A fastener status monitoring sensor

Abstract

The utility model relates to a fastener state monitoring sensor, including base body, swing arm, conductive probe, conductive column and information storage module, conductive probe, conductive column and information storage module set up on the base body, and conductive probe and information storage module electric connection, and conductive column and information storage module electric connection, swing arm rotatably sets up on the base body, and the trigger area is formed on swing arm, and the trigger area is divided and forms a plurality of conductive blocks and a plurality of insulating blocks, and a plurality of conductive blocks, a plurality of insulating blocks are arranged and set up and form the arc structure in turn staggered, and each conductive block all with the conduction of conductive column, swing arm makes the conduction end of conductive probe switch between the state with the contact of conductive block and the state with the contact of insulating block through swing, when the conduction end of conductive probe contacts with conductive block, and the on-off state of conductive probe, conductive column, information storage module forms the switching frequency of conduction loop, information storage module is used for recording the switching frequency between conductive probe and conductive column.

Description

Technical Field

[0001] This utility model relates to the technical field of monitoring equipment, and in particular to a fastener condition monitoring sensor. Background Technology

[0002] Fasteners such as bolts and nuts are important connecting components, widely used in connecting parts of equipment. Monitoring the condition of fasteners is a crucial aspect of equipment safety monitoring. However, fastener monitoring typically involves periodic on-site inspections by technicians, which is labor-intensive, challenging, and makes it difficult to promptly identify potential safety risks. Utility Model Content

[0003] The purpose of this invention is to provide a fastener condition monitoring sensor that can remotely monitor the loosening state of fasteners, reducing the labor intensity and monitoring difficulty for inspectors, and enabling timely detection of fault points with safety risks.

[0004] The technical solution adopted by this utility model is as follows: a fastener condition monitoring sensor, including a base, a swing arm, a conductive probe, a conductive post, and an information storage module; the conductive probe, conductive post, and information storage module are disposed on the base, the conductive probe is electrically connected to the information storage module, and the conductive post is electrically connected to the information storage module; one end of the swing arm is a rotating end, and the other end of the swing arm is a fixed end, the swing arm is rotatably disposed on the base, a trigger area is formed on the swing arm, the trigger area is divided into several conductive blocks and several insulating blocks, the several conductive blocks and several insulating blocks are arranged alternately to form an arc structure, the center of the arc structure is located between the rotating end of the swing arm and the trigger area, and each conductive block is connected to the conductive post; the swing arm swings to switch the conductive end of the conductive probe between a state of contact with a conductive block and a state of contact with an insulating block, when the conductive end of the conductive probe contacts a conductive block, the conductive probe, conductive post, and information storage module form a conductive circuit; the information storage module is used to record the number of times the on / off state between the conductive probe and the conductive post is switched.

[0005] The working principle of this utility model is as follows: In use, this fastener condition monitoring sensor is connected and fixed to the fastener being monitored. The fixed end of the swing arm rests against the equipment surface, and the information storage module interacts with the external monitoring center. When the fastener loosens and rotates, the base is driven by the fastener to make a circular motion. The fixed end of the swing arm is relatively fixed to the equipment surface due to friction, causing the swing arm to rotate relative to the base. This causes the conductive end of the conductive probe to slide relative to the trigger area of ​​the swing arm, switching between contact with the conductive block and contact with the insulating block. This, in turn, causes the conductive probe and the conductive post to switch between a closed circuit and an open circuit. The information storage module records the number of times the closed circuit and open circuit states between the conductive probe and the conductive post, thereby calculating the rotation angle of the fastener due to loosening. This allows the external monitoring center to remotely monitor the loosening state of the fastener, reducing the labor intensity and monitoring difficulty for inspectors and enabling timely detection of fault points with safety risks.

