Bolt fastening degree online monitoring and early warning system

Abstract

The utility model relates to a bolt fastening degree on-line monitoring and early warning system, which comprises angle monitoring modules, a data acquisition module, a data communication module and an on-line early warning module, a plurality of angle monitoring modules are arranged, each angle monitoring module comprises an upper magnetic ring, a lower magnetic ring and a Hall sensing probe, the upper magnetic ring is fixed at the top of a bolt, and the lower magnetic ring is fixed at the bottom of the bolt. The lower magnetic ring is fixed on a bolt installation flange face, the Hall sensing probe is fixed on a nut, a plurality of third strong magnets are arranged on the upper magnetic ring and the lower magnetic ring in the circumferential direction, and the Hall sensing probe is used for monitoring magnetic field direction change of the upper magnetic ring and the lower magnetic ring. The Hall sensing probe is used for monitoring the loosening angle of the nut and the screw rod by monitoring the magnetic field direction change of the upper magnetic ring and the lower magnetic ring, the Hall sensing probe is in communication connection with the data acquisition module, and the data acquisition module is connected with the online early warning module through the data communication module. According to the utility model, the loosening angle between the bolt and the nut can be directly and accurately reflected, and the on-line monitoring of the fastening degree of the bolt is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring device technical field, concretely relates to a bolt fastening degree on -line monitoring early warning system. BACKGROUND

[0002] Wind power, hydropower station, dam, nuclear power station, bridge, crane, airport, station, venue large -scale steel structure building field, or electric power, aviation, traffic, petroleum chemical industry, building etc. field, will use bolt fastening, and bolt fastening is also the key of equipment reliable operation, and the phenomenon of major accident of the whole equipment caused by bolt loosening in turn because of various reasons is endless, and the loss is huge. Therefore, in the equipment maintenance process, it is necessary to monitor the use of fastener frequently and continuously.

[0003] The prior art lacks a device for monitoring fasteners, often relying on manual inspection, including knocking sound, visual inspection, and identification inspection. The above methods as traditional monitoring processes are often rough and inaccurate, and cannot timely monitor the cumulative loosening over a long period of time, while consuming a large amount of manpower. In special circumstances, such as special operating environment, special weather, and underwater environment, manual monitoring of such fasteners is also very difficult. SUMMARY

[0004] The utility model discloses a bolt fastening degree on -line monitoring early warning system, solves the above -mentioned problem that exists in the bolt fastening degree monitoring currently.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A bolt fastening degree on -line monitoring early warning system, including angle monitoring module, data acquisition module, data communication module and on -line early warning module, the angle monitoring module is provided with a plurality of, all install on corresponding bolt nut assembly, the angle monitoring module includes upper magnetic ring, lower magnetic ring, hall sensor probe, the upper magnetic ring is fixed at the bolt top, the lower magnetic ring is fixed on the bolt mounting flange surface, the hall sensor probe is fixed on the nut, a plurality of third strong magnet are arranged on the upper magnetic ring and the lower magnetic ring, the hall sensor probe is used for monitoring the magnetic field direction transformation of the upper magnetic ring and the lower magnetic ring, and the loosening angle of the nut and the screw rod is monitored by monitoring the magnetic field direction transformation of the upper magnetic ring and the lower magnetic ring, the hall sensor probe is connected with data acquisition module, and the data acquisition module is connected with the on -line early warning module through the data communication module.

[0007] Further, the lower magnetic ring is connected to the bolt mounting flange surface by the circumferentially arranged third strong magnet, and the surface of the lower magnetic ring in contact with the bolt mounting flange surface is provided with a friction interface layer.

[0008] Further, the bottom surface of the upper magnetic ring is provided with a threaded groove, and the upper magnetic ring is fixed to the top of the bolt through the threaded groove.

[0009] Further, the surface of the threaded groove in contact with the bolt is provided with a friction interface layer.

[0010] Further, the Hall sensor probe comprises a shell, a side strong magnet assembly, a top strong magnet assembly, an upper Hall sensor, a lower Hall sensor and a control module, the shell is provided with a nut mounting groove, the side strong magnet assembly is circumferentially arranged on the side wall of the nut mounting groove, the side strong magnet assembly is used for being adsorbed on the side wall of the nut, the top strong magnet assembly is arranged on the top of the nut mounting groove, the top strong magnet assembly is used for being adsorbed on the top surface of the nut, and the upper Hall sensor and the lower Hall sensor are arranged in the shell in a spaced mode and are connected with the control module.

[0011] Further, the side strong magnet assembly comprises a first soft magnetic piece and a first strong magnet, the first soft magnetic piece is connected with the side wall of the nut mounting groove, and the first strong magnet is connected with the first soft magnetic piece.

[0012] Further, the top strong magnet assembly comprises a second soft magnetic piece and a second strong magnet, the second soft magnetic piece is connected with the top surface of the nut mounting groove, and the second strong magnet is connected with the second soft magnetic piece.

