Temporary support and swivel device for construction of a railway swivel bridge

Abstract

The utility model discloses a kind of temporary support and swivel device for across railway swivel bridge construction, including bridge swivel and support assembly, the bridge swivel and support assembly include bottom pile, lower turntable, annular slide rail, upper turntable and sand box;Support assembly, the support assembly includes fixed frame, second support plate, jack, U-shaped fixing frame and gyro wheel, the fixed frame is placed on annular slide rail, second support plate is fixed on fixed frame, jack is placed in fixed frame, and located between two second support plates, U-shaped fixing frame is fixed on the upper side of jack movable end, gyro wheel is rotatably connected in the inner side of U-shaped fixing frame.The utility model is set to support assembly, greatly shorten sand box to take out time consumption, improve construction efficiency, staff need not help large-scale handling equipment, only need smaller pulling force to promote sand box to move, avoid the collision damage with swivel device in sand box handling process simultaneously, reduce construction risk and manpower cost.

Description

Technical Field

[0001] This utility model relates to the field of bridge rotation construction technology, specifically a temporary support and rotation device for the construction of a railway-crossing rotating bridge. Background Technology

[0002] In bridge construction across railways, the swing bridge construction technology has become a core solution for overpass projects because it avoids direct interference with railway operations. This involves casting or assembling the bridge beam (often integrated with piers and towers) in a safe area parallel to the railway, then rotating it around a pre-set center to achieve the core objectives of "parallel prefabrication, aerial rotation, and precise positioning." In this process, the synergistic performance of the temporary supports and the swing device directly determines construction efficiency, safety, and positioning accuracy: the temporary supports must bear the load and ensure the stability of the bridge beam during construction, while the swing device must provide a stable rotation center, precise guidance, and traction force. The compatibility between the two is a key technical challenge. Currently, the industry commonly uses sandboxes as the core component of the temporary supports, placing them between the annular slide rail and the upper turntable of the swing device. The supporting force of the sand filling inside the sandbox balances the load on the upper turntable, preventing swaying during construction and protecting the transmission structure below the upper turntable from impact damage.

[0003] The process of removing the sand box is cumbersome and time-consuming. After the bridge construction is completed, the sand box's discharge port must be opened to allow the sand inside to flow out slowly. The sand box can only be removed after its supporting force has been released to a safe range. This process can take several hours or even longer, causing delays in the connection of key procedures in the rotation construction and extending the safety control window for railway operations. Furthermore, the sand box is difficult to handle. Its heavy weight means that even after some sand is discharged, manual or conventional equipment handling still requires significant manpower and resources. The limited operating space in the circular sliding rail area also increases the risk of collision damage to the rotation device. Therefore, a temporary support and rotation device for the construction of railway-crossing rotating bridges is needed to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a temporary support and rotation device for the construction of a railway crossing swing bridge, so as to solve the problems mentioned in the background art. To solve the above technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a temporary support and rotation device for the construction of a railway crossing swing bridge, comprising:

[0006] A bridge rotation and support assembly, comprising a bottom pile, a lower turntable, an annular slide rail, an upper turntable, and a sand box. The lower section of the lower turntable is fixed to the upper end of the bottom pile, and the upper end is rotatably connected above the lower section. The annular slide rail is fixed to the upper end of the bottom pile and located outside the lower turntable. The upper turntable is fixed above the rotating end of the lower turntable, and the sand box is placed between the annular slide rail and the upper turntable.

[0007] The support assembly includes a fixed frame, a second support plate, a jack, a U-shaped fixing frame, and rollers. The fixed frame is placed on an annular slide rail, the second support plate is fixed on the fixed frame, the jack is placed inside the fixed frame and located between the two second support plates, the U-shaped fixing frame is fixed above the movable end of the jack, and the rollers are rotatably connected to the inside of the U-shaped fixing frame.

[0008] Furthermore, the support assembly also includes a first support plate, which is welded to the inside of the fixed frame and located below the second support plate.

[0009] Furthermore, the support assembly also includes a groove, which is formed on one side of the fixing frame and located between the two second support plates.

[0010] Furthermore, the lower end of the first support plate is flush with the lower end of the fixed frame, and one end of the connecting air pipe of the jack is placed in the groove.

[0011] Furthermore, the lower end of the upper turntable is uniformly fixed with support tubes, and the sand boxes are evenly distributed between the two support tubes and placed on the fixed frame.

