Fabricated truss for bridge construction

Abstract

The utility model discloses an assembly type bridge construction truss which comprises an upper transverse plate and a lower transverse plate, two vertical plates are connected between the upper transverse plate and the lower transverse plate, the vertical plates are connected with a positioning mechanism used for positioning a cross beam, the positioning mechanism comprises an upper pressing plate, a side pressing plate and a rotating column, the end of the upper pressing plate is movably connected to the vertical plates, and the end of the side pressing plate is movably connected to the rotating column. The top of the side pressing plate is connected to the upper pressing plate, the rotating column is used for driving the side pressing plate to move in a reciprocating mode, and the side pressing plate is connected with a locking mechanism used for locking the side pressing plate. The upper pressing plate is tightly pressed on the top of the cross beam, the side pressing plate is tightly pressed on the side face of the cross beam, the cross beam can be installed and fixed, operation is easy and convenient, the upper pressing plate can ascend and descend, the upper pressing plate is matched with the side pressing plate in use, the cross beam locking device can be suitable for locking cross beams of different sizes, the stability of the cross beams is guaranteed, applicability is high, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a truss for assembled bridge construction. Background Technique

[0002] A bridge refers to a structure erected over rivers, lakes and seas to enable vehicles, pedestrians, etc. to pass smoothly. To adapt to the modern rapidly developing transportation industry, a bridge is also extended to a building that is erected across mountain streams, poor geological conditions or to meet other transportation needs to make passage more convenient. The assembled highway steel bridge is a kind of bridge, which is a prefabricated bridge that can be disassembled, erected quickly, and is mainly used for emergency repair and engineering construction. It has been mass-produced in China since the 1960s. Its main component is a truss, which mainly bears axial tension or compression, so that the strength of the material can be fully utilized. When the span is large, it can save materials compared with a solid web beam, reduce its own weight and increase its stiffness.

[0003] When the existing truss is in use, it is usually locked and fixed by U-shaped bolts. The sizes of the cross beams vary according to actual installation requirements, and thus U-shaped bolts of corresponding sizes need to be matched, increasing the manufacturing cost and the applicability needs to be strengthened. Content of the Utility Model

[0004] The purpose of the utility model is to provide a truss for assembled bridge construction, which has the advantages of being applicable to locking cross beams of different sizes, ensuring the stability of the cross beams, and having strong applicability, and solves the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a truss for assembled bridge construction, including an upper cross plate and a lower cross plate, two vertical plates are connected between the upper cross plate and the lower cross plate, and a positioning mechanism for cross beam positioning is connected to the vertical plate. The positioning mechanism includes an upper pressing plate, a side pressing plate, and a rotating column. The end of the upper pressing plate is movably connected to the vertical plate. The top of the side pressing plate is connected to the upper pressing plate. The rotating column is used to drive the side pressing plate to reciprocate. The side pressing plate is connected with a locking mechanism for locking the side pressing plate.

[0006] When the cross beam is in the positioning state, the upper pressing plate presses on the top of the cross beam, the side pressing plate presses on the side of the cross beam, and the locking mechanism locks the side pressing plate.

[0007] Preferably, the positioning mechanism further includes a moving block, two extension plates, a sliding block, a rotating handle, and a sliding groove. The moving block is used for guiding the upper pressing plate. The extension plates are connected to the two sides of the bottom of the upper pressing plate. The sliding groove is arranged on the upper pressing plate. The sliding block is slidably connected to the sliding groove. The rotating column is used to drive the sliding block to move. The rotating handle is connected to one end of the rotating column. The top of the side pressing plate is connected to the sliding block.

[0008] Preferably, the moving block is fixed to the end of the upper pressing plate, and the moving block is slidably connected to a vertical groove provided in the vertical plate.

[0009] Preferably, the rotating column penetrates through the sliding block, and the rotating column is threadedly connected to the sliding block. The other end of the rotating column is rotatably connected to the upper pressing plate.

[0010] Preferably, the locking mechanism includes a nut, an anti-slip pad, and a stud. The end of the stud is connected to the side pressing plate. The anti-slip pad is sleeved on the stud. The nut is threadedly connected to the stud, and the nut presses against the anti-slip pad.

[0011] Preferably, the lower cross plate is provided with a guiding groove and an oblong hole. The guiding groove communicates with the oblong hole, and the guiding groove matches the side pressing plate. The stud matches the oblong hole.

[0012] Preferably, four web members, vertical members, and reinforcing plates are provided between the upper cross plate and the lower cross plate. The reinforcing plate is welded to the midpoint of the vertical member. The web members are in an X-shaped structure.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing a positioning mechanism and a locking mechanism, the present utility model can rotate the rotating handle to drive the rotating column to rotate, realize the reciprocating movement of the sliding block, and further facilitate the movement of the side pressing plate. Then, rotate the nut to press against the lower cross plate, apply a downward pulling force to the side pressing plate, so that the upper pressing plate presses against the top of the cross beam, and the side pressing plate presses against the side of the cross beam, which can realize the installation and fixation of the cross beam. The operation is simple and convenient. Moreover, the upper pressing plate can perform a lifting action. Coupled with the use of the side pressing plate, it can be applicable to the locking of cross beams of different sizes, with strong applicability and wide use range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front perspective view of the present utility model;

[0015] Figure 2 is Figure 1 a partial view of

[0016] Figure 3 is the schematic structural view of the bottom of the lower cross plate of the present utility model;

[0017] Figure 4 is Figure 3 a partial view of

[0018] Figure 5 is the schematic connection structure view of the locking mechanism and the side pressing plate of the present utility model.

[0019] In the figure: 1. Upper cross plate; 2. Lower cross plate; 3. Web member; 4. Vertical member; 5. Reinforcing plate; 6. Vertical plate; 7. Vertical groove; 8. Moving block; 9. Upper pressing plate; 10. Side pressing plate; 11. Guide groove; 12. Extension plate; 13. Rotating column; 14. Rotating handle; 15. Nut; 16. Sliding block; 17. Elongated circular hole; 18. Anti-slip pad; 19. Sliding groove; 20. Stud. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 5 , the present invention provides a truss for prefabricated bridge construction, including an upper cross plate 1 and a lower cross plate 2. Two vertical plates 6 are connected between the upper cross plate 1 and the lower cross plate 2. The vertical plate 6 is connected with a positioning mechanism for beam positioning. The positioning mechanism includes an upper pressing plate 9, a side pressing plate 10, and a rotating column 13. The end of the upper pressing plate 9 is movably connected to the vertical plate 6. The top of the side pressing plate 10 is connected to the upper pressing plate 9. The rotating column 13 is used to drive the side pressing plate 10 to reciprocate. The side pressing plate 10 is connected with a locking mechanism for locking the side pressing plate 10.

[0022] The rotatable rotating handle 14 drives the rotating column 13 to rotate, realizing the reciprocating movement of the sliding block 16, thereby facilitating the movement of the side pressing plate 10. Then, the nut 15 is rotated to press against the lower cross plate 2, applying a downward pulling force to the side pressing plate 10, so that the upper pressing plate 9 presses against the top of the beam, and the side pressing plate 10 presses against the side of the beam, which can realize the installation and fixation of the beam. The operation is simple and convenient, and it can be applied to the locking of beams of different sizes, with strong applicability.

[0023] The positioning mechanism further includes a moving block 8, two extension plates 12, a sliding block 16, a rotating handle 14, and a sliding groove 19. The moving block 8 is used for guiding the upper pressing plate 9. The extension plates 12 are connected to the two sides of the bottom of the upper pressing plate 9. The sliding groove 19 is arranged on the upper pressing plate 9. The sliding block 16 is slidably connected to the sliding groove 19. The rotating column 13 is used to drive the sliding block 16 to move. The rotating handle 14 is connected to one end of the rotating column 13. The top of the side pressing plate 10 is connected to the sliding block 16. When the upper pressing plate 9 presses against the top of the beam, the extension plates 12 also press against the upper pressing plate 9, increasing the contact area and avoiding the sliding hidden danger of the beam. At the same time, friction surfaces are provided at the bottoms of the upper pressing plate 9 and the extension plates 12, which can improve the contact friction force and further ensure the stability of the beam.

[0024] The moving block 8 is fixed to the end of the upper pressure plate 9, and the moving block 8 is slidably connected to the vertical groove 7 provided in the vertical plate 6. When the upper pressure plate 9 moves, the moving block 8 slides in the vertical groove 7, which can improve the stability of the lifting of the upper pressure plate 9.

[0025] The rotating column 13 passes through the sliding block 16, and the rotating column 13 is threadedly connected to the sliding block 16. The other end of the rotating column 13 is rotatably connected to the upper pressure plate 9. By rotating the rotating handle 14, the rotating column 13 can be driven to rotate, so that the sliding block 16 slides in the sliding groove 19, and the side pressure plate 10 can be reciprocally moved along the horizontal direction. Cooperating with the use of the upper pressure plate 9, crossbeams of different sizes can be positioned, and the applicability is strong.

[0026] The locking mechanism includes a nut 15, an anti-slip pad 18, and a stud 20. The end of the stud 20 is connected to the side pressure plate 10. The anti-slip pad 18 is sleeved on the stud 20. The nut 15 is threadedly connected to the stud 20, and the nut 15 presses against the anti-slip pad 18. By using a tool to rotate the nut 15 and press it against the anti-slip pad 18, and the anti-slip pad 18 presses against the bottom of the lower cross plate 2, a downward pulling force is applied to the side pressure plate 10, so that the upper pressure plate 9 presses against the crossbeam, and the anti-slip pad 18 can prevent the nut 15 from loosening.

[0027] The lower cross plate 2 is provided with a guide groove 11 and an oblong hole 17. The guide groove 11 is communicated with the oblong hole 17, and the guide groove 11 matches the side pressure plate 10. The stud 20 matches the oblong hole 17. The side pressure plate 10 can be lifted and horizontally moved in the guide groove 11, playing a guiding role.

[0028] Four web members 3, vertical members 4, and reinforcing plates 5 are provided between the upper cross plate 1 and the lower cross plate 2. The reinforcing plate 5 is welded to the midpoint of the vertical member 4. The web members 3 are in an X-shaped structure. The two ends of the upper web member 3 are welded to the upper cross plate 1 and the reinforcing plate 5, and the two ends of the lower web member 3 are welded to the lower cross plate 2 and the reinforcing plate 5. The two ends of the vertical plate 6 are also welded to the upper cross plate 1 and the lower cross plate 2, so that the truss has good compressive resistance and high structural strength.

[0029] Working principle: During the truss assembly process, the crossbeam is placed on the lower cross plate 2 and abuts against the inner side of the vertical plate 6. Then, rotate the rotating handle 14 to drive the rotating column 13 to rotate. The rotating column 13 can drive the sliding block 16 to move, synchronously driving the side pressure plate 10 to move, so that the side pressure plate 10 presses against the side of the crossbeam. Further, use a tool to rotate the nut 15, so that the nut 15 presses against the bottom of the lower cross plate 2, applying a downward pulling force to the side pressure plate 10, so that the upper pressure plate 9 presses against the top of the crossbeam, thereby locking and fixing the crossbeam. The use is safe and reliable. And the upper pressure plate 9 can perform lifting actions. Cooperating with the use of the side pressure plate 10, it can be applicable to the locking of crossbeams of different sizes, with strong applicability and wide use range.

[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A truss for prefabricated bridge construction, comprising an upper cross plate (1) and a lower cross plate (2), and two vertical plates (6) are connected between the upper cross plate (1) and the lower cross plate (2), characterized in that, The vertical plate (6) is connected with a positioning mechanism for positioning the cross beam. The positioning mechanism includes an upper pressing plate (9), a side pressing plate (10), and a rotating column (13). The end of the upper pressing plate (9) is movably connected to the vertical plate (6). The top of the side pressing plate (10) is connected to the upper pressing plate (9). The rotating column (13) is used to drive the side pressing plate (10) to reciprocate. The side pressing plate (10) is connected with a locking mechanism for locking the side pressing plate (10). When the cross beam is in the positioning state, the upper pressing plate (9) presses on the top of the cross beam, the side pressing plate (10) presses on the side of the cross beam, and the locking mechanism locks the side pressing plate (10).

2. The truss for prefabricated bridge construction according to claim 1, characterized in that, The positioning mechanism further includes a moving block (8), two lengthening plates (12), a sliding block (16), a rotating handle (14), and a sliding groove (19). The moving block (8) is used for guiding the upper pressing plate (9). The lengthening plates (12) are connected to the bottom sides of the upper pressing plate (9). The sliding groove (19) is arranged on the upper pressing plate (9). The sliding block (16) is slidably connected to the sliding groove (19). The rotating column (13) is used to drive the sliding block (16) to move. The rotating handle (14) is connected to one end of the rotating column (13). The top of the side pressing plate (10) is connected to the sliding block (16).

3. The truss for prefabricated bridge construction according to claim 2, characterized in that, The moving block (8) is fixed to the end of the upper pressing plate (9), and the moving block (8) is slidably connected to a vertical groove (7) arranged in the vertical plate (6).

4. The truss for prefabricated bridge construction according to claim 2, characterized in that, The rotating column (13) penetrates through the sliding block (16), and the rotating column (13) is threadedly connected to the sliding block (16). The other end of the rotating column (13) is rotatably connected to the upper pressing plate (9).

5. A truss for prefabricated bridge construction according to claim 1, characterized in that, The locking mechanism includes a nut (15), an anti-slip pad (18), and a stud (20). The end of the stud (20) is connected to the side pressing plate (10). The anti-slip pad (18) is sleeved on the stud (20). The nut (15) is threadedly connected to the stud (20), and the nut (15) presses on the anti-slip pad (18).

6. The truss for prefabricated bridge construction according to claim 5, characterized in that, The lower cross plate (2) is provided with a guiding groove (11) and an oblong hole (17). The guiding groove (11) is communicated with the oblong hole (17), and the guiding groove (11) matches the side pressing plate (10). The stud (20) matches the oblong hole (17).

7. A truss for prefabricated bridge construction according to claim 1, characterized in that, Four web members (3), vertical members (4), and reinforcing plates (5) are arranged between the upper cross plate (1) and the lower cross plate (2). The reinforcing plate (5) is welded to the midpoint of the vertical member (4). The web members (3) are in an X-shaped structure.

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