Fabricated bridge steel structure box girder

Abstract

The utility model relates to a fabricated bridge steel structure box girder, and relates to the field of bridge steel structure box girders. The positioning device comprises a main positioning frame, the main positioning frame comprises a seat frame and corner seats, the corner seats are evenly arranged at the four corners of the upper end face of the seat frame, the corner seats are fixedly connected with the seat frame, two horizontal seats are symmetrically installed on the two sides of the seat frame, extending supports are installed on the horizontal seats and are in sliding connection with the horizontal seats, and the extending supports are fixedly connected with the horizontal seats. Reinforcing frames are symmetrically arranged at the two ends of the extending support. The angle seat is arranged on the main positioning frame, so that when the top plate is installed, the top plate can be fixed on the angle seat through the lower shell to be stably used, meanwhile, the horizontal seats are symmetrically installed at the two ends of the main positioning frame, and the extension supports are installed through the horizontal seats, so that the two ends of the top plate can be supported in an auxiliary mode through the extension supports; and the supporting position of the extension support can be slidably adjusted according to the size of the top plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge steel structure box girder, and in particular to an assembled bridge steel structure box girder. BACKGROUND

[0002] The steel box girder is also called a steel plate box girder, which is generally connected by full welding of a top plate, a bottom plate, a web plate, a transverse partition plate, a longitudinal partition plate and a stiffening rib. The steel box girder is generally used in a bridge with a large span and is called a steel box girder because of its box shape.

[0003] The Chinese patent with the publication number CN221052356U discloses an assembled bridge steel structure box girder, which comprises a bottom plate, the top end of the bottom plate is fixedly connected with a lower support plate, the top end of the lower support plate is fixedly connected with support rods on the left and right sides, the top end of the support rod is fixedly connected with an upper support plate, the bottom end of the upper support plate is fixedly connected with bearing columns on the left and right sides, the left and right sides of the bearing column are respectively fixedly connected with first and second inclined rods, the outer side of the support rod is fixedly connected with a side support plate, and the bottom end of the side support plate is fixedly connected with an inclined web plate.

[0004] In view of the related technologies in the above, it is found that most of the existing bridge steel structure box girders are formed by welding various steel frames to each other, so that the support position cannot be adjusted according to the actual installation needs during installation, which not only has a limited application range, but also has a high requirement on the installation precision. CONTENT OF THE UTILITY MODEL

[0005] In order to flexibly adjust the support position during installation to meet different use needs, the present application provides an assembled bridge steel structure box girder.

[0006] The present application provides an assembled bridge steel structure box girder, which adopts the following technical scheme:

[0007] An assembled bridge steel structure box girder comprises a main positioning frame, the main positioning frame comprises a seat frame and an angle seat, the angle seat is uniformly arranged at four corners of the upper end surface of the seat frame, and the angle seat is fixedly connected with the seat frame, two horizontal seats are symmetrically installed on the two sides of the seat frame, an extension support is installed on the horizontal seat, the extension support is slidingly connected with the horizontal seat, reinforcing frames are symmetrically arranged at the two ends of the extension support, the reinforcing frames are fixedly connected with the extension support, a top plate is fixedly installed on the upper end surface of the angle seat and the extension support, and a middle shaft rod is also fixedly installed between the extension supports.

[0008] By adopting the technical scheme, the corner seats are arranged on the four corners of the upper end surface of the seat frame through the structural arrangement of the main positioning frame, so that the corner seats can stably support the top plate after the top plate is installed on the main positioning frame, and the top plate can be limited and supported, so that the top plate can be stably installed on the main positioning frame, and the force on the two sides of the seat frame can be more balanced through the symmetrical arrangement of the two horizontal seats on the two sides of the seat frame, so that the uniformity of the overall force during the use of the bridge is ensured, damage due to uneven force is avoided, and the extension support is stably installed through the arrangement of the horizontal seat, so that the extension support can be adjusted in the horizontal position on the horizontal seat during use to support the top plate at different positions, so that the extension support can be adjusted and used according to actual needs during construction and installation, and the use is very convenient. The reinforcing frame is arranged symmetrically at the two ends of the extension support, so that the reinforcing frame can increase the overall use strength of the extension support during use, and the extension support can stably support the top plate during installation and use, and the middle shaft rod is fixedly installed between the two extension supports at the two ends, so that the stability of the equipment use is further increased through the middle shaft rod, and the safety of the equipment use is increased.

[0009] Optionally, the seat frame comprises an outer frame portion and a middle frame, the middle frame is installed in the outer frame portion, and the middle frame is fixedly connected with the outer frame portion.

[0010] By adopting the technical scheme, the middle frame is fixedly installed in the middle of the outer frame portion through the structural arrangement of the seat frame, so that the use strength of the outer frame portion can be increased through the middle frame during use, and the overall support stability of the seat frame is greatly increased.

[0011] Optionally, the horizontal seat comprises an installation plate and a guide seat, the guide seat is fixedly arranged on one side of the installation plate, and the installation plate is fixedly installed on the outer side surface of the outer frame portion.

[0012] By adopting the technical scheme, the guide seat can be fixedly installed on the outer side surface of the outer frame portion through the installation plate, and the two can be connected and fixed through bolts, and the extension support can be stably installed through the arrangement of the guide seat, and the extension support can be adjusted and used in position on the guide seat.

[0013] Optionally, the guide seat comprises a cross frame and a positioning shell, the positioning shell is arranged at the two ends of the cross frame, and the positioning shell is fixedly connected with the cross frame.

[0014] By adopting the technical scheme, the positioning shell is fixedly installed at the two ends of the cross frame through the structural arrangement of the guide seat, so that the two ends of the positioning shell are used as a whole during use, and the extension support is slidably installed in the positioning shell through the arrangement of the positioning shell, and the extension support and the positioning shell are connected through sliding fit, so that the support position of the extension support can be flexibly adjusted horizontally during use to meet different support requirements.

[0015] Optionally, the extension support comprises a seat shell and a guide transverse plate, the guide transverse plate is symmetrically arranged on one side of the seat shell, and the guide transverse plate is fixedly connected with the seat shell.

[0016] By adopting the technical scheme, the seat shell can be slidably installed in the positioning shell through the guide transverse plate during use through the structural arrangement of the extension support, so that the position of the seat shell can be changed by adjusting the position of the guide transverse plate in the positioning shell during use, and the lower end of the horizontal plate is assisted and supported through the arrangement of the seat shell.

[0017] Optionally, the seat shell comprises a bottom seat and a top seat, the top seat is arranged directly above the bottom seat, and a plurality of buffer blocks are fixedly installed between the top seat and the bottom seat.

[0018] By adopting the technical scheme, the buffer blocks are installed through the bottom seat during use through the structural arrangement of the seat shell, and then the top seat is stably supported by the buffer blocks, so that the top seat can be used to support the lower end of the top plate.

[0019] Optionally, a plurality of connecting ears matched with the reinforcing frame are arranged on the upper end surface of the guide transverse plate, and the connecting ears are vertically fixed on the upper end surface of the guide transverse plate.

[0020] By adopting the technical scheme, the connecting ears are arranged on the upper end surface of the guide transverse plate, so that the lower end of the reinforcing frame can be matched with the connecting ears during installation of the reinforcing frame, so that the reinforcing frame and the connecting ears can be connected through bolts during use, so that the seat shell and the guide transverse plate can be assisted and supported through the reinforcing frame, and the use strength of the extension support is increased.

[0021] Optionally, the reinforcing frame comprises a connecting portion and a multi-head rod, the connecting portion is fixedly installed on one side of the bottom seat, and the multi-head rod is fixedly installed at the head of the connecting portion, and the multi-head rod is fixedly connected with the connecting portion.

[0022] By adopting the technical scheme, the reinforcing frame can be connected and fixed with the seat shell through the connecting portion during use, and the seat shell and the guide horizontal plate can be supported by the reinforcing frame during use through the multi-head rod connected with different connecting ears.

[0023] Optionally, the lower end of the top plate is provided with a lower shell matched with the corner seat, and the lower shell is fixedly connected with the top plate.

[0024] By adopting the technical scheme, four lower shells matched with the corner seat are fixedly installed at the lower end of the top plate, so that the lower shells can be clamped on the corner seat to realize stable connection and use during installation of the top plate.

[0025] In summary, the present application has at least one of the following beneficial technical effects: the corner seat is arranged on the main positioning frame, so that the lower shell can be fixed on the corner seat to realize stable use during installation of the top plate, and the horizontal seat is symmetrically installed at both ends of the main positioning frame, the extension support is installed through the horizontal seat, so that the extension support can assist in supporting both ends of the top plate, and the support position of the extension support can be adjusted according to the size of the top plate, which is very convenient to use, and has the advantages of easy adjustment and stable support. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure schematic diagram in the embodiment of the present application.

[0027] Figure 2 is the perspective view of the main positioning frame in the embodiment of the present application.

[0028] Figure 3 is the perspective view of the horizontal seat and the extension support matched in the embodiment of the present application.

[0029] Figure 4 is Figure 3 the side view of the device shown.

[0030] Figure 5 is the perspective view of the reinforcing frame in the embodiment of the present application.

[0031] BRIEF DESCRIPTION OF DRAWINGS: 1, main positioning frame; 11, seat frame; 111, outer frame part; 112, middle frame; 12, corner seat; 2, horizontal seat; 21, mounting plate; 22, guide seat; 221, cross frame; 222, positioning shell; 3, extension support; 31, seat shell; 311, bottom seat; 312, top seat; 313, buffer block; 32, guide horizontal plate; 321, connecting ear; 4, reinforcing frame; 41, connecting portion; 42, multi-head rod; 5, top plate; 51, lower shell; 6, middle shaft rod. DETAILED DESCRIPTION

[0032] The application is further described in detail below with reference to the accompanying drawings.

[0033] The embodiment of the application discloses a fabricated bridge steel structure box girder. As shown in Figure 1 , Figure 2 and Figure 3 , a fabricated bridge steel structure box girder comprises a main positioning frame 1, the main positioning frame 1 comprises a seat frame 11 and a corner seat 12, the corner seats 12 are uniformly arranged on four corner edges of the upper end surface of the seat frame 11, and the corner seats 12 are fixedly connected with the seat frame 11, two horizontal seats 2 are symmetrically arranged on the two sides of the seat frame 11, an extension support 3 is arranged on the horizontal seat 2, the extension support 3 is slidingly connected with the horizontal seat 2, reinforcing frames 4 are symmetrically arranged at the two ends of the extension support 3, the reinforcing frames 4 are fixedly connected with the extension support 3, a top plate 5 is fixedly arranged on the upper end surface of the corner seat 12 and the extension support 3, and a middle shaft rod 6 is fixedly arranged between the extension supports 3. The structure of the main positioning frame 1 is arranged to ensure that the corner seats 12 can be arranged on the four corner edges of the upper end surface of the seat frame 11 during use, so that the corner seats 12 can stably support the top plate 5 after the top plate 5 is arranged on the main positioning frame 1, and the top plate 5 can be limited and supported, so that the top plate 5 can be stably arranged on the main positioning frame 1 during use, meanwhile, two horizontal seats 2 are symmetrically arranged on the two sides of the seat frame 11, so that the force on the two sides of the seat frame 11 can be more balanced, the overall force during use of the bridge can be uniform, damage caused by uneven force can be avoided, the extension support 3 can be stably arranged by the horizontal seat 2, so that the horizontal position of the extension support 3 can be adjusted on the horizontal seat 2 during use to support the top plate 5 at different positions, so that the extension support 3 can be adjusted and used according to actual needs during construction and installation, and the use is very convenient, the reinforcing frames 4 are symmetrically arranged at the two ends of the extension support 3, so that the reinforcing frames 4 can be used to increase the overall use strength of the extension support 3 during use, the extension support 3 can stably support the top plate 5 during installation and use, and the middle shaft rod 6 is fixedly arranged between the two extension supports 3, so that the middle shaft rod 6 can be used to further increase the stability and safety of the equipment during use. The seat frame 11 comprises an outer frame part 111 and a middle frame 112, the middle frame 112 is arranged in the outer frame part 111, and the middle frame 112 is fixedly connected with the outer frame part 111. The structure of the seat frame 11 is arranged to ensure that the middle frame 112 can be fixedly arranged in the middle of the outer frame part 111 during use, so that the use strength of the outer frame part 111 can be increased by the middle frame 112 during use, and the overall support stability of the seat frame 11 is greatly increased.

[0034] As shown in Figure 3 and Figure 4As shown, the horizontal seat 2 comprises a mounting plate 21 and a guide seat 22 fixedly arranged on one side of the mounting plate 21, and the mounting plate 21 is fixedly mounted on the outer side of the outer frame portion 111. The structure of the horizontal seat 2 is arranged to ensure that the guide seat 22 can be fixedly mounted on the outer side of the outer frame portion 111 through the mounting plate 21 during installation, and the two can be connected and fixed by bolts. The guide seat 22 is arranged to facilitate stable installation and use of the extension support 3, and the extension support 3 can be adjusted in use position by sliding on the guide seat 22. The guide seat 22 comprises a cross frame 221 and a positioning shell 222 arranged at both ends of the cross frame 221, and the positioning shell 222 is fixedly connected with the cross frame 221. The structure of the guide seat 22 is arranged to facilitate the installation of the positioning shell 222 at both ends of the cross frame 221 during use, so that the two positioning shells 222 are used as a whole during use. The positioning shell 222 is arranged to facilitate the sliding installation of the extension support 3 in the positioning shell 222, and the two can be connected by sliding fit, so that the support position of the extension support 3 can be flexibly adjusted horizontally during use to meet different support requirements.

[0035] Referring to Figure 3 and Figure 4 As shown, the extension support 3 comprises a seat shell 31 and a guide horizontal plate 32 symmetrically arranged on one side of the seat shell 31, and the guide horizontal plate 32 is fixedly connected with the seat shell 31. The structure of the extension support 3 is arranged to ensure that the seat shell 31 can be slidingly installed in the positioning shell 222 through the guide horizontal plate 32 during use, so that the position of the seat shell 31 can be changed by adjusting the position of the guide horizontal plate 32 in the positioning shell 222 during use. The seat shell 31 is arranged to facilitate auxiliary support of the lower end of the horizontal plate. The seat shell 31 comprises a bottom seat 311 and a top seat 312 arranged directly above the bottom seat 311, and a plurality of buffer blocks 313 are fixedly mounted between the top seat 312 and the bottom seat 311. The structure of the seat shell 31 is arranged to ensure that the buffer blocks 313 can be installed through the bottom seat 311 during use, and then the top seat 312 can be stably supported by the buffer blocks 313, so that the top seat 312 can be used to support the lower end of the top plate 5. The upper end surface of the guide horizontal plate 32 is provided with a plurality of connecting ears 321 matched with the reinforcing frame 4, and the connecting ears 321 are vertically fixed on the upper end surface of the guide horizontal plate 32. The connecting ears 321 are arranged on the upper end surface of the guide horizontal plate 32 to facilitate the installation of the reinforcing frame 4, so that the lower end of the reinforcing frame 4 can be matched with the connecting ears 321 during installation. The reinforcing frame 4 and the connecting ears 321 can be connected by bolts during use to ensure that the reinforcing frame 4 can assist in supporting the seat shell 31 and the guide horizontal plate 32, thereby increasing the use strength of the extension support 3.

[0036] Referring to Figure 2 and Figure 5 As shown in the figure, the reinforcing frame 4 comprises a connecting part 41 and a multi-head rod 42, the connecting part 41 is fixedly installed on one side of the bottom seat 311, the multi-head rod 42 is fixedly installed on the head of the connecting part 41, and the multi-head rod 42 is fixedly connected with the connecting part 41. The structure of the reinforcing frame 4 is arranged to ensure that it can be connected and fixed with the seat shell 31 through the connecting part 41 during use, and the multi-head rod 42 is arranged to be connected with different connecting ears 321 respectively, so that the seat shell 31 and the guide horizontal plate 32 can be supported by the reinforcing frame 4 during use. The lower end of the top plate 5 is provided with a lower shell 51 matched with the corner seat 12, and the lower shell 51 is fixedly connected with the top plate 5. Four lower shells 51 matched with the corner seat 12 are fixedly installed at the lower end of the top plate 5, so that the lower shell 51 can be clamped on the corner seat 12 to realize stable connection and use when the top plate 5 is installed.

[0037] The implementation principle of the assembled bridge steel structure box girder of the embodiment of the present application is that the position of the top seat 312 can be changed by adjusting the position of the extension support 3 on the horizontal seat 2 during actual installation, and the positions of the two extension supports 3 on the horizontal seat 2 need to be ensured to be the same during adjustment, so that the stress balance of the two ends of the main positioning frame 1 during use can be ensured, so that when the top plate 5 is installed, the lower shell 51 at the lower end is sleeved on the corner seat 12 of the seat frame 11, so that the top plate 5 and the main positioning frame 1 can be stably connected and used, and the two ends of the top plate 5 can be stably supported by the seat shell 31.

[0038] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A fabricated bridge steel structure box girder comprising a main positioning frame (1), characterized in that: The main positioning frame (1) comprises a seat frame (11) and a corner seat (12), the corner seat (12) is uniformly arranged at the four corners of the upper end surface of the seat frame (11), and the corner seat (12) is fixedly connected with the seat frame (11), two horizontal seats (2) are symmetrically arranged on the two sides of the seat frame (11), an extension support (3) is arranged on the horizontal seat (2), the extension support (3) is slidably connected with the horizontal seat (2), and reinforcing frames (4) are symmetrically arranged at the two ends of the extension support (3), the reinforcing frames (4) are fixedly connected with the extension support (3), top plates (5) are fixedly arranged on the upper end surfaces of the corner seat (12) and the extension support (3), and a middle shaft rod (6) is fixedly arranged between the extension supports (3).

2. The prefabricated steel bridge structure box girder according to claim 1, characterized in that: The seat frame (11) comprises an outer frame part (111) and a middle frame (112), the middle frame (112) is arranged in the outer frame part (111), and the middle frame (112) is fixedly connected with the outer frame part (111).

3. The prefabricated steel bridge structure box girder according to claim 2, characterized in that: The horizontal seat (2) comprises a mounting plate (21) and a guide seat (22), the guide seat (22) is fixedly arranged on one side of the mounting plate (21), and the mounting plate (21) is fixedly arranged on the outer side surface of the outer frame part (111).

4. The prefabricated steel bridge structure box girder according to claim 3, characterized in that: The guide seat (22) comprises a cross frame (221) and a positioning shell (222), the positioning shell (222) is arranged at the two ends of the cross frame (221), and the positioning shell (222) is fixedly connected with the cross frame (221).

5. The prefabricated steel bridge structure box girder according to claim 4, characterized in that: The extension support (3) comprises a seat shell (31) and a guide horizontal plate (32), the guide horizontal plate (32) is symmetrically arranged on one side of the seat shell (31), and the guide horizontal plate (32) is fixedly connected with the seat shell (31).

6. The prefabricated steel bridge structure box girder according to claim 5, characterized in that: The seat shell (31) comprises a bottom seat (311) and a top seat (312), the top seat (312) is arranged directly above the bottom seat (311), and a plurality of buffer blocks (313) are fixedly arranged between the top seat (312) and the bottom seat (311).

7. The prefabricated steel bridge structure box girder according to claim 6, characterized in that: A plurality of connecting ears (321) matched with the reinforcing frames (4) are arranged on the upper end surface of the guide horizontal plate (32), and the connecting ears (321) are vertically fixed on the upper end surface of the guide horizontal plate (32).

8. The prefabricated steel bridge structure box girder according to claim 7, characterized in that: The reinforcing frame (4) comprises a connecting part (41) and a multi-head rod (42), the connecting part (41) is fixedly arranged on one side of the bottom seat (311), and the multi-head rod (42) is fixedly arranged at the head of the connecting part (41), and the multi-head rod (42) is fixedly connected with the connecting part (41).

9. The prefabricated steel bridge structure box girder according to claim 8, characterized in that: A lower shell (51) matched with the corner seat (12) is arranged at the lower end of the top plate (5), and the lower shell (51) is fixedly connected with the top plate (5).

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