Hall transmission detection device and monitoring system for bolt state

Abstract

The utility model discloses a Hall transmission detection device for a bolt state. The Hall transmission detection device comprises a detection sensing piece, a Hall sensing element; the locking assembly is used for fixing a bolt or a nut, and the nut is installed on the flange plane of the flange; the transmission assembly is provided with a first transmission part and a second transmission part, the first transmission part extends towards the direction of a rotating center shaft of the bolt, the second transmission part extends along the direction of the rotating center shaft of the bolt, and a magnetic induction part corresponding to the Hall sensing part is arranged on the second transmission part; the first transmission part is in transmission connection with the second transmission part, the transmission assembly is arranged around the circumferential side direction of the locking assembly, the transmission assembly rotates relative to the nut angle along with the bolt, and the magnetic induction part is made to generate deflection displacement around the rotation center axis of the second transmission part and / or generate sudden change displacement in the rotation center axis direction of the second transmission part. The Hall sensing part can sense a magnetic field change signal of the magnetic induction part and transmit the signal to the detection sensing part so as to monitor the state of the bolt. Meanwhile, the utility model further discloses a monitoring system applying the Hall transmission detection device for the bolt state, and the problems that the efficiency is low, the consumed time is long, the cost is high due to the fact that the bolt state is manually detected in the prior art, and false detection and missing detection are caused by visual fatigue easily generated after a large number of bolts are detected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt state detection, in particular to a Hall drive detection device and a monitoring system for bolt state. Background Art

[0002] With the increasingly serious world energy crisis, the public's call for improving the ecological environment is rising. As a clean and renewable energy, wind power is the renewable energy with the cost closest to traditional energy except for hydropower. Wind power has an overwhelming advantage in the installed capacity of global renewable energy power generation and plays an important role in improving the environment, reducing pollutant emissions, and optimizing the power structure. The wind power industry is gradually developing into an emerging industry with initial scale.

[0003] However, bolt fracture accidents of wind turbines occur frequently, especially the fracture of blade bolts. After the blade bolts are fractured, since there is no detection point on the bolts, there are great risks in the operation of the wind turbine. One is that the fractured bolts are scattered in the hub, which is easy to damage equipment such as sensors, pitch cabinets, and hub surfaces, causing secondary damage to other equipment. The other is that after the bolts are fractured, the connection between the blade and the hub is in an uneven stress state, and there is a risk of blade dropping during long-term operation.

[0004] At present, there is still no device in the existing industry for real-time and timely detection of the above-mentioned bolt loosening or fracture. It is still necessary to use manual labor to detect a large number of bolts, which is inefficient, time-consuming, costly, and prone to problems such as misdetection and missed detection due to visual fatigue after detecting a large number of bolts. Summary of the Utility Model

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a Hall drive detection device and a monitoring system for bolt state, and solves the technical problem of real-time monitoring of the state of existing bolts.

[0006] The technical solution adopted by the utility model to solve its problems is as follows:

[0007] A Hall drive detection device for bolt state, comprising:

[0008] A detection sensing member;

[0009] A Hall sensing member;

[0010] A locking assembly, the locking assembly is used to fix a bolt or a nut, and the nut is installed on the flange plane of a flange;

[0011] A transmission assembly, the transmission assembly having a first transmission member and a second transmission member, the first transmission member extending in a direction towards the rotation central axis of the bolt, the second transmission member extending along the rotation central axis of the bolt, a magnetic induction member corresponding to the Hall sensing member being provided on the second transmission member, and the first transmission member being in transmission connection with the second transmission member, the transmission assembly being arranged around the circumferential direction of the locking assembly, the transmission assembly rotating relative to the nut with the bolt at an angle, and causing the magnetic induction member to rotate around the rotation central axis of the second transmission member to generate a deflection displacement and / or a sudden displacement along the rotation central axis direction of the second transmission member, the Hall sensing member being capable of sensing the magnetic field change signal of the magnetic induction member and transmitting it to the detection sensing member to monitor the bolt state.

[0012] In some embodiments of the present invention, the first central axis of the first transmission member is perpendicular to the rotation central axis of the bolt, or the first central axis of the first transmission member forms an angle of 60° to 120° with the rotation central axis of the bolt.

[0013] In some embodiments of the present invention, the second central axis of the second transmission member is parallel to the rotation central axis of the bolt.

[0014] In some embodiments of the present invention, the first transmission member is a worm member and the second transmission member is a worm wheel member; or the first transmission member is a driving gear member and the second transmission member is a driven gear member.

[0015] In some embodiments of the present invention, the Hall sensing member is provided on a side of the second transmission member close to the magnetic induction member, and the magnetic field of the magnetic induction member covers the Hall chip of the Hall sensing member.

[0016] In some embodiments of the present invention, the Hall sensing member further includes a wiring terminal, a capacitive element, and an integrated processing unit electrically connected to the Hall chip, the wiring terminal being electrically connected to the integrated processing unit through the capacitive element, and the wiring terminal being used to connect a power supply line or an external antenna.

[0017] In some embodiments of the present invention, the detection sensing member is a passive wireless sensor.

[0018] In some embodiments of the present invention, an elastic adjustment member is further arranged between the Hall sensing member and the magnetic induction member. When the bolt breaks, the elastic adjustment member can drive a sudden displacement between the magnetic induction member and the Hall sensing member, and the detection sensing member determines that the bolt state is in a broken state according to the sudden displacement.

[0019] In some embodiments of the present utility model, the Hall drive detection device for the bolt state further includes a sensing outer housing, a quick-acting spring body assembled inside the sensing outer housing, and a trigger push rod member. When the bolt is in a broken state, the quick-acting spring body pushes a part of the trigger push rod member to extend out of the sensing outer housing.

[0020] In some embodiments of the present utility model, the Hall drive detection device for the bolt state further includes a scale compass member and a dynamic movable seat. The movable end of the dynamic movable seat slides between the scale compass member and the locking assembly, and the transmission assembly is in transmission connection with the scale compass member. The detection sensing member is fixedly connected to the dynamic movable seat. The scale compass member is provided on any one of the bolt, the nut, and the flange, and the dynamic movable seat is provided on one of the remaining two of the bolt, the nut, and the flange.

[0021] In some embodiments of the present utility model, the transmission assembly further includes a transmission driving member. The circumferential side of the transmission driving member is evenly provided with active scale teeth. The scale compass member is evenly provided with a number of driven scale openings or driven scale teeth that can engage with the active scale teeth along the circumferential direction. The transmission driving member is fixedly connected to the first transmission member.

[0022] In some embodiments of the present utility model, the scale compass member is made of metal, or plastic, or silica gel, or rubber material.

[0023] In some embodiments of the present utility model, the locking assembly includes a locking hoop portion and a fastening connection portion fixedly connected to the locking hoop portion. The locking hoop portion and the fastening connection portion cooperate to clamp the bolt or the nut.

[0024] The present utility model also discloses a monitoring system, including the above-mentioned Hall drive detection device for the bolt state.

[0025] In summary, the Hall drive detection device for the bolt state and the monitoring system provided by the present utility model have the following technical effects:

[0026] By cleverly utilizing the cooperation between the Hall sensing member and the magnetic induction member configured on the transmission assembly, the effect of Hall monitoring of the bolt is achieved. Furthermore, by cooperating with the detection sensing member, the purpose of monitoring the bolt state is achieved, thereby solving the problems of low efficiency, long time consumption, high cost caused by manual detection of the existing bolt state, and easy occurrence of misdetection and missed detection due to visual fatigue after detecting a large number of bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1Overall structure diagram of a Hall drive detection device for the bolt state of the present utility model;

[0028] Figure 2 First partial assembly drawing of a Hall drive detection device for the bolt state of the present utility model;

[0029] Figure 3 For Figure 2 Local enlarged schematic diagram at position A in

[0030] Figure 4 Second partial assembly drawing of a Hall drive detection device for the bolt state of the present utility model;

[0031] Figure 5 For Figure 4 Local enlarged schematic diagram at position B in

[0032] Figure 6 Third partial assembly drawing of a Hall drive detection device for the bolt state of the present utility model;

[0033] Figure 7 For Figure 6 Local enlarged schematic diagram at position C in

[0034] Figure 8 Structural schematic diagram of the drive assembly in the present utility model;

[0035] Figure 9 Assembly structural schematic diagram of the Hall sensing element and the external antenna in the present utility model.

