Tooth plate fatigue test device

Abstract

The present application discloses a tooth plate fatigue test device, which includes: a base; a driving member, mounted on the base and used for power coupling connection with the tooth plate to drive the tooth plate to move in a first direction; a rotating member, rotatably mounted on the base, the first end of the rotating member being provided with a plurality of teeth for cooperating with the tooth surface to be tested of the tooth plate, the plurality of teeth being rotatable around a rotation axis under the drive of the tooth plate; a driven member, rotatably connected to the second end of the rotating member, the connection between the driven member and the rotating member being offset from the rotation axis, the driven member moving in a second direction under the drive of the rotating member, the first direction and the second direction being set at an angle; a sensor, mounted on the base, used to detect the motion state of the driven member. The fatigue test device of the present application can simulate the actual working conditions of the tooth plate in actual use, effectively test the fatigue performance of the tooth plate during actual working process, and collect relevant data through the sensor to facilitate subsequent optimization.

Description

Technical Field

[0001] The present application belongs to the technical field of tooth plate fatigue testing, and in particular relates to a tooth plate fatigue testing device. Background Art

[0002] Take, for example, the combustion gear plate of a variable compression ratio engine. This part, a high-speed reciprocating mechanism, places high demands on its fatigue performance. The complex shape and structure of this gear plate, coupled with its complex operating conditions, make accurate fatigue testing difficult with traditional fatigue testing equipment. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a tooth plate fatigue testing device that can simulate the actual working conditions of the tooth plate in actual use, effectively test the fatigue performance of the tooth plate during actual operation, and collect relevant data through sensors to facilitate subsequent optimization.

[0004] The present application provides a tooth plate fatigue testing device, comprising:

[0005] abutment;

[0006] a driving member, mounted on the base and used for being dynamically coupled to the tooth plate to drive the tooth plate to move along a first direction;

[0007] a rotating member rotatably mounted on the base, wherein a first end of the rotating member is provided with a plurality of teeth for engaging with the tooth surface to be tested of the tooth plate, the plurality of teeth being located on a same circle with the rotation axis of the rotating member as the center, and the plurality of teeth being rotatable around the rotation axis under the drive of the tooth plate;

[0008] a driven member rotatably connected to the second end of the rotating member, wherein the connection between the driven member and the rotating member is offset from the rotation axis, and the driven member moves along a second direction under the drive of the rotating member, and the first direction and the second direction are arranged at an angle;

[0009] A sensor is mounted on the base and is used to detect the motion state of the driven member.

[0010] According to the tooth plate fatigue test device of the present application, the tooth plate is driven by simulating the load in the actual working conditions through the driving part, the tooth surface to be tested is subjected to fatigue test through the cooperation between the rotating part and the tooth surface to be tested of the tooth plate, and the load is applied to the tooth plate through the cooperation of the driven part and the rotating part, so as to effectively test the fatigue performance of the tooth plate in the actual working process, and the motion state data of the driven part is collected by the sensor, thereby obtaining the fatigue performance parameters of the tooth plate during the fatigue test, which is convenient for subsequent optimization.

[0011] According to one embodiment of the present application, the first end of the driven member in the second direction is connected to the second end of the rotating member;

[0012] A guide groove is provided on the base, the second end of the follower in the second direction is slidably disposed in the guide groove, and the sensor is installed in the guide groove.

[0013] According to one embodiment of the present application, the sensor includes a pressure sensor, the second end of the follower is provided with an extension portion extending laterally thereof, and the pressure sensor is provided on a side of the extension portion facing the first end of the follower.

[0014] According to one embodiment of the present application, the sensor includes a displacement sensor, which is arranged in the guide groove and located on the side of the second end of the follower away from the first end of the follower, and the displacement sensor abuts against the second end of the follower.

[0015] According to one embodiment of the present application, a hook is provided at the second end of the rotating member, and a movably arranged movable shaft is provided at the first end of the driven member, the axis of the movable shaft is parallel to the rotating axis, and the movable shaft is fixedly connected to the hook.

[0016] According to one embodiment of the present application, a slide groove is provided in the first end of the driven member, a bearing slidably disposed in the slide groove, and the movable shaft is connected to the inner ring of the bearing;

[0017] Wherein, the extending direction of the sliding groove is set at an angle to the second direction.

