The successful development of the permanent magnet built-in type mine hoist completely subverts the traditional hoist, made of the principle of the drum, as the outer rotor of perm-anent magnet motor, the working winding coil is installed in the stator. The permanent magnet built-in type mine hoist is manufactured by multi-stage, rated frequency of 10Hz low frequency permanent magnet synchronous motor, and then use the low frequency inverter for speed regulation. Compared with the traditional hoist, the permanent magnet built-in type mine hoist has broken through a number of key technologies, leading the international product technology; advantages of traditional hoist cannot be compared.
Contrast Advantage
Example: JK-3*2.2P, vertical shaft deep is 500m, at the speed of 3m/s, the load of 135KN, the voltage is 660V, with four-quadrant converter.
Contrast
content |
Model
of Permanent Magnet Motor Built-in Type Mine Hoist: JKN-3*2.2P |
Model
of Traditional Type of Mine Hoist: JK-3*2.2P |
Conclusions |
Motor
Power |
405KW |
450KW |
Down
10% |
Full-load
Current |
376A |
559A |
Down
33% |
Overall
Efficiency |
95% |
77% |
Up
23% |
Power
factor |
0.99 |
0.8 |
Up
24% |
Energy
Saving |
It consumes
16.3 KWH to complete a lifting (full load) and a lowering (no load) process |
It consumes
22.3 KWH to complete a lifting (full load) and a lowering (no load) process |
Energy
saving 37% |
Noise |
About
65db |
About
85db |
Low
noise |
Total
Weight |
47
ton |
55
ton |
Down
15% |
Area
Covered |
56㎡ |
80㎡ |
Basic investment reduced by 30% |
Install |
3
Days |
5-7
Days |
Greatly
shorten the construction period, saving materials and labor |
Maintenance |
Maintenance-free |
Check
the accelerator and coupling regularly, change gear oil, consume material and
manpower |
Save
materials and labor |
Security |
Even
if the brake fails, it can slow down and prevent galloping |
Safety
brake failure can lead to gallop |
Enhanced
security |
Speed
Precision |
0.003-3m/s |
0.3-3m/s |
Up
to 100 times |