Stand column rotating structure applied to trolley and trolley

Abstract

The utility model discloses a stand column rotating structure applied to a trolley and the trolley, and relates to the technical field of machinery. Each stand column rotating component comprises a net door connecting assembly connected with a net door, a side net connecting assembly connected with a trolley side net and a multifunctional connecting assembly connected with the net door connecting assembly and the side net connecting assembly. The multifunctional connecting assembly is provided with a rotating component capable of enabling the net door connecting assembly and the side net connecting assembly to rotate relatively and a moving component capable of enabling the net door connecting assembly and the side net connecting assembly to move up and down relatively. The rotating component and the moving component are integrated on the multifunctional connecting assembly, so that a rotating mechanism and an up-down moving mechanism are integrated on the stand column rotating component, the operation process is smoother, multiple functions can be achieved in the same structure, and the overall structure of the trolley is more compact and more concise.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a column rotating structure applied to a trolley and the trolley. Background Art

[0002] With the rapid development of the logistics, transportation and warehousing industries, trolleys, as an important material handling equipment, are widely used in various scenarios such as cargo loading and unloading, storage and transportation. The main function of trolleys is to facilitate the movement and management of cargo, but at the same time, the requirements for safety, ease of operation and compact design are also constantly increasing.

[0003] The design of a traditional trolley usually includes a body, a wheel set and a loading area, and is provided with a net door to prevent goods from falling during transportation. The net door is connected to the side net of the trolley by rotation, so that it can be easily opened and closed when loading and unloading goods. When the net door is closed on the trolley, the net door is locked on the trolley by a locking structure. The rotation on the side net of the trolley cannot be achieved by the rotating structure. It is necessary to move the structure up and down to drive the net door upward to release the lock of the net door by the locking structure. The net door can be rotated on the side net of the trolley through the rotating structure. Although this design improves safety to a certain extent, the complexity and dispersion of the existing net door structure have gradually emerged, resulting in some shortcomings in the use of the trolley.

[0004] Specifically, when the trolley needs to be opened, the operator first moves the mesh door up by moving the structure up and down. This action disengages the mesh door from the locking structure and prepares for the subsequent opening action. When the mesh door moves up and is unlocked, the operator can rotate the mesh door on the trolley side net to open the mesh door for loading and unloading of goods. After completing the loading and unloading of goods, the mesh door needs to be rotated to the specified position, and then moved down by moving the structure up and down, and re-docking and locking it with the locking structure.

[0005] Although the existing mesh door and locking mechanism provide a certain degree of security, the decentralized rotation mechanism and up and down movement mechanism make the overall design of the trolley bulky, limit the compactness of the overall structure, and increase the difficulty of production and maintenance.

[0006] The present invention is proposed in view of the deficiencies in the prior art. Utility Model Content

[0007] The above-mentioned decentralized design of the existing rotation mechanism and the up-and-down movement mechanism makes the overall design of the trolley bulky, which limits the compactness of the overall structure.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] A column rotation structure applied to a trolley includes at least one column rotation component, each of the column rotation components includes a net door connection assembly connected to the net door, a side net connection assembly connected to the trolley side net, and a multifunctional connection assembly connected to the net door connection assembly and the side net connection assembly respectively, the multifunctional connection assembly is provided with a rotating component that can make the net door connection assembly and the side net connection assembly rotate relative to each other, and a movable component that can make the net door connection assembly and the side net connection assembly move up and down relative to each other.

[0010] As described above, a column rotation structure applied to a trolley, the movable component includes a first sliding part and a second sliding part slidably connected thereto, the first sliding part is arranged on a multifunctional connecting component, and the second sliding part is arranged on a net door connecting component or a side net connecting component.

[0011] As described above, a column rotation structure applied to a trolley, the first sliding part includes a sliding connection sleeve arranged on a multifunctional connection component, a sliding hole is provided in the sliding connection sleeve, the second sliding part includes a sliding section corresponding to the sliding hole, the sliding connection sleeve is arranged on the outside of the sliding section through the sliding hole, and the sliding connection sleeve can slide up and down along the sliding section.

[0012] As described above, in a column rotation structure applied to a trolley, the second sliding part also includes two first limiting protrusions located at the upper and lower ends of the sliding section respectively, and each of the first limiting protrusions can be offset against the sliding connecting sleeve to limit the sliding distance of the sliding connecting sleeve on the sliding section.

[0013] As described above, a column rotation structure applied to a trolley, the rotating component includes the sliding hole and the sliding section, the shape of the sliding hole is the same as or similar to the outer contour shape of the sliding section, the shape of the sliding hole is circular, and the outer contour shape of the sliding section is circular, so that the sliding connecting sleeve can rotate relative to the sliding section through the sliding hole.

