Device for testing the bending and transverse torsional stiffness of shoes

Abstract

The utility model discloses a shoe bending and transverse torsion rigidity's testing arrangement belongs to footwear test technical field, including base, operation platform, bending mechanism, torsion mechanism, first drive mechanism and second drive mechanism, operation platform is fixed with base connection through ear and is equipped with displacement groove, the shoe head support seat of bending mechanism is cooperated with displacement groove through displacement block, and the bending of the forefoot of shoes is realized by the drive of first drive motor, electric cylinder and push rod, be equipped with the pressing plate, the branch plate, the first screw rod, the limiting slot and the limiting block on the shoe head support seat, realize adjustable clamping of the forefoot of shoes, be equipped with C type support, second screw rod, gasket and heel placing table on the heel support seat of torsion mechanism, and the transverse torsion of heel is realized by the drive of second drive motor, speed reducer and pivot.

Description

Technical Field

[0001] This utility model belongs to the field of footwear testing technology, specifically relating to a testing device for the bending and lateral torsional stiffness of shoes. Background Technology

[0002] Currently, the footwear industry commonly uses separate bending and torsion testing devices to evaluate the mechanical properties of shoe soles. The bending test device measures flexural life and flexural stiffness by repeatedly bending the forefoot, while the torsion test device measures torsional stiffness by fixing the heel and applying torque. On the one hand, these separate devices result in long testing procedures and large repeated clamping errors, and make it difficult to simultaneously obtain the stiffness of the shoe under both bending and lateral torsion conditions at the same station. On the other hand, existing bending test devices lack adequate obstruction structures directly in front of the toe, and torsion test devices lack adequate obstruction structures on both sides of the heel, making them prone to relative displacement during testing and thus affecting the test results.

[0003] An existing device (publication number CN202635801U) for testing the bending and torsion performance of footwear uses a toe base and a heel base, and a rotating component to rotate them relative to each other by a predetermined angle in the horizontal plane, thereby switching between bending and torsion test modes on a single set of fixtures. The drive is achieved by a single power source outputting torque via bevel gears, racks, or screws. However, while this device reduces the number of fixtures, it still requires a movable base to switch test modes, and cannot perform bending and torsion simultaneously and continuously, resulting in low testing efficiency, large station switching errors, complex structure, and cumbersome operation. Utility Model Content

[0004] The technical problem solved by this utility model is to overcome the defects in the existing technology and provide a testing device for the bending and lateral torsional stiffness of shoes.

[0005] The technical solution adopted in this utility model is as follows:

[0006] The shoe bending and lateral torsional stiffness testing device of this utility model includes a support mechanism, which includes a base and an operating table. The operating table is located above the base, and a bending mechanism and a torsion mechanism are provided above the operating table. The bending mechanism is connected to a first driving mechanism, and the torsion mechanism is connected to a second driving mechanism. Both the first driving mechanism and the second driving mechanism are located above the operating table. The bending mechanism includes a toe support, and the torsion mechanism includes a heel support. The shoe is placed between the toe support and the heel support.

[0007] The outer side of the control panel is provided with several fixing ears, which are fixedly connected to the base by bolts. The control panel is provided with symmetrical displacement grooves.

[0008] The shoe toe support is equipped with a pressure plate and a support plate. The pressure plate is located above the support plate. The support plate is equipped with a symmetrical first screw that runs through the support plate from bottom to top. The shoe toe support is symmetrically equipped with displacement blocks that cooperate with displacement grooves.

[0009] The inner walls on both sides of the shoe toe support are symmetrically provided with limiting grooves, and both ends of the pressure plate are provided with limiting blocks, which cooperate with the limiting grooves.

[0010] The shoe toe support is provided with several first limiting holes symmetrically on both sides, and the support plate is provided with second limiting holes on both sides corresponding to the positions of the first limiting holes. The support plate is fixed to the inner wall of the shoe toe support by installing bolts in the first limiting holes and the second limiting holes.

[0011] The heel support is equipped with a C-shaped bracket, with a second screw running through the upper part of the C-shaped bracket. A pad is provided at the bottom of the second screw, and a heel placement platform is provided on the inner bottom side between the C-shaped brackets.

[0012] The first drive mechanism includes a first drive motor and an electric cylinder. The first drive motor is movably connected to the electric cylinder. The electric cylinder has a push rod inside, which is fixedly connected to the back side of the shoe toe support.

[0013] The second drive mechanism includes a second drive motor, the rotating end of which is connected to a reducer, the reducer is connected to a rotating shaft, and the rotating shaft is fixedly connected to a C-shaped bracket.

[0014] This utility model has the following beneficial effects:

[0015] 1. The bending and torsion mechanisms are integrated on the operating table, enabling bending and lateral torsion tests, thus shortening the test cycle and reducing repeated clamping errors.

[0016] 2. The fixing ears ensure a fixed connection between the operating table and the base through bolts, and the displacement groove provides stable linear guidance for the shoe toe support, improving the repeatability accuracy of the test.

[0017] 3. The toe support seat clamps the toe between the pressure plate and the support plate by tightening the first screw, which can accommodate toe thicknesses and ensure that the bending force is applied in a consistent position. At the same time, the toe support seat blocks the front of the toe, so that the toe will not shift relative to the front when bending.

[0018] 4. The limiting blocks on both sides of the pressure plate slide up and down in the limiting groove. After determining the height and conducting the test, the pressure plate can be prevented from tilting, ensuring that the load is transmitted along the longitudinal center line of the shoe during the bending process.

[0019] 5. The support plate is height-adjustable through the first and second limiting holes, allowing for quick replacement of test points to meet the bending stiffness testing requirements of shoe samples of different sizes and toe thicknesses.

[0020] 6. The pad and heel placement platform clamp the heel to prevent slippage and ensure that the torsional torque is accurately applied to the center of the heel. The two sides of the heel placement platform have a blocking effect on the two sides of the heel to prevent the relative displacement of the heel due to excessive torque during the torsion test.

[0021] 7. The first and second drive mechanisms ensure the automation level of bending and lateral torsional stiffness testing, facilitating later maintenance while guaranteeing testing quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model from one perspective;

[0023] Figure 2 This is a second perspective view of the overall structure of this utility model;

[0024] Figure 3 This is a structural diagram of the supporting mechanism;

[0025] Figure 4 A schematic diagram from the perspective of the bending mechanism and the first drive mechanism;

[0026] Figure 5 A second-view schematic diagram of the bending mechanism and the first drive mechanism;

[0027] Figure 6 This is an exploded structural diagram of the bending mechanism;

[0028] Figure 7 A schematic diagram from the perspective of the torsion mechanism and the second drive mechanism;

[0029] Figure 8 This is a second-view schematic diagram of the torsion mechanism and the second drive mechanism.

[0030] The components include: 1. Support mechanism; 101. Base; 102. Operating table; 103. Fixing ear; 104. Displacement groove; 2. Bending mechanism; 201. Toe support; 202. Pressure plate; 203. Support plate; 204. First screw; 205. Limiting groove; 206. Limiting block; 207. Displacement block; 208. First limiting hole; 209. Second limiting hole; 3. Torsion mechanism; 301. Heel support; 302. C-shaped bracket; 303. Second screw; 304. Gasket; 305. Heel placement compartment; 4. First drive mechanism; 401. First drive motor; 402. Electric cylinder; 403. Push rod; 5. Second drive mechanism; 501. Second drive motor; 502. Reducer; 503. Rotating shaft. Detailed Implementation

[0031] like Figures 1 to 8As shown, the shoe bending and lateral torsional stiffness testing device of this utility model includes a support mechanism 1. The support mechanism 1 includes a base 101 and an operating table 102. The operating table 102 is located above the base 101. A bending mechanism 2 and a torsion mechanism 3 are provided above the operating table 102. The bending mechanism 2 is connected to a first driving mechanism 4, and the torsion mechanism 3 is connected to a second driving mechanism 5. Both the first driving mechanism 4 and the second driving mechanism 5 are located above the operating table 102. The bending mechanism 2 includes a toe support 201, and the torsion mechanism 3 includes a heel support 301. The shoe is placed between the toe support 201 and the heel support 301.

[0032] The outer side of the operating table 102 is provided with several fixing ears 103, which are fixedly connected to the base 101 by bolts. The operating table 102 is provided with symmetrical displacement grooves 104.

[0033] The shoe toe support 201 is provided with a pressure plate 202 and a support plate 203. The pressure plate 202 is located above the support plate 203. The support plate 203 is provided with a symmetrical first screw 204, which passes through the support plate 203 from bottom to top. The shoe toe support 201 is symmetrically provided with displacement blocks 207, which cooperate with the displacement groove 104.

[0034] The shoe toe support 201 has symmetrical limiting grooves 205 on both inner walls, and the pressure plate 202 has limiting blocks 206 at both ends, which cooperate with the limiting grooves 205.

[0035] The shoe toe support 201 has several first limiting holes 208 symmetrically arranged on both sides, and the support plate 203 has second limiting holes 209 on both sides corresponding to the positions of the first limiting holes 208. The support plate 203 is fixed to the inner wall of the shoe toe support 201 by installing bolts in the first limiting holes 208 and the second limiting holes 209.

[0036] The heel support 301 is provided with a C-shaped bracket 302, the upper part of the C-shaped bracket 302 is provided with a second screw 303, the bottom of the second screw 303 is provided with a pad 304, and the bottom inner side of the C-shaped bracket 302 is provided with a heel placement platform 305.

[0037] The first drive mechanism 4 includes a first drive motor 401 and an electric cylinder 402. The first drive motor 401 is movably connected to the electric cylinder 402. The electric cylinder 402 has a push rod 403 inside, and the push rod 403 is fixedly connected to the back side of the shoe toe support 201.

[0038] The second drive mechanism 5 includes a second drive motor 501. The rotating end of the second drive motor 501 is connected to a reducer 502. The reducer 502 is connected to a rotating shaft 503. The rotating shaft 503 is fixedly connected to a C-shaped bracket 302.

[0039] Specifically, the shoe bending and lateral torsional stiffness testing device described in this utility model is placed on the experimental table. The base 101 is locked to the operating table 102 with fixing ears 103 by four sets of bolts. The operating table 102 has two parallel displacement grooves 104 in the center. The displacement grooves 104 are used to guide the displacement block 207 of the shoe toe support 201.

[0040] Specifically, the toe support 201 and the heel support 301 are both integrally formed. Limiting grooves 205 are formed on both side walls of the toe support 201, and the limiting blocks 206 at both ends of the pressure plate 202 can slide up and down within the limiting grooves 205. The support plate 203 is aligned with the first limiting hole 208 on the side wall of the toe support 201 through the second limiting holes 209 on both sides and is fixed with bolts. Loosening the bolts allows the height of the support plate 203 to be adjusted up and down to accommodate different forefoot thicknesses. The first screw 204 passes through the support plate 203 and presses against the pressure plate 202. A nut is placed on the outside of the first screw 204 and above the pressure plate 202 to firmly clamp the toe between the pressure plate 202 and the support plate 203.

[0041] Specifically, the first drive mechanism 4 is installed at the rear end of the toe support 201. The first drive motor 401 is a servo motor, which is connected to the electric cylinder 402 via a coupling. The electric cylinder 402 has a built-in push rod 403, the front end of which is fixedly connected to the back plate of the toe support 201. The control system can set the push rod stroke and speed to complete the reciprocating bending of the toe part at the corresponding angle, and collect the bending force and displacement curves through displacement sensors and force sensors to calculate the bending stiffness.

[0042] Specifically, the torsion mechanism 3 is located at the rear end of the heel support 301. The heel support 301 is equipped with a C-shaped bracket 302, with a threaded hole at the top for the second screw 303 to be screwed into. The bottom of the second screw 303 is fixedly connected to a washer 304. Preferably, the surface of the heel placement platform 305 can be patterned or have a rubber pad to further prevent the heel from slipping during testing. After the heel is inserted, the second screw 303 is tightened by screwing on the nut to clamp the heel.

