CN114458677A - Anti-loosening anchor bolt and installation method thereof - Google Patents
Anti-loosening anchor bolt and installation method thereof Download PDFInfo
- Publication number
- CN114458677A CN114458677A CN202210052804.0A CN202210052804A CN114458677A CN 114458677 A CN114458677 A CN 114458677A CN 202210052804 A CN202210052804 A CN 202210052804A CN 114458677 A CN114458677 A CN 114458677A
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- limiting nut
- anchor bolt
- pressure limiting
- piezoelectric sheet
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 title abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 46
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- 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
- F16B37/00—Nuts or like thread-engaging members
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a looseness-prevention anchor bolt and an installation method thereof, and belongs to the technical field of anchor bolt looseness prevention. Locking crab-bolt that moves includes crab-bolt body and locking subassembly. The anchor bolt body comprises a screw rod and a fastening nut, wherein the fastening nut is movably sleeved on the screw rod. The anti-loosening assembly comprises a pressure limiting nut, a ceramic piezoelectric sheet and an indicator light, wherein the pressure limiting nut and the ceramic piezoelectric sheet are movably sleeved on the screw rod, the ceramic piezoelectric sheet is clamped between the pressure limiting nut and the fastening nut, and the ceramic piezoelectric sheet is electrically connected with the indicator light so that the indicator light emits light. The anti-loosening anchor bolt provided by the embodiment of the invention can conveniently judge whether the anchor bolt is loosened or not by observing whether the indicator lamp flickers or not so as to prompt a safety inspector to carry out proper treatment in time, thereby avoiding potential safety hazards such as falling of electric power facilities and the like.
Description
Technical Field
The invention belongs to the technical field of anchor bolt looseness prevention, and particularly relates to a looseness-prevention anchor bolt and an installation method thereof.
Background
With the rapid development of the traffic technology in China, the running speed of high-speed railway trains is gradually increased, and the running of high-speed railways at the speed of 400km per hour becomes possible. Along with the increase of the vehicle speed, the aerodynamic problem in the high-speed railway tunnel is more obvious.
Train wind and air pressure waves inside the high-speed railway tunnel are always very popular research objects in the high-speed railway tunnel aerodynamics, the aerodynamic effect can generate very adverse effect on electric auxiliary facilities in the high-speed railway tunnel, and according to the railway tunnel design specification (TB 10003-2016), the peak value of the aerodynamic additional pressure of the auxiliary facilities in the 350km/h high-speed railway tunnel is 8.9 kPa.
However, in many high-speed railway tunnel trackside electric facilities (electric power box, lighting lamp, etc.) are fastened and connected by using anchor bolts, and under the long-term repeated effect of the aerodynamic effect generated by a high-speed train, the fastening nuts of the high-speed railway tunnel are loosened, so that potential safety hazards such as falling of the electric facilities are generated.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides the anti-loosening anchor bolt and the installation method thereof, and aims to conveniently judge whether the anchor bolt is loosened or not by observing whether the indicator lamp flickers or not so as to prompt a safety inspector to carry out proper treatment in time, thereby avoiding potential safety hazards such as falling of electric power facilities and the like.
In a first aspect, the invention provides a looseness-prevention anchor bolt, which comprises an anchor bolt body and a looseness-prevention assembly;
the anchor bolt body comprises a screw rod and a fastening nut, and the fastening nut is movably sleeved on the screw rod;
the anti-loosening assembly comprises a pressure limiting nut, a ceramic piezoelectric sheet and an indicator light, wherein the pressure limiting nut and the ceramic piezoelectric sheet are movably sleeved on the screw rod, the ceramic piezoelectric sheet is clamped between the pressure limiting nut and the fastening nut, and the ceramic piezoelectric sheet is electrically connected with the indicator light so that the indicator light emits light.
Optionally, the length of the screw is 100-150mm, and the diameter of the screw is 12-15 mm.
Optionally, the fastening nut and the pressure limiting nut are both regular hexagonal nuts.
Optionally, the length of the edge of the regular hexagonal nut is 18-20 mm.
Optionally, a U-shaped notch is formed in the peripheral wall of the pressure limiting nut, the U-shaped notch penetrates through the pressure limiting nut, and the indicator light is movably inserted into the U-shaped notch.
Optionally, the inner peripheral wall of the U-shaped notch has an elastic layer, the elastic layer is disposed along the inner peripheral wall of the U-shaped notch, and the elastic layer is sandwiched between the pressure limiting nut and the indicator light.
