CN114893492B - A intelligent gasket for real-time supervision bolt pretightning force changes - Google Patents
A intelligent gasket for real-time supervision bolt pretightning force changes Download PDFInfo
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- CN114893492B CN114893492B CN202210313365.4A CN202210313365A CN114893492B CN 114893492 B CN114893492 B CN 114893492B CN 202210313365 A CN202210313365 A CN 202210313365A CN 114893492 B CN114893492 B CN 114893492B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 86
- 230000008093 supporting effect Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000003313 weakening effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
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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
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
- F16B31/028—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load with a load-indicating washer or washer assembly
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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
- G01L5/243—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 using washers
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- 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)
- Gasket Seals (AREA)
Abstract
The application discloses an intelligent gasket for monitoring bolt pretightening force change in real time, and relates to the technical field of monitoring. According to the application, the deformation of the gasket is limited through the limit slot and the limit insert which are mutually inserted, so that the two end faces of the gasket are always parallel in the deformation process, the side face of the gasket is deformed by uniform deformation, the effectiveness of monitoring data of the monitoring part is further improved, the monitoring efficiency of related technicians is improved, the sliding rod is supported by the telescopic rod matched with the second limit hole, the monitoring part fixedly installed on the outer side of the sliding rod is always positioned in the middle part of the gasket, the monitoring part is positioned at the position with the maximum deformation of the gasket at all times, and the monitoring effect of the monitoring part is improved.
Description
Technical Field
The application relates to the technical field of monitoring, in particular to an intelligent gasket for monitoring bolt pretightening force change in real time.
Background
The bolt is a mechanical part for connecting and fastening two parts with holes, and is one of the most common mechanical parts in our daily life because of the characteristics of low cost and strong practicability, thereby playing an irreplaceable role. In the process of screwing the bolt, a force along the axial line direction of the bolt is generated between the bolt and the connected piece due to the action of the screwing moment, and the force is called bolt pretightening force. The pretightening force can improve the reliability, the anti-loosening capability and the fatigue strength of the bolts, and the tightness and the rigidity of the connection are enhanced. However, too high or too low a bolt preload can result in failure of the part connection, resulting in unnecessary loss. Therefore, the bolt pretightening force must be monitored, so that the pretightening force loosening condition is grasped, the connection stability and reliability of the bolts are ensured, and unnecessary loss caused by loosening of the bolts is reduced.
The existing gasket for monitoring bolt pretightening force change is mostly made of rubber materials, no effective supporting structure exists, in the process of installing the matched bolt, the bolt pretightening force is affected by the action of the bolt tightening force, irregular deformation can occur, the bolt pretightening force is calculated through the irregular deformation, the monitoring difficulty is increased, the monitoring efficiency is reduced, and meanwhile the existing monitoring device is mostly fixedly installed inside the gasket, and the deformation quantity of the position where the deformation of the gasket is maximum cannot be monitored in real time.
Disclosure of Invention
The application aims to provide an intelligent gasket for monitoring bolt pretightening force change in real time, deformation of the gasket is limited through a limiting slot and a limiting insert which are mutually inserted, so that two end faces of the gasket are always parallel in the deformation process, further, the side faces of the gasket are deformed by uniform deformation, the effectiveness of monitoring data of monitoring components is further improved, the monitoring efficiency of related technicians is improved, a telescopic rod is matched with a second limiting hole to provide support for a sliding rod, so that the monitoring components fixedly installed on the outer side of the sliding rod are always positioned in the middle part of the gasket, the monitoring components are always positioned at the position of the maximum deformation of the gasket, and the monitoring effect of the monitoring components is improved.
In order to achieve the above purpose, the present application provides the following technical solutions: the intelligent gasket comprises a gasket body, wherein a supporting part and a monitoring part which are connected are arranged in the gasket body, a first weakening groove is formed in the inner peripheral ring and the outer peripheral ring of the gasket body, two first cavities and two second cavities are formed in the gasket body, a third cavity is formed in the gasket body, the third cavity is located in the middle of the two second cavities, the third cavity is located in the middle of the two first cavities, a plurality of communicating grooves are formed in two sides of the third cavity in an annular array, the second cavity, the third cavity and the communicating grooves are communicated, a first limiting groove and a third limiting groove are formed in the gasket body, the third cavity is located in the middle of the first limiting groove and the third limiting groove, two groups of second limiting grooves communicated with the first limiting groove are formed in one side of the first limiting groove in an annular array, and two groups of fourth limiting grooves communicated with the third limiting groove are formed in one side of the third limiting groove in an annular array; the support component is used for increasing the support strength of the gasket, and the monitoring component is used for monitoring the deformation quantity of the gasket in real time.
Preferably, the support component comprises a first support ring fixedly installed in the third limit groove, a plurality of limit slots fixedly sleeved with the fourth limit groove are installed on one side of the first support ring in an annular array, piezoelectric sheets are fixedly installed in the first limit groove, and a plurality of limit inserting sheets fixedly sleeved with the second limit groove are installed on one side of the piezoelectric sheets in an annular array.
Preferably, the first supporting ring, the limiting slot and the gasket are vulcanized integrally, and the piezoelectric sheet, the limiting inserting sheet and the gasket are vulcanized integrally.
Preferably, the limiting inserting piece is inserted into the limiting inserting groove, two second limiting holes are formed in one side of each of the two second cavities, and sliding rods are sleeved in the two second limiting holes in a sliding mode.
Preferably, the monitoring component comprises a laser diode, an inverted telescope and a diaphragm, wherein the same laser diode, the inverted telescope and the diaphragm are fixedly arranged on the outer sides of the two sliding rods, the inverted telescope is positioned between the laser diode and the diaphragm, a triode and a battery are fixedly arranged on one side of the first supporting ring, piezoelectric ceramic plates are arranged on the inner wall of the limiting slot, and the triode, the battery, the laser diode and the piezoelectric ceramic plates are electrically connected and form a closed loop which is connected in series.
Preferably, the inner walls of two sides of the third cavity are provided with a plurality of strain gauges in an annular array, the strain gauges are electrically connected with the same battery, a hose penetrating through and extending into the third cavity is fixedly sleeved on one side of the gasket, one end of each strain gauge is fixedly connected with a data transmission line, and the data transmission lines pass through the third cavity and the hose and extend out of the gasket.
Preferably, the triode is a 9014 triode, and the b pole of the triode is electrically connected with one end of the piezoelectric ceramic plate
Preferably, two first limiting holes are formed in one side of the third limiting groove, telescopic rods penetrating through and extending into the third cavity are fixedly sleeved in the two first limiting holes respectively, and one ends of the two telescopic rods are fixedly sleeved with the two sliding rods respectively.
In summary, the application has the technical effects and advantages that:
the application has reasonable structure, when the bolt is screwed, one side of the gasket is extruded by the screw cap, the deformation of the gasket is increased through the first weakening groove, the first cavity, the second cavity and the third cavity which are arranged in the gasket, so that the monitoring part can monitor, the monitoring efficiency of the monitoring part is improved, the end face of the gasket is supported by the supporting part, the irregular deformation of the gasket in the extrusion process is prevented, the monitoring difficulty of the pretightening force of the bolt is reduced, and the accuracy and the effectiveness of the monitoring data are improved;
according to the application, one side of the gasket is supported by the piezoelectric sheet, the other side of the gasket is supported by the first support ring, and the deformation of the gasket is limited by the limit slot and the limit insert which are inserted mutually, so that the two end faces of the gasket are always kept parallel in the deformation process, the side face of the gasket is deformed by uniform deformation, the effectiveness of monitoring data of the monitoring component is further improved, and the monitoring efficiency of related technicians is improved;
according to the application, the telescopic rod is matched with the second limiting hole to provide support for the sliding rod, so that the monitoring component fixedly installed on the outer side of the sliding rod is always positioned at the middle part of the gasket, the monitoring component is positioned at the position with the largest deformation amount of the gasket at the moment, and the monitoring effect of the monitoring component is improved;
according to the application, when the bolt is installed, one end of the gasket is extruded by the bolt through the nut, the piezoelectric sheet is extruded by the gasket to generate an electric signal, the electric signal is transmitted to the limiting slots connected with the piezoelectric sheet in an inserting mode, at the moment, the limiting slots are switched on and powered on in a serial closed loop, so that the laser diode is powered on to emit laser, the beam is expanded and collimated through the inverted telescope, a strong laser beam is formed immediately after the beam expansion and collimation passes through the diaphragm, the deformation condition of the gasket can be clearly observed through the strong laser beam, and the pretightening force of the gasket is monitored in real time.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a three-dimensional structure of an intelligent gasket for monitoring bolt pretightening force changes in real time;
FIG. 2 is a schematic cross-sectional view of an intelligent gasket for monitoring bolt pretension variation in real time;
FIG. 3 is a schematic view of a partially cut-away perspective structure of the assembled gasket, support member, and detection member;
FIG. 4 is a schematic view of a partially cut-away perspective structure of an intelligent gasket for monitoring bolt pretension variation in real time;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4A;
fig. 6 is a schematic view of a partially cut-away perspective structure of a gasket.
In the figure: 1. a gasket; 2. a first limit groove; 3. the second limit groove; 4. a third limit groove; 5. a fourth limit groove; 6. a first weakening groove; 7. a first cavity; 8. a second cavity; 9. a third cavity; 10. a communication groove; 11. a first limiting hole; 12. a second limiting hole; 13. a first support ring; 14. a limit slot; 15. a piezoelectric sheet; 16. limiting inserting pieces; 17. a triode; 18. a battery; 19. a telescopic rod; 20. a slide bar; 21. a laser diode; 22. inverting the telescope; 23. a diaphragm; 24. a strain gage; 25. and (3) a hose.
Description of the embodiments
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Examples: referring to the intelligent gasket for monitoring bolt pretightening force change in real time shown in fig. 1-6, the intelligent gasket comprises a gasket 1, a supporting part and a monitoring part which are connected are installed in the gasket 1, a first weakening groove 6 is formed in the inner peripheral ring and the outer peripheral ring of the gasket 1, two first cavities 7 and second cavities 8 are formed in the gasket 1, a third cavity 9 is formed in the gasket 1, the third cavity 9 is located in the middle of the two second cavities 8, the third cavity 9 is located in the middle of the two first cavities 7, a plurality of communicating grooves 10 are formed in two sides of the third cavity 9 in an annular array, the second cavities 8, the third cavity 9 are communicated with the communicating grooves 10, a first limiting groove 2 and a third limiting groove 4 are formed in the gasket 1, the third cavity 9 is located in the middle of the first limiting groove 2 and the third limiting groove 4, two groups of second limiting grooves 3 communicated with the first limiting groove 2 are formed in an annular array, and two groups of fourth limiting grooves 5 communicated with the third limiting groove 4 are formed in one side of the third limiting groove 4; the support component is used for increasing the support strength of the gasket 1, and the monitoring component is used for monitoring the deformation quantity of the gasket 1 in real time.
When the bolt is screwed down, one side of the gasket 1 is extruded by the screw cap, the deformation amount of the gasket 1 is increased through a first weakening groove 6, a first cavity 7, a second cavity 8 and a third cavity 9 which are formed in the gasket 1, so that the monitoring component monitors, the monitoring efficiency of the monitoring component is improved, the end face of the gasket 1 is supported by the supporting component, the gasket 1 is prevented from irregularly deforming in the extrusion process, the monitoring difficulty of the pretightening force of the bolt is reduced, and the accuracy and the effectiveness of monitoring data are improved.
In this embodiment, the supporting component includes a first supporting ring 13 fixedly installed in the third limiting groove 4, a plurality of limiting slots 14 fixedly sleeved with the fourth limiting groove 5 are installed on one side of the first supporting ring 13 in an annular array, a piezoelectric sheet 15 is fixedly installed in the first limiting groove 2, a plurality of limiting inserting pieces 16 fixedly sleeved with the second limiting groove 3 are installed on one side of the piezoelectric sheet 15 in an annular array, and the limiting inserting pieces 16 are inserted into the limiting slots 14.
Support one side of gasket 1 through piezoelectric thin slice 15, support the opposite side of gasket 1 through first support ring 13, limit slot 14 and spacing inserted sheet 16 through pegging graft limit the deformation of gasket 1 for the both ends face of gasket 1 remains parallel throughout in the deformation process, and then makes the side of gasket 1 take place to warp with even deformation volume, has further improved monitoring component monitoring data's validity, improves relevant technical personnel's monitoring efficiency.
In this embodiment, the first supporting ring 13, the limiting slot 14 and the gasket 1 are vulcanized integrally, the piezoelectric sheet 15, the limiting insert 16 and the gasket 1 are vulcanized integrally, so that the gasket 1 is prevented from being separated from the supporting component after being extruded, and the supporting effect of the supporting component on the gasket 1 is further improved.
In this embodiment, two second limiting holes 12 are formed on one side of each of the two second cavities 8, the sliding rods 20 are sleeved in the two second limiting holes 12 in a sliding manner, the sliding rods 20 are limited in a sliding sleeved manner, the sliding rods 20 are deflected by the inner walls on two sides of the third cavity 9, which is prevented from deforming, and the supporting stability of the sliding rods 20 is improved.
In this embodiment, the monitoring component includes the same laser diode 21, inverted telescope 22 and diaphragm 23 fixedly mounted on the outer sides of two slide bars 20, inverted telescope 22 is located between laser diode 21 and diaphragm 23, one side of first support ring 13 is fixedly mounted with triode 17 and battery 18, triode 17, battery 18, laser diode 21 and a plurality of spacing slots 14 are electrically connected and form a series closed loop, a plurality of strain gauges 24 are arranged on the inner walls of two sides of third cavity 9 in an annular array, a plurality of strain gauges 24 are electrically connected with the same battery 18, triode 17 is a 9014 triode, and the b pole of triode 17 is electrically connected with one end of the piezoelectric ceramic plate.
When the bolt is installed, one end of the gasket 1 is extruded through the nut, the piezoelectric sheet 15 is extruded through the gasket 1, the piezoelectric sheet 15 is extruded to generate an electric signal, the electric signal is transmitted to the limiting slots 14 connected with the piezoelectric sheet 15 in an inserting mode, at the moment, the limiting slots 14 are switched on and off in a series closed loop, the series loop is electrified, the laser diode 21 is electrified to emit laser, the beam is expanded and collimated through the inverted telescope 22, a strong laser beam is formed immediately after the beam expansion and collimation passes through the diaphragm 23, the deformation condition of the gasket 1 can be clearly observed through the strong laser beam, and accordingly the pretightening force of the gasket 1 is monitored in real time.
The inner walls on two sides of the third cavity 9 are intermittently connected by the communication groove 10, so that the deformation space of the inner walls on two sides of the third cavity 9 is increased, the supporting strength of the two sides of the third cavity 9 is reduced, the deformation quantity of the inner walls on two sides of the third cavity 9 is increased, and the monitoring effect of the strain gauge 24 is further improved.
In this embodiment, two first limiting holes 11 are formed in one side of the third limiting groove 4, two telescopic rods 19 penetrating through and extending into the third cavity 9 are fixedly sleeved in the two first limiting holes 11 respectively, one ends of the two telescopic rods 19 are fixedly sleeved with two sliding rods 20 respectively, the second limiting holes 12 are matched with the telescopic rods 19 to support the sliding rods 20, so that a monitoring part fixedly mounted on the outer side of the sliding rods 20 is always located in the middle of the gasket 1, the monitoring part is located at the position with the largest deformation of the gasket 1 at any time, and the monitoring effect of the monitoring part is improved.
