CN113530957B - Nut anti-loosening gasket assembly and bolt tightness wireless monitoring system thereof - Google Patents
Nut anti-loosening gasket assembly and bolt tightness wireless monitoring system thereof Download PDFInfo
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- CN113530957B CN113530957B CN202110822331.3A CN202110822331A CN113530957B CN 113530957 B CN113530957 B CN 113530957B CN 202110822331 A CN202110822331 A CN 202110822331A CN 113530957 B CN113530957 B CN 113530957B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
- 238000004891 communication Methods 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims 1
- 210000005069 ears Anatomy 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 14
- 238000003825 pressing Methods 0.000 abstract description 6
- 239000011888 foil Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 239000012212 insulator Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000013142 basic testing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Bolts, Nuts, And Washers (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a snailThe nut anti-loosening gasket assembly comprises an upper layer of gasket and a lower layer of gasket, the lower layer of gasket is provided with a side lug, and the side lug comprises an elastic arm and a convex block matched with the groove; deflection epsilon of outer side surface of elastic arm 0 Height d after pressing down with the bump 0 The elastic arm is in a monotonous linear relation, the bending deformation of the outer side surface of the elastic arm can provide an additional pretightening force for connection, the acting force between the thread pairs is increased, the end surface friction force of the thread pairs is further increased, and the function of preventing the bolt connection from loosening in a severe environment is achieved; bolt elasticity wireless monitoring system includes power module, communication module and a plurality of foil gage, realizes monitoring bolted connection not hard up purpose through the deflection of monitoring elastic arm lateral surface, and the foil gage carries out remote transmission through wireless communication module with the information of the deflection of the elastic arm lateral surface of gathering, has realized remote monitoring's purpose, has enlarged monitoring range, has improved monitoring efficiency.
Description
Technical Field
The invention relates to the field of looseness prevention of fasteners, in particular to a nut looseness prevention gasket assembly and a wireless bolt tightness monitoring system thereof.
Background
The bolt connection is not only applied to industries such as military, medical treatment, machinery and electric power, but also widely used in life. It has the advantages of simple structure, convenient assembly and disassembly, reliable connection and the like. The connection state of the bolt connection directly affects the use of the connected equipment, so the reliability and stability of the bolt connection are important. In practical engineering application, the bolt connection looseness is not easy to find and monitor, and the influence of the bolt connection looseness is huge. For example, in the power transmission process, a bolt is used for connecting an insulator to play a role in high-voltage insulation, multiple pieces of the insulator are assembled into a string to ensure the electrical safety distance of a high-voltage line, and if the bolt connected with the insulator is loosened, the insulator falls off the high-voltage line to cause the fault of the high-voltage line.
The nut anti-loosening gasket in the prior art only increases the resistance torque in the loosening direction and cannot completely play a role in preventing loosening; and the main methods for detecting the bolt connection looseness at present are divided into three types, namely: 1. a guided wave monitoring technique; 2. image monitoring technology; 3. a label monitoring technique; the existing method for monitoring the bolt connection looseness mainly has the problems of large equipment volume, complex signal processing process, overlong time consumption in the monitoring process, subjective judgment of manual monitoring and the like. In the face of complicated field test conditions, most monitoring technologies cannot realize durable and efficient monitoring. And partial monitoring equipment still uses wired connection, and the monitoring range is greatly limited. Although some current devices also use wireless methods, they cannot be used in field narrow or harsh environment monitoring due to power consumption and size.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a nut anti-loosening gasket assembly and a wireless bolt tightness monitoring system thereof, which solve the problems that the existing nut anti-loosening gasket cannot completely play a role in preventing loosening and the existing equipment for detecting the loosening of bolt connection exists: the actual monitoring range is small, the signal processing process is complex, and the time consumption of the monitoring process is too long.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the nut anti-loose gasket assembly comprises an upper layer of gaskets and a lower layer of gaskets arranged below the upper layer of gaskets; two sides of the upper gasket are respectively provided with a groove in a penetrating way;
two sides of the lower gasket are respectively provided with a side lug in a penetrating way, and each side lug comprises an elastic arm and a convex block matched with the groove; one end of the elastic arm is fixedly connected with the outer wall of the lower gasket, and the other end of the elastic arm is provided with a lug; the upper end surface and the lower end surface of the lug are parallel to the upper end surface of the lower gasket, and the lug is positioned at the top of the groove; and a gap with vertical height of d is arranged between the lower end surface of the bump and the upper end surface of the lower gasket.
The basic principle of the nut anti-loosening gasket assembly in the scheme is as follows: the nut anti-loosening gasket assembly is assembled between the bolt and the nut, the lug moves downwards under the action of pretightening force of the bolt connection, the lug moving downwards and the groove part of the lower-layer gasket are in corresponding clearance fit until the lower end face of the lug is attached to the upper end face of the lower-layer gasket, so that the whole contact of the bolt connection is surface contact, the friction force of the bolt part is increased, and the bolt is effectively prevented from being loosened under the action of external force or under the corrosion condition. Meanwhile, due to the downward movement of the convex block, the outer side face of the elastic arm connected with the convex block is bent and deformed, the elastic arm generates an upward acting force on the convex block, so that the convex block generates an upward force on the bolt, after the bolt is screwed down, under the condition of the same bolt connection pretightening force, the bending deformation of the outer side face of the elastic arm can provide an additional pretightening force for connection, the acting force between the thread pairs is increased, the end face friction force of the thread pairs is further increased, and the function of preventing the bolt connection from loosening in a severe environment is achieved.
Furthermore, in order to guarantee that after the bolt was screwed up, the lug was located the recess completely, and the up end of lug and the up end parallel and level of upper gasket for the contact surface of bolt and upper gasket is the whole up end of upper gasket, has increased the frictional force of bolt part, has prevented effectively that the bolt from producing under the exogenic action or the corruption circumstances not hard up, promotes the locking performance of locking gasket subassembly, and the thickness of upper gasket is the same with the thickness of lug.
Further, lower floor's gasket and side ear be integrated into one piece structure. The elastic arm and the convex block in the side lug are formed by punching and bending long strip-shaped plate-shaped section bars, so that the processing steps are reduced, the processing difficulty is reduced, and the manufacturing cost is reduced.
Furthermore, a limiting groove is formed in the side wall of the groove, and a limiting block matched with the limiting groove is arranged on the protruding block. The convex block is fixed in the groove through the matching of the limiting block and the limiting groove, the convex block is prevented from sliding out of the groove due to the fact that the convex block receives radial component force of bending deformation of the outer side face of the elastic arm, the convex block only receives axial component force of bending deformation of the outer side face of the elastic arm, and the anti-loosening capacity of the nut anti-loosening gasket assembly is improved.
Furthermore, the longitudinal section of the elastic arm is of a rectangular annular structure with an opening at the bottom, one end of the opening of the elastic arm is integrally connected with the outer side of the lower-layer gasket, and the other end of the opening of the elastic arm is integrally connected with the bump.
Furthermore, the upper gasket, the lower gasket, the elastic arm and the lug are all made of 45 steel, the No. 45 steel is medium carbon structural steel, cold and hot processing performance is good, mechanical performance is good, and the use requirement of the nut anti-loosening gasket assembly is met.
The scheme also provides a wireless bolt tightness monitoring system of the nut anti-loosening gasket assembly, which comprises a power module, a communication module and a plurality of strain gauges; the communication module and the plurality of strain gauges are electrically connected with the power supply module;
the plurality of strain gauges are electrically connected with the communication module, and the communication module is used for receiving a plurality of strain gauge electric signals and transmitting the received electric signals to the base station; the strain gauges are respectively fixed on the outer side surfaces of the elastic arms, the strain gauges correspond to the elastic arms one to one, and the single strain gauge is used for acquiring the deformation quantity of the outer side surface of the single elastic arm.
Furthermore, the communication module is a wireless communication module.
The basic principle of the bolt tightness wireless monitoring system is as follows: after the nut anti-loosening gasket assembly is assembled on the bolt, in the process of compressing the nut anti-loosening gasket assembly by the nut, the nut moves downwards to drive the convex block to move downwards into the groove, and the convex block moving downwards enables the outer side face of the elastic arm to generate corresponding bending deformation;
deflection epsilon of outer side surface of elastic arm 0 Height d after bump pressing 0 In a monotonic linear relationship:
in the formula d 0 D is the gap between the bump and the lower pad, i.e. the maximum displacement of the bump in the downward direction, epsilon max Is the maximum deformation of the outer side of the resilient arm, epsilon 0 The height of the bump is d 0 The deformation of the outer side surface of the elastic arm.
When the bolt connection is in a fastening state, the deformation of the outer side surface of the elastic arm is the largest, when the bolt connection is loosened, the outer side surface of the elastic arm recovers part deformation, the deformation of the outer side surface of the elastic arm can be correspondingly reduced, and the purpose of monitoring whether the bolt connection is loosened or not is achieved by monitoring the change of strain of the strain gauge.
The beneficial effect of this scheme: the bending deformation of the outer side face of the elastic arm can provide an extra pretightening force for connection, the acting force between the thread pairs is increased, and then the end face friction force of the thread pairs is increased, and the function of preventing the bolt connection from loosening in a severe environment is achieved. Deflection epsilon of outer side surface of elastic arm 0 Height d after pressing down with the bump 0 Be monotonous linear relation, can realize monitoring the not hard up purpose of bolted connection through the deflection of monitoring the elastic arm lateral surface, the information of the deflection of the elastic arm lateral surface that the foil gage will gather carries out teletransmission through wireless communication module, has realized remote monitoring's purpose, has enlarged monitoring range, has improved monitoring efficiency.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a nut lock washer assembly.
Fig. 2 is a schematic three-dimensional structure of the lower gasket.
Fig. 3 is a front view of the lower gasket.
Fig. 4 is a schematic top view of the upper gasket.
FIG. 5 is a schematic structural view of a wireless bolt tightness monitoring system mounted on a nut lock washer assembly.
Wherein, 1, an upper gasket; 2. a lower layer gasket; 3. a groove; 4. a lateral ear; 401. a resilient arm; 402. a bump; 5. a limiting groove; 6. a limiting block; 7. a power supply module; 8. a communication module; 9. a strain gauge; 10. a bolt; 11. and a nut.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined by the appended claims, and all changes that can be made by the invention using the inventive concept are intended to be protected.
As shown in fig. 1 to 5, the present invention provides a technical solution for achieving the above object, which is as follows:
the nut anti-loose gasket assembly comprises an upper gasket 1 and a lower gasket 2 arranged below the upper gasket 1; two sides of the upper gasket 1 are respectively provided with a groove 3 in a penetrating way;
two sides of the lower gasket 2 are respectively provided with a side ear 4 in a penetrating way, and each side ear 4 comprises an elastic arm 401 and a convex block 402 matched with the groove 3; the side wall of the groove 3 is provided with a limiting groove 5, and the bump 402 is provided with a limiting block 6 matched with the limiting groove 5. The bump 402 is fixed in the groove 3 through the matching of the limiting block 6 and the limiting groove 5, so that the bump 402 is prevented from sliding out of the groove 3 due to the radial component force of the bending deformation of the outer side face of the elastic arm 401, the bump 402 is only subjected to the axial component force of the bending deformation of the outer side face of the elastic arm 401, and the anti-loosening capacity of the nut anti-loosening gasket assembly is improved.
The longitudinal section of the elastic arm 401 is of a rectangular annular structure with an opening at the bottom, one end of the opening of the elastic arm 401 is integrally connected with the outer side of the lower gasket 2, and the other end of the opening of the elastic arm 401 is integrally connected with the bump 402; the shape of the resilient arm 401 may vary, but the basic test principle does not change.
The upper end surface and the lower end surface of the lug 402 are both parallel to the upper end surface of the lower gasket 2, and the lug 402 is positioned at the top of the groove 3; a gap with the vertical height d is formed between the lower end face of the bump 402 and the upper end face of the lower gasket 2; after the nut anti-loose washer assembly is assembled on the bolt 10, in the process that the nut 11 compresses the nut anti-loose washer assembly, the nut 11 moves downwards to drive the bump 402 to move downwards into the groove 3, and the bump 402 moving downwards enables the outer side surface of the elastic arm 401 to generate corresponding bending deformation;
amount of deformation epsilon of outer side surface of elastic arm 401 0 Height d after pressing down with bump 402 0 In a monotonic linear relationship:
in the formula d 0 D is the gap between the bump 402 and the lower pad 2, i.e. the maximum displacement of the bump 402 moving downward, epsilon max Is the maximum deformation of the outer side surface of the elastic arm 401 0 Is the height d of the bump 402 0 The amount of deformation of the outer side surface of the elastic arm 401; the purpose of monitoring the connection looseness of the bolt 10 can be achieved by monitoring the deformation of the outer side surface of the elastic arm 401.
Preferably, the thickness of upper gasket 1 is the same as the thickness of bump 402; can guarantee after bolt 10 screws up, lug 402 is arranged in recess 3 completely, and the up end parallel and level of lug 402 and upper gasket 1 for the contact surface of bolt 10 and upper gasket 1 is the whole up end of upper gasket 1, has increased the frictional force of bolt 10 part, has prevented effectively that bolt 10 from producing under receiving exogenic action or the corruption circumstances not hard up, promotes the locking performance of locking gasket subassembly.
As a specific structure of the lower gasket 2, the lower gasket 2 and the side lugs 4 are integrally formed. The elastic arm 401 and the convex block 402 in the side ear 4 are formed by punch forming and bending processing of the long strip plate-shaped section bar, so that the processing steps are reduced, the processing difficulty is reduced, and the manufacturing cost is reduced.
The material of upper gasket 1, lower floor's gasket 2, elastic arm 401 and lug 402 is 45 steel, and 45 steel is well carbon structural steel, and cold and hot processing performance is all good, and mechanical properties is better, satisfies the user demand of nut locking spacer subassembly.
The basic principle of the nut anti-loosening gasket assembly in the scheme is as follows: the nut anti-loosening gasket assembly is assembled between the bolt 10 and the nut 11, the lug 402 moves downwards under the action of pretightening force connected by the bolt 10, the lug 402 moving downwards is in corresponding clearance fit with the groove 3 part of the lower-layer gasket 2 until the lower end face of the lug 402 is attached to the upper end face of the lower-layer gasket 2, so that the whole contact connected by the bolt 10 is surface contact, the friction force of the bolt 10 part is increased, and the bolt 10 is effectively prevented from being loosened under the action of external force or under the corrosion condition. Meanwhile, due to the downward movement of the convex block 402, the outer side surface of the elastic arm 401 connected with the convex block 402 is bent and deformed, the elastic arm 401 generates an upward acting force on the convex block 402, the convex block 402 generates an upward force on the bolt 10, after the bolt 10 is screwed down, under the condition of the same bolt 10 connection pretightening force, the bending deformation of the outer side surface of the elastic arm 401 can provide an additional pretightening force for connection, the acting force between thread pairs is increased, the end surface friction force of the thread pairs is further increased, and the function of preventing the bolt 10 from being loosened in a severe environment is achieved.
The scheme also provides a wireless bolt tightness monitoring system of the nut anti-loosening gasket assembly, which comprises a power module 7, a communication module 8 and a plurality of strain gauges; the communication module 8 and the plurality of strain gauges are electrically connected with the power module 7;
the plurality of strain gauges are electrically connected with the communication module 8, and the communication module 8 is used for receiving electrical signals of the plurality of strain gauges and transmitting the received electrical signals to a base station; the plurality of strain gauges are respectively fixed on the outer side surfaces of the plurality of elastic arms 401, the strain gauges correspond to the elastic arms 401 one by one, and a single strain gauge is used for acquiring the deformation quantity of the outer side surface of the single elastic arm 401.
Further, the communication module 8 is a wireless communication module 8.
The basic principle of the wireless monitoring system for the tightness of the bolt is as follows: after the nut anti-loose washer assembly is assembled on the bolt 10, in the process that the nut 11 compresses the nut anti-loose washer assembly, the nut moves downwards to drive the lug 402 to move downwards into the groove 3, and the lug 402 moving downwards enables the outer side surface of the elastic arm 401 to generate corresponding bending deformation;
amount of deformation epsilon of outer side surface of elastic arm 401 0 Height d after pressing down with the bump 402 0 In a monotonic linear relationship:
in the formula d 0 Is the solid between the lower end face of the bump 402 and the upper end face of the upper layer gasket 1The height d is the gap between the bump 402 and the underlying pad 2, i.e. the maximum displacement of the bump 402 in the downward direction, epsilon max Is the maximum deformation of the outer side surface of the elastic arm 401 0 Is the height d of the bump 402 0 The amount of deformation of the outer surface of the elastic arm 401.
When the bolt 10 is connected and is in a fastening state, the deformation of the outer side surface of the elastic arm 401 is the largest, when the bolt 10 is connected and loosened, the recovery part of the outer side surface of the elastic arm 401 deforms, the deformation of the outer side surface of the elastic arm 401 can be correspondingly reduced, and the purpose of monitoring whether the bolt 10 is connected and loosened is achieved by monitoring the change of strain of the strain gauge.
The nut anti-loosening gasket assembly and the bolt tightness wireless monitoring system are specifically applied as follows: on nut lock washer subassembly was installed a plurality of bolts 10, communication network is constituteed jointly to foil gage and wireless communication module 8 among nut lock washer subassembly and the bolt elasticity wireless monitoring system, the strain signal of foil gage collection can be transmitted to among the wireless communication module 8, and wireless communication module 8 links to each other with the mobile communication basic station, can transmit monitor signal to farther host computer, the elasticity state of a plurality of bolts 10 nuts in the host computer real-time supervision actual environment, remote monitoring's purpose has been realized.
In conclusion, the bending deformation of the outer side surface of the elastic arm 401 can provide an additional pretightening force for connection, the acting force between the thread pairs is increased, the end surface friction force of the thread pairs is further increased, and the function of preventing the bolt 10 from being connected in a severe environment to be loosened is achieved. Amount of deformation ε of outer surface of elastic arm 401 0 Height d after pressing down with bump 402 0 The connection looseness purpose of the monitoring bolt 10 can be achieved by monitoring the deformation of the outer side face of the elastic arm 401, the strain gauge transmits collected information of the deformation of the outer side face of the elastic arm 401 to the remote through the wireless communication module 8, the remote monitoring purpose is achieved, the monitoring range is expanded, and the monitoring efficiency is improved.
Claims (7)
1. A nut anti-loose gasket assembly is characterized by comprising an upper layer of gasket and a lower layer of gasket arranged below the upper layer of gasket; two sides of the upper gasket are respectively provided with a groove in a penetrating way;
two sides of the lower gasket are respectively provided with a side lug in a penetrating way, and each side lug comprises an elastic arm and a convex block matched with the groove; one end of the elastic arm is fixedly connected with the outer wall of the lower gasket, and the other end of the elastic arm is provided with the lug; the upper end surface and the lower end surface of the lug are parallel to the upper end surface of the lower gasket, and the lug is positioned at the top of the groove; a gap with the vertical height of d is arranged between the lower end face of the bump and the upper end face of the lower gasket;
a wireless bolt tightness monitoring system is arranged on the outer side surface of the elastic arm and comprises a power module, a communication module and a plurality of strain gauges; the communication module and the plurality of strain gauges are electrically connected with the power module;
the communication module is used for receiving a plurality of strain gauge electric signals and transmitting the received electric signals to a base station; the plurality of strain gauges are respectively fixed on the outer side surfaces of the elastic arms, the strain gauges correspond to the elastic arms one by one, and a single strain gauge is used for acquiring the deformation quantity of the outer side surface of the single elastic arm.
2. A nut lock washer assembly as claimed in claim 1, wherein said upper washer has a thickness equal to a thickness of said projection.
3. The nut lock washer assembly of claim 2, wherein the lower washer and the side ears are of an integrally formed construction.
4. The nut anti-loose gasket assembly according to claim 3, wherein a limiting groove is formed on a side wall of the groove, and a limiting block matched with the limiting groove is arranged on the projection.
5. The nut lock washer assembly of claim 4 wherein said resilient arms are rectangular ring shaped in longitudinal cross section with an opening at the bottom.
6. The nut lock washer assembly of claim 5, wherein the upper washer, the lower washer, the resilient arms and the projections are all 45 steel.
7. The nut lock washer assembly of claim 1, wherein the communication module is a wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110822331.3A CN113530957B (en) | 2021-07-21 | 2021-07-21 | Nut anti-loosening gasket assembly and bolt tightness wireless monitoring system thereof |
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| CN202110822331.3A CN113530957B (en) | 2021-07-21 | 2021-07-21 | Nut anti-loosening gasket assembly and bolt tightness wireless monitoring system thereof |
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| CN113530957A CN113530957A (en) | 2021-10-22 |
| CN113530957B true CN113530957B (en) | 2023-04-18 |
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| CN114110002B (en) * | 2021-11-23 | 2023-07-25 | 浙江清华柔性电子技术研究院 | Gasket assembly, fastening structure and gasket service state monitoring method |
| CN115753044A (en) * | 2022-11-02 | 2023-03-07 | 南京蓝芯电力技术有限公司 | Online monitoring device and monitoring method for looseness of tension clamp bolt |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6227784B1 (en) * | 1999-08-17 | 2001-05-08 | Federal-Mogul World Wide, Inc. | Fastener assembly with vibration isolating features |
| CN102678726A (en) * | 2012-04-28 | 2012-09-19 | 苏州市邓尉喷胶棉厂 | Detachable anti-loosing component for screws |
| CN208348251U (en) * | 2018-04-09 | 2019-01-08 | 温州市力航汽车部件有限公司 | A kind of buffering bolt |
| CN209130008U (en) * | 2018-11-09 | 2019-07-19 | 广州汽车集团股份有限公司 | A kind of built up gear positioning retainer ring mechanism and hybrid vehicle with it |
| CN109372882A (en) * | 2018-11-21 | 2019-02-22 | 中国航空工业集团公司北京航空精密机械研究所 | It is a kind of can be with the washer of monitoring bolt pretightning force |
| CN110400447A (en) * | 2019-07-24 | 2019-11-01 | 南京信息职业技术学院 | A kind of device of early warning working bolt exception |
| CN112240339A (en) * | 2020-11-12 | 2021-01-19 | 张仙驰 | Double-layer anti-loosening bolt pad |
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