CN204985330U - Mechanical type damping thrust bearing - Google Patents
Mechanical type damping thrust bearing Download PDFInfo
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- CN204985330U CN204985330U CN201520560749.1U CN201520560749U CN204985330U CN 204985330 U CN204985330 U CN 204985330U CN 201520560749 U CN201520560749 U CN 201520560749U CN 204985330 U CN204985330 U CN 204985330U
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Abstract
The utility model provides a mechanical type damping thrust bearing, includes thrust axle, casing, the epaxial thrust ring that is equipped with of thrust has set gradually thrust block group balanced block group on, balanced block group down in the bilateral symmetry of thrust ring, the thrust block group, upward balanced block group, down balanced block group laminate arrangement supporting the mirror intra -annular, supporting mirror ring periphery is connected with the casing inner chamber, going up balanced block group and comprising a plurality of balancing pieces of going up, down balanced block group comprises a plurality of balancing pieces down, goes up under the balancing piece terminal surface and all is provided with the boss with balancing piece up end down, goes up the balancing piece and passes through the boss with balancing piece down and realize crisscross coincide relay concatenation, forms a complete ring, it includes balancing piece casing, shock -absorbing spring, guide bar, pretension preforming to go up the balancing piece, the shock -absorbing spring is placed in last balancing piece casing. The beneficial effect of the utility model: having increased screw exciting frequency and natural frequency of shafting and having compared, reduced axial vibration of shafting natural frequency, fine vibration isolation effect is played in the vibration to the shafting.
Description
Technical field
The utility model relates to boats and ships main shaft system thrust-bearing technical field, is specifically related to a kind of mechanical vibration reducing thrust-bearing.
Background technique
Thrust-bearing is the visual plant of marine propuision system, and it is to propeller cavitation passing shaft system forward and reverse direction moment of torsion, and the thrust produced by propeller cavitation and pull transfer are to hull, promote ship's navigation.Due to propeller cavitation rotate in uneven flow field time, there is certain alternating component in its thrust produced, form longitudinal pumping power, shaft produces certain excitation, and by thrust-bearing to hull transmission, causes ship hull vibration.
In domestic existing ship thrust-bearing, thrust transmits critical piece thrust axis, thrust block pad, thrust balancing mechanism, support mirror ring, housing, thrust-bearing pedestal etc., rigid contact is between thrust transferring elements, cause thrust-bearing longitudinal rigidity higher, without damping effect in propeller cavitation excited vibration transmittance process, make the longitudinal natural frequency of axle system higher simultaneously, during the running of axle system easily and propeller exciting force resonate, increase the vibration passing to hull.
Summary of the invention
The technical problems to be solved in the utility model is, in view of the foregoing defects the prior art has, provide a kind of mechanical vibration reducing thrust-bearing, increase propeller-excited vibration frequency and natural frequency of shafting ratio, reduce shafting longitudinal vibration natural frequency, good vibration isolation effect is played in shaft vibration.
The utility model for solving the problems of the technologies described above adopted technological scheme is:
A kind of mechanical vibration reducing thrust-bearing, comprise thrust axis, support mirror ring, housing, described thrust axis is provided with Thrust ring, thrust block pad group is disposed with in the bilateral symmetry of Thrust ring, upper equilibrium block group, lower equilibrium block group, described thrust block pad group, upper equilibrium block group, lower equilibrium block component layers is arranged in and supports in mirror ring, supporting mirror ring periphery is connected with housing cavity, described thrust block pad group to be uniformly distributed ringwise along shaft axis circumference by multiple thrust block pad and to form, described upper equilibrium block group is made up of multiple upper equilibrium block, lower equilibrium block group is made up of multiple lower equilibrium block, upper equilibrium block and lower equilibrium block are sector and are uniformly distributed along shaft axis circumference, upper equilibrium block lower end surface and lower equilibrium block upper-end surface are provided with boss, upper equilibrium block and lower equilibrium block realize staggered superimposed relay by boss and splice, form a complete annulus.
By such scheme, described thrust block pad, upper equilibrium block, lower equilibrium block quantity separately all have 6 or 8.
The seamed edge of described boss is arc surface.
