Manitowoc MLC150-1, Руководство по техническому обслуживанию

Страница: 141 / 206

Manitowoc
Published 03-21-2021, Control # 264-01
5-43
MLC150-1 SERVICE/MAINTENANCE MANUAL HOISTS
5
The wire rope must be taken out of service when it has the
following number of broken wires (see
Figure 5-27 for an
explanation of lay length):
• Running Ropes—Six randomly broken wires in one lay
length or three broken wires in one strand in one lay
length.
• Standing Ropes (pendants)—More than two broken
wires in one lay length in sections beyond the end
attachment, or more than one broken wire at the end
attachment (see
Figure 5-28 ).
• Rotation-resistant rope—Two randomly distributed
broken wires in six-rope diameters or four randomly
distributed broken wires in 30-rope diameters.
• All ropes—One outer wire broken at the point of contact
with the core and protruding or looping out of the rope
structure. Additional inspection is required.
• End attachments (see Figure 5-28 )—When more than
one broken wire appears at the attachment (indicated by
red arrow), replace the rope or cut off the affected area
and reattach the fitting.
Rope That Has Been Idle a Month or More
Wire rope must be given a complete inspection if it has been
idle for a month or more. The inspection must be performed
by a qualified inspector looking for the damage identified
under both daily and periodic comprehensive inspection.
NOTE: Wire rope may be purchased through Manitowoc
Crane Care Lattice Team.
Distributing Wire Rope Wear
Wire rope wear at the “critical wear points” can be reduced
and the life of the wire rope extended by moving the rope at
regular intervals so that different sections of the rope are
subjected to the wear points. This practice can also help
correct spooling problems and rope vibration.
To move the wire rope, cut off a piece of the rope at the worn
end and refasten. The piece should be long enough to move
the wire rope at least one full drum wrap.
If the wire rope is too short to allow cutting off a piece,
reverse the rope end for end and refasten it.
Item Description
1 Swagged Socket
2 Wedge Socket
3 Poured Zinc Socket
4 Hand-Spliced Socket
5 Button Socket
FIGURE 5-28
REFERENCE
ONLY