Internal mold supporting device for prefabricating box girder

Abstract

The utility model discloses an internal mold supporting device for prefabricating a box girder, which comprises a mounting plate, a quick assembly is arranged at the top of the mounting plate, the quick assembly comprises a threaded rod and a first moving plate, the threaded rod is connected to the top of the mounting plate through a bearing, and the first moving plate is connected to the side wall of the threaded rod through threads. First U-shaped frames are fixedly installed on the two sides of the first movable plate respectively, and connecting rods are hinged to the inner side walls of the first U-shaped frames. According to the internal mold supporting device for prefabricating the box girder, the whole internal mold supporting device can be rapidly fixed in an internal mold through the arranged rapid assembly assembly, fixing is easy and convenient, fixing work can be easily completed by one worker, unnecessary workload is effectively reduced, the working efficiency of the worker is guaranteed, work can be completed within the shortest time, and the working efficiency of the worker is improved. And the working process is not affected, the using effect is improved accordingly, and application and popularization are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of precast box girder technology, specifically an internal mold support device for precast box girders. Background Technology

[0002] Precast box girders are concrete box girder structures prefabricated in a prefabrication yard. They typically follow standardized design and production processes. Composed of high-strength concrete and steel reinforcement, they possess excellent load-bearing capacity and bending resistance. Precast box girders are widely used in bridge construction and offer the following advantages: Quality is easier to control: The standardized production environment of the prefabrication yard better ensures the concrete mix ratio and steel reinforcement arrangement, thus guaranteeing stable box girder quality. For example, some large precast beam plants employ advanced equipment and rigorous quality inspection processes, ensuring that all indicators of the produced precast box girders meet design requirements, accelerating construction progress: During on-site bridge construction, precast box girders can be directly transported to designated locations for installation, significantly shortening on-site construction time.

[0003] Patent publication number "CN213137190U" discloses "An internal mold support device, specifically relating to an internal mold support device for precast box girders. This utility model aims to solve the problems of currently used precast box girder internal mold supports having fixed structural dimensions and shapes, making them unusable between different box girders, resulting in low disassembly efficiency and poor safety. This utility model includes a support rod mechanism and a stabilizing rod mechanism, both of which are quadrilateral structures. The stabilizing rod mechanism is installed within the support rod mechanism, and the four corners of the support rod mechanism are hinged to the four straight sides of the stabilizing rod mechanism. This utility model belongs to the field of road and bridge construction."

[0004] To address the aforementioned issues, existing endometrial support devices require multiple adjustments to complete the support work. In actual installation, multiple workers need to work simultaneously, which affects the support effect. Furthermore, disassembling the entire device after prefabrication is also troublesome, and it is inconvenient to connect multiple support devices together. In actual use, it is difficult to control the spacing between multiple support devices.

[0005] To address this problem, the present invention provides an internal mold support device for precast box girders. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an internal mold support device for precast box girders, which solves the problems of existing internal mold support devices requiring multiple layers of adjustment to complete the support work, requiring multiple workers to work simultaneously during actual installation, which affects the support effect, and the same troublesome disassembly of the whole device after prefabrication.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an internal mold support device for precast box girders, comprising an installation plate, a quick-assembly assembly on the top of the installation plate, the quick-assembly assembly comprising a threaded rod and a movable plate, the threaded rod being connected to the top of the installation plate via a bearing, the movable plate being threadedly connected to the side wall of the threaded rod, U-shaped frames being fixedly installed on both sides of the movable plate, a connecting rod being hinged to the inner side wall of the U-shaped frame, a support plate being provided on one side of the connecting rod, a second U-shaped frame being fixedly installed on one side of the support plate, the connecting rod being hinged to the second U-shaped frame, sliding frames being fixedly installed on the inner top and bottom walls of the support plate, the sliding frames being slidably connected to the installation plate, and limit plates being fixedly installed on both sides of the installation plate.

[0008] Furthermore, connecting components are respectively provided on both sides of the support plate. The connecting components include a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are respectively fixedly installed on both sides of the support plate. A slot is opened on one side of the first connecting plate, and a fixed frame is fixedly installed on one side of the second connecting plate. A fixed plate is fixedly installed on the inner side wall of the fixed frame. A spring is fixedly installed on the top of the fixed plate. A second movable plate is fixedly connected to the top of the spring. A hemispherical block is fixedly installed on the top of the second movable plate. The hemispherical block is engaged with the slot.

[0009] The above technical solution facilitates the connection of multiple support devices and ensures a secure connection.

[0010] Furthermore, the inner wall of the slot is polished, and the number of slots matches the number of hemispherical blocks.

[0011] By adopting the above technical solution, the snap-fit ​​effect can be improved and made more reliable.

[0012] Furthermore, a crank handle is fixedly connected to the side wall of the threaded rod, and the crank handle is located above the moving plate.

