Box girder mounting bracket and its installation and use method

Abstract

The present invention relates to a box girder mounting bracket and its installation and use method. The mounting bracket includes a pair of movable yard plates symmetrically arranged above the open surface of the butt end of the box girder. The vertical plates of the two movable yard plates are connected to each other by connecting screw rods and bolts. One end of each movable yard plate is provided with an inner thread sleeve with an adjusting bolt. The bottom plate of each movable yard plate is parallel to the top surface of the box girder, and each bottom plate is vertically threaded to be connected to a leveling screw rod that is against the top edges of the two sides of the box girder opening. The bottom of the bottom plate of each movable yard plate is vertically connected to a force-bearing screw rod, and the bottom of the force-bearing screw rods on both sides of the movable yard plate is fixedly connected to a cross arm bracket, and the cross arm bracket, the force-bearing screw rods on both sides and the movable yard plate form a clamp to fix the box girder. The box girder is hoisted to the inner thread sleeve and erected on the top surface of the corbel box girder, and the above-mentioned adjusting bolts are adjusted to make the box girder and the corbel box girder flush and butt, and finally the butt joint is welded to complete the installation of the box girder. The installation is relatively convenient and efficient, and the mounting bracket can be disassembled and reused.

Description

Technical Field

[0001] The invention relates to the field of building component connection, and is a box beam mounting bracket and an installation and use method thereof. Background Art

[0002] At present, there are generally two ways to install steel frame structure beams. One is to weld the code plate to the upper flange plate of the steel beam to be installed, overlap the code plate welded to the steel beam on the steel structure corbel (another name for the bracket beam, also known as the beam support) to be docked, and then complete the docking connection operation through external workers; the other way is that the steel beam to be installed is suspended at the installation position by hoisting equipment, and then the workers perform the docking connection operation. The first method mentioned above requires welding code plates, and after the steel beam is docked and installed, in order to ensure the subsequent normal construction and aesthetics, the code plate needs to be cut off, and polishing and repainting operations are required, which is relatively cumbersome, labor-intensive, and inefficient. The second method uses a suspended connection. Although it is more efficient than the first method, it requires multiple operators to follow the hoisting and temporarily fix the steel beam at any time. The labor intensity is also high, and the crane equipment takes a long time, affecting the construction progress. In order to solve the above problems, the prior art publicly adopts a detachable mounting bracket to achieve the docking of the steel beam and the steel structure bracket, but this type of mounting bracket is generally only applicable to the docking of I-shaped steel beams, and the flange plates protruding on both sides of the I-shaped steel beam are mainly used during docking, so as to facilitate the fixing and limiting operations of the mounting bracket. As for the box beam, because the box beam itself is large in size and all four sides are flat, and in order to facilitate the internal welding operation after the box beam is docked, the top surface of the box beam is often provided with an opening for convenient operation, which obviously makes the existing general mounting bracket difficult to be applied to the docking of the box beam.

[0003] The existing box beam and the corbel box beam are butt-jointed and installed mainly by temporarily fixing the box beam web and the corbel box beam web through the connecting plate and bolts, and then welding the butt joints. After welding, the cover plate is welded to the above-mentioned open parts to complete the installation of the entire box beam. Although this method is simple and convenient, it has the following shortcomings: First, after the box beam is in place, the installation of the connecting plate is cumbersome, time-consuming and labor-intensive, and takes up a long time for the hoisting equipment. If there is an installation or production error, it takes longer and is less efficient; second, after the connection of the connecting plate and the temporary fixing bolts is completed, it will remain on the box beam permanently, which is a waste of materials; third, if the box beam is misaligned, it is difficult to correct, which can easily cause quality defects and safety hazards.

[0004] For this reason, a mounting bracket suitable for box girder butt mounting needs to be designed. Summary of the invention

[0005] In order to overcome the above shortcomings, the purpose of the present invention is to provide a box girder mounting bracket and its installation and use method to the art, so as to solve the technical problems that the existing mounting bracket is difficult to be applied to the box girder butt mounting, and the existing box girder butt mounting is cumbersome, time-consuming, labor-intensive, costly and inefficient. The purpose is achieved through the following technical solution.

[0006] A box girder mounting bracket, which is used as a bracket for docking a box girder and a corbel box girder, wherein the top surface of the box girder is provided with an opening with a missing cover plate near the docking end, and a height difference of the thickness of a cover plate is formed between the top edges of both sides of the opening and the top surface of the box girder; the structural key points are that the mounting bracket includes a pair of movable yard plates symmetrically arranged above the open surface of the box girder, the movable yard plates include a vertical plate and a bottom plate connected at right angles, the vertical plates of the two movable yard plates are connected by at least two connecting screw rods perpendicular to the vertical plates and bolts, each movable yard plate is provided with an inner thread sleeve at one end facing the corbel box girder, each inner thread sleeve is threadedly connected to an adjusting bolt for resisting the top surface of the corbel box girder; the bottom plates of each movable yard plate are parallel The top surface of the box beam, and each bottom plate is vertically threadedly connected to at least one leveling screw rod used to abut against the top edges of the two sides of the box beam opening; at least two spaced force screws are vertically connected to the bottom of the bottom plate of each movable code plate, and the top of each force screw is fixed to the corresponding bottom plate by a nut; the force screw under the movable code plate on one side corresponds to the force screw under the movable code plate on the other side, and the bottoms of the two corresponding force screws are fixedly connected to a cross arm bracket, and the cross arm bracket is provided with a connecting hole for passing the force screw on one side, and a strip sliding hole for passing the force screw on the other side and slidingly cooperating with the force screw on the side, and the box beam is fixed by the cross arm bracket, the force screws on both sides and the movable code plate to form a clamp.

[0007] The above structure can adjust the spacing between the movable code plates on both sides by connecting the screw rods, and adjust the spacing between the lower cross arm bracket and the upper movable code plate by the force screw rods. One end of the cross arm bracket is provided with a strip sliding hole, so that the force screw rods on both sides can be adapted to adjust the spacing with the movable code plates on both sides. The connecting screw rods and the force screw rods are fixed by nuts, so that the installation bracket and the box beam are fixed by a clamp. The structure is relatively reliable and stable. After the clamp is fixed, the inner thread sleeve at one end of the movable code plate is used to cooperate with the adjusting screw to abut against the top surface of the corbel box beam. By adjusting the adjusting screw, the box beam can be adjusted to be flush with the corbel box beam, thereby ensuring the accuracy and quality of the box beam docking installation. In addition, the installation bracket can be easily dismantled and reused for a second time, achieving the purpose of environmental protection, economy and material saving.

[0008] The cross arm bracket is a channel steel and has a better strength.

[0009] The vertical plate and the bottom plate of the movable yard plate are welded with stiffening ribs at the angle between them. Through this structure, the strength of the movable yard plate is improved, and the reliable and stable use is guaranteed.

[0010] The end corner of one side of the vertical plate of the movable code plate connected to the inner thread sleeve is arranged as an oblique opening. Through this structure, the screwing operation of the adjusting bolt in the inner thread sleeve is convenient.

[0011] The leveling screw is threadedly connected to the bottom plate and then connected to the locking nut, and the ends of the leveling screw that abut against the top edges of the two sides of the box beam opening are flat ends. Through this structure, the movable yard plate is kept horizontal, and the movable yard plate and the bottom cross beam are clamped with the box beam through the force-bearing screw rod, which is more reliable and stable to use and not easy to loosen.

[0012] The force-bearing screw rod has a bolt head at one end and a nut at the other end after passing through the bottom plate of the movable code plate. This structure is convenient for connection.

[0013] The installation and use method of the box beam mounting bracket includes the following steps:

[0014] Step 1: Connect the movable yard plates on both sides by connecting the screw rods with nuts. The bottom plate of the movable yard plate is threadedly connected to the leveling screw rod. The top of the force-bearing screw rod is fixedly connected to the bottom of the bottom plate by nuts. The bottom end of the force-bearing screw rod is connected to the cross arm bracket by nuts.

[0015] Step 2: insert the above structure into the box beam as a whole, and adjust the leveling screw and the nut connecting the screw so that the bottom plate surfaces of one end of the two movable code plates are flush with the top surface of the box beam, the force-bearing screws on both sides are close to the two sides of the box beam, and the cross arm bracket is located on the bottom surface of the box beam;

[0016] Step 3: By adjusting the nuts on the force-bearing screw rods, the cross arm bracket and the two upper movable yard plates are clamped to the top and bottom surfaces of the box beam. At this time, the cross arm bracket cooperates with the force-bearing screw rods and movable yard plates on both sides to form a clamp to fix the box beam;

[0017] Step 4: After completing the above operations, hoist the box girder to dock with the corbel box girder. When docking, place the inner thread sleeve of the movable code plate on the top surface of the corbel box girder, and adjust the adjusting bolt of the inner thread sleeve to make the box girder and the corbel box girder form a flush docking state;

[0018] Step 5: Through the opening of the box beam, the box beam and the inner joint of the corbel box beam are welded and fixed. After welding and fixing, the cross arm bracket is removed, and the installation bracket can be removed;

[0019] Step six: weld the missing cover plates at the open ends of the box girder, and the installation of the box girder is completed.

[0020] The overall structure of the present invention is relatively simple, the production cost is low, the box beam can be reliably installed in position, the installation is relatively convenient, the labor intensity is low, the construction efficiency is high, and it is easy to disassemble and can be reused after disassembly. It is relatively economical and environmentally friendly, and is suitable for use as a temporary bracket for the installation of various box beams, and an improvement on similar bracket installation structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side structural schematic diagram of the present invention.

[0022] Figure 2 yes Figure 1 Schematic diagram of the left view structure.

[0023] Figure 3 yes Figure 1 Schematic diagram of the top view structure.

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the implementation state of the present invention.

[0025] Figure 5 yes Figure 4 Schematic diagram of the side structure, in which AA section is made.

[0026] Figure 6 yes Figure 5 Schematic diagram of the top view structure.

[0027] Figure 7 yes Figure 5 AA cross-sectional structure schematic diagram.

[0028] Figure 8 It is a schematic diagram of the structure after the present invention is installed.

[0029] The serial numbers and names in the figure are: 1. movable code plate, 101. vertical plate, 102. bottom plate, 103. stiffening rib, 104. internal thread sleeve, 2. connecting screw, 3. leveling screw, 4. adjusting bolt, 5. force screw, 6. cross arm bracket, 601. strip sliding hole, 7. box beam, 701. open, 8. corbel box beam, 9. cover plate. DETAILED DESCRIPTION

[0030] The present invention will now be further described with reference to the accompanying drawings.

[0031] like Figure 1-8As shown, the box beam mounting bracket is a bracket for docking the box beam 7 and the corbel box beam 8, wherein the top surface of the box beam is provided with an opening 701 with a missing cover plate 9 near the docking end, and a height difference of the thickness of the cover plate is formed between the top edges of both sides of the opening and the top surface of the box beam. The mounting bracket includes a pair of movable yard plates 1 symmetrically arranged above the open surface of the box beam, and the movable yard plates include a vertical plate 101 and a bottom plate 102 that are connected at right angles. A row of stiffening ribs 103 are welded at right angles between the vertical plate and the bottom plate to improve the overall strength of the movable yard plates. The vertical plates of the two movable yard plates are connected by two connecting screw rods 2 that are spaced and perpendicular to the vertical plates and are connected by bolts. An inner thread sleeve 104 is welded on one end of each movable yard plate facing the corbel box beam, and each inner thread sleeve is threadedly connected to an adjustment bolt 4 that is used to resist the top surface of the corbel box beam. The bottom plate of each movable yard plate is parallel to the top surface of the box beam, and each bottom plate is vertically threaded with a leveling screw 3 for abutting against the top edges of the two sides of the box beam opening. Two spaced force screws 5 are vertically connected to the bottom of each movable yard plate, and the force screws are provided with bolt heads for limiting at the bottom ends. The force screws under one movable yard plate correspond to the force screws under the other movable yard plate one by one, and the bottoms of the two corresponding force screws are connected through a cross arm bracket 6. The cross arm bracket is a groove steel, and the cross arm bracket is provided with a connecting hole for passing through the force screw on one side, and a strip sliding hole 601 for passing through the force screw on the other side and slidingly cooperating with the force screw on the side. The bolt head at the bottom end of the force screw is limited in the groove-shaped mouth on the bottom side of the connecting hole and the strip sliding hole, and the top of each force screw passes through the bottom plate of the movable yard plate and then is connected with a nut to be fixed. The box beam is fixed by a clamp formed by the cross arm bracket, the force-bearing screw rods on both sides and the movable yard plate.

[0032] In order to facilitate the operation of selecting and tightening the adjusting bolt 4 in the inner thread sleeve 104, the end corner of one side of the vertical plate 101 of the movable code plate 1 connected to the inner thread sleeve is set as an oblique opening.

[0033] In order to make the connection and locking between the leveling screw 3 and the bottom plate 101 of the movable code plate 1 more reliable, the leveling screw is threadedly connected to the bottom plate and then connected to the locking nut. The ends of the leveling screw that abut against the top edges on both sides of the opening 701 of the box beam 7 are flat ends or welded with a flat plate.

[0034] The installation and use method of the box beam mounting bracket of the present invention mainly includes the following steps:

[0035] Step 1: Connect the movable code plates 1 on both sides by connecting the screw rod 2 with the nut. The bottom plate 101 of the movable code plate is threadedly connected to the leveling screw rod 3. The top of the force-bearing screw rod 5 is connected to the bottom of the bottom plates on both sides by nuts. The cross arm bracket 6 is connected between the bottom ends of the force-bearing screw rods on both sides.

[0036] Step 2, insert the above structure as a whole into the box beam 7, and adjust the leveling screw 3 and the nut connecting the screw 2, so that the bottom plate surfaces of one end of the two movable code plates 1 are flush with the top surface of the box beam, the force-bearing screws 5 on both sides are close to the two sides of the box beam, and the cross arm bracket 6 is located on the bottom surface of the box beam.

[0037] Step three, by adjusting the nut on the force-bearing screw 5, the cross arm bracket 6 and the two upper movable code plates 1 clamp the top and bottom surfaces of the box beam 7. At this time, the cross arm bracket cooperates with the force-bearing screws and movable code plates 1 on both sides to form a clamp to fix the box beam.

[0038] Step 4. After completing the above operation steps, use a crane to lift the box girder 7 to dock with the corbel box girder 8. When docking, place the inner thread sleeve 104 of the movable code plate 1 on the top surface of the corbel box girder, and adjust the adjusting bolt 5 of the inner thread sleeve to make the box girder and the corbel box girder form a flush docking state.

[0039] Step 5, through the opening 701 of the box beam 7, the box beam and the inner joint of the corbel box beam 8 are welded and fixed. After welding and fixing, the cross arm bracket is removed, and the installation bracket can be removed for secondary use.

[0040] Step six, welding the missing cover plate 9 at the opening 701 of the box beam 7, and the installation of the box beam is completed.

[0041] The above contents are intended to illustrate the technical means of the present invention, but not to limit the technical scope of the present invention. Those skilled in the art may make obvious improvements or substitutions to the present invention in combination with existing common knowledge, which also fall within the protection scope of the claims of the present invention.

Claims

1. A box girder mounting bracket, the mounting bracket being used as a bracket for butting a box girder (7) and a corbel box girder (8), wherein the top surface of the box girder is provided with an opening (701) with a missing cover plate (9) near the butt end, and a height difference of a thickness of a cover plate is formed between the top edges of both sides of the opening and the top surface of the box girder; characterized in that The mounting bracket comprises a pair of movable yard plates (1) symmetrically arranged above the open surface (701) of the box beam (7), the movable yard plates comprising a vertical plate (101) and a bottom plate (102) connected at right angles to each other, the vertical plates of the two movable yard plates being connected to each other by at least two connecting screw rods (2) perpendicular to the vertical plates and being matched with bolts for pulling, each movable yard plate having an inner thread sleeve (104) at one end facing the corbel box beam (8), each inner thread sleeve being threadedly connected to an adjusting bolt (4) for abutting against the top surface of the corbel box beam; the bottom plates of each movable yard plate are parallel to the top surface of the box beam, and each bottom plate is vertically threadedly connected to at least one adjusting bolt for abutting against the open surface (701) of the box beam 1) leveling screws (3) with top edges on both sides abutting against each other; at least two spaced force screws (5) are vertically connected to the bottom of each movable yard plate, and the top of each force screw is fixed to the corresponding bottom plate by a nut; the force screw under the movable yard plate on one side corresponds to the force screw under the movable yard plate on the other side, and the bottoms of the two corresponding force screws are fixedly connected to a cross arm bracket (6), and the cross arm bracket is provided with a connecting hole for passing through the force screw on one side, and a strip sliding hole (601) for passing through the force screw on the other side and slidingly cooperating with the force screw on the other side, and the box beam is fixed by the cross arm bracket, the force screws on both sides and the movable yard plate to form a clamp.

2. The box beam mounting bracket according to claim 1, characterized in that The cross arm bracket (6) is channel steel.

3. The box beam mounting bracket according to claim 1, characterized in that A stiffening rib (103) is welded at an angle between the vertical plate (101) and the bottom plate (102) of the movable yard plate (1).

4. The box beam mounting bracket according to claim 1, characterized in that An end corner of one side of the vertical plate (101) of the movable code plate (1) connected to the inner thread sleeve (104) is arranged to be beveled.

5. The box beam mounting bracket according to claim 1, characterized in that The leveling screw rod (3) is threadedly connected to the bottom plate (102) and then connected to a locking nut, and the ends of the leveling screw rod that abut against the top edges of both sides of the box beam opening are flat ends.

6. The box beam mounting bracket according to claim 1, characterized in that The force-bearing screw rod (5) has a bolt head at one end and the other end is connected to a nut after passing through the bottom plate (102) of the movable code plate (1).

7. A method for installing and using the box beam mounting bracket according to claim 1, characterized in that The installation method includes the following steps: Step 1: The movable yard plates (1) on both sides are connected by connecting the screw rods (2) with nuts, the bottom plate (102) of the movable yard plate is threadedly connected to the leveling screw rod (3), the bottom of the bottom plate is fixedly connected to the top of the force-bearing screw rod (5) by nuts, and the bottom end of the force-bearing screw rod is connected to the cross arm bracket (6) by nuts; Step 2: insert the entire structure into the box beam (7), and adjust the leveling screw and the nut connecting the screw so that the bottom plates at one end of the two movable yard plates are flush with the top surface of the box beam, the force-bearing screws on both sides are closely attached to the two sides of the box beam, and the cross arm bracket is located on the bottom surface of the box beam; Step 3: By adjusting the nuts on the force-bearing screw rods, the cross arm bracket and the two upper movable yard plates are clamped to the top and bottom surfaces of the box beam. At this time, the cross arm bracket cooperates with the force-bearing screw rods and movable yard plates on both sides to form a clamp to fix the box beam; Step 4, after completing the above steps, the box beam is hoisted to dock with the corbel box beam (8). When docking, the inner thread sleeve (104) of the movable yard plate is placed on the top surface of the corbel box beam, and the adjusting bolt (4) of the inner thread sleeve is adjusted to make the box beam and the corbel box beam form a flush docking state; Step 5, through the opening (701) of the box beam, the box beam and the inner joint of the corbel box beam are welded and fixed. After welding and fixing, the cross arm bracket is removed, and the installation bracket can be removed; Step 6: Weld the missing cover plate (9) to the open part of the box beam, and the installation of the box beam is completed.

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