CN106594162A - Hydraulic power antiresonance isolation device - Google Patents
Hydraulic power antiresonance isolation device Download PDFInfo
- Publication number
- CN106594162A CN106594162A CN201611118153.1A CN201611118153A CN106594162A CN 106594162 A CN106594162 A CN 106594162A CN 201611118153 A CN201611118153 A CN 201611118153A CN 106594162 A CN106594162 A CN 106594162A
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- Prior art keywords
- hydraulic
- cylinder
- mass
- hydraulic cylinder
- base
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Classifications
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
Abstract
The invention discloses a hydraulic power antiresonance isolation device. The hydraulic power antiresonance isolation device comprises a hydraulic cylinder, a welding corrugated pipe, a main mass, a base, spiral springs and a suspension mass; the welding corrugated pipe, the main mass, the base, the suspension mass and the hydraulic cylinder are coaxially arranged; the suspension mass is sealed at one end of the welding corrugated pipe; the other end of the welding corrugated pipe is communicated with the hydraulic cylinder; the main mass is connected with the hydraulic cylinder for driving hydraulic oil in the hydraulic cylinder to perform a linear reciprocating motion; the base is used for supporting the hydraulic cylinder; the spiral springs are connected between the main mass and the base; multiple spiral springs are provided, and are uniformly arranged in the peripheral direction of the main mass; and the hydraulic cylinder is a single-piston rod single-acting hydraulic cylinder. Compared with the prior art, the hydraulic power antiresonance isolation device is easy to realize high lever ratio, simple in structure, easy to determine a main spring rigidity value, excellent in spring rigidity linearity, adjustable in parameters and convenient to disassemble.
Description
Technical field
The present invention relates to engineering structure vibration isolation field, and in particular to a kind of hydraulic power anti-resonance vibration isolating device.
Background technology
Propeller is the main propulsion plant of ship and naval vessels.Ship stern is uneven come the space flowed and the time is uneven
It is two kinds of driving sources that longitudinal pulsating force is produced at blade.Space is uneven to mainly result in the leaf related to rotating speed frequently and its frequency multiplication
Feature, with obvious arrowband line spectrum feature, and the time it is uneven mainly result in wide-band excitation, and induce consolidating for oar-axle system
There are vibration, including propeller natural mode of vibration and shafting single order longitudinal mode.Both pulsating forces are particularly longitudinal low-frequency component, by
Its caused hull extensional vibration accounts for a big chunk of hull acoustic radiation, and they are mainly delivered to hull by two kinds of paths,
One is to be transferred to hull by stern fluid, and two is to act on thrust bearing by shafting to be finally transmitted to hull.By thrust
Bearing causes the main bang path that ship hull vibration is pulsating force, is the main vibration isolation object of Propulsion Systems extensional vibration.
It is a kind of common method using the isolation low-frequency vibration of power antiresonance structure, it is generally divided into：Active, half master
Dynamic formula, three kinds of shapes of passive type.Theoretical research to power antiresonance shows, when the spring at a certain frequency, being delivered to basis
Elastic force and sprung mass produce inertia force opposite in phase equal in magnitude, it is possible to realize the vibration isolation at the frequency.Due to
The introducing of lever so that only need to less sprung mass, just can realize low frequency vibration isolation, and the damping of simultaneity factor is less, every
Effect of shaking is better.For this reason it would be desirable to using big lever than formula power antiresonance structure, and for mechanical power antiresonance knot
Structure, the space taken required for lever ratio is bigger is also bigger, and hinge is easy to wear, while acting on spring force and hinge on pedestal
The inertia force of transmission does not simultaneously act on same point, and couple can be produced on pedestal, therefore, in engineering practice, it is desirable to be able to look for
Big lever ratio can be realized to one kind, the power antiresonance structure for taking up space again little.
For the ship or submarine of same model, the dynamical structure parameter of its Propulsion Systems keeps constant, therefore height can
By property, high stability, the power antiresonance that the external world provides the passive type of energy is not needed to be more suitable for the longitudinal direction for isolating shafting
Vibration.The patent of invention of Application No. US4781363, discloses one kind using safety glass as main spring, and two sections are not
With corrugated tube for enlarger bellows-type power antiresonance structure, the power antiresonance structure of this form, main spring
Rigidity by safety glass, the first bellows stiffness, the second bellows stiffness and support auxiliary screw spring rate joint effect and
Because the inside is hydraulically full so that rigidity value is very big and with non-linear, so many inconvenience are brought to design work, be difficult to produce
The preferable vibration isolating effect of life.
The content of the invention
The present invention is for not enough present in above-mentioned background technology, it is proposed that a kind of hydraulic power antiresonance vibration isolation dress
Put, by the improvement to traditional power antiresonance structure, solve main spring present in traditional power antiresonance structure non-
Linear strong, rigidity value is big and is difficult the shortcoming for determining.
To solve above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of hydraulic power anti-resonance vibration isolating device, including hydraulic cylinder, welding bellows, principal mass, base, spiral bullet
Spring and sprung mass, the welding bellows, principal mass, base, sprung mass and hydraulic cylinder are coaxially disposed；The welding ripple
One end sealing of pipe arranges a sprung mass, and the other end of the welding bellows is connected with the hydraulic cylinder；The principal mass
It is connected with the hydraulic cylinder, to drive the hydraulic oil straight reciprocating motion in the hydraulic cylinder；The base is to support
State hydraulic cylinder；Connect the helical spring between the principal mass and the base and the helical spring is several, along institute
State principal mass to be arranged circumferentially；The hydraulic cylinder is single-piston rod-type single-action hydraulic cylinder.
Used as a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, the hydraulic cylinder includes cylinder
Cylinder, piston, piston rod and cylinder cap, one end of the cylinder barrel connects with the other end of the welding bellows, and the cylinder cap is located at
The other end of the cylinder barrel, to seal the cylinder barrel；The piston coordinates with the inwall gap of the cylinder barrel, to drive
The hydraulic oil stated in cylinder barrel does straight reciprocating motion；One end of the piston rod is connected with the piston, and the other end is through described
Cylinder cap is connected with the principal mass.
As a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, the welding bellows it is another
One end is provided with flange, and an axial sealing ring is provided between one end of the cylinder barrel and the flange.
Used as a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, isolation mounting also includes burst
Formula end cap, the split blade type end cap is fixed on the end face of one end of the cylinder barrel and fits completely with the flange.
As a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, one end of the cylinder barrel and institute
State base end face to be fixedly connected；The central through hole of the base with diameter greater than the split blade type end cap external diameter, and less than described
The external diameter of cylinder barrel, the height of the base more than the welding bellows length and the sprung mass impulse stroke it
With.
Used as a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, isolation mounting also includes gear
Plate, the other end of the piston rod is machined with positioning shaft shoulder, and the principal mass is located between the baffle plate and the positioning shaft shoulder,
The baffle plate, principal mass are fixedly connected with positioning shaft shoulder by screw.
As a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, the piston and the piston
What bar was integrated.
Used as a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, the bottom of the cylinder barrel is provided with
Oil-in, oil-out and pressure-regulating valve, and the oil-in and oil-out are one-way valve structures, the oil-in and hydraulic pressure
Control system is connected, and the pressure-regulating valve is used for adjusting the static balance pressure in hydraulic cylinder, the critical pressure of the oil-out
Power is set to the twice of internal oil pressure during static balance.
As a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, the quality of the sprung mass
It is adjustable.
As a kind of improvement of hydraulic power anti-resonance vibration isolating device of the present invention, the two ends of the helical spring
It is connected with the principal mass, base by a spring housing respectively.
The purpose of the present invention is a kind of power antiresonance for isolating the hydraulic cylinder type of propeller longitudinal direction perturbed force of design
Structure so as to which simple structure, parameter regulation are convenient, can be reliable and stable in a long time.
The Barrel of Hydraulic Cylinders of the present invention is connected by screw with welding bellows, is bolted with base, integral type
Piston and piston rod it is coaxial with hydraulic cylinder body and for gap cooperation, its end is threaded hole and positioning shaft shoulder, by one
Body formula piston and piston rod, Barrel of Hydraulic Cylinders, welding bellows composition sap cavity, element is amplified in the antiresonance of composition power, by spiral shell
Nail and baffle plate are fixed on parenchyma gauge block on piston rod, and principal mass is welded on thrust disc, i.e., by principal mass and the oar axle of submarine
Composition quality elements, helical spring is separately fixed on principal mass and base by spring housing, and helical spring and thrust block pad are in parallel
Rigidity element is collectively constituted, base is fixed on pedestal.When propeller passes through unstable wake flow, perturbed force will be by latent
Ship shafting is delivered to thrust disc, and thrust disc drives principal mass to vibrate together, and a vibration part for principal mass is made by helical spring
For base and pedestal, another part is amplified sprung mass using enlarger by the piston rod and piston of integral type
Inertia force also pass to submarine pedestal, the two power opposite in phase equal in magnitude at design frequency so that be delivered to pedestal
On power be zero can to realize vibration isolation.
The present invention is a kind of, and sprung mass is adjustable, and the fluid pressure type that vibration isolating effect can be played to submarine shafting longitudinal vibration is moved
Power anti-resonance vibration isolating device, compared with prior art, the hydraulic power anti-resonance vibration isolating device that the present invention is provided has following spy
Point：
1st, it is negligible by rigidity of helical spring relative force bearing longitudinal rigidity, therefore the impact of shaft fore-and-aft control performance
Less.
2nd, sprung mass can according to demand carry out quality adjustment.
3rd, hydraulic cylinder bottom adopts welding bellows, and rigidity is little, and deformation range is big, affects little to system Main rigidity.
Description of the drawings
Fig. 1 is a kind of structural representation of hydraulic power anti-resonance vibration isolating device of one embodiment of the invention；
Fig. 2 is the partial sectional view that the Barrel of Hydraulic Cylinders of one embodiment of the invention and base are connected；
Fig. 3 is the partial sectional view that the welding bellows of one embodiment of the invention is connected with cylinder barrel bottom；
Fig. 4 is a kind of left view of hydraulic power anti-resonance vibration isolating device of one embodiment of the invention.
In figure, 1- bases；2- cylinder barrels；3- split blade type end caps；4- welding bellows；5- sprung masses；6- axial sealing rings；
7- oil-outs；8- pistons；9-O type sealing rings；10- cylinder caps；11- dust-proof seal rings；12- principal mass；13- baffle plates；14- screws；
15- venting plugs；16- screws；17- spring housings；18- helical springs；19- spring housings；20- bolts；21- oil-ins；22- screws；
23- pressure-regulating valves；24- screws.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with each reality of the accompanying drawing to the present invention
The mode of applying is explained in detail.
Please comprehensive reference Fig. 1-4, a kind of hydraulic power anti-resonance vibration isolating device, including hydraulic cylinder, welding bellows 4,
Principal mass 12, base 1, helical spring 18 and sprung mass 5, welding bellows 4, principal mass 12, base 1, sprung mass 5 and liquid
Cylinder pressure is coaxially disposed；One end sealing of welding bellows 4 arranges a sprung mass 5, the other end and hydraulic cylinder of welding bellows 4
Connection；Principal mass 12 is connected with hydraulic cylinder, to the hydraulic oil straight reciprocating motion in driving hydraulic cylinder；Base 1 is to support
Hydraulic cylinder；Connect helical spring 18 between principal mass 12 and base 1 and helical spring 18 is several, it is circumferential along principal mass 12
Even arrangement；Hydraulic cylinder is single-piston rod-type single-action hydraulic cylinder.
In the present embodiment, hydraulic cylinder includes cylinder barrel 2, piston 8, piston rod and cylinder cap 10, one end and the welding ripple of cylinder barrel 2
The other end connection of stricture of vagina pipe 4, cylinder cap 10 is located at the other end of cylinder barrel 2, to seal cylinder barrel 2；Gas outlet is machined with cylinder cap 10,
A venting plug 15 is set on gas outlet；O-ring seal 9 is provided between the inwall of piston 8 and cylinder barrel 2；One end of piston rod connects with piston 8
Connect, the other end is connected through cylinder cap 10 with principal mass 12；Gap coordinates and adds between them between piston rod and cylinder cap 10
Dust-proof seal ring 11.In cylinder barrel 2, oil pocket, the other end and cylinder cap of piston 8 are formed between one end of piston 8 and welding bellows 4
It is air between 10.
In the present embodiment, the other end of welding bellows 4 is provided with flange, and between one end of cylinder barrel 2 and flange one is provided with
Axial sealing ring 6, with oil-leakage-prevention.
In the present embodiment, isolation mounting includes the mating surface of one end of split blade type end cap 3, split blade type end cap 3 and cylinder barrel 2
On be threaded hole, split blade type end cap 3 and cylinder barrel 2 is fixedly connected by screw 24 and split blade type end cap 3 is pasted completely with flange
Close.
In the present embodiment, hole is threaded in one end of cylinder barrel 2 and the mating surface of base 1, cylinder barrel 2 and base 1 are logical
Cross screw 22 to be fixedly connected；The central through hole of base 1 with diameter greater than split blade type end cap 3 external diameter, and less than the external diameter of cylinder barrel 2,
The height of base 1 is more than the length of welding bellows 4 and the impulse stroke sum of sprung mass 5.
In the present embodiment, isolation mounting includes baffle plate 13, and the other end of piston rod is machined with positioning shaft shoulder, principal mass 12
Between baffle plate 13 and positioning shaft shoulder, baffle plate 13, principal mass 12 are fixedly connected with positioning shaft shoulder by screw 14.
In the present embodiment, piston 8 and piston rod are integrated.
In the present embodiment, the inside of the bottom of cylinder barrel 2 is in arc transition, for reducing fluid damping；The bottom of cylinder barrel 2 adds
Work has oil-in 21, oil-out 7 and pressure-regulating valve 23, and oil-in 21 and oil-out 7 are one-way valve structures, prevent oil from falling
Stream；Oil-in 21 is connected with hydraulic control system, and pressure-regulating valve 23 is used for adjusting the static balance pressure in hydraulic cylinder, fuel-displaced
The critical pressure of mouth 7 is set to the twice of internal oil pressure during static balance.
In the present embodiment, the quality of sprung mass 5 is adjustable.
In the present embodiment, the two ends of helical spring 18 are connected respectively by a spring housing with principal mass 12, base 1；Bottom
Seat 1 is fixedly connected with spring housing 19 by bolt 20, and principal mass 12 is fixedly connected with spring housing 17 by screw 16；Helical spring
18 are screwed on spring housing.
During assembling：
Sprung mass 5 is split blade type, and by bolt the bottom of welding bellows 4 is fixed in, and sprung mass 5 can basis
Isolation frequency selects piece number, and nut screwing clamping is then used again.
Welding bellows 4 is fixed on the cylinder barrel 2 of hydraulic cylinder by split blade type end cap 3, and is carried out by axial sealing ring 6
Sealing, the cavity being made up of welding bellows 4 and cylinder barrel 2 is oil pocket.
It is that gap coordinates and sealed with O-ring seal 9 between cylinder barrel 2 and piston 8, cylinder cap 10 is threadedly coupled with cylinder barrel 2, cylinder
Cylinder 2 is fixed on base 1 by screw 22.
The bolt 20 of spring housing 19 is fixed on base 1, and helical spring 18 is screwed on spring housing 19, and spring housing 19 is screwed into spiral shell
In rotation spring 18, the quantity of helical spring 18 and spring housing 19 is several.
The screwed hole of the alignment springs of principal mass 12 set 17, spring housing 17 is fixed on principal mass 12 by screw 16；Parenchyma
Amount 12 is fixed on the piston rod by screw 16, baffle plate 13 and positioning shaft shoulder.
During work：
The cylinder barrel 2 of hydraulic cylinder is connected with welding bellows 4 by screw 24, is bolted with base 1, integral type
Piston 8 and piston rod are coaxial with the cylinder barrel 2 of hydraulic cylinder and for gap cooperation, and the other end of piston rod is threaded hole and positioning
The shaft shoulder, by one-piece piston 8 and piston rod, the cylinder barrel 2 of hydraulic cylinder, welding bellows 4 sap cavity is constituted, and is constituted power antiresonance and is put
Great institutions, are fixed principal mass 12 on the piston rod by screw 14 and baffle plate 13, and principal mass 12 is welded on thrust disc, i.e., by
The oar axle composition quality elements of principal mass 12 and submarine, helical spring 18 is separately fixed at principal mass 12 by spring housing 17 and 19
On base 1, helical spring 18 and thrust block pad parallel connection collectively constitute rigidity element, and base 1 is fixed on submarine pedestal.Work as spiral shell
When rotation oar passes through unstable wake flow, perturbed force will be delivered to thrust disc by submarine shafting, and thrust disc drives principal mass 12
Vibrate together, a vibration part for principal mass 12 is acted on base 1 and pedestal by helical spring 18, and another part passes through
The inertia force that sprung mass 5 amplifies is also passed to submarine pedestal by the piston rod and piston 8 of integral type using enlarger, is being set
The two power opposite in phase equal in magnitude at meter frequency so that the power being delivered on pedestal is zero can to realize vibration isolation.
Compared with prior art, the hydraulic power anti-resonance vibration isolating device that the present invention is provided easily realizes big lever
Than simple structure, main spring rigidity value easily determines, the spring rate linearity is good, Parameter adjustable, easy accessibility.It is excellent by parameter
Change, can farthest reduce the resonance peak at given frequency of controlled system, result of the test shows, the fluid pressure type is moved
Power antiresonance structure can longitudinal line spectrum vibration of shaft reduce 5dB, and the characteristics of with good stability.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
1. a kind of hydraulic power anti-resonance vibration isolating device, it is characterised in that：Including hydraulic cylinder, welding bellows, principal mass, bottom
Seat, helical spring and sprung mass, the welding bellows, principal mass, base, sprung mass and hydraulic cylinder are coaxially disposed；Institute
One end sealing for stating welding bellows arranges a sprung mass, and the other end of the welding bellows is connected with the hydraulic cylinder；
The principal mass is connected with the hydraulic cylinder, to drive the hydraulic oil straight reciprocating motion in the hydraulic cylinder；The base
To support the hydraulic cylinder；If connecting the helical spring between the principal mass and the base and the helical spring being
Dry, it is arranged circumferentially along the principal mass；The hydraulic cylinder is single-piston rod-type single-action hydraulic cylinder.
2. a kind of hydraulic power anti-resonance vibration isolating device according to claim 1, it is characterised in that：The hydraulic cylinder bag
Cylinder barrel, piston, piston rod and cylinder cap are included, one end of the cylinder barrel connects with the other end of the welding bellows, the cylinder cap
Located at the other end of the cylinder barrel, to seal the cylinder barrel；The piston coordinates with the inwall gap of the cylinder barrel, to drive
The hydraulic oil moved in the cylinder barrel does straight reciprocating motion；One end of the piston rod is connected with the piston, and the other end runs through
The cylinder cap is connected with the principal mass.
3. a kind of hydraulic power anti-resonance vibration isolating device according to claim 2, it is characterised in that：The welding ripple
The other end of pipe is provided with flange, and an axial sealing ring is provided between one end of the cylinder barrel and the flange.
4. a kind of hydraulic power anti-resonance vibration isolating device according to claim 3, it is characterised in that：Including split blade type end
Lid, the split blade type end cap is fixed on the end face of one end of the cylinder barrel and fits completely with the flange.
5. a kind of hydraulic power anti-resonance vibration isolating device according to claim 4, it is characterised in that：The one of the cylinder barrel
End is fixedly connected with the base end face；The central through hole of the base with diameter greater than the split blade type end cap external diameter, it is and little
In the external diameter of the cylinder barrel, the height of the base is more than the length of the welding bellows and the working line of the sprung mass
Journey sum.
6. a kind of hydraulic power anti-resonance vibration isolating device according to claim 2, it is characterised in that：Including baffle plate, institute
The other end for stating piston rod is machined with positioning shaft shoulder, and the principal mass is located between the baffle plate and the positioning shaft shoulder, described
Baffle plate, principal mass are fixedly connected with positioning shaft shoulder by screw.
7. a kind of hydraulic power anti-resonance vibration isolating device according to claim 2, it is characterised in that：The piston and institute
State what piston rod was integrated.
8. a kind of hydraulic power anti-resonance vibration isolating device according to claim 2, it is characterised in that：The bottom of the cylinder barrel
Portion is provided with oil-in, oil-out and pressure-regulating valve, and the oil-in and oil-out are one-way valve structures, the oil-in
It is connected with hydraulic control system, the pressure-regulating valve is used for adjusting the static balance pressure in the hydraulic cylinder, described fuel-displaced
The critical pressure of mouth is set to the twice of internal oil pressure during static balance.
9. a kind of hydraulic power anti-resonance vibration isolating device according to claim 1, it is characterised in that：The sprung mass
Quality it is adjustable.
10. a kind of hydraulic power anti-resonance vibration isolating device according to claim 1, it is characterised in that：The spiral bullet
The two ends of spring are connected respectively by a spring housing with the principal mass, base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611118153.1A CN106594162A (en) | 2016-12-07 | 2016-12-07 | Hydraulic power antiresonance isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611118153.1A CN106594162A (en) | 2016-12-07 | 2016-12-07 | Hydraulic power antiresonance isolation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106594162A true CN106594162A (en) | 2017-04-26 |
Family
ID=58597370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611118153.1A Pending CN106594162A (en) | 2016-12-07 | 2016-12-07 | Hydraulic power antiresonance isolation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106594162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654566A (en) * | 2017-08-07 | 2018-02-02 | 上海交通大学 | The liquid bullet formula isolation mounting of Parameter adjustable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400389A (en) * | 1971-06-23 | 1975-07-16 | Ass Elect Ind | Arrangements for supporting a mass with vibration isolation |
| DE2525333A1 (en) * | 1975-06-06 | 1976-12-16 | Arpad Dipl Ing Dr Bardocz | Damped and resilient vibration isolator - has metallic spring in pliable air bellows with opening to atmosphere in end cap |
| EP0993904A2 (en) * | 1998-10-16 | 2000-04-19 | HEKUMA Herbst Maschinenbau GmbH | Linear drive |
| CN102384201A (en) * | 2010-09-06 | 2012-03-21 | 东洋橡胶工业株式会社 | Air spring |
| CN104838165A (en) * | 2012-10-18 | 2015-08-12 | 拉蒂尔菲雅克公司 | Device for assisting the operation of an aircraft door |
| CN105240452A (en) * | 2015-09-29 | 2016-01-13 | 北京控制工程研究所 | Local bearing type active vibration isolation device capable of being applied to ultrahigh vacuum system |
-
2016
- 2016-12-07 CN CN201611118153.1A patent/CN106594162A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400389A (en) * | 1971-06-23 | 1975-07-16 | Ass Elect Ind | Arrangements for supporting a mass with vibration isolation |
| DE2525333A1 (en) * | 1975-06-06 | 1976-12-16 | Arpad Dipl Ing Dr Bardocz | Damped and resilient vibration isolator - has metallic spring in pliable air bellows with opening to atmosphere in end cap |
| EP0993904A2 (en) * | 1998-10-16 | 2000-04-19 | HEKUMA Herbst Maschinenbau GmbH | Linear drive |
| CN102384201A (en) * | 2010-09-06 | 2012-03-21 | 东洋橡胶工业株式会社 | Air spring |
| CN104838165A (en) * | 2012-10-18 | 2015-08-12 | 拉蒂尔菲雅克公司 | Device for assisting the operation of an aircraft door |
| CN105240452A (en) * | 2015-09-29 | 2016-01-13 | 北京控制工程研究所 | Local bearing type active vibration isolation device capable of being applied to ultrahigh vacuum system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654566A (en) * | 2017-08-07 | 2018-02-02 | 上海交通大学 | The liquid bullet formula isolation mounting of Parameter adjustable |
| CN107654566B (en) * | 2017-08-07 | 2019-10-08 | 上海交通大学 | The liquid bullet formula isolation mounting of Parameter adjustable |
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