CN102809491A - Method for detecting suspension shock absorption performance of automobile power assembly - Google Patents
Method for detecting suspension shock absorption performance of automobile power assembly Download PDFInfo
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- CN102809491A CN102809491A CN2012102864023A CN201210286402A CN102809491A CN 102809491 A CN102809491 A CN 102809491A CN 2012102864023 A CN2012102864023 A CN 2012102864023A CN 201210286402 A CN201210286402 A CN 201210286402A CN 102809491 A CN102809491 A CN 102809491A
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Abstract
The invention discloses a method for detecting suspension shock absorption performance of an automobile power assembly. The method comprises the steps of pre-test preparation, preload application test and detection of dynamic-static stiffness, and the method is implemented by use of a vibrating test bench which can realize two-shaft linkage as well as a two-shaft linkage test tool. According to the method for detecting the suspension shock absorption performance of the automobile power assembly, the traditional test method is changed, the dynamic-static stiffness in X direction and Y direction is detected under the condition of Z direction preload suspension of the power assembly and the objectivity and the correctness of detection data are ensured; movement interference and prestress can be eliminated and the normal proceeding of the test and the correctness of the detection-test data are ensured; the preload applied by a suspension test of the power assembly can be borne by a machine base of equipment, and a moving shaft and a sensor of the equipment are protected from being damaged by shear force; the problem of component force generated by the preload due to angle generation of arc movement in the prior art is solved, the correctness of the preload is ensured and therefore the correctness of the test result is guaranteed.
Description
Technical field
The invention belongs to the detection range of automobile, be specially a kind of detection method of automobile power assembly suspending damping performance.
Background technology
Nowadays, people require increasingly highly to car comfort, and dynamic assembly suspension is as the most key damping part of automobile, and its performance demands also improves thereupon.Three directions of dynamic assembly suspension (X to-vertically; Y to-laterally; Z to-vertical, direction is reference with the vehicle complete vehicle coordinate system) sound rigidity be the key index of its damping performance of decision, the size of dynamic assembly suspension three-dimensional sound rigidity need be obtained and estimate through detecting test.Because of dynamic assembly suspension after entrucking; Its vertical effect of always bearing automobile power assembly (engine and wheel box) gravity; In order to reflect dynamic assembly suspension entrucking actual performance afterwards the most really; The test of three the direction sound rigidity that will the demanded driving force assembly suspend should be after dynamic assembly suspension bears entrucking be carried out under the state of static preload (being the component of power assembly gravity); For example at dynamic assembly suspension Z under the prerequisite of (vertical) preload, detect its X to (vertically) and Y sound rigidity to (laterally).
In the test of traditional dynamic assembly suspension sound rigidity (being damping performance); Because of lacking corresponding diaxon or three-shaft linkage testing equipment and frock; Often detect X to, Y in performance, not at Z to applying preload, detect the X that draws and have than large deviation thereby make to, the rigidity situation of Y under sound rigidity applying working condition actual with it; The damping performance that can not reflect dynamic assembly suspension really brings very big inconvenience for the exploitation and the design optimization of dynamic assembly suspension.
At present, the existing test frock of test dynamic assembly suspension sound rigidity under the preloaded condition that can realize is mainly: the preload axle of dynamic assembly suspension test and cylinder are for being articulated and connected.There is following shortcoming in this detection method: at first because the preload direction of dynamic assembly suspension and test direction are the both directions of quadrature each other; And the motion of both direction is straight reciprocating motion, can move if jig Design is unreasonable to interfere and cause test to carry out.Secondly preload force is born through action shaft and sensor after being applied on the dynamic assembly suspension, makes action shaft and sensor bear radial shear power for a long time, is easy to cause the loss of action shaft and sensor, loses standard and device damage thereby cause detecting data.Can not well eliminate prestress at last, have a strong impact on the accuracy that detects data.
Summary of the invention
The technical matters that the present invention solved is to provide a kind of detection method of automobile power assembly suspending damping performance, and the preload direction that suspends with solution prior art medium power assembly exists movement interference and action shaft and sensor to bear the problem that radial shear power causes device damage and DATA REASONING to be forbidden for a long time with the test direction.
Technical problem solved by the invention adopts following technical scheme to realize:
A kind of detection method of automobile power assembly suspending damping performance comprises the preceding preparation of test, applies preload test and the detection of sound rigidity, and employing can realize that the vibration table of two-axle interlocking and two-axle interlocking test frock realize.
Prepare before the test; The base and the vibration table frame of the frock that at first will link are used the bolt rigid attachment; Testing the product that suspends on the frock through the stationary fixture clamping again; Wherein suspending needs the direction of preload force value (be generally Z to) consistent with the direction of preload mechanical axis, and the direction that needs to detect (X to or Y to) is consistent with the action shaft direction.
