A linear slide rail isolation system with variable damping

Abstract

The present invention discloses a linear slide rail isolation system with variable damping in the field of isolation technology, comprising one or more isolation devices, wherein the isolation device comprises an X-axis slide rail assembly and a Y-axis slide rail assembly arranged orthogonally, wherein the X-axis slide rail assembly comprises a bottom plate, an X-axis slide rail, and an X-axis reset member, and the Y-axis slide rail assembly comprises a top plate, a Y-axis slide rail, and a Y-axis reset member, wherein the Y-axis slide rail and the X-axis slide rail are connected via a slider assembly, and the slider assembly is connected to the X-axis reset member and the Y-axis reset member so that the slider assembly returns to its original position in the X and Y directions, and the surface friction coefficient of the X-axis slide rail and the Y-axis slide rail gradually increases in the direction extending from the midpoint to the two ends. The progressive design of the surface friction of the linear slide rail in the present invention can better protect the upper equipment and avoid damage caused by excessive displacement of the upper equipment; and the present invention can provide a higher load-bearing capacity and improve the support stability effect.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration isolation, and in particular to a linear slide rail vibration isolation system with variable damping. Background Art

[0002] In order to prevent various electromechanical equipment, cultural relics, electronic precision instruments and other equipment from being affected by earthquakes, they often need to be installed in seismic isolation devices, which can buffer the seismic force and prevent such equipment from being damaged by earthquakes. Existing seismic isolation devices mostly use a linear slide rail structure for seismic isolation. For example, the patent with publication number CN105697646A discloses a cross-sliding seismic isolation pedestal and its seismic isolation method, which uses a cross-shaped sliding isolation pedestal to achieve seismic wave isolation. Specifically, it includes two mutually intersecting slide rails and two sliders. The two slide rails and two sliders cooperate with each other to alleviate the seismic wave energy from all directions. In this structure, the slide rails and sliders are connected by balls, and the load capacity is improved by curved surface contact.

[0003] However, the seismic energy dissipation of such structures is fixed, while the displacement of equipment above the isolation device varies under different earthquake levels. To better protect the equipment above the isolation device, the isolation device must have different responses and dissipation characteristics for different earthquakes. However, its ability to dissipate seismic forces is poor, making it difficult to offset the impact of larger earthquake energies on the equipment above. Clearly, existing isolation devices cannot achieve earthquake-specific functions.

[0004] In addition, this type of vibration isolation device does not provide good support for the equipment above and has limited load-bearing capacity.

[0005] The above defects are worth solving. Summary of the Invention

[0006] In order to overcome the shortcomings of the existing technology, the present invention provides a linear slide rail seismic isolation system with variable damping, which utilizes the progressive design of the linear slide rail to enable it to provide a gradual seismic energy consumption method according to different seismic energies, thereby better protecting the upper equipment and avoiding damage caused by excessive displacement of the upper equipment; and the present invention can provide a higher load-bearing capacity and improve the support stability effect.

[0007] The technical solution of the present invention is as follows:

[0008] A linear slide rail seismic isolation system with variable damping, characterized by comprising one or more seismic isolation devices;

[0009] The seismic isolation device includes an X-axis slide rail assembly and a Y-axis slide rail assembly provided on the X-axis slide rail assembly, wherein the Y-axis slide rail assembly is arranged orthogonally to the X-axis slide rail assembly;

[0010] The X-axis slide rail assembly includes a bottom plate, an X-axis slide rail and an X-axis reset member provided on the bottom plate; the Y-axis slide rail assembly includes a top plate, a Y-axis slide rail and a Y-axis reset member connected to the top plate; the Y-axis slide rail and the X-axis slide rail are connected via a slider assembly; the slider assembly is connected to the X-axis reset member and is driven by the X-axis reset member to return to its original position along the X-axis slide rail; the slider assembly is connected to the Y-axis reset member and is driven by the Y-axis reset member to return to its original position along the Y-axis slide rail;

[0011] The X-axis slide rail and the Y-axis slide rail are both linear slide rails with different friction coefficients. The surface friction coefficient of the linear slide rail gradually increases from the midpoint of the linear slide rail to its two ends.

[0012] The present invention according to the above scheme is characterized in that the surface friction coefficient of the linear slide rail and the distance extending from the midpoint of the linear slide rail to its two ends are a linear function; or, the surface friction coefficient of the linear slide rail and the distance extending from the midpoint of the linear slide rail to its two ends are a step function.

[0013] The present invention according to the above scheme is characterized in that a slider scraper is provided on the slider assembly, and the slider assembly contacts the X-axis slide rail and the Y-axis slide rail through the slider scraper. The slider scraper is a modified polyurethane material, so that the friction force between the slider scraper and the X-axis slide rail is positively correlated with the movement speed of the slider assembly relative to the X-axis slide rail, and the friction force between the slider scraper and the Y-axis slide rail is positively correlated with the movement speed of the slider assembly relative to the Y-axis slide rail.

[0014] The present invention according to the above scheme is characterized in that the X-axis slide rail assembly includes a first X-axis slide rail assembly and a second X-axis slide rail assembly connected in sequence, the Y-axis slide rail assembly includes a first Y-axis slide rail assembly and a second Y-axis slide rail assembly arranged side by side, the first Y-axis slide rail assembly is arranged on the first X-axis slide rail assembly and is arranged orthogonally to the first X-axis slide rail assembly, and the second Y-axis slide rail assembly is arranged on the second X-axis slide rail assembly and is arranged orthogonally to the second X-axis slide rail assembly.

[0015] The present invention according to the above scheme is characterized in that a support plate for connecting the upper device is provided above the Y-axis slide rail assembly, and an auxiliary function component is provided between the support plate and the X-axis slide rail assembly. The auxiliary function component includes a first connecting member connected to the X-axis slide rail assembly, a second connecting member connected to the support plate, and a limit pin passing through the second connecting member and limit-connected to the first connecting member. A bolt-type positioning bead is also provided on the second connecting member, and the bolt-type positioning bead is engaged with the limit pin after passing through the second connecting member, so that the limit pin is limit-connected to the first connecting member in the initial position.

[0016] The present invention according to the above solution is characterized in that the X-axis slide rail assembly is provided with an X-axis reset chamber for accommodating the X-axis reset member, and the Y-axis slide rail assembly is provided with a Y-axis reset chamber for accommodating the Y-axis reset member;

[0017] Alternatively, the X-axis slide rail assembly is provided with an X-axis reset guide rod for guiding the X-axis reset member, and the X-axis reset member is sleeved on the X-axis reset guide rod; the Y-axis slide rail assembly is provided with a Y-axis reset guide rod for guiding the Y-axis reset member, and the Y-axis reset member is sleeved on the Y-axis reset guide rod.

[0018] The present invention according to the above scheme is characterized in that the slider assemblies include a slider connector, a lower slider located at the lower side of the slider connector, and an upper slider located at the upper side of the slider connector. A push rod connector is also provided on the slider connector, and the end of the push rod connector protrudes and is connected to the X-axis reset member / the Y-axis reset member.

[0019] The present invention according to the above scheme has the following beneficial effects:

[0020] (1) The various slide rails in the present invention adopt linear slide rails with different friction coefficients, and with the design of different friction coefficients, the friction force can be increased as the displacement of the upper equipment increases, which is beneficial to the consumption of seismic wave energy; in addition, the present invention uses the speed-sensitive material of the scraper to make the resistance greater as the speed increases, further offsetting the influence of the speed on the upper equipment.

[0021] (2) The present invention utilizes the mutual cooperation between the linear slide rail, the slider and the reset member to enable the upper equipment to move horizontally in any direction, and can also isolate the conduction of seismic force, thereby reducing the impact of seismic force on the upper equipment; the slide rail components in the present invention cross each other to form four cross-staggered and mutually separated support points, which can, on the one hand, improve the load-bearing capacity of the entire seismic isolation device (the load-bearing capacity can be increased from 600kg of the existing linear slide rail structure seismic isolation device to 1500kg), and on the other hand, utilize each support point to increase the tensile and compressive capacity of the upper equipment, thereby improving the compression, torsion and overturning resistance of the entire seismic isolation system.

[0022] (3) The two Y-axis slide rail assemblies of the present invention are spaced apart from each other, so that the upper equipment is always within the support range of the seismic isolation system during an earthquake, avoiding the risk of overturning. It is also beneficial for the installation of cable wiring for electromechanical equipment, etc., and is not prone to pulling or disconnection. In addition, the four slider assemblies of the present invention are separated from each other and the various components are connected by bolts, which can reduce the processing accuracy and installation difficulty of the seismic isolation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the present invention applied to a multi-cabinet scenario;

[0024] Figure 2 Schematic diagram of the structure of the seismic isolation device of the present invention;

[0025] Figure 3 is a schematic diagram of the seismic isolation device of the present invention from another perspective;

[0026] Figure 4 This is a schematic diagram of the seismic isolation device of the present invention after removing the top plate;

[0027] Figure 5 A schematic diagram of another perspective of the seismic isolation device of the present invention after removing the top plate;

[0028] Figure 6 is a schematic diagram of the connection between the first X-axis slide rail assembly and the first Y-axis slide rail assembly;

[0029] Figure 7 Schematic diagram of the connection between the first X-axis slide rail assembly, the first slider assembly, and the second slider assembly;

[0030] Figure 8 is a schematic diagram of the first X-axis slide rail;

[0031] Figure 9 is an exploded view of the first slider assembly;

[0032] Figure 10 A schematic diagram of an auxiliary function component;

[0033] Figure 11 An exploded view of the auxiliary function components;

[0034] Figure 12 This is a diagram of the state changes of auxiliary functional components during an earthquake;

[0035] Figure 13 Schematic diagram of the connection between the second Y-axis slide rail and the second slider assembly in the first Y-axis slide rail assembly;

[0036] Figure 14 is an exploded view of the second slider assembly;

[0037] Figure 15 A schematic diagram of a seismic isolation device in another embodiment with the top plate removed;

[0038] Figure 16 is a schematic diagram of the connection between the first X-axis slide rail assembly and the first Y-axis slide rail assembly in another embodiment;

[0039] Figure 17 is an exploded view of a first slider assembly in another embodiment;

[0040] Figure 18 This is a schematic diagram of the seismic isolation device moving to the X-axis extreme position;

[0041] Figure 19 A schematic diagram showing another perspective of the seismic isolation device moving to the X-axis extreme position;

[0042] Figure 20 This is a schematic diagram of the isolation device after the top plate is removed when it moves to the X-axis extreme position;

[0043] Figure 21 This is a schematic diagram of the seismic isolation device moving to the Y-axis limit position;

[0044] Figure 22 A schematic diagram showing another perspective of the seismic isolation device moving to the Y-axis extreme position;

[0045] Figure 23 This is a schematic diagram of the isolation device after the top plate is removed when it moves to the Y-axis limit position.

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

[0047] 01. First seismic isolation device; 02. Second seismic isolation device; 03. Crossbeam;

[0048] 100, X-axis slide rail assembly; 100a, first X-axis slide rail assembly; 100b, second X-axis slide rail assembly; 110, first X-axis slide rail; 111, first X-axis stopper; 120, second X-axis slide rail; 121, second X-axis stopper; 130, X-axis reset member; 130a, first X-axis reset member; 130b, second X-axis reset member; 131, X-axis reset chamber; 132, X-axis reset guide rod;

[0049] 200, first Y-axis slide rail assembly; 210, first Y-axis slide rail; 211, first Y-axis stopper; 220, second Y-axis slide rail; 221, second Y-axis stopper; 230, Y-axis reset member; 230a, first Y-axis reset member; 230b, second Y-axis reset member; 231, Y-axis reset chamber; 232, Y-axis reset guide rod;

[0050] 300, second Y-axis slide rail assembly;

[0051] 400, first slider assembly; 410, first slider connector; 420, first lower slider; 430, first upper slider; 431, slider scraper; 440, first push rod connector; 441, first push rod swing arm; 4441, first swing arm chute;

[0052] 500, second slider assembly; 510, second slider connector; 520, second lower slider; 530, second upper slider; 540, second push rod connector; 541, second push rod swing arm;

[0053] 600, support plate; 610, auxiliary function component; 611, first connecting member; 6111, slot; 612, second connecting member; 6121, through hole; 6122, first limiting hole; 6123, second limiting hole; 613, limiting pin; 6131, first limiting groove; 6132, second limiting groove; 6133, ball head; 614, compression spring; 615, retaining ring; 616, set screw; 617, bolt-type positioning bead; 6171, positioning bolt; 6172, positioning spring; 6173, positioning pad; 6174, positioning bead. DETAILED DESCRIPTION

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0055] like Figures 1 to 23 As shown, in order to solve the problem that the existing seismic isolation devices cannot provide a gradual damping effect, the present invention provides a linear slide rail seismic isolation system with variable damping, which utilizes the low friction coefficient of the linear slide rail to isolate the conduction of seismic force, and the gradual surface friction design of the linear slide rail of the present invention can provide stronger energy consumption capacity when the displacement of the upper equipment is large, thereby ensuring the vibration isolation effect of the upper equipment.

[0056] The present invention can be applied to cloud computing, the Internet, supercomputing centers, banks, transportation, medical care, education, military, museums, nuclear power plants, international key scientific laboratories, urban gas pipeline networks, high-speed railway bridges and other fields, and can be used to isolate precision equipment in data centers, cultural relics, high-precision laboratory equipment, electromechanical equipment, etc.

[0057] Depending on the different upper equipment, the variable damping linear guide rail isolation system may include one isolation device or multiple isolation devices, which are arranged in parallel and connected by beams. Figure 1 As shown, when multiple isolation devices ( Figure 1 The embodiment shown includes a first seismic isolation device 01 and a second seismic isolation device 02, wherein the plurality of seismic isolation devices are arranged in parallel in the Y-axis direction and connected by a crossbeam 03 in the Y-axis direction, and the upper equipment is mounted on the crossbeam 03. Figure 2 As shown, when a seismic isolation device is used, the upper equipment can be directly installed on the seismic isolation device.

[0058] like Figure 2 、 Figure 3As shown, the overall length of the seismic isolation device in the X-axis direction is greater than its overall width in the Y-axis direction, allowing it to be applied to upper equipment with a rectangular bottom surface. In this case, the displacement distances required to meet the upper equipment's limit values ​​in each direction of motion are equal. In other embodiments, if the upper equipment has a square bottom surface, the overall length of the seismic isolation device in the X-axis direction is equal to its overall width in the Y-axis direction.

[0059] In this embodiment, the length of the X-axis rail assembly 100 in the X-axis direction is greater than the outermost spacing between the two Y-axis rail assemblies in the X-axis direction, the length of the X-axis rail assembly 100 in the X-axis direction is greater than the length of the Y-axis rail assembly in the Y-axis direction, the width of the X-axis rail assembly 100 in the Y-axis direction is less than the outermost spacing between the two Y-axis rail assemblies in the X-axis direction, and the width of the X-axis rail assembly 100 in the Y-axis direction is less than the length of the Y-axis rail assembly in the Y-axis direction. In this way, while cooperating to achieve the support and seismic isolation functions of the upper equipment, the volume and weight of the seismic isolation device can be minimized, and it can also facilitate the installation of cables for the upper equipment.

[0060] like Figures 2 to 5 As shown, the seismic isolation device in the present invention includes an X-axis slide rail assembly 100 and two Y-axis slide rail assemblies arranged on the X-axis slide rail assembly 100. The two Y-axis slide rail assemblies are spaced apart from each other, and the two Y-axis slide rail assemblies are arranged orthogonally to the X-axis slide rail assembly 100. The seismic isolation device can be applied to upper equipment whose center of gravity coincides with the physical center, and can also be applied to seismic isolation equipment whose center of gravity deviates from the physical center. In the present invention, X and Y are two perpendicular directions, that is, the two Y-axis slide rail assemblies are orthogonal to the X-axis slide rail assembly 100. The orthogonal arrangement can make the seismic isolation device move horizontally in any direction, thereby ensuring the stability of the upper equipment and the various movement directions will not interfere with each other.

[0061] exist Figures 2 to 5In the illustrated embodiment, the X-axis slide rail assembly 100 includes a first X-axis slide rail assembly 100a and a second X-axis slide rail assembly 100b connected end to end (the tail end of the first X-axis slide rail assembly 100a is connected to the head end of the second X-axis slide rail assembly 100b). The Y-axis slide rail assembly includes a first Y-axis slide rail assembly 200 and a second Y-axis slide rail assembly 300 (the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300 are parallel). The first Y-axis slide rail assembly 200 is disposed on the first X-axis slide rail assembly 100a, and the second Y-axis slide rail assembly 300 is disposed on the second X-axis slide rail assembly 100b. The first X-axis slide rail assembly 100a and the second X-axis slide rail assembly 100b are symmetric about the Y-direction middle axis of the X-axis slide rail assembly 100, and the two Y-axis slide rail assemblies are symmetric about the Y-direction middle axis of the X-axis slide rail assembly 100, that is: the first X-axis slide rail assembly 100a and the second X-axis slide rail assembly 100b are mirror-distributed along their connection line; the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300 are symmetrically disposed about the connection point of the first X-axis slide rail assembly 100a and the second X-axis slide rail assembly 100b. The first X-axis slide rail assembly 100a, the second X-axis slide rail assembly 100b, the first Y-axis slide rail assembly 200, and the second Y-axis slide rail assembly 300 form a structure shaped like the Chinese character "nian" (卄).[[ID=].]

[0062] Specifically, the X-axis slide rail assembly 100 includes a bottom plate, and the bottom plate is installed on the working base, and the bottom plate is used to carry the entire vibration isolation device and the equipment above. The Y-axis slide rail assembly includes a top plate, and the top plate is used to carry the equipment above. In order to ensure good support ability and stable effect, in the present invention, a support plate for connecting the equipment above is provided above the two Y-axis slide rail assemblies. In the present invention, the width of the support plate 600 is greater than the width of the bottom plate. Through the size design of the support plate 600 and the bottom plate, combined with the "nian" (卄)-shaped design of the entire vibration isolation device, the vibration isolation device in the present invention has stronger bearing capacity, and when applied to electronic instrument equipment such as electromechanical equipment, the wiring of cables can be better carried out.

[0063] Specifically, since the width of the support plate 600 is greater than the width of the bottom plate, there is a gap between the support plate 600 and the bottom plate. The electronic instrument equipment can be wired through this gap, and the cables will not affect the sliding of the vibration isolation device, and it is not easy to occur situations such as pulling, disconnection, and wear. In addition, under the same size, through the size design of the support plate 600 and the bottom plate, combined with the "nian" (卄)-shaped design of the entire vibration isolation device, the bearing capacity of the vibration isolation device in the present invention can be increased from the industry's highest 600 kg to 1500 kg, which is beneficial to ensuring the safety of the equipment above.

[0064] The slide rail provides a guiding function for the upper equipment to slide and reset. The X-axis slide rail assembly 100 further includes a first X-axis slide rail 110 and a second X-axis slide rail 120 provided on the bottom plate, and the first X-axis slide rail 110 and the second X-axis slide rail 120 are arranged side by side; the Y-axis slide rail assembly further includes a first Y-axis slide rail 210 and a second Y-axis slide rail 220 connected to the top plate, and the first Y-axis slide rail 210 and the second Y-axis slide rail 220 are arranged side by side. The four slide rails intersect with each other to form a structure of double "卄" - shaped intersection.

[0065] In the present invention, one or more of the first X-axis slide rail 110, the second X-axis slide rail 120, the first Y-axis slide rail 210, and the second Y-axis slide rail 2, are linear slide rails with different friction coefficients. Preferably, the first X-axis slide rail 110, the second X-axis slide rail 120, the first Y-axis slide rail 210, and the second Y-axis slide rail 220 are all linear slide rails with different friction coefficients, so as to increase the consumption of seismic energy by the shock isolation device in all directions. [[ID=##]] Figure 8 Taking the first X-axis slide rail 110 shown as an example, in the direction extending from the midpoint of the linear slide rail to both ends, the friction coefficient of the surface of the linear slide rail gradually increases. <##

[0066] In one implementation, the surface friction coefficient of the linear slide rail is a linear function of the distance extending from the midpoint of the linear slide rail to both ends. Specifically, it can be formed by superimposing several slide rail segments with different surface friction coefficients, and can also be formed by other means.

[0067] In another preferred implementation, the surface friction coefficient of the linear slide rail is a step function of the distance extending from the midpoint of the linear slide rail to both ends. In addition, as the linear slide rail extends towards both ends, the corresponding lengths of the linear slide rails with different friction coefficients gradually decrease. In the present invention, by setting different coatings on the surface of the linear slide rail, the design of the gradual change of the surface friction coefficient of the linear slide rail is realized. In other embodiments, other methods can also be used to realize the design of the gradual change of the friction coefficient.

[0068] The slider and the slide rail cooperate with each other. The slider provides movement support for the movement of the upper equipment and provides a conversion basis for multi-directional sliding. The first Y-axis slide rail 210 and the first X-axis slide rail 110 are connected by a first slider assembly 400, and the second Y-axis slide rail 220 and the second X-axis slide rail 120 are connected by a second slider assembly 500. The two first slider assemblies 400 and the two second slider assemblies 500 are mutually offset to form four points for offset support of the top plate and the upper equipment. In the present invention, limited by the first X-axis slide rail 110 and the second X-axis slide rail 120, the two first slider assemblies 400 and the two second slider assemblies 500 enclose an isosceles trapezoid, thereby ensuring that the center of gravity of the upper equipment is always on the central axis between the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300, ensuring more balanced force.

[0069] The first slider assembly 400 and the second slider assembly 500 each include a slider connector, a lower slider located below the slider connector, and an upper slider located above the slider connector. The slider connector is further provided with a push rod connector, the end of which protrudes and connects to the X-axis reset member 130 in the X-axis slide rail assembly 100 / the Y-axis reset member 230 in the Y-axis slide rail assembly. The first slider assembly 400 and the second slider assembly 500 are reset by the force exerted by the X-axis reset member 130 / the Y-axis reset member 230 on the push rod connector. Preferably, the push rod connector includes a push rod connecting portion and a push rod swing arm, the push rod connecting portion being connected to the slider connector, and the push rod swing arm being connected to the X-axis reset member 130 / the Y-axis reset member 230. The protruding design of the push rod swing arm allows interaction with the X-axis reset member 130 / the Y-axis reset member 230 without affecting the normal movement of the first slider assembly 400 and the second slider assembly 500.

[0070] Specifically, such as Figure 7 、 Figure 9 As shown, the first slider assembly 400 is used to connect the first X-axis slide rail 110 and the first Y-axis slide rail 210, wherein the first slider assembly 400 includes a first slider connector 410, a first lower slider 420, and a first upper slider 430. The first lower slider 420 is assembled on the lower side of the first slider connector 410 and connected to the first X-axis slide rail 110, and the first upper slider 430 is assembled on the upper side of the first slider connector 410 and connected to the first Y-axis slide rail 210. A first push rod connecting portion 440 is assembled on the side of the first slider connector 410, and its outer end protrudes downward to form a first push rod swing arm 441. The first push rod swing arm 441 is connected to the movable end of the X-axis reset member 130.

[0071] Specifically, such as Figure 7 、 Figure 13 、 Figure 14 As shown, the second slider assembly 500 is used to connect the second X-axis slide rail 120 and the second Y-axis slide rail 220, wherein the second slider assembly 500 includes a second slider connector 510, a second lower slider 520, and a second upper slider 530. The second lower slider 520 is assembled on the lower side of the second slider connector 510 and connected to the second X-axis slide rail 120, and the second upper slider 530 is assembled on the upper side of the second slider connector 510 and connected to the second Y-axis slide rail 220. The second push rod connecting portion 540 is assembled on the side of the second slider connector 510, and its outer end protrudes downward to form a second push rod swing arm 541, which is connected to the movable end of the Y-axis reset member 230.

[0072] Through the structural design of the first slider assembly 400 and the second slider assembly 500, the present invention can, on the one hand, more conveniently assemble the slider assembly with the corresponding slide rail assembly, thereby reducing the difficulty of installation; on the other hand, compared with the existing slider assembly upper and lower slider welding connection method, the present invention does not require welding and can be installed and fixed only by bolts, thereby reducing the difficulty of operation. At the same time, it has lower performance requirements for each connecting part and lower requirements for the ability of the assembly workers.

[0073] The first slider assembly 400 and the second slider assembly 500 are both provided with a slider scraper (eg Figure 9 The first slider assembly 400 is connected to the first X-axis rail 110 and the first Y-axis rail 210 via the slider scraper 431, and the second slider assembly 50 is connected to the second X-axis rail 120 and the second Y-axis rail 220 via the slider scraper. The slider scraper can clean oil stains, dust, etc. from the surfaces of the first X-axis rail 110, the second X-axis rail 120, the first Y-axis rail 210, and the second Y-axis rail 220 during the movement of the first slider assembly 400 and the second slider assembly 500, thereby ensuring smooth sliding between the sliders and the rails.

[0074] Preferably, the slider scraper is made of a modified polyurethane material, which can also provide a friction damping effect: the modified polyurethane material causes the friction force between the slider scraper and the corresponding X-axis slide rail to be positively correlated with the movement speed of the slider assembly relative to the X-axis slide rail, and the friction force between the slider scraper and the corresponding Y-axis slide rail to be positively correlated with the movement speed of the slider assembly relative to the Y-axis slide rail. That is, as the relative displacement speed between each slider and the corresponding slide rail increases, its friction damping force gradually increases. Preferably, the friction damping force between the slider scraper and the corresponding slide rail increases linearly with the relative displacement speed between the slider scraper and the corresponding slide rail at a 45-degree slope.

[0075] like Figure 6 、 Figure 7 、 Figure 13 As shown, the X-axis reset member 130 is disposed on the base plate and is connected to the first slider assembly 400 to reset the first slider assembly 400. Specifically, when the first slider assembly 400, together with the Y-axis rail assembly, and the upper equipment, is affected by an earthquake or other vibration and deviates from the equilibrium position of the first slider assembly 400 on the X-axis, the X-axis reset member 130 drives the first slider assembly 400, together with the Y-axis rail assembly, and the upper equipment, to return to the equilibrium position on the X-axis.

[0076] The Y-axis reset member 230 is disposed on the top plate and is connected to the second slider assembly 500 to reset the second slider assembly 500. Specifically, when the second slider assembly 500, together with the Y-axis rail assembly, and the upper equipment, is affected by an earthquake or other vibration and deviates from the equilibrium position of the second slider assembly 500 on the Y-axis, the Y-axis reset member 230 will reset the second slider assembly 500, together with the Y-axis rail assembly, and the upper equipment, to the equilibrium position on the Y-axis.

[0077] The X-axis slide rail assembly 100 may be provided with an X-axis reset chamber 131 for accommodating the X-axis reset member 130. The X-axis reset chamber 131 is located on the bottom plate and has an opening for the first slider assembly 400 to extend into and connect with the X-axis reset member 130, providing space for the first slider assembly 400 to slide back and forth in the X-direction. The X-axis reset chamber 131 can protect the X-axis reset member 130 within the X-axis reset chamber 131 and provide guidance for the restoring force of the X-axis reset member 130. Similarly, the Y-axis slide rail assembly may also be provided with a Y-axis reset chamber 231 for accommodating the Y-axis reset member 230. The Y-axis reset chamber 231 is located on the top plate and has an opening for the second slider assembly 500 to extend into and connect with the Y-axis reset member 230, providing space for the second slider assembly 500 to slide back and forth in the Y direction. The Y-axis reset chamber 231 can protect the Y-axis reset member 230 within the Y-axis reset chamber 231 and provide a guide for the restoring force of the Y-axis reset member 230. The present invention can also make the structure of the X-axis slide rail assembly 100 and the Y-axis slide rail assembly more compact through the X-axis reset chamber 131 and the Y-axis reset chamber 231, and more conveniently assemble the X-axis reset member 130 and the first slider assembly 400, and also facilitate the assembly of the Y-axis reset member 230 and the second slider assembly 500.

[0078] Preferably, the X-axis reset member 130 may include a first X-axis reset member 130a and a second X-axis reset member 130b, the first slider assembly 400 is located between the first X-axis reset member 130a and the second X-axis reset member 130b, and the first slider assembly 400 is respectively connected to the movable end of the first X-axis reset member 130a and the movable end of the second X-axis reset member 130b, and the fixed end of the first X-axis reset member 130a and the fixed end of the second X-axis reset member 130b are both connected to the X-axis slide rail assembly 100 (referring to the X-axis reset chamber 131, the same below). Similarly, the Y-axis reset member 230 may also include a first Y-axis reset member 230a and a second Y-axis reset member 230b, and the second slider assembly 500 is respectively connected to the movable end of the first Y-axis reset member 230a and the movable end of the second Y-axis reset member 230b, and the fixed end of the first Y-axis reset member 230a and the fixed end of the second Y-axis reset member 230b are both connected to the Y-axis slide rail assembly (referring to the Y-axis reset chamber 231, the same below).

[0079] Based on the above preferred scheme, the fixed end of the first X-axis reset member 130a and the fixed end of the second X-axis reset member 130b in the present invention can directly abut against the X-axis slide rail assembly 100, or can be fixed on the X-axis slide rail assembly 100; the movable end of the first X-axis reset member 130a and the movable end of the second X-axis reset member 130b can directly abut against the first slider assembly 400, or can be fixed on the first slider assembly 400; the fixed end of the first Y-axis reset member 230a and the fixed end of the second Y-axis reset member 230b can directly abut against the Y-axis slide rail assembly, or can be fixed on the Y-axis slide rail assembly; the movable end of the first Y-axis reset member 230a and the movable end of the second Y-axis reset member 230b can directly abut against the second slider assembly 500, or can be fixed on the second slider assembly 500.

[0080] In the present invention, in the initial state, both the X-axis reset member 130 and the Y-axis reset member 230 are springs in a compressed state, and when the first slider assembly 400 moves to the extreme position at one end in the X direction, the X-axis reset member 130 located in the direction of the end is still in a compressed state, and the X-axis reset member 130 on the other side changes from the compressed state to the natural state and remains in the natural state; when the second slider assembly 500 moves to the extreme position at one end in the Y direction, the Y-axis reset member 230 located in the direction of the end is still in a compressed state, and the Y-axis reset member 230 on the other side changes from the compressed state to the natural state and remains in the natural state. On the one hand, the spring in the compressed state can ensure that the support plate 600 and the upper equipment are at the center of the X-axis slide rail assembly 100 and the center of the two Y-axis slide rail assemblies when they are not affected by external forces, so that the upper equipment remains balanced; on the other hand, the spring in the compressed state can prevent the X-axis reset component 130 and the Y-axis reset component 230 from undergoing state changes of "tension state / natural state-compression state" and "compression state-tension state / natural state" when the upper equipment is in an earthquake, thereby affecting the stability of the upper equipment.

[0081] Preferably, the X-axis reset member 130 is located between the first X-axis slide rail 110 and the second X-axis slide rail 120, so that the reset point of the X-axis reset member 130 on the first slider assembly 400 is at the center of the X-axis, making the reset force more balanced. The Y-axis reset member 230 is oriented between the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300, so that the two first Y-axis reset members 230a and the second Y-axis reset member 230b are opposite each other. The Y-direction reset force on the upper device is closer to the center of the upper device, making the force more stable.

[0082] like Figures 15 to 17 As shown, in another embodiment, the connection relationship of the X-axis reset member and the connection relationship of the Y-axis reset member have different designs. Figures 2 to 14The difference from the illustrated embodiment is that, in this embodiment, the X-axis reset member 130 is located between the first X-axis slide rail 110 and the second X-axis slide rail 120 , and the Y-axis reset member 230 is located between the first Y-axis slide rail 210 and the second Y-axis slide rail 220 .

[0083] Specifically, the X-axis slide rail assembly 100 is provided with an X-axis reset guide rod 132, and the X-axis reset member 130 is sleeved on the X-axis reset guide rod 132, so that the X-axis reset guide rod 132 guides the X-axis reset member 130. The Y-axis slide rail assembly is provided with a Y-axis reset guide rod 232, and the Y-axis reset member 230 is sleeved on the Y-axis reset guide rod 232, so that the Y-axis reset guide rod 232 guides the Y-axis reset member 230. This structural design not only allows the X-axis reset member and the Y-axis reset member to compress and rebound in a predetermined direction, but also reduces wear and noise caused by friction between the X-axis reset member and the Y-axis reset member and the chamber structure during compression and rebound.

[0084] Correspondingly, the push rod swing arm of the slider assembly is provided with a swing arm slot corresponding to the reset guide rod, which can make the push rod swing arm move along the reset guide rod, and on the other hand, the protrusions on both sides of the swing arm slot can form a resistance to the X-axis reset member and the Y-axis reset member. Figure 17 As shown, a first swing arm sliding groove 4441 is provided at the end of the first swing arm push rod 441 , and the second swing arm push rod has a similar structure, which will not be described in detail here.

[0085] In order to ensure the safety of the entire seismic isolation device and the upper equipment, in the present invention, one side / both sides of the first X-axis slide rail 1100, one side / both sides of the second X-axis slide rail 120, one side / both sides of the first Y-axis slide rail 210, and one side / both sides of the second Y-axis slide rail 220 are all provided with limit members.

[0086] In a specific embodiment, a first X-axis stopper 111 is provided at one end of the first X-axis slide rail 110 in the first X-axis slide rail assembly 100a and the other end of the first X-axis slide rail 110 in the second X-axis slide rail assembly 100b, a second X-axis stopper 120 is provided at the other end of the second X-axis slide rail 120 in the first X-axis slide rail assembly 100a and one end of the second X-axis slide rail 120 in the second X-axis slide rail assembly 100b, a first Y-axis stopper 211 is provided at one end of the first Y-axis slide rail 210 in the first Y-axis slide rail assembly 200 and one end of the first Y-axis slide rail in the second Y-axis slide rail assembly 300, and a second Y-axis stopper 221 is provided at the other end of the second Y-axis slide rail 220 in the first Y-axis slide rail assembly 200 and the other end of the second Y-axis slide in the second Y-axis slide rail assembly 300. The eight limiting members limit the four movement directions of the upper device respectively, so that the two first slider assemblies 400 are limited when they move to the two extreme positions in the X direction and the two second slider assemblies 500 are limited when they move to the two extreme positions in the Y direction.

[0087] In the present invention, the bottom plate, first X-axis rail 110, second X-axis rail 120, and X-axis reset member 130 all extend in the X direction, and the top plate, first Y-axis rail 210, second Y-axis rail 220, and Y-axis reset member 230 all extend in the Y direction. Because the first Y-axis rail assembly 200 and the second Y-axis rail assembly 300 are symmetrical, the first Y-axis rail 210, first Y-axis stopper 211, second Y-axis rail 220, second Y-axis stopper 221, and Y-axis reset member 230 in the first Y-axis rail assembly 200 are symmetrical to the first Y-axis rail, first Y-axis stopper, second Y-axis rail, second Y-axis stopper, and Y-axis reset member in the second Y-axis rail assembly 300. This structural design ensures that the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300 can provide more balanced support and isolation for the support plate 600 and the isolation device located on the upper side of the support plate 600 .

[0088] like Figures 2 to 7 、 Figures 10 to 12 As shown, in a preferred embodiment, the seismic isolation device further includes an auxiliary function assembly 610. The auxiliary function assembly 610 is used to lock the state of the seismic isolation device without affecting the isolation of seismic forces, thereby preventing accidental touches or other small vibrations from causing shaking of the upper equipment. In this embodiment, the X-axis slide rail assembly 100 is mounted on the work base for fixing, and the support plate 600 is connected to the upper equipment for providing buffering for the upper equipment. Therefore, the auxiliary function assembly 610 is disposed between the support plate 600 and the X-axis slide rail assembly 100.

[0089] The auxiliary function assembly 610 includes a first connector 611 connected to the X-axis slide rail assembly 100, a second connector 612 connected to the support plate 600, and a stop pin 613 that passes through the second connector 612 and is positionally connected to the first connector 611. A gap is provided between the first connector 611 and the second connector 612, and the stop pin 613 can intersect with the first connector 611 after passing through the second connector 612. The first connector 611 can be installed in a vacant position within the X-axis slide rail assembly 100 where there is mounting space, thereby significantly saving space. The second connector 612 can be connected to the side of the support plate 600 to avoid affecting the reset operation of the auxiliary function assembly 610.

[0090] In the present invention, the bottom of the limit pin 613 is a ball head 6133 with an arc-shaped protrusion, and the top of the first connecting member 611 is provided with a downwardly recessed slot 6111. When the limit pin 613 is in the initial position, the ball head 6133 is recessed in the slot 6111, so as to realize the braking and limiting effect of the auxiliary functional component 610 on the support plate 600.

[0091] Specifically, the limit pin 613 passes through the compression spring 614 and the through hole 6121 on the second connecting member 612 in sequence, and then passes through the second connecting member 612. A retaining spring 615 is provided on the side wall of the limit pin 613 near the lower end. The limit pin 613 has a braking position and a release position relative to the second connecting member 612: in the initial state, the limit pin 613 is in the braking position, at which time the compression spring 614 is in the compression limit position, and a gap is provided between the retaining spring 615 and the lower end surface of the second connecting member 612; in the post-movement state, the limit pin 613 is in the release position, at which time the limit pin 613 is displaced upward relative to the braking position under the action of the compression spring 614 until the retaining spring 615 abuts against the lower end surface of the second connecting member 612, and the retaining spring 615 limits the movement position of the limit pin 613.

[0092] When the limiting pin 613 is in the initial position, the compression spring 614 is in a compressed state. To ensure that the limiting pin 613 can maintain the initial position, the second connecting member 612 of the present invention is further provided with a bolt-type positioning bead 617. The bolt-type positioning bead 617 passes through the second connecting member 612 and engages with the limiting pin 613, so that the limiting pin 613 can maintain the initial position and is limitedly connected to the first connecting member 611 in the initial position. When the bolt-type positioning bead 617 is separated from the limiting pin 613, the limiting pin 613 moves upward under the action of the compression spring 614. Preferably, the limiting pin 613 is provided with an inwardly concave second limiting groove 6132. The front end of the bolt-type positioning bead 617 passes through the second limiting hole 6123 of the second connecting member 612 and engages with the second limiting groove 6132.

[0093] The bolt-type positioning bead 617 of the present invention includes a positioning bolt 6171, the front end of which is provided with a groove, a positioning spring 6172 and a positioning bead 6174 being disposed within the groove, and the positioning spring 6172 being in a compressed state so that the front end of the positioning bead 6174 protrudes from the groove and engages with the limiting pin 613. Preferably, the front end of the groove is provided with an inner screw hole, the inner diameter of which is smaller than the diameter of the positioning bead 6174, so as to prevent the positioning bead 6174 from falling out of the groove. A positioning pad 6173 (the front end of the positioning pad 6173 may be provided with an arc-shaped receiving groove) may also be provided within the groove, the positioning pad 6173 being located between the positioning spring 6172 and the positioning bead 6174. The positioning pad 6173 is used to isolate the positioning spring 6172 from the positioning bead 6174, thereby ensuring a balance of elastic force between the positioning bead 6174 and the positioning spring 6172 and preventing the positioning bead 6174 from shifting within the entire groove.

[0094] In the present invention, the second connecting member 612 is provided with a first limiting hole 6122, and the limiting pin 613 is provided with an inwardly concave first limiting groove 6131. ​​The set screw 616 passes through the first limiting hole 6122 of the second connecting member 612 and engages with the first limiting groove 6131. ​​The fastening between the set screw 616 and the limiting pin 613 prevents the limiting pin 613 from detaching during transportation and installation of the seismic isolation device when the impact force is greater than the force exerted on the limiting pin 613 by the bolt-type positioning bead 617, thereby ensuring more reliable stability of the seismic isolation device.

[0095] Preferably, the set screw 616 is spirally connected to the first limiting hole 6122 on the second connecting member 612. When the set screw 616 is needed to tighten the limiting pin 613, the set screw 616 is turned forward to engage with the limiting pin 613; when the seismic isolation device is used normally, the set screw 616 is turned backward to disengage its front end from the limiting pin 613, which makes the operation more convenient.

[0096] like Figure 12As shown, during the implementation of the auxiliary function component 610, in the initial state, the bolt-type positioning bead 617 limits the position of the limit pin 613, so that when the entire seismic isolation device encounters accidental touch or a small earthquake, the Y-axis slide rail assembly, support plate 600, and the upper equipment will not move, ensuring the safety of the upper equipment. When a large earthquake occurs, the seismic energy causes the upper equipment to shake and exceeds the limiting effect of the bolt-type positioning bead 617 on the limit pin 613. The limit pin 613 moves upward under the action of the compression spring 614. At this time, the limit pin 613 separates from the first connecting member 611, allowing the seismic isolation device to absorb the seismic wave velocity and achieve the seismic isolation effect. After the earthquake occurs, the second connecting member 612 returns to a position aligned with the first connecting member 611. At this time, since the limit pin 613 is in the released state, the manual or other automated structure (such as an electromagnet, etc.) presses down the limit pin 613 to achieve a braking connection state between the first connecting member 611 and the second connecting member 612.

[0097] like Figures 18 to 23 As shown, in the present invention, the upper device is displaced by the influence of the seismic wave. It can not only move left and right in the X direction, but also move forward and backward in the Y direction, and can also move circumferentially under the force in the XY direction. The upper device is assumed to be a device with uniform mass, and its center of gravity is located at its physical center. The center of gravity of the upper device is located in the middle position of the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300, and is located at the center position of the X-axis slide rail assembly 100. The displacement of the upper device in the X direction and the Y direction are analyzed respectively:

[0098] When the upper device is subjected to an X-direction force that exceeds the braking force of the auxiliary function assembly 610, the upper device, together with the support plate 600, the first Y-axis slide rail assembly 200, the second Y-axis slide rail assembly 300, the two first slider assemblies 400, and the two second slider assemblies 500, all displace in the X-direction. Since the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300 move synchronously with the upper device, after the upper device is displaced, its center of gravity remains in the middle position between the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300, and this position remains within the support range of the X-axis slide rail assembly 100. Therefore, the support position of the seismic isolation device for the upper device remains within its support range, will not overturn, and has higher structural stability.

[0099] When the upper device is subjected to a force in the Y direction and the force exceeds the braking force of the auxiliary function component 610, the upper device together with the support plate 600, the first Y-axis slide rail assembly 200, the second Y-axis slide rail assembly 300, the two first slider assemblies 400, and the two second slider assemblies 500 are all displaced in the Y direction. Since the two first slider assemblies 400 and the two second slider assemblies 500 will move synchronously with the upper device, after the upper device is displaced, its center of gravity position is still on the central axis of the first Y-axis slide rail assembly 200 and the second Y-axis slide rail assembly 300, and this position is still on the central axis of the X-axis slide rail assembly 100; since the center of gravity position of the upper device deviates from the support center of the X-axis slide rail assembly 100, a torque force with a force arm will be generated on the support center position of the two first slider assemblies 400 and the two second slider assemblies 500, and since the two first slider assemblies 400 and the two second slider assemblies 500 are separated from each other and set separately, therefore (with Figure 23 For example, the two second slider assemblies 500 located on the same straight line are subjected to compression, and the two first slider assemblies 400 located on the same straight line are subjected to tension. The slider system composed of the four slider assemblies has high pressure-bearing and load-bearing capacity, the seismic isolation device has high pressure resistance and torque resistance, and the overall load-bearing capacity of the seismic isolation device is high.

[0100] In terms of the overall aspect, the present invention utilizes the low friction coefficient and other characteristics of the linear slide rail to achieve the function of isolating the conduction of seismic forces, and utilizes mutually intersecting linear slide rails to achieve the function of horizontal movement in any direction. In addition, the reset member is used to drive the upper equipment to reset and achieve a damping effect.

[0101] In terms of details, the present invention utilizes four mutually offset and separated support points to achieve stable support for the upper equipment and provide strong anti-bending, anti-torsion and anti-overturning capabilities. At the same time, the present invention can also provide a bearing capacity far exceeding that of existing seismic isolation devices; the present invention can make the device structure more compact and reduce the difficulty of system design and installation through the design of the reset parts and their connection relationships; the present invention can provide more stable support for the upper equipment and offset the effects of seismic forces through the structural design of the slide rail; the present invention can make the scraper more sensitive to speed through the material selection, so that the greater the speed, the greater the resistance; the present invention can reduce the difficulty of installing each slider and reduce the ability requirements of the installation workers through the structural design of the slider assembly.

[0102] This paper uses the established vibration isolation device model and the finite element model of the upper equipment to perform simulations using the finite element analysis model SAP2000 software. Using motion acceleration as the analysis variable, the vibration isolation efficiency under different seismic waves is obtained, as shown in the following table:

[0103] Input seismic waves <![CDATA[Input maximum acceleration (cm / s 2 )]]> <![CDATA[Output maximum acceleration (cm / s 2 )]]> Isolation efficiency Artificial Wave 1 109 32 71％ Artificial Wave 2 545 60 89％ Artificial Wave 3 909 63 93％

[0104] It can be seen from the above table that the vibration isolation device of the present invention has an excellent absorption effect on the acceleration of seismic waves and can provide vibration isolation protection for the upper equipment.

[0105] Based on the structure of the above-mentioned seismic isolation device, the present invention also provides a design and evaluation method for a seismic isolation device. It should be pointed out that the design and evaluation method is only a design guide and is not a detailed calculation process. Certain parameters are ignored or their results are rounded to integers (such as the self-weight of the seismic isolation device, etc.) during the design guidance process.

[0106] During the design and evaluation process:

[0107] S1. First, establish a finite element model of the upper equipment; then, based on the size of the upper equipment, preliminarily formulate the dimensions of the various components of the seismic isolation device, including the dimensions of the top plate, bottom plate, support plate, each guide rail, each spring, etc., which must ensure that the maximum displacement of the upper equipment on the guide rail is greater than the maximum allowable displacement of the upper equipment during an earthquake.

[0108] S2. Based on the relevant requirements of GB50011-2001 "Code for Seismic Design of Buildings", which is the building load code, determine the horizontal seismic influence coefficient α, damping coefficient B, etc. of the upper equipment installation location.

[0109] S3. When a compressed spring is used as a reset element, the initial length, minimum effective friction length, and maximum limit length of the compressed spring are used to design the spring material, instantaneous length, free length, mean diameter, wire diameter, number of effective coils, etc., and the spring stiffness is designed.

[0110] In the present invention, the X-axis reset member and the Y-axis reset member can be springs of equal stiffness or springs of variable stiffness. When the X-axis reset member and the Y-axis reset member are springs of variable stiffness, their stiffness increases as the compression amount of the spring increases.

[0111] S4. Use the following formula to calculate the effective stiffness K of the seismic isolation device.

[0112] F 复位 =(L 复位1 -L 复位0 )×K 复位 +P 复位

[0113] Among them, F 复位 is the restoring force of the reset member in the X or Y direction, L 复位1 L is the instantaneous length of the reset element in the X or Y direction. 复位0 K is the free length of the reset member in the X or Y direction, 复位 is the stiffness of the reset member in the X or Y direction, P 复位 It is the initial tension of the reset member in the X or Y direction.

[0114] F 摩擦 =μ×(W+W0)+f 刮

[0115] Among them, F 摩擦 is the sliding friction force of a slider in the X or Y direction, μ is the sliding friction coefficient of a slider in the X or Y direction, W is the weight of the upper device, W0 is the weight of the support plate, f 刮 The resistance of each scraper in the X or Y direction.

[0116] Where K is the effective stiffness of the isolation device, and d is the spring wire diameter of the reset element.

[0117] S5. Based on the obtained effective stiffness K of the seismic isolation device, the weight W of the upper equipment, the deadweight W0 of the support plate, etc., calculate the seismic isolation period T of the seismic isolation device:

[0118]

[0119] S6. Based on factors such as the motion acceleration and displacement of the upper equipment under the isolation device, determine whether the isolation device meets the requirements, among which the motion acceleration of the upper equipment under the isolation device is the primary consideration.

[0120] Through the above method, the effectiveness of the seismic isolation device can be designed and evaluated based on the local seismic environment and the relevant requirements of the upper equipment.

[0121] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0122] The above is an exemplary description of the patent of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the patent 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 patent of the present invention, or the concept and technical solution of the patent of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A linear guide rail isolation system with variable damping, characterized in that: Include one or more seismic isolation devices; The seismic isolation device includes an X-axis slide rail assembly and a Y-axis slide rail assembly provided on the X-axis slide rail assembly, wherein the Y-axis slide rail assembly is arranged orthogonally to the X-axis slide rail assembly; The X-axis slide rail assembly includes a bottom plate, an X-axis slide rail and an X-axis reset member provided on the bottom plate; the Y-axis slide rail assembly includes a top plate, a Y-axis slide rail and a Y-axis reset member connected to the top plate; the Y-axis slide rail and the X-axis slide rail are connected via a slider assembly; the slider assembly is connected to the X-axis reset member and is driven by the X-axis reset member to return to its original position along the X-axis slide rail; the slider assembly is connected to the Y-axis reset member and is driven by the Y-axis reset member to return to its original position along the Y-axis slide rail; The X-axis slide rail and the Y-axis slide rail are both linear slide rails with different friction coefficients, and the surface friction coefficient of the linear slide rail gradually increases from the midpoint of the linear slide rail to its two ends; The slider assembly is provided with a slider scraper, and the slider assembly contacts the X-axis slide rail and the Y-axis slide rail through the slider scraper. The slider scraper is made of modified polyurethane material, so that the friction force between the slider scraper and the X-axis slide rail is positively correlated with the movement speed of the slider assembly relative to the X-axis slide rail, and the friction force between the slider scraper and the Y-axis slide rail is positively correlated with the movement speed of the slider assembly relative to the Y-axis slide rail.

2. The variable damping linear guide rail seismic isolation system according to claim 1, characterized in that: The surface friction coefficient of the linear slide rail and the distance extending from the midpoint of the linear slide rail to its two ends are linear functions; or the surface friction coefficient of the linear slide rail and the distance extending from the midpoint of the linear slide rail to its two ends are step functions.

3. The variable damping linear guide rail seismic isolation system according to claim 1, characterized in that: The X-axis slide rail assembly includes a first X-axis slide rail assembly and a second X-axis slide rail assembly connected in sequence, and the Y-axis slide rail assembly includes a first Y-axis slide rail assembly and a second Y-axis slide rail assembly arranged side by side. The first Y-axis slide rail assembly is arranged on the first X-axis slide rail assembly and is arranged orthogonally to the first X-axis slide rail assembly, and the second Y-axis slide rail assembly is arranged on the second X-axis slide rail assembly and is arranged orthogonally to the second X-axis slide rail assembly.

4. The variable damping linear guide rail seismic isolation system according to claim 3, characterized in that: The X-axis slide rail includes a first X-axis slide rail and a second X-axis slide rail arranged side by side, and the Y-axis slide rail assembly includes a first Y-axis slide rail and a second Y-axis slide rail arranged side by side, the first Y-axis slide rail is connected to the first X-axis slide rail via a first slider assembly, and the first slider assembly is connected to the X-axis reset member, the second Y-axis slide rail is connected to the second X-axis slide rail via a second slider assembly, and most of the second slider assemblies are connected to the Y-axis reset member; The two first slider assemblies and the two second slider assemblies are staggered with each other to form four points for staggered support of the top plate and the upper equipment.

5. The variable damping linear guide rail seismic isolation system according to claim 1, characterized in that: A support plate for connecting to the upper equipment is provided above the Y-axis slide rail assembly, and an auxiliary function component is provided between the support plate and the X-axis slide rail assembly. The auxiliary function component includes a first connecting member connected to the X-axis slide rail assembly, a second connecting member connected to the support plate, a limit pin passing through the second connecting member and limit-connected to the first connecting member, and a bolt-type positioning bead is further provided on the second connecting member. After passing through the second connecting member, the bolt-type positioning bead is engaged with the limit pin, so that the limit pin is limit-connected to the first connecting member in the initial position.

6. The variable damping linear guide rail seismic isolation system according to claim 5, characterized in that: The limiting pin is provided with a first concave limiting groove, and the set screw passes through the second connecting member and is engaged with the first limiting groove.

7. The variable damping linear guide rail seismic isolation system according to claim 5, characterized in that: The limit pin passes through the compression spring and the through hole on the second connecting member in sequence and then passes out of the second connecting member. A retaining spring is provided on the side wall of the limit pin near the lower end. When the limit pin is in the initial state, a gap is provided between the retaining spring and the lower end surface of the second connecting member.

8. The variable damping linear guide rail seismic isolation system according to claim 1, characterized in that: The X-axis slide rail assembly is provided with an X-axis reset chamber for accommodating the X-axis reset member, and the Y-axis slide rail assembly is provided with a Y-axis reset chamber for accommodating the Y-axis reset member; Alternatively, the X-axis slide rail assembly is provided with an X-axis reset guide rod for guiding the X-axis reset member, and the X-axis reset member is sleeved on the X-axis reset guide rod; the Y-axis slide rail assembly is provided with a Y-axis reset guide rod for guiding the Y-axis reset member, and the Y-axis reset member is sleeved on the Y-axis reset guide rod.

9. The variable damping linear slide rail seismic isolation system according to claim 1, characterized in that: The slider assemblies all include a slider connector, a lower slider located at the lower side of the slider connector, and an upper slider located at the upper side of the slider connector. A push rod connector is also provided on the slider connector, and the end of the push rod connector protrudes and is connected to the X-axis reset member / the Y-axis reset member.

Images