CN107380385A - Propeller for vessels exciting force friction abatement device - Google Patents
Propeller for vessels exciting force friction abatement device Download PDFInfo
- Publication number
- CN107380385A CN107380385A CN201710573964.9A CN201710573964A CN107380385A CN 107380385 A CN107380385 A CN 107380385A CN 201710573964 A CN201710573964 A CN 201710573964A CN 107380385 A CN107380385 A CN 107380385A
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- China
- Prior art keywords
- propeller
- damping ring
- conical surface
- frictional damping
- pressing plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/15—Propellers having vibration damping means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of propeller for vessels exciting force friction abatement device, including propeller and the impedance bundary device for being installed on propeller hub end, impedance bundary device includes frictional damping ring, pressing plate and fastener, and frictional damping ring is the frustum cone structure of ring-type, and pressing plate is the cylindrical structure of ring-type；The end of propeller hub opens up the conical surface groove matched with frictional damping ring-shaped vertically, and conical surface groove includes the conical surface and end face；The depth of conical surface groove is more than the thickness of frictional damping ring, and frictional damping ring is contained in conical surface groove, has certain interval between the small end face of frictional damping ring and end face；Pressing plate is covered in the outside of frictional damping ring, and is connected by fastener with propeller hub.The impedance bundary device of the present invention does not contact directly with propeller blade, does not interfere with the hydrodynamic performance of propeller；Straight hair sound will not occur for impedance bundary device, the vibration for the blade that can decay, and can reduce the straight hair sound of propeller.
Description
Technical field
The present invention relates to noise reduction technology field, and in particular to a kind of to be used to suppress propeller for vessels exciting force transmission
Rub abatement device.
Background technology
Propeller is one of important propulsion mode of ship.Because propeller works are in non-homogeneous, unsteady tail flow field
In, propeller can also produce the cycle and random pulsation thrust while average thrust is produced, and these pulsation thrusts can lead to
Crossing Propulsion Systems encourages whole ship to vibrate, and the comfortableness and quietness to ship produce considerable influence.It is, in general, that
Wish to produce the propeller of high rigidity, high input impedance, high-damping, high rigidity and high input impedance can effectively improve spiral
The intrinsic frequency of oar and the vibration for suppressing propeller, high-damping can significantly reduce the coupled vibrations transmission of propeller-shafting, from
And make it that be input to each of hull is decayed to transmission power.But the structure of existing propeller limits the first rank of propeller
Intrinsic frequency, it is difficult to further improve, in this case, the damping characteristic that can significantly improve propeller is to reduce propeller
Blade vibration and its important channel of transmission.
Existing propeller typically uses monolithic molding process technology, and coordinates interface is less, and frictional damping is smaller, propeller
Damping depend primarily on propeller longitudinally, laterally with vertical hydrodynamic damping.In order to reduce propeller blade vibration and its pass
Pass, except carrying out matched design in face of parameters, propeller, shafting, the intrinsic frequency of Ship Structure are staggered outer, can be with
Increase propeller damping.
Existing propeller exciting force suppresses following limitation be present：A) when carrying out impedance bundary on propeller blade,
Hydrodynamic Performance on Propeller is easily influenceed, deteriorates the Wake Field at propeller；B) fasten to enter propeller exciting force in elastic shaft
When row suppresses, propeller exciting force has been amplified before suppression；C) in low amplitude vibrations situation and limited interface dimensions,
It is difficult to design the device that can be realized consumed energy, reduce blade vibration and its transmission.
The content of the invention
The technical problem to be solved in the present invention is to be directed to above-mentioned the shortcomings of the prior art, there is provided one kind is used to suppress
The friction abatement device that propeller for vessels blade is vibrated and vibration is transmitted, it is installed on propeller hub end, neither influences propeller tail
Flow field, extra straight hair sound is not introduced yet.
The present invention is that technical scheme is used by solving technical problem set forth above：
A kind of propeller for vessels exciting force rubs abatement device, including propeller and is installed on the propeller hub end
Impedance bundary device, the impedance bundary device includes frictional damping ring, pressing plate and fastener, and the frictional damping ring is ring
The frustum cone structure of shape, the pressing plate are the cylindrical structure of ring-type；The end of propeller hub opens up and frictional damping annular vertically
The conical surface groove of shape matching, the conical surface groove include the conical surface and end face；The depth of the conical surface groove is more than the friction and hindered
The thickness of Buddhist nun's ring, the aperture of conical surface groove large end face are slightly larger than the external diameter of the frictional damping ring large end face, the frictional damping
Ring is contained in the conical surface groove；The pressing plate is covered in the outside of the frictional damping ring, and by the fastener with
The propeller hub connection.
In such scheme, the angle of the conical surface and axial direction is equal to the angle of the side and axial direction of the frictional damping ring,
The end face is perpendicular to axial direction.
In such scheme, the big 2~4mm of thickness of frictional damping ring described in the depth ratio of the conical surface groove.
In such scheme, the end of the propeller hub is additionally provided with vertically faces groove directly, and the groove of facing directly is located at the cone
The outside of face groove simultaneously connects with conical surface groove, the shape for facing groove directly matches with the pressing plate, the groove of facing directly
Aperture is equal to the external diameter of the pressing plate, and the pressing plate is contained in described face directly in groove.
In such scheme, the internal diameter of the pressing plate is less than the internal diameter of the frictional damping ring, and the external diameter of the pressing plate is more than
The external diameter of the frictional damping ring.
In such scheme, the fastener is sunk screw.
In such scheme, the depth for facing groove directly is more than the thickness of the pressing plate.
In such scheme, the material of the impedance bundary device is consistent with the material of the propeller.
In such scheme, the both ends of the propeller hub are mounted on the impedance bundary device.
The beneficial effects of the present invention are：
The present invention installs impedance bundary device, the side of the frictional damping ring of impedance bundary device and oar in the end of propeller hub
Vibrated between the conical surface of hub conical surface groove, produce and cling-the motion state of microslip-slip state, relative motion and rubbed
The hysteresis loop that power forms displacement-force is wiped, dissipation energy, is mainly used in suppressing blade at propeller blade in phase vibration mode and shakes
Amplification that is dynamic and vibrating transmission at from propeller blade to each bearing.Impedance bundary device does not connect directly with propeller blade
Touch, the flow field of blade surface is not influenceed, does not interfere with the hydrodynamic performance of propeller；Impedance bundary device will not occur directly
Sounding, the vibration for the blade that can decay, so as to reduce the straight hair sound of propeller；Impedance bundary device have technique it is simple,
It is easy for installation, additional mass is small, design it is simple the characteristics of.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the front view of propeller for vessels exciting force friction abatement device of the present invention；
Fig. 2 is the side view of propeller for vessels exciting force friction abatement device of the present invention；
Fig. 3 is the dimensional structure diagram of propeller for vessels exciting force friction abatement device of the present invention；
Fig. 4 is propeller hub and the impedance bundary device A-A directions of the propeller for vessels exciting force friction abatement device shown in Fig. 1
Sectional view；
Fig. 5 is Fig. 4 exploded view；
Fig. 6 is schematic enlarged-scale view at Fig. 5 B.
In figure：10th, blade；20th, propeller hub；21st, conical surface groove；211st, the conical surface；212nd, end face；22nd, groove is faced directly；30th, hinder
Buddhist nun's processing unit；31st, frictional damping ring；32nd, pressing plate；33rd, fastener.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now compares accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in figures 1 to 6, it is the propeller for vessels exciting force friction abatement device of a preferred embodiment of the present invention, including spiral shell
Rotation oar and the impedance bundary device 30 for being installed on the end of propeller hub 20, the blade 10 and propeller hub 20 of propeller are integrally formed.
Impedance bundary device 30 includes frictional damping ring 31, pressing plate 32 and fastener 33, and frictional damping ring 31 is the frustum cone structure of ring-type,
Pressing plate 32 is the cylindrical structure of ring-type.The end of propeller hub 20 opens up the conical surface groove with the form fit of frictional damping ring 31 vertically
21, conical surface groove 21 includes the conical surface 211 and end face 212, and the depth of conical surface groove 21 is more than the thickness of frictional damping ring 31, the conical surface
The aperture of the large end face of groove 21 is slightly larger than the external diameter of the large end face of frictional damping ring 31, and the aperture of the small end face of conical surface groove 21 is slightly larger than
The external diameter of the small end face of frictional damping ring 31.Frictional damping ring 31 is contained in conical surface groove 21, the small end face of frictional damping ring 31
There is certain interval between end face 212.Pressing plate 32 is covered in the outside of frictional damping ring 31, and passes through fastener 33 and propeller hub 20
Connection, the conical surface 211 is pressed in by frictional damping ring 31.
When the propeller rotates, blade 10 vibrates in the presence of tail flow field, drives propeller hub 20 to vibrate.And the resistance that rubs
Buddhist nun's ring 31 rotates with propeller, self-centering, the side of frictional damping ring 31 and conical surface groove 21 during rotation
Vibrated between the interface of the conical surface 211, produce and cling-the motion state of microslip-slip state, relative motion and frictional force
Formed displacement-force hysteresis loop, dissipation energy, be mainly used in suppress propeller blade in phase vibration mode at blade 10 vibration
And vibrate the amplification transmitted at from propeller blade 10 to each bearing.Therefore, impedance bundary is installed at propeller hub 20
Device 30 neither influences propeller wake field, does not also introduce extra straight hair sound, has for reducing Ship Vibration and acoustic radiation
Important engineering application value.
Preferably, if 20 two end faces of propeller hub can open conical surface groove 21, oar under the conditions of propeller works are not influenceed
The both ends of hub 20 are respectively provided with impedance bundary device 30, and abatement effect is optimal.
The impedance bundary device 30 of the present invention does not contact directly with propeller blade, does not have shadow to the flow field on the surface of blade 10
Ring, do not interfere with the hydrodynamic performance of propeller；Straight hair sound will not occur for impedance bundary device 30, and the blade 10 that can decay shakes
It is dynamic, so as to reduce the straight hair sound of propeller；Impedance bundary device 30 have technique is simple, easy for installation, additional mass is small,
Design the characteristics of simple.
Further optimize, in the present embodiment, the angle of the conical surface 211 and axial direction is equal to the side and axial direction of frictional damping ring 31
Angle, end face 212 is perpendicular to axial direction.The conical surface 211 and the angle of axial direction should avoid frictional damping ring 31 that self-locking occurs, to protect
It can occur to slide relatively between card frictional damping ring 31 and propeller hub 20, specific corner dimension is needed according to frictional damping ring 31
Depending on the material of propeller hub 20.
Further optimize, in the present embodiment, the big 2~4mm of thickness of the depth ratio frictional damping ring 31 of conical surface groove 21.
Further optimize, in the present embodiment, the end of propeller hub 20 is additionally provided with vertically faces groove 22 directly, faces groove 22 directly
Connected in the outside of conical surface groove 21 and with conical surface groove 21, the shape for facing groove 22 directly matches with pressing plate 32, faces groove 22 directly
Aperture be equal to pressing plate 32 external diameter, pressing plate 32, which is contained in, to be faced directly in groove 22.
Further optimize, in the present embodiment, the internal diameter of pressing plate 32 is less than the internal diameter of frictional damping ring 31, the external diameter of pressing plate 32
More than the external diameter of the lower surface of frictional damping ring 31, enable pressing plate 32 that the large end face of frictional damping ring 31 is completely covered, to be formed
To the more uniform pressure of frictional damping ring 31.
Further optimize, in the present embodiment, fastener 33 is sunk screw, and the outer shroud edge of pressing plate 32 is opened up for pacifying
The screw hole of sunk screw is filled, screw hole is located at the outside of frictional damping ring 31.Sunk screw provides to frictional damping ring 31
Even thrust, it is allowed to be pressed on the conical surface 211.
Further optimize, in the present embodiment, the depth for facing groove 22 directly is more than the thickness of pressing plate 32, and whole sunk screw is equal
Positioned at facing directly in groove 22, the flow field around propeller hub 20 is not influenceed.
Further optimize, in the present embodiment, the material of impedance bundary device 30 is consistent with the material of propeller, avoids because of resistance
Electrochemical corrosion occurs in water environment when Buddhist nun's processing unit 30 and inconsistent propeller material.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (9)
- The abatement device 1. a kind of propeller for vessels exciting force rubs, including propeller and it is installed on the propeller hub end Impedance bundary device, it is characterised in that the impedance bundary device includes frictional damping ring, pressing plate and fastener, the friction Damping ring is the frustum cone structure of ring-type, and the pressing plate is the cylindrical structure of ring-type；The end of propeller hub opens up vertically rubs with described The conical surface groove of damping ring form fit is wiped, the conical surface groove includes the conical surface and end face；The depth of the conical surface groove is more than The thickness of the frictional damping ring, the aperture of conical surface groove large end face are slightly larger than the external diameter of the frictional damping ring large end face, institute Frictional damping ring is stated to be contained in the conical surface groove；The pressing plate is covered in the outside of the frictional damping ring, and passes through institute Fastener is stated to be connected with the propeller hub.
- The abatement device 2. propeller for vessels exciting force according to claim 1 rubs, it is characterised in that the conical surface and axle To angle be equal to the frictional damping ring side with axial direction angle, the end face is perpendicular to axial direction.
- The abatement device 3. propeller for vessels exciting force according to claim 1 rubs, it is characterised in that the conical surface groove Depth ratio described in frictional damping ring the big 2~4mm of thickness.
- The abatement device 4. propeller for vessels exciting force according to claim 1 rubs, it is characterised in that the end of the propeller hub Portion is additionally provided with vertically faces groove directly, and the groove of facing directly is located at the outside of the conical surface groove and connected with conical surface groove, institute State and face the shape of groove directly and matched with the pressing plate, the aperture for facing groove directly is equal to the external diameter of the pressing plate, the pressing plate It is contained in described face directly in groove.
- The abatement device 5. propeller for vessels exciting force according to claim 4 rubs, it is characterised in that the pressing plate it is interior Footpath is less than the internal diameter of the frictional damping ring, and the external diameter of the pressing plate is more than the external diameter of the frictional damping ring.
- The abatement device 6. propeller for vessels exciting force according to claim 4 rubs, it is characterised in that the fastener is Sunk screw.
- The abatement device 7. propeller for vessels exciting force according to claim 6 rubs, it is characterised in that described to face groove directly Depth be more than the pressing plate thickness.
- The abatement device 8. propeller for vessels exciting force according to claim 1 rubs, it is characterised in that the impedance bundary The material of device is consistent with the material of the propeller.
- The abatement device 9. propeller for vessels exciting force according to claim 1 rubs, it is characterised in that the two of the propeller hub End is mounted on the impedance bundary device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573964.9A CN107380385B (en) | 2017-07-14 | 2017-07-14 | Propeller for vessels exciting force friction abatement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573964.9A CN107380385B (en) | 2017-07-14 | 2017-07-14 | Propeller for vessels exciting force friction abatement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107380385A true CN107380385A (en) | 2017-11-24 |
| CN107380385B CN107380385B (en) | 2018-11-06 |
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ID=60340657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710573964.9A Active CN107380385B (en) | 2017-07-14 | 2017-07-14 | Propeller for vessels exciting force friction abatement device |
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| Country | Link |
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| CN (1) | CN107380385B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541890A (en) * | 2019-08-19 | 2019-12-06 | 中国舰船研究设计中心 | design method for keyless connection of rudder system of surface ship |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608709A3 (en) * | 1986-04-22 | 1988-06-24 | Jean Claude Cottin | Dynamic vibration damper for a stepper motor |
| CN1886293A (en) * | 2003-12-30 | 2006-12-27 | 船用螺旋桨有限公司变速螺旋桨构造 | Shock absorber for pitch-adjustable propeller with feathering blades, particularly for sailers |
| CN201129398Y (en) * | 2007-11-30 | 2008-10-08 | 洛阳轴研科技股份有限公司 | Modified type fly wheel body with vibration damping device |
| CN201973154U (en) * | 2010-12-13 | 2011-09-14 | 郑州金鑫机械制造有限公司 | Tapered-face friction buffer |
| CN103161868A (en) * | 2011-12-12 | 2013-06-19 | 湖北三环离合器有限公司 | Damping spacer with variable controllable damping |
| CN105526304A (en) * | 2015-12-02 | 2016-04-27 | 西北工业大学 | Elastic support dry-friction damper with intelligent structure |
| CN206000935U (en) * | 2016-06-20 | 2017-03-08 | 中国舰船研究设计中心 | A kind of marine shafting extensional vibration dampened power shock-absorbing means |
-
2017
- 2017-07-14 CN CN201710573964.9A patent/CN107380385B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608709A3 (en) * | 1986-04-22 | 1988-06-24 | Jean Claude Cottin | Dynamic vibration damper for a stepper motor |
| CN1886293A (en) * | 2003-12-30 | 2006-12-27 | 船用螺旋桨有限公司变速螺旋桨构造 | Shock absorber for pitch-adjustable propeller with feathering blades, particularly for sailers |
| CN201129398Y (en) * | 2007-11-30 | 2008-10-08 | 洛阳轴研科技股份有限公司 | Modified type fly wheel body with vibration damping device |
| CN201973154U (en) * | 2010-12-13 | 2011-09-14 | 郑州金鑫机械制造有限公司 | Tapered-face friction buffer |
| CN103161868A (en) * | 2011-12-12 | 2013-06-19 | 湖北三环离合器有限公司 | Damping spacer with variable controllable damping |
| CN105526304A (en) * | 2015-12-02 | 2016-04-27 | 西北工业大学 | Elastic support dry-friction damper with intelligent structure |
| CN206000935U (en) * | 2016-06-20 | 2017-03-08 | 中国舰船研究设计中心 | A kind of marine shafting extensional vibration dampened power shock-absorbing means |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541890A (en) * | 2019-08-19 | 2019-12-06 | 中国舰船研究设计中心 | design method for keyless connection of rudder system of surface ship |
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| Publication number | Publication date |
|---|---|
| CN107380385B (en) | 2018-11-06 |
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