A sensor fatigue tester

Abstract

The embodiment of the application provides a sensor fatigue test machine, the sensor fatigue test machine includes a torque test assembly, the torque test assembly includes a support fixing seat and a driving module, the support fixing seat has a sensor mounting area, and the sensor mounting area is used for mounting a sensor. The driving module includes a force rod and two driving members, the force rod has a first section, a second section and a connecting area, the first section and the second section are located on the opposite sides of the connecting area along the extension direction of the force rod, and the two driving members are correspondingly driven and connected with the first section and the second section, so as to adjust the size and direction of the torque applied to the force rod through mutual cooperation. The connecting area is used for interfacing with the sensor to transmit the torque to the sensor. The sensor fatigue test machine of the embodiment of the application has good test effect.

Description

Technical Field

[0001] This application relates to the field of torque measurement technology, and in particular to a sensor fatigue testing machine. Background Technology

[0002] Joint torque sensors are core mechanical sensing devices in industrial robots, collaborative robots, and precision assembly equipment. Their torque fatigue performance directly determines the long-term stability, reliability, and safety of the equipment, and is a core indicator for sensor factory testing, periodic calibration, and performance verification. In the production and testing process of joint torque sensors, it is necessary to test the sensor's fatigue life, torque stability, and failure threshold by simulating reciprocating torque fatigue loading under real-world working conditions, providing data support for sensor quality control. However, in related technologies, equipment used for testing the torque fatigue of sensors has poor testing results, making it difficult to effectively perform torque fatigue testing on sensors. Summary of the Invention

[0003] In view of this, the main objective of the embodiments of this application is to provide a sensor fatigue testing machine with good testing performance.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows: This application provides a sensor fatigue testing machine, including: A torque testing assembly includes a support base and a drive module. The support base has a sensor mounting area for mounting a sensor. The drive module includes a force-applying rod and two drive components. The force-applying rod has a first section, a second section, and a connecting area. The first section and the second section are located on opposite sides of the connecting area along the extension direction of the force-applying rod. The two drive components are respectively driven and connected to the first section and the second section to adjust the magnitude and direction of the torque applied to the force-applying rod through mutual cooperation. The connecting area is used to dock with the sensor to transmit the torque to the sensor.

[0005] In one embodiment, the torque testing assembly includes a first adapter plate and a second adapter plate. The first adapter plate is disposed on the connection area, and the second adapter plate is disposed on the sensor mounting area. The first adapter plate and the second adapter plate are respectively connected to opposite sides of the sensor.

[0006] In one embodiment, the first adapter plate includes a plurality of first connecting holes and a plurality of second connecting holes. Each first connecting hole is arranged circumferentially around the center of the first adapter plate and is used to connect to the sensor. Each second connecting hole is arranged circumferentially around the center of the first adapter plate and is located outside the first connecting hole. A plurality of third connecting holes are formed on the connection area, and the third connecting holes are connected to the second connecting holes one by one. The torque testing component includes a plurality of first connectors, and the first connectors are inserted into the third connecting holes and the second connecting holes.

[0007] In one embodiment, the second adapter plate includes a plurality of fourth connecting holes and a plurality of fifth connecting holes. Each of the fourth connecting holes is arranged circumferentially around the center of the second adapter plate and is used to connect to the sensor. Each of the fifth connecting holes is arranged circumferentially around the center of the second adapter plate and is located outside the fourth connecting holes. The sensor mounting area has a sixth connecting hole, and the fifth connecting hole communicates with the sixth connecting hole. The torque testing assembly includes a plurality of second connectors, and the second connectors pass through the sixth connecting hole and the fifth connecting hole.

[0008] In one embodiment, a plurality of first through holes are formed through a portion of the first segment, and each of the first through holes is arranged at intervals along the extension direction of the force-adding rod. At each of the first through holes, the first segment is formed with a first positioning part, which is used to position and cooperate with the corresponding driving member. A portion of the second segment forms multiple second through holes, each of which is spaced apart along the extension direction of the force-adding rod. At each of the second through holes, the second segment forms a second positioning part, which is used to position and cooperate with the corresponding driving member.

[0009] In one embodiment, the first positioning part is a first fastening hole, the second positioning part is a second fastening hole, and the drive rod of the drive member has a third fastening hole. The first fastening hole and the second fastening hole are respectively connected to the third fastening hole of the corresponding drive member and are fastened together by fasteners.

[0010] In one embodiment, the sensor fatigue testing machine further includes a frame with a working platform, and the drive module further includes two fixed bases, which are detachably mounted on the working platform; The fixed base has multiple mounting hole groups, and the drive member can be selectively and detachably connected to one of the mounting hole groups. Each mounting hole group has multiple mounting holes, and each mounting hole of the mounting hole group is arranged circumferentially around the center of the fixed base, and each mounting hole group is spaced apart in a direction away from the center of the fixed base.

