A testing device for the abrasion resistance of security shoe soles integrating mechanical sensing technology

Abstract

This invention relates to the field of abrasion resistance testing technology, specifically to a security shoe sole abrasion resistance testing device integrating mechanical sensing technology. The device includes a base, a protective frame, and a slide. The protective frame is mounted on top of the base and houses a drive mechanism connected to a grinding disc and a pressure sensor. The slide slides horizontally on the base, and a reciprocating mechanism is mounted on the base, linked to both the slide and the drive mechanism. A dust extraction mechanism is also mounted on the base. This invention uses the drive mechanism to synchronously rotate the pressure sensor and grinding disc, intermittently moving them vertically downwards. Simultaneously, the reciprocating mechanism drives the shoe mold to move horizontally back and forth, forming a composite motion mode of rotational grinding and horizontal sliding. This results in a multi-directional friction state between the grinding disc and the shoe sole sample that more closely resembles actual walking conditions. The pressure sensor monitors changes in normal pressure in real time, thereby obtaining wear data that more closely reflects real-world usage scenarios.

Description

Technical Field

[0001] This invention relates to the field of abrasion resistance testing technology, specifically to a device for testing the abrasion resistance of security shoe soles that integrates mechanical sensing technology. Background Technology

[0002] As a crucial component of foot protection equipment, the abrasion resistance of the sole material in security shoes directly impacts the wearer's walking safety and protective reliability in complex working environments. During actual use, security shoes not only bear the normal pressure generated by the wearer's own weight but also cope with multi-directional friction and shearing effects from walking, turning, and braking. The wear pattern manifests as a combination of rotational friction, horizontal slippage, and their combined effects. Therefore, testing and evaluating the abrasion resistance of security shoe soles requires simulating these complex working conditions to obtain wear data that reflects real-world usage behavior.

[0003] Currently, most existing shoe sole abrasion resistance testing devices employ a single-motion abrasion method, such as only rotary abrasion or only linear reciprocating friction, which makes it difficult to simultaneously reproduce the multi-directional relative motion characteristics between the shoe sole and the ground during walking. Furthermore, some devices lack real-time monitoring of normal pressure during testing, failing to acquire dynamic information on changes in mechanical parameters during wear. This results in test results that only reflect material mass loss or appearance changes, making it difficult to establish a correlation between wear behavior and mechanical conditions, thus limiting the guiding value of test data for shoe sole structure optimization and material selection.

[0004] Regarding environmental control during testing, a large amount of rubber or polyurethane abrasion debris is generated during shoe sole abrasion tests. Some fine particles are suspended in the air due to the heat from grinding, causing dust pollution. Existing devices have shortcomings in debris collection and operational protection. Open or semi-open structures easily lead to debris splashing and spreading, affecting not only the cleanliness of the testing environment but also posing a potential risk to the occupational health of operators. Furthermore, the rigid contact between the grinding disc and the shoe sole sample easily generates impact vibrations during pressure loading, causing localized stress concentration and deviating the wear area from the normal contact state, affecting the stability and repeatability of the test results. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for the abrasion resistance of security shoe soles that integrates mechanical sensing technology, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A safety shoe sole abrasion resistance testing device integrating mechanical sensing technology includes a housing, a protective frame, and a slide. The protective frame is installed on the top of the housing to prevent abrasion debris from flying. It also includes a grinding disc, a pressure sensor, and a shoe mold. The protective frame is equipped with a drive mechanism, which is connected to the grinding disc and the pressure sensor respectively. When the drive mechanism is running, the pressure sensor and the grinding disc will rotate synchronously and move vertically downward intermittently. The slide is slidably mounted on the base in a horizontal direction. The base is equipped with a reciprocating mechanism, which is linked to both the slide and the drive mechanism. The shoe mold is located below the polishing disc and is mounted on the slide via an elastic component. The supporting surface of the shoe mold faces the polishing disc. During operation of the drive mechanism, the reciprocating mechanism drives the shoe mold to move horizontally back and forth via the slide and the elastic component. The housing is equipped with a dust collection mechanism, which can extract and collect the abrasive debris inside the protective frame.

[0007] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The drive mechanism includes a sleeve, a drive shaft, and an I-shaped block, with the sleeve vertically rotatably mounted on the top of the protective frame; The drive shaft is vertically slidably mounted on the protective frame and can rotate freely. The top end of the drive shaft extends into the sleeve and slides into it.

[0008] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: A motor is installed on the top of the protective frame, and the output end of the motor is coaxially connected to the top of the sleeve. The bottom end of the drive shaft is provided with a square box, the top of the I-shaped block is vertically slidably engaged with the square box, and the bottom of the I-shaped block is connected to the top of the grinding disc.

[0009] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The pressure sensor is installed on the inner top of the square box, and the detection end abuts against the top of the I-shaped block; The outer wall of the drive shaft is provided with a protrusion along its length, and the inner wall of the sleeve is provided with a groove along its length, and the protrusion is slidably fitted into the groove.

[0010] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The drive mechanism also includes a rotating shaft, a bearing seat, and a collar, with the rotating shaft vertically rotatably disposed inside the protective frame; The bearing seat is rotatably sleeved on the outer wall of the drive shaft, and the collar is slidably sleeved on the outer wall of the shaft. The bearing seat and the collar are connected by a crossbar.

[0011] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: A small pulley is coaxially arranged on the outer wall of the sleeve, and a large pulley is coaxially arranged on the outer wall of the rotating shaft; The small pulley and the large pulley are connected by a toothed belt, and a drive bevel gear is coaxially provided at the bottom end of the rotating shaft.

[0012] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The outer wall of the rotating shaft is uniformly provided with multiple spiral grooves and multiple arc grooves from top to bottom. The multiple spiral grooves and multiple arc grooves are staggered and interconnected. The arc grooves are along the circumferential direction of the rotating shaft. The inner wall of the collar is fitted with rolling steel balls, which are also fitted into the spiral groove. When the shaft rotates, the steel balls and the spiral groove cooperate with each other, causing the collar to move vertically downward. When the steel balls slide from the spiral groove into the arc groove, the collar will remain stationary.

[0013] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The elastic component includes a support plate, a guide frame, and a pressure spring. The guide frame is disposed on the slide, the support plate is vertically slidably disposed on the guide frame, and the shoe mold is mounted on the support plate. The two ends of the pressure spring abut against the bottom of the support plate and the top of the carriage, respectively, so that the support plate is located at the top of the guide frame.

[0014] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The reciprocating mechanism includes a rotating rod and a collar. The rotating rod is horizontally rotatably mounted on the housing. The collar is slidably mounted on the outer wall of the rotating rod and connected to the slide frame. One end of the rotating rod is coaxially provided with a driven bevel gear that meshes with the driving bevel gear. The outer wall of the rotating rod is provided with an annular track groove along its length, and the inner wall of the collar is fitted with rolling balls, which are also fitted into the annular track groove.

[0015] The security shoe sole abrasion resistance testing device integrating mechanical sensing technology as described above: The dust collection mechanism includes a blower head, a duct, and a fan. The blower head is mounted on the housing and communicates with the interior of the protective frame. The fan is installed inside the housing. The two ends of the duct are respectively connected to the air head and the air inlet of the fan. The inside of the housing is provided with a storage box, and the air outlet of the fan is connected to the storage box.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The drive mechanism causes the pressure sensor and the grinding disc to rotate synchronously and move vertically downward intermittently. At the same time, the reciprocating mechanism drives the shoe mold to move horizontally back and forth, forming a compound motion mode of rotational grinding and horizontal sliding. This makes the grinding disc and the shoe sole sample generate a multi-directional friction state that is closer to the actual walking conditions. The pressure sensor monitors the change of normal pressure in real time to ensure the synchronous acquisition of mechanical parameters during the test, thereby obtaining wear data that is closer to the real use scenario. The shoe mold is mounted on the slide via elastic components, providing vertical cushioning during horizontal reciprocating motion. Combined with the closed structure of the protective frame and the dust collection mechanism, it forms a continuous protection system that includes dynamic cushioning, debris blocking, and dust collection. The elastic components absorb vertical impact vibrations, preventing local overload caused by rigid contact. The protective frame inhibits the spread of abrasive debris, and the dust collection mechanism actively sucks up suspended particles. The three work together to maintain the cleanliness of the testing environment and operational safety. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a security shoe sole abrasion resistance testing device integrating mechanical sensing technology; Figure 2 A schematic diagram showing the removal of the housing in a security shoe sole abrasion resistance testing device integrating mechanical sensing technology. Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 A cross-sectional view of the protective frame, sleeve, square box, bearing, and collar of a security shoe sole abrasion resistance testing device with integrated mechanical sensing technology, after removing the base. Figure 5 for Figure 4 Enlarged view of point B in the image; Figure 6 for Figure 4 Enlarged view of point C in the image; Figure 7 A schematic diagram showing the disassembled drive mechanism in a security shoe sole abrasion resistance testing device integrating mechanical sensing technology; Figure 8 A schematic diagram showing the disassembled shaft and collar in a security shoe sole abrasion resistance testing device integrating mechanical sensing technology; Figure 9 A cross-sectional view of the protective frame, slide, tray, guide frame, and collar of a security shoe sole abrasion resistance testing device with integrated mechanical sensing technology, after removing the base box; Figure 10 for Figure 9 Enlarged view of point D in the image; Figure 11 A schematic diagram showing the disassembly of the rotating rod and collar in a security shoe sole abrasion resistance testing device integrating mechanical sensing technology; Figure 12 This is a cross-sectional view of the housing and protective frame in a security shoe sole abrasion resistance testing device integrating mechanical sensing technology.

[0018] In the diagram: 1. Box base; 2. Protective frame; 3. Slide; 4. Grinding disc; 5. Pressure sensor; 6. Shoe mold; 7. Sleeve; 701. Groove; 8. Drive shaft; 801. Protruding column; 9. I-shaped block; 10. Motor; 11. Square box; 12. Rotating shaft; 1201. Spiral groove; 1202. Arc groove; 13. Shaft seat; 14. Collar; 15. Crossbar; 16. Small pulley; 17. Large pulley; 18. Toothed belt; 19. Steel ball; 20. Driving bevel gear; 21. Support plate; 22. Guide frame; 23. Pressure spring; 24. Rotating rod; 2401. Annular track groove; 25. Collar; 26. Ball bearing; 27. Driven bevel gear; 28. Fan head; 29. ​​Conduit; 30. Fan; 31. Storage box. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Please see Figure 1-12 As an embodiment of the present invention, a safety shoe sole abrasion resistance testing device integrating mechanical sensing technology includes a housing 1, a protective frame 2 and a slide 3. The protective frame 2 is installed on the top of the housing 1 to prevent abrasion debris from splashing. It also includes a grinding disc 4, a pressure sensor 5, and a shoe mold 6. The protective frame 2 is equipped with a drive mechanism, which is connected to the grinding disc 4 and the pressure sensor 5 respectively. When the drive mechanism is running, the pressure sensor 5 and the grinding disc 4 will rotate synchronously and move vertically downward intermittently. The slide 3 is slidably mounted on the base 1 in a horizontal direction. The base 1 is provided with a reciprocating mechanism, which is linked to the slide 3 and the drive mechanism. The shoe mold 6 is located below the polishing disc 4 and is mounted on the slide 3 via an elastic component. The supporting surface of the shoe mold 6 faces the polishing disc 4. During the operation of the drive mechanism, the reciprocating mechanism drives the shoe mold 6 to move horizontally back and forth via the slide 3 and the elastic component. The housing 1 is equipped with a dust collection mechanism, which can collect and absorb the abrasive particles inside the protective frame 2.

[0021] In this embodiment, the drive mechanism serves as the core power source of the device, and its output acts simultaneously on the pressure sensor 5 and the grinding disc 4. When the drive mechanism is running, it first drives the grinding disc 4 and the pressure sensor 5 to rotate synchronously, forming a continuous circumferential friction motion. At the same time, the drive mechanism controls the grinding disc 4 and the pressure sensor 5 to move vertically downward intermittently according to a set timing sequence, so that the grinding disc 4 gradually approaches and applies pressure to the shoe sole sample in a rotating state. During this process, the pressure sensor 5 collects the normal pressure in real time, realizing the synchronous monitoring of mechanical parameters. The reciprocating mechanism converts the continuous rotational motion from the drive mechanism into the horizontal reciprocating linear motion of the slide 3. The slide 3 slides horizontally along the box base 1, and the shoe mold 6 is supported on it by the elastic component, thereby transmitting the horizontal reciprocating motion to the shoe sole sample. As a result, the shoe sole sample reciprocates in the horizontal direction, which is superimposed with the rotational motion of the grinding disc 4 to form a compound friction condition. The shoe mold 6 is mounted on the slide 3 via an elastic component. The elastic component is compressible in the vertical direction. When the grinding disc 4 presses down intermittently, the elastic component absorbs the impact load in the vertical direction, so that the sole sample and the grinding disc 4 form a flexible contact. At the same time, the elastic component maintains the continuity of force transmission in the horizontal direction, ensuring that the reciprocating motion of the slide 3 effectively drives the horizontal displacement of the sole sample. The buffering effect of the elastic component is coupled with the horizontal motion of the slide 3 and the rotational pressing motion of the grinding disc 4 to form a multi-directional friction condition that is close to the actual walking state. During the aforementioned composite motion, the friction between the shoe sole sample and the grinding disc 4 continuously generates abrasive debris. The protective frame 2 surrounds the grinding area, forming a physical barrier against the splashed solid abrasive debris. The dust collection mechanism is installed on the base 1, which performs negative pressure suction on the internal space of the protective frame 2 to actively collect the suspended fine dust. The generation, splashing, and suction of abrasive debris form a continuous temporal response. The passive barrier of the protective frame 2 and the active collection of the dust collection mechanism work together to maintain the cleanliness of the testing environment and the safety of operation.

[0022] As a further embodiment of the present invention, the driving mechanism includes a sleeve 7, a driving shaft 8 and an I-shaped block 9, wherein the sleeve 7 is vertically rotatably disposed on the top of the protective frame 2; The drive shaft 8 is vertically slidably mounted on the protective frame 2 and can rotate freely. The top end of the drive shaft 8 extends into the sleeve 7 and slides into it. A motor 10 is installed on the top of the protective frame 2, and the output end of the motor 10 is coaxially connected to the top of the sleeve 7. The bottom end of the drive shaft 8 is provided with a square box 11, the top of the I-shaped block 9 is vertically slidably engaged with the square box 11, and the bottom of the I-shaped block 9 is connected to the top of the grinding disc 4. The pressure sensor 5 is installed on the inner top of the square box 11, and the detection end abuts against the top of the I-shaped block 9; The outer wall of the drive shaft 8 is provided with a protrusion 801 along its length direction, and the inner wall of the sleeve 7 is provided with a groove 701 along its length direction. The protrusion 801 is slidably fitted into the groove 701.

[0023] In this embodiment, please refer to Figure 3 , Figure 5 and Figure 7 The motor 10 is installed on the top of the protective frame 2, and its output end is coaxially connected to the top of the sleeve 7. After the motor 10 is started, the rotational power is directly transmitted to the sleeve 7, so that the sleeve 7 keeps rotating vertically on the top of the protective frame 2. The inner wall of the sleeve 7 is provided with a groove 701 along the length direction, and the outer wall of the drive shaft 8 is provided with a corresponding protrusion 801. The protrusion 801 is slidably fitted into the groove 701. This fitting structure makes the sleeve 7 and the drive shaft 8 form a rigid constraint in the circumferential direction. The rotation of the sleeve 7 is transmitted to the drive shaft 8 through the lateral pushing of the groove 701 on the protrusion 801. The drive shaft 8 rotates synchronously. At the same time, the protrusion 801 can slide along the length direction of the groove 701, so that the drive shaft 8 has the freedom to slide vertically relative to the sleeve 7 while maintaining synchronous rotation. The drive shaft 8 is vertically slidably mounted on the protective frame 2 and can rotate freely. Its top end extends into the sleeve 7 and slides with it. The rotational motion of the drive shaft 8 is transmitted downward to the square box 11 at its bottom end. The square box 11 and the top of the I-shaped block 9 form a vertical sliding fit. The bottom of the I-shaped block 9 is connected to the top of the grinding disc 4, thereby ultimately transmitting the rotational motion to the grinding disc 4, causing the grinding disc 4 to rotate continuously. During the continuous rotation of the sleeve 7, the mechanical structure applies an intermittent vertical downward thrust to the drive shaft 8. The drive shaft 8 slides down along the groove 701 on the inner wall of the sleeve 7. This vertical displacement is transmitted to the I-shaped block 9 through the square box 11, which in turn drives the grinding disc 4 to move down vertically intermittently. During the downward movement, the protrusion 801 slides continuously along the groove 701. The rotation linkage is not affected by the vertical displacement. The grinding disc 4 gradually approaches and applies pressure to the shoe sole sample while rotating. Pressure sensor 5 is installed at the top inside the square box 11, with its detection end abutting against the top of the I-shaped block 9. When the grinding disc 4 is pressed or applied to the shoe sole sample, the reaction force is transmitted to the detection end of pressure sensor 5 through the I-shaped block 9. Pressure sensor 5 collects the normal pressure signal in real time. Since the I-shaped block 9 and the square box 11 are in a vertical sliding fit, the pressure transmission path remains straight, ensuring the accuracy of pressure monitoring. At the same time, this sliding fit does not affect the transmission of rotational motion, so that pressure monitoring and rotational motion are independent and synchronous.

[0024] As a further embodiment of the present invention, the driving mechanism further includes a rotating shaft 12, a bearing 13, and a collar 14, wherein the rotating shaft 12 is vertically rotatably disposed inside the protective frame 2; The bearing seat 13 is rotatably sleeved on the outer wall of the drive shaft 8, and the collar 14 is slidably sleeved on the outer wall of the rotating shaft 12. The bearing seat 13 and the collar 14 are connected by a crossbar 15. A small pulley 16 is coaxially arranged on the outer wall of the sleeve 7, and a large pulley 17 is coaxially arranged on the outer wall of the rotating shaft 12. The small pulley 16 and the large pulley 17 are connected by a toothed belt 18, and the bottom end of the rotating shaft 12 is coaxially provided with a drive bevel gear 20. The outer wall of the rotating shaft 12 is uniformly provided with a plurality of spiral grooves 1201 and a plurality of arc grooves 1202 from top to bottom. The plurality of spiral grooves 1201 and the plurality of arc grooves 1202 are staggered and interconnected. The arc grooves 1202 are along the circumferential direction of the rotating shaft 12. The inner wall of the collar 14 is fitted with a rolling steel ball 19, which is also fitted into the spiral groove 1201. When the shaft 12 rotates, the steel ball 19 and the spiral groove 1201 cooperate with each other, causing the collar 14 to move vertically downward. When the steel ball 19 slides from the spiral groove 1201 into the arc groove 1202, the collar 14 will remain stationary.

[0025] In this embodiment, please refer to Figure 6 and Figure 8 When the sleeve 7 rotates, the small pulley 16 drives the large pulley 17 through the toothed belt 18, so that the rotating shaft 12 rotates synchronously and continuously inside the protective frame 2. The bottom end of the rotating shaft 12 is coaxially provided with a drive bevel gear 20, which transmits the rotational power of the rotating shaft 12 outward to drive the reciprocating mechanism. The outer wall of the rotating shaft 12 has multiple spiral grooves 1201 and multiple arc grooves 1202 distributed alternately from top to bottom. The beginning and end of each groove are interconnected. The arc grooves 1202 extend circumferentially along the rotating shaft 12. The collar 14 is slidably sleeved on the outer wall of the rotating shaft 12. The inner wall of the collar 14 is rolled and embedded with steel balls 19. The steel balls 19 are also embedded in the spiral grooves 1201 on the outer wall of the rotating shaft 12. When the rotating shaft 12 rotates, the spiral sidewall of the spiral groove 1201 applies an axial thrust to the steel balls 19, forcing the collar 14 to slide vertically downward along the rotating shaft 12. The collar 14 is connected to the bearing seat 13 via the crossbar 15. The bearing seat 13 is rotatably sleeved on the outer wall of the drive shaft 8. When the collar 14 moves vertically downward, the bearing seat 13 moves synchronously downward through the crossbar 15. The bearing seat 13 then drives the drive shaft 8 to move vertically downward. Since the bearing seat 13 and the drive shaft 8 are in a rotational fit, the axial movement of the bearing seat 13 can be transmitted to the drive shaft 8 without interfering with the rotational movement of the drive shaft 8. When the drive shaft 8 moves vertically downward, the square box 11, the I-shaped block 9 and the grinding disc 4 at its bottom end move vertically downward synchronously, so that the rotating grinding disc 4 gradually approaches and applies pressure to the shoe sole sample. As the shaft 12 continues to rotate, the steel ball 19 rolls along the spiral groove 1201 to the end of the groove and then slides into the adjacent arc groove 1202. Since the arc groove 1202 extends circumferentially along the shaft 12, the steel ball 19 only rolls circumferentially in the arc groove 1202 without generating axial displacement. The collar 14 therefore stops moving downward and remains stationary. When the collar 14 is stationary, the drive shaft 8 and the grinding disc 4 are kept at the current vertical height by the crossbar 15 and the bearing seat 13. The grinding disc 4 only maintains rotation and no longer moves downward. When the shaft 12 continues to rotate, the steel ball 19 re-enters the next spiral groove 1201 from the other end of the arc groove 1202, and the collar 14 moves vertically downward again. This cycle repeats, realizing the intermittent vertical downward pressure of the grinding disc 4 during continuous rotation.

[0026] As a further embodiment of the present invention, the elastic component includes a support plate 21, a guide frame 22 and a pressure spring 23. The guide frame 22 is disposed on the slide 3, the support plate 21 is vertically slidably disposed on the guide frame 22, and the shoe mold 6 is mounted on the support plate 21. The two ends of the pressure spring 23 abut against the bottom of the support plate 21 and the top of the slide 3, respectively, so that the support plate 21 is located on the top of the guide frame 22.

[0027] In this embodiment, please refer to Figure 10 When the drive mechanism drives the grinding disc 4 to rotate and intermittently move vertically downward, the grinding disc 4 gradually approaches and eventually contacts the sole sample on the shoe mold 6. The grinding disc 4 continues to move downward and apply pressure. The reaction force is transmitted to the support plate 21 through the shoe mold 6. The support plate 21 slides vertically downward along the guide frame 22 and compresses the pressure spring 23. The pressure spring 23 generates an increasing elastic restoring force during the compression process. This restoring force balances the downward pressure of the grinding disc 4, so that the sole sample and the grinding disc 4 form a flexible contact rather than a rigid collision, effectively absorbing the impact vibration in the vertical direction and avoiding the distortion of the contact state caused by local stress concentration. When the grinding disc 4 is raised, the downward pressure acting on the support plate 21 is released, the pressure spring 23 releases its compressed energy, and pushes the support plate 21 vertically upward along the guide frame 22 to reset, so that the shoe mold 6 returns to the initial support position at the top of the guide frame 22, preparing for the next round of contact pressure.

[0028] As a further embodiment of the present invention, the reciprocating mechanism includes a rotating rod 24 and a collar 25. The rotating rod 24 is horizontally rotatably mounted on the housing 1. The collar 25 is slidably mounted on the outer wall of the rotating rod 24 and connected to the slide 3. One end of the rotating rod 24 is coaxially provided with a driven bevel gear 27 that meshes with the driving bevel gear 20. The outer wall of the rotating rod 24 is provided with an annular track groove 2401 along its length direction, and the inner wall of the collar 25 is fitted with rolling balls 26, which are also fitted into the annular track groove 2401.

[0029] In this embodiment, please refer to Figure 10 and Figure 11 The rotating rod 24 is horizontally rotatably mounted on the housing 1. One end of the rod is coaxially mounted with a driven bevel gear 27. The driven bevel gear 27 meshes with the driving bevel gear 20 at the bottom of the rotating shaft 12 in the drive mechanism. When the drive mechanism is running, the rotational power of the rotating shaft 12 is transmitted to the driven bevel gear 27 through the driving bevel gear 20, so that the rotating rod 24 rotates horizontally on the housing 1 continuously. The outer wall of the rotating rod 24 is provided with an annular track groove 2401 along its length direction. The inner wall of the collar 25 is fitted with rolling balls 26, which are also fitted into the annular track groove 2401. The annular track groove 2401 extends along the length direction of the rotating rod 24, and its center line is a closed spatial curve. When the rotating rod 24 rotates, the groove wall of the annular track groove 2401 applies an axial thrust to the embedded balls 26. Since the collar 25 is connected to the slide 3, the horizontal sliding constraint of the slide 3 along the housing 1 restricts the circumferential movement freedom of the collar 25. Under the guidance of the profile of the annular track groove 2401, the balls 26 are forced to move axially along the rotating rod 24, thereby causing the collar 25 and the slide 3 to move back and forth in the horizontal direction. The horizontal reciprocating motion of the slide 3 is transmitted to the shoe mold 6 through the elastic component, which causes the shoe sole sample to slide horizontally relative to the rotating grinding disc 4, and the motion is superimposed with the rotational motion of the grinding disc 4 to form a compound friction condition. The annular track groove 2401 is a closed curve. After the ball 26 runs along the annular track groove 2401 for one revolution, it returns to the starting axial position, forming a continuous cycle. When the rotating rod 24 continues to rotate, the ball 26 rolls back and forth in the annular track groove 2401, so that the collar 25 and the slide 3 maintain continuous horizontal reciprocating motion.

[0030] As a further embodiment of the present invention, the dust collection mechanism includes a blower 28, a duct 29 and a fan 30. The blower 28 is disposed on the housing 1 and communicates with the interior of the protective frame 2, and the fan 30 is installed inside the housing 1. The two ends of the duct 29 are respectively connected to the air inlet of the fan head 28 and the air inlet of the fan 30. The inside of the housing 1 is provided with a storage box 31, and the air outlet of the fan 30 is connected to the storage box 31.

[0031] In this embodiment, please refer to Figure 12 The fan 30 is installed inside the housing 1. Its air inlet is connected to the fan head 28 through the duct 29. After the fan 30 is started, the impeller rotates at high speed, forming a negative pressure zone at the air inlet of the fan 30. This negative pressure is transmitted to the fan head 28 through the duct 29, causing the opening end of the fan head 28 to generate a continuous suction airflow. The blower 28 is set on the box base 1, and its opening end is connected to the internal space of the protective frame 2. The protective frame 2 surrounds the outer perimeter of the grinding area. The grinding debris generated by the friction between the grinding disc 4 and the shoe sole sample is splashed or suspended inside the protective frame 2 under the action of centrifugal force and airflow disturbance. Under the action of negative pressure, the blower 28 continuously draws the dust-laden airflow inside the protective frame 2, and sucks the splashed solid grinding debris and suspended fine dust into the opening of the blower 28. The two ends of the duct 29 are connected to the air inlet of the fan 28 and the air inlet of the fan 30, respectively, forming a closed air transport channel. The dust-laden airflow enters the duct 29 from the air inlet 28 and flows along the duct 29 towards the fan 30 under the negative pressure drive of the fan 30. The closed structure of the duct 29 prevents the dust-laden airflow from leaking to the external environment during the transmission process, ensuring that the grinding debris and dust are concentrated and transported to the subsequent processing stage. The air outlet of the fan 30 is connected to the storage box 31. The dust-laden airflow is pressurized by the fan 30 and discharged into the storage box 31 from the air outlet. The storage box 31 is set inside the box base 1. Its volume provides a buffer space for the airflow. The airflow speed is reduced in the storage box 31. The suspended dust particles settle to the bottom of the storage box 31 due to gravity and the deceleration of the airflow. Clean air escapes from the exhaust structure or gaps of the storage box 31, realizing gas-solid separation and centralized collection of dust.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety shoe sole abrasion resistance testing device integrating mechanical sensing technology, comprising a base (1), a protective frame (2), and a slide (3), characterized in that, The protective frame (2) is installed on the top of the housing (1) to prevent grinding debris from splashing. It also includes a grinding disc (4), a pressure sensor (5) and a shoe mold (6). The protective frame (2) is equipped with a drive mechanism. The drive mechanism is connected to the grinding disc (4) and the pressure sensor (5) respectively. When the drive mechanism is running, the pressure sensor (5) and the grinding disc (4) will rotate synchronously and move vertically downward intermittently. The slide (3) is slidably mounted on the base (1) in the horizontal direction. The base (1) is provided with a reciprocating mechanism, which is linked to the slide (3) and the drive mechanism respectively. The shoe mold (6) is located below the polishing disc (4) and is mounted on the slide (3) through an elastic component. The supporting surface of the shoe mold (6) faces the polishing disc (4). During the operation of the drive mechanism, the reciprocating mechanism drives the shoe mold (6) to move horizontally back and forth through the slide (3) and the elastic component. The housing (1) is equipped with a dust collection mechanism, which can collect and extract the abrasive debris inside the protective frame (2). The drive mechanism includes a sleeve (7), a drive shaft (8), and an I-shaped block (9). The sleeve (7) is vertically rotatably mounted on the top of the protective frame (2). The drive shaft (8) is vertically slidably mounted on the protective frame (2) and can rotate freely. The top end of the drive shaft (8) extends into the sleeve (7) and slides into each other. The drive mechanism also includes a rotating shaft (12), a bearing seat (13), and a collar (14), wherein the rotating shaft (12) is vertically rotatably disposed inside the protective frame (2); The bearing seat (13) is rotatably sleeved on the outer wall of the drive shaft (8), and the collar (14) is slidably sleeved on the outer wall of the rotating shaft (12). The bearing seat (13) and the collar (14) are connected by a crossbar (15). A small pulley (16) is coaxially arranged on the outer wall of the sleeve (7), and a large pulley (17) is coaxially arranged on the outer wall of the rotating shaft (12). The small pulley (16) and the large pulley (17) are connected by a toothed belt (18), and the bottom end of the rotating shaft (12) is coaxially provided with a drive bevel gear (20). The outer wall of the rotating shaft (12) is uniformly provided with a plurality of spiral grooves (1201) and a plurality of arc grooves (1202) from top to bottom. The plurality of spiral grooves (1201) and the plurality of arc grooves (1202) are staggered and connected to each other. The arc grooves (1202) are along the circumferential direction of the rotating shaft (12). The inner wall of the collar (14) is fitted with a rolling steel ball (19), which is also fitted in the spiral groove (1201). When the shaft (12) rotates, the steel ball (19) and the spiral groove (1201) cooperate with each other, causing the collar (14) to move vertically downward. When the steel ball (19) slides from the spiral groove (1201) into the arc groove (1202), the collar (14) will remain stationary.

2. The security shoe sole abrasion resistance testing device integrating mechanical sensing technology according to claim 1, characterized in that, A motor (10) is installed on the top of the protective frame (2), and the output end of the motor (10) is coaxially connected to the top of the sleeve (7); The bottom end of the drive shaft (8) is provided with a square box (11), the top of the I-shaped block (9) is vertically slidably engaged with the square box (11), and the bottom of the I-shaped block (9) is connected to the top of the grinding disc (4).

3. The security shoe sole abrasion resistance testing device integrating mechanical sensing technology according to claim 2, characterized in that, The pressure sensor (5) is installed on the inner top of the square box (11), and the detection end abuts against the top of the I-shaped block (9); The outer wall of the drive shaft (8) is provided with a protrusion (801) along its length direction, and the inner wall of the sleeve (7) is provided with a groove (701) along its length direction. The protrusion (801) is slidably fitted into the groove (701).

4. The security shoe sole abrasion resistance testing device integrating mechanical sensing technology according to claim 1, characterized in that, The elastic component includes a support plate (21), a guide frame (22) and a pressure spring (23). The guide frame (22) is disposed on the slide (3). The support plate (21) is vertically slidably disposed on the guide frame (22). The shoe mold (6) is installed on the support plate (21). The two ends of the pressure spring (23) abut against the bottom of the support plate (21) and the top of the slide (3) respectively, so that the support plate (21) is located on the top of the guide frame (22).

5. The security shoe sole abrasion resistance testing device integrating mechanical sensing technology according to claim 1, characterized in that, The reciprocating mechanism includes a rotating rod (24) and a collar (25). The rotating rod (24) is horizontally rotatably mounted on the housing (1). The collar (25) is slidably mounted on the outer wall of the rotating rod (24) and connected to the slide (3). One end of the rotating rod (24) is coaxially provided with a driven bevel gear (27) that meshes with the driving bevel gear (20). The outer wall of the rotating rod (24) is provided with an annular track groove (2401) along its length direction, and the inner wall of the collar (25) is fitted with a ball (26) which is also fitted with the annular track groove (2401).

6. The security shoe sole abrasion resistance testing device integrating mechanical sensing technology according to claim 1, characterized in that, The dust collection mechanism includes a blower (28), a duct (29) and a fan (30). The blower (28) is mounted on the housing (1) and communicates with the interior of the protective frame (2). The fan (30) is installed inside the housing (1). The two ends of the duct (29) are respectively connected to the air inlet of the air head (28) and the air inlet of the fan (30). The storage box (31) is provided inside the box base (1), and the air outlet of the fan (30) is connected to the storage box (31).

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