CN216049775U - Bolt looseness monitoring device - Google Patents
Bolt looseness monitoring device Download PDFInfo
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- CN216049775U CN216049775U CN202121807787.4U CN202121807787U CN216049775U CN 216049775 U CN216049775 U CN 216049775U CN 202121807787 U CN202121807787 U CN 202121807787U CN 216049775 U CN216049775 U CN 216049775U
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- monitoring device
- housing
- permanent magnet
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Abstract
The utility model discloses a bolt looseness monitoring device, which is used for monitoring the tightness state of a bolt to be detected, wherein the bolt to be detected is arranged in two connecting pieces needing to be connected in a penetrating way, and a nut is sleeved at the end part of the bolt to be detected and comprises: the sensor assembly, the permanent magnet assembly, the support plate and the hoop; the backup pad includes two, sets up respectively in sensor assembly's both sides, and two backup pads hoop through the ferrule and establish in the outside of nut, and permanent magnet subassembly one end sets up at the tip of the bolt that awaits measuring, and the other end is towards sensor assembly. The device can monitor the bolt in real time in a non-contact mode, does not influence the normal work of the fan, and is high in monitoring precision, simple to operate and convenient to maintain.
Description
Technical Field
The utility model relates to the technical field of bolt looseness monitoring, in particular to a bolt looseness monitoring device.
Background
The assembly and the fastening of large-scale aerogenerator, high-speed train generator and steel construction transmission tower have all used high strength fastening bolt and nut, because aerogenerator, transmission tower can incessantly rock in the strong wind, high-speed train also can continuously vibrate at the operation in-process, and the existence of these vibrations can make fastening bolt have not hard up risk. For a generator with large risk, the screwing state of bolts in the wind turbine generator directly affects the working performance of equipment, and if the loosening problem occurs, disastrous results can be caused.
In the prior art, manual detection is mostly adopted, but due to the fact that the number of the bolts is large, the method is large in workload, low in efficiency, easy in error detection and missing detection and incapable of carrying out more effective real-time monitoring on the bolts.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, aim at providing a bolt looseness monitoring devices, can carry out real-time supervision to the bolt contactlessly, do not influence the fan and normally work, monitoring precision height, easy operation, maintenance convenience simultaneously.
The specific technical scheme is as follows:
the utility model provides a bolt not hard up monitoring devices for the elasticity state of monitoring the bolt that awaits measuring, the bolt that awaits measuring wears to locate two connecting pieces that need to connect, and a nut cover is established the tip of the bolt that awaits measuring mainly includes: the sensor assembly, the permanent magnet assembly, the support plate and the hoop;
the backup pad includes two, sets up respectively sensor component's both sides, two the backup pad passes through the hoop is established the outside of nut, permanent magnet subassembly one end sets up the tip of bolt that awaits measuring, the other end orientation sensor component.
In the bolt looseness monitoring device, the sensor assembly comprises a shell, a circuit board and a hall sensor, the circuit board is arranged in the shell, the hall sensor is arranged on one side, facing the permanent magnet assembly, of the circuit board, and the two support plates are fixedly connected with the two sides of the shell.
In the bolt looseness monitoring device, the permanent magnet assembly comprises a magnet base and a permanent magnet, one end of the magnet base is arranged at the end part of the bolt to be detected, an installation groove is formed in the other end of the magnet base, and the permanent magnet is placed in the installation groove and faces the Hall sensor.
In the bolt looseness monitoring device, the bolt looseness monitoring device is characterized in that the shell comprises a square shell and a cover plate, the circuit board is arranged in the square shell, and the cover plate is covered on one side, deviating from the bolt to be detected, of the square shell.
In the bolt looseness monitoring device, a sealing ring is further arranged between the square shell and the cover plate.
In the bolt looseness monitoring device, a plug-in structure is arranged on one side of the square shell, one end of the plug-in structure, which is located inside the square shell, is electrically connected with the circuit board, and the other end of the plug-in structure extends out of the square shell and is connected with an external monitoring system.
In the bolt looseness monitoring device, the support plate is provided with an elongated hole, the shell is provided with a fastening hole, and the elongated hole and the fastening hole are internally provided with a fastening piece in a penetrating manner.
In the bolt looseness monitoring device, the hoop is a throat hoop.
