CN104315067A - Liquid damping shock absorber for engineering machinery - Google Patents
Liquid damping shock absorber for engineering machinery Download PDFInfo
- Publication number
- CN104315067A CN104315067A CN201410426628.8A CN201410426628A CN104315067A CN 104315067 A CN104315067 A CN 104315067A CN 201410426628 A CN201410426628 A CN 201410426628A CN 104315067 A CN104315067 A CN 104315067A
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- CN
- China
- Prior art keywords
- inertia channel
- metal shell
- throttling
- fixedly connected
- engineering machinery
- 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
- F16F9/32—Details
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
- F16F9/3484—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of the annular discs per se, singularly or in combination
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The invention discloses a liquid damping shock absorber for engineering machinery. The liquid damping shock absorber comprises a connecting bolt, a main rubber spring, two throttling disks, a metal shell, an inertia channel, a decoupling disk, a rubber base membrane, and a connecting seat which is embedded in the upper part of the main rubber spring, wherein the main rubber spring is connected with the upper end of the metal shell; the main rubber spring and the metal shell form a closed liquid chamber; the connecting bolt is fixedly connected with the connecting seat; the throttling disks are positioned in the closed liquid chamber and fixedly connected with one end of the connecting bolt; the inertia channel is fixedly connected with the inner wall of the metal shell and positioned below the throttling disks; the decoupling disk is positioned in the inertia channel; the rubber base membrane is fixedly connected with the inner wall of the metal shell and positioned below the inertia channel. The shock absorber is used for isolating vibration and lowering noise of the engineering machinery, in particular for isolating mechanical vibration within wider broadband and reducing large amplitude shaking at low frequency.
Description
Technical field
The present invention relates to a kind of vibration damper, specifically, relate to a kind of fluid damper for engineering machinery.
Background technique
The vibration isolator of engineering machinery is the vibration passing to vehicle frame for isolating power assembly, to improve the riding comfort of driver; Reduce and answer bottom surface uneven, the vehicle frame violent oscillatory motion that emergency braking etc. cause is on the impact of power assembly, and protection power assembly each several part part extends its working life, reduces costs; Isolation or the operator cabin reduced because ground injustice or emergency braking cause rock, and improve the riding comfort of driver.
In prior art, the vibration isolation of engineering machinery adopts rubber shock absorber usually, utilizes the hysteretic characteristic of rubber, realizes the isolation to vibration.But for significantly flicker effect is very poor, service behaviour and the life-span of each component of motor and complete machine can be affected, and greatly affect the riding comfort of driver, reduce working efficiency.
Summary of the invention
technical problem:technical problem to be solved by this invention is: provide a kind of fluid damper for engineering machinery, this vibration damper is used for separating vibration, the reduction noise device of engineering machinery, especially can isolate in wider frequency territory the vibration of machinery and alleviate rocking of low frequency large amplitude.
technological scheme:for solving the problems of the technologies described above, technological scheme provided by the invention is as follows:
A kind of fluid damper for engineering machinery, this vibration damper comprises connecting bolt, rubber spring, two throttling plates, metal shell, inertia channel, decoupling zero dish, rubber counterdie, is embedded to connecting base on rubber spring top, rubber spring is connected to the upper end of metal shell, and rubber spring and metal shell form airtight liquid chamber; Connecting bolt is fixedly connected on connecting base, and throttling plate is arranged in airtight liquid chamber, and throttling plate is fixedly connected on connecting bolt one end; Inertia channel is fixedly connected on the inwall of metal shell, and inertia channel is positioned at below throttling plate, and decoupling zero dish is arranged in inertia channel; Rubber counterdie is fixedly connected on the inwall of metal shell, and rubber counterdie is positioned at below inertia channel.
Further, two described throttling plates are the upper throttling plate and lower throttling plate longitudinally laid, the distance of the distance on upper throttling plate and airtight liquid chamber top, upper throttling plate and lower throttling plate, and the distance of lower throttling plate and inertia channel is all equal.
Further, raise up in the middle part of described decoupling zero dish, decoupling zero dish is streamlined.
Further, the inwall of described inertia channel in the shape of a spiral.
beneficial effect:compared with prior art, technological scheme of the present invention has following beneficial effect:
(1) effective vibration isolation frequency range of vibration damper is widened.Double-deck two throttling plates of the present invention, turbulent effect is increased further compared to individual layer throttling plate, improve energy loss, thus effectively suppress the resonance response of inertia liquid note, reduce the age hardening effect of vibration isolator, and by increasing upper liquid chamber rigidity to improve minimum secondary hardening post-curing frequency, to widen effective vibration isolation frequency range of vibration damper.
(2) the streamlined decoupling zero dish of intermediate projections, relative to common plate inertia channel, because rigidity improves, not yielding under large vibration, to increase the service life.Meanwhile, streamlined decoupling zero dish reduces high frequency rigidity and damping, can separating vibration better.
(3) inertia channel of helical inwall, compares common inertia channel, increases the linear loss of fluid flow path, suppresses to rock to strengthen damping, and plays guide functions to liquid and make it flow steadily.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention.
Have in figure: connecting bolt 1, rubber spring 2, throttling plate 3, metal shell 4, inertia channel 5, decoupling zero dish 6, rubber counterdie 7, silicone oil 8, connecting base 9, first segment flow table room 10, second section flow table room 11, upper liquid chamber 12, lower liquid chamber 13.
embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described in further detail.
As shown in Figure 1, a kind of fluid damper for engineering machinery, comprises connecting bolt 1, rubber spring 2, two throttling plates 3, metal shell 4, inertia channel 5, decoupling zero dish 6, rubber counterdie 7, is embedded to connecting base 9 on rubber spring 2 top.Rubber spring 2 is connected to the upper end of metal shell 4, and rubber spring 2 and metal shell 4 form airtight liquid chamber.Connecting bolt 1 is fixedly connected on connecting base 9, and throttling plate 3 is arranged in airtight liquid chamber, and throttling plate 3 is fixedly connected on connecting bolt 1 one end.Inertia channel 5 is fixedly connected on the inwall of metal shell 4, and inertia channel 5 is positioned at below throttling plate 3, and decoupling zero dish 6 is arranged in inertia channel 5.Rubber counterdie 7 is fixedly connected on the inwall of metal shell 4, and rubber counterdie 7 is positioned at below inertia channel 5.
The vibration damper of said structure, two throttling plates 3 are upper throttling plate and lower throttling plate.Rubber spring 2 and metal shell 4 are formed in airtight liquid chamber, the space on upper throttling plate top is first segment flow table room 10, space between upper throttling plate and lower throttling plate is second section flow table room 11, space between lower throttling plate and inertia channel 5 is upper liquid chamber 12, and the space between inertia channel 5 and rubber counterdie 7 is lower liquid chamber 13.
When using the vibration damper of said structure, be fixed on vehicle frame by metal shell 4, connect by isolation mounting with chain connecting bolt, rubber spring 2 supports by isolation mounting weight.Splendid attire damping liquid in vibration damper, such as silicone oil 8.What cause when vehicle travels on the road surface of injustice or emergency braking significantly rocks, and decoupling zero dish 6 moves to limit position, and silicone oil 8 is flowed between upper liquid chamber 12 and lower liquid chamber 13 by inertia channel 5.Now, vibration damper provides large damping large rigidity to suppress rocking of low frequency.When vehicle is when normally working, i.e. the high frequency small amplitude motion that causes of the energizing frequency of motor, the free vibration of streamlined decoupling zero dish 6, damping liquid free-flow between upper liquid chamber 12 and lower liquid chamber 13, without the need to flowing through inertia channel 5.Now, vibration damper provides little rigidity little damping, the vibration of isolation high frequency, but can cause upper liquid chamber 12 and the resonance of lower liquid chamber 13 liquid note because of the increase of degrees of freedom.Therefore, by upper and lower two throttling plates 3, improve the minimum secondary hardening post-curing frequency of structure, and the action of turbulent flow utilizing it to cause increases quadratic nonlinearity liquid damping, reduce the rigidity of secondary hardening post-curing, widen its vibration isolation frequency range.
Further, described two throttling plates 3 are the upper throttling plate and lower throttling plate longitudinally laid, the distance of the distance on upper throttling plate and airtight liquid chamber top, upper throttling plate and lower throttling plate, and the distance of lower throttling plate and inertia channel 5 is all equal.The cavity on inertia channel 5 top is longitudinally divided into trisection by two throttling plates 3, being the resonant frequency in order to improve inertia fluid column as far as possible, namely improving the minimum secondary hardening post-curing rigidity of silicon oil damper to greatest extent to widen vibration isolation frequency range to greatest extent.
Further, raise up in the middle part of described decoupling zero dish 6, decoupling zero dish 6 is in streamlined.Fairshaped decoupling zero dish 6 can increase rigidity, extends its working life.
Further, the inwall of described inertia channel 5 in the shape of a spiral.The inwall of inertia channel 5 is set to helical, the linear loss of fluid flow path can be increased, suppress to rock to strengthen damping, and guide functions is risen to liquid make it flow steadily.What cause when vehicle travels on the road surface of injustice or emergency braking significantly rocks, and silicone oil 8, by spiral inwall inertia channel, flows, and produces large damping large rigidity to suppress rocking of low frequency between upper liquid chamber 12 and lower liquid chamber 13.
Vibration damper of the present invention be for engineering machinery separating vibration, reduce the isolation mounting of noise.Rubber spring 2 in vibration damper supports by isolation mounting weight, helical inner wall type inertia channel 5 for providing large damping under low frequency large amplitude excitation, streamlined decoupling zero dish 6 is for reducing high frequency rigidity and damping, and double-deck two throttling plates 3 are for improving dynamic stiffness secondary hardening post-curing low-limit frequency under high frequency pumping.Inertia channel 5 increases the linear loss of fluid flow path by spiral lines, with strengthen damping suppress to rock with, and guide functions is played to liquid, makes it flow steadily.Decoupling zero dish 6, in streamlined, contribute to improving himself rigidity and meets fluid motion principle and extend itself life-span, reduces high frequency rigidity and damping simultaneously, so that separating vibration better.Throttling plate 3 is double-deck, can increase turbulent effect and improve energy loss, thus effectively suppress the resonance effect of inertia liquid note.
The foregoing is only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; in every case those of ordinary skill in the art modify or change according to the equivalence that disclosed content is done, and all should include in the protection domain recorded in claims.
Claims (4)
1. the fluid damper for engineering machinery, it is characterized in that: this vibration damper comprises connecting bolt (1), rubber spring (2), two throttling plates (3), metal shell (4), inertia channel (5), decoupling zero dish (6), rubber counterdie (7), is embedded to connecting base (9) on rubber spring (2) top, rubber spring (2) is connected to the upper end of metal shell (4), and rubber spring (2) and metal shell (4) form airtight liquid chamber; Connecting bolt (1) is fixedly connected on connecting base (9), and throttling plate (3) is arranged in airtight liquid chamber, and throttling plate (3) is fixedly connected on connecting bolt (1) one end; Inertia channel (5) is fixedly connected on the inwall of metal shell (4), and inertia channel (5) is positioned at throttling plate (3) below, and decoupling zero dish (6) is arranged in inertia channel (5); Rubber counterdie (7) is fixedly connected on the inwall of metal shell (4), and rubber counterdie (7) is positioned at inertia channel (5) below.
2. the fluid damper for engineering machinery according to claim 1, it is characterized in that: two described throttling plates (3) are the upper throttling plate and lower throttling plate longitudinally laid, the distance of the distance on upper throttling plate and airtight liquid chamber top, upper throttling plate and lower throttling plate, and the distance of lower throttling plate and inertia channel (5) is all equal.
3. the fluid damper for engineering machinery according to claim 1, is characterized in that: described decoupling zero dish (6) middle part raises up, and decoupling zero dish (6) is in streamlined.
4. the fluid damper for engineering machinery according to claim 1, is characterized in that: the inwall of described inertia channel (5) in the shape of a spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410426628.8A CN104315067B (en) | 2014-08-27 | 2014-08-27 | A kind of fluid damper for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410426628.8A CN104315067B (en) | 2014-08-27 | 2014-08-27 | A kind of fluid damper for engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104315067A true CN104315067A (en) | 2015-01-28 |
| CN104315067B CN104315067B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410426628.8A Active CN104315067B (en) | 2014-08-27 | 2014-08-27 | A kind of fluid damper for engineering machinery |
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| Country | Link |
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| CN (1) | CN104315067B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246798A (en) * | 2016-08-24 | 2016-12-21 | 河海大学常州校区 | A kind of automobile engine Hydraulic Engine Mount with three liquid chamber structures |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163162A2 (en) * | 1984-05-24 | 1985-12-04 | METZELER Gesellschaft mit beschränkter Haftung | Two-chamber engine mounting with hydraulic damping |
| US4679776A (en) * | 1984-05-16 | 1987-07-14 | Diehl Gmbh & Co. | Elastic rubber bearing with hydraulic damping |
| US5853063A (en) * | 1995-07-27 | 1998-12-29 | Lemforder Metallwaren Ag | Engine mount for motor vehicles |
| CN101670776A (en) * | 2009-09-25 | 2010-03-17 | 宁波拓普减震***股份有限公司 | Semiactive suspending device with electromagnetic valve |
| CN202371077U (en) * | 2011-12-29 | 2012-08-08 | 上海骆氏减震件有限公司 | Magnetorheological hydraulic suspension |
| CN102806835A (en) * | 2012-08-16 | 2012-12-05 | 宁波拓普集团股份有限公司 | Hydraulic power train mount with throttle disc |
-
2014
- 2014-08-27 CN CN201410426628.8A patent/CN104315067B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679776A (en) * | 1984-05-16 | 1987-07-14 | Diehl Gmbh & Co. | Elastic rubber bearing with hydraulic damping |
| EP0163162A2 (en) * | 1984-05-24 | 1985-12-04 | METZELER Gesellschaft mit beschränkter Haftung | Two-chamber engine mounting with hydraulic damping |
| US5853063A (en) * | 1995-07-27 | 1998-12-29 | Lemforder Metallwaren Ag | Engine mount for motor vehicles |
| CN101670776A (en) * | 2009-09-25 | 2010-03-17 | 宁波拓普减震***股份有限公司 | Semiactive suspending device with electromagnetic valve |
| CN202371077U (en) * | 2011-12-29 | 2012-08-08 | 上海骆氏减震件有限公司 | Magnetorheological hydraulic suspension |
| CN102806835A (en) * | 2012-08-16 | 2012-12-05 | 宁波拓普集团股份有限公司 | Hydraulic power train mount with throttle disc |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246798A (en) * | 2016-08-24 | 2016-12-21 | 河海大学常州校区 | A kind of automobile engine Hydraulic Engine Mount with three liquid chamber structures |
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| Publication number | Publication date |
|---|---|
| CN104315067B (en) | 2016-08-31 |
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| CB03 | Change of inventor or designer information |
Inventor after: Lu Xi Inventor after: Wu Dan Inventor after: Zhang Jianrun Inventor after: Sun Beibei Inventor after: Lei Jingjing Inventor before: Lu Xi Inventor before: Lei Jingjing Inventor before: Zhang Jianrun Inventor before: Sun Beibei |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |