accuracy is not high, and the relatively large diameter ring gear, gear module
comparison, therefore, generally require the precision gear by GB/T10095.2---2001 in grades 9 or 10. However, due to
work under small gears and bearings between the ring gear impact, therefore,
bearing the ring gear tooth surface to be Angular Contact Ball Bearing
Four-point Contact Ball Bearing quenched, the small gear in general
hardness of 60 HRC, taking into account life expectancy, such as design, large
gear tooth surface hardening of the provisions of the hardness For not less
than 45 HRC.
2.4 Clearance
Yaw, and change in the propeller bearing
clearance have special requirements. Comparing with the yaw bearings, bearing
the impact of changed blade relatively large load, the wind shook the leaves
are large, bearing the requested change paddle clearance clearance should be
zero or slightly negative clearance value, so the situation in shock Bearing
may be reduced under the fretting. Yaw bearing clearance requirements for small
value, that is, 0-501 ~ m. In addition, because of the wind turbine yaw and
variable bearing the rotating propeller-driven motor drive by, bearing in small
or negative Clearance Clearance state should ensure that the drive motor can be
driven, therefore, the bearings in the assembly after the needs of air Contains
friction torque measuring activated, specific numerical torque under the
different host drive system is also different.
2.5 embalmed
Wind turbine equipment in the field, and
yaw, and change is part of the propeller bearing nude Louzaiwaimian, will be
air pollution, high-humidity environment will be of corrosion-bearing, so bare
Luzaiwaimian the yaw and variable propeller Ceramic Bearing bearings The site called for the
anti-corrosion surface
Li, the general use
of zinc processing. According to need, in the zinc deposit outside the
protection of Shuaqi treatment.
