CN206531735U - Bending moment fastener fatigue test frock - Google Patents
Bending moment fastener fatigue test frock Download PDFInfo
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- CN206531735U CN206531735U CN201621492541.1U CN201621492541U CN206531735U CN 206531735 U CN206531735 U CN 206531735U CN 201621492541 U CN201621492541 U CN 201621492541U CN 206531735 U CN206531735 U CN 206531735U
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- fastener
- tie
- pulling plate
- upper arm
- bending moment
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 36
- 238000005452 bending Methods 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000002474 experimental method Methods 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims abstract description 27
- 230000007704 transition Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 3
- 238000011981 development test Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of bending moment fastener fatigue test frock, test tool includes first end respectively to bending moment fastener and pull-up portion and the pull-down section of the second end application pulling force, pull-up portion has upper arm-tie, pull-down section has lower pulling plate, test tool applies at least one surface in pulling force, the outer surface of upper arm-tie and the outer surface of lower pulling plate and includes inclined contact action face by the outer surface of upper arm-tie and the outer surface of lower pulling plate first end respectively to bending moment fastener and the second end.The utility model can make experiment fastener bear moment of flexure when carrying out fatigue test, contribute to fatigue properties of the development test fastener under complex stress effect.
Description
Technical field
The utility model is related to a kind of bending moment fastener fatigue test frock.
Background technology
Usual fastener (bolt, stud etc.) can be by axial tensile loads after tightening action, the mistake after long service
Effect form is often axial tension fatigue fracture.However, in actual use, due to mounting surface out-of-flatness or assembling inclination
Etc. reason, fastener is also possible to can be by moment of flexure, and its fatigue failure form after long service can be changed.In order to study
Influence of the Rig up error to fastener fatigue behaviour, can select that fastener is applied moment of flexure to carry out phase on fatigue tester
The fatigue test answered, so as to obtain load-Life Relation.In order to realize the purpose for applying moment of flexure to fastener, it is necessary to corresponding shape
The test tool of formula.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art that there is provided a kind of bending moment fastener
Fatigue test frock, the purpose that corresponding moment of flexure carries out fatigue test is applied to realize on fatigue tester to fastener.
According to embodiment of the present utility model, there is provided a kind of bending moment fastener fatigue test frock, the test tool bag
The pull-up portion being oppositely arranged and pull-down section are included, pull-up portion has upper arm-tie, and pull-down section has lower pulling plate, and test tool passes through pull-up
The outer surface of plate and the outer surface of lower pulling plate apply outside pulling force, upper arm-tie to the first end and the second end for testing fastener respectively
At least one surface in surface and the outer surface of lower pulling plate includes inclined contact action face, and the inclined contact action is faced
Test fastener and apply moment of flexure.
Further, pull-up portion includes upper connecting rod and upper arm-tie, and pull-down section includes lower pull bar and lower pulling plate.
Further, upper connecting rod and upper arm-tie are integrally formed, and the junction of upper connecting rod and upper arm-tie sets transition round platform, should
The diameter of transition round platform is more than the diameter of upper connecting rod, and the first end of upper connecting rod extends the transition to be formed and be connected with the transition round platform
Section.
Alternatively, the first end of upper connecting rod passes through the upper connecting rod perforation that is arranged on upper arm-tie center and by being oppositely arranged
Two locking nuts are respectively secured to outer surface and the inner surface of upper arm-tie.
Further, lower pull bar and lower pulling plate are integrally formed, and the junction of lower pull bar and lower pulling plate sets transition round platform, should
The diameter of transition round platform is more than the diameter of lower pull bar, and the first end of lower pull bar extends the transition to be formed and be connected with the transition round platform
Section.
Alternatively, the first end of lower pull bar passes through the lower pull bar perforation that is arranged on lower pulling plate center and by being oppositely arranged
Two locking nuts are respectively secured to inner surface and the outer surface of lower pulling plate.