By such scheme, described upper equilibrium block comprises equilibrium block housing, shock-absorbing spring, guide rod, pretension compressing tablet, described shock-absorbing spring is positioned in equilibrium block housing, and described pretension compressing tablet is connected with upper equilibrium block housing, and pretension compressing tablet compresses shock-absorbing spring by guide rod.
By such scheme, described shock-absorbing spring adopts cylindrically coiled spring or belleville spring, and the rigidity of shock-absorbing spring is 1 × 10
6n/m ~ 1 × 10
8n/m.
By such scheme, also comprise lateral oil seal, described lateral oil seal is arranged in housing both sides.
By such scheme, also comprise filler opening, return opening, described filler opening is arranged in below housing, and described return opening is arranged in above housing.
By such scheme, the bearing mounting base that housing is provided with, the attachment face of bearing mounting base adopt be horizontally disposed with and with thrust axis axle center same plane.
The utility model has following beneficial effect:
1. by the overlap joint of upper equilibrium block, lower equilibrium block, each thrust block pad load of transfer principle homogenizing of equilibrium block, lower equilibrium block each interblock power in utilization;
2. by the shock-absorbing spring that arranges in this device, reduce axle system longitudinal rigidity, the longitudinal natural frequency of axle system is reduced, stagger and the resonance of propeller cavitation, reduce the transmission of shafting longitudinal vibration;
3. shock-absorbing spring can adjust flexibly according to design requirement, makes stiffness reliability 1 × 10
6n/m ~ 1 × 10
8n/m, allows axle system longitudinal leap amount to be 1mm ~ 10mm;
4. the bearing base attachment face of this device adopts and is horizontally disposed with and mounting type conplane with axle center, this mounting type reduces the arm of force between center line of shafting and thrust-bearing attachment face, reduces hull structure extensional vibration and flexure vibrations coupling that propeller cavitation longitudinal pumping causes;
5. make this device increase propeller-excited vibration frequency and natural frequency of shafting ratio by above various measures, reduce shafting longitudinal vibration natural frequency, good vibration isolation effect is played in shaft vibration, and the present invention is specially adapted to boats and ships and dives device Propulsion Systems.
Accompanying drawing explanation
Fig. 1 is mechanical vibration reducing thrust bearing schematic diagram of the present utility model;
Fig. 2 is the left view of Fig. 1;
The expansion schematic diagram of Fig. 3 thrust block pad, upper equilibrium block, lower equilibrium block junction;
Balance block structure schematic diagram on Fig. 4;
Fig. 5 is the A-A sectional view of Fig. 4.
In figure, 1-upper shell, equilibrium block under 2-, 3-supports mirror ring, 4-astern thrust block, 5-return opening, 6-ahead thrust block, 7-lateral oil seal, 8-thrust axis, the upper equilibrium block housing of 9-lower shell body, 10-, 11-shock-absorbing spring, 12-guide rod, 13-filler opening, 14-pretension compressing tablet, 15-Thrust ring.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
With reference to shown in Fig. 1 ~ Fig. 5, mechanical vibration reducing thrust-bearing described in the utility model, comprise thrust axis 8, support mirror ring 3, upper shell 1, lower shell body 9, thrust axis 8 is provided with Thrust ring 15, ahead thrust block group is disposed with in the bilateral symmetry of Thrust ring 15, upper equilibrium block group, lower equilibrium block group and astern thrust block group, upper equilibrium block group, lower equilibrium block group, described ahead thrust block group, upper equilibrium block group, lower equilibrium block group and astern thrust block group, upper equilibrium block group, lower equilibrium block component layers is arranged in the support mirror ring 3 of Thrust ring 15 both sides, supporting mirror ring 3 periphery and upper shell 1, the inner chamber of lower shell body 9 connects, two faces of Thrust ring 15 are used respectively when positive car and reversing transmitting force, describe in detail for positive car end below, described ahead thrust block group to be uniformly distributed ringwise along shaft axis circumference by multiple ahead thrust block 6 and to form, described upper equilibrium block group is made up of multiple upper equilibrium block, lower equilibrium block group is made up of multiple lower equilibrium block 2, upper equilibrium block and lower equilibrium block 2 are sector and are uniformly distributed along shaft axis circumference, upper equilibrium block lower end surface and lower equilibrium block 2 upper-end surface are provided with boss, described boss seamed edge is through arc surface process, upper equilibrium block and lower equilibrium block 2 realize staggered superimposed relay by boss and splice, form a complete annulus, by upper equilibrium block, the overlap joint of lower equilibrium block 2, equilibrium block in utilization, the each thrust block pad load of transfer principle homogenizing of lower equilibrium block 2 each interblock power.
The respective quantity of described ahead thrust block 6, upper equilibrium block, lower equilibrium block 2 all has 6 or 8.
Described upper equilibrium block comprises equilibrium block housing 10, shock-absorbing spring 11, guide rod 12, pretension compressing tablet 14, described shock-absorbing spring 11 is positioned in equilibrium block housing 10, described pretension compressing tablet 14 is connected with upper equilibrium block housing 10, pretension compressing tablet 14 compresses shock-absorbing spring 11 by guide rod 12, by the shock-absorbing spring 11 arranged in this device, reduce axle system longitudinal rigidity, the longitudinal natural frequency of axle system is reduced, stagger and the resonance of propeller cavitation, reduce the transmission of shafting longitudinal vibration, shock-absorbing spring 11 can adjust flexibly according to design requirement in addition, make shock-absorbing spring 11 stiffness reliability 1 × 10
6n/m ~ 1 × 10
8n/m, allows axle system longitudinal leap amount to be 1mm ~ 10mm.
Also comprise lateral oil seal 7, described lateral oil seal 7 is arranged in upper shell 1 and lower shell body 9 both sides, for ensureing that lubricating oil is not revealed.
Also comprise filler opening 13, return opening 5, described filler opening 13 is arranged on lower shell body 9, and described return opening 5 is arranged on upper shell 1, for the lubricating oil input and output of this device bearing.
The bearing mounting base that described lower shell body 9 is provided with, the attachment face of bearing mounting base adopt be horizontally disposed with and with thrust axis 8 axle center same plane, this mounting type reduces the arm of force between center line of shafting and thrust-bearing attachment face, reduces hull structure extensional vibration and flexure vibrations coupling that propeller cavitation longitudinal pumping causes.
Make this device increase propeller-excited vibration frequency and natural frequency of shafting ratio by above various measures, reduce shafting longitudinal vibration natural frequency, good vibration isolation effect is played in shaft vibration, and the present invention is specially adapted to boats and ships and dives device Propulsion Systems.
Above-describedly be only preferred embodiment of the present utility model, certainly can not limit the interest field of the utility model with this, therefore according to the equivalence change that the utility model claim is done, still belong to protection domain of the present utility model.
Claims (8)
1. a mechanical vibration reducing thrust-bearing, comprise thrust axis, support mirror ring, housing, described thrust axis is provided with Thrust ring, thrust block pad group is disposed with in the bilateral symmetry of Thrust ring, upper equilibrium block group, lower equilibrium block group, described thrust block pad group, upper equilibrium block group, lower equilibrium block component layers is arranged in and supports in mirror ring, supporting mirror ring periphery is connected with housing cavity, it is characterized in that: described thrust block pad group to be uniformly distributed ringwise along shaft axis circumference by multiple thrust block pad and to form, described upper equilibrium block group is made up of multiple upper equilibrium block, lower equilibrium block group is made up of multiple lower equilibrium block, upper equilibrium block and lower equilibrium block are sector and are uniformly distributed along shaft axis circumference, upper equilibrium block lower end surface and lower equilibrium block upper-end surface are provided with boss, upper equilibrium block and lower equilibrium block realize staggered superimposed relay by boss and splice, form a complete annulus.
2. mechanical vibration reducing thrust-bearing according to claim 1, is characterized in that: described thrust block pad, upper equilibrium block, lower equilibrium block quantity separately all have 6 or 8.
3. mechanical vibration reducing thrust-bearing according to claim 1, is characterized in that: the seamed edge of described boss is arc surface.
4. mechanical vibration reducing thrust-bearing according to claim 1, it is characterized in that: described upper equilibrium block comprises equilibrium block housing, shock-absorbing spring, guide rod, pretension compressing tablet, described shock-absorbing spring is positioned in equilibrium block housing, described pretension compressing tablet is connected with upper equilibrium block housing, and pretension compressing tablet compresses shock-absorbing spring by guide rod.
5. mechanical vibration reducing thrust-bearing according to claim 4, is characterized in that: described shock-absorbing spring adopts cylindrically coiled spring or belleville spring, and the rigidity of shock-absorbing spring is 1 × 10
6n/m ~ 1 × 10
8n/m.
6. mechanical vibration reducing thrust-bearing according to claim 1, is characterized in that: also comprise lateral oil seal, and described lateral oil seal is arranged in housing both sides.
7. mechanical vibration reducing thrust-bearing according to claim 1, it is characterized in that: also comprise filler opening, return opening, described filler opening is arranged in below housing, and described return opening is arranged in above housing.
8. mechanical vibration reducing thrust-bearing according to claim 1, is characterized in that: the bearing mounting base that housing is provided with, the attachment face of bearing mounting base adopt be horizontally disposed with and with thrust axis axle center same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520560749.1U CN204985330U (en) | 2015-07-29 | 2015-07-29 | Mechanical type damping thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520560749.1U CN204985330U (en) | 2015-07-29 | 2015-07-29 | Mechanical type damping thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985330U true CN204985330U (en) | 2016-01-20 |
Family
ID=55119703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520560749.1U Active CN204985330U (en) | 2015-07-29 | 2015-07-29 | Mechanical type damping thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985330U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561503A (en) * | 2018-04-12 | 2018-09-21 | 上海交通大学 | The unit of dynamic absorber containing Negative stiffness spring and thrust bearing |
| CN109281926A (en) * | 2018-11-13 | 2019-01-29 | 中国舰船研究设计中心 | A kind of vibration damping thrust bearing with hydrostatic thrust Self-balancing |
| CN111442051A (en) * | 2020-04-24 | 2020-07-24 | 中国舰船研究设计中心 | Active thrust balance type shafting longitudinal vibration damper |
| CN112697020A (en) * | 2020-11-24 | 2021-04-23 | 沪东中华造船(集团)有限公司 | Method for measuring gap of thrust ball bearing of marine diesel engine |
| CN113335488A (en) * | 2021-06-25 | 2021-09-03 | 中国舰船研究设计中心 | Two-stage longitudinal vibration isolation shafting |
| CN113386939A (en) * | 2021-06-24 | 2021-09-14 | 中国舰船研究设计中心 | Thrust bearing device with compact structure |
| CN114802686A (en) * | 2022-04-28 | 2022-07-29 | 中国舰船研究设计中心 | Disc spring type integrated vibration damping thrust bearing |
| CN114810883A (en) * | 2022-04-28 | 2022-07-29 | 中国舰船研究设计中心 | Thrust bearing vibration damping structure with double springs supported in parallel on two sides |
-
2015
- 2015-07-29 CN CN201520560749.1U patent/CN204985330U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561503A (en) * | 2018-04-12 | 2018-09-21 | 上海交通大学 | The unit of dynamic absorber containing Negative stiffness spring and thrust bearing |
| CN109281926A (en) * | 2018-11-13 | 2019-01-29 | 中国舰船研究设计中心 | A kind of vibration damping thrust bearing with hydrostatic thrust Self-balancing |
| CN111442051A (en) * | 2020-04-24 | 2020-07-24 | 中国舰船研究设计中心 | Active thrust balance type shafting longitudinal vibration damper |
| CN112697020A (en) * | 2020-11-24 | 2021-04-23 | 沪东中华造船(集团)有限公司 | Method for measuring gap of thrust ball bearing of marine diesel engine |
| CN113386939A (en) * | 2021-06-24 | 2021-09-14 | 中国舰船研究设计中心 | Thrust bearing device with compact structure |
| CN113386939B (en) * | 2021-06-24 | 2022-06-28 | 中国舰船研究设计中心 | Thrust bearing device with compact structure |
| CN113335488A (en) * | 2021-06-25 | 2021-09-03 | 中国舰船研究设计中心 | Two-stage longitudinal vibration isolation shafting |
| CN114802686A (en) * | 2022-04-28 | 2022-07-29 | 中国舰船研究设计中心 | Disc spring type integrated vibration damping thrust bearing |
| CN114810883A (en) * | 2022-04-28 | 2022-07-29 | 中国舰船研究设计中心 | Thrust bearing vibration damping structure with double springs supported in parallel on two sides |
| CN114810883B (en) * | 2022-04-28 | 2024-04-26 | 中国舰船研究设计中心 | Thrust bearing vibration reduction structure with double springs and double-side parallel support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |