CN114455054A - Radial multi-point adjustment butt type rudder bearing - Google Patents
Radial multi-point adjustment butt type rudder bearing Download PDFInfo
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- CN114455054A CN114455054A CN202210149275.6A CN202210149275A CN114455054A CN 114455054 A CN114455054 A CN 114455054A CN 202210149275 A CN202210149275 A CN 202210149275A CN 114455054 A CN114455054 A CN 114455054A
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- 210000004907 gland Anatomy 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/06—Steering by rudders
- B63H25/38—Rudders
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- Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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- Ocean & Marine Engineering (AREA)
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Abstract
The invention discloses a radial multi-point adjusting abutting type rudder bearing, which comprises a rudder bearing body, a rudder stock body, a positioning gland and a multi-point abutting mechanism, wherein the rudder stock body is provided with a first connecting plate and a second connecting plate; during assembly, the rotary clamping ring body of the rudder stock body is arranged at the upper ends of the plurality of support connecting plates, then the plurality of lower extension plates are driven to synchronously and radially move inwards in the radial clamping channel by the driving ring sleeve in a rotating mode, the lower extension plates drive the support connecting plates and the side limiting plates to synchronously and radially move inwards on the annular abutting groove, so that the inner side surfaces of the plurality of side limiting plates synchronously abut against the outer sides of the periphery of the rotary clamping ring body to realize radial limiting, then the positioning gland is arranged around the upper end of the rudder stock body, so that the periphery of the lower end of the positioning gland abuts against the periphery of the upper end of the rotary clamping ring body, the rotary clamping ring body stably rotates in an annular region formed by the plurality of support connecting plates, the plurality of side limiting plates and the positioning gland, and the assembly flexibility is improved due to the fact that the adaptive size can be adjusted.
Description
Technical Field
The invention relates to a radial multipoint adjusting abutting type rudder bearing.
Background
The rudder bearing is an important device in a ship rudder system, and bears axial and radial loads from a rudder stock and a rudder blade so as to ensure that the rudder blade rotates left and right along with the rudder stock, thereby changing the course of the ship or keeping the ship in straight line navigation; the rudder stock is a shaft for rotating the rudder blade and is used for bearing and transmitting force acting on the rudder blade and force of the rudder for steering the rudder device, namely the rudder blade is rotated by the rudder stock, and the rudder blade bearing reacting force on the rudder blade to steer the ship; the current rudder bearing cup joints the outside all around at the rudderstock, the rudder bearing is used for the spacing rudderstock that supports, make the rudderstock carry out stable rotation in the middle of the rudder bearing, generally be the joint ring body that sets up a rotation usefulness in the outside all around of rudderstock, then set up an annular butt groove all around in the inboard of rudder bearing, so rotate on annular butt groove through the joint ring body, but in actual production and assembling process, in case the size in joint ring body and annular butt groove takes place the variation, can make assembly failure or structure rock, for example make the rudderstock radially rock on the rudder bearing when the radial length in annular butt groove is on the large side, make the rudderstock can't install with the rudder bearing when the radial length in annular butt groove is on the small side, so make the required precision of technique in actual production and assembling process too high, the degree of difficulty is big, structural stability is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the radial multi-point adjusting butt type rudder bearing is flexible to assemble and stable in structure.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a radial multi-point adjusting butt type rudder bearing comprises a rudder bearing body, a rudder stock body, a positioning gland and a multi-point butt mechanism; the rudder carrier body is of a circular cylindrical structure, and the inner sides of the periphery of the upper end of the rudder carrier body are provided with annular butting grooves; a plurality of radial clamping channels distributed from top to bottom are uniformly arranged in the rudder carrier body below the annular abutting groove, an annular driving groove is jointly formed in the outer side of the lower end of each radial clamping channel, and the annular driving groove is formed in the periphery of the middle of the rudder carrier body; the multipoint abutting mechanism comprises a supporting connecting plate, a side limiting plate, an extending column, a lower extension plate and a driving ring sleeve; a plurality of supporting connecting plates are radially and uniformly arranged on the periphery of the annular abutting groove; the outer sides of the supporting and connecting plates are respectively provided with a side limiting plate; the outer sides of the side limiting plates are respectively provided with an extending column; the extending column is radially and slidably clamped on the annular abutting groove; a lower extension plate is respectively arranged at the lower side of the supporting connection plate; the lower extension plates are respectively connected in the radial clamping channels in a penetrating manner; the driving ring sleeve is rotationally clamped at the outer side of the periphery of the lower end of the rudder bearing body; the driving ring sleeve rotates to drive the plurality of lower extension plates to move radially, and the lower extension plates drive the support connecting plates and the side limiting plates to move radially on the annular abutting grooves; a rotary clamping ring body is fixedly arranged on the outer side of the periphery of the upper part of the rudder stock body; the rudder stock body is installed in the middle of the rudder carrier body in a penetrating manner; the periphery of the lower end of the rotary clamping ring body is rotationally abutted against the upper ends of the plurality of support connecting plates; the outer sides of the periphery of the rotary clamping ring body are rotatably abutted against the inner side surfaces of the plurality of side limiting plates; the locating gland is installed around the upper end of rudder carrier body, rotates the upper end of joint ring body and rotates the butt around the lower extreme of locating gland all around.