Further, the upper perforation for the first end through experiment fastener is symmetrical arranged in the both sides of upper arm-tie,
The both sides of lower pulling plate are symmetrical arranged for the lower perforation through the second end of experiment fastener, and experiment fastener is each passed through correspondence
Upper perforation and lower perforation be fixedly mounted.
Further, experiment fastener is fixed between upper arm-tie and lower pulling plate by clamp nut.
Further, at least one surface in the outer surface of upper arm-tie and the outer surface of lower pulling plate includes horizontal plane and inclined
Oblique contact action face, contact action face is extended by level towards both sides to be formed.
Further, the inner side of the first end of experiment fastener or clamp nut are fitted with contact action face, and contact is made
Apply the moment of flexure for deviateing direction of pull to experiment fastener by clamp nut with face.
Compared with prior art, experiment fastener can be made according to bending moment fastener fatigue test frock of the present utility model
Fatigue test is carried out while moment of flexure is born, contributes to fatigue properties of the development test fastener under complex stress effect.
In addition, according to bending moment fastener fatigue test frock of the present utility model, not only overall structure is simple, Er Qieshi
The structure for testing all parts of frock is also very simple, assembles easy to maintenance, and be easily changed upper arm-tie and lower pulling plate.
Moreover, can be realized to two and two according to bending moment fastener fatigue test frock of the present utility model simultaneously
The testing fatigue of fastener is tested above.
Brief description of the drawings
Figure 1A to Fig. 1 C is the different angles of bending moment fastener fatigue test frock according to embodiment of the present utility model
Under perspective view；
Fig. 2A to Fig. 2 C is the upper arm-tie of the bending moment fastener fatigue test frock according to embodiment of the present utility model
Perspective view under different angles；
Fig. 3 A to Fig. 3 C are the lower pulling plates of the bending moment fastener fatigue test frock according to embodiment of the present utility model
Perspective view under different angles.
Embodiment
To make above-mentioned purpose of the present utility model, feature and advantage more clear and being readily appreciated that, below in conjunction with the accompanying drawings and
Embodiment is described in further detail to the utility model.
By following description, it will be appreciated by those skilled in the art that according to the bending moment of embodiment of the present utility model
Fastener fatigue test frock can carry out testing fatigue to one or more experiment fasteners.Here, it is clear in order to describe,
Bending moment fastener fatigue according to embodiment of the present utility model is described in case of testing two experiment fasteners
Test tool.
Figure 1A to Fig. 1 C is the different angles of bending moment fastener fatigue test frock according to embodiment of the present utility model
Under perspective view.
As shown in Figure 1A to Fig. 1 C, Fig. 2A to Fig. 2 C and Fig. 3 A to Fig. 3 C, according to embodiment of the present utility model by
Moment of flexure fastener fatigue test frock includes respectively applying the first end for testing fastener 5 and the second end in the pull-up portion 10 of pulling force
With pull-down section 20, as shown in Figure 1A, the first end of experiment fastener 5 can test fastener 5 to be attached to pull-up portion 10
One end, experiment fastener 5 the second end can be test fastener 5 the one end for being attached to pull-down section 20.In Figure 1A to figure
In embodiment shown in 1C, experiment fastener 5 is fastening bolt, and its one end is stud, and the other end is the bolt of nut shape
Head.Pull-up portion 10 includes upper arm-tie 11 and upper connecting rod 12, and pull-down section 20 includes lower pulling plate 21 and lower pull bar 22, and test tool passes through
The outer surface of upper arm-tie 11 and the outer surface of lower pulling plate 21 apply pulling force to the first end and the second end for testing fastener 5 respectively.
Upper connecting rod 12 is arranged on the center of upper arm-tie 11, upper connecting rod perforation 41 of its first end through the center of upper arm-tie 11.
