CN101556204B - Impact test method for restoration characteristics of motorcycle front suspension - Google Patents
Impact test method for restoration characteristics of motorcycle front suspension Download PDFInfo
- Publication number
- CN101556204B CN101556204B CN2009100313240A CN200910031324A CN101556204B CN 101556204 B CN101556204 B CN 101556204B CN 2009100313240 A CN2009100313240 A CN 2009100313240A CN 200910031324 A CN200910031324 A CN 200910031324A CN 101556204 B CN101556204 B CN 101556204B
- Authority
- CN
- China
- Prior art keywords
- front suspension
- test method
- wheel
- test
- force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The invention discloses an impact test method for the restoration characteristics of a motorcycle front suspension and is characterized in that two front shock absorbers and wheels are assembled to form a front suspension to be tested integrally, the front suspension is compressed to a limit position by a lifting device followed by being released; when the wheels rebound under the action of gravity and the springs of the shock absorbers, the restoration damping works; and an accelerometer is used for testing acceleration when the wheels rebound and touch down. The tested maximal acceleration value can be less than a permissive value. The test method is much closer to an actual user mode, that the test results can be used as evaluation criterion of restoration damping characteristics of a high performance shock absorber for shock absorber manufacturers.
Description
Technical field
The invention belongs to the experimental technique field.Relate to a kind of impact test method, especially relate to a kind of impact test method for restoration characteristics of motorcycle front suspension.
Background technology
Vibroshock is the vitals of motorcycle, except utilizing the spring buffer vibration, mainly is to produce the energy that damping absorbs vibration by inside.Therefore, the vibroshock damping characteristic directly influences driver comfort and security.The damping characteristic of vibroshock is made up of compression damping and recovery damping two parts, and wherein restoration damping characteristics is particularly crucial to the comfortableness of motorcycle when uneven road surface is driven.For a long time, the vibroshock industry adopts show merit characteristic (power and displacement relation) and velocity characteristic (relation of power and speed) to recording with the sine excitation test unit behind the single vibroshock dismounting spring to reflect the vibroshock damping characteristic always both at home and abroad, the industry standard " motorcycle and trail bike vibroshock test condition and test method " (QC/T 61-2008) of the new revision of China 2008 though in increased pilot projects such as vibroshock stiction tests, to the test method of vibroshock damping characteristic still with identical in the past.Test method does not directly reflect the acceleration signature of damping, and because the people to the susceptibility of acceleration, is reflected in the comfortableness that driver's acceleration on one's body directly has influence on the driver after wheel is hit.There is bigger difference in the vibroshock test method of prescribed by standard and actual motorcycle suffered shock load operating mode when uneven road surface travels, therefore be necessary to seek a kind of new goodness of fit that improves vibroshock restoration characteristics experimental test result and actual road conditions more near the test method of actual working state, for the judge and the new product development of vibroshock damping characteristic provides stronger foundation.
Summary of the invention
The objective of the invention is in order to overcome the deficiency that prior art exists, solve the relevant technologies problem, two front dampers and wheel installation composition front suspension integral body are tested in employing, and test method is divided into four steps: test specimen installation, lifting, release, parameter testing and judge.Test mode near with actual user mode, discharge after by lifting gear front suspension being compressed to extreme position, when wheel during resilience, restores damping and works the acceleration when contacting to earth with accelerometer test carriage samsara bullet under the bumper spring effect.The maximum acceleration value of surveying should be lower than License Value, and test findings is used for estimating the dynamic restoration characteristics behind vibroshock and the synthetic suspension of set of wheels.
For reaching above-mentioned technical purpose, the invention provides a kind of impact test method for restoration characteristics of motorcycle front suspension, with front suspension 8, be clamped in by clamp device 18 on the oblique bearing 20 of test-bed 1 by the front fork stem 19 that is connected with anchor clamps 10, adopt hoisting gear 16 to make two front dampers 9 be compressed into extreme position along its axis by lifting wheel 5; Discharge extension bar 12 by fast separation device 14, make wheel 5 under the effect of gravity P under front damper 9 contained springs and the spring, resilience rapidly, the recovery damping force decay returned energy that front damper 9 produces in springback process, when tire 6 contacts to earth, measure acceleration and time and displacement and time relation by accelerometer 3 and displacement transducer 21, and pass judgment on the dynamic restoration characteristics of front suspension 8 according to measured peak acceleration.
Above-mentioned described hoisting gear 16 lower ends are provided with force transducer 15, and the connection fast separation device 14 of force transducer 15 belows is connected with wheel 5 with hawser 11 by extension bar 12.
Above-mentioned described front suspension 8 is made up of wheel 5, front damper 9 and front fork stem 19; Sprung mass is made up of wheel 5, brake flange 7 and the every other unsprung mass that is fastened on the axletree 4 during test; Between front suspension 8 relative motion parts, a displacement transducer 21 is housed.
Above-mentioned described test-bed 1 is by base 2, column 22 and put the beams in place 17, tiltedly bearing 20 and clamp device 18 are formed, and oblique bearing 20 inclination angles can be adjusted by the different mounted angles of survey front suspension 8.
Above-mentioned described force transducer 15 is used for the lifting force value of lifting process to be measured, and lifting force and front damper 9 suffered force of compression have following relation:
F wherein
LBe lifting force, F
YmaxPermission axial load when compressing fully for front damper 9,1.2 for considering the experience correction factor of gravity and friction force.
A kind of impact test method for restoration characteristics of motorcycle front suspension provided by the invention, be mainly used to estimate the dynamic restoration damping characteristics of front suspension vibroshock, because the people is to the susceptibility of acceleration, test findings has reflected the operating mode on actual road surface more really, can be used as the evaluation foundation of vibroshock manufacturing enterprise to the high performance absorber restoration damping characteristics.
Description of drawings
Accompanying drawing 1 is the front elevation of test unit of the present invention;
Accompanying drawing 2 is displacement and time chart;
Accompanying drawing 3 is acceleration and time chart;
Among the figure: 1, test-bed, 2, base, 3, accelerometer, 4, axletree, 5, wheel, 6, tire, 7, brake flange, 8, front suspension, 9, front damper, 10, anchor clamps, 11, hawser, 12, extension bar, 13, handle, 14, fast separation device, 15, force transducer, 16, hoisting gear, 17, put the beams in place 18, clamp device, 19, front fork stem, 20, oblique bearing, 21, displacement transducer, 22, column.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: in the accompanying drawing 1, test unit is made up of test-bed 1, hoisting gear 16, fast separation device 14, extension bar 12 and the oblique bearing 20 etc. that promotes hawser 11, clamp device 18 and angle adjustable.By anchor clamps 10 with the installation that is connected as a single entity of front fork stem 19 and front suspension 8.The measuring-signal of force transducer 15, displacement transducer 21, accelerometer 4 is sent to the data collecting card that is inserted in the computing machine through signal conditioner, by computer programming, show the data of surveying and draw speed and time curve and acceleration and time curve.
The assembly parts that front suspension 8 is made up of two front dampers 9 and wheel 5, axletree 4 etc., and pass through anchor clamps 10 and be connected with front fork stem 19.Front suspension 8 integral body are carried out the restoration damping characteristics test, with present the vertical existing test method that sine excitation is installed of single vibroshock removal spring is compared, introduced and tilted to install side force, spring action, the wheel weight that produces, factors such as a pair of front damper 9 effect simultaneously, the practical working situation that has reflected vibroshock, the realistic requirement of test findings can obtain more true and reliable test figure.
The installment state of tested front suspension 8 be wheel 5 when being placed on base 2 front fork stem 19 be elongation height naturally, and press the inclination alpha installation of design drawing regulation, and front fork stem 19 be fixedly clamped by clamp device 18.Before the test, have installation position displacement sensor 21 between the part of relatively moving, accelerometer 3 is installed on the axle bed that is connected with axletree 4 at front suspension 8.Displacement transducer 21 and accelerometer 4 mounting interfaces be for can conveniently install and remove structure, so that when changing test specimen, dismounting is facility fast.
Hoisting gear 16 is the hydraulic cylinder of an adjustable speed, also can adopt the motor-driven leading screw and nut mechanism to realize.Equally, fast separation device 14 can be realized by hydraulic means, also can adopt mechanical mechanism to realize that present embodiment adopts a lever-operated mechanical type fast separation device, by the operation realization separation of handle 13.
Produce excessive damping force for fear of the too fast front damper that causes of pulling speed, pulling speed promotes according to the speed that force transducer 15 measurement data keep being not more than 100N/s, promotes the accuracy of the in stable condition and test figure that helps keeping front damper internal hydraulic pressure oil at a slow speed.
For ease of installing, force transducer 15 is selected spoke structure for use, is connected with fast separation device 14 with lifting gear 17 respectively by screw.Extension bar 12 is as the connecting interface of hawser 11 connection fast separation devices 14, and hawser 11 bottoms link to each other with wheel.
Fig. 2 is displacement and the time history after front suspension 8 is released from the compression limit position, records by displacement transducer 21.
Fig. 3 is acceleration and the time history after front suspension 8 is released from the compression limit position, records by accelerometer 3.
When front suspension 8 is carried out the restoration damping characteristics test, be warranty test result's accuracy and objectivity, test should repeat repeatedly, as 3～5 times.For the situation that exceeds the index setting in the single test maximum acceleration value, the mean value of the peak acceleration that the employing test of many times records is passed judgment on.
Claims (4)
1. impact test method for restoration characteristics of motorcycle front suspension, it is characterized in that: the installation of test specimen is with front suspension (8), is clamped on the oblique bearing (20) of test-bed (1) by clamp device (18) by the front fork stem (19) that is connected with anchor clamps (10); Adopt hoisting gear (16) to make two front dampers (9) be compressed into extreme position and stop before the test along its axis by lifting wheel (5); Discharge extension bar (12) by fast separation device (14), make wheel (5) under the effect of front damper (9) contained spring and gravity P, resilience rapidly; Measure springback process and tire (6) when contacting to earth by accelerometer (3) and displacement transducer (21), acceleration and time and displacement and time relation curve, and pass judgment on the dynamic restoration characteristics of front suspension (8) according to measured peak acceleration; Described hoisting gear (16) lower end is provided with force transducer (15), and the connection fast separation device (14) of force transducer (15) below is connected with wheel (5) with hawser (11) by extension bar (12).
2. a kind of impact test method for restoration characteristics of motorcycle front suspension according to claim 1 is characterized in that described front suspension (8) is made up of wheel (5), front damper (9) and front fork stem (19); Sprung mass is made up of wheel (5), brake flange (7) and the every other unsprung mass that is fastened on the axletree (4) during test; Between front suspension (8) relative motion part, a displacement transducer (21) is housed.
3. a kind of impact test method for restoration characteristics of motorcycle front suspension according to claim 1, it is characterized in that described test-bed (1) by base (2), column (22) and put the beams in place (17), tiltedly bearing (20) and clamp device (18) are formed, oblique bearing (20) inclination angle can be adjusted by the different mounted angles of survey front suspension (8).
4. a kind of impact test method for restoration characteristics of motorcycle front suspension according to claim 1, it is characterized in that described force transducer (15) is used for the lifting force value measurement of lifting process, the suffered force of compression of lifting force and front damper (9) has following relation:
F wherein
LBe lifting force, F
YmaxBe the permission axial load of front damper (9) when compressing fully, 1.2 for considering the experience correction factor of gravity and friction force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100313240A CN101556204B (en) | 2009-05-08 | 2009-05-08 | Impact test method for restoration characteristics of motorcycle front suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100313240A CN101556204B (en) | 2009-05-08 | 2009-05-08 | Impact test method for restoration characteristics of motorcycle front suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101556204A CN101556204A (en) | 2009-10-14 |
| CN101556204B true CN101556204B (en) | 2010-12-08 |
Family
ID=41174404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100313240A Expired - Fee Related CN101556204B (en) | 2009-05-08 | 2009-05-08 | Impact test method for restoration characteristics of motorcycle front suspension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101556204B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156050B (en) * | 2011-02-18 | 2012-06-27 | 吉林大学 | Manipulator pull-down quick vehicle release device |
| CN103698135B (en) * | 2013-12-16 | 2016-05-18 | 江苏科技大学 | A kind of front damper of motorcycle Static load characteristics experimental rig |
| CN106679998B (en) * | 2016-12-15 | 2023-04-07 | 东莞市海达仪器有限公司 | Whole car tester |
| CN106950023A (en) * | 2017-03-17 | 2017-07-14 | 中国船舶重工集团公司第七�三研究所 | A kind of F t curve simulation devices |
| CN109540706B (en) * | 2018-12-28 | 2023-10-31 | 长安大学 | Impact resistance testing device and testing method for road material |
| CN112179683B (en) * | 2020-09-18 | 2022-02-01 | 安徽江淮汽车集团股份有限公司 | Macpherson suspension collision test device |
| CN112683674A (en) * | 2020-12-23 | 2021-04-20 | 曹源花 | Automobile shock absorber ware shock attenuation intensity check out test set |
| CN113324769B (en) * | 2021-05-28 | 2022-04-01 | 重庆大学 | Suspension test bed, hardware-in-loop test system and hardware-in-loop test method |
| CN115791140B (en) * | 2023-02-01 | 2023-06-23 | 扬州德威尔汽车减震器有限公司 | Pressure detection device is used in processing of automobile shock absorber ware |
-
2009
- 2009-05-08 CN CN2009100313240A patent/CN101556204B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101556204A (en) | 2009-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101556204B (en) | Impact test method for restoration characteristics of motorcycle front suspension | |
| CN101718632B (en) | Multifunctional test bed for simulating condition by one-quarter suspension of vehicle | |
| CN102745197B (en) | Method for identifying current driving road condition for automobile on basis of analytical simulation of damping of shock absorber | |
| CN107782569B (en) | Universal test platform for three-axis six-channel suspension | |
| CN111241706B (en) | Automobile suspension dynamic load performance evaluation method based on dynamic K & C test system | |
| CN1815158A (en) | Multifunction shockabsorber for automobile and quarter cantilever operation-condition-simulating testing table | |
| CN108692924B (en) | Torsion fatigue test device for automobile leaf spring | |
| CN201034827Y (en) | Vehicle one quarter simulating suspension system and vibration-damper characterist synthetic test-bed | |
| Calvo et al. | Influence of a shock absorber model on vehicle dynamic simulation | |
| CN103630377B (en) | A kind of rear shock absorber of motorcycle Static load characteristics test unit | |
| CN201548409U (en) | Simulated condition multifunctional test bed of one-quarter suspension of vehicle | |
| CN100489481C (en) | Automobile absorber damping force indisintegrated quick-measuring method | |
| CN105527066A (en) | Steel plate spring assembly impact resistance testing machine | |
| CN2932360Y (en) | Multifunctional automobile shock absorber and 1/4 suspension simulative working condition test bed | |
| CN208155610U (en) | Semi-active suspension system testing stand based on rotary type MR damper | |
| CN201680979U (en) | Automobile shock absorber testing platform | |
| CN205352713U (en) | Wheel force transfer function testing arrangement under whole car state of simulation | |
| CN107907352A (en) | Vehicle active suspension performance detection stand | |
| RU145067U1 (en) | VEHICLE SUSPENSION TEST STAND | |
| CN102768089B (en) | Method for reducing vibration force of chassis dynamometer force sensor | |
| CN109655289A (en) | A kind of air hanging device for car performance endurance test mechanism | |
| CN211013519U (en) | Automobile loading brake inspection bench | |
| Koulocheris et al. | Dynamic analysis of the suspension system of a heavy vehicle through experimental and simulation procedure | |
| CN205352716U (en) | Automobile shock absorber ware test bench | |
| Sani et al. | Study on dynamic characteristics of automotive shock absorber system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 212028 Zhenjiang, Dantu Metro Industrial Park Rui East Road, No. 9 Patentee after: Jiangsu University of Science and Technology Address before: 212003 Zhenjiang,, Jiangsu, Jiangsu University of Science and Technology, No. Patentee before: Jiangsu University of Science and Technology |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20130508 |