A tire expander

Abstract

The application relates to the technical field of tire expander, and proposes a tire expander which can be matched with a vacuum tire to form an auxiliary tire expanding operation, the tire expanding operation is realized in a gas pressure driving mode, the operation is more labor-saving, the forms of hub positioning are more various, the tire expanding operation is more convenient, and the practicability is stronger, the tire expander comprises a sliding seat, a main body component and a mounting component, the main body component comprises a rotating seat, the rotating seat is rotationally connected with the sliding seat, a gas cylinder is mounted in the rotating seat through an adjusting assembly, a claw piece is mounted on a driving rod of the gas cylinder, a back pushing frame is fixedly connected with the rotating seat, an adjusting insertion hole is formed in the back pushing frame, the mounting component comprises multiple side supporting frames, the multiple side supporting frames are slidably connected with the sliding seat, the rotating seat is connected with a mounting island frame, a vertical mounting driving piece is mounted in the mounting island frame, the vertical mounting driving piece is used for synchronously slidingly driving the multiple side supporting frames relative to the sliding seat, a side ring piece is fixedly connected with the bottom end of the rotating seat, and the side ring piece is fixedly connected with a mounting ring.

Description

Technical Field

[0001] This invention relates to the field of tire expander technology, and specifically to a tire expander. Background Technology

[0002] As is well known, a tire expander is a tool used for auxiliary repair of tubeless tires on vehicles such as cars or motorcycles. Since the sealing of tubeless tires depends on the tight fit between the tire bead and the rim, and it is difficult to open them by traditional manual methods, the main function of a tire expander is to open the tire edge without removing the tire so that tire repair, grinding or replacement operations can be performed.

[0003] A search revealed Chinese patent application CN202020461322.7, which discloses a tire expander. The general description includes a rack, a sliding seat, and a drive rod. The sliding seat is fitted onto the rack, and a gear is pivotally connected to the sliding seat, meshing with the teeth on the rack. The drive rod is coaxially pivotally connected to the gear on the sliding seat. A locking block and a drive block are located at the outer edge of the gear. The locking block is pivotally connected to the sliding seat, and the drive block is pivotally connected to the drive rod. Torsion springs are fitted onto the pivots of both the locking block and the drive block, and the torsion springs cause the locking... The locking head of the block is locked onto the teeth of the gear to prevent the gear from reversing. At the same time, the torsion spring causes the drive head of the drive block to abut against the outer edge of the gear. The drive rod drives the drive block to drive the gear to rotate. In use, by swinging the drive rod, the drive rod drives the gear to rotate through the drive block, thereby moving the sliding seat and realizing the function of expanding or clamping the tire. To reset, simply tilt the drive rod towards the locking block and move the locking block to disengage the locking head from the gear. At this time, the gear can rotate freely on the rack. Pulling the drive rod can easily reset the sliding seat.

[0004] While the aforementioned existing technical solutions can assist in tire expansion, the entire operation requires manual force to swing the drive lever, which is quite laborious. When multiple parts of the tire need to be expanded sequentially, manual adjustment and repeated swinging of the drive lever are required. Therefore, the ease of operation of this technical solution still has room for improvement, and its overall practicality also needs to be further enhanced. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a tire expander that can be used with tubeless tires to assist in tire expansion operations. The expansion action is achieved through pneumatic drive, making operation more labor-saving. Compared to wheel hub positioning, it offers more diverse forms, makes tire expansion operations more convenient, and is more practical.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tire expander, comprising a sliding seat, a main body component, and an mounting component. The main body component includes a rotating seat, which is rotatably connected to the sliding seat. A cylinder is mounted inside the rotating seat via an adjustment assembly. A claw is mounted on the drive rod of the cylinder. A back-pushing frame is fixedly connected to the rotating seat. An adjustment socket is provided on the back-pushing frame. The mounting component includes multiple side-supporting frames, all of which are slidably connected to the sliding seat. A mounting island is connected to the rotating seat. A vertical drive component is mounted inside the mounting island. The vertical drive component is used for the synchronous sliding drive of the multiple side-supporting frames relative to the sliding seat.

[0007] Based on the aforementioned scheme, a side ring is fixedly connected to the bottom end of the rotating seat, and a mounting ring is fixedly connected to the side ring. An annular outer groove is provided on the outside of the mounting island frame. Both the side ring and the mounting ring are provided with an inner half-ring that matches the annular outer groove. The sliding seat includes multiple split frames. Two adjacent split frames are fixedly connected by multiple assembly bolts. A sliding groove matching the side support frame is provided between two adjacent split frames. An annular inner groove is provided in each split frame. Both the side ring and the mounting ring are provided with an outer half-ring that matches the annular inner groove.

[0008] Based on the aforementioned scheme, the adjustment assembly includes a rotating frame and a side-mounted drive component. The rotating frame is rotatably connected to the rotating seat, the cylinder is installed in the rotating frame, the side-mounted drive component is installed at the bottom end of the mounting ring, and a transverse shaft is fixedly connected to the drive rod of the side-mounted drive component. The rotating frame is provided with two side grooves, and the two side grooves are respectively connected to the two ends of the transverse shaft.

[0009] Based on the aforementioned scheme, an insertion post is inserted into each of the two side slots, and an insertion ridge groove is opened at both ends of the transverse shaft. An insertion rod is fixedly connected to the end of each of the two insertion posts that is close to each other. The two insertion rods are respectively matched with the two insertion ridge grooves. Two insertion pins are threadedly connected to the transverse shaft. The two insertion rods are each opened with a pin groove, and the two pin grooves are respectively matched with the two insertion pins.

[0010] Based on the aforementioned scheme, the bottom end of the drive rod of the vertical drive component is fixedly connected to a synchronous frame, the synchronous frame is hinged to multiple transmission rods, each of the multiple transmission rods is rotatably connected to a transmission block, the multiple transmission blocks are respectively fixedly connected to the bottom end of multiple side support frames, and each of the multiple split frames is provided with a first passage and a second passage. The multiple first passages are respectively used for the passage of multiple transmission blocks, and the multiple second passages are also respectively used for the passage of multiple transmission blocks.

[0011] Based on the aforementioned scheme, each of the multiple side support tensioning frames is rotatably connected to an inner support contact block, each of the multiple inner support contact blocks is provided with an outer contact arc surface, each of the multiple outer contact arc surfaces is provided with a drop limiting block, and each of the multiple drop limiting blocks is provided with an inner plane and an outer slope surface at its bottom.

[0012] Based on the aforementioned scheme, each of the multiple side support frames is slidably connected to an alignment frame, each of the multiple alignment frames is provided with two alignment points, each of the multiple alignment frames is fixedly connected with two conical springs, each of the multiple side support frames has two storage installation slots, each of the multiple conical springs is fixedly connected in the multiple storage installation slots, each of the multiple inner support contact blocks has two alignment grooves, and each of the multiple alignment grooves is matched with the multiple alignment points.

[0013] Based on the aforementioned scheme, a mounting sheet metal frame is fixedly connected to the rotating seat, and a control valve group is installed inside the mounting sheet metal frame. The control valve group is used for the operation control of the cylinder, the side-mounted drive component, and the vertically mounted drive component.

[0014] Based on the aforementioned solution, a handle frame is fixedly connected to the mounting sheet metal frame, and two structural reinforcing rods are fixedly connected inside the handle frame. Both structural reinforcing rods are fixedly connected to the mounting sheet metal frame.

[0015] Based on the aforementioned scheme, the bottom of the claw blade is provided with an extended shovel hook head, and the top of the claw blade is provided with a limiting protrusion.

[0016] Compared with the prior art, the present invention provides a tire expander with the following advantages:

[0017] (1). In this invention, the main components are designed to form a power actuator for tire expansion operation. Gas is used as the driving force to drive the claw plate to move, which effectively frees the operator's hands and makes the operation more labor-saving.

[0018] (2). In this invention, the design of the mounting components, together with the sliding seat, forms a functional part for positioning relative to the inner support of the wheel hub. Compared with the existing positioning method for the outer tubeless tire of the wheel hub, its positioning form is more diverse and its practicality is better.

[0019] (3). In this invention, the design of the sliding seat forms a connection and coupling between the main body component and the mounting component, which facilitates the matching application of the main body component and the mounting component, and makes the integrity and compactness of the overall structure better.

[0020] (4). In this invention, by adjusting the design of the components, the posture of the cylinder relative to the wheel hub can be flexibly adjusted, thereby expanding the movement pattern of the claw and effectively enriching the functional dimensions of the tire expander. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0022] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0023] Figure 3 This is a three-dimensional structural diagram of the rotating seat, back push frame, and mounting sheet metal frame of the present invention.

[0024] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at point B;

[0025] Figure 5 This is a three-dimensional structural diagram of the cylinder, claw, and rotating frame of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the rotating frame of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram showing the assembly of the edge ring, mounting ring, and transverse shaft of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the disassembled sliding seat of the present invention;

[0029] Figure 9 This is a three-dimensional structural diagram of the invention viewed from below.

[0030] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at point C in the middle;

[0031] Figure 11 For the present invention Figure 9 A magnified schematic diagram of the local structure at point D;

[0032] Figure 12 This is a bottom-view three-dimensional structural diagram of the installation of the island frame, vertical drive unit, and synchronization frame of the present invention.

[0033] Figure 13 This is a bottom-view three-dimensional structural diagram showing the interaction of the rotating base, vertical drive component, and side ring component of the present invention.

[0034] Figure 14 This is a three-dimensional structural diagram showing the assembly of the internal support contact block, alignment frame, and cone spring of the present invention.

[0035] Figure 15 This is a three-dimensional structural diagram of the internal support contact block, alignment frame, and cone spring of the present invention, taken from another angle.

[0036] In the diagram: 1. Rotating seat; 2. Cylinder; 3. Claw plate; 4. Back push frame; 5. Adjustment socket; 6. Side support frame; 7. Mounting island frame; 8. Vertical drive component; 9. Side ring component; 10. Mounting ring; 11. Annular outer groove; 12. Inner half ring; 13. Split frame; 14. Assembly bolt; 15. Sliding groove; 16. Annular inner groove; 17. Outer half ring; 18. Rotating frame; 19. Side drive component; 20. Transverse shaft; 21. Side strip groove; 22. Insertion column; 23. Insertion rib groove; 24. Insertion rod; 2 5. Insert pin; 26. Pin slot; 27. Synchronizing frame; 28. Transmission rod; 29. ​​Transmission block; 30. First passageway; 31. Second passageway; 32. Inner support contact block; 33. Outer contact arc surface; 34. Drop limit block; 35. Inner plane; 36. Outer slope surface; 37. Alignment frame; 38. Alignment point; 39. Conical spring; 40. Alignment groove; 41. Mounting sheet metal frame; 42. Control valve assembly; 43. Handle frame; 44. Structural reinforcing rod; 45. Outwardly extending shovel hook; 46. Limiting protrusion. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] For examples, please refer to Figures 1-15A tire expander includes a sliding seat, a main body component, and an mounting component. The main body component includes a rotating seat 1, which is rotatably connected to the sliding seat. A cylinder 2 is mounted inside the rotating seat 1 via an adjusting assembly. The adjusting assembly includes a rotating frame 18 and a side-mounted drive component 19. The rotating frame 18 is rotatably connected inside the rotating seat 1, and the cylinder 2 is mounted inside the rotating frame 18. The side-mounted drive component 19 is mounted at the bottom end of a mounting ring 10. A transverse shaft 20 is fixedly connected to the drive rod of the side-mounted drive component 19. The rotating frame 18 has two side grooves 21, which are respectively connected to the two ends of the transverse shaft 20. An insertion post 22 is inserted into each of the two side grooves 21. Insertion slots 23 are provided at both ends of the transverse shaft 20. Insertion rods 24 are fixedly connected to the ends of the two insertion posts 22 that are close to each other. The two insertion rods 24 are respectively matched with the two insertion slots 23. The transverse shaft 20 is threaded. There are two insertion pins 25 and two insertion rods 24, each with a pin groove 26. The two pin grooves 26 are matched with the two insertion pins 25 respectively. Through the design of the adjustment component, the posture of the cylinder 2 relative to the wheel hub can be flexibly adjusted, thereby expanding the movement form of the claw 3 and effectively enriching the functional dimensions of the tire expander. The claw 3 is installed on the drive rod of the cylinder 2. The bottom of the claw 3 is provided with an extended shovel hook head 45, and the top of the claw 3 is provided with a limiting protrusion head 46. Through the design of the main components, a power execution mechanism for tire expansion operation is formed. Gas is used as the driving force to drive the claw 3 to move, effectively freeing the operator's hands and making the operation more labor-saving. The rotating seat 1 is fixedly connected to the back push frame 4. The back push frame 4 is provided with an adjustment socket 5. By inserting a rod into the adjustment socket 5 and inserting the rod relative to the mounting hole on the wheel hub, the auxiliary support and limit of the rotating seat 1 relative to the wheel hub can be realized.

[0039] It should be further explained that the mounting components include multiple side support brackets 6, all of which are slidably connected to the sliding seat. The rotating seat 1 is connected to a mounting island 7, and a vertical drive component 8 is installed inside the mounting island 7. The vertical drive component 8 is used for the synchronous sliding drive of the multiple side support brackets 6 relative to the sliding seat. The bottom end of the drive rod of the vertical drive component 8 is fixedly connected to a synchronous frame 27. The synchronous frame 27 is hinged to multiple transmission rods 28, and each of the multiple transmission rods 28 is rotatably connected to a transmission block 29. The multiple transmission blocks 29 are respectively fixedly connected to the bottom ends of the multiple side support brackets 6. The multiple split frames 13 are each provided with a first passage 30 and a second passage 31. The multiple first passages 30 are respectively used for the passage of the multiple transmission blocks 29, and the multiple second passages 31 are respectively used for the passage of the multiple transmission blocks 29. The two through ports 31 are also used for the passage of multiple transmission blocks 29. Through the design of the mounting components, in conjunction with the sliding seat, a functional part for positioning relative to the inner support of the wheel hub is formed. Compared with the existing positioning method for the outer tubeless tire of the wheel hub, its positioning form is more abundant and its practicality is better. The bottom end of the rotating seat 1 is fixedly connected to the side ring 9, and the side ring 9 is fixedly connected to the mounting ring 10. The outer ring groove 11 is provided on the outside of the mounting island 7. Both the side ring 9 and the mounting ring 10 are provided with inner half rings 12 that match the outer ring groove 11. The sliding seat includes multiple split frames 13. Two adjacent split frames 13 are fixedly connected by multiple mounting bolts 14. A sliding groove 15 that matches the side support tensioning frame 6 is provided between two adjacent split frames 13. Each split frame 13 has an annular inner groove 16, and the side ring 9 and mounting ring 10 each have an outer half-ring 17 that matches the annular inner groove 16. Through the design of the sliding seat, a connection and coupling are formed between the main body component and the mounting component, which facilitates the matching application of the main body component and the mounting component, and makes the integrity and compactness of the overall structure better. Multiple side support frames 6 are rotatably connected to inner support contact blocks 32. Multiple inner support contact blocks 32 are provided with outer contact arc surfaces 33. Multiple outer contact arc surfaces 33 are provided with drop limit blocks 34. The bottom of multiple drop limit blocks 34 is provided with an inner plane 35 and an outer slope surface 36. Multiple side support frames 6 are slidably connected to alignment frames 37. Multiple alignment frames 37 are provided with two alignment points. 38. Multiple alignment frames 37 are each fixedly connected to two conical springs 39. Multiple side support frames 6 are each provided with two storage and installation slots. Multiple conical springs 39 are respectively fixedly connected in multiple storage and installation slots. Multiple inner support contact blocks 32 are each provided with two alignment slots 40. Multiple alignment slots 40 are respectively matched with multiple alignment points 38. A mounting sheet metal frame 41 is fixedly connected to the rotating seat 1. A control valve group 42 is installed in the mounting sheet metal frame 41. The control valve group 42 is used for the operation control of cylinder 2, side-mounted drive component 19 and vertical drive component 8. A handle frame 43 is fixedly connected to the mounting sheet metal frame 41. Two structural reinforcing rods 44 are fixedly connected in the handle frame 43. Both structural reinforcing rods 44 are fixedly connected to the mounting sheet metal frame 41.

[0040] In this embodiment, the cylinder 2, vertical drive component 8, side drive component 19, and control valve group 42 are all commercially available conventional devices known to those skilled in the art. The vertical drive component 8 and side drive component 19 both adopt the structure of pneumatic cylinders and share the same air pressure supply system with the cylinder 2. They are independently controlled by the control valve group 42. In this invention, we only use them without modifying their structure and function. Their setting method, installation method, and air circuit connection method can be easily explained by those skilled in the art by following the instructions for use. Therefore, they will not be described in detail here.

[0041] In summary, the working principle of this tire expander is as follows: before it is put into formal use, the basic air circuit construction work needs to be completed. First, the external air pressure supply equipment, such as the external air pump, is connected to the control valve group 42 inside the mounting sheet metal frame 41. The control valve group 42 is used to construct independent control air circuits with the cylinder 2, the vertical drive component 8, and the side drive component 19 respectively. After the air pump is running, it can pump compressed air into each air circuit. The control valve group 42, as the core control hub, can control the cylinder 2 by switching between different control levels. Precise control of the telescopic and vertical drive component 8 (lifting and lowering), and the side-mounted drive component 19 (telescopic and retracting) provides stable power support for subsequent actions. Once the air circuit is completed, it is ready for use. The operator first places the sliding seat against the wheel hub, then activates the vertical drive component 8 via the control valve group 42. The drive rod of the vertical drive component 8 moves upward, causing the synchronous frame 27 to move upward synchronously. The synchronous frame 27, through multiple hinged transmission rods 28, pushes the corresponding transmission blocks 29 to move. Because the transmission blocks 29 are connected to the bottom end of the side support frame 6... The side support bracket 6 is fixedly connected, and the sliding guide is formed by the sliding groove 15 of the sliding seat. Therefore, the multiple transmission blocks 29 will drive the multiple side support brackets 6 to slide along the sliding groove 15 in a direction away from the center of the sliding seat until the outer contact arc surface 33 of the inner support contact block 32 on each side support bracket 6 is tightly fitted with the inner side wall of the wheel hub. At this time, the drop limit block 34 on the inner support contact block 32 forms a stable support with the end face of the wheel hub through the inner plane 35. The setting of the outer slope surface 36 can make the drop limit block 34 move relative to the end face of the wheel hub. The movement process forms a guide, which can avoid jamming when contacting the wheel hub. Under the elastic action of the cone spring 39, the alignment frame 37 on the side support tensioning frame 6 has its alignment point 38 embedded in the alignment groove 40 of the inner support contact block 32, realizing the attitude locking of the inner support contact block 32 and preventing deflection during operation. After the above operation is completed, the overall tire expander equipment can be stably positioned relative to the wheel hub through the synchronous outward expansion support of multiple side support tensioning frames 6, providing a reliable reference fixation for subsequent tire expansion operations.

[0042] After positioning, the side-mounted drive unit 19 can be activated via the control valve group 42 according to the tire expansion requirements. After the side-mounted drive unit 19 is activated, its drive rod extends and retracts, causing the transverse shaft 20 to move synchronously. Since the two ends of the transverse shaft 20 are engaged with the side grooves 21 of the rotating frame 18 through the insertion rods 24, and the insertion rods 24 are fixed and limited to the transverse shaft 20 through the insertion pins 25, the linear movement of the transverse shaft 20 will be converted into a pushing or pulling force on the rotating frame 18, causing the rotating frame 18 to rotate around itself within the rotating seat 1. The shaft rotates for adjustment, while cylinder 2 is fixedly installed inside the rotating frame 18. This causes cylinder 2 to rotate around the rotating connection point of the rotating seat 1 to adjust its angle until the claw 3 at the front end of the cylinder 2 drive rod aligns with the edge of the tire to be expanded. During this process, cylinder 2 rotates and falls with the rotating frame 18, causing the extended hook head 45 at the bottom of the claw 3 to press down on the contact area between the tubeless tire bead and the rim. This separates the original annular part of the tubeless tire from the rim, reducing the damage caused by long-term compression at the contact point between the tubeless tire and the rim. To ensure proper adhesion, the extended hook head 45 is inserted relative to the tubeless tire. After the aforementioned adjustments, the cylinder 2 is controlled to move, causing the extended hook head 45 at the bottom of the claw 3 to engage with the gap between the tire edge and the rim. The claw 3 is then adjusted to hook onto the inner ring area of ​​the tubeless tire. The tire widening operation can then begin. The control valve assembly 42 controls the extension of the cylinder 2's drive rod, which moves the claw 3 towards the tire edge. As the cylinder 2's drive rod continues to extend, the extended hook head 45 pushes the tire edge towards... The outer side is spread out, and the limiting protrusion 46 at the top of the claw 3 can prevent the tire from slipping off the claw 3, so as to ensure safe and efficient tire expansion operation. If multiple parts of the tire need to be expanded in sequence, there is no need to repeatedly disassemble the positioning structure. Just control the cylinder 2 drive rod to retract through the control valve group 42, so that the claw 3 is separated from the current expansion part. Manually push the rotating seat 1 to rotate around the sliding seat. The rotation of the rotating seat 1 can drive the cylinder 2 and the claw 3 to rotate to the next part to be expanded. Repeat the above operation of the cylinder 2 extending to expand the tire.

[0043] After all tire expansion operations are completed, the control valve group 42 sequentially controls the cylinder 2 drive rod to retract and reset, and the side-mounted drive component 19 to extend and reset, thereby driving the rotating frame 18 and cylinder 2 back to their initial positions. Then, the vertical drive component 8 drive rod is controlled to move downward, causing the synchronous frame 27 to move downward and, through the transmission rod 28, pull each transmission block 29 to drive the side support frame 6 to slide towards the center of the sliding seat, causing the inner support contact block 32 to disengage from the inner wall of the wheel hub, releasing the tire expander from the wheel hub's positioning and fixing. Finally, the operator can lift the entire tire expander off the wheel hub using the handle 43. The tire expander is removed, completing a full tire expansion operation. Throughout the process, pneumatic drive replaces the traditional manual swing drive, significantly reducing the labor intensity of the operator. The synchronous positioning design of the multi-side support frame 6 improves the compatibility of the tire expander with different wheel sizes, while the adjustable posture design of the cylinder 2 expands the range of tire expansion operations. All components work together through mechanical transmission and pneumatic control to achieve labor-saving, convenient, and efficient tire expansion operations. When the wheel structure does not allow multiple inner support contact blocks 32 to be inserted synchronously, it can be... Rotate and adjust the inner support contact block 32 to raise any inner support contact blocks 32 that cannot be inserted. Since there are multiple inner support contact blocks 32, to ensure the inner support positioning effect, when the total number of inner support contact blocks 32 is less than four, the insufficient number of inner support contact blocks 32 will lead to insufficient support points when rotating and raising them, making it difficult to ensure the positioning stability of the tire expander and the wheel hub. Therefore, in this case, the rotatable adjustment function of the inner support contact block 32 can be omitted, and it is not recommended to rotate it. The rotating lifting adjustment is applicable when the number of inner support contact blocks 32 is greater than four. A rod is inserted into the adjustment hole 5 and inserted relative to the mounting hole on the wheel hub. This can also achieve auxiliary support and limit of the rotating seat 1 relative to the wheel hub. With various installation forms of the wheel hub, the overall practicality of the tire expander is improved. The tire expander uses air pressure drive as the core power source and achieves full automation and convenient operation from equipment positioning and attitude adjustment to tire expansion operation through the coordinated cooperation of multiple components.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tire expander, comprising a sliding seat, characterized in that, It also includes a main body component and an installation component. The main body component includes a rotating seat (1), which is rotatably connected to the sliding seat. A cylinder (2) is installed in the rotating seat (1) through an adjustment component. A claw (3) is installed on the drive rod of the cylinder (2). A back push frame (4) is fixedly connected to the rotating seat (1). An adjustment socket (5) is provided on the back push frame (4). The installation component includes multiple side support frames (6). The multiple side support frames (6) are slidably connected to the sliding seat. An installation island frame (7) is connected to the rotating seat (1). A vertical drive component (8) is installed in the installation island frame (7). The vertical drive component (8) is used for the synchronous sliding drive of the multiple side support frames (6) relative to the sliding seat. The bottom end of the rotating seat (1) is fixedly connected to a side ring (9), and the side ring (9) is fixedly connected to a mounting ring (10). The mounting island frame (7) is provided with an annular outer groove (11). Both the side ring (9) and the mounting ring (10) are provided with an inner half ring (12) that matches the annular outer groove (11). The sliding seat includes multiple split frames (13). Two adjacent split frames (13) are fixedly connected by multiple assembly bolts (14). Two adjacent split frames (13) are provided with a sliding groove (15) that matches the side support frame (6). Each split frame (13) is provided with an annular inner groove (16). Both the side ring (9) and the mounting ring (10) are provided with an outer half ring (17) that matches the annular inner groove (16). The adjustment assembly includes a rotating frame (18) and a side-mounted drive component (19). The rotating frame (18) is rotatably connected to the rotating seat (1). The cylinder (2) is installed in the rotating frame (18). The side-mounted drive component (19) is installed at the bottom end of the mounting ring (10). A transverse shaft (20) is fixedly connected to the drive rod of the side-mounted drive component (19). The rotating frame (18) is provided with two side grooves (21). The two side grooves (21) are respectively connected to the two ends of the transverse shaft (20).

2. A tire expander according to claim 1, characterized in that, Insertion posts (22) are inserted into both of the side grooves (21). Insertion slots (23) are provided at both ends of the transverse shaft (20). Insertion rods (24) are fixedly connected to the ends of the two insertion posts (22) that are close to each other. The two insertion rods (24) are respectively matched with the two insertion slots (23). Two insertion pins (25) are threaded on the transverse shaft (20). The two insertion rods (24) are respectively provided with pin grooves (26). The two pin grooves (26) are respectively matched with the two insertion pins (25).

3. A tire expander according to claim 2, characterized in that, The bottom end of the drive rod of the vertical drive unit (8) is fixedly connected to a synchronous frame (27). The synchronous frame (27) is hinged to a plurality of transmission rods (28). Each of the plurality of transmission rods (28) is rotatably connected to a transmission block (29). Each of the plurality of transmission blocks (29) is fixedly connected to the bottom end of a plurality of side support frames (6). Each of the plurality of split frames (13) is provided with a first passage (30) and a second passage (31). The plurality of first passages (30) are used for the passage of the plurality of transmission blocks (29), and the plurality of second passages (31) are also used for the passage of the plurality of transmission blocks (29).

4. A tire expander according to claim 3, characterized in that, Each of the multiple side support tensioning frames (6) is rotatably connected to an inner support contact block (32), each of the multiple inner support contact blocks (32) is provided with an outer contact arc surface (33), each of the multiple outer contact arc surfaces (33) is provided with a drop limit block (34), and each of the multiple drop limit blocks (34) is provided with an inner plane (35) and an outer slope surface (36) at the bottom.

5. A tire expander according to claim 4, characterized in that, Each of the multiple side support brackets (6) is slidably connected to an alignment bracket (37). Each of the multiple alignment brackets (37) is provided with two alignment points (38). Each of the multiple alignment brackets (37) is fixedly connected with two conical springs (39). Each of the multiple side support brackets (6) has two storage installation slots. Each of the multiple conical springs (39) is fixedly connected in the multiple storage installation slots. Each of the multiple inner support contact blocks (32) has two alignment grooves (40). Each of the multiple alignment grooves (40) matches with the multiple alignment points (38).

6. A tire expander according to claim 5, characterized in that, A mounting sheet metal frame (41) is fixedly connected to the rotating seat (1). A control valve group (42) is installed inside the mounting sheet metal frame (41). The control valve group (42) is used for the operation control of the cylinder (2), the side-mounted drive component (19), and the vertical drive component (8).

7. A tire expander according to claim 6, characterized in that, A handle frame (43) is fixedly connected to the mounting sheet metal frame (41), and two structural reinforcing rods (44) are fixedly connected inside the handle frame (43). Both structural reinforcing rods (44) are fixedly connected to the mounting sheet metal frame (41).

8. A tire expander according to claim 7, characterized in that, The bottom of the claw (3) is provided with an extended shovel hook (45), and the top of the claw (3) is provided with a limiting protrusion (46).

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