CN112193371A - Three-degree-of-freedom displacement platform for ship - Google Patents
Three-degree-of-freedom displacement platform for ship Download PDFInfo
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- CN112193371A CN112193371A CN202011070372.3A CN202011070372A CN112193371A CN 112193371 A CN112193371 A CN 112193371A CN 202011070372 A CN202011070372 A CN 202011070372A CN 112193371 A CN112193371 A CN 112193371A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 24
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 description 17
- 238000012423 maintenance Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
- B63B27/143—Ramps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a three-degree-of-freedom displacement platform for a ship, which comprises a platform surface which is always kept in a parallel state with a base, wherein the platform surface is connected with 3 movable seats through a connecting rod assembly, the 3 movable seats are respectively installed on 3 lead screws in a matched mode through thread pairs, guide sleeves are arranged on the 3 movable seats and are sleeved on guide pillars, the connecting rod assembly comprises a connecting rod and a Steve hinged seat, one end of the connecting rod is connected with the platform surface, the other end of the connecting rod is connected with the movable seats through the Steve hinged seat, the upper end of each guide pillar is fixed on an upper end plate, the upper end of each upper end plate is fixed with a motor, the output end of each motor is connected with the corresponding lead screw, the lower end of each guide pillar is fixed on a lower. The three-degree-of-freedom displacement platform for the ship can be miniaturized, three-degree-of-freedom displacement generated by the ship under the sea condition, particularly large-lift displacement generated by the ship under the sea condition, is compensated, and the safety of the operation of the platform on the ship is improved.
Description
Technical Field
The invention relates to a three-degree-of-freedom displacement platform for a ship.
Background
The three-degree-of-freedom displacement platform for the ship is mainly used for operating platforms between the ship and a wharf, between the ship and between the ship and a fixed object, the operating platforms are influenced by sea conditions, and connecting objects (such as a springboard, a trestle and the like) frequently move or even fall off, so that the safety of operating personnel and goods is seriously damaged.
The three-degree-of-freedom displacement platform for the ship is more and more widely used, is mainly used for operation platforms between ships and docks, between ships and ships, between ships and fixed objects, and particularly for ships with smaller tonnage, such as a sea police ship, a law enforcement ship, a wind power maintenance ship and the like.
At present, the operation platform for ships and docks, ships and ships, ships and fixed objects is mainly composed of a springboard and a six-degree-of-freedom landing trestle; the springboard is the simplest and the safest; the landing and leaning trestle with six degrees of freedom has a serious defect that the stroke of up-and-down motion is limited, and the up-and-down motion of the ship is very large in the sea due to the influence of various factors such as tides, sea waves, water currents and the like, for example, the influence of east sea tides is more than 2 meters, and the influence of third-level sea conditions is more than 2 meters.
Disclosure of Invention
The invention aims to provide a three-degree-of-freedom displacement platform for a ship, which solves the safety problem of operation platforms of ships and docks, ships and ships, and ships and fixed objects, and has the characteristics of simple structure, convenience in operation, small size, light weight, large vertical movement range and low manufacturing cost.
The technical scheme adopted for achieving the purpose is that the three-degree-of-freedom displacement platform for the ship comprises a platform surface which is always kept in a parallel state with a base, the platform surface is connected with 3 movable seats through a connecting rod assembly, the 3 movable seats are respectively installed on 3 lead screws in a matched mode through thread pairs, guide sleeves are arranged on the 3 movable seats and sleeved on guide pillars, the connecting rod assembly comprises a connecting rod and a Steve hinged seat, one end of the connecting rod is connected with the platform surface, the other end of the connecting rod is connected with the movable seats through the Steve hinged seat, the upper end of each guide pillar is fixed on an upper end plate, a motor is fixed at the upper end of each upper end plate, the output end of the motor is connected with the lead screws, the lower end of each guide pillar is fixed on a lower end plate, and the.
The connecting rod assembly has 6 groups, and each movable seat is connected with the table-board through 2 groups of connecting rod assemblies.
The number of the guide sleeves is 6, each movable seat is provided with 2 guide sleeves, the 2 guide sleeves are respectively sleeved on 2 guide pillars which are vertically fixed with the lower end plate, and the upper ends of the 2 guide pillars are vertically fixed on the upper end plate.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. In the invention, three independent motion mechanisms which can independently control the up and down motion are formed by the movable seat, the guide pillar, the screw rod, the Steve hinged support, the guide sleeve and the motor, the three independent motion mechanisms can independently control the motion and can also carry out combined motion, the three-degree-of-freedom linear displacement motion is realized, the up and down stroke can be adjusted according to the length of the screw rod, and the three-degree-of-freedom linear displacement motion has the characteristic of large up and down stroke; and no matter how the independent motion mechanism moves, the table top is always kept in a parallel state with the base;
2. under the same overall dimension and weight, the vertical movement range is larger, the influence of a large lift generated by the ship in sea waves on operation is avoided, and the safety of the operation platform is improved;
3. the invention has the characteristics of simple and compact structure, firmness and reliability, and is easier to manufacture, simpler to operate and lower in cost under the same requirement.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a general block diagram of the present invention;
fig. 2 is an assembly view of the present invention applied to an operation and maintenance ship of an offshore wind power tower.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings.
A three-degree-of-freedom displacement platform for a ship comprises a platform surface 2 which is always kept in a parallel state with a base 1, as shown in figure 1, the platform surface 2 is connected with 3 movable seats 4 through a connecting rod assembly 15, the 3 movable seats 4 are respectively installed on 3 lead screws 8 in a matched mode through thread pairs, guide sleeves 6 are arranged on the 3 movable seats 4, the guide sleeves 6 are sleeved on guide pillars 7, the connecting rod assembly 15 comprises connecting rods 3 and Steve hinged bases 5, one ends of the connecting rods 3 are connected with the platform surface 2, the other ends of the connecting rods 3 are connected with the movable seats 4 through Steve hinged bases 5, the upper ends of the guide pillars 7 are fixed on an upper end plate 10, motors 9 are fixed at the upper ends of the upper end plate 10, the output ends of the motors 9 are connected with the lead screws 8, the lower ends of the guide pillars 7 are fixed on a lower end plate 11, and the.
The connecting rod assemblies 15 are provided with 6 groups, and each movable seat 4 is connected with the table top 2 through 2 groups of connecting rod assemblies 15.
The number of the guide sleeves 6 is 6, 2 guide sleeves 6 are arranged on each movable seat 4, the 2 guide sleeves 6 are respectively sleeved on 2 guide pillars 7 which are vertically fixed with the lower end plate 11, and the upper ends of the 2 guide pillars 7 are vertically fixed on the upper end plate 10.
In the invention, 1 movable seat 4, 2 guide pillars 7, 1 screw rod 8, 2 guide sleeves 6, 1 motor 9, 1 upper end plate 10 and lower end plate 11 form an independent motion mechanism which can independently control and move up and down, the number of the independent motion mechanisms is 3, the 3 independent motion mechanisms are uniformly distributed and fixedly installed on the base 1, each independent motion mechanism is connected with the table top 3 through 2 connecting rods 2 and 2 Steve hinged seats 5 to form a three-degree-of-freedom displacement platform, the three-degree-of-freedom displacement platform has the advantages of small volume, light weight and large up-down stroke, and the table top 2 is always kept in a parallel state with the base 1 during movement.
When the invention is applied, as shown in fig. 2, the invention is applied to an offshore wind power operation and maintenance ship, mainly comprising an elevator bridge 12, a swing mechanism 13, a marine three-degree-of-freedom displacement platform, an offshore wind power operation and maintenance ship 14 and the like, when in actual use, the operation and maintenance ship leans against the upright post of a wind power tower, the marine three-degree-of-freedom displacement platform is installed on the front deck of the offshore wind power operation and maintenance ship 14, the swing mechanism 13 is installed on the table board 3 of the marine three-degree-of-freedom displacement platform, the elevator bridge 12 is installed on the moving table board of the swing mechanism 13, the front end of the elevator bridge 12 is carried on the ladder stand of the wind power tower, because the operation and maintenance ship leans against the upright post of the wind power tower, the operation and maintenance ship mainly generates linear displacement motion, particularly up and down motion, at the moment, the three-degree-of-freedom displacement, the personnel passage and the transportation of the goods are convenient.
The working principle of the invention is designed by utilizing the principle of a connecting rod motion mechanism, when three points independently or in combination move, the table top can only move up and down and do translational motion in any direction on the horizontal plane under the influence of the connecting rod, namely the table top 2 and the base 1 are always kept parallel; the three connecting rod motion mechanisms simultaneously ascend or descend, and the table top can ascend or descend; a connecting rod motion mechanism ascends, and the table top ascends and the connecting rod motion mechanism moves in the direction; the two connecting rod motion mechanisms rise simultaneously, and the table top rises and moves towards the middle direction of the two connecting rod motion mechanisms simultaneously; the three connecting rod motion mechanisms do different up-and-down combined motion, so that the table top can move up and down and move in any direction on the horizontal plane. The safety problem of the operation platform of ships and docks, ships and ships, ships and fixed objects is solved, and the safety device has the advantages of simple structure, convenience in operation, small size, light weight, large vertical movement range and low manufacturing cost; the method has wide functions in small-tonnage ships such as a sea police ship, a law enforcement ship, a wind power maintenance ship and the like, and is also suitable for various large ships.
Claims (3)
1. A three-degree-of-freedom displacement platform for a ship comprises a platform surface (2) which is always kept in a parallel state with a base (1), and is characterized in that the platform surface (2) is connected with 3 movable seats (4) through a connecting rod assembly (15), the 3 movable seats (4) are respectively installed on 3 lead screws (8) in a matched mode through thread pairs, guide sleeves (6) are arranged on the 3 movable seats (4), the guide sleeves (6) are sleeved on guide pillars (7), the connecting rod assembly (15) comprises connecting rods (3) and Steve hinged bases (5), one ends of the connecting rods (3) are connected with the platform surface (2), the other ends of the connecting rods (3) are connected with the movable seats (4) through the Steve hinged bases (5), the upper ends of the guide pillars (7) are fixed on upper end plates (10), motors (9) are fixed at the upper ends of the upper end plates (10), and the output ends of the motors (9) are connected with the lead screws (8), the lower end of the guide post (7) is fixed on the lower end plate (11), and the lower end plate (11) is fixed on the base (1).
2. The three-degree-of-freedom displacement platform for the ship as claimed in claim 1, wherein the connecting rod assemblies (15) have 6 groups, and each movable seat (4) is connected with the platform surface (2) through 2 groups of connecting rod assemblies (15).
3. The three-degree-of-freedom displacement platform for the ship as claimed in claim 1, wherein there are 6 guide sleeves (6), 2 guide sleeves (6) are arranged on each movable seat (4), the 2 guide sleeves (6) are respectively sleeved on 2 guide pillars (7) which are vertically fixed with the lower end plate (11), and the upper ends of the 2 guide pillars (7) are vertically fixed on the upper end plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011070372.3A CN112193371A (en) | 2020-10-09 | 2020-10-09 | Three-degree-of-freedom displacement platform for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011070372.3A CN112193371A (en) | 2020-10-09 | 2020-10-09 | Three-degree-of-freedom displacement platform for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112193371A true CN112193371A (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011070372.3A Pending CN112193371A (en) | 2020-10-09 | 2020-10-09 | Three-degree-of-freedom displacement platform for ship |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121351A1 (en) * | 2001-05-31 | 2003-07-03 | Clement Gosselin | Cartesian parallel manipulators |
| US20040154518A1 (en) * | 2000-02-26 | 2004-08-12 | Hadcroft John Mackay | Mooring device |
| WO2007004413A1 (en) * | 2005-06-30 | 2007-01-11 | Kabushiki Kaisha Yaskawa Denki | Translating/turning 2-degree-of-freedom stage device and 3-degree-of-freedom stage device using the same |
| CN104627857A (en) * | 2015-02-16 | 2015-05-20 | 哈尔滨工程大学 | Active heave compensation experimental device |
| KR101554952B1 (en) * | 2014-07-15 | 2015-09-22 | 대우조선해양 주식회사 | Model Test Tank |
| CN104950797A (en) * | 2015-04-30 | 2015-09-30 | 中国矿业大学 | 3-PRRS six-DOF (degrees of freedom) parallel positioning platform |
| CN109625177A (en) * | 2019-01-09 | 2019-04-16 | 上海海事大学 | A kind of Three Degree Of Freedom compensation of undulation platform |
| CN210284532U (en) * | 2019-07-03 | 2020-04-10 | 哈尔滨工程大学 | Marine device of leaning on of stepping on with wave compensation function |
-
2020
- 2020-10-09 CN CN202011070372.3A patent/CN112193371A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040154518A1 (en) * | 2000-02-26 | 2004-08-12 | Hadcroft John Mackay | Mooring device |
| US20030121351A1 (en) * | 2001-05-31 | 2003-07-03 | Clement Gosselin | Cartesian parallel manipulators |
| WO2007004413A1 (en) * | 2005-06-30 | 2007-01-11 | Kabushiki Kaisha Yaskawa Denki | Translating/turning 2-degree-of-freedom stage device and 3-degree-of-freedom stage device using the same |
| KR101554952B1 (en) * | 2014-07-15 | 2015-09-22 | 대우조선해양 주식회사 | Model Test Tank |
| CN104627857A (en) * | 2015-02-16 | 2015-05-20 | 哈尔滨工程大学 | Active heave compensation experimental device |
| CN104950797A (en) * | 2015-04-30 | 2015-09-30 | 中国矿业大学 | 3-PRRS six-DOF (degrees of freedom) parallel positioning platform |
| CN109625177A (en) * | 2019-01-09 | 2019-04-16 | 上海海事大学 | A kind of Three Degree Of Freedom compensation of undulation platform |
| CN210284532U (en) * | 2019-07-03 | 2020-04-10 | 哈尔滨工程大学 | Marine device of leaning on of stepping on with wave compensation function |
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