Small-space inner formwork closed erecting structure and installation method

Abstract

The invention discloses a small-space inner formwork closed erecting structure and an installation method, and belongs to the technical field of building construction technologys.The small-space inner formwork closed erecting structure comprises an arc-shaped formwork and an outer formwork assembly, the outer formwork assembly comprises four aluminum alloy formwork bodies, the four aluminum alloy formwork bodies define a square column-shaped space, and the square column-shaped space is provided with an outer formwork. The arc-shaped formwork is arranged among the four aluminum alloy formwork bodies, a first bottom plate and a second bottom plate are arranged on the aluminum alloy formwork bodies, receding grooves for receding the arc-shaped formwork are formed in the first bottom plate and the second bottom plate, and the first bottom plate is connected with the second bottom plate through bolts. The first bottom plate or the second bottom plate is fixedly connected with a plurality of baffles, the baffles can abut against the aluminum alloy formwork body, and the first bottom plate and the second bottom plate are each provided with a plurality of guide mechanisms used for guiding the arc-shaped formwork. The possibility that the inner wall of the concrete is damaged can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction technology, and in particular to a closed support structure and installation method of a template in a small space. Background Art

[0002] At present, the building formwork is a temporary supporting structure, which is made according to the design requirements to shape the concrete structure and components according to the specified position and geometric size, maintain its correct position, and bear the deadweight of the building formwork and the external load acting on it. The purpose of the formwork project is to ensure the quality and construction safety of the concrete project, speed up the construction progress and reduce the project cost.

[0003] The prior art can refer to the Chinese patent with the authorization announcement number CN104032952A, which discloses a small space cylindrical formwork and a construction method thereof, including three arc-shaped formworks, two adjacent arc-shaped formworks overlap each other, and the three arc-shaped formworks surround a cylindrical space; the small space cylindrical formwork also includes a central axis, a first expansion and contraction device and a second expansion and contraction device, and a formwork support frame is provided on the inner wall of each arc-shaped formwork, the first expansion and contraction device is hinged to the upper part of the formwork support frame, and the second expansion and contraction device is hinged to the formwork support frame. The lower part of the plate support frame is hinged; during construction, the space surrounded by the three arc-shaped templates is first miniaturized by rotating the central axis, and the central axis is rotated, at which time the three arc-shaped templates move toward the center, and then the three arc-shaped templates are hoisted as a whole to the position of the garbage chute to be constructed, and then the cylindrical space surrounded by the three arc-shaped templates is expanded by rotating the central axis, and the central axis is rotated, at which time the three arc-shaped templates move to the surroundings until a cylindrical space is formed, and concrete is poured outside the garbage chute, and finally the central axis is rotated to reduce the space surrounded by the three arc-shaped templates, and the templates are demoulded and hoisted away.

[0004] However, when the curved formwork is finally lifted off by a crane, the curved formwork may shake and collide with the inner wall of the concrete that has just been poured, thereby increasing the possibility of damage to the inner wall of the concrete. Summary of the invention

[0005] In order to reduce the possibility of damage to the inner wall of concrete, on the one hand, the present application provides a closed support structure for a formwork in a small space, which adopts the following technical solutions: A closed supporting structure for a template in a small space comprises an arc-shaped template and an external template assembly, wherein the external template assembly comprises four aluminum alloy template bodies, wherein the four aluminum alloy template bodies enclose a square columnar space, and the arc-shaped template is arranged between the four aluminum alloy template bodies, and wherein the aluminum alloy template body is provided with a first bottom plate and a second bottom plate, wherein the first bottom plate and the second bottom plate are both provided with a making way groove for making way for the arc-shaped template, and the first bottom plate is connected to the second bottom plate by bolts; a plurality of baffles are fixedly connected to the first bottom plate or the second bottom plate, wherein the baffles can abut against the aluminum alloy template body, and a plurality of guide mechanisms for guiding the arc-shaped template are both provided on the first bottom plate and the second bottom plate.

[0006] By adopting the above technical solution, after the concrete pouring is completed, the first bottom plate and the second bottom plate are placed on the aluminum alloy formwork body, and a plurality of baffles are made to abut against the outer wall of the aluminum alloy formwork body, and then the first bottom plate and the second bottom plate are connected by bolts. When the concrete needs to be lifted away from the arc formwork in the vertical direction by a crane after solidification, the arc formwork can be guided by setting a plurality of guide mechanisms, so that the arc formwork can move linearly upward in the vertical direction, thereby reducing the possibility of damage to the inner wall of the concrete.

