A suspended template limiting mechanism and template system

By designing a suspended formwork limiting mechanism, a stable skeleton system is formed by horizontal supports, vertical supports, and triangular support frames, which solves the problem of the suspended formwork being difficult to fix and achieves structural stability and integrity in the construction of the box culvert's low sidewall.

CN224451439UActive Publication Date: 2026-07-03CHINA RAILWAY NO 2 ENG GROUP CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY NO 2 ENG GROUP CO LTD
Filing Date
2025-08-08
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

During the construction of the low sidewall of the box culvert, the inner formwork lacks a stable supporting foundation, resulting in suspended formwork that is difficult to fix and prone to loosening.

Method used

A suspended template limiting mechanism is adopted, including horizontal supports, vertical supports, stabilizing support frames and triangular support frames, forming a stable skeleton system. The triangular support frames support the back of the inner template to ensure that the template does not loosen.

Benefits of technology

It effectively prevents the inner formwork from deforming during the pouring of the low side wall, ensuring structural stability and integrity. It is easy to use and has good results.

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Abstract

This utility model relates to the field of box culvert construction, specifically a suspended formwork limiting mechanism. Horizontal supports are spaced along the length of the box culvert, spanning the inner and outer formwork of the low sidewalls. Vertical supports are connected to the foundation and to the horizontal supports. One end of each horizontal support is connected to a triangular support frame, which abuts against the back of the inner formwork. The other end of the horizontal support is connected to a stabilizing support frame, which abuts against the slope of the foundation pit. This utility model forms a stable framework system by setting up horizontal supports, vertical supports, and stabilizing support frames. This framework system extends over the inner formwork and is supported by the triangular support frames against the back of the inner formwork, providing additional limiting for the inner formwork and ensuring it does not loosen. Simultaneously, the stable triangular support frame structure can stably bear the lateral pressure acting on the inner formwork during the pouring of the low sidewalls, preventing deformation. This limiting mechanism has a simple structure, is easy to use, and has good performance.
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Description

Technical Field

[0001] This utility model relates to the field of box culvert construction, and in particular to a suspended formwork limiting mechanism and formwork system. Background Technology

[0002] Box culverts are widely used in modern urban construction and transportation infrastructure as an important underground drainage and passageway facility. The sidewalls of a box culvert, as a key structural component connecting the bottom and top slabs, significantly impact the overall stability and waterproofing performance of the culvert. For sidewall construction, the sidewalls and bottom slab are typically poured separately; that is, the bottom slab is constructed first, and then the sidewalls are built on the foundation of the bottom slab. While this method facilitates the installation and construction of the sidewall formwork, it easily leads to the presence of construction joints, thus affecting the integrity and durability of the overall structure.

[0003] Therefore, a construction method has emerged in the industry where the base slab and bottom sidewalls are cast together, with the bottom sidewalls being called low sidewalls. This method significantly improves the overall integrity and stability of the structure by reducing the number of construction joints. However, this construction method also brings new challenges. Since the base slab has not yet been cast, the formwork on the inside of the low sidewalls lacks a stable supporting foundation, resulting in suspended formwork that is difficult to fix and prone to loosening. Utility Model Content

[0004] The purpose of this utility model is to address the problem in the existing technology that the inner formwork of the box culvert low sidewall construction lacks a stable supporting foundation, resulting in suspended formwork that is difficult to fix and prone to loosening, and to provide a suspended formwork limiting mechanism and formwork system.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, this utility model provides a suspended formwork limiting mechanism, comprising a plurality of horizontal supports, a plurality of vertical supports, a plurality of triangular support frames, and a plurality of stabilizing support frames; the horizontal supports are spaced apart along the length of the box culvert, and each horizontal support is used to span the inner and outer formwork of the low side wall of the box culvert; the vertical supports are connected to the foundation, and each vertical support is connected to one of the horizontal supports; one end of each horizontal support is connected to a triangular support frame, which is used to abut against the back of the inner formwork; the other end of each horizontal support is connected to a stabilizing support frame, which is used to abut against the slope of the foundation pit.

[0007] The suspended formwork limiting mechanism described in this utility model forms a stable skeleton system by setting up the horizontal support, the vertical support, and the stable support frame. The skeleton system extends over the inner formwork and is supported on the back of the inner formwork by the triangular support frame, providing additional limiting for the inner formwork and ensuring that the inner formwork does not loosen. At the same time, the triangular support frame has a stable structure and can stably bear the lateral pressure acting on the inner formwork during the pouring of the low side wall, preventing deformation. This limiting mechanism has a simple structure, is easy to use, and has good effect.

[0008] As a preferred technical solution of this utility model, the vertical support is connected to the installation base of the outer template.

[0009] As a further preferred technical solution of this utility model, the vertical support is connected to the outer template.

[0010] As a preferred technical solution of this utility model, the triangular support frame includes a vertical rod and an inclined rod. The top of the vertical rod is connected to the horizontal support, and the two ends of the inclined rod are respectively connected to the end of the horizontal support and the bottom of the vertical rod. The vertical rod is used to abut against the back of the inner template.

[0011] As a further preferred technical solution of this utility model, the horizontal support, the vertical support, the vertical rod and the diagonal rod are all made of steel bars and are connected by welding.

[0012] As a preferred technical solution of this utility model, the stable support frame includes a threaded sleeve and a screw, one end of the threaded sleeve is connected to the horizontal support, and the other end is threaded to the screw.

[0013] As a further preferred technical solution of this utility model, the movable end of the screw is connected to a support plate.

[0014] As a further preferred technical solution of this utility model, the threaded sleeve includes a steel sleeve and a nut, the nut is connected to one end of the steel sleeve, the other end of the steel sleeve is connected to the cross bracket, and the screw is threadedly connected to the nut.

[0015] Secondly, this utility model also provides a template system, including an inner template, an outer template, and a suspended template limiting mechanism as described in any of the above. The inner template and the outer template are arranged opposite to each other, and a steel cage for a box culvert low side wall is provided between the inner template and the outer template. The bottom of the inner template is provided with the steel cage of the box culvert bottom plate.

[0016] As a preferred technical solution of this utility model, the inner template and the outer template are made of steel template.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] The suspended formwork limiting mechanism of this utility model forms a stable skeleton system by setting up the horizontal support, the vertical support, and the stable support frame. The skeleton system extends over the inner formwork and is supported on the back of the inner formwork by the triangular support frame, which provides additional limiting for the inner formwork and ensures that the inner formwork does not loosen. At the same time, the triangular support frame has a stable structure and can stably bear the lateral pressure acting on the inner formwork during the pouring of the low side wall, preventing deformation. This limiting mechanism has a simple structure, is easy to use, and has good effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the suspended template limiting mechanism;

[0020] Figure 2 This is a reference diagram showing the usage status of the suspended template limiting mechanism.

[0021] Marked in the image:

[0022] 01-Inner template;

[0023] 02-Outer template;

[0024] 03-Reinforcing cage;

[0025] 1-Horizontal support;

[0026] 2-Vertical support;

[0027] 3-Triangular support frame, 31-Vertical rod, 32-Diagonal rod;

[0028] 4-Threaded sleeve;

[0029] 5 - Screw, 51 - Support plate. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] In related technologies, the inner formwork of the low sidewalls of box culverts lacks a stable supporting foundation, resulting in suspended formwork that is difficult to fix and prone to loosening. Therefore, the technical solution of this application was developed, which is described below in conjunction with... Figures 1 to 2 To elaborate.

[0037] Example 1

[0038] like Figures 1 to 2 As shown, the suspended template limiting mechanism of this utility model includes several horizontal supports 1, several vertical supports 2, several triangular support frames 3, and several stable support frames.

[0039] The horizontal supports 1 are spaced apart along the length of the box culvert, such as Figure 2 As shown, each of the horizontal supports 1 is used to span the inner template 01 and the outer template 02 of the low side wall of the box culvert.

[0040] like Figure 2 As shown, the vertical support 2 is connected to the foundation. For example, the vertical support 2 can be connected to the installation foundation of the outer template 02. For more stable support, the vertical support 2 can also be connected to the outer template 02, for example, by welding or fastening. Each vertical support 2 is connected to one horizontal support 1.

[0041] In one alternative implementation, such as Figures 1 to 2 As shown, the horizontal support 1 and the vertical support 2 are connected to form a cross, which facilitates on-site assembly and saves costs.

[0042] like Figures 1 to 2 As shown, each of the horizontal supports 1 is connected to a triangular support frame 3 at one end. The triangular support frame 3 includes a vertical rod 31 and a diagonal rod 32. The top of the vertical rod 31 is connected to the horizontal support 1, and the two ends of the diagonal rod 32 are respectively connected to the end of the horizontal support 1 and the bottom of the vertical rod 31. That is, the vertical rod 31, the diagonal rod 32, and a part of the horizontal support 1 are connected to form a triangular member. The vertical rod 31 is used to abut against the back of the inner template 01. The horizontal support 1, the vertical support 2, the vertical rod 31, and the diagonal rod 32 are all made of steel bars and are connected by welding.

[0043] like Figure 2As shown, each of the horizontal supports 1 is connected to a stabilizing support frame at its other end, the stabilizing support frame being used to abut against the slope of the foundation pit; the stabilizing support frame includes a threaded sleeve 4 and a screw 5, one end of the threaded sleeve 4 is connected to the horizontal support 1, and the other end is threadedly connected to the screw 5, the movable end of the screw 5 is connected to a support plate 51; optionally, the threaded sleeve 4 includes a steel sleeve and a nut, the nut is connected to one end of the steel sleeve, the other end of the steel sleeve is connected to the horizontal support 1, and the screw 5 is threadedly connected to the nut.

[0044] The suspended formwork limiting mechanism described in this embodiment forms a stable skeleton system by setting up the horizontal support 1, the vertical support 2, and the stable support frame. The skeleton system extends over the inner formwork 01 and is supported on the back of the inner formwork 01 by the triangular support frame 3, which provides additional limiting for the inner formwork 01 and ensures that the inner formwork 01 does not loosen. At the same time, the triangular support frame 3 has a stable structure and can stably bear the lateral pressure acting on the inner formwork 01 during the pouring of the low side wall, preventing deformation. This limiting mechanism has a simple structure, is easy to use, and has good effect.

[0045] Example 2

[0046] like Figures 1 to 2 As shown, the template system of this utility model includes an inner template 01, an outer template 02, and a suspended template limiting mechanism as described in Embodiment 1. The inner template 01 and the outer template 02 are arranged opposite to each other, and a steel cage 03 for the low side wall of the box culvert is provided between the inner template 01 and the outer template 02. The bottom of the inner template 01 is provided with the steel cage 03 for the bottom plate of the box culvert. The inner template 01 and the outer template 02 are made of steel templates.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A formwork limiting mechanism, characterized in that, include: Several horizontal supports (1) are spaced apart along the length of the box culvert, and each of the horizontal supports (1) is used to cross the inner template (01) and outer template (02) of the low side wall of the box culvert. Several vertical supports (2) are connected to the foundation, and each of the vertical supports (2) is connected to one of the horizontal supports (1); Several triangular support frames (3), one end of each of the horizontal supports (1) is connected to one of the triangular support frames (3), and the triangular support frames (3) are used to abut against the back of the inner template (01); A plurality of stabilizing support frames, each of the horizontal supports (1) having its other end connected to one of the stabilizing support frames, the stabilizing support frames being used to abut against the slope of the foundation pit.

2. The formwork limiting mechanism according to claim 1, wherein The vertical support (2) is connected to the mounting base of the outer template (02).

3. The suspended template limiting mechanism according to claim 2, characterized in that, The vertical support (2) is connected to the outer template (02).

4. The formwork limiting mechanism according to claim 1, wherein The triangular support frame (3) includes a vertical rod (31) and a diagonal rod (32). The top of the vertical rod (31) is connected to the horizontal support (1), and the two ends of the diagonal rod (32) are respectively connected to the end of the horizontal support (1) and the bottom of the vertical rod (31). The vertical rod (31) is used to abut against the back of the inner template (01).

5. The formwork limiting mechanism according to claim 4, wherein The horizontal support (1), the vertical support (2), the vertical rod (31), and the diagonal rod (32) are all made of steel bars and are connected by welding.

6. The formwork limiting mechanism according to any one of claims 1 to 5, wherein The stabilizing support frame includes a threaded sleeve (4) and a screw (5). One end of the threaded sleeve (4) is connected to the horizontal support (1), and the other end is threaded to the screw (5).

7. The formwork limiting mechanism according to claim 6, wherein The movable end of the screw (5) is connected to a support plate (51).

8. The formwork limiting mechanism according to claim 6, wherein The threaded sleeve (4) includes a steel sleeve and a nut. The nut is connected to one end of the steel sleeve, and the other end of the steel sleeve is connected to the cross bracket (1). The screw (5) is threadedly connected to the nut.

9. A template system characterized in that, It includes an inner template (01), an outer template (02), and a suspended template limiting mechanism as described in any one of claims 1-8. The inner template (01) and the outer template (02) are arranged opposite to each other. A steel cage (03) for a box culvert low side wall is provided between the inner template (01) and the outer template (02). The bottom of the inner template (01) is provided with the steel cage (03) of the box culvert bottom plate.

10. The template system of claim 9, wherein, The inner template (01) and the outer template (02) are made of steel templates.