CN205383171U - A intelligent gasket device for $monitoring bolted connection interface - Google Patents
A intelligent gasket device for $monitoring bolted connection interface Download PDFInfo
- Publication number
- CN205383171U CN205383171U CN201620194842.XU CN201620194842U CN205383171U CN 205383171 U CN205383171 U CN 205383171U CN 201620194842 U CN201620194842 U CN 201620194842U CN 205383171 U CN205383171 U CN 205383171U
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- bolted connection
- gasket
- notch
- monitoring
- connection interface
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims description 22
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 2
- 238000011089 mechanical engineering Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model belongs to civil engineering and mechanical engineering's bolted connection field provides an intelligent gasket device for $monitoring bolted connection interface, is applicable to bolted connection's various interface monitoring problem. The utility model discloses mainly comprise two parts, some is that two opening size are unanimous, measure -alike shim liner is pasted and is formed, and another part is the piezoceramics piece that is equipped with the welding lead of shielding shell, and two parts combination forms. Specific theory is that supersound wave propagation route can be influenced when bolted connection interface emergence is not hard up, and intelligent gasket transmit and receive signal will change, and utilizes the change of received signal energy can guess the state of locating at the bolted connection interface conversely, the utility model is suitable for a various bolted connection interfaces condition, and the simple structure of device own, the suitability is strong, for monitoring the simple and convenient feasible method that provides in bolted connection interface in the engineering.
Description
Technical field
This utility model belongs to civil engineering and mechanical bolt connection area, specifically, it is when bolt linkage interface occurs to loosen, hyperacoustic propagation path can be affected, intelligent gasket is launched and is received signal and will change, and utilizing the change of the signal energy received can speculate bolt linkage interface state in which in turn, this intelligent gasket based on piezoelectric ceramics provides a kind of simple and feasible method for bolt linkage interface monitoring in engineering.
Background technology
Modern large civil structure, for instance LARGE SPAN STEEL BRIDGE, in the structure such as high-rise building and Large Transmission Tower, bolt connects as a kind of important connected mode, and its reliability is to ensure that construction quality and the basis of structure normal service.Therefore, the research of its linkage interface damage monitoring is increasingly subject to people's attention.
Piezoelectric ceramics is used in a lot of aspect as a kind of novel intellectual material.The piezoelectric effect that it has is the key property that any piezoelectric all has.Under meeting certain temperature conditions, when piezoelectric element is applied mechanically deform, internal positive and negative charge center will be caused to occur relative movement to produce polarization a little, thus causing that the bound charge that symbol is contrary occur in two surfaces of element, and charge density is proportional to external force, this phenomenon is called direct piezoelectric effect.Otherwise, two surfaces of piezoelectric element apply voltage, due to the effect of electric field, cause the internal positive and negative charge center of piezoelectric element to produce relative displacement, cause the deformation of piezoelectric element, i.e. inverse piezoelectric effect.This utility model utilizes this positive piezoelectricity and inverse piezoelectric effect specific to piezoelectric ceramics just.
For having numerous bolted interface, traditional monitoring to rely on the artificial monitoring bolt that goes one by one to loosen situation, and this monitoring is not only wasted time and energy but also detection for some special constructions also has certain risk.
Utility model content
In order to solve the problems referred to above, this utility model provides a kind of intelligent gasket device for monitoring bolt linkage interface, the mock-up (such as Fig. 1) of intelligent gasket device, is mainly made up of two parts, a part is the pad of fluting, and another part is mounted in the piezoelectric ceramics of inside.
It should be noted that intelligent gasket is work in pairs, launch signal for one, another receives signal.When bolt looseness, the interface of connection changes, and the ultrasonic signal paths traversed that intelligent gasket is launched also can change, and causes that the ultrasonic signal received changes, and the signal change information according to receiving may determine that bolt linkage interface state in which.
The technical solution of the utility model:
A kind of intelligent gasket device for monitoring bolt linkage interface, including Upper gasket 1, lower gasket 2, upper notch 3, lower notch 4, piezoelectric ceramic piece 5, shielding case 6 and epoxy resin filling protective layer 7；The identical annular Upper gasket of structure 1 and annular lower gasket 2 is symmetrical pastes, Upper gasket 1 and have notch 3 and lower notch 4 on lower gasket 2, upper notch 3 one overall notch of formation relative to lower notch 4；Filling piezoelectric ceramic piece in notch, wire is welded on the both positive and negative polarity of piezoelectric ceramic piece, puts one layer of epoxy resin filling protective layer at the piezoelectric ceramics On-Chip peripheral having welded wire, and epoxy resin filling protective layer outer surface is provided with metal shielding.
The beneficial effects of the utility model:
1, this device relies on the piezoelectric effect that piezoelectric ceramics has, and finally utilizes electrical signal detection interface and bolt state, it is not necessary to manual site detects, time saving and energy saving.And the installation and integrally-built performance for bolt does not affect.
2, this device genus utilizes actively monitoring method in real time structure to be detected.
3, this utility model simple structure, part is less, makes and installation process is simple, and the suitability is strong, and cost is low and easy to maintenance, can effectively monitor out bolt linkage interface safe condition, has wide popularization market and application prospect.
Accompanying drawing explanation
Fig. 1 is this utility model entirety material object profile schematic diagram.
Fig. 2 is front view of the present utility model.
In figure: 1 Upper gasket；2 lower gaskets；Notch on 3；4 times notches；5 piezoelectric ceramic pieces；6 shielding cases；7 epoxy resin filling protective layers.
Detailed description of the invention
This utility model provides a kind of intelligent gasket device for monitoring bolt linkage interface, and detailed description of the invention is as follows:
The Upper gasket 1 of intelligent gasket and lower gasket 2 adopt Q235 Steel material to make, and have stronger intensity and and certain toughness.Upper gasket 1 and lower gasket 2 respectively being opened the upper notch 3 of a same size and lower notch 4, two panels has been opened the Upper gasket 1 of groove and lower gasket 2 is symmetrically placed bonding with 502 glue and two notches are adjacent, upper notch 3 and lower notch 4 are used for placing piezoelectric ceramic piece 5.Piezoelectric ceramic piece 5 to carry out following process in advance: selects thinner thickness, the piezoelectric ceramic piece of notch after to be dimensioned slightly smaller than two bonding, at piezoelectric ceramics surface both positive and negative polarity welding lead.An epoxy coating is applied on the piezoelectric ceramic piece surface having welded wire, coating epoxy resin is to ensure that the insulating properties of the piezoelectric ceramics having welded wire, doing layer shielding case 6 at outer surface copper again after epoxy resin is completely air-dry, this is the interference in order to shield outside noise signal.To the notch epoxy resin filling protective layer 7 between Upper gasket 1 and the lower gasket 2 after bonding; when ensureing epoxy resin or liquid condition, the piezoelectric ceramics being surrounded by coat is embedded and be fitted into, treat that epoxy resin can use with circuit tester detection insulation after air-dry.
It should be noted that intelligent gasket is to use in pairs, a pair intelligent gasket workmanship material is identical, and in two intelligent gaskets, any one is as signal transmitting terminal, and another can as signal receiving end.Consider that pad in use can rotate along with the rotation of bolt, which adds the effect of signals factor recorded, in therefore using, pad can be pasted onto bolt junction point monitored interface outer surface, the impact of the factor that removes uncertainty.
In addition this intelligent gasket device can do some optimizations depending on concrete condition, it can change part and mainly include the size of the geometric shape size of pad, fluting, the selection application of some major parameters such as piezoelectric ceramics model, is exactly also installation site and the quantity etc. of intelligent gasket.
Claims (1)
1. the intelligent gasket device for monitoring bolt linkage interface, it is characterised in that this intelligent gasket device includes Upper gasket, lower gasket, upper notch, lower notch, piezoelectric ceramic piece, shielding case and epoxy resin filling protective layer；The identical annular Upper gasket of structure and annular lower gasket symmetry are pasted, Upper gasket and have notch and lower notch on lower gasket, and upper notch is relative with lower notch forms an overall notch；Filling piezoelectric ceramic piece in notch, wire is welded on the both positive and negative polarity of piezoelectric ceramic piece, puts one layer of epoxy resin filling protective layer at the piezoelectric ceramics On-Chip peripheral having welded wire, and epoxy resin filling protective layer outer surface is provided with metal shielding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620194842.XU CN205383171U (en) | 2016-03-11 | 2016-03-11 | A intelligent gasket device for $monitoring bolted connection interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620194842.XU CN205383171U (en) | 2016-03-11 | 2016-03-11 | A intelligent gasket device for $monitoring bolted connection interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383171U true CN205383171U (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620194842.XU Active CN205383171U (en) | 2016-03-11 | 2016-03-11 | A intelligent gasket device for $monitoring bolted connection interface |
Country Status (1)
| Country | Link |
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| CN (1) | CN205383171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605078A (en) * | 2016-03-11 | 2016-05-25 | 大连理工大学 | Intelligent gasket device for monitoring bolt connecting interface |
| CN106225982A (en) * | 2016-09-07 | 2016-12-14 | 广东明阳风电产业集团有限公司 | A kind of bolt moment of flexure and pulling force decoupling test sensor and method of testing thereof |
-
2016
- 2016-03-11 CN CN201620194842.XU patent/CN205383171U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605078A (en) * | 2016-03-11 | 2016-05-25 | 大连理工大学 | Intelligent gasket device for monitoring bolt connecting interface |
| CN105605078B (en) * | 2016-03-11 | 2018-07-13 | 大连理工大学 | A kind of intelligent gasket device for monitoring bolt linkage interface |
| CN106225982A (en) * | 2016-09-07 | 2016-12-14 | 广东明阳风电产业集团有限公司 | A kind of bolt moment of flexure and pulling force decoupling test sensor and method of testing thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |