Hyundai HX140L, Manual

Page: 140 / 819

2-72
3. OPERATION
Generating the turning force
The high hydraulic supplied from a hydraulic pump flows into a cylinder block (10) through rear
cover (29) of motor, and valve plate (70).
The high hydraulic is built as flowing on one side of Y-Y line connected by the upper and lower
sides of piston assy (18).
The high hydraulic can generate the force, F1 = P
佴
A (P : supplied pressure, A : water pressure
area), like following pictures, working on a piston.
This force, F1, is divided as N1 thrust partial pressure and W1 radial partial pressure, in case of the
plate (09) of a tilt angle,
儎
.
W1 generates torque, T = W1+R1, for Y-Y line connected by the upper and lower sides of piston as
following pictures.
The sum of torque (
僿
W1
佴
R1), generated from each piston (4~5 pieces) on the side of a high
hydraulic, generates the turning force.
This torque transfers the turning force to a cylinder block (10) through a piston; because a cylinder
block is combined with a turning axis and spline, a turning axis rotates and a turning force is sent.
F1
f1
N1
W1
Y
Y
R1
P
A
O
W1
Cylinder
Low
pressure
High
pressure
Pistion
21078TM05
Cylinder block
1)