CN114458724B - High static low dynamic vibration damping and impact resistant compatible component with gradual instability of hemisphere and wall surface - Google Patents
High static low dynamic vibration damping and impact resistant compatible component with gradual instability of hemisphere and wall surface Download PDFInfo
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- CN114458724B CN114458724B CN202210231743.4A CN202210231743A CN114458724B CN 114458724 B CN114458724 B CN 114458724B CN 202210231743 A CN202210231743 A CN 202210231743A CN 114458724 B CN114458724 B CN 114458724B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
Abstract
The invention provides a high static low dynamic vibration damping and impact resistant compatible component with a hemisphere and a wall surface gradually unstable, which relates to the technical field of vibration damping and comprises an upper connecting piece, a main body structure and a lower connecting piece, wherein the upper connecting piece is connected to the top of the main body structure, and the lower connecting piece is connected to the bottom of the main body structure; the main body structure comprises a hemispherical surface, a cylindrical wall surface and a fan-shaped straight wall surface, wherein the cylindrical wall surface is arranged in the hemispherical surface, and the cylindrical wall surface is connected with the hemispherical surface through a plurality of fan-shaped straight wall surfaces; when the upper connecting piece is subjected to gravity load, the hemispherical surface is compressed firstly, when the gap between the hemispherical surface and the lower connecting piece is compressed, the main body structure is compressed continuously, the hemispherical surface and the cylindrical wall surface are constrained by the fan-shaped straight wall surface, and a high static and low dynamic area for vibration reduction and buffering is formed after the main body structure is unstable. The invention has the advantages of low mass cost, good integrity and high design flexibility, and can achieve the required high static stiffness and low dynamic stiffness through the design of gaps, wall thickness and the number of the fan-shaped straight walls.
Description
Technical Field
The invention relates to the technical field of vibration reduction, in particular to a high-static low-dynamic vibration reduction and impact resistance compatible component with gradual instability of a hemisphere and a wall surface.
Background
The shipboard equipment, the airborne/shipboard high-precision payload and the like have strict requirements on vibration control, three-way vibration transmission needs to be controlled simultaneously due to the special application environment of the shipboard and the airborne, and meanwhile, the equipment or the payload inevitably receives impact load action under different task profiles of ships, airplanes and the like, so that if vibration control is performed by adopting measures such as vibration reduction and isolation, the capability of three-way vibration control needs to be provided, and rigid touch cannot occur under the impact load action.
Two key factors of vibration control are rigidity and damping, the lower natural frequency can realize vibration attenuation of a broadband, but the lower natural frequency corresponds to larger deformation, and the conventional vibration-damping and impact-resistant component is difficult to realize high static rigidity and low dynamic rigidity at the same time. Or unidirectional high static rigidity and low dynamic rigidity can be realized, but the rigidity in the other two directions is influenced. And the realization of the high static rigidity and low dynamic rigidity usually needs auxiliary resources such as electricity, gas, magnetism and the like, and for the occasions such as carrier-borne or airborne vehicles with high requirements on additional volume and mass and electromagnetic shielding, a vibration-damping and impact-resistant component with friendly material structure needs to be developed.
The patent document search of the prior art finds that Chinese invention patent publication No. CN109404464B discloses a pendulum type high static low dynamic vibration isolator, which belongs to the technical field of vibration isolation, performs vibration isolation of lower frequency, has wider vibration isolation frequency band and good vibration isolation effect. Including slider, rigid bar, vertical spring, left side oblique spring, right side oblique spring, spout, straight-bar, wherein: the sliding block is sleeved on the straight rod, the lower end of the sliding block is fixed through the vertical spring, and the sliding block can move up and down along the vertical direction of the straight rod; the upper end of the vertical spring is connected with the sliding block, and the lower end of the vertical spring is fixed; the sliding block is connected with two ends of the rigid rod through a left inclined spring and a right inclined spring; the two ends of the rigid rod slide in the sliding grooves. The invention provides a high-static low-dynamic vibration reduction and impact resistance compatible component with a hemisphere and a wall surface gradually unstable, and solves the problems that the component cannot simultaneously have the capability of three-dimensional vibration control, and rigid collision occurs under the action of impact load. Therefore, the method disclosed in the document and the invention belong to different inventive concepts.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-static low-dynamic vibration-damping impact-resistant compatible component with a hemisphere and a wall surface gradually unstable.
The high-static low-dynamic vibration reduction and impact resistance compatible component with the semisphere and the wall surface gradually unstable comprises an upper connecting piece, a main body structure and a lower connecting piece, wherein the upper connecting piece is connected to the top of the main body structure, and the lower connecting piece is connected to the bottom of the main body structure;
the main body structure comprises a hemispherical surface, a cylindrical wall surface and a fan-shaped straight wall surface, wherein the cylindrical wall surface is arranged in the hemispherical surface, and the cylindrical wall surface is connected with the hemispherical surface through a plurality of fan-shaped straight wall surfaces;
when the upper connecting piece is subjected to gravity load, the hemispherical surface is compressed firstly, when the gap between the hemispherical surface and the lower connecting piece is compressed, the main body structure is compressed continuously, the hemispherical surface and the cylindrical wall surface are constrained by the fan-shaped straight wall surface, and a high static and low dynamic area for vibration reduction and buffering is formed after the main body structure is unstable.
In some embodiments, the upper connecting piece is provided with internal threads, the top of the upper connecting piece is connected to the connected structure through a bolt, and the bottom of the upper connecting piece is connected to the hemispherical surface.
In some embodiments, the upper connection is vulcanized onto the hemispherical top deck.
In some embodiments, the upper connector is inverted T-shaped.
In some embodiments, through holes are distributed on the lower connecting piece, the bottom of the lower connecting piece is connected to the connected structure through holes and bolts, and the top of the lower connecting piece is connected to the hemispherical surface.
In some embodiments, the lower connector is vulcanized onto the hemispherical bottom flap.
In some embodiments, the cavity between the lower connector and the hemispherical surface is a closed cavity.
In some embodiments, the lower connecting member is in the shape of a letter.
In some embodiments, the shape of the cylindrical wall comprises a truncated cone.
In some embodiments, the straight wall has an aperture therein.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention has low mass cost, good integrity and large design flexibility, and can provide flatter rigidity in large deformation after instability by utilizing the strong bearing capacity of the hemisphere structure of the main body structure;
(2) according to the invention, the cylindrical wall surface and the hemispherical surface are mutually constrained by the fan-shaped straight wall surface, so that the cylindrical wall surface and the hemispherical surface are prevented from collapsing after buckling, the direct bottom contact after densification is avoided, and an automatic limiting densification area is formed;
(3) the invention achieves the required high static rigidity and low dynamic rigidity through the design of gaps, wall thickness and the number of the fan-shaped straight wall surfaces, provides reasonable transverse rigidity, and can not generate the phenomena of blocking and the like under large deformation.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a structural cross-sectional view of the present invention;
FIG. 2 is a measured stiffness curve in an embodiment of the invention.
The reference numbers in the figures are:
the connecting structure comprises an upper connecting piece 1, a main body structure 2, a hemispherical surface 21, a cylindrical wall surface 22, a fan-shaped straight wall surface 23 and a lower connecting piece 3.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the invention.
Examples
According to the high static and low dynamic vibration damping and impact resistant compatible component with the semisphere and the wall surface gradually unstable, as shown in fig. 1, the component comprises an upper connecting piece 1, a main body structure 2 and a lower connecting piece 3, wherein the upper connecting piece 1 is connected to the top of the main body structure 2, and the lower connecting piece 3 is connected to the bottom of the main body structure 2. The main structure 2 comprises a hemispherical surface 21, a cylindrical wall surface 22 and a fan-shaped straight wall surface 23, wherein the cylindrical wall surface 22 is arranged inside the hemispherical surface 21, and the cylindrical wall surface 22 is connected with the hemispherical surface 21 through the fan-shaped straight wall surfaces 23. Preferably, the cylindrical wall 22 may be in the shape of a truncated cone, and is designed according to the requirements of a platform with high static stiffness and low dynamic stiffness. The straight wall surface 23 can be dug in the middle, at the bottom, etc., and is designed according to the requirements of the platform with high static rigidity and low dynamic rigidity.
Go up connecting piece 1 and be the type of falling T, upward be equipped with the internal thread on connecting piece 1, go up 1 top bolted connection of connecting piece on by connection structure, go up 1 bottom of connecting piece and vulcanize on hemisphere face 21's top platform. The lower connecting piece 3 is convex. The lower connecting piece 3 is vulcanized on the turned edge at the bottom of the hemispherical surface 21, and the cavity between the lower connecting piece 3 and the hemispherical surface 21 is a closed cavity. Through holes are distributed on the lower connecting piece 3, and the bottom of the lower connecting piece 3 is fixed on a connected structure through hole bolts.
The working principle is as follows:under the action of gravity load of a connected structure connected with the upper connecting piece 1, firstly compressing the hemispherical surface 21 structure, after the gap between the hemispherical surface 21 structure and the lower connecting piece 3 is compressed, continuing to compress the hemispherical surface 21-cylindrical wall surface 22-fan-shaped straight wall surface23, the thickness of the hemispherical surface 21, the cylindrical wall surface 22 and the fan-shaped straight wall surface 23 are matched, and the hemispherical surface 21 is buckled and destabilized under the action of gravity, so that a first high static and low dynamic area is obtained and is used for damping; when an impact occurs, since the impact load is usually several times the static load, the cylindrical wall 22 is then destabilized to form a second region of high static stiffness and low stiffness for cushioning; then, as the deformation increases, the fan-shaped straight wall surface 23 also deforms greatly, but the fan-shaped straight wall surface 23 restrains the cylindrical wall surface 22 and the hemispherical surface 21 from collapsing after buckling, so that direct bottoming after densification is avoided, and a densified area is formed and used for automatic limiting. The above stiffness variation process can be clearly seen from the measured stiffness curve shown in fig. 2. Furthermore, the air enclosing the cavity between the body structure 2 and the lower connecting member 3 may also provide a certain stiffness.
The transverse rigidity of the vibration-damping and impact-resistant component is not influenced by the hemispherical surface 21, the cylindrical wall surface 22 and the fan-shaped straight wall surface 23, the reasonable transverse rigidity can be provided, and the phenomena of clamping and the like can not occur under large deformation. Therefore, the defect that the existing high static low dynamic vibration isolator can only realize unidirectional high static low dynamic and rigid constraint in other directions is overcome. The vibration-damping and impact-resistant component utilizes the characteristics that the hemispherical structure has strong bearing capacity and can still provide relatively flat rigidity in large deformation after instability, a designable wide-range high static rigidity and low dynamic rigidity region can be provided, and a wide-range working point can be realized in a large load variation range. The vibration-damping and impact-resistant component has the advantages of low quality cost, good integrity and high design flexibility, and can achieve the required high static rigidity and low dynamic rigidity through the design of gaps, wall thickness and the number of the fan-shaped straight walls.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A high static low dynamic vibration reduction and impact resistance compatible component with a hemisphere and a wall surface gradually unstable is characterized by comprising an upper connecting piece (1), a main body structure (2) and a lower connecting piece (3), wherein the upper connecting piece (1) is connected to the top of the main body structure (2), and the lower connecting piece (3) is connected to the bottom of the main body structure (2);
the main body structure (2) comprises a hemispherical surface (21), a cylindrical wall surface (22) and fan-shaped straight wall surfaces (23), the cylindrical wall surface (22) is arranged in the hemispherical surface (21), and the cylindrical wall surface (22) is connected with the hemispherical surface (21) through the fan-shaped straight wall surfaces (23);
when the upper connecting piece (1) is subjected to gravity load, the hemispherical surface (21) is compressed, when the gap between the hemispherical surface (21) and the lower connecting piece (3) is compressed, the main body structure (2) is compressed continuously, the hemispherical surface (21) and the cylindrical wall surface (22) are constrained by the fan-shaped straight wall surface (23), and a high static and low dynamic area for vibration reduction and buffering is formed after the main body structure (2) is unstable.
2. The hemisphere and wall gradually destabilized high static low dynamic vibration damping and impact resistant compatible component as claimed in claim 1, wherein the upper connecting member (1) is provided with internal threads, the top of the upper connecting member (1) is bolted to a connected structure, and the bottom of the upper connecting member (1) is connected to the hemisphere (21).
3. The high static and low dynamic vibration damping and impact resistant compatible component with gradually destabilized hemisphere and wall surface according to claim 2, characterized in that the upper connecting piece (1) is vulcanized on the top platform of the hemisphere (21).
4. The hemisphere and wall gradually destabilized high static low dynamic vibration damping and impact resistant compatible component as recited in claim 1, wherein the upper connecting member (1) is in an inverted T shape.
5. The high static low dynamic vibration damping and impact resistant compatible component with the gradually destabilized hemisphere and wall surface according to claim 1, wherein through holes are distributed on the lower connecting piece (3), the bottom of the lower connecting piece (3) is connected to a connected structure through the through holes by bolts, and the top of the lower connecting piece (3) is connected to the hemisphere surface (21).
6. A high static and low dynamic vibration damping and impact resistant compatible component with gradually destabilized hemisphere and wall surface according to claim 5, characterized in that the lower connecting piece (3) is vulcanized on the bottom flange of the hemisphere (21).
7. The hemisphere and wall gradually destabilized high static low dynamic vibration damping and impact resistant compatible component as claimed in claim 5, wherein the cavity between the lower connecting member (3) and the hemisphere (21) is a closed cavity.
8. The hemisphere and wall gradually destabilized high static low dynamic vibration damping and impact resistant compatible component of claim 1, wherein the lower connecting member (3) is convex.
9. A high static and low dynamic vibration damping and impact resistant compatible component with gradual semispherical and wall destabilization according to claim 1, characterized in that the shape of said cylindrical wall surface (22) comprises a truncated cone shape.
10. The high static and low dynamic vibration damping and impact resistant compatible component with gradual instability of hemispheres and wall surfaces as claimed in claim 1, wherein the fan-shaped straight wall surface (23) is provided with holes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231743.4A CN114458724B (en) | 2022-03-09 | 2022-03-09 | High static low dynamic vibration damping and impact resistant compatible component with gradual instability of hemisphere and wall surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210231743.4A CN114458724B (en) | 2022-03-09 | 2022-03-09 | High static low dynamic vibration damping and impact resistant compatible component with gradual instability of hemisphere and wall surface |
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| CN114458724A CN114458724A (en) | 2022-05-10 |
| CN114458724B true CN114458724B (en) | 2022-09-23 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009196045A (en) * | 2008-02-22 | 2009-09-03 | Kurashiki Kako Co Ltd | Rubber turning-over device |
| CN105202105A (en) * | 2015-09-21 | 2015-12-30 | 北京空间飞行器总体设计部 | Omni-directional vibration isolator |
| CN105889384A (en) * | 2014-09-15 | 2016-08-24 | 中国人民解放军军械工程学院 | A metal rubber combination shock absorber |
| CN209012097U (en) * | 2018-09-18 | 2019-06-21 | 应辉 | A kind of bladeless fan with vertical and horizontal shock-absorbing function |
| CN112855848A (en) * | 2021-01-28 | 2021-05-28 | 山东省科学院海洋仪器仪表研究所 | Multilayer vibration isolation device for shipborne equipment |
| CN113246841A (en) * | 2021-06-08 | 2021-08-13 | 广州赠紫源网络科技有限公司 | Commodity circulation transfer device of anticollision |
| CN214838110U (en) * | 2021-02-01 | 2021-11-23 | 湖南有色冶金劳动保护研究院 | Damping base for mining machinery equipment |
-
2022
- 2022-03-09 CN CN202210231743.4A patent/CN114458724B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009196045A (en) * | 2008-02-22 | 2009-09-03 | Kurashiki Kako Co Ltd | Rubber turning-over device |
| CN105889384A (en) * | 2014-09-15 | 2016-08-24 | 中国人民解放军军械工程学院 | A metal rubber combination shock absorber |
| CN105202105A (en) * | 2015-09-21 | 2015-12-30 | 北京空间飞行器总体设计部 | Omni-directional vibration isolator |
| CN209012097U (en) * | 2018-09-18 | 2019-06-21 | 应辉 | A kind of bladeless fan with vertical and horizontal shock-absorbing function |
| CN112855848A (en) * | 2021-01-28 | 2021-05-28 | 山东省科学院海洋仪器仪表研究所 | Multilayer vibration isolation device for shipborne equipment |
| CN214838110U (en) * | 2021-02-01 | 2021-11-23 | 湖南有色冶金劳动保护研究院 | Damping base for mining machinery equipment |
| CN113246841A (en) * | 2021-06-08 | 2021-08-13 | 广州赠紫源网络科技有限公司 | Commodity circulation transfer device of anticollision |
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