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Permanent magnet direct-drive conveyor

The permanent magnet direct-drive conveyor has been proved by industrial tests that the parameters are reasonable, the structure is advanced, and it can fully meet the needs of underground transportation, and has been widely used in the major mines. The traditional belt conveyor system adopts asynchronous motor, hydraulic coupler and decelerator to transmit the power to the drum to drive the belt, and the obvious defects of this traditional transmission way include: The efficiency of driving system is low, and it starts unstably, and the heavy load start is difficult, directly affecting the overall efficiency of the driving system. Mine party maintains and replaces the decelerator, coupler and other parts frequently.

The driving system through technical transformation adopts the no-gear permanent magnet synchronous motor frequency conversion driving system, namely, the driving system consists of permanent magnet synchronous motor and frequency converter which are combined to realize the power transmission, and the driving system has the advantages of high efficiency, energy saving due to removal of the decelerator, hydraulic coupler; and low noise, “free” from maintenance; it also has the advantages of large output torque, smooth starting and constant torque control, etc.. Its successful research and development has made a useful exploration for our development of "green mining equipment" with independent intellectual property rights in the field of mining equipment.

Technical parameters
Product advantage
Characteristics

Description of product model

S/N	Belt conveyor specifications	Conveying capacity (t/h)	Belt speed (m/s）	Belt width （mm）	Tape model	Main motor power	Diameter of driving pulley	Diameter of idler
1	DSJ100/80/160YB	800	2.5	1000	PVC1000S	160kW	630mm	108mm
2	DSJ100/80/2×200YB	800	2.5	1000	PVC1000S	2×200kW	630mm	108mm
3	DSJ100/80/2x160YB	800	2.5	1000	PVC1000S	2×160kW	630mm	108mm
4	DSJ100/90/2×250YB	900	2.5	1000	PVC1000S	2×250kW	630mm	108mm
5	DSJ100/90/2×315YB	900	2.5	1000	PVC1000S	2×315kW	630mm	108mm
6	DSJ100/95/2×355YB	950	2.5	1000	PVC1000S	2×355kW	630mm	108mm
7	DSJ100/95/2×400YB	950	2.5	1000	PVC1000S	2×400kW	630mm	108mm
8	DSJ120/100/250YB	1000	3.5	1200	PVC1400S	250kW	830mm	133mm
9	DSJ120/110/2×200YB	1100	3.5	1200	PVC1400S	2×200kW	830mm	133mm
10	DSJ120/130/315YB	1300	3.5	1200	PVC1400S	315kW	830mm	133mm
11	DSJ120/140/355YB	1400	3.5	1200	PVC1400S	355kW	830mm	133mm
12	DSJ120/150/2×250YB	1500	3.5	1200	PVC1400S	2×250kW	830mm	133mm
13	DSJ120/150/2×315YB	1500	3.5	1200	PVC1400S	2×315kW	830mm	133mm
14	DSJ120/150/400YB	1500	3.5	1200	PVC1400S	400kW	830mm	133mm
15	DSJ120/170/2×355YB	1700	3.5	1200	PVC1400S	2×355kW	830mm	133mm
16	DSJ120/180/2×400YB	1800	3.5	1200	PVC1400S	2×400kW	830mm	133mm
17	DSJ120/70/200YB	700	3.5	1200	PVC1400S	200kW	830mm	133mm
18	DSJ80/40/55YB	400	2	800	PVC800S	55kW	630mm	108mm
19	DSJ80/48/2×55YB	480	2	800	PVC800S	2×55kW	630mm	108mm
20	DTC80/15/200SYB	150	2	800	PVC1400S	200kW	830mm	108mm
21	DTC80/15/250SYB	150	2	800	PVC1400S	250kW	830mm	108mm
22	DTL100/100/2×355YB	1000	2.5	1000	PVC1400S	2×355kW	830mm	108mm
23	DTL100/120/2×400YB	1200	2.5	1000	PVC1400S	2×400kW	830mm	108mm
24	DTL100/70/2×250YB	700	2.5	1000	PVC1400S	2×250kW	830mm	108mm
25	DTL100/80/2×315YB	800	2.5	1000	PVC1400S	2×315kW	830mm	108mm
26	DTL120/110/2×355SYB	1100	3.5	1200	PVC1400S	2×355kW	1000mm	133mm
27	DTL120/130/2×400SYB	1300	3.5	1200	PVC1400S	2×400kW	1000mm	133mm

Improving transmission efficiency, reducing power consumption, the energy consumption of Y series asynchronous motor used in the traditional drive system only reaches the international level IE1 (equivalent to the national level III energy consumption). The energy consumption of permanent magnet synchronous motor used in the system has reached the international IE4 (higher than the national level I energy consumption standards). Similarly, a set of DSJ80 belt conveyor can save power for RMB one hundred thousand per year.

The system realizes soft starting and free maintenance. The system controls the starting with frequency converter and realizes the slow and uniform starting of the system transmission. At the same time, compared with the original system, it eliminates hydraulic coupler, decelerator and synchronous gear, so the maintenance cost can be saved for at least RMB 30,000.00 to 50,000.00 per year, accordingly reducing maintenance costs.
Realize power balance—When the system uses multi-motor master-slave control drive, power balance can be achieved to avoid the damage to the motor caused by multi-motor power imbalance.

Large starting torque—The permanent magnet synchronous motor of the system can constantly output the starting torque 2.8 times higher than the rated load torque, while the starting torque of the traditional asynchronous motor is 55% of the rated load.