The positive effects of the technical scheme are as follows:
according to the bolt looseness monitoring device provided by the utility model, the magnet assembly is arranged at the end part of the bolt to be detected, the sensor assembly is connected with the outer side of the nut through the supporting plate, no matter the bolt is loosened or the nut is loosened, the sensor assembly can measure the relative angular displacement and feed the relative angular displacement back to an external monitoring system such as an upper computer, the upper computer carries out real-time monitoring through matrix or map analysis, when the early warning loosening angle is reached, an early warning can be generated, an engineer is reminded of reinforcing the nut at the position, meanwhile, adjacent nuts are checked or the whole device is maintained and checked, the bolt can be monitored in real time in a non-contact mode, the normal work of a fan is not influenced, and meanwhile, the monitoring precision is high, the operation is simple, and the maintenance is convenient.
Drawings
Fig. 1 is an exploded view of a bolt loosening monitoring device according to the present invention;
fig. 2 is a schematic cross-sectional structural view of a bolt loosening monitoring device provided by the utility model.
In the drawings: 1. a bolt to be tested; 2. a nut; 3. a sensor assembly; 31. a housing; 311. a square housing; 3111. a plug-in structure; 3112. a fastening hole; 312. a cover plate; 313. a seal ring; 314. mounting holes; 32. a circuit board; 4. a permanent magnet assembly; 41. a magnet base; 411. mounting grooves; 42. a permanent magnet; 5. a support plate; 51. a long hole; 6. a hoop; 7. a fastener.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It should be noted that, in this embodiment, the bolt to be tested 1 is used to connect two pieces to be connected a, and one nut 2 is sleeved on an end of the bolt to be tested 1. Specifically, the nut 2 in the present embodiment is an outer hexagonal nut.
Referring to fig. 1 and 2, the present invention discloses a bolt looseness monitoring device for monitoring the tightness state of a bolt 1 to be tested, the device comprising: sensor assembly 3, permanent magnet assembly 4, support plate 5 and ferrule 6.
Specifically, the sensor assembly 3 includes a housing 31, a circuit board 32, and a hall sensor (not visible in the figure), the circuit board 32 is disposed in the housing 31, the hall sensor is disposed on a side of the circuit board 32 facing the permanent magnet assembly 4, and the two support plates 5 are respectively fixedly connected to two sides of the housing 31. Preferably, the inner cavity of the housing 31 is filled with epoxy resin glue to cover the circuit board 32.
Optionally, the housing 31 includes a square housing 311 and a cover plate 312, the circuit board 32 is disposed in the square housing 311, and the cover plate 312 covers a side of the square housing 311 away from the bolt 1 to be tested. Optionally, the cover plate 312 and the square housing 311 are fixedly connected by a fastener 7 such as a bolt.
Further, a sealing ring 313 is disposed between the square housing 311 and the cover plate 312.
Specifically, the permanent magnet assembly 4 includes a magnet base 41 and a permanent magnet 42, one end of the magnet base 41 is disposed at the end of the bolt 1 to be tested, the other end is disposed with a mounting groove 411, and the permanent magnet 42 is mounted in the mounting groove 411 and faces the sensor assembly 3. Specifically, the permanent magnet 42 is fixed in the mounting groove 411 by epoxy glue. Alternatively, the magnet base 41 is screwed to the end of the bolt 1 to be measured.
Alternatively, the magnet base 41 can be replaced according to the size of the bolt 1 to be measured without replacing the sensor assembly 3, while facilitating adjustment at the time of installation.
Specifically, the permanent magnet 42 faces the hall sensor. Preferably, the distance between the permanent magnet 42 and the Hall sensor is kept between 0.5 mm and 1mm, so that on one hand, available clearance is provided for fine adjustment; on the other hand, the measurement error caused by friction caused by hard contact is avoided.
Preferably, in the present embodiment, both the hall sensor and the permanent magnet 42 are disposed on the center line of the bolt 1 to be measured. Specifically, in the present embodiment, the circuit board 32 and the permanent magnet 42 are aligned with the center line of the bolt 1 to be measured, the hall sensor is disposed at the center position of the circuit board 32, the center position of the housing 311 is provided with a mounting hole 314 for mounting the hall sensor, and the hall sensor is accommodated in the mounting hole 314.
Specifically, one side of the square housing 311 is provided with a plug-in structure 3111, one end of the plug-in structure 3111 located inside the square housing 311 is electrically connected to the circuit board 32, and the other end extends out of the square housing 311 and is connected to an external monitoring system. Alternatively, the card structure 3111 is provided on one of the other two sides of the square housing 311 to which the support plate 5 is not connected.
