CN116021692A - Stern tube epoxy casting method and stern tube mounting structure - Google Patents
Stern tube epoxy casting method and stern tube mounting structure Download PDFInfo
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- CN116021692A CN116021692A CN202111257536.8A CN202111257536A CN116021692A CN 116021692 A CN116021692 A CN 116021692A CN 202111257536 A CN202111257536 A CN 202111257536A CN 116021692 A CN116021692 A CN 116021692A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention belongs to the technical field of ship construction, and discloses a stern tube epoxy casting method and a stern tube mounting structure. The method for the epoxy casting of the stern tube comprises the steps of supporting the stern tube in the stern tube, wherein the stern tube comprises a tube body and a flange plate, and the concrete casting steps comprise respectively manufacturing the tube body and the flange plate, and arranging first epoxy ventilation holes and epoxy injection holes on the flange plate; the pipe body is penetrated and arranged on the stern post pipe, two ends of the pipe body are respectively connected with two ends of the stern post pipe through flange plates, and a pouring gap is formed between the stern pipe and the stern post pipe; pouring epoxy resin into the pouring gap through the epoxy injection hole; and the first epoxy vent holes and the epoxy injection holes are respectively plugged through the plugging piece. The epoxy casting method for the stern tube reduces the labor intensity of workers in the epoxy casting process, shortens the casting period, ensures that the solidified epoxy resin is not easy to break, and saves the cost.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a stern tube epoxy casting method and a stern tube mounting structure.
Background
The stern tube device is an important device of a ship power system, and is mainly used for supporting propeller shafts and ensuring that the propeller shafts can reliably pass out of a ship, keep watertight, prevent sea water from leaking into the ship in a large amount, and prevent lubricating oil from leaking out to pollute the sea water. The stern tube device is arranged in a stern casting structure, the stern casting structure comprises a front stern post structure and a rear stern post structure, the front section of the stern tube is arranged on the front stern post structure, the rear end part of the stern tube is arranged on the rear stern post structure, the stern tube and the stern casting are arranged in an epoxy pouring way, namely, the space between the stern tube and the stern casting is filled with epoxy resin, and the stern tube is supported by the epoxy resin.
When epoxy resin is poured between the stern tube and the stern casting, a pouring hole and an air vent are needed, and the existing method is that after the stern casting is cast and molded, holes are drilled on the front stern post and the rear stern post respectively, so that the workload is high; after the epoxy pouring stern tube is installed and the epoxy resin pouring is finished, the sealing plates are required to seal the epoxy air holes and the epoxy injection holes on the stern castings, the hole sealing requirements of the epoxy air holes and the epoxy injection holes are extremely high, the epoxy area cannot be subjected to fire operation, but in order to ensure tightness, the fire operation is required to be carried out according to strict special welding methods and requirements, the technical requirements on constructors are extremely high, and the risk of fracture of the stern tube exists.
Therefore, there is a need for a method for casting stern tube epoxy to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a stern tube epoxy casting method, which can solve the problems that in the prior art, holes and holes are required to be drilled on a stern casting in the stern tube epoxy casting process, and time and labor are wasted.
To achieve the purpose, the invention adopts the following technical scheme:
a method of oxygen casting of a stern tube for supporting the stern tube within the stern tube, the stern tube including a tube body and flange plates at opposite ends of the tube body, comprising:
manufacturing the pipe body and the flange plate respectively, wherein a first epoxy vent hole and an epoxy injection hole are formed in the flange plate;
the pipe body is penetrated into the stern post pipe, two ends of the pipe body are respectively connected with two ends of the stern post pipe through the flange plates, a pouring gap is formed between the stern pipe and the stern post pipe, and the first epoxy air holes and the epoxy injection holes are respectively communicated with the pouring gap;
pouring epoxy resin into the pouring gap through the epoxy injection hole;
and the first epoxy vent holes and the epoxy injection holes are respectively plugged through plugging pieces.
Optionally, the flange plate includes:
the end plate is connected with the stern post pipe, and the first epoxy vent holes are formed in the end plate;
and the shaft tube is connected with the tube body and is provided with a second epoxy ventilation hole.
Optionally, before the pipe body is threaded into the stern tube, the method includes:
and checking that the part of the stern tube positioned in the pouring gap is free of paint, and checking that the part of the stern tube positioned in the pouring gap is free of paint.
Optionally, before pouring the epoxy resin into the pouring gap, further comprising:
installing an injection pipe on the epoxy injection hole, and connecting the injection pipe with an electric pump;
and the first epoxy ventilation holes and the second epoxy ventilation holes are respectively provided with ventilation pipes, and the pipe orifice of the ventilation pipes far away from one end of the flange plate is higher than the highest point of the pouring gap.
Optionally, casting the epoxy resin into the casting gap includes:
pouring the epoxy resin into the pouring gap through the electric pump, stopping the electric pump when the epoxy resin overflows from the vent pipe, and starting the electric pump after the liquid level in the vent pipe is lowered;
this step is repeated until the liquid level in the vent pipe remains unchanged after stopping the electric pump.
Optionally, after casting the epoxy resin into the casting gap:
after the epoxy resin is cooled and solidified, the vent pipe and the injection pipe are removed;
and removing epoxy burrs at the positions of the epoxy injection hole, the first epoxy vent hole and the second epoxy vent hole.
Optionally, the epoxy injection hole, the first epoxy ventilation hole and the second epoxy ventilation hole are all threaded holes, the plugging piece is a bolt, the bolt is in threaded connection with the threaded holes, and sealant is arranged between the threaded holes and the bolt.
Optionally, the aperture of the epoxy injection hole is 20mm-40mm, and the apertures of the first epoxy vent and the second epoxy vent are 30mm-50mm.
A stern tube mounting structure, the stern tube mounting structure comprising:
a stern post tube;
the stern tube is coaxially arranged with the stern tube and forms a pouring space with the stern tube, the stern tube comprises a tube body and flange plates positioned at two ends of the tube body, and the flange plates are connected with the stern tube;
and the epoxy resin is poured into the pouring space by the stern tube epoxy pouring method.
Optionally, a cooling chamber is further arranged between the stern tube and the tube body, and cooling water is filled in the cooling chamber.
The invention has the beneficial effects that:
according to the epoxy pouring method for the stern tube, the epoxy injection hole and the first epoxy vent hole are formed in the flange plate, after the epoxy resin is poured into the pouring gap between the stern tube and the stern tube, the epoxy injection hole and the first epoxy vent hole are plugged by the plugging piece, on one hand, the epoxy injection hole and the first epoxy vent hole can be directly considered in the design process of the flange plate and can be directly manufactured in the manufacturing process, and compared with the situation that the hole is formed in the stern tube formed by casting in the later stage in the prior art, the labor intensity of workers is reduced, the pouring period is shortened, and the position accuracy of the epoxy injection hole and the first epoxy vent hole is guaranteed; on the other hand, after the epoxy resin pouring is completed, the epoxy injection hole and the first epoxy vent holes are directly plugged by the plugging piece, so that the problem that the epoxy resin which is solidified and formed in a pouring gap is broken in the traditional process of welding and plugging by the sealing plate can be avoided, and the epoxy resin after the pouring, solidification and forming can play a good supporting role on the stern tube.
Drawings
FIG. 1 is a flow chart of a method for oxygen casting of stern tubes provided by the invention;
FIG. 2 is a second flow chart of the method for oxygen casting of stern tubes provided by the invention;
FIG. 3 is a schematic view of a flange plate according to the present invention;
FIG. 4 is a schematic structural view of the stern tube mounting structure provided by the present invention;
FIG. 5 is a schematic view of the rear end of the stern tube mounting structure provided by the invention;
fig. 6 is a schematic structural view of the front end of the stern tube mounting structure provided by the invention.
In the figure:
1. a stern tube; 11. a tube body; 12. a flange plate; 121. an end plate; 1211. a first epoxy vent; 1212. an epoxy injection hole; 122. a shaft tube; 1221. a second epoxy vent;
2. a stern post tube;
3. casting gaps; 31. an epoxy resin;
4. a blocking member;
5. an electric pump; 51. an injection tube; 52. a ventilation pipe;
6. and cooling the chamber.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the present embodiment provides a method for epoxy casting of a stern tube for supporting a stern tube 1 in a stern tube 2, the stern tube 1 including a tube body 11 and flange plates 12 positioned at both ends of the tube body 11, the method for epoxy casting of a stern tube comprising manufacturing the tube body 11 and the flange plates 12, respectively, and providing first epoxy ventilation holes 1211 and epoxy injection holes 1212 on the flange plates 12, penetrating the tube body 11 into the stern tube 2, connecting both ends of the tube body 11 with both ends of the stern tube 2 through the flange plates 12, respectively, forming a casting gap 3 between the stern tube 1 and the stern tube 2, respectively, the first epoxy ventilation holes 1211 and the epoxy injection holes 1212 communicating with the casting gap 3, casting an epoxy resin 31 into the casting gap 3 through the epoxy injection holes 1212, and plugging the first epoxy ventilation holes 1211 and the epoxy injection holes 1212 with a piece 4 after the epoxy resin 31 cools.