Apply the preload test, at first apply preload force, through L template, assembling panel, reinforcement and base preload force is applied on the equipment rack then through the preload mechanical axis; Secondly, on the test direction, test power is applied on the product that suspends and makes an experiment through accurate straight ball-guide, L template and stationary fixture.The load of institute's preload is applied on the assembling panel through the accurate straight ball-guide and the L template of frock bottom, thereby preload is applied on the frame, makes the sensor on the action shaft not bear preload.
Sound rigidity detects; Keep the preload mechanical axis motionless; Start action shaft this moment, and the up-down vibration of action shaft can be eliminated the movement interference with the preload mechanical axis through the accurate straight ball-guide on the assembling panel, detect then suspend X to or Y in the sound rigidity of Z under preloaded condition.
The above-mentioned mode that applies preload in the preload test is power value or displacement.
Through this two-axle interlocking test method; Preload force is eliminated on equipment rack; Protection action shaft and sensor are not damaged, and eliminate the interference and the preload force of orthogonal straight lines motion simultaneously through accurate straight ball-guide, and what guaranteed to test normally carries out the accuracy with test figure.
Compared with prior art, the present invention has the following advantages:
1, change traditional test method, be implemented in dynamic assembly suspension Z under the situation of preload, detect X to, Y to sound rigidity, guarantee to detect the objectivity and the accuracy of data.
2, can eliminate movement interference and prestress, the accuracy of normally carrying out and detect test figure of warranty test.
3, can bear the preload force that the dynamic assembly suspension test applies through the support of equipment, guarantee that the action shaft and the sensor of equipment do not receive shearing force, protection action shaft and sensor are not damaged.
4, eliminate the prior art circular motion and produce angle and make preload force produce the problem of component, guarantee the accuracy of preload force, thus warranty test result's accuracy.
Description of drawings
Fig. 1 is the structural representation of vibration table.
Fig. 2 is the side structure synoptic diagram of two-axle interlocking test frock.
Fig. 3 is the axle side structure synoptic diagram of two-axle interlocking test frock.
Embodiment
Be easy to understand and understand in order to make technological means of the present invention, creation characteristic, workflow, method of application reach purpose and effect, below further set forth the present invention.
A kind of detection method of automobile power assembly suspending damping performance realizes through the vibration table and the two-axle interlocking test frock that can realize two-axle interlocking.
Saidly can realize that the vibration table of two-axle interlocking is a standard device, its structural representation is seen Fig. 1.
Like Fig. 2, shown in Figure 3, a kind of two-axle interlocking test frock that suspends comprises frame 1, and frame 1 top is provided with through bolt can be at the base 2 of frame 1 enterprising line slip.Base 2 bottom hollows so that enough spaces are arranged for vibration action shaft and sensor on the frame 1, unlikely action shaft and sensor when vibration and base 2 interfere.The side of base 2 upper surfaces is connected with the assembling panel 3 of vertical placement through screw; The front of assembling panel 3 is provided with two groups of accurate straight ball-guides 5; Simultaneously, base 2 upper surfaces are provided with other two groups of accurate straight ball-guides 5, and base 2 lower surfaces are provided with action shaft and sensor 7.
Wherein, between four groups of accurate straight ball-guides 5, be placed with L template 8.Through using L template 8, can realize that the load quadrature applies at mutually orthogonal both direction, eliminate the component that original circular motion produces, guarantee to apply the accuracy of power value, can also realize the interlock of orthogonal straight lines motion and do not interfere each other.
Wherein, L template 8 is provided with stationary fixture 9, and stationary fixture 9 both sides are respectively equipped with two preload mechanical axis 10.In the practical application, the L template 8 applicable multiple fixedly anchor clamps of usefulness of product that suspend have extremely strong versatility.
The bottom surface of L template 8 all is connected through the slide block of screw with four groups of accurate straight ball-guides 5 with sidewall.Use accurate straight ball-guide 5 to possess multiple benefit, as: the front bearing load is big, and resistance to rolling is minimum, can under the effect of big preload force, guarantee minimum resistance to rolling; Realize the motion of test direction when can guarantee to realize the product preload, warranty test normally carries out; Can bear bigger vertical and horizontal moment, good stability guarantees the stability in the two-axle interlocking process of the test; Stroke can satisfy product sound rigidity stroke 30 millimeters the testing requirements at the most that suspends fully up to the hundreds of millimeter, thoroughly solves the problem that the prior art stroke can not satisfy testing requirements.
In addition, between two groups that assemble panel 3 fronts accurate straight ball-guides 5 and L template 8, be provided with base plate 6.
