CN104500642B - A kind of permanent magnet hydraulic buffer - Google Patents
A kind of permanent magnet hydraulic buffer Download PDFInfo
- Publication number
- CN104500642B CN104500642B CN201410684607.6A CN201410684607A CN104500642B CN 104500642 B CN104500642 B CN 104500642B CN 201410684607 A CN201410684607 A CN 201410684607A CN 104500642 B CN104500642 B CN 104500642B
- Authority
- CN
- China
- Prior art keywords
- permanent magnets
- kinematic link
- buffering
- buffer
- sealing
- 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.)
- Expired - Fee Related
Links
- 239000000872 buffer Substances 0.000 title claims abstract description 46
- 230000003139 buffering effect Effects 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 7
- 238000013016 damping Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
Abstract
Permanent magnet hydraulic buffer of the invention, including the kinematic link for being connected with switch lever, kinematic link is oriented to along its axis direction and is slidedly assemblied on the sealing buffering cavity for extending up and down, seal cavity is built with buffering oil, the ullage for buffering oil has sealed air-space, there are two or more permanent magnets in slidable fit in sealing cushion chamber body on kinematic link, thrust coordinates the permanent magnets of the top in an upward direction with kinematic link, the permanent magnets of bottom buffer the lower end thrust cooperation in a downward direction of cavity with sealing, the like pole of two neighboring permanent magnets is oppositely arranged and makes to produce repulsion between two neighboring permanent magnets.Buffer of the invention is simultaneously using magnetic buffering and buffering oil buffering, avoid the generation mechanical shock during buffer-braking and cause damage parts, while the initial buffer power of the buffer is smaller, do not result in the bounce-back of kinematic link, possesses excellent shock-absorbing capacity, service life is more long.
Description
Technical field
The present invention relates to buffer unit, more particularly to a kind of permanent magnet hydraulic buffer.
Background technology
With developing rapidly for HVDC power transmission and transformation, high voltage DC breaker is widely used, wherein, high pressure
Breaker operation mechanism is available to the power source of killer switch pull bar divide-shut brake, the actuating in switch lever quick divide-shut brake
Cushioning effect is played in the motion of buffer unit in mechanism to switch lever, prevents switch lever beyond movement travel and other structures
Part collides and causes to damage.Particularly in switch lever movement velocity operating mode higher, buffer plays vital
Effect.
Existing buffer mainly has various, mainly has mechanical spring buffer, oil buffering and magnetic buffering, using these three
The buffer unit of buffering method all there are certain defect, and for oily buffer unit, the damping characteristics of oil bumper are not square
Just regulation, starting buffering it is really up to the mark, be easily caused motion bounce-back it is excessive, cause mechanical life to reduce, buffering effect is limited；Just
For magnetic buffer device, magnetic buffer device is used for that cushion stroke is more long, the buffer system of speed, in cushion stroke
When shorter, speed is slower, electric energy has larger waste when magnetic energy is converted into, simultaneously as the magnetic resistance of air is larger, two
Magnetic patch it is closer to the distance when the repulsion that interacts it is just obvious, when distant, the buffering effect for playing is just very limited,
Buffering effect is bad, for spring buffer, the limited mechanical properties of spring, and shock-absorbing capacity has after using certain hour
Limit, does not often reach buffer requirements.
The content of the invention
It is an object of the invention to provide a kind of while using magnetic buffering and the permanent magnet hydraulic buffer of oil buffering, being used to
Solve the problems, such as that the buffer buffering effect in the prior art individually using oil buffering or magnetic buffering is bad.
Permanent magnet hydraulic buffer of the invention is adopted the following technical scheme that：A kind of permanent magnet hydraulic buffer, including for
The kinematic link of switch lever drive connection, kinematic link has initial station and stress when not stressing to moving down in the axial direction
Move to the buffer station of highest distance position, the kinematic link is slidedly assemblied in the sealing for extending up and down along its axis direction guiding and delays
Rush on cavity, equipped with buffering oil in the sealing cushion chamber body, buffering the ullage of oil has sealed air-space, and the transmission connects
There are two or more permanent magnets in slidable fit in sealing cushion chamber body on bar, the permanent magnets and kinematic link of the top are upward
Thrust coordinates on direction, and thrust coordinates the permanent magnets of bottom in a downward direction with the lower end of sealing buffering cavity, adjacent
The like pole of two permanent magnets is oppositely arranged and makes to produce repulsion between two neighboring permanent magnets, in initial station, there is two
Individual above permanent magnets are located in sealed air-space, and in buffer station, permanent magnets can be completely immersed in buffering oil.
The kinematic link is provided with outer convex edge, and kinematic link is matched somebody with somebody by outer convex edge with the permanent magnets thrust block of the top
Close.
The sealing buffering cavity is by hollow bushing and the upper and lower end cover for being sealedly connected on hollow bushing upper and lower ends
Composition, the upper and lower end cover is provided with the pilot hole passed through for kinematic link, and the permanent magnets top pressure of bottom is in lower sealing
End cap upper surface coordinates with lower end cover block.
The lower end cover and hollow bushing connection adjustable in the axial direction.
The hollow bushing is the up-small and down-big reducing hollow pipe of radial dimension, and the lower end cover is adjustable to be connected to sky
The big footpath section in lower end of heart sleeve pipe.
On permanent magnet hydraulic buffer kinematic link of the invention adjacent permanent magnets due to two adjacent face magnetic poles it is relative,
Therefore two adjacent permanent magnets are repelled each other and are suspended in other permanent magnets topmost and between the permanent magnets of bottom respectively
In sealing cushion chamber body and can be on kinematic link slidably, when kinematic link stress is moved down, the permanent magnetism of the top
Block is moved downward, and the distance between permanent magnets are sequentially reduced, repulsion gradually increases, and the resistance of motion to kinematic link just gradually becomes
Greatly, so as to play preferable cushioning effect, simultaneously as being filled in forever equipped with buffering oil, and buffering oil in sealing cushion chamber body
Can be extruded between magnetic patch, when the distance between permanent magnets is gradually reduced this partial buffer oil, buffering oil will to permanent magnets with
And the motion of kinematic link produces resistance, so as to further buffer, this combination by magnetic force and the buffering of buffering oil can
Make kinematic link buffering effect reach it is best, while also overcoming simple in the prior art mechanical spring buffering, oil buffering
And many deficiencies of magnetic buffering, there is the blanket gas full of air in the oily ullage of buffering in sealing cushion chamber body
Chamber, in initial station, has two or more permanent magnets to be located in sealed air-space, when kinematic link stress is moved downward, with
The permanent magnets of the top are moved down and progress into buffering oil inside by sealed air-space, so when the permanent magnets of the top are close
The resistance being subject to when permanent magnet is close to each other when in envelope air cavity is relatively small, i.e., the resistance of motion to kinematic link is smaller, in institute
After having permanent magnets to enter the oily inside of buffering, buffering oil also has resistance to permanent magnets close to each other, i.e., to the fortune of kinematic link
Dynamic resistance is larger, so with kinematic link to move downward the resistance that is subject to increasing, the kinematic link motion initial stage not
Can cause to cause bounce-back because initial resistance is excessive, motion later stage and the good buffering of energy, shock-absorbing capacity in kinematic link
Preferably.
Further, sealing buffering cavity is made up of upper-lower seal end cap and hollow bushing, lower end cover and hollow sleeve
The adjustable in the axial direction connection of pipe, so by adjust time end cover move up or down can adjust between permanent magnets away from
From, additionally it is possible to the liquid level of regulation buffering oil, buffering the change of oil level height can change positioned at buffering oil level top
Permanent magnets quantity, and then adjust buffer damping characteristics, control buffering effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the embodiment of permanent magnet hydraulic buffer of the invention.
Specific embodiment
A kind of embodiment of permanent magnet hydraulic buffer of the invention：As shown in figure 1, including hollow bushing 1, hollow bushing 1
Upper and lower ends be sealedly connected with upper and lower end cover 11,12 respectively, hollow bushing 1 and upper and lower end cover 11,12 are common
Sealing buffering cavity is constituted, wherein, the center of upper and lower end cover 11,12 offers the through hole for extending up and down, with open circuit
The kinematic link 2 of the drive link connection of device operating mechanism is oriented in above-below direction and is slidedly assemblied in upper and lower end cover 11,12
In central through hole, kinematic link 2 and the guiding of upper and lower the end cover position that is slidably connected are provided with seal washer, seal cushion chamber
It is divided into sealed air-space and lower section of the top full of air equipped with a part of buffering oil and by whole sealing buffering cavity in vivo
The oily part of buffering, the internal series-connection on kinematic link 2 in sealing buffering cavity has two or more permanent magnets, and permanent magnets are dish type,
Center offers the connecting hole for being slidably matched with kinematic link, and permanent magnets are through on kinematic link 2 and can be in kinematic link 2
On slide up and down, in all permanent magnets on kinematic link, per two adjacent permanent magnets opposite face magnetic pole conversely, i.e. adjacent
The like pole of two permanent magnets is oppositely arranged, and repulsion and the phase in the axial direction of kinematic link are mutually produced between each permanent magnets
Permanent magnets 32 away from bottom on certain distance, kinematic link are pressed due to the permanent magnets above gravity and its to its repulsion
It is pressed on lower end cover 12, other permanent magnets on the permanent magnets 32 of bottom are suspended in due to repulsion each other
In sealing cushion chamber body, kinematic link is provided with block flange 201, the lower surface top pressure of block flange 201 in the top forever
The upper surface of magnetic patch 31, when kinematic link is moved downward, the permanent magnets 31 of block flange 201 and the top are in upwardly direction
Upper block is spacing to be moved down with the permanent magnets 31 for merging drive the top, permanent magnets 31 and the phase below of such the top
Distance reduces between adjacent permanent magnets, repulsion increase, and moves down permanent magnets adjacent below, and lower section institute is promoted successively
Some permanent magnets are close to each other, and the repulsion between permanent magnets increases rapidly with the reduction of distance, the repulsion between permanent magnets
Gradually increase and the motion to kinematic link produces resistance, play cushioning effect, in kinematic link motion initial stage the top forever
Magnetic patch 31 and part permanent magnets are located on buffering oil level, with moving downward for kinematic link, the permanent magnets of the top
31 submerge buffers oil lower section, under the two different motion states, because gas and buffering are oily to two adjacent permanent magnets
The resistance produced when close to each other is different, and caused buffering effect is also not quite similar, and when being moved in sealed air-space, gas is to forever
The resistance of relative motion is smaller between magnetic patch, and buffering oil is larger simultaneously to the resistance of relative motion between permanent magnets when in buffering oil
It is directly proportional, cushion effect is larger, the cushioning effect for playing is also just larger, so just into the buffering resistance of kinematic link motion initial stage
Power is smaller, after exercise the larger damping characteristics of phase cushioned resistance, and the buffer unit for being more conform with breaker operation mechanism is wanted
The buffering purpose for reaching, with preferable buffering effect, do not result in because it is excessive in the resistance that the motion initial stage is subject to and caused by it is anti-
Bullet, while phase realization can brake completely after exercise.
Used as preferred, the lower end cover 12 of the present embodiment is up-small and down-big step type, and the lower end of hollow bushing 1 sets
There is up-small and down-big stepped inner peripheral surface, the stepped inner peripheral surface is used to be coincide with lower end cover 12 and coordinates, wherein lower sealing
The outer peripheral face of the big footpath section in lower end of end cap 12 is provided with thread segment, and the big footpath section in lower end of the stepped inner peripheral surface of hollow bushing is provided with use
In the internal thread that the thread segment with lower end cover 12 coordinates, lower end cover 12 is realized by the threaded connection with hollow bushing
Be adjusted axially on hollow bushing, because the top pressure of permanent magnets 32 is in the upper surface of lower end cover 12, lower end cover 12 in
The axial location of hollow bushing can be adjusted when changing kinematic link in the raw when all permanent magnets between
The size of distance, when lower end cover is adjusted up, the distance between all permanent magnets reduce, and have between permanent magnets larger
Initial repulsion, when kinematic link is moved downward, the initial buffer power that permanent magnets are produced to kinematic link just it is larger, it is close under
During the regulation downwards of end-blocking lid, the distance between all permanent magnets increase, and the initial repulsion having between permanent magnets is just smaller,
When kinematic link is moved downward, the initial repulsion that permanent magnets are produced to kinematic link is just smaller, is so easy to slow to kinematic link
Rush the control of effect.
Used as preferred, it is smaller that the hollow bushing 1 of the present embodiment can be arranged to the larger upper end size of lower end radial dimension
Ladder jacket, when in lower end, radial dimension is larger, the big path position in the lower end of hollow bushing stores more buffering oil, in regulation
Just can be bigger to the adjustable range of the liquid level of buffering oil during axial location of the lower end cover on hollow bushing, by right
The regulation of liquid level can control the quantity of the permanent magnets on liquid level, and then control damping characteristics, can adjust surplus larger.
In the present embodiment, sealing buffering cavity is made up of hollow bushing and upper and lower end cap, in other embodiments, upper close
End-blocking lid can be with hollow bushing as one.
In the present embodiment, the permanent magnets of the top are slidably matched and spacing with its block by Stop structure with kinematic link
Coordinate, the permanent magnets top pressure of bottom on lower end cover and with its in a downward direction thrust coordinate, in other implementations
In example, the permanent magnets of the top directly can be fixedly connected with kinematic link, and the permanent magnets of bottom can be directly anchored to down
On end cover.
In the present embodiment, lower end cover realizes the adjustable company in the axial direction of hollow bushing with hollow bushing by screw thread
Connect, in other embodiments, the through hole for radially extending can be set on one section of end cover under the stretching out of kinematic link, lead to
Cross the axial location of the spacing lower end cover of block pin block coordinated with through hole.
The permanent magnet hydraulic buffer of the present embodiment is simultaneously using magnetic buffering and buffering oil buffering, it is to avoid in buffer-braking
During produce mechanical shock cause damage parts, while the initial buffer power of the buffer is smaller, do not result in kinematic link
Bounce-back, possess excellent shock-absorbing capacity, service life is more long.
Claims (5)
1. a kind of permanent magnet hydraulic buffer, it is characterised in that including the kinematic link for being connected with switch lever, transmission
There is connecting rod initial station and stress when not stressing to be moved downward to the buffer station of highest distance position, the transmission in the axial direction
Connecting rod is oriented to along its axis direction and is slidedly assemblied on the sealing buffering cavity for extending up and down, and the kinematic link is buffered with sealing
The guiding of the cavity position that is slidably connected is provided with seal washer, equipped with buffering oil in the sealing cushion chamber body, buffers the liquid level of oil
Top has sealed air-space, has two or more permanent magnets in slidable fit in sealing cushion chamber body on the kinematic link, most goes up
The permanent magnets of side and kinematic link thrust cooperation in an upward direction, the permanent magnets of bottom and the lower end of sealing buffering cavity
Thrust in a downward direction coordinates, and the like pole of two neighboring permanent magnets is oppositely arranged and makes between two neighboring permanent magnets
Repulsion is produced, in initial station, there are two or more permanent magnets to be located in sealed air-space, in buffer station, permanent magnets can
It is completely immersed in buffering oil.
2. permanent magnet hydraulic buffer according to claim 1, it is characterised in that the kinematic link is provided with outer convex edge,
Kinematic link is coordinated by the permanent magnets thrust block of outer convex edge and the top.
3. permanent magnet hydraulic buffer according to claim 1 and 2, it is characterised in that the sealing buffers cavity by hollow
Sleeve pipe and the upper and lower end cover composition for being sealedly connected on hollow bushing upper and lower ends, the upper and lower end cover are provided with confession
The pilot hole that kinematic link is passed through, the permanent magnets top pressure of bottom is matched somebody with somebody in lower end cover upper surface with lower end cover block
Close.
4. permanent magnet hydraulic buffer according to claim 3, it is characterised in that the lower end cover exists with hollow bushing
Adjustable connection on axial direction.
5. permanent magnet hydraulic buffer according to claim 4, it is characterised in that the hollow bushing is small on radial dimension
Reducing hollow pipe big down, the big footpath section in the adjustable lower end for being connected to hollow bushing of lower end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684607.6A CN104500642B (en) | 2014-11-25 | 2014-11-25 | A kind of permanent magnet hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684607.6A CN104500642B (en) | 2014-11-25 | 2014-11-25 | A kind of permanent magnet hydraulic buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500642A CN104500642A (en) | 2015-04-08 |
| CN104500642B true CN104500642B (en) | 2017-06-06 |
Family
ID=52942074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410684607.6A Expired - Fee Related CN104500642B (en) | 2014-11-25 | 2014-11-25 | A kind of permanent magnet hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500642B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608757Y (en) * | 2002-12-11 | 2004-03-31 | 苏祥忠 | Magnetic vibration-damping device |
| CN102374256A (en) * | 2010-08-16 | 2012-03-14 | 富泰华工业（深圳）有限公司 | Shock-absorbing device |
| CN103470669A (en) * | 2013-09-13 | 2013-12-25 | 河北宝信钢铁集团有限公司 | Damping mechanism for magnetic levitation vehicle |
| CN103591201A (en) * | 2013-11-21 | 2014-02-19 | 唐旺 | Telescopic magnetic jackstay |
| CN203685955U (en) * | 2013-11-21 | 2014-07-02 | 唐旺 | Telescopic type magnetic support rod |
| CN204372038U (en) * | 2014-11-25 | 2015-06-03 | 许继集团有限公司 | Permanent magnet hydraulic buffer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130319803A1 (en) * | 2012-06-01 | 2013-12-05 | Tsung-Shih Lee | Magnetic shock absorbing device |
-
2014
- 2014-11-25 CN CN201410684607.6A patent/CN104500642B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608757Y (en) * | 2002-12-11 | 2004-03-31 | 苏祥忠 | Magnetic vibration-damping device |
| CN102374256A (en) * | 2010-08-16 | 2012-03-14 | 富泰华工业（深圳）有限公司 | Shock-absorbing device |
| CN103470669A (en) * | 2013-09-13 | 2013-12-25 | 河北宝信钢铁集团有限公司 | Damping mechanism for magnetic levitation vehicle |
| CN103591201A (en) * | 2013-11-21 | 2014-02-19 | 唐旺 | Telescopic magnetic jackstay |
| CN203685955U (en) * | 2013-11-21 | 2014-07-02 | 唐旺 | Telescopic type magnetic support rod |
| CN204372038U (en) * | 2014-11-25 | 2015-06-03 | 许继集团有限公司 | Permanent magnet hydraulic buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104500642A (en) | 2015-04-08 |
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Granted publication date: 20170606 Termination date: 20191125 |