[0036] Icon: 1 - Detection sensing element, 21 - Hall sensing element, 211 - Hall chip, 212 - Wiring terminal, 213 - Capacitor element, 214 - Integrated processing unit, 22 - Magnetic induction element, 23 - Elastic adjustment element, 3 - Locking assembly, 31 - Locking hoop part, 32 - Fastening connection part, 4 - Drive assembly, 41 - First drive part, 42 - Second drive part, 43 - Induction groove, 44 - Drive active part, 45 - Active scale teeth, 51 - Bolt, 52 - Nut, 6 - External antenna, 7 - Sensing outer housing, 71 - Sensing positioning groove, 72 - Positioning protrusion, 81 - Trigger top rod part, 82 - Quick-acting spring body, 9 - Scale compass part, 91 - Driven scale notch, 10 - Dynamic moving seat, 101 - Moving end. Detailed implementation manners

[0037] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0040] Specifically, in combination with Figures 1 to 9 As shown, the present utility model discloses a Hall drive detection device for bolt state, which includes a detection sensor 1, a Hall sensor 21, a transmission assembly 4 and a locking assembly 3. Among them, the locking assembly 3 includes a locking hoop part 31 and a fastening connection part 32 fixedly connected to the locking hoop part 31. When in use, only need to sleeved the locking assembly 3 on the bolt 51 or the nut 52, and through the cooperation of the locking hoop part 31 and the fastening connection part 32, to clamp the bolt 51 or the nut 52. The nut 52 is installed on the flange plane of the flange, so as to achieve the purpose of fixing to the bolt 51 or the nut 52. Then there is no need to disassemble and assemble the bolt 51 and the nut 52, which will not only not damage the original structure of the bolt 51 and the nut 52, but also achieve the effect of non-destructive installation, and is also convenient for disassembly and assembly, effectively improving the assembly efficiency.

[0041] Furthermore, the transmission assembly 4 has a first transmission member 41 and a second transmission member 42. The first transmission member 41 extends in the direction of the rotation center axis of the bolt 51, and the second transmission member 42 extends along the rotation center axis of the bolt 51. A magnetic induction member 22 corresponding to the Hall sensor 21 is provided on the second transmission member 42, and the first transmission member 41 is drivingly connected to the second transmission member 42. The transmission assembly 4 moves around the circumferential direction of the locking assembly 3, and causes the magnetic induction member 22 to generate a deflection displacement around the rotation center axis of the second transmission member 42 and / or a sudden displacement along the rotation center axis direction of the second transmission member 42. The Hall sensor 21 can sense the magnetic field change signal of the magnetic induction member 22 and transmit it to the detection sensor 1 to monitor the bolt state.

[0042] In this embodiment, the Hall effect principle is utilized to monitor the state of the bolt. The state of the bolt here can be selected as the loosening of bolt 51, or alternatively, the fracture of bolt 51. Specifically, after the assembly of the detection sensor 1, Hall sensor 21, transmission assembly 4, and locking assembly 3 with the nut 52 of bolt 51 is completed, it is placed on the flange plane of the flange in the monitoring system. Assuming the state of the bolt is the loosening of bolt 51, that is, a relative deflection will occur between bolt 51 and nut 52, and relative deflections will also occur between bolt 51 and the flange plane of the flange, and between nut 52 and the flange plane of the flange. Then, the transmission assembly 4 will be arranged around the circumferential direction of the locking assembly 3. The transmission assembly 4 rotates with bolt 51 relative to nut 52 in terms of angle, and synchronously drives the first transmission member 41 to rotate around its rotation center axis. At this time, driven by the first transmission member 41, the second transmission member 42 will also rotate around its own rotation center axis.

[0043] Since the magnetic induction member 22 is installed on the second transmission member 42, the magnetic induction member 22 will also rotate synchronously with the second transmission member 42 around the rotation center axis of the second transmission member 42, causing the surrounding magnetic field of the Hall sensor 21 to change. Then, the Hall sensor 21 can timely capture the information of the magnetic field change and transmit it to the detection sensor 1. The detection sensor 1 analyzes and judges whether the state of the bolt is the loosening of bolt 51 according to the change amount of the magnetic field. Preferably, the Hall sensor 21 can transmit the magnetic field change signal to the signal receiving end (such as a computer, mobile phone, etc.) by wired or wireless means.

[0044] Assuming the state of the bolt is the fracture of bolt 51, that is, bolt 51 fractures. While a relative deflection occurs between bolt 51 and nut 52, the distance between either bolt 51 or nut 52 and the flange plane of the flange will produce a sudden change or variation. Then, the transmission assembly 4 will also simultaneously undergo a deflection displacement and a sudden change displacement, resulting in a sudden change or variation in the distance between the magnetic induction member 22 and the Hall sensor 21, forming a sudden change displacement, which causes the surrounding magnetic field of the Hall sensor 21 to change. Then, the Hall sensor 21 can timely capture the information of the magnetic field change and transmit it to the detection sensor 1. The detection sensor 1 analyzes and judges whether the state of the bolt is the fracture of bolt 51 according to the change amount of the magnetic field. Similarly, the Hall sensor 21 preferably transmits the magnetic field change signal to the signal receiving end (such as a computer, mobile phone, etc.) by wired or wireless means.

