Applicable PC60-7 distribution valve anti-cavitation valve 723-20-80100

The working principle of excavator solenoid valve
The excavator mainly uses direct-acting solenoid valve, which has the advantages of convenient control, fast action, easy to achieve remote control, and can work normally under vacuum, negative pressure and zero pressure.
The excavator solenoid valve has a closed chamber inside, the valve body is in the middle of the chamber, and the two ends of the valve body are configured with electromagnets according to the needs, or only one end is configured with electromagnets. Using the magnetic force generated by the principle of inductance, the control spool moves to achieve the oil circuit reversal, when the electromagnet coil is energized, the electromagnet will pull in the opposite direction, and push the spool to move in the direction of suction, thereby blocking or exposing different oil holes, and the oil will enter different pipelines according to the instructions. If the solenoid coil of the solenoid valve is burned out or cut off, it cannot generate magnetic force, and the valve core cannot be moved, and the excavator cannot perform related operations.

The solenoid valve includes a coil, a magnetic core and a jacking rod. Generally, the spool can slide under the electromagnetic force drive of the coil. The spool is in different positions, and the path of the solenoid valve is not
Same. There are several working positions of the spool, which are called several solenoid valves; The valve body has several passages, which are called solenoid valves. Some solenoid valves are powered for a long time, and some are powered for a short time. For example, when the excavator is not started, the GPS is always powered on when the negative main switch is not turned off; The safety lock solenoid valve is always energized when working; The two-speed solenoid valve is powered on when the rabbit is selected. The excavating booster solenoid valve is powered on for a short time when the contact booster switch is switched on.

Pay attention to check whether the proportional solenoid valve plug is loose when using, sometimes
Loose plug or poor line contact will lead to large fluctuations in hydraulic pump flow
Small, easy to cause the vehicle hydraulic jitter, especially when lifting the big arm jitter comparison
Serious; How to simply determine whether the proportional solenoid valve is burned and can be overflowed
When working in flow, use an iron tool near the electromagnet to see if there is a magnetic force.