CN208109676U - A kind of bonded joint fatigue property test device in vehicle service temperature section - Google Patents
A kind of bonded joint fatigue property test device in vehicle service temperature section Download PDFInfo
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- CN208109676U CN208109676U CN201820667512.7U CN201820667512U CN208109676U CN 208109676 U CN208109676 U CN 208109676U CN 201820667512 U CN201820667512 U CN 201820667512U CN 208109676 U CN208109676 U CN 208109676U
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- bonded joint
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Abstract
The utility model discloses the bonded joint fatigue property test devices in a kind of vehicle service temperature section, including：Fixed plate；Multiple first connectors, connect with fixed plate；Multiple bonded joints, the upper end and the first connector are hinged；Multiple second connectors, it is hinged with the lower end of bonded joint；Multiple first load levers, center two sides are symmetrical arranged multiple loading hole, and hinged by loading hole and the second connector；Third connector, it is hinged with the center of the first load lever；Multiple second load levers, both ends are hinged with third connector respectively；4th connector, it is hinged with the center of the second load lever；Third loads lever, and both ends are hinged with the 4th connector respectively；First tension sensor, the upper end are mounted on the output shaft end of oil cylinder；Lower end is fixedly connected with load bar, and load bar lower end and the center of third load lever are hinged.Bonded joint fatigue property test device provided by the utility model, can adjust bonded joint load proportion.
Description
Technical field
The utility model belongs to bonded joint fatigue property test technical field, in particular to a kind of vehicle service temperature area
Interior composite material bonded joint fatigue property test device.
Background technique
Realize that body lightening is to solve energy consumption and environment brought by automobile industry development by using new material
Maximally efficient one of the solution route of pollution problem.Composite material (carbon fiber, basalt fibre, glass fiber reinforcement in recent years
Composite material) on automobile application it is gradually extensive.In view of the requirement of vehicle body complexity performance and cost control, multiple material is realized
Be used in mixed way be future development inexorable trend.However the interconnection technique between different materials is increasingly becoming restriction new material and answers
Critical issue.It is bonded as a kind of novel structure interconnection technique, can be realized the company between labyrinth, dissimilar material
It connects, while bonded structure has the characteristics that loaded area is big, stress distribution is uniform, excelling in fatigue property, connects in new material vehicle body
By increasingly extensive application in connecing.
Automobile is will receive in the process of moving from various dynamic alternate load effects, and vehicle body bonded structure is caused to exist
It is easy to that fatigue rupture occurs during long service, to seriously affect vehicle safety.Vehicle is in actual motion mistake simultaneously
Cheng Zhong, effect of the vehicle body bonded structure toward contact by factors such as temperature, humidity, salt fog and ultraviolet lights, varying environment factor pair
There are large effects for bonded joint performance.In view of that can use the means such as sealant and coating that humidity, salt fog is effectively reduced
With the influence of ultraviolet light, therefore, temperature becomes the main factor for influencing bonded structure performance.In composite material bonded joint
In, bonding agent and composite substrate are high molecular material, have temperature sensitivity, at different temperatures its quiet, dynamic
It can change, especially when temperature is close to material glass conversion temperature TgWhen, variation becomes apparent.Therefore, to bonded joint
Fatigue behaviour in vehicle service temperature section carries out test and has a very important significance.
Existing fatigue loading device and test method do not fully consider the influence of temperature mainly for normal temperature condition.
Existing apparatus is typically only capable to load single test specimen simultaneously, and existing testing method of endurance performance can not achieve certain temperature
Spend the cycle-index prediction in range under specific stress amplitude.
Chinese Patent Application No.：201710191457.9 disclosing a kind of multispecimen bonded joint moisture and hot ageing and alternating download
Lotus Coupled Dynamic experimental rig can be realized dynamic under multispecimen different temperatures, damp condition by using multi-grade lever structure
State load test.During fatigue property test, in order to make stress amplitude-fatigue life cycle (S-N) curve obtained more
It is accurate to add, and generally requires to be tested under the stress amplitude of multiple levels.And when the device being used to carry out testing fatigue, same to batch
7 loaded magnitudes of load of test specimen are consistent, inevitably cause test period too long, Expenses Cost is huge.When there is connector hair
When raw fatigue fracture, existing apparatus does not shut down measure effectively, is easy to cause overall structure unstability, other test specimens are in abnormal load
Continue test under lotus or be broken due to bearing load increase, influences the validity of test efficiency and test result.
Utility model content
The purpose of this utility model is the load applied for existing bonded joint fatigue property test device to each test specimen
Lotus is in the same size, leads to the technological deficiency that test period is too long, and loading position can be changed by providing one kind, and bonding is adjusted flexibly
The fatigue property test device of joint load ratio can carry out tired examination to the bonded joint of different stress levels simultaneously
It tests, to effectively improve bonded joint experiment on fatigue properties efficiency.
Technical solution provided by the utility model is：
A kind of bonded joint fatigue property test device in vehicle service temperature section, including：
Oil cylinder is fixedly installed in environmental cabinet, top；
First tension sensor is detachably arranged in the output shaft end of the oil cylinder；
Fixed plate is fixedly mounted in the environmental cabinet inner top；
Multiple first connectors, the upper end are connect with the fixed plate；
Multiple bonded joints, the upper end and the lower end of first connector are hinged；
Multiple second connectors, the upper end and the lower end of the bonded joint are hinged；
Multiple first load levers, are symmetrical arranged multiple loading hole along center two sides, and pass through the loading hole and institute
The lower end for stating the second connector is hinged；
Wherein, second connector is respectively set in the center two sides of the first load lever；
Multiple third connectors, the upper end and the center of the first load lever are hinged；
Multiple second load levers, both ends are hinged with the lower end of the third connector respectively；
Multiple 4th connectors, the upper end and the center of the second load lever are hinged；
Third loads lever, and both ends are hinged with the lower end of the 4th connector respectively；
Load bar, the upper end are fixedly connected with first tension sensor, in lower end and third load lever
The heart is hinged.
Preferably, the bonded joint fatigue property test device in vehicle service temperature section further includes：
Multiple second tension sensors, the upper end are detachably arranged on the lower surface of the fixed plate, lower end and institute
The upper end for stating the first connector is fixedly connected.
Preferably, the bonded joint is 8.
Preferably, the first tension sensor range is at least 8 times of the second tension sensor range.
Preferably, the connector is U-shaped connector.
Preferably, the lower end of the tension sensor is at least 200mm at a distance from the environment roof box.
Preferably, 3 loading hole are at least respectively set in first load lever central two sides.
Preferably, the loading hole of first load lever central two sides is to be equally spaced.
The utility model has the beneficial effects that：
1, the composite material bonded joint experiment on fatigue properties dress in vehicle service temperature provided by the utility model section
It sets, compared with existing fatigue experimental device, the joint fatigue performance under room temperature can not only be tested, and be able to carry out certain model
The fatigue test under interior specific temperature conditions is enclosed, to provide base for the testing method of endurance performance established in service temperature section
Plinth.
2, using lever-loading principle, test device provided by the utility model can simultaneously be carried out multiple bonded joints
Fatigue test, and by changing loading position, joint load ratio can be adjusted flexibly, realize equal proportion load or not year-on-year
Example load, while fatigue test is carried out to the connector of different stress levels, to effectively improve the examination of bonded joint fatigue behaviour
Efficiency is tested, cost consumption is reduced.
Detailed description of the invention
Fig. 1 is the bonded joint fatigue property test device signal in vehicle service temperature described in the utility model section
Figure.
Fig. 2 is bonded joint connection schematic diagram described in the utility model.
Fig. 3 is the first load lever schematic diagram described in the utility model.
Fig. 4 is fixed plate schematic diagram described in the utility model.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
The utility model provides the bonded joint fatigue property test device in a kind of vehicle service temperature section, mainly
It is made of loading device and hygrothermal environment case.
As shown in Figs 1-4, loading device mainly by oil cylinder 110, upper backup pad 120, support column 130, lower supporting plate 140,
Fixed plate 160, the second tension sensor 180, load bar 190, the first connector 210, connects first tension sensor 170
First 220, second connector 230, first loads lever 240, third connector 250, second loads lever 260, the 4th connector
270, third loads lever 280, the 5th connector 290.Wherein, first connector 210, the second connector 230, third connect
Fitting 250, the 4th connector 270, the 5th connector 290 are U-shaped connector.
Fixed plate 160 is arranged in 150 inner top of hygrothermal environment case；Upper backup pad 120, lower supporting plate
140, fixed plate 160 is connected by four support columns 130, and oil cylinder 110 is fixedly mounted on upper backup pad 120.It is set in fixed plate 160
There are multiple bolts hole, the upper end of the second tension sensor 180 is detachably arranged in the following table of the fixed plate 160 by screw thread
On face, 180 lower end of the second tension sensor is threadably secured with the upper end of first connector 210 and connect.Bonded joint
220, the upper end is connect by pin shaft with the lower end of first connector 210；Second connector 230, the upper end are glued with described
The lower end of connector 220 is hinged；First load lever 240, center two sides are symmetrical arranged multiple loading hole 241, and two sides add
It carries hole 241 to be equally spaced, and is connect with the lower end of second connector 230 using pin shaft by the loading hole 241.Third
Connector 250, the upper end are connect with the center of the first load lever 240 by pin shaft；Second load lever 260, two
End is connect with the lower end of the third connector 250 by pin shaft respectively.4th connector 270, the upper end add with described second
The center for carrying lever 260 is connected by pin shaft；Third loads lever 280, and both ends are respectively and under the 4th connector 270
End is connected by pin shaft.First tension sensor 170, the upper end is with the output shaft end of the oil cylinder 110 by being fixedly connected；The
The lower end of one tension sensor 170 and the upper end of load bar 190 are connected through a screw thread, and the lower end of load bar 190 is connect with the 5th
The upper end of part 290 is threadably secured connection, and the center that the lower end of the 5th connector 290 and third load lever 280 passes through pin
Axis connection.
Wherein, the two sides at the center of the first load lever 240 are hinged with second connector 230 respectively, i.e., and the
One load 240 left and right sides of lever respectively loads a bonded joint 220, for test load requirement, can be connect by changing
First 220 loading position realizes different load distributions, and load ratio is adjusted flexibly.In fixed plate 160 with loading hole 241
Corresponding position is provided with threaded hole, for changing the position of the second tension sensor of power 180.First load lever 240 and fixed plate
160, it is as shown in Figure 3, Figure 4 respectively.In order to effectively increase the adjustable range of load, on the basis of guaranteeing certain operating space,
Unilateral loading position should be not less than 3.In the present embodiment, bonded joint 220 is 8 altogether, and it is 15mm that center, which connects bore dia,
Load bore dia be 10mm, left and right sides loading hole each 3.
Dynamic load caused by oil cylinder 110, via the first tension sensor 170, load bar 190 and the 5th connector
290, third load lever 280, the 4th connector 270, second load lever 260, third connector 250 are transferred to the first load
Lever 240, and it is ultimately applied to bonded joint 220.
Wherein, the second tension sensor 180 for realizing joint breaking when shut down.During test experiments, work as discovery
Twice in fatigue and cyclic, the difference absolute value of the maximum load collected of the second tension sensor 180 is more than 100N for front and back, then stops
Test is shut down when joint breaking to effectively realize；First tension sensor 170 is used to monitor the real-time load loaded,
First tension sensor, 170 range is 8 times or more of 180 range of the second tension sensor.First pull sensing in order to prevent
Device 170 occurs zero and floats due to the influence of temperature in environmental cabinet 150, influences measurement accuracy, should ensure that the first tension sensor 170
Lower surface is apart from 150 upper surface of environmental cabinet at least 200mm.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (7)
1. the bonded joint fatigue property test device in a kind of vehicle service temperature section, which is characterized in that including：
Oil cylinder is fixedly installed in environmental cabinet, top；
First tension sensor is detachably arranged in the output shaft end of the oil cylinder；
Fixed plate is fixedly mounted in the environmental cabinet inner top；
Multiple first connectors, the upper end are connect with the fixed plate；
Multiple bonded joints, the upper end and the lower end of first connector are hinged；
Multiple second connectors, the upper end and the lower end of the bonded joint are hinged；
Multiple first loads levers, are symmetrical arranged multiple loading hole along center two sides, and pass through the loading hole and described the
The lower end of two connectors is hinged；
Wherein, second connector is respectively set in the center two sides of the first load lever；
Multiple third connectors, the upper end and the center of the first load lever are hinged；
Multiple second load levers, both ends are hinged with the lower end of the third connector respectively；
Multiple 4th connectors, the upper end and the center of the second load lever are hinged；
Third loads lever, and both ends are hinged with the lower end of the 4th connector respectively；
Load bar, the upper end are fixedly connected with first tension sensor, the center hinge of lower end and third load lever
It connects.
2. the bonded joint fatigue property test device in vehicle service temperature according to claim 1 section, feature
It is, further includes：
Multiple second tension sensors, the upper end are detachably arranged on the lower surface of the fixed plate, lower end and described the
The upper end of a connection piece is fixedly connected.
3. the bonded joint fatigue property test device in vehicle service temperature according to claim 2 section, feature
It is, the bonded joint is 8.
4. the bonded joint fatigue property test device in vehicle service temperature according to claim 3 section, feature
It is, the first tension sensor range is at least 8 times of the second tension sensor range.
5. the bonded joint fatigue property test device in vehicle service temperature according to claim 1 or 4 section, special
Sign is that the connector is U-shaped connector.
6. the bonded joint fatigue property test device in vehicle service temperature according to claim 5 section, feature
It is, the lower end of the tension sensor is at least 200mm at a distance from the environment roof box.
7. the bonded joint fatigue property test device in vehicle service temperature according to claim 1 section, feature
It is, 3 loading hole are at least respectively set in first load lever central two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820667512.7U CN208109676U (en) | 2018-05-07 | 2018-05-07 | A kind of bonded joint fatigue property test device in vehicle service temperature section |
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| CN201820667512.7U CN208109676U (en) | 2018-05-07 | 2018-05-07 | A kind of bonded joint fatigue property test device in vehicle service temperature section |
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| CN208109676U true CN208109676U (en) | 2018-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732090A (en) * | 2018-05-07 | 2018-11-02 | 吉林大学 | Bonded joint fatigue property test device in a kind of vehicle service temperature section and test method |
-
2018
- 2018-05-07 CN CN201820667512.7U patent/CN208109676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732090A (en) * | 2018-05-07 | 2018-11-02 | 吉林大学 | Bonded joint fatigue property test device in a kind of vehicle service temperature section and test method |
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Granted publication date: 20181116 Termination date: 20200507 |
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