Adjustable steel arch frame for deck type box arch bridge construction

Abstract

The utility model discloses an adjustable steel arch frame for deck type box arch bridge construction in the field of steel arch frames, which comprises a steel arch frame main body, an indwelling groove is arranged in the middle of the lower side of the steel arch frame main body, and matched adjusting steel arch frames are arranged at two ends of the steel arch frame main body in the indwelling groove in a sliding mode. First bolts are inserted into the middles of the two ends of the steel arch frame body in a threaded mode, matched threaded holes corresponding to the first bolts are formed in the middles of the two ends of the steel arch frame body, and a plurality of matched limiting holes are formed in the middle of the adjusting steel arch frame corresponding to the ends, away from bolt heads, of the first bolts at intervals. The ends, away from the steel arch frame body, of the adjusting steel arch frames are rotationally provided with the mounting plates, in the using process, the arc length of the steel arch frame can be adjusted conveniently, the steel arch frame can meet the requirement for the arc length of different deck type box arch bridge construction, the application range of the steel arch frame can be guaranteed conveniently, and the practicability of the steel arch frame is improved. And the use of the steel arch is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of steel arch frames, in particular to an adjustable steel arch frame for the construction of a deck-type box arch bridge. Background Technique

[0002] The deck-type box arch bridge is a structural form of an arch bridge. The construction of a deck-type box arch bridge refers to a series of engineering operation processes for building a deck-type box arch bridge. When constructing a deck-type box arch bridge, a steel arch frame is required to assist in the construction of the deck-type box arch bridge.

[0003] The steel arch frame is a commonly used temporary support structure in the construction of projects such as tunnels and bridges. During the construction process of a deck-type box arch bridge, the steel arch frame is used to provide support and shaping during the construction of the arch ring to ensure the structural stability and construction safety during the construction process.

[0004] However, when the existing steel arch frame is in use, it is not convenient to adjust the arc length of the steel arch frame, which is not conducive to meeting the requirements of different arc lengths for the construction of deck-type box arch bridges, will affect the applicable range of the steel arch frame, and is not conducive to the use of the steel arch frame.

[0005] Therefore, we propose an adjustable steel arch frame for the construction of a deck-type box arch bridge. Content of the Utility Model

[0006] The purpose of the utility model is to provide an adjustable steel arch frame for the construction of a deck-type box arch bridge to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An adjustable steel arch frame for the construction of a deck-type box arch bridge includes a steel arch frame main body. A retaining groove is formed in the middle of the lower side of the steel arch frame main body. At both ends of the steel arch frame main body located in the retaining groove, matching adjusting steel arch frames are slidably installed. At the middle of both ends of the steel arch frame main body, first bolts are threadedly inserted. At the middle of both ends of the steel arch frame main body, threaded holes matching the first bolts are formed correspondingly. At the middle of the adjusting steel arch frames, a number of matching limiting holes are formed at intervals corresponding to the ends of the first bolts far from the bolt heads. At the ends of the adjusting steel arch frames far from the steel arch frame main body, mounting plates are rotatably installed.

[0009] As a further scheme of the utility model: The upper sides of the threaded holes penetrate through the corresponding upper sides of the positions on the steel arch frame main body, and the lower sides of the threaded holes penetrate through the corresponding positions on the top of the retaining groove inside the steel arch frame main body.

[0010] By adopting the above technical solutions: The arrangement of the threaded holes on the steel arch frame main body helps to limit the first bolts.

[0011] As a further solution of the utility model: The upper sides of the adjustable steel arch frames are all in a state of being matched and attached to the top in the retaining grooves on the main body of the steel arch frame, and the two side surfaces of the adjustable steel arch frames are all in a state of being matched and attached to the corresponding positions in the retaining grooves on the main body of the steel arch frame.

[0012] By adopting the above technical solution: The setting of the retaining grooves on the main body of the steel arch frame helps to limit the adjustable steel arch frame.

[0013] As a further solution of the utility model: Limit blocks are fixedly arranged in the middle of the inner surfaces on both sides in the retaining grooves on the main body of the steel arch frame, and limiting grooves are correspondingly formed in the middle of the two side surfaces of the adjustable steel arch frame to be matched with the limit blocks.

[0014] By adopting the above technical solution: The main body of the steel arch frame can fix and limit the limit blocks.

[0015] As a further solution of the utility model: The limit blocks are all located in the corresponding limiting grooves on the corresponding adjustable steel arch frames, and the limit blocks are all slidably connected with the corresponding limiting grooves on the corresponding adjustable steel arch frames.

[0016] By adopting the above technical solution: The setting of the limit blocks and the limiting grooves helps to limit between the main body of the steel arch frame and the adjustable steel arch frame.

[0017] As a further solution of the utility model: The ends of the first bolts away from the bolt heads are all inserted into the corresponding limiting holes on the corresponding adjustable steel arch frames, and the limiting holes all penetrate the upper side and the lower side of the corresponding positions on the corresponding adjustable steel arch frames.

[0018] By adopting the above technical solution: The setting of the first bolts and the limiting holes can position between the main body of the steel arch frame and the adjustable steel arch frame.

[0019] As a further solution of the utility model: Connecting blocks are fixedly arranged on the surfaces of the ends of the adjustable steel arch frames away from the main body of the steel arch frame, connecting plates are rotatably installed on the two end surfaces of the connecting blocks, a rotating rod is rotatably installed between the middle parts of the connecting blocks and the connecting plates at the same end through a bearing, and the lower surfaces of the connecting plates are fixedly connected with the corresponding positions on the upper surfaces of the corresponding mounting plates.

[0020] By adopting the above technical solution: The setting of the rotating rod helps to rotate and limit between the connecting blocks and the connecting plates at the same end.

[0021] As a further solution of the utility model: Second bolts are threadedly inserted vertically at the four corners of the mounting plate, and the second bolts are all in a vertical state and penetrate the upper surface and the lower surface of the corresponding positions on the corresponding mounting plate.

[0022] By adopting the above technical solution: The setting of the second bolt helps to install and limit the mounting plate.

[0023] Compared with the prior art, the beneficial effects of the present utility model are:

[0024] In the present utility model, after the adjustment steel arch is slid and adjusted along the retention groove on the main body of the steel arch, the arc length of the steel arch is adjusted. The first bolt can position and limit between the main body of the steel arch and the adjustment steel arch through the threaded hole on the main body of the steel arch and the corresponding limit hole on the adjustment steel arch. During use, it is convenient to adjust the arc length of the steel arch, which helps the steel arch to meet the requirements of different arc lengths for the construction of the upper bearing box arch bridge, so as to ensure the applicable range of the steel arch and help the use of the steel arch.

[0025] 2. In the present utility model, the adjustment steel arch is slid along the retention groove on the main body of the steel arch to perform sliding adjustment on the adjustment steel arch. When the adjustment steel arch slides along the retention groove on the main body of the steel arch, the adjustment steel arch can slide along the limit block in the retention groove on the main body of the steel arch through the limit groove. The main body of the steel arch can limit the adjustment steel arch through the limit block in the retention groove and the limit groove on the adjustment steel arch, so as to stably slide the adjustment steel arch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural view of the present utility model;

[0027] Figure 2 is a schematic structural view of the connecting plate of the present utility model;

[0028] Figure 3 is a schematic structural view of the limit hole of the present utility model;

[0029] Figure 4 is a schematic structural view of the mounting plate of the present utility model;

[0030] Figure 5 is a schematic structural view of the limit block of the present utility model;

[0031] Figure 6 is a schematic structural view of the limit groove of the present utility model.

[0032] In the figure: 1. Main body of the steel arch; 2. Adjustment steel arch; 3. Retention groove; 4. Limit groove; 5. Limit block; 6. First bolt; 7. Second bolt; 8. Limit hole; 9. Connecting block; 10. Connecting plate; 11. Rotating rod; 12. Mounting plate; 13. Threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1 to 6 , in the embodiment of the present invention, an adjustable steel arch frame for the construction of a deck-type box arch bridge includes a steel arch frame main body 1. A retaining groove 3 is opened in the middle of the lower side of the steel arch frame main body 1. Two ends of the steel arch frame main body 1 located in the retaining groove 3 are both slidably installed with matching adjusting steel arch frames 2. First bolts 6 are threadedly inserted into the middle of both ends of the steel arch frame main body 1. Threaded holes 13 matching the first bolts 6 are opened in the middle of both ends of the steel arch frame main body 1. A number of matching limiting holes 8 are spaced apart at one end of each adjusting steel arch frame 2 away from the bolt head corresponding to the first bolt 6. Mounting plates 12 are rotatably installed at one end of each adjusting steel arch frame 2 away from the steel arch frame main body 1. After the sliding adjustment of the adjusting steel arch frame 2 along the retaining groove 3 on the steel arch frame main body 1 is completed, the arc length of the steel arch frame can be adjusted. The first bolt 6 can position and limit the steel arch frame main body 1 and the adjusting steel arch frame 2 through the threaded hole 13 on the steel arch frame main body 1 and the corresponding limiting hole 8 on the adjusting steel arch frame 2. During use, it is convenient to adjust the arc length of the steel arch frame, which helps the steel arch frame to meet the requirements of different arc lengths for the construction of deck-type box arch bridges, so as to ensure the applicable range of the steel arch frame and facilitate the use of the steel arch frame.

[0035] Among them, the upper sides of the threaded holes 13 penetrate through the corresponding upper sides of the steel arch frame main body 1, and the lower sides of the threaded holes 13 penetrate through the corresponding positions at the top of the retaining groove 3 in the steel arch frame main body 1. The threaded holes 13 on the steel arch frame main body 1 help to limit the first bolt 6. The upper sides of the adjusting steel arch frames 2 are in a matching and fitting state with the top of the retaining groove 3 in the steel arch frame main body 1, and the two side surfaces of the adjusting steel arch frames 2 are in a matching and fitting state with the corresponding positions in the retaining groove 3 in the steel arch frame main body 1. The retaining groove 3 on the steel arch frame main body 1 helps to limit the adjusting steel arch frame 2. Limiting blocks 5 are fixed in the middle of the inner surfaces of both sides of the steel arch frame main body 1 located in the retaining groove 3. Limiting grooves 4 matching the limiting blocks 5 are opened in the middle of both side surfaces of the adjusting steel arch frame 2. The steel arch frame main body 1 can fix and limit the limiting blocks 5.

[0036] The limiting blocks 5 are all located in the corresponding limiting grooves 4 on the corresponding adjusting steel arch frame 2. The limiting blocks 5 are all slidably connected to the corresponding limiting grooves 4 on the corresponding adjusting steel arch frame 2. The limiting blocks 5 and the limiting grooves 4 help to limit between the main body 1 of the steel arch frame and the adjusting steel arch frame 2. One end of the first bolt 6 away from the bolt head is inserted into the corresponding limiting hole 8 on the corresponding adjusting steel arch frame 2. The limiting holes 8 penetrate through the upper side and the lower side at the corresponding positions on the corresponding adjusting steel arch frame 2. The first bolt 6 and the limiting hole 8 can position between the main body 1 of the steel arch frame and the adjusting steel arch frame 2.

[0037] On the surface of one end of the adjusting steel arch frame 2 away from the main body 1 of the steel arch frame, connection blocks 9 are fixedly installed. On the two end surfaces of the connection blocks 9, connecting plates 10 are rotatably installed. Between the middle parts of the connection blocks 9 and the connecting plates 10 at the same end, a rotating rod 11 is rotatably installed through a bearing. The lower surfaces of the connecting plates 10 are fixedly connected to the corresponding positions on the upper surfaces of the corresponding mounting plates 12. The rotating rod 11 helps to rotate and limit between the connection blocks 9 and the connecting plates 10 at the same end. At the four corners of the mounting plate 12, second bolts 7 are threadedly inserted along the vertical direction. The second bolts 7 are all in a vertical state and penetrate through the upper surface and the lower surface at the corresponding positions on the corresponding mounting plate 12. The second bolts 7 help to install and limit the mounting plate 12.

[0038] The working principle of the present utility model is as follows: During the use process, when it is necessary to adjust the arc length of the steel arch frame according to the construction requirements of the upper bearing box arch bridge, the first bolt 6 is rotated and removed, so that the first bolt 6 moves and is removed along the threaded hole 13 on the main body 1 of the steel arch frame, so that the first bolt 6 is separated from the corresponding limiting hole 8 on the adjusting steel arch frame 2. After the first bolt 6 is removed along the threaded hole 13 on the main body 1 of the steel arch frame and the corresponding limiting hole 8 on the adjusting steel arch frame 2, the limiting effect of the first bolt 6 on between the main body 1 of the steel arch frame and the adjusting steel arch frame 2 is cancelled.

[0039] Furthermore, the adjusting steel arch frame 2 is slid along the retaining groove 3 on the main body 1 of the steel arch frame to perform sliding adjustment on the adjusting steel arch frame 2. When the adjusting steel arch frame 2 slides along the retaining groove 3 on the main body 1 of the steel arch frame, the adjusting steel arch frame 2 can slide along the limiting block 5 in the retaining groove 3 on the main body 1 of the steel arch frame through the limiting groove 4. The main body 1 of the steel arch frame can limit the adjusting steel arch frame 2 through the limiting block 5 in the retaining groove 3 and the limiting groove 4 on the adjusting steel arch frame 2, so as to facilitate the stable sliding of the adjusting steel arch frame 2. After the sliding adjustment of the adjusting steel arch frame 2 is completed, the first bolt 6 is threadedly inserted into the threaded hole 13 on the main body 1 of the steel arch frame, and the first bolt 6 is inserted into the corresponding limiting hole 8 on the adjusting steel arch frame 2. The first bolt 6 can position and limit between the main body 1 of the steel arch frame and the adjusting steel arch frame 2 through the threaded hole 13 on the main body 1 of the steel arch frame and the corresponding limiting hole 8 on the adjusting steel arch frame 2.

[0040] After the sliding adjustment of the adjusting steel arch 2 in the retaining groove 3 on the main body 1 of the steel arch is completed to adjust the arc length of the steel arch, after the arc length of the steel arch is adjusted to match the construction requirements of the through box arch bridge, the lower surface of the mounting plate 12 is aligned with the position where installation is required outside. The mounting plate 12 is rotated. When the mounting plate 12 rotates, it can drive the connecting plate 10 to rotate. When the connecting plate 10 rotates, it can rotate along the connecting block 9 through the rotating rod 11. After the rotation of the mounting plate 12 is completed, the lower surface of the mounting plate 12 is in a state of being matched and fitted with the position where installation is required outside. Further, the mounting plate 12 is installed with the position where installation is required outside through the second bolt 7. The second bolt 7 can fix and limit the mounting plate 12 and various components assembled on the mounting plate 12, which helps to stably use the mounting plate 12 and various components assembled on the mounting plate 12.

[0041] During the use process, it is convenient to adjust the arc length of the steel arch, which helps the steel arch to meet the requirements of different arc lengths for the construction of through box arch bridges, so as to ensure the applicable range of the steel arch and help to use the steel arch.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An adjustable steel arch frame for the construction of an upper-supported box arch bridge, comprising a main body of the steel arch frame (1), characterized in that: A retaining groove (3) is provided in the middle of the lower side of the steel arch frame body (1). At both ends of the steel arch frame body (1) located in the retaining groove (3), adjusting steel arch frames (2) that match each other are slidably installed. At the middle of both ends of the steel arch frame body (1), first bolts (6) are threadedly inserted. At the middle of both ends of the steel arch frame body (1), threaded holes (13) that match the first bolts (6) are provided correspondingly. At the middle of the adjusting steel arch frames (2), a number of limiting holes (8) that match the ends of the first bolts (6) away from the bolt heads are spaced apart. At the ends of the adjusting steel arch frames (2) away from the steel arch frame body (1), mounting plates (12) are rotatably installed.

2. The adjustable steel arch frame for the construction of an upper-supported box arch bridge according to claim 1, wherein: The upper sides of the threaded holes (13) penetrate through the corresponding upper sides of the steel arch frame body (1), and the lower sides of the threaded holes (13) penetrate through the corresponding positions at the top of the retaining groove (3) inside the steel arch frame body (1).

3. The adjustable steel arch frame for the construction of a through box arch bridge according to claim 2, wherein: The upper sides of the adjusting steel arch frames (2) are in a state of matching and fitting with the top inside the retaining groove (3) of the steel arch frame body (1), and the two side surfaces of the adjusting steel arch frames (2) are in a state of matching and fitting with the corresponding positions inside the retaining groove (3) of the steel arch frame body (1).

4. An adjustable steel arch frame for the construction of a through box arch bridge according to claim 3, characterized in that: At the middle of the inner surfaces of both sides inside the retaining groove (3) of the steel arch frame body (1), limiting blocks (5) are fixed. At the middle of the two side surfaces of the adjusting steel arch frames (2), limiting grooves (4) that match the limiting blocks (5) are provided correspondingly.

5. An adjustable steel arch frame for the construction of an upper-supported box arch bridge according to claim 4, characterized in that: The limiting blocks (5) are all located in the corresponding limiting grooves (4) on the corresponding adjusting steel arch frames (2), and the limiting blocks (5) are all slidably connected with the corresponding limiting grooves (4) on the corresponding adjusting steel arch frames (2).

6. The adjustable steel arch frame for the construction of an upper-supported box arch bridge according to claim 5, characterized in that: The ends of the first bolts (6) away from the bolt heads are all inserted into the corresponding limiting holes (8) on the corresponding adjusting steel arch frames (2), and the limiting holes (8) penetrate through the upper and lower sides of the corresponding positions on the corresponding adjusting steel arch frames (2).

7. The adjustable steel arch frame for the construction of a through box arch bridge according to claim 6, characterized in that: At the ends of the adjusting steel arch frames (2) away from the steel arch frame body (1), connection blocks (9) are fixed. At both ends of the connection blocks (9), connecting plates (10) are rotatably installed. Between the middle of the connection blocks (9) and the connecting plates (10) at the same end, a rotating rod (11) is rotatably installed through a bearing. The lower surfaces of the connecting plates (10) are fixedly connected to the corresponding positions on the upper surfaces of the corresponding mounting plates (12).

8. An adjustable steel arch frame for the construction of a through type box arch bridge according to claim 7, characterized in that: At the four corners of the mounting plates (12), second bolts (7) are threadedly inserted in the vertical direction. The second bolts (7) are all in a vertical state and penetrate through the upper and lower surfaces of the corresponding positions on the corresponding mounting plates (12).

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