Shoe sole wear resistance detection device

Abstract

The invention provides a shoe sole wear resistance detection device, and belongs to the technical field of wear resistance detection, the shoe sole wear resistance detection device comprises an instrument body and a shoe sole sample formed by punching a shoe sole, and further comprises a simulation detection assembly and a dust removal cleaning assembly; under the guidance of the guide ring, the first support arm can periodically move up and down, the process simulates the dynamic change of the pressure borne by the sole in different gait stages when a person walks, and in combination with the rotation of the sole sample, not only is the vertical pressure change simulated, but also the friction force in different directions can be simulated through relative sliding. The stress state of the shoe sole in the walking process is restored, so that the detection is closer to the actual use scene; the dust removal system is driven by the power of the detection device to operate, so that all-directional coverage of the whole abrasion area is realized, the retention time of dust in the detection area is reduced, dust interference can be avoided, the state of a sole sample before and after detection is only influenced by abrasion of a grinding wheel, and the detection result more truly reflects the abrasion resistance of the sole.

Description

Technical Field

[0001] The present invention relates to the technical field of wear resistance testing, in particular to a device for testing the wear resistance of a shoe sole. Background Art

[0002] In today's footwear market, sole wear resistance is a key quality indicator, not only directly impacting consumer experience and product lifespan, but also having a profound impact on environmental protection and resource utilization. With increasing consumer demand for footwear durability and the footwear industry's urgent need to improve product quality and optimize material selection, sole wear resistance testing has become a core requirement for industry development.

[0003] Existing sole wear resistance testing devices have exposed many limitations in practical applications. Traditional testing devices usually use constant pressure loading, such as placing a grinding wheel or friction block in contact with the sole surface at a fixed pressure. The sole is subjected to a single and constant friction force during uniform rotation or linear motion. This method can only simulate the wear of the sole under a specific static pressure, and cannot reflect the dynamic changes in pressure when a person walks (such as the impact force when the heel lands, the continuous pressure when the full palm is supported, and the pressure release when the toes leave the ground). There is a large deviation from the actual usage scenario, resulting in a large deviation between the test results and the actual wear conditions, and it cannot provide a reliable basis for footwear product research and development, production and quality control.

[0004] How to invent a sole wear resistance testing device to solve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In order to make up for the above deficiencies, the present invention provides a sole wear resistance testing device, which aims to solve the problems mentioned in the above background.

[0006] The present invention is achieved in that: The present invention provides a sole wear resistance testing device, comprising an instrument body and a sole sample punched from a sole, wherein a control panel is provided on the front side of the instrument body, a mounting plate is mounted on the instrument body, a limit plate is fixedly mounted on the mounting plate, a first motor is disposed inside the instrument body, an output end of the first motor is fixedly connected to a connecting gear disk, the sole sample is placed on the connecting gear disk, a plurality of mounting seats are fixedly mounted on the rear side of the instrument body, a positioning shaft is rotatably connected to the middle portion of the mounting seat, a second support arm and two first support arms are rotatably connected to the positioning shaft of the corresponding mounting seat, and the instrument further comprises: Simulation detection component: the simulation detection component is arranged on the connecting gear disc and the support arm; Dust removal and cleaning component: The dust removal and cleaning component is arranged on the mounting plate and the second support arm.

[0007] Preferably, the simulation detection component includes a guide ring fixedly connected to the connecting gear disk and a connecting tube fixedly connected to one end of the support arm, an annular groove is formed between the guide ring and the connecting gear disk, a pad is installed in the annular groove, a positioning bolt is provided in the middle of the annular groove, a fixing nut is threadedly connected to the positioning bolt, an installation groove is provided on the rear side of the limit plate, a tension spring is hingedly installed in the installation groove, the upper end of the tension spring is hinged to the support arm one, and a mounting sleeve is installed on the side wall of the support arm one corresponding to the top of the guide ring, and a ball bearing is rotatably clamped at the bottom of the mounting sleeve.

[0008] Preferably, a through hole matching the positioning bolt is provided in the middle of the sole sample, and the sole sample is fixed on the pad by a fixing nut after passing through the positioning bolt.

[0009] Preferably, the top of the guide ring is arranged in an inclined shape, and the end of the ball is against the top of the guide ring.

[0010] Preferably, the interior of the connecting tube is slidably connected to a sliding sleeve, and a groove body for the sliding sleeve to slide is provided inside the connecting tube. A sealing plate is installed on one side of the connecting tube, and an adjusting screw 1 is threadedly connected to the sealing plate. One end of the adjusting screw 1 is rotatably engaged with the sliding sleeve, and the other end extends to the outside of the connecting tube. Motor 2 is installed inside the sliding sleeve, and the end of the motor 2 passes through the side wall of the connecting tube and a grinding wheel is fixedly installed thereon.

[0011] Preferably, the grinding wheel and the cushion block are both detachable.

[0012] Preferably, the dust removal cleaning assembly includes a gear, a dust storage box, a dust collection head and a vertical plate fixedly connected to the top of the mounting plate, the middle of the gear is fixedly installed with a limiting shaft, the bottom of the limiting shaft is rotatably engaged with the mounting plate, the top of the gear is fixedly connected with bevel gear 1, the gear is meshed with the connecting gear plate, the vertical plate is rotatably connected with the mounting shaft, the mounting shaft is fixedly installed with bevel gear 2, the bevel gear 1 is meshed with bevel gear 2, the side wall of the vertical plate is fixedly connected with an L-shaped plate, the dust storage box is fixed to the L-shaped plate by a mounting bolt, the end of the mounting shaft passes through the bottom wall of the dust storage box and extends to the inside of the dust storage box, the end of the mounting shaft located inside the dust storage box is fixedly installed with a suction fan blade, and the end of the dust storage box away from bevel gear 2 is installed with a one-way valve and a hose.

[0013] Preferably, the dust collector head is arranged on the second support arm, a dust guide platform is provided inside the dust collector head, limiting sliders are provided on both sides of the dust collector head, and a limiting groove for the sliding of the dust collector head is provided on the second support arm. The interior of the second support arm is rotatably connected with the second adjusting screw, one end of the second adjusting screw is rotatably clamped inside the dust collector head, and a quick connector is installed on the top wall of the dust collector head corresponding to the top of the dust guide platform, and one end of the hose is plugged into the quick connector.

[0014] Preferably, the inner wall of the dust storage box away from the hose is fixedly connected with a spring, the end of the spring is fixedly connected with an inner baffle, the inner baffle is slidably sleeved on the outside of the mounting shaft, one side of the inner baffle is fixedly connected with an incomplete cylinder, the bottom wall of the dust storage box is provided with a through groove matching the incomplete cylinder, the end of the incomplete cylinder extends to the outside of the dust storage box and is fixedly connected with an outer baffle, and the side wall of the outer baffle facing the dust storage box is fixedly connected with a number of stop needles, and the bottom wall of the dust storage box is provided with a number of through holes matching the stop needles, and the through holes are distributed on the upper side of the mounting shaft.

[0015] Preferably, a cleaning door is sealed and hinged on the dust storage box, the bottom of the dust suction head is against the surface of the sole sample, the bottom of the dust suction head is hollowed out, and a suction groove is provided on the side wall of the dust suction head facing the grinding wheel.

[0016] The beneficial effects of the present invention are: 1. During the test, the sole sample rotates and the ball rolls along the inclined guide ring. Under the guidance of the guide ring, the support arm 1 will produce periodic up and down movement. At this time, the tension spring plays an elastic role. On the one hand, it restricts the movement range of the support arm 1 and maintains its relatively stable position; on the other hand, it works together with the tilting force of the guide ring to make the distance between the grinding wheel installed on the support arm 1 and the surface of the sole sample change regularly. This process simulates the dynamic changes in the pressure on the sole at different gait stages when a person walks. Combined with the rotation of the sole sample, it not only simulates the vertical pressure change, but also simulates the friction in different directions through relative sliding, which more comprehensively restores the force state of the sole during walking, making the test closer to the actual usage scenario. Compared with the traditional single pressure wear detection method, this device can more realistically restore the wear process of the sole in actual use.

[0017] 2. The detection device's own power is used to drive the dust removal system, without the need for additional energy. When the suction fan blades generate negative pressure, the bottom suction grooves can directly absorb the dust on the surface of the sole sample under the action of the air pressure difference, while the side wall suction grooves can quickly capture the dust splashed or adhered to the grinding wheel surface due to high-speed rotation. The bottom suction grooves can fully cover the surface of the sole sample, while the side wall suction grooves are targeted at the grinding wheel surface and surrounding areas. The two work together to achieve full coverage of the entire wear area, reduce the residence time of dust in the detection area, improve dust collection efficiency, and ensure the cleanliness of the detection environment; timely removal of dust through the bottom of the vacuum head and the side wall suction grooves can avoid dust interference, ensure that the status of the sole sample before and after the test is only affected by the wear of the grinding wheel, so that the test results more truly reflect the wear resistance of the sole, and improve the accuracy and reliability of the test results.

[0018] 3. By controlling the speed of motor 1, the dust collection efficiency can be controlled, and the dynamic matching of dust collection efficiency and wear test intensity can be achieved; through the cooperation of the stop needle and the through hole, on the one hand, normal ventilation can be achieved, and on the other hand, the probability of dust passing through the gap between the stop needle and the through hole can be reduced; when motor 1 stops running, under the action of the spring, the inner baffle will drive the stop needle to reset through the incomplete cylinder and the outer baffle, and re-seal the through hole. On the one hand, it can prevent dust from leaking out and maintain the sealing of the dust storage box. On the other hand, during the resetting process, it can also clear the dust that may remain in the through hole to ensure that the exhaust effect can be maintained and avoid blockage affecting the next operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a right side structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the top structure of the present invention; Figure 4 It is a right side cross-sectional structural schematic diagram of the present invention; Figure 5 The present invention Figure 4 A in the middle is an enlarged structural diagram; Figure 6 The present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7This is a schematic diagram of the motor installation position structure of the present invention; Figure 8 It is a schematic diagram of the tension spring structure of the present invention; Figure 9 It is a schematic diagram of the cross-sectional structure of the connecting tube of the present invention; Figure 10 The present invention Figure 9 The enlarged structural diagram at C in the middle; Figure 11 This is a schematic diagram of the structure of the present invention when the support arm 1 and the support arm 2 are flipped; Figure 12 It is a schematic diagram of the partial explosion structure of the present invention; Figure 13 It is a schematic structural diagram of the dust collector head of the present invention; Figure 14 This is a schematic diagram of the guide ring and connecting gear disc structure of the present invention; Figure 15 It is a schematic diagram of the sole sample structure of the present invention.

[0021] Figure: 1. Instrument body; 2. Sole sample; 3. Support arm 1; 4. Support arm 2; 5. Guide ring; 6. Gear; 7. Dust storage box; 8. Motor 1; 9. Motor 2; 10. Mounting sleeve; 11. Mounting plate; 12. Limit plate; 13. Mounting seat; 31. Connecting tube; 32. Closing plate; 33. Adjusting screw 1; 34. Sliding sleeve; 41. Adjusting screw 2; 42. Cleaning head; 43. Limiting groove; 44. Quick connector; 51. Connecting gear disc; 52. Spacer; 60. Limiting shaft; 61. Cone Gear 1; 62. Bevel gear 2; 63. Mounting shaft; 64. Suction fan blade; 65. Incomplete cylinder; 66. Spring; 71. Cleaning door; 72. One-way valve; 73. Hose; 91. Grinding wheel; 101. Ball bearing; 111. Vertical plate; 112. L-shaped plate; 121. Mounting groove; 122. Tension spring; 131. Positioning shaft; 421. Dust guide table; 422. Limit slider; 511. Positioning bolt; 512. Fixing nut; 651. Inner baffle; 652. Outer baffle; 653. Stop needle. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] Example 1, refer to Figures 1-15A sole wear resistance testing device includes an instrument body 1 and a sole sample 2 punched from a sole. A control panel is provided on the front side of the instrument body 1 for operating the instrument. A mounting plate 11 is mounted on the instrument body 1, and a limit plate 12 is fixedly mounted on the mounting plate 11. A motor 8 is provided inside the instrument body 1, and an output end of the motor 8 is fixedly connected to a connecting toothed disc 51. The sole sample 2 is placed on the connecting toothed disc 51. The connecting toothed disc 51 rotates under the drive of the motor 8, driving the sole sample 2 to rotate synchronously, providing a motion basis for wear detection. Several mounting seats 13 are fixedly mounted on the rear side of the instrument body 1. The middle part of the mounting seat 13 is rotatably connected to a positioning shaft 131. The positioning shafts 131 of the corresponding mounting seats 13 are rotatably connected to support arms 2 4 and two support arms 1 3. Support arms 1 3 and support arms 2 4 can rotate around the positioning shaft 131. The instrument also includes: Simulation detection component: The simulation detection component is set on the connecting toothed disc 51 and the support arm 3 to simulate the actual wear process of the sole; Dust removal and cleaning components: The dust removal and cleaning components are arranged on the mounting plate 11 and the support arm 2 4 to promptly remove the dust generated by the test to ensure the accuracy of the test and the cleanliness of the environment.

