Tire anti-skid detection device and detection method

Abstract

The present invention relates to the technical field of tire testing equipment, and in particular to a tire anti-skid testing device and testing method. The tire anti-skid testing device includes a mounting shaft for mounting the tire, a lifting drive mechanism for driving the mounting shaft to lift and lower, and a first servo motor for driving the mounting shaft to rotate. A base is provided below the mounting shaft; a detection mechanism is provided on the base, and the detection mechanism includes a slider that slides with the base, a friction plate is detachably provided on the slider, a first pressure sensor is provided between the friction plate and the slider, and a spring is provided at one end of the slider in the sliding direction; a push plate connected to the spring is slidably provided on the base, and a pressure plate is fixedly provided; a second pressure sensor is provided between the push plate and the pressure plate. The present invention can automatically judge the quality of the tire anti-skid performance through the pressure values ​​detected by the first pressure sensor and the second pressure sensor, thereby reducing the labor intensity of the testing personnel, improving the testing efficiency, and achieving high accuracy in the test results.

Description

Technical Field

[0001] The present invention relates to the technical field of tire testing equipment, and in particular to a tire anti-skid testing device and a testing method. Background Art

[0002] The anti-skid properties of tires affect the safety of vehicles traveling on roads. Patent application publication number CN 116539336 A discloses a tire anti-skid detection device, comprising a mounting platform, a lifting mechanism, and a detection mechanism. The lifting mechanism is fixedly connected to the rear side of the upper surface of the mounting platform, and the lifting end of the lifting mechanism is connected to a mounting box, on which a tire mounting seat is provided. The detection mechanism is fixedly connected to the upper surface of the mounting platform and is located on one side of the tire mounting seat. The tire mounting seat comprises a seat body, which is fixedly mounted on the front side of the mounting box, and a tire mounting post is connected to the inner side of the seat body. The tire mounting post is rotatably connected to the inner wall of the mounting box. A drive mechanism is provided in the mounting box, and the drive mechanism is used to drive the tire mounting post to rotate. The tire height is adjusted by the lifting mechanism, and the horizontal position of the friction block is adjusted by the slide rail, so that the tire anti-skid detection device can adapt to a variety of tire sizes. A camera device is installed on the front side of the installation box or the moving block. The camera device is used to capture actual images or videos of the friction point between the tire and the friction block. However, the above technical solution has the following problems: the inspection personnel are required to watch the pictures or videos taken by the camera device, and then manually judge the quality of the tire anti-skid performance, which increases the labor intensity of the inspection personnel and reduces the inspection efficiency. In addition, there are large human interference factors in the judgment, and the accuracy of the inspection results is low. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a tire anti-skid detection device, including a mounting shaft for mounting the tire, a lifting drive mechanism for driving the mounting shaft to lift and lower, and a first servo motor for driving the mounting shaft to rotate, a base is provided under the mounting shaft; a detection mechanism is provided on the base, the detection mechanism includes a slider that slides with the base, a friction plate is detachably provided on the slider, a first pressure sensor is provided between the friction plate and the slider, and a spring is provided at one end of the slider in the sliding direction; a push plate connected to the spring is slidably provided on the base, and a pressure plate is fixedly provided; a second pressure sensor is provided between the push plate and the pressure plate.

[0004] Preferably, the mounting shaft includes a rotating shaft connected to the first servo motor and a mounting end for fixing the tire; the lifting drive mechanism includes a gantry, a hydraulic cylinder is provided on the top of the gantry, the piston rod of the hydraulic cylinder is connected to the lifting block, the mounting shaft can be rotated through the lifting block and connected to the first servo motor fixed on the lifting block, the base includes a bottom plate, a front end plate is provided at one end of the bottom plate, a rear end plate is provided at the other end, a slide groove is provided on the top to cooperate with the slider, and a guide rod sliding through the slider is provided between the front end plate and the rear end plate.

[0005] Preferably, the slider includes a slider body that slides with the base, a rectangular groove is provided on the upper end surface of the slider body, a first pressure sensor is provided at the bottom of the rectangular groove, a rectangular damping ring is fixedly provided on the inner wall, and a plurality of damping protrusions are equidistantly provided on the inner wall of the damping ring in the circumferential direction, and the friction plate can be inserted into the damping ring.

[0006] Preferably, the friction plate includes a support plate, an upper end surface of the support plate is provided with a mounting groove, a friction plate is provided in the mounting groove, and bolts connect and fix the friction plate and the support plate.

[0007] Preferably, the detection mechanism also includes a preload adjustment mechanism, which includes a threaded rod fixedly connected to the pressure plate, a rotating drum sleeved on the outside of the threaded rod and rotatably connected to the base, and a second servo motor arranged on the base, the inner side wall of the rotating drum is provided with a thread matching the threaded rod, the outer side wall is provided with a gear ring, and the output end of the second servo motor is provided with a first gear meshing with the gear ring.

[0008] Preferably, it also includes a spray mechanism, which includes a beam arranged above the friction plate and a displacement drive mechanism that drives the beam to move back and forth along the sliding direction of the slider, and a water flow channel is provided inside the beam, the water inlet end of the water flow channel is connected to the water source through a pump, and the water outlet end is connected to a nozzle, and the nozzle is facing the friction plate.

[0009] Preferably, the upper end surface of the friction plate is lower than the upper end surface of the rectangular groove, an annular water collecting trough is provided at the bottom of the rectangular groove, the gap formed by two adjacent damping protrusions on the damping ring is connected to the water collecting trough, and a drain outlet is provided on the side wall of the water collecting trough; an air flow duct is provided inside the crossbeam, the air flow duct is connected to the air supply system, an air outlet connected to the air flow duct is provided at the bottom of the crossbeam, and the air outlet is facing the friction plate.

[0010] Preferably, the displacement drive mechanism includes a screw and a sliding rod arranged on both sides of the sliding direction of the slider, the base is provided with a first bracket rotatably connected to the screw and a second bracket fixedly connected to the sliding rod, the screw is provided with a nut seat connected to the cross beam, the sliding rod is provided with a sliding block connected to the cross beam, and the screw is connected to the rotation drive mechanism.

[0011] Preferably, the rotation drive mechanism includes a second gear arranged on the mounting shaft and a first rotating shaft, a second rotating shaft and a third rotating shaft rotatably arranged on the gantry, the first rotating shaft is located directly above the second gear and is provided with a first sprocket and a third gear capable of engaging with the second gear, the second rotating shaft is provided with a second sprocket and a third sprocket, the third rotating shaft is provided with a fourth sprocket and a first bevel gear, a first chain is horizontally provided between the first sprocket and the second sprocket, a second chain is vertically provided between the third sprocket and the fourth sprocket, and the screw rod is provided with a second bevel gear engaged with the first bevel gear.

[0012] The present invention provides a method for detecting the anti-skid property of a tire, which is performed using the above-mentioned anti-skid property detection device, and comprises the following steps:

[0013] Step S1, connecting the lifting drive mechanism, the first servo motor and the detection mechanism to the controller, and the controller is connected to the display;

[0014] Step S2: Adjust the distance between the pressure plate and the slider so that the spring is in a compressed state and has a preload force. When the preload force detected by the second pressure sensor reaches the set value, the preload force adjustment ends. At this time, the preload force pushes the slider to stop at the end away from the pressure plate, pushing the push plate close to the pressure plate.

[0015] Step S3: Fix the tire on the mounting shaft. At this time, the tire is located above the friction plate and close to one end of the pressure plate. The lifting drive mechanism drives the mounting shaft downward so that the tire contacts the friction plate. The positive pressure of the tire on the friction plate is detected by the first pressure sensor. When the positive pressure reaches a set value, the tire stops pressing down.

[0016] Step S4: Start the first servo motor, and the tire rotates along the mounting shaft. The friction force generated between the tire and the friction plate drives the slider toward the pressure plate. The spring is further compressed, and the push plate applies pressure to the pressure plate. The second pressure sensor detects the pressure of the slider. When the pressure value falls within the preset qualified product parameter range, the tire's anti-skid performance meets the requirements.

[0017] Step S5: After the detection is completed, the first servo motor is turned off, and the lifting drive mechanism drives the mounting shaft to rise, so that the tire is away from the friction plate. At this time, the slider is reset to its initial position under the push of the spring.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] 1. A first pressure sensor 53 is provided to detect the magnitude of the positive pressure exerted by the tire on the friction plate 52, and a second pressure sensor 57 is provided to detect the magnitude of the travel pressure exerted on the pressure plate 56 by the friction plate 52 and the slider 51 when the tire rotates. The first pressure sensor 53 and the second pressure sensor 57 cooperate with each other to automatically detect the quality of the tire's anti-slip performance, thereby reducing workers' labor intensity and improving detection efficiency and the accuracy of the test results.

[0020] 2. The friction plate can be quickly fixed in the rectangular groove of the slider by inserting it into the damping ring. The damping protrusion of the damping ring can closely abut the circumferential side wall of the friction plate, improving the insertion stability of the friction plate;

[0021] 3. The friction plate consists of a support plate and a friction plate. The support plate can provide sufficient strength for the friction plate and improve the detection stability. The friction plate is detachably fixed in the mounting groove of the support plate by bolts, which improves the overall structural stability of the friction plate and facilitates the replacement of the friction plate at any time.

[0022] 4. The preload adjustment mechanism automatically adjusts the preload of the spring, reducing the labor intensity of workers and improving detection efficiency;

[0023] 5. The spray mechanism can spray water onto the friction plate to moisten it. After the friction plate is moistened, the tire's wet skid resistance can be tested on the moistened friction plate.

[0024] 6. The upper end surface of the friction plate is lower than the upper end surface of the rectangular groove. A height difference is set between the two, which can make the excess water stay in the rectangular groove during spraying. The excess water in the rectangular groove flows into the water collecting tank at the bottom of the rectangular groove from the gap between the two adjacent damping protrusions on the damping ring, and then flows out from the drain port, avoiding water flowing into the base and improving the detection cleanliness.

[0025] 7. The spray mechanism is equipped with an air flow channel, which is connected to the air supply system and can automatically dry the friction plate, reducing the labor intensity of workers;

[0026] 8. The rotary drive mechanism of the spray mechanism can be controlled to engage with the first servo motor to drive the crossbeam of the spray mechanism, thereby reducing the number of motors used;

[0027] In summary, the present invention can automatically judge the anti-skid performance of the tire through the pressure values ​​detected by the first pressure sensor and the second pressure sensor, thereby reducing the labor intensity of the inspection personnel, improving the inspection efficiency, and achieving high accuracy of the inspection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural diagram of the installation shaft;

[0030] Figure 3 It is a structural diagram of the lifting drive mechanism;

[0031] Figure 4 is a structural diagram of the base;

[0032] Figure 5 This is an exploded view of the detection mechanism;

[0033] Figure 6 This is the exploded view of the slider body;

[0034] Figure 7 This is an exploded view of the friction plate;

[0035] Figure 8 Schematic diagram of the structure of the preload force adjustment mechanism;

[0036] Figure 9 It is a structural diagram of the spray mechanism;

[0037] Figure 10 is a structural diagram of the beam;

[0038] Figure 11 Schematic diagram of the structure of the displacement drive mechanism;

[0039] Figure 12 It is a structural diagram of the rotary drive mechanism.

[0040] Explanation of the accompanying symbols 1. Mounting shaft, 11. Rotating shaft, 12. Mounting end, 2. Lifting drive mechanism, 21. Gantry, 22. Hydraulic cylinder, 23. Lifting block, 3. First servo motor, 4. Base, 41. Bottom plate, 42. Front end plate, 43. Rear end plate, 44. Slide, 45. Guide rod, 5. Detection mechanism, 51. Slider, 511. Slider body, 5111. Rectangular groove, 5112. Water collecting trough, 5113. Drain outlet, 512. Damping ring, 5121. Damping protrusion, 52. Friction plate, 521. Support plate, 5211. Mounting groove, 522, friction plate, 523, bolt, 53, first pressure sensor, 54, spring, 55, push plate, 56, pressure plate, 57, second pressure sensor, 58, preload adjustment mechanism, 581, threaded rod, 582, rotating drum, 583, second servo motor, 584, ring gear, 585, first gear, 6, spray mechanism, 61, beam, 611, water flow channel, 612, nozzle, 613, air flow channel, 614, air outlet, 62, displacement drive mechanism, 621, screw rod, 622, slide Moving rod, 623, first bracket, 624, second bracket, 625, nut seat, 626, sliding block, 63, rotation drive mechanism, 631, second gear, 632, first rotating shaft, 6321, first sprocket, 6322, third gear, 633, second rotating shaft, 6331, second sprocket, 6332, third sprocket, 634, third rotating shaft, 6341, fourth sprocket, 6342, first bevel gear, 635, first chain, 636, second chain, 637, second bevel gear. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0042] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0043] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content. Example 1

[0044] Combined with attachment Figure 1-12 This embodiment provides a tire anti-skid detection device, including a mounting shaft 1 for mounting a tire, a lifting drive mechanism 2 for driving the mounting shaft 1 to rise and fall, and a first servo motor 3 for driving the mounting shaft 1 to rotate. A base 4 is provided below the mounting shaft 1, and a detection mechanism 5 is provided on the base 4. The detection mechanism 5 includes a slider 51 that slides with the base 4, and a friction plate 52 is detachably provided on the slider 51. A first pressure sensor 53 is provided between the friction plate 52 and the slider 51, and a spring 54 is provided at one end of the slider 51 in the sliding direction; a push plate 55 connected to the spring 54 is slidably provided on the base 4, and a pressure plate 56 is fixedly provided; a second pressure sensor 57 is provided between the push plate 55 and the pressure plate 56.

[0045] In the above technical solution, the structure of the lifting drive mechanism 2 is not limited, and a screw-nut assembly or a hydraulic drive mechanism in the prior art can be directly adopted. The first pressure sensor 53 is used to detect the magnitude of the positive pressure (i.e., the vertical pressure) applied by the tire to the friction plate 52. Under a constant friction coefficient, the magnitude of the positive pressure applied by the tire to the friction plate 52 is positively correlated with the magnitude of the friction force between the tire and the friction plate 52. The second pressure sensor 57 is used to detect the magnitude of the pressure (i.e., the horizontal pressure) applied by the spring 54 to the pressure plate 56 when the slider 51 moves toward the pressure plate 56. The magnitude of the moving pressure is positively correlated with the magnitude of the friction force between the tire and the friction plate 52.

[0046] During the inspection, first connect the lifting drive mechanism 2, the first servo motor 3 and the detection mechanism 5 to the controller, and the controller is connected to the display; adjust the distance between the pressure plate 56 and the slider 51 so that the spring 54 is in a compressed state with a preload force. The preload force pushes the slider 51 to stop at the end away from the pressure plate 56, and pushes the push plate 55 to close to the pressure plate 56. The size of the preload force of the spring 54 in the initial state can be obtained through the second pressure sensor 57; fix the tire on the mounting shaft 1. At this time, the tire is located above the friction plate 52 and close to the end of the pressure plate 56. The lifting drive mechanism 2 drives the mounting shaft 1 to descend, so that the tire contacts the friction plate 52, and the first pressure sensor 53 detects the wheel The positive pressure of the tire on the friction plate 52, when the positive pressure reaches the set value, the tire stops pressing down; start the first servo motor 3, the tire rotates with the mounting shaft 1, and the friction force generated between the tire and the friction plate 52 drives the slider 51 to move toward the direction close to the pressure plate 56. The spring 54 is further compressed and applies pressure to the pressure plate 56 through the push plate 55. The second pressure sensor 57 detects the pressure of the slider 51. A large travel pressure indicates that the slider 51 has traveled a large distance and the tire has good anti-skid performance. A small travel pressure indicates that the slider 51 has traveled a small distance and the tire has poor anti-skid performance. When the travel pressure value falls within the preset qualified product parameter range, the tire's anti-skid performance meets the requirements.

[0047] To summarize, the first pressure sensor 53 is provided to detect the magnitude of the positive pressure applied by the tire to the friction plate 52, and the second pressure sensor 57 is used to detect the magnitude of the travel pressure applied to the pressure plate 56 when the tire rotates to drive the friction plate 52 and the slider 51 to move. When the travel pressure value falls within the preset qualified product parameter range, the anti-skid property of the tire meets the requirements. The first pressure sensor 53 and the second pressure sensor 57 cooperate with each other to automatically detect the quality of the anti-skid property of the tire, thereby reducing the labor intensity of workers and improving the detection efficiency and the accuracy of the detection results.

[0048] In a specific technical solution, the mounting shaft 1 includes a rotating shaft 11 connected to the first servo motor 3 and a mounting end 12 for fixing the tire; the lifting drive mechanism 2 includes a gantry 21, a hydraulic cylinder 22 is provided on the top of the gantry 21, the piston rod of the hydraulic cylinder 22 is connected to the lifting block 23, and the mounting shaft 1 can be rotated through the lifting block 23 and connected to the first servo motor 3 fixed on the lifting block 23, the base 4 includes a bottom plate 41, one end of the bottom plate 41 is provided with a front end plate 42, and the other end is provided with a rear end plate 43, and the top is provided with a slide groove 44 that cooperates with the slider 51, and a guide rod 45 that slides through the slider 51 is provided between the front end plate 42 and the rear end plate 43.

[0049] In the above technical solution, the rim of the tire is connected to the mounting end 12 by a nut and bolt assembly, so that the tire is fixed on the mounting shaft 1, and the hydraulic cylinder 22 of the lifting drive mechanism 2 drives the lifting block 23 and the mounting shaft 1 rotatably connected to the lifting block 23 to lift and lower vertically, thereby adjusting the positive pressure between the tire and the friction plate 52. Because the slider 51 is driven to slide by friction when the tire rotates, the gantry 21 must be arranged on one side of the sliding direction of the slider 51. This is common knowledge and will not be repeated here; the front end plate 42 and the rear end plate 43 of the base 4 can be used to install the guide rod 45 and to limit the position to prevent the slider 51 from separating from the bottom plate 41. The guide rod 45 can improve the sliding stability of the slider 51. When the guide rod 45 is set, the spring 54 can be sleeved on the guide rod 45 to improve the telescopic stability of the spring 54. In this embodiment, two guide rods 45 and two springs 54 are set.

[0050] In a specific technical solution, the slider 51 includes a slider body 511 that slides with the base 4, a rectangular groove 5111 is provided on the upper end surface of the slider body 511, a first pressure sensor 53 is provided at the bottom of the rectangular groove 5111, a rectangular damping ring 512 is fixedly provided on the inner wall, and a plurality of damping protrusions 5121 are equidistantly provided on the inner wall of the damping ring 512, and the friction plate 52 can be inserted into the damping ring 512.

[0051] In the above technical solution, the friction plate 52 can be quickly fixed in the rectangular groove 5111 of the slider 51 by inserting it into the damping ring 512. The damping protrusion 5121 of the damping ring 512 can tightly abut the circumferential side wall of the friction plate 52, thereby improving the insertion stability of the friction plate 52.

[0052] In a specific technical solution, the friction plate 52 includes a support plate 521 , an upper end surface of the support plate 521 is provided with a mounting groove 5211 , a friction plate 522 is provided in the mounting groove 5211 , and bolts 523 connect and fix the friction plate 522 and the support plate 521 .

[0053] In the above technical solution, the support plate 521 can provide sufficient strength for the friction plate 52, improve the detection stability, and the friction plate 522 is detachably fixed in the mounting groove 5211 of the support plate 521 by bolts 523, thereby improving the overall structural stability of the friction plate 52 and facilitating the replacement of the friction plate 522 at any time. Figure 7 As shown, a threaded hole is provided in the mounting groove 5211 , a through hole corresponding to the threaded hole is provided on the friction plate 522 , and a bolt 523 passes through the through hole and is threadedly connected to the threaded hole.

[0054] In a specific technical solution, the detection mechanism 5 also includes a preload adjustment mechanism 58, which includes a threaded rod 581 fixedly connected to the pressure plate 56, a rotating cylinder 582 sleeved on the outside of the threaded rod 581 and rotatably connected to the base 4, and a second servo motor 583 provided on the base 4. The inner wall of the rotating cylinder 582 is provided with a thread matching the threaded rod 581, and the outer wall is provided with a gear ring 584. The output end of the second servo motor 583 is provided with a first gear 585 meshing with the gear ring 584.

[0055] In the above technical solution, the preload force adjustment mechanism 58 can automatically adjust the preload force of the spring 54 through the second servo motor 583, which reduces the labor intensity of workers and improves the detection efficiency; the rotating drum 582 can be rotatably mounted on the base 4 in any appropriate manner, and the second servo motor 583 can be fixed on the base 4 in any appropriate manner. In this embodiment, the rear end plate 43 of the base 4 is close to the pressure plate 56, and the rotating drum 582 is rotatably mounted on the rear end plate 43 through a turntable bearing, and the second servo motor 583 is fixed on the rear end plate 43. When in use, the second servo motor 583 is started, and the second servo motor 583 drives the first gear 585 to rotate, and the first gear 585 drives the ring gear 584 meshing with it to rotate, and the ring gear 584 drives the rotating drum 582 to rotate. During the rotation of the rotating drum 582, the threaded rod 581 threadedly engaged with the rotating drum 582 can push the pressure plate 56 to move away from or close to the slider 51, thereby adjusting the compression degree of the spring 54 and increasing or decreasing the preload force of the spring 54. When the degree of compression of the spring 54 is high, the preload force of the spring 54 is high, and the resistance to the movement of the slider 51 toward the pressure plate 56 is high, and vice versa. It should be noted that the pressure plate 56 described in the present invention as being fixed to the base 4 means that the pressure plate 56 is in a fixed state during the detection state, while the slider 51 and the push plate 55 are in a slidable state. When the degree of compression of the spring 54 needs to be adjusted, the pressure plate 56 moves under the control of the second servo motor 583, thereby achieving the purpose of adjusting the preload force of the spring 54.

[0056] In a specific technical solution, the tire anti-skid detection device also includes a spray mechanism 6, which includes a beam 61 arranged above the friction plate 52 and a displacement drive mechanism 62 that drives the beam 61 to move back and forth along the sliding direction of the slider 51. A water flow channel 611 is provided inside the beam 61, and the water inlet end of the water flow channel 611 is connected to a water source through a pump, and the water outlet end is connected to a nozzle 612, and the nozzle 612 is facing the friction plate 52.

[0057] In the above technical solution, the displacement drive mechanism 62 can adopt conventional displacement drive parts such as cylinders and screw-nut assemblies. The displacement drive mechanism 62 can drive the crossbeam 61 to move along the sliding direction of the slider 51, and spray water to the friction plate 52 through the nozzle 612 to moisten the friction plate 52. After the friction plate 52 is moistened, the tire's anti-skid performance can be tested on the moistened friction plate 52. When the spray mechanism 6 sprays the friction plate 52, the friction plate 52 and the slider 51 are in the initial state and stationary. The entire detection surface of the friction plate 52 is sprayed by the movement of the crossbeam 61, thereby avoiding large splashes of water during spraying and improving the detection cleanliness.

[0058] In a specific technical solution, the upper end surface of the friction plate 52 is lower than the upper end surface of the rectangular groove 5111, and an annular water collecting trough 5112 is provided at the bottom of the rectangular groove 5111. The gap formed by the two adjacent damping protrusions 5121 on the damping ring 512 is connected to the water collecting trough 5112, and the side wall of the water collecting trough 5112 is provided with a drain outlet 5113; an air flow duct 613 is provided inside the crossbeam 61, and the air flow duct 613 is connected to the air supply system. An air outlet 614 connected to the air flow duct 613 is provided at the bottom of the crossbeam 61, and the air outlet 614 is directly facing the friction plate 52.

[0059] In the above technical solution, the upper end surface of the friction plate 52 is lower than the upper end surface of the rectangular groove 5111, and a height difference is set between the two, so that the excess water during spraying can be retained in the rectangular groove 5111, and the excess water retained in the rectangular groove 5111 flows from the gap between the two adjacent damping protrusions 5121 on the damping ring 512 into the water collecting tank 5112 at the bottom of the rectangular groove 5111, and then flows out from the drain port 5113 to the spray water collection box, or the water flowing out of the drain port 5113 is returned to the water source by a water pump, thereby avoiding water flow. The air supply system adopts common equipment in the prior art, which is usually an air compressor with a heating pipe to generate hot air. After the anti-slip test is completed, the slider 51 and the friction plate 52 are reset to their initial positions. At this time, the air supply system is started, and the displacement drive mechanism 62 drives the crossbeam 61 to move above the friction plate 52, and blows air to the friction plate 52 through the air outlet 614 to dry the friction plate 52. There is no need for workers to manually disassemble the friction plate 52 and then dry it, which reduces the labor intensity of workers.

[0060] In a specific technical solution, the displacement drive mechanism 62 includes a screw rod 621 and a sliding rod 622 arranged on both sides of the sliding direction of the slider 51, and the base 4 is provided with a first bracket 623 rotatably connected to the screw rod 621 and a second bracket 624 fixedly connected to the sliding rod 622. The screw rod 621 is provided with a nut seat 625 connected to the cross beam 61, and the sliding rod 622 is provided with a sliding block 626 connected to the cross beam 61. The screw rod 621 is connected to the rotation drive mechanism 63.

[0061] In the above technical solution, the rotation drive mechanism 63 can directly use a motor, and the beam 61 is fixed on the nut seat 625 and the sliding block 626, which improves the horizontal stability of the beam 61 when it moves. When the rotation drive mechanism 63 drives the screw rod 621 to rotate, the nut seat 625 moves on the screw rod 621, driving the beam 61 and the sliding block 626 to move synchronously, spraying the friction plate 52.

[0062] In a specific technical solution, the rotation drive mechanism 63 includes a second gear 631 provided on the mounting shaft 1 and a first rotating shaft 632, a second rotating shaft 633 and a third rotating shaft 634 rotatably provided on the gantry 21, the first rotating shaft 632 is located directly above the second gear 631, and is provided with a first sprocket 6321 and a third gear 6322 capable of engaging with the second gear 631, the second rotating shaft 633 is provided with a second sprocket 6331 and a third sprocket 6332, the third rotating shaft 634 is provided with a fourth sprocket 6341 and a first bevel gear 6342, a first chain 635 is horizontally provided between the first sprocket 6321 and the second sprocket 6331, a second chain 636 is vertically provided between the third sprocket 6332 and the fourth sprocket 6341, and the screw rod 621 is provided with a second bevel gear 637 engaged with the first bevel gear 6342.

[0063] In the above technical solution, the rotation drive mechanism 63 can drive the screw rod 621 to rotate through the first servo motor 3, reducing the number of motors used. When in use, the lifting block 23 is driven upward by the hydraulic cylinder 22 until the second gear 631 on the installation shaft 1 is engaged with the third gear 6322 on the first rotating shaft 632, and the first servo motor 3 is started. Through the engaged transmission structure, the installation shaft 1, the second gear 631, the first rotating shaft 632, the third gear 6322, the first sprocket 6321, the first chain 635, the second rotating shaft 633, the second sprocket 6331, the third sprocket 6332, the second chain 636, the third rotating shaft 634, the fourth sprocket 6341, the first bevel gear 6342 and the second bevel gear 637 rotate synchronously, and the second bevel gear 637 drives the screw rod 621 to rotate.

[0064] The working principle and working process of this embodiment are as follows: During detection, ① the lifting drive mechanism 2, the first servo motor 3, the detection mechanism 5 and the spray mechanism 6 are connected to the controller (specifically, the hydraulic cylinder 22, the first servo motor 3, the first pressure sensor 53, the second pressure sensor 57, and the second servo motor 583 are connected to the controller), and the controller is connected to the display; ② the preload force of the spring 54 is adjusted by the preload force adjustment mechanism 58, and the second servo motor 583 is started. The second servo motor 583 drives the first gear 585 to rotate, and the first gear 585 drives The gear ring 584 meshing with it rotates, and the gear ring 584 drives the rotating drum 582 to rotate. During the rotation of the rotating drum 582, the threaded rod 581 threadedly matched with the rotating drum 582 can push the pressure plate 56 to move away from or towards the slider 51, thereby adjusting the compression degree of the spring 54 and increasing or decreasing the preload force of the spring 54. When the preload force detected by the second pressure sensor 57 reaches the set value, the preload force adjustment ends. At this time, the preload force pushes the slider 51 to stop at the end away from the pressure plate 56, pushing the push plate 55 close to the pressure plate 56; ③ Fix the tire on the mounting shaft 1 , at this time, the tire is located above the friction plate 52 and near the end of the pressure plate 56. The hydraulic cylinder 22 of the lifting drive mechanism 2 drives the lifting block 23 and the mounting shaft 1 to descend, so that the tire contacts the friction plate 52. The positive pressure of the tire on the friction plate 52 is detected by the first pressure sensor 53. When the positive pressure reaches the set value, the tire stops pressing down; ④ Start the first servo motor 3, the tire rotates with the mounting shaft 1, and the friction force generated between the tire and the friction plate 52 drives the slider 51 to move towards the direction close to the pressure plate 56. The spring 54 is further compressed, and the pressure is applied to the pressure plate 56 through the push plate 55. The second pressure The force sensor 57 detects the pressure applied by the slider 51. When the pressure is high, it indicates that the slider 51 has traveled a long distance and the tire has good anti-skid performance. When the pressure is low, it indicates that the slider 51 has traveled a short distance and the tire has poor anti-skid performance. When the pressure value falls within the preset qualified product parameter range, the tire's anti-skid performance meets the requirements. ⑤ After the test is completed, the first servo motor 3 is turned off, and the hydraulic cylinder 22 of the lifting drive mechanism 2 drives the lifting block 23 and the mounting shaft 1 to rise, moving the tire away from the friction plate 52. At this time, the slider 51 is pushed back to its initial position by the spring 54.⑥ When the anti-skid test is required, the hydraulic cylinder 22 of the lifting drive mechanism 2 drives the lifting block 23 and the installation shaft 1 to rise until the second gear 631 on the installation shaft 1 is engaged with the third gear 6322 of the rotation drive mechanism 63, and the first servo motor 3 is started. Through the meshing transmission structure, the installation shaft 1, the second gear 631, the first rotating shaft 632, the third gear 6322, the first sprocket 6321, the first chain 635, the second rotating shaft 633, the second sprocket 6331, the third sprocket 6332, the second chain 636, and the third rotating shaft are engaged. 634, the fourth sprocket 6341, the first bevel gear 6342, and the second bevel gear 637 rotate synchronously. The second bevel gear 637 drives the screw 621 to rotate. The screw 621 rotates to drive the nut seat 625 to move. The nut seat 625 drives the crossbeam 61 and the sliding block 626 to move synchronously. Water is sprayed onto the friction plate 52 through the nozzle 612 to wet the friction plate 52. After the friction plate 52 is wetted, the crossbeam 61 is driven to reset by the rotation drive mechanism 63. The first servo motor 3 is turned off, and the tire's anti-skid performance is tested on the wet friction plate 52. , the specific detection process is the same as ① to ⑤; ⑦ When the friction plate 52 needs to be dried, the hydraulic cylinder 22 of the lifting drive mechanism 2 drives the lifting block 23 and the installation shaft 1 to rise until the second gear 631 on the installation shaft 1 is engaged with the third gear 6322 of the rotation drive mechanism 63, and the first servo motor 3 is started. Through the meshing transmission structure, the installation shaft 1, the second gear 631, the first rotating shaft 632, the third gear 6322, the first sprocket 6321, the first chain 635, the second rotating shaft 633, the second sprocket 6331, the third sprocket 6332, the second The chain 636, third rotating shaft 634, fourth sprocket 6341, first bevel gear 6342, and second bevel gear 637 rotate synchronously. The second bevel gear 637 drives the screw 621 to rotate. The screw 621 rotates, driving the nut seat 625 to move. The nut seat 625 drives the crossbeam 61 and the sliding block 626 to move synchronously. The air supply system is activated, blowing air through the air outlet 614 toward the friction plate 52, drying the friction plate 52. After the friction plate 52 is completely dried, the rotary drive mechanism 63 drives the crossbeam 61 to return to its original position, and the first servo motor 3 is turned off. Example 2

[0065] This embodiment provides a tire anti-skid performance detection method, comprising the following steps:

[0066] Step S1, connecting the lifting drive mechanism 2, the first servo motor 3 and the detection mechanism 5 to the controller, and the controller is connected to the display;

[0067] Step S2: Adjust the distance between the pressure plate 56 and the slider 51 so that the spring 54 is in a compressed state and has a preload force. When the preload force detected by the second pressure sensor 57 reaches the set value, the preload force adjustment ends. At this time, the preload force pushes the slider 51 to stop at the end away from the pressure plate 56, pushing the push plate 55 close to the pressure plate 56.

[0068] Step S3: Fix the tire on the mounting shaft 1. At this time, the tire is located above the friction plate 52 and near the end of the pressure plate 56. The lifting drive mechanism 2 drives the mounting shaft 1 downward so that the tire contacts the friction plate 52. The positive pressure of the tire on the friction plate 52 is detected by the first pressure sensor 53. When the positive pressure reaches a set value, the tire stops pressing downward.

[0069] Step S4: Start the first servo motor 3, and the tire rotates along with the mounting shaft 1. The friction force generated between the tire and the friction plate 52 drives the slider 51 toward the pressure plate 56. The spring 54 is further compressed, and the pressure plate 56 is pressed by the push plate 55. The second pressure sensor 57 detects the pressure of the slider 51. When the pressure value falls within the preset acceptable product parameter range, the tire's anti-skid performance meets the requirements.

[0070] Step S5: After the detection is completed, the first servo motor 3 is turned off, and the lifting drive mechanism 2 drives the mounting shaft 1 to rise, so that the tire is away from the friction plate 52. At this time, the slider 51 is pushed by the spring 54 to return to the initial position.

[0071] The above embodiments are preferred implementations of the present invention, but the implementation of the present invention is not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A tire anti-skid detection device, comprising a mounting shaft (1) for mounting a tire, a lifting drive mechanism (2) for driving the mounting shaft (1) to lift and lower, and a first servo motor (3) for driving the mounting shaft (1) to rotate, characterized in that: A base (4) is provided below the mounting shaft (1); a detection mechanism (5) is provided on the base (4), the detection mechanism (5) comprising a slider (51) slidably engaged with the base (4); a friction plate (52) is detachably provided on the slider (51); a first pressure sensor (53) is provided between the friction plate (52) and the slider (51); a spring (54) is provided at one end of the slider (51) in the sliding direction; a push plate (55) connected to the spring (54) is slidably provided on the base (4), and a pressure plate (56) is fixedly provided; a second pressure sensor (57) is provided between the push plate (55) and the pressure plate (56); The apparatus further comprises a spray mechanism (6), the spray mechanism (6) comprising a crossbeam (61) disposed above the friction plate (52) and a displacement drive mechanism (62) for driving the crossbeam (61) to reciprocate along the sliding direction of the slider (51), a water flow channel (611) being provided inside the crossbeam (61), the water inlet end of the water flow channel (611) being connected to a water source via a pump, and the water outlet end being connected to a nozzle (612), the nozzle (612) being directly facing the friction plate (52); The displacement drive mechanism (62) includes a screw rod (621) and a sliding rod (622) arranged on both sides of the sliding direction of the slider (51); the base (4) is provided with a first bracket (623) rotatably connected to the screw rod (621) and a second bracket (624) fixedly connected to the sliding rod (622); the screw rod (621) is provided with a nut seat (625) connected to the crossbeam (61); the sliding rod (622) is provided with a sliding block (626) connected to the crossbeam (61); the screw rod (621) is connected to the rotation drive mechanism (63); The rotary drive mechanism (63) comprises a second gear (631) provided on the mounting shaft (1) and a first rotating shaft (632), a second rotating shaft (633) and a third rotating shaft (634) rotatably provided on the gantry (21). The first rotating shaft (632) is located directly above the second gear (631) and is provided with a first sprocket (6321) and a third gear (6322) capable of meshing with the second gear (631). The second rotating shaft (633) is provided with a second sprocket (6331). ) and a third sprocket (6332), a fourth sprocket (6341) and a first bevel gear (6342) are provided on the third rotating shaft (634), a first chain (635) is horizontally provided between the first sprocket (6321) and the second sprocket (6331), a second chain (636) is vertically provided between the third sprocket (6332) and the fourth sprocket (6341), and a second bevel gear (637) meshing with the first bevel gear (6342) is provided on the lead screw (621).

2. A tire anti-skid detection device according to claim 1, characterized in that: The mounting shaft (1) includes a rotating shaft (11) connected to a first servo motor (3) and a mounting end (12) for fixing a tire; the lifting drive mechanism (2) includes a gantry (21), a hydraulic cylinder (22) is provided on the top of the gantry (21), a piston rod of the hydraulic cylinder (22) is connected to a lifting block (23), and the mounting shaft (1) can be rotated through the lifting block (23) and connected to the first servo motor (3) fixed on the lifting block (23); the base (4) includes a bottom plate (41), one end of the bottom plate (41) is provided with a front end plate (42), the other end is provided with a rear end plate (43), the top is provided with a slide groove (44) that cooperates with a slider (51), and a guide rod (45) that slides through the slider (51) is provided between the front end plate (42) and the rear end plate (43).

3. A tire anti-skid detection device according to claim 2, characterized in that: The slider (51) comprises a slider body (511) that is slidably engaged with the base (4); a rectangular groove (5111) is provided on the upper end surface of the slider body (511); a first pressure sensor (53) is provided at the bottom of the rectangular groove (5111); a rectangular damping ring (512) is fixedly provided on the inner side wall; a plurality of damping protrusions (5121) are equidistantly provided on the inner side wall of the damping ring (512); and the friction plate (52) can be inserted into the damping ring (512).

4. A tire anti-skid detection device according to claim 3, characterized in that: The friction plate (52) comprises a support plate (521). The upper end surface of the support plate (521) is provided with a mounting groove (5211). A friction plate (522) is provided in the mounting groove (5211). Bolts (523) connect and fix the friction plate (522) and the support plate (521).

5. A tire anti-skid detection device according to claim 4, characterized in that: The detection mechanism (5) further includes a preload adjustment mechanism (58), the preload adjustment mechanism (58) including a threaded rod (581) fixedly connected to the pressure plate (56), a rotating drum (582) sleeved on the outside of the threaded rod (581) and rotatably connected to the base (4), and a second servo motor (583) provided on the base (4), wherein the inner side wall of the rotating drum (582) is provided with a thread matching the threaded rod (581), and the outer side wall is provided with a gear ring (584), and the output end of the second servo motor (583) is provided with a first gear (585) meshing with the gear ring (584).

6. A tire anti-skid detection device according to claim 5, characterized in that: The upper end surface of the friction plate (52) is lower than the upper end surface of the rectangular groove (5111); an annular water collecting groove (5112) is provided at the bottom of the rectangular groove (5111); a gap formed by two adjacent damping protrusions (5121) on the damping ring (512) is communicated with the water collecting groove (5112); a drainage outlet (5113) is provided on the side wall of the water collecting groove (5112); an air flow channel (613) is provided inside the crossbeam (61); the air flow channel (613) is connected to an air supply system; an air outlet (614) is provided at the bottom of the crossbeam (61) and is communicated with the air flow channel (613); the air outlet (614) faces the friction plate (52).

7. A tire anti-skid performance detection method, characterized in that: Testing using the tire anti-skid property testing device according to any one of claims 1 to 6 comprises the following steps: Step S1, connecting the lifting drive mechanism (2), the first servo motor (3) and the detection mechanism (5) to the controller, and the controller is connected to the display; Step S2, adjusting the distance between the pressure plate (56) and the slider (51) so that the spring (54) is in a compressed state and has a preload force. When the preload force detected by the second pressure sensor (57) reaches a set value, the preload force adjustment ends. At this time, the preload force pushes the slider (51) to stop at the end away from the pressure plate (56), pushing the push plate (55) close to the pressure plate (56); Step S3, fixing the tire on the mounting shaft (1), at which point the tire is located above the friction plate (52) and close to one end of the pressure plate (56), the lifting drive mechanism (2) drives the mounting shaft (1) downward, causing the tire to contact the friction plate (52), and detecting the positive pressure of the tire on the friction plate (52) through the first pressure sensor (53). When the positive pressure reaches a set value, the tire stops pressing downward; Step S4, starting the first servo motor (3), the tire rotates along with the mounting shaft (1), the friction force generated between the tire and the friction plate (52) drives the slider (51) to move in a direction close to the pressure plate (56), the spring (54) is further compressed, and pressure is applied to the pressure plate (56) through the push plate (55), and the second pressure sensor (57) detects the pressure of the slider (51). When the pressure value falls within the preset qualified product parameter range, the anti-skid performance of the tire meets the requirements; Step S5: After the detection is completed, the first servo motor (3) is turned off, and the lifting drive mechanism (2) drives the mounting shaft (1) to rise, so that the tire is away from the friction plate (52). At this time, the slider (51) is reset to the initial position under the push of the spring (54).

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