Steel structure cup rabbet inner side formwork system
Through the adoption of the inner formwork system of the steel structure cup mouth, including the combination of the bottom form assembly, the side form assembly and the central shaft assembly, the difficulty in installing and dismantling the inner formwork of the cup mouth foundation and the floating positioning problems on the formwork are solved, and efficient formwork use and the guarantee of concrete forming quality is achieved.
Patent Information
- Application Number
- CN202421945302.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-12
AI Technical Summary
It is difficult to install and dismantle the inner formwork of the existing concrete cup-shaped foundation, resulting in waste of materials. During the concrete pouring process, the inner formwork is prone to float and deviate, affecting the forming quality.
A steel structure cup mouth inner formwork system is adopted, including a base form assembly, a side form assembly and a central shaft assembly. Through the combination and disassembly of these components, an adjustable formwork structure is formed to ensure the stability and reusability of the formwork.
It solves the problem of manual installation and removal of the formwork on the inner side of the cup mouth foundation, reduces material waste, and prevents the formwork from floating and deviating during concrete pouring, ensuring that the molding quality meets the design requirements.
Smart Images
Figure CN222908873U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, and particularly relates to an inner formwork system for the cup of a steel structure. Background Art
[0002] At present, most of the foundation forms of prefabricated industrial plants and steel structure buildings adopt concrete cup-shaped foundations. The shapes of the cup-shaped foundations are all inverted cones with larger upper parts and smaller lower parts. The inner formwork of the cup is usually made of wood-glued composite boards, and the construction process of bulk disassembly or making into a box-shaped mold for overall core extraction is adopted. Moreover, when considering multiple factors such as foundation burial depth, steel structure height, and anti-overturning of the steel column in the foundation design, the cup is often designed to be smaller and deeper. It is simply impossible for operators to enter the high cup to carry out formwork installation and removal operations. Almost all the removed formwork is damaged and cannot be reused, resulting in a large amount of material waste. Moreover, during the concrete pouring process of the cup foundation, the inner formwork is prone to floating and deviation, and it is difficult to ensure that the cup size of the cup foundation meets the design requirements after pouring. Content of the Utility Model
[0003] The utility model provides an inner formwork system for the cup of a steel structure to solve one or several of the technical problems existing in the prior art.
[0004] The technical solution of the utility model for solving the above technical problems is as follows: An inner formwork system for the cup of a steel structure includes a bottom formwork assembly, a side formwork assembly, and a central axis assembly. The bottom formwork assembly includes a bottom formwork steel plate, bottom formwork angle steel, and a base. The bottom formwork steel plate is horizontally arranged, and a circle of bottom formwork angle steel is provided on the upper surface of the four edges. A base is provided on the upper surface of the central position of the bottom formwork steel plate. The base is in a cylindrical structure with an open upper end. The central axis of the cylindrical structure is perpendicularly arranged with the bottom formwork steel plate. A first limiting member and a second limiting member are arranged at intervals up and down inside the cylindrical structure.
[0005] The side formwork assembly includes side formwork steel plates, side formwork angle steel, and corner steel plates. The side formwork steel plates are multiple and vertically arranged. Adjacent two side formwork steel plates are limited by corner steel plates. Multiple side formwork steel plates and multiple corner steel plates enclose to form a cylindrical support structure. Multiple horizontal connecting members are provided on the corner steel plates. The horizontal connecting members are right-angled triangular plates arranged horizontally. The corner steel plates are L-shaped steel plates. Multiple layers of horizontally arranged side formwork angle steel are provided on the inner side surface of the side formwork steel plates.
[0006] The central axis assembly comprises a central axis, a round tube, a support plate and a support rod, wherein the central axis is sleeved in the round tube and is rotatably connected to the round tube through a rotating bearing, the central axis is arranged vertically, the lower end of the central axis extends from the lower end of the round tube and a third limiter is connected to the side wall, and a multi-layer support plate is arranged on the outer side wall of the round tube along its own axial direction, and a multi-layer transverse connecting piece, a multi-layer side mold angle steel and a multi-layer support plate are correspondingly arranged in the horizontal direction; each layer of correspondingly arranged transverse connecting pieces and side mold angle steels are detachably connected to the corresponding support plate through a support rod;
[0007] Wherein, the lower end of the circular tube is inserted into the base, and the third limiting member is located below the first limiting member or below the second limiting member.
[0008] The beneficial effects of the utility model are as follows: the steel structure cup mouth inner formwork system of the utility model adopts a solution combining a bottom formwork assembly, a side formwork assembly and a central axis assembly, which can solve the technical problems of the difficulty and waste of materials in manually installing and dismantling the inner formwork of the cup mouth foundation in the cup mouth, as well as the floating and deflection of the inner formwork of the cup mouth during concrete pouring.
[0009] On the basis of the above technical solution, the present invention can also be improved as follows.
[0010] Furthermore, the bottom mold steel plate is rectangular, the side mold steel plates are four, and the lower ends of the four side mold steel plates are respectively arranged on the four sides of the bottom mold steel plate; the corner steel plates are four and are respectively arranged at the corners of the four side mold steel plates.
[0011] The beneficial effect of adopting the above further solution is that the entire formwork system can be formed by cooperating with the bottom formwork steel plate and the side formwork steel plate.
[0012] Furthermore, the bottom mold steel plate includes a center steel plate, side steel plates and angle steel plates. The center steel plate is a rectangular plate. The four sides of the center steel plate are hinged with side steel plates respectively through hinges. A rectangular interval is formed between two adjacent side steel plates. Two angle steel plates are arranged in the rectangular interval. The two angle steel plates are right-angled triangle structures. The hypotenuses of the two angle steel plates are arranged relatively spaced apart, and the adjacent right-angled sides of the two angle steel plates are hinged with the adjacent side steel plates respectively through hinges; one axial end of the base is fixed at the center position of the center steel plate.
[0013] The beneficial effect of adopting the above further scheme is that the bottom mold steel plate adopts a central steel plate, side steel plates and angle steel plates that are hinged to each other. When the round tube is lifted, the bottom mold steel plate can be folded and gathered into a smaller structure.
[0014] Further, the first limiting member includes a plurality of first limiting plates, which are evenly arranged at intervals along the circumferential direction of the cylindrical structure. A first insertion and extraction opening is formed between two adjacent first limiting plates, and the plurality of first limiting plates enclose a first through hole;
[0015] The second limiting member includes a plurality of second limiting plates, which are evenly arranged at intervals along the circumferential direction of the cylindrical structure. A second insertion and extraction opening is formed between two adjacent second limiting plates, and the plurality of second limiting plates enclose a second through hole; The round tube can pass through the first through hole and the second through hole.
[0016] Further, the plurality of first limiting plates and the plurality of second limiting plates are arranged in a one-to-one correspondence up and down, and the plurality of first insertion and extraction openings and the plurality of second insertion and extraction openings are arranged in a one-to-one correspondence; The free end of the third limiting member extends out of the outer side of the round tube, and the third limiting member can pass through the first insertion and extraction opening and the second insertion and extraction opening and can abut against the lower side surface of the first limiting plate or the lower side surface of the second limiting plate after rotation.
[0017] Further, from top to bottom, the inner diameter of the cylindrical support structure gradually increases, and the lengths of the multiple layers of support rods gradually increase.
[0018] Further, the third limiting member is a limiting rod, and the limiting rod is arranged along the radial direction of the round tube.
[0019] Further, a plurality of first hanging holes are formed in the support disc, and the plurality of first hanging holes are evenly arranged along the circumferential direction of the support disc; Second hanging holes are formed in the side die angle steel, third hanging holes are formed in the transverse connecting member, and hooks are respectively formed by bending the two ends of the support rod, and the two ends of the support rod are respectively hung in the first hanging hole and the corresponding second hanging hole or third hanging hole.
[0020] Further, the two right-angled sides of the right-angled triangular plate are respectively vertically and fixedly connected to the two inner right-angled surfaces of the angle steel plate.
[0021] Further, the L-shaped steel plate is vertically arranged, and limiting angle steels are respectively arranged at both ends of the angle steel plate, and the limiting angle steels are vertically arranged. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a schematic cross-sectional structure diagram of the inner formwork system of the steel structure cup mouth of the present invention Figure 1 ;
[0023] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in
[0024] Figure 3 is Figure 2 an enlarged structural schematic diagram of part B in
[0025] Figure 4 It is a top view structural schematic diagram of the inner side template system of the cup mouth of the steel structure of the utility model;
[0026] Figure 5 for Figure 4 The enlarged structural diagram of the middle C part;
[0027] Figure 6 This is a schematic diagram of the main structure of the bottom mold steel plate of the utility model;
[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the bottom mold steel plate of the utility model;
[0029] Figure 8 The cross-sectional structure diagram of the inner side template system of the steel structure cup mouth of the utility model Figure 2 ;
[0030] Figure 9 for Figure 8 The enlarged structural diagram of the middle D part;
[0031] Figure 10 for Figure 9 Schematic diagram of the enlarged structure of part E in the middle.
[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0033] 1. Bottom mold steel plate; 11. Bottom mold angle steel; 12. Base; 13. First limit plate; 14. Second limit plate; 15. First plug-in port; 16. Center steel plate; 17. Side steel plate; 18. Angle steel plate; 19. Hinge;
[0034] 2. Side form steel plate; 21. Side form angle steel; 22. Angle steel plate; 23. Horizontal connector; 24. Limit angle steel;
[0035] 3. Central axis; 31. Round tube; 32. Support plate; 33. Support rod; 34. Limit rod;
[0036] 4. Steel structure cup mouth. DETAILED DESCRIPTION
[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0038] like Figures 1 to 10As shown, a steel structure cup mouth inner side formwork system of the present embodiment comprises a bottom formwork assembly, a side formwork assembly and a central axis assembly, wherein the bottom formwork assembly comprises a bottom formwork steel plate 1, a bottom formwork angle steel 11 and a base 12, wherein the bottom formwork steel plate 1 is arranged horizontally and a circle of bottom formwork angle steel 11 is arranged on the upper surface of the edges thereof, wherein a base 12 is arranged on the upper surface of the center position of the bottom formwork steel plate 1, wherein the base 12 is a cylindrical structure with an open upper end, wherein the central axis of the cylindrical structure is arranged vertically to the bottom formwork steel plate 1, and wherein a first stopper and a second stopper arranged at intervals from top to bottom are arranged on the inner side of the cylindrical structure;
[0039] The side form assembly includes a side form steel plate 2, a side form angle steel 21 and a corner steel plate 22. The side form steel plates 2 are multiple and arranged vertically. Two adjacent side form steel plates 2 are limited by the corner steel plates 22. The multiple side form steel plates 2 and the multiple corner steel plates 22 are surrounded to form a cylindrical support structure. The corner steel plates 22 are provided with multiple layers of transverse connectors 23. The transverse connectors 23 are transversely arranged right-angled triangle plates. The corner steel plates 22 are L-shaped steel plates. The inner side surfaces of the side form steel plates 2 are provided with multiple layers of transversely arranged side form angle steels 21.
[0040] The central axis assembly includes a central axis 3, a circular tube 31, a support plate 32 and a support rod 33. The central axis 3 is sleeved in the circular tube 31 and is rotatably connected to the circular tube 31 through a rotating bearing. The central axis 3 is arranged vertically, and the lower end of the central axis 3 extends out from the lower end of the circular tube 31 and is connected to a third limiter on the side wall. The outer wall of the circular tube 31 is provided with a multi-layer support plate 32 along its own axial direction, and the multi-layer transverse connecting members 23, the multi-layer side mold angle steel 21 and the multi-layer support plate 32 are arranged correspondingly in the horizontal direction; the correspondingly arranged transverse connecting members 23 and the side mold angle steel 21 of each layer are detachably connected to the corresponding support plate 32 through the support rod 33; the multiple support rods 33 of each layer can form a M-shaped structure, such as Figure 4 shown.
