Suspension assembly, base structure and container

Abstract

The utility model provides a kind of hanging shaft assembly, box bottom structure and container.The hanging shaft assembly includes shaft sleeve, hanging shaft and first limiting piece.Shaft sleeve is suitable for being connected to the chassis of container.Hanging shaft is movably arranged in shaft sleeve along the axial direction of shaft sleeve.The size of hanging shaft along axial direction is greater than the size of shaft sleeve along axial direction.Hanging shaft has opposite outer end and inner end along axial direction.Outer end is suitable for being directed to the outside of chassis.Outer end is provided with force connection part.Forced connection part is suitable for being screwed to auxiliary pulling piece.First limiting piece is connected to inner end.In the plane perpendicular to axial direction, the orthographic projection of first limiting piece is at least partially located outside the orthographic projection of shaft sleeve.First limiting piece is used to abut against shaft sleeve to prevent hanging shaft from exiting shaft sleeve.The utility model is provided with force connection part on the outer end of hanging shaft, which facilitates the application of force to hanging shaft by auxiliary pulling piece, and achieves the purpose of pulling out hanging shaft.

Description

Technical Field

[0001] This utility model relates generally to the technical field of containers, and more specifically to a lifting shaft assembly, a container bottom structure, and a container. Background Technology

[0002] With the expansion of applications for special containers, their structural design needs to adapt to diverse lifting requirements. Traditional containers rely on corner brackets and specialized equipment for vertical lifting, but special containers, due to non-standard dimensions or operational limitations (such as the lack of specialized lifting equipment), require a lifting shaft structure on the underframe for transfer via a truck crane. Existing lifting shaft structures have the following technical defects: when the clearance between the lifting shaft and the bushing is too small, a sticky effect easily occurs after the paint cures, resulting in a significant increase in pulling resistance.

[0003] Therefore, there is a need to provide a lifting shaft assembly, a bottom structure, and a container to at least partially solve the above problems. Utility Model Content

[0004] The present invention includes a series of simplified concepts, which will be further explained in detail in the detailed description section. This present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the first aspect of this utility model provides a lifting shaft assembly, the lifting shaft assembly comprising:

[0006] A bushing, the bushing being adapted for connection to the underframe of a container; and

[0007] A lifting shaft is movably inserted into the bushing along the axial direction. The dimension of the lifting shaft along the axial direction is larger than the dimension of the bushing along the axial direction. The lifting shaft has an outer end and an inner end facing opposite directions along the axial direction. The outer end is adapted to face the outside of the base frame. The outer end is provided with a force-applying connection portion, which is adapted to be screwed to an auxiliary pull-out component.

[0008] According to the first aspect of the present invention, the lifting shaft assembly has a force-applying connecting part at the outer end of the lifting shaft. This connecting part can be connected to an auxiliary pulling member when the lifting shaft needs to be pulled out, thereby applying force to the lifting shaft with the aid of the auxiliary pulling member to achieve the purpose of pulling out the lifting shaft. By adopting the above solution, the technical problem of "when the gap between the lifting shaft and the bushing is too small, a sticky effect easily occurs after the paint cures, leading to a significant increase in pulling resistance" can be solved.

[0009] Optionally, the force-applying connection is a threaded hole.

[0010] Optionally, the lifting shaft assembly further includes:

[0011] A second limiting member is connected to the outer end and protrudes from the outer circumferential surface of the lifting shaft. The second limiting member is adapted to be detachably connected to the base frame.

[0012] Optionally, the second limiting member has a first mounting hole, which is adapted to pass through a first fastener so as to fasten the second limiting member to the base frame.

[0013] Optionally, the first mounting hole is a countersunk hole.

[0014] Optionally, the lifting shaft assembly further includes:

[0015] A third limiting member is adapted to be pivotally connected to the base frame about a rotation axis parallel to the lifting shaft between a blocking position and a yielding position. The third limiting member in the blocking position is axially limited to the second limiting member to prevent the lifting shaft from moving along the axial direction. The third limiting member in the yielding position avoids the second limiting member to allow the lifting shaft to move along the axial direction.

