High Accuracy Anti Dust Slew Drive Gearbox For Tower Concentrated
Solar Power
Slew Drive Gearbox Description
Heliostat drives are critical to tower power plant efficiency. In a
tower CSP plant, tens of thousands of heliostats concentrate solar
radiation on a heat absorber at the end of the heat absorption
tower to collect high temperature and collect heat. In order to
ensure continuous and stable collection of heat, the heliostat
should track the position of the sun at all times, and move in the
horizontal azimuth and pitch directions (dual-axis) through the
transmission device.
Common transmission components of tower heliostats---Rotary reducer
At present, the most common transmission component in the heliostat
system is the device called the rotary reducer as shown in the
figure below. The rotary reducer is generally driven by a motor to
drive the rotation of the heliostat in the biaxial direction. As a
kind of precision machinery, the application of the rotary reducer
in the solar thermal power generation industry needs to control the
tracking accuracy within 1mrad. The double-enveloping worm gear has
a large meshing area with the tooth surface, higher transmission
precision, and strong impact resistance. Its low wear rate can
ensure the accuracy and life under long-term use conditions, and is
more suitable for the northwest region where the domestic CSP
station is located. harsh environment.
In the tower power station, the driving components in the
horizontal orientation mostly use the rotary reducer, but the pitch
angle can choose the push rod or the rotary reducer.
Parameters of SE Series Slewing Drives
| Model | Ratio | Rated Output Torque(N.m) | Tilting Torque (N.m) | Holding Torque (N.m) | Axial Load (kN) | Radial Load (kN) | Efficiency | Precision (°) | Self-locking | Weight (kg) |
| 1” | 32:1 | 400 | 1000 | 1800 | 22 | 12 | 40% | ≤0.1 | Yes | 6 |
| 3” | 31:1 | 600 | 1500 | 3000 | 30 | 16 | 40% | ≤0.1 | Yes | 8 |
| 5” | 37:1 | 800 | 6000 | 9200 | 68 | 27 | 40% | ≤0.1 | Yes | 12 |
| 7” | 57:1 | 2000 | 13500 | 13200 | 132 | 58 | 40% | ≤0.1 | Yes | 21 |
| 9” | 61:1 | 4400 | 45000 | 30800 | 340 | 130 | 40% | ≤0.1 | Yes | 49 |
| 12” | 78:1 | 5800 | 54400 | 40560 | 480 | 190 | 40% | ≤0.1 | Yes | 61 |
| 14” | 85:1 | 6550 | 68000 | 54200 | 680 | 230 | 40% | ≤0.1 | Yes | 63 |
| 17” | 102:1 | 9400 | 135600 | 65040 | 980 | 390 | 40% | ≤0.1 | Yes | 105 |
| 21” | 125:1 | 16000 | 203400 | 81000 | 1600 | 640 | 40% | ≤0.1 | Yes | 149 |
| 25” | 150:1 | 21000 | 271160 | 89000 | 2400 | 950 | 40% | ≤0.1 | Yes | 204 |
Features
1. Hour-glass worm for competitive gear contact and life, and
static load capacity
2. Multiple precision levels: variable backlash for different
application needs
3. Standard sealing and grease fill
4. Great anti-water and anti-dust design, IP66
5. Self-locking, no need of break
6. Envelop worm
7. Key applications: PV Solar, Aerial Work Platforms, Truck Cranes,
Marine Cranes
