misia XM SERIES, Инструкция по установке, эксплуатации и обслуживанию

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ELECTRIC WIRE ROPE HOIST
XM SERIES
Pulley - Check each rotating pulley for smooth
running; in case of irregularities, disassemble
it and check the relevant bearing. Check the
wear of the groove (the permitted groove wear of the
pulley is 25% of the original dimension of the pulley).
Pulleys with cracks and breaks on the edges must not
be used.
Drum - Check tightening of the rope fastening
screws and the wear.
Check the integrity of the thread.
Gearbox - Check for abnormal vibrations
which may be caused by damage of a bearing;
in this case, disassemble the gearbox to
replace the bearings.
NB: For the hoists 308÷525 the gearbox is
outside the hoist while for the hoist type
740÷1125 it is inside the rope drum.
Wheels - Check the wheels flanges and the
rolling surfaces for wear; if the thickness of the
flange and/or of the rolling surface shows higher
wear than shown in table 59 and 60) the wheels must
be replaced. Verify the running noise of the bearings;
an abnormal noise means that the bearing must be
replaced. Check the wheel/axle and axle/gearbox
clearances; the presence of clearances means that the
axle and/or the wheels must be replaced.
4. OPERATION AND MAINTENANCE INSTRUCTIONS
Stoppers- Check that the end stoppers are
not bent and firmly fastened to the structures.
Furthermore, check that the stopper does not
show signs of breaks or permanent distortion and is
properly fixed to its support.
Electric equipment - If the electric
equipment is included in the supply, check the
moving parts of the contractors for smooth
movements; otherwise the electromagnet might not
have strong enough pressure between the contacts.
It is also necessary to check the cleanness of the
contact surfaces between the stator and rotor, in order
to prevent the film formed by rust inhibitors collecting
dust and causing the contractor to stick.
Never lubricate the contacts with oil, which can
carbonise and offer resistance to the passage of
current, causing local overheating which shortens the
life of the electromagnetic switch. Remove oxidation
with a very fine file, and never with sandpaper or similar.
In addition, check the contacts for wear, replacing
them if (particularly in case of irregular wear) as this
prejudices the alignment of the assembly, or weakens
the pressure spring so that the two contact surfaces
are not always in contact. Check auxiliary contacts with
the same procedure. In case of disassembly, handle
the coil very carefully to avoid damaging the winding,
especially its ends. To avoid loose connections,
overheating or noise, check the correctness of the
supply voltage of the coils.
Limit number of visible broken wires
Table 9
Number of load
bearing
wires in outer
strands
1)
Typical example
of rope
construction
2)
Number of visible broken wires
3)
, due to rope fatigue in a
lifting device causing the obligatory replacement for:
Mechanism type group
M1, M2, M3, M4
Mechanism type group
M5, M6, M7, M8
equal lay
incrociato
equal lay
parallel
equal lay
incrociato
equal lay
parallel
over a length of over a length of
n
6
d
30
d
6
d
30
d
6
d
30 d
d
6 d
d
30
d
51 <
n
< 75
6x19 (19/9/1)
*
3 6 2 3 6 12 3 6
76 <
n
< 100
4 8 2 4 8 16 4 8
101 <
n
< 120
8x19 (9/9/1)
*
5 10 2 5 10 19 5 10
6x19 (12/6/1)
6x19 (12/6+6F/1)
6x25FS (12/12/1)
*
121 <
n
< 140
6 11 3 6 11 22 6 11
141 <
n
< 160
8x19 (12/6+6F/1)
6 13 3 6 13 26 6 11
161 <
n
< 180 6x36 (14/4+7/7/1)
*
7 14 4 7 14 29 7 14
1)
Filler wires are not considered as load-bearing wires and are therefore excluded from the inspection. In multilayer ropes, only the visible
external layer is to be inspected. In ropes with a steel core, this is considered as an internal strand and therefore not considered.
2)
To calculate the number of broken wires round the value to an integer. For ropes with external wires with a larger section than normal, the
special construction is downgraded in the table and indicated by an asterisk
*
.
3)
A broken wire may have two visible ends..
d
= rated rope diameter.