A damper elastic intelligent support device

Abstract

The utility model discloses a kind of damper elastic intelligent support devices, including support plate;Elastic element is set in the first support plate top of support plate, can be mechanical spring assembly or three-cavity adjustable stiffness air spring, the threaded rod bottom of mechanical spring assembly is fixedly connected with first support plate by nut, spring is encircled in the outside of threaded rod;Three-cavity adjustable stiffness air spring includes main air chamber, first auxiliary air chamber and second auxiliary air chamber, each air chamber is connected by the pipeline of solenoid valve control each other;Backing plate, sleeve is set on threaded rod and bottom is fixedly connected with spring top end or set in three-cavity adjustable stiffness air spring top;Multi-dimensional sensor module;Electronic control system is connected with solenoid valve and multi-dimensional sensor module.This device is ensured by elastic element that support device and damper realize high degree synchronous deformation avoid jam stagnation and strength, feedback data in real time by sensor, provide quantization basis for state evaluation and accurate maintenance, improve structural safety and reliability.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of damper technology, and more specifically, relate to an elastic intelligent support device for dampers. Background Technology

[0002] In recent years, viscous dampers have become a key device for earthquake and wind resistance in long-span bridges. To accommodate both the ultra-large displacement and continuous energy dissipation requirements under rare earthquakes, viscous dampers typically employ a long-stroke design, which significantly increases their cylinder length and self-weight. During on-site installation, the damper is often arranged horizontally or with a slight inclination. Under the effect of continuous self-weight, it often experiences downward deflection at mid-span, resulting in a non-uniform distribution of the piston-cylinder clearance along the length direction, forming an initial eccentricity.

[0003] Under the influence of cyclic loads such as temperature changes, wind force, and vehicle traffic, the initial eccentricity mentioned above will induce additional bending moments, causing the seals to be subjected to cyclic lateral pressure, accelerating the wear and aging of the seals. Once leakage occurs in the seals, the damping force of the damper will gradually decrease, affecting its energy dissipation performance. At the same time, under the compression-bending coupling state, the stable bearing capacity of the piston rod will decrease, and under extreme conditions such as earthquakes, it may even trigger buckling, posing a serious threat to the overall safety of the bridge.

[0004] Currently, some projects use the method of adding vertical supports near the middle of the damper cylinder to reduce the self-weight deflection of the damper without increasing the damper cross-section or replacing the damper. This significantly reduces the rate of uneven wear of the seals, isolates the transmission of additional bending moment to the ends, delays the occurrence of oil leakage, maintains the energy dissipation efficiency of the damper throughout its entire stroke, extends its service life, and improves the reliability of the bridge in strong earthquakes.

[0005] However, existing damper vertical support devices still have the following problems: First, the stiffness of the vertical rigid support is not adjustable. When the service condition of the damper changes, there will still be an eccentric bending moment. Moreover, the existing simple elastic support can only passively adapt to deformation and cannot actively adjust the stiffness or apply reaction force according to the type and intensity of external excitation.

[0006] Second, the deformation of the support device and the damper is not coordinated, which can easily lead to jamming and congestion between the two, which may cause the damper to jam and affect its normal operation. Third, the existing support system lacks intelligent monitoring methods, making it impossible to obtain real-time data on the mid-span displacement and internal forces of the damper. Furthermore, it lacks the ability to conduct real-time intelligent diagnosis and prediction of the condition of the damper and the support system itself, making it difficult to provide timely warnings of potential hazards. This is not conducive to the condition assessment and precise maintenance of the damper, and affects the safe operation of the bridge. Utility Model Content

[0007] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides an elastic intelligent support device for dampers. Through elastic elements, it can adapt to the deformation of the damper's own weight and also realize the active adjustment of the stiffness of the support device, enabling active vertical elastic support of the damper and ensuring that the support device and the damper deform in a highly synchronized manner. At the same time, it is equipped with a multi-sensor automatic monitoring system to provide real-time feedback data, providing a quantitative basis for condition assessment and precise maintenance.

