Prefabricated box girder inner mold fixing device

Abstract

The utility model provides a precast box girder internal mold fixing device which comprises a fixing rod installed on a pedestal, a pull rod installed on the fixing rod in a nested mode and a pressing block limited above the pull rod through a bolt, internal threads are arranged in the fixing rod, external threads are arranged at the two ends of the pull rod, and the diameter of an inner hole of the fixing rod is the same as the outer diameter of the pull rod; the pressing block comprises two symmetrical channel steel plates with outward openings and connecting plates for connecting the two channel steel plates, a traction hole is defined by the two channel steel plates and the two connecting plates, and the pull rod penetrates through the traction hole. The pressing block is composed of the two channel steel plates with the openings facing outwards and the connecting plate, a traction hole is formed, and a pull rod can penetrate through the traction hole. According to the design, the strength of the pressing block is guaranteed, and the pressing block is light, flexible and convenient to operate. And compared with a traditional heavy pressing block, the device is lighter, the carrying and mounting workload is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of bridge construction, and more specifically, relates to a device for fixing an inner mold of a prefabricated box girder. Background Art

[0002] The prefabricated box girder inner formwork fixing device is designed to solve the problem of the inner formwork of the box girder floating up due to the lateral pressure of concrete during the prefabrication of box girders in bridge and other projects.

[0003] Patent application publication CN116690767A discloses a prefabricated box girder inner mold fixing device, including a fixed mold frame, the fixed mold frame includes a fixed rod arranged in the prefabricated table along the horizontal direction and a pull rod arranged on the fixed rod, the pull rod passes through the drainage hole of the box girder bottom plate along the vertical direction, and the pull rod is provided with a fixing part for pressing the inner mold onto the prefabricated table, but the fixing part of the prefabricated box girder inner mold fixing device is a long block and is relatively bulky.

[0004] The existing prefabricated box beam inner mold fixing device uses a pressing block to fix the inner mold to prevent floating. However, the pressing block is relatively bulky and the construction is time-consuming and labor-intensive. Utility Model Content

[0005] The technical problem to be solved by the present application is to provide a prefabricated box girder inner mold fixing device to solve the problem in the prior art that the pressing blocks of the existing prefabricated box girder inner mold fixing device are relatively bulky and the construction is time-consuming and labor-intensive.

[0006] In order to solve the above problems, the present application provides a prefabricated box girder inner mold fixing device, including: a fixing rod installed on a pedestal, a pull rod nested on the fixing rod, a pressure block limited above the pull rod by bolts, an internal thread is arranged in the fixing rod, and external threads are arranged at both ends of the pull rod. The inner hole diameter of the fixing rod is the same as the outer diameter of the pull rod; the pressure block includes two symmetrical channel steel plates with openings facing outward, and a connecting plate connecting the two channel steel plates, the two channel steel plates and the two connecting plates form a traction hole, and the pull rod passes through the traction hole.

[0007] The fixing device consists of a fixing rod, a tie rod, a pressure block and a bolt, and is easy to install and disassemble. Since the tie rod is connected to the fixing rod by a thread, the position of the tie rod on the fixing rod can be easily adjusted to adapt to inner molds of different heights and positions. The pressure block is composed of two channel steel plates with openings facing outward and a connecting plate, forming a traction hole so that the tie rod can pass through. This design not only ensures the strength of the pressure block, but also makes it light, flexible and easy to operate. The pressure block is fixed to the tie rod by bolts, thereby fixing the bottom rod of the inner mold and effectively preventing the inner mold from floating up. Compared with the traditional bulky pressure block, the device is lighter, reduces the workload of handling and installation, and improves the construction efficiency. Due to the flexibility of adjusting the tie rod, the device can adapt to inner molds of different specifications and sizes, improving the versatility of the device. Through the cooperation of bolts and pressure blocks, the device can firmly fix the inner mold to prevent it from floating up, ensuring the quality and safety of construction. The prefabricated box beam inner mold fixing device provided by the present application solves the problems of heavy and time-consuming and labor-intensive construction of traditional pressing blocks by simplifying the structure, flexibly adjusting and effectively fixing, and improves the construction efficiency and quality. Through further optimization and improvement, the practicality and safety of the device can be further improved.

