Tire dismounting device

Abstract

The utility model relates to the technical field of tire dismounting and mounting equipment, in particular to a tire dismounting device which comprises a rotating table, a first tire pressing wheel, a second tire pressing wheel and a tire hooking device, the rotating table is used for supporting and driving a tire to rotate; when a tire is placed on the rotating table, the first tire pressing wheel and the second tire pressing wheel are located on the two sides of the tire correspondingly, so that a tire body of the tire is separated from a rim through pressure application. The tire hooking device is used for lifting the tire body separated from the rim; and at least one of the first tire pressing wheel and the second tire pressing wheel is provided with a nozzle capable of spraying liquid between the tire body and the rim. When the first tire pressing wheel presses the tire body of the tire, the nozzles on the first tire pressing wheel can spray liquid to the position between the tire body and the rim so as to assist the first tire pressing wheel to separate the tire body from the rim, similarly, when the second tire pressing wheel presses the tire body of the tire, the nozzles on the second tire pressing wheel can spray liquid to the position between the tire body and the rim so as to assist the first tire pressing wheel to separate the tire body from the rim. And then the second tire pressing wheel is assisted to separate the tire body from the rim.

Description

Technical Field

[0001] This utility model relates to the field of tire removal and installation equipment technology, specifically, to a tire removal device. Background Technology

[0002] Tires are one of the most important components of various land vehicles. They directly bear the weight of the vehicle and provide the friction needed for movement through contact with the ground. Given their working environment, tires are also one of the main consumables for automobiles. The rims supporting the tires are generally made of metal, possessing high strength, durability, and a longer lifespan than the tires themselves. This makes tire replacement a frequent part of routine maintenance for automobiles. Considering the current number of land vehicles in operation, tire replacement is a very heavy and time-consuming task. Existing technologies offer various tire changers or tire-changing machines to assist workers in improving tire-changing efficiency and reducing manual labor intensity.

[0003] There are two common types of tires: regular tires, which include an inner tube and an outer tube, and tubeless tires, also known as tubeless tires. Tubeless tires have the tire carcass in direct contact with the rim, providing good heat dissipation. The surface of a tubeless tire is made of high-quality rubber, which increases surface tension after inflation, creating pressure on the inner surface and improving its self-sealing ability against punctures. Once punctured, unlike regular tires where all the air leaks out instantly, the air will continue to leak for a certain period of time, ensuring safety during high-speed driving.

[0004] Tubeless tire sealing relies on the outer edge of the tire fitting tightly against the inner edge of the rim, using the air pressure inside the tire to create a close seal. The tire bead is the part that contacts the rim, containing a high-strength triangular rubber and steel wire ring structure. After the tire pressure inflates the tire, the bead adheres tightly to the rim, preventing air pressure from leaking through gaps and firmly securing the tire to the rim. Since the sealing performance of a tire, especially a tubeless tire, is closely related to the bead's fit, damage to the bead will severely affect the tire's sealing performance.

[0005] In tire repair work, the step of separating the tire bead from the rim is called tire loosening. Current technology typically involves first controlling the tire to rotate, then using a tire pressure roller to press the tire to create a gap between the tire sidewall edge and the rim edge. Then, a pry bar is used manually to forcefully impact the joint between the tire bead and the rim to loosen the tire, or a separate pry bar is used alone for impact separation. However, when pressing a rotating tire with a tire pressure roller, it is often necessary to spray liquid, such as water or lubricant, between the tire bead and the rim; manual spraying is time-consuming and labor-intensive. Utility Model Content

[0006] In view of the above-mentioned problems existing in the prior art, the present invention provides a tire-changing device.

[0007] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0008] A tire-removing device includes a rotary table, a first tire pressure wheel, a second tire pressure wheel, and a tire hooker;

[0009] The rotary table is used to support and drive the tire to rotate;

[0010] When the tire is placed on the rotating platform, the first pressure roller and the second pressure roller are respectively located on the upper and lower sides of the tire, so that the tire body is separated from the rim by applying pressure;

[0011] The tire hook is used to lift the tire body that is separated from the rim;

[0012] At least one of the first pressure roller and the second pressure roller is provided with a nozzle capable of spraying liquid between the tire body and the rim, and the nozzle is connected to an external liquid supply device.

[0013] Preferably, the rotary table, the first tire pressure roller, the second tire pressure roller, and the tire hook are all mounted on a mounting base.

