CN214661258U - Hydraulic system and device of anchor chain lifter - Google Patents
Hydraulic system and device of anchor chain lifter Download PDFInfo
- Publication number
- CN214661258U CN214661258U CN202120633774.3U CN202120633774U CN214661258U CN 214661258 U CN214661258 U CN 214661258U CN 202120633774 U CN202120633774 U CN 202120633774U CN 214661258 U CN214661258 U CN 214661258U
- Authority
- CN
- China
- Prior art keywords
- oil
- lifting
- clamping
- limiting
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides an anchor chain lifting mechanism hydraulic system and device. The system comprises a lifting unit, a limiting unit, a clamping unit and an oil supply unit, wherein the lifting unit comprises two lifting oil cylinders which are arranged in parallel, and any lifting oil cylinder is connected with the oil supply unit through a lifting reversing valve; the limiting unit comprises two limiting oil cylinders which are oppositely arranged, and the limiting oil cylinders are connected with the oil liquid supply unit through limiting reversing valves; the clamping unit comprises two clamping oil cylinders which are oppositely arranged, and any clamping oil cylinder is connected with the oil liquid supply unit through a clamping reversing valve; the oil liquid supply unit comprises a hydraulic oil tank, and a one-way quantitative hydraulic oil pump is arranged on an oil outlet pipeline of the hydraulic oil tank. The utility model discloses mainly be applied to marine floating structure and moor or anchor, device compact structure, easy operation, action are reliable, be convenient for install and maintain, and avoided the too big and chain link's of stress that anchor winch capstan winch caused wearing and tearing, can prolong the life of anchor chain.
Description
Technical Field
The utility model relates to an offshore floating structure moors or the anchoring field, particularly, especially relates to an anchor chain lifting mechanism hydraulic system and device.
Background
With the increasing development speed of marine oil and gas resources, floating production systems, such as floating production storage and offloading vessels (FPSOs), are gaining favor in the market, and mooring systems are one of the key facilities of floating production systems, such as FPSOs.
Most ship-type FPSOs or semi-submersible platforms adopt a multi-point mooring system, the traditional mooring system tensioning method is to use equipment such as an anchor machine and a winch which are arranged on a deck of the FPSO or semi-submersible platform for tensioning, and a set of typical tensioning devices comprises a fixed anchor machine, a chain stopper, a chain guider, a hydraulic power unit and a chain locker. Such a device is expensive to purchase and requires frequent maintenance.
Meanwhile, the automation degree of winch traction lifting is low, and most of work needs to be finished manually. In addition, a typical set of equipment occupies a large deck space and is self-weight, severely affecting vessel stability and reducing variable loads on the FPSO or semi-submersible platform.
In addition, the winch capstan causes large bending stresses on the chain and wear on the chain links.
Disclosure of Invention
The utility model provides a use method of anchor chain lifting mechanism hydraulic system, device and device has solved above-mentioned overspeed device tensioner cost of maintenance height, winch pull degree of automation lower, typical equipment volume and dead weight great and easily lead to anchor chain deformation and technical problem such as wearing and tearing. The utility model discloses compact structure, small, light in weight, installation and maintenance cost are low, and have avoided the bending stress that anchor winch capstan winch caused and the wearing and tearing of chain link, prolong the life of anchor chain.
The utility model discloses a technical means as follows:
a hydraulic system of an anchor chain lifter comprises a lifting unit for lifting an anchor chain, a limiting unit and a clamping unit for locking the anchor chain, and an oil liquid supply unit for supplying a transmission medium to the lifting unit, the limiting unit and the clamping unit;
the lifting unit comprises two lifting oil cylinders which are arranged in parallel, and any lifting oil cylinder is connected with the oil liquid supply unit through a lifting reversing valve so as to form an oil liquid loop of the lifting unit;
the limiting unit comprises two limiting oil cylinders which are oppositely arranged, and any limiting oil cylinder is connected with the oil liquid supply unit through a limiting reversing valve so as to form an oil liquid loop of the limiting unit;
the oil liquid supply unit comprises a plurality of oil liquid supply units, wherein each oil liquid supply unit is provided with an oil liquid supply port;
the oil supply unit comprises a hydraulic oil tank, a one-way quantitative hydraulic oil pump is arranged on an oil outlet pipeline of the hydraulic oil tank, and a cooling device and a filtering device are sequentially arranged on an oil return pipeline of the hydraulic oil tank along the backflow direction.
