FGR3 - Rotary gear limit switch GIOVENZANA
The new code of our product will be a “speaking code”, in which each single number means a
specific functionality. The code provides all the information which can be used for defining the
different customization which we’ll be able to supply to our customers.
For example, our first prototype which we’ve manufactured had the following code:
FGR310604161 that means the following product description: Rotary gear limit switch for wind
turbines, with encoder, gear ratio cams group 1:60, with n.4 microswitches, equipped by single
shaft with 50mm length outside from plastic box and mounted a pinion size as Giovenzana code
16020061.
The main functionalities of our rotary gear limit switch are
two;
To monitor the position of the nacelle.
To manage the safety issues of the nacelle in order
to avoid the cables to get twisted.
About the gear wheel, it is possible to find different
gear-ratios. For the most common items this ratios can be
1:50 1:100 or 1:150, but it some situations we can have
different values (for instance ratio = 1:460 from wheel
group to cams group, using “two steps” ratios). In general,
we can manage this ratio according to the customer
requirements. At the basis of the gear wheel, you find the
bushing made by brass which receives the movement by
the shaft and drive a set of thermo-plastic gear wheels
which are responsible to mechanical drive to the encoder.
Simultaneously, you find also the thermo-plastic screw
wheels which are responsible to mechanical drive to the
cams group. The calculations for the gear-ratio (RE-shaft
ro to cam-shaft) are shown in a separate file called “table
ratio group.xls”, you could see the ATTACHMENT n.02.
29 September 2011