[0008] As a preferred embodiment of the above solution of the present application, the pull rod is refined threaded steel.

[0009] As an improvement of the above solution of the present application, a limiting plate is further provided between the bolt and the pressing block.

[0010] As an improvement of the above solution of the present application, the outer periphery of the fixing rod is limited by two parallel first limiting rods and second limiting rods, wherein the two first limiting rods are located below the two second limiting rods, and the first limiting rods and the second limiting rods are pre-embedded in the pedestal.

[0011] As an improvement of the above solution of the present application, two third limit rods parallel to the y-direction of the pedestal are arranged above the two second limit rods, the third limit rods are located above the pedestal pull columns, and the third limit rods and the pedestal pull columns are pre-embedded in the pedestal.

[0012] As an improvement of the above solution of the present application, the first limiting rod, the second limiting rod and the third limiting rod are steel bars.

[0013] The beneficial effects of this application are:

[0014] The prefabricated box girder inner mold fixing device of the present application is composed of a fixing rod, a pull rod, a pressure block and bolts. The pressure block is composed of two channel steel plates with openings facing outward and a connecting plate, forming a traction hole so that the pull rod can pass through. This design not only ensures the strength of the pressure block, but also makes it light, flexible and easy to operate. The pressure block is fixed to the pull rod by bolts, thereby fixing the bottom rod of the inner mold and effectively preventing the inner mold from floating up. Compared with traditional bulky pressure blocks, the present device is lighter, reduces the workload of handling and installation, and improves construction efficiency. Due to the flexible adjustment of the pull rod, the device can adapt to inner molds of different specifications and sizes, improving the versatility of the device. Through the cooperation of bolts and pressure blocks, the device can firmly fix the inner mold to prevent it from floating up, thereby ensuring construction quality and safety.

[0015] In addition to the technical problems solved by the utility model described above, the technical features that constitute the technical solution and the advantages brought by the technical features of the technical solution, other technical problems that can be solved by the inner mold fixing device of the prefabricated box girder of the utility model, other technical features included in the technical solution and the advantages brought by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the inner mold fixing device of the prefabricated box beam of the present application when fixing the inner mold;

[0017] Figure 2 It is an axial side schematic diagram of the inner mold fixing device of the prefabricated box beam of the present application when fixing the inner mold;

[0018] Figure 3 yes Figure 2 Enlarged view of point a;

[0019] Figure 4 It is a schematic diagram of the inner mold fixing device of the prefabricated box beam of the present application;

[0020] Description of reference numerals:

[0021] 1. Fixing rod; 2. Pull rod; 3. Bolt; 4. Press block; 41. Channel steel plate; 42. Connecting plate; 5. Limiting plate; 61. First limiting rod; 62. Second limiting rod; 63. Third limiting rod;

[0022] 200, pedestal; 201, pedestal pull column; 300, inner mold; 301, bottom rod. DETAILED DESCRIPTION

[0023] The following will be combined with the attached Figures 1 to 4The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] The existing prefabricated box girder inner mold fixing device uses a pressing block to fix the inner mold to prevent floating, but the pressing block is relatively bulky and the construction is time-consuming and labor-intensive.

[0025] To solve this problem, Figure 1 An embodiment of a prefabricated box girder inner mold fixing device provided in the present application is illustrated, which comprises: a fixing rod 1 installed on a pedestal 200, a tie rod 2 nested and installed on the fixing rod 1, a pressure block 4 limited above the tie rod 2 by a bolt 3, an internal thread is arranged in the fixing rod 1, and external threads are arranged at both ends of the tie rod 2, and the inner hole diameter of the fixing rod 1 is the same as the outer diameter of the tie rod 2; the pressure block 4 comprises two symmetrical channel steel plates 41 with openings facing outward, and a connecting plate 42 connecting the two channel steel plates 41, the two channel steel plates 41 and the two connecting plates 42 form a traction hole, and the tie rod 2 passes through the traction hole.

