Shoe sole dynamic fatigue test equipment

Abstract

The utility model discloses shoe sole dynamic fatigue testing equipment which comprises a machine base, a controller installed on the machine base, a first horizontal moving device, a stamping mechanism and a clamp. The controller is used for simultaneously controlling the first horizontal moving device and the stamping mechanism to move; the first horizontal moving device is used for driving the clamp to horizontally move in the left-right direction, and the clamp is used for fixing shoes or soles; the punching mechanism is arranged above the clamp and moves in the vertical direction, an impact head is arranged at the bottom of the punching mechanism and used for impacting the shoe sole on the clamp, a pressure sensor is arranged on the impact head, and the pressure sensor is used for detecting the pressure of the contact face of the shoe sole and the impact head in real time and feeding back and transmitting signals to the controller. According to the utility model, transverse and longitudinal forces are applied to the sole, so that the compression force applied to the sole in the movement process can be simulated more accurately and truly, and the measurement result is more consistent with the actual situation.

Description

TECHNICAL FIELD

[0001] The utility model relates to shoe testing equipment technical field especially relates to a sole dynamic fatigue testing equipment. BACKGROUND

[0002] During the movement, the foot will be impacted by the ground reaction force. Due to the complexity of human movement, the ground reaction force is a resultant force, and its aspect is not a single vertical direction;

[0003] Running becomes the first sport because of its low threshold, no restriction on the site, and good exercise effect. Regardless of the running posture of the runner, during the landing process, the foot is a dynamic process from slight inversion to eversion to kick off, so the stress condition is mainly vertical ground reaction force, and left and right and front and back ground reaction force.

[0004] In order to buffer the ground reaction force, the design of sports shoes mainly improves the cushioning of the sole, thereby reducing the ground impact force on the knee joint in the vertical direction during the movement. The main means to achieve the purpose is: ① improve the material properties of the insole, improve the cushioning shape, but it is mainly subject to the progress of raw materials; ② Change the structure of the insole, absorb the impact force of the ground through deformation.

[0005] In order to detect the cushioning of the sole material, the sole or the whole shoe, impact equipment is usually used, but the material itself has attenuation and fatigue, which seriously affects the performance of the material. In order to test its fatigue resistance, there are two main methods at present: 1. Compression distortion, full name "permanent compression distortion", refers to the recovery ability of elastic material after heating and compression for a period of time, that is, permanent deformation performance; Test standard: BG6669 (foamed material), the measuring equipment is a compression deformation instrument thickness meter. 2. Sole fatigue tester is mainly used for testing the fatigue resistance of elastic sole. The design of sole fatigue tester meets the requirements of specification GB / T38018-2019.

[0006] The equipment currently used for sole fatigue resistance test usually uses two schemes, one is single long time (24 hours), and the other is multiple (tens of thousands of times) short time (seconds or minutes); Although the equipment and test method are different, the test force applied by the two is vertical force, which is used to simulate the situation of the material in the actual use process to evaluate the fatigue resistance of the material test piece or the sole.

[0007] But human movement is a compound movement, which is subjected to multi-directional ground reaction force, and the vertical force is only one of them. If only the vertical fatigue resistance is tested to evaluate and determine the performance of the material in the time movement. It is insufficient and defective. SUMMARY

[0008] The utility model discloses a shoe sole dynamic fatigue test equipment for solving the problem that the existing shoe sole fatigue resistance test equipment can only exert the force in the vertical direction, which does not conform to the stress problem of the shoe sole in the actual use process.

[0009] To achieve the above object, the utility model discloses a shoe sole dynamic fatigue test equipment, including frame, install the controller on the frame, first horizontal moving device, punch mechanism and clamp, the controller is used for controlling first horizontal moving device and punch mechanism movement simultaneously, first horizontal moving device is used to drive the clamp and moves horizontally along left and right directions, and the clamp is used for fixing shoes or shoe sole, punch mechanism sets up above the clamp, punch mechanism moves along the vertical direction, the bottom of punch mechanism is equipped with a impact head, and the impact head is used for impacting the shoe sole on the clamp, and the impact head is equipped with a pressure sensor, and the pressure sensor is used for real -time detection shoe sole and the pressure of the contact surface of impact head, and signal feedback transmission reaches the controller.

[0010] Preferably, including the second horizontal moving device installed on the frame, the second horizontal moving device moves horizontally along the front and back directions under the control of the controller, and the second horizontal moving device is used to drive the clamp and moves horizontally along the front and back directions.

[0011] Preferably, the structure of first horizontal moving device and second horizontal moving device is identical, including sliding plate, guide rail and transverse pressure device, the guide rail is installed on the frame, the bottom of sliding plate is provided with the sliding slot that cooperates with the guide rail, the clamp is installed on the sliding plate, the transverse pressure device sets up at one end of guide rail, and with sliding plate fixed connection, the transverse pressure device is used to drive sliding plate and moves horizontally along the direction of guide rail.

[0012] Preferably, the punch mechanism includes longitudinal pressure device, the bottom of longitudinal pressure device is equipped with impact head, and longitudinal pressure device moves along the vertical direction under the control of the controller, and then drives impact head and impacts the shoe sole along the vertical direction.

[0013] Preferably, the pressure range of transverse pressure device is 0-1000N. The pressure range of longitudinal pressure device is 0-5000N.

[0014] Preferably, the working frequency of transverse pressure device and longitudinal pressure device is 0-50Hz.

[0015] Preferably, the transverse pressure device is hydraulic cylinder or air cylinder, and the longitudinal pressure device is hydraulic cylinder or air cylinder.

[0016] Preferably, the clamp comprises a support column, an adjusting plate, an adjusting column and a fixing head, the support column is installed in a rectangular distribution on a base, the adjusting plate is installed on the support column, a middle part of the adjusting plate is provided with an adjusting groove, two adjusting columns are arranged in the adjusting groove and can move horizontally along the adjusting groove, an outer thread is formed in a lower part of the adjusting column, a nut is connected to the lower part of the adjusting column through the outer thread, a baffle is arranged on an upper end of the outer thread of the adjusting column, and the baffle is used for avoiding that the adjusting column passes through the adjusting groove completely.

[0017] Preferably, the clamp further comprises a rotating plate and a motor, the motor is installed on the sliding plate, and the rotating plate is installed on an output shaft of the motor.

[0018] Preferably, the fixing head comprises a first fixing head and a second fixing head, the first fixing head and the second fixing head are installed in shoes, the first fixing head is matched with a toe of the shoe, and the second fixing head is matched with a heel of the shoe.

[0019] Preferably, a data processing device is arranged, and the data processing device is electrically connected with the controller and the pressure sensor.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1. The utility model can more accurately and truly simulate the compression force suffered by the shoe sole in the movement process by applying the horizontal and vertical forces to the shoe sole, the measured result is more consistent with the actual situation, and the reliability is higher.

[0022] 2. The utility model can accurately simulate the compression force and landing frequency in the movement process, and the fatigue performance of the shoe sole material, the finished shoe sole or the finished shoe is more accurate and consistent with the actual situation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall schematic view provided in the embodiment of the utility model;

[0024] Figure 2 It is the local enlarged schematic view of A provided in the embodiment of the utility model;

[0025] Figure 3 It is the overall schematic view provided in the embodiment of the utility model;

[0026] Figure 4 It is the local enlarged schematic view of B provided in the embodiment of the utility model;

[0027] Figure 5 It is the connection schematic view of the data processing device provided in the embodiment of the utility model;

[0028] Figure 6 The whole side view schematic diagram provided in the embodiment of the utility model;

[0029] Figure 7 The partial enlarged schematic diagram at C provided in the embodiment of the utility model.

[0030] Main component symbol explanation:

[0031] 100, base; 110, support column; 200, transverse pressing device; 210, sliding plate; 220, guide rail; 230, adjusting plate; 231, adjusting groove; 240, support column; 250, adjusting column; 251, baffle; 252, nut; 253, first fixed head; 254, second fixed head; 300, longitudinal pressing device; 310, impact head; 320, controller; 330, pressure sensor; 400, rotating motor; 410, rotating plate; 500, data processing device. Specific implementation

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below by combining with the drawings and examples.

[0033] Example one

[0034] As shown in Figure 1 , Figure 2 and Figure 5 , the utility model provides a kind of dynamic fatigue test equipment, comprising: base 100, controller 320 installed on base 100, first horizontal moving device, stamping mechanism and clamp.Control 320 is used to control first horizontal moving device and stamping mechanism movement simultaneously.First horizontal moving device is used to drive clamp to move horizontally along left and right direction, and clamp is used to fix shoes or shoe sole.Stamping mechanism is arranged above clamp, and stamping mechanism moves along vertical direction, and the bottom of stamping mechanism is equipped with impact head 310, and impact head 310 is used to impact shoe sole on clamp, and impact head 310 is equipped with pressure sensor 330, and pressure sensor 330 is used to detect the pressure of the contact surface of shoe sole and impact head 310 in real time, and signal feedback is transmitted to controller 320.

[0035] In the embodiment, the first horizontal moving device includes a sliding plate 210, a guide rail 220 and a lateral pressing device 200. The guide rail 220 is installed on the base 100. The bottom of the sliding plate 210 is provided with a sliding groove matched with the guide rail 220. The clamp is installed on the sliding plate 210. The lateral pressing device 200 is arranged at one end of the guide rail 220 and is fixedly connected with the sliding plate 210. The lateral pressing device 200 is used to drive the sliding plate 210 to move horizontally along the direction of the guide rail 220. In the above embodiment, the lateral pressing device 200 is a gas cylinder. The first horizontal moving device drives the clamp to move in the left-right direction, so that the stamping machine can conveniently apply pressure to different positions in the length direction of the sole and perform detection. The lateral pressing device 200 drives the sliding plate 210 to move along the guide rail 220. When the vertical force of the stamping mechanism acts on the sliding plate 210, the guide rail 220 supports the sliding plate 210 to a certain extent, thereby improving the stability of the whole mechanism.

[0036] The stamping mechanism includes a longitudinal pressing device 300. The bottom of the longitudinal pressing device 300 is provided with an impact head 310. The longitudinal pressing device 300 moves in the vertical direction under the control of a controller 320, thereby driving the impact head 310 to impact the sole in the vertical direction. In the above embodiment, the longitudinal pressing device 300 is a gas cylinder.

[0037] In the embodiment, the actual stress condition of the material in the human motion process can be simulated more accurately by combining the vertical force and the horizontal force, so as to more accurately evaluate the fatigue resistance of the material or the sole.

[0038] In the embodiment, the position of landing in general running is the heel. However, the size of the heel is different for different styles and sizes of shoes. Therefore, the diameter of the impact head 310 includes four specifications, i.e., 15 cm, 20 cm, 25 cm and 30 cm.

[0039] The data processing device 500 is electrically connected with the lateral pressing device 200 and the longitudinal pressing device 300. The data processing device 500 is a computer. The computer controls the pressure and working frequency of the lateral pressing device 200 and the longitudinal pressing device 300 and coordinates the actions of the lateral pressing device 200 and the longitudinal pressing device 300, so that the test is closer to the actual stress condition of the sole.

[0040] The force platform and high-speed camera show that the step frequency interval is between 120-190, the landing time is 100-300 ms, the vertical pressure interval is 600-2500 N, and the horizontal pressure is 20-200 N. Based on the above data, the compression frequency, compression force and compression time on the material of the pressure pump are set. In this embodiment, the pressure interval of the transverse pressure device 200 is 0-1000 N, and the pressure interval of the longitudinal pressure device 300 is 0-5000 N. The working frequency of the transverse pressure device 200 and the longitudinal pressure device 300 is 0-50 Hz.