In this embodiment, a hose 25 penetrating and extending into the third cavity 9 is fixedly sleeved on one side of the gasket 1, one ends of the strain gauges 24 are fixedly connected with a data transmission line diagram, which is not drawn, the data transmission line diagram is not drawn, passes through the third cavity 9 and the hose 25 and extends out of the gasket 1, the other end of the data transmission line is connected with a monitoring instrument, real-time monitoring data of the strain gauges 24 are directly observed, and reliability of monitoring results is further improved through data comparison of the strain gauges 24.
The working principle of the application is as follows:
when the bolts are installed, the bolts extrude one end of the gasket through the nuts, the piezoelectric thin sheet is extruded through the gasket, electric signals are generated by extrusion of the piezoelectric thin sheet, the signals are transmitted to the limiting slots connected with the piezoelectric thin sheet in an inserting mode, at the moment, the limiting slots are switched on and off in a series closed loop, the series loop is electrified, the laser diode is electrified to emit laser, the beam is expanded and collimated through the inverted telescope, a strong laser beam is formed immediately after the beam expansion and collimation passes through the diaphragm, deformation conditions of the gasket can be clearly observed through the strong laser beam, and accordingly pretightening force of the gasket is monitored in real time;
when the bolt is screwed down, one side of the gasket is extruded by the nut, and the deformation of the gasket is increased through the first weakening groove, the first cavity, the second cavity and the third cavity which are formed in the gasket, so that the monitoring part can monitor, the monitoring efficiency of the monitoring part is improved, the end face of the gasket is supported by the supporting part, the irregular deformation of the gasket in the extrusion process is prevented, the monitoring difficulty of the bolt pretightening force is reduced, and the accuracy and the effectiveness of monitoring data are improved;
one side of the gasket is supported by the piezoelectric sheet, the other side of the gasket is supported by the first support ring, and deformation of the gasket is limited by the limit slot and the limit insert which are mutually inserted, so that two end faces of the gasket are always kept parallel in the deformation process, further, the side face of the gasket is deformed by uniform deformation, the effectiveness of monitoring data of the monitoring part is further improved, and the monitoring efficiency of related technicians is improved;
support the slide bar through telescopic link cooperation second spacing hole to the monitoring part of slide bar outside fixed mounting is located the middle part of gasket all the time, so that the monitoring part is located the biggest position department of gasket deformation volume constantly, improves the monitoring effect of monitoring part.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present application, and although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present application.
Claims (8)
1. An intelligent gasket for monitoring bolt pretightning force changes in real time, includes gasket (1), its characterized in that: the novel high-speed limit device comprises a gasket (1), wherein a supporting part and a monitoring part which are connected are arranged in the gasket (1), a first weakening groove (6) is formed in the inner peripheral ring and the outer peripheral ring of the gasket (1), two first cavities (7) and second cavities (8) are formed in the gasket (1), a third cavity (9) is formed in the gasket (1), the third cavity (9) is located in the middle of the two second cavities (8), the third cavity (9) is located in the middle of the two first cavities (7), a plurality of communicating grooves (10) are formed in two sides of the third cavity (9) in an annular array, the second cavities (8), the third cavities (9) are communicated with the communicating grooves (10), a first limit groove (2) and a third limit groove (4) are formed in the gasket (1), the third cavity (9) is located in the middle of the two second cavities (8), the first side of the third cavity (9) is located in the middle of the second cavity (8), and the second side of the third cavity (9) is communicated with the first limit groove (4), and the second side of the third cavity (4) is provided with the annular array (4);
the support component is used for increasing the support strength of the gasket (1), and the monitoring component is used for monitoring the deformation of the gasket (1) in real time.
2. An intelligent gasket for monitoring bolt pretightening force variation in real time according to claim 1, wherein: the supporting component comprises a first supporting ring (13) fixedly installed in a third limiting groove (4), a plurality of limiting slots (14) fixedly sleeved with the fourth limiting groove (5) are installed on one side of the first supporting ring (13) in an annular array, piezoelectric sheets (15) are fixedly installed in the first limiting groove (2), and a plurality of limiting inserting pieces (16) fixedly sleeved with the second limiting groove (3) are installed on one side of the piezoelectric sheets (15) in an annular array.
3. An intelligent gasket for monitoring bolt pretension variation in real time according to claim 2, characterized in that; the first support ring (13), the limiting slot (14) and the gasket (1) are vulcanized integrally, and the piezoelectric sheet (15), the limiting inserting sheet (16) and the gasket (1) are vulcanized integrally.
4. An intelligent gasket for monitoring bolt pretightening force variation in real time according to claim 2, wherein: the limiting inserting piece (16) is inserted into the limiting inserting groove (14), two second limiting holes (12) are formed in one side of each of the two second cavities (8), and sliding rods (20) are sleeved in the two second limiting holes (12) in a sliding mode.
5. The intelligent gasket for monitoring bolt pretightening force variation in real time according to claim 4, wherein: the monitoring component comprises a laser diode (21), an inverted telescope (22) and a diaphragm (23) which are fixedly arranged on the outer sides of two sliding rods (20), the inverted telescope (22) is positioned between the laser diode (21) and the diaphragm (23), a triode (17) and a battery (18) are fixedly arranged on one side of a first supporting ring (13), piezoelectric ceramic plates are arranged on the inner wall of a limiting slot (14), and the triode (17), the battery (18), the laser diode (21) and a plurality of piezoelectric ceramic plates are electrically connected and form a closed loop which is connected in series.
6. The intelligent gasket for monitoring bolt pretightening force variation in real time according to claim 5, wherein: the inner walls of two sides of the third cavity (9) are provided with a plurality of strain gauges (24) in an annular array, the strain gauges (24) are electrically connected with the same battery (18), a hose (25) penetrating through and extending into the third cavity (9) is fixedly sleeved on one side of the gasket (1), one end of each strain gauge (24) is fixedly connected with a data transmission line, and the data transmission lines pass through the third cavity (9) and the hose (25) and extend out of the gasket (1).
7. The intelligent gasket for monitoring bolt pretightening force variation in real time according to claim 5, wherein: the triode (17) is a 9014 triode, and the b pole of the triode (17) is electrically connected with one end of the piezoelectric ceramic plate.
8. The intelligent gasket for monitoring bolt pretightening force variation in real time according to claim 4, wherein: two first limiting holes (11) are formed in one side of the third limiting groove (4), telescopic rods (19) penetrating through and extending into the third cavity (9) are fixedly sleeved in the two first limiting holes (11) respectively, and one ends of the two telescopic rods (19) are fixedly sleeved with the two sliding rods (20) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210313365.4A CN114893492B (en) | 2022-03-28 | 2022-03-28 | A intelligent gasket for real-time supervision bolt pretightning force changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210313365.4A CN114893492B (en) | 2022-03-28 | 2022-03-28 | A intelligent gasket for real-time supervision bolt pretightning force changes |
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| Publication Number | Publication Date |
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| CN114893492A CN114893492A (en) | 2022-08-12 |
| CN114893492B true CN114893492B (en) | 2023-08-11 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116952444B (en) * | 2023-09-20 | 2023-12-12 | 江天科技有限公司 | Intelligent bolt and nut gasket sensor |
| CN118150022B (en) * | 2024-05-08 | 2024-10-11 | 南京航空航天大学 | Real-time identification method for axial load of bolt based on fiber bragg grating strain sensing |
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| CN203629737U (en) * | 2013-12-25 | 2014-06-04 | 武汉科技大学 | Bolt state monitoring sensor |
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| CN114112166A (en) * | 2021-12-17 | 2022-03-01 | 中国航空工业集团公司北京航空精密机械研究所 | Gasket, pressure detection device and equipment |
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| AU2021103206A4 (en) * | 2021-06-08 | 2021-08-05 | Hangzhou Hongliang Technology Co., Ltd | A Sensor Type Elastic Washer For Dynamic Monitoring Of Screw Connection Preload |
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