Adjustable concrete in-pipe formwork structure
By designing a combined structure of aluminum alloy templates and support columns, and utilizing components such as adjustable fixing plates and sliders, the problem of poor template adjustment flexibility is solved, enabling convenient adjustment and stable installation of the templates to meet the needs of different pipe diameters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QIXIAN FENHE WATER CONSERVANCY CONSTR MANAGEMENT DIVISION OF SHANXI
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-07
Smart Images

Figure CN224468436U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inner formwork panels for concrete pipes, specifically to an adjustable inner formwork structure for concrete pipes. Background Technology
[0002] Adjustable concrete pipe internal formwork is a formwork system designed for precise control of the internal cavity dimensions of concrete components. A Chinese patent discloses a formwork structure for a one-time molding process of a manhole guide channel (authorization announcement number CN221627143 U). This patented technology utilizes a self-designed arc-shaped formwork in the concrete construction of the manhole guide channel, offering superior strength and rigidity compared to ordinary formwork. It can be reused multiple times and incorporates compaction and adjustable support components. The arc-shaped formwork allows for expansion and contraction by adjusting the support components, accommodating different pipe diameters. However, this design lacks flexibility in movement and adjustment. Therefore, those skilled in the art have developed an adjustable concrete pipe internal formwork structure to address the problems mentioned in the background art. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides an adjustable concrete pipe internal formwork structure, including a plate, support columns, aluminum alloy formwork, aluminum alloy buckle plates, a first adjustable fixing plate and a second adjustable fixing plate. Multiple support columns are installed on both the outer and inner sides of the plate. Multiple aluminum alloy formwork is installed on the outer side of the support columns. Aluminum alloy buckle plates are installed at the left and right ends of two aluminum alloy formworks at the same level. Multiple first adjustable fixing plates are installed inside the aluminum alloy formwork, and multiple second adjustable fixing plates are installed inside the aluminum alloy buckle plates.
[0004] Preferably, the aluminum alloy template is provided with multiple No. 1 bolt holes at the upper and lower ends, and the No. 1 adjustable fixing plate is provided with No. 3 bolt holes at the upper and lower ends. The fixing bolts in the No. 1 and No. 3 bolt holes can be screwed in and installed between the support column.
[0005] Preferably, the aluminum alloy template has a rectangular groove in the middle sidewall, a sliding groove in the middle sidewall of the rectangular groove, a movable rectangular block in the rectangular groove, and the rectangular block is installed on the inner sidewall of the first adjustable fixing plate.
[0006] Preferably, a slider is installed on the side wall of the rectangular block, and the slider can slide in the groove; a dial plate is installed on the outer side wall of the first adjustable fixing plate.
[0007] Preferably, the aluminum alloy buckle plate is provided with No. 2 bolt holes at both the upper and lower ends, and the upper and lower side walls of the No. 2 adjustable fixing plate are equipped with protruding plates, and No. 4 bolt holes are provided on the protruding plates. Fixing bolts can be screwed into the No. 2 and No. 4 bolt holes to be installed between the bracket column.
[0008] Preferably, the aluminum alloy buckle plate has buckle grooves at both ends, into which aluminum alloy templates can be fastened. The aluminum alloy buckle plate has a moving groove in the middle, and the upper and lower side walls of the moving groove have limiting grooves. A guide rod is installed at the center of the moving groove. A second adjustable fixing plate can be moved in the moving groove. The center of the second adjustable fixing plate has a guide groove, and a guide rod is installed in the guide groove. Limiting plates are installed at the middle of the upper and lower side walls of the second adjustable fixing plate. The limiting plates can move in the limiting grooves. A second lever plate is installed on the outer side wall of the second adjustable fixing plate.
[0009] The technical effects and advantages of this utility model are as follows:
[0010] 1. Install the support columns on the outer and inner ends of the panel. Place the aluminum alloy template horizontally on the outer end of the support columns. Move and adjust the position of the first adjustable fixing plate on the aluminum alloy template by moving the first dial plate until it corresponds to the position of the support column. Then, install the aluminum alloy template on the support column using the fixing bolts. Since the middle side wall of the aluminum alloy template has a rectangular groove, and the middle side wall of the rectangular groove has a sliding groove, a movable rectangular block can be installed in the rectangular groove. The rectangular block is installed on the inner side wall of the first adjustable fixing plate. The slider is installed on the side wall of the rectangular block and can slide in the sliding groove. This allows for convenient adjustment of the position of the first adjustable fixing plate and the addition of the first adjustable fixing plate to the aluminum alloy template. The design is flexible and the operation is convenient.
[0011] 2. After the aluminum alloy formwork is installed, fasten the slots at both ends of the aluminum alloy frame plate into the two ends of the aluminum alloy formwork to further improve the stability of the overall structure. Adjust the position of the second adjustable fixing plate by moving the second lever. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of an adjustable concrete pipe formwork structure provided in an embodiment of this application;
[0013] Figure 2 This is a schematic diagram of a partial exploded structure in an adjustable concrete pipe internal formwork structure provided in this application embodiment. Figure 1 ;
[0014] Figure 3 This application provides an adjustable concrete pipe internal formwork structure. Figure 2 Enlarged schematic diagram of structure A;
[0015] Figure 4 This is a schematic diagram of a partial exploded structure in an adjustable concrete pipe internal formwork structure provided in this application embodiment. Figure 2 ;
[0016] Figure 5 This application provides an adjustable concrete pipe internal formwork structure. Figure 4An enlarged schematic diagram of the B structure.
[0017] In the diagram: 1. Panel; 2. Support column; 3. Aluminum alloy template; 4. Aluminum alloy buckle plate; 5. Adjustable fixing plate No. 1; 6. Adjustable fixing plate No. 2; 301. Bolt hole No. 1; 302. Rectangular groove; 303. Sliding groove; 401. Bolt hole No. 2; 402. Moving groove; 403. Limiting groove; 404. Buckle groove; 405. Guide rod; 501. Bolt hole No. 3; 502. Rectangular block; 503. Sliding block; 504. Altering plate No. 1; 601. Protruding plate; 602. Bolt hole No. 4; 603. Limiting plate; 604. Guide groove; 605. Altering plate No. 2. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose. Example
[0019] Please see Figures 1-5 In this embodiment, an adjustable concrete pipe internal formwork structure is provided, including a plate body 1, support columns 2, aluminum alloy formwork 3, aluminum alloy buckle plate 4, first adjustable fixing plate 5 and second adjustable fixing plate 6. Multiple support columns 2 are installed on the outer and inner sides of the plate body 1. Multiple aluminum alloy formwork 3 are installed on the outer side of the support columns 2. Aluminum alloy buckle plates 4 are installed at the left and right ends of two aluminum alloy formwork 3 at the same level. Multiple first adjustable fixing plates 5 are installed inside the aluminum alloy formwork 3. Multiple second adjustable fixing plates 6 are installed inside the aluminum alloy buckle plate 4.
[0020] Specifically, the aluminum alloy template 3 has multiple bolt holes 301 at its upper and lower ends, and the adjustable fixing plate 5 has bolt holes 501 at its upper and lower ends. The bolt holes 301 and 501 can be screwed into the fixing bolts and installed between them and the support column 2. The middle side wall of the aluminum alloy template 3 has a rectangular groove 302, and the middle side wall of the rectangular groove 302 has a sliding groove 303. The rectangular block 502 can be moved in the rectangular groove 302. The rectangular block 502 is installed on the inner side wall of the adjustable fixing plate 5. The slider 503 is installed on the side wall of the rectangular block 502. The slider 503 can slide in the sliding groove 303. The outer side wall of the adjustable fixing plate 5 has a lever 504 installed.
[0021] The aluminum alloy frame plate 4 has two bolt holes 401 at its upper and lower ends. The upper and lower side walls of the adjustable fixing plate 6 are fitted with protruding plates 601, each with a bolt hole 602. Fixing bolts can be screwed into the bolt holes 401 and 602 to install the plate between the plate and the support column 2. Both ends of the aluminum alloy frame plate 4 have fastening grooves 404 into which aluminum alloy templates 3 can be fastened. The middle of the aluminum alloy frame plate 4 has a moving groove 402, which has upper and lower... Both sides of the wall are provided with limiting grooves 403. A guide rod 405 is installed at the center of the moving groove 402. The second adjustable fixing plate 6 can be moved in the moving groove 402. The center of the second adjustable fixing plate 6 is provided with a guide groove 604. A guide rod 405 is installed in the guide groove 604. Limiting plates 603 are installed at the middle of the upper and lower sides of the second adjustable fixing plate 6. The limiting plates 603 can be moved in the limiting grooves 403. A second lever plate 605 is installed on the outer side of the second adjustable fixing plate 6.
[0022] The working principle of this utility model is as follows:
[0023] Using an adjustable concrete pipe formwork structure, the support column 2 is installed on the outer and inner ends of the slab 1. The aluminum alloy formwork 3 is placed horizontally on the outer end of the support column 2. The position of the first adjustable fixing plate 5 on the aluminum alloy formwork 3 is adjusted by moving the first lever 504 until it corresponds to the position of the support column 2. At this time, the aluminum alloy formwork 3 is installed on the support column 2 by fixing bolts. Since the middle side wall of the aluminum alloy formwork 3 has a rectangular groove 302, and the middle side wall of the rectangular groove 302 has a sliding groove 303, a movable rectangular block 502 is installed in the rectangular groove 302. The rectangular block 502 is installed on the first lever 504. The inner side wall of the adjustable fixing plate 5 has a slider 503 installed on the side wall of the rectangular block 502. The slider 503 can slide in the groove 303, which can conveniently adjust the position of the first adjustable fixing plate 5. The first adjustable fixing plate 5 can also be added to the aluminum alloy template 3. The design is flexible and the operation is convenient. After the aluminum alloy template 3 is installed, the buckle grooves 404 at both ends of the aluminum alloy buckle plate 4 are snapped into the two ends of the aluminum alloy template 3 to further improve the stability of the overall structure. The position of the second adjustable fixing plate 6 is adjusted by moving the second dial plate 605. The aluminum alloy buckle plate 4 and the support column 2 are installed by fixing bolts.
[0024] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. An adjustable concrete pipe internal formwork structure, characterized in that, Includes a panel (1), support columns (2), aluminum alloy templates (3), aluminum alloy buckle plates (4), a first adjustable fixing plate (5) and a second adjustable fixing plate (6). Multiple support columns (2) are installed on the outer and inner sides of the panel (1). Multiple aluminum alloy templates (3) are installed on the outer side of the support columns (2). Aluminum alloy buckle plates (4) are installed on the left and right ends of two aluminum alloy templates (3) at the same level. Multiple first adjustable fixing plates (5) are installed inside the aluminum alloy templates (3). Multiple second adjustable fixing plates (6) are installed inside the aluminum alloy buckle plates (4).
2. The adjustable concrete pipe internal formwork structure according to claim 1, characterized in that, The aluminum alloy template (3) is provided with multiple No. 1 bolt holes (301) at the upper and lower ends. The No. 1 adjustable fixing plate (5) is provided with No. 3 bolt holes (501) at the upper and lower ends. The No. 1 bolt hole (301) and the No. 3 bolt hole (501) can be screwed into the fixing bolts and installed between them and the support column (2).
3. The adjustable concrete pipe inner formwork structure according to claim 2, characterized in that, The aluminum alloy template (3) has a rectangular groove (302) on the middle side wall, and a sliding groove (303) is provided on the middle side wall of the rectangular groove (302).
4. The adjustable concrete pipe internal formwork structure according to claim 3, characterized in that, The rectangular block (502) is movable within the rectangular groove (302), and the rectangular block (502) is installed on the inner side wall of the first adjustable fixing plate (5).
5. The adjustable concrete pipe internal formwork structure according to claim 4, characterized in that, The rectangular block (502) has a slider (503) installed on its side wall. The slider (503) can slide in the groove (303). The first adjustable fixing plate (5) has a first dial plate (504) installed on its outer side wall.
6. The adjustable concrete pipe inner formwork structure according to claim 5, characterized in that, The aluminum alloy buckle plate (4) is provided with a second bolt hole (401) at the upper and lower ends. The upper and lower side walls of the second adjustable fixing plate (6) are equipped with a protruding plate (601). The protruding plate (601) is provided with a fourth bolt hole (602). The second bolt hole (401) and the fourth bolt hole (602) can be screwed into the fixing bolts and installed between them and the support column (2).
7. The adjustable concrete pipe internal formwork structure according to claim 6, characterized in that, Both ends of the aluminum alloy buckle plate (4) are provided with buckle grooves (404), and aluminum alloy templates (3) can be snapped into the buckle grooves (404).
8. The adjustable concrete pipe inner formwork structure according to claim 7, characterized in that, The aluminum alloy buckle plate (4) has a moving groove (402) in the middle. The upper and lower side walls of the moving groove (402) are provided with limiting grooves (403). A guide rod (405) is installed at the center of the moving groove (402).
9. An adjustable concrete pipe internal formwork structure according to claim 8, characterized in that, The movable groove (402) contains a movable second adjustable fixing plate (6). The center of the second adjustable fixing plate (6) is provided with a guide groove (604). The guide groove (604) contains a guide rod (405). Limiting plates (603) are installed in the middle of the upper and lower side walls of the second adjustable fixing plate (6). The limiting plates (603) can move in the limiting groove (403). The outer side wall of the second adjustable fixing plate (6) is equipped with a second lever plate (605).