Automatic assembly and pressing detection machine for tire hub of trackless scraper

Abstract

This invention relates to an automatic tire and wheel hub assembly and pressure testing machine for trackless loaders, belonging to the field of modular processing technology. It includes an assembly platform with a conveying and feeding assembly, a clamping and assembly assembly, an inflation and pressure testing assembly, and a tilting and unloading assembly. Below the tilting and unloading assembly is a leakage detection assembly, with sorting and conveying assemblies on both sides of the leakage detection assembly. The leakage detection assembly includes a rotatable leakage detection box, a square box with openings at the top and bottom. Four L-shaped sealing plates are telescopically installed at the openings of the leakage detection box. Four ultrasonic detectors are fixed on one side of the inner wall of the leakage detection box, and four pressure sensors are fixed on the other side. This invention solves the technical problems of traditional tire and wheel hub assembly, which relies on manual labor, resulting in low efficiency, easy damage to components, poor accuracy in sealing detection, and discontinuous production processes.

Description

Technical Field

[0001] This invention relates to the field of combined processing technology, specifically to an automatic assembly and pressure testing machine for tires and hubs of trackless loader. Background Technology

[0002] In the field of construction machinery, large equipment such as trackless loaders, due to their harsh working conditions, place extremely high demands on the load-bearing capacity, durability, and safety reliability of tires. The assembly quality of the tires and rims, as well as their sealing performance, are key factors in ensuring the normal operation and safety of the equipment.

[0003] For a long time, this process has mainly relied on manual labor. Operators first need to preliminarily align the heavy tire with the rim, and then use tools such as pry bars or simple machinery to press it in. This process is not only labor-intensive and inefficient, but also prone to damage to the rim lip or tire bead due to inaccurate alignment or uneven force, creating potential safety hazards.

[0004] After assembly, the tires need to be inflated and tested for air tightness. Traditional manual water bath testing is not only cumbersome and time-consuming, but also relies on the operator's observation experience to identify extremely small leaks, which carries the risk of missed detections and misjudgments, making it difficult to guarantee the accuracy and consistency of the test results.

[0005] Furthermore, the entire process, from assembly and inflation to testing and sorting, involves dispersed workstations and frequent material transfers, creating a series of "disruptions" on the production line and making it difficult to achieve smooth, rhythmic production. This high reliance on manual labor and low levels of automation and intelligence has become a bottleneck restricting the improvement of production efficiency and the stable control of product quality.

[0006] Therefore, the industry urgently needs an integrated equipment that combines automated assembly, precise pressure testing, and high-reliability sealing testing. This equipment can automate the entire process of tire and wheel hub sorting from production line entry to qualified / defective products, thereby fundamentally solving the above problems and improving product quality and production efficiency. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an automatic assembly and pressure testing machine for tires and rims of trackless loader, which solves the technical problems of traditional tire and rim assembly relying on manual labor, resulting in low efficiency, easy damage to parts, poor accuracy in sealing tests, and discontinuous production processes.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] The trackless loader tire and wheel hub automatic assembly and pressure testing machine includes an assembly platform. The assembly platform is equipped with a conveying and feeding component, a clamping and assembly component, an inflation and pressure testing component, and a tilting and unloading component. A leakage detection component is located below the tilting and unloading component, and sorting and conveying components are located on both sides of the leakage detection component.

[0010] As an optimized solution, the clamping assembly assembly includes an assembly support frame, a transverse movement limiting seat is fixed on the longitudinal inner wall of the assembly support frame, a transverse movement driving module is provided in the transverse movement limiting seat, and a transverse movement top seat is slidably provided between the two transverse movement limiting seats.

[0011] As an optimized solution, a stepper motor is fixed in the middle of the upper surface of the transverse top seat, and a lifting drive module that is fixedly connected to the output shaft of the stepper motor is rotatably mounted on the inner top surface of the transverse top seat.

[0012] As an optimized solution, a lifting horizontal plate is fixed to the lower telescopic end of the lifting drive module, and an electrical control integrated box is fixed at the center of the lower surface of the lifting horizontal plate. A clamping telescopic cylinder is fixed on each longitudinal outer wall of the electrical control integrated box, and a vertically extending arc-shaped clamping plate is fixed to the telescopic end of the clamping telescopic cylinder.

[0013] As an optimized solution, each of the arc-shaped clamps has a horizontal limiting baffle fixed on its inner arc surface near the lower end.

[0014] As an optimized solution, the leakage detection assembly includes a rotatable leakage detection box, which is a square box with openings at the top and bottom. Four L-shaped sealing plates are telescopically installed at the top and bottom openings of the leakage detection box. Four ultrasonic detectors are fixed on one side of the transverse inner wall of the leakage detection box, and four pressure sensors are fixed on the other side of the transverse inner wall.

[0015] As an optimized solution, the conveying and feeding assembly includes a tire conveying mechanism and a wheel hub conveying mechanism, with the tire conveying mechanism located directly above the wheel hub conveying mechanism.

[0016] As an optimized solution, the hub conveying mechanism includes a conveyor frame, which is divided into two longitudinally symmetrical groups. The lower ends of the two groups of conveyor frames are respectively welded to the upper surface of the assembly platform. The conveyor frame is a five-segment structure that slopes upward from left to right.

[0017] As an optimized solution, a transmission box is fixed on the longitudinal outer wall of each of the conveyor frames. The transmission box is equipped with a sprocket drive structure. A hub conveyor motor is fixed on the outer wall of the end of the transmission box. The output shaft of the hub conveyor motor passes through the outer wall of the transmission box and is connected to the sprocket drive structure inside it for transmission.

[0018] As an optimized solution, a number of hub conveyor rollers are rotatably arranged between the two sets of conveyor frames, and the hub conveyor rollers are arranged at equal intervals along the extension direction of the conveyor frame.

[0019] As an optimized solution, a connecting shaft is fixed on the side end face of each of the hub conveyor rollers, and the end of the connecting shaft passes through the conveyor frame and is connected to the sprocket drive structure in the transmission box for transmission.

[0020] As an optimized solution, the tire conveying mechanism includes two longitudinally symmetrically arranged conveying mounting frames. The conveying mounting frames are U-shaped frames with their openings facing downwards. The conveying mounting frames are located on the outside of the conveyor frame and their lower ends are welded to the upper surface of the assembly platform.

[0021] As an optimized solution, two transversely symmetrical conveying support rollers are rotatably mounted between the two conveying mounting frames. A tire conveying motor is fixed on the outer side wall of each conveying mounting frame. The output shaft end of the tire conveying motor passes through the side wall of the conveying mounting frame and is fixed to the center of the side end face of the corresponding conveying support roller.

[0022] As an optimized solution, a tire conveyor belt is fitted between the two conveyor support rollers.

[0023] As an optimized solution, the upper half of the assembly support frame extends laterally, the lower half of the assembly support frame extends vertically and spans across the two conveyor mounting frames, and the lower end of the assembly support frame is welded to the upper surface of the assembly platform.

[0024] As an optimized solution, the upper part of the assembly support frame is provided with a connecting longitudinal beam, which is fixed to the assembly support frame by bolts. Two supporting vertical beams are clamped on the other side of the assembly support frame, and the lower ends of the supporting vertical beams are welded to the upper surface of the conveyor frame.

[0025] As an optimized solution, an assembly positioning camera is fixed to the center of the lower surface of the electronic control integrated box.

[0026] As an optimized solution, a loading recognition camera is fixed on each longitudinal inner wall of the assembly support frame, and the loading recognition camera is slightly higher than the upper surface of the tire conveyor belt.

[0027] As an optimized solution, a filler side plate is fixed in the gap between the assembly platform and the conveyor frame.

[0028] As an optimized solution, a side mounting arm is fixed on the outer side wall of each of the filling side plates. The side mounting arm is located on the outer side of the upwardly inclined part of the conveyor frame. A horizontal positioning telescopic cylinder is fixed on the upper inner wall of each side mounting arm. A hub positioning push plate is fixed at the telescopic end of the positioning telescopic cylinder.

[0029] As an optimized solution, a lifting ejection module is also provided between the two filling side plates. The lifting ejection module is fixed on the upper surface of the assembly platform. A lifting support plate is fixed at the upper telescopic end of the lifting ejection module. Several horizontally spaced ejection positioning plates are welded to the upper surface of the lifting support plate. The ejection positioning plates are located between two adjacent hub conveyor rollers.

[0030] As an optimized solution, the inflation and pressurization assembly includes two pressurization and inflation stations, each of which has a built-in air booster pump, and the two pressurization and inflation stations are respectively fixed on the longitudinal outer wall of the two filling side plates.

[0031] As an optimized solution, each of the pressurization and inflation stations is externally connected to a gas delivery pipe, and a high-pressure inflation gun is connected to the end of the gas delivery pipe.

[0032] As an optimized solution, the tipping unloading assembly includes a horizontally arranged fixed pallet, which is welded to the inner top surface of the ends of the two sets of conveyor frames.

[0033] As an optimized solution, the upper surface of the fixed tray is provided with two longitudinally symmetrical sliding limit grooves, which are located on the outside of the conveyor frame.

[0034] As an optimized solution, the flipping unloading assembly also includes an unloading translation frame, which is a U-shaped frame with the opening facing downwards. A strip baffle is fixed on the longitudinal inner wall of the unloading translation frame near the lower end. The strip baffle is set close to the upper surface of the fixed support plate. The two lower ends of the unloading translation frame pass through the two sliding limiting grooves and extend to their lower sides.

[0035] As an optimized solution, the lower surface of the fixed tray is fixed with two sliding drive modules corresponding to the unloading translation frame. Each sliding drive module is externally connected to a drive threaded rod, which passes through and is threadedly connected to the unloading translation frame.

[0036] As an optimized solution, the unloading translation frame is provided with a U-shaped lifting constraint port. Each longitudinal outer wall of the unloading translation frame is fixed with an electric drive module. Each electric drive module is externally connected to two sets of parallel electric drive slide rails. The two electric drive slide rails are fixed on the longitudinal outer wall of the unloading translation frame and are respectively located on both sides of the lifting constraint port.

[0037] As an optimized solution, electric slide blocks are slidably mounted on the two electric drive slide rails. A flip drive motor is fixed on the outer wall of the electric slide block. The output shaft of the flip drive motor passes through the electric slide block and is fixed with a square transfer seat. A telescopic cylinder is fixed on the longitudinal side wall of the square transfer seat. An arc-shaped flip clamp is fixed at the telescopic end of each telescopic cylinder.

[0038] As an optimized solution, a material unloading recognition camera is fixed at the upper middle part of the unloading translation frame.

[0039] As an optimized solution, a support base is provided below the leakage detection box. The support base is a longitudinally extending square base. Two longitudinally symmetrical mounting side plates are fixed on the support base. A drive shaft is fixed on each longitudinal outer wall of the leakage detection box. The end of one of the drive shafts is rotatably supported on one of the mounting side plates, and the end of the other drive shaft passes through the other mounting side plate and is fixed with an upper drive wheel.

[0040] As an optimized solution, a swing drive motor is fixed on the upper surface of the support base. The output shaft of the swing drive motor passes through the mounting side plate and is fixed with a lower transmission wheel. A transmission chain is sleeved between the lower transmission wheel and the upper transmission wheel.

[0041] As an optimized solution, the leakage detection box has four symmetrical strip-shaped connecting ports on its transverse sidewall near the upper and lower openings. The L-shaped sealing plate is telescopically installed in the strip-shaped connecting ports, and the L-shaped sealing plate and the sidewall of the leakage detection box are connected by an electric telescopic cylinder.

[0042] As an optimized solution, a power supply box is fixed on each of the transverse outer walls of the leak detection box, and the ultrasonic detector and the pressure sensor are electrically connected to the power supply box respectively.

[0043] As an optimized solution, the sorting and conveying assembly includes a first conveyor frame and a second conveyor frame. The first conveyor frame and the second conveyor frame are U-shaped frames with longitudinal openings. The openings of the first conveyor frame and the second conveyor frame face opposite directions. The first conveyor frame and the second conveyor frame are respectively fixed to the two transverse outer walls of the support base.

[0044] As an optimized solution, a number of synchronously rolling qualified product conveying rollers are rotatably installed in the first conveyor frame, and a number of synchronously rolling defective product conveying rollers are rotatably installed in the second conveyor frame.

[0045] As an optimized solution, a first conveying motor and a second conveying motor are respectively fixed on the two longitudinal side walls of the support base. The output shaft end of the first conveying motor is fixedly connected to the first qualified product conveying roller, and the output shaft end of the second conveying motor is fixedly connected to the first defective product conveying roller.

[0046] As an optimized solution, vertical guide plates are fixed to the upper surfaces of the first conveyor frame and the second conveyor frame respectively. The two vertical guide plates are respectively arranged on the horizontal sides of the leakage detection box, so as to directly guide the tested tires to the qualified product conveyor roller or the defective product conveyor roller.

[0047] This device, through integrated design and automated control, achieves fully automated operation of the entire process of tire and wheel hub assembly, inflation testing, and sorting, and has the following significant technical advantages:

[0048] 1. Improve assembly accuracy and efficiency

[0049] This device employs a dual-camera vision positioning system (a loading recognition camera and an assembly positioning camera), along with a wheel hub positioning push plate and a lifting ejection module, to achieve precise positioning and fixing of the wheel hub. The clamping and assembly components are rotated and pressed by a stepper motor, combined with precise lateral and lifting drives, ensuring the alignment accuracy and assembly consistency of the tire and wheel hub, effectively avoiding misalignment or damage problems that occur during manual assembly.

[0050] 2. Automated assembly line operations optimize production cycle time.

[0051] This device enables synchronous and parallel feeding of tires and wheel hubs through a conveyor feeding assembly. The wheel hub conveyor mechanism adopts a ramp design and utilizes gravity-assisted transmission to reduce power consumption. The clamping assembly, inflation and pressurization and flipping unloading processes are closely linked to form a continuous assembly line operation, which significantly shortens the assembly time of a single piece and is suitable for mass production needs.

[0052] 3. Dual Detection Mechanism Ensures Quality Reliability: The leak detection component in this device integrates pressure attenuation method and ultrasonic detection technology. Through simultaneous detection by a pressure sensor and an ultrasonic detector, it achieves dual verification of tire sealing performance. This method can sensitively identify minute leaks, reduce false alarm rates, and ensure that the airtightness of products leaving the factory meets standards.

[0053] 4. Flexible sorting and automated unloading reduce manual intervention.

[0054] Based on the test results, the sorting and conveying assembly automatically distinguishes between qualified and defective products through guide plates and bidirectional conveyor frames, achieving seamless diversion and transfer. The tilting and unloading assembly adopts electric clamping and a 90° tilting mechanism to meet the vertical feeding requirements of the leak detection box, avoiding the efficiency bottlenecks and operational risks caused by manual handling.

[0055] 5. Improved human-machine collaboration and operational safety

[0056] The inflation and pressurization process is designed for manual hand operation, balancing automation with human flexibility; key motion modules are equipped with limit structures and electronic protection to prevent interference and collisions. The overall structure, through platform integration and modular layout, ensures equipment stability and ease of maintenance. Attached Figure Description

[0057] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0058] Figure 1 This is a schematic diagram of the overall external structure of each component in the present invention in the main viewing direction;

[0059] Figure 2 This is a schematic diagram of the overall external structure of each component in the present invention from a top-down perspective;

[0060] Figure 3 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction;

[0061] Figure 4 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction;

[0062] Figure 5 This is an isometric schematic diagram of the three-dimensional structure of the present invention;

[0063] Figure 6 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA in the middle;

[0064] Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line;

[0065] Figure 8 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the CC line;

[0066] Figure 9 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the DD line in the middle;

[0067] Figure 10 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the EE line;

[0068] Figure 11 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the FF line.

[0069] In the diagram: 1-Assembly platform, 2-Conveyor frame, 3-Transmission box, 4-Hub conveyor motor, 5-Hub conveyor roller, 6-Conveyor mounting frame, 7-Conveyor support roller, 8-Tire conveyor motor, 9-Tire conveyor belt, 10-Assembly support frame, 11-Connecting longitudinal beam, 12-Supporting vertical beam, 13-Transverse movement limit seat, 14-Transverse movement drive module, 15-Transverse movement top seat, 16-Stepper motor, 17-Lifting drive module, 18- 19- Lifting horizontal plate, 20- Electrical control integrated box, 21- Clamping telescopic cylinder, 22- Arc-shaped clamping plate, 23- Limiting baffle, 24- Assembly positioning camera, 25- Loading identification camera, 26- Filling side plate, 27- Side mounting arm, 28- Positioning telescopic cylinder, 29- Wheel hub positioning push plate, 30- Pressure charging station, 31- Air delivery pipe, 32- High-pressure charging gun, 33- Fixed support plate, 34- Sliding limiting groove, 35- Unloading translation frame 35-Strip baffle, 36-Sliding drive module, 37-Drive threaded rod, 38-Lifting constraint port, 39-Electric drive module, 40-Electric drive slide rail, 41-Electric slide block, 42-Tilting drive motor, 43-Square transfer seat, 44-Telescopic cylinder, 45-Tilting clamp, 46-Unloading identification camera, 47-Support base, 48-Mounting side plate, 49-Leakage detection box, 50-Upper transmission wheel, 51-Swing drive motor, 52-Lower transmission wheel, 53-Transmission chain, 54-L-shaped sealing plate, 55-Power supply box, 56-Ultrasonic detector, 57-Pressure sensor, 58-First conveyor frame, 59-Second conveyor frame, 60-Qualified product conveying roller, 61-First conveyor motor, 62-Second conveyor motor, 63-Defective product conveying roller, 64-Vertical guide plate, 65-Lifting ejection module, 66-Lifting pallet, 67-Ejection positioning plate. Detailed Implementation

[0070] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0071] like Figures 1 to 11 As shown, the automatic assembly and pressure testing machine for tires and hubs of trackless loader includes an assembly platform 1, which is a horizontally extending square platform. The assembly platform 1 is equipped with a conveying and feeding component, a clamping and assembly component, an inflation and pressure testing component, and a tilting and unloading component. A leakage detection component is located below the tilting and unloading component, and sorting and conveying components are located on both sides of the leakage detection component.

[0072] The conveying and feeding assembly includes a tire conveying mechanism and a hub conveying mechanism, with the tire conveying mechanism located directly above the hub conveying mechanism.

[0073] The hub conveying mechanism includes a conveyor frame 2, which is divided into two longitudinally symmetrical groups. The lower ends of the two groups of conveyor frames 2 are respectively welded to the upper surface of the assembly platform 1. The conveyor frame 2 is a five-segment structure that slopes upward from left to right.

[0074] Each conveyor frame 2 has a transmission box 3 fixed on its longitudinal outer wall. The transmission box 3 is equipped with a sprocket drive structure. A hub conveyor motor 4 is fixed on the outer wall of the end of the transmission box 3. The output shaft of the hub conveyor motor 4 passes through the outer wall of the transmission box 3 and is connected to the sprocket drive structure inside it for transmission.

[0075] Several hub conveyor rollers 5 are rotatably arranged between the two sets of conveyor frames 2, and the hub conveyor rollers 5 are arranged at equal intervals along the extension direction of the conveyor frame 2.

[0076] Each hub conveyor roller 5 has a connecting shaft fixed on its side end face. The end of the connecting shaft passes through the conveyor frame 2 and is connected to the sprocket drive structure in the transmission box 3 for transmission.

[0077] The tire conveying mechanism includes two longitudinally symmetrically arranged conveying mounting frames 6. The conveying mounting frames 6 are U-shaped frames with their openings facing downwards. The conveying mounting frames 6 are located on the outside of the conveyor frame 2 and their lower ends are welded to the upper surface of the assembly platform 1.

[0078] Two transversely symmetrical conveying support rollers 7 are rotatably mounted between the two conveying mounting frames 6. A tire conveying motor 8 is fixed on the outer side wall of each conveying mounting frame 6. The output shaft end of the tire conveying motor 8 passes through the side wall of the conveying mounting frame 6 and is fixed to the center of the side end face of the corresponding conveying support roller 7.

[0079] A tire conveyor belt 9 is fitted between the two conveyor support rollers 7.

[0080] The clamping assembly assembly includes an assembly support frame 10, the upper half of which extends laterally and the lower half of which extends vertically and spans two conveyor mounting frames 6. The lower end of the assembly support frame 10 is welded to the upper surface of the assembly platform 1.

[0081] The upper part of the assembly support frame 10 is provided with a connecting longitudinal beam 11, which is fixed to the assembly support frame 10 by bolts. Two supporting vertical beams 12 are clamped on the other side of the assembly support frame 10, and the lower end of the supporting vertical beams 12 is welded to the upper surface of the conveyor frame 2.

[0082] A transverse movement limiting seat 13 is fixed on the longitudinal inner wall of the horizontal part of the assembly support frame 10. A transverse movement driving module 14 is provided inside the transverse movement limiting seat 13. A transverse movement top seat 15 is slidably provided between the two transverse movement limiting seats 13.

[0083] A stepper motor 16 is fixed in the middle of the upper surface of the transverse top seat 15, and a lifting drive module 17, which is fixedly connected to the output shaft of the stepper motor 16, is rotatably mounted on the inner top surface of the transverse top seat 15.

[0084] A lifting horizontal plate 18 is fixed to the lower telescopic end of the lifting drive module 17. An electrical control integrated box 19 is fixed at the center of the lower surface of the lifting horizontal plate 18. A clamping telescopic cylinder 20 is fixed on each longitudinal outer wall of the electrical control integrated box 19. A vertically extending arc-shaped clamping plate 21 is fixed to the telescopic end of each clamping telescopic cylinder 20.

[0085] Each arc-shaped clamp 21 has a horizontal limiting baffle 22 fixed on its inner arc surface near the lower end.

[0086] An assembly positioning camera 23 is fixed in the middle of the lower surface of the electrical control integrated box 19.

[0087] Each longitudinal inner wall of the assembly support frame 10 is fixed with a loading identification camera 24, which is slightly higher than the upper surface of the tire conveyor belt 9.

[0088] A filler side plate 25 is fixed in the gap between the assembly platform 1 and the conveyor frame 2.

[0089] Each filling side plate 25 has a side mounting arm 26 fixed on its outer side wall. The side mounting arm 26 is located on the outer side of the upwardly inclined part of the conveyor frame 2. A horizontal positioning telescopic cylinder 27 is fixed on the upper inner wall of each side mounting arm 26. A hub positioning push plate 28 is fixed at the telescopic end of the positioning telescopic cylinder 27.

[0090] The inflation and pressurization assembly includes two pressurization and inflation stations 29, each of which has a built-in air booster pump. The two pressurization and inflation stations 29 are respectively fixed on the longitudinal outer wall of two filling side plates 25.

[0091] Each pressurization and inflation station 29 is connected to an external air supply pipe 30. The end of the air supply pipe 30 is connected to a high-pressure air gun 31. Workers can hold the high-pressure air gun 31 to inflate and pressurize the assembled tires. This design takes into account both automated processes and manual flexibility.

[0092] The tipping unloading assembly includes a horizontally arranged fixed pallet 32, which is welded to the inner top surface of the ends of the two sets of conveyor frames 2.

[0093] The upper surface of the fixed support plate 32 is provided with two longitudinally symmetrical sliding limit grooves 33, which are located on the outside of the conveyor frame 2.

[0094] The overturning unloading assembly also includes an unloading translation frame 34, which is a U-shaped frame with the opening facing downwards. A strip baffle 35 is fixed on the longitudinal inner wall of the unloading translation frame 34 near the lower end. The strip baffle 35 is set close to the upper surface of the fixed support plate 32. The two lower ends of the unloading translation frame 34 pass through two sliding limit grooves 33 and extend to their lower sides.

[0095] The lower surface of the fixed pallet 32 ​​is fixed with two sliding drive modules 36 corresponding to the unloading translation frame 34. Each sliding drive module 36 is externally connected to a drive threaded rod 37, which passes through and is threadedly connected to the unloading translation frame 34.

[0096] The unloading translation frame 34 has a U-shaped lifting constraint port 38. Each longitudinal outer wall of the unloading translation frame 34 is fixed with an electric drive module 39. Each electric drive module 39 is externally connected to two sets of parallel electric drive slide rails 40. The two electric drive slide rails 40 are fixed on the longitudinal outer wall of the unloading translation frame 34 and are located on both sides of the lifting constraint port 38.

[0097] Two electrically driven slide rails 40 are equipped with electric slide blocks 41. A flip drive motor 42 is fixed on the outer wall of the electric slide block 41. The output shaft of the flip drive motor 42 passes through the electric slide block 41 and is fixed with a square central pivot 43. A telescopic cylinder 44 is fixed on the longitudinal side wall of the square central pivot 43. An arc-shaped flip clamp 45 is fixed at the telescopic end of each telescopic cylinder 44.

[0098] A material unloading identification camera 46 is fixed at the upper middle part of the unloading translation frame 34.

[0099] The leak detection assembly includes a support base 47, which is a longitudinally extending square base located on the lower side of the fixed support plate 32.

[0100] Two longitudinally symmetrical mounting side plates 48 are fixed on the upper surface of the support base 47. A leakage detection box 49 is rotatably provided between the two mounting side plates 48. The leakage detection box 49 is a square box with openings at the top and bottom. A drive shaft is fixed on each longitudinal outer wall of the leakage detection box 49. The end of one drive shaft is rotatably supported on one mounting side plate 48, and the end of the other drive shaft passes through the other mounting side plate 48 and is fixed with an upper drive wheel 50.

[0101] A swing drive motor 51 is fixed on the upper surface of the support base 47. The output shaft of the swing drive motor 51 passes through the mounting side plate 48 and is fixed with a lower transmission wheel 52. A transmission chain 53 is sleeved between the lower transmission wheel 52 and the upper transmission wheel 50.

[0102] The leakage detection box 49 has four symmetrical strip-shaped connecting ports on its transverse sidewalls near the upper and lower openings. Each strip-shaped connecting port is equipped with an L-shaped sealing plate 54 that can extend and retract. Each L-shaped sealing plate 54 is connected to the sidewall of the leakage detection box 49 by an electric telescopic cylinder. By controlling the electric telescopic cylinder to shorten, the two opposing L-shaped sealing plates 54 can be driven to move in opposite directions, thereby completely sealing the leakage detection box 49. By controlling the L-shaped sealing plates 54 on the upper and lower sides to open and close alternately, the leakage detection box 49 can periodically switch between three states: open filling, closed detection, and open unloading.

[0103] A power supply box 55 is fixed on each of the transverse outer walls of the leak detection box 49. Four symmetrical ultrasonic detectors 56 are fixed on one transverse inner wall of the leak detection box 49, and four symmetrical pressure sensors 57 are fixed on the other transverse inner wall. The ultrasonic detectors 56 and pressure sensors 57 are electrically connected to the power supply box 55 respectively.

[0104] During the leak detection process, the tire sealing performance is determined by a combination of pressure attenuation method and ultrasonic testing technology. If the pressure attenuation exceeds the set threshold or an abnormal ultrasonic signal is detected during the pressure holding period, the tire is immediately deemed unqualified; otherwise, it is deemed qualified.

[0105] The sorting and conveying assembly includes a first conveyor frame 58 and a second conveyor frame 59. The first conveyor frame 58 and the second conveyor frame 59 are U-shaped frames with longitudinal openings. The openings of the first conveyor frame 58 and the second conveyor frame 59 face opposite directions. The first conveyor frame 58 and the second conveyor frame 59 are respectively fixed on the two transverse outer walls of the support base 47.

[0106] Several synchronously rolling qualified product conveying rollers 60 are rotatably installed inside the first conveying frame 58. The first conveying motor 61 and the second conveying motor 62 are respectively fixed on the two longitudinal side walls of the support base 47. The output shaft end of the first conveying motor 61 is fixedly connected to the first qualified product conveying roller 60.

[0107] Several synchronously rolling defective product conveying rollers 63 are rotatably installed inside the second conveyor frame 59, and the end of the output shaft of the second conveyor motor 62 is fixedly connected to the first defective product conveying roller 63.

[0108] Vertical guide plates 64 are fixed to the upper surfaces of the first conveyor frame 58 and the second conveyor frame 59 respectively. The two vertical guide plates 64 are respectively located on the horizontal sides of the leakage detection box 49, so as to directly guide the tires that have been tested to the qualified product conveyor roller 60 or the defective product conveyor roller 63.

[0109] A lifting ejection module 65 is also provided between the two filling side plates 25. The lifting ejection module 65 is fixed on the upper surface of the assembly platform 1. A lifting support plate 66 is fixed at the upper telescopic end of the lifting ejection module 65. Several horizontally spaced ejection positioning plates 67 are welded to the upper surface of the lifting support plate 66. The ejection positioning plates 67 are located between two adjacent hub conveyor rollers 5.

[0110] When using this invention:

[0111] First, the tires and rims are fed separately: the tires and rims are fed into the equipment through the conveying and feeding components. The rims are conveyed by the rim conveying mechanism. The rim conveying motor 4 drives the sprocket transmission structure, which drives the rim conveying roller 5 to move horizontally, so that the rims move from left to right along the slope conveyor frame 2.

[0112] The tire is conveyed by the tire conveying mechanism. The tire conveying motor 8 drives the conveying support roller 7, which in turn drives the tire conveying belt 9 to roll, conveying the tire laterally to the area below the clamping assembly.

[0113] During this period, the loading recognition camera 24 detects the position of the wheel hubs in real time to ensure that they arrive at the assembly station accurately. During the conveying process, the wheel hubs are centered and stably conveyed to the predetermined position by the positioning telescopic cylinder 27 and the wheel hub positioning push plate 28.

[0114] When the hub reaches the assembly position, the lifting ejection module 65 drives the lifting pallet 66 to rise, and uses the ejection positioning plate 67 to lift the hub from between the hub conveying rollers 5 to position it.

[0115] At the same time, the clamping assembly assembly is activated, and the lifting drive module 17 is controlled to descend, so that the arc-shaped clamping plate 21 approaches the tire. The clamping telescopic cylinder 20 pushes the arc-shaped clamping plate 21 to clamp the tire, and the limit baffle 22 ensures that the tire will not be displaced excessively.

[0116] Start the lateral drive module 14 to control the lateral top seat 15 to move along the lateral limit seat 13, and transfer the clamped tire to the assembly position facing the wheel hub.

[0117] During this process, the assembly positioning camera 23 can be used to assist in positioning and ensure that the tire and the wheel hub are aligned.

[0118] Next, positioning and assembly are performed: the lifting drive module 17 continues to descend while the stepper motor 16 is started to rotate and press the tire onto the wheel hub, thus completing the assembly.

[0119] After assembly, the lifting and ejection module 65 is reset, and the wheel hub conveying roller 5 continues to convey the assembled tire and wheel hub assembly to the right.

[0120] Then, manual inflation and pressure testing are performed: the assembled tire and wheel hub assembly is transported to the inflation station, the two pressure and inflation stations 29 of the inflation and pressure testing component are started, the air booster pump generates high-pressure air, the worker holds the high-pressure inflation gun 31 and connects the air delivery pipe 30 to the tire valve to inflate and pressurize, the inflation pressure is controlled by the pressure and inflation station 29 to ensure that the preset value is reached.

[0121] After inflation, the tire and wheel assembly continues to move to the right and enters the tipping and unloading station.

[0122] Then, the tire is flipped and unloaded: After the unloading identification camera 46 in the flipping and unloading assembly detects the tire position, it controls the electric slide 41 to descend along the electric drive slide rail 40. By controlling the extension cylinder 44 to extend, the tire is clamped by the flipping clamp 45. Then, the electric slide 41 rises and lifts the tire as a whole. The flipping drive motor 42 is started to drive the tire to flip 90°, so that it changes from a horizontal state to a vertical state, so that it can enter the leak detection assembly.

[0123] The unloading translation frame 34 is controlled to move laterally by the sliding drive module 36 and the drive threaded rod 37, so that the tire is facing the leak detection box 49. The telescopic cylinder 44 is controlled to retract, and the tire is released into the leak detection box 49.

[0124] Next, a leak detection is performed: The leak detection box 49 is initially in an open filling state. After the tire falls in, the electric telescopic cylinder drives the L-shaped sealing plate 54 to move in opposite directions, sealing the upper and lower openings of the leak detection box 49 and forming a sealed environment.

[0125] During the inspection, pressure sensor 57 detects changes in the internal pressure of the tire, and ultrasonic detector 56 scans for sound signals generated by leaks. The system uses a dual judgment method of pressure attenuation and ultrasonic technology: if the pressure attenuation exceeds the set threshold or the ultrasonic signal is abnormal during the pressure holding period, it is immediately judged as a defective product; if there is no abnormality, it is judged as a qualified product.

[0126] After the test is completed, the electric telescopic cylinder controls the L-shaped sealing plate 54 to open and close alternately: when the upper L-shaped sealing plate 54 is open, the leakage detection box 49 is in the open unloading state, and the tires are guided to the sorting and conveying assembly according to the test results; when the lower L-shaped sealing plate 54 is open, it can be used to discharge the tires that have been tested.

[0127] Finally, qualified and defective tires are sorted: based on the leakage detection results, the sorting and conveying assembly is started. Qualified tires are output through the qualified tire conveying roller 60 of the first conveying frame 58, and defective tires are output through the defective tire conveying roller 63 of the second conveying frame 59. The vertical guide plate 64 guides the tires to slide onto the corresponding conveying rollers. The first conveying motor 61 and the second conveying motor 62 drive the qualified tire conveying roller 60 and the defective tire conveying roller 63 to roll, respectively, to complete the sorting.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An automatic assembly and pressure testing machine for tires and hubs of trackless loaders, characterized in that: The assembly platform includes a conveying and feeding assembly, a clamping and assembly assembly, an inflation and pressurization assembly, and a tilting and unloading assembly. A leakage detection assembly is located below the tilting and unloading assembly, and sorting and conveying assemblies are located on both sides of the leakage detection assembly. The clamping assembly assembly includes an assembly support frame, a transverse movement limiting seat is fixed on the longitudinal inner wall of the assembly support frame, a transverse movement driving module is provided in the transverse movement limiting seat, and a transverse movement top seat is slidably provided between the two transverse movement limiting seats. A stepper motor is fixed in the middle of the upper surface of the transverse top seat, and a lifting drive module that is fixedly connected to the output shaft of the stepper motor is rotatably provided on the inner top surface of the transverse top seat. The lower telescopic end of the lifting drive module is fixed with a lifting horizontal plate, and an electrical control integrated box is fixed at the center of the lower surface of the lifting horizontal plate. Each longitudinal outer wall of the electrical control integrated box is fixed with a clamping telescopic cylinder, and the telescopic end of the clamping telescopic cylinder is fixed with a vertically extending arc-shaped clamping plate. Each of the aforementioned arc-shaped clamps has a horizontal limiting baffle fixed on its inner arc surface near the lower end; The leakage detection assembly includes a rotatable leakage detection box, which is a square box with openings at the top and bottom. Four L-shaped sealing plates are telescopically installed at the top and bottom openings of the leakage detection box. Four ultrasonic detectors are fixed on one side of the transverse inner wall of the leakage detection box, and four pressure sensors are fixed on the other side of the transverse inner wall. The hub conveying mechanism includes a conveyor frame, and the tilting unloading assembly includes a horizontally arranged fixed support plate, which is welded to the inner top surface of the ends of the two sets of conveyor frames; The upper surface of the fixed support plate is provided with two longitudinally symmetrical sliding limiting grooves, which are located on the outside of the conveyor frame. The flipping unloading assembly also includes an unloading translation frame, which is a U-shaped frame with the opening facing downwards. A strip baffle is fixed on the longitudinal inner wall of the unloading translation frame near the lower end. The strip baffle is set close to the upper surface of the fixed support plate. The two lower ends of the unloading translation frame pass through the two sliding limiting grooves and extend to their lower sides. The lower surface of the fixed tray is fixed with two sliding drive modules corresponding to the unloading translation frame. Each sliding drive module is externally connected to a drive threaded rod, which passes through and is threadedly connected to the unloading translation frame. The unloading translation frame is provided with a U-shaped lifting constraint port. Each longitudinal outer wall of the unloading translation frame is fixed with an electric drive module. Each electric drive module is externally connected to two sets of parallel electric drive slide rails. The two electric drive slide rails are fixed on the longitudinal outer wall of the unloading translation frame and are respectively located on both sides of the lifting constraint port. Electric slide blocks are slidably mounted on the two electric drive slide rails. A flip drive motor is fixed on the outer side wall of the electric slide block. The output shaft of the flip drive motor passes through the electric slide block and is fixed with a square transfer seat. A telescopic cylinder is fixed on the longitudinal side wall of the square transfer seat. An arc-shaped flip clamp is fixed at the telescopic end of each telescopic cylinder. A material unloading identification camera is fixed at the upper middle part of the unloading translation frame; The leakage detection box is provided with a support base at the bottom. The support base is a square seat that extends longitudinally. Two longitudinally symmetrical mounting side plates are fixed on the support base. A drive shaft is fixed on each longitudinal outer wall of the leakage detection box. The end of one of the drive shafts is rotatably supported on one of the mounting side plates, and the end of the other drive shaft passes through the other mounting side plate and is fixed with an upper drive wheel. A swing drive motor is fixed on the upper surface of the support base. The output shaft of the swing drive motor passes through the mounting side plate and is fixed with a lower transmission wheel. A transmission chain is sleeved between the lower transmission wheel and the upper transmission wheel. The leakage detection box has four symmetrical strip-shaped connecting ports on its transverse sidewall near the upper and lower openings. The L-shaped sealing plate is telescopically installed in the strip-shaped connecting ports. The L-shaped sealing plate and the sidewall of the leakage detection box are connected by an electric telescopic cylinder. A power supply box is fixed on each of the transverse outer walls of the leak detection box, and the ultrasonic detector and the pressure sensor are electrically connected to the power supply box respectively.

2. The automatic assembly and pressure testing machine for tires and hubs of trackless loaders according to claim 1, characterized in that: The conveying and feeding assembly includes a tire conveying mechanism and a wheel hub conveying mechanism, with the tire conveying mechanism located directly above the wheel hub conveying mechanism; The conveyor frame is divided into two longitudinally symmetrical groups. The lower ends of the two groups of conveyor frames are respectively welded to the upper surface of the assembly platform. The conveyor frame is a five-segment structure that slopes upward from left to right. Each of the conveyor frames is fixed with a transmission box on its longitudinal outer wall. The transmission box is equipped with a sprocket drive structure. A hub conveyor motor is fixed on the outer wall of the end of the transmission box. The output shaft of the hub conveyor motor passes through the outer wall of the transmission box and is connected to the sprocket drive structure inside it for transmission. A plurality of hub conveyor rollers are rotatably provided between the two sets of conveyor frames, and the plurality of hub conveyor rollers are arranged at equal intervals along the extension direction of the conveyor frames; Each of the hub conveyor rollers has a connecting shaft fixed to its side end face. The end of the connecting shaft passes through the conveyor frame and is connected to the sprocket drive structure in the transmission box for transmission.

3. The automatic assembly and pressure testing machine for tires and hubs of trackless loaders according to claim 2, characterized in that: The tire conveying mechanism includes two longitudinally symmetrically arranged conveying mounting frames. The conveying mounting frames are U-shaped frames with their openings facing downwards. The conveying mounting frames are located on the outside of the conveyor frame and their lower ends are welded to the upper surface of the assembly platform. Two transversely symmetrical conveying support rollers are rotatably mounted between the two conveying mounting frames. A tire conveying motor is fixed on the outer side wall of each conveying mounting frame. The output shaft end of the tire conveying motor passes through the side wall of the conveying mounting frame and is fixed to the center of the side end face of the corresponding conveying support roller. A tire conveyor belt is fitted between the two conveyor support rollers.

4. The automatic assembly and pressure testing machine for tires and hubs of trackless loaders according to claim 3, characterized in that: The upper half of the assembly support frame extends laterally, the lower half of the assembly support frame extends vertically and spans the two conveying mounting frames, and the lower end of the assembly support frame is welded to the upper surface of the assembly platform. The upper part of the assembly support frame is provided with a connecting longitudinal beam, which is fixed to the assembly support frame by bolts. Two supporting vertical beams are clamped on the other side of the assembly support frame, and the lower ends of the supporting vertical beams are welded to the upper surface of the conveyor frame.

5. The automatic assembly and pressure testing machine for tires and hubs of trackless loaders according to claim 4, characterized in that: An assembly positioning camera is fixed to the middle of the lower surface of the electronic control integrated box; A loading recognition camera is fixed on each longitudinal inner wall of the assembly support frame, and the loading recognition camera is slightly higher than the upper surface of the tire conveyor belt; A filling side plate is fixed in the gap between the assembly platform and the conveyor frame; Each of the filling side plates is fixed with a side mounting arm on its outer side wall. The side mounting arm is located on the outer side of the upwardly inclined part of the conveyor frame. A horizontal positioning telescopic cylinder is fixed on the upper inner wall of each side mounting arm. A hub positioning push plate is fixed to the telescopic end of the positioning telescopic cylinder. A lifting ejection module is also provided between the two filling side plates. The lifting ejection module is fixed on the upper surface of the assembly platform. A lifting support plate is fixed at the upper telescopic end of the lifting ejection module. Several horizontally spaced ejection positioning plates are welded to the upper surface of the lifting support plate. The ejection positioning plates are located between two adjacent hub conveyor rollers.

6. The automatic assembly and pressure testing machine for tires and hubs of trackless loaders according to claim 5, characterized in that: The inflation and pressurization assembly includes two pressurization and inflation stations, each of which has a built-in air booster pump. The two pressurization and inflation stations are respectively fixed on the longitudinal outer wall of the two filling side plates. Each of the pressurization and inflation stations is connected to an external air delivery pipe, and a high-pressure inflation gun is connected to the end of the air delivery pipe.

7. The automatic assembly and pressure testing machine for tires and hubs of trackless loaders according to claim 6, characterized in that: The sorting and conveying assembly includes a first conveyor frame and a second conveyor frame. The first conveyor frame and the second conveyor frame are U-shaped frames with longitudinal openings. The openings of the first conveyor frame and the second conveyor frame face opposite directions. The first conveyor frame and the second conveyor frame are respectively fixed to the two transverse outer walls of the support base. The first conveyor frame has a number of synchronously rolling qualified product conveying rollers rotatably installed inside, and the second conveyor frame has a number of synchronously rolling defective product conveying rollers rotatably installed inside. A first conveyor motor and a second conveyor motor are respectively fixed on the two longitudinal side walls of the support base. The output shaft end of the first conveyor motor is fixedly connected to the first qualified product conveyor roller, and the output shaft end of the second conveyor motor is fixedly connected to the first defective product conveyor roller. Vertical guide plates are fixed to the upper surfaces of the first conveyor frame and the second conveyor frame respectively. The two vertical guide plates are respectively located on the horizontal sides of the leakage detection box, so as to directly guide the tested tires to the qualified product conveyor roller or the defective product conveyor roller.

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