[0043] Specifically, the second drive motor is a servo motor, which outputs torque through the reducer 502; the rotating shaft 503 is fixed to the C-shaped bracket 302 by a key connection. When the motor rotates, it drives the heel to reciprocate around the shaft, and the torque and angular displacement data are recorded by the torque sensor to calculate the lateral torsional stiffness.

[0044] Specifically, in the actual test, the entire shoe is first placed between the toe support 201 and the heel support 301. The height of the support plate 203 is adjusted and the first screw 204 is tightened to fix the toe, and the second screw 303 is tightened to fix the heel. The toe support 201 is driven to reciprocate along the displacement groove 104 by the push rod 403 in the first drive mechanism 4 to test the bending stiffness of the shoe. The C-shaped bracket 302 is driven to rotate as a whole by the rotating shaft 503 in the second drive mechanism 5. The toe remains fixed between the pressure plate 202 and the support plate 203, and only the heel is rotated by the C-shaped bracket 302.

Claims

1. A testing device for the bending and lateral torsional stiffness of a shoe, comprising a support mechanism (1), said support mechanism (1) comprising a base (101) and an operating table (102), said operating table (102) being disposed above the base (101), characterized in that, The operating table (102) is provided with a bending mechanism (2) and a torsion mechanism (3) above it. The bending mechanism (2) is connected to a first driving mechanism (4), and the torsion mechanism (3) is connected to a second driving mechanism (5). The first driving mechanism (4) and the second driving mechanism (5) are both located above the operating table (102). The bending mechanism (2) includes a toe support seat (201), and the torsion mechanism (3) includes a heel support seat (301). The shoe is placed between the toe support seat (201) and the heel support seat (301).

2. The testing device for shoe bending and lateral torsional stiffness according to claim 1, characterized in that, The operating table (102) has several fixing ears (103) on its outer side. The fixing ears (103) are fixedly connected to the base (101) by bolts. The operating table (102) is symmetrically provided with displacement grooves (104).

3. The testing device for shoe bending and lateral torsional stiffness according to claim 2, characterized in that, The shoe toe support (201) is provided with a pressure plate (202) and a support plate (203). The pressure plate (202) is located above the support plate (203). The support plate (203) is provided with a symmetrical first screw (204). The first screw (204) passes through the support plate (203) from bottom to top. The shoe toe support (201) is symmetrically provided with displacement blocks (207). The displacement blocks (207) cooperate with the displacement grooves (104).

4. The testing device for shoe bending and lateral torsional stiffness according to claim 3, characterized in that, The shoe toe support (201) has symmetrically provided limiting grooves (205) on both sides of its inner wall, and the pressure plate (202) has limiting blocks (206) at both ends, which cooperate with the limiting grooves (205).

5. The testing device for shoe bending and lateral torsional stiffness according to claim 3, characterized in that, The shoe toe support (201) has several first limiting holes (208) symmetrically arranged on both sides, and the support plate (203) has second limiting holes (209) on both sides corresponding to the positions of the first limiting holes (208). The support plate (203) is fixed between the inner wall of the shoe toe support (201) by installing bolts in the first limiting holes (208) and the second limiting holes (209).

6. The testing device for shoe bending and lateral torsional stiffness according to claim 1, characterized in that, The heel support base (301) is provided with a C-shaped bracket (302), the upper part of the C-shaped bracket (302) is provided with a second screw (303), the bottom of the second screw (303) is provided with a pad (304), and the bottom inner side of the C-shaped bracket (302) is provided with a heel placement platform (305).

7. The testing device for shoe bending and lateral torsional stiffness according to claim 2, characterized in that, The first drive mechanism (4) includes a first drive motor (401) and an electric cylinder (402). The first drive motor (401) is movably connected to the electric cylinder (402). The electric cylinder (402) is provided with a push rod (403) inside. The push rod (403) is fixedly connected to the back side of the shoe toe support (201).

8. The testing device for shoe bending and lateral torsional stiffness according to claim 6, characterized in that, The second drive mechanism (5) includes a second drive motor (501), and a reducer (502) is connected to the rotating end of the second drive motor (501). The reducer (502) is connected to a rotating shaft (503), and the rotating shaft (503) is fixedly connected to a C-shaped bracket (302).

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