In the hydraulic system, when the actuator stops moving, what are the benefits of the hydraulic pump unloading
Any device with hydraulic equipment and its hydraulic system will have a common feature, actuators are carry before, back, middle three, when at the ends of the cylinder to limit, the system can no longer continue to oil, hydraulic valve as the center, but top oil cylinder oil leakage, no pressure, just stop at the end, if the top to keep pressure, so, hydraulic valve will continue to fuel supply, can not stop in the middle segment. Your question is hydraulic components stopped the movement that is in the middle position, such as three four-way reversing valve (O, M type, etc.), in the middle position, the hydraulic oil through the overflow valve directly back to the fuel tank and the benefits of it is safe
The oil pressure is 0 in the pipeline, which is good for all sealing parts. Now the unloading method is normally installed with another discharge valve, and the valve opens back to the oil channel when the system is down.
In general, more complex hydraulic systems have the exercise limit monitoring device, and when the pump is unloaded, all the moving parts should be in place without monitoring failure.
In the hydraulic pump drive motor without frequent start-stop, make the hydraulic pump power loss under the condition of close to zero, the operation to reduce power consumption, to reduce the fever of the system and extend the service life of the pump and motor. (1) the impact on the motor, pump, and solenoid valve is much better after the restart.
