Special Cylinders · Power Stroke Hydraulic Cylinder0 pages

Power stroke hydraulic cylinder
Function:
The basic function of this cylinder is designed for pulling.
Inside of this cylinder are working two pistons. The rapid
traverse piston is firmly attached to the main piston rod.
This piston moves through the entire length of the stroke.
The actuator piston is connected to a hollow-bored piston
rod which slides over the main piston rod and is supported
by the rapid traverse piston within a defined range of
stroke. Outside of this defined range of the stroke, the actuator piston does not move, because he has gone to a
stop.
The following states are possible through a working stroke:
The rapid traverse piston supports the actuator piston when
the cylinder is completely extended and controlled. The
main piston rod retracts and the forces which act on both
piston areas add up. When the cylinder has reached the
defined power stroke, the actuator piston reaches its stop
and only the rapid traverse piston keeps moving. The only
remaining force affecting the main piston rod is the force of
the rapid traverse cylinder. The oil volume which is necessary for motion is reduced to the cylinder space of the rapid
traverse piston and speed increases.
Both pistons are moved back to their end position when
extending the cylinder. In this case, the acting forces are
the forces of the rapid traverse piston, because the actuator
piston moves freely.