Fair-faced concrete double-curved-surface beam formwork system and manufacturing and forming method thereof

Abstract

The invention discloses a fair-faced concrete double-curved-surface beam formwork system and a manufacturing and forming method thereof.The fair-faced concrete double-curved-surface beam formwork system comprises a first inner side curved-surface unit formwork, an outer side curved-surface unit formwork, a second inner side curved-surface unit formwork and a bottom plate formwork, and the first inner side curved-surface unit formwork is located above the bottom plate formwork; and the second inner side curved surface unit template is positioned below the bottom plate template. According to the fair-faced concrete double-curved-surface beam formwork system and the manufacturing and forming method mechanism thereof, the grooves, the movable grooves, the rotating plates and the adjusting rods are arranged in the fair-faced screws, the rotating plates and the adjusting rods are matched with the grooves and the movable grooves, a flexible adjusting and reinforcing mechanism is provided, and the mechanism allows operators to adjust and reinforce the fair-faced concrete double-curved-surface beam formwork system according to actual needs in the pouring process. The rotating plate is driven to rotate by rotating the operation plate, then telescopic adjustment of the clear water screw rod is achieved through threaded connection of the adjusting rod, and by means of the adjusting mode, the supporting force of the inner side formwork is improved, and the stability of the inner side formwork is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of fair-faced concrete, in particular to a fair-faced concrete hyperbolic beam formwork system and a manufacturing method thereof. Background Art

[0002] During the construction of exposed concrete projects, the construction and quality control of special-shaped structures and components have always been a difficult point. The requirement for exposed concrete is to form it in one step to maintain the original appearance of the concrete, without repairing the exposed concrete components. The templates of special-shaped, curved or multi-curved components are not easy to process.

[0003] Existing hyperbolic beam formwork systems typically use simple connectors or support structures to reinforce the inner formwork. These structures often fail to provide sufficient support and stability, and are prone to deformation or displacement, especially when subjected to the enormous pressure of concrete pouring. Insufficient reinforcement of the inner formwork not only affects the dimensional accuracy of the beam, but may also cause unevenness or cracks on the concrete surface. Summary of the Invention

[0004] The object of the present invention is to provide a fair-faced concrete hyperbolic beam formwork system and a method for manufacturing the same, so as to solve the problem raised in the above-mentioned background technology that the existing hyperbolic beam formwork system usually adopts simple connectors or supporting structures to reinforce the inner formwork, and these structures often cannot provide sufficient supporting force and stability, especially when subjected to the huge pressure during concrete pouring, and are prone to deformation or displacement. Insufficient reinforcement of the inner formwork not only affects the dimensional accuracy of the beam body, but may also cause unevenness or cracks on the concrete surface.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fair-faced concrete double-curved beam formwork system, comprising a first inner curved surface unit formwork, an outer curved surface unit formwork, a second inner curved surface unit formwork and a bottom plate formwork, wherein the first inner curved surface unit formwork is located above the bottom plate formwork, the second inner curved surface unit formwork is located below the bottom plate formwork, one side of the second inner curved surface unit formwork is spliced with the bottom end of one side of the outer curved surface unit formwork, the inner side of the outer curved surface unit formwork, the inner side of the first inner curved surface unit formwork and the inner side of the second inner curved surface unit formwork are all provided with arc-shaped unit formworks, and a plurality of arc-shaped unit formworks are provided at the top position and the bottom position between the two arc-shaped unit formworks arranged on the left and right. A water-clearing screw, both sides of the water-clearing screw respectively penetrate into the outside of the first inner curved surface unit template, the outer curved surface unit template and the second inner curved surface unit template, a groove is provided inside the water-clearing screw, a movable groove is provided near the center of the water-clearing screw, a rotating plate is provided inside the movable groove, an annular groove is provided on both sides of the rotating plate, the center position of the water-clearing screw is clamped with the annular groove, a through hole one is provided in the center of the rotating plate, internal threads are provided on both sides of the through hole one, and adjusting rods are provided on both sides of the groove, and the opposite sides of the two adjusting rods penetrate into the interior of the through hole one, and an external thread is provided on one side of the surface of the adjusting rod, and the external thread is threadedly connected with the internal thread;

[0006] The top and bottom of the surface of the water-cleaning screw are provided with outer sliding grooves on both sides, and the inside of the water-cleaning screw is provided with moving grooves on both sides of the corresponding grooves, and the inside of the moving groove is slidably connected with an internal circular plate, and the opposite sides of the two adjusting rods respectively penetrate into the interior of the two moving grooves and are rotatably connected with the internal circular plate through bearings, and the top and bottom of the internal circular plate are fixedly connected with moving blocks, and the opposite sides of the two moving blocks respectively penetrate into the outside of the two outer sliding grooves and are fixedly connected with external annular abutment plates, and the opposite sides of the two external annular abutment plates are fixedly connected with anti-slip soft blocks, and the side of the anti-slip soft block away from the external annular abutment plate contacts the inner wall of the arc-shaped unit template;

[0007] The outer side of the clean water screw corresponding to the side of the outer curved unit template and the second inner curved unit template opposite to the first inner curved unit template is fixedly connected with a fixing sleeve, a sleeve groove is provided in the center of the fixing sleeve, a fixing plate is provided on one side of the fixing sleeve, the fixing plate is sleeved with the clean water screw, a clamping plate is fixedly connected to the center of one side of the fixing plate, one side of the clamping plate passes through the interior of the sleeve groove and is sleeved with the clean water screw, a thread groove is provided on one side of the fixing sleeve, and a fixing bolt is threadedly connected to the other side of the fixing plate, and one side of the fixing bolt passes through the interior of the thread groove and is threadedly connected to the thread groove.

[0008] Preferably, reinforcing rods are provided between the two arc-shaped unit templates arranged on the left and right and between the two water-cleaning screws, and both sides of the reinforcing rods respectively penetrate to the outside of the first inner curved unit template, the outer curved unit template and the second inner curved unit template.

[0009] Preferably, a plurality of template secondary keels are fixedly assembled between the outer curved surface unit template and the arc-shaped unit template, between the first inner curved surface unit template and the arc-shaped unit template, and between the second inner curved surface unit template and the arc-shaped unit template.

[0010] Preferably, the opposite sides of the two arc-shaped unit templates are fixedly equipped with a plurality of shaping keels, and the opposite sides of the two arc-shaped unit templates are fixedly connected with positioning blocks below the corresponding shaping keels.

[0011] Preferably, an annular slide is fixedly connected to the inner wall of the annular groove, the inner wall of the annular slide contacts the end face of the water-cleaning screw, and an operating plate is fixedly connected to the outer surface of the rotating plate.

[0012] Preferably, one side of the built-in circular plate is fixedly connected to the extended fixed plate at the outer end position, one side of the extended fixed plate passes through the interior of the groove, one side of the top and bottom of the extended fixed plate are fixedly connected to the limiting slide, and the interior of the water-cleaning screw rod is provided with limiting grooves on one side corresponding to the top and bottom of the groove, the side of the limiting slide away from the extended fixed plate passes through the interior of the limiting groove and is slidably connected to the limiting groove, a through hole 2 is provided in the center of the built-in circular plate, and the adjusting rod is located inside the through hole 2.

[0013] A method for manufacturing a fair-faced concrete hyperbolic beam formwork system comprises the following steps:

[0014] Step 1: First, assemble the first inner curved surface unit template, the outer curved surface unit template, the second inner curved surface unit template, and the bottom plate template according to the design requirements, ensuring that the templates are tightly spliced together. Install curved unit templates on the inner sides of the first inner curved surface unit template, the outer curved surface unit template, and the second inner curved surface unit template, respectively, ensuring that the curved unit templates match the designed shape of the hyperbolic beam.

[0015] Step 2: Install the clean water screw at the top position and the bottom position between the left and right arc unit templates respectively. The clean water screw passes through the outside of the first inner curved unit template, the outer curved unit template and the second inner curved unit template. Rotate the rotating plate inside the clean water screw, and realize the rotation of the rotating plate by engaging with the center position of the clean water screw through the annular groove on the rotating plate. A through hole 1 is provided in the center of the rotating plate. Internal threads are provided on both sides of the through hole 1. External threads are provided on one side of the surface of the adjusting rod. The external threads are threadedly connected to the internal threads. By rotating the adjusting rod, it can realize its in and out movement in the through hole 1. The movement of the adjusting rod is converted into the lateral movement of the external annular plate through the built-in circular plate and the moving block. The anti-slip soft block on the external annular plate contacts the inner wall of the arc unit template to realize the tightening and fine-tuning of the arc unit template.

[0016] Step three, install a fixing sleeve on the outside of the water-clearing screw on the opposite side of the outer curved unit template, the second inner curved unit template and the first inner curved unit template, sleeve the fixing plate and the water-clearing screw, and thread the fixing plate and the fixing sleeve with a fixing bolt to fix the position of the water-clearing screw, install a reinforcing rod between the two water-clearing screws corresponding to the left and right arc-shaped unit templates to enhance the overall stability of the template system, install a template secondary keel between the outer curved unit template and the arc-shaped unit template, between the first inner curved unit template and the arc-shaped unit template, and between the second inner curved unit template and the arc-shaped unit template to improve the rigidity and deformation resistance of the template system;

[0017] Step 4: Install the shaping keel on the opposite sides of the left and right arc unit templates to ensure the shape of the arc unit template is stable. Install the positioning block under the shaping keel to ensure the accurate positioning of the template system during the pouring process. Pour the plain concrete inside the template system according to the design requirements.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a flexible adjustment and reinforcement mechanism by arranging grooves, movable grooves, and a rotating plate and an adjusting rod that cooperate with the grooves inside the water-clearing screw. This mechanism allows the operator to drive the rotating plate to rotate by rotating the operating plate according to actual needs during the pouring process, and then realizes the telescopic adjustment of the water-clearing screw through the threaded connection of the adjusting rod. This adjustment method not only improves the supporting force of the inner formwork, but also enhances its stability, effectively preventing the formwork from being deformed or displaced when subjected to the pressure of concrete pouring. The design of the water-clearing screw not only takes into account the reinforcement of the formwork, but also optimizes the connection structure between the formworks. The water-clearing screw passes through multiple formwork units, and is used in combination with a fixing sleeve, a fixing plate, a clamping plate, and a fixing bolt. The present invention realizes a stable and reliable formwork connection method. This connection method effectively avoids the problems of loose connection and easy loosening in traditional connection methods, and ensures the overall stability of the formwork system during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram;

[0022] Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of B in the middle;

[0023] Figure 4 For the present invention Figure 1 A partial enlarged schematic diagram of center C;

[0024] Figure 5 A structural perspective view of the rotating plate of the present invention;

[0025] Figure 6 This is a structural perspective view of the extended fixing plate of the present invention.

[0026] In the figure: 1. First inner curved surface unit template; 2. Outer curved surface unit template; 3. Second inner curved surface unit template; 4. Arc unit template; 5. Shaped keel; 6. Positioning block; 7. Bottom plate template; 8. Template secondary keel; 9. Clean water screw; 10. Groove; 11. Movable groove; 12. Rotating plate; 13. Annular groove; 14. Annular slide; 15. Through hole one; 16. Internal thread; 17. Adjusting rod; 18. External thread; 19. Operating panel; 20. Built-in circular plate; 21. Extended fixed plate; 22. Through hole two; 23. Limiting groove; 24. Limiting slide; 25. External annular abutment plate; 26. Moving block; 27. External sliding groove; 28. Moving groove; 29. Anti-skid soft block; 30. Fixed sleeve; 31. Sleeve groove; 32. Fixed plate; 33. Clamping plate; 34. Threaded groove; 35. Fixing bolt; 36. Reinforcement rod. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-6 The present invention provides a technical solution: a fair-faced concrete hyperbolic beam formwork system, comprising a first inner curved surface unit formwork 1, an outer curved surface unit formwork 2, a second inner curved surface unit formwork 3 and a bottom plate formwork 7, wherein the first inner curved surface unit formwork 1 is located above the bottom plate formwork 7, the second inner curved surface unit formwork 3 is located below the bottom plate formwork 7, one side of the second inner curved surface unit formwork 3 is spliced with the bottom end of one side of the outer curved surface unit formwork 2, the inner side of the outer curved surface unit formwork 2, the inner side of the first inner curved surface unit formwork 1 and the inner side of the second inner curved surface unit formwork 3 are all provided with arc-shaped unit formwork 4, and a plurality of clear-faced screws 9 are provided at the top and bottom positions between the two left and right curved surface unit formworks 4, the clear-faced screws 9 The two sides respectively penetrate into the outside of the first inner curved surface unit template 1, the outer curved surface unit template 2 and the second inner curved surface unit template 3, a groove 10 is provided inside the water-cleaning screw 9, a movable groove 11 is provided near the center of the water-cleaning screw 9, a rotating plate 12 is provided inside the movable groove 11, an annular groove 13 is provided on both sides of the rotating plate 12, the center of the water-cleaning screw 9 is engaged with the annular groove 13, a through hole 15 is provided in the center of the rotating plate 12, an internal thread 16 is provided on both sides of the through hole 15, and an adjusting rod 17 is provided on both sides of the groove 10, and the opposite sides of the two adjusting rods 17 penetrate into the interior of the through hole 15, and an external thread 18 is provided on one side of the surface of the adjusting rod 17, which is threadedly connected to the internal thread 16;

[0029] The top and bottom of the surface of the water-clearing screw 9 are provided with outer sliding grooves 27 on both sides, and the interior of the water-clearing screw 9 is provided with moving grooves 28 on both sides of the corresponding grooves 10. The interior of the moving groove 28 is slidably connected with a built-in circular plate 20, and the opposite sides of the two adjusting rods 17 respectively penetrate into the interior of the two moving grooves 28 and are rotatably connected to the built-in circular plate 20 through bearings. The top and bottom of the built-in circular plate 20 are fixedly connected with moving blocks 26, and the opposite sides of the two moving blocks 26 respectively penetrate into the outside of the two outer sliding grooves 27 and are fixedly connected with external annular abutment plates 25. The opposite sides of the two external annular abutment plates 25 are fixedly connected with anti-skid soft blocks 29, and the side of the anti-skid soft blocks 29 away from the external annular abutment plates 25 contacts the inner wall of the arc-shaped unit template 4;

[0030] The outer side of the outer curved unit template 2 and the second inner curved unit template 3 and the first inner curved unit template 1 are fixedly connected with a fixing sleeve 30, and a sleeve groove 31 is opened in the center of the fixing sleeve 30. A fixing plate 32 is provided on one side of the fixing sleeve 30, and the fixing plate 32 is sleeved with the water-cleaning screw 9. A clamping plate 33 is fixedly connected to the center of one side of the fixing plate 32. One side of the clamping plate 33 passes through the interior of the sleeve groove 31 and is sleeved with the water-cleaning screw 9. A threaded groove 34 is opened on one side of the fixing sleeve 30, and a fixing bolt 35 is threadedly connected to the other side of the fixing plate 32. One side of the fixing bolt 35 passes through the interior of the threaded groove 34 and is threadedly connected to the threaded groove 34.

[0031] Reinforcement rods 36 are provided between the two arc-shaped unit templates 4 arranged on the left and right and between the two water-cleaning screws 9. Both sides of the reinforcement rods 36 respectively penetrate the outside of the first inner curved unit template 1, the outer curved unit template 2 and the second inner curved unit template 3.

[0032] Several template secondary keels 8 are fixedly assembled between the outer curved unit template 2 and the arc-shaped unit template 4, between the first inner curved unit template 1 and the arc-shaped unit template 4, and between the second inner curved unit template 3 and the arc-shaped unit template 4.

[0033] The opposite sides of the two arc-shaped unit templates 4 are fixedly assembled with a plurality of shaping keels 5 , and the opposite sides of the two arc-shaped unit templates 4 are fixedly connected with positioning blocks 6 below the corresponding shaping keels 5 .

[0034] An annular slide plate 14 is fixedly connected to the inner wall of the annular groove 13 , and the inner wall of the annular slide plate 14 contacts the end surface of the water-cleaning screw 9 . An operating plate 19 is fixedly connected to the outer surface of the rotating plate 12 .

[0035] The outer end of one side of the built-in circular plate 20 is fixedly connected to the extended fixing plate 21, and one side of the extended fixing plate 21 passes through the interior of the groove 10. One side of the top and bottom of the extended fixing plate 21 are fixedly connected to the limiting slide 24. The inner part of the water cleaning screw 9 is provided with a limiting groove 23 on one side corresponding to the top and bottom of the groove 10. The side of the limiting slide 24 away from the extended fixing plate 21 passes through the interior of the limiting groove 23 and is slidably connected to the limiting groove 23. A through hole 22 is provided in the center of the built-in circular plate 20, and the adjusting rod 17 is located inside the through hole 22.

[0036] A method for manufacturing a fair-faced concrete hyperbolic beam formwork system comprises the following steps:

[0037] Step 1: First, assemble the first inner curved surface unit template 1, the outer curved surface unit template 2, the second inner curved surface unit template 3, and the bottom plate template 7 according to the design requirements, ensuring that the templates are tightly spliced together. Install the curved unit template 4 on the inner sides of the first inner curved surface unit template 1, the outer curved surface unit template 2, and the second inner curved surface unit template 3, respectively, ensuring that the curved unit template 4 matches the designed shape of the hyperbolic beam;

[0038] Step 2: Install the water-cleaning screw 9 at the top and bottom positions between the left and right arc-shaped unit templates 4 respectively. The water-cleaning screw 9 passes through the outside of the first inner curved unit template 1, the outer curved unit template 2 and the second inner curved unit template 3. Rotate the rotating plate 12 inside the water-cleaning screw 9, and engage with the center position of the water-cleaning screw 9 through the annular groove 13 on the rotating plate 12 to realize the rotation of the rotating plate 12. A through hole 15 is provided in the center of the rotating plate 12, and internal threads 16 are provided on both sides of the through hole 15. An external thread 18 is provided on one side of the surface of the adjusting rod 17, and the external thread 18 is threadedly connected to the internal thread 16. By rotating the adjusting rod 17, it can be realized that it can move in and out of the through hole 15. The movement of the adjusting rod 17 is converted into lateral movement of the external annular plate 25 through the built-in circular plate 20 and the moving block 26. The anti-slip soft block 29 on the external annular abutment plate 25 contacts the inner wall of the arc-shaped unit template 4 to achieve the fastening and fine-tuning of the arc-shaped unit template 4;

[0039] Step three, install a fixing sleeve 30 on the outer side of the clean water screw 9 corresponding to the side opposite to the outer curved unit template 2, the second inner curved unit template 3 and the first inner curved unit template 1, sleeve the fixing plate 32 with the clean water screw 9, and thread the fixing plate 32 and the fixing sleeve 30 with the fixing bolt 35 to fix the position of the clean water screw 9, install a reinforcing rod 36 between the two clean water screws 9 corresponding to the left and right arc unit templates 4 to enhance the overall stability of the template system, install a template secondary keel 8 between the outer curved unit template 2 and the arc unit template 4, between the first inner curved unit template 1 and the arc unit template 4, and between the second inner curved unit template 3 and the arc unit template 4 to improve the rigidity and anti-deformation ability of the template system;

[0040] Step 4: Install the shaping keel 5 on the opposite sides of the left and right arc unit templates 4 to ensure the shape of the arc unit template 4 is stable, install the positioning block 6 below the shaping keel 5 to ensure the accurate positioning of the template system during the pouring process, and pour the plain concrete inside the template system according to the design requirements.

[0041] In summary: the fair-faced concrete hyperbolic beam formwork system and its manufacturing and forming method mechanism, by arranging a groove 10, a movable groove 11 and a rotating plate 12 and an adjusting rod 17 cooperating therewith inside the fair-faced screw 9, the present invention provides a flexible adjustment and reinforcement mechanism, which allows the operator to drive the rotating plate 12 to rotate by rotating the operating plate 19 according to actual needs during the pouring process, and then realize the telescopic adjustment of the fair-faced screw 9 through the threaded connection of the adjusting rod 17. This adjustment method not only improves the supporting force of the inner formwork, but also enhances its stability, effectively preventing the formwork from deforming or displacing when it is subjected to the pressure of concrete pouring. The design of the fair-faced screw 9 not only takes into account the reinforcement of the formwork, but also optimizes the connection structure between the formworks. By passing the fair-faced screw 9 through multiple formwork units, combined with the use of a fixing sleeve 30, a fixing plate 32, a clamping plate 33 and a fixing bolt 35, the present invention realizes a stable and reliable formwork connection method, which effectively avoids the problems of loose connection and easy loosening in the traditional connection method, and ensures the overall stability of the formwork system during the pouring process.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fair-faced concrete double-curved beam formwork system, comprising a first inner curved surface unit formwork (1), an outer curved surface unit formwork (2), a second inner curved surface unit formwork (3) and a bottom plate formwork (7), characterized in that: The first inner curved surface unit template (1) is located above the bottom plate template (7), the second inner curved surface unit template (3) is located below the bottom plate template (7), and one side of the second inner curved surface unit template (3) is spliced with the bottom end of one side of the outer curved surface unit template (2). The inner side of the outer curved surface unit template (2), the inner side of the first inner curved surface unit template (1), and the inner side of the second inner curved surface unit template (3) are all provided with arc-shaped unit templates (4), and a plurality of water-clearing screws (9) are provided at the top and bottom positions between the two arc-shaped unit templates (4) arranged on the left and right. The two sides of the water-cleaning screw (9) respectively penetrate the outside of the first inner curved surface unit template (1), the outer curved surface unit template (2) and the second inner curved surface unit template (3); a groove (10) is provided inside the water-cleaning screw (9); a movable groove (11) is provided near the center of the water-cleaning screw (9); a rotating plate (12) is provided inside the movable groove (11); an annular groove (13) is provided on both sides of the rotating plate (12); the water-cleaning screw (9) The center position of the rotating plate (12) is engaged with the annular groove (13), a through hole (15) is provided at the center of the rotating plate (12), and internal threads (16) are provided on both sides of the through hole (15). Adjustment rods (17) are provided on both sides of the groove (10), and the opposite sides of the two adjustment rods (17) pass through the interior of the through hole (15). One side of the surface of the adjustment rod (17) is provided with an external thread (18), and the external thread (18) is threadedly connected to the internal thread (16).

2. The formwork system for a double-curved surface beam of plain concrete according to claim 1, characterized in that: The top and bottom of the surface of the water-cleaning screw (9) are provided with outer sliding grooves (27) at both sides, and the inner side of the water-cleaning screw (9) is provided with moving grooves (28) on both sides of the corresponding grooves (10). The inner side of the moving groove (28) is slidably connected with an internal circular plate (20). The opposite sides of the two adjusting rods (17) respectively penetrate into the interior of the two moving grooves (28) and are rotatably connected to the internal circular plate (20) through bearings. The top and bottom of the internal circular plate (20) are fixedly connected with moving blocks (26). The opposite sides of the two moving blocks (26) respectively penetrate into the outside of the two outer sliding grooves (27) and are fixedly connected with an external annular abutment plate (25). The opposite sides of the two external annular abutment plates (25) are fixedly connected with anti-skid soft blocks (29). The side of the anti-skid soft block (29) away from the external annular abutment plate (25) contacts the inner wall of the arc unit template (4). The outer side of the water-cleaning screw (9) corresponding to the side of the outer curved surface unit template (2) opposite to the second inner curved surface unit template (3) and the first inner curved surface unit template (1) is fixedly connected with a fixing sleeve (30).

3. The formwork system for a double-curved surface beam of plain concrete according to claim 2, characterized in that: A sleeve groove (31) is provided in the center of the fixing sleeve (30), a fixing plate (32) is provided on one side of the fixing sleeve (30), the fixing plate (32) is sleeved with the water-cleaning screw (9), a clamping plate (33) is fixedly connected to the center of one side of the fixing plate (32), one side of the clamping plate (33) penetrates into the interior of the sleeve groove (31) and is sleeved with the water-cleaning screw (9), a threaded groove (34) is provided on one side of the fixing sleeve (30), a fixing bolt (35) is threadedly connected to the other side of the fixing plate (32), one side of the fixing bolt (35) penetrates into the interior of the threaded groove (34) and is threadedly connected to the threaded groove (34).

4. The formwork system for a double-curved surface beam of plain concrete according to claim 1, characterized in that: A reinforcing rod (36) is provided between the two curved unit templates (4) arranged on the left and right and corresponding to the two water-clearing screws (9), and both sides of the reinforcing rod (36) respectively penetrate the outside of the first inner curved unit template (1), the outer curved unit template (2) and the second inner curved unit template (3).

5. The formwork system for a double-curved surface beam of plain concrete according to claim 1, characterized in that: A plurality of template secondary keels (8) are fixedly assembled between the outer curved surface unit template (2) and the arc-shaped unit template (4), between the first inner curved surface unit template (1) and the arc-shaped unit template (4), and between the second inner curved surface unit template (3) and the arc-shaped unit template (4).

6. The formwork system for a double-curved surface beam of plain concrete according to claim 1, characterized in that: The two arc-shaped unit templates (4) arranged on the left and right are fixedly equipped with a plurality of shaping keels (5) on the opposite sides thereof, and the positioning blocks (6) are fixedly connected below the corresponding shaping keels (5) on the opposite sides of the two arc-shaped unit templates (4) arranged on the left and right.

7. The formwork system for a double-curved surface beam of plain concrete according to claim 1, characterized in that: An annular slide plate (14) is fixedly connected to the inner wall of the annular groove (13), and the inner wall of the annular slide plate (14) contacts the end face of the water-cleaning screw (9). An operating plate (19) is fixedly connected to the outer surface of the rotating plate (12).

8. The formwork system for a double-curved surface beam of plain concrete according to claim 1, characterized in that: The outer end of one side of the built-in circular plate (20) is fixedly connected to the extension fixing plate (21), one side of the extension fixing plate (21) penetrates into the interior of the groove (10), and one side of the top and bottom of the extension fixing plate (21) are fixedly connected to the limiting slide plate (24). The inner side of the water-cleaning screw (9) corresponding to the top and bottom of the groove (10) is provided with a limiting groove (23), and the side of the limiting slide plate (24) away from the extension fixing plate (21) penetrates into the interior of the limiting groove (23) and is slidably connected to the limiting groove (23). A second through hole (22) is provided at the center of the built-in circular plate (20), and the adjusting rod (17) is located inside the second through hole (22).

9. A method for manufacturing a formwork system for a double-curved surface beam of plain concrete according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: First, assemble the first inner curved surface unit template (1), the outer curved surface unit template (2), the second inner curved surface unit template (3) and the bottom plate template (7) according to the design requirements, ensure that the templates are tightly spliced, and install the arc unit template (4) on the inner side of the first inner curved surface unit template (1), the outer curved surface unit template (2) and the second inner curved surface unit template (3), respectively, to ensure that the arc unit template 4 matches the design shape of the hyperbolic beam; Step 2: Install a water-cleaning screw (9) at the top position and the bottom position between the left and right arc-shaped unit templates (4), respectively. The water-cleaning screw (9) penetrates the outside of the first inner curved unit template (1), the outer curved unit template (2) and the second inner curved unit template (3). Rotate the rotating plate (12) inside the water-cleaning screw (9). The annular groove (13) on the rotating plate (12) is engaged with the center position of the water-cleaning screw (9) to realize the rotation of the rotating plate (12). A through hole (15) is opened in the center of the rotating plate (12). The through hole (15) ) are provided with internal threads (16) on both sides, and an external thread (18) is provided on one side of the surface of the adjusting rod (17). The external thread (18) is threadedly connected to the internal thread (16). By rotating the adjusting rod (17), it can achieve its in-and-out movement in the through hole (15). The movement of the adjusting rod (17) is converted into the lateral movement of the external annular plate (25) through the built-in circular plate (20) and the moving block (26). The anti-slip soft block (29) on the external annular plate (25) contacts the inner wall of the arc unit template (4), thereby achieving the fastening and fine adjustment of the arc unit template (4); Step three, installing a fixing sleeve (30) on the outer side of the water-clearing screw (9) on the opposite side of the outer curved unit template (2), the second inner curved unit template (3) and the first inner curved unit template (1), sleeve the fixing plate (32) and the water-clearing screw (9), and thread the fixing plate (32) and the fixing sleeve (30) with fixing bolts (35) to fix the position of the water-clearing screw (9), installing a reinforcing rod (36) between the left and right arc-shaped unit templates (4) and between the two water-clearing screws (9) to enhance the overall stability of the template system, installing a template secondary keel (8) between the outer curved unit template (2) and the arc-shaped unit template (4), between the first inner curved unit template (1) and the arc-shaped unit template (4), and between the second inner curved unit template (3) and the arc-shaped unit template (4), to improve the rigidity and anti-deformation ability of the template system; Step 4: Install the shaping keel (5) on the opposite sides of the left and right arc-shaped unit templates (4) to ensure that the shape of the arc-shaped unit template (4) is stable, and install the positioning block (6) below the shaping keel (5) to ensure that the template system is accurately positioned during the pouring process. According to the design requirements, pour the plain concrete inside the template system.

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