A cast-in-place device for construction of a steel box girder of a viaduct

Abstract

The application relates to the technical field of steel box girder construction, and discloses a high viaduct steel box girder construction cast-in-place device, which comprises a box body assembly; the box body assembly comprises a main box body provided with a cover plate at the top, a frame body fixedly connected to the inside of the main box body, a sealing assembly arranged between the main box body and the cover plate; the sealing assembly comprises a shell one fixedly connected to the bottom of the cover plate; the application has the advantages of convenient installation and high sealing performance; when the cover plate is installed, the cover plate first contacts the top of the sealing gasket and pushes the sealing gasket to deform, and finally the cover plate is fixed through the rebound force of the spring one; the sealing effect is improved through the mode of arranging the sealing gasket and extruding the sealing gasket during installation; the installation and dismounting mode is simple and fast, and the workers can conveniently use the device; the problems that the existing high viaduct steel box girder construction cast-in-place device does not have the functions of good sealing and convenient installation are solved.

Description

Technical Field

[0001] This invention relates to the field of steel box girder construction technology, specifically to a cast-in-place device for the construction of steel box girders for viaducts. Background Technology

[0002] The steel box girder structure consists of a series of components, including a top plate, bottom plate, web plate, longitudinal stiffeners, transverse stiffeners, and vertical stiffeners. These components are connected using welding. Due to the numerous welded areas and complex stress distribution of the steel box girder, coupled with the repeated loads from vehicle wheels and the many uncertainties in the welding process, as well as the potential for residual stress at the weld joints, the weld joints of the steel box girder often become the most prone to cracking and the areas where cracks develop most rapidly. Furthermore, high-volume, heavy-load traffic also exacerbates the occurrence and development of fatigue cracks in the steel box girder.

[0003] In the market, the sealing performance between the sealing plate and the outer box body of the on-site construction device for steel box girder of elevated bridges is not good during use, which easily leads to concrete slurry seeping out from the connection between the sealing plate and the outer box body. For example, Chinese patent CN217896266U discloses an on-site construction device for steel box girder of municipal elevated bridges. During its use, under the action of the elastic force of the support spring itself, the support spring drives the push rod to move through the slider, the push rod drives the push plate to move, and the push plate drives the sealing gasket to move, so that the sealing gasket is tightly attached to the outer box body. Moreover, the sealing gasket is made of rubber material, which has a good sealing effect. Therefore, during use, the sealing performance at the connection between the sealing plate and the outer box body can be improved, and concrete slurry will not seep out.

[0004] Existing cast-in-place construction devices for elevated bridge steel box girders do not have good sealing and easy installation functions. For example, the aforementioned patent can enhance the sealing effect of the device by setting springs and sealing gaskets. However, in actual use, only the sealing gasket directly below the push rod will press against the top of the outer box body, while the other sealing gaskets far away from the push rod can only be sealed by contact. The sealing effect is still poor, and the fixing method is cumbersome and inconvenient to use. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a cast-in-place device for the construction of steel box girders for viaducts, which has the advantages of convenient installation and high sealing performance, thus solving the problems that existing cast-in-place devices for the construction of steel box girders for viaducts lack good sealing and convenient installation functions.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cast-in-place construction device for steel box girders of viaducts, comprising a box assembly; the box assembly comprising: a main box body with a cover plate on its top; a frame fixedly connected to the interior of the main box body; a sealing assembly provided between the main box body and the cover plate; the sealing assembly comprising: a housing first, fixedly connected to the bottom of the cover plate; a groove first, symmetrically opened on one side of the housing first; a sliding groove, symmetrically opened on the side of the main box body; a round-headed rod first, slidably connected in each of the sliding grooves, with the opposing surfaces of two round-headed rods first respectively inserted into two grooves first; a spring first, sleeved on the outer side wall of each round-headed rod first; a groove second, opened inside the main box body; and a sealing gasket fixedly connected in the groove second.

[0009] Preferably, the sealing assembly further includes a housing three, disposed on the inner side wall of the main housing.

