Sneaker sole bearing capacity testing device

Abstract

A sports shoe sole bearing capacity testing device comprises a base, an extrusion mechanism, a crank rocker mechanism, a resilience force testing mechanism, a friction force testing mechanism and a central control unit. The base is provided with a horizontal reference plane; the extrusion mechanism comprises a translation fixed sliding table, a vertical pressing assembly and a horizontal pushing assembly; the crank rocker mechanism is arranged on the driving side of the sliding table, consists of a servo motor, a turntable and a driving rod, and can drive the sliding table to translate; the resilience force testing mechanism is located on the opposite side of the moving end point of the sliding table and comprises a horizontal moving platform, an adjusting lead screw and a horizontal pressure tester coaxial with the moving direction of the sliding table. The friction force testing mechanism is arranged below the extrusion mechanism and is composed of a replaceable simulation test board, a movable guide rail and a friction force tester, and the guide rail is rigidly connected with the base; the central control unit is in signal connection with the servo motor and the two types of pressure testers, a programmable multi-test-mode switching module is arranged in the central control unit, and switching of multiple test modes can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of shoe sole testing equipment, and in particular to a device for testing the durability of sports shoe soles. Background Technology

[0002] The construction of shoe soles is quite complex, broadly speaking, encompassing all materials that make up the bottom, including the outsole, midsole, and heel. After production, shoe soles need to maintain abrasion resistance, impact resistance, and slip resistance under high-intensity, multi-directional dynamic loads. Traditional shoe sole quality testing techniques have the following limitations:

[0003] 1. Single Testing Mode: Existing equipment mostly uses independent testing units. For example, vertical pressure testing machines only assess static bearing capacity, and friction testing benches only measure unidirectional sliding resistance, failing to simulate the combined stresses of compression, shear, and rebound simultaneously experienced by the sole during exercise. 2. Static Simulation Distortion: Conventional fatigue testing machines test sole durability through fixed-frequency mechanical bending, but ignore the dynamic changes in impact force when the foot strikes the ground during actual exercise (e.g., the staged load difference between forefoot strike and heel lift during running). 3. Data Fragmentation: The pressure, friction coefficient, and deformation recovery data output by different testing devices are independent, lacking synchronous correlation analysis, resulting in an inability to accurately assess the overall performance of the sole (e.g., the impact of rebound decay on slip resistance). 4. Insufficient Ground Adaptability: Traditional friction testing uses fixed material panels, unable to quickly switch between different road surface textures (e.g., track texture, wetland brick texture), leading to discrepancies between test results and actual usage environments. Therefore, there is an urgent need for an integrated testing device that can simultaneously simulate dynamic compression, multi-directional friction, and rebound response to solve the problem of quality assessment of athletic shoe soles under complex working conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a device for testing the durability of sports shoe soles.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a device for testing the durability of sports shoe soles, comprising: a base having a horizontal reference plane; a compression mechanism including a translational fixed slide parallel to the base, a vertical pressing component fixed to a first side of the translational fixed slide, and a horizontal pushing component fixed to a second side of the translational fixed slide; a crank-rocker mechanism located on the driving side of the translational fixed slide of the compression mechanism, including a servo motor, a turntable coaxially fixed to the output shaft of the servo motor, and a drive rod with its two ends respectively hinged to the eccentric position of the turntable and the driving end of the translational fixed slide; and a rebound force testing mechanism located on the opposite side of the endpoint of the translational fixed slide's movement trajectory. The system includes a horizontal moving platform, a horizontal adjusting screw threaded to the horizontal moving platform, and a horizontal pressure tester penetrating the middle of the horizontal moving platform, the axis of which is parallel to the direction of movement of the translational fixed slide; a friction testing mechanism located below the extrusion mechanism, including a replaceable simulation test plate, a movable guide rail slidably connected to the bottom of the simulation test plate, and a friction tester fixed to the side wall of the simulation test plate, the movable guide rail being rigidly connected to the base; and a central control unit connected to the servo motor, the horizontal pressure tester, and the friction tester, and having a built-in programmable multi-test mode switching module.

