CN212722724U - On-line monitoring system for anti-loosening bolt - Google Patents
On-line monitoring system for anti-loosening bolt Download PDFInfo
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- CN212722724U CN212722724U CN202020706614.2U CN202020706614U CN212722724U CN 212722724 U CN212722724 U CN 212722724U CN 202020706614 U CN202020706614 U CN 202020706614U CN 212722724 U CN212722724 U CN 212722724U
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- eddy current
- monitoring system
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- bolt
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Abstract
The utility model discloses an online monitoring system of locking bolt that takes off, including the eddy current coil screw rod, eddy current coil screw rod bottom is provided with the nut, the nut surface is around having detection coil, detection coil has a plurality of signal lines through coil joint connection, the signal line other end is connected with the eddy current detector, the eddy current coil screw rod with the nut junction is provided with locking induction washer, locking induction washer top is provided with by even work piece A, be provided with by even work piece B above even work piece A, be provided with the nut above even work piece B, the eddy current coil screw rod passes in proper order locking induction washer be even work piece A by even work piece B the nut.
Description
Technical Field
The utility model relates to a bolt technical field particularly, relates to an online monitoring system of locking bolt that takes off.
Background
The bolt is widely applied to various industries due to good performance, simple structure and high reliability, but the current bolt has the problem of easy looseness, and the bolt is easy to loosen and even fall off due to the clearance between the connecting pieces and frequent vibration. At present, the connection of a power grid iron tower is basically connected by bolts, but the iron tower can generate frequent vibration due to the influence of natural environment factors on the iron tower for a long time, the bolts can loosen after long-term accumulation, and the falling of the bolts can be aggravated under the action of severe weather such as strong wind and the like, so that part of angle steel falls, serious accidents such as tower collapse and the like caused by the instability of the iron tower structure are caused, and the power grid safety is directly harmed.
In order to prevent the bolt from loosening, various anti-loosening measures are applied, such as technologies of using anti-loosening nuts, self-tightening nuts, anti-loosening washers and the like, but the working condition of the bolt cannot be monitored on line.
In view of the above technical problems, no effective solution has been proposed at present.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides an online monitoring system of locking bolt that takes off can overcome prior art's the aforesaid not enough.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides an online monitoring system of locking bolt that takes off, includes the eddy current coil screw rod, eddy current coil screw rod bottom is provided with the nut, the nut surface is around being connected with detection coil, detection coil has a plurality of signal lines through coil joint connection, the signal line other end is connected with the eddy current detector, the eddy current coil screw rod with the nut junction is provided with locking induction washer, locking induction washer top is provided with and is linked work piece A, be provided with and is linked work piece B above being linked work piece A, be linked work piece B top and be provided with the nut, the eddy current coil screw rod passes in proper order locking induction washer be linked work piece A linked work piece B the nut.
Further, the detection coil is a pass-type detection coil.
Wherein, the detection coil is annular in shape.
Wherein the detection coil carries an alternating current.
Wherein the detection coil generates an alternating magnetic field.
Furthermore, the anti-loosening induction washer is made of a metal conductive material.
Wherein, the surface of locking response packing ring is provided with bellied decorative pattern.
Wherein, the detection coil and the anti-loosening induction washer form an eddy current detection system.
Further, the number of the signal lines is 2.
Further, the vortex detector is of an EEC-2004 model.
The utility model has the advantages that: the utility model discloses a vortex detecting system that detection coil and locking response packing ring are constituteed utilizes carrying in the vortex detection from the effect, provides the online monitoring system of the locking bolt that takes off that reliable performance, effect are showing, easily processing, simple to operate, repeatedly usable have realized appearing not hard up very first time automatic alarm at the bolt, in time indicate the staff to handle, have ensured bolt safe and reliable in the use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an eddy current coil screw of an online monitoring system for a locking bolt according to an embodiment of the present invention;
fig. 2-1 is a schematic view of a first perspective structure of a locking induction washer of an online monitoring system for a locking bolt according to an embodiment of the present invention;
fig. 2-2 is a schematic view of a second perspective structure of a locking induction washer of an online monitoring system for a locking bolt according to an embodiment of the present invention;
fig. 3 is a schematic working diagram of an online monitoring system for a locking bolt according to an embodiment of the present invention.
