Moving wheel structure and cart
By designing the inclined mounting bracket and brake parts on the same side in the cart, the problem of easy rotation of the universal wheel into the vehicle body is solved, achieving convenient braking operation and safety improvement.
Patent Information
- Application Number
- CN202422007368.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The universal wheel structure of the existing trolley is easily rotated to the bottom of the storage cart during the pushing process, resulting in the hiding of the brake structure and making it difficult to operate the brake function.
A moving wheel structure is designed in which the mounting frame extends inclinedly, the brake member is on the same side as the wheel axle, and is maintained outside the cart by tilting rotation, which facilitates the operation of the brake member, combining a removable quick-release seat and a plurality of moving wheel structures to improve operational ease.
During the pushing process, the brake parts are always located outside the cart, which facilitates the user to operate the brakes and improves the convenience and safety of the cart.
Smart Images
Figure CN223072554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of accessories for expansion, and particularly relates to a mobile wheel structure and a trolley. Background Art
[0002] In daily life, a trolley is a type of auxiliary vehicle, generally suitable for use in scenarios such as work and outdoor activities. For example, a user can load shooting accessories on a trolley in some shooting work scenarios.
[0003] Currently, a general trolley usually includes a storage body. A universal wheel structure is movably installed at the bottom of the storage body through a movable rotating shaft, so that the trolley can move. Due to the universal mobility of the universal wheel, therefore, the universal wheel rotating shaft usually needs to deviate from the axial direction of the movable rotating shaft, making the universal wheel have eccentricity to facilitate the universal mobility of the universal wheel. However, in this way, during the process of pushing the trolley, the universal wheel structure is likely to rotate into the interior of the bottom of the storage body, and the braking structure on the universal wheel structure is likely to be rotated into the interior space of the bottom of the storage body along with the structure of the universal wheel, thus making it inconvenient for the user to operate the braking function. Summary of the Utility Model
[0004] The main purpose of this application is to provide a mobile wheel structure and a trolley, aiming to solve the technical problem that during the process of pushing the trolley, the universal wheel structure is likely to rotate into the interior of the bottom of the storage body, and the braking structure on the universal wheel structure is likely to be rotated into the interior space of the bottom of the storage body along with the structure of the universal wheel, thus making it inconvenient for the user to operate the braking function.
[0005] To solve the above technical problem, the technical solution provided in this article is as follows:
[0006] A mobile wheel structure, comprising:
[0007] A connection component;
[0008] A wheel assembly, including a mounting bracket, a wheel, and a braking member. The mounting bracket is movably connected to the connection component through a first rotating shaft, and a part of the structure of the mounting bracket extends obliquely to be connected to the wheel shaft of the wheel, so that the wheel shaft deviates from the axial direction of the first rotating shaft; the braking member is movably connected to the mounting bracket, and the braking member and the wheel shaft are configured to be on the same side of the first rotating shaft.
[0009] In some embodiments, the mounting bracket includes a frame body, a first support arm, and a second support arm. The first support arm and the second support arm are connected to the frame body. Both ends of the wheel axle of the wheel are respectively connected to one ends of the first support arm and the second support arm away from the frame body. The first support arm and the second support arm are inclined so that the wheel axle of the wheel deviates from the axial direction of the first rotating shaft. The braking member is movably connected to the frame body.
[0010] In some embodiments, the braking member includes a braking portion and a first operating portion. The first operating portion is movably connected to the mounting bracket. The braking portion is movably connected to the mounting bracket, and one end is elastically connected to the mounting bracket, and the other end has a braking end. The first operating portion can trigger the braking end to abut against the wheel to brake the wheel.
[0011] In some embodiments, the moving wheel further includes a second operating portion. The second operating portions are all movably connected to the mounting bracket. The first operating portion and the second operating portion cooperate with each other so that the first operating portion can trigger or release the trigger of the braking end to brake or release the braking of the wheel.
[0012] In some embodiments, the first operating portion is movably connected to the mounting bracket through a second rotating shaft, and the second operating portion is movably connected to the mounting bracket through a third rotating shaft. When the first operating portion rotates around the second rotating shaft in a first direction, it can trigger the braking end to brake the wheel, and can make the second operating portion rotate around the third rotating shaft in a second direction. When the second operating portion rotates around the third rotating shaft in the first direction, it can make the first operating portion rotate around the second rotating shaft in the second direction to release the braking of the wheel.