[0011] In one embodiment, the sensor fatigue testing machine further includes a frame with a working platform, the support fixing seat is mounted on the working platform, the support fixing seat includes a support fixing plate and at least two support reinforcing ribs, the support fixing plate has the sensor mounting area, and the support reinforcing ribs are disposed on the side of the support fixing plate opposite to the drive module; along the extension direction of the force-applying rod, one support reinforcing rib is respectively disposed on each of the opposite sides of the sensor mounting area.

[0012] In one embodiment, the driving component is a cylinder, the driving component is located on the bottom side of the force-applying rod, and the piston rod of the cylinder is drivenly connected to the end of the force-applying rod; The sensor fatigue testing machine includes a drive control component, which includes a controller, an air tank, two solenoid valves, and two electro-proportional valves. The air tank and the two cylinders form an air supply path through one of the electro-proportional valves and one of the solenoid valves, respectively. Each of the solenoid valves and the electro-proportional valves is signal-connected to the controller.

[0013] In one embodiment, the sensor fatigue testing machine further includes a data acquisition component and a computer, wherein the data acquisition component is connected to the sensor and the computer via signals, respectively.

[0014] In one embodiment, the sensor fatigue testing machine further includes a frame with a working platform. The sensor fatigue testing machine includes a plurality of torque testing components, each of which is spaced apart on the working platform, and the spacing direction of each of the torque testing components is perpendicular to the extension direction of the force-applying rod.

[0015] This application provides a sensor fatigue testing machine, which includes a torque testing component. A support base has a sensor mounting area for mounting a sensor. The drive module includes a force-applying rod and two drive members. The force-applying rod has a first section, a second section, and a connecting area. The first and second sections are located on opposite sides of the connecting area along the extension direction of the force-applying rod. The two drive members are respectively driven and connected to the first and second sections to adjust the magnitude and direction of the torque applied to the force-applying rod through mutual cooperation. The connecting area is used to connect with the sensor to transmit the torque to the sensor. Thus, by applying torque to the force-applying rod through the mutual cooperation of the two drive members, the force-applying rod tends to rotate around its axis (i.e., the center of the connecting area), and the torque is transmitted to the sensor through the connecting area. This enables better torque fatigue testing of the sensor, resulting in a better testing effect for the sensor fatigue testing machine. Furthermore, since the torque applied to the force bar is achieved through two driving components connected to the first and second segments, when it is necessary to adjust the torque on the sensor, the magnitude and direction of the torque can be adjusted by the cooperation of the two driving components. This facilitates the sensor fatigue testing machine to perform bidirectional torque loading fatigue testing on the sensor, making the testing more convenient and further improving the testing effect of the sensor fatigue testing machine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sensor fatigue testing machine according to an embodiment of this application; Figure 2 for Figure 1 Schematic diagram of the medium torque testing component; Figure 3 for Figure 2 Exploded view of the torque testing component; Figure 4 for Figure 3 Schematic diagram of the structure of the first adapter plate; Figure 5 for Figure 3 Schematic diagram of the structure of the second adapter plate; Figure 6 for Figure 3 A schematic diagram of the sensor structure; Figure 7 for Figure 3 Schematic diagram of the structure of the central support fixing plate; Figure 8 for Figure 3 Schematic diagram of the structure of the central support fixing seat; Figure 9 for Figure 2 Another structural schematic diagram of the torque testing component; Figure 10 for Figure 9 Schematic diagram of the middle reinforcement bar; Figure 11 for Figure 10 A magnified view of a section at point A in the middle; Figure 12 for Figure 10 A magnified view of a section at point B in the middle; Figure 13 for Figure 3 Schematic diagram of the structure of the fixed base; Figure 14 This is a control principle diagram of the sensor fatigue testing machine of this application; the straight arrows in the diagram indicate the air inlet direction of the air pipe.

[0017] Explanation of reference numerals in the attached figures 10. Torque testing assembly; 11. Support mounting base; 11a. Sensor mounting area; 11aa. Sixth connecting hole; 111. Support mounting plate; 112. Support reinforcing rib; 12. Drive module; 121. Force rod; 121a. Third connecting hole; 121b. First through hole; 121c. First positioning part; 121d. Second through hole; 121e. Second positioning part; 1211. First section; 1212. Second section; 1213. Connecting area; 122. Drive component ; 123, Fixed base; 123a, Mounting hole; 13, First adapter plate; 13a, First connecting hole; 13b, Second connecting hole; 14, Second adapter plate; 14a, Fourth connecting hole; 14b, Fifth connecting hole; 20, Frame; 21, Working platform; 30, Drive control assembly; 31, Controller; 32, Air tank; 33, Solenoid valve; 34, Electro-proportional valve; 40, Data acquisition assembly; 50, Computer; 60, Sensor; 70, Electrical control cabinet. Detailed Implementation

[0018] In this application, the orientation or positional relationship of "top" and "bottom" is based on the appendix. Figure 2 The orientation or positional relationship shown is intended to facilitate the description of this application and to simplify the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] One embodiment of this application provides a sensor fatigue testing machine; please refer to [link / reference]. Figure 1 The sensor fatigue testing machine includes a torque testing component 10.