[0013] By adopting the above technical solution, the threaded rod can be easily rotated using a crank handle.

[0014] Furthermore, the quick-release assembly also includes an arc-shaped groove formed on the top of the sliding frame.

[0015] The above technical solution is adopted to facilitate matching of threaded rods and prevent interference.

[0016] Furthermore, the outer wall of the support plate is provided with an anti-slip pad, which is bonded to the support plate.

[0017] The above technical solution can achieve anti-slip and anti-wear effects, and the bonding method is simple and reliable.

[0018] Furthermore, the number of anti-slip pads is three, and the three anti-slip pads are arranged sequentially among each other.

[0019] The above technical solution can achieve an anti-slip effect, thus improving the support effect.

[0020] Beneficial effects

[0021] This utility model provides an internal mold support device for precast box girders. Compared with the prior art, it has the following advantages:

[0022] 1. The precast box girder internal mold support device, through the set quick-installation components, can quickly fix the whole body inside the inner mold. The fixing is simple and convenient. One worker can easily complete the fixing work, effectively reducing unnecessary workload and ensuring the worker's work efficiency. The work can be completed in the shortest time without affecting the work progress. The effect of use will also be increased, making it easy to promote and use.

[0023] 2. The precast box girder internal formwork support device, through the set connection components, can quickly position and install multiple support devices, making the installation more convenient and simple and reliable after installation, so as to complete the connection work. After connection, the spacing between multiple support devices can be exactly the same, resulting in better support effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0027] Figure 3 This is a side view of the overall structure of this utility model;

[0028] Figure 4 This is a utility model Figure 3 Enlarged view of the structure at point B.

[0029] In the diagram: 1. Mounting plate; 2. Quick-release assembly; 21. Threaded rod; 22. Moving plate one; 23. U-shaped frame one; 24. Connecting rod; 25. Support plate; 26. U-shaped frame two; 27. Sliding frame; 28. Limiting plate; 29. ​​Arc groove; 3. Anti-slip pad; 4. Crank handle; 5. Connecting assembly; 51. Connecting plate one; 52. Connecting plate two; 53. Slot; 54. Fixing frame; 55. Fixing plate; 56. Spring; 57. Moving plate two; 58. Hemispherical block. Detailed Implementation

[0030] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0031] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Reference Figures 1 to 4 This application provides an internal mold support device for precast box girders, including an installation plate 1. A quick-assembly assembly 2 is provided on the top of the installation plate 1. The quick-assembly assembly 2 includes a threaded rod 21 and a movable plate 22. The threaded rod 21 is connected to the top of the installation plate 1 by a bearing. The movable plate 22 is threadedly connected to the side wall of the threaded rod 21. U-shaped frames 23 are fixedly installed on both sides of the movable plate 22. A connecting rod 24 is hinged to the inner side wall of the U-shaped frame 23. A support plate 25 is provided on one side of the connecting rod 24. A second U-shaped frame 26 is fixedly installed on one side of the support plate 25. The connecting rod 24 and the second U-shaped frame 26 are hinged together. A sliding frame 27 is fixedly installed on the inner top wall and inner bottom wall of the support plate 25. The sliding frame 27 is slidably connected to the installation plate 1. Limiting plates 28 are fixedly installed on both sides of the installation plate 1. The quick-assembly assembly 2 also includes an arc groove 29, which is formed on the top of the sliding frame 27.

[0033] In this embodiment, the support plate 25 is first placed inside the inner mold. Then, turning the crank handle 4 can drive the threaded rod 21 to rotate, thereby allowing the threaded rod 21 to drive the moving plate 22 to move. The moving plate 22 can then drive the connecting rod 24 to move via the U-shaped frame 23. The connecting rod 24 can then drive the support plate 25 to move via the U-shaped frame 26. The support plate 25 will slide on the side wall of the mounting plate 1 via the sliding frame 27, so that the support plate 25 can support the inner wall of the inner mold, resulting in a better preparation effect of the inner mold for the precast box girder.

[0034] Reference Figures 1 to 4 In one aspect of this embodiment, connecting components 5 are respectively provided on both sides of the support plate 25. The connecting components 5 include a first connecting plate 51 and a second connecting plate 52. The first connecting plate 51 and the second connecting plate 52 are respectively fixedly installed on both sides of the support plate 25. A slot 53 is provided on one side of the first connecting plate 51. A fixing frame 54 is fixedly installed on one side of the second connecting plate 52. A fixing plate 55 is fixedly installed on the inner side wall of the fixing frame 54. A spring 56 is fixedly installed on the top of the fixing plate 55. A movable plate 57 is fixedly connected to the top of the spring 56. A hemispherical block 58 is fixedly installed on the top of the movable plate 57. The hemispherical block 58 is engaged with the slot 53. The inner side wall of the slot 53 is polished. The number of slots 53 and hemispherical blocks 58 are matched.

[0035] In this embodiment, the two support plates 25 are then pushed to move towards the center, so that the fixed frame 54 can be inserted into the interior of the connecting plate 1 51. This allows the hemispherical block 58 to drive the moving plate 2 57 to compress the spring 56 and retract, so that the hemispherical block 58 can be engaged with the slot 53 to complete the connection between the multiple support plates 25. The connection is simple and convenient, and the spacing between the multiple support plates 25 can be made exactly the same after connection to ensure the support effect.

[0036] Reference Figures 1 to 4 In one aspect of this embodiment, a crank 4 is fixedly connected to the side wall of the threaded rod 21, and the crank 4 is located above the movable plate 22.

[0037] In this embodiment, the crank handle 4 is used to facilitate the rotation of the threaded rod 21, making its rotation easier.

[0038] Reference Figures 1 to 4 In one aspect of this embodiment, an anti-slip pad 3 is provided on the outer side wall of the support plate 25. The anti-slip pad 3 is bonded to the support plate 25. There are three anti-slip pads 3, and the three anti-slip pads 3 are arranged sequentially.

[0039] In this embodiment, it can provide an anti-slip effect and also improve the support effect of the support plate 25.

[0040] Working principle: First, the support plate 25 is placed inside the inner mold. Then, turning the crank handle 4 can drive the threaded rod 21 to rotate, which in turn drives the moving plate 22 to move. The moving plate 22 can then drive the connecting rod 24 through the U-shaped frame 23, and the connecting rod 24 can then drive the support plate 25 through the U-shaped frame 26. The support plate 25 will slide on the side wall of the mounting plate 1 through the sliding frame 27, so that the support plate 25 can support the inner wall of the inner mold, making the inner mold better for the preparation of the precast box girder.

[0041] Then, push the two support plates 25 to move towards the middle, so that the fixed frame 54 can be inserted into the interior of the connecting plate 1 51, thereby allowing the hemispherical block 58 to drive the moving plate 2 57 to compress the spring 56 and retract, so that the hemispherical block 58 can be engaged with the slot 53 to complete the connection between multiple support plates 25. The connection is simple and convenient, and the spacing between multiple support plates 25 can be made exactly the same after connection to ensure the support effect.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inner mold support device for precast box girders, comprising an mounting plate (1), characterized in that: The top of the mounting plate (1) is provided with a quick-release assembly (2), which includes a threaded rod (21) and a movable plate (22). The threaded rod (21) is connected to the top of the mounting plate (1) by a bearing, and the movable plate (22) is threaded to the side wall of the threaded rod (21). U-shaped frames (23) are fixedly installed on both sides of the movable plate (22), and connecting rods (24) are hinged to the inner side wall of the U-shaped frames (23). 4) A support plate (25) is provided on one side of the connecting rod (24), and a U-shaped frame (26) is fixedly installed on one side of the support plate (25). The connecting rod (24) and the U-shaped frame (26) are hinged together. A sliding frame (27) is fixedly installed on the inner top wall and inner bottom wall of the support plate (25). The sliding frame (27) is slidably connected to the mounting plate (1). Limiting plates (28) are fixedly installed on both sides of the mounting plate (1).

2. The inner mold support device for precast box girders according to claim 1, characterized in that: The support plate (25) is provided with connecting components (5) on both sides. The connecting components (5) include a first connecting plate (51) and a second connecting plate (52). The first connecting plate (51) and the second connecting plate (52) are fixedly installed on both sides of the support plate (25). A slot (53) is provided on one side of the first connecting plate (51). A fixed frame (54) is fixedly installed on one side of the second connecting plate (52). A fixed plate (55) is fixedly installed on the inner side wall of the fixed frame (54). A spring (56) is fixedly installed on the top of the fixed plate (55). A movable plate (57) is fixedly connected to the top of the spring (56). A hemispherical block (58) is fixedly installed on the top of the movable plate (57). The hemispherical block (58) is engaged with the slot (53).

3. The inner mold support device for precast box girders according to claim 2, characterized in that: The inner wall of the slot (53) is polished, and the number of the slot (53) and the number of the hemispherical blocks (58) are matched.

4. The inner mold support device for precast box girders according to claim 1, characterized in that: A crank handle (4) is fixedly connected to the side wall of the threaded rod (21), and the crank handle (4) is located above the moving plate (22).

5. The inner mold support device for precast box girders according to claim 1, characterized in that: The quick-installation assembly (2) also includes an arc-shaped groove (29) which is formed on the top of the sliding frame (27).

6. The inner mold support device for precast box girders according to claim 1, characterized in that: The outer wall of the support plate (25) is provided with an anti-slip pad (3), and the anti-slip pad (3) is bonded to the support plate (25).

7. The inner mold support device for precast box girders according to claim 6, characterized in that: The number of anti-slip pads (3) is three, and the three anti-slip pads (3) are arranged sequentially between each other.

Images