ZIEHL-ABEGG ZAS Series, Изменение первоначальной инструкции по эксплуатации

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4.3 Comprehensive fl ank backlash measurement
4.3.1 Tools required
•
Dial gauge
•
Screw clamp
•
Flat wrench, size 10 mm
•
Light
4.3.2 Requirements
"
the ropes are removed from the traction sheave
"
operating brake (drum brake) closed, thus arresting the worm shaft
"
safety brake open
"
gearbox temperature must be approx. 20 ° C to 25 ° C
4.3.3 Procedure
1. Attach a suitable measuring stop to the traction sheave, e.g. screw clamb
2. Put a marking on the measuring stop (measuring point). This marking acts as the measuring
point for the dial gauge
3. Measure the outer diameter of the traction sheave D
a
and the distance a from the outer diameter
of the traction sheave to the measuring point.
4. Fix a dial gauge with magnetic holder to the gearbox housing and attach the dial gauge at the
measuring point, see Figure 3 - Structure of the measurement.
Figure 3 - Structure of the measurement
5. The traction sheave is moved manually by the rim in one direction with around 20 N to 50 N of
force until a stop is detected. This stop point is the reference for the measurement. The traction
sheave is then moved in the other direction until it reaches a stop again. The measured value
corresponds to the backlash
c
meas
.
6. Perform a total of at least 6 measurements, evenly spaced around the circumference
( c
meas_1
- c
meas_6
).
7. The largest measured value C
meas
is then used to calculate the current fl ank backlash c
curr
, see
“ 4.3.6 Calculation of current fl ank backlash ” .
8. The calculated fl ank backlash c
curr
is crucial for determining the maximum wear.
The fl ank backlash
c
curr
must be less than the maximum permitted fl ank backlash
c
max
!
9. For the fl ank backlash measurement an additional optical evaluation of the gear teething is
mandatory. Therefore the name plate cover has to be unscrewed. With a suitable light the
teething can be observed. Now the worm wheel should be moved by means of the hand wheel
for one turn to observe possible pitting on one side of each tooth. After that the process should be
Service instructions ZAS0, ZAS1, ZAS2, ZAS3 Flank backlash measurement
A-TIA19_07-GB 1936 Index 001 Part.-No. 01013457-GB
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