Front fork pipe convenient to disassemble and replace

Abstract

The utility model discloses a front fork tube convenient to disassemble and replace, which relates to the field of front fork tubes and comprises a front fork upper tube, a front fork lower tube is sleeved on the outer side of the bottom of the front fork upper tube, and adjusting components matched with the front fork upper tube are symmetrically arranged at the top of the front fork lower tube. The front fork lower pipe is of a hollow structure, damping assemblies are symmetrically arranged in the bottom end of the front fork lower pipe, the bottom of the front fork lower pipe and the damping assemblies form a U-shaped structure, quick release assemblies are arranged at the bottom ends of the damping assemblies, and a wheel shaft is arranged between the two quick release assemblies. A plurality of first limiting holes matched with the adjusting assemblies are evenly formed in the outer side of the front fork upper pipe. Under the matching action of the front fork upper tube, the front fork lower tube, the damping component and the quick release component, excellent flexural rigidity and fatigue resistance are ensured, the process of disassembly and assembly operation is optimized, the safety performance and driving experience of a motorcycle are improved, and non-professional users can also efficiently complete replacement operation.

Description

Technical Field

[0001] This utility model relates to the field of fork tubes, specifically to a fork tube that is easy to disassemble and replace. Background Technology

[0002] The motorcycle front fork tube is the core component of the front suspension system. It consists of a sleeve structure composed of a precisely fitted inner tube and an outer tube. The upper end of the inner tube is connected to the steering column triangle, and the lower end of the outer tube is fixed to the wheel axle. It contains shock-absorbing springs, hydraulic oil, and a damping system. Its main functions are to absorb road impacts, maintain tire grip, and achieve steering control through extension and retraction.

[0003] Motorcycle fork tubes can be divided into two types according to their structure: upright (inner tube on top) and inverted (outer tube on top). While providing support rigidity, they also ensure handling flexibility. The performance of the fork tube directly affects the riding stability and comfort of the motorcycle. The fork tube is made of high-strength alloy steel and the surface is treated with a hardened coating to enhance wear resistance.

[0004] In the current technology, the disassembly and assembly process of motorcycle front fork tubes is quite cumbersome. It usually requires the use of special tools such as Allen wrenches and sockets, as well as a tripod for separation. If professional auxiliary equipment is lacking, manual disassembly is not only difficult to operate, but may also damage the tube wall precision due to improper force, affecting the performance of the front fork. This complicated disassembly and assembly process makes maintenance or replacement inefficient, which is especially unfriendly to ordinary users.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a front fork tube that is easy to disassemble and replace, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A fork tube that is easy to disassemble and replace includes a fork top tube, a fork bottom tube fitted on the outer side of the bottom of the fork top tube, and symmetrical adjustment components that cooperate with the fork top tube on the top of the fork bottom tube; the fork bottom tube has a hollow structure, and shock-absorbing components are symmetrically arranged inside the bottom end of the fork bottom tube, and the bottom of the fork bottom tube and the shock-absorbing components form a U-shaped structure, and quick-release components are provided at the bottom end of each shock-absorbing component, and an axle is provided between the two sets of quick-release components; several limiting holes that cooperate with the adjustment components are evenly opened on the outer side of the fork top tube.

[0009] Furthermore, to adjust the distance between the upper fork tube and the lower fork tube and to facilitate the disassembly and assembly of the upper and lower fork tubes, the adjustment assembly includes a cylindrical housing located on one side of the top of the lower fork tube. The cylindrical housing has a hollow structure, and a pin is provided inside the cylindrical housing that penetrates the lower fork tube and mates with a limiting hole. A support rod is provided on the side of the pin away from the upper fork tube that penetrates the cylindrical housing, and a limiting block is provided at the other end of the support rod that mates with the cylindrical housing. A spring is provided on the side of the pin away from the upper fork tube that mates with the cylindrical housing. A pull ring is provided on the side of the limiting block away from the cylindrical housing. The pull ring separates the pin from the limiting hole through a pulling action.

