A shoe roll-over prevention performance test device

Abstract

The application discloses a shoe anti-rollover performance test device, which comprises a simulation foot device, a ground-like device and a control and data acquisition module. The simulation foot device comprises a simulation leg model and a simulation foot model. The simulation leg model simulates the knee joint action when the leg is stepped on and lifted. The simulation foot model is worn on the shoe to simulate the ankle joint action during the standing or lateral stretch action and lifting process. The ground-like device is provided with a stepping platform mechanism and a lifting mechanism. The stepping platform mechanism is provided with a test platform. The test platform is provided with a stepping plane simulating the simulation foot model, which bears the stepping force of the simulation foot model during the lateral stretch action. The lifting mechanism controls the stepping platform mechanism to move along the vertical direction so that the shoe sole of the simulation foot model can be in close contact with the test platform. The control and data acquisition module is used for collecting and analyzing the test data. The shoe anti-rollover performance test device can simulate the landing angle, impact force and action time between different legs, feet and ground, and evaluate the overall anti-rollover performance difference of the shoe under different motion intensities.

Description

Technical Field

[0001] This invention relates to the field of footwear performance testing equipment, specifically to a footwear anti-rollover performance testing device. Background Technology

[0002] When humans perform various foot movements such as walking, running, and mountain climbing, they go through processes like heel strike, full-foot support, and forefoot push-off. The rotation and swing of the ankle joint are particularly crucial in these movements, especially noticeable when running on curves. However, when these movements are excessive, exceeding the body's control and the shoe's stability and protection capabilities, the foot may suffer injuries such as sprains. Overall shoe rollover protection refers to the shoe's ability to effectively prevent the foot from rolling inwards or outwards during movements such as foot strike, change of direction, and sudden stops, thereby reducing the risk of ankle sprains or strains. This performance is essential for footwear products, but currently, there is a lack of testing equipment on the market to directly measure overall shoe rollover protection. Existing evaluation methods mostly rely on human trials, where test subjects perform a series of fixed movements, and then a visual perception measurement system is used to evaluate the differences in rollover protection performance between different shoes. However, this method has many limitations. First, it cannot accurately simulate the actual performance of shoes under various complex movement conditions; second, the results of human trials are greatly affected by individual differences among test subjects, making it difficult to guarantee the objectivity and consistency of the evaluation results; finally, this method requires a lot of time and manpower, resulting in high costs. The industry also lacks effective means to evaluate the anti-rollover performance of shoes through physical and mechanical methods. Although the performance of local areas of the shoe can be evaluated, this method is difficult to accurately reflect the overall anti-rollover performance of the shoe. While using human biomechanics is closer to actual movement conditions, the evaluation results are difficult to accurately replicate due to significant differences between individuals, and the requirements for human test subjects are high, making it unsuitable for large-scale application. Therefore, in order to systematically study the differences in anti-rollover performance in different types of sports, and to develop scientific and effective evaluation methods and corresponding product functional standards to guide new product development, there is an urgent need for a testing device that can simulate real movement conditions and accurately measure the overall anti-rollover performance of shoes. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a shoe anti-rollover performance testing device. This device can simulate different landing angles, impact forces and action times between the leg, foot and the ground. Through these different force tests, the overall anti-rollover performance differences of shoes under different exercise intensities can be evaluated.

[0004] To achieve the above objectives, the various embodiments of the present invention employ the following technical solutions, but are not limited to the following solutions:

[0005] The first technical solution relates to a shoe anti-rollover performance testing device, comprising: a simulated foot device, which includes a simulated foot mold with a simulated ankle joint mechanism and a simulated leg mold with a simulated leg mechanism, the simulated leg mold being connected to the simulated foot mold, the simulated leg mold being adapted to simulate the knee joint movement when the leg is stepping and lifting, and the simulated foot mold being adapted to wear shoes to simulate the ankle joint movement of the foot during standing or lateral extension and lifting; a ground-like device, which is provided with a stepping platform mechanism and a lifting mechanism, the stepping platform mechanism being fixedly connected to the lifting mechanism; the stepping platform mechanism includes a test platform, the test platform being installed below the simulated foot mold, which has a stepping surface for simulating the simulated foot mold standing, the stepping surface bearing the stepping force of the simulated foot mold performing lateral extension; the lifting mechanism controlling the stepping platform mechanism to move vertically so that the sole of the simulated foot mold can make close contact with the stepping surface; and a control and data acquisition module, which is used for data acquisition, processing, display, and test parameter setting of the lateral extension movement of the foot.

[0006] The second technical solution is based on the first technical solution, wherein the simulated leg mechanism includes a first control component and a swing angle component. The first control component controls the simulated leg model to simulate the movement states of the leg standing, lifting, and lateral extension. The swing angle component is installed at the lower end of the simulated leg model near the simulated foot model to simulate the bending and straightening activities of the human leg knee joint.

