Traditional driving of belt conveyor
Traditional belt conveyor structure: asynchronous motor + reducer, hydraulic coupler to drive roller.
Special low-speed big power permanent magnet drive system for belt conveyor：
The special drive system is customized according to the operation characteristics of the belt conveyor. With advanced design concept and production processing technology and equipment, the low-speed high-power permanent magnet motor drive system has formed 315, 355, 400, 500, and 560 frame Nos, with torque ranges 3000 N · m ~ 100000 N · m, a series of products of more than 120 specifications, widely applied in the port, mining machinery, and other fields.
The products adopt the latest electromagnetic program and structural design, with characteristics of energy-saving, efficiency, small size, lightweight, high torque density, anti-demagnetization, easy installation, maintenance-free, and high cost-performance ratio. The products are suitable for a variety of low-speed high-power belt transmission equipment.
Special permanent magnet direct drive motor for belt conveyor：
The special low-speed high-power permanent magnet drive system for the belt conveyor is a high-efficiency and energy-saving direct-drive electric drive system, which directly drives the load equipment. Different from the traditional asynchronous motor, the selection of the system depends on the actual equipment speed range and the equipment load torque. The specific selection rules are as follows:
Determine the motor speed range according to the belt speed and roller outer diameter of the belt conveyor, to select the motor drive system whose speed range is not less than and closest to the actual demand. The standard rated speed is 0~60r/min, 0~75r/min, and 0~90r/min, and other speed ranges can be adjusted and customized according to the actual requirements of customers.
Confirm the torque required by the belt conveyor first to select the appropriate permanent magnet drive system. The actual torque of the equipment can also be calculated according to the parameters of the traditional asynchronous motor and the speed ratio of the reducer.
Determine the rated voltage of the motor. The common voltage of the motor under the torque of 30000N.m is 380V, 660V, and 1140V. The motor voltage above the torque of 30000N.m is 1140V, 3300V, 6kV, and 10kV. Other voltage levels can be customized according to customer needs.
The motor cooling mode includes natural cooling, forced air cooling, and water cooling, which can be selected according to customers’ actual needs.
The motors can be designed and manufactured according to the technical parameters provided by users.
If the parameters of the motor are clear, they can be selected according to this Catalog Parameter List.
| Parameters | ||
| Torque range | 3000~100,000N·m | |
| Seat No. | 315,355,400,500,560 | |
| Voltage | 380VAC, 660VAC, 1140VAC, 3300VAC or 6K，10K | |
| Speed range | 0~60, 75, 90rpm/min, or customized as per customers’ requirement | |
| Cooling type | natural cooling, water cooling | |
| Installation | horizontal installed or customized as per customers’ requirement | |
| Protection grade | IP54 (higher grades can be customized) | |
| Shaft standard | circular shaft with keyway, hollow shaft with a key, hollow shaft with internal spline | |
| Performance, cost, parameter comparisons | ||
| parameters | low-speed big torque permanent magnet motor transmission system | high-speed motor + reducer + hydraulic coupler |
| Rated power（KW） | 132 | 132 |
| Rated torque（N·m） | 20000 | 20000 |
| Rated voltage（V） | 380 | 380 |
| Current（A） | 211.5 | 240 |
| Synchronous speed（r/min） | 60 | 60 |
| Efficiency（%） | 96.4 | 93×0.9=83.7 |
| Power factor | 0.9942 | 0.85 |
| Starting torque multiple | 1.5 | 1.5 |
| Max torque multiple | 2 | 1.5 |
| Weight（t） | 1.8 | 3.2 |