[0007] As a preferred embodiment of this utility model, the vertical pressing assembly includes: a vertical guide rail rigidly connected to the side wall of the translational fixed slide; a shoe sole fixing clamp slidably mounted on the vertical guide rail; a ball screw driving the shoe sole fixing clamp, wherein the screw nut is fixedly connected to the shoe sole fixing clamp, and a stepper motor with a torque limiter is connected to the end of the screw.

[0008] As a preferred embodiment of the present invention, the horizontal pushing assembly includes: an L-shaped base fixed to the side wall of the translational fixed slide, and its vertical arm is provided with a shoe sole clamping platform.

[0009] As a preferred embodiment of this utility model, the turntable of the crank-rocker mechanism is provided with a sliding groove, and the hinge point between the drive rod and the turntable is slidably hinged to the sliding groove by a slider.

[0010] As a preferred technical solution of this utility model, the surface of the simulation test board is provided with a removable textured coating, including at least one of wave pattern, particle pattern and mesh pattern, and the coating material is rubber, silicone or polyurethane.

[0011] As a preferred embodiment of the present invention, the horizontal pressure tester includes: a pressure probe penetrating a horizontal moving platform, the contact end of which is a circular elastic head; and a strain gauge sensor group disposed at the root of the pressure probe.

[0012] As a preferred technical solution of this utility model, the multi-test mode switching module of the central control unit includes: a motion parameter configuration submodule, which sets the speed and number of reciprocating motions of the servo motor; and a data fusion analysis submodule, which synchronously records the peak rebound force of the horizontal pressure tester, the dynamic friction coefficient curve of the friction tester, and the downward displacement of the stepper motor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The crank-rocker mechanism drives the translation slide to generate periodic horizontal compression, which, together with the ball screw of the vertical pressing component, applies linear pressure to reproduce the compression-shear coupling stress of the sports shoe sole during sudden stops and turns; the servo motor speed adjustment function supports setting different impact frequencies (such as simulating running cadence changes) to meet the testing needs of specialized sports shoes such as basketball and running shoes.

[0015] 2. By combining the replacement of textured overlays (such as wave patterns to simulate slippery surfaces and particle patterns to mimic running tracks) with the sliding resistance monitoring of the moving guide rails, the dynamic anti-slip performance of the sole on different surfaces can be quantified; the friction tester records the friction coefficient curve in real time to identify defects in the sole pattern design (such as the risk of lateral slippage caused by insufficient lateral grooves).

[0016] 3. The rebound force testing mechanism captures the deformation recovery force of the sole after repeated compression through the elastic head pressure probe. Combined with the data fusion analysis of the central control unit, it reveals the law of rebound rate decay caused by material fatigue. The multi-test mode switching module supports setting the number of cycle tests (such as 100,000 compressions) to predict the long-term collapse risk of the midsole foam. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a side view of the present invention;

[0021] Figure 4 This is a top view of the present invention;

[0022] In the diagram: 1. Base; 2. Extrusion mechanism; 3. Crank-rocker mechanism; 4. Rebound force testing mechanism; 5. Friction force testing mechanism; 6. Central control unit; 21. Translational fixed slide; 22. Vertical pressing assembly; 23. Horizontal pushing assembly; 31. Turntable; 32. Drive rod; 33. Servo motor; 41. Horizontal moving platform; 42. Horizontal adjusting screw; 43. Horizontal pressure tester; 51. Simulation test plate; 52. Movable guide rail; 53. Friction force tester; 221. Vertical guide rail; 222. Shoe sole fixing clamp; 223. Ball screw; 224. Stepper motor; 231. L-shaped base; 232. Shoe sole clamping platform; 311. Slide groove; 312. Slider; 431. Pressure probe; 432. Strain gauge sensor group; 511. Texture coating. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] In the attached diagram, all identical reference numerals refer to the same components.

[0025] like Figure 1-4 As shown, this utility model provides a device for testing the durability of sports shoe soles, comprising the following main structure:

[0026] The base 1 is made of stainless steel, and its upper surface is ground to form a horizontal reference plane to ensure the installation accuracy of each testing mechanism. Bolt fixing holes are provided on both the left and right sides of the base 1 for rigid connection with the external worktable.

