Quickly-assembled fair-faced concrete column formwork

Abstract

The invention relates to the technical field of construction formworks, in particular to a fast-assembly type fair-faced concrete column formwork which mainly solves the technical problems that an existing fair-faced concrete column formwork is time-consuming and labor-consuming to assemble and disassemble and low in assembly precision. The mold plate comprises a bottom mold table, side plate assemblies and mold frame assemblies, each side plate assembly comprises at least two side mold plates, the bottom end of each side mold plate is hinged to the upper surface of the bottom mold table, the number of the mold frame assemblies is one or at least two, the mold frame assemblies are distributed in a stacked mode in the vertical direction, each mold frame assembly comprises two mold half frames, and the mold half frames are arranged in the mold half frames. The two mold half frames are spliced in the horizontal direction and detachably and fixedly connected. The hinged type formwork and the butt-joint type formwork which are adopted by the structure have the fast-assembly characteristic, the convenience of assembly and disassembly can be improved, and therefore the construction efficiency and the construction cost are guaranteed; the splicing precision of the structure is guaranteed by the structural processing precision, and low precision caused by splicing pieces by pieces can be avoided, so that the flatness of the surface of the cast fair-faced concrete can be guaranteed, and the forming quality can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of construction formwork, and particularly to a quick - assembly fair - faced concrete column formwork. Background Art

[0002] The fair - faced concrete column formwork is a commonly used formwork in building construction. Its function is to provide support and a mold for the formation of fair - faced concrete, and it needs to be installed before the fair - faced concrete is poured and removed after the fair - faced concrete is consolidated to the target strength.

[0003] In the prior art, the fair - faced concrete column formwork is generally assembled by splicing piece by piece, and also needs to be removed piece by piece. This method has the following defects: First, the installation and removal of the formwork are time - consuming and labor - intensive, resulting in low construction efficiency and high construction costs; Second, the assembly accuracy of the formwork is low, which easily causes the surface of the poured fair - faced concrete to be uneven and affects the forming quality. Therefore, there is an urgent need for a fair - faced concrete column formwork that is simple, quick to install and remove and has a high assembly accuracy. Summary of the Invention

[0004] In order to overcome the technical defects of the existing fair - faced concrete column formwork, which is time - consuming and labor - intensive in installation and removal and has a low assembly accuracy, the present invention provides a quick - assembly fair - faced concrete column formwork.

[0005] The quick - assembly fair - faced concrete column formwork provided by the present invention includes: A bottom formwork table, whose upper surface is set as a horizontal plane; A side - plate assembly, which includes at least two side formworks. Each side formwork is perpendicular to the upper surface of the bottom formwork table, and the bottom end of each side formwork is hinged to the upper surface of the bottom formwork table through a horizontally arranged hinge shaft. All side formworks and the bottom formwork table enclose the bottom of the pouring cavity; A form - frame assembly, which has one set or at least two sets stacked vertically. Each set of form - frame assemblies includes two half - form frames. The two half - form frames are assembled horizontally and detachably fixed to form a set of form - frame assemblies. The lowermost form - frame assembly is detachably fixed above the side - plate assembly, and adjacent form - frame assemblies are detachably fixed to each other. All form - frame assemblies enclose the middle and top of the pouring cavity.

[0006] Optionally, the pouring cavity is in the shape of a quadrangular prism. There are four side formworks corresponding to the four sides of the quadrangular prism. Each half - form frame is of a U - shaped structure, and the two half - form frames of the same form - frame assembly are assembled with their openings facing each other to enclose a quadrangular prism.

[0007] Optionally, the splicing surface between two adjacent side formworks is a 45 - degree inclined surface.

[0008] Optionally, the side plate assembly further includes inner plates. The inner plates are L-shaped plates and there are four of them. The four L-shaped plates are respectively attached to the four splicing corners formed by the four side templates, and the four L-shaped plates are joined together to form a rectangular shape.

[0009] Optionally, a limiting groove is formed in the inner edge part of the bottom surface of the lowermost mold frame assembly, and the top of the side template is placed in the limiting groove to form a limiting fit.

[0010] Optionally, a horizontally arranged connecting plate is provided on the outer side wall of the top of the side template, and the outer edge part of the bottom surface of the lowermost mold frame assembly and the connecting plate are detachably and fixedly connected by fasteners.

[0011] Optionally, a connecting screw sleeve is fixed on the outer side wall of the mold half-frame, and the two mold half-frames of the same mold frame assembly are detachably and fixedly connected by a lead screw screwed into the connecting screw sleeve.

[0012] Optionally, the quick-assembly fair-faced concrete column formwork further includes a reinforcement assembly. The reinforcement assembly is provided in one-to-one correspondence with the side templates and is connected between the side templates and the bottom mold table. The reinforcement assembly includes two connecting screw rods and a movable screw sleeve. The two connecting screw rods are respectively hinged on the side template and the bottom mold table and are connected by the movable screw sleeve.

[0013] Optionally, the quick-assembly fair-faced concrete column formwork further includes a top mold table. The top mold table is detachably and fixedly installed on the uppermost mold frame assembly. A linear power element is installed above the top mold table. The output end of the linear power element penetrates through the top mold table and is fixedly connected with a pressing plate. The pressing plate is adapted to the cross-section of the casting cavity.

[0014] Optionally, there is a limiting fit between the top mold table and the uppermost mold frame assembly, between adjacent mold frame assemblies, and between the two mold half-frames of the same mold frame assembly.

[0015] The technical solution provided by the present invention has the following advantages compared with the prior art: The quick-assembly fair-faced concrete column formwork provided by the present invention adopts a combined structure of articulated and butt-jointed types. The main part of the casting cavity is formed by the butt-jointed mold frame assembly, which can avoid the insufficient structural strength caused by a single articulated formwork. At the same time, the bottom of the casting cavity is formed by the articulated side plate assembly, which can avoid the inconvenience of demolition caused by external force factors such as friction when a single butt-jointed formwork is directly connected to the bottom mold table. The two cooperate to form a relatively reliable formwork structure. Moreover, the articulated formwork and the butt-jointed formwork adopted by this structure both have the characteristic of quick assembly, which can improve the convenience of installation and demolition, thereby ensuring the construction efficiency and construction cost. The assembly accuracy of this structure is guaranteed by the structural processing accuracy, which can avoid the low accuracy caused by piece-by-piece splicing, thereby ensuring the flatness of the surface of the cast fair-faced concrete, and further ensuring the forming quality. Description of the Drawings

[0016] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments in accordance with the present invention, and are used together with the specification to explain the principles of the present invention.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It shows a schematic structural diagram of a quick-installed fair-faced concrete column formwork in an embodiment of the present invention; Figure 2 It shows a schematic assembly structure diagram of a bottom formwork table and a side plate assembly in an embodiment of the present invention; Figure 3 It shows an exploded view of a reinforcement assembly in an embodiment of the present invention; Figure 4 It shows an exploded view of a formwork frame assembly in an embodiment of the present invention; Figure 5 It shows an exploded view of a top formwork table in an embodiment of the present invention.

[0019] In the figure: 1. Bottom formwork table; 11. Notch; 2. Side plate assembly; 21. Side formwork; 22. Hinge shaft; 23. Joint surface; 24. Inner plate; 25. Connecting plate; 26. Fixed seat; 3. Formwork frame assembly; 31. Half formwork frame; 32. Snap fastener; 33. Connecting screw sleeve; 34. Lead screw; 35. U-shaped groove; 36. U-shaped rib; 37. Linear rib; 38. Strip groove; 4. Reinforcement assembly; 41. Connecting screw rod; 42. Movable screw sleeve; 43. Rotating block; 44. Connecting ear; 5. Top formwork table; 51. Linear power element; 52. Pressure plate; 53. Guide post. Detailed implementation manners

[0020] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] It should be noted that, unless otherwise clearly stipulated and defined, the terms "installation", "connection", and "linkage" 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] Many specific details are set forth in the following description in order to provide a thorough understanding of the present invention, but the present invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The following combines Figures 1 to 5 to detail the specific embodiments of the present invention.

[0024] This embodiment provides a quick-installing fair-faced concrete column formwork, which includes a bottom formwork table 1, a side plate assembly 2, and a formwork frame assembly 3.

[0025] Among them, the upper surface of the bottom formwork table 1 is set as a horizontal plane.

[0026] Specifically, the bottom formwork table 1 of this embodiment has a flat plate structure. In other embodiments, the bottom formwork table 1 can also be a cuboid block, a special-shaped block, or other shapes, as long as the upper surface can be ensured to be a horizontal plane.

[0027] Among them, the side plate assembly 2 includes at least two side formworks 21. Each side formwork 21 is perpendicular to the upper surface of the bottom formwork table 1, and the bottom end of each side formwork 21 is hinged to the upper surface of the bottom formwork table 1 through a horizontally arranged hinge shaft 22. All the side formworks 21 and the bottom formwork table 1 enclose the bottom of the casting cavity.

[0028] It is easy to understand that the number and shape of the side formworks 21 can be determined adaptively according to the shape of the casting cavity: when the casting cavity is prismatic, the side formworks 21 are set as flat plates and are arranged one by one corresponding to the sides of the prism; when the casting cavity is cylindrical, the side formworks 21 are set as arc-shaped plates and at least two are provided and evenly distributed along the circumference of the cylinder. For example, in this embodiment, the casting cavity is quadrangular prismatic, and four side formworks 21 are provided and arranged corresponding to the four sides of the quadrangular prism.

[0029] It should be noted that the so-called side formwork 21 being perpendicular to the bottom formwork table 1 means that: when the side formwork 21 is a flat plate, the plate surface of the side formwork 21 is perpendicular to the bottom formwork table 1; when the side formwork 21 is an arc-shaped plate, the axis of the side formwork 21 is perpendicular to the bottom formwork table 1.

[0030] Specifically, in this embodiment, the splicing surface 23 between two adjacent side templates 21 is a 45-degree inclined surface, which ensures that the side templates 21 can be quickly positioned during installation, forming a stable pouring cavity, reducing the time for adjustment and fixation, and further improving the installation efficiency. At the same time, compared with vertical splicing, the 45-degree inclined surface splicing helps to reduce the residue of fair-faced concrete in the mold, ensuring that the surface of the formed fair-faced concrete column is smoother and more even.

[0031] Furthermore, the side plate assembly 2 of this embodiment further includes inner plates 24. The inner plates 24 are L-shaped plates and there are four of them. The four L-shaped plates are respectively attached to the four splicing corners formed by the four side templates 21, and the four L-shaped plates are connected to form a rectangular shape. The inner plates 24 can effectively enhance the structural strength and stability of the formwork, prevent the deformation of the mold during the pouring process, and at the same time can also reduce the stress concentration of fair-faced concrete, improving the quality of fair-faced concrete columns.

[0032] Among them, there is one set of mold frame assemblies 3 or at least two sets stacked vertically. Each set of mold frame assemblies 3 includes two half mold frames 31. The two half mold frames 31 are spliced horizontally and detachably fixed to form a set of mold frame assemblies 3. The lowermost mold frame assembly 3 is detachably fixed above the side plate assembly 2, and adjacent mold frame assemblies 3 are detachably fixed to each other. All the mold frame assemblies 3 enclose the middle and top of the pouring cavity.

[0033] It is easy to understand that the number of mold frame assemblies 3 can be determined adaptively according to the height of a single mold frame assembly 3 and the height of the pouring cavity. For example Figure 1 as shown in this embodiment, there are two sets of mold frame assemblies 3.

[0034] Specifically, the half mold frame 31 of this embodiment is of a U-shaped structure, and the two half mold frames 31 of the same mold frame assembly 3 are spliced with their openings facing each other to enclose a quadrangular prism. In other embodiments, for a regular hexagonal column-shaped pouring cavity, the half mold frame 31 should be designed as an isosceles trapezoidal structure; for a cylindrical pouring cavity, the half mold frame 31 should be designed as a semi-circular structure, that is: the shape of the half mold frame 31 can be determined according to the shape of the pouring cavity, and the half mold frame 31 should be designed as half of the cross-section of the pouring cavity. Specifically, if the cross-section of the pouring cavity is not a regular polygon, the shapes of the two half mold frames 31 can be designed differently.

[0035] Specifically, a limiting groove is opened at the inner edge of the bottom surface of the lowermost mold frame assembly 3 of this embodiment, and the top of the side template 21 is placed in the limiting groove to form a limiting fit. The limiting groove has two functions: First, the cooperation between the limiting groove and the top of the side template 21 can ensure the precise positioning of the mold frame assembly 3 and the side plate assembly 2, thereby improving the assembly efficiency and assembly accuracy of the formwork; Second, since the limiting groove is opened at the inner edge of the bottom surface of the lowermost mold frame assembly 3, the limiting groove has a tightening effect on the side template 21, further improving the structural strength of the formwork.

[0036] More specifically, in this embodiment, a horizontally arranged connecting plate 25 is provided on the outer side wall of the top of the side formwork 21, and the outer edge part of the bottom surface of the lowermost formwork assembly 3 is detachably and fixedly connected to the connecting plate 25 through fasteners. The connecting plate 25 is a connection structure between the formwork assembly 3 and the side plate assembly 2 designed based on the structure of the aforementioned limiting groove, and the connection operation is more convenient and the connection reliability is strong.

[0037] It is easy to understand that the so-called "top" refers to the area near the top end, the so-called "inner edge part" refers to the area near the inner edge, and the so-called "outer edge part" refers to the area near the outer edge.

[0038] Specifically, in this embodiment, a connecting screw sleeve 33 is fixed on the outer side wall of the half formwork 31, and the two half formworks 31 of the same formwork assembly 3 are detachably and fixedly connected by a lead screw 34 screwed into the connecting screw sleeve 33. During installation, first horizontally butt the two half formworks 31 in place, and then pass the lead screw 34 through the connecting screw sleeves 33 of the two half formworks 31 in sequence to achieve the connection, and the operation is more convenient.

[0039] More specifically, since the half formwork 31 of this embodiment is of a U-shaped structure, in order to ensure the firmness of the connection, connecting screw sleeves 33 are provided on both wings of the U-shaped structure, that is, the two half formworks 31 of the same formwork assembly 3 are detachably and fixedly connected through the cooperation of two groups of connecting screw sleeves 33 and the lead screw 34.

[0040] Specifically, in this embodiment, adjacent formwork assemblies 3 are connected by buckles 32, and the operation is more convenient.

[0041] In addition, the quick-installing fair-faced concrete column formwork of this embodiment is also provided with a reinforcement assembly 4. The reinforcement assembly 4 is arranged corresponding to the side formwork 21 one by one and is connected between the side formwork 21 and the bottom formwork table 1. The reinforcement assembly 4 includes two connecting screws 41 and a movable screw sleeve 42. The two connecting screws 41 are respectively hinged on the side formwork 21 and the bottom formwork table 1 and are connected by the movable screw sleeve 42. The reinforcement assembly 4 can support the side formwork 21 to ensure the stability and firmness of the side formwork 21 during the pouring process of fair-faced concrete and reduce the risk of displacement of the side formwork 21; and by screwing the movable screw sleeve 42, the total length of the reinforcement assembly 4 can be adjusted, so that the fine adjustment of the angle of the side formwork 21 can be realized.

[0042] Specifically, among the two connecting screws 41, a rotating block 43 is fixed at the end of one connecting screw 41 that is not connected to the movable screw sleeve 42, and an ear 44 is fixed at the end of the other connecting screw 41 that is not connected to the movable screw sleeve 42. A notch 11 for installing the rotating block 43 is opened on the bottom formwork table 1, and a fixing seat 26 for installing the ear 44 is provided on the outer side wall of the side formwork 21.

[0043] In addition, the quick - assembled fair - faced concrete column formwork of this embodiment is also provided with a top formwork platform 5. The top formwork platform 5 is detachably fixed on the uppermost formwork frame assembly 3. Above the top formwork platform 5, a linear power element 51 is installed. The output end of the linear power element 51 penetrates through the top formwork platform 5 and is fixedly connected with a pressing plate 52. The pressing plate 52 is adapted to the cross - section of the pouring cavity. During the pouring and curing of fair - faced concrete, the linear power element 51 can drive the pressing plate 52 to descend to apply appropriate pressure to the fair - faced concrete, so as to ensure the density and surface flatness of the fair - faced concrete column.

[0044] Specifically, the linear power element 51 of this embodiment is selected as a cylinder; the pressing plate 52 is connected with a guiding column 53. The guiding column 53 is slidably inserted into the top formwork platform 5 to ensure the stability and uniformity when the pressing plate 52 applies pressure, so that the pressing plate 52 can lift and lower smoothly, and avoid unevenness on the surface of fair - faced concrete or structural defects caused by uneven force.

[0045] Specifically, in this embodiment, the top formwork platform 5 and the uppermost formwork frame assembly 3 are connected by a buckle 32, which is more convenient to operate.

[0046] Specifically, in this embodiment, there are limit fits between the top formwork platform 5 and the uppermost formwork frame assembly 3, between adjacent formwork frame assemblies 3, and between the two formwork half - frames 31 of the same formwork frame assembly 3. The limit fit can improve the assembly efficiency of the formwork and also ensure the assembly accuracy of the formwork.

[0047] It should be noted that when the formwork is removed, the removal direction of the formwork half - frame 31 is horizontally outwards. Therefore, the limit fit should be able to avoid the removal direction of the formwork half - frame 31. For example, in this application, a U - shaped rib 36 is provided at the inner edge of the top surface of the formwork half - frame 31, and a U - shaped groove 35 is provided at the inner edge of the bottom surface of the formwork half - frame 31. The U - shaped rib 36 is placed in the U - shaped groove 35 to achieve the limit fit between adjacent formwork frame assemblies 3; the U - shaped groove 35 of the formwork half - frame 31 of the lowermost formwork frame assembly 3 serves as the limit groove to cooperate with the side formwork 21, and a U - shaped groove 35 is provided at the inner edge of the bottom surface of the top formwork platform 5 to cooperate with the U - shaped rib 36 of the formwork half - frame 31 of the uppermost formwork frame assembly 3; the two formwork half - frames 31 of the same formwork frame assembly 3 are cooperated by a linear rib 37 and a strip - shaped groove 38. In addition, the cooperation of the U - shaped rib 36 and the U - shaped groove 35 and the cooperation of the linear rib 37 and the strip - shaped groove 38 adopted in this embodiment can play a certain sealing role on the basis of the limit function, reducing the risk of fair - faced concrete leakage.

[0048] The using method of the quick - assembled fair - faced concrete column formwork of this embodiment is as follows: S1: Place the bottom formwork platform 1 at a predetermined position on the construction site, and adjust the angle of the side formwork 21 by screwing the movable screw sleeve 42 of the reinforcement assembly 4 until the adjacent side formworks 21 are in contact with each other at a 45-degree angle, and all the side formworks 21 and the bottom formwork platform 1 form the bottom of the casting cavity; S2: Place the two mold half frames 31 of the lower mold frame assembly 3 above the side plate assembly 2, and align the limiting grooves on the bottom surfaces of the mold half frames 31 with the top of the side plate 21, and simultaneously make the two mold half frames 31 limit and match, and then fix the two mold half frames 31 by the cooperation of the screw rod 34 and the connecting screw sleeve 33, and finally fix the lowermost mold frame assembly 3 on the connecting plate 25 by fasteners; S3: placing the upper mold frame assembly 3 above the lower mold frame assembly 3, and making the upper and lower sets of mold frame assemblies 3 limited and matched, and at the same time making the two mold half frames 31 of the upper mold frame assembly 3 limited and matched, and then fixing the two mold half frames 31 of the upper mold frame assembly 3, and finally fixing the upper mold frame assembly 3 above the lower mold frame assembly 3 by buckles, and the upper and lower sets of mold frame assemblies 3 together form the middle and top of the casting cavity, so far, the casting cavity is formed; S4. Pour the plain concrete into the pouring cavity, and vibrate the plain concrete with a vibrator or manual method to ensure the density of the plain concrete until it is poured to the target height; S5. Place the top mold platform 5 above the upper mold frame assembly 3, and make the top mold platform 5 and the upper mold frame assembly 3 limit fit and fixed by buckles, then turn on the cylinder to drive the pressure plate 52 down, and apply appropriate pressure to the poured plain concrete through the pressure plate 52 to ensure the density and flatness of the concrete; S6. After the initial curing of the plain concrete, the top formwork 5, the frame assembly 3 and the side panel assembly 2 are removed in sequence; the top formwork 5 is removed by lifting it upward; the frame assembly 3 is removed by separating the two half-frames 31 in the horizontal direction; the side panel assembly 2 is firstly removed by shortening the length of the reinforcement assembly 4 so that the side template 21 is rotated toward the bottom formwork 1, and then the inner panel 24 is removed; S7. Remove the formed concrete column from the bottom formwork platform 1, clean the formwork, and prepare for the next use.

[0049] The above is only a specific implementation of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A quick-installed plain concrete column formwork, characterized in that: include: A bottom mold platform (1), the upper surface of which is set as a horizontal plane; A side plate assembly (2), comprising at least two side molds (21), each side mold (21) being perpendicular to the upper surface of the bottom mold platform (1), and the bottom end of each side mold (21) being hinged to the upper surface of the bottom mold platform (1) via a horizontally arranged hinge shaft (22), and all the side molds (21) and the bottom mold platform (1) enclose the bottom of the casting cavity; A mold frame assembly (3) is provided with one set or at least two sets stacked and distributed in a vertical direction, each set of mold frame assemblies (3) comprises two mold half frames (31), the two mold half frames (31) are joined together in a horizontal direction and are detachably fixedly connected to form a set of mold frame assemblies (3), the bottom mold frame assembly (3) is detachably fixed above the side plate assembly (2), adjacent mold frame assemblies (3) are detachably fixedly connected, and all mold frame assemblies (3) surround the middle and top of the casting cavity.

2. The quick-installed plain concrete column formwork according to claim 1 is characterized in that: The casting cavity is in the shape of a quadrangular prism, the side templates (21) are provided with four and are arranged corresponding to the four side surfaces of the quadrangular prism, each mold half frame (31) is a U-shaped structure, and the two mold half frames (31) of the same mold frame assembly (3) are assembled in a posture with their openings facing each other to form a quadrangular prism.

3. The quick-installed plain concrete column formwork according to claim 2 is characterized in that: The joint surface (23) of two adjacent side templates (21) is a 45-degree inclined surface.

4. The quick-installed plain concrete column formwork according to claim 3 is characterized in that: The side panel assembly (2) further comprises an inner panel (24), wherein the inner panel (24) is an L-shaped panel and is provided in four pieces. The four L-shaped panels are respectively attached to four joint corners formed by the four side templates (21), and the four L-shaped panels are connected to form a rectangular shape.

5. The quick-installed plain concrete column formwork according to claim 1 is characterized in that: A limiting groove is provided on the inner edge of the bottom surface of the lowermost mold frame assembly (3), and the top of the side mold plate (21) is placed in the limiting groove to form a limiting fit.

6. The quick-installed plain concrete column formwork according to claim 4 is characterized in that: A horizontally arranged connecting plate (25) is provided on the top outer side wall of the side mold plate (21), and the outer edge of the bottom surface of the bottommost mold frame assembly (3) is detachably fixedly connected to the connecting plate (25) via fasteners.

7. The quick-installed plain concrete column formwork according to claim 1 is characterized in that: A connecting screw sleeve (33) is fixed on the outer side wall of the mold half frame (31), and the two mold half frames (31) of the same mold frame assembly (3) are detachably fixedly connected by a screw rod (34) screwed into the connecting screw sleeve (33).

8. The quick-installed plain concrete column formwork according to any one of claims 1 to 7, characterized in that: It also includes a reinforcement component (4), the reinforcement component (4) being arranged in one-to-one correspondence with the side mold (21) and connected between the side mold (21) and the bottom mold platform (1), the reinforcement component (4) comprising two connecting screws (41) and a movable screw sleeve (42), the two connecting screws (41) being respectively hinged on the side mold (21) and the bottom mold platform (1) and connected via the movable screw sleeve (42).

9. The quick-installed plain concrete column formwork according to any one of claims 1 to 7, characterized in that: It also comprises a top mold platform (5), the top mold platform (5) is detachably fixed on the top mold frame assembly (3), a linear power element (51) is installed above the top mold platform (5), the output end of the linear power element (51) passes through the top mold platform (5) and is fixedly connected to a pressure plate (52), and the pressure plate (52) is adapted to the cross-section of the casting cavity.

10. The quick-installed plain concrete column formwork according to claim 9, characterized in that: The top mold platform (5) and the topmost mold frame assembly (3), adjacent mold frame assemblies (3), and two mold half frames (31) of the same mold frame assembly (3) are all limitedly matched.

Images