A full-metal vibration isolation and buffering device for spaceborne equipment protection

Abstract

This invention provides an all-metal vibration isolation and buffer device for the protection of spaceborne equipment. It includes a support base, a central disk at the center of the support base, a buffer pad sandwiched between the central disk and the support base, and several vibration isolation structures evenly distributed around the outer circumference of the central disk. These vibration isolation structures are telescopically connected to the central disk. Due to its excellent high and low temperature resistance, fatigue resistance, and omnidirectional vibration isolation and buffering performance, this invention can provide efficient and stable vibration isolation and buffering effects in extreme environments. Its all-metal, multi-directional vibration isolation and buffering structure allows it to replace traditional rubber vibration isolators and can be applied in spaceborne, aerospace, precision instrument, shipboard equipment, and high-speed transportation fields to reduce the impact of vibration on critical equipment, improve system stability and service life, and meet the application requirements of high reliability and long lifespan.

Description

Technical Field

[0001] This utility model relates to an all-metal vibration isolation and buffer device for the protection of spaceborne equipment. Background Technology

[0002] With the advancement of aerospace technology, spaceborne equipment will face harsher environments and vibration and impact loads, which can easily cause equipment damage. Therefore, it is necessary to use vibration isolation devices to protect the stability of the equipment. Existing traditional vibration isolation devices use rubber or other polymers. They have weak resistance to high temperatures and aging, and are prone to performance degradation in extreme environments. Faced with nonlinear vibration and impact loads from multiple directions and complex environments, their damping characteristics and mechanical properties are difficult to meet the needs of high-performance spaceborne equipment, which may lead to a decrease in vibration isolation and buffering effect, thereby affecting the normal operation of spaceborne equipment. The main problems and defects of existing traditional spaceborne vibration isolation devices are: (1) Spaceborne equipment will experience extreme temperature changes, vacuum environment and radiation in space. The rubber material in traditional vibration isolation devices is prone to hardening and loss of elasticity at extreme low temperatures, and may soften or age at high temperatures, resulting in a decrease in vibration isolation performance. In addition, rubber material is prone to creep or fatigue fracture under long-term vibration, resulting in a gradual decrease in vibration isolation and buffering performance, which cannot meet the long-term operation requirements of spaceborne equipment. (2) Traditional spaceborne vibration isolation devices are insufficient in terms of multi-directional vibration isolation capabilities. They are usually optimized only for vibration and impact in a specific direction, making it difficult to effectively suppress vibration and impact interference from multiple degrees of freedom in complex space environments. This limitation may affect the stability and reliability of spaceborne equipment. (3) Some spaceborne vibration isolation devices use metal rubber as vibration isolation elements. During installation, the metal rubber is connected to the equipment by means of compression, clamping, or bolt fixing, which generates friction during installation. At the same time, under vibration load, the metal rubber is prone to slippage with the contact surface. This combined effect of friction and slippage may lead to wear on the contact surface and metal wire structure, thereby weakening the vibration isolation performance and affecting the long-term reliability of the components. Utility Model Content

[0003] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide an all-metal vibration isolation buffer device for the protection of spaceborne equipment.

[0004] This utility model is achieved by the following scheme: an all-metal vibration isolation and buffer device for the protection of spaceborne equipment: including a bearing base, a central disk is provided on the center of the bearing base, a buffer pad is sandwiched between the central disk and the bearing base, and several vibration isolation structures are evenly distributed on the outer circumference of the central disk, and the vibration isolation structures are telescopically connected to the central disk.

[0005] Furthermore, the bearing base is provided with a circular groove, the central disk is located in the middle of the bottom of the circular groove, the outer periphery of the vibration isolation structure abuts against the wall of the circular groove, and the buffer pad is sandwiched between the central disk and the bottom of the circular groove.

[0006] Furthermore, the vibration isolation structure includes a vertically arranged connecting plate, a central connecting shaft passing through the connecting plate, both ends of the central connecting shaft extending out of the plate body on the same side, and a frustum-shaped metal rubber damping element installed on both ends of the central connecting shaft.

[0007] Furthermore, the frustum-shaped metal-rubber damping component is a rotating structure with an arc-shaped outer wall surface.

[0008] Furthermore, the large circular end of the frustum-shaped metal rubber damper is attached to the connecting plate, a large circular end cap is installed on the middle of the large circular end of the frustum-shaped metal rubber damper, and a small circular end cap is installed on the middle of the small circular end of the frustum-shaped metal rubber damper.

[0009] Furthermore, the end of the central connecting shaft passes through the large round end cap and the frustum-shaped metal rubber damping element on the same side and is screwed onto the small round end cap.

[0010] Furthermore, the connecting plate extends outward from the edge of the central disk into the area clamped by the large round ends of two frustoconical metal rubber damping elements. A fixing plate is connected to the extended edge. The connecting plate, except for the edge facing the central disk, is located within the area clamped by the large round ends of the two frustoconical metal rubber damping elements. A telescopic structure connects the fixing plate to the central disk.

[0011] Furthermore, the telescopic structure includes a telescopic sleeve, one end of which is closed and the other end has a screw hole. A screw rod is screwed onto the screw hole end of the telescopic sleeve, and the other end of the screw rod is rotatably connected to a fixed plate. A connecting rod is installed on the closed end of the telescopic sleeve and is fixed to the outer periphery of the central disc.

[0012] Furthermore, the upper surface of the buffer pad has a plurality of upper annular cavities with progressively increasing diameters arranged from the center outwards, and the lower surface of the buffer pad has a plurality of lower annular cavities with progressively increasing diameters arranged from the center outwards. The upper and lower annular cavities are arranged alternately, and the upper and lower annular cavities divide the buffer pad into a corrugated disc.

[0013] Furthermore, the cushioning pad is made of metal rubber.

[0014] Compared with the prior art, the present invention has the following advantages: by arranging the vibration isolation structure and the telescopic structure evenly along the circumference, effective vibration isolation in the horizontal direction is achieved, and the buffer pad provides excellent vibration isolation and buffering effects in the vertical direction. The combination of the two achieves all-round vibration isolation function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the vibration isolation structure according to an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the telescopic structure of an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the buffer pad structure according to an embodiment of the present invention;

[0019] Figure 5 for Figure 4 Schematic diagram of the AA section structure;

[0020] Figure 6 This is a schematic diagram of the internal unit structure of the metal wire mesh according to an embodiment of the present invention.

[0021] In the diagram: 1-Bearing base; 2-Central disc; 3-Buffer pad; 4-Vibration isolation structure; 5-Circular groove; 6-Connecting plate; 7-Central connecting shaft; 8-Frustoconical metal-rubber damping component; 9-Large round end cap; 10-Small round end cap; 11-Fixing plate; 12-Telescopic structure; 13-Telescopic sleeve; 14-Screw hole; 15-Screw rod; 16-Connecting rod; 17-Tightening bolt; 18-Upper annular cavity; 19-Lower annular cavity. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] like Figure 1-6 As shown, an all-metal vibration isolation and buffer device for the protection of spaceborne equipment includes a support base 1, a central disk 2 disposed at the center of the support base, a buffer pad 3 sandwiched between the central disk and the support base, and several vibration isolation structures 4 evenly distributed around the outer circumference of the central disk. The vibration isolation structures are telescopically connected to the central disk. In use, the end of the protected element is placed on the central disk. When subjected to vibration or impact loads, the vibration energy in the horizontal direction is evenly distributed from the central disk to the vibration isolation structure, which can absorb and alleviate the vibration energy transmitted to the structure. The buffer pad at the bottom absorbs and disperses the impact or vibration energy through compression, reducing the instantaneous stress peak and energy transmission, and reducing damage to the equipment or structure.

[0026] In this embodiment, the specific structure of the bearing base is as follows: a circular groove 5 is provided on the bearing base, the central disk is provided on the middle part of the bottom of the circular groove, the outer periphery of the vibration isolation structure abuts against the wall of the circular groove, and the buffer pad is sandwiched between the central disk and the bottom of the circular groove, that is, the central disk is attached to the buffer pad or fixed to the buffer pad by bolts.

[0027] In this embodiment, to achieve vibration isolation of the vibration isolation structure, the vibration isolation structure includes a vertically arranged connecting plate 6, through which a central connecting shaft 7 passes. Both ends of the central connecting shaft extend out of the plate on the same side. A frustum-shaped metal rubber damping element 8 is installed on both ends of the central connecting shaft. The frustum-shaped metal rubber damping element abuts against the wall of the circular groove and can roll up and down along the wall of the circular groove. The specific installation method of the frustum-shaped metal rubber damping element can be that the frustum-shaped metal rubber damping element is rotatably connected to the shaft of the central connecting shaft extending out of the connecting plate, so that when subjected to vibration or impact load, the vibration energy in the vertical direction causes the device to vibrate up and down. At this time, the frustum-shaped metal rubber damping element rolls, thereby effectively reducing surface friction and wear and improving service life.

[0028] In this embodiment, to facilitate the installation of the frustum-shaped metal rubber damper, the large circular end of the frustum-shaped metal rubber damper is attached to the connecting plate, and a large circular end cap 9 is installed on the middle of the large circular end of the frustum-shaped metal rubber damper. The large circular end cap is rotatably connected to the connecting plate, and a small circular end cap 10 is installed on the middle of the small circular end of the frustum-shaped metal rubber damper. That is, both the middle of the large circular end and the middle of the small circular end of the frustum-shaped metal rubber damper are provided with end cap mounting grooves, and the large circular end cap and the small circular end cap are set on the corresponding mounting grooves. The large circular end cap and the small circular end cap limit the axial movement of the central connecting shaft of the frustum-shaped metal rubber damper, which facilitates the installation of the frustum-shaped metal rubber damper.

[0029] In this embodiment, the frustum-shaped metal rubber damping component is a rotating structure with an arc-shaped outer wall, which allows it to fit tightly against the rigid bearing base. When the device is installed or moves up and down due to vibration, the structure can generate a certain degree of rolling, thereby effectively reducing surface friction and wear and improving service life.

[0030] In this embodiment, for the sake of reasonable design, the end of the central connecting shaft passes through the large round end cap and the frustum-shaped metal rubber damping element on the same side and is screwed onto the small round end cap. That is, the large round end cap and the frustum-shaped metal rubber damping element are rotatably connected to the central connecting shaft, and the small round end cap can rotate in the small round end mounting groove; at the same time, the small round end cap is fixed to the central connecting shaft to prevent the frustum-shaped metal rubber damping element from coming off.

[0031] In this embodiment, to avoid interference, the connecting plate extends outward from the edge of the central disk into the area clamped by the large round ends of two frustum-shaped metal rubber dampers. A fixing plate 11 is connected to the extended edge. The edges of the connecting plate other than those facing the central disk are all within the area clamped by the large round ends of the two frustum-shaped metal rubber dampers. That is, except for the edge of the connecting plate facing the central disk, the other edges do not exceed the area clamped by the large round ends of the two frustum-shaped metal rubber dampers, thus avoiding collision between the connecting plate and the inner wall of the circular groove. A telescopic structure 12 is connected between the fixing plate and the central disk. When in use, when subjected to vibration or impact loads, the horizontal vibration energy is evenly distributed from the central disk to the frustum-shaped metal rubber dampers through the telescopic structure, which can absorb and mitigate the vibration energy transmitted to the structure.

[0032] In this embodiment, the specific structure of the telescopic structure is as follows: the telescopic structure includes a telescopic sleeve 13, one end of which is closed, and the other end has a screw hole 14. A screw rod 15 is screwed onto the screw hole end of the telescopic sleeve, and the other end of the screw rod is rotatably connected to a fixed plate. A connecting rod 16 is installed on the closed end of the telescopic sleeve, and the other end of the connecting rod is fixed to the outer periphery of the central plate. At the same time, a fastening screw hole communicating with the screw hole is opened on the outer wall of the telescopic sleeve. A fastening bolt 17 for further fixing the screw rod is screwed into the fastening screw hole. The telescopic structure can adjust the pre-tightening of the length control device, so that the external load can be more evenly distributed to each vibration isolation element through the adjustable pre-tightening support leg, reducing local overload phenomenon and improving the stability and service life of the overall structure.

[0033] In this embodiment, the upper surface of the buffer pad has a plurality of upper annular cavities 18 with progressively increasing diameters arranged from the center outwards, and the lower surface of the buffer pad has a plurality of lower annular cavities 19 with progressively increasing diameters arranged from the center outwards. The upper and lower annular cavities are arranged alternately, dividing the buffer pad into a corrugated disk. The annular structure makes the stress distribution more uniform, and the corrugated structure design allows it to withstand larger elastic deformation. The internal cavities reduce local stiffness. When subjected to vibration or impact, the cavities deform, weakening the vibration transmission. At the same time, the cavities absorb and disperse impact or vibration energy through compression, reducing instantaneous stress peaks and energy transmission, and reducing damage to equipment or structures. Since the buffer pad is corrugated, the upper crest area can be fixed to the central disk, and the lower trough area can be fixed to the supporting base.

[0034] In this embodiment, the buffer pad is made of metal rubber, and all metal rubber components in this device are made from metal wire mesh. The internal unit structure of the metal wire mesh is shown in the attached figure. Figure 6 As shown, the device is formed by multiple interwoven metal wires, which contain complex contact points and friction interfaces. This allows the metal-rubber parts to effectively absorb and dissipate vibration energy when subjected to force, exhibiting excellent vibration reduction and energy dissipation capabilities. The remaining non-vibration-damping components are made of stainless steel, enabling them to operate stably for a long time in harsh environments such as high temperature, high vacuum, and strong radiation. Furthermore, stainless steel has high strength and fatigue resistance, and can withstand long-term cyclic loads, effectively mitigating the degradation of vibration isolation performance caused by material aging, thereby improving the reliability and service life of the equipment.

[0035] A method for using an all-metal vibration isolation buffer device for the protection of spaceborne equipment: Before use, based on the structural size requirements and vibration reduction performance requirements in the load direction during product use, select metal rubber damping components with different damping parameters, rationally design the geometric parameters of the corrugations and cavities of the buffer pad, optimize the dynamic response characteristics of the vibration isolation system, and achieve specific damping characteristics by adjusting the relative density, weaving method, porosity and preload of the metal rubber, thereby adjusting the load-bearing capacity and vibration isolation performance of the system to ensure that the overall structure has excellent vibration reduction effect and environmental adaptability. In use, the end of the protected element is positioned next to the center. When subjected to vibration or impact loads, the horizontal vibration energy is evenly distributed from the central disk through the telescopic structure to the frustum-shaped metal-rubber damper, which can absorb and mitigate the vibration energy transmitted to the structure. The vertical vibration energy causes the device to vibrate up and down, at which point the frustum-shaped metal-rubber damper rolls, reducing the friction and wear of the device. The bottom buffer pad deforms through the corrugated surface, weakening the vibration transmission. The annular cavity absorbs and disperses the impact or vibration energy through compression, reducing the instantaneous stress peak and energy transmission, and reducing damage to the equipment or structure.

[0036] This invention, due to its superior resistance to high and low temperatures, fatigue resistance, and omnidirectional vibration isolation and buffering performance, can provide efficient and stable vibration isolation and buffering effects in extreme environments. Its all-metal, multi-directional vibration isolation and buffering structure enables it to replace traditional rubber vibration isolators and can be applied in fields such as spaceborne, aerospace, precision instruments, shipboard equipment, and high-speed transportation to reduce the impact of vibration on critical equipment, improve system stability and service life, and meet the application requirements of high reliability and long lifespan.

[0037] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0038] If the terms "first" or "second" are used in this document to specify components, those skilled in the art should know that the use of "first" or "second" is merely for the purpose of distinguishing components in description, and unless otherwise stated, the above terms have no special meaning.

[0039] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0040] Furthermore, the orientations or positional relationships indicated by terms such as "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in any of the technical solutions disclosed in this utility model are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this patent. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent. In addition, unless otherwise stated, the terms used to indicate shape in any of the technical solutions disclosed in this utility model include shapes that are similar to, close to, or approximate with it.

[0041] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A full-metal vibration isolation and damping device for spaceborne equipment protection, characterized in that: It includes a support base, a central disk is provided at the center of the support base, a buffer pad is sandwiched between the central disk and the support base, and several vibration isolation structures are evenly distributed on the outer circumference of the central disk, and the vibration isolation structures are telescopically connected to the central disk.

2. The all-metal vibration isolation and buffer device according to claim 1, characterized in that; The bearing base is provided with a circular groove, the central disk is located in the middle of the bottom of the circular groove, the outer periphery of the vibration isolation structure abuts against the wall of the circular groove, and the buffer pad is sandwiched between the central disk and the bottom of the circular groove.

3. The all-metal vibration isolation and buffer device according to claim 1, characterized in that; The vibration isolation structure includes a vertically arranged connecting plate with a central connecting shaft passing through it. Both ends of the central connecting shaft extend out of the plate on the same side. A frustum-shaped metal-rubber damping element is installed on both ends of the central connecting shaft.

4. The all-metal vibration isolation and buffer device according to claim 3, characterized in that; The frustum-shaped metal-rubber damping component is a rotating structure with an arc-shaped outer wall surface.

5. The all-metal vibration isolation and buffer device according to claim 3, characterized in that; The large circular end of the frustum-shaped metal rubber damper is attached to the connecting plate, and a large circular end cap is installed on the middle part of the large circular end of the frustum-shaped metal rubber damper. A small circular end cap is installed on the middle part of the small circular end of the frustum-shaped metal rubber damper.

6. The all-metal vibration isolation and buffer device according to claim 5, characterized in that; The end of the central connecting shaft passes through the large round end cap and the frustum-shaped metal rubber damping element on the same side and is screwed onto the small round end cap.

7. The all-metal vibration isolation and buffer device according to claim 5, characterized in that; The connecting plate extends outward from the edge of the central disk into the area clamped by the large round ends of two frustoconical metal rubber damping elements. A fixing plate is connected to the extended edge. The connecting plate, except for the edge facing the central disk, is located within the area clamped by the large round ends of the two frustoconical metal rubber damping elements. A telescopic structure connects the fixing plate to the central disk.

8. The all-metal vibration isolation and buffer device according to claim 7, characterized in that; The telescopic structure includes a telescopic sleeve, one end of which is closed and the other end has a screw hole. A screw rod is screwed onto the screw hole end of the telescopic sleeve, and the other end of the screw rod is rotatably connected to a fixed plate. A connecting rod is installed on the closed end of the telescopic sleeve and is fixed to the outer periphery of the central plate.

9. The all-metal vibration isolation and buffer device according to claim 8, characterized in that; The upper surface of the buffer pad has several upper annular cavities with progressively increasing diameters arranged from the center outwards, and the lower surface of the buffer pad has several lower annular cavities with progressively increasing diameters arranged from the center outwards. The upper and lower annular cavities are arranged alternately, and the upper and lower annular cavities divide the buffer pad into a corrugated disc.

10. The all-metal vibration isolation and buffer device according to claim 9, characterized in that; The cushioning pad is made of metal rubber.

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