Explanation of structure action
1. The input shaft of the pump, which is connected to the drive source, rotates, and the cylinder block, which is connected to the input shaft by a spline, rotates. 2.
2 At this time, the piston sliding on the ramps reciprocates according to the angle of the ramps.
3. When the piston of the cylinder block protrudes, it sucks in oil from the tank, and when it protrudes, it spits out oil to the actuator side of the valve door.
It is divided into suction port and discharge port according to the valve plate. The greater the angle of inclination of the variable pump swash plate, the greater the stroke of the piston reciprocating motion, and when the angle is .0, the piston does not reciprocate, and the discharge flow rate is also 0.
4. When the loop pump is closed and the angle in the reverse direction is added, suction and discharge are reversed even if the rotation of the input shaft is the same.
Basic Characteristics
The main characteristics of the pump are as follows.
Volumetric efficiency (real discharge volume theoretical discharge volume) Low speed rotation, high pressure use internal leakage increases efficiency decreases. Real shaft power (theoretical shaft power mechanical efficiency) rotary number, pressure increases mechanical efficiency increases. Real discharge volume (volumetric efficiency), real shaft power and the number of rotations and pressure and so on.