Detachable short column assembly and container having the same

Abstract

The present application provides a detachable short column assembly, which is used to be fixed to the top corner fitting of a container, and includes a fixing portion and a locking portion. The fixing portion includes a short column and a stacking plate, and the interior of the short column has a hollow chamber; the stacking plate is arranged at the bottom end of the short column, and the stacking plate has a first through hole; the locking portion includes a wedge block and a rotary lock shaft, and the wedge block is arranged in the hollow chamber of the short column; the rotary lock shaft includes a plurality of rotary lock pieces, which are stacked and connected as a whole, each rotary lock piece having a wedge-shaped hole, and the plurality of wedge-shaped holes together form a wedge-shaped channel, which is adapted to the wedge block. The top end of the rotary lock shaft extends into the hollow chamber of the short column through the first through hole, and the detachable short column assembly is rotated so that the bottom end of the rotary lock shaft is clamped on the inner side wall of the top corner fitting. The detachable short column assembly of the present application has the advantages of high manufacturing efficiency and economic cost savings.

Description

Technical Field

[0001] The present application generally relates to the technical field of platform-type container structures, and more particularly to a detachable short-post assembly and a container having the same. Background Art

[0002] Currently, existing short poles are typically installed on top of a platform container or platform box to increase the loading height of the platform container, allowing docks to hoist and stack heavily loaded folding containers. The detachable short poles include top corner pieces, stacking plates, short poles, rotating lock shafts, wedge blocks, and bolts. The existing technology suffers from the following drawbacks:

[0003] When the rotary lock shaft adopts the casting process, the casting mold needs to be opened first. The size deviation of the blank after mold opening is large and the surface is rough, which still cannot meet the use requirements. In order to ensure the matching accuracy of the wedge block and the rotary lock shaft, the wedge surface of the rotary lock shaft blank that matches the wedge block needs to be machined, so the casting process takes a long time; in addition, the casting process is prone to internal sand holes, air holes and other defects, which will cause the rotary lock shaft to be damaged due to stress concentration caused by internal defects during use.

[0004] When machining the rotary lock shaft, since the rotary lock shaft is a thick plate, it is necessary to reserve about 8-10mm (millimeter) margin on one side for flame cutting to produce the blank before machining the entire part. It is necessary to replace different machines and clamp multiple times to complete the machining of the rotary lock shaft; the overall machining cost is 1.5 to 2 times that of casting.

[0005] The height of the commonly used detachable short columns is generally 1ft-6ft (300-1200mm). Short columns of different heights use the same rotary lock shaft. In order to meet the stacking capacity and strength requirements of the rotary lock shaft of the 6ft detachable short column, the rotary lock shaft strength is surplus at a height of 1ft. However, due to mold limitations, its structural thickness cannot be adjusted at will, and the processing is time-consuming and material-consuming, which increases economic costs.

[0006] Therefore, it is necessary to provide a detachable short pole assembly and a container having the same to at least partially solve the above problems. Summary of the Invention

[0007] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention of this application 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.

[0008] To at least partially solve the above problems, according to a first aspect of the present application, a detachable short column assembly is provided, the detachable short column assembly being used to be fixed to the top corner fitting of a container, comprising: a fixing part, the fixing part comprising: a short column having a hollow chamber inside the short column; and a stacking plate, the stacking plate being arranged at the bottom end of the short column, the stacking plate having a first through hole; and a locking part, the locking part comprising: a wedge block, the wedge block being arranged in the hollow chamber of the short column; and a rotary lock shaft, the rotary lock shaft comprising a plurality of rotary lock pieces, the rotary lock pieces being stacked and connected as a whole, each of the rotary lock pieces having a wedge-shaped hole, the plurality of wedge-shaped holes together forming a wedge-shaped channel, the wedge channel being adapted to the wedge block, the top end of the rotary lock shaft extending into the hollow chamber of the short column through the first through hole, and the detachable short column assembly being rotated so that the bottom end of the rotary lock shaft is clamped on the inner side wall of the top corner fitting.

[0009] Optionally, the top and bottom ends of the rotary lock piece each have a second through hole, and a plurality of the second through holes are connected to form a second channel;

[0010] The detachable short column assembly further includes a metal welding component adapted to fit in the second through hole.

[0011] Optionally, the outer surface of at least one side of the rotary lock piece has a notch opening toward the hollow chamber of the short column rod, and a plurality of the notches are connected to form a notch channel, which is suitable for accommodating parts to be welded.

[0012] Optionally, each of the plurality of rotating lock pieces includes a top end, a bottom end, and a connecting end connected to the top end and the bottom end;

[0013] The outer surfaces of the connecting ends of the two outermost rotating locking pieces among the plurality of rotating locking pieces are both configured as arc-shaped surfaces.

[0014] Optionally, the interior of the wedge block is sequentially connected to a first threaded hole and a third through hole from the small end to the large end, the inner diameter of the third through hole is larger than the inner diameter of the first threaded hole, and a shoulder is constructed at the connection portion between the third through hole and the first threaded hole;

[0015] The detachable short column assembly further includes a bolt, which passes through the short column and is connected to the first threaded hole.

[0016] Optionally, the detachable short column rod assembly also includes a blocking washer, which is arranged in the third through hole and is suitable for reciprocating motion along the axial direction of the third through hole. The blocking washer is adapted to the tail of the bolt, and the outer diameter of the blocking washer is larger than the inner diameter of the first threaded hole.

[0017] Optionally, the tail portion of the bolt has a second threaded hole extending in the axial direction;

[0018] The detachable short column assembly further includes a fastener adapted to fit in the second threaded hole.

[0019] Optionally, the detachable short column assembly further comprises a slat, which passes through the wedge-shaped channel of the rotary lock shaft, and the slat is tightly arranged between the stacking plate and the wedge-shaped channel.

[0020] Optionally, the stacking plates are detachably connected to the slats.

[0021] Optionally, one side of the short column has an opening, and the opening constitutes an entrance of the wedge-shaped channel for inserting the wedge-shaped block; and

[0022] The detachable short column assembly further includes a side sealing plate, which covers the opening.

[0023] Optionally, the detachable short column assembly further includes an upper end sealing plate, which is arranged at the upper end of the hollow chamber of the short column and is suitable for preventing the rotary lock shaft from moving vertically along the short column.

[0024] According to a second aspect of the present application, a container is further provided, comprising the above-mentioned detachable short column assembly.

[0025] Compared with the prior art, the detachable short column assembly of the present application has the following beneficial effects:

[0026] The present application changes the rotary lock shaft from the integral type in the prior art to a structure composed of multiple rotary lock pieces stacked and connected into one piece, thereby enabling the detachable short column assembly of the present application to appropriately increase or decrease the number of rotary lock pieces according to its own height. The top end of the rotary lock shaft is inserted into the hollow cavity of the short column through the first through hole of the stacking plate, and the wedge block is inserted into the wedge-shaped channel to achieve the adaptation of the wedge block and the wedge-shaped channel. In this way, the rotary lock shaft will not fall downward from the hollow cavity of the short column under the support of the wedge block. To achieve the detachable connection between the detachable short column assembly of the present application and the top corner fitting, the detachable short column assembly of the present application is rotated so that the bottom end of the rotary lock shaft is clamped on the inner side wall of the top corner fitting. In this way, the detachable short column assembly of the present application can be fixed and installed on the top corner fitting of the container. The rotary lock shaft in the detachable short column rod assembly of the present application is composed of multiple rotary lock plates stacked and connected as one. When manufacturing the rotary lock plates, they can be directly stamped into shape. Compared with the casting or machining methods in the prior art, it effectively shortens the processing time, effectively improves the processing efficiency, and greatly saves economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings of the embodiments of the present application are hereby incorporated as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the principles of the present application. In the drawings,

[0028] Figure 1 This is a schematic diagram of the overall structure of a detachable short column assembly in which the top end is connected to a top corner piece according to a preferred embodiment of the present application;

[0029] Figure 2 Schematic diagram of the internal structure of a detachable short column assembly according to a preferred embodiment of the present application;

[0030] Figure 3 Schematic diagram of the split structure of a detachable short column assembly according to a preferred embodiment of the present application;

[0031] Figure 4 for Figure 2 Schematic diagram of the overall structure of the rotary lock shaft;

[0032] Figure 5 for Figure 4 A schematic diagram of the front structure of FIG.

[0033] Figure 6 for Figure 5 Schematic diagram of CC cross-section structure in;

[0034] Figure 7This is a structural schematic diagram of a detachable short column assembly installed on a cargo platform of a desktop container according to a preferred embodiment of the present application;

[0035] Figure 8 This is a structural schematic diagram of a detachable short column assembly installed on a platform box according to a preferred embodiment of the present application.

[0036] Reference numerals:

[0037] 200: Container; 201: Platform container; 202: Rack container; 203: Corner fitting; 100: Removable short column assembly; 101: Fixed portion; 102: Short column; 102a: Hollow chamber; 102b: Opening; 103: Stacking plate; 111: Wedge block; 111a: First threaded hole; 111b: Third through hole; 111c: Shoulder; 112: Twist lock shaft; 112a: Twist lock plate; 112b: Wedge hole; 112c: Wedge channel; 112d: Top end of twist lock shaft 112 ; 112e: the bottom end of the rotary lock shaft 112; 112f: the metal welding part; 113: the second through hole; 114: the second channel; 115: the notch; 116: the notch channel; 117: the top end of the rotary lock plate 112a; 118: the bottom end of the rotary lock plate 112a; 119: the connecting end of the rotary lock plate 112a; 119a: the arcuate surface; 120: the bolt; 120a: the tail of the bolt 120; 120b: the second threaded hole; 120c: the fastener; 121: the blocking washer; 122: the slat; 123: the side sealing plate. DETAILED DESCRIPTION

[0038] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described to avoid confusion with the present application embodiments.

[0039] In order to fully understand the embodiments of the present application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art.

[0040] like Figures 1 to 8 As shown, the present application provides a detachable short column assembly 100, which is installed on a container 200. The container 200 includes a platform container 201 and a platform container 202. The installation of the detachable short column assembly 100 effectively improves the cargo loading rate of the container 200.

[0041] like Figures 1 to 8As shown, the detachable short column assembly 100 according to the present application includes a fixing portion 101 and a locking portion (not shown in the figure).

[0042] The fixed portion 101 includes a short column 102 and a stacking plate 103 . The short column 102 has a hollow chamber 102 a therein.

[0043] The stacking plate 103 is disposed at the bottom end of the short column 102 , and the stacking plate 103 has a first through hole (not shown in the figure).

[0044] The locking portion includes a wedge block 111 and a rotary lock shaft 112 . The wedge block 111 is disposed in the hollow chamber 102 a of the short column 102 .

[0045] The rotary lock shaft 112 includes multiple rotary lock plates 112a, which are stacked and connected as a whole. Each rotary lock plate 112a has a wedge-shaped hole 112b. The multiple wedge-shaped holes 112b together form a wedge-shaped channel 112c. The wedge-shaped channel 112c is adapted to the wedge block 111. The top end 112d of the rotary lock shaft 112 extends into the hollow chamber 102a of the short column rod 102 through the first through hole. The detachable short column rod assembly 100 is rotated so that the bottom end 112e of the rotary lock shaft 112 is clamped on the inner side wall of the top angle piece 203. The present invention changes the lock shaft 112 into a structure composed of multiple lock pieces 112a stacked and connected as one body, thereby making it possible for the detachable short column rod assembly 100 of the present invention to appropriately increase or decrease the number of lock pieces 112a according to its own height. The top end 112d of the lock shaft 112 is inserted into the hollow chamber 102a in the short column rod 102 through the first through hole on the stacking plate 103, and at the same time, the wedge block 111 is inserted into the wedge block 111. The wedge block 111 fits into the wedge channel 112c, so that the rotary lock shaft 112 will not fall downward from the hollow chamber 102a in the short column 102 under the support of the wedge block 111. To achieve the detachable connection between the detachable short column assembly 100 of the present application and the top corner fitting 203, the detachable short column assembly 100 of the present application is rotated so that the bottom end 112e of the rotary lock shaft 112 is clamped on the inner side wall of the top corner fitting 203. In this way, the detachable short column assembly 100 of the present application can be fixed and installed on the top corner fitting 203 of the container 200. The rotary lock shaft 112 in the detachable short column rod assembly 100 of the present application is composed of multiple rotary lock plates 112a stacked and connected as one body. When the rotary lock plates 112a are manufactured, they can be directly stamped and formed. Compared with the casting or machining methods in the prior art, the processing time is effectively shortened, the processing efficiency is effectively improved, and the economic cost is greatly saved.

[0046] like Figures 1 to 6As shown, in some preferred embodiments of the present application, the top end 112d and the bottom end 112e of the rotation lock piece 112a both have a second through hole 113 , and the plurality of second through holes 113 are connected to form a second channel 114 .

[0047] The detachable short column assembly 100 further includes a metal welding component 112f, which is adapted to fit within the second through hole 113. By configuring the second through hole 113 at both the top end 112d and the bottom end 112e of the rotary lock piece 112a, and installing the metal welding component 112f within the second through hole 113, a plurality of rotary lock pieces 112a can be connected into one piece by plug welding, thereby minimizing the amount of welding and ensuring the structural integrity of the rotary lock shaft 112.

[0048] Preferably, the metal welding component 112f can be made of steel or iron.

[0049] like Figures 3 to 5 As shown, in some preferred embodiments of the present application, the outer surface of at least one side of the rotating lock piece 112a has a notch 115 opening toward the hollow chamber 102a of the short column 102, and multiple notches 115 are connected to form a notch channel 116. The notch channel 116 is suitable for accommodating components to be welded (not shown in the figure). In order to further enhance the connection strength between the various rotating lock pieces 112a and ensure the integrity of the connection of the various rotating lock pieces 112a, by having a notch 115 opening toward the hollow chamber 102a of the short column 102 on the outer surface of at least one side of each rotating lock piece 112a, when the multiple rotating lock pieces 112a are stacked and connected as one, the multiple notches 115 will be connected to form a notch channel 116. In this way, by accommodating the components to be welded in the notch channel 116, the components to be welded can be connected to the various rotating lock pieces 112a as one by welding, thereby achieving the purpose of further enhancing the connection strength between the various rotating lock pieces 112a.

[0050] Preferably, the material of the parts to be welded can be steel or iron.

[0051] The rotary lock shaft 112 of the present application is manufactured by stacking and combining multiple single-piece rotary lock pieces 112a. First, a blanking die is used to stamp out a blanked single-piece rotary lock piece 112a. After the blanking is completed, two or more rotary lock pieces 112a are stacked and combined. Afterwards, the wedge-shaped channel 112c that needs to cooperate with the wedge block 111 and the arc surface 119a on the connecting end 119 described below are machined. Finally, the surface of the processed detachable short column rod assembly 100 is spray-painted to prevent the detachable short column rod assembly 100 from rusting. The use of the stacking combination and blanking manufacturing process greatly shortens the manufacturing cycle of the rotary lock shaft 112, thereby reducing the manufacturing cost of the detachable short column rod assembly 100 of the present application, and effectively avoids the internal defects of the detachable short column rod assembly 100 generated during the manufacturing process.

[0052] Optionally, for detachable short column assemblies 100 of different heights, the number of the rotary lock pieces 112 a can be adjusted to produce rotary lock shafts 112 of different thicknesses, thereby meeting different strength requirements.

[0053] It should be noted that the vertical height range of the detachable short column assembly 100 of the present application is greater than or equal to 300 mm and less than or equal to 1200 mm. The present application can set a corresponding number of rotating lock pieces 112a according to the different heights of the detachable short column assembly 100.

[0054] It should also be noted that the higher the height of the detachable short column assembly 100 is, the more rotary lock pieces 112 a are included in the rotary lock shaft 112 .

[0055] like Figure 3 and 5 As shown, in some preferred embodiments of the present application, the plurality of rotating lock pieces 112 a each include a top end 117 , a bottom end 118 , and a connecting end 119 connected to the top end 117 and the bottom end 118 .

[0056] The outer surfaces of the connecting ends 119 of the two outermost rotating lock pieces 112a among the multiple rotating lock pieces 112a are both configured as arcuate surfaces 119a. By configuring the outer surfaces of the connecting ends 119 as arcuate surfaces 119a, the rotating lock shaft 112 can be smoothly rotated when adapted to the top corner piece 203, and the rotating lock shaft 112 can be prevented from getting stuck during rotation.

[0057] like Figure 3As shown, in some preferred embodiments of the present application, the interior of the wedge block 111 is sequentially connected with a first threaded hole 111a and a third through hole 111b from the small end to the large end. The inner diameter of the third through hole 111b is larger than the inner diameter of the first threaded hole 111a, and a shoulder 111c is constructed at the connecting portion between the third through hole 111b and the first threaded hole 111a.

[0058] The detachable short column assembly 100 further includes a bolt 120 that passes through the short column 102 and is connected to the first threaded hole 111 a. After passing through the short column 102, the bolt 120 is connected to the first threaded hole 111 a to achieve a fixed connection between the bolt 120 and the wedge block 111.

[0059] like Figure 3 As shown, to further optimize the technical solutions in the above embodiments, in some preferred embodiments of the present application, the detachable short column assembly 100 further includes a blocking washer 121. The blocking washer 121 is disposed in the third through hole 111b and is adapted to reciprocate along the axial direction of the third through hole 111b. When the blocking washer 121 is adapted to the tail portion 120a of the bolt 120, the outer diameter of the blocking washer 121 is larger than the inner diameter of the first threaded hole 111a. The provision of the blocking washer 121 can prevent the tail portion 120a of the bolt 120 from radially moving within the third through hole 111b and completely escaping from the wedge block 111.

[0060] like Figure 3 As shown, in order to further optimize the technical solution of the above embodiment, in some preferred embodiments of the present application, the tail portion 120a of the bolt 120 has a second threaded hole 120b extending in the axial direction.

[0061] The detachable short column assembly 100 further includes a fastener 120c, which is adapted to fit into the second threaded hole 120b. After the bolt 120 is sequentially inserted into the first threaded hole 111a and the third through hole 111b, a blocking washer 121 is disposed between the fastener 120c and the bolt 120. When the bolt 120 needs to be withdrawn from the wedge block 111, the blocking washer 121 moves axially within the third through hole 111b toward the shoulder 111c. When the blocking washer 121 moves until it engages with the shoulder 111c, the bolt 120 cannot be completely withdrawn from the wedge block 111, and the wedge block 111 and the rotary lock shaft 112 will not fall off the short column 102, thereby preventing the bolt 120, the wedge block 111, and the rotary lock shaft 112 from being lost.

[0062] It should be noted that in order to achieve the effect of preventing loss, there are many other methods that can be implemented, such as adding a nut to the outer end of the tail 120a of the bolt 120, and adding a gasket if necessary; for example, the tail 120a of the bolt 120 is constructed with a through hole perpendicular to the axis, and a pin is passed through the through hole, and a gasket can be added if necessary; for example, a stop block is added to the tail 120a of the bolt 120 by riveting, welding or bonding, etc. The above-mentioned methods are all for the purpose of preventing the bolt 120 from completely withdrawing from the wedge block 111, thereby achieving the effect of preventing loss.

[0063] like Figure 2 and Figure 3 As shown, in some preferred embodiments of the present application, the detachable short column assembly 100 further includes a slat 122, which passes through the wedge-shaped channel 112c of the rotary lock shaft 112. The slat 122 is tightly disposed between the stacking plate 103 and the wedge-shaped channel 112c. The rotary lock shaft 112 is restricted by the slat 122, ensuring that the rotary lock shaft 112 does not fall out of the hollow chamber 102a of the short column 102.

[0064] To further optimize the technical solutions of the above embodiments, in some preferred embodiments of the present application, the stacking plate 103 is detachably connected to the slats 122. Specifically, a first connecting through-hole (not shown in the figure) is constructed on the stacking plate 103, and a second connecting through-hole is correspondingly constructed on the slats 122. When the slats 122 are placed on the top surface of the stacking plate 103, the first connecting through-hole is correspondingly connected to the second connecting through-hole, and bolts or rivets are used to fit the first connecting through-hole and the second connecting through-hole, thereby realizing a detachable connection between the slats 122 and the stacking plate 103.

[0065] like Figure 1 and Figure 3 As shown, in some preferred embodiments of the present application, one side of the short column rod 102 has an opening 102b, and the opening 102b constitutes the entrance of the wedge-shaped channel 112c for the wedge block 111 to be inserted.

[0066] The detachable short column assembly 100 further includes a side sealing plate 123, which covers the opening 102b. The side sealing plate 123 can be clamped to the opening 102b of the short column 102 by a rubber clamping block, thereby forming a blockage for the opening 102b.

[0067] like Figure 7 and Figure 8 As shown, according to the second aspect of the present application, a container 200 is further provided. The container 200 includes the detachable short column assembly 100 described in the above embodiment.

[0068] In summary, the present invention changes the rotary lock shaft 112 from the integral type in the prior art to a structure in which multiple rotary lock pieces 112a are stacked and connected as one body, so that the detachable short column rod assembly 100 of the present invention can appropriately increase or decrease the number of the rotary lock pieces 112a according to its own height, and the top end 112d of the rotary lock shaft 112 is inserted into the hollow chamber 102a in the short column rod 102 through the first through hole on the stacking plate 103, and at the same time, the wedge block 111 is inserted into the short column rod 102. The wedge block 111 fits into the wedge-shaped channel 112c, thereby achieving the adaptation of the wedge block 111 to the wedge-shaped channel 112c. In this way, the rotary lock shaft 112 will not fall downward from the hollow chamber 102a in the short column 102 under the support of the wedge block 111. To achieve the detachable connection between the detachable short column assembly 100 of the present application and the top corner fitting 203, the detachable short column assembly 100 of the present application is rotated so that the bottom end 112e of the rotary lock shaft 112 is clamped on the inner side wall of the top corner fitting 203. In this way, the detachable short column assembly 100 of the present application can be fixed and installed on the top corner fitting 203 of the container 200. The rotary lock shaft 112 in the detachable short column rod assembly 100 of the present application is composed of multiple rotary lock plates 112a stacked and connected as one body. When the rotary lock plates 112a are manufactured, they can be directly stamped and formed. Compared with the casting or machining methods in the prior art, the processing time is effectively shortened, the processing efficiency is effectively improved, and the economic cost is greatly saved.

