Table of Contents
Advertisement
protection and maintenance to make the gearless traction machine operate normally.
See Table 4 for the routine inspection contents and the relative maintenance method
Table 4 Routine inspection contents and relative maintenance method
Check
Check parts
cycle
External
Six
surface
months
Exposed
Six
fasteners
months
Six
electrical
months
connections
Six
Bearing noise
months
Six
Encoder
months
Six
Traction
months
sheave
Brake
1 month
8.2 Inspection and maintenance of brake
8.2.1 Cleaning the carbonized things on the friction plate and the surfaces of the two braking
surfaces
●
After long time running of the gearless traction machine, the brake plate surface will
be carbonized and has some black carbonized things left on the surfaces of the brake
plate, armature and the iron core because of long time friction among the brake plate,
armature and the iron core, which will affect the traction machine to reduce its brake
torque. If there is any phenomenon like above, the surfaces of the brake plate,
armature and iron core must be cleaned and maintained in time
●
The friction disc consists of splined disc and brake plate. When the thickness of the
brake plate which is adhered on the friction disc is less than 3mm, the friction disc
should be replaced to ensure the safe operation of the lift.
●
Before cleaning the carbonized things, the elevator must be stopped in order to avoid
any accidents
●
It is not allowed to operate the traction machine during the gap adjustment. At this
time, the position of the encoder is changed due to the adjustment of brake. The
self-learning is necessary after both of the brakes are well adjusted.
The maintenance steps of the brake as follows：
●
Lift the car, and then remove the wire ropes from the traction sheave.
●
Dismantle the encoder, then disconnect the lead-out lines of electromagnetic coil and
braking micro-switch from the connection box.
●
When disconnect the brake, please loosen the 4 lock bolts, then take out the whole
brake and replace the friction disc.
●
Install the new brake to the traction machine, adjust the air gaps among the friction
disc, armature and electromagnet core according to item 6.2.1.
●
Install the encoder after the adjustment of braking gap, then do the self-learning.
Check contents
Is it clean?
Is it loose?
Have the terminals come loose? Are
the cables damaged?
Listen to check if there are any
unpitched sounds except harmonic
sound?
Has the fixing of the shaft and shell
come loose?
Be wearing seriously?
Is the brake torque not big enough?
Are there any black carbonized things
on
the
brake
wheel
thickness of brake plate is less than
3mm?
Maintenance method
Clean the dust from the
machine surface(never wash
it with water)
Tighten the loose fasteners
Tighten the loose terminals
and replace the damaged
cable.
Replace bearing if it is very
serious.
Tighten it again.
Replace the traction sheave
when the traction force is not
enough.
Maintain according to the
rim?
The
item 8.2.
Advertisement
Table of Contents
