CN105352743A - Method for testing fatigue performances of swinging arm - Google Patents
Method for testing fatigue performances of swinging arm Download PDFInfo
- Publication number
- CN105352743A CN105352743A CN201510666905.7A CN201510666905A CN105352743A CN 105352743 A CN105352743 A CN 105352743A CN 201510666905 A CN201510666905 A CN 201510666905A CN 105352743 A CN105352743 A CN 105352743A
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- swing arm
- test
- torsion bar
- ball pin
- fatigue
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for testing the fatigue performances of a swinging arm, and the method comprises the following steps: a, respectively installing a connecting shaft and a ball pin on a swinging arm installation seat and a ball pin installation seat; b, installing the swinging arm installation seat and the ball pin installation seat on a test bench; c, enabling the front end of a test torsion rod to be connected with a connecting support, enabling the tail end of the test torsion rod to be connected with a spline sleeve, and enabling the spline sleeve to be installed on a torsion rod fatigue testing machine; d, enabling a tested swinging arm to be installed on the test bench, enabling the connecting support to be connected with the tested swinging arm, and enabling the tested swinging arm to be pressed on the ball pin; e, applying a circular load to the test torsion rod through the fatigue testing machine, and transmitting the circular load to the tested swinging arm through the test torsion rod; f, judging that the fatigue performances are qualified if there is no crack when the number of circulating times reaches a certain value, or judging that the fatigue performances are not qualified if there is crack. Compared with the prior art, the method employs a simple structure which is low in manufacture cost and very convenient to use, and can accurately test the fatigue performance of the tested swinging arm.
Description
Technical field
The invention belongs to Automobile Parts Inspection field, particularly relating to a kind of method of the fatigue behaviour for testing swing arm.
Background technology
Suspension just refers to and forms whole back-up system by the spring between vehicle body and tire and shock absorber.The due function of suspension supports vehicle body, and improve the sensation taken, different suspensions arranges and driver can be made to have different driving experiences.Appearance seems the comprehensive multi-acting force of simple suspension, decides the stability of car, comfortableness and security, is one of very crucial parts of Modern Car.
The swing arm of automobile is a part of suspension, and be guiding and the support of suspension, its distortion will affect wheel alignment, reduces roadability.If the problematic words of front swing arm, feel to be exactly that bearing circle can rock, and hand to unclamp after bearing circle easily sideslip, also have and difficultly when running at high speed grasp direction.
Current enterprise all can carry out of crucial importance and very complicated multinomial test to suspension, for ensureing the quality of product.But but lack swing arm fatigue property test machinery, other detections of swing arm are all along with the suspension of entirety is tested together.Integrated testability is stalled for time very much, needs the preliminary work done too much before detection.Overall suspension, when testing, need to use whole parts, and test item is more, so just extends detection time.Therefore, the device of the fatigue behaviour of a kind of simple and convenient detection swing arm of current urgent need, can detect the performance of swing arm fast, thus helps research staff effectively can propose solution rapidly to going wrong, thus accelerate the R & D design speed of swing arm, help enterprise to control cost.
Summary of the invention
The present invention is directed to deficiency of the prior art, provide a kind of method of testing swing arm fatigue behaviour, structure is simple, low cost of manufacture and very easy to use, the fatigue behaviour of swing arm can be tested accurately, help research staff effectively can propose solution rapidly to going wrong, thus accelerate the R & D design speed of swing arm, help enterprise to control cost.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of method of testing swing arm fatigue behaviour, comprises following steps: step a: coupling shaft invention invention and ball pin invention invention are respectively installed in the invention of swing arm mount pad and the invention of ball pin mount pad; Step b: the invention of swing arm mount pad and the invention of ball pin mount pad are installed in test board invention; Step c: be connected with connection bracket test torsion bar invention front end, tail end is connected with spline housing, is then installed to by spline housing on torsion bar fatigue test machine; Steps d: tested swing arm invention is installed in test board invention, connection bracket is installed with tested swing arm invention and is connected, and the U-shaped portion of tested swing arm invention is pressed in ball pin invention invention; Step e: apply cyclic loading to the invention of test torsion bar by fatigue tester, then tests torsion bar invention and cyclic loading is passed to tested swing arm invention; Step f: cycle index reaches several times, if swing arm does not occur crackle, then the fatigue behaviour of swing arm is qualified, if there is crackle, then the fatigue behaviour of swing arm is defective.