[0014] As described above, a column rotation structure applied to a trolley, the rotating component includes a first rotating part and a second rotating part rotatably connected thereto, the first rotating part is arranged on a multifunctional connecting component, and the second rotating part is arranged on a net door connecting component or a side net connecting component.

[0015] As described above, a column rotation structure applied to a trolley, the first rotating part includes a rotating connecting sleeve arranged on a multi-functional connecting assembly, a rotating hole is provided in the rotating connecting sleeve, the second rotating part includes a rotating segment corresponding to the rotating hole, and the rotating connecting sleeve is rotatably mounted on the outer side of the rotating segment through the rotating hole.

[0016] As described above, in a column rotation structure applied to a trolley, the second rotating part also includes two second limiting protrusions located at the upper and lower ends of the rotating section respectively, and each of the second limiting protrusions is close to or against the rotating connecting sleeve to limit the rotating connecting sleeve on the rotating section.

[0017] As described above, a column rotation structure applied to a trolley has a plurality of column rotation parts, and the plurality of column rotation parts are spaced apart along the height direction of the trolley side net, and linkage components are provided between adjacent column rotation parts, and the two ends of each linkage component are respectively connected to the corresponding multifunctional connecting components, and the plurality of linkage components can drive the plurality of movable components to move up and down synchronously; or, the plurality of linkage components can drive the plurality of movable components to move up and down synchronously, and drive the plurality of rotating components to rotate synchronously.

[0018] A trolley, which includes a trolley side net, a net door and a column rotation structure applied to the trolley as described in any one of the above items, the net door is connected to the net door connecting assembly, the trolley side net is connected to the side net connecting assembly, the net door connecting assembly can be relatively displaced upward on the side net connecting assembly through a movable component to allow the net door to be converted to an unlocked state on the trolley side net, and the net door connecting assembly can be relatively rotated on the side net connecting assembly through a rotating component to drive the net door in the unlocked state to rotate on the trolley side net.

[0019] The beneficial effects of the utility model are:

[0020] The utility model relates to a column rotating structure applied to a trolley and a trolley, and relates to the field of mechanical technology, wherein the column rotating structure includes at least one column rotating component, each of the column rotating components includes a net door connecting component connected to the net door, a side net connecting component connected to the trolley side net, and a multifunctional connecting component respectively connected to the net door connecting component and the side net connecting component, the multifunctional connecting component is provided with a rotating member capable of relative rotation of the net door connecting component and the side net connecting component, and a moving member capable of relative up and down displacement of the net door connecting component and the side net connecting component; by integrating the rotating member and the moving member on the multifunctional connecting component, the rotating mechanism and the up and down movement mechanism are concentrated on the column rotating component, making the operation process smoother, and multiple functions can be realized in the same structure, so that the overall structure of the trolley is more compact and the overall structure appears more concise.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram and a partial enlarged schematic diagram of the trolley of the present utility model;

[0023] Figure 2 It is a structural diagram and a partial enlarged diagram of the column rotation structure of the utility model;

[0024] Figure 3 This is one of the exploded schematic diagrams of the column rotation structure of the present utility model;

[0025] Figure 4 This is the second exploded schematic diagram of the column rotation structure of the present invention;

[0026] Figure 5 This is a top view of the column rotation structure of the present invention;

[0027] Figure 6 for Figure 5 Schematic cross-sectional view along line DD and partially enlarged schematic view. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 6 As shown, a column rotation structure applied to a trolley in this embodiment includes at least one column rotation component 7, each of the column rotation components 7 includes a net door connection component 71 connected to the net door 101, a side net connection component 72 connected to the trolley side net 2, and a multifunctional connection component 73 respectively connected to the net door connection component 71 and the side net connection component 72, and the multifunctional connection component 73 is provided with a rotating component 74 that can make the net door connection component 71 and the side net connection component 72 rotate relative to each other, and a moving component 75 that can make the net door connection component 71 and the side net connection component 72 move up and down relative to each other.

[0030] By integrating the rotating component 74 and the moving component 75 on the multifunctional connecting component 73, the column rotating component 7 can simultaneously have the function of causing the net door connecting component 71 and the side net connecting component 72 to rotate relative to each other, and to cause the net door connecting component 71 and the side net connecting component 72 to move up and down relative to each other, so that the rotation mechanism and the up and down movement mechanism are concentrated on the column rotating component 7, and the relative rotation and relative up and down displacement of the net door connecting component 71 and the side net connecting component 72 can be realized in the same structure, making the operation process smoother, and multiple functions can be realized in the same structure, which can effectively reduce the complexity and number of parts in the design, making the overall structure of the trolley more compact, the overall structure appears simpler, and reducing potential failure points.

