Suppliers of energy feedback devices remind you that cranes are large mechanical equipment with long continuous working hours and high work intensity, resulting in high electricity consumption. With the increasingly serious problem of energy depletion, energy conservation has become an indispensable issue, and how to reduce the energy consumption of cranes has become a serious problem in the industry.
Reducing the weight of the crane, steel structure accounts for the majority of the weight, and adopting European style mechanisms can greatly reduce the weight and volume of the steel structure.
To improve the form of the drum, a large-diameter drum can be used to increase the rope capacity and reduce the size and weight of the lifting trolley.
Using new materials, such as using high-strength nylon instead of cast iron or steel, can not only extend the lifespan but also reduce noise.
Strengthen the daily maintenance of cranes and do not underestimate it. Daily maintenance can greatly help reduce structural damage and save energy for cranes.
Improvements have been made to the control system, with the speed regulation system being replaced by a variable frequency speed regulation system. Energy savings can also be achieved by installing a high-efficiency feedback device specifically designed for power overload equipment, which uses "full voltage automatic tracking" and "zero point current" processing technology to improve the quality of feedback current flowing through zero point, enhance overload feedback stability and power factor, and thus feed back the regenerated electrical energy generated during the motor speed regulation process to the grid, achieving significant energy-saving effects.
The main effects are reflected in:
(1) Accurate positioning and high efficiency
There will be no phenomenon where the motor speed changes with the load of traditional cranes, which can improve the productivity of loading and unloading operations
(2) Smooth operation and high safety
During operation, the vibration and impact of the entire machine are significantly reduced during acceleration and deceleration, which extends the service life of the crane's steel structure and mechanical parts and improves the safety of the equipment
(3) Reduce maintenance and lower costs
The service life of mechanical brake pads is extended, and maintenance costs are significantly reduced.
(4) Low failure rate
The use of squirrel cage asynchronous motors instead of wound rotor asynchronous motors avoids motor damage or failure to start due to poor contact.
(5) Low harmonic pollution
The harmonic pollution of the power supply is less than 2%, and the full load power factor is close to "1"
(6) Simplify the circuit
The main circuit of the electric motor has achieved contactless control, avoiding electrical damage caused by frequent contact movements of the contactor and electrical damage caused by contact burnout.