Vibration damping device and vibration damping method
By designing a combination of frame, ropes, damping chamber, and gate on the self-elevating platform, the center of gravity position was adjusted by the flow of liquid within the damping chamber, solving the problem of poor damping effect and improving the vibration control capability of the self-elevating platform.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-04-03
AI Technical Summary
Existing damping devices are ineffective on self-elevating platforms, failing to effectively adjust the center of gravity and resulting in insufficient vibration control.
A vibration damping device was designed, including a frame, ropes, a damping chamber, and a first gate. The center of gravity position is adjusted by controlling the flow of liquid in the damping chamber, and the opening of the damping orifice is controlled by the first gate to achieve rapid recovery of a stable state.
By adjusting the center of gravity of the damping chamber, the damping effect can be significantly improved, allowing the damping chamber to quickly return to a stable state and reducing the impact of vibration.
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Figure CN121782325A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of marine engineering, and in particular to a vibration reduction device and vibration reduction method. Background Technology
[0002] Elevating platforms, as crucial operational equipment, are widely used in offshore oil and gas exploration, offshore wind power installation and maintenance, and other fields. Due to the complex and variable marine environment, elliptical platform structures are frequently subjected to wind loads, wave loads, and potential seismic loads. Vibration issues are particularly prominent under extreme conditions such as typhoons and hurricanes. Severe structural vibration not only reduces the structural durability of the elliptical platform and increases the risk of fatigue damage, but also seriously threatens operational safety. Furthermore, excessive vibration significantly reduces the comfort of personnel on the elliptical platform, affecting work efficiency and even their health. Therefore, controlling the structural vibration of elliptical platforms has become one of the most pressing technical challenges in the field of marine engineering.
[0003] Currently, the vibration reduction technologies used in marine jack-up platforms are mostly rubber vibration isolators or spring vibration isolators. While these damping devices can provide some buffering effect, they lack the function of adjusting the center of gravity position, resulting in poor damping performance. Therefore, existing damping devices suffer from the problem of inadequate damping effect. Summary of the Invention
[0004] The purpose of this application is to provide a vibration damping device to solve the problem of poor damping effect in existing damping devices.
[0005] This application provides a vibration damping device, including a frame, a rope, a damping chamber, and two first gates. One end of the rope is fixed to the frame. The damping chamber is fixed to the other end of the rope, and the damping chamber and the frame are spaced apart. The damping chamber includes a central chamber and two edge chambers. Each edge chamber is provided with a first damping hole communicating with the central chamber. Liquid is disposed in the central chamber and the two edge chambers. When the damping chamber swings, the liquid flows between the central chamber and the edge chambers through the first damping holes to change the center of gravity position of the damping chamber. Each first gate corresponds to a first damping hole in one of the edge chambers, and the first gate is used to control the opening degree of the corresponding first damping hole to move the center of gravity position away from the swing direction of the damping chamber.
[0006] Optionally, the edge compartment includes a first compartment, the first damping orifice is disposed in the first compartment, the first compartment and the center compartment are connected through the first damping orifice, and the liquid can flow between the center compartment and the first compartment through the first damping orifice.
[0007] Optionally, the edge compartment further includes a second compartment, the second compartment including a second damping orifice, the first compartment and the second compartment being connected through the second damping orifice, and the liquid being able to flow between the first compartment and the second compartment via the second damping orifice.
[0008] Optionally, the second compartment includes two of the second damping orifices.
[0009] Optionally, the edge compartment further includes a third compartment, the third compartment including a third damping orifice, the third compartment and the second compartment being connected through the third damping orifice, and the liquid being able to flow between the third compartment and the second compartment via the third damping orifice.
[0010] Optionally, the third compartment includes three of the third damping orifices.
[0011] Optionally, the damping chamber includes multiple sets of edge chambers, each set of edge chambers including two edge chambers, and the multiple sets of edge chambers are arranged around the central chamber.
[0012] Optionally, the vibration damping device further includes a telescopic assembly, which is fixed to the frame, and one end of the rope is fixed to the telescopic assembly.
[0013] Optionally, the vibration damping device further includes a damping rod, the two ends of which are connected to the frame and the damping chamber, respectively.
[0014] This application also provides a vibration reduction method, which uses the vibration reduction device to reduce vibration, including the following steps: when the damping chamber swings, the liquid is allowed to flow between the edge chamber and the center chamber by controlling the opening of each first damping hole so that the center of gravity of the damping chamber moves in a direction away from the swing direction of the damping chamber.
[0015] The beneficial effects of this application are as follows: A frame, ropes, a damping chamber, and two first gates are used. One end of the rope is fixed to the frame. The damping chamber is fixed to the other end of the rope. The damping chamber and the frame are spaced apart. The damping chamber includes a central chamber and two edge chambers. Each edge chamber has a first damping hole connecting to the central chamber. Liquid is placed in the central chamber and the two edge chambers. When the damping chamber swings, the liquid flows through the first damping holes between the central chamber and the edge chambers to change the center of gravity position of the damping chamber. Each first gate corresponds to a first damping hole in one edge chamber. The first gate controls the opening of the corresponding first damping hole to move the center of gravity in a direction opposite to the swing direction of the damping chamber.
[0016] Because the opening of each first damping orifice is controlled by the first gate to move the center of gravity of the damping chamber away from the direction of the damping chamber's swing, the damping chamber can quickly return to a stable state, resulting in better damping effect.
[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the following describes the application in detail with reference to the preferred embodiments and accompanying drawings. Attached Figure Description
[0018] Figure 1 This is a perspective view of a vibration damping device in one embodiment of this application;
[0019] Figure 2 This is a perspective view of the platform in one embodiment of this application;
[0020] Figure 3 This is a perspective view of the damping chamber, the first gate, the second gate, and the third gate in one embodiment of this application;
[0021] Figure 4 This is a top view of the damping chamber, the first gate, the second gate, and the third gate in one embodiment of this application;
[0022] Figure 5 This is a perspective view of the frame in one embodiment of this application;
[0023] Figure 6 This is a perspective view of the first gate, the second gate, and the third gate in one embodiment of this application;
[0024] Figure 7 This is a control block diagram of a vibration damping device in one embodiment of this application;
[0025] Figure 8 In one embodiment of this application, Figure 4 AA-line stepped sectional view;
[0026] Figure 9 This is a perspective view (frame not shown) of a vibration damping device in one embodiment of this application;
[0027] Figure 10 This is a front view of the vibration damping device in one embodiment of this application (the damping chamber is swinging to the right);
[0028] Figure 11 This is a front view of the vibration damping device in one embodiment of this application (the damping chamber is swinging to the left).
[0029] In the attached figures, the following labels are used:
[0030] 1. Vibration damping device
[0031] 10 Framework
[0032] 100 crossbeam
[0033] 11. Rope
[0034] 12 Damped hull
[0035] 120 Central Cabin
[0036] 121 Edge Compartment
[0037] 1210 First Cabin
[0038] 12100 First damping orifice
[0039] 1211 Second Compartment
[0040] 12110 Second Damping Orifice
[0041] 1212 Third Compartment
[0042] 12120 Third damping orifice
[0043] 13 First gate
[0044] 130 First body
[0045] 131 First Electric Cylinder
[0046] 132 First border
[0047] 14 Controller
[0048] 15 Second gate
[0049] 150 Second Body
[0050] 151 Second Electric Cylinder
[0051] 152 Second border
[0052] 16 Third gate
[0053] 160 Third Body
[0054] 161 Third Electric Cylinder
[0055] 162 Third border
[0056] 17 Telescopic components
[0057] 170 hydraulic cylinder
[0058] 171 Slider
[0059] 18 Damping rods
[0060] 2 platforms
[0061] 20 Platform Compartments
[0062] 21 pile legs
[0063] 22 Pile Boots Detailed Implementation
[0064] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.
[0065] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments. To enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0066] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0067] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0068] Please also refer to Figures 1 to 4In this embodiment, a vibration damping device 1 is provided, including a frame 10, a rope 11, a damping chamber 12, and two first gates 13. One end of the rope 11 is fixed to the frame 10. The damping chamber 12 is fixed to the other end of the rope 11. The damping chamber 12 and the frame 10 are spaced apart. The damping chamber 12 includes a central chamber 120 and two edge chambers 121. Each edge chamber 121 is provided with a first damping hole 12100 communicating with the central chamber 120. Liquid is provided in the central chamber 120 and the two edge chambers 121. When the damping chamber 12 swings, the liquid flows between the central chamber 120 and the edge chambers 121 through the first damping holes 12100 to change the position of the center of gravity G of the damping chamber 12. Each first gate 13 is provided with a first damping hole 12100 corresponding to an edge chamber 121. The first gate 13 is used to control the opening of the corresponding first damping hole 12100 so that the center of gravity G moves in a direction away from the swing direction of the damping chamber 12.
[0069] Please also refer to Figure 3 and Figure 4 Since the opening of each first damping hole 12100 is controlled by the first gate 13 so that the center of gravity G of the damping chamber 12 moves away from the swing direction of the damping chamber 12, the damping chamber 12 can quickly return to a stable state, and the damping effect is better.
[0070] Please also refer to Figure 1 and Figure 5 The frame 10 is rectangular and made of steel. The top and bottom of the frame 10 include two crossbeams 100 intersecting in a cross shape. The ropes 11 are preferably steel ropes. There are multiple ropes 11, for example, four. The top ends of the ropes 11 are welded to the top crossbeams 100 of the frame 10. The top crossbeams 100 have slots for the ropes 11 to pass through. The damping chamber 12 is a prism box, for example, an octagonal prism box, and is made of steel. The top of the damping chamber 12 does not have a cover plate. The top of the damping chamber 12 is welded to the bottom of the ropes 11. The damping chamber 12 and the frame 10 are spaced apart, meaning they do not contact each other.
[0071] like Figure 3 As shown, the central compartment 120 is preferably a polygonal prism without a top cover, and its number of edges is the same as that of the damping chamber 12. The top of the central compartment 120 is connected to the bottom of the rope 11. The edge compartments 121 are preferably polygonal prisms without top covers, such as quadrangular prisms with a trapezoidal cross-section. The central compartment 120 is located between and connected to the two edge compartments 121. The first damping hole 12100 is preferably elongated. The first damping hole 12100 is vertically arranged. The liquid is preferably water.
[0072] Please also refer to Figure 3 and Figure 6 The first gate 13 is disposed on the partition of the edge compartment 121. The first gate 13 includes a first body 130, a first electric cylinder 131, and a first frame 132. The two ends of the first electric cylinder 131 are connected to the first body 130 and the first frame 132, respectively. The first body 130 is a rectangular thin plate made of steel. The edge of the first body 130 is sandwiched between the first frame 132 and the partition of the edge compartment 121.
[0073] Please also refer to Figure 3 and Figure 6 The first frame 132 is rectangular and made of steel. The first frame 132 frames the first damping hole 12100. The first frame 132 is fixed to the partition of the edge compartment 121 by welding. The first electric cylinder 131 pushes the first body 130 to slide up and down along the first frame 132 to control the opening degree of the first damping hole 12100. Preferably, there are two first bodies 130 and two first electric cylinders 131, arranged one above the other to achieve opposite opening or closing.
