Vibration damping excitation apparatus and mobile device mounting system

Abstract

The invention provides vibration reduction excitation equipment and a movable device carrying system. The vibration reduction excitation equipment comprises a supporting assembly, a force bearing platform, a spring assembly arranged between the supporting assembly and the force bearing platform, an inerter, a motor connected with the inerter, a force transmission assembly connected with the inerter and the force bearing platform, and a sliding rail supporting the inerter, and the inerter can move along the sliding rail. According to the technical scheme provided by the invention, integrated and efficient connection of structure wind vibration control and excitation is realized, the wind vibration control and power test efficiency is improved, the manpower and time cost is saved, and the method is suitable for wind vibration control and excitation of multiple types of wind sensitive structures. And the vibration reduction excitation equipment can be dragged through the moving device, so that rapid deployment can be realized.

Description

Technical field

[0001] The invention relates to a vibration reduction excitation device and a movable device carrying system. [Background Technology]

[0002] Mechanical vibration reduction devices such as tuned mass dampers (TMDs), tuned liquid dampers (TLDs), and active mass dampers (AMDs) have been widely used in wind-induced vibration control of wind-sensitive structures, primarily due to their simple construction and efficient vibration suppression. Typically, these mechanical control devices are installed at the maximum position of the wind-sensitive structure's vibration mode and achieve vibration energy transfer and dissipation by tuning to the structure's wind-induced vibration modal frequency. However, the wind-induced vibration modes of actual structures are difficult to predict, and control devices installed in fixed locations may not be effective when wind-induced vibration occurs, thus limiting their effectiveness in wind-induced vibration control. Furthermore, when wind-sensitive structures vibrate, the dynamic characteristics of the structure (such as frequency and damping ratio) exhibit random values ​​due to the influence of wind environmental factors and require re-measurement. Traditional structural dynamic characteristic testing methods typically require the placement of fixed exciters on the structure, which undergo repeated installation and disassembly, increasing labor and time costs.

[0003] However, whether it is wind vibration control or vibration excitation, the device needs to provide a sufficiently large inertial force, which is usually achieved by large-mass components. On the one hand, a large-mass system that is too heavy makes transportation, installation and disassembly difficult. On the other hand, it also brings great challenges to the reciprocating loading of the drive system, making it difficult to unify the functions of traditional fixed-position wind vibration control devices and vibration excitation devices. Inertial mechanisms with mass amplification effects can often convert a large inertial mass with an extremely small physical mass, bringing possibilities for lightweight wind vibration control systems and vibration excitation systems. Existing inertial mechanisms are limited to fixed and single vibration reduction functions, and fail to achieve mobile and rapid deployment and the integration of vibration reduction and excitation functions.

[0004] In summary, the current technology has the following problems: 1. Traditional fixed vibration reduction devices have large and bulky components. Once installed, their position and function are difficult to adjust, and they cannot meet the wind-sensitive structures with complex participating modes, such as large-span bridges and high-rise buildings. The wind vibration control needs of these devices are usually not met. They have poor universality for multiple types of structures, and their service life is tied to a single structure, resulting in a waste of resources. 3. Large-scale wind vibrations of wind-sensitive structures are sudden, and fixed wind vibration control devices can often only be installed after the wind vibration ends, making it impossible to respond quickly to emergencies. 4. After the wind vibration event, a separate excitation device needs to be introduced to test the structural dynamic characteristics. The connection cycle between wind vibration control and dynamic characteristics testing is long, and the manpower and time costs are high.

[0005] In view of this, the present invention proposes an innovative technical solution, aiming to provide an integrated device that can flexibly and conveniently perform wind vibration control and excitation dynamic characteristics testing on wind-sensitive structures. [Summary of the invention]

[0006] The object of the present invention is to provide a vibration reduction and excitation device and a movable device carrying system.