In a second aspect, the present invention provides a method for installing a anti-loosening anchor bolt, the method being based on the anti-loosening anchor bolt of the first aspect, and the method including:
inserting one end of the screw rod into a fastener to be connected, and sleeving the other end of the screw rod with the fastening nut to enable the fastening nut to lock the fastener;
the ceramic piezoelectric sheet and the pressure limiting nut are sequentially sleeved at the other end of the screw rod, so that the pressure limiting nut clamps the ceramic piezoelectric sheet until the indicator lamp is turned on;
and loosening the pressure limiting nut to enable the indicator lamp to be turned off.
Optionally, in said unscrewing said pressure limiting nut so that said indicator light is extinguished:
the unscrewing angle of the pressure limiting nut is 15-30 degrees.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the installation process of the anti-loosening anchor bolt provided by the embodiment of the invention, firstly, one end of the screw rod is inserted into a fastener (such as an electric box and a tunnel) to be connected, and the other end of the screw rod is sleeved with the fastening nut, so that the fastening nut locks the fastener. Then, the ceramic piezoelectric sheet and the pressure-limiting nut are sequentially sleeved at the other end of the screw rod, so that the pressure-limiting nut clamps the ceramic piezoelectric sheet until the indicator lamp is lightened, the ceramic piezoelectric sheet is clamped by the pressure-limiting nut under the limit of the fastening nut, the ceramic piezoelectric sheet is stressed to generate exciting current, and the indicator lamp is lightened at the moment. And finally, loosening the pressure limiting nut to extinguish the indicator lamp, so that the ceramic piezoelectric sheet is relieved of pressure to relieve the generation of exciting current by adjusting the position of the pressure limiting nut, and the indicator lamp is extinguished, thereby completing the installation of the whole device. Thereafter, when the tightening nut is loose, i.e. the screw is stationary, the tightening nut is moved relative to the screw. After the fastening nut is loosened (can move towards the pressure limiting nut), the ceramic piezoelectric sheet can be in a pressed state to generate exciting current, and then the indicating lamp can be caused to light up so as to prompt a safety inspector to perform proper treatment in time.
That is to say, the anti-loosening anchor bolt provided by the embodiment of the invention can conveniently judge whether the anchor bolt is loosened by observing whether the indicator light flickers or not so as to prompt a safety inspector to perform appropriate treatment in time, thereby avoiding potential safety hazards such as falling of electric power facilities and the like.
Drawings
FIG. 1 is a schematic structural view of a locking anchor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pressure-limiting nut provided in an embodiment of the present invention;
fig. 3 is a flowchart of a method for installing a locking anchor according to an embodiment of the present invention.
The symbols in the drawings represent the following meanings:
1. an anchor bolt body; 11. a screw; 12. fastening a nut; 2. a locking assembly; 21. a pressure limiting nut; 211. a U-shaped notch; 212. an elastic layer; 22. a ceramic piezoelectric sheet; 23. an indicator light; 24. and (4) conducting wires.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic structural view of a locking anchor according to an embodiment of the present invention, and as shown in fig. 1, the locking anchor includes an anchor body 1 and a locking assembly 2.
The anchor bolt body 1 comprises a screw rod 11 and a fastening nut 12, wherein the fastening nut 12 is movably sleeved on the screw rod 11 (the fastening nut 12 is in threaded fit with the screw rod 11).
The anti-loosening assembly 2 comprises a pressure limiting nut 21, a ceramic piezoelectric sheet 22 and an indicator lamp 23, wherein the pressure limiting nut 21 and the ceramic piezoelectric sheet 22 are movably sleeved on the screw rod 11 (the pressure limiting nut 21 is in threaded fit with the screw rod 11, and the ceramic piezoelectric sheet 22 is in sliding fit with the screw rod 11), the ceramic piezoelectric sheet 22 is clamped between the pressure limiting nut 21 and the fastening nut 12, and the ceramic piezoelectric sheet 22 is electrically connected with the indicator lamp 23 so that the indicator lamp 23 emits light.
