1400RPM Advance Gear Box For Large Fishing Tug Engineering Boats
280KN Flywheel
Specification
| Input speed | 500-1400r/min |
| Reduction ratio | 3.65,4.042,4.5,5.05 | Trans. capacity | 2.05kw/r/min |
| 5.476 | 1.96kw/r/min |
| 6.105 | 1.7kw/r/min |
| Control way | Push-and-pull flexible shaft, electrically, pneumatically |
| Rated thrust | 280KN |
| Center distance | 630mm |
| L×W×H | 1400x1780x1530mm |
| Net weight | 6000kg |
| Flywheel | Depend on engine flywheel |
| Bell housing | NO |
Marine Gearbox HCD2700 possesses functions of speed reduction,
ahead and astern clutching and bearing propeller thrust. It is
designed of vertically offset and one-stage transmission, featuring
in compact in structure, large in ratio, and convenient in dis- and
reassembly and maintenance.
Marine Gearbox HCD2700 is suitable for large fishing, tug and
various engineering boats.
Gearbox
Gearboxes have a wide range of applications, such as in wind
turbines. Gearboxes are an important mechanical component that is
widely used in wind turbines. Its main function is to transfer the
power generated by the wind wheel under the action of wind to the
generator and make it get the corresponding speed.
Generally, the rotation speed of the wind wheel is very low, far
less than the rotation speed required by the generator to generate
electricity. It must be realized by the speed increasing effect of
the gear pair of the gear box, so the gear box is also called the
speed increasing box.
Bearing life of Gearbox
Statistics show that about 50% of wind power gearbox failures are
still related to the selection, manufacture, lubrication or use of
bearings. At present, due to lagging technical conditions and other
reasons, many of the core components of domestic units above the
megawatt level, such as motors, gearboxes, blades, electronic
control equipment and yaw systems, are imported and used in the
gears of these large wind turbines. Box bearings, yaw bearings,
pitch bearings and spindle bearings are all imported. Therefore, a
more accurate bearing life calculation method is particularly
important for the design of wind power gearboxes.
Due to the high reliability required for the bearing, the service
life of the bearing should usually be no less than 130,000 hours.
However, due to too many factors affecting bearing fatigue life,
the bearing fatigue life theory still needs to be continuously
improved. There is no unified calculation method for bearing life
theory at home and abroad that is accepted by all industries.
Factors such as the operating temperature of the bearing, the
viscosity and cleanliness of the lubricating oil, and the speed
have a great influence on the life of the bearing. When the
operating state becomes worse (temperature rise, lower speed, and
more pollutants), the bearing life may be greatly reduced. In-depth
analysis of various factors affecting the bearing life of wind
power gearboxes and researching out a more accurate calculation
method for bearing life is the top priority of the domestic bearing
industry and even the wind power industry.
