CN211042107U - Looseness monitoring device for bolt or nut - Google Patents
Looseness monitoring device for bolt or nut Download PDFInfo
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- CN211042107U CN211042107U CN201922041991.9U CN201922041991U CN211042107U CN 211042107 U CN211042107 U CN 211042107U CN 201922041991 U CN201922041991 U CN 201922041991U CN 211042107 U CN211042107 U CN 211042107U
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- bolt
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- optical fiber
- deformation sensor
- deformation
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Abstract
The utility model discloses a not hard up monitoring devices of bolt or nut, bolt or nut are used for fastening on a base, just bolt or nut have non-circular head, not hard up monitoring devices includes: the optical fiber deformation sensor and the supporting device; the optical fiber deformation sensor is provided with a deformation induction section, the supporting device is arranged on the base and is used for supporting the optical fiber deformation sensor, and the deformation induction section of the optical fiber deformation sensor is arranged to be located at the corresponding position of the non-circular head, so that the deformation induction section deforms when the non-circular head rotates. The utility model provides a not hard up monitoring devices of bolt or nut has realized the not hard up control of bolt or nut, can in time discover the not hard up and the fracture condition of bolt or nut to in time maintenance has improved aerogenerator and has patrolled and examined the scientificity and the reliability of maintaining, has realized the automatic monitoring function of bolt or nut state.
Description
Technical Field
The utility model relates to a fixing bolt or nut state monitoring technology especially relates to a not hard up monitoring devices of bolt or nut.
Background
At present, the wind power generation industry is widely popularized all over the world, and due to the fact that most of the wind power generation industry is arranged on the sea or in remote mountainous areas along the sea, daily maintenance is extremely inconvenient. Moreover, the number of large bolts or nuts used is extremely large (more than 500 bolts are fixed on one large wind driven generator), and the bolts or nuts are easy to loosen on the wind driven generator due to the severe environment, and the loosening of the bolts or nuts can cause the wind driven generator to be damaged or even collapse. During the normal operation of the wind generating set, the polling period of the high-strength bolt or nut is generally half a year to one year, the polling period interval is long, the condition that the bolt or nut is loosened or broken cannot be found in time, and a large amount of time, manpower and material resources are consumed in polling each time, particularly for the offshore wind generating set, the offshore wind generating set extends into a coastline for several kilometers, the polling of the set is inconvenient, the polling cost is high, and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a not hard up monitoring devices of bolt or nut in order to overcome the not hard up defect of monitoring of bolt or nut among the prior art.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a loosening monitoring device for a bolt or nut that is adapted to be secured to a base and that has a non-circular head, the loosening monitoring device comprising:
the optical fiber deformation sensor and the supporting device;
the optical fiber deformation sensor is provided with a deformation induction section, the supporting device is arranged on the base and is used for supporting the optical fiber deformation sensor, and the deformation induction section of the optical fiber deformation sensor is arranged to be located at the corresponding position of the non-circular head, so that the deformation induction section deforms when the non-circular head rotates.
Preferably, the looseness monitoring device further comprises a mounting base, the mounting base comprises a fixing portion and an accommodating portion, the fixing portion is used for fixing the supporting device, and the accommodating portion is used for accommodating the bolt or the nut.
Preferably, the accommodating portion is a through hole, and the mounting base is sleeved on the bolt or the nut through the through hole.
Preferably, the support device comprises two support frames;
the supporting frame is provided with a groove, the two ends of the optical fiber deformation sensor are provided with limiting parts, the two ends of the optical fiber deformation sensor are respectively and fixedly arranged in the groove of the supporting frame, and the limiting parts are attached to the outer side wall of the groove of the supporting frame.
Preferably, the support device comprises two support frames;
the optical fiber deformation sensor is characterized in that the support frame is provided with a clamping portion, the two ends of the optical fiber deformation sensor are fixedly provided with connecting portions, and the connecting portions at the two ends of the optical fiber deformation sensor are respectively clamped in the clamping portion on the support frame.
Preferably, the head of the bolt or the nut is polygonal, and the deformation sensing section of the optical fiber deformation sensor is attached to one edge of the head.
The utility model discloses an actively advance the effect and lie in: the utility model provides a not hard up monitoring devices of bolt or nut has realized the not hard up control of bolt or nut, can in time discover the not hard up and the fracture condition of bolt or nut to in time maintenance has improved aerogenerator and has patrolled and examined the scientificity and the reliability of maintaining, has realized bolt or nut state automatic monitoring function.
Drawings
Fig. 1 is a schematic structural view of a loosening monitoring device for a bolt according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of an installation base according to embodiment 1 of the present invention.
Fig. 3 is a schematic view of a position structure of the bolt according to embodiment 1 of the present invention when the bolt is not loosened.
Fig. 4 is a schematic view of a position structure of the bolt according to embodiment 1 of the present invention when the bolt becomes loose.
Fig. 5a and 5b are schematic views of another installation structure of the optical fiber deformation sensor according to embodiment 1 of the present invention.
Fig. 6 is a schematic structural view of a device for monitoring loosening of a plurality of bolts according to embodiment 1 of the present invention.
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the utility model discloses a not hard up monitoring devices schematic structure of bolt of embodiment 1, the not hard up monitoring devices of this bolt includes optic fibre deformation sensor 1 and strutting arrangement 3, optic fibre deformation sensor 1 has deformation response section 12, be used for the fastening on the base by monitoring bolt 2, it is hexagon bolt by monitoring bolt 2 in this embodiment, its head is the hexagon, optic fibre deformation sensor's deformation response section 12 is set to a limit of hugging closely 2 hexagon heads of hexagon bolt, rotary motion is done to its hexagon head when hexagon bolt 2 takes place to become flexible, make optic fibre deformation sensor's deformation response section 12 produce deformation, optic fibre deformation sensor 1 can output deformation signal, it is not hard up to produce in order to monitor the bolt.
The utility model discloses a not hard up monitoring devices of bolt by the head of monitoring bolt can also be quadrangle or any other non-circular shape.
In the bolt loosening monitoring device of the embodiment, two optical fiber deformation sensors 1 are used for monitoring the loosening condition of the same bolt. Two optical fiber deformation sensors 1 are arranged on opposite sides of the hexagonal head of the hexagon bolt 2 in parallel, and deformation induction sections 12 of the two optical fiber deformation sensors are respectively attached to one side of the hexagonal head of the hexagon bolt 2.
The not hard up monitoring devices of bolt of this embodiment quantity and the mode of setting up of optic fibre deformation sensor 1 are not limited to this embodiment, and any mode monitoring bolt that produces deformation with optic fibre deformation sensor's deformation induction section 12 is not hard up, all falls into in essence the utility model discloses the scope of protection.
The supporting device 3 is arranged on the base and used for supporting the optical fiber deformation sensor 1, and the supporting device 3 comprises two supporting frames 31; be provided with recess 32 on the support frame 31, the both ends of optic fibre deformation sensor 1 are equipped with spacing portion 11, and the both ends of optic fibre deformation sensor 1 are fixed respectively and are set up in the recess 32 of support frame, and the lateral wall laminating of the recess 32 of spacing portion 11 and support frame is used for fixed optic fibre deformation sensor 1.
The utility model discloses a not hard up monitoring devices of bolt, 31 can also be provided with block portion on the support frame, and connecting portion can also set firmly at 1 both ends of optic fibre deformation sensor, and the purpose of fixed optic fibre deformation sensor 1 is realized in the block portion of connecting portion difference block on support frame 31 at the both ends of optic fibre deformation sensor 1.
The bolt looseness monitoring device of the embodiment further comprises an installation base 4, and the installation base 4 is arranged on the base; the supporting device 3 is fixedly arranged on the mounting base 4.
The supporting device 3 in the bolt looseness monitoring device of the embodiment can also be directly fixed on the base through fixing glue or bolts.