[0007] Preferably, the guide mechanism includes a base, which is mounted on the first bottom plate or the second bottom plate, a first slider is slidably arranged on the base, a first guide wheel is arranged on the first slider, and the first guide wheel can abut against the arc template; a second slider is slidably arranged on the base, a second guide wheel is arranged on the second slider, and the second guide wheel can abut against the arc template, a first driving component for driving the first slider to move is arranged on the base, and a second driving component for driving the second slider to move is arranged on the base.

[0008] By adopting the above technical solution, when the arc template needs to be guided, the first driving component is first used to drive the first slider to move toward the direction close to the arc template, and the first slider drives the first guide wheel to abut against the arc template. Then, the second driving component is used to drive the second slider to move toward the direction close to the arc template, and the second slider drives the second guide wheel to abut against the arc template, thereby facilitating the guiding of the arc template.

[0009] Preferably, the first driving assembly includes a first spring, a first sliding groove is provided on the base, the first slider is slidably arranged on the inner wall of the first sliding groove, the first spring is arranged on the inner wall of the first sliding groove, one end of the first spring is fixedly connected to the first slider, and the other end of the first spring is fixedly connected to the inner wall of the first sliding groove, and a fixing component for fixing the first slider is provided on the base.

[0010] By adopting the above technical solution, when the arc-shaped template shrinks toward the center, the first spring is in a compressed state, and the first slider moves toward the direction close to the arc-shaped template under the elastic force of the first spring. The first slider drives the first guide wheel to abut against the arc-shaped template. At this time, the first slider is fixed by a fixing component, so that the first guide wheel can abut against the arc-shaped template.

[0011] Preferably, the fixing component includes a fixing block, a second sliding groove is provided on the first sliding block, the fixing block is slidably arranged on the inner wall of the second sliding groove, a second spring is provided in the second sliding groove, one end of the second spring is fixedly connected to the inner wall of the second sliding groove, and the other end of the second spring is fixedly connected to the fixing block, a first fixing groove and a second fixing groove are provided on the first bottom plate or the second bottom plate, the fixing block can be plugged into the first fixing groove, the fixing block can be plugged into the second fixing groove, and a moving part for driving the fixing block to move is provided on the first sliding block.

[0012] By adopting the above technical solution, when the first slider drives the first guide wheel to abut against the arc-shaped template, the fixed block is aligned with the first fixed groove, the second spring is in a compressed state, and the fixed block is inserted into the inner wall of the first fixed groove under the elastic force of the second spring, thereby facilitating the fixing of the first slider.

[0013] Preferably, the moving member comprises a moving rod, the moving rod is arranged to penetrate the first sliding block, the moving rod is fixedly connected to the fixing block, and one end of the moving rod away from the fixing block is fixedly connected to a handle.

[0014] By adopting the above technical solution, when it is necessary to drive the fixed block to separate from the first fixed groove or the second fixed groove, the operator can manually drive the handle to move upward in the vertical direction, the handle drives the moving rod to move upward in the vertical direction, and the moving rod drives the fixed block to move upward in the vertical direction, thereby facilitating driving the fixed block to separate from the first fixed groove or the second fixed groove.

[0015] Preferably, the second driving assembly includes a lead screw, a third sliding groove is provided on the base, the second slider is slidably arranged on the inner wall of the third sliding groove, one end of the lead screw is rotatably arranged on the inner wall of the third sliding groove, the second slider is threadably matched with the lead screw, the cross-sections of the second slider and the third sliding groove are both squares with equal areas, and a rotating component for driving the lead screw to rotate is provided on the base.

[0016] By adopting the above technical solution, when it is necessary to drive the second slider to move toward the direction close to the arc template, the lead screw is driven to rotate by the rotating component, thereby facilitating driving the second slider to move toward the direction close to the arc template.

[0017] Preferably, the rotating component includes a torsion spring, one end of which is fixedly connected to the lead screw, and the other end of which is fixedly connected to the inner wall of the third sliding groove, the inner wall of the third sliding groove is provided with a fourth sliding groove, and the inner wall of the fourth sliding groove is slidingly provided with a limiting block, a limiting hole is provided on the lead screw, and the limiting block can be inserted into the inner wall of the limiting hole, and a separation component for driving the limiting block to separate from the limiting hole is provided in the base.

