CN113092098A - Bolt looseness detection device adaptive to bolts with different lengths - Google Patents
Bolt looseness detection device adaptive to bolts with different lengths Download PDFInfo
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- CN113092098A CN113092098A CN202110443515.9A CN202110443515A CN113092098A CN 113092098 A CN113092098 A CN 113092098A CN 202110443515 A CN202110443515 A CN 202110443515A CN 113092098 A CN113092098 A CN 113092098A
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- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 230000003044 adaptive effect Effects 0.000 title abstract description 5
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000007888 film coating Substances 0.000 claims description 5
- 238000009501 film coating Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
Abstract
The invention discloses a bolt looseness detection device adaptive to bolts with different lengths, which comprises a stator disc, a rotor disc, a shell and an angle sensor, wherein a key groove is formed in the side wall of the shell, a positioning pin is arranged on the circumferential side wall of the stator disc, the positioning pin is arranged in the key groove in a sliding clamping manner, the angle sensor is arranged on one side, away from an installation through hole, of the stator disc, a sensor input shaft is arranged on the angle sensor, the sensor input shaft penetrates through the stator disc to be connected with the rotor disc in a coaxial line mode, and an industrial-grade double-faced adhesive layer is arranged on the side wall, away. The invention belongs to the technical field of mechanical equipment detection, anomaly detection and bolt looseness detection, and particularly provides a bolt looseness detection device which converts bolt looseness into relative motion of a rotor disc and a stator disc, judges the looseness state of bolts through an angle sensor and is convenient to deploy in a large scale and suitable for bolts with different lengths.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment detection, abnormity detection and bolt looseness detection, and particularly relates to a bolt looseness detection device adaptive to bolts with different lengths.
Background
Bolts and nuts play an important role in various fields of national production as a classical connecting and fastening device. Particularly in some large-scale projects, such as railway transportation, aerospace, wind power generation, machining, ships and oceans and the like, the fastening state of bolts at key positions determines the health and safety state of the project, and once the bolt is loosened, disastrous consequences can be caused, and great loss can be caused to lives and properties of people.
Generally, the failure of the bolt is mainly fracture and loosening, wherein the loosening is the most common problem. At present, a plurality of methods for detecting the bolt looseness exist, such as simple marking by means of marking, pretightening force detection, nonlinear characteristic detection of a connecting system, ultrasonic characteristic detection, computer vision detection and the like, and the methods have advantages, but are not favorable for deployment in actual production and especially are not favorable for application in scenes needing to detect a large number of bolts due to complex principles and cost constraints.
Therefore, the development of the device for detecting the looseness of the bolts with different lengths, which has the advantages of simple structure, high reliability, low cost and convenience for large-scale deployment, has great significance for production safety and promotion of national economic development.
Disclosure of Invention
In order to solve the existing problems, the invention provides the bolt looseness detection device which is matched with the bolts with different lengths, has a simple structure, high reliability and low cost, is convenient for large-scale deployment, converts the looseness of the bolts into the relative motion of the rotor and the stator in the relative motion mechanism through structural design, collects the responding mechanical motion through the angle sensor, and judges the looseness state of the bolts through forming electric signals.
The technical scheme adopted by the invention is as follows: the bolt looseness detection device matched with bolts with different lengths comprises a relative movement mechanism, a shell and an angle sensor, wherein the shell is arranged in a regular hexagon hollow cavity, the shell arranged in a regular hexagon is convenient to be matched with the nut so as to be convenient for fixedly clamping the nut, one side of the shell is provided with an installation through hole, the relative movement mechanism comprises a stator disc and a rotor disc, the side wall of the shell is provided with a key groove, the circumferential side wall of the stator disc is provided with a positioning pin, the positioning pin is arranged in the key groove in a sliding clamping manner, the stator disc is arranged in the shell in a sliding clamping manner through the positioning pin and the key groove, the positioning pin and the key groove are convenient for limiting the rotation of the stator disc so that the stator disc cannot rotate relative to the shell, the movement of the stator disc and the shell is synchronous, and meanwhile, the key groove is convenient for adjusting, the detection of the looseness of bolts with different heights is realized, the angle sensor is arranged on one side, away from the installation through hole, of the stator disc, a sensor input shaft penetrates through the angle sensor, the rotor disc is rotatably arranged on a central shaft portion, close to the installation through hole, of the stator disc, the sensor input shaft penetrates through the stator disc and is coaxially connected with the rotor disc, an industrial-grade double-faced adhesive layer is arranged on the side wall, away from the stator disc, of the rotor disc, and the industrial-grade double-faced adhesive layer facilitates fixing of the rotor disc on the end face of the bolt so that the sensor input shaft and the bolt; the stator disc is slidably clamped in the shell and cannot rotate, so that the stator disc and the rotor disc form a relative movement mechanism, when the bolt is loosened, the bolt drives the rotor disc to rotate, the rotor disc drives the sensor input shaft to synchronously rotate, the angle sensor inputs the rotation angle of the rotor disc through the sensor input shaft, namely the relative movement angle of the input bolt and the nut, and then the relative movement condition of the bolt to be detected and the nut to be detected is measured and converted into an electric signal or a digital signal; the shell lateral wall is equipped with 3-pin signal connector, angle sensor and 3-pin signal connector electric connection, be equipped with the signal line on the 3-pin signal connector, 3-pin signal connector passes through the signal line and is connected with the host computer, and angle sensor's signal is drawn forth by 3-pin signal connector and passes through the signal line and give higher level signal processing module to carry out the processing analysis.
Furthermore, the cross section of the sensor input shaft is arranged in a D shape, a through hole is formed in the center of the stator disc, a clamping hole is formed in the center of the rotor disc, the sensor input shaft penetrates through the through hole in a rotating mode and is clamped in the clamping hole, the cross section of the clamping hole is arranged in a D shape, the sensor input shaft is in interference fit with the clamping hole, and the sensor input shaft and the rotor disc are convenient to drive through a half shaft with the D-shaped cross section.
Further, equidistant align to grid is equipped with the multiunit keyway on the shell lateral wall, and the keyway distributes around shell axis circumference array, equidistant being equipped with the multiunit locating pin on the stator disc circumference lateral wall, the quantity of locating pin equals with keyway quantity, locating pin and keyway one-to-one, multiunit keyway and locating pin be convenient for better realization to stator disc's fixed.
Further, one side that stator disc was kept away from to the locating pin is equipped with the limiting plate, and the limiting plate is located the shell and just the limiting plate touches with the laminating of shell outer wall and meets, and the limiting plate is convenient for carry on spacingly to stator disc, is convenient for promote locating pin and stator disc simultaneously and slide along the keyway.
Furthermore, the shell is made of elastic rubber materials, the toughness is strong, the outer wall of the nut is convenient to attach, and the side length of the inner wall of the shell is smaller than or equal to that of the nut, so that the shell and the nut form interference fit or transition fit, and the shell and the nut are relatively static.
Preferably, the length of side of the inner wall of the shell is equal to the length of side of the nut, the nut and the shell form interference fit, the nut can freely slide in the shell, the inner surface of the shell is attached to the surface of the nut, the nut is clamped in the shell and cannot rotate, and the shell and the nut move synchronously, so that synchronous movement of the stator disc and the nut is achieved, and the detection accuracy is improved conveniently.
Further, the angle sensor is one of an analog angle sensor and a digital signal angle sensor.
Furthermore, a film coating layer is arranged on one side, away from the rotor disc, of the industrial double-sided adhesive layer, and the film coating layer protects and isolates the industrial double-sided adhesive layer.
The invention with the structure has the following beneficial effects: the bolt looseness detection device adaptive to the bolts with different lengths is simple in structure, reasonable in design and simple and convenient to operate, obtains the looseness state of the bolts and converts the looseness state into an electric signal or a digital signal by converting the relative motion of the bolts and the nuts into the relative motion of a rotor disc and a stator disc in the device, transmits the electric signal or the digital signal to an upper computer through a signal wire and a 3-pin signal connector, and analyzes and processes the electric signal or the digital signal through a signal processing technology, so that the detection precision can be greatly improved, the working efficiency of bolt looseness can be effectively detected, the cost is low, and the bolt looseness detection device is particularly suitable for large-scale; the invention has the advantages that the stator disc and the rotor disc are driven to rotate by the key groove of the sliding sleeve and the positioning pin to adjust the height from the rotor disc to the bottom of the shell, so that the effect of adapting to bolts with different lengths is achieved.
Drawings
FIG. 1 is a schematic structural view of a bolt looseness detection device adapted to bolts of different lengths in accordance with the present invention;
FIG. 2 is a schematic perspective view of a bolt looseness detection device adapted to bolts of different lengths according to the present invention;
FIG. 3 is a schematic view of a relative movement mechanism and an angle sensor combination structure of the bolt looseness detection device adapted to bolts of different lengths in the invention;
FIG. 4 is a schematic structural diagram of a relative movement mechanism of the bolt looseness detection device adapted to bolts of different lengths according to the present invention;
FIG. 5 is a schematic structural view of a rotor disc of the bolt looseness detecting device adapted to bolts of different lengths according to the present invention;
fig. 6 is a schematic view of a nut and bolt combination structure to be detected of the bolt looseness detection device adapted to bolts of different lengths.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings: 1. bolt terminal surface, 2, nut surface, 3, locating pin, 4, sensor input shaft, 5, angle sensor, 6, shell, 7, rotor disc, 8, industrial grade double-sided adhesive layer, 9, shell internal surface, 10, 3-pin signal connector, 11, keyway, 12, bolt, 13, nut, 14, stator disc, 15, limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the bolt looseness detecting device adapted to bolts with different lengths comprises a relative movement mechanism, a housing 6 and an angle sensor 5, wherein the housing 6 is arranged in a regular hexagon hollow cavity, an installation through hole is formed in one side of the housing 6, the relative movement mechanism comprises a stator disc 14 and a rotor disc, a key groove 11 is formed in the side wall of the housing 6, a positioning pin 3 is arranged on the circumferential side wall of the stator disc 14, the positioning pin 3 is arranged in the key groove 11 in a sliding and clamping manner, the stator disc 14 is arranged in the housing 6 in a sliding and clamping manner through the positioning pin 3 and the key groove 11, the angle sensor 5 is arranged on one side, far away from the installation through hole, of the stator disc 14, a sensor input shaft 4 is arranged on the angle sensor 5 in a penetrating manner, the rotor disc 7 is rotatably arranged on the central shaft part, close to the installation through hole, of the stator, the side wall of one side of the rotor disc 7, which is far away from the stator disc 14, is provided with an industrial double-faced adhesive layer 8; 6 lateral walls of shell are equipped with 3-pin signal connector 10, and angle sensor 5 and 3-pin signal connector 10 electric connection, be equipped with the signal line on the 3-pin signal connector 10, 3-pin signal connector 10 passes through the signal line and is connected with the host computer.
The cross section of the sensor input shaft 4 is arranged in a D shape, a through hole is formed in the center of the stator disc 14, a clamping hole is formed in the center of the rotor disc 7, the sensor input shaft 4 penetrates through the through hole in a clamping mode and is arranged in the clamping hole in a clamping mode, and the sensor input shaft 4 is in interference fit with the clamping hole; a plurality of groups of key grooves 11 are uniformly arranged on the side wall of the shell 6 at equal intervals, the key grooves 11 are distributed in a circumferential array around the axis of the shell 6, a plurality of groups of positioning pins 3 are arranged on the circumferential side wall of the stator disc 14 at equal intervals, and the number of the positioning pins 3 is equal to that of the key grooves 11; a limiting plate is arranged on one side, away from the stator disc 14, of the positioning pin 3, the limiting plate is arranged outside the shell 6, and the limiting plate is attached to and in contact with the outer wall of the shell 6; the shell 6 is made of elastic rubber, the side length of the inner wall of the shell 6 is equal to that of the nut 13, and the nut 13 and the shell 6 are in interference fit; the angle sensor 5 is one of an analog angle sensor 5 and a digital signal angle sensor 5; and a film coating layer is arranged on one side, far away from the rotor disc 7, of the industrial double-sided adhesive layer 8.
When the device is used specifically, the film coating layer is firstly removed from the industrial-grade double-sided adhesive layer 8, then the mounting through hole of the shell 6 is aligned with the bolt 12 to be detected and the nut 13 to be detected, the shell 6 is sleeved outside the detecting bolt 12 and the nut, then the lower wall of the shell 6 is sleeved on the nut 13 to be detected, the inner surface of the shell 6 is fully contacted with the outer surface of the nut 13 to be detected, and the shell 6 and the nut 13 to be detected are relatively static and keep a consistent motion state; then, the positioning pin 3 on the stator disc 14 is pushed towards the end face direction of the bolt 12 to be detected by force, the positioning pin 3 drives the stator disc 14 to slide downwards along the key slot 11 to be close to the bolt end face 1 so as to drive the rotor disc 7 to be close to the bolt end face 1, the industrial-grade double-faced adhesive layer 8 is fully contacted with the bolt end face 1, the industrial-grade double-faced adhesive layer 8 is enabled to firmly connect the bolt end face 1 and the rotor disc 7, the positioning pin 3 is stopped to be pressed downwards after the rotor disc 7 is firmly connected with the bolt end face 1, the rotor disc 7 and the bolt synchronously move and are relatively static at the moment, further, the relative rotation of the bolt 12 to be detected and the nut 13 to be detected is converted into the relative rotation of the stator disc 14 and the rotor disc 7, when the bolt 12 to be detected is loosened, the, the angle sensor 5 inputs the rotation angle of the rotor disc 7 through the sensor input shaft 4, namely, the relative movement angle of the bolt 12 to be detected and the nut 13 to be detected, further measures the relative movement condition of the bolt 12 to be detected and the nut 13 to be detected, converts the relative rotation into an electric signal or a digital signal, and then transmits the obtained signal of the angle sensor 5 to an upper computer through a signal wire and a 3-pin signal connector 10 for signal processing.
The invention can be used for detecting the loosening of bolts with different lengths in large-scale bolt connection and fastening mechanisms such as wind power equipment, power grid equipment, building construction, track equipment and the like, and multiple experiments prove that the invention can detect the loosening of the bolts at 0.5 DEG by means of low-pass filtering and step signal detection.
The design, manufacture, installation and deployment of the invention are connected by signal cables, are only based on the shapes of the installed bolts and nuts, do not depend on the structure of a specific fastening mechanism, and have strong universality.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a not hard up detection device of bolt of different length bolts of adaptation which characterized in that: the device comprises a relative movement mechanism, a shell and an angle sensor, wherein the shell is a regular hexagon hollow cavity, one side of the shell is provided with an installation through hole, the relative movement mechanism comprises a stator disc and a rotor disc, the side wall of the shell is provided with a key groove, the circumferential side wall of the stator disc is provided with a positioning pin, the positioning pin is arranged in the key groove in a sliding clamping manner, the stator disc is arranged in the shell in a sliding clamping manner through the positioning pin and the key groove, the angle sensor is arranged on one side, away from the installation through hole, of the stator disc, the angle sensor is provided with a sensor input shaft, the rotor disc is rotatably arranged on a central shaft part, close to the installation through hole, of the stator disc, the sensor input shaft penetrates through the stator disc and is connected with; the shell lateral wall is equipped with 3-pin signal connector, angle sensor and 3-pin signal connector electric connection, be equipped with the signal line on the 3-pin signal connector.
2. The bolt looseness detecting device of claim 1, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: the cross section of the sensor input shaft is arranged in a D-shaped section, a through hole is formed in the center of the stator disc, a clamping hole is formed in the center of the rotor disc, the sensor input shaft rotates to penetrate through the through hole in a clamping mode and is arranged in the clamping hole, and the sensor input shaft is in interference fit with the clamping hole.
3. The bolt looseness detecting device of claim 1, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: equidistant align to arrange on the shell lateral wall is equipped with the multiunit keyway, and the keyway is around shell axis circumference array distribution, equidistant being equipped with the multiunit locating pin on the stator disc circumference lateral wall, the quantity of locating pin equals with keyway quantity.
4. The bolt looseness detecting device of claim 1, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: and a limiting plate is arranged on one side of the positioning pin, which is far away from the stator disc, the limiting plate is arranged outside the shell, and the limiting plate is in contact joint with the outer wall of the shell in a laminating manner.
5. The bolt looseness detecting device of claim 1, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: the shell is made of elastic rubber materials, and the side length of the inner wall of the shell is smaller than or equal to that of the nut.
6. The bolt looseness detecting device of claim 5, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: the side length of the inner wall of the shell is equal to that of the nut.
7. The bolt looseness detecting device of claim 1, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: the angle sensor is one of an analog angle sensor and a digital signal angle sensor.
8. The bolt looseness detecting device of claim 1, wherein the bolt looseness detecting device is adapted to bolts with different lengths, and is characterized in that: and a film coating layer is arranged on one side, far away from the rotor disc, of the industrial double-sided adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443515.9A CN113092098A (en) | 2021-04-23 | 2021-04-23 | Bolt looseness detection device adaptive to bolts with different lengths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443515.9A CN113092098A (en) | 2021-04-23 | 2021-04-23 | Bolt looseness detection device adaptive to bolts with different lengths |
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|---|---|
| CN113092098A true CN113092098A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110443515.9A Pending CN113092098A (en) | 2021-04-23 | 2021-04-23 | Bolt looseness detection device adaptive to bolts with different lengths |
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| CN (1) | CN113092098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838651A (en) * | 2022-04-02 | 2022-08-02 | 北京理工大学 | Bolt looseness monitoring device based on friction nanometer generator principle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140131225A (en) * | 2013-05-03 | 2014-11-12 | 한국철도기술연구원 | Release detection apparatus for bolt and nut using elastic contact sensor |
| CN207636057U (en) * | 2018-01-02 | 2018-07-20 | 京东方科技集团股份有限公司 | A kind of bolt looseness detection device |
| CN108680191A (en) * | 2018-06-27 | 2018-10-19 | 南昌大学 | A kind of device that bolt looseness is monitored |
| CN110231158A (en) * | 2019-07-05 | 2019-09-13 | 江苏轶一电力科技有限公司 | A kind of steel tower bolt looseness monitoring device |
| CN110285955A (en) * | 2019-07-19 | 2019-09-27 | 贵州北盘江电力股份有限公司董箐分公司 | Top cover of hydraulic turbine set bolt and nut loosens detection device and method |
| CN213632633U (en) * | 2020-11-25 | 2021-07-06 | 白雪 | Bolt looseness detection device |
-
2021
- 2021-04-23 CN CN202110443515.9A patent/CN113092098A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140131225A (en) * | 2013-05-03 | 2014-11-12 | 한국철도기술연구원 | Release detection apparatus for bolt and nut using elastic contact sensor |
| CN207636057U (en) * | 2018-01-02 | 2018-07-20 | 京东方科技集团股份有限公司 | A kind of bolt looseness detection device |
| CN108680191A (en) * | 2018-06-27 | 2018-10-19 | 南昌大学 | A kind of device that bolt looseness is monitored |
| CN110231158A (en) * | 2019-07-05 | 2019-09-13 | 江苏轶一电力科技有限公司 | A kind of steel tower bolt looseness monitoring device |
| CN110285955A (en) * | 2019-07-19 | 2019-09-27 | 贵州北盘江电力股份有限公司董箐分公司 | Top cover of hydraulic turbine set bolt and nut loosens detection device and method |
| CN213632633U (en) * | 2020-11-25 | 2021-07-06 | 白雪 | Bolt looseness detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838651A (en) * | 2022-04-02 | 2022-08-02 | 北京理工大学 | Bolt looseness monitoring device based on friction nanometer generator principle |
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Application publication date: 20210709 |
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