CN104443274A - Reeling device for ship mooring rope - Google Patents

Reeling device for ship mooring rope Download PDF

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Publication number
CN104443274A
CN104443274A CN201410680115.XA CN201410680115A CN104443274A CN 104443274 A CN104443274 A CN 104443274A CN 201410680115 A CN201410680115 A CN 201410680115A CN 104443274 A CN104443274 A CN 104443274A
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wind2
housing
main shaft
cover
retracting
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CN201410680115.XA
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CN104443274B (en
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郑雄胜
李静敏
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Zhejiang Ocean University ZJOU
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Zhejiang Ocean University ZJOU
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Abstract

The invention provides a reeling device for a ship mooring rope and belongs to the technical field of ship equipment. The problem that an existing ship mooring rope is difficult to use is solved. The reeling device for the ship mooring rope comprises a gland and a cylinder shell. The lower side face of the gland is perpendicularly and fixedly connected with a main shaft, a connecting hole is formed in the bottom face of the shell, the lower end of the main shaft is axially inserted in the connecting hole in a sliding mode, the main shaft is sleeved with a reeling sleeve, a control mechanism is arranged on the shell, and a locking mechanism capable of fixing the reeling sleeve after the main shaft moves upwards is arranged between the reeling sleeve and the gland. The reeling device for the ship mooring rope is convenient to operate and high in use stability.

Description

A kind of wind2 of ship cable
Technical field
The invention belongs to equipment of Vessel technical field, relate to a kind of wind2 of ship cable.
Background technology
Boats and ships can navigate by water or berth to carry out in waters transporting or the vehicle of operation, has different technical performances, equipment and structural shape by different operatings needs.Boats and ships are made up of mass part, by effect and the purposes of each several part, can comprehensively be summarized as the three parts such as hull, marine powerplant, marine electrical equipment.Hull is the essential part of boats and ships, base portion and superstructure part can be divided into, base portion refers generally to the part of below upper deck, it is the hollow body with given shape surrounded by shell and upper deck, is to ensure that boats and ships have the key component of required buoyancy, seagoing qualities and Hull Strength.Hull is generally used for arranges engine installation, lade, storage fuel oil and fresh water, and arranges other various cabins.Ship deck also must have hawser, fix boats and ships by hawser and stop, ship cable except light specific gravity, intensity are high, shock resistance and resistance to abrasion well except, have withstanding corrosion, resistance to mildew and rot, the resistance to advantage such as to damage by worms.Hawser needs when not using to be wound on fixture usually.
As Chinese invention patent application (application number: 201320368287.4) disclose a kind of ship cable post, comprise base, described base is fixed with forward and backward two cylinders, the top of described cylinder is provided with circular projection, one end of the top articulated linkage of described front cylinder, the other end of described connecting rod is hinged with adapter plate, the interspersed bolt in end of described adapter plate, after described bolt, the sidewall of cylinder is provided with and may be used for reeling and fixing hawser to this hawser post of the jack mated with bolt, but uses and comparatively bother.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of wind2 of ship cable, the wind2 of this ship cable is easy to operate, and stability in use is high.
Object of the present invention realizes by following technical proposal: a kind of wind2 of ship cable, boats and ships comprise deck, it is characterized in that, the barrel cover that described wind2 comprises gland and is connected above deck, the downside of described gland is vertically fixed with main shaft, described housing bottom surface offers connecting bore, the lower end edge of described main shaft slides axially and is plugged in connecting bore, described main shaft is arranged with the retracting cover for spooled cable, housing sidewall offers the through hole passed for hawser, described housing is provided with the steering unit that retracting cover can be driven to rotate, be provided with between described retracting cover and gland and can overlap securing lockable mechanism by furling after main shaft moves up.
One end of hawser is wound on retracting and puts, the other end passes from the through hole of housing, under hawser stationary state, retracting cover can be fixed by lockable mechanism, now hawser cannot be furled or is drawn out, when needing retracting or pull-out hawser, downward force pressure gland, main shaft moves down, the fixation of lockable mechanism to retracting cover is removed, retracting cover is rotated by steering unit, now can by hawser pull-out or retracting, easy to operate, simultaneously because hawser and associated components are all positioned at housing, can not be exposed to the weather, also can prevent foreign matter in hawser, the service life of hawser and the structural stability of wind2 can be improved.
In the wind2 of above-mentioned ship cable, on the lateral wall of described retracting set upper side, circumference is fixed with some strut bars, described strut bar is all arranged along housing radial direction, all track adjusting wheel is rotatably connected at the free end of strut bar, on described case inside wall, circumference offers annular guide groove, and described track adjusting wheel is resisted against on guide groove bottom surface.Because main shaft is connected with housing by lower end, upper end is in vacant state, and hawser retracting is at the middle part of main shaft, and hawser is stressed larger, therefore main shaft is leant by some strut bars and housing sidewall, thus supports main shaft, improves the load-carrying capacity of main shaft, and strut bar is coordinated with housing by track adjusting wheel, reduce friction force when retracting cover rotates.
In the wind2 of above-mentioned ship cable, described lockable mechanism comprises some fixed links in L-type, described housing sidewall offers and somely dodges breach, one end of described fixed link is vertically connected on the downside of gland, the other end inserts along housing radial direction and dodges breach, and on insertion end upper side, there is registration mast, described strut bar is fixed with a ring-type fixing plate, this adapter plate and housing concentric are arranged, on the downside of described adapter plate, circumference offers some knock holees, locking spring is provided with in described connecting bore, under the effect of locking spring, registration mast can be plugged in knock hole.When decontroling gland, main shaft moves up under the effect of locking spring, the upper end of registration mast is resisted against on the downside of adapter plate, now be rotated further retracting cover, registration mast can insert in contiguous knock hole, now furls cover and stops operating, be fixed fixing simultaneously, structure is simple, easy to operate.
In the wind2 of above-mentioned ship cable, rotate in described connecting bore and be plugged with column bump rubber, described bump rubber upper side offers the rectangular spliced eye of cross-sectional plane, the lower end of described main shaft has the rectangular grafting block of cross-sectional plane, the sliding plug of described grafting block is in spliced eye, above-mentioned locking spring is arranged in spliced eye, and the upper end of locking spring is pressed on grafting block downside, lower end is pressed on spliced eye bottom surface, be provided with between described bump rubber and housing and can make bump rubber in set angle, rotate the damper element of row buffering of going forward side by side when furling and overlapping and be fixed.Main shaft is matched with bump rubber by grafting block, namely main shaft can move axially by current buffer block, but can not rotate, facilitate the use of lockable mechanism, and bump rubber can rotate in certain angle relative to housing bottom, namely boats and ships be subject to the instantaneous thrust of current and tensioning hawser time, bump rubber can housing into rotation certain angle relatively, the buffering of damper element can be subject to simultaneously in rotation process, avoid boats and ships to be subject to instantaneous force, improve hull traveling comfort.
In the wind2 of above-mentioned ship cable, described damper element comprises the buffering torsion spring be set on bump rubber, one end of this buffering torsion spring is connected on bump rubber, the other end is connected on connecting bore madial wall, the lateral wall at described bump rubber two ends all has limiting stopper, on the madial wall of described connecting bore two ends, equal circumference offers the position-limited trough of arc, and above-mentioned limiting stopper is slidably connected in position-limited trough.Limiting stopper is connected in position-limited trough, and namely the radian of position-limited trough is the angle that bump rubber can rotate relative to housing.
In the wind2 of above-mentioned ship cable, described steering unit comprises handle, described retracting cover lower end is fixed with driven sprocket, described hull outside wall is fixed with a pipe link, this pipe link is rotatably connected to drive sprocket, described drive sprocket is connected by chain band with driven sprocket, and described handle is connected on drive sprocket.This structure is for furling hawser, and after the fixation of lockable mechanism is removed, manual swinging handle, makes retracting cover rotate by chain gear, certainly in actual application, also can replace handle with motor, improve degree of automation.
In the wind2 of above-mentioned ship cable, described retracting cover adopts high-abrasive material to make, and the chemical composition of described retracting cover is made up of following component by weight percentage: C:0.5-0.6; Mn:6.0-6.2; Si:1.0-1.1; Cr:2.30-2.35; V:0.05-0.09; B:0.03-0.08; Ti:0.01-0.02, N:0.01-0.03, Ce:0.4-0.5, W:0.001-0.003; Mo:0.01-0.02; Surplus is Fe and inevitable impurity; This retracting cover is by adding B, V and N tri-kinds of elements, the FeB chemical compound and the vanadium nitrogen compound that form high hardness also improve to improve steel hardness the resistance to abrasion furling cover, this retracting tackling has following mechanical property: hardness is greater than 58HRC, tensile strength sigma b >=1020Mpa, dynamic ductility α k >=25J/cm2, fracture toughness KIC >=50MPa.m1/2.
Compared with prior art, the wind2 of this ship cable has the following advantages:
1, retracting cover can be rotated by steering unit after pressing down gland, furl cover after release gland can be fixed, easy to operate, simultaneously because hawser and associated components are all positioned at housing, can not be exposed to the weather, also can prevent foreign matter in hawser, the service life of hawser and the structural stability of wind2 can be improved.
2, because main shaft is leant by some strut bars and housing sidewall, thus main shaft is supported, improve the load-carrying capacity of main shaft, and strut bar is coordinated with housing by track adjusting wheel, reduce friction force when retracting cover rotates.
3, due to boats and ships be subject to the instantaneous thrust of current and tensioning hawser time, bump rubber can housing into rotation certain angle relatively, can be subject to the buffering of damper element simultaneously, avoid boats and ships to be subject to instantaneous force, improve hull traveling comfort in rotation process.
4, the chemical composition of retracting cover is made up of following component by weight percentage: C:0.5-0.6; Mn:6.0-6.2; Si:1.0-1.1; Cr:2.30-2.35; V:0.05-0.09; B:0.03-0.08; Ti:0.01-0.02, N:0.01-0.03, Ce:0.4-0.5, W:0.001-0.003; Mo:0.01-0.02; Surplus is Fe and inevitable impurity; Improve the service life of retracting cover greatly, improve safety performance.
Accompanying drawing explanation
Fig. 1 is the structure cutaway view of the wind2 of this ship cable.
Fig. 2 is the A-A cutaway view in Fig. 1.
Fig. 3 is the B-B cutaway view in Fig. 1.
In figure, 1, housing; 11, connecting bore; 12, through hole; 13, guide groove; 14, breach is dodged; 15, position-limited trough; 2, gland; 21, main shaft; 211, grafting block; 3, retracting cover; 31, strut bar; 311, track adjusting wheel; 4, lockable mechanism; 41, fixed link; 411, registration mast; 42, adapter plate; 421, knock hole; 43, locking spring; 5, steering unit; 51, handle; 52, drive sprocket; 53, driven sprocket; 6, bump rubber; 61, spliced eye; 62, torsion spring is cushioned; 63, limiting stopper.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one:
As shown in Figure 1, a kind of wind2 of ship cable, boats and ships comprise deck, the barrel cover 1 that wind2 comprises gland 2 and is connected above deck, the downside of gland 2 is vertically fixed with main shaft 21, bottom surface offers connecting bore 11 to housing 1, the lower end edge of main shaft 21 slides axially and is plugged in connecting bore 11, main shaft 21 is arranged with the retracting cover 3 for spooled cable, housing 1 sidewall offers the through hole 12 passed for hawser, housing 1 is provided with the steering unit 5 that retracting cover 3 can be driven to rotate, be provided with between retracting cover 3 and gland 2 and can will furl the securing lockable mechanism 4 of cover 3 after main shaft 21 moves up.One end of hawser is wound on retracting cover 3, the other end passes from the through hole 12 of housing 1, under hawser stationary state, retracting cover 3 can be fixed by lockable mechanism 4, now hawser cannot be furled or is drawn out, when needing retracting or pull-out hawser, downward force pressure gland 2, main shaft 21 moves down, the fixation of lockable mechanism 4 to retracting cover 3 is removed, retracting cover 3 is rotated by steering unit 5, now can by hawser pull-out or retracting, easy to operate, simultaneously because hawser and associated components are all positioned at housing 1, can not be exposed to the weather, also can prevent foreign matter in hawser, the service life of hawser and the structural stability of wind2 can be improved.