[0041] The clamp includes a support column 240, an adjusting plate 230, an adjusting column 250, and a fixing head. The support column 240 is installed in a rectangular distribution on the base 100. The adjusting plate 230 is installed on the support column 240. The middle part of the adjusting plate 230 is provided with an adjusting groove 231. Two adjusting columns 250 are arranged in the adjusting groove 231 and can move horizontally along the adjusting groove 231. The lower part of the adjusting column 250 is provided with an external thread. The lower part of the adjusting column 250 is threadedly connected with a nut 252. The adjusting column 250 is provided with a baffle 251 at the upper end of the external thread. The baffle 251 is used to avoid the adjusting column 250 from penetrating through the adjusting groove 231. The fixing head is installed at the top end of the adjusting column 250.

[0042] In this embodiment, the fixing head includes a first fixing head 253 and a second fixing head 254. The first fixing head 253 and the second fixing head 254 are both installed in the shoe. The first fixing head 253 cooperates with the toe of the shoe, and the second fixing head 254 cooperates with the heel of the shoe.

[0043] In this embodiment, the distance between the two adjusting columns 250 is adjusted according to the size of the shoe, so that the first fixing head 253 is inserted into the toe of the shoe, and the second fixing head 254 is inserted into the position of the heel of the shoe, thereby fixing the measured shoe. After adjustment, the nut 252 is connected with the external thread at the bottom of the adjusting column 250 and is tightened, so that the position of the adjusting column 250 is fixed. The impact head 310 of the longitudinal pressure device 300 just passes through between the two adjusting columns 250.

[0044] Embodiment Two

[0045] As shown in Figures 3-4 The difference between this embodiment and embodiment one is that the clamp further includes a rotating plate 410 and a rotating motor 400. The rotating motor 400 is installed on the sliding plate 210. The rotating plate 410 is installed on the output shaft of the rotating motor 400. The support column 240 is installed on the rotating plate 410. The rotating motor 400 is electrically connected with the data processing device 500.

[0046] In the embodiment, the rotating plate 410 is rotated by the computer control rotating motor 400 to rotate through a certain angle, so that the stress scenario of the shoe in use can be simulated more realistically, and the test data is closer to the actual situation.

[0047] Embodiment three

[0048] The difference between the embodiment and the embodiment one is that the fixed head is a clamp. In the embodiment, the shoe or the shoe sole is clamped by the clamp in the length direction, and then the test is performed.

[0049] Embodiment four

[0050] As shown in Figure 6 , Figure 7 The difference between the embodiment and the embodiment one is that the second horizontal moving device is installed on the machine base 100, the second horizontal moving device is horizontally moved in the front-back direction under the control of the controller 320, and the second horizontal moving device is used to drive the clamp to be horizontally moved in the front-back direction, so that the impact head 310 can test the part in the width direction of the shoe sole. And the first horizontal moving device and the rotating motor 400 can be coordinated to simulate the more realistic human foot movement. In the embodiment, the structure of the first horizontal moving device and the second horizontal moving device is consistent.

[0051] Embodiment five

[0052] The difference between the embodiment and the embodiment one is that the transverse pressure device 200 and the longitudinal pressure device 300 are both hydraulic cylinders.

[0053] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of the change or the replacement in the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A sole dynamic fatigue testing apparatus, characterized by, The machine base (100), the controller (320) installed on the machine base (100), the first horizontal moving device, the stamping mechanism and the clamp; The controller (320) is used for simultaneously controlling the first horizontal moving device and the stamping mechanism to move; The first horizontal moving device is used for driving the clamp to move horizontally along the left-right direction, and the clamp is used for fixing the shoes or the shoe soles; The stamping mechanism is arranged above the clamp, the stamping mechanism moves along the vertical direction, the bottom of the stamping mechanism is provided with an impact head (310), the impact head (310) is used for impacting the shoe soles on the clamp, a pressure sensor (330) is arranged on the impact head (310), the pressure sensor (330) is used for detecting the pressure of the contact surface between the shoe soles and the impact head (310) in real time and feeding back signals to the controller (320).

