Manitowoc Grove TMS800E13, Руководство оператора

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SET-UP AND INSTALLATION TMS800E13 OPERATOR MANUAL
4
Published 02-06-2014, Control # 495-00
inside the socket to properly secure the wire rope by
using the crane’s hoist to first apply a light load to the live
line.
6. After final pin connections are made, increase the loads
gradually until the wedge is properly seated.
7. The wire rope and wedge must be properly secured
inside the socket before placing the crane into lifting
service. It is the wedge that secures the wire rope inside
the socket whereas the dead-end treatment is used to
restrain the wedge from becoming dislodged from the
socket should the rope suddenly become unloaded from
the headache ball or hook block striking the ground, etc.
Sketches A through F (Figure 4-6) illustrate various methods
for treating the dead-ends of wire ropes which exit a wedge
socket assembly. While use of the loop-back method is
acceptable, care must be exercised to avoid the loop
becoming entangled with tree branches and other
components during crane transport and with the anti-two
block system and other components during use of the crane.
Of the methods shown below, Grove prefers that method A
or F be used on Grove cranes, that is, clipping a short piece
of wire rope to the dead-end or using a commercially
available specialty wedge. Typically, it is recommended that
the tail length of the dead-end should be a minimum of 6
rope diameters but not less that 15.2 cm (6 in) for standard 6
to 8 strand ropes and 20 rope diameters but not less than
15.2 cm (6 in) for rotation resistant wire ropes.
When using method A, place a wire rope clip around the
dead end by clamping a short extra piece of rope to the rope
dead end. DO NOT CLAMP THE LIVE END. The U-bolt
should bear against the dead end. The saddle of the clip
should bear against the short extra piece. Torque the U-bolts
according to the figures listed in the chart titled Wire Rope
Clip Torque Values (Table 4-1).
Other sources for information with which crane users should
be familiar and follow is provided by the American Society of
Mechanical Engineers, American National Standard, ASME
B30.5, latest revised. ASME (formerly ANSI) B30.5 applies
to cableways, cranes, derricks, hoists, hooks, jacks, and
slings. It states, in section 5-1.7.3, “(c) Swagged,
compressed, or wedge socket fittings shall be applied as
recommended by the rope, crane or fitting manufacturer.”
Wire ropes are addressed in ASME B30.5, section 5-1.7.2,
ROPES, It states, in pertinent part, “(a) The ropes shall be of
a construction recommended by the rope or crane
manufacturer, or person qualified for that service.” Additional
information is published by the Wire Rope Technical Board in
the Wire Rope Users Manual, latest revised.
Table 4-1
WIRE ROPE CLIP TORQUE VALUES
Clip Sizes *Torque
mm Inches Nm Ft-Lbs
3.18 1/8 6 4.5
4.76 3/16 10 7.5
6.35 1/4 20 15
7.94 5/16 40 30
13.28 3/8 60 45
11.11 7/16 90 65
12.70 1/2 90 65
14.29 9/16 130 95
15.88 5/8 130 95
19.05 3/4 175 130
22.23 7/8 300 225
25.40 1 300 225
28.58 1-1/8 300 225
31.75 1-1/4 490 360
38.68 1-3/8 490 360
38.10 1-1/2 490 360
FIGURE 4-6
Specialty Clip
Specialty Wedge
A
B C
D
E F
Reference Only