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Tilt the joystick
The rope on winch 2 is unwound.
The hook is lowered.
7.15.4.4
Moving the load with two winches
Requirements and recommendations regarding operation and use
of Grove Cranes are stated on decals and in the Operator and
Safety Handbook and other manuals provided with each specific
model machine. Using the subject crane to perform tilt-up panel
lifting with two hoist lines poses new and different hazards than
does normal lifting use.
Therefore, the following additional precautions must be taken if it is
necessary for the crane to be used to perform Tilt-Up Panel Lifting
using a crane equipped with two winches:
n
The crane must be set up and operated in accordance with
Grove’s instructions in the Operator and Safety Handbook,
Load Capacity Chart, and decals affixed to the crane.
n
The wire rope from winch 2 shall be reeved over the main
boom nose, which is double-reeved.
n
The wire rope from winch 1 shall be reeved over the auxiliary
boom nose, which is single-reeved.
n
The load shall be connected with the main hoist line connected
to the end closest to crane and the auxiliary hoist line con-
nected to the end farthest from the crane.
n
The anti-two block system shall be installed and inspected to
confirm that it is active to monitor both hoist lines.
n
The LML winch selection shall be set to winch 2 and double-
reeved.
n
The wire rope and sheaves shall be inspected prior to and fol-
lowing the lifting operations for damage or abrasion.
n
The total gross load shall not exceed 80% of the standard load
chart. The operator shall be responsible to control this as the
LML does not have a feature to set reduced lifting limits.
n
The auxiliary hoist line shall be considered part of the deducts
to determine net allowable load.
n
The panel shall be lifted so that the hoist lines are in line with
the crane.
n
The load shall be controlled to prevent rotation of the load and
to ensure the load stays in line with the boom.
n
The load must be balanced with the auxiliary: load line not
taking more than half the load at any time during the lift. The
LML will not be providing coverage for the line pull of the auxil-
iary hoist line.
Lower winch 2
Safety instructions for Tilt-Up Panel
Lifting
Operation
27.04.2020
140.5.204 Telescopic crane
497
Fo
r
Reference
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Summary of Contents for 140.5.204
Page 69: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 69 F o r R e f e r e n c e O n l y ...
Page 70: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 70 F o r R e f e r e n c e O n l y ...
Page 87: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 87 F o r R e f e r e n c e O n l y ...
Page 88: ...Safety instructions 27 04 2020 140 5 204 Telescopic crane 88 F o r R e f e r e n c e O n l y ...