Novel three-dimensional vibration isolation support

Abstract

The utility model provides a novel three-dimensional vibration isolation support. The novel three-dimensional vibration isolation support comprises an upper connecting plate; a middle connecting plate; a lower connecting plate; the two ends of the first vertical vibration isolation system are connected with the upper connecting plate and the middle connecting plate correspondingly; the multiple viscous dampers are circularly arranged at equal intervals with the first vertical vibration isolation system as the circle center, and the viscous dampers are installed between the upper connecting plate and the middle connecting plate; the two ends of the second vertical vibration isolation system are connected with the middle connecting plate and the lower connecting plate correspondingly. The utility model is used for reducing the vibration problem of the main body structure caused by the take-off and landing of the roof aircraft, improving the vibration comfort of the structure and ensuring the earthquake safety of the roof parking apron.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration isolation, and in particular relates to a novel three-dimensional vibration isolation support. Background Art

[0002] Electric vertical take-off and landing (eVTOL) vehicles, with their unique efficiency advantages, are leading a new revolution in aviation. As the core force of future urban air mobility, eVTOLs not only represent the deep integration of new concepts, new energy sources, new materials, and new technologies, but also herald a fundamental shift in air travel. Driven by the global low-altitude economy, the research and development and innovation of eVTOLs and their supporting infrastructure have become a new frontier of international competition.

[0003] As a critical support for eVTOL operations, the construction quality of rooftop helipads is directly related to the healthy development of the low-altitude economy. However, the current domestic construction of rooftop helipads generally uses traditional cast-in-place concrete structures. This model is not only inefficient and environmentally burdensome, but also difficult to adapt to the flexible and changing needs of the future. More seriously, the vibration problems caused by helicopter takeoff and landing and the vibration of the helipad caused by earthquakes directly threaten the comfort of people inside the building and the safety of equipment due to the lack of effective vibration isolation measures. Utility Model Content

[0004] The purpose of the utility model is to provide a new three-dimensional vibration isolation bearing that can be applied to a rooftop helipad to reduce the vibration problem of the main structure caused by the take-off and landing of rooftop aircraft, improve the vibration comfort of the structure and ensure the earthquake safety of the rooftop helipad.

[0005] The utility model is realized through the following technical solutions:

[0006] A new three-dimensional vibration isolation support, comprising:

[0007] Upper connecting plate;

[0008] Middle connecting plate;

[0009] Lower connecting plate;

[0010] a first vertical vibration isolation system, wherein two ends of the first vertical vibration isolation system are respectively connected to the upper connecting plate and the middle connecting plate;

[0011] A plurality of viscous dampers are arranged in a circle with equal spacing around the first vertical vibration isolation system, and the viscous dampers are installed between the upper connecting plate and the middle connecting plate;

[0012] The second vertical vibration isolation system has two ends connected to the middle connecting plate and the lower connecting plate respectively.

[0013] Furthermore, the first vertical vibration isolation system includes a plurality of coil springs, and the plurality of coil springs are arranged at intervals between the upper connecting plate and the middle connecting plate.

[0014] Furthermore, the plurality of coil springs are divided into a first coil spring and a plurality of second coil springs, and the plurality of second coil springs are arranged in a circle with equal intervals around the first coil spring as the center.

[0015] Furthermore, the number of the second coil springs and the number of the viscous dampers are both set to four.

[0016] Furthermore, a plurality of first grooves for respectively placing a plurality of coil springs are provided at the bottom of the upper connecting plate, and a plurality of second grooves for respectively placing a plurality of coil springs are provided at the top of the middle connecting plate.

[0017] Furthermore, the top end of the viscous damper is detachably connected to an upper fixing plate fixed to the bottom of the upper connecting plate, and the bottom end of the viscous damper is detachably connected to a lower fixing plate fixed to the top of the middle connecting plate.

[0018] Furthermore, the viscous damper is arranged at an angle.

[0019] Furthermore, the second vertical vibration isolation system includes a rubber pad, and the top of the rubber pad is detachably connected to the middle connecting plate.

[0020] Furthermore, mounting holes are provided at the four corners of the upper connecting plate and the lower connecting plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) The first vertical vibration isolation system has the functions of bearing and damping vibrations, can effectively provide vertical bearing capacity and reduce the vertical stiffness of the apron structure, can effectively adjust the vertical modal frequency of the structure, increase the vertical damping of the structure, and play a good vibration reduction effect. The damping energy dissipation effect of the viscous damper can also absorb the horizontal and vertical impact vibration energy, further reduce the vibration response of the roof apron, suppress the vertical resonance of the roof apron, and play a good motion buffering and vibration reduction role; the second vertical vibration isolation system provides good horizontal earthquake isolation performance, and at the same time can increase the viscoelastic damping effect of the support in the vertical and horizontal directions, which also plays a vibration reduction role;

[0023] (2) The upper connecting plate and the lower connecting plate are used to connect to the main structure and the apron respectively, to achieve rapid assembly construction;

[0024] (3) The utility model can be applied to rooftop helipads to reduce the vibration problem of the main structure caused by the take-off and landing of rooftop aircraft, improve the vibration comfort of the structure and ensure the earthquake safety of the rooftop helipad. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional schematic diagram of the novel three-dimensional vibration isolation support of the utility model;

[0026] Figure 2 This is a bottom view of the novel three-dimensional vibration isolation support of the utility model;

[0027] Figure 3 This is a top view of the new three-dimensional vibration isolation support of the utility model.

[0028] In the figure, 1-upper connecting plate, 2-middle connecting plate, 3-lower connecting plate, 4-viscous damper, 5-coil spring, 6-first groove, 7-second groove, 8-upper fixing plate, 9-lower fixing plate, 10-rubber pad, 11-mounting hole. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this utility model, the terms "first", "second", etc. are used only to distinguish the description and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0034] See also Figure 1 、 Figure 2 and Figure 3 , Figure 1 This is a cross-sectional diagram of the new three-dimensional vibration isolation support of the utility model. Figure 2 This is the bottom view of the new three-dimensional vibration isolation support of the utility model. Figure 3 This is a top view of a novel three-dimensional vibration isolation support of the utility model. A novel three-dimensional vibration isolation support comprises an upper connecting plate 1, a middle connecting plate 2, a lower connecting plate 3, a first vertical vibration isolation system, a second vertical vibration isolation system, and a plurality of viscous dampers 4. The middle connecting plate 2 is spaced apart below the upper connecting plate 1, and the lower connecting plate 3 is spaced apart below the middle connecting plate 2. The two ends of the first vertical vibration isolation system are respectively connected to the upper connecting plate 1 and the middle connecting plate 2. The plurality of viscous dampers 4 are arranged in a circular pattern with equal spacing around the first vertical vibration isolation system, and the viscous dampers 4 are installed between the upper connecting plate 1 and the middle connecting plate 2. The two ends of the second vertical vibration isolation system are respectively connected to the middle connecting plate 2 and the lower connecting plate 3.

[0035] The upper connecting plate 1 and lower connecting plate 3 are used to connect to the main structure and the apron, respectively, allowing the support to be installed between the main structure and the apron. To facilitate installation, in one embodiment, mounting holes 1111 are provided at the four corners of the upper connecting plate 1 and the lower connecting plate 3. These mounting holes 1111 allow the upper connecting plate 1 and the lower connecting plate 3 to be bolted to the main structure and the apron, respectively, enabling rapid assembly and construction, improving construction efficiency.

[0036] When subjected to impact vibrations from aircraft taking off and landing on the rooftop helipad, the vibrations are transmitted to this support through the helipad. The vibrations are then reduced through the combined action of the first vertical vibration isolation system, multiple viscous dampers 4, and the second vertical vibration isolation system, ensuring the vibration comfort of the main structure. This effectively reduces the vibration problems of the main structure caused by aircraft taking off and landing on the rooftop helipad and improves the vibration comfort of the structure. When subjected to earthquakes, under the action of horizontal earthquakes, the second vertical vibration isolation system of this support exerts its horizontal seismic isolation performance, reducing the horizontal seismic effects of the helipad through horizontal displacement. Under the action of vertical earthquakes, the first vertical vibration system of this support can produce vertical deformation, combined with the viscous dampers 4 to reduce the vertical vibration energy of the structure, ensuring the earthquake safety of the rooftop helipad.

[0037] Specifically, the first vertical vibration isolation system performs both load-bearing and vibration-damping functions, effectively providing vertical load-bearing capacity and reducing the vertical stiffness of the helipad structure. It can effectively adjust the structure's vertical modal frequency, increase the structure's vertical damping, and achieve excellent vibration reduction. The viscous damper 4's energy-dissipating damping function also absorbs horizontal and vertical impact vibration energy, further reducing the rooftop helipad's vibration response and suppressing its vertical resonance, thus providing excellent motion buffering and vibration reduction. In one embodiment, the first vertical vibration isolation system includes multiple coil springs 5, which are spaced apart between the upper connecting plate 1 and the middle connecting plate 2. These multiple coil springs 5 ​​can significantly reduce the overall vertical stiffness of the bearing. In one embodiment, the multiple coil springs 5 ​​are divided into a first coil spring 5 and a plurality of second coil springs 5, which are arranged in a circular pattern with equal spacing around the first coil spring 5. The first coil spring 5 is positioned between the center of the upper connecting plate 1 and the center of the middle connecting plate 2.

[0038] In one embodiment, the number of the second coil springs 5 ​​and the number of the viscous dampers 4 are both four. The four viscous dampers 4 are respectively arranged on one side of the four second bolt springs.

[0039] In one embodiment, the bottom of the upper connecting plate 1 is provided with a plurality of first grooves 6 for accommodating the plurality of coil springs 5, and the top of the middle connecting plate 2 is provided with a plurality of second grooves 7 for accommodating the plurality of coil springs 5. The plurality of first grooves 6 and the plurality of second grooves 7 constrain the top and bottom ends of the plurality of bolt springs, ensuring accurate placement of the plurality of coil springs 5 ​​and preventing lateral shifting.

[0040] To facilitate installation of the viscous damper 4, in one embodiment, the top of the viscous damper 4 is detachably connected to an upper fixing plate 8, which is fixed to the bottom of the upper connecting plate 1. The bottom of the viscous damper 4 is detachably connected to a lower fixing plate 9, which is fixed to the top of the middle connecting plate 2. The upper fixing plate 8 can be pre-installed on the bottom of the upper connecting plate 1, and the lower fixing plate 9 can be pre-installed on the top of the middle connecting plate 2. The viscous damper 4 is connected to the upper and lower fixing plates 8 and 9 via bolts, facilitating installation and removal of the viscous damper 4. In one embodiment, the viscous damper 4 is tilted, sloping toward the outside of the support from its top to its bottom.

[0041] In one embodiment, the second vertical vibration isolation system includes a rubber pad 10, and the top of the rubber pad 10 is detachably connected to the middle connecting plate 2. The second vertical vibration isolation system adopts traditional rubber vibration isolation, which provides good horizontal earthquake isolation performance. At the same time, it can also increase the viscoelastic damping effect of the support in the vertical and horizontal directions, and also play a vibration reduction role. The top of the rubber pad 10 and the middle connecting plate 2 can be connected by bolts, which facilitates the installation and removal of the rubber pad 10 and the middle connecting plate 2. In one embodiment, the rubber pad 10 adopts a thick rubber pad 10. Thick refers to that the thickness of the rubber pad 10 is larger, it has good pressure bearing capacity and buffering capacity, and can withstand greater loads and impacts.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A new three-dimensional vibration isolation support, characterized in that: include: Upper connecting plate; Middle connecting plate; Lower connecting plate; a first vertical vibration isolation system, wherein two ends of the first vertical vibration isolation system are respectively connected to the upper connecting plate and the middle connecting plate; a plurality of viscous dampers, the plurality of viscous dampers being arranged in a circle with equal spacing around the first vertical vibration isolation system, and the viscous dampers being installed between the upper connecting plate and the middle connecting plate; The second vertical vibration isolation system has two ends connected to the middle connecting plate and the lower connecting plate respectively.

2. The novel three-dimensional vibration isolation support according to claim 1 is characterized in that: The first vertical vibration isolation system includes a plurality of coil springs, and the plurality of coil springs are spaced apart and arranged between the upper connecting plate and the middle connecting plate.

3. The novel three-dimensional vibration isolation support according to claim 2 is characterized in that: The plurality of coil springs are divided into a first coil spring and a plurality of second coil springs, and the plurality of second coil springs are arranged in a circle with equal intervals around the first coil spring as the center.

4. The novel three-dimensional vibration isolation support according to claim 3 is characterized in that: The number of the second coil springs and the number of the viscous dampers are both set to four.

5. The novel three-dimensional vibration isolation support according to claim 2 is characterized in that: The bottom of the upper connecting plate is provided with a plurality of first grooves for respectively placing a plurality of coil springs, and the top of the middle connecting plate is provided with a plurality of second grooves for respectively placing a plurality of coil springs.

6. The novel three-dimensional vibration isolation support according to claim 1 is characterized in that: The top end of the viscous damper is detachably connected to an upper fixing plate, which is fixed to the bottom of the upper connecting plate. The bottom end of the viscous damper is detachably connected to a lower fixing plate, which is fixed to the top of the middle connecting plate.

7. The novel three-dimensional vibration isolation support according to claim 1 is characterized in that: The viscous damper is arranged at an angle.

8. The novel three-dimensional vibration isolation support according to claim 1 is characterized in that: The second vertical vibration isolation system includes a rubber pad, and the top of the rubber pad is detachably connected to the middle connecting plate.

9. The novel three-dimensional vibration isolation support according to claim 1 is characterized in that: The four corners of the upper connecting plate and the lower connecting plate are provided with mounting holes.

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