Device and method for testing reliability of electric power recycle-type hydraulic pump motor
A test device, hydraulic motor technology, applied in the direction of fluid pressure actuation device, pump test, fluid pressure actuation system test, etc., can solve the problems of overflow power loss, long test period, limited test range, etc. Loss of streaming power, effect of improving test range and test efficiency
Active Publication Date: 2017-05-31
YANSHAN UNIV
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Problems solved by technology
The hydraulic pump motor reliability test has the characteristics of long test period and high energy consumption, and its test platform is usually developed based on the power recovery method
At present, domestic universities and enterprises often use mechanical or hydraulic compensation power recovery methods in reliability test devices, which have high recovery efficiency, but there are strict matching requirements for the displacement and torque of the tested hydraulic pump and the tested hydraulic motor. The scope is limited, and it is suitable for reliability tests of fixed types of products
The electric power recovery method has a large power range, simple loading method and strong versatility, and can realize the reliability test of various types of hydraulic pump motors. It is more efficient than mechanical and hydraulic compensation power recovery methods in the reliability test occasions of multiple models and types of hydraulic pump motors. Advantages, the traditional electric power recovery method has overflow power loss in order to meet the flow matching of the measured object
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[0013] The present invention will be further described below in conjunction with accompanying drawing:
[0014] Such as figure 1 In the schematic structure diagram of the present invention shown, the present invention mainly includes a rectification unit 1, a DC bus bar 2, an inverter unit I3.1, an inverter unit II3.2, an inverter unit III3.3, and an asynchronous servo motor I4. 1. Asynchronous servo motor Ⅱ4.2, asynchronous servo motor Ⅲ4.3, tested hydraulic pump 5, pressure sensor Ⅰ6.1, pressure sensor Ⅱ6.2, pressure sensor Ⅲ6.3, flow sensor Ⅰ7.1, flow sensor Ⅱ7. 2. Flow sensor Ⅲ7.3, flow sensor Ⅳ7.4, one-way valve 8, reversing valve 9, proportional overflow valve 10, three-position four-way reversing valve 11, temperature sensor Ⅰ12.1, temperature sensor Ⅱ12.2 , the tested hydraulic motor 13, the two-way hydraulic pump 14, the oil tank 15, the rectifier unit is connected to the DC bus bar to provide a stable and controllable voltage power supply; the DC bus bar is connecte...
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Disclosed is a device and method for testing reliability of an electric power recycle-type hydraulic pump motor. A rectifying unit is connected with a direct current bus-bar. The direct current bus-bar is connected with an inversion unit I. The inversion unit I is connected with an asynchronous servomotor I. The asynchronous servomotor I is coaxially connected with a tested hydraulic pump. The tested hydraulic pump outputs high pressure oil to drive a tested hydraulic motor. A proportional overflow valve is arranged in the position of a T oil opening of a three-position four-way reversing valve. The tested hydraulic motor is coaxially connected with an asynchronous servomotor II. By controlling of an inversion unit II over the torque of the asynchronous servomotor II, loading to a system is achieved. A one-way valve outlet is an auxiliary system composed of a reversing valve, a two-way hydraulic pump, an asynchronous servomotor III and an inversion unit III. The device and method for testing the reliability of the electric power recycle-type hydraulic pump motor has the beneficial effects that the auxiliary system composed of the two-way hydraulic pump and the asynchronous servomotor III is utilized to achieve flux matching of the tested hydraulic pump and the hydraulic motor, not only is the working condition that the tested hydraulic motor is driven through the confluence of the double pumps met, but also the loss of power overflowing is reduced, and the testing range and efficiency are improved.
Description
technical field [0001] The invention relates to a hydraulic pump motor reliability test device, in particular to an electric power recovery type hydraulic pump motor reliability test device and method. Background technique [0002] Hydraulic pumps and hydraulic motors are the core components of the hydraulic system, and their reliability directly affects the safety of the entire system. The hydraulic pump motor reliability test has the characteristics of long test period and high energy consumption, and its test platform is usually developed based on the power recovery method. At present, domestic universities and enterprises often use mechanical or hydraulic compensation power recovery methods in reliability test devices, which have high recovery efficiency, but there are strict matching requirements for the displacement and torque of the tested hydraulic pump and the tested hydraulic motor. The scope is limited and it is suitable for reliability tests of fixed types of pr...
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IPC IPC(8): F15B19/00F04B51/00
CPCF04B51/00F15B19/00F15B2211/855
Inventor 袁晓明高强孟昭亮张立杰
Owner YANSHAN UNIV