CN113523190A - Machining device and machining method for ship tail shaft bearing sleeve - Google Patents
Machining device and machining method for ship tail shaft bearing sleeve Download PDFInfo
- Publication number
- CN113523190A CN113523190A CN202110787880.1A CN202110787880A CN113523190A CN 113523190 A CN113523190 A CN 113523190A CN 202110787880 A CN202110787880 A CN 202110787880A CN 113523190 A CN113523190 A CN 113523190A
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- China
- Prior art keywords
- fixing
- shaft bearing
- tail shaft
- bearing sleeve
- ship tail
- Prior art date
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Links
- 238000000034 method Methods 0.000 title description 9
- 238000003754 machining Methods 0.000 title description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims description 34
- 229910045601 alloy Inorganic materials 0.000 claims description 34
- 210000000078 claw Anatomy 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
-
- 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
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to the technical field of ship tail shaft bearing sleeve processing equipment, in particular to a processing device and a processing method of a ship tail shaft bearing sleeve, wherein the processing device comprises an obliquely arranged working platform, a first fixing piece and a second fixing piece which are coaxially arranged on the working platform and are respectively used for sealing and fixing the two axial ends of the ship tail shaft bearing sleeve, a motor and a guide pipe; the motor is in transmission connection with the first fixing piece and drives the ship tail shaft bearing sleeve to rotate along the circumferential direction of the ship tail shaft bearing sleeve through the first fixing piece; one end of the guide pipe penetrates through the second fixing piece, and the guide pipe is communicated with a cavity defined by the end face of the first fixing piece, the end face of the second fixing piece and the ship tail shaft bearing sleeve.
Description
Technical Field
The invention relates to the technical field of ship tail shaft bearing sleeve processing equipment, in particular to a processing device and a processing method for a ship tail shaft bearing sleeve.
Background
The ship tail shaft bearing sleeve comprises a copper matrix positioned on an outer layer and a white wire alloy positioned on an inner layer. In the prior art, the white wire alloy is generally poured on the inner side of the copper matrix in a mode of directly pouring by using a mold, the pouring mode is simple, but the problems of more air holes, more impurities and the like in the white wire alloy after pouring and forming exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: the problem of many holes in the white silk alloy when pouring the white silk alloy in the ship tail shaft bearing housing is solved.
In order to solve the technical problems, the invention adopts the technical scheme that: the processing device of the ship tail shaft bearing sleeve comprises a working platform, a first fixing piece, a second fixing piece, a motor and a guide pipe, wherein the working platform is obliquely arranged, and the first fixing piece and the second fixing piece are coaxially arranged on the working platform and are respectively used for sealing and fixing the two axial ends of the ship tail shaft bearing sleeve;
the motor is in transmission connection with the first fixing piece and drives the ship tail shaft bearing sleeve to rotate along the circumferential direction of the ship tail shaft bearing sleeve through the first fixing piece;
one end of the guide pipe penetrates through the second fixing piece, and the guide pipe is communicated with a cavity defined by the end face of the first fixing piece, the end face of the second fixing piece and the ship tail shaft bearing sleeve.
The inclination direction of the working platform is the axis direction of the second fixing piece inclining downwards towards the first fixing piece.
The first fixing piece comprises a claw disc and a first fixing disc clamped by the claw disc, and a plurality of fixing bolts are arranged at intervals in the circumferential direction of the first fixing disc.
The working platform is provided with a guide rail axially extending along the first fixing piece, and the second fixing piece is arranged on the guide rail and is in sliding connection with the guide rail.
The fixing seat is arranged on the guide rail on one side of the first fixing part, the transmission structure is arranged on the fixing seat, and the fixing seat is connected with the second fixing part in a rotating mode through the transmission structure.
The transmission structure comprises a connecting rod, a connecting disc and a handle, a through hole is formed in the fixing base, the connecting rod is arranged in the through hole and is in threaded connection with the through hole, one end of the connecting rod is connected with the handle, the other end of the connecting rod is connected with the connecting disc, and the connecting disc is rotatably connected with the second fixing piece.
The second fixing piece comprises a second fixed disc and a fixing support for supporting the second fixed disc;
the fixed support is arranged at the lower end of the second fixed disk and is rotationally connected with the second fixed disk.
Wherein the inclination angle of the working platform is 5-15 degrees.
And further providing a processing method of the ship tail shaft bearing seat, wherein two axial ends of a base body of the ship tail shaft bearing seat are plugged, and the base body rotates along the circumferential direction of the base body so as to form the molten white wire alloy in the base body cavity on the cavity wall of the base body cavity.
The invention has the beneficial effects that: the two axial ends of the ship tail shaft bearing sleeve are respectively connected with the first fixing piece and the second fixing piece, the motor is in transmission connection with the first fixing piece, the guide pipe is communicated with a cavity which is jointly limited by the end surface of the first fixing piece, the end surface of the second fixing piece and the ship tail shaft bearing sleeve, so as to fix the ship tail shaft bearing sleeve on the working platform through the first fixing piece and the second fixing piece, white wire alloy is filled into the containing cavity of the ship tail shaft bearing sleeve through the conduit, and in the process of solidifying the white wire alloy, the motor drives the tail shaft bearing sleeve to rapidly rotate along the circumferential direction of the tail shaft bearing sleeve through the first fixing piece, thereby realizing that the white wire alloy can be evenly poured on the cavity wall of the containing cavity of the ship tail shaft bearing sleeve, and gas in the white wire alloy is continuously discharged from the interior of the white wire alloy in the rotating process so as to reduce the number and size of air holes in the white wire alloy after pouring and forming.
Drawings
Fig. 1 is a schematic structural view of a machining apparatus for a bearing housing of a stern shaft of a ship in an embodiment of the present invention from one perspective;
fig. 2 is a schematic structural view of a device for machining a bearing housing of a stern shaft of a ship according to another embodiment of the present invention.
Description of reference numerals: 1. a working platform; 2. a first fixing member; 21. a jaw plate; 22. a first fixed disk; 3. a second fixing member; 31. a second fixed disk; 32. fixing a bracket; 4. a conduit; 5. a fixed seat; 6. a transmission structure; 61. a handle; 62. a connecting rod; 7. a hydraulic lever; 8. a guide rail.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 and 2, the present invention provides a processing apparatus for a ship tail shaft bearing housing, including an obliquely disposed working platform 1, a first fixing member 2 and a second fixing member 3 coaxially disposed on the working platform 1 and respectively used for sealing and fixing two axial ends of the ship tail shaft bearing housing, a motor and a conduit 4; the motor is in transmission connection with the first fixing piece 2 and drives the ship tail shaft bearing sleeve to rotate along the circumferential direction of the ship tail shaft bearing sleeve through the first fixing piece 2; one end of the guide pipe 4 penetrates through the second fixing part 3, and the guide pipe 4 is communicated with a cavity defined by the end face of the first fixing part 2, the end face of the second fixing part 3 and the ship tail shaft bearing sleeve.
Specifically, the working principle of the invention is as follows: an operator firstly connects the two axial ends of the ship tail shaft bearing sleeve through the first fixing piece 2 and the second fixing piece 3 respectively so as to fix the ship tail shaft bearing sleeve on the working platform 1, and the end face of the first fixing piece 2 and the end face of the second fixing piece 3 are abutted with the openings at the two axial ends of the ship tail shaft bearing sleeve so as to enable the containing cavity of the ship tail shaft bearing sleeve to be in a relatively closed state; then, white wire alloy is poured into the containing cavity of the ship tail shaft bearing sleeve through the guide pipe 4, and at the moment, the white wire alloy slowly flows towards the inclined low position in the containing cavity due to the fact that the working platform 1 is inclined; then, the motor is started, and the motor drives the ship tail shaft bearing sleeve to rotate along the circumferential direction of the ship tail shaft bearing sleeve through the first fixing piece 2, so that the white wire alloy can be uniformly poured on the cavity wall of the containing cavity; and finally, after the white wire alloy is completely formed, the motor is turned off, and the ship tail shaft bearing sleeve is taken out from between the first fixing part 2 and the second fixing part 3, so that the process of pouring the white wire alloy on the cavity wall of the ship tail shaft bearing sleeve is completed.
Preferably, the axial direction of the first fixing part 2 and the second fixing part 3 is consistent with the inclination direction of the working platform 1, that is, an operator can control the axial direction of the first fixing part 2 and the second fixing part 3 by adjusting the inclination direction of the working platform 1.
More preferably, the hydraulic device further comprises a hydraulic rod 7, wherein the hydraulic rod 7 is arranged below the working platform 1, and the hydraulic rod 7 is hinged to the working platform 1 to allow an operator to adjust the axial directions of the first fixing part 2 and the second fixing part 3 according to actual needs.
From the above description, the beneficial effects of the present invention are: by respectively connecting the two axial ends of the ship tail shaft bearing sleeve with the first fixing piece 2 and the second fixing piece 3, the motor is connected with the first fixing part 2 in a transmission way, the guide pipe 4 is communicated with a cavity which is jointly limited by the end surface of the first fixing part 2, the end surface of the second fixing part 3 and the ship tail shaft bearing sleeve, so as to fix the ship tail shaft bearing sleeve on the working platform 1 through the first fixing piece 2 and the second fixing piece 3, white wire alloy is filled into the containing cavity of the ship tail shaft bearing sleeve through the conduit 4, and in the process of solidifying the white wire alloy, the motor drives the tail shaft bearing sleeve to rapidly rotate along the circumferential direction of the tail shaft bearing sleeve through the first fixing part 2, thereby realizing that the white wire alloy can be evenly poured on the cavity wall of the containing cavity of the ship tail shaft bearing sleeve, and gas in the white wire alloy is continuously discharged from the interior of the white wire alloy in the rotating process so as to reduce the number and size of air holes in the white wire alloy after pouring and forming.
Further, the inclination direction of the working platform 1 is the axial direction in which the second fixing member 3 inclines downward toward the first fixing member 2.
From the above description, by setting the inclination direction of the working platform 1 to the direction in which the second fixing member 3 inclines downwards towards the first fixing member 2, that is, when the second fixing member 3 is in the high position, the first fixing member 2 is in the low position, it is realized that when the white silk alloy is poured into the cavity of the stern shaft bearing housing of the ship from the conduit 4, the white silk alloy can slowly flow towards the first fixing member 2, so as to improve the uniformity of the white silk alloy in the casting process.
Further, the first fixing member 2 includes a claw disc 21 and a first fixing disc 22 clamped by the claw disc 21, and a plurality of fixing bolts are arranged at intervals in the circumferential direction of the first fixing disc 22.
From the above description, the motor is in transmission connection with the jaw disc 21, the jaw disc 21 is in clamping connection with the first fixing disc 22 so that the jaw disc and the first fixing disc can keep a synchronous rotating state, and the fixing bolts are arranged at intervals in the circumferential direction of the first fixing disc 22 so as to improve the stability of the ship tail shaft bearing sleeve when the axial end of the ship tail shaft bearing sleeve is connected with the first fixing disc 22.
Furthermore, a guide rail 8 extending along the axial direction of the first fixing member 2 is arranged on the working platform 1, and the second fixing member 3 is arranged on the guide rail 8 and is in sliding connection with the guide rail 8.
As can be seen from the above description, the second fixing member 3 is slidably connected to the guide rail 8, so as to allow an operator to adjust the position of the second fixing member 3 according to the axial length of the stern shaft bearing housing, thereby improving the adaptability of the processing device of the stern shaft bearing housing to the stern shaft bearing housings of various sizes, and further improving the sealing performance of the cavity of the stern shaft bearing housing when the stern shaft bearing housing is fixed by the first fixing member 2 and the second fixing member 3.
Further, still include fixing base 5 and drive structure 6, fixing base 5 set up in second mounting 3 deviate from in on the guide rail 8 of one side of first mounting 2, drive structure 6 sets up on fixing base 5, fixing base 5 passes through drive structure 6 with second mounting 3 rotates and is connected.
It can be known from the above description that the fixing base 5 is rotationally connected with the second fixing member 3 through the transmission structure 6 to allow an operator to drive the second fixing member 3 to move on the guide rail 8 through the transmission structure 6, so that the convenience of adjusting the distance between the second fixing member 3 and the first fixing member 2 is improved.
Specifically, transmission structure 6 includes connecting rod 62, connection pad and handle 61, be provided with the through-hole in the fixing base 5, connecting rod 62 set up in the through-hole and with through-hole threaded connection, handle 61 is connected to the one end of connecting rod 62, and the connection pad is connected to the other end, the connection pad with second mounting 3 rotates and is connected.
In one embodiment, the operator rotates the handle 61 to drive the second fixing member 3 to move towards or away from the first fixing member 2 through the connecting rod 62 and the connecting disc, so as to adjust the distance between the second fixing member 3 and the first fixing member 2.
Further, the second fixing member 3 includes a second fixed disk 31 and a fixing bracket 32 for supporting the second fixed disk 31;
the fixing bracket 32 is disposed at a lower end of the second fixed disk 31 and is rotatably connected to the second fixed disk 31.
As can be seen from the above description, the fixing bracket 32 is used to fix the second fixing plate 31 and allow the second fixing plate 31 to rotate relative to the fixing bracket.
Further, the inclination angle of the working platform 1 is 5-15 degrees.
The processing method of the ship tail shaft bearing seat comprises the steps of plugging two axial ends of a base body of the ship tail shaft bearing seat, enabling the base body to rotate along the circumferential direction of the base body, and forming molten white-silk alloy located in a cavity of the base body on the cavity wall of the cavity of the base body.
Example one
Referring to fig. 1 and 2, the processing device of the ship tail shaft bearing sleeve comprises a working platform 1 which is obliquely arranged, a first fixing piece 2 and a second fixing piece 3 which are coaxially arranged on the working platform 1 and are respectively used for sealing and fixing the two axial ends of the ship tail shaft bearing sleeve, a motor and a guide pipe 4;
the motor is in transmission connection with the first fixing piece 2 and drives the ship tail shaft bearing sleeve to rotate along the circumferential direction of the ship tail shaft bearing sleeve through the first fixing piece 2;
one end of the guide pipe 4 is arranged in the second fixing part 3 in a penetrating mode, and the guide pipe 4 is communicated with a cavity defined by the end face of the first fixing part 2, the end face of the second fixing part 3 and the ship tail shaft bearing sleeve;
the inclination direction of the working platform 1 is the axial direction that the second fixing part 3 inclines downwards towards the first fixing part 2;
the first fixing piece 2 comprises a claw disc 21 and a first fixing disc 22 clamped by the claw disc 21, and a plurality of fixing bolts are arranged at intervals in the circumferential direction of the first fixing disc 22;
a guide rail 8 extending along the axial direction of the first fixing piece 2 is arranged on the working platform 1, and the second fixing piece 3 is arranged on the guide rail 8 and is in sliding connection with the guide rail 8;
the processing device of the ship tail shaft bearing sleeve further comprises a fixed seat 5 and a transmission structure 6, wherein the fixed seat 5 is arranged on a guide rail 8 on one side of the second fixing part 3, which is far away from the first fixing part 2, the transmission structure 6 is arranged on the fixed seat 5, and the fixed seat 5 is rotatably connected with the second fixing part 3 through the transmission structure 6;
the transmission structure 6 comprises a connecting rod 62, a connecting disc and a handle 61, a through hole is formed in the fixed seat 5, the connecting rod 62 is arranged in the through hole and is in threaded connection with the through hole, one end of the connecting rod 62 is connected with the handle 61, the other end of the connecting rod 62 is connected with the connecting disc, and the connecting disc is rotatably connected with the second fixing piece 3;
the second fixing member 3 includes a second fixed disk 31 and a fixing bracket 32 for supporting the second fixed disk 31;
the fixing bracket 32 is arranged at the lower end of the second fixed disk 31 and is rotatably connected with the second fixed disk 31;
the inclination angle of the working platform 1 is 10 degrees.
In summary, the invention provides a processing device for a ship tail shaft bearing sleeve, which is characterized in that two axial ends of the ship tail shaft bearing sleeve are respectively connected with a first fixing piece 2 and a second fixing piece 3, a motor is in transmission connection with the first fixing piece 2, a conduit 4 is communicated with a cavity defined by the end face of the first fixing piece 2, the end face of the second fixing piece 3 and the ship tail shaft bearing sleeve, so that the ship tail shaft bearing sleeve is fixed on a working platform 1 through the first fixing piece 2 and the second fixing piece 3, a white wire alloy is filled into the cavity of the ship tail shaft bearing sleeve through the conduit 4, and the motor drives the tail shaft bearing sleeve to rapidly rotate along the circumferential direction through the first fixing piece 2 in the solidification process of the white wire alloy, so that the white wire alloy can be uniformly poured on the cavity wall of the cavity of the ship tail shaft bearing sleeve, and gas in the white wire alloy is discharged from the interior of the white wire alloy in the rotation process, so as to reduce the number and size of the air holes in the white wire alloy after casting and forming.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (9)
1. The processing device of the ship tail shaft bearing sleeve is characterized by comprising an obliquely arranged working platform, a first fixing piece, a second fixing piece, a motor and a guide pipe, wherein the first fixing piece and the second fixing piece are coaxially arranged on the working platform and are respectively used for sealing and fixing the two axial ends of the ship tail shaft bearing sleeve;
the motor is in transmission connection with the first fixing piece and drives the ship tail shaft bearing sleeve to rotate along the circumferential direction of the ship tail shaft bearing sleeve through the first fixing piece;
one end of the guide pipe penetrates through the second fixing piece, and the guide pipe is communicated with a cavity defined by the end face of the first fixing piece, the end face of the second fixing piece and the ship tail shaft bearing sleeve.
2. The processing device for the stern shaft bearing housing of the ship as claimed in claim 1, wherein the inclination direction of the working platform is an axial direction in which the second fixing member is inclined downward toward the first fixing member.
3. The processing device of the ship tail shaft bearing sleeve as claimed in claim 1, wherein the first fixing member comprises a claw disc and a first fixing disc clamped by the claw disc, and a plurality of fixing bolts are arranged at intervals in the circumferential direction of the first fixing disc.
4. The processing device for the ship tail shaft bearing sleeve as claimed in claim 1, wherein a guide rail extending along the axial direction of the first fixing member is arranged on the working platform, and the second fixing member is arranged on the guide rail and is slidably connected with the guide rail.
5. The processing device of the ship tail shaft bearing sleeve according to claim 4, further comprising a fixing seat and a transmission structure, wherein the fixing seat is arranged on a guide rail on one side of the second fixing member, which is far away from the first fixing member, the transmission structure is arranged on the fixing seat, and the fixing seat is rotatably connected with the second fixing member through the transmission structure.
6. The processing device of the ship tail shaft bearing sleeve as claimed in claim 5, wherein the transmission structure comprises a connecting rod, a connecting disc and a handle, a through hole is formed in the fixing seat, the connecting rod is arranged in the through hole and is in threaded connection with the through hole, one end of the connecting rod is connected with the handle, the other end of the connecting rod is connected with the connecting disc, and the connecting disc is rotatably connected with the second fixing piece.
7. The processing device of the ship tail shaft bearing sleeve as claimed in claim 1, wherein the second fixing member comprises a second fixing disc and a fixing bracket for supporting the second fixing disc;
the fixed support is arranged at the lower end of the second fixed disk and is rotationally connected with the second fixed disk.
8. The processing device of the ship tail shaft bearing sleeve as claimed in claim 1, wherein the inclination angle of the working platform is 5-15 °.
9. The processing method of the ship tail shaft bearing seat is characterized in that two axial ends of a base body of the ship tail shaft bearing seat are plugged, the base body rotates along the circumferential direction of the base body, and molten white wire alloy in a base body cavity is formed on the cavity wall of the base body cavity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311150739.6A CN117161361A (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
| CN202110787880.1A CN113523190B (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787880.1A CN113523190B (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311150739.6A Division CN117161361A (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113523190A true CN113523190A (en) | 2021-10-22 |
| CN113523190B CN113523190B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110787880.1A Active CN113523190B (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
| CN202311150739.6A Pending CN117161361A (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311150739.6A Pending CN117161361A (en) | 2021-07-13 | 2021-07-13 | Processing device and processing method for ship tail shaft bearing sleeve |
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| CN (2) | CN113523190B (en) |
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| Publication number | Publication date |
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| CN113523190B (en) | 2023-09-22 |
| CN117161361A (en) | 2023-12-05 |
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Denomination of invention: The machining device and method for the bearing sleeve of the stern shaft of ships Effective date of registration: 20231204 Granted publication date: 20230922 Pledgee: Fujian Strait Bank Co.,Ltd. Fuding Branch Pledgor: FUJIAN LIXIN SHIP ENGINEERING Co.,Ltd. Registration number: Y2023980068548 |
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