Steel structure for steel bridge

Abstract

The utility model belongs to the technical field of steel structures, and particularly relates to a steel structure for a steel bridge, which comprises two rows of first vertical frames and two rows of second vertical frames which are vertically intersected and connected, and a bridge frame is connected above the second vertical frames through a roller group; the bridge frame can transversely move between the two rows of first vertical frames, and a dragging mechanism is arranged between the bridge frame and the first vertical frames; the front end and the rear end of the bridge frame are each connected with a slope frame through a hinge shaft. According to the steel structure for the steel bridge, flexible stepless transverse translation of the bridge frame is achieved through cooperation of the idler wheel sets and the dragging mechanism, the position of the bridge frame can be rapidly adjusted according to actual requirements, and the steel structure is suitable for various use scenes; the modular design is adopted, assembling is convenient, and the engineering period is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure technology, and specifically relates to a steel structure for steel bridges. Background Technology

[0002] Steel bridges are widely used in modern bridge construction due to their high strength, light weight, and fast construction speed. Traditional steel bridges are typically erected using a fixed structure, meaning the bridge's position cannot be adjusted, making them unsuitable for temporary passage, route changes, or frequent relocation. Existing movable bridges often rely on overall hoisting or complex drive mechanisms, which suffer from cumbersome operation, high costs, and insufficient stability. Furthermore, without effective transition structures when dealing with complex terrain and vehicle access, steel bridges can lead to poor safety and comfort for travelers. Summary of the Invention

[0003] The purpose of this invention is to provide a steel bridge structure that is flexible and highly stable. Through innovative roller assembly and towing mechanism design, a movable bridge frame is achieved, which is suitable for scenarios that require lateral movement of the bridge frame, such as temporary passageways.

[0004] To achieve the above-mentioned technical objectives, the solution adopted by this utility model is as follows:

[0005] A steel structure for a steel bridge includes a first and a second upright that are perpendicularly connected, both of which are in two parallel rows, and a bridge frame is connected above the second upright by a roller assembly;

[0006] The cable tray is capable of lateral translation between two rows of first uprights, and a dragging mechanism is provided between the cable tray and the first uprights;

[0007] The front and rear ends of the cable tray are each connected to a ramp frame via a hinge shaft.

[0008] Furthermore, the roller assembly includes a horizontal pressure plate and a side vertical plate connected vertically, and also includes a longitudinal roller and a transverse roller perpendicular to the central axis. The longitudinal roller is disposed below the horizontal pressure plate, and the transverse roller is disposed outside the side vertical plate. The outer circular surface of the longitudinal roller abuts against the upper surface of the second upright, and the outer circular surface of the transverse roller abuts against the side of the second upright.

[0009] Furthermore, the towing mechanism includes two vertically placed rollers disposed on the left and right sides of the first upright, the rollers being connected to a transmission belt, the two ends of the transmission belt being connected to the left and right sides of the bridge frame respectively.

[0010] Furthermore, each end of the cable tray is connected to an I-beam at its bottom, with both ends of the I-beam protruding from both sides of the cable tray and fixed to the horizontal pressure plate.

[0011] Furthermore, the ramp frame can be flipped up and down based on the hinge axis.

[0012] Furthermore, both the cable tray and the ramp are provided with several grids that extend through the upper and lower surfaces.

[0013] Furthermore, the roller assembly consists of four rollers arranged at the four corners of a rectangle.

[0014] Furthermore, the cable tray is provided with upright guardrails on the left and right sides. The guardrails include horizontal bars and vertical bars connected in an "L" shape. The horizontal bars are movably inserted into the sleeves connected to the bottom surface of the cable tray, and the top of the vertical bars is connected to a horizontal connecting bar.

[0015] Furthermore, both the first and second uprights are assembled from steel pipes or steel beams, and both are provided with several longitudinal diagonal steel pipes or diagonal steel beams. The front and rear ends of the first upright are connected to mounting plates.

[0016] Furthermore, the upper open end of the transmission belt is connected to the tie rods on both sides of the bridge at the same height.

[0017] The main beneficial effects of adopting the above technical solution are as follows:

[0018] This utility model provides a steel structure for steel bridges that achieves flexible and stepless lateral translation of the bridge frame through the cooperation of roller sets and towing mechanisms. It can quickly adjust the position of the bridge frame according to actual needs and adapt to various usage scenarios. The modular design facilitates assembly and shortens the project cycle. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 4 This is a side view of the structure of this utility model;

[0023] Figure 5 This is a bottom view of the structure of this utility model;

[0024] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0025] In the diagram: 1. First upright; 1a. Mounting plate; 2. Second upright; 3. Cable tray; 3a. I-beam; 3b. Tie rod; 4. Roller assembly; 4a. Longitudinal roller; 4b. Transverse roller; 4c. Horizontal pressure plate; 4d. Side vertical plate; 5. Towing mechanism; 5a. Rotary wheel; 5b. Drive belt; 6. Inclined frame; 7. Guardrail; 7a. Horizontal bar; 7b. Longitudinal bar; 7c. Bar sleeve; 7d. Horizontal connecting rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "longitudinal", "lateral", "top", "bottom", "left", "right", etc., used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] Please refer to the following: Figures 1-6 A steel structure for steel bridges includes a first upright 1 and a second upright 2 that are perpendicularly connected. Both are two parallel columns that form a stable support frame. A bridge frame 3 is connected above the second upright 2 by a roller assembly 4.

[0028] Specifically, the cable tray 3 can be moved laterally between the two rows of first uprights 1, and a dragging mechanism 5 is provided between the cable tray 3 and the first uprights 1;

[0029] The front and rear ends of the bridge frame 3 are each connected to a ramp frame 6 via a hinge shaft. The ramp frame 6 can be flipped up and down based on the hinge shaft. When vehicles need to go up or down the bridge, the ramp 6 is flipped down to form a transition ramp, which facilitates the connection with road surfaces of different heights. This makes it easy for vehicles to drive smoothly onto or off the bridge frame. When the ramp frame 6 is not needed, it can be flipped up and folded away to save space.

[0030] In this embodiment, the roller assembly 4 includes a horizontal pressure plate 4c and a side vertical plate 4d connected vertically, and also includes a longitudinal roller 4a and a transverse roller 4b perpendicular to the central axis. The longitudinal roller 4a is disposed below the horizontal pressure plate 4c, and the transverse roller 4b is disposed outside the side vertical plate 4d. The outer circular surface of the longitudinal roller 4a abuts against the upper surface of the second upright 2, and the outer circular surface of the transverse roller 4b abuts against the side of the second upright 2. With this design, the roller assembly 4 can simultaneously bear vertical loads and lateral forces, not only supporting the weight of the cable tray 3, but also effectively limiting the direction of movement of the cable tray 3 when it moves laterally, improving the stability of the cable tray 3 during movement and reducing swaying. At the same time, the roller assembly 4 consists of four rollers arranged at the four corners of a rectangle, further improving stability.

[0031] Among them, each end of the cable tray 3 is connected to an I-beam 3a at its bottom. The two ends of the I-beam 3a are exposed on both sides of the cable tray 3 and fixed to the horizontal pressure plate 4c.

[0032] A further optimized design includes a towing mechanism 5 comprising two vertically placed rollers 5a positioned on the left and right sides of the first support frame 1. Each roller 5a is connected to a transmission belt 5b, the open ends of which are connected to the left and right sides of the cable tray 3, respectively. Specifically, the upper open ends of the transmission belt 5b are connected at the same height to the tie rods 3b located on the left and right sides of the cable tray 3. By driving the rollers 5a, the transmission belt 5b is moved, thereby achieving lateral translation of the cable tray 3.

[0033] In addition, both the cable tray 3 and the ramp frame 6 are provided with several through-holes on the upper and lower surfaces. Modular panels are laid on the through-holes. This design can effectively drain water from the cable tray 3 and the ramp frame 6, prevent water from corroding the steel structure, and extend the service life of the steel structure.

[0034] Meanwhile, the cable tray 3 is provided with upright guardrails 7 on both sides. The guardrails 7 include horizontal bars 7a and vertical bars 7b connected in an "L" shape. The horizontal bars 7a are movably inserted into the sleeves 7c connected to the bottom of the cable tray 3, so that the guardrails 7 are detachable, which is convenient for transportation and installation, and also makes it easy to adjust the width of the passage between the guardrails 7 according to actual needs. A horizontal connecting bar 7d is connected to the top of the vertical bar 7b.

[0035] In this technical solution, both the first upright 1 and the second upright 2 are assembled from steel pipes or steel beams. Both are provided with several longitudinal diagonal steel pipes or diagonal steel beams. The front and rear ends of the first upright 1 are connected to mounting plates 1a. The mounting plates facilitate the connection and fixation of the first upright to other structures, such as between two banks.

[0036] In practical applications, this invention is used in temporary river-crossing passage projects, employing its steel structure. When the bridge frame 3 needs to be moved, the drive wheel 5a drives the transmission belt 5b. The transmission belt 5b pulls the bridge frame 3 via the tie rod 3b, causing the roller assembly 4 to roll on the second upright 2, achieving lateral translation of the bridge frame 3. The towing mechanism 5 then moves the bridge frame 3 laterally to the designated position. The ramp frame 6 can be tilted up and down as needed to adapt to different connection heights, connecting with the road surfaces on both banks to form a temporary passage. The grid design of the bridge frame 3 and the ramp frame 6 effectively drains water, preventing water accumulation from affecting traffic safety; the modular design effectively shortens the project cycle.

[0037] The steel structure proposed in this solution can be widely used in temporary bridges, adjustable span highway or railway bridges, construction access roads, and other fields, and has good market prospects and promotional value.

[0038] It should be noted that in the present invention, the terms "connected" and "fixed" should be interpreted broadly. For example, "connected" without specific definition can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through some intermediate medium; for those skilled in the art, corresponding adjustments and changes can be made according to the specific application situation.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A steel structure for steel bridges, characterized in that: It includes a first upright (1) and a second upright (2) that are perpendicularly connected. Both are two parallel columns. A cable tray (3) is connected above the second upright (2) by a roller assembly (4). The cable tray (3) is capable of lateral translation between the two rows of first uprights (1), and a dragging mechanism (5) is provided between the cable tray (3) and the first uprights (1); The front and rear ends of the bridge frame (3) are each connected to a ramp frame (6) via a hinge shaft.

2. A steel structure for a steel bridge according to claim 1, characterized in that: The roller assembly (4) includes a horizontal pressure plate (4c) and a side vertical plate (4d) connected vertically, and also includes a longitudinal roller (4a) and a transverse roller (4b) perpendicular to the central axis. The longitudinal roller (4a) is located below the horizontal pressure plate (4c), and the transverse roller (4b) is located outside the side vertical plate (4d). The outer circular surface of the longitudinal roller (4a) abuts against the upper surface of the second upright (2), and the outer circular surface of the transverse roller (4b) abuts against the side of the second upright (2).

3. A steel structure for a steel bridge according to claim 1, characterized in that: The towing mechanism (5) includes two vertically placed rollers (5a) on the left and right sides of the first upright (1). The rollers (5a) are connected to a transmission belt (5b), and the two ends of the opening of the transmission belt (5b) are respectively connected to the left and right sides of the bridge frame (3).

4. A steel structure for a steel bridge according to claim 2, characterized in that: The bottom of each end of the cable tray (3) is connected to an I-beam (3a), and the two ends of the I-beam (3a) protrude from both sides of the cable tray (3) and are fixed to the horizontal pressure plate (4c).

5. A steel structure for a steel bridge according to claim 1, characterized in that: The ramp frame (6) can be flipped up and down based on the hinge axis.

6. A steel structure for a steel bridge according to claim 1, characterized in that: Both the cable tray (3) and the ramp (6) are provided with several grids that run through the upper and lower surfaces.

7. A steel structure for a steel bridge according to claim 2, characterized in that: The roller group (4) consists of four rollers arranged at the four corners of a rectangle.

8. A steel structure for a steel bridge according to claim 6, characterized in that: The cable tray (3) is provided with guardrails (7) that stand upright on the left and right sides. The guardrails (7) include horizontal bars (7a) and vertical bars (7b) connected in an "L" shape. The horizontal bars (7a) are movably inserted into the sleeves (7c) connected to the bottom surface of the cable tray (3). The top of the vertical bars (7b) is connected to a horizontal connecting bar (7d).

9. A steel structure for a steel bridge according to claim 3, characterized in that: The first upright (1) and the second upright (2) are both assembled from steel pipes or steel beams. Both are provided with several longitudinal diagonal steel pipes or diagonal steel beams. The front and rear ends of the first upright (1) are connected to mounting plates (1a).

10. A steel structure for a steel bridge according to claim 3, characterized in that: The upper open end of the transmission belt (5b) is connected to the tie rods (3b) on the left and right sides of the bridge frame (3) at the same height.

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