CN212297279U - Bottom mounting intermediate bearing of ship main propulsion shafting - Google Patents
Bottom mounting intermediate bearing of ship main propulsion shafting Download PDFInfo
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- CN212297279U CN212297279U CN202021553036.XU CN202021553036U CN212297279U CN 212297279 U CN212297279 U CN 212297279U CN 202021553036 U CN202021553036 U CN 202021553036U CN 212297279 U CN212297279 U CN 212297279U
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Abstract
The utility model discloses a middle bearing installed at the bottom of a main propulsion shafting of a ship, which comprises a bearing seat and a bearing cover which are matched with each other; the bearing seat mounting plate is arranged at the bottom of the bearing seat, and a jacking bolt is arranged on the mounting plate; the bearing block and the bearing cover are internally provided with a bearing bush, and the matching surfaces of the bearing bush, the bearing block and the bearing cover are spherical surfaces; the left end of the bearing bush is provided with an oil slinger; at least two annular seal grooves are formed in the inner surfaces of the two end surfaces of the bearing seat and the bearing cover, and oil seals are arranged on the outer sides of the annular seal grooves; a surrounding lubricating oil cavity is arranged in the bearing seat, and a sealing plate is arranged at a channel outlet of the lubricating oil cavity; a cooling coil is arranged on the left side of the lubricating cavity; the self-aligning bearing bush has the advantages that the bearing bush can rotate around the spherical surface in the shell to realize self-aligning, so that the bearing bush is effectively suitable for swinging and jolting generated in the running process of a journal; the bearing seat is simpler to process and manufacture, and the manufacturing cost is reduced; and the cooling effect is good.
Description
Technical Field
The utility model relates to a field of bearing for boats and ships especially relates to a bottom installation intermediate bearing of boats and ships main propulsion shafting.
Background
The middle bearing is used as a bearing system supporting device of a main propulsion system of a ship, a sliding middle bearing of a ship shaft system in the prior art has the advantages that the matching surfaces of a bearing bush and a shell are matched by cylindrical surfaces, when the shaft system is inclined and deflected during operation, the bearing bush cannot be synchronously adjusted correspondingly along with the shaft system, the central line of the bearing bush is not concentric with the central line of the shaft system, and the bearing bush and the shaft system have certain angles, so that the lower bearing bush and the shaft are in local contact, the lower bearing bush is in contact with one end face of the bearing bush and is not in contact with the other end face far away from the 1/2 center of the end face, the local contact stress at the end part of the bearing bush exceeds allowable specific pressure, local abnormal abrasion is caused, the temperature of the bearing bush is. In the prior art, an oil slide cavity and a cooling water cavity are arranged in a bearing seat, so that the molding process is complex, the one-step molding rate of the bearing seat is low, and the manufacturing cost is high; therefore, there is a need for improvements in the prior art intermediate bearing structure to overcome the above-mentioned problems.
Disclosure of Invention
The utility model aims at providing a middle bearing installed at the bottom of a main propulsion shafting of a ship, which has reasonable structure, reliable use, reduced failure probability and reduced use and maintenance cost in the whole life cycle of the ship; the manufacturing process is simplified, and the manufacturing cost is reduced; the installation and the use of a real ship are convenient; the technical problem is solved.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: a middle bearing is arranged at the bottom of a main propulsion shafting of a ship and comprises a bearing seat and a bearing cover which are matched with each other; the bearing seat mounting plate is arranged at the bottom of the bearing seat, and a jacking bolt is arranged on the mounting plate; bearing bushes are arranged inside the bearing block and the bearing cover, and matching surfaces of the bearing bushes, the bearing block and the bearing cover are spherical surfaces; the bearing bush can rotate around the spherical surface in the shell; self-aligning is realized, so that the bearing bush is effectively suitable for swinging and jolting vibration generated in the running process of the shaft neck; the maximum aligning angle reaches 0.245 degrees and is about 15'; an oil slinger is arranged at the left end of the bearing bush, and an oil filling hopper is arranged above the oil slinger; the inner surfaces of two end surfaces of the bearing seat and the bearing cover are arranged in a step shape and are provided with at least two annular seal grooves, oil seals are arranged on the outer sides of the annular seal grooves, and the two end surfaces of the bearing seat and the bearing cover are connected and fixed through pressing covers and tightly press the oil seals; a surrounding lubricating oil cavity is arranged in the bearing seat, channels are arranged on two sides of the lubricating oil cavity, and a sealing plate is arranged at an outlet of each channel; and a cooling coil is arranged on the left side of the lubricating oil cavity, and a cooling water inlet and a cooling water outlet of the cooling coil are connected through the sealing plate and arranged outside the sealing plate.
Preferably: the bearing bush is a split bearing bush and comprises an upper bearing bush and a lower bearing bush, split surfaces of the upper bearing bush and the lower bearing bush are matched through scraping, are positioned through an internal thread taper pin, and are connected and fastened through an inner hexagon screw.
Preferably: the bearing cover is also provided with symmetrically distributed dipsticks.
Preferably: the bearing seat is matched with the joint surface of the bearing cover through scraping, an oil groove is arranged on the upper end surface of the bearing seat, and liquid sealant which is not sticky is arranged between the joint surfaces of the bearing seat and the bearing cover.
Preferably: the sealing plate is rectangular, and a release bolt is arranged on the sealing plate b.
The utility model has the advantages that; a bottom-mounted intermediate bearing of a main propulsion shafting of a ship is compared with a traditional structure: the bearing bush can rotate around the spherical surface in the shell to realize self-aligning, so that the bearing bush is effectively suitable for swinging and jolting generated in the running process of the journal; the maximum aligning angle reaches 0.245 degrees; the bearing bush has good use stability, is not easy to cause abrasion, and is safe and reliable; only the lubricating cavity is arranged in the bearing seat, so that the processing and the manufacturing are simpler, the one-step forming rate of the bearing seat is improved, and the manufacturing cost is reduced; and the cooling effect is good; the utility model discloses an installation mode is the bottom installation, and simple structure is reasonable, excellent in use effect, the stable performance.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a cross-sectional view taken along line a-a of fig. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view B-B, C-C of FIG. 1 in accordance with the present invention;
in the figure: 1. a bearing seat; 1-1, mounting a plate; 1-2, jacking a bolt; 2. a bearing cap; 3. bearing bushes; 4. an oil slinger; 5. an oil filling hopper; 6. a sealing groove; 7. oil sealing; 8. a gland; 9. a channel; 10. closing the plate; 10-1, sealing plate a; 10-2, sealing plate b; 11. a taper pin; 12. a socket head cap screw; 13. a dipstick; 14. an oil sump; 15. an oil gallery; 16. a bleeder bolt; 17. and cooling the coil.
Detailed Description
In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments;
in the drawings: a middle bearing is arranged at the bottom of a main propulsion shafting of a ship and comprises a bearing seat 1 and a bearing cover 2 which are matched with each other; the method is characterized in that: the mounting plate 1-1 of the bearing seat 1 is arranged at the bottom of the bearing seat 1 in a bottom mounting mode, and the mounting plate 1-1 is provided with a jacking bolt 1-2; when the centering device is arranged on a ship mounting base, the bearing can be conveniently adjusted during centering, the centering adjustment time is shortened, and the workload is reduced. The bearing bush 3 is arranged in the bearing seat 1 and the bearing cover 2, and the matching surfaces of the bearing bush 3, the bearing seat 1 and the bearing cover 2 are spherical surfaces; the bearing bush can rotate around the spherical surface in the shell to perform self-aligning, the angle of the self-aligning is less than or equal to 0.245 degrees (approximately equal to 15'), when the shaft system rotates to incline and deflect, the bearing bush can be synchronously adjusted correspondingly along with the shaft system, the problem of local contact between the lower bearing bush and the shaft is solved, the local abnormal wear phenomenon is prevented, the product reliability is improved, and safety accidents are avoided. An oil slinger 4 is arranged at the left end of the bearing bush 3, and an oil filling hopper 5 is arranged above the oil slinger 4; the inner surfaces of the two end faces of the bearing seat 1 and the bearing cover 2 are stepped, at least two annular seal grooves 6 are arranged, an oil seal 7 is arranged on the outer side of each annular seal groove 6, so that lubricating oil in the labyrinth seal grooves flows back into the bearing seat, and the lubricating oil is effectively prevented from leaking. The two end faces of the bearing seat 1 and the bearing cover 2 are connected and fixed through fastening bolts on the gland 8 and tightly press the oil seal 7; a surrounding lubricating oil cavity 15 is arranged in the bearing seat 1, channels 9 are arranged on two sides of the lubricating oil cavity 15, and a sealing plate 10 is arranged at an outlet of each channel 9; the cooling coil 17 is arranged on the left side of the lubricating oil cavity 15, and the cooling coil 17 is arranged inside the lubricating oil cavity 15, so that the cooling effect is good; the cooling water inlet and the cooling water outlet connecting pipe pass through the sealing plate a10-1 and are arranged outside the sealing plate a10-1, and the operation is convenient. The sealing plate 10 is rectangular, and the sealing plate b10-2 is provided with a release bolt, so that the use is safe and reliable.