Furthermore, a lifting safety protection device is arranged between the lifting oil cylinder and the lifting reversing valve.
Furthermore, a main oil way safety protection device and a pressure sensor are further arranged on an oil outlet pipeline of the hydraulic oil tank.
Further, an oil temperature and oil level monitoring device is arranged above the hydraulic oil tank.
Further, an air discharging device is arranged above the hydraulic oil tank.
Further, a heating device is arranged inside the hydraulic oil tank.
Furthermore, a check valve and a throttle valve are arranged on an oil applying pipeline of the limiting oil cylinder, after the check valve and the throttle valve are connected in parallel, one end of the check valve is connected with the limiting oil cylinder, and the other end of the check valve is connected with a hydraulic pipeline;
the oil feeding pipeline of the clamping oil cylinder is provided with a check valve and a throttle valve, after the check valve and the throttle valve are connected in parallel, one end of the check valve is connected with the clamping oil cylinder, and the other end of the check valve is connected with a hydraulic pipeline.
An anchor chain lifter device is realized based on any system, and comprises a base, wherein a lifting oil cylinder is arranged above the base in the vertical direction, a piston rod of the lifting oil cylinder is fixedly connected with a movable cross beam, a clamping oil cylinder is fixedly arranged on the movable cross beam, and an anchor chain clamping part is arranged at the tail end of the piston rod of the clamping oil cylinder; the bottom of the fixed end of the lifting oil cylinder is provided with a limiting oil cylinder, and the tail end of a piston rod of the limiting oil cylinder is provided with an anchor chain clamping part.
Furthermore, a chain guide device is arranged in the middle of the fixed end of the lifting oil cylinder.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses the system has avoided the too big and wearing and tearing of chain link of stress that the anchor winch capstan winch caused, through centre gripping unit and spacing unit cooperation action, prolongs the life of anchor chain.
2. The utility model discloses device compact structure light in weight, device area is little, and the simple function is reliable, and installation and maintenance cost are low.
3. The utility model discloses device degree of automation is higher, is convenient for realize the automatic control of device.
Based on the reason, the utility model discloses can extensively promote in fields such as mooring.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses anchor chain lifting mechanism hydraulic system principle sketch map.
Fig. 2 is a schematic view of the anchor chain hoist apparatus of the present invention.
In the figure: 1. the hydraulic oil pump comprises a one-way quantitative hydraulic oil pump body, a main oil circuit safety protection device, a pressure sensor, a lifting reversing valve, a lifting loop safety protection device, a lifting oil cylinder, a limiting reversing valve, a clamping reversing valve, a check valve, a throttle valve, a clamping oil cylinder, a limiting oil cylinder, a cooling device, a filtering device, a hydraulic oil tank, an oil temperature and oil level monitoring device, a cooling device, a filtering device, a cooling device, an oil temperature and oil level monitoring device, a cooling device, a gas discharging device, a heating device, a switch, a hydraulic oil tank, a power and control unit, a base, a movable cross beam, a heating device, a switch, a hydraulic oil tank, a power and control unit, a base, a movable cross beam, a chain guide device and an anchor chain.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1, the utility model provides an anchor chain lifting device hydraulic system, including the lifting unit who is used for going up and down the anchor chain, be used for locking spacing unit and the clamping unit of anchor chain, and to lifting unit, spacing unit and clamping unit provide the fluid feed unit of transmission medium.
