Telescopic independent column steel formwork

Abstract

The utility model discloses a telescopic independent column steel formwork which comprises four steel formworks which are enclosed into a rectangle, each steel formwork comprises a steel panel, a steel plate flange, a channel steel main rib, double rows of channel steel back ridges and connecting angle steel, two rows of vertical variable cross-section adjusting holes are formed in one side of each steel panel, and plastic blocking caps are arranged in the variable cross-section adjusting holes; when a large size is enclosed, two sides of the connecting angle steel are respectively connected with two adjacent steel plate turnups through bolts, and when a small size is enclosed, the fixed connecting holes of the steel plate turnups are connected with the variable cross-section adjusting holes through bolts, openings of the channel steel main reinforcements face the steel plate turnups, and the channel steel main reinforcements are arranged at a plurality of positions on the back face of the steel panel. The channel steel main ribs are flush with the steel plate flanges, and the double-row channel steel back ridges are welded to the ends of the channel steel main ribs and the ends of the steel plate flanges. The steel formwork can be connected with the connecting angle steel or the variable cross-section adjusting holes by adjusting the turned-over edges of the steel plates, so that the size of an enclosed independent column area is changed.

Description

Technical Field

[0001] This utility model belongs to the field of independent column casting, and specifically relates to a retractable independent column steel formwork. Background Technology

[0002] With the continuous development of modern building technology, large-section independent columns have been widely used in structural systems such as high-rise buildings and large industrial plants.

[0003] Traditional construction formwork is mostly of fixed size. When the size of the pouring area needs to be adjusted during construction, multiple formworks need to be replaced or spliced, resulting in low efficiency and high cost. Existing adjustable formwork has problems such as complex structure and poor stability. Utility Model Content

[0004] This utility model provides a retractable independent column steel formwork to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a retractable independent column steel formwork, comprising four steel formwork panels enclosing a rectangle. Each steel formwork panel includes a steel plate flange, a steel plate flange, channel steel main reinforcement, double-row channel steel back ribs, and connecting angle steel. One side of the steel plate is provided with two rows of vertically oriented variable cross-section adjustment holes, and plastic plugs are installed in the variable cross-section adjustment holes. The steel plate flange is integral with the steel plate and has several fixed connection holes. When enclosing a large size, the two sides of the connecting angle steel are respectively connected to two adjacent steel plate flanges by bolts. When enclosing a small size, the fixed connection holes of the steel plate flange are connected to the variable cross-section adjustment holes by bolts. The opening of the channel steel main reinforcement faces the vertical steel plate flange. Several channel steel main reinforcements are provided on the back of the steel plate, and the channel steel main reinforcements are flush with the steel plate flange. The double-row channel steel back ribs are welded to the ends of the channel steel main reinforcements and the steel plate flange.

[0006] Preferably, short channel steel sections are fixedly welded to the outer sides of both ends of the double-row channel steel back rib. The short channel steel sections are butt-welded to the side plates of the double-row channel steel back rib. Reinforcing angle brackets are welded to the outer sides of the two short channel steel sections. The reinforcing angle brackets are welded to the two short channel steel sections.

[0007] Preferably, one of the double-row channel steel back ribs has a U-shaped lifting ring with its opening facing downward welded to its top.

[0008] Preferably, a guy rope is fixedly connected to the U-shaped lifting ring, and the other end of the guy rope is fixed to the ground.

[0009] Preferably, the steel plate flanges on two of the steel panels are arranged perpendicular to the steel panels, and the steel plate flanges on the other two steel panels are arranged at an obtuse angle to the steel panels. The two steel panels with steel plate flanges perpendicular to the steel panels are arranged symmetrically, and the two steel panels with steel plate flanges at an obtuse angle to the steel panels are arranged symmetrically.

[0010] Preferably, one end of the plastic cap has a T-shaped cap, and the plastic cap is interference-fitted into the variable cross-section adjustment hole.

[0011] Preferably, when two adjacent steel plate flanges are connected to angle steel, the space dimension at the independent column is 1300mm x 1300mm; when the steel plate flange is connected to the first row of variable cross-section adjustment holes, the space dimension at the independent column is 1200mm x 1200mm; and when the steel plate flange is connected to the second row of variable cross-section adjustment holes, the space dimension at the independent column is 1100mm x 1100mm.

[0012] The beneficial effects of this utility model are as follows: 1. The steel formwork of this application can change the size of the enclosed independent column area by adjusting the connection between the steel plate flange and the connecting angle steel or the variable cross-section adjustment hole, thereby facilitating the casting of independent columns of different sizes in industrial plants and logistics warehouse buildings, and improving the turnover rate of independent column formwork; 2. The combination of double-row channel steel back ribs, short channel steel sections and reinforcing angle brackets ensures that the steel formwork has high overall structural strength; 3. Lifting rings are provided, which facilitates hoisting construction and allows for reinforcement with guy ropes after erection, eliminating the need for tie bolts and avoiding the impact of bolt hole treatment on appearance; 4. One pair of steel panels and steel plate flanges are obtuse angled, facilitating erection and demolding; 5. The specific dimensions of this embodiment can meet the requirements of three sizes: 1300mm x 1300mm, 1200mm x 1200mm and 1100mm x 1100mm.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of this invention may be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the steel panel structure according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the use of connecting angle steel when enclosing large dimensions according to an embodiment of this utility model;

[0016] Figure 3 This is a schematic diagram of the enclosure of a small size according to an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the plastic cap according to an embodiment of the present invention.

[0018] Attached reference numerals: 1. Steel panel; 2. Steel plate flange; 3. Main reinforcement of channel steel; 4. Double row of channel steel back ribs; 5. Connecting angle steel; 6. Variable cross-section adjustment hole; 7. Plastic plug cap; 8. Fixed connection hole; 9. Short channel steel section; 10. Reinforcing angle bracket; 11. U-shaped lifting ring; 12. Guy rope. Detailed Implementation

[0019] The technical solution of this utility model will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.

[0020] Combination Figure 1-4 A retractable independent column steel formwork includes four rectangular steel formwork panels. Each steel formwork panel includes a steel panel 1, a steel plate flange 2, a channel steel main reinforcement 3, a double row of channel steel back ribs 4, and a connecting angle steel 5. Two rows of vertical variable cross-section adjustment holes 6 are provided on one side of the steel panel 1, and plastic plugs 7 are installed in the variable cross-section adjustment holes 6. The steel plate flange 2 is integral with the steel panel 1 and has several fixed connection holes 8. When enclosing a large size, the two sides of the connecting angle steel 5 are respectively connected to two adjacent steel plate flanges 2 by bolts. When enclosing a small size, the fixed connection holes 8 of the steel plate flange 2 are connected to the variable cross-section adjustment holes 6 by bolts. The opening of the channel steel main reinforcement 3 faces the vertical steel plate flange 2. Several channel steel main reinforcement 3s are provided on the back of the steel panel 1. The channel steel main reinforcement 3 is flush with the steel plate flange 2. The double row of channel steel back ribs 4 are welded to the ends of the channel steel main reinforcement 3 and the steel plate flange 2.

[0021] As a preferred embodiment of this application, short channel steel sections 9 are fixedly welded to the outer sides of both ends of the double-row channel steel back rib 4. The short channel steel sections 9 are butt-welded to the side plates of the double-row channel steel back rib 4. Reinforcing angle brackets 10 are welded to the outer sides of the two short channel steel sections 9. The reinforcing angle brackets 10 are welded to the two short channel steel sections 9.

[0022] As a preferred embodiment of this application, one of the double-row channel steel back ribs 4 has a U-shaped lifting ring 11 with its opening facing downward welded to its top.

[0023] As a preferred embodiment of this application, a guy rope 12 is fixedly connected to the U-shaped lifting ring 11, and the other end of the guy rope 12 is fixed to the ground.

[0024] As a preferred embodiment of this application, the steel plate flanges 2 on two steel panels 1 are arranged perpendicularly to the steel panel 1, and the steel plate flanges 2 on the other two steel panels 1 are arranged at an obtuse angle to the steel panel 1. The steel panels 1 with two steel plate flanges 2 perpendicular to the steel panel 1 are arranged symmetrically, and the steel panels 1 with two steel plate flanges 2 at an obtuse angle to the steel panel 1 are arranged symmetrically.

[0025] As a preferred embodiment of this application, one end of the plastic cap 7 has a T-shaped cap. The plastic cap 7 is interference-fitted into the variable cross-section adjustment hole 6, that is, the diameter of the plastic cap 7 is slightly larger than that of the variable cross-section adjustment hole 6, so that it is tensioned and fitted into the variable cross-section adjustment hole 6. The cap is used to facilitate prying it out when needed.

[0026] As a preferred embodiment of this application, when two adjacent steel plate flanges 2 are connected to angle steel, the space dimension at the independent column is 1300mm x 1300mm; when the steel plate flange 2 is connected to the first row of variable cross-section adjustment holes 6, the space dimension at the independent column is 1200mm x 1200mm; and when the steel plate flange 2 is connected to the second row of variable cross-section adjustment holes 6, the space dimension at the independent column is 1100mm x 1100mm.

[0027] The advantages of this utility model are as follows: 1. The steel formwork of this application can change the size of the enclosed independent column area by adjusting the connection between the steel plate flange 2 and the connecting angle steel 5 or the variable cross-section adjustment hole 6, thereby facilitating the casting of independent columns of different sizes in industrial plants and logistics warehouse buildings, and improving the turnover rate of independent column formwork; 2. The cooperation of double-row channel steel back ribs 4, short channel steel sections 9 and reinforcing angle brackets 10 ensures that the steel formwork has high overall structural strength; 3. Lifting rings are provided, which facilitates hoisting construction and allows for reinforcement with guy ropes 12 after erection, eliminating the need for tie bolts and avoiding the impact of bolt hole treatment on appearance; 4. One pair of steel panels 1 and steel plate flanges 2 form an obtuse angle, facilitating erection and demolding; 5. The specific dimensions of this embodiment can meet the requirements of three sizes: 1300mm x 1300mm, 1200mm x 1200mm and 1100mm x 1100mm.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A retractable independent column steel formwork, characterized in that: The system includes four rectangular steel templates. Each template includes a steel panel (1), a steel plate flange (2), a channel steel main reinforcement (3), a double-row channel steel back rib (4), and a connecting angle steel (5). One side of the steel panel (1) has two rows of vertically oriented variable cross-section adjustment holes (6), and plastic caps (7) are installed inside the variable cross-section adjustment holes (6). The steel plate flange (2) is integral with the steel panel (1) and has several fixed connection holes (8). The connecting angle steel (5) has bolt holes corresponding to the fixed connection holes (8). When the size is large, the two sides of the connecting angle steel (5) are respectively connected to the two adjacent steel plate flanges (2) by bolts. When the size is small, the fixed connection hole (8) of the steel plate flange (2) is connected to the variable cross section adjustment hole (6) by bolts. The opening of the channel steel main reinforcement (3) is set facing the vertical steel plate flange (2). The channel steel main reinforcement (3) is set in several places on the back of the steel panel (1). The channel steel main reinforcement (3) is flush with the steel plate flange (2). The double-row channel steel back ribs (4) are welded to the ends of the channel steel main reinforcement (3) and the steel plate flange (2).

2. The retractable independent column steel formwork according to claim 1, characterized in that: Short channel steel sections (9) are fixedly welded to the outer sides of both ends of the double-row channel steel back rib (4). The short channel steel sections (9) are butt welded to the side plates of the double-row channel steel back rib (4). Reinforcing angle brackets (10) are welded to the outer sides of the two short channel steel sections (9). The reinforcing angle brackets (10) are welded to the two short channel steel sections (9).

3. The retractable independent column steel formwork according to claim 2, characterized in that: One of the double-row channel steel back ribs (4) has a U-shaped lifting ring (11) with its opening facing downward welded to its top.

4. The retractable independent column steel formwork according to claim 3, characterized in that: A guy rope (12) is fixedly connected to the U-shaped lifting ring (11), and the other end of the guy rope (12) is fixed to the ground.

5. A retractable independent column steel formwork according to claim 4, characterized in that: Two of the steel panels (1) have steel plate flanges (2) that are perpendicular to the steel panel (1), and the other two steel panels (1) have steel plate flanges (2) that are obtuse to the steel panel (1). The two steel panels (1) with steel plate flanges (2) that are perpendicular to the steel panel (1) are arranged symmetrically, and the two steel panels (1) with steel plate flanges (2) that are obtuse to the steel panel (1) are arranged symmetrically.

6. The retractable independent column steel formwork according to claim 5, characterized in that: One end of the plastic cap (7) has a T-shaped cap, and the plastic cap (7) is interference-fitted into the variable cross-section adjustment hole (6).

7. A retractable independent column steel formwork according to claim 6, characterized in that: When two adjacent steel plate flanges (2) are connected to angle steel, the space size at the independent column is 1300mm x 1300mm. When the steel plate flange (2) is connected to the first row of variable cross-section adjustment holes (6), the space size at the independent column is 1200mm x 1200mm. When the steel plate flange (2) is connected to the second row of variable cross-section adjustment holes (6), the space size at the independent column is 1100mm x 1100mm.

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