[0010] Preferably, the inner sidewall of the main housing is provided with a sliding assembly; the sliding assembly includes: a groove three, which is formed in the inner sidewall of the main housing; and a housing two, which is slidably connected to the groove three, and the groove two is formed in the inner sidewall of the sealing gasket, and the sealing gasket and the housing three are respectively fixedly connected to the housing two.

[0011] Preferably, the sliding component further includes a slider, which is symmetrically and fixedly connected to both sides of the housing.

[0012] Preferably, the main housing is provided with a disassembly assembly on its side; the disassembly assembly includes: holes symmetrically opened on the side of the main housing; two round-headed rods slidably connected to the two holes; and two springs sleeved on the outer side wall of each round-headed rod.

[0013] Preferably, the disassembly assembly further includes: a plate body, which is slidably connected to the outer side wall of each of the two round-headed rods, and the top of each plate body is slidably connected to the bottom of one of the two round-headed rods.

[0014] Preferably, the disassembly assembly further includes bolts, which are symmetrically and rotatably connected to the side of the main housing. Two bolts pass through the two plates respectively and are threadedly connected to the plates.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a cast-in-place device for the construction of steel box girders for viaducts, which has the following beneficial effects:

[0017] This invention has the advantages of convenient installation and high sealing performance. When installing the cover plate, the cover plate first contacts the top of the sealing gasket and pushes the sealing gasket to deform. Finally, the cover plate is fixed by the rebound force of the spring. The sealing effect is improved by setting the sealing gasket and squeezing the sealing gasket during installation. Moreover, the installation and disassembly methods are simple and quick, which is convenient for workers to use. It solves the problem that the existing on-site casting device for elevated bridge steel box girder construction does not have good sealing and convenient installation functions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention from the front.

[0020] Figure 3 This is a schematic diagram of a partial connection method of the sealing component in this invention.

[0021] In the picture:

[0022] 1. Container assembly; 11. Main container; 12. Cover plate; 13. Frame;

[0023] 2. Sealing assembly; 21. Housing 1; 22. Groove 1; 23. Slide groove; 24. Round head rod 1; 25. Spring 1; 26. Groove 2; 27. Sealing gasket; 28. Housing 3;

[0024] 3. Sliding assembly; 31. Groove three; 32. Housing two; 33. Slider;

[0025] 4. Disassemble the components; 41. Hole; 42. Round head rod 2; 43. Spring 2; 44. Plate; 45. Bolt. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] See Figure 1-3A cast-in-place construction device for steel box girder of viaduct includes a box assembly 1; the box assembly 1 includes: a main box 11, with a cover plate 12 on its top; a frame 13, fixedly connected to the inside of the main box 11; a sealing assembly 2 is provided between the main box 11 and the cover plate 12; the sealing assembly 2 includes: a housing 21, fixedly connected to the bottom of the cover plate 12; a groove 22, symmetrically opened on the side of the housing 21; a sliding groove 23, symmetrically opened on the side of the main box 11; a round-headed rod 24, slidably connected in each of the sliding grooves 23, with the two round-headed rods 24 respectively inserted into the two grooves 22; a spring 25, sleeved on the outer side wall of each round-headed rod 24; a second groove 26, opened in the main box 11; and a sealing gasket 27, fixedly connected in the second groove 26; the sealing assembly 2 further includes: a third housing 28, disposed on the inner side wall of the main box 11.

