Prefabricated box girder reinforcement cage mounting jig frame

Abstract

The utility model discloses a prefabricated box girder steel reinforcement framework installation jig frame which comprises a base, an inclined strut and a stand column, the inclined strut and the stand column are arranged on the base, and a plurality of guiding round pipes are arranged on the inclined strut and arranged in parallel at equal intervals from top to bottom. Positioning cross rods are arranged in the guiding round pipe in a sliding mode, the multiple positioning cross rods are sequentially divided into three groups from top to bottom, and the ends of each group of positioning cross rods are connected with fixing rods respectively. The positioning cross rods are of a grouped split type design, so that the positioning cross rods can be disassembled and assembled for multiple times, the burden of single-time installation is reduced, and the positioning cross rods can be disassembled and assembled easily by a single person.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, and in particular to a precast box girder steel reinforcement skeleton installation frame. Background Technology

[0002] With the continuous development of highways in China, precast box girder construction technology has been widely used in bridge engineering construction, and its construction technology is constantly being improved. Among them, the reinforcement binding of precast box girders is the most labor-intensive process in the entire precast box girder construction. Traditionally, the reinforcement binding of precast box girders is carried out directly on the girder fabrication platform. Because the girder fabrication platforms are scattered on site, it is time-consuming and labor-intensive to transport semi-finished reinforcement bars. In addition, the bound reinforcement bars are not straight and the spacing is uneven. Furthermore, there are disadvantages such as the reinforcement bars being contaminated by the release agent of the steel plate of the girder fabrication platform and the long turnover period of the girder fabrication platform.

[0003] To address this issue, existing technology (patent publication number CN207432460U) proposes a precast box girder jig. The jig's positioning holes are located on the jig's diagonal braces and uprights. The multiple holes on the diagonal braces and jig reduce their strength. Furthermore, the positioning jig is an integral structure with large dimensions and weight, requiring multiple people or machinery to install and dismantle it. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a precast box girder steel reinforcement skeleton installation frame. The positioning crossbars are designed in a grouped split type, so they can be disassembled and assembled in multiple steps, reducing the burden of a single installation. A single person can easily complete the disassembly and assembly of the positioning crossbars.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A precast box girder steel reinforcement skeleton installation frame includes a base, diagonal braces and columns set on the base, and multiple guide tubes are provided on the diagonal braces, which are arranged in parallel at equal intervals from top to bottom;

[0007] The guide tube is equipped with a slidable positioning crossbar. The multiple positioning crossbars are divided into three groups from top to bottom, and each group of positioning crossbars is connected to a fixing rod at its end.

[0008] Furthermore, the positioning crossbar is a steel pipe.

[0009] Furthermore, the positioning crossbar is welded and fixed to the diagonal brace.

[0010] Furthermore, the fixing rod is a steel bar, and the fixing rod is welded and fixed to the positioning crossbar.

[0011] Furthermore, the three sets of positioning crossbars are detachably connected as a single unit via a connecting assembly.

[0012] Furthermore, the connecting assembly includes a connecting rod and a pipe clamp. The first end of the connecting rod is fixedly provided with the top end of a fixing rod, and the pipe clamp is fixedly provided with the second end of the connecting rod. The pipe clamp is fixed to an adjacent positioning crossbar.

[0013] Furthermore, the pipe clamp includes an arc-shaped connecting part and a fastening part. The first end of the connecting part is provided with a fastening platform. The first end of the fastening part is rotatably connected to the second end of the connecting part, and the second end of the fastening part is fastened to the fastening platform.

[0014] Furthermore, the connecting part is provided with an arc-shaped groove, and an elastic ring is provided inside the arc-shaped groove.

[0015] The beneficial effects of this utility model are:

[0016] 1) The positioning crossbar is designed as a group of separate parts, so it can be disassembled and assembled in multiple steps, reducing the burden of a single installation. One person can easily complete the disassembly and assembly of the positioning crossbar. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the precast box girder steel reinforcement skeleton installation frame in an embodiment of this utility model, showing the structure of the frame before the positioning crossbar is installed.

[0018] Figure 2 A schematic diagram of the installation frame for the steel reinforcement skeleton of the precast box girder after the positioning crossbars have been set;

[0019] Figure 3 A schematic diagram of the installation frame for the precast box girder steel reinforcement skeleton after the positioning crossbars are connected as one piece by connecting components;

[0020] Figure 4 This is a schematic diagram showing the connection relationship between the connecting components and the positioning crossbar;

[0021] Figure 5 This is a 3D view of the pipe clamp;

[0022] Figure 6 This is a cross-sectional view of the pipe clamp;

[0023] In the diagram, 1 is the base; 2 is the diagonal brace; 3 is the column; 4 is the guide tube; 5 is the positioning crossbar; 6 is the fixing rod; 7 is the connecting component; 8 is the connecting rod; 9 is the pipe clamp; 10 is the connecting part; 11 is the fastening part; and 12 is the elastic ring. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See Figures 1-6 This utility model provides a technical solution:

[0026] Example 1:

[0027] like Figures 1-3 As shown, a precast box girder steel reinforcement skeleton installation frame includes a base 1, a diagonal brace 2 and a column 3 set on the base 1, and multiple guide round pipes 4 are provided on the diagonal brace, which are arranged in parallel at equal intervals from top to bottom.

[0028] The guide tube 4 is provided with a positioning crossbar 5, and the multiple positioning crossbars 5 are divided into three groups from top to bottom. The end of each group of positioning crossbars 5 is connected to a fixing rod 6.

[0029] The positioning crossbar 5 is a steel pipe.

[0030] The positioning crossbar 5 is welded and fixed to the diagonal brace 2.

[0031] The fixing rod 6 is a steel bar, and the fixing rod 6 is welded and fixed to the positioning crossbar 5.

[0032] Angle steel is provided on the base 1.

[0033] Working principle: The steel reinforcement cage of the precast box girder is set on the jig, the base 1 provides support for the steel reinforcement cage, and the positioning crossbar 5 provides positioning for the steel reinforcement cage.

[0034] When assembling and disassembling the positioning crossbar 5, it can be installed in groups from top to bottom or bottom to top. In this embodiment, twelve guide tubes 4 are provided, divided into three groups of four. Since the positioning crossbar 5 is a modular design with groups, it can be assembled and disassembled in multiple steps, reducing the burden of a single installation. One person can easily complete the assembly and disassembly of the positioning crossbar 5.

[0035] Example 2:

[0036] like Figures 4-6 As shown, in this embodiment, based on embodiment 1, the three sets of positioning crossbars 5 are detachably connected as one unit through the connecting assembly 7.

[0037] The connecting assembly 7 includes a connecting rod 8 and a pipe clamp 9. The first end of the connecting rod 8 is fixedly provided with the top end of the fixing rod 6, and the pipe clamp 9 is fixedly provided with the second end of the connecting rod 8. The pipe clamp 9 is fixed to the adjacent positioning crossbar 5.

[0038] The pipe clamp 9 includes an arc-shaped connecting part 10 and a fastening part 11. The first end of the connecting part 10 is provided with a fastening platform. The first end of the fastening part 11 is rotatably connected to the second end of the connecting part 10. The second end of the fastening part 11 (adapted to the fastening platform) is fastened to the fastening platform.

[0039] The connecting part 10 is provided with an arc-shaped groove, and an elastic ring 12 made of rubber is provided in the arc-shaped groove.

[0040] After the three sets of positioning crossbars 5 are installed, each set of positioning crossbars 5 is connected as one unit by the connecting component 7, which facilitates the overall position adjustment of the positioning crossbars 5. At the same time, only one or a set of positioning crossbars 5 needs to be fixed to complete the overall fixation of the positioning crossbars 5.

[0041] The fixing process of the positioning crossbar 5 is as follows: the buckle 11 is turned, the first end of the buckle 11 rotates around the second end of the connecting part 10, and then the pipe clamp 9 is opened. After the pipe clamp 9 is opened, the positioning crossbar 5 can enter the connecting part 10. After the positioning crossbar 5 enters the connecting part 10, the buckle 11 is turned in the opposite direction to close the buckle 11, thus completing the fixing of each set of positioning crossbars 5.

[0042] Simultaneously, the elastic ring is designed to deform under pressure, which can increase the friction between the pipe clamp and the positioning crossbar, thereby ensuring the stability of the pipe clamp when fixing the positioning crossbar.

[0043] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A precast box girder steel reinforcement frame installation jig, comprising a base, diagonal braces and columns mounted on the base, characterized in that: The diagonal brace is provided with multiple guide tubes, which are arranged in parallel at equal intervals from top to bottom. The guide tube is equipped with a slidable positioning crossbar. The multiple positioning crossbars are divided into three groups from top to bottom, and each group of positioning crossbars is connected to a fixing rod at its end.

2. The precast box girder reinforcement cage installation jig according to claim 1, characterized in that: The positioning crossbar is made of steel pipe.

3. The precast box girder reinforcement cage installation jig according to claim 1, characterized in that: The positioning crossbar is welded and fixed to the diagonal brace.

4. The precast box girder reinforcement cage installation jig according to claim 2, characterized in that: The fixing rod is a steel bar, and the fixing rod is welded and fixed to the positioning crossbar.

5. The precast box girder reinforcement cage installation jig according to claim 1, characterized in that: The three sets of positioning crossbars can be detachably connected as one unit via a connecting assembly.

6. The precast box girder reinforcement cage installation jig according to claim 5, characterized in that: The connecting assembly includes a connecting rod and a pipe clamp. The first end of the connecting rod is fixedly provided with the top end of a fixing rod, and the pipe clamp is fixedly provided with the second end of the connecting rod. The pipe clamp is fixed to an adjacent positioning crossbar.

7. The precast box girder reinforcement cage installation jig according to claim 6, characterized in that: The pipe clamp includes a fastening part and an arc-shaped connecting part. The first end of the connecting part is provided with a snap-fit ​​platform. The first end of the fastening part is rotatably connected to the second end of the connecting part, and the second end of the fastening part is snap-fitted to the snap-fit ​​platform.

8. The precast box girder reinforcement cage installation jig according to claim 7, characterized in that: The connecting part is provided with an arc-shaped groove, and an elastic ring is provided inside the arc-shaped groove.

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