[0013] In some embodiments, the first operating portion includes a first operating body and a first trigger protrusion and a second trigger protrusion arranged at the head of the first operating body. The second operating portion includes a second operating body and a third trigger protrusion arranged at the head of the second operating body.
[0014] The first operating body can rotate around the second rotating shaft in a first direction to press the braking end to brake the wheel, and when the first operating body rotates around the second rotating shaft in the first direction, it can make the first trigger protrusion abut against the second operating body to rotate around the third rotating shaft in a second direction.
[0015] The second operating body can rotate around the third rotating shaft in a first direction so that the third trigger protrusion can abut against the second trigger protrusion to rotate around the second rotating shaft in a second direction, so that the first operating body releases the braking of the wheel.
[0016] In some embodiments, one of the sides facing each other of the first operating portion and the connecting end is provided with a limiting protrusion, and the other is provided with a limiting groove, and the first operating portion can abut against the braking end so that the limiting protrusion is limited in the limiting groove.
[0017] This article also provides a cart, including multiple storage platforms, support columns and the aforementioned movable wheel structure, the multiple storage platforms include a first storage platform and a second storage platform, one end of the support column is connected to the first storage platform, and the other end is connected to the second storage platform, and the connecting component is movably connected to the side of the second storage platform away from the first storage platform through a first rotating shaft.
[0018] In some embodiments, the bottom of the first storage platform includes a crossbeam, the connecting assembly includes a quick-release seat and a locking piece, the quick-release seat is connected to the crossbeam, the locking piece is arranged on the quick-release seat and can lock the quick-release seat to the crossbeam, and the mounting frame is movably connected to the quick-release seat via a first rotating shaft.
[0019] In some embodiments, the moving wheel structure includes a plurality of connecting components of the plurality of moving wheel structures, and the connecting components of the plurality of moving wheel structures are connected to a side of the second storage platform facing away from the first storage platform.
[0020] Beneficial effects:
[0021] In this article, the mounting frame part structure extends obliquely and the brake member and the wheel axle are configured to be located on the same side of the first rotating shaft. Therefore, during use, when the user pushes the cart to move, the wheel rotates relative to the wheel axle, and the mounting frame rotates relative to the connecting assembly to be inclined to the outside of the cart as the wheel rotates, so that the wheel can be located outside the cart, and the brake member and the wheel axle are located on the same side of the first rotating shaft, so that the brake member is located outside the cart, which makes it convenient for the user to operate the brake member to brake the wheel. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0023] Figure 1 A schematic diagram of a cart in the prior art is provided for this article.
[0024] Figure 2 Schematic diagram of a cart in one embodiment of this invention.
[0025] Figure 3It is the front view of the mobile wheel structure in an embodiment of this article.
[0026] Figure 4 It is the left view of the mobile wheel structure in an embodiment of this article.
[0027] Figure 5 It is the cross-sectional view in the A-A direction Figure 4 under the non-braking state.
[0028] Figure 6 It is the cross-sectional view in the A-A direction Figure 4 under the braking state.
[0029] Figure 7 It is the structural schematic diagram of the second operating member in an embodiment of this article.
[0030] Icon description:
[0031] 100, trolley; 10, mobile wheel structure, 20, storage platform; 201, first storage platform; 202, second storage platform; 2021, cross beam; 30, support column; 40, handle;
[0032] 1, connection component; 11, quick-release seat; 111, clamping block; 12, locking member; 121, locking wrench, 122, locking column; 123, locking block; 14, second bearing;
[0033] 2, wheel assembly; 21, mounting bracket; 211, first rotating shaft; 212, frame body; 213, first support arm; 214, second support arm; 22, wheel; 221, wheel shaft; 222, first bearing; 23, braking member; 231, braking part; 2311, braking end; 2312, fourth rotating shaft; 2313, limiting projection; 2314, spring; 232, first operating part; 2321, first operating body; 2322, first triggering projection; 2323, second triggering projection; 2324, limiting groove; 233, second operating part; 2331, second operating body; 2332, third triggering projection; 234, second rotating shaft; 235, third rotating shaft;
[0034] The realization of the purpose, functional features and advantages of this application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners
[0035] Next, the technical solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.
[0037] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the "and / or" throughout the text includes three scenarios. Taking A and / or B as an example, it includes the technical solution of A, the technical solution of B, and the technical solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.
[0038] Please refer to Figure 1 , Figure 1 There is provided an existing trolley 100, which can specifically be a shooting trolley. Figure 1 At the bottom of the storage body of the trolley, a universal wheel structure is movably installed through an existing first rotating shaft. According to the need for the universal rotation of the universal wheel, in the existing design, the mounting bracket 21 usually includes a part of an inclined structure. This inclined part of the structure causes the wheel axle of the wheel 22 to deviate from the axial direction of the first rotating shaft, enabling the wheel 22 to have the function of flexible commutation. It is easy to find in use that the setting of the inclined part of the structure causes the wheel 22, during the driving process, such as Figure 1 from a certain perspective, when pulling the wheel 22, the existing brake member 23 will remain Figure 1 in a certain perspective state. When pushing the wheel 22, the wheel 22 easily rotates around the movable rotating shaft until the existing brake member 23 hides under the vehicle body. However, the shooting trolley is mostly in a pushed state during use, thus making it inconvenient for the user to operate the brake.
[0039] Therefore, when using the trolley 100 to push an item, during each braking operation, the user needs to pull the trolley 100 once to make the brake member 23 located outside the trolley 100. However, generally, pulling the trolley 100 is much more difficult than pushing the trolley 100. Therefore, the existing trolley 100 makes it inconvenient for the user to operate.
[0040] Please refer to Figures 2 - 7The present invention provides a cart 100, a plurality of storage platforms 20, a support column 30 and the aforementioned movable wheel structure 10, wherein the plurality of storage platforms 20 include a first storage platform 201 and a second storage platform 202, one end of the support column 30 is connected to the first storage platform 201, and the other end is connected to the second storage platform 202, and the connecting component 1 is movably connected to the side of the second storage platform 202 away from the first storage platform 201 through a first rotating shaft 211.
[0041] Please refer to 3-7. The mobile wheel structure 10 of this article includes a connecting component 1 and a wheel component 2; the wheel component 2 includes a mounting frame 21, a wheel 22 and a brake member 23, the mounting frame 21 is movably connected to the connecting component 1 through a first rotating shaft 211, and a part of the mounting frame 21 structure is inclined to extend to connect with the wheel shaft 221 of the wheel 22, so that the wheel shaft 221 deviates from the axial direction of the first rotating shaft 211; the brake member 23 is movably connected to the mounting frame 21, and the brake member 23 and the wheel shaft 221 are configured to be located on the same side of the first rotating shaft 211, as shown in FIG. Figures 5 - 6 shown.
[0042] The brake member 23 and the wheel shaft 221 are configured to be located on the same side of the first rotating shaft 211, which can be understood as the brake member 23 and the wheel shaft 221 are both on the same side of the first rotating shaft 211 in the axial direction. Figure 5 and Figure 6 As shown in the perspective view, the brake member 23 and the wheel shaft 221 are both on the left side of the axial direction of the first rotating shaft 211. It can be understood that a portion of the structure of the mounting frame 21 is inclined to extend to a portion of the structure connected to the wheel shaft 221, which can be roughly Figure 3 The part of the mounting frame 21 framed by B.
[0043] In this article, part of the structure of the mounting frame 21 is tilted and extended, and the brake member 23 and the wheel axle 221 are configured to be located on the same side of the first rotating shaft 211. Therefore, during use, when the user pushes the cart 100 to move, the wheel 22 rotates relative to the wheel axle 221, and the mounting frame 21 rotates relative to the connecting assembly 1 to tilt to the outside of the cart 100 as the wheel 22 rotates, so that the wheel 22 can be located outside the cart 100, and the brake member 23 and the wheel axle 221 are located on the same side of the first rotating shaft 211, so that the brake member 23 is located outside the cart 100, so that the user can operate the brake member 23 to brake the wheel 22.
[0044] It should be noted that, generally speaking, it is much easier to push the cart 100 than to pull it. In a few cases, when the user pulls the cart 100 and the braking member 23 rotates into the interior of the bottom of the cart 100, the user can also push the cart 100 slightly to make the braking member 23 located outside the cart 100, which is convenient for the user to operate the braking member 23.
[0045] On the other hand, a first bearing 222 can be provided between the wheel 22 and the wheel shaft 221 to facilitate the rotation of the wheel 22. A second bearing 14 can also be sleeved on the first rotating shaft 211 to facilitate the mobility between the connecting assembly 1 and the mounting bracket 21.
[0046] Specifically for the cart 100 in this article, a handle 40 can be provided on the cart 100 in this article. The connecting assembly 1 can be connected to the second storage platform 202. When the user pushes the cart 100, the mounting bracket 21 will rotate relative to the second storage platform 202 and tilt outside the cart 100 so that the wheel 22 can be located outside the cart 100, and the braking member 23 and the wheel shaft 221 are on the same side of the first rotating shaft 211, so that the braking member 23 is located outside the cart 100, thus facilitating the user to operate the braking member 23 to brake the wheel 22. There are multiple moving wheel structures 10. The connecting assemblies 1 of the multiple moving wheel structures 10 are connected to the side of the second storage platform 202 facing away from the first storage platform 201. For example, the universally rotatable moving wheel structures 10 mentioned in this article can be provided at the four corners of the second storage platform 202, or two of the universally rotatable moving wheel structures 10 mentioned in this article can be provided at one end of the bottom of the second storage platform 202, and two non-universally rotatable wheels 22 can be provided at the other end, as Figure 2 shown.
[0047] Please refer to Figure 2 and Figures 5 - 6 , the second storage platform 202 in this article includes a bottom cross beam 2021, the connecting assembly 1 includes a quick-release seat 11 and a locking member 12. One end of the support column 30 away from the first storage platform 201 is connected to the second storage platform 202. The cross beam 2021 is connected to the side of the second storage platform 202 facing away from the first storage platform 201. The quick-release seat 11 is connected to the cross beam 2021. The locking member 12 is provided on the quick-release seat 11 and can lock the quick-release seat 11 to the cross beam 2021. The mounting bracket 21 is movably connected to the quick-release seat 11 through the first rotating shaft 211. It can be understood that in one embodiment, the connecting assembly 1 can also directly be a connecting block connected to the bottom of the second storage platform 202.
[0048] The specific way of quick disassembly is that the locking member 12 includes a locking wrench 121, a locking column 122 and a locking block 123. The quick disassembly seat 11 further includes a clamping block 111. The clamping block 111 and the locking block 123 are arranged opposite to each other. The locking wrench 121 is threadedly connected to the locking block 123 through the locking column 122. When the locking wrench 121 is rotated, the locking block 123 moves relative to the locking column 122 towards the quick disassembly seat 11 to press the cross beam 2021 between the clamping block 111 and the locking block 123, thereby completing the quick installation of the quick disassembly seat 11 and the cross beam 2021. When unlocking, the locking wrench 121 is pried open, and the locking block 123 moves relative to the locking column 122 away from the quick disassembly seat to release the pressing of the locking block 123 on the cross beam 2021, thereby completing the quick disassembly of the quick disassembly seat 11 and the cross beam 2021.
[0049] Specifically, please refer to Figure 3 , the mounting bracket 21 includes a bracket body 212, a first support arm 213 and a second support arm 214. The first support arm 213 and the second support arm 214 are connected to the bracket body 212. Both ends of the wheel shaft 221 of the wheel 22 are respectively connected to one ends of the first support arm 213 and the second support arm 214 far away from the bracket body 212. The first support arm 213 and the second support arm 214 are inclined so that the wheel shaft 221 of the wheel 22 deviates from the axial direction of the first rotating shaft 211. The braking member 23 is movably connected to the bracket body 212.
[0050] Please refer to Figures 4 - 6 , the braking member 23 includes a braking portion 231 and a first operating portion 232. The first operating portion 232 is movably connected to the mounting bracket 21. The braking portion 231 is movably connected to the mounting bracket 21, and one end is elastically connected to the mounting bracket 21, and the other end has a braking end 2311. The first operating portion 232 can trigger the braking end 2311 to brake the wheel 22. With such a setting, when the user needs to brake the wheel 22, the user can step on the first operating portion 232 so that the first operating portion 232 presses against the braking end 2311, and the braking end 2311 can abut against the wheel 22 to brake the wheel 22; when the user lifts the first operating portion 232 upwards with the foot, the first operating portion 232 can release the abutment against the braking end 2311, and the braking end 2311 can release the abutment against the wheel 22, so that the user can push the trolley 100 and the wheel 22 can rotate. In this embodiment, the braking portion 231 can be movably connected to the mounting bracket 21 through a fourth rotating shaft 2312.
[0051] Further, this article provides a more effective way of braking and unlocking the brake. Please refer to Figures 5 - 7, the moving wheel further includes a second operating part 233. The second operating parts 233 are all movably connected to the mounting bracket 21. The first operating part 232 and the second operating part 233 cooperate with each other so that the first operating part 232 can trigger or release the trigger of the braking end 2311 to brake or release the braking of the wheel 22. Specifically, the first operating part 232 is movably connected to the mounting bracket 21 through a second rotating shaft 234, and the second operating part 233 is movably connected to the mounting bracket 21 through a third rotating shaft 235; when the first operating part 232 rotates around the second rotating shaft 234 in a first direction, it can make the second operating part 233 rotate around the third rotating shaft 235 in a second direction, and the first operating part 232 can trigger the braking end 2311 to brake the wheel 22; when the second operating part 233 rotates around the third rotating shaft 235 in the first direction, it can make the first operating part 232 rotate around the second rotating shaft 234 in the second direction to release the braking of the wheel 22. It should be noted that the first direction is the counterclockwise rotation direction as shown in Figure 5 and Figure 6 , that is, the direction in which the user steps on, and the second direction is the clockwise rotation direction as shown in Figure 5 and Figure 6 . When the viewing angle is changed, the first direction and the second direction change accordingly. With such a setting, when the vehicle stops moving, the user can step on the first operating part 232 once, so that the first operating part 232 can press against the braking end 2311, so that the braking end 2311 presses against the wheel 22 to brake the wheel 22. When the user wants to continue to push the trolley 100 to move, the user can step on the second operating part 233 again. When the second operating part 233 rotates in the first direction, it can trigger the first operating part 232 to release the pressing on the braking end 2311, so as to release the pressing of the braking end 2311 on the wheel 22 to release the braking of the wheel 22. In summary, the operation methods of braking and releasing braking in this solution are both relatively simple, convenient and fast.
[0052] Please refer to Figures 5 - 6 , the first operating part 232 includes a first operating body 2321 and a first trigger protrusion 2322 and a second trigger protrusion 2323 provided at the head of the first operating body 2321. The second operating part 233 includes a second operating body 2331 and a third trigger protrusion 2332 provided at the head of the second operating body 2331;
[0053] The first operating body 2321 can rotate around the second rotating shaft 234 in the first direction and can press the braking end 2311 to brake the wheel 22. When the first operating body 2321 rotates around the second rotating shaft 234 in the first direction, the first triggering protrusion 2322 can abut against the second operating body 2331 to rotate around the third rotating shaft 235 in the second direction. With such a setting, the user can step on the first operating body 2321 so that the first operating body 2321 can press the braking end 2311, thereby enabling the braking end 2311 to press the wheel 22 to brake the wheel 22. On the other hand, when the first operating body 2321 rotates around the second rotating shaft 234 in the first direction, the second operating body 2331 can rotate around the third rotating shaft 235, preparing for the user to release the brake.
[0054] The second operating body 2331 can rotate around the third rotating shaft 235 in the first direction so that the third triggering protrusion 2332 can abut against the second triggering protrusion 2323 to rotate around the second rotating shaft 234 in the second direction, enabling the first operating body 2321 to release the brake on the wheel 22. When the brake needs to be released, the user can step on the second operating body 2331, that is, the second operating body 2331 can rotate around the third rotating shaft 235 in the first direction, and the third triggering protrusion 2332 of the second operating body 2331 can abut against the second triggering protrusion 2323 of the first operating body 2321 to rotate around the second rotating shaft 234 in the second direction. At this time, the first operating body 2321 releases the pressing on the braking end 2311, so that the braking end 2311 releases the pressing on the wheel 22 to complete the brake release. It should be noted that, from Figures 5 - 6 it can be seen that when the user steps on the second operating body 2331 and the third triggering protrusion 2332 abuts against the second triggering protrusion 2323, the second triggering protrusion 2323 rotates in the second direction. At this time, the first operating body 2321 first slightly presses down on the braking end 2311, and then the first operating body 2321 moves away from the braking end 2311.
[0055] Finally, please refer to Figures 5 - 6 In this article, one of the sides of the braking end 2311 and the first operating part 232 facing each other has a limiting protrusion 2313, and the other has a limiting groove 2324. When the user steps on the first operating part 232 so that the first operating part 232 abuts against the braking end 2311, the limiting protrusion 2313 can be received in the limiting groove 2324 to achieve the limitation between the first operating part 232 and the braking end 2311.
[0056] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.
Claims
1. A mobile wheel structure, characterized in that Comprising: A connecting component (1); A wheel assembly (2), including a mounting bracket (21), a wheel (22) and a braking member (23). The mounting bracket (21) is movably connected to the connecting component (1) through a first rotating shaft (211), and a part of the structure of the mounting bracket (21) extends obliquely to be connected to a wheel shaft (221) of the wheel (22), so that the wheel shaft (221) deviates from the axial direction of the first rotating shaft (211); the braking member (23) is movably connected to the mounting bracket (21), and the braking member (23) and the wheel shaft (221) are configured to be on the same side of the first rotating shaft (211).
2. The mobile wheel structure according to claim 1, wherein The mounting bracket (21) includes a frame body (212), a first arm (213) and a second arm (214). The first arm (213) and the second arm (214) are connected to the frame body (212). Both ends of the wheel shaft (221) of the wheel (22) are respectively connected to one ends of the first arm (213) and the second arm (214) far away from the frame body (212). The first arm (213) and the second arm (214) are obliquely arranged, so that the wheel shaft (221) of the wheel (22) deviates from the axial direction of the first rotating shaft (211), and the braking member (23) is movably connected to the frame body (212).
3. The mobile wheel structure according to claim 1 or 2, characterized in that, The braking member (23) includes a braking part (231) and a first operating part (232). The first operating part (232) is movably connected to the mounting bracket (21), the braking part (231) is movably connected to the mounting bracket (21), one end is elastically connected to the mounting bracket (21), and the other end has a braking end (2311). The first operating part (232) can trigger the braking end (2311) to abut against the wheel (22) to brake the wheel (22).
4. The mobile wheel structure according to claim 3, characterized in that, The mobile wheel further includes a second operating part (233). The second operating part (233) is movably connected to the mounting bracket (21). The first operating part (232) and the second operating part (233) cooperate with each other, so that the first operating part (232) can trigger or release the trigger of the braking end (2311) to brake or release the braking of the wheel (22).
5. The mobile wheel structure according to claim 4, characterized in that The first operating part (232) is movably connected to the mounting bracket (21) through a second rotating shaft (234), and the second operating part (233) is movably connected to the mounting bracket (21) through a third rotating shaft (235); when the first operating part (232) rotates around the second rotating shaft (234) in a first direction, it can trigger the braking end (2311) to brake the wheel (22), and can make the second operating part (233) rotate around the third rotating shaft (235) in a second direction; when the second operating part (233) rotates around the third rotating shaft (235) in the first direction, it can make the first operating part (232) rotate around the second rotating shaft (234) in the second direction to release the braking of the wheel (22).
6. The mobile wheel structure according to claim 5, characterized in that, The first operation part (232) includes a first operation body (2321), a first trigger projection (2322) and a second trigger projection (2323) arranged at the head of the first operation body (2321). The second operation part (233) includes a second operation body (2331) and a third trigger projection (2332) arranged at the head of the second operation body (2331). The first operation body (2321) can rotate around the second rotating shaft (234) in a first direction and can press the braking end (2311) to brake the wheel (22). When the first operation body (2321) rotates around the second rotating shaft (234) in the first direction, the first trigger projection (2322) can abut against the second operation body (2331) to make the second operation body (2331) rotate around the third rotating shaft (235) in a second direction. The second operation body (2331) can rotate around the third rotating shaft (235) in the first direction, so that the third trigger projection (2332) can abut against the second trigger projection (2323) to make the second trigger projection (2323) rotate around the second rotating shaft (234) in the second direction, so as to release the braking of the wheel (22) by the first operation body (2321).
7. The mobile wheel structure according to claim 3, wherein, One of the opposite side faces of the first operation part (232) and the connection end is provided with a limiting projection, and the other is provided with a limiting groove (2324). The first operation part (232) can abut against the braking end (2311) to limit the limiting projection in the limiting groove (2324).
8. A trolley, characterized in that, It includes a plurality of storage platforms (20), support columns (30) and the mobile wheel structure according to any one of claims 1-7. The plurality of storage platforms (20) include a first storage platform (201) and a second storage platform (202). One end of the support column (30) is connected to the first storage platform (201), and the other end is connected to the second storage platform (202). The connection component (1) is movably connected to the side of the second storage platform (202) away from the first storage platform (201) through a first rotating shaft (211).
9. The trolley according to claim 8, characterized in that, The bottom of the second storage platform (202) includes a cross beam (2021). The connection component (1) includes a quick-release seat (11) and a locking member (12). The quick-release seat (11) is connected to the cross beam (2021). The locking member (12) is arranged on the quick-release seat (11) and can lock the quick-release seat (11) to the cross beam (2021). The mounting bracket (21) is movably connected to the quick-release seat (11) through a first rotating shaft (211).
10. The trolley according to claim 8, characterized in that, There are a plurality of the mobile wheel structures, and the connection components (1) of the plurality of mobile wheel structures are connected to the side of the second storage platform (202) away from the first storage platform (201).