CN214788813U - Multilayer vibration isolation device for shipborne equipment - Google Patents
Multilayer vibration isolation device for shipborne equipment Download PDFInfo
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- CN214788813U CN214788813U CN202120241219.6U CN202120241219U CN214788813U CN 214788813 U CN214788813 U CN 214788813U CN 202120241219 U CN202120241219 U CN 202120241219U CN 214788813 U CN214788813 U CN 214788813U
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Abstract
The utility model discloses a multilayer vibration isolation device for shipborne equipment, which comprises a middle valve frame plate, and an upper layer vibration isolation element and a lower layer vibration isolation element which are arranged on the upper surface and the lower surface of the middle valve frame plate, wherein the upper layer vibration isolation element and the lower layer vibration isolation element are respectively composed of a plurality of vibration isolators; the vibration isolator comprises a bottom plate, a steel structural member and a rubber member, wherein the rubber member is of an inverted bowl-shaped structure, and the bottom edge of the bowl-shaped structure is connected with the bottom plate through a fixing screw; the steel structure is located inside the bowl-shaped structure, the bottom of the steel structure is fixed on the bottom plate, and the top of the steel structure is connected to the top of the bowl-shaped structure. The utility model discloses a vibration isolation device comprises high quiet rigidity and the nonlinear vibration isolator of low dynamic stiffness and middle valve frame plate, can satisfy the needs of on-board precision instruments multidirectional, wide band in-service use.
Description
Technical Field
The utility model relates to a vibration isolation device, in particular to multilayer vibration isolation device for shipborne equipment.
Background
Vibration and shock phenomena are widely present in everyday life, industrial facilities and marine vessels, and most of these vibrations have a negative effect on the performance of the equipment and on the comfort of the personnel. Therefore, effective isolation of these vibrations is required.
Compared with the land environment, the ship-borne precision instrument is complex and changeable in environmental load, and not only is subjected to the high-frequency vibration action of rotating equipment such as the power of a ship body and electric power, but also is subjected to the low-frequency vibration action of marine environmental load with randomly changed size and direction. The dynamic environmental load has a great influence on the structural strength, measurement accuracy and observation stability of the shipborne precision instrument without the high-efficiency vibration isolator. For example, the existing marine atmosphere monitoring precision observation instrument generally adopts a single-layer vibration isolation structure or a one-way vibration isolation structure, and has the defects of low vibration isolation efficiency and poor multidirectional vibration isolation effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a multi-layer vibration isolation device for shipborne equipment to reach the multidirectional vibration isolation of multilayer, satisfy the purpose that multidirectional, the wide band in-service use needs of shipborne precision instruments.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a multi-layer vibration isolation device for shipborne equipment comprises an intermediate valve frame plate, and an upper layer vibration isolation element and a lower layer vibration isolation element which are arranged on the upper surface and the lower surface of the intermediate valve frame plate, wherein the upper layer vibration isolation element and the lower layer vibration isolation element are respectively formed by a plurality of vibration isolators; the vibration isolator comprises a bottom plate, a steel structural member and a rubber member, wherein the rubber member is of an inverted bowl-shaped structure, and the bottom edge of the bowl-shaped structure is connected with the bottom plate through a fixing screw; the steel structure is located inside the bowl-shaped structure, the bottom of the steel structure is fixed on the bottom plate, and the top of the steel structure is connected to the top of the bowl-shaped structure.
In the above scheme, the steel structure spare includes connecting block, lower connecting block to and connect in last connecting block and the wire rope down between the connecting block, be connected through set screw down between connecting block and the bottom plate, the embedded metal thread spare that has in top of bowl form structure, it passes through stud with metal thread spare lower extreme to go up the connecting block and is connected.
In the above scheme, the middle valve frame plate comprises an upper plate, a lower plate and a diamond rib plate located between the upper plate and the lower plate.
In a further technical scheme, two sides of the middle valve frame plate are provided with U-shaped grooves.
In a further technical scheme, an upper plate is mounted on the upper portion of the upper layer vibration isolation element, and a lower plate is mounted at the bottom of the lower layer vibration isolation element, so that the mounting is convenient.
In the scheme, the number of the steel wire ropes is even, and the steel wire ropes are symmetrically connected between the upper connecting block and the lower connecting block in pairs.
Preferably, the number of the steel wire ropes is 4.
In the scheme, mounting holes are formed in the two sides of the bottom plate in an outward extending mode and are connected with the middle valve frame plate or the upper plate or the lower plate through the mounting holes.
Through the technical scheme, the utility model provides a ship-borne equipment is with multilayer vibration isolation device has following beneficial effect:
the utility model discloses a isolator is the nonlinear vibration isolator of high quiet rigidity, low dynamic stiffness, and its structure provides negative rigidity by the rubber spare, and steel structure provides positive rigidity to can adjust the predeformation volume of steel structure through adjusting stud precession length, thereby adjust wire rope prestressing force, make the positive rigidity of steel structure and the negative rigidity of rubber spare phase-match all the time. The utility model discloses an intermediate valve frame board has great dead weight, provides the high band vibration isolation effect, and the vibration isolation that quasi-zero rigidity isolator is applicable to the low band to, the bowl form structure and the wire rope of rubber spare are the same in plane direction atress effect, can all have better vibration isolation effect to the vibration of plane arbitrary direction. Therefore, the utility model discloses a vibration isolator can satisfy multidirectional, the requirement of wide band.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic view of a multi-layer vibration isolation device for shipborne equipment according to an embodiment of the present invention;
fig. 2 is a schematic view of the vibration isolator according to the embodiment of the present invention;
fig. 3 is a schematic view of a vibration isolator according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of the vibration isolator according to the embodiment of the present invention;
fig. 5 is a schematic view of an intermediate valve frame plate according to an embodiment of the present invention;
fig. 6 is a schematic transverse cross-sectional view of the intermediate valve plate according to an embodiment of the present invention.
In the figure, 1, a lower plate; 2. an intermediate valve frame plate; 3. an upper plate; 4. a vibration isolator; 5. a base plate; 6. a steel structural member; 7. a rubber member; 8. an upper connecting block; 9. a lower connecting block; 10. a wire rope; 11. a set screw; 12. a metal screw; 13. a stud bolt; 14. mounting holes; 15. fixing the bolt; 16. an upper plate; 17. a lower plate; 18. a diamond rib plate; 19. a U-shaped groove.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The utility model provides a ship-borne equipment is with multilayer vibration isolation mounting, as shown in figure 1, including lower plywood 1, middle valve frame plate 2 and upper plate 3, all install several isolator 4 between lower plywood 1 and middle valve frame plate 2 to and between middle valve frame plate 2 and the upper plate 3.
The lower plate 1 is used for fixing the vibration isolation device to the ship body, and the vibration isolator 4 on the lower layer can be directly connected with a ship body clamping plate and the like according to the specific installation condition, and the structure can be omitted. The vibration isolator 4 is a nonlinear vibration isolator 4 with high static stiffness and low dynamic stiffness, provides a quasi-zero stiffness vibration isolator 4, and is suitable for low-frequency-band vibration isolation. The intermediate valve poppet 2 provides high frequency band vibration isolation. The upper plate 3 is connected with a vibration isolation device and instrument equipment needing vibration isolation, and the equipment can be directly connected with the vibration isolator 4 on the upper layer according to the installation condition, so that the structure can be omitted.
As shown in fig. 2 and 4, the vibration isolator 4 comprises a bottom plate 5, a steel structural member 6 and a rubber member 7, wherein the rubber member 7 is an inverted bowl-shaped structure, the bowl-shaped structure is integrally formed, and the bottom edge of the bowl-shaped structure is connected with the bottom plate through a fixing screw 11; the steel structure 6 is located inside the bowl-shaped structure, the bottom of the steel structure 6 is fixed on the bottom plate 5, and the top of the steel structure is connected to the top of the bowl-shaped structure.
As shown in fig. 3 and 4, the steel structural member 6 includes an upper connection block 8, a lower connection block 9, and a steel wire rope 10 connected between the upper connection block 8 and the lower connection block 9, the lower connection block 9 is connected with the bottom plate 5 through a fixing screw 11, a metal screw 12 is embedded in the top of the bowl-shaped structure, and the lower end of the upper connection block 8 is connected with the lower end of the metal screw 12 through a stud 13. The vibration isolation device can adjust the quasi-zero rigidity aiming at instrument equipment with different weights, and the specific method comprises the following steps: the pre-deformation amount of the steel structural member is adjusted by adjusting the screwing length of the stud bolt 13, so that the prestress of the steel wire rope 10 is adjusted, and the positive rigidity of the steel structural member is always matched with the negative rigidity of the rubber member 7.
The steel wire ropes 10 are even and are symmetrically connected between the upper connecting block 8 and the lower connecting block 9 in pairs. In this embodiment, there are 4 wire ropes 10. The bowl-shaped structure and the steel wire rope 10 have the same stress action in the plane direction, so that the vibration isolation structure has a good vibration isolation effect on vibration in any plane direction.
Two sides of the bottom plate 5 extend outwards to form ear-shaped mounting holes 14, and the vibration isolator 4 is fixed on the lower plate 1 or the middle valve frame plate 2 or the upper plate 3 through the mounting holes 14; the vibration isolator 4 is fixed on the top of the middle valve frame plate 2 or the upper plate 3 or the lower plate 1 through a metal screw 12 and a fixing bolt 15. That is, the installation direction of the vibration isolator 4 is not limited to the installation direction in fig. 1, and the installation direction may be adjusted up and down according to the use scene.
As shown in fig. 5 and 6, the intermediate valve poppet 2 includes an upper plate 16, a lower plate 17, and a diamond rib 18 between the upper plate 16 and the lower plate 17. U-shaped grooves 19 are formed in two sides of the middle valve frame plate 2, and the size of the U-shaped grooves 19 is constructed by adopting a topological optimization method. The design of the U-shaped groove 19 can reduce weight and improve the vibration damping effect to a certain extent. The intermediate valve frame plate 2 has a large self-weight, and can reduce the vibration of a high frequency band.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A multi-layer vibration isolation device for shipborne equipment is characterized by comprising an intermediate valve frame plate, and an upper layer vibration isolation element and a lower layer vibration isolation element which are arranged on the upper surface and the lower surface of the intermediate valve frame plate, wherein the upper layer vibration isolation element and the lower layer vibration isolation element are respectively formed by a plurality of vibration isolators; the vibration isolator comprises a bottom plate, a steel structural member and a rubber member, wherein the rubber member is of an inverted bowl-shaped structure, and the bottom edge of the bowl-shaped structure is connected with the bottom plate through a fixing screw; the steel structure is located inside the bowl-shaped structure, the bottom of the steel structure is fixed on the bottom plate, and the top of the steel structure is connected to the top of the bowl-shaped structure.
2. The multi-layer vibration isolating device for shipborne equipment according to claim 1, wherein the steel structural member comprises an upper connecting block, a lower connecting block and a steel wire rope connected between the upper connecting block and the lower connecting block, the lower connecting block is connected with the bottom plate through a fixing screw, a metal thread member is embedded in the top of the bowl-shaped structure, and the upper connecting block is connected with the lower end of the metal thread member through a stud bolt.
3. The multi-layer vibration isolating device for ship-borne equipment according to claim 1, wherein the middle valve frame plate comprises an upper plate, a lower plate and a diamond rib plate located between the upper plate and the lower plate.
4. The multi-layer vibration isolating device for ship-borne equipment according to claim 1 or 3, wherein U-shaped grooves are formed on two sides of the middle valve frame plate.
5. The multi-layered vibration isolating device for ship-borne equipment according to claim 1, wherein an upper plate is mounted on the upper part of said upper vibration isolating member, and a lower plate is mounted on the bottom of said lower vibration isolating member.
6. The multi-layer vibration isolating device for shipboard equipment according to claim 2, wherein the number of the steel wire ropes is even, and the steel wire ropes are connected between the upper connecting block and the lower connecting block in a pairwise symmetry manner.
7. The multi-layer vibration isolating device according to claim 6, wherein the number of the wire ropes is 4.
8. The multi-layered vibration isolating device for ship-borne equipment according to claim 5, wherein mounting holes are extended outward from both sides of the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120241219.6U CN214788813U (en) | 2021-01-28 | 2021-01-28 | Multilayer vibration isolation device for shipborne equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120241219.6U CN214788813U (en) | 2021-01-28 | 2021-01-28 | Multilayer vibration isolation device for shipborne equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214788813U true CN214788813U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120241219.6U Active CN214788813U (en) | 2021-01-28 | 2021-01-28 | Multilayer vibration isolation device for shipborne equipment |
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| CN (1) | CN214788813U (en) |
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2021
- 2021-01-28 CN CN202120241219.6U patent/CN214788813U/en active Active
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