The method use a kind of device testing swing arm fatigue behaviour, this device comprises test board invention and the invention of test torsion bar, described test board invention is provided with the invention of swing arm mount pad and the invention of ball pin mount pad, described test torsion bar invention front end is provided with connection bracket invention invention, described connection bracket invention invention is fixedly connected on that swing arm invention is upper thus the motion that described test torsion bar invent can be passed to this swing arm invents, described swing arm mount pad invention is connected and installed with coupling shaft invention invention by bolt invention invention, described coupling shaft invention invention is installed in this swing arm invention, described ball pin mount pad invention is provided with ball pin invention invention, described ball pin invention invention withstands on the bottom of described swing arm invention thus realizes location, the tail end of described test torsion bar invention is provided with spline, the invention of this test torsion bar has spline housing invention by spline joint, described spline housing invention invention is installed on torsion bar fatigue test machine.
Structure of the present invention is simple, low cost of manufacture and very easy to use, can test the fatigue behaviour of swing arm accurately, helps research staff effectively can propose solution rapidly to going wrong, thus accelerate the R & D design speed of swing arm, help enterprise to control cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of device used in the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail: as shown in Figure 1, test a method for swing arm fatigue behaviour, comprise following steps: step a: coupling shaft 52 and ball pin 41 are respectively installed on swing arm mount pad 3 and ball pin mount pad 4; Step b: swing arm mount pad 3 and ball pin mount pad 4 are installed on test board 1; Step c: be connected with connection bracket test torsion bar 2 front end, tail end is connected with spline housing, is then installed to spline housing on torsion bar fatigue test machine; Steps d: tested swing arm 5 is installed on test board 1, connection bracket is installed with tested swing arm 5 and is connected, and the U-shaped portion of tested swing arm 5 is pressed in ball pin 41; Step e: apply cyclic loading to test torsion bar 2 by fatigue tester, then tests torsion bar 2 and cyclic loading is passed to tested swing arm 5; Step f: cycle index reaches several times, if swing arm does not occur crackle, then the fatigue behaviour of swing arm is qualified, if there is crackle, then the fatigue behaviour of swing arm is defective.
The method use a kind of device testing swing arm fatigue behaviour, this device comprises test board 1 and test torsion bar 2, described test board 1 is provided with swing arm mount pad 3 and ball pin mount pad 4, described test torsion bar 2 front end is provided with connection bracket 22, described connection bracket 22 to be fixedly connected in swing arm 5 thus to make the motion of described test torsion bar 2 can be passed in this swing arm 5, described swing arm mount pad 3 is connected and installed with coupling shaft 52 by bolt 31, described coupling shaft 52 is installed in this swing arm 5, described ball pin mount pad 4 is provided with ball pin 41, described ball pin 41 withstands on the bottom of described swing arm 5 thus realizes location, the tail end of described test torsion bar 2 is provided with spline, this test torsion bar 2 has spline housing 21 by spline joint, described spline housing 21 is installed on torsion bar fatigue test machine.
Used herein to device in, swing arm mount pad 3 and ball pin mount pad 4 are installed on test board 1 by bolt and nut connected mode.
Used herein to device in, to be provided with xsect be polygonal cylinder in test torsion bar 2 end, connection bracket 22 is provided with and through hole that this cylinder matches, cylinder to insert in through hole thus will the Movement transmit of test torsion bar 2 in connection bracket 22.Test torsion bar 2 end can be provided with spline, also can be provided with regular hexagon, square or other shape, then arranges and its sky matched in connection bracket 22, thus the load of testing on torsion bar 2 can be passed in connection bracket 22.General in order to easy to process and test performance, what arrange in test torsion bar 2 end is spline.
Used herein to device in, connection bracket 22 is fastened by bolts and is installed in swing arm 5.
In order to help to detect, the tail end processing spline of test torsion bar 2, by spline joint spline housing 21.When needs work, spline housing is installed on torsion bar fatigue test machine.Fatigue tester applies cyclic loading to torsion bar, and then cyclic loading is passed to swing arm 2 by connection bracket 22 by torsion bar.
After this device having been installed tested swing arm 5, test torsion bar 2 is driven to start reciprocation cycle work, by connection bracket 22 by dynamic changes process to tested swing arm 5 by fatigue tester.The duty of the tested swing arm 5 after above-mentioned installation, is similar to the duty be arranged in suspension.When test torsion bar 2 is started working, when carrying out testing, it is exactly the state of imitating century work.By such emulation testing, the fatigue behaviour of tested swing arm 5 can be detected.Adopt the fatigue tester of specialty, the accuracy of test result can be ensured, embody specialty of the present invention.
This method, after the assembling of simulation real vehicle dress condition, be fixed on test board 1 by tested swing arm 5, then fatigue tester reverses by 15 ° to 59 ° and loads, and to carry out the loading of continuous circulation by the frequency of 2 ± 1HZ.Further, every 2 hours, check whether tested swing arm 5 occurs crackle or inefficacy, and occur both of these case, then instruction manual swing arm 45 is defective.If do not occurred, then proceed test, after cycle index arrives 300,000 times, stop test.Until 300,000 times, all there is not crackle or inefficacy, then illustrate that this tested swing arm is qualified.
Protection scope of the present invention includes but not limited to above embodiment, and protection scope of the present invention is as the criterion with claims, and any replacement that those skilled in the art will find apparent that, distortion, improvement made this technology all falls into protection scope of the present invention.
The present invention adopts reverse thinking, overcome swing arm out-of-shape and the movable erratic difficult problem of swing arm ball pin assembly, by fatigue tester, circulation moment of torsion is applied to torsion bar, then by torsion bar, moment of torsion is passed to swing arm to simulate the stressed of swing arm, thus achieve the test of the fatigue behaviour to swing arm.
Structure of the present invention is simple, low cost of manufacture and very easy to use, can test the fatigue behaviour of swing arm accurately, helps research staff effectively can propose solution rapidly to going wrong, thus accelerate the R & D design speed of swing arm, help enterprise to control cost.
Claims (2)
1. test a method for swing arm fatigue behaviour, it is characterized in that comprising following steps: step a: coupling shaft (52) and ball pin (41) are respectively installed on swing arm mount pad (3) and ball pin mount pad (4); Step b: swing arm mount pad (3) and ball pin mount pad (4) are installed on test board (1); Step c: will test torsion bar (2) front end and be connected with connection bracket, tail end is connected with spline housing, is then installed on torsion bar fatigue test machine by spline housing; Steps d: tested swing arm (5) is installed on test board (1), connection bracket is installed with tested swing arm (5) and is connected, and the U-shaped portion of tested swing arm (5) is pressed in ball pin (41); Step e: by fatigue tester, cyclic loading is applied to test torsion bar (2), then test torsion bar (2) and cyclic loading is passed to tested swing arm (5); Step f: cycle index reaches several times, if swing arm does not occur crackle, then the fatigue behaviour of swing arm is qualified, if there is crackle, then the fatigue behaviour of swing arm is defective.
