Tire dismounting head

Abstract

The utility model provides a kind of tire dismounting head, belong to tire dismounting technical field;Including: hexagonal lever, the surface of hexagonal lever is slidably equipped with slide arm, the side of slide arm is fixedly installed with fixed arm, the side of fixed arm away from slide arm is fixedly installed on tire dismounting machine;Cylinder plate is fixedly installed on the lateral wall of slide arm, the top of cylinder plate is fixedly installed with locking cylinder, the outer wall of hexagonal lever is fixedly equipped with locking plate, the output end of locking cylinder is fixedly connected with locking plate.The tire dismounting head, locking plate is pushed by locking cylinder, slide arm moves on hexagonal lever, to control bird head lifting in this way, bird head can be stably supported on wheel hub, avoid when disassembling tire, bird head and dismounting hook occur to sway;Piston rod end of locking cylinder and locking plate are connected by floating joint, can effectively compensate installation error and angular deviation in working process, ensure that locking force is evenly transmitted to locking plate.

Description

Technical Field

[0001] This utility model belongs to the field of tire disassembly and assembly technology, and specifically relates to a tire disassembly and assembly head. Background Technology

[0002] Tire loading and unloading technology originated in the early 20th century. In 1924, the world's first tire loading and unloading machine was invented in Italy, marking the beginning of mechanized operation. Early equipment relied on manual or pneumatic control, which was complex and labor-intensive. For example, fixing tires with locking nuts and jaws was inefficient. After the 1980s, automation technology was gradually introduced, such as the application of hydraulic telescopic rods, servo motors, and intelligent control panels, which enabled rapid locking and precise positioning of tires, significantly improving loading and unloading efficiency and reducing manual intervention. With the development of the automotive industry, the diversification of tire sizes and materials has placed higher demands on loading and unloading technology, driving the emergence of fully automated axle-type equipment.

[0003] Chinese patent, publication number CN202345284U, discloses a pneumatic tire changer head. Power is provided by a cylinder to drive an axial movement downwards, causing the upper end of the active pull rod to move downwards along a slide rail on the surface of the housing. An S-shaped crank rod, constrained by a baffle at the bottom of the housing and a groove on the housing surface, moves towards an opening on the side of the housing. The active and driven support rods rotate around a hinge axis, causing the S-shaped crank rod's hook to slide into the gap between the tire bead and the rim, thus securing the tire bead.

[0004] However, most existing tire changers involve pulling a connecting rod to press the changer directly onto the tire, and then fixing the position of the connecting rod with a locking button. Although this method is convenient, the manual locking can easily lead to poor locking, resulting in poor contact between the changer and the wheel rim and causing wobbling. If the changer shakes significantly during the disassembly process, it can easily damage the tire or the machine. Utility Model Content

[0005] To address the problem of poor movement stability of the tire changing head in the prior art, this utility model provides a tire changing head that uses a locking cylinder combined with a locking plate to achieve stable movement. The specific technical solution is as follows: A tire changing head includes a hexagonal lever, on the surface of which a sliding arm is slidably mounted. A fixed arm is fixedly mounted on one side of the sliding arm, and the side of the fixed arm away from the sliding arm is fixedly mounted on a tire changing machine. A cylinder plate is fixedly mounted on the side wall of the sliding arm, and a locking cylinder is fixedly mounted on the top of the cylinder plate. A locking plate is fixedly mounted on the outer wall of the hexagonal lever, and the output end of the locking cylinder is fixedly connected to the locking plate.

[0006] Preferably, a fixing plate is fixedly installed on the top of the hexagonal bar, and a bird head is fixedly installed on the bottom of the hexagonal bar; a cylinder is hinged to the bottom of the fixing plate, an output rod is connected to the bottom of the cylinder, a disassembly hook is connected to the bottom of the output rod, and the disassembly hook is rotatably connected to the bird head.

[0007] Preferably, a mounting groove is provided on one side of the bird head, and a connecting shaft and a first connecting rod are rotatably connected in the mounting groove. The top of the disassembly hook is rotatably mounted on the connecting shaft, and the end of the first connecting rod away from the mounting groove is rotatably connected to the disassembly hook.

[0008] Preferably, a connecting seat is installed on the outer wall of the disassembly hook, and a second connecting rod is rotatably connected inside the connecting seat. The top of the second connecting rod is rotatably connected to the output rod.

[0009] Preferably, a baffle is installed at the bottom of the bird's head.

[0010] Preferably, a valve cover is fixedly installed at the bottom of the cylinder, and a valve cover handle is fixedly installed on the surface of the valve cover.

[0011] Preferably, a handle is fixedly installed on the side of the sliding arm opposite to the fixed arm.

[0012] In addition, the tire mounting head in the above-mentioned technical solution provided by this utility model may also have the following features: a reinforcing angle is installed between the sliding arm and the fixed arm.

[0013] The tire mounting head of this utility model has the following advantages compared with the prior art:

[0014] 1. This tire removal and installation head uses a locking cylinder to push a locking plate, which moves the sliding arm on the hexagonal bar to control the raising and lowering of the bird head. This allows the bird head to be stably supported on the wheel hub, preventing additional shaking of the bird head and the removal hook when removing the tire.

[0015] 2. The piston rod end of the locking cylinder of this tire mounting head is threadedly connected to the locking plate, which can effectively compensate for installation errors and angular deviations during operation, ensuring that the locking force is evenly transmitted to the locking plate; the inner side of the locking plate is provided with a wear-resistant rubber layer, which can increase the friction and improve the locking reliability when locking with the hexagonal bar, and avoid rigid contact causing wear to the surface of the hexagonal bar;

[0016] 3. The tire removal and installation head features a bird-head design with an arc-shaped surface that perfectly matches the contour of the wheel hub, creating multi-point contact support during installation and removal, further enhancing stability during operation. The removal and installation hook is forged from a single piece of high-strength alloy material, and its hook head undergoes a special heat treatment process to effectively resist frictional wear between the tire bead and the wheel hub, extending the service life of the components. Simultaneously, the bird-head and removal and installation hook achieve mechanical docking with the sliding arm via a quick-change connection structure. Combined with built-in positioning pins and clips, the replacement of individual components can be completed in a short time, significantly reducing equipment downtime caused by component wear or damage. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the tire mounting head provided by this utility model;

[0018] Figure 2 A side view of the tire mounting head provided by this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A;

[0020] Figure 4 A schematic diagram of the installation structure of the disassembly hook provided by this utility model;

[0021] Figure 5 A schematic diagram of the disassembly hook provided by this utility model;

[0022] Figure 6 A schematic diagram of the bird's head provided by this utility model;

[0023] in, Figures 1 to 6 The reference numerals and component names in the attached drawings are as follows: 1. Hexagonal lever, 2. Fixing plate, 3. Cylinder, 4. Output rod, 5. Bird head, 6. Disassembly hook, 7. Sliding arm, 8. Fixing arm, 9. Valve box cover, 10. Valve box cover handle, 11. Handle, 12. Connecting seat, 13. Connecting shaft, 14. First connecting rod, 15. Second connecting rod, 16. Reinforcing angle, 17. Cylinder plate, 18. Locking cylinder, 19. Locking plate, 20. Baffle, 21. Mounting slot. Detailed Implementation

[0024] The following are specific implementation cases and appendices. Figures 1-6The present invention will be further described below, but it is not limited to these embodiments. The present invention provides a technical solution: a tire changer head, comprising: a hexagonal lever 1, a sliding arm 7 slidably mounted on the surface of the hexagonal lever 1, a fixed arm 8 fixedly mounted on one side of the sliding arm 7, and the side of the fixed arm 8 away from the sliding arm 7 fixedly mounted on a tire changer machine by bolts; a cylinder plate 17 welded to the side wall of the sliding arm 7, a locking cylinder 18 fixedly mounted on the top of the cylinder plate 17 by bolts, a locking plate 19 fixedly mounted on the outer wall of the hexagonal lever 1, the output end of the locking cylinder 18 fixedly connected to the locking plate 19, and the piston rod end of the locking cylinder 18 threadedly connected to the locking plate 19, which can effectively compensate for installation errors and angular deviations during operation, and ensure that the locking force is evenly transmitted to the locking plate 19; the inner side of the locking plate 19 is provided with a wear-resistant rubber layer, which can increase friction and improve locking reliability when locking with the hexagonal lever 1, and avoid wear on the surface of the hexagonal lever caused by rigid contact.

[0025] As a preferred option, a further step is to install a fixing plate 2 on the top of the hexagonal lever 1 and a bird head 5 on the bottom of the hexagonal lever 1. A cylinder 3 is hinged to the bottom of the fixing plate 2, and an output rod 4 is connected to the bottom of the cylinder 3. A disassembly hook 6 is connected to the bottom of the output rod 4 and is rotatably connected to the bird head 5. The arc-shaped curved surface design of the bird head 5 is highly compatible with the contour of the wheel hub edge, which can form multi-point contact support during disassembly and assembly, further improving the stability during operation. The disassembly hook 6 is made of high-strength alloy material and is forged in one piece. Its hook head part is processed by a special heat treatment process, and the hardness reaches HRC55-60, which can effectively resist the frictional wear between the tire bead and the wheel hub and extend the service life of the parts. At the same time, the bird head 5 and the disassembly hook 6 are mechanically connected to the sliding arm 7 through a quick-change connection structure. With the help of the built-in positioning pin and buckle device, the replacement operation of a single part can be completed in a short time, which greatly reduces the equipment downtime caused by part wear or damage.

[0026] As a preferred option, a further step is to provide a mounting groove 21 on one side of the bird head 5. A connecting shaft 13 and a first connecting rod 14 are rotatably connected in the mounting groove 21. The top of the disassembly hook 6 is rotatably mounted on the connecting shaft 13, and the end of the first connecting rod 14 away from the mounting groove 21 is rotatably connected to the disassembly hook 6.

[0027] As a preferred option, a connecting seat 12 is installed on the outer wall of the disassembly hook 6. A second connecting rod 15 is rotatably connected inside the connecting seat 12. The top of the second connecting rod 15 is rotatably connected to the output rod 4. During specific assembly, the connecting shaft 13 is axially fixed to the inner wall of the mounting groove 21 through an interference fit. Self-lubricating bearings are respectively fitted at both ends to ensure that the frictional torque of the disassembly hook 6 rotating around the connecting shaft 13 is no greater than 0.5 N·m, ensuring sensitive action response. The connection node between the first connecting rod 14 and the disassembly hook 6 is located at 1 / 3 of the length of the disassembly hook 6. This design can amplify the driving force output by the cylinder 3 by 1.8 times through the lever principle, significantly improving the hooking force of the disassembly hook 6 on the tire bead. Both ends of the second connecting rod 15 are hinged to the connecting seat 12 and the output rod 4 using fisheye bearings. Its swing angle range is -30° to +45°, which can adapt to the angle change of the output rod 4 during the extension and retraction process and avoid motion interference.

[0028] As a preferred option, the bottom of the bird head 5 is further equipped with a baffle 20. The baffle 20 is made of polyoxymethylene injection molding material and its lower surface is provided with a wave-shaped anti-slip texture. When the bird head 5 comes into contact with the wheel hub, it can increase the contact friction and buffer the impact, preventing the wheel hub surface from being scratched due to rigid collision during operation.

[0029] As a preferred option, a valve cover 9 is fixedly installed at the bottom of the cylinder 3, and a valve cover handle 10 is fixedly installed on the surface of the valve cover 9. The valve cover 9 is formed by die casting of aluminum alloy, with uniform wall thickness and an overall weight controlled within 300g, which ensures structural strength and reduces non-working load. It integrates a solenoid valve group and a pressure sensor, which can monitor the working pressure of the cylinder 3 in real time. When the pressure exceeds 0.8MPa, it automatically triggers overflow protection to prevent overload damage to components due to excessive air pressure. The surface of the valve cover handle 10 is covered with thermoplastic elastomer material, which provides a comfortable non-slip grip and has temperature resistance to adapt to temperature changes in different working environments.

[0030] As a preferred option, a handle 11 is further fixedly installed on one side of the sliding arm 7 opposite to the fixed arm 8. The gripping part of the handle 11 is designed with an ergonomic arc structure that matches the average grip size of the palm. The surface is frosted, increasing the coefficient of friction to 0.6, which can effectively prevent the hand from slipping during operation.

[0031] As a preferred option, a reinforcing angle 16 is installed between the sliding arm 7 and the fixed arm 8. The reinforcing angle 16 is made of Q235 steel and is stamped with a right-angled triangular cross-section. Its two right-angled sides are connected to the sliding arm 7 and the fixed arm 8 respectively by welding. The weld length is not less than 2 / 3 of the side length of the reinforcing angle 16. After welding, stress-relieving annealing is performed to ensure that the hardness of the welded area is not lower than HB180. This increases the connection strength between the sliding arm 7 and the fixed arm 8 by more than 40%, effectively resisting the torque and bending moment generated during operation. In actual assembly, the reinforcing angle 16 is installed below the stress center point of the connection node between the sliding arm 7 and the fixed arm 8. This arrangement allows for a more uniform stress distribution.

[0032] The cylinder and locking cylinder in this case are existing technologies, and any cylinder and locking cylinder that meet the requirements of this case is acceptable.

[0033] The specific types or circuit structures of the controllers for the electrical components mentioned in this application, as well as the circuit connection relationships between the electrical components and the accurate coordinated control of multiple power components, are all prior art. Therefore, the above content will not be elaborated upon in this application.

[0034] Working principle: The electrical components mentioned in this application are all connected to an external power supply and control switch during use. After the utility model is installed, first check the installation, fixation, and safety protection of the utility model, and then it can be used. When removing the tire, the user uses the tire pressing shovel to initially separate the tire from the steel rim stop. After separation, the user places the tire on the chuck and fixes the wheel hub with the chuck. After the wheel hub is fixed, the locking cylinder 18 is activated, which pushes the locking plate 19, causing the hexagonal lever 1 and the sliding arm 7 to slide relative to each other, thereby pressing the bird head 5 onto the wheel hub and inserting the removal hook 6 into the tire. Then, the cylinder 3 is activated, which drives the output rod 4 to move. The output rod 4 drives the removal hook 6 to rotate through the second connecting rod 15, thereby separating the tire from the wheel hub. The removal machine is then activated to rotate the chuck, so that the tire is completely separated from the wheel hub.

[0035] When installing a tire, first put the tire on the rim, then activate the locking cylinder 18 to lower the bird head 5 to the edge of the rim, rotate the chuck so that the bottom of the tire is completely covered by the locking action of the bird head 5 on the rim surface; then use the bird head 5 to press down one side of the top of the tire, and rotate the chuck during the pressing process to drive the rim to rotate, so that the tire can be completely covered by the rim.

[0036] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire mounting / removing head, comprising: A hexagonal lever (1) is characterized in that a sliding arm (7) is slidably fitted on the surface of the hexagonal lever (1), a fixed arm (8) is fixedly installed on one side of the sliding arm (7), and the side of the fixed arm (8) away from the sliding arm (7) is fixedly installed on a tire changer; a cylinder plate (17) is fixedly installed on the side wall of the sliding arm (7), a locking cylinder (18) is fixedly installed on the top of the cylinder plate (17), a locking plate (19) is fixedly fitted on the outer wall of the hexagonal lever (1), and the output end of the locking cylinder (18) is fixedly connected to the locking plate (19).

2. The tire mounting head according to claim 1, characterized in that, A fixing plate (2) is fixedly installed on the top of the hexagonal bar (1), and a bird head (5) is fixedly installed on the bottom of the hexagonal bar (1); a cylinder (3) is hinged to the bottom of the fixing plate (2), an output rod (4) is connected to the bottom of the cylinder (3), and a disassembly hook (6) is connected to the bottom of the output rod (4), and the disassembly hook (6) is rotatably connected to the bird head (5).

3. The tire mounting head according to claim 2, characterized in that, The bird head (5) has an installation groove (21) on one side. A connecting shaft (13) and a first connecting rod (14) are rotatably connected in the installation groove (21). The top of the disassembly hook (6) is rotatably fitted on the connecting shaft (13). The end of the first connecting rod (14) away from the installation groove (21) is rotatably connected to the disassembly hook (6).

4. The tire mounting head according to claim 2, characterized in that, A connecting seat (12) is installed on the outer wall of the disassembly hook (6). A second connecting rod (15) is rotatably connected inside the connecting seat (12). The top of the second connecting rod (15) is rotatably connected to the output rod (4).

5. The tire mounting head according to claim 2, characterized in that, A baffle (20) is installed at the bottom of the bird head (5).

6. The tire mounting head according to claim 1, characterized in that, A valve cover (9) is fixedly installed at the bottom of the cylinder (3), and a valve cover handle (10) is fixedly installed on the surface of the valve cover (9).

7. The tire mounting head according to claim 1, characterized in that, A handle (11) is fixedly installed on the side of the sliding arm (7) opposite to the fixed arm (8).

8. The tire mounting head according to claim 1, characterized in that, A reinforcing angle (16) is installed between the sliding arm (7) and the fixed arm (8).

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