[0012] Furthermore, it also includes a damage prevention component, which includes a protective cover and a pull ring. The protective cover is snapped into a groove, and the pull ring is fixed to the upper end of the protective cover.

[0013] Furthermore, the protective cover is open at one end and closed at the other end, and the jack is locked inside the protective cover.

[0014] This utility model has the following beneficial effects:

[0015] This invention, through its specially designed support components, allows for efficient sand box installation. The fixed frame is placed on a circular slide rail, and jacks are positioned between two first support plates. Connecting air pipes are placed in the groove. After bridge construction is completed, the sand box's discharge port is opened. Once a certain amount of sand is discharged, the upper support pile of the sand box falls. An external air pump is then used to connect the connecting air pipes of the three jacks in the groove, causing the jack's movable rod to lift, raising the U-shaped fixed frame and moving the upper end of the rollers out of the fixed frame. The sand box is then pulled, causing the rollers to rotate and allowing the sand box to be removed. The support components can then be retrieved. This design significantly reduces the time required to remove the sand box, improves construction efficiency, and eliminates the need for large handling equipment. Only a small pulling force is required to move the sand box, while also preventing collision damage between the sand box and the rotating device during transport, thus reducing construction risks and labor costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the position of the support component of this utility model;

[0019] Figure 3 This is a first-view structural diagram of the support component of this utility model;

[0020] Figure 4 This is a schematic diagram of the second-view structure of the support component of this utility model;

[0021] Figure 5 This is a schematic diagram of the fixed frame structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the damage prevention component of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 10. Bottom pile; 11. Lower turntable; 12. Circular slide rail; 13. Upper turntable; 14. Sand box; 20. Fixing frame; 21. First support plate; 22. Second support plate; 23. Jack; 24. U-shaped fixing frame; 25. Roller; 26. Groove; 30. Protective cover; 31. Pull ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please see Figures 1-5 As shown, this utility model is a temporary support and rotation device for the construction of a railway crossing swing bridge, comprising:

[0028] The bridge rotation and support assembly includes a bottom pile 10, a lower turntable 11, an annular slide rail 12, an upper turntable 13, and a sand box 14. The lower section of the lower turntable 11 is fixed to the upper end of the bottom pile 10, and the upper end is rotatably connected to the upper section above the lower section. The annular slide rail 12 is fixed to the upper end of the bottom pile 10 and is located outside the lower turntable 11. The upper turntable 13 is fixed above the rotating end of the lower turntable 11. The sand box 14 is placed between the annular slide rail 12 and the upper turntable 13.

[0029] Support tubes are evenly fixed at the lower end of the upper turntable 13, and sand boxes 14 are evenly distributed between the two support tubes and placed on the fixed frame 20.

[0030] The bottom pile 10 provides support, the lower turntable 11 facilitates the rotation of the upper turntable 13, the annular slide rail 12 provides support, facilitates the movement of the support pipe fixed below the upper turntable 13, the upper turntable 13 provides support and is used to fix the bridge, and the sand box 14 provides temporary support.

[0031] The support assembly includes a fixed frame 20, a second support plate 22, a jack 23, a U-shaped fixing frame 24, and rollers 25. The fixed frame 20 is placed on the annular slide rail 12, the second support plate 22 is fixed on the fixed frame 20, the jack 23 is placed inside the fixed frame 20 and located between the two second support plates 22, the U-shaped fixing frame 24 is fixed above the movable end of the jack 23, and the rollers 25 are rotatably connected to the inside of the U-shaped fixing frame 24.

[0032] The support assembly also includes a first support plate 21, which is welded to the inside of the fixed frame 20 and located below the second support plate 22.

[0033] The support assembly also includes a groove 26, which is formed on one side of the fixing frame 20 and located between the two second support plates 22;

[0034] The lower end of the first support plate 21 is flush with the lower end of the fixed frame 20, and one end of the connecting air pipe of the jack 23 is placed in the groove 26.

[0035] The fixed frame 20, the first support plate 21 and the second support plate 22 provide support, and the jack 23 provides a power source for moving the U-shaped fixed frame 24 and the rollers 25. The U-shaped fixed frame 24 provides support, and the rollers 25 facilitate the movement of the sand box 14.

[0036] Working principle:

[0037] When installing the sand box 14, place the fixing frame 20 on the annular slide rail 12, place the jack 23 between the two first support plates 21, and place the connecting air pipe in the groove 26. After the bridge construction is completed, open the sand discharge port of the sand box 14. After a certain amount of sand is discharged, the upper support pile of the sand box 14 falls. Use an external air pump to connect the connecting air pipes of the three jacks 23 in the groove 26 in sequence, so that the movable rod of the jack 23 is lifted, driving the U-shaped fixing frame 24 to rise, so that the upper end of the roller 25 moves out of the fixing frame 20. Then pull the sand box 14 to drive the roller 25 to rotate. After the sand box 14 is taken out, the support components can be retrieved.

[0038] This step significantly reduces the time required to remove the sand box 14, improves construction efficiency, and eliminates the need for large handling equipment. Only a small pulling force is required to move the sand box 14, while avoiding collision damage between the sand box 14 and the rotating device during handling, thus reducing construction risks and labor costs.

[0039] Please see Figure 6 As shown, this embodiment, based on the above embodiment, further includes:

[0040] The damage prevention component includes a protective cover 30 and a pull ring 31. The protective cover 30 is snapped into the groove 26, and the pull ring 31 is fixed to the upper end of the protective cover 30.

[0041] The protective cover 30 is open at one end and closed at the other end, and the jack 23 is locked inside the protective cover 30;

[0042] The protective cover 30 provides protection, and the pull ring 31 facilitates the movement of the protective cover 30.

[0043] Working principle:

[0044] After installing the fixed frame 20, place the connecting air pipe of the jack 23 into the groove 26, hold the pull ring 31, cover the protective cover 30 into the groove 26, so that the connecting air pipe is inside the protective cover 30. Before taking out the sand box 14, pull the pull ring 31 to expose the air pipe of the jack 23, connect the external air pump, lift the roller 25, and then take out the sand box 14.

[0045] This step effectively prevents dust, rainwater, sand, and other debris from entering the construction environment, thus preventing damage such as wear, corrosion, and blockage of the air pipes.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A temporary support and rotation device for the construction of a railway-crossing swing bridge, characterized in that, include: The bridge rotation and support assembly includes a bottom pile (10), a lower turntable (11), an annular slide rail (12), an upper turntable (13), and a sand box (14). The lower section of the lower turntable (11) is fixed to the upper end of the bottom pile (10), and the upper end is rotatably connected above the lower section. The annular slide rail (12) is fixed to the upper end of the bottom pile (10) and located outside the lower turntable (11). The upper turntable (13) is fixed above the rotating end of the lower turntable (11). The sand box (14) is placed between the annular slide rail (12) and the upper turntable (13). The support assembly includes a fixed frame (20), a second support plate (22), a jack (23), a U-shaped fixing frame (24), and rollers (25). The fixed frame (20) is placed on the annular slide rail (12), the second support plate (22) is fixed on the fixed frame (20), the jack (23) is placed inside the fixed frame (20) and located between the two second support plates (22), the U-shaped fixing frame (24) is fixed above the movable end of the jack (23), and the rollers (25) are rotatably connected to the inside of the U-shaped fixing frame (24).

2. The temporary support and rotation device for construction of a railway-crossing swing bridge according to claim 1, characterized in that: The support assembly also includes a first support plate (21), which is welded to the inside of the fixed frame (20) and located below the second support plate (22).

3. A temporary support and rotation device for construction of a railway-crossing swing bridge according to claim 1, characterized in that: The support assembly also includes a groove (26) which is formed on one side of the fixed frame (20) and located between two second support plates (22).

4. A temporary support and rotation device for construction of a railway-crossing swing bridge according to claim 2, characterized in that: The lower end of the first support plate (21) is flush with the lower end of the fixed frame (20), and one end of the connecting air pipe of the jack (23) is placed in the groove (26).

5. A temporary support and rotation device for construction of a railway-crossing swing bridge according to claim 1, characterized in that: The upper turntable (13) has support tubes evenly fixed at its lower end, and the sand box (14) is evenly distributed between the two support tubes and placed on the fixed frame (20).

6. A temporary support and rotation device for construction of a railway-crossing swing bridge according to claim 1, characterized in that: It also includes a damage prevention component, which includes a protective cover (30) and a pull ring (31). The protective cover (30) is snapped into a groove (26), and the pull ring (31) is fixed to the upper end of the protective cover (30).

7. A temporary support and rotation device for construction of a railway-crossing swing bridge according to claim 6, characterized in that: The protective cover (30) is open at one end and closed at the other end, and the jack (23) is locked inside the protective cover (30).

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