CN105387922A - Device and method for testing vibration absorber frequency - Google Patents
Device and method for testing vibration absorber frequency Download PDFInfo
- Publication number
- CN105387922A CN105387922A CN201510675166.8A CN201510675166A CN105387922A CN 105387922 A CN105387922 A CN 105387922A CN 201510675166 A CN201510675166 A CN 201510675166A CN 105387922 A CN105387922 A CN 105387922A
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- China
- Prior art keywords
- bump leveller
- test
- data acquisition
- described base
- frequency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
- G01H1/14—Frequency
Abstract
The invention relates to a device for testing a vibration absorber frequency. The device comprises a data acquisition front-end, a hammer, an acceleration sensor and a vibration absorber fixing device. The device is characterized in that the vibration absorber fixing device comprises floor and a base; ththe base is L-shaped; the horizontal part of the base is fixed on the floor; and the vibration absorber is fixed on the vertical part of the base. The device can test the vibration absorber frequency, thereby facilitating unification of testing and acceptance of a vibration absorber by an automotive original equipment manufacturer and a supplier. The invention further provides a method for testing the vibration absorber frequency.
Description
Technical field
The invention belongs to auto NVH performances areas, be specially a kind of device and method testing bump leveller frequency.
Background technology
What require car comfort along with the fast development of automobile industry and user improves constantly, and auto NVH control technology seems more and more important.In auto NVH Properties Control, bump leveller is often used to the energy of absorption system, the vibration of control system.
Bump leveller is a kind of spring mass system, and bump leveller is mainly used in the resonance that in decay car running process, parts or system produce, and can effectively improve by the NVH problem caused that resonates.As shown in Figure 2, bump leveller 8 is comprised mounting bracket 12 and is connected to the mass 10 on mounting bracket by vulcanized rubber 11, described mounting bracket 12 is provided with two bolts hole 13, for bump leveller is installed on automobile by bolt.
The method of testing of current bump leveller frequency comprises engine bench test, the bonding test of real steering vectors and ground etc., and automobile main frame maker and supplier are to the ununified proving installation of monomer bump leveller, detection method is also different, and the stand rigidity used due to part supplier is more weak, larger with main engine plants difference, cause both sides' test result to unify, be unfavorable for project development, reduce work efficiency.Therefore, be necessary to provide a kind of device and method for detecting bump leveller frequency, for unified main engine plants and supplier to the test of bump leveller and examination.
Summary of the invention
The object of the present invention is to provide a kind of device testing bump leveller frequency, it can be tested bump leveller frequency, is convenient to unified automobile main frame maker and supplier to the test of bump leveller and examination.
The device of test bump leveller frequency of the present invention, comprise data acquisition front, power is hammered into shape, acceleration transducer and bump leveller stationary installation, described bump leveller stationary installation comprises base, described base is L-shaped, its horizontal part and base fixed part are fixed, its vertical portion is provided with two the first vertical bar holes, spacing between described two the first bar holes is equal with the spacing between two bolts hole on the mounting bracket of tested bump leveller, bump leveller is fixed on the vertical portion of described base through two bolts hole on described two the first bar holes and bump leveller mounting bracket by the first bolt.
Further, described base fixed part is floor, floor is provided with the dovetail groove that twice are parallel, the horizontal part of described base is provided with the bar hole corresponding with described twice dovetail groove, is placed in described dovetail groove, the screw rod of the second bolt is through described bar hole thus be fixed on described floor by described base with the head of the second bolt.
Further, described base is provided with by the reinforcement extended in the middle of its horizontal part in the middle of its vertical portion.
Further, the second bar hole is also respectively equipped with outside two, vertical portion, first bar hole of described base.
The present invention also provides the method for test bump leveller frequency, adopts the method for said apparatus test bump leveller frequency, comprises the following steps:
A) test prepares: be fixed on by bump leveller in described bump leveller stationary installation, and arrange acceleration transducer on the mass of bump leveller, degree of will speed up sensor is connected to described data acquisition front; With connecting line, power hammer is connected with data acquisition front;
B) test: use described power to hammer the mass of the described bump leveller of excitation into shape, force signal is transferred to data acquisition front by power hammer, and acceleration transducer degree of the will speed up response signal on mass also transfers to data acquisition front;
C) data processing: data acquisition front, by acceleration responsive signal and force signal, calculates bump leveller frequency.
The present invention has the following advantages: adopt described device to test bump leveller frequency, supplier and main engine plants can be unified to the proving installation of bump leveller and method, described device is used for main engine plants, can detect bump leveller frequency, be conducive to the accurate enforcement of auto NVH technical scheme, described device is used for bump leveller supplier, the production situation up to standard of bump leveller can be detected, thus improve the qualification rate of product, because bump leveller homogeneity of product causes later stage vehicle to be correlated with NVH problem after described device can prevent launch.In addition, the first bar hole that two of being provided with in the base vertical portion due to described bump leveller stationary installation are vertical, makes the in the vertical direction when fixing bump leveller have adjustability, can be fixed the bump leveller of different in width to test; Meanwhile, the second bar hole that two of being provided with in the base vertical portion of described bump leveller stationary installation are vertical, the bump leveller that can adapt to more long size is installed.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention
Fig. 2 is the schematic diagram of bump leveller.
Fig. 3 is use schematic diagram of the present invention.
Fig. 4 is bump leveller test frequency response curve.
In figure, 1-floor, 2-second bolt, 3-dovetail groove, 4-base, 5-reinforcement, 6-first bolt, 7-first bar hole, 8-bump leveller, 9-power hammer, 10-mass, 11-vulcanized rubber, 12-mounting bracket, 13-bolt hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
The device of test bump leveller frequency of the present invention, comprise data acquisition front, power hammer 9, acceleration transducer and bump leveller stationary installation, as shown in Figure 1, described bump leveller stationary installation comprises floor 1 and base 4, described base is L-shaped, its horizontal part and described floor are fixed, its vertical portion is provided with two the first vertical bar holes 7, spacing between described two the first bar holes is equal with the spacing between two bolts hole 13 on the mounting bracket of tested bump leveller, bump leveller is fixed on the vertical portion of described base through two bolts hole 13 on described two the first bar holes 7 and bump leveller mounting bracket 12 by the first bolt 6.The first bar hole that two of being provided with in described base vertical portion are vertical, makes the in the vertical direction when fixing bump leveller have adjustability, can be fixed to test the bump leveller of different in width.
Described floor 1 is provided with the parallel dovetail groove of twice 3, the horizontal part of described base 4 is provided with the bar hole corresponding with described twice dovetail groove, is placed in described dovetail groove, the screw rod of the second bolt 2 is through described bar hole thus be fixed on described floor 1 by described base with the head of the second bolt 2.
Described base 4 is provided with by the reinforcement 5 extended in the middle of its horizontal part in the middle of its vertical portion, its object is to the rigidity improving base.
Also be respectively equipped with the second bar hole outside two, vertical portion, first bar hole of described base 4, make in the horizontal direction there is adjustability when fixing bump leveller, can be fixed to test the bump leveller of different length.
Adopt the method for said apparatus test bump leveller frequency, comprise the following steps:
A) test prepares: be fixed in described bump leveller stationary installation by bump leveller 8, and arrange acceleration transducer on the mass 10 of bump leveller, degree of will speed up sensor is connected to described data acquisition front; With connecting line, power hammer is connected with data acquisition front (see Fig. 3).
B) test: use described power to hammer the mass 10 of the described bump leveller of 9 excitation into shape, force signal is transferred to data acquisition front by power hammer, and acceleration transducer degree of the will speed up response signal on mass also transfers to data acquisition front.
C) data processing: data acquisition front, by acceleration responsive signal and force signal, calculates bump leveller frequency.As shown in Figure 4, the frequency that in figure, peak value place is corresponding is bump leveller frequency to corresponding frequency response curve.
Claims (6)
1. test the device of bump leveller frequency for one kind, comprise data acquisition front, power is hammered into shape, acceleration transducer and bump leveller stationary installation, it is characterized in that: described bump leveller stationary installation comprises base (4), described base is L-shaped, its horizontal part and base fixed part are fixed, its vertical portion is provided with two vertical the first bar holes (7), spacing between described two the first bar holes is equal with the spacing between two bolts hole (13) on the mounting bracket of tested bump leveller, bump leveller is fixed on the vertical portion of described base through two bolts hole (13) on described two the first bar holes and bump leveller mounting bracket by the first bolt (6).
2. a kind of device testing bump leveller frequency according to claim 1, it is characterized in that: described base fixed part is provided with the parallel dovetail groove of twice (3), the horizontal part of described base is provided with the bar hole corresponding with described twice dovetail groove, is placed in described dovetail groove, the screw rod of the second bolt is through described bar hole thus be fixed on described base fixed part by described base with the head of the second bolt (2).
3. a kind of device testing bump leveller frequency according to claim 1, is characterized in that: described base fixed part is floor (1).
4. the device of the test bump leveller frequency according to claim 1,2 or 3, is characterized in that: described base (4) is provided with by the reinforcement (5) extended in the middle of its horizontal part in the middle of its vertical portion.
5. a kind of device testing bump leveller frequency according to claim 1,2 or 3, is characterized in that: be also respectively equipped with the second bar hole outside two, vertical portion, first bar hole of described base (4).
6. test a method for bump leveller frequency, adopt the device of the test bump leveller frequency as described in any one of Claims 1-4, comprise the following steps:
A) test prepares: be fixed on by bump leveller in described bump leveller stationary installation, and arrange acceleration transducer on the mass of bump leveller, degree of will speed up sensor is connected to described data acquisition front; With connecting line, power hammer is connected with data acquisition front;
B) test: use described power to hammer the mass of the described bump leveller of excitation into shape, force signal is transferred to data acquisition front by power hammer, and acceleration transducer degree of the will speed up response signal on mass also transfers to data acquisition front;
C) data processing: data acquisition front, by acceleration responsive signal and force signal, calculates bump leveller frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675166.8A CN105387922B (en) | 2015-10-19 | 2015-10-19 | A kind of device and method for testing bump leveller frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675166.8A CN105387922B (en) | 2015-10-19 | 2015-10-19 | A kind of device and method for testing bump leveller frequency |
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| Publication Number | Publication Date |
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| CN105387922A true CN105387922A (en) | 2016-03-09 |
| CN105387922B CN105387922B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510675166.8A Active CN105387922B (en) | 2015-10-19 | 2015-10-19 | A kind of device and method for testing bump leveller frequency |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323651A (en) * | 2016-07-28 | 2017-01-11 | 重庆长安汽车股份有限公司 | Adjustable dynamic vibration absorber inherent frequency test bench |
| CN109396484A (en) * | 2017-08-17 | 2019-03-01 | 南京雄豹精密机械有限公司 | Sliding block installs hole processing device |
| CN109738210A (en) * | 2019-03-15 | 2019-05-10 | 浙江众泰汽车制造有限公司 | A kind of automobile driving axle dynamic vibration absorber performance testing device and its test method |
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| US20030062230A1 (en) * | 2001-09-28 | 2003-04-03 | Tokai Rubber Industries, Ltd. | Vibration damping device |
| CN101699098A (en) * | 2009-10-30 | 2010-04-28 | 奇瑞汽车股份有限公司 | Steering system dynamic vibration absorber and design method thereof |
| CN102121506A (en) * | 2011-03-28 | 2011-07-13 | 重庆长安汽车股份有限公司 | Vibration absorber with adjustable frequency installed on suspended support of automobile |
| CN102721550A (en) * | 2012-07-12 | 2012-10-10 | 湖南师范大学 | Test device of automobile magnetorheological suspension system |
| CN103175644A (en) * | 2013-03-07 | 2013-06-26 | 上海交通大学 | Friction force measuring device of ball screws with variable loads and measuring method of friction force measuring device |
| CN203161947U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Frequency-adjustable dynamic vibration absorber |
| CN103994929A (en) * | 2014-06-18 | 2014-08-20 | 哈尔滨工业大学 | Mechanical property testing device and method for testing mechanical property of micro-component by device |
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2015
- 2015-10-19 CN CN201510675166.8A patent/CN105387922B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030062230A1 (en) * | 2001-09-28 | 2003-04-03 | Tokai Rubber Industries, Ltd. | Vibration damping device |
| CN101699098A (en) * | 2009-10-30 | 2010-04-28 | 奇瑞汽车股份有限公司 | Steering system dynamic vibration absorber and design method thereof |
| CN102121506A (en) * | 2011-03-28 | 2011-07-13 | 重庆长安汽车股份有限公司 | Vibration absorber with adjustable frequency installed on suspended support of automobile |
| CN102721550A (en) * | 2012-07-12 | 2012-10-10 | 湖南师范大学 | Test device of automobile magnetorheological suspension system |
| CN103175644A (en) * | 2013-03-07 | 2013-06-26 | 上海交通大学 | Friction force measuring device of ball screws with variable loads and measuring method of friction force measuring device |
| CN203161947U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Frequency-adjustable dynamic vibration absorber |
| CN103994929A (en) * | 2014-06-18 | 2014-08-20 | 哈尔滨工业大学 | Mechanical property testing device and method for testing mechanical property of micro-component by device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323651A (en) * | 2016-07-28 | 2017-01-11 | 重庆长安汽车股份有限公司 | Adjustable dynamic vibration absorber inherent frequency test bench |
| CN109396484A (en) * | 2017-08-17 | 2019-03-01 | 南京雄豹精密机械有限公司 | Sliding block installs hole processing device |
| CN109738210A (en) * | 2019-03-15 | 2019-05-10 | 浙江众泰汽车制造有限公司 | A kind of automobile driving axle dynamic vibration absorber performance testing device and its test method |
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| Publication number | Publication date |
|---|---|
| CN105387922B (en) | 2019-04-09 |
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