Multi-point force-bearing type bridge swivel system capable of achieving real-time monitoring and self-adaptive adjustment

Abstract

The utility model relates to a multipoint bearing type bridge swivel system capable of real-time monitoring and self-adaptive adjustment, which comprises a spherical hinge, a plurality of bearing rotating devices and a traction system, the spherical hinge is used as a main support, the plurality of bearing rotating devices are used as bearing fulcrums capable of active bearing and automatic adjustment and a walking system, and the bearing rotating devices are distributed on the periphery of the spherical hinge. The traction system is used for driving the bridge swivel; the force-bearing rotating device comprises a self-adaptive force-bearing fulcrum, a safety fulcrum and a walking slide way, the safety fulcrum is used for auxiliary supporting, the walking slide way provides a motion track for the self-adaptive force-bearing fulcrum and the safety fulcrum, and a force-measuring sensor, a walking roller and a hydraulic device are arranged in the self-adaptive force-bearing fulcrum; the walking rollers enable the self-adaptive force bearing fulcrums to annularly rotate along the annular walking slideways, and the hydraulic devices are used for adjusting the supporting force of the self-adaptive force bearing fulcrums. According to the utility model, through the innovative design of a plurality of force-bearing rotating devices, the bearing capacity and the stability of the bridge swivel system are obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering, and in particular relates to a multi-point load-bearing bridge rotation system that can be monitored in real time and adaptively adjusted. Background Technology

[0002] With rapid economic and technological development, the number of bridge projects has increased dramatically, with an increasing number of bridges spanning rivers and existing railway lines. The demand for bridge rotation construction projects crossing high-grade highways or railways is constantly rising. In particular, large overpasses are increasingly evolving into super-large and super-heavy bridges. As the scale and complexity of bridge structures increase, higher demands are placed on rotation construction technology. For example, the Huizhou-Zhaoqing Expressway highway-railway overpass has a maximum rotation tonnage of 49,300 tons, and it is the first to break through the 200m single cantilever length and 350m rotation beam length records, both domestically and internationally. The rotation construction technology for these new bridge structures faces severe challenges; how to select a safe and reliable rotation structure system and design an efficient equipment system has become a key issue.

[0003] Currently, most large-tonnage rotating bridges at home and abroad adopt a single-point force-bearing ball joint rotating system, mainly relying on the central ball joint support and the peripheral safety support points for auxiliary support. However, the existing ball joint rotating system has obvious defects: (1) The main weight of the rotating bridge is borne by the ball joint, while the vertical reaction force provided by the safety support points is very small, resulting in excessive force concentration on the lower abutment; (2) When using the rigid displacement mutation method for rotating construction, a gap is required between the support point and the slide, which causes the bridge to rotate vertically during the rotation, affecting the safety of the tall structure bridge; (3) After the rotation is completed, the bridge posture needs to be adjusted, increasing the construction period and cost. Some domestic projects have optimized the rotating process by using a multi-point support system with gear and rack transmission. Although its anti-overturning stability has been significantly improved, the system still has the problem of passive force-bearing, and the precision requirements are high, maintenance is difficult and the cost is too high. Therefore, the traditional ball joint rotating system is difficult to meet the requirements of anti-overturning safety and posture maintenance under conditions such as ultra-large tonnage, long cantilever, large span and complex construction environment. Utility Model Content

[0004] To meet the technical requirements of asymmetric span rotation, curved bridges, and tall bridge structures, and to ensure the anti-overturning stability and smooth implementation of rotation under unbalanced loads such as sudden strong winds and bridge deck equipment falls, this utility model provides a multi-point bearing bridge rotation system that can be monitored in real time and adaptively adjusted to improve the safety, stability, and construction efficiency of rotation construction.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A multi-point load-bearing bridge rotation system with real-time monitoring and adaptive adjustment includes a ball joint, load-bearing rotation devices, and a traction system. The ball joint serves as the main support and is located at the center of the bridge rotation system. Multiple load-bearing rotation devices, acting as active load-bearing and automatically adjustable load-bearing supports and a traveling system, are distributed around the ball joint. The traction system drives the bridge rotation. Each load-bearing rotation device includes an adaptive load-bearing support, a safety support, and a traveling track. The safety support provides auxiliary support, and the traveling track provides a movement path for the adaptive load-bearing support and the safety support. The adaptive load-bearing support is internally equipped with a force sensor, traveling rollers, and a hydraulic device. The force sensor monitors the force state of the adaptive load-bearing support in real time. The traveling rollers cause the adaptive load-bearing support to rotate in a circular motion along the annular traveling track. The hydraulic device adjusts the support force of the adaptive load-bearing support.

