SV90-G40R solenoid valve Excavator loader proportional valve

Pilot control and remote control of electro-hydraulic proportional valve of construction machinery
Advances in electro-hydraulic proportional valves and other special devices have made the electrical control of various systems such as gear, steering, braking and working devices of engineering vehicles a reality. General need
The displacement of the output mechanism can be done using a manual multiway valve driver with proportional servo control similar to Figure 1. Electrical operation has the advantages of fast response, flexible wiring, can achieve integrated control and easy interface with the computer, etc. Modern construction machinery hydraulic valve has been more and more electronic pilot control electro-hydraulic proportional valve (or electro-hydraulic switch valve) instead of manual direct operation or hydraulic pilot control multi-way valve. Another significant advantage of using electro-hydraulic proportional valves (or electro-hydraulic on-off valves) is that the number of operating handles can be greatly reduced on engineering vehicles, which makes the cab layout simple, can effectively reduce the complexity of operation, and has important practical significance for improving the quality and efficiency of work. The multi-disc electro-hydraulic proportional valve and on-off valve can be effectively controlled by using a single rocker. The rocker can realize proportional control or switch control in both X axis and Y axis direction, and the application is very convenient.
With the rapid development of digital wireless communication technology, there has been a stable performance, reliable work, suitable for wireless remote control system of construction machinery, remote control connection on mobile machinery
The receiving device can convert the received radio signal into the proportional signal of the control electro-hydraulic proportional valve and the switch signal of the control electro-hydraulic switching valve, as well as the corresponding signal of the control of other devices, so that the original manual operation of each component can accept the remote control electrical signal instruction and carry out the corresponding action
Construction machinery has actually become a remote control construction machinery.