[0008] To achieve the above objectives, this utility model provides an elastic intelligent support device for a damper, comprising a support plate, including a first support plate, a second support plate, and a support column fixedly connected between the first support plate and the second support plate; An elastic element, disposed above the first support plate, may be a mechanical spring assembly or a three-chamber adjustable stiffness air spring. The mechanical spring assembly includes a spring, a nut, and a threaded rod. The bottom of the threaded rod is fixedly connected to the first support plate via the nut, and the spring surrounds the outside of the threaded rod. The three-chamber adjustable stiffness air spring includes a main air chamber, a first auxiliary air chamber, and a second auxiliary air chamber. The air chambers are interconnected via pipelines controlled by solenoid valves. A pad is fitted onto the threaded rod and its bottom is fixedly connected to the top of the spring or is set on the top of the three-chamber adjustable stiffness air spring. The multi-dimensional sensor module includes a displacement sensor, a pressure sensor, an acceleration sensor, and a barometric pressure sensor. The electronic control system is electrically connected to the solenoid valve and the multi-dimensional sensor module.

[0009] Furthermore, the solenoid valve includes a first solenoid valve and a second solenoid valve, wherein the first solenoid valve is connected to the main air chamber and the first auxiliary air chamber; and the second solenoid valve is connected to the main air chamber and the second auxiliary air chamber.

[0010] Furthermore, the three-chamber adjustable stiffness air spring also includes an air pump and a pressure relief valve.

[0011] Furthermore, the three-chamber adjustable stiffness air spring can achieve three working modes—single-chamber operation, dual-chamber connection, and three-chamber connection—by controlling the opening and closing of the first and second solenoid valves.

[0012] Furthermore, the displacement sensor is disposed between the pad and the first support plate; the pressure sensor is fixedly disposed on the support column; the acceleration sensor is mounted on the pad; and the air pressure sensor is installed in each independent air chamber of the three-chamber adjustable stiffness air spring.

[0013] Furthermore, the pad and the threaded rod are not in direct contact.

[0014] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: (1) This utility model discloses an elastic intelligent support device for a damper, which uses a three-chamber adjustable stiffness air spring as the elastic element and integrates a solenoid valve, an air pump, a pressure relief valve, and an electronic control system. The electronic control system accurately determines the required stiffness under the current working condition based on data collected in real time by multi-dimensional sensors (displacement, acceleration, force, and air pressure), and drives the solenoid valve to open and close, changing the effective volume of the air spring, thereby realizing the active and rapid switching of stiffness in three modes: high, medium, and low. This solves the problem of the single and passive adaptation of stiffness in traditional elastic supports, enabling the device to provide the optimal adaptive support stiffness according to the type and intensity of external excitations (such as earthquakes, strong winds, and daily traffic), significantly improving the performance of the damper under different service conditions, effectively suppressing excessive deformation, and ensuring that the device deforms synchronously with the damper, further improving the overall safety and comfort of the bridge.

[0015] (2) The present invention provides an elastic intelligent support device for a damper. By using a common mechanical spring as the elastic element and combining it with a pre-compression installation method, this device solves the problem of initial deflection caused by the damper's own weight, effectively reducing the initial eccentricity between the piston and cylinder. When the damper experiences vertical deflection due to reciprocating motion, the mechanical spring can generate an adaptive force value through its own deformation, simultaneously achieving synchronous deformation of the support device and the damper, thereby completely avoiding the jamming and stiffening phenomenon that easily occurs in traditional rigid supports. This elastic support mechanism ensures smooth operation of the damper throughout its entire stroke range, delays the wear and aging of the seals, and extends the service life of the damper.