[0006] Furthermore, in the fastener condition monitoring sensor described above, the swing arm has a sliding hole formed on it. The sliding hole is elongated, and its length direction is parallel to the length direction of the swing arm. The swing arm is fitted onto the conductive post through the sliding hole, allowing the swing arm to rotate and slide relative to the conductive post. It also includes an elastic element disposed between the swing arm and the conductive post, causing the fixed end of the swing arm to have a tendency to slide away from the conductive post. Through this design, the fixed end of the swing arm applies pressure to the equipment surface under the action of the elastic element, increasing the friction between the fixed end of the swing arm and the equipment surface, thereby improving the reliability and stability of this fastener condition monitoring sensor.

[0007] Furthermore, in the fastener condition monitoring sensor described above, a conductive area is formed on the wall of the sliding hole. This conductive area is connected to each conductive block, and it maintains contact with the conductive post located in the sliding hole. This design eliminates the need for cable connections between the conductive post and the conductive blocks in the trigger area of ​​the swing arm, making it more convenient to use.

[0008] Furthermore, in the fastener condition monitoring sensor described above, a first locking hole is formed on the substrate, located on the side of the conductive probe away from the conductive post; a second locking hole is formed on the swing arm, located between the fixed end of the swing arm and the trigger area, and the swing arm can slide to align the second locking hole with the first locking hole; a locking member is also included, which passes through both the first and second locking holes when the second locking hole and the first locking hole are aligned, thus fixing the swing arm relative to the substrate. When the fastener condition monitoring sensor is in storage or transportation, the locking member locks the swing arm in a retracted state; when the fastener condition monitoring sensor is installed, after the fastener condition monitoring sensor is connected and fixed to the fastener, the locking member is pulled out, allowing the swing arm to slide towards the equipment surface and abut against the equipment surface under the action of the elastic member, making the installation of the fastener condition monitoring sensor more convenient.

[0009] Furthermore, in the fastener condition monitoring sensor described above, an anti-retraction hole is formed on the swing arm. The anti-retraction hole is a metallized hole and is connected to the conductive post. The anti-retraction hole is located between the trigger area and the sliding hole. When the conductive post abuts against the end of the sliding hole away from the anti-retraction hole, the conductive end of the conductive probe is aligned with the anti-retraction hole, and the conductive end of the conductive probe is engaged in the anti-retraction hole under its own elasticity and is connected to the anti-retraction hole. With this design, when the fastener condition monitoring sensor is disassembled or the fastener breaks, the elastic element causes the swing arm to slide away from the conductive post to its farthest point. The conductive end of the conductive probe is engaged in the anti-retraction hole and is connected to the anti-retraction hole, preventing the swing arm from sliding back. At this time, the conductive probe, conductive post, and information storage module form a conductive circuit, and the number of switching times between the conductive probe and the conductive post recorded by the information storage module no longer increases.

[0010] Furthermore, in the fastener condition monitoring sensor described above, friction teeth are formed on the fixed end of the swing arm. This design increases the friction between the fixed end of the swing arm and the equipment surface, thereby improving the reliability and stability of the fastener condition monitoring sensor.

[0011] Furthermore, the fastener condition monitoring sensor described above also includes a housing with a mounting cavity formed inside, and a monitoring port communicating with the outer surface of the housing on the mounting cavity. The base, swing arm, conductive probe, conductive post, and information storage module are all disposed within the mounting cavity, and the fixed end of the swing arm extends out of the housing from the monitoring port. This design prevents the base, swing arm, conductive probe, conductive post, and information storage module from being directly exposed to the external environment, thus providing dust protection.

[0012] Furthermore, the fastener condition monitoring sensor described above also includes a hose clamp, which comprises a clamp body and a tightening member. The clamp body has a ring-shaped structure and is connected to the outer shell. The tightening member is disposed on the clamp body and is used to adjust the circumference of the clamp body. During installation, the clamp body is fitted onto the fastener, and the tightening member clamps the fastener by tightening the circumference of the clamp body, making it easy to connect and fix the fastener condition monitoring sensor to the monitored fastener, thus making installation more convenient and faster.

