Splicing type independent supporting column

Abstract

The spliced independent supporting column comprises a lower stand column, a middle stand column and an upper stand column, a bottom supporting plate is arranged at the lower end of the lower stand column, and a top supporting plate is arranged at the upper end of the upper stand column; a lifting connecting column is further included and comprises a sleeve and a lifting pipe slidably connected with the sleeve, a plurality of limiting sliding grooves are inwards formed in one end of the sleeve, and a plurality of driving strips slidably connected with the limiting sliding grooves in a one-to-one correspondence mode are arranged on the outer wall of the lifting pipe. The end, close to the lifting pipe, of the sleeve is rotationally connected with a lifting driving threaded sleeve in threaded connection with the driving strip, and the free end of the sleeve and the free end of the lifting pipe are both in threaded connection with second clamping threaded sleeves used for clamping the stand column. The device further comprises a connecting section, and the two ends of the connecting section are in threaded connection with second clamping threaded sleeves used for clamping the stand columns. The splicing type design is adopted, multiple times of turnover use can be achieved, the installation procedure is simplified, the construction time is shortened, the height can be flexibly adjusted according to the specific situation of a construction site, and the diversified requirements are met.

Description

Technical Field

[0001] The invention belongs to the technical field of supporting columns and relates to a spliced ​​independent supporting column. Background Art

[0002] In the field of construction engineering, the reliability of the support system directly affects the quality and safety of the entire construction project. Especially in the construction process of high-rise buildings and large-span structures, independent support columns play an irreplaceable role as an important part of temporary structures. Traditionally, a type of support column widely used in the construction industry is made by filling polyvinyl chloride (PVC) pipes with concrete. The design concept of this support column cleverly combines the lightness of PVC pipes and the high strength of concrete, making it an option to provide effective support during construction. This type of support column generally includes three major parts: bottom support, column and top support, and each part works closely together to ensure the stability and bearing capacity of the overall structure.

[0003] Despite this, the existing support column solution based on PVC pipes filled with concrete still has some significant shortcomings. First, most of these support columns are designed to be disposable products, that is, after completing their supporting tasks, they must be disassembled from the construction site and discarded. This practice not only leads to a large amount of material waste, but also increases project costs and has adverse effects on the environment, which runs counter to the green and sustainable development concept advocated by the current construction industry. Secondly, since concrete pouring needs to be carried out on site, this process is relatively time-consuming, which prolongs the construction period and is not conducive to the fast-paced rapid construction needs of modern building construction.

[0004] In addition, existing support columns are also relatively rigid in terms of height adjustment. Since the length of the column is fixed, it cannot be flexibly adjusted according to the actual building height, which limits their application scope to a certain extent. In actual operation, if there is a need to fine-tune the height, it is often necessary to replace support columns of different sizes or add additional accessories to achieve the purpose, which undoubtedly increases the complexity and cost of the construction process, and also increases the safety risks during the construction process. Summary of the invention

[0005] The purpose of the present invention is to provide a spliced ​​independent support column, which adopts a spliced ​​design, can be used multiple times, simplifies the installation procedure, shortens the construction time, and can flexibly adjust the height according to the specific conditions of the construction site to meet diverse needs.

[0006] In order to solve the above technical problems, the present invention provides a spliced ​​independent support column, comprising a lower column, a middle column and an upper column, wherein a bottom support plate is arranged at the lower end of the lower column, and a top support plate is arranged at the upper end of the upper column;

