Truss type cast-in-place box culvert template system
By designing a truss-type cast-in-place box culvert formwork system, and utilizing hydraulic rods and connecting rods for rotational connection and arc groove design, the problem of separating the formwork from the truss-type cast-in-place box culvert was solved, thus improving construction efficiency.
Patent Information
- Application Number
- CN202520132077.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The existing truss-type cast-in-place box culvert formwork is not easy to move after the casting is completed, and it is difficult to separate it from the truss-type cast-in-place box culvert, which affects the construction efficiency.
A truss-type cast-in-place box culvert formwork system was designed. By using vertical and horizontal hydraulic rods in combination, the middle formwork and the bottom formwork can move downward and inward respectively, detaching from the truss-type cast-in-place box culvert. Combined with the connecting rod rotation connection and the arc groove design, the formwork can be detached synchronously.
This allows for convenient separation of the formwork from the truss-type cast-in-place box culvert, improving the mobility and construction efficiency of the formwork system.
Smart Images

Figure CN223867126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of formwork technology, and in particular to a truss-type cast-in-place box culvert formwork system. Background Technology
[0002] Truss-type cast-in-place box culverts are box-shaped culverts constructed using on-site concrete casting, incorporating truss elements to enhance their overall load-bearing capacity and stability. A typical cast-in-place box culvert mainly consists of a top slab, bottom slab, and side walls, forming a closed spatial structure. Truss-type cast-in-place box culverts, however, optimize overall structural performance by adding truss structures (such as steel trusses or reinforced concrete trusses) to the traditional cast-in-place box culvert.
[0003] Existing technologies, such as the utility model multi-hole cast-in-place box culvert bottom slab formwork system, authorized announcement number CN214883071U, utilize an outer truss-supported track-moving side formwork, subbase concrete, and a suspended, anti-buoyancy, easily removable inner corner formwork system for auxiliary pouring, thereby accelerating construction efficiency.
[0004] The commonly used truss-type cast-in-place box culvert formwork is inconvenient to move after the casting is completed.
[0005] Currently, there is a lack of a formwork system that facilitates the separation of the formwork from the truss-type cast-in-place box culvert and allows for easy movement of the formwork system.
[0006] Therefore, in order to address the above problems, a truss-type cast-in-place box culvert formwork system is proposed to solve these problems. Utility Model Content
[0007] This invention addresses the shortcomings of existing technologies by developing a truss-type cast-in-place box culvert formwork system. This invention allows for easy separation of the formwork from the truss-type cast-in-place box culvert, facilitating the movement of the formwork system.
[0008] The technical solution to the problem solved by this utility model is as follows: This utility model provides a truss-type cast-in-place box culvert formwork system, comprising: a supporting U-plate, the supporting U-plate being connected to two sets of symmetrical vertical plates; a set of vertical hydraulic rods, respectively connected to the supporting U-plate, the piston rods of the set of vertical hydraulic rods being respectively connected to a first connecting rod, and the piston rods of the set of vertical hydraulic rods being respectively connected to an intermediate formwork; two sets of symmetrical horizontal hydraulic rods, respectively connected to the supporting U-plate, the piston rods of the two sets of symmetrical horizontal hydraulic rods being respectively connected to a bottom formwork; symmetrical side formwork, each connected to a set of guide horizontal rods, each guide horizontal rod being respectively connected to a guide tube, each guide tube being respectively connected to a slider, and each slider being nested within a corresponding vertical plate. By using the vertical hydraulic rods, the intermediate formwork moves downwards and detaches from the truss-type cast-in-place box culvert when it contracts; by using the horizontal hydraulic rods, the bottom formwork moves inwards and detaches from the truss-type cast-in-place box culvert.
[0009] As an optimization, a set of vertical hydraulic rods are respectively connected to lower blocks, each lower block is rotatably connected to a lower connecting rod, each lower connecting rod is rotatably connected to a middle connecting rod, the center of each middle connecting rod is rotatably connected to a cross groove, the piston rod of each vertical hydraulic rod passes through the corresponding cross groove, each middle connecting rod is rotatably connected to an upper connecting rod, and each upper connecting rod is rotatably connected to a first connecting rod. Symmetrical side templates are respectively connected to a set of U-shaped shafts, each U-shaped shaft is connected to a second connecting rod, each U-shaped shaft is set in the vertical groove of the corresponding cross groove, and the symmetrical second connecting rods are set in the horizontal groove of the set of cross grooves. Each vertical plate is provided with a vertical groove, and the circular shaft of each U-shaped shaft matches the corresponding vertical groove. By using a connecting rod rotation connection, the middle template and side templates move downwards synchronously, with the middle template moving faster than the side templates, thus achieving the disengagement of the middle template and side templates from the top of the truss-type cast-in-place box culvert.
[0010] As an optimization, each of the vertical plates is provided with an arc groove, each vertical groove is connected to the corresponding arc groove, and the circular axis of each U-shaped shaft is matched with the corresponding arc groove. By using arc grooves, the side formwork can move downwards and inwards simultaneously, thus separating from the top and side walls of the truss-type cast-in-place box culvert.
[0011] As an optimization, the symmetrical bottom templates are respectively connected to the corresponding side templates, so that the side templates move synchronously with the bottom templates and detach inward from the side wall of the truss-type cast-in-place box culvert.
[0012] As an optimization, the intermediate template is connected to the symmetrical side templates, so that the side templates move synchronously with the intermediate templates and detach downwards from the top of the truss-type cast-in-place box culvert.
[0013] As an optimization, the supporting U-plate is equipped with mounting seats for two sets of evenly distributed wheels, which facilitates the transfer of this device.
[0014] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:
[0015] (1) This device uses horizontal hydraulic rods to move the bottom formwork inward, which facilitates the movement of this device and allows it to be separated from the truss-type cast-in-place box culvert.
[0016] (2) This device uses vertical hydraulic rods to move the middle template downwards, which facilitates the movement of this device and allows it to be separated from the truss-type cast-in-place box culvert.
[0017] (3) This device uses vertical grooves and arc grooves to make the side formwork move downwards and then swing inwards, so that the side formwork is separated from the truss-type cast-in-place box culvert. Attached Figure Description
[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0019] Figure 1 This is a schematic diagram of the pouring state of this utility model.
[0020] Figure 2 This is a partial three-dimensional structural diagram of the present invention. Figure 1 .
[0021] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 2 .
[0022] Figure 4 This is a partial three-dimensional structural diagram of the present invention. Figure 3 .
[0023] Figure 5 This is a schematic diagram of the detachment process of this utility model.
[0024] Figure 6 This is a schematic diagram of the disengaged state of this utility model.
[0025] In the diagram: 1. Middle template, 2. Side template, 3. Bottom template, 4. Support U-plate, 5. Wheel, 6. Horizontal hydraulic rod, 7. Vertical plate, 8. Vertical hydraulic rod, 10. Vertical groove, 11. Arc groove, 12. Slider, 13. Guide tube, 14. Guide crossbar, 15. First connecting rod, 16. Second connecting rod, 17. U-shaped shaft, 18. Cross groove, 19. Upper connecting rod, 20. Middle connecting rod, 21. Lower block, 22. Lower connecting rod. Detailed Implementation
[0026] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, 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 utility model based on the specific circumstances.
[0027] like Figures 1 to 6 As shown, a truss-type cast-in-place box culvert formwork system includes: a supporting U-plate 4 connected to two sets of symmetrical vertical plates 7; a set of vertical hydraulic rods 8 connected to the supporting U-plate 4, with the piston rods of the vertical hydraulic rods 8 connected to first connecting rods 15 and intermediate template 1; two sets of symmetrical horizontal hydraulic rods 6 connected to the supporting U-plate 4, with the piston rods of the two sets of symmetrical horizontal hydraulic rods 6 connected to bottom template 3; and symmetrical side templates 2 connected to a set of guide horizontal rods 14, each guide horizontal rod 14 connected to a guide tube 13, each guide tube 13 connected to a slider 12, and each slider 12 nesting within a corresponding vertical plate 7. By using the vertical hydraulic rods 8, the intermediate template 1 moves downwards and detaches from the truss-type cast-in-place box culvert during contraction; by using the horizontal hydraulic rods 6, the bottom template 3 moves inwards and detaches from the truss-type cast-in-place box culvert.
[0028] A set of vertical hydraulic rods 8 are respectively connected to lower blocks 21. Each lower block 21 is rotatably connected to a lower connecting rod 22. Each lower connecting rod 22 is rotatably connected to a middle connecting rod 20. The center of each middle connecting rod 20 is rotatably connected to a cross groove 18. The piston rod of each vertical hydraulic rod 8 passes through the corresponding cross groove 18. Each middle connecting rod 20 is rotatably connected to an upper connecting rod 19. Each upper connecting rod 19 is rotatably connected to a first connecting rod 15. The symmetrical side templates 2 are respectively connected to a set of U-shaped shafts 17. Each U-shaped shaft 17 is connected to a second connecting rod 16. Each U-shaped shaft 17 is respectively set in the vertical groove of the corresponding cross groove 18. The symmetrical second connecting rods 16 are respectively set in the horizontal groove of the set of cross grooves 18. Each vertical plate 7 is respectively provided with a vertical groove 10. The circular shaft of each U-shaped shaft 17 matches the corresponding vertical groove 10. By using a linkage rotation connection, the middle template 1 and the side template 2 move downward synchronously, with the middle template 1 moving faster than the side template 2, thus achieving the separation of the middle template 1 and the side template 2 from the top of the truss-type cast-in-place box culvert.
[0029] Each of the vertical plates 7 is provided with an arc groove 11, each of the vertical grooves 10 is connected to the corresponding arc groove 11, and the circular shaft of each U-shaped shaft 17 is matched with the corresponding arc groove 11. By using the arc groove 11, the side template 2 can move downward and inward at the same time, thereby separating from the top and side walls of the truss-type cast-in-place box culvert.
[0030] The supporting U-plate 4 is equipped with mounting seats for two sets of evenly distributed wheels 5, which facilitates the transfer of this device.
[0031] Example 1: The symmetrical bottom template 3 is connected to the corresponding side template 2, so that the side template 2 moves synchronously with the bottom template 3 and detaches inward from the side wall of the truss-type cast-in-place box culvert.
[0032] The workflow of this embodiment is as follows:
[0033] During casting, the state of this device is as follows: Figure 1 As shown, after the concrete pouring is completed and the concrete dries, the vertical hydraulic rod 8 is controlled to retract and move, causing the intermediate formwork 1 to move downwards and detach from the truss-type cast-in-place box culvert. The horizontal hydraulic rod 6 is controlled to retract, and the hydraulic rod 6 drives the bottom formwork 3 and the side formwork 2 to move. The side formwork 2 drives the guide horizontal rod 14 to move along the guide pipe 13, causing the bottom formwork 3 to detach from the truss-type cast-in-place box culvert, and the side formwork 2 to disengage from the side wall of the truss-type cast-in-place box culvert, facilitating the transfer of this device for the next section of pouring.
[0034] Example 2: The intermediate template 1 is connected to the symmetrical side templates 2, so that the side templates 2 move synchronously with the intermediate template 1 and detach downward from the top of the truss-type cast-in-place box culvert.
[0035] The workflow of this embodiment is as follows:
[0036] During casting, the state of this device is as follows: Figure 1 As shown, after the pouring is completed and the concrete has dried, the horizontal hydraulic rod 6 is controlled to retract. The hydraulic rod 6 drives the bottom formwork 3 to move inward, causing the bottom formwork 3 to detach from the truss-type cast-in-place box culvert.
[0037] The vertical hydraulic rod 8 is controlled to retract and move, causing the intermediate template 1 to move downwards and detach from the truss-type cast-in-place box culvert. The intermediate template 1 drives the side template 2 to move downwards, and the side template 2 drives the guide crossbar 14 and guide tube 13 to move. The guide tube 13 drives the slider 12 to move along the vertical plate 17. The side template 2 disengages from the top plate of the truss-type cast-in-place box culvert, facilitating the transfer of this device for the next section of pouring.
[0038] Example 3:
[0039] The workflow of this embodiment is as follows:
[0040] During casting, the state of this device is as follows: Figure 1 As shown, after the pouring is completed and the concrete has dried, the horizontal hydraulic rod 6 is controlled to retract, causing the bottom formwork 3 to move inward and detach from the truss-type cast-in-place box culvert. The vertical hydraulic rod 8 is then controlled to retract and move, causing the middle formwork 1 to move downward and detach from the truss-type cast-in-place box culvert. The vertical hydraulic rod 8 drives the first connecting rod 15 to move, the first connecting rod 15 drives the upper connecting rod 19 to swing, the upper connecting rod 19 drives the middle connecting rod 20 to swing, the middle connecting rod 20 drives the cross groove 18 to move along the piston rod of the vertical hydraulic rod 8, the middle connecting rod 20 drives the lower connecting rod 22 to swing, the cross groove 18 drives the U-shaped shaft 17 and the second connecting rod 16 to move, when the U-shaped shaft 17 moves along the vertical groove 10, the U-shaped shaft 17 drives the side template 2 to move downward, when the U-shaped shaft 17 enters the arc groove 11, the side template 2 moves along the direction of the arc groove 11, the U-shaped shaft 17 drives the second connecting rod 16 to move along the cross groove 18, so that the side template 2 is separated from the top plate and side wall of the truss-type cast-in-place box culvert, which facilitates the transfer of this device and the next section of pouring.
[0041] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.
Claims
1. A truss-type cast-in-place box culvert formwork system, characterized in that, include: Support U plate (4), the support U plate (4) connects two sets of symmetrical vertical plates (7); A set of vertical hydraulic rods (8) are respectively connected to the support U plate (4), the piston rods of the set of vertical hydraulic rods (8) are respectively connected to the first connecting rod (15), and the piston rods of the set of vertical hydraulic rods (8) are respectively connected to the intermediate template (1). Two sets of symmetrical horizontal hydraulic rods (6) are respectively connected to the support U plate (4), and the piston rods of the two sets of symmetrical horizontal hydraulic rods (6) are respectively connected to the bottom template (3). Symmetrical side templates (2) are connected to a set of guide crossbars (14), each guide crossbar (14) is connected to a guide tube (13), each guide tube (13) is connected to a slider (12), and each slider (12) is nested in the corresponding vertical plate (7).
2. The truss-type cast-in-place box culvert formwork system according to claim 1, characterized in that: A set of vertical hydraulic rods (8) are respectively connected to lower blocks (21), each lower block (21) is rotatably connected to a lower connecting rod (22), each lower connecting rod (22) is rotatably connected to a middle connecting rod (20), the center of each middle connecting rod (20) is rotatably connected to a cross groove (18), the piston rod of each vertical hydraulic rod (8) passes through the corresponding cross groove (18), each middle connecting rod (20) is rotatably connected to an upper connecting rod (19), and each upper connecting rod (19) is rotatably connected to the first The connecting rod (15) and the symmetrical side template (2) are respectively connected to a set of U-shaped shafts (17). Each U-shaped shaft (17) is respectively connected to a second connecting rod (16). Each U-shaped shaft (17) is respectively set in the vertical groove of the corresponding cross groove (18). The symmetrical second connecting rod (16) is respectively set in the horizontal groove of the set of cross grooves (18). Each vertical plate (7) is respectively provided with a vertical groove (10). The circular shaft of each U-shaped shaft (17) is respectively matched with the corresponding vertical groove (10).
3. The truss-type cast-in-place box culvert formwork system according to claim 2, characterized in that: Each of the vertical plates (7) is provided with an arc groove (11), each of the vertical grooves (10) is connected to the corresponding arc groove (11), and the circular shaft of each U-shaped shaft (17) is matched with the corresponding arc groove (11).
4. The truss-type cast-in-place box culvert formwork system according to claim 1, characterized in that: The symmetrical bottom template (3) is connected to the corresponding side template (2).
5. A truss-type cast-in-place box culvert formwork system according to claim 1, characterized in that: The intermediate template (1) is connected to the symmetrical side template (2).
6. The truss-type cast-in-place box culvert formwork system according to claim 1, characterized in that: The supporting U-plate (4) is equipped with mounting seats for two sets of evenly distributed wheels (5).
Citation Information
Patent Citations
Porous cast-in-place box culvert bottom plate template system
CN214883071U