[0013] Furthermore, in the fastener condition monitoring sensor described above, the housing has a through hole, which is square, and friction teeth are formed on the edge of the hole opening. The hose clamp body is inserted into the through hole, and the inner annular surface of the clamp body abuts against the friction teeth. During installation, the housing is sandwiched between the fastener and the clamp body, making the connection structure between the housing and the fastener more stable. In addition, after the fastener condition monitoring sensor is installed on the fastener, the friction teeth design increases the friction between the housing and the clamp body, preventing the housing from sliding relative to the clamp body and improving the reliability and stability of this fastener condition monitoring sensor.

[0014] Furthermore, as described above, the fastener condition monitoring sensor includes a passive antenna mounted on its substrate, which is electrically connected to the information storage module. In use, an external read / write device wirelessly interacts with the information recording module via the passive antenna and supplies power to the module. This eliminates the need for separate wiring, making installation more convenient.

[0015] The beneficial effects of this utility model are: it can remotely monitor the loosening status of fasteners, reducing the labor intensity and monitoring difficulty of inspectors, and can promptly detect fault points with safety risks. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment; Figure 2 This is the main view of the embodiment; Figure 3 This is a front view of the embodiment after the first cover has been removed; Figure 4 This is a front view of the embodiment after the first cover and swing arm have been removed; Figure 5 One of the three-dimensional structural diagrams of the swing arm in the embodiment; Figure 6 The second three-dimensional structural diagram of the swing arm is shown in the embodiment.

[0017] Explanation of reference numerals in the attached figures: 1-Base; 11-First locking hole; 2-Swing arm; 21-Trigger area; 211-Conductive block; 212-Insulating block; 22-Sliding hole; 221-Conductive area; 23-Second locking hole; 24-Anti-retraction hole; 25-Friction tooth; 3-Conductive probe; 4-Conductive post; 5-Information storage module; 6-Outer shell; 61-Base plate; 62-First cover; 621-Third locking hole; 622-Reset hole; 63-Second cover; 64-Monitoring port; 65-Through hole; 651-Friction tooth segment; 7-Hose clamp; 71-Clamp body; 72-Tightening component; 8-Elastic component. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] like Figures 1 to 6 An embodiment of a fastener condition monitoring sensor includes a base 1, a swing arm 2, a conductive probe 3, a conductive post 4, and an information storage module 5. The conductive probe 3, conductive post 4, and information storage module 5 are disposed on the base 1. The conductive probe 3 is electrically connected to the information storage module 5, and the conductive post 4 is electrically connected to the information storage module 5. One end of the swing arm 2 is a rotating end, and the other end is a fixed end. The swing arm 2 is rotatably disposed on the base 1. A trigger area 21 is formed on the swing arm 2. The trigger area 21 is divided into several conductive blocks 211 and several insulating blocks 212. A number of insulating blocks 212 are arranged in an alternating pattern to form an arc-shaped structure. The center of the arc is located between the rotating end of the swing arm 2 and the trigger area 21. Each conductive block 211 is connected to the conductive post 4. The swing arm 2 swings to switch the conductive end of the conductive probe 3 between contacting the conductive block 211 and contacting the insulating block 212. When the conductive end of the conductive probe 3 contacts the conductive block 211, the conductive probe 3, the conductive post 4, and the information storage module 5 form a conductive circuit. The information storage module 5 is used to record the number of times the on / off state between the conductive probe 3 and the conductive post 4 is switched.

[0020] The working principle of this embodiment is as follows: In use, the fastener condition monitoring sensor is connected and fixed to the fastener being monitored. The fixed end of the swing arm 2 rests against the surface of the equipment, and the information storage module 5 interacts with the external monitoring center. When the fastener becomes loose and rotates, the base 1 is driven by the fastener to make a circular motion. The fixed end of the swing arm 2 is relatively fixed to the surface of the equipment due to friction, causing the swing arm 2 to rotate relative to the base 1. This causes the conductive end of the conductive probe 3 to slide relative to the trigger area 21 of the swing arm 2, so that the conductive end of the conductive probe 3 switches between contacting the conductive block 211 and contacting the insulating block 212. This causes the conductive probe 3 and the conductive post 4 to switch between a closed circuit state and an open circuit state. The information storage module 5 records the number of times the closed circuit state between the conductive probe 3 and the conductive post 4 is switched, thereby calculating the rotation angle of the fastener due to loosening. This allows the external monitoring center to remotely monitor the loosening state of the fastener, reducing the labor intensity and monitoring difficulty of the inspectors and enabling timely detection of fault points with safety risks.

[0021] like Figure 3 , Figure 5 and Figure 6 As shown, the swing arm 2 has a sliding hole 22, which is an elongated hole. The length direction of the sliding hole 22 is parallel to the length direction of the swing arm 2. The swing arm 2 is sleeved on the conductive post 4 through the sliding hole 22, so that the swing arm 2 can rotate and slide relative to the conductive post 4. An elastic element 8 is also included, which is disposed between the swing arm 2 and the conductive post 4, so that the fixed end of the swing arm 2 has a tendency to slide away from the conductive post 4. Through this design, under the action of the elastic element 8, the fixed end of the swing arm 2 applies pressure to the surface of the equipment, increasing the friction between the fixed end of the swing arm 2 and the surface of the equipment, thereby improving the reliability and stability of this fastener condition monitoring sensor.

[0022] like Figure 5 and Figure 6 As shown, a conductive region 221 is formed on the wall of the sliding hole 22. The conductive region 221 is in communication with each conductive block 211, and the conductive region 221 is in contact with the conductive post 4 located in the sliding hole 22. With this design, the conductive post 4 does not need to be connected to each conductive block 211 of the trigger area 21 of the swing arm 2 through a cable, making it more convenient to use.

[0023] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a first locking hole 11 is formed on the base 1, located on the side of the conductive probe 3 away from the conductive post 4; a second locking hole 23 is formed on the swing arm 2, located between the fixed end of the swing arm 2 and the trigger area 21. The swing arm 2 can slide so that the second locking hole 23 is aligned with the first locking hole 11; a locking element (not shown in the figure) is also included. When the second locking hole 23 is aligned with the first locking hole 11, the locking element is inserted into both the first locking hole 11 and the second locking hole 23, thus fixing the swing arm 2 relative to the base 1. When the fastener condition monitoring sensor is in storage or transportation, the locking element locks the swing arm 2 in a retracted state; when the fastener condition monitoring sensor is installed, after the fastener condition monitoring sensor is connected and fixed to the fastener, the locking element is pulled out, allowing the swing arm 2 to slide towards the device surface and abut against the device surface under the action of the elastic element 8, making the installation of the fastener condition monitoring sensor more convenient.

