Damping-adjustable elastic tuning track shock isolation device and shock isolation method

Abstract

The invention discloses a damping-adjustable elastic tuning track shock isolation device and a shock isolation method in the technical field of data cabinet shock isolation, each of two damping active control assemblies in the shock isolation device comprises a damping oil liquid loop, a regulating valve body and a damping piston rod, the regulating valve body is arranged on the damping oil liquid loop, and the damping piston rod is arranged on the damping oil liquid loop. The regulating valve body can change the flowing sectional area of the damping oil liquid, and the damping piston rod penetrates through the damping oil liquid loop and is in sealed connection with the inner wall of the damping oil liquid loop; in the first damping active control assembly, when a bottom plate assembly drives a damping piston rod to reciprocate in the first direction, damping oil flows in a damping oil loop; in the second damping active control assembly, when the bottom plate assembly drives the damping oil liquid loop to reciprocate in the second direction, the damping oil liquid flows in the damping oil liquid loop. An active seismic isolation structure is additionally arranged, so that the active seismic isolation device can adapt to different seismic environments, and corresponding seismic isolation adjustment is conducted.

Description

Technical Field

[0001] The invention relates to the technical field of data cabinet seismic isolation, in particular to a design of a damping-adjustable elastic tuning track seismic isolation device and a seismic isolation method. Background Art

[0002] Earthquake damage is a very strong sudden natural disaster, which leads to communication interruption, data loss and other problems. In order to prevent cabinets and other equipment from being affected by earthquakes, it is necessary to install seismic isolation devices or shock absorbing devices on the equipment. The vibration reduction technology mainly absorbs the structural vibration energy through high-precision air damping springs to reduce the vertical energy transmitted to the floating support of the data cabinet. The seismic isolation technology is to form a seismic isolation layer by setting a seismic isolation device between the foundation and the superstructure, and use the seismic isolation device to isolate or dissipate the seismic energy to reduce the transmission of seismic energy to the upper structure, so as to reduce the seismic response of the superstructure and improve the seismic resistance, such as lead rubber seismic isolation bearings, friction pendulum seismic isolation bearings, etc. In addition, the seismic energy is huge and the frequency is low, which requires the data cabinet seismic isolation layer to have a smaller stiffness and higher requirements for the layout and stability of the seismic isolation device. However, the existing seismic isolation technology such as laminated rubber for engineering structures cannot be applied to such light structures.

[0003] At present, in order to avoid the damage caused by earthquake disasters to data and communication cabinets, the traditional cabinet seismic design mainly adopts the method of increasing the stiffness of components and the strength of the equipment itself, so that the structure can withstand large earthquake acceleration to prevent structural damage. This method can generally ensure that the cabinet fixed to the floor does not fall over, but the equipment in the cabinet will be subjected to a greater earthquake response acceleration, which will cause the cabinet to deform and the internal electronic devices to fail. For large-scale engineering structures such as building structures and long-span bridges, seismic isolation technologies such as lead rubber isolation bearings and friction pendulum isolation bearings have been widely used on them. However, data cabinets (including internal equipment) are light in overall weight and small in foundation size, requiring the seismic isolation layer to have a smaller stiffness, and requiring higher requirements for the layout and stability of the seismic isolation device, making it impossible to apply existing seismic isolation technologies such as laminated rubber to such light structures.

[0004] In addition, existing seismic isolation devices can only use elastic damping force to dissipate seismic energy. However, the energy size and direction of seismic waves at the cabinet installation location are different. How to adjust the seismic isolation according to the seismic wave environment of different cabinets is an important research direction. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a damping-adjustable elastic tuning track seismic isolation device and a seismic isolation method.

[0006] The technical solution of the present invention is as follows:

[0007] A damping adjustable elastic tuning track seismic isolation device comprises a bottom plate assembly connected to a base, a top plate assembly connected to a cabinet, a seismic isolation assembly is arranged between the bottom plate assembly and the top plate assembly, and is characterized in that the seismic isolation assembly comprises a first damping active control assembly and a second damping active control assembly,

[0008] The first damping active control component and the second damping active control component each include a damping oil circuit filled with damping oil, a regulating valve body, and a damping piston rod, wherein the regulating valve body is disposed on the damping oil circuit and connected to an adjusting motor, so that the regulating valve body changes a flow cross-sectional area of ​​the damping oil under the drive of the adjusting motor, and the damping piston rod passes through the damping oil circuit and is sealed and connected to an inner wall of the damping oil circuit;

[0009] In the first damping active control assembly, the damping piston rod is connected to the bottom plate assembly, and the damping oil circuit is connected to the top plate assembly, so that when the bottom plate assembly drives the damping piston rod to reciprocate in the first direction, the damping oil flows in the damping oil circuit;

[0010] In the second damping active control component, the damping oil circuit is connected to the base plate component, and the damping piston rod is connected to the top plate component, so that when the base plate component drives the damping oil circuit to reciprocate in the second direction, the damping oil flows in the damping oil circuit.

[0011] The present invention according to the above scheme is characterized in that the seismic isolation assembly also includes multiple sensors, and the regulating motor and the multiple sensors are connected to a controller, so that the controller controls the regulating motor to change the rotation angle of the regulating valve body after receiving signals from the multiple sensors.

[0012] The present invention according to the above scheme is characterized in that, in the damping oil circuit, the two ends of the piston sleeve are respectively connected to the two open ends of the regulating valve through angle sleeves, and the damping piston rod passes through the piston sleeve and is sealed and connected to the inner wall of the piston sleeve, so that when the damping piston rod and the piston sleeve slide relative to each other, the damping oil in the damping oil circuit is driven to flow.

[0013] Furthermore, the regulating valve body is cylindrical, the regulating valve seat is provided with a accommodating cavity for accommodating the regulating valve body, the regulating valve seat is provided with a pipe through hole, the regulating valve body is provided with a rotating part through hole, and the central axis of the rotating part through hole and the central axis of the pipe through hole are both perpendicular to the central axis of the regulating valve body: when the central axis of the rotating part through hole coincides with the central axis of the pipe through hole, the flow cross-sectional area of ​​the damping oil in the damping oil circuit is the largest; when the central axis of the rotating part through hole is perpendicular to the central axis of the pipe through hole, the flow cross-sectional area of ​​the damping oil in the damping oil circuit is the smallest.

[0014] The present invention according to the above scheme is characterized in that the seismic isolation assembly further includes a passive seismic isolation assembly, which includes a middle frame, a plurality of first damping pulleys and a plurality of second damping pulleys installed on the middle frame, a lower tuning track installed on the upper side of the bottom plate assembly, and an upper tuning track installed on the lower side of the top plate assembly:

[0015] The central axis of the first damping pulley and the central axis of the second damping pulley are perpendicular to each other;

[0016] The bottom of the first damping pulley protrudes from the middle frame and abuts against the upper surface of the lower tuning rail, and the top of the second damping pulley protrudes from the middle frame and abuts against the lower surface of the upper tuning rail, so that the first damping pulley and the second damping pulley consume seismic energy through damping force during rotation.

[0017] Furthermore, the upper surface of the lower tuning track and the lower surface of the upper tuning track are both formed of arc surfaces with the same curvature;

[0018] Alternatively, the upper surface of the lower tuning track and the lower surface of the upper tuning track are both formed by sequentially connecting a plurality of arc surfaces with different curvatures.

[0019] Furthermore, the passive seismic isolation assembly also includes two anti-roll members arranged on opposite sides of the second direction, the upper ends of the anti-roll members are fixedly connected to the top plate assembly, and the lower ends are clamped with the middle frame, so that the anti-roll members slide along the middle frame in the first direction under the drive of the top plate assembly.

[0020] Furthermore, the first damping pulley and the second damping pulley both include a central shaft and a pulley member, the central shaft is fixed on the middle frame, the pulley member is sleeved on the central shaft, and a damping friction member is provided between the pulley member and the central shaft, and the damping friction force between the damping friction member and the pulley member is used to consume seismic energy.

[0021] On the other hand, a seismic isolation method of an elastically tuned track seismic isolation device with adjustable damping is characterized in that, the elastically tuned track seismic isolation device with adjustable damping is applied, and during an earthquake, the top plate assembly of the elastically tuned track seismic isolation device with adjustable damping moves relative to the bottom plate assembly in a first direction and / or a second direction, and consumes seismic energy through an active damping control assembly:

[0022] S1, detecting the acceleration when an earthquake occurs through multiple sensors, and sending the detection results to the controller;

[0023] S2, the controller determines the direction and acceleration of the seismic wave when the earthquake occurs, and uses the hyperbolic tangent model to simulate the motion state of the damping oil circuit and the regulating valve body in the elastic tuned track isolation device with adjustable damping, and determines the rotation angle of the regulating valve body;

[0024] S3. Based on the calculated rotation angle of the regulating valve body, the controller drives the regulating motor to move and drives the regulating valve body to rotate to the required angle, thereby changing the flow cross-sectional area of ​​the damping oil in the damping oil circuit, and actively consumes the seismic wave energy through the flow of the damping oil in the damping oil circuit.

[0025] The present invention according to the above scheme is characterized in that in the damping adjustable elastic tuned track seismic isolation device, the passive seismic isolation component also passively consumes seismic wave energy when an earthquake occurs:

[0026] When the top plate assembly moves relative to the bottom plate assembly in the first direction and / or the second direction, the middle frame in the damping-adjustable elastic tuning track seismic isolation device passively consumes seismic wave energy through the damping friction between the first damping pulley and the lower tuning track and / or the damping friction between the second damping pulley and the upper tuning track;

[0027] At the same time, when the first damping pulley and / or the second damping pulley rotates, the damping friction between the pulley member and the central axis passively consumes the seismic wave energy.

[0028] The present invention according to the above scheme has the following beneficial effects:

[0029] The present invention forms a middle frame by connecting four connecting rods end to end in sequence, and abuts against four upper tuning rails through four first damping pulleys, and abuts against four lower tuning rails through four second damping pulleys, thereby realizing movement in any direction between the top plate assembly and the bottom plate assembly, and through the damping contact between each damping pulley and the corresponding adjustment rail, and the damping connection between the internal pulley parts of each damping pulley and the central axis, it is conducive to forming a structure that passively consumes seismic wave energy through elastic damping; in addition, the design of the arc-shaped contact surface of each tuning rail in the present invention can convert the seismic force into kinetic energy and gravitational potential energy, and dissipate hysteresis energy through friction during the sliding of the pulley, and can also provide a force for the seismic isolation device to return to its original position after an earthquake.

[0030] The present invention sets up two damping oil circuits and controls the flow cross-sectional area of ​​the damping oil circuits through corresponding regulating motors and regulating valve bodies, so as to make targeted adjustments according to different earthquakes to increase the adaptability of the seismic isolation device; at the same time, through the cooperation between the active seismic isolation device and the passive seismic isolation device, the damping seismic isolation effect of the motion can be further increased while increasing the active adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural exploded diagram of the present invention;

[0033] Figure 3 This is a schematic diagram of the present invention after removing the bottom plate assembly and the top plate assembly;

[0034] Figure 4 It is a schematic diagram of the passive seismic isolation component and the active damping control component of the present invention;

[0035] Figure 5 for Figure 4 Exploded diagram of

[0036] Figure 6 is a schematic diagram of the position of the pulley block in the present invention;

[0037] Figure 7 It is a structural exploded view of the position of the pulley block in the present invention;

[0038] Figure 8 It is a structural exploded view of the first damping pulley in the present invention;

[0039] Fig. 9 is a schematic diagram of the first lower tuning track in the present invention;

[0040] Fig.10 is a schematic diagram of a first upper tuning track in the present invention;

[0041] Fig.11 It is a schematic diagram of the connection between the active damping control component and the passive seismic isolation component in the present invention;

[0042] Fig.12 It is a schematic diagram of the connection between the first damping active control component and the pulley connecting rod in the present invention;

[0043] Fig.13 It is a cross-sectional view of the connection between the first damping active control component and the pulley connecting rod in the present invention;

[0044] Fig.14 It is a schematic diagram of the connection between the second damping active control component and the sliding auxiliary rod in the present invention;

[0045] Fig.15 It is a cross-sectional view of the connection between the second damping active control component and the sliding auxiliary rod in the present invention.

[0046] In the drawings, the reference numerals are:

[0047] 101, bottom plate; 102, top plate; 110, bottom plate assembly; 111, lower support plate; 120, top plate assembly; 121, upper support plate;

[0048] 200. Passive seismic isolation components;

[0049] 210, pulley connecting rod; 211, first pulley connecting rod; 2111, first pulley bracket; 2112, pulley slot; 2113, pulley bracket, 212, second pulley connecting rod; 2121, second pulley bracket;

[0050] 220, sliding auxiliary rod; 221, first sliding auxiliary rod; 2211, first auxiliary rod slide groove; 222, second sliding auxiliary rod; 2221, second auxiliary rod slide groove;

[0051] 230, pulley block; 231, first damping pulley; 2311, central axis; 2312, damping friction member; 23121, opening; 2313, pulley member; 2314, gasket; 2315, fastener; 232, second damping pulley;

[0052] 240, anti-tilt slider; 241, first anti-tilt member; 2411, first anti-tilt slider; 242, second anti-tilt member; 2421, second anti-tilt slider;

[0053] 251, first lower tuning track; 2511, lower track arc surface; 252, second lower tuning track; 253, third lower tuning track; 254, fourth lower tuning track;

[0054] 261, first upper tuning track; 2311, upper track arc surface; 262, second upper tuning track; 263, third upper tuning track; 264, fourth upper tuning track;

[0055] 300, damping active control component;

[0056] 311, first support seat; 3111, first support slider; 312, first damping slider; 313, first damping piston rod; 3131, first piston baffle; 3132, first sealing ring; 314, first connecting piece; 315, first piston sleeve; 316, first corner sleeve; 317, first regulating valve seat; 3171, first bearing; 318, first regulating motor; 3181, first regulating valve body; 319, first connecting plate;

[0057] 321. Second support seat; 322. Second damping piston rod; 3221. Second piston baffle; 3222. Second sealing ring; 323. Second connecting piece; 324. Second piston sleeve; 325. Second corner sleeve; 326. Second corner sleeve member; 3261. Second bearing; 327. Second regulating motor; 3271. Second regulating valve body; 328. Second connecting plate. DETAILED DESCRIPTION

[0058] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0059] like Figures 1 to 15 As shown, in order to solve the problem that the existing seismic isolation devices can only passively consume seismic wave energy by means of elastic restoring force, restoring force of gravity component, etc. when an earthquake occurs, and reduce the influence of seismic wave energy on the equipment above the seismic isolation device, and it cannot adjust the consumption capacity to adapt to earthquakes of different degrees, the present invention proposes a damping adjustable elastic tuned track seismic isolation device, which can detect the direction of seismic energy and the magnitude of acceleration, and adjust the damping size in a targeted manner, thereby realizing effective consumption of seismic energy and ensuring the safety of the equipment above the seismic isolation device.

[0060] The elastic tuned track isolation device with adjustable damping is used for isolation of data cabinets and precision instruments in high-tech, finance, communications, military, energy, cultural relics and government fields. It includes a frame part and a motion damping part, wherein the frame part is mainly used for installation and support of the cabinet, and the motion damping part can be used for seismic wave energy consumption and can support the cabinet at the same time.

[0061] 1. Rack Part

[0062] like Figures 1 to 3 As shown, the rack part includes a bottom plate assembly 110 and a top plate assembly 120, wherein the bottom plate 101 in the bottom plate assembly 110 is connected to the base for fixing the cabinet; the top plate 102 in the top plate assembly 120 is connected to the cabinet for achieving motion buffering of the cabinet through relative movement with the bottom plate assembly 110.

[0063] A lower support plate 111 is also provided on the bottom plate assembly 110, through which the bottom plate assembly 110 and the motion damping part can be connected; an upper support plate 121 is provided on the lower side of the top plate assembly 120, through which the top plate assembly 120 and the motion damping part can be connected. The lower support plate 111 in the present invention includes two parallel and spaced apart, and the upper support plate 121 also includes two parallel and spaced apart, and the extension direction of the upper support plate 121 is perpendicular to the extension direction of the lower support plate 111. The orthogonal setting can ensure that when the top plate assembly 120 and the cabinet move in any direction, they can be decomposed into the two mutually perpendicular directions, and the center of gravity of the cabinet is known to be within the support range of the entire seismic isolation device; in addition, the spacing of the lower support plates 111 and the spacing of the upper support plates 121 can provide space for the installation and movement of the motion damping part.

[0064] 2. Motion damping part

[0065] like Figures 2 to 15 As shown, the motion damping part includes a seismic isolation component, which is located between the top plate component 120 and the bottom plate component 110, and connects the top plate component 120 and the bottom plate component 110, and can realize relative movement and support between the top plate component 120 and the bottom plate component 110. The seismic isolation component includes a passive seismic isolation component 200 and a damping active control component 300, wherein the passive seismic isolation component 200 is used to passively consume the seismic wave energy by elastic damping when the cabinet and other equipment are affected by the seismic wave energy and move when an earthquake occurs, so as to reduce the influence of the seismic wave energy on the cabinet; the damping active control component 300 is used to actively adjust the size of the liquid damping based on the size and direction of the seismic wave energy when an earthquake occurs, and then perform active seismic isolation on the basis of passive seismic isolation to protect the cabinet from damage in the earthquake.

[0066] 1. Passive seismic isolation components

[0067] like Figures 2 to 10 As shown, the passive seismic isolation assembly 200 in the present invention includes a middle frame, a plurality of pulley blocks installed on the middle frame, a lower tuning track installed on the upper side of the bottom plate assembly 110, and an upper tuning track installed on the lower side of the top plate assembly 120. The middle frame is connected to the top plate assembly 120 and the bottom plate assembly 110 through the pulley block, so that the middle frame (bottom plate assembly 110) and the top plate assembly 120 can move relative to each other in a first direction (the X-axis direction in the figure, the same below), and the bottom plate assembly 110 and the middle frame can move relative to each other in a second direction (the Y-axis direction in the figure, the same below), thereby enabling the cabinet and the base to be displaced in any horizontal direction during an earthquake.

[0068] The middle frame is a hollow frame structure, which includes 4 connecting rods connected end to end, specifically including two opposite and spaced pulley connecting rods 210 (first pulley connecting rod 211, second pulley connecting rod 212), two opposite and spaced sliding auxiliary rods 220 (first sliding auxiliary rod 221, second sliding auxiliary rod 222). In order to ensure the convenience of structural installation, the pulley blocks in the present invention are all installed on the pulley connecting rod 210, specifically: both ends of the first pulley connecting rod 211 and both ends of the second pulley connecting rod 212 are installed with pulley blocks 230, that is, four pulley blocks 230 are formed to connect with the top plate assembly 120 and the bottom plate assembly 110.

[0069] In order to realize sliding in different directions between the middle frame and the top plate assembly 120 and the bottom plate assembly 110, each pulley group 230 in the present invention includes a first damping pulley 231 and a second damping pulley 232, and the central axis of the first damping pulley 231 and the central axis of the second damping pulley 232 are perpendicular to each other, the bottom of the second damping pulley 232 protrudes from the middle frame and abuts against the upper surface of the lower tuning track, and the top of the first damping pulley 231 protrudes from the middle frame and abuts against the lower surface of the upper tuning track, so that the first damping pulley 231 and the second damping pulley 232 consume seismic energy through damping force during rotation.

[0070] The first damping pulley 231 has a similar structure to the second damping pulley 232. Figure 8 Taking the first damping pulley 231 shown as an example, the first damping pulley 231 and the second damping pulley 232 both include a central shaft 2311 and a pulley member 2313. The central shaft 2311 is mounted on the middle frame, and the pulley member 2313 is sleeved on the central shaft 2311. A damping friction member 2312 is provided between the pulley member 2313 and the central shaft 2311. During the movement, relative rotation occurs between the pulley member 2313 and the damping friction member 2312, so that the damping friction force between the damping friction member 2312 and the pulley member 2313 is used to consume seismic energy. In a preferred embodiment, an axially extending opening 23121 is provided on the damping friction member 2312, which can facilitate the installation of the pulley member 2313 after the central shaft 2311 passes through. The central shaft 2311 is made of a special friction damping material, such as Figure 8 As shown, by changing the damping force generated by the friction material, it plays a role in dissipating energy in the reciprocating motion of the double slide rails, thereby reducing the transmission of horizontal seismic energy to the upper cabinet and protecting the cabinet from damage.

[0071] Preferably, the first damping pulley 231 further includes a gasket 2314 and a fastener 2315, and the fastener 2315 is connected to the central shaft 2311 after passing through the gasket 2314, so that the central shaft 2311 can be installed on the middle frame, so that a gap for clamping the middle frame is formed between the gasket 2314 and the pulley member 2313. In addition, the sliding link 210 is provided with a pulley frame 2113 for installing the first damping pulley 231 and a pulley slot 2112 for installing the second damping pulley 232, wherein the pulley frame 2113 is protruding from the upper side of the pulley link 210, and the pulley slot 2112 is located in the middle of the pulley link 210.

[0072] The lower tuning track extends along the second direction, and the upper tuning track extends along the first direction, so that the two are perpendicular to each other, and the top plate assembly 120 can slide in the first direction relative to the middle frame, and the middle frame can slide in the second direction relative to the bottom plate assembly 110. The upper tuning track is installed on the upper support plate 121, and the lower tuning track is installed on the lower support plate 111, so that the bottom plate assembly 110 can reliably support the top plate assembly 120.

[0073] In the present invention, the lower tuning track includes a first lower tuning track 251, a second lower tuning track 252, a third lower tuning track 253, and a fourth lower tuning track 254, and each lower tuning track corresponds to the position of the second damping pulley 232 in a pulley group 230; the upper tuning track includes a first upper tuning track 261, a second upper tuning track 262, a third upper tuning track 263, and a fourth upper tuning track 264, and each upper tuning track corresponds to the position of the first damping pulley 231 in a pulley group 230. Specifically, the first lower tuning rail 251 and the second lower tuning rail 252 are installed on the same straight line, the third lower tuning rail 253 and the fourth lower tuning rail 254 are installed on the same straight line, and the first lower tuning rail 251, the second lower tuning rail 252 and the third lower tuning rail 253, the fourth lower tuning rail 254 are spaced apart from each other; the first upper tuning rail 261 and the second upper tuning rail 262 are installed on the same straight line, the third upper tuning rail 263 and the fourth upper tuning rail 264 are installed on the same straight line, and the first upper tuning rail 261, the second upper tuning rail 262 and the third upper tuning rail 263, the fourth upper tuning rail 264 are installed on the same straight line.

[0074] The upper surface of the lower tuning track and the lower surface of the upper tuning track are both arc surfaces. On the one hand, the seismic energy can be converted into the kinetic energy and gravitational potential energy of the seismic isolation device to consume the seismic energy; on the other hand, the arc surface design can provide the seismic isolation device with a restoring force after an earthquake (or it can facilitate manual reset of the cabinet after an earthquake). Specifically, in one embodiment, the upper surface of the lower tuning track and the lower surface of the upper tuning track are both arc surfaces with consistent curvature, so that the tangential component of the cabinet's gravity on the surface of the tuning track can provide power for the cabinet to reset; in another embodiment, the upper surface of the lower tuning track and the lower surface of the upper tuning track can also be formed by connecting a plurality of arc surfaces with different curvatures in sequence, and in this embodiment, the tuning track has the largest curvature at the lowest point of the arc surface (the upper tuning track refers to the highest point). When the tuning track provides power for the cabinet to reset, the cabinet can also move at different distances to both sides at the midpoint, and the reset force is different, which can provide more stable power for the cabinet.

[0075] The passive seismic isolation assembly 200 further includes two anti-tilt members arranged on opposite sides of the second direction, the upper ends of the anti-tilt members are fixedly connected to the top plate assembly 120, and the lower ends thereof are engaged with the middle frame, so that the anti-tilt members slide along the middle frame in the first direction under the drive of the top plate assembly 120. Correspondingly, a secondary rod slide groove is arranged on the outer side of the lower surface of the middle frame, and an anti-tilt slider 240 protruding inward is arranged at the lower end of the anti-tilt member, and the anti-tilt slider 240 extends into the secondary rod slide groove, so that the anti-tilt slider 240 is engaged with the middle frame to prevent the top plate assembly 120 from tilting to the other side of the second direction.

[0076] Specifically, in the present invention, a first sub-rod slot 2211 is provided at the bottom corner of the first sliding sub-rod 221, a second sub-rod slot 2221 is provided at the bottom corner of the second sliding sub-rod 222, and the first sub-rod slot 2211 and the second sub-rod slot 2221 are arranged back to back. A first anti-roll piece 241 is installed on the first sliding sub-rod 221, and a first anti-roll slider 2411 at the bottom of the first anti-roll piece 241 is arranged on the first sub-rod slide groove 2211; a second anti-roll piece 242 is installed on the second sliding sub-rod 222, and a second anti-roll slider 2421 on the second anti-roll piece 242 is arranged on the second sub-rod slide groove 2221, and the top plate assembly 120 is installed on the first anti-roll piece 241 and the second anti-roll piece 242, which can not only realize the connection between the top plate assembly 120 and the middle frame, but also ensure that the top plate assembly 120 will not exceed the supporting range of the bottom plate assembly 110 when it moves relative to the bottom plate assembly 110, thereby avoiding the overturning of the top plate assembly 120 and the cabinet above it, and at the same time can also avoid.

[0077] In the present invention, the passive seismic isolation assembly 100 is obtained by 8 damping pulleys and 8 tuning tracks distributed in an orthogonal manner between the top plate assembly 120 and the bottom plate assembly 110. It can realize sliding in any direction in the plane, and consume seismic energy through the damping force between the tuning track and the damping pulley and the damping force between the pulley and the pulley shaft. Finally, the seismic wave energy is consumed through the damping force, thereby reducing the damage to the equipment in the cabinet during the earthquake.

[0078] Through the design of the above-mentioned passive seismic isolation component, the present invention can utilize the damping friction between the internal pulley member 2313 of the damping pulley and the central axis 2311, and the damping friction between the damping pulley and the tuning track to achieve energy consumption during an earthquake. The seismic force can also be converted into kinetic energy and gravitational potential energy through the arc surface design of the tuning track, and hysteresis energy consumption can be formed during the sliding process of the damping pulley, thereby achieving the purpose of shock absorption and the seismic isolation performance of the friction pendulum, and at the same time realizing the automatic reset function of the seismic isolation device after an earthquake.

[0079] 2. Active damping control components

[0080] Traditional cabinet isolation devices consume earthquake energy through energy-consuming devices to protect the cabinet and the electronic equipment inside the cabinet from damage. This method is passive isolation, and its parameters such as natural frequency and damping force are all determined. It is difficult to exert the isolation effect when facing uncertain earthquake acceleration. Therefore, the present invention adds a damping active control component on the basis of the traditional passive isolation component.

[0081] like Figures 2 to 5 , Figures 11 to 15 As shown, the damping active control component 300 includes a first damping active control component and a second damping active control component. The first damping active control component is used to provide active damping seismic isolation for the relative movement of the top plate component 120 relative to the bottom plate component 110 in a first direction, and the second damping active control component is used to provide active damping seismic isolation for the relative movement of the top plate component 120 relative to the bottom plate component 110 in a second direction.

[0082] The first damping active control component and the second damping active control component both include a damping oil circuit, a regulating valve body, and a damping piston rod. The damping oil circuit is filled with damping oil for consuming seismic energy (hydraulic damping force is generated during the flow of the oil). The regulating valve body is arranged on the damping oil circuit and connected to the regulating motor, so that the regulating valve body changes the flow cross-sectional area of ​​the damping oil under the drive of the regulating motor. The damping piston rod passes through the damping oil circuit and is sealed and connected to the inner wall of the damping oil circuit.

[0083] The regulating valve body is cylindrical, and a accommodating cavity for accommodating the regulating valve body is provided in the regulating valve seat. A pipe through-hole for the damping oil to pass through is provided on the regulating valve seat. A rotating part through-hole for the damping oil to pass through is provided on the regulating valve body, and the central axis of the rotating part through-hole and the central axis of the pipe through-hole are both perpendicular to the central axis of the regulating valve body: when the central axis of the rotating part through-hole coincides with the central axis of the pipe through-hole, the flow cross-sectional area of ​​the damping oil in the damping oil circuit is the largest, and at this time, the damping force provided by the damping oil is the largest, so that the damping piston rod can be kept in a stationary state in the damping oil circuit.

[0084] In the first damping active control component, the first damping piston rod 313 is connected to the base plate component 110, and the first damping oil circuit is connected to the top plate component 120, so that when the base plate component 110 drives the first damping piston rod 313 to reciprocate in the first direction, the first damping oil circuit is relatively limited by the top plate component 120, so that the first damping piston rod 313 and the first damping oil circuit slide relative to each other, and then the damping oil flows in the first damping oil circuit.

[0085] like Figures 11 to 13 As shown, the two ends of the first piston sleeve 315 in the first damping oil circuit are respectively connected to the two open ends of the first regulating valve through the first angle sleeve 316, and the first damping piston rod 313 passes through the first piston sleeve 315 and is sealed with the inner wall of the first piston sleeve 315, so that the damping oil in the first damping oil circuit is driven to flow when the first damping piston rod 313 and the first piston sleeve 315 slide relative to each other. The first regulating valve includes a first regulating valve seat 317 and a first regulating valve body 3181, the first regulating valve body 3181 is located in the first regulating valve seat 317 and the first regulating valve body 3181 is connected to the first regulating motor 318. Preferably, a first bearing 3171 and a first pipe sealing ring are provided between the first regulating valve body 3181 and the first regulating valve seat 317, so that the rotation and sealing connection between the first regulating valve body 3181 and the first regulating valve seat 317 can be realized.

[0086] In order to achieve the flow of damping oil as the top plate assembly and the bottom plate assembly move relative to each other in the first direction, a first piston baffle 3131 is provided on the first damping piston rod 313 of the present invention. The first piston baffle 3131 is sealed to the inner wall of the first piston sleeve 315 through a first sealing ring 3132, so that when the first damping piston rod 313 moves in the first direction, the damping oil in the first damping oil circuit can be driven to flow through the first piston baffle 3131 to generate a hydraulic damping force.

[0087] In order to realize that the first damping piston rod 313 can move along with the relative movement between the bottom plate assembly and the top plate assembly in the first direction, the first damping active control assembly in the present invention also includes a first damping slider 312 and a first support seat 311. The first damping oil circuit and the first damping slider 312 are both fixedly connected to the top plate assembly 120. The first support seat 311 is fixed to the bottom plate assembly. Both ends of the first damping piston rod 313 pass through the corresponding first damping slider 312 and abut against the first support seat 311. The first support seat 311 is used to limit the movement of the first damping piston rod 313 in the first direction. The first damping slider 312 can connect the first piston sleeve 315 with the top plate assembly and also play a role of directional sliding. The first damping oil circuit (specifically, the end of the first piston sleeve 315) is connected to the first connecting member 314. The upper side of the first damping slider 312 and the upper side of the first connecting member 314 are both connected to the first connecting plate 319 and fixed to the top plate assembly through the first connecting plate 319.

[0088] Preferably, a protruding first supporting slider 3111 is provided on the outer side of the first supporting seat 311, and a pulley bracket for limiting the first supporting slider 3111 is provided on the middle frame. Specifically, a first pulley bracket 2111 is provided on the inner side of the first pulley connecting rod 211, and a second pulley bracket 2121 is provided on the inner side of the second pulley connecting rod 212. Both ends of the first supporting slider 3111 are respectively mounted on the first pulley bracket 2111 and the second pulley bracket 2121, and slide along the second direction, thereby providing a limiting force for the first damping piston rod 313 and providing a sliding range of the first damping active control component in the second direction.

[0089] In the second damping active control component, the second damping oil circuit is connected to the base plate component 110, and the second damping piston rod 322 is connected to the middle frame, so that when the base plate component 110 drives the second damping oil circuit to reciprocate in the second direction, the first damping piston rod 322 is limited by the middle frame so that the second damping piston rod 322 and the second damping oil circuit slide relative to each other, and then the damping oil flows in the second damping oil circuit.

[0090] like Fig.11 , Fig.14 , Fig.15As shown, the two ends of the second piston sleeve 324 in the second damping oil circuit are respectively connected to the two open ends of the second regulating valve through the second angle sleeve 325, and the second damping piston rod 322 passes through the second piston sleeve 324 and is sealed with the inner wall of the second piston sleeve 324, so that the damping oil in the second damping oil circuit is driven to flow when the second damping piston rod 322 and the second piston sleeve 324 slide relative to each other. The second regulating valve includes a second regulating valve seat 326 and a second regulating valve body 3271, the second regulating valve body 3271 is located in the second regulating valve seat 326 and the second regulating valve body 3271 is connected to the second motor 327. Preferably, a second bearing 3261 and a second pipe sealing ring are provided between the second regulating valve body 3271 and the second regulating valve seat 326, so that the rotation and sealing connection between the second regulating valve body 3271 and the second regulating valve seat 326 can be realized.

[0091] In order to realize that the damping oil can flow along with the relative movement between the top plate assembly 120 and the bottom plate assembly 110 in the second direction, the second damping piston rod 322 in the present invention is provided with a second piston baffle 3221, and the second piston baffle 3221 is sealedly connected to the inner wall of the second piston sleeve 324 through a second sealing ring 3222. When the second damping piston rod 322 moves in the second direction, the damping oil in the second damping oil circuit can be driven to flow through the second piston baffle 3221 to generate a hydraulic damping force.

[0092] In order to realize that the second damping piston rod 322 can move along with the relative movement between the middle frame and the base plate assembly 110 in the second direction, the second damping active control assembly in the present invention also includes a second support seat 321, the second damping oil circuit and the second support seat 321 are both fixedly connected to the base plate assembly 110, and the two ends of the second damping piston rod 322 pass through the corresponding second support seat 321 and are connected to the middle frame (here refers to the two ends of the second damping piston rod 322 abutting against the first sliding sub-rod 231 and the second sliding sub-rod 232), and the middle frame is used to limit the movement of the second damping piston rod 322 in the second direction. The second damping oil circuit (specifically the end of the second piston sleeve 324) is connected to the second connecting member 323, and the lower side of the second support seat 321 and the lower side of the second connecting member 323 are both connected to the second connecting plate 328, and are fixed to the base plate assembly through the second connecting plate 328.

[0093] The damping active control component also includes multiple sensors, and the first regulating motor 318, the second regulating motor 327 and the multiple sensors are all connected to the controller, so that after receiving the signals from the multiple sensors, the controller controls the first regulating motor 318 to change the rotation angle of the first regulating valve body 3181, and controls the second regulating motor 327 to change the rotation angle of the second regulating valve body 3271, thereby adjusting the flow cross-sectional area of ​​the damping oil in the corresponding damping oil circuit and changing the magnitude of the damping force. In the present invention, the controller uses the hyperbolic tangent model as the control model, simulates the related models such as the variable flow interface, and realizes the control of the damping piston rod.

[0094] The present invention collects and inputs the energy and direction of the seismic wave to the controller, and uses the model to perform data simulation and control, adjusts the damping force of the damping oil, so that the cabinet and other equipment can be controlled within a range with less acceleration under the influence of the seismic wave, and thereby controls the rotation angle of the regulating valve body. The hyperbolic tangent model is a known design model, and the data acquisition sensor is also a common signal acquisition device in the field. The present invention uses such a design model and data acquisition method to obtain the final control signal.

[0095] The present invention, through the application of the above-mentioned elastic tuned rail isolation device with adjustable damping, can utilize the friction between the curvature of the slide rail and the surface of the damping pulley to consume seismic energy to maintain the stability of the cabinet. At the same time, with the help of multiple sensors, the movement of the isolation device caused by the earthquake is sensed, and the cross-sectional area through which the damping oil passes in the two damping oil circuits is obtained after calculation by the controller, thereby realizing automatic damping adjustment, thereby actively consuming seismic wave energy and suppressing the swing amplitude between the middle frame and the track surface.

[0096] In addition, when a cabinet is installed on the device, the device can be regarded as a dual-degree-of-freedom system with variable damping. When different seismic waves are input, the seismic acceleration response value received by the cabinet is reduced to about 8%, and the shock absorption effect can reach more than 80% to 90%, which can ensure the safety of the cabinet of data storage and transmission equipment under a major earthquake. The device can be used for seismic isolation of data cabinets and precision instruments in high-tech, finance, communications, military, energy, cultural relics and government fields.

[0097] The present invention also provides a seismic isolation method for an elastically tuned track seismic isolation device with adjustable damping, which uses the above-mentioned elastically tuned track seismic isolation device with adjustable damping. During an earthquake, the top plate assembly of the elastically tuned track seismic isolation device with adjustable damping moves relative to the bottom plate assembly in a first direction and / or a second direction. In order to reduce the impact of seismic waves on the cabinet, the seismic isolation device in the present invention consumes seismic wave energy synchronously through a passive and active method.

[0098] On the one hand, in the elastic tuned track seismic isolation device with adjustable damping, the passive seismic isolation component passively consumes seismic wave energy when an earthquake occurs: when the top plate component moves relative to the bottom plate component in the first direction and / or the second direction, the middle frame in the elastic tuned track seismic isolation device with adjustable damping passively consumes seismic wave energy through the damping friction between the first damping pulley and the lower tuning track and / or the damping friction between the second damping pulley and the upper tuning track; at the same time, when the first damping pulley and / or the second damping pulley rotates, the damping friction between the pulley member and the central axis passively consumes seismic wave energy.

[0099] During the movement, if the top plate assembly and the bottom plate assembly move relative to each other in the first direction, and the top plate assembly and the middle frame move relative to each other in the first direction, damping friction occurs between the second damping pulley and the upper tuning track, and damping friction occurs between the pulley member inside the second damping pulley and the central axis, thereby consuming the seismic wave energy; if the top plate assembly and the bottom plate assembly move relative to each other in the second direction, and the middle frame and the bottom plate assembly move relative to each other in the second direction, damping friction occurs between the first damping pulley and the lower tuning track, and the first damping Damping friction occurs between the pulley parts inside the pulley and the central axis, thereby consuming the seismic wave energy; if the top plate assembly and the bottom plate assembly move relative to each other in the first direction and the second direction at the same time, the top plate assembly and the middle frame move relative to each other in the first direction, and the middle frame and the bottom plate assembly move relative to each other in the second direction. At this time, damping friction occurs between the first damping pulley and the lower tuning rail, between the second damping pulley and the upper tuning rail, and between the pulley parts inside each damping pulley and the central axis, thereby consuming the seismic wave energy in two directions.

[0100] At the same time, after an earthquake occurs, the curved surface design of the upper tuning track and the lower lowercase track provides restoring force for the entire seismic isolation device to return to its original position.

[0101] On the other hand, in the process of realizing the passive consumption of seismic wave energy, the present invention also consumes seismic energy through the damping active control component, which specifically includes the following process:

[0102] S1. Detect the acceleration when an earthquake occurs through multiple sensors and send the detection results to the controller.

[0103] In the present invention, a first sensor and a second sensor are provided on the lower side of the seismic isolation device to respectively measure the acceleration in the first direction and the second direction when an earthquake occurs; a third sensor and a fourth sensor are also provided on the upper side of the seismic isolation device to respectively measure the acceleration of the cabinet in the first direction and the second direction when an earthquake occurs.

[0104] S2. The controller determines the direction and acceleration of the seismic wave when an earthquake occurs, and uses the hyperbolic tangent model to simulate the motion state of the damping oil circuit and the regulating valve body in the elastic tuned track isolation device with adjustable damping, and determines the rotation angle of the regulating valve body.

[0105] The controller analyzes the sensor detection data to determine the direction and force of the seismic wave, and transmits the corresponding data to the hyperbolic tangent model for simulation. Based on the model, the controller adjusts the rotation angle of the valve body when the required seismic isolation effect is obtained.

[0106] (1) The damping force of the damping oil in the damping oil circuit model under different cross sections is simulated in the hyperbolic tangent model;

[0107] (2) The earthquake acceleration in the first direction and the second direction is determined by the first sensor and the second sensor, and the impact of the earthquake on the cabinet can be determined by the third sensor and the fourth sensor, thereby determining the required damping force in the first direction and the second direction;

[0108] (3) Based on the recorded damping force of the damping oil at different cross-sections in the damping oil circuit model and the required damping force obtained by different sensors, the cross-section sizes that need to be adjusted in the two damping oil circuits can be determined, that is, the rotation angles of the two regulating valve bodies can be obtained.

[0109] S3. Based on the calculated rotation angle of the regulating valve body, the controller drives the regulating motor to move and drives the regulating valve body to rotate to the required angle, thereby changing the flow cross-sectional area of ​​the damping oil in the damping oil circuit, and actively consumes the seismic wave energy through the flow of the damping oil in the damping oil circuit.

[0110] During an earthquake, multiple sensors detect earthquake and cabinet motion data in real time, and feed it back to the hyperbolic tangent model for closed-loop adjustment, so that the damping active control components of the entire seismic isolation device can be adjusted in real time.

[0111] The present invention also includes a reset process after an earthquake: after the controller detects through a sensor that the earthquake is over, the first regulating motor and the second regulating motor drive the corresponding regulating valve body to reset to the original state.

[0112] The process of sensor collecting and transmitting data, the design of the hyperbolic tangent model and the signal input process are commonly used design methods in this field. The present invention does not improve on this and will not describe the specific design process in detail.

[0113] The present invention utilizes active seismic isolation and passive seismic isolation to cooperate with each other. On the one hand, it can increase the superposition of seismic wave energy consumption, further enhance the seismic isolation effect, and maintain the stability of the cabinet. On the other hand, by coordinating the two methods, while using traditional seismic isolation methods, the initiative of the seismic isolation device can be brought into play, so that different seismic isolation controls can be achieved according to different seismic waves, thereby increasing the adjustability of the seismic isolation device.

[0114] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0115] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A damping adjustable elastic tuned track seismic isolation device, comprising a bottom plate assembly connected to a base, and a top plate assembly connected to a cabinet, wherein a seismic isolation assembly is arranged between the bottom plate assembly and the top plate assembly, characterized in that: The seismic isolation assembly includes a first damping active control assembly and a second damping active control assembly, The first damping active control component and the second damping active control component both include a damping oil circuit filled with damping oil, a regulating valve, and a damping piston rod, wherein the regulating valve is disposed on the damping oil circuit and connected to the regulating motor, so that the regulating valve changes the flow cross-sectional area of ​​the damping oil under the drive of the regulating motor, and the damping piston rod passes through the damping oil circuit and is sealed and connected to the inner wall of the damping oil circuit; In the first damping active control assembly, the damping piston rod is connected to the bottom plate assembly, and the damping oil circuit is connected to the top plate assembly, so that when the bottom plate assembly drives the damping piston rod to reciprocate in the first direction, the damping oil flows in the damping oil circuit; In the second damping active control component, the damping oil circuit is connected to the base plate component, and the damping piston rod is connected to the top plate component, so that when the base plate component drives the damping oil circuit to reciprocate in the second direction, the damping oil flows in the damping oil circuit.

2. The damping adjustable elastic tuned track seismic isolation device according to claim 1 is characterized in that: The seismic isolation assembly also includes a plurality of sensors. The regulating motor and the plurality of sensors are connected to a controller, so that the controller controls the regulating motor to change the rotation angle of the regulating valve body after receiving signals from the plurality of sensors.

3. The damping adjustable elastic tuned track seismic isolation device according to claim 1, characterized in that: In the damping oil circuit, the two ends of the piston sleeve are respectively connected to the two open ends of the regulating valve through angle sleeves, and the damping piston rod passes through the piston sleeve and is sealed with the inner wall of the piston sleeve, so that when the damping piston rod and the piston sleeve slide relative to each other, the damping oil in the damping oil circuit is driven to flow.

4. The damping adjustable elastic tuned track seismic isolation device according to claim 3 is characterized in that: The regulating valve body is columnar, and the regulating valve seat is provided with a accommodating cavity for accommodating the regulating valve body. The regulating valve seat is provided with a pipe through hole, and the regulating valve body is provided with a rotating part through hole, and the central axis of the rotating part through hole and the central axis of the pipe through hole are both perpendicular to the central axis of the regulating valve body: when the central axis of the rotating part through hole coincides with the central axis of the pipe through hole, the flow cross-sectional area of ​​the damping oil in the damping oil circuit is the largest; when the central axis of the rotating part through hole is perpendicular to the central axis of the pipe through hole, the flow cross-sectional area of ​​the damping oil in the damping oil circuit is the smallest.

5. The damping adjustable elastic tuned track seismic isolation device according to claim 1, characterized in that: The seismic isolation assembly further includes a passive seismic isolation assembly, which includes a middle frame, a plurality of first damping pulleys and a plurality of second damping pulleys mounted on the middle frame, a lower tuning track mounted on the upper side of the bottom plate assembly, and an upper tuning track mounted on the lower side of the top plate assembly: The central axis of the first damping pulley and the central axis of the second damping pulley are perpendicular to each other; The bottom of the first damping pulley protrudes from the middle frame and abuts against the upper surface of the lower tuning rail, and the top of the second damping pulley protrudes from the middle frame and abuts against the lower surface of the upper tuning rail, so that the first damping pulley and the second damping pulley consume seismic energy through damping force during rotation.

6. The damping adjustable elastic tuned track seismic isolation device according to claim 5, characterized in that: The upper surface of the lower tuning track and the lower surface of the upper tuning track are both formed of arc surfaces with the same curvature; Alternatively, the upper surface of the lower tuning track and the lower surface of the upper tuning track are both formed by sequentially connecting a plurality of arc surfaces with different curvatures.

7. The damping adjustable elastic tuned track seismic isolation device according to claim 5, characterized in that: The passive seismic isolation assembly also includes two anti-roll members arranged on opposite sides of the second direction, the upper ends of the anti-roll members are fixedly connected to the top plate assembly, and the lower ends are clamped with the middle frame, so that the anti-roll members slide along the middle frame in the first direction under the drive of the top plate assembly.

8. The damping adjustable elastic tuned track seismic isolation device according to claim 5, characterized in that: The first damping pulley and the second damping pulley both include a central shaft and a pulley member, wherein the central shaft is fixed on the middle frame, the pulley member is sleeved on the central shaft, and a damping friction member is provided between the pulley member and the central shaft, and the damping friction force between the damping friction member and the pulley member is used to consume seismic energy.

9. A seismic isolation method for an elastically tuned track seismic isolation device with adjustable damping, characterized in that: The damping adjustable elastic tuned track seismic isolation device according to any one of claims 1 to 8 is applied. During an earthquake, the top plate assembly of the damping adjustable elastic tuned track seismic isolation device moves relative to the bottom plate assembly in a first direction and / or a second direction, and consumes seismic energy through the damping active control assembly: S1, detecting the acceleration when an earthquake occurs through multiple sensors, and sending the detection results to the controller; S2, the controller determines the direction and acceleration of the seismic wave when the earthquake occurs, and uses the hyperbolic tangent model to simulate the motion state of the damping oil circuit and the regulating valve body in the elastic tuned track isolation device with adjustable damping, and determines the rotation angle of the regulating valve body; S3. Based on the calculated rotation angle of the regulating valve body, the controller drives the regulating motor to move and drives the regulating valve body to rotate to the required angle, thereby changing the flow cross-sectional area of ​​the damping oil in the damping oil circuit, and actively consumes the seismic wave energy through the flow of the damping oil in the damping oil circuit.

10. The seismic isolation method of the elastic tuned track seismic isolation device with adjustable damping according to claim 9, characterized in that: In the damping adjustable elastic tuned track seismic isolation device, the passive seismic isolation component also passively consumes seismic wave energy when an earthquake occurs: When the top plate assembly moves relative to the bottom plate assembly in the first direction and / or the second direction, the middle frame in the damping-adjustable elastic tuning track seismic isolation device passively consumes seismic wave energy through the damping friction between the first damping pulley and the lower tuning track and / or the damping friction between the second damping pulley and the upper tuning track; At the same time, when the first damping pulley and / or the second damping pulley rotates, the damping friction between the pulley member and the central axis passively consumes the seismic wave energy.

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