CN109455286A - A kind of ship stern support device of multifunctional unit - Google Patents
A kind of ship stern support device of multifunctional unit Download PDFInfo
- Publication number
- CN109455286A CN109455286A CN201811359926.4A CN201811359926A CN109455286A CN 109455286 A CN109455286 A CN 109455286A CN 201811359926 A CN201811359926 A CN 201811359926A CN 109455286 A CN109455286 A CN 109455286A
- Authority
- CN
- China
- Prior art keywords
- damping layer
- layer
- limiter
- rigid
- interior
- 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
Links
- 239000010410 layer Substances 0.000 claims abstract description 75
- 238000013016 damping Methods 0.000 claims abstract description 49
- 229920001971 elastomer Polymers 0.000 claims abstract description 18
- 239000000806 elastomer Substances 0.000 claims abstract description 13
- 230000001052 transient effect Effects 0.000 claims abstract description 8
- 230000002159 abnormal effect Effects 0.000 claims abstract description 7
- 239000011229 interlayer Substances 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims description 29
- 229910045601 alloy Inorganic materials 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 241000190019 Guaiacum Species 0.000 description 1
- 235000004440 Guaiacum sanctum Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/36—Shaft tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
The present invention provides a kind of ship stern support devices of multifunctional unit, including to middle ring, outer rigid damping layer, elastomer, interior rigid damping layer and limiter；It is described to be connected by end flange with propeller boss to middle ring, the outer rigid damping layer and interior rigid damping layer are fixedly connected with to middle ring and bearing respectively, protrusion spherical in shape in the middle part of the interior rigid damping layer, the elastomer setting is inside between rigid damping layer protrusion and outer rigid damping layer；The limiter is fixed on outer rigid damping layer end, and limiter bottom surface is away from interior rigid vibration damping layer surface certain distance, for limiting the relative motion of inside and outside rigidity vibration damping interlayer under abnormal transient condition.The present invention is able to solve unbalance loading problem of the spot ship stern bearing under dynamic use environment, is provided simultaneously with dynamic vibration damping and unusual service condition limit function.
Description
Technical field
The present invention relates to technical field of ships, and in particular to a kind of ship stern support device of multifunctional unit.
Background technique
China gradually uses water lubricated rubber bearing since the seventies and eighties in last century in ship, replaces original oil
Lubricate bearing and lignumvitae bearings.For Underwater Ships, though water lubricated rubber bearing can solve it is sudden and violent caused by sealing and oil leak
Dew problem, but its own there is also lubricating water films under the conditions of certain deficiency, especially low-speed heave-load to be not easy to be formed, thus generate compared with
Strong high frequency frictional noise.For this problem, generallyd use in engineering inclination bearing or oblique bore hole method, improve shaft part with
The relative quiescent position of bearing, or the optimization design (as using high molecular material bearing shell) of bearing material and structure is concentrated on,
So as to improve the bearing lubrication characteristic under speed operation.However, being limited to the inherent characteristics of marine shafting, stern bearing needs to carry
The concentrfated load of propeller, the above method only solve the gauche bearings phenomenon under initial mounting state to a certain extent,
It cannot be considered in terms of the dynamically adapting demand of shaft part and bearing in actual motion.In addition, stern bearing is as propeller transversely excited power
The first order be also most important transmission path, damping property directly determines the acoustically radiating jetting of ship especially Underwater Ships
It is flat.Therefore, how to guarantee that stern bearing has both load and vibration-damping function under dynamic use environment, while in turn, ensuring that impact etc.
Safety in operation under unusual service condition is a technical problem of urgent need to resolve in current engineering design.
Summary of the invention
In view of this, being able to solve existing ship the present invention provides a kind of ship stern support device of multifunctional unit
Unbalance loading problem of the oceangoing ship stern bearing under dynamic use environment, is provided simultaneously with dynamic vibration damping and unusual service condition limit function.
A specific embodiment of the invention is as follows:
A kind of ship stern support device of multifunctional unit, including to middle ring, outer rigid damping layer, elastomer, it is interior just
Property damping layer and limiter；
It is described to be connected by end flange with propeller boss to middle ring, the outer rigidity damping layer and interior rigidity damping layer respectively with
Middle ring is fixedly connected with bearing, protrusion spherical in shape in the middle part of the interior rigid damping layer, rigidity subtracts inside for the elastomer setting
Between layer protrusion of shaking and outer rigid damping layer；The limiter is fixed on outer rigid damping layer end, and limiter bottom surface is away from interior rigid
Property vibration damping layer surface certain distance, for limiting the relative motion of inside and outside rigidity vibration damping interlayer under abnormal transient condition.
Further, the limiter is four, is evenly arranged in the end of outer rigid damping layer.
Further, the limiter includes outer layer metal material and internal layer nonmetallic materials, in internal layer nonmetallic materials
Embedded in outer layer metal material.
Further, the distance between the limiter bottom surface and interior rigid vibration damping the layer surface upper limit are abnormal transient condition
Under impact displacement, apart from lower limit be nominal situation under vibration displacement.
Further, described that certain machining allowance is reserved to the outer surface of middle ring and the bow stern end face of end flange.
Further, curved inclined surface is processed into the outer surface to middle ring.
Further, the outer rigid damping layer, interior rigid damping layer are all made of alloy and are made, the damping damage of the alloy
The factor is consumed lower than rubber and is higher than steel.
The utility model has the advantages that
1, the present invention fully considers the actual motion state of stern bearing, will dynamic load, radial vibration-reducing and impact limit
It is integrated in one, integration degree is high, can be from initial mounting state and actual motion state two by using to middle ring and elastomer
A aspect guarantees the parastate of shaft part and bearing, to be conducive to evade the local carrying problem that stern bearing occurs；Secondly, bullet
Property show consideration for and close between internal layer noiseless alloy protrusion and outer layer noiseless alloy, mode of texturing is mainly whole shear-deformable, tool
The function of shaft part Yu bearing parastate is dynamically adjusted under standby operating status, and can effectively evade the deformation of hull for shaft part and axis
Hold the influence of parastate.Meanwhile the modulus of shearing of elastomer nonmetallic materials can be made full use of to guarantee enough inclined rigidities,
And have enough radial rigidities, torsion stiffness and certain axial rigidity.Furthermore limiter can satisfy dynamic use environment
Lower and unusual service condition limit function.
2, the present invention reserves certain machining allowance to the outer surface of middle ring and the bow stern end face of flange, can satisfy initial
Bearing bias and inclined needs when installation.
3, under initial mounting state, due to the effect of propeller gravity G, for shaft part integrally by run-off the straight, the present invention will be right
Curved inclined surface is processed into the outer surface of middle ring, can guarantee that shaft part is parallel with bearing.
Detailed description of the invention
Fig. 1 is structure of the invention composition schematic diagram；
Fig. 2 is the A direction view of Fig. 1；
Fig. 3 is the operation schematic diagram of one embodiment of the invention.
Wherein, 1- is to middle ring, 2- outer layer noiseless alloy, 3- elastomer, 4- internal layer noiseless alloy, 5- limiter.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present invention provides a kind of ship stern support devices of multifunctional unit, as shown in Figure 1, including to middle ring 1, outside
Rigid damping layer, elastomer 3, interior rigid damping layer and limiter 5.Outer rigidity damping layer, interior rigid damping layer are all made of alloy
It is made, respectively outer layer noiseless alloy 2 and internal layer noiseless alloy 4, the damping loss factor of the noiseless alloy is lower than the resistance of rubber
Buddhist nun's fissipation factor and the damping loss factor for being higher than ordinary steel.
It is connected by end flanges with propeller boss to middle ring 1, outer layer noiseless alloy 2 and internal layer noiseless alloy 4 pass through bolt point
It is not fixedly connected with to middle ring 1 and bearing, has protrusion spherical in shape in the middle part of internal layer noiseless alloy 4.Internal layer noiseless alloy 4 and outer layer subtract
Vibration alloy 2 have higher damped coefficient, can sufficiently decay shafting vibration to hull transmitting magnitude.Elastomer 3 is nonmetallic
Material, monnolithic case are processed into spherical shape, for providing the inclination needs of actual motion middle (center) bearing, and can guarantee it is enough it is axial,
Radial direction and torsion stiffness.Internal layer noiseless alloy protrusion is arranged in elastomer 3 by way of being pressed into or being bonded and outer layer vibration damping closes
Between gold 2, for guaranteeing the parastate of axis and bearing under actual operating mode.
Limiter 5 includes outer layer metal material and internal layer nonmetallic materials, and internal layer nonmetallic materials are embedded in outer layer metal
In material.Limiter 5 is four, 2 end of outer layer noiseless alloy is uniformly fixed on by bolt, 5 bottom surface of limiter subtracts away from internal layer
Shake 4 surface certain distance of alloy, is the impact displacement under abnormal transient condition apart from the upper limit, is under nominal situation apart from lower limit
Vibration displacement, for limiting the relative motion under abnormal transient condition between internal layer noiseless alloy 4, outer layer noiseless alloy 2.Meanwhile
Under most stable state and transient condition, it is not in contact between limiter 5 and internal layer noiseless alloy 4.
Certain machining allowance is reserved in the bow stern end face of outer surface and flange to middle ring 1, bearing when for initially installing
Eccentric and inclined needs.According to eccentric and sloping demand to the outer surface to middle ring 1 and after end flanges process, lead to
Uniformly bolt is crossed to be installed on inside propeller boss.Outer layer noiseless alloy 2, elastomer 3, internal layer noiseless alloy 4 and bearing have assembled
At later, the inside to middle ring 1 is installed on from stern.It is finally calculated according to the safety that shafting absorbs impact, designs limiter 5
The reasonable gap width between internal layer noiseless alloy 4, and limiter 5 is installed on to the end of outer layer noiseless alloy 2, limiter 5
Arrangement form is as shown in Figure 2.
As shown in figure 3, under initial mounting state, due to the effect of propeller gravity G, shaft part integrally by run-off the straight, this
When, curved inclined surface will be processed into the outer surface of middle ring 1, guarantees that shaft part is parallel with bearing.Under actual motion state, due to pushing away
Into the effect of device exciting force F1 and deformation of hull F2, the relative position of shaft part and bearing will change, at this time the two parallel shape
The holding of state passes through the shear-deformable realization of elastomer 3.In addition, propeller exciting force F1 is transmitted to the vibration of propeller boss, by interior
Layer noiseless alloy 4 and internal layer noiseless alloy 2 are decayed step by step.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of ship stern support device of multifunctional unit, which is characterized in that including to middle ring, outer rigid damping layer, bullet
Property body, interior rigid damping layer and limiter；
It is described to be connected by end flange with propeller boss to middle ring, the outer rigidity damping layer and interior rigidity damping layer respectively with centering
Ring is fixedly connected with bearing, protrusion spherical in shape in the middle part of the interior rigid damping layer, rigid damping layer including the elastomer setting
It is raised between outer rigid damping layer；The limiter is fixed on outer rigid damping layer end, and limiter bottom surface subtracts away from interior rigidity
Shake layer surface certain distance, for limiting the relative motion of inside and outside rigidity vibration damping interlayer under abnormal transient condition.
2. the ship stern support device of multifunctional unit as described in claim 1, which is characterized in that the limiter is four
It is a, it is evenly arranged in the end of outer rigid damping layer.
3. the ship stern support device of multifunctional unit as described in claim 1, which is characterized in that the limiter includes
Outer layer metal material and internal layer nonmetallic materials, internal layer nonmetallic materials are embedded in outer layer metal material.
4. the ship stern support device of multifunctional unit as described in claim 1, which is characterized in that the limiter bottom surface
The distance between the interior rigid vibration damping layer surface upper limit is that the impact under abnormal transient condition is displaced, and is nominal situation apart from lower limit
Under vibration displacement.
5. the ship stern support device of multifunctional unit as described in claim 1, which is characterized in that described to the outer of middle ring
Certain machining allowance is reserved in surface and the bow stern end face of end flange.
6. the ship stern support device of multifunctional unit as described in claim 1, which is characterized in that described to the outer of middle ring
It is processed into curved inclined surface in surface.
7. the ship stern support device of multifunctional unit as described in claim 1, which is characterized in that the outer rigid vibration damping
Layer, interior rigid damping layer are all made of alloy and are made, and the damping loss factor of the alloy lower than rubber and is higher than steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359926.4A CN109455286A (en) | 2018-11-15 | 2018-11-15 | A kind of ship stern support device of multifunctional unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359926.4A CN109455286A (en) | 2018-11-15 | 2018-11-15 | A kind of ship stern support device of multifunctional unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109455286A true CN109455286A (en) | 2019-03-12 |
Family
ID=65610511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811359926.4A Pending CN109455286A (en) | 2018-11-15 | 2018-11-15 | A kind of ship stern support device of multifunctional unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109455286A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750199A (en) * | 2020-07-22 | 2020-10-09 | 武汉麦康德设备有限公司 | Marine horizontal double bridge vibration isolation pipe clamp |
| CN111750201A (en) * | 2020-07-22 | 2020-10-09 | 武汉麦康德设备有限公司 | Marine vertical double bridge vibration isolation pipe clamp |
| CN111750203A (en) * | 2020-07-22 | 2020-10-09 | 武汉麦康德设备有限公司 | Marine double-bridge double-seat vibration isolation pipe clamp |
| CN114655416A (en) * | 2022-02-22 | 2022-06-24 | 中国船舶重工集团公司第七一九研究所 | Ship propulsion shafting structure and ship |
| CN115180109A (en) * | 2022-07-07 | 2022-10-14 | 中国船舶重工集团公司第七一九研究所 | Propulsion system for ship and ship |
| CN115180110A (en) * | 2022-07-07 | 2022-10-14 | 中国船舶重工集团公司第七一九研究所 | Ship propulsion system and ship |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1511913A (en) * | 1976-04-06 | 1978-05-24 | Kuiken J | Ship's propeller shaft stern bearings |
| CN1573142A (en) * | 2003-06-03 | 2005-02-02 | Skf股份公司 | Sliding bearing having spherical or columnar bearing surface |
| CN2802175Y (en) * | 2005-06-29 | 2006-08-02 | 中国人民解放军63983部队 | Compound lining |
| CN101694233A (en) * | 2009-10-19 | 2010-04-14 | 株洲时代新材料科技股份有限公司 | Rubber-metal spherical hinge provided with hard stop catch on end face |
| CN102011796A (en) * | 2010-12-16 | 2011-04-13 | 武汉理工大学 | Self-aligning spherical plain water lubricated tail bearing for ships |
| CN201872944U (en) * | 2010-11-26 | 2011-06-22 | 中国船舶重工集团公司第七一九研究所 | Automatic centering device for ship stern bearing |
| CN102336264A (en) * | 2010-07-28 | 2012-02-01 | 江苏华阳重工科技股份有限公司 | Self-aligning rotary vane type hydraulic steering gear |
| CN102465966A (en) * | 2010-11-11 | 2012-05-23 | 陈友勤 | Novel structure of bearing seat |
| CN106438667A (en) * | 2016-11-11 | 2017-02-22 | 中国船舶重工集团公司第七0三研究所 | Elastic link mechanism for transmitting torque |
| KR20170028075A (en) * | 2015-09-03 | 2017-03-13 | 삼성중공업 주식회사 | Bush device for ship |
| CN107628218A (en) * | 2017-09-08 | 2018-01-26 | 中国船舶重工集团公司第七〇九研究所 | A kind of stern bearing cast damping unit and preparation method |
| CN209441595U (en) * | 2018-11-15 | 2019-09-27 | 中国船舶重工集团公司第七一九研究所 | A kind of ship stern support device of multifunctional unit |
-
2018
- 2018-11-15 CN CN201811359926.4A patent/CN109455286A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1511913A (en) * | 1976-04-06 | 1978-05-24 | Kuiken J | Ship's propeller shaft stern bearings |
| CN1573142A (en) * | 2003-06-03 | 2005-02-02 | Skf股份公司 | Sliding bearing having spherical or columnar bearing surface |
| CN2802175Y (en) * | 2005-06-29 | 2006-08-02 | 中国人民解放军63983部队 | Compound lining |
| CN101694233A (en) * | 2009-10-19 | 2010-04-14 | 株洲时代新材料科技股份有限公司 | Rubber-metal spherical hinge provided with hard stop catch on end face |
| CN102336264A (en) * | 2010-07-28 | 2012-02-01 | 江苏华阳重工科技股份有限公司 | Self-aligning rotary vane type hydraulic steering gear |
| CN102465966A (en) * | 2010-11-11 | 2012-05-23 | 陈友勤 | Novel structure of bearing seat |
| CN201872944U (en) * | 2010-11-26 | 2011-06-22 | 中国船舶重工集团公司第七一九研究所 | Automatic centering device for ship stern bearing |
| CN102011796A (en) * | 2010-12-16 | 2011-04-13 | 武汉理工大学 | Self-aligning spherical plain water lubricated tail bearing for ships |
| KR20170028075A (en) * | 2015-09-03 | 2017-03-13 | 삼성중공업 주식회사 | Bush device for ship |
| CN106438667A (en) * | 2016-11-11 | 2017-02-22 | 中国船舶重工集团公司第七0三研究所 | Elastic link mechanism for transmitting torque |
| CN107628218A (en) * | 2017-09-08 | 2018-01-26 | 中国船舶重工集团公司第七〇九研究所 | A kind of stern bearing cast damping unit and preparation method |
| CN209441595U (en) * | 2018-11-15 | 2019-09-27 | 中国船舶重工集团公司第七一九研究所 | A kind of ship stern support device of multifunctional unit |
Non-Patent Citations (1)
| Title |
|---|
| 刘学伟;何其伟;楼京俊;李海峰;杨庆超;: "轴系校中状态对艉轴承力传递特性影响", 噪声与振动控制, no. 04, pages 79 - 84 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750199A (en) * | 2020-07-22 | 2020-10-09 | 武汉麦康德设备有限公司 | Marine horizontal double bridge vibration isolation pipe clamp |
| CN111750201A (en) * | 2020-07-22 | 2020-10-09 | 武汉麦康德设备有限公司 | Marine vertical double bridge vibration isolation pipe clamp |
| CN111750203A (en) * | 2020-07-22 | 2020-10-09 | 武汉麦康德设备有限公司 | Marine double-bridge double-seat vibration isolation pipe clamp |
| CN114655416A (en) * | 2022-02-22 | 2022-06-24 | 中国船舶重工集团公司第七一九研究所 | Ship propulsion shafting structure and ship |
| CN115180109A (en) * | 2022-07-07 | 2022-10-14 | 中国船舶重工集团公司第七一九研究所 | Propulsion system for ship and ship |
| CN115180110A (en) * | 2022-07-07 | 2022-10-14 | 中国船舶重工集团公司第七一九研究所 | Ship propulsion system and ship |
| CN115180110B (en) * | 2022-07-07 | 2024-06-07 | 中国船舶重工集团公司第七一九研究所 | Ship propulsion system and ship |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109455286A (en) | A kind of ship stern support device of multifunctional unit | |
| US10598014B2 (en) | Turbomachine | |
| CN112228449B (en) | Variable-rigidity intelligent water-lubricated bearing and power transmission system thereof | |
| CN111442051A (en) | Active thrust balance type shafting longitudinal vibration damper | |
| CN105114446B (en) | Variable ladder damps thrust bearing | |
| US20120018577A1 (en) | Engine mounting with an adapted load/deformation curve | |
| CN209441595U (en) | A kind of ship stern support device of multifunctional unit | |
| WO2013154852A1 (en) | Turbocharger with thrust bearing providing combined journal and thrust bearing functions | |
| CN101311584B (en) | Shock resistance axial seal device for screw shaft of ship | |
| CN102937146A (en) | Hydraulic integrated vibration reduction and absorption thrust bearing | |
| CN109764063B (en) | Water-lubricated bearing with large damping longitudinal differential stiffness for ship | |
| CN201872944U (en) | Automatic centering device for ship stern bearing | |
| CN211592899U (en) | Ship thrust bearing noise reduction processing device and ship | |
| CN109533260B (en) | Ship stern bearing restraint isolation structure device | |
| JP2001303964A (en) | Bearing structure for turbo charger | |
| CN103089837B (en) | Positive-negative spring parallel connection type semi active control coupler | |
| CN101799038A (en) | Shock proof cylinder roller bearing | |
| CN201568317U (en) | Nuclear three-stage essential service water pump | |
| CN204692452U (en) | A kind of vibration damper | |
| CN201176260Y (en) | Shock resistance axial seal device for screw shaft of ship shock resistance type axial seal device for stern shaft of shipping | |
| JP2007113708A (en) | Rotation stop structure of bearing, and supercharger using the same | |
| CN107269760A (en) | Pier self-positioning damps rope vibration absorber | |
| CN208364715U (en) | A kind of flat spring formula tension pulley | |
| CN215673933U (en) | Modularization intertube way elastic support | |
| CN208686477U (en) | A kind of vibration damping covering device for turbocharger rotor vibration stress |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190312 |
|
| WD01 | Invention patent application deemed withdrawn after publication |