TWM598351U - Bolt clamping force induction washer - Google Patents

Abstract

A bolt clamping force induction washer, which includes an induction washer, a connecting wire assembly and a signal processor. The induction gasket includes a body, a sensing element and a bushing. The outer diameter of the screw thread of the main body and the bolt has a shaft hole, the outer edge has a ring groove, and the two end surfaces perpendicular to the shaft hole have a loosening prevention structure. The sensing element is attached to the ring groove to measure the deformation sensing value in the axial direction of the body. The bushing is made of metal or plastic material or molded with plastic insulating material to cover the sensing element; the signal processor has a signal amplifier, a microprocessor, a paired key switch, a power circuit unit, a signal transmission unit, a memory unit, and RF The antenna and the warning unit; the connecting wire assembly is arranged on the bush to electrically connect the sensing element and the signal processor.

Description

Bolt clamping force sensing washer

This creation is to provide a bolt clamping force sensing washer, especially one that can prevent loosening and monitor the tightening state of bolts.

In the bolt locking operation, how to lock the bolt to a uniform clamping force has always been the ultimate goal of the locking technology. In addition, whether the locked bolts will loosen due to vibration and cause huge industrial safety accidents and damages is an important issue of concern to the industry.

Nowadays, the most accurate control accuracy of bolt locking force is undoubtedly the bolt tension tester designed with ultrasonic technology, but its production and construction costs are high and it is always difficult to popularize. In addition, the use of sensing bolts that can sense the clamping force of the bolt (paste a deformation sensing element on the appropriate position of the bolt axis to detect the clamping force) is also limited by the high price and only the use of open wrenches for locking As a result, construction is inconvenient and inefficient, and it is difficult to popularize. To control and detect the tightening force of bolts, you can also use Bolt Transducer, Center-hole type Compression Load Cell, or piezoelectric sensing ring for axial force sensing. The device is an alternative. However, in practice, regardless of the cost of production, the difficulty of use, and the accuracy of control, the above solutions will cause problems such as loosening and danger due to vibration or man-made damage. If there is no design to prevent loosening and a mechanism for remotely monitoring the tightening status to provide instant notification of abnormalities, even precise control of the torque or tightening force is futile.

In addition, the use of bolt pressure sensors or through-hole load cells, etc., can monitor the change in the clamping force of bolt locking, but the bolts are locked due to the close hardness of the bolt pressure sensor or through-hole load cell and the anti-loosening washer. When tightened, the serrated ribs of the anti-loosening washer cannot enter the end face of the bolt pressure sensor or the through-hole load cell, and the effect of preventing the bolt from loosening cannot be achieved.

After careful research by the creator, a bolt clamping force sensing washer was developed, which has the functions of preventing loosening and monitoring the tightening state of bolts. The bolt clamping force induction washer created by this invention can improve the lack of conventional technology, enhance the effective use of the industry, and meet the development needs of the industry 4.0 trend. The bolt clamping force sensing washer of this creation can not only control the clamping force during the bolt locking process, but also prevent the bolt fasteners from loosening due to vibration after locking, and can be used in wired or wireless mode. , To monitor whether the bolt lock state is loose due to vibration or man-made damage, to ensure the safety of the structure, and to track and check the construction records and responsibilities.

This creation provides a bolt clamping force induction washer, which includes: an induction washer, which has a body, a sensing element, and a bush; the body is made of metal, and it has a coaxial shaft hole with the outer diameter of the screw thread of the bolt. The two end faces of the main body and the shaft hole perpendicular to each other have anti-loose structures; the outer ring of the main body has a concave ring groove, and the sensing element is attached to the ring groove to measure the axial force generated by the main body Deformation sensing value; the bushing is made of metal or plastic material or molded with plastic insulating material to cover the sensing element; signal processor, which has a signal amplifier, a microprocessor, a paired key switch, and a power circuit unit , A signal transmission unit, a memory unit, an RF antenna and a warning unit; and a connection line assembly, which is arranged on the bushing to electrically connect the sensing element and the signal processor.