According to the method for epoxy casting of the stern tube, the epoxy injection holes 1212 and the first epoxy ventilation holes 1211 are formed in the flange plate 12, after the epoxy resin 31 is poured into the pouring gap 3 between the stern tube 1 and the stern tube 2, the epoxy injection holes 1212 and the first epoxy ventilation holes 1211 are plugged by the plugging piece 4, on one hand, the epoxy injection holes 1212 and the first epoxy ventilation holes 1211 can be directly considered in the design process of the flange plate 12 and are directly manufactured in the manufacturing process, and compared with the case that holes are formed in the stern tube 2 formed by casting in the later period in the prior art, the labor intensity of workers can be reduced, the pouring period is shortened, and the position accuracy of the epoxy injection holes 1212 and the first epoxy ventilation holes 1211 is guaranteed; on the other hand, after the pouring of the epoxy resin 31 is completed, the sealing piece 4 is directly used for sealing the epoxy injection hole 1212 and the first epoxy vent 1211, so that the problem that the epoxy resin 31 which is solidified and formed in the pouring gap 3 is broken in the traditional sealing plate welding sealing process can be avoided, and the epoxy resin 31 after the pouring, solidification and forming can play a good supporting role on the stern tube 1.
The flange plate 12 includes an end plate 121 and a shaft tube 122, the end plate 121 is connected with the stern post tube 2, a first epoxy vent 1211 is provided on the end plate 121, and the shaft tube 122 is connected with the tube body 11. For the flange plate 12 with a longer axial length of the shaft tube 122, in order to ensure that air in the pouring gap 3 can be effectively discharged in the pouring process of the epoxy resin 31, as shown in fig. 5, a second epoxy vent 1221 is arranged on the shaft tube 122, and in the pouring process, the air in the pouring gap 3 can be respectively discharged from the first epoxy vent 1211 and the second epoxy vent 1221 positioned at two ends of the flange plate 12, so that the air in the pouring gap 3 can be timely discharged when the epoxy resin 31 is poured into the pouring gap 3, the generation of bubbles is prevented, and the pouring quality is improved. In this embodiment, the front end casting gap 3 of the stern post tube 2 is shorter, so only the first epoxy air holes 1211 are provided at the front end of the stern post tube 2, and in this embodiment, the rear end casting gap 3 of the stern post tube 2 is longer, so the second epoxy air holes 1221 are provided on the shaft tube 122, thereby ensuring that air in the rear end casting gap 3 of the stern post tube 2 can be timely discharged, preventing air bubbles from being generated, and improving casting quality.
Optionally, as shown in fig. 2, before the pipe body 11 is penetrated in the stern post pipe 2, the portion of the stern post pipe 1 located in the pouring gap 3 is checked to be free of paint, and the portion of the stern post pipe 2 located in the pouring gap 3 is checked to be free of paint, so that after the epoxy resin 31 is poured into the pouring gap 3, the epoxy resin 31 can be bonded with the stern pipe 1 and the stern post pipe 2 more firmly, and the supporting effect of the cured and formed epoxy resin 31 on the stern pipe 1 is better.
Preferably, as shown in fig. 2, before the epoxy resin 31 is poured into the pouring gap 3, the injection pipe 51 is installed on the epoxy injection hole 1212, the injection pipe 51 is connected with the electric pump 5, the vent pipe 52 is installed on the first epoxy vent 1211 and the second epoxy vent 1221, and the pipe orifice of the vent pipe 52 is higher than the highest point of the pouring gap 3. The epoxy resin 31 is conveniently poured into the pouring gap 3, so that the pouring process is simplified, the pouring time is saved, and the pouring period is shortened.
Further, when the epoxy resin 31 is poured into the pouring gap 3 through the electric pump 5, when the epoxy resin 31 overflows from the vent pipe 52, the electric pump 5 is stopped, the electric pump 5 is started after the liquid level in the vent pipe 52 is waited for to drop, then the step is repeated until the liquid level in the vent pipe 52 is unchanged after the electric pump 5 is stopped, the process can enable the epoxy resin 31 to fill the whole pouring gap 3, the epoxy resin 31 is prevented from generating pouring holes in the pouring gap 3, and the pouring quality is improved.
Optionally, after the epoxy resin 31 is poured into the pouring gap 3, after the epoxy resin 31 is cooled and solidified, the vent pipe 52 and the injection pipe 51 are removed, and epoxy burrs on the epoxy injection holes 1212, the first epoxy ventilation holes 1211 and the second epoxy ventilation holes 1221 are removed by using a utility knife, so that the sealing performance of the plugging piece 4 is ensured.
Optionally, the epoxy injection hole 1212, the first epoxy ventilation hole 1211 and the second epoxy ventilation hole 1221 are all threaded holes, the plugging piece 4 is a bolt, and the bolt is directly screwed into the threaded holes in the plugging process.
Further, in order to improve the sealability and tightness between the blocking member 4 and the screw hole, a tightening sealant is provided between the bolt and the blocking member 4.
In other embodiments, the blocking member 4 may be a threaded plunger made of alloy steel, which can also block a threaded hole.
Alternatively, as shown in FIG. 3, the aperture of the epoxy injection holes 1212 is 20mm-40mm, and the aperture of the epoxy injection holes 1212 is 30mm in this embodiment, so that the speed of injecting the epoxy 31 into the casting gap 3 can be increased, and the strength of the flange plate 12 can be prevented from being affected by excessive opening. The diameters of the first epoxy vent 1211 and the second epoxy vent 1221 are 30mm-50mm, and the diameters of the first epoxy vent 1211 and the second epoxy vent 1221 in this embodiment are 40mm, so that the air discharging efficiency in the pouring gap 3 can be improved, and the problems of inconvenient plugging and poor sealing effect after plugging caused by oversized holes can be avoided.
It will be appreciated that, as shown in fig. 2, the specific steps in this embodiment include:
step one: the pipe body 11 and the flange plate 12 are manufactured, respectively, and the flange plate 12 is provided with a first epoxy vent 1211 and an epoxy injection hole 1212.
Step two: and checking that the part of the stern tube 1 positioned in the pouring gap 3 is free of paint, and checking that the part of the stern tube 2 positioned in the pouring gap 3 is free of paint.
Step three: the pipe body 11 is arranged on the stern post pipe 2 in a penetrating way, two ends of the pipe body 11 are respectively connected with two ends of the stern post pipe 2 through the flange plates 12, a pouring gap 3 is formed between the stern pipe 1 and the stern post pipe 2, and the first epoxy air holes 1211 and the epoxy injection holes 1212 are respectively communicated with the pouring gap 3.
Step four: mounting an injection tube 51 on the epoxy injection hole 1212, and connecting the injection tube 51 to the electric pump 5; the vent pipes 52 are respectively installed on the first epoxy vent hole 1211 and the second epoxy vent hole 1221, and the pipe orifice of the vent pipe 52 far from one end of the flange plate 12 is higher than the highest point of the casting gap 3.
Step five: pouring the epoxy resin 31 into the pouring gap 3 through the electric pump 5, stopping the electric pump 5 when the epoxy resin 31 overflows from the vent pipe 52, and starting the electric pump 5 after the liquid level in the vent pipe 52 is lowered; this step is repeated until the liquid level in the vent pipe 52 remains unchanged after stopping the electric pump 5.
Step six: after the epoxy resin 31 is cooled and solidified, the vent pipe 52 and the injection pipe 51 are removed; the epoxy burrs at the epoxy injection holes 1212, the first epoxy vent 1211, and the second epoxy vent 1221 are removed.
Step seven: the first epoxy vent 1211 and the epoxy injection hole 1212 are respectively plugged by a plugging member 4.
The present embodiment also provides a stern tube 1 mounting structure, as shown in fig. 4-6, which includes a stern tube 2 and a stern tube 1, the stern tube 1 and the stern tube 2 are coaxially arranged and form a casting gap 3 with the stern tube 2, the stern tube 1 includes a tube body 11 and flange plates 12 located at two ends of the tube body 11, the flange plates 12 are connected with the stern tube 2, and the epoxy resin 31 is cast into the casting gap 3 by adopting the method of the stern tube epoxy casting. The stern tube mounting structure provided by the embodiment does not need to be provided with holes on the stern tube 122, the strength of the stern tube 122 is high, the tightness is good, the damage of the stern tube 1 caused by the seawater entering into the stern tube 1 can be better prevented, and the leakage of lubricating oil in the stern tube 1 into the seawater to pollute the marine environment can be prevented.
Preferably, a cooling chamber 6 is further arranged between the stern tube 2 and the stern tube 1, cooling water is filled in the cooling chamber 6, lubricating oil in the stern tube 1 can be cooled, the temperature of the lubricating oil is in a normal range, and normal operation of equipment is ensured.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A method for the epoxy casting of a stern tube for supporting a stern tube (1) within a stern tube (2), the stern tube (1) comprising a tube body (11) and flange plates (12) at both ends of the tube body (11), comprising:
manufacturing the pipe body (11) and the flange plate (12) respectively, wherein a first epoxy ventilation hole (1211) and an epoxy injection hole (1212) are formed in the flange plate (12);
the pipe body (11) is penetrated into the stern post pipe (2), two ends of the pipe body (11) are respectively connected with two ends of the stern post pipe (2) through the flange plates (12), a pouring gap (3) is formed between the stern pipe (1) and the stern post pipe (2), and the first epoxy air holes (1211) and the epoxy injection holes (1212) are respectively communicated with the pouring gap (3);
-casting an epoxy resin (31) through the epoxy injection hole (1212) into the casting gap (3);
and the first epoxy vent holes (1211) and the epoxy injection holes (1212) are respectively plugged through plugging pieces (4).
2. The method of stern tube epoxy casting of claim 1 wherein the flange plate (12) comprises:
an end plate (121) connected with the stern tube (2), the first epoxy vent holes (1211) being arranged on the end plate (121);
the shaft tube (122) is connected with the tube body (11), and a second epoxy ventilation hole (1221) is formed in the shaft tube (122).
3. A method of stern tube epoxy casting according to claim 1, characterised in that before threading the tube body (11) into the stern tube (2) it comprises:
and checking that the part of the stern tube (1) positioned in the pouring gap (3) is free of paint, and checking that the part of the stern tube (2) positioned in the pouring gap (3) is free of paint.
4. A method of epoxy casting of stern tubes as claimed in claim 2, and including, prior to casting the epoxy resin (31) into the casting gap (3), the steps of:
mounting an injection tube (51) on the epoxy injection hole (1212), and connecting the injection tube (51) with an electric pump (5);
and the first epoxy ventilation holes (1211) and the second epoxy ventilation holes (1221) are respectively provided with ventilation pipes (52), and the pipe orifice of the ventilation pipes (52) far away from one end of the flange plate (12) is higher than the highest point of the pouring gap (3).
5. A method of epoxy casting of stern tubes as claimed in claim 4, and including, when casting the epoxy resin (31) into the casting gap (3):
pouring the epoxy resin (31) into the pouring gap (3) through the electric pump (5), stopping the electric pump (5) when the epoxy resin (31) overflows from the vent pipe (52), and starting the electric pump (5) after the liquid level in the vent pipe (52) is lowered;
this step is repeated until the liquid level in the vent pipe (52) remains unchanged after stopping the electric pump (5).
6. A method of stern tube epoxy casting as claimed in claim 5, characterised in that after casting the epoxy resin (31) into the casting gap (3):
removing the vent pipe (52) and the injection pipe (51) after the epoxy resin (31) is cooled and solidified;
removing epoxy burrs at the epoxy injection holes (1212), the first epoxy vent holes (1211), and the second epoxy vent holes (1221).
7. The stern tube epoxy casting method according to claim 2, wherein the epoxy injection holes (1212), the first epoxy ventilation holes (1211) and the second epoxy ventilation holes (1221) are all threaded holes, the blocking piece (4) is a bolt, the bolt is in threaded connection with the threaded holes, and a sealant is arranged between the threaded holes and the bolt.
8. The method of stern tube epoxy casting of claim 2 wherein the aperture of the epoxy injection holes (1212) is 20mm to 40mm and the apertures of the first epoxy vent holes (1211) and the second epoxy vent holes (1221) are 30mm to 50mm.
9. A stern tube mounting structure, the stern tube mounting structure comprising:
a stern tube (2);
the stern tube (1) is coaxially arranged with the stern tube (2) and forms a pouring space with the stern tube (2), the stern tube (1) comprises a tube body (11) and flange plates (12) positioned at two ends of the tube body (11), and the flange plates (12) are connected with the stern tube (2);
epoxy resin (31) being cast into the casting space by the method of epoxy casting of stern tubes as claimed in any one of claims 1 to 8.
10. The stern tube mounting structure according to claim 9, wherein a cooling chamber (6) is further provided between the stern tube (2) and the tube body (11), and the cooling chamber (6) is filled with cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111257536.8A CN116021692A (en) | 2021-10-27 | 2021-10-27 | Stern tube epoxy casting method and stern tube mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111257536.8A CN116021692A (en) | 2021-10-27 | 2021-10-27 | Stern tube epoxy casting method and stern tube mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116021692A true CN116021692A (en) | 2023-04-28 |
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ID=86071241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111257536.8A Pending CN116021692A (en) | 2021-10-27 | 2021-10-27 | Stern tube epoxy casting method and stern tube mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116021692A (en) |
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2021
- 2021-10-27 CN CN202111257536.8A patent/CN116021692A/en active Pending
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