Bolt monitoring device

Abstract

The utility model discloses a bolt monitoring device, which comprises a signal acquisition substrate, an induction magnetic block and a magnetic induction signal sensor, the signal acquisition substrate is used for being installed on a flange, a signal acquisition hole used for avoiding a monitored bolt is formed in the signal acquisition substrate, the induction magnetic block is used for being connected to the monitored bolt, and the magnetic induction signal sensors are distributed around the signal acquisition hole in a surrounding mode; the magnetic induction signal sensor is electrically connected with the signal acquisition substrate, the magnetic induction signal sensor is in induction connection with the induction magnetic block, and the magnetic induction signal sensor is used for monitoring a magnetic field deflection signal of the induction magnetic block and sending the monitored signal to a monitoring service background. According to the embodiment of the utility model, the induction magnetic block arranged on the monitored bolt is in induction connection with the magnetic induction signal sensors distributed around the monitored bolt, and the magnetic induction signal sensors can monitor magnetic field deflection signals of the induction magnetic block in real time so as to judge whether the monitored bolt is loosened or fractured.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring equipment, in particular to a bolt monitoring device. Background Art

[0002] The assembly and fastening of large wind turbines, high-speed train generators, and steel transmission towers all utilize high-strength bolts and nuts. These bolts are subject to constant swaying in strong winds, and high-speed trains vibrate continuously during operation. These vibrations can cause the bolts to loosen. For large wind turbines, the tightening of the bolts directly impacts their performance; loosening or breakage can have catastrophic consequences.

[0003] Traditional methods and tools for checking bolts mainly include: First, workers will tighten the bolts with a wrench to ensure that they are tightened regardless of whether they are loose or not; or after the bolts are tightened for the first time, the tightening status is marked with a line on the bolt and nut respectively. When checking, it is only necessary to check whether the lines on the bolt and nut are aligned. If they are not aligned, tighten them until they are aligned.

[0004] However, traditional detection methods are labor-intensive, inefficient, and prone to false detections and missed detections. Therefore, a monitoring device with high detection efficiency and high detection accuracy is needed. Utility Model Content

[0005] In view of this, the utility model provides a bolt monitoring device for solving the problems of the bolt detection method in the prior art, such as large workload, low efficiency and easy misdetection and missed detection.

[0006] To achieve one, part, or all of the above purposes or other purposes, the present invention provides: a bolt monitoring device, comprising: a signal acquisition substrate, an induction magnetic block, and a magnetic induction signal sensor;

[0007] The signal acquisition substrate is used to be installed on the flange. The signal acquisition substrate is provided with a signal acquisition hole for avoiding the monitored bolt. The induction magnetic block is used to be connected to the side wall of the screw head or nut of the monitored bolt. A plurality of magnetic induction signal sensors are distributed around the signal acquisition hole with the axis of the monitored bolt as the axis.

[0008] The magnetic induction signal sensor is electrically connected to the signal acquisition substrate, and is inductively connected to the induction magnetic block. The magnetic induction signal sensor is used to monitor the magnetic field deflection signal of the induction magnetic block and send the monitored signal to the monitoring service background or terminal device.

[0009] Preferably, a plurality of magnetic fixing seats are provided on the signal acquisition substrate, and the magnetic fixing seats are used to be magnetically connected to the flange to fix the signal acquisition substrate on the flange.

[0010] Preferably, the magnetic fixing seat is connected to the bottom of the signal acquisition substrate through fixing bolts.

[0011] Preferably, the signal collection hole is installed coaxially with the monitored bolt.

[0012] Preferably, the inner diameter of the signal collection hole is larger than the outer diameters of the screw head and nut of the monitored bolt.

[0013] Preferably, several of the magnetic induction signal sensors respectively correspond to the side walls of the screw head or nut of the monitored bolt.

[0014] Preferably, a plurality of the signal collection holes are provided on the signal collection substrate, and positions of the plurality of the signal collection holes respectively correspond to the monitored bolts on the flange.

[0015] Preferably, the signal collection holes are arranged in a single row or multiple rows.

[0016] Preferably, the signal acquisition substrate is arc-shaped, and a plurality of the signal acquisition substrates are connected end to end to form a ring and are concentrically arranged with the flange.

[0017] Preferably, a data transmission line is connected between any two adjacent signal acquisition substrates.

[0018] The implementation of the present invention will have the following beneficial effects:

[0019] After adopting the above-mentioned bolt monitoring device, the induction magnet block set on the monitored bolt is inductively connected with the magnetic induction signal sensor distributed around the monitored bolt. The magnetic induction signal sensor can monitor the magnetic field deflection signal of the induction magnet block in real time to determine whether the monitored bolt is loose or broken, thereby greatly improving the detection efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] in:

[0022] Figure 1This is a schematic diagram of the overall structure of the bolt monitoring device proposed in the utility model;

[0023] Figure 2 This is a partial structural diagram of the bolt monitoring device proposed in the utility model;

[0024] Figure 3 This is a front view of the signal acquisition substrate of the bolt monitoring device proposed in the utility model;

[0025] Figure 4 This is a rear view of the signal acquisition substrate of the bolt monitoring device proposed in the present invention;

[0026] Figure 5 This is a front view of another embodiment of the signal acquisition substrate of the bolt monitoring device proposed by the present invention.