[0016] (3) This utility model provides an elastic intelligent support device for a damper, integrating multi-dimensional sensor modules such as displacement sensors, pressure sensors, acceleration sensors, and air pressure sensors. The sensors collect key data in real time, including the vertical displacement of the damper, the vertical force of the support, the vibration acceleration, and the pressure of each air chamber of the air spring, and transmit them to the electronic control system for real-time processing. By comparing and analyzing the sensor data with preset thresholds and control strategies, the system can accurately determine the current working condition, assist in calibrating stiffness adjustment, and the sensors automatically monitor real-time feedback data, providing a quantitative basis for the condition assessment and precise maintenance of the damper and support device. This provides a solid data foundation for the full life cycle health management, fault early warning, and predictive maintenance of the damper, significantly reducing operation and maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a damper elastic intelligent support device according to Embodiment 1 of this utility model; Figure 2This is a schematic diagram of the initial installation state of a damper elastic intelligent support device according to Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the structure of a damper elastic intelligent support device according to Embodiment 2 of this utility model.

[0018] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-damper, 2-pad, 3-spring, 4-nut, 5-threaded rod, 6-displacement sensor, 7-pressure sensor, 8-support plate, 81-first support plate, 82-support column, 83-second support plate, 9-three-chamber adjustable stiffness air spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1 like Figure 1 As shown, this embodiment of the present invention provides an elastic intelligent support device for a damper, including a pad 2, an elastic element, a displacement sensor 6, a pressure sensor 7, and a support plate 8, wherein... The support plate 8 includes a first support plate 81, a support column 82, and a second support plate 83, which provide overall support for the device. The second support plate 83 is fixed to the supporting structure of the bridge by anchor bolts, and the support column 82 is fixedly connected between the second support plate 83 and the first support plate 81, providing a stable support frame.

[0021] The elastic element is disposed above the first support plate 81 and is a common mechanical spring, including a spring 3, a nut 4 and a threaded rod 5. The threaded rod 5 passes vertically through the first support plate 81 and is fixedly connected to the first support plate 81 by the nut 4.

[0022] The spring 3 surrounds the outside of the threaded rod 5 and adapts to the vertical deflection changes caused by the reciprocating motion of the damper 1 through its own deformation.

[0023] The bottom of the pad 2 is fixedly connected to the top of the spring 3 and contacts the bottom of the cylinder of the damper 1 to bear the vertical load of the damper 1. The pad 2 has a hole and is sleeved on the threaded rod 5 through the hole, but there is no direct contact between the pad 2 and the threaded rod 5, which ensures that the pad 2 can move freely vertically on the threaded rod 5.

[0024] The displacement sensor 6 is disposed between the pad 2 and the first support plate 81 and is used to monitor the vertical displacement of the damper 1.

[0025] The pressure sensor 7 is fixedly mounted on the support column 82 and is used to monitor the changes in the vertical force of the support device.

[0026] During the installation of the damper elastic support device, a certain pre-compression force is applied to the spring 3 by tightening the nut at the top of the threaded rod 5 passing through the pad 2, in order to eliminate the initial deflection of the damper 1 caused by its own weight (such as...). Figure 2 (As shown). After the damper 1 naturally contacts the pad 2, the nut is loosened, and the device begins to work. When the initial vertical deflection of the damper 1 changes due to reciprocating motion or other reasons, the pad 2 located below the damper will also move vertically accordingly. The spring 3, which provides support below the pad 2, will also deform, thereby generating different force values ​​to adapt to, weaken, or eliminate the change in vertical deflection of the damper 1. This utility model device, while eliminating or weakening the vertical deflection of the damper 1 caused by its own weight and reciprocating motion, can also achieve synchronous deformation of the support device and the damper 1 through the deformation of the spring 3, avoiding jamming or constriction between the two.

[0027] Meanwhile, during the operation of the damper elastic support device, the displacement sensor 6 set between the pad 2 and the first support plate 81 will monitor the vertical displacement of the pad 2 in real time, that is, the vertical displacement of the damper 1; the pressure sensor installed on the support column 82 will monitor the vertical force change of the vertical support device, realize the real-time monitoring of the damper's service status, and provide a quantitative basis for condition assessment and precise maintenance.