Concrete, stationary fixture 9 links to each other with the bottom surface of L template 8 through screw, and wherein the bottom surface of L template 8 is provided with the threaded hole that matees with screw.
Two sides at assembling panel 3 back sides are equipped with a reinforcement 4.Further, the bottom of two reinforcements 4 all links to each other with base 2; Wherein, be equipped with threaded hole on the position that joins with assembling panel 3 and base 2 on two reinforcements 4.
In addition, the front of assembling panel 3 is provided with threaded hole, and the front of assembling panel 3 is connected through the slide rail of threaded hole and screw fit two groups of accurate straight ball-guides 5 corresponding with it.
The back side of assembling panel 3 is provided with counter sink, and the back side of assembling panel 3 is connected with screw fit two reinforcements 4 corresponding with it through counter sink.
The bottom of assembling panel 3 is processed with threaded hole, and the bottom of assembling panel 3 links to each other with base 2 through threaded hole, has guaranteed that annexation has very high rigidity and good verticality.
Above-mentioned base 2 is connected with the frame 1 of equipment, can the preload force of process of the test be eliminated on frame 1, and the action shaft of warranty test direction and sensor do not receive the shearing force effect, thereby have protected action shaft and sensor not to be damaged.
The present invention utilizes said apparatus that a kind of detection method of automobile power assembly suspending damping performance is provided, and comprises the preceding preparation of test, applies preload test and the detection of sound rigidity.
Prepare before the test; The base 2 and the vibration table frame 1 of the frock that at first will link are used the bolt rigid attachment; Testing the product that suspends on the frock through stationary fixture 9 clampings again; Wherein suspending needs the direction of preload force value (be generally Z to) consistent with the direction of preload mechanical axis 10, and the direction that needs to detect (X to or Y to) is consistent with the action shaft direction.
Apply the preload test, at first apply preload force (mode of preload has two kinds: power value or displacement), through L template 8, assembling panel 3, reinforcement 4 and base 2 preload force is applied on the equipment rack 1 then through preload mechanical axis 10; Secondly, on the test direction, test power is applied on the product that suspends and makes an experiment through accurate straight ball-guide 5, L template 8 and stationary fixture 9.The load of institute's preload is applied on the assembling panel 3 with L template 8 through the accurate straight ball-guide 5 of frock bottom, thereby preload is applied on the frame 1, makes the sensor on the action shaft not bear preload.
Sound rigidity detects; Keep preload mechanical axis 10 motionless; Start action shaft this moment, and the up-down vibration of action shaft can be eliminated the movement interference with preload mechanical axis 10 through the accurate straight ball-guide on the assembling panel 35, detect then suspend X to or Y in the sound rigidity of Z under preloaded condition.
Through this two-axle interlocking test method; Preload force is eliminated on equipment rack 1; Protection action shaft and sensor 7 are not damaged, and eliminate the interference and the preload force of orthogonal straight lines motion simultaneously through accurate straight ball-guide, and what guaranteed to test normally carries out the accuracy with test figure.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the instructions just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The protection domain that requires of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the detection method of an automobile power assembly suspending damping performance comprises the preceding preparation of test, applies preload test and the detection of sound rigidity; It is characterized in that: employing can realize that the vibration table of two-axle interlocking and two-axle interlocking test frock realize;
Prepare before the test; The base and the vibration table frame of the frock that at first will link are used the bolt rigid attachment; Testing the product that suspends on the frock through the stationary fixture clamping again; Wherein suspending needs the direction of preload force value consistent with the direction of preload mechanical axis, needs the direction of detection consistent with the action shaft direction;
Apply the preload test, at first apply preload force, through L template, assembling panel, reinforcement and base preload force is applied on the equipment rack then through the preload mechanical axis; Secondly, on the test direction, test power is applied on the product that suspends and makes an experiment through accurate straight ball-guide, L template and stationary fixture;
Sound rigidity detects; Keep the preload mechanical axis motionless; Start action shaft this moment, and the up-down vibration of action shaft can be eliminated the movement interference with the preload mechanical axis through the accurate straight ball-guide on the assembling panel, detect then suspend X to or Y in the sound rigidity of Z under preloaded condition.
2. the detection method of a kind of automobile power assembly suspending damping performance according to claim 1 is characterized in that: the said mode that applies preload in the preload test is power value or displacement.