As shown in fig. 2, the mounting base of embodiment 1 of the present invention is schematically illustrated. The mounting base 4 includes a fixing portion 41 for fixing the support device 3 and an accommodating portion 42 for accommodating the bolt 2. The accommodating portion 42 of the mounting base 4 in this embodiment is specifically a through hole, and the mounting base 4 is sleeved on the bolt 2 through the through hole.
The utility model discloses a not hard up monitoring devices of bolt realizes the not hard up principle of monitoring of bolt as follows:
as shown in fig. 3, the position structure of the bolt according to embodiment 1 of the present invention is not loosened. The not hard up monitoring devices of bolt of this embodiment includes two optic fibre deformation sensor 1, optic fibre deformation sensor 1 is fixed in the both sides of installing 4 upper bracket frames 31 of base, and 1 parallel arrangement of two optic fibre deformation sensor, parallel with 2 hexagonal tightening faces of hexagon bolt, the deformation response section 12 of optic fibre deformation sensor does not receive the atress under the not emergence not hard up condition of bolt 2, only receive the temperature influence and have weak expend with heat and contract with cold, at this moment, the deformation signal of optic fibre deformation sensor 1 output is for not having or exporting weak deformation signal.
As shown in fig. 4, the position structure of the bolt according to embodiment 1 of the present invention is schematically illustrated. When the bolt is loosened, the parallel surface of the hexagon bolt 2 rotates, and the hexagon sharp angle of the bolt 2 enables the deformation induction section 12 of the optical fiber deformation sensor to be stressed to deform or even break. At this time, the optical fiber deformation sensor 1 outputs a large deformation signal or outputs a signal missing. For example, when the bolt 2 is loosened and rotated by 45 °, the hexagonal sharp angle of the bolt 2 deforms the deformation sensing section 12 of the optical fiber deformation sensor by 3.5mm or the deformation sensing section 12 of the optical fiber deformation sensor is broken, and at this time, the optical fiber deformation sensor 1 outputs a large deformation signal or outputs a signal missing, which indicates that the bolt 2 is loosened. The uncertainty of a single sensor is considered, the two optical fiber deformation sensors 1 are used for monitoring simultaneously, induction points are consistent, if the deformation signal variation quantity output by the two optical fiber deformation sensors 1 is the same, the measured bolt 2 is loosened, and background analysis is carried out on the measurement result, so that the test result is more reliable.
As shown in fig. 5a, the utility model discloses an another kind of mounting structure sketch of optic fibre deformation sensor of embodiment 1, optic fibre deformation sensor 1's both ends are buckled, and deformation response section 12 pastes and establishes on one side of the head of bolt 2 to adapt to different installation space.
As shown in fig. 5b, the utility model discloses an another kind of mounting structure schematic diagram of optic fibre deformation sensor of embodiment 1, two optic fibre deformation sensor 1 parallel settings are on same support frame, and two optic fibre deformation sensor 1's both ends are buckled simultaneously, and the deformation induction section 12 of two sensors is pasted simultaneously and is established on one side of bolt 2's head to adapt to different installation space, provide test reliability simultaneously.
In the bolt looseness monitoring device of this embodiment, a bolt receives the monitoring of two sensors simultaneously to guarantee that the normal operating of monitoring still can be ensured under the special condition that a sensor became invalid, realized improving the purpose of test accuracy and reliability.
The loosening monitoring device for a bolt of the present embodiment is also applicable to the loosening monitoring of a nut having a non-circular head.
As shown in fig. 6, the utility model discloses a not hard up monitoring devices of a plurality of bolts's of embodiment's schematic structure.
The not hard up monitoring devices of the above-mentioned bolt of a plurality of including this not hard up monitoring devices, the not hard up monitoring devices of every bolt all is fixed on the base, the not hard up monitoring devices of every bolt contains two optic fibre deformation sensing 1, 1 parallel arrangement of these two optic fibre deformation sensing is on hexagon bolt 2's relative edge, 2 limits of hexagon bolt are hugged closely respectively to two optic fibre deformation sensing 1's deformation response section 12, make deformation response section 12 produce deformation when hexagon bolt 2 takes place to become hard up, optic fibre deformation sensing 1 output deformation signal.
