A dynamic simulation-based tire anti-penetration performance testing system and method

Abstract

This invention provides a tire puncture resistance testing system and method based on dynamic simulation, belonging to the field of tire performance testing technology. The testing system includes a base plate, uprights, upper plate, side frame, control system, dynamic pressure simulation mechanism, tire puncture simulation mechanism, and testing system. A cylinder drives a rubber pressure plate to apply load to the test tire, simulating actual driving conditions. A double-screw linkage lifting structure adjusts the tire height to ensure alignment accuracy. A third motor drives a second screw to move a sharp nail horizontally to achieve puncture. The testing system integrates pressure, displacement, and acceleration sensors to simultaneously collect force, depth, and impact response data during the puncture process. The control system analyzes the data to generate a dynamic performance curve and evaluate puncture resistance. This invention can realistically reproduce the dynamic puncture process of a tire under load, improving the accuracy and reliability of the test.

Description

Technical Field

[0001] This invention belongs to the field of tire performance testing technology, specifically relating to a tire anti-penetration performance testing system and method based on dynamic simulation. Background Technology

[0002] Currently, tires, as a critical component of vehicles, are directly affected by the risk of being punctured by sharp objects under complex road conditions, impacting driving safety and tire lifespan. To assess tire puncture resistance, relevant testing equipment simulates the impact or puncture process of sharp objects on the tire to obtain its mechanical response characteristics. Such equipment typically includes a support structure, tire clamping and loading mechanisms, and a sharp object actuation device, designed to test the tire's puncture behavior under specific operating conditions.

[0003] However, accurately simulating the dynamic puncture process of a tire under actual load and ensuring the coordination and positioning accuracy of each component during testing remain key factors in improving detection reliability. In existing technologies, some detection devices adjust tire height or move the puncture component through independent drive mechanisms, but there is still room for improvement in optimizing the relative positional relationships and synergistic effects between the moving structures. For example, rationally defining the spatial layout of the lifting mechanism and the puncture drive component, provided that this configuration improves the synchronization and stability of the overall movement, helps reduce structural off-center loading, and improves test repeatability; setting the sensor installation position and force transmission path, if it can achieve synchronous acquisition and accurate correspondence of multiple physical quantity signals, can more comprehensively reflect the dynamic response characteristics of the tire at the moment of puncture. Summary of the Invention

[0004] The purpose of this invention is to provide a tire puncture resistance testing system and method based on dynamic simulation. This aims to solve the problems in existing technologies, such as the difficulty in realistically simulating the dynamic puncture process of a tire encountering a sharp object under vehicle load, and the poor repeatability of test results due to asynchronous acquisition of multiple physical quantity data and insufficient coordination of structural motion during testing. By integrating pressure simulation, linked lifting, precise puncture drive, and multi-sensor collaborative monitoring, a high-precision and high-stability dynamic evaluation of tire puncture resistance performance is achieved.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A tire anti-penetration performance testing system based on dynamic simulation includes: Base plate; An upright post is fixedly connected to the upper end of the base plate; The upper plate is connected to the upper end of the bolted threaded upright; Side frames, which are fixedly connected to the left and right ends of the upper plate; A control system, which is fixedly connected to one end of one of the side frames; A pressure dynamic simulation mechanism, comprising two sets of lifting components, a tire placement component, and a tire drive assembly; A tire puncture simulation mechanism, comprising a moving component and a puncture component; and The testing system includes sensors and a data acquisition module. The sensors are pressure sensors, displacement sensors, and acceleration sensors. The pressure sensors monitor the force changes during the penetration of a sharp nail into the test tire, obtaining the critical puncture pressure value. The displacement sensors record the movement distance of the sharp object placement platform and measure the penetration depth. The acceleration sensors are mounted on the rim of the test tire to capture the impact response at the moment of penetration and analyze the dynamic load characteristics. All sensor signals are connected to the data acquisition module, and are synchronously acquired, stored, and analyzed by the control system to generate a dynamic curve and evaluation report of the tire's puncture resistance performance.

[0006] As a preferred embodiment of the present invention, each set of lifting components includes a first rectangular seat, a guide rod, a first lead screw, a first lead screw nut, a connecting block, and a connecting seat. The first rectangular seat is fixedly connected to the upper end of the base plate. The first lead screw and the first lead screw nut are respectively connected to the upper end of the first rectangular seat. The first lead screw nut is connected to the circumferential surface of the first lead screw and the guide rod. The connecting block is connected to the side end of the first lead screw nut. The connecting block is connected to the first lead screw and the guide rod. The connecting seat is fixedly connected to the side end of the connecting block.

[0007] In a preferred embodiment of the present invention, the tire placement component includes a frame, a T-shaped plate, a pivot seat, a connecting shaft, and a test tire body. The frame is threadedly connected to the side end of the connecting seat by bolts. The T-shaped plate is fixedly connected to the lower end of the frame. The pivot seat is fixedly connected to the side end of the T-shaped plate. The connecting shaft is rotatably connected to the side end of the pivot seat. The test tire body is connected to the circumferential surface of the connecting shaft.

[0008] In a preferred embodiment of the present invention, the tire drive assembly includes a connecting platform, a second motor, a cylinder, a rubber pressure plate, and a telescopic spring. The connecting platform is fixedly connected to the side end of the T-shaped plate, the second motor is fixedly connected to the side end of the connecting platform, the output end of the second motor is connected to the connecting shaft, the cylinder is fixedly connected to the upper end of the frame, the rubber pressure plate is fixedly connected to the output end of the cylinder, the telescopic spring is sleeved and connected to the circumferential surface of the output end of the cylinder, and the rubber pressure plate is matched with the test tire body.

[0009] In a preferred embodiment of the present invention, the moving component includes a rectangular plate, a slide rail, a slider, and a connecting plate. The rectangular plate is fixedly connected to the upper end of the base plate, the slide rail is fixedly connected to the upper end of the rectangular plate, the slider is slidably connected to the slide rail, and the connecting plate is fixedly connected to the upper end of the slider.

[0010] In a preferred embodiment of the present invention, the piercing assembly includes a sharp object placement platform, a notch, a protrusion, and a sharp nail. The sharp object placement platform is connected to the upper end of the connecting plate, the notch is formed at the upper end of the connecting plate, the protrusion is fixedly connected to the lower end of the sharp object placement platform, the protrusion matches the connecting plate, and the sharp nail is fixedly connected to the upper end of the sharp object placement platform.

[0011] In a preferred embodiment of the present invention, a first sprocket is fixedly connected to the upper end of each set of first lead screws, and a first chain is rotatably connected to the circumferential surfaces of the two sets of first sprockets. A second sprocket is fixedly connected to the upper end of one set of first lead screws, and a first motor is fixedly connected to the side end of the other side frame. A third sprocket is fixedly connected to the output end of the first motor, and a second chain is rotatably connected to the circumferential surfaces of the second sprocket and the third sprocket.

[0012] In a preferred embodiment of the present invention, a fixing sleeve is fixedly connected between the base plate and the upright, and an adjusting seat is threadedly connected to the lower end of the base plate by bolts.

[0013] In a preferred embodiment of the present invention, a second rectangular seat is fixedly connected to the upper end of the rectangular plate, a second lead screw is rotatably connected to the side end of the second rectangular seat, a second lead screw nut is connected to the circumferential surface of the second lead screw, the upper end of the second lead screw nut is connected to the connecting plate, a third motor is fixedly connected to the upper end of the rectangular plate, and the output end of the third motor is connected to the second lead screw.

[0014] A detection method for a tire anti-penetration performance testing system based on dynamic simulation, comprising: S1: Install the tire to be tested on the connecting shaft and clamp it in place. Start the cylinder through the control system. Its output end pushes the rubber pressure plate down to the surface of the test tire body to simulate the tire ground pressure under vehicle load. At the same time, adjust the adjustment seat under the base plate to level the equipment and ensure the stability of the test process.

[0015] S2: Start the first motor, whose power is transmitted to a set of first lead screws through the third sprocket, the second chain, and the second sprocket. Then, through the first sprocket and the first chain, the first set of first lead screws is driven to rotate synchronously. The two sets of first lead screws drive their respective first lead screw nuts to move up and down along the guide rod, thereby driving the connecting block, connecting seat and frame to rise and fall as a whole, thereby adjusting the height position of the test tire body so that it is aligned with the sharp nail.

[0016] S3: Start the third motor, whose output drives the second lead screw to rotate, which in turn moves the second lead screw nut along the slide rail, thereby pushing the connecting plate and the sharp object placement platform and sharp nail on it to move horizontally, so that the sharp nail gradually penetrates the test tire body under load; during this process, the pressure sensor monitors the penetration force in real time, the displacement sensor records the penetration depth, and the acceleration sensor captures the impact response. All data are synchronously collected by the data acquisition module and transmitted to the control system to generate a dynamic performance curve, determine the breakdown critical point, and complete the puncture resistance performance evaluation.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution uses the combination of a cylinder and a rubber pressure plate to apply controllable vertical pressure to the test tire before testing, simulating the tire's ground contact state under actual vehicle load; at the same time, the acceleration sensor can capture the impact response at the moment of puncture, and combined with pressure and displacement sensors, it can realize the synchronous acquisition of multiple physical quantities.

[0018] 2. This solution uses a first motor to drive a sprocket and chain transmission mechanism to achieve synchronous rotation of two sets of first lead screws, thereby coordinating the movement of the lifting components on both sides. This linkage structure effectively avoids frame tilting or jamming problems that may be caused by unilateral drive, ensuring that the tire maintains a horizontal posture during lifting and adjustment, improving the operational stability and positioning accuracy of the testing device, ensuring that the sharp spikes can accurately align with the tire target area, and reducing testing errors.

[0019] 3. This solution integrates mechanical transmission, pneumatic loading, precision guidance, and multi-sensor monitoring and control systems, achieving fully automated operation from tire positioning, load application, puncture execution to data acquisition. Through the control system's synchronous acquisition and analysis of pressure, displacement, and acceleration signals, it can automatically generate dynamic curves of tire puncture resistance and output evaluation reports. This integrated design not only improves testing efficiency and reduces the impact of human intervention but also provides quantitative data support and scientific evaluation criteria for tire material optimization and structural improvement, making it suitable for laboratory research and development and quality testing scenarios. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 For the present invention Figure 2 First exploded view of the middle rectangular plate; Figure 4For the present invention Figure 2 Enlarged view of the midsole plate; Figure 5 For the present invention Figure 4 Exploded view of the midsole plate; Figure 6 For the present invention Figure 5 The second exploded view of the middle rectangular plate; Figure 7 For the present invention Figure 6 Enlarged view of the central rectangular base; Figure 8 For the present invention Figure 6 Enlarged view of the middle cylinder section; Figure 9 For the present invention Figure 6 Enlarged view of the second motor in the middle.

[0021] In the diagram: 1. Base plate; 101. Upright pole; 102. Top plate; 103. Side frame; 104. First motor; 105. Control system; 106. Adjusting seat; 107. Fixing sleeve; 2. First rectangular seat; 201. Smooth rod; 202. First lead screw; 203. First lead screw nut; 204. Connecting block; 205. Connecting seat; 206. First sprocket; 207. First chain; 208. Second sprocket; 209. Third sprocket; 210. Second chain; 3. Frame; 301. T 302. Shaft base; 303. Connecting shaft; 305. Connecting platform; 306. Second motor; 307. Test tire body; 4. Cylinder; 401. Rubber pressure plate; 402. Telescopic spring; 5. Rectangular plate; 501. Slide rail; 502. Slider; 503. Connecting plate; 504. Sharp object placement platform; 505. Notch; 506. Protrusion; 507. Sharp nail; 508. Second rectangular seat; 509. Second lead screw; 510. Second lead screw nut; 511. Third motor. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0025] Please see Figure 1-9 This invention provides a tire anti-penetration performance testing system based on dynamic simulation, comprising: Base plate 1; Upright pole 101 is fixedly connected to the upper end of the base plate 1; Upper plate 102, the upper plate 102 is connected to the upper end of the bolt threaded upright 101; Side frame 103 is fixedly connected to the left and right ends of the upper plate 102; The control system 105 is fixedly connected to the side end of one of the side frames 103; The pressure dynamic simulation mechanism includes two sets of lifting components, tire placement components, and tire drive components. The tire puncture simulation mechanism includes a moving component and a puncture component; and The testing system includes sensors and a data acquisition module. The sensors are pressure sensors, displacement sensors, and acceleration sensors. The pressure sensors monitor the force changes during the process of the sharp nail 507 piercing the test tire body 307 and obtain the critical puncture pressure value. The displacement sensors record the movement distance of the sharp object placement platform 504 and measure the puncture depth. The acceleration sensors are installed on the rim of the test tire body 307 to capture the impact response at the moment of puncture and analyze the dynamic load characteristics. All sensor signals are connected to the data acquisition module and synchronously acquired, stored, and analyzed by the control system 105 to generate a dynamic curve and evaluation report of the tire's puncture resistance performance.

[0026] In a specific embodiment of the present invention, when it is necessary to test the puncture resistance of a test tire, the test tire body 307 to be tested is mounted on the connecting shaft 303 and fixed by a clamp. After the tire is installed, the cylinder 4 is activated, and its output end pushes the rubber pressure plate 401 downward to press the surface of the test tire body 307. When the rubber pressure plate 401 applies pressure, the load state borne by the tire during actual vehicle driving is simulated, ensuring that the test environment is close to the real working conditions.

[0027] Once the load is applied, the first motor 104 is started, and its output drives the third sprocket 209 to rotate. This, in turn, drives the second sprocket 208 to rotate via the second chain 210, thereby rotating a set of first lead screws 202. When these first lead screws 202 rotate, the first chain 207 and the first sprocket 206 simultaneously drive the other set of first lead screws 202 to rotate. When both sets of first lead screws 202 rotate synchronously, the first lead screw nut 203 on them moves up and down along the guide rod 201, causing the connecting block 204, connecting seat 205, and frame 3 to rise and fall as a whole. When the frame 3 adjusts the test tire body 307 to a suitable height aligned with the sharp nail 507, the first motor 104 is stopped, completing the tire position adjustment.

[0028] Once the tire is aligned, the third motor 511 is activated, and its output drives the second lead screw 509 to rotate. As the second lead screw 509 rotates, it causes the second lead screw nut 510 to move horizontally along the slide rail 501. As the second lead screw nut 510 moves, it pushes the connecting plate 503 and its upper end's sharp object placement platform 504 and sharp nail 507 towards the test tire body 307. When the sharp nail 507 contacts and gradually pierces the tire tread, the pressure sensor monitors the force changes during the piercing process in real time, the displacement sensor records the piercing depth, and the acceleration sensor captures the impact response at the moment of piercing.

[0029] The signals collected by the aforementioned sensors are transmitted to the data acquisition module and processed synchronously by the control system 105. The structure and working principles of the sensors, data acquisition module, and control system are existing technologies in the field and will not be described in detail here; they are used to achieve the functions of acquiring, transmitting, storing, and analyzing physical signals. The control system 105 generates a dynamic curve of the tire's puncture resistance performance based on the received data, determines the puncture critical point, and finally outputs an evaluation report.

[0030] Please refer to the details. Figure 1-9Each lifting component includes a first rectangular seat 2, a smooth rod 201, a first lead screw 202, a first lead screw nut 203, a connecting block 204, and a connecting seat 205. The first rectangular seat 2 is fixedly connected to the upper end of the base plate 1. The first lead screw 202 and the first lead screw nut 203 are respectively connected to the upper end of the first rectangular seat 2. The first lead screw nut 203 is connected to the circumferential surface of the first lead screw 202 and the smooth rod 201. The connecting block 204 is connected to the side end of the first lead screw nut 203. The connecting block 204 is connected to the first lead screw 202 and the smooth rod 201. The connecting seat 205 is fixedly connected to the side end of the connecting block 204.

[0031] In this embodiment: when it is necessary to adjust the height of the test tire, the first motor 104 is started, and its power is transmitted to the first lead screw 202 in the two sets of lifting components through the sprocket and chain transmission mechanism. When the first lead screw 202 rotates, the first lead screw nut 203, which is threaded with it, moves up and down axially under the guidance of the guide rod 201. When the first lead screw nut 203 moves, it drives the connecting block 204, which is fixedly connected to it, to move together. When the connecting block 204 moves, the connecting seat 205 fixed to its side end rises and falls accordingly.

[0032] Since the connecting seat 205 is connected to the frame 3, and the test tire body 307 is installed on the frame 3, the lifting of the connecting seat 205 directly drives the entire tire placement component to move vertically. When the two sets of lifting components move in coordination under the synchronous drive of the first motor 104, it ensures that the tire maintains a horizontal posture during the lifting process, avoiding uneven force or misalignment with the sharp nail 507 due to tilting.

[0033] Please refer to the details. Figure 1-9 The tire placement component includes a frame 3, a T-shaped plate 301, a pivot seat 302, a connecting shaft 303, and a test tire body 307. The frame 3 is connected to the side end of the connecting seat 205 by bolts and threads. The T-shaped plate 301 is fixedly connected to the lower end of the frame 3. The pivot seat 302 is fixedly connected to the side end of the T-shaped plate 301. The connecting shaft 303 is rotatably connected to the side end of the pivot seat 302. The test tire body 307 is connected to the circumferential surface of the connecting shaft 303.

[0034] In this embodiment: after the lifting component completes the height adjustment, the frame 3 moves to the preset position along with the connecting seat 205, and is fixedly connected to the connecting seat 205 by bolts to ensure the overall structure is stable; after the frame 3 is positioned, the T-shaped plate 301 fixed at its lower end determines its spatial posture, providing a support base for tire installation; after the side end of the T-shaped plate 301 is connected to the rotating shaft seat 302, a stable bearing mounting position is formed; when the connecting shaft 303 is installed in the rotating shaft seat 302 and a rotatable connection is achieved, a rotating shaft structure for tire rotation is formed.

[0035] The test tire body 307 is fitted onto the circumferential surface of the connecting shaft 303 and fixed by a locking nut or flange, so that it can rotate synchronously with the connecting shaft 303. When the second motor 306 drives the connecting shaft 303 to rotate, the test tire body 307 rotates smoothly under the support of the rotating shaft seat 302, simulating the rolling state of the vehicle during driving.

[0036] Please refer to the details. Figure 1-9 The tire drive assembly includes a connecting platform 305, a second motor 306, a cylinder 4, a rubber pressure plate 401, and a telescopic spring 402. The connecting platform 305 is fixedly connected to the side end of the T-shaped plate 301. The second motor 306 is fixedly connected to the side end of the connecting platform 305. The output end of the second motor 306 is connected to the connecting shaft 303. The cylinder 4 is fixedly connected to the upper end of the frame 3. The rubber pressure plate 401 is fixedly connected to the output end of the cylinder 4. The telescopic spring 402 is sleeved and connected to the circumferential surface of the output end of the cylinder 4. The rubber pressure plate 401 matches the test tire body 307.

[0037] In this embodiment: after the test tire body 307 is installed on the connecting shaft 303, the cylinder 4 is activated, and its output end extends downward, pushing the rubber pressure plate 401 to press against the tread of the test tire body 307. When the rubber pressure plate 401 applies pressure, the actual load borne by the tire during vehicle operation is simulated, making the test state closer to the real usage conditions. When the cylinder 4 pushes the rubber pressure plate 401 down, the telescopic spring 402 on the circumferential surface of its output end is compressed, which plays a buffering role, avoiding rigid impact damage to the tire surface, and at the same time providing a certain elastic compensation when the load changes, making the pressure distribution more uniform.

[0038] When it is necessary to test the puncture resistance of a tire under rolling conditions, the second motor 306 is started, and its power is transmitted to the connecting shaft 303 through the output end. When the connecting shaft 303 rotates, it drives the test tire body 307 mounted on it to rotate. When the tire rotates and works in conjunction with the applied load, it realistically simulates the dynamic ground contact and force state of the tire during vehicle operation.

[0039] Please refer to the details. Figure 1-9 The moving component includes a rectangular plate 5, a slide rail 501, a slider 502, and a connecting plate 503. The rectangular plate 5 is fixedly connected to the upper end of the base plate 1, the slide rail 501 is fixedly connected to the upper end of the rectangular plate 5, the slider 502 is slidably connected to the slide rail 501, and the connecting plate 503 is fixedly connected to the upper end of the slider 502.

[0040] In this embodiment: when a tire puncture test is required; the connecting plate 503 moves horizontally under the action of the drive mechanism; when the connecting plate 503 moves; the slider 502 connected to its lower end slides smoothly along the slide rail 501 fixed on the rectangular plate 5, achieving guidance and support; when the slider 502 moves on the slide rail 501; this ensures that the connecting plate 503 moves along a predetermined straight trajectory, avoiding deviation or jamming; when the rectangular plate 5 is fixed to the upper end of the base plate 1 by bolts; this provides a stable installation foundation for the entire moving assembly, ensuring overall rigidity during operation.

[0041] Please refer to the details. Figure 1-9 The piercing assembly includes a sharp object placement platform 504, a notch 505, a protrusion 506, and a sharp nail 507. The sharp object placement platform 504 is connected to the upper end of the connecting plate 503. The notch 505 is opened at the upper end of the connecting plate 503. The protrusion 506 is fixedly connected to the lower end of the sharp object placement platform 504 and matches the connecting plate 503. The sharp nail 507 is fixedly connected to the upper end of the sharp object placement platform 504.

[0042] In this embodiment: when the moving component drives the connecting plate 503 to move horizontally, the sharp object placement platform 504 connected to its upper end moves synchronously; when the sharp object placement platform 504 moves, the protrusion 506 fixed at its lower end is embedded in the recess 505 opened on the connecting plate 503, forming a limiting and anti-detachment structure; when the protrusion 506 and the recess 505 match and cooperate, it ensures that the connection between the sharp object placement platform 504 and the connecting plate 503 is stable, effectively transmits thrust, and prevents vertical loosening or detachment during the movement.

[0043] When the sharp object placement platform 504 moves forward to the test position, the sharp nail 507 fixed at its upper end is aligned with the target area of ​​the tread of the test tire body 307 under load. When the third motor 511 drives the second lead screw 509 to continue advancing, the sharp nail 507 gradually pierces the tire tread, simulating the working condition of the tire being punctured by a sharp object during actual driving.

[0044] Please refer to the details. Figure 1-9 Each set of first lead screws 202 has a first sprocket 206 fixedly connected to its upper end. The circumferential surfaces of the two sets of first sprockets 206 are meshed and rotatably connected to a first chain 207. The upper end of one set of first lead screws 202 is fixedly connected to a second sprocket 208. The side end of the other side frame 103 is fixedly connected to a first motor 104. The output end of the first motor 104 is fixedly connected to a third sprocket 209. The circumferential surfaces of the second sprocket 208 and the third sprocket 209 are meshed and rotatably connected to a second chain 210.

[0045] In this embodiment: when it is necessary to adjust the height of the test tire, the first motor 104 is started, and its output drives the third sprocket 209 to rotate; when the third sprocket 209 rotates, the second chain 210 drives the second sprocket 208 meshing with it to rotate; when the second sprocket 208 is installed on the upper end of one set of first lead screws 202, the first lead screw 202 rotates synchronously.

[0046] When the first lead screw 202 rotates, power is transmitted to the first sprocket 206 at the upper end of the other set of first lead screws 202 through the first sprocket 206 and the first chain 207 fixed at its upper end. When the first chain 207 drives the first sprocket 206 on the other side to rotate, the synchronous rotation of the two sets of first lead screws 202 is achieved.

[0047] When the two sets of first lead screws 202 rotate synchronously, they drive their respective first lead screw nuts 203 to move up and down along the guide rod 201. When the two first lead screw nuts 203 move synchronously, they drive their respective connecting blocks 204, connecting seats 205 and the connected frame 3 to rise and fall synchronously.

[0048] Please refer to the details. Figure 1-9 A fixing sleeve 107 is fixedly connected between the base plate 1 and the upright 101, and an adjusting seat 106 is threadedly connected to the lower end of the base plate 1 by bolts.

[0049] In this embodiment, the base plate 1 is connected to the adjustment seat 106 by bolt thread through the threaded hole at its lower end. By rotating the adjustment seat 106, the height position of the base plate 1 in the vertical direction can be finely adjusted to realize the overall level adjustment of the equipment, ensuring that the axes of each moving part remain parallel during the test, and reducing motion interference or measurement errors caused by installation tilt.

[0050] Meanwhile, the upright 101 passes through and is fixed to the base plate 1, and a fixing sleeve 107 is provided between the two. The fixing sleeve 107 is fitted on the outside of the upright 101 and bolted to the base plate 1 to enhance the connection rigidity and stability between the upright 101 and the base plate 1, and to prevent the upright from loosening or deforming due to vibration or load changes during the operation of the equipment.

[0051] Please refer to the details. Figure 1-9 A second rectangular seat 508 is fixedly connected to the upper end of the rectangular plate 5. A second lead screw 509 is rotatably connected to the side end of the second rectangular seat 508. A second lead screw nut 510 is connected to the circumferential surface of the second lead screw 509. The upper end of the second lead screw nut 510 is connected to the connecting plate 503. A third motor 511 is fixedly connected to the upper end of the rectangular plate 5. The output end of the third motor 511 is connected to the second lead screw 509.

[0052] In this embodiment: when it is necessary to drive the piercing component to move horizontally, the third motor 511 is started, its output end rotates and drives the second lead screw 509 connected to it to rotate; when the second lead screw 509 rotates, the second lead screw nut 510, which is fitted to its circumferential surface, cannot rotate with the shaft under the limitation of the second rectangular seat 508, and can only move linearly along the lead screw axis; when the second lead screw nut 510 moves, it pushes the connecting plate 503 connected to its upper end to move together.

[0053] Since the connecting plate 503 is slidably connected to the slide rail 501 fixed on the rectangular plate 5 via the slider 502, the connecting plate 503 smoothly makes a linear feed motion along the slide rail 501 under the drive of the second lead screw 509; when the connecting plate 503 moves, the sharp object placement platform 504 and the sharp nail 507 installed on it are pushed forward, realizing the gradual puncture of the test tire body 307.

[0054] The operating procedure of this device is as follows: First, install the test tire body 307 onto the connecting shaft 303 and fix it with a clamp; adjust the overall height of the device by rotating the adjusting seat 106 at the lower end of the base plate 1 to ensure that the device is in a horizontal state and avoid uneven force due to tilting during the test; start the cylinder 4, whose output end pushes the rubber pressure plate 401 downward, so that the rubber pressure plate 401 presses the surface of the test tire body 307, simulating the actual load borne by the tire during vehicle driving; the telescopic spring 402 provides compression during the compression process. The system buffers the pressure to ensure even application. The first motor 104 is activated, its output driving the third sprocket 209 to rotate. This, in turn, drives the second sprocket 208 via the second chain 210, which in turn drives a set of first lead screws 202 coaxial with it to rotate. These first lead screws 202, via the first sprocket 206 and the first chain 207, synchronously drive another set of first lead screws 202 to rotate. The two sets of first lead screws 202 respectively drive their first lead screw nuts 203 to move up and down along the guide rod 201, thus moving the connecting block 204, the connecting seat 205, and the frame. The frame 3 is raised and lowered as a whole to adjust the height of the test tire body 307, aligning it with the sharp nail 507. The third motor 511 is activated, and its output drives the second lead screw 509 to rotate, causing the second lead screw nut 510 to move axially, pushing the connecting plate 503 to slide on the slide rail 501. This allows the sharp object placement platform 504 and the sharp nail 507 to advance horizontally, gradually piercing the tread of the test tire body 307 under load. During the piercing process, the pressure sensor monitors the puncture force in real time, the displacement sensor records the piercing depth, and the acceleration sensor captures the impact response. All sensor signals are synchronously acquired by the data acquisition module and transmitted to the control system 105 to generate a force-displacement-acceleration dynamic curve, analyze the tire deformation characteristics, determine the puncture critical point, and complete the sharp object puncture resistance performance evaluation. After the test, the third motor 511 reverses, causing the sharp nail 507 to exit the tire. The cylinder 4 retracts, and the rubber pressure plate 401 detaches from the tire surface. The test tire is removed, completing a single test process. The system can be replaced with different sharp nails or the parameters can be adjusted for the next round of testing.

[0055] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tire anti-penetration performance testing system based on dynamic simulation, characterized in that, include: Base plate (1); Upright pole (101), which is fixedly connected to the upper end of the base plate (1); Upper plate (102), the upper plate (102) is connected to the upper end of the bolt threaded upright (101); Side frame (103), the side frame (103) is fixedly connected to the left and right ends of the upper plate (102); A control system (105) is fixedly connected to the side end of one of the side frames (103); A pressure dynamic simulation mechanism, comprising two sets of lifting components, a tire placement component, and a tire drive assembly; A tire puncture simulation mechanism, comprising a moving component and a puncture component; and The testing system includes sensors and a data acquisition module. The sensors are a pressure sensor, a displacement sensor, and an acceleration sensor. The pressure sensor monitors the force change during the process of the sharp nail (507) piercing the test tire body (307) and obtains the critical pressure value for puncture. The displacement sensor records the moving distance of the sharp object placement platform (504) and measures the puncture depth. The acceleration sensor is installed on the rim of the test tire body (307) to capture the impact response at the moment of puncture and analyze the dynamic load characteristics. All sensor signals are connected to the data acquisition module and synchronously collected, stored, and analyzed by the control system (105) to generate a dynamic curve and evaluation report of the tire's puncture resistance performance.

2. The tire anti-penetration performance testing system based on dynamic simulation according to claim 1, characterized in that: Each set of lifting components includes a first rectangular seat (2), a smooth rod (201), a first lead screw (202), a first lead screw nut (203), a connecting block (204), and a connecting seat (205). The first rectangular seat (2) is fixedly connected to the upper end of the base plate (1). The first lead screw (202) and the first lead screw nut (203) are respectively connected to the upper end of the first rectangular seat (2). The first lead screw nut (203) is connected to the circumferential surface of the first lead screw (202) and the smooth rod (201). The connecting block (204) is connected to the side end of the first lead screw nut (203). The connecting block (204) is connected to the first lead screw (202) and the smooth rod (201). The connecting seat (205) is fixedly connected to the side end of the connecting block (204).

3. The tire anti-penetration performance testing system based on dynamic simulation according to claim 2, characterized in that: The tire placement component includes a frame (3), a T-shaped plate (301), a pivot seat (302), a connecting shaft (303), and a test tire body (307). The frame (3) is connected to the side end of the connecting seat (205) by bolts and threads. The T-shaped plate (301) is fixedly connected to the lower end of the frame (3). The pivot seat (302) is fixedly connected to the side end of the T-shaped plate (301). The connecting shaft (303) is rotatably connected to the side end of the pivot seat (302). The test tire body (307) is connected to the circumferential surface of the connecting shaft (303).

4. The tire anti-penetration performance testing system based on dynamic simulation according to claim 3, characterized in that: The tire drive assembly includes a connecting platform (305), a second motor (306), a cylinder (4), a rubber pressure plate (401), and a telescopic spring (402). The connecting platform (305) is fixedly connected to the side end of the T-shaped plate (301). The second motor (306) is fixedly connected to the side end of the connecting platform (305). The output end of the second motor (306) is connected to the connecting shaft (303). The cylinder (4) is fixedly connected to the upper end of the frame (3). The rubber pressure plate (401) is fixedly connected to the output end of the cylinder (4). The telescopic spring (402) is sleeved and connected to the circumferential surface of the output end of the cylinder (4). The rubber pressure plate (401) matches the test tire body (307).

5. The tire anti-penetration performance testing system based on dynamic simulation according to claim 4, characterized in that: The moving component includes a rectangular plate (5), a slide rail (501), a slider (502), and a connecting plate (503). The rectangular plate (5) is fixedly connected to the upper end of the base plate (1), the slide rail (501) is fixedly connected to the upper end of the rectangular plate (5), the slider (502) is slidably connected to the slide rail (501), and the connecting plate (503) is fixedly connected to the upper end of the slider (502).

6. The tire anti-penetration performance testing system based on dynamic simulation according to claim 1, characterized in that: The piercing assembly includes a sharp object placement platform (504), a notch (505), a protrusion (506), and a sharp nail (507). The sharp object placement platform (504) is connected to the upper end of the connecting plate (503). The notch (505) is opened at the upper end of the connecting plate (503). The protrusion (506) is fixedly connected to the lower end of the sharp object placement platform (504). The protrusion (506) matches the connecting plate (503). The sharp nail (507) is fixedly connected to the upper end of the sharp object placement platform (504).

7. The tire anti-penetration performance testing system based on dynamic simulation according to claim 1, characterized in that: Each set of first lead screws (202) has a first sprocket (206) fixedly connected to its upper end. The circumferential surfaces of the two sets of first sprockets (206) are meshed and rotatably connected to a first chain (207). The upper end of one set of first lead screws (202) is fixedly connected to a second sprocket (208). The side end of the other side frame (103) is fixedly connected to a first motor (104). The output end of the first motor (104) is fixedly connected to a third sprocket (209). The circumferential surfaces of the second sprocket (208) and the third sprocket (209) are meshed and rotatably connected to a second chain (210).

8. The tire anti-penetration performance testing system based on dynamic simulation according to claim 7, characterized in that: A fixing sleeve (107) is fixedly connected between the base plate (1) and the upright (101), and an adjusting seat (106) is threadedly connected to the lower end of the base plate (1) by bolts.

9. The tire anti-penetration performance testing system based on dynamic simulation according to claim 1, characterized in that: The upper end of the rectangular plate (5) is fixedly connected to a second rectangular seat (508), the side end of the second rectangular seat (508) is rotatably connected to a second lead screw (509), the circumferential surface of the second lead screw (509) is connected to a second lead screw nut (510), the upper end of the second lead screw nut (510) is connected to a connecting plate (503), the upper end of the rectangular plate (5) is fixedly connected to a third motor (511), and the output end of the third motor (511) is connected to the second lead screw (509).

10. The detection method of the tire anti-penetration performance testing system based on dynamic simulation according to claim 1, comprising: S1: Install the tire to be tested on the connecting shaft (303) and clamp it in place. Start the cylinder (4) through the control system (105). Its output end pushes the rubber pressure plate (401) down to the surface of the test tire body (307) to simulate the tire ground pressure under vehicle load. At the same time, adjust the adjustment seat (106) under the base plate (1) to level the equipment and ensure the stability of the test process. S2: Start the first motor (104), whose power is transmitted to a set of first lead screws (202) through the third sprocket (209), the second chain (210), and the second sprocket (208). Then, through the first sprocket (206) and the first chain (207), the first set of first lead screws (202) are driven to rotate synchronously. The two sets of first lead screws (202) drive their respective first lead screw nuts (203) to move up and down along the guide rod (201), driving the connecting block (204), the connecting seat (205), and the frame (3) to rise and fall as a whole, thereby adjusting the height position of the test tire body (307) so that it is aligned with the sharp nail (507). S3: Start the third motor (511), whose output drives the second lead screw (509) to rotate, which drives the second lead screw nut (510) to move along the slide rail (501), thereby pushing the connecting plate (503) and the sharp object placement platform (504) and sharp nail (507) on it to move horizontally, so that the sharp nail (507) gradually pierces into the test tire body (307) under load. During this process, the pressure sensor monitors the piercing force in real time, the displacement sensor records the piercing depth, the acceleration sensor captures the impact response, and all data are synchronously collected by the data acquisition module and transmitted to the control system (105) to generate a dynamic performance curve, determine the puncture critical point, and complete the puncture resistance performance evaluation.

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