In one embodiment, the anti-loosening structure of the two end surfaces of the main body and the shaft hole perpendicular to the shaft hole are both arc-shaped rib surfaces or both wedge-shaped cam surfaces, or the anti-loosening structure of one end surface is an arc rib surface, and the other end surface The anti-loosening structure is a wedge-shaped cam surface.

In an embodiment, the anti-loosening structure of the end surface of the body perpendicular to the shaft hole is an arc rib surface, and the slope angle of the arc cross section of the arc rib surface is greater than the lead angle of the bolt and is in line with the screw of the bolt. The direction is irrelevant.

In one embodiment, the anti-loosening structure of the end surface of the body perpendicular to the shaft hole is a wedge cam surface, the inclination angle of the wedge cam of the wedge cam surface is greater than the lead angle of the bolt, and the inclination direction of the wedge cam is in line with The screw direction of the bolt is the same.

In one embodiment, the anti-loosening structure of the end surface of the body perpendicular to the shaft hole is a wedge-shaped cam surface, the wedge-shaped cam surface is matched with an anti-loosening washer, and the wedge-shaped cam surface of the main body and the wedge-shaped cam surface of the anti-loosening washer Corresponding to each other.

In one embodiment, the inclination angle of the cross section of the serrated rib of the serrated rib surface on the back of the wedge cam surface of the anti-loosening washer is greater than the lead angle of the bolt, and the inclination direction of the cross section of the serrated rib is equal to the The screw direction of the bolt is opposite.

In one embodiment, the body and the anti-loosening washer have the same hardness, and the hardness of the body and the anti-loosing washer are both greater than the hardness of the bolt head of the bolt and the surface hardness of the fixed part.

In one embodiment, the sensing element is a resistive strain gauge or a pressure sensing element to measure the deformation sensing value generated by the axial force of the body.

In one embodiment, the signal processor wirelessly transmits the deformation sensing value to the controller of the torque tool to control the clamping force of the bolt; the signal processor transmits to the gateway in a wired or wireless manner The deformation sensing value is uploaded to the monitoring device, and when the deformation sensing value exceeds the preset value, the monitoring device issues a warning signal.

In this way, the bolt clamping force sensing washer of this invention can prevent loosening and monitor the tightening state of the bolt.

In order to fully understand the purpose, features and effects of this creation, we will use the following specific examples and accompanying drawings to give a detailed description of this creation, as follows:

Please refer to Figure 1, Figure 2A, Figure 2B, Figure 5, Figure 8, Figure 11, Figure 14, Figure 17, as shown in the figure, which is a bolt clamping force sensing washer body 11 and Its anti-loose structure. The two end surfaces of the main body 11 made of metal material that are coaxial and perpendicular to the shaft hole 111 are made of curved rib surfaces 113 as shown in Fig. 1 and both end surfaces 1b and 1c are wedge-shaped cam surfaces. 114 or the two end surfaces of 1d and 1e in FIG. 1 are a combination of wedge-shaped cam surface 114 and arc-shaped rib surface 113 respectively. 1a of Fig. 1 utilizes the arc-shaped rib surface 113. The slope angle 1132 of the arc-shaped rib 1131 is greater than the lead angle 53 of the bolt 5. The anti-loosening structure of Fig. 1a is suitable for left- or right-screw bolts. The inclination angle 1142 of the wedge cam 1141 of the wedge cam surface 114 of 1b and 1c is greater than the lead angle 53 of the bolt 5 to prevent the bolt 5 from loosening by tension rather than friction. In Fig. 1b and 1c The anti-loosening structure can be used with the anti-loosing washer 4 shown in FIGS. 2A and 2B. The anti-loosening structure of 1d and 1e in FIG. 1 is formed with an arc-shaped rib surface 113 on one side and a wedge-shaped cam surface 114 on the other side for use with one of the anti-loosing washers 4 of FIGS. 2A and 2B. The wedge cam surfaces 114 of the body 11 of 1b, 1c, 1d, and 1e of FIG. 1 are all consistent with the size and hardness of the wedge cam surface 41 of the matching anti-loosening washer 4, and the bolts 5 and the fixed parts 7 used are better The surface hardness is high. The inclination angle 1142 of the wedge cam 1141 of the body 11 is the same as the spiral direction of the bolt 5 used. The inclination angle 422 of the serrated rib 421 of the serrated rib surface 42 on the back of the wedge cam surface 41 of the lock washer 4 is the same as the inclination angle 412 of the wedge cam 411 on the other end surface of the lock washer 4, but is inclined The direction is opposite.

Please refer to Figure 3, Figure 4, Figure 5 and Figure 22. As shown in the figure, this author provides a bolt force sensing washer (Bolt Force Sensing Washer), which includes a sensing washer 1, a signal processor 2, and a connecting wire Combination 3. The induction washer 1 has a body 11, a sensing element 12, and a bushing 13. The body 11 has a coaxial shaft hole 111 with the outer diameter of the thread 52 of the bolt 5, and the outer ring of the body 11 has a concave ring groove 112 The two end surfaces of the main body 11 perpendicular to the shaft hole 111 respectively have an anti-loose structure, and the anti-loose structure may be an arc-shaped rib surface 113; the sensing element 12 is attached to the ring groove 112 to sense the main body 11 is the deformation sensing value caused by the clamping force generated when the bolt 5 is locked; the bushing 13 is made of metal or plastic material or molded with a plastic insulating material to cover and protect the sensing element 12; The signal processor 2 has a microprocessor 21, a signal amplifier 22, a paired key switch 23, a power circuit unit 24 (can be a mains or battery), a signal transmission unit 25 (can be a transmission interface card), and a memory unit 26 (can be Memory or memory card), RF antenna 27 (or Bluetooth), and warning unit 28 (which can be a buzzer or warning light), the signal amplifier 22, the paired key switch 23, the power circuit unit 24, the signal transmission The unit 25, the memory unit 26, the RF antenna 27 and the warning unit 28 are electrically connected to the microprocessor 21. The paired key switch 23 can be replaced by a radio frequency tag for identification. In addition, the signal processor 2 may also have Display, pairing recognition, positioning and lightning protection... and other functions for outdoor use. The position and clamping force status of the bolt 5 are transmitted to the cloud server 92 (as shown in Figure 16) as a remote based on preset parameters. Monitor, or give a warning when the variation of the tightening force of the bolt 5 exceeds the preset range. Furthermore, the induction washer 1 can be checked to obtain the difference between the magnitude of its axial force and the resulting deformation sensing value The relational expression of is stored in the memory unit 26 of the signal processor 2; the connecting wire assembly 3 can pass through the bushing 13 to electrically connect the sensing element 12 and the signal processor 2.

As described above, when the bolt 5 passes through the shaft hole 111 of the body 11 of the induction washer 1, the through hole 71 of the fixed part 7 and the screw hole 81 of the fixed member 8 for locking. In the process, the signal transmission unit 25 of the signal processor 2 receives the deformation sensing value from the induction washer 1, and the microprocessor 21 of the signal processor 2 continuously calculates the change of the tightening force, and synchronizes wirelessly ( Such as RF antenna) to the controller 91 (the controller is a pneumatic, electric or hydraulic torque locking tool controller), when the controller 91 is locked to the target tightening force, the controller 91 immediately cuts off the power source, and at the same time prompts the operator with a sound or light signal. After being locked, the plurality of arc ribs 1131 (as shown in FIG. 5) of the arc rib surface 113 of the two end faces of the induction washer 1 will be respectively embedded into the bottom of the bolt head 51 of the bolt 5 and the fixed part 7, the induction washer 1 can prevent the bolt 5 from loosening due to vibration due to the anti-loosening structure of the two end faces. In addition, when the two end faces of the induction washer 1 have the arc rib surface 113, the bolt 5 can It is a right or left screw bolt. As shown in Figure 22, the sensor gasket 1 can be electrically connected to the gateway 29 (Gateway) and peripheral monitoring devices (such as cloud) through the signal processor 2 in a wired (such as RS485) or wireless (such as RF antenna) manner. The server 92) is used for remote monitoring. The gateway 29 may add a setting device (such as GPS) or a lightning protection device for outdoor use as needed, and transmit the position of the bolt 5 and the state of the clamping force to the preset parameters. The cloud server 92 performs remote monitoring. When the variation of the tightening force of the bolt 5 exceeds the set range, the warning unit 28 of the signal processor 2 or the controller 91 can immediately issue an alarm. In addition, multiple signal processors 2 can be electrically connected to the same gateway 29, and then forwarded to peripheral facilities such as the controller 91 or the cloud server 92. Furthermore, the signal processor 2 and the induction washer 1 can also be used separately, but the end surface of the body 11 of the induction washer 1 or the appropriate position on the bushing 13 should be attached for identification or reading The components for verifying related parameters of the induction washer 1, such as the factory serial number of the induction washer 1, one or two-dimensional barcode or radio frequency tag, etc., can be obtained when the induction washer 1 is electrically connected to the signal processor 2. The calibration parameters of the washer 1 are used as the calculation of the clamping force value and other related processing, such as memory, transmission and monitoring...etc. In this way, the bolt clamping force sensing washer of this creation can not only grasp the change of the clamping force generated during the locking process of the bolt 5, after locking, it can also continuously monitor the tightening state, and prevent it from being caused by vibration. In case of loose or man-made damage, an immediate warning will be issued to ensure the sustainable safety of the structure. In addition, the construction information stored in the memory unit 26 of the signal processor 2 can also provide tracking and checking of related responsibilities.

Please refer to Figure 1, Figure 2A, Figure 2B, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10 and Figure 11, as shown in the figure, in this embodiment, the body 11 of the induction washer 1 and the shaft The anti-loosening structure of the two vertical end surfaces of the hole 111 can be a wedge cam surface 114 having a plurality of wedge cams 1141 arranged radially on the two end surfaces in a circular ring shape. The inclination angle 1142 of the wedge cam 1141 of the wedge cam surface 114 of the main body 11 is greater than the lead angle 53 of the bolt 5.

Please refer to Figure 1, Figure 2A, Figure 2B, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10 and Figure 11. As shown in the figure, the clamping force sensing washer 1 can be used with the anti-loosening washer 4. The anti-loosening washer 4 is separately arranged on the two end surfaces of the main body 11 to prevent the wedge-shaped cam surface 41 of the loosening washer 4 and the wedge-shaped cam surface 114 of the main body 11 from engaging with each other to prevent loosening. The body 11 is made of metal, and the hardness of the body 11 is the same as the hardness of the anti-loosening washer 4 (the variation of the hardness is within the allowable design range), and the hardness of the body 11 is greater than the bolt head of the bolt 5 The hardness of 51 and the hardness of the fixed part 7.

Please refer to Figure 1, Figure 2A, Figure 2B, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10 and Figure 11, as shown in the figure, in this embodiment, the body 11 is used with the anti-loosening gasket The wedge cam surface 41 of 4 has a plurality of wedge cams 411 with the same size and structure as the wedge cam surface 114 of the main body 11, and they are also arranged radially in a circular ring. The other side of the anti-loosening washer 4 is a serrated rib surface 42, which has a plurality of serrated ribs 421 arranged in a circular ring radially and facing the end surface of the fixed part 7. When the bolt 5 is locked, The serrated rib 421 bites into the surface of the fixed member 7.

Please refer to Figure 2A, Figure 6, Figure 7, Figure 8 and Figure 14, as shown in the figure, in this embodiment, the bolt 5 used is a right-hand thread, the inclination angle 1142 of the wedge cam 1141 of the body 11 and the anti-loosening The inclination direction of the inclination angle 412 of the wedge cam 411 of the washer 4 is the same as the spiral direction of the bolt 5. The inclination angle 422 of the serrated rib 421 of the serrated rib surface 42 of the lock washer 4 is the same as the inclination angle 412 of the wedge cam 41 of the lock washer 4, but the inclination direction is opposite.

Please refer to Figure 1, Figure 2A, Figure 2B, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, and Figure 17, as shown in the figure, in this embodiment, the body 11 and the shaft hole 111 are perpendicular The anti-loosening structure of the two end faces can be a mixed application of the aforementioned two forms. The end face of the body 11 facing the bottom of the bolt head 51 of the bolt 5 is an arc-shaped rib surface 113. When the bolt 5 is locked, the arc-shaped rib 1131 directly ridges Into the bottom of the bolt head 51, there is no need to use the anti-loosening washer 4; in addition, the end surface facing the fixed part 7 is a wedge-shaped cam surface 114, and the wedge-shaped cam surface 114 has a plurality of wedge cams 1141. The cams 1141 are arranged radially on the end surface of the main body 11 in a circular ring shape, and the inclination angle 1142 is greater than the lead angle 53 of the bolt 5.

Please refer to Figure 1, Figure 2A, Figure 2B, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, and Figure 17, as shown in the figure, in this embodiment, the body 11 faces the end face of the fixed part 7 The wedge-shaped cam surface 114 can be used with one of a set of two-piece anti-loosening washer 4, and the anti-loosing washer 4 is engaged with the wedge-shaped cam surface 114 of the main body 11 by the wedge-shaped cam surface 41 to prevent loosening. The anti-loosening washer 4 embeds the serrated rib 421 of the serrated rib surface 42 on the back of the wedge cam surface 41 into the end surface of the fixed part 7. The slope angle 422 of the serrated rib 421 is greater than the lead angle 53 of the bolt 5, The inclination direction of the cross section of the serrated rib 421 is opposite to the spiral direction of the bolt 5. Its principle of action is the same as that described above.

Please refer to FIG. 4, FIG. 7, FIG. 10, FIG. 13, FIG. 16, FIG. 18, and FIG. 19. As shown in the figure, in one embodiment, the connection line assembly 3 may be a connector 311 combined with a double-joint connection line 32 , Or the connection line combination 3 can be a single-terminal connection line 31, and the sensing signal line 121 (as shown in FIG. 4) of the sensing element 12 is electrically connected to the connector 311, as shown in FIG. 18, the sensing element 12 is electrically connected to the connector 20 of the signal processor 2 through the connector 311 on the bushing 13 and the connector 312 of the double connector cable 32, or the single connector cable 31 is electrically connected to the connector as shown in FIG. For sensing the signal line 121, the single-joint connection line 31 passes through the bush 13 and is electrically connected to the connector 20 of the signal processor 2.

Please refer to FIG. 4, FIG. 7, FIG. 10, FIG. 13, and FIG. 16. As shown in the figures, in one embodiment, the sensing element 12 is a resistive strain gauge or a pressure sensing element (such as a piezoelectric sheet). To measure the deformation sensing value of the body 11 caused by the axial force.

Please refer to FIG. 20 and FIG. 21. As shown in the figures, in one embodiment, the signal processor 2 and the induction washer 1 are paired and electrically connected. After the induction washer 1 is verified, the memory unit 26 of the signal processor 2 stores the relationship curve between the deformation sensing value of the body 11 and the corresponding axial clamping force, and each induction washer 1 is electrically connected to its The signal processor 2 can be paired and used. As shown in Figure 20, when the bolt clamping force induction washer of this creation is checked, the bolt 5, the induction washer 1, the standard load element 72, the fixed part 7 and the locking member 8 are locked to the induction washer 1 and Within the design capability of the standard load cell 72, the bolt 5 passes through the shaft hole 111 of the induction washer 1, the through hole 721 of the standard load cell 72, and the through hole 71 of the fixed part 7 to be locked to the washer The screw hole 81 of the locking member 8 is then applied torsion force to generate an axial load to obtain the deformation sensing value of the induction washer 1 and the axial force value of the standard load cell 72 to establish the deformation sense of the induction washer 1 The relationship curve between the measured value and the clamping force is stored in the memory unit 26 of the signal processor 2 electrically connected to the induction washer 1 or the surrounding memory device, and the serial number of the induction washer 1 and related calibration parameters are Store together. In addition, as shown in Figure 21, the bolt clamping force induction washer of this creation can also be used to apply an axial force to the induction washer 1 and the coaxially positioned standard load element 72 through the force-applying workpiece 73, and press down the fixed part 7 To obtain the deformation sensing value of the induction washer 1 and the axial force of the standard load cell 72 within the design capability range of the induction washer 1 and the standard load cell 72 to establish the deformation sense of the induction washer 1 The relationship curve between the measured value and the clamping force is stored in the memory unit 26 of the signal processor 2 electrically connected to the induction washer 1 or the surrounding memory device, and the serial number of the induction washer 1 and related calibration parameters are Store together. When verifying a plurality of sensing washers 1, the code of each sensing washer 1 and the verification parameters are input into the memory unit 26 of the signal processor 2 for pairing recording. In addition, the code of each sensing washer 1 and the verification parameters can also be stored in a peripheral memory device or a cloud database for downloading and inputting to the signal processor 2 for calculation during construction. Furthermore, the code of each induction washer 1 together with the verification parameters can also be made into a one-dimensional or two-dimensional bar code and attached to the periphery of the bushing 13 or the connection signal line 31 connected to the bushing 13. The user can be wired or wireless The scanner scans the barcode to input the code and verification parameters of the induction washer 1 to the signal processor 2 for pairing operation.

Please refer to Figure 3, Figure 6, Figure 9, Figure 12 and Figure 15. As shown in the figure, in one embodiment, the power circuit unit 24 is a rechargeable battery, a commercial power source or a solar power source, and the microprocessor 21 is connected to the When the capacity of the power circuit unit 24 is lower than the limit, the warning unit 28 sends a reminder to replace or repair the power circuit unit 24.

Please refer to FIG. 22. As shown in the figure, in one embodiment, the signal processor 2 checks whether the fastening state of the sensing washer 1 is within a preset range at a preset time and transmits data to an external device (such as control Device 91 or cloud server 92), or the external device (such as controller 91 or cloud server 92) is electrically connected to the memory unit 26 of the signal processor 2 in a wired or wireless manner to check the fastening of the sensor washer 1 Whether the status is within the preset range. As described above, when the bolt 5 performs the locking operation, the bolt 5 passes through the shaft hole 111 of the body 11, the through hole 71 of the fixed part 7, and the screw hole 81 of the fixed member 8 to lock the fixed part. 7 and the locked firmware 8. In the process, the signal transmission unit 25 of the signal processor 2 receives the deformation sensing value from the induction washer 1, and the microprocessor 21 of the signal processor 2 continuously calculates the change of the tightening force, and synchronizes it with a wired ( (Such as RS485) or wireless (such as RF antenna) to the built-in controller 91 of the electric impact torque tool (as shown in Figure 22) or connected to the controller 91 of the pneumatic impact wrench (as shown in Figure 22), The controller 91 is a pneumatic, electric or hydraulic power source controller. When the bolt 5 reaches the target value of the tightening force set on the controller 91, the controller 91 immediately cuts off the power source, and at the same time prompts the operator with a sound or a light signal. After the bolt 5 is locked, the plurality of arc ribs 1131 of the arc rib surface 113 on the two end faces of the induction washer 1 (as shown in FIGS. 1 and 4) will respectively penetrate into the bottom and the bolt head 51 of the bolt 5 On the top of the fixed part 7, the induction washer 1 can prevent the bolt 5 from loosening due to vibration by the anti-loosening structure of the two end faces. As shown in Fig. 22, the sensing washer 1 can be remotely monitored through a gateway 29 (Gateway) electrically connected to the signal processor 2 and peripheral monitoring devices (such as a cloud server 92). The gateway The device 29 may optionally add a positioning device (such as GPS) or a lightning protection device for outdoor use, and transmit the position and clamping force status of the bolt 5 to the cloud server 92 for remote monitoring according to preset parameters. When the variation of the tightening force of the bolt 5 exceeds the set range, the warning unit 28 of the signal processor 2 or the controller 91 can immediately issue an alarm. In addition, multiple signal processors 2 can be electrically connected to a gateway 29 and then forwarded to the controller 91 or the cloud server 92 and other peripheral facilities. Furthermore, the signal processor 2 and the induction washer 1 can also be used separately, but the end face of the induction washer 1 or the appropriate position on the bushing 13 should be attached to identify or read the induction washer 1 The components for verifying related parameters, such as the factory serial number, two-dimensional barcode or radio frequency tag of the induction washer 1, when the induction washer 1 is electrically connected to the signal processor 2, the calibration parameters of the induction washer 1 can be obtained, It is used as the calculation of the clamping force value and other related processing, such as memory, transmission and monitoring...etc. In this way, the bolt clamping force sensing washer of this invention can not only grasp the construction quality of the bolt 5, but also continuously monitor its tightened state to ensure the sustainable safety of the structure. In addition, the construction information stored in the memory unit 26 of the signal processor 2 can also provide tracking and checking of related responsibilities.

This creation has been disclosed in a preferred embodiment above, but those familiar with this technology should understand that this embodiment is only used to describe the creation, and should not be interpreted as limiting the scope of the creation. It should be noted that all changes and replacements equivalent to this embodiment should be included in the scope of this creation. Therefore, the protection scope of this creation shall be subject to the scope of the patent application.

1: induction washer 11: body 111: Shaft hole 112: Ring groove 113: Arc ribbed noodles 1131: radius ribs 1132: slope angle 114: wedge cam surface 1141: wedge cam 1142: Tilt angle 12: Sensing element 121: Sensing signal line 13: Bush 2: signal processor 20: Connector 21: Microprocessor 22: signal amplifier 23: Pairing key switch 24: Power circuit unit 25: Signal transmission unit 26: memory unit 27: RF antenna 28: Warning unit 29: Gateway 3: Connection line combination 31: Single connector cable 32: Double connector cable 311: Connector 312: Connector 4: Anti-loose gasket 41: wedge cam surface 411: Wedge Cam 412: Tilt Angle 42: Serrated rib noodles 421: seratted ribs 422: tilt angle 5: Bolt 51: Bolt head 52: Thread 53: Lead angle 6: External device 7: fixed parts 71: Through hole 72: Standard load element 721: Through Hole 73: Forced Workpiece 8: locked firmware 81: screw hole 91: Controller 92: Cloud Server

[Figure 1] is a schematic diagram of various anti-loosening structures of bolt clamping force induction washers in the specific embodiment of this creation. [Figure 2A] is a schematic diagram of a bolt clamping force sensing washer used in combination with an anti-loosening washer for the right screw bolt in the specific embodiment of the invention. [Figure 2B] is a schematic diagram of the bolt clamping force sensing washer used in combination with the anti-loosening washer of the left screw bolt in the specific embodiment of the invention. [Figure 3] is a schematic diagram of the combination of the bolt clamping force sensing washer and the right screw bolt applied to the right screw bolt in the specific embodiment of this creation. [Figure 4] is an exploded schematic diagram of the bolt clamping force sensing washer in Figure 3 and applied to the left and right spiral bolts. [Figure 5] is a cross-sectional schematic diagram of the anti-loosening structure of the combined application of the main body common to both left and right screws in Figure 3. [Figure 6] is a schematic diagram of the combination of the bolt clamping force sensing washer and the right screw bolt applied to the specific embodiment of this creation. [Figure 7] is an exploded schematic diagram of the bolt clamping force sensing washer of Figure 6 and its application to the right screw bolt. [Figure 8] is a cross-sectional schematic diagram of the anti-loosening structure of the combination application of the induction washer for the right screw bolt in Figure 6. [Figure 9] is a schematic diagram of the combination of the bolt clamping force sensing washer and the left screw bolt used in the specific embodiment of the invention. [Figure 10] is an exploded schematic diagram of the bolt clamping force sensing washer of Figure 9 and its application to the left screw bolt. [Figure 11] is a cross-sectional schematic diagram of the anti-loosening structure of the combined application of the induction washer for the left screw bolt of Figure 9. [Fig. 12] is another schematic diagram of the combination of the bolt clamping force sensing washer and the right screw bolt applied to the right screw bolt in the specific embodiment of this creation. [Figure 13] is another exploded schematic diagram of the bolt clamping force sensing washer of Figure 12 and its application to the right screw bolt. [Fig. 14] It is a schematic cross-sectional view of another anti-loosening structure of the combination application of the induction washer for the right screw bolt of Fig. 12. [Figure 15] is another schematic diagram of the combination of the bolt clamping force sensing washer and the left screw bolt applied to the specific embodiment of the invention. [Figure 16] is another exploded schematic view of the bolt clamping force sensing washer of Figure 15 and its application to the left screw bolt. [Fig. 17] It is a schematic cross-sectional view of another anti-loosening structure of the combination application of the induction washer for the left screw bolt of Fig. 15. [Figure 18] is a schematic diagram of the composition of the bolt clamping force sensing washer of the specific embodiment of this creation. [Figure 19] is another schematic diagram of the composition of the bolt clamping force sensing washer of the specific embodiment of this creation. [Figure 20] is a schematic diagram of the verification of the induction washer of the bolt clamping force induction washer of the specific embodiment of this creation. [Figure 21] is another schematic diagram of the verification of the induction washer of the bolt clamping force induction washer of the specific embodiment of the invention. [Figure 22] is a schematic diagram of the application of the bolt clamping force induction washer in the specific embodiment of this creation.

1: induction washer

11: body

111: Shaft hole

112: Ring groove

113: Arc ribbed noodles

12: Sensing element

121: Sensing signal line

13: Bush

3: Connection line combination

31: Single connector cable

5: Bolt

51: Bolt head

52: Thread

7: fixed parts

71: Through hole

8: locked firmware

81: screw hole

Claims (9)

A bolt clamping force sensing washer, which includes: An induction washer, which has a body, a sensing element, and a bushing; the body is made of metal, and it has a coaxial shaft hole in combination with the outer diameter of the screw thread of the bolt, and the two end surfaces of the body and the shaft hole perpendicular to the shaft hole respectively have a loosening prevention structure; The outer ring of the body has a concave ring groove, and the sensing element is attached to the ring groove to measure the deformation sensing value generated by the axial force of the body; the bushing is made of metal or plastic material Or use plastic insulating material to cast and mold to cover the sensing element; A signal processor, which has a signal amplifier, a microprocessor, a paired key switch, a power circuit unit, a signal transmission unit, a memory unit, an RF antenna, and a warning unit; and The connecting wire assembly is arranged on the bushing to electrically connect the sensing element and the signal processor. The bolt clamping force induction washer according to claim 1, wherein the anti-loosening structure of the two end faces of the body perpendicular to the shaft hole are both arc-shaped rib surfaces or both wedge-shaped cam surfaces, or the anti-loosing structure of one end surface is The arc-shaped rib surface, and the anti-loosening structure on the other end surface is a wedge-shaped cam surface. The bolt clamping force induction washer according to claim 2, wherein the anti-loosening structure of the end surface of the body perpendicular to the shaft hole is an arc rib surface, and the slope angle of the arc section of the arc rib surface is greater than that of the bolt The lead angle has nothing to do with the screw direction of the bolt. The bolt clamping force sensing washer according to claim 2, wherein the anti-loosening structure of the end surface of the body perpendicular to the shaft hole is a wedge cam surface, and the inclination angle of the wedge cam of the wedge cam surface is greater than the lead angle of the bolt , And the inclination direction of the wedge cam is the same as the spiral direction of the bolt. The bolt clamping force induction washer according to claim 4, wherein the anti-loosening structure of the end surface of the body perpendicular to the shaft hole is a wedge-shaped cam surface, the wedge-shaped cam surface is matched with an anti-loosening washer, and the wedge-shaped cam surface of the body is The wedge-shaped cam surfaces of the anti-loosening washer are corresponding to each other and engage. The bolt clamping force sensing washer according to claim 5, wherein the inclination angle of the serrated rib section of the serrated rib surface on the back of the wedge cam surface of the anti-loosening washer is greater than the lead angle of the bolt, and the serrated rib The inclination direction of the cross section of the shaped rib is opposite to the spiral direction of the bolt. The bolt clamping force induction washer according to claim 5 or 6, wherein the body and the anti-loosening washer have the same hardness, and the hardness of the body and the anti-loosing washer are both greater than the hardness and the hardness of the bolt head of the bolt. The surface hardness of the fixture. The bolt clamping force sensing washer according to claim 1, wherein the sensing element is a resistive strain gauge or a pressure sensing element to measure the deformation sensing value generated by the axial force of the body. The bolt clamping force sensing washer according to claim 1, wherein the signal processor wirelessly transmits the deformation sensing value to the controller of the torque tool to control the clamping force of the bolt; the signal processor uses The deformation sensing value is transmitted to the gateway in a wired or wireless manner and uploaded to the monitoring device. When the deformation sensing value exceeds a preset value, the monitoring device sends out an alarm.

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