Specifically, composition graphs 2, shown in Fig. 3, on the lateral wall of retracting cover 3 upper end, circumference is fixed with some strut bars 31, strut bar 31 is all arranged along housing 1 radial direction, track adjusting wheel 311 is all rotatably connected at the free end of strut bar 31, on housing 1 madial wall, circumference offers annular guide groove 13, track adjusting wheel 311 is resisted against on guide groove 13 bottom surface, because main shaft 21 is connected with housing 1 by lower end, upper end is in vacant state, and hawser retracting is at the middle part of main shaft 21, and hawser is stressed larger, therefore main shaft 21 is leant with housing 1 sidewall by some strut bars 31, thus main shaft 21 is supported, improve the load-carrying capacity of main shaft 21, and strut bar 31 is coordinated with housing 1 by track adjusting wheel 311, reduce friction force when retracting cover 3 rotates.Steering unit 5 comprises handle 51, retracting cover 3 lower end is fixed with driven sprocket 53, housing 1 lateral wall is fixed with a pipe link, this pipe link is rotatably connected to drive sprocket 52, drive sprocket 52 is connected by chain band with driven sprocket 53, handle 51 is connected in drive sprocket 52, this structure is for furling hawser, after the fixation of lockable mechanism 4 is removed, manual swinging handle 51, makes retracting cover 3 rotate, certainly in actual application by chain gear, also can replace handle 51 with motor, improve degree of automation.
Lockable mechanism 4 comprises some fixed links 41 in L-type, housing 1 sidewall offers and somely dodges breach 14, one end of fixed link 41 is vertically connected on the downside of gland 2, the other end inserts along housing 1 radial direction and dodges breach 14, and on insertion end upper side, there is registration mast 411, strut bar 31 is fixed with a ring-type fixing plate 42, this adapter plate 42 is arranged with housing 1 concentric, on the downside of adapter plate 42, circumference offers some knock holees 421, locking spring 43 is provided with in connecting bore 11, under the effect of locking spring 43, registration mast 411 can be plugged in knock hole 421, when decontroling gland 2, main shaft 21 moves up under the effect of locking spring 43, the upper end of registration mast 411 is resisted against on the downside of adapter plate 42, now be rotated further retracting cover 3, registration mast 411 can insert in contiguous knock hole 421, now furl cover 3 to stop operating, be fixed fixing simultaneously, structure is simple, easy to operate.
Rotate in connecting bore 11 and be plugged with column bump rubber 6, bump rubber 6 upper side offers the rectangular spliced eye of cross-sectional plane 61, the lower end of main shaft 21 has the rectangular grafting block 211 of cross-sectional plane, the sliding plug of described grafting block 211 is in spliced eye 61, locking spring 43 is arranged in spliced eye 61, and the upper end of locking spring 43 is pressed on grafting block 211 downside, lower end is pressed on spliced eye 61 bottom surface, be provided with between bump rubber 6 and housing 1 and can make bump rubber 6 in set angle, rotate the damper element of row buffering of going forward side by side when furling cover 3 and being fixed, main shaft 21 is matched with bump rubber 6 by grafting block 211, namely main shaft 21 can move axially by current buffer block 6, but can not rotate, facilitate the use of lockable mechanism 4, and bump rubber 6 can rotate bottom housing 1 in certain angle, namely boats and ships be subject to the instantaneous thrust of current and tensioning hawser time, bump rubber 6 can turn an angle by housing 1 relatively, the buffering of damper element can be subject in rotation process simultaneously, boats and ships are avoided to be subject to instantaneous force, improve hull traveling comfort.Damper element comprises the buffering torsion spring 62 be set on bump rubber 6, one end of this buffering torsion spring 62 is connected on bump rubber 6, the other end is connected on connecting bore 11 madial wall, the lateral wall at bump rubber 6 two ends all has limiting stopper 63, on the madial wall of connecting bore 11 two ends, equal circumference offers the position-limited trough 15 of arc, limiting stopper 63 is slidably connected in position-limited trough 15, and limiting stopper 63 is connected in position-limited trough 15, and namely the radian of position-limited trough 15 is the angle that bump rubber 6 can rotate relative to housing 1.