[0018] According to one embodiment of the present application, the hook portion is provided with a first connecting hole, the movable shaft is provided with a second connecting hole, and the movable shaft is fixedly connected to the hook portion via a connecting piece passing through the second connecting hole and the first connecting hole.

[0019] According to one embodiment of the present application, a limiting groove is provided in the middle of the rotating member, and at least a portion of the first end of the follower in the second direction is located in the limiting groove and is rotatably connected to the second end of the rotating member.

[0020] According to one embodiment of the present application, the tooth portion is in point contact with the tooth surface to be tested of the tooth plate.

[0021] According to one embodiment of the present application, the tooth plate fatigue testing device further includes a mating component for being arranged on a side of the tooth plate away from the tooth surface to be tested and engaging with the non-test tooth surface of the tooth plate to move the tooth plate along a first direction.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 Schematic diagram of the structure of the tooth plate fatigue test device provided in an embodiment of the present application;

[0025] Figure 2 This is another structural diagram of the tooth plate fatigue test device provided in the embodiment of the present application.

[0026] Figure 3 is a schematic structural diagram of a rotating member provided in an embodiment of the present application;

[0027] Figure 4 It is a schematic diagram of the partial structure of the meshing of the tooth portion and the tooth plate provided in an embodiment of the present application.

[0028] Reference numerals:

[0029] 1. Tooth plate fatigue test device; 11. Base; 111. Guide groove; 12. Driving member; 13. Rotating member; 131. Tooth portion; 132. Limiting groove; 133. Rotating shaft; 134. Hook portion; 135. First connecting hole; 14. Follower; 141. Extension portion; 142. Bearing; 143. Movable shaft; 144. Second connecting hole; 15. Pressure sensor; 16. Displacement sensor; 17. Mating assembly;

[0030] 2. Tooth plate. DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0032] Take, for example, the combustion gear plate of a variable compression ratio engine. This part, a high-speed reciprocating mechanism, places high demands on its fatigue performance. The complex shape and structure of this gear plate, coupled with its complex operating conditions, make accurate fatigue testing difficult with traditional fatigue testing equipment.

[0033] Based on the above considerations, this application proposes a tooth plate fatigue test device that can simulate the actual working conditions of the tooth plate in actual use, effectively test the fatigue performance of the tooth plate during actual working process, and collect relevant data through sensors to facilitate subsequent optimization.

[0034] Reference below Figures 1-4 A tooth plate fatigue testing device according to an embodiment of the present application is described.

[0035] See also Figure 1 、 Figure 2 and Figure 3 The tooth plate fatigue testing device 1 of the embodiment of the present application includes a base 11, a driving member 12, a rotating member 13, a driven member 14 and a sensor.

[0036] The base 11 provides stable support to ensure the stability of the entire device and achieve accurate installation and positioning of the driver 12, rotating member 13, driven member 14 and sensor. The bottom of the base 11 can be provided with shock-absorbing materials or structures to reduce vibration interference during the test.

[0037] The driving member 12 is mounted on the base 11 and is used for being power-coupled with the tooth plate 2 to drive the tooth plate 2 to move along a first direction.

[0038] The driver 12 simulates the load in actual working conditions to ensure the simulation of the test. The driver 12 is dynamically coupled to the upper end of the tooth plate 2. It can be understood that the movement of the tooth plate 2 in the first direction when installed on the fatigue testing device can be equivalent to the movement of the tooth plate 2 in the working direction in actual working conditions.

[0039] The driving member 12 may be a servo motor or a stepping motor to achieve fine adjustment of speed and torque.

[0040] The rotating member 13 can be rotatably mounted on the base 11. The first end of the rotating member 13 is provided with a plurality of tooth portions 131 for cooperating with the tooth surface to be tested of the tooth plate 2. The plurality of tooth portions 131 are located on the same circle with the rotation axis of the rotating member 13 as the center. The plurality of tooth portions 131 can rotate around the rotation axis under the drive of the tooth plate 2.

[0041] Rotating member 13 is rotatably mounted on base 11 about its rotational axis. Multiple teeth 131 are provided at the first end of rotating member 13 to mesh with multiple teeth on the tooth surface to be tested of tooth plate 2. Movement of tooth plate 2 drives rotating member 13 to rotate, thereby simulating the stress state of tooth plate 2 under actual working conditions. The interaction between teeth 131 and tooth plate 2 enables accurate testing of the fatigue state of tooth plate 2. Multiple teeth 131 are located on a circle centered on the rotational axis of rotating member 13, ensuring stable contact between teeth 131 and tooth plate 2 during rotation of rotating member 13.