[0029] In use, after placing the cover plate 12 directly above the main housing 11, push the cover plate 12 downwards so that the bottom of the cover plate 12 housing 21 first contacts the top inclined surface of the sealing gasket 27, causing the sealing gasket 27 to deform. Continue to push the cover plate 12 downwards, causing the housing 21 to slide downwards while keeping the sealing gasket 27 tightly against the outside of the housing 21, achieving a good sealing effect. Continue until the cover plate 12 is embedded in the top of the main housing 11, at which point the bottom of the cover plate 12 first contacts the arc on the outer wall of the multiple round-headed rods 24, and pushes the multiple round-headed rods 24... 4. The cover plate 12 slides outward simultaneously within multiple sliding grooves 23, pulling the spring 25. After the bottom of the cover plate 12 is pressed against the main housing 11, the rebound force of the spring 25 causes the two round-headed rods 24 to slide towards each other within the two sliding grooves 23, so that the opposing ends of the two round-headed rods 24 are inserted into the two slots 22 respectively, which fixes the cover plate 12, prevents the concrete inside the main housing 11 from overflowing, and improves the sealing performance. In use, the housing 21 slides downward while embedding between the housing 28 and the sealing gasket 27, achieving a double sealing effect.

[0030] Example 2

[0031] See Figure 1-3 Based on Embodiment 1, a sliding function has been added;

[0032] The inner sidewall of the main housing 11 is provided with a sliding assembly 3; the sliding assembly 3 includes: a groove 31, which is opened in the inner sidewall of the main housing 11; a housing 22, which is slidably connected in the groove 31, and the groove 26 is opened in the inner sidewall of the sealing gasket 27, and the sealing gasket 27 and the housing 38 are respectively fixedly connected in the housing 22; the sliding assembly 3 also includes: a slider 33, which is symmetrically fixedly connected to the side of the housing 22.

[0033] When in use, before installing the cover plate 12, insert the housing 2 32 into the groove 3 31 to complete the installation of the sealing gasket 27 and the housing 3 28. Conversely, install the sealing gasket 27 and the housing 3 28 to improve the practicality of the device and facilitate the replacement or recycling of the sealing gasket 27 and the housing 3 28. When in use, insert the housing 2 32 into the groove 3 31 at the same time, so that the slider 33 is embedded in the main box 11 to improve stability.

[0034] Example 3

[0035] See Figure 1-3 Based on Embodiment 2, a disassembly function has been added;

[0036] The main housing 11 is provided with a disassembly assembly 4 on its side. The disassembly assembly 4 includes: holes 41 symmetrically opened on the side of the main housing 11; round-headed rods 42 slidably connected to the two holes 41; and springs 43 sleeved on the outer side wall of each round-headed rod 42. The disassembly assembly 4 also includes: plates 44 slidably connected to the outer side wall of each round-headed rod 42, and the top of each plate 44 is slidably connected to the bottom of a round-headed rod 24. The disassembly assembly 4 also includes: bolts 45 symmetrically rotatably connected to the side of the main housing 11, with two bolts 45 passing through the two plates 44 respectively and threadedly connected to the plates 44.

[0037] In use, the inner end of the round-headed rod 42 is inserted into the slider 33, which adjusts the height of the slider 33 and the housing 32, preventing longitudinal displacement of the housing 32 and improving practicality. During disassembly, pulling the round-headed rod 42 outwards causes it to slide outwards within the hole 41, simultaneously pulling the spring 43 until the inner end of the round-headed rod 42 slides out of the slider 33. Then, pulling the housing 32 upwards completes the disassembly of the housing 32. Conversely, pulling it downwards allows for installation of the housing 32. During use, the plate 4 is pulled outwards directly. 4. The plate 44 simultaneously drives the first round-headed rod 24 and the second round-headed rod 42 to slide outwards. As the first round-headed rod 24 slides out of the first groove 22, the second round-headed rod 42 also slides out of the slider 33. This allows for the simultaneous disassembly of the cover plate 12 and the second housing 32, improving the practicality of the device. In use, rotating the bolt 45 causes the plate 44 to slide outwards through the threaded connection with the bolt 45. This pulls the first round-headed rod 24 and the second round-headed rod 42 outwards, allowing for the simultaneous disassembly of the cover plate 12 and the second housing 32 while fixing the positions of the first round-headed rod 24 and the second round-headed rod 42, further improving practicality.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cast-in-place construction device for steel box girder of an elevated bridge, comprising a box assembly (1); the box assembly (1) comprising: The main body (11) has a cover plate (12) on its top. The frame (13) is fixedly connected to the inside of the main box (11); The feature is that a sealing assembly (2) is provided between the main housing (11) and the cover plate (12); the sealing assembly (2) includes: The housing (21) is fixedly connected to the bottom of the cover plate (12); The first groove (22) is symmetrically opened on the side of the first shell (21); Slides (23) are symmetrically opened on the side of the main housing (11); Round-headed rod 1 (24) is slidably connected in each of the grooves (23), and the two round-headed rods 1 (24) facing each other are respectively inserted into the two grooves 1 (22); Spring 1 (25) is sleeved on the outer side wall of each of the round-headed rods 1 (24); The second trough (26) is located inside the main box (11); A sealing gasket (27) is fixedly connected inside the second groove (26); the sealing assembly (2) further includes: a housing third (28) disposed on the inner side wall of the main housing (11); a sliding assembly (3) is disposed on the inner side wall of the main housing (11); the sliding assembly (3) includes: The third trough (31) is opened on the inner side wall of the main box (11); The second housing (32) is slidably connected to the third groove (31), and the second groove (26) is formed on the inner sidewall of the sealing gasket (27). The sealing gasket (27) and the third housing (28) are respectively fixedly connected to the second housing (32); the sliding assembly (3) further includes: A slider (33) is symmetrically fixed to the side of the housing (32); a disassembly assembly (4) is provided on the side of the main housing (11); the disassembly assembly (4) includes: Holes (41) are symmetrically opened on the side of the main box (11); Round-headed rod 2 (42) is slidably connected within the two holes (41); Spring 2 (43) is sleeved on the outer wall of each of the round-headed rods 2 (42); the disassembly assembly (4) further includes: The plate (44) is slidably connected to the outer wall of each of the two round-headed rods (42), and the top of each plate (44) is slidably connected to the bottom of one of the round-headed rods (24); in use, after placing the cover plate (12) directly above the main box (11), push the cover plate (12) downward, so that the housing one (21) at the bottom of the cover plate (12) first contacts the inclined surface of the top of the sealing gasket (27), and after the sealing gasket (27) is deformed, continue to push the cover plate (12) downward, so that the housing one (21) slides downward, and the sealing gasket (27) slides downward. 27) Always keep it close to the outside of the housing (21); until the cover plate (12) is embedded in the top of the main box (11), so that the bottom of the cover plate (12) first contacts the arc on the outer wall of the multiple round-head rods (24), and pushes the multiple round-head rods (24) to slide outward simultaneously in the multiple sliding grooves (23), and pulls the spring (25). Then, after the bottom of the cover plate (12) is close to the main box (11), the rebound force of the spring (25) causes the two round-head rods (24) to slide towards each other in the two sliding grooves (23), so that the two The two opposing ends of the round-headed rods (24) are respectively inserted into the two grooves (22) to fix the cover plate (12), prevent concrete from overflowing from the main box (11), and improve the sealing performance; when in use, the shell (21) slides downward and is embedded between the shell (28) and the sealing gasket (27) to achieve a double sealing effect; when in use, the shell (32) is inserted into the groove (31) and the slider (33) is embedded into the main box (11) to improve stability; when in use, the round-headed rods (42) are inserted into the groove (31) to improve the sealing performance. Insert the end into the slider (33) to prevent the housing two (32) from shifting in longitudinal height; and when disassembling, pull the round-headed rod two (42) outward, so that the round-headed rod two (42) slides outward in the hole (41) while pulling the spring two (43) until the inner end of the round-headed rod two (42) slides out of the slider (33), and then pull the housing two (32) directly upward, so that the housing two (32) slides out of the groove three (31) to complete the disassembly of the housing two (32), and conversely, to realize the installation of the housing two (32).

2. The on-site casting device for elevated bridge steel box girder construction according to claim 1, characterized in that: The disassembly assembly (4) also includes: Bolts (45) are symmetrically rotated and connected to the side of the main box (11). The two bolts (45) pass through the two plates (44) respectively and are threadedly connected to the plates (44).

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