A device for measuring wear of automobile wheels

Abstract

The present invention belongs to the technical field of wheel wear detection equipment, and specifically is a wear measurement equipment for automobile wheels, comprising a plurality of pairs of resistance value changers, wherein the plurality of pairs of resistance value changers are fixedly connected with hollow clamping plates on the outside, the top of the hollow clamping plates is fixedly connected with a hollow telescopic plate, the outside of the hollow telescopic plate is slidably connected with a hollow support plate, the outside of the plurality of hollow support plates are fixedly connected with a mounting frame, the mounting frame is rotatably connected with a rotating disk inside, the top of the rotating disk is fixedly connected with a transmission rod, the transmission rod passes through the mounting frame, and the top of the transmission rod is fixedly connected with a threaded rod; the hollow clamping plates, the hollow telescopic plates and the hollow support plates cooperate with each other, so that tires of different sizes can be adapted for detection, and at the same time, by setting a plurality of resistance value changers, the wear degree of different points of the tire can be detected at the same time, without the need to detect everywhere, thereby improving the detection efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor rods, in particular to a device for measuring the wear of automobile wheels. Background Art

[0002] The wear of car wheels is the wear of car tires. As a component that directly contacts the road surface, car tires not only bear the weight of the car, but also work with the car suspension to mitigate the impact of the car when driving. This leads to high daily wear of tires. As the tires gradually wear, the traction performance, braking performance and passing performance of the car will gradually decrease. Therefore, good tire condition is an important prerequisite for safe driving. In order to ensure the safe driving of the vehicle, it is necessary to monitor the wear of the tires frequently. Once the tire wear is too high, it is necessary to replace the tire in time.

[0003] The prior art also proposes solutions for tire wear detection. For example, a Chinese patent with announcement number CN114659449B discloses a tire wear detection device and detection method. The technology proposes to remove the tire, place it on a special testing table, and then clean the tire before performing wear detection. By combining it with a cleaning mechanism, the accuracy of the detection can be improved.

[0004] The above technical solution requires the tires to be removed for monitoring when performing tire wear detection. For drivers, this detection method is very troublesome and requires frequent removal and installation of tires. Especially for freight drivers, freight vehicles often have multiple tires. If they are detected one by one, it will take a lot of time. Similarly, the prior art also has equipment that automatically detects tire wear through laser scanning or visual methods, but this requires the driver to drive to a special inspection center, and most drivers will not go to the inspection center specifically before the vehicle breaks down.

[0005] The prior art also proposes to detect tire wear by means of a simple handheld device. The principle is to place the device on the tire to be tested and align it with the tire pattern, and then press the device down to extend a probe from the inside. As the probe extends, the resistance value in the device changes. The depth of the tire pattern is calculated by the change in resistance value, and then the wear of the tire is deduced. However, when using this simple device, the driver needs to turn the tire of the vehicle, that is, the tire is staggered with the vehicle body, so as to leave detection space for the device. At the same time, in order to improve the accuracy of the detection, it is often necessary to perform multiple detections at different positions on the same tire, which requires the driver to constantly start the vehicle and get off the vehicle for detection. Therefore, it is not convenient in actual use.

[0006] To this end, the present invention provides a device for measuring the wear of automobile wheels. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: the present invention is a kind of automobile wheel wear measuring equipment, including multiple pairs of resistance changers, multiple pairs of resistance changers are fixedly connected to the outside of hollow clamps, the top of the hollow clamps is fixedly connected to a hollow telescopic plate, the outside of the hollow telescopic plate is slidably connected to a hollow support plate, multiple hollow support plates are fixedly connected to the outside of a mounting frame, the mounting frame is rotatably connected to a rotating disk inside, the top of the rotating disk is fixedly connected to a transmission rod, the transmission rod passes through the mounting frame, the top of the transmission rod is fixedly connected to a threaded rod, and the top of the threaded rod is fixedly connected to a handle; it also includes a contraction component, the contraction component includes a steel cable, one end of the steel cable is fixedly connected to the rotating disk, and the contraction component drives the hollow telescopic plate to slide inside the hollow support plate through the steel cable.