[0042] The number of the tooth portions 131 can be determined according to the tooth surface to be tested. For example, the tooth surface to be tested of the tooth plate 2 is provided with four tooth grooves, and the tooth portions 131 can be provided with four corresponding ones.

[0043] The follower 14 is rotatably connected to the second end of the rotating member 13. The connection between the follower 14 and the rotating member 13 is offset from the rotation axis. The follower 14 moves along the second direction under the drive of the rotating member 13. The first direction and the second direction are set at an angle.

[0044] The driven member 14 is rotatably engaged with the second end of the rotating member 13 so that when the rotating member 13 rotates, it can drive the driven member 14 to move, converting the rotational motion into linear motion along the second direction. By staggering the connection point between the driven member 14 and the rotating member 13 and the rotation axis, an asymmetric load is applied to the toothed plate 2, which is closer to actual working conditions. The angle between the first direction and the second direction is not limited here and is set according to actual design requirements.

[0045] The sensor is mounted on the base 11 and is used to detect the motion state of the follower 14 .

[0046] By setting up sensors, the motion state of the driven member 14 is collected in real time, and the fatigue performance parameters of the tooth plate 2 are monitored, providing accurate data support for subsequent analysis and optimization.

[0047] In actual execution, the driving member 12 applies a driving load to the tooth plate 2, driving the tooth plate 2 to move in a first direction. The tooth plate 2 drives the rotating member 13 to rotate, and the tooth portion 131 on the rotating member 13 engages with the tooth surface to be tested of the tooth plate 2, thereby performing a fatigue test on the tooth surface to be tested. When the rotating member 13 rotates, it drives the follower 14 to move in a second direction. The sensor collects the motion state data of the follower 14, and then can obtain the fatigue performance of the tooth plate 2 through calculation, providing a powerful testing and analysis basis for the optimization of the material and structure of the tooth plate 2.

[0048] According to the tooth plate fatigue testing device 1 of the embodiment of the present application, the tooth plate 2 is driven by simulating the load in the actual working conditions through the driving member 12, and the tooth surface to be tested of the tooth plate 2 is cooperated with the rotating member 13 to perform a fatigue test on the tooth surface to be tested. The load is applied to the tooth plate 2 by the follower 14 cooperating with the rotating member 13, so as to effectively test the fatigue performance of the tooth plate 2 in the actual working process, and the motion state data of the follower 14 is collected by the sensor, thereby obtaining the fatigue performance parameters of the tooth plate 2 during the fatigue test, which is convenient for subsequent optimization.

[0049] See also Figure 1 、 Figure 2 and Figure 3 According to some embodiments of the present application, the first end of the follower 14 in the second direction can be connected to the second end of the rotating member 13; a guide groove 111 can be provided on the base 11, and the second end of the follower 14 in the second direction can be slidably set in the guide groove 111, and the sensor can be installed in the guide groove 111.

[0050] The first end of the follower 14 in the second direction is connected to the second end of the rotating member 13, ensuring that the follower 14 can accurately receive and respond to the force transmitted by the rotating member 13, thereby achieving precise load application to the toothed plate 2. Through direct connection, energy loss and motion error in the transmission process are reduced, thereby improving the accuracy of the test.

[0051] By setting a guide groove 111 on the base 11 and slidably setting the second end of the follower 14 in the second direction in the guide groove 111, the guide groove 111 limits the movement direction of the follower 14, ensuring that it slides stably along the preset trajectory to avoid deviation. By limiting the freedom of movement of the follower 14, lateral displacement and shaking are reduced, and the accuracy of data acquisition is improved.

[0052] In one example, the guide groove 111 extends along the second direction, wherein the guide groove 111 may be a linear groove.

[0053] In another example, the guide groove 111 may be a curved groove to meet different test requirements.

[0054] By installing the sensor within guide slot 111, the motion state of follower 14, such as displacement, velocity, and acceleration, can be accurately captured, providing a direct basis for data analysis. This integration into guide slot 111 reduces the wiring complexity of the sensor and data acquisition system, improving the compactness and reliability of the device.

[0055] In some embodiments, the sensor may be a wireless sensor, which further simplifies the device layout and improves flexibility.

[0056] In some embodiments, the sensors can be mounted on the guide slot 111 from the outside inward, facilitating sensor replacement and adjustment, maintenance, and upgrades, to accommodate tests with varying precision requirements. Multiple sensor mounting locations can also be configured to adjust sensor positions as needed to capture the dynamic characteristics of the follower 14 at different stages.

[0057] See also Figure 1 and Figure 2 According to some embodiments of the present application, the sensor may include a pressure sensor 15, the second end of the follower 14 may be provided with an extension portion 141 extending laterally thereof, and the pressure sensor 15 may be provided on the side of the extension portion 141 toward the first end of the follower 14.

[0058] In this embodiment, the second end of the follower 14 can be arranged in a rod shape, the extension portion 141 is arranged on the circumferential side of the follower 14 and extends laterally, and the pressure sensor 15 is arranged on the side of the extension portion 141 facing the first end of the follower 14, so that the extension portion 141 can directly contact the pressure sensor 15 when the follower 14 moves. The pressure sensor 15 directly measures the pressure exerted on the follower 14 during the movement, providing direct force value data for evaluating the fatigue performance of the tooth plate 2.

[0059] In one example, the extension 141 can be circular, with at least a portion of the extension 141 surrounding the second end of the follower 14 and fixedly connected to the follower 14. The outer periphery of the extension 141 can contact the interior of the guide groove 111, forming a piston-like structure to effectively constrain the movement direction of the follower 14. The extension 141 can be made of a wear-resistant material. By contacting the extension 141 with the guide groove 111, the follower 14 is not directly involved in friction, thereby improving the durability of the device. The extension 141 can be fixed to the second end of the follower 14 using screws or bolts.

[0060] In another example, the extension portion 141 may be a bump that is directly opposite to the location where the pressure sensor 15 is disposed, so that the extension portion 141 contacts the pressure sensor 15 .

[0061] In some embodiments, an opening is provided at one end of the guide groove 111 in the second direction for the follower 14 to pass through. The pressure sensor 15 can be provided at the end of the guide groove 111 where the opening is provided, and extend into the guide groove 111 to facilitate contact with the extension portion 141 .

[0062] See also Figure 1According to some embodiments of the present application, the sensor may include a displacement sensor 16, which may be arranged in the guide groove 111 and may be located on the side of the second end of the follower 14 away from the first end of the follower 14, and the displacement sensor 16 may abut the second end of the follower 14.

[0063] The displacement sensor 16 can directly measure the displacement changes of the follower 14, providing key dynamic displacement data for the fatigue performance test of the tooth plate 2. Through direct contact with the follower 14, its movement state during the fatigue test is monitored in real time to ensure the timeliness and reliability of the data.

[0064] A rigid or elastic contact mode can be adopted between the sensor and the follower 14 to ensure contact stability and reduce wear.

[0065] For example, the displacement sensor 16 may be a high-precision, high-response speed model to accommodate small displacement changes of the follower 14 during high-speed motion.

[0066] See also Figure 2 and Figure 3 According to some embodiments of the present application, the second end of the rotating member 13 is provided with a hook 134, and the first end of the driven member 14 is provided with a movably set movable shaft 143, the axis of the movable shaft 143 is parallel to the rotating axis, and the movable shaft 143 is fixedly connected to the hook 134.

[0067] The movable shaft 143 is fixedly connected to the hook portion 134, and the axis of the movable shaft 143 is parallel to the rotation axis, so that when the rotating member 13 rotates, the movable shaft 143 can be driven to rotate around the rotation axis, and the movable shaft 143 remains parallel to the rotation axis, thereby improving the stability of the operation of the movable shaft 143. By movably setting the movable shaft 143 at the first end of the follower 14, when the movable shaft 143 drives the follower 14 to move, the movable shaft 143 can be adjusted with a certain degree of freedom relative to the follower 14, so that the follower 14 can move stably along the second direction, avoiding interference between the second end of the follower 14 and the guide groove 111.

[0068] According to some embodiments of the present application, a slide groove may be provided in the first end of the follower 14, a slidable bearing 142 may be provided in the slide groove, and the movable shaft 143 is connected to the inner ring of the bearing 142; wherein, the extension direction of the slide groove is set at an angle to the second direction.

[0069] The provision of bearing 142 allows the driving force of rotating member 13 to be stably transmitted to driven member 14 via movable shaft 143 and bearing 142, thereby improving the installation stability of movable shaft 143. The type of bearing 142 is not limited herein and may include cylindrical roller bearings 142, tapered roller bearings 142, spherical roller bearings 142, and the like. Bearings 142 of high precision, low friction, and suitable for bearing complex loads are preferably selected.

[0070] By setting a slide groove and making the outer ring of the bearing 142 movably installed in the slide groove, the movable shaft 143 can rotate relative to the follower 14, and can also move relative to the follower 14 in the radial direction of the movable shaft 143 to fine-tune the position. By setting the extension direction of the slide groove to be at an angle to the second direction, the influence of the circular motion of the movable shaft 143 on the linear motion of the follower 14 can be reduced.

[0071] The angle between the extension direction of the chute and the second direction is not limited here. The angle of the chute should be precisely designed based on the direction and magnitude of the oblique force that the follower 14 may be subjected to during the test to ensure smooth movement. For example, the angle between the extension direction of the chute and the second direction can be 90°.

[0072] See also Figure 2 and Figure 3 According to some embodiments of the present application, the hook portion 134 is provided with a first connecting hole 135, and the movable shaft 143 is provided with a second connecting hole 144. The movable shaft 143 is fixedly connected to the hook portion 134 through a connecting piece passing through the second connecting hole 144 and the first connecting hole 135.

[0073] By cooperating with the connecting hole and the connecting piece, the hook 134 and the movable shaft 143 are accurately aligned and fixed, thereby improving the stability and reliability of the connection. The connecting hole makes the assembly process more intuitive and simple, reduces the dependence on assembly accuracy, and improves assembly efficiency.

[0074] Exemplarily, the first connecting hole 135 may be a threaded hole, the second connecting hole 144 may be a stepped hole, and the connecting member may be a bolt, which passes through the second connecting hole 144 and is threadedly engaged with the first connecting hole 135 to achieve a fixed connection between the movable shaft 143 and the hook portion 134.

[0075] See also Figure 2 and Figure 3 In some embodiments, the surface of the hook portion 134 for connecting with the movable shaft 143 is adapted to match the shape of the outer circumference of the movable shaft 143 to ensure the stability of the connection between the hook portion 134 and the movable shaft 143 .

[0076] For example, the movable shaft 143 may be cylindrical, the surface of the hook portion 134 used for connecting with the movable shaft 143 may be an arc surface, and the first connecting hole 135 is connected to the arc surface.

[0077] See also Figure 2 and Figure 3 According to some embodiments of the present application, a limiting groove 132 may be provided in the middle portion of the rotating member 13, and at least a portion of the first end of the follower 14 in the second direction is located in the limiting groove 132 and is rotatably connected to the second end of the rotating member 13.

[0078] A limiting groove 132 is provided in the middle of the rotating member 13. By allowing at least a portion of the first end of the follower 14 to extend into the limiting groove 132, a certain restraining effect is exerted on the first end of the follower 14, ensuring the accuracy of its motion trajectory and avoiding unnecessary vibration or deviation.

[0079] The rotating member 13 further includes two rotating shafts 133 respectively arranged on both sides of the limiting groove 132. The two rotating shafts 133 are coaxially arranged and rotatably mounted on the base 11 through bearings 142 so that the rotating member 13 can rotate around the rotating shafts 133.

[0080] Furthermore, two hooks 134 are provided on both sides of the limiting groove 132, and the two hooks 134 are respectively connected to the two rotating shafts 133. The movable shaft 143 passes through the first end of the follower 14, so that the two ends of the movable shaft 143 are respectively fixedly connected to the two hooks 134, thereby improving the stability of the connection of the movable shaft 143, and the two hooks 134 can provide more stable force conduction performance, thereby improving the accuracy of the test.

[0081] See also Figure 4 According to some embodiments of the present application, the tooth portion 131 is in point contact with the tooth surface to be tested of the tooth plate 2 .

[0082] Point contact can more accurately control the load distribution, simulate the complexity of tooth surface contact under actual working conditions, improve the accuracy of the test, and is closer to the tooth surface contact in actual applications, which can more realistically reflect the fatigue behavior of the tooth plate 2 during the stress process.

[0083] See also Figure 1 and Figure 2 According to some embodiments of the present application, the tooth plate fatigue testing device 1 may further include a mating component 17, which is arranged on the side of the tooth plate 2 away from the tooth surface to be tested and engages with the non-test tooth surface of the tooth plate 2 to make the tooth plate 2 move along the first direction.

[0084] It should be noted that both surfaces of the tooth plate 2 are provided with toothed surfaces. The provision of a mating assembly 17 for engagement with the non-test toothed surfaces allows for more accurate control of the movement direction and speed of the tooth plate 2, ensuring stability and controllability during the test. Furthermore, by engaging with the non-test toothed surfaces, the movement of the tooth plate 2 in actual application can be more realistically simulated, improving the accuracy and reliability of the test.

[0085] The matching component 17 may be a component that matches with the tooth plate 2 under actual working conditions.

[0086] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0087] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0088] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0089] In the description of this application, “plurality” means two or more.

[0090] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0091] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0092] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, 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 any one or more embodiments or examples.

[0093] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A tooth plate fatigue testing device, characterized in that: include: abutment; a driving member, mounted on the base and used for being dynamically coupled to the tooth plate to drive the tooth plate to move along a first direction; a rotating member rotatably mounted on the base, wherein a first end of the rotating member is provided with a plurality of teeth for engaging with the tooth surface to be tested of the tooth plate, the plurality of teeth being located on a same circle with the rotation axis of the rotating member as the center, and the plurality of teeth being rotatable around the rotation axis under the drive of the tooth plate; a driven member rotatably connected to the second end of the rotating member, wherein the connection between the driven member and the rotating member is offset from the rotation axis, and the driven member moves along a second direction under the drive of the rotating member, and the first direction and the second direction are arranged at an angle; A sensor is mounted on the base and is used to detect the motion state of the driven member.

2. The tooth plate fatigue testing device according to claim 1, characterized in that: The first end of the driven member in the second direction is connected to the second end of the rotating member; A guide groove is provided on the base, the second end of the follower in the second direction is slidably disposed in the guide groove, and the sensor is installed in the guide groove.

3. The tooth plate fatigue testing device according to claim 2, characterized in that: The sensor comprises a pressure sensor. The second end of the follower is provided with an extension portion extending laterally thereof. The pressure sensor is provided on a side of the extension portion facing the first end of the follower.

4. The tooth plate fatigue testing device according to claim 2, characterized in that: The sensor includes a displacement sensor, which is arranged in the guide groove and located on a side of the second end of the follower away from the first end of the follower, and the displacement sensor abuts against the second end of the follower.

5. The tooth plate fatigue testing device according to claim 1, characterized in that: A hook is provided at the second end of the rotating member, and a movably arranged movable shaft is provided at the first end of the driven member. The axis of the movable shaft is parallel to the rotating axis, and the movable shaft is fixedly connected to the hook.

6. The tooth plate fatigue testing device according to claim 5, characterized in that: A slide groove is provided in the first end of the driven member, a bearing is slidably provided in the slide groove, and the movable shaft is connected to the inner ring of the bearing; Wherein, the extending direction of the sliding groove is set at an angle to the second direction.

7. The tooth plate fatigue testing device according to claim 5, characterized in that: The hook portion is provided with a first connecting hole, the movable shaft is provided with a second connecting hole, and the movable shaft is fixedly connected to the hook portion via a connecting piece passing through the second connecting hole and the first connecting hole.

8. The tooth plate fatigue testing device according to claim 6, characterized in that: A limiting groove is provided in the middle of the rotating member, and at least a portion of the first end of the driven member in the second direction is located in the limiting groove and is rotatably connected to the second end of the rotating member.

9. The tooth plate fatigue testing device according to any one of claims 1 to 8, characterized in that: The tooth portion is in point contact with the tooth surface to be tested of the tooth plate.

10. The tooth plate fatigue testing device according to any one of claims 1 to 8, characterized in that: It also includes a matching component for being arranged on a side of the tooth plate away from the tooth surface to be tested and engaging with the non-test tooth surface of the tooth plate to move the tooth plate along the first direction.

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