2. The shoe sole dynamic fatigue test equipment according to claim 1, further comprising a second horizontal moving device installed on the machine base (100), the second horizontal moving device moves horizontally along the front-back direction under the control of the controller (320), and the second horizontal moving device is used for driving the clamp to move horizontally along the front-back direction.

3. The shoe sole dynamic fatigue test equipment according to claim 2, wherein the first horizontal moving device and the second horizontal moving device have the same structure, comprising a sliding plate (210), a guide rail (220) and a transverse pressing device (200), the guide rail (220) is installed on the machine base (100), the bottom of the sliding plate (210) is provided with a sliding groove matched with the guide rail (220), the clamp is installed on the sliding plate (210), the transverse pressing device (200) is arranged at one end of the guide rail (220) and is fixedly connected with the sliding plate (210), and the transverse pressing device (200) is used for driving the sliding plate (210) to move horizontally along the guide rail (220).

4. The shoe sole dynamic fatigue test equipment according to claim 3, wherein the stamping mechanism comprises a longitudinal pressing device (300), the bottom of the longitudinal pressing device (300) is provided with an impact head (310), the longitudinal pressing device (300) moves along the vertical direction under the control of the controller (320), and then drives the impact head (310) to impact the shoe soles along the vertical direction.

5. The shoe sole dynamic fatigue test equipment according to claim 4, wherein the pressure range of the transverse pressing device (200) is 0-1000N; The pressure range of the longitudinal pressing device (300) is 0-5000N; The working frequency of the transverse pressing device (200) and the longitudinal pressing device (300) is 0-50Hz.

6. The shoe sole dynamic fatigue test equipment according to claim 4, wherein the transverse pressing device (200) is a hydraulic cylinder or an air cylinder; The longitudinal pressing device (300) is a hydraulic cylinder or an air cylinder.

7. The shoe sole dynamic fatigue test equipment according to claim 2, wherein ​ ​ ​ ​ ​ ​ The clamp comprises a support column (240), an adjusting plate (230), an adjusting column (250) and a fixing head, the support column (240) is installed in a rectangular distribution on a base (100), the adjusting plate (230) is installed on the support column (240), a middle part of the adjusting plate (230) is provided with an adjusting groove (231), the adjusting column (250) is provided with two, is arranged in the adjusting groove (231) and can move horizontally along the adjusting groove (231), an outer thread is formed in a lower part of the adjusting column (250), the adjusting column (250) is screw-connected with a nut (252) in the lower part, the adjusting column (250) is provided with a baffle (251) on an upper end of the outer thread, the baffle (251) is used for avoiding that the adjusting column (250) passes through the adjusting groove (231) completely, and the fixing head is installed on a top end of the adjusting column (250).

8. The sole dynamic fatigue testing apparatus according to claim 7, wherein: The clamp further comprises a rotating plate (410) and a motor, the motor is installed on the sliding plate (210), the rotating plate (410) is installed on an output shaft of the motor, and the support column (240) is installed on the rotating plate (410).

9. The sole dynamic fatigue testing apparatus according to claim 7, wherein: The fixing head comprises a first fixing head (253) and a second fixing head (254), the first fixing head (253) and the second fixing head (254) are both installed in a shoe, the first fixing head (253) is matched with a toe of the shoe, and the second fixing head (254) is matched with a heel of the shoe.

10. The sole dynamic fatigue testing apparatus according to any one of claims 1-9, further comprising a data processing device (500), and the data processing device (500) is electrically connected with the controller (320) and the pressure sensor (330). ​

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