CN117284416A - A manually operated quick release mooring device - Google Patents
A manually operated quick release mooring device Download PDFInfo
- Publication number
- CN117284416A CN117284416A CN202311050492.0A CN202311050492A CN117284416A CN 117284416 A CN117284416 A CN 117284416A CN 202311050492 A CN202311050492 A CN 202311050492A CN 117284416 A CN117284416 A CN 117284416A
- Authority
- CN
- China
- Prior art keywords
- stud
- baffle
- quick release
- manually operated
- bracket
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B2021/003—Mooring or anchoring equipment, not otherwise provided for
- B63B2021/004—Quick release elements in mooring connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
一种人工操作的快速解脱系泊装置，有固定在地面的底座，底座上固定有斜角式挡板和框架式支架，斜角式挡板位于支架中心，支架支撑有螺栓止动器，螺栓止动器位于斜角式挡板上方。螺栓止动器包括有螺柱和螺母，螺母套在螺柱上，螺柱顶部插入焊接有锤击杆，卸扣的扣顶栓有链环，链环套在第一挡板上，螺柱底部抵住链环，卸扣另一端连接与系泊缆连接。本发明为人工操作，不依赖任何控制设备，不受高温环境影响，在火灾发生时，具有足够的稳定性，能够确保一次性释放缆绳成功。通过斜角式挡板、螺柱制动器和锤击杆三处省力结构形式，将系泊缆绳快速解脱的力逐步缩小至人工可以达到的水平。
A manually operated quick-release mooring device, which has a base fixed on the ground. An angled baffle and a frame bracket are fixed on the base. The angled baffle is located in the center of the bracket. The bracket is supported by a bolt stopper. The bolt The stop is located above the angled bezel. The bolt stopper includes a stud and a nut. The nut is put on the stud. A hammer rod is inserted and welded into the top of the stud. The top bolt of the shackle has a chain ring. The chain ring is put on the first baffle. The stud The bottom is against the chain link, and the other end of the shackle is connected to the mooring line. The invention is manually operated, does not rely on any control equipment, and is not affected by high temperature environments. When a fire occurs, it has sufficient stability and can ensure the success of one-time release of the cable. Through the three labor-saving structural forms of the angled baffle, stud brake and hammer rod, the force required to quickly release the mooring rope is gradually reduced to a level that can be achieved manually.
Description
Technical Field
The invention belongs to the field of ship construction and design, and particularly relates to a manually operated quick release mooring device.
Background
Along with the development of economy and the improvement of environmental protection consciousness of people, clean energy is more and more favored by people in various countries. Natural gas as a hydrocarbon has the advantages of high combustion heat value, cleanness, no pollution, wide application and the like, and has extremely rapid development in recent years.
Offshore LNG is developed primarily in FLNG mode, i.e., floating equipment that integrates offshore natural gas production, liquefaction, storage, and export. In the technical circuit diagram of the ten important fields issued by the industrial and informatization departments in China, novel ocean oil and gas resource development equipment such as FLNG and the like are also explicitly proposed as important products.
The LNG is delivered to the LNG carrier by the FLNG, which is being produced and is being manufactured, in a side-by-side delivery mode, that is, the LNG carrier is moored to one side of the FLNG, and the distance between the two is very short.
Because LNG is inflammable and explosive liquid, the evaporated gas is natural gas, and the LNG carrier and the FLNG carrier are both in fire and explosion risks. In case of fire on one of the FLNG and the LNG carrier, it is necessary to quickly pull the LNG carrier off the FLNG in order to secure the safety of the other ship. However, the LNG carrier is firmly moored to the FLNG side by the mooring lines, and in order to achieve rapid towing-off of the LNG carrier, a device capable of rapidly releasing the mooring lines is required.
At present, a hydraulic-driven mooring rope quick release device is commonly used, and the device is convenient to operate and can realize one-key release of the mooring rope. But the disadvantage of this device is also very obvious simultaneously, because this device operation relies on hydraulic power device, and hydraulic oil is comparatively sensitive to temperature, and hydraulic line, hydraulic pump station and relevant control cable etc. all can appear the damage of different degrees under flame, high temperature and explosion simultaneously. The natural gas has extremely high propagation speed on fire, and once the device fails and basically has no maintenance time, the FLNG and LNG transport ship can not be quickly released, so that fire is spread among ships, and more serious economic loss and casualties are caused. Even if the hydraulic drive is changed into the electric drive, the requirements of safe use under the conditions of emergency fire, high temperature and explosion still cannot be met.
Disclosure of Invention
In order to solve the above problems, the present invention provides a manually operated quick release mooring device, which aims to achieve the purpose that the manually operated device does not affect the stability of equipment due to fire, high temperature or explosion in emergency, and adopts the following technical scheme:
the utility model provides a quick release mooring device of manual operation, has the base of fixing on ground, be fixed with bevel baffle and frame-type support on the base, bevel baffle is located the support center, the support supports has the bolt stopper, the bolt stopper is located bevel baffle top.
The oblique angle type baffle top has the recess, the recess is formed by two baffles, two the baffle is first baffle and second baffle respectively, first baffle is close to the sea setting, the second baffle is kept away from the sea setting, first baffle height is higher than the second baffle height, first baffle top is the arc.
The bolt stopper comprises a stud and a nut, wherein the nut is sleeved on the stud, toggle plates are symmetrically fixed on two sides of the nut, the toggle plates are welded with the top of the bracket, a hammering rod is inserted into the top of the stud, and the hammering rod is welded and fixed with the stud.
The shackle is characterized in that a shackle top bolt is provided with a chain ring, the chain ring is sleeved on the first baffle, the bottom of the stud abuts against the chain ring, and the other end of the shackle is connected with a mooring rope.
According to the manual quick release mooring device, the groove is in a V shape, the inclined plane of the first baffle plate and the horizontal plane form an inclined angle of 60 degrees, and the height H of the first baffle plate is not more than S and not less than 2R.
Wherein S is the stroke of the stud in the nut.
R is the radius of the groove.
In the above-mentioned manually operated quick release mooring device, further, the length of the stud satisfies the minimum stroke of the stud: s is equal to or greater than 2r×tan60 ° -r=2.464R.
Wherein S is the stroke of the stud in the nut.
R is the radius of the groove.
According to the manual quick release mooring device, the hammering rod is a steel rod piece, high-strength steel with the yield strength of 690MPa is adopted, the diameter of the hammering rod is 50mm, and the length of the hammering rod is 1000mm.
In the above-mentioned manually operated quick release mooring device, further, the bottom of the bevel baffle penetrates through the bracket and is embedded in the base.
In the above-mentioned manually operated quick release mooring device, further, the internal clear width of the bracket is not less than 400mm, and the internal clear height is not less than 400mm.
A manually operated quick release mooring as described above, further the foundation is secured to the quay or vessel deck.
In a manually operated quick release mooring as described above, the hammering rod is placed horizontally further.
The invention relates to a manually operated quick release mooring device, which has the advantages that:
1. the invention is operated manually, does not depend on any control equipment, is not influenced by high-temperature environment, has enough stability when fire disaster occurs, and can ensure that the cable is released successfully once.
2. According to the invention, through three labor-saving structural forms of the bevel baffle, the stud brake and the hammering rod, the quick release force of the mooring rope is gradually reduced to a level which can be achieved manually, and the mooring rope is reasonable, compact and ingenious in design.
3. The invention is far lower than the hydraulic or electric mooring rope quick release device commonly applied at present, and has good economical efficiency.
Drawings
FIG. 1 is a schematic view (in section) of a mooring according to the invention;
FIG. 2 is a schematic view (middle cross section) of a mooring according to the invention;
FIG. 3 is a schematic view (side and front view) of an angled baffle;
FIG. 4 is a schematic view (side view and front view) of a stud brake;
fig. 5 is a schematic view (side view) of a quick release process of the mooring device of the invention;
FIG. 6 is a force analysis graph (side view) of a link as a subject;
FIG. 7 is a force analysis chart (partially developed) of a stud and nut thread as a subject of investigation;
wherein: 1-base, 2-bracket, 3-bevel baffle, 4-stud brake, 4-1-stud, 4-2-nut, 4-3-toggle, 5-hammer, 6-link, 7-shackle, a-mooring line, B-dock or deck, L1-bracket internal clearance, L2-bracket internal clearance, H-ramp top to bottom distance, R-bevel baffle groove radius = link cross-section radius, S-stud brake stud travel, fl-mooring line pull, fz-stud brake stud axial force, fc-bevel baffle support force, fu-friction force, fq-driving force, fc 1-nut thread support force, fr-manual hammer force, α is tooth half angle.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A manual quick release mooring device firstly converts the locking force of a mooring rope into the axial force of a stud brake by a special structure form of a bevel baffle and stud brake combination, and the axial force of the stud brake is a component force of the pulling force of the mooring rope in the stud direction. The axial force of the stud brake is reduced to radial force through the threaded structure, and the radial force is further reduced through the lever principle at the handle, so that the manual operation degree is achieved, and the device is safer and more reliable.
As shown in fig. 1 and 2, a base fixed on the deck is provided, an oblique baffle and a frame type bracket are fixed on the base, the oblique baffle is positioned at the center of the bracket, the bracket supports a bolt stopper, and the bolt stopper is positioned above the oblique baffle.
The oblique angle type baffle top has the recess, and the recess is formed by two baffles, and two baffles are first baffle and second baffle respectively, and first baffle is close to the sea setting, and the sea setting is kept away from to the second baffle, and first baffle height is higher than the second baffle height, and first baffle top is the arc.
The bolt stopper comprises a stud and a nut, wherein the nut is sleeved on the stud, toggle plates are symmetrically fixed on two sides of the nut, the toggle plates are welded with the top of the bracket, a hammering rod is inserted into the top of the stud, and the hammering rod is welded and fixed with the stud.
The shackle top bolt is provided with a chain ring, the chain ring is sleeved on the first baffle, the bottom of the stud is propped against the chain ring, and the other end of the shackle is connected with the mooring rope.
The base has enough intensity to support the whole mooring device, the lower end is arranged on a wharf or a ship deck, and the upper end is welded with the bracket and the bevel baffle.
The bracket is of a box-shaped frame structure, the lower end of the bracket is welded with the base, an oblique angle baffle is arranged in the bracket, and a stud brake is arranged on the upper part of the bracket. The internal clear width of the box structure is not smaller than 400mm, and the internal clear height is not smaller than 400mm, namely L1 is larger than or equal to 400mm and L2 is larger than or equal to 400mm in the figure 2, as shown in the figure 2. So as to meet the space requirements of maintenance and overhaul and simultaneously ensure that the chain ring is not blocked. The exterior of the box structure should be sufficiently strong to provide sufficient strength to the box structure.
The lower end of the bevel baffle is embedded into the bottom of the bracket and is welded with the bottom of the bracket and the base respectively, so that the welding area is increased and the strength is improved. The top of the bevel baffle is provided with a groove, and the groove is used for placing the chain ring, and the concave radius R of the groove is the same as the radius R of the cross section of the chain ring. The front end of the groove is an inclined plane, the inclined plane inclination angle is 60 degrees, and the distance H from the top end to the bottom end of the inclined plane is not more than S and not less than 2R. The end part of the inclined plane is arc, so that the chain ring can be conveniently released. The bevel baffle is shown in fig. 3.
The stud-brake includes three parts, a stud, a nut and a toggle plate, as shown in fig. 4. The bottom of the stud brake props against the chain ring to play a role in braking the chain ring; the nut is embedded into the top end of the bracket; the toggle plate is welded to the top of the bracket to secure the stud-brake to the bracket as shown in fig. 1 and 2. The stud is 8.8 grade, M100, bearing axial force is not less than 260t, and the requirement of mooring force of most mooring ropes is met. Four toggle plates are welded on the outer side of the nut, and then the toggle plates are welded with the bracket. The nut is matched with the stud, the same level is 8.8, and the thread length meets the stroke requirement of the stud. The travel of the stud should be no less than the result of the following calculation:
stud travel S is greater than or equal to 2r×tan60 ° -r=2.464R.
