Fastener state monitoring suite

Abstract

The utility model relates to a fastener state monitoring suite. The fastener state monitoring suite comprises a monitoring cover, a connecting seat and at least one limiting rod, a monitoring sensing chip is arranged in the monitoring cover, a bearing is mounted on the lower end wall of the monitoring cover, and the monitoring cover is further provided with at least one connecting part; the connecting seat comprises a connecting bulge and a connecting magnetic seat; the connecting bulge is connected to the lower end wall of the monitoring cover through a bearing; an induction magnetic pole is arranged on the connecting bulge; the connecting magnetic seat is used for magnetically attracting bolts or nuts; one end of the limiting rod is connected with the connecting part, the other end of the limiting rod is fixedly connected with the workpiece, and rotation of the monitoring cover is limited through the limiting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial monitoring, in particular to a fastener state monitoring kit. Background Art

[0002] Fasteners generally refer to parts such as bolts and nuts that stabilize connections. In a bolted connection, tightening the nut actually stretches the bolt, just like pulling a spring. This pulling or tensioning force creates an opposing clamping force that holds the two parts of the workpiece tightly together; if the bolt or nut becomes loose, the clamping force will weaken.

[0003] The connection of fasteners such as bolts and nuts is an important assembly method of wind turbines, involving almost all parts of wind turbines. Therefore, the quality of the bolts or nuts themselves and the subsequent regular monitoring are important guarantees for the reliable operation of wind turbines. As more and more wind turbines enter the aging period, the quality problems of the connecting bolts of the units are gradually highlighted. Major accidents such as the collapse of wind towers caused by the loosening of bolts or nuts occur from time to time. It can be seen that the loosening of fasteners such as bolts or nuts on wind turbines poses great safety hazards and economic losses. Utility Model Content

[0004] In view of this, the utility model provides a fastener status monitoring kit, which is used to solve the problem of safety accidents and economic losses caused by the inability to monitor the loosening of bolts or nuts in the prior art.

[0005] In order to achieve one, part or all of the above purposes or other purposes, the utility model proposes:

[0006] A fastener condition monitoring kit is used to monitor bolts or nuts installed on a workpiece, and the fastener condition monitoring kit includes a monitoring cover, a connecting seat and at least one limiting rod;

[0007] A monitoring sensor chip is provided inside the monitoring cover, a bearing is installed on the lower end wall of the monitoring cover, and the monitoring cover is also provided with at least one connecting portion;

[0008] The connecting seat comprises a connecting protrusion and a connecting magnetic seat, wherein the connecting protrusion is connected to the lower end wall of the monitoring cover through the bearing; an induction magnetic pole is provided on the connecting protrusion; and the connecting magnetic seat is used to magnetically attract the bolt or nut;

[0009] One end of the limiting rod is connected to the connecting portion, and the other end of the limiting rod is fixedly connected to the workpiece, so that the monitoring cover is restricted from rotating by the limiting rod.

[0010] Furthermore, the lower end wall of the monitoring cover is provided with a groove for installing the monitoring sensor chip, and the groove is centrally arranged.

[0011] Furthermore, the monitoring cover has a boss extending radially, the connecting portion is a connecting hole opened on the boss, the cross-sectional shape of the connecting hole is the same as the cross-sectional shape of the limiting rod, and one end of the limiting rod is arranged through the connecting hole.

[0012] Furthermore, the cross-sectional shape of the limiting rod may be plum blossom-shaped, circular or polygonal.

[0013] Furthermore, a fixed magnetic seat is provided at the other end of the limit rod, and the fixed magnetic seat is magnetically connected to the workpiece.

[0014] Furthermore, the connection protrusion is provided with a threaded hole, the connection magnetic base is provided with a threaded column connected to the threaded hole, and the connection magnetic base is magnetically attracted to the end wall of the bolt or nut.

[0015] Furthermore, the connecting magnetic base includes at least three side buckles, and the at least three side buckles are distributed on the outer edge of the lower end wall of the connecting protrusion, and the inner wall of the side buckle is used to abut the side wall of the bolt or nut.

[0016] Furthermore, the side buckles are provided with connecting magnetic blocks.

[0017] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0018] The fastener condition monitoring kit installs a connecting magnetic base with an induction magnetic pole on the bolt or nut, so that when the bolt or nut becomes loose, the connecting magnetic base will rotate accordingly, causing the magnetic field of the induction magnetic pole to change. The monitoring sensor chip fixed on the monitoring cover can capture the magnetic field change of the induction magnetic pole to determine whether the bolt is loose. Since the monitoring cover is connected to the connecting magnetic base through a bearing and the monitoring cover itself is restricted by the limit rod and cannot rotate, the monitoring sensor chip on the monitoring cover can accurately obtain the magnetic field change of the induction magnetic pole. In general, the fastener condition monitoring kit is directly installed on the inspected bolt or nut to monitor the inspected bolt or nut. When the bolt or nut becomes loose, the monitoring sensor chip can detect the looseness of the bolt through the angle change of the induction magnetic pole and send an alarm to the staff for maintenance, thereby avoiding the occurrence of safety accidents and eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the assembly of a fastener condition monitoring kit in one embodiment of the present application. Figure 1 ;

[0021] Figure 2 The explosion of the fastener condition monitoring kit in one embodiment of the present application Figure 1 ;

[0022] Figure 3 The explosion of the fastener condition monitoring kit in one embodiment of the present application Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the assembly of a fastener condition monitoring kit in one embodiment of the present application. Figure 2 ;

[0024] Figure 5 The explosion of the fastener condition monitoring kit in one embodiment of the present application Figure 3 .

[0025] Reference numerals:

[0026] 1 monitoring cover, 10 connecting hole, 2 connecting seat, 20 connecting protrusion, 21 connecting magnetic seat, 210 threaded column, 211 side buckle, 212 connecting magnetic block, 3 limit rod, 30 fixed magnetic seat, 4 bearing, 5 induction magnetic pole, 6 monitoring sensor chip, 7 bolt, 8 workpiece. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0030] See attached Figure 1 - Attachment Figure 3 The present embodiment discloses a fastener status monitoring kit for monitoring bolts 7 or nuts installed on a workpiece 8. The fastener status monitoring kit includes a monitoring cover 1, a connecting seat 2 and at least one limit rod 3; a monitoring sensor chip 6 is provided inside the monitoring cover 1, a bearing 4 is installed on the lower end wall of the monitoring cover 1, and the monitoring cover 1 is also provided with at least one connecting portion; the connecting seat 2 includes a connecting protrusion 20 and a connecting magnetic seat 21, and the connecting protrusion 20 is connected to the lower end wall of the monitoring cover 1 through the bearing 4; an induction magnetic pole 5 is provided on the connecting protrusion 20; the connecting magnetic seat 21 is used to magnetically attract bolts 7 or nuts; one end of the limit rod 3 is connected to the connecting portion, and the other end of the limit rod 3 is fixedly connected to the workpiece 8, and the rotation of the monitoring cover 1 is limited by the limit rod 3.

[0031] Specifically, the fastener status monitoring kit is mainly used to monitor fasteners such as bolts 7 and nuts installed on the workpiece 8. For the convenience of explanation, this embodiment is described with the inspected fastener as the bolt 7. The lower end wall of the monitoring cover 1 is provided with a groove for installing the monitoring sensor chip 6. The groove is centrally arranged. The monitoring sensor chip 6 is fixed in the groove by resin packaging, and the monitoring sensor chip 6 is arranged corresponding to the inductive magnetic pole 5 on the connecting protrusion 20. The monitoring sensor chip 6 can use an angle sensor to capture the relative angle change of the magnetic field generated by the inductive magnetic pole 5 for judgment; the connecting magnetic base 21 is connected to the monitoring cover 1 through the bearing 4, so that the connecting magnetic base 21 can rotate relative to the monitoring cover 1, that is, when the connecting magnetic base 21 rotates, the monitoring cover 1 will not rotate, and the connecting magnetic base 21 and the bolt 7 are fixed by magnetic attraction, that is, when the bolt 7 is loose, it will drive the connecting magnetic base 21 to rotate together. At this time, The monitoring sensor chip 6 of the monitoring cover 1 can capture the relative angle change of the inductive magnetic pole 5 to determine whether the bolt 7 is loose; in order to prevent the monitoring cover 1 from rotating with the connecting magnetic base 21 during use, a boss is extended radially in the monitoring cover 1, and the connecting part is a connecting hole 10 opened on the boss. The cross-sectional shape of the connecting hole 10 is the same as the cross-sectional shape of the limiting rod 3. One end of the limiting rod 3 is arranged to pass through the connecting hole 10, and the other end of the limiting rod 3 is fixedly connected to the surface of the workpiece 8. The monitoring cover 1 cannot rotate through the limiting rod 3, ensuring that the monitoring sensor chip 6 on the monitoring cover 1 can accurately capture the magnetic field change of the inductive magnetic pole 5 and generate a corresponding angle change value; the monitoring sensor chip 6 can transmit the angle change value to the background center wirelessly or wiredly, so that the staff can obtain the information of the loosening of the bolt 7 for maintenance, thereby avoiding safety accidents and eliminating safety hazards.

[0032] In summary, the fastener status monitoring kit installs a connecting magnetic base 21 with an inductive magnetic pole 5 on the bolt 7 or the nut, so that when the bolt 7 or the nut becomes loose, the connecting magnetic base 21 will rotate accordingly, causing the magnetic field of the inductive magnetic pole 5 to change, and the monitoring sensor chip 6 fixed on the monitoring cover 1 can capture the magnetic field change of the inductive magnetic pole 5 to determine whether the bolt 7 is loose. Since the monitoring cover 1 is connected to the connecting magnetic base 21 through the bearing 4, and the monitoring cover 1 itself is restricted by the limit rod 3 and cannot rotate, the monitoring sensor chip 6 on the monitoring cover 1 can accurately obtain the magnetic field change of the inductive magnetic pole 5. In general, the fastener status monitoring kit is directly installed on the inspected bolt 7 or nut to monitor the inspected bolt 7 or nut. When the bolt 7 or the nut becomes loose, the monitoring sensor chip 6 can obtain the looseness of the bolt 7 through the angle change of the inductive magnetic pole 5, and send an alarm to the staff for maintenance, thereby avoiding the occurrence of safety accidents and eliminating safety hazards.