Specifically, the lifting unit is used for lifting the anchor chain 24 and comprises two lifting oil cylinders 6 and a lifting reversing valve 4 which are arranged in parallel, wherein the lifting reversing valve 4 is an electric proportional three-position four-way reversing valve. The lifting reversing valve 4 is connected with a rodless cavity of the lifting oil cylinder 6 in the middle position and is connected with a hydraulic oil tank 19 through a one-way valve, the oil tank 19 can receive oil returned by the action oil cylinder, and when the lifting reversing valve 4 works, the lifting reversing valve 4 receives a control signal to change the through-flow direction of oil in the valve so as to control the corresponding lifting oil cylinder 6 to perform functions. Furthermore, a lifting safety protection device 5 is arranged between the lifting oil cylinder 6 and the lifting reversing valve 4, and the lifting loop safety device 5 can control the pressure in the hydraulic oil cylinder cavity to prevent the equipment from being damaged due to overlarge pressure. Preferably, the lifting safety protection device 5 consists of a first overflow valve, a second overflow valve and a one-way valve. After the first overflow valve is connected with the one-way valve in parallel, one end of the first overflow valve is connected with the lifting reversing valve, and the other end of the first overflow valve is connected with a hydraulic pipeline leading to a rodless cavity of the lifting hydraulic cylinder. The first overflow valve is simultaneously regulated and controlled by the pressure in two directions from a hydraulic pipeline leading to a rodless cavity of the lifting hydraulic cylinder and a hydraulic pipeline leading to a rod cavity of the lifting hydraulic cylinder. One end of the second overflow valve is connected with a hydraulic pipeline leading to a rodless cavity of the lifting hydraulic cylinder, and the other end of the second overflow valve is connected with a hydraulic pipeline leading to a rod cavity of the lifting hydraulic cylinder. The second overflow valve is regulated by the pressure on a hydraulic pipeline leading to a rodless cavity of the lifting hydraulic cylinder.
The limiting unit comprises two limiting oil cylinders 12 and a limiting reversing valve 7 which are oppositely arranged, wherein the limiting reversing valve 7 is an electric proportional three-position four-way reversing valve. The limiting reversing valve 7 is connected with a rodless cavity of the limiting oil cylinder 12 in the middle position and is connected with a hydraulic oil tank 19 through a one-way valve, the oil tank 19 can receive return oil of the limiting oil cylinder 12, and when the limiting reversing valve 7 works, the limiting reversing valve 7 receives a control signal to change the through-flow direction of oil in the valve so as to control the corresponding limiting oil cylinder 12 to perform functions. An oil opening of the limiting reversing valve 7 is provided with a check valve 9 and a throttle valve 10, the check valve 9 and the throttle valve 10 are connected in parallel, one end of the check valve 9 and one end of the throttle valve 10 are connected with the limiting reversing valve 7, and the other end of the check valve 9 is connected with a hydraulic pipeline.
The clamping unit comprises two clamping oil cylinders 11 and a clamping reversing valve 8 which are oppositely arranged, wherein the clamping reversing valve 8 is an electric proportion three-position four-way reversing valve. The clamping reversing valve 8 is connected with a rodless cavity of the clamping oil cylinder 11 in the middle position and is connected with a hydraulic oil tank 19 through a one-way valve, the oil tank 19 can receive return oil of the clamping oil cylinder 11, and when the clamping reversing valve 8 works, the clamping reversing valve 8 receives a control signal to change the through-flow direction of oil in the valve so as to control the corresponding clamping oil cylinder 11 to perform functions. The oil port on the clamping reversing valve 8 is provided with a check valve 9 and a throttle valve 10, the check valve 9 and the throttle valve 10 are in parallel connection, one end of the check valve 9 and one end of the throttle valve 10 are connected with the clamping reversing valve 8, and the other end of the check valve is connected with a hydraulic pipeline.
The oil liquid supply unit comprises a hydraulic oil tank 19, a unidirectional quantitative hydraulic oil pump 1 is arranged on an oil outlet pipeline of the hydraulic oil tank 19, and the unidirectional quantitative hydraulic oil pump 1 is provided with a main oil pipeline safety protection device 2 and a pressure sensor 3. The main oil path safety protection device 2 preferably adopts a pilot overflow valve. A cooling device 13 and a filtering device 14 are sequentially arranged on an oil return pipeline of the hydraulic oil tank 19 along the backflow direction, and are used for cooling and filtering return oil respectively so as to ensure that hydraulic oil maintains a normal working state. A switch 18 is also arranged between the unidirectional quantitative hydraulic oil pump 1 and the hydraulic oil tank 19, the upper part of the switch 18 is connected with the unidirectional quantitative hydraulic oil pump 1, and the lower part is connected with the hydraulic oil tank 19. The switch 18 is used for controlling whether the oil tank 19 can supply oil to the unidirectional quantitative hydraulic oil pump 1
Further, an oil temperature and level monitoring device 15 is arranged above the hydraulic oil tank 19, so that the temperature and the storage amount of oil in the oil tank can be conveniently monitored by workers.
Further, an air bleeding device 16 is arranged above the hydraulic oil tank 19, and cleaning air is periodically opened to avoid occupying the space in the oil tank 19.
Further, a heating device 17 is arranged inside the hydraulic oil tank 19, and the system is turned on before working to preheat hydraulic oil so that the system can work normally.
On the other hand, the embodiment of the utility model provides an anchor chain lifting mechanism device, based on the system realization of any one of above-mentioned, as shown in fig. 2, including base 21, be provided with lifting cylinder 6 in the vertical direction above base 21, lifting cylinder's 6 piston rod fixed connection movable cross beam 22, movable cross beam 22 is last to be fixed with centre gripping hydro-cylinder 11, the piston rod end of centre gripping hydro-cylinder 11 is provided with the anchor chain clamping part; the bottom of the fixed end of the lifting oil cylinder 6 is provided with a limiting oil cylinder 12, and the tail end of a piston rod of the limiting oil cylinder 12 is provided with an anchor chain clamping part. Further, a chain guide 23 is arranged in the middle of the fixed end of the lifting oil cylinder.
The process of realizing anchor chain lifting based on the anchor chain lifter device comprises the following steps:
the rodless cavity of the clamping oil cylinder 6 is filled with oil, the piston rod extends outwards, and the anchor chain is in a clamped state; the limit oil cylinder 12 has oil inlet in a rod cavity, the piston rod is retracted inwards, and the anchor chain 24 is in a movable state; the rodless cavity of the lifting oil cylinder 11 is filled with oil, and a piston rod extends outwards to drive the clamping oil cylinder 11 positioned on the movable cross beam 22 to move upwards and drive the clamped anchor chain 24 to lift upwards;
after the piston rod of the lifting oil cylinder 6 moves to the stroke limit, the rodless cavity of the limiting oil cylinder 12 is filled with oil, the piston rod extends outwards, and the anchor chain 24 is in a limiting state and cannot move; oil is fed into a rod cavity of the clamping oil cylinder 11, and a piston rod is retracted inwards and is separated from the anchor chain 24; the lifting oil cylinder 6 has a rod cavity for feeding oil, a piston rod is retracted inwards to drive the clamping oil cylinder 11 positioned on the movable cross beam 22 to move downwards and return to an initial working position;
the above-described lifting step is repeatedly performed, and the lifting of the anchor chain 24 can be completed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A hydraulic system of an anchor chain lifter is characterized by comprising a lifting unit for lifting an anchor chain, a limiting unit and a clamping unit for locking the anchor chain, and an oil liquid supply unit for supplying transmission media to the lifting unit, the limiting unit and the clamping unit;
the lifting unit comprises two lifting oil cylinders (6) which are arranged in parallel, and any lifting oil cylinder (6) is connected with the oil liquid supply unit through a lifting reversing valve (4) so as to form an oil liquid loop of the lifting unit;
the limiting unit comprises two limiting oil cylinders (12) which are oppositely arranged, and any limiting oil cylinder (12) is connected with the oil liquid supply unit through a limiting reversing valve (7) so as to form an oil liquid loop of the limiting unit;
the clamping unit comprises two clamping oil cylinders (11) which are oppositely arranged, and any clamping oil cylinder (11) is connected with the oil liquid supply unit through a clamping reversing valve (8) so as to form an oil liquid loop of the clamping unit;
the oil supply unit comprises a hydraulic oil tank (19), a one-way quantitative hydraulic oil pump (1) is arranged on an oil outlet pipeline of the hydraulic oil tank (19), and a cooling device (13) and a filtering device (14) are sequentially arranged on an oil return pipeline of the hydraulic oil tank (19) along the backflow direction.
2. Anchor chain hoist hydraulic system according to claim 1, characterized in that a lifting safety protection device (5) is arranged between the lifting cylinder (6) and the lifting reversing valve (4).
3. A chain hoist hydraulic system as claimed in claim 1, characterized in that a main line safety protection device (2) and a pressure sensor (3) are also provided on the outlet line of the hydraulic tank (19).
4. A chain hoist hydraulic system as claimed in claim 1, characterized in that an oil temperature and level monitoring device (15) is provided above the hydraulic oil tank (19).
5. A chain hoist hydraulic system as claimed in claim 1, characterized in that a blow-off device (16) is provided above the hydraulic oil tank (19).
6. A chain hoist hydraulic system as claimed in claim 1, characterized in that the hydraulic oil tank (19) is internally provided with a heating device (17).
7. The hydraulic system of the anchor chain lifter according to claim 1, wherein an oil feeding pipeline of the limiting oil cylinder (12) is provided with a check valve (9) and a throttle valve (10), and after the check valve (9) and the throttle valve (10) are connected in parallel, one end of the check valve is connected with the limiting oil cylinder (12), and the other end of the check valve is connected with the hydraulic pipeline;
the oil applying pipeline of the clamping oil cylinder is provided with a check valve (9) and a throttle valve (10), after the check valve (9) and the throttle valve (10) are connected in parallel, one end of the oil applying pipeline is connected with the clamping oil cylinder (11), and the other end of the oil applying pipeline is connected with a hydraulic pipeline.
8. An anchor chain lifter device is realized on the basis of the system of any one of claims 1 to 7, and is characterized by comprising a base (21), wherein a lifting oil cylinder (6) is arranged above the base (21) in the vertical direction, a piston rod of the lifting oil cylinder (6) is fixedly connected with a movable cross beam (22), a clamping oil cylinder (11) is fixedly arranged on the movable cross beam (22), and an anchor chain clamping part is arranged at the tail end of the piston rod of the clamping oil cylinder (11); a limiting oil cylinder (12) is arranged at the bottom of the fixed end of the lifting oil cylinder (6), and an anchor chain clamping portion is arranged at the tail end of a piston rod of the limiting oil cylinder (12).
9. An anchor chain hoist arrangement as claimed in claim 8, characterized in that the chain guide (23) is arranged in the middle of the fixed end of the lifting cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120633774.3U CN214661258U (en) | 2021-03-29 | 2021-03-29 | Hydraulic system and device of anchor chain lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120633774.3U CN214661258U (en) | 2021-03-29 | 2021-03-29 | Hydraulic system and device of anchor chain lifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214661258U true CN214661258U (en) | 2021-11-09 |
Family
ID=78457042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120633774.3U Active CN214661258U (en) | 2021-03-29 | 2021-03-29 | Hydraulic system and device of anchor chain lifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214661258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007182A (en) * | 2021-03-29 | 2021-06-22 | 大连海事大学 | Hydraulic system and device of anchor chain lifter and application method of device |
-
2021
- 2021-03-29 CN CN202120633774.3U patent/CN214661258U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007182A (en) * | 2021-03-29 | 2021-06-22 | 大连海事大学 | Hydraulic system and device of anchor chain lifter and application method of device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107697242B (en) | Automatic buoy recycling and laying device | |
| US4446807A (en) | Mooring apparatus for floating vessels | |
| NL192689C (en) | Hoist equipped with a heave compensator. | |
| KR102050614B1 (en) | Traction system for operating lines of a vessel | |
| CN103359645A (en) | System and method for automatically regulating tension of guide ropes of flexible cable suspension platform | |
| CN214661258U (en) | Hydraulic system and device of anchor chain lifter | |
| US9227701B2 (en) | Vessel comprising a mooring connector with a heave compensator | |
| CN107473118A (en) | A kind of hydraulic cylinder type half active compensation device of crane | |
| KR100189788B1 (en) | Method and system for the casting of anchors and mooring of platforms, and anchor casting unit for same | |
| NO147511B (en) | STABILIZATION SYSTEM FOR A HALF SUBMITTED CRANE VESSEL | |
| CN104608883B (en) | Ship floating maintenance platform | |
| CN103640987A (en) | Folding arm hydraulic crane | |
| CN206187287U (en) | A anchor chain detent for mooring system | |
| CN102807165B (en) | Fixed multifunctional manipulator | |
| CN111332407B (en) | Anchor chain lifter and using method thereof | |
| CN216269827U (en) | Offshore single point mooring replacement maintenance equipment | |
| EP1795491A1 (en) | Method for transferring the load between objects subjected to swell, and heave compensator | |
| CN108584739B (en) | Emergency overload protection system and working method thereof | |
| CN113007182A (en) | Hydraulic system and device of anchor chain lifter and application method of device | |
| CN105819319B (en) | The main hoisting rope adjusting apparatus and its adjusting method of a kind of mine shaft hoist system | |
| CN111332409A (en) | Chain stopper and using method thereof | |
| CN211996054U (en) | Anchor chain lifter | |
| US9174705B2 (en) | Compensated lashing of tender assist drilling unit to a floating production facility | |
| CN209872190U (en) | Heave compensation piston tensioner | |
| CN205662215U (en) | Main hoisting rope adjusting device of vertical shaft hoisting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |