Adjustable independent column steel formwork

Abstract

The utility model relates to the technical field of building steel formwork construction, in particular to an adjustable independent column steel formwork which comprises two L-shaped right-angle plates, two L-shaped splice plates and a plurality of straight splice plates. The L-shaped right-angle plates, the L-shaped splicing plates and the linear splicing plates are connected in one of the following connection modes: the two L-shaped right-angle plates are detachably connected; or, the adjacent L-shaped right-angle plate and L-shaped splicing plate are detachably connected; or the linear splicing plate is arranged between the L-shaped right-angle plate and the L-shaped splicing plate, and the two ends of the linear splicing plate are detachably connected with the L-shaped right-angle plate and the L-shaped splicing plate respectively. According to the adjustable independent column steel formwork, the L-shaped right-angle plate, the L-shaped splicing plate and the linear splicing plate are assembled in different modes, independent column steel formworks of different sizes can be formed so as to meet different construction requirements, and material waste caused by secondary machining of the formwork is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building steel formwork construction, more specifically, relates to an adjustable independent column steel formwork. BACKGROUND

[0002] The conventional independent column formwork has wood formwork and steel formwork, wherein the wood formwork has low assembly and disassembly efficiency, high labor intensity of workers, high labor cost, and low durability of the wood formwork, and the wood formwork has a small number of turnover times; the steel formwork has high overall rigidity, good column forming effect, and can be used for multiple times of turnover, but one size of the steel formwork corresponds to one size of the column section, and when the column section changes, the size of the formwork needs to be reprocessed, which affects the construction efficiency on site and also easily causes waste of the steel formwork.

[0003] The patent with the publication number CN208473295U discloses a steel formwork structure of an independent column, which is composed of four formwork panels connected at the head and tail, the adjacent formwork panels are connected through adjustable draw bolts, one end of the adjustable draw bolt is connected with the flange of one formwork panel through the flange, and the other end of the adjustable draw bolt is connected with the horizontal back rib through the panel surface and the horizontal back rib of another formwork panel; the adjacent formwork panels are connected through the adjustable draw bolts, and the connection between the formwork panels is adjusted by adjusting the position of the connecting rod in the long hole. The outer side of the assembled steel formwork structure of the independent column has part of the end of the formwork panel extending out, which is not beautiful and the extending part may block the view or operation during the construction process; in addition, since the width of each formwork structure is fixed, although the steel formwork structure with adjustable size to a certain extent can be assembled within the width range, the width value of the assembled steel formwork structure has an upper limit, that is, the steel formwork structure cannot be applied to the independent column with a size greater than the width of the formwork; at the same time, the holes arranged at the edge of the formwork panel for adjusting the size of the steel formwork are effective, the adjustable range of the assembled steel formwork structure is limited, and the application has limitations. SUMMARY

[0004] The utility model discloses to overcome above-mentioned situation's insufficient, aims at providing a kind of adjustable independent column steel formwork.

[0005] A kind of adjustable independent column steel formwork, including two L-shaped right angle plates, two L-shaped splicing plates and several one-word splicing plates;The L-shaped right angle plate, L-shaped splicing plate and one-word splicing plate are connected using the following one of connection mode:

[0006] Two the L-shaped right angle plate forms detachable connection;

[0007] Or, adjacent the L-shaped right angle plate and L-shaped splicing plate are detachably connected;

[0008] Or, the one-word splicing plate is arranged between the L-shaped right-angle plate and the L-shaped splicing plate, and two ends of the one-word splicing plate are respectively and detachably connected with the L-shaped right-angle plate and the L-shaped splicing plate.

[0009] Further, two ends of the L-shaped right-angle plate are respectively provided with first connecting plates; two ends of the L-shaped splicing plate are respectively provided with second connecting plates; and two ends of the one-word splicing plate are respectively provided with third connecting plates.

[0010] Further, when the two L-shaped right-angle plates are detachably connected, an L-shaped connecting plate is further included; and the L-shaped connecting plate is detachably connected with the two first connecting plates.

[0011] Further, the L-shaped connecting plate and the first connecting plate of the L-shaped right-angle plate are detachably connected through a positioning pin.

[0012] Further, the first connecting plate of the L-shaped right-angle plate and the second connecting plate of the L-shaped splicing plate of adjacent L-shaped right-angle plates are detachably connected through a positioning pin.

[0013] Further, the third connecting plates of two ends of the one-word splicing plate are respectively detachably connected with the first connecting plate of the L-shaped right-angle plate and the second connecting plate of the L-shaped splicing plate through a positioning pin.

[0014] Further, after a plurality of the one-word splicing plates are sequentially connected to form an extension plate whole, two ends of the extension plate whole are detachably connected with the L-shaped right-angle plate and the L-shaped splicing plate through a positioning pin.

[0015] The two third connecting plates abutting against each other are detachably connected through a positioning pin.

[0016] Further, the first connecting plate is provided with a plurality of first pin key holes, the second connecting plate is provided with a plurality of second pin key holes, and the two side surfaces of the third connecting plate are respectively provided with third pin key holes; and each of the first pin key hole, the second pin key hole and the third pin key hole is adapted to each other.

[0017] The two side surfaces of the L-shaped connecting plate are respectively provided with a plurality of fourth pin key holes, and each of the fourth pin key holes is adapted to the first pin key hole.

[0018] Further, the positioning pin penetrates the abutting first pin key hole and the fourth pin key hole, the abutting first pin key hole and the second pin key hole, the abutting first pin key hole and the third pin key hole, the abutting second pin key hole and the third pin key hole, and the two abutting third pin key holes.

[0019] Further, the positioning pin includes a pin and a pin sheet which are adapted to each other.

[0020] Further, the pin is provided with a perforation for inserting the pin sheet.

[0021] Further, the L-shaped right-angle plate and the L-shaped splicing plate are connected by means of a tongue-and-groove connection.

[0022] The L-shaped right-angle plate and the linear splicing plate are connected by means of a tongue-and-groove connection.

[0023] The L-shaped splicing plate and the linear splicing plate are connected by means of a tongue-and-groove connection.

[0024] The two adjacent linear splicing plates are connected by means of a tongue-and-groove connection.

[0025] Compared with the prior art, the utility model has the beneficial effects that:

[0026] The L-shaped right-angle plate, the L-shaped splicing plate and the linear splicing plate of the adjustable independent column steel formwork adopt different assembly modes, can form independent column steel formworks of different sizes, adapt to different construction requirements, and avoid material waste caused by secondary processing of the formwork.

[0027] Two L-shaped right-angle plates can be used for formwork of the smallest size independent column in a project; two L-shaped right-angle plates and two L-shaped splicing plates can be used for formwork of a slightly larger size independent column in construction; a linear splicing plate is arranged between the two L-shaped right-angle plates and the L-shaped splicing plate two, the size of the assembled independent column steel formwork is increased, thereby being capable of being used for formwork of a larger size independent column in construction; a plurality of linear splicing plates are arranged between the two L-shaped right-angle plates and the L-shaped splicing plate two, the size of the assembled independent column steel formwork is further increased, thereby being capable of being used for formwork of more independent columns of different sizes in construction.

[0028] By changing the number of linear splicing plates arranged between the L-shaped right-angle plate and the L-shaped splicing plate, the formwork can be applied to formwork of independent columns of multiple different sizes, and material waste caused by secondary processing of the formwork is avoided.

[0029] Further, the L-shaped right-angle plate, the L-shaped splicing plate and the linear splicing plate are each provided with a tongue-and-groove at the end portion, the plates are connected by means of the tongue-and-groove, the compactness of the formwork splicing is ensured, and the risk of slurry leakage at the splicing position is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the utility model and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0031] Figure 1 It is the overall structure schematic view of the adjustable independent column steel formwork in the embodiment.

[0032] Figure 2 It is the overall structure schematic view of the adjustable independent column steel formwork in the first embodiment.

[0033] Figure 3 is the schematic diagram of the L-shaped right-angle plate in embodiment one.

[0034] Figure 4 is the schematic diagram of the L-shaped connecting plate in embodiment one.

[0035] Figure 5 is the perspective view of the L-shaped connecting plate in embodiment one.

[0036] Figure 6 is the pin diagram of the positioning pin in embodiment one.

[0037] Figure 7 is the pin diagram of the positioning pin in embodiment one.

[0038] Figure 8 is the schematic diagram of the overall structure of the adjustable independent column steel formwork in embodiment two.

[0039] Figure 9 is the schematic diagram of the overall structure of the adjustable independent column steel formwork in embodiment three.

[0040] In the figure: 1, L-shaped right-angle plate; 11, first connecting plate; 111, first pin key hole; 12, tongue convex part; 13, tongue concave part; 14, first keel;

[0041] 2, L-shaped splicing plate; 21, second connecting plate; 211, second pin key hole; 22, second keel;

[0042] 3, one-word splicing plate; 31, third connecting plate; 311, third pin key hole;

[0043] 4, L-shaped connecting plate; 41, fourth pin key hole;

[0044] 5, positioning pin; 51, pin; 511, through hole; 52, pin piece;

[0045] 6, tongue. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0047] An adjustable independent column steel formwork comprises two L-shaped right-angle plates 1, two L-shaped splicing plates 2 and a plurality of one-word splicing plates 3, as shown in Figure 1As shown, the L-shaped right-angle plates 1, L-shaped splicing plates 2, and straight splicing plates 3 are assembled in different ways to form independent column steel formwork of different sizes, in order to adapt to different construction requirements and avoid material waste caused by secondary processing of the formwork. This is specifically embodied in the following embodiments: Example 1

[0048] like Figures 1-7 As shown, this embodiment provides an adjustable independent column steel formwork, including two L-shaped right-angle plates 1. The two L-shaped right-angle plates 1 form a detachable connection and can be used for formwork support of the smallest independent columns during construction.

[0049] In this embodiment, when the two L-shaped right-angle plates 1 are detachably connected, an L-shaped connecting plate 4 is also included. Each of the two ends of the L-shaped right-angle plate 1 is provided with a first connecting plate 11, and the L-shaped connecting plate 4 is detachably connected to the two first connecting plates 11 via positioning pins 5.

[0050] Specifically, the first connecting plate 11 has a plurality of first key holes 111, and the two sides of the L-shaped connecting plate 4 have a plurality of fourth key holes 41 respectively. Each fourth key hole 41 is adapted to the first key hole 111, that is, their intervals are the same.

[0051] When the first connecting plate 11 of the L-shaped right-angle plate 1 abuts against the side of the L-shaped connecting plate 4, the first keyhole 111 and the fourth keyhole 41 at the same horizontal position coincide. The positioning pin 4 passes through the matching first keyhole 111 and fourth keyhole 41 to form the assembly and splicing of the L-shaped connecting plate 4 and the L-shaped right-angle plate 1.

[0052] Furthermore, the positioning pin 5 passes through the abutting first keyhole 11 and fourth keyhole 41. The positioning pin 5 includes a matching pin 51 and a pin piece 52. The pin 51 has a through hole 511 for inserting the pin piece 52. When using the positioning pin 5 for fixing, the pin 51 is passed through the matching first keyhole 11 and fourth keyhole 41, and then the pin piece 52 is passed through the through hole 511 on the pin 51.

[0053] It is worth noting that in this embodiment, the two L-shaped right-angle plates 1 are connected by a tongue and groove joint 6. The tongue and groove joint 6 ensures the tightness of the splicing of each plate through the interlocking between the two adjacent plates. Specifically, a tongue and groove protrusion 12 is provided at one end of the L-shaped right-angle plate 1, and a tongue and groove recess 13 is provided at the other end of the L-shaped right-angle plate 1. During splicing, the tongue and groove protrusion 12 of one L-shaped right-angle plate 1 interlocks with the tongue and groove recess 13 of the other L-shaped right-angle plate 1. This structural design allows the two L-shaped right-angle plates 1 to fit together and interlock, ensuring the tightness of their splicing.

[0054] In this embodiment, in order to strengthen the stability of the steel formwork structure, a first keel 14 is also arranged outside the L-shaped right-angle plate 1. In this embodiment, the steel formwork assembled by two L-shaped right-angle plates 1 and two L-shaped splicing plates 2 through two L-shaped connecting plates 4 can be used for the formwork of the smallest size independent column in construction.

[0055] Embodiment two:

[0056] The adjustable independent column steel formwork provided in this embodiment comprises two diagonally arranged L-shaped right-angle plates 1 and two diagonally arranged L-shaped splicing plates 2; adjacent L-shaped right-angle plates 1 and L-shaped splicing plates 2 are connected through positioning pins.

[0057] In this embodiment, as shown in Figure 8 the two ends of the L-shaped right-angle plate 1 are respectively provided with a first connecting plate 11, and the two ends of the L-shaped splicing plate 2 are respectively provided with a second connecting plate 21. The first connecting plate 11 and the second connecting plate 21 are detachably connected through the positioning pin 4, which is used to form the assembly and splicing of the two L-shaped right-angle plates 1 and the two L-shaped splicing plates 2. In this embodiment, in order to strengthen the stability of the steel formwork structure, a first keel 14 is also arranged outside the L-shaped right-angle plate 1, and a second keel 22 is also arranged outside the L-shaped splicing plate 2.

[0058] More specifically, the two ends of the L-shaped right-angle plate 1 are respectively provided with a first connecting plate 11, and the L-shaped right-angle plate 1 as a whole has a groove structure with an opening facing outward. The first connecting plate 11 is provided with a plurality of first pin key holes 111.

[0059] The two ends of the L-shaped splicing plate 2 are respectively provided with a second connecting plate 21, and the L-shaped splicing plate 2 as a whole has a groove structure with an opening facing outward. The second connecting plate 21 is provided with a plurality of second pin key holes 211.

[0060] Each of the first pin key holes 111 and the second pin key holes 211 is adapted in horizontal position, that is, the interval of each of them is the same.

[0061] When the first connecting plate 11 of the L-shaped right-angle plate 1 and the second connecting plate 21 of the L-shaped splicing plate 2 abut, each of the first pin key holes 111 and the second pin key holes 211 in the same horizontal position coincides. The positioning pin 4 is used to pass through the adapted first pin key holes 111 and the second pin key holes 211, thereby forming the assembly and splicing of the two L-shaped right-angle plates 1 and the two L-shaped splicing plates 2.

[0062] Among them, the positioning pin 5 comprises a pin 51 and a pin 52, and the pin 51 is provided with a through hole 511 for inserting the pin 52. When the positioning pin 5 is used for fixing, the pin 51 is passed through the adapted first pin key holes 111 and the second pin key holes 211, and then the pin 52 is passed through the through hole 511 of the pin 51.

[0063] In this embodiment, the L-shaped right-angle plates 1 and the L-shaped splicing plates 2 are connected by the tongue-and-groove 5, which ensures the compactness of the splicing of each plate by the engagement between two adjacent plates. That is, the tongue-and-groove convex part of the L-shaped right-angle plate 1 engages with the tongue-and-groove concave part of the L-shaped splicing plate 2, and the tongue-and-groove concave part of the L-shaped right-angle plate 1 engages with the tongue-and-groove convex part of the L-shaped splicing plate 2. Such a structure design can make the L-shaped right-angle plate 1 and the L-shaped splicing plate 2 spliced to form a compact independent column steel formwork.

[0064] In this embodiment, the steel formwork spliced and assembled by the two L-shaped right-angle plates and the two L-shaped splicing plates 2 can be used for the formwork of a slightly large size independent column in construction.

[0065] Embodiment three:

[0066] The adjustable independent column steel formwork provided in this embodiment, as shown in Figure 1 and Figure 9 includes two diagonally arranged L-shaped right-angle plates 1 and two diagonally arranged L-shaped splicing plates 2, and a one-piece splicing plate 3 is arranged between adjacent L-shaped right-angle plates 1 and L-shaped splicing plates 2. The two ends of the one-piece splicing plate 3 are respectively connected with the L-shaped right-angle plates 1 and the L-shaped splicing plates 2 through the positioning pins 5 to form detachable connections.

[0067] The two ends of the L-shaped right-angle plate 1 are respectively provided with the first connecting plates 11, and the first connecting plates 11 are provided with a plurality of first pin key holes 111. The two ends of the L-shaped splicing plate 2 are respectively provided with the second connecting plates 21, and the second connecting plates 21 are provided with a plurality of second pin key holes 211. The two ends of the one-piece splicing plate 3 are respectively provided with the third connecting plates 31, and the third connecting plates 31 are respectively provided with third pin key holes 311. The first pin key holes 111, the second pin key holes 211, and the third pin key holes 311 are matched, and the intervals thereof are the same.

[0068] In this embodiment, the third connecting plates 31 of the one-piece splicing plate 3 are detachably connected with the first connecting plates 11 of the L-shaped right-angle plates 1 through the positioning pins 5, and the other third connecting plates 31 of the one-piece splicing plate 3 are detachably connected with the second connecting plates 21 of the L-shaped splicing plates 2 through the positioning pins 5. That is, the two ends of the one-piece splicing plate 3 are respectively connected with the L-shaped right-angle plates 1 and the L-shaped splicing plates 2 through the positioning pins 5 to form detachable connections.

[0069] The positioning pins 5 pass through the matched first pin key holes 111 and third pin key holes 311, and the matched second pin key holes 211 and third pin key holes 311 to form the assembly and splicing of the one-piece splicing plate 3 and the two L-shaped right-angle plates 1 and the two L-shaped splicing plates 2.

[0070] In this embodiment, when the L-shaped right-angle plates 1, the L-shaped splicing plates 2, and the one-piece splicing plate 3 are connected, the tongue-and-groove 5 is used for connection to ensure the compactness of the independent column steel formwork spliced by each plate.

[0071] In the embodiment, a one-piece splice plate 3 is also arranged between the two L-shaped right-angle plates 1 and the L-shaped splice plates 2, which increases the size of the assembled independent column steel formwork, so that it can be used for the formwork of larger independent columns in construction.

[0072] Embodiment Four

[0073] In the embodiment, a one-piece splice plate 3 is also arranged between the two L-shaped right-angle plates 1 and the L-shaped splice plates 2, which increases the size of the assembled independent column steel formwork, so that it can be used for the formwork of larger independent columns in construction.

[0074] The positioning pin 5 penetrates the abutting first pin key hole 111 and the third pin key hole 311, the abutting second pin key hole 211 and the third pin key hole 311, and the abutting two third pin key holes 311.

[0075] The first pin key hole and the fourth pin key hole, the abutting first pin key hole and the second pin key hole, the abutting first pin key hole and the third pin key hole, and the abutting second pin key hole and the third pin key hole form the assembly and splicing of the plurality of one-piece splice plates 3 and the two L-shaped right-angle plates 1 and the two L-shaped splice plates 2. The adjacent two one-piece splice plates 3 are connected by a tongue-and-groove joint to ensure the compactness of the independent column steel formwork formed by splicing.

[0076] In the embodiment, a plurality of one-piece splice plates 3 are also arranged between the two L-shaped right-angle plates and the L-shaped splice plates 2, which further increases the size of the assembled independent column steel formwork, so that it can be used for the formwork of more different sizes of independent columns in construction. The one-piece splice plates 3 can be made into corresponding modules according to the size changes of the project independent columns. By placing different numbers of one-piece splice plates 3 between the L-shaped right-angle plates 1 and the L-shaped splice plates 2, the formwork can be applied to the formwork of independent columns of various sizes, avoiding material waste caused by secondary processing of the formwork.

[0077] The adjustable independent column steel formwork provided by the above embodiments can solve the problem of material and labor waste caused by the need to reprocess the size of the steel formwork when the cross section of the cast-in-place column changes. At the same time, the ends of the L-shaped right-angle plates 1, the L-shaped splice plates 2, and the one-piece splice plates 3 are respectively arranged with connecting plates, and the shapes of the connections of the components are respectively L-shaped, which facilitates the on-site formwork assembly and construction.

[0078] According to the size variation interval of the independent column in the application project, the actual size value of the L-shaped right-angle plate 1, the L-shaped splicing plate 2 and the linear splicing plate 3 is determined, two L-shaped right-angle plates 1 are connected through the L-shaped connecting plate 4, and the formwork of the smallest independent column in the project can be supported. The steel formwork assembled by two L-shaped right-angle plates 1 and two L-shaped splicing plates 2 can be used for supporting the formwork of the slightly large size independent column in the construction. The linear splicing plate 3 is arranged between the two L-shaped right-angle plates 1 and the L-shaped splicing plate 2, the size of the assembled independent column steel formwork is increased, and thus the steel formwork can be used for supporting the formwork of the larger size independent column in the construction. A plurality of linear splicing plates 3 are arranged between the two L-shaped right-angle plates 1 and the L-shaped splicing plate 2, the size of the assembled independent column steel formwork is further increased, and thus the steel formwork can be used for supporting the formwork of more different size independent columns in the construction.

[0079] In the above various embodiments, the L-shaped right-angle plate 1, the L-shaped splicing plate 2 and the linear splicing plate 3 are all provided with a tongue-and-groove at the end, the tongue-and-groove is used for connecting between each plate, the compactness of the formwork splicing is ensured, and the risk of slurry leakage at the splicing position is reduced.

[0080] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable independent column steel formwork, characterized in that, It includes two L-shaped right-angle plates (1), two L-shaped splicing plates (2), and several straight splicing plates (3); the L-shaped right-angle plates (1), L-shaped splicing plates (2), and straight splicing plates (3) are connected in one of the following ways: The two L-shaped right-angle plates (1) form a detachable connection; Alternatively, the adjacent L-shaped right-angle plate (1) and L-shaped splicing plate (2) can be detachably connected; Alternatively, the straight splicing plate (3) is arranged between the L-shaped right-angle plate (1) and the L-shaped splicing plate (2), and the two ends of the straight splicing plate (3) are detachably connected to the L-shaped right-angle plate (1) and the L-shaped splicing plate (2).

2. The adjustable independent column steel formwork according to claim 1, characterized in that, The two ends of the L-shaped right-angle plate (1) are respectively provided with a first connecting plate (11); the two ends of the L-shaped splicing plate (2) are respectively provided with a second connecting plate (21); the two ends of the straight splicing plate (3) are respectively provided with a third connecting plate (31).

3. The adjustable independent column steel formwork according to claim 2, characterized in that, When the two L-shaped right-angle plates (1) are detachably connected, an L-shaped connecting plate (4) is also included; the L-shaped connecting plate (4) is detachably connected to the two first connecting plates (11) respectively by positioning pins (5).

4. The adjustable independent column steel formwork according to claim 3, characterized in that, The first connecting plate (11) of the adjacent L-shaped right-angle plate (1) and the second connecting plate (21) of the L-shaped splicing plate (2) are detachably connected by a positioning pin (5).

5. The adjustable independent column steel formwork according to claim 4, characterized in that, The third connecting plates (31) at both ends of the straight splicing plate (3) are detachably connected to the first connecting plate (11) of the L-shaped right angle plate (1) and the second connecting plate (21) of the L-shaped splicing plate (2) through positioning pins (5).

6. The adjustable independent column steel formwork according to claim 5, characterized in that, After multiple straight splicing panels (3) are connected in sequence to form an extension plate, the two ends of the extension plate are detachably connected to the L-shaped right-angle plate (1) and the L-shaped splicing panel (2) through positioning pins (5); The two abutting third connecting plates (31) are detachably connected by a positioning pin (5).

7. The adjustable independent column steel formwork according to claim 6, characterized in that, The first connecting plate (11) has a plurality of first key holes (111), the second connecting plate (21) has a plurality of second key holes (211), and the two sides of the third connecting plate (31) have third key holes (311); each of the first key holes (111), second key holes (211), and third key holes (311) is compatible with each other; The L-shaped connecting plate (4) has several fourth key holes (41) on its two sides, and each of the fourth key holes (41) is adapted to the first key hole (111).

8. The adjustable independent column steel formwork according to claim 7, characterized in that, The positioning pin (5) passes through the first keyhole (111) and the fourth keyhole (41) that abut against each other, the first keyhole (111) and the second keyhole (211) that abut against each other, the first keyhole (111) and the third keyhole (311) that abut against each other, the second keyhole (211) and the third keyhole (311) that abut against each other, and the two third keyholes (311) that abut against each other.

9. The adjustable independent column steel formwork according to claim 8, characterized in that, The positioning pin (5) includes a matching pin (51) and a pin piece (52).

10. The adjustable independent column steel formwork according to claim 9, characterized in that, The L-shaped right-angle plate (1) and the L-shaped splicing plate (2) are connected by tongue and groove joints; The L-shaped right-angle plate (1) and the straight splicing plate (3) are connected by tongue and groove joints; The L-shaped splicing panel (2) and the straight splicing panel (3) are connected by tongue and groove joints; The two adjacent straight splicing panels (3) are connected by tongue and groove joints.

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