2. a kind of method of testing swing arm fatigue behaviour according to claim 1, it is characterized in that: the method use a kind of device testing swing arm fatigue behaviour, this device comprises test board (1) and test torsion bar (2), described test board (1) is provided with swing arm mount pad (3) and ball pin mount pad (4), described test torsion bar (2) front end is provided with connection bracket (22), described connection bracket (22) is fixedly connected on swing arm (5) and goes up thus make the motion of described test torsion bar (2) can be passed in this swing arm (5), described swing arm mount pad (3) is connected and installed with coupling shaft (52) by bolt (31), described coupling shaft (52) is installed in this swing arm (5), described ball pin mount pad (4) is provided with ball pin (41), described ball pin (41) withstands on the bottom of described swing arm (5) thus realizes location, the tail end of described test torsion bar (2) is provided with spline, this test torsion bar (2) has spline housing (21) by spline joint, described spline housing (21) is installed on torsion bar fatigue test machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666905.7A CN105352743B (en) | 2015-10-15 | 2015-10-15 | A kind of method for testing swing arm fatigue behaviour |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666905.7A CN105352743B (en) | 2015-10-15 | 2015-10-15 | A kind of method for testing swing arm fatigue behaviour |
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| Publication Number | Publication Date |
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| CN105352743A true CN105352743A (en) | 2016-02-24 |
| CN105352743B CN105352743B (en) | 2018-01-16 |
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| CN201510666905.7A Active CN105352743B (en) | 2015-10-15 | 2015-10-15 | A kind of method for testing swing arm fatigue behaviour |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2366919C1 (en) * | 2008-04-07 | 2009-09-10 | Государственное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ПГУ) | Test bench for testing of motor vehicle suspension elements |
| CN101650238A (en) * | 2009-09-14 | 2010-02-17 | 昆山中瑞达电子有限公司 | Direct measurement type electronic device revolving shaft testing machine |
| CN201724811U (en) * | 2010-07-01 | 2011-01-26 | 奇瑞汽车股份有限公司 | Fatigue testing device of forked control arm of automobile |
| JP2011209117A (en) * | 2010-03-30 | 2011-10-20 | Howa Mach Ltd | Door open/close tester |
| CN202305198U (en) * | 2011-10-25 | 2012-07-04 | 上海汇众汽车制造有限公司 | Test fixture for automobile control arm |
| CN202661263U (en) * | 2012-07-09 | 2013-01-09 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Test device for rack test of front suspension and lower swing arm |
| CN204172631U (en) * | 2014-10-10 | 2015-02-25 | 宁波跃进汽车前桥有限公司 | A kind of automobile top link |
| CN204202864U (en) * | 2014-11-12 | 2015-03-11 | 广州汽车集团股份有限公司 | Swing arm class part durability degree test-bed |
-
2015
- 2015-10-15 CN CN201510666905.7A patent/CN105352743B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2366919C1 (en) * | 2008-04-07 | 2009-09-10 | Государственное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ПГУ) | Test bench for testing of motor vehicle suspension elements |
| CN101650238A (en) * | 2009-09-14 | 2010-02-17 | 昆山中瑞达电子有限公司 | Direct measurement type electronic device revolving shaft testing machine |
| JP2011209117A (en) * | 2010-03-30 | 2011-10-20 | Howa Mach Ltd | Door open/close tester |
| CN201724811U (en) * | 2010-07-01 | 2011-01-26 | 奇瑞汽车股份有限公司 | Fatigue testing device of forked control arm of automobile |
| CN202305198U (en) * | 2011-10-25 | 2012-07-04 | 上海汇众汽车制造有限公司 | Test fixture for automobile control arm |
| CN202661263U (en) * | 2012-07-09 | 2013-01-09 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Test device for rack test of front suspension and lower swing arm |
| CN204172631U (en) * | 2014-10-10 | 2015-02-25 | 宁波跃进汽车前桥有限公司 | A kind of automobile top link |
| CN204202864U (en) * | 2014-11-12 | 2015-03-11 | 广州汽车集团股份有限公司 | Swing arm class part durability degree test-bed |
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| CN105352743B (en) | 2018-01-16 |
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