A plurality of bolts are arranged on a common fan, and the bolt looseness monitoring device is arranged at a key bolt, so that the automatic online monitoring of the bolt state can be realized.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (6)
1. A loosening monitoring device for a bolt or nut that is intended to be fastened to a base and that has a non-circular head, comprising:
the optical fiber deformation sensor and the supporting device;
the optical fiber deformation sensor is provided with a deformation induction section, the supporting device is arranged on the base and is used for supporting the optical fiber deformation sensor, and the deformation induction section of the optical fiber deformation sensor is arranged to be located at the corresponding position of the non-circular head, so that the deformation induction section deforms when the non-circular head rotates.
2. The device for monitoring the loosening of a bolt or nut of claim 1, further comprising a mounting base including a fixing portion for fixing the support device and a receiving portion for receiving the bolt or nut.
3. The loosening monitoring device for the bolt or nut of claim 2, wherein the accommodating portion is a through hole, and the mounting base is sleeved on the bolt or nut through the through hole.
4. A bolt or nut loosening monitoring device as claimed in claim 1, wherein said support means comprises two support brackets;
the supporting frame is provided with a groove, the two ends of the optical fiber deformation sensor are provided with limiting parts, the two ends of the optical fiber deformation sensor are respectively and fixedly arranged in the groove of the supporting frame, and the limiting parts are attached to the outer side wall of the groove of the supporting frame.
5. A bolt or nut loosening monitoring device as claimed in claim 1, wherein said support means comprises two support brackets;
the optical fiber deformation sensor is characterized in that the support frame is provided with a clamping portion, the two ends of the optical fiber deformation sensor are fixedly provided with connecting portions, and the connecting portions at the two ends of the optical fiber deformation sensor are respectively clamped in the clamping portion on the support frame.
6. The device for monitoring the loosening of the bolt or the nut as claimed in claim 1, wherein the head of the bolt or the nut is polygonal, and the deformation sensing section of the optical fiber deformation sensor is attached to one edge of the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922041991.9U CN211042107U (en) | 2019-11-22 | 2019-11-22 | Looseness monitoring device for bolt or nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922041991.9U CN211042107U (en) | 2019-11-22 | 2019-11-22 | Looseness monitoring device for bolt or nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042107U true CN211042107U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922041991.9U Active CN211042107U (en) | 2019-11-22 | 2019-11-22 | Looseness monitoring device for bolt or nut |
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| CN (1) | CN211042107U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098879A1 (en) * | 2019-11-22 | 2021-05-27 | 奥动新能源汽车科技有限公司 | Looseness monitoring device and system of bolt or nut |
| WO2021120989A1 (en) * | 2019-12-20 | 2021-06-24 | 奥动新能源汽车科技有限公司 | Looseness monitoring device and system for bolts or nuts |
| WO2021120990A1 (en) * | 2019-12-20 | 2021-06-24 | 奥动新能源汽车科技有限公司 | Looseness monitoring device and system for bolts or nuts |
-
2019
- 2019-11-22 CN CN201922041991.9U patent/CN211042107U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098879A1 (en) * | 2019-11-22 | 2021-05-27 | 奥动新能源汽车科技有限公司 | Looseness monitoring device and system of bolt or nut |
| WO2021120989A1 (en) * | 2019-12-20 | 2021-06-24 | 奥动新能源汽车科技有限公司 | Looseness monitoring device and system for bolts or nuts |
| WO2021120990A1 (en) * | 2019-12-20 | 2021-06-24 | 奥动新能源汽车科技有限公司 | Looseness monitoring device and system for bolts or nuts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220713 Address after: 201306 C, 888, west two road, Nanhui new town, Pudong New Area, Shanghai Patentee after: Feixun sensor technology (Shanghai) Co.,Ltd. Address before: 201307 2nd floor, building 2, 4766 Jiangshan Road, Nicheng Town, Pudong New Area, Shanghai Patentee before: AULTON NEW ENERGY AUTOMOTIVE TECHNOLOGY Group |
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| TR01 | Transfer of patent right |