In the figure:
1. an eddy current coil screw; 2. a detection coil; 3. a lock-proof induction washer; 4. a nut; 5. a connected workpiece A; 6. a connected workpiece B; 7. a signal line; 8. an eddy current detector; 9. and (4) a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1 and 3, according to the embodiment of the utility model provides an online monitoring system of locking bolt that takes off, including vortex coil screw 1, vortex coil screw 1 bottom is provided with nut 9, nut 9 surface is around being connected with detection coil 2, detection coil 2 is connected with a plurality of signal lines 7 through coil joint, the signal line 7 other end is connected with eddy current detector 8, vortex coil screw 1 is provided with locking induction washer 3 with nut 9 junction, locking induction washer 3 top is provided with and is connected work piece A5, be provided with above being connected work piece A5 and be connected work piece B6, be connected work piece B6 top and be provided with nut 4, vortex coil screw 1 passes locking induction washer 3 in proper order, be connected work piece A5, be connected work piece B6, nut 4.
In a specific embodiment, the detection coil 2 is a pass-through detection coil.
Preferably, the detection coil 2 is annular in shape.
Preferably, the detection coil 2 carries an alternating current.
Preferably, the detection coil 2 generates an alternating magnetic field.
As shown in fig. 2, in an embodiment, the material of the anti-loose induction washer 3 is a metal conductive material.
Preferably, the surface of the anti-loose induction washer 3 is provided with a raised pattern.
Preferably, the detection coil 2 and the anti-loose induction washer 3 constitute an eddy current inspection system.
Preferably, the anti-loosening induction washer 3 can increase friction force and pretightening force to play a role in preventing loosening.
In one embodiment, the number of signal lines 7 is 2.
In one embodiment, the eddy current tester 8 is model EEC-2004.
In a specific embodiment, there is a lift-off effect between the detection coil 2 and the detected object.
Preferably, the lift-off effect is that when a spot detection coil is used, a change in the distance between the coil and the workpiece causes a change in the impedance of the detection coil.
Preferably, the conductivity performance of the test object can be determined by measuring the change in impedance of the detection coil 2.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
When specifically using, according to an online monitoring system of locking bolt that takes off, mainly include eddy current coil screw 1, detection coil 2, locking induction washer 3, eddy current detector 8, wherein, eddy current coil screw 1 comprises ordinary screw rod and through type detection coil 2. The passing detection coil 2 is tightly wound on a nut 9 of the screw rod; the coil joint of the detection coil 2 is led out from the lower part and is connected with an eddy current detector 8 through a signal wire 7, so that the eddy current coupling is good at this time, and the impedance value of the detection coil 2 at this time is measured as a base value. When the detection coil 2 carrying the alternating current is close to the anti-loose induction washer 3, because the anti-loose induction washer 3 is a conductive substance, an eddy current is induced in the anti-loose induction washer 3 under the action of the alternating magnetic field generated by the detection coil 2, and the impedance of the detection coil 2 is changed by the reaction magnetic field of the induced eddy current, and the electrical conductivity performance of the anti-loose induction washer 3 can be judged by measuring the impedance change of the detection coil 2. However, during eddy current testing, a lift-off effect exists between the detection coil 2 and the anti-loosening sensing washer 3, and the stress condition and the tightness degree of the bolt during working can be evaluated by measuring the lift-off effect between the detection coil 2 and the anti-loosening sensing washer 3 in real time. If the bolt is loosened due to vibration and other reasons in the using process, the gap between the detection coil 2 and the anti-loosening induction washer 3 is changed certainly, the impedance value in the detection coil 2 is changed greatly due to the lift-off effect, the eddy current detector 3 processes and identifies the change signal of the impedance value, and the system automatically alarms when the change amplitude of the signal exceeds the early warning value.
