Anti-pulling inclined plane three-dimensional isolation bearing

Abstract

The application provides an anti-pulling inclined plane three-dimensional isolation bearing, relates to the technical field of isolation control, and can provide complete self-resetting, anti-pulling, three-dimensional isolation and moment reduction of a support structure after an earthquake. The anti-pulling inclined plane three-dimensional isolation bearing can effectively reduce the bending moment failure probability of a support structure of a column type electrical equipment, improve the safety of the overall structure, and reduce the high cost caused by increasing the cross-sectional size of a column insulator in a high-intensity area. When the isolation layer has a lifting trend, the sliding block cooperates with the base limiting structure to prevent the further separation of the upper base and the lower base, thereby providing the anti-pulling function.

Description

Technical Field

[0001] This invention relates to the field of seismic isolation control technology, and in particular to a three-dimensional seismic isolation bearing with an anti-pull-out inclined surface. Background Technology

[0002] In the 1880s, the University of California, Berkeley developed a friction pendulum isolation device, called the Friction Pendulum System / Bearing (FPS / FPB). This device combines the low sensitivity and high stability of planar sliding isolation devices across a wide range of seismic excitation frequencies with its unique circular arc sliding mechanism, giving it a self-resetting function. During operation, it moves like a pendulum, extending the natural period of the isolated structure and avoiding the dominant period of earthquakes. Simultaneously, it converts kinetic energy into heat energy through the friction pair of the bearing, reducing the impact of earthquakes on the structure. However, the problem of eliminating residual displacement in the bearing remains. With the development of seismic isolation technology, inclined friction bearings, combining the advantages of friction pendulums with stable restoring force and the ability to completely eliminate residual displacement, have increasingly become a research hotspot.

[0003] For pillar-type electrical equipment, the bottom bending moment of the supporting insulator, the top displacement of the structure, and the stress of critical components are key parameters for evaluating safety, such as flexible DC converter valves with bottom support structures. Especially for pillar-type electrical equipment located in high-intensity seismic zones, the high center of gravity makes them highly sensitive to vibration. Under strong earthquakes, the coupled effect of horizontal and vertical vibrations can easily lead to excessive top displacement, bottom bending moments exceeding limits for the pillar insulators, and damage to power modules. To meet structural safety requirements, designers often choose to increase the cross-sectional area of ​​the supporting structure; however, this leads to a sharp increase in construction costs, making it difficult to achieve the goal of economic reliability.

[0004] To address the aforementioned problems, existing friction isolation bearings employ three-dimensional isolation bearings, incorporating many advantages of friction pendulum devices. For example, Chinese patent CN115573474A, published on January 6, 2023, discloses a three-dimensional isolation bearing that utilizes grooves in the anti-pull-out buckle plate and protruding edges on the upper seat plate and upper connecting steel plate. The interlocking connection of the grooves and protruding edges achieves the anti-pull-out effect through the buckle plate. However, a drawback of this prior art is that the grooves in the buckle plate are straight grooves, and the protruding edges of the upper seat plate are straight edges. While the anti-pull-out buckle plate provides the anti-pull-out effect, it restricts the upper seat plate's movement to a straight line, hindering the relative sliding and self-resetting sliding isolation effect between the upper seat plate and the isolator along the concave arc surface. This results in a conflict between the sliding performance and pull-out performance of the bearing, leading to insufficient pull-out performance of the bearing. This fails to meet the pull-out resistance and three-dimensional vibration reduction and isolation performance requirements of electrical equipment, which can easily cause damage to electrical equipment under strong earthquakes and seriously affect the promotion and application of seismic isolation technology in the field of electrical seismic isolation. Summary of the Invention

[0005] The purpose of this invention is to provide a three-dimensional seismic isolation bearing with an anti-pull-out inclined surface, capable of complete self-resetting after an earthquake, resisting pull-out, providing three-dimensional seismic isolation and reducing the bending moment of the supporting structure. It can effectively reduce the probability of bending moment failure in the support structure of column-type electrical equipment, improve the overall structural safety, and reduce the high costs incurred by increasing the cross-sectional size of column insulators in high-intensity seismic areas. When the isolation layer tends to lift off, the slider and the base limiting structure cooperate to prevent further separation of the upper and lower bases, thereby providing pull-out resistance.

[0006] This invention provides a three-dimensional seismic isolation bearing with an anti-pull-out slope, comprising: an upper base with an inverted V-shaped slide rail at the bottom, and inverted V-shaped blocks on both sides of the upper base, forming an inverted V-shaped groove between the inverted V-shaped blocks and the inverted V-shaped slide rail; a lower base with a V-shaped slide rail at the top, and V-shaped blocks on both sides of the lower base, forming a V-shaped groove between the V-shaped blocks and the V-shaped slide rail; an upper slider with an inverted V-shaped slope at the top, the inverted V-shaped slope abutting against the inverted V-shaped slide rail, and upper limit blocks on both sides of the upper slider, the upper limit blocks being embedded in the inverted V-shaped groove; and a lower slider with a V-shaped slope at the bottom, the V-shaped slope fitting into the V-shaped slide rail, and lower limit blocks on both sides of the lower slider, the lower limit blocks being embedded in the V-shaped groove; the inverted V-shaped slide rail and the V-shaped slide rail are orthogonal, and the upper slider and the lower slider are flexibly connected by a vertical seismic isolation structure.

[0007] Furthermore, the upper base includes at least two inverted V-shaped slide rails arranged side by side, with a single-sided limiting plate on the outer side of the two inverted V-shaped slide rails and a double-sided limiting plate between the adjacent inner sides of the two inverted V-shaped slide rails. The single-sided limiting plate and the double-sided limiting plate are respectively provided with the inverted V-shaped stop on the side adjacent to the inverted V-shaped slide rail.

[0008] Furthermore, the number of upper sliders is at least two and they are arranged side by side. The upper sliders are respectively provided with upper limit blocks on both sides. The two upper sliders are respectively embedded in the two inverted V-shaped slide rails, and the upper limit blocks are embedded in the inverted V-shaped grooves.

[0009] Furthermore, the lower base includes at least two V-shaped slide rails arranged side by side, with a single-sided limiting plate on the outer side of the two V-shaped slide rails and a double-sided limiting plate on the inner side of the two V-shaped slide rails. The single-sided limiting plate and the double-sided limiting plate are respectively provided with V-shaped blocks on the side of the V-shaped slide rails adjacent to the single-sided limiting plate and the double-sided limiting plate.

[0010] Furthermore, the number of the lower sliders is at least two and they are arranged side by side. The two lower sliders are respectively provided with lower limit blocks on both sides. The two lower sliders are respectively embedded in the two V-shaped slide rails, and the lower limit blocks are embedded in the V-shaped grooves.

[0011] Furthermore, both the upper limit block and the lower limit block are rhomboid structures, and the thickness gradually decreases from the center to both sides.

[0012] Furthermore, the vertical vibration isolation structure includes horizontally laminated rubber and inclinedly laminated rubber. The horizontally laminated rubber is located between the middle of the upper slider and the lower slider, and the inclinedly laminated rubber is connected to the top of the lower slider and the bottom of the upper slider, with a plurality of the inclinedly laminated rubbers surrounding the horizontally laminated rubber.

[0013] Furthermore, the upper slider and the lower slider are connected by a degree-of-freedom decoupling device.

[0014] Furthermore, the degree-of-freedom decoupling device includes screw holes and bolts. The screw holes or bolts are provided on different inclined laminated rubber layers in the upper layer, and the screw holes or bolts are provided on different inclined laminated rubber layers in the lower layer. The bolts on the inclined laminated rubber layers in the upper layer are inserted into the screw holes on the inclined laminated rubber layers in the lower layer, and the bolts on the inclined laminated rubber layers in the lower layer are inserted into the screw holes on the inclined laminated rubber layers in the upper layer.

[0015] Furthermore, a friction material is provided between the inverted V-shaped slide rail and the inverted V-shaped inclined surface, and a friction material is provided between the V-shaped slide rail and the V-shaped inclined surface.

[0016] In the technical solution of the present invention, the upper base and the upper slider, and the lower base and the lower slider, slide in contact with each other through the V-shaped slide rail and the inclined surface, so that the support can completely reset itself after sliding. Furthermore, V-shaped blocks of corresponding shapes are set on both sides of the V-shaped slide rail to form a V-shaped groove structure, and the limiting blocks on both sides of the slider are inserted into the V-shaped groove structure, so that when the support is subjected to tension or lifting, it can provide pull-out resistance in time without affecting the sliding performance of the support. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the upper and lower slider structures of the present invention;

[0020] Figure 3This is a schematic diagram of the vertical isolation structure and degree-of-freedom decoupling device of the present invention;

[0021] Figure 4 This is a schematic diagram of the lower base structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the double-sided limiting plate structure of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Upper base, 101-Inverted V-shaped slide rail;

[0025] 2-Lower base, 201-V-shaped slide rail, 202-V-shaped groove;

[0026] 3-Upper slider, 301-Inverted V-shaped ramp, 302-Upper limit block;

[0027] 4-Lower slider, 401-V-shaped inclined plane, 402-Lower limit block;

[0028] 5-Single-sided limiting plate, 6-Double-sided limiting plate, 7-V-shaped stop;

[0029] 8 - Vertical isolation structure, 801 - Horizontal laminated rubber, 802 - Inclined laminated rubber;

[0030] 9-Degree of freedom decoupling device, 901-bolt, 902-screw hole;

[0031] 10-Friction material, 11-Fixing angle steel. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example 1

[0036] like Figures 1-5 As shown, this invention provides a three-dimensional seismic isolation bearing with an anti-pull-out inclined surface, comprising: an upper base 1, with an inverted V-shaped slide rail 101 at the bottom, and inverted V-shaped blocks 7 (not shown, but refer to the V-shaped blocks 7, in opposite directions) on both sides of the upper base 1, forming an inverted V-shaped groove 202 (not shown, but refer to the V-shaped groove 202, in opposite directions) between the inverted V-shaped blocks 7 and the inverted V-shaped slide rail 101; a lower base 2, with a V-shaped slide rail 201 at the top, and V-shaped blocks 7 on both sides of the lower base 2, forming a V-shaped groove 202 between the V-shaped blocks 7 and the V-shaped slide rail 201; and an upper slider. 3. The top is provided with an inverted V-shaped inclined surface 301, which abuts against the inverted V-shaped slide rail 101. The upper slider 3 is provided with upper limit blocks 302 on both sides, which are embedded in the inverted V-shaped groove 202. The lower slider 4 is provided with a V-shaped inclined surface 401 at the bottom, which fits into the V-shaped slide rail 201. The lower slider 4 is provided with lower limit blocks 402 on both sides, which are embedded in the V-shaped groove 202. The inverted V-shaped slide rail 101 and the V-shaped slide rail 201 are orthogonal. The upper slider 3 and the lower slider 4 are flexibly connected by a vertical vibration isolation structure 8.

[0037] Specifically, in this device, the inverted V-shaped inclined surface 301 of the upper slider 3 abuts upward against the inverted V-shaped slide rail 101 of the upper base 1, and the V-shaped inclined surface 401 of the lower slider 4 abuts downward against the V-shaped slide rail 201 of the lower base 2. The inverted V-shaped slide rail 101 and the V-shaped slide rail 201 are orthogonal. The upper base 1 is fixedly connected to the upper fixed structure, and the lower base 2 is fixedly connected to the ground. Thus, the support of this device can slide in the entire two-dimensional plane. When an earthquake occurs, the upper slider 3 and the lower slider 4 slide a certain distance along the slide rails in the corresponding directions to avoid structural damage. During this sliding process, due to gravity and the energy consumption of the inclined surface climbing, the higher the entire device slides towards the sides of the (inverted) V-shaped slide rail 201, the higher its energy consumption, thereby preventing the entire support device from sliding too much and causing the supported equipment to shake too much. Furthermore, after the earthquake ends, under the influence of gravity, the upper slider 3 and the lower slider 4 will automatically return to their initial contact positions due to the guiding effect of the V-shaped slide rail 201, thus simultaneously resetting the supported equipment.

[0038] The inverted V-shaped stop 7 is located on both sides below the inverted V-shaped slide rail 101, and there is a gap between it and the inverted V-shaped slide rail 101 at one end, which forms the inverted V-shaped groove 202; similarly, the V-shaped stop 7 is located on both sides above the V-shaped slide rail 201, and there is a gap between it and the V-shaped slide rail 201 at one end, which forms the V-shaped groove 202. Upper limit blocks 302 are set on both sides of the upper slider 3 at positions corresponding to the inverted V-groove 202, and the upper limit blocks 302 are inserted into the inverted V-groove 202. Lower limit blocks 402 are set on both sides of the lower slider 4 at positions corresponding to the V-groove 202, and the lower limit blocks 402 are inserted into the V-groove 202. When the support is pulled or lifted, the upper limit blocks 302 will move within the inverted V-groove 202 during the sliding process and collide / abut against the upper / lower walls of the inverted V-groove 202, thereby achieving the effect of resisting pull-out. Similarly, the lower limit blocks 402 will move within the V-groove 202 during the sliding process and collide / abut against the upper / lower walls of the V-groove 202, thereby achieving the effect of resisting pull-out.

[0039] Therefore, this device mainly maintains the sliding performance of the support by moving the upper limit block 302 / lower limit block 402 along the V-shaped direction within the inverted V-groove 202 / V-groove 202, and simultaneously maintains the pull-out resistance of the support by restricting the collision / abutment of the upper limit block 302 / lower limit block 402 vertically within the inverted V-groove 202 / V-groove 202. Relative to the static state of the lower base 2, the upper base 1 has mutually perpendicular bidirectional and vertical degrees of freedom, providing bidirectional and vertical seismic isolation for the superstructure.

[0040] The (inverted) V-shaped slide rail 201 has raised edges around its perimeter. On the one hand, this forms a groove structure inside the slide rail to prevent the slider from coming out. On the other hand, it forms an (inverted) V-shaped groove 202 together with the (inverted) V-shaped stop block 7.

[0041] The flexible connection between the upper slider 3 and the lower slider 4 is mainly achieved through the vertical isolation structure 8. The vertical isolation structure 8 allows for a certain distance of vertical separation between the upper slider 3 and the lower slider 4, thereby absorbing energy and isolating vibrations, and providing vertical isolation force for the upper support structure. Specifically, the vertical isolation structure 8 can be made of laminated rubber.

[0042] Example 2

[0043] like Figures 1-2 , Figures 4-5 As shown, the upper base 1 includes at least two parallel inverted V-shaped slide rails 101. A single-sided limiting plate 5 is provided on the outer sides of the two inverted V-shaped slide rails 101, and a double-sided limiting plate 6 is provided between the adjacent inner sides of the two inverted V-shaped slide rails 101. An inverted V-shaped stop block 7 is provided on the side of each of the single-sided limiting plate 5 and the double-sided limiting plate 6 adjacent to the inverted V-shaped slide rail 101. The number of upper sliders 3 is at least two and they are arranged in parallel. Upper limit blocks 302 are provided on both sides of each of the two upper sliders 3. The two upper sliders 3 are respectively embedded in the two inverted V-shaped slide rails 101, and the upper limit blocks 302 are embedded in the inverted V-shaped grooves 202. The lower base 2 includes at least two V-shaped slide rails 201 arranged side by side. A single-sided limiting plate 5 is provided on the outer sides of the two V-shaped slide rails 201, and a double-sided limiting plate 6 is provided on the inner sides of the two V-shaped slide rails 201. A V-shaped stop block 7 is provided on the side of each of the single-sided and double-sided limiting plates 5 and 6 adjacent to the V-shaped slide rails 201. There are at least two sliding blocks 4 arranged side by side. Lower limiting blocks 402 are provided on both sides of each sliding block 4. The two sliding blocks 4 are respectively embedded in the two V-shaped slide rails 201, and the lower limiting blocks 402 are embedded in the V-shaped grooves 202.

[0044] Specifically, in this embodiment 2, the upper base 1 and the upper slider 3 are mainly composed of two parallel slide rails and inclined plane structures, which play a balancing role in the movement tendency in the non-sliding direction. A double-sided limiting plate 6 is provided between the two parallel inverted V-shaped slide rails 101 of the upper base 1 for isolation. Both sides of the double-sided limiting plate 6 have inverted V-shaped slide rails 101, so inverted V-shaped blocks 7 are provided on both sides. The single-sided limiting plate 5 only has an inverted V-shaped block 7 on the side with the inverted V-shaped slide rail 101. The lower base 2 will not be described in detail.

[0045] The single-sided limiting plate 5, the upper base 1, and the lower base 2 are all fixedly connected to the upper support or the ground by fixing angle steel 11, and there are holes on them for connection and fixing.

[0046] Example 3

[0047] like Figures 1-5 As shown, both the upper limit block 302 and the lower limit block 402 are rhomboid structures, and the thickness gradually decreases from the middle to both sides.

[0048] Specifically, the upper limit block 302 and the lower limit block 402 are flat, rhomboid structures, including a short axis along the longitudinal direction and a long axis along the transverse direction. The short axis along the longitudinal direction is located between the middle of the inverted V-shaped groove 202 and the V-shaped groove 202. When the upper limit block 302 / lower limit block 402 slides within the inverted V-shaped groove 202 / V-shaped groove 202, and encounters a change in sliding direction, the rhomboid structure of the upper limit block 302 and lower limit block 402 is more likely to tilt towards the position where the direction is changed under the action of gravity, thus changing to a sliding posture along the inverted V-shaped groove 202 / V-shaped groove 202 more quickly. Therefore, the upper limit block 302 and lower limit block 402 have the effect of facilitating the change of sliding posture within the inverted V-shaped groove 202 / V-shaped groove 202.

[0049] Example 4

[0050] like Figures 1-3 As shown, the vertical isolation structure 8 includes horizontally laminated rubber 801 and inclinedly laminated rubber 802. The horizontally laminated rubber 801 is located between the middle of the upper slider 3 and the lower slider 4. The inclinedly laminated rubber 802 is connected to the top of the lower slider 4 and the bottom of the upper slider 3, and multiple inclinedly laminated rubbers 802 surround the horizontally laminated rubber 801. The upper layer of different inclinedly laminated rubbers 802 is provided with screw holes 902 or bolts 901, and the lower layer of different inclinedly laminated rubbers 802 is also provided with screw holes 902 or bolts 901. The bolts 901 on the upper layer of inclinedly laminated rubber 802 are inserted into the screw holes 902 on the lower layer of inclinedly laminated rubber 802, and the bolts 901 on the lower layer of inclinedly laminated rubber 802 are inserted into the screw holes 902 on the upper layer of inclinedly laminated rubber 802.

[0051] Specifically, the vertical isolation structure 8 is composed of horizontally laminated rubber 801 and inclinedly laminated rubber 802, which are connected to the lower slider 4 and the upper slider 3 by high-temperature vulcanization. At the epicenter, the vertical deformation of the horizontally laminated rubber 801 extends the vertical natural period of the superstructure, reducing the seismic effect. The axial deformation of the inclinedly laminated rubber 802 absorbs energy and reduces the bending moment at the bottom of the superstructure support. The inclinedly laminated rubber 802 can release part of the inclined stiffness of the support. The inclinedly laminated rubber 802 absorbs energy through compression, provides a restoring moment to resist the overturning moment caused by the earthquake, and provides a reaction moment to recenter the support structure, reducing the bending moment at the bottom of the support structure under strong earthquakes, thereby reducing the probability of bending moment failure of the support structure and improving the safety of the overall structure.

[0052] The degree-of-freedom decoupling device 9 specifically restricts the horizontal degree of freedom of the laminated rubber seismic isolation assembly by using bolts 901 and screw holes 902 on the inclined laminated rubber 802, thereby increasing the overall stiffness of the seismic isolation bearing and facilitating its structural design. Through the degree-of-freedom decoupling device 9, the horizontal degree of freedom of the slider is decoupled from the vertical degree of freedom of the laminated rubber vertical seismic isolation device, effectively extending the natural vibration period of the structure, preventing the transmission of seismic vibration energy to the upper structure, and completely eliminating residual displacement.

[0053] Example 5

[0054] like Figure 2 and Figure 3 As shown, friction material 10 is provided between the inverted V-shaped slide rail 101 and the inverted V-shaped inclined surface 301, and friction material 10 is provided between the V-shaped slide rail 201 and the V-shaped inclined surface 401.

[0055] Specifically, the friction material 10 comprises several friction plates or friction blocks, evenly spaced and embedded in the inverted V-shaped inclined surface 301 or V-shaped inclined surface 401. Through the friction between the V-shaped inclined surface 401 and the V-shaped slide rail 201, the seismic energy is converted into heat energy and dissipated. The friction material 10 may be polytetrafluoroethylene (PTFE).

[0056] The principle of this device:

[0057] This invention utilizes a bidirectional symmetrical V-shaped inclined sliding structure between the upper base 1 and the upper slider 3, and between the lower base 2 and the lower slider 4. The upper slider 3 and the lower slider 4 can slide on the upper base 1 and the lower base 2, thereby changing the horizontal natural vibration period of the seismic isolation structure, reducing the maximum acceleration and shear force transmitted to the upper structure, and providing a stable horizontal restoring force. It utilizes its own weight to achieve the self-resetting requirement of zero residual displacement of the seismic isolation support after an earthquake. The V-shaped groove 202 structure formed by the V-shaped stop 7 and the V-shaped slide rail 201 restricts the lower limit block 402 to slide along the V-shaped groove 202 within the V-shaped groove 202 to maintain the sliding performance of the support, and is stopped by the V-shaped groove 202 to maintain the pull-out resistance of the support.

[0058] The vertical deformation of the horizontally laminated rubber 801 increases the vertical vibration period of the seismic isolation structure and reduces its vertical vibration response. Under strong earthquakes, when the plastic deformation of the supporting structure is too large, the inclined laminated rubber 802 yields and compresses to absorb energy, thereby absorbing the energy transmitted by the seismic waves, increasing the deformation capacity, energy dissipation capacity, and ductility of the bottom nodes of the structure, and providing a restoring moment to resist the overturning moment caused by the earthquake. It also provides a reaction moment to recenter the supporting structure, reduce the bottom bending moment of the supporting structure under strong earthquakes, reduce the probability of bending moment failure of the supporting structure, and ultimately improve the safety of the overall structure.

[0059] By restricting the horizontal degree of freedom of the laminated rubber seismic isolation component through the degree-of-freedom decoupling device 9, the overall stiffness of the seismic isolation bearing will be increased and the structural design of the seismic isolation bearing will be facilitated. This will effectively extend the natural vibration period of the structure, prevent the transmission of seismic vibration energy to the upper structure, and completely eliminate residual displacement.

[0060] The friction material 10 between the slider and the rail converts seismic energy into heat and dissipates it. Furthermore, the entire support adopts a prefabricated structure, facilitating the replacement of vulnerable parts after an earthquake. It is suitable for electrical equipment that is sensitive to vibration, prone to overturning, and requires three-dimensional seismic isolation.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-dimensional seismic isolation bearing with an anti-pull-out inclined plane, characterized in that, include: The upper base has an inverted V-shaped slide rail at the bottom, and inverted V-shaped blocks are provided on both sides of the upper base. An inverted V-shaped groove is formed between the inverted V-shaped blocks and the inverted V-shaped slide rail. The lower base has a V-shaped slide rail on the top, and V-shaped blocks are provided on both sides of the lower base. A V-shaped groove is formed between the V-shaped blocks and the V-shaped slide rail. The upper slider has an inverted V-shaped inclined surface at the top, which abuts against the inverted V-shaped slide rail. Upper limit blocks are provided on both sides of the upper slider, and the upper limit blocks are embedded in the inverted V-shaped groove. The lower slider has a V-shaped inclined surface at the bottom, which fits into the V-shaped slide rail. Lower limit blocks are provided on both sides of the lower slider, and the lower limit blocks are embedded in the V-shaped groove. The inverted V-shaped slide rail and the V-shaped slide rail are orthogonal, and the upper slider and the lower slider are flexibly connected by a vertical vibration isolation structure; The vertical vibration isolation structure includes horizontally laminated rubber and inclinedly laminated rubber. The horizontally laminated rubber is located between the middle of the upper slider and the lower slider. The inclinedly laminated rubber is connected to the top of the lower slider and the bottom of the upper slider, and a plurality of the inclinedly laminated rubbers surround the horizontally laminated rubber. The upper slider and the lower slider are also connected by a degree-of-freedom decoupling device; The degree-of-freedom decoupling device includes screw holes and bolts; The upper layer of different inclined laminated rubber is provided with the screw holes or the bolts, and the lower layer of different inclined laminated rubber is provided with the screw holes or the bolts; The bolt on the upper inclined laminated rubber is inserted into the screw hole on the lower inclined laminated rubber, and the bolt on the lower inclined laminated rubber is inserted into the screw hole on the upper inclined laminated rubber.

2. The anti-pull-out inclined three-dimensional seismic isolation bearing according to claim 1, characterized in that, The upper base includes at least two inverted V-shaped slide rails arranged side by side. A single-sided limiting plate is provided on the outer side of the two inverted V-shaped slide rails, and a double-sided limiting plate is provided between the adjacent inner sides of the two inverted V-shaped slide rails. An inverted V-shaped stop block is provided on the side of the single-sided limiting plate and the double-sided limiting plate adjacent to the inverted V-shaped slide rail, respectively.

3. The anti-pull-out inclined three-dimensional seismic isolation bearing according to claim 2, characterized in that, The number of upper sliders is at least two and they are arranged side by side. The upper sliders are respectively provided with upper limit blocks on both sides. The two upper sliders are respectively embedded in the two inverted V-shaped slide rails, and the upper limit blocks are embedded in the inverted V-shaped grooves.

4. The anti-pull-out inclined three-dimensional seismic isolation bearing according to claim 3, characterized in that, The lower base includes at least two V-shaped slide rails arranged side by side. A single-sided limiting plate is provided on the outer side of the two V-shaped slide rails, and a double-sided limiting plate is provided between the adjacent inner sides of the two V-shaped slide rails. The single-sided limiting plate and the double-sided limiting plate are respectively provided with V-shaped blocks on the side of the V-shaped slide rails.

5. The anti-pull-out inclined three-dimensional seismic isolation bearing according to claim 4, characterized in that, The number of the lower sliders is at least two and they are arranged side by side. The two lower sliders are respectively provided with lower limit blocks on both sides. The two lower sliders are respectively embedded in the two V-shaped slide rails, and the lower limit blocks are embedded in the V-shaped grooves.

6. The anti-pull-out inclined three-dimensional seismic isolation bearing according to claim 1, characterized in that, Both the upper limit block and the lower limit block are rhomboid structures, and their thickness gradually decreases from the center to both sides.

7. The anti-pull-out inclined three-dimensional seismic isolation bearing according to claim 5, characterized in that, Friction material is provided between the inverted V-shaped slide rail and the inverted V-shaped inclined surface, and friction material is provided between the V-shaped slide rail and the V-shaped inclined surface.

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