[0027] Figure numerals: 10, signal acquisition substrate; 11, signal acquisition hole; 12, magnetic fixing seat; 13, fixing bolt; 14, data transmission line; 20, induction magnetic block; 30, magnetic induction signal sensor; 40, flange; 50, monitored bolt. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this invention; the terms "including" and "having" and any variations thereof in the specification and claims of this invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" and the like in the specification and claims of this invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order.

[0029] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] like Figure 1-5 The following are examples provided by the present invention.

[0032] An embodiment of the present utility model provides a bolt monitoring device, comprising: a signal acquisition substrate 10, an induction magnet 20 and a magnetic induction signal sensor 30. The signal acquisition substrate 10 is used to be installed on a flange 40. A signal acquisition hole 11 is provided on the signal acquisition substrate 10 for avoiding the monitored bolt 50. The signal acquisition hole 11 is installed coaxially with the monitored bolt 50. The induction magnet 20 is used to be connected to the side wall of the screw head or nut of the monitored bolt 50. When the monitored bolt 50 is loose or broken, the position of the induction magnet 20 will also deflect and move accordingly. A plurality of magnetic induction signal sensors 30 are distributed around the signal acquisition hole 11 with the axis of the monitored bolt 50 as the axis center, and surround the induction magnet 20, so that the position of the induction magnet 20 can be sensed more accurately. The magnetic induction signal sensor 30 is electrically connected to the signal acquisition substrate 10, and the magnetic induction signal sensor 30 is inductively connected to the inductive magnet block 20. The magnetic induction signal sensor 30 is used to monitor the magnetic field deflection signal of the inductive magnet block 20. When the monitored bolt 50 is loose or broken, the position of the inductive magnet block 20 will also deflect and move accordingly. Several magnetic induction signal sensors 30 can timely sense the deflection and movement of the inductive magnet block 20 and send the monitored signal to the monitoring service background or terminal device for easy viewing by the staff. At the same time, an alarm can also be set to sound an alarm so that the staff can carry out maintenance or emergency repairs in time. After adopting the above-mentioned bolt monitoring device, the inductive magnet block 20 set on the monitored bolt 50 is inductively connected to the magnetic induction signal sensors 30 distributed around the monitored bolt 50. The magnetic induction signal sensor 30 can monitor the magnetic field deflection signal of the inductive magnet block 20 in real time to determine whether the monitored bolt 50 is loose or broken, thereby greatly improving the detection efficiency and accuracy.

[0033] Furthermore, the signal acquisition substrate 10 is provided with a plurality of magnetic fixing seats 12, which are connected to the bottom of the signal acquisition substrate 10 by fixing bolts 13. The magnetic fixing seats 12 are used to magnetically connect with the flange 40 to fix the signal acquisition substrate 10 on the flange 40. In order to make the connection between the signal acquisition substrate 10 and the flange 40 more secure, the magnetic fixing seats 12 are usually made of magnets with strong magnetism. The number of magnetic fixing seats 12 is generally not less than three, and they are distributed near the edges and corners of the signal acquisition substrate 10. In addition, the end surface of the magnetic fixing seat 12 in contact with the flange 40 should be flat to facilitate adsorption with the surface of the flange 40. It is worth mentioning that the thickness of the magnetic fixing seat 12 determines the height of the signal acquisition substrate 10 from the surface of the flange 40, as well as the distance between the magnetic induction signal sensor 30 on the signal acquisition substrate 10 and the induction magnet block 20 on the monitored bolt 50. In actual operation, magnetic fixing seats 12 of different thicknesses can be selected for adjustment and adaptation according to specific circumstances.

[0034] Furthermore, the inner diameter of the signal acquisition hole 11 is larger than the outer diameter of the screw head and the nut of the monitored bolt 50. Generally speaking, the inner diameter of the signal acquisition hole 11 only needs to be slightly larger than the outer diameter of the screw head and the nut of the monitored bolt 50, for example, larger than 3mm, 5mm, 10mm, etc. At the same time, each magnetic induction signal sensor 30 is generally arranged near the edge of the signal acquisition hole 11, so that the monitored bolt 50 can pass through completely, so that the signal acquisition substrate 10, which is more fragile than the flange 40, will not become a force plate for the monitored bolt 50, and the distance between the sensing magnetic block 20 and the magnetic induction signal sensor 30 will not be too far, so that the magnetic induction signal sensor 30 has a higher signal sensing intensity for the sensing magnetic block 20.