[0007] To achieve one of the aforementioned objectives, the present invention provides a vibration reduction excitation device, wherein the vibration reduction excitation device includes a support assembly, a load-bearing platform, a spring assembly disposed between the support assembly and the load-bearing platform, an inertia container, a motor connected to the inertia container, a force transmission assembly connecting the inertia container and the load-bearing platform, and a slide rail supporting the inertia container, wherein the inertia container is linearly movable along the slide rail.

[0008] As a further improvement of an embodiment of the present invention, the inertia container is composed of a rack and pinion mechanism and a flywheel.

[0009] As a further improvement of one embodiment of the present invention, the force transmission component is a wedge mechanism or an articulated four-bar mechanism to achieve force transmission between the vertical movement of the load-bearing platform and the horizontal movement of the inertia container.

[0010] As a further improvement of an embodiment of the present invention, the material of the slide rail is selected from one of polytetrafluoroethylene, high molecular polymer and ceramic-coated aluminum alloy.

[0011] As a further improvement of an embodiment of the present invention, the spring assembly includes multiple groups of parallel coil springs.

[0012] As a further improvement of an embodiment of the present invention, the vibration reduction excitation device further includes a clamping module, and the clamping module can be automatically controlled to clamp or release the spring assembly.

[0013] As a further improvement of an embodiment of the present invention, the clamping module can be raised and lowered in a controlled manner to clamp or release different positions of the spring assembly.

[0014] In order to achieve one of the above-mentioned purposes of the invention, the present invention also provides a movable device carrying system, wherein the movable device carrying system includes a vibration reduction excitation device, a mobile device and a control room as described in any of the above-mentioned technical solutions, the vibration reduction excitation device is arranged in the mobile device, the mobile device moves to change the position of the vibration reduction excitation device, and the control room is connected to the vibration reduction excitation device for controlling the vibration reduction excitation device.

[0015] As a further improvement of one embodiment of the present invention, the movable device carrying system includes a hydraulic station, and the control room sends instructions to the hydraulic station, which regulates the support assembly to lower the support assembly to achieve the separation of the vibration reduction excitation device from the movable device carrying system.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The vibration reduction and excitation equipment provided by this invention realizes the efficient integration of structural wind vibration control and excitation, improves the efficiency of wind vibration control and dynamic testing, saves manpower and time costs, and is suitable for wind vibration control and excitation of various types of wind-sensitive structures; in addition, the vibration reduction and excitation equipment has an inertia container with a mass amplification effect, which realizes the overall lightweight of the device, and can be towed by a mobile device when wind vibration occurs in the wind-sensitive structure, which can be quickly deployed, and can directly test the excitation dynamic characteristics of the structure after wind vibration control, without the need to reinstall and debug the exciter on the wind-sensitive structure, making it more convenient and labor-saving to use.

Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0019] Figure 1 It is a schematic diagram of a mobile device carrying system provided in a specific embodiment of the present application.

[0020] Figure 2 yes Figure 1 An enlarged schematic diagram of the vibration reduction and excitation equipment in the mobile device mounting system. [Specific implementation method]

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] See also Figures 1 to 2 As shown, the present invention provides a specific embodiment, which provides a movable device carrying system. Specifically, the movable device carrying system includes a vibration reduction excitation device 3, a mobile device 5 and a control room 1. The vibration reduction excitation device 3 is arranged in the mobile device 5. The mobile device 5 moves to change the position of the vibration reduction excitation device 3. The control room 1 is connected to the vibration reduction excitation device 3 for controlling the vibration reduction excitation device 3.

[0027] Furthermore, the vibration reduction excitation device 3 includes a support assembly 31, a load-bearing platform 34, a spring assembly 33 disposed between the support assembly 31 and the load-bearing platform 34, an inertia container 38, a motor 36 connected to the inertia container 38, a force transmission assembly 37 connecting the inertia container 38 and the load-bearing platform 34, and a slide rail 35 supporting the inertia container 38, and the inertia container 38 is movable along the slide rail 35.

[0028] The vibration reduction and excitation device 3 provided by the invention realizes the efficient integration of structural wind vibration control and excitation, improves the efficiency of wind vibration control and dynamic testing, saves manpower and time costs, and is suitable for wind vibration control and excitation of various types of wind-sensitive structures; in addition, the vibration reduction and excitation device 3 has an inertia container 38 with a mass amplification effect, which realizes the overall lightweight of the device, and when wind vibration occurs in the wind-sensitive structure, the mobile device 5 can tow the vibration reduction and excitation device to achieve rapid deployment, and directly perform excitation dynamic characteristic testing on the wind-sensitive structure after wind vibration control, without the need to reinstall and debug the exciter on the wind-sensitive structure, making it more convenient and labor-saving to use. Therefore, the technical solution provided by the invention realizes the efficient integration of structural wind vibration control and excitation, and realizes seamless switching between vibration reduction mode (eddy current energy consumption) and excitation mode (motor drive) through the conversion of the movement direction of the force transmission component, thereby improving the efficiency of wind vibration control and dynamic testing, saving manpower and time costs, and is suitable for wind vibration control and excitation of various types of wind-sensitive structures.

[0029] The mobile device carrying system also includes a hydraulic station 2 and a generator 4. The control room 1 sends instructions to the hydraulic station 2, and the hydraulic station 2 adjusts the support component 31 to lower the support component 31 to separate the vibration reduction excitation device 3 from the mobile device carrying system. The generator 4 can be selectively connected or disconnected with the motor 36 and the control room 1.

[0030] Specifically, the bottom base of the support assembly 31 contacts the wind-sensitive structure to be measured, mainly bears all the pressure of the vibration reduction excitation device 3, and is made of high-strength steel or high-performance composite materials.

[0031] Control room 1 is separated from hydraulic station 2, with vibration damping and excitation equipment 33 located behind it. A motor 36 within vibration damping and excitation equipment 3 is connected to an inertia chamber 38 and supported by a slide rail 35. The other end of inertia chamber 38 is connected to a force transmission assembly 37, which is connected to a spring assembly 33 via a load-bearing platform 34. The bottom of spring assembly 33 is connected to support assembly 31. Generator 4 is mounted at the rear of the mobile device mounting system.

[0032] The force transmission assembly 37 transmits force between the movement of the load-bearing platform 34 in a first direction and the movement of the inertia container 38 in a second direction, with the first direction and the second direction being perpendicular. Specifically, the force transmission assembly 37 transmits force between the vertical movement of the load-bearing platform 34 and the horizontal movement of the inertia container 38.

[0033] Furthermore, the force transmission assembly 37 includes a wedge mechanism or a gear rack mechanism. Of course, the force transmission assembly 37 can also be configured to include an articulated four-bar mechanism, etc. Through this steering assembly mechanism, the space required for the vibration reduction excitation device to work is reduced, achieving a high degree of integration.

[0034] Specifically, the inertial chamber 38 comprises a rack-and-pinion mechanism and a flywheel, which amplifies physical mass through a transmission ratio, achieving a lightweight, high inertial force output. Specifically, the motor 36 is connected to the rack-and-pinion mechanism, driving the flywheel to achieve a large inertial mass. The combination of the rack-and-pinion and flywheel in the inertial chamber 38 enables high inertial mass in a compact package. The large transmission ratio, adjustable from 50 to 200, satisfies the vibration damping and excitation requirements of large masses. Furthermore, the rack-and-pinion mechanism has pre-reserved connections at both ends, enabling bidirectional connection to the force transmission assembly 37 and the motor 36, and allows movement along the slide rail 35. The slide rail 35 can be constructed of low-friction, wear-resistant, and high-strength materials. Specifically, the material of the slide rail 35 is selected from polytetrafluoroethylene, polymers, or ceramic-coated aluminum alloys to ensure low friction and high durability.

[0035] The spring assembly 33 is composed of multiple groups of parallel coil springs. The spring assembly 33 connects the support assembly 31 and the inertia container 38. The spring assembly 33 is designed to only bear pressure loads to avoid buckling instability.

[0036] The vibration reduction excitation device 3 further includes a clamping module 32 , which can be automatically controlled to clamp or release the spring assembly 33 .

[0037] Furthermore, the clamping module 32 can be controlled to rise and fall to clamp or release different positions of the spring assembly 33. Specifically, the clamping module 32 with an intelligent lifting function is controlled by the control room 1. Specifically, the clamping module 32 adopts a wedge block clamping mechanism, which realizes vertical movement while clamping and releasing multiple sets of parallel coil springs, thereby adjusting the pitch of the spring assembly 33, controlling the stiffness contributed by the spring when participating in vibration, and tuning to any wind vibration mode of the wind-sensitive structure in the frequency range of 0.1Hz to 1Hz. Therefore, the technical solution provided by the invention can use the lifting clamping module 32 to adjust the spring stiffness, and the stiffness can be adjusted to ±5% of the target modal frequency, to achieve rapid adaptive matching of different wind vibration modes, improve the accuracy and applicability of vibration reduction control, and solve the problem that traditional wind vibration control devices are difficult to effectively tune for complex multi-modal wind vibrations.

[0038] When a wind-sensitive structure requires emergency wind vibration control, the mobile device mounting system moves to the position of maximum structural amplitude. Control room 1 sends a command to hydraulic station 2, which regulates support assembly 31, lowering vibration reduction excitation device 3 and separating it from the mobile device mounting system. The clamping module 32 can be raised and lowered, adjusting the spring stiffness through clamping and releasing operations. The inertia chamber 38 includes a rack-and-pinion inertial mass amplification mechanism, which generates a large inertial mass by driving its internal flywheel, thereby achieving a lightweight mass system. The adjustable stiffness of the spring assembly 33 enables rapid tuning control of the target wind vibration mode. Driven by wind vibration, the rack and pinion mechanism in the inertial container 38 is driven to vibrate by the spring assembly 33 through the force transmission assembly 37, and synchronously drives the permanent magnet inside the motor 36 to move along the slide rail 35. At this time, the magnetic flux lines generated by the permanent magnet inside the motor 36 cut, and the induction coil inside the motor 36 forms eddy currents. The magnetic field generated by the eddy currents reacts to the permanent magnets to form corresponding electromagnetic damping. The electromagnetic damping ultimately acts on the wind-sensitive structure, thereby reducing the vibration of the wind-sensitive structure.

[0039] When the wind-sensitive structure needs to be excited to vibrate, the mobile device mounting system moves to the position where the structure experiences maximum wind-induced vibration amplitude. Control room 1 sends a command to hydraulic station 2, which controls support assembly 31. Support assembly 31 lowers and supports vibration-damping excitation device 3, separating it from the mobile device mounting system. Control room 1 instructs the power supply to power motor 36. The power output of motor 36 generates a periodic reciprocating driving force to the rack-and-pinion mechanism of inertial device 38, driving the flywheel of inertial device 38 back and forth along slide rail 35, generating a large inertial force. Force transmission assembly 37 transmits this force to load-bearing platform 34, which then transmits it to the wind-sensitive structure via spring assembly 33. This synchronously excites the wind-sensitive structure to reciprocate, enabling dynamic characteristic testing of the wind-sensitive structure.

[0040] Specifically, motor 36 consists of a stator, rotor, and windings, with an operating power of up to 70 kW, capable of meeting both drive and energy consumption requirements. Specifically, the stator core is constructed from laminated silicon steel sheets to reduce eddy current losses. The stator windings are conductors wound within the stator core slots, generating a magnetic field. The rotor, the rotating portion of motor 36, consists of the rotor core and rotor windings. Furthermore, the rotor windings cut through the magnetic flux lines in the rotating magnetic field, generating an induced electromotive force and current, which in turn creates electromagnetic torque, rotating the motor and driving the rack-and-pinion mechanism of inertial container 38. In wind vibration control, the motor 36 is disconnected from the control room 1. When the wind-sensitive structure is driven to vibrate, the magnetic flux lines generated by the motor 36 are cut, thereby forming eddy currents and dissipating the vibration energy of the wind-sensitive structure. In the application of wind-sensitive structure excitation, the motor 36 is started and connected to the control room 1. The power output end of the motor 36 outputs a periodic reciprocating driving force to the gear rack mechanism of the inertia container 38, causing the flywheel to reciprocate. The force is transmitted to the load-bearing platform 34 through the force transmission component 37, and then transmitted to the spring component 33 and the support component 31 in sequence, thereby synchronously exciting the wind-sensitive structure to reciprocate.

[0041] In summary, the technical solution provided by the present invention breaks through the limitations of traditional fixed wind vibration control devices and proposes a movable device mounting system that can be quickly deployed to the location where the wind vibration response is most significant. It can be used for wind vibration control and can also be used to directly perform dynamic characteristics testing after the wind vibration ends, thereby realizing integrated and efficient operation and improving the adaptability and emergency response capabilities of wind vibration control.

[0042] In addition, in this preferred embodiment, the mobile device 5 of the movable device carrying system can be a special vehicle with a total vehicle weight not exceeding 50 tons; the control room 1 includes a control console, a process control system, a safety system, etc.; specifically, the control console is the core equipment of the control room 1, including a control screen, an operating table and a control console chair, etc. The operating table contains a motion control system and a collector of the vibration reduction excitation device 3, and performs human-computer interaction and database design through a host computer (PC). The control room has a built-in vibration amplitude monitoring module. When it detects that the amplitude exceeds the safety threshold, it automatically cuts off the motor power supply and triggers the hydraulic locking mechanism to ensure emergency braking of the device; the hydraulic station 2 is composed of a hydraulic pump, a drive motor, an oil tank, a directional valve, a throttle valve, an overflow valve, etc.

[0043] The above is only a specific embodiment of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the scope of protection of the present invention.

Claims

1. A vibration reduction excitation device, characterized in that: The vibration reduction excitation device includes a support assembly, a load-bearing platform, a spring assembly arranged between the support assembly and the load-bearing platform, an inertia container, a motor connected to the inertia container, a force transmission assembly connecting the inertia container and the load-bearing platform, and a slide rail supporting the inertia container, and the inertia container can move linearly along the slide rail.

2. The vibration reduction excitation device according to claim 1, characterized in that: The inertia container is composed of a rack and pinion mechanism and a flywheel.

3. The vibration reduction excitation device according to claim 1, characterized in that: The force transmission component is a wedge-shaped mechanism or an articulated four-bar mechanism, which realizes the force transmission between the vertical movement of the load-bearing platform and the horizontal movement of the inertia container.

4. The vibration reduction excitation device according to claim 1, characterized in that: The material of the slide rail is selected from one of polytetrafluoroethylene, high molecular polymer and ceramic-coated aluminum alloy.

5. The vibration reduction excitation device according to claim 1, characterized in that: The spring assembly includes multiple groups of parallel coil springs.

6. The vibration reduction excitation device according to claim 1, characterized in that: The vibration reduction excitation device further includes a clamping module, which can be automatically controlled to clamp or release the spring assembly.

7. The vibration reduction excitation device according to claim 6, characterized in that: The clamping module can be raised and lowered in a controlled manner to clamp or release different positions of the spring assembly.

8. A mobile device carrying system, characterized in that: The movable device carrying system includes a vibration reduction excitation device, a mobile device and a control room as described in any one of claims 1 to 7, the vibration reduction excitation device is arranged in the mobile device, the mobile device moves to change the position of the vibration reduction excitation device, and the control room is connected to the vibration reduction excitation device for controlling the vibration reduction excitation device.

9. The mobile device mounting system according to claim 8, wherein: The movable device carrying system includes a hydraulic station. The control room sends instructions to the hydraulic station, and the hydraulic station regulates the support assembly to lower the support assembly to separate the vibration reduction excitation device from the movable device carrying system.

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