[0016] Optionally, the lifting shaft assembly further includes:

[0017] A first limiting member is detachably connected to the inner end, and in a plane perpendicular to the axial direction, the orthographic projection of the first limiting member is at least partially located outside the orthographic projection of the bushing. The first limiting member is used to abut against the bushing to prevent the lifting shaft from exiting the bushing.

[0018] Optionally, the first limiting member has a second mounting hole;

[0019] The inner end of the lifting shaft is provided with a connecting hole;

[0020] The hanger assembly further includes a second fastener that passes through the second mounting hole and is screwed to the connection hole to secure the first limiting member to the hanger.

[0021] A second aspect of this utility model provides a box bottom structure, the box bottom structure comprising:

[0022] The base frame includes a bottom side beam, and the bottom side beam has a third mounting hole.

[0023] In the aforementioned hanging shaft assembly, the bushing passes through the third mounting hole and is fixed to the bottom side beam.

[0024] According to the box bottom structure of the second aspect of this utility model, by applying the above-mentioned lifting shaft assembly, force can be applied to the lifting shaft while the auxiliary pull-out member is connected to the force-applying connection part of the lifting shaft, thereby achieving the purpose of pulling out the lifting shaft. This prevents destructive disassembly of the lifting shaft and extends the service life of the lifting shaft and the base frame. Moreover, by adopting the above solution, it is convenient to realize the lifting operation of the box bottom structure.

[0025] Optionally, the lifting shaft assembly includes a first limiting member, which is detachably connected to the inner end.

[0026] The base frame has an interior cavity suitable for accommodating at least the first limiting member, and the bottom of the base frame has an operating port at a position corresponding to the accommodating cavity, the operating port allowing at least the first limiting member to pass through.

[0027] The third aspect of this utility model provides a container, which includes the aforementioned bottom structure.

[0028] According to the container of the third aspect of this utility model, by applying the above-mentioned container bottom structure, it is possible to achieve the purpose of pulling out the lifting shaft while preventing damage to the container bottom structure, thus extending the service life of the chassis and even the container. Moreover, by adopting the above solution, it is convenient to carry out the lifting operation of the container. Attached Figure Description

[0029] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0030] Figure 1 This is a perspective view of the box bottom structure according to one embodiment of the present invention;

[0031] Figure 2 This is a perspective view of a suspension shaft assembly according to one embodiment of the present invention.

[0032] Figure 3 This is a perspective view of a suspension shaft assembly according to one embodiment of the present invention;

[0033] Figure 4 for Figure 1 An enlarged view of part I in the image;

[0034] Figure 5 This is a partial structural diagram of the box bottom structure according to another embodiment of the present invention;

[0035] Figure 6This is a cross-sectional view of the box bottom structure according to one embodiment of the present utility model, in a portion corresponding to the hanging shaft assembly. In the figure, the first limiting member is connected to the hanging shaft, and the second limiting member is connected to the base frame.

[0036] Figure 7 This is another sectional view of the box bottom structure according to one embodiment of the present utility model, in the part corresponding to the hanging shaft assembly. In the figure, the first limiting member is connected to the hanging shaft, and the second limiting member is separated from the base frame.

[0037] Figure 8 This is another sectional view of the box bottom structure according to one embodiment of the present invention, in a portion corresponding to the hanging shaft assembly. In the view, the first limiting member is separated from the hanging shaft, and the second limiting member is separated from the base frame; and

[0038] Figure 9 This is a perspective view of the bottom structure of the box according to one embodiment of the present invention, in a portion corresponding to the hanging shaft assembly, from a downward angle.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100: Box bottom structure; 101: First fastener

[0041] 110: Hanging shaft assembly; 111: Shaft sleeve

[0042] 112: Hanging shaft; 112a: Outer end.

[0043] 112b: Inner end portion; 112c: Force-applying connection portion

[0044] 112d: Connecting hole; 113: First limiting member

[0045] 114: Second limiting component; 114a: First mounting hole

[0046] 115: Third limiting component; 116: Second fastener

[0047] 120: Base frame; 121: Bottom side beam

[0048] 121a: Third mounting hole; 122: Receiving cavity

[0049] 123: Operating port AX: Rotation axis

[0050] Dax: Axial direction; D1: Length direction

[0051] D2: Width direction; D3: Height direction Detailed Implementation

[0052] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0053] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0054] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0055] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0056] The terms “center,” “parallel,” “perpendicular,” “aligned,” and “symmetrical” used in this invention do not have to be precise, but can include typical engineering tolerances.

[0057] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0058] With the development of the specialized container industry, the application scenarios of containers are becoming increasingly widespread. Traditional containers are transferred within the manufacturing plant or hoisted at the dock using specialized lifting equipment that lifts them vertically via corner brackets. However, some specialized containers differ from standard containers in shape and size, making conventional lifting equipment unsuitable. Furthermore, their application scenarios lack specialized lifting equipment, and custom-made lifting frames cannot be used continuously with the container. In these cases, a lifting shaft structure must be installed on the container's underframe, allowing for lifting and transfer via a truck crane.

[0059] The existing lifting shaft structure has the following problems: 1. When the gap between the lifting shaft and the bushing is small, it is difficult to pull the lifting shaft after painting; 2. When the gap between the lifting shaft and the bushing is large, the container is prone to loosening during transportation and causing damage by colliding with the surroundings; 3. If the container needs to be certified for maritime transport, the lifting shaft must not extend beyond the surface of the corner fitting.

[0060] To address the aforementioned issues with container lifting shaft structures, a new container lifting shaft structure is needed. This structure facilitates the pulling of the lifting shaft, prevents it from becoming loose, and allows it to remain within the corner fittings through a detachable feature, thus meeting maritime certification requirements.

[0061] This utility model provides a lifting shaft assembly, a container bottom structure, and a container. The lifting shaft assembly can solve the above-mentioned problems in the prior art. See below for details. Figures 1 to 9 Examples are provided to illustrate the lifting shaft assembly, bottom structure, and container according to the present invention.

[0062] See Figures 2 to 8 An embodiment of this utility model provides a hanging shaft assembly 110. The hanging shaft assembly 110 includes a bushing 111, a hanging shaft 112, and a first limiting member 113.

[0063] The bushing 111 is adapted to be connected to the underframe 120 of the container. A lifting shaft 112 is movably inserted within the bushing 111 along the axial direction Dax. The dimension of the lifting shaft 112 along the axial direction Dax is larger than the dimension of the bushing 111 along the axial direction Dax. The lifting shaft 112 has an outer end 112a and an inner end 112b facing opposite directions along the axial direction Dax. The outer end 112a is adapted to face outwards from the underframe 120. The outer end 112a has a force-applying connection portion 112c. The force-applying connection portion 112c is adapted to be screwed to an auxiliary pull-out component.

[0064] According to the embodiment of the present invention, the hanging shaft assembly 110 provides a force-applying connecting part 112c at the outer end 112a of the hanging shaft 112. This allows the force-applying connecting part 112c to be connected to an auxiliary pull-out component when the hanging shaft 112 needs to be pulled out. The auxiliary pull-out component then applies force to the hanging shaft 112, achieving the purpose of pulling the hanging shaft 112 out. By adopting the above solution, the technical problem of "when the gap between the hanging shaft 112 and the bushing 111 is too small, a sticky effect easily occurs after the paint cures, leading to a significant increase in pulling resistance" can be solved.

[0065] See Figure 2 In some embodiments, the force-applying connection 112c is a threaded hole. The threaded hole can be used to connect auxiliary pull-out components such as lifting rings with screws. By applying a pulling force along the axial direction Dax of the lifting shaft 112 to the auxiliary pull-out component such as the lifting ring, it is easier to pull the lifting shaft 112 out of the bushing 111.

[0066] Optionally, the centerline of the threaded hole coincides with the axis of the lifting shaft 112.

[0067] In some embodiments not shown, the force-applying connection 112c is a hook structure. This hook structure does not protrude from the outer end 112a. The hook structure includes a groove recessed along the axial direction Dax of the lifting shaft 112 and a connecting strip spanning the groove. The connecting strip is adapted to be hooked by a hook, thereby facilitating the application of force to the lifting shaft 112 along the axial direction Dax to achieve the purpose of pulling out the lifting shaft 112.

[0068] In some other embodiments, the force-applying connection 112c may also be other structures besides those described above.

[0069] See Figures 1 to 4 In some embodiments, the hanger shaft assembly 110 further includes a second limiting member 114. The second limiting member 114 is connected to the outer end portion 112a. The second limiting member 114 protrudes from the outer circumferential surface of the hanger shaft 112. The second limiting member 114 is adapted to be detachably connected to the base frame 120. When applied to the base frame 120, the second limiting member 114 can be connected to the base frame 120, thereby constraining the hanger shaft 112 to prevent it from being in a free state that allows it to move or sway relative to the bushing 111. This helps to prevent the hanger shaft 112 from impacting and wearing under dynamic loads, while also better ensuring the theoretical design clearance of the hanger shaft 112.

[0070] See Figures 2 to 4 Furthermore, the second limiting member 114 has a first mounting hole 114a. The first mounting hole 114a is suitable for inserting a first fastener 101 to secure the second limiting member 114 to the base frame 120. Here, the first fastener 101 is used to secure the second limiting member 114 to the base frame 120, achieving a detachable connection between the second limiting member 114 and the base frame 120, which is convenient. The first fastener 101 can be a threaded connector such as a screw or bolt. Correspondingly, a threaded hole or a nut can be provided on the base frame 120 to mate with it.

[0071] Optionally, the first mounting hole 114a is a countersunk hole. By setting the first mounting hole 114a as a countersunk hole, it is beneficial to hide structures such as screw heads, thereby preventing the first fastener 101 from protruding from the outer surface of the second limiting member 114 when fully tightened, and thus reducing the space occupied by the first fastener 101 on the external space of the base frame 120.

[0072] See Figure 5In other embodiments, the hanger assembly 110 further includes a third limiting member 115. The third limiting member 115 is adapted to be pivotally connected to the base frame 120 about a rotation axis AX parallel to the hanger 112, between a blocking position and a yielding position. In the blocking position, the third limiting member 115 engages with the second limiting member 114 along the axial direction Dax to prevent movement of the hanger 112 along the axial direction Dax. In the yielding position, the third limiting member 115 avoids the second limiting member 114 to allow movement of the hanger 112 along the axial direction Dax. By providing a pivotable third limiting member 115, the second limiting member 114 can be limited when the third limiting member 115 is pivoted to the blocking position, thereby preventing movement of the hanger 112 relative to the bushing 111 along the axial direction Dax.

[0073] Preferably, when applied to the base frame 120, the third limiting member 115 is adapted to be positioned above the lifting shaft 112. In this way, by reasonably counterweighting the third limiting member 115, when the third limiting member 115 is pivoted to the blocking position, the weight of the free end of the third limiting member 115 can be used to better hold the third limiting member 115 in the blocking position.

[0074] Optionally, the second limiting member 114 described above is a metal plate. The second limiting member 114 is fixed to the outer circumferential surface of the lifting shaft 112 by welding or other means. The outer end 112a of the lifting shaft 112 is flush with the outer surface of the second limiting member 114 that is adapted to be away from the base frame 120.

[0075] See Figure 2 , Figure 3 ,as well as Figures 6 to 8 In some embodiments, the first limiting member 113 is detachably connected to the inner end 112b. In a plane perpendicular to the axial direction Dax, the orthographic projection of the first limiting member 113 is at least partially located outside the orthographic projection of the bushing 111. The first limiting member 113 abuts against the bushing 111 to prevent the lifting shaft 112 from exiting the bushing 111. When it is necessary to disassemble the lifting shaft 112, it is removed from the bushing 111 by removing the first limiting member 113, thereby enabling the lifting shaft 112 to be pulled out of the bushing 111, thus achieving the removal of the lifting shaft 112. By detachably installing the first limiting member 113 to the lifting shaft 112, it facilitates the disassembly of the lifting shaft 112 when it extends beyond the corner fitting surface and does not meet maritime certification requirements, thus solving the problem of the lifting shaft 112 extending beyond the corner fitting surface.

[0076] See Figure 3 , Figures 6 to 8Furthermore, the first limiting member 113 has a second mounting hole (not shown). The inner end 112b of the hanging shaft 112 has a connecting hole 112d. The hanging shaft assembly 110 also includes a second fastener 116. The second fastener 116 passes through the second mounting hole and is screwed to the connecting hole 112d to fasten the first limiting member 113 to the hanging shaft 112. Since the first limiting member 113 and the hanging shaft 112 are fastened together by the second fastener 116, the first limiting member 113 can be separated from the hanging shaft 112 after the second fastener 116 is loosened and removed.

[0077] Optionally, the second mounting hole is a through hole. The connecting hole 112d is a threaded hole. The second fastener 116 is a fastener with external threads, such as a screw or bolt.

[0078] Optionally, the first limiting member 113 mentioned above is a metal plate.

[0079] See Figure 1 , Figures 4 to 9 This utility model provides a box bottom structure 100. The box bottom structure 100 includes a base frame 120 and the aforementioned hanging shaft assembly 110. The base frame 120 includes a bottom side beam 121. The bottom side beam 121 has a third mounting hole 121a. A bushing 111 passes through the third mounting hole 121a. The bushing 111 is fixed to the bottom side beam 121. The axial direction Dax of the bushing 111 is parallel to the width direction D2 of the base frame 120.

[0080] According to the embodiment of the present invention, the box bottom structure 100, by applying the aforementioned lifting shaft assembly 110, allows force to be applied to the lifting shaft 112 while the auxiliary pull-out member is connected to the force-applying connection part 112c of the lifting shaft 112, thereby achieving the purpose of pulling out the lifting shaft 112. This prevents destructive disassembly of the lifting shaft 112 and extends the service life of the lifting shaft 112 and the base frame 120. Moreover, by adopting the above solution, it is convenient to carry out the lifting operation of the box bottom structure 100.

[0081] See Figure 1 Optionally, the base frame 120 has two bottom side beams 121. The two bottom side beams 121 are arranged at intervals along the width direction D2 of the base frame 120.

[0082] Continue reading Figure 1 Optionally, each bottom side beam 121 is provided with two hanger shaft assemblies 110. The two hanger shaft assemblies 110 are arranged at intervals along the length direction D1 of the base frame 120. The two hanger shaft assemblies 110 are arranged symmetrically about the length direction D1 of the base frame 120.

[0083] Optionally, the third mounting hole 121a serves as a positioning hole for the bushing 111. After the bushing 111 is installed into the third mounting hole 121a, the outer end face of the bushing 111 is flush with the outer surface of the bottom side beam 121, and the bushing 111 is fixed to the bottom side beam 121 by welding.

[0084] See Figures 6 to 9 In some embodiments, the lifting shaft assembly 110 includes a first limiting member 113. The first limiting member 113 is detachably connected to the inner end portion 112b. The interior of the base frame 120 forms a receiving cavity 122 adapted to accommodate at least the first limiting member 113. An operating port 123 is provided at the bottom of the base frame 120 at a position corresponding to the receiving cavity 122. The bottom of the base frame 120 is the bottom of the base frame 120 in the height direction D3 when in use. The operating port 123 allows at least the first limiting member 113 to pass through. The operating port 123 facilitates the disassembly and assembly of the first limiting member 113. When disassembling the first limiting member 113, the base frame 120 needs to be lifted or hoisted first, and then the operator can disassemble the first limiting member 113 from below the base frame 120 through the operating port 123.

[0085] Continue reading Figures 6 to 9 Optionally, the inner end face of the bushing 111 protrudes from the mounting hole and extends into the receiving cavity 122.

[0086] Furthermore, to improve the sealing and aesthetics of the base frame 120, a removable cover plate (not shown) can be provided at the operating port 123 to cover the operating port 123. When it is necessary to disassemble or assemble the first limiting member 113, the cover plate is removed; after the first limiting member 113 is assembled or disassembled, the cover plate is put back in its original position.

[0087] During production, the bushing 111 is welded to the base frame 120 as a single unit. The second limiting member 114 is welded to the lifting shaft 112, passes through the bushing 111, and is connected to the first limiting member 113 by bolts to form the lifting shaft assembly 110. Countersunk bolts are used to connect the lifting shaft assembly 110 to the base frame 120 through the countersunk holes of the second limiting member 114, thereby rigidly fixing the lifting shaft assembly 110. When the lifting shaft 112 extends beyond the surface of the corner piece but marine certification is required, the lifting shaft 112 can be removed by disassembling the bolts to the first limiting member 113 and the bolts to the base frame 120.

[0088] An embodiment of this utility model provides a container, which includes the aforementioned container bottom structure 100.

[0089] According to the embodiments of this utility model, by applying the aforementioned container bottom structure 100, the purpose of pulling out the lifting shaft 112 can be achieved while preventing damage to the container bottom structure 100, thus extending the service life of the base frame 120 and even the container itself. Moreover, by adopting the above solution, it is convenient to carry out container lifting operations.

[0090] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0091] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A lifting shaft assembly, characterized in that, The lifting shaft assembly includes: A bushing, the bushing being adapted for connection to the underframe of a container; and A lifting shaft is movably inserted into the bushing along the axial direction. The dimension of the lifting shaft along the axial direction is larger than the dimension of the bushing along the axial direction. The lifting shaft has an outer end and an inner end facing opposite directions along the axial direction. The outer end is adapted to face the outside of the base frame. The outer end is provided with a force-applying connection portion, which is adapted to be screwed to an auxiliary pull-out component.

2. The lifting shaft assembly according to claim 1, characterized in that, The force-applying connection part is a threaded hole.

3. The lifting shaft assembly according to claim 1, characterized in that, The lifting shaft assembly also includes: A second limiting member is connected to the outer end and protrudes from the outer circumferential surface of the lifting shaft. The second limiting member is adapted to be detachably connected to the base frame.

4. The lifting shaft assembly according to claim 3, characterized in that, The second limiting member has a first mounting hole, which is adapted to insert a first fastener so as to fasten the second limiting member to the base frame.

5. The lifting shaft assembly according to claim 3, characterized in that, The lifting shaft assembly also includes: A third limiting member is adapted to be pivotally connected to the base frame about a rotation axis parallel to the lifting shaft between a blocking position and a yielding position. The third limiting member in the blocking position is axially limited to the second limiting member to prevent the lifting shaft from moving along the axial direction. The third limiting member in the yielding position avoids the second limiting member to allow the lifting shaft to move along the axial direction.

6. The suspension shaft assembly according to any one of claims 1 to 5, characterized in that, The lifting shaft assembly also includes: A first limiting member is detachably connected to the inner end, and in a plane perpendicular to the axial direction, the orthographic projection of the first limiting member is at least partially located outside the orthographic projection of the bushing. The first limiting member is used to abut against the bushing to prevent the lifting shaft from exiting the bushing.

7. The lifting shaft assembly according to claim 6, characterized in that, The first limiting member has a second mounting hole; The inner end of the lifting shaft is provided with a connecting hole; The hanger assembly further includes a second fastener that passes through the second mounting hole and is screwed to the connection hole to secure the first limiting member to the hanger.

8. A box bottom structure, characterized in that, The bottom structure of the box includes: The base frame includes a bottom side beam, and the bottom side beam has a third mounting hole. According to any one of claims 1 to 7, the bushing passes through the third mounting hole and is fixed to the bottom side beam.

9. The box bottom structure according to claim 8, characterized in that, The lifting shaft assembly includes a first limiting member, which is detachably connected to the inner end. The base frame has an interior cavity suitable for accommodating at least the first limiting member, and the bottom of the base frame has an operating port at a position corresponding to the accommodating cavity, the operating port allowing at least the first limiting member to pass through.

10. A container, characterized in that, The container includes the container bottom structure according to claim 8 or 9.

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