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| CN201210286402.3A CN102809491B (en) | 2012-08-14 | 2012-08-14 | Method for detecting suspension shock absorption performance of automobile power assembly |
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| CN201210286402.3A CN102809491B (en) | 2012-08-14 | 2012-08-14 | Method for detecting suspension shock absorption performance of automobile power assembly |
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| CN102809491B CN102809491B (en) | 2014-09-17 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103234721A (en) * | 2013-04-16 | 2013-08-07 | 沈阳兴华航空电器有限责任公司 | Universal adjustable mounting platform for vibration tests |
| CN104535313A (en) * | 2014-12-26 | 2015-04-22 | 建新赵氏集团有限公司 | Hydraulic suspension dynamic rapid testing tool |
| CN104634510A (en) * | 2015-01-16 | 2015-05-20 | 王瑞 | Quick detection fixture for hydraulic suspension damper |
| CN106383032A (en) * | 2016-09-19 | 2017-02-08 | 东风汽车公司 | Power assembly fixing clamp for speeding up interior noise contribution removal test |
| CN106568604A (en) * | 2016-11-09 | 2017-04-19 | 华南理工大学 | Calculation method for vibration isolation rate of automotive power assembly suspension system |
| CN107631886A (en) * | 2017-08-23 | 2018-01-26 | 潍柴动力股份有限公司 | Quiet, dynamic stiffness the test system and method for testing of a kind of suspending cushion |
| CN108645581A (en) * | 2018-05-08 | 2018-10-12 | 西南交通大学 | A kind of dynamic stiffness test experiments equipment |
| CN109141719A (en) * | 2018-09-10 | 2019-01-04 | 宁波拓普集团股份有限公司 | A kind of device and its measurement method that measurement automobile power assembly suspension system is preloading |
| CN109387343A (en) * | 2017-08-03 | 2019-02-26 | 上海汽车集团股份有限公司 | Auxiliary mould structure, uni-axial press system and test method |
| CN109596369A (en) * | 2018-12-28 | 2019-04-09 | 北汽福田汽车股份有限公司 | Suspension divertical motion interferes the test method of test-bed and the interference of suspension divertical motion |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234721A (en) * | 2013-04-16 | 2013-08-07 | 沈阳兴华航空电器有限责任公司 | Universal adjustable mounting platform for vibration tests |
| CN103234721B (en) * | 2013-04-16 | 2016-06-01 | 沈阳兴华航空电器有限责任公司 | A kind of general adjustable vibration test erecting stage |
| CN104535313A (en) * | 2014-12-26 | 2015-04-22 | 建新赵氏集团有限公司 | Hydraulic suspension dynamic rapid testing tool |
| CN104634510A (en) * | 2015-01-16 | 2015-05-20 | 王瑞 | Quick detection fixture for hydraulic suspension damper |
| CN106383032A (en) * | 2016-09-19 | 2017-02-08 | 东风汽车公司 | Power assembly fixing clamp for speeding up interior noise contribution removal test |
| CN106568604A (en) * | 2016-11-09 | 2017-04-19 | 华南理工大学 | Calculation method for vibration isolation rate of automotive power assembly suspension system |
| CN109387343A (en) * | 2017-08-03 | 2019-02-26 | 上海汽车集团股份有限公司 | Auxiliary mould structure, uni-axial press system and test method |
| CN107631886A (en) * | 2017-08-23 | 2018-01-26 | 潍柴动力股份有限公司 | Quiet, dynamic stiffness the test system and method for testing of a kind of suspending cushion |
| CN108645581A (en) * | 2018-05-08 | 2018-10-12 | 西南交通大学 | A kind of dynamic stiffness test experiments equipment |
| CN108645581B (en) * | 2018-05-08 | 2020-02-14 | 西南交通大学 | Dynamic stiffness test experimental equipment |
| CN109141719A (en) * | 2018-09-10 | 2019-01-04 | 宁波拓普集团股份有限公司 | A kind of device and its measurement method that measurement automobile power assembly suspension system is preloading |
| CN109141719B (en) * | 2018-09-10 | 2020-08-04 | 宁波拓普集团股份有限公司 | Device and method for measuring preload of automobile power assembly suspension system |
| CN109596369A (en) * | 2018-12-28 | 2019-04-09 | 北汽福田汽车股份有限公司 | Suspension divertical motion interferes the test method of test-bed and the interference of suspension divertical motion |
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| CN102809491B (en) | 2014-09-17 |
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Address after: 545100 No. 70 West Yongxing Road, third industrial zone, the Liujiang River County, the Guangxi Zhuang Autonomous Region, Liuzhou Patentee after: LIUZHOU RIGAO AUTOMOBILE VIBRATION TECHNOLOGY CO., LTD. Address before: 545100 No. 70 West Yongxing Road, third industrial zone, the Liujiang River County, the Guangxi Zhuang Autonomous Region, Liuzhou Patentee before: Liuzhou Gao rubber Co., Ltd |