[0022] Please see Figure 2 and Figure 9 The torque testing assembly 10 includes a support base 11 and a drive module 12. The support base 11 has a sensor mounting area 11a for mounting a sensor 60. The drive module 12 includes a force-applying rod 121 and two drive members 122. The force-applying rod 121 has a first segment 1211, a second segment 1212, and a connecting area 1213. The first segment 1211 and the second segment 1212 are located on opposite sides of the connecting area 1213 along the extension direction of the force-applying rod 121. The two drive members 122 are respectively driven connected to the first segment 1211 and the second segment 1212 to adjust the magnitude and direction of the torque applied to the force-applying rod 121 through mutual cooperation. The connecting area 1213 is used to dock with the sensor 60 to transmit torque to the sensor 60.

[0023] Specifically, the sensor fatigue testing machine can be used to measure the fatigue life, torque stability and failure threshold of sensor 60.

[0024] Sensor 60 can be any type of torque sensor. For example, a torque sensor can be a multi-dimensional force sensor. A multi-dimensional force sensor is a force sensor capable of simultaneously measuring force and torque components in two or more directions. In a Cartesian coordinate system, force and torque can each be decomposed into three components. Therefore, the most complete form of multi-dimensional force is a six-dimensional force / torque sensor, which can simultaneously measure three force components (Fx, Fy, Fz) and three torque components (Mx, My, Mz). A multi-dimensional force sensor can be a six-dimensional force / torque sensor or other types of force / torque sensors. Torque sensors are well-suited for measuring rotational forces and can be applied in fields such as humanoid robots, precision assembly, aerospace, and medical equipment. For example, in the field of industrial robots, torque sensors can be used to measure the torque and force at the joints of robots.

[0025] The torque testing component 10 is the core testing structure in the sensor fatigue testing machine, and it is used to measure the sensor 60.

[0026] The sensor fatigue testing machine described in this application is well-suited for use in industrial robotics, precision manufacturing, and calibration institutions. For example, it can be used for factory calibration and periodic maintenance of six-dimensional force sensors at the robot's end effector, improving force control accuracy. It can also be used to calibrate sensors in automated testing equipment, ensuring accurate force value detection. Furthermore, it can provide an efficient and precise weight loading and unloading solution, supporting sensor calibration services.

[0027] The sensor mounting area 11a is an area on the support and fixing base 11 for mounting the sensor 60. The support and fixing base 11 can support and fix the sensor 60, so that the torque of the drive module 12 can be applied to the sensor 60 better.

[0028] The driving component 122 is a structure that provides driving force, and its specific structural type can be set according to actual conditions. For example, the driving component 122 is a cylinder. Using a cylinder for driving has the characteristics of fast action speed and sensitive response, which can greatly improve the testing efficiency of the sensor fatigue testing machine.

[0029] Of course, in other embodiments, the drive unit 122 may also adopt other drive structures, such as hydraulic cylinders, electric push rods, etc.

[0030] The force-adding rod 121 is a long rod structure. The first segment 1211, the second segment 1212 and the connecting area 1213 are different regions on the force-adding rod 121, and the connecting area 1213 is the region located between the first segment 1211 and the second segment 1212.

[0031] It is understandable that the first segment 1211, the connecting area 1213, and the second segment 1212 are connected, but the difference lies in the different functions they perform.

[0032] The first segment 1211 is used to connect with a drive member 122 to receive driving force from the drive member 122. The second segment 1212 is used to connect with another drive member 122 to receive driving force from the drive member 122.

[0033] The connecting area 1213 is used to dock with the sensor 60. Since the first segment 1211 and the second segment 1212 are located on opposite sides of the connecting area 1213, the torque can be applied to the force rod 121 through the cooperation of the two driving components 122, and then transmitted to the sensor 60 through the connecting area 1213.

[0034] It should be noted that the specific cooperation method of the two driving components 122 can be set according to the actual situation, as long as they can apply torque to the force-adding rod 121 through mutual cooperation, and the magnitude and direction of the torque can be adjusted by adjusting the driving force.

[0035] For example, a single drive element 122 can provide driving force to apply torque to the force bar 121 and the sensor 60. By alternately switching the output driving force of different drive elements 122, bidirectional torque loading can be achieved. That is, the two drive elements 122 operate alternately, with one drive element 122 providing driving force while the other does not, thus facilitating precise control based on testing.

[0036] For example, two drive components 122 simultaneously provide driving forces in opposite directions to apply torque to the force-applying rod 121 and the sensor 60. By simultaneously changing the direction of the driving forces of the two drive components 122, bidirectional torque loading can be achieved. This improves the torque loading range of the sensor fatigue testing machine.

[0037] For example, two drive components 122 can simultaneously provide driving forces in the same direction. By adjusting the magnitude of the driving forces of the two drive components 122, the magnitude and direction of the resultant torque can be changed.

[0038] It should be noted that the connection area 1213 is connected to the sensor 60, which means that the connection area 1213 can transmit the torque applied by the drive component 122 to the sensor 60. The specific connection method between the two is not limited.

[0039] For example, the connection area 1213 is directly connected to the sensor 60, and the two are in direct contact and fixedly connected, thereby directly transmitting torque.

[0040] For example, the connection area 1213 and the sensor 60 are connected indirectly, that is, the two are connected through other intermediate structures (such as adapter plates) to achieve docking, so that the torque applied by the drive unit 122 can be transmitted to the sensor 60 through the intermediate structure.

[0041] In the sensor fatigue testing machine of this application embodiment, two driving members 122 cooperate to apply torque to the force-applying rod 121, causing the force-applying rod 121 to tend to rotate around the axis (i.e., the center of the connecting area 1213). The torque is then transmitted to the sensor 60 through the connecting area 1213, thereby enabling better torque fatigue testing of the sensor 60 and resulting in better testing performance. Furthermore, since the torque applied to the force-applying rod 121 is achieved through two driving members 122 driven by the first segment 1211 and the second segment 1212, when it is necessary to adjust the torque on the sensor 60, the magnitude and direction of the torque can be adjusted by the cooperation of the two driving members 122. This facilitates bidirectional torque loading fatigue testing of the sensor 60 by the sensor fatigue testing machine, making the testing more convenient and further improving the testing effect of the sensor fatigue testing machine.

[0042] In related technologies, testing equipment often employs joint modules or servo reducers, achieving torque loading through a 90-degree swing motion. This structure is not only costly to manufacture and maintain, but also suffers from slow response and testing speed, significantly limiting testing efficiency. In contrast, the sensor fatigue testing machine of this application uses two drive components 122 to rotate the force rod 121, transmitting torque to the sensor 60. This results in a lower overall manufacturing cost and easier maintenance. Furthermore, the sensor fatigue testing machine can achieve bidirectional torque loading to simulate actual working conditions, offering fast response and high testing speed, significantly improving testing efficiency. Moreover, its test data more closely reflects the actual usage scenarios of the sensor 60.

[0043] In one embodiment, please refer to Figure 2 and Figure 3 The torque testing assembly 10 includes a first adapter plate 13 and a second adapter plate 14. The first adapter plate 13 is disposed on the connection area 1213, and the second adapter plate 14 is disposed on the sensor mounting area 11a. The first adapter plate 13 and the second adapter plate 14 are respectively connected to opposite sides of the sensor 60. This improves the installation stability of the sensor 60 and facilitates torque transmission to the sensor 60.

[0044] Specifically, the first adapter plate 13 is a torque transmission structure disposed between the force-adjusting rod 121 and the sensor 60, and the connection area 1213 is connected to the sensor 60 through the first adapter plate 13. The second adapter plate 14 is a torque transmission structure disposed between the support fixing base 11 and the sensor 60. The sensor mounting area 11a is connected to the sensor 60 through the second adapter plate 14.

[0045] It should be noted that the specific connection methods between the first adapter plate 13 and the second adapter plate 14 and the sensor 60 can be set according to the actual situation.

[0046] For example, please see Figure 4 , Figure 6 and Figure 9 The first adapter plate 13 includes multiple first connecting holes 13a and multiple second connecting holes 13b. Each first connecting hole 13a is circumferentially arranged around the center of the first adapter plate 13 and is used to connect to the sensor 60. Each second connecting hole 13b is circumferentially arranged around the center of the first adapter plate 13 and is located outside the first connecting holes 13a. Multiple third connecting holes 121a are formed on the connection area 1213, and each third connecting hole 121a corresponds to and communicates with one of the second connecting holes 13b. The torque testing assembly 10 includes multiple first connectors, which pass through the third connecting holes 121a and the second connecting holes 13b. Therefore, the first adapter plate 13 can effectively transmit torque to the sensor 60.

[0047] Specifically, the first connection hole 13a on the first adapter plate 13 is used to connect to the sensor 60.

[0048] In fact, the sensor 60 includes an inner flange, an outer flange, and a connecting beam. The outer flange has a receiving space, and the inner flange is disposed within the receiving space and spaced apart from the outer flange. The connecting beam is disposed at the gap between the inner and outer flanges, and its opposite ends are connected to the inner and outer flanges, respectively. The inner flange has multiple seventh connecting holes, which correspond one-to-one with the first connecting holes 13a and are fastened together by fasteners.

[0049] The second connecting hole 13b on the first adapter plate 13 is used to communicate with the third connecting hole 121a on the connecting area 1213, and is connected through the first connector. It is understood that the specific type of the first connector can be set according to the actual situation. For example, the first connector may be a fastener.

[0050] It should be noted that each of the first connecting holes 13a is arranged circumferentially around the center of the first adapter plate 13 to form a first annular hole group, and each of the second connecting holes 13b is arranged circumferentially around the center of the first adapter plate 13 to form a second annular hole group. The second annular hole group is located on the outer layer of the first annular hole group.

[0051] Therefore, when the driving member 122 applies driving force to the force-applying rod 121, the force-applying rod 121 tends to rotate. Since the second connecting hole 13b is located outside the first connecting hole 13a, the force-applying rod 121 can better apply torque to the sensor 60 through the first adapter plate 13, thereby achieving a better testing effect.

