Automatic tire changer for assembling vacuum tire of electric vehicle

Abstract

The utility model discloses an automatic tire changer for assembling a vacuum tire of an electric vehicle, which comprises a lifting mechanism and a slider-crank mechanism which are connected up and down, the slider-crank mechanism is provided with a rotating arm bearing assembly connected with the lifting mechanism, left and right rotating arms connected with the rotating arm bearing assembly, and left and right rotating pinch rollers arranged at the lower parts of the left and right rotating arms; the left and right connecting rods are connected with the rotating arms and the sliding blocks on the corresponding sides. The hub is placed on the hub positioning seat, the vacuum tire is placed on the hub, the left and right rotating pressing wheels press one end of the vacuum tire downwards, after the vacuum tire is pressed into a hub groove, the sliding block moves linearly, the left and right rotating arms are driven by the connecting rod to rotate forwards, and the left and right rotating pressing wheels move forwards to roll the vacuum tire, so that the tire is completely pressed into the hub groove. And after the left and right rotating pressing wheels are pressed back, tight and complete matching of the tire and the hub is completed. The device is simple and reasonable in structure, safe, reliable, convenient, fast, high in production efficiency and high in yield.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle assembly, in particular to assembly equipment for tire hubs of electric vehicles. Background Art

[0002] The existing manual electric vacuum tire changing machine on the market has defects such as complex structure, multiple operating steps, cumbersome process, low efficiency, unsafe operation and low product achievement rate. Utility Model Content

[0003] The technical problem solved by the utility model is how to improve the assembly efficiency of vacuum tires for electric vehicles.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatic tire changing machine for assembling vacuum tires of electric vehicles, comprising a frame, a lifting mechanism installed on the frame, a crank slider mechanism connected to the lifting mechanism, and a wheel hub positioning seat arranged below the crank slider mechanism. The crank slider mechanism comprises a rotating arm bearing assembly connected to the lifting mechanism, a left rotating arm and a right rotating arm connected to the rotating arm bearing assembly, a left rotating pressure wheel arranged at the bottom of the left rotating arm, and a right rotating pressure wheel arranged at the bottom of the right rotating arm. The left connecting rod connects the left rotating arm and the slider, and the right connecting rod connects the right rotating arm and the slider.

[0005] The wheel is placed in the hub alignment seat, the vacuum tire is placed on it, and the lifting mechanism descends. The left and right rotating pressure rollers press one end of the vacuum tire, pressing it into the hub groove and holding it there for 0.5 seconds. Driven by the power unit, the slider moves linearly, driving the left and right rotating arms forward via the left and right connecting rods. The left and right rotating pressure rollers move forward, rolling the vacuum tire until it is fully seated in the hub groove and holding it there for 0.5 seconds. The program then runs in the opposite direction, with the slider moving in the opposite direction. The left and right rotating arms rotate backward via the left and right connecting rods. The left and right rotating pressure rollers also rotate backward, rolling the tire and smoothing out any uneven insertion. After the pressure is released, the tire and wheel are tightly and completely fitted, and the tire is evenly and flatly positioned on the inner hub groove. The lifting mechanism then returns upward, and the slider-crank mechanism drives the left and right rotating arms backward to return to their original position.

[0006] The rotating arm bearing assembly includes a central shaft and bearings. The central shaft is fixedly connected to the lifting mechanism, and the left and right rotating arms are connected to the bearings. The left rotating arm is connected to one bearing on the central shaft, and the right rotating arm is connected to the other bearing on the central shaft. This allows the left and right rotating arms to rotate backward and forward simultaneously under the drive of the crank slider mechanism.

[0007] The lifting mechanism consists of an upper vertical cylinder and a lower horizontal cylinder base. The piston rod of the upper vertical cylinder is fixedly connected to the upper platform of the inverted L-shaped base, which is an integral part of the frame. The cylinder body of the upper vertical cylinder is fixedly connected to several guide posts. The guide posts extend downward through the upper platform of the inverted L-shaped base and are fixedly connected to the lower horizontal cylinder base. The rotating arm bearing assembly is connected to the lower horizontal cylinder base. When the piston rod of the upper vertical cylinder extends, the cylinder body rises, the guide posts rise, and the lower horizontal cylinder base rises, driving the slider-crank mechanism to rise. When the piston rod of the upper vertical cylinder retracts, the cylinder body descends, the guide posts descend, and the lower horizontal cylinder base descends, driving the slider-crank mechanism to descend.

[0008] The slider is mounted on a horizontal linear guide rail, which is fixedly connected to the lower horizontal cylinder base via a connecting block. The lower horizontal cylinder base is mounted on the lower horizontal cylinder and connected to the slider. The lower horizontal cylinder is the power unit that drives the slider's linear displacement along the horizontal linear guide rail.

[0009] The horizontal linear guide rail is fixedly connected to a vertical motion dual bearing, which clamps the side wall of the base vertical arm, which is an integral part of the frame. The vertical motion dual bearing rises and falls along the side wall of the base vertical wall to guide the rise and fall of the crank slider mechanism.

[0010] The wheel hub locator is mounted on the base of the frame, and a tire stopper is installed on the base. The tire stopper is located next to the wheel hub locator. When the wheel hub is placed on the wheel hub locator and the vacuum tire is placed on the wheel hub, the vacuum tire must be close to the tire stopper. The tire stopper plays a role in positioning and limiting the vacuum tire.

[0011] The upper vertical cylinder and lower horizontal cylinder are controlled by a PLC system, and the base of the frame is equipped with a dual-start switch for the PLC system. For production safety, the tire changer is activated by pressing two buttons with both hands at the same time to prevent accidental injuries.

[0012] The tire changing machine of the present invention has a simple and reasonable structure, an electrically controlled mechanical movement mode, is safe and reliable, and can assemble a single wheel set in less than 15 seconds (the traditional manual assembly time for a single wheel set is up to 90 seconds). It is convenient and fast, with high production efficiency, a 100% achievement rate, and a high yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings:

[0014] Figure 1 Schematic diagram of assembling an automatic tire changer for an electric vehicle tubeless tire;

[0015] Figure 2 The left side shows a schematic diagram of an electric vehicle vacuum tire equipped with an automatic tire changing machine;

[0016] Figure 3 The diagram on the right shows an automatic tire changing machine for an electric vehicle equipped with a vacuum tire.

[0017] Figure 4 Exploded view of an automatic tire changer for an electric vehicle with vacuum tires;

[0018] Figure 5 A schematic diagram of the rack;

[0019] Figure 6 is a schematic diagram of the slider crank mechanism;

[0020] Figure 7 It is a standby schematic diagram of the slider-crank mechanism;

[0021] Figure 8 It is the working diagram of the crank slider mechanism;

[0022] Figure 9 Workflow diagram for assembling an automatic tire changer for electric vehicle tubeless tires;

[0023] Figure 10 It is a schematic diagram of the PLC system;

[0024] Figure 11 This is a power supply schematic.

[0025] Explanation of symbols in the figure:

[0026] 10. Upper vertical cylinder; 11. Upper vertical cylinder seat; 12. Guide column; 13. Piston rod; 14. Piston rod fixing flange; 15. Guide column linear bearing;

[0027] 20. Lower horizontal cylinder; 21. Lower horizontal cylinder seat;

[0028] 31. Horizontal linear guide rail; 32. Slider; 33. Vertical motion double bearing; 34. Right connecting rod; 35. Left connecting rod; 36. Right rotating arm; 37. Left rotating arm; 38. Right rotating pressure wheel; 39. Left rotating pressure wheel; 40. Rotating arm bearing assembly;

[0029] 41. Base vertical arm; 42. Base; 43. Tire stopper; 44. Wheel hub positioning seat; 45. Inverted L-shaped base upper platform;

[0030] 50. Power supply and PLC system control box; 51. First start switch; 52. Second start switch;

[0031] 60. Wheel hub; 61. Vacuum tire; 62. Wheel set after vacuum tire and wheel hub are assembled. DETAILED DESCRIPTION

[0032] like Figure 4 、 Figure 6The automatic tire changing machine for assembling vacuum tires of electric vehicles includes a frame, a lifting mechanism installed on the frame, a crank slider mechanism connected to the lifting mechanism, and a wheel hub positioning seat 44 arranged below the crank slider mechanism. The crank slider mechanism includes a rotating arm bearing assembly 40 connected to the lifting mechanism, a left rotating arm 37 and a right rotating arm 36 connected to the rotating arm bearing assembly, a left rotating pressure wheel 39 arranged at the lower part of the left rotating arm, and a right rotating pressure wheel 38 arranged at the lower part of the right rotating arm. The left connecting rod 35 connects the left rotating arm and the slider 32, and the right connecting rod 34 connects the right rotating arm and the slider.

[0033] The rotating arm bearing assembly 40 includes a central shaft and bearings. The central shaft is fixedly connected to the lifting mechanism, and the left rotating arm 37 and the right rotating arm 36 are connected to the bearings. The left rotating arm 37 is connected to one bearing on the central shaft, and the right rotating arm 36 is connected to the other bearing on the central shaft. In this way, under the drive of the crank slider mechanism, the left and right rotating arms can rotate backward / forward simultaneously.

[0034] like Figure 4 、 Figure 5 The lifting mechanism includes an upper vertical cylinder 10 and a lower horizontal cylinder base 21. The piston rod 13 of the upper vertical cylinder is fixedly connected to the upper platform 45 of the inverted L-shaped base, which is a component of the frame. The cylinder body of the upper vertical cylinder is fixedly connected to a plurality of guide columns 12. The guide columns pass downward through the upper platform of the inverted L-shaped base and are fixedly connected to the lower horizontal cylinder base 21. The rotating arm bearing assembly 40 is connected to the lower horizontal cylinder base. When the piston rod 13 of the upper vertical cylinder 10 extends, the cylinder body rises, the guide columns 12 rise, and the lower horizontal cylinder base 21 rises, driving the crank slider mechanism to rise. When the piston rod 13 of the upper vertical cylinder 10 retracts, the cylinder body descends, the guide columns 12 descend, and the lower horizontal cylinder base 21 descends, driving the crank slider mechanism to descend. The upper vertical cylinder 10 is mounted on the upper vertical cylinder base 11, which is connected to the guide columns 12. The piston rod 13 is fixedly connected to the inverted L-shaped base upper platform 45 via the piston rod fixing flange 14. The inverted L-shaped base upper platform 45 is provided with a guide column linear bearing 15, in which the guide column 12 fits. The inverted L-shaped base upper platform 45 is mounted on the base vertical arm 41.

[0035] like Figure 4 、 Figure 6 The slider 32 is fitted on the horizontal linear guide rail 31, and the horizontal linear guide rail is fixedly connected to the lower horizontal cylinder seat 21 through a connecting block. The lower horizontal cylinder 20 is installed on the lower horizontal cylinder seat, and the lower horizontal cylinder is connected to the slider.

[0036] The horizontal linear guide rail 31 is fixedly connected to a vertical motion double bearing 33, which clamps the side wall of the base vertical arm 41. The base vertical arm is an integral part of the frame, and the base vertical arm 41 is installed on the base 42 of the frame.

[0037] like Figure 4 、 Figure 5 The wheel hub positioning seat 44 is arranged on the base 42 of the frame, and a tire stopper 43 is provided on the base, and the tire stopper is located beside the wheel hub positioning seat.

[0038] like Figure 4 、 Figure 5 、 Figure 10 The upper vertical cylinder 10 and lower horizontal cylinder 20 are controlled by a PLC system. The frame's base 42 is equipped with dual start switches for the PLC system. A power supply and PLC system control box 50 are mounted on the base's vertical arm 41. These dual start switches include a first start switch 51 on the left side of the base 42 and a second start switch 52 on the right side. The second start switch is also equipped with an emergency stop switch.

[0039] refer to Figure 9 The present invention automatically completes the entire assembly process in the order in which the tires are installed, with manual assistance and one-touch start. First, turn on the device power and wait for the device to be ready. Place the wheel hub 60 on the wheel hub positioning seat 44 and place the vacuum tire 61 on the wheel hub 60. The vacuum tire must be close to the tire stopper 43. Simultaneously press the first start switch 51 and the second start switch 52 on the left and right sides of the base 42. The PLC program starts running, the upper vertical cylinder 10 presses down, and the left-rotating pressure wheel 39 and the right-rotating pressure wheel 38 press one end of the vacuum tire, pressing it into the wheel hub groove and holding it for 0.5 seconds. Then, the lower horizontal cylinder 20 contracts, driving the left connecting rod 35 and the right connecting rod 34 to move, causing the left rotating arm 37 and the right rotating arm 36 to rotate forward. The left-rotating pressure wheel 39 and the right-rotating pressure wheel 38 move forward to roll the vacuum tire, so that the vacuum tire 61 is completely pressed into the wheel hub groove and held for 0.5 seconds. The subsequent program runs in the opposite direction. The lower horizontal cylinder 20 is pushed out, pushing the slider 32. The slider drives the left connecting rod 35 and the right connecting rod 34 to move, driving the left rotating arm 37 and the right rotating arm 36, as well as the left rotating pressure wheel 39 and the right rotating pressure wheel 38 to rotate backward to roll the vacuum tire, correcting the unevenness of the vacuum tire 61 after pressing. After the pressure is returned, the vacuum tire and the wheel hub 60 are tightly and completely matched, and the vacuum tire is evenly and flatly positioned in the wheel hub groove. After the upper vertical cylinder 10 moves upward and resets, the lower horizontal cylinder 20 is pushed out and resets backward, driving the left connecting rod 35 and the right connecting rod 34, as well as the left rotating arm 37 and the right rotating arm 36, and the left rotating pressure wheel 39 and the right rotating pressure wheel 38 to move and reset.

[0040] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation method and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. An automatic tire changing machine for assembling vacuum tires for electric vehicles, comprising a frame, a lifting mechanism mounted on the frame, a crank slider mechanism connected to the lifting mechanism, and a wheel hub positioning seat (44) disposed below the crank slider mechanism, characterized in that: The crank slider mechanism comprises a rotating arm bearing assembly (40) connected to the lifting mechanism, a left rotating arm (37) and a right rotating arm (36) connected to the rotating arm bearing assembly, a left rotating pressure wheel (39) arranged at the lower part of the left rotating arm, a right rotating pressure wheel (38) arranged at the lower part of the right rotating arm, a left connecting rod (35) connecting the left rotating arm and the slider (32), and a right connecting rod (34) connecting the right rotating arm and the slider.

2. The automatic tire changing machine for vacuum tire assembly of electric vehicles according to claim 1, characterized in that: The rotating arm bearing assembly (40) comprises a central shaft and a bearing, wherein the central shaft is fixedly connected to the lifting mechanism, and the left rotating arm (37) and the right rotating arm (36) are connected to the bearing.

3. The automatic tire changing machine for vacuum tire assembly of electric vehicles according to claim 1 or 2, characterized in that: The lifting mechanism comprises an upper vertical cylinder (10) and a lower horizontal cylinder seat (21); a piston rod (13) of the upper vertical cylinder is fixedly connected to an upper platform (45) of an inverted L-shaped base; the upper platform of the inverted L-shaped base is a component of a frame; a cylinder body of the upper vertical cylinder is fixedly connected to a plurality of guide columns (12); the guide columns pass downward through the upper platform of the inverted L-shaped base and are fixedly connected to the lower horizontal cylinder seat (21); and a rotating arm bearing assembly (40) is connected to the lower horizontal cylinder seat.

4. The automatic tire changing machine for vacuum tire assembly of electric vehicles according to claim 3, characterized in that: The slider (32) is fitted on a horizontal linear guide rail (31), which is fixedly connected to the lower horizontal cylinder seat (21) via a connecting block. A lower horizontal cylinder (20) is mounted on the lower horizontal cylinder seat, and the lower horizontal cylinder is connected to the slider.

5. The automatic tire changing machine for vacuum tire assembly of electric vehicles according to claim 4, characterized in that: The horizontal linear guide rail (31) is fixedly connected with a vertical motion double bearing (33), and the vertical motion double bearing clamps the side wall of the base vertical arm (41), and the base vertical arm is an integral part of the frame.

6. The automatic tire changing machine for vacuum tire assembly of electric vehicles according to claim 1, characterized in that: The wheel hub positioning seat (44) is arranged on the base (42) of the frame. The base is provided with a tire stopper (43), and the tire stopper is located beside the wheel hub positioning seat.

7. The automatic tire changing machine for vacuum tire assembly of electric vehicles according to claim 4, characterized in that: The actions of the upper vertical cylinder (10) and the lower horizontal cylinder (20) are controlled by a PLC system, and a double start switch of the PLC system is provided on the base (42) of the frame.

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