[0045] It should be noted that the detection sensor 1 is preferably a passive wireless sensor. Here, "passive" means that no energy storage battery is built-in, and "wireless" means that the power supply is not provided through wires. The detection sensor 1 is preferably powered by PF ID, or alternatively, by coil induction power supply combined with capacitor energy storage, so that the position of the Hall transmission detection device for the bolt state is not restricted during the detection process, and there is no interference from wires during the assembly or detection process, reducing the detection difficulty and facilitating assembly and detection.

[0046] As a preferred embodiment of the present embodiment, specifically in combination with Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 shown, the first central axis of the first transmission member 41 is perpendicular to the rotation central axis of the bolt 51, so as to ensure and improve the monitoring accuracy of the detection and sensing member 1 while reducing the debugging difficulty of the detection and sensing member 1. In addition, it is also convenient for the assembly of the transmission assembly 4.

[0047] However, it is not limited to the first central axis of the first transmission member 41 being perpendicular to the rotation central axis of the bolt 51. It can also be that the first central axis of the first transmission member 41 forms an angle of 60° to 120° with the rotation central axis of the bolt 51, which can also ensure the monitoring accuracy of the detection and sensing member 1. As another preferred embodiment of the present embodiment, specifically in combination with Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 shown, the second central axis of the second transmission member 42 is parallel to the rotation central axis of the bolt 51, which can also ensure and improve the monitoring accuracy of the detection and sensing member 1 while reducing the debugging difficulty of the detection and sensing member 1. In addition, it is also convenient for the assembly of the transmission assembly 4.

[0048] It should be added that the first transmission member 41 is a worm member, and the second transmission member 42 is a worm wheel member. The use of the worm and worm wheel transmission method enables stable transmission of motion and rotational torque between the staggered first transmission member 41 and the second transmission member 42; alternatively, the first transmission member 41 is a driving gear member, and the second transmission member 42 is a driven gear member. Both the driving gear member and the driven gear member here are helical gears, and the staggered first transmission member 41 and the second transmission member 42 are meshed, which can also achieve the purpose of stable transmission of motion and rotational torque.

[0049] To ensure that the above magnetic induction member 22 can be stably installed on the second transmission member 42, the inventor provides a preferred method, specifically in combination with Figure 6 and Figure 7 shown, an induction groove 43 is formed by extending the end of the second transmission member 42 along the direction of its rotation central axis. The shape and size of the cross-section of the induction groove 43 along the radial direction of the second transmission member 42 are adapted to the shape and size of the magnetic induction member 22. The magnetic induction member 22 is embedded and fixed in the induction groove 43, which not only ensures the stability of the installation between the magnetic induction member 22 and the second transmission member 42, but also ensures the accuracy of the induction detection between the magnetic induction member 22 and the Hall sensing member 21, reducing the detection error.

[0050] A further preferred solution lies in, specifically according toFigure 7 As shown, the Hall sensor 21 is disposed on a side of the second transmission member 42 close to the magnetic sensing member 22 , and the magnetic field of the magnetic sensing member 22 covers the Hall chip 211 of the Hall sensor 21 to ensure the stability of the sensing detection.

[0051] The bolted Hall transmission detection device further includes a sensing outer shell 7, on which a sensing positioning groove 71 is provided, and a positioning protrusion 72 is provided on the groove bottom side wall of the sensing positioning groove 71 close to the Hall sensor 21, and the shape and size of the positioning protrusion 72 are adapted to the shape and size of the notch of the sensing groove 43, and the groove depth of the sensing groove 43 is greater than the height of the magnetic sensing member 22. During installation, the second transmission member 42 is plugged into the sensing positioning groove 71 until the positioning protrusion 72 is plugged into the notch of the sensing groove 43 of the second transmission member 42, and abuts against the magnetic sensing member 22.

[0052] In this way, not only the assembly efficiency and positioning accuracy are improved, but also, under the action of the positioning protrusion 72, the second transmission member 42 and the magnetic sensing member 22 are more stable during the deflection process, the accuracy of the sensing detection is further improved, and the magnetic sensing member 22 can be prevented from being separated from the sensing groove 43.

