Steel structure truss bridge

Abstract

The utility model provides a steel structure truss bridge which comprises a bottom frame (1) and is characterized in that a prefabricated plate (4) and chord members (5) are arranged at the upper end of the bottom frame (1), web members (6) are arranged between the chord members (5), a pushing assembly (3) is arranged between the bottom frame (1) and the chord members (5), and an installation assembly (2) is arranged between the bottom frame (1) and the prefabricated plate (4). By arranging the mounting assembly, when a prefabricated plate is mounted to the top of the bottom frame, the prefabricated plate is dragged, so that a second clamping block is clamped into a sliding cavity, then a driving piece drives a two-way screw to rotate, so that first clamping blocks on the two sides move until the first clamping blocks are clamped and matched with the second clamping block, and therefore the second clamping block is fixed; therefore, the prefabricated slab is rapidly fixed, the installation steps are saved, time and labor are saved, meanwhile, the situation that when the installation position of one screw is staggered, the current screw or even other installed bolts need to be taken down and then matched and aligned is avoided, and the installation efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure truss bridges, in particular to a steel structure truss bridge. Background Art

[0002] A steel truss bridge is a bridge that uses a steel truss as the upper load-bearing component. A steel truss bridge usually includes a base frame, precast panels, and multiple chords and webs. During construction, the base frame is first bolted to the piers, and then the chords are fixed to the base frame. The webs are then bolted between the two chords to form the upper steel truss. The precast panels are then bolted to the base frame, and finally concrete is poured to complete the construction of the small sightseeing bridge.

[0003] When installing a steel truss bridge in the prior art, it is necessary to first align the mounting holes on the prefabricated plate with the mounting holes at the corresponding positions on the base frame, and then insert bolts to fix them. On the one hand, too many bolts need to be installed, which is time-consuming and labor-intensive. On the other hand, once one of the screw rods is misaligned, it is necessary to remove the current screw rod or even other installed bolts and then align them, which reduces the installation efficiency. In addition, the installation of the chord in the prior art also requires installing fixings at both ends of the chord. During the installation and alignment process of one end, there is also the possibility that the other end that has been installed will be removed for alignment, which will also reduce the installation efficiency of the chord. At the same time, the weight of a single chord is also heavy, and the installation and transportation process is time-consuming and labor-intensive, and the loading and unloading efficiency is low.

[0004] In the prior art, there are technical solutions for achieving the installation of bridge trusses and panels by plugging or snapping. For example, see the patent application with publication number CN115897363A published on April 4, 2023, which mentions a steel structure bridge beam spliced ​​truss. Its description paragraph

[0038] records that one end of the longitudinal beam 3 and the top of the column 1 are plugged into the interior of the cross beam 2 and plugged together, thereby fixing the column 1, cross beam 2 and longitudinal beam 3 together; see also the patent application with publication number CN116005540A A segmented steel truss bridge and its construction method mentioned in the patent application with a publication date of April 25, 2023, paragraph

[0034] of its specification records that the road panel 600 is inserted into the first slot 324 inside the supporting beam 300 through the bottom plug block 326 to achieve the installation and fixation between the road panel 600 and the supporting beam 300; you can also refer to the connection node between the chord and the web of a steel truss mentioned in the patent application with publication number CN216340130U with a publication date of April 19, 2022, paragraph

[0040] of its specification records that the diagonal web 4 is connected to the partition 9 through the connecting rod 7 at the end, thereby increasing the structural stability of the steel truss.

[0005] Therefore, there is an urgent need to provide a steel structure truss bridge to solve the defects and shortcomings in the above-mentioned prior art. Utility Model Content

[0006] In order to solve the defects and deficiencies in the above-mentioned prior art, the present invention proposes a steel structure truss bridge.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A steel truss bridge includes a base frame, characterized in that a prefabricated plate and a chord are provided at the upper end of the base frame, a web is provided between the chords, a pushing assembly is provided between the base frame and the chords, and an installation assembly is provided between the base frame and the prefabricated plate.

[0009] As a further preferred embodiment of the present invention, the installation assembly includes a sliding cavity opened inside the base frame, the interior of the sliding cavity is slidably connected to a first card block, and second card blocks are fixed on both sides of the bottom of the prefabricated panel, and the first card block can slide relative to the second card block and be plugged into and matched with it.

[0010] As a further preferred embodiment of the present invention, a bidirectional screw is rotatably connected inside the sliding cavity, and the bidirectional screw is threadedly connected to the first clamping block.

[0011] As a further preferred embodiment of the present invention, external threads in opposite directions are provided on both sides of the bidirectional screw.

[0012] As a further preferred embodiment of the present invention, a rotating chamber is provided inside the base frame, a driving member is provided inside the rotating chamber, and the driving member is fixedly connected to the bidirectional screw.

[0013] As a further preferred embodiment of the present invention, front operating holes are respectively opened on both sides of the rotating chamber, and a rear operating hole is opened at the right end of the base frame.

[0014] As a further preferred embodiment of the present invention, the pushing assembly includes slideways opened on both sides of the top of the base frame, and wheels are installed at the bottom of the chord rod. The wheels are located inside the slideways and can slide relatively.

[0015] As a further preferred embodiment of the present invention, an insertion rod is slidably inserted into one side of the base frame, and the insertion rod passes through the base frame and is inserted into the interior of the chord rod.

[0016] As a further preferred embodiment of the present invention, a plurality of the insertion rods are evenly arranged at positions corresponding to the chord rods along the length direction of the bridge body.

[0017] As a further preferred embodiment of the present invention, a protrusion is provided at the end of the insertion rod.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention include:

[0019] 1) The utility model provides a steel structure truss bridge. By setting up an installation component, when installing a prefabricated panel to the top of the base frame, the prefabricated panel is dragged so that the second clamping block is clamped into the sliding cavity, and then the bidirectional screw is driven by a driving member to rotate so that the first clamping blocks on both sides move until the first clamping block is engaged with the second clamping block, thereby fixing the second clamping block, and then quickly fixing the prefabricated panel, saving installation steps, time and labor, and avoiding the need to remove the current screw or even other installed bolts for alignment when one of the screw installation positions is misaligned, thereby further improving installation efficiency.

[0020] 2) The utility model provides a steel structure truss bridge. By setting a pushing component, after the top of the chord is fixed, the chord is pushed, and the bottom of the chord is slid to a preset position through the sliding cooperation of the wheels and the slide. While saving time and effort, it reduces the possibility of removing the installed end for alignment during the installation and alignment of one end. By inserting the insertion rod through the base frame and then inserting it into the interior of the chord, loading and unloading are convenient and quick, further improving the loading and unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the propulsion assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the cross section of the installation component of the utility model;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of another cross-section of the installation component of the present invention.

[0025] Legend: 1. Base frame; 2. Mounting assembly; 3. Pushing assembly; 4. Prefabricated panel; 5. Chord; 6. Web; 21. Sliding cavity; 22. First clamping block; 23. Second clamping block; 24. Rotating cavity; 25. Driving member; 26. Bidirectional screw; 27. Front operating hole; 28. Rear operating hole; 31. Slide; 32. Insert rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] [First embodiment]

[0030] Reference Figure 1-4 The figure shows a technical solution provided by the first embodiment of the present utility model, which provides a steel structure truss bridge, such as Figure 1 As shown, it includes a base frame 1, a prefabricated panel 4 and a chord 5 are provided at the upper end of the base frame 1, a web 6 is provided between the chords 5, and a pushing component 3 is provided between the base frame 1 and the chord 5. By providing the pushing component, while saving time and labor, loading and unloading are convenient and quick, and the loading and unloading efficiency is further improved; an installation component 2 is provided between the base frame 1 and the prefabricated panel 4. By providing the installation component, the prefabricated panel can be quickly fixed, the installation steps are saved, time and labor are saved, and the installation efficiency is further improved.

[0031] like Figure 3-4As shown, the installation component 2 in this embodiment includes a sliding cavity 21 opened inside the base frame 1, and the sliding cavity 21 is slidably connected to the inside of the first card block 22, and the second card blocks 23 are fixed on both sides of the bottom of the prefabricated panel 4. The first card block 22 can slide relative to the second card block 23 and be plugged into and matched with it. By setting the installation component, when installing the prefabricated panel to the top of the base frame, the prefabricated panel is dragged so that the second card block is inserted into the sliding cavity, and then the bidirectional screw is driven by the driving member to rotate so that the first card blocks on both sides move until the first card block is engaged with the second card block, thereby fixing the second card block, and then quickly fixing the prefabricated panel, saving installation steps, time and effort.

[0032] In order to realize the sliding of the first clamping block 22 inside the sliding cavity 21, a bidirectional screw 26 is rotatably connected inside the sliding cavity 21, and the bidirectional screw 26 is threadedly connected to the first clamping block 22. By driving the bidirectional screw 26 to rotate, the first clamping block 22 threadedly connected thereto can slide axially along the bidirectional screw 26 inside the sliding cavity 21; external threads in opposite directions are provided on both sides of the bidirectional screw 26, so that the first clamping blocks 22 on both sides thereof can slide toward or away from each other.

[0033] In order to drive the bidirectional screw 26 to rotate, a rotating chamber 24 is opened inside the base frame 1, and a driving member 25 is provided inside the rotating chamber 24. The driving member 25 is fixedly connected to the bidirectional screw 26, and the bidirectional screw 26 is driven to rotate synchronously by the rotation of the driving member. In this embodiment, the driving member 25 can select corresponding driving elements according to actual needs, such as nuts, gears or other forms of driving members, etc. Correspondingly, the corresponding driving member can be driven by components such as nut sleeves and racks to realize rotation. To facilitate the rotation of the driving member 25, front operating holes 27 are respectively opened on both sides of the rotating chamber 24, and a rear operating hole 28 is opened at the right end of the base frame 1, so that components such as nut sleeves and racks can be inserted to drive the corresponding driving member to rotate.

[0034] like Figure 2 As shown, the pushing assembly 3 includes slides 31 opened on both sides of the top of the base frame 1, and wheels are installed at the bottom of the chord 5. The wheels are located inside the slides 31 and can slide relative to the slides 31. The bottom of the chord is slid to a preset position through the sliding cooperation between the wheels and the slides, thereby saving time and effort.

[0035] To position the bottom end of the chord 5, a rod 32 is slidably inserted into one side of the base frame 1. After passing through the base frame 1, the rod 32 is inserted into the interior of the chord 5, thereby positioning the bottom end of the chord 5 at its current position. Multiple rods 32 are evenly distributed along the length of the bridge, corresponding to the positions of the chord 5. This achieves an overall uniform positioning effect on the bottom end of the chord 5 along the length of the bridge. Furthermore, a protrusion is provided at the end of the rod 32, which provides an axial limit for the insertion of the rod 32 into the interior of the chord 5.

[0036] The specific working process of this embodiment is as follows:

[0037] When installing the prefabricated panel 4 to the top of the base frame 1, the prefabricated panel 4 is dragged so that the second clamping block 23 is clamped into the sliding cavity 21. The driving member 25 rotates to drive the bidirectional screw 26 to rotate. The bidirectional screw 26 rotates, and under the limit of the sliding cavity 21, the first clamping blocks 22 on both sides slide away from each other, thereby achieving the clamping fit between the first clamping block 22 and the second clamping block 23, thereby fixing the second clamping block 23, and further achieving the rapid fixation of the prefabricated panel 4 on the top of the base frame 1;

[0038] After fixing the tops of multiple chord rods 5, workers push the bottom of the chord rod 5 so that the bottom of the chord rod 5 moves into the slide 31 with the help of wheels, and slides the bottom of the chord rod to a preset position through the sliding cooperation between the wheels and the slide. This saves time and effort while reducing the possibility of removing the installed end for alignment during the installation and alignment of one end. By passing the insertion rod through the base frame and inserting it into the interior of the chord rod, loading and unloading are convenient and quick, further improving loading and unloading efficiency.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A steel truss bridge, comprising a base frame (1), characterized in that: A prefabricated plate (4) and a chord (5) are provided at the upper end of the base frame (1), a web (6) is provided between the chords (5), a pushing assembly (3) is provided between the base frame (1) and the chord (5), and a mounting assembly (2) is provided between the base frame (1) and the prefabricated plate (4).

2. The steel truss bridge according to claim 1, characterized in that: The mounting assembly (2) comprises a sliding cavity (21) opened inside the base frame (1); a first clamping block (22) is slidably connected inside the sliding cavity (21); second clamping blocks (23) are fixed on both sides of the bottom of the prefabricated panel (4); and the first clamping block (22) can slide relative to the second clamping block (23) and be plugged into and engaged with the second clamping block (23).

3. The steel truss bridge according to claim 2, characterized in that: A bidirectional screw (26) is rotatably connected inside the sliding cavity (21), and the bidirectional screw (26) is threadedly connected to the first clamping block (22).

4. The steel truss bridge according to claim 3, characterized in that: External threads in opposite directions are provided on both sides of the bidirectional screw (26).

5. The steel truss bridge according to claim 3, characterized in that: A rotating chamber (24) is provided inside the base frame (1), a driving member (25) is provided inside the rotating chamber (24), and the driving member (25) is fixedly connected to a bidirectional screw (26).

6. The steel truss bridge according to claim 5, characterized in that: Front operating holes (27) are respectively provided on both sides of the rotating chamber (24), and a rear operating hole (28) is provided at the right end of the base frame (1).

7. The steel truss bridge according to claim 1, characterized in that: The pushing assembly (3) includes slideways (31) opened on both sides of the top of the base frame (1), and wheels are installed at the bottom of the chord (5). The wheels are located inside the slideways (31) and can slide relative to the slide (31).

8. The steel truss bridge according to claim 7, characterized in that: An insertion rod (32) is slidably inserted into one side of the base frame (1), and the insertion rod (32) passes through the base frame (1) and is inserted into the interior of the chord rod (5).

9. The steel truss bridge according to claim 8, characterized in that: A plurality of the insertion rods (32) are evenly arranged at positions corresponding to the chord rods (5) along the length direction of the bridge body.

10. The steel truss bridge according to claim 8, characterized in that: The end of the insertion rod (32) is provided with a protrusion.

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