[0027] The extrusion mechanism 2 includes a translational fixed slide 21: which is a rectangular aluminum alloy frame structure and is installed on the upper surface of the base 1 in parallel by two sets of linear guide rails, and can slide horizontally along the length of the base 1;

[0028] Vertical pressing assembly 22: Located on the left side of the translational fixed slide 21, including: vertical guide rail 221: two high-precision cylindrical guide rails are vertically fixed to the left side wall of the translational fixed slide 21; shoe sole fixing clamp 222: adopts a pneumatic gripper structure, slidably assembled on the vertical guide rail 221, used to clamp the heel of the shoe sole to be tested; ball screw 223: the screw axis is parallel to the vertical guide rail 221, and its screw nut is fixedly connected to the shoe sole fixing clamp 222 through a connecting plate; stepper motor 224: drives the ball screw 223 to rotate through a coupling, realizing the vertical lifting and lowering of the shoe sole fixing clamp 222, and the motor output shaft end integrates a torque limiter to prevent overload;

[0029] Horizontal pushing component 23: Located on the right side of translation fixed slide 21, including: L-shaped base 231: Its horizontal arm is fixed to the right side wall of translation fixed slide 21 by bolts; Shoe sole clamping platform 232: Located at the end of the vertical arm of L-shaped base 231, the platform surface is provided with clamping bolts with adjustable spacing for fixing the forefoot part of the shoe sole to be tested.

[0030] The crank-rocker mechanism 3 includes: a servo motor 33, mounted on the front end of the base 1 via a flange, with its output shaft facing the driving side of the translational fixed slide 21; a turntable 31, a circular steel disc, coaxially fixed to the output shaft of the servo motor 33 via a keyway, with a T-shaped groove 311 radially formed on the surface of the turntable 31; a drive rod 32, one end of which is connected to a slider 312 via a hinge shaft, the slider 312 being nested within the T-shaped groove 311 of the turntable 31 and able to slide along the groove to adjust the eccentricity; the other end of the drive rod 32 is connected to the driving end of the translational fixed slide 21 via a ball joint, converting the rotational motion of the servo motor 33 into the horizontal reciprocating motion of the translational fixed slide 21.

[0031] The rebound force testing mechanism 4 includes: a horizontal moving platform 41, which is a rectangular steel plate structure and is mounted on an auxiliary guide rail at the end of the base 1 via a bottom slider; a horizontal adjusting screw 42, whose axis is parallel to the direction of movement of the translation fixed slide 21, and whose screw nut is fixedly connected to the horizontal moving platform 41 via a bracket, and whose horizontal moving platform 41 is driven to move laterally by rotating a handwheel; and a horizontal pressure tester 43, which includes a cylindrical pressure probe 431 that passes through the central through hole of the horizontal moving platform 41, with a circular elastic head covered with silicone material at the probe contact end, and four sets of strain gauge sensors 432 attached circumferentially at the probe root to form a full-bridge circuit for detecting the rebound force signal after the sole of the shoe is compressed.

[0032] The friction testing mechanism 5 includes: a simulation test plate 51, which is a rectangular composite plate with a detachable rubber corrugated coating 511 on its surface via Velcro; two parallel linear guide rails 52, which are fixed to the middle of the base 1 by bolts, and the bottom of the simulation test plate 51 is slidably connected to the movable guide rails 52 via a slider; and a friction tester 53, which is a linear tension and compression sensor, one end of which is fixed to the side wall of the simulation test plate 51 by a bracket, and the other end is connected to the fixing hook on the side of the base 1 via a sensing head, and is used to measure the dynamic friction force when the sole of the shoe slides relative to the simulation test plate 51.

[0033] The central control unit 6 includes an industrial control computer. Its signal input terminals are connected to the encoders of the strain gauge sensor 432, the friction force tester 53, and the stepper motor 224 via data cables. Its signal output terminals control the speed of the servo motor 33 via a servo driver. The computer has a built-in testing software module that can set the number of compression-rebound test cycles and simultaneously display the peak rebound force curve, the friction coefficient change curve, and the downward displacement data.

[0034] The method of using this utility model is as follows:

[0035] 1. During testing, the sports shoe is fixed between the shoe sole fixing clamp 222 and the shoe sole clamping platform 232. The servo motor 33 drives the turntable 31 to rotate, and the drive rod 32 drives the translation fixed slide 21 to move horizontally back and forth to simulate the squeezing action when the foot hits the ground.

[0036] 2. Stepper motor 224 applies vertical pressure to the sole of the shoe via ball screw 223, while horizontal pressure tester 43 detects the deformation rebound force of the sole. When the translational fixed slide 21 moves to the end point, the forefoot of the sole contacts and slides with the simulation test plate 51, and friction tester 53 records friction data in real time;

[0037] 3. The central control unit 6 integrates multi-dimensional data to generate a sole performance evaluation report.

[0038] This utility model is a device for testing the durability of sports shoe soles, filling the technical gap in dynamic composite testing of sports shoe soles, providing a highly realistic and precise testing platform for sports equipment research and development, and helping to improve sports safety and product competitiveness.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for testing the durability of athletic shoe soles, characterized in that, include: The base (1) has a horizontal reference plane; the extrusion mechanism (2) includes a translational fixed slide (21) arranged parallel to the base (1), a vertical pressing component (22) fixed to the first side of the translational fixed slide (21), and a horizontal pushing component (23) fixed to the second side of the translational fixed slide (21); the crank rocker mechanism (3) is located on the driving side of the translational fixed slide (21) of the extrusion mechanism (2), including a servo motor (33), a turntable (31) coaxially fixed with the output shaft of the servo motor (33), and a drive rod (32) with both ends respectively hinged to the eccentric position of the turntable (31) and the driving end of the translational fixed slide (21); the rebound force testing mechanism (4) is located on the opposite side of the end point of the motion trajectory of the translational fixed slide (21), including a horizontal moving platform (41) and a water The horizontal adjustment screw (42) of the translational moving platform (41) is threaded together with the horizontal pressure tester (43) that passes through the middle of the horizontal moving platform (41). The axis of the horizontal pressure tester (43) is parallel to the direction of movement of the translational fixed slide (21). The friction force testing mechanism (5) is located below the extrusion mechanism (2) and includes a surface replaceable simulation test plate (51), a movable guide rail (52) that is slidably connected to the bottom of the simulation test plate (51), and a friction force tester (53) fixed to the side wall of the simulation test plate (51). The movable guide rail (52) is rigidly connected to the base (1). The central control unit (6) is connected to the servo motor (33), the horizontal pressure tester (43) and the friction force tester (53) and has a built-in programmable multi-test mode switching module.

2. The sports shoe sole durability testing device according to claim 1, characterized in that, The vertical pressing assembly (22) includes: a vertical guide rail (221) rigidly connected to the side wall of the translational fixed slide (21); a shoe sole fixing clamp (222) slidably mounted on the vertical guide rail (221); and a ball screw (223) that drives the shoe sole fixing clamp (222), the screw nut of which is fixedly connected to the shoe sole fixing clamp (222), and the end of the screw is connected to a stepper motor (224) with a torque limiter.

3. The sports shoe sole durability testing device according to claim 1, characterized in that, The horizontal pushing assembly (23) includes an L-shaped base (231) fixed to the side wall of the translation fixed slide (21), and its vertical arm is provided with a shoe sole clamping platform (232).

4. The sports shoe sole durability testing device according to claim 1, characterized in that, The crank rocker mechanism (3) has a turntable (31) with a groove (311), and the hinge point between the drive rod (32) and the turntable (31) is slidably hinged to the groove (311) by a slider (312).

5. The sports shoe sole durability testing device according to claim 1, characterized in that, The surface of the simulation test board (51) is provided with a removable textured coating (511), including at least one of wave pattern, particle pattern and mesh pattern, and the coating material is rubber, silicone or polyurethane.

6. The sports shoe sole durability testing device according to claim 1, characterized in that, The horizontal pressure tester (43) includes: a pressure probe (431) penetrating the horizontal moving platform (41), the contact end of which is a circular elastic head; and a strain gauge sensor group (432) located at the root of the pressure probe (431).

7. The sports shoe sole durability testing device according to claim 2, characterized in that, The multi-test mode switching module of the central control unit (6) includes: a motion parameter configuration submodule, which sets the rotation speed and reciprocating motion number of the servo motor (33); and a data fusion analysis submodule, which synchronously records the peak rebound force of the horizontal pressure tester (43), the dynamic friction coefficient curve of the friction tester (53), and the downward displacement of the stepper motor (224).

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