Manitowoc Grove TMS9000-2 Series, Руководство по обслуживанию

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Grove
Published 01-14-2021 Control # 707-01
4-47
TMS9000-2 SERVICE MANUAL SUPERSTRUCTURE
4
HOIST ROPES
Checking the Position of Sheaves and Rope
Drums
• Check the position of the hoist ropes on the rope drums
of the main hoist and the auxiliary hoist.
• Slowly turn the rope drum at least one turn in the
lowering direction. Watch the rope on the drum as you
do this.
- The rope must be wound evenly on the drum.
- The rope turns on the drum must be evenly spaced
at a distance of 0 to 2 mm (0 to 0.07 in).
- The cross-over points must be at an angle of
approximately 180°.
NOTE: The upper rope lines lie over the lower rope lines at
the cross-over points.
• Check the position of the hoist ropes on the sheaves at
the boom head and in the hook block.
• Check the sheaves for damage and wear, and check
that they run freely.
• Check the securing of the rope end in the rope end
clamp (2), (Figure 4-34) for proper seating and correct
positioning of rope.
• The rope end clamp (1), (Figure 4-34) must be attached
to the free end of the rope and the rope must be secured
around the rope wedge (3), (Figure 4-34).
NOTE: The recommended hook-blocks are designed to be
of sufficient weight to overhaul the rope properly
when using the parts of line required for the allowed
load at the chosen boom length. Operating with a
higher number of parts of line than is necessary for
a particular boom length may result in poor rope
spooling behavior and loosely stored rope, which
can result in future rope damage. If operation in
these extended ranges is desired, extra weight
should be carried by the hookblock or a heavier
hookblock should be used.
WIRE ROPE INSPECTION/REPLACEMENT
(ALL WIRE ROPE)
NOTE: For cranes equipped with synthetic rope refer to
the synthetic rope manual.
No precise rules can be given for determination of the exact
time for replacement of wire rope since many variable factors
are involved. Determination regarding continued use or
replacement of wire rope depends largely upon the good
judgment of an appointed and qualified person who
evaluates the remaining strength in a used rope after
allowance for any deterioration disclosed by inspection.
Wire rope replacement should be determined by the
following information excerpted from a National Consensus
Standard as referenced by Federal Government Agencies
and as recommended by Manitowoc. All wire rope will
eventually deteriorate to a point where it is no longer usable.
Wire rope shall be taken out of service when any of the
following conditions exist:
• Kinking, crushing, birdcaging, or any other damage
resulting in distortion of the rope structure.
• Evidence of any heat damage from any cause.
• Reductions from nominal diameter of more than 5%.
• In running ropes, six randomly distributed broken wires
in one lay or three broken wires in one strand in one lay
WARNING
Entanglement Hazard!
Keep yourself and other people away from the turning
rope drum. Death or serious injury may result if
entanglement occurs during hoist operation. Keep all
body parts and loose clothing clear while hoist is running.
WARNING
Incorrectly Set Lowering Limit Switch Hazard!
Never turn the free rope end under the drum. Turns on the
drum which are unwound when the rope drum is
stationary cannot be detected by the lowering limit switch.
This causes the lowering limit switch to become set
incorrectly and to switch off too late or not at all.
Consequently the load may fall causing equipment
damage or injury.
W1084-a
FIGURE 4-34
Fo
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Reference
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