Vertical vibration isolation device and vibration double-control support

Abstract

The utility model relates to the technical field of vibration control, and provides a vertical vibration isolation device and a vibration double-control support. The vertical vibration isolation device comprises a disc spring set and a supporting cylinder, the disc spring set comprises a plurality of disc springs arranged in a stacked mode, and a first mirror surface stainless steel sheet is arranged between every two adjacent disc springs. The disc spring set is arranged on the outer side of the supporting cylinder in a sleeving mode. A plurality of overlapped disc springs are used for providing sufficient bearing force, contact surfaces among the disc springs are fully lubricated and friction among the disc springs is reduced by utilizing the characteristics of high strength, small friction coefficient and stable chemical property of mirror surface stainless steel, so that the dynamic stiffness of the disc spring group is reduced, the vibration isolation capability is improved, and a supporting cylinder is matched, so that the vibration isolation effect is improved. Under the condition that friction is reduced, displacement between the disc springs can be effectively prevented, and the disc spring set is prevented from swinging and overturning, so that the dynamic stiffness is improved, the vibration isolation capacity and effectiveness are further guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration control, in particular to a vertical vibration isolation device and a vibration-vibration dual-control support. Background Art

[0002] In recent years, to adapt to rapid urbanization and conserve land resources, major cities across China have constructed numerous rail superstructures. These structures often suffer from vertical structural transformation issues, which negatively impact seismic performance. Furthermore, vibrations from subway operation can significantly disrupt the work and living areas of residents within these structures. Therefore, the development of three-dimensional, dual-control vibration bearings that isolate vertical subway vibrations holds significant economic and social significance.

[0003] At present, in order to achieve the purpose of dual control of horizontal earthquake and vertical vibration, the traditional disc spring group and friction pendulum combination, thick laminated rubber bearing and friction pendulum combination, air spring and lead rubber bearing combination, etc. have been proposed. However, the existing disc spring group has insufficient vertical bearing capacity and the structure is prone to overturning and swaying. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the disc spring group has insufficient vertical bearing capacity and vibration isolation capacity and the structure is prone to overturning and swinging, and to provide a vertical vibration isolation device and a vibration dual-control support.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, the present invention provides a vertical vibration isolation device, comprising:

[0007] The disc spring assembly includes a plurality of disc springs arranged in a stacked manner, with a first mirror-finished stainless steel sheet provided between two adjacent disc springs;

[0008] The support tube is provided with the disc spring assembly sleeved on the outside of the support tube.

[0009] A vertical vibration isolation device described in the utility model is adopted, which adopts several overlapping disc springs to provide sufficient bearing capacity. The high strength, low friction coefficient and stable chemical properties of mirror stainless steel are utilized to fully lubricate the contact surfaces between the disc springs, reduce the friction between the disc springs, thereby reducing the dynamic stiffness of the disc spring group and improving the vibration isolation capability. In conjunction with the support tube, it can effectively prevent the disc springs from shifting while reducing friction, and avoid the disc spring group from swaying or overturning, thereby improving the dynamic stiffness, further ensuring the vibration isolation capability and effectiveness, and extending the service life.

[0010] Preferably, two first mirror-finished stainless steel sheets are provided between two adjacent disc springs, and a first PTFE component is provided between the corresponding two first mirror-finished stainless steel sheets.

[0011] The provision of PTFE (polytetrafluoroethylene) components further reduces the dynamic stiffness of the disc spring group, thereby improving the vibration isolation capability.

[0012] Further preferably, the first mirror-finished stainless steel sheet comprises a plurality of sector-shaped sheets.

[0013] The above-mentioned setting method is conducive to being as close as possible to the surface of the disc spring, so that the disc spring can be in contact with the mirror stainless steel and PTFE components as much as possible, which is conducive to reducing the friction between the disc springs and reducing the dynamic stiffness as much as possible.

[0014] Preferably, there are several disc spring groups, and two adjacent disc spring groups are arranged in a matched manner. An inner loading ring and an outer loading ring are respectively provided on both sides of the disc spring group.

[0015] By adopting the above-mentioned setting method, the loading ring with a certain thickness allows the vertical vibration isolation device to continue to deform after the disc spring is flattened, thereby increasing the deformation of the device to better realize the vertical large-amplitude hysteresis under the action of earthquake motion, etc.; in addition, since the elastic restoring force of the disc spring will continue to increase with the increase of deformation, the series-connected disc spring group can make the device have a lower vertical stiffness, thereby avoiding large static displacement and significant swinging and overturning phenomena, and can also reduce the starting frequency of vibration isolation and improve the vibration isolation effect.

[0016] Further preferably, the support tube includes a detachably connected cylinder body and a mounting seat; or, the support tube includes a cylinder body, an extension tube and a mounting seat, and both ends of the extension tube are detachably connected to the cylinder body and the mounting seat respectively.

[0017] It is convenient for installing, repairing and replacing the disc spring, the first mirror stainless steel sheet, the first PTFE component, the inner loading ring and the outer loading ring. An extension tube is provided to facilitate adding more disc spring groups and the number of disc springs in the disc spring group as needed.

[0018] In a second aspect, the present invention further provides a vibration-vibration dual-control bearing, comprising a horizontal vibration isolation bearing and a vertical vibration isolation device as described above.

[0019] The dual-control vibration support described in the utility model can be used to isolate earthquakes in the horizontal direction and to isolate rail transit vibrations vertically, thereby realizing dual-effect control of vibrations. In addition, the vertical vibration isolation device has high bearing capacity and low stiffness, making vertical vibration control more reliable and more efficient, and also getting rid of the contradiction between the bearing capacity and vibration isolation effect of the vertical vibration isolation system.

[0020] Preferably, the horizontal seismic isolation bearing is a laminated rubber bearing, which is stacked with the vertical vibration isolation device. One end of the support tube of the vertical vibration isolation device is connected to the horizontal seismic isolation bearing, and the other end is slidably connected to the first connecting plate. A second mirror stainless steel sheet is provided between the first connecting plate and the corresponding end surface of the support tube.

[0021] The laminated rubber bearing has a large vertical stiffness, which is convenient for stably supporting the weight of the superstructure. The vertical vibration isolation device as a whole is slidingly connected to the first connecting plate, and a second mirror stainless steel sheet is provided on the contact surface to release the slight horizontal deformation caused by the laminated rubber bearing, thereby keeping the disc spring group stable and further preventing swaying and overturning.

[0022] Further preferably, a second PTFE component is provided at a position where the first connecting plate contacts the second mirror-finished stainless steel sheet.

[0023] Further reduce friction.

[0024] Further preferably, the horizontal vibration isolation support and the vertical vibration isolation device are connected via a second connecting plate, and a limiting component is provided between the first connecting plate and the second connecting plate.

[0025] The limiting component is used to set the minimum distance between the first connecting plate and the second connecting plate, thereby limiting excessive deformation of the vertical vibration isolation device.

[0026] Further preferably, the limiting component includes a first decoupling plate connected to the first connecting plate and a second decoupling plate connected to the second connecting plate, and the contact surfaces of the first decoupling plate and the second decoupling plate have a third mirror stainless steel sheet and a third PTFE component.

[0027] The above arrangement can form a vertical sliding surface with a low friction coefficient, while preventing each other from moving horizontally, thereby improving the vibration isolation effect and effectively limiting the position.

[0028] The first decoupling plate is connected to the first connecting plate through a strip hole or the second decoupling plate is connected to the second connecting plate through a strip hole. The strip hole is convenient for offsetting processing and installation errors to ensure the verticality of the initial installation of the disc spring group.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] 1. The utility model adopts a vertical vibration isolation device, which uses a plurality of superimposed disc springs to provide sufficient bearing capacity. The high strength, low friction coefficient and stable chemical properties of mirror stainless steel are utilized to fully lubricate the contact surfaces between the disc springs, reducing friction between the disc springs, thereby reducing the dynamic stiffness of the disc spring group and improving the vibration isolation capability. In conjunction with the support tube, the device can effectively prevent the disc springs from shifting while reducing friction, avoiding the disc spring group from swaying or overturning, thereby improving the dynamic stiffness, further ensuring the vibration isolation capability and effectiveness, and extending the service life.

[0031] 2. The dual-control vibration bearing of the utility model can be used to isolate earthquakes in the horizontal direction and to isolate rail transit vibrations in the vertical direction, thereby achieving dual-effect vibration control. In addition, the vertical vibration isolation device has a high load-bearing capacity and low stiffness, making vertical vibration control more reliable and more efficient, and also eliminating the contradiction between the load-bearing capacity and vibration isolation effect of the vertical vibration isolation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic elevation view of a vertical vibration isolation device according to Example 1;

[0033] Figure 2 is an exploded schematic diagram of a vertical vibration isolation device of Example 1;

[0034] Figure 3 is a schematic elevation view of a vertical vibration isolation device according to Example 2;

[0035] Figure 4 yes Figure 3 A cross-sectional schematic diagram;

[0036] Figure 5 This is a schematic diagram of the three-dimensional structure of a vibration-vibration dual-control support in Example 3;

[0037] Figure 6 yes Figure 5 It is a schematic elevation diagram;

[0038] Figure 7 yes Figure 6 A cross-sectional schematic diagram;

[0039] Figure 8 yes Figure 5 A top cross-sectional schematic diagram of ;

[0040] Figure 9 This is a schematic structural diagram of the first connecting plate in Example 3.

[0041] Figure markings: 1-disc spring; 21-first mirror stainless steel sheet; 22-second mirror stainless steel sheet; 23-third mirror stainless steel sheet; 31-first PTFE component; 32-second PTFE component; 33-third PTFE component; 41-cylinder; 42-mounting seat; 43-extension cylinder; 51-inner loading ring; 52-outer loading ring; 61-horizontal seismic isolation support; 62-vertical vibration isolation device; 71-first connecting plate; 72-second connecting plate, 81-first decoupling plate; 82-second decoupling plate. DETAILED DESCRIPTION

[0042] The present invention will be described in detail below with reference to the accompanying drawings.

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with experimental examples and specific implementation methods. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0044] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the product / device / apparatus of the present invention is placed when it is conventionally used. These terms of orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians, and do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, they should not be understood as limitations on the present invention.

[0045] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present utility model.

[0046] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0047] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0048] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0049] Example 1

[0050] The utility model adopts a vertical vibration isolation device, such as Figure 1-2 Shown, including:

[0051] The disc spring assembly includes a plurality of disc springs 1 arranged in a stacked manner, with a first mirror-finished stainless steel sheet 21 provided between two adjacent disc springs 1;

[0052] The support tube, the disc spring assembly is sleeved on the outside of the support tube, and the cross section of the support tube can be provided with a second mirror stainless steel sheet 22 for sliding contact with the corresponding contact surface.

[0053] The size and quantity of the disc springs 1 and the number of disc spring groups are set according to actual needs to obtain the required load-bearing capacity, deformation capacity and stiffness.

[0054] The cylinder structure of the support cylinder can be an integral cylinder or a split structure assembled in segments.

[0055] The first mirror stainless steel sheet 21 can be installed by, for example, gluing.

[0056] One first mirror-finished stainless steel sheet 21 or two first mirror-finished stainless steel sheets 21 may be provided between two adjacent disc springs 1 .

[0057] For example, Figure 2As shown, it includes 4 disc spring groups connected in series, each disc spring group includes 3 disc springs 1 connected in parallel, two first mirror stainless steel sheets 21 are provided between adjacent two disc springs 1, and a first PTFE component 31 is provided between the corresponding two first mirror stainless steel sheets 21. The first PTFE component 31 can adopt PTFE membrane to facilitate better contact. An inner loading ring 51 and an outer loading ring 52 are respectively provided on both sides of the disc spring group, and the support cylinder includes a detachably connected cylinder body 41 and a mounting seat 42. The end of the cylinder body 41 is connected to the inner wall of the mounting seat 42 to facilitate the compression of the disc spring group during initial installation, so that the various parts are closely attached. A second mirror stainless steel sheet 22 is provided on the bottom surface of the mounting seat 42.

[0058] The height and tip diameter of the loading ring are designed according to the deformation capacity and inner and outer diameter dimensions of the disc spring assembly.

[0059] In some embodiments, the first mirror-finished stainless steel sheet 21 includes a plurality of sector-shaped sheets. The number of the sector-shaped sheets is determined according to the size of the disc spring 1. When arranging the sector-shaped sheets, the gaps between the sector-shaped sheets are minimized as much as possible.

[0060] In some embodiments, a mounting plate is provided on one end surface of the cylindrical body 41 and the mounting seat 42 for connecting to a corresponding structure.

[0061] In some embodiments, the support tube can be made of carbon steel, such as Q235 or Q345, or alloy steel, stainless steel, or corrosion-resistant steel. The disc spring 1 can be made of alloy steel, such as 60Si2MnA and 50CrVA, or a new material, such as shape memory alloy (SMA).

[0062] A vertical vibration isolation device described in the present invention is adopted, and several overlapping disc springs 1 are used to provide sufficient bearing capacity. The high strength, low friction coefficient and stable chemical properties of mirror stainless steel are utilized to fully lubricate the contact surfaces between the disc springs 1, thereby reducing the friction between the disc springs 1, thereby reducing the dynamic stiffness of the disc spring group and improving the vibration isolation capability. In conjunction with the support tube, while reducing friction, it can effectively prevent the disc springs 1 from shifting, avoid the disc spring group from swaying or overturning, thereby improving the dynamic stiffness, further ensuring the vibration isolation capability and effectiveness, and extending the service life.

[0063] Example 2

[0064] The structure of the vertical vibration isolation device used in the present invention is roughly the same as that of the embodiment 1, except that the support cylinder includes a cylinder body 41, an extension cylinder 43 and a mounting seat 42. Figure 3-4 shown.

[0065] Exemplarily, six disc spring assemblies as in Example 1 are connected in series, and the extension tube 43 is threadedly connected to the cylinder body 41. After connection, the outer diameters are consistent to ensure that the gap at the connection does not affect the vertical sliding of the disc spring assembly. The other end of the extension tube 43 is connected to the inner wall of the mounting seat 42.

[0066] Example 3

[0067] The utility model adopts a vibration dual-control support, including a horizontal vibration isolation support 61 and a vertical vibration isolation device 62 as in Example 1 or Example 2. Figure 5-9 shown.

[0068] In some embodiments, the horizontal isolation bearing 61 can be a friction pendulum bearing, a thick laminated rubber bearing, a lead rubber bearing, etc. The combination of the horizontal isolation bearing 61 and the vertical vibration isolation device 62 can be designed according to actual conditions and the structure and type of the horizontal isolation bearing 61.

[0069] Exemplarily, the horizontal seismic isolation bearing 61 is a laminated rubber bearing, and a lead core can be added to improve the energy absorption capacity. The horizontal seismic isolation bearing 61 is stacked with the vertical vibration isolation device 62. A second connecting plate 72 is provided between the horizontal seismic isolation bearing 61 and the vertical vibration isolation device 62. The horizontal seismic isolation bearing 61 and the cylinder 41 are both bolted to the second connecting plate 72. One end of the support cylinder is connected to the horizontal seismic isolation bearing 61, and the other end is slidably connected to the first connecting plate 71. A second mirror stainless steel sheet 22 is provided between the first connecting plate 71 and the corresponding end surface of the support cylinder.

[0070] There are four vertical seismic isolation devices 62 arranged in a square array. The number and layout of the vertical seismic isolation devices 62 are determined according to the bearing capacity requirements, device size, etc.

[0071] In some embodiments, a limiting component is provided between the first connecting plate 71 and the second connecting plate 72 to limit the maximum deformation of the vertical vibration isolation device 62. The number and form of the limiting components are set as needed.

[0072] For example, there are four limiting components, which are respectively arranged around the support, such as Figure 8 As shown, the bottom surface of the second connecting plate 72 is connected to the second decoupling plate 82, and the top surface of the first connecting plate 71 is connected to the first decoupling plate 81. The first decoupling plate 81 and the second decoupling plate 82 can be made of components such as channel steel and angle steel, and can be connected to the corresponding connecting plates by welding, bolting, etc. The cantilever end surface of the first decoupling plate 81 corresponds to the second connecting plate 72, and / or the cantilever end surface of the second decoupling plate 82 corresponds to the first connecting plate 71. As the vertical vibration isolation device 62 deforms, the bottom surface of the first decoupling plate 81 and the second connecting plate 72 or the second decoupling plate 82 and the first connecting plate 71 will collide, thereby effectively protecting the disc spring assembly.

[0073] The first decoupling plate 81 is connected to the first connecting plate 71 through a strip hole, or the second decoupling plate 82 is connected to the second connecting plate 72 through a strip hole. The strip hole is convenient for offsetting processing and installation errors to ensure the verticality of the initial installation of the disc spring assembly.

[0074] In some embodiments, the position where the first connecting plate 71 contacts the second mirror stainless steel sheet 22 has a second PTFE member 32. The second PTFE member 32 can be a peritoneum or a structural layer provided at the corresponding position of the first connecting plate 71, or can be provided as a replaceable PTFE plate, such as Figure 9 shown.

[0075] The plastic deformation and energy dissipation of the laminated rubber bearings are utilized for horizontal seismic isolation, while the high load-bearing capacity and low stiffness of the disc spring assembly are utilized for vertical vibration isolation. This system can be used to isolate both earthquakes horizontally and rail transit vibrations vertically, achieving dual-effect vibration control. The high load-bearing capacity and low stiffness of the vertical vibration isolation device make vertical vibration control more reliable and efficient, while also eliminating the conflict between the load-bearing capacity and isolation effectiveness of the vertical vibration isolation system.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical vibration isolation device, characterized in that: include: A disc spring assembly comprises a plurality of disc springs (1) arranged in a stacked manner, wherein a first mirror-finished stainless steel sheet (21) is provided between two adjacent disc springs (1); The support tube is provided with the disc spring assembly sleeved on the outside of the support tube.

2. A vertical vibration isolation device according to claim 1, characterized in that: Two first mirror-finished stainless steel sheets (21) are provided between two adjacent disc springs (1), and a first PTFE component (31) is provided between the corresponding two first mirror-finished stainless steel sheets (21).

3. A vertical vibration isolation device according to claim 2, characterized in that: The first mirror stainless steel sheet (21) comprises a plurality of sector-shaped sheets.

4. A vertical vibration isolation device according to any one of claims 1 to 3, characterized in that: There are a plurality of disc spring groups, and two adjacent disc spring groups are arranged in a matched manner. An inner loading ring (51) and an outer loading ring (52) are respectively provided on both sides of the disc spring group.

5. A vertical vibration isolation device according to claim 4, characterized in that: The support tube comprises a detachably connected tube body (41) and a mounting seat (42); or, the support tube comprises a tube body (41), an extension tube (43) and a mounting seat (42), and both ends of the extension tube (43) are detachably connected to the tube body (41) and the mounting seat (42).

6. A vibration dual-control support, characterized in that: It comprises a horizontal vibration isolation support (61) and a vertical vibration isolation device (62) as described in any one of claims 1 to 5.

7. The vibration dual-control support according to claim 6, characterized in that: The horizontal vibration isolation support (61) is a laminated rubber support, and the horizontal vibration isolation support (61) is stacked with the vertical vibration isolation device. One end of the support tube of the vertical vibration isolation device (62) is connected to the horizontal vibration isolation support (61), and the other end is slidably connected to the first connecting plate (71). A second mirror stainless steel sheet (22) is provided between the first connecting plate (71) and the corresponding end surface of the support tube.

8. The vibration dual-control support according to claim 7, characterized in that: A second PTFE component (32) is provided at a position where the first connecting plate (71) contacts the second mirror-finished stainless steel sheet (22).

9. The vibration dual-control support according to any one of claims 7-8, characterized in that: The horizontal vibration isolation support (61) and the vertical vibration isolation device (62) are connected via a second connecting plate (72), and a limiting component is provided between the first connecting plate (71) and the second connecting plate (72).

10. The vibration dual-control support according to claim 9, characterized in that: The limiting component comprises a first decoupling plate (81) connected to the first connecting plate (71) and a second decoupling plate (82) connected to the second connecting plate (72); the contact surfaces of the first decoupling plate (81) and the second decoupling plate (82) have a third mirror stainless steel sheet (23) and a third PTFE component (33).

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