ThyssenKrupp TW63, Руководство по эксплуатации

Страница: 37 / 60

O
PERATING
M
ANUAL
TW63
M
AINTENANCE
/
SERVICE
ThyssenKrupp Aufzugswerke GmbH
7.2 Checking the backlash
Wear enlarges the backlash on the worm drive between the worm wheel and
worm shaft.
If the
wear limit value (backlash) of 1.5 mm is reached, the gear drive can
no longer be deployed for safety reasons.
Replace the gear drive.
Measurement possibility:

Take the load off the gear drive; (remove ropes from the traction sheave)

Run the measurement with the brake closed

Fit a dial gauge to the traction sheave; e.g. screw clamp

Specify the measured radius (M) and mark the measuring point
The radius ( r ) for the TW63 = 130 mm

Attach a dial gauge with magnet stator at the gear drive housing and align
to the measuring point (M).

Turn the traction sheave by hand until the dial gauge pointer moves.

Move the traction sheave back and forth until resistance is felt in both
directions. The tooth flanks of the worm wheel should have a
load of approx. 20 - 50 N.

Read off the dial gauge (ME).

Use the formula below to calculate the backlash.

This measurement is to be carried out in at least three different positions!
Backlash =
ME * r
M
M = radius
ME = measurement result
r = radius of worm wheel
All dimensions in mm
Fig. 7.2.1
Traction sheave
Worm wheel
Dial gauge
37 09-2012