CN111503112A - Grating intelligence annular rivet - Google Patents
Grating intelligence annular rivet Download PDFInfo
- Publication number
- CN111503112A CN111503112A CN202010479737.1A CN202010479737A CN111503112A CN 111503112 A CN111503112 A CN 111503112A CN 202010479737 A CN202010479737 A CN 202010479737A CN 111503112 A CN111503112 A CN 111503112A
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- China
- Prior art keywords
- rivet
- grating sensor
- grating
- blind hole
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 239000003292 glue Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a grating intelligent ring groove rivet. The grating sensor measuring device comprises a grating sensor and an annular groove rivet, wherein a blind hole with a step structure is formed in the center of an annular groove rivet shaft from a riser to a rivet rod, a measuring end of the grating sensor is located in the blind hole and is in contact with the bottom of the blind hole, and an end fixing device is arranged on the grating sensor and is fixed with a step part of the blind hole of the annular groove rivet through threaded connection. The invention solves the problem that the axial force of the ring groove rivet can not be monitored in real time in the installation and use processes, and simultaneously, the service life of the sensor is prolonged through the grating sensor armored by the stainless steel protective sleeve; the grating sensor is connected with the ring groove rivet in a threaded manner, and the grating sensor can be detached and used for multiple times, so that the utilization rate of the grating sensor is improved, and the cost can be saved; the arrangement of the grating sensor can reduce the strength damage to the ring groove rivet, and is suitable for the tail breaking ring groove rivet to realize the monitoring of the axial force in the riveting process.
Description
Technical Field
The invention belongs to the technical field of riveting, particularly belongs to the design and manufacture of a rivet-riveting fastener, belongs to the riveting class (B21J) and the fastener class (F16B) of metal machining, and particularly relates to a grating intelligent ring groove rivet.
Background
The detection of the axial force of a fastener is a common problem which is ubiquitous and needs to be solved urgently in the industry. In some key equipment in the industrial fields of aerospace, rail transit, building steel structures, wind power generation, nuclear power valves, power plants, chemical engineering, boilers, water pumps and the like, the requirement for detecting the axial force of the fastener is met, the conventional detection method adopts an axial force sensor or indirect calculation through torque, and the method capable of detecting the axial force in real time in the installation and application of the fastener is not available temporarily.
The ring groove rivet is a deformation connection technology, and the metal of the ring flows into the ring-shaped teeth of the rivet to form permanent fastening connection by axially stretching the rivet and radially extruding the ring. The axial force of the rivet in installation and use cannot be detected, so that the annular groove rivet capable of detecting the fastening axial force in real time is required to be designed.
Chinese application 201520131780.3 discloses an intelligent bolt, including the inside bolt body of seting up the through-hole, the fixed setting in the through-hole of bolt body of fiber grating sensor body through fixed plug screw. The fiber grating sensor is positioned in the bolt body, so that the contradiction between the bolt structure and the mounting space of the sensor is overcome, the fiber grating sensor is protected, and meanwhile, the reliability of the fiber grating sensor is improved; the intelligent bolt of this application is that bolt body and grating sensor pass through threaded connection, uses in measurement or structural health control field firstly for environmental factors such as perception temperature, load, pressure, secondly digital label function is used for data storage and identification.
In the technical field of fastening connection, bolt connection and snap-off rivet connection are substantially different, and the application cannot realize monitoring of riveting axial force in the snap-off rivet connection.
Disclosure of Invention
The invention discloses a grating intelligent ring groove rivet. The invention aims to provide a ring groove rivet capable of detecting fastening axial force in real time, and solves the problem that the fastening axial force of the ring groove rivet in the installation and application processes is detected in real time in the prior art.
The invention is realized by the following technical scheme:
grating intelligence annular rivet, including grating sensor and annular rivet, the annular rivet includes the rail, no annular groove section, annular groove section and the tail tooth that set up in proper order, its characterized in that: the annular rivet shaft center is provided with a blind hole with a step structure from a riser to a rivet rod, a measuring end of the grating sensor is positioned in the blind hole and is contacted with the bottom of the blind hole, and the grating sensor is provided with an end fixing device which is fixedly connected with a step part of the blind hole of the annular rivet through threads.
The grating sensor comprises grating body, tip fixing device, outer stainless steel protective sheath, fixed glue film, is provided with the screw thread that combines with annular rivet blind hole step in the tip fixing device periphery, is fixed by fixed glue film between grating body and the outer stainless steel protective sheath.
The inner side hole of the step structure of the annular rivet blind hole is internally provided with an internal thread combined with the end fixing device of the grating sensor, the diameter of the blind hole at the inner side section of the sleeved grating sensor is 1 mm-1.5 mm, and the length of the blind hole is 1/2-2/3 of the length of the rivet without the annular groove.
A thread locking glue layer for fixing is coated between the end fixing device and the step combining part of the blind hole of the annular groove rivet; the locking glue layer can reduce the error caused by the gap between the internal thread and the external thread.
The working principle of the invention is as follows: the sensitivity of the resonance wavelength of the grating sensor to stress strain and temperature change is utilized to measure the stress strain, the grating sensor is organically combined with the ring groove rivet, and the grating sensor is utilized to measure the strain of the ring groove rivet in the working process, so that the axial force of the ring groove rivet is indirectly measured. The grating intelligent rivet core adopts the contact of the measuring end of the grating sensor and the blind hole, so that the pre-compression amount is generated after the grating is combined with the annular groove rivet, the rivet rod is elastically deformed after the annular groove rivet is riveted, the pre-compression amount of the grating is reduced, and the axial force of the rivet can be indirectly measured through the change of the pre-compression amount.
The invention has the following beneficial effects: the invention solves the problem that the axial force of the ring groove rivet can not be monitored in real time in the installation and use processes, and simultaneously, the service life of the sensor is prolonged through the grating sensor armored by the stainless steel protective sleeve. The grating sensor and the annular groove rivet are connected through the threads, and compared with a mode that the grating sensor is directly fixed with the annular groove rivet through glue, the grating sensor is detachable and can be used for multiple times, the utilization rate of the grating sensor is improved, and the cost can be saved. Compared with the connection of a through hole and a grating sensor, the intelligent bolt disclosed by CN204493395U can reduce the strength damage to the ring groove rivet, is suitable for the tail breaking ring groove rivet, and realizes the monitoring of the axial force in the riveting process.
Drawings
FIG. 1 is a schematic diagram of a grating smart ring groove rivet structure according to the present invention;
FIG. 2 is a schematic diagram of a grating sensor;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic illustration of a ring groove rivet.
1-grating sensor, 2-ring groove rivet, 101-grating body, 102-end fixing device, 103-outer layer stainless steel protective sleeve, 104-fixing glue layer, 201-rail, 202-ring groove-free section, 203-ring groove section, 204-tail tooth, 205-blind hole.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the invention and is not intended to limit the invention in any way, but is equivalent or analogous to the present invention without departing from its scope.
With reference to the attached drawings.
The invention comprises a grating sensor 1 and a ring groove rivet 2; the grating sensor 1 comprises a grating sensor body 101, an end fixing device 102, an outer stainless steel protective sleeve 103, a fixing adhesive layer 104 and the like, wherein the grating sensor body 101 and the outer stainless steel protective sleeve 103 are tightly combined into a whole through the fixing adhesive layer 104, so that the grating sensor body 101 can be protected, and the service life of the grating sensor 1 is prolonged;
the end fixing device 102 is provided with an external thread and an optical fiber lead, the external thread is used for being matched with the internal thread on the ring groove rivet 2 to play a role in fixing the grating sensor 1, and the optical fiber lead is connected with the grating sensor 1 and the grating signal processor and used for transmitting grating signals.
The step-type blind hole 205 is axially arranged at the rail 201 end of the ring groove rivet 2, an internal thread is arranged in a side hole of a step structure of the blind hole 205 and is used for being matched with the end fixing device 102 of the grating sensor 1 to fix the grating sensor 1, the diameter of the inner side section of the step-type blind hole 205 is about 1 mm-1.5 mm, and the length of the inner side section is 1/2-2/3 of the length of the ring groove-free rivet.
A thread locking glue layer for fixing is coated between the end fixing device 102 and the step combining part of the blind hole of the annular groove rivet; the locking glue layer can reduce the error caused by the gap between the internal thread and the external thread.
As shown in FIGS. 1-4, the grating intelligent ring groove rivet comprises a grating sensor 1 and a ring groove rivet 2.
Specifically, the grating sensor 1 is composed of a grating sensor body 101, an end fixing device 102, an outer stainless steel protective sleeve 103 and a fixing glue layer 104; the ring groove rivet 2 consists of a riser 201, a ring groove-free section 202, a ring groove section 203, a tail tooth 204 and a step type blind hole 205. The grating sensor 1 and the ring groove rivet 2 are organically combined through the threads between the step sections of the end fixing device 102 and the blind hole 205, so that the grating sensor becomes an intelligent ring groove rivet for detecting the axial force.
The side that grating sensor body 101 links to each other with end fixing device 102 is the lead end, and the other end is the side volume end, and the measuring terminal contacts with step type blind hole 205 bottom, before annular groove rivet 2 is not installed, grating sensor body 101 bears certain precompression volume, and annular groove rivet 2 is installed and is used the back, under the effect of fastening shaft power, takes place to warp along the axial for grating sensor body 101's precompression volume changes, can implement through the change of grating precompression volume and detect annular groove rivet fastening shaft power.
In addition, in order to improve the detection accuracy of the fastening shaft force, a thread locking glue can be used on the thread between the end fixing device 102 and the stepped blind hole 205, so that the error caused by the gap between the inner thread and the outer thread can be reduced.
Claims (4)
1. The utility model provides a grating intelligence annular rivet, includes grating sensor and annular rivet, the annular rivet includes the tower head, no annular groove section, annular groove section and the tail tooth that set up in proper order, its characterized in that: the annular rivet shaft center is provided with a blind hole with a step structure from a riser to a rivet rod, a measuring end of the grating sensor is positioned in the blind hole and is contacted with the bottom of the blind hole, and the grating sensor is provided with an end fixing device which is fixedly connected with a step part of the blind hole of the annular rivet through threads.
2. The grating smart ring groove rivet of claim 1, wherein: the grating sensor comprises grating body, tip fixing device, outer stainless steel protective sheath, fixed glue film, is provided with the screw thread that combines with annular rivet blind hole step in the tip fixing device periphery, is fixed by fixed glue film between grating body and the outer stainless steel protective sheath.
3. The grating smart ring groove rivet of claim 2, wherein: the inner side hole of the step structure of the annular rivet blind hole is internally provided with an internal thread combined with the end fixing device of the grating sensor, the diameter of the blind hole at the inner side section of the sleeved grating sensor is 1 mm-1.5 mm, and the length of the blind hole is 1/2-2/3 of the length of the rivet without the annular groove.
4. The grating smart ring groove rivet of claim 3, wherein: and a thread locking glue layer for fixing is coated between the end fixing device and the step combining part of the blind hole of the annular groove rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010479737.1A CN111503112A (en) | 2020-05-29 | 2020-05-29 | Grating intelligence annular rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010479737.1A CN111503112A (en) | 2020-05-29 | 2020-05-29 | Grating intelligence annular rivet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111503112A true CN111503112A (en) | 2020-08-07 |
Family
ID=71872106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010479737.1A Pending CN111503112A (en) | 2020-05-29 | 2020-05-29 | Grating intelligence annular rivet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111503112A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070144267A1 (en) * | 2005-12-27 | 2007-06-28 | Honda Motor Co., Ltd. | Method for measuring shear load of fastening tool |
| CN102728768A (en) * | 2012-06-04 | 2012-10-17 | 南车眉山车辆有限公司 | Method for fastening member with high strength and low riveting force and 10.9-level short-tail pulling rivet |
| CN103277387A (en) * | 2013-05-17 | 2013-09-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Intelligent bolt for optical fiber grating sensor |
| CN204493395U (en) * | 2015-03-09 | 2015-07-22 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of intelligent bolt |
| CN107165917A (en) * | 2017-05-27 | 2017-09-15 | 国网河南省电力公司电力科学研究院 | A kind of built-in optical fibre intelligent screw bolt |
| CN108488179A (en) * | 2018-01-22 | 2018-09-04 | 上海航空材料结构检测股份有限公司 | intelligent composite rivet |
| CN212479848U (en) * | 2020-05-29 | 2021-02-05 | 眉山中车紧固件科技有限公司 | Detachable grating intelligent ring groove rivet |
-
2020
- 2020-05-29 CN CN202010479737.1A patent/CN111503112A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070144267A1 (en) * | 2005-12-27 | 2007-06-28 | Honda Motor Co., Ltd. | Method for measuring shear load of fastening tool |
| CN102728768A (en) * | 2012-06-04 | 2012-10-17 | 南车眉山车辆有限公司 | Method for fastening member with high strength and low riveting force and 10.9-level short-tail pulling rivet |
| CN103277387A (en) * | 2013-05-17 | 2013-09-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Intelligent bolt for optical fiber grating sensor |
| CN204493395U (en) * | 2015-03-09 | 2015-07-22 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of intelligent bolt |
| CN107165917A (en) * | 2017-05-27 | 2017-09-15 | 国网河南省电力公司电力科学研究院 | A kind of built-in optical fibre intelligent screw bolt |
| CN108488179A (en) * | 2018-01-22 | 2018-09-04 | 上海航空材料结构检测股份有限公司 | intelligent composite rivet |
| CN212479848U (en) * | 2020-05-29 | 2021-02-05 | 眉山中车紧固件科技有限公司 | Detachable grating intelligent ring groove rivet |
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