[0053] In other embodiments, the depth of the sensing groove 43 is smaller than the height of the magnetic sensing element 22, so that the magnetic sensing element 22 partially extends and is exposed outside the sensing groove 43. The bottom sidewall of the sensing positioning groove 71 close to the Hall sensor 21 is provided with a positioning recessed platform, and the shape and size of the inner cavity of the positioning recessed platform is adapted to the shape and size of the end of the second transmission element 42, so that the rapid positioning during the installation process and the restraint effect during the deflection process can be achieved, and the magnetic sensing element 22 can be prevented from being separated from the sensing groove 43.

[0054] For further details, please refer to Figures 4 to 7 As shown, an elastic adjustment member 23 is also arranged between the Hall sensor 21 and the magnetic sensor 22. The elastic adjustment member 23 is preferably a spring, but is not limited to a spring, and may also include a non-standard member made of elastic material, such as a rubber ring or a silicone sleeve. When the bolt 51 breaks, the elastic adjustment member 23 can drive a sudden displacement between the magnetic sensor 22 and the Hall sensor 21, and the detection sensor 1 determines that the bolt is in a broken state according to the sudden displacement.

[0055] Specifically, please combine Figure 5 and Figure 7As shown in the figure, the elastic adjusting member 23 is installed in the sensing positioning groove 71 of the sensing housing 7 and sleeved on the outside of the positioning protrusion 72 or the positioning concave table body, achieving rapid and accurate positioning of the elastic adjusting member 23 during the installation process. Among them, one end of the elastic adjusting member 23 abuts / clamps against the end of the second transmission member 42, and the other end of the elastic adjusting member 23 abuts against the bottom of the sensing positioning groove 71. After the assembly is completed, the elastic adjusting member 23 is in a compressed deformation state.

[0056] When the state of the bolt is that the bolt 51 is broken, that is, the bolt 51 breaks, the distance between any one of the bolt 51 and the nut 52 and the flange plane of the flange will produce a sudden change or variation, prompting the transmission assembly 4 of the transmission assembly 4 to move axially. At this time, under the action of the deformation recovery of the elastic adjusting member 23, the self-locking effect between the second transmission member 42 of the transmission assembly 4 and the second transmission member 42 is released, and the second transmission member 42 quickly moves toward the outside of the sensing positioning groove 71. Then, the distance between the magnetic induction member 22 and the Hall sensing member 21 on the second transmission member 42 undergoes an obvious sudden change, that is, the magnetic field around the Hall sensing member 21 suddenly changes / weakens significantly. The Hall sensing member 21 will also be able to timely capture the information of the magnetic field change and transmit it to the detection sensing member 1, and the detection sensing member 1 analyzes and judges whether the state of the bolt is that the bolt 51 is broken according to the amount of change in the magnetic field.

[0057] As a preferred solution of this embodiment, specifically, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 9 As shown, the above-mentioned Hall sensing member 21 further includes a wiring terminal 212, a capacitor element 213, and an integrated processing unit 214 electrically connected to the Hall chip 211. Here, the integrated processing unit 214 is preferably an F ID microchip, which has functions such as identifying identification signals, supplying power, and transmitting data. The wiring terminal 212 is electrically connected to the integrated processing unit 214 through the capacitor element 213, and the wiring terminal 212 is used to connect the power supply line or the external antenna 6.

[0058] In this way, through the cooperation of the capacitor element 213 and the external antenna 6, the high-frequency magnetic field in the monitoring system or the wind power generation environment can be converted into a power source suitable for the Hall sensing member 21 for storage and use, and the external antenna 6 itself also helps to wirelessly transmit the magnetic field change signal to be transmitted by the integrated processing unit 214 to the corresponding signal receiving end. Of course, the power supply line can also be plugged into the wiring terminal 212, so that the magnetic field change signal to be transmitted by the integrated processing unit 214 is transmitted to the signal receiving end through the power supply line.

[0059] As a preferred manner of this embodiment, specifically, please refer to Figure 1 , Figure 2 and Figure 4As shown, the Hall drive detection device for the bolt state further includes a quick-acting spring body 82 and a trigger push rod 81 assembled inside the above-mentioned sensing housing 7. When the bolt is in a broken state, the quick-acting spring body 82 pushes part of the trigger push rod 81 to extend outside the sensing housing 7.

