CN102809491B - 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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- CN102809491B CN102809491B CN201210286402.3A CN201210286402A CN102809491B CN 102809491 B CN102809491 B CN 102809491B CN 201210286402 A CN201210286402 A CN 201210286402A CN 102809491 B CN102809491 B CN 102809491B
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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 field of automobile, be specially a kind of detection method of automobile power assembly suspending damping performance.
Background technology
Nowadays, people are more and more higher to the requirement of car comfort, and dynamic assembly suspension is as the most key damping part of automobile, and the requirement of its performance also improves thereupon.Three directions of dynamic assembly suspension (X to-longitudinally, Y-direction-laterally, Z-direction-vertical, direction with vehicle complete vehicle coordinate be with reference to) sound rigidity be to determine the key index of its damping performance, the size of dynamic assembly suspension three-dimensional sound rigidity need to be tested to obtain and be evaluated by detection.Because dynamic assembly suspension is after entrucking, its vertical effect of always bearing automobile power assembly (engine and wheel box) gravity, in order to reflect the most really dynamic assembly suspension entrucking actual performance afterwards, the test of three the direction sound rigidity that will demanded driving force assembly suspend should be carried out under the static state that preloads (being the component of power assembly gravity) after dynamic assembly suspension bears entrucking, for example, under the preloading prerequisite of dynamic assembly suspension Z-direction (vertical), detect the sound rigidity of its X to (longitudinally) and Y-direction (laterally).
In the test of traditional dynamic assembly suspension sound rigidity (being damping performance), because lacking corresponding diaxon or three-shaft linkage testing equipment and frock, often detecting X in, Y-direction performance, do not apply preloading in Z-direction, thereby make to detect the X that draws and have relatively large deviation to the rigidity situation under, Y-direction sound rigidity applying working condition actual with it, can not reflect really the damping performance of dynamic assembly suspension, bring very large inconvenience to exploitation and the design optimization of dynamic assembly suspension.
At present, the existing test tool of testing dynamic assembly suspension sound rigidity under preloaded condition of realizing is mainly: the preloading axle of dynamic assembly suspension test and start cylinder are for being articulated and connected.There is following shortcoming in this detection method: first because the preloading direction of dynamic assembly suspension and test direction are orthogonal each other both directions, and the motion of both direction is straight reciprocating motion, if jig Design is unreasonable, can moves and interfere and cause test to carry out.Secondly after preload force is applied on dynamic assembly suspension, bear by action shaft and sensor, make action shaft and sensor bear for a long time radial shear power, be easy to cause the loss of action shaft and sensor, thereby cause detecting data misalignment and device damage.Finally can not well eliminate prestress, have a strong impact on the accuracy that detects data.
Summary of the invention
Technical matters solved by the invention is to provide a kind of detection method of automobile power assembly suspending damping performance, exists movement interference and action shaft and sensor to bear for a long time radial shear power to cause device damage and the inaccurate problem of DATA REASONING to solve preloading direction that prior art medium power assembly suspends and test direction.
Technical matters solved by the invention realizes by the following technical solutions:
A detection method for automobile power assembly suspending damping performance, comprises and tests front prepare, apply preloading test and the detection of sound rigidity, employing can realize vibration table and the two-axle interlocking test tool of two-axle interlocking and realize.
Before test, prepare, first by base and the vibration table frame bolt rigid attachment of interlock frock, again the product that suspends is passed through to stationary fixture clamping on test tool, wherein suspend and need the direction of preload force value (being generally Z-direction) consistent with the direction of preloading mechanical axis, need the direction (X to or Y-direction) that detects consistent with action shaft direction.
Apply and preload test, first apply preload force by preloading mechanical axis, then by L-type plate, assembling panel, reinforcement and base, preload force is applied on equipment rack; Secondly, in test direction, by accurate straight ball-guide, L-type plate and stationary fixture, test force is applied on the product that suspends and is tested.Preloading load is applied on assembling panel by accurate straight ball-guide and the L-type plate of frock bottom, is applied in frame thereby make to preload, and makes the sensor on action shaft not bear preloading.
Sound rigidity detects, keep preloading mechanical axis motionless, now start action shaft, the up-down vibration of action shaft can be eliminated and the movement interference that preloads mechanical axis by the accurate straight ball-guide on panel by assembling, then detect suspend X to or the sound rigidity of Y-direction under Z-direction preloaded condition.
Above-mentioned apply preload test in preloading mode be power value or displacement.
By this two-axle interlocking test method; preload force is eliminated on equipment rack; protection action shaft and sensor are not damaged, and eliminate interference and the preload force of orthogonal straight lines motion by accurate straight ball-guide simultaneously, have ensured normally carrying out and the accuracy of test figure of test.
Compared with prior art, the present invention has the following advantages:
1, change traditional test method, realize in the situation that dynamic assembly suspension Z-direction is preloading, detect the sound rigidity of X to, Y-direction, guarantee to detect 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 test the preload force applying bearing dynamic assembly suspension by the support of equipment, ensure that action shaft and the sensor of equipment is not subject to shearing force, protection action shaft and sensor are not damaged.
4, eliminate prior art circular motion and produce angle and make preload force produce the problem of component, guarantee the accuracy of preload force, thus the accuracy of warranty test result.
Brief description of the drawings
Fig. 1 is the structural representation of vibration table.
Fig. 2 is the side structure schematic diagram of two-axle interlocking test tool.
Fig. 3 is the axle side structure schematic diagram of two-axle interlocking test tool.
Embodiment
In order to make technological means of the present invention, creation characteristic, workflow, using method reach object and effect is easy to understand, below further set forth the present invention.
A detection method for automobile power assembly suspending damping performance, realizes by vibration table and the two-axle interlocking test tool that can realize two-axle interlocking.
The described vibration table that can realize two-axle interlocking is standard device, and its structural representation is shown in Fig. 1.
As shown in Figure 2 and Figure 3, a kind of two-axle interlocking test tool that suspends, comprises frame 1, and frame 1 top is provided with by bolt can be at the base 2 of frame 1 enterprising line slip.Base 2 bottom hollows, to have enough spaces to vibration action shaft and sensor in frame 1, unlikely action shaft and sensor in the time of vibration and base 2 interfere.The side of base 2 upper surfaces is connected by screw the assembling panel 3 of vertical placement; The front of assembling panel 3 is provided with two groups of accurate straight ball-guides 5; Meanwhile, 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-type plate 8.By using L-type plate 8, can realize at mutually orthogonal both direction that load is orthogonal to be applied, eliminate the component that original circular motion produces, ensure to apply the accuracy of power value, can also realize the interlock of orthogonal straight lines motion and mutually do not interfere.
Wherein, L-type plate 8 is provided with stationary fixture 9, and stationary fixture 9 both sides are respectively equipped with two preloading mechanical axis 10.In practical application, the fixture of the applicable multiple fixing use of product that suspends of L-type plate 8, has extremely strong versatility.
The bottom surface of L-type plate 8 is all connected with the slide block of four groups of accurate straight ball-guides 5 by screw with sidewall.Use accurate straight ball-guide 5 to possess multiple benefit, as: front bearing load is large, and resistance to rolling is minimum, can under the effect of larger preload force, ensure minimum resistance to rolling; Can ensure to realize product and realize the motion of test direction preloading time, warranty test normally carries out; Can bear larger vertical and horizontal moment, good stability, ensures the stability in two-axle interlocking process of the test; Stroke, up to hundreds of millimeter, can meet the product sound rigidity stroke testing requirements of 30 millimeters at the most that suspends completely, thoroughly solves prior art stroke and can not meet the problem of testing requirements.
In addition, between two groups that assemble panel 3 fronts accurate straight ball-guides 5 and L-type plate 8, be provided with base plate 6.
Concrete, stationary fixture 9 is connected with the bottom surface of L-type plate 8 by screw, and wherein the bottom surface of L-type plate 8 is provided with the threaded hole mating with screw.
Two sides at assembling panel 3 back sides are equipped with a reinforcement 4.Further, the bottom of two reinforcements 4 is all connected with base 2; Wherein, on the position joining with assembling panel 3 and base 2 on two reinforcements 4, be equipped with threaded hole.
In addition, the front of assembling panel 3 is provided with threaded hole, and the front of assembling panel 3 is connected by the slide rail of threaded hole two groups of accurate straight ball-guides 5 corresponding with it with screw fit.
The back side of assembling panel 3 is provided with counter sink, and the back side of assembling panel 3 is connected by counter sink two reinforcements 4 corresponding with it with screw fit.
The bottom of assembling panel 3 is processed with threaded hole, and the bottom of assembling panel 3 is connected with base 2 by threaded hole, has ensured that annexation has very high rigidity and good verticality.
Above-mentioned base 2 is connected with the frame 1 of equipment, the preload force of process of the test can be eliminated in frame 1, and the action shaft of warranty test direction and sensor are not subject to 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 and tests front prepare, apply preloading test and the detection of sound rigidity.
Before test, prepare, first by the base 2 and vibration table frame 1 bolt rigid attachment of interlock frock, again the product that suspends is passed through to stationary fixture 9 clampings on test tool, wherein suspend and need the direction of preload force value (being generally Z-direction) consistent with the direction of preloading mechanical axis 10, need the direction (X to or Y-direction) that detects consistent with action shaft direction.
Apply and preload test, first apply preload force (preloading mode has two kinds: power value or displacement) by preloading mechanical axis 10, then by L-type plate 8, assembling panel 3, reinforcement 4 and base 2, preload force is applied on equipment rack 1; Secondly, in test direction, by accurate straight ball-guide 5, L-type plate 8 and stationary fixture 9, test force is applied on the product that suspends and is tested.Preloading load is applied on assembling panel 3 by accurate straight ball-guide 5 and the L-type plate 8 of frock bottom, is applied in frame 1 thereby make to preload, and makes the sensor on action shaft not bear preloading.
Sound rigidity detects, keep preloading mechanical axis 10 motionless, now start action shaft, the up-down vibration of action shaft can be by assembling the accurate straight ball-guide 5 on panel 3 eliminate and the movement interference of preloading mechanical axis 10, then detect suspend X to or the sound rigidity of Y-direction under Z-direction preloaded condition.
By 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 interference and the preload force of orthogonal straight lines motion by accurate straight ball-guide simultaneously, have ensured normally carrying out and the accuracy of test figure of test.
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 in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. a detection method for automobile power assembly suspending damping performance, comprises and tests front prepare, apply preloading test and the detection of sound rigidity; It is characterized in that: employing can realize vibration table and the two-axle interlocking test tool of two-axle interlocking and realize;
Before test, prepare, first by base and the vibration table frame bolt rigid attachment of interlock frock, again the product that suspends is passed through to stationary fixture clamping on test tool, wherein suspend need the direction of preload force value and the direction of preloading mechanical axis consistent, need detect direction consistent with action shaft direction;
Apply and preload test, first apply preload force by preloading mechanical axis, then by L-type plate, assembling panel, reinforcement and base, preload force is applied in vibration table frame; Secondly, in test direction, by accurate straight ball-guide, L-type plate and stationary fixture, test force is applied on the product that suspends and is tested;
Sound rigidity detects, keep preloading mechanical axis motionless, now start action shaft, the up-down vibration of action shaft can be eliminated and the movement interference that preloads mechanical axis by the accurate straight ball-guide on panel by assembling, then detect suspend X to or the sound rigidity of Y-direction under Z-direction preloaded condition.
2. the detection method of a kind of automobile power assembly suspending damping performance according to claim 1, is characterized in that: described in apply preload test in preloading mode be power value or displacement.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN102809491A CN102809491A (en) | 2012-12-05 |
| CN102809491B true CN102809491B (en) | 2014-09-17 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN106568604B (en) * | 2016-11-09 | 2019-01-29 | 华南理工大学 | A kind of calculation method of automobile power assembly suspension system vibration isolation rate |
| 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 |
| CN107631886B (en) * | 2017-08-23 | 2019-09-27 | 潍柴动力股份有限公司 | A kind of quiet, dynamic stiffness the test macro and test method of suspending cushion |
| CN108645581B (en) * | 2018-05-08 | 2020-02-14 | 西南交通大学 | Dynamic stiffness test experimental equipment |
| 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 |
| CN109596369B (en) * | 2018-12-28 | 2020-10-16 | 北汽福田汽车股份有限公司 | Suspension steering motion interference test bench and suspension steering motion interference test method |
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| CN101510233A (en) * | 2009-03-30 | 2009-08-19 | 上海众力汽车部件有限公司 | Method for optimizing automobile power assembly suspension system |
| CN201890128U (en) * | 2010-11-03 | 2011-07-06 | 北汽福田汽车股份有限公司 | Suspension system of power assembly |
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| KR100788311B1 (en) * | 2006-10-25 | 2007-12-27 | (주)디티알 | Powertrain mount for a motor vehicle |
| US20120090912A1 (en) * | 2010-10-14 | 2012-04-19 | Gm Global Technology Operations, Inc. | Mounting Systems for Transverse Front Wheel Drive Powertrains with Decoupled Pitch Damping |
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| US4518058A (en) * | 1981-12-21 | 1985-05-21 | Moog Automotive, Inc. | Engine torgue resisting strut and vibration damper |
| CN101510233A (en) * | 2009-03-30 | 2009-08-19 | 上海众力汽车部件有限公司 | Method for optimizing automobile power assembly suspension system |
| CN201890128U (en) * | 2010-11-03 | 2011-07-06 | 北汽福田汽车股份有限公司 | Suspension system of power assembly |
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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 |