CN201983936U - Performance test rack for automobile suspension - Google Patents

Performance test rack for automobile suspension Download PDF

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Publication number
CN201983936U
CN201983936U CN201020677461XU CN201020677461U CN201983936U CN 201983936 U CN201983936 U CN 201983936U CN 201020677461X U CN201020677461X U CN 201020677461XU CN 201020677461 U CN201020677461 U CN 201020677461U CN 201983936 U CN201983936 U CN 201983936U
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CN
China
Prior art keywords
acceleration transducer
suspension
sprung mass
excitation platform
mass acceleration
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Expired - Fee Related
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CN201020677461XU
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Chinese (zh)
Inventor
周建鹏
王岩松
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Priority to CN201020677461XU priority Critical patent/CN201983936U/en
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Publication of CN201983936U publication Critical patent/CN201983936U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A performance test rack for an automobile suspension comprises a mechanical rack, a measuring control cabinet and an excitation device, wherein linear slide tracks, a simulated suspension mass foundation plate, an auxiliary simulated suspension mass block, lifting eyes, a support top plate, an excitation platform, a suspension mass acceleration sensor, a non-suspension mass acceleration sensor and an excitation platform acceleration sensor are arranged in the mechanical rack; one fourth automobile suspension model is simulated by the mechanical rack; the excitation device performs excitation on tires; signals of the suspension mass acceleration sensor, the non-suspension mass acceleration sensor, the excitation platform acceleration sensor are collected and processed through the measuring control cabinet; and the rigidity of the non-suspension mass is changed through increasing or decreasing the tire pressure, the suspension mass is changed through increasing or decreasing the mass of the auxiliary simulated suspension mass block, and the suspension damping and the suspension rigidity are changed through replacing different vibration damper pillars, so that the optimal match of the automobile suspension parameters can be obtained. The performance test rack can shorten test period, reduce test cost and has good stability.

Description

The automotive suspension test bench for performance
Technical field:
The utility model relates to mechanical field, relates in particular to the test-bed of automotive suspension, particularly a kind of automotive suspension test bench for performance.
Background technology:
Parameter matching such as the sprung mass of automotive suspension, suspension damping, suspension stiffness, non-suspension stiffness are the key links of automotive suspension design, and the new model of each automobile factory all needs to carry out the suspension parameter match test before going into operation.In the prior art, automotive suspension parameter matching technology is to determine the automotive suspension parameter by Theoretical Calculation earlier, make the automotive suspension test specimen then, and load onto automobile and carry out vehicle road test, exist the test period long, experimentation cost is high, stable testing is subject to road conditions and problem such as driver's operation level affects.
Summary of the invention:
The purpose of this utility model is to provide a kind of automotive suspension test bench for performance, and described this automotive suspension test bench for performance will solve that the automotive suspension test period is long in the prior art, cost is high, stable testing is subject to road conditions and the technical matters of driver's operation level affects.
This automotive suspension test bench for performance of the present utility model includes mechanical stand, measure switch board and exciting device, wherein, described mechanical stand is made of horizontal base and framework, described framework is fixedlyed connected with horizontal base by bolt perpendicular to the bottom of horizontal base and framework, be provided with two linear slide rails in the machinery stand, a simulated hanging quality base plate, an additional simulation suspended mass, two hangers, a top support plate, an excitation platform, a sprung mass acceleration transducer, a non-sprung mass acceleration transducer and an excitation platform acceleration transducer, described linear slide rail is perpendicular to horizontal base and be installed in by bolt on the left surface of the left column of framework and right column, be provided with slide block in the linear slide rail, the right flank of described simulated hanging quality base plate is connected with described slide block by bolt, described two hangers are arranged on the top of simulated hanging quality base plate, described additional simulation suspended mass is installed in the left surface of simulated hanging quality base plate by bolt, described top support plate is perpendicular to simulated hanging quality base plate and be welded on the upper end of the left surface of simulated hanging quality base plate, described exciting device is installed on the horizontal base, described excitation platform is arranged on the top of exciting device, start in excitation platform and the exciting device is fixedlyed connected, by trip bolt an excitation platform acceleration transducer is installed on the excitation platform, described sprung mass acceleration transducer is installed on the top support plate by trip bolt, described measurement switch board is arranged on the outside of mechanical stand, measure in the switch board and be provided with the signal condition module, signal acquisition module and computing machine, described signal condition module is connected with signal acquisition module by signal conductor, described signal acquisition module is connected with computing machine by signal conductor, described sprung mass acceleration transducer, non-sprung mass acceleration transducer is connected with the signal condition module by signal conductor respectively with the excitation platform acceleration transducer.
Further, described exciting device includes pumping plant, hydraulic efficiency servo-valve, electro-hydraulic servo actuator, start head and exciting controller, described pumping plant, hydraulic efficiency servo-valve and electro-hydraulic servo actuator link to each other by pressure oil pipe, described exciting controller links to each other by signal conductor respectively with hydraulic efficiency servo-valve, electro-hydraulic servo actuator, and described start head is connected with electro-hydraulic servo actuator.
Further, described horizontal base is connected with foot bolt.
Further, be connected with hinge on the described simulated hanging quality base plate.
Further, described framework is made of joist steel, and the left column of framework, right column, upper side frame and lower frame are by being welded to connect, and the horizontal range between described two linear slide rails is 600mm.
Further, be provided with sprung mass acceleration transducer socket, non-sprung mass acceleration transducer socket, excitation platform acceleration transducer socket in the described measurement switch board, described sprung mass acceleration transducer socket is connected with the sprung mass acceleration transducer by signal cable, described non-sprung mass acceleration transducer socket is connected with non-sprung mass acceleration transducer by signal cable, and described excitation platform acceleration transducer socket is connected with the excitation platform acceleration transducer by signal cable.
Further, the frequency response range of described exciting device is 1~500Hz, and maximum static load is 5000kg, and vertical thrust is less than or equal to 50kN.
The course of work of the present utility model is: determine sprung mass according to the automotive suspension design theory earlier, hang damping, suspension stiffness, the isoparametric initial trial value of non-suspension stiffness, the additional simulation suspended mass that quality is satisfied the initial trial value of sprung mass is installed in the left surface of simulated hanging quality base plate by bolt, the shock absorber strut of selecting for use damping and rigidity to satisfy the initial trial value that hangs damping and suspension stiffness is assemblied on the suspension test specimen to be tested, suspension test specimen to be tested is contained in the mechanical stand, the lower cross arm of suspension test specimen links to each other with simulated hanging quality base plate by hinge, the upper end of shock absorber strut links to each other with top support plate by hinge, non-sprung mass acceleration transducer is installed on the steering knuckle of suspension test specimen by trip bolt, with the air pressure adjustment of the tire of a tested automobile to the initial trial value that satisfies non-suspension stiffness, tire is placed vertically on excitation platform, and the wheel rim of tire links to each other by the steering knuckle of bolt with the suspension test specimen.Utilize exciting controller, hydraulic efficiency servo-valve, the electro-hydraulic servo actuator of exciting device to produce the random waveform that satisfies the expection power spectrum then, finally make excitation platform do reciprocal straight-line oscillation and the tire that is placed on it is carried out exciting along vertical direction by the generation random waveform.Meanwhile, the signal of sprung mass acceleration transducer, non-sprung mass acceleration transducer, excitation platform acceleration transducer is delivered to the measurement switch board carry out data processing, obtain the response characteristic of suspension test specimen, if this response characteristic does not reach designing requirement, air pressure, the increase of tire be can increase or reduce or the quality of additional simulation suspended mass, the shock absorber strut that replacing has different damping and rigidity reduced, repeat test, till the response characteristic of suspension test specimen reaches designing requirement.
The utility model and prior art are compared, and its effect is actively with tangible.The utility model utilizes mechanical bench simulation 1/4 automotive suspension model, utilize exciting device to produce accumulation signal, the tire that is placed on the excitation platform is carried out exciting, by measuring switch board to the sprung mass acceleration transducer, non-sprung mass acceleration transducer, the signal of excitation platform acceleration transducer is gathered and is handled, again by increasing or reduce the size of the non-sprung mass rigidity of air pressure realization change of tire, the quality that increases or reduce additional simulation suspended mass realizes changing the size of sprung mass, change different shock absorber struts and realize changing suspension damping and suspension stiffness, to obtain the Optimum Matching of automotive suspension parameter.The utility model has the advantages that shortened the test period, reduced experimentation cost, stable testing is good.
Description of drawings:
Fig. 1 is the structural representation of automotive suspension test bench for performance of the present utility model.
Fig. 2 is that synoptic diagram is looked on the structure left side of the framework that slide rail is installed in the automotive suspension test bench for performance of the present utility model.
Fig. 3 is the structural representation of the suspension test specimen in the automotive suspension test bench for performance of the present utility model.
Fig. 4 is that synoptic diagram is looked on the right side of the simulated hanging quality base plate that slide block and hanger are installed in the automotive suspension test bench for performance of the present utility model.
Fig. 5 is the principle schematic of the measurement switch board in the automotive suspension test bench for performance of the present utility model.
Fig. 6 is the principle schematic of the exciting device in the automotive suspension test bench for performance of the present utility model.
Embodiment:
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, this automotive suspension test bench for performance of the present utility model, include mechanical stand 1001, measure switch board 12 and exciting device 10, wherein, be provided with a horizontal base 1 in the described mechanical stand 1001, a framework 2, two linear slide rails 3, a simulated hanging quality base plate 4, an additional simulation suspended mass 5, two hangers 6, a top support plate 7, a suspension test specimen 9, a tire 11, an excitation platform 14, a sprung mass acceleration transducer 8, a non-sprung mass acceleration transducer 1002, an excitation platform acceleration transducer 13, described horizontal base 1 is installed on the ground of level by foot bolt, described framework 2 links to each other with horizontal base 1 by fastening bolt perpendicular to the bottom of horizontal base 1 and framework 2, described linear slide rail 3 is installed on the left surface of the left column 23 of framework and right column 21 by bolt respectively perpendicular to the slide rail 31 of horizontal base 1 and two linear slide rails 3, the slide block 32 of linear slide rail 3 is installed in the right flank of simulated hanging quality base plate 4 by bolt, the top of described simulated hanging quality base plate 4 is equipped with two hangers 6, described additional simulation suspended mass 5 is installed in the left surface of simulated hanging quality base plate 4 by bolt, described top support plate 7 is perpendicular to simulated hanging quality base plate 4 and be welded on the upper end of the left surface of simulated hanging quality base plate 4, the lower cross arm 91 of described suspension test specimen 9 links to each other with simulated hanging quality base plate 4 by hinge, the upper end of the shock absorber strut 92 of suspension test specimen 9 links to each other with top support plate 7 by hinge, the wheel rim of described tire 11 links to each other with the steering knuckle 93 of suspension test specimen 9 by bolt, tire 11 is placed vertically on excitation platform 14, described sprung mass acceleration transducer 8 is installed on the top support plate 7 by trip bolt, described non-sprung mass acceleration transducer 1002 is installed in by trip bolt on the steering knuckle 93 of suspension test specimen 9, and described excitation platform acceleration transducer 13 is installed on the excitation platform 14 by trip bolt.Described measurement switch board 12 is provided with signal condition module 124, signal acquisition module 125, computing machine 126, described signal condition module 124 links to each other with signal acquisition module 125 by signal conductor, and described signal acquisition module 125 links to each other by the USB interface of signal conductor with computing machine 126.Described exciting device 10 is installed on the horizontal base 1, it is provided with pumping plant 104, hydraulic efficiency servo-valve 103, electro-hydraulic servo actuator 102, start 101, exciting controller 105, described pumping plant 104, hydraulic efficiency servo-valve 103, servo-hydraulic actuator 102 link to each other by pressure oil pipe, described exciting controller 105 links to each other by signal conductor respectively with hydraulic efficiency servo-valve 103, servo-hydraulic actuator 102, and described start 101 and excitation platform 14 link to each other by fastening bolt.
As shown in Figure 2, further, described framework 2 utilizes joist steel to make, the left column 23 of framework 2, right column 21, upper side frame 22 and lower frame 24 be by being weldingly connected, and the horizontal range that is installed in respectively between the slide rail 31 of two linear slide rails 3 on the left column 23, right column 21 of framework is 600mm.
As shown in Figure 3, further, described suspension test specimen 9 is the suspended rack assembly of tested automobile, it is provided with lower cross arm 91, shock absorber strut 92, steering knuckle 93, described lower cross arm 91 and steering knuckle 93 link to each other by spherical hinge, and described shock absorber strut 92 links to each other with steering knuckle 93 by fastening bolt.
As shown in Figure 4, further, described simulated hanging quality base plate 4 can be made the linear reciprocating motion of vertical direction along linear slide rail 3, the quality of sprung mass foundation plate 4 and top support plate 7 is 210kg, when carrying out the test of automotive suspension parameter matching, the quality adjustment scope of described additional simulation sprung mass 5 is between 1~120kg.The right flank of simulated hanging quality base plate 4 is equipped with four slide blocks 32 of linear slide rail 3, and the top of simulated hanging quality base plate 4 is equipped with two hangers.
As shown in Figure 5, further, described measurement switch board 12 is provided with sprung mass acceleration transducer socket 121, non-sprung mass acceleration transducer socket 122, excitation platform acceleration transducer socket 123, described sprung mass acceleration transducer socket 121 is connected with sprung mass acceleration transducer 8 by signal cable, described non-sprung mass acceleration transducer socket 122 is connected with non-sprung mass acceleration transducer 1002 by signal cable, and described excitation platform acceleration transducer socket 123 is connected with excitation platform acceleration transducer 14 by signal cable.
As shown in Figure 6, further, the technical indicator of described exciting device 10 has: frequency response range is 1~500Hz, and maximum static load is 5000kg, can produce the vertical thrust of 50kN, can produce sine, at random, sine superposes at random, various vibrational waveforms such as stack at random.
Concrete, the course of work of present embodiment is: determine sprung mass according to the automotive suspension design theory earlier, hang damping, suspension stiffness, the isoparametric initial trial value of non-suspension stiffness, the air pressure of regulating tire 11 satisfies the initial trial value of non-suspension stiffness, the additional simulation suspended mass 5 that a quality is satisfied the initial trial value of sprung mass is installed in the left surface of simulated hanging quality base plate 4 by bolt, the shock absorber strut 92 of selecting for use damping and rigidity to satisfy the initial trial value that hangs damping and suspension stiffness is assemblied on the suspension test specimen 9, suspension test specimen 9 is contained in the mechanical stand 1001 again, utilize the exciting controller 105 of exciting device 10 then, hydraulic efficiency servo-valve 103, electro-hydraulic servo actuator 102 produces the random waveform that satisfies the expection power spectrum, finally makes excitation platform 14 do reciprocal straight-line oscillation and the tire 11 that is placed on it is carried out exciting along vertical direction by the generation random waveform.Meanwhile, sprung mass acceleration transducer 8, non-sprung mass acceleration transducer 1002, excitation platform acceleration transducer 13 are delivered to measurement switch board 12 carry out data processing, obtain the response characteristic of suspension test specimen 9, if this response characteristic does not reach designing requirement, air pressure, the increase of tire 11 be can increase or reduce or the quality of additional simulation suspended mass 5, the shock absorber strut 92 that replacing has different damping and rigidity reduced, repeat test, till the response characteristic of suspension test specimen 9 reaches designing requirement.
In the present embodiment, suspension test specimen 9 is a McPherson strut, tire 11 is selected the tire of tested automobile for use, the model that linear slide rail 3 adopts BOSCH-REXROTH company of German Bosch to produce is the HGW65CAE2R1600 linear slide rail, the high-performance vertical vibration platform that exciting device 10 adopts U.S. TEAM hydraulic vibration technology company limited to produce, sprung mass acceleration transducer 8, non-sprung mass acceleration transducer 1002, the ULT20 series acceleration transducer that excitation platform acceleration transducer 13 adopts the safe Electronics Co., Ltd. of the U.S. to produce, computing machine 126 adopts personal computer or notebook computer, the SCM5B isolation mode analog signal conditioning module that signal condition module 124 adopts U.S. Dataforth company to produce, the ICETEK-2812-EC DSP disposable plates that signal acquisition module 125 adopts Beijing Rui Tai Science and Technology Ltd. to produce.