The bearing bush 3 is a split bearing bush and comprises an upper bearing bush 3-1 and a lower bearing bush 3-2, split surfaces of the upper bearing bush 3-1 and the lower bearing bush 3-2 are matched through scraping, positioned through an internal thread taper pin 11 and connected and fastened through an inner hexagon screw 12. The drawing device has the advantages that the dimensional accuracy, the roundness, the cylindricity, the coaxiality and other shape and position accuracy are guaranteed to meet the requirements of drawings, the bearing bush does not need to be matched in a brushing mode, the process is simplified, the production cost is reduced, the product quality is improved, and the labor intensity of workers is reduced.
The bearing cover 2 is also provided with symmetrically distributed dipsticks 13, and the number of the dipstick ports is two; when the real ship is used, one of the connectors is used at will, and the other connector is plugged by a screw plug. In particular, in the case of a double-shaft or multi-shaft ship, the possibility of mismounting is prevented because the bearing structure is not divided into two or more parts.
The bearing seat 1 is matched with the joint surface of the bearing cover 2 through scraping, the upper end surface of the bearing seat 1 is provided with an oil groove 14, and liquid sealant which is not sticky is arranged between the joint surfaces of the bearing seat 1 and the bearing cover 2, so that lubricating oil can be effectively prevented from seeping from the joint surface.
The utility model discloses a concrete implementation: the material of the bush back is 20# forged steel, and the material of the bush liner is Babbitt alloy with the trade mark of ZChSnSb11Cu6Cd 1; the tile lining and the tile back have good combination, and the strength and the hardness of the ZChSnSb11Cu6Cd1 are higher than those of the ZChSnSb11Cu6 of the same tin-based bearing alloy, so that the physical properties are better. The cooling coil is made of a copper-nickel alloy pipe with the material brand of B10-B30, and has good seawater corrosion resistance; the allowable specific pressure of the bearing is less than or equal to 2.0MPa, the maximum specific pressure is 2.0MPa, and the bearing has the advantage of higher bearing capacity.
The lower bearing bush of the embodiment is arranged on the bearing block, and when the real ship is arranged, in order to prevent circumferential rotation between the lower bearing bush and the bearing block, a positioning screw is adopted to press the lower bearing bush for centering; after centering is completed, the positioning screw is removed to perform subsequent installation work. The temperature sensor is positioned on the bearing seat, the temperature sensor adopts a telescopic structure and is horizontally installed, the two installation interfaces are symmetrically arranged on the left and right, when the real ship is used, one interface is randomly used, and the other interface is plugged by a screw plug; the thermometer for measuring the temperature of the lubricating oil on site is arranged on the thermometer support, and the use is convenient.
The utility model discloses stable in structure, excellent in use effect, long service life, the axle bush can be rotatory around the interior sphere of casing, realizes from the aligning, makes swing, top that the axle bush adapts to the axle journal operation in-process effectively and produces shake. The bearing bush has good use stability, is not easy to cause abrasion, and is safe and reliable; only the lubricating cavity is arranged in the bearing seat, so that the processing and the manufacturing are simpler, the one-step forming rate of the bearing seat is improved, and the manufacturing cost is reduced; and the cooling effect is good; the utility model discloses an installation mode is the bottom installation, and simple structure is reasonable, excellent in use effect, the stable performance.
The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.
