Modular wheel set quick release structure

Abstract

The application belongs to the technical field of walking wheel set, and discloses a modular wheel set quick release structure, which comprises a lower mounting seat, the top of the lower mounting seat is provided with an upper mounting seat, the top of the lower mounting seat is provided with a mounting through hole in a penetrating mode, the top of the upper mounting seat is provided with a limiting through hole in a penetrating mode, a driving ball is rotationally arranged between the limiting through hole and the mounting through hole, the top of the driving ball extends to the top of the upper mounting seat, the bottom of the driving ball extends to the bottom of the lower mounting seat, a driving mechanism is arranged on the upper mounting seat, a fixing mechanism is arranged on the lower mounting seat and the upper mounting seat, an annular insertion slot is formed in the side wall of the upper mounting seat, a clamping groove is formed in the side wall of the annular insertion slot, the vertical section of the clamping groove extends to the bottom of the upper mounting seat, the fixing mechanism comprises a fixing assembly, and the fixing assembly comprises an annular insertion plate and a clamping block. According to the application, the fixing assembly is arranged, the complicated operation of the prior art is omitted, and the replacement efficiency of the driving ball is improved.

Description

Technical Field

[0001] This utility model relates to the field of walking wheel assembly technology, and in particular to a modular wheel assembly quick-release structure. Background Technology

[0002] Modular wheelsets have different names in different fields, such as walking wheelsets. Walking wheelsets are generally used in the field of material handling, such as aerial transport vehicles. Aerial transport vehicles, also known as EMS aerial transport trolleys, are electric monorail systems suspended in the air. They consist of multiple independent cargo vehicles that run on a specific horizontal monorail.

[0003] A Chinese utility model patent with publication number CN219077295U discloses an omnidirectional steering wheel module, which includes: a drive wheel device, a steering drive device, a main bracket and a steering mechanism. The drive wheel device includes: a travel motor and an integrated drive wheel reducer. In this example, the integrated drive wheel reducer is preferably an embedded rubber-coated wheel reducer, which is fixed to the second position of the main bracket by a flange on one side, and the travel motor is driven by it.

[0004] During the replacement of the drive wheel of the aforementioned omnidirectional steering wheel module, the user needs to operate multiple screws to disassemble and install the travel motor and flange, as well as the motor and drive wheel. The whole process is quite cumbersome and does not improve the efficiency of drive wheel replacement. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a modular wheel assembly quick-release structure.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a modular wheelset quick-release structure, including a lower mounting base, an upper mounting base being provided on the top of the lower mounting base, a mounting through hole being provided through the top of the lower mounting base, a limiting through hole being provided through the top of the upper mounting base, a driving ball being rotatably disposed between the limiting through hole and the mounting through hole, the top of the driving ball extending above the upper mounting base, the bottom of the driving ball extending below the lower mounting base, and the upper mounting base being provided with a mechanism for driving the driving ball to rotate at multiple angles. The moving drive mechanism includes a fixing mechanism on both the lower and upper mounting bases. The upper mounting base has an annular slot extending to the bottom of the upper mounting base on its side wall. The side wall of the annular slot has an L-shaped slot, the vertical section of which extends to the bottom of the upper mounting base. The fixing mechanism includes a fixing component, which includes an annular insert plate fixed to the top of the lower mounting base and engaging with the annular slot, and a locking block fixed to the inner side wall of the annular insert plate and slidingly engaging with the slot. The locking block is located within the horizontal section of the slot.

[0007] By adopting the above technical solution, during the disassembly of the drive ball, rotating the lower mounting base and causing the annular insert plate to rotate allows the locking block to slide along the horizontal section of the slot until it can no longer move. At this point, pulling down the lower mounting base until the annular slot and the annular insert plate separate allows the drive ball to be removed from the lower mounting base. During the installation of the drive ball, first place the drive ball in the mounting through hole, then place the annular insert plate over the annular slot and engage the locking block in the horizontal section of the slot. Next, rotate the lower mounting base in the opposite direction until the locking block can no longer move. This completes the installation of the drive ball. The entire replacement process eliminates the cumbersome operations of existing technologies and improves the efficiency of drive ball replacement.

[0008] Furthermore, the driving mechanism includes a driving assembly, which includes a sliding seat slidably disposed on the top of the upper mounting base, a dual-rotor motor fixed to the top of the sliding seat, a transmission block fixedly sleeved on the output end of one of the dual-rotor motors, and a plurality of driving blocks fixed to the side walls of the transmission blocks and evenly distributed about the axis of the transmission blocks. The side walls of the driving ball are provided with annular toothed grooves that mesh with the driving blocks. A plurality of annular toothed grooves are provided and evenly distributed along the axis of the driving ball. The driving mechanism also includes an angle adjustment assembly for adjusting the direction of movement of the driving ball and a limiting assembly for maintaining the stability of the sliding seat during the movement of the sliding seat.

[0009] By adopting the above technical solution, after one of the output ends of the dual rotor motor works, it drives the transmission block to rotate, which in turn causes the drive block fixed to the transmission block to rotate. Since the annular tooth groove meshes with the drive block, the drive ball moves in one direction.

[0010] Furthermore, the angle adjustment assembly includes a mounting bracket fixedly sleeved on the upper mounting base, a driven bevel gear fixedly on the top of the mounting bracket and coaxially arranged with the mounting bracket, a driving bevel gear fixedly sleeved on the output end of the other dual-rotor motor and meshing with the driven bevel gear, a retainer rotatably mounted on the inner side wall of the lower mounting base and coaxially arranged with the lower mounting base, a connecting shaft penetrating and cooperating with the side wall of the retainer, and a vertical plate fixedly on the top of the retainer. The driving ball is rotatably mounted inside the retainer. The connecting shaft abuts against the limiting through hole. The connecting shaft is located above the lower mounting base. A circular slot that mates with the connecting shaft is opened on the side wall of the driving ball. An arc-shaped through hole communicating with the limiting through hole is opened on the top of the upper mounting base. The arc of the arc-shaped through hole is 180 degrees. The vertical plate slides with the arc-shaped through hole. A limiting slot that inserts into the vertical plate is opened at the bottom of the sliding seat.

[0011] By adopting the above technical solution, after the other output end of the dual rotor motor is working, it drives the active bevel gear to rotate. Since the active bevel gear and the driven bevel gear are meshed and connected, the sliding seat is slidably set on the top of the upper mounting base. Thus, the sliding seat rotates along the axis of the drive ball, causing the dual rotor motor fixed to the sliding seat, the transmission block fixed to the dual rotor motor, the drive block connected to the transmission block, the vertical plate connected to the sliding seat, the connecting shaft connected to the vertical plate, the retainer connected to the connecting shaft, and the drive ball connected to the connecting shaft to all rotate until they rotate to the desired direction. Then, the other output end of the dual rotor motor is closed. At this time, after the output end of the dual rotor motor connected to the transmission block is working, it can drive the drive ball to rotate, thereby realizing the purpose of multi-directional movement of the device for normal transportation work.

[0012] Furthermore, the top of the upper mounting base and the top of the mounting bracket are both provided with an annular groove, and the limiting component includes a limiting post that is rotatably mounted on the bottom of the sliding base and slides in cooperation with the annular groove.

[0013] By adopting the above technical solution, the limiting post will move along the annular groove during the rotation of the sliding seat, which improves the stability of the sliding seat movement. Since the limiting post is rotatably installed at the bottom of the sliding seat, the friction between the limiting post and the annular groove is reduced.

[0014] Furthermore, the side wall of the lower mounting base is provided with a mounting groove, and the fixing mechanism also includes a positioning component. The positioning component includes a slider slidably connected in the mounting groove, a positioning spring fixed between the bottom of the slider and the inner side wall of the mounting groove, a connecting block fixed on the slider, an auxiliary block fixed on the connecting block, a positioning pin fixed on the top of the connecting block, and an annular plate fixedly sleeved on the lower mounting base and fixed to the bottom of the mounting frame. The top of the annular plate is provided with a positioning through hole that engages with the positioning pin.

[0015] By adopting the above technical solution, the auxiliary block is pushed downwards, causing the connecting block, the slider connected to the connecting block, and the positioning pin connected to the connecting block to all move downwards. The positioning spring gradually contracts under force until the positioning pin separates from the positioning through hole. At this point, rotating the annular insert plate and moving the locking block to the vertical section of the slot achieves the separation of the lower and upper mounting seats. After the locking block is engaged in the horizontal section of the slot, the annular insert plate is rotated in the opposite direction until the locking block can no longer move. At this point, the positioning spring gradually extends and resets, and the slider, connecting block, auxiliary block, and positioning pin all move upwards and reset. The limiting of the positioning through hole and the positioning pin improves the stability of the lower and upper mounting seats after connection.

[0016] Furthermore, a guide rod is provided through the top of the slider to slide with the slider, the positioning spring is sleeved on the guide rod, and the guide rod is fixed between the top and bottom of the mounting groove.

[0017] By adopting the above technical solution, during the process of slider lifting and positioning spring extension and retraction, both the slider and the positioning spring will move along the outer wall of the guide rod, which improves the stability of the slider and the positioning spring during movement.

[0018] Furthermore, the limiting component also includes a plurality of balls movably mounted on the bottom of the sliding seat and rotatably connected to the top of the upper mounting seat.

[0019] By adopting the above technical solution, the ball bearings are designed to reduce the friction between the sliding seat and the upper mounting seat during the movement of the sliding seat.

[0020] In summary, the present invention has the following beneficial effects: by setting a fixing component, the cumbersome operation of the prior art is eliminated, and the efficiency of replacing the drive ball is improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0023] Figure 3 This is a structural diagram illustrating the connection structure between the card slot and the card block in an embodiment of this utility model;

[0024] Figure 4 This is a structural diagram illustrating the connection structure between the sliding seat and the vertical plate in an embodiment of this utility model;

[0025] Figure 5 yes Figure 3 Enlarged diagram of point A in the middle.

[0026] In the diagram: 1. Lower mounting base; 2. Upper mounting base; 3. Drive ball; 4. Drive mechanism; 41. Drive assembly; 411. Sliding seat; 412. Dual rotor motor; 413. Transmission block; 414. Drive block; 42. Angle adjustment assembly; 421. Mounting bracket; 422. Driven bevel gear; 423. Driving bevel gear; 424. Cage; 425. Connecting shaft; 426. Vertical plate; 43. Limiting assembly; 431. Limiting... Positioning post; 432, ball bearing; 5, fixing mechanism; 51, fixing component; 511, annular insert plate; 512, locking block; 52, positioning component; 521, slider; 522, positioning spring; 523, connecting block; 524, auxiliary block; 525, positioning locking post; 526, annular plate; 6, annular slot; 7, slot; 8, arc-shaped through hole; 9, annular slide groove; 10, mounting groove; 11, positioning through hole; 12, guide rod. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figure 1-5 As shown in the figure, this application discloses a modular wheel set quick-release structure, including a lower mounting base 1, an upper mounting base 2, a drive ball 3, a fixing mechanism 5, and a drive mechanism 4. The upper mounting base 2 is disposed on top of the lower mounting base 1. A mounting through hole is provided through the top of the lower mounting base 1, and a limiting through hole is provided through the top of the upper mounting base 2. An annular slot 6 extending to the bottom of the upper mounting base 2 is provided on the side wall of the upper mounting base 2, and an L-shaped slot 7 is provided on the side wall of the annular slot 6, with the vertical section of the slot 7 extending to the bottom of the upper mounting base 2. The drive ball 3 is rotatably disposed between the limiting through hole and the mounting through hole, with the top of the drive ball 3 extending above the upper mounting base 2 and the bottom of the drive ball 3 extending below the lower mounting base 1. An arc-shaped through hole 8 communicating with the limiting through hole is provided on the top of the upper mounting base 2, and the arc of the arc-shaped through hole 8 is 180 degrees.

[0029] The fixing mechanism 5 is jointly mounted on the lower mounting base 1 and the upper mounting base 2. The fixing mechanism 5 includes a fixing component 51 and a positioning component 52. The fixing component 51 includes an annular insert plate 511 and a locking block 512. The annular insert plate 511 is fixed to the top of the lower mounting base 1 and engages with the annular slot 6. The locking block 512 is fixed to the inner side wall of the annular insert plate 511 and engages with the slot 7. The locking block 512 is located within the horizontal section of the slot 7.

[0030] During the disassembly of the drive ball 3, rotating the lower mounting base 1 and causing the annular insert plate 511 to rotate allows the locking block 512 to slide along the horizontal section of the slot 7 until it can no longer move. At this point, pulling down the lower mounting base 1 until the annular slot 6 and the annular insert plate 511 separate allows the drive ball 3 to be removed from the lower mounting base 1. During the installation of the drive ball 3, first place the drive ball 3 into the mounting through hole, then place the annular insert plate 511 over the annular slot 6 and engage the locking block 512 in the horizontal section of the slot 7. Next, rotate the lower mounting base 1 in the opposite direction until the locking block 512 can no longer move. This completes the installation of the drive ball 3. The entire replacement process eliminates the cumbersome operations of existing technologies and improves the efficiency of drive ball 3 replacement.

[0031] The positioning assembly 52 includes a slider 521, a positioning spring 522, a connecting block 523, an auxiliary block 524, a positioning pin 525, and an annular plate 526. The slider 521 is slidably connected to the mounting groove 10. The positioning spring 522 is fixed between the bottom of the slider 521 and the inner wall of the mounting groove 10. The connecting block 523 is fixed to the slider 521. The auxiliary block 524 is fixed to the connecting block 523, and the positioning pin 525 is fixed to the top of the connecting block 523. The annular plate 526 is fixedly sleeved on the lower mounting base 1 and fixed to the bottom of the mounting bracket 421. The top of the annular plate 526 has a through-hole 11 that engages with the positioning pin 525.

[0032] Pushing the auxiliary block 524 downward causes the connecting block 523 connected to the auxiliary block 524, the slider 521 connected to the connecting block 523, and the positioning pin 525 connected to the connecting block 523 to all move downward. The positioning spring 522 gradually contracts under force until the positioning pin 525 separates from the positioning through hole 11. At this point, rotating the annular insert plate 511 moves the locking block 512 to the vertical section of the slot 7, thus separating the lower mounting base 1 and the upper mounting base 2. After the locking block 512 is engaged in the horizontal section of the slot 7, the annular insert plate 511 is rotated in the opposite direction until the locking block 512 can no longer move. At this point, the positioning spring 522 gradually extends and resets, and the slider 521, connecting block 523, auxiliary block 524, and positioning pin 525 all move upward and reset. The limiting of the positioning through hole 11 and the positioning pin 525 improves the stability of the lower mounting base 1 and the upper mounting base 2 after connection.

[0033] The drive mechanism 4 is mounted on the upper mounting base 2 and is used to drive the drive ball 3 to rotate at multiple angles. The drive mechanism 4 includes a drive assembly 41, an angle adjustment assembly 42, and a limiting assembly 43. The drive assembly 41 includes a sliding seat 411, a dual-rotor motor 412, a transmission block 413, and a drive block 414. The sliding seat 411 is slidably mounted on the top of the upper mounting base 2, and the dual-rotor motor 412 is fixed to the top of the sliding seat 411. The transmission block 413 is fixedly sleeved on the output end of one of the dual-rotor motors 412, and the drive block 414 is fixed to the side wall of the transmission block 413. Multiple drive blocks 414 are provided and are evenly distributed about the axis of the transmission block 413. The side wall of the drive ball 3 is provided with annular toothed grooves that mesh with the drive blocks 414. Multiple annular toothed grooves are provided and are evenly distributed along the axis of the drive ball 3.

[0034] An angle adjustment assembly 42 is used to adjust the movement direction of the drive ball 3. The angle adjustment assembly 42 includes a mounting bracket 421, a driven bevel gear 422, a driving bevel gear 423, a retainer 424, a connecting shaft 425, and a vertical plate 426. The mounting bracket 421 is fixedly sleeved on the upper mounting base 2. The driven bevel gear 422 is fixed to the top of the mounting bracket 421 and coaxially arranged with the mounting bracket 421. The driving bevel gear 423 is fixedly sleeved on the output end of the other dual-rotor motor 412 and meshes with the driven bevel gear 422. The retainer 424 is rotatably mounted on the inner side wall of the lower mounting base 1 and coaxially arranged with the lower mounting base 1. The drive ball 3 is rotatably mounted inside the retainer 424. The connecting shaft 425 passes through and fits on the side wall of the retainer 424. The connecting shaft 425 abuts against the limiting through hole and is located above the lower mounting base 1. A circular slot is provided on the side wall of the drive ball 3 to mate with the connecting shaft 425, and the vertical plate 426 is fixed to the top of the retainer 424. The vertical plate 426 is slidably engaged with the arc-shaped through hole 8, and a limiting slot is provided at the bottom of the sliding seat 411 to engage with the vertical plate 426.

[0035] When one output end of the dual rotor motor 412 is activated, it drives the transmission block 413 to rotate, causing the drive block 414, which is fixed to the transmission block 413, to rotate. Because the annular toothed groove meshes with the drive block 414, the drive ball 3 moves in one direction. When the other output end of the dual rotor motor 412 is activated, it drives the driving bevel gear 423 to rotate. Because the driving bevel gear 423 meshes with the driven bevel gear 422, the sliding seat 411 is slidably mounted on the top of the upper mounting base 2. Thus, the sliding seat 411 rotates along the axis of the drive ball 3, causing the dual rotor motor 412, which is fixed to the sliding seat 411, to rotate. The transmission block 413 fixed to the dual rotor motor 412, the drive block 414 connected to the transmission block 413, the vertical plate 426 connected to the sliding seat 411, the connecting shaft 425 connected to the vertical plate 426, the retainer 424 connected to the connecting shaft 425, and the drive ball 3 connected to the connecting shaft 425 all rotate until they rotate to the desired direction. Then, the other output end of the dual rotor motor 412 is closed. At this time, after the output end of the dual rotor motor 412 connected to the transmission block 413 is working, it can drive the drive ball 3 to rotate, thereby realizing the purpose of multi-directional movement of the device for normal transportation work.

[0036] The limiting component 43 is used to keep the sliding seat 411 stable during movement. The top of the upper mounting base 2 and the top of the mounting bracket 421 are both provided with an annular groove 9. The limiting component 43 includes a limiting post 431, which is rotatably mounted on the bottom of the sliding seat 411 and slides in cooperation with the annular groove 9. During the rotation of the sliding seat 411, the limiting post 431 moves along the annular groove 9, improving the stability of the sliding seat 411's movement. Because the limiting post 431 is rotatably mounted on the bottom of the sliding seat 411, the friction between the limiting post 431 and the annular groove 9 is reduced.

[0037] A guide rod 12, which slides through the top of the slider 521, is provided to slide with the slider 521. The positioning spring 522 is sleeved on the guide rod 12, and the guide rod 12 is fixed between the top and bottom of the mounting groove 10. During the lifting and lowering of the slider 521 and the extension and retraction of the positioning spring 522, both the slider 521 and the positioning spring 522 will move along the outer wall of the guide rod 12, which improves the stability of the slider 521 and the positioning spring 522 during movement.

[0038] The limiting assembly 43 also includes a plurality of balls 432 movably mounted on the bottom of the slide seat 411 and rollingly connected to the top of the upper mounting seat 2. The arrangement of the balls 432 reduces the friction between the slide seat 411 and the upper mounting seat 2 during the movement of the slide seat 411.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A modular wheel set quick-release structure, including a lower mounting base (1), characterized in that: The lower mounting base (1) is provided with an upper mounting base (2) at its top. The top of the lower mounting base (1) is provided with a through mounting hole, and the top of the upper mounting base (2) is provided with a limit hole. A driving ball (3) is rotatably provided between the limit hole and the mounting hole. The top of the driving ball (3) extends above the upper mounting base (2), and the bottom of the driving ball (3) extends below the lower mounting base (1). The upper mounting base (2) is provided with a driving mechanism (4) for driving the driving ball (3) to rotate at multiple angles. The lower mounting base (1) and the upper mounting base (2) are jointly provided with a fixing mechanism (5). The mounting base (2) has an annular slot (6) extending to the bottom of the upper mounting base (2) on its side wall. The annular slot (6) has an L-shaped groove (7) on its side wall. The vertical section of the groove (7) extends to the bottom of the upper mounting base (2). The fixing mechanism (5) includes a fixing component (51). The fixing component (51) includes an annular insert plate (511) fixed to the top of the lower mounting base (1) and inserted into the annular slot (6), and a locking block (512) fixed to the inner side wall of the annular insert plate (511) and slidably engaged with the groove (7). The locking block (512) is located in the horizontal section of the groove (7).

2. The modular wheel set quick-release structure according to claim 1, characterized in that: The drive mechanism (4) includes a drive assembly (41), which includes a sliding seat (411) slidably disposed on the top of the upper mounting base (2), a dual rotor motor (412) fixed on the top of the sliding seat (411), a transmission block (413) fixedly sleeved on the output end of one of the dual rotor motors (412), and a plurality of drive blocks (414) fixed on the side wall of the transmission block (413) and evenly distributed about the axis of the transmission block (413). The side wall of the drive ball (3) is provided with an annular tooth groove that meshes with the drive block (414). The annular tooth groove is provided in a plurality of them and evenly distributed along the axis of the drive ball (3). The drive mechanism (4) also includes an angle adjustment assembly (42) for adjusting the movement direction of the drive ball (3) and a limiting assembly (43) for keeping the sliding seat (411) stable during the movement of the sliding seat (411).

3. The modular wheel set quick-release structure according to claim 2, characterized in that: The angle adjustment assembly (42) includes a mounting bracket (421) fixedly sleeved on the upper mounting base (2), a driven bevel gear (422) fixedly mounted on the top of the mounting bracket (421) and coaxially arranged with the mounting bracket (421), a driving bevel gear (423) fixedly sleeved on the output end of the other dual rotor motor (412) and meshing with the driven bevel gear (422), a retainer (424) rotatably mounted on the inner side wall of the lower mounting base (1) and coaxially arranged with the lower mounting base (1), a connecting shaft (425) passing through and cooperating with the side wall of the retainer (424), and a vertical shaft fixedly mounted on the top of the retainer (424). Plate (426), the driving ball (3) is rotatably installed in the retainer (424), the connecting shaft (425) abuts against the limiting through hole, the connecting shaft (425) is located above the lower mounting base (1), the side wall of the driving ball (3) is provided with a circular slot that cooperates with the connecting shaft (425), the top of the upper mounting base (2) is provided with an arc through hole (8) that communicates with the limiting through hole, the arc of the arc through hole (8) is 180 degrees, the vertical plate (426) is slidably engaged with the arc through hole (8), and the bottom of the sliding seat (411) is provided with a limiting slot that is inserted into the vertical plate (426).

4. The modular wheel set quick-release structure according to claim 3, characterized in that: The top of the upper mounting base (2) and the top of the mounting bracket (421) are provided with an annular groove (9). The limiting component (43) includes a limiting post (431) that is rotatably mounted on the bottom of the sliding base (411) and slides in cooperation with the annular groove (9).

5. The modular wheel set quick-release structure according to claim 3, characterized in that: The lower mounting base (1) has a mounting groove (10) on its side wall. The fixing mechanism (5) also includes a positioning component (52). The positioning component (52) includes a slider (521) slidably connected in the mounting groove (10), a positioning spring (522) fixed between the bottom of the slider (521) and the inner side wall of the mounting groove (10), a connecting block (523) fixed on the slider (521), an auxiliary block (524) fixed on the connecting block (523), a positioning pin (525) fixed on the top of the connecting block (523), and an annular plate (526) fixedly sleeved on the lower mounting base (1) and fixed to the bottom of the mounting frame (421). The top of the annular plate (526) is provided with a positioning through hole (11) that is inserted and engaged with the positioning pin (525).

6. The modular wheel set quick-release structure according to claim 5, characterized in that: The top of the slider (521) is provided with a guide rod (12) that slides with the slider (521). The positioning spring (522) is sleeved on the guide rod (12). The guide rod (12) is fixed between the top and bottom of the mounting groove (10).

7. The modular wheel set quick-release structure according to claim 4, characterized in that: The limiting component (43) also includes a plurality of balls (432) that are movably mounted on the bottom of the slide (411) and rollably connected to the top of the upper mounting (2).

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