Claims (7)

1. automotive suspension test bench for performance, include mechanical stand, measure switch board and exciting device, it is characterized in that: described mechanical stand is made of horizontal base and framework, described framework is fixedlyed connected with horizontal base by bolt perpendicular to the bottom of horizontal base and framework, be provided with two linear slide rails in the machinery stand, a simulated hanging quality base plate, an additional simulation suspended mass, two hangers, a top support plate, an excitation platform, a sprung mass acceleration transducer and a non-sprung mass acceleration transducer, described linear slide rail is perpendicular to horizontal base and be installed in by bolt on the left surface of the left column of framework and right column, be provided with slide block in the linear slide rail, the right flank of described simulated hanging quality base plate is connected with described slide block by bolt, described two hangers are arranged on the top of simulated hanging quality base plate, described additional simulation suspended mass is installed in the left surface of simulated hanging quality base plate by bolt, described top support plate is perpendicular to simulated hanging quality base plate and be welded on the upper end of the left surface of simulated hanging quality base plate, described exciting device is installed on the horizontal base, described excitation platform is arranged on the top of exciting device, start in excitation platform and the exciting device is fixedlyed connected, by trip bolt an excitation platform acceleration transducer is installed on the excitation platform, described sprung mass acceleration transducer is installed on the top support plate by trip bolt, described measurement switch board is arranged on the outside of mechanical stand, measure in the switch board and be provided with the signal condition module, signal acquisition module and computing machine, described signal condition module is connected with signal acquisition module by signal conductor, described signal acquisition module is connected with computing machine by signal conductor, described sprung mass acceleration transducer, non-sprung mass acceleration transducer is connected with the signal condition module by signal conductor respectively with the excitation platform acceleration transducer.
2. automotive suspension test bench for performance as claimed in claim 1, it is characterized in that: described exciting device includes pumping plant, hydraulic efficiency servo-valve, electro-hydraulic servo actuator, start head and exciting controller, described pumping plant, hydraulic efficiency servo-valve and electro-hydraulic servo actuator link to each other by pressure oil pipe, described exciting controller links to each other by signal conductor respectively with hydraulic efficiency servo-valve, electro-hydraulic servo actuator, and described start head is connected with electro-hydraulic servo actuator.
3. automotive suspension test bench for performance as claimed in claim 1 is characterized in that: described horizontal base is connected with foot bolt.
4. automotive suspension test bench for performance as claimed in claim 1 is characterized in that: be connected with hinge on the described simulated hanging quality base plate.
5. automotive suspension test bench for performance as claimed in claim 1, it is characterized in that: described framework is made of joist steel, the left column of framework, right column, upper side frame and lower frame are by being welded to connect, and the horizontal range between described two linear slide rails is 600mm.
6. automotive suspension test bench for performance as claimed in claim 1, it is characterized in that: be provided with sprung mass acceleration transducer socket in the described measurement switch board, non-sprung mass acceleration transducer socket, excitation platform acceleration transducer socket, described sprung mass acceleration transducer socket is connected with the sprung mass acceleration transducer by signal cable, described non-sprung mass acceleration transducer socket is connected with non-sprung mass acceleration transducer by signal cable, and described excitation platform acceleration transducer socket is connected with the excitation platform acceleration transducer by signal cable.
7. automotive suspension test bench for performance as claimed in claim 1 is characterized in that: the frequency response range of described exciting device is 1~500Hz, and maximum static load is 5000kg, and vertical thrust is less than or equal to 50kN.