[0026] In an embodiment of the present application, a plurality of prefabricated box girder inner mold fixing devices are installed on a pedestal 200 for fixing the prefabricated box girder inner mold. A fixing rod 1 of each prefabricated box girder inner mold fixing device is fixed on the pedestal 200. The fixing rod 1 has an internal thread, and the pull rod 2 has an external thread. One end of the pull rod 2 can be connected to the fixing rod 1 by a thread, and the other end of the pull rod 2 passes through a pressure block 4. The pressure block 4 is used to fix the bottom rod 301 of the inner mold 300. The bolt 3 is threadedly connected to the other end of the pull rod 2, thereby limiting the pressure block 4. The position of the inner mold 300 can be fixed by the bolt 3, the pressure block 4, the pull rod 2, and the fixing rod 1, thereby preventing the inner mold 300 from floating.

[0027] The pressing block 4 is composed of two symmetrical channel steel plates 41 with openings facing outward. This design allows the pressing blocks to be evenly distributed on both sides of the inner mold bottom rod 301, thereby providing stable support and fixing effects. The two channel steel plates 41 are connected together by a connecting plate 42 to form an integral structure. The position and number of the connecting plates 42 can be adjusted as needed to ensure the stability and strength of the pressing block 4. The two channel steel plates 41 and the connecting plate 42 together form a traction hole for the pull rod 2 to pass through, allowing the pull rod 2 to move up and down in the traction hole, thereby adjusting the degree of compression of the pressing block 4 on the inner mold bottom rod 301. Compared with traditional bulky pressing blocks, this pressing block composed of a combination of channel steel plates and connecting plates is lighter, reduces the workload of handling and installation, and improves construction efficiency.

[0028] The fixing device is composed of a fixing rod 1, a pull rod 2, a pressing block 4 and a bolt 3, and is easy to install and disassemble. Since the pull rod 2 is connected to the fixing rod 1 by a thread, the position of the pull rod 2 on the fixing rod 1 can be easily adjusted to adapt to the inner mold 300 of different heights and positions. The pressing block 4 is composed of two channel steel plates 41 with openings facing outward and a connecting plate 42, forming a traction hole so that the pull rod 2 can pass through. This design not only ensures the strength of the pressing block 4, but also makes it light, flexible and easy to operate. The pressing block 4 is fixed to the pull rod 2 by the bolt 3, thereby achieving the fixation of the bottom rod 301 of the inner mold 300, effectively preventing the inner mold from floating up.

[0029] It can be seen that compared with the traditional bulky pressing blocks, the device is more lightweight, reduces the workload of handling and installation, and improves construction efficiency. Due to the adjustment flexibility of the pull rod 2, the device can adapt to inner molds of different specifications and sizes, thereby improving the versatility of the device. Through the cooperation of the bolts 3 and the pressing blocks 4, the device can firmly fix the inner mold to prevent it from floating, thereby ensuring the construction quality and safety. The prefabricated box girder inner mold fixing device provided in the present application solves the problems of the traditional heavy pressing blocks and time-consuming and labor-intensive construction through the characteristics of simplified structure, flexible adjustment and effective fixing, thereby improving construction efficiency and quality. Through further optimization and improvement, the practicality and safety of the device can be further enhanced.

[0030] In an optional embodiment, the tie rod 2 is made of refined threaded steel. When the tie rod 2 is made of refined threaded steel, the prefabricated box beam inner mold fixing device will have higher strength and durability. Refined threaded steel, with its excellent mechanical properties and corrosion resistance, enables the tie rod 2 to withstand greater tension and pressure, thereby ensuring stable fixation of the inner mold.

[0031] In an optional embodiment, a limiting plate 5 is further provided between the bolt 3 and the pressing block 4. The limiting plate 5 can ensure that the bolt 3 completely limits the pressing block 4, ensure that the pressing block 4 maintains a stable position under the action of the bolt 3, and prevents it from moving due to vibration or other factors, thereby ensuring the fixing effect on the inner mold.

[0032] In an optional embodiment, the outer periphery of the fixing rod is limited by two parallel first limiting rods 61 and second limiting rods 62 , wherein the two first limiting rods 61 are located below the two second limiting rods 62 , and the first limiting rods 61 and the second limiting rods 62 are pre-embedded in the pedestal 200 .

[0033] The first limiting rod 61 and the second limiting rod 62 are parallel to each other, and the two groups of limiting rods are perpendicular to each other or at a specific angle, ensuring that the fixed rod cannot move in a limited direction. The first limiting rod 61 and the second limiting rod 62 are both pre-embedded in the pedestal 200. The pre-embedded method ensures the stability of the limiting rod 1 and the reliability of long-term use, avoiding safety problems caused by looseness or displacement. Through the coordinated use of the first limiting rod 61 and the second limiting rod 62, the movement of the fixed rod in multiple directions can be effectively limited, thereby meeting specific application requirements.

[0034] Two third limiting rods 63 parallel to the y direction of the pedestal are further arranged above the two second limiting rods 62 . The third limiting rods 63 are located above the pedestal pull column 201 . The third limiting rods 63 and the pedestal pull column 201 are pre-buried in the pedestal 200 .

[0035] The third limiting rod 63 is arranged above the two second limiting rods 62, and two third limiting rods 63 are arranged parallel to the y direction of the pedestal. The third limiting rod 63 and the pedestal pull column 201 are pre-buried in the pedestal 200. The stability of these structural parts and the reliability of long-term use are ensured. The addition of the third limiting rod 63 further enhances the stability of the fixing rod in the y direction. Together with the first limiting rod 61 and the second limiting rod 62, they form a three-dimensional limiting system for ensuring the precise position of the fixing rod 1 in multiple directions.

[0036] The first limiting rod, the second limiting rod and the third limiting rod 63 are steel bars. Steel bars have extremely high tensile strength and compressive strength and can withstand huge external loads, which is conducive to firmly limiting the fixing rod 1.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "setting", "connection", "installation" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be directly connected, or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A prefabricated box beam inner mold fixing device, characterized in that: include: A fixed rod (1) mounted on a pedestal (200), a pull rod (2) nested on the fixed rod (1), a pressure block (4) positioned above the pull rod (2) by a bolt (3), an internal thread being arranged inside the fixed rod (1), external threads being arranged at both ends of the pull rod (2), and an inner hole diameter of the fixed rod (1) being the same as an outer diameter of the pull rod (2); The pressing block (4) comprises two symmetrical channel steel plates (41) with openings facing outward, and a connecting plate (42) connecting the two channel steel plates (41); the two channel steel plates (41) and the two connecting plates (42) form a traction hole, and the pulling rod (2) passes through the traction hole.

2. The inner mold fixing device of the prefabricated box beam according to claim 1 is characterized in that: The pull rod (2) is made of refined threaded steel.

3. The inner mold fixing device of the prefabricated box beam according to claim 1 is characterized in that: A limiting plate (5) is also provided between the bolt (3) and the pressing block (4).

4. The inner mold fixing device of the prefabricated box beam according to claim 1 is characterized in that: The outer circumference of the fixing rod is limited by two parallel first limiting rods (61) and second limiting rods (62), wherein the two first limiting rods (61) are located below the two second limiting rods (62), and the first limiting rods (61) and the second limiting rods (62) are pre-buried in the pedestal (200).

5. The inner mold fixing device of the prefabricated box beam according to claim 4 is characterized in that: Two third limit rods (63) parallel to the y-direction of the pedestal are also arranged above the two second limit rods (62); the third limit rods (63) are located above the pedestal pull column (201); and the third limit rods (63) and the pedestal pull column (201) are pre-buried in the pedestal (200).

6. The inner mold fixing device of the prefabricated box beam according to claim 4 is characterized in that: The first limiting rod, the second limiting rod and the third limiting rod (63) are steel bars.

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