The parameter setting of the eddy current detection system adopts higher detection frequency, the higher detection frequency can increase the density of eddy current generated by the detection coil excited in the measured induction washer, further enhance the lift-off effect of the eddy current, and the little lift-off can generate great impedance change, because the change of the distance between the coil and the workpiece can change the magnetic line of force reaching the workpiece, change the magnetic flux in the workpiece, and further influence the impedance of the coil. The lift-off effect must be inhibited when the workpiece is subjected to eddy current detection, so that the distance between a detection coil and the detected workpiece must be reduced as much as possible when the workpiece is subjected to eddy current detection to realize good coupling, and the lift-off effect can be used as an important criterion signal when the connecting bolt is monitored on line.
To sum up, the utility model discloses a vortex detecting system that detecting coil and locking response packing ring are constituteed utilizes carrying out the effect among the vortex detecting, the on-line monitoring system who provides a dependable performance, the effect is showing, easily processing, simple to operate, repeatedly usable's locking takes off the bolt, can assess stress situation and the elasticity degree with bolt during operation through carrying out the effect of carrying out the effect between real-time determination detecting coil and the locking response packing ring, realized appearing not hard up very first time autoalarm at the bolt, in time, the suggestion staff handles, the bolt has been ensured safe and reliable in the use.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an online monitoring system of locking bolt that takes off, a serial communication port, including eddy current coil screw rod (1), eddy current coil screw rod (1) bottom is provided with nut (9), nut (9) surface is around being connected with detection coil (2), detection coil (2) are connected with a plurality of signal lines (7) through coil joint, signal line (7) other end is connected with eddy current detector (8), eddy current coil screw rod (1) with nut (9) junction is provided with locking induction washer (3), locking induction washer (3) top is provided with and is linked work piece A (5), be provided with by even work piece B (6) by even work piece A (5) top, be provided with nut (4) by even work piece B (6) top, eddy current coil screw rod (1) passes in proper order locking induction washer (3), The connected workpiece A (5), the connected workpiece B (6) and the nut (4).
2. An on-line monitoring system for a bolt release prevention according to claim 1, characterized in that the detection coil (2) is a pass-through detection coil.
3. An on-line monitoring system for a bolt release prevention according to claim 2, characterized in that the detection coil (2) is annular in shape.
4. An on-line monitoring system for a bolt release prevention according to claim 2, characterized in that the detection coil (2) carries an alternating current.
5. An on-line monitoring system for a bolt release prevention according to claim 4, characterized in that the detection coil (2) generates an alternating magnetic field.
6. The on-line monitoring system for the anti-loose bolt is characterized in that the anti-loose induction washer (3) is made of a metal conductive material.
7. On-line monitoring system of a loose-proof bolt according to claim 6, characterized in that the surface of the loose-proof induction washer (3) is provided with a raised pattern.
8. An on-line monitoring system for a bolt release prevention according to claim 2 or 6, characterized in that the detection coil (2) and the anti-loose induction washer (3) constitute an eddy current detection system.
9. An on-line monitoring system for a bolt release prevention according to claim 1, characterized in that the number of signal lines (7) is 2.
10. An on-line monitoring system for a loosening-prevention bolt according to claim 1, wherein the eddy current tester (8) is of the EEC-2004 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020706614.2U CN212722724U (en) | 2020-04-30 | 2020-04-30 | On-line monitoring system for anti-loosening bolt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020706614.2U CN212722724U (en) | 2020-04-30 | 2020-04-30 | On-line monitoring system for anti-loosening bolt |
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| Publication Number | Publication Date |
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| CN212722724U true CN212722724U (en) | 2021-03-16 |
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| CN202020706614.2U Active CN212722724U (en) | 2020-04-30 | 2020-04-30 | On-line monitoring system for anti-loosening bolt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799418A (en) * | 2021-08-23 | 2021-12-17 | 厦门大学 | Preparation method of intelligent composite material bolt, composite material bolt and use method |
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2020
- 2020-04-30 CN CN202020706614.2U patent/CN212722724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799418A (en) * | 2021-08-23 | 2021-12-17 | 厦门大学 | Preparation method of intelligent composite material bolt, composite material bolt and use method |
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Address after: No. 2096, Beijing New Energy Technology Research Institute Patentee after: Guoneng boiler and Pressure Vessel Inspection Co.,Ltd. Address before: No. 2096, Beijing New Energy Technology Research Institute Patentee before: GUODIAN BOILER AND PRESSURE VESSEL INSPECTION Co.,Ltd. |