Lower pull bar 22 is arranged on the center of lower pulling plate 21, lower pull bar perforation 42 of its first end through the center of lower pulling plate 21.Upper connecting rod 12
First end outer surface and the inner surface of upper arm-tie 11 are respectively secured to by two locking nuts 51 and 52 being oppositely arranged, under
The first end of pull bar 22 is respectively secured to the inner surface of lower pulling plate 21 and outer by two locking nuts 53 and 54 being oppositely arranged
Surface, wherein, the inner surface of upper arm-tie 11 and the inner surface of lower pulling plate 21 are the surface relative with lower pulling plate 21 of upper arm-tie 11, on
The outer surface of arm-tie 11 and the outer surface of lower pulling plate 21 are the surface opposite with lower pulling plate 21 of upper arm-tie 11.
In addition, experiment fastener 5 is fixed between upper arm-tie 11 and lower pulling plate 21 by clamp nut 55.Specifically, try
Fastener 5 is tested through upper arm-tie 11 and lower pulling plate 21, inner surface and the upper arm-tie 11 of the bolt head of experiment fastener 5 one end
Outer surface is contacted, and the stud for testing the other end of fastener 5 is then passed from lower pulling plate 21, and is connected with clamp nut 55 by screw thread
Connect, thus experiment fastener 5 is fixed between upper arm-tie 11 and lower pulling plate 21.
In other embodiments, upper connecting rod 12 may be integrally formed with upper arm-tie 11, and lower pull bar 22 can be integral with lower pulling plate 21
Formed.In this case, transition round platform, the diameter of the transition round platform can be set in the junction of upper connecting rod 12 and upper arm-tie 11
More than the diameter of upper connecting rod 12.Also, the first end of upper connecting rod extends the changeover portion to be formed and be connected with the transition round platform, to avoid
Stress concentration.Similar, lower pull bar 22 structure similar to the junction setting of lower pulling plate 21.
In addition, in other embodiments, pull-up portion 10 can only have upper arm-tie 11, pull-down section 20 can only have lower pulling plate
21, and be clamped in otherwise on testing machine, as long as testing machine can be by pulling the 20 pairs of examinations in pull-up portion 10 and pull-down section
Fastener is tested to be tested.
Fig. 2A to Fig. 2 C is the upper arm-tie of the bending moment fastener fatigue test frock according to embodiment of the present utility model
Perspective view under 11 different angles.
As shown in Fig. 2A to Fig. 2 C, the inner surface of upper arm-tie 11 and outer surface are parallel to each other, are set in the center of upper arm-tie 11
Upper connecting rod perforation 41 is equipped with, the He of upper perforation 31 for the stud through experiment fastener is symmetrical arranged in the both sides of upper arm-tie 11
32。
Fig. 3 A to Fig. 3 C are the lower pulling plates of the bending moment fastener fatigue test frock according to embodiment of the present utility model
Perspective view under 21 different angles.
As shown in Fig. 3 A to Fig. 3 C, lower pull bar perforation 42 is provided with the center of lower pulling plate 21, in the both sides of lower pulling plate 21
It is symmetrical arranged for the lower perforation 33 and 34 through experiment fastener.The outer surface of lower pulling plate 21 includes the horizontal plane positioned at stage casing
63, and the contact action face 61 and contact action face 62 extended from horizontal plane 63 to both sides.At one preferred embodiment
In, the angle between contact action face 61 and contact action face 62 and horizontal plane 63 is
In Figure 1A example, when carrying out the fatigue test of experiment fastener 5, the clamp nut 55 of fastener 5 is tested
Contacted with inclined contact action face 61 (or 62).In drawing process, clamp nut 55 and inclined contact action face 61 or
62 laminatings, inclined contact action face 61 (or 62) is applied by the screw rod of 55 pairs of experiment fasteners 5 of clamp nut deviates pulling force
The moment of flexure in direction, is achieved in the testing fatigue to bending moment fastener.
Not limited to this, different from Figure 1A mounting means, the inboard portion for testing the bolt head of fastener 5 connects with inclined
Acting surface 61 (or 62) contact is touched, the testing fatigue to bending moment fastener can also be realized.
In other embodiments, the inner surface of lower pulling plate 21 and the inner surface of upper arm-tie 11 may be configured as it is not parallel each other,
As long as upper arm-tie 11 and the shape or structure of lower pulling plate 21 disclosure satisfy that the tension test requirement to testing fastener 5.
In addition, the outer surface of upper arm-tie 11 is it can also be provided that including inclined contact action face, and lower pulling plate 21 is outer
Surface can not then include inclined contact action face 61 and 62.Herein, it is understood that, inclined contact action face refers to
Be the acting surface for being inclined relative to horizontal and being contacted with bolt head or clamp nut 55, and test fastener 5 then vertically
It is fixedly connected between upper arm-tie 11 and lower pulling plate 21, i.e. hung down relative to the installation direction with testing fastener 5 in contact action face
Straight plane (for example, horizontal plane) is tilted.In the embodiment shown in Fig. 3 A to Fig. 3 C, with angleShow contact action face 62
Angle of inclination with respect to the horizontal plane.
Using the test tool according to embodiment of the present utility model, when being tested, pass through locking nut 51- first
54 respectively by upper connecting rod 12 and upper arm-tie 11 and lower pull bar 22 and the stable connection of lower pulling plate 21, by upper connecting rod 12 and lower pull bar 22
The second end be clamped in respectively on testing machine, according to experiment fastener 5 length adjustment upper arm-tie 11 and lower pulling plate 21 between
Distance, then will test fastener 5 through the upper perforation 31 (or 32) of upper arm-tie 11 and vertical right with 31 (or 32) of upper perforation
The lower perforation 33 (or 34) for the lower pulling plate 21 answered, the position needed is fixed to by corresponding nut and pad by fastener 5 is tested
Put.Pulling force is applied to upper connecting rod 12 and lower pull bar 22 by testing machine, fastener 5 is now tested due to inclined contact action face
61 and 62 presence and by certain moment of flexure, axial force tensile fatigue test is carried out to experiment fastener 5, test load is recorded
And cycle-index during sample fracture.
In addition, the size of the moment of flexure of application can be adjusted by changing the angle of inclination in contact action face.When experiment fastening
When part 5 is bolt, it can be realized by the installation site of adjustment bolt head and thread segment to specifying bolt head or specified spiral shell
Line section applies moment of flexure.
In the above embodiments, to be described exemplified by clamping the test tool of two experiment fasteners, however, this
Art personnel are it should be clear that can simply change the structure of upper arm-tie and lower pulling plate and clamp one or more examination
Test fastener.Moreover, experiment fastener is also not necessarily limited to the other types of fastener such as bolt or stud.
Compared with prior art, the utility model can make experiment fastener carry out fatigue test while moment of flexure is born,
Contribute to fatigue properties of the development test fastener under complex stress effect.
In addition, according to bending moment fastener fatigue test frock of the present utility model, not only overall structure is simple, Er Qieshi
The structure for testing all parts of frock is also very simple, assembles easy to maintenance, and be easily changed upper arm-tie and lower pulling plate.
Embodiment in above-described embodiment can be further combined or replace, and embodiment is only new to this practicality
The preferred embodiment of type is described, and not spirit and scope of the present utility model are defined, new not departing from this practicality
On the premise of type design philosophy, the various changes and modifications that those skilled in the art make to the technical solution of the utility model,
Belong to protection domain of the present utility model.
Claims (11)
1. a kind of bending moment fastener fatigue test frock, it is characterised in that the test tool includes the pull-up being oppositely arranged
Portion (10) and pull-down section (20), the pull-up portion (10) have upper arm-tie (11), and the pull-down section (20) has lower pulling plate (21),
The test tool is fastened to experiment respectively by the outer surface of the upper arm-tie (11) and the outer surface of the lower pulling plate (21)
The first end of part (5) and the second end apply pulling force, the outer surface of the upper arm-tie (11) and the outer surface of the lower pulling plate (21)
In at least one surface include inclined contact action face (61) and (62), the inclined contact action face (61) and (62)
Moment of flexure is applied to the experiment fastener (5).
2. bending moment fastener fatigue test frock as claimed in claim 1, it is characterised in that the pull-up portion (10) includes
Upper connecting rod (12) and the upper arm-tie (11), the pull-down section (20) include lower pull bar (22) and the lower pulling plate (21).
3. bending moment fastener fatigue test frock as claimed in claim 2, it is characterised in that the upper connecting rod (12) and institute
State upper arm-tie (11) to be integrally formed, the junction of the upper connecting rod (12) and the upper arm-tie (11) sets transition round platform, described
The diameter of transition round platform is more than the diameter of the upper connecting rod (12), and the first end of the upper connecting rod (12) extends to be formed and the mistake
Cross the changeover portion of round platform connection.
4. bending moment fastener fatigue test frock as claimed in claim 2, it is characterised in that the of the upper connecting rod (12)
One end passes through the upper connecting rod perforation (41) for being arranged on the upper arm-tie (11) center and two locking nuts by being oppositely arranged
And (52) are respectively secured to outer surface and the inner surface of the upper arm-tie (11) (51).
5. bending moment fastener fatigue test frock as claimed in claim 2, it is characterised in that the lower pull bar (22) and institute
State lower pulling plate (21) to be integrally formed, the junction of the lower pull bar (22) and the lower pulling plate (21) sets transition round platform, described
The diameter of transition round platform is more than the diameter of the lower pull bar (22), and the first end of the lower pull bar (22) extends to be formed and the mistake
Cross the changeover portion of round platform connection.
6. bending moment fastener fatigue test frock as claimed in claim 2, it is characterised in that the of the lower pull bar (22)
One end passes through the lower pull bar perforation (42) for being arranged on the lower pulling plate (21) center and two locking nuts by being oppositely arranged
And (54) are respectively secured to inner surface and the outer surface of the lower pulling plate (21) (53).
7. bending moment fastener fatigue test frock as claimed in claim 2, it is characterised in that in the upper arm-tie (11)
Both sides are symmetrical arranged upper perforation (31) and (32) for the first end through the experiment fastener (5), in the lower pulling plate
(21) both sides are symmetrical arranged for the lower perforation (33) through the second end of the experiment fastener (5) and (34), the examination
Test fastener (5) and be each passed through corresponding upper perforation and lower perforation fixed installation.
8. bending moment fastener fatigue test frock as claimed in claim 7, it is characterised in that the experiment fastener (5)
It is fixed on by clamp nut (55) between the upper arm-tie (11) and the lower pulling plate (21).
9. the bending moment fastener fatigue test frock as any one of claim 1-7, it is characterised in that the pull-up
At least one surface in the outer surface of plate (11) and the outer surface of the lower pulling plate (21) includes horizontal plane (63) and described inclined
Oblique contact action face (61) and (62), wherein, the contact action face (61) and (62) are from the horizontal plane (63) to both sides
Extension is formed.
10. bending moment fastener fatigue test frock as claimed in claim 8, it is characterised in that the upper arm-tie (11)
At least one surface in outer surface and the outer surface of the lower pulling plate (21) includes horizontal plane (63) and the inclined contact
Acting surface (61) and (62), wherein, the contact action face (61) and (62) are extended from the horizontal plane (63) to both sides to be formed.
11. bending moment fastener fatigue test frock as claimed in claim 10, it is characterised in that the experiment fastener
(5) inner side of first end or the clamp nut (55) are fitted with the contact action face (61) and (62), the contact
Acting surface (61) and (62) are applied by the clamp nut (55) to the experiment fastener (5) deviates the curved of direction of pull
Square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492541.1U CN206531735U (en) | 2016-12-30 | 2016-12-30 | Bending moment fastener fatigue test frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492541.1U CN206531735U (en) | 2016-12-30 | 2016-12-30 | Bending moment fastener fatigue test frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206531735U true CN206531735U (en) | 2017-09-29 |
Family
ID=59920253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621492541.1U Active CN206531735U (en) | 2016-12-30 | 2016-12-30 | Bending moment fastener fatigue test frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206531735U (en) |
-
2016
- 2016-12-30 CN CN201621492541.1U patent/CN206531735U/en active Active
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