Track motor and gearbox
The track motor is a variable axial piston motor that
consists of a housing, a rotary group and a port
plate. The housing contains the swash angle control
screw. The rotary group consists of the cylinders
and the pistons. The port plate consists of the
counterbalance valve, the check valves, the relief
valves and the displacement changeover valve.
Track motor also includes the spring applied,
hydraulically released parking brake assembly.
The gearbox has a two-stage planetary mechanism
has two sets of sun gears, planetary gears and
pinion gears, driven by the splined output shaft of
the track motor mounted directly to the gearbox.
Swing motor and gearbox
The swing motor is a fixed axial piston motor. The
rotary group consists of a cylinder block and nine
pistons located in the cylinder. The cover section
has relief valves, an anti-cavitation valves and anti-
rebound valves. The housing has a time delay valve
and a disk type brake.
The gearbox is composed of the sun gear, the
planetary gear, the pinion gear and the housing.
The power supplied to the output shaft of the swing
motor reduces motor speed through the sun gear
and the planetary gear, developing high torque that
is transmitted to the pinion gear.
Presentation
15
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