[0007] The third technical solution is based on the second technical solution. In this solution, the first control component includes an electric cylinder, a servo motor, and a harmonic reducer. The electric cylinder is connected to the simulated leg mold and pushes or pulls the simulated leg mold to simulate the action of standing or raising the leg. The servo motor and harmonic reducer control the simulated leg mold to simulate the dynamic behavior of the leg during standing and rapid lateral extension.

[0008] The fourth technical solution is based on the second technical solution, wherein the simulated ankle joint mechanism includes a screw with a timing belt and an encoder. The screw is installed at the ankle joint of the simulated foot model to simulate the movement of the human leg ankle joint. The encoder is connected to the screw through the timing belt to measure and record the angle of the simulated foot model rolling over during the test in real time.

[0009] The fifth technical solution is based on the first technical solution, wherein the stepping platform mechanism includes a sensor, the sensor sensing and recording the magnitude of the stepping force when the simulated foot mold performs a lateral extension action; the sensor is installed below the test platform; the test platform is adapted to move horizontally and perpendicularly to the horizontal to ensure that the sensor is always in the center of the shoe when testing shoes of different sizes and angles.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the sensor is a force sensor, which can be a single-axis or a three-axis type.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the stepping platform mechanism includes a second control component, which drives and controls the test platform to move left and right in the horizontal direction and to move in a direction perpendicular to the horizontal direction.

[0012] The eighth technical solution is based on the seventh technical solution, wherein the second control component includes a T-shaped lead screw, a worm gear reducer and a stepper motor.

[0013] The ninth technical solution is based on the first technical solution, wherein the lifting mechanism includes a third control component, a guide rod and a lifting platform. The guide rod is perpendicular to the lifting platform and fixedly connected to the lifting platform. The stepping platform mechanism is fixedly connected to the lifting platform. The third drive component drives the guide rod to move in the vertical direction, thereby driving the lifting platform and the stepping platform mechanism fixed thereon to move in the vertical direction, so that the sole of the simulated foot mold can make close contact with the test platform.

[0014] The tenth technical solution is based on the ninth technical solution, wherein the third control component includes a third motor, a third synchronous pulley, a third synchronous belt and a third lead screw, the third motor and the third synchronous pulley are connected to the shaft of the third lead screw through the third synchronous belt, and the guide rod is movably connected to the third lead screw.

[0015] As can be seen from the above description of the various embodiments of the present invention, compared with the prior art, the various embodiments of the present invention have the following beneficial effects:

[0016] In the first technical solution and related embodiments, the movements during actual sports activities are realistically simulated mechanically, and the performance of the shoes is evaluated by measuring the changes in parameters of the foot and shoe during the impact process. This allows for a more accurate understanding of the shoe's performance under different sports conditions, thus providing consumers with more suitable sports shoe choices. The way the human body lands during exercise varies depending on the type of sport. For example, when running, the heel usually lands first, while the forefoot is responsible for pushing off; when playing ball, rapid lateral changes of direction are required. During these movements, the magnitude and time distribution of force on the foot differ. To accurately evaluate the shoe's performance, especially its anti-rollover performance, this embodiment uses a simulated foot device to realistically simulate the foot's movement during standing or lateral pushing-off movements. In particular, a simulated foot model simulating the ankle joint mechanism was subjected to a series of impact compression tests while wearing the shoes, simulating the ankle joint's rotation angle and movement during actual sports activities, thereby more accurately reflecting the shoe's performance in real sports scenarios. The ground-like device, combining a stepping platform mechanism and a lifting mechanism, not only simulates a real walking surface but also ensures close contact between the sole of the simulated foot model and the testing platform by controlling its lifting. During testing, different parameters such as leg angle, foot angle, impact force, and impact time were set through the control and data acquisition module to simulate impact conditions in real sports scenarios. These tests allow for the acquisition of key data such as the ankle joint's rotation angle and the magnitude of upper deformation. The anti-rollover performance of the shoe is evaluated by measuring these parameters during real-world movement.

[0017] In the second technical solution and related embodiments, the simulated leg mechanism achieves precise control of the simulated leg model by integrating a first control component and a swing angle component. The first control component can simulate various movement states of the leg, such as standing, lifting, and lateral extension, providing rich simulation scenarios for testing the anti-rollover performance of the shoe. Simultaneously, the design of the swing angle component allows the simulated leg model to naturally simulate the flexion and extension of the human knee joint when the swing angle component is released, further enhancing the realism of the simulation. This design not only improves the simulation accuracy of the testing equipment, making the test results closer to actual wearing conditions, but also enables a comprehensive and accurate evaluation of the anti-rollover performance of the shoe.

