Wireless bolt force transmitter

Abstract

The utility model discloses a wireless bolt force transmitter comprising a sensor structure which comprises a housing assembly, a threaded pedestal, a rod body assembly, a magnet seat and a circuit board, the threaded pedestal is installed on the housing assembly and used for being in threaded connection with the head of a bolt, and the rod body assembly is installed on the magnet seat. The head portion of the bolt is coaxially provided with a hole groove extending into a screw rod of the bolt, one end of the rod body assembly is arranged in the hole groove in a penetrating mode and is in threaded connection with the side wall of the groove bottom of the hole groove, and the other end of the rod body assembly penetrates through the threaded base in a sliding mode and extends into the shell assembly. And the magnet seat is arranged in the shell assembly. The device is high in measurement precision, convenient to install, high in stability and low in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering safety monitoring, in particular to a wireless bolt force transmitter. Background Art

[0002] In a complex and changeable engineering environment, the pre-tightening force state of bolt connections is directly related to the overall stability and safety of the structure.

[0003] However, traditional bolt pre-tightening force monitoring methods are often limited by the lag and inaccuracy of monitoring means, and it is difficult to timely and accurately reflect the stress changes of bolts during actual operation, especially the attenuation or loosening of the pre-tightening force. Summary of the Invention

[0004] In view of the above problems existing in the existing bolt pre-tightening force monitoring, the present invention aims to provide a wireless bolt force transmitter with real-time monitoring, high accuracy and high applicability.

[0005] The specific technical solutions are as follows:

[0006] A wireless bolt force transmitter, comprising: a sensor structure, which includes:

[0007] A housing assembly;

[0008] A threaded base, which is installed on the housing assembly and used for threaded connection with the head of the bolt, and a hole groove extending into the screw of the bolt is coaxially provided on the head of the bolt;

[0009] A rod body assembly, one end of which passes through the hole groove and is threadedly connected to the side wall of the bottom of the hole groove, and the other end of the rod body assembly slides through the threaded base and extends into the housing assembly;

[0010] A magnet seat, which is arranged in the housing assembly and connected to the other end of the rod body assembly, and a magnet is provided on the magnet seat;

[0011] A circuit board, which is arranged in the housing assembly and located on the side of the magnet seat away from the rod body assembly, and an elastic member is provided between the circuit board and the magnet seat. A magnetic induction element is provided on the circuit board. When the screw of the bolt generates stress tensile changes, the magnetic induction element detects the change of the bolt pre-tightening force by sensing the magnetic field change caused by the relative position change between the magnet and the circuit board.

[0012] As a further improvement and optimization of this solution, the magnetic induction element is a magnetic sensor.

[0013] As a further improvement and optimization of this solution, the transmitter further includes a wireless module, and the circuit board is connected to a computer through the wireless module.

[0014] As a further improvement and optimization of this solution, the wireless module is electrically connected to the circuit board through a cable.

[0015] As a further improvement and optimization of this solution, the elastic member is two compression springs.

[0016] As a further improvement and optimization of this solution, a magnetic metal outer shell is sleeved outside the housing assembly.

[0017] As a further improvement and optimization of this solution, the rod assembly includes a guide rod and a core shaft. One end of the guide rod slides through the threaded base and is connected to the magnet seat. One end of the core shaft abuts against the other end of the guide rod, and the other end passes through the hole groove and is threadedly connected to the side wall of the bottom of the hole groove.

[0018] As a further improvement and optimization of this solution, the threaded base has a stud, the inner wall of the notch of the hole groove has an internal thread, and the stud is threadedly connected to the internal thread.

[0019] As a further improvement and optimization of this solution, the wireless module has an aviation plug. One end of the cable is electrically connected to the circuit board, and the other end is connected with an aviation plug head, and the aviation plug head is plugged and matched with the aviation plug.

[0020] The positive effects of the above technical solutions compared with the prior art are as follows:

[0021] (1) In the present utility model, the rod assembly is slidably placed in the screw of the bolt through the hole groove. When the screw of the bolt generates stress tensile change, this stress is applied to the magnet seat through the rod assembly, so that the magnet seat drives the magnet to axially displace along the rod assembly. The magnetic induction element detects the change of the bolt pre-tightening force by sensing the magnetic field change caused by the relative position change between the magnet and the circuit board, with high measurement accuracy and strong anti-interference ability.

[0022] (2) In the present utility model, the data monitored by the sensor structure is wirelessly transmitted to the computer through the wireless module, with a long transmission distance, and it can ensure the use of the product in various complex and narrow environments where power supply is not easy.

[0023] (3) In the present utility model, the wireless bolt force transmitter adopts a split design of the sensor structure and the wireless module, which not only reduces the volume and improves the aesthetics, but also enhances the installation ability in a narrow space, and greatly facilitates the installation, maintenance and repair processes.

[0024] (4) In the present utility model, a magnetic metal outer shell is sleeved outside the housing assembly, so that the magnet and the metal outer shell form a stable magnetic field, thereby isolating the change in the internal magnetic field of the transmitter caused by the approach of external magnetic materials, and thus improving the anti-interference and stability of the product.

[0025] (5) In the present utility model, the transmitter and the bolt are two separate modules. During production, only bolts of different specifications need to be configured according to the working conditions requirements to configure the transmitter. In this way, the transmitter can be mass-produced, improving the production efficiency of the product and reducing the production cost. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a wireless bolt force transmitter of the present utility model;

[0027] Figure 2 is an exploded schematic diagram of the sensor structure of a wireless bolt force transmitter of the present utility model;

[0028] Figure 3 is a sectional view of the sensor structure of a wireless bolt force transmitter of the present utility model;

[0029] Figure 4 is a sectional view of the sensor structure of a wireless bolt force transmitter of the present utility model;

[0030] Figure 5 is a schematic structural diagram of the wireless module of a wireless bolt force transmitter of the present utility model;

[0031] In the drawings: 1. Sensor structure; 2. Bolt; 3. Wireless module; 4. Aviation plug; 5. Aviation plug head; 6. Cable; 7. Metal outer shell; 8. Cover plate; 9. Sealing ring; 10. Pressing gland; 11. Rod body assembly; 12. Housing assembly; 13. Threaded base; 14. Magnet seat; 15. Compression spring; 16. Magnet; 17. Circuit board; 31. Circuit box; 32. Bluetooth circuit; 33. Bluetooth module; 34. Battery; 111. Guide rod; 112. Core shaft; 121. Outer shell; 122. Support seat; 123. Insulating sheet; 124. Pan head screw; 125. Compensation plate; 126. Hexagonal copper column; 127. Mounting screw; 131. Stud; 141. Positioning column. Detailed Embodiment

[0032] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or positional relationship indicated 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. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, when terms such as "installation", "connection", "coupling" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Figure 1 It is a schematic structural diagram of a wireless bolt force transmitter of the present utility model. Figure 2 It is an exploded schematic diagram of the sensor structure of a wireless bolt force transmitter of the present utility model. Figure 3 It is a sectional view of the sensor structure of a wireless bolt force transmitter of the present utility model. Figure 4 It is a sectional view of the sensor structure of a wireless bolt force transmitter of the present utility model. Figure 5 It is a schematic structural diagram of the wireless module of a wireless bolt force transmitter of the present utility model, as Figures 1-5As shown in the figure, a wireless bolt force transmitter of a preferred embodiment is shown, including: a sensor structure 1, which includes a housing assembly 12, a threaded base 13, a rod body assembly 11, a magnet seat 14, and a circuit board 17. The threaded base 13 is installed on the housing assembly 12 for threaded connection with the head of the bolt 2, and the head of the bolt 2 coaxially has a hole groove extending into the screw of the bolt 2. One end of the rod body assembly 11 passes through the hole groove and is threadedly connected to the side wall of the bottom of the hole groove. The other end of the rod body assembly 11 slides through the threaded base 13 and extends into the housing assembly 12. The magnet seat 14 is provided in the housing assembly 12 and is connected to the other end of the rod body assembly 11, and a magnet 16 is provided on the magnet seat 14. The circuit board 17 is provided in the housing assembly 12 and is located on the side of the magnet seat 14 away from the rod body assembly 11, and there is an elastic member between the circuit board 17 and the magnet seat 14. A magnetic induction element (not shown in the figure) is provided on the circuit board 17. When the screw of the bolt 2 generates a stress tensile change, the magnetic induction element detects the change in the pre-tightening force of the bolt 2 by inducing the magnetic field change generated by the relative position change between the magnet and the circuit board 17.

[0036] In this embodiment, the rod body assembly 11 is slidably placed in the screw of the bolt 2 through the hole groove. When the screw of the bolt 2 generates a stress tensile change, this stress acts on the magnet seat 14 through the rod body assembly 11, so that the magnet seat 14 drives the magnet 16 to displace axially along the rod body assembly 11. The magnetic induction element detects the change in the pre-tightening force of the bolt 2 by inducing the magnetic field change generated by the relative position change between the magnet and the circuit board 17, with high measurement accuracy and strong anti-interference ability.

[0037] Further, as a preferred embodiment, the magnetic induction element is a magnetic sensor.

[0038] Further, as a preferred embodiment, the transmitter further includes a wireless module 3. The circuit board 17 is connected to a computer through the wireless module 3. The data monitored by the sensor structure 1 is wirelessly transmitted to the computer through the wireless module 3, with a long transmission distance, which can ensure the product is used in various complex and cramped environments where power supply is difficult.

[0039] In this embodiment, the wireless bolt force transmitter has a split design of the sensor structure 1 and the wireless module 3, which not only reduces the volume and improves the aesthetics, but also enhances the installation ability in narrow spaces, and greatly facilitates the installation, maintenance, and repair processes.

[0040] Further, as a preferred embodiment, the wireless module 3 is electrically connected to the circuit board 17 through a cable 6.

[0041] Further, as a preferred embodiment, the elastic member is two compression springs 15.

[0042] Further, as a preferred embodiment, a magnetic metal shell 7 is sleeved outside the housing assembly 12, so that the magnet 16 and the metal shell 7 form a stable magnetic field, thereby isolating the change of the internal magnetic field of the transmitter caused by the approach of external magnetic materials, thereby improving the anti-interference and stability of the product.

[0043] Further, as a preferred embodiment, the rod assembly 11 includes a guide rod 111 and a core shaft 112. One end of the guide rod 111 slides through the threaded base 13 and is connected to the magnet seat 14. One end of the core shaft 112 abuts against the other end of the guide rod 111, and the other end slides through the hole groove and is threadedly connected to the bottom side wall of the hole groove.

[0044] Preferably, the guide rod 111 is threadedly connected to the magnet seat 14.

[0045] Further, as a preferred embodiment, the threaded base 13 has a stud 131, and the inner wall of the notch of the hole groove has an internal thread, and the stud 131 is threadedly connected to the internal thread.

[0046] Further, as a preferred embodiment, the wireless module 3 has an aviation plug 4. One end of the cable 6 is electrically connected to the circuit board 17, and the other end is connected with an aviation plug head 5, and the aviation plug head 5 is inserted and matched with the aviation plug 4.

[0047] Preferably, the housing assembly 12 adopts an IP68 protection level and uses a housing material that is corrosion-resistant, sun-proof and anti-aging, which can be suitable for various complex environments and extend the service life of the product.

[0048] In this embodiment, the transmitter and the bolt 2 are two separate modules. During production, only bolts 2 of different specifications need to be configured according to the working conditions to configure the transmitter, so that the transmitter can be mass-produced, improving the production efficiency of the product and reducing the production cost.

[0049] The present utility model further has the following embodiments on the above basis:

[0050] In a further embodiment of the present utility model, please continue to refer to Figures 1-4As shown, the housing assembly 12 includes a housing 121, a support base 122, two hexagonal copper posts 126, an insulating sheet 123, and a compensation plate 125. One end of the housing 121 is installed with a threaded base 13. The support base 122 is disposed above the threaded base 13. Both sides of the bottom of the support base 122 have positioning grooves. Both sides of the magnet base 14 have two positioning posts 141. One ends of the two compression springs 15 are respectively sleeved outside the two positioning posts 141, and the other ends are respectively positioned in the two positioning grooves. The two hexagonal copper posts 126 respectively pass through both sides of the top of the support base 122 and are threadedly installed on the threaded base 13. The insulating sheet 123 and the compensation plate 125 are sequentially placed on the top of the support base 122 and fixed to the support base 122 by pan head screws 124. The circuit board 17 is placed on the two hexagonal copper posts 126 and is threadedly installed on the two hexagonal copper posts 126 respectively through two mounting screws 127 passing through the circuit board 17 to tighten the circuit board 17 on the two hexagonal copper posts 126.

[0051] Further, as a preferred embodiment, the metal housing 7 has an open structure at both ends and is sleeved outside the housing 121. One open end of the metal housing 7 is laser welded to the head of the bolt 2, and a cover plate 8 is laser welded to the other open end.

[0052] Further, as a preferred embodiment, one end of the cable 6 passes through the cover plate 8 and is connected to the circuit board 17, and there are a sealing ring 9 and a cable gland 10 at the connection of the cable 6 and the cover plate 8.

[0053] Further, as a preferred embodiment, as Figure 5 shown, the wireless module 3 includes a circuit box 31. A Bluetooth circuit 32 and a battery 34 electrically connected to the Bluetooth circuit 32 are installed in the circuit box 31. A Bluetooth module 33 is provided on the Bluetooth circuit 32. The aviation plug 4 is disposed outside the circuit box 31 and is electrically connected to the Bluetooth circuit 32 through a silicone wire.

[0054] The above are only preferred embodiments of the present invention, and thus do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A wireless bolt force transmitter, characterized in that, Comprising: A sensor structure, comprising: A housing assembly; A threaded base, which is mounted on the housing assembly and used for threaded connection with the head of a bolt, and the head of the bolt coaxially has a hole groove extending into the screw rod of the bolt; A rod assembly, one end of the rod assembly passes through the hole groove and is threadedly connected to the side wall of the bottom of the hole groove, and the other end of the rod assembly slides through the threaded base and extends into the housing assembly; A magnet seat, which is arranged in the housing assembly and connected to the other end of the rod assembly, and the magnet seat has a magnet; A circuit board, which is arranged in the housing assembly and located on the side of the magnet seat away from the rod assembly, and there is an elastic member between the circuit board and the magnet seat. The circuit board has a magnetic induction element. When the screw rod of the bolt generates a stress tensile change, the magnetic induction element detects the change in the pre-tightening force of the bolt by sensing the magnetic field change caused by the relative position change between the magnet and the circuit board.

2. The wireless bolt force transmitter according to claim 1, characterized in that, The magnetic induction element is a magnetic sensor.

3. The wireless bolt force transmitter according to claim 1, wherein, The transmitter further includes a wireless module, and the circuit board is connected to a computer through the wireless module.

4. The wireless bolt force transmitter according to claim 3, characterized in that, The wireless module is electrically connected to the circuit board through a cable.

5. The wireless bolt force transmitter according to claim 1, wherein The elastic member is two compression springs.

6. The wireless bolt force transmitter according to claim 1, wherein A magnetic metal shell is sleeved outside the housing assembly.

7. The wireless bolt force transmitter according to claim 1, characterized in that, The rod assembly includes a guide rod and a core shaft. One end of the guide rod slides through the threaded base and is connected to the magnet seat. One end of the core shaft abuts against the other end of the guide rod, and the other end passes through the hole groove and is threadedly connected to the side wall of the bottom of the hole groove.

8. The wireless bolt force transmitter according to claim 1, characterized in that, The threaded base has a stud, and the inner wall of the notch of the hole groove has an internal thread, and the stud is threadedly connected to the internal thread.

9. The wireless bolt force transmitter according to claim 4, characterized in that, The wireless module has an aviation plug. One end of the cable is electrically connected to the circuit board, and the other end is connected with an aviation plug head, and the aviation plug head is plugged and matched with the aviation plug.

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