Hub full-automatic conveying air tightness detection device

Abstract

The utility model discloses a wheel hub full-automatic conveying air tightness detection device, which comprises a main body frame, an air tightness detection assembly is arranged in the middle of the main body frame, the air tightness detection assembly comprises a positioning support and a driving motor, and the driving motor drives the positioning support to rotate relative to the main body frame when working; the positioning support is provided with a first oil cylinder which rotates synchronously with the positioning support, a piston rod of the first oil cylinder is provided with a middle pressing disc, and the piston rod of the first oil cylinder is provided with an air inlet nozzle; a water tank assembly capable of ascending and descending relative to the positioning support is arranged below the air tightness detection assembly, and feeding and discharging assemblies arranged in pairs are arranged on the left side and the right side of the air tightness detection assembly. The feeding and discharging assemblies are arranged on the two sides of the air tightness detection assembly, and automatic feeding and discharging of hubs are completed through the feeding and discharging assemblies; the first oil cylinder controls the middle pressing disc to position the hub, so that the hub is reliably fixed to the positioning support, fixing is reliable, and the sealing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub detection devices, and particularly relates to a wheel hub full-automatic conveying air tightness detection device. Background Art

[0002] After wheel hubs are manufactured, they typically undergo an airtightness test. Only qualified hubs can be used with tires. Patent publication number CN111829732A discloses a wheel hub airtightness testing device and method. Existing wheel hub testing equipment often operates at a single station, requiring manual placement of the hub. Due to the hub's heavy weight, placement is laborious and slow. Existing testing methods often rely on checking the rim for air leaks under a certain pressure, leaving limited space for hub placement. Sometimes, a robotic arm is used to grip and unload the hub around the testing device. However, the robotic arm's rotation radius is often large, which takes up considerable space and increases manufacturing costs. Furthermore, existing pressure-tightness wheel hub testing devices often suffer from poor sealing performance and are typically rigidly fixed. Air leaks are easily detected between the hub and the sealing fixture, making it difficult to accurately test the hub's airtightness. Therefore, a fully automated wheel hub transport and airtightness testing device is needed to overcome these challenges. Utility Model Content

[0003] In response to the problems existing in the prior art, the utility model designs a fully automatic wheel hub conveying air tightness detection device. The utility model sets up loading and unloading components on both sides of the air tightness detection component, and completes the automatic loading and unloading of the wheel hub through the loading and unloading components; the middle pressure plate is controlled by the first oil cylinder to position and tighten the wheel hub, so that the wheel hub is reliably fixed on the positioning bracket, and the fixation is reliable and the sealing effect is good.

[0004] The utility model object of the present utility model is achieved through the following technical solutions: a fully automatic wheel hub transport air tightness detection device, comprising a main frame, an air tightness detection component is provided in the middle of the main frame, the air tightness detection component comprises a positioning bracket and a drive motor, and the drive motor drives the positioning bracket to rotate relative to the main frame when working; the positioning bracket is provided with a first oil cylinder that rotates synchronously with the positioning bracket, the piston rod of the first oil cylinder is provided with an intermediate pressure plate, and the piston rod of the first oil cylinder is provided with an air inlet nozzle; a water tank component that can be raised and lowered relative to the positioning bracket is provided below the air tightness detection component, and paired loading and unloading components are provided on the left and right sides of the air tightness detection component.

[0005] Preferably, the loading and unloading assembly includes a first cylinder, a fixed plate and a lifting plate; a first rail arranged in pairs is provided on the main frame, and the fixed plate is slidably installed on the first rail; the first cylinder is installed on the main frame, and the piston shaft of the first cylinder is connected to the fixed plate; the fixed plate is provided with a number of first guide columns that can move up and down relative to it, and the fixed plate is provided with a lifting cylinder, the piston shaft of the lifting cylinder is connected to the lifting plate, and the lower end face of the lifting plate is connected to the top of the first guide column; the bottom of the first guide column is provided with a clamping assembly for clamping the wheel hub, and a transmission assembly for transporting the wheel hub is provided below the clamping assembly.

[0006] The lifting cylinder controls the up and down movement of the clamping assembly, making it easy to remove the wheel hub from the transmission assembly; the first cylinder controls the movement of the fixed plate, thereby placing the wheel hub on the air tightness detection assembly. The entire process is automatically grasped, and the grasping efficiency is high and reliable. At the same time, the two loading and unloading assemblies are arranged side by side near the left and right sides of the air tightness detection assembly, occupying a small space. When the first cylinder is working, it controls the fixed plate to move along the first track, and the first track is set toward the air tightness detection assembly; when the lifting cylinder is working, it controls the up and down movement of the lifting plate, and the lifting plate is connected to the clamping assembly through the first guide column; then, after the first cylinder and the lifting cylinder work together, the clamping assembly can move up and down, forward and backward, thereby facilitating the movement of the wheel hub in two-dimensional space, making it convenient to grasp and place the wheel hub.

[0007] Preferably, the clamping assembly includes a grabbing frame, a second cylinder and a pair of clamping claw arms; the upper end face of the grabbing frame is fixedly mounted on the bottom of the first guide column, and the second cylinder is fixedly mounted on the upper end face of the grabbing frame; a pair of second rails are provided below the grabbing frame, and a rack is provided between the two second rails; a first slider is provided on the second rail, and the rack is fixedly mounted on the first slider; second rails and racks are provided on the left and right sides of the grabbing frame, and first sliders are provided on the second rails on the left and right sides; a transmission gear is provided between the two racks, and the transmission gear and the rack are engaged with each other; a clamping head connecting the two is provided between the second cylinder and one of the first sliders, and when the second cylinder is working, it controls the first slider to move along the second rail, and when one of the first sliders moves, it drives the other first slider to move along the second rail on the other side through the transmission gear; each of the first sliders is provided with a clamping claw arm fixedly connected to it.

[0008] Preferably, the grabbing frame is provided with a strip hole for inserting the clamping head, the piston shaft of the second cylinder is hinged to the clamping head, and the clamping head is fixedly mounted on one of the first sliders; the bottom of the grabbing frame is provided with a limit plate fixedly connected to it, and the limit plate is provided with a transmission gear rotatably connected to it; the limit plate is arranged between the two first sliders, and the second cylinder controls the two first sliders to approach or move away from each other when working; the end of the clamping claw arm is provided with a number of clamping parts rotatably connected to it, and the outer contour of the clamping part and the outer contour of the hub are adapted to each other.

[0009] When the second cylinder is operating, it drives one of the first sliders to move along the second track. When the first slider moves, it drives the rack to move. Since both first sliders are equipped with racks, the two racks are connected by a transmission gear. When one of the first sliders moves, the other moves synchronously. Therefore, when the second cylinder is operating, it can simultaneously control the two first sliders to move closer to or farther from each other. A clamping claw arm is fixedly mounted on the first slider. The two clamping claw arms can then move closer to or farther from each other synchronously, improving the synchronization of the clamping claw arms in gripping the wheel hub. By providing a limit plate, the meshing state of the transmission gear and the rack is more stable, and the clamping claw arms are more effective in gripping the wheel hub. By providing a clamping member, the clamping claw arms are prevented from damaging the outer side of the wheel hub.

[0010] Preferably, the transmission assembly includes mounting frames arranged in pairs, with a number of double sprocket rollers rotatably connected to the two mounting frames provided between the two mounting frames; a number of first motors for driving the double sprocket rollers to rotate are provided on the sides of the mounting frames, and a chain assembly for transmission is provided between the first motors and the double sprocket rollers.

[0011] When the first motor is working, the double sprocket roller is driven to rotate relative to the mounting frame through the chain assembly. When the double sprocket roller rotates, the wheel hub can be easily driven to move, so that the wheel hub can be continuously transported.

[0012] Preferably, the first oil cylinder is mounted on the main frame through a first bearing, and a suspension shaft is provided between the first oil cylinder and the positioning bracket to fix the two; the outer layer of the first oil cylinder is provided with a first gear that rotates synchronously with the first oil cylinder, the motor shaft of the drive motor is provided with a second gear that rotates synchronously with the first oil cylinder, and a third gear for transmission is provided between the first gear and the second gear; the bottom of the positioning bracket is provided with a first sealing locator for placing the wheel hub, the end of the first oil cylinder is provided with an intermediate pressure plate, and the intermediate pressure plate is provided with a second sealing locator; the air intake nozzle and the intermediate pressure plate are connected to each other.

[0013] When the first oil cylinder is working, it controls the intermediate pressure plate to descend. A first sealing locator is provided at the bottom of the positioning bracket, and a second sealing locator is provided on the intermediate pressure plate, so that the wheel hub will be clamped between the first sealing locator and the second sealing locator; the first sealing locator and the second sealing locator are both made of polyurethane material, with good sealing effect and strong plasticity; the outer contours of the first sealing locator and the second sealing locator are both adapted to the outer contour of the wheel hub, so that the wheel hub can be reliably fixed on the positioning bracket; when the driving motor is working, it drives the first oil cylinder and the positioning bracket to rotate synchronously, so that the positioning bracket and the wheel hub will not slide against each other, and the wheel hub detection process is more reliable.

[0014] Preferably, the driving motor is fixedly mounted on the main frame, and the main frame is provided with a rotating shaft and a bearing seat for mounting a third gear; the rotating shaft is mounted in the bearing seat through a second bearing, and the rotating shaft is rotatably connected to the main frame; the end of the rotating shaft is provided with a third gear fixedly connected to it; the main frame is provided with a bushing fixedly connected to it, a first bearing is provided between the bushing and the hanging shaft, and the hanging shaft is fixedly connected to the first oil cylinder; a locking nut for fixing the two is provided between the first gear and the first oil cylinder, and a fastener for fixing the three is provided between the first oil cylinder, the locking nut and the hanging shaft, and the fastener extends from the first oil cylinder and is installed in the hanging shaft; the open end of the bushing is provided with a cover body fixedly connected to it, and an air supply ring is provided between the cover body and the locking nut.

[0015] When the drive motor is working, it drives the second gear to rotate. The rotation of the second gear drives the third gear to rotate relative to the bearing seat. When the third gear rotates, it drives the first gear to rotate. The first gear is fixed to the first oil cylinder by a locking nut and fasteners. Therefore, when the drive motor is working, the first oil cylinder as a whole can rotate relative to the main frame. By setting a sleeve and a hanging shaft, the first oil cylinder is vertically installed on the main frame. The first oil cylinder and the first sealing locator and the second sealing locator are all coaxially arranged, thus ensuring that the first sealing locator and the second sealing locator are accurately positioned and press the wheel hub. The first oil cylinder is assembled with each other through the sleeve and the hanging shaft to achieve better concentricity, and the first oil cylinder will not deflect during rotation. By setting a cover body, an air supply ring and a locking nut to cooperate with each other, it is convenient to support the first oil cylinder. One end of the air supply ring rests on the locking nut, and the other end of the air supply ring rests on the cover body.

[0016] Preferably, a plurality of oil inlet joints are provided on the top of the first oil cylinder, and the oil inlet joints are rotary joints; a plurality of air inlet joints are also provided around the oil inlet joints; the air inlet nozzle is installed on the side wall of the piston rod of the first oil cylinder, and an air vent pipe connected to the air inlet nozzle is provided on the piston rod of the first oil cylinder, and an angle seat valve connected to the air vent pipe is provided at the end of the air vent pipe.

[0017] The oil inlet joint is a rotary joint, connected to the oil inlet pipe (not shown). This ensures that the first cylinder rotates without interfering with the oil inlet pipe. Both the air inlet nozzle and the air inlet joint are connected to the air inlet pipe (not shown). The air inlet pipe is a common air pipe used in existing pneumatic tools and consists of a main pipe and a rotary joint. When installed on the air inlet nozzle, the air inlet pipe can rotate relative to the air inlet nozzle; similarly, the air inlet pipe can also rotate relative to the air inlet joint. The provision of an air bleed pipe and an angle seat valve facilitates adjustment of the pressure between the wheel hub and the intermediate pressure plate.

[0018] Preferably, a water tank assembly is provided directly below the positioning bracket, and the water tank assembly includes a mounting seat, a third cylinder, a water tank connecting seat and a water tank body; the mounting seat is fixedly installed on the main frame, and a third rail is provided on the mounting seat, and a water tank connecting seat is provided on the third rail for sliding connection therewith; the third cylinder is fixedly installed on the mounting seat, and the piston shaft of the third cylinder is connected to the water tank connecting seat, and the water tank connecting seat and the water tank body are fixedly connected; an inlet valve is provided at the top open end of the water tank body, and a travel switch is also provided on the mounting seat; an intermediate pressure plate is provided on the piston shaft of the first oil cylinder, and the travel switch is arranged between the intermediate pressure plate and the water tank body; lighting components are provided in pairs on the main frame, and the lighting components are arranged facing the water tank body.

[0019] When the third cylinder is in operation, it controls the vertical movement of the mounting base along the third track. This movement drives the water tank body up and down, allowing it to submerge the wheel hub. The motor then drives the positioning bracket to rotate as a whole, allowing the operator to stand directly in front of the water tank body and observe whether there are bubbles on the wheel hub surface. Lighting is provided for enhanced observation. A travel switch automatically stops the water tank body, preventing interference between the water tank body and the bottom of the positioning bracket.

[0020] Preferably, the two loading and unloading assemblies are symmetrically arranged on the left and right sides of the airtightness detection assembly, and the loading and unloading assemblies include a clamping assembly, and the clamping assembly includes a pair of clamping claw arms, and the clamping claw arms extend toward the positioning bracket; the positioning bracket includes a plurality of positioning rods arranged side by side, and the clamping claw arms are arranged between the positioning rods. In this way, when the clamping claw arms are telescopically moved, the clamping claw arms will not interfere with the positioning bracket.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses the loading and unloading assembly to automatically grab the wheel hub and place it in the airtightness testing assembly for testing. After the test is completed, the wheel hub is removed by the loading and unloading assembly, and multiple wheel hubs can be tested continuously in sequence. 2. The clamping assembly of the loading and unloading assembly can reliably grab the wheel hub and accurately place it on the positioning bracket. Once the wheel hub is in place, no manual position adjustment is required, resulting in high placement efficiency and good placement effect, greatly improving overall testing efficiency. 3. The transmission assembly and the clamping assembly cooperate to transfer the wheel hub, and the clamping assembly only moves axially within a two-dimensional space, so the overall loading and unloading assembly occupies a small space and has low manufacturing costs. 4. The first oil cylinder controls the first and second sealing locators to press the wheel hub, achieving an effective fixation and maintaining good airtightness. 5. The drive motor drives the positioning bracket and the first oil cylinder to rotate synchronously, so that the wheel hub and the positioning bracket rotate synchronously, so that the wheel hub does not slide relative to the positioning bracket during testing. At the same time, the wheel hub rotates automatically, and the operator does not need to move around to observe, making observation more convenient. 6. The water tank body in the water tank assembly automatically rises and falls, making it easy to observe whether there are bubbles on the surface of the wheel hub, thereby intuitively analyzing the air tightness of the wheel hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 A three-dimensional diagram from another perspective of the present invention;

[0024] Figure 3 This is the main view of the utility model;

[0025] Figure 4 It is a three-dimensional diagram of the loading and unloading components;

[0026] Figure 5 is a perspective view of the gripping assembly;

[0027] Figure 6 A three-dimensional diagram of the gripping assembly from another perspective;

[0028] Figure 7 is a three-dimensional diagram of the transmission assembly;

[0029] Figure 8 A three-dimensional diagram of the air tightness detection component and the water tank component during assembly;

[0030] Figure 9 Schematic diagram of the working state of the water tank assembly;

[0031] Figure 10 It is a three-dimensional diagram of the airtightness detection component;

[0032] Figure 11 This is the internal structure diagram of the air tightness detection component;

[0033] Markings in the figure: 1. Main frame; 2. Air tightness detection component; 21. Positioning bracket; 22. Drive motor; 23. First oil cylinder; 24. Intermediate pressure plate; 25. Air inlet nozzle; 26. First gear; 27. Second gear; 28. Positioning rod; 29. Third gear; 210. Rotating shaft; 211. Bearing seat; 212. Second bearing; 213. Bushing; 214. Locking nut; 215. Cover; 216. Air supply ring; 217. Fastener; 3. Water tank assembly; 31. Mounting seat; 32. Third cylinder; 33. Water tank connecting seat; 34. Water tank body; 35. Third track; 36. Water inlet valve; 37. Travel switch; 4. Loading and unloading assembly; 41. First cylinder; 42. Fixing Fixed plate; 43. Lifting plate; 44. First guide column; 45. Lifting cylinder; 5. First track; 6. Clamping assembly; 61. Grasping frame; 62. Second cylinder; 63. Clamping claw arm; 64. Second track; 65. Rack; 66. First slider; 67. Clamping head; 68. Strip hole; 69. Limiting plate; 610. Clamping member; 611. Transmission gear; 7. Transmission assembly; 71. Mounting frame; 72. Double sprocket roller; 73. First motor; 74. Chain assembly; 8. First bearing; 9. Hanging shaft; 10. First sealing locator; 11. Second sealing locator; 12. Oil inlet connector; 13. Air inlet connector; 14. Vent pipe; 15. Angle seat valve; 16. Lighting member. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0035] like Figures 1 to 11 As shown, this embodiment discloses a fully automatic transport air tightness detection device for a wheel hub, comprising a main frame 1, an air tightness detection component 2 is provided in the middle of the main frame 1, the air tightness detection component 2 comprises a positioning bracket 21 and a drive motor 22, and the drive motor 22 drives the positioning bracket 21 to rotate relative to the main frame 1 when working; the positioning bracket 21 is provided with a first oil cylinder 23 that rotates synchronously with the positioning bracket 21, the piston rod of the first oil cylinder 23 is provided with an intermediate pressure plate 24, and the piston rod of the first oil cylinder 23 is provided with an air inlet nozzle 25; a water tank component 3 that can be raised and lowered relative to the positioning bracket 21 is provided below the air tightness detection component 2, and paired loading and unloading components 4 are provided on the left and right sides of the air tightness detection component 2.

[0036] The loading and unloading assembly 4 includes a first cylinder 41, a fixed plate 42 and a lifting plate 43; the main frame 1 is provided with a pair of first rails 5, and the fixed plate 42 is slidably installed on the first rails 5; the first cylinder 41 is installed on the main frame 1, and the piston shaft of the first cylinder 41 is connected to the fixed plate 42; the fixed plate 42 is provided with a number of first guide columns 44 that can move up and down relative to it, and the fixed plate 42 is provided with a lifting cylinder 45, the piston shaft of the lifting cylinder 45 is connected to the lifting plate 43, and the lower end face of the lifting plate 43 is connected to the top of the first guide column 44; the bottom of the first guide column 44 is provided with a clamping assembly 6 for clamping the wheel hub, and a transmission assembly 7 for transporting the wheel hub is provided below the clamping assembly 6. The gripping assembly 6 includes a gripping frame 61, a second cylinder 62 and a pair of clamping claw arms 63; the upper end surface of the gripping frame 61 is fixedly mounted on the bottom of the first guide column 44, and the second cylinder 62 is fixedly mounted on the upper end surface of the gripping frame 61; a pair of second rails 64 are provided below the gripping frame 61, and a rack 65 is provided between the two second rails 64; a first slider 66 is provided on the second rail 64, and the rack 65 is fixedly mounted on the first slider 66; the left and right sides of the gripping frame 61 are both provided with second rails 64 and racks 65, and the left and right sides are provided with a plurality of second rails 64 and racks 65. A first slider 66 is provided on each of the second rails 64; a transmission gear 611 is provided between the two racks 65, and the transmission gear 611 and the rack 65 are engaged with each other; a clamping head 67 connecting the second cylinder 62 and one of the first sliders 66 is provided, and when the second cylinder 62 is working, it controls the first slider 66 to move along the second rail 64, and when one of the first sliders 66 moves, it drives the other first slider 66 to move along the second rail 64 on the other side through the transmission gear 611; each of the first sliders 66 is provided with a clamping claw arm 63 fixedly connected thereto. The gripping frame 61 is provided with a strip hole 68 for inserting the gripping head 67. The piston shaft of the second cylinder 62 is hingedly connected to the gripping head 67, and the gripping head 67 is fixedly mounted on one of the first sliders 66. The bottom of the gripping frame 61 is provided with a limit plate 69 fixedly connected thereto, and the limit plate 69 is provided with a transmission gear 611 rotatably connected thereto. The limit plate 69 is arranged between the two first sliders 66, and when the second cylinder 62 is in operation, the two first sliders 66 are controlled to move closer to or away from each other. The end of the clamping claw arm 63 is provided with a plurality of gripping members 610 rotatably connected thereto, and the outer contour of the gripping members 610 is adapted to the outer contour of the wheel hub. The transmission assembly 7 includes a pair of mounting frames 71, with a plurality of dual sprocket rollers 72 rotatably connected between the two mounting frames 71. The side of the mounting frame 71 is provided with a plurality of first motors 73 for driving the dual sprocket rollers 72 to rotate, and a chain assembly 74 for transmission is provided between the first motors 73 and the dual sprocket rollers 72.

[0037] The first oil cylinder 23 is mounted on the main frame 1 through the first bearing 8, and a hanging shaft 9 is provided between the first oil cylinder 23 and the positioning bracket 21 to fix the two; the outer layer of the first oil cylinder 23 is provided with a first gear 26 that rotates synchronously with the first oil cylinder 23, and the motor shaft of the driving motor 22 is provided with a second gear 27 that rotates synchronously with the first oil cylinder 23, and a third gear 29 for transmission is provided between the first gear 26 and the second gear 27; the bottom of the positioning bracket 21 is provided with a first sealing positioning member 10 for placing the wheel hub, and the end of the first oil cylinder 23 is provided with an intermediate pressure plate 24, and the intermediate pressure plate 24 is provided with a second sealing positioning member 11; the air intake nozzle 25 and the intermediate pressure plate 24 are connected to each other. The driving motor 22 is fixedly mounted on the main frame 1, and the main frame 1 is provided with a rotating shaft 210 and a bearing seat 211 for mounting a third gear 29; the rotating shaft 210 is mounted in the bearing seat 211 through a second bearing 212, and the rotating shaft 210 is rotatably connected to the main frame 1; the end of the rotating shaft 210 is provided with a third gear 29 fixedly connected to it; the main frame 1 is provided with a shaft sleeve 213 fixedly connected to it, and a first bearing 8 is provided between the shaft sleeve 213 and the hanging shaft 9, and the hanging shaft 9 is fixedly connected to the first oil cylinder 23; a locking nut 214 for fixing the two is provided between the first gear 26 and the first oil cylinder 23, and a fastener 217 for fixing the three is provided between the first oil cylinder 23, the locking nut 214 and the hanging shaft 9, and the fastener 217 extends from the first oil cylinder 23 and is installed in the hanging shaft 9; the open end of the shaft sleeve 213 is provided with a cover body 215 fixedly connected to it, and an air supply ring 216 is provided between the cover body 215 and the locking nut 214. A plurality of oil inlet joints 12 are provided on the top of the first oil cylinder 23, and the oil inlet joints 12 are rotary joints; a plurality of air inlet joints 13 are also provided around the oil inlet joints 12; the air inlet nozzle 25 is installed on the side wall of the piston rod of the first oil cylinder 23, and the piston rod of the first oil cylinder 23 is provided with an air release pipe 14 connected to the air release nozzle 25, and the end of the air release pipe 14 is provided with an angle seat valve 15 connected thereto.A water tank assembly 3 is provided directly below the positioning bracket 21, and the water tank assembly 3 includes a mounting seat 31, a third cylinder 32, a water tank connecting seat 33 and a water tank body 34; the mounting seat 31 is fixedly mounted on the main frame 1, and a third rail 35 is provided on the mounting seat 31, and a water tank connecting seat 33 is provided on the third rail 35 to be slidably connected thereto; the third cylinder 32 is fixedly mounted on the mounting seat 31, and the piston shaft of the third cylinder 32 is connected to the water tank connecting seat 33, and the water tank connecting seat 33 and the water tank body 34 are fixedly connected; a water inlet valve 36 is provided at the top open end of the water tank body 34, and a travel switch 37 is also provided on the mounting seat 31; an intermediate pressure plate 24 is provided on the piston shaft of the first oil cylinder 23, and the travel switch 37 is arranged between the intermediate pressure plate 24 and the water tank body 34; a pair of lighting components 16 are provided on the main frame 1, and the lighting components 16 are arranged toward the water tank body 34. The two loading and unloading components 4 are symmetrically arranged on the left and right sides of the air tightness detection component 2, and the loading and unloading components 4 include a clamping component 6, and the clamping component 6 includes a pair of clamping claw arms 63, and the clamping claw arms 63 extend toward the positioning bracket 21; the positioning bracket 21 includes several positioning rods 28 arranged side by side, and the clamping claw arms 63 are arranged between the positioning rods 28.

[0038] The specific operation process of this embodiment is as follows: the wheel hub to be tested is placed on the transmission assembly 7, and the lifting cylinder 45 is used to control the clamping assembly 6 to move up and down, so as to facilitate the removal of the wheel hub from the transmission assembly 7; the first cylinder 41 is used to control the movement of the fixed plate 42, so as to place the wheel hub on the air tightness detection assembly 2, and the whole process is automatically grasped, and the grasping efficiency is high and reliable. At the same time, the two loading and unloading assemblies 4 are arranged side by side near the left and right sides of the air tightness detection assembly 2, and occupy a small space. When the first cylinder 41 is working, it controls the fixed plate 42 to move along the first track 5, and the first track 5 is set toward the air tightness detection assembly 2; when the lifting cylinder 45 is working, it controls the lifting plate 43 to move up and down, and the lifting plate 43 is connected to the clamping assembly 6 through the first guide column 44; then, after the first cylinder 41 and the lifting cylinder 45 work together, the clamping assembly 6 can move up and down, front and back, so as to facilitate the grasping of the wheel hub to move in two-dimensional space, and facilitate the grasping and placement of the wheel hub.

[0039] The clamping assembly 6 operates as follows: When the second cylinder 62 is in operation, it drives one of the first sliders 66 to move along the second track 64. The movement of the first slider 66 drives the rack 65 to move. Since both first sliders 66 are equipped with a rack 65 and the two racks 65 are connected by a transmission gear 611, when one of the first sliders 66 moves, the other one will move synchronously. Therefore, when the second cylinder 62 is in operation, it can simultaneously control the two first sliders 66 to move toward or away from each other. The first slider 66 is fixedly mounted with a clamping claw arm 63. This allows the two clamping claw arms 63 to move toward or away from each other synchronously, improving the synchronization of the clamping claw arms 63 in gripping the wheel hub. By providing a limit plate 69, the meshing state between the transmission gear 611 and the rack 65 is more stable, and the clamping claw arms 63 are more effective in gripping the wheel hub. The provision of a clamping member 610 prevents the clamping claw arms 63 from damaging the outer side of the wheel hub.

[0040] After the loading and unloading assembly 4 places the wheel hub on the positioning bracket 21, the air tightness detection assembly 2 starts working; when the first oil cylinder 23 is working, it controls the intermediate pressure plate 24 to descend. The bottom of the positioning bracket 21 is provided with a first sealing locator 10, and the intermediate pressure plate 24 is provided with a second sealing locator 11, so that the wheel hub will be clamped between the first sealing locator 10 and the second sealing locator 11; the first sealing locator 10 and the second sealing locator 11 are both made of polyurethane material, which has a good sealing effect and strong plasticity; the outer contours of the first sealing locator 10 and the second sealing locator 11 are adapted to the outer contour of the wheel hub, so that the wheel hub can be reliably fixed on the positioning bracket 21; when the drive motor 22 is working, it drives the first oil cylinder 23 and the positioning bracket 21 to rotate synchronously, so that the positioning bracket 21 and the wheel hub will not slide against each other, and the wheel hub detection process is more reliable. After the first oil cylinder 23 controls the intermediate pressure plate 24 to fix the wheel hub, the water tank assembly 3 starts working, and then the drive motor 22 drives the positioning bracket 21 and the wheel hub to rotate together. The water tank assembly 3 operates as follows: The third cylinder 32 controls the vertical movement of the mounting base 31 along the third track 35. This movement of the mounting base 31 drives the water tank body 34 up and down, allowing the water tank body 34 to submerge the wheel hub. The motor 22 then drives the positioning bracket 21 to rotate as a whole, allowing the operator to stand directly in front of the water tank body 34 and observe whether there are bubbles on the wheel hub surface. The illumination element 16 enhances this observation. A limit switch 37 automatically stops the water tank body 34, preventing interference between the water tank body 34 and the bottom of the positioning bracket 21.

[0041] After the wheel hub is submerged in the water tank body 34, the drive motor 22 starts to drive the second gear 27 to rotate. The rotation of the second gear 27 drives the third gear 29 to rotate relative to the bearing seat 211. When the third gear 29 rotates, it drives the first gear 26 to rotate. The first gear 26 is fixedly mounted on the first oil cylinder 23 by the locking nut 214 and the fastener 217. Therefore, when the drive motor 22 is working, the first oil cylinder 23 can rotate as a whole relative to the main frame 1. By setting the shaft sleeve 213 and the hanging shaft 9, the first oil cylinder 23 is vertically mounted on the main frame 1. The first oil cylinder 23 and the first sealing locator 10 and the second sealing locator 11 are all coaxially arranged, thus ensuring that the first sealing locator 10 and the second sealing locator 11 are accurately positioned and press the wheel hub. The first oil cylinder 23 is assembled with the shaft sleeve 213 and the hanging shaft 9 to have better concentricity, and the first oil cylinder 23 will not deflect during rotation.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A wheel hub fully automatic transport air tightness detection device, comprising a main frame (1), characterized in that: An airtightness detection assembly (2) is provided in the middle of the main frame (1), and the airtightness detection assembly (2) includes a positioning bracket (21) and a driving motor (22). When the driving motor (22) is in operation, it drives the positioning bracket (21) to rotate relative to the main frame (1); a first oil cylinder (23) is provided on the positioning bracket (21) and rotates synchronously with the positioning bracket, an intermediate pressure plate (24) is provided on the piston rod of the first oil cylinder (23), and an air inlet nozzle (25) is provided on the piston rod of the first oil cylinder (23); a water tank assembly (3) capable of rising and falling relative to the positioning bracket (21) is provided below the airtightness detection assembly (2), and paired loading and unloading assemblies (4) are provided on the left and right sides of the airtightness detection assembly (2).

2. The wheel hub fully automatic transport air tightness detection device according to claim 1, characterized in that: The loading and unloading assembly (4) includes a first cylinder (41), a fixed plate (42) and a lifting plate (43); a first rail (5) arranged in pairs is provided on the main frame (1), and the fixed plate (42) is slidably installed on the first rail (5); the first cylinder (41) is installed on the main frame (1), and the piston shaft of the first cylinder (41) is connected to the fixed plate (42); the fixed plate (42) is provided with a plurality of first guide columns (44) that can move up and down relative to the fixed plate (42), and the fixed plate (42) is provided with a lifting cylinder (45), the piston shaft of the lifting cylinder (45) is connected to the lifting plate (43), and the lower end surface of the lifting plate (43) is connected to the top of the first guide column (44); the bottom of the first guide column (44) is provided with a clamping assembly (6) for clamping the wheel hub, and the bottom of the clamping assembly (6) is provided with a transmission assembly (7) for transporting the wheel hub.

3. The wheel hub fully automatic transport air tightness detection device according to claim 2, characterized in that: The gripping assembly (6) includes a gripping frame (61), a second cylinder (62) and a pair of clamping claw arms (63); the upper end surface of the gripping frame (61) is fixedly mounted on the bottom of the first guide column (44), and the second cylinder (62) is fixedly mounted on the upper end surface of the gripping frame (61); a pair of second rails (64) are provided below the gripping frame (61), and a rack (65) is provided between the two second rails (64); a first slider (66) is provided on the second rail (64), and the rack (65) is fixedly mounted on the first slider (66); the left and right sides of the gripping frame (61) are both provided with second rails (64) and racks (65), and the left and right sides are provided with second rails (64) and racks (65). A first slider (66) is provided on each of the second rails (64) on the side; a transmission gear (611) is provided between the two racks (65), and the transmission gear (611) and the rack (65) are meshed with each other; a clamping head (67) is provided between the second cylinder (62) and one of the first sliders (66) to connect the two; when the second cylinder (62) is working, it controls the first slider (66) to move along the second rail (64); when one of the first sliders (66) moves, it drives the other first slider (66) to move along the second rail (64) on the other side through the transmission gear (611); each of the first sliders (66) is provided with a clamping claw arm (63) fixedly connected thereto.

4. The wheel hub fully automatic transport air tightness detection device according to claim 3, characterized in that: The grabbing frame (61) is provided with a strip hole (68) for inserting the clamping head (67), the piston shaft of the second cylinder (62) is hinged to the clamping head (67), and the clamping head (67) is fixedly mounted on one of the first sliders (66); the bottom of the grabbing frame (61) is provided with a limit plate (69) fixedly connected thereto, and the limit plate (69) is provided with a transmission gear (611) rotatably connected thereto; the limit plate (69) is arranged between the two first sliders (66), and the second cylinder (62) controls the two first sliders (66) to move closer to or away from each other when working; the end of the clamping claw arm (63) is provided with a plurality of clamping members (610) rotatably connected thereto, and the outer contour of the clamping member (610) is adapted to the outer contour of the hub.

5. The wheel hub fully automatic transport air tightness detection device according to claim 2, characterized in that: The transmission assembly (7) comprises mounting frames (71) arranged in pairs, with a plurality of double sprocket rollers (72) rotatably connected to the mounting frames (71) being provided between the two mounting frames (71); a plurality of first motors (73) for driving the double sprocket rollers (72) to rotate are provided on the side surfaces of the mounting frames (71); and a chain assembly (74) for transmission is provided between the first motors (73) and the double sprocket rollers (72).

6. The wheel hub fully automatic transport air tightness detection device according to claim 1, characterized in that: The first oil cylinder (23) is mounted on the main frame (1) via a first bearing (8), and a suspension shaft (9) is provided between the first oil cylinder (23) and the positioning bracket (21) to fix the two. The outer layer of the first oil cylinder (23) is provided with a first gear (26) that rotates synchronously with the first oil cylinder (23), the motor shaft of the driving motor (22) is provided with a second gear (27) that rotates synchronously with the first oil cylinder (23), and a third gear (29) for transmission is provided between the first gear (26) and the second gear (27). The bottom of the positioning bracket (21) is provided with a first sealing locator (10) for placing the wheel hub, the end of the first oil cylinder (23) is provided with an intermediate pressure plate (24), and the intermediate pressure plate (24) is provided with a second sealing locator (11); the air inlet nozzle (25) and the intermediate pressure plate (24) are connected to each other.

7. The wheel hub fully automatic transport air tightness detection device according to claim 6, characterized in that: The driving motor (22) is fixedly mounted on the main frame (1), and the main frame (1) is provided with a rotating shaft (210) and a bearing seat (211) for mounting a third gear (29); the rotating shaft (210) is mounted in the bearing seat (211) via a second bearing (212), and the rotating shaft (210) is rotatably connected to the main frame (1); the end of the rotating shaft (210) is provided with a third gear (29) fixedly connected thereto; the main frame (1) is provided with a shaft sleeve (213) fixedly connected thereto, and a first bearing (8) is provided between the shaft sleeve (213) and the hanging shaft (9). ), the hanging shaft (9) and the first oil cylinder (23) are fixedly connected; a locking nut (214) for fixing the first gear (26) and the first oil cylinder (23) is provided between the first gear (26) and the first oil cylinder (23); a fastener (217) for fixing the three is provided between the first oil cylinder (23), the locking nut (214) and the hanging shaft (9); the fastener (217) extends from the first oil cylinder (23) and is installed in the hanging shaft (9); the open end of the shaft sleeve (213) is provided with a cover body (215) fixedly connected thereto, and an air supply ring (216) is provided between the cover body (215) and the locking nut (214).

8. The wheel hub fully automatic transport air tightness detection device according to claim 6, characterized in that: The top of the first oil cylinder (23) is provided with a plurality of oil inlet joints (12), which are rotary joints; a plurality of air inlet joints (13) are also provided around the oil inlet joints (12); the air inlet nozzle (25) is mounted on the side wall of the piston rod of the first oil cylinder (23); the piston rod of the first oil cylinder (23) is provided with an air release pipe (14) in communication with the air inlet nozzle (25); and the end of the air release pipe (14) is provided with an angle seat valve (15) in communication with the air release pipe (14).

9. The wheel hub fully automatic transport air tightness detection device according to claim 6, characterized in that: A water tank assembly (3) is provided directly below the positioning bracket (21), and the water tank assembly (3) comprises a mounting base (31), a third cylinder (32), a water tank connecting base (33) and a water tank body (34); the mounting base (31) is fixedly mounted on the main frame (1), and a third rail (35) arranged in pairs is provided on the mounting base (31), and a water tank connecting base (33) slidably connected to the third rail (35); the third cylinder (32) is fixedly mounted on the mounting base (31), and the piston shaft of the third cylinder (32) is connected to the water tank body (34). A water tank connecting seat (33) is provided, wherein the water tank connecting seat (33) and the water tank body (34) are fixedly connected; a water inlet valve (36) is provided at the top open end of the water tank body (34); a travel switch (37) is also provided on the mounting seat (31); an intermediate pressure plate (24) is provided on the piston shaft of the first oil cylinder (23), and the travel switch (37) is arranged between the intermediate pressure plate (24) and the water tank body (34); and lighting elements (16) are provided in pairs on the main frame (1), and the lighting elements (16) are arranged toward the water tank body (34).

10. The wheel hub fully automatic transport air tightness detection device according to claim 1, characterized in that: The two loading and unloading assemblies (4) are symmetrically arranged on the left and right sides of the air tightness detection assembly (2), and the loading and unloading assemblies (4) include a clamping assembly (6), and the clamping assembly (6) includes clamping claw arms (63) arranged in pairs, and the clamping claw arms (63) extend toward the positioning bracket (21); the positioning bracket (21) includes a plurality of positioning rods (28) arranged side by side, and the clamping claw arms (63) are arranged between the positioning rods (28).

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