A detection device for automobile tire production

Abstract

The present invention discloses a testing device for automobile tire production, which relates to the technical field of testing devices. The device comprises a cylindrical cavity surrounded by a shell with a horizontal axis, a circular opening in communication with the cylindrical cavity being provided at the center of the front face of the shell; a sealing mechanism comprising a sealing plate and a transverse drive assembly, the transverse drive assembly being used to drive the sealing plate to move horizontally to close or open the circular opening; a tire loading mechanism comprising a vertical moving assembly slidably connected to the sealing plate, a tire fixing assembly rotatably mounted on the vertical moving assembly, and a rotary drive assembly driving the tire fixing assembly to rotate; and a road condition simulation testing mechanism comprising a ring-shaped rotating body, a locking assembly, and a gravel circulation assembly. Compared to traditional testing devices, the present invention realizes more than six types of road condition simulation tests in a single device, reduces testing costs, and reduces material waste through closed-loop gravel circulation, thus meeting green manufacturing standards.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, in particular to a detection device for automobile tire production. Background Art

[0002] During the automobile tire production process, wear resistance testing is a core link in ensuring tire quality. Traditional testing devices mostly use a single site to simulate specific working conditions (such as a drum tester to test rolling resistance and a friction platform to test wear resistance). The testing scene is fragmented and cannot reproduce the complex working conditions of gravel impact and alternating multiple road conditions on real roads.

[0003] Chinese Patent Publication No. CN117606824B discloses a wear resistance testing device for tire manufacturing. Although this patent achieves basic load simulation and local testing through a detachable road simulation plate and a liftable tire mounting assembly, it still has the following drawbacks that seriously mismatch production needs:

[0004] Low load simulation efficiency: There is a gap error in the mechanical transmission between the hydraulic cylinder and the linkage rod, which results in a long time for single load pressurization and cannot meet the beat requirements of continuous detection; road condition switching is cumbersome: the plate installation assembly relies on a multi-stage screw to adjust the height, and replacing the simulation plate requires manual operation, which seriously affects the mixed-line detection efficiency of multiple batches of tires and cannot perform dynamic tire detection; poor environmental adaptability: the open structure causes gravel to splash, and the gravel is difficult to recover, causing noise pollution and failing to meet the safety production standards of automobile factories. Summary of the Invention

[0005] The object of the present invention is to provide a detection device for automobile tire production to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0007] The present invention provides a detection device for automobile tire production, comprising:

[0008] A cylindrical cavity is formed by the housing and is arranged with its axis horizontally. A circular opening is provided at the center of the front face of the housing, communicating with the cylindrical cavity. The cylindrical cavity extends radially outward from the periphery of the circular opening to form an annular detection area. The lower half of the annular detection area is defined as the tire detection zone.

[0009] a blocking mechanism comprising a blocking plate and a transverse drive assembly, wherein the transverse drive assembly is used to drive the blocking plate to move horizontally to close or open the circular opening;

[0010] The tire loading mechanism includes a vertically movable assembly slidably connected to the blocking plate, a tire fixing assembly rotatably mounted on the vertically movable assembly, and a rotation drive assembly drivingly connected to the tire fixing assembly to drive the tire fixing assembly to rotate about its own axis;

[0011] A road condition simulation detection mechanism, comprising a ring-shaped rotating body, a locking assembly, and a gravel circulation assembly;

[0012] The annular rotating body is rotatably assembled in the annular detection area, and a first annular detection surface and a second annular detection surface of different radii are formed on the inner side thereof, wherein the first annular detection surface has detection plates with different roughness distributed along the circumference, and the second annular detection surface is arranged adjacent to the circular opening; the locking assembly is configured to limit or release the rotation of the annular rotating body; with the vertical plane passing through the central axis of the cylindrical cavity as the set plane, the gravel circulation assembly is configured to make the gravel continuously roll on the second annular detection surface from the left side to the right side of the set plane.

[0013] Furthermore, the shell consists of a cylindrical outer shell and a detachable annular side plate. One end of the cylindrical outer shell is open, and the annular side plate is installed at the opening. The inner side of the annular side plate forms the circular opening; a supporting member is provided at the bottom of the cylindrical outer shell.

[0014] Furthermore, the blocking mechanism also includes a positioning bracket arranged at the shell near the circular opening, the blocking plate is horizontally slidably installed on the positioning bracket through a sliding pair, and the size of the blocking plate along the moving direction is greater than the axial length of the circular opening; the transverse drive assembly includes a pair of electric push rods, the electric push rods are symmetrically arranged on both sides of the positioning bracket, and the telescopic ends of the electric push rods are connected to the blocking plate; the positioning bracket is provided with a photoelectric sensor for real-time monitoring of the closing position of the blocking plate.

[0015] Furthermore, the blocking plate is penetrated by a strip-shaped slide extending downward from the center of the circle, and the vertical moving component includes a sliding seat slidably assembled in the strip-shaped slide, a sealing plate vertically fixed on the top of the sliding seat, and a hydraulic push rod. The hydraulic push rod is fixed on the outside of the blocking plate, and the telescopic end of the hydraulic push rod is connected to the sliding seat.

[0016] Furthermore, the tire fixing assembly includes a rotating shaft that horizontally passes through the sliding seat and rotates with it, and a limiting structure provided on the rotating shaft near one end of the shell; the limiting structure includes a fixed plate fixed to the rotating shaft and a movable plate threadedly connected to the rotating shaft, and the movable plate is provided with an adjustment handle; the rotation drive assembly is a first servo motor fixed to the sliding seat, and the output end of the first servo motor is connected to the rotating shaft through a coupling.

[0017] Furthermore, the annular rotating body includes an internal structure and an adjustment structure connected to each other;

[0018] The internal structure includes a rotating ring coaxially arranged in the annular detection area and a circular end plate connected to the rotating ring on the side away from the circular opening; an annular gap is provided between the rotating ring and the cylindrical cavity, and rollers are evenly distributed in the annular gap; the first annular detection surface and the second annular detection surface are provided on the inner side of the rotating ring;

[0019] The adjustment structure includes a connecting shaft coaxially fixed to the side of the circular end plate away from the circular opening, and one end of the connecting shaft away from the circular end plate passes through the back side wall of the shell and is connected to a support seat rotatably matched therewith.

[0020] Furthermore, the locking assembly includes an annular rotating frame, a limiting cylinder and a pneumatic latch; the annular rotating frame is fixed to the end of the connecting shaft away from the circular end plate, and limiting holes are evenly provided on the edge of the annular rotating frame; the limiting cylinder is fixed on the support seat, and the pneumatic latch is provided in the limiting cylinder, and the pneumatic latch can be inserted into the limiting hole to lock the annular rotating body; the number of the detection plates is the same as the number of the limiting holes, and the detection plates and the limiting holes are arranged correspondingly.

[0021] Furthermore, the annular side plates on the left and right sides of the tire testing area are respectively provided with a feed port and a discharge port;

[0022] The gravel circulation assembly includes a material guide shell, a material guide plate and a spiral feeding mechanism;

[0023] The material guide shell is provided with a material storage cavity and a material guide channel, the input end of the material guide channel is connected to the material outlet, the output end of the material guide channel is connected to the material storage cavity, and the height of the material storage cavity is lower than the material outlet;

[0024] The material guide plate maintains sliding contact with the second annular detection surface, one end of the material guide plate passes through the discharge port and is fixed to the upper side wall of the material guide channel, the other end of the material guide plate extends to contact the vertical surface where the second annular detection surface and the first annular detection surface meet, a first inclined surface inclined downward is provided on the side of the material guide plate close to the set plane, and a second inclined surface inclined upward is provided on the side of the material guide plate away from the set plane;

[0025] The spiral feeding mechanism includes a feeding cylinder, a discharging cylinder, a spiral conveying shaft and a second servo motor;

[0026] The feeding barrel is arranged at an angle, and the lower end of the feeding barrel extends to the bottom of the storage chamber, and the upper end of the feeding barrel is connected to the feed port through the discharge barrel to form a closed circulation path; the spiral conveying shaft is rotatably assembled in the feeding barrel, and the second servo motor is used to drive the spiral conveying shaft to rotate.

[0027] Furthermore, it also includes a comprehensive control system, which integrates a mode switching module and a load adjustment module;

[0028] The mode switching module is used to control the locking assembly to switch between the fixed friction mode and the dynamic rolling mode;

[0029] The load adjustment module is used to automatically adjust the vertical loading force of the hydraulic push rod according to the tire specifications.

[0030] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0031] This invention realizes full-dimensional tire performance testing through integrated design and multi-mechanism collaboration. The specific advantages are as follows:

[0032] 1. This invention integrates dual-mode testing: in static mode, the ring-shaped rotor is fixed by a locking assembly, allowing the tire to quickly and directionally rub against test plates of varying roughness, accurately quantifying wear resistance and grip on various road conditions, such as ice and asphalt. In dynamic mode, the tire drives the ring-shaped rotor to passively rotate, coupled with the continuous impact of the gravel circulation assembly, to simultaneously test the combined wear characteristics of rolling friction and dynamic gravel impact.

[0033] 2. The present invention forms a closed space through the cylindrical cavity and the blocking plate, combined with the gravel guiding design of the guide plate to avoid gravel splashing and reduce noise; the modular shell supports quick disassembly and maintenance.

[0034] 3. The present invention can automatically match the vertical load according to the tire specifications. The spiral feeding mechanism controls the impact density of gravel by changing the speed, accurately simulating complex scenes such as gravel roads and cobblestone roads.

[0035] In summary, compared with traditional detection devices, the present invention can realize more than 6 types of road condition simulation detection in a single device, reduce detection costs, reduce material waste through closed-loop recycling of gravel, and meet green manufacturing standards.

[0036] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 It is a schematic cross-sectional view of the present invention;

[0040] Figure 3 It is a schematic structural diagram of the cylindrical cavity and tire loading mechanism of the present invention;

[0041] Figure 4 This is a schematic structural diagram of the blocking mechanism and tire loading mechanism of the present invention from a first perspective;

[0042] Figure 5 This is a schematic structural diagram of the blocking mechanism and tire loading mechanism of the present invention from a second perspective;

[0043] Figure 6 This is a structural schematic diagram of the tire after being loaded onto the tire loading mechanism of the present invention;

[0044] Figure 7 This is a schematic structural diagram of the housing and the annular rotating body of the present invention after being separated from each other from a first perspective;

[0045] Figure 8 This is a schematic structural diagram of the present invention from a second perspective after the housing and the annular rotating body are separated;

[0046] Figure 9 It is a schematic diagram of the structure of the gravel circulation component and the shell after being disassembled.

[0047] In the picture:

[0048] 1- cylindrical cavity; 11- housing; 111- cylindrical outer shell; 112- annular side plate; 1121- feed port; 1122- discharge port; 113- support member; 12- circular opening;

[0049] 2-blocking mechanism; 21-blocking plate; 211-strip chute; 22-lateral drive assembly; 23-positioning bracket;

[0050] 3-tire loading mechanism; 31-vertical moving assembly; 311-sliding seat; 312-sealing plate; 313-hydraulic push rod; 32-tire fixing assembly; 321-rotating shaft; 322-limiting structure; 3221-fixed disk; 3222-movable disk; 33-rotation drive assembly;

[0051] 4-Road condition simulation detection mechanism; 41-Annular rotating body; 411-First annular detection surface; 412-Second annular detection surface; 413-Detection plate; 414-Internal structure; 4141-Rotating ring; 4142-Circular end plate; 415-Adjustment structure; 4151-Connecting shaft; 4152-Support seat; 416-Roller; 42-Locking assembly; 421-Annular rotating frame; 4211-Limiting hole; 422-Limiting cylinder; 423-Pneumatic latch; 43-Gravel circulation assembly; 431-Guide housing; 4311-Storage chamber; 4312-Guide channel; 432-Guide plate; 4321-First inclined surface; 4322-Second inclined surface; 433-Spiral feeding mechanism; 4331-Feeding cylinder; 4332-Discharging cylinder; 4333-Spiral conveying shaft; 4334-Second servo motor;

[0052] 5-Tire inspection area. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0054] See also Figures 1-9 The present invention provides a detection device for automobile tire production, including a cylindrical cavity 1, a sealing mechanism 2, a tire loading mechanism 3 and a road condition simulation detection mechanism 4.

[0055] The cylindrical cavity 1 is surrounded by a housing 11 with its axis arranged horizontally. A circular opening 12 is provided at the center of the front face of the housing 11, communicating with the cylindrical cavity 1. The cylindrical cavity 1 extends radially outward from the periphery of the circular opening 12 to form an annular detection area. The lower half of the annular detection area is defined as the tire detection zone 5.

[0056] The blocking mechanism 2 includes a blocking plate 21 and a transverse driving assembly 22, wherein the transverse driving assembly 22 is used to drive the blocking plate 21 to move horizontally to close or open the circular opening 12;

[0057] Combine Figure 1 and Figure 2 As shown, the tire loading mechanism 3 includes a vertical moving assembly 31 slidably connected to the blocking plate 21, a tire fixing assembly 32 rotatably mounted on the vertical moving assembly 31, and a rotation driving assembly 33 drivingly connected to the tire fixing assembly 32 to drive the tire fixing assembly 32 to rotate around its own axis;

[0058] like Figure 2 As shown, the road condition simulation detection mechanism 4 includes an annular rotating body 41, a locking assembly 42 and a gravel circulation assembly 43;

[0059] The annular rotating body 41 is rotatably assembled in the annular detection area, and a first annular detection surface 411 and a second annular detection surface 412 of different radii are formed on the inner side of the annular rotating body 41, wherein the first annular detection surface 411 has detection plates 413 with different roughness distributed along the circumference, and the second annular detection surface 412 is arranged adjacent to the circular opening 12; the locking assembly 42 is configured to limit or release the rotation of the annular rotating body 41; with the vertical plane passing through the central axis of the cylindrical cavity as the set plane, the gravel circulation assembly 43 is configured to make the gravel continuously roll on the second annular detection surface 412 from the left side to the right side of the set plane.

[0060] Through the above settings, this device can perform dual-mode testing on tires in a sealed environment (simulated friction testing under different road conditions in static mode and rolling gravel impact simulation testing in dynamic mode), achieving full-dimensional testing of tires from basic performance to complex working conditions, solving the problem of insufficient single testing scenarios in traditional technologies. Specifically:

[0061] This device constructs a closed detection environment by forming a cylindrical cavity 1 and a sealing mechanism 2 surrounded by a shell 11, which can prevent the splashing of gravel or external interference during the detection process, and at the same time avoid the overflow of noise during the detection process. When in use, the operator only needs to fix the tire on the tire fixing component 32 of the tire loading mechanism 3, and push the sealing plate 21 horizontally through the lateral drive component 22 to automatically move the tire into the cylindrical cavity 1 for dual-mode testing.

[0062] In static mode testing, the tire performance test process is as follows: First, the tire is positioned inside the first annular testing surface 411. The annular rotating body 41 is then rotated according to the test requirements to precisely align the target roughness detection plate 413 (such as a gravel, asphalt, or ice surface simulation plate) with the tire testing area 5. The rotating body is then secured using the locking assembly 42. Once positioned, the vertical movement assembly 31 is activated to force the tire securing mechanism downward, ensuring full contact between the tire and the selected detection plate 413. Finally, the rotation drive assembly 33 drives the tire to rotate and rub against the selected detection plate 413, achieving standardized evaluation of tire performance (such as wear resistance and grip) under multiple operating conditions.

[0063] During dynamic mode testing, the dynamic tire performance evaluation process is as follows: First, the tire is positioned inside the second annular detection surface 412, and the locking assembly 42 is released, allowing the annular rotor 41 to rotate freely. The vertical drive system then presses the tire downward to ensure full contact with the second annular detection surface 412. The rotation drive assembly 33 actively drives the tire to rotate, while the friction drive drives the annular rotor 41 to passively rotate, simulating the rolling friction effects of a real road surface. During this process, the gravel circulation assembly 43 is activated, creating a closed-loop flow of gravel on the second annular detection surface 412, causing the gravel to impact the tire tread in a concentrated manner. The wear characteristics of the tire under the combined conditions of rolling friction and dynamic gravel impact are then tested.

[0064] Combine Figure 1 and Figure 7As shown, in this embodiment, the shell 11 adopts a modular design, and the shell 11 consists of a cylindrical shell 111 and a detachable annular side plate 112, wherein the cylindrical shell 111 is a horizontal axis cylindrical structure, one end of the cylindrical shell 111 is open, and a support member 113 is provided at the bottom of the cylindrical shell 111 to enhance the overall stability and prevent test vibration interference, the annular side plate 112 is installed at the open end of the cylindrical shell 111, and a circular opening 12 (tire detection entrance) is formed on the inner side of the annular side plate 112. The annular side plate 112 is detachable to facilitate maintenance or replacement of the mechanism inside the cylindrical cavity 1, and the annular detection area is surrounded by the inner wall of the cylindrical shell 111 and the annular side plate 112.

[0065] Combine Figure 1 and Figure 2 As shown, in this embodiment, the blocking mechanism 2 also includes a positioning bracket 23 arranged on the shell 11 near the circular opening 12. The positioning bracket 23 is fixed to the shell 11 near the circular opening 12 and serves as a sliding track base for the blocking plate 21 to ensure the linear accuracy of the horizontal movement of the blocking plate 21. The blocking plate 21 is connected to the positioning bracket 23 through a high-precision sliding pair to achieve horizontal sliding without offset.

[0066] The blocking plate 21 is adapted to the circular opening 12 and adopts a thickened design, that is, the width of the blocking plate 21 along the moving direction is greater than the axial length of the circular opening 12, so as to ensure that the tire can correspond to the first annular detection surface 411 and the second annular detection surface 412 respectively by changing the position of the blocking plate 21 while blocking the circular opening 12.

[0067] The lateral drive assembly 22 includes a pair of electric push rods, which are symmetrically arranged on both sides of the positioning bracket 23. The telescopic ends of the electric push rods are fixedly connected to the blocking plate 21. Bidirectional constant speed drive is achieved by synchronously controlling the electric push rods to avoid jamming or eccentric wear caused by unilateral pressure.

[0068] The positioning bracket 23 is provided with a photoelectric sensor (not shown), which monitors the position of the blocking plate 21 in real time to control the closing position of the blocking plate 21 so that the tire can correspond to the first annular detection surface 411 and the second annular detection surface 412 respectively.

[0069] Combine Figure 4-Figure 6As shown, in this embodiment, the blocking plate 21 is penetrated by a strip-shaped slide groove 211 extending downward from the center of the circle, and the vertical moving component 31 includes a sliding seat 311 slidably assembled in the strip-shaped slide groove 211, a sealing plate 312 vertically fixed on the top of the sliding seat 311, and a hydraulic push rod 313; wherein, the strip-shaped slide groove 211 serves as a movement guide track of the sliding seat 311 to limit the sliding direction of the sliding seat 311 and ensure the neutrality of the tire loading; the sealing plate 312 is tightly attached to the outer wall of the blocking plate 21 to form a dynamic sealing interface to prevent gravel and dust from entering the strip-shaped slide groove 211, and the hydraulic push rod 313 is fixed on the outside of the blocking plate 21, and the telescopic end of the hydraulic push rod 313 is connected to the sliding seat 311, and the sliding seat 311 is driven to move by the telescopic movement of the hydraulic push rod 313, thereby driving the tire to move and complete the loading of the detection surface.

[0070] Specifically, the thrust range of the hydraulic push rod 313 is 200~1000N. The system pre-stores pressure parameters for different test scenarios (such as 200N for ice surface test and 1000N for gravel road surface), and supports one-click call.

[0071] like Figure 4 As shown, in this embodiment, the tire fixing assembly 32 includes a rotating shaft 321 that horizontally passes through the sliding seat 311. The rotating shaft 321 forms a rotating pair with the sliding seat 311 through a high-precision bearing, ensuring that the tire remains stationary with the sliding seat 311 during rotation (i.e., the bearing separates the rotation and lifting motions to avoid mutual interference), thereby achieving decoupling of the lifting and rotational motions.

[0072] Furthermore, a conventional labyrinth seal structure can be provided at the bearings of the rotating shaft 321 and the sliding seat 311 to perform sealing, so as to prevent gravel particles from invading the rotating pair and causing wear.

[0073] like Figure 4 As shown, the tire fixing assembly 32 also includes a limiting structure 322; the limiting structure 322 includes a fixed plate 3221 and a movable plate 3222 threadedly connected to the rotating shaft 321, and an adjustment handle is provided on the movable plate 3222; when in use, the fixed plate 3221 serves as the tire installation reference surface, and the operator rotates the adjustment handle to move the movable plate 3222 so that the distance between the fixed plate 3221 and the movable plate 3222 matches the tire hub width, and confirms that the clamping force meets the standard (such as Figure 6 As shown in FIG, the rotation drive assembly 33 is a first servo motor fixed to the sliding seat 311, and the output end of the first servo motor is connected to the rotating shaft 321 through a coupling to drive the tire to rotate.

[0074] Combine Figure 7 and Figure 8As shown, in this embodiment, the annular rotating body 41 includes an internal structure 414 and an adjustment structure 415 that are interconnected; the internal structure 414 includes a rotating ring 4141 and a circular end plate 4142, wherein the rotating ring 4141 is coaxially arranged in the annular detection area, and the inner side of the rotating ring 4141 is provided with the first annular detection surface 411 (multi-road condition simulation) and the second annular detection surface 412 (gravel impact surface), the radii of the two are different to adapt to different test modes; the circular end plate 4142 is fixed to the side of the rotating ring 4141 away from the circular opening 12, serving as a rigid support end cover of the rotating ring 4141 to prevent radial deformation.

[0075] Furthermore, an annular gap is provided between the rotating ring 4141 and the inner wall of the cylindrical cavity 1. High-precision rollers 416 (number ≥ 24) are evenly distributed in the gap. The axes of the rollers 416 are parallel to the axis of the annular rotating body 41. The rollers 416 bear the weight of the rotating ring 4141, converting sliding friction into rolling friction, reducing the rotational resistance of the rotating ring 4141, and achieving low-power and smooth rotation.

[0076] like Figure 8 As shown, the adjustment structure 415 includes a connecting shaft 4151 and a support base 4152. Connecting shaft 4151 is coaxially fixed to the outside of the circular end plate 4142 and extends through the rear sidewall of the housing 11. Connecting shaft 4151 serves as a power input / output interface, and the outer end of connecting shaft 4151 can be connected to a drive motor or a manual rotation mechanism (test mode switch).

[0077] The support seat 4152 is fixed to the outer side of the back side of the housing 11 . The support seat 4152 is rotatably connected to the connecting shaft 4151 to provide axial positioning and radial support, and to withstand the overturning moment of the rotating ring 4141 .

[0078] like Figure 8 As shown, in this embodiment, the locking assembly 42 includes an annular rotating frame 421, a limiting cylinder 422, and a pneumatic latch 423. The annular rotating frame 421 is fixed to the end of the connecting shaft 4151 (the end away from the circular end plate 4142), allowing it to rotate coaxially with the connecting shaft 4151. Limiting holes 4211 (the number of which corresponds to the number of detection plates 413) are evenly distributed on the edge of the annular rotating frame 421 to meet the switching requirements of the detection plates 413. The limiting cylinder 422 is fixed to the side of the support base 4152 and has an integrated pneumatic latch 423. The diameter of the pneumatic latch 423 is clearance-matched with the limiting hole 4211. When the pneumatic latch 423 is inserted into the limiting hole 4211, the annular rotating frame 421 can be radially positioned.

[0079] In this specific embodiment, there are 6 limiting holes 4211, and the number of detection plates 413 is the same, and the detection plates 413 are set corresponding to the limiting holes 4211. Each detection plate corresponds to a road condition, thereby achieving accurate binding of position and road condition.

[0080] like Figure 9 As shown, in this embodiment, the annular side plates 112 on the left and right sides of the tire detection area 5 are respectively provided with a feed port 1121 and a discharge port 1122; the gravel circulation assembly 43 includes a guide shell 431, a guide plate 432 and a spiral feeding mechanism 433;

[0081] The guide housing 431 includes a storage chamber 4311 and a guide channel 4312. The input end of the guide channel 4312 is connected to the discharge port 1122 to collect the crushed stones after impact. The output end of the guide channel 4312 is connected to the storage chamber 4311. The storage chamber 4311 is lower than the discharge port 1122. This height difference creates a natural inclination, allowing the crushed stones to automatically slide into the storage chamber 4311 through the guide channel 4312.

[0082] The bottom side surface of the guide plate 432 maintains sliding contact with the second annular detection surface 412, one end of the guide plate 432 passes through the discharge port 1122 and is fixed to the upper side wall of the guide channel 4312, and the other end of the guide plate 432 extends to contact the vertical surface at the junction of the second annular detection surface 412 and the first annular detection surface 411. The side of the guide plate 432 close to the set plane is provided with a first inclined surface 4321 inclined downward, and the side of the guide plate 432 away from the set plane is provided with a second inclined surface 4322 inclined upward; the first inclined surface 4321 of the guide plate 432 can guide the gravel below it to the discharge port 1122, and the second inclined surface 4322 of the guide plate 432 can guide the gravel above it to the discharge port 1122 (splashing gravel), so as to avoid accumulation on the second annular detection surface 412 (reference Figure 3 );

[0083] The screw feed mechanism 433 includes a feed barrel 4331, a discharge barrel 4332, a screw conveyor shaft 4333, and a second servo motor 4334. The feed barrel 4331 is mounted at a 30° angle, with its lower end extending to the bottom of the storage chamber 4311. The upper end of the feed barrel 4331 connects to the feed inlet 1121 through the discharge barrel 4332, forming a closed loop. The screw conveyor shaft 4333 rotates within the feed barrel 4331. The screw conveyor shaft 4333 has a blade diameter of 150 mm and a pitch of 120 mm. The speed ranges from 10 to 200 rpm, and the conveying capacity ranges from 0.1 to 2.5 tons per hour. The screw conveyor shaft 4333 is coated with tungsten carbide for improved wear resistance. The second servo motor 4334 drives the screw conveyor shaft 4333. Specifically, the second servo motor 4334 has a power of 5.5 kW and supports start / stop, forward / reverse, and variable speed control.

[0084] During the specific operation, the crushed stones are guided by the first inclined surface 4321 of the guide plate 432, enter the guide channel 4312 through the discharge port 1122, and slide along the guide channel 4312 into the storage chamber 4311 for temporary storage. The second servo motor 4334 is activated to drive the screw conveyor shaft 4333 to rotate, so that the crushed stones at the bottom of the storage chamber 4311 are captured by the blades of the screw conveyor shaft 4333 and move upward along the feed barrel 4331. When the crushed stones reach the top of the feed barrel 4331, they are evenly scattered from the feed port 1121 to the inside of the second annular detection surface 412 through the discharge barrel 4332.

[0085] It is worth mentioning that, during the above detection process, the rotation speed of the spiral conveying shaft 4333 can be changed to simulate a continuous gradual change scenario from sparse "gravel" to dense "pebbles" impact.

[0086] In this embodiment, it also includes a comprehensive control system, which integrates a mode switching module and a load adjustment module;

[0087] The mode switching module is used to control the locking assembly 42 to switch between the fixed friction mode and the dynamic rolling mode. This can be achieved by cooperating with the rotating ring 4141-shaped rotating frame and the pneumatic latch 423. The principle of this is not elaborated here.

[0088] The load adjustment module is used to automatically adjust the vertical loading force of the hydraulic push rod 313 according to the tire specifications; this can be achieved with the help of a hydraulic system and a pressure sensor, and its principle will not be elaborated in detail here.

[0089] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A detection device for automobile tire production, characterized in that: include: A cylindrical cavity is formed by the housing and is arranged with its axis horizontally. A circular opening is provided at the center of the front face of the housing, communicating with the cylindrical cavity. The cylindrical cavity extends radially outward from the periphery of the circular opening to form an annular detection area. The lower half of the annular detection area is defined as the tire detection zone. a blocking mechanism comprising a blocking plate and a transverse drive assembly, wherein the transverse drive assembly is used to drive the blocking plate to move horizontally to close or open the circular opening; The tire loading mechanism includes a vertically movable assembly slidably connected to the blocking plate, a tire fixing assembly rotatably mounted on the vertically movable assembly, and a rotation drive assembly drivingly connected to the tire fixing assembly to drive the tire fixing assembly to rotate about its own axis; A road condition simulation detection mechanism, comprising a ring-shaped rotating body, a locking assembly, and a gravel circulation assembly; The annular rotating body is rotatably assembled in the annular detection area, and a first annular detection surface and a second annular detection surface of different radii are formed on the inner side thereof, wherein the first annular detection surface has detection plates with different roughness distributed along the circumference, and the second annular detection surface is arranged adjacent to the circular opening; the locking assembly is configured to limit or release the rotation of the annular rotating body; with the vertical plane passing through the central axis of the cylindrical cavity as the set plane, the gravel circulation assembly is configured to make the gravel continuously roll on the second annular detection surface from the left side to the right side of the set plane.

2. The automobile tire production detection device according to claim 1, characterized in that: The shell consists of a cylindrical outer shell and a detachable annular side plate. One end of the cylindrical outer shell is open, and the annular side plate is installed at the open end. The inner side of the annular side plate forms the circular opening; a supporting member is provided at the bottom of the cylindrical outer shell.

3. The automobile tire production detection device according to claim 1, characterized in that: The blocking mechanism also includes a positioning bracket arranged at the shell near the circular opening, and the blocking plate is horizontally slidably installed on the positioning bracket through a sliding pair, and the size of the blocking plate along the moving direction is greater than the axial length of the circular opening; the transverse drive assembly includes a pair of electric push rods, which are symmetrically arranged on both sides of the positioning bracket, and the telescopic ends of the electric push rods are connected to the blocking plate; the positioning bracket is provided with a photoelectric sensor for real-time monitoring of the closing position of the blocking plate.

4. The automobile tire production detection device according to claim 3, characterized in that: The blocking plate is provided with a strip-shaped slide extending downward from the center of the circle. The vertical moving component includes a sliding seat slidably assembled in the strip-shaped slide, a sealing plate vertically fixed on the top of the sliding seat, and a hydraulic push rod. The hydraulic push rod is fixed on the outside of the blocking plate, and the telescopic end of the hydraulic push rod is connected to the sliding seat.

5. The automobile tire production detection device according to claim 4, characterized in that: The tire fixing assembly includes a rotating shaft that horizontally passes through the sliding seat and rotates with it, and a limiting structure provided on one end of the rotating shaft near the shell; the limiting structure includes a fixed plate fixed to the rotating shaft and a movable plate threadedly connected to the rotating shaft, and an adjustment handle is provided on the movable plate; the rotation drive assembly is a first servo motor fixed to the sliding seat, and the output end of the first servo motor is connected to the rotating shaft through a coupling.

6. The automobile tire production detection device according to claim 1, characterized in that: The annular rotating body includes an internal structure and an adjustment structure connected to each other; The internal structure includes a rotating ring coaxially arranged in the annular detection area and a circular end plate connected to the rotating ring on the side away from the circular opening; an annular gap is provided between the rotating ring and the cylindrical cavity, and rollers are evenly distributed in the annular gap; the first annular detection surface and the second annular detection surface are provided on the inner side of the rotating ring; The adjustment structure includes a connecting shaft coaxially fixed to the side of the circular end plate away from the circular opening, and one end of the connecting shaft away from the circular end plate passes through the back side wall of the shell and is connected to a support seat rotatably matched therewith.

7. The automobile tire production detection device according to claim 6, characterized in that: The locking assembly includes an annular rotating frame, a limiting cylinder and a pneumatic latch; the annular rotating frame is fixed to the end of the connecting shaft away from the circular end plate, and limiting holes are evenly provided on the edge of the annular rotating frame; the limiting cylinder is fixed on the support seat, and the pneumatic latch is provided in the limiting cylinder, and the pneumatic latch can be inserted into the limiting hole to lock the annular rotating body; the number of the detection plates is the same as the number of the limiting holes, and the detection plates and the limiting holes are arranged correspondingly.

8. The automobile tire production detection device according to claim 1, characterized in that: The annular side plates on the left and right sides of the tire testing area are respectively provided with a feed port and a discharge port; The gravel circulation assembly includes a material guide shell, a material guide plate and a spiral feeding mechanism; The material guide shell is provided with a material storage cavity and a material guide channel, the input end of the material guide channel is connected to the material outlet, the output end of the material guide channel is connected to the material storage cavity, and the height of the material storage cavity is lower than the material outlet; The material guide plate maintains sliding contact with the second annular detection surface, one end of the material guide plate passes through the discharge port and is fixed to the upper side wall of the material guide channel, the other end of the material guide plate extends to contact the vertical surface where the second annular detection surface and the first annular detection surface meet, a first inclined surface inclined downward is provided on the side of the material guide plate close to the set plane, and a second inclined surface inclined upward is provided on the side of the material guide plate away from the set plane; The spiral feeding mechanism includes a feeding cylinder, a discharging cylinder, a spiral conveying shaft and a second servo motor; The feeding barrel is arranged at an angle, and the lower end of the feeding barrel extends to the bottom of the storage chamber, and the upper end of the feeding barrel is connected to the feed port through the discharge barrel to form a closed circulation path; the spiral conveying shaft is rotatably assembled in the feeding barrel, and the second servo motor is used to drive the spiral conveying shaft to rotate.

9. The automobile tire production testing device according to any one of claims 1 to 8, characterized in that: It also includes a comprehensive control system that integrates a mode switching module and a load regulation module; The mode switching module is used to control the locking assembly to switch between the fixed friction mode and the dynamic rolling mode; The load adjustment module is used to automatically adjust the vertical loading force of the hydraulic push rod according to the tire specifications.

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