[0028] Example 2 In this embodiment, the elastic element is a three-chamber adjustable stiffness air spring 9, such as... Figure 3 As shown, the three-chamber adjustable stiffness air spring 9 includes a first auxiliary air chamber, a main air chamber, and a second auxiliary air chamber connected in series from top to bottom. Each chamber is an independent, sealed cavity, and they are interconnected via pipelines controlled by solenoid valves. The solenoid valves include a first solenoid valve connected to both the main air chamber and the first auxiliary air chamber, and a second solenoid valve connected to both the main air chamber and the second auxiliary air chamber. The three-chamber adjustable stiffness air spring 9 also includes an air pump and a pressure relief valve for inflating and adjusting the air pressure. The stiffness of the three-chamber adjustable stiffness air spring 9 is adjusted by changing the effective volume of the air spring. When the pressure inside the airbag is relatively stable, a larger effective volume results in a lower stiffness of the air spring; a smaller effective volume results in a higher stiffness.

[0029] Furthermore, the device in this embodiment also includes an accelerometer, a pressure sensor, and an electronic control system. The accelerometer is mounted on the pad 2 to monitor the vibration acceleration of the damper and support device. The pressure sensor is installed inside each independent chamber of the three-chamber adjustable stiffness air spring 9 to monitor the internal pressure of each chamber. One end of the electronic control system is electrically connected to the first solenoid valve, the second solenoid valve, the air pump, and the pressure relief valve, and the other end is electrically connected to each sensor. Information collected by each sensor is transmitted to the electronic control system. The electronic control system processes the data from all sensors in real time and, according to a preset control strategy, sends commands to the first and second solenoid valves controlling the connecting pipes of each chamber. The solenoid valves open or close, changing the connection state of the chambers to achieve different total effective volumes, thereby instantly changing the stiffness of the air spring. Specifically, in this embodiment, the three-chamber adjustable stiffness air spring changes the total volume of the working air chamber by controlling the opening and closing combination of two solenoid valves, thereby achieving three different support stiffnesses: Mode 1: Single-chamber working mode (high rigidity). Both the first and second solenoid valves are closed, and only the main air chamber is engaged in operation. In this mode, the total air chamber volume is the smallest and the air spring stiffness is the highest. It is suitable for extreme working conditions such as earthquakes to prevent excessive bending deformation.

[0030] Mode 2: Dual-chamber connection mode (medium stiffness). The first solenoid valve is open, and the second solenoid valve is closed, connecting the main air chamber and the first auxiliary air chamber to form a medium-sized integrated air chamber. The second auxiliary air chamber is closed. In this mode, the total air chamber volume increases, and the air spring stiffness decreases to a medium level, suitable for situations with large loads such as strong winds, providing effective support while maintaining a certain degree of flexibility.

[0031] Mode 3: Three-chamber connection mode (low stiffness). Both the first and second solenoid valves are open, and the main air chamber, the first auxiliary air chamber, and the second auxiliary air chamber are all connected to form a maximized overall air chamber with the largest total air chamber volume and the lowest air spring stiffness. This mode is suitable for high-frequency micro-amplitude vibrations such as daily traffic flow and temperature changes. The device has greater flexibility and can follow the movement of the damper, completely avoiding jamming.

[0032] In the automatic adjustment system of a three-chamber adjustable stiffness air spring, data thresholds for each sensor are set in the electronic control system. By comparing the real-time sensor data collected by various sensors with the preset thresholds, the required stiffness is accurately determined. Specifically: when the displacement sensor detects a large and rapid change in the support position, and the acceleration sensor displays a high vertical acceleration value, the system determines that a higher stiffness is needed to quickly suppress vibration and stabilize the support state. At this time, all solenoid valves are closed, causing the air spring to enter a single-chamber working mode, providing high stiffness with the minimum effective volume; if the displacement sensor detects a moderate change in the support position, and the acceleration sensor value is in the intermediate range... When the vertical force detected by the force sensor is relatively stable, the system determines that moderate stiffness is needed to balance comfort and stability. It then opens the first solenoid valve connecting the main air chamber and the first auxiliary air chamber, closes the second solenoid valve connecting the second auxiliary air chamber, and switches to a dual-chamber connection mode to achieve moderate stiffness with a moderate effective volume. Conversely, when the displacement sensor shows slow and small changes in the support position, the acceleration sensor reading is low, and the vertical force detected by the force sensor is stable, the system determines that comfort is currently more important, requiring lower stiffness to buffer minor vibrations. In this case, all solenoid valves are opened, connecting the main air chamber to the first and second auxiliary air chambers to achieve the lowest stiffness with the maximum effective volume. Simultaneously, the pressure sensor monitors the pressure in each chamber in real time, assisting in calibration during stiffness determination. If the pressure deviates from the preset range in a certain mode, the system first adjusts the pressure to a reasonable value, then combines data from other sensors to ultimately determine whether to maintain the current stiffness mode or switch to a more suitable mode, ensuring the accuracy and reliability of stiffness adjustment.

[0033] The elastic intelligent support device of this invention is based on multi-dimensional perception and intelligent active adjustment of the support device stiffness, which improves the performance, reliability and management efficiency of the damper support, and realizes active adaptation to the vertical deflection of the damper of long-span bridge and full life cycle health management.

[0034] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A damper elastic intelligent support device, characterized in that, include, The support plate (8) includes a first support plate (81), a second support plate (83), and a support column (82) fixedly connected between the first support plate (81) and the second support plate (83); The elastic element, disposed above the first support plate (81), can be a mechanical spring assembly or a three-chamber adjustable stiffness air spring (9). The mechanical spring assembly includes a spring (3), a nut (4), and a threaded rod (5). The bottom of the threaded rod (5) is fixedly connected to the first support plate (81) through the nut (4), and the spring (3) surrounds the outside of the threaded rod (5). The three-chamber adjustable stiffness air spring (9) includes a main air chamber, a first auxiliary air chamber, and a second auxiliary air chamber. The air chambers are interconnected through pipelines controlled by solenoid valves. The pad (2) is sleeved on the threaded rod (5) and its bottom is fixedly connected to the top of the spring (3) or set on the top of the three-chamber adjustable stiffness air spring; The multidimensional sensor module includes a displacement sensor (6), a pressure sensor (7), an acceleration sensor, and a barometric pressure sensor; The electronic control system is electrically connected to the solenoid valve and the multi-dimensional sensor module.

2. The damper elastic intelligent support device according to claim 1, characterized in that, The solenoid valve includes a first solenoid valve and a second solenoid valve. The first solenoid valve is connected to the main air chamber and the first auxiliary air chamber. The second solenoid valve is connected to both the main air chamber and the second auxiliary air chamber.

3. The damper elastic intelligent support device according to claim 2, characterized in that, The three-chamber adjustable stiffness air spring also includes an air pump and a pressure relief valve.

4. The damper elastic intelligent support device according to claim 3, characterized in that, The three-chamber adjustable stiffness air spring (9) achieves three working modes—single-chamber operation, double-chamber connection, and triple-chamber connection—by controlling the opening and closing of the first and second solenoid valves.

5. A damper elastic intelligent support device according to any one of claims 1-4, characterized in that, The displacement sensor (6) is disposed between the pad (2) and the first support plate (81); the pressure sensor (7) is fixedly disposed on the support column (82); the acceleration sensor is mounted on the pad (2); and the air pressure sensor is mounted inside each independent air chamber of the three-chamber adjustable stiffness air spring.

6. A damper elastic intelligent support device according to any one of claims 1-4, characterized in that, The pad (2) and the threaded rod (5) are not in direct contact.

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