[0013] The screw fastening degree online monitoring and early warning system has the following beneficial effects:

[0014] The screw fastening degree online monitoring and early warning system has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the principle block diagram of the bolt fastening degree online monitoring and early warning system of the utility model;

[0016] Figure 2 is the structural schematic diagram of the lower magnetic ring in the bolt fastening degree online monitoring and early warning system of the utility model;

[0017] Figure 3 is the structural schematic diagram of the upper magnetic ring in the bolt fastening degree online monitoring and early warning system of the utility model;

[0018] Figure 4 is the cross-sectional view of the Hall sensor probe in the bolt fastening degree online monitoring and early warning system of the utility model;

[0019] Figure 5 is the structural schematic diagram of the Hall sensor probe in the bolt fastening degree online monitoring and early warning system of the utility model.

[0020] The names corresponding to the marks in the figure are as follows:

[0021] 1, angle monitoring module, 11, upper magnetic ring, 111, thread groove, 12, lower magnetic ring, 13, Hall sensor probe, 131, shell, 132, side surface strong magnet assembly, 1321, first soft magnetic piece, 1322, first strong magnet, 133, top surface strong magnet assembly, 1331, second soft magnetic piece, 1332, second strong magnet, 134, upper Hall sensor, 135, lower Hall sensor, 137, nut mounting groove,

[0022] 2, data acquisition module,

[0023] 3, data communication module,

[0024] 4, online early warning module,

[0025] 5, third strong magnet. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.

[0027] As shown in Figures 1 to 5 , the utility model provides a bolt fastening degree online monitoring and early warning system, including angle monitoring module 1, data acquisition module 2, data communication module 3 and online early warning module 4. Angle monitoring module 1 is provided with multiple, and is installed on corresponding bolt nut assembly, specifically, angle monitoring module 1 includes upper magnetic ring 11, lower magnetic ring 12, Hall sensor probe 13.

[0028] Upper magnetic ring 11 is fixed at the top of bolt, specifically, Figure 3As shown, the bottom surface of the upper magnetic ring 11 is provided with a threaded groove 111, and the upper magnetic ring 11 is screwed and fixed on the top of the bolt through the threaded groove 111. In order to ensure the stable connection between the upper magnetic ring 11 and the bolt, a friction interface layer (not shown in the figure) is arranged on the surface of the threaded groove 111 in contact with the bolt, which can be a roughened surface or a coated friction material layer, so that the upper magnetic ring 11 will not displace relative to the bolt even under strong vibration conditions. A plurality of rectangular or arc-shaped third strong magnets 5 are arranged circumferentially on the upper magnetic ring 11 for generating a magnetic field.

[0029] The lower magnetic ring 12 is fixed on the bolt mounting flange surface, Figure 2 As shown, the lower magnetic ring 12 is also connected to the bolt mounting flange surface by the circumferentially arranged rectangular or arc-shaped third strong magnets 5. In order to ensure the stable connection between the lower magnetic ring 12 and the bolt mounting flange surface, a friction interface layer (not shown in the figure) is arranged on the surface of the lower magnetic ring 12 in contact with the bolt mounting flange surface, which can be a roughened surface or a coated friction material layer, so that the lower magnetic ring 12 will not displace relative to the flange surface even under strong vibration conditions. The lower magnetic ring 12 is also used for generating a magnetic field.

[0030] Figure 4 and Figure 5 As shown, the Hall sensor probe 13 is fixed on the nut for monitoring the direction transformation of the magnetic field of the upper magnetic ring 11 and the lower magnetic ring 12, so as to monitor the loosening angle of the nut and the bolt by monitoring the direction transformation of the magnetic field of the upper magnetic ring 11 and the lower magnetic ring 12. The Hall sensor probe 13 includes a shell 131, a side strong magnet assembly 132, a top strong magnet assembly 133, an upper Hall sensor 134, a lower Hall sensor 135 and a control module.

[0031] The shell 131 is provided with a nut mounting groove 137, and the side strong magnet assembly 132 is arranged circumferentially on the side wall of the nut mounting groove 137 and is used for being adsorbed on the side wall of the nut. Specifically, the side strong magnet assembly 132 includes a first soft magnetic member 1321 and a first strong magnet 1322, the first soft magnetic member 1321 is connected with the side wall of the nut mounting groove 137, and the first strong magnet 1322 is connected with the first soft magnetic member 1321 and is adsorbed on the side wall of the nut through the first strong magnet 1322.

[0032] The top strong magnet assembly 133 is arranged on the top of the nut mounting groove 137 and is used for being adsorbed on the top surface of the nut. Specifically, the top strong magnet assembly 133 includes a second soft magnetic member 1331 and a second strong magnet 1332, the second soft magnetic member 1331 is connected with the top surface of the nut mounting groove 137, and the second strong magnet 1332 is connected with the second soft magnetic member 1331 and is adsorbed on the top surface of the nut through the second strong magnet 1332.

