CN105424529A - Two-degree freedom thermal fatigue test device used for metal bellows of vehicle exhaust system - Google Patents
Two-degree freedom thermal fatigue test device used for metal bellows of vehicle exhaust system Download PDFInfo
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- CN105424529A CN105424529A CN201510859025.1A CN201510859025A CN105424529A CN 105424529 A CN105424529 A CN 105424529A CN 201510859025 A CN201510859025 A CN 201510859025A CN 105424529 A CN105424529 A CN 105424529A
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- metal bellows
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- thermal fatigue
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Abstract
The invention discloses a two-degree freedom thermal fatigue test device used for a metal bellows of a vehicle exhaust system, belonging to the field of performance test of auto parts. The device comprises three parts: a driving part, a transmission part and a clamping part, wherein the driving part consists of two motors that are respectively used for controlling the radial movement and the axial movement of the metal bellows. While the device realizes independent radial/axial movement of the metal bellows, the combination of the radial movement and the axial movement of the metal bellows can be realized. The connection manner of the overall structure is described as follows: one end of the metal bellows is completely fixed by the clamping mechanism, and the other end of the metal bellows is fixed on a vibrating mechanism. The radial driving motor and the axial driving motor are fixed under a test bed; a coupler is used for driving an eccentric rotating mechanism to drive a sliding groove connecting rod to move along a polished rod, so as to realize the movement of the metal bellows.
Description
Technical field
The present invention relates to a kind of test unit for the test of automobile exhaust system metallic bellows two-freedom heat fatigue, more particularly, it relates to a kind of thermal fatigue test apparatus realizing the radial and axial independence of automobile metal corrugated tube and aggregate motion.
Background technology
Metallic bellows connects the cold and hot two ends of automobile exhaust system, the vibration and impact that exhaust system is subject to causing from engine, vehicle body and ground etc. or transmitting can be effectively reduced, the vibration of the exhaust system that reduction engine and exhaust system relative displacement cause and even car load, plays an important role in automobile exhaust system vibration damping, noise reduction.Automobile is the object moved under severe a, changeable environment and load, automobile exhaust system be in especially a high temperature, high humidity, strong vibration, have burn into impacted by air blast exceedingly odious environment in, metallic bellows, when this uses, also seems particularly important its serviceable life.
In vehicle traveling process, corrugated tube is subject to the impact of pavement behavior, engine luggine, automobile acceleration and deceleration etc., and its direction of vibration exists radial and axial independence and aggregate motion, and the frequency of vibration and amplitude are also changes.Mostly vibration frequency and the amplitude of existing corrugated tube thermal fatigue test mechanism are fixing, truly can not reflect the motion conditions of corrugated tube in car running process, if change corrugated tube motion amplitude to need to redesign cam or eccentric shaft mechanism, add design cost and test period.Therefore, in order to simulate the real vehicle motion conditions of corrugated tube, need to design a kind of thermal fatigue test mechanism that can change corrugated tube vibration frequency and amplitude easily.
Summary of the invention
For prior art Problems existing, the invention provides a kind of amplitude, frequency-adjustable, the test unit of automobile metal corrugated tube two-freedom heat fatigue test can be realized, real simulation corrugated tube real vehicle Vibration Condition.
For solving the problems of the technologies described above, the present invention adopts following organization plan to be achieved: a kind of test unit for the test of automobile metal corrugated tube two-freedom heat fatigue, this device mainly comprises three parts: drive part, running part and clamping part.Wherein, drive part is realized by two motors, by the motion of two radial and axial both directions of Electric Machine Control metallic bellows.This device, while realizing metallic bellows radial direction or axially-movable, can also realize the aggregate motion of radial and axial both direction.One-piece construction connects: one end clamp system (18) (19) (20) (22) of metallic bellows are completely fixed, and other end clamp system (14) (16) are fixed on vibrating mechanism.Drive motor (2) (4) are fixed on below testing table,
Drive eccentric rotary mechanism (7) and (28) by shaft coupling, wherein, eccentric rotary mechanism (7) drives sliding
Groove connecting rod (12) (15), support (13), clamp system (14) (16) do lengthwise movement under the constraint of polished rod (11) (24), realize the axially-movable of metallic bellows tache motorice, eccentric rotary mechanism (28) drives chute connecting rod (26) polish rod support (10) (11) (24) to do transverse movement under the constraint of sliding support (5) (9), realizes the radial motion of metallic bellows (13) tache motorice.
The invention has the beneficial effects as follows:
This device, while realizing metallic bellows radial direction or axially-movable, can also realize the aggregate motion of both direction.The present invention, by regulating the position of support, realizes the thermal fatigue test to different size corrugated tube.The present invention is by controlling the rotating speed of motor, adjustable corrugated tube vibration frequency range 0 ~ 20Hz, and the present invention is by regulating the centre distance of crank circle pin and crankwheel, adjustable movement amplitude range 0 ~ 30mm.
Accompanying drawing explanation
Fig. 1 is positive two survey views of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 is stiff end clamp system schematic diagram of the present invention.
Fig. 4 is vibrating device structural representation of the present invention.
Embodiment
Three parts are mainly comprised: drive part, running part and clamping part in device of the present invention.Wherein, drive part is realized by two motors, by the motion of two radial and axial both directions of Electric Machine Control metallic bellows.This device, while realizing metallic bellows radial direction or axial self-movement, can also realize the aggregate motion of the radial and axial both direction of corrugated tube.
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1, the one-piece construction of this device connects: stiff end clamp system (18) (19) (20) (22) of metallic bellows are completely fixed, and tache motorice clamp system (14) (16) are fixed on vibrating mechanism.Drive motor (2) (4) are fixed on below testing table (3), eccentric rotary mechanism (7) and (28) are driven respectively by shaft coupling (1) (6), wherein, eccentric rotary mechanism (7) drives chute connecting rod (12) (15), support (13), clamp system (14) (16) do lengthwise movement under the constraint of polished rod (11) (24), realize the axially-movable of metallic bellows tache motorice, eccentric rotary mechanism (28) drives chute connecting rod (26) polish rod support (10) (11) (24) to do transverse movement under the constraint of sliding support (5) (9), realize the radial motion of metallic bellows (13) tache motorice.
Described clamp system adopts V-block fixture, automatically can carry out centralized positioning when installing corrugated tube, corrugated tube installed more reliable and more stable.
Described drive part is realized by two drive motor, by controlling the rotating speed of drive motor, realizes the change to corrugated tube tache motorice vibration frequency.
Described eccentric rotary mechanism is the crankwheel that straight pin is housed, wherein crankwheel (7) (28) are provided with T-slot, straight pin (8) (27) are fixed in the T-slot of crankwheel (7) (28) with flange nut, by regulating crank circle pin (8) (27) and the centre distance of crankwheel (7) (28), realize the change to corrugated tube tache motorice axis and amplitude of radial vibration.
Consult Fig. 2 and Fig. 3, the support (21) of corrugated tube stiff end is fixed on testing table 3 with fastening bolt, and wherein testing table (3) is provided with T-slot, and the position of described support (21) can along testing table (3)
T-slot left and right adjusting, be convenient to regulate corrugated tube install time right position.Support (23) fastening bolt is fixed on support (21), its medium-height trestle (21) is provided with rectangular channel, the position of described support (23) can along the rectangular channel up-down adjustment on support (21), be convenient to the upper-lower position regulating corrugated tube, described support (23) is L-type, and is provided with rectangular channel.V-block (22) fastening bolt is fixed on support (23), and its medium-height trestle (23) is provided with rectangular channel, and the position of V-block (22) can regulate before and after the rectangular channel on support (23), realizes the thermal fatigue test to different length corrugated tube.
Consult Fig. 4, polished rod (10) (11) (24) (25) are fixedly connected with chute connecting rod (26), and composition transverse movement support, crank circle pin moves in the chute of chute connecting rod (26), realizes the transverse movement of metallic bellows.Chute connecting rod (12) (15) are enclosed within polished rod (11) (24), and can do lengthwise movement along polished rod, and crank circle pin moves in the chute of chute connecting rod (12), realizes the lengthwise movement of metallic bellows.
Claims (4)
1. the two-freedom thermal fatigue test apparatus for automobile exhaust system metallic bellows, this mechanism mainly comprises three parts: drive part, gear train and clamp system, it is characterized in that: drive motor (2) promotes support (10) (11) (25) (26) transverse movement by crank circle pin (27), drive motor (4) promotes support (12) (13) (15) lengthwise movement by crank circle pin (8), this mechanism while realizing metallic bellows radial direction or axially-movable, can also realize the aggregate motion of both direction.
2. according to two-freedom thermal fatigue test mechanism according to claim 1, it is characterized in that: the position of support (21) can along the T-slot left and right adjusting of testing table (3), the position of support (23) can along the rectangular channel up-down adjustment on support (21), the position of clamp system (18) (19) (20) (22) can regulate before and after the rectangular channel on support (23), realizes the thermal fatigue test to different size corrugated tube.
3. according to two-freedom thermal fatigue test mechanism according to claim 1, it is characterized in that: drive part is realized by two drive motor, by controlling the rotating speed of drive motor, realizing the adjustment to corrugated tube tache motorice vibration frequency.
4. it is characterized in that according to two-freedom thermal fatigue test mechanism according to claim 1: by regulating crank circle pin (8) (27) and the centre distance of crankwheel (7) (28), realize the adjustment of corrugated tube tache motorice axis and amplitude of radial vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510859025.1A CN105424529A (en) | 2015-12-01 | 2015-12-01 | Two-degree freedom thermal fatigue test device used for metal bellows of vehicle exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510859025.1A CN105424529A (en) | 2015-12-01 | 2015-12-01 | Two-degree freedom thermal fatigue test device used for metal bellows of vehicle exhaust system |
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| CN105424529A true CN105424529A (en) | 2016-03-23 |
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| CN201510859025.1A Pending CN105424529A (en) | 2015-12-01 | 2015-12-01 | Two-degree freedom thermal fatigue test device used for metal bellows of vehicle exhaust system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768931A (en) * | 2016-12-02 | 2017-05-31 | 长春越洋汽车零部件有限公司 | The hot fatigue tester of bellows multiaxis |
| CN107273594A (en) * | 2017-06-08 | 2017-10-20 | 长春工业大学 | Automobile exhaust system metal bellows deformation parameter Dynamic Tracking based on EMD DNMPSO |
| CN111879639A (en) * | 2020-08-07 | 2020-11-03 | 长春工业大学 | Fatigue testing machine for metal corrugated pipe of automobile exhaust system |
| CN112082745A (en) * | 2020-08-28 | 2020-12-15 | 西南石油大学 | Multi-axis variable frequency fatigue test device suitable for manifold type pipe fitting |
| CN112198047A (en) * | 2020-09-29 | 2021-01-08 | 湖北中精衡建筑检测技术有限责任公司 | Metal corrugated pipe radial rigidity detection reducing clamping device |
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| JPS5728238A (en) * | 1980-07-28 | 1982-02-15 | Tokyo Koki Seizosho:Kk | High temperature fatigue testing apparatus for bellows |
| JPS5992329A (en) * | 1982-11-19 | 1984-05-28 | Hitachi Ltd | Bellows fatigue testing machine |
| CN201083618Y (en) * | 2007-10-12 | 2008-07-09 | 沈阳仪表科学研究院 | Metal corrugated pipe swinging test device |
| CN201917497U (en) * | 2010-12-19 | 2011-08-03 | 长春汇凯科技有限公司 | Swing fatigue testing machine |
| CN102156030A (en) * | 2011-01-20 | 2011-08-17 | 航天晨光股份有限公司 | External-pressure fatigue test equipment for corrugated pipe |
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2015
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Patent Citations (5)
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| JPS5728238A (en) * | 1980-07-28 | 1982-02-15 | Tokyo Koki Seizosho:Kk | High temperature fatigue testing apparatus for bellows |
| JPS5992329A (en) * | 1982-11-19 | 1984-05-28 | Hitachi Ltd | Bellows fatigue testing machine |
| CN201083618Y (en) * | 2007-10-12 | 2008-07-09 | 沈阳仪表科学研究院 | Metal corrugated pipe swinging test device |
| CN201917497U (en) * | 2010-12-19 | 2011-08-03 | 长春汇凯科技有限公司 | Swing fatigue testing machine |
| CN102156030A (en) * | 2011-01-20 | 2011-08-17 | 航天晨光股份有限公司 | External-pressure fatigue test equipment for corrugated pipe |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768931A (en) * | 2016-12-02 | 2017-05-31 | 长春越洋汽车零部件有限公司 | The hot fatigue tester of bellows multiaxis |
| CN106768931B (en) * | 2016-12-02 | 2023-04-07 | 长春越洋汽车零部件有限公司 | Multi-shaft thermal state fatigue testing machine for corrugated pipe |
| CN107273594A (en) * | 2017-06-08 | 2017-10-20 | 长春工业大学 | Automobile exhaust system metal bellows deformation parameter Dynamic Tracking based on EMD DNMPSO |
| CN107273594B (en) * | 2017-06-08 | 2020-12-15 | 长春工业大学 | EMD-DNMPSO-based dynamic variable parameter tracking method for metal bellows of automobile exhaust system |
| CN111879639A (en) * | 2020-08-07 | 2020-11-03 | 长春工业大学 | Fatigue testing machine for metal corrugated pipe of automobile exhaust system |
| CN112082745A (en) * | 2020-08-28 | 2020-12-15 | 西南石油大学 | Multi-axis variable frequency fatigue test device suitable for manifold type pipe fitting |
| CN112082745B (en) * | 2020-08-28 | 2022-07-22 | 西南石油大学 | Multi-axis variable frequency fatigue test device suitable for manifold type pipe fitting |
| CN112198047A (en) * | 2020-09-29 | 2021-01-08 | 湖北中精衡建筑检测技术有限责任公司 | Metal corrugated pipe radial rigidity detection reducing clamping device |
| CN112198047B (en) * | 2020-09-29 | 2022-05-10 | 湖北中精衡建筑检测技术有限责任公司 | Radial rigidity detection reducing clamping device for metal corrugated pipe |
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