CN107339353A - A kind of marine drive shafting adjustable damping damping device - Google Patents
A kind of marine drive shafting adjustable damping damping device Download PDFInfo
- Publication number
- CN107339353A CN107339353A CN201710730516.5A CN201710730516A CN107339353A CN 107339353 A CN107339353 A CN 107339353A CN 201710730516 A CN201710730516 A CN 201710730516A CN 107339353 A CN107339353 A CN 107339353A
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- CN
- China
- Prior art keywords
- adjustable
- damping
- outer race
- calutron
- vibration
- 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.)
- Pending
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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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of marine drive shafting adjustable damping damping device, including bearing, controller, vibration-detecting instrument and adjustable DC power supply, bearing holder (housing, cover) is loaded in drive shaft system, bearing includes the bearing inner ring and outer race being mutually arranged, cavity is formed between bearing inner ring and outer race, annular permanent magnet is arranged with the outer wall of bearing inner ring, multiple calutrons have been uniformly distributed circumferentially on the inwall of outer race, have had gap between calutron and annular permanent magnet；Vibration-detecting instrument is arranged on the outer wall of outer race, vibration-detecting instrument is connected with controller, controller is connected by adjustable DC power supply with calutron, controller detects the magnitude of vibrations of drive shaft system by vibration-detecting instrument, according to the output of the magnitude of vibrations regulation power supply electric current of drive shaft system, so as to adjust the repulsion between calutron and annular permanent magnet.Realization monitors in real time to marine drive shaft vibration, and according to the magnitude of vibrations automatic damping adjusting size of rotation axis system, damping performance is good, adjusts fast response time.
Description
Technical field
The present invention relates to line shaft cushion technique field, and in particular to a kind of marine drive shafting adjustable damping damping
Device.
Background technology
Marine drive shafting is realize energy transmission between engine of boat and ship and propeller (being usually propeller) important
System, while thrust caused by propeller is also passed into hull, promote ship to advance.Line shaft system at work can not
Evitable to produce vibration, the vibration of drive shaft system is in addition to the Working Life for producing influence of noise ship's staff, it is also possible to causes
Partial structurtes part fatigue rupture, or mechanical equipment fault, or even influence the normal/cruise of ship.Current marine drive shafting is usual
Damping is carried out using damping unit.Enter row buffering or the chamber in bearing between outer shroud by installing rubber on bearing
The mode that lubricating oil is injected in body carries out damping.
CN102788113A discloses a kind of marine drive shafting vibration absorber, and the device utilizes power transmission shaft vibration-extrusion oil
Film reaches the purpose of vibration damping, but the vibration absorber only has one-level vibration-proof structure, and damping effect is bad, and damping be present can not
The shortcomings that control.
The content of the invention
The technical problem to be solved in the present invention is, in view of the foregoing defects the prior art has, there is provided a kind of ship passes
Moving axis system adjustable damping damping device, realizes and marine drive shaft vibration is monitored in real time, according to the magnitude of vibrations of rotation axis system certainly
Dynamic regulation damping size, damping performance is good, adjusts fast response time.
The present invention is that technical scheme is used by solving above-mentioned technical problem：
A kind of marine drive shafting adjustable damping damping device, including bearing, bearing holder (housing, cover) are loaded in drive shaft system, bearing bag
The bearing inner ring and outer race being mutually arranged are included, cavity, the outer wall of bearing inner ring are formed between bearing inner ring and outer race
On be arranged with annular permanent magnet, multiple calutrons, calutron and ring have been uniformly distributed circumferentially on the inwall of outer race
There is gap between shape permanent magnet；
Described adjustable damping damping device also includes controller, vibration-detecting instrument and adjustable DC power supply, vibration detection
Instrument is arranged on the outer wall of outer race, and vibration-detecting instrument is connected with controller, and controller passes through adjustable DC power supply and electromagnetism
Device is connected, and controller detects the magnitude of vibrations of drive shaft system by vibration-detecting instrument, and the magnitude of vibrations according to drive shaft system is adjusted
The output of adjustable DC source current is saved, so as to adjust the repulsion between calutron and annular permanent magnet.
By above-mentioned technical proposal, the outer wall of bearing inner ring is provided with annular groove, and annular permanent magnet is nested in annular groove
It is interior.
By above-mentioned technical proposal, heavy viscous material is marked with cavity.
By above-mentioned technical proposal, calutron includes armature, and magnet exciting coil, the bottom of armature and bearing are wound with armature
The inwall connection of outer shroud.
By above-mentioned technical proposal, be connected with angle bar between the bottom of armature and outer race, angle bar by bolt respectively with
Armature connects with outer race.
By above-mentioned technical proposal, the number of described calutron is 6~10.
By above-mentioned technical proposal, outer race is provided with multiple wire through-holes, and one end of wire is connected with calutron, led
The other end of line is through wire by being connected with the adjustable DC power supply outside bearing.
By above-mentioned technical proposal, sealing rubber plug is provided with wire through-hole, prevents oil leakage in bearing bore body.
By above-mentioned technical proposal, the inwall of outer race is regular polygon, the side number of regular polygon and of calutron
Number is consistent, and calutron is fixedly arranged on the side of corresponding regular polygon.
By above-mentioned technical proposal, the calutron and annular magnet of opposite face are same pole.
The invention has the advantages that：
1st, the present invention is entered by the principle that identical charges repel each other between calutron and annular permanent magnet to marine drive shafting
Row vibration damping, good effectiveness in vibration suppression is realized, and combine the setting of vibration-detecting instrument, controller and adjustable DC power supply, realization pair
Marine drive shaft vibration monitors in real time, according to the magnitude of vibrations automatic damping adjusting size of rotation axis system, realizes and automatically controls,
Damping performance is good, adjusts fast response time.
2nd, machinery is avoided by the homopolar-repulsion principle between calutron and annular permanent magnet and extruding lubricating oil
Abrasion, realizes Multistage damping, further increases damping performance, reduces noise.
Brief description of the drawings
Fig. 1 is the structural representation of marine drive shafting adjustable damping damping device in the embodiment of the present invention；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is the structural representation of calutron in the embodiment of the present invention；
In figure, 1- vibration-detecting instruments, 2- wires, 3- controllers, 4- adjustable DC power supplys, 5- outer races, 6- electromagnetic installings
Put, 7- sealing rubber plugs, 8- wire through-holes, 9- drive shaft systems, 10- annular permanent magnets, 11- bearing inner rings, 12- cavitys, 13- ranks
Iron, 14-L shape angle bar, 15- bolts, 16- magnet exciting coils.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Shown in 1~Fig. 3 of reference picture, the marine drive shafting adjustable damping damping dress in one embodiment provided by the invention
Put, including bearing, for bearing holder (housing, cover) loaded in drive shaft system 9, bearing includes the bearing inner ring 11 and outer race 5 being mutually arranged, axle
Formation cavity 12 is held between inner ring 11 and outer race, is arranged with annular permanent magnet 10 on the outer wall of bearing inner ring 11, outside bearing
Multiple calutrons 6 have been uniformly distributed circumferentially on the inwall of ring 5, have had gap between calutron 6 and annular permanent magnet 10；
Described adjustable damping damping device also includes controller 3, vibration-detecting instrument 1 and adjustable DC power supply 4, vibration inspection
Survey instrument 1 to be arranged on the outer wall of outer race 5, vibration-detecting instrument 1 is connected with controller 3, and controller 3 passes through power supply and electromagnetic installing
6 connections are put, controller 3 detects the magnitude of vibrations of drive shaft system 9 by vibration-detecting instrument 1, the magnitude of vibrations according to drive shaft system 9
The output of the electric current of adjustable DC power supply 4 is adjusted, (is hindered so as to adjust the repulsion between calutron 6 and annular permanent magnet 10
Buddhist nun).
Further, the outer wall of bearing inner ring 11 is provided with annular groove, and annular permanent magnet 10 is nested in annular groove,
The annular groove of annular permanent magnet 10 and bearing inner ring 11 is interference fit.
Further, heavy viscous material is marked with cavity 12, as second level vibration damping.
Further, described heavy viscous material is thick oil, specially methyl-silicone oil.
Further, calutron 6 includes armature 13, is wound with magnet exciting coil 16 on armature 13, the bottom of armature 13 with
The inwall connection of outer race 5.
Further, armature 13 is neodymium iron boron strong magnets, has good damping effect.
Further, be connected with angle bar between the bottom of armature 13 and outer race 5, angle bar by bolt 15 respectively with rank
Iron 13 and outer race 5 connect, and described angle bar is L-shaped angle bar 14.
Further, the number of described calutron 6 is 8.
Further, outer race 5 is provided with multiple wire through-holes 8, and one end of wire 2 is connected with calutron 6, wire
2 other end is through wire by being connected with the adjustable DC power supply outside bearing.
Further, sealing rubber plug 7 is provided with wire through-hole 8, prevents oil leakage in bearing cavity 12.
Further, adjustable DC power supply is connected by wire with magnet exciting coil 16.
Further, the inwall of outer race 5 is regular polygon, the side number of regular polygon and the number one of calutron 6
Cause, calutron 6 is fixedly arranged on the side of corresponding regular polygon.
Further, the calutron 6 of opposite face and annular magnet are same pole.
Further, when power transmission shaft 9 does not operate, the controller 3 in the latter half controls respectively while directly adjustable
Dc source 4, so as to indirect control the latter half calutron 6, make its between annular permanent magnet 10 repulsion upward
It is upward to make a concerted effort and power transmission shaft 9 is identical with the total force of bearing inner ring 11 supports power transmission shaft 9 and bearing inner ring 11.
In one embodiment of the present of invention, operation principle of the invention：
The adjustable damping damping device of marine drive shafting 9 of the embodiment of the present invention, including cavity 12, the inside of cavity 12 are set
There are outer race 5 and drive shaft system 9, inject heavy viscous material in cavity 12；Wherein, the inwall of outer race 5 is octagon, its
On be axially installed with eight Central Symmetries in the calutron 6 in the power transmission shaft center of circle, and positioned at eight angles of octagon go out point
An axial lead through hole 8 is not provided with, wire through-hole 8, which is provided at both ends with sealing rubber plug 7, prevents oil leak in cavity 12,
The wire of connection adjustable DC power supply 4 and calutron 6 passes through from the sealing rubber plug 7 at wire through-hole 8 and both ends；Power transmission shaft
It is that fixed cover is equipped with bearing inner ring 11 on 9, being provided with groove on bearing inner ring 11 is set with annular permanent magnet 10, power transmission shaft 9, bearing
Inner ring 11, annular permanent magnet 10, outer race 5 for be co-axially mounted and bearing inner ring 11 and power transmission shaft 9, annular permanent magnet 10 with
Groove part is interference fit；The opposite face of calutron 6 and annular permanent magnet 10 is same pole, and calutron and annular are forever
Gap between magnet be present.
As shown in figure 3, calutron 6 includes armature 13, magnet exciting coil 16, L-shaped angle bar 14, fixing bolt 15, wherein holding in the mouth
Strong magnets of the iron 13 with annular permanent magnet 10 using NdFeB material, to produce sufficiently large damping；Magnet exciting coil 16 is copper
Coil processed, it is tightly wound around on armature 13.The fixing device of calutron 6 is four L-shaped angle bar 14 for being provided with screw and fixed
Bolt 15, and be fixed on by the fixing device on the inwall of outer race 5；
After power transmission shaft 9 inevitably produces vibration in rotation process, power transmission shaft that vibration-detecting instrument 1 will detect
Vibration signal such as frequency, acceleration, displacement etc. pass to controller 3, and controller 3 will export by the analyzing and processing to signal
Control instruction is sent to adjustable DC power supply 4, and the control signal that adjustable DC power supply 4 is sent according to controller 3 exports to adjust
Size of current, the active force between calutron 6 and annular permanent magnet 10 is controlled with this, timely adjusting damping device
The damping applied to drive shaft system 9, realize the automation of power transmission shaft vibration damping.Due to being set with ring in the groove of bearing inner ring 11
Shape permanent magnet 10, so drive shaft system 9 equably can be pacified in rotation process by eight Central Symmetries in the power transmission shaft center of circle
The active force that the calutron 6 of dress applies to it, the very effective vibration for reducing shafting of energy, by being set side by side on power transmission shaft
Put three groups of calutrons and annular permanent magnet, power transmission shaft can be prevented because of unbalance stress and caused by damage.In this, as the first order
Damping.
2 larger methyl-silicone oils of viscosity are filled with cavity between outer race 5 and bearing inner ring 11, can be effectively
Caused partial vibration in drive shaft system vibration processes is absorbed, second level damping is used as with this.
Heavy viscous material in cavity 12 is 2 methyl-silicone oils.
The both ends of wire through-hole 8 add sealing rubber plug 7, prevent the leakage of the methyl-silicone oil of cavity medium-high viscosity material 2.
When power transmission shaft 9 does not operate, the controller 3 in the latter half directly controls three adjustable DC electricity simultaneously respectively
Source 4, so as to which three calutrons 6 of indirect control make between three calutrons 6 and annular permanent magnet 10 repulsion in upward direction
On make a concerted effort and power transmission shaft 9 is with the total force of bearing inner ring 11 identical supports power transmission shaft 9 and bearing inner ring 11.
The interest field for being only presently preferred embodiments of the present invention, the present invention can not being limited with this certainly above,
Therefore the equivalence changes made according to scope of the present invention patent, still belong to protection scope of the present invention.
Claims (10)
1. a kind of marine drive shafting adjustable damping damping device, it is characterised in that including bearing, bearing holder (housing, cover) is loaded on drive shaft system
On, bearing includes the bearing inner ring and outer race that are mutually arranged, forms cavity between bearing inner ring and outer race, in bearing
Annular permanent magnet is arranged with the outer wall of ring, multiple calutrons, electromagnetism have been uniformly distributed circumferentially on the inwall of outer race
There is gap between device and annular permanent magnet；
Described adjustable damping damping device also includes controller, vibration-detecting instrument and adjustable DC power supply, vibration-detecting instrument and set
It is placed on the outer wall of outer race, vibration-detecting instrument is connected with controller, and controller passes through adjustable DC power supply and calutron
Connection, controller detect the magnitude of vibrations of drive shaft system by vibration-detecting instrument, and the magnitude of vibrations regulation according to drive shaft system can
The output of tuning DC source current, so as to adjust the repulsion between calutron and annular permanent magnet.
2. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that outside bearing inner ring
Wall is provided with annular groove, and annular permanent magnet is nested in annular groove.
3. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that height is marked with cavity
Viscosity material.
4. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that calutron includes
Armature, magnet exciting coil is wound with armature, and the bottom of armature and the inwall of outer race connect.
5. marine drive shafting adjustable damping damping device according to claim 4, it is characterised in that the bottom of armature with
Angle bar is connected between outer race, angle bar is connected with armature and outer race respectively by bolt.
6. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that described electromagnetic installing
The number put is 6~10.
7. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that set on outer race
Have multiple wire through-holes, one end of wire is connected with calutron, the other end of wire through wire by with outside bearing can
Tuning DC power supply connects.
8. marine drive shafting adjustable damping damping device according to claim 7, it is characterised in that set in wire through-hole
There is sealing rubber plug, prevent oil leakage in bearing bore body.
9. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that outer race it is interior
Wall is regular polygon, and the side number of regular polygon is consistent with the number of calutron, and calutron is fixedly arranged on corresponding regular polygon
Bian Shang.
10. marine drive shafting adjustable damping damping device according to claim 1, it is characterised in that the electricity of opposite face
Magnetic device and annular magnet are same pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710730516.5A CN107339353A (en) | 2017-08-23 | 2017-08-23 | A kind of marine drive shafting adjustable damping damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710730516.5A CN107339353A (en) | 2017-08-23 | 2017-08-23 | A kind of marine drive shafting adjustable damping damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107339353A true CN107339353A (en) | 2017-11-10 |
Family
ID=60214769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710730516.5A Pending CN107339353A (en) | 2017-08-23 | 2017-08-23 | A kind of marine drive shafting adjustable damping damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107339353A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123705A (en) * | 2019-12-18 | 2020-05-08 | 南京航空航天大学 | Design method for active vibration control of propeller and transmission shaft system |
| CN111457052A (en) * | 2020-05-19 | 2020-07-28 | 长安大学 | Self-powered electromagnetic vibration damper |
| CN117890093A (en) * | 2024-03-12 | 2024-04-16 | 太仓点石航空动力有限公司 | Vibration damping characteristic test equipment and test method for extrusion oil film damper |
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| JPH09257034A (en) * | 1996-03-22 | 1997-09-30 | Ebara Corp | Fluid machine having magnetic bearing and hydrostatic bearing |
| CN2738466Y (en) * | 2004-11-04 | 2005-11-02 | 浙江大学 | Electric eddy-current damping device for rotary mechanical rotor |
| CN101109416A (en) * | 2007-08-08 | 2008-01-23 | 潘旭华 | Method for regulating roundness of static pressure bearing slewing axis |
| CN102155492A (en) * | 2011-05-18 | 2011-08-17 | 哈尔滨工业大学 | Mixed type driving and driven magnetic suspension bearing |
| CN104141685A (en) * | 2014-08-06 | 2014-11-12 | 贾新涛 | Driving and driven inner rotor magnetic bearing |
| CN104455180A (en) * | 2014-10-16 | 2015-03-25 | 浙江省海运集团舟山五洲船舶修造有限公司 | Stabilization sleeve for slender shaft of marine engine |
| CN105605135A (en) * | 2016-01-26 | 2016-05-25 | 南京航空航天大学 | Magnetic suspension dynamic vibration absorber as well as vibration absorption system and working method of magnetic suspension dynamic vibration absorber |
| CN105915015A (en) * | 2016-05-31 | 2016-08-31 | 武汉理工大学 | Ship transmission shafting vibration reduction energy recovery device |
-
2017
- 2017-08-23 CN CN201710730516.5A patent/CN107339353A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257034A (en) * | 1996-03-22 | 1997-09-30 | Ebara Corp | Fluid machine having magnetic bearing and hydrostatic bearing |
| CN2738466Y (en) * | 2004-11-04 | 2005-11-02 | 浙江大学 | Electric eddy-current damping device for rotary mechanical rotor |
| CN101109416A (en) * | 2007-08-08 | 2008-01-23 | 潘旭华 | Method for regulating roundness of static pressure bearing slewing axis |
| CN102155492A (en) * | 2011-05-18 | 2011-08-17 | 哈尔滨工业大学 | Mixed type driving and driven magnetic suspension bearing |
| CN104141685A (en) * | 2014-08-06 | 2014-11-12 | 贾新涛 | Driving and driven inner rotor magnetic bearing |
| CN104455180A (en) * | 2014-10-16 | 2015-03-25 | 浙江省海运集团舟山五洲船舶修造有限公司 | Stabilization sleeve for slender shaft of marine engine |
| CN105605135A (en) * | 2016-01-26 | 2016-05-25 | 南京航空航天大学 | Magnetic suspension dynamic vibration absorber as well as vibration absorption system and working method of magnetic suspension dynamic vibration absorber |
| CN105915015A (en) * | 2016-05-31 | 2016-08-31 | 武汉理工大学 | Ship transmission shafting vibration reduction energy recovery device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123705A (en) * | 2019-12-18 | 2020-05-08 | 南京航空航天大学 | Design method for active vibration control of propeller and transmission shaft system |
| CN111123705B (en) * | 2019-12-18 | 2021-09-21 | 南京航空航天大学 | Design method for active vibration control of propeller and transmission shaft system |
| CN111457052A (en) * | 2020-05-19 | 2020-07-28 | 长安大学 | Self-powered electromagnetic vibration damper |
| CN117890093A (en) * | 2024-03-12 | 2024-04-16 | 太仓点石航空动力有限公司 | Vibration damping characteristic test equipment and test method for extrusion oil film damper |
| CN117890093B (en) * | 2024-03-12 | 2024-05-10 | 太仓点石航空动力有限公司 | Vibration damping characteristic test equipment and test method for extrusion oil film damper |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171110 |
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| RJ01 | Rejection of invention patent application after publication |