[0018] In the third technical solution and related embodiments, the first control component achieves more precise and realistic leg movement simulation through components such as an electric cylinder, a servo motor, a harmonic reducer, and a pressure plate. Specifically, the pushing or pulling function of the electric cylinder can simulate the action of standing or lifting the leg, providing a simulation environment that is closer to the actual movement state for testing. The servo motor is responsible for realizing the complex actions of standing and rapid lateral extension of the legs, while the harmonic reducer is used to precisely adjust the tilt angle of the leg, ensuring that the simulated leg movements are more natural and accurate.

[0019] In the fourth technical solution and related embodiments, the simulated ankle joint mechanism, by introducing a screw with a synchronous belt and an encoder, achieves accurate simulation of the ankle joint activity of the simulated foot model and real-time measurement of the rollover angle. Specifically, the screw allows the simulated foot model to simulate the complex activities of the human leg and ankle joint during movement, including flexion, extension, and rollover, thus more realistically reproducing the actual movement state. The connection between the encoder and the synchronous belt ensures that the rollover angle of the simulated foot model can be measured and recorded accurately and in real-time during the testing process.

[0020] In the fifth technical solution and related embodiments, the stepping platform mechanism is equipped with sensors to sense and record the magnitude and direction of the stepping force or torque when the simulated foot mold performs a lateral push-off action. Firstly, the sensors can collect key data on the stepping force in real time and accurately during the test, providing strong data support for evaluating the shoe's anti-rollover performance. When the sensors are installed under the test platform, the test platform can move left and right horizontally and forward and backward perpendicular to the horizontal direction, ensuring that the sensors are always accurately aligned with the center of the shoe when testing shoes at different angles, thus improving the accuracy and reliability of the test.

[0021] In the sixth technical solution and related embodiments, by using a force sensor, the device can accurately measure the changes in force experienced by the shoe during the test. This helps us to comprehensively understand the stress on the shoe, thereby accurately assessing its anti-rollover performance. Both uniaxial and triaxial force sensors can provide reliable force data, strongly guaranteeing the accuracy of the test results. Uniaxial force sensors primarily focus on force changes in a single direction and are suitable for force testing in a specific direction. Triaxial force sensors, on the other hand, can simultaneously measure force changes in three different directions, providing more comprehensive force data. This allows the device to adapt to different testing needs and flexibly handle various testing scenarios.

[0022] In the seventh technical solution and related embodiments, the second control component can drive the test platform to move left and right in the horizontal direction, and move back and forth in the direction perpendicular to the horizontal direction, so as to ensure that when testing shoes at different angles, the sensor can always be accurately aligned with the center of the shoe.

[0023] In the eighth technical solution and related embodiments, the second control component, through a combination of a T-shaped lead screw, a worm gear reducer, and a stepper motor, achieves precise control of the test platform's left-right movement in the horizontal direction and its forward-backward movement in the direction perpendicular to the horizontal. To ensure that the sensors can accurately sense the force value, the test platform can move in two dimensions: left-right and forward-backward. First, through the coordinated work of the T-shaped lead screw and the stepper motor, the test platform can achieve precise and stable left-right or forward-backward movement. The introduction of the worm gear reducer further improves the stability and accuracy of the test platform during movement. The worm gear reducer can effectively reduce the speed of the stepper motor and increase the torque, making the test platform more stable during movement and reducing the impact of vibration or shaking on the test data. Specifically, a combination of two sets of T-shaped lead screws, worm gear reducers, and stepper motors is used. Left-right movement is achieved through a first T-shaped lead screw, a first worm gear reducer, and a first stepper motor. The first stepper motor drives the first worm gear reducer, which in turn drives the first T-shaped lead screw, causing the test platform to move left-right in the horizontal direction; forward-backward movement is achieved through a second T-shaped lead screw, a second worm gear reducer, and a second stepper motor. This mechanism also uses a second stepper motor to drive a second worm gear reducer, which in turn drives a second T-screw, allowing the testing platform to move back and forth in a direction perpendicular to the horizontal. This two-dimensional position adjustment ensures that the sensor is always centered on the shoe when testing shoes of different sizes and angles, thus obtaining the most accurate force data.

[0024] In the ninth technical solution and related embodiments, the lifting mechanism includes a guide rod connected to the test platform and a third control component, enhancing the stability and reliability of the lifting mechanism. The third drive component drives and controls the guide rod to move vertically up and down so that the sole of the simulated foot mold can make close contact with the test platform; the guide rod ensures the smooth movement of the test platform during the lifting process, effectively preventing swaying or deviation, thereby ensuring the accuracy of the test data. The guide rod not only supports the test platform but also distributes the reaction force generated between the sole and the test platform during the rollover experiment. During the rollover process, the sole applies a lateral force to the test platform, which is dispersed through the guide rod, thereby enhancing the structural stability and durability of the entire device.

