Curved-surface fair-faced concrete formwork and mounting method

Abstract

The invention relates to the technical field of concrete formworks, and discloses a curved-surface bare concrete formwork and a mounting method.The curved-surface bare concrete formwork comprises two bases, and an arc-shaped groove is formed in the upper surface of each base; the template assembly comprises two vertical arc-shaped templates, an arc-shaped limiting part is formed at the bottom of each vertical arc-shaped template, and the two vertical arc-shaped templates are correspondingly inserted into the two arc-shaped grooves through the arc-shaped limiting parts respectively; a sealing seat and a sealing groove are formed at the two ends of each vertical arc-shaped template respectively, and the two vertical arc-shaped templates are embedded in a one-to-one correspondence mode through the sealing seats and the sealing grooves respectively to form an outer layer sealing structure; limiting grooves are formed in the two ends of each vertical arc-shaped formwork respectively, the two limiting grooves are in butt joint and communicated with each other to form an inserting groove, and the inserting groove is located in the inner side of the sealing base. The two elastic sealing pieces are respectively inserted into the two inserting grooves to form an inner-layer sealing structure; double-layer sealing is adopted to form redundant protection, grout can be effectively blocked, and the defects of pitted surfaces, sand holes and the like caused by grout leakage are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly to a curved fair-faced concrete formwork and an installation method thereof, which are applicable to the concrete pouring and molding of curved columnar structures. Background Art

[0002] A curved fair-faced concrete formwork is a formwork used for pouring fair-faced concrete, and its surface has a curved design, which can meet the requirements of complex building shapes. This formwork has important applications in the construction field, especially in projects that need to display the natural texture and texture of concrete.

[0003] In related technologies, the surface of the curved fair-faced concrete formwork is designed as a curved surface, which is mainly used in columnar buildings. When fixing the formwork, there are certain differences from the fixing of straight-edge concrete formworks. At present, the installation method of the traditional single-layer sealing structure is to lock it with a bolt and nut group after closing the formwork, and then pour concrete into the formwork. The traditional single-layer sealing structure is prone to gaps due to construction vibration or concrete side pressure, resulting in defects such as leakage of mortar, pitted surface, and sand holes. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the purpose of the present invention is to provide a curved fair-faced concrete formwork and an installation method thereof. The present invention adopts a double-layer seal to form redundant protection. Even if the outer layer seal has a small gap due to vibration or pressure, the elastic seal absorbs vibration energy through deformation, preventing the loosening of the seal structure, effectively blocking the slurry, and avoiding defects such as pitted surface and sand holes caused by leakage of mortar.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] The first aspect of the present invention provides a curved fair-faced concrete formwork, including:

[0007] Two symmetrically arranged bases, and each upper surface of the base is provided with an arc-shaped groove;

[0008] A formwork assembly, the formwork assembly includes two vertical arc-shaped formworks, and each bottom of the vertical arc-shaped formwork extends downward to form an arc-shaped limiting part. The two vertical arc-shaped formworks are respectively inserted into the two arc-shaped grooves through the arc-shaped limiting parts, so that a curved columnar pouring cavity is jointly defined between the inner walls of the two vertical arc-shaped formworks; each end of each vertical arc-shaped formwork is respectively formed with a sealing seat and a sealing groove, and the two vertical arc-shaped formworks are respectively mutually engaged through the sealing seat and the sealing groove to form an outer layer sealing structure; each end of each vertical arc-shaped formwork is respectively formed with a limiting groove, and the limiting grooves at both ends of the two vertical arc-shaped formworks are mutually butted and communicated to form a plugging groove, and the plugging groove is located inside the sealing seat;

[0009] Two elastic seals, and the two elastic seals are respectively inserted into the two insertion grooves to form an inner sealing structure.

[0010] In the first aspect of the present invention, as an alternative embodiment, the limiting groove includes a limiting hole and a communication hole that communicate with each other from inside to outside; the radius of the limiting hole is greater than the radius of the communication hole;

[0011] The elastic seal includes an arc-shaped sealing portion, a connecting portion and a limiting portion that sequentially extend outward from both ends of the arc-shaped sealing portion; the shape and size of the limiting portion match the limiting hole, the shape and size of the connecting portion match the communication hole, the limiting portion and the connecting portion are respectively inserted into the limiting hole and the communication hole, and the outer side surface of the arc-shaped sealing portion is closely attached to the inner side surface of the sealing seat.

[0012] In the first aspect of the present invention, as an alternative embodiment, the elastic seal is made of ethylene propylene diene monomer rubber, and a silicone oil or polytetrafluoroethylene coating is coated on the surface of the elastic seal.

[0013] In the first aspect of the present invention, as an alternative embodiment, it further includes a connecting structure, and the connecting structure includes connecting seats provided at both ends of the vertical arc-shaped template and a bolt-nut assembly; through holes are provided on the connecting seats; after the connecting seats on the two opposite vertical arc-shaped templates are abutted, the bolt-nut assembly passes through the through holes and is screwed.

[0014] In the first aspect of the present invention, as an alternative embodiment, the tops of the two vertical arc-shaped templates are further connected by a pulling assembly to realize fine adjustment of the template spacing and mold closing traction.

[0015] In the first aspect of the present invention, as an alternative embodiment, the pulling assembly includes two symmetrically arranged stretching rods. One end of each of the two stretching rods away from each other is hingedly installed on the top wall of the corresponding vertical arc-shaped template. Positioning grooves are provided on one side of the two stretching rods adjacent to each other, and the two positioning grooves are symmetrically arranged up and down. One side of the outer walls of the two stretching rods corresponding to the positioning grooves are in contact with each other; a number of installation openings are evenly provided on the outer walls of the two stretching rods corresponding to the positioning grooves. Positioning pins are slidably installed on the inner walls of a number of overlapping installation openings on the outer walls of the two stretching rods. A connecting plate is installed on the top walls of a number of the positioning pins, and a handle is installed on the top wall of the connecting plate; the outer walls of a number of the positioning pins are sleeved with a same anti-detachment seat, and clamping plates are hingedly installed on the front and rear walls of the anti-detachment seat. One side of the adjacent top walls of the two clamping plates is provided with clamping seats, and the two clamping seats are clamped and installed on the top wall of the connecting plate.

[0016] In the first aspect of the present invention, as an alternative embodiment, it further includes an abutting component; the abutting component includes two support seats, the two support seats are arranged symmetrically left and right, and one side of each of the two adjacent support seats is connected to the outer wall of the corresponding base. Grooves are provided on the top walls of the two support seats, and sliding rods are installed on the inner walls of the two grooves; sliding seats are slidably installed on the outer walls of the two sliding rods, positioning blocks are installed on the top walls of the two sliding seats, and a number of screw grooves are evenly provided at the front and rear parts of the top walls of the two support seats. Fastening bolts are screwed and installed on the top walls of the number of positioning blocks, and the bottom ends of the number of fastening bolts are screwed and installed on the inner walls of the corresponding screw grooves; abutting columns are screwed and installed on the top walls of the two sliding seats through abutting bolts, and the top ends of the two abutting columns are hingedly installed on the top of the outer wall of the corresponding vertical arc-shaped template.

[0017] Further, screw barrels are rotatably installed on the outer walls of the vertical arc-shaped templates through hinge seats, hexagonal seats are installed on the outer walls of the two screw barrels, screw studs are screwed and installed in the inner walls of the two screw barrels, support rods are installed on the two screw studs, and the bottom ends of the two support rods are hingedly installed on the outer walls of the corresponding abutting columns.

[0018] The second aspect of the present invention provides an installation method for a curved fair-faced concrete formwork, including the following steps:

[0019] S10. Fix the two bases at a predetermined position;

[0020] S20. Insert the arc-shaped limiting parts of the two vertical arc-shaped templates into the arc-shaped grooves of the bases to form a curved cylindrical pouring cavity;

[0021] S30. Push the vertical arc-shaped template to make the sealing seat fit into the sealing groove to form an outer layer seal;

[0022] S40. Insert the elastic seal into the insertion slot to form an inner layer seal;

[0023] S50. Connect the connecting seats through bolt-nut assemblies;

[0024] S60. Install the tensioning and installation component and adjust the formwork spacing;

[0025] S67. Install the abutting component and adjust the position of the abutting column through the sliding seat;

[0026] S80. Install the support rod and rotate the hexagonal seat to adjust the support height.

[0027] In the second aspect of the present invention, as an alternative embodiment, in step S60, the relative positions of the tension rods are fixed through positioning pins and anti-disengagement seats; in step S67, the sliding seats are limited to the support seats through fastening bolts.

[0028] In the second aspect of the present invention, as an alternative embodiment, in step S80, the protruding length of the stud is adjusted by rotating the screw barrel to adjust the support angle of the support rod for the vertical arc-shaped formwork.

[0029] The present invention has the following beneficial effects:

[0030] For the fair-faced concrete formwork with a curved surface according to the embodiment of the present invention, in practical applications, the arc-shaped limiting part of the formwork is inserted into the arc-shaped groove of the base, and positioning is achieved through curved surface geometric constraints; the formwork is pushed to make the sealing seat fit with the sealing groove to form an outer layer seal; the elastic sealing member is inserted into the insertion groove to complete the inner layer seal. The fitting of the sealing seat and the sealing groove blocks most of the slurry; if there are slight gaps in the outer layer seal due to vibration or pressure, the elastic sealing member absorbs the vibration energy through deformation to prevent the loosening of the sealing structure. The present invention adopts a double-layer seal to form redundant protection. Even if there are slight gaps in the outer layer seal due to vibration or pressure, the elastic sealing member absorbs the vibration energy through deformation to prevent the loosening of the sealing structure, which can effectively block the slurry and avoid defects such as pitted surface and sand holes caused by slurry leakage. In addition, during the concrete vibration process, the elastic sealing member can absorb the vibration energy and automatically compensate for the sealing gap caused by the slight displacement of the formwork; the curved surface of the arc-shaped limiting part is completely fitted with the arc-shaped groove, eliminating the arc error caused by positioning deviation of the traditional formwork; the arc-shaped groove forms a curved surface geometric constraint on the arc-shaped limiting part, realizing the high-precision positioning and anti-deformation of the formwork, and preventing the formwork from twisting or deforming under the lateral pressure of the concrete. In addition, the installation method of the present invention reduces the construction complexity and reduces the human operation error by installing in steps. The sequential completion of the outer layer seal and the inner layer seal ensures the effective cooperation of the two sealing structures and avoids cross interference. Description of the Drawings

[0031] The schematic drawings of the specification forming a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0032] Figure 1 It is the front view of the external structure of the present invention;

[0033] Figure 2 It is the top view of the overall structure of the present invention;

[0034] Figure 3 It is the combined schematic diagram of the base and the formwork assembly of the present invention;

[0035] Figure 4 It is the exploded view of the internal structure of the present invention;

[0036] Figure 5 It is of the present invention Figure 4 The enlarged view of the structure at A;

[0037] Figure 6Exploded top view of the internal structure of the present invention;

[0038] Figure 7 Exploded view of the internal structure of the pulling and mounting assembly of the present invention;

[0039] Figure 8 Schematic diagram of the external structure of the pulling and mounting assembly of the present invention;

[0040] Figure 9 Schematic diagram of the external structure of the abutting assembly of the present invention;

[0041] Figure 10 Exploded view of the internal structure of the abutting assembly of the present invention;

[0042] Figure 11 For the present invention Figure 10 Enlarged view of the structure at position C;

[0043] Figure 12 For the present invention Figure 10 Enlarged view of the structure at position B.

[0044] In the figure,

[0045] 10. Base; 101. Arc-shaped groove;

[0046] 20. Template assembly; 21. Vertical arc-shaped template; 22. Arc-shaped limiting part; 23. Sealing seat; 24. Sealing groove; 25. Limiting groove; 251. Limiting hole; 252. Communication hole;

[0047] 30. Elastic seal; 31. Arc-shaped sealing part; 32. Connecting part; 33. Limiting part;

[0048] 40. Connecting structure; 41. Connecting seat; 411. Through hole; 42. Bolt and nut assembly;

[0049] 50. Pulling and mounting assembly; 51. Tensile rod; 52. Positioning groove; 53. Mounting port; 54. Positioning pin; 55. Connecting plate; 56. Anti-disengagement seat; 57. Handle; 58. Clamping plate; 59. Clamping seat;

[0050] 60. Abutting assembly; 61. Abutting column; 62. Support seat; 63. Groove; 64. Sliding rod; 65. Threaded groove; 66. Support rod; 67. Stud; 68. Threaded barrel; 69. Hexagonal seat; 610. Sliding seat; 611. Tightening bolt; 612. Positioning block. Detailed implementation manner

[0051] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Except as otherwise specifically stated, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0052] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.

[0053] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a direct connection, or can be connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0054] The terms "first", "second", etc. in the description and claims of the present application and the above accompanying drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0055] Embodiment 1:

[0056] Please refer to Figures 1-12 , the embodiment of the present invention provides a curved fair-faced concrete formwork, including:

[0057] Two symmetrically arranged bases 10, and each upper surface of the base 10 is provided with an arc-shaped groove 101;

[0058] The formwork component 20 includes two vertical arc-shaped formworks 21. An arc-shaped limiting portion 22 is formed by extending downward at the bottom of each vertical arc-shaped formwork 21. The two vertical arc-shaped formworks 21 are respectively inserted into the two arc-shaped grooves 101 through the arc-shaped limiting portions 22, so that a curved surface columnar casting cavity is jointly defined between the inner walls of the two vertical arc-shaped formworks 21; a sealing seat 23 and a sealing groove 24 are respectively formed at both ends of each vertical arc-shaped formwork 21, and the two vertical arc-shaped formworks 21 are respectively and mutually engaged through the sealing seat 23 and the sealing groove 24 to form an outer sealing structure; limiting grooves 25 are respectively formed at both ends of each vertical arc-shaped formwork 21, and the limiting grooves 25 at both ends of the two vertical arc-shaped formworks 21 are butted and communicated with each other to form an insertion groove, and the insertion groove is located inside the sealing seat 23.

[0059] Two elastic seals 30 are respectively inserted into the two insertion grooves to form an inner sealing structure.

[0060] In the case of the curved fair-faced concrete formwork according to the embodiment of the present invention, in practical applications, the arc-shaped limiting portion 22 of the formwork is inserted into the arc-shaped groove 101 of the base 10, and positioning is achieved through the curved surface geometric constraint; the formwork is pushed to make the sealing seat 23 and the sealing groove 24 engaged to form an outer seal; the elastic seal 30 is inserted into the insertion groove to complete the inner seal. The engagement of the sealing seat 23 and the sealing groove 24 blocks most of the slurry; if there are slight gaps in the outer seal due to vibration or pressure, the elastic seal 30 absorbs the vibration energy through deformation to prevent the loosening of the sealing structure. The present invention adopts a double-layer seal to form redundant protection. Even if there are slight gaps in the outer seal due to vibration or pressure, the elastic seal 30 absorbs the vibration energy through deformation to prevent the loosening of the sealing structure, which can effectively block the slurry and avoid defects such as pitted surfaces and sand holes caused by slurry leakage. In addition, during the concrete vibration process, the elastic seal 30 can absorb the vibration energy and automatically compensate for the sealing gap caused by the slight displacement of the formwork; the arc-shaped limiting portion 22 is completely attached to the curved surface of the arc-shaped groove 101, eliminating the arc error caused by the positioning deviation of the traditional formwork; the arc-shaped groove 101 forms a curved surface geometric constraint on the arc-shaped limiting portion 22, realizing the high-precision positioning and anti-deformation of the formwork, and preventing the formwork from twisting or deforming under the lateral pressure of the concrete.

[0061] In a preferred embodiment of the present invention, the limiting groove 25 includes a limiting hole 251 and a communication hole 252 that are communicated with each other from the inside to the outside; the radius of the limiting hole 251 is greater than the radius of the communication hole 252.

[0062] The elastic seal 30 includes an arc-shaped sealing portion 31, a connecting portion 32 and a limiting portion 33 that sequentially extend outward from both ends of the arc-shaped sealing portion 31; the shape and size of the limiting portion 33 match those of the limiting hole 251, and the shape and size of the connecting portion 32 match those of the communication hole 252. The limiting portion 33 and the connecting portion 32 are respectively inserted into the limiting hole 251 and the communication hole 252, and the outer side surface of the arc-shaped sealing portion 31 is closely attached to the inner side surface of the sealing seat 23.

[0063] On the basis of the above structure, the limiting portion 33 and the connecting portion 32 of the elastic seal 30 are respectively inserted into the limiting hole 251 and the communication hole 252. Since the shapes and sizes of the limiting hole 251 and the limiting portion 33, and the communication hole 252 and the connecting portion 32 match, the elastic seal 30 can be accurately installed in the limiting groove 25. After the installation is completed, the outer side surface of the arc-shaped sealing portion 31 is closely attached to the inner side surface of the sealing seat 23, forming an effective sealing interface. The arc-shaped sealing portion 31 can effectively block the slurry. The cooperation between the limiting portion 33 and the limiting hole 251 and the cooperation between the connecting portion 32 and the communication hole 252 jointly limit the position of the elastic seal 30 in the limiting groove 25, preventing it from falling off during construction vibration and ensuring the reliability of the seal.

[0064] In a preferred embodiment of the present invention, the elastic seal 30 is made of ethylene propylene diene monomer (EPDM). A silicone oil or polytetrafluoroethylene coating is applied to the surface of the elastic seal 30 to reduce the adhesion between the concrete and the seal, facilitating peeling.

[0065] In a preferred embodiment of the present invention, a connecting structure 40 is further included. The connecting structure 40 includes connecting seats 41 provided at both ends of the vertical arc-shaped formwork 21 and a bolt and nut assembly 42; a through hole 411 is formed in the connecting seat 41; after the connecting seats 41 on the two opposite vertical arc-shaped formworks 21 are abutted, the bolt and nut assembly 42 passes through the through hole 411 and is screwed. In this way, the cooperation between the through hole 411 of the connecting seat 41 and the bolt and nut assembly 42 realizes the quick docking and fixation of the formwork assembly 20, shortening the construction period. The bolt connection provides rigid restraint to prevent the formwork from separating due to lateral pressure during pouring.

[0066] In a preferred embodiment of the present invention, the tops of the two vertical arc-shaped templates 21 are also connected by a tension assembly 50 to achieve fine adjustment of the template spacing and mold closing traction. The tension assembly 50 includes two tension rods 51 arranged symmetrically left and right. One ends of the two tension rods 51 away from each other are hingedly installed on the top walls of the corresponding vertical arc-shaped templates 21. Positioning grooves 52 are formed on one sides of the two tension rods 51 adjacent to each other. The two positioning grooves 52 are arranged symmetrically up and down. One sides of the outer walls of the two tension rods 51 corresponding to the positioning grooves 52 are in mutual contact; a number of mounting openings 53 are evenly formed on the outer walls of the two tension rods 51 at positions corresponding to the positioning grooves 52. Positioning pins 54 are slidably installed on the inner walls of a number of overlapping mounting openings 53 on the outer walls of the two tension rods 51. A connecting plate 55 is installed on the top walls of the number of positioning pins 54. A handle 57 is installed on the top wall of the connecting plate 55; a same anti-detachment seat 56 is sleeved on the outer walls of the number of positioning pins 54. Clamping plates 58 are hingedly installed on the front and rear walls of the anti-detachment seat 56. One sides of the top walls of the two clamping plates 58 adjacent to each other are provided with clamping seats 59. The two clamping seats 59 are both clamped and installed on the top wall of the connecting plate 55.

[0067] On the basis of the above structure, the present invention realizes fine adjustment of the distance between the tops of the two templates by the hinge of the tension rod 51 and the sliding of the positioning pin 54 to meet the requirements of concrete members with different curvatures. The clamping design of the anti-detachment seat 56 and the clamping plate 58 ensures that the positioning pin 54 remains fixed in a vibrating environment and prevents the tension rod 51 from loosening.

[0068] In a preferred embodiment of the present invention, the two bases 10 are also connected by a tension assembly 50 to achieve fine adjustment of the distance between the bases 10 and mold closing traction.

[0069] In a preferred embodiment of the present invention, it further includes an abutting assembly 60; the abutting assembly 60 includes two support seats 62 arranged symmetrically left and right. One sides of the two support seats 62 adjacent to each other are connected to the outer side walls of the corresponding bases 10. Grooves 63 are formed on the top walls of the two support seats 62. Sliding rods 64 are installed on the inner walls of the two grooves 63;

[0070] In this implementation, the support seats 62 are mainly used for installing the sliding rods 64.

[0071] Specifically, sliding seats 610 are slidably installed on the outer walls of the two sliding rods 64. Positioning blocks 612 are installed on the top walls of the two sliding seats 610. A number of screw grooves 65 are evenly formed on the front and rear parts of the top walls of the two support seats 62. Fastening bolts 611 are screwed on the top walls of the number of positioning blocks 612. The bottom ends of the number of fastening bolts 611 are screwed on the inner walls of the corresponding screw grooves 65;

[0072] In this implementation, the sliding seat 610 can slide along the outer wall of the sliding rod 64 within the inner wall of the groove 63. With the cooperation of the positioning block 612 and the fastening bolt 611, the fastening bolt 611 is screwed into the inner wall of the screw groove 65 to achieve the limit fixation of the sliding seat 610.

[0073] Specifically, the top walls of both sliding seats 610 are screwed and installed with abutting columns 61 through abutting bolts, and the top ends of both abutting columns 61 are hingedly installed with the top of the outer wall of the corresponding vertical arc-shaped formwork;

[0074] In this implementation, the abutting column 61 can abut against the outer wall of the vertical arc-shaped formwork, improving the stability in the vertical direction after mold closing, preventing tilting and offset during concrete pouring, and improving the concrete forming effect.

[0075] Specifically, screw cylinders 68 are rotatably installed on the outer walls of the vertical arc-shaped formworks through hinge seats. Hexagonal seats 69 are installed on the outer walls of both screw cylinders 68. Screw columns 67 are screwed and installed in the inner walls of both screw cylinders 68. Support rods 66 are installed on both screw columns 67, and the bottom ends of both support rods 66 are hingedly installed with the outer walls of the corresponding abutting columns 61;

[0076] In this implementation, by rotating the hexagonal seat 69 to drive the screw cylinder 68 to rotate, and then driving the screw column 67 to rotate, the support rod 66 and the abutting column 61 can be driven to move. Based on the principle of triangle stability, the abutting component 60 can achieve stable support for the vertical arc-shaped formwork, preventing offset problems caused by concrete impact after mold closing.

[0077] Embodiment 2:

[0078] The present invention also provides an installation method for a curved fair-faced concrete formwork, including the following steps:

[0079] S10. Fix the two bases at the predetermined positions;

[0080] S20. Insert the arc-shaped limiting parts of the two vertical arc-shaped formworks into the arc-shaped grooves of the bases to form a curved cylindrical pouring cavity;

[0081] S30. Push the vertical arc-shaped formwork to make the sealing seat fit with the sealing groove to form an outer layer seal;

[0082] S40. Insert the elastic sealing member into the insertion slot to form an inner layer seal;

[0083] S50. Connect the connecting seats through the bolt-nut assembly;

[0084] S60. Install the tensioning assembly and adjust the formwork spacing;

[0085] S67. Install the abutting component and adjust the position of the abutting column through the sliding seat;

[0086] S80. Install the support rod and rotate the hexagonal seat to adjust the support height.

[0087] Based on the above method, the present invention reduces the construction complexity and reduces human operation errors by installing in steps (base, template, sealing, connection, support). The sequential completion of the outer seal and the inner seal ensures the effective cooperation of the two seal structures and avoids cross-interference.

[0088] In a preferred embodiment of the present invention, in step S60, the relative positions of the tension rods are fixed by positioning pins and anti-disengagement seats; in step S67, the sliding seat is limited to the support seat by fastening bolts.

[0089] Based on the above method, the snap-fit design of the positioning pins and the anti-disengagement seats ensures that the tension rods remain stable in a vibrating environment and avoids changes in the template spacing. Fixing the sliding seat by fastening bolts simplifies the adjustment process of the support position and improves the construction efficiency.

[0090] In a preferred embodiment of the present invention, in step S80, the protruding length of the stud is adjusted by rotating the screw barrel to adjust the support angle of the support rod for the vertical arc-shaped template.

[0091] Based on the above method, the stepless adjustment of the support rod length can dynamically adjust the support angle according to the actual stress state of the template to adapt to complex construction environments. Replacing traditional welding with mechanical locking (the thread fit between the screw barrel and the stud) avoids the risk of high-temperature operations.

[0092] Although only some components and embodiments of the present application have been illustrated and described, many modifications and changes can be envisioned by those skilled in the art without actually departing from the scope and spirit of the claims, such as changes in the size, dimensions, structure, shape, and ratio of each element, installation arrangement, material use, color, orientation, etc.

[0093] The above embodiments are only the preferred embodiments of the embodiments of the present invention and cannot be used to limit the scope of protection of the embodiments of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the embodiments of the present invention fall within the scope of protection required by the embodiments of the present invention.

Claims

1. A curved surface plain concrete formwork, characterized in that: include: Two symmetrically arranged bases, each of which has an arc-shaped groove on its upper surface; A template assembly, wherein the template assembly comprises two vertical arc templates, each of which has an arc-shaped limiting portion extending downward at its bottom, and the two vertical arc templates are respectively plugged into the two arc-shaped grooves through the arc-shaped limiting portions, so that a curved cylindrical casting cavity is jointly defined between the inner walls of the two vertical arc templates; a sealing seat and a sealing groove are respectively formed at the two ends of each vertical arc template, and the two vertical arc templates are respectively engaged with each other through the sealing seat and the sealing groove in a one-to-one correspondence to form an outer sealing structure; a limiting groove is respectively formed at the two ends of each vertical arc template, and the limiting grooves at both ends of the two vertical arc templates are connected to each other to form a plug-in groove, and the plug-in groove is located on the inner side of the sealing seat; Two elastic sealing members are respectively inserted into the two inserting grooves to form an inner sealing structure.

2. The curved surface plain concrete formwork according to claim 1, characterized in that: The limiting groove includes a limiting hole and a connecting hole which are interconnected from the inside to the outside; the radius of the limiting hole is larger than the radius of the connecting hole; The elastic sealing component includes an arc-shaped sealing portion, a connecting portion and a limiting portion extending outward in sequence along both ends of the arc-shaped sealing portion; the shape and size of the limiting portion match the limiting hole, and the shape and size of the connecting portion match the connecting hole. The limiting portion and the connecting portion are respectively inserted into the limiting hole and the connecting hole, and the outer side surface of the arc-shaped sealing portion is tightly fitted with the inner side surface of the sealing seat.

3. The curved surface plain concrete formwork according to claim 2, characterized in that: The elastic sealing element is made of EPDM rubber, and silicone oil or polytetrafluoroethylene coating is coated on the surface of the elastic sealing element.

4. The curved surface plain concrete formwork according to claim 1, characterized in that: It also includes a connecting structure, which includes a connecting seat and a bolt and nut assembly arranged at both ends of the vertical arc template; a through hole is opened on the connecting seat; after the two connecting seats relative to each other on the two vertical arc templates are abutted, the bolt and nut assembly passes through the through hole and is screwed.

5. The curved surface plain concrete formwork according to claim 1, characterized in that: The tops of the two vertical arc templates are also connected by a pulling assembly; the pulling assembly includes two stretching rods arranged symmetrically on the left and right, and the ends of the two stretching rods that are away from each other are hingedly installed on the top wall of the corresponding vertical arc template, and the adjacent sides of the two stretching rods are provided with positioning grooves, and the two positioning grooves are symmetrically arranged up and down, and the outer walls of the two stretching rods and the sides corresponding to the positioning grooves are in contact with each other; the outer walls of the two stretching rods and the positions corresponding to the positioning grooves are evenly provided with a plurality of installation openings, and the inner walls of the plurality of installation openings overlapping each other on the outer walls of the two stretching rods are slidably installed with positioning pins, and the top walls of the plurality of positioning pins are installed with the same connecting plate, and the top walls of the connecting plates are installed with handles; the outer walls of the plurality of positioning pins are sleeved with the same anti-detachment seat, and the front and rear walls of the anti-detachment seat are hingedly installed with a clamping plate, and the adjacent sides of the top walls of the two clamping plates are installed with a clamping seat, and the two clamping seats are clamped and installed on the top wall of the connecting plate.

6. The curved surface plain concrete formwork according to claim 1, characterized in that: It also includes an abutment assembly; the abutment assembly includes two support seats, the two support seats are symmetrically arranged on the left and right, the adjacent sides of the two support seats are connected to the corresponding outer side walls of the base, the top walls of the two support seats are provided with grooves, and the inner walls of the two grooves are provided with sliding rods; the outer walls of the two sliding rods are slidably installed with sliding seats, and the top walls of the two sliding seats are provided with positioning blocks, and the front and rear parts of the top walls of the two support seats are evenly provided with a number of screw grooves, and the top walls of the positioning blocks are screwed with fastening bolts, and the bottom ends of the fastening bolts are screwed with the corresponding inner walls of the screw grooves; the top walls of the two sliding seats are screwed with abutment columns through abutment bolts, and the top ends of the two abutment columns are hinged to the top of the corresponding vertical arc-shaped template outer wall.

7. The curved surface plain concrete formwork according to claim 6, characterized in that: The outer walls of the vertical arc-shaped templates are rotatably installed with screw barrels through hinged seats, the outer walls of the two screw barrels are installed with hexagonal seats, the inner walls of the two screw barrels are screwed with studs, the two studs are installed with support rods, and the bottom ends of the two support rods are hingedly installed with the corresponding outer walls of the abutment columns.

8. A method for installing a curved surface plain concrete formwork according to any one of claims 1 to 7, comprising the following steps: S10, fixing two bases at predetermined positions; S20, inserting the arc-shaped limiting parts of the two vertical arc-shaped templates into the arc-shaped grooves of the base to form a curved cylindrical casting cavity; S30, pushing the vertical arc-shaped template to make the sealing seat fit into the sealing groove to form an outer seal; S40, inserting the elastic sealing member into the plug-in groove to form an inner seal; S50, connecting the connection seat by means of a bolt and nut assembly; S60, install the pulling assembly and adjust the template spacing; S67, installing the abutment assembly and adjusting the position of the abutment column through the sliding seat; S80, install the support rod and turn the hexagonal seat to adjust the support height.

9. The method for installing a curved surface plain concrete formwork according to claim 8, characterized in that: In step S60, the relative position of the stretching rod is fixed by the positioning pin and the anti-slip seat; in step S67, the sliding seat is restricted to the support seat by tightening the bolts.

10. The method for installing a curved surface plain concrete formwork according to claim 8, characterized in that: In step S80, the extension length of the stud is adjusted by rotating the screw barrel to adjust the supporting angle of the support rod to the vertical arc template.

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