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Multi-pump multi-motor durability test device and method based on common direct-current bus technology

A durability test, co-current technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system test, mechanical equipment, etc., can solve the problem of low versatility, lack of durability test device and test method, large power loss, etc. problem, to avoid the influence of harmonics and realize the effect of accelerated life test

Active Publication Date: 2017-03-29
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydraulic pumps and hydraulic motors independently developed by domestic enterprises have made some breakthroughs in product performance, but due to the lack of durability test equipment and test methods, product reliability is difficult to guarantee
Traditional hydraulic pump and hydraulic motor durability test devices have low test efficiency, large power loss, and low versatility

Method used

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  • Multi-pump multi-motor durability test device and method based on common direct-current bus technology
  • Multi-pump multi-motor durability test device and method based on common direct-current bus technology

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] Such as figure 1 As shown, the device of the present invention includes rectification unit 1, DC bus bar 2, inverter unit I3.1, inverter unit II3.2, asynchronous servo motor 4, 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, safety valve 9, proportional relief valve 10, On-off valve I11.1, on-off valve II11.2, on-off valve III11.3, on-off valve IV11.4, temperature sensor I12.1, temperature sensor II12.2, back pressure valve 13, tested hydraulic motor 14, asynchronous servo generator Machine 15, oil tank 16;

[0024] Among them, the rectifier unit and the DC bus bar form a common DC bus system;

[0025] Inverter unit Ⅰ and asynchronous servo motor form the driving system;

[0026] Tested hydraulic pump, pressure sensor Ⅰ, press...

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Abstract

The invention discloses a multi-pump multi-motor durability test device and method based on the common direct-current bus technology. The test device comprises a common direct-current bus system, a drive system, a hydraulic testing system and a loading feedback system. The drive system and the hydraulic testing system are connected. The hydraulic testing system and the loading feedback system are connected. The drive system and the loading feedback system are connected with the common direct-current bus system. The test method comprises two test methods of constant rotating speed testing and constant torque testing. By means of the multi-pump multi-motor durability test device and method, the common direct-current bus technology and the asynchronous motor vector control technology are applied, the testing efficiency is improved, the testing range is widened, and the testing time is reduced.

Description

technical field [0001] The invention relates to the field of pump / motor testing, in particular to a durability testing device and method based on common DC bus technology. Background technique [0002] Hydraulic pumps and hydraulic motors are the core components used by the main engine of construction machinery, and their reliability directly determines the performance and service life of major equipment. The hydraulic pumps and hydraulic motors independently developed by domestic enterprises have made some breakthroughs in product performance, but due to the lack of durability test equipment and test methods, product reliability is difficult to guarantee. Traditional hydraulic pump and hydraulic motor durability test devices have low test efficiency, large power loss, and low versatility. Therefore, how to improve the test efficiency of the hydraulic pump and hydraulic motor durability test device, realize power recovery, and increase the range of the tested object has bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B19/00
CPCF15B19/00
Inventor 张立杰高强孟昭亮强红宾刘小平
Owner YANSHAN UNIV
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