Development of inclined shaft piston pump
Development of the inclined-axis piston pump In recent years, the development trend of the axial piston pump has shown the following new features.
1. High speed and high pressure are the development direction of axial piston pumps. This embodies an increase in power density and allows it to be directly matched to the engine for easier application.
2. Whether it is a quantitative or variable oblique axis pump, it has a good prospect due to its good starting performance and large transmission torque.
3. The light axial piston pump is only about 20% higher than the vane pump, but its performance is much higher than it can compete with the vane pump. This is also a development direction of the axial piston pump.
4. Combine with electronic technology to achieve multiple control methods. Rexroth's electronic pump provides precise closed-loop control of pressure flow. In addition, frequency conversion control is gradually applied in the fields of hydraulic elevators and injection molding machines. Based on the overall background of sustainable development and environmental protection, the operating environment of the pump puts forward many requirements for the design of the pump, such as leakage reduction, noise vibration reduction, adjustable adjustability, extended life, etc., which are different for pump design. The focus of the focus or several key points must be considered in parallel, and it will inevitably form a diversified form of the pump. China's axial piston pump technology is still relatively backward, but the strong demand has a great impetus to the development of axial piston pump technology. Therefore, as long as we can keep up with the trend of international technology and give play to the advantages of the latecomer, we will surely catch up with the international advanced level and even come to the fore. Axial piston pumps are commonly used in hydraulic transmission systems for machine tools, metallurgy, forging, mining and hoisting machinery, and are particularly widely used in high-power hydraulic transmission systems. In order to improve efficiency, a gear pump or a vane pump is usually used as an auxiliary oil pump in the application to supply oil, make up for leakage and maintain a certain pressure in the oil path.