[0069] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "setting" appearing in this document can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this document in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0070] The present application has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present application to the described embodiments. Those skilled in the art will appreciate that many more variations and modifications may be made based on the teachings of this application, and all of these variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A detachable short column assembly, which is used to be fixed to the top corner piece of a container, characterized in that: include: A fixed part, comprising: a short pole having a hollow chamber therein; and A stacking plate, the stacking plate being arranged at the bottom end of the short column, the stacking plate having a first through hole; and A locking portion, comprising: a wedge-shaped block disposed in the hollow cavity of the short column; and The rotary lock shaft includes a plurality of rotary lock plates, which are stacked and connected as a whole. Each rotary lock plate has a wedge-shaped hole. The plurality of wedge-shaped holes together form a wedge-shaped channel. The wedge-shaped channel is adapted to the wedge block. The top end of the rotary lock shaft extends into the hollow cavity of the short column through the first through hole. The detachable short column assembly is rotated so that the bottom end of the rotary lock shaft is clamped on the inner side wall of the top angle piece.

2. The detachable short column assembly according to claim 1, characterized in that: The top and bottom ends of the rotating lock piece each have a second through hole, and a plurality of the second through holes are connected to form a second channel; The detachable short column assembly further includes a metal welding component adapted to fit in the second through hole.

3. The detachable short column assembly according to claim 1, wherein: The outer surface of at least one side of the rotary lock piece has a notch opening toward the hollow chamber of the short column rod, and a plurality of the notches are connected to form a notch channel, which is suitable for accommodating components to be welded.

4. The detachable short column assembly according to claim 1, wherein: Each of the plurality of rotating lock pieces includes a top end, a bottom end, and a connecting end connected to the top end and the bottom end; The outer surfaces of the connecting ends of the two outermost rotating locking pieces among the plurality of rotating locking pieces are both configured as arc-shaped surfaces.

5. The detachable short column assembly according to claim 1, wherein: The wedge block has a first threaded hole and a third through hole in communication with each other from the small end to the large end. The inner diameter of the third through hole is larger than the inner diameter of the first threaded hole. A shoulder is formed at the connection between the third through hole and the first threaded hole. The detachable short column assembly further includes a bolt, which passes through the short column and is connected to the first threaded hole.

6. The detachable short column assembly according to claim 5, characterized in that: The detachable short column assembly also includes a blocking washer, which is arranged in the third through hole and is suitable for reciprocating motion along the axial direction of the third through hole. The blocking washer is adapted to the tail of the bolt, and the outer diameter of the blocking washer is larger than the inner diameter of the first threaded hole.

7. The detachable short column assembly according to claim 6, wherein: The tail portion of the bolt has a second threaded hole extending in the axial direction; The detachable short column assembly further includes a fastener adapted to fit in the second threaded hole.

8. The detachable short column assembly according to claim 1, wherein: The detachable short column assembly further comprises a slat which passes through the wedge-shaped channel of the rotary lock shaft and is tightly arranged between the stacking plate and the wedge-shaped channel.

9. The detachable short column assembly according to claim 8, wherein: The stacking plates are detachably connected to the slats.

10. The detachable short column assembly according to claim 1, wherein: One side of the short column has an opening, which constitutes the entrance of the wedge-shaped channel for inserting the wedge block; and The detachable short column assembly further includes a side sealing plate, which covers the opening.

11. The detachable short column assembly according to claim 1, wherein: The detachable short column assembly further comprises an upper end sealing plate, which is arranged at the upper end of the hollow chamber of the short column and is suitable for preventing the rotary lock shaft from moving vertically along the short column.

12. A container, characterized in that: Comprising a detachable short column assembly according to any one of claims 1 to 11.

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