CN213954234U - Double-spring variable-stiffness vibration isolator - Google Patents
Double-spring variable-stiffness vibration isolator Download PDFInfo
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- CN213954234U CN213954234U CN202023112666.6U CN202023112666U CN213954234U CN 213954234 U CN213954234 U CN 213954234U CN 202023112666 U CN202023112666 U CN 202023112666U CN 213954234 U CN213954234 U CN 213954234U
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- mounting plate
- spring
- lower mounting
- vibration isolator
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Abstract
The utility model provides a double-spring variable-stiffness vibration isolator, which comprises an upper mounting plate, a lower mounting plate and at least two groups of damping components arranged between the upper mounting plate and the lower mounting plate; the damping assembly comprises a large spring and a small spring which are arranged in a concentric manner, and two ends of the large spring respectively abut against the upper mounting plate and the lower mounting plate; the device is characterized by further comprising a damper, wherein two ends of the damper are fixedly connected with the upper mounting plate and the lower mounting plate respectively. The utility model discloses utilize two springs of size to reach the shock attenuation effect of becoming rigidity, compact structure bearing capacity is big, satisfies heavy vehicles's such as guided missile car load requirement.
Description
Technical Field
The utility model relates to a isolator, especially a two change rigidity isolator of putting spring.
Background
At present, most of vibration isolators used in vehicles adopt single springs, and particularly when the vibration isolators are used in missile vehicles, the load and the compression amount of the vibration isolators are increased in a single linear ratio, and the vibration absorption of the missile vehicles in a loading state can not be realized by the load of the vibration isolators under the maximum compression amount.
Disclosure of Invention
To the not enough of existence among the prior art, the utility model provides a two change rigidity isolator of putting spring has variable rigidity shock-absorbing function, and the biggest load capacity can reach 100 kilograms, is suitable for more in the guided missile car. The utility model adopts the technical proposal that:
a double-spring variable-stiffness vibration isolator comprises an upper mounting plate, a lower mounting plate and at least two groups of damping components arranged between the upper mounting plate and the lower mounting plate;
the damping assembly comprises a large spring and a small spring which are arranged in a concentric manner, and two ends of the large spring respectively abut against the upper mounting plate and the lower mounting plate;
the device is characterized by further comprising a damper, wherein two ends of the damper are fixedly connected with the upper mounting plate and the lower mounting plate respectively.
Preferably, the damping assemblies are arranged in two groups, and the two groups of damping assemblies are symmetrically distributed on two sides of the damper and are arranged between the upper mounting plate and the lower mounting plate.
Preferably, go up the mounting panel bottom and be equipped with the detachable upper bracket, the mounting panel top is equipped with the detachable undersetting down, big spring both ends joint is between upper bracket and undersetting.
Preferably, the outer peripheral surface of the lower part of the upper support is provided with a clamping ring, the top of the small spring is arranged on the lower side of the clamping ring, and the outer diameter of the small spring is smaller than the diameter of the clamping ring.
Preferably, a first threaded hole is formed in the top of the upper mounting plate, a first external thread is formed in the outer peripheral surface of the top of the upper support, and the upper support is in threaded connection with the upper mounting plate through the first external thread and the first threaded hole.
Preferably, the top of the lower mounting plate is provided with a second threaded hole, the outer peripheral surface of the bottom of the lower support is provided with a second external thread in a staggered mode, and the lower support is in threaded connection with the lower mounting plate through the second external thread and the second threaded hole.
The utility model has the advantages that: the small spring has zero deformation in an idle state and a small load state, the small spring is suitable for the condition that the missile vehicle is not loaded in the idle state, the load is gradually increased along with the increase of the loaded missile, the small spring starts to be compressed after the large spring is compressed to a certain state, the two springs jointly act, the maximum load capacity is improved, the integral damping effect is guaranteed, and the purpose of variable-rigidity damping is achieved.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a graph of overall height as a function of load.
In the figure, 1-upper mounting plate, 2-upper support, 3-lower mounting plate, 4-damper, 5-large spring, 6-small spring, 7-lower support and 201-snap ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a dual spring stiffness-varying vibration isolator, which comprises an upper mounting plate 1, a lower mounting plate 3, and at least two sets of damping assemblies disposed between the upper mounting plate 1 and the lower mounting plate 3.
The damping assembly comprises a large spring 5 and a small spring 6, the large spring 5 and the small spring 6 are arranged in the same core, and two ends of the large spring 5 respectively abut against the upper mounting plate 1 and the lower mounting plate 3. In practical use, the middle of the large spring 5 is 70mm, the free height of the large spring is 140mm, and the diameter of the material of the large spring is 8mm, and the middle of the small spring 6 is 45mm, the free height of the small spring is 65mm, and the diameter of the small spring is 10 mm.
The damper is characterized by further comprising a damper 4, wherein two ends of the damper 4 are fixedly connected with the upper mounting plate 1 and the lower mounting plate 3 respectively, and the damper 4 can be a dry friction type damper, a liquid damper, an electromagnetic type damper and other dampers with the same function.
The shock absorption components are arranged in two groups, the two groups of shock absorption components are symmetrically distributed on two sides of the damper 4 and are arranged between the upper mounting plate 1 and the lower mounting plate 3, and the two groups of shock absorption components are distributed on two sides of the damper 4 for uniform shock absorption.
Go up 1 bottom of mounting panel and be equipped with detachable upper bracket 2, 3 tops of lower mounting panel are equipped with detachable undersetting 7, and 5 both ends joints of big spring are between upper bracket 2 and undersetting 7, and dismantled and assembled upper bracket 2 not only plays the motion guide effect, still convenient the change, and when the in-service use, the cavity form can be made to upper bracket 2, reduces holistic weight.
Be equipped with snap ring 201 on the peripheral surface of 2 lower parts of upper bracket, the external diameter that 6 tops of little spring set up at snap ring 201 downside and little spring 6 is less than the diameter of snap ring 201, when in-service use, snap ring 201 can make and upper bracket 2 structure as an organic whole, also can assemble with upper bracket 2 as a removable part alone, snap ring 201 pushes down little spring 6 with little spring 6 contact back, reach dual absorbing effect, the cavity form also can be made to bottom suspension 7, reduce holistic weight.
Go up 1 top processing of mounting panel threaded hole one, processing has external screw thread one on the 2 top outer peripheral faces of upper bracket, and upper bracket 2 is through external screw thread one and threaded hole one and the 1 spiro union of last mounting panel, and when the in-service use, go up mounting panel 1 and upper bracket 2 also can directly peg graft or joint, guarantee that upper bracket 2 can not rock at the horizontal direction can.
3 top processing threaded hole two of lower mounting panel, the intersection has external screw thread two on the 7 bottom outer peripheral faces of undersetting, and undersetting 7 passes through external screw thread two and threaded hole two and the 3 spiro union of lower mounting panel, and when in actual use, lower mounting panel 3 also can directly peg graft or joint with undersetting 7, guarantees that undersetting 7 can not rock at the horizontal direction can.
The working principle is as follows:
under the no-load state, the free height of whole device is 185mm, along with the increase of load, big spring 5 compresses gradually, reaches preliminary shock attenuation effect, when big spring 5 compressed to the height of whole device is 150mm, snap ring contact little spring 6 on the upper bracket 2 and compress little spring 6 to big spring 5 compresses jointly with little spring 6, reach the absorbing effect of variable rigidity, the load is bigger under the same deformation volume, the biggest load capacity can reach 100 kilograms, be applicable to big load equipment such as guided missile car more.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a two change rigidity isolator of putting spring which characterized in that: the damping device comprises an upper mounting plate (1), a lower mounting plate (3) and at least two groups of damping components arranged between the upper mounting plate (1) and the lower mounting plate (3);
the damping assembly comprises a large spring (5) and a small spring (6), the large spring (5) and the small spring (6) are arranged in the same core, and two ends of the large spring (5) are respectively abutted against the upper mounting plate (1) and the lower mounting plate (3);
the device is characterized by further comprising a damper (4), wherein two ends of the damper (4) are fixedly connected with the upper mounting plate (1) and the lower mounting plate (3) respectively.
2. The dual spring variable stiffness vibration isolator according to claim 1, wherein: the shock absorption components are arranged in two groups, and the two groups of shock absorption components are symmetrically distributed on two sides of the damper (4) and are arranged between the upper mounting plate (1) and the lower mounting plate (3).
3. The dual spring variable stiffness vibration isolator according to claim 2, wherein: go up mounting panel (1) bottom and be equipped with detachable upper bracket (2), mounting panel (3) top is equipped with detachable undersetting (7) down, big spring (5) both ends joint is between upper bracket (2) and undersetting (7).
4. The dual spring variable stiffness vibration isolator according to claim 3, wherein: be equipped with snap ring (201) on upper bracket (2) lower part outer peripheral face, little spring (6) top sets up the diameter that the external diameter that just little spring (6) in snap ring (201) downside is less than snap ring (201).
5. The dual spring variable stiffness vibration isolator according to claim 3, wherein: the top of the upper mounting plate (1) is provided with a first threaded hole, the outer peripheral surface of the top of the upper support (2) is provided with a first external thread, and the upper support (2) is in threaded connection with the upper mounting plate (1) through the first external thread and the first threaded hole.
6. The dual spring variable stiffness vibration isolator according to claim 3, wherein: threaded hole two is processed at lower mounting panel (3) top, it has external screw thread two to hand over on the outer peripheral face of bottom of undersetting (7), undersetting (7) are through external screw thread two and threaded hole two and mounting panel (3) spiro union down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023112666.6U CN213954234U (en) | 2020-12-22 | 2020-12-22 | Double-spring variable-stiffness vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023112666.6U CN213954234U (en) | 2020-12-22 | 2020-12-22 | Double-spring variable-stiffness vibration isolator |
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| Publication Number | Publication Date |
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| CN213954234U true CN213954234U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023112666.6U Active CN213954234U (en) | 2020-12-22 | 2020-12-22 | Double-spring variable-stiffness vibration isolator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115123652A (en) * | 2022-06-22 | 2022-09-30 | 中国科学院国家天文台南京天文光学技术研究所 | Rigidity self-adjusting vibration isolation packaging box |
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2020
- 2020-12-22 CN CN202023112666.6U patent/CN213954234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115123652A (en) * | 2022-06-22 | 2022-09-30 | 中国科学院国家天文台南京天文光学技术研究所 | Rigidity self-adjusting vibration isolation packaging box |
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