Column formwork device with variable section

Abstract

According to the section shape and size of a column to be poured, the section shape of the column to be poured is defined by taking a plurality of strip-shaped positioning pin plates as edges, the size of the section is adjusted, and a plurality of templates are respectively installed and positioned along the strip-shaped positioning pin plates on all the edges of the section to jointly define a pouring cavity. Pouring of columns with different section shapes and sizes is achieved through cooperation of the strip-shaped positioning pin plates and the formworks, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, specifically to a column formwork device with variable cross-section. Background Technology

[0002] Concrete columns play a crucial role in building structures and are widely used in industrial and civil buildings. Given the varying loads borne by different locations within a building structure, concrete columns with different cross-sectional shapes and sizes, such as square, triangular, and hexagonal prisms, are required to meet support and load-bearing needs. Typically, concrete columns are constructed by erecting formwork and then pouring concrete. Traditional formwork design methods involve customizing multiple formwork panels based on the shape and dimensions of the column cross-section, assembling them to ensure a regular column shape after concrete pouring.

[0003] However, traditional formwork design methods have many problems. Formwork assemblies are strictly customized and assembled according to the specific column cross-sectional shape and dimensions, resulting in a single specification of formwork being only suitable for concrete columns of a specific shape and size. When constructing columns of different shapes and sizes, new formwork must be designed and manufactured. Each time formwork is redesigned and manufactured, construction workers spend a significant amount of time measuring, designing, and fabricating the new formwork. Furthermore, during on-site assembly, the relative positions of the multiple formwork panels constituting the assembly need to be adjusted multiple times during hoisting, making the operation extremely inconvenient.

[0004] In summary, existing formwork devices have poor versatility and low utilization rates. In addition, the inconvenience of adjusting and positioning during assembly increases project costs and reduces construction efficiency. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes a column formwork device with a variable cross-section. Based on the cross-sectional shape and size of the column to be poured, multiple strip-shaped positioning pins are used to form the cross-sectional shape of the column, and the cross-sectional size is adjusted. Multiple formwork panels are installed and positioned along the strip-shaped positioning pins on each side of the cross-section, collectively forming the pouring cavity. Through the cooperation of several strip-shaped positioning pins and formwork, the pouring of columns with different cross-sectional shapes and sizes can be achieved, improving construction efficiency and reducing project costs.

[0006] A column formwork device with variable cross-section is characterized by comprising multiple formwork panels and multiple strip-shaped positioning pin plates; each strip-shaped positioning pin plate includes a long side and a short side that are perpendicular to each other, and a number of positioning pins are arranged at equal intervals along the long side on its upper surface; each formwork panel has a pin hole corresponding to the positioning pin at its bottom end; the multiple strip-shaped positioning pin plates are laid on the ground, forming the cross-sectional shape of the column to be poured with the strip-shaped positioning pin plates as edges; each strip-shaped positioning pin plate moves closer to or further away from the center of the cross-section on the ground to adjust the size of the cross-section; after adjustment, each strip-shaped positioning pin plate is temporarily fixed to the ground; the multiple formwork panels are hoisted and placed along the strip-shaped positioning pin plates on each side of the adjusted cross-section, and are positioned by the pin holes and positioning pins, together forming the pouring cavity.

[0007] Preferably, depending on the cross-sectional shape of the column to be poured, multiple strip positioning pins together form one of a triangular cross-section, a rectangular cross-section, or a hexagonal cross-section.

[0008] Preferably, the template is rectangular, and the templates installed on adjacent sides of the cross section abut against each other to form a closed casting cavity.

[0009] Preferably, when the column to be poured is a square column, multiple strip positioning pin plates together form a rectangular cross section, and positioning pins are distributed at equal intervals on each side of the rectangular cross section; for any side of the rectangular cross section, the line connecting the axes of multiple positioning pins thereon passes through the axis of a positioning pin on its adjacent vertical side.

[0010] Preferably, the templates on adjacent vertical sides of the rectangular cross-section are perpendicularly joined; each template is supported by diagonal bracing on its outer side.

[0011] Preferably, it also includes a locking device, which is disposed on the upper end face of the adjacent template to lock the adjacent templates together.

[0012] Preferably, the locking device includes a fastener and a locking pin. The locking pin is disposed on the upper end face of each template and is coaxially disposed with the pin hole at the bottom end of the template. The fastener connects to the locking pin on the adjacent template to lock the adjacent template.

[0013] Preferably, the fastener is a steel wire, which is wound around the locking pin on the upper end face of the adjacent template.

[0014] Preferably, the fastener is a locking plate with several locking holes, which are respectively inserted into the locking pins on the adjacent template.

[0015] Preferably, the locking plate is in the shape of a straight line or an L.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. When using this utility model, strip positioning pins can be arranged on the ground according to the required cross-sectional shape and size of the column to be cast, and the cross-sectional size can be adjusted. For example, if the column to be cast is a square column, a rectangle is formed on the ground using strip positioning pins; if the column to be cast is a triangular prism, a triangle is formed on the ground using strip positioning pins. The strip positioning pins are then temporarily fixed to the ground, and then the formwork is hoisted and installed to form the casting cavity, and the column is cast into the cavity. After casting, the formwork and strip positioning pins can be removed, cleaned, and reused. By splicing and combining basic components such as strip positioning pins and formwork, it can adapt to the casting of columns with various cross-sectional shapes and sizes. The formwork device has a simple structure, high reusability, strong adaptability, avoids material waste, and reduces project costs.

[0018] 2. The relative positions of the formwork panels forming the casting cavity are determined by strip positioning pins on the ground, avoiding multiple position adjustments during the formwork hoisting process, and ensuring accurate and convenient installation and positioning.

[0019] 3. Due to the evenly spaced positioning pins on the strip positioning pin plate, construction personnel can quickly determine the area of ​​the cross section based on the number of positioning pins distributed on each side of the cross section, making installation and adjustment quick and effectively improving construction efficiency.

[0020] 4. After the formwork is installed and the casting cavity is formed, fasteners are used to connect and lock adjacent formwork sections to improve the connection stability of the formwork device and prevent the adjacent formwork sections from easily separating. The locking pin, combined with steel wire or locking plate, provides quick installation and removal, and is applicable to connecting and fixing adjacent formwork sections with different cross-sectional shapes, thus improving the construction efficiency of formwork erection. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of a column formwork device with a variable cross-section.

[0022] Figure 2 This is a second-view structural diagram of a column formwork device with a variable cross-section.

[0023] Figure 3 A top view of the cross-section formed by the strip positioning pins when casting a square column.

[0024] Figure 4 A top view of the cross-section formed by the strip positioning pins when casting a triangular prism.

[0025] In the diagram: 1-template, 2-strip positioning pin plate, 21-positioning pin, 11-pin hole, 12-locking pin, 3-locking plate, 31-locking hole. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figure 1-2 As shown, a column formwork device with a variable cross-section is characterized by comprising multiple formwork panels 1 and multiple strip-shaped positioning pin plates 2. Each strip-shaped positioning pin plate 2 includes a long side and a short side that are perpendicular to each other, and a plurality of positioning pins 21 are arranged at equal intervals along the long side on its upper surface. Each formwork panel 1 has a pin hole 11 corresponding to the positioning pin 21 at its bottom end. Figure 3-4 As shown, multiple strip-shaped positioning pins 2 are arranged on the ground, forming the cross-sectional shape of the column to be poured, with the strip-shaped positioning pins 2 as the edges. Each strip-shaped positioning pin 2 moves closer to or further away from the center of the cross-section on the ground to adjust the size of the cross-section. After adjustment, each strip-shaped positioning pin 2 is temporarily fixed to the ground. Multiple templates 1 are hoisted and placed along the strip-shaped positioning pins 2 on each side of the adjusted cross-section, and are positioned by the engagement of the pin holes 11 and positioning pins 21, together forming the pouring cavity.

[0028] Depending on the cross-sectional shape of the column to be poured, multiple strip positioning pins 2 together form one of the following cross-sections: triangular, rectangular, or hexagonal. Figure 3-4 The figures show rectangular and triangular cross-sections formed by multiple strip positioning pin plates 2. Depending on the casting requirements of different cross-sectional shapes and sizes, strip positioning pin plates of different lengths and with different pin spacings, along with matching templates, can be selected for construction.

[0029] like Figure 1-2 As shown, template 3 is rectangular, and templates 1 installed on adjacent sides of the cross-section abut against each other to form a closed casting cavity. After casting, the surfaces of the resulting column are polished to ensure surface flatness.

[0030] The spacing between the pin holes 11 at the bottom of template 1 is equal to the spacing between the positioning pins 21 on the strip positioning pin plate 2.

[0031] In use, this invention allows for the arrangement of strip positioning pins 2 on the ground according to the required cross-sectional shape and size of the column to be cast. The cross-sectional size can be adjusted; for example, if the column to be cast is square, the strip positioning pins 2 form a rectangle on the ground; if the column is triangular, they form a triangle. The strip positioning pins 2 are then temporarily fixed to the ground, and the template 1 is hoisted and installed to form the casting cavity, where the column is then cast. After casting, the template 1 and strip positioning pins 2 can be removed, cleaned, and reused. By assembling and combining the strip positioning pins 2, template 1, and other basic components, the invention can accommodate the casting of columns with various cross-sectional shapes and sizes. The template device has a simple structure, high reusability, strong adaptability, avoids material waste, and reduces project costs.

[0032] The relative positions of the templates 1 that form the casting cavity are determined by the strip positioning pins 2 on the ground, which avoids multiple position adjustments during the hoisting process of the templates 1, and makes the installation and positioning accurate and convenient.

[0033] Meanwhile, due to the equally spaced positioning pins 21 on the strip positioning pin plate 2, construction personnel can quickly determine the area of ​​the cross section based on the number of positioning pins 21 distributed on each side of the cross section, making installation and adjustment quick and effectively improving construction efficiency.

[0034] like Figure 1-3 As shown, when the column to be poured is a square column, multiple strip positioning pin plates 2 together form a rectangular cross section, and positioning pins 21 are distributed at equal intervals on each side of the rectangular cross section. For any side of the rectangular cross section, the line connecting the axes of multiple positioning pins 21 on it passes through the axis of a positioning pin 21 on its adjacent vertical side, and the template 1 on the adjacent vertical side of the rectangular cross section abuts vertically.

[0035] Each template 1 is supported by diagonal bracing (not shown in the figure) on its outer side to improve the stability of the vertical formwork.

[0036] The variable cross-section column formwork device also includes a locking device, which is set on the upper end face of the adjacent formwork 1 to lock the adjacent formwork 1 together, thereby improving the connection stability between the adjacent formwork 1.

[0037] The locking device includes a fastener and a locking pin 12. The locking pin 12 is disposed on the upper end face of each template 1 and is coaxially disposed with the pin hole 11 at the bottom end of the template 1. The fastener connects to the locking pin 12 on adjacent templates 1 to lock the adjacent templates 1.

[0038] In one embodiment, the fastener is a steel wire, which is wound around the locking pin 12 on the upper end face of the adjacent template 1.

[0039] In other embodiments, the fastener may also be a locking plate 3, which has several locking holes 31. The locking holes 31 on the locking plate 3 are respectively inserted into the locking pins 12 on the adjacent template 1. The locking plate 3 is straight or L-shaped, and the locking holes 31 on the locking plate 3 can be opened on-site according to the center distance of the locking pins 12 on the adjacent template 1 after installation.

[0040] After each template 1 is installed by inserting and connecting it with the positioning pin 21, diagonal bracing is installed on its outer side. After the template 1 is installed and forms the casting cavity, fasteners are used to lock adjacent template 1 to improve the connection stability of the template device and prevent adjacent template 1 from easily separating at the joint. The locking pin 12, together with steel wire or locking plate 3, allows for quick installation and removal and can be applied to the connection and fixing of adjacent template 3 in different cross-sectional shapes, improving the construction efficiency of template 1 erection.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A post form device with variable cross section, characterized by, It includes multiple templates and multiple strip positioning pins; each strip positioning pin has a long side and a short side that are perpendicular to each other, and several positioning pins are evenly spaced along the long side on its upper surface; each template has a pin hole at the bottom corresponding to the positioning pin; multiple strip positioning pins are laid on the ground, forming the cross-sectional shape of the column to be poured with the strip positioning pins as the edges; each strip positioning pin moves closer to or further away from the center of the cross-section on the ground to adjust the size of the cross-section; after adjustment, each strip positioning pin is temporarily fixed to the ground; multiple templates are hoisted and placed along the strip positioning pins on each side of the adjusted cross-section, and are positioned by the pin holes and positioning pins, together forming the pouring cavity.

2. A variable column formwork apparatus according to claim 1, wherein, Depending on the cross-sectional shape of the column to be poured, multiple strip positioning pins together form one of the following cross-sections: triangular, rectangular, or hexagonal.

3. A variable column formwork apparatus according to claim 2, wherein, The template is rectangular, and the templates installed on adjacent sides of the cross section abut against each other to form a closed casting cavity.

4. A variable column formwork apparatus according to claim 3, wherein, When the column to be poured is a square column, multiple strip positioning pin plates together form a rectangular cross section, and positioning pins are distributed at equal intervals on each side of the rectangular cross section; for any side of the rectangular cross section, the line connecting the axes of multiple positioning pins on it passes through the axis of a positioning pin on its adjacent vertical side.

5. A variable column formwork apparatus according to claim 4, wherein, The templates on adjacent vertical sides of the rectangular cross section are perpendicularly joined; each template is supported by diagonal bracing on its outer side.

6. A variable column formwork apparatus according to claim 5, wherein, It also includes a locking device, which is installed on the upper surface of adjacent templates to lock the adjacent templates together.

7. A variable column formwork apparatus according to claim 6, wherein, The locking device includes fasteners and locking pins. The locking pins are located on the upper surface of each template and are coaxially arranged with the pin holes at the bottom of the template. The fasteners connect to the locking pins on adjacent templates to lock the adjacent templates.

8. A variable column formwork apparatus according to claim 7, wherein, The fastener is a steel wire, which is wrapped around the locking pin on the upper surface of the adjacent template.

9. A variable column formwork apparatus according to claim 7, wherein, The fastener is a locking plate with several locking holes, which are inserted into the locking pins on the adjacent templates.

10. A variable column formwork apparatus according to claim 9, wherein, The locking plate is either straight or L-shaped.

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