[0025] In the tenth technical solution and related embodiments, the third control component includes a motor, a synchronous pulley, a synchronous belt, and a lead screw. The motor and synchronous pulley are connected by the synchronous belt, which drives the lead screw to rotate. The movable connection between the guide rod and the lead screw enables precise control of the guide rod. The motor, as a power source, transmits rotational power to the synchronous pulley via the synchronous belt, which then drives the lead screw to rotate. The rotational motion of the lead screw is converted into linear motion through the guide rod, thereby achieving precise displacement control of the guide rod. Since the guide rod is connected to the test platform, the test platform also rises and falls accordingly. This lifting mechanism ensures that the sole of the simulated foot mold is in close contact with the test platform, whether during stepping or release. This mechanical transmission method is characterized by high efficiency, stability, and high precision, ensuring the accuracy and reliability of the guide rod movement during testing. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a shoe anti-rollover performance testing device as an example.

[0028] Figure 2 This is a schematic diagram of the shoe-simulating foot device in Embodiment 1;

[0029] Figure 3 This is a schematic diagram of a ground device of the embodiment type;

[0030] Figure 4 This is a schematic diagram of the stepping platform mechanism in the ground device of the embodiment;

[0031] Figure 5 This is a schematic diagram of the lifting mechanism in the ground device of the embodiment.

[0032] Explanation of key figure labels:

[0033] 1. Simulated foot device; 2. Ground-like device; 3. Simulated foot mold; 4. Simulated leg mold; 5. Stepping platform mechanism; 6. Lifting mechanism; 7. Sensor; 8. Operating table; 9. Workstation; 10. Shoe last; 11. Electric cylinder; 12. Servo motor; 13. Harmonic reducer; 14. Swing angle component; 15. Screw; 16. Encoder; 17. Base; 18. Moving platform; 19. First linear guide rail; 20. Stepping surface; 21. First T-shaped lead screw; 22. First worm gear reducer; 23. First stepper motor; 24. Second T-shaped lead screw; 25. Second worm gear reducer; 26. Second stepper motor; 27. Second linear guide rail; 28. Guide rod; 29. ​​Lifting platform; 30. Third motor; 31. Third synchronous pulley; 32. Third synchronous belt; 33. Third lead screw. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0036] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying 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 limiting the specific scope of protection of this invention.

[0037] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0038] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0039] See Figures 1 to 5 ,like Figure 1 As shown, a shoe anti-rollover performance testing device includes a simulated foot device 1, a ground-like device 2, and a control and data acquisition module.

[0040] Example 1

[0041] Simulated foot device 1, such as Figure 2 As shown, it includes a simulated foot model 3 and a simulated leg model 4. The simulated leg model 4 is connected to the simulated foot model 3. The simulated leg model 4 is adapted to simulate the knee joint movement when the leg is stepping and lifting. The simulated foot model 3 is adapted to wear shoes to simulate the ankle joint movement during standing or lateral extension and lifting. The simulated foot device 1 can simulate the process of the simulated foot model wearing shoes performing rapid lateral stepping and subsequent lifting, thus realistically reproducing the mechanical performance in actual use scenarios. The simulated foot model 3 includes a simulated ankle joint mechanism and a shoe last 10. The shoe last 10 is detachably and rotatably connected to the simulated ankle joint mechanism, and different sizes of shoe lasts 10 can be replaced for simulation testing. The simulated leg model 4 includes a simulated leg mechanism and a simulated leg. The simulated leg is rotatably connected to the simulated leg mechanism.

[0042] The simulated leg mechanism includes a first control component and a swing angle component 14. The first control component controls the simulated leg mold 4 to simulate the movement states of the leg, such as standing, lifting, and lateral extension. The swing angle component 14 is installed at the lower end of the simulated leg mold 4 near the simulated foot mold 3 to simulate the bending and straightening of the knee joint. Specifically, the first control component includes an electric cylinder 11, a servo motor 12, and a harmonic reducer 13. The electric cylinder 11 is connected to the simulated leg mold 4 and pushes or pulls it to simulate the movement of the leg standing or lifting. The servo motor 12 and the harmonic reducer 13 control the simulated leg mold 4 to simulate the dynamic behavior of the leg during standing and rapid lateral extension. The swing angle component 14 is a pressure plate. In this embodiment, the simulated leg mechanism achieves precise control of the simulated leg mold 4 by integrating the first control component and the swing angle component 14. The first control component can simulate various movement states such as standing, lifting, and lateral extension, providing rich simulation scenarios for testing the anti-rollover performance of shoes. Meanwhile, the design of the swing angle component 14 allows the simulated leg model 4 to naturally simulate the bending and straightening of the knee joint when the swing angle component 14 is released, further enhancing the realism of the simulation. This design not only improves the simulation accuracy of the test equipment, making the test results closer to actual wearing conditions, but also enables a comprehensive and accurate evaluation of the anti-rollover performance of the shoes. The first control component, through components such as the electric cylinder 11, servo motor 12, harmonic reducer 13, and pressure plate, achieves more precise and realistic leg movement simulation. Specifically, the pushing or pulling function of the electric cylinder 11 can simulate the action of standing or lifting the leg, providing a simulation environment that is closer to the actual movement state for testing. The servo motor 12 is responsible for realizing the complex actions of standing and rapid lateral extension of the leg, while the harmonic reducer 13 is used to precisely adjust the tilt angle of the leg, ensuring that the simulated leg movements are more natural and accurate.

[0043] The simulated ankle joint mechanism includes a screw 15 with a timing belt and an encoder 16. The screw 15 is mounted on the ankle joint of the simulated foot mold 3 to simulate the movement of a human leg ankle joint. The encoder 16 is connected to the screw 15 via the timing belt to measure and record the rollover angle of the simulated foot mold 3 in real time during testing. By introducing the screw 15 with the timing belt and the encoder 16, the simulated ankle joint mechanism achieves accurate simulation of the ankle joint movement of the simulated foot mold 3 and real-time measurement of the rollover angle. Specifically, the screw 15 enables the simulated foot mold 3 to simulate the complex movements of the human leg ankle joint during movement, including flexion, extension, and rollover, thus more realistically reproducing the actual movement state. The connection between the encoder 16 and the timing belt ensures that the rollover angle of the simulated foot mold 3 can be measured and recorded in real time and accurately during testing.

[0044] Ground-type device 2, such as Figures 3 to 5 As shown, it includes a foot platform mechanism 5 and a lifting mechanism 6, with the foot platform mechanism 5 fixedly connected to the lifting mechanism 6. Figure 4 As shown, the stepping platform mechanism 5 includes a test platform, a sensor 7, a second control component, and a moving platform 18. The test platform is installed below the simulated foot mold 3. Specifically, the test platform includes a stepping surface 20 and a base 17, with the base 17 detachably connected to the stepping surface 20. The stepping surface 20 is used to simulate the plane on which the simulated foot mold 3 stands, and it bears the stepping force of the simulated foot mold 3 performing lateral extension movements.

[0045] Sensor 7 senses and records the magnitude of the stepping force when the simulated foot mold 3 performs a lateral push-off motion. Specifically, the stepping platform mechanism 5 is equipped with sensor 7 to sense and record the magnitude of the stepping force when the simulated foot mold 3 performs a lateral push-off motion. First, sensor 7 can collect key data on the stepping force in real time and accurately during the test, providing strong data support for evaluating the anti-rollover performance of the shoe. Sensor 7 is installed below the test platform, located between the stepping plane 20 and the base 17. Sensor 7 is a force sensor, which can be single-axis or tri-axis. The test platform is adapted to move left and right in the horizontal direction and forward and backward in the perpendicular horizontal direction to ensure that sensor 7 is always in the center of the shoe when testing shoes of different sizes and angles. When sensor 7 is installed below the test platform, the force sensor 7 can accurately measure the stepping force on the shoe during the test. This is crucial for evaluating the anti-rollover performance of the shoe, because accurate measurement of the stepping force can directly reflect the stability of the shoe under stress. Secondly, the testing platform can move horizontally left and right, and also forward and backward perpendicular to the horizontal, ensuring that sensor 7 is always accurately aligned with the center of the shoe when testing shoes at different angles, thus improving the accuracy and reliability of the test. In this embodiment, by using a force sensor, the device can accurately measure the changes in force experienced by the shoe during the test. This helps us to fully understand the stress on the shoe, thereby accurately assessing its anti-rollover performance. Both single-axis and triaxial force sensors can provide reliable force data, providing strong assurance for the accuracy of the test results. Single-axis force sensors mainly focus on force changes in a single direction and are suitable for force testing in a specific direction. Triaxial force sensors, on the other hand, can simultaneously measure force changes in three different directions, providing more comprehensive force data. This allows the device to adapt to different testing needs and flexibly respond to various testing scenarios.

[0046] The second control component is responsible for driving and controlling the test platform's horizontal left-right movement and its forward-backward movement perpendicular to the horizontal. This component includes a T-screw, a worm gear reducer, a stepper motor, and a linear guide. Through the precise coordination of these components, the second control component achieves accurate movement control of the test platform in two dimensions. To meet the testing requirements of shoes of different sizes, the test platform needs to be able to move freely in both left-right and forward-backward directions. This functionality is achieved primarily through the coordinated operation of the T-screw and the stepper motor. Together, they ensure the accuracy and stability of the test platform during movement. Simultaneously, the application of the worm gear reducer further enhances the stability and accuracy of the movement process. It effectively reduces the stepper motor's speed and increases torque, making the test platform move more smoothly and thus reducing the impact of vibration or shaking on the test data. In summary, the second control component, through precise mechanical design and electrical control, provides a reliable movement mechanism for the test platform, ensuring accuracy and reliability during the testing process.

[0047] The mobile platform 18 is a flat structure used to support the test platform and enable its multi-dimensional movement. To achieve movement of the test platform in two different dimensions, two identical sets of second control components are used: a first set of control components and a second set of control components. The first set of control components includes a first T-shaped lead screw 21, a first worm gear reducer 22, a first stepper motor 23, and two first linear guide rails 19. This set of components is responsible for driving the test platform to move left and right in the horizontal direction. The base 17 of the test platform is firmly connected to the sliders of the two first linear guide rails 19, ensuring that the platform can move stably along the guide rails. The second set of control components includes a second T-shaped lead screw 24, a second worm gear reducer 25, a second stepper motor 26, and two second linear guide rails 27. The main task of this set of components is to drive the mobile platform 18 to move back and forth in a direction perpendicular to the horizontal direction. The mobile platform 18 is also fixedly connected to the sliders of the two second linear guide rails 27 to ensure its stability and accuracy during movement. It is worth noting that the first set of control components and the test platform are both mounted on top of the mobile platform 18. With this setup, the testing platform can not only move horizontally, but also move forward and backward in the direction perpendicular to the horizontal by moving the moving platform 18, thereby meeting multi-dimensional testing needs.

[0048] The first set of control components drives the first worm gear reducer 22 via the first stepper motor 23, which in turn drives the first T-screw 21, enabling the test platform to move horizontally left and right along the first linear guide rail 19. Forward and backward movement of the test platform, the cooperation of the second T-screw 24, the second worm gear reducer 25, and the second stepper motor 26 is required. The second set of control components is responsible for driving and controlling the moving platform 18 to move forward and backward along the second linear guide rail 27 in a direction perpendicular to the horizontal. This mechanism also uses the second stepper motor 26 to drive the second worm gear reducer 25, which in turn drives the second T-screw 24, ensuring that the moving platform 18 can move stably forward and backward in a direction perpendicular to the horizontal, thereby enabling the test platform to move forward and backward in the corresponding direction.

[0049] Lifting mechanism 6, such as Figure 5As shown, it includes a third control component, a guide rod 28, and a lifting platform 29. The lifting mechanism 6 controls the stepping platform mechanism 5 to move vertically up and down so that the sole of the simulated foot mold 3 can make close contact with the test platform. The guide rod 28 is perpendicular to the lifting platform 29 and fixed to the lifting platform 29. The stepping platform mechanism 5 is fixed to the lifting platform 29. The third drive component drives and controls the guide rod 28 to move vertically up and down so that the sole of the simulated foot mold 3 can make close contact with the test platform. The lifting mechanism 6 includes the guide rod 28 connected to the test platform and the third control component, which enhances the stability and reliability of the lifting mechanism 6. The third drive component drives the guide rod 28 to move vertically, thereby driving the lifting platform 29 and the stepping platform mechanism 5 fixed on it to move vertically, so that the sole of the simulated foot mold 3 can make close contact with the test platform. The guide rod 28 can ensure the smooth movement of the test platform during the lifting process, effectively preventing shaking or deviation, thereby ensuring the accuracy of the test data. The guide rod 28 not only supports the test platform but also distributes the reaction force generated between the shoe sole and the test platform during the rollover experiment. During the rollover, the shoe sole exerts a lateral force on the test platform, which is dispersed through the guide rod 28, thereby enhancing the structural stability and durability of the entire device. Specifically, the third control component includes a third motor 30, a third synchronous pulley 31, a third synchronous belt 32, and a third lead screw 33. The third motor 30 and the third synchronous pulley 31 are connected to the shaft of the third lead screw 33 via the third synchronous belt 32, and the guide rod 28 is movably connected to the third lead screw 33. In this embodiment, the third control component connects the third motor 30 and the third synchronous pulley 31 via the synchronous belt, thereby driving the third lead screw 33 to rotate. The movable connection between the guide rod 28 and the third lead screw 33 enables precise control of the guide rod 28. The third motor 30, as a power source, transmits rotational power to the third synchronous pulley 31 via the synchronous belt, and the third synchronous pulley 31 then drives the third lead screw 33 to rotate. The rotational motion of the third lead screw 33 is converted into linear motion through the guide rod 28, thereby achieving precise displacement control of the guide rod 28. Since the guide rod 28 is connected to the test platform, the test platform also rises and falls accordingly. This lifting mechanism ensures that the sole of the simulated foot mold 3 is in close contact with the test platform, whether during stepping or releasing. This mechanical transmission method is efficient, stable, and highly precise, ensuring the accuracy and reliability of the guide rod 28's movement during testing.

[0050] The control and data acquisition module is used for data acquisition, processing, display, and setting of test parameters for the lateral extension movement of the foot. Specifically, the software data acquisition module is equipped with a complete software system capable of accurately setting the loading time, loading force, downward displacement, unloading time, and number of cycles during the lateral extension movement of the foot. Simultaneously, the software can record and display changes in ankle joint angle and corresponding time and angle data in real time. During the test, users can intuitively observe the changes in relevant curves and data such as time, force, displacement, and angle, thereby comprehensively analyzing the anti-rollover performance of the shoe.

[0051] The control and data acquisition module includes an operator console 8 and a workstation 9. For example... Figure 1 As shown, the control panel 8 and workstation 9 are equipment used for operation and work. Among them, the ground-like device 2 is installed on the control panel 8, and the workstation 9 is a computer and a monitor.

[0052] The likelihood of foot rollover under different exercise conditions can be broadly categorized into three types. The first is rollover occurring upon heel strike; the second is rollover during forefoot extension; and the third is rollover that may occur during vigorous lateral extension movements, i.e., lateral cutting. These rollover risks under different exercise conditions need to be fully considered and simulated in shoe anti-rollover performance testing equipment to ensure the accuracy and comprehensiveness of the test results. This embodiment realistically simulates the movements during actual exercise using mechanical methods and evaluates shoe performance by measuring the changes in parameters of the foot and shoe during impact. This allows for a more accurate understanding of shoe performance under different exercise conditions, thus providing consumers with more suitable athletic shoe choices. The way the human body lands during exercise varies depending on the type of activity. For example, in running, the heel usually lands first, while the forefoot is responsible for extension; in ball games, rapid lateral changes of direction are required. During these movements, the magnitude and time distribution of force on the foot differ. To accurately evaluate the performance of the shoes, especially their anti-rollover performance, this embodiment uses a simulated foot device 1 to realistically simulate the movement of the foot during standing or lateral extension movements. In particular, a simulated foot model 3, simulating the ankle joint mechanism, was subjected to a series of impact compression tests while wearing the shoes, simulating the ankle joint's rotation angle and movement during actual exercise, thus more accurately reflecting the shoe's performance in real-world sports scenarios. The ground-like device 2, combined with the stepping platform mechanism 5 and the lifting mechanism 6, not only simulates the real stepping surface 20 but also ensures close contact between the sole of the simulated foot model 3 and the testing platform by controlling the lifting and lowering of the testing platform. During the tests, different parameters such as leg angle, foot angle, impact force value, and impact time were set through the control and data acquisition module to simulate impact conditions in real-world sports scenarios. Through these tests, key data such as the rotation angle of the foot and ankle joint and the magnitude of the deformation of the shoe upper can be collected. The anti-rollover performance of the shoes is evaluated by measuring these parameter results during real-world sports activities.

[0053] In other embodiments, for the simulated foot device 1, one or more alternative solutions of different mechanical devices such as motors, hydraulic systems or robotic arms can be used to achieve the technical effect of the simulated foot device 1.

[0054] Example 2

[0055] A hydraulic device is used to simulate the foot device 1. Due to its high power density and fast response, the hydraulic device can also be used as an alternative to simulate leg and foot movements.

[0056] Side rollover force simulation: A hydraulic cylinder is used instead of electric cylinder 11, and the side rollover force is simulated by controlling the pressure and flow of the hydraulic system.

[0057] Standing and lowering body simulation: The functions of the servo motor 12 and the reducer can be achieved by a hydraulic motor and corresponding hydraulic control valves. By precisely controlling the speed and direction of the hydraulic motor, as well as the opening degree of the hydraulic control valves, the mechanical characteristics of human legs in different postures can be simulated.

[0058] Knee and ankle joint movement simulation: A linkage mechanism driven by a hydraulic cylinder or hydraulic motor is used to simulate the function of the pressure plate and screw 15.

[0059] Side rollover angle feedback: The side rollover angle information can be monitored and fed back in real time using the sensor 7 built into the hydraulic cylinder or hydraulic motor or the independent rotary encoder 16.

[0060] Example 3

[0061] Robotic arm alternatives: Robotic arms are highly flexible and programmable, and can also be used as an alternative to simulate leg and foot movements.

[0062] Overall motion simulation: A multi-joint robotic arm is used to simulate the movements of the entire leg and foot. By programming and controlling the movement trajectory and speed of each joint of the robotic arm, complex movements such as standing on one leg, lowering the body, and rolling to the side can be achieved.

[0063] Lateral tilting force simulation: A corresponding actuator can be installed at the end of the robotic arm to simulate the lateral tilting force. The actuator can be designed according to experimental requirements to achieve the desired mechanical properties.

[0064] Knee and ankle joint motion simulation: The robotic arm's joints can simulate the movements of the knee and ankle joints. By precisely controlling the rotation angle and speed of the joints, joint movements in different postures can be simulated.

[0065] Side-flip angle feedback: Angle sensors 7 are installed at the corresponding joints of the robotic arm to monitor and provide feedback on the side-flip angle in real time, so as to ensure the accuracy and repeatability of the experiment.

[0066] It should be noted that the above alternatives are only one possible implementation method. The specific solution design needs to be comprehensively considered and optimized based on the specific needs and conditions of the experiment. At the same time, in practical applications, factors such as the reliability, cost, and ease of maintenance of the solution also need to be considered.

[0067] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A device for testing the roll-over resistance of a shoe, characterized in that Comprise: An artificial foot device (1) comprising an artificial foot model (3) with an artificial ankle mechanism and an artificial leg model (4) with an artificial leg mechanism, the artificial leg model (4) is connected to the artificial foot model (3), the artificial leg model (4) is adapted to simulate the action of the knee joint when the leg is stepping and lifting, the artificial foot model (3) is adapted to wear shoes to simulate the action of the ankle joint during standing or lateral stretch action and lifting; The artificial leg mechanism comprises a first control assembly and a swing angle piece (14), the first control assembly controls the artificial leg model (4) to simulate the standing, lifting and lateral stretch of the leg; the swing angle piece (14) is installed on the lower end of the artificial leg model (4) close to the artificial foot model (3) to simulate the bending and straightening of the knee joint of the human leg; The first control assembly comprises an electric cylinder (11), a servo motor (12) and a harmonic reducer (13), the electric cylinder (11) is connected to the artificial leg model (4), and pushes or pulls the artificial leg model (4) to simulate the action of the leg standing or lifting, the servo motor (12) and the harmonic reducer (13) control the dynamic behavior of the artificial leg model (4) during standing and lateral rapid stretch; The artificial ankle mechanism comprises a screw rod (15) with a synchronous belt and an encoder (16), the screw rod (15) is installed at the ankle joint of the artificial foot model (3) to simulate the ankle joint movement of the human leg, and the encoder (16) is connected with the screw rod (15) through the synchronous belt to measure and record the angle of the artificial foot model (3) during the test; A class ground device (2) is provided with a stepping platform mechanism (5) and a lifting mechanism (6), the stepping platform mechanism (5) is fixedly connected to the lifting mechanism (6); the stepping platform mechanism (5) comprises a test platform located below the artificial foot model (3), the test platform is provided with a stepping plane (20) for simulating the standing of the artificial foot model (3), the stepping plane (20) bears the stepping force of the artificial foot model (3) during lateral stretch action; the lifting mechanism (6) controls the stepping platform mechanism (5) to move along the vertical direction so that the sole of the artificial foot model (3) can be in close contact with the stepping plane (20); the stepping platform mechanism (5) further comprises a second control assembly, the second control assembly drives and controls the test platform to move along the horizontal direction and the direction perpendicular to the horizontal direction; And A control and data acquisition module for data acquisition, processing, display and test parameter setting of lateral stretch action of the foot.

2. The device for testing the roll-over resistance of a shoe according to claim 1, wherein The stepping platform mechanism (5) comprises a sensor (7) for sensing and recording the value of the stepping force when the artificial foot model (3) performs lateral stretch action; the sensor (7) is installed below the test platform; the test platform is adapted to move along the horizontal direction and the direction perpendicular to the horizontal direction to ensure that the sensor (7) is always in the middle position of the shoe during the test of different sizes and angles of the shoe.

3. A device for testing the roll-over resistance of a shoe according to claim 2, characterized in that The sensor (7) is a force sensor, which can be single-axis or three-axis type.

4. A device for testing the roll-over resistance of a shoe according to claim 3, characterized in that The second control assembly comprises a T-shaped screw rod, a turbine speed reducer and a stepping motor.

5. The device for testing the roll-over resistance of shoes according to claim 1, wherein The lifting mechanism (6) comprises a third control assembly, a guide rod (28) and a lifting platform (29), the guide rod (28) is perpendicular to the lifting platform (29) and is fixedly connected with the lifting platform (29), the stepping platform mechanism (5) is fixedly connected on the lifting platform (29), the third control assembly drives the guide rod (28) to move in the vertical direction, and then drives the lifting platform (29) and the stepping platform mechanism (5) fixedly connected with the lifting platform (29) to move in the vertical direction, so that the sole of the simulation foot model (3) can be in close contact with the test platform.

6. A device for testing the roll-over resistance of a shoe according to claim 5, characterized in that The third control assembly comprises a third motor (30), a third synchronous wheel (31), a third synchronous belt (32) and a third screw rod (33), the third motor (30) and the third synchronous wheel (31) are connected with the shaft of the third screw rod (33) through the third synchronous belt (32), and the guide rod (28) is movably connected with the third screw rod (33).

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