Anti-overturning and temporary fixation device for rotation system

Abstract

The utility model discloses a kind of temporary consolidation devices of flat rotation method anti-overturning and rotating body system, belong to engineering construction technical field, including the limiting mechanism for rotating body anti-overturning, set to four groups, respectively located in the four edges side of lower deck, and single group of limiting mechanism is composed of lower embedded part, connecting bolt, lower connecting piece, adjusting screw, adjusting nut, stop lever, lower embedded part is set to two, separately in the slide way both sides where strutting foot is, and with lower deck together with pouring;Single lower embedded part is detachably connected with lower connecting piece by connecting bolt, and lower connecting piece is provided with adjusting screw for disassembling and connecting stop lever;Stop lever is bridged between two lower connecting pieces, and is connected between adjusting screw by adjusting nut. The device not only can prevent rotating body overrunning, but also can temporarily anchor upper deck and lower deck after rotating body rotation in place, to realize rotating body system temporary consolidation connection.

Description

Technical Field

[0001] This utility model belongs to the field of engineering construction technology. When applied to the construction of railway crossings using the horizontal rotation method, it specifically relates to a device for preventing over-rotation and a temporary consolidation device for the rotation system in the horizontal rotation method. Background Technology

[0002] With the advancement of technology in recent years, construction techniques in the building industry have also been continuously improving. The bridge rotation method, as a typical example, has developed rapidly and is widely used in highway and railway overpass engineering. Currently, with the booming development of transportation, the construction of new bridges crossing existing lines is inevitable, especially crossing important routes such as conventional and high-speed railways. Traditional scaffolding or cantilever construction has a long operation cycle within the maintenance window, requires a large number of maintenance windows, causes significant interference with railway operations, and incurs high transportation costs. Bridge rotation construction can minimize these problems. Therefore, the bridge rotation method will play a unique advantage in numerous grade-separated traffic grid layouts and will undoubtedly play a crucial role in bridge construction. For railway crossing construction, this work falls under the Class II construction category for operating lines. The application process for maintenance windows is cumbersome, usually limited to within 2 hours (generally carried out at night when there are fewer vehicles), and construction is strictly prohibited without a construction plan. To save time during track maintenance windows, only the bridge rotation is usually carried out during these windows, with the beam posture adjustment scheduled for the following day. Therefore, how to avoid over-rotation of the bridge structure and the risk of Class II construction delays caused by slow temporary consolidation of the upper and lower abutments before beam posture adjustment during the rotation process has become a key focus of the construction work.

[0003] Compared to previous projects that used I-beams for limiting rotation and manual welding of temporary reinforcement bars for the rotating system, the limiting and consolidation effects were poor, the construction period was long, and situations such as I-beam failure leading to over-rotation and substandard quality of manual welding of upper and lower bearing platform reinforcement bars causing delay risks were common, greatly increasing the difficulty and operational risks of construction across railways. Therefore, to address the construction challenges of preventing over-rotation in the horizontal rotation method and controlling the temporary consolidation of the rotating system, this utility model adopts a horizontal rotation method anti-over-rotation and temporary consolidation device for the rotating system. This device not only prevents the rotating structure from over-rotating during the rotation construction process, improving the safety, reliability, and precision control of the rotation construction process, but also quickly achieves temporary consolidation of the rotating system after the beam posture of the rotating structure is adjusted. While saving labor and effort, it effectively avoids the delay risks of Class II construction and ensures the safety of train operation on existing lines. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a device for preventing over-rotation of the rotating structure and a temporary consolidation device for the rotating system. When facing problems such as high difficulty in railway construction, high safety requirements, short working time within the time window, and tight construction schedule, the use of this device can prevent the rotating structure from over-rotating during the rotating construction process, and can also realize the temporary consolidation of the rotating system after the rotating structure is in place and the beam posture is adjusted.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a temporary consolidation device for preventing over-rotation and rotating systems during horizontal rotation. It includes four sets of limiting mechanisms for preventing over-rotation, located on the four sides of the lower support platform. Each set of limiting mechanisms consists of a lower embedded part, connecting bolts, a lower connecting part, an adjusting screw, an adjusting nut, and a stop bar. Two lower embedded parts are provided, located on either side of the slide rail where the support legs are located, and are cast together with the lower support platform. Each lower embedded part is detachably connected to a lower connecting part via connecting bolts, and the lower connecting part is equipped with an adjusting screw for detachably connecting the stop bar. The stop bar bridges between the two lower connecting parts and is connected to the adjusting screw via an adjusting nut. In this way, the device effectively prevents over-rotation of the structure during rotation through the limiting mechanism, reducing construction risks. The cooperation of the adjusting screw and adjusting nut allows for precise control of the stop bar's position, enhancing the overall installation flexibility. The design of the connecting bolts makes the installation and disassembly of the lower embedded parts and lower connecting parts in the limiting mechanism more convenient, adapting to the needs of rapid construction.

