New type of mobile vehicle tire changer

Abstract

This invention relates to a novel mobile vehicle-mounted tire changer / loader, belonging to the technical field of tire changer / loader equipment. The invention includes a guide rail assembly 6, characterized in that a main trolley 12 is mounted on the guide rail assembly 6, the rear end of the main trolley 12 is hinged to the rear end of a tilting device 14, and the front end of the main trolley 12 is hinged to the lower end of a tire changer mounting frame 16; the upper end of the tire changer mounting frame 16 is hinged to the front end of the tilting device 14; a cam groove 8 is provided on the upper end of the tire changer mounting frame 16, and a hinged connecting rod 10 is provided on the lower end of the tire changer mounting frame 16, the rear end of the hinged connecting rod 10 being hinged to the front end of the main trolley 12; a tire changer / loader B engages with the cam groove 8 via rollers 7 on a column 3, and the column 3 is hinged to the front end of the hinged connecting rod 10 via a hinge shaft 9; the tire changer / loader B is mounted on a housing 1.

Description

Technical Field

[0001] This invention belongs to the technical field of tire changing and mounting equipment, and particularly relates to a novel mobile vehicle-mounted tire changing and mounting machine. Background Technology

[0002] Vehicle tires typically consist of two parts: a metal rim and a rubber tire. The rim has a circumferential flange, and the tire has a circumferential bead. The tire bead of each tire fits snugly onto the flange. The rim and tire need to be frequently installed and removed for maintenance, inspection, and tire replacement. A tire changer is a machine that performs tire installation and removal. It typically consists of a chuck for clamping the tire, a tire-scraping system for separating the rim from the tire, a tire-changing tool system, a power system, a control system, and a support structure connecting these systems. The power system usually uses electricity and air. Tire changers are installed in tire shops or 4S stores. In the era of "Internet Plus," especially for new energy vehicle tire services, the service model has shifted from "you come to me" to "I go to you," requiring tire changers to be installed in a small transport vehicle for on-site service. Summary of the Invention

[0003] This invention addresses the aforementioned problems by providing a novel mobile vehicle-mounted tire changing and mounting machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: the present invention includes a guide rail assembly 6, characterized in that a main trolley 12 is provided on the guide rail assembly 6, the rear end of the main trolley 12 is hingedly connected to the rear end of the tilting device 14, the front end of the main trolley 12 is hingedly connected to the lower end of the tire changer mounting frame 16; the upper end of the tire changer mounting frame 16 is hingedly connected to the front end of the tilting device 14.

[0005] The upper end of the tire changer mounting frame 16 is provided with a cam groove 8, and the lower end of the tire changer mounting frame 16 is provided with a hinged connecting rod 10. The rear end of the hinged connecting rod 10 is hingedly connected to the front end of the main trolley 12.

[0006] Tire changer B engages with cam groove 8 via roller 7 on column 3. Column 3 is hinged to the front end of hinge rod 10 via hinge shaft 9. Tire changer B is mounted on housing 1.

[0007] As a preferred embodiment, the guide rail assembly 6 of the present invention includes a horizontal rail 11, and a roller is provided on the main trolley 12. The roller is disposed in the C-shaped groove 50 of the horizontal rail 11.

[0008] As another preferred embodiment, the flipping device 14 of the present invention adopts a flipping cylinder. The rear end of the main trolley 12 is provided with a rear hinge seat 13, which is hinged to the rear end of the flipping cylinder. The front end of the main trolley 12 is provided with a front hinge seat 15, which is hinged to the lower end of the tire changer mounting frame 16. The upper end of the tire changer mounting frame 16 is hinged to the front end of the flipping cylinder.

[0009] As another preferred embodiment, the rear hinge seat 13 of the present invention is provided with a limiting cylinder 66, and the horizontal track 11 is provided with locking holes corresponding to the piston rods of the limiting cylinder 66.

[0010] As another preferred embodiment, the tire changer B of the present invention includes a tire clamping plate 2 and a column 3 for clamping a tire C. The tire clamping plate 2 is located at the upper front end of the housing 1, and the column 3 is rigidly connected to the rear end of the housing 1. A swing arm 4 and an assistant 5 are provided on the column 3.

[0011] As another preferred embodiment, the lower end of the swing arm 4 of the present invention is provided with a swing arm pivot 17, and the swing arm pivot 17 is installed in the swing arm bushing 21 at the upper end of the column 3; a swing arm roller 18 is provided in the middle of the swing arm pivot 17, and the swing arm roller shaft 19 passes through the swing arm roller 18 and is connected to the swing arm pivot 17.

[0012] The swing arm roller 18 meshes with the column cam groove 22 on the swing arm bushing 21. The swing arm cylinder 24 is installed inside the column 3 below the swing arm bushing 21. The lower end of the swing arm cylinder 24 is hinged to the column 3. The piston rod 23 of the swing arm cylinder 24 is connected to the lower end of the swing arm shaft 17 through the pin 20.

[0013] As another preferred embodiment, the front end of the swing arm 4 of the present invention is provided with a push-pull arm 25 that can move horizontally along the swing arm 4, and the front end of the push-pull arm 25 is provided with a working arm 26 that can move vertically up and down on the push-pull arm 25; the upper end of the working arm 26 is provided with a cylinder bracket 27, and the lower end of the working arm 26 is provided with a working head 32; the upper end of the tire removal hook cylinder 28 is hinged to the cylinder bracket 27, and the tire removal hook piston rod 29 at the lower end of the tire removal hook cylinder 28 is hinged to the upper end of the tire removal hook 33 through a support shaft 49.

[0014] As another preferred embodiment, the swing arm 4 of the present invention is provided with a square hole, and the push-pull arm 25 is provided with a square shaft corresponding to the square hole; the front part of the push-pull arm 25 is provided with a hexagonal hole, and the working arm 26 is provided with a hexagonal shaft corresponding to the hexagonal hole.

[0015] As another preferred embodiment, the tire removal hook support body 30 of the present invention is bolted to the working head 32, the tire removal hook 33 is installed inside the tire removal hook support body 30, a hook slide 53 is provided above the tire removal hook support body 30, the roller on the support shaft 49 engages with the hook slide 53, the tire removal hook 33 is hinged to the lower connecting rod 31 through the first hook pin 51, and the lower connecting rod 31 is hinged to the tire removal hook support body 30 through the second hook pin 52.

[0016] As another preferred embodiment, the assistant 5 of the present invention is provided with a sliding column 34, the upper end of which is hinged to the column 3, and the lower end of which is hinged to the housing 1; the sliding column 34 is provided with a trolley 35 and an assistant cylinder 36 for driving the trolley 35 to move vertically up and down along the sliding column 34; the tire-scraping arm support frame 47 of the tire-scraping arm assembly 37 is hinged to the trolley 35 through a tire-scraping arm pin 39, and the tire-scraping arm support frame 47 rotates up and down along the tire-scraping arm pin 39; the trolley 35 is provided with two upper and lower tire-scraping arm locking hooks 38 for providing upper and lower positioning for the tire-scraping arm assembly 37; the tire-scraping arm support frame 47 is provided with a tire-scraping arm 46 that can move horizontally and linearly, the tire-scraping arm 46 is provided with sliding support by the tire-scraping arm support frame 47, and the front end of the tire-scraping arm 46 is provided with a tire-scraping wheel 40.

[0017] As another preferred embodiment, the upper and lower tire-shoveling arm locking hooks 38 of the present invention are respectively hinged to the trolley 35 via locking plate pins 58. The tire-shoveling arm locking hooks 38 are provided with arc-shaped limiting grooves 71, and limiting screws 72 pass through the limiting grooves 71 and the limiting holes on the trolley 35. The lower end of the upper tire-shoveling arm locking hook 38 is provided with an arc-shaped protrusion 73, and the upper end of the lower tire-shoveling arm locking hook 38 is provided with an arc-shaped groove 74. The lower part of the tire-shoveling arm locking hook 38 and the upper part of the lower tire-shoveling arm locking hook 38 are connected by a tension spring 56, and the tire-shoveling arm locking hooks 38 are driven to rotate by a locking hook driving cylinder 59.

[0018] As another preferred embodiment, the rear end of the tire-shoveling arm 46 of the present invention is connected to and installed with a micro-motion cylinder 48. The piston rod of the micro-motion cylinder 48 passes through the center of the tire-shoveling arm 46 and is hinged to the movable support 42 through a connecting pin 44. The connecting pin 44 engages with the sliding groove 45.

[0019] The rear pivot of the tire wheel frame 41 is hinged to the movable support 42 and can rotate freely. The tire wheel frame pin 43 is inserted into the rear limit of the tire. The tire wheel 40 is installed on the tire wheel frame 41 through a bearing connection.

[0020] Secondly, the piston body 67 of the micro-motion cylinder 48 described in this invention is fixed to the tire-shoveling arm support frame 47 by screws. The piston sealing ring 68 of the micro-motion cylinder 48 is installed on the piston body 67. The micro-motion cylinder cover 70 is concentrically slidably installed on the piston body 67. The micro-motion cylinder cover 70 is in contact with the cylinder locking plate 65. The cylinder locking plate 65 is installed on the tire-shoveling arm 46. The return spring plate 69 is pressed onto the tire-shoveling arm support frame 47 by screws. The return spring plate 69 presses the cylinder locking plate 65 to return the cylinder locking plate 65 to its original position. The tire-shoveling arm 46 slides along the tire-shoveling arm support frame 47.

[0021] In addition, the spring 61 and the pin 43 of the present invention are slidably mounted in the sleeve 62. The spring 61 passes through the pin 43. The front end of the spring 61 contacts the shaft 64 of the pin 43, and the rear end of the spring 61 contacts the sleeve 62. The sleeve 62 is threadedly fixed to the movable support 42. The rear end of the pin 43 is provided with a hand ball 63. The front end of the pin 43 is inserted into the hole of the tire wheel frame 41 to position the tire wheel frame 41.

[0022] The beneficial effects of this invention.

[0023] This invention, through the connection and combination of components such as the main trolley 12, the tilting device 14, and the hinged connecting rod 10, enables the installation of the tire changer B (the installation method is: the tire changer B is installed on the column 3, where rollers 7 engage with the cam groove 8, and there is a threaded hole connecting to the hinge shaft 9) and the mounting and dismounting of the service vehicle A; the horizontal rail 11 of the guide rail assembly 6 can be installed on the service vehicle A. In addition, the device of this invention is small in size, easy to install and use, and convenient to carry and install on vehicles.

[0024] This invention replaces the traditional bulky tire changer with a compact structure, making it more suitable for portable outdoor use. If equipped with a V-shaped logistics vehicle or box truck and an air compressor driven by a diesel or gasoline engine, the dream of mobile tire changer becomes a reality. It is also more suitable for online ordering of car tires and door-to-door service in the Internet+ era. When used in tire shops or 4S stations, it also indirectly saves space and venue. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.

[0026] Figure 1 This is a panoramic view of the implementation status of this invention.

[0027] Figure 2 This is a partial view of the present invention in operation.

[0028] Figure 3 This is an unfolded diagram of the vertical tire-removing structure of the rotating lifting swing arm type of the present invention.

[0029] Figure 4This is a working diagram of the vertical tire-removing structure of the present invention, which features a rotating lifting swing arm.

[0030] Figure 5 This is an exploded view of the vertical tire-removing structure of the rotating lifting swing arm type of the present invention.

[0031] Figure 6 This is a structural diagram of the assistant component of this invention.

[0032] Figure 7 This is the upper-level working diagram of the assistant of this invention.

[0033] Figure 8 This is a lower-level working diagram of the assistant component of this invention.

[0034] Figure 9 This is an exploded view of the tire-shoveling arm of the assistant component of this invention.

[0035] Figure 10 This is a diagram showing the storage and transportation status of the track system of this invention.

[0036] Figure 11 This is a top view of the deployed orbital system.

[0037] Figure 12 This is a side view of the deployed orbital system.

[0038] Figure 13 This is an exploded view of the tire-removing hook of the present invention.

[0039] Figure 14 This is a side view of the present invention.

[0040] Figures 15-18 This is a schematic diagram of the tire disassembly and assembly process of the present invention.

[0041] Figure 19 This is an exploded view of the relevant parts of the tire-shovel arm locking hook of the present invention.

[0042] Figure 20 This is a schematic diagram of the relevant parts of the tire-shovel arm locking hook of the present invention.

[0043] In the diagram, A is the service vehicle, B is the tire changer, C is the tire, 1 is the housing, 2 is the tire clamp, 3 is the column, 4 is the swing arm, 5 is the assistant, 6 is the guide rail assembly, 7 is the roller, 8 is the cam groove, 9 is the hinge shaft, 10 is the hinge link, 11 is the horizontal rail, 12 is the main trolley, 13 is the rear hinge seat, 14 is the tilting device, 15 is the front hinge seat, 16 is the tire changer mounting frame, 17 is the swing arm pivot, 18 is the swing arm roller, and 19 is the swing arm. 20. Arm roller shaft, 21. Cylinder connecting pin, 22. Swing arm bushing, 23. Column cam groove, 24. Piston rod, 25. Swing arm cylinder, 26. Push-pull arm, 27. Working arm, 28. Cylinder bracket, 29. Tire removal hook cylinder, 30. Tire removal hook piston rod, 31. Tire removal hook support body, 32. Lower connecting rod, 33. Working head, 34. Tire removal hook, 35. Sliding column, 36. Pulley, 37. Assistant cylinder, 38. Tire removal arm assembly, 39. Shovel 39. Tire arm locking hook; 40. Tire arm pin; 41. Tire arm wheel; 42. Tire arm wheel holder; 43. Movable support; 44. Tire arm wheel holder pin; 45. Connecting pin; 46. Sliding groove; 47. Tire arm; 48. Tire arm support frame; 49. Micro-motion cylinder; 50. Support shaft; 51. C-shaped groove; 52. First hook pin; 53. Second hook pin; 54. Hook slide; 55. Assistant locking hook; 56. Tension spring; 57. Assistant pivot; 5 8. Locking plate pin; 59. Unlocking cylinder; 60. Assistant lock hook cylinder; 61. Spring; 62. Sleeve; 63. Hand ball; 64. Shaft platform; 65. Cylinder locking plate; 66. Limiting cylinder; 67. Piston body; 68. Piston sealing ring; 69. Return spring plate; 70. Micro-motion cylinder cover; 71. Limiting groove; 72. Limiting screw; 73. Arc-shaped protrusion; 74. Arc-shaped groove; 75. Unlocking cylinder pin; 80. Unlocking cylinder control valve. Detailed Implementation

[0044] As shown in the figure, the present invention includes a guide rail assembly 6, on which a main trolley 12 is provided. The rear end of the main trolley 12 is hinged to the rear end of the tilting device 14, and the front end of the main trolley 12 is hinged to the lower end of the tire changer mounting frame 16. The upper end of the tire changer mounting frame 16 is hinged to the front end of the tilting device 14.

[0045] The upper end of the tire changer mounting frame 16 is provided with a cam groove 8, and the lower end of the tire changer mounting frame 16 is provided with a hinged connecting rod 10. The rear end of the hinged connecting rod 10 is hingedly connected to the front end of the main trolley 12.

[0046] Tire changer B engages with cam groove 8 via roller 7 on column 3. Column 3 is hinged to the front end of hinge link 10 via hinge shaft 9. Tire changer B is mounted on housing 1 and supported by housing 1. Rollers are provided at the lower end of housing 1.

[0047] The guide rail assembly 6 includes a horizontal rail 11, and a roller is provided on the main trolley 12. The roller is located in the C-shaped groove 50 of the horizontal rail 11.

[0048] A guide rail assembly 6 is an independent system mounted on vehicle A. It has a horizontal rail 11 fixed to vehicle A, on which a main trolley 12 is mounted and moves horizontally. A tire changer mounting bracket 16 is hinged to the main trolley 12. A tilting cylinder is hinged at one end to the main trolley 12 and at the other end to the tire changer mounting bracket 16. The tire changer mounting bracket 16 has a cam groove 8 and a hinged connecting rod 10 connected to the column 3 of the tire changer B. When landing, the tire changer B adjusts its relative height to vehicle A along the cam groove 8 and the hinged connecting rod 10; when tilting, the roller 7 fully engages with the bottom of the cam groove 8, supporting the tire changer B. The horizontal rail 11 is bolted to vehicle A.

[0049] The overturning device 14 adopts an overturning cylinder. The rear end of the main trolley 12 is provided with a rear hinge seat 13, which is hinged to the rear end of the overturning cylinder. The front end of the main trolley 12 is provided with a front hinge seat 15, which is hinged to the lower end of the tire changer mounting frame 16. The upper end of the tire changer mounting frame 16 is hinged to the front end of the overturning cylinder.

[0050] A limit cylinder 66 is installed on the rear hinge seat 13. The limit cylinder 66 locks the main trolley 12 at its two extreme forward and backward positions. The limit cylinder 66 is a single-acting cylinder with a spring. When air is supplied to the limit cylinder 66, the piston rod of the limit cylinder 66 retracts to unlock against the spring resistance. Locking holes are provided on the front and rear of the horizontal track 11 corresponding to the piston rods of the limit cylinder 66. When air supply is stopped, the piston rod of the limit cylinder 66 extends into the locking hole and automatically locks, providing a safety function during operation.

[0051] The tire changer B includes a tire clamping plate 2 and a column 3 for clamping tires. The tire clamping plate 2 is located at the upper front end of the housing 1, and the column 3 is rigidly connected to the rear end of the housing 1. A swing arm 4 and an assistant 5 are provided on the column 3.

[0052] The lower end of the swing arm 4 is provided with a swing arm pivot 17, which is installed inside the swing arm bushing 21 at the upper end of the column 3. A swing arm roller 18 is provided in the middle of the swing arm pivot 17, and a swing arm roller shaft 19 passes through the swing arm roller 18 and is connected to the swing arm pivot 17. The swing arm roller 18 meshes with the column cam groove 22 on the swing arm bushing 21. The swing arm cylinder 24 is installed inside the column 3 below the swing arm bushing 21. The lower end of the swing arm cylinder 24 is hinged to the column 3, and the piston rod 23 of the swing arm cylinder 24 is connected to the lower end of the swing arm pivot 17 through a pin 20. This mechanism facilitates driving the swing arm 4 to rotate (moving along the track of the cam groove 22 to achieve lifting and lowering) for both upward and downward movement.

[0053] The front end of the swing arm 4 is provided with a push-pull arm 25 that can move horizontally along the swing arm 4 (the swing arm 4 has a square hole, the push-pull arm 25 has a square shaft, and the square shaft fits into the square hole). The front end of the push-pull arm 25 is provided with a working arm 26 that can move vertically up and down on the push-pull arm 25 (the push-pull arm 25 has a hexagonal hole, the working arm 26 has a hexagonal shaft, and the hexagonal shaft fits into the hexagonal hole); the upper end of the working arm 26 is provided with a cylinder bracket 27, and the lower end of the working arm 26 is provided with a working head 32; the upper end of the tire removal hook cylinder 28 is connected to the cylinder bracket 27. 7. The tire removal hook piston rod 29 at the lower end of the tire removal hook cylinder 28 is hinged to the upper end of the tire removal hook 33 via the support shaft 49. The tire removal hook support body 30 is bolted to the working head 32. The tire removal hook 33 is installed inside the tire removal hook support body 30. A hook slide 53 is provided above the tire removal hook support body 30. The roller on the support shaft 49 meshes with the hook slide 53. The tire removal hook 33 is hinged to the lower connecting rod 31 via the first hook pin 51. The lower connecting rod 31 is hinged to the tire removal hook support body 30 via the second hook pin 52.

[0054] The movement trajectory of the tire removal hook 33 is controlled by the lower connecting rod 31 and the hook slide 53 to simulate the edge movement of the rim of tire C. When the piston rod 29 extends, the movement trajectory of the hook is controlled by the lower connecting rod 31 and the hook slide 53 to simulate the edge movement of the rim of tire C. The hook inserts downward between tire C and the rim, and the tire removal hook 33 hooks the tire bead of tire C. When the piston rod 29 retracts, the tire removal hook 33 moves upward to lift the tire bead of tire C onto the working head 32. Tire C is rotated by the tire clamp 2, and tire C is removed from the rim.

[0055] This invention relates to a tire changing device that uses a swing arm 4 to move horizontally and vertically to change tires of different sizes. The swing arm 4 is mounted on a column 3 and rotates and rises. The column 3 is supported by a low-profile housing 1, on which a tire clamp 2 is mounted. A multi-functional tire-scraping assistant 5 is mounted on the right side of the column 3. This design results in a small, lightweight, and compact tire changing machine that requires minimal space and is easily installed on vehicle A. The tire changing machine is mounted on a guide rail assembly 6. The guide rail assembly 6 allows the tire changing machine to be rotated 70 to 90 degrees, then it enters and is secured inside vehicle A via a horizontal rail 11, facilitating transport and movement. In use, the tire changing machine 8 is moved outside vehicle A via the horizontal rail 11, then rotated 70 to 90 degrees to the ground for tire changing.

[0056] A low-profile housing 1 (housing height less than 330mm) houses a motor and a reducer, with a tire clamp 2 mounted on the reducer. A column 3 is mounted on the upper rear of housing 1, and a swing arm 4 is positioned above the column 2 for lifting, rotating, and positioning. A horizontally movable push-pull arm 25 is mounted on the swing arm 4, and a vertically movable working arm 26 is mounted on the push-pull arm 25. A working head 32 is mounted on the working arm 26. The tire C stripping assembly is a multi-functional assistant 5, which is vertically mounted on the right side of the column 3. The assistant 5 is rotatable and includes a vertically movable tire-scraping arm support frame 47. The tire-scraping arm 46 on the tire-scraping arm support frame 47 can move horizontally and rotate vertically for positioning.

[0057] This invention relates to a rotary lifting swing arm tire changer assembly mounted on a column 3, which moves up, down, rotates, and positions itself along the column 3. When removing or installing a tire, it descends to its limit position and positions itself; after tire removal or installation, it rises and rotates to its limit position and positions itself again. The swing arm 4 has a horizontally moving push-pull arm 25 and a vertically moving working arm 26, on which an automatic tire changer is mounted. The tire changer using this rotary lifting swing arm structure is compact and saves space.

[0058] The assistant 5 is equipped with a sliding column 34, the upper end of which is hinged to the column 3, and the lower end of which is hinged to the housing 1. An assistant locking hook 55 is provided at the lower end of the housing 1 (the assistant locking hook 55 is hinged to the housing 1 and driven by the assistant locking hook cylinder 60). After the assistant 5 rotates, it is positioned in the working position (the assistant 5 rotates horizontally and is positioned by the assistant locking hook 55). A locking plate is provided at the lower end of the assistant 5 corresponding to the assistant locking hook 55. A trolley 35 and an assistant cylinder 36 that drives the trolley 35 to move vertically up and down along the sliding column 34 are provided on the sliding column 34. The tire-shoveling arm support frame 47 of the tire-shoveling arm assembly 37 is hinged to the trolley 35 through the tire-shoveling arm pin 39. The tire-shoveling arm support frame 47 rotates up and down along the tire-shoveling arm pin 39. The trolley 35 is equipped with two upper and lower tire-shoveling arm locking hooks 38 that provide upper and lower positioning for the tire-shoveling arm assembly 37.

[0059] The upper and lower tire-shovel arm locking hooks 38 and the trolley 35 are respectively hinged to each other by locking plate pins 58. The tire-shovel arm locking hooks 38 are provided with arc-shaped limiting grooves 71, and limiting screws 72 pass through the limiting grooves 71 and the limiting holes on the trolley 35. The lower end of the upper tire-shovel arm locking hook 38 is provided with an arc-shaped protrusion 73, and the upper end of the lower tire-shovel arm locking hook 38 is provided with an arc-shaped groove 74. The arc-shaped protrusion 73 and the arc-shaped groove 74 are tangential and linked. The position of the tire-shovel arm locking hook 38 is controlled by the limiting groove 71 and the limiting screw 72. The lower part of the upper tire-shovel arm locking hook 38 and the upper part of the lower tire-shovel arm locking hook 38 are connected by a tension spring 56, so that the locking hook is in the locked position. The tire-shovel arm locking hook 38 is hinged to the piston rod of the locking hook drive cylinder 59 through the unlocking cylinder pin 75. The rear cover of the locking hook drive cylinder 59 is hinged to the trolley 35 by a screw. When the unlocking cylinder control valve 80 is pressed, air enters the front chamber of the locking hook drive cylinder 59, the piston rod is retracted, and the unlocking cylinder pin 75 drives the upper and lower tire-shovel arm locking hooks 38 to rotate in linkage, overcoming the tension of the tension spring 56, and the locking hook is opened. When the unlocking cylinder control valve 80 is released, air is exhausted from the front chamber of the locking hook drive cylinder 59, and the tension spring 56 drives the upper and lower tire-shovel arm locking hooks 38 to rotate in linkage, so that the locking hook is in the locked position.

[0060] like Figure 7 , 8 As shown, the tire-shoveling arm assembly 37 changes its position up and down; the tire-shoveling arm support frame 47 is provided with a tire-shoveling arm 46 that can move horizontally and linearly. The tire-shoveling arm 46 is provided with sliding support by the tire-shoveling arm support frame 47, and the front end of the tire-shoveling arm 46 is provided with a tire-shoveling wheel 40.

[0061] The tension spring 56 simultaneously positions and tightens the upper and lower tire-shovel arm locking hooks 38, keeping them in a locked state. The piston rod of the locking hook drive cylinder 59 is hinged to the tire-shovel arm locking hook 38. When the piston rod of the locking hook drive cylinder 59 retracts, it pulls the upper and lower tire-shovel arm locking hooks 38 together, thus opening the tire-shovel arm locking hooks 38. The control valve 80 of the locking hook drive cylinder 59 can be located on the tire-shovel arm assembly 37.

[0062] The rear end of the tire-shoveling arm 46 is connected to a micro-motion cylinder 48. The piston rod of the micro-motion cylinder 48 passes through the center of the tire-shoveling arm 46 and is hinged to the movable support 42 through a connecting pin 44. The connecting pin 44 engages with a sliding groove 45 and moves slightly within the sliding groove 45.

[0063] The rear pivot of the tire wheel frame 41 is hinged to the movable support 42 and can rotate freely. The tire wheel frame pin 43 is inserted into the rear limit of the tire (the tire wheel frame 41 rotates 180 degrees up and down and is positioned by the pin); the tire wheel 40 is connected to the tire wheel frame 41 through the bearing and is supported by the tire arm 46 to make linear movement. It has the functions of micro-movement and flipping of the tire wheel 40.

[0064] Spring 61 and pin 43 slide in sleeve 62. Spring 61 passes through pin 43. The front end of spring 61 contacts the pin 43 shaft 64, and the rear end of spring 61 contacts sleeve 62. Sleeve 62 is threadedly fixed to movable support 42. A hand ball 63 is provided at the rear end of pin 43. The front end of pin 43 is inserted into the hole of tire wheel bracket 41 to position tire wheel bracket 41. Pull out pin 43 and tire wheel bracket 41 rotates 180 degrees and repositions.

[0065] A micro-actuator cylinder 48 is fixed to the tire-scraping arm 46. The piston body 67 of the micro-actuator cylinder 48 is fixed to the tire-scraping arm support frame 47 by screws. The piston sealing ring 68 of the micro-actuator cylinder 48 is installed on the piston body 67. The micro-actuator cylinder head 70 is concentrically slidably installed on the piston body 67. The micro-actuator cylinder head 70 contacts the cylinder locking plate 65, which is installed on the tire-scraping arm 46. The return spring plate 69 is pressed onto the tire-scraping arm support frame 47 by screws. The return spring plate 69 presses the cylinder locking plate 65 to return the cylinder locking plate 65 to its original position, and the tire-scraping arm 46 slides along the tire-scraping arm support frame 47. When the micro-actuator cylinder 48 is supplied with air, the micro-actuator cylinder head 70 is pushed out, pushing the cylinder locking plate 65 to tilt and lock the tire-scraping arm 46 in position. When the micro-motion cylinder 48 stops pumping air, the cylinder locking plate 65 is tilted and returns to its original position under the action of the return spring plate 69, and the tire-shoveling arm 46 can move linearly.

[0066] The tire-scraping system that separates the rim from the tire C uses a multi-functional assistant 5. The multi-functional assistant 5 is mounted on the right side of the column 3. The assistant 5 has a sliding column 34 that is hinged to the housing 1 and the column 3 via an assistant pivot 57. The sliding column 34 can rotate along the assistant pivot 57. A trolley 35 is mounted on the sliding column 34 and moves up and down via an assistant cylinder 36. The tire-scraping arm support frame 47 is hinged to the trolley 35. The tire-scraping arm 46 rotates up and down along the tire-scraping arm pin 39 and is positioned vertically by two upper and lower tire-scraping arm locking hooks 38. The tire-scraping arm 46 is equipped with a rotating tire-scraping wheel 40. The tire-scraping arm 46, mounted on the tire-scraping arm support frame 47, moves horizontally back and forth. The tire-scraping force acts directly on the tire C, resulting in a large tire-scraping force and a simple, compact structure.

[0067] The working process of the present invention will be described below with reference to the accompanying drawings.

[0068] After the mobile service vehicle A is parked smoothly, the tire changer B is moved horizontally outside the vehicle A via the main trolley 12. The tilting cylinder extends and tilts the tire changer mounting frame 16, causing the tire changer B to tilt and land. Under the action of the cam groove 8, the hinge shaft 9, and the hinge link 10, the tire changer B automatically and smoothly lands on the ground (see...). Figure 2 The control arm cylinder 24 extends, and the control arm 4 rises and rotates along the cam groove 8 to open, fixing the tire C onto the tire clamp 2 (see...). Figure 3The operating assistant cylinder 36 extends and retracts, causing the trolley 35 to rise and fall. The horizontal push and pull of the tire-scraping arm 46 brings the tire-scraping wheel 40 1mm to 3mm above the tire C-rim before fixing it (see...). Figure 7 The upper tire C is then peeled off. During operation, the micro-actuator 48 is manipulated to advance the tire-scraping wheel 40 by 20mm. After the upper tire C is peeled off, the tire-scraping arm locking hook 38 is opened and the sliding column 34 is rotated to flip the tire-scraping arm 46 under the tire C and lock it in place (see...). Figure 8 The lower layer of tire C is peeled off. Control the swing arm cylinder 24 to retract the swing arm 4, and lower and rotate the swing arm 4 back to its original position along the cam groove 8 (see...). Figure 4 Manually control the push-pull arm 25 and the working arm 26 to bring the working head 32 close to the rim of tire C by 1mm to 3mm. Control the tire removal hook cylinder 28 to extend, and the tire removal hook 33 extends along the hook slide 53 to simulate the rim edge trajectory and hook the tire C. Control the tire removal hook cylinder 28 to retract, and the tire removal hook 33 retracts along the hook slide 53 to simulate the rim edge trajectory, and the tire C is hooked onto the working head 32. Control the rotation of tire C through the tire clamp 2 to separate tire C from the rim. After tire C is removed and installed, return all parts to their original positions, retract the tilting cylinder, tilt the tire changer mounting frame 16 to tilt the tire changer B, and pull the main trolley 12 to retract the tire changer into vehicle A.

[0069] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. Mobile tyre changing machine for vehicles comprising a guide rail assembly (6), characterised in that A main trolley (12) is provided on a guide rail assembly (6). The rear end of the main trolley (12) is hinged to the rear end of a flipping device (14), and the front end of the main trolley (12) is hinged to the lower end of a tire changer mounting frame (16); the upper end of the tire changer mounting frame (16) is hinged to the front end of the flipping device (14). A cam groove (8) is provided at the upper end of the tire changer mounting frame (16), and a hinged connecting rod (10) is provided at the lower end of the tire changer mounting frame (16). The rear end of the hinged connecting rod (10) is hinged to the front end of the main trolley (12). The tire changer (B) is engaged with the cam groove (8) through a roller (7) on a column (3). The column (3) is hinged to the front end of the hinged connecting rod (10) through a hinge shaft (9). The tire changer (B) is arranged on a box body (1). The tire changer (B) includes a tire chuck (2) for clamping a tire C and a column (3). The tire chuck (2) is arranged at the front upper end of the box body (1). The column (3) is rigidly connected to the rear end of the box body (1). A swing arm (4) and an assistant (5) are provided on the column (3). A swing arm rotating shaft (17) is provided at the lower end of the swing arm (4). The swing arm rotating shaft (17) is installed in a swing arm bushing (21) at the upper end of the column (3). A swing arm roller (18) is provided in the middle of the swing arm rotating shaft (17). A swing arm roller shaft (19) passes through the swing arm roller (18) and is connected to the swing arm rotating shaft (17). The swing arm roller (18) is engaged with a column cam groove (22) on the swing arm bushing (21). A swing arm cylinder (24) is installed below the swing arm bushing (21) inside the column (3). The lower end of the swing arm cylinder (24) is hinged to the column (3). The piston rod (23) of the swing arm cylinder (24) is connected to the lower end of the swing arm rotating shaft (17) through a pin shaft (20).

2. The mobile tire changer as set forth in claim 1, wherein The guide rail assembly (6) includes a horizontal rail (11). Rollers are provided on the main trolley (12), and the rollers are arranged in a C-shaped groove (50) of the horizontal rail (11).

3. The mobile tire changer as set forth in claim 1, wherein The flipping device (14) uses a flipping cylinder. A rear hinge seat (13) is provided at the rear end of the main trolley (12). The rear hinge seat (13) is hinged to the rear end of the flipping cylinder; a front hinge seat (15) is provided at the front end of the main trolley (12). The front hinge seat (15) is hinged to the lower end of the tire changer mounting frame (16); the upper end of the tire changer mounting frame (16) is hinged to the front end of the flipping cylinder.

4. The mobile tire changer as set forth in claim 3, wherein A limit cylinder (66) is provided on the rear hinge seat (13). Lock holes are provided on the front and rear of the horizontal rail (11) corresponding to the piston rod of the limit cylinder (66).

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