In the installation process of the anti-loosening anchor bolt provided by the embodiment of the invention, firstly, one end of the screw rod 11 is inserted into a fastener (such as an electric box and a tunnel) to be connected, and the other end of the screw rod 11 is sleeved with the fastening nut 12, so that the fastening nut 12 locks the fastener. Then, the ceramic piezoelectric plate 22 and the pressure-limiting nut 21 are sequentially sleeved on the other end of the screw 11, so that the pressure-limiting nut 21 clamps the ceramic piezoelectric plate 22 until the indicator lamp 23 is turned on, and the pressure-limiting nut 21 clamps the ceramic piezoelectric plate 22 under the limit of the fastening nut 12, the ceramic piezoelectric plate 22 is pressed to generate an excitation current (according to the piezoelectric induction principle, the piezoelectric material generates charges on the surface after being stressed), and the indicator lamp 23 is turned on at the moment. Finally, the pressure limiting nut 21 is unscrewed, so that the indicator lamp 23 is extinguished, the ceramic piezoelectric sheet 22 is relieved of pressure by adjusting the position of the pressure limiting nut 21, the generation of excitation current is relieved, the indicator lamp 23 is extinguished at the moment, and the installation of the whole device is completed. Thereafter, when the fastening nut 12 is loosened, i.e., the screw 11 is fixed, the fastening nut 12 is moved relative to the screw 11. After the fastening nut 12 is loosened (moves towards the pressure limiting nut 21), the ceramic piezoelectric sheet 22 is in a pressed state to generate an excitation current, and then the indicator lamp 23 is turned on to prompt a safety inspector to perform appropriate treatment in time.
That is to say, the anti-loosening anchor bolt provided by the embodiment of the invention can conveniently judge whether the anchor bolt is loosened by observing whether the indicator lamp 23 flickers, so as to prompt a safety inspector to perform appropriate treatment in time, thereby avoiding potential safety hazards such as falling of electric power facilities.
Illustratively, the ceramic piezoelectric sheet 22 and the indicator light 23 may be electrically connected by a wire 24.
In the present embodiment, the length of the screw 11 may be 100-150mm, and the diameter of the screw 11 may be 12-15mm, so that the screw 11 has a large structural strength and connection range.
In order to facilitate the rotation in cooperation with the wrench, the fastening nut 12 and the pressure limiting nut 21 may be both regular hexagonal nuts.
Illustratively, the length of the edge of a regular hexagonal nut may be 18-20 mm.
It should be noted that the fastening nut 12 and the pressure limiting nut 21 may have the same or different sizes, and the present invention is not limited thereto.
Fig. 2 is a schematic structural diagram of a pressure limiting nut according to an embodiment of the present invention, and as shown in fig. 2, an outer peripheral wall of the pressure limiting nut 21 has a U-shaped notch 211, the U-shaped notch 211 penetrates through the pressure limiting nut 21, and an indicator light 23 is movably inserted into the U-shaped notch 211.
In the above embodiment, the U-shaped notch 211 can be used for inserting the indicator lamp 23, so that the indicator lamp 23 can be conveniently installed, and an installation foundation is provided for the indicator lamp 23.
Illustratively, the inner peripheral wall of the U-shaped notch 211 is provided with an elastic layer 212, the elastic layer 212 is arranged along the inner peripheral wall of the U-shaped notch 211, and the elastic layer 212 is sandwiched between the pressure limiting nut 21 and the indicator lamp 23.
In the above embodiment, the elastic layer 212 not only can buffer the indicator lamp 23 during the insertion of the indicator lamp 23, but also can make the installation of the indicator lamp 23 more stable by its elasticity.
Illustratively, the resilient layer 212 may be a nylon structure.
In this embodiment, the anti-loose component 2 may further include a buzzer, and the buzzer and the indicator light 23 are electrically connected to the ceramic piezoelectric sheet 22 after being connected in parallel.
In the above embodiment, the buzzer may further prompt the security inspector to perform appropriate processing in time, so as to prevent the security inspector from not finding the signal that the indicator lamp 23 is turned on. In addition, when the indicator lamp 23 is in failure, the buzzer can also play a role of alarm prompt.
Fig. 3 is a flowchart of an installation method of a anti-loosening anchor bolt according to an embodiment of the present invention, and as shown in fig. 3, the installation method is based on the anti-loosening anchor bolt, and the installation method includes:
s301, inserting one end of the screw rod 11 into a fastener to be connected, and sleeving a fastening nut 12 on the other end of the screw rod 11 to enable the fastening nut 12 to lock the fastener.
It will be readily appreciated that the fastening nut 12, when installed in place, securely locks the fastener.
S302, the ceramic piezoelectric sheet 22 and the pressure limiting nut 21 are sequentially sleeved at the other end of the screw rod 11, so that the pressure limiting nut 21 clamps the ceramic piezoelectric sheet 22 until the indicator lamp 23 is on.
Illustratively, the installation positions of the pressure limiting nut 21, the ceramic piezoelectric sheet 22 and the fastening nut 12 follow the principle from top to bottom along the embedding direction of the screw 11.
In addition, the pressure limiting nut 21 is screwed down first, so that the pressure limiting nut 21 supports and positions the ceramic piezoelectric sheet 22, and the ceramic piezoelectric sheet 22 is prevented from being easily excited in the subsequent working process due to the large interval between the pressure limiting nut 21 and the fastening nut 12. Meanwhile, the state that the ceramic piezoelectric sheet 22 can be in a pressed state to generate the excitation current and the relative position of the pressure limiting nut 21 and the fastening nut 12 at the time can be exactly determined, so that the pressure limiting nut 21 can be easily unscrewed in comparison with the state to adjust the unscrewing angle of the pressure limiting nut 21. And the pressure limiting nut 21 is unscrewed to release the pressure state of the ceramic piezoelectric sheet 22, so that the indicator lamp 23 is extinguished, and the looseness of the fastening nut 12 can be monitored.
S303, loosening the pressure limiting nut 21 to enable the indicator lamp 23 to be turned off.
At this time, the ceramic piezoelectric sheet 22 is released from being pressed to release the generation of the exciting current, the indicator lamp 23 is turned off, and the entire apparatus is mounted. Thereafter, when the fastening nut 12 is loosened, i.e., the screw 11 is fixed, the fastening nut 12 is moved relative to the screw 11. After the fastening nut 12 is loosened (moves towards the pressure limiting nut 21), the ceramic piezoelectric sheet 22 is in a pressed state to generate an excitation current, and then the indicator lamp 23 is turned on to prompt a safety inspector to perform appropriate treatment in time.
The anti-loosening anchor bolt provided by the invention can provide timely and effective warning when loosening occurs, so that the accident of falling of a fastening piece is avoided, and the overall safety is improved. For example: by applying the anti-loosening anchor bolt in the high-speed railway tunnel, timely and effective warning can be provided when the anchor bolt is loosened, maintenance and repair are facilitated, and overall safety is improved.
For example, in unscrewing the pressure-limiting nut 21 so that the indicator light 23 is extinguished: the unscrewing angle of the pressure limiting nut 21 is 15-30 degrees, so that the locking device can be suitable for locking under different working conditions.
It is easy to understand that, on the premise that the pressure limiting nut 21 is loosened to make the indicator lamp 23 not light, when the requirement for fastening the fastener is high, the loosening angle of the pressure limiting nut 21 is small (for example, the loosening angle is 15 °), so that the indicator lamp 23 can light when the fastening nut 12 is slightly loosened. When the fastening requirement of the fastener is not high, the loosening angle of the pressure limiting nut 21 is large (for example, the loosening angle is 30 °), so that when the fastening nut 12 is largely loosened, the ceramic piezoelectric sheet 22 is pressed to light the indicator lamp 23, and the indicator lamp 23 is prevented from being easily lit, so that the fastening nut can be applied to different occasions.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The anti-loosening anchor bolt is characterized by comprising an anchor bolt body (1) and an anti-loosening assembly (2);
the anchor bolt body (1) comprises a screw rod (11) and a fastening nut (12), and the fastening nut (12) is movably sleeved on the screw rod (11);
the anti-loosening assembly (2) comprises a pressure limiting nut (21), a ceramic piezoelectric sheet (22) and an indicator lamp (23), the pressure limiting nut (21) and the ceramic piezoelectric sheet (22) are movably sleeved on the screw rod (11), the ceramic piezoelectric sheet (22) is clamped between the pressure limiting nut (21) and the fastening nut (12), and the ceramic piezoelectric sheet (22) is electrically connected with the indicator lamp (23) so that the indicator lamp (23) emits light.
2. Anti-loosening anchor according to claim 1, characterised in that the length of the threaded rod (11) is 100-150mm and the diameter of the threaded rod (11) is 12-15 mm.
3. Anti-loosening anchor according to claim 1, characterised in that the fastening nut (12) and the pressure-limiting nut (21) are both regular hexagonal nuts.
4. The anti-loosening anchor bolt according to claim 3, wherein the length of the edge of the regular hexagonal nut is 18-20 mm.
5. The anti-loosening anchor bolt according to claim 1, wherein the pressure-limiting nut (21) has a U-shaped notch (211) on its outer circumferential wall, the U-shaped notch (211) penetrates the pressure-limiting nut (21), and the indicator light (23) is movably inserted into the U-shaped notch (211).
