Tread depth detection apparatus

Abstract

The utility model belongs to tire detection technical field discloses a kind of tread depth detection equipment, including intermediate connecting mechanism, left wheel detection mechanism and the right wheel detection mechanism identical with left wheel detection mechanism structure, right wheel detection mechanism is connected with left wheel detection mechanism by intermediate connecting mechanism, can be synchronous to vehicle left and right tire detection;Right wheel detection mechanism contains protective shell device, its inside is equipped with control panel, press trigger device, tread detection device and cleaning device, three are electrically connected with control panel;Press trigger device sends start signal when being extruded by tire, control panel accordingly controls tread detection device to measure tread groove depth;Cleaning device and tread detection device are correspondingly arranged, can be controlled panel signal cleaning the device, avoid window transparent piece to attach dust and water stain, guarantee camera imaging and laser propagation, reduce measurement interference from the source, significantly improve detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of tire inspection technology, and in particular to a tire tread depth detection device. Background Technology

[0002] In the field of tire inspection, tread depth is a key parameter for evaluating tire performance and safety. The current mainstream inspection method relies on through-type tread depth inspection equipment. This equipment usually includes left and right wheel inspection devices with the same structure. Each device has a housing, and the tread depth inspection unit (including laser and camera) and main board are installed inside the housing. When the pressing trigger mechanism at the front of the housing is squeezed by the tire, it sends a start signal to the main board. The main board then controls the laser to emit laser light to the tire tread through the second transparent window of the upper cover. The camera then takes a picture of the laser line through the first transparent window, and then calculates the tread depth.

[0003] However, in actual use, the first and second transparent windows of the top cover plate are prone to dust and water stains, which leads to a decrease in camera imaging quality and obstruction of laser line propagation, directly affecting the accuracy of tire tread groove depth measurement and making it difficult to meet the requirements of precise detection. Utility Model Content

[0004] The main purpose of this utility model is to provide a tire tread depth detection device, which aims to solve the technical problem that the transparent window of the current through-type tire tread detection device is prone to dust and water stains, resulting in poor camera imaging and obstructed laser propagation, thus affecting the accuracy of tire tread depth measurement.

[0005] To achieve the above-mentioned utility model objectives, this utility model proposes a tire tread depth detection device, including an intermediate connecting mechanism and a left wheel detection mechanism, and a right wheel detection mechanism with the same structure as the left wheel detection mechanism, wherein the right wheel detection mechanism is connected to the left wheel detection mechanism through the intermediate connecting mechanism;

[0006] The right wheel detection mechanism includes a protective shell device, and a control board, a press trigger device, a tire tread detection device, and a cleaning device disposed within the protective shell device; the press trigger device, the tire tread detection device, and the cleaning device are electrically connected to the control board respectively;

[0007] The press trigger device is used to send a start signal to the control board when it is squeezed by the tire, and the control board is used to control the tire tread detection device to measure the tire tread groove depth according to the start signal;

[0008] The cleaning device is arranged correspondingly to the tire tread detection device, and the cleaning device is used to clean the tire tread detection device according to the control signal of the control board.

[0009] Furthermore, the protective shell device includes a main frame, an upper cover plate, and a panel. The panel is disposed inside the upper cover plate, and the upper cover plate covers the main frame. The upper cover plate is provided with a first through hole and a second through hole. The panel is provided with a third through hole and a fourth through hole. The first through hole is connected to the third through hole, and the second through hole is connected to the fourth through hole.

[0010] Furthermore, the tire tread detection device includes a detection base plate, a laser assembly, a camera assembly, and two identical transparent window assemblies;

[0011] The detection base plate is connected to the main frame, the control plate is disposed on the detection base plate, the laser component and the camera component are respectively disposed on the detection base plate and electrically connected to the control plate; the window transparent component is disposed on the side of the panel away from the upper cover plate, the two window transparent components are respectively arranged corresponding to the third through hole and the fourth through hole, and the laser component and the camera component each correspond to one window transparent component.

[0012] Furthermore, the cleaning device includes a pneumatic solenoid valve, a camera air intake assembly, and a laser air intake assembly. The detection base plate has a clearance space. The pneumatic solenoid valve is located at the top of the main frame. The camera air intake assembly and the laser air intake assembly are spaced apart at the bottom of the main frame and are respectively connected to the pneumatic solenoid valve. The camera air intake assembly and the laser air intake assembly are located within the clearance space of the detection base plate.

[0013] Furthermore, the camera air intake assembly includes a camera window air intake seat and a camera window air blowing plate, and the laser air intake assembly includes a laser window air intake seat and a laser window air blowing plate. The camera window air intake seat is disposed on the main frame and connected to the pneumatic solenoid valve. The camera window air blowing plate is disposed on the camera window air intake seat. The camera window air blowing plate overlaps the side of the panel away from the window transparent assembly and is located in the second through hole.

[0014] The laser window air inlet is mounted on the main frame and connected to the pneumatic solenoid valve. The laser window air blowing plate is mounted on the laser window air inlet and overlaps the side of the panel away from the window transparent component, and is located in the first through hole.

