CN105508490B - Staged anti-impact damper - Google Patents
Staged anti-impact damper Download PDFInfo
- Publication number
- CN105508490B CN105508490B CN201510950551.9A CN201510950551A CN105508490B CN 105508490 B CN105508490 B CN 105508490B CN 201510950551 A CN201510950551 A CN 201510950551A CN 105508490 B CN105508490 B CN 105508490B
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- CN
- China
- Prior art keywords
- piston
- throttle orifice
- impact damper
- elastic bag
- damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of staged anti-impact damper, including housing and piston, damping fluid is full of in housing；Piston is provided with least one pair of throttle orifice penetrated along piston thickness direction, and each orifice-built-in has check valve；In each pair throttle orifice, the check valve in one of throttle orifice is opposite with the damping fluid flow direction that the check valve in another throttle orifice is allowed；The lower surface of piston is connected with elastic bag；Elastic bag is provided with the hole penetrated along elastic bag thickness direction in the position corresponding with least one pair of above-mentioned throttle orifice.Using the damper of the present invention, energy absorbing efficiency is high, can avoid secondary pulse when big load is impacted.There are damping fluid and gas inside damper, by flowing consumed energy of the sticky fluid in cylinder, metal strike will not also occur greatly again even if impact energy, avoid equipment impact acceleration excessive.
Description
Technical field
The present invention relates to plant equipment, more particularly to a kind of staged anti-impact damper.
Background technology
Present vibration isolation anti-impact peculiar to vessel relies primarily on rubber shock absorber and limiter combination, to realize vibration isolation and equipment buffering.
Rubber shock absorber advantage is to isolate low-frequency vibration, but it is limited to face energy-absorbing effect during severe impact, and Impact direction changes
Easily occurs the tear failure of vibration isolator during change.And when impact strength is larger, limiter limit element can cause secondary pulse
Problem, cause equipment local acceleration increased dramatically, device damage can be caused.
Existing hydraulic damper is connected directly between under-chassis and pedestal.When vibration equipment frequency is higher, due to speed
Degree is fast, displacement is small, and damper piston has little time to move, and damps equivalent to rigidity, directly transfers vibrations to pedestal, vibration isolation is made
Into serious influence.In order to mitigate the influence to vibration isolating effect, isolate between equipment under-chassis and damper by elastomeric pad, pad
Energy-absorbing function blocked up and that damper can be influenceed.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of curve of output of damper with piston movement displacement
The staged anti-impact damper being stepped.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme：
A kind of staged anti-impact damper, including housing and piston, housing is interior to be full of damping fluid；Its feature is：Piston
Provided with the throttle orifice that at least one pair of is penetrated along piston thickness direction, each orifice-built-in has check valve；In each pair throttle orifice, its
In check valve in a throttle orifice it is opposite with the damping fluid flow direction that the check valve in another throttle orifice is allowed；Piston
Lower surface be connected with elastic bag；Elastic bag is provided with along elastic gas in the position corresponding with least one pair of above-mentioned throttle orifice
The hole of capsule thickness direction insertion.
The staged anti-impact damper of the present invention has advantages below and feature as a result of above technical scheme：
1）The staged anti-impact damper of the present invention can be used for the defense of resistance to impact of marine main engine vibrating isolation system, with vibration isolation
Device is installed and used together.The lower end connection hull pedestal of staged anti-impact damper, the middle raft body of upper end connection or main frame machine
Pin.Because the output of damper with piston movement displacement curve is stairstepping, main frame is usually run, and isolation mounting vibration, is driven
Damper piston thin tail sheep moves, and piston compressing gasbag, damping force will not be produced, when significantly moving（Impacted）, damping fluid
Internally flow, now just strong effect.This damper can avoid influenceing the vibration isolating effect of isolation mounting, realize impact again
Protective action；
2）Compared to rubber shock absorber, limiter, damper of the invention has the function that energy-absorbing, power consumption, can reduce and set
Standby shock response.The damper of the present invention can play buffering energy-absorbing function when equipment is by shock loading, more effective anti-
Only vibration isolator tension is destroyed, and effectively improves the impact resistance of equipment；
3）The damper energy absorbing efficiency of the present invention is high, can avoid secondary pulse when big load is impacted.Inside damper
There are fluid and gas, by flowing consumed energy of the sticky fluid in cylinder, metal will not also occur greatly again even if impact energy
Hit, avoid equipment impact acceleration excessive.
Brief description of the drawings
Fig. 1 is the structural representation of staged anti-impact damper according to an embodiment of the invention.
Fig. 2 is the overlooking the structure diagram of air bag according to an embodiment of the invention.
Fig. 3 is that the damper of staged anti-impact damper according to an embodiment of the invention is contributed with piston movement displacement
The schematic diagram of curve.
Embodiment
Referring to Fig. 1 and Fig. 2.Staged anti-impact damper according to an embodiment of the invention, including housing 1, piston 2, with
And the piston rod 8 being connected with piston 2, housing is interior to be full of damping fluid 3.Piston 2 is provided with least one pair of and penetrated along the thickness direction of piston 2
Throttle orifice 21, each orifice-built-in has check valve 5.In each pair throttle orifice, check valve in one of throttle orifice with it is another
The damping fluid flow direction that check valve in one throttle orifice is allowed is on the contrary, the check valve in i.e. one of throttle orifice is only permitted
Perhaps the damping fluid above piston in cavity is flowed by throttle orifice into cavity below piston, and unidirectional in another throttle orifice
Valve only allows the damping fluid below piston in cavity to be flowed by throttle orifice into cavity above piston.Implementation shown in the figure
In example, the quantity of throttle orifice 21 is two pairs.
The lower surface of piston 2 is connected with elastic bag 4, and the inside of elastic bag 4 has air compressible in size.Elasticity
Air bag 4 is provided with the hole 41 penetrated along elastic bag thickness direction in the position corresponding with least one pair of above-mentioned throttle orifice 21, uses
Think that damping fluid passage is reserved in throttling piston hole.Preferably, 4 structure in disk form of elastic bag, and cover comprehensively under piston
Surface, elastic bag 4 can be for example connected by bolt with piston lower surface.The thickness of elastic bag 4 is 3-4mm.
In the embodiments illustrated in the figures, housing 1 is double-decker, forms inner chamber 11 and exocoel 12, and piston 2 is arranged on interior
In chamber 11, inner chamber is workspace, and exocoel is damping fluid compensated chamber.Housing 1 in invention can also use single layer structure（It is not shown
Out）.
When housing 1 is using double-decker, adjustment pin 6 can also be set, adjustment pin 6 is connected with the outer wall thread of housing,
Adjustment hole 13, the tapered body in front end of adjustment pin are correspondingly provided with the cavity wall of inner chamber, the bullet can be stretched into adjustment hole and will adjusted
Knothole partially or fully blocks.Preferably, return port 14 can also be provided between inner chamber and exocoel.The opening and closing degree of adjustment pin
Function with adjustment damper damping force.In the case of piston movement speed identical, adjustment pin screw-in is more, and damping force is got over
Greatly；When adjustment pin is located at identical adjustment position, piston movement speed is bigger, and damping force is bigger.
The operation principle of the present invention is that, when piston experiencing small oscillating movements, damper only has air bag Volume Changes, and damping fluid is not
It can flow, damping force will not be produced.When piston significantly moves, damping fluid passes through phase on the throttle orifice and elastic bag of piston
Corresponding hole, so as to produce damping force, kinetic energy is converted into interior energy and consumed.Fig. 3 shows according to an embodiment of the invention
The damper output F of staged anti-impact damper with piston movement displacement S curve schematic diagram.
The staged anti-impact damper of the present invention can be arranged between hull pedestal and main frame double-layer vibration isolating device raft body.By
In the effect of air bag, piston moves near equilbrium position（Main frame routine work is vibrated）All without generation damping force, i.e. main frame
Vibration will not cause damper to produce damping force, and vibration will not pass.When piston has big displacement（I.e. main frame is rushed
Hit）, damper start-up operation, damping fluid generation energy-absorbing function, buffering is provided for main frame.
The staged damper of the present invention is installed on below main frame double-layer vibration isolating device raft body, can be buffered at pedestal
Shock loading, reduce equipment shock response, and reduce equipment after impact recover stable needed for take.
Claims (6)
1. a kind of staged anti-impact damper, including housing and piston, housing is interior to be full of damping fluid；It is characterized in that：The work
Plug is provided with least one pair of throttle orifice penetrated along piston thickness direction, and each orifice-built-in has check valve；Throttled in each pair
Kong Zhong, the damping fluid flow direction phase that the check valve in one of throttle orifice is allowed with the check valve in another throttle orifice
Instead；
The lower surface of the piston is connected with elastic bag, and the elastic bag covers the lower surface of piston comprehensively；The elasticity
Air bag is provided with the hole penetrated along elastic bag thickness direction in the position corresponding with least one pair of above-mentioned throttle orifice.
2. staged anti-impact damper as claimed in claim 1, it is characterised in that：The elastic bag structure in disk form,
The thickness of the elastic bag is 3-4mm.
3. staged anti-impact damper as claimed in claim 2, it is characterised in that：The quantity of the throttle orifice is two pairs.
4. the staged anti-impact damper as any one of claims 1 to 3, it is characterised in that：The housing uses
Double-decker, forms inner chamber and exocoel, and the piston is set in the lumen.
5. staged anti-impact damper as claimed in claim 4, it is characterised in that：Also include adjustment pin, the adjustment pin and shell
The outer wall thread connection of body, is correspondingly provided with adjustment hole, the tapered body in front end of adjustment pin, the bullet can in the cavity wall of inner chamber
Stretch into the adjustment hole and partially or fully block adjustment hole.
6. staged anti-impact damper as claimed in claim 5, it is characterised in that：Backflow is provided between the inner chamber and exocoel
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950551.9A CN105508490B (en) | 2015-12-18 | 2015-12-18 | Staged anti-impact damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950551.9A CN105508490B (en) | 2015-12-18 | 2015-12-18 | Staged anti-impact damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105508490A CN105508490A (en) | 2016-04-20 |
| CN105508490B true CN105508490B (en) | 2017-12-05 |
Family
ID=55716699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510950551.9A Active CN105508490B (en) | 2015-12-18 | 2015-12-18 | Staged anti-impact damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508490B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058351A (en) * | 2018-10-15 | 2018-12-21 | 江西巨晟实业有限公司 | A kind of double buffering air-bag vibration damper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1409394A (en) * | 1964-07-16 | 1965-08-27 | Variable flow hydraulic shock absorber | |
| FR2478763A1 (en) * | 1980-03-19 | 1981-09-25 | Creusot Loire | HYDRAULIC ENERGY DISSIPATOR |
| JP2006300841A (en) * | 2005-04-22 | 2006-11-02 | Sumitomo Electric Ind Ltd | Load detector, and vehicle having load detector |
| CN201396393Y (en) * | 2009-03-19 | 2010-02-03 | 尹学军 | Spring damping vibration isolator |
| JP5426431B2 (en) * | 2009-06-30 | 2014-02-26 | 株式会社ショーワ | Hydraulic shock absorber |
| CN103883661B (en) * | 2014-03-13 | 2016-03-02 | 江苏大学 | A kind of variable vibration damper of sliding valve style damping and method of work coordinating pneumatic spring |
-
2015
- 2015-12-18 CN CN201510950551.9A patent/CN105508490B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105508490A (en) | 2016-04-20 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190118 Address after: 201108 3111 Huaning Road, Minhang District, Shanghai Patentee after: Shanghai shine Heavy Industry Co., Ltd. Address before: 201108 3111 Huaning Road, Minhang District, Shanghai Patentee before: The 711th Research Institute of China Shipbuilding Industrial Corporation(CSIC) |