Tire loosening device and tire changer

Abstract

The utility model relates to the field of tire dismounting and mounting equipment, and discloses a tire loosening device and a tire changer. The tire loosening device comprises a vertical driving mechanism, a horizontal driving mechanism and a controller, the vertical driving mechanism and the horizontal driving mechanism are connected with each other, the controller is respectively connected with the vertical driving mechanism and the horizontal driving mechanism, and a tire pressing wheel is arranged at one end of the horizontal driving mechanism. The tire pressing wheel can vertically move under the action of a vertical driving mechanism and horizontally move under the action of a horizontal driving mechanism, the utility model further provides a tire loosening machine provided with the tire loosening device, mechanical automation operation of tire loosening is achieved through comprehensive movement control over the tire pressing wheel through the vertical driving mechanism and the horizontal driving mechanism, and the tire loosening efficiency is improved. Compared with the mode of manually loosening the tire by using a crow bar or singly using a separation shovel in the prior art, the tire loosening device has the advantages that the manpower is saved, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of tire disassembly and assembly equipment, in particular to a tire loosening device and a tire changing machine. Background Art

[0002] Tires are one of the most important components of various land vehicles. Tires need to directly bear the weight of the vehicle and contact the ground to provide the friction required for movement. In view of the working environment of tires, tires are also one of the main consumables of automobile vehicles. The rims used to support tires are generally made of metal, which has higher strength, durability and longer service life than tires, making tire replacement a high-frequency task in the daily maintenance and repair of automobile vehicles. Combined with the existing number of land vehicles, the overall workload of tire replacement is quite heavy and time-consuming. The prior art provides a variety of tire disassembly and assembly machines or tire changers to assist operators in improving tire changing efficiency and reducing manual labor intensity.

[0003] There are two common types of tires. One is an ordinary tire consisting of an inner tube and an outer tube, and the other is a tire without an inner tube, also known as a vacuum tire. The carcass of the vacuum tire is in direct contact with the rim and has good heat dissipation. The surface of the vacuum tire is a layer of high-quality rubber. After inflation, the surface tension increases, and a certain pressure is formed on the inner surface, which improves the self-sealing ability of the puncture. Once punctured, the gas will not be completely released instantly like an ordinary tire, but will last for a certain period of time, ensuring safety when driving at high speeds.

[0004] The vacuum tire seal is achieved by combining the outer edge of the tire with the inner edge of the rim, and then using the air pressure inside the tire to make the two surfaces fit tightly together. The bead is the part of the tire that contacts the rim, and is covered with a high-strength triangle rubber and wire ring structure. After the tire pressure expands the tire, the bead will fit tightly with the rim to prevent air pressure from leaking from the gap, and at the same time, it can also firmly fix the tire on the rim. Since the tightness of the tire, especially the tubeless tire, is closely related to the bite of the bead, a damaged bead will seriously affect the tightness of the tire.

[0005] In the tire repair operation, the step of separating the tire lip from the rim is called loosening the tire. In the prior art, the tire is generally loosened by first using a tire pressing wheel to press the tire so that there is a certain gap between the edge of the tire wall and the edge of the rim, and then manually using a crowbar to vigorously impact the junction between the tire lip and the rim to loosen the tire, or using a separation shovel alone to impact and separate. The Chinese utility model patent with publication number CN212979760U discloses a manual and automatic tire disassembly and assembly machine, and the base (1) is also provided with a hydraulic separation shovel (8) for loosening the tire. When the tire disassembly and assembly machine is used, the specific steps are as follows: Step 1: Remove the tire valve to completely deflate the tire. After the tire is completely deflated, use the hydraulic separation shovel to loosen the front and back sides of the tire; Step 2: Turn the tire mounting seat over and lower it, and after installing the tire, turn it over to a horizontal position and lock it; Step 3: After the tire is fixed, enter the tire parameters on the control panel, and press the start key to realize full-automatic tire disassembly; Step 4: When installing the tire, the steps are opposite to those of tire disassembly, first install the lower layer, and then install the upper layer. It can be seen from the above disclosure that before the tire is separated from the rim, a separation shovel is needed to loosen the tire. The tire loosening efficiency is low and it is easy to cause damage to the tire lip, which reduces the airtightness of the tire and shortens the service life of the tire. Utility Model Content

[0006] The utility model aims to provide a tire loosening device and a tire changing machine, so as to improve the efficiency of tire loosening operation and reduce the risk of tire lip damage.

[0007] In order to solve the above technical problems, the implementation method of the utility model provides a technical solution as follows:

[0008] A tire loosening device comprises a vertical drive mechanism and a horizontal drive mechanism connected to each other, and a controller respectively connected to the vertical drive mechanism and the horizontal drive mechanism. A tire beating wheel is provided at one end of the horizontal drive mechanism, and the tire beating wheel can move vertically under the action of the vertical drive mechanism and move horizontally under the action of the horizontal drive mechanism.

[0009] Furthermore, it also includes a sliding sleeve, which is a horizontal sliding sleeve arranged outside the horizontal driving mechanism. A locking device is provided between the sliding sleeve and the horizontal driving mechanism, and the locking device can limit the relative movement between the sliding sleeve and the horizontal driving mechanism.

[0010] Furthermore, the vertical drive mechanism includes a column and a guide sleeve slidingly mounted on the column, the sliding sleeve and the guide sleeve are fixedly connected, a vertical drive mechanism is arranged between the guide sleeve and the column, and a power output end of the vertical drive mechanism is connected to the guide sleeve.

[0011] Further, the horizontal drive mechanism includes an upper drive mechanism, which includes a first horizontal drive and a first drive rod fixedly connected to a power output end of the first horizontal drive, the first drive rod is fixedly connected to an end opposite to the first horizontal drive and is provided with a first tire pressing wheel, a first sliding rod is coaxially sleeved on the outside of the first drive rod, and one end of the first sliding rod is fixedly connected to the first horizontal drive.

[0012] Furthermore, the upper driving mechanism also includes a first connecting member, one end of which is fixedly connected to the first driving rod, and the other end is rotatably connected to the first tire beating wheel, and the angle between the rotation plane of the first tire beating wheel and the horizontal plane is an acute angle.

[0013] Furthermore, the first tire pressing wheel position is a frustum, and the smaller end of the frustum is arranged downward.

[0014] Furthermore, the locking device includes a fixed seat fixedly connected to the sliding sleeve, a first locking drive is fixedly provided on the fixed seat, a locking plate is movably provided on the first sliding rod, one end of the locking plate is movably connected to the sliding sleeve, and the other end is correspondingly arranged to the first locking drive, the power output end of the first locking drive moves toward the locking plate and presses against the locking plate, so that the locking plate rotates and tilts relative to the first sliding rod, and the friction force between the locking plate and the first sliding rod is used to brake and limit the relative movement between the sliding sleeve and the first sliding rod.

[0015] Furthermore, the horizontal driving mechanism further comprises a lower driving mechanism, wherein the lower driving mechanism is arranged opposite to the upper driving mechanism, and the lower driving mechanism comprises a second tire beating wheel, wherein the second tire beating wheel is arranged in a mirror direction relative to the first tire beating wheel.

[0016] Furthermore, the vertical drive mechanism and the first horizontal drive are cylinders.

[0017] In order to solve the technical problem raised in this application, the utility model also provides a tire changing machine, including a main workbench for fixing the tire, a tire changing assembly arranged above the main workbench, and a tire loosening device as described in any of the above items arranged on the side of the main workbench.

[0018] Compared with the prior art, the tire loosening device and tire removing machine provided by the utility model realize the mechanical automation operation of tire loosening through the comprehensive motion control of the tire pressing wheel by the vertical driving mechanism and the horizontal driving mechanism, and complete the tire loosening operation accurately and efficiently. Compared with the prior art method of manually loosening the tire with a crowbar or loosening the tire with a separation shovel alone, it saves manpower and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 It is a schematic structural diagram of a tire loosening device in one embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of a tire changing machine including a tire loosening device in one embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the connection structure between the horizontal drive and the tire pressing wheel in one embodiment of the utility model;

[0023] Figure 4 It is an exploded view of the connection structure between the first horizontal drive and the first tire pressing wheel in one embodiment of the utility model.

[0024] Explanation of reference numerals: 100, main workbench; 200, tire loosening device; 210, first vertical drive; 211, vertical drive mechanism; 220, second vertical drive; 230, first horizontal drive; 231, first sliding rod; 232, first sliding sleeve; 2321, limit plate; 233, handle; 2331, handle; 234, first drive rod; 235, sliding sleeve; 236, upper drive mechanism; 237, horizontal drive mechanism; 240, second horizontal drive; 241, second sliding rod; 242, second sliding sleeve; 243, lower drive mechanism ; 250, first tire beating wheel; 251, first connecting member; 2511, first end; 2512, second end; 2513, connecting shaft; 2514, fastener; 252, tire beating wheel; 260, second tire beating wheel; 261, second connecting member; 270, column; 271, first guide sleeve; 272, second guide sleeve; 273, guide sleeve; 280, first locking drive; 281, locking plate; 282, fixing seat; 283, locking device; 290, second locking drive; 300, tire removing assembly; 400, tire putting assembly; 500, controller. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] The tire is mainly fixed to the rim by the connection between the bead and the rim. At the same time, the airtightness of the tire is closely related to the engagement between the bead and the rim. In the prior art, the bead and the inner edge of the rim are engaged with each other through concave-convex engagement, wherein a V-shaped groove is provided on the inner edge of the rim, and the bead is protruded so as to engage and seal with each other to ensure the airtightness of the tire. Especially after the tire has been used for a period of time, adhesion will occur between the bead and the wheel hub, making it difficult to separate.

[0028] like Figure 1-4 As shown, the utility model provides a tire loosening device 200 used in a tire changing machine. In one embodiment, the tire loosening device 200 includes a vertical driving mechanism and a horizontal driving mechanism 237 connected to each other, and a controller 500 respectively connected to the vertical driving mechanism and the horizontal driving mechanism 237. A tire pressing wheel 252 is provided at one end of the horizontal driving mechanism 237. The tire pressing wheel 252 can move vertically under the action of the vertical driving mechanism 211 structure and move horizontally under the action of the horizontal driving mechanism 237. Driven by the vertical drive mechanism, the tire-pressing wheel 252 is driven to move vertically along the outer edge of the rim toward the tire sidewall. When the distal edge of the tire-pressing wheel 252 moves vertically to the edge of the V-shaped groove of the rim, the horizontal drive mechanism 237 drives the tire-pressing wheel 252 to move horizontally toward the center axis of the tire. The tire-pressing wheel 252 moves horizontally and squeezes into between the rim groove and the tire lip, so that the edge of the tire-pressing wheel 252 applies force along the gap between the tire lip and the rim groove to separate the tire lip from the rim, avoiding the extra step of manually loosening the tire using a crowbar or a loosening shovel, so that the tire-pressing and loosening operations can be integrated and continuous, thereby improving the working efficiency. At the same time, compared with the method of using a crowbar or a loosening shovel to separate the tire and the rim by strong impact, the probability of damaging the tire lip is reduced, thereby extending the service life of the tire.

[0029] In one embodiment, the vertical driving mechanism of the tire loosening device 200 includes a column 270, and a guide sleeve 273 is sleeved on the column 270. The guide sleeve 273 and the column 270 are slidably matched. A vertical driving mechanism 211 is provided between the column 270 and the guide sleeve 273. The power output end of the vertical driving mechanism 211 is a power output shaft, and the output shaft is connected to the guide sleeve 273. The vertical driving mechanism drives the guide sleeve 273 to slide up and down along the column 270 through the telescopic movement of the output shaft.

[0030] In one embodiment, a sleeve 235 is fixedly connected to the guide sleeve 273, and the central axis of the sleeve 235 is perpendicular to the central axis of the guide sleeve 273. A horizontal driving mechanism 237 is horizontally slidably arranged in the sleeve 235. Preferably, a handle 2331 is fixedly provided on the end of the horizontal driving mechanism 237 close to the tire pressing wheel 252. The handle 2331 is held to apply a force to the horizontal driving mechanism 237 along its axial direction, so as to drive the horizontal driving mechanism 237 to move horizontally relative to the sleeve 235. A locking device 283 is provided between the sleeve 235 and the horizontal driving structure, and the locking device 283 can limit the relative movement between the sleeve 235 and the horizontal driving mechanism 237.

[0031] like Figure 4 As shown, in one embodiment, the horizontal driving mechanism 237 includes an upper driving mechanism 236, and the upper driving mechanism 236 includes a first horizontal driving 230, and a first driving rod 234 fixedly connected to the power output end of the first horizontal driving 230, the first driving rod 234 is fixedly connected to the end opposite to the first horizontal driving 230 and is provided with a first tire pressing wheel 250, the first driving rod 234 is coaxially sleeved with a first sliding rod 231 on the outside, and one end of the first sliding rod 231 is fixedly connected to the first horizontal driving 230, and the first horizontal driving 230 can adopt a power output device such as an oil hydraulic cylinder, a cylinder, etc. in the prior art. Preferably, the first horizontal driving 230 adopts a cylinder, which is easy to control, has a low manufacturing cost, and is compact; the power output end of the first horizontal driving 230 is an output shaft, and the output shaft is fixedly connected to the first sliding rod 231, so that The telescopic movement of the output shaft drives the first driving rod 234 and the first tire beating wheel 250 to move horizontally; the first sliding rod 231 is provided with a first sliding sleeve 232 on the outer sliding sleeve, and the upper sliding sleeve of the column 270 is provided with a first guide sleeve 271. A first vertical drive 210 is provided between the column 270 and the first guide sleeve 271. The first vertical drive 210 can adopt a power output device such as an oil hydraulic cylinder or a cylinder in the prior art. Preferably, the first vertical drive 210 adopts a cylinder, and the power output end of the first vertical drive 210 is connected to the first guide sleeve 271, so that the first guide sleeve 271 is driven to move up and down along the column 270 through the telescopic movement of the power output end of the first vertical drive 210. The first guide sleeve 271 is fixedly connected to the first sliding sleeve 232, so that when the first guide sleeve 271 moves along the column 270, it can simultaneously drive the first sliding sleeve 232 and the upper driving mechanism 236 to synchronously move vertically. Under the action of the first vertical drive 210 and the first horizontal drive 230, the first tire beating wheel 250 can be mechanically moved in the horizontal and vertical directions.

[0032] In one embodiment, the locking device 283 includes a fixed seat 282 fixedly connected to the sliding sleeve 235, a first locking drive 280 is fixedly provided on the fixed seat 282, a locking plate 281 is movably sleeved on the first sliding rod 231, one end of the locking plate 281 is movably connected to the sliding sleeve 235, and the other end is correspondingly arranged to the first locking drive 280, the power output end of the first locking drive 280 moves toward the locking plate 281 and presses against the locking plate 281, so that the locking plate 281 rotates and tilts relative to the first sliding rod, and the friction between the locking plate 281 and the first sliding rod is used to brake and limit the relative movement between the sliding sleeve 235 and the first sliding rod; in an exemplary example, the first sliding rod 23 1 is a hexagonal prism, two limiting plates 2321 are provided at both ends of the first sliding sleeve 232 along the axial direction, and the limiting plates 2321 are provided with through holes matching the shape of the first sliding rod 231 so as to slide with the first sliding rod 231. The locking plate 281 is movably sleeved on the outside of the first sliding rod 231, and the locking plate 281 is provided with a through hole matching the shape of the first sliding rod 231. When the first locking drive 280 presses against the locking plate, it is beneficial to increase the contact point or contact surface between the locking plate 281 and the first sliding rod 231, so that under the same force, the friction between the locking plate 281 and the first sliding rod 231 can be increased, and the reliability of the locking device 283 can be increased. Preferably, the first locking drive 280 adopts a cylinder.

[0033] In one embodiment, a handle 233 is sleeved on one end of the first sliding rod 231 close to the first tire beating wheel 250, and a handle 2331 is fixedly provided perpendicular to the outer surface of the handle 233 to facilitate the operator to hold the handle 2331 to apply force to the horizontal driving mechanism 237. Preferably, a threaded through hole is provided on the handle 233, and an external thread is provided on the end of the handle 2331 connected to the handle 233. One end of the handle 2331 can be pressed against the surface of the first sliding rod 231 by threaded cooperation with the handle 233, so that the handle 233 and the first sliding rod 231 are relatively fixed.

[0034] In one embodiment, the upper driving mechanism 236 further includes a first connecting member 251, the first connecting member 251 includes a first end 2511 fixedly connected to the first driving rod 234, and a second end 2512 rotatably connected to the first tire pressing wheel 250, preferably, the first end 2511 and the second end 2512 are integrally bent and formed, and the plane angle between the first end 2511 and the second end 2512 is an obtuse angle; the first end 2511 is fixedly connected to the first driving rod 234 through a fastener 2514, and the second end 2512 is rotatably connected to the first tire pressing wheel 250 through a connecting shaft 2513, preferably, the tire pressing wheel 252 is coaxially sleeved on the connecting shaft 2513; the angle between the rotation plane of the first tire pressing wheel 250 and the horizontal plane is an acute angle. Preferably, the inclination angle of the first tire pressing wheel 250 is consistent with the inclination angle of the side wall of the rim groove. The first tire pressing wheel 250 is a frustum, and the smaller end of the frustum plane is set downward, that is, it is set toward the tire.

[0035] like Figure 3 In one embodiment, the horizontal driving mechanism 237 also includes a lower driving mechanism 243, and the lower driving mechanism 243 is arranged opposite to the upper driving mechanism 236. The lower driving mechanism 243 includes a second tire pressing wheel 260, and the second tire pressing wheel 260 is arranged in a mirror-like manner relative to the first tire pressing wheel 250. The structure of the lower driving mechanism 243 is consistent with that of the upper driving mechanism 236. The lower driving mechanism 243 includes a second horizontal driving 240, and the power output end of the second horizontal driving 240 is rotatably connected to the second tire pressing wheel 260 through a second connecting member 261. The outer sliding sleeve of the second sliding rod 241 of the lower driving mechanism 243 is provided with a second sliding sleeve 242, and the column 270 is provided with a second guide sleeve 272 corresponding to the second sliding sleeve 242, and one end of the second guide sleeve 272 is connected to the second vertical driving 22 0, the second sliding sleeve 242 is fixedly connected to the second guide sleeve 272, and under the action of the second vertical drive 220 and the second horizontal drive 240, the second tire pressing wheel 260 can be mechanically moved in the horizontal and vertical directions. The lower driving mechanism 243 is also provided with a locking device 283, which includes a fixed seat 282 fixedly arranged on the second sliding sleeve 242, and a second locking drive 290 fixedly arranged on the fixed seat 282. The second sliding rod 241 is externally sleeved with a locking piece 281, and one end of the locking piece 281 is connected to the second guide sleeve 272. The second locking drive 290 can push against the locking piece 281 to increase the friction between the locking piece 281 and the second sliding rod 241, thereby limiting the relative movement between the second sliding sleeve 242 and the second sliding rod 241. Preferably, the second horizontal drive 240 and the second vertical drive 220 are cylinders. By setting the lower driving mechanism 243, both sides of the tire can be loosened at the same time, which reduces manual work and makes the tire loosening operation more efficient.

[0036] like Figure 2 As shown, the utility model also provides a tire changing machine, including a main workbench 100, wherein the main workbench 100 is used for carrying the tire to be repaired, and for positioning and fixing the tire; a tire loosening device 200 as described above is arranged on the side of the main workbench 100, and the tire loosening device 200 can efficiently complete the tire loosening action, and reduce the probability of tire lip damage during the tire loosening process; a tire changing assembly 300 is arranged above the main workbench 100, and the tire changing assembly 300 cooperates with the tire loosening device 200 to make the tire completely detach from the rim, so as to repair and replace the tire; the tire changing machine also includes a control device, which is connected to the main workbench 100, the tire loosening device 200, and the tire changing assembly 300, and can control the movement of the main workbench 100, the tire loosening device 200, and the tire changing assembly 300 to complete the tire changing operation. Preferably, a tire upper assembly 400 is provided on the side of the main workbench 100, and the tire upper assembly 400 can move the tire to the main workbench 100 for positioning and fixing through lifting movement, which can save manpower and improve efficiency.

[0037] Compared with the prior art, the tire loosening device and tire removing machine provided by the utility model realize the mechanical automation operation of tire loosening through the comprehensive motion control of the tire pressing wheel by the vertical driving mechanism and the horizontal driving mechanism, and complete the tire loosening operation accurately and efficiently. Compared with the prior art method of manually loosening the tire with a crowbar or loosening the tire with a separation shovel alone, it saves manpower and improves efficiency.

[0038] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A tire loosening device, characterized in that: The invention comprises a vertical driving mechanism (211) and a horizontal driving mechanism (237) which are connected to each other, and a controller (500) which is respectively connected to the vertical driving mechanism and the horizontal driving mechanism (237); a tire pressing wheel (252) is provided at one end of the horizontal driving mechanism (237); the tire pressing wheel (252) can move vertically under the action of the vertical driving mechanism (211) and move horizontally under the action of the horizontal driving mechanism (237); and a sliding sleeve (235) is horizontally slidably sleeved on the outside of the horizontal driving mechanism (237); a locking device (283) is provided between the sliding sleeve (235) and the horizontal driving mechanism (237); the locking device (283) can limit the relative movement between the sliding sleeve (235) and the horizontal driving mechanism (237).

2. The tire loosening device according to claim 1, characterized in that: The vertical driving mechanism comprises a column (270) and a guide sleeve (273) which is slidably mounted on the column (270); the sliding sleeve (235) is fixedly connected to the guide sleeve (273); a vertical driving mechanism (211) is arranged between the guide sleeve (273) and the column (270); and a power output end of the vertical driving mechanism (211) is connected to the guide sleeve (273).

3. The tire loosening device according to claim 2, characterized in that: The horizontal driving mechanism (237) includes an upper driving mechanism (236), and the upper driving mechanism (236) includes a first horizontal driving (230), and a first driving rod (234) fixedly connected to the power output end of the first horizontal driving (230), and a first tire pressing wheel (250) is fixedly connected to the end of the first driving rod (234) opposite to the first horizontal driving (230), and a first sliding rod (231) is coaxially sleeved on the outside of the first driving rod (234), and one end of the first sliding rod (231) is fixedly connected to the first horizontal driving (230).

4. The tire loosening device according to claim 3, characterized in that: The upper driving mechanism (236) further comprises a first connecting member (251), one end of the first connecting member (251) being fixedly connected to the first driving rod (234), and the other end of the first connecting member (251) being rotationally connected to the first tire beating wheel (250), and the angle between the rotation plane of the first tire beating wheel (250) and the horizontal plane is an acute angle.

5. The tire loosening device according to claim 4, characterized in that: The first tire pressing wheel (250) is a frustum, and the smaller end of the frustum is arranged downward.

6. The tire loosening device according to claim 3, characterized in that: The locking device (283) includes a fixed seat (282) fixedly connected to the sliding sleeve (235), a first locking drive (280) is fixedly provided on the fixed seat (282), a locking plate (281) is movably provided on the first sliding rod (231), one end of the locking plate (281) is movably connected to the sliding sleeve (235), and the other end is correspondingly arranged to the first locking drive (280), the power output end of the first locking drive (280) moves toward the locking plate (281) and presses against the locking plate (281), so that the locking plate (281) rotates and tilts relative to the first sliding rod, and the friction between the locking plate (281) and the first sliding rod is used to brake and limit the relative movement between the sliding sleeve (235) and the first sliding rod.

7. The tire loosening device according to claim 3, characterized in that: The horizontal driving mechanism (237) further comprises a lower driving mechanism (243), wherein the lower driving mechanism (243) is arranged opposite to the upper driving mechanism (236), and the lower driving mechanism (243) comprises a second tire pressing wheel (260), wherein the second tire pressing wheel (260) is arranged in a mirror-like manner relative to the first tire pressing wheel (250).

8. The tire loosening device according to claim 3, characterized in that: The vertical drive mechanism (211) and the first horizontal drive (230) are cylinders.

9. A tire changing machine, characterized in that: The invention comprises a main working platform (100) for fixing tires, a tire removing assembly (300) arranged above the main working platform (100), and a tire loosening device (200) as claimed in any one of claims 1 to 8 arranged on the side of the main working platform (100).

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