[0015] Furthermore, the transparent window assembly includes a lower glass base plate, a base plate sealing gasket, an upper glass pressure plate, a panel sealing gasket, and window glass;

[0016] The seat plate sealing gasket is disposed on the side of the lower glass seat plate near the panel, the upper glass pressure plate is disposed on the side of the seat plate sealing gasket away from the lower glass seat plate, the panel sealing gasket is disposed on the side of the upper glass pressure plate away from the seat plate sealing gasket, and the window glass is disposed on the side of the panel sealing gasket away from the upper glass pressure plate.

[0017] Furthermore, the camera assembly includes a camera, a camera lens mount, and a camera reflective glass. The camera lens mount is disposed on the detection base plate, and the camera reflective glass is obliquely disposed on the camera lens mount and arranged corresponding to the window transparent component corresponding to the fourth through hole. The camera is disposed on the detection base plate and arranged at a distance from the camera lens mount.

[0018] Furthermore, the laser assembly includes a laser, a laser mirror mount, and a laser reflective glass. The laser mirror mount is disposed on the detection base plate, and the laser reflective glass is obliquely disposed on the laser mirror mount, corresponding to the transparent window assembly corresponding to the third through hole. The laser is disposed on the detection base plate at a distance from the laser mirror mount.

[0019] Furthermore, the press triggering device includes a press elastic component, which includes a lower pressure bar, multiple fixed seats, and multiple sliding bearings. A receiving groove is provided on one side of the main frame, the fixed seats are disposed in the receiving groove, the sliding bearings are disposed on the fixed seats, the lower pressure bar is disposed at the end of the sliding bearing away from the fixed seats and electrically connected to the control board, and a spring connected to the lower pressure bar is sleeved on the sliding bearing.

[0020] Furthermore, the pressing trigger device also includes a lower pressure strip panel, which is disposed inside the upper cover plate. The upper cover plate is provided with a plurality of fifth through holes, which are located on the side of the second through hole away from the first through hole. The lower pressure strip panel is provided with a sixth through hole corresponding to the fifth through hole. The lower pressure strip is provided with a plurality of pressing blocks, which pass through the sixth through hole and the fifth through hole in sequence.

[0021] Beneficial effects:

[0022] This utility model discloses a tire tread depth detection device, comprising an intermediate connecting mechanism and a left wheel detection mechanism, and a right wheel detection mechanism with the same structure as the left wheel detection mechanism. The right wheel detection mechanism is connected to the left wheel detection mechanism through the intermediate connecting mechanism. The right wheel detection mechanism includes a protective shell device, and a control board, a pressing trigger device, a tire tread detection device, and a cleaning device disposed within the protective shell device. The pressing trigger device, the tire tread detection device, and the cleaning device are electrically connected to the control board. The pressing trigger device sends a start signal to the control board when it is squeezed by the tire, and the control board controls the tire tread detection device to measure the tire tread groove depth according to the start signal. The cleaning device is arranged correspondingly to the tire tread detection device, and the cleaning device cleans the tire tread detection device according to the control signal from the control board. By adding a cleaning device that is electrically connected to the control board and corresponds to the tire tread detection device inside the protective housing, the relevant components of the tire tread detection device can be cleaned in a timely manner according to the control board signal. This can effectively prevent dust and water stains from adhering to the transparent window, ensure the camera imaging quality, ensure the normal propagation of the laser, reduce measurement interference from the source, and significantly improve the accuracy of tire tread depth detection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a tire tread depth detection device according to an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the right wheel detection mechanism according to an embodiment of the present invention;

[0025] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of point A;

[0026] Figure 4 This is an embodiment of the present utility model. Figure 2 Enlarged view of point B;

[0027] Figure 5 This is a partial schematic diagram of the right wheel detection mechanism according to an embodiment of the present invention.

[0028] in:

[0029] 100. Intermediate connecting mechanism; 200. Left wheel detection mechanism; 300. Right wheel detection mechanism;

[0030] 2. Control panel;

[0031] 10. Main frame; 11. Top cover plate; 12. Panel; 13. First through hole; 14. Second through hole; 15. Third through hole; 16. Fourth through hole; 17. Fifth through hole; 18. Work indicator light; 19. Sunroof lens; 20. Limit switch;

[0032] 31. Lower pressure strip panel; 32. Sixth through hole;

[0033] 301. Lower pressure bar; 302. Fixed base; 303. Sliding bearing; 304. Receiving groove; 305. Spring; 306. Pressing block;

[0034] 40. Inspection base plate; 41. Laser assembly; 42. Camera assembly; 44. Clearance space;

[0035] 410. Laser; 411. Laser mount; 412. Laser reflective glass;

[0036] 420. Camera; 421. Camera mount; 422. Camera reflector glass;

[0037] 430. Lower glass base plate; 431. Base plate sealing gasket; 432. Upper glass pressure plate; 433. Panel sealing gasket; 434. Window glass;

[0038] 50. Pneumatic solenoid valve; 51. Camera air intake assembly; 52. Laser air intake assembly;

[0039] 510. Camera window air inlet seat; 511. Camera window air blower;

[0040] 520. Laser window air inlet seat; 521. Laser window air blowing plate.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0043] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] Reference Figures 1-5 This embodiment provides a tire tread depth detection device, including an intermediate connecting mechanism 100 and a left wheel detection mechanism 200, and a right wheel detection mechanism 300 with the same structure as the left wheel detection mechanism 200. The right wheel detection mechanism 300 is connected to the left wheel detection mechanism 200 through the intermediate connecting mechanism 100.