[0010] Furthermore, in order to absorb and buffer the impact force from the road surface and reduce the vibration transmitted to the frame, the shock absorption assembly includes a damper installed inside the bottom end of the front fork downtube, a connecting block is provided at the bottom end of the damper, and a spring that cooperates with the damper is provided at the top end of the connecting block.

[0011] Furthermore, to facilitate the disassembly and assembly of the fork downtube and wheel axle, the quick-release assembly includes a support post located at the bottom of the connecting block. The bottom of the support post has several uniformly spaced limiting grooves (I). The bottom of the support post also has several limiting sliders that mate with the limiting grooves (I). Each limiting slider has a limiting protrusion (I) at its bottom. The bottom of each limiting slider has a limiting ring, and the bottom of the limiting ring has several uniformly spaced limiting grooves (II) that mate with the limiting protrusions (I). A support housing (I) that mates with the support post is located on the outer circumference of the limiting ring. The outer side of the support housing (I) has... The first support housing is equipped with a limit strip on its outer side, and the second support housing is equipped with a limit groove on its inner side that mates with the limit strip. The bottom of the second support housing is equipped with a spring that mates with the first support housing. The bottom of the connecting block is evenly provided with several limit holes. The top of the second support housing is symmetrically provided with limit protrusions that mate with the limit holes. The bottom of the support column is hollow, and the bottom of the support column is equipped with a support member that mates with the wheel axle. The top outer side of the support member is provided with a limit groove that mates with the limit slider.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the combined action of the front fork upper tube, front fork lower tube, shock absorption components, and quick-release components, ensures excellent bending stiffness and fatigue resistance, effectively supporting the weight of the vehicle and withstanding impacts from complex road conditions. It also reduces vibrations transmitted to the frame, ensuring driving stability and riding comfort. By adopting modular disassembly and assembly interfaces to replace traditional interference fits, the disassembly and assembly process is optimized, facilitating maintenance and upgrades, improving the safety performance and driving experience of the motorcycle, enhancing overall durability and impact resistance, and enabling non-professional users to efficiently complete replacement work.

[0014] 2. With the combined action of the adjustment component and the quick-release component, this utility model ensures that the upper tube and lower tube of the fork can be safely separated without the need for special tools. At the same time, it optimizes the design of the connection between the lower tube and the wheel axle, simplifying the disassembly and assembly process of the whole vehicle. It not only avoids the stripping or misalignment problems that are prone to occur in traditional threaded connections, but also ensures the structural integrity during repeated disassembly and assembly. This improves the efficiency of daily maintenance, component replacement or transportation and storage, while maintaining the original shock absorption performance and driving safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a front fork tube that is easy to disassemble and replace according to an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of a front fork tube that is easy to disassemble and replace according to an embodiment of the present utility model;

[0018] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0020] Figure 5 This is a three-dimensional assembly diagram of a quick-release assembly in a front fork tube that is easy to disassemble and replace, according to an embodiment of the present utility model.

[0021] Figure 6 yes Figure 5 A magnified view of a section at point C.

[0022] In the picture:

[0023] 1. Fork top tube; 2. Fork bottom tube; 3. Adjustment assembly; 301. Cylindrical housing; 302. Pin; 303. Support rod; 304. Limiting block; 305. Spring 1; 306. Pull ring; 4. Shock absorption assembly; 401. Damper; 402. Connecting block; 403. Spring 2; 5. Quick release assembly; 501. Support column; 502. Limiting groove 1; 503. Limiting slider; 504. Limiting protrusion 1; 505. Limiting ring; 506. Limiting groove 2; 507. Support housing 1; 508. Support housing 2; 509. Limiting strip; 510. Limiting groove 3; 511. Spring 3; 512. Limiting hole 2; 513. Limiting protrusion 2; 514. Support piece; 515. Limiting groove 4; 6. Wheel axle; 7. Limiting hole 1. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] According to an embodiment of the present invention, a fork tube that is easy to disassemble and replace is provided.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-6 As shown, the fork tube according to this embodiment of the present invention, which is easy to disassemble and replace, includes an upper fork tube 1, a lower fork tube 2 sleeved on the bottom outer side of the upper fork tube 1, and an adjustment component 3 symmetrically arranged on the top of the lower fork tube 2 to cooperate with the upper fork tube 1; the lower fork tube 2 has a hollow structure, and shock-absorbing components 4 are symmetrically arranged inside the bottom end of the lower fork tube 2, and the bottom of the lower fork tube 2 and the shock-absorbing components 4 form a U-shaped structure, and quick-release components 5 are provided at the bottom end of each shock-absorbing component 4, and a wheel axle 6 is arranged between the two sets of quick-release components 5; a plurality of limiting holes 7 that cooperate with the adjustment components 3 are evenly opened on the outer side of the upper fork tube 1.

[0027] By utilizing the aforementioned technical solution, this utility model, through the coordinated action of the front fork upper tube 1, front fork lower tube 2, shock absorption assembly 4, and quick-release assembly 5, ensures excellent bending stiffness and fatigue resistance. It effectively supports the vehicle's weight and withstands impacts from complex road conditions, while reducing vibrations transmitted to the frame, thus guaranteeing riding stability and comfort. By employing modular assembly and disassembly interfaces instead of traditional interference fits, the assembly and disassembly process is optimized, facilitating maintenance and upgrades, improving the motorcycle's safety performance and riding experience, and enhancing overall durability and impact resistance. This allows even non-professional users to efficiently complete replacement work. With the cooperation of adjustment component 3 and quick-release component 5, it ensures that the front fork upper tube 1 and front fork lower tube 2 can be safely separated without special tools. At the same time, the design of the connection between the front fork lower tube 2 and the wheel axle 6 has been optimized, simplifying the whole vehicle disassembly and assembly process. This not only avoids the stripping or misalignment problems that are prone to occur in traditional threaded connections, but also ensures the structural integrity during repeated disassembly and assembly. This improves the efficiency of daily maintenance, parts replacement, or transportation and storage, while maintaining the original shock absorption performance and driving safety.

[0028] In one embodiment, the adjustment assembly 3 includes a cylindrical housing 301 disposed on one side of the top of the lower fork tube 2. The cylindrical housing 301 has a hollow structure. Inside the cylindrical housing 301, there is a pin 302 that penetrates the lower fork tube 2 and engages with a limiting hole 7. On the side of the pin 302 away from the upper fork tube 1, there is a support rod 303 that penetrates the cylindrical housing 301. At the other end of the support rod 303, there is a limiting block 304 that engages with the cylindrical housing 301. On the side of the pin 302 away from the upper fork tube 1, there is a spring 305 that engages with the cylindrical housing 301. On the side of the limiting block 304 away from the cylindrical housing 301, there is a pull ring 306. The pull ring 306 pulls the pin 302 away from the limiting hole 7. Thus, the distance between the upper fork tube 1 and the lower fork tube 2 can be adjusted, and the disassembly and assembly of the upper fork tube 1 and the lower fork tube 2 can be facilitated.

[0029] The working principle of adjustment component 3 is as follows:

[0030] By pulling the pull ring 306, the support rod 303 moves along the cylindrical shell 301 away from the upper fork tube 1. Under the action of the movement of the support rod 303, the pin 302 moves away from the upper fork tube 1 along the cylindrical shell 301, and at the same time, the spring 305 is squeezed. At this time, the upper fork tube 1 can be disassembled, or the limiting hole 7 at different positions can be aligned with the horizontal position of the pin 302. Then, the pull ring 306 is released. Under the reset action of the spring 305, the pin 302 is driven back to the initial position and makes close contact with the selected limiting hole 7, thus adjusting the relative position between the upper fork tube 1 and the lower fork tube 2.

[0031] In one embodiment, the shock absorption assembly 4 includes a damper 401 disposed inside the bottom end of the fork downtube 2. A connecting block 402 is disposed at the bottom end of the damper 401, and a spring 403 that cooperates with the damper 401 is disposed at the top end of the connecting block 402; thereby absorbing and buffering the impact force from the road surface and reducing the vibration transmitted to the frame.

[0032] It should be explained that the damper 401 is a device that absorbs and reduces vibrations through hydraulic principles. Its core structure includes a piston, damping oil, oil passage, and an adjustable valve. When the vehicle encounters bumps, the vibration of the wheel axle 6 is transmitted to the lower tube 2 of the fork through the connecting block 402 and the damper 401. At this time, the damper 401 is subjected to compression or rebound force. Under the action of compression or rebound force, the piston moves in the cavity filled with high-viscosity damping oil, forcing the oil to pass through the precision small hole or valve on the piston. When the oil flows through the narrow channel, fluid resistance is generated, which converts the impact kinetic energy into heat energy and dissipates it, thereby inhibiting the excessive extension and contraction of the spring 403. During the compression stage, the valve limits the oil flow rate to achieve buffering. During the rebound stage, the reset speed is controlled by an independent oil circuit. The damping stiffness can be dynamically adjusted by adjusting the valve to change the cross-sectional area of ​​the oil passage. This is existing technology and will not be explained in detail here.

[0033] In one embodiment, the quick-release assembly 5 includes a support post 501 disposed at the bottom end of the connecting block 402. The bottom end of the support post 501 is provided with a plurality of limiting grooves 502 evenly spaced. The bottom end of the support post 501 is provided with a plurality of limiting sliders 503 that cooperate with the limiting grooves 502. The bottom end of each limiting slider 503 is provided with a limiting protrusion 504. The bottom end of each limiting slider 503 is provided with a limiting ring 505. The bottom end of the limiting ring 505 is provided with a plurality of limiting grooves 506 that cooperate with the limiting protrusions 504. The outer circumference of the limiting ring 505 is provided with a support shell 507 that cooperates with the support post 501. The outer side of the support shell 507 is provided with a support bracket that cooperates with the support post 501 and the connecting block 402. Support shell 2 508; Support shell 1 507 has a limiting strip 509 on its outer side, and the inner side of support shell 2 508 has a limiting groove 3 510 that cooperates with the limiting strip 509; The inner bottom end of support shell 2 508 has a spring 3 511 that cooperates with support shell 1 507; The bottom end of connecting block 402 has several limiting holes 2 512 evenly distributed; The top end of support shell 2 508 has symmetrical limiting protrusions 2 513 that cooperate with the limiting holes 2 512; The bottom of support column 501 has a hollow structure, and the inner bottom end of support column 501 has a support member 514 that cooperates with wheel axle 6, and the outer side of the top of support member 514 has a limiting groove 4 515 that cooperates with limiting slider 503; thereby facilitating the disassembly and assembly of the front fork lower tube 2 and wheel axle 6.

[0034] The working principle of quick-release component 5 is as follows:

[0035] When installing the front fork downtube 2 between the fork and the wheel axle 6, first, fit the two sets of support pieces 514 onto both sides of the wheel axle 6. Then, align the bottom end of the front fork downtube 2 with the support piece 514, and insert the support piece 514 into the bottom end of the front fork downtube 2. The operator moves the second support housing 508 vertically downward, causing the second limiting protrusion 513 to separate from the second limiting hole 512, while simultaneously compressing the third spring 511. Then, rotate the second support housing 508 clockwise. Under the rotation of the second support housing 508, based on the cooperation between the third limiting groove 510 and the limiting strip 509, the first support housing 507 rotates. Under the action of the limit ring 505, the limit ring 505 rotates. Under the action of the rotation of the limit ring 505, the limit protrusion 504 moves along the limit groove 506. Under the action of the movement of the limit protrusion 504, the limit slider 503 slides along the limit groove 502, reducing the relative distance between the limit sliders 503 until the limit slider 503 is in close contact with the limit groove 515. Then the support housing 508 is released. Under the reset action of the spring 511, the support housing 508 rises vertically until the limit protrusion 513 contacts the limit hole 512, thus realizing the installation operation between the front fork lower tube 2 and the wheel axle 6.

[0036] When it is necessary to disassemble the lower fork tube 2 from the wheel axle 6, the operator first moves the support housing 2 508 vertically downwards, causing the limiting protrusion 2 513 to separate from the limiting hole 2 512, while simultaneously compressing the spring 3 511. Then, the support housing 2 508 is rotated counterclockwise. Under the rotation of the support housing 2 508, based on the cooperation between the limiting groove 3 510 and the limiting strip 509, the support housing 1 507 is driven to rotate. Under the rotation of the support housing 1 507, the limiting ring 505 is driven to rotate. Under the rotation of the limiting ring 505, the limiting protrusion 1 504 is driven to move along the limiting groove 2 506, and the limiting protrusion 504 moves along the limiting groove 2 506. Under the movement of the first protrusion 504, the limiting slider 503 is driven to slide along the first limiting groove 502, increasing the relative distance between the limiting sliders 503 until the limiting slider 503 is completely separated from the fourth limiting groove 515. Then the second supporting shell 508 is released. Under the reset action of the third spring 511, the second supporting shell 508 is driven to rise vertically until the second limiting protrusion 513 contacts the second limiting hole 512. At this time, the lower tube of the fork is moved vertically so that the bottom end of the lower tube of the fork is disengaged from the support member 514. Then the support members 514 on both sides of the wheel axle 6 are removed to complete the disassembly operation between the lower tube of the fork 2 and the wheel axle 6.

[0037] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0038] In practical application, firstly, the two sets of support members 514 are respectively fitted onto both sides of the wheel axle 6. Then, the bottom end of the front fork lower tube 2 is aligned with the support member 514, and the support member 514 is inserted into the bottom end of the front fork lower tube 2. The operator moves the support housing 2 508 vertically downward, causing the limiting protrusion 2 513 to separate from the limiting hole 2 512, while simultaneously compressing the spring 3 511. Then, the support housing 2 508 is rotated clockwise. Under the rotation of the support housing 2 508, based on the cooperation between the limiting groove 3 510 and the limiting strip 509, the support housing 1 507 is driven to rotate. Under the rotation of the support housing 1 507, the limiting ring 505 is driven to rotate. Under the rotation of the limiting ring 505, the limiting protrusion 1 504 is driven to move along the limiting groove 2. 506 moves, and under the action of the movement of the limiting protrusion 504, the limiting slider 503 slides along the limiting groove 502, reducing the relative distance between several limiting sliders 503 until the limiting slider 503 is in close contact with the limiting groove 515. Then the supporting shell 508 is released, and under the reset action of the spring 511, the supporting shell 508 is driven to rise vertically until the limiting protrusion 513 contacts the limiting hole 512, completing the installation between the front fork downtube 2 and the wheel axle 6. Then, according to the requirements, the relative distance between the front fork top tube 1 and the front fork downtube 2 is adjusted by the adjusting component 3. When the road vibration is transmitted to the front fork downtube 2, the vibration transmitted to the frame is effectively reduced by the action of the shock absorption component 4, which is suitable for complex road conditions.

[0039] The working principles of adjustment component 3, shock absorption component 4 and quick release component 5 are as described above.

[0040] In summary, by utilizing the aforementioned technical solution of this utility model, the coordinated action of the front fork upper tube 1, front fork lower tube 2, shock absorber 4, and quick-release assembly 5 ensures excellent bending stiffness and fatigue resistance. It effectively supports the vehicle's weight and withstands impacts from complex road conditions, while reducing vibrations transmitted to the frame, thus guaranteeing driving stability and ride comfort. The modular assembly / disassembly interface replaces the traditional interference fit, optimizing the assembly / disassembly process, facilitating maintenance and upgrades, improving motorcycle safety and driving experience, and enhancing overall durability and resistance to impacts. The impact resistance allows even non-professional users to efficiently complete replacement work. With the cooperation of the adjustment component 3 and the quick-release component 5, it ensures that the upper fork tube 1 and the lower fork tube 2 can be safely separated without special tools. At the same time, the design of the connection between the lower fork tube 2 and the wheel axle 6 has been optimized, simplifying the whole vehicle disassembly and assembly process. This not only avoids the stripping or misalignment problems that are prone to occur in traditional threaded connections, but also ensures the structural integrity during repeated disassembly and assembly. This improves the efficiency of daily maintenance, parts replacement, or transportation and storage, while maintaining the original shock absorption performance and riding safety.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fork tube that is easy to disassemble and replace, comprising a fork top tube (1), characterized in that, The lower fork tube (2) is sleeved on the bottom outer side of the upper fork tube (1), and the lower fork tube (2) has a hollow structure; The top of the lower tube (2) of the fork is symmetrically provided with adjustment components (3) that cooperate with the upper tube (1) of the fork; The bottom end of the front fork lower tube (2) is symmetrically provided with shock-absorbing components (4), and the bottom of the front fork lower tube (2) and the shock-absorbing components (4) form a U-shaped structure. The bottom end of each shock-absorbing component (4) is provided with a quick-release component (5), and a wheel axle (6) is provided between the two sets of quick-release components (5); The outer side of the upper tube (1) of the fork is provided with several limiting holes (7) that cooperate with the adjustment component (3).

2. The front fork tube that is easy to disassemble and replace according to claim 1, characterized in that, The adjustment assembly (3) includes a cylindrical housing (301) disposed on one side of the top of the lower tube (2) of the fork, and the cylindrical housing (301) has a hollow structure; The cylindrical outer shell (301) is provided with a pin (302) that penetrates the lower tube of the fork (2) and cooperates with the limiting hole (7). A support rod (303) that penetrates the cylindrical outer shell (301) is provided on the side of the pin (302) away from the upper tube of the fork (1). A limiting block (304) that cooperates with the cylindrical outer shell (301) is provided at the other end of the support rod (303). A spring (305) that cooperates with the cylindrical housing (301) is provided on the side of the pin (302) away from the upper tube (1) of the fork.

3. The easily disassembled and replaceable front fork tube according to claim 2, characterized in that, A pull ring (306) is provided on the side of the limiting block (304) away from the cylindrical shell (301). The pull ring (306) causes the pin (302) to separate from the limiting hole (7) by pulling.

4. The easily disassembled and replaceable front fork tube according to claim 1, characterized in that, The shock absorption assembly (4) includes a damper (401) disposed inside the bottom end of the front fork lower tube (2), a connecting block (402) is disposed at the bottom end of the damper (401), and a spring (403) cooperating with the damper (401) is disposed at the top end of the connecting block (402).

5. A front fork tube that is easy to disassemble and replace according to claim 4, characterized in that, The quick-release assembly (5) includes a support column (501) disposed at the bottom end of the connecting block (402). The bottom end of the support column (501) is provided with a plurality of limiting grooves (502) evenly distributed. The bottom end of the support column (501) is provided with a plurality of limiting sliders (503) that cooperate with the limiting grooves (502). The bottom end of each limiting slider (503) is provided with a limiting protrusion (504). The bottom end of several of the limiting sliders (503) is provided with a limiting ring (505), and the bottom end of the limiting ring (505) is evenly provided with several limiting grooves (506) that cooperate with the limiting protrusion (504).

6. A front fork tube that is easy to disassemble and replace according to claim 5, characterized in that, The outer circumference of the limiting ring (505) is provided with a first support shell (507) that cooperates with the support column (501), and the outer side of the first support shell (507) is provided with a second support shell (508) that cooperates with the support column (501) and the connecting block (402). The outer side of the first supporting shell (507) is provided with a limiting strip (509), and the inner side of the second supporting shell (508) is provided with a limiting groove (510) that cooperates with the limiting strip (509). The inner bottom end of the second support shell (508) is provided with a third spring (511) that cooperates with the first support shell (507).

7. A front fork tube that is easy to disassemble and replace according to claim 6, characterized in that, The bottom end of the connecting block (402) is provided with a plurality of limiting holes (512) evenly distributed; The top end of the second supporting shell (508) is symmetrically provided with a second limiting protrusion (513) that cooperates with the second limiting hole (512); The bottom of the support column (501) is a hollow structure, and the inner bottom end of the support column (501) is provided with a support member (514) that cooperates with the wheel axle (6). The top outer side of the support member (514) is provided with a limiting groove (515) that cooperates with the limiting slider (503).

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