Claims (5)
1. A middle bearing is arranged at the bottom of a main propulsion shafting of a ship and comprises a bearing seat (1) and a bearing cover (2) which are matched with each other; the method is characterized in that: the mounting plate (1-1) of the bearing seat (1) is arranged at the bottom of the bearing seat (1), and the jacking bolt (1-2) is arranged on the mounting plate (1-1); the bearing block (1) and the bearing cover (2) are internally provided with a bearing bush (3), and the matching surfaces of the bearing bush (3) and the bearing block (1) as well as the bearing cover (2) are spherical surfaces; an oil slinger (4) is arranged at the left end of the bearing bush (3), and an oil filling hopper (5) is arranged above the oil slinger (4); the inner surfaces of two end surfaces of the bearing seat (1) and the bearing cover (2) are arranged in a step shape, at least two annular seal grooves (6) are arranged, an oil seal (7) is arranged on the outer side of each annular seal groove (6), and the two end surfaces of the bearing seat (1) and the bearing cover (2) are connected and fixed through fastening bolts on a gland (8) and compress the oil seal (7); a surrounding lubricating oil cavity (15) is arranged in the bearing seat (1), channels (9) are arranged on two sides of the lubricating oil cavity (15), and a sealing plate (10) is arranged at an outlet of each channel (9); a cooling coil (17) is arranged on the left side of the lubricating oil cavity (15), the cooling coil (17) is arranged inside the lubricating oil cavity (15), and a cooling water inlet and a cooling water outlet connecting pipe penetrate through the sealing plate a (10-1) and are arranged outside the sealing plate a (10-1).
2. The bottom-mounted intermediate bearing of a main propulsion shafting of a marine vessel as claimed in claim 1, wherein: the bearing bush (3) adopts a split bearing bush and comprises an upper bearing bush (3-1) and a lower bearing bush (3-2), split surfaces of the upper bearing bush (3-1) and the lower bearing bush (3-2) are matched through scraping, positioned through an internal thread taper pin (11), and connected and fastened through an inner hexagon screw (12).
3. The bottom-mounted intermediate bearing of a main propulsion shafting of a marine vessel as claimed in claim 1, wherein: the bearing cover (2) is also provided with symmetrically distributed dipsticks (13).
4. The bottom-mounted intermediate bearing of a main propulsion shafting of a marine vessel as claimed in claim 1, wherein: the bearing seat (1) is matched with the joint surface of the bearing cover (2) through scraping, an oil groove (14) is formed in the upper end surface of the bearing seat (1), and liquid sealant which is not sticky is arranged between the joint surfaces of the bearing seat (1) and the bearing cover (2).
5. The bottom-mounted intermediate bearing of a main propulsion shafting of a marine vessel as claimed in claim 1, wherein: the sealing plate (10) is rectangular, and a release bolt (16) is arranged on the sealing plate b (10-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021553036.XU CN212297279U (en) | 2020-07-31 | 2020-07-31 | Bottom mounting intermediate bearing of ship main propulsion shafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021553036.XU CN212297279U (en) | 2020-07-31 | 2020-07-31 | Bottom mounting intermediate bearing of ship main propulsion shafting |
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| Publication Number | Publication Date |
|---|---|
| CN212297279U true CN212297279U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021553036.XU Active CN212297279U (en) | 2020-07-31 | 2020-07-31 | Bottom mounting intermediate bearing of ship main propulsion shafting |
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| CN (1) | CN212297279U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810841A (en) * | 2022-04-02 | 2022-07-29 | 陕西理工大学 | Intelligent water lubricating bearing |
| CN115126777A (en) * | 2022-06-08 | 2022-09-30 | 中国船舶重工集团公司第七一九研究所 | Thrust bearing and ship propeller |
| CN115126777B (en) * | 2022-06-08 | 2024-05-28 | 中国船舶重工集团公司第七一九研究所 | Thrust bearing and ship propeller |
-
2020
- 2020-07-31 CN CN202021553036.XU patent/CN212297279U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810841A (en) * | 2022-04-02 | 2022-07-29 | 陕西理工大学 | Intelligent water lubricating bearing |
| CN114810841B (en) * | 2022-04-02 | 2023-06-27 | 陕西理工大学 | Intelligent water lubrication bearing |
| CN115126777A (en) * | 2022-06-08 | 2022-09-30 | 中国船舶重工集团公司第七一九研究所 | Thrust bearing and ship propeller |
| CN115126777B (en) * | 2022-06-08 | 2024-05-28 | 中国船舶重工集团公司第七一九研究所 | Thrust bearing and ship propeller |
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