The hammering rod is a steel rod piece, adopts high-strength steel with the yield strength of 690MPa, penetrates through the top end of the stud brake, and is welded and fixed. The hammering rod section is the circle of diameter 50mm, length 1000mm, and the tip can bear 1 ton power's the beating, far exceeds the category of manpower holding hammer beating power, therefore the manpower holds the hammering and beats the tip of hammering rod, can not cause the damage of hammering rod.
The safe operating load of the chain ring is matched with the stud brake and is not less than 260t. One end of the chain ring is clamped by the bevel baffle and the stud brake, and the other end is connected with the shackle.
The safety operation load of the shackle is matched with the stud brake and is not less than 260t. One end of the shackle is connected with the chain ring, and the other end is connected with the mooring rope.
When the mooring device of the invention normally moors, the shackle is opened, a mooring rope is put into the shackle, and then the shackle is closed, so that the mooring rope operation is realized.
When the mooring device is required to be quickly released, a person uses a hammer to strike the end part of the hammering rod, so that the stud of the stud brake moves upwards, the mooring rope pulls the shackle, and then the chain ring is pulled, and the chain ring slides out of the mooring device along the slope of the bevel baffle, thereby realizing the quick release of the mooring rope. The quick release condition, shackle and link are released along with the mooring line. The quick release process is shown in fig. 5.
In order to enable a person to open the stud brake by knocking the hammering rod through a hammer, the three-stage mooring force reduction structure is provided with the bevel baffle, the stud brake and the hammering rod. The calculation check is as follows: (mooring force is based on the minimum breaking force of 130 tons of mooring ropes of the current international mainstream 17-thousand cubic meters LNG ship, namely mooring rope tension force Fl=130t.)
The angled baffles break the mooring force into the axial force of the stud-stopper as shown in fig. 6. Because the bevel baffle bevel angle is 60 °, fz=fl×tan30 ° =130×0.58=75.4 t.
From the above, the axial force Fz of the stud in the stud-brake is 75.4t. The screw was locally straightened with the stud as the subject, as shown in fig. 7. As can be seen from the figure, fq+fz×sinα=fu, the friction coefficient of the high-strength steel is 0.142, α=8°, fu=0.15 fz×cos α, and fq=0.1 t is obtained.
The force applied to the hammering rod is a lever, the axis of the stud is a fulcrum, the end of the hammering rod is 500mm away from the fulcrum, the distance between the force applied to the stud and the fulcrum is 50mm, and the manual hammering force is about fr=0.1fq=10 kg, so that the stud can move upwards. The manual hammering is easy to reach 10kg, so the mooring device of the invention can be operated manually to quickly release the mooring lines.
Claims (8)
1. The quick release mooring device is characterized by comprising a base fixed on the ground, wherein an oblique angle type baffle and a frame type bracket are fixed on the base, the oblique angle type baffle is positioned at the center of the bracket, the bracket supports a bolt stopper, and the bolt stopper is positioned above the oblique angle type baffle;
the top of the bevel baffle is provided with a groove, the groove is formed by two baffles, the two baffles are a first baffle and a second baffle, the first baffle is arranged close to the sea surface, the second baffle is arranged far away from the sea surface, the height of the first baffle is higher than that of the second baffle, and the top of the first baffle is arc-shaped;
the bolt stopper comprises a stud and a nut, wherein the nut is sleeved on the stud, toggle plates are symmetrically fixed on two sides of the nut, the toggle plates are welded with the top of the bracket, a hammering rod is inserted into the top of the stud, and the hammering rod is welded and fixed with the stud;
the shackle is characterized in that a shackle top bolt is provided with a chain ring, the chain ring is sleeved on the first baffle, the bottom of the stud abuts against the chain ring, and the other end of the shackle is connected with a mooring rope.
2. A manually operated quick release mooring according to claim 1 wherein the recess is V-shaped, the inclined surface of the first panel forms an inclination angle of 60 ° with the horizontal, the height H of the first panel being no greater than S and no less than 2R;
s is the stroke of the stud in the nut;
r is the radius of the groove.
3. A manually operated quick release mooring according to claim 1 or 2, wherein the stud length satisfies a minimum stud travel: s is equal to or greater than 2r×tan60 ° -r=2.464R;
wherein S is the stroke of the stud in the nut;
r is the radius of the groove.
4. A manually operated quick release mooring according to claim 1, wherein the hammering rod is a steel rod made of high strength steel with a yield strength of 690MPa, and the hammering rod has a diameter of 50mm and a length of 1000mm.
5. A manually operated quick release mooring according to claim 1 wherein said bevel baffle bottom extends through said cradle and is embedded in said foundation.
6. A manually operated quick release mooring according to claim 1, wherein the cradle has an internal clear width of not less than 400mm and an internal clear height of not less than 400mm.
7. A manually operated quick release mooring according to claim 1, wherein the foundation is fixed to the deck of a dock or vessel.
8. A manually operated quick release mooring according to claim 1 wherein the hammer stem is horizontally disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311050492.0A CN117284416A (en) | 2023-08-21 | 2023-08-21 | A manually operated quick release mooring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311050492.0A CN117284416A (en) | 2023-08-21 | 2023-08-21 | A manually operated quick release mooring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117284416A true CN117284416A (en) | 2023-12-26 |
Family
ID=89250755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311050492.0A Pending CN117284416A (en) | 2023-08-21 | 2023-08-21 | A manually operated quick release mooring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117284416A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2847558B1 (en) * | 1978-11-02 | 1979-11-08 | Johann Knief | Towing gear with release device for tugboats |
| CN101163622A (en) * | 2005-03-22 | 2008-04-16 | 瑞士单浮筒系泊公司 | Reinforced side-by-side mooring structure |
| KR20140048621A (en) * | 2012-10-16 | 2014-04-24 | 대우조선해양 주식회사 | Chain compressor for vessels |
| CN106240744A (en) * | 2016-07-29 | 2016-12-21 | 中国船舶重工集团公司第七〇九研究所 | Soft firm arm and the quick-release device of mooring leg in a kind of single point mooring system |
| CN109572934A (en) * | 2019-01-04 | 2019-04-05 | 江苏扬帆船舶设备有限公司 | A kind of anchor chain locking device |
| CN217100372U (en) * | 2022-04-28 | 2022-08-02 | 研海能源科技(上海)有限公司 | Disconnectable ocean monitoring floating platform mooring system |
| CN220809718U (en) * | 2023-08-21 | 2024-04-19 | 大连船舶重工集团有限公司 | Manual operation's quick tripping mooring device |
-
2023
- 2023-08-21 CN CN202311050492.0A patent/CN117284416A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2847558B1 (en) * | 1978-11-02 | 1979-11-08 | Johann Knief | Towing gear with release device for tugboats |
| CN101163622A (en) * | 2005-03-22 | 2008-04-16 | 瑞士单浮筒系泊公司 | Reinforced side-by-side mooring structure |
| KR20140048621A (en) * | 2012-10-16 | 2014-04-24 | 대우조선해양 주식회사 | Chain compressor for vessels |
| CN106240744A (en) * | 2016-07-29 | 2016-12-21 | 中国船舶重工集团公司第七〇九研究所 | Soft firm arm and the quick-release device of mooring leg in a kind of single point mooring system |
| CN109572934A (en) * | 2019-01-04 | 2019-04-05 | 江苏扬帆船舶设备有限公司 | A kind of anchor chain locking device |
| CN217100372U (en) * | 2022-04-28 | 2022-08-02 | 研海能源科技(上海)有限公司 | Disconnectable ocean monitoring floating platform mooring system |
| CN220809718U (en) * | 2023-08-21 | 2024-04-19 | 大连船舶重工集团有限公司 | Manual operation's quick tripping mooring device |
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