[0074] Please also refer to Figure 6 and Figure 7 The first electric cylinder 131 is fixed to the partition of the edge compartment 121 and is powered by a battery fixed to the edge compartment 121. The first electric cylinder 131 is electrically connected to the controller 14 (e.g., the controller 14 is a PLC, Programmable Logic Controller). Each first electric cylinder 131 is electrically connected to the controller 14. Figure 7 Only one first electric cylinder 131 is shown. The controller 14 is mounted on the frame 10 and spaced apart from the damping chamber 12. For example, the first electric cylinder 131 and the controller 14 are electrically connected wirelessly via Bluetooth or WiFi. The central axis of the first electric cylinder 131 is vertically aligned, and the first electric cylinder 131 drives the first body 130 to move up and down to control the opening degree of the corresponding first damping hole 12100.
[0075] like Figure 4 As shown, optionally, the edge chamber 121 includes a first chamber 1210, and a first damping orifice 12100 is disposed in the first chamber 1210. The first chamber 1210 and the central chamber 120 are connected through the first damping orifice 12100, and liquid can flow between the central chamber 120 and the first chamber 1210 through the first damping orifice 12100. By setting a smaller first chamber 1210 in the edge chamber 121, the amount of liquid entering the central chamber 120 can be controlled more precisely, which facilitates fine adjustment of the position of the center of gravity G of the damping chamber 12 (for example, when the amplitude of the damping chamber 12 is not large, only the opening of the first damping orifice 12100 can be adjusted, and the openings of other damping orifices are not adjusted).
[0076] like Figure 4 As shown, the first compartment 1210 is preferably an uncovered polygonal prism, such as a quadrangular prism with a trapezoidal cross-section. A first damping hole 12100 and a first gate 13 are disposed on the partition of the first compartment 1210. The first compartment 1210 and the central compartment 120 share a partition, and the first damping hole 12100 and the first gate 13 are disposed on the shared partition.
[0077] like Figure 8 As shown, optionally, the edge compartment 121 also includes a second compartment 1211. The second compartment 1211 includes a second damping orifice 12110. The first compartment 1210 and the second compartment 1211 are connected through the second damping orifice 12110, allowing liquid to flow between the first compartment 1210 and the second compartment 1211 via the second damping orifice 12110. The presence of two compartments, the first compartment 1210 and the second compartment 1211, allows for more precise control of the amount of liquid entering the central compartment 120, facilitating fine-tuning of the center of gravity G position of the damping chamber 12 (for example, when the amplitude of the damping chamber 12 is small, only the opening of the first damping orifice 12100 and the second damping orifice 12110 can be adjusted, while the openings of other damping orifices remain unadjusted).
[0078] Please also refer to Figure 4 , Figure 6 and Figure 8 The second compartment 1211 is connected to the first compartment 1210. The edge compartment 121 also includes a second gate 15. The second gate 15 includes a second body 150, a second electric cylinder 151, and a second frame 152. The second body 150 is a rectangular thin plate made of steel. The edge of the second body 150 is sandwiched between the second frame 152 and the partition of the second compartment 1211. The two ends of the second electric cylinder 151 are connected to the second body 150 and the second frame 152, respectively.
[0079] Please also refer to Figure 4 , Figure 6 and Figure 8 The second frame 152 is rectangular and made of steel. The second frame 152 frames the second damping hole 12110. The second frame 152 is fixed to the bulkhead of the second compartment 1211 by welding. The second electric cylinder 151 pushes the second body 150 to slide up and down along the second frame 152 to control the opening degree of the second damping hole 12110. Preferably, there are two second bodies 150 and two electric cylinders 151, arranged one above the other to achieve opposite opening or closing.
[0080] Please also refer to Figure 6 , Figure 7 and Figure 8The second electric cylinder 151 is fixed to the partition of the second compartment 1211 and is powered by a battery fixed to the second compartment 1211. The second electric cylinder 151 is electrically connected to the controller 14. Each second electric cylinder 151 is electrically connected to the controller 14. Figure 7 Only one second electric cylinder 151 is shown. For example, the second electric cylinder 151 and the controller 14 are electrically connected wirelessly via Bluetooth or WiFi. The central axis of the second electric cylinder 151 is vertically arranged, and the second electric cylinder 151 drives the second body 150 to move up and down to control the opening of the corresponding second damping hole 12110.
[0081] like Figure 8 As shown, the second compartment 1211 is preferably an uncovered polygonal prism, such as a quadrangular prism with a trapezoidal cross-section. The second damping hole 12110 is elongated. The second damping hole 12110 and the second gate 15 are disposed on the partition of the second compartment 1211. The second compartment 1211 and the first compartment 1210 share a partition, and the second damping hole 12110 and the second gate 15 are disposed on the shared partition. The partition shared by the first compartment 1210, the second compartment 1211, and the central compartment 120 are different.
[0082] like Figure 8 As shown, optionally, the second compartment 1211 includes two second damping holes 12110. This arrangement allows liquid to pass through both second damping holes 12110, accelerating the flow of liquid between the second compartment 1211 and the first compartment 1210, and accelerating the movement of the center of gravity G of the damping chamber 12 away from the swing direction of the damping chamber 12. The two second damping holes 12110 are spaced apart on a partition shared by the second compartment 1211 and the first compartment 1210.
[0083] like Figure 8 As shown, optionally, the edge compartment 121 also includes a third compartment 1212. The third compartment 1212 includes a third damping orifice 12120. The third compartment 1212 and the second compartment 1211 are connected through the third damping orifice 12120, and the liquid can flow between the third compartment 1212 and the second compartment 1211 through the third damping orifice 12120. By setting three compartments, namely the first compartment 1210, the second compartment 1211, and the third compartment 1212, the amount of liquid entering the central compartment 120 can be further precisely controlled, which facilitates fine adjustment of the position of the center of gravity G of the damping chamber 12 (for example, when the amplitude of the damping chamber 12 is not large, only the opening of the second damping orifice 12110 and the third damping orifice 12120 can be adjusted, while the opening of other damping orifices is not adjusted, so that the liquid only flows between the first compartment 1210, the second compartment 1211, and the third compartment 1212).
[0084] Please also refer to Figure 6 and Figure 8The third compartment 1212 is connected to the second compartment 1211. The edge compartment 121 also includes a third gate 16. The third gate 16 includes a third body 160, a third electric cylinder 161, and a third frame 162. The third body 160 is a rectangular thin plate made of steel. The edge of the third body 160 is sandwiched between the third frame 162 and the partition of the third compartment 1212. The two ends of the third electric cylinder 161 are connected to the third body 160 and the third frame 162, respectively.
[0085] Please also refer to Figure 6 and Figure 8 The third frame 162 is rectangular and made of steel. The third frame 162 frames the third damping hole 12120. The third frame 162 is fixed to the bulkhead of the third compartment 1212 by welding. The third electric cylinder 161 pushes the third body 160 to slide up and down along the third frame 162 to control the opening degree of the third damping hole 12120. Preferably, there are two third electric cylinders 161 and two third bodies 160, arranged one above the other to achieve opposite opening or closing.
[0086] Please also refer to Figure 6 , Figure 7 and Figure 8 The third electric cylinder 161 is fixed to the partition of the third compartment 1212 and is powered by a battery fixed to the third compartment 1212. The third electric cylinder 161 is electrically connected to the controller 14. Each third electric cylinder 161 is electrically connected to the controller 14. Figure 7 Only one third electric cylinder 161 is shown. For example, the third electric cylinder 161 and the controller 14 are electrically connected wirelessly via Bluetooth or WiFi.
[0087] Please also refer to Figure 6 and Figure 8 The central axis of the third electric cylinder 161 is vertically arranged. The third electric cylinder 161 drives the third body 160 to move up and down to control the opening of the corresponding third damping hole 12120. The third compartment 1212 is preferably a multi-faceted prism without a cover, such as a quadrangular prism with a trapezoidal cross-section. The third damping hole 12120 is elongated. The third damping hole 12120 and the third gate 16 are disposed on the partition of the third compartment 1212. The third compartment 1212 and the second compartment 1211 share a partition, and the third damping hole 12120 and the third gate 16 are disposed on the shared partition. The partition shared by the second compartment 1211 and the first compartment 1210 and the third compartment 1212 is different.
[0088] like Figure 8As shown, optionally, the third compartment 1212 includes three third damping holes 12120. Since all three third damping holes 12120 allow liquid to pass through, this accelerates the flow of liquid between the third compartment 1212 and the second compartment 1211, accelerating the movement of the center of gravity G of the damping chamber 12 in a direction away from the swing direction of the damping chamber 12. Two third damping holes 12120 are spaced apart on a partition shared by the third compartment 1212 and the second compartment 1211.
[0089] like Figure 3 As shown, optionally, the damping chamber 12 includes multiple sets of edge chambers 121, each set of edge chambers 121 including two edge chambers 121, and the multiple sets of edge chambers 121 are arranged circumferentially around the central chamber 120. This arrangement allows the damping chamber 12 to quickly return to a stable state when oscillating in different directions. For example, the damping chamber 12 includes four sets of edge chambers 121, which are evenly arranged with reference to the central axis of the central chamber 120. The central chamber 120 is located between the two edge chambers 121 in each set of edge chambers 121. Eight edge chambers 121 are arranged around the central chamber 120, with two face-to-face edge chambers 121 symmetrical about the central axis of the central chamber 120 forming a group. Adjacent edge chambers 121 are interconnected.
[0090] like Figure 1 As shown, optionally, the vibration damping device 1 also includes a telescopic assembly 17, which is fixed to the frame 10, and one end of the rope 11 is fixed to the telescopic assembly 17. This configuration allows adjustment of the center of gravity G of the damping chamber 12 under static conditions using the telescopic assembly 17. The number of telescopic assemblies 17 is the same as the number of ropes 11 and corresponds one-to-one; for example, there are four telescopic assemblies 17. Each telescopic assembly 17 is fixed to one of the two crossbeams 100 arranged in a cross shape at the top of the frame 10.
[0091] Please also refer to Figure 7 and Figure 9 The telescopic assembly 17 includes a hydraulic cylinder 170 and a slider 171. The slider 171 is slidably connected to the frame 10. For example, the slider 171 is engaged with and slidably connected to the top crossbeam 100. The top end of the rope 11 is fixed to the slider 171 by welding. The slider 171 is fixed to the piston rod of the hydraulic cylinder 170 by welding. When the telescopic assembly 17 extends or retracts, it can drive the damping chamber 12 to move. The telescopic assembly 17 is connected to the controller 14 via a cable. Each telescopic assembly 17 is electrically connected to the controller 14. Figure 7 Only one telescopic component 17 is shown. The controller 14 can control the telescopic component 17 to extend or retract.
[0092] like Figure 1As shown, optionally, the vibration damping device 1 also includes a damping rod 18, with both ends of the damping rod 18 connected to the frame 10 and the damping chamber 12, respectively. This configuration can accelerate the dissipation of vibration in the damping chamber 12, allowing the damping chamber 12 to quickly return to a stable state.
[0093] like Figure 1 As shown, the damping rod 18 is composed of a spring and a damping material (such as hydraulic oil or rubber). When vibration occurs, the damping material inside the damping rod 18 absorbs the vibration energy and dissipates it as heat or other forms of energy, thereby reducing the transmission and amplification of vibration. The damping rod 18 is preferably a hydraulic damping rod. The two ends of the damping rod 18 are pivotally connected to the damping chamber 12 and the frame 10, respectively. The number of damping rods 18 is the same as the number of edges of the damping chamber 12, for example, there are 8 damping rods 18. The top end of the damping rod 18 is pivotally connected to the bottom end of the damping chamber 12 (e.g., edge chamber 121). The bottom end of the damping rod 18 is pivotally connected to the bottom of the frame 10.
[0094] Please also refer to Figure 1 and Figure 8 In another embodiment, a vibration reduction method is also provided, which uses the vibration reduction device 1 in the aforementioned embodiment to reduce vibration, including the following steps: when the damping chamber 12 swings, the liquid is allowed to flow between the edge chamber 121 and the center chamber 120 by controlling the opening of each first damping hole 12100 so that the center of gravity G of the damping chamber 12 moves in a direction away from the swing direction of the damping chamber 12.
[0095] like Figure 1 As shown, when it is necessary to adjust the coordinates of the center of gravity G of the damping chamber 12 in the horizontal plane under static conditions (for example, when adjusting the lateral coordinates of the center of gravity G of the damping chamber 12), the coordinates of the center of gravity G of the damping chamber 12 in the horizontal plane can be adjusted by controlling the two telescopic components 17 located on the same top beam 100 to extend and shorten respectively.
[0096] Please also refer to Figure 1 and Figure 8 The vibration reduction method also includes: when the damping chamber 12 swings, the liquid is allowed to flow between the first chamber 1210 and the central chamber 120 by controlling the opening of each first damping hole 12100 so that the center of gravity G of the damping chamber 12 moves in a direction away from the swing direction of the damping chamber 12.
[0097] Please also refer to Figure 1 and Figure 8The vibration reduction method also includes: when the damping chamber 12 swings, the liquid is allowed to flow between the second chamber 1211 and the first chamber 1210 by controlling the opening of each second damping hole 12110 so that the center of gravity G of the damping chamber 12 moves in a direction away from the swing direction of the damping chamber 12.
[0098] Please also refer to Figure 1 and Figure 8 The vibration reduction method also includes: when the damping chamber 12 swings, the liquid is allowed to flow between the third chamber 1212 and the second chamber 1211 by controlling the opening of each third damping hole 12120 so that the center of gravity G of the damping chamber 12 moves in a direction away from the swing direction of the damping chamber 12.
[0099] Please also refer to Figure 8 , Figure 9 and Figure 10 Initially, each of the first compartment 1210, second compartment 1211, and third compartment 1212 contains liquid. When the damping chamber 12 is impacted and swings, for example, when the damping chamber 12 swings to the right, the controller 14 controls the opening of the third damping orifice 12120, the second damping orifice 12110, and the first damping orifice 12100 in the left edge compartment 121 (labeled L1) to decrease, and controls the opening of the third damping orifice 12120, the second damping orifice 12110, and the first damping orifice 12100 in the right edge compartment 121 (labeled R1) to increase, causing the liquid to flow from right to left, thereby causing the center of gravity G of the damping chamber 12 to shift to the left (the direction of the leftward shift of the center of gravity G is referred to...). Figure 10 (The arrow points to the center of gravity G), allowing the damping chamber 12 to quickly return to a stable state.
[0100] Please also refer to Figure 8 , Figure 9 and Figure 11 When the damping chamber 12 swings to the left, the controller 14 controls the opening of the third damping orifice 12120, the second damping orifice 12110, and the first damping orifice 12100 in the right edge chamber 121 to decrease, and controls the opening of the third damping orifice 12120, the second damping orifice 12110, and the first damping orifice 12100 in the left edge chamber 121 to increase, causing the liquid to flow from left to right, thereby causing the center of gravity G of the damping chamber 12 to shift to the right (please refer to [reference] for the direction of the rightward shift of the center of gravity G). Figure 11 (The arrow points to the center of gravity G), allowing the damping chamber 12 to quickly return to a stable state.
[0101] like Figure 3As shown, when the damping chamber 12 swings in other directions, similar control can be applied to the damping orifices in the corresponding edge chamber group. When controlling the liquid flow, it is preferable to control the damping orifices of one set of edge chambers 121 at a time, without controlling the opening of the damping orifices of other edge chambers 121 not in the swing direction. The swing direction of the damping chamber 12 is preferably measured using a gyroscope. The gyroscope is mounted on the frame 10 and electrically connected to the controller 14. The controller 14 controls the raising and lowering of each gate according to the swing direction of the damping chamber 12 measured by the gyroscope to control the opening of the corresponding damping orifice.
[0102] Please also refer to Figure 1 and Figure 2 The vibration damping device 1 is placed entirely within the jack-up platform 2 (hereinafter referred to as platform 2) to reduce vibration. For example, the vibration damping device 1 is placed entirely within the platform compartment 20 at the top of platform 2. The platform compartment 20, the legs 21, and the shoe 22 are connected sequentially from top to bottom. The steps for adjusting the overall center of gravity of platform 2 are as follows:
[0103] 1) Calculate the weight, center of gravity position, and variable load of platform 2 under different working conditions; 2) Calculate environmental loads of different intensities and directions; 3) Establish a multiphysics coupling simulation model of damping chamber 12 and liquid to obtain the optimal liquid configuration and damping orifice opening settings under different loads and directions; 4) When platform 2 encounters external environmental loads and swings, adjust the opening of each gate in damping chamber 12 according to environmental conditions and the weight, center of gravity, and working conditions of platform 2, and control each gate to stop moving when damping chamber 12 achieves the best damping effect.
[0104] The vibration damping device and method provided in the embodiments of this application have been described in detail above. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be construed as a limitation of this application. All equivalent modifications or changes made in accordance with the spirit and technical concept of this application should still be covered by the claims of this application.
Claims
1. A vibration damping device, characterized in that, include: frame; A rope, one end of which is fixed to the frame; A damping chamber is fixed to the other end of the rope. The damping chamber and the frame are spaced apart. The damping chamber includes a central chamber and two edge chambers. Each edge chamber is provided with a first damping hole that connects to the central chamber. Liquid is provided in the central chamber and the two edge chambers. When the damping chamber swings, the liquid flows between the central chamber and the edge chambers through the first damping holes to change the center of gravity position of the damping chamber. as well as Two first gates are provided, each first gate corresponding to a first damping hole of the edge compartment. The first gate is used to control the opening of the corresponding first damping hole so that the center of gravity position moves away from the swing direction of the damping compartment.
2. The vibration damping device according to claim 1, characterized in that, The edge compartment includes a first compartment, the first damping orifice is disposed in the first compartment, the first compartment and the center compartment are connected through the first damping orifice, and the liquid can flow between the center compartment and the first compartment through the first damping orifice.
3. The vibration damping device according to claim 2, characterized in that, The edge compartment further includes a second compartment, which includes a second damping orifice. The first compartment and the second compartment are connected through the second damping orifice, and the liquid can flow between the first compartment and the second compartment through the second damping orifice.
4. The vibration damping device according to claim 3, characterized in that, The second compartment includes two second damping orifices.
5. The vibration damping device according to claim 3, characterized in that, The edge compartment also includes a third compartment, which includes a third damping orifice. The third compartment and the second compartment are connected through the third damping orifice, and the liquid can flow between the third compartment and the second compartment through the third damping orifice.
6. The vibration damping device according to claim 5, characterized in that, The third compartment includes three of the third damping orifices.
7. The vibration damping device according to claim 1, characterized in that, The damping chamber includes multiple sets of edge chambers, each set of edge chambers includes two edge chambers, and the multiple sets of edge chambers are arranged around the central chamber.
8. The vibration damping device according to claim 1, characterized in that, It also includes a telescopic assembly, which is fixed to the frame, and one end of the rope is fixed to the telescopic assembly.
9. The vibration damping device according to claim 1, characterized in that, It also includes a damping rod, the two ends of which are connected to the frame and the damping chamber, respectively.
10. A vibration reduction method, wherein the vibration reduction device according to any one of claims 1-9 is used for vibration reduction, characterized in that, Includes the following steps: When the damping chamber swings, the opening of each first damping orifice is controlled to allow the liquid to flow between the edge chamber and the center chamber, so that the center of gravity of the damping chamber moves in a direction away from the swing direction of the damping chamber.