Tire dismounting and mounting hook assembly and tire dismounting and mounting machine

Abstract

The utility model provides a kind of tire dismounting hook assembly and tire dismounting machine, tire dismounting hook assembly includes: support seat;Tire dismounting hook, with respectively located at both ends hook body part and first connecting part, it also has the second connecting part between the hook body part and the first connecting part, the second connecting part is rotatedly connected the support seat by first pin shaft;Driving device, for driving the tire dismounting hook rotates around first pin shaft relative to the support seat.The utility model embodiment provides sufficient pressing force for driving device to tire dismounting hook, improves the success rate that tire dismounting hook is pressed into the gap formed between the lip of tire and hub that are adhered, improves the efficiency of tire dismounting.

Description

Technical Field

[0001] This utility model relates to the field of vehicle repair technology, and in particular to a tire mounting hook assembly and a tire mounting machine. Background Technology

[0002] Under pressure, the wheel rim and the tire bead of the tire to be removed will stick together due to prolonged contact. This adhesion increases the difficulty of removing the tire from the wheel rim.

[0003] Most existing tire removal hooks are operated manually. For tires that are stuck to the rim, the manual operation of the tire removal hook results in low downward pressure, making it difficult to press the tire bead into the rim to create a gap, resulting in low tire removal efficiency. Utility Model Content

[0004] This utility model provides a tire removal hook assembly and a tire removal machine to solve the problem that existing tire removal hooks are mostly operated manually. For tires to be removed where the tire bead is stuck to the rim, the manual operation of the tire removal hook results in low downward pressure, making it difficult to press into the gap between the tire bead and the rim to create a gap, and thus low tire removal efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows: In a first aspect, embodiments of this utility model provide a tire mounting / removing hook assembly, comprising: Support base; The tire mounting hook has a hook body and a first connecting part located at both ends, and a second connecting part located between the hook body and the first connecting part. The second connecting part is rotatably connected to the support base via a first pin. A driving device is used to drive the tire mounting hook to rotate relative to the support seat about the first pin. The outer edge of the hook body on the side away from the support base is arc-shaped, and the inner edge of the hook body on the side closer to the support base is arc-shaped. The central angle c of the outer edge satisfies: 93°≤c≤98°.

[0006] Optionally, the support base includes: A rotating arm, one end of which has a first opening communicating with the arm cavity of the rotating arm; Support plate; The driving device includes: The first drive cylinder has one end slidably and telescopically disposed in the arm cavity of the rotating arm from the first opening, the support plate is disposed at the other end of the first drive cylinder, and the second connecting part is rotatably connected to the support plate through the first pin. The connector has one end rotatably connected to the first connecting part via a second pin, and the other end rotatably connected to the extended end of the telescopic arm of the first driving cylinder via a third pin.

[0007] Optionally, the cylinder wall of the first driving cylinder has a plurality of first limiting holes spaced apart along the length direction of the first driving cylinder; The rotating arm has a first through hole; The tire removal hook assembly also includes: A first limiting pin passes through the first through hole and is inserted into the first limiting hole that corresponds to the first through hole among the plurality of first limiting holes.

[0008] Optionally, the support base includes: A rotating arm, one end of which has a first opening communicating with the arm cavity of the rotating arm; The limiting arm has one end slidably and telescopically disposed in the arm cavity of the rotating arm from the first opening, and the other end is provided with a connecting seat. The second connecting part is rotatably connected to the connecting seat through the first pin. The driving device includes: The second drive cylinder is mounted on the connecting seat, and the first connecting part is rotatably connected to the extended end of the telescopic arm of the second drive cylinder via the fourth pin.

[0009] Optionally, the limiting arm has a plurality of second limiting holes spaced apart along the length direction of the limiting arm; The rotating arm has a second through hole; The tire removal hook assembly also includes: The second limiting pin passes through the second through hole and is inserted into the second limiting hole that corresponds to the second through hole among the plurality of second limiting holes.

[0010] Optionally, the support base includes: Rotary arm; A positioning arm extends through the arm cavity of the rotating arm and can slide along the arm cavity of the rotating arm. A first support plate is provided at one end, and an assembly seat is provided at the other end. The first connecting part is rotatably connected to the first support plate through the first pin. The driving device includes: The third drive cylinder is located on the assembly base; The first transmission rod passes through the arm cavity of the positioning arm and can slide along the arm cavity of the positioning arm; The second transmission rod has one end rotatably connected to the end of the first transmission rod extending from one side of the mounting base, and the other end rotatably connected to the extended end of the telescopic arm of the third drive cylinder. The second transmission rod is also rotatably connected to the mounting base. The first connector has one end rotatably connected to the first connecting part via a fifth pin, and the other end rotatably connected to the end of the first transmission rod extending from one side of the first support plate via a sixth pin.

[0011] Optionally, the positioning arm has a plurality of third limiting holes spaced apart along the length direction of the positioning arm; The rotating arm has a third through hole; The tire removal hook assembly also includes: The third limiting pin passes through the third through hole and is inserted into the third limiting hole that corresponds to the third through hole among the plurality of third limiting holes.

[0012] Optionally, it also includes: A sliding plate is located on the outer side of the column of the tire changer and can slide up and down along the column; The rotating arm is rotatably mounted on the slide plate about an axis extending in the vertical direction.

[0013] Optionally, it also includes: A locking mechanism is used to lock the rotating arm in a working position close to the slide plate.

[0014] Secondly, embodiments of the present invention provide a tire changer, including a tire changer hook assembly as described in any one of the first aspects.

[0015] In this embodiment of the invention, the tire removal hook assembly includes: a support base; a tire removal hook having a hook body portion and a first connecting portion located at both ends, and a second connecting portion located between the hook body portion and the first connecting portion, the second connecting portion being rotatably connected to the support base via a first pin; and a driving device for driving the tire removal hook to rotate relative to the support base around the first pin. In this embodiment of the invention, the driving device provides sufficient downward pressure to the tire removal hook, thereby increasing the success rate of the tire removal hook pressing into the gap formed between the adhered tire bead and the wheel hub, and improving tire removal efficiency. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is one of the structural schematic diagrams of the tire mounting / removing hook assembly according to an embodiment of the present utility model; Figure 2 This is a schematic diagram showing the disassembly of the tire mounting / removing hook assembly according to an embodiment of the present invention; Figure 3A schematic diagram of the tire mounting / removing hook; Figure 4 This is a top view of the tire mounting / removing hook assembly according to an embodiment of the present utility model; Figure 5 For the corresponding Figure 4 Cross-sectional view of the tire mounting hook assembly on the FF line; Figure 6 This is the second structural schematic diagram of the tire mounting and dismounting hook assembly according to an embodiment of this utility model; Figure 7 This is the third structural schematic diagram of the tire mounting and dismounting hook assembly according to an embodiment of this utility model; Figure 8 This is the fourth structural schematic diagram of the tire mounting and dismounting hook assembly according to an embodiment of this utility model; in: 20. Support base; 21. Rotary arm; 21a. First through hole; 21b. Second through hole; 21c. Third through hole; 22. First drive cylinder; 22a. First limiting hole; 221. Support plate; 222. Telescopic arm of the first drive cylinder; 23. Tire mounting / removing hook; 231. Hook body; 232. First connecting part; 233. Second connecting part; 24. Connecting piece; 25. First limiting pin; 26. Limiting arm; 26a. Second limiting hole; 261. Connecting seat; 27. Second drive cylinder; 271. Telescopic arm of the second drive cylinder; 29. ​​Second limiting pin; 210. Positioning arm; 210a. Third limiting hole; 2101. First support plate; 2102. Assembly base; 211. Third drive cylinder; 2111. Telescopic arm of the third drive cylinder; 212. First transmission rod; 213. Second transmission rod; 213a. Connecting groove; 215. Third limiting pin; 216. First connecting piece; 41. Hook; 42. Elastic component; 50. Pin; 51. First pin; 52. Second pin; 53. Third pin. Detailed Implementation

[0017] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In the description of the embodiments of this utility model, the terms "first," "second," etc., are used to distinguish similar objects, not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, without limiting the number of objects; for example, the first object can be one or more. Furthermore, in the embodiments of this utility model, "or" indicates at least one of the connected objects. For example, "A or B" covers three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] In the description of the embodiments of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure. The front end can be referred to as the rear end, and the rear end can be referred to as the front end.

[0020] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of the embodiments of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a flexible connection or a rigid connection along at least one direction; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a direct connection with an intermediate medium present; they can also refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. The terms "installed," "set," "fixed," etc., can be broadly understood as connection. For those skilled in the art, the specific meaning of the above terms in this embodiment of the invention can be understood according to the specific circumstances.

[0023] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] This utility model embodiment provides a tire mounting / removing hook assembly, see [link to relevant documentation]. Figures 1 to 8 As shown, the tire mounting / removing hook assembly includes: Support base 20; The tire mounting hook 23 has a hook body portion 231 and a first connecting portion 232 located at both ends, and a second connecting portion 233 located between the hook body portion 231 and the first connecting portion 232. The second connecting portion 233 is rotatably connected to the support base 20 via a first pin 51. The drive unit is used to drive the tire removal hook 23 to rotate around the first pin 51 relative to the support seat 20; The outer edge of the hook body on the side away from the support base is arc-shaped, and the inner edge of the hook body on the side closer to the support base is arc-shaped. The central angle c of the outer edge satisfies: 93° ≤ c ≤ 98°. (See also...) Figure 3 As shown, the outer edge is Rb, the inner edge is Ra, and the center of the outer edge is a0.

[0025] In some embodiments, the central angle c+d formed by the axis from the end of the hook body 231 to the first pin 51 with the center a0 satisfies: c+d=133°.

[0026] In some specific embodiments, Ra = R46 (mm) and Rb = R60 (mm). In some embodiments, the hook portion 231 is arc-shaped, and the thickness of the hook portion 231 gradually decreases in the direction from the second connecting portion 233 to the hook portion 231, which increases the downward pressure and improves the success rate of the tire removal hook 23 pressing into the gap between the adhered tire bead and the wheel hub, thereby improving tire removal efficiency.

[0027] In some embodiments, the drive device includes at least one of the following: an electric motor, a servo motor, a hydraulic cylinder, a hydraulic motor, a pneumatic cylinder, or a pneumatic motor.

[0028] In some embodiments, the user can preset the output power of the drive device to ensure that the drive device can provide sufficient downward pressure to the tire removal hook 23, thereby increasing the success rate of the tire removal hook 23 pressing into the gap between the adhered tire bead and the wheel hub, and improving tire removal efficiency.

[0029] In some embodiments, the drive device is electrically connected to the controller, which includes a first control interface for receiving a downward pressure signal or an upward pressure signal sent by the user through an interactive terminal, and forwarding the downward pressure signal or the upward pressure signal to the drive device. After receiving the downward pressure signal, the drive device drives the tire removal hook 23 to rotate downward around the first pin 51, and after receiving the upward pressure signal, the drive device drives the tire removal hook 23 to rotate upward around the first pin 51.

[0030] Understandably, when tire removal is required, the user can operate the drive unit to rotate the tire removal hook 23 downwards around the first pin 51, causing the hook body 231 to press into the gap between the adhered tire bead and the rim. Further, the user can operate the tire to rotate around its own axis until the tire bead and rim are completely separated.

[0031] In this embodiment of the invention, the tire removal hook assembly includes: a support base 20; a tire removal hook 23 having a hook body portion 231 and a first connecting portion 232 located at both ends, and a second connecting portion 233 located between the hook body portion 231 and the first connecting portion 232, the second connecting portion 233 being rotatably connected to the support base 20 via a first pin 51; and a driving device for driving the tire removal hook 23 to rotate relative to the support base 20 around the first pin 51. In this embodiment of the invention, the driving device provides sufficient downward pressure to the tire removal hook 23, increasing the success rate of the tire removal hook 23 pressing into the gap formed between the adhered tire bead and the rim, thereby improving tire removal efficiency. See also some embodiments. Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the support base 20 includes: The rotating arm 21 has a first opening at one end that communicates with the arm cavity of the rotating arm 21; Support plate 221; The drive unit includes: The first drive cylinder 22 has one end slidably telescopically disposed in the arm cavity of the rotating arm 21 from the first opening, and the support plate 221 is disposed at the other end of the first drive cylinder 22. The second connecting part 233 is rotatably connected to the support plate 221 through the first pin 51. The connector 24 has one end rotatably connected to the first connecting part 232 via the second pin 52, and the other end rotatably connected to the extended end of the telescopic arm 222 of the first driving cylinder via the third pin 53.

[0032] In practical applications, when it is necessary to remove the tire, the user places the tire to be removed in the tire removal operation position and further operates the first drive cylinder 22, causing the telescopic arm 222 of the first drive cylinder to extend outward. Through the connecting piece 24, the telescopic arm 222 of the first drive cylinder drives the first tire removal hook 23 to rotate downward around the first pin 51 until the hook body 231 presses into the gap between the tire bead and the rim of the tire to be removed. In this case, the user further operates the tire to be removed to rotate around the rim axis, promoting the hook body 231 to hook away the adhered tire bead and rim.

[0033] In this embodiment of the present invention, the support base 20 includes: a rotating arm 21, one end of which has a first opening communicating with the arm cavity of the rotating arm 21; a support plate 221; the driving device includes: a first driving cylinder 22, one end of which is slidably and telescopically disposed in the arm cavity of the rotating arm 21 from the first opening, the support plate 221 is disposed at the other end of the first driving cylinder 22, and a second connecting part 233 is rotatably connected to the support plate 221 through a first pin 51; a connecting member 24, one end of which is rotatably connected to the first connecting part 232 through a second pin 52, and the other end of which is rotatably connected to the extended end of the telescopic arm 222 of the first driving cylinder through a third pin 53. The tire disassembly and assembly mechanism of this embodiment of the present invention can efficiently disassemble and assemble tires.

[0034] In some embodiments, see Figure 2 As shown, the cross-section of the arm cavity of the rotating arm 21 is polygonal, and the first drive cylinder 22 is a prism that can cooperate with the arm cavity of the rotating arm 21. The first drive cylinder 22 is set in the arm cavity of the rotating arm 21. The rotating arm 21 provides a limit for the tire removal hook 23, which avoids the situation where the tire removal hook 23 is driven by the reaction force of the tire to be removed during the tire removal operation, causing the first drive cylinder 22 to rotate around its own axis (avoiding positional displacement), thereby avoiding the safety accident caused by this.

[0035] In some embodiments, see Figure 1 , Figure 2 As shown, the cylinder wall of the first driving cylinder 22 has a plurality of first limiting holes 22a arranged at intervals along the length direction of the first driving cylinder 22. The rotating arm 21 has a first through hole 21a; The tire mounting hook assembly also includes: The first limiting pin 25 passes through the first through hole 21a and is inserted into the first limiting hole 22a that is aligned with the first through hole 21a among a plurality of first limiting holes 22a.

[0036] In this embodiment of the invention, the first limiting pin 25 can be inserted into any of the first through holes 21a. In practical applications, according to the size of the tire to be removed, the user can flexibly adjust the extension amount of the first drive cylinder 22 extending the rotating arm 21. After achieving the extension amount determined by the user, the first through hole 21a is aligned with a first limiting hole 22a that matches the extension amount. The first limiting pin 25 is then inserted through the first through hole 21a and into the first limiting hole 22a to achieve locking. Through the above design, this embodiment of the invention can adapt to tires of various sizes, avoiding the need to frequently change different tire removal hook assemblies to adapt to different tire sizes, thereby improving tire removal efficiency.

[0037] In some embodiments, see Figure 6 As shown, the support base 20 includes: The rotating arm 21 has a first opening at one end that communicates with the arm cavity of the rotating arm 21; The limiting arm 26 has one end slidably telescopically disposed in the arm cavity of the rotating arm 21 from the first opening, and the other end is provided with a connecting seat 261. The second connecting part 233 is rotatably connected to the connecting seat 261 through the first pin 51. The drive unit includes: The second drive cylinder 27 is mounted on the connecting seat 261, and the first connecting part 232 is rotatably connected to the extended end of the telescopic arm 271 of the second drive cylinder via the fourth pin.

[0038] It should be noted that in some embodiments, the first drive cylinder 22 needs to be machined to fit the arm cavity of the rotating arm 21, or the first drive cylinder 22 needs to be customized to have a shape that fits the arm cavity of the rotating arm 21. Specifically, see [link to documentation]. Figure 1 , Figure 2 The cross-section of the arm cavity of the rotating arm 21 shown is polygonal. The first drive cylinder 22 is a prism that can cooperate with the arm cavity of the rotating arm 21. The first drive cylinder 22 is set in the arm cavity of the rotating arm 21. The rotating arm 21 provides a limit for the tire removal hook 23, which avoids the situation where the tire removal hook 23 is driven by the reaction force of the tire to be removed during the tire removal operation, causing the first drive cylinder 22 to rotate around its own axis (avoiding positional displacement), thereby avoiding the safety accident caused by this.

[0039] However, machining the first drive cylinder 22 to fit the arm cavity of the rotating arm 21 requires overall machining and design of the first drive cylinder 22. Furthermore, during machining, it is crucial to ensure the proper extension and retraction function of the first drive cylinder 22 to avoid damage to the hydraulic circuit or the telescopic arm, making manufacturing difficult. Customizing the first drive cylinder 22 to fit the arm cavity of the rotating arm 21 would easily lead to extended production cycles and high production costs.

[0040] Based on this, in this embodiment of the invention, the limiting arm 26 is a prism that can cooperate with the arm cavity of the rotating arm 21. The limiting arm 26 is slidably and telescopically disposed within the arm cavity of the rotating arm 21. This embodiment of the invention achieves the aforementioned function of preventing positional displacement. Furthermore, during manufacturing, only the limiting arm 26 needs to be machined or customized; there is no need to ensure the functionality of the first drive cylinder 22 during machining, resulting in low manufacturing difficulty. Even if the limiting arm 26 is customized, it is simpler than customizing the first drive cylinder 22. Standard parts can be quickly customized or directly purchased (for example, the cross-section of the arm cavity of the rotating arm 21 is rectangular, and the limiting arm 26 is a quadrangular prism that can cooperate with the aforementioned arm cavity; rectangular tube standard parts are readily available on the market and can be directly purchased). This embodiment of the invention reduces the difficulty of manufacturing, thereby improving production efficiency and reducing manufacturing costs.

[0041] In some embodiments, see Figure 6 As shown, the limiting arm 26 has a plurality of second limiting holes 26a arranged at intervals along the length direction of the limiting arm 26; The rotating arm 21 has a second through hole 21b; The tire mounting hook assembly also includes: The second limiting pin 29 passes through the second through hole 21b and is inserted into the second limiting hole 26a of the plurality of second limiting holes 26a that is aligned with the second through hole 21b.

[0042] In this embodiment of the invention, the second limiting pin 29 can be inserted into any of the second through holes 21b. In practical applications, the user can flexibly adjust the distance between the tire removal hook 23 and the tire to be removed according to the size specifications of the tire to be removed. After achieving the distance determined by the user, the second through hole 21b is aligned with a second limiting hole 26a that matches the distance. The second limiting pin 29 is then inserted through the second through hole 21b and into the second limiting hole 26a to achieve locking. Through the above design, this embodiment of the invention can adapt to tires of various sizes, avoiding the need to frequently change different tire removal hook assemblies to adapt to different sizes of tires, thereby improving tire removal efficiency.

[0043] In some embodiments, see Figure 7 , Figure 8 As shown, the support base 20 includes: Rotary arm 21; The positioning arm 210 passes through the arm cavity of the rotating arm 21 and can slide along the arm cavity of the rotating arm 21. One end is provided with a first support plate 2101 and the other end is provided with a mounting base 2102. The first connecting part 232 is rotatably connected to the first support plate 2101 through a first pin 51. The drive unit includes: The third drive cylinder 211 is located on the mounting base 2102; The first transmission rod 212 passes through the arm cavity of the positioning arm 210 and can slide along the arm cavity of the positioning arm 210; The second transmission rod 213 has one end rotatably connected to the end of the first transmission rod 212 that extends from one side of the mounting base 2102, and the other end rotatably connected to the extended end of the telescopic arm 2111 of the third drive cylinder. The second transmission rod 213 is also rotatably connected to the mounting base 2102. The first connector 216 has one end rotatably connected to the first connector 232 via a fifth pin, and the other end rotatably connected to the end of the first transmission rod 212 extending from one side of the first support plate 2101 via a sixth pin.

[0044] In this embodiment of the present invention, the two ends of the second transmission rod 213 respectively have connecting grooves 213a extending along the length direction of the second transmission rod 213, and the two ends of the second transmission rod 213 are rotatably connected to the first transmission rod 212 and the telescopic arm 2111 of the third drive cylinder through pins 50 provided in the connecting grooves 213a.

[0045] It should be noted that when the user operates the telescopic arm 2111 of the third drive cylinder to extend, the telescopic arm 2111 of the third drive cylinder drives the first drive rod 212 to extend via the transmission of the second drive rod 213, thereby driving the tire removal hook 23 to rotate downward around the first pin 51.

[0046] In this embodiment of the invention, the positioning arm 210 is a prism-shaped component that can mate with the arm cavity of the rotating arm 21. By penetrating the arm cavity of the rotating arm and sliding along the arm cavity of the rotating arm 21, this embodiment of the invention achieves the function of preventing positional displacement. Furthermore, during manufacturing, only the positioning arm 210 needs to be machined or customized. During machining, it is not necessary to ensure the functionality of the first drive cylinder 22, thus reducing manufacturing difficulty. Even if the positioning arm 210 is customized, it is simpler than customizing the first drive cylinder 22. Standard parts can be quickly customized or directly purchased (for example, the cross-section of the arm cavity of the rotating arm 21 is rectangular, and the limiting arm 26 is a quadrangular prism that can mate with the aforementioned arm cavity. Rectangular tube standard parts are readily available in the market and can be purchased directly). This embodiment of the invention reduces the difficulty of manufacturing, thereby improving production efficiency and reducing manufacturing costs.

[0047] In some embodiments, see Figure 7 , Figure 8 As shown, the cross-section of the arm cavity of the rotating arm 21 is hexagonal, and the positioning arm 210 is a hexagonal prism that can cooperate with the arm cavity.

[0048] In some embodiments, see Figure 7 , Figure 8As shown, the positioning arm 210 has a plurality of third limiting holes 210a arranged at intervals along the length direction of the positioning arm 210; The rotating arm 21 has a third through hole 21c; The tire mounting hook assembly also includes: The third limiting pin 215 passes through the third through hole 21c and is inserted into the third limiting hole 210a that is aligned with the third through hole 21c among the multiple third limiting holes 210a.

[0049] In this embodiment of the invention, the third limiting pin 215 can be inserted into any of the third through holes 21c. In practical applications, the user can flexibly adjust the distance between the tire removal hook 23 and the tire to be removed according to the size specifications of the tire to be removed. After achieving the distance determined by the user, the third through hole 21c is aligned with a third limiting hole 210a that matches the distance. The third limiting pin 215 is then inserted through the third through hole 21c and into the third limiting hole 210a to achieve locking. Through the above design, this embodiment of the invention can adapt to tires of various sizes, avoiding the need to frequently change different tire removal hook assemblies to adapt to different sizes of tires, thereby improving tire removal efficiency.

[0050] In some embodiments, the tire removal hook assembly further includes: The sliding plate (not shown in the figure) is located on the outer side of the column of the tire changer and can slide up and down along the column; The rotating arm 21 is rotatably mounted on the slide plate (not shown in the figure) about an axis extending in the vertical direction.

[0051] When tire removal is required, the user can operate the rotating arm 21 to rotate around the axis in a direction away from the slide plate (not shown in the figure), so as to facilitate placing the tire to be removed into the tire removal operation position.

[0052] In some embodiments, the tire removal hook assembly further includes: A locking mechanism is used to lock the boom 21 in a working position close to the slide plate (not shown).

[0053] In some embodiments, the locking mechanism includes: The hook 41 is rotatably mounted on the rotating arm 21 about an axis extending vertically. When the rotating arm 21 is in the working position, the hook 41 can hook onto the boss of the sliding plate (not shown in the figure). The hook 41 hooks onto the boss, thereby locking the rotating arm 21 in the working position.

[0054] The elastic element 42 is connected to the rotating arm 21 at one end and to the hook 41 at the other end, and is used to provide the elastic force required to maintain the hook 41 hooking the boss.

[0055] In this embodiment of the invention, the locking mechanism includes a hook 41 and an elastic element 42, which has a simple structure and high reliability.

[0056] This utility model provides a tire changer, including a tire changer hook assembly according to any one of the present utility model embodiments, which can achieve highly efficient tire change operations.

[0057] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A tire mounting / removing hook assembly, characterized in that, include: Support base; The tire mounting hook has a hook body and a first connecting part located at both ends, and a second connecting part located between the hook body and the first connecting part. The second connecting part is rotatably connected to the support base via a first pin. A driving device is used to drive the tire mounting hook to rotate relative to the support seat about the first pin. The outer edge of the hook body on the side away from the support base is arc-shaped, and the inner edge of the hook body on the side closer to the support base is arc-shaped. The central angle c of the outer edge satisfies: 93°≤c≤98°.

2. The tire mounting / removing hook assembly according to claim 1, characterized in that, The support base includes: A rotating arm, one end of which has a first opening communicating with the arm cavity of the rotating arm; Support plate; The driving device includes: The first drive cylinder has one end slidably and telescopically disposed in the arm cavity of the rotating arm from the first opening, the support plate is disposed at the other end of the first drive cylinder, and the second connecting part is rotatably connected to the support plate through the first pin. The connector has one end rotatably connected to the first connecting part via a second pin, and the other end rotatably connected to the extended end of the telescopic arm of the first driving cylinder via a third pin.

3. The tire mounting / removing hook assembly according to claim 2, characterized in that, The cylinder wall of the first driving cylinder has a plurality of first limiting holes arranged at intervals along the length direction of the first driving cylinder. The rotating arm has a first through hole; The tire removal hook assembly also includes: A first limiting pin passes through the first through hole and is inserted into the first limiting hole that corresponds to the first through hole among the plurality of first limiting holes.

4. The tire mounting / removing hook assembly according to claim 1, characterized in that, The support base includes: A rotating arm, one end of which has a first opening communicating with the arm cavity of the rotating arm; The limiting arm has one end slidably and telescopically disposed in the arm cavity of the rotating arm from the first opening, and the other end is provided with a connecting seat. The second connecting part is rotatably connected to the connecting seat through the first pin. The driving device includes: The second drive cylinder is mounted on the connecting seat, and the first connecting part is rotatably connected to the extended end of the telescopic arm of the second drive cylinder via the fourth pin.

5. The tire mounting / removing hook assembly according to claim 4, characterized in that, The limiting arm has a plurality of second limiting holes spaced apart along the length direction of the limiting arm; The rotating arm has a second through hole; The tire removal hook assembly also includes: The second limiting pin passes through the second through hole and is inserted into the second limiting hole that corresponds to the second through hole among the plurality of second limiting holes.

6. The tire mounting / removing hook assembly according to claim 1, characterized in that, The support base includes: Rotary arm; A positioning arm extends through the arm cavity of the rotating arm and can slide along the arm cavity of the rotating arm. A first support plate is provided at one end, and an assembly seat is provided at the other end. The first connecting part is rotatably connected to the first support plate through the first pin. The driving device includes: The third drive cylinder is located on the assembly base; The first transmission rod passes through the arm cavity of the positioning arm and can slide along the arm cavity of the positioning arm; The second transmission rod has one end rotatably connected to the end of the first transmission rod extending from one side of the mounting base, and the other end rotatably connected to the extended end of the telescopic arm of the third drive cylinder. The second transmission rod is also rotatably connected to the mounting base. The first connector has one end rotatably connected to the first connecting part via a fifth pin, and the other end rotatably connected to the end of the first transmission rod extending from one side of the first support plate via a sixth pin.

7. The tire mounting / removing hook assembly according to claim 6, characterized in that, The positioning arm has a plurality of third limiting holes spaced apart along the length of the positioning arm; The rotating arm has a third through hole; The tire removal hook assembly also includes: The third limiting pin passes through the third through hole and is inserted into the third limiting hole that corresponds to the third through hole among the plurality of third limiting holes.

8. The tire mounting / removing hook assembly according to any one of claims 2 to 7, characterized in that, Also includes: A sliding plate is located on the outer side of the column of the tire changer and can slide up and down along the column; The rotating arm is rotatably mounted on the slide plate about an axis extending in the vertical direction.

9. The tire mounting / removing hook assembly according to claim 8, characterized in that, Also includes: A locking mechanism is used to lock the rotating arm in a working position close to the slide plate.

10. A tire changing and mounting machine, characterized in that, Includes the tire mounting hook assembly as described in any one of claims 1 to 9.

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