrument and liquid integration technology improves performance and reliability, and increases crane functions. It also develops the control technology of fuzzy logic circuit, using neural information and fuzzy technology to find the best time to start acceleration, and input the data of the actual operation of the experienced driver's anti-sway into the system to realize the optimal control. The fuzzy control method can determine the control instructions for implementing automatic work, and digitally quantify people's subjective fuzzy quantity through fuzzy sets.