[0014] Preferably, the mounting base is provided with a rotation and lifting mechanism, and the rotating platform is mounted on the mounting base through the rotation and lifting mechanism.

[0015] Preferably, the device also includes a pressing device that can be fixedly connected to the rotary table, the pressing device being able to press the tire onto the rotary table.

[0016] Preferably, the rotating platform is provided with a fixing hole; the clamping device includes a fixing rod and a pressure plate, the pressure plate is disposed at one end of the fixing rod, and the other end of the fixing rod can extend into and be locked in the fixing hole.

[0017] Preferably, when the tire is placed on the rotating platform, the tire hook can move along the axial and / or radial direction of the tire.

[0018] Preferably, the bottom of the mounting base is provided with a lifting cylinder and a placement frame, and the lifting cylinder is connected to the placement frame via a connecting rod;

[0019] When the tire is placed on the placement rack, the lifting cylinder can drive the placement rack to lift the tire to the rotary table.

[0020] Preferably, the mounting base is also provided with an auxiliary robotic arm, which is capable of pressing the tire body.

[0021] Preferably, the auxiliary manipulator includes at least one rotating rod rotatably connected to the mounting base, and a pressure block is connected to the rotating rod via an electric telescopic rod.

[0022] This utility model has at least the following beneficial effects:

[0023] 1. When the first pressure wheel presses the tire carcass, the nozzle on the first pressure wheel can spray liquid between the tire carcass and the rim, thereby assisting the first pressure wheel in separating the tire carcass from the rim. Similarly, when the second pressure wheel presses the tire carcass, the nozzle on the second pressure wheel can spray liquid between the tire carcass and the rim, thereby assisting the second pressure wheel in separating the tire carcass from the rim.

[0024] 2. The nozzle on the first pressure roller sprays liquid parallel to the first pressure roller, so that when the tire rotates with the rotary table, the liquid sprayed from the nozzle can act on the first pressure roller, thereby assisting the work of the first pressure roller; similarly, the nozzle on the second pressure roller sprays liquid parallel to the second pressure roller, so that when the tire rotates with the rotary table, the liquid sprayed from the nozzle can act on the second pressure roller, thereby assisting the work of the second pressure roller. Attached Figure Description

[0025] Figure 1 A first schematic diagram of the tire-changing device in some embodiments of this application is shown;

[0026] Figure 2 It shows Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 A second schematic diagram of the tire-changing device in some embodiments of this application is shown;

[0028] Figure 4 A schematic diagram of the tire-changing device with the clamping device omitted is shown in some embodiments of this application;

[0029] Figure 5 A schematic diagram of the clamping device in some embodiments of this application is shown.

[0030] The names of the parts referred to by the numbers in the attached diagram are as follows:

[0031] 10. Nozzle; 20. Mounting base; 21. Lifting cylinder; 22. Placement rack; 23. Connecting rod; 100. Rotary table; 110. Telescopic cylinder; 120. Fixing hole; 200. First tire pressing roller; 300. Second tire pressing roller; 400. Pressing device; 410. Fixing rod; 420. Pressure plate; 500. Tire hook; 510. Guide rail; 520. Drive motor; 530. Telescopic rod; 600. Auxiliary manipulator; 610. First rotating rod; 620. Second rotating rod; 630. Electric telescopic rod; 640. Pressure block. Detailed Implementation

[0032] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0033] like Figures 1-5 As shown, this embodiment provides a tire-removing device, which includes a rotating platform 100 that can support the tire. The rotating platform 100 can drive the tire placed on it to rotate, so that the tire can rotate in the circumferential direction. It also includes a first pressure roller 200 and a second pressure roller 300. When the tire is placed on the rotating platform 100, the first pressure roller 200 and the second pressure roller 300 can be located on the upper and lower sides of the tire, respectively. The first pressure roller 200 can apply pressure to the tire body from above the tire, while the second pressure roller 300 can apply pressure to the tire body from below the tire. Thus, under the pressing action of the first pressure roller 200 and / or the second pressure roller 300, the tire body is separated from the tire rim.

[0034] Furthermore, nozzles 10 are provided on the first pressure roller 200 and / or the second pressure roller 300. The nozzles 10 are connected to an external liquid supply device (not shown in the figure) through pipes. In this embodiment, nozzles 10 are provided on both the first pressure roller 200 and the second pressure roller 300. When the first pressure roller 200 presses the tire carcass, the nozzles 10 on the first pressure roller 200 can spray liquid between the tire carcass and the rim, thereby assisting the first pressure roller 200 in separating the tire carcass from the rim. Similarly, when the second pressure roller 300 presses the tire carcass, the nozzles 10 on the second pressure roller 300 can spray liquid between the tire carcass and the rim, thereby assisting the second pressure roller 300 in separating the tire carcass from the rim.

[0035] Preferably, the nozzle 10 on the first pressure roller 200 sprays in a direction parallel to the first pressure roller 200, so that when the tire rotates with the rotary table 100, the liquid sprayed from the nozzle 10 can act on the first pressure roller 200, thereby assisting the operation of the first pressure roller 200; similarly, the nozzle 10 on the second pressure roller 300 sprays in a direction parallel to the second pressure roller 300, so that when the tire rotates with the rotary table 100, the liquid sprayed from the nozzle 10 can act on the second pressure roller 300, thereby assisting the operation of the second pressure roller 300.

[0036] It is understandable that external liquid supply equipment can provide water, lubricant, or other liquids to nozzle 10 as needed, and there are no special limitations on this.

[0037] In some embodiments, the tire changing device includes a mounting base 20, wherein the rotary table 100, the first tire pressure roller 200, and the second tire pressure roller 300 are all disposed on the mounting base 20. By integrating the rotary table 100, the first tire pressure roller 200, and the second tire pressure roller 300 onto a single mounting base 20, the overall transportation and use of the tire changing device can be facilitated.

[0038] In some embodiments, a rotary lifting mechanism is provided on the mounting base 20, wherein the rotary table 100 is disposed on the rotary lifting mechanism, such that the rotary table 100 is indirectly disposed on the mounting base 20 through the rotary lifting mechanism.

[0039] Furthermore, the rotary lifting mechanism may include a rotary motor (not shown in the figure) and a telescopic cylinder 110. The rotary motor is mounted on the mounting base 20, and the telescopic cylinder 110 is mounted on the output shaft of the rotary motor, so that the rotary motor can drive the telescopic cylinder 110 to rotate circumferentially. The rotary table 100 is mounted on the output shaft of the telescopic cylinder 110, so that the telescopic cylinder 110 can drive the rotary table 100 to lift and lower. The rotary motor can drive the rotary table 100 to rotate circumferentially. Therefore, when the tire is placed on the rotary table 100, the rotary table 100 can not only drive the tire to rotate circumferentially, but also drive the tire to lift and lower in the height direction, which facilitates the adjustment of the tire position, so as to separate the tire body from the rim through the first pressure roller 200 and the second pressure roller 300.

[0040] In some embodiments, the tire-removing device further includes a pressing device 400. After the tire is placed on the rotary table 100, the pressing device 400 is then fixedly installed on the rotary table 100, so that the pressing device 400 can press the tire onto the rotary table 100, thereby fixing the tire on the rotary table 100 and further improving the stability of the rotary table 100 driving the tire to rotate.

[0041] In some embodiments, a fixing hole 120 is provided on the rotary table 100. The clamping device 400 includes a fixing rod 410 and a pressure plate 420, wherein the pressure plate 420 is disposed on one end of the fixing rod 410, and the other end of the fixing rod 410 can extend into the fixing hole 120 and be locked in the fixing hole 120.

[0042] More specifically, since the tire has a through hole in the middle, when the tire is placed on the rotary table 100, the through hole of the tire is aligned with the fixing hole 120. Then, the other end of the fixing rod 410 of the pressing device 400 is inserted and locked in the fixing hole 120. In this state, the pressure plate 420 on one end of the fixing rod 410 can be pressed tightly on the rim of the tire, thereby fixing the tire on the rotary table 100, so that the rotary table 100 can stably drive the tire to rotate in the circumferential direction.

[0043] In some embodiments, a tire hook 500 is also provided on the mounting base 20. After the first tire pressure roller 200 or the second tire pressure roller 300 separates part of the tire body from the rim, the worker can use the tire hook 500 to lift the separated tire body to maintain the separation of the tire body from the rim. Then, the tire is rotated by the turntable 100 to achieve the separation of the entire tire body from the rim.

[0044] In some embodiments, the tire hook 500 is movably mounted on the mounting base 20 through the cooperation of the guide rail 510, the drive motor 520, and the telescopic rod 530. Specifically, after the tire is fixed on the rotary table 100, the tire hook 500 can move along the axial or radial direction of the tire to adjust the relative position between the tire hook 500 and the tire, so as to facilitate the lifting of the tire by the tire hook 500.

[0045] In some embodiments, a lifting cylinder 21 and a placement frame 22 are provided on one side of the bottom of the mounting base 20, wherein the placement frame 22 is connected to the output end of the lifting cylinder 21 via a connecting rod 23.

[0046] Since the rotating platform 100 has a certain height, when a tire needs to be placed on the rotating platform 100, the tire is first moved to the placement rack 22, and then the lifting cylinder 21 is activated, so that the lifting cylinder 21 can lift the tire through the connecting rod 23 and the placement rack 22, thereby raising the tire to the same height as the rotating platform 100, which makes it easier to move the tire onto the rotating platform 100. Similarly, when a tire needs to be removed, the placement rack 22 is first adjusted to the same height as the rotating platform 100 by the lifting cylinder 21, and then the tire is moved to the placement rack 22. After that, the lifting cylinder 21 is controlled to drive the placement rack 22 to slowly fall.

[0047] In some embodiments, an auxiliary manipulator 600 is also provided on the mounting base 20. After the first pressure roller 200 or the second pressure roller 300 separates part of the tire body from the rim, the auxiliary manipulator 600 can cooperate to press the tire body to maintain the stability of the tire body and the rim in a separated state, so as to facilitate the separation of the entire tire body from the rim.

[0048] In some embodiments, the auxiliary manipulator 600 includes a first rotating rod 610 and a second rotating rod 620 that are rotatably connected as one unit. The end of the first rotating rod 610 away from the second rotating rod 620 is rotatably connected to the mounting base 20, and a pressure block 640 is connected to the end of the second rotating rod 620 away from the first rotating rod 610 via an electric telescopic rod 630.

[0049] When the first pressure roller 200 presses down on the tire body to separate part of the tire body from the rim, the operator can move the pressure block 640 above the tire body by rotating the first rotating rod 610 and the second rotating rod 620, and then drive the pressure block 640 to press down on the tire body by the electric telescopic rod 630, thereby realizing the auxiliary pressing of the tire body by the auxiliary robot 600, which facilitates the separation of the entire tire body from the rim.

[0050] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A tire dismounting apparatus characterized by: The device comprises a rotating table, a first tire pressing wheel, a second tire pressing wheel and a tire hooking device. The rotating table is used to support and drive the tire to rotate. The first tire pressing wheel and the second tire pressing wheel are respectively arranged on the upper and lower sides of the tire to separate the tire body from the rim by pressing when the tire is placed on the rotating table. The tire hooking device is used to lift and pull the tire body separated from the rim. At least one of the first tire pressing wheel and the second tire pressing wheel is provided with a nozzle capable of spraying liquid between the tire body and the rim, and the nozzle is connected with an external liquid supply device.

2. The tire changer according to claim 1, characterized in that: The rotating table, the first tire pressing wheel, the second tire pressing wheel and the tire hooking device are arranged on a mounting base.

3. The tire changer according to claim 2, characterized in that: The mounting base is provided with a rotating lifting mechanism, and the rotating table is arranged on the mounting base through the rotating lifting mechanism.

4. The tire changer according to claim 3, characterized in that: The device further comprises a pressing device capable of being fixedly connected with the rotating table, and the pressing device can press the tire on the rotating table.

5. The tire changer according to claim 4, characterized in that: The rotating table is provided with a fixing hole, the pressing device comprises a fixing rod and a pressing plate, the pressing plate is arranged at one end of the fixing rod, and the other end of the fixing rod can be inserted into and clamped and fixed in the fixing hole.

6. The tire changer according to claim 1, characterized in that: When the tire is placed on the rotating table, the tire hooking device can move in the axial and / or radial direction of the tire.

7. The tire changer according to claim 2, characterized in that: The bottom of the mounting base is provided with a lifting cylinder and a placing rack, and the lifting cylinder is connected with the placing rack through a connecting rod. When the tire is placed on the placing rack, the lifting cylinder can drive the placing rack to lift the tire to the rotating table.

8. The tire changer according to claim 2, wherein: The mounting base is further provided with an auxiliary mechanical hand, and the auxiliary mechanical hand can press the tire body.

9. The tire changing apparatus according to claim 8, wherein: The auxiliary mechanical hand comprises at least one rotating rod rotatably connected with the mounting base, and a pressing block is connected with the rotating rod through an electric telescopic rod.

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