CN105716822A - Control method and device for low-pressure pulse duration test of automobile part - Google Patents
Control method and device for low-pressure pulse duration test of automobile part Download PDFInfo
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- CN105716822A CN105716822A CN201610059556.7A CN201610059556A CN105716822A CN 105716822 A CN105716822 A CN 105716822A CN 201610059556 A CN201610059556 A CN 201610059556A CN 105716822 A CN105716822 A CN 105716822A
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- duration test
- long duration
- voltage pulse
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a control method for low-pressure pulse duration test of an automobile part, and belongs to the technical field of duration test for automobile parts. Pressure change of an electric cylinder is converted into pressure change of a hydraulic oil cylinder, and applied to a tested part in a hydraulic circulation pipeline, and pulse waves needed for low-pressure pulse duration test of the tested part are provided. The invention also discloses a device for low-pressure pulse duration test of the automobile part. The control method and device are used widely and reliably, and can realizes the pressure waveform of low-pressure pulse duration test via the electric cylinder.
Description
Technical field
The invention belongs to vehicle part long duration test technical field, be specifically related to a kind of control method for automobile component action of low-voltage pulse long duration test and device.
Background technology
The pulse test bench of prior art by servo hydraulic cylinder as actuator, and the medium of the hydraulic circuit at tested exemplar place is hydraulic oil, the pressure of system liquid force feed is changed the pressure change being converted to dielectric fluid force feed by servo hydraulic cylinder, thus producing the pulse of different wave, realize the pressure pulse performance long duration test of tested exemplar, but this device is only suitable for doing the pulse test of more than 5Mpa, pulse testing for below 2Mpa, prior art passes through hydraulic oil, servo hydraulic cylinder regulates the pulse test bench of pulsating pressure, and to there is sensitivity not high, precision is low, the defect that test result error is big.
Summary of the invention
The purpose of the present invention is aiming at the defect of prior art, it is provided that a kind of control method for automobile component action of low-voltage pulse long duration test and device.It is specifically related to the long duration test that vehicle upper part is subject to meeting the pressure waveform of certain rule, vehicle part pressure pulse performance under standard-required can be checked.It is particularly suited for the parts pressure pulse performance long duration tests under standard-required such as radiator, central controller, vaporizer.
The technical solution used in the present invention is: a kind of control method for automobile component action of low-voltage pulse long duration test, it is that the pressure of electric cylinder changes the pressure change being converted to hydraulic jack, impose on the tested exemplar in hydraulic circuit, it is provided that the impulse wave needed for tested exemplar action of low-voltage pulse long duration test.
Specifically include the emptying of (1), hydraulic circuit；(2) minimum pressure of test required pulse waveform, is regulated.
Further, the emptying of described hydraulic circuit is first to be opened by liquid feed valve in hydraulic circuit, and medium circulates, and is discharged by additional air in hydraulic circuit by exhaust-valve.
Further, the described minimum pressure regulating test required pulse waveform is as the minimum pressure testing the impulse waveform needed by the accurate slight pressure of electric cylinder.
Further, the medium in described hydraulic circuit is heated.
A kind of device for automobile component action of low-voltage pulse long duration test, including the gentle liquid circulating pump of medium casing, the gentle liquid circulating pump of described medium casing connects into closed circulation pipeline by conduit under fluid pressure, it is the first conduit under fluid pressure between described test sample input and medium casing outfan, it is the second conduit under fluid pressure between described test sample outfan and medium casing input, described first conduit under fluid pressure is provided with fluid infusion motor, liquid feed valve, valve and gas-liquid circulating pump are changed in first row cut-in without ball, described second conduit under fluid pressure is provided with fluid infusion motor, liquid feed valve, valve is changed in second row cut-in without ball, 3rd emptying switching valve, described first conduit under fluid pressure is communicated to hydraulic jack, described hydraulic jack is driven by electric cylinder.
It is preferred that structure, described first conduit under fluid pressure is provided with heater.
It is preferred that structure, described first conduit under fluid pressure is provided with temperature sensor.
It is preferred that structure, described first conduit under fluid pressure is provided with pressure transmitter.
It is preferred that structure, described matter casing medium is ethylene glycol or hydraulic oil.
The present invention is widely used, reliably, with high-voltage tube for fluid pressure line, by gas-liquid cycle pump, medium is circulated, test waveform and temperature are monitored by pressure transmitter and temperature sensor respectively, medium is carried out the heating of stable and uniform and makes medium temperature meet standard-required by heater, controlled by the accurate slight pressure of electric cylinder thus meet test needs the minimum pressure of impulse waveform, gas-liquid cycle pump primarily serves the purpose of so that heated liquid fully circulates the pressure not increasing system simultaneously, primarily serving the purpose of of liquid feed valve turns on when closing or test sample is not tested when test sample is tested, the sine wave that test is required can be produced by regulating electric cylinder, square wave, trapezoidal wave equal pressure waveform, upper computer software and acquisition system is adopted to gather the instantaneous value of pressure and temperature and export rational controlling value thus realizing closed loop control by software computing.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is pipeline connection diagram of the present invention.
In figure: 1-medium casing, 2-fluid infusion motor, 3-liquid feed valve, valve is changed in 4-first row cut-in without ball, valve is changed in 5-second row cut-in without ball, 6-heater, 7-gas-liquid cycle pump, 8-electric cylinder, 9-hydraulic jack, 10-the 3rd emptying switching valve, 11-test sample, 12-pressure transmitter, 13-temperature sensor.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it is simple to be well understood to the present invention, but the present invention is not constituted restriction by them.
Such as Fig. 1, shown in Fig. 2, a kind of device for automobile component action of low-voltage pulse long duration test of the present invention, including medium casing 1 and gas-liquid circulating pump 7, described medium casing 1 and gas-liquid circulating pump 7 connect into closed circulation pipeline by conduit under fluid pressure, it is the first conduit under fluid pressure between described test sample 11 input and medium casing 1 outfan, it is the second conduit under fluid pressure between described test sample 11 outfan and medium casing 1 input, described first conduit under fluid pressure is provided with fluid infusion motor 2, liquid feed valve 3, valve 4 and gas-liquid circulating pump 7 are changed in first row cut-in without ball, described second conduit under fluid pressure is provided with fluid infusion motor 2, liquid feed valve 3, valve 5 is changed in second row cut-in without ball, 3rd emptying switching valve 10, described first conduit under fluid pressure is communicated to hydraulic jack 9, described hydraulic jack 9 is driven by electric cylinder 8.Described first conduit under fluid pressure is provided with heater 6, temperature sensor 13 and pressure transmitter 12.Described matter casing 1 medium is ethylene glycol or hydraulic oil.Fluid infusion motor 2 is for being supplemented in circulation line by the medium in medium casing 1, and heater 6 coordinates the temperature controlled in circulation line to adapt to different tests requirement with temperature sensor 13.
A kind of control method for automobile component action of low-voltage pulse long duration test, it is that the pressure of electric cylinder changes the pressure change being converted to hydraulic jack, impose on the tested exemplar in hydraulic circuit, it is provided that the impulse wave needed for tested exemplar action of low-voltage pulse long duration test.
Specifically include the emptying of (1), hydraulic circuit；(2) minimum pressure of test required pulse waveform, is regulated.
The emptying of described hydraulic circuit is first to be opened by liquid feed valve in hydraulic circuit, and medium circulates, and is discharged by additional air in hydraulic circuit by exhaust-valve.
The described minimum pressure regulating test required pulse waveform is as the minimum pressure testing the impulse waveform needed by the accurate slight pressure of electric cylinder.
The concrete process of the test of the present invention: first by gas-liquid cycle pump 7, liquid feed valve 3, exhaust-valve is opened, each executive component, monitoring element and conduit under fluid pressure enter gets rid of air event, until air is got rid of after totally closes exhaust-valve, the standard maximum pressure minimum pressure as the impulse waveform of test needs of hydraulic circulation pipeline is adjusted by liquid feed valve 3, and by unnecessary media discharge to medium casing 1, heater 6 is opened, it is heated to the temperature of requirement and keeps, if minimum pressure raises owing to medium temperature raises, then need to carry out of short duration eliminating air by exhaust-valve, reach minimum pressure.Closing liquid feed valve 3 makes pipeline close, regulate electric cylinder 8 thus test sample 11 is pressurizeed with certain speed, reach requirement maximum pressure as maximum pressure, the waveform (such as: sine wave, square wave, trapezoidal wave etc.) of requirement can be made by regulating electric cylinder 8 loading velocity.
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. the control method for automobile component action of low-voltage pulse long duration test, it is characterized in that: it is that the pressure of electric cylinder changes the pressure change being converted to hydraulic jack, impose on the tested exemplar in hydraulic circuit, it is provided that the impulse wave needed for tested exemplar action of low-voltage pulse long duration test.
2. the control method for automobile component action of low-voltage pulse long duration test according to claim 1, it is characterised in that: specifically include the emptying of (1), hydraulic circuit；(2) minimum pressure of test required pulse waveform, is regulated.
3. the control method for automobile component action of low-voltage pulse long duration test according to claim 2, it is characterized in that: the emptying of described hydraulic circuit is first to be opened by liquid feed valve in hydraulic circuit, medium circulates, and is discharged by additional air in hydraulic circuit by exhaust-valve.
4. the control method for automobile component action of low-voltage pulse long duration test according to claim 2, it is characterised in that: the described minimum pressure regulating test required pulse waveform is as the minimum pressure testing the impulse waveform needed by the accurate slight pressure of electric cylinder.
5. the control method for automobile component action of low-voltage pulse long duration test according to claim 1, it is characterised in that: the medium in described hydraulic circuit is heated.
6. the device for automobile component action of low-voltage pulse long duration test, including the gentle liquid circulating pump of medium casing, the gentle liquid circulating pump of described medium casing connects into closed circulation pipeline by conduit under fluid pressure, it is the first conduit under fluid pressure between described test sample input and medium casing outfan, it is the second conduit under fluid pressure between described test sample outfan and medium casing input, it is characterized in that: described first conduit under fluid pressure is provided with fluid infusion motor, liquid feed valve, valve and gas-liquid circulating pump are changed in first row cut-in without ball, described second conduit under fluid pressure is provided with fluid infusion motor, liquid feed valve, valve is changed in second row cut-in without ball, 3rd emptying switching valve, described first conduit under fluid pressure is communicated to hydraulic jack, described hydraulic jack is driven by electric cylinder.
7. the device for automobile component action of low-voltage pulse long duration test according to claim 6, it is characterised in that: described first conduit under fluid pressure is provided with heater.
8. the device for automobile component action of low-voltage pulse long duration test according to claim 6, it is characterised in that: described first conduit under fluid pressure is provided with temperature sensor.
9. the device for automobile component action of low-voltage pulse long duration test according to claim 6, it is characterised in that: described first conduit under fluid pressure is provided with pressure transmitter.
10. the device for automobile component action of low-voltage pulse long duration test according to claim 6, it is characterised in that: described matter casing medium is ethylene glycol or hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059556.7A CN105716822B (en) | 2016-01-28 | 2016-01-28 | Control method and device for automobile component action of low-voltage pulse endurance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059556.7A CN105716822B (en) | 2016-01-28 | 2016-01-28 | Control method and device for automobile component action of low-voltage pulse endurance test |
Publications (2)
| Publication Number | Publication Date |
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| CN105716822A true CN105716822A (en) | 2016-06-29 |
| CN105716822B CN105716822B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610059556.7A Active CN105716822B (en) | 2016-01-28 | 2016-01-28 | Control method and device for automobile component action of low-voltage pulse endurance test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502973A (en) * | 2020-05-20 | 2020-08-07 | 湖北万测试验设备有限公司 | Hydraulic positive and negative pressure test system and method |
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| CN2672643Y (en) * | 2003-12-10 | 2005-01-19 | 天津市精研工程机械传动有限公司 | Pulse test table for hydraulic soft tube assembly |
| CN201508303U (en) * | 2009-09-10 | 2010-06-16 | 深圳市弗赛特检测设备有限公司 | Hose pulse testing machine |
| CN202195990U (en) * | 2011-06-02 | 2012-04-18 | 汉中燎原航空机电工程有限责任公司 | Impulse cycle-testing apparatus |
| CN104422617A (en) * | 2013-09-03 | 2015-03-18 | 银庆宇 | Method and device for generating liquid pressure by adopting alternating current servo system |
| CN104990816A (en) * | 2015-07-14 | 2015-10-21 | 珠海格力电器股份有限公司 | Pulse test device |
| CN105181475A (en) * | 2015-10-28 | 2015-12-23 | 四川杰特机器有限公司 | Impulse test system supercharged through servo electric cylinder |
-
2016
- 2016-01-28 CN CN201610059556.7A patent/CN105716822B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672643Y (en) * | 2003-12-10 | 2005-01-19 | 天津市精研工程机械传动有限公司 | Pulse test table for hydraulic soft tube assembly |
| CN201508303U (en) * | 2009-09-10 | 2010-06-16 | 深圳市弗赛特检测设备有限公司 | Hose pulse testing machine |
| CN202195990U (en) * | 2011-06-02 | 2012-04-18 | 汉中燎原航空机电工程有限责任公司 | Impulse cycle-testing apparatus |
| CN104422617A (en) * | 2013-09-03 | 2015-03-18 | 银庆宇 | Method and device for generating liquid pressure by adopting alternating current servo system |
| CN104990816A (en) * | 2015-07-14 | 2015-10-21 | 珠海格力电器股份有限公司 | Pulse test device |
| CN105181475A (en) * | 2015-10-28 | 2015-12-23 | 四川杰特机器有限公司 | Impulse test system supercharged through servo electric cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502973A (en) * | 2020-05-20 | 2020-08-07 | 湖北万测试验设备有限公司 | Hydraulic positive and negative pressure test system and method |
| CN111502973B (en) * | 2020-05-20 | 2024-02-06 | 湖北万测试验设备有限公司 | Hydraulic positive and negative pressure test system and method |
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| CN105716822B (en) | 2019-11-08 |
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