[0031] Specifically, the movable member 75 enables the net door connecting assembly 71 and the side net connecting assembly 72 to move up and down, ensuring that the net door can be accurately positioned in different states (such as when locked and unlocked), thereby improving safety and stability.

[0032] Specifically, the rotating member 74 allows the net door connecting assembly 71 and the side net connecting assembly 72 to rotate relative to each other, so that the net door can be easily opened or closed to meet different operating requirements.

[0033] Furthermore, the integrated design reduces the occupied space, making the trolley more compact in design, helping to improve operational efficiency in limited spaces and adapt to various usage environments. The integrated rotation and movement mechanism can better control the opening and closing of the net door, ensuring stability during operation and reducing the risk of accidents.

[0034] Furthermore, by realizing multiple functions through one component, operators can adjust and control it more conveniently, improving work flexibility and meeting diverse operational needs.

[0035] Furthermore, the integrated design of the column rotation structure not only simplifies the production and assembly process, but also reduces subsequent maintenance costs because it reduces the number of parts that need to be individually inspected and replaced.

[0036] Preferably, the movable member 75 is located between the multifunctional connecting component 73 and the side net connecting component 72, or the movable member 75 is located between the multifunctional connecting component 73 and the net door connecting component 71. An appropriate design can be selected according to actual needs.

[0037] like Figures 1 to 6 As shown, the movable member 75 of this embodiment includes a first sliding portion 751 and a second sliding portion 752 slidably connected thereto, the first sliding portion 751 being arranged on the multi-functional connecting component 73, and the second sliding portion 752 being arranged on the mesh door connecting component 71 or the side net connecting component 72. Through this sliding connection method, the two components can move relative to each other, thereby realizing the function of up and down displacement. This sliding design allows the relative up and down displacement of the mesh door connecting component 71 and the side net connecting component 72 to be realized through the sliding mechanism during operation, thereby ensuring that the mesh door 101 can be accurately positioned when opened and closed.

[0038] Preferably, the design of the moving member 75 of the sliding mechanism can reduce friction, provide a smoother movement experience, and there will be no jamming or discomfort during operation, thereby improving the user experience. The design of the moving member 75 can effectively disperse the force applied to the net door 101, reduce stress concentration in the structure, improve overall stability, and reduce the risk of accidental failure.

[0039] Furthermore, the structure of the moving member 75 of the sliding mechanism is usually relatively simple, which is convenient for maintenance and replacement. Especially when worn, the moving member 75 can be inspected or replaced more easily, reducing the difficulty of maintenance.

[0040] Furthermore, through the movable member 75 of the sliding mechanism, the operator can conveniently adjust the height of the net door to adapt to different working environments and needs, thereby improving overall flexibility.

[0041] Furthermore, the moving member 75 of the sliding mechanism can occupy less assembly space, which helps to maintain the compactness of the overall structure of the trolley and is suitable for use in occasions with limited space.

[0042] like Figures 1 to 6 As shown, the first sliding portion 751 of this embodiment includes a sliding connecting sleeve arranged on the multi-functional connecting assembly 73, and a sliding hole 753 is provided in the sliding connecting sleeve. The second sliding portion 752 includes a sliding segment 754 corresponding to the sliding hole 753. The sliding connecting sleeve is sleeved on the outside of the sliding segment 754 through the sliding hole 753, and the sliding connecting sleeve can slide up and down along the sliding segment 754, thereby realizing relative up and down movement between the net door connecting assembly 71 and the side net connecting assembly 72.

[0043] When force is applied, the sliding connecting sleeve can move up and down along the sliding section 754, thereby driving the up and down displacement of the net door connecting assembly 71 or the side net connecting assembly 72 through the multi-functional connecting assembly 73. The precise fit between the sliding connecting sleeve and the sliding section 754 can ensure the stability and accuracy of the up and down displacement movement, reduce the jitter caused by the gap, and make the up and down displacement of the net door 101 relative to the trolley side net 2 more precise.

[0044] Furthermore, through the design of the sliding connection, the operator can more easily control the up and down movement of the mesh door 101, reducing complicated operating steps and improving work efficiency.

[0045] Furthermore, when the sliding connection sleeve moves on the sliding section 754, the friction is relatively small, which can effectively reduce the wear of the components, extend the service life, and reduce maintenance costs.

[0046] Furthermore, the design of the sliding connection sleeve can effectively disperse the pressure applied to the multifunctional connection assembly 73, making the overall structure more stable, reducing the risk of accidents during operation, and improving safety.

[0047] Furthermore, the design of the sliding connection sleeve and the sliding section 754 can occupy a smaller assembly space, which contributes to the compactness of the overall structure of the column rotating component 7, and is conducive to reducing the number of parts of the trolley and reducing its volume.

[0048] Furthermore, the structure of the sliding connection is relatively simple, which facilitates maintenance and replacement when necessary, reducing the workload of operators. Moreover, since the number and complexity of parts are reduced, the production and maintenance costs are relatively low, thereby improving economic benefits.

[0049] Preferably, in other embodiments, a slide rail, a roller or a slider structure can be used between the first sliding part 751 and the second sliding part 752. Taking the slide rail structure as an example, the first sliding part 751 and the second sliding part 752 are slide rails connected in a sliding manner, and a suitable design can be selected according to actual needs.

[0050] like Figures 1 to 6 As shown, the second sliding portion 752 of this embodiment also includes two first limiting protrusions 755 located at the upper and lower ends of the sliding section 754, respectively. Each of the first limiting protrusions 755 can interfere with the sliding connection sleeve to limit the highest and lowest sliding distances of the sliding connection sleeve on the sliding section 754. By setting the first limiting protrusions, the sliding distance of the sliding connection sleeve on the sliding section 754 is precisely limited, ensuring controllability and stability during movement.

[0051] Specifically, the design of the first limiting protrusion effectively prevents the sliding connection sleeve from moving up and down along the sliding section 754 for too long, thereby avoiding equipment damage caused by excessive sliding, extending the service life of the components, and by limiting the sliding distance, reducing safety hazards caused by misoperation, thereby ensuring the safety of operators during use.

[0052] Furthermore, through clear movement restrictions, the operator can more clearly understand the working range of the equipment. For example, when the sliding connection sleeve conflicts with the first limit protrusion on the upper end of the sliding section 754, the operator can clearly know that the net door 101 has reached the position of disengaging from the locking structure on the trolley, which means that the net door connection assembly 71 can rotate relative to the side net connection assembly 72, thereby realizing the opening or closing of the net door 101. This design ensures that the operator can grasp the position of the equipment in a timely manner during operation through a clear feedback mechanism, reducing the risk of misoperation.

[0053] When the sliding connecting sleeve collides with the first limit protrusion at the lower end of the sliding section 754, it also reminds the operator that the mesh door 101 has reached the position where it is locked with the locking structure on the trolley, or that the mesh door 101 has reached the specified position and remains in this position and no longer moves downward. This mechanism ensures that the mesh door can remain in a stable position when open and will not move downward accidentally due to gravity or other factors, thereby ensuring safety and stability, facilitating the normal operation of the mesh door 101 when the trolley is open, and enhancing the operator's overall confidence and comfort in operation.

[0054] Furthermore, the use of this limiting mechanism allows operators to more conveniently check and adjust the range of motion during debugging and maintenance without having to worry about the sliding parts exceeding the design range, thereby ensuring the long-term stable operation of the equipment. The design of the first limiting protrusion helps reduce maintenance and replacement costs during the long-term use of the mesh door 101, thereby improving economic benefits.

[0055] like Figures 1 to 6 As shown, the shape of the sliding hole 753 of this embodiment is the same as or similar to the outer contour shape of the sliding section 754. Preferably, the shape of the sliding hole 753 of this embodiment is polygonal, circular or elliptical, and the outer contour shape of the sliding section 754 is polygonal, circular or elliptical.

[0056] Preferably, circular and elliptical sliding holes can effectively reduce the friction during the sliding process, thereby improving the smoothness and flexibility of sliding and helping to extend the service life of the equipment.

[0057] The polygonal design can provide a better force transmission effect, and the outer contour shape of the polygonal sliding hole 753 and the sliding section 754 enables the sliding connection sleeve to slide up and down along the sliding section 754 more accurately, effectively improving the stability of the moving component 75 during operation and reducing vibration or deviation caused by asymmetry or imbalance.

[0058] Preferably, the selection of multiple shapes can make the installation process of the movable member 75 easier, facilitate the matching and docking with other connecting components, and improve the overall assembly efficiency.

[0059] The diverse shape options can not only meet functional requirements, but also enhance the appearance design of the equipment, making it more beautiful and in line with the aesthetic standards of modern industrial design.

[0060] Specifically, the rotating member 74 of this embodiment includes the sliding hole 753 and the sliding section 754. The sliding hole 753 is circular in shape, and the outer contour of the sliding section 754 is circular, so that the sliding connection sleeve can rotate relative to the sliding section 754 through the sliding hole 753. By adopting a circular sliding hole 753 and the outer contour of the sliding section 754 that matches it, the sliding connection sleeve can rotate freely and slide up and down in the sliding section 754.

[0061] Through this circular structure design, the sliding connecting sleeve can not only move up and down on the sliding section 754 (move along the axial direction of the sliding section 754 through the sliding hole 753), but also rotate relative to the sliding section 754 (rotate around the central axis of the sliding section 754). This design increases the freedom of movement and makes the equipment more flexible during operation.

[0062] Furthermore, this design allows the sliding sleeve to move in multiple directions on the sliding section 754, so that the moving member 75 and the rotating member 74 are integrated between the sliding sleeve and the sliding section 754, further increasing the functionality of the first sliding part 751 and the second sliding part 752.

[0063] Preferably, the circular design of the sliding hole 753 and the sliding section 754 can provide a uniform contact surface, which can reduce friction and wear during the sliding and rotation processes, reduce the risk of wear, and thus extend the service life of the equipment. In addition, this design makes the movement of the sliding connection sleeve smoother and more stable, reducing energy loss.

[0064] Furthermore, the circular design of the sliding hole 753 and the sliding section 754 can evenly distribute the load in all directions, reduce local stress concentration, reduce the risk of damage caused by uneven load, and ensure stable operation of the equipment.

[0065] like Figures 1 to 6 As shown, the rotating member 74 of this embodiment includes a first rotating part 741 and a second rotating part 742 rotatably connected thereto, the first rotating part 741 is arranged on the multi-functional connecting component 73, and the second rotating part 742 is arranged on the net door connecting component 71 or the side net connecting component 72. Under the coordinated action of the first rotating part 741 and the second rotating part 742, the net door connecting component 71 or the side net connecting component 72 can be rotated on the multi-functional connecting component 73, so that the net door connecting component 71 and the side net connecting component 72 can be able to rotate relative to each other.

[0066] like Figures 1 to 6 As shown, the first rotating part 741 of this embodiment includes a rotating connecting sleeve arranged on the multi-functional connecting component 73, and a rotating hole 743 is provided in the rotating connecting sleeve. The second rotating part 742 includes a rotating segment 744 corresponding to the rotating hole 743, and the rotating connecting sleeve can be rotatably mounted on the outer side of the rotating segment 744 through the rotating hole 743.

[0067] Specifically, the rotating connecting sleeve is arranged on the multifunctional connecting component 73 and has a built-in rotating hole 743. The rotating section 744 corresponds to the rotating hole 743. The rotating hole 743 allows the rotating connecting sleeve to rotate around the rotating section 744. When the rotating connecting sleeve rotates, the rotating section 744 can maintain a stable positioning.

[0068] Preferably, the rotating connecting sleeve simplifies the connection between the two through the cooperation of the rotating hole and the rotating section, reduces the complex mechanical structure, and makes the overall design more concise.

[0069] Furthermore, the design of the rotating connecting sleeve and the rotating section 744 can effectively reduce friction, improve the smoothness of rotation, reduce energy loss, and thus improve the overall movement efficiency.

[0070] Furthermore, the rotating connecting sleeve is sleeved on the outer side of the rotating section 744 , and both have good stability, ensuring that no excessive deviation or vibration occurs during the rotation process.

[0071] Furthermore, the rotating connecting sleeve and the rotating section have the advantage of a simple structure, and are relatively easy to maintain and adjust, and necessary inspections and maintenance can be carried out without disassembling the entire trolley.

[0072] like Figures 1 to 6 As shown, the second rotating portion 742 of this embodiment also includes two second limiting protrusions 745 located at the upper and lower ends of the rotating section 744 respectively. Each of the second limiting protrusions 745 is close to or abuts against the rotating connecting sleeve to limit the rotating connecting sleeve on the rotating section 744.

[0073] Specifically, the setting of the second limiting protrusion 745 can effectively limit the up and down movement of the rotating connecting sleeve, so that it maintains a stable position on the rotating section 744. By the second limiting protrusion 745 being close to or offset from the rotating connecting sleeve, the rotating connecting sleeve can be ensured to always be in a predetermined rotation trajectory during the rotation process. The limiting design can ensure that the rotating connecting sleeve rotates within a predetermined angle, making the motion trajectory more standardized and predictable, thereby improving the overall motion performance.

[0074] When the rotating connecting sleeve rotates on the rotating section 744, the second limiting protrusion 745 provides the necessary boundary to prevent the rotating connecting sleeve from accidentally displacing due to external force or inertia, thereby enhancing the stability of the structure. By limiting the range of motion of the rotating connecting sleeve, the risk of accidental falling off or loss of control is reduced, thereby improving the safety of the overall system.

[0075] Furthermore, since the rotating connecting sleeve will not easily shift obliquely or disengage, its maintenance and inspection process can be simplified, and there is no need to frequently adjust the position of the components, thereby reducing maintenance costs.

[0076] like Figures 1 to 6 As shown, the number of column rotating parts 7 in this embodiment is multiple, and the multiple column rotating parts 7 are spaced apart along the height direction of the trolley side net 2, and a linkage member 8 is provided between adjacent column rotating parts 7, and the two ends of each linkage member 8 are respectively connected to the corresponding multi-functional connecting component 73, and the multiple linkage members 8 can drive the multiple mobile members 75 to move up and down synchronously; or, the multiple linkage members 8 can drive the multiple mobile members 75 to move up and down synchronously, and drive the multiple rotating members 74 to rotate synchronously.

[0077] Specifically, the plurality of column rotating components 7 in this embodiment are spaced apart and distributed along the height direction of the trolley side net 2. This design can provide support and power over a larger range and enhance the stability of the overall system.

[0078] Adjacent column rotating components 7 are connected by linkage members 8, so that the movement of one column rotating component 7 can be transmitted to other column rotating components 7. The two ends of each linkage member 8 are respectively connected to the multi-functional connecting component 73 to realize the transmission of motion. The linkage member 8 is used to transmit the motion signal from one column rotating component to other components, so that multiple mobile components 75 can move up and down synchronously, and can also drive multiple rotating components 74 to rotate synchronously.

[0079] Through the linkage mechanism, the multiple column rotating parts 7, the moving components 75 and the rotating components 74 can achieve coordinated movement, thereby improving the operating efficiency and smoothness of the entire system.

[0080] Furthermore, the distribution of the plurality of column rotating components 7 provides better support, can effectively disperse the load, reduce the risk of failure of a component due to overload, and enhance the stability of the entire structure.

[0081] Furthermore, through the synchronous movement of multiple column rotating parts, the operator can achieve the up and down movement and / or rotation of the net door 101 relative to the trolley side net 2 through simple control, which simplifies the operation difficulty and improves the convenience of use.

[0082] Preferably, the linkage member 8 includes a linkage rod, and both ends of the linkage rod are respectively connected to corresponding multifunctional connecting components 73.

[0083] Preferably, the multifunctional connecting assembly 73 in this embodiment includes a connecting seat, one side of which is connected to the rotating connecting sleeve, and the other side of which is connected to the sliding connecting sleeve.

[0084] Preferably, the connecting seat, rotating connecting sleeve and sliding connecting sleeve are of an integrally formed design, which has the advantage of high structural strength. In other embodiments, the connecting seat, rotating connecting sleeve and sliding connecting sleeve are detachable connecting structures, and a suitable design can be selected according to actual needs.

[0085] Preferably, in this embodiment, the side net connection assembly 72 includes a side net connection sleeve fixedly mounted on the column of the trolley side net 2, the sliding section 754 and the two first limiting protrusions 755 are arranged on the outer side wall of the side net connection sleeve, and the sliding connection sleeve is sleeved on the outer side of the sliding section 754 through the sliding hole 753, that is, sleeved on the outer side wall of the side net connection sleeve, and by adopting the circular sliding hole 753 and the outer contour shape of the sliding section 754 matching therewith, the sliding connection sleeve can freely rotate and slide up and down on the side net connection sleeve;

[0086] The net door connecting assembly 71 includes a net door connecting sleeve fixedly mounted on the upright post of the net door 101. The rotating section 744 and the two second limiting protrusions 745 are arranged on the outer side wall of the net door connecting sleeve, so that the rotating connecting sleeve is sleeved on the outer side of the rotating section 744. That is, the rotating connecting sleeve is sleeved on the outer side of the net door connecting sleeve, so that the rotating connecting sleeve can rotate freely on the net door connecting sleeve.

[0087] By adopting the above design, the mesh door 101 can be rotated relative to the trolley side net 2 through the cooperation of the mesh door connecting sleeve and the rotating connecting sleeve, and the mesh door 101 can also be cooperated with the side net connecting sleeve through the sliding connecting sleeve, and the sliding connecting sleeve drives the mesh door 101 through the connecting seat and the rotating connecting sleeve, so that it can be moved up and down relative to the trolley side net 2. Furthermore, the sliding connecting sleeve of this embodiment can also rotate freely relative to the side net connecting sleeve, that is, it can also drive the mesh door 101 to further rotate relative to the trolley side net through the connecting seat and the rotating connecting sleeve. Through the double rotation mechanism, the rotation angle of the mesh door 101 relative to the trolley side net can be further expanded to facilitate the operator to open the mesh door 101.

[0088] In other embodiments, the rotating member 74 only includes the sliding hole 753 and the sliding section 754, and by adopting a circular sliding hole 753 and a matching outer contour shape of the sliding section 754, the sliding connecting sleeve can freely rotate and slide up and down on the side net connecting sleeve, and the net door connecting sleeve is fixedly connected to the multi-functional connecting assembly 73 (i.e., the connecting seat), and through the cooperation of the sliding connecting sleeve and the sliding section 754, the multi-functional connecting assembly 73 is driven to rotate and move up and down relative to the trolley side net 2, so as to realize the rotation and up and down displacement of the net door 101 relative to the trolley side net 2. The appropriate design can be selected according to actual needs.

[0089] In other embodiments, the rotating member 74 only includes a first rotating part 741 and a second rotating part 742 rotatably connected thereto, and the sliding connection sleeve can only move up and down along the sliding section 754 and cannot rotate (for example, the sliding hole 753 uses a special-shaped hole, such as a polygonal or elliptical sliding hole 753), so that the rotating member 74 realizes the rotation of the mesh door 101 relative to the trolley side mesh 2, and the moving member 75 realizes the relative up and down displacement of the mesh door 101. The appropriate design can be selected according to actual needs.

[0090] In other embodiments, the side net connection assembly 72 includes a side net connection sleeve fixedly mounted on the column of the trolley side net 2, the rotating member 74 is arranged between the multifunctional connection assembly 73 and the side net connection sleeve, the net door connection assembly 71 includes a net door connection sleeve fixedly mounted on the column of the net door 101, and the movable member 75 is arranged between the multifunctional connection assembly 73 and the net door connection sleeve. The appropriate design can be selected according to actual needs.

[0091] like Figures 1 to 6 As shown, a trolley of the present embodiment includes a trolley side net 2, a net door 101 and a column rotation structure applied to the trolley as described in any one of the above items, the net door 101 is connected to the net door connecting assembly 71, the trolley side net 2 is connected to the side net connecting assembly 72, the net door connecting assembly 71 can be relatively displaced upward on the side net connecting assembly 72 through the moving member 75, so that the net door 101 is converted to an unlocked state on the trolley side net 2, and the net door connecting assembly 71 can be relatively rotated on the side net connecting assembly 72 through the rotating member 74 to drive the net door 101 in the unlocked state to rotate on the trolley side net 2.

[0092] Specifically, the trolley also includes a trolley base 1, and a locking structure is provided between the trolley base 1 and the net door 101. When unlocking is required, the operator can first lift the net door 101 upwards. At this time, the net door connecting assembly 71 can be relatively displaced upward on the side net connecting assembly 72 through the moving member 75, unlocking the locking structure so that the net door 101 is converted to an unlocked state on the trolley side net 2. At this time, the operator can rotate the net door 101, and the net door connecting assembly 71 can be relatively rotated on the side net connecting assembly 72 through the rotating member 74 to drive the net door 101 in the unlocked state to rotate on the trolley side net 2, so that the net door 101 is opened on the trolley 100.

[0093] When locking is required, the operator can rotate the net door 101 to the specified position, and the net door connecting assembly 71 can be relatively displaced downward on the side net connecting assembly 72 through the moving component 75, so that the locking structure is locked, so that the net door 101 is converted to a locked state on the trolley side net 2.

[0094] Preferably, the locking structure includes a lock hole and a lock pin. When the net door connecting assembly 71 is relatively displaced upward on the side net connecting assembly 72 via the moving member 75, the lock pin is disengaged from the lock hole, and the locking structure is unlocked. After the net door 101 is rotated at a certain angle so that the lock pin and the lock hole are not aligned, the net door 101 can be lowered, and the net door connecting assembly 71 is relatively displaced downward on the side net connecting assembly 72 via the moving member 75.

[0095] When the operator can rotate the net door 101 to a certain position, lift the net door 101 again, and continue to rotate the net door 101 to the specified position, that is, after the locking pin and the lock hole are aligned, the net door 101 can be lowered, and the net door connecting assembly 71 is relatively moved downward on the side net connecting assembly 72 through the moving member 75. At this time, the locking pin is stuck in the lock hole to achieve the locking of the net door 101. It has the advantages of simple structure and easy operation. By adopting the above-mentioned column rotation structure, the structure of the trolley is more compact, the design of the trolley is more simple, and it is conducive to reducing the size of the trolley.

[0096] The above examples are merely used to further illustrate the technical content of the present invention for easier understanding by the reader. However, they do not limit the implementation of the present invention to these examples. Any technical extension or reinvention based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A column rotating structure applied to a trolley, characterized in that: The invention comprises at least one column rotating component (7), each of the column rotating components (7) comprising a net door connecting component (71) connected to the net door (101), a side net connecting component (72) connected to the trolley side net (2), and a multifunctional connecting component (73) respectively connected to the net door connecting component (71) and the side net connecting component (72), wherein the multifunctional connecting component (73) is provided with a rotating member (74) capable of relatively rotating the net door connecting component (71) and the side net connecting component (72), and a moving member (75) capable of relatively moving the net door connecting component (71) and the side net connecting component (72) up and down.

2. The column rotating structure applied to a trolley according to claim 1, characterized in that: The movable member (75) comprises a first sliding portion (751) and a second sliding portion (752) slidably connected thereto, wherein the first sliding portion (751) is provided on the multifunctional connecting assembly (73), and the second sliding portion (752) is provided on the net door connecting assembly (71) or the side net connecting assembly (72).

3. The column rotating structure applied to a trolley according to claim 2, characterized in that: The first sliding portion (751) includes a sliding connection sleeve provided on the multifunctional connection assembly (73), wherein a sliding hole (753) is provided in the sliding connection sleeve, and the second sliding portion (752) includes a sliding section (754) corresponding to the sliding hole (753), wherein the sliding connection sleeve is sleeved on the outside of the sliding section (754) through the sliding hole (753), and the sliding connection sleeve can slide up and down along the sliding section (754).

4. The column rotating structure applied to a trolley according to claim 3, characterized in that: The second sliding portion (752) further includes two first limiting protrusions (755) located at the upper and lower ends of the sliding section (754), respectively. Each of the first limiting protrusions (755) can abut against the sliding connection sleeve to limit the sliding distance of the sliding connection sleeve on the sliding section (754).

5. The column rotating structure applied to a trolley according to claim 3, characterized in that: The rotating member (74) comprises the sliding hole (753) and the sliding section (754); the shape of the sliding hole (753) is the same as or similar to the outer contour of the sliding section (754); the shape of the sliding hole (753) is circular; the outer contour of the sliding section (754) is circular, so that the sliding connection sleeve can rotate relative to the sliding section (754) through the sliding hole (753).

6. A column rotating structure for a trolley according to any one of claims 1 to 5, characterized in that: The rotating member (74) comprises a first rotating portion (741) and a second rotating portion (742) rotatably connected thereto, wherein the first rotating portion (741) is provided on the multifunctional connecting assembly (73), and the second rotating portion (742) is provided on the net door connecting assembly (71) or the side net connecting assembly (72).

7. The column rotating structure applied to a trolley according to claim 6, characterized in that: The first rotating part (741) comprises a rotating connection sleeve provided on the multifunctional connection assembly (73), wherein a rotating hole (743) is provided in the rotating connection sleeve, and the second rotating part (742) comprises a rotating section (744) corresponding to the rotating hole (743), wherein the rotating connection sleeve is rotatably sleeved on the outer side of the rotating section (744) through the rotating hole (743).

8. The column rotating structure applied to a trolley according to claim 7, characterized in that: The second rotating portion (742) further includes two second limiting protrusions (745) located at the upper and lower ends of the rotating section (744), respectively. Each of the second limiting protrusions (745) is close to or abuts against the rotating connecting sleeve, so as to limit the rotating connecting sleeve on the rotating section (744).

9. The column rotating structure applied to a trolley according to claim 1, characterized in that: There are multiple column rotating parts (7), and the multiple column rotating parts (7) are spaced apart along the height direction of the trolley side net (2), and a linkage member (8) is provided between adjacent column rotating parts (7), and both ends of each linkage member (8) are respectively connected to the corresponding multifunctional connecting assembly (73), and the multiple linkage members (8) can drive the multiple moving members (75) to move up and down synchronously; or, the multiple linkage members (8) can drive the multiple moving members (75) to move up and down synchronously, and drive the multiple rotating members (74) to rotate synchronously.

10. A trolley, characterized in that: It comprises a trolley side net (2), a net door (101) and a column rotation structure applied to a trolley as described in any one of claims 1 to 9, wherein the net door (101) is connected to the net door connecting component (71), and the trolley side net (2) is connected to the side net connecting component (72), and the net door connecting component (71) can be relatively displaced upward on the side net connecting component (72) through a moving component (75) so that the net door (101) is converted to an unlocked state on the trolley side net (2), and the net door connecting component (71) can be relatively rotated on the side net connecting component (72) through a rotating component (74) to drive the net door (101) in the unlocked state to rotate on the trolley side net (2).

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