[0007] It also includes a lifting connection column, which includes a sleeve, 、 A lifting tube slidably connected to the inner wall of the sleeve, one end of the sleeve is provided with a plurality of limiting sliding grooves arranged inwardly along its length direction, and the outer wall of the lifting tube is provided with a plurality of driving strips slidably connected to the limiting sliding grooves one by one along its length direction, and the end of the sleeve close to the lifting tube is rotatably connected to a lifting driving threaded sleeve with an internal thread, and the outer side of each driving strip is provided with an external thread threadedly connected to the lifting driving threaded sleeve, and the free ends of the sleeve and the lifting tube are both provided with a first clamping sleeve with an external thread outwardly, and the lower column, 、 The outer diameters of the middle column and the upper column are matched with the inner diameter of the first clamping sleeve, each first clamping sleeve is cut inward from the free end to form a multi-petal first elastic clip, each first clamping sleeve is threadedly connected with a first clamping thread sleeve, the outer edge of the free end of each first elastic clip is cut to form a first inner extrusion platform, and the free edge of each first clamping thread sleeve is provided with a first outer extrusion platform matched with the first inner extrusion platform, and the first outer extrusion platform gradually contacts with the first inner extrusion platform to extrude the first elastic clip inward;

[0008] It also includes a connecting section, both ends of which are provided with a second clamping sleeve with external threads. 、 The outer diameters of the middle column and the upper column are matched with the inner diameter of the second clamping sleeve, each second clamping sleeve is cut inward from the free end to form a multi-petal second elastic clip, each second clamping sleeve is threadedly connected with a second clamping threaded sleeve, the outer edge of the free end of each second elastic clip is cut to form a second inner extrusion platform, and the free edge of each second clamping threaded sleeve is provided with a second outer extrusion platform matched with the second inner extrusion platform, and the second outer extrusion platform gradually contacts with the second inner extrusion platform to extrude the second elastic clip inward.

[0009] By adopting the above technical scheme, when it is necessary to carry out building support, the lower column, the middle column and the upper column are spliced ​​in sequence, the lower column and the middle column are connected by the lifting connecting column, and the upper end of the lower column and the lower end of the middle column are respectively inserted into the corresponding first clamping sleeve, and then the first clamping threaded sleeve is rotated to make the first outer extrusion platform move and extrude the first inner extrusion platform, drive the first elastic clip to extrude the column inward, so that the lower column and the middle column are firmly connected with the lifting connecting column; then the upper column is connected with the middle column through the connecting section, and the upper end of the middle column and the lower end of the upper column are respectively inserted into the corresponding second clamping sleeve, and then the second clamping threaded sleeve is rotated to make the second outer extrusion platform move and extrude the second inner extrusion platform, drive the second elastic clip to extrude the column inward, so that the upper column and the middle column are firmly connected with the connecting section; finally, according to the height situation, the lifting drive threaded sleeve is rotated, and the lifting pipe is driven up and down through the threaded connection with the driving bar, so that the top supporting plate can stably support the lower end of the building;

[0010] When the building is completed and needs to be disassembled for turnover, first rotate the lifting drive threaded sleeve to lower the overall height, remove the U-shaped support pipe, and then rotate the first clamping threaded sleeve and the second clamping threaded sleeve in reverse order, gradually loosening the connection with the lower column, middle column and upper column, so that it can be disassembled into multiple sections for turnover.

[0011] The invention further comprises that the two opposite sides of the top support plate are hinged with limit strips through hinges, and the upper part of the upper column is slidably connected with a sliding adjustment sleeve, and the sliding adjustment sleeve and each limit strip are rotatably connected with a push-pull strip. The two opposite sides of the sliding adjustment sleeve are provided with an adjusting slot, and one end of each adjusting slot is provided with a through hole that passes through the sliding adjustment sleeve. Two clamping holes distributed along its length direction and corresponding to the position of the through holes are provided on both sides of the upper part of the upper column. Each adjusting slot is rotatably connected with a rotation limit plate that rotates along its length direction, and a limit clamping shaft matching the corresponding through hole is provided on the inner side of one end of each rotation limit plate, and a supporting spring is provided between one end of each rotation limit plate away from its limit clamping shaft and the corresponding adjusting slot. When the limit clamping shaft is clamped in the clamping hole of the upper part, the limit bar rotates upward to be perpendicular to the top support plate, and when the limit clamping shaft is clamped in the clamping hole of the lower part, the limit bar rotates to be parallel to the top support plate.

[0012] By adopting the above technical solution, when there is no need to expand the supporting area, the two limit bars are rotated to be parallel to the top support plate to directly support the lower end of the building. If it is necessary to increase the supporting area, first press and rotate the limit plate to make the limit clamping shaft disengage from the lower clamping hole, and push the sliding adjustment sleeve upward until the limit clamping shaft moves to the position of the upper clamping hole and is clamped into the upper clamping hole under the action of the support spring, so that the two limit bars are rotated upward to the vertical top support plate at this time, and the steel bars or steel pipes can be placed into the upper ends of two or more top support plates. The limit bars are used to prevent the U-shaped support pipe from slipping from the side.

[0013] The present invention is further configured to include a U-shaped support tube that cooperates with the top supporting plate and the limiting strip.

[0014] The present invention is further configured such that the middle portion of the U-shaped support tube is a section where the U-shaped cross beam passes through.

[0015] The present invention is further configured such that the inner diameters of the through hole and the clamping hole are both larger than the outer diameter of the limit clamping shaft.

[0016] The present invention is further configured such that an annular limiting rotation groove is provided on the inner side of the lifting drive threaded sleeve, and the outer wall of one end of the sleeve passed through by the limiting sliding groove is provided with a plurality of arc-shaped limiting strips slidably connected to the annular limiting rotation groove.

[0017] The present invention is further configured such that the outer sides of each lifting drive threaded sleeve, each first clamping threaded sleeve and each second clamping threaded sleeve are provided with a plurality of strip-shaped slots arranged along the length direction thereof.

[0018] The present invention is further configured such that one end of the sleeve connected to the corresponding first clamping sleeve and one end of the lifting tube connected to the corresponding first clamping sleeve are both sealed.

[0019] The present invention is further configured such that both ends of the connecting section are sealed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] First, the present invention designs the support column into a multi-section combination form. The spliced ​​independent support column allows each component (such as a column, a lifting connection column, etc.) to be quickly connected and disassembled through a clamping device. After the construction is completed, the connection with the column can be loosened by reversely rotating the clamping threaded sleeve, thereby disassembling the support column into multiple components for recycling and reuse, effectively reducing material waste, reducing the generation of construction waste, and meeting the development requirements of green buildings.

[0022] Secondly, the support column of the present invention is provided with a sliding adjustment sleeve and a limit bar, and the position of the limit bar can be adjusted by a push-pull bar to keep it in a horizontal or vertical state, so as to increase the support area according to actual usage; at the same time, the design of the drive bar and the threaded sleeve of the lifting connecting column allows flexible adjustment of the height. The user can adjust the position of the lifting tube by rotating the lifting drive threaded sleeve according to actual needs, thereby changing the height of the entire support column, so that the same support column can adapt to a variety of working scenes at different heights, increasing its application range and practicality.

[0023] Third, the design of the clamping sleeve and the clamping threaded sleeve of the present invention makes the connection and disassembly between the various components simple and quick. When installing or disassembling, it is only necessary to use a special tool to insert the bar-shaped slot and rotate the threaded sleeve to easily fix or separate the components, which greatly shortens the construction preparation time and subsequent cleaning time, and improves the efficiency of the entire construction process.

[0024] Fourthly, the design of the limit strip and the U-shaped support tube of the present invention enables the support column to provide a larger support area on a plane or a beam. By adjusting the position of the limit strip, it is possible to choose whether to use the U-shaped support tube to increase the support area, or to use the U-shaped support tube with a U-shaped beam passing section on the beam. The larger support area and more stable connection method improve the overall stability of the support structure and reduce the construction safety risk.

[0025] Fifth, the support column of the present invention is designed to be segmented, and each segment is connected by a clamping device. After the construction is completed, the support column can be disassembled into multiple small parts through simple steps, which is convenient for transportation and storage. The segmented design makes it easier for the support column to be used between different construction sites, reduces the difficulty of transportation and storage space requirements, and improves the utilization rate of the equipment.

[0026] Sixth, through adjustable height and segmented design, one support column can adapt to various height requirements. The height of the support column can be adjusted according to the actual height requirements. There is no need to replace columns of different lengths, which reduces the need to frequently replace support columns due to height changes, reduces material costs and new purchase costs, and has higher economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 Used to show the connection between the lower column, middle column and upper column;

[0029] Figure 3 It is an exploded view of the lifting connection column;

[0030] Figure 4It is an exploded view for showing the connection between the connecting section and the second clamping threaded sleeve;

[0031] Figure 5 It is an exploded view used to show the connection between the rotation limit plate and the upper column;

[0032] Figure 6 It is a schematic diagram of the overall structure of a U-shaped support tube with a U-shaped crossbeam passing section.

[0033] Among them, 1. lower column; 2. middle column; 3. upper column; 4. bottom support plate; 5. top support plate; 6. limit strip; 7. sliding adjustment sleeve; 8. push-pull strip; 9. adjustment slot; 10. perforation; 11. clamping hole; 12. rotation limit plate; 13. limit clamping shaft; 14. support spring; 15. U-shaped support pipe; 16. U-shaped beam passing section; 17. sleeve; 18. lifting pipe; 19. limit slide groove; 20. ,, driving strip; 21,, lifting driving threaded sleeve; 22,, annular limiting rotation groove; 23,, arc-shaped limiting strip; 24,, first elastic clip; 25,, first clamping threaded sleeve; 26,, first inner extrusion platform; 27, first outer extrusion platform; 28, connecting section; 29, second elastic clip; 30,, second clamping threaded sleeve; 31,, second inner extrusion platform; 32,, second outer extrusion platform; 33, strip-shaped slot. DETAILED DESCRIPTION

[0034] The following is a further detailed description of a spliced ​​independent support column proposed by the present invention in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0035] Example, see Figure 1-6 A spliced ​​independent support column comprises a lower column 1, a middle column 2 and an upper column 3. A bottom supporting plate 4 is arranged at the lower end of the lower column 1, and a top supporting plate 5 is arranged at the upper end of the upper column 3.

[0036] The top support plate 5 has a limit strip 6 hinged on both sides thereof, a sliding adjustment sleeve 7 is slidably connected to the upper part of the upper column 3, a push-pull strip 8 is rotatably connected between the sliding adjustment sleeve 7 and each limit strip 6, and the limit strip 6 is adjusted to rotate to the horizontal or vertical position by moving the position of the push-pull strip 8, and a vertical adjustment slot 9 is provided on both sides thereof, and a through hole 10 penetrating the sliding adjustment sleeve 7 is provided on the upper end of each adjustment slot 9, and two card holes 11 distributed along the length direction thereof and corresponding to the position of the through hole 10 are provided on both sides of the upper part of the upper column 3, and a card hole 11 is rotatably connected in each adjustment slot 9 to rotate along the length direction thereof A rotation limit piece 12 is provided, and a limit clamping shaft 13 matching the corresponding through hole 10 is arranged on the inner side of one end of each rotation limit piece 12. The inner diameters of the through hole 10 and the clamping hole 11 are larger than the outer diameter of the limit clamping shaft 13. A support spring 14 is arranged between the end of each rotation limit piece 12 away from its limit clamping shaft 13 and the corresponding adjustment groove 9. The elastic force of the support spring 14 drives the limit clamping shaft 13 to rotate toward the corresponding through hole 10. When the limit clamping shaft 13 is inserted into the upper clamping hole 11, the two limit strips 6 rotate upward to the vertical top support plate 5. When the limit clamping shaft 13 is inserted into the lower clamping hole 11, the two limit strips 6 rotate to be parallel to the top support plate 5.

[0037] It also includes a U-shaped support tube 15 that cooperates with the top support plate 5 and the limit strip 6. When the support surface is a plane, the U-shaped support tube 15 can be used to increase the support area. When there is a cross beam on the support surface, the middle part of the U-shaped support tube 15 needs to have a U-shaped cross beam passing section 16 so as to bypass the cross beam for support.

[0038] It also includes a lifting connection column, which includes a sleeve 17 and a lifting tube 18 slidably connected to the inner wall of the sleeve 17. One end of the sleeve 17 is provided with four limiting slide grooves 19 arranged inwardly along its length direction. The outer wall of the lifting tube 18 is provided with four driving strips 20 slidably connected to the limiting slide grooves 19 one by one along its length direction. The end of the sleeve 17 close to the lifting tube 18 is rotatably connected with a lifting drive threaded sleeve 21 with an internal thread. The inner side of the lifting drive threaded sleeve 21 is provided with a circle of annular limiting rotation grooves 22. The outer wall of the sleeve 17 at one end passed by the limiting slide groove 19 is provided with a plurality of arc-shaped limiting strips 236 slidably connected to the annular limiting rotation grooves 22, which are used to limit the position of the lifting drive threaded sleeve 21. The outer side of each driving strip 20 is provided with an external thread threadedly connected to the lifting drive threaded sleeve 21. When the lifting drive threaded sleeve 21 is rotated, the lifting tube 18 is driven up and down through the threaded connection with the driving strip 20.

[0039] The free end of the sleeve 17 and the free end of the lifting tube 18 are both provided with a first clamping sleeve 17 with an external thread outwardly, and the end of the sleeve 17 connected to the corresponding first clamping sleeve 17 and the end of the lifting tube 18 connected to the corresponding first clamping sleeve 17 are both sealed. The outer diameters of the lower column 1, the middle column 2 and the upper column 3 are matched with the inner diameter of the first clamping sleeve 17. Each first clamping sleeve 17 is cut inward from the free end to form a four-petal first elastic clip 24. Each first clamping sleeve 17 is threadedly connected with a first clamping thread sleeve 25. The outer edge of the free end of each first elastic clip 24 is cut to form a first inner extrusion platform 26. The free edge of each first clamping thread sleeve 25 is provided with a circle of first outer extrusion platform 27 matched with the first inner extrusion platform 26. The first outer extrusion platform 27 gradually contacts with the first inner extrusion platform 26 to extrude the first elastic clip 24 inwardly for clamping the column.

[0040] It also includes a connecting section 28 with sealed ends, and both ends of the connecting section 28 are provided with a second clamping sleeve 17 with external threads outwardly, the outer diameters of the lower column 1, the middle column 2 and the upper column 3 are matched with the inner diameter of the second clamping sleeve 17, and each second clamping sleeve 17 is cut inward from the free end to form a four-petal second elastic clip 29, and each second clamping sleeve 17 is threadedly connected with a second clamping thread sleeve 30, and the outer edge of the free end of each second elastic clip 29 is cut to form a second inner extrusion platform 31, and the free edge of each second clamping thread sleeve 30 is provided with a circle of second outer extrusion platform 32 matched with the second inner extrusion platform 31, and the second outer extrusion platform 32 gradually contacts with the second inner extrusion platform 31 to extrude the second elastic clip 29 inward for clamping the column.

[0041] Each lifting drive threaded sleeve 21, each first clamping threaded sleeve 25 and each second clamping threaded sleeve 30 has a plurality of strip-shaped slots 33 arranged along its length direction on its outer side. When rotating the threaded sleeve, a special tool can be inserted downward into the strip-shaped slots 33 to easily rotate the threaded sleeve.

[0042] Method of use: When building support is required, the lower column 1, the middle column 2 and the upper column 3 are spliced ​​in sequence, the lower column 1 is connected with the middle column 2 through the lifting connection column, the upper end of the lower column 1 and the lower end of the middle column 2 are respectively inserted into the corresponding first clamping sleeve 17, then the first clamping threaded sleeve 25 is rotated, the first outer extrusion platform 27 moves to extrude the first inner extrusion platform 26, and the first elastic clip 24 is driven to extrude the column inwardly, so that the lower column 1 and the middle column 2 are firmly connected to the lifting connection column; then the upper column 3 is connected with the middle column 2 through the connecting section 28, the upper end of the middle column 2 and the lower end of the upper column 3 are respectively inserted into the corresponding second clamping sleeve 17, then the second clamping threaded sleeve 30 is rotated, the second outer extrusion platform 32 moves to extrude the second inner extrusion platform 31, and the second elastic clip 29 is driven to extrude the column inwardly, so that the upper column 3 and the middle column 2 are firmly connected to the connecting section 28;

[0043] When it is not necessary to expand the supporting area, the two limiting strips 6 are rotated to be parallel to the top supporting plate 5 to directly support the lower end of the building. If it is necessary to increase the supporting area, first press and rotate the limiting plate 12 to make the limiting clamping shaft 13 disengage from the lower clamping hole 11, and push the sliding adjustment sleeve 7 upward until the limiting clamping shaft 13 moves to the position of the upper clamping hole 11 and is clamped into the upper clamping hole 11 under the action of the supporting spring 14, so that the two limiting strips 6 are rotated upward to the vertical top supporting plate 5 at this time, and the U-shaped supporting tube 15 can be placed into the upper end of two or more top supporting plates 5. The limiting strip 6 is used to prevent the U-shaped supporting tube 15 from slipping off from the side. If there is a crossbeam, the U-shaped supporting tube 15 with a U-shaped crossbeam passing section 16 is replaced; finally, according to the height situation, the lifting drive threaded sleeve 21 is rotated, and the lifting tube 18 is driven up and down through the threaded connection with the driving strip 20, so that the top supporting plate 5 or the U-shaped supporting tube 15 can be firmly supported on the lower end of the building;

[0044] When the building is completed and needs to be disassembled, first rotate the lifting drive threaded sleeve 21 to lower the overall height, remove the U-shaped support pipe 15, and then reversely rotate the first clamping threaded sleeve 25 and the second clamping threaded sleeve 30 in sequence to gradually loosen the lower column 1, 、 The connection between the middle column 2 and the upper column 3 allows it to be disassembled into multiple sections for circulation.

[0045] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A spliced ​​independent support column, comprising a lower column (1), a middle column (2) and an upper column (3), wherein a bottom support plate (4) is arranged at the lower end of the lower column (1), and a top support plate (5) is arranged at the upper end of the upper column (3), characterized in that: The lifting and lowering device also comprises a lifting and lowering connection column, wherein the lifting and lowering connection column comprises a sleeve (17) and a lifting tube (18) slidably connected to the inner wall of the sleeve (17); a plurality of limiting sliding grooves (19) are provided inwardly at one end of the sleeve (17) along its length direction; a plurality of driving strips (20) are provided along its length direction and are slidably connected to the limiting sliding grooves (19) in a one-to-one correspondence; a lifting and lowering driving threaded sleeve (21) with an internal thread is rotatably connected to one end of the sleeve (17) close to the lifting tube (18); an external thread is provided on the outer side of each driving strip (20) and is threadedly connected to the lifting and lowering driving threaded sleeve (21); and a first external thread is provided outwardly at the free end of the sleeve (17) and the free end of the lifting tube (18). A clamping sleeve (17), wherein the outer diameters of the lower column (1), the middle column (2) and the upper column (3) are matched with the inner diameter of the first clamping sleeve (17), each first clamping sleeve (17) is cut inward from the free end to form a multi-petal first elastic clip (24), each first clamping sleeve (17) is threadedly connected with a first clamping thread sleeve (25), the outer edge of the free end of each first elastic clip (24) is cut to form a first inner extrusion platform (26), and the free edge of each first clamping thread sleeve (25) is provided with a first outer extrusion platform (27) matched with the first inner extrusion platform (26), and the first outer extrusion platform (27) gradually contacts with the first inner extrusion platform (26) to extrude the first elastic clip (24) inward; The invention also comprises a connecting section (28), both ends of which are provided with a second clamping sleeve (17) with an external thread outwardly, the outer diameters of the lower column (1), the middle column (2) and the upper column (3) are matched with the inner diameter of the second clamping sleeve (17), each second clamping sleeve (17) is cut inwardly from the free end to form a multi-petal second elastic clip (29), each second clamping sleeve (17) is threadedly connected with a second clamping thread sleeve (30), the outer edge of the free end of each second elastic clip (29) is cut to form a second inner extrusion platform (31), and the free edge of each second clamping thread sleeve (30) is provided with a second outer extrusion platform (32) matched with the second inner extrusion platform (31), and the second outer extrusion platform (32) gradually contacts with the second inner extrusion platform (31) to extrude the second elastic clip (29) inward.

2. A spliced ​​independent support column according to claim 1, characterized in that: The two opposite sides of the top support plate (5) are hingedly connected to the limit strips (6); the upper part of the upper column (3) is slidably connected to a sliding adjustment sleeve (7); a push-pull strip (8) is rotatably connected between the sliding adjustment sleeve (7) and each limit strip (6); the two opposite sides of the sliding adjustment sleeve (7) are provided with adjustment grooves (9); one end of each adjustment groove (9) is provided with a through hole (10) penetrating the sliding adjustment sleeve (7); two card holes (11) distributed along the length direction thereof and corresponding to the position of the through hole (10) are provided on both sides of the upper part of the upper column (3); each adjustment groove (9) is rotatably connected to the sliding adjustment sleeve (7); A rotation limit plate (12) is connected to the upper retaining plate (11) and is rotated along its length direction. A limit clamping shaft (13) matching with the corresponding through hole (10) is arranged on the inner side of one end of each rotation limit plate (12). A support spring (14) is arranged between the end of each rotation limit plate (12) away from its limit clamping shaft (13) and the corresponding adjustment groove (9). When the limit clamping shaft (13) is inserted into the upper clamping hole (11), the limit bar (6) rotates upward to be perpendicular to the top support plate (5). When the limit clamping shaft (13) is inserted into the lower clamping hole (11), the limit bar (6) rotates to be parallel to the top support plate (5).

3. A spliced ​​independent support column according to claim 2, characterized in that: It also includes a U-shaped support tube (15) that matches the top supporting plate (5) and the limiting strip (6).

4. The spliced ​​independent support column according to claim 3, characterized in that: The middle part of the U-shaped support tube (15) is a U-shaped crossbeam passing section (16).

5. The spliced ​​independent support column according to claim 2, characterized in that: The inner diameters of the through hole (10) and the clamping hole (11) are both larger than the outer diameter of the limit clamping shaft (13).

6. The spliced ​​independent support column according to claim 1, characterized in that: An annular limit rotation groove (22) is provided on the inner side of the lifting drive threaded sleeve (21), and a plurality of arc-shaped limit strips (23) (6) slidably connected to the annular limit rotation groove (22) are provided on the outer wall of one end of the sleeve (17) through which the limit slide groove (19) passes.

7. The spliced ​​independent support column according to claim 1, characterized in that: The outer sides of each lifting drive threaded sleeve (21), each first clamping threaded sleeve (25) and each second clamping threaded sleeve (30) are provided with a plurality of strip-shaped clamping grooves (33) arranged along the length direction thereof.

8. The spliced ​​independent support column according to claim 1, characterized in that: One end of the sleeve (17) connected to the corresponding first clamping sleeve (17) and one end of the lifting tube (18) connected to the corresponding first clamping sleeve (17) are both sealed.

9. The spliced ​​independent support column according to claim 1, characterized in that: Both ends of the connecting section (28) are sealed.

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