[0033] By setting the first soft magnetic member 1321 and the second soft magnetic member 1331, the Hall sensor probe 13 is fixed on the nut with stronger fastening force. In addition, the soft magnetic material also plays a role in eliminating the influence of the two groups of strong magnets on the Hall sensor on the probe.

[0034] The upper Hall sensor 134 and the lower Hall sensor 135 are arranged in the shell 131 with a spacing and are connected with the control module. The upper Hall sensor 134 and the lower Hall sensor 135 are used to sense the change of the magnetic field direction of the upper magnetic ring 11 and the lower magnetic ring 12, and transmit the sensing signal to the control module.

[0035] The Hall sensor probe 13 is in communication connection with the data acquisition module 2, and the data acquisition module 2 is connected with the online early warning module 4 through the data communication module 3. When the Hall sensor probe 13 monitors that the magnetic field direction of the upper magnetic ring 11 and the lower magnetic ring 12 changes, it indicates that the nut and bolt are loose, and the Hall sensor probe 13 transmits the loosening signal to the data acquisition module 2. After the data acquisition module 2 processes the loosening signal, the processed signal is transmitted to the online early warning module 4 through the data communication module 3, and the online early warning module 4 sends an early warning signal to remind the relevant personnel to timely process the loosening bolt and nut assembly.

[0036] The bolt fastening degree online monitoring and early warning system of the utility model, through angle monitoring module 1 real-time monitoring bolt nut assembly's loosening angle, through data acquisition module 2, data communication module 3 and online early warning module 4 realize the collection, transmission and early warning of loosening information, can high frequency, continuously monitor the use of fastener, discover and handle bolt loosening problem in time, avoid the occurrence of major accidents.

[0037] Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art belong to the scope of protection of the utility model.

Claims

1. A bolt fastening degree online monitoring and early warning system, characterized in that: The angle monitoring module, the data acquisition module, the data communication module and the online early warning module are included, the angle monitoring module is provided with a plurality of, is installed on the corresponding bolt nut assembly, the angle monitoring module includes upper magnetic ring, lower magnetic ring, hall sensor probe, the upper magnetic ring is fixed on the bolt top, the lower magnetic ring is fixed on the bolt mounting flange surface, the hall sensor probe is fixed on the nut, a plurality of third strong magnets are arranged on the upper magnetic ring and the lower magnetic ring, the hall sensor probe is used for monitoring the magnetic field direction transformation of the upper magnetic ring and the lower magnetic ring, so as to monitor the loosening angle of the nut and the screw rod by monitoring the magnetic field direction transformation of the upper magnetic ring and the lower magnetic ring, the hall sensor probe is connected with the data acquisition module, the data acquisition module is connected with the online early warning module through the data communication module.

2. The bolt fastening degree online monitoring and early warning system according to claim 1, characterized in that: The lower magnetic ring is connected on the bolt mounting flange surface by the third strong magnet arranged circumferentially, one side of the lower magnetic ring and the bolt mounting flange surface is provided with a friction interface layer.

3. The bolt fastening degree online monitoring and early warning system according to claim 1, characterized in that: The bottom surface of the upper magnetic ring is provided with a threaded groove, and the upper magnetic ring is fixed on the bolt top through the threaded groove.

4. The bolt fastening degree online monitoring and early warning system according to claim 3, characterized in that: The surface of the threaded groove and the bolt is provided with a friction interface layer.

5. The bolt fastening degree online monitoring and early warning system according to claim 1, characterized in that: The hall sensor probe includes a shell, a side strong magnet assembly, a top strong magnet assembly, an upper hall sensor, a lower hall sensor and a control module, the shell is provided with a nut mounting groove, the side strong magnet assembly is circumferentially arranged on the side wall of the nut mounting groove, the side strong magnet assembly is used for adsorbing on the side wall of the nut, the top strong magnet assembly is arranged on the top of the nut mounting groove, the top strong magnet assembly is used for adsorbing on the top surface of the nut, the upper hall sensor and the lower hall sensor are arranged in the shell, and are connected with the control module.

6. The bolt fastening degree online monitoring and early warning system according to claim 5, characterized in that: The side strong magnet assembly includes a first soft magnetic piece and a first strong magnet, the first soft magnetic piece is connected with the side wall of the nut mounting groove, and the first strong magnet is connected with the first soft magnetic piece.

7. The bolt fastening degree online monitoring and early warning system according to claim 5, characterized in that: The top strong magnet assembly includes a second soft magnetic piece and a second strong magnet, the second soft magnetic piece is connected with the top surface of the nut mounting groove, and the second strong magnet is connected with the second soft magnetic piece.

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