A formwork support frame for brick wall construction column construction

Abstract

The application discloses a formwork support for brick wall construction column construction, which comprises two formwork structures, the two formwork structures are respectively located on the two sides of the construction column, each formwork structure comprises a plurality of back plates and a supporting base, the plurality of back plates are sequentially distributed along the longitudinal direction, and the two adjacent back plates are detachably connected through a connecting structure, the supporting base is connected to the outer side of the bottom of the lowermost back plate, and at least one adjustable inclined support is arranged between each back plate and the supporting base. The angle of the inclined support base is adjusted through plug-in type, and the length-adjustable inclined support can be combined, so that the different construction column sizes can be flexibly adapted; the aluminum alloy back plate and the bolt splicing structure are matched, the anti-blast formwork capacity and the turnover efficiency are greatly improved, and the formwork support has the beneficial effects of high construction efficiency and reusable components.

Description

Technical Field

[0001] This invention relates to the technical field of building construction, and in particular to a formwork support for the construction of brick wall structural columns. Background Technology

[0002] In masonry structure construction, the formwork and reinforcement of structural columns are crucial factors in determining the quality of concrete forming.

[0003] Currently, the construction of structural columns mainly employs two methods: wooden formwork and brick formwork. Wooden formwork suffers from drawbacks such as a low turnover rate (typically only 3 to 5 times), susceptibility to deformation and cracking after exposure to moisture, insufficient rigidity and stability, and a tendency to bulge during pouring. Reinforcing with wooden formwork often requires drilling holes in the brick wall, resulting in localized weaknesses in the wall structure. Brick formwork, on the other hand, presents challenges such as bricks absorbing water, affecting concrete strength; limited mortar bonding strength, making it difficult to withstand lateral concrete pressure; susceptibility to grout leakage; long construction periods; and inconvenient parameter adjustments. Summary of the Invention

[0004] In view of the above-mentioned problems of existing technologies, the aim is to provide a formwork support for the construction of brick wall structural columns.

[0005] The specific technical solution is as follows: A formwork support for the construction of brick wall structural columns includes: two template structures, each located on one side of the structural column, and each template structure comprising: A plurality of back plates are arranged longitudinally in sequence, and adjacent back plates are detachably connected by a connecting structure. A support base is connected to the outer side of the bottom of the lowest back plate. At least one adjustable brace is provided between each back plate and the support base. The length of the adjustable brace is adjustable, and one end of the adjustable brace abuts against the back plate, while the other end is adjustable to rest on the support base, moving closer to or further away from the back plate. In this design, a tie rod is provided between the two back plates facing each other in the two template structures. The tie rod passes through the two back plates, and both ends of the tie rod are threaded with fixing nuts. By tightening the two fixing nuts, the two fixing nuts are respectively pressed against the outer side of the two back plates, thereby locking and fixing the two back plates.

[0006] As a further improvement and optimization of this solution, each of the back plates is provided with a number of ribs on its outer side. The number of ribs are distributed at equal intervals along the length direction of the back plate, and each rib is provided along the width direction of the back plate. One end of the adjustable diagonal brace abuts against the connection between the bottom of one of the ribs and the back plate.

[0007] As a further improvement and optimization of this solution, a pad is provided between several of the ribs, the pull screw passes through the pad, and the fixing nut is tightly abutted against the outer side of the pad for limitation.

[0008] As a further improvement and optimization of this solution, one end of the adjustable diagonal brace has a limiting plate, which abuts against the connection between the bottom of one of the ribs and the back plate, and the other end of the adjustable diagonal brace has a support plate with a rotating hole. The support base includes two guide rails and a support rod. The two guide rails are spaced apart along the length of the back plate. Each guide rail has a plurality of positioning holes evenly distributed along its own length. The support rod is inserted into the positioning holes corresponding to the positions on the two guide rails. The support plate is rotatably sleeved on the outside of the support rod through a rotating hole. By inserting the support rod into the positioning holes at different positions, the horizontal distance between the support rod and the back plate can be adjusted, thereby adjusting the support angle of the adjustable diagonal brace. The two guide rails are connected by at least two connecting brackets.

[0009] As a further improvement and optimization of this solution, the adjustable diagonal brace includes: two diagonal bracing rods and a rotating sleeve. One end of each of the two diagonal bracing rods has a threaded section, the threads of the two threaded sections are in opposite directions, and are respectively fitted into the two ends of the rotating sleeve. The other ends of the two diagonal bracing rods are respectively connected to the limiting plate and the support plate.

[0010] As a further improvement and optimization of this solution, at least two adjustable diagonal braces are provided between each back plate and the support base, and the two adjustable diagonal braces are distributed on both sides of the back plate along the width direction of the back plate.

[0011] As a further improvement and optimization of this solution, the connection structure includes: Two connecting plates are respectively located between the two back plates. Each connecting plate is provided with a docking hole. The two connecting plates are docked and fixed by a pin inserted into the docking hole.

[0012] As a further improvement and optimization of this solution, both the back plate and the corrugated plate are made of aluminum alloy, and the corrugated plate and the back plate are welded together.

[0013] As a further improvement and optimization of this solution, the two rotating sleeves of the two adjustable diagonal braces are connected by a synchronization mechanism, which drives the two rotating sleeves to rotate synchronously. The synchronization mechanism includes: Mounting bracket, on which the two rotating sleeves are rotatably mounted; Two worm gears are coaxially sleeved in the middle of the two rotating sleeves. A drive shaft is rotatably mounted on the mounting bracket and is perpendicular to the axis of the rotating sleeve; Two worm gears are coaxially sleeved outside the drive shaft, and each worm gear meshes with a worm wheel. A handle is connected to one end of the drive shaft. By rotating the handle, the drive shaft is rotated, and the two worm gears and two worm wheels drive the two rotating sleeves to rotate synchronously.

[0014] As a further improvement and optimization of this solution, The mounting bracket includes two mounting plates and two side plates. The two side plates are respectively bolted between the two mounting plates and located at both ends of the mounting plates. The drive shaft is rotatably mounted on the two side plates. The rotating sleeve can rotatably pass through the two mounting plates, and each rotating sleeve has two limiting nuts threaded on its exterior, with the two limiting nuts respectively limiting and abutting against the opposite ends of the two mounting plates.

[0015] The positive effects of the above technical solution compared with the existing technology are: This invention's formwork support abandons the traditional wooden formwork and brick mold, adopting a modular splicing back panel structure, making it lightweight and extremely quick to install and disassemble. Secondly, the support base in the diagonal bracing system is equipped with a guide rail with adjustment holes. By changing the insertion position of the support rod, the angle and stress point of the diagonal bracing can be flexibly adjusted, greatly improving the adaptability of the formwork support to structural columns of different sizes. In addition, the connection between the diagonal bracing and the back panel is equipped with a special limiting structure, which can concentrate the force at the root of the rib plate, significantly improving the resistance to lateral pressure and preventing formwork bursting. Finally, all components of this formwork support can be reused, greatly saving engineering costs and completely avoiding the quality hazards caused by drilling holes in the brick wall. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a formwork support frame for the construction of brick wall structural columns according to the present invention; Figure 2 This is a schematic diagram of the support base of a formwork frame for the construction of brick wall structural columns according to the present invention. Figure 3 This is a schematic diagram of the adjustable diagonal brace of a formwork support for the construction of brick wall structural columns according to the present invention. Figure 4 This is a schematic diagram of the synchronous mechanism of a formwork support frame for the construction of brick wall structural columns according to the present invention. Figure 5 This is a schematic diagram of the installation frame of a formwork support for the construction of brick wall structural columns according to the present invention. In the attached diagram: 1. Template structure; 2. Tie rod; 3. Fixing nut; 4. Synchronization mechanism; 11. Back plate; 12. Rib plate; 13. Pad plate; 14. Adjustable diagonal brace; 15. Support base; 16. Support rod; 17. Connecting plate; 141. Rotating sleeve; 142. Diagonal brace; 143. Support plate; 144. Limiting plate; 151. Guide rail; 152. Connecting frame; 1511. Positioning hole; 171. Docking hole; 41. Mounting frame; 42. Drive rod; 43. Worm gear; 44. Worm; 45. Handle; 46. Limiting nut; 411. Mounting plate; 412. Side plate. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Figure 1 This is a schematic diagram of a formwork support frame for the construction of brick wall structural columns according to the present invention; Figure 2 This is a schematic diagram of the support base of a formwork frame for the construction of brick wall structural columns according to the present invention. Figure 3 This is a schematic diagram of the adjustable diagonal brace of a formwork support for the construction of brick wall structural columns according to the present invention. Figure 4 This is a schematic diagram of the synchronous mechanism of a formwork support frame for the construction of brick wall structural columns according to the present invention. Figure 5 This is a schematic diagram of the installation frame of a formwork support for the construction of brick wall structural columns according to the present invention. Figure 1-5 The diagram illustrates a preferred embodiment of a formwork support for the construction of brick wall structural columns, comprising: two formwork structures 1, located on opposite sides of the structural column; each formwork structure 1 including: a plurality of back plates 11 and a support base 15; the back plates 11 are arranged longitudinally in sequence, and adjacent back plates 11 are detachably connected by a connecting structure; the support base 15 is connected to the outer side of the bottom of the lowest back plate 11; and at least one adjustable diagonal brace is provided between each back plate 11 and the support base 15. 14. The length of the adjustable diagonal brace 14 can be adjusted, and one end of the adjustable diagonal brace 14 abuts against the back plate 11, while the other end can be adjusted to be closer to or further away from the back plate 11 and supported on the support base 15. In the two template structures 1, a tie rod 2 is provided between the two back plates 11 facing each other. The tie rod 2 passes through the two back plates 11, and both ends of the tie rod 2 are threaded to the fixing nuts 3. By tightening the two fixing nuts 3, the two fixing nuts 3 are respectively pressed against the outer side of the two back plates 11, thereby locking and fixing the two back plates 11.

[0021] Specifically, a set of template structure 1 is installed on both the left and right sides of the structural column. Each set of template structure 1 is composed of several back plates 11 arranged longitudinally and spliced ​​together. Adjacent back plates 11 are detachably connected by a connecting structure. To prevent the back plates 11 from shifting outwards during pouring, tie rods 2 are inserted between the corresponding back plates 11 on both sides. The tie rods 2 run across the structural column, and each end of them is threaded with a fixing nut 3. By tightening the fixing nuts 3, the operators can directly press the fixing nuts 3 against the outer wall of the back plate 11. The tie rods 2 lock the back plates 11 on both sides, thereby forming a stable closed mold cavity on the outside of the structural column, effectively overcoming the disadvantages of traditional wooden molds that are prone to deformation and failure.

[0022] Furthermore, as a preferred embodiment, each back plate 11 has a plurality of ribs 12 on its outer side. These ribs 12 are evenly spaced along the length of the back plate 11, and each rib 12 extends along the width of the back plate 11. Specifically, these ribs 12 are evenly spaced along the length of the back plate 11, and each rib 12 extends along the width of the back plate 11. The upper end of the adjustable diagonal brace 14 does not directly abut against the smooth surface of the back plate 11, but precisely abuts against the connection point where the bottom of one of the ribs 12 intersects with the back plate 11. This design directly transmits the lateral pressure from the diagonal brace to the high-rigidity reinforcing rib, greatly improving the back plate 11's ability to resist concrete lateral pressure and deformation.

[0023] One end of the adjustable diagonal brace 14 abuts against the bottom of one of the rib plates 12 at the connection point with the back plate 11.

[0024] Furthermore, in a preferred embodiment, a pad 13 is provided between several ribs 12, the tie rod 2 passes through the pad 13, and the fixing nut 3 is tightly abutted against the outer side of the pad 13 for limiting. Specifically, the tie rod 2 directly passes through the back plate 11 and the pad 13, and the fixing nut 3 is tightened and locked on the outer side of the pad 13. The pad 13 significantly increases the bearing area between the end of the tie rod and the template structure 1, preventing the aluminum from being damaged due to excessive local pressure during the tightening process. Furthermore, as a preferred embodiment, one end of the adjustable diagonal brace 14 has a limiting plate 144, which abuts against the connection between the bottom of one of the rib plates 12 and the back plate 11. The other end of the adjustable diagonal brace 14 has a support plate 143, which has a rotating hole. The support base 15 includes two guide rails 151 and a support rod 16. The two guide rails 151 are spaced apart along the length of the back plate 11. Each guide rail 151 has a plurality of positioning holes 1511 evenly distributed along its own length. The support rod 16 is inserted into the corresponding positioning holes 1511 on the two guide rails 151. The support plate 143 is rotatably sleeved on the outside of the support rod 16 through a rotating hole. By inserting the support rod 16 into the positioning holes 1511 at different positions, the horizontal distance between the support rod 16 and the back plate 11 can be adjusted, thereby adjusting the support angle of the adjustable diagonal brace 14. The two guide rails 151 are connected by at least two connecting plates 17. Specifically, the bottom end of the adjustable diagonal brace 14 has a support plate 143 with a rotating hole. The support base 15 includes two parallel guide rails 151. Each guide rail 151 has a plurality of adjustment holes, i.e., positioning holes 1511, arranged along its length. The guide rails 151 are fixed together by a connecting bracket 152. The support rod 16 can be inserted into any of the opposing adjustment holes on the two guide rails 151, and the support plate 143 is rotatably sleeved on the outside of the support rod 16. The operator can simply pull out the support rod 16 and reinsert it into the horizontal adjustment hole at different positions to intuitively change the horizontal distance between the support rod 16 and the bottom of the back plate 11, thereby precisely adjusting the tilt angle of the adjustable diagonal brace 14 to adapt to different construction stress environments.

[0025] Furthermore, in a preferred embodiment, the adjustable diagonal brace 14 includes two diagonal brace rods 142 and a rotating sleeve 141. One end of each of the two diagonal brace rods 142 has a threaded section with opposite thread directions, and they are respectively fitted into both ends of the rotating sleeve 141. The other ends of the two diagonal brace rods 142 are respectively connected to a limiting plate 144 and a support plate 143. Specifically, the adjustable diagonal brace 14 includes two diagonal brace rods 142 and a rotating sleeve 141. The opposite ends of the two diagonal brace rods 142 have threaded sections with opposite thread directions. The two diagonal brace rods 142 are screwed into both ends of the rotating sleeve 141. When the operator rotates the sleeve 141, due to the opposite thread directions, the two diagonal brace rods 142 will simultaneously retract inward or extend outward, thereby changing the overall length of the diagonal brace. With the bottom angle adjustment, the top limiting plate 144 can be precisely and firmly pressed against the connection between the rib plate 12 and the back plate 11.

[0026] Furthermore, as a preferred embodiment, at least two adjustable diagonal braces 14 are provided between each back plate 11 and the support base 15, with the two adjustable diagonal braces 14 distributed on both sides of the back plate 11 along its width direction. Specifically, these two adjustable diagonal braces 14 are symmetrically distributed on the left and right sides of the back plate 11 in its width direction. The double diagonal bracing not only effectively balances the eccentric lateral pressure that may be generated during concrete pouring, but also significantly improves the redundancy and overturning stability of the formwork system, ensuring construction safety during large-scale pouring operations.

[0027] Furthermore, as a preferred embodiment, the connection structure includes two connecting plates 17, which are respectively located between two back plates 11. Each connecting plate 17 is provided with a mating hole 171. The two connecting plates 17 are mated and fixed by a pin inserted into the mating hole 171. Specifically, the junction ends of two adjacent back plates 11 are respectively provided with connecting plates 17, and each connecting plate 17 is provided with a mating hole 171 of matching size. When mating, the upper and lower connecting plates 17 are fitted together, and the pin is inserted into the mating hole 171 to complete the locking. This pin connection method is not only easy to operate, but also has extremely high disassembly and assembly efficiency. After the pouring is completed and the formwork is removed, the back plate 11 can be disassembled simply by pulling out the pin, which facilitates workers to quickly transfer it to the next structural column for reuse.

[0028] Furthermore, as a preferred embodiment, both the back plate 11 and the rib plate 12 are made of aluminum alloy, and the rib plate 12 is welded to the back plate 11. Since this formwork support needs to be used repeatedly in various construction environments over a long period, both the back plate 11 and the rib plate 12 are made of aluminum alloy, and the rib plate 12 is welded to the back plate 11. Aluminum alloy has low density, high strength, and strong corrosion resistance, effectively solving the problem of cracking and deformation caused by water absorption in wooden formwork, significantly increasing the number of times components can be reused, greatly reducing the generation of construction waste, and meeting the requirements of green building construction.

[0029] Furthermore, in a preferred embodiment, the two rotating sleeves 141 of the two adjustable diagonal braces 14 are connected by a synchronization mechanism 4. The synchronization mechanism 4 drives the two rotating sleeves 141 to rotate synchronously. The synchronization mechanism 4 includes: a mounting frame 41, two worm gears 43, two worms 44, a drive shaft 42, and a handle 45. The two rotating sleeves 141 are rotatably mounted on the mounting frame 41. The two worm gears 43 are coaxially sleeved on the middle of the two rotating sleeves 141. The drive shaft 42 is rotatably mounted on the mounting frame 41 and is perpendicular to the axial direction of the rotating sleeves 141. The two worms 44 are coaxially sleeved on the outside of the drive shaft 42, and the two worms 44 are respectively engaged with the two worm gears 43. The handle 45 is connected to one end of the drive shaft 42. By rotating the handle 45, the drive shaft 42 is rotated, and the two rotating sleeves 141 are driven to rotate synchronously through the two worms 44 and the two worm gears 43. Specifically, the synchronization mechanism 4 is equipped with a mounting bracket 41, on which the rotating sleeves 141 of the two diagonal braces are mounted and can rotate freely. The core transmission components of this mechanism are two sets of worm gears. The two worm gears 43 are fixedly sleeved in the middle of the two rotating sleeves 141; the worms 44 are coaxially mounted on a drive shaft 42 perpendicular to the rotating sleeves 141, and the two worms 44 are respectively engaged with the corresponding worm gears 43; a handle 45 is connected to the end of the drive shaft 42. When the worker turns the handle 45, the drive shaft 42 drives the two worms 44 to rotate synchronously, which in turn drives the two worm gears 43 and the two rotating sleeves 141 to rotate synchronously and equally, completing the synchronous extension and retraction of the two diagonal braces in one operation. Utilizing the self-locking characteristics of the worm gears, it can also prevent the diagonal braces from sliding backward under force, making it highly practical.

[0030] Furthermore, in a preferred embodiment, the mounting frame 41 includes two mounting plates 411 and two side plates 412. The side plates 412 are respectively bolted between the two mounting plates 411 and located at both ends of the mounting plates 411. The drive shaft 42 is rotatably mounted on the side plates 412. A rotating sleeve 141 rotatably passes through the two mounting plates 411, and each rotating sleeve 141 has two limiting nuts 46 threaded on its exterior. The two limiting nuts 46 respectively limit and abut against the opposite ends of the two mounting plates 411. Specifically, the mounting frame 41 includes two parallel mounting plates 411 and two side plates 412. The two side plates 412 are respectively bolted to both ends of the two mounting plates 411 to form a stable frame. The drive shaft 42 is rotatably mounted between the two side plates 412. Two rotating sleeves 141 pass through two mounting plates 411, and limit nuts 46 are threadedly fixed to the opposite ends of each rotating sleeve 141 on the outside of the two mounting plates 411. The limit nuts 46 abut and lock against the back side of the mounting plates 411. This structure achieves axial limiting of the rotating sleeves 141, ensuring that the rotating sleeves 141 can only rotate in place within the mounting bracket 41 and cannot undergo axial movement, further ensuring the stability of the meshing clearance between the worm 44 and the worm wheel 43, and improving the transmission reliability of the synchronization mechanism 4.

[0031] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A formwork support for the construction of brick wall structural columns, characterized in that, include: Two template structures are provided, each located on one side of the structural column. Each template structure includes: A plurality of back plates are arranged longitudinally in sequence, and adjacent back plates are detachably connected by a connecting structure. A support base is connected to the outer side of the bottom of the lowest back plate. At least one adjustable brace is provided between each back plate and the support base. The length of the adjustable brace is adjustable, and one end of the adjustable brace abuts against the back plate, while the other end is adjustable to rest on the support base, moving closer to or further away from the back plate. In this design, a tie rod is provided between the two back plates facing each other in the two template structures. The tie rod passes through the two back plates, and both ends of the tie rod are threaded with fixing nuts. By tightening the two fixing nuts, the two fixing nuts are respectively pressed against the outer side of the two back plates, thereby locking and fixing the two back plates.

2. The formwork support for the construction of brick wall structural columns according to claim 1, characterized in that, Each of the back plates has a plurality of ribs on its outer side, the plurality of ribs being equally spaced along the length of the back plate and each rib being arranged along the width of the back plate. One end of the adjustable diagonal brace abuts against the connection between the bottom of one of the ribs and the back plate.

3. The formwork support for the construction of brick wall structural columns according to claim 2, characterized in that, A pad is provided between several of the aforementioned ribs, the pull screw passes through the pad, and the fixing nut is tightly abutted against the outer side of the pad for limitation.

4. The formwork support for the construction of brick wall structural columns according to claim 2, characterized in that, One end of the adjustable diagonal brace has a limiting plate, which abuts against the connection between the bottom of one of the ribs and the back plate. The other end of the adjustable diagonal brace has a support plate with a rotating hole. The support base includes two guide rails and a support rod. The two guide rails are spaced apart along the length of the back plate. Each guide rail has a plurality of positioning holes evenly distributed along its own length. The support rod is inserted into the positioning holes corresponding to the positions on the two guide rails. The support plate is rotatably sleeved on the outside of the support rod through a rotating hole. By inserting the support rod into the positioning holes at different positions, the horizontal distance between the support rod and the back plate can be adjusted, thereby adjusting the support angle of the adjustable diagonal brace. The two guide rails are connected by at least two connecting brackets.

5. The formwork support for the construction of brick wall structural columns according to claim 4, characterized in that, The adjustable diagonal brace includes two diagonal bracing rods and a rotating sleeve. One end of each of the two diagonal bracing rods has a threaded section, the threads of the two threaded sections are in opposite directions, and are respectively fitted inside the two ends of the rotating sleeve. The other ends of the two diagonal bracing rods are respectively connected to the limiting plate and the support plate.

6. The formwork support for the construction of brick wall structural columns according to claim 5, characterized in that, At least two adjustable diagonal braces are provided between each of the back plates and the support base, and the two adjustable diagonal braces are distributed on both sides of the back plate along the width direction of the back plate.

7. The formwork support for the construction of brick wall structural columns according to claim 1, characterized in that, The connection structure includes: Two connecting plates are respectively located between the two back plates. Each connecting plate is provided with a docking hole. The two connecting plates are docked and fixed by a pin inserted into the docking hole.

8. The formwork support for the construction of brick wall structural columns according to claim 1, characterized in that, Both the back plate and the corrugated plate are made of aluminum alloy, and the corrugated plate is welded to the back plate.

9. The formwork support for the construction of brick wall structural columns according to claim 6, characterized in that, The two rotating sleeves of the two adjustable diagonal braces are connected by a synchronization mechanism, which drives the two rotating sleeves to rotate synchronously. The synchronization mechanism includes: Mounting bracket, on which the two rotating sleeves are rotatably mounted; Two worm gears are coaxially sleeved in the middle of the two rotating sleeves. A drive shaft is rotatably mounted on the mounting bracket and is perpendicular to the axis of the rotating sleeve; Two worm gears are coaxially sleeved outside the drive shaft, and each worm gear meshes with a worm wheel. A handle is connected to one end of the drive shaft. By rotating the handle, the drive shaft is rotated, and the two worm gears and two worm wheels drive the two rotating sleeves to rotate synchronously.

10. The formwork support for the construction of brick wall structural columns according to claim 9, characterized in that, The mounting bracket includes two mounting plates and two side plates. The two side plates are respectively bolted between the two mounting plates and located at both ends of the mounting plates. The drive shaft is rotatably mounted on the two side plates. The rotating sleeve can rotatably pass through the two mounting plates, and each rotating sleeve has two limiting nuts threaded on its exterior, with the two limiting nuts respectively limiting and abutting against the opposite ends of the two mounting plates.

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