[0024] Furthermore, the simulation detection component includes a guide ring 5 fixedly connected to the connecting gear disc 51 and a connecting tube 31 fixedly connected to the end of the support arm 3. An annular groove is formed between the guide ring 5 and the connecting gear disc 51, and a pad 52 is installed in the annular groove. A positioning bolt 511 is provided in the middle of the annular groove, and a fixing nut 512 is threadedly connected to the positioning bolt 511. A mounting groove 121 is provided on the rear side of the limit plate 12, and a tension spring 122 is hingedly installed in the mounting groove 121. The upper end of the tension spring 122 is hinged to the support arm 3. Under the elastic action of the tension spring 122, the support arm 3 maintains a relatively stable position. A mounting sleeve 10 is installed on the side wall of the support arm 3 corresponding to the top of the guide ring 5, and a ball 101 is rotatably clamped at the bottom of the mounting sleeve 10.

[0025] It should be noted that the top of the guide ring 5 is set in an inclined shape, and the end of the ball 101 is against the top of the guide ring 5. Through the inclination of the guide ring 5 and the setting of the tension spring 122, the distance between the grinding wheel 91 and the surface of the sole sample 2 can be changed when the sole sample 2 rotates, simulating the changing state of the force on the sole during human walking, thereby simulating wear conditions that are closer to actual usage scenarios.

[0026] Furthermore, a through-hole matching the positioning bolt 511 is provided in the middle of the sole sample 2. After the sole sample 2 passes through the positioning bolt 511, it is fixed on the pad 52 by the fixing nut 512, which can ensure that the sample will not be displaced during the detection process. The fastening system composed of the positioning bolt 511 and the fixing nut 512, cooperates with the pad 52 in the annular groove, and provides a stable installation basis for the sole sample 2. The interior of the connecting tube 31 is slidingly connected with a sliding sleeve 34, and the interior of the connecting tube 31 is provided with a groove body for the sliding sleeve 34 to slide. A sealing plate 32 is installed on one side of the connecting tube 31, and an adjusting screw 33 is threadedly connected to the sealing plate 32. One end of the adjusting screw 33 is rotatably engaged with the sliding sleeve 34, and the other end extends to the outside of the connecting tube 31. By rotating the adjusting screw 33, the horizontal position of the motor 2 9 and the grinding wheel 91 can be adjusted to perform wear tests on different positions of the sole sample 2, thereby improving the applicability and flexibility of the device.

[0027] A motor 2 9 is installed inside the sliding sleeve 34. The end of the motor 2 9 passes through the side wall of the connecting tube 31 and a grinding wheel 91 is fixedly installed thereon. By grinding the grinding wheel 91 and rotating the sole sample 2, the wear resistance of the sole sample 2 can be tested. The wear resistance of the sole can be measured by measuring the weight of the sole sample 2 before and after the test. The grinding wheel 91 and the pad 52 are both detachable. By replacing the pad 52, sole samples 2 of different thicknesses can be matched. By replacing the grinding wheel 91 of different roughness, wear detection can be performed on different sole materials.

[0028] In this embodiment, the sole sample 2 is pre-punched out and then fixed on the connecting toothed disc 51. After the motor 18 is started, it drives the connecting toothed disc 51 to rotate. Since the sole sample 2 is sleeved on the positioning bolt 511 through the middle through-hole and is fastened to the pad 52 in the annular groove by the fixing nut 512, the sole sample 2 will rotate synchronously with the connecting toothed disc 51. This fixing method ensures that the sole sample 2 remains stable during high-speed rotation and avoids deviation in the test results due to displacement. The operator can adjust the horizontal position of the motor 2 9 and the grinding wheel 91 by rotating the adjusting screw 1 33 according to the test requirements. This enables the grinding wheel 91 to perform targeted wear tests on different areas of the sole sample 2, greatly improving the adaptability of the device to different sole structures and wear test requirements.

[0029] The grinding wheel 91 rotates at high speed driven by the motor 2 9, and the rotating sole sample 2 rubs against the rotating grinding wheel 91 to realize the wear process. By measuring the weight change of the sole sample 2 before and after the test, its wear resistance can be quantified. In addition, the detachable grinding wheel 91 and pad 52 design allows the user to replace the grinding wheel 91 with different roughness according to the characteristics of the sole material, and replace the appropriate pad 52 for the sole sample 2 with different thicknesses, further enhancing the flexibility and professionalism of the device in sole wear resistance testing. When the sole sample 2 rotates, the ball 101 rolls along the inclined guide ring 5. Under the guidance of the guide ring 5, the support arm 3 will produce periodic up and down movement. At this time, the tension spring 122 plays an elastic role. On the one hand, it restricts the movement range of the support arm 3 and maintains its relatively stable position; on the other hand, it works together with the tilting force of the guide ring 5 to make the distance between the grinding wheel 91 installed on the support arm 3 and the surface of the sole sample 2 change regularly. This process simulates the dynamic changes in the pressure on the sole at different gait stages when a person walks. Combined with the rotation of the sole sample 2, it not only simulates the vertical pressure change, but also simulates the friction in different directions through relative sliding, which more comprehensively restores the stress state of the sole during walking, making the detection closer to the actual usage scenario. By cooperating with the guide ring 5 and the tension spring 122 to simulate the force changes on the sole when a person walks, and combining with the rotation of the sole sample 2, not only the vertical pressure changes are simulated, but also the friction in different directions can be simulated through relative sliding. Compared with the traditional single pressure wear detection method, this device can more realistically restore the wear process of the sole in actual use. At the same time, by replacing the grinding wheel 91 and the pad 52 of different specifications, it can adapt to a variety of sole materials and thicknesses, meet the detection needs of different users such as shoe manufacturers and quality inspection agencies for diversified sole products, and expand the application range of the device. Example 2, refer to Figure 2-13, the dust removal and cleaning assembly includes a gear 6, a dust storage box 7, a dust collection head 42 and a vertical plate 111 fixedly connected to the top of the mounting plate 11. The middle part of the gear 6 is fixedly installed with a limit shaft 60, and the bottom of the limit shaft 60 is rotatably connected to the mounting plate 11. The top of the gear 6 is fixedly connected with a bevel gear 1 61, and the gear 6 is meshed with the connecting toothed disc 51. When the connecting toothed disc 51 rotates, the gear 6 will rotate accordingly and drive the limit shaft 60 and the top bevel gear 1 61 to rotate synchronously. The vertical plate 111 is rotatably connected with the mounting shaft 63, and the mounting shaft 63 is fixedly installed with a bevel gear 2 62. The bevel gear 1 61 is meshed with the bevel gear 2 62, and the rotation of the bevel gear 1 61 drives the bevel gear 2 62 and The mounting shaft 63 rotates, and the side wall of the vertical plate 111 is fixedly connected to the L-shaped plate 112. The dust box 7 is fixed to the L-shaped plate 112 by a mounting bolt. The end of the mounting shaft 63 passes through the bottom wall of the dust box 7 and extends into the interior of the dust box 7. The end of the mounting shaft 63 located inside the dust box 7 is fixedly installed with a suction fan blade 64. A one-way valve 72 and a hose 73 are installed at the end of the dust box 7 away from the bevel gear 2 62. The setting of the one-way valve 72 can prevent the dust in the dust box 7 from flowing back, ensuring the unidirectionality and stability of the dust collection process, so that the entire dust removal and cleaning assembly can operate efficiently. When the mounting shaft 63 rotates, the suction fan blade 64 in the dust box 7 is driven to rotate at high speed, generating negative pressure suction, and providing power for the dust collection process.

[0030] Furthermore, the dust collection head 42 is arranged on the support arm 24, and a dust guide platform 421 is provided inside the dust collection head 42 to facilitate guiding the flow of dust. Limit sliders 422 are provided on both sides of the dust collection head 42, and a limit groove 43 for the dust collection head 42 to slide is provided on the support arm 24. The internal rotation of the support arm 24 is connected with an adjusting screw 241, and one end of the adjusting screw 241 is rotatably clamped inside the dust collection head 42. By rotating the adjusting screw 241, the position of the dust collection head 42 can be adjusted to match the wear track of the grinding wheel 91. A quick interface 44 is installed on the top wall of the dust collection head 42 corresponding to the top of the dust guide platform 421, and one end of the hose 73 is plugged into the quick interface 44. Through the quick interface 44, the hose 73 can be quickly connected.

[0031] The inner wall of the dust storage box 7 away from the hose 73 is fixedly connected with a spring 66, and the end of the spring 66 is fixedly connected with an inner baffle 651, which is slidably sleeved on the outside of the mounting shaft 63. One side of the inner baffle 651 is fixedly connected with an incomplete cylinder 65, and the bottom wall of the dust storage box 7 is provided with a through groove matching the incomplete cylinder 65. The end of the incomplete cylinder 65 extends to the outside of the dust storage box 7 and is fixedly connected with an outer baffle 652, facing the side wall of the outer baffle 652 of the dust storage box 7. There are several blocking needles 653 fixedly connected, and the bottom wall of the dust storage box 7 is penetrated by a number of through holes matching the blocking needles 653. These through holes serve as channels for gas discharge. The through holes are distributed on the upper side of the mounting shaft 63, reducing the possibility of dust floating out of the through holes. In the initial state, under the action of the spring 66, the through holes are blocked by the blocking needles 653. When the internal air pressure of the dust storage box 7 reaches a certain level, the airflow will push the blocking needles 653 and the inner baffle 651 to move to open the through holes and complete the pressure relief operation.

[0032] It should be noted that a cleaning door 71 is sealed and hinged on the dust storage box 7, which is convenient for the operator to open the cleaning door 71 regularly to clean the dust stored in the box, ensure that the dust storage box 7 has enough space to accommodate the dust collected subsequently, and maintain the continuous and stable operation of the device. The bottom of the dust suction head 42 is against the surface of the sole sample 2 to maintain the dust suction effect. The bottom of the dust suction head 42 is hollowed out, and the side wall of the dust suction head 42 facing the grinding wheel 91 is provided with an air suction groove, which can absorb the dust on the sole sample 2 on the one hand, and absorb the dust adhered to the grinding wheel 91 on the other hand.

[0033] In this embodiment, when the detection device is running, the motor 18 drives the connecting gear plate 51 to rotate, which serves as the power source of the dust removal system. The rotation of the connecting gear plate 51 drives the gear 6 to rotate synchronously, thereby rotating the limiting shaft 60 fixed in the middle of the gear 6 and the bevel gear 1 61 on the top. The bevel gear 1 61 is engaged with the bevel gear 2 62 on the mounting shaft 63 to transmit power to the mounting shaft 63. As the mounting shaft 63 rotates, the suction fan blades 64 rotate at high speed, stirring the air through the blades, and forming a negative pressure environment in the dust storage box 7. The negative pressure is transmitted to the dust collection head 42 through the hose 73, providing a suction basis for dust collection. The suction fan blade 64 starts to rotate, generating suction (negative pressure area) on its inlet side (the side where the one-way valve 72 is located), and at the same time generating thrust (positive pressure area) on its outlet side (the space inside the box behind the fan blade). Since the negative pressure is generated on the inlet side of the box, the pressure inside the box is less than the external environmental pressure. This pressure difference acts on the one-way valve 72. At this time, the one-way valve 72 is pushed open, and the external air carrying dust is sucked into the dust storage box 7 through the opened one-way valve 72. The dust is trapped and accumulated in the box. As the fan blade continues to rotate, the gas is continuously sucked into the box and pushed to the outlet side. Because the box is sealed The total volume of the box remains basically unchanged (except for the inlet of the one-way valve 72 and the blocked through-hole). The continuously inhaled gas causes the overall air pressure in the box to gradually increase, especially in the area on the outlet side (i.e., the through-hole), where the pressure rises faster and higher. When the pressure in the box is greater than the external ambient pressure, this positive pressure difference acts on the inner side of the needle 653 and the inner baffle 651, causing the through-hole to open. The gas in the positive pressure area in the box (mainly the gas pushed to its outlet side by the fan blades, which is usually relatively "clean" because the dust has been trapped in the front of the box) is squeezed out of the box through the opened through-hole.

[0034] During the period of continuous and stable rotation of the fan blades, the through hole basically remains slightly open (continuously open), the air suction of the fan blades is continuous, resulting in continuous flow of gas into the box, and part of the gas needs to be continuously discharged to maintain dynamic balance. The pressure in the box will stabilize at a level slightly higher than the external environment (this pressure difference can just keep the one-way valve 72 open to absorb dust, while allowing the through hole to exhaust). If the pressure in the box is slightly higher, the inner baffle 651 and the stop needle 653 move farther, the gap is slightly larger, and the exhaust volume increases slightly. If the pressure in the box is slightly lower (such as increased dust accumulation resulting in a decrease in effective volume), the moving distance of the inner baffle 651 and the stop needle 653 decreases, the gap is slightly smaller, and the exhaust volume decreases slightly. This continuous fine-tuning ensures that the air pressure in the box is maintained in a stable state that allows continuous inhalation of dust (the one-way valve 72 remains open) and the box body will not be damaged due to overpressure. Through the cooperation of the stop needle 653 and the through hole, on the one hand, normal ventilation can be achieved, and on the other hand, the probability of dust escaping from the dust storage box 7 through the gap between the stop needle 653 and the through hole can also be reduced.

[0035] When the motor 8 stops running, under the action of the spring 66, the inner baffle 651 will drive the blocking needle 653 to reset through the incomplete cylinder 65 and the outer baffle 652, and re-seal the through hole. On the one hand, it can prevent dust from leaking out and maintain the sealing of the dust storage box 7. On the other hand, during the resetting process, it can also clear the dust that may remain in the through hole, ensure that the exhaust effect can be maintained, and avoid blockage affecting the next operation.

[0036] When the suction fan blades 64 generate negative pressure, under the action of the air pressure difference, the bottom suction groove can directly absorb the dust on the surface of the sole sample 2, while the side wall suction groove can quickly capture the dust splashed or adhered to the surface of the grinding wheel 91 due to high-speed rotation. The bottom suction groove can fully cover the surface of the sole sample 2, and the side wall suction groove is aimed at the surface of the grinding wheel 91 and the surrounding area. The two cooperate with each other to achieve full coverage of the entire wear area, reduce the residence time of dust in the detection area, improve the dust collection efficiency, and ensure the cleanliness of the detection environment; the dust is timely removed by the bottom of the dust suction head 42 and the side wall suction groove, which can avoid dust interference and ensure that the shoes before and after the detection are clean. The state of the sole sample 2 is only affected by the wear of the grinding wheel 91, so that the test results more truly reflect the wear resistance of the sole, and improve the accuracy and reliability of the test results; the dust enters the interior of the dust collector 42 through the suction grooves at the bottom and side walls of the dust collector 42, and the dust guide platform 421 in the dust collector 42 guides the incoming dust so that it enters the hose 73 in an orderly manner, and then the dust is transported to the dust storage box 7 through the hose 73. In addition, the operator can rotate the adjusting screw 241 to drive the dust collector 42 to slide in the limit groove 43 of the support arm 24, and adjust the position of the dust collector 42 to match the wear track of the grinding wheel 91 to ensure that the dust can be collected efficiently. It should be noted that the specific model specifications of the motor, etc. need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0037] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A sole wear resistance testing device, comprising an instrument body (1) and a sole sample (2) punched from a sole, wherein a control panel is provided on the front side of the instrument body (1), a mounting plate (11) is mounted on the instrument body (1), a limit plate (12) is fixedly mounted on the mounting plate (11), a motor (8) is provided inside the instrument body (1), an output end of the motor (8) is fixedly connected to a connecting toothed disc (51), the sole sample (2) is placed on the connecting toothed disc (51), a plurality of mounting seats (13) are fixedly mounted on the rear side of the instrument body (1), a positioning shaft (131) is rotatably connected to the middle of the mounting seat (13), and a support arm (4) and two support arms (3) are rotatably connected to the positioning shaft (131) corresponding to the mounting seat (13), characterized in that: Also includes: Simulation detection component: the simulation detection component is arranged on the connecting toothed disc (51) and the support arm (3); Dust removal and cleaning assembly: The dust removal and cleaning assembly is arranged on the mounting plate (11) and the second support arm (4).

2. A sole wear resistance testing device according to claim 1, characterized in that: The simulation detection component includes a guide ring (5) fixedly connected to the connecting gear disc (51) and a connecting tube (31) fixedly connected to the end of the support arm (3), an annular groove is formed between the guide ring (5) and the connecting gear disc (51), a pad (52) is installed in the annular groove, a positioning bolt (511) is provided in the middle of the annular groove, a fixing nut (512) is threadedly connected to the positioning bolt (511), a mounting groove (121) is provided on the rear side of the limit plate (12), a tension spring (122) is hingedly installed in the mounting groove (121), the upper end of the tension spring (122) is hinged to the support arm (3), a mounting sleeve (10) is installed on the side wall of the support arm (3) corresponding to the top of the guide ring (5), and a ball (101) is rotatably clamped at the bottom of the mounting sleeve (10).