[0033] Specifically, the cross-sectional shape of the limiting rod 3 may be plum blossom-shaped, circular or polygonal. In this embodiment, the limiting rod 3 having a plum blossom-shaped cross-sectional shape is preferably used to enhance the circumferential stability between the limiting rod 3 and the connecting hole 10 and avoid relative rotation due to a large gap between the limiting rod 3 and the connecting hole 10.

[0034] In order to achieve a fixed connection between the limit rod 3 and the workpiece 8 without damaging the surface of the workpiece 8, a fixed magnetic seat 30 is provided at the other end of the limit rod 3. The fixed magnetic seat 30 is magnetically connected to the workpiece 8. The fixed magnetic seat 30 on the limit rod 3 is strongly magnetically attracted to the workpiece 8 to improve the connection stability between the limit rod 3 and the workpiece 8, thereby preventing the monitoring cover 1 from rotating when the connecting magnetic seat 21 rotates.

[0035] See attached Figure 2 A threaded hole is provided on the connecting protrusion 20, and a threaded column 210 connected to the threaded hole is provided on the connecting magnetic base 21. The connecting magnetic base 21 is magnetically attracted to the end wall of the bolt 7. This method is conducive to installing the fastener status monitoring kit on the bolt 7 or nut with a flat end wall.

[0036] See attached Figure 4 and attached Figure 5 In other embodiments, the connecting magnetic base 21 includes three side buckles 211, and the three side buckles 211 are distributed on the outer edge of the lower end wall of the connecting protrusion 20. The inner wall of the side buckle 211 is used to abut the side wall of the bolt 7 or the nut, and a connecting magnetic block 212 is provided on the side buckle 211 to improve the connection stability between the side buckle 211 and the side wall of the bolt 7; by connecting the magnetic block 212 and multiple side buckles 211 to fit the side wall of the bolt 7, the fastener status monitoring kit can be applicable to bolts 7 or nuts with uneven end walls, thereby improving the scope of application of the fastener status monitoring kit.

[0037] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model 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 utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A fastener condition monitoring kit for monitoring bolts or nuts installed on a workpiece, characterized in that: The fastener condition monitoring kit comprises a monitoring cover, a connecting seat and at least one limiting rod; A monitoring sensor chip is provided inside the monitoring cover, a bearing is installed on the lower end wall of the monitoring cover, and the monitoring cover is also provided with at least one connecting portion; The connecting seat comprises a connecting protrusion and a connecting magnetic seat, wherein the connecting protrusion is connected to the lower end wall of the monitoring cover through the bearing; an induction magnetic pole is provided on the connecting protrusion; and the connecting magnetic seat is used to magnetically attract the bolt or nut; One end of the limiting rod is connected to the connecting portion, and the other end of the limiting rod is fixedly connected to the workpiece, so that the monitoring cover is restricted from rotating by the limiting rod.

2. A fastener condition monitoring kit according to claim 1, characterized in that: The lower end wall of the monitoring cover is provided with a groove for installing the monitoring sensor chip, and the groove is centrally arranged.

3. A fastener condition monitoring kit according to claim 2, characterized in that: The monitoring cover is radially extended with a boss, the connecting portion is a connecting hole opened on the boss, the cross-sectional shape of the connecting hole is the same as the cross-sectional shape of the limiting rod, and one end of the limiting rod is arranged through the connecting hole.

4. A fastener condition monitoring kit according to claim 3, characterized in that: The cross-sectional shape of the limiting rod can be plum blossom-shaped, circular or polygonal.

5. A fastener condition monitoring kit according to claim 3, characterized in that: The other end of the limiting rod is provided with a fixed magnetic seat, and the fixed magnetic seat is magnetically connected to the workpiece.

6. A fastener condition monitoring kit according to claim 1, characterized in that: The connection protrusion is provided with a threaded hole, the connection magnetic base is provided with a threaded column connected with the threaded hole, and the connection magnetic base is magnetically attracted to the end wall of the bolt or nut.

7. A fastener condition monitoring kit according to claim 1, characterized in that: The connecting magnetic base includes at least three side buckles, and the at least three side buckles are distributed on the outer edge of the lower end wall of the connecting protrusion, and the inner wall of the side buckle is used to abut the side wall of the bolt or nut.

8. A fastener condition monitoring kit according to claim 7, characterized in that: The side buckles are provided with connecting magnetic blocks.

Images