CN220367121U - Device for blind rivet tension load experiment - Google Patents
Device for blind rivet tension load experiment Download PDFInfo
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- CN220367121U CN220367121U CN202322017404.9U CN202322017404U CN220367121U CN 220367121 U CN220367121 U CN 220367121U CN 202322017404 U CN202322017404 U CN 202322017404U CN 220367121 U CN220367121 U CN 220367121U
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- blind rivet
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- 238000002474 experimental method Methods 0.000 title claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 30
- 238000012360 testing method Methods 0.000 claims description 13
- 239000011888 foil Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Measurement Of Force In General (AREA)
Abstract
The utility model discloses a device for a blind rivet pulling load experiment, which comprises a supporting sleeve, a movable part and a force measuring part, wherein the supporting sleeve comprises an embedding cavity for embedding the force measuring part, a through hole I is formed in the bottom of the embedding cavity, a through hole II is formed in the surface, facing the through hole I, of the force measuring part, the through hole I and the through hole II are coaxially arranged, a strain gauge is arranged on the force measuring part, the force measuring part comprises a stress end, the strain gauge is arranged on one side, close to the through hole II, of the stress end, the supporting sleeve is fixed with an external fixing device, the blind rivet penetrates through the through hole I and the through hole II, the force measuring part and the embedding cavity are relatively fixed under the action of the blind rivet, after the blind rivet is riveted, the force is applied to the stress end through the movable part, the force measuring part is stretched, a certain deformation is generated, the strain gauge transmits a strain signal to an external receiving device, and the external receiving device converts a force value born by the force measuring part, and the change of the load bearing force value is measured until the blind rivet is damaged in the process.
Description
Technical Field
The utility model belongs to the technical field of experiments, and particularly relates to a device for a self-plugging rivet tension load experiment.
Background
The self-plugging rivet is mainly used for single-sided riveting and comprises a rivet body and a rivet core, wherein the rivet body is of a hollow structure, a limiting cap is arranged at one end of the rivet body, a deformable section is arranged at the other end of the rivet body, and the rivet core is positioned in the rivet body. During riveting, the deformable section of the riveting body expands to play a role in riveting. The self-plugging rivet is suitable for the riveting occasion of not adopting the common rivet (needing to rivet from two sides), so the self-plugging rivet is widely applied to products such as buildings, automobiles, ships, airplanes, machines, electric appliances, furniture and the like. In order to ensure the delivery quality and the research and development requirements, manufacturers generally detect the performances of the blind rivet in all aspects, such as tensile strength experiments, shear strength experiments and the like
In the existing tensile load experiment related standard, the tooling requirement of the self-plugging rivet is not specified, so that an existing manufacturer can usually adopt a general experimental device to carry out detection experiments, and the general experimental device cannot be highly matched with the self-plugging rivet, so that the whole experiment efficiency is low, and the experimental result is easy to error and has certain influence on the production and research and development of the manufacturer.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a device for quickly and accurately carrying out a tension load experiment of a self-plugging rivet.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a device for self-plugging rivet pulling force load experiment, includes supporting sleeve, movable part and dynamometry portion, the supporting sleeve is including the embedding chamber that supplies dynamometry portion embedding, the chamber end in embedding chamber is equipped with through-hole one, be equipped with through-hole two on the face of dynamometry portion towards through-hole one, through-hole one and through-hole two coaxial setting, be equipped with the foil gage in the dynamometry portion, the dynamometry portion includes the atress end, the movable part is exerted the power that makes dynamometry portion remove to the direction of keeping away from embedding chamber end to the atress end, the foil gage is established in one side that the atress end is close to through-hole two.
By adopting the scheme, the supporting sleeve is fixed with the external fixing device, the self-plugging rivet penetrates through the first through hole and the second through hole and is riveted, the force measuring part and the embedded cavity are kept relatively fixed under the action of the self-plugging rivet, and at the moment, the surface of the force measuring part, which faces the cavity bottom of the embedded cavity, is abutted with the cavity bottom of the embedded cavity. After the self-plugging rivet is riveted, a force is applied to the stress end through the movable part, so that the force measuring part is stretched to generate certain deformation, the strain gauge transmits a strain signal to the external receiving device, and the external receiving device converts the force value born by the force measuring part, so that the change of the bearing capacity value after the self-plugging rivet is riveted and subjected to external force until the self-plugging rivet is damaged is measured.
As a further arrangement of the utility model, the cavity bottom of the embedded cavity is also provided with a penetrating hole, the movable part comprises a pressure-bearing part and a penetrating part penetrating the penetrating hole, and the penetrating part is positioned at one side of the pressure-bearing part facing the force measuring part.
By adopting the scheme, the pressure-bearing part is convenient for external machinery to apply force to the movable part, and the stress end is stably stressed by the penetrating part and the penetrating hole. The through holes can be round holes, at least two through holes are formed at the moment, all the through holes are rotationally symmetrical along the axis of the first through hole, the through part is in a rod shape, and the radial section of the first through hole is consistent with the shape of the through hole. The through holes can also be arc holes extending along the circumferential direction of the first through hole, at least two through holes are formed at the moment, all the through holes are rotationally symmetrical along the axis of the first through hole, the through parts are plate-shaped, and the radial section along the first through hole is consistent with the shape of the through holes.
As a further arrangement of the utility model, the penetrating holes are round holes, the number of the penetrating holes is at least four, all the penetrating holes are rotationally symmetrical along the axis of the first through hole, and the penetrating parts are in round rod shapes.
By adopting the scheme, the stable stress of the stress end is ensured.
As a further arrangement of the utility model, the stress end is a boss arranged on the outer wall of the force measuring part, the movable part also comprises a pressure-bearing sleeve sleeved outside the force measuring part, and the surface of the penetrating part far away from the pressure-bearing part and the surface of the stress end facing the penetrating hole are respectively abutted with two opposite end surfaces of the pressure-bearing sleeve.
By adopting the scheme, the pressure bearing part can be acted on the stress end more uniformly by the pressure bearing sleeve, so that the experimental result is more in line with the actual working condition.
As a further arrangement of the utility model, the embedded cavity is cylindrical, the embedded cavity and the first through hole are coaxially arranged, the pressure-bearing sleeve is cylindrical, the force-measuring part is cylindrical, the force-bearing end is annular, and the pressure-bearing sleeve, the force-measuring part, the force-bearing end and the second through hole are coaxially arranged.
By adopting the scheme, the stress of the stress end is more balanced, and the situation of overlarge local stress is prevented.
As a further arrangement of the utility model, the maximum diameter of the pressure jacket is greater than the maximum diameter of the force-bearing end.
By adopting the scheme, the stress end is prevented from being contacted with the cavity wall of the embedded cavity.
As a further arrangement of the utility model, the outer wall of the pressure-bearing sleeve is provided with a groove which is annular and the bottom of the groove extends along the circumferential direction of the pressure-bearing sleeve.
By adopting the scheme, the contact area of the pressure-bearing sleeve and the embedded cavity is reduced, the friction force between the pressure-bearing sleeve and the embedded cavity during experiments is reduced, and the test error is reduced.
As a further arrangement of the utility model, the force measuring part comprises a mounting cavity, the direction of the opening of the mounting cavity is consistent with that of the opening of the embedded cavity, the second through hole is arranged at the bottom of the mounting cavity, the outer wall of the force measuring part is provided with a mounting groove, the strain gauge is arranged in the mounting groove, and the bottom of the mounting groove is provided with a first wiring hole communicated with the mounting cavity.
By adopting the scheme, the mounting groove can prevent the strain gauge from contacting the pressure-bearing sleeve, and the signal wire of the strain gauge can pass through the first wiring hole and penetrate out of the cavity bottom of the mounting cavity, so that the stable transmission of the strain signal in the experimental process is ensured. Preferably, the bottom of the mounting cavity is circular, and the axis of the second through hole coincides with the axis of the mounting cavity, so that the self-plugging rivet is stressed stably.
As a further arrangement of the utility model, the mounting groove is annular and the groove bottom of the mounting groove extends in the circumferential direction of the force measuring part.