Retracting cover 3 adopts high-abrasive material to make, and the chemical composition of retracting cover 3 is made up of following component by weight percentage: C:0.5-0.6; Mn:6.0-6.2; Si:1.0-1.1; Cr:2.30-2.35; V:0.05-0.09; B:0.03-0.08; Ti:0.01-0.02, N:0.01-0.03, Ce:0.4-0.5, W:0.001-0.003; Mo:0.01-0.02; Surplus is Fe and inevitable impurity; This retracting cover is by adding B, V and N tri-kinds of elements, the FeB chemical compound and the vanadium nitrogen compound that form high hardness also improve to improve steel hardness the resistance to abrasion furling cover, this retracting tackling has following mechanical property: hardness is greater than 58HRC, tensile strength sigma b >=1020Mpa, dynamic ductility α k >=25J/cm2, fracture toughness KIC >=50MPa.m1/2.
In the present embodiment, the chemical composition furling cover 3 is made up of following component by weight percentage: C:0.5; Mn:6.0; Si:1.0; Cr:2.30; V:0.05; B:0.03; Ti:0.01, N:0.01, Ce:0.4, W:0.001; Mo:0.01; Surplus is Fe and inevitable impurity.
Embodiment two:
The chemical composition of retracting cover is made up of following component by weight percentage: C:0.6; Mn:6.2; Si:1.1; Cr:2.35; V:0.09; B:0.08; Ti:0.02, N:0.03, Ce:0.5, W:0.003; Mo:0.02; Surplus is Fe and inevitable impurity.
Embodiment three:
The chemical composition of retracting cover is made up of following component by weight percentage: C:0.55; Mn:6.1; Si:1.05; Cr:2.33; V:0.07; B:0.06; Ti:0.015, N:0.02, Ce:0.45, W:0.002; Mo:0.015; Surplus is Fe and inevitable impurity.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as housing 1, connecting bore 11, through hole 12 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.

Claims (10)

1. the wind2 of a ship cable, boats and ships comprise deck, it is characterized in that, the barrel cover (1) that described wind2 comprises gland (2) and is connected above deck, the downside of described gland (2) is vertically fixed with main shaft (21), described housing (1) bottom surface offers connecting bore (11), the lower end edge of described main shaft (21) slides axially and is plugged in connecting bore (11), described main shaft (21) is arranged with the retracting cover (3) for spooled cable, housing (1) sidewall offers the through hole (12) passed for hawser, described housing (1) is provided with the steering unit (5) that retracting cover (3) can be driven to rotate, be provided with between described retracting cover (3) and gland (2) and (3) securing lockable mechanism (4) can be overlapped by furling after main shaft (21) moves up.
2. the wind2 of ship cable according to claim 1, it is characterized in that, on the lateral wall of described retracting cover (3) upper end, circumference is fixed with some strut bars (31), described strut bar (31) is all arranged along housing (1) radial direction, track adjusting wheel (311) is all rotatably connected at the free end of strut bar (31), on described housing (1) madial wall, circumference offers annular guide groove (13), and described track adjusting wheel (311) is resisted against on guide groove (13) bottom surface.
3. the wind2 of ship cable according to claim 2, it is characterized in that, described lockable mechanism (4) comprises some fixed links (41) in L-type, described housing (1) sidewall offers and somely dodges breach (14), one end of described fixed link (41) is vertically connected on the downside of gland (2), the other end inserts along housing (1) radial direction and dodges breach (14), and there is registration mast (411) on insertion end upper side, described strut bar (31) is fixed with a ring-type fixing plate (42), this adapter plate (42) and housing (1) concentric are arranged, on the downside of described adapter plate (42), circumference offers some knock holees (421), locking spring (43) is provided with in described connecting bore (11), under the effect of locking spring (43), registration mast (411) can be plugged in knock hole (421).
4. the wind2 of ship cable according to claim 3, it is characterized in that, rotate in described connecting bore (11) and be plugged with column bump rubber (6), described bump rubber (6) upper side offers the rectangular spliced eye of cross-sectional plane (61), the lower end of described main shaft (21) has the rectangular grafting block (211) of cross-sectional plane, the sliding plug of described grafting block (211) is in spliced eye (61), above-mentioned locking spring (43) is arranged in spliced eye (61), and the upper end of locking spring (43) is pressed on grafting block (211) downside, lower end is pressed on spliced eye (61) bottom surface, be provided with between described bump rubber (6) and housing (1) and can make bump rubber (6) in set angle, rotate the damper element of row buffering of going forward side by side when furling to overlap when (3) are fixed.
5. the wind2 of ship cable according to claim 4, it is characterized in that, described damper element comprises the buffering torsion spring (62) be set on bump rubber (6), one end of this buffering torsion spring (62) is connected on bump rubber (6), the other end is connected on connecting bore (11) madial wall, the lateral wall at described bump rubber (6) two ends all has limiting stopper (63), on the madial wall of described connecting bore (11) two ends, equal circumference offers the position-limited trough (15) of arc, above-mentioned limiting stopper (63) is slidably connected in position-limited trough (15).
6. the wind2 of ship cable according to claim 1, it is characterized in that, described steering unit (5) comprises handle (51), described retracting cover (3) lower end is fixed with driven sprocket (53), described housing (1) lateral wall is fixed with a pipe link, this pipe link is rotatably connected to drive sprocket (52), described drive sprocket (52) is connected by chain band with driven sprocket (53), and described handle (51) is connected on drive sprocket (52).
7. the wind2 of ship cable according to claim 1, it is characterized in that, described retracting cover (3) adopts high-abrasive material to make, and the chemical composition of described retracting cover (3) is made up of following component by weight percentage: C:0.5-0.6; Mn:6.0-6.2; Si:1.0-1.1; Cr:2.30-2.35; V:0.05-0.09; B:0.03-0.08; Ti:0.01-0.02, N:0.01-0.03, Ce:0.4-0.5, W:0.001-0.003; Mo:0.01-0.02; Surplus is Fe and inevitable impurity; This retracting cover is by adding B, V and N tri-kinds of elements, the FeB chemical compound and the vanadium nitrogen compound that form high hardness also improve to improve steel hardness the resistance to abrasion furling cover, this retracting tackling has following mechanical property: hardness is greater than 58HRC, tensile strength sigma b >=1020Mpa, dynamic ductility α k >=25J/cm2, fracture toughness KIC >=50MPa.m1/2.
8. the wind2 of ship cable according to claim 7, is characterized in that, the chemical composition of described retracting cover (3) is made up of following component by weight percentage: C:0.5; Mn:6.0; Si:1.0; Cr:2.30; V:0.05; B:0.03; Ti:0.01, N:0.01, Ce:0.4, W:0.001; Mo:0.01; Surplus is Fe and inevitable impurity.
9. the wind2 of ship cable according to claim 7, is characterized in that, the chemical composition of described retracting cover (3) is made up of following component by weight percentage: C:0.6; Mn:6.2; Si:1.1; Cr:2.35; V:0.09; B:0.08; Ti:0.02, N:0.03, Ce:0.5, W:0.003; Mo:0.02; Surplus is Fe and inevitable impurity.
10. the wind2 of ship cable according to claim 7, is characterized in that, the chemical composition of described retracting cover (3) is made up of following component by weight percentage: C:0.55; Mn:6.1; Si:1.05; Cr:2.33; V:0.07; B:0.06; Ti:0.015, N:0.02, Ce:0.45, W:0.002; Mo:0.015; Surplus is Fe and inevitable impurity.
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CN104149934A (en) * 2014-07-29 2014-11-19 巢湖市银环航标有限公司 Novel bollard for ships
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365872A (en) * 1993-05-07 1994-11-22 Obrinski Bradley A Remote controlled mooring system
CN202558392U (en) * 2012-04-10 2012-11-28 黄传兴 Marine strander
CN203419243U (en) * 2013-06-25 2014-02-05 寿县风顺船舶修造有限责任公司 Ship cable column
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CN203845604U (en) * 2014-05-20 2014-09-24 扬帆集团股份有限公司 Mobile mooring cable reel
CN203922334U (en) * 2014-06-16 2014-11-05 石狮市宏泰船舶修造有限公司 A kind of boats and ships rolling rope device
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CN107953971A (en) * 2017-12-02 2018-04-24 马鞍山海明船舶配件有限公司 A kind of vessel berth pulls in shore device

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