Furthermore, the multipoint abutting mechanism also comprises an abutting elastic body, an outer side abutting protrusion and an inner side abutting protrusion; a plurality of abutting elastic bodies are uniformly arranged on the inner side of the radial clamping channel; two ends of the abutting elastic body are respectively fixedly connected between the inner wall of the radial clamping channel and the inner side of the lower extension plate, and the outer end of the abutting elastic body elastically abuts against the lower extension plate outwards; the lower end of the lower extension plate is provided with a transition rod, and the outer end of the transition rod extends into the annular driving groove; the outer ends of the transition rods are respectively provided with an inner side abutting projection; a plurality of outer abutting protrusions are uniformly arranged on the inner sides of the periphery of the upper end of the driving ring sleeve; the outer side abutting protrusions are arranged in the annular driving groove and abut against the outer end faces of the inner side abutting protrusions respectively; the driving ring sleeve rotates to drive the plurality of outer side abutting protrusions to rotate, the outer side abutting protrusions rotate to abut against the inner side abutting protrusions, and the inner side abutting protrusions are driven to move radially in the annular driving grooves.
Furthermore, an annular table board is arranged on the outer side of the periphery of the rudder carrier body; a plurality of longitudinally-arranged thread channels are uniformly arranged on the periphery of the upper end of the annular table board; a pressing locking screw is screwed in each longitudinal thread channel in a threaded manner; the lower end of the pressing locking screw rod is rotationally pressed against the periphery of the upper end of the driving ring sleeve.
Furthermore, the lower ends of the extension columns are respectively provided with a sliding latch; the periphery of the annular abutting groove is radially provided with a sliding clamping groove respectively; the sliding latch is radially and slidably clamped on the sliding clamping groove.
Furthermore, two sides of the lower end of the driving ring sleeve are respectively provided with a positioning rotating block; the outer sides of the periphery of the lower end of the rudder carrier body are provided with annular clamping grooves; the driving ring sleeve is rotationally clamped on the annular clamping grooves on the periphery of the lower end of the rudder bearing body through the positioning rotating blocks on the two sides of the lower end.
Furthermore, a plurality of connecting screw rods are uniformly connected to the periphery of the positioning gland in a penetrating manner; a plurality of threaded holes are uniformly formed in the periphery of the upper end of the rudder carrier body; the lower ends of the connecting screw rods are respectively screwed on the threaded holes in a threaded manner.
Further, the side limiting plates are encircled to form a circular structure.
Furthermore, the outer sides around the rotary clamping ring body and the upper and lower peripheries of the rotary clamping ring body are provided with wear-resistant coatings.
The invention has the following beneficial effects:
during assembly, the rotary clamping ring body of the rudder stock body is arranged at the upper ends of the plurality of support connecting plates, then the plurality of lower extension plates are driven to synchronously and radially move inwards in the radial clamping channel by the driving ring sleeve in a rotating mode, the lower extension plates drive the support connecting plates and the side limiting plates to synchronously and radially move inwards on the annular abutting groove, so that the inner side surfaces of the plurality of side limiting plates synchronously abut against the outer sides of the periphery of the rotary clamping ring body to realize radial limiting, then the positioning gland is arranged around the upper end of the rudder stock body, so that the periphery of the lower end of the positioning gland abuts against the periphery of the upper end of the rotary clamping ring body, the rotary clamping ring body stably rotates in an annular region formed by the plurality of support connecting plates, the plurality of side limiting plates and the positioning gland, and the assembly flexibility is improved due to the fact that the adaptive size can be adjusted.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is an enlarged schematic view of the present invention shown in FIG. 1.
FIG. 3 is a schematic diagram of the disassembled structure of FIG. 2 according to the present invention.
FIG. 4 is a schematic structural diagram of the upper end of the rudder bearing body according to the present invention.
Fig. 5 is a schematic structural view of the lower end of the rudder carrier body according to the present invention.
FIG. 6 is a schematic top view of the rotary clamping ring, the support connection plate, and the side limiting plate of the present invention.
FIG. 7 is a schematic top view of the driving collar, the outer abutment protrusion and the inner abutment protrusion of the present invention.
Fig. 8 is a schematic top view of the radial clamping channel on the rudder carrier body according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 8, a radial multi-point adjusting abutting type rudder bearing comprises a rudder bearing body 1, a rudder stock body 2, a positioning gland 4 and a multi-point abutting mechanism 3; the rudder carrier body 1 is of a circular cylindrical structure, and the inner side of the periphery of the upper end of the rudder carrier body 1 is provided with an annular butting groove 11; a plurality of radial clamping channels 12 distributed from top to bottom are uniformly arranged in the rudder carrier body 1 below the annular butting groove 11, an annular driving groove 13 is jointly formed in the outer side of the lower end of each radial clamping channel 12, and the annular driving groove 13 is formed in the periphery of the middle of the rudder carrier body 1; the multipoint abutting mechanism 3 comprises a support connecting plate 31, a side limiting plate 32, an extension column 33, a lower extension plate 34 and a drive ring sleeve 35; a plurality of supporting connection plates 31 are radially and uniformly arranged on the periphery of the annular abutting groove 11; a lateral limiting plate 32 is respectively arranged at the outer side of the supporting connecting plate 31; an extension column 33 is respectively arranged at the outer side of the side limiting plate 32; the extending column 33 is radially and slidably clamped on the annular abutting groove 11; a lower extension plate 34 is respectively arranged at the lower sides of the supporting connection plates 31; the lower extension plates 34 are respectively penetrated and connected in the radial clamping channels 12; the driving ring sleeve 35 is rotationally clamped at the outer side of the periphery of the lower end of the rudder bearing body 1; the driving ring sleeve 35 drives the lower extension plates 34 to move radially in a rotating mode, and the lower extension plates 34 drive the supporting connecting plate 31 and the side limiting plates 32 to move radially on the annular abutting groove 11; a rotary clamping ring body 21 is fixedly arranged on the outer side of the periphery of the upper part of the rudder stock body 2; the rudder stock body 2 is installed in the middle of the rudder carrier body 1 in a penetrating manner; the periphery of the lower end of the rotary clamping ring body 21 is in rotary butt joint with the upper ends of the plurality of support connecting plates 31; the outer sides of the periphery of the rotary clamping ring body 21 are rotatably abutted against the inner side surfaces of the plurality of side limiting plates 32; the positioning gland 4 is arranged around the upper end of the rudder carrier body 1, and the upper end of the rotary clamping ring body 21 is rotated around and abutted against the periphery of the lower end of the positioning gland 4.
As shown in fig. 1 to 8, further, the multipoint abutting mechanism 3 further includes an abutting elastic body 36, an outer abutting projection 38, and an inner abutting projection 37; a plurality of abutting elastic bodies 36 are uniformly arranged on the inner side of the radial clamping channel 12; two ends of the abutting elastic body 36 are respectively and fixedly connected between the inner wall of the radial clamping channel 12 and the inner side of the lower extension plate 34, and the outer end of the abutting elastic body 36 elastically abuts against the lower extension plate 34 outwards; the lower end of the lower extension plate 34 is provided with a transition rod 341, and the outer end of the transition rod 341 extends into the annular driving groove 13; the outer ends of the transition rods 341 are respectively provided with an inner abutting convex 37; a plurality of outer abutting protrusions 38 are uniformly arranged on the inner sides of the periphery of the upper end of the driving ring sleeve 36; the outer abutment projections 38 are fitted in the annular drive groove 13 and abut on the outer end faces of the inner abutment projections 37, respectively; the driving ring sleeve 35 rotates to drive the plurality of outer abutting protrusions 38 to rotate, the outer abutting protrusions 38 rotate to abut against the inner abutting protrusions 37, and the inner abutting protrusions 37 are driven to move radially in the annular driving groove 13.
As shown in fig. 1 to 8, further, an annular table 353 is arranged on the outer side of the periphery of the rudder carrier body 1; a plurality of longitudinally-arranged thread passages 16 are uniformly formed around the upper end of the annular table-board 353; a pressing locking screw 352 is screwed in the longitudinal thread channel 16; the lower end of the pressing locking screw 352 is rotatably pressed against the periphery of the upper end of the driving ring sleeve 35. Further, the lower ends of the extending columns 33 are respectively provided with a sliding latch 331; the periphery of the annular abutting groove 11 is radially provided with a sliding clamping groove 14 respectively; the sliding latch 331 is radially slidably engaged with the sliding latch groove 14. Furthermore, two sides of the lower end of the driving ring sleeve 35 are respectively provided with a positioning rotating block 351; the outer side of the periphery of the lower end of the rudder carrier body 1 is provided with an annular clamping groove 17; the driving ring sleeve 35 is rotatably clamped on the annular clamping groove 17 around the lower end of the rudder carrier body 1 through the positioning rotating blocks 351 on the two sides of the lower end. Furthermore, a plurality of connecting screw rods 41 are uniformly connected to the periphery of the positioning gland 4 in a penetrating manner; a plurality of threaded holes 15 are uniformly formed in the periphery of the upper end of the rudder carrier body 1; the lower ends of the connecting screws 41 are screwed in the threaded holes 15 respectively. Further, the side limiting plates 32 enclose a circular structure. Furthermore, the outer sides of the periphery and the upper and lower peripheries of the rotary clamping ring body 21 are provided with wear-resistant coatings.
In the assembly process of the invention, the rotary clamping ring body 21 of the rudder stock body 2 is arranged at the upper ends of a plurality of supporting connecting plates 31, then, the driving ring sleeve 35 drives the plurality of lower supporting plates 34 to synchronously and radially move inwards in the radial clamping channel 12 in a rotating way, the lower supporting plates 34 drive the supporting connecting plates 31 and the side limiting plates 32 to synchronously and radially move inwards on the annular abutting groove 11, thus, the inner side surfaces of the plurality of lateral limiting plates 32 are synchronously abutted against the outer sides of the periphery of the rotary clamping ring body 21 to realize radial limiting, then the positioning gland 4 is arranged around the upper end of the rudder carrier body 1, so that the periphery of the lower end of the positioning gland 4 is abutted against the periphery of the upper end of the rotary clamping ring body 21, so make rotate joint ring body 21 at the stable rotation in the annular interval that a plurality of support connection board 31, a plurality of lateral part limiting plate 32, location gland 4 enclose, so because the size of adaptation can adjust the flexibility that has improved the assembly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A radial multi-point adjusting butt type rudder bearing is characterized by comprising a rudder bearing body, a rudder stock body, a positioning gland and a multi-point butt mechanism; the rudder carrier body is of a circular cylindrical structure, and the inner sides of the periphery of the upper end of the rudder carrier body are provided with annular butting grooves; a plurality of radial clamping channels distributed from top to bottom are uniformly arranged in the rudder carrier body below the annular abutting groove, an annular driving groove is jointly formed in the outer side of the lower end of each radial clamping channel, and the annular driving groove is formed in the periphery of the middle of the rudder carrier body; the multipoint abutting mechanism comprises a supporting connecting plate, a side limiting plate, an extending column, a lower extension plate and a driving ring sleeve; a plurality of supporting connecting plates are radially and uniformly arranged on the periphery of the annular abutting groove; the outer sides of the supporting connecting plates are respectively provided with a side limiting plate; the outer sides of the side limiting plates are respectively provided with an extending column; the extending column is radially and slidably clamped on the annular abutting groove; a lower extension plate is respectively arranged at the lower side of the supporting connection plate; the lower extension plates are respectively connected in the radial clamping channels in a penetrating manner; the driving ring sleeve is rotationally clamped at the outer side of the periphery of the lower end of the rudder bearing body; the driving ring sleeve rotates to drive the plurality of lower extension plates to move radially, and the lower extension plates drive the support connecting plates and the side limiting plates to move radially on the annular abutting grooves; a rotary clamping ring body is fixedly arranged on the outer side of the periphery of the upper part of the rudder stock body; the rudder stock body is installed in the middle of the rudder carrier body in a penetrating manner; the periphery of the lower end of the rotary clamping ring body is rotationally abutted against the upper ends of the plurality of support connecting plates; the outer sides of the periphery of the rotary clamping ring body are rotatably abutted against the inner side surfaces of the plurality of side limiting plates; the locating gland is installed around the upper end of rudder carrier body, rotates the upper end of joint ring body and rotates the butt around the lower extreme of locating gland all around.
2. The radial multipoint adjustment abutting rudder bearing according to claim 1, characterized in that the multipoint abutting mechanism further comprises an abutting elastic body, an outer abutting projection, an inner abutting projection; a plurality of abutting elastic bodies are uniformly arranged on the inner side of the radial clamping channel; two ends of the abutting elastic body are respectively fixedly connected between the inner wall of the radial clamping channel and the inner side of the lower extension plate, and the outer end of the abutting elastic body elastically abuts against the lower extension plate outwards; the lower end of the lower extension plate is provided with a transition rod, and the outer end of the transition rod extends into the annular driving groove; the outer ends of the transition rods are respectively provided with an inner side abutting projection; a plurality of outer side abutting protrusions are uniformly arranged on the inner sides of the periphery of the upper end of the driving ring sleeve respectively; the outer side abutting protrusions are arranged in the annular driving groove and abut against the outer end faces of the inner side abutting protrusions respectively; the driving ring sleeve rotates to drive the plurality of outer side abutting protrusions to rotate, the outer side abutting protrusions rotate to abut against the inner side abutting protrusions, and the inner side abutting protrusions are driven to move radially in the annular driving grooves.
3. The radial multipoint adjusting abutting type rudder bearing according to claim 2, characterized in that an annular table top is arranged on the outer side of the periphery of the rudder bearing body; a plurality of longitudinally-arranged thread channels are uniformly arranged on the periphery of the upper end of the annular table board; a pressing locking screw is screwed in each longitudinal thread channel in a threaded manner; the lower end of the pressing locking screw rod is rotationally pressed against the periphery of the upper end of the driving ring sleeve.
4. The radial multi-point adjustable abutting rudder bearing according to claim 1, wherein the lower ends of the extension columns are respectively provided with a sliding latch; the periphery of the annular abutting groove is radially provided with a sliding clamping groove respectively; the sliding latch is radially and slidably clamped on the sliding clamping groove.
5. The radial multipoint adjusting abutting type rudder bearing according to claim 1, wherein two sides of the lower end of the driving ring sleeve are respectively provided with a positioning rotating block; the outer sides of the periphery of the lower end of the rudder carrier body are provided with annular clamping grooves; the driving ring sleeve is rotationally clamped on the annular clamping grooves on the periphery of the lower end of the rudder bearing body through the positioning rotating blocks on the two sides of the lower end.
6. The radial multipoint adjusting abutting rudder bearing according to claim 1, characterized in that a plurality of connecting screws are evenly threaded around the positioning gland; a plurality of threaded holes are uniformly formed in the periphery of the upper end of the rudder carrier body; the lower ends of the connecting screw rods are respectively screwed on the threaded holes in a threaded manner.
7. Radial multi-point adjustment abutting rudder bearing according to claim 1, characterised in that the side limit plates enclose a circular structure.
8. The radial multi-point adjusting butt type rudder bearing according to claim 1, wherein wear-resistant coatings are arranged on the outer side of the periphery, the upper periphery and the lower periphery of the rotary clamping ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149275.6A CN114455054A (en) | 2022-02-18 | 2022-02-18 | Radial multi-point adjustment butt type rudder bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149275.6A CN114455054A (en) | 2022-02-18 | 2022-02-18 | Radial multi-point adjustment butt type rudder bearing |
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| Publication Number | Publication Date |
|---|---|
| CN114455054A true CN114455054A (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210149275.6A Pending CN114455054A (en) | 2022-02-18 | 2022-02-18 | Radial multi-point adjustment butt type rudder bearing |
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| CN (1) | CN114455054A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852307A (en) * | 2022-05-11 | 2022-08-05 | 东台友铭船舶配件有限公司 | Marine rapid Assembly structure |
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| CN113120209A (en) * | 2021-04-20 | 2021-07-16 | 东台友铭船舶配件有限公司 | Clamping positioning type rudder bearing |
| CN113135281A (en) * | 2021-04-20 | 2021-07-20 | 东台友铭船舶配件有限公司 | Positioning fastening type rudder bearing |
| CN215475681U (en) * | 2021-08-10 | 2022-01-11 | 东台市海鹏船舶配件有限公司 | Rotary driving type marine rudder bearing |
-
2022
- 2022-02-18 CN CN202210149275.6A patent/CN114455054A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078187A (en) * | 2016-08-16 | 2016-11-09 | 东台市海鹏船舶配件有限公司 | A kind of novel device for installing of screw shaft of ship hydraulic nut |
| CN111661301A (en) * | 2020-06-17 | 2020-09-15 | 东台市海鹏船舶配件厂 | Built-in rudder bearing rudder stock structure for ship |
| CN111661300A (en) * | 2020-06-17 | 2020-09-15 | 东台市海鹏船舶配件厂 | Rotary butt type rudder carrier rudder stock structure for ship |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852307A (en) * | 2022-05-11 | 2022-08-05 | 东台友铭船舶配件有限公司 | Marine rapid Assembly structure |
| CN114852307B (en) * | 2022-05-11 | 2024-01-16 | 东台友铭船舶配件有限公司 | Marine quick assembly structure |
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Application publication date: 20220510 |