3. A sole wear resistance testing device according to claim 2, characterized in that: A through hole matching the positioning bolt (511) is provided in the middle of the sole sample (2); the sole sample (2) passes through the positioning bolt (511) and is fixed to the pad (52) via a fixing nut (512).

4. A sole wear resistance testing device according to claim 2, characterized in that: The top of the guide ring (5) is arranged in an inclined shape, and the end of the ball (101) abuts against the top of the guide ring (5).

5. A sole wear resistance testing device according to claim 2, characterized in that: The interior of the connecting tube (31) is slidably connected to a sliding sleeve (34), and a groove body for sliding the sliding sleeve (34) is provided inside the connecting tube (31). A sealing plate (32) is installed on one side of the connecting tube (31), and an adjusting screw rod (33) is threadedly connected to the sealing plate (32). One end of the adjusting screw rod (33) is rotatably engaged with the sliding sleeve (34), and the other end extends to the outside of the connecting tube (31). A motor (9) is installed inside the sliding sleeve (34), and the end of the motor (9) passes through the side wall of the connecting tube (31) and a grinding wheel (91) is fixedly installed thereon.

6. A sole wear resistance testing device according to claim 5, characterized in that: The grinding wheel (91) and the pad (52) are both detachably arranged.

7. A sole wear resistance testing device according to claim 1, characterized in that: The dust removal and cleaning assembly comprises a gear (6), a dust storage box (7), a dust collecting head (42), and a vertical plate (111) fixedly connected to the top of the mounting plate (11); a limiting shaft (60) is fixedly installed in the middle of the gear (6); the bottom of the limiting shaft (60) is rotatably engaged with the mounting plate (11); a bevel gear 1 (61) is fixedly connected to the top of the gear (6); the gear (6) is meshedly connected to the connecting toothed disc (51); a mounting shaft (63) is rotatably connected to the vertical plate (111); a bevel gear 2 (61) is fixedly installed on the mounting shaft (63); 2), the bevel gear 1 (61) and the bevel gear 2 (62) are meshed and connected, the side wall of the vertical plate (111) is fixedly connected to the L-shaped plate (112), the dust storage box (7) is fixed to the L-shaped plate (112) by a mounting bolt, the end of the mounting shaft (63) passes through the bottom wall of the dust storage box (7) and extends to the inside of the dust storage box (7), the end of the mounting shaft (63) located inside the dust storage box (7) is fixedly installed with an air suction fan blade (64), and the end of the dust storage box (7) away from the bevel gear 2 (62) is installed with a one-way valve (72) and a hose (73).

8. A sole wear resistance testing device according to claim 7, characterized in that: The dust collecting head (42) is arranged on the second support arm (4), a dust guide platform (421) is arranged inside the dust collecting head (42), and limiting sliders (422) are arranged on both sides of the dust collecting head (42). The second support arm (4) is provided with a limiting groove (43) for the dust collecting head (42) to slide. The second support arm (4) is rotatably connected to the inside of the second support arm (4), and one end of the adjusting screw (41) is rotatably connected to the inside of the dust collecting head (42). A quick interface (44) is installed on the top wall of the dust collecting head (42) corresponding to the top of the dust guide platform (421), and one end of the hose (73) is plug-connected to the quick interface (44).

9. The sole wear resistance testing device according to claim 7, characterized in that: The inner wall of the dust storage box (7) away from the hose (73) is fixedly connected with a spring (66), the end of the spring (66) is fixedly connected with an inner baffle (651), the inner baffle (651) is slidably sleeved on the outside of the mounting shaft (63), one side of the inner baffle (651) is fixedly connected with an incomplete cylinder (65), the bottom wall of the dust storage box (7) is provided with a through groove matching the incomplete cylinder (65), the end of the incomplete cylinder (65) extends to the outside of the dust storage box (7) and is fixedly connected with an outer baffle (652), the side wall of the outer baffle (652) facing the dust storage box (7) is fixedly connected with a plurality of stop needles (653), the bottom wall of the dust storage box (7) is provided with a plurality of through holes matching the stop needles (653), and the through holes are distributed on the upper side of the mounting shaft (63).

10. The sole wear resistance testing device according to claim 7, characterized in that: A cleaning door (71) is sealed and hinged on the dust storage box (7), the bottom of the dust suction head (42) is against the surface of the sole sample (2), the bottom of the dust suction head (42) is hollowed out, and a suction groove is provided on the side wall of the dust suction head (42) facing the grinding wheel (91).

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