[0007] Preferably, the load-bearing rotation device further includes a rubber pad and a pad plate, the hydraulic device is installed on the pad plate, and the rubber pad is installed between the top of the traveling roller and the pad plate, so as to evenly distribute the load of the traveling roller by the deformation of the rubber pad itself.

[0008] Preferably, the load-bearing rotation device further includes a lower support leg and an upper support leg, the force sensor is disposed at the bottom of the lower support leg, and the upper support leg is fixedly disposed on the upper turntable.

[0009] Preferably, a gap t1 is provided between the upper support foot and the lower support foot, and the gap t1 is greater than the gap t2 between the safety support point and the traveling slide, so that the safety support point and the adaptive load-bearing support point are not subjected to force at the same time when the bridge is dismantled.

[0010] Preferably, the walking roller has a conical structure.

[0011] Preferably, the hydraulic device is configured to automatically depressurize when the force on the adaptive bearing fulcrum exceeds the design value, and automatically pressurize when the force is lower than the design value, so as to keep the force on the adaptive bearing fulcrum within the design range.

[0012] Preferably, during rotation, the hydraulic device only bears pressure in the vertical direction and can only move up and down.

[0013] Preferably, the hydraulic device includes multiple jacks, which lift during rotation, causing the lower support leg to move upward and become fixed to the upper support leg.

[0014] Preferably, the force sensor is ultra-thin and has real-time pressure display and over-limit warning functions.

[0015] Preferably, there are 3-4 adaptive load-bearing supports and safety supports, each of which provides 1000-2000 tons of vertical support force, bearing 10%-20% of the total rotation tonnage of the bridge.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This invention relates to a multi-point load-bearing bridge rotation system with real-time monitoring and adaptive adjustment. By introducing a load-bearing rotation device including adaptive load-bearing supports, safety supports, and a traveling slide, the system's load-bearing capacity and stability are significantly improved. Each adaptive load-bearing support provides 1000 to 2000 tons of vertical support force, bearing 10-20% of the total bridge rotation tonnage. These supports are evenly distributed on the slide of a traditional central ball-joint rotation system, thereby significantly improving the stress distribution on the upper and lower turntables and meeting the requirements of complex bridge structures such as ultra-large tonnage, long cantilever, large span, and asymmetrical span rotation. Furthermore, the adaptive load-bearing supports can achieve real-time monitoring and automatic adjustment, precisely adjusting the bridge's posture before rotation and intelligently and automatically adjusting during the rotation process to ensure bridge posture stability. This allows the system to cope with unbalanced loads and unexpected situations, ensuring safe bridge rotation. The adaptive load-bearing supports rotate in a ring along the traveling slide using rolling friction, reducing frictional resistance and ensuring a smooth and stable rotation process. The safety fulcrum is designed to assist in safety. It is adjusted according to the tonnage of the rotating body, the size of the ball joint, the ease of construction, and the stress requirements of the rotating body, thereby further improving the stability and safety of the system. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the multi-point load-bearing rotating system of this embodiment;

[0019] Figure 2 This is a three-dimensional schematic diagram of the load-bearing rotation device of the multi-point load-bearing rotating system in this embodiment;

[0020] Figure 3 This is a schematic diagram of the adaptive load-bearing fulcrum structure of the load-bearing rotation device in this embodiment.

[0021] Explanation of reference numerals in the attached drawings: 1-ball joint, 2-force-bearing rotating device, 3-traction system, 2-1-adaptive force-bearing fulcrum, 2-2-safety fulcrum, 2-3-traveling slide, 2-1-1-force sensor, 2-1-2-traveling roller, 2-1-3-hydraulic device. Detailed Implementation

[0022] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model belong to the present utility model.

[0023] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0024] like Figure 1 As shown, this embodiment discloses a multi-point load-bearing bridge rotation system that can be monitored and adaptively adjusted in real time. It includes a ball joint 1, a load-bearing rotation device 2, and a traction system 3. The ball joint 1 serves as the main support and is located at the center of the bridge rotation system. Multiple load-bearing rotation devices 2 serve as active load-bearing and automatically adjustable load-bearing supports and a running system, distributed around the ball joint 1. The traction system 3 is used to drive the bridge rotation. In this embodiment, the ball joint 1 provides the main support at the center, the load-bearing rotation devices 2 arranged around the periphery realize active load-bearing and automatic adjustment, and the traction system 3 is responsible for driving the entire rotation process, thereby ensuring the coordinated operation of the overall structure. The load-bearing rotation device 2 includes an adaptive load-bearing fulcrum 2-1, a safety fulcrum 2-2, and a traveling slide 2-3. The safety fulcrum 2-2 is used for auxiliary support, and the traveling slide 2-3 provides a motion track for the adaptive load-bearing fulcrum 2-1 and the safety fulcrum 2-2. The adaptive load-bearing fulcrum 2-1 is the main load-bearing unit, the safety fulcrum 2-2 serves as a safety supplement, and the traveling slide 2-3 ensures the stability of the fulcrum's trajectory during movement. The adaptive load-bearing fulcrum 2-1 is equipped with a force sensor 2-1-1, a traveling roller 2-1-2, and a hydraulic device 2-1-3. The force sensor 2-1-1 is used to monitor the force state of the adaptive load-bearing fulcrum 2-1 in real time. The traveling roller 2-1-2 enables the adaptive load-bearing fulcrum 2-1 to rotate in a ring along the circular traveling slide 2-3. The hydraulic device 2-1-3 is used to adjust the supporting force of the adaptive load-bearing fulcrum 2-1. The force sensor 2-1-1 provides real-time feedback on the force, the traveling roller 2-1-2 ensures that the adaptive load-bearing fulcrum 2-1 rotates smoothly on the slide 2-3, and the hydraulic device 2-1-3 automatically adjusts the bearing capacity based on real-time data, thereby achieving precise control and safety assurance during the bridge rotation process.

[0025] Furthermore, the load-bearing rotation device 2 also includes a rubber pad and a pad plate. The hydraulic device 2-1-3 is installed on the pad plate, and the rubber pad is installed between the top of the traveling roller 2-1-2 and the pad plate. The rubber pad distributes the load of the traveling roller 2-1-2 evenly through its own deformation. The rubber pad effectively buffers the force changes of the traveling roller 2-1-2 on the traveling slide 2-3, avoids local stress concentration, ensures balanced force on each roller, and improves overall stability. The load-bearing rotation device 2 also includes a lower support foot and an upper support foot. The force sensor 2-1-1 is set at the bottom of the lower support foot, and the upper support foot is fixedly set on the upper turntable. The configuration of the lower and upper support feet enhances the stability of the overall structure and enables the force sensor 2-1-1 to accurately capture the load changes generated during the rotation. At the same time, the upper support foot on the upper turntable provides reliable support and stable force transmission for the entire rotation system. A gap t1 is provided between the upper support leg and the lower support leg, and the gap t1 is greater than the gap t2 between the safety support point 2-2 and the traveling slide 2-3 of the bridge rotation system. This ensures that the safety support point 2-2 and the self-adaptive load-bearing support point 2-1 are not subjected to force at the same time when the bridge is dismantled, and their functions do not overlap, thus improving the safety and controllability of construction.

[0026] Furthermore, the rollers of the traveling roller 2-1-2 have a conical structure, which is compatible with the annular slide of the traveling slide 2-3. The conical roller design enables the traveling roller 2-1-2 to roll stably along the annular slide and provides better guidance in the radial direction, reducing rolling friction and improving the smoothness of movement of the traveling roller 2-1-2. This ensures that the bridge is accurately aligned during the rotation process and improves the safety and reliability of construction.

[0027] In this embodiment, the hydraulic device 2-1-3 is configured to automatically release pressure when the force on the adaptive support point 2-1 exceeds the design value, and automatically pressurize when the force is lower than the design value, so as to keep the force on the adaptive support point 2-1 within the design range. The hydraulic device 2-1-3 dynamically adjusts its internal pressure by monitoring the stress state of the adaptive support point 2-1 in real time, ensuring that the adaptive support point 2-1 can provide stable support force under various construction conditions, avoiding structural damage due to excessive force or affecting the stability of bridge rotation due to insufficient force. During rotation, the hydraulic device 2-1-3 only bears vertical pressure and can only move up and down. The vertical force characteristics of the hydraulic device 2-1-3 ensure that it does not generate lateral force during lifting or lowering, thereby preventing the adaptive support point 2-1 from tilting or shifting during the stress process, improving the stability and safety of the system. The hydraulic device 2-1-3 includes multiple jacks. During the rotation, the jacks lift, causing the lower support leg to move upward. Since the upper support leg is fixed on the upper turntable, the jacks of the hydraulic device 2-1-3 lift during the rotation, causing the lower support leg to move upward and become fixed to the upper support leg. The hydraulic device 2-1-3 provides precise lifting force during the lifting process, causing the lower support leg to gradually rise and eventually make stable contact with the upper support leg. This achieves precise positioning during the bridge rotation process, reduces the need for bridge posture adjustment after rotation, and improves construction efficiency.

[0028] Furthermore, the force sensor 2-1-1 is ultra-thin and features real-time pressure display and over-limit warning functions. The real-time pressure display function of the force sensor 2-1-1 dynamically reflects the force on the adaptive bearing support 2-1, allowing construction personnel to monitor changes in support force during the rotation process and ensuring the safety of the rotation construction. The over-limit warning function enables the force sensor 2-1-1 to immediately issue an alarm signal when it detects a force exceeding the design upper limit or falling below the design lower limit, prompting construction personnel to make adjustments or the system to automatically adjust the pressure of the hydraulic device 2-1-3, thereby ensuring the stability and safety of the bridge rotation construction.

[0029] In this embodiment, based on the stress and construction requirements, 3-4 adaptive bearing supports 2-1 and safety supports 2-2 can be set according to the rotation tonnage, the size of the ball joint 1, the ease of construction, and the requirements for rotation stress and stability. These supports are evenly distributed along the travel slide 2-3 of the bridge's horizontal rotation system. This even distribution makes the stress on the entire rotation system more balanced, avoiding the uneven load-bearing problem caused by single-point stress in traditional ball joint systems, thus improving the stability and safety of the bridge during rotation. Each adaptive bearing support 2-1 provides 1000-2000 tons of vertical support force, bearing 10%-20% of the total rotation tonnage of the bridge. Through multiple bearing devices 3 jointly bearing the main stress during the bridge rotation, the load on the central ball joint 1 is significantly reduced, thereby reducing the stress concentration problem on the lower abutment, improving the overall system's load-bearing capacity, and making bridge rotation construction applicable to complex conditions such as ultra-large tonnage, long cantilever, and large span, enhancing the safety and controllability of construction.

[0030] In summary, this utility model discloses a multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment. The key innovative structure of this system is the load-bearing rotation device 2 uniformly arranged around the central ball joint 1, which consists of three parts: an adaptive load-bearing fulcrum 2-1, a safety fulcrum 2-2, and a traveling slide 2-3. The adaptive load-bearing fulcrum 2-1 includes a hydraulic device 2-1-3 and a force sensor 2-1-1. The hydraulic device 2-1-3 uses multiple sets of jacks to simultaneously lift or lower, realizing the active adjustment of the supporting force of the load-bearing device. The force sensor 2-1-1 can monitor and display the supporting force in real time and has an over-limit warning function. The safety fulcrum 2-2 plays an auxiliary safety role, improving the safety and reliability of the overall structure. The bottom of the adaptive load-bearing fulcrum 2-1 on the traveling slide 2-3 adopts a conical structure of traveling rollers 2-1-2, which travel radially along the circular track, using rolling friction to reduce running resistance and improve the stability and safety of the rotation system. The adaptive load-bearing support 2-1 features active load-bearing, adaptive control, real-time monitoring, and precise movement, enabling fine-tuning of the bridge beam's posture before rotation. This ensures intelligent and automatic adjustment of the bridge's posture during rotation, addressing unbalanced loads and unexpected situations, and improving the safety of bridge rotation. A single adaptive load-bearing support 2-1 can provide 1000 to 2000 tons of vertical support force, bearing 10-20% of the total rotation tonnage of the bridge, effectively improving the stress conditions of the upper and lower turntables and enhancing the load-bearing capacity of the entire rotation system.

[0031] This invention overcomes the limitations of traditional center ball hinge 1-rotation systems, enabling the construction of rotating bridges with ultra-large tonnage (50,000-80,000 tons), long cantilever (150-300m), large span (250-400m), significant planar curves, asymmetrical span rotation, wide bridge decks, and tall structures. It overcomes the problems of traditional center ball hinge 1-rotation systems, such as a single stress pattern, complex construction control, and insufficient anti-overturning capacity under large tonnage requirements. Compared to traditional center ball hinge 1-rotation systems, this system increases investment by only about 30%, but significantly enhances the anti-overturning safety and attitude maintenance capabilities of asymmetrical span rotation, curved bridges, tall bridge structures, and unbalanced construction loads (such as sudden strong winds and equipment falling from the bridge deck). This invention provides a multi-point bearing bridge rotation system with real-time monitoring and adaptive adjustment functions. It not only significantly improves the load-bearing capacity of the rotation system, but also achieves intelligent and precise adjustment of the bridge posture through real-time monitoring and active adjustment of the supporting force, so as to ensure that the bridge rotation process is safe and controllable. It has outstanding technical and economic advantages and broad engineering application prospects.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-point supported bridge swivel system capable of real-time monitoring and adaptive adjustment, characterized in that, The system includes a ball joint (1), a load-bearing rotation device (2), and a traction system (3). The ball joint (1) serves as the main support and is located at the center of the bridge rotation system. Multiple load-bearing rotation devices (2) serve as active load-bearing and automatically adjustable load-bearing supports and a traveling system, distributed around the ball joint (1). The traction system (3) is used to drive the bridge rotation. Each load-bearing rotation device (2) includes an adaptive load-bearing support (2-1), a safety support (2-2), and a traveling slide (2-3). The safety support (2-2) provides auxiliary support, and the traveling slide (2-3) serves as the adaptive load-bearing support. The force fulcrum (2-1) and the safety fulcrum (2-2) provide a motion track. The adaptive force fulcrum (2-1) is equipped with a force sensor (2-1-1), a traveling roller (2-1-2), and a hydraulic device (2-1-3). The force sensor (2-1-1) is used to monitor the force state of the adaptive force fulcrum (2-1) in real time. The traveling roller (2-1-2) causes the adaptive force fulcrum (2-1) to rotate in a circle along the annular traveling slide (2-3). The hydraulic device (2-1-3) is used to adjust the supporting force of the adaptive force fulcrum (2-1).

2. The real-time monitorable and self-adaptive adjusting multi-point supported bridge swivel system according to claim 1, characterized in that, The load-bearing rotating device (2) also includes a rubber pad and a pad plate. The hydraulic device (2-1-3) is installed on the pad plate. The rubber pad is installed between the top of the walking roller (2-1-2) and the pad plate. The load of the walking roller (2-1-2) is evenly distributed by the deformation of the rubber pad itself.

3. The real-time monitorable and self-adaptable multi-point supported bridge swivel system according to claim 2, characterized in that, The load-bearing rotation device (2) also includes a lower support foot and an upper support foot. The force sensor (2-1-1) is located at the bottom of the lower support foot, and the upper support foot is fixedly mounted on the upper turntable.

4. The real-time monitorable and self-adaptable multi-point supported bridge swivel system according to claim 3, characterized in that, A gap t1 is provided between the upper support leg and the lower support leg, and the gap t1 is greater than the gap t2 between the safety support point (2-2) and the traveling slide (2-3), so that the safety support point (2-2) and the adaptive load-bearing support point (2-1) are not subjected to force at the same time when the bridge is dismantled.

5. The multi-point load-bearing bridge rotation system with real-time monitoring and adaptive adjustment according to claim 4, characterized in that, The walking roller (2-1-2) has a conical structure.

6. The real-time monitorable and self-adaptive adjusting multi-point supported bridge swivel system according to claim 5, characterized in that, The hydraulic device (2-1-3) is configured to automatically release pressure when the force on the adaptive bearing support (2-1) exceeds the design value, and automatically pressurize when the force is lower than the design value, so as to keep the force on the adaptive bearing support (2-1) within the design range.

7. The real-time monitorable and self-adaptable multi-point supported bridge swivel system according to claim 6, characterized in that, During rotation, the hydraulic device (2-1-3) only bears pressure in the vertical direction and can only move up and down.

8. The real-time monitorable and self-adaptable multi-point supported bridge swivel system according to claim 7, characterized in that, The hydraulic device (2-1-3) includes multiple jacks. When rotating, the jacks lift, causing the lower support leg to move upward and become fixed to the upper support leg.

9. The real-time monitorable and self-adaptable multi-point supported bridge swivel system according to claim 1, characterized in that, The force sensor (2-1-1) is ultra-thin and features real-time pressure display and over-limit warning functions.

10. The real-time monitorable and self-adaptable multi-point supported bridge swivel system according to claim 1, characterized in that, Each of the adaptive load-bearing support points (2-1) and safety support points (2-2) is provided with 3-4 units. Each of the adaptive load-bearing support points (2-1) provides 1,000-2,000 tons of vertical support force, bearing 10%-20% of the total rotation tonnage of the bridge.

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