Vertical vibration isolation device and vibration double-control support

Abstract

The invention relates to the technical field of vibration control, and provides a vertical vibration isolation device and a vibration-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

[0002] The invention relates to the field of vibration control technology, in particular to a vertical vibration isolation device and a vibration dual-control support. Background Art

[0003] In recent years, in order to adapt to the rapid urbanization process and save land resources, a large number of track cover structures have been built in major cities in China. Track cover structures usually have problems with vertical structural conversion, which brings adverse effects on seismic resistance. At the same time, the vibration caused by subway operation causes significant trouble to the work and living areas of residents in the cover buildings. Therefore, the development of a three-dimensional vibration dual-control bearing that isolates vertical subway vibration has high economic value and social significance.

[0004] 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, the thick laminated rubber bearing and friction pendulum combination, the air spring and lead rubber bearing combination, etc. have been proposed. However, the existing disc spring group has the problem of insufficient vertical bearing capacity and the structure is easy to overturn and sway. Summary of the invention

[0005] The purpose of the present invention 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 easy to overturn and sway, and to provide a vertical vibration isolation device and a vibration dual-control support.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: In a first aspect, the present invention provides a vertical vibration isolation device, comprising: The disc spring assembly comprises a plurality of disc springs arranged in a stacked manner, wherein a first mirror-finished stainless steel sheet is provided between two adjacent disc springs; The support tube is provided with the disc spring assembly sleeved on the outside of the support tube.

[0007] A vertical vibration isolation device described in the present invention adopts a plurality of 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 to 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, the disc springs can be effectively prevented from being displaced while reducing friction, and the disc spring group can be prevented from swaying or overturning, thereby improving the dynamic stiffness, further ensuring the vibration isolation capability and effectiveness, and extending the service life.

[0008] Preferably, two of the first mirror-finished stainless steel sheets are provided between two adjacent disc springs, and a first PTFE component is provided between two corresponding first mirror-finished stainless steel sheets.

[0009] The provision of PTFE (polytetrafluoroethylene) components further reduces the dynamic stiffness of the disc spring group, thereby improving the vibration isolation capability.

[0010] Further preferably, the first mirror-finished stainless steel sheet comprises a plurality of sector-shaped sheets.

[0011] The above-mentioned setting method is conducive to being as close to the surface of the disc spring as possible, 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.

[0012] Preferably, there are a plurality of disc spring groups, and two adjacent disc spring groups are arranged in a matched manner, and an inner loading ring and an outer loading ring are respectively provided on both sides of the disc spring group.

[0013] By adopting the above-mentioned setting method, a 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.

[0014] Further preferably, the support tube includes a detachably connected tube body and a mounting seat; or, the support tube includes a tube body, an extension tube and a mounting seat, and both ends of the extension tube are detachably connected to the tube body and the mounting seat respectively.

[0015] It is convenient to install, repair and replace the disc spring, the first mirror stainless steel sheet, the first PTFE component, the inner loading ring and the outer loading ring. The extension tube is provided to facilitate the addition of more disc spring groups and the number of disc springs in the disc spring group as needed.

[0016] In a second aspect, the present invention further provides a dual-control vibration bearing, comprising a horizontal vibration isolation bearing and a vertical vibration isolation device as described above.

[0017] The dual-control vibration-vibration support described in the present invention can be used to isolate earthquakes in the horizontal direction and to isolate rail transit vibrations in the vertical direction, thereby realizing dual-effect control of vibration and vibration. The vertical vibration isolation device has high bearing capacity and low stiffness, making vertical vibration control more reliable and more efficient, and can also get rid of the contradiction between the bearing capacity and vibration isolation effect of the vertical vibration isolation system.

[0018] Preferably, the horizontal seismic isolation bearing is a laminated rubber bearing, which is stacked with a vertical vibration isolation device, one end of a support tube of the vertical vibration isolation device is connected to the horizontal seismic isolation bearing, and the other end is slidably connected to a first connecting plate, and a second mirror stainless steel sheet is provided between the first connecting plate and corresponding end surfaces of the support tube.

[0019] 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 is slidingly connected to the first connecting plate as a whole, and a second mirror stainless steel sheet is arranged on the contact surface to release the slight horizontal deformation caused by the laminated rubber bearing, so that the disc spring group remains stable and further prevents swaying and overturning.

[0020] Further preferably, a second PTFE component is provided at a position where the first connecting plate contacts the second mirror-finished stainless steel sheet.

[0021] Further reduce friction.

[0022] Further preferably, the horizontal seismic isolation support is connected to the vertical vibration isolation device via a second connecting plate, and a limiting component is provided between the first connecting plate and the second connecting plate.

[0023] The limiting component is used for the minimum distance between the first connecting plate and the second connecting plate, so as to limit excessive deformation of the vertical vibration isolation device.

[0024] 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.

[0025] The above arrangement can form a vertical sliding surface with a low friction coefficient, prevent each other from moving horizontally, improve the vibration isolation effect, and effectively limit the position.

[0026] 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 assembly.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. A vertical vibration isolation device of the present invention adopts a plurality of 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 to reduce the friction between the disc springs, thereby reducing the dynamic stiffness of the disc spring group and improving the vibration isolation capability. In combination with the support tube, the disc springs can be effectively prevented from being displaced while reducing the friction, and the disc spring group can be prevented from swaying or overturning, thereby improving the dynamic stiffness, further ensuring the vibration isolation capability and effectiveness, and extending the service life.

[0028] 2. The dual-control vibration-vibration support of the present invention can be used to isolate earthquakes in the horizontal direction and to isolate rail transit vibrations in the vertical direction, thereby realizing dual-effect control of vibration and vibration. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic elevation view of a vertical vibration isolation device of Example 1; Figure 2 is an exploded schematic diagram of a vertical vibration isolation device of Example 1; Figure 3 is a schematic elevation view of a vertical vibration isolation device of Example 2; Figure 4 yes Figure 3 A cross-sectional schematic diagram of Figure 5 is a schematic diagram of the three-dimensional structure of a vibration dual-control support in Example 3; Figure 6 yes Figure 5 It is a schematic elevation diagram; Figure 7 yes Figure 6 A cross-sectional schematic diagram of Figure 8 yes Figure 5 A top cross-sectional schematic diagram of Fig. 9 It is a schematic structural diagram of the first connecting plate in Example 3.

[0030] 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

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] In order to make the purpose, technical scheme and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above-mentioned subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0033] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0034] 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 than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., 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 scheme of the present invention.

[0035] In addition, the expressions “first”, “second”, “third”, etc., which appear 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.

[0036] In addition, in the description of the embodiments of the present invention, "several", "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.

[0037] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0038] Example 1 A vertical vibration isolation device used in the present invention is as follows: Figure 1-2 As shown, including: The disc spring assembly comprises a plurality of disc springs 1 arranged in a stacked manner, and a first mirror-finished stainless steel sheet 21 is provided between two adjacent disc springs 1; 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.

[0039] The size and quantity of the disc spring 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.

[0040] The cylinder structure of the support cylinder can be an integral cylinder or a split structure assembled in segments.

[0041] The first mirror stainless steel sheet 21 can be provided by, for example, gluing.

[0042] One first mirror-finished stainless steel sheet 21 or two first mirror-finished stainless steel sheets 21 may be disposed between two adjacent disc springs 1 .

[0043] For example, Figure 2 As 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 arranged between two adjacent disc springs 1, and a first PTFE component 31 is arranged between the two corresponding 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 arranged 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, and a second mirror stainless steel sheet 22 is arranged on the bottom surface of the mounting seat 42.

[0044] 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.

[0045] In some embodiments, the first mirror stainless steel sheet 21 includes a plurality of sector-shaped sheets, the number of which is determined according to the size of the disc spring 1 , and when arranged, the gaps between the sector-shaped sheets are minimized as much as possible.

[0046] In some embodiments, a mounting plate is provided on one end surface of the cylinder 41 and the mounting seat 42 for connecting to a corresponding structure.

[0047] In some embodiments, the support tube can be made of carbon steel, such as Q235, Q345, etc., or alloy steel, stainless steel, corrosion-resistant steel, etc. The disc spring 1 can be made of alloy steel, such as 60Si 2 MnA and 50CrVA, etc., or new materials such as shape memory alloy (SMA), etc.

[0048] A vertical vibration isolation device described in the present invention is adopted, and a plurality of 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 to reduce 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, the disc springs 1 can be effectively prevented from being displaced while reducing friction, and the disc spring group can be prevented from swaying or overturning, thereby improving the dynamic stiffness, further ensuring the vibration isolation capability and effectiveness, and extending the service life.

[0049] Example 2 The vertical vibration isolation device used in the present invention has a structure similar to that of the first embodiment, except that the support cylinder includes a cylinder body 41, an extension cylinder 43 and a mounting seat 42. Figure 3-4 shown.

[0050] 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.

[0051] Example 3 The present invention 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, such as Figure 5-9 shown.

[0052] In some embodiments, the horizontal seismic isolation bearing 61 can be a friction pendulum bearing, a thick laminated rubber bearing, a lead rubber bearing, etc. The combination of the horizontal seismic 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 seismic isolation bearing 61.

[0053] Exemplarily, the horizontal seismic isolation bearing 61 is a laminated rubber bearing, and a lead core may 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.

[0054] 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.

[0055] 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 required.

[0056] Exemplarily, there are four limiting components, which are respectively arranged around the support, such as Figure 8 As shown, the second connecting plate 72 is connected to the second decoupling plate 82 on the bottom surface, and the first connecting plate 71 is connected to the first decoupling plate 81 on the top surface. 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. With the deformation of the vertical vibration isolation device 62, 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 group.

[0057] 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.

[0058] 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, and the second PTFE member 32 can be a peritoneum or a structural layer set at the corresponding position of the first connecting plate 71, or can be set as a replaceable PTFE plate, such as Fig. 9 shown.

[0059] The plastic deformation and energy dissipation capacity of the laminated rubber bearings are used for horizontal seismic isolation, and the high bearing capacity and low stiffness of the disc spring group are used for vertical vibration isolation. It can be used to isolate earthquakes horizontally and to isolate rail transit vibration vertically, thereby achieving dual-effect control of vibration. The vertical vibration isolation device has high bearing capacity and low stiffness, making vertical vibration control more reliable and efficient, and also getting rid of the contradiction between the bearing capacity and vibration isolation effect of the vertical vibration isolation system.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope 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 of the first mirror-finished stainless steel sheets (21) are arranged between two adjacent disc springs (1), and a first PTFE component (31) is arranged between two corresponding first mirror-finished stainless steel sheets (21).

3. A vertical vibration isolation device according to claim 2, characterized in that: The first mirror-finished 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 two ends of the extension tube (43) are detachably connected to the tube body (41) and the mounting seat (42), respectively.

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 claimed in any one of claims 1 to 5.

7. The vibration dual-control support according to claim 6, characterized in that: The horizontal seismic isolation support (61) is a laminated rubber support, and the horizontal seismic 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 seismic 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), and 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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