[0052] For example, please refer to Figures 5 to 7The second adapter plate 14 includes multiple fourth connecting holes 14a and multiple fifth connecting holes 14b. Each fourth connecting hole 14a is circumferentially arranged around the center of the second adapter plate 14 and is used to connect to the sensor 60. Each fifth connecting hole 14b is circumferentially arranged around the center of the second adapter plate 14 and is located outside the fourth connecting holes 14a. The sensor mounting area 11a has a sixth connecting hole 11aa, and the fifth connecting holes 14b communicate with the sixth connecting hole 11aa. The torque testing assembly 10 includes multiple second connectors, which pass through the sixth connecting hole 11aa and the fifth connecting holes 14b. This allows for better fixation of the sensor 60, facilitating force application to the sensor 60.

[0053] Specifically, the fourth connection hole 14a on the second adapter plate 14 is used to connect to the sensor 60.

[0054] In fact, the outer flange has multiple eighth connection holes, which correspond one-to-one with the fourth connection hole 14a and are fastened together by fasteners.

[0055] The fifth connecting hole 14b on the second adapter plate 14 is used to communicate with the sixth connecting hole 11aa on the sensor mounting area 11a, and is connected via a second connector. The specific type of the second connector can be set according to actual conditions. For example, the second connector can be a fastener.

[0056] It should be noted that each of the fourth connecting holes 14a is arranged circumferentially around the center of the second adapter plate 14 to form a third annular hole group, and each of the fifth connecting holes 14b is arranged circumferentially around the center of the second adapter plate 14 to form a fourth annular hole group. The fourth annular hole group is located outside the third annular hole group.

[0057] Therefore, when the torque applied by the drive component 122 is transmitted to the sensor 60, the support and fixing seat 11 can better fix the outer flange of the sensor 60, which is beneficial for the sensor fatigue testing machine to test the torque on the sensor 60.

[0058] It should be noted that the mating method between the sixth connecting hole 11aa and the fifth connecting hole 14b is not limited.

[0059] For example, the sensor mounting area 11a has multiple sixth connection holes 11aa, and the sixth connection holes 11aa are connected to the fifth connection holes 14b in a one-to-one correspondence.

[0060] For example, the sensor mounting area 11a has a plurality of sixth connection holes 11aa, which extend along the top-bottom direction, and different areas of at least one sixth connection hole 11aa are connected to a plurality of fifth connection holes 14b.

[0061] In some embodiments, the force transmission mechanism of the torque testing assembly 10 may further include a ball joint connection structure.

[0062] In one embodiment, please refer to Figure 10 and Figure 11 A portion of the first segment 1211 forms multiple first through holes 121b, which are spaced apart along the extension direction of the force-applying rod 121. At each first through hole 121b, the first segment 1211 has a first positioning part 121c, which is used to position and engage with the corresponding driving member 122. Therefore, the driving member 122 can be positioned in different areas of the first segment 1211 according to actual needs, making the position of the driving member 122 adjustable. This allows for adjustment of the length of the test lever arm, thereby expanding the torque loading range.

[0063] Specifically, the first segment 1211 of the force-adding rod 121 has multiple first through holes 121b. On the one hand, by forming the through hole structure, the overall weight of the first segment 1211 of the force-adding rod 121 can be reduced, making it easier for the driving member 122 to apply torque to the first segment 1211. On the other hand, each first through hole 121b is also provided with a first positioning part 121c. By cooperating with different first positioning parts 121c, the driving member 122 can be positioned at different first through holes 121b, thereby facilitating the adjustment of the position of the driving member 122.

[0064] The first positioning part 121c can be used to position the driving member 122. On the one hand, it facilitates the movement of the driving member 122 to different positions of the first segment 1211 to apply driving force. On the other hand, it can also improve the stability of the driving connection between the driving member 122 and the first segment 1211.

[0065] The specific structural form of the first positioning part 121c can be set according to the actual situation.

[0066] For example, please see Figure 11 The first positioning part 121c is a first fastening hole, and the drive rod of the drive member 122 has a third fastening hole. The first fastening hole communicates with the corresponding third fastening hole of the drive member 122 and is fastened together by fasteners. That is to say, by communicating with different first fastening holes and being fastened by fasteners, the drive member 122 can apply driving force to the force-applying rod 121 at different positions, thereby realizing the adjustment of torque.

[0067] In one embodiment, please refer to Figure 10 and Figure 12A portion of the second segment 1212 forms multiple second through holes 121d, which are spaced apart along the extension direction of the force-applying rod 121. At each second through hole 121d, the second segment 1212 has a second positioning part 121e, which is used for positioning and engaging with the corresponding driving member 122. Therefore, the driving member 122 can be positioned in different areas of the second segment 1212 according to actual needs, making the position of the driving member 122 adjustable. This allows for adjustment of the length of the test lever arm, thereby expanding the torque loading range.

[0068] Specifically, a plurality of second through holes 121d are formed on the second segment 1212 of the force-adding rod 121. On the one hand, by forming the through hole structure, the overall weight of the second segment 1212 of the force-adding rod 121 can be reduced, making it easier for the driving member 122 to apply torque to the second segment 1212. On the other hand, a second positioning part 121e is also provided at each of the second through holes 121d. By cooperating with different second positioning parts 121e, the driving member 122 can be positioned at different second through holes 121d, thereby facilitating the adjustment of the position of the driving member 122.

[0069] The second positioning part 121e can be used to position the drive member 122. On the one hand, it facilitates the movement of the drive member 122 to different positions of the second segment 1212 to apply driving force. On the other hand, it can also improve the stability of the drive connection between the drive member 122 and the second segment 1212.

[0070] The specific structural form of the second positioning part 121e can be set according to the actual situation.

[0071] For example, please see Figure 12 The second positioning part 121e is a second fastening hole, and the drive rod of the drive member 122 has a third fastening hole. The second fastening hole communicates with the corresponding third fastening hole of the drive member 122 and is fastened together by fasteners. In other words, by communicating with different second fastening holes and being fastened by fasteners, the drive member 122 can apply driving force to the force-applying rod 121 at different positions, thereby achieving torque adjustment.

[0072] Of course, in other embodiments, the lever arm can also be adjusted by replacing the lever 121 with one of different lengths.

[0073] In one embodiment, please refer to Figure 1 and Figure 13 The sensor fatigue testing machine also includes a frame 20 with a working platform 21, and the drive module 12 also includes two fixed bases 123, which are detachably mounted on the working platform 21.

[0074] The fixed base 123 has multiple mounting hole groups, and the drive member 122 can be selectively and detachably connected to one mounting hole group. Each mounting hole group has multiple mounting holes 123a, and the mounting holes 123a of each mounting hole group are arranged circumferentially around the center of the fixed base 123, and the mounting hole groups are spaced apart in a direction away from the center of the fixed base 123. Therefore, different specifications (such as different cylinder diameters and different output forces) of the drive member 122 can be replaced according to different measurement requirements of the sensor 60, which can better adapt to the testing requirements of different specifications of the sensor 60.

[0075] Specifically, the mounting holes on the fixed base 123 are used to connect with the drive component 122. In fact, the drive component 122 also has multiple hole structures, which can correspond to the mounting holes 123a of the mounting hole group and be fastened by fasteners, so that the drive component 122 can be mounted on the fixed base 123 and then fixed on the work platform 21 of the frame 20.

[0076] By providing multiple mounting hole groups on the fixed base 123, different mounting hole groups can be adapted to different drive components 122, thereby facilitating the installation of drive components 122 of different specifications on the fixed base 123.

[0077] A mounting hole group refers to a collection of mounting holes 123a used for connecting to the same drive member 122. Within the same mounting hole group, each mounting hole 123a is arranged circumferentially around the center of the fixed base 123. That is, the mounting hole group is arranged in a ring shape. However, for different mounting hole groups, each mounting hole group is arranged at intervals from the inside out, thereby enabling better matching of drive members 122 of different sizes.

[0078] It should be noted that the frame 20 is the support frame of the sensor fatigue testing machine, and its material type can be set according to the actual situation.

[0079] For example, the frame 20 is assembled from aluminum alloy profiles. Compared with traditional steel structure welding, aluminum alloy profiles have the advantages of being lightweight, high-strength, and easy to assemble.

[0080] In one embodiment, please refer to Figure 1 , Figure 3 and Figure 8The sensor fatigue testing machine also includes a frame 20 with a working platform 21. A support and fixing base 11 is mounted on the working platform 21. The support and fixing base 11 includes a support and fixing plate 111 and at least two support reinforcing ribs 112. The support and fixing plate 111 has a sensor mounting area 11a, and the support reinforcing ribs 112 are located on the side of the support and fixing plate 111 opposite to the drive module 12. Along the extension direction of the force-applying rod 121, a support reinforcing rib 112 is provided on each opposite side of the sensor mounting area 11a. Therefore, the support and fixing base 11 has sufficient rigidity to withstand torque loads, which improves the support and fixing effect of the support and fixing base 11 on the sensor 60.

[0081] Specifically, the support and fixing plate 111 is a plate structure for mounting the sensor 60. The support reinforcing rib 112 and the sensor 60 are located on opposite sides of the support and fixing plate 111, which facilitates the structural arrangement of the two.

[0082] The supporting reinforcing rib 112 can strengthen the supporting fixing plate 111. By setting a supporting reinforcing rib 112 on each side of the sensor mounting area 11a, the structural strength of the area on both sides of the sensor mounting area 11a can be increased, thereby improving the installation stability of the sensor 60.

[0083] It should be noted that the specific connection method between the support fixing plate 111 and the support reinforcing rib 112 is not limited.

[0084] For example, the support fixing plate 111 and the support reinforcing rib 112 are integrally formed. This can further improve the structural strength of the support fixing seat 11.

[0085] For example, the support fixing plate 111 and the support reinforcing rib 112 are fixed by bolts, which makes it easy to disassemble the support fixing plate 111 and the support reinforcing rib 112.

[0086] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 14 The driving component 122 is a cylinder, which is located on the bottom side of the force-applying rod 121. The piston rod of the cylinder is driven to the end of the force-applying rod 121.

[0087] The sensor fatigue testing machine includes a drive control component 30, which comprises a controller 31, an air tank 32, two solenoid valves 33, and two electro-proportional valves 34. An air supply path is formed between the air tank 32 and the two cylinders, passing through one electro-proportional valve 34 and one solenoid valve 33 respectively. Each solenoid valve 33 and electro-proportional valve 34 is signal-connected to the controller 31. Therefore, different air pressure values ​​can be set according to testing requirements, thereby adjusting the torque, loading speed, and cycle frequency.

[0088] In fact, the sensor fatigue testing machine adopts a pneumatic control combination of "cylinder + solenoid valve 33 + electro-proportional valve 34". The solenoid valve 33 controls the timing of the cylinder's action, and the electro-proportional valve 34 precisely controls the cylinder's air pressure, thereby adjusting the torque. The controller 31 uniformly schedules and realizes precise torque control and automatic switching. Compared with the traditional joint module and servo reducer's 90-degree swing drive method, this drive control component 30 is simpler, has a lower failure rate, lower maintenance cost, and faster response speed, greatly improving testing efficiency and adapting to batch testing needs; at the same time, compared with the traditional single servo drive, it also has better economy and convenience.

[0089] Specifically, the drive control component 30 has two air supply paths to supply air to the two cylinders respectively, and each air supply path is equipped with an electro-proportional valve 34 and a solenoid valve 33. Thus, the controller 31 can control the on / off state of each air supply path respectively, thereby achieving precise timing control of the actions of the two cylinders.

[0090] The air tank 32 can effectively stabilize the pressure and ensure a stable air supply, thereby effectively preventing air pressure fluctuations from affecting torque accuracy.

[0091] The specific type of controller 31 can be set according to the actual situation. For example, controller 31 is a PLC control system (Programmable Logic Controller).

[0092] The specific type of the electro-proportional valve 34 can be set according to the actual situation. For example, the electro-proportional valve 34 is an SMA electro-proportional valve, that is, an electro-proportional control valve with shape memory alloy (SMA) as the actuator.

[0093] Depending on the actual situation, the electric proportional valve 34 can be integrated into the electrical control cabinet 70 and connected to all cylinders through the air circuit assembly.

[0094] The two cylinders can be symmetrically distributed on opposite sides of the extension rod 121.

[0095] In one specific embodiment, the controller 31 adopts a PLC control system, thereby overcoming the limitation of traditional pneumatic fatigue testing, which can only cycle through a single fixed torque value. By integrating the electro-proportional valve 34 with the PLC control system (corresponding to the core control component in the electrical control cabinet 70), different torque values ​​can be automatically switched within a set time period through a preset program of the PLC, without manual intervention. This can accurately simulate the stress scenarios of multiple torque alternation under real working conditions, filling the gap that traditional testing equipment cannot adapt to complex torque conditions, and improving the authenticity and reference value of the test data.

[0096] In one embodiment, please refer to Figure 1 The sensor fatigue testing machine also includes a frame 20 with a working platform 21. The machine includes multiple torque testing components 10, which are spaced apart on the working platform 21, with the spacing direction of each component perpendicular to the extension direction of the force bar 121. By setting multiple sets of torque testing components 10, fatigue testing of multiple sensors 60 can be performed simultaneously, significantly improving batch testing efficiency and shortening the testing cycle.

[0097] Specifically, for each torque test component 10, each torque test component 10 is arranged independently and installed side by side on the working platform 21. Each torque test component 10 has the same structure and can work independently.

[0098] The number of torque testing components 10 in the sensor fatigue testing machine is unlimited. For example, the sensor fatigue testing machine includes 4 sets of torque testing components 10.

[0099] In fact, by employing multiple sets of independent torque testing components 10, each set of torque testing components 10 can be controlled independently without interference, allowing for parallel testing of multiple sensors 60 simultaneously. At the same time, the controller 31 enables multi-station collaborative work, allowing for unified setting of common parameters and individual adjustment of differentiated parameters for each station, significantly improving batch testing efficiency and overcoming the shortcomings of traditional single-station equipment, such as long testing cycles and poor coordination among multi-station equipment.

[0100] In one embodiment, please refer to Figure 1 and Figure 14 The sensor fatigue testing machine also includes a data acquisition component 40 and a computer 50, with the data acquisition component 40 connected to the sensor 60 and the computer 50 respectively.

[0101] Specifically, the data acquisition component 40 can be integrated into the electrical control cabinet 70. It can collect key information such as torque data, loading frequency, and test time of each group of torque testing components 10 in real time, and automatically plot torque-time and torque-cycle fatigue curves. The data sampling frequency is adjustable. The collected data is automatically stored in the computer 50, which can realize centralized management, query and export of multi-station data, facilitating batch analysis and quality traceability. The computer 50 can automatically generate fatigue test reports without the need for manual data processing.

[0102] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in a specific embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0103] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the protection scope of this application.

Claims

1. A sensor fatigue testing machine, characterized in that, include: A torque testing assembly includes a support base and a drive module. The support base has a sensor mounting area for mounting a sensor. The drive module includes a force-applying rod and two drive components. The force-applying rod has a first section, a second section, and a connecting area. The first section and the second section are located on opposite sides of the connecting area along the extension direction of the force-applying rod. The two drive components are respectively driven and connected to the first section and the second section to adjust the magnitude and direction of the torque applied to the force-applying rod through mutual cooperation. The connecting area is used to dock with the sensor to transmit the torque to the sensor.

2. The sensor fatigue testing machine according to claim 1, characterized in that, The torque testing assembly includes a first adapter plate and a second adapter plate. The first adapter plate is disposed on the connection area, and the second adapter plate is disposed on the sensor mounting area. The first adapter plate and the second adapter plate are respectively connected to the opposite sides of the sensor.

3. The sensor fatigue testing machine according to claim 2, characterized in that, The first adapter plate includes multiple first connecting holes and multiple second connecting holes. Each first connecting hole is circumferentially arranged around the center of the first adapter plate and is used to connect to the sensor. Each second connecting hole is circumferentially arranged around the center of the first adapter plate and is located outside the first connecting holes. Multiple third connecting holes are formed on the connection area, and each third connecting hole corresponds to and communicates with one of the second connecting holes. The torque testing assembly includes multiple first connecting members, which pass through the third connecting holes and the second connecting holes; and / or, The second adapter plate includes a plurality of fourth connecting holes and a plurality of fifth connecting holes. Each of the fourth connecting holes is arranged circumferentially around the center of the second adapter plate and is used to connect to the sensor. Each of the fifth connecting holes is arranged circumferentially around the center of the second adapter plate and is located outside the fourth connecting holes. The sensor mounting area has a sixth connecting hole, and the fifth connecting hole communicates with the sixth connecting hole. The torque testing assembly includes a plurality of second connectors, which pass through the sixth connecting hole and the fifth connecting hole.

4. The sensor fatigue testing machine according to any one of claims 1-3, characterized in that, A portion of the first segment forms multiple first through holes, each of which is spaced apart along the extension direction of the force-adding rod. At each of the first through holes, the first segment forms a first positioning part, which is used to position and cooperate with the corresponding driving component. A portion of the second segment forms multiple second through holes, each of which is spaced apart along the extension direction of the force-adding rod. At each of the second through holes, the second segment forms a second positioning part, which is used to position and cooperate with the corresponding driving member.

5. The sensor fatigue testing machine according to claim 4, characterized in that, The first positioning part is a first fastening hole, the second positioning part is a second fastening hole, and the drive rod of the drive member has a third fastening hole. The first fastening hole and the second fastening hole are respectively connected to the third fastening hole of the corresponding drive member and are fastened together by fasteners.

6. The sensor fatigue testing machine according to any one of claims 1-3, characterized in that, The sensor fatigue testing machine also includes a frame with a working platform, and the drive module also includes two fixed bases, which are detachably mounted on the working platform; The fixed base has multiple mounting hole groups, and the drive member can be selectively and detachably connected to one of the mounting hole groups. Each mounting hole group has multiple mounting holes, and each mounting hole of the mounting hole group is arranged circumferentially around the center of the fixed base, and each mounting hole group is spaced apart in a direction away from the center of the fixed base.

7. The sensor fatigue testing machine according to any one of claims 1-3, characterized in that, The sensor fatigue testing machine also includes a frame with a working platform. The support and fixing seat is installed on the working platform. The support and fixing seat includes a support and fixing plate and at least two support reinforcing ribs. The support and fixing plate has the sensor mounting area. The support reinforcing ribs are arranged on the side of the support and fixing plate away from the drive module. Along the extension direction of the force rod, one support reinforcing rib is provided on each of the opposite sides of the sensor mounting area.

8. The sensor fatigue testing machine according to any one of claims 1-3, characterized in that, The driving component is a cylinder, which is located on the bottom side of the force-applying rod, and the piston rod of the cylinder is driven to the end of the force-applying rod. The sensor fatigue testing machine includes a drive control component, which includes a controller, an air tank, two solenoid valves, and two electro-proportional valves. The air tank and the two cylinders form an air supply path through one of the electro-proportional valves and one of the solenoid valves, respectively. Each of the solenoid valves and the electro-proportional valves is signal-connected to the controller.

9. The sensor fatigue testing machine according to any one of claims 1-3, characterized in that, The sensor fatigue testing machine also includes a data acquisition component and a computer, wherein the data acquisition component is connected to the sensor and the computer respectively.

10. The sensor fatigue testing machine according to any one of claims 1-3, characterized in that, The sensor fatigue testing machine also includes a frame with a working platform. The sensor fatigue testing machine includes a plurality of torque testing components, each of which is spaced apart on the working platform, and the spacing direction of each of the torque testing components is perpendicular to the extension direction of the force-applying rod.

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