Construction machinery mixer hydraulic pumps hydraulic motors
Mixer hydraulic pumps hydraulic motors basic information:
Hydraulic pumps could produce hydraulic through tubing to the
hydraulic motor, hydraulic motor to convert hydraulic energy into
kinetic energy and through reducer slow down and increase torque,
transfer to the mixing tank, by adjusting the servo controller
angle of hydraulic pump so as to realize reversing and speed of the
drum, in order to realize concrete loading, mixing, stirring,
discharging and other operations.
PV22 hydraulic pumps and MF22 hydraulic motors performance and
characteristics:
1. High efficiency, high pressure, big displacement design meets
the demands of harsh work conditions for mixer truck.
2. Has swash plate structure.
3. Be suitable for closed-loop circuit system of mixer truck.
4. Manual servo and hydraulic variable control mode.
5. PV22 variable displacement hydraulic pumps with a charging oil
pump.
6. MF22 fixed displacement hydraulic motors.
Mixer hydraulic pumps motors technical parameters:
| 20 series PV hydraulic pump and MF hydraulic motor | 20 | 21 | 22 | 23 |
| Displacement | Max displacement | ml/r | 33.3 | 51.6 | 69.8 | 89.0 |
| Speed | Max continuous working speed
(Full load condition) | r/min | 3500 | 3500 | 3200 | 3200 |
| Rated speed | r/min | 2500 |
| Min continuous working speed | r/min | 500 |
| Pressure | Rated working pressure | Mpa | 35 |
| Max working pressure (transient) | Mpa | 42 |
| Continuous working pressure | Mpa | 30 |
| Allowable shell pressure (Absolute) | Mpa | Constant0.25, Peak value0.5 |
| Torque | Continuous output torque
(Under continuous working pressure) | Nm | 162.3 | 252.3 | 342.6 | 432.9 |
| Max output torque | Nm | 227 | 353 | 480 | 606 |
| Power | Continuous output power | KW | 45 | 79 | 107 | 139 |
| Max power | KW | 62 | 95 | 114 | 150 |
| Temperature | Allowable shell temperature | ℃ | 80 |
| Max working temperature of oil tank | ℃ | 70 |
| Weight | PV series hydraulic pump hydraulic oil emptying | kg | 45 | 53 | 63 | 78 |
PV series hydraulic motor hydraulic oil emptying | kg | 30 | 34 | 40 | 47 |
Mixer hydraulic pump advantages:
1. High working pressure: due to easy processing of plunger and
cylinder hole, dimensional accuracy and surface quality can meet
high requirements, so high precision, small oil leakage, high
volume efficiency, high working pressure can be achieved.
2. Large flow range.
3. change the stroke of the plunger can change the flow, easy to
make a variety of variable type.
Hydraulic oil notice of hydraulic pumps hydraulic motors:
Hydraulic system pollution will affect the normal operation of the
mixer truck at any time, and affect the service life of hydraulic
pumps and hydraulic motors, serious damage to the pump and motor,
so it is very important for the hydraulic system.
Oil change and oil filter replacement:
1. 500 working hours for first run.
2. Replace every 1500 working hours from now on, but at least once
a year.
3. Note: When changing oil, replace hydraulic filter element at the
same time.
Tags: mixer hydraulic pump, hydraulic pumps hydraulic motors, MF22
hydraulic motors.