6. The anti-loosening anchor bolt according to claim 5, wherein the inner peripheral wall of the U-shaped notch (211) is provided with an elastic layer (212), the elastic layer (212) is arranged along the inner peripheral wall of the U-shaped notch (211), and the elastic layer (212) is sandwiched between the pressure limiting nut (21) and the indicator light (23).
7. A method for installing a locking bolt, characterized in that the method is based on a locking bolt according to any one of claims 1-6, and the method comprises:
inserting one end of the screw rod (11) into a fastener to be connected, and sleeving the fastening nut (12) on the other end of the screw rod (11) so that the fastening nut (12) locks the fastener;
the ceramic piezoelectric sheet (22) and the pressure limiting nut (21) are sequentially sleeved at the other end of the screw rod (11), so that the pressure limiting nut (21) clamps the ceramic piezoelectric sheet (22) until the indicator lamp (23) is turned on;
and loosening the pressure limiting nut (21) to enable the indicator lamp (23) to be extinguished.
8. Method for installing a anti-loosening anchor according to claim 7, characterized in that, during the unscrewing of the pressure-limiting nut (21), so that the indicator light (23) is extinguished:
the unscrewing angle of the pressure limiting nut (21) is 15-30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052804.0A CN114458677B (en) | 2022-01-18 | 2022-01-18 | Anti-loosening anchor bolt and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052804.0A CN114458677B (en) | 2022-01-18 | 2022-01-18 | Anti-loosening anchor bolt and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114458677A true CN114458677A (en) | 2022-05-10 |
| CN114458677B CN114458677B (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210052804.0A Active CN114458677B (en) | 2022-01-18 | 2022-01-18 | Anti-loosening anchor bolt and installation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286550A (en) * | 2016-09-29 | 2017-01-04 | 大连理工大学 | A kind of intelligent nut device for monitoring bolt connection state |
| CN108253006A (en) * | 2017-12-14 | 2018-07-06 | 中国航空工业集团公司成都飞机设计研究所 | A kind of washer that discoloration coating is caused based on power |
| CN110887648A (en) * | 2019-11-18 | 2020-03-17 | 湖南科技大学 | Monitoring system and monitoring method for evaluating bolt looseness and failure |
| CN210978148U (en) * | 2019-12-04 | 2020-07-10 | 上海宜欧金属制品有限公司 | Accuse locknut in balance car |
| CN112268650A (en) * | 2020-10-30 | 2021-01-26 | 浙江海力股份有限公司 | Bolt assembly for high-voltage power transmission tower and anti-loosening detection method thereof |
| CN213239424U (en) * | 2020-09-01 | 2021-05-18 | 上海底特精密紧固件股份有限公司 | Intelligent gasket for monitoring bolt looseness |
| US20210355981A1 (en) * | 2020-05-14 | 2021-11-18 | China Pneumatic Corporation | Bolt clamping force sensing washer |
| CN215492179U (en) * | 2021-03-02 | 2022-01-11 | 南京林业大学 | Real-time bolt pretightening force detection device based on piezoelectric effect |
-
2022
- 2022-01-18 CN CN202210052804.0A patent/CN114458677B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286550A (en) * | 2016-09-29 | 2017-01-04 | 大连理工大学 | A kind of intelligent nut device for monitoring bolt connection state |
| CN108253006A (en) * | 2017-12-14 | 2018-07-06 | 中国航空工业集团公司成都飞机设计研究所 | A kind of washer that discoloration coating is caused based on power |
| CN110887648A (en) * | 2019-11-18 | 2020-03-17 | 湖南科技大学 | Monitoring system and monitoring method for evaluating bolt looseness and failure |
| CN210978148U (en) * | 2019-12-04 | 2020-07-10 | 上海宜欧金属制品有限公司 | Accuse locknut in balance car |
| US20210355981A1 (en) * | 2020-05-14 | 2021-11-18 | China Pneumatic Corporation | Bolt clamping force sensing washer |
| CN213239424U (en) * | 2020-09-01 | 2021-05-18 | 上海底特精密紧固件股份有限公司 | Intelligent gasket for monitoring bolt looseness |
| CN112268650A (en) * | 2020-10-30 | 2021-01-26 | 浙江海力股份有限公司 | Bolt assembly for high-voltage power transmission tower and anti-loosening detection method thereof |
| CN215492179U (en) * | 2021-03-02 | 2022-01-11 | 南京林业大学 | Real-time bolt pretightening force detection device based on piezoelectric effect |
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| CN114458677B (en) | 2023-06-02 |
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