[0035] Furthermore, several magnetic induction signal sensors 30 respectively correspond to the side walls of the screw head or nut of the monitored bolt 50, and can more accurately sense the position of the induction magnetic block 20 set on the side wall of the screw head or nut of the monitored bolt 50. For example, if the monitored bolt 50 is a hexagonal bolt, and the induction magnetic block 20 is set on one of the side walls of the hexagonal bolt, then the number of magnetic induction signal sensors 30 is six, and they respectively correspond to the six side surfaces of the hexagonal bolt.

[0036] For details, please refer to Figure 1 As shown, the signal acquisition substrate 10 is arc-shaped, and several signal acquisition substrates 10 are connected end to end in a ring shape and are arranged concentrically with the flange 40. A signal acquisition circuit is set in each signal acquisition substrate 10, and a data transmission line 14 is connected between any two adjacent signal acquisition substrates 10, and a data bus can be set to connect with the monitoring service background or terminal equipment. The signal acquisition substrate 10 is provided with a plurality of signal acquisition holes 11, and the signal acquisition holes 11 are arranged in a single row or multiple rows. The positions of the plurality of signal acquisition holes 11 correspond to the monitored bolts 50 on the flange 40. For example, there is only one circle of fastening bolts on the surface of the blade fastening bolt flange 40 of the wind turbine, and the number of fastening bolts is 60. Then the design scheme of the signal acquisition substrate 10 at this time can be: ① 12 signal acquisition substrates 10 are provided, and 5 signal acquisition holes 11 are provided on each signal acquisition substrate 10; ② 10 signal acquisition substrates 10 are provided, and 6 signal acquisition holes 11 are provided on each signal acquisition substrate 10; ③ 20 signal acquisition substrates 10 are provided, and 3 signal acquisition holes 11 are provided on each signal acquisition substrate 10; ④ 6 signal acquisition substrates 10 are provided, and 10 signal acquisition holes 11 are provided on each signal acquisition substrate 10, and so on. Please refer to Figure 5 As shown, if there are multiple circles of fastening bolts on the surface of the flange 40, the signal collection substrate 10 can be designed into a style of multiple rows of signal collection holes 11.

[0037] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A bolt monitoring device, characterized in that: include: A signal acquisition substrate (10), an induction magnetic block (20) and a magnetic induction signal sensor (30); The signal acquisition substrate (10) is used to be installed on the flange (40); a signal acquisition hole (11) is provided on the signal acquisition substrate (10) for avoiding the monitored bolt (50); the induction magnetic block (20) is used to be connected to the side wall of the screw head or nut of the monitored bolt (50); a plurality of magnetic induction signal sensors (30) are distributed around the signal acquisition hole (11) with the axis of the monitored bolt (50) as the axis center; The magnetic induction signal sensor (30) is electrically connected to the signal acquisition substrate (10), and the magnetic induction signal sensor (30) is inductively connected to the induction magnetic block (20). The magnetic induction signal sensor (30) is used to monitor the magnetic field deflection signal of the induction magnetic block (20) and send the monitored signal to a monitoring service backend or a terminal device.

2. The bolt monitoring device according to claim 1, characterized in that: A plurality of magnetic fixing seats (12) are provided on the signal acquisition substrate (10), and the magnetic fixing seats (12) are used to be magnetically connected to the flange (40) to fix the signal acquisition substrate (10) on the flange (40).

3. The bolt monitoring device according to claim 2, characterized in that: The magnetic fixing seat (12) is connected to the bottom of the signal acquisition substrate (10) via a fixing bolt (13).

4. The bolt monitoring device according to claim 1, characterized in that: The signal collection hole (11) is coaxially mounted with the monitored bolt (50).

5. The bolt monitoring device according to claim 4, characterized in that: The inner diameter of the signal collection hole (11) is larger than the outer diameters of the screw head and nut of the monitored bolt (50).

6. The bolt monitoring device according to claim 1, characterized in that: A plurality of magnetic induction signal sensors (30) respectively correspond to the side walls of the screw head or nut of the monitored bolt (50).

7. The bolt monitoring device according to claim 1, characterized in that: The signal collection substrate (10) is provided with a plurality of signal collection holes (11), and the positions of the plurality of signal collection holes (11) respectively correspond to the monitored bolts (50) on the flange (40).

8. The bolt monitoring device according to claim 7, characterized in that: The signal collection holes (11) are arranged and distributed in a single row or multiple rows.

9. The bolt monitoring device according to claim 1, characterized in that: The signal acquisition substrate (10) is arc-shaped, and a plurality of the signal acquisition substrates (10) are connected end to end to form a ring shape and are arranged concentrically with the flange (40).

10. The bolt monitoring device according to claim 9, characterized in that: A data transmission line (14) is connected between any two adjacent signal acquisition substrates (10).

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