According to the operation characteristics of the belt conveyor, a special drive system is tailored. With advanced design concepts, production and processing technology and equipment, the belt conveyor special low-speed high-power permanent magnet motor drive system has formed five major machine sizes of 315, 355, 400, 500, and 560, with a torque range of 3000N·m~100,000N·m. There are more than 120 specifications of series products, which have been widely used in ports, mining machinery and other fields.
The product adopts the latest electromagnetic solution and structural design, with the advantages of energy saving and high efficiency, small size, light weight, high torque density, strong anti-demagnetization ability, strong overload capacity, easy installation, maintenance-free, high cost performance, etc. It is suitable for various low-speed and high-power belt conveyor transmission equipment.
Excellent materials for the product
NdFeB rare earth permanent magnet materials with high magnetic energy product and high coercivity, H-grade high-strength polyesterimide enameled wire, and high magnetic permeability cold-rolled silicon steel sheets are selected. The latest production and processing technology is adopted, with compact structure and low heat generation. The rotor adopts a patented combined IPM structure, which has the characteristics of wide weak magnetic speed regulation range and strong anti-demagnetization ability.
High-sensitivity positive temperature coefficient thermistors are installed to monitor the motor temperature and ensure safe use.
Using permanent magnet dedicated non-inductive inverter drive, the starting current is small, the load has no impact, the operation is simple, the performance is reliable, and the operation is safe and stable.
The belt conveyor adopts a dedicated low-speed high-power permanent magnet drive system with significant advantages:
- Simplified the equipment structure and increased the reliability of the equipment;
- It overcomes the problem of complex gearbox maintenance and basically achieves maintenance-free operation;
- High system reliability, low maintenance cost, fewer equipment spare parts, higher system efficiency, and effective energy saving;
- Save space;
- A higher torque-to-inertia ratio can be obtained, which facilitates rapid control;
- Low vibration and low noise.
Product advantages
Energy-saving and high-efficiency
The low-speed, high-power permanent magnet drive system for belt conveyors adopts an optimized design. The motor itself has a high efficiency, which can reach 93%-97%, and a high power factor, which can reach 0.99, which increases the proportion of active power in the system. At the same time, since there is no need for gearbox transmission, the transmission efficiency of the whole machine is higher than that of the high-speed motor + gearbox solution.
During the entire operation process of the belt conveyor from starting to running to stopping, the average load rate of the motor is about 40%, and the maximum load rate is less than 60%. Since the efficiency and power factor of the asynchronous motor are closely related to the load rate, when the load rate is less than 50%, the efficiency and power factor drop sharply. The efficiency and power factor of the permanent magnet motor are less affected by the load, and can maintain extremely high efficiency and power factor within the load rate of 20% to 120%.
The relationship curve between the efficiency The relationship curve between the efficiency and power factor of permanent magnet synchronous motor and the load rate
and power factor of asynchronous motor and the load rate
Under the same load and working mode, the permanent magnet direct drive system can save about 30% of power loss compared with the traditional asynchronous motor drive system!
Heavy-load starting
When the permanent magnet motor starts, the current gradually increases with the load, and there is no large current shock. Therefore, under the condition of the same line capacity, the use of permanent magnet motor direct drive can easily achieve heavy-load starting, save manpower and material resources, and improve production efficiency.
The new equipment directly uses a low-speed, high-power permanent magnet drive system dedicated to the belt conveyor, which will greatly reduce the project cost. It also reflects its energy saving and high efficiency.
The low-speed, high-power permanent magnet motor directly drives the belt, and no longer requires a reduction box, hydraulic coupling, electromagnetic coupling, friction coupling and other transmission systems. The structure is simple and the system installation precision is high, making the motor installation no longer cumbersome and saving installation costs;
Under the same working conditions, the use of a new low-speed, high-power permanent magnet motor directly drives the belt conveyor to reduce the power supply capacity and reduce procurement costs.
Direct drive
The low-speed, high-power permanent magnet drive system for belt conveyors outputs low speed and high torque, directly drives belt conveyors, and can directly replace the traditional high-speed motor + gearbox solution. The use of a low-speed, high-power permanent magnet drive system for belt conveyors greatly reduces the size and is easy to install and maintain.
Small size and light weight
Using special electromagnetic and structural design, optimizing the motor manufacturing process, fundamentally changing the electromagnetic design concept of permanent magnet synchronous motors, and improving material utilization.
The volume and weight of the low-speed, high-power permanent magnet drive system for belt conveyors can be reduced by more than half compared to the traditional asynchronous motor + reducer structure before replacement. The permanent magnet motor has a higher stator slot full rate, and the drive system is smaller, lighter, more compact, and has a higher power density, which effectively reduces material costs and improves product cost performance.
Low vibration and low noise
The permanent magnet motor is used to directly drive the equipment to run at a low speed. Since there is no high-speed running part, the noise and vibration of the motor itself are low. At the same time, other transmission devices such as reducers and hydraulic couplers are eliminated, eliminating the vibration and noise of devices such as reducers, making the entire transmission system vibrate and have lower noise.
Product Range
| Torque range | 3000～100,000N·m |
| Machine base number | 315、355、400、500、560 |
| Voltage level | 380VAC、660VAC、1140VAC、3300VAC or 6k、10k |
| Speed range | 0～60、75、90rpm/min or customized according to customer requirements |
| Cooling method | Natural cooling, water cooling |
| Installation method | Horizontal installation or according to customer requirements |
| Protection level | IP54 (higher protection level can be customized) |
| Shaft extension standard | Round shaft with keyway, hollow shaft with key, hollow shaft with internal spline |
