CN103538700B - A kind of deep water navigation mark bidding bitt stopper and cast method - Google Patents
A kind of deep water navigation mark bidding bitt stopper and cast method Download PDFInfo
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- CN103538700B CN103538700B CN201310523985.1A CN201310523985A CN103538700B CN 103538700 B CN103538700 B CN 103538700B CN 201310523985 A CN201310523985 A CN 201310523985A CN 103538700 B CN103538700 B CN 103538700B
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- screw mandrel
- cable
- deep water
- bidding
- navigation mark
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Abstract
The invention discloses a kind of deep water navigation mark bidding bitt stopper and cast method, it is characterized in that, bitt stopper comprises frame, be arranged on only cable portion and the clamping mechanism in frame, described only cable portion comprises the cable groove be positioned at above frame, cable groove inwall side is vertically provided with a strap, and cable groove inwall opposite side is relatively set with an ambulatory splint, and described clamping mechanism is connected with ambulatory splint and ambulatory splint can be driven to move toward strap direction.Described casting in method have employed above-mentioned bitt stopper and carries out only cable and cable laying.It is simple that the present invention has structure, and easy to operate, flexible adjustment, at utmost can improve the advantage of channel buoy bidding safety factor.
Description
Technical field
The present invention relates to channel maintenance technical field, specifically relate to a kind of deep water navigation mark bidding bitt stopper and cast method.
Background technology
Channel buoy (abbreviation navigation mark) is one of most important aids to navigation, is described as " eyes " of ship's navigation, ensures navigation safety, first must ensure the normal performance of navigation mark navaid usefulness.
After the 175m retaining of reservoir area of Three Gorges, Fuling below Li Du progressively implements fairway innovation and ship's routing, and navigational aids planning density increases, increasing number, and establish buoy along with reservoir operation operation plan needs frequently to move shore beacon with moving, navigation mark work capacity significantly increases.Meanwhile, retaining makes the reservoir area channel depth of water increase, and the buoy of part section first wife's cloth becomes depth float, especially near bridge district and isolated middle of the river reef.
The method that reservoir area channel buoy is arranged now mainly contains to hang manages and casts method two kinds.Wherein hang and manage to have employed for cable hook as bidding accessory appliances, before bidding, same needs has tied moorstone and marker ship, and hang manage accessory appliances for cable hook Maintenance Quality of Aids to Navigation strand close moorstone is hung in bow, arrive the appropriate position, downstream of predetermined mark, on relieving marker ship is freely bubbled through the water column by it, take hooking for grasp at the cable of moorstone simultaneously, head of living after one, the cable alive for grasp being wound around 4 to 5 circles along back direction on checking bollard by special messenger takes, then bidding wirerope is shut taking-up from strand, after cable of living for grasp is stressed, hang over for one, grasp nose dorsad on the checking bollard of another side again.After above-mentioned operation completes, make Maintenance Quality of Aids to Navigation slowly up, along journey, bidding wirerope is progressively dropped in water from repair ship deck, navigation channel, after ships and light boats arrival casts position, to unclamp for grasp cable alive, namely moorstone is deviate to fall into the water from for grasp voluntarily, and buoy upwards moves on at the draw end of wirerope and reaches predetermined mark, and namely bidding work complete.Buoy hangs manages by for the use of cable hook, its cast in process adopt first cable laying after the method for sinker stone in bidding safety and Position location accuracy, have certain improvement.But due to many and complicated for cable hook operational sequence in actual bidding application, task large at maintenance workload is heavy, work efficiency is on the contrary not as casting method.Equally, hang and manage larger security risk is still had for bidding work, decontroling marker ship at Maintenance Quality of Aids to Navigation and go upward in the process cast a little needs, along journey, bidding wirerope is put into water, because wirerope is longer, can not sink under water completely immediately again, be easy to the rudder system and the Propeller Blade that kink Maintenance Quality of Aids to Navigation, cause the damage of dan boat and topple.For avoiding the generation of this situation, employing hang manage to arrange buoy time, the mode that most of Maintenance Quality of Aids to Navigation takes reversing is carried out, and work efficiency is lower.Therefore, the moving to establish and more still have employed the method for casting of current reservoir area depth float.
The method of casting is traditional shallow water buoy bidding method, has location standard, safeguards convenient, simple to operate advantage.Bidding wirerope front end should be tied moorstone before casting, rear end is tied in marker ship bitt, being closed by Maintenance Quality of Aids to Navigation strand to be suspended under Maintenance Quality of Aids to Navigation bow leads checking bollard by moorstone, strand is caught hold of wirerope by special messenger after closing and to be lived head, and all the other wireropes is made in order rear neatly to coil on Maintenance Quality of Aids to Navigation deck.Prior estimation casts well a little to the Distance geometry approximate location of mark, after buoy to be tied up and is dragged to desired location by Maintenance Quality of Aids to Navigation, lightens restrictions on, allows marker ship freely bubble through the water column; Then all the other personnel retreat to rapidly rear, Maintenance Quality of Aids to Navigation deck, only stay a people pine cable at strand pass place, instruction is cast once Deng captain, pine cable people loosens rapidly in hand the head upwards shake and shut from strand by wirerope of living, moorstone enters water with the wirerope that deck is coiled simultaneously, and under the traction of wirerope, buoy drift is to predetermined mark, and bidding completes.
But, after the retaining of reservoir area, fairway depth increases; buoy anchor hawser is then doubled and redoubled; the method that casts exists larger potential safety hazard in bidding process; casting moment must shut from Maintenance Quality of Aids to Navigation strand by wirerope manually rapidly, due to moorstone and wirerope enter that water process is uncontrollable and speed is very fast, therefore require that people's technology of trembling cable is very skilled; otherwise wirerope can not be shut from strand in time, cause wirerope lash ship machine, cast failure even injures operating personal.In addition due to wirerope is oversize and all dish above deck, in sinking watching, wirerope can violent spring, causes the danger of hurting sb.'s feelings or personnel being entangled in river.
In sum, existing reservoir area mainly adopts the method for casting to carry out (deep water) bidding, in bidding process, easily cause wirerope lash ship machine, cast failure and even injure operating personal, or wirerope acutely can bounce and then cause the danger of hurting sb.'s feelings or personnel being entangled in river, there is larger potential safety hazard.
Summary of the invention
For above-mentioned the deficiencies in the prior art, technical matters to be solved by this invention is: how to provide a kind of structure simple, can improve the deep water navigation mark bidding bitt stopper of channel buoy bidding safety factor, and a kind of simple to operate, what safety was high put anchor casts method.
In order to solve the problems of the technologies described above, in the present invention, have employed following technical scheme:
A kind of deep water navigation mark bidding bitt stopper, it is characterized in that, comprise frame, be arranged on only cable portion and the clamping mechanism in frame, described only cable portion comprises the cable groove be positioned at above frame, cable groove inwall side is vertically provided with a strap, and cable groove inwall opposite side is relatively set with an ambulatory splint, and described clamping mechanism is connected with ambulatory splint and ambulatory splint can be driven to move toward strap direction.
Bitt stopper of the present invention has the only cable portion of cable groove owing to being provided with, during use, steel cable passes from stopping cable portion, and cable groove plays the spacing effect in left and right to steel cable, prevents steel cable double swerve, improves safety.Be provided with clamping mechanism in device, realize the clamping to steel cable in cable groove, when needs put anchor time, unclamp wirerope by clamping mechanism again carry out putting anchor, conveniently put the control of anchor process.
As optimization, further, in described only cable portion, the cable groove being positioned at the two ends of ambulatory splint and strap is also respectively provided with a guide wheel, and described guide wheel is installed in rotation on cable groove by being positioned at horizontally disposed rotating shaft in the middle part of it.
The setting of guide wheel, can reduce friction, guides the wirerope better movement of channel buoy, makes to put anchor watch safety fast.
Further, in described only cable portion, port, cable groove two ends is also respectively provided with a pair guide rod in herringbone.Like this, play spacing guiding function further to wirerope, placement wirerope rubs with cable groove two ends port because of double swerve and damages.
As optimization, in described only cable portion, the side that described strap is relative with ambulatory splint adopts high-abrasive material to obtain and has the vertical anti-skidding striped arranged.
Like this, strap and ambulatory splint can play better Clamping force and better resistance to abrasion to the wirerope of channel buoy.
As optimization, wherein, described clamping mechanism, comprise orienting lug, screw mandrel and motor, described orienting lug one end is fixedly connected with described ambulatory splint, the other end slidably horizontal hole is worn and is bearing in one and is fixed in the guide holder of frame, the inside, one end that orienting lug is supported on guide holder is had horizontally disposed tapped bore and is spun by one end of tapped bore and described screw mandrel, the screw mandrel other end is rotatably supported in frame, described motor to be fixed in frame and to be connected with screw rod transmission with the synchronous pulley be set on screw mandrel by belt, screw mandrel can be driven after described electric motor starting to rotate and then drive orienting lug parallel motion.
Like this, in described clamping mechanism, have employed the transmission that feed screw nut pair carries out power, screw mandrel rotating can be controlled by controlling motor during use, drive orienting lug to do displacement movement before and after level, thus control ambulatory splint and unclamp to the motion clamping of strap direction or counter motion, thus control the wirerope of channel buoy cast process, this force transmission mechanism structure is simple and effectively, ensure that the reliable of control.Meanwhile, motor can use Long-distance Control, thus in the motion compared with distance control motor, and then people and wirerope are separated, stronger ensure that bidding safety.
As further improvement, the present invention also comprises gripping power force regulating mechanism, described gripping power force regulating mechanism comprises the overall gland for drum-shaped, gland open end to be fixed in frame and to form spring fitting chamber in inside, screw mandrel passes frame movably away from one end of orienting lug and extends in spring fitting chamber, also coil spring is provided with in spring fitting chamber, coil spring one end is connected on screw mandrel rotationally, and the other end is connected on the adjusting screw(rod) that screw thread is rotatably connected on the closed end of gland.
After such improvement, when being clamped toward the motion of strap direction by electric machine control ambulatory splint, after steel rope is jammed, motor continues force, screw mandrel can be caused toward moving away from ambulatory splint direction, and then compression coil spring, be delivered on ambulatory splint by helical spring pressure by screw mandrel, realize the elastic compression to steel rope.Like this, the setting of gripping power force regulating mechanism, can not only ensure that the present invention can apply in a flexible way at the wirerope of different wire diameter, also can play better protective effect to the screw mandrel of clamping mechanism of the present invention, make the present invention more durable in use.Meanwhile, by rotating adjusting screw(rod), the adjustment to gripping power size can be realized quickly and easily.
As a step improvement again, in described gripping power force regulating mechanism, described helical spring one end is connected to rotationally by a thrust ball bearing on a round platform on screw mandrel.
When utilizing the present invention to carry out bidding, screw mandrel needs continuous print forward or reverse, by coil spring and and screw mandrel between thrust ball bearing is set, avoid screw mandrel rotate time rotary torsion be directly passed to coil spring, permanent destruction is caused to coil spring.So arranging of thrust ball bearing plays a protective role to coil spring.
As improvement, described screw mandrel is also fixedly installed the signal panels of the running stroke for detecting screw mandrel parallel motion.
Like this, signal panels detect the horizontal displacement of screw mandrel, and the horizontal displacement of screw mandrel is equal to the length distance compressed by screw mandrel with spring, and the compacted degree of steel rope levied by this parameter scale.During such compression, signal panels detect that screw mandrel miles of relative movement reaches setpoint distance, now show that steel rope is compacted or be in releasing orientation, just can control motor stalls, finishing control process.
As improvement, the present invention also comprises Digiplex, and described Digiplex is connected with described motor and described signal panels communication.Like this, utilize remote controller to carry out wireless remote control control to motor, guarantee that controllers is away from scene, at utmost improves safety.
What the invention also discloses a kind of deep water navigation mark bidding casts method, and its feature is, when casting moorstone, adopts the bitt stopper of said structure clamp or unclamp wirerope.Like this, when putting anchor, bitt stopper may be used for avoiding steel rope to upspring or rocking, and operating personal can remote control, improves safety.
In sum, it is simple that the present invention has structure, and easy to operate, flexible adjustment, at utmost can improve the advantage of channel buoy bidding safety factor.
Accompanying drawing explanation
Fig. 1 is the lateral plan of deep water navigation mark bidding bitt stopper of the present invention.
Fig. 2 is A-A cutaway view in Fig. 1.
Fig. 3 is the birds-eye view of deep water navigation mark bidding bitt stopper of the present invention.
Fig. 4 is the block diagram of deep water navigation mark bidding bitt stopper of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
During concrete enforcement, as shown in Figures 1 to 4, a kind of deep water navigation mark bidding bitt stopper, comprise frame 1, be arranged on only cable portion and the clamping mechanism in frame 1, described only cable portion comprises the cable groove be positioned at above frame 1, and cable groove inwall side is vertically provided with a strap 2, cable groove inwall opposite side is relatively set with an ambulatory splint 3, and described clamping mechanism is connected with ambulatory splint 3 and ambulatory splint 3 can be driven to move toward strap 2 direction.In described only cable portion, the cable groove being positioned at the two ends of ambulatory splint 3 and strap 2 is also respectively provided with a guide wheel 4, and described guide wheel 4 is installed in rotation on cable groove by being positioned at horizontally disposed rotating shaft in the middle part of it.In described only cable portion, port, cable groove two ends is also respectively provided with a pair guide rod 5 in herringbone.In described only cable portion, the side that described strap 2 is relative with ambulatory splint 3 adopts high-abrasive material to obtain and has the vertical anti-skidding striped arranged.
During concrete enforcement, described clamping mechanism, comprise orienting lug 6, screw mandrel 7 and motor (not shown in FIG.), described orienting lug 6 one end is fixedly connected with described ambulatory splint 3, the other end slidably horizontal hole is worn and is bearing in a guide holder being fixed on frame 1, the inside, one end that orienting lug 6 is supported on guide holder is had horizontally disposed tapped bore and is spun by one end of tapped bore and described screw mandrel 7, screw mandrel 7 other end is rotatably supported in frame 1, described motor to be fixed in frame 1 and to be in transmission connection by belt and the synchronous pulley be set on screw mandrel 7 and screw mandrel 7, screw mandrel 7 can be driven after described electric motor starting to rotate and then drive orienting lug 6 parallel motion.During concrete enforcement, the present invention also comprises gripping power force regulating mechanism, described gripping power force regulating mechanism comprises the overall gland 8 for drum-shaped, gland 8 open end to be fixed in frame 1 and to form spring fitting chamber in inside, screw mandrel 7 passes frame 1 movably away from one end of orienting lug 6 and extends in spring fitting chamber, coil spring 9 is also provided with in spring fitting chamber, coil spring 9 one end is connected on screw mandrel 7 rotationally, and the other end is connected on the adjusting screw(rod) 10 that screw thread is rotatably connected on the closed end of gland 8.In described gripping power force regulating mechanism, one end of described coil spring 9 is connected to rotationally by a thrust ball bearing on a round platform on screw mandrel 7.Described screw mandrel 7 is also fixedly installed the signal panels 11 of the running stroke for detecting screw mandrel 7 parallel motion.During concrete enforcement, the present invention also comprises remote controller, and described remote controller is connected with described motor and described signal panels 11 communication.
During concrete enforcement, described signal panels 11 can be arranged laser range sensor of the prior art (as GHLM-07B laser range sensor) or ultrasonic transducer (utilizing ultrasonic ranging principle) detects the horizontal displacement of screw mandrel 7.The data recorded by laser range sensor or ultrasonic transducer are compared with setting value in the control module of remote controller, when data measured and this displacement setting value are surely closed, thus control the stall of motor.In addition, described signal panels 11 can also adopt travel switch of the prior art to realize, by arranging travel switch on signal panels, then in screw mandrel 7 horizontal displacement interval, two ends arrange corresponding detection projection, when screw mandrel 7 arrives this position, detect the action of protruding touching travel switch, and then realize collection and the transmission of signal, and then rely on signal control motor stall.
Deep water navigation mark bidding bitt stopper of the present embodiment, described orienting lug 6 one end is fixedly connected with described ambulatory splint 3, orienting lug 6 and a movable screw mandrel 7 meshing.During use (as shown in Figure 2), orienting lug 6 sway (the rotating through of screw mandrel 7 be connected to screw mandrel 7 and motor upper driving sprocket wheel realize) can be promoted when driven by motor screw mandrel 7 rotates, thus action clamping mechanism being clamped and loosens.
Clamping process:
Drive screw mandrel 7 rotate forward and promote orienting lug 6 and ambulatory splint 3 moves to left (direction is based on Fig. 2) when motor rotates forward, when clamping wirerope, orienting lug 6 and ambulatory splint 3 stop mobile, now, motor is rotated further and screw mandrel 7 beginning level is moved right, meanwhile, round platform on screw mandrel 7 promotes thrust ball bearing and compresses coil spring 9 and then produce elastic force (elastic force of coil spring 9 is conducted by screw mandrel 7, and then wirerope is clamped), the displacement of signal panels 11 pairs of screw mandrels 7 detects, when the right displacement of screw mandrel 7 level equals setting shift value, be judged as clamping, namely motor stalling is controlled.
Loosen process contrary with above-mentioned clamping process.
In addition, in this detailed description of the invention, use sprocket wheel and screw mandrel 7 transmission to be conducive to structure of the present invention and arrange by the separate form that deck is upper and lower, improve the reliability of transmission and maintain easily.
Deep water navigation mark bidding cast a method, when casting moorstone, adopting the bitt stopper of structure in above-mentioned embodiment to clamp or unclamping wirerope.Concrete operations are as follows:
1, before casting moorstone, buoy wirerope front end has been tied moorstone, buoy wirerope rear end has been tied in marker ship bitt.
2, close under bow moorstone being suspended to Maintenance Quality of Aids to Navigation leads checking bollard by the strand of Maintenance Quality of Aids to Navigation, strand utilizes described bitt stopper to clamp wirerope and to live head after closing, and all the other steel wireropes is made in order rear neatly to coil on Maintenance Quality of Aids to Navigation deck.
3, after buoy to be tied up and is dragged to mark by Maintenance Quality of Aids to Navigation, first marker ship is put down from Maintenance Quality of Aids to Navigation, allow marker ship freely bubble through the water column.
4, utilize bitt stopper described in remote controller Long-distance Control to make moorstone shut from strand to loosen wirerope head alive, meanwhile, moorstone enters water with the wirerope that Maintenance Quality of Aids to Navigation deck is coiled, and marker ship, under the traction of wirerope, shifts to mark, and bidding completes.
The channel buoy that this detailed description of the invention relates to cast method, by utilize described in remote controller Long-distance Control bitt stopper clamping or loosen wirerope, make in bidding process, people and wirerope to be separated, can enough ensure bidding safety.
Claims (8)
1. a deep water navigation mark bidding bitt stopper, it is characterized in that, comprise frame, be arranged on only cable portion and the clamping mechanism in frame, described only cable portion comprises the cable groove be positioned at above frame, cable groove inwall side is vertically provided with a strap, and cable groove inwall opposite side is relatively set with an ambulatory splint, and described clamping mechanism is connected with ambulatory splint and ambulatory splint can be driven to move toward strap direction; In described only cable portion, the cable groove being positioned at the two ends of ambulatory splint and strap is also respectively provided with a guide wheel, and described guide wheel is installed in rotation on cable groove by being positioned at horizontally disposed rotating shaft in the middle part of it; In described only cable portion, the side that described strap is relative with ambulatory splint adopts high-abrasive material to obtain and has the vertical anti-skidding striped arranged.
2. deep water navigation mark bidding bitt stopper as claimed in claim 1, is characterized in that, in described only cable portion, port, cable groove two ends is also respectively provided with a pair guide rod in herringbone.
3. deep water navigation mark bidding bitt stopper as claimed in claim 1, it is characterized in that, described clamping mechanism, comprise orienting lug, screw mandrel and motor, described orienting lug one end is fixedly connected with described ambulatory splint, the other end slidably horizontal hole is worn and is bearing in one and is fixed in the guide holder of frame, the inside, one end that orienting lug is supported on guide holder is had horizontally disposed tapped bore and is spun by one end of tapped bore and described screw mandrel, the screw mandrel other end is rotatably supported in frame, described motor to be fixed in frame and to be connected with screw rod transmission with the synchronous pulley be set on screw mandrel by belt, screw mandrel can be driven after described electric motor starting to rotate and then drive orienting lug parallel motion.
4. deep water navigation mark bidding bitt stopper as claimed in claim 3, it is characterized in that, also comprise gripping power force regulating mechanism, described gripping power force regulating mechanism comprises the overall gland for drum-shaped, gland open end to be fixed in frame and to form spring fitting chamber in inside, screw mandrel passes frame movably away from one end of orienting lug and extends in spring fitting chamber, also coil spring is provided with in spring fitting chamber, coil spring one end is connected on screw mandrel rotationally, the other end is connected on the adjusting screw(rod) that screw thread is rotatably connected on the closed end of gland.
5. deep water navigation mark bidding bitt stopper as claimed in claim 4, is characterized in that, in described gripping power force regulating mechanism, described helical spring one end is connected to rotationally by a thrust ball bearing on a round platform on screw mandrel.
6. deep water navigation mark bidding bitt stopper as claimed in claim 3, is characterized in that, described screw mandrel being also fixedly installed the signal panels of the running stroke for detecting screw mandrel parallel motion.
7. deep water navigation mark bidding bitt stopper as claimed in claim 6, it is characterized in that, also comprise Digiplex, described Digiplex is connected with described motor and described signal panels communication.
8. deep water navigation mark bidding cast a method, it is characterized in that, when casting moorstone, adopting the deep water navigation mark bidding bitt stopper of claim any one of claim 1 to 6 clamp or unclamp wirerope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523985.1A CN103538700B (en) | 2013-10-30 | 2013-10-30 | A kind of deep water navigation mark bidding bitt stopper and cast method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523985.1A CN103538700B (en) | 2013-10-30 | 2013-10-30 | A kind of deep water navigation mark bidding bitt stopper and cast method |
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| Publication Number | Publication Date |
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| CN103538700A CN103538700A (en) | 2014-01-29 |
| CN103538700B true CN103538700B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310523985.1A Expired - Fee Related CN103538700B (en) | 2013-10-30 | 2013-10-30 | A kind of deep water navigation mark bidding bitt stopper and cast method |
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| CN (1) | CN103538700B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803022B (en) * | 2014-03-18 | 2016-05-11 | 长江重庆航道局 | A kind of hawser apparatus |
| NO343926B1 (en) * | 2017-03-10 | 2019-07-08 | Shm Solutions As | Box to accommodate a wire and chain stopper |
| CN110525600B (en) * | 2019-08-19 | 2024-04-05 | 天津市水产研究所 | Simple anchor stone transportation and delivery device and application method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2490876A (en) * | 1946-07-25 | 1949-12-13 | George S Lewis | Marking buoy |
| US6094783A (en) * | 1998-06-11 | 2000-08-01 | 1217145 Ontario Inc. | Rope clamp |
| CN101711317A (en) * | 2007-06-12 | 2010-05-19 | 奥迪姆公司 | Locking device |
| CN101758906A (en) * | 2009-10-24 | 2010-06-30 | 成都峻峰科技开发有限公司 | Eccentric continuous clamping and pulling device |
| CN202107074U (en) * | 2011-04-26 | 2012-01-11 | 无棣方正福利不锈钢制品有限公司 | Rope gripper |
| CN202379057U (en) * | 2011-12-05 | 2012-08-15 | 方正国际软件有限公司 | Automatic avoidance device for channel buoys |
| CN203511989U (en) * | 2013-10-30 | 2014-04-02 | 长江重庆航道局 | Deepwater fairway buoy arranging bitt stopper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10287293A (en) * | 1997-04-14 | 1998-10-27 | Mitsubishi Heavy Ind Ltd | Submarine prospecting observatory equipment |
-
2013
- 2013-10-30 CN CN201310523985.1A patent/CN103538700B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2490876A (en) * | 1946-07-25 | 1949-12-13 | George S Lewis | Marking buoy |
| US6094783A (en) * | 1998-06-11 | 2000-08-01 | 1217145 Ontario Inc. | Rope clamp |
| CN101711317A (en) * | 2007-06-12 | 2010-05-19 | 奥迪姆公司 | Locking device |
| CN101758906A (en) * | 2009-10-24 | 2010-06-30 | 成都峻峰科技开发有限公司 | Eccentric continuous clamping and pulling device |
| CN202107074U (en) * | 2011-04-26 | 2012-01-11 | 无棣方正福利不锈钢制品有限公司 | Rope gripper |
| CN202379057U (en) * | 2011-12-05 | 2012-08-15 | 方正国际软件有限公司 | Automatic avoidance device for channel buoys |
| CN203511989U (en) * | 2013-10-30 | 2014-04-02 | 长江重庆航道局 | Deepwater fairway buoy arranging bitt stopper |
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| CN103538700A (en) | 2014-01-29 |
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