[0018] By adopting the above technical solution, when it is necessary to drive the lead screw to rotate, the limit block is first driven to separate from the limit hole through the separation member. At this time, the torsion spring is in a compressed state, so that the lead screw rotates under the elastic force of the torsion spring.

[0019] Preferably, the separation member includes a connecting rod, a linkage groove is provided on the inner wall of the first sliding groove, the linkage groove is connected to the fourth sliding groove, the connecting rod is arranged in the linkage groove, one end of the connecting rod is hinged to the first sliding block, and the other end of the connecting rod is hinged to the limit block.

[0020] By adopting the above technical solution, when the first slider moves toward the direction close to the arc template, under the cooperation of the connecting rod, the first slider drives the limit block to move downward in the vertical direction, thereby facilitating the separation of the limit block from the limit hole.

[0021] The present application provides a method for installing a closed support structure in a small space, which adopts the following technical solution: S1: After the concrete pouring is completed, the first bottom plate and the second bottom plate are placed on the aluminum alloy formwork body, and the plurality of baffles are abutted against the outer wall of the aluminum alloy formwork body, and then the first bottom plate and the second bottom plate are connected by bolts, and the handle is manually driven to move upward to separate the fixing block from the second fixing groove, and at this time, the first guide wheel abuts against the arc-shaped formwork; S2: When the concrete needs to be lifted away from the arc formwork in the vertical direction by a crane after solidification, the arc formwork shrinks toward the center, and the first slider moves toward the direction close to the arc formwork under the elastic force of the first spring. The first slider drives the first guide wheel to abut against the arc formwork. At this time, the fixed block is aligned with the first fixed groove, and the fixed block is inserted into the inner wall of the first fixed groove under the elastic force of the second spring. When the first slider moves toward the direction close to the arc formwork, under the cooperation of the connecting rod, the first slider drives the limit block to separate from the limit hole. At this time, the torsion spring is in a compressed state, so that the lead screw rotates under the elastic force of the torsion spring and drives the second guide wheel to abut against the arc formwork; S3: demoulding and lifting.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the concrete is poured, the first bottom plate and the second bottom plate are placed on the aluminum alloy formwork body, and the multiple baffles are abutted against the outer wall of the aluminum alloy formwork body, and then the first bottom plate and the second bottom plate are connected by bolts. When the concrete needs to be lifted off the curved formwork in the vertical direction by a crane after solidification, the multiple guide mechanisms are set to facilitate the guidance of the curved formwork, so that the curved formwork can move linearly upward in the vertical direction, thereby reducing the possibility of damage to the inner wall of the concrete; 2. When the arc template needs to be guided, the first driving assembly first drives the first slider to move toward the direction close to the arc template, and the first slider drives the first guide wheel to abut against the arc template, and then the second driving assembly drives the second slider to move toward the direction close to the arc template, and the second slider drives the second guide wheel to abut against the arc template, so as to facilitate the guiding of the arc template; 3. When it is necessary to drive the fixed block to separate from the first fixed groove or the second fixed groove, the operator can manually drive the handle to move upward in the vertical direction, the handle drives the moving rod to move upward in the vertical direction, and the moving rod drives the fixed block to move upward in the vertical direction, thereby facilitating the driving of the fixed block to separate from the first fixed groove or the second fixed groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 is a cross-sectional view showing the base in this embodiment; Figure 3 yes Figure 2 A partial enlarged view of the middle A; Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.

[0024] Description of reference numerals: 1, arc-shaped template; 2, external template assembly; 21, aluminum alloy template body; 22, first bottom plate; 23, second bottom plate; 24, clearance groove; 25, baffle; 3, guide mechanism; 311, base; 312, first slider; 313, first guide wheel; 314, second slider; 315, second guide wheel; 32, first drive assembly; 321, first spring; 322, first sliding groove; 33, second drive assembly; 331 , screw; 332, third sliding groove; 34, fixed component; 341, fixed block; 342, second sliding groove; 343, second spring; 344, first fixed groove; 345, second fixed groove; 35, moving part; 351, moving rod; 352, handle; 36, rotating component; 361, torsion spring; 362, fourth sliding groove; 363, limit block; 364, limit hole; 37, separation component; 371, connecting rod; 372, linkage groove. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0026] The present invention discloses a closed support structure of a template in a small space, such as Figure 1 and Figure 2 As shown, it includes an arc-shaped template 1 and an external template assembly 2. The cross section of the arc-shaped template 1 is an arc shape. The external template assembly 2 includes four aluminum alloy template bodies 21. The aluminum alloy template bodies 21 are square and arranged in the vertical direction. The four aluminum alloy template bodies 21 surround a square columnar space. The arc-shaped template 1 is arranged between the four aluminum alloy template bodies 21. A first bottom plate 22 and a second bottom plate 23 are arranged on the aluminum alloy template bodies 21. The cross sections of the first bottom plate 22 and the second bottom plate 23 are both square. The first bottom plate 22 The first bottom plate 22 and the second bottom plate 23 are both provided with a making way groove 24 for making way for the arc-shaped template 1. The cross-section of the making way groove 24 is semicircular and extends in the vertical direction. The first bottom plate 22 is connected to the second bottom plate 23 by bolts; a plurality of baffles 25 are fixedly connected to the first bottom plate 22 or the second bottom plate 23. The baffles 25 are square and arranged in the vertical direction. The baffles 25 can abut against the aluminum alloy template body 21. A plurality of guide mechanisms 3 for guiding the arc-shaped template 1 are both provided on the first bottom plate 22 and the second bottom plate 23.

[0027] After the concrete pouring is completed, the first bottom plate 22 and the second bottom plate 23 are placed on the aluminum alloy formwork body 21, and the multiple baffles 25 are made to abut against the outer wall of the aluminum alloy formwork body 21, and then the first bottom plate 22 and the second bottom plate 23 are connected by bolts. When the concrete needs to be lifted away from the arc formwork 1 in the vertical direction by a crane after solidification, the multiple guide mechanisms 3 can be set to facilitate the guidance of the arc formwork 1, so that the arc formwork 1 can move linearly upward in the vertical direction, thereby reducing the possibility of damage to the inner wall of the concrete.

[0028] like Figure 2 As shown, the guide mechanism 3 includes a base 311, which is square in shape and fixedly connected to the first base plate 22 or the second base plate 23. A first slider 312 is provided on the base 311 for sliding in a horizontal direction. The first slider 312 is square in shape. A first guide wheel 313 is installed on the side of the first slider 312 close to the arc-shaped template 1 through bolts, and the first guide wheel 313 can abut against the arc-shaped template 1; a second slider 314 is provided on the base 311 for sliding in a horizontal direction. The second slider 314 is square in shape. A second guide wheel 315 is installed on the side of the second slider 314 close to the arc-shaped template 1 through bolts, and the second guide wheel 315 can abut against the arc-shaped template 1. A first driving component 32 for driving the first slider 312 to move toward the direction close to the arc-shaped template 1 is provided on the base 311, and a second driving component 33 for driving the second slider 314 to move toward the direction close to the arc-shaped template 1 is provided on the base 311.

[0029] When the arc template 1 needs to be guided, the first driving component 32 is first used to drive the first slider 312 to move toward the arc template 1, and the first slider 312 drives the first guide wheel 313 to abut against the arc template 1. Then, the second driving component 33 is used to drive the second slider 314 to move toward the arc template 1, and the second slider 314 drives the second guide wheel 315 to abut against the arc template 1, thereby facilitating the guiding of the arc template 1.

[0030] like Figure 2 As shown, the first driving assembly 32 includes a first spring 321, and a first sliding groove 322 is opened on the side of the base 311 close to the arc template 1. The cross-section of the first sliding groove 322 is square and extends along the length direction of the base 311. The first slider 312 is slidably arranged on the inner wall of the first sliding groove 322 along the length direction of the base 311. The first spring 321 is arranged on the inner wall of the first sliding groove 322. The first spring 321 is arranged along the length direction of the base 311, one end of the first spring 321 is fixedly connected to the side of the first slider 312 away from the arc template 1, and the other end of the first spring 321 is fixedly connected to the inner wall of the first sliding groove 322. A fixing component 34 for fixing the first slider 312 is arranged on the base 311.

[0031] When the arc template 1 contracts toward the center, the first spring 321 is in a compressed state, and the first slider 312 moves toward the arc template 1 under the elastic force of the first spring 321. The first slider 312 drives the first guide wheel 313 to abut against the arc template 1. At this time, the first slider 312 is fixed by the fixing component 34, so that the first guide wheel 313 can abut against the arc template 1.

[0032] like Figure 2 and Figure 3 As shown, the fixing component 34 includes a fixing block 341, which is square in shape. A second sliding groove 342 is provided at the bottom of the first sliding block 312. The cross section of the second sliding groove 342 is square and extends in the vertical direction. The fixing block 341 is slidably arranged on the inner wall of the second sliding groove 342 in the vertical direction. A second spring 343 is provided in the second sliding groove 342. The second spring 343 is arranged in the vertical direction. One end of the second spring 343 is fixedly connected to the inner wall of the second sliding groove 342, and the other end of the second spring 343 is fixedly connected to the top of the fixing block 341. A first fixing groove 344 and a second fixing groove 345 are provided on the first bottom plate 22 or the second bottom plate 23. The cross sections of the first fixing groove 344 and the second fixing groove 345 are both square and extend in the vertical direction.

[0033] The fixing block 341 can be inserted into the first fixing groove 344, and the fixing block 341 can be inserted into the second fixing groove 345. The first slider 312 is provided with a moving member 35 for driving the fixing block 341 to move upward in the vertical direction. When the first slider 312 drives the first guide wheel 313 to abut against the arc-shaped template 1, the fixing block 341 is aligned with the first fixing groove 344, and the second spring 343 is in a compressed state. The fixing block 341 is inserted into the inner wall of the first fixing groove 344 under the elastic force of the second spring 343, so that the first slider 312 can be easily fixed.

[0034] like Figure 2 and Figure 3As shown, the moving member 35 includes a moving rod 351, the cross section of the moving rod 351 is circular and is arranged in the vertical direction, the moving rod 351 is arranged through the first slider 312, the moving rod 351 is fixedly connected to the top of the fixed block 341, and the end of the moving rod 351 away from the fixed block 341 is fixedly connected to a handle 352, and the handle 352 is in the shape of a round pancake. When it is necessary to drive the fixed block 341 to separate from the first fixed groove 344 or the second fixed groove 345, the operator can manually drive the handle 352 to move upward in the vertical direction, the handle 352 drives the moving rod 351 to move upward in the vertical direction, and the moving rod 351 drives the fixed block 341 to move upward in the vertical direction, so that it is easy to drive the fixed block 341 to separate from the first fixed groove 344 or the second fixed groove 345.

[0035] like Figure 2 and Figure 4 As shown, the second driving assembly 33 includes a lead screw 331, a third sliding groove 332 is provided on one side of the base 311 close to the arc-shaped template 1, the cross section of the third sliding groove 332 is square and extends along the length direction of the base 311, the second slider 314 is slidably arranged on the inner wall of the third sliding groove 332 along the length direction of the base 311, one end of the lead screw 331 is rotatably arranged on the inner wall of the third sliding groove 332 through a bearing, the lead screw 331 is arranged along the length direction of the base 311, the second slider 314 is threadedly matched with the lead screw 331, the cross sections of the second slider 314 and the third sliding groove 332 are both square with equal areas, and a rotating component 36 for driving the lead screw 331 to rotate is provided on the base 311. When it is necessary to drive the second slider 314 to move in the direction close to the arc-shaped template 1, the lead screw 331 is driven to rotate by the rotating component 36, so that it is easy to drive the second slider 314 to move in the direction close to the arc-shaped template 1.

[0036] like Figure 2 and Figure 4As shown, the rotating component 36 includes a torsion spring 361, which is sleeved on the lead screw 331, one end of the torsion spring 361 is fixedly connected to the lead screw 331, and the other end of the torsion spring 361 is fixedly connected to the inner wall of the third sliding groove 332. The inner wall of the third sliding groove 332 is provided with a fourth sliding groove 362, the cross-section of the fourth sliding groove 362 is square and extends in the vertical direction, and a limiting block 363 is slidably arranged on the inner wall of the fourth sliding groove 362. The limiting block 363 is square and is arranged in the vertical direction. A limiting hole 364 is provided on the lead screw 331, and the cross-section of the limiting hole 364 is square and extends in the vertical direction. The limiting block 363 can be inserted into the inner wall of the limiting hole 364, and a separation piece 37 for driving the limiting block 363 to separate from the limiting hole 364 is provided in the base 311. When the lead screw 331 needs to be driven to rotate, the limiting block 363 is first driven to separate from the limiting hole 364 through the separation member 37 . At this time, the torsion spring 361 is in a compressed state, so that the lead screw 331 rotates under the elastic force of the torsion spring 361 .

[0037] like Figure 2 and Figure 4 As shown, the separation member 37 includes a connecting rod 371, which is square in shape. A linkage groove 372 is provided on the inner wall of the first sliding groove 322, which extends in the horizontal direction and is connected to the fourth sliding groove 362. The connecting rod 371 is arranged in the linkage groove 372, and one end of the connecting rod 371 is hinged to the first slider 312 through a hinge, and the other end of the connecting rod 371 is hinged to the limit block 363 through a hinge. When the first slider 312 moves toward the direction close to the arc-shaped template 1, under the cooperation of the connecting rod 371, the first slider 312 drives the limit block 363 to move downward in the vertical direction, so that it is easy to drive the limit block 363 to separate from the limit hole 364.

[0038] The embodiment of the present application also discloses a method for installing a closed support structure in a small space, comprising the following steps: S1: After the concrete pouring is completed, the first bottom plate 22 and the second bottom plate 23 are placed on the aluminum alloy formwork body 21, and the plurality of baffles 25 are abutted against the outer wall of the aluminum alloy formwork body 21, and then the first bottom plate 22 and the second bottom plate 23 are connected by bolts, and the handle 352 is manually driven to move upward to separate the fixing block 341 from the second fixing groove 345, at which time the first guide wheel 313 abuts against the arc-shaped formwork 1; S2: When the concrete needs to be lifted away from the arc formwork 1 in the vertical direction by a crane after solidification, the arc formwork 1 shrinks toward the center, and the first slider 312 moves toward the direction close to the arc formwork 1 under the elastic force of the first spring 321, and the first slider 312 drives the first guide wheel 313 to abut against the arc formwork 1. At this time, the fixed block 341 is aligned with the first fixed groove 344, and the fixed block 341 is inserted into the inner wall of the first fixed groove 344 under the elastic force of the second spring 343. When the first slider 312 moves toward the direction close to the arc formwork 1, under the cooperation of the connecting rod 371, the first slider 312 drives the limiting block 363 to separate from the limiting hole 364. At this time, the torsion spring 361 is in a compressed state, so that the lead screw 331 rotates under the elastic force of the torsion spring 361, and drives the second guide wheel 315 to abut against the arc formwork 1; S3: demoulding and lifting.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A closed support structure for a template in a small space, comprising an arc-shaped template (1) and an external template assembly (2), wherein the external template assembly (2) comprises four aluminum alloy template bodies (21), the four aluminum alloy template bodies (21) enclose a square columnar space, and the arc-shaped template (1) is arranged between the four aluminum alloy template bodies (21), characterized in that: The aluminum alloy template body (21) is provided with a first bottom plate (22) and a second bottom plate (23); the first bottom plate (22) and the second bottom plate (23) are both provided with a clearance groove (24) for making way for the arc-shaped template (1); the first bottom plate (22) and the second bottom plate (23) are connected to each other by bolts; a plurality of baffles (25) are fixedly connected to the first bottom plate (22) or the second bottom plate (23); the baffles (25) can abut against the aluminum alloy template body (21); the first bottom plate (22) and the second bottom plate (23) are both provided with a plurality of guide mechanisms (3) for guiding the arc-shaped template (1).

2. A closed support structure for templates in a small space according to claim 1, characterized in that: The guide mechanism (3) comprises a base (311), the base (311) being mounted on the first bottom plate (22) or the second bottom plate (23); a first slider (312) being slidably arranged on the base (311), a first guide wheel (313) being arranged on the first slider (312), and the first guide wheel (313) being capable of abutting against the arc-shaped template (1); a second slider (314) being slidably arranged on the base (311), a second guide wheel (315) being arranged on the second slider (314), and the second guide wheel (315) being capable of abutting against the arc-shaped template (1); a first driving component (32) for driving the first slider (312) to move being arranged on the base (311), and a second driving component (33) for driving the second slider (314) to move being arranged on the base (311).

3. A closed support structure for template in a small space according to claim 2, characterized in that: The first driving component (32) comprises a first spring (321); a first sliding groove (322) is provided on the base (311); the first sliding block (312) is slidably arranged on the inner wall of the first sliding groove (322); the first spring (321) is arranged on the inner wall of the first sliding groove (322); one end of the first spring (321) is fixedly connected to the first sliding block (312); the other end of the first spring (321) is fixedly connected to the inner wall of the first sliding groove (322); and a fixing component (34) for fixing the first sliding block (312) is provided on the base (311).

4. A closed support structure for template in a small space according to claim 3, characterized in that: The fixing component (34) comprises a fixing block (341), a second sliding groove (342) is provided on the first sliding block (312), the fixing block (341) is slidably arranged on the inner wall of the second sliding groove (342), a second spring (343) is arranged in the second sliding groove (342), one end of the second spring (343) is fixedly connected to the inner wall of the second sliding groove (342), and the other end of the second spring (343) is fixedly connected to the fixing block (341), the first bottom plate (22) or the second bottom plate (23) is provided with a first fixing groove (344) and a second fixing groove (345), the fixing block (341) can be plugged into the first fixing groove (344), and the fixing block (341) can be plugged into the second fixing groove (345), and the first sliding block (312) is provided with a moving part (35) for driving the fixing block (341) to move.

5. A closed support structure for template in a small space according to claim 4, characterized in that: The moving member (35) comprises a moving rod (351), the moving rod (351) is arranged to pass through the first sliding block (312), the moving rod (351) is fixedly connected to the fixed block (341), and one end of the moving rod (351) away from the fixed block (341) is fixedly connected to a handle (352).

6. The closed support structure of template in a small space according to claim 3, characterized in that: The second driving assembly (33) includes a lead screw (331), a third sliding groove (332) is provided on the base (311), the second slider (314) is slidably arranged on the inner wall of the third sliding groove (332), one end of the lead screw (331) is rotatably arranged on the inner wall of the third sliding groove (332), the second slider (314) is threadedly engaged with the lead screw (331), the cross-sections of the second slider (314) and the third sliding groove (332) are both squares with equal areas, and a rotating component (36) for driving the lead screw (331) to rotate is provided on the base (311).

7. A closed support structure for template in a small space according to claim 6, characterized in that: The rotating component (36) comprises a torsion spring (361), one end of which is fixedly connected to the lead screw (331), and the other end of which is fixedly connected to the inner wall of the third sliding groove (332). The inner wall of the third sliding groove (332) is provided with a fourth sliding groove (362), and a limiting block (363) is slidably arranged on the inner wall of the fourth sliding groove (362). A limiting hole (364) is arranged on the lead screw (331), and the limiting block (363) can be plugged into the inner wall of the limiting hole (364). A separating member (37) for driving the limiting block (363) to separate from the limiting hole (364) is arranged in the base (311).

8. The closed support structure of template in a small space according to claim 7, characterized in that: The separation member (37) comprises a connecting rod (371), the inner wall of the first sliding groove (322) is provided with a linkage groove (372), the linkage groove (372) is connected with the fourth sliding groove (362), the connecting rod (371) is arranged in the linkage groove (372), one end of the connecting rod (371) is hinged to the first sliding block (312), and the other end of the connecting rod (371) is hinged to the limit block (363).

9. A closed support and installation method for templates in a small space, characterized in that: The steps include: S1: After the concrete pouring is completed, the first bottom plate (22) and the second bottom plate (23) are placed on the aluminum alloy formwork body (21), and the plurality of baffles (25) are abutted against the outer wall of the aluminum alloy formwork body (21), and then the first bottom plate (22) and the second bottom plate (23) are connected by bolts, and the handle (352) is manually driven to move upward to separate the fixing block (341) from the second fixing groove (345), at which time the first guide wheel (313) is abutted against the arc-shaped formwork (1); S2: When the concrete solidifies and needs to be lifted off the curved template (1) in the vertical direction by a crane, the curved template (1) shrinks toward the center, and the first slider (312) moves toward the curved template (1) under the elastic force of the first spring (321). The first slider (312) drives the first guide wheel (313) to abut against the curved template (1). At this time, the fixing block (341) is aligned with the first fixing groove (344), and the fixing block (341) is moved under the elastic force of the second spring (343). The first slider (312) is inserted into the inner wall of the first fixing groove (344). When the first slider (312) moves toward the direction close to the arc-shaped template (1), the first slider (312) drives the limit block (363) to separate from the limit hole (364) under the cooperation of the connecting rod (371). At this time, the torsion spring (361) is in a compressed state, so that the lead screw (331) rotates under the elastic force of the torsion spring (361) and drives the second guide wheel (315) to abut against the arc-shaped template (1). S3: Demould and lift off.

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