[0047] The right wheel detection mechanism 300 includes a protective shell device, and a control board 2, a press trigger device, a tire tread detection device, and a cleaning device disposed within the protective shell device; the press trigger device, the tire tread detection device, and the cleaning device are electrically connected to the control board 2 respectively;

[0048] The pressing trigger device is used to send a start signal to the control board 2 when it is squeezed by the tire. The control board 2 is used to control the tread detection device to measure the tread groove depth of the tire according to the start signal.

[0049] The cleaning device is arranged corresponding to the tire tread detection device, and the cleaning device is used to clean the tire tread detection device according to the control signal of the control board 2.

[0050] In the above embodiments, a tire tread depth detection device comprises three main parts: a central connecting mechanism 100, a left wheel detection mechanism 200, and a right wheel detection mechanism 300. The left wheel detection mechanism 200 and the right wheel detection mechanism 300 are structurally identical and are symmetrically connected via the central connecting mechanism 100. They are located on the left and right sides of the central connecting mechanism 100, forming an integrated device capable of simultaneously detecting the tires on both sides of a vehicle. The preferred connection method is bolted connection. Taking the right wheel detection mechanism 300 as the main functional component, it includes a protective housing and four core functional units integrated within the protective housing: a control board 2, a press trigger device, a tire tread detection device, and a cleaning device. These functional units are all housed within the internal bearing space of the right wheel detection mechanism 300 and are electrically connected via wires, forming an automated working system uniformly coordinated by the control board 2.

[0051] The pressure trigger device is located at the top front end of the right wheel detection mechanism 300, directly exposed to the vehicle's travel path, and is used to sense the tire's crushing action. When the vehicle tire travels over the device and presses against it, its internal sensing mechanism is activated, and a start signal is sent to the control board 2 as a trigger command for the entire detection process. The control board 2, as the central control unit of the system, immediately executes the preset program after receiving the start signal, coordinating the actions of subsequent devices. The tread depth detection device is the core component that performs the actual measurement task. Its detection area is located on the top surface of the device, corresponding to the tire contact area, and can complete the data acquisition of tread depth the instant the vehicle passes over it. The cleaning device is spatially arranged corresponding to the tread depth detection device, and its cleaning action is directed towards the outer side of the tread depth detection device. To ensure effective cleaning of the detection surface before or during testing, preventing dust, water stains, and other contaminants from interfering with measurements, the cleaning device ensures the cleanliness of the testing environment. The tire tread detection device then performs high-precision measurements under these cleaned conditions. The cleaning device can be activated simultaneously with the control board 2, cleaning the outer surface of the tire tread detection device. Alternatively, an interval activation program can be input into the control board 2, causing it to activate the cleaning device every two to three days. A sensor can also be installed in the protective housing to activate the cleaning device after every five vehicles have passed. Alternatively, the cleaning device can be activated directly based on the input control signal. By adding a cleaning device electrically connected to the control board 2 and corresponding to the tire tread detection device within the protective housing, the device can clean relevant components promptly based on signals from the control board 2. This effectively prevents dust and water stains from adhering to the transparent window, ensuring the image quality of the 420-degree camera, ensuring normal laser propagation, reducing measurement interference at its source, and significantly improving the accuracy of tire tread depth detection.

[0052] When a vehicle enters the detection area, the tire first presses the trigger device on top of the right wheel detection mechanism 300. The trigger device immediately sends a start signal to the control board 2. After receiving the signal, the control board 2 issues a control command synchronously or in advance to start the cleaning device to blow and clean the outer side of the tire tread detection device. After cleaning is completed or at the same time, the control board 2 starts the tire tread detection device to measure the depth of the tire tread grooves in real time. After the measurement is completed, the device automatically resets and waits for the next trigger. In addition, the control board 2 can also automatically start the cleaning device for periodic cleaning according to the preset interval time or the cumulative number of vehicles passing through the sensor.

[0053] Reference Figures 2-5In one embodiment, the protective shell device includes a main frame 10, an upper cover plate 11, and a panel 12. The panel 12 is disposed inside the upper cover plate 11, and the upper cover plate 11 covers the main frame 10. The upper cover plate 11 is provided with a first through hole 13 and a second through hole 14. The panel 12 is provided with a third through hole 15 and a fourth through hole 16. The first through hole 13 communicates with the third through hole 15, and the second through hole 14 communicates with the fourth through hole 16.

[0054] In the above embodiment, the protective shell device includes a main frame 10, an upper cover plate 11, and a panel 12. The upper cover plate 11 is located above the main frame 10 and completely covers the main frame 10. The two are connected by fasteners to form a closed top structure of the device. The panel 12 is located inside the upper cover plate 11, between the upper cover plate 11 and the main frame 10, and together with the upper cover plate 11, it forms the outer surface of the top of the device. The upper cover plate 11 has two through openings, namely a first through hole 13 and a second through hole 14. These two through holes are arranged radially, that is, perpendicular to each other or arranged at a certain angle in the horizontal direction, to provide a channel for the detection optical path. The upper cover plate 11 is also provided with spaced working indicator lights 18 and skylight lenses 19. Correspondingly, the panel 12 also has two through holes, namely a third through hole 15 and a fourth through hole 16. The positions of the holes correspond to the first through hole 13 and the second through hole 14 on the top cover plate 11, respectively. The first through hole 13 and the third through hole 15 are spatially connected to form a continuous channel through the top cover plate 11 and the panel 12. Similarly, the second through hole 14 and the fourth through hole 16 are also interconnected to form another independent channel. All four through holes are designed as rectangular holes. The length of the first through hole 13 is greater than that of the third through hole 15 connected to it, and the length of the second through hole 14 is also greater than that of the fourth through hole 16. This ensures that the through holes on the panel 12 are completely contained within the projection range of the through holes on the top cover plate 11, thereby enhancing the sealing and protection of the structure. The size of the main frame 10 is smaller than that of the top cover plate 11, ensuring that the main frame 10 can be completely covered by the top cover plate 11, thus forming a complete and closed equipment shell, effectively protecting the internal components from the influence of the external environment.

[0055] Reference Figures 2-5 In one embodiment, the tire tread detection device includes a detection base plate 40, a laser assembly 41, a camera assembly 42, and two identical transparent window assemblies.

[0056] The detection base plate 40 is connected to the main frame 10, the control plate 2 is disposed on the detection base plate 40, the laser component 41 and the camera component 42 are respectively disposed on the detection base plate 40 and electrically connected to the control plate 2; the window transparent component is disposed on the side of the panel 12 away from the upper cover plate 11, the two window transparent components are respectively arranged corresponding to the third through hole 15 and the fourth through hole 16, and the laser component 41 and the camera component 42 each correspond to one window transparent component.

[0057] In the above embodiment, the tire tread detection device includes a detection base plate 40, a laser assembly 41, a camera assembly 42, and two identical transparent window assemblies. The detection base plate 40 serves as the mounting base for the device, directly connected to the top of the main frame 10, providing a stable support platform for other components. The control board 2 is mounted on the detection base plate 40 and is responsible for signal processing and command control throughout the detection process. Both the laser assembly 41 and the camera assembly 42 are mounted on the detection base plate 40 and electrically connected to the control board 2 via wires, ensuring bidirectional transmission of control commands and data. The two transparent window assemblies are located on the side of the panel 12 away from the upper cover plate 11, i.e., at the bottom of the panel 12. The two transparent window assemblies are respectively arranged corresponding to the third through hole 15 and the fourth through hole 16 on the panel 12. Specifically, the laser assembly... 41 corresponds to one of the transparent window components. The laser beam emitted by it needs to pass through the transparent window component, the third through hole 15, and the first through hole 13 on the upper cover plate 11 in sequence, and finally be directed at the tire surface to form a laser line for measurement. The camera component 42 corresponds to the other transparent window component. Its optical acquisition path is: through the transparent window component, the fourth through hole 16, and the second through hole 14 on the upper cover plate 11, to capture the laser line image on the tire surface. The structures of the two transparent window components are exactly the same. By precisely aligning the laser component 41 and the camera component 42 with the corresponding transparent window components, the smoothness and accuracy of the laser emission and image acquisition optical paths are ensured.

[0058] Reference Figures 2-5 In one embodiment, the cleaning device includes a pneumatic solenoid valve 50, a camera air intake assembly 51, and a laser air intake assembly 52. ​​The detection base plate 40 is provided with a clearance space 44. The pneumatic solenoid valve 50 is disposed at the top of the main frame 10. The camera air intake assembly 51 and the laser air intake assembly 52 are disposed at intervals at the bottom of the main frame 10 and are respectively connected to the pneumatic solenoid valve 50. The camera air intake assembly 51 and the laser air intake assembly 52 are located within the clearance space 44 of the detection base plate 40.

[0059] In the above embodiment, the cleaning device includes a pneumatic solenoid valve 50, a camera air intake assembly 51, and a laser air intake assembly 52. ​​The pneumatic solenoid valve 50, acting as a control switch for the cleaning action, is located at the top of the main frame 10 and is used to receive control signals and control the flow of air. Both the camera air intake assembly 51 and the laser air intake assembly 52 are L-shaped structures, serving as specific units for performing the cleaning function. Structurally independent, these two air intake assemblies are spaced apart and connected to the bottom of the main frame 10, extending towards the upper cover plate 11. They are connected to the pneumatic solenoid valve 50 at the top via air passages, forming a complete airflow channel. When the pneumatic solenoid valve 50 is opened, compressed air can be sequentially delivered to the camera air intake assembly 51 and the laser air intake assembly 52, driving them to perform the cleaning action. The detection base plate 40 is specially designed with clearance spaces 44 to accommodate and position the camera air intake assembly 51 and the laser air intake assembly 52. ​​The detection base plate 40 is made of aluminum plate and has a convex-shaped structure, forming two recessed areas on its sides. That is, the clearance spaces 44 are the recessed areas on the sides of the detection base plate 40, and are adapted to the L-shaped structure of the camera air intake assembly 51 and the laser air intake assembly 50. The camera air intake assembly 51 and the laser air intake assembly 52 are respectively located and fixed in the clearance spaces 44 on these two sides, which not only avoids interference between components, but also optimizes the internal space utilization of the equipment, allowing the cleaning device to be compactly and stably integrated into the equipment. This makes it convenient to assemble or replace the cleaning device in time when it malfunctions.

[0060] Reference Figures 2-5 In one embodiment, the camera air intake assembly 51 includes a camera window air intake seat 510 and a camera window air blowing plate 511, and the laser air intake assembly 52 includes a laser window air intake seat 520 and a laser window air blowing plate 521. The camera window air intake seat 510 is disposed on the main frame 10 and connected to the pneumatic solenoid valve 50. The camera window air blowing plate 511 is disposed on the camera window air intake seat 510. The camera window air blowing plate 511 overlaps the side of the panel 12 away from the window transparent assembly and is located in the second through hole 14.

[0061] The laser window air inlet seat 520 is disposed on the main frame 10 and connected to the pneumatic solenoid valve 50. The laser window air blowing plate 521 is disposed on the laser window air inlet seat 520. The laser window air blowing plate 521 overlaps the side of the panel 12 away from the window transparent component and is located in the first through hole 13.

[0062] In the above embodiments, the camera air intake assembly 51 includes a camera window air intake seat 510 and a camera window air blowing plate 511, and the laser air intake assembly 52 includes a laser window air intake seat 520 and a laser window air blowing plate 521. The camera window air intake seat 510 and the laser window air intake seat 520 are the airflow input units corresponding to the camera assembly 42 and the laser assembly 41, respectively. Both are set on the main frame 10 and connected to the pneumatic solenoid valve 50 through air passage pipes to receive compressed air from the pneumatic solenoid valve 50. The camera window air blowing plate 511 is installed on the camera window air intake seat 510, and the internal air passages of the two are connected to ensure smooth airflow. Similarly, the laser window air blowing plate 521 is installed on the laser window air intake seat 520 to form an independent airflow channel.

[0063] Both the camera window air blower 511 and the laser window air blower 521 are attached to the side of panel 12 away from the window transparent component, i.e., located on the inner surface of panel 12, and are precisely located inside the second through hole 14 and the first through hole 13 of panel 12, respectively. This ensures that the air outlet of the air blower faces the outer edge of the window transparent component, forming an effective cleaning airflow path. Specifically, the camera window air blower 511 is located in the short side area of ​​the third through hole 15. When the airflow is ejected from the air blower, it can sweep laterally along the outer surface of the window transparent component, removing dust and water stains attached to the corresponding optical window. The laser window air blower 521 is arranged in the same way and is used to clean the optical window on the other side. The window transparent component is located at the bottom of panel 12, while the two air blowers are located at the top of panel 12. The two are spatially aligned through the through holes on panel 12, forming a precise layout of upper and lower layers and inner and outer coordination. This ensures that the cleaning airflow can act accurately and efficiently on the target area, while avoiding interference with other internal components, thus achieving reliable integration of the cleaning function.

[0064] Reference Figures 2-3 In one embodiment, the window transparency assembly includes a lower glass base plate 430, a base plate sealing gasket 431, an upper glass pressure plate 432, a panel sealing gasket 433, and a window glass 434.

[0065] The seat plate sealing gasket 431 is disposed on the side of the lower glass seat plate 430 near the panel 12, the upper glass pressure plate 432 is disposed on the side of the seat plate sealing gasket 431 away from the lower glass seat plate 430, the panel sealing gasket 433 is disposed on the side of the upper glass pressure plate 432 away from the seat plate sealing gasket 431, and the window glass 434 is disposed on the side of the panel sealing gasket 433 away from the upper glass pressure plate 432.

[0066] In the above embodiment, the transparent window assembly consists of a lower glass base plate 430, a base plate sealing gasket 431, an upper glass pressure plate 432, a panel sealing gasket 433, and a window glass 434. The components are stacked axially, and the assembly adopts a multi-layered design. The lower glass base plate 430 serves as the basic load-bearing layer of the entire assembly. A base plate sealing gasket 431, made of elastic material, is provided on the side of the lower glass base plate 430 closest to the panel 12. This gasket fills the gap between the lower glass base plate 430 and the upper components. The upper glass pressure plate 432 is located on the side of the base plate sealing gasket 431 away from the lower glass base plate 430, and has a through window inside for fixing and supporting the window glass 434. The window glass 434 is attached by adhesive. The cleaning device, securely installed inside the window with upper glass plate 432, primarily cleans dust and water stains from the outer surface of the window glass 434. The panel sealing gasket 433 is located on the side away from the upper glass plate 432, between the upper glass plate 432 and the outer panel 12. All components—the lower glass base plate 430, the base plate sealing gasket 431, the upper glass plate 432, and the panel sealing gasket 433—have corresponding mounting holes. Bolts are used to pass through these components in sequence and lock them to the bottom of the outer panel 12. The multi-layer sealing design not only ensures the stable installation of the window glass 434 but also effectively isolates the harsh external environment from the internal optical area through the double sealing gaskets, ensuring long-term stable operation of the equipment.

[0067] Reference Figures 2-5 In one embodiment, the camera assembly 42 includes a camera 420, a camera lens mount 421, and a camera reflective glass 422. The camera lens mount 421 is disposed on the detection base plate 40. The camera reflective glass 422 is obliquely disposed on the camera lens mount 421 and is arranged corresponding to the window transparent assembly corresponding to the fourth through hole 16. The camera 420 is disposed on the detection base plate 40 and is arranged at a distance from the camera lens mount 421.

[0068] In the above embodiment, the imaging assembly 42 includes a camera 420, an imaging lens mount 421, and an imaging reflective glass 422. The imaging lens mount 421 is mounted on the detection base plate 40 and adopts a right-angled triangular structure design. Its inclined surface is used to support and fix the imaging reflective glass 422. The imaging reflective glass 422 is mounted on the inclined surface of the imaging lens mount 421 at an inclined angle, preferably 45° or 60°, and is spatially arranged in correspondence with the window transparent component corresponding to the fourth through hole 16, ensuring that the image of the external tire surface can enter the interior through the optical channel. The camera 420, as an image acquisition unit, is mounted on the detection base plate 40 and maintains a certain distance from the imaging lens mount 421. Its position is in front of the inclined surface of the imaging lens mount 421 away from the vertical side, that is, the lens of the camera 420 faces the inclined surface of the imaging lens mount 421, so that the camera 420 does not directly shoot outwards, but acquires the image through the reflection of the imaging reflective glass 422. The laser line image on the tire surface first passes through the transparent window component and the through hole, and is incident on the tilted camera reflective glass 422. After reflection, it enters the lens of the camera 420 to complete image acquisition. There are two camera components 42, which are installed on the detection base plate 40 in a symmetrical and spaced manner to form a dual-channel image acquisition system. This symmetrical layout not only improves the coverage and redundancy of image acquisition, but also enhances the stability and anti-interference ability of the system.

[0069] Reference Figures 2-5 In one embodiment, the laser assembly 41 includes a laser 410, a laser mirror mount 411, and a laser reflective glass 412. The laser mirror mount 411 is disposed on the detection base plate 40. The laser reflective glass 412 is obliquely disposed on the laser mirror mount 411 and is arranged corresponding to the window transparent assembly corresponding to the third through hole 15. The laser 410 is disposed on the detection base plate 40 and is arranged at intervals from the laser mirror mount 411.

[0070] In the above embodiment, the laser assembly 41 includes a laser 410, a laser mirror mount 411, and a laser reflective glass 412. The laser mirror mount 411 is mounted on the detection base plate 40 and adopts a right-angled trapezoidal structure design. Its inclined surface is the key optical mounting surface. The laser reflective glass 412 is fixed on the inclined surface of the laser mirror mount 411 in an inclined posture and is spatially precisely aligned with the window transparent component corresponding to the third through hole 15, ensuring that the laser beam can be emitted along a predetermined path. The laser 410, as the laser source, is mounted on the detection base plate 40 and is arranged at a distance from the laser mirror mount 411 without direct connection. Its position is located in front of the inclined surface of the laser mirror mount 411 away from the vertical side, that is, the light outlet of the laser 410 faces the inclined surface of the laser mirror mount 411. The laser 410 is connected to the detection base plate 40 through a special bracket. The laser 410 is located between two adjacent camera mirror mounts 421, making full use of the space on the detection base plate 40 and realizing the compact integration of the laser emitting unit and the image acquisition unit. The laser beam emitted by the laser 410 is first projected onto the surface of the tilted laser reflective glass 412. After being reflected, the propagation direction is changed, and it passes through the transparent window component, the third through hole 15 and the first through hole 13 in sequence, and finally hits the tire surface to form a laser line for measurement. This non-direct-shooting design avoids the laser 410 being directly exposed to the external environment, improving its protection level and service life.

[0071] Reference Figures 2-5 In one embodiment, the press triggering device includes a press elastic component, which includes a lower pressure bar 301, a plurality of fixed seats 302 and a plurality of sliding bearings 303. A receiving groove 304 is provided on one side of the main frame 10. The fixed seats 302 are disposed in the receiving groove 304. The sliding bearings 303 are disposed on the fixed seats 302. The lower pressure bar 301 is disposed on the end of the sliding bearings 303 away from the fixed seats 302 and is electrically connected to the control board 2. A spring 305 connected to the lower pressure bar 301 is sleeved on the sliding bearings 303.

[0072] In the above embodiment, the pressing trigger device includes a pressing elastic component, which consists of a lower pressing bar 301, multiple fixed seats 302, and multiple sliding bearings 303. A receiving groove 304 is provided on one side of the main frame 10. This groove provides installation space and movement guidance for the pressing elastic component. The fixed seats 302 are disposed within the receiving groove 304, serving as the mounting base for the sliding bearings 303. The sliding bearings 303 are mounted on the fixed seats 302, and their structure includes a bearing housing, a linear bearing, and a sliding pin. The bearing housing is fixed within the receiving groove 304, the linear bearing is mounted on the bearing housing, and the sliding pin is slidably connected to the inner hole of the linear bearing, allowing for smooth axial reciprocating movement. The lower pressing bar 301 is located at the end of the sliding pin away from the fixed seat 302, i.e., exposed on the equipment surface, directly bearing the pressure of the tire. The two ends of the lower pressing bar 301 are respectively connected to the tops of two sliding pins, forming a U-shaped structure.

[0073] The lower pressure bar 301 is electrically connected to the control board 2. The lower pressure bar 301 is used to send a start signal to the control board 2 when it is squeezed by the tire. When it is displaced, it can send a signal to the control board 2 through electrical contacts or sensors. A spring 305 is sleeved on the sliding pin shaft. One end of the spring 305 is connected to the bottom of the linear bearing, and the other end is connected to the bottom of the lower pressure bar 301, providing elastic restoring force for the entire pressing structure. When an external force is applied, the lower pressure bar 301 drives the sliding pin shaft to slide downward in the linear bearing, compressing the spring 305. After the external force disappears, the elastic force of the spring 305 pushes the lower pressure bar 301 to reset. Multiple fixed seats 302 and sliding bearings 303 are symmetrically distributed along the length of the lower pressure bar 301. Through the coordinated design of the sliding bearings 303 and the springs 305, the smooth linear movement and reliable reset of the lower pressure bar 301 are achieved, effectively avoiding the jamming, wear, or unresponsive rebound problems that are prone to occur in traditional structures, and significantly improving the automation level and operational stability of the equipment.

[0074] Reference Figures 2-4 In one embodiment, the pressing trigger device further includes a lower pressure strip panel 31, which is disposed inside the upper cover plate 11. The upper cover plate 11 is provided with a plurality of fifth through holes 17, which are located on the side of the second through hole 14 away from the first through hole 13. The lower pressure strip panel 31 is provided with a sixth through hole 32 corresponding to the fifth through hole 17. The lower pressure strip 301 is provided with a plurality of pressing blocks 306, which sequentially pass through the sixth through hole 32 and the fifth through hole 17.

[0075] In the above embodiment, the press trigger device also includes a lower pressure strip panel 31, which is disposed inside the upper cover plate 11 and serves as a support and guide platform for the pressing block 306. The upper cover plate 11 is provided with a plurality of fifth through holes 17, which are located in the area of ​​the second through hole 14 away from the first through hole 13, i.e., the non-optical detection area at the front end of the device, to avoid interfering with normal measurement. The lower pressure strip panel 31 is provided with a sixth through hole 32 corresponding to the position of the fifth through hole 17. The lower pressure strip 301 is provided with a plurality of pressing blocks 306, which pass through the sixth through hole 32 of the lower pressure strip panel 31 and the fifth through hole 17 of the upper cover plate 11 in sequence. Their top ends protrude from the surface of the upper cover plate 11 and are directly exposed in the vehicle driving path as the trigger point for tire contact. The top of the main frame 10 is also provided with a limit switch 20 arranged corresponding to the lower pressure strip 301. When the tire rolls over the pressing block 306, the force is transmitted to the lower pressing strip 301 through the pressing block 306, causing the entire lower pressing strip 301 assembly to move downwards. The lower pressing strip 301 is electrically connected to the control board 2 through the limit switch 20. When the lower pressing strip 301 moves downwards, it directly presses the trigger end of the limit switch 20, causing the internal contacts of the limit switch 20 to close (similar to the on / off principle of a light switch), thereby sending an electrical signal to the control board 2. When this electrical signal is triggered, it indicates that the tire is in the detection position, and the control board 2 then starts the subsequent detection process. Multiple pressing blocks 306 are distributed laterally, and together with multiple sets of elastic components, the force is more evenly distributed, improving the stability and reliability of the trigger.

[0076] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A tire tread depth detection device, characterized in that, It includes a middle connecting mechanism and a left wheel detection mechanism, as well as a right wheel detection mechanism with the same structure as the left wheel detection mechanism. The right wheel detection mechanism is connected to the left wheel detection mechanism through the middle connecting mechanism. The right wheel detection mechanism includes a protective shell device, and a control board, a press trigger device, a tire tread detection device, and a cleaning device disposed within the protective shell device; the press trigger device, the tire tread detection device, and the cleaning device are electrically connected to the control board respectively; The press trigger device is used to send a start signal to the control board when it is squeezed by the tire, and the control board is used to control the tire tread detection device to measure the tire tread groove depth according to the start signal; The cleaning device is arranged correspondingly to the tire tread detection device, and the cleaning device is used to clean the tire tread detection device according to the control signal of the control board.

2. The tire tread depth detection device according to claim 1, characterized in that, The protective shell device includes a main frame, an upper cover plate, and a panel. The panel is disposed inside the upper cover plate, and the upper cover plate covers the main frame. The upper cover plate is provided with a first through hole and a second through hole. The panel is provided with a third through hole and a fourth through hole. The first through hole is connected to the third through hole, and the second through hole is connected to the fourth through hole.

3. The tire tread depth detection device according to claim 2, characterized in that, The tire tread detection device includes a detection base plate, a laser assembly, a camera assembly, and two identical transparent window assemblies. The detection base plate is connected to the main frame, the control plate is disposed on the detection base plate, the laser component and the camera component are respectively disposed on the detection base plate and electrically connected to the control plate; the window transparent component is disposed on the side of the panel away from the upper cover plate, the two window transparent components are respectively arranged corresponding to the third through hole and the fourth through hole, and the laser component and the camera component each correspond to one window transparent component.

4. The tire tread depth detection device according to claim 3, characterized in that, The cleaning device includes a pneumatic solenoid valve, a camera air intake assembly, and a laser air intake assembly. The detection base plate has a clearance space. The pneumatic solenoid valve is located at the top of the main frame. The camera air intake assembly and the laser air intake assembly are spaced apart at the bottom of the main frame and are respectively connected to the pneumatic solenoid valve. The camera air intake assembly and the laser air intake assembly are located within the clearance space of the detection base plate.

5. The tire tread depth detection device according to claim 4, characterized in that, The camera air intake assembly includes a camera window air intake seat and a camera window air blowing plate. The laser air intake assembly includes a laser window air intake seat and a laser window air blowing plate. The camera window air intake seat is disposed on the main frame and connected to the pneumatic solenoid valve. The camera window air blowing plate is disposed on the camera window air intake seat. The camera window air blowing plate overlaps the side of the panel away from the window transparent assembly and is located in the second through hole. The laser window air inlet is mounted on the main frame and connected to the pneumatic solenoid valve. The laser window air blowing plate is mounted on the laser window air inlet and overlaps the side of the panel away from the window transparent component, and is located in the first through hole.

6. The tire tread depth detection device according to claim 3, characterized in that, The transparent window assembly includes a lower glass base plate, a base plate sealing gasket, an upper glass pressure plate, a panel sealing gasket, and window glass; The seat plate sealing gasket is disposed on the side of the lower glass seat plate near the panel, the upper glass pressure plate is disposed on the side of the seat plate sealing gasket away from the lower glass seat plate, the panel sealing gasket is disposed on the side of the upper glass pressure plate away from the seat plate sealing gasket, and the window glass is disposed on the side of the panel sealing gasket away from the upper glass pressure plate.

7. The tire tread depth detection device according to claim 3, characterized in that, The camera assembly includes a camera, a camera lens mount, and a camera reflective glass. The camera lens mount is disposed on the detection base plate. The camera reflective glass is obliquely disposed on the camera lens mount and arranged corresponding to the window transparent component corresponding to the fourth through hole. The camera is disposed on the detection base plate and arranged at a distance from the camera lens mount.

8. The tire tread depth detection device according to claim 3, characterized in that, The laser assembly includes a laser, a laser mirror mount, and a laser reflective glass. The laser mirror mount is disposed on the detection base plate. The laser reflective glass is obliquely disposed on the laser mirror mount and arranged corresponding to the transparent window assembly corresponding to the third through hole. The laser is disposed on the detection base plate and arranged at intervals from the laser mirror mount.

9. The tire tread depth detection device according to claim 2, characterized in that, The press triggering device includes a press elastic component, which includes a lower pressure bar, multiple fixed seats, and multiple sliding bearings. A receiving groove is provided on one side of the main frame. The fixed seats are disposed in the receiving groove. The sliding bearings are disposed on the fixed seats. The lower pressure bar is disposed at the end of the sliding bearing away from the fixed seats and is electrically connected to the control board. A spring connected to the lower pressure bar is sleeved on the sliding bearing.

10. The tire tread depth detection device according to claim 9, characterized in that, The press trigger device further includes a lower pressure strip panel, which is disposed inside the upper cover plate. The upper cover plate is provided with a plurality of fifth through holes, which are located on the side of the second through hole away from the first through hole. The lower pressure strip panel is provided with a sixth through hole corresponding to the fifth through hole. The lower pressure strip is provided with a plurality of pressing blocks, which pass through the sixth through hole and the fifth through hole in sequence.

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