[0009] Preferably, the retraction assembly also includes a sliding block, which is slidably connected to the inside of the hollow telescopic plate, a No. 1 spring is fixedly connected between the sliding block and the inner wall of the hollow telescopic plate, the end of the steel cable away from the rotating disk passes through the hollow telescopic plate and is fixedly connected to the sliding block, the end of the hollow telescopic plate close to the rotating disk is fixedly connected to a No. 2 spring, and the end of the No. 2 spring away from the hollow telescopic plate is fixedly connected to the hollow support plate.

[0010] Preferably, the elastic coefficient of the No. 2 spring is smaller than the elastic coefficient of the No. 1 spring, the sliding block is fixedly connected to a steel rope on the side away from the No. 1 spring, a limiting rod is arranged inside the hollow splint, the steel rope passes through the hollow telescopic plate and the hollow splint in turn and is fixedly connected to the limiting rod, an extrusion block is fixedly connected to the end of the limiting rod away from the steel rope, a plurality of elastic ropes are fixedly connected between the extrusion block and the hollow splint, the end of the extrusion block away from the elastic rope is in the shape of a boss, a touch button is slidably connected to the inside of the hollow splint and above the limiting rod, the bottom end of the touch button is inclined and matched with the extrusion block, and the touch button is electrically connected to the resistance changer.

[0011] Preferably, a cleaning assembly is further provided inside the hollow splint, and the cleaning assembly includes a rotating plate, and an extension plate is fixedly connected to the end of the rotating plate away from the steel rope, and a through groove adapted to the extension plate is opened inside the hollow splint, and a plurality of hooks are fixedly connected to the end of the extension plate away from the rotating plate, and the central axis of the resistance changer is in the same straight line as the central axis of the through groove, and a rotating assembly is provided outside the rotating plate, and the rotating assembly is used to drive the rotating plate to rotate.

[0012] Preferably, the rotating assembly includes a rotating ring, the rotating plate is rotatably connected to the rotating ring, the rotating ring is fixedly connected to the inner wall of the hollow splint through a connecting rod, the rotating assembly also includes a spiral guide block, the spiral guide block is fixedly connected to the outside of the limit rod, the interior of the rotating plate is provided with a slot adapted to the spiral guide block, and the rotating plate is slidably connected to the spiral guide block.

[0013] Preferably, the outside of the threaded rod is connected to a limit clamp plate via a threaded connection, both sides of the limit clamp plate are connected through guide rods, the bottom end of the guide rod is fixedly connected to the mounting frame via a bracket, and a locking assembly is provided inside the guide rod, and the locking assembly is used to lock the limit clamp plate.

[0014] Preferably, the locking assembly includes a group of reset support blocks and multiple groups of descending support blocks, the descending support blocks and the reset support blocks are both in the shape of right-angle fans, the right-angled sides of the descending support blocks are designed upward, and the right-angled sides of the reset support blocks are designed downward, and a reset assembly is arranged inside the guide rod, and the reset assembly is used to drive the descending support blocks and the reset support blocks to reset.

[0015] Preferably, the reset assembly includes a reset rod, a group of the reset support blocks and multiple groups of descending support blocks are rotationally connected to the reset rod through a torsion spring, the reset rod is slidingly connected to the guide rod, and a reset spring is fixedly connected between the reset rod and the guide rod, and a plurality of clearance grooves are provided on the surface of the guide rod, and the plurality of clearance grooves correspond one-to-one and are adapted to the multiple groups of descending support blocks.

[0016] Preferably, the hollow support plate is rotatably connected to a pair of guide wheels inside, the steel cable passes through the pair of guide wheels and is fixedly connected to the rotating disk, the hollow telescopic plate is fixedly connected to an arc guide block inside, and the steel cable passes through the arc guide block and is fixedly connected to the limit rod.

[0017] Preferably, a digital display screen is fixedly connected to the outside of the limit clamping plate, and the digital display screen is electrically connected to a plurality of resistance value changers through internal circuits.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The automobile wheel wear measuring device described in the present invention can adapt to tires of different sizes for detection by cooperating with each other through the hollow clamping plate, the hollow telescopic plate, and the hollow supporting plate. At the same time, by setting a plurality of resistance value changers, the wear of different points of the tire can be detected at the same time, without the need to detect one place at a time, thereby improving the detection efficiency.

[0020] 2. The present invention relates to a vehicle wheel wear measuring device, in which the rotating plate rotates to drive the extension plate to rotate, and the extension plate rotates to drive the hook to rotate. During the rotation of the hook, the interior of the tread groove is cleaned to remove debris inside the tread groove, thereby improving the accuracy of the resistance changer detection result, thereby improving the measurement accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a working state diagram of the present invention;

[0023] Figure 2 is a stereogram of the present invention;

[0024] Figure 3 It is a front view of the present invention;

[0025] Figure 4 This is a schematic diagram of the limit card structure in the present invention

[0026] Figure 5 It is a schematic diagram of the structure of the mounting frame in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the rotating disk in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the hollow support plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the hollow telescopic plate of the present invention;

[0030] Fig. 9 It is a schematic diagram of the hollow splint structure of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the arc-shaped guide block in the present invention;

[0032] Fig.11 It is a schematic diagram of the limit rod structure in the present invention;

[0033] Fig.12 The present invention Figure 2 A is an enlarged schematic diagram;

[0034] Fig.13 It is a schematic diagram of the reset pull rod structure in the present invention.

[0035] In the figure: 1. resistance changer; 2. hollow splint; 3. hollow telescopic plate; 4. hollow support plate; 5. rotating disk; 6. mounting frame; 7. transmission rod; 8. threaded rod; 9. grip; 10. steel cable; 11. sliding block; 12. spring No. 1; 13. spring No. 2; 14. steel rope; 15. limit rod; 16. extrusion block; 17. elastic rope; 18. touch button; 19. spiral guide block; 20. rotating plate; 21. rotating ring; 22. extension plate; 23. hook; 24. limit card plate; 25. guide rod; 26. reset rod; 27. descending support block; 28. reset support block; 29. ​​reset spring; 30. clearance groove; 31. guide wheel; 32. arc guide block; 33. digital display screen. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figures 1 to 11 As shown, a vehicle wheel wear measuring device according to an embodiment of the present invention comprises a plurality of pairs of resistance changers 1, the plurality of pairs of resistance changers 1 are fixedly connected to the outside with hollow clamping plates 2, the top of the hollow clamping plates 2 are fixedly connected to hollow telescopic plates 3, the outside of the hollow telescopic plates 3 are slidably connected to hollow support plates 4, the outside of the plurality of hollow support plates 4 are fixedly connected to mounting frames 6, the inside of the mounting frames 6 is rotatably connected to a rotating disk 5, the top of the rotating disk 5 is fixedly connected to a transmission rod 7, the transmission rod 7 passes through the mounting frame 6, the top of the transmission rod 7 is fixedly connected to a threaded rod 8, the top of the threaded rod 8 is fixedly connected to a handle 9;

[0038] It also includes a contraction component, which includes a steel cable 10. One end of the steel cable 10 is fixedly connected to the rotating disk 5. The contraction component drives the hollow telescopic plate 3 to slide inside the hollow support plate 4 through the steel cable 10.

[0039] During operation: The measuring device described in the present application is designed to be portable. When in use, the device is taken out, and then the vehicle is stopped and the handbrake is pulled up for use. When in use, the driver first needs to hold the handle 9 and rotate it. After the handle 9 is rotated, it will be transmitted through the threaded rod 8 and the transmission rod 7 to drive the rotating disk 5 to rotate. After the rotating disk 5 is rotated, it will pull the steel cable 10 to move, thereby triggering the contraction component. At this time, the contraction component drives the hollow telescopic plate 3 to slide inside the hollow support plate 4. The movement of the hollow telescopic plate 3 drives the hollow plywood 2 to move, so that the position between the multiple hollow plywood 2 can be adjusted. At this time, the initial adjustment is to make the distance between the multiple hollow plywood 2 greater than the diameter of the tire and less than the gap between the car body and the tire. That is, at this time, the distance between the hollow plywood 2 needs to be adjusted to facilitate the insertion of the device between the car and the tire; after the adjustment is completed, the device is placed on the outside of the tire, and then the handle 9 is continued to be rotated to further drive the hollow telescopic plate 3 to slide inside the hollow support plate 4 until the hollow plywood 2 fits the surface of the tire; through A plurality of hollow telescopic plates 3 and hollow support plates 4 are designed to be contracted at the same time, so that the measuring device can automatically complete the centering and positioning of the tire without deliberate centering, which is simple and practical and also improves the accuracy of subsequent tire detection; and after the hollow plywood 2 is completely fitted with the tire surface, the driver needs to fine-tune the position of the hollow plywood 2 so that the probe inside the resistance changer 1 is aimed at the tire pattern. After the probe inside the resistance changer 1 is facing the tire pattern, multiple resistance changers 1 are started at the same time to complete the depth detection of the tire pattern, that is, to detect the wear of the tire; through the measuring device described in the present application, first of all, the tire wear detection can be completed without reaching the designated area, and there is no need to change tires, let alone frequently adjust the tire position; the measuring device described in the present application can realize multi-point detection of tires at one time, which is more efficient and more convenient than traditional manual measuring equipment; at the same time, the design of the hollow telescopic plate 3 and the hollow support plate 4 enables the device to be applicable to tires of different sizes, and has a wider range of applications;

[0040] It should be noted that the resistance changer 1 described in the embodiment of the present invention is a prior art, which can be in the form of a motor cooperating to rotate the screw nut structure, a probe slidably connected to the screw, a paddle installed on the probe, and a sliding rheostat slidably connected to the outside of the paddle. When started, the motor drives the screw to rotate, thereby driving the probe to slide. At the same time, the paddle slides on the sliding rheostat to adjust the resistance of the sliding rheostat. The probe will eventually contact the tire. Due to the different wear degrees of different tires, the sliding length of the probe is also inconsistent, which makes the resistance change of the sliding rheostat inconsistent. In this way, the extension length of the probe is calculated by monitoring the resistance value of the sliding rheostat, and then the depth of the tire tread groove is calculated, thereby calculating the wear degree of the tire.

[0041] like Figures 1 to 11 As shown, the contraction assembly also includes a sliding block 11, which is slidably connected to the inside of the hollow telescopic plate 3, and a No. 1 spring 12 is fixedly connected between the sliding block 11 and the inner wall of the hollow telescopic plate 3, and the end of the steel cable 10 away from the rotating disk 5 passes through the hollow telescopic plate 3 and is fixedly connected to the sliding block 11, and the end of the hollow telescopic plate 3 close to the rotating disk 5 is fixedly connected to a No. 2 spring 13, and the end of the No. 2 spring 13 away from the hollow telescopic plate 3 is fixedly connected to the hollow support plate 4.

[0042] During operation: as the rotating disk 5 rotates, it will simultaneously pull the steel cable 10 and wind the steel cable 10. As the steel cable 10 is gradually wound, the steel cable 10 will pull the sliding block 11 to compress the No. 1 spring 12 and then slide. At this time, since the hollow telescopic plate 3 and the hollow support plate 4 are slidingly connected, part of the pulling force will be transmitted to the hollow telescopic plate 3, thereby driving the hollow telescopic plate 3 to compress the No. 2 spring 13 and then slide inside the hollow support plate 4. By designing multiple groups of steel cables 10 to be connected to the rotating disk 5 together, the effect of simultaneously contracting multiple hollow telescopic plates 3 is achieved, thereby having the ability of automatic centering, and achieving the effect of not requiring deliberate positioning.

[0043] like Figures 1 to 11 As shown, the elastic coefficient of the No. 2 spring 13 is smaller than the elastic coefficient of the No. 1 spring 12, the sliding block 11 is fixedly connected to the side away from the No. 1 spring 12 with a steel rope 14, a limiting rod 15 is arranged inside the hollow splint 2, the steel rope 14 passes through the hollow telescopic plate 3 and the hollow splint 2 in turn and is fixedly connected to the limiting rod 15, an end of the limiting rod 15 away from the steel rope 14 is fixedly connected to an extrusion block 16, a plurality of elastic ropes 17 are fixedly connected between the extrusion block 16 and the hollow splint 2, the end of the extrusion block 16 away from the elastic rope 17 is in the shape of a boss, a touch button 18 is slidably connected inside the hollow splint 2 and above the limiting rod 15, the bottom end of the touch button 18 is inclined and matched with the extrusion block 16, and the touch button 18 is electrically connected to the resistance changer 1.

[0044] During operation: during the movement of the sliding block 11 pulled by the steel cable 10, the magnitude of the force exerted on the No. 1 spring 12 and the No. 2 spring 13 is the same. Since the elastic coefficient of the No. 2 spring 13 is smaller than that of the No. 1 spring 12, the No. 2 spring 13 contracts to a greater extent during the movement of the steel cable 10. When the hollow plywood 2 is completely in contact with the tire surface, the hollow plywood 2 is in contact with the tire, thereby limiting the position of the hollow telescopic plate 3. At this time, the hollow telescopic plate 3 can no longer compress the No. 2 spring 13. At this time, the handle 9 continues to be rotated to drive the rotating disk 5 to rotate, so that the steel cable 10 continues to apply tension to the sliding block 11. At this time, under the action of this tension, the sliding block 11 will compress the No. 1 spring 12 to slide. The sliding of the sliding block 11 drives the steel cable 14 to move. The movement of the steel cable 14 drives the extrusion block 16 to move through the limiting rod 15. At this time, the extrusion block 16 stretches the elastic rope 17 to deform it and then moves inside the hollow plywood 2 Sliding, when the squeezing block 16 slides to contact with the touch button 18, it will squeeze the touch button 18 and push the touch button 18 upward until the touch button 18 is fully pressed; it should be noted that when the touch button 18 is fully pressed, its bottom end will still extend out of the interior of the hollow plywood 2 and contact with the squeezing block 16. At this time, since the squeezing block 16 is blocked by the touch button 18, it cannot be pulled even if a greater force is applied, which has a self-locking effect; at the same time, since the touch button 18 is fully pressed, the resistance changer 1 is powered on, so that multiple resistance changers 1 are automatically turned on at the same time, further improving the measurement efficiency; it should also be noted that when it comes to the elastic coefficients of the No. 1 spring 12 and the No. 2 spring 13, it is necessary to meet the requirement that when the hollow plywood 2 is fully fitted to the tire, the No. 1 spring 12 still has enough compression space, and the touch button 18 is not in contact with the squeezing block 16 at this time.

[0045] like Figures 1 to 11 As shown, a cleaning assembly is also provided inside the hollow splint 2, and the cleaning assembly includes a rotating plate 20, and an extension plate 22 is fixedly connected to the end of the rotating plate 20 away from the steel rope 14, and a through groove compatible with the extension plate 22 is opened inside the hollow splint 2, and a plurality of hooks 23 are fixedly connected to the end of the extension plate 22 away from the rotating plate 20, and the central axis of the resistance changer 1 is in the same straight line as the central axis of the through groove, and a rotating assembly is provided outside the rotating plate 20, and the rotating assembly is used to drive the rotating plate 20 to rotate.

[0046] During operation: before the resistance changer 1 performs detection, the rotating component will first drive the rotating plate 20 to rotate, and the rotation of the rotating plate 20 will drive the extension plate 22 to rotate, and the rotation of the extension plate 22 will drive the hook 23 to rotate. Since the central axis of the resistance changer 1 is in the same straight line as the central axis of the through groove, and the through groove is compatible with the extension plate 22, the probe of the resistance changer 1 can be aligned with the tread groove of the tire by aligning the through groove with the tread groove of the tire during detection, which facilitates positioning; at the same time, during the rotation of the hook 23, it will also slide over the tread groove of the tire, thereby cleaning the inside of the tread groove, removing debris inside the tread groove, improving the accuracy of the detection result of the resistance changer 1, and thereby improving the accuracy of the equipment measurement.

[0047] like Figures 9 to 11 As shown, the rotating assembly includes a rotating ring 21, the rotating plate 20 is rotatably connected to the rotating ring 21, the rotating ring 21 is fixedly connected to the inner wall of the hollow splint 2 through a connecting rod, and the rotating assembly also includes a spiral guide block 19, the spiral guide block 19 is fixedly connected to the outside of the limit rod 15, the interior of the rotating plate 20 is provided with a slot adapted to the spiral guide block 19, and the rotating plate 20 is slidably connected to the spiral guide block 19.

[0048] During operation: when the steel rope 14 pulls the limit rod 15 to move, it will also drive the spiral guide block 19 to move. Since the rotating plate 20 is slidably connected to the spiral guide block 19, the rotating plate 20 will move along the path of the spiral guide block 19 at this time, that is, the rotating plate 20 will rotate on the rotating ring 21 along the path of the spiral guide block 19 at this time. Through the design of the spiral guide block 19, the cleaning work before the tire inspection can be completed without additional driving force, thereby improving the measurement accuracy. It should be noted that in actual design, for tires of different sizes, sufficient space should be left for the length between the spiral guide block 19 and the rotating plate 20, that is, the design should meet the requirement that the spiral guide block 19 and the rotating plate 20 are not in contact before the hollow plywood 2 is not attached to the tire, and when the touch button 18 is in contact with the extrusion block 16, the rotating plate 20 rotates at least 150 degrees under the action of the spiral guide block 19.

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.12 and Fig.13 As shown, the outside of the threaded rod 8 is connected to a limit clamp plate 24 through a threaded connection, and guide rods 25 are connected on both sides of the limit clamp plate 24. The bottom end of the guide rod 25 is fixedly connected to the mounting frame 6 through a bracket, and a locking assembly is arranged inside the guide rod 25, and the locking assembly is used to lock the limit clamp plate 24.

[0050] During operation: when the driver holds the handle 9 and rotates it, there may be a situation where the force is lost, which may cause the equipment to reverse and loosen the tire; in this embodiment, by designing the limit card plate 24, the handle 9 will drive the threaded rod 8 to rotate when it rotates, and the rotation of the threaded rod 8 will drive the limit card plate 24 to slide upward along the guide rod 25 until the limit card plate 24 contacts the locking assembly. The limit card plate 24 is supported by the locking assembly, which can effectively prevent the limit card plate 24 from sliding downward, thereby avoiding the threaded rod 8 from reversing, allowing the driver to have time to rest and can let go to adjust the overall position of the equipment during this period.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.12 and Fig.13 As shown, the locking assembly includes a group of reset support blocks 28 and multiple groups of descending support blocks 27, the descending support blocks 27 and the reset support blocks 28 are both in the shape of right-angled sectors, the right-angled sides of the descending support blocks 27 are designed upward, and the right-angled sides of the reset support blocks 28 are designed downward, and a reset assembly is arranged inside the guide rod 25, and the reset assembly is used to drive the descending support blocks 27 and the reset support blocks 28 to reset;

[0052] The reset assembly includes a reset rod 26, a group of reset support blocks 28 and multiple groups of descending support blocks 27 are all rotatably connected to the reset rod 26 through a torsion spring, the reset rod 26 is slidably connected to the guide rod 25, and a reset spring 29 is fixedly connected between the reset rod 26 and the guide rod 25, and a plurality of make way grooves 30 are opened on the surface of the guide rod 25, and the plurality of make way grooves 30 correspond one-to-one and are adapted to the multiple groups of descending support blocks 27.

[0053] When working: during the sliding process of the limit card plate 24, it will gradually contact the lowering support block 27 and squeeze the lowering support block 27 to compress the torsion spring and then rotate. After the rotation, the lowering support block 27 will retract into the inside of the guide rod 25, and the limit card plate 24 can slide normally. When the limit card plate 24 slides past the position of the lowering support block 27, the lowering support block 27 is reset and popped out under the action of the torsion spring. At this time, the right-angled side of the lowering support block 27 can support the limit card plate 24, thereby achieving a locking effect and preventing the limit card plate 24 from sliding down. After the detection is completed, the lowering support block 27 needs to be reset. At this time, the driver needs to manually pull the reset rod 26. After the reset rod 26 is pulled, the reset spring 29 will be stretched to deform it so that it can slide inside the guide rod 25. When the reset rod 26 is pulled, the reset support block 28 will compress the torsion spring under the action of force and shrink into the inside of the guide rod 25, and the lowering support block 27 will slide into the make way slot 30. When the lowering support block 27 completely enters the make way slot 30, the reset rod 26 is manually rotated to make the lowering support block 27 rotate in the make way slot 30, and finally the reset rod 26 is pressed again to make the lowering support block 27 compress the torsion spring and shrink into the inside of the guide rod 25 through pressure. It should be noted that in the initial state, even if the reset rod 26 is pressed down and pressure is applied, the pressure will be supported by the reset support block 28, so that the lowering support block 27 will not shrink, which effectively prevents people from accidentally touching it during use and improves the stability of equipment use.

[0054] like Figures 7 to 10 As shown, the hollow support plate 4 is rotatably connected to a pair of guide wheels 31, the steel cable 10 passes through the pair of guide wheels 31 and is fixedly connected to the rotating disk 5, the hollow telescopic plate 3 is fixedly connected to an arc guide block 32, and the steel rope 14 passes through the arc guide block 32 and is fixedly connected to the limit rod 15.

[0055] During operation: by designing the guide wheel 31 and the arc-shaped guide block 32 to limit the steel cable 10 and the steel rope 14 respectively, the service life of the equipment can be improved. At the same time, the movement path of the steel cable 10 and the steel rope 14 is planned to a certain extent, which is convenient for force transmission and improves the practicality of the equipment.

[0056] like Figures 1 to 3 As shown, a digital display screen 33 is fixedly connected to the outside of the limit clamping plate 24 , and the digital display screen 33 is electrically connected to a plurality of resistance value changers 1 through internal circuits.

[0057] During operation: It should be noted that a plurality of resistance changers 1 are connected to a data processing system through a signal line, and the data processing system is connected to a digital display screen 33 through a signal line. Through the design of the digital display screen 33, the data obtained by the data processing system can be directly fed back to the user, so as to achieve the effect of timely feedback of the test results. At the same time, the data of the plurality of resistance changers 1 are automatically summed through the data processing system, which also reduces the calculation time of the personnel.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for measuring the wear of automobile wheels, characterized in that: The invention comprises a plurality of pairs of resistance value changers (1), wherein the plurality of pairs of resistance value changers (1) are fixedly connected to hollow clamping plates (2) on the outside, the top of the hollow clamping plates (2) are fixedly connected to hollow telescopic plates (3), the outside of the hollow telescopic plates (3) are slidably connected to hollow support plates (4), the outside of the plurality of hollow support plates (4) are fixedly connected to mounting frames (6), the inside of the mounting frames (6) is rotatably connected to a rotating disk (5), the top of the rotating disk (5) is fixedly connected to a transmission rod (7), the transmission rod (7) passes through the mounting frame (6), the top of the transmission rod (7) is fixedly connected to a threaded rod (8), and the top of the threaded rod (8) is fixedly connected to a handle (9); It also includes a contraction component, the contraction component including a steel cable (10), one end of the steel cable (10) being fixedly connected to the rotating disk (5), and the contraction component drives the hollow telescopic plate (3) to slide inside the hollow support plate (4) through the steel cable (10); The retracting assembly further comprises a sliding block (11), wherein the sliding block (11) is slidably connected to the inside of the hollow telescopic plate (3), a first spring (12) is fixedly connected between the sliding block (11) and the inner wall of the hollow telescopic plate (3), an end of the steel cable (10) away from the rotating disk (5) passes through the hollow telescopic plate (3) and is fixedly connected to the sliding block (11), an end of the hollow telescopic plate (3) close to the rotating disk (5) is fixedly connected to a second spring (13), and an end of the second spring (13) away from the hollow telescopic plate (3) is fixedly connected to the hollow support plate (4); The elastic coefficient of the second spring (13) is smaller than the elastic coefficient of the first spring (12); a steel rope (14) is fixedly connected to the side of the sliding block (11) away from the first spring (12); a limit rod (15) is arranged inside the hollow clamping plate (2); the steel rope (14) passes through the hollow telescopic plate (3) and the hollow clamping plate (2) in sequence and is fixedly connected to the limit rod (15); an end of the limit rod (15) away from the steel rope (14) is fixedly connected to an extrusion rod A block (16), a plurality of elastic ropes (17) are fixedly connected between the extrusion block (16) and the hollow clamping plate (2), one end of the extrusion block (16) away from the elastic ropes (17) is in the shape of a boss, a touch button (18) is slidably connected inside the hollow clamping plate (2) and located above the limit rod (15), the bottom end of the touch button (18) is in an inclined shape and is adapted to the extrusion block (16), and the touch button (18) is electrically connected to the resistance value changer (1); The probe of the resistance changer (1) slides and eventually contacts the tire. The extended length of the probe is calculated by monitoring the resistance of the sliding rheostat of the resistance changer (1), and then the depth of the tire tread groove is calculated, thereby calculating the wear degree of the tire.

2. The vehicle wheel wear measuring device according to claim 1, characterized in that: A cleaning assembly is also provided inside the hollow clamping plate (2), and the cleaning assembly includes a rotating plate (20), and an extension plate (22) is fixedly connected to one end of the rotating plate (20) away from the steel rope (14), and a through slot matching the extension plate (22) is provided inside the hollow clamping plate (2), and a plurality of hooks (23) are fixedly connected to one end of the extension plate (22) away from the rotating plate (20), and a central axis of the resistance changer (1) and a central axis of the through slot are in the same straight line, and a rotating assembly is provided outside the rotating plate (20), and the rotating assembly is used to drive the rotating plate (20) to rotate.

3. The vehicle wheel wear measuring device according to claim 2, characterized in that: The rotating assembly comprises a rotating ring (21), the rotating plate (20) is rotatably connected to the rotating ring (21), the rotating ring (21) is fixedly connected to the inner wall of the hollow clamping plate (2) via a connecting rod, the rotating assembly further comprises a spiral guide block (19), the spiral guide block (19) is fixedly connected to the outside of the limit rod (15), a slot matching the spiral guide block (19) is provided inside the rotating plate (20), and the rotating plate (20) is slidably connected to the spiral guide block (19).

4. The vehicle wheel wear measuring device according to claim 1, characterized in that: The outside of the threaded rod (8) is connected to a limit clamping plate (24) via a threaded connection, and guide rods (25) are connected through both sides of the limit clamping plate (24). The bottom end of the guide rod (25) is fixedly connected to the mounting frame (6) via a bracket, and a locking assembly is provided inside the guide rod (25), and the locking assembly is used to lock the limit clamping plate (24).

5. The vehicle wheel wear measuring device according to claim 4, characterized in that: The locking assembly comprises a group of reset support blocks (28) and a plurality of groups of descending support blocks (27); the descending support blocks (27) and the reset support blocks (28) are both in the shape of right-angled sectors; the right-angled sides of the descending support blocks (27) are designed to face upwards, and the right-angled sides of the reset support blocks (28) are designed to face downwards; a reset assembly is arranged inside the guide rod (25); the reset assembly is used to drive the descending support blocks (27) and the reset support blocks (28) to reset.

6. The vehicle wheel wear measuring device according to claim 5, characterized in that: The reset assembly comprises a reset rod (26), a group of reset support blocks (28) and a plurality of descending support blocks (27) are all rotatably connected to the reset rod (26) via a torsion spring, the reset rod (26) is slidably connected to the guide rod (25), and a reset spring (29) is fixedly connected between the reset rod (26) and the guide rod (25), and a plurality of clearance grooves (30) are provided on the surface of the guide rod (25), and the plurality of clearance grooves (30) correspond to and match the plurality of descending support blocks (27) one by one.

7. The vehicle wheel wear measuring device according to claim 1, characterized in that: A pair of guide wheels (31) are rotatably connected inside the hollow support plate (4); the steel cable (10) passes through the pair of guide wheels (31) and is fixedly connected to the rotating disk (5); an arc-shaped guide block (32) is fixedly connected inside the hollow telescopic plate (3); and the steel rope (14) passes through the arc-shaped guide block (32) and is fixedly connected to the limit rod (15).

8. The vehicle wheel wear measuring device according to claim 4, characterized in that: A digital display screen (33) is fixedly connected to the outside of the limit clamping plate (24), and the digital display screen (33) is electrically connected to a plurality of resistance value changers (1) via internal circuits.

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