Further, the support plate 5 is provided with an elongated hole 51, the housing 31 is provided with a fastening hole 3112, and the elongated hole 51 and the fastening hole 3112 are penetrated by the fastening member 7. The length direction of the elongated hole 51 is parallel to the axial direction of the bolt 1 to be tested. The height of the supporting plate 5 can be adjusted by arranging the elongated hole 51, so that the bolt to be tested 1 with different lengths can be adapted.
Alternatively, the band 6 may be a throat band. The setting up of ferrule 6 is on the one hand with backup pad 5 closely laminating on the outer hexagonal side of nut 2 for when nut 2 was rotatory, backup pad 5 followed nut 2 and is rotated together, and sensor module 3 takes place rotatoryly together with backup pad 5, can realize the response to the displacement of nut 2. The hose clamp type fixing is stable and convenient to adjust and maintain.
The bolt looseness monitoring device provided by the utility model has the following monitoring process: when 2 influences that cause because of the outside anomaly of nut, no matter bolt 1 is not hard up or nut 2 is not hard up, relative angular displacement can be measured and the feedback is to outside monitoring system for example host computer to sensor module 3, and the host computer passes through matrix or atlas analysis real-time supervision, just can produce the early warning when reaching the not hard up angle of early warning, reminds the engineer to need consolidate the nut 2 of here, inspects adjacent nut simultaneously or maintains the inspection to whole equipment.
The bolt looseness monitoring device can monitor bolts in real time in a non-contact mode, does not affect normal work of a fan, and is high in monitoring precision, simple to operate and convenient to maintain.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a bolt not hard up monitoring devices for the elasticity state of monitoring the bolt that awaits measuring, the bolt that awaits measuring wears to locate two connecting pieces that need to connect, and a nut cover is established the tip of the bolt that awaits measuring, its characterized in that includes: the sensor assembly, the permanent magnet assembly, the support plate and the hoop;
the backup pad includes two, sets up respectively sensor component's both sides, two the backup pad passes through the hoop is established the outside of nut, permanent magnet subassembly one end sets up the tip of bolt that awaits measuring, the other end orientation sensor component.
2. The bolt looseness monitoring device according to claim 1, wherein the sensor assembly comprises a housing, a circuit board and a hall sensor, the circuit board is arranged in the housing, the hall sensor is arranged on one side, facing the permanent magnet assembly, of the circuit board, and the two support plates are fixedly connected with two sides of the housing.
3. The bolt looseness monitoring device according to claim 2, wherein the permanent magnet assembly comprises a magnet base and a permanent magnet, one end of the magnet base is arranged at the end portion of the bolt to be tested, the other end of the magnet base is provided with a mounting groove, and the permanent magnet is placed in the mounting groove and faces the Hall sensor.
4. The bolt looseness monitoring device according to claim 2, wherein the housing includes a square housing and a cover plate, the circuit board is disposed in the square housing, and the cover plate covers a side of the square housing facing away from the bolt to be tested.
5. A bolt loosening monitoring device according to claim 4, wherein a sealing ring is further provided between the square housing and the cover plate.
6. The bolt looseness monitoring device according to claim 5, wherein a plug-in structure is arranged on one side of the square shell, one end of the plug-in structure, located inside the square shell, is electrically connected with the circuit board, and the other end of the plug-in structure extends out of the square shell and is connected with an external monitoring system.
7. The bolt looseness monitoring device according to claim 2, wherein an elongated hole is provided in the support plate, a fastening hole is provided in the housing, and a fastening member is inserted into the elongated hole and the fastening hole.
8. A bolt loosening monitoring device as claimed in any one of claims 1 to 6, wherein the ferrule is a throat ferrule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121807787.4U CN216049775U (en) | 2021-08-04 | 2021-08-04 | Bolt looseness monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121807787.4U CN216049775U (en) | 2021-08-04 | 2021-08-04 | Bolt looseness monitoring device |
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| CN216049775U true CN216049775U (en) | 2022-03-15 |
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| CN202121807787.4U Active CN216049775U (en) | 2021-08-04 | 2021-08-04 | Bolt looseness monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325929A (en) * | 2022-07-20 | 2022-11-11 | 山东大学 | Device and method for detecting fastener loosening based on magnetic field change and robot |
-
2021
- 2021-08-04 CN CN202121807787.4U patent/CN216049775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325929A (en) * | 2022-07-20 | 2022-11-11 | 山东大学 | Device and method for detecting fastener loosening based on magnetic field change and robot |
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