Cast-in-place box beam web steel bar positioning device

Abstract

The utility model discloses a cast-in-place box beam web steel bar positioning device which comprises a base, two height adjusting frames are installed on the base, and a positioning structure is jointly installed on the two height adjusting frames. The device is arranged at a target position through the base, the height of the positioning structure is adjusted through the two height adjusting frames, when the device is used, the n-shaped frame is fixed by screwing a second abutting screw, and an operator can accurately position the positioning structure according to the distance between target reinforcing steel bars and a measuring scale. The sleeves on the n-shaped frames are sequentially and transversely moved, the first abutting screws are screwed, the distance between the supporting assemblies reaches the target steel bar distance, the U-shaped frames on the two sides are used for containing steel bars, and the device is suitable for positioning of cast-in-place box beam web steel bars of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar positioning, in particular to a steel bar positioning device for a web of a cast-in-place box beam. Background Art

[0002] In bridge engineering, box girder is a common structural form. It is hollow inside and has flanges on both sides of the upper part. It has the advantages of flexible structure, large span, strong environmental adaptability and low maintenance cost. It is widely used in various highway bridge projects. Box girders are divided into two types: prefabricated box girders and cast-in-place box girders. Cast-in-place box girders are mostly used for large continuous bridges, and their construction quality and efficiency have an important impact on the overall bridge project. In the construction process of cast-in-place box girders, the positioning and binding of web reinforcement is a key process. The spacing between the web reinforcements of cast-in-place box girders is an important parameter determined according to the specific engineering design and specification standards. The setting of this spacing requires comprehensive consideration of multiple factors, including structural design requirements, plate width, plate thickness, steel bar diameter, and plate load. Therefore, for bridges of different sizes, the spacing between the web reinforcements of cast-in-place box girders is also different.

[0003] A web top steel bar positioning device with publication number CN216379156U, a support frame is fixedly installed at the bottom of the tire frame, a moving wheel is arranged at the bottom of the support frame, a clamping slot is opened on the top of the tire frame, the clamping slot is arranged in double rows and equidistantly, a bracket is clamped inside the clamping slot, a placement slot is opened on the top of the bracket, and a connecting block is arranged inside the placement slot; when the web steel bars need to be installed, two vertical web steel bars are clamped inside the clamping plate, the sliding clamping plate then squeezes the second spring, which is convenient for positioning the web steel bars, ensuring that the qualified rate of the web steel bars meets the standard, is conducive to the equal spacing control of the web steel bars, improves the linear smoothness and beauty, and can also improve the installation efficiency of the wing plate steel bars, cultivate the awareness of construction standardization, and then improve the qualified rate of the web steel bars installation, ensure the quality of construction, and improve the safety of the project; however, in the positioning device, the position of the positioning slot is fixed, so the limited steel bar spacing distance is also fixed, which is not suitable for use with cast-in-place box girders of different sizes. Utility Model Content

[0004] In order to solve the problems in the background technology, the utility model intends to provide a cast-in-place box beam web steel bar positioning device, which can be used for positioning the web steel bars of cast-in-place box beams of different sizes.

[0005] The technical solution adopted by the utility model is: a cast-in-place box beam web steel bar positioning device, comprising a base, two height adjustment frames are installed on the base, and a positioning structure is commonly installed on the two height adjustment frames;

[0006] The positioning structure comprises an n-shaped frame, and a plurality of supporting components are movably mounted on the n-shaped frame;

[0007] Each of the supporting components includes a sleeve, which is movably mounted on the n-shaped frame. A connecting rod is installed on each of the two opposite side walls of the sleeve, and a U-shaped frame is installed on the other end of the two connecting rods. A first tightening screw is installed on the lower wall of the sleeve, and the upper end of the first tightening screw is tightened against the bottom of the cross bar of the n-shaped frame.

[0008] Preferably, each of the height adjustment frames includes a fixed sleeve, which is installed on the base, and an adjustment rod is movably inserted on the fixed sleeve. A second tightening screw is installed on the outer wall of the fixed sleeve, and the end of the second tightening screw is tightened against the outer wall of the adjustment rod.

[0009] Preferably, an anti-slip rubber block is installed on the upper end of the first tightening screw.

[0010] Preferably, the cross-sectional shape of the adjusting rod is a rectangular structure.

[0011] Preferably, the two connecting rods are L-shaped structures.

[0012] Preferably, a U-shaped rubber pad is provided on the inner wall surface of the U-shaped frame.

[0013] The beneficial effects of the utility model are as follows: the device is placed at the target position through the base, and the height of the positioning structure is adjusted through two height adjustment frames. When in use, the n-shaped frame is first fixed by tightening the second tightening screw. The operator moves the sleeve on the n-shaped frame laterally in turn according to the target steel bar spacing and cooperates with the measuring ruler to tighten the first tightening screw so that the spacing between each support component reaches the target steel bar spacing. The U-shaped frames on both sides are used to place steel bars, which are suitable for positioning steel bars on the web of cast-in-place box beams of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from a top view angle.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model at an upward viewing angle.

[0016] Figure 3 It is a side sectional view of the support assembly of the utility model.

[0017] Figure 4 It is a side sectional view of the height adjustment frame of the utility model.

[0018] In the figure: 1. base, 2. n-shaped frame, 3. sleeve, 4. connecting rod, 5. U-shaped frame, 6. first tightening screw, 7. fixing sleeve, 8. adjusting rod, 9. second tightening screw, 10. anti-slip rubber block, 11. anti-slip rubber pad. DETAILED DESCRIPTION

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] like Figure 1-4 As shown, a cast-in-place box beam web reinforcement positioning device includes a base 1, two height adjustment frames are installed on the base 1, and a positioning structure is installed on the two height adjustment frames. The device is placed at a target position through the base 1, and the height of the positioning structure is adjusted through the two height adjustment frames.

[0021] The positioning structure comprises an n-shaped frame 2, on which a plurality of supporting components are movably mounted.

[0022] Each supporting assembly includes a sleeve 3, which is movably mounted on the n-shaped frame 2. A connecting rod 4 is installed on each of the two opposite side walls of the sleeve 3. A U-shaped frame 5 is installed on the other end of the two connecting rods 4. A first tightening screw 6 is installed on the lower wall of the sleeve 3, and the upper end of the first tightening screw 6 is tightened against the bottom of the cross bar of the n-shaped frame 2.

[0023] When in use, first tighten the first tightening screw 6 so that one end of the first tightening screw 6 is pressed against the n-shaped frame 2, so that the U-shaped frame 5 at the end is fixed. The operator moves the sleeve 3 on the n-shaped frame 2 laterally in turn according to the target steel bar spacing and cooperates with the measuring ruler to make the spacing between each support component reach the target steel bar spacing. The U-shaped frames 5 on both sides are used to place steel bars, which are suitable for positioning steel bars of cast-in-place box beam webs of different sizes.

[0024] Each height adjustment frame includes a fixed sleeve 7, which is installed on the base 1. An adjusting rod 8 is movably inserted on the fixed sleeve 7. A second tightening screw 9 is installed on the outer wall of the fixed sleeve 7. The end of the second tightening screw 9 is tightened on the outer wall of the adjusting rod 8.

[0025] By longitudinally moving the adjusting rod 8 in the fixed sleeve 7, the height adjustment of the positioning structure is achieved, that is, the height adjustment of the U-shaped frame 5 is achieved, and then by rotating the second tightening screw 9, one end of the second tightening screw 9 is pressed against the adjusting rod 8, so that the relative position between the adjusting rod 8 and the fixed sleeve 7 is fixed.

[0026] Preferably, an anti-skid rubber block 10 is installed on the upper end of the first fastening screw 6 to prevent the first fastening screw 6 and the n-shaped frame 2 from wearing each other.

[0027] In addition, the cross-sectional shape of the adjusting rod 8 is a rectangular structure; the two connecting rods 4 are L-shaped structures; and a U-shaped rubber pad 11 is provided on the inner wall of the U-shaped frame 5 to prevent the steel bar and the U-shaped frame 5 from wearing each other.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cast-in-place box beam web reinforcement positioning device, comprising a base (1), on which two height adjustment frames are mounted, characterized in that: A positioning structure is installed on the two height adjustment racks; The positioning structure comprises an n-shaped frame (2), and a plurality of supporting components are movably mounted on the n-shaped frame (2); Each of the supporting components comprises a sleeve (3), the sleeve (3) being movably sleeved on the n-shaped frame (2), a connecting rod (4) being respectively installed on two opposite side walls of the sleeve (3), the other ends of the two connecting rods (4) being respectively installed with a U-shaped frame (5), a first fastening screw (6) being installed on the lower wall surface of the sleeve (3), the upper end of the first fastening screw (6) being fastened to the bottom of the crossbar of the n-shaped frame (2).

2. The cast-in-place box beam web steel bar positioning device according to claim 1, characterized in that: Each of the height adjustment frames comprises a fixed sleeve (7), the fixed sleeve (7) being mounted on the base (1), an adjustment rod (8) being movably inserted on the fixed sleeve (7), a second tightening screw (9) being mounted on the outer wall surface of the fixed sleeve (7), and an end of the second tightening screw (9) being tightened against the outer wall surface of the adjustment rod (8).

3. The cast-in-place box beam web steel bar positioning device according to claim 1, characterized in that: An anti-slip rubber block (10) is mounted on the upper end of the first tightening screw (6).

4. The cast-in-place box beam web reinforcement positioning device according to claim 2, characterized in that: The cross-sectional shape of the adjusting rod (8) is a rectangular structure.

5. The cast-in-place box beam web steel bar positioning device according to claim 1, characterized in that: The two connecting rods (4) are L-shaped structures.

6. The cast-in-place box beam web steel bar positioning device according to claim 1, characterized in that: A U-shaped rubber pad (11) is provided on the inner wall surface of the U-shaped frame (5).

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