[0007] Optionally, each lower connector may be provided with at least two adjusting screws spaced vertically and / or laterally. This allows for more secure control of the height and relative position of the stop lever by providing multiple adjusting screws and their adjusting nuts, such as two sets, thus offering more reliable over-rotation protection.

[0008] Optionally, the stop bar is designed as a groove, with open slots on both sides for engaging the adjusting screw, and the adjusting nut is larger than the width of the open slot. This open slot design provides a convenient engaging function for the stop bar, making installation and disassembly operations simpler and faster.

[0009] Optionally, a rubber pad is provided inside the open groove of the stop lever to protect the adjusting screw, and the rubber pad is configured with a U-shaped structure that fits the inner cavity of the open groove. The main function of the rubber pad is to provide an extra layer of protection for the adjusting screw, preventing it from being affected by wear or other external forces during operation.

[0010] Optionally, the system also includes upper embedded parts, vertical rods, and diagonal braces. The number of upper embedded parts corresponds one-to-one with the number of lower connecting parts, and they are cast together with the upper foundation. The upper embedded parts and lower connecting parts are detachably connected via vertical rods and diagonal braces, forming a triangular support system. This triangular support system design effectively distributes the load applied to the structure, provides stronger support, and prevents structural instability caused by force changes during rotation. This allows the rotation system to maintain a stable state during construction, ensuring the safety of the structure.

[0011] Optionally, the upper embedded part has a connecting lug plate on the corresponding surface facing the lower connector for connecting the vertical rod and the diagonal brace; the lower connector consists of a base plate and a channel plate, wherein the base plate is connected to the lower embedded part, and the channel plate is connected to the vertical rod and the diagonal brace respectively through two connecting holes; an adjusting screw is provided on the channel plate. In this way, through the design of the connecting lug plate, a stable connection is formed between the upper embedded part and the vertical rod and the diagonal brace, improving the seismic resistance and load-bearing capacity of the entire system.

[0012] Optionally, the connection hole can be configured as a long, narrow hole. This elongated hole shape allows for greater flexibility during installation and adjustment, effectively accommodating various alignment issues that may arise during construction.

[0013] Optionally, the upper and lower embedded parts can be designed in a π-like shape. This π-like design better distributes the load, reduces the impact of concentrated pressure on a particular part, and improves the shear and tensile strength of the component. This is crucial in actual construction, especially under high-intensity loads during rotation.

[0014] The beneficial effects of this utility model are mainly reflected in the following aspects:

[0015] 1) Simple structure and clear stress distribution. The device adopts a reasonable component layout, such as upper embedded parts, lower connecting parts, stop bars, vertical bars, diagonal braces and their connection mechanisms, which simplifies the overall design and facilitates manufacturing and installation.

[0016] 2) Safety, reliability, and precision control. Through the design of the adjusting screw and open slot, this device can precisely control the relative position of the components, ensuring the accuracy of position adjustment during the rotation construction process and improving construction precision.

[0017] 3) Improved time efficiency. The device design simplifies the installation and adjustment process, enabling more efficient completion of rotation construction within limited skylights, shortening the time required for each operation, and thus improving work efficiency.

[0018] In summary, this utility model, through its unique design and structure, enables the anti-over-rotation device for the horizontal rotation method and the temporary consolidation device for the rotation system to demonstrate high efficiency, safety, and economy during construction, greatly promoting the smooth progress of railway construction and possessing excellent application prospects.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a front structural diagram illustrating the application of the anti-overrotation and temporary consolidation device of the rotation system of this utility model.

[0022] Figure 2 for Figure 1 A schematic diagram of the side structure;

[0023] Figure 3 This is a top view schematic diagram of the structure of the anti-overrotation and temporary consolidation device of the rotation system of this utility model;

[0024] Figure 4 for Figure 3 Front view;

[0025] Figure 5 for Figure 3 A side view;

[0026] Figure 6 for Figure 3 A schematic diagram of the stop bar and rubber pad structure in the middle;

[0027] Figure 7 A top view schematic diagram of the application of the utility model's anti-over-rotation and temporary consolidation device for the rotation system;

[0028] Attached reference numerals: 1-lower embedded part; 2-connecting bolt; 3-lower connector; 301-base plate; 302-slot plate; 303-connecting hole; 4-adjusting screw; 5-adjusting nut; 6-rubber pad; 7-stop bar; 701-open slot; 8-vertical rod; 9-diagonal brace; 10-upper embedded part; 101-connecting ear plate; 11-upper bearing platform; 12-lower bearing platform; 13-support leg; 14-slide rail; 15-turntable. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] like Figure 1-7 As shown, the anti-over-rotation and temporary consolidation device for the rotation system mentioned in this utility model includes four sets of limiting mechanisms, located on the four sides of the lower bearing platform 12, to prevent over-rotation during the rotation construction process. These limiting mechanisms are manufactured of high-strength shear-resistant steel to ensure good strength and stability during construction. The single-unit limiting mechanism consists of a lower embedded part 1, a connecting bolt 2, a lower connecting part 3, an adjusting screw 4, an adjusting nut 5, and a stop bar 7. Two lower embedded parts 1 are provided, located on either side of the slide rail 14 where the support leg 13 is located, and are poured together with the lower foundation 12. This means that the lower embedded parts 1 (requiring pre-embedded connecting bolts) are installed and positioned before the concrete pouring of the lower foundation 12 to ensure its stability. Each lower embedded part 1 is detachably connected to the lower connecting part 3 via the connecting bolt 2, ensuring convenient and quick adjustment or removal of the lower connecting part 3. The lower connecting part 3 is equipped with an adjusting screw 4 for detachable connection to the stop bar, allowing for flexible adjustment during construction to adapt to different construction procedures. The stop bar 7 bridges the two lower connecting parts 3 and is connected to the adjusting screw 4 via the adjusting nut 5, allowing for fine-tuning of the stop bar 7's position to ensure optimal limiting effect. The stop bar 7 serves as a practical limit, preventing over-rotation by blocking the support foot 13 below the turntable 15 in the rotating structure, thus ensuring the stability of the structure during the rotation construction process. By adopting the above scheme, this anti-over-rotation and temporary fixing device for the rotation system, combined with high-strength materials and flexible adjustment design, will effectively improve safety and efficiency during construction, becoming an important technical support for railway crossing construction.

[0031] In this embodiment, each lower connector 3 is provided with at least two adjusting screws 4 spaced vertically and / or laterally. This structural design aims to enhance the flexibility of adjustment, enabling precise adjustment for different construction environments and needs. In this example, each lower connector 3 contains two adjusting screws 4 arranged vertically, with two adjusting nuts 5 installed on each adjusting screw 4. These nuts are used to install the adjusting stop bar 7. This vertical arrangement provides more uniform support force and better control over the position of the stop bar 7, thereby effectively preventing over-rotation during the rotation process.

[0032] In this embodiment, the stop bar 7 is groove-shaped with prominent side wings, forming open grooves 701 on both sides for engaging with the adjusting screw 4. These open grooves 701 are designed to cooperate with the adjusting screw 4, ensuring a secure hold. Furthermore, the adjusting nut 5 is larger than the width of the open groove 701, ensuring that the adjusting nut 5 is fixed outside the open groove 701 when adjusting the position of the stop bar 7. This prevents the stop bar from accidentally falling off or moving during construction, improving overall safety.

[0033] In this embodiment, a rubber pad 6 is provided inside the open groove 701 of the stop rod 7 to protect the adjusting screw 4. The rubber pad 6 ensures a tight fit while protecting the external threads of the adjusting screw 4, preventing loosening due to vibration or improper operation. It also effectively extends the service life of the adjusting screw 4 and improves the overall system reliability. The rubber pad 6 adopts a U-shaped structure, which matches the inner shape of the open groove 701, ensuring that the rubber pad fits tightly within the groove and provides stable support for the adjusting screw. Furthermore, the U-shaped design helps to better absorb and disperse external impact forces, reducing the pressure directly transmitted to the adjusting screw.

[0034] In this embodiment, the system also includes upper embedded parts 10, vertical rods 8, and diagonal braces 9. The number of upper embedded parts 10 corresponds one-to-one with the number of lower connecting parts 3, ensuring that each lower connecting part 3 is connected to a corresponding upper embedded part 10 and is poured together synchronously with the upper bearing platform 11. Before the upper bearing platform 11 is poured with concrete, the upper embedded parts 10 are installed and positioned in advance to ensure their stable embedding. The upper embedded parts 10 and the lower connecting parts 3 are detachably connected by vertical rods 8 and diagonal braces 9, making it more convenient to adjust or remove them when needed, and forming a triangular support system. This fully utilizes the geometric characteristics of triangles, providing additional stability and load-bearing capacity, and ensuring the temporary and reliable consolidation of the rotation system.

[0035] In this embodiment, the upper embedded part 10 has a connecting ear plate 101 on the corresponding surface facing the lower connecting part 3 for connecting the vertical rod 8 and the diagonal brace 9; this facilitates a stable connection between the vertical rod 8 and the diagonal brace 9, ensuring an effective structural support between the upper embedded part 10 and the lower connecting part 3. The lower connecting part 3 consists of a base plate 301 and a channel plate 302. The base plate 301 is connected to the lower embedded part 1 and is responsible for transferring the load to the lower support 12, thereby ensuring stability and safety. The channel plate 302 is connected to the vertical rod 8 and the diagonal brace 9 respectively through two connecting holes 303, forming an effective structural fit. The adjusting screw 4 is set on the channel plate 302, providing support for the adjustment of the stop rod 7, allowing it to be flexibly adjusted during construction and ensuring a precise limiting effect.

[0036] In this embodiment, the connecting hole 303 is configured as a strip-shaped elongated hole. This strip-shaped elongated hole design allows the diameter of the connecting hole 303 to have a certain degree of extension in the horizontal direction, providing a larger adjustment range compared to a traditional round hole.

[0037] In this embodiment, the upper embedded part 10 and the lower embedded part 1 are configured in a π-like shape. That is, similar to the shape of the letter "π", this geometric structure can include two straight sections or one straight section and one curved section, effectively increasing the contact area. The π-like shape can provide good mechanical properties, making the force distribution more uniform, thereby improving the load-bearing capacity of the overall structure.

[0038] In use, the limiting mechanism is set in four sets. There are eight lower embedded parts 1 and eight lower connecting parts 3, which are located on both sides of the slide rail 14 with the four center lines of the support feet 13 on the side of the lower bearing 12. There are also eight upper embedded parts 10, which are set with the four center lines of the upper bearing 11. Before the concrete pouring of the lower bearing 12 and the upper bearing 11, the lower embedded parts 1 and the upper embedded parts 10 are installed and positioned in advance. Before the formal rotation, the lower connecting parts 3 are connected to the lower embedded parts 1 by the connecting bolts 2. Before the rotation is about to be in place, the stop rod 7 that limits the over-rotation is installed on the adjusting screw 4 in the pair of lower connecting parts 3 in each set. The position of the stop rod 7 is adjusted by the adjusting nut 5. After adjusting to the rotation design position, the front and rear adjusting nuts 5 are tightened to ensure that the stop rod 7 is firmly reinforced. When the support leg 13 under the turntable 15 touches the stop bar 7 during the rotation process, the rotation construction will stop. Steel wedge blocks will be used to fill the gap between the support leg 13 and the slide rail 14 to prevent the rotating structure from rotating. Then the stop bar 7 will be removed. The upper embedded part 10 and the lower connecting part 3 will be connected and fixed by the vertical rod 8 and the diagonal brace 9 to form a triangular support system, so as to realize the temporary and reliable fixation of the rotation system to restore railway operation. The bridge posture adjustment will be carried out in the railway construction plan during the daytime of the next day. Before the beam posture adjustment, the vertical rod 8 and the diagonal brace 9 in this temporary fixation device must be removed.

[0039] Taking a single horizontal rotation bridge structure as an example, compared to previous projects that required one 25-ton truck crane and four people to install the I-beam limiters and manually weld the temporary reinforcement bars for the rotation system, this device allows two workers to complete the anti-overrotation and temporary reinforcement system installation in just one hour before rotation. During the rotation process, the installation of the stop bars, vertical bars, and diagonal braces can be completed in just 10 minutes. The connections are reliable, and disassembly is convenient, effectively preventing damage to the main reinforcement bars caused by the failure of the I-beam limiters and the welding and removal of the temporary reinforcement bars. This simplifies the construction process, improves construction efficiency, and accelerates the construction progress. Furthermore, it eliminates the need for large machinery such as truck cranes, saving 0.5 shifts (25-ton truck cranes), reducing labor and equipment input, saving production costs, effectively controlling the working time within the designated maintenance window, avoiding and reducing the risk of Level II construction delays, and ensuring the safety of railway-related construction.

[0040] The technical aspect of this utility model lies in providing a modular, detachable, and adjustable device that integrates anti-over-rotation and temporary consolidation functions, specifically embodied in:

[0041] 1) Functional integration: The system integrates the two major functions of anti-over-rotation limit and temporary consolidation after rotation into the same system, solving the cumbersome problem of having to set up limit and weld consolidation structures separately in traditional construction.

[0042] 2) Structural adjustability and modularity: Through the design of adjusting screws, open slots, and long strip holes, the height is adjustable and it can be quickly assembled and disassembled to meet the needs of different construction stages.

[0043] 3) Triangular support system structure: The vertical rods and diagonal braces form a stable triangular support, which improves the reliability of temporary fixation and resistance to lateral forces.

[0044] 4) Standardized design of embedded parts and connectors: The π-shaped embedded part design enhances the bonding force with concrete and the load-bearing performance; while the channel-shaped connecting plate design helps to improve stability and facilitates the adjustment of the adjusting nut.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A temporary consolidation device for the anti-over-rotation and rotation system of the horizontal rotation method, characterized in that, The system includes a limiting mechanism for preventing over-rotation during rotation, which is set into four groups and located on the four sides of the lower support (12). Each group of limiting mechanisms consists of a lower embedded part (1), a connecting bolt (2), a lower connecting part (3), an adjusting screw (4), an adjusting nut (5), and a stop rod (7). The lower embedded part (1) is set into two parts, which are located on both sides of the slide (14) where the support foot (13) is located, and are cast together with the lower support (12). Each lower embedded part (1) is detachably connected to the lower connecting part (3) through the connecting bolt (2), and the lower connecting part (3) is provided with an adjusting screw (4) for detachably connecting the stop rod. The stop rod (7) is bridged between the two lower connecting parts (3) and is connected to the adjusting screw (4) through the adjusting nut (5).

2. The anti-over-rotation and temporary consolidation device for the rotation system according to claim 1, characterized in that, Each lower connector (3) is provided with at least two adjusting screws (4) spaced vertically and / or laterally.

3. The temporary fixation device for the over-rotation prevention and swivel system of the flat swivel method according to claim 1, characterized in that, The stop bar (7) is configured as a groove, with open grooves (701) on both sides for holding the adjusting screw (4), and the size of the adjusting nut (5) is greater than the width of the open groove (701).

4. The temporary consolidation device for anti-over-rotation and swivel system in the horizontal rotation method according to claim 3, characterized in that, The stop bar (7) has a rubber pad (6) in the open groove (701) to protect the adjusting screw (4), and the rubber pad (6) is configured as a U-shaped structure that is compatible with the inner cavity of the open groove (701).

5. The anti-over-rotation and temporary consolidation device for the rotation system according to any one of claims 1-4, characterized in that, It also includes upper embedded parts (10), vertical rods (8) and diagonal braces (9), wherein the number of upper embedded parts (10) corresponds one-to-one with the number of lower connecting parts (3), and they are cast together with the upper foundation (11); the upper embedded parts (10) and the lower connecting parts (3) are detachably connected by vertical rods (8) and diagonal braces (9) to form a triangular support system.

6. The anti-over-rotation and temporary consolidation device for the rotation system according to claim 5, characterized in that, The upper embedded part (10) has a connecting ear plate (101) on the corresponding surface facing the lower connector (3) for connecting the vertical rod (8) and the diagonal brace (9); the lower connector (3) is composed of a base plate (301) and a channel plate (302), wherein the base plate (301) is connected to the lower embedded part (1), and the channel plate (302) is connected to the vertical rod (8) and the diagonal brace (9) respectively through two connecting holes (303) opened on it; the adjusting screw (4) is set on the channel plate (302).

7. The anti-over-rotation and temporary consolidation device for the rotation system according to claim 6, characterized in that, The connecting hole (303) is configured as a long, narrow hole.

8. The anti-over-rotation and temporary consolidation device for the rotation system according to claim 5, characterized in that, The upper embedded part (10) and the lower embedded part (1) are configured as π-shaped.

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