[0041] The lower end of the circular tube 31 is inserted into the base 12, and the third stopper is located below the first stopper or below the second stopper. Specifically, the third stopper is inserted into the base 12, and when the third stopper is limited below the second stopper, the support rod 33 is arranged horizontally, so that the side mold assembly and the bottom mold assembly form the inner mold of the steel structure cup mouth; when the third stopper is pulled up and limited below the first stopper, the support rod 33 is arranged tilted, so that the side mold assembly and the bottom mold assembly are gathered toward the center.
[0042] like Figures 1 to 5As shown, the bottom die steel plate 1 of this embodiment is rectangular, and there are four side die steel plates 2. The lower ends of the four side die steel plates 2 are respectively arranged around the four sides of the bottom die steel plate 1; there are four corner steel plates 22, which are respectively arranged at the corners of the four side die steel plates 2. The entire formwork system can be formed by the cooperation of the bottom die steel plate and the side die steel plates.
[0043] As Figure 6 shown, the bottom die steel plate 1 of this embodiment includes a central steel plate 16, side steel plates 17 and corner steel plates 18. The central steel plate 16 is a rectangular plate. Side steel plates 17 are hinged to the four sides of the central steel plate 16 through hinges 19 respectively. A rectangular interval is formed between two adjacent side steel plates 17. Two corner steel plates 18 are arranged in the rectangular interval. The two corner steel plates 18 are right triangle structures. The hypotenuses of the two corner steel plates 18 are arranged opposite to each other at intervals. The adjacent right sides of the two corner steel plates 18 are respectively hinged to the adjacent side steel plates 17 through hinges 19; one end of the base 12 in the axial direction is fixed at the central position of the central steel plate 16. The bottom die steel plate adopts a central steel plate, side steel plates and corner steel plates that are hinged to each other. When the round tube is lifted, the bottom die steel plate can be folded and retracted into a structure with a smaller size.
[0044] Specifically, the bottom die angle steels 11 can be respectively arranged on the outermost sides of the side steel plates 17 and the corner steel plates 18.
[0045] As Figure 6 and Figure 7 shown, the first limiting member of this embodiment includes a plurality of first limiting plates 13. The plurality of first limiting plates 13 are evenly arranged at intervals along the circumferential direction of the cylindrical structure. A first insertion and extraction opening 15 is formed between two adjacent first limiting plates 13. The plurality of first limiting plates 13 enclose to form a first through hole; the second limiting member includes a plurality of second limiting plates 14. The plurality of second limiting plates 14 are evenly arranged at intervals along the circumferential direction of the cylindrical structure. A second insertion and extraction opening is formed between two adjacent second limiting plates 14. The plurality of second limiting plates 14 enclose to form a second through hole; the round tube 31 can pass through the first through hole and the second through hole; the plurality of first limiting plates 13 and the plurality of second limiting plates 14 are arranged in a one-to-one correspondence up and down. The plurality of first insertion and extraction openings 15 are arranged in a one-to-one correspondence with the plurality of second insertion and extraction openings; the free end of the third limiting member extends out of the outer side of the round tube 31. The third limiting member can pass through the first insertion and extraction opening 15 and the second insertion and extraction opening and can be abutted against the lower side surface of the first limiting plate 13 or the lower side surface of the second limiting plate 14 after rotation.
[0046] As Figure 1 and Figure 8As shown, from top to bottom, the inner diameter of the cylindrical support structure gradually increases, and the lengths of the multiple support rods 33 gradually increase. This can make the steel structure cup mouth 4 formed by pouring be a regular conical shape with a smaller top and a larger bottom, which can effectively solve the problem of the inner formwork floating and shifting during the pouring process of the cup mouth concrete, ensure the forming quality after the cup mouth pouring is completed, and meet the standards required by the design and specifications.
[0047] As Figure 3 and Figure 10 shown, in this embodiment, the third limiting member is a limiting rod 34, and the limiting rod 34 is arranged along the radial direction of the circular tube 31.
[0048] As Figure 4 and Figure 5 shown, in this embodiment, a plurality of first hanging holes are formed in the support disc 32, and the plurality of first hanging holes are uniformly arranged along the circumferential direction of the support disc 32; second hanging holes are formed in the side formwork angle steel 21, third hanging holes are formed in the transverse connecting member 23, and hooks are respectively bent at both ends of the support rod 33, and both ends of the support rod 33 are respectively hung in the first hanging holes and the corresponding second hanging holes or third hanging holes.
[0049] As Figure 5 shown, in this embodiment, the two right-angled sides of the right-angled triangular plate are respectively vertically and fixedly connected to the two inner right-angled surfaces of the angle position steel plate 22.
[0050] As Figure 4 and Figure 5 shown, in this embodiment, the L-shaped steel plate is vertically arranged, and limiting angle steels 24 are respectively arranged at both ends of the angle position steel plate 22, and the limiting angle steels 24 are vertically arranged. The length of the angle position steel plate 22 is the same as the length of the side formwork steel plate 2.
[0051] For the inner formwork system of the steel structure cup mouth in this embodiment, the scheme of combining the bottom formwork assembly, the side formwork assembly and the central axis assembly is adopted, which can solve the technical problems that it is difficult to install and remove the inner formwork of the cup mouth foundation manually inside the cup mouth and waste materials, and the inner formwork of the cup mouth floats and deviates during the concrete pouring process.
[0052] This embodiment also provides a construction method for the above-mentioned inner formwork system of the steel structure cup mouth, including the following steps: respectively installing the bottom formwork assembly, the side formwork assembly and the central axis assembly;
[0053] Before pouring the steel structure cup mouth 4, the third limiting member on the outer wall of the circular tube 31 is limited below the second limiting member. At this time, the support rod 33 is horizontally arranged, and the lower part of the side formwork steel plate 2 abuts against the outside of the bottom formwork angle steel 11; the release agent can be uniformly applied on the outer surfaces of the side formwork steel plate 2 and the bottom formwork steel plate 1.
[0054] After the steel structure cup 4 is cast, the circular tube 31 is rotated to release the third limit member from the second limit member, the circular tube 31 is pulled upward to make the third limit member located between the first limit member and the second limit member, and the circular tube 31 is rotated again to make the third limit member limited below the first limit member; at this time, the support rod 33 is arranged tilted downward with the circular tube 31 as the center, and the bottom mold steel plate 1, the side mold steel plate 2 and the corner steel plate 22 are retracted inward.
[0055] The construction method of this embodiment can ensure the molding quality of the cup mouth after the concrete pouring is completed, and can be used repeatedly, saving materials, reducing costs, and achieving a green, low-carbon and environmentally friendly effect.
[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0059] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.
[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.
[0061] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. A steel structure cup inner side formwork system, characterized in that: It comprises a bottom mold assembly, a side mold assembly and a central axis assembly, wherein the bottom mold assembly comprises a bottom mold steel plate, a bottom mold angle steel and a base, wherein the bottom mold steel plate is arranged horizontally and a circle of bottom mold angle steel is arranged on the upper surface of the edges around it, and a base is arranged on the upper surface of the center position of the bottom mold steel plate, and the base is in the form of a cylindrical structure with an open upper end, and the central axis of the cylindrical structure is arranged vertically to the bottom mold steel plate, and the inner side of the cylindrical structure is provided with a first stopper and a second stopper arranged in an upper and lower interval; The side form assembly comprises a side form steel plate, a side form angle steel and a corner steel plate. The side form steel plates are arranged in a plurality in a vertical manner. Two adjacent side form steel plates are limited by the corner steel plates. The plurality of side form steel plates and the plurality of corner steel plates are combined to form a cylindrical support structure. The corner steel plates are provided with multiple layers of transverse connectors, which are transversely arranged right-angled triangle plates. The corner steel plates are L-shaped steel plates. The inner side surfaces of the side form steel plates are provided with multiple layers of transversely arranged side form angle steels. The central axis assembly comprises a central axis, a round tube, a support plate and a support rod, wherein the central axis is sleeved in the round tube and is rotatably connected to the round tube through a rotating bearing, the central axis is arranged vertically, the lower end of the central axis extends from the lower end of the round tube and a third limiter is connected to the side wall, and a multi-layer support plate is arranged on the outer side wall of the round tube along its own axial direction, and a multi-layer transverse connecting piece, a multi-layer side mold angle steel and a multi-layer support plate are correspondingly arranged in the horizontal direction; each layer of correspondingly arranged transverse connecting pieces and side mold angle steels are detachably connected to the corresponding support plate through a support rod; Wherein, the lower end of the circular tube is inserted into the base, and the third limiting member is located below the first limiting member or below the second limiting member.
2. A steel structure cup inner side formwork system according to claim 1, characterized in that: The bottom mold steel plate is rectangular, and there are four side mold steel plates, and the lower ends of the four side mold steel plates are respectively arranged on the four sides of the bottom mold steel plate; there are four corner steel plates and they are respectively arranged at the corners of the four side mold steel plates.
3. A steel structure cup inner side formwork system according to claim 2, characterized in that: The bottom mold steel plate includes a center steel plate, side steel plates and angle steel plates. The center steel plate is a rectangular plate. The four sides of the center steel plate are hinged with side steel plates respectively through hinges. A rectangular interval is formed between two adjacent side steel plates. Two angle steel plates are arranged in the rectangular interval. The two angle steel plates are right-angled triangle structures. The hypotenuses of the two angle steel plates are arranged relatively spaced apart, and the adjacent right-angled sides of the two angle steel plates are hinged with the adjacent side steel plates respectively through hinges; one axial end of the base is fixed at the center position of the center steel plate.
4. A steel structure cup inner side formwork system according to claim 1, characterized in that: The first limiting member includes a plurality of first limiting plates, which are evenly spaced along the circumference of the cylindrical structure, a first plug-in port is formed between two adjacent first limiting plates, and the plurality of first limiting plates are combined to form a first through hole; The second limiting member includes a plurality of second limiting plates, which are evenly spaced along the circumference of the cylindrical structure, a second plug-in port is formed between two adjacent second limiting plates, and a second through hole is formed by the plurality of second limiting plates; the round tube can pass through the first through hole and the second through hole.
5. A steel structure cup inner side formwork system according to claim 4, characterized in that: Multiple first limit plates and multiple second limit plates are arranged one by one, and multiple first plug ports and multiple second plug ports are arranged one by one; the free end of the third limit member extends out of the outside of the round tube, and the third limit member can pass through the first plug port and the second plug port and can abut against the lower side surface of the first limit plate or the lower side surface of the second limit plate after rotation.
6. A steel structure cup inner side formwork system according to claim 1, characterized in that: From top to bottom, the inner diameter of the cylindrical support structure gradually increases, and the lengths of the support rods of the multiple layers gradually increase.
7. A steel structure cup inner side formwork system according to claim 1, characterized in that: The third limiting member is a limiting rod, and the limiting rod is arranged along the radial direction of the circular tube.
8. The steel structure cup inner side formwork system according to claim 1, characterized in that: The support plate is provided with a plurality of first hanging holes, which are evenly arranged along the circumference of the support plate; the side mold angle steel is provided with a second hanging hole, and the transverse connecting member is provided with a third hanging hole. Both ends of the support rod are bent to form hooks, and both ends of the support rod are respectively hung in the first hanging hole and the corresponding second hanging hole or the third hanging hole.
9. A steel structure cup inner side formwork system according to claim 1, characterized in that: The two right-angle sides of the right-angle triangle plate are respectively and vertically fixedly connected to the two inner right-angle surfaces of the corner steel plate.
10. A steel structure cup inner side formwork system according to claim 1, characterized in that: The L-shaped steel plate is arranged vertically, and limiting angle steels are respectively provided at both ends of the corner steel plate, and the limiting angle steels are arranged vertically.