5.3.4.
Pay-out Cable
With the pay-out cable attached to the boom tip stand-off bracket, select positions for the
intermediate cable guides provided, one for each telescoping section and one or more for the main
boom allowing 9’-12’ between the drum and the nearest cable guide. Measure the distance from
the cable to the sides of the booms, record lengths and mark the positions for the guides. Cut and
weld the guides to the boom after removing the cable. Refit the cable through the eyes and anchor
to the post using the clamp provided. Adjust the position of each eye so that the cable passes
through just touching the top of the ring. When booms deflect and pads wear the cable will take up
a lower position in the eye.
5.4. Anti-Two-Block
(if installed)
5.4.1.
Rectangular type Anti-two Block switches
The switches require fitting at an offset angle to ensure correct operation throughout the full
working angle range of the boom. Fix the switch to the bolt and lock the nuts. Consult installation
drawings at the rear of this manual.
5.4.2.
Tubular type Anti-two Block switches
Fix the anti-two-block switch mounting bolt by welding it to the boom head preferably so that the
bob weight (when suspended from the switch) can be fitted to the static hoist rope below the rope
anchor. Check that the switch works correctly as the boom luffs throughout its working range.
Consult installation drawings at the rear of this manual.
5.4.3.
Multiple Anti-two Block switches
Additional switches (for fly-jibs) can be added. Connection is via plug and socket at the Junction
box adjacent to the main boom head. Consult installation drawings at the rear of this manual.
5.4.4.
Bob-weight (both types of switches)
Hang the bob weight assembly from the switch eye after cutting the chain to length if desired to suit
winch line speed. Repeat the procedure if required for rooster or fly jib. Consult installation
drawings at the rear of this manual.
5.5. Load Moment based systems
5.5.1.
Overview
Pressure transducers are fitted into the luffing cylinder of hydraulic luffing cranes.
5.5.2.
Pressure Transducers (Luffing Cylinder)
5.5.2.1.
Luff Cylinder - Annular (rod) Side
Install the appropriately marked pressure transducer into the hydraulic line feeding the top
of the boom luffing cylinder. Ensure it is fitted to DIRECTLY read the internal pressure
WITHOUT being influenced by outside check valves or similar.
5.5.2.2.
Luff Cylinder - Force (piston) Side
Install the appropriately marked pressure transducer into the hydraulic line feeding the
bottom of the boom luffing cylinder. Ensure it is fitted to DIRECTLY read the internal
pressure WITHOUT being influenced by outside check valves or similar.
5.5.2.3.
Cabling
Pressure Transducer cables should be fixed firmly to the crane structure and routed to the
controller ensuring freedom of movement around moving parts, such as the boom pivot
pin. Clip cables at 2-foot intervals.
Содержание RCI-1550 LM
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