Beam bottom carrying pole beam device for replacing bridge suspender

Abstract

The utility model relates to a beam bottom carrying pole beam device for replacing a bridge suspender, which comprises a beam base and a beam connecting seat, the beam base comprises two channel steels which are distributed oppositely, a plurality of supporting rods are arranged between the two channel steels, and the plurality of supporting rods are uniformly distributed on two sides of the beam base and are distributed along the center of the beam base in a one-to-one symmetry manner; a square steel pipe used for fixing and limiting the supporting feet is placed in the middle of the beam base, the beam connecting base comprises four connecting rods, the four connecting rods are installed at the four end corners of the two steel channels respectively, the beam base is hoisted below a bridge box beam plate through the four connecting rods, and the beam base is located below a suspender needing to be replaced. The carrying pole device which is recyclable, easy to disassemble and assemble and high in strength is adopted, the tedious process of building an overwater construction platform is avoided, the construction safety is improved, the influence on existing normal land and water traffic is reduced, and meanwhile a large amount of cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge hanger replacement devices, in particular to a beam bottom shoulder beam device used for bridge hanger replacement. Background Art

[0002] As the service life increases, the bridge hangers will inevitably reach their service life. The hangers are the main load-bearing components of the beam-arch composite bridge, and are also the main way to transfer the main beam's deadweight, auxiliary facilities load and live load to the arch ribs. When the bridge hangers reach their design service life, they need to be replaced. However, due to the limitations of the length of time for land traffic closures, the length of time for water traffic closures, the clear height for navigation, and the construction conditions at the bottom of the bridge beam, the replacement of the hangers requires a long-term fixed water construction platform at the bottom of the beam, which has a large impact. It is difficult to set up large tooling such as jacks required to replace the hangers, and it is usually necessary to complete the replacement of an entire hanger within 6 hours at night. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a beam bottom shoulder pole beam device for replacing bridge hangers, which can effectively solve the problems faced by hanger replacement construction, such as long land traffic closure time, long water traffic closure time, low navigation clearance, large impact area of ​​building a long-term fixed water construction platform at the bottom of the beam, and difficulty in setting up large tooling such as jacks required for replacing hangers and other harsh bridge beam bottom construction conditions.

[0004] The purpose of the utility model is achieved through the following technical scheme. The beam bottom shoulder beam device used for replacing bridge hangers includes a beam base and a beam connecting seat. The beam base includes two relatively distributed channel steels, and a plurality of support rods are installed between the two channel steels. The plurality of support rods are distributed on both sides of the beam base and are symmetrically distributed along the center of the beam base. A square steel pipe for fixing and limiting the support legs is placed in the middle position of the beam base. The beam connecting seat includes four connecting rods, which are respectively installed at the four end corners of the two channel steels, and the beam base is hoisted below the bridge box girder plate through the four connecting rods, and the beam base is located below the hanger to be replaced.

[0005] The beneficial effects of the utility model are as follows: compared with the prior art, by arranging a beam bottom shoulder pole beam device including a beam base and a beam connecting seat, and hoisting it under the box beam plate of the bridge, the problems of low clear height for navigation, large impact area of ​​a long-term fixed water construction platform built at the bottom of the beam, and difficulty in fixing large tooling are overcome. A recyclable, easy-to-disassemble and high-strength shoulder pole beam device is adopted to avoid the cumbersome process of building a water construction platform, improve construction safety, reduce the impact on existing normal water and land transportation, and save a lot of costs at the same time.

[0006] Preferably, a plurality of mounting holes are provided on the waist plate of the channel steel, and a first stiffening steel plate equal in number to the support rod is fixed on the open side of the channel steel, the first stiffening steel plate is provided with mounting holes, the two ends of the support rod are respectively inserted into the mounting holes on the first stiffening steel plate and the mounting holes on the waist plate, and the support rod is a precision-rolled threaded steel bar, and the support rods on the first stiffening steel plate side and the waist plate side are fixed by nuts; by fixing the first stiffening steel plate on the channel steel, the end of the support rod can be fixed to the waist plate of the channel steel and the first stiffening steel plate by nuts, and it is convenient to adjust the distance between the two channel steels.

[0007] Preferably, the openings of the two channel steels are relatively distributed, and the first stiffening steel plate is fixed to the outer end surface of the opening side of the channel steel by welding; the above-mentioned structure is arranged, not only the installation between the support rod and the channel steel is convenient, but also the force on the channel steel is more stable, especially when the channel steel is subjected to the downward force of the square steel pipe placed in the middle position, the force points of the channel steel are all on the waist plate, which can avoid the de-welding phenomenon between the first stiffening steel plate and the channel steel.

[0008] Preferably, mounting holes are provided on the legs at both end corners of the channel steel, and second stiffening steel plates are installed on the legs located on the upper and lower sides of the channel steel, mounting holes are provided on the second stiffening steel plates, the lower ends of the connecting rods are inserted through the mounting holes on the second stiffening steel plates and the mounting holes on the legs, and the connecting rods are finely rolled threaded steel plates, and the connecting rods on the second stiffening steel plate sides are fixed by nuts; through the arrangement of the above-mentioned structure, by adding the second stiffening steel plate, the strength of the connecting rods connected to the channel steel legs is greatly increased, and the spacing and flatness between the beam base and the bridge box beam plate are conveniently adjusted by nuts.

[0009] Preferably, the upper end of the connecting rod passes through the air vent provided on the bridge box girder plate and is installed with a nut, the nut is located above the bridge box girder plate, and the nut is against the upper end surface of the bridge box girder plate; this makes it easy to hoist the beam base below the bridge box girder plate through the connecting rod, making construction more convenient.

[0010] Preferably, a plurality of third stiffening steel plates distributed at equal intervals are fixed inside the opening side of the channel steel, and the third stiffening steel plates are arranged in sequence along the length direction of the channel steel; through the above arrangement, the strength of the channel steel is greatly enhanced, so that the stability of the beam base is better during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the beam bottom shoulder-pole beam device of the utility model.

[0012] Figure 2 yes Figure 1 A is an enlarged structural diagram of FIG.

[0013] Figure 3 It is a schematic diagram of the actual application structure of the beam bottom shoulder pole beam device of the utility model.

[0014] Explanation of the accompanying drawings: 1. Beam base; 2. Beam connecting seat; 3. Square steel pipe; 4. Bridge box girder plate; 5. Nut; 11. Channel steel; 12. Support rod; 13. First stiffening steel plate; 14. Second stiffening steel plate; 15. Third stiffening steel plate; 21. Connecting rod; 11-1. Waist plate; 11-2. Support leg. DETAILED DESCRIPTION

[0015] The following is a detailed introduction to the utility model in conjunction with the accompanying drawings: Figures 1 to 3 As shown, the utility model includes a beam base 1 and a beam connection seat 2. The beam base 1 includes two relatively distributed channel steels 11, and a plurality of support rods 12 are installed between the two channel steels 11. The plurality of support rods 12 are distributed on both sides of the beam base 1 and are symmetrically distributed along the center of the beam base 1. A square steel pipe 3 for fixing and limiting the support legs is placed in the middle position of the beam base 1. The beam connection seat 2 includes four connecting rods 21, which are respectively installed at the four end corners of the two channel steels 11, and the beam base 1 is hoisted below the bridge box girder plate 4 through the four connecting rods 21, and the beam base 1 is located below the suspension rod to be replaced. The channel steel model is generally 12#, the strength grade is generally Q235, and the length is generally 7.5m.

[0016] A plurality of mounting holes are provided on the waist plate 11-1 of the channel steel 11. The first stiffening steel plate 13 equal in number to the support rods 12 is fixed on the open side of the channel steel 11. The first stiffening steel plate 13 is provided with mounting holes. The two ends of the support rods 12 are respectively inserted into the mounting holes on the first stiffening steel plate 13 and the mounting holes on the waist plate 11-1. The support rods 12 are finely rolled threaded steel. The support rods 12 on the first stiffening steel plate 13 side and the waist plate 11-1 side are fixed by nuts 5. The openings of the two channel steels 11 are relatively distributed, and the first stiffening steel plate 13 is fixed to the outer end surface of the opening side of the channel steel 11 by welding. The finely rolled threaded steel is generally φ32, and the strength grade is generally PSB500.

[0017] The legs 11-2 at both ends of the channel steel 11 are provided with mounting holes, and the legs 11-2 located on the upper and lower sides of the channel steel 11 are provided with second stiffening steel plates 14, and the second stiffening steel plates 14 are provided with mounting holes. The lower end of the connecting rod 21 is inserted through the mounting holes on the second stiffening steel plates 14 and the mounting holes on the legs 11-2, and the connecting rod 21 is a finely rolled threaded steel bar. The connecting rod 21 on the side of the second stiffening steel plates 14 is fixed by nuts 5. The upper end of the connecting rod 21 passes through the air vent provided on the bridge box girder plate 4 and is provided with nuts 5, which are located above the bridge box girder plate 4 and abut against the upper end surface of the bridge box girder plate 4. The length of the connecting rod 21 is the thickness of the bridge box girder plate 4 plus 50cm. The nuts mentioned above are all flat nuts, and the outer diameter of the nuts 5 abutting against the upper end surface of the bridge box girder plate 4 is greater than the diameter of the air vent.

[0018] A plurality of third stiffening steel plates 15 distributed at equal intervals are fixed in the open side of the channel steel 11 , and the third stiffening steel plates 15 are arranged in sequence along the length direction of the channel steel 11 .

[0019] The installation process of the utility model is as follows: first, the four connecting rods 21 are passed through the air holes provided on the bridge box girder plate 4, then the installer enters the bridge box, and the four connecting rods 21 are limited and hoisted on the bridge box girder plate 4 by screwing the nuts 5, and finally, the pre-installed beam base 1 is fixed on the four connecting rods 21 by the nuts 5, and the flatness is adjusted.

[0020] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A beam bottom shoulder beam device for replacing a bridge hanger, comprising a beam base (1) and a beam connecting seat (2), characterized in that: The beam base (1) comprises two channel steels (11) which are arranged opposite to each other, a plurality of support rods (12) are installed between the two channel steels (11), the plurality of support rods (12) are distributed on both sides of the beam base (1) and are symmetrically distributed along the center of the beam base (1), a square steel pipe (3) for fixing and limiting the support legs is placed in the middle position of the beam base (1), the beam connecting seat (2) comprises four connecting rods (21), the four connecting rods (21) are respectively installed at the four end corners of the two channel steels (11), and the beam base (1) is hoisted below the bridge box girder plate (4) through the four connecting rods (21), and the beam base (1) is located below the hoisting rod to be replaced.

2. The beam bottom shoulder beam device for replacing bridge hangers according to claim 1, characterized in that: A plurality of mounting holes are provided on the waist plate (11-1) of the channel steel (11), and a number of first stiffening steel plates (13) equal to the number of the support rods (12) are fixed on the open side of the channel steel (11), and mounting holes are provided on the first stiffening steel plates (13). The two ends of the support rods (12) are respectively inserted into the mounting holes on the first stiffening steel plates (13) and the mounting holes on the waist plate (11-1), and the support rods (12) are finely rolled threaded steel bars, and the support rods (12) on the first stiffening steel plates (13) side and the waist plate (11-1) side are both fixed by nuts (5).

3. The beam bottom shoulder beam device for replacing bridge hangers according to claim 2, characterized in that: The openings of the two channel steels (11) are relatively distributed, and the first stiffening steel plate (13) is fixed to the outer end surface of the opening side of the channel steel (11) by welding.

4. The beam bottom shoulder beam device for replacing bridge hangers according to claim 1, characterized in that: The legs (11-2) at both end corners of the channel steel (11) are provided with mounting holes, and the legs (11-2) located on the upper and lower sides of the channel steel (11) are provided with second stiffening steel plates (14), the second stiffening steel plates (14) are provided with mounting holes, the lower end of the connecting rod (21) is inserted through the mounting holes on the second stiffening steel plates (14) and the mounting holes on the legs (11-2), and the connecting rod (21) is a precision-rolled threaded steel, and the connecting rod (21) on the side of the second stiffening steel plates (14) is fixed by nuts (5).

5. The beam bottom shoulder beam device for replacing bridge hangers according to claim 4, characterized in that: The upper end of the connecting rod (21) passes through the air vent provided on the bridge box girder plate (4) and is installed with a nut (5), the nut (5) is located above the bridge box girder plate (4), and the nut (5) abuts against the upper end surface of the bridge box girder plate (4).

6. The beam bottom shoulder beam device for replacing bridge hangers according to claim 1, characterized in that: A plurality of third stiffening steel plates (15) distributed at equal intervals are fixed inside the opening side of the channel steel (11), and the third stiffening steel plates (15) are arranged in sequence along the length direction of the channel steel (11).

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