Driving and variable load test device for high-speed constant-pressure variable displacement piston pump and based on power feedback

Abstract

The invention discloses a driving and variable load test device for a high-speed constant-pressure variable displacement piston pump. The driving and variable load test device comprises the high-speedconstant-pressure variable displacement piston pump, a driving motor and a power feedback motor; the driving motor is a double output shaft motor, one end of the driving motor is connected with a driving shaft of the high-speed constant-pressure variable displacement piston pump, and the other end of the driving motor is connected with an output shaft of the power feedback motor; and mechanical energy output by the driving motor is transmitted to the high-speed constant-pressure variable displacement piston pump, the mechanical energy is converted to hydraulic energy by the high-speed constant-pressure variable displacement piston pump and transmitted back to the power feedback motor, and the hydraulic energy is converted to the mechanical energy by the power feedback motor and is transmitted to the driving motor.

Description

technical field [0001] The invention relates to the technical field of mechanical hydraulics, in particular to a high-speed constant pressure variable plunger pump drive and variable load test device based on power feedback. Background technique [0002] As the airborne hydraulic pump source system gradually develops towards high speed, high pressure and high power, the constant pressure variable plunger pump has been widely used in the aviation field due to its structural characteristics, good high speed, high pressure and constant pressure characteristics. To ensure the performance indicators and reliability of constant pressure variable plunger pumps, such as displacement, speed, pressure, flow, and fluid pulsation characteristics, it is necessary to test the tested pump before the product leaves the factory or in the prototype pre-research stage. [0003] In the field of hydraulic pump loading test, the current national standard provides the current test device, in which...

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Problems solved by technology

[0003] In the field of hydraulic pump loading test, the current national standard provides the current test device, in which the tested hydraulic pump is driven by a motor, and the load end is loaded by a relief valve or a throttle valve, which is a typical throttling loading mode. The test device is simple in structure, but it is usually used in the test system of small and medium power hydraulic pumps due to throttling loading will cause a lot of energy loss

[0004] However, for the constant pressure variable plunger pump with high speed, high pressure and high power, there are the following problems: First, due to the high power of the pump, a large amount of hydraulic energy is converted into heat energy at the throttle port due to the traditional throttling loading mode Dissipation, serious energy loss, and at the same time, it will increase the heat of the oil, degrading the performance and reliability of the hydraulic system

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