CN201773002U - Test bed - Google Patents
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- CN201773002U CN201773002U CN2010201581339U CN201020158133U CN201773002U CN 201773002 U CN201773002 U CN 201773002U CN 2010201581339 U CN2010201581339 U CN 2010201581339U CN 201020158133 U CN201020158133 U CN 201020158133U CN 201773002 U CN201773002 U CN 201773002U
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- pump
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Abstract
The utility model provides a test bed. The test bed comprises a motor, a steering oil pump, an oil storage tank, a steering machine, a low-frequency impulsive disturbance oil pump and a plurality of detection devices for measuring pressure, wherein the motor is connected with the steering oil pump; an input end of the steering oil pump is connected to the oil storage tank through a first pipeline, and an output end of the steering oil pump is connected to an input end of the steering machine through a second pipeline; hydraulic oil is refluxed to the oil storage tank through an output end of the steering machine via a third pipeline; and the output end of the steering oil pump is connected to the low-frequency impulsive disturbance oil pump through a fourth pipeline. The test bed realizes debugging of the performance of vibrating noise at the low-frequency band in a hydraulic steering system.
Description
[technical field]
The utility model relates to a kind of detection test support equipment, and in particular, the utility model relates to a kind of test-bed that is used to debug the low frequency noise of vehicle hydraulic steering.
[background technology]
At present, vehicle is dissolved in the life of average family more and more at large.The height of vehicle noise vibration is an important indicator that influences vehicle riding comfort, therefore, in the design research and development of vehicle, should reduce the noise and the vibration of vehicle as much as possible.Vehicle noise and vibration are mainly derived from engine and tire, and in addition, the noise vibration of wheel steering system also should not be underestimated.For the exploitation of vehicle hydraulic steering, the noise vibration performance of steering is an important performance requirement.Therefore, in the design phase, should carry out check and analysis to the noise vibration performance of steering.
A kind of common method is built the steering test-bed exactly in the prior art.Pressure working condition on test-bed during the simulating vehicle actual motion, thus by the test of many times on test-bed, the design optimization steering is so that farthest reduce steering system vibration and noise.This traditional test-bed can test effectively because the vibrating noise of the working pressure that steering pump produces.Yet,,, just can't debug such as the low-frequency vibration noise problem that causes by engine ignition or hydraulic system resonance for not being the steering vibrating noise problem that causes owing to steering pump.This mainly due to, be by adopting the motor drives steering pump to rotate on test-bed, and when reality was driven, vehicle was to combine with train by engine to drive the rotation of steering pump.Explosive motor the impulse oscillation problem of lighting a fire can occur in the time of starting, and there is not this problem in motor.Therefore, under the situation of working pressure that guarantees the steering regulation and flow, the working pressure frequency that steering pump on the test-bed produces is all greater than the steering pressure disturbance frequency that is caused by engine ignition, even also greater than the steering resonant frequency of some low frequency order.Because this traditional test-bed can't produce the low frequency pressure signal of required measurement, test-bed can't detect debugging at all to the low frequency noise vibration problem of hydraulic steering system and finally be optimized design.
Just so, for a person skilled in the art, a kind of proving installation is provided, and it can provide the needed low-frequency vibration signal of test so that adjusting is tested in the low frequency noise vibration of the hydraulic steering system of vehicle, really needs technical matters to be solved badly for this area.
[utility model content]
Based on these technical matterss that exist in the background technology, a purpose of the present utility model is intended to, and a kind of test-bed is provided, so that the low frequency noise vibration performance of hydraulic steering system is debugged and carried out optimal design.
Of the present utility modelly be intended to, a kind of low-frequency pulse disturbance oil pump that is used to be arranged on the test-bed is provided a purpose.
The purpose of this utility model realizes by the following technical solutions:
A kind of test-bed, this test-bed comprise motor, steering pump, storage tank, steering box, low-frequency pulse disturbance oil pump and a plurality of pick-up units that are used for gaging pressure,
Wherein, described motor is connected with described steering pump, the input end of described steering pump is connected on the described storage tank by first pipeline, described steering oil delivery side of pump is connected on the input end of steering box by second pipeline, the output terminal of described steering box is back to hydraulic oil in the described storage tank by the 3rd pipeline, and described steering oil delivery side of pump is connected on the low-frequency pulse disturbance oil pump by the 4th pipeline.
Test-bed provided by the utility model, preferably, described second pipeline is provided with three-way connector, and described the 4th pipeline is connected in the outlet of described three-way connector.
Test-bed provided by the utility model, preferably, described motor is connected by belt pulley with described steering pump.
Test-bed provided by the utility model, preferably, described a plurality of pick-up units include:
Be arranged near the pressure fuel pump sensor of described steering oil delivery side of pump, be used to detect the pressure fuel pump of steering pump;
Be arranged near the high-voltage tube pressure transducer of input end of described steering box, be used for detecting the high pressure of described second pipeline; And
Be arranged near the scavenge pipe pressure transducer of output terminal of described steering box, be used for detecting the return pressure of the 3rd pipeline.
Test-bed provided by the utility model, preferably, described low-frequency pulse disturbance oil pump adopts Electric Machine Control.
Test-bed provided by the utility model, preferably, described low-frequency pulse disturbance oil pump includes Oil pump electrical machinery, plunger, eccentric wheel, the pump housing, pump cover and resetting means, wherein
The described pump housing is the inner hollow structure, it is provided with described eccentric wheel, the inner hollow structure of the described pump housing also includes a cylindrical cavity, described plunger is slidably disposed in the described cylindrical cavity, described pump cover is removably disposed in and is used to seal described cylindrical cavity on the described pump housing, described resetting means is arranged between described pump cover and the described plunger, and described eccentric turning axle and described Oil pump electrical machinery are connected to a fixed, and
The top of described pump cover also is provided with opening, by this opening described low-frequency pulse disturbance oil pump is connected with described the 4th pipeline.
Test-bed provided by the utility model, preferably, described eccentric wheel is connected by spline with described Oil pump electrical machinery.
Test-bed provided by the utility model preferably, also is provided with the joint flange face that the flange face with described Oil pump electrical machinery adapts on the described pump housing.
Test-bed provided by the utility model preferably, adopts clearance fit between described plunger and the described cylindrical cavity, and is provided with O-ring seal between them it is sealed.
Understand easily, test-bed of the present utility model, realized the vibrating noise performance in the hydraulic steering system low-frequency range is debugged, thereby it is early stage in vehicle development, just can debug the vibrating noise performance in the hydraulic steering system full frequency band by test-bed of the present utility model, optimize the hydraulic steering system circuit design, the effect of checking noise reduction glissando is so that realization is to the raising of the NVH of automobile hydraulic steering system performance.
[description of drawings]
Below, in conjunction with the accompanying drawings preferred implementation of the present utility model is described in further detail, wherein:
Fig. 1 is the structural representation of the test-bed among embodiment of the utility model;
Fig. 2 is the electronic low-frequency pulse disturbance oil pump structure synoptic diagram on the test-bed of embodiment shown in Figure 1.
[embodiment]
Understand easily, according to the technical solution of the utility model, do not changing under the connotation of the present utility model, one of ordinary skill in the art can propose a plurality of frame mode of the present utility model.Therefore following embodiment and accompanying drawing only are to the specifying of the technical solution of the utility model, and should not be considered as of the present utility model all or be considered as qualification or restriction to technical solutions of the utility model.
As shown in Figure 1, test-bed of the present utility model includes motor 1, steering pump 2, storage tank 3, steering box 4, low-frequency pulse disturbance oil pump 5.Wherein, motor 1 is connected by belt pulley 11 with steering pump 2, the input end of steering pump 2 is connected on the storage tank 3 by first pipeline 12, the output terminal of steering pump 2 is connected to by second pipeline 13 on the input end of steering box 4 and is used to steering box that high-pressure and hydraulic oil is provided, and the output terminal of steering box 4 also is back to hydraulic oil in the storage tank 3 by the 3rd pipeline.The output terminal of steering pump 2 also is connected on the low-frequency pulse disturbance oil pump 5 by the 4th pipeline 16 further.In the preferred embodiment of the present utility model, directly be provided with on second pipeline 13 in the outlet that a three-way connector 6, the four pipelines 16 are directly connected to three-way connector 6.
In a preferred embodiment of the present utility model, near the output terminal of steering pump 2, be provided with pressure fuel pump sensor 21, be used to detect the pressure fuel pump of steering pump 2; Near the input end of steering box 4, be provided with high-voltage tube pressure transducer 22, be used for detecting the pressure of the hydraulic oil of second pipeline 13; Near the output terminal of steering box 4, be provided with scavenge pipe line pressure sensor 23, be used for detecting the pressure of the 3rd pipeline 14.
Below with reference to Fig. 2, it schematically shows a kind of low-frequency pulse disturbance oil pump 5 of the present utility model.Preferably, this low-frequency pulse disturbance oil pump 5 adopts Electric Machine Control.As shown in FIG., low-frequency pulse disturbance oil pump 5 includes Oil pump electrical machinery 51, plunger 52, eccentric wheel 53, the pump housing 54, pump cover 55 and resetting means 56.Wherein, this resetting means 56 is preferably back-moving spring.The pump housing 54 is a hollow structure inside, and portion is equiped with eccentric wheel 53 within it.Also include a cylindrical cavity in the inner hollow structure of the pump housing 54, being equiped with in this cylindrical cavity can be along the plunger 52 of cylindrical cavity slip.Preferably, adopt clearance fit between plunger 52 and the cylindrical cavity, and between them, be provided with O-ring seal it is sealed.Pump cover 55 is removably disposed in and is used to seal cylindrical cavity on the pump housing 54.Back-moving spring 56 is arranged between pump cover 55 and the plunger 52.By this back-moving spring 56, the bottom of plunger 52 contacts with the wheel rim of eccentric wheel 53.The turning axle of eccentric wheel 53 is connected with Oil pump electrical machinery 51, and preferably, connects by spline.In addition preferably, on the pump housing 54, also be provided with the flange face that is connected with Oil pump electrical machinery 51.
When test-bed is worked, at first set the working speed of motor 1, make steering pump 2 be operated under the rotating speed that needs.Have certain working pressure in the whole steering pipeline this moment.By measuring the pressure signal of high-voltage tube pressure transducer 22, pressure fuel pump sensor 21, scavenge pipe pressure transducer 23, can analyze the design that turns to pipeline NVH performance impact to hydraulic steering system.In this case, the working pressure signal frequency in the fluid pressure line depends on the rotating speed of motor 1.
Set Oil pump electrical machinery 51 rotating speeds of low-frequency pulse disturbance oil pump 5, make Oil pump electrical machinery 51 drive eccentric wheel 53 and rotate with certain rotating speed.Eccentric wheel 53 rotatablely move and back-moving spring 143 actings in conjunction under, plunger 52 moves up and down along the cylindrical cavities in the pump housing 54.At this moment, the volume between pump cover 55 and the plunger 52 will periodically change along with the rotation of eccentric wheel 53, the pressure disturbance that the generation cycles change in feasible the 4th pipeline 16 that links to each other with pump cover 55.This pressure disturbance is delivered in the whole steering pipeline by three-way connector 6 again and goes.Obviously, the frequency of this pressure disturbance signal depends on the rotating speed of Oil pump electrical machinery 51.
Because motor 1 and Oil pump electrical machinery 51 are two independently motors, therefore the tester can test the different operating rotating speed that needs are set motor according to reality, thereby whole hydraulic system pressure fluctuating in inner signal frequency is by the working speed decision of these two motors.In test process, generally, motor 1 working speed is set at and guarantees that steering pump 2 is operated under the identical working speed of real vehicle, simulation steering real vehicle operation working pressure state.In addition, Oil pump electrical machinery 51 guarantees that low-frequency pulse disturbance oil pump 5 applies an extra low frequency pressure disturbance in the fluid-link steering pipeline, fluctuation of for example engine ignition surge pressure or a certain low-frequency resonance Pressure Fluctuation Signal that the simulation hydraulic steering system is suffered.By measuring the pressure signal of high-voltage tube pressure transducer 22, pressure fuel pump sensor 21, scavenge pipe pressure transducer 23, further analyze turn to pipeline design to noise vibration Effect on Performance in the low-frequency range of hydraulic steering system, thereby find optimum circuit design scheme according to analysis result.
As mentioned above, test-bed of the present utility model is by introducing low-frequency pulse disturbance oil pump, realized the low-frequency vibration noise of hydraulic steering system is tested, the engineering staff is according to test findings, thereby can find the more excellent fluid pressure line design proposal of NVH performance, the final NVH performance that improves car load satisfies the requirement of client Geng Gao.
Claims (9)
1. a test-bed is characterized in that, this test-bed comprises motor, steering pump, storage tank, steering box, low-frequency pulse disturbance oil pump and a plurality of pick-up units that are used for gaging pressure,
Wherein, described motor is connected with described steering pump, the input end of described steering pump is connected on the described storage tank by first pipeline, described steering oil delivery side of pump is connected on the input end of steering box by second pipeline, the output terminal of described steering box is back to hydraulic oil in the described storage tank by the 3rd pipeline, and described steering oil delivery side of pump is connected on the low-frequency pulse disturbance oil pump by the 4th pipeline.
2. test-bed as claimed in claim 1 is characterized in that, described second pipeline is provided with three-way connector, and described the 4th pipeline is connected in the outlet of described three-way connector.
3. test-bed as claimed in claim 1 is characterized in that, described motor is connected by belt pulley with described steering pump.
4. test-bed as claimed in claim 1 is characterized in that, described a plurality of pick-up units include:
Be arranged near the pressure fuel pump sensor of described steering oil delivery side of pump, be used to detect the pressure fuel pump of steering pump;
Be arranged near the high-voltage tube pressure transducer of input end of described steering box, be used for detecting the high pressure of described second pipeline; And
Be arranged near the scavenge pipe pressure transducer of output terminal of described steering box, be used for detecting the return pressure of the 3rd pipeline.
5. as the arbitrary described test-bed of claim 1-4, it is characterized in that described low-frequency pulse disturbance oil pump adopts Electric Machine Control.
6. test-bed as claimed in claim 5 is characterized in that, described low-frequency pulse disturbance oil pump includes Oil pump electrical machinery, plunger, eccentric wheel, the pump housing, pump cover and resetting means, wherein,
The described pump housing is the inner hollow structure, it is provided with described eccentric wheel, the inner hollow structure of the described pump housing includes a cylindrical cavity, described plunger is slidably disposed in the described cylindrical cavity, described pump cover is removably disposed in and is used to seal described cylindrical cavity on the described pump housing, described resetting means is arranged between described pump cover and the described plunger, and described eccentric turning axle and described Oil pump electrical machinery are connected to a fixed, and
The top of described pump cover also is provided with opening, by this opening described low-frequency pulse disturbance oil pump is connected with described the 4th pipeline.
7. test-bed as claimed in claim 6 is characterized in that, described eccentric wheel is connected by spline with described Oil pump electrical machinery.
8. test-bed as claimed in claim 6 is characterized in that, also is provided with the joint flange face that the flange face with described Oil pump electrical machinery adapts on the described pump housing.
9. test-bed as claimed in claim 6 is characterized in that, adopts clearance fit between described plunger and the described cylindrical cavity, and is provided with O-ring seal between them it is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201581339U CN201773002U (en) | 2010-04-13 | 2010-04-13 | Test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201581339U CN201773002U (en) | 2010-04-13 | 2010-04-13 | Test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773002U true CN201773002U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201581339U Expired - Fee Related CN201773002U (en) | 2010-04-13 | 2010-04-13 | Test bed |
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| CN (1) | CN201773002U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393273A (en) * | 2011-09-08 | 2012-03-28 | 安徽中鼎金亚汽车管件制造有限公司 | Pressure detection device of power steering system |
| CN102419263A (en) * | 2011-09-09 | 2012-04-18 | 沙市久隆汽车动力转向器有限公司 | Noise test bed of recirculating ball type power steering gear |
| CN102507211A (en) * | 2011-10-26 | 2012-06-20 | 安徽中鼎金亚汽车管件制造有限公司 | Noise detection equipment for automobile power steering high-pressure oil pipe |
| CN105334047A (en) * | 2015-09-16 | 2016-02-17 | 浙江吉利汽车研究院有限公司 | Hydraulic steering system noise debugging device |
| CN107701467A (en) * | 2017-09-26 | 2018-02-16 | 重庆长安汽车股份有限公司 | Water pump monomer NVH method of evaluating performance |
-
2010
- 2010-04-13 CN CN2010201581339U patent/CN201773002U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393273A (en) * | 2011-09-08 | 2012-03-28 | 安徽中鼎金亚汽车管件制造有限公司 | Pressure detection device of power steering system |
| CN102393273B (en) * | 2011-09-08 | 2014-08-13 | 安徽中鼎金亚汽车管件制造有限公司 | Pressure detection device of power steering system |
| CN102419263A (en) * | 2011-09-09 | 2012-04-18 | 沙市久隆汽车动力转向器有限公司 | Noise test bed of recirculating ball type power steering gear |
| CN102419263B (en) * | 2011-09-09 | 2014-02-05 | 沙市久隆汽车动力转向器有限公司 | Noise test bed of recirculating ball type power steering gear |
| CN102507211A (en) * | 2011-10-26 | 2012-06-20 | 安徽中鼎金亚汽车管件制造有限公司 | Noise detection equipment for automobile power steering high-pressure oil pipe |
| CN105334047A (en) * | 2015-09-16 | 2016-02-17 | 浙江吉利汽车研究院有限公司 | Hydraulic steering system noise debugging device |
| CN105334047B (en) * | 2015-09-16 | 2018-04-24 | 浙江吉利汽车研究院有限公司 | A kind of hydraulic steering system noise debugging apparatus |
| CN107701467A (en) * | 2017-09-26 | 2018-02-16 | 重庆长安汽车股份有限公司 | Water pump monomer NVH method of evaluating performance |
| CN107701467B (en) * | 2017-09-26 | 2019-04-09 | 重庆长安汽车股份有限公司 | Water pump monomer NVH method of evaluating performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20170413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |