CN111152883B - Up-down symmetrical thrust bearing base for small water plane catamaran - Google Patents
Up-down symmetrical thrust bearing base for small water plane catamaran Download PDFInfo
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- CN111152883B CN111152883B CN202010020643.8A CN202010020643A CN111152883B CN 111152883 B CN111152883 B CN 111152883B CN 202010020643 A CN202010020643 A CN 202010020643A CN 111152883 B CN111152883 B CN 111152883B
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- base
- thrust bearing
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- down symmetrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0081—Vibration isolation or damping elements or arrangements, e.g. elastic support of deck-houses
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to an up-down symmetrical thrust bearing base for a small water plane twin-hull ship, which comprises an upper base and a lower base which are oppositely arranged at intervals, wherein a thrust bearing is arranged in the interval between the upper base and the lower base, two sides of the outer wall of the thrust bearing are outwards extended with base feet, and the base feet are connected with the upper base or the lower base through vibration isolators; the top of the upper base is provided with an upper platform, two sides of a space between the upper base and the lower base are provided with a shell, and the upper end and the lower end of the shell are fixedly connected with the upper base and the lower base respectively; the shell is of an arc convex structure, and a plurality of reinforcing ribs are fixedly arranged on the inner wall surface of the shell. The method is used for static thrust transmission and dynamic excitation force control of the small-waterplane-area catamaran propulsion shafting, and provides powerful technical support for radiation noise control of the small-waterplane-area catamaran.
Description
Technical Field
The invention relates to the technical field of bearing bases, in particular to an up-and-down symmetrical thrust bearing base for a small-waterplane-area catamaran.
Background
A small waterplane area catamaran is also called a semi-submersible catamaran. The small waterplane area catamaran is a ship which has a small waterline area and is formed by connecting two submersibles, an overwater box body and two streamline struts in the middle. The ship has the greatest characteristic of good wave resistance, and particularly has the characteristic of obvious high navigational speed and high wave.
The small waterplane area catamaran with the double-submerged body structure form and the good wave resistance is widely applied to the fields of scientific investigation, noise measurement and the like. The middle of the small waterplane area catamaran can be designed into a larger moon pool, which is beneficial to the distribution and recovery of large-scale measuring equipment. In the application process of scientific investigation and noise measurement, the radiation noise of the small waterplane area catamaran has obvious influence on the measurement capability, signal processing and the like of equipment, so that the small waterplane area catamaran is required to be strictly acoustically designed, and the radiation noise is effectively controlled. The radiation noise caused by the small water plane catamaran propulsion shafting is one of main components in the total noise, and the thrust bearing base is the action point of the propulsion shafting for longitudinally exciting the ship body, so the acoustic performance of the thrust bearing base is particularly important. In the prior art, a thrust bearing base is generally installed on one side, additional bending moment excitation is easily generated, the impedance of the base is small, and large vibration noise is easily caused.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides an up-and-down symmetrical thrust bearing base for a small waterplane area catamaran, which is reasonable in structure, so that the additional bending moment excitation of a thrust bearing is eliminated, and larger impedance is provided, so that the radiation noise caused by the fact that a longitudinal dynamic excitation force of a propulsion shaft system excites a ship body through the thrust bearing base is controlled, and a technical support is provided for controlling the radiation noise of the small waterplane area catamaran.
The technical scheme adopted by the invention is as follows:
the up-down symmetrical thrust bearing base for the small-waterplane-area catamaran comprises an upper base and a lower base which are oppositely arranged at intervals, thrust bearings are installed in the intervals between the upper base and the lower base, footing extend outwards from two sides of the outer wall of each thrust bearing, and the footings are connected with the upper base or the lower base through vibration isolators.
As a further improvement of the above technical solution:
the upper platform is installed at the top of the upper base, the shell is installed on two sides of the upper base and the lower base at intervals, and the upper end and the lower end of the shell are fixedly connected with the upper base and the lower base respectively.
The shell is of an arc-shaped convex structure, and a plurality of reinforcing ribs are fixedly arranged on the inner wall surface of the shell.
The structure of the upper base is as follows: the bending mechanism comprises upper webs arranged in parallel, wherein a plurality of upper toggle plates arranged at intervals are jointly installed on the two upper webs, the upper toggle plates are perpendicular to the upper webs, two ends of each upper toggle plate penetrate through the upper webs, the end of each upper toggle plate positioned on the outer side of the corresponding upper web is provided with a first bending structure, and a first groove is formed below the upper toggle plates positioned between the two upper webs in a penetrating manner; an upper side plate is installed on the front end face of the upper web plate, and an upper panel is installed on the bottom face of the upper web plate.
The included angle between the first bending structure and the upper web plate is 30-40 degrees; the included angle between two side walls of the groove is 50-65 degrees.
And a transition plate is arranged below the upper panel, and the bottom of the transition plate is connected with a footing of the thrust bearing through a vibration isolator.
The structure of lower base does: the lower web plates are arranged in parallel, a plurality of lower toggle plates arranged at intervals are installed on the two lower web plates together, the lower toggle plates are perpendicular to the lower web plates, two ends of each lower toggle plate penetrate through the lower web plates, the end heads of the lower toggle plates positioned on the outer sides of the lower web plates are arranged into concave bending structures II, and grooves II are formed above the lower toggle plates positioned between the two lower web plates in a penetrating mode; the front end face of the lower web plate is provided with a lower side plate, and the top surface of the lower web plate is provided with a lower panel.
The lower side plate is of an inwards concave arc structure.
The both sides of thrust bearing outer wall all outwards extend and have the footing of longitudinal symmetry, and two footing that are located the top all link to each other with the upper base through the isolator, and two footing that are located the below all link to each other with lower base through the isolator.
The longitudinal rigidity of the upper base and the longitudinal rigidity of the lower base are consistent, and damping layers are laid on the surfaces of the upper base and the lower base.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, and the upper base and the lower base which are oppositely arranged up and down jointly form the base of the thrust bearing, thereby transmitting thrust more uniformly and avoiding the excitation of the propulsion system to the additional bending moment of the ship body; and provides a large mechanical input impedance to control the vibration response; provides powerful technical support for controlling the radiation noise of the small waterplane area catamaran.
The invention also comprises the following advantages:
vibration isolators are respectively arranged between the upper base and the lower base and between the footing of the thrust bearing, and damping layers are respectively laid on the surfaces of the upper base and the lower base, so that the vibration noise caused by a small-waterplane-area twin-hull ship shafting can be effectively controlled, the noise of the small-waterplane-area twin-hull ship is reduced, and the measurement level of the noise of the ship is improved;
in order to facilitate the maintenance of the thrust bearing between the upper base and the lower base, a transition plate is arranged, and a maintenance small hole is formed in the transition plate and used for maintaining a pressure gauge and a thermometer on the thrust bearing body.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the upper base of the present invention.
FIG. 3 is a schematic structural diagram of a lower base according to the present invention.
Wherein: 1. an upper base; 2. an upper platform; 3. a transition plate; 4. a thrust bearing; 5. a vibration isolator; 6. a housing; 7. reinforcing ribs; 8. a lower base; 9. a footing; 11. an upper web; 12. an upper toggle plate; 13. an upper side plate; 14. an upper panel; 121. a first bending structure; 122. a first groove; 81. a lower web; 82. a lower toggle plate; 83. a lower side plate; 84. a lower panel; 821. a second bending structure; 822. and a second groove.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the up-down symmetrical thrust bearing base for the small waterline plane catamaran of the present embodiment includes an upper base 1 and a lower base 8 which are oppositely arranged at an interval, a thrust bearing 4 is installed in the interval between the upper base 1 and the lower base 8, two sides of the outer wall of the thrust bearing 4 extend outwards to form a footing 9, and the footing 9 is connected with the upper base 1 or the lower base 8 through a vibration isolator 5; the vibration isolator 5 is used for further controlling the vibration noise of the ship body caused by the shafting exciting the upper base 1 and the lower base 8 through the thrust bearing 4.
The vibration isolator 5 has small vertical rigidity so as to control vertical vibration transmission; the longitudinal rigidity is slightly larger, so that the function of transmitting static thrust is achieved, and meanwhile, the longitudinal vibration transmission is controlled.
An upper platform 2 is installed at the top of the upper base 1, a shell 6 is installed on two sides of the upper base 1 and the lower base 8 at intervals, and the upper end and the lower end of the shell 6 are fixedly connected with the upper base 1 and the lower base 8 respectively.
A platform structure is usually arranged in the underwater submerged body of the small waterplane area catamaran, and the upper platform 2 is the platform structure; the shell 6 is the shell of the small waterplane area catamaran; the height of the upper base 1 is lower than that of the lower base 8.
The shell 6 is of an arc convex structure, and a plurality of reinforcing ribs 7 are fixedly arranged on the inner wall surface of the shell 6.
As shown in fig. 2, the upper base 1 has the following structure: the structure comprises upper webs 11 which are arranged in parallel, a plurality of upper toggle plates 12 which are arranged at intervals are jointly installed on the two upper webs 11, the upper toggle plates 12 are perpendicular to the upper webs 11, two ends of each upper toggle plate 12 penetrate through the upper webs 11, the end of each upper toggle plate 12 positioned on the outer side of each upper web 11 is provided with a first bending structure 121, and a first groove 122 is formed below the upper toggle plates 12 positioned between the two upper webs 11 in a penetrating manner; an upper side plate 13 is arranged on the front end surface of the upper web plate 11, and an upper panel 14 is arranged on the bottom surface of the upper web plate 11.
An included angle alpha between the first bending structure 121 and the upper web 11 is 30-40 degrees; an included angle beta between two side walls of the first groove 122 is 50-65 degrees.
A transition plate 3 is arranged below the upper panel 14, and the bottom of the transition plate 3 is connected with a footing 9 of the thrust bearing 4 through a vibration isolator 5; in order to facilitate the maintenance of the thrust bearing 4 between the upper base 1 and the lower base 8, a transition plate 3 is arranged, and a maintenance small hole is formed in the transition plate 3 and is used for maintaining a pressure gauge and a thermometer on the thrust bearing 4 body; cushion blocks can be arranged between the transition plate 3 and the upper panel 14 of the upper base 1 according to actual requirements.
As shown in fig. 3, the lower base 8 has a structure of: the structure comprises lower webs 81 arranged in parallel, a plurality of lower toggle plates 82 arranged at intervals are jointly installed on the two lower webs 81, the lower toggle plates 82 are perpendicular to the lower webs 81, two ends of each lower toggle plate 82 penetrate through the corresponding lower web 81, the end of each lower toggle plate 82 located on the outer side of the corresponding lower web 81 is provided with a second concave bending structure 821, and a second groove 822 is formed above the lower toggle plates 82 located between the two lower webs 81 in a penetrating mode; the lower web 81 has a lower plate 83 attached to the front end surface thereof, and a lower plate 84 attached to the top surface of the lower web 81.
The lower side plate 83 is of an inwardly concave arc structure.
The overall structural layout of the upper base 1 and the lower base 8 is the same, so that the upper base and the lower base are arranged up and down symmetrically relative to the thrust bearing 4, and the details and the sizes of the upper base 1 and the lower base 8 are different according to actual requirements.
As shown in fig. 1, an angle α 1 between the first bending structure 121 of the upper base 1 and the upper web 11 is 35 °, and an angle β 1 between two sidewalls of the first groove 122 is 60 °; an included angle α 2 between the second bending structure 821 of the lower base 8 and the lower web 81 is 30 °, and an included angle β 2 between two sidewalls of the second groove 822 is 50 °.
The both sides of 4 outer walls of thrust bearing all outwards extend and have the footing 9 of longitudinal symmetry, and two footing 9 that are located the top all link to each other with upper base 1 through isolator 5, and two footing 9 that are located the below all link to each other with lower base 8 through isolator 5.
The longitudinal rigidity of the upper base 1 is consistent with that of the lower base 8, and damping layers are laid on the surfaces of the upper base 1 and the lower base 8; the upper base 1 and the lower base 8 which are symmetrical up and down can transmit thrust more stably without generating additional bending moment excitation, and simultaneously can provide larger input impedance and reduce the hull structure response caused by propulsion excitation; the damping layer further controls the ship body vibration noise caused by shafting excitation.
When the device is installed, the contact surfaces of the upper panel 14 of the upper base 1, the upper panel and the lower panel of the transition plate 3 and the lower panel 84 of the lower base 8 are flat and smooth, the contact surfaces are inspected by color oil, contact points are not less than 3 points per 25mm area, and the contact points are inspected by a thickness gauge of 0.05mm in a free state and cannot be inserted.
The invention has simple and ingenious structure, and the thrust bearing is installed together through the vibration isolator by the upper base and the lower base which are symmetrically arranged, thereby effectively controlling the static thrust transmission and the dynamic excitation force of the propulsion shafting and providing powerful technical support for the radiation noise control of the small-waterplane area catamaran.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (9)
1. The utility model provides a little waterline face binary ship is with symmetry formula thrust bearing base from top to bottom which characterized in that: the device comprises an upper base (1) and a lower base (8) which are arranged at an interval, wherein a thrust bearing (4) is arranged in the interval between the upper base (1) and the lower base (8), two sides of the outer wall of the thrust bearing (4) extend outwards to form a footing (9), and the footing (9) is connected with the upper base (1) or the lower base (8) through a vibration isolator (5);
upper platform (2) are installed at upper base (1) top, casing (6) are installed to upper base (1) and lower base (8) both sides at interval, the upper end and the lower extreme of casing (6) respectively with upper base (1) and lower base (8) rigid coupling.
2. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 1, wherein: the shell (6) is of an arc-shaped convex structure, and a plurality of reinforcing ribs (7) are fixedly arranged on the inner wall surface of the shell (6).
3. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 1, wherein: the upper base (1) is structurally characterized in that: the bending structure comprises upper webs (11) which are arranged in parallel, a plurality of upper toggle plates (12) which are arranged at intervals are installed on the two upper webs (11) together, the upper toggle plates (12) are perpendicular to the upper webs (11), two ends of each upper toggle plate (12) penetrate through the upper webs (11), the end of each upper toggle plate (12) positioned on the outer side of each upper web (11) is provided with a bending structure I (121), and a groove I (122) is formed below the plurality of upper toggle plates (12) positioned between the two upper webs (11) in a penetrating mode; an upper side plate (13) is installed on the front end face of the upper web plate (11), and an upper panel (14) is installed on the bottom face of the upper web plate (11).
4. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 3, wherein: an included angle between the first bending structure (121) and the upper web plate (11) is 30-40 degrees; an included angle between two side walls of the first groove (122) is 50-65 degrees.
5. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 3, wherein: the transition plate (3) is installed below the upper panel (14), and the bottom of the transition plate (3) is connected with a footing (9) of the thrust bearing (4) through the vibration isolator (5).
6. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 1, wherein: the structure of the lower base (8) is as follows: the bending device comprises lower webs (81) which are arranged in parallel, a plurality of lower toggle plates (82) which are arranged at intervals are installed on the two lower webs (81) together, the lower toggle plates (82) are perpendicular to the lower webs (81), two ends of each lower toggle plate (82) penetrate through the corresponding lower web (81), the end of each lower toggle plate (82) located on the outer side of the corresponding lower web (81) is provided with a second inwards-concave bending structure (821), and a second groove (822) is formed above the lower toggle plates (82) located between the two lower webs (81) in a penetrating mode; lower lateral plate (83) are installed to lower web (81) preceding terminal surface, lower panel (84) are installed to lower web (81) top surface.
7. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 6, wherein: the lower side plate (83) is of an inwards concave arc structure.
8. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 1, wherein: both sides of thrust bearing (4) outer wall all outwards extend and have footing (9) of longitudinal symmetry, and two footing (9) that are located the top all link to each other with upper base (1) through isolator (5), and two footing (9) that are located the below all link to each other with lower base (8) through isolator (5).
9. The up-down symmetrical thrust bearing pedestal for the small waterplane area catamaran as claimed in claim 1, wherein: the longitudinal rigidity of the upper base (1) is consistent with that of the lower base (8), and damping layers are laid on the surfaces of the upper base (1) and the lower base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020643.8A CN111152883B (en) | 2020-01-09 | 2020-01-09 | Up-down symmetrical thrust bearing base for small water plane catamaran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020643.8A CN111152883B (en) | 2020-01-09 | 2020-01-09 | Up-down symmetrical thrust bearing base for small water plane catamaran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111152883A CN111152883A (en) | 2020-05-15 |
| CN111152883B true CN111152883B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010020643.8A Active CN111152883B (en) | 2020-01-09 | 2020-01-09 | Up-down symmetrical thrust bearing base for small water plane catamaran |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1020301A1 (en) * | 1981-09-24 | 1983-05-30 | Предприятие П/Я Р-6397 | Ship rudder stock lower bearing assembly |
| EP1239353A3 (en) * | 2001-03-09 | 2004-12-15 | Mitsubishi Heavy Industries, Ltd. | Rotation stabilizing device in a microgravitational rotating apparatus |
| CN102072276B (en) * | 2010-12-30 | 2012-10-31 | 上海交通大学 | Electromagnetic active control device for longitudinal vibration of marine shafting |
| CN106314675A (en) * | 2016-09-22 | 2017-01-11 | 何胜 | Water-sport semi-submerged ship |
| CN106494597B (en) * | 2016-10-25 | 2018-03-27 | 华中科技大学 | A kind of ships and light boats Propulsion Systems extensional vibration control device |
| CN106958620B (en) * | 2017-02-09 | 2019-01-25 | 沈阳工业大学 | Adjustable two-stage impact-resistant isolation device |
| CN107345856A (en) * | 2017-09-07 | 2017-11-14 | 中国船舶重工集团公司第七〇九研究所 | A kind of low dynamic stiffness for rotary axis longitudinally loads exciting device |
| CN107891962A (en) * | 2017-11-13 | 2018-04-10 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of low noise thrust bearing device for ship |
| CN108313252B (en) * | 2018-03-27 | 2024-05-03 | 福州大学 | Vibration reduction base based on metal rubber and working method |
| CN109159881B (en) * | 2018-10-29 | 2019-09-27 | 集美大学 | A kind of ship thrust bearing device with low frequency vibration isolation effect |
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2020
- 2020-01-09 CN CN202010020643.8A patent/CN111152883B/en active Active
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