Analysis of the application of hydraulic synchronization in multi-pump gearbox

1. Synchronization of diverter and collector valve
The diverter and collector valve is a hydraulic component specially used to achieve flow distribution. It can evenly distribute the input hydraulic flow to two or more actuators (such as pumps), or collect the return oil of multiple actuators. In multi-pump gearboxes, diverter and collector valves are widely used to achieve synchronous operation of pumps.

Working principle
The working principle of the diverter and collector valve is based on the throttling principle and the pressure compensation principle. When the input flow passes through the diverter and collector valve, the valve core will automatically adjust the opening of the throttle port according to the load pressure of each output end to ensure that the flow of each output end is equal. This adjustment is achieved through the pressure feedback mechanism inside the valve core. When the load pressure of a certain output end increases, the throttle port of that end will be reduced accordingly to maintain the total flow unchanged.

Advantages and disadvantages
The advantages of diverter and collector valve synchronization include simple structure, easy maintenance, and low cost. However, it also has some disadvantages, such as the synchronization accuracy is greatly affected by flow changes, and the synchronization accuracy will drop significantly when the flow deviates from the design value. In addition, the flow divider and flow collector valve may require additional pressure compensation measures to maintain synchronization performance in high-pressure and high-flow situations.

Application scenarios
The synchronization of the flow divider and flow collector valve is suitable for occasions where the synchronization accuracy is not high, such as some simple hydraulic systems or test equipment. In these occasions, the flow divider and flow collector valve can provide sufficient synchronization performance while maintaining low cost and maintenance requirements.

2. Synchronous motor synchronization
The synchronous motor is a hydraulic component specially used to achieve the synchronous operation of multiple hydraulic motors. It connects the output shafts of multiple motors through high-precision gear transmission or shaft connection to ensure that they run at the same speed and phase.

Working principle
The working principle of the synchronous motor is based on the rigid connection principle of gear transmission or shaft connection. When the input flow passes through the synchronous motor, the output shafts of each motor will rotate synchronously, thereby achieving synchronization of flow or displacement. This synchronization method has high accuracy and stability because the gear transmission or shaft connection can provide accurate transmission ratio and phase relationship.

Advantages and disadvantages
The advantages of synchronous motor synchronization include high synchronization accuracy, good stability, and suitability for high-pressure and high-flow situations. However, it also has some disadvantages, such as high cost, complex structure, and regular maintenance. In addition, synchronous motors have high requirements for the cleanliness and temperature of hydraulic oil, because impurities and temperature changes may affect their synchronization performance.

Application scenarios
Synchronous motor synchronization is suitable for occasions with high requirements for synchronization accuracy, such as precision machining equipment, aerospace equipment, ship propulsion systems, etc. In these occasions, synchronous motors can provide stable synchronization performance to ensure the normal operation and accuracy requirements of the equipment.

3. Synchronization of proportional reversing valve and displacement sensor
The synchronization of proportional reversing valve and displacement sensor is a way to achieve hydraulic synchronization through electrical control. It uses proportional reversing valve to adjust the flow of each Multi-Pump Gearbox, and monitors the position or displacement of each pump in real time through displacement sensor, so as to achieve precise control of synchronization accuracy.

Working principle
The working principle of proportional reversing valve and displacement sensor synchronization is based on electrical control and closed-loop feedback principles. The control signal is sent to the proportional reversing valve through the electrical control system to adjust the flow of each pump. The position or displacement of each pump is monitored in real time through the displacement sensor, and the feedback signal is sent back to the electrical control system. The electrical control system compares and calculates the feedback signal and the set value, and adjusts the control signal to achieve precise control of synchronization accuracy.

Advantages and Disadvantages
The advantages of proportional reversing valve and displacement sensor synchronization include high synchronization accuracy, good flexibility, and suitability for complex control systems. However, it also has some disadvantages, such as high system complexity, high cost, and the need for professional electrical control and debugging technology.

Application Scenarios
The synchronization of proportional reversing valve and displacement sensor is suitable for occasions that require extremely high synchronization accuracy and complex control systems, such as high-precision CNC machine tools, robotic systems, and automated production lines. In these occasions, the synchronization of proportional reversing valve and displacement sensor can provide precise synchronization performance and control flexibility to meet the high-precision and complex control requirements of the equipment.