By adopting the scheme, the width of the mounting groove along the axial direction of the through hole II is preferably larger than the height of the 1/2 force measuring part along the axial direction of the through hole II, the contact area between the force measuring part and the pressure bearing sleeve can be reduced by the existence of the mounting groove, the friction force between the pressure bearing sleeve and the force measuring part during experiments is reduced, and the test errors are reduced.
As a further arrangement of the utility model, the depth of the embedded cavity along the axial direction of the through hole I is larger than the height of the force measuring part along the axial direction of the through hole I, the cavity wall of the embedded cavity is provided with the wiring hole II, and the minimum distance from the wiring hole II to the bottom of the embedded cavity is larger than the height of the force measuring part along the axial direction of the through hole I.
By adopting the scheme, after the signal wire of the strain gauge passes out from the first wiring hole, the signal wire of the strain gauge passes out from the second wiring hole and is connected with an external receiving device, so that the strain signal can be stably transmitted in the experimental process.
The utility model is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the interior of an embodiment of the present utility model;
FIG. 2 is a top view of an embodiment of the present utility model;
fig. 3 is a cross-sectional view A-A of fig. 2.
The self-plugging rivet comprises a supporting sleeve 1, an embedding cavity 11, a first through hole 12, a penetrating hole 13, a second wiring hole 14, a movable part 2, a pressure bearing part 21, a penetrating part 22, a pressure bearing sleeve 23, a groove 231, a force measuring part 3, a second through hole 31, a force bearing end 32, a mounting cavity 33, a mounting groove 34, a first wiring hole 35, a strain gauge 4 and a self-plugging rivet 5.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, unless otherwise specified, the directions or positional relationships as indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. in the description are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
Specific embodiments of the present utility model are shown in FIGS. 1-3.
The utility model provides a device for self-plugging rivet pulling force load experiment, including supporting sleeve 1, movable part 2 and dynamometry portion 3, supporting sleeve 1 is including supplying the embedded chamber 11 of dynamometry portion 3 embedding, the chamber end of embedded chamber 11 is equipped with through-hole one 12, be equipped with through-hole two 31 on the face of dynamometry portion 3 orientation through-hole one 12, through-hole one 12 and through-hole two 31 coaxial arrangement, dynamometry portion 3 includes atress end 32, movable part 2 exerts the power that makes dynamometry portion 3 to keeping away from the direction of embedded chamber 11 chamber end to atress end 32, be equipped with foil gage 4 on the dynamometry portion 3, foil gage 4 is established in the one side that atress end 32 is close to through-hole two 31.
The support sleeve 1 is fixed with an external fixing device, the blind rivet 5 is penetrated and arranged in the first through hole 12 and the second through hole 31 and is fixed, the force measuring part 3 and the embedded cavity 11 are kept relatively fixed under the action of the blind rivet 5, and at the moment, the surface of the force measuring part 3 facing the cavity bottom of the embedded cavity 11 is abutted with the cavity bottom of the embedded cavity 11. After the self-plugging rivet 5 is riveted, a force is applied to the force-bearing end 32 through the movable part 2, so that the force-bearing part 3 is stretched to generate certain deformation, the strain gauge 4 transmits a strain signal to an external receiving device, and the external receiving device can calculate the force value born by the force-bearing part 3 in a conversion manner, so that the change of the bearing capacity value in the process of being damaged due to the external force applied to the self-plugging rivet 5 after being riveted is measured.
The bottom of the embedded cavity 11 is also provided with a penetrating hole 13, and the movable part 2 comprises a pressure bearing part 21, a penetrating part 22 penetrating into the penetrating hole 13 and a pressure bearing sleeve 23 sleeved outside the force measuring part 3. The force-bearing end 32 is a boss arranged on the outer wall of the force-measuring part 3, and the surface of the penetrating part 22 away from the pressure-bearing part 21 and the surface of the force-bearing end 32 facing the penetrating hole 13 are respectively abutted with two opposite end surfaces of the pressure-bearing sleeve 23. The pressure-bearing part 21 facilitates the external machine to apply force to the movable part 2, and the arrangement of the penetrating part 22 and the penetrating hole 13 ensures that the stress end 32 is stressed stably. The pressure bearing sleeve 23 can more uniformly act on the stress end 32 by the force borne by the pressure bearing part 21, so that the experimental result is more in line with the actual working condition.
In this embodiment, eight through holes 13 are provided, the through holes 13 are circular holes, all the through holes 13 are rotationally symmetrical along the axis of the first through hole 12, and the through part 22 is in a circular rod shape. According to different designs, the through holes 13 may be designed as arc holes extending along the circumferential direction of the first through hole 12, at least two through holes 13 are formed at this time, all through holes 13 are rotationally symmetrical along the axis of the first through hole 12, the through portion 22 is plate-shaped, and the radial section along the first through hole 12 is identical to the shape of the through hole 13.
The embedded cavity 11 is cylindrical, the embedded cavity 11 and the through hole I12 are coaxially arranged, the pressure-bearing sleeve 23 is cylindrical, the force measuring part 3 is cylindrical, the force bearing end 32 is annular, and the pressure-bearing sleeve 23, the force measuring part 3, the force bearing end 32 and the through hole II 31 are coaxially arranged. The stress of the stress end 32 is more balanced, and the situation of overlarge local stress is prevented.
The maximum diameter of the pressure-bearing sleeve 23 is larger than the maximum diameter of the force-bearing end 32, preventing the force-bearing end 32 from contacting the wall of the embedded cavity 11.
The outer wall of the pressure-bearing sleeve 23 is provided with a groove 231, the groove 231 is annular, and the bottom of the groove 231 extends along the circumferential direction of the pressure-bearing sleeve 23. The existence of the grooves 231 can reduce the contact area between the pressure-bearing sleeve 23 and the embedded cavity 11, reduce the friction force between the pressure-bearing sleeve 23 and the embedded cavity 11 during experiments, and reduce test errors.
The force measuring part 3 comprises a mounting cavity 33, the direction of the cavity opening of the mounting cavity 33 is consistent with the direction of the cavity opening of the embedded cavity 11, the second through hole 31 is arranged at the bottom of the mounting cavity 33, the outer wall of the force measuring part 3 is provided with a mounting groove 34, the strain gauge 4 is arranged in the mounting groove 34, and the bottom of the mounting groove 34 is provided with a first wiring hole 35 communicated with the mounting cavity 33. The existence of the mounting groove 34 can reduce the contact area between the force measuring part 3 and the pressure bearing sleeve 23, reduce the friction force between the pressure bearing sleeve 23 and the force measuring part 3 during experiments, and reduce the test error. And the mounting groove 34 can prevent the strain gauge 4 from contacting the pressure-bearing sleeve 23, and the signal wire of the strain gauge 4 can pass through the first wiring hole 35 and pass out of the bottom of the mounting cavity 33, so that the stable transmission of the strain signal in the experimental process is ensured. In this embodiment, the bottom of the mounting cavity 33 is circular, and the axis of the second through hole 31 coincides with the axis of the mounting cavity 33, so that the blind rivet 5 is stressed stably.
The mounting groove 34 is annular and the groove bottom of the mounting groove 34 extends in the circumferential direction of the force measuring portion 3. In this embodiment, the width of the mounting groove 34 along the axial direction of the second through hole 31 is greater than the height of the 1/2 force measuring portion 3 along the axial direction of the second through hole 31.
The axial depth of the embedded cavity 11 along the first through hole 12 is larger than the axial height of the force measuring part 3 along the first through hole 12, the cavity wall of the embedded cavity 11 is provided with a second wiring hole 14, and the minimum distance from the second wiring hole 14 to the bottom of the embedded cavity 11 is larger than the axial height of the force measuring part 3 along the first through hole 12. After the signal wire of the strain gauge 4 passes out of the first wiring hole 35, the signal wire passes out of the second wiring hole 14 and is connected with an external receiving device, so that the stable transmission of strain signals in the experimental process is ensured.
The present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the disclosure of the present utility model, may implement the present utility model in various other embodiments, or simply change or modify the design structure and thought of the present utility model, which fall within the protection scope of the present utility model.
Claims (10)
1. A device for blind rivet tensile load experiment, its characterized in that: including supporting sleeve, movable part and dynamometry portion, the support sleeve is including supplying the embedding chamber of dynamometry portion embedding, the chamber end in embedding chamber is equipped with the through-hole one, be equipped with the through-hole two on the face of dynamometry portion towards the through-hole one, through-hole one and through-hole two coaxial settings, be equipped with the foil gage on the dynamometry portion, the dynamometry portion includes the atress end, the movable part is exerted the power that makes dynamometry portion to keeping away from the direction at embedding chamber end to the atress end and is removed, the foil gage is established in one side that the atress end is close to the through-hole two.
2. A device for blind rivet pull load testing according to claim 1, characterized in that: the embedded cavity is characterized in that a penetrating hole is further formed in the cavity bottom of the embedded cavity, the movable portion comprises a pressure-bearing portion and a penetrating portion penetrating the penetrating hole, and the penetrating portion is located on one side, facing the force measuring portion, of the pressure-bearing portion.
3. A device for blind rivet pull load testing according to claim 2, characterized in that: the through holes are round holes, the number of the through holes is at least four, all the through holes are rotationally symmetrical along the axis of the first through hole, and the through parts are in a round rod shape.
4. A device for blind rivet pull load testing according to claim 2 or 3, characterized in that: the bearing end is a boss arranged on the outer wall of the force measuring part, the movable part further comprises a bearing sleeve sleeved outside the force measuring part, and the surface of the penetrating part away from the bearing part and the surface of the bearing end facing the penetrating hole are respectively abutted with two opposite end surfaces of the bearing sleeve.
5. A device for blind rivet pull load testing according to claim 4, wherein: the embedded cavity is cylindrical, the embedded cavity and the first through hole are coaxially arranged, the pressure-bearing sleeve is cylindrical, the force measuring part is cylindrical, the force bearing end is annular, and the pressure-bearing sleeve, the force measuring part, the force bearing end and the second through hole are coaxially arranged.
6. A device for blind rivet pull load testing according to claim 5, wherein: the maximum diameter of the pressure-bearing sleeve is larger than the maximum diameter of the stress end.
7. A device for blind rivet pull load testing according to claim 5 or 6, characterized in that: the outer wall of the pressure-bearing sleeve is provided with a groove which is annular and the bottom of the groove extends along the circumferential direction of the pressure-bearing sleeve.
8. A device for blind rivet pull load testing according to claim 7, wherein: the force measuring part comprises an installation cavity, the direction of the cavity opening of the installation cavity is consistent with that of the cavity opening of the embedded cavity, the second through hole is formed in the cavity bottom of the installation cavity, an installation groove is formed in the outer wall of the force measuring part, the strain gauge is arranged in the installation groove, and a first wiring hole communicated with the installation cavity is formed in the bottom of the installation groove.
9. A device for blind rivet pull load testing according to claim 8, wherein: the mounting groove is annular, and the bottom of the mounting groove extends along the circumferential direction of the force measuring part.
10. A device for blind rivet pull load testing according to claim 8 or 9, characterized in that: the depth of the embedded cavity along the axial direction of the through hole I is larger than the height of the force measuring part along the axial direction of the through hole I, a wiring hole II is arranged on the cavity wall of the embedded cavity, and the minimum distance from the wiring hole II to the cavity bottom of the embedded cavity is larger than the height of the force measuring part along the axial direction of the through hole I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322017404.9U CN220367121U (en) | 2023-07-28 | 2023-07-28 | Device for blind rivet tension load experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322017404.9U CN220367121U (en) | 2023-07-28 | 2023-07-28 | Device for blind rivet tension load experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220367121U true CN220367121U (en) | 2024-01-19 |
Family
ID=89515368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322017404.9U Active CN220367121U (en) | 2023-07-28 | 2023-07-28 | Device for blind rivet tension load experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220367121U (en) |
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2023
- 2023-07-28 CN CN202322017404.9U patent/CN220367121U/en active Active
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