CN201020677461XU 2010-12-21 2010-12-21 Performance test rack for automobile suspension Expired - Fee Related CN201983936U (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102768122A (en) * 2012-05-30 2012-11-07 哈尔滨工程大学 Measuring method of equipment endogenous characteristics under unbalanced turbulence force effect
CN103353403A (en) * 2013-06-28 2013-10-16 朱留存 Six-dimensional parallel-connection test bench for automobile suspension test
CN103364207A (en) * 2012-04-01 2013-10-23 长春孔辉汽车科技有限公司 Multifunctional chassis test bed
CN103578460A (en) * 2012-07-19 2014-02-12 徐丰辰 Vehicle damping noise reduction method
CN104019998A (en) * 2014-06-18 2014-09-03 上海理工大学 Variable-rigidity virtual car body rigidity distribution method
CN104132821A (en) * 2014-08-08 2014-11-05 常州万安汽车部件科技有限公司 Fatigue testing system for vehicle hydraulic interconnection suspension system
CN104764575A (en) * 2014-01-03 2015-07-08 天津航天瑞莱科技有限公司 Combined vibration test apparatus and method
RU2556768C2 (en) * 2013-11-07 2015-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Universal stand for testing oscillation dampers
CN105510053A (en) * 2016-01-21 2016-04-20 中国汽车技术研究中心 Vehicle suspension clamping device for measuring braking noise
CN107894339A (en) * 2017-11-07 2018-04-10 燕山大学 Heavy vehicle and formula twin tires a quarter Active suspension simulation working condition tests platform
CN109406081A (en) * 2018-12-13 2019-03-01 北京长城华冠汽车技术开发有限公司 Brake disc mud guard vibration experiment and test method
CN113281057A (en) * 2021-04-30 2021-08-20 西南交通大学 Dynamic performance test platform for electric wheel and suspension system
CN113295438A (en) * 2021-05-07 2021-08-24 中国第一汽车股份有限公司 Testing system and testing method for air suspension air bag endurance test
CN113465950A (en) * 2021-07-23 2021-10-01 清华大学 Vehicle suspension rack

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103364207A (en) * 2012-04-01 2013-10-23 长春孔辉汽车科技有限公司 Multifunctional chassis test bed
CN103364207B (en) * 2012-04-01 2016-08-17 长春孔辉汽车科技股份有限公司 Multifunctional chassis testing stand
CN102768122A (en) * 2012-05-30 2012-11-07 哈尔滨工程大学 Measuring method of equipment endogenous characteristics under unbalanced turbulence force effect
CN103578460A (en) * 2012-07-19 2014-02-12 徐丰辰 Vehicle damping noise reduction method
CN103353403A (en) * 2013-06-28 2013-10-16 朱留存 Six-dimensional parallel-connection test bench for automobile suspension test
CN103353403B (en) * 2013-06-28 2016-08-31 朱留存 Six-dimensional parallel-connection test bench for automotive suspension test
RU2556768C2 (en) * 2013-11-07 2015-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Universal stand for testing oscillation dampers
CN104764575A (en) * 2014-01-03 2015-07-08 天津航天瑞莱科技有限公司 Combined vibration test apparatus and method
CN104764575B (en) * 2014-01-03 2017-08-25 天津航天瑞莱科技有限公司 One kind joint vibration testing device and method
CN104019998B (en) * 2014-06-18 2016-09-14 上海理工大学 Stiffness variable virtual body stiffness distribution method
CN104019998A (en) * 2014-06-18 2014-09-03 上海理工大学 Variable-rigidity virtual car body rigidity distribution method
CN104132821A (en) * 2014-08-08 2014-11-05 常州万安汽车部件科技有限公司 Fatigue testing system for vehicle hydraulic interconnection suspension system
CN105510053A (en) * 2016-01-21 2016-04-20 中国汽车技术研究中心 Vehicle suspension clamping device for measuring braking noise
CN105510053B (en) * 2016-01-21 2018-02-09 中国汽车技术研究中心 A kind of vehicle suspension clamping device for measuring brake oil
CN107894339A (en) * 2017-11-07 2018-04-10 燕山大学 Heavy vehicle and formula twin tires a quarter Active suspension simulation working condition tests platform
CN107894339B (en) * 2017-11-07 2019-09-27 燕山大学 Heavy vehicle and formula twin tires a quarter Active suspension simulation working condition tests platform
CN109406081A (en) * 2018-12-13 2019-03-01 北京长城华冠汽车技术开发有限公司 Brake disc mud guard vibration experiment and test method
CN109406081B (en) * 2018-12-13 2020-10-09 北京长城华冠汽车技术开发有限公司 Brake disc fender vibration test system and test method
CN113281057A (en) * 2021-04-30 2021-08-20 西南交通大学 Dynamic performance test platform for electric wheel and suspension system
CN113281057B (en) * 2021-04-30 2022-02-15 西南交通大学 Dynamic performance test platform for electric wheel and suspension system
CN113295438A (en) * 2021-05-07 2021-08-24 中国第一汽车股份有限公司 Testing system and testing method for air suspension air bag endurance test
CN113465950A (en) * 2021-07-23 2021-10-01 清华大学 Vehicle suspension rack
CN113465950B (en) * 2021-07-23 2022-08-26 清华大学 Vehicle suspension rack

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