[0024] like Figure 3 , Figure 5 and Figure 6 As shown, an anti-retraction hole 24 is formed on the swing arm 2. The anti-retraction hole 24 is located between the trigger area 21 and the sliding hole 22. The anti-retraction hole 24 is a metallized hole and is connected to the conductive post 4. The anti-retraction hole 24 has an arc-shaped structure, and the center of the arc structure of the anti-retraction hole 24 is located on the side of the anti-retraction hole 24 closer to the sliding hole 22. When the conductive post 4 is pressed against the end of the sliding hole 22 away from the anti-retraction hole 24, the conductive end of the conductive probe 3 is directly opposite the anti-retraction hole 24, and the conductive end of the conductive probe 3 is inserted into the anti-retraction hole 24 under its own elastic action and is connected to the anti-retraction hole 24. With this design, when the fastener condition monitoring sensor is disassembled or the fastener breaks, under the action of the elastic element 8, the swing arm 2 slides away from the conductive post 4 to its farthest point. At this point, the conductive end of the conductive probe 3 is engaged in the anti-retraction hole 24 to prevent the swing arm 2 from sliding back. At this time, the conductive probe 3, the conductive post 4, and the information storage module 5 form a conductive circuit, and the number of switching times between the conductive probe 3 and the conductive post 4 recorded by the information storage module 5 no longer increases. In addition, in this embodiment, the edge of one opening of the anti-retraction hole 24 is connected to each conductive block 211 of the trigger area 21. A conductive layer is provided in the substrate 1, which connects the anti-retraction hole 24 to the conductive area 221 on the sliding hole 22, making the connection between the conductive post 4 and each conductive block 211 of the trigger area 21 more convenient.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, friction teeth 25 are formed on the fixed end of the swing arm 2. When fasteners are installed, additional materials such as anti-loosening adhesive are usually applied. These additional materials form a coating on the surface of the equipment around the fastener. The friction teeth 25 can increase the friction between the fixed end of the swing arm 2 and the coating on the surface of the equipment, thereby improving the reliability and stability of this fastener condition monitoring sensor.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment also includes a housing 6, which includes a base plate 61 and a first cover 62. The base plate 61 and the first cover 62 enclose a mounting cavity. A monitoring port 64 communicating with the outer surface of the housing 6 is formed on the mounting cavity. A third locking hole 621 and a reset hole 622 are formed on the first cover 62. The third locking hole 621 is directly opposite to the first locking hole 11, and the reset hole 622 is directly opposite to the conductive probe 3. The reset hole 622 is used to provide a reset operation channel when the conductive probe 3 is inserted into the anti-retraction hole 24. The base 1, the swing arm 2, the conductive probe 3, the conductive post 4, and the information storage module 5 are all disposed in the mounting cavity. The fixed end of the swing arm 2 extends out of the housing 6 from the monitoring port 64. When the second locking hole 23 is directly opposite to the first locking hole 11, the locking member is simultaneously inserted into the first locking hole 11, the second locking hole 23, and the third locking hole 621. This design prevents the base 1, swing arm 2, conductive probe 3, conductive column 4, and information storage module 5 from being directly exposed to the external environment, thus providing dust protection. In addition, the monitoring port 64 can also limit the swing amplitude of the swing arm 2.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment also includes a hose clamp 7, which includes a clamp body 71 and a tightening member 72. The clamp body 71 has a ring structure and is connected to the outer shell 6. The tightening member 72 is disposed on the clamp body 71 and is used to adjust the circumference of the clamp body 71. During installation, the clamp body 71 is fitted onto the fastener, and the tightening member 72 clamps the fastener by tightening the circumference of the clamp body 71, causing the clamp body 71 to deform as shown. Figure 1 The hexagonal structure shown allows this fastener condition monitoring sensor to be easily connected and fixed to the fastener being monitored, making installation more convenient and faster.

[0028] like Figure 1As shown, the outer casing 6 also includes a second cover 63, which, together with the base plate 61, forms a through hole 65. The through hole 65 is a square hole, and friction tooth segments 651 are formed on the second cover 63 along the edges of the two openings of the through hole 65. The clamp 71 of the hose clamp 7 passes through the through hole 65, and the inner annular surface of the clamp 71 abuts against the friction tooth segments 651. During installation, the second cover 63 of the outer casing 6 is sandwiched between the fastener and the clamp 71, making the connection structure between the outer casing 6 and the fastener more stable. In addition, after the fastener condition monitoring sensor is installed on the fastener, the design of the friction tooth segments 651 increases the friction between the outer casing 6 and the clamp 71, preventing the outer casing 6 from sliding relative to the clamp 71, and improving the reliability and stability of this fastener condition monitoring sensor.

[0029] A passive antenna is installed inside the base 1, and the passive antenna is electrically connected to the information storage module 5. In use, the external read / write device wirelessly interacts with the information recording module through the passive antenna and supplies power to the information storage module 5, so that this fastener status monitoring sensor does not require separate wiring, making installation more convenient.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A fastener condition monitoring sensor, characterized in that: The device includes a substrate, a swing arm, a conductive probe, a conductive post, and an information storage module. The conductive probe, conductive post, and information storage module are mounted on the substrate. The conductive probe and the information storage module are electrically connected. One end of the swing arm is a rotating end, and the other end is a fixed end. The swing arm is rotatably mounted on the substrate and has a trigger area. The trigger area is divided into several conductive blocks and several insulating blocks. These conductive and insulating blocks are arranged alternately to form an arc-shaped structure. The center of the arc is located between the rotating end of the swing arm and the trigger area. Each conductive block is connected to the conductive post. The swing arm swings, causing the conductive end of the conductive probe to switch between contact with a conductive block and contact with an insulating block. When the conductive end of the conductive probe contacts a conductive block, the conductive probe, conductive post, and information storage module form a conductive circuit. The information storage module records the number of times the on / off state between the conductive probe and the conductive post is switched.

2. The fastener condition monitoring sensor as described in claim 1, characterized in that: The swing arm has a sliding hole, which is an elongated hole. The length direction of the sliding hole is parallel to the length direction of the swing arm. The swing arm is sleeved on the conductive post through the sliding hole, so that the swing arm can rotate and slide relative to the conductive post. It also includes an elastic element, which is disposed between the swing arm and the conductive post, so that the fixed end of the swing arm has a tendency to slide away from the conductive post.

3. The fastener condition monitoring sensor as described in claim 2, characterized in that: A conductive region is formed on the wall of the sliding hole. The conductive region is connected to each conductive block and is in contact with the conductive post in the sliding hole.

4. A fastener condition monitoring sensor as described in claim 2, characterized in that: A first locking hole is formed on the substrate, and the first locking hole is located on the side of the conductive probe away from the conductive post; a second locking hole is formed on the swing arm, and the second locking hole is located between the fixed end of the swing arm and the trigger area. The swing arm can slide so that the second locking hole is aligned with the first locking hole; a locking member is also included. When the second locking hole is aligned with the first locking hole, the locking member is inserted into both the first and second locking holes, so that the swing arm is fixed relative to the substrate.

5. A fastener condition monitoring sensor as described in claim 2, characterized in that: An anti-retraction hole is formed on the swing arm. The anti-retraction hole is a metallized hole and is connected to the conductive post. The anti-retraction hole is located between the trigger area and the sliding hole. When the conductive post is pressed against the end of the sliding hole away from the anti-retraction hole, the conductive end of the conductive probe is aligned with the anti-retraction hole, and the conductive end of the conductive probe is inserted into the anti-retraction hole under its own elasticity and is connected to the anti-retraction hole.

6. The fastener condition monitoring sensor as described in claim 1, characterized in that: Friction teeth are formed on the fixed end of the swing arm.

7. A fastener condition monitoring sensor as described in claim 1, characterized in that: It also includes an outer shell, with an installation cavity formed inside the outer shell, and a monitoring port formed on the installation cavity that communicates with the outer surface of the outer shell; the base, swing arm, conductive probe, conductive column and information storage module are all set in the installation cavity, and the fixed end of the swing arm extends out of the outer shell from the monitoring port.

8. A fastener condition monitoring sensor as described in claim 7, characterized in that: It also includes a hose clamp, which consists of a clamp body and a tightening member; the clamp body is a ring structure and is connected to the outer shell; the tightening member is set on the clamp body and is used to adjust the circumference of the clamp body.

9. A fastener condition monitoring sensor as described in claim 8, characterized in that: The outer shell has a through hole, which is a square hole, and a friction tooth segment is formed on the edge of the through hole opening; the hose clamp body is inserted into the through hole, and the inner ring surface of the clamp body abuts against the friction tooth segment.

10. A fastener condition monitoring sensor as described in claim 1, characterized in that: A passive antenna is mounted on the substrate, and the passive antenna is electrically connected to the information storage module.

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