EQUIPMENT DESCRIPTION (Contd)
PALLET EQUIPMENT FEATURES (Contd)
LOWER SUPPORT BOOM The large structural frame, mounted on
bearing shaft below launch boom, that serves to lift launch boom while under
load of bridge assembly by means of two large hydraulic cylinders.
LOWER SUPPORT ROLLERS The six rollers, mounted on end of launch
boom next to rear pin wheel drive, that function to hold bridge along roller
contact surfaces of bridge launch beam during launch and retrieval operations.
REAR PIN WHEEL DRIVE
The drive unit, consisting
of a gearbox,
gear, and hydraulic motor located on launch boom next to lower support
rollers, that functions to drive and retain bridge assembly during launch and
UPPER ROLLER BLOCKS The two rollers, mounted behind lower
support rollers on each side of launch boom, that contact bridge launch beam
to provide additional support during launch and retrieval operations.
CABLE GUIDE ROLLER The roller on center of launch boom that guides
the winch cable during launch and retrieval operations.