[0060] Specifically, as Figure 4 shown, a spring installation groove is provided on the trigger push rod 81. One end of the quick-acting spring body 82 abuts against the groove wall of the spring installation groove, and the other end of the quick-acting spring body 82 abuts against the inner side wall of the sensing housing 7. When the assembly is completed, the quick-acting spring body 82 is in a compressed deformation state. When the bolt is in a broken state, while the Hall sensor 21 monitors the bolt state, the quick-acting spring body 82 also drives part of the trigger push rod 81 to extend outside the sensing housing 7 at the same time, which can facilitate the detection personnel to more clearly and quickly detect and screen out the broken bolts 51.

[0061] It should be noted that the cooperation of the above-mentioned quick-acting spring body 82 and the trigger push rod 81 can be used to change the state value of the detection sensor 1, so that the detection sensor 1 determines that the bolt state is that the bolt 51 is broken.

[0062] Of course, other quick-acting mechanisms in the art that can make the ejector rod / ejector pin extend outside the sensing housing 7 and change the state value of the detection sensor 1 when the bolt state is that the bolt 51 is broken can be used as the conventional replacement methods for the above-mentioned quick-acting spring body 82 and the trigger push rod 81.

[0063] To realize the movement of the transmission component 4 around the circumferential direction of the locking component 3 and make the magnetic induction component 22 rotate around the rotation center axis of the second transmission component 42, the inventor provides a preferred method. Specifically, please refer to Figure 2 、 Figure 3 and Figure 8 shown, the Hall drive detection device for the bolt state further includes a scale compass 9 and a dynamic movable seat 10. The movable end 101 of the dynamic movable seat 10 slides between the scale compass 9 and the locking component 3, and the transmission component 4 is in transmission connection with the scale compass 9, that is, the dynamic movable seat 10 is clamped between the scale compass 9 and the locking component 3 to prevent the dynamic movable seat 10 from detaching from the locking component 3, and the dynamic movable seat 10 can slide relative to the locking component 3. The detection sensor 1 is fixedly connected to the dynamic movable seat 10. The fixed connection here includes but is not limited to bolt 511 connection, clamping connection, plug-in connection, adhesive connection, and any combination of the above connection methods.

[0064] Understandably, one of the bolt 51 and the nut 52 is provided with a scale compass member 9, and the other of the bolt 51 and the nut 52 is provided with a dynamic movable seat 10. Alternatively, one of the bolt 51 and the flange is provided with a scale compass member 9, and the other of the bolt 51 and the flange is provided with a dynamic movable seat 10. Alternatively, one of the nut 52 and the flange is provided with a scale compass member 9, and the other of the nut 52 and the flange is provided with a dynamic movable seat 10.

[0065] Specifically, in combination with Figure 2 , Figure 3 and Figure 8 As shown, the transmission assembly 4 further includes a transmission driving member 44. Here, the transmission driving member 44 is in the shape of a disk. The circumferential side surface of the transmission driving member 44 is uniformly provided with driving scale teeth 45. The scale compass member 9 is uniformly provided with a plurality of driven scale openings 91 along the circumferential direction that can engage with the driving scale teeth 45. Through the cooperation between the driving scale teeth 45 and the driven scale openings 91, the stability and accuracy of the transmission between the transmission assembly 4 and the scale compass member 9 can be effectively ensured. The transmission driving member 44 is fixedly connected to the first transmission member 41, and the transmission driving member 44 transmits motion and rotational torque to the first transmission member 41.

[0066] In some embodiments, it is also optional that the circumferential side surface of the transmission driving member 44 is uniformly provided with driving scale teeth 45, and the scale compass member 9 is uniformly provided with driven scale teeth that engage with the driving scale teeth 45 along the circumferential direction, which can also effectively ensure the stability and accuracy of the transmission between the transmission assembly 4 and the scale compass member 9.

[0067] In some embodiments, one of the circumferential side surface of the transmission driving member 44 and the scale compass member 9 near the circumferential edge is provided with a scale protrusion, and the other of the circumferential side surface of the transmission driving member 44 and the scale compass member 9 near the circumferential edge is provided with a soft rubber layer. Then, through the cooperation between the scale protrusion and the software layer, the stability and accuracy of the transmission between the transmission assembly 4 and the scale compass member 9 can also be ensured.

[0068] In some embodiments, friction layers are disposed on both the circumferential side surface of the transmission driving member 44 and the scale compass member 9 near the circumferential edge. Here, the friction layer can be selected as a matte layer or a knurled layer. With such a setting, the transmission between the transmission driving member 44 and the scale compass member 9 is carried out by using friction force, which can also ensure the stability and accuracy of the transmission between the transmission driving member 44 and the scale compass member 9.

[0069] It should be supplemented and explained that the scale compass member 9 can be made of plastic, or silica gel, or rubber material, so that the driving scale teeth 45 of the driving active member 44 can stably engage with the driven scale ports 91 of the scale compass member 9 or stably mesh with the driven scale teeth of the scale compass member 9, or it can also increase the friction between the circumferential side surface of the driving active member 44 and the scale compass member 9. Of course, it is not limited to being made of plastic, silica gel or rubber material, and can also be replaced by magnetic material. In other embodiments, according to the experience of those skilled in the art, the scale compass member 9 can also be made of metal material as a conventional replacement method for the scale compass member 9 made of plastic, silica gel or rubber material.

[0070] Based on the structure and connection relationship of the above bolt 51 and nut 52 loosening and breaking monitoring device, the inventor also discloses a monitoring system, including the above bolt 51 and nut 52 loosening and breaking monitoring device.

[0071] To sum up, the monitoring method of the bolt 51 and nut 52 loosening and breaking monitoring device and the monitoring system is as follows:

[0072] Before monitoring the bolt 51 and the nut 52, first sleeved the locking hoop part 31 of the locking component 3 on the bolt 51 and tightened it with the fastening connection part 32. Then slide the movable end 101 of the dynamic movable seat 10 between the scale compass member 9 and the locking component 3, and the detection and sensing member 1 is installed on the side of the bolt 51 through the dynamic movable seat 10. Finally, correct the initial setting value of the detection and sensing member 1.

[0073] During the process of monitoring the bolt 51 and the nut 52 or during the use of the fan, assuming that the bolt 51 and the nut 52 are loosened, then a radial angular rotation occurs between the bolt 51 and the nut 52, and a tangential relative rotation occurs between the transmission component 4 and the bolt 51, driving the magnetic induction member 22 on the second transmission member 42 to deflect around the rotation center axis of the second transmission member 42. In this way, the Hall sensing member 21 senses the magnetic field change signal of the magnetic induction member 22 and transmits it to the detection and sensing member 1, and the detection and sensing member 1 identifies and determines that the bolt state is that the bolt 51 is loose.

[0074] Assuming that the bolt 51 breaks, the distance between either the bolt 51 or the nut 52 and the flange plane of the flange will undergo a sudden change or variation. Under the action of the deformation recovery of the elastic adjustment member 23, the second transmission member 42 of the transmission component 4 is unlocked from the second transmission member 42, and the second transmission member 42 and the magnetic induction member 22 on the second transmission member 42 are driven away from the Hall sensing member 21. The Hall sensing member 21 will also be able to timely capture the information of the magnetic field change and transmit it to the detection and sensing member 1. While the detection and sensing member 1 identifies and determines that the bolt state is that the bolt 51 breaks, the quick-acting spring body 82 also simultaneously drives part of the trigger top rod member 81 to extend out of the sensing outer casing 7.

[0075] It should also be supplemented and explained here that this monitoring method is only for reference to facilitate the understanding of the structure and connection relationship of the present utility model, and is not limited to this monitoring method. The assemblers can make adjustments according to their assembly habits and / or experience.

[0076] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present utility model.

Claims

1. A Hall transmission detection device for bolt status, characterized in that: include: Detection sensor (1); Hall sensor (21); A locking assembly (3), the locking assembly (3) being used to fix a bolt (51) or a nut (52), and the nut (52) being mounted on a flange plane of the flange; A transmission assembly (4), the transmission assembly (4) comprising a first transmission member (41) and a second transmission member (42), the first transmission member (41) extending in the direction of the rotation center axis of the bolt (51), the second transmission member (42) extending along the direction of the rotation center axis of the bolt (51), the second transmission member (42) being provided with a magnetic sensing member (22) corresponding to the Hall sensor (21), and the first transmission member (41) being transmission-connected to the second transmission member (42), the sensor The moving component (4) is arranged around the circumferential direction of the locking component (3); the transmission component (4) rotates with the bolt (51) relative to the nut (52), and causes the magnetic sensing component (22) to generate a deflection displacement around the rotation center axis of the second transmission component (42) and / or a sudden displacement along the rotation center axis direction of the second transmission component (42); the Hall sensor (21) can sense the magnetic field change signal of the magnetic sensing component (22) and transmit it to the detection sensor (1) to monitor the bolt status.

2. The Hall transmission detection device for bolt status according to claim 1, characterized in that: The first central axis of the first transmission member (41) is perpendicular to the rotational center axis of the bolt (51), or the first central axis of the first transmission member (41) forms an angle of 60° to 120° with the rotational center axis of the bolt (51).

3. The Hall transmission detection device for bolt status according to claim 1, characterized in that: The second central axis of the second transmission member (42) is parallel to the rotational central axis of the bolt (51).

4. The Hall transmission detection device for bolt status according to claim 1, characterized in that: The first transmission member (41) is a worm member, and the second transmission member (42) is a worm wheel member; or, the first transmission member (41) is a driving gear member, and the second transmission member (42) is a driven gear member.

5. The Hall transmission detection device for bolt status according to any one of claims 1 to 4, characterized in that: An induction groove (43) is formed at the end of the second transmission member (42) extending along the direction of its rotation center axis, and the magnetic induction member (22) is embedded in and fixed to the induction groove (43).

6. The Hall transmission detection device for bolt status according to any one of claims 1 to 4, characterized in that: The Hall sensor (21) is arranged on a side of the second transmission component (42) close to the magnetic sensing component (22), and the magnetic field of the magnetic sensing component (22) covers the Hall chip (211) of the Hall sensor (21).

7. The Hall transmission detection device for bolt status according to claim 6, characterized in that: The Hall sensor (21) further comprises a connection terminal (212), a capacitor element (213) and an integrated processing unit (214) electrically connected to the Hall chip (211); the connection terminal (212) is electrically connected to the integrated processing unit (214) via the capacitor element (213); and the connection terminal (212) is used to connect a power supply line or an external antenna (6).

8. The Hall transmission detection device for bolt status according to any one of claims 1 to 4, characterized in that: The detection sensor (1) is a passive wireless sensor.

9. The Hall transmission detection device for bolt status according to any one of claims 1 to 4, characterized in that: An elastic adjustment member (23) is also arranged between the Hall sensor (21) and the magnetic sensor (22). When the bolt (51) breaks, the elastic adjustment member (23) can drive a sudden displacement between the magnetic sensor (22) and the Hall sensor (21). The detection sensor (1) determines that the bolt is in a broken state based on the sudden displacement.

10. The Hall transmission detection device for bolt status according to claim 9, characterized in that: The invention also comprises a sensing outer shell (7), and a quick-acting spring body (82) and a triggering top rod (81) assembled inside the sensing outer shell (7); the quick-acting spring body (82) pushes part of the triggering top rod (81) to extend out of the sensing outer shell (7) when the bolt is in a broken state.

11. The Hall transmission detection device for bolt status according to any one of claims 1 to 4, characterized in that: The invention also comprises a graduated compass component (9) and a dynamic movable seat (10), wherein the movable end (101) of the dynamic movable seat (10) is slidably arranged between the graduated compass component (9) and the locking assembly (3), and the transmission assembly (4) is transmission-connected to the graduated compass component (9), the detection sensor component (1) is fixedly connected to the dynamic movable seat (10), any one of the bolt (51), the nut (52) and the flange is provided with the graduated compass component (9), and the dynamic movable seat (10) is provided with one of the remaining two of the bolt (51), the nut (52) and the flange.

12. The Hall transmission detection device for bolt status according to claim 11, characterized in that: The transmission assembly (4) further comprises a transmission active member (44), the peripheral side surface of the transmission active member (44) is evenly provided with active scale teeth (45), the scale compass member (9) is evenly provided with a plurality of driven scale openings (91) capable of engaging with the active scale teeth (45) or driven scale teeth engaging with the active scale teeth (45) along the peripheral direction, and the transmission active member (44) is fixedly connected to the first transmission member (41).

13. The Hall transmission detection device for bolt status according to claim 11, characterized in that: The graduated compass component (9) is made of metal, plastic, silica gel, or rubber material.

14. The Hall transmission detection device for bolt status according to any one of claims 1 to 4, characterized in that: The locking assembly (3) comprises a locking hoop portion (31) and a fastening connection portion (32) fixed to the locking hoop portion (31); the locking hoop portion (31) and the fastening connection portion (32) cooperate to clamp the bolt (51) or the nut (52).

15. A monitoring system, characterized in that: A Hall transmission detection device for detecting the bolt status including any one of items 1 to 14.

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