阅读说明：本技术 一种大型船只或船坞甲板延长装置及控制方法 (Large ship or dock deck extension device and control method ) 是由 葛文军 张燕军 张纯 张善文 宣胜 于 2020-05-22 设计创作，主要内容包括：本发明涉及一种大型船只或船坞甲板延长装置及控制方法,船首、船尾位置各设置一个甲板延长装置,甲板延长装置包括中控系统、移动甲板、移动机构、减阻机构、举升机构、备用甲板；移动甲板靠近船首、船尾的下方间隔等距的设置移动机构、减阻机构,移动甲板下方的船体内安装备用甲板、举升机构,备用甲板固定联接在举升机构上,移动机构、减阻机构间隔等距的固定安装于船首、船尾的位置,移动甲板匹配安装于移动机构、减阻机构上面并沿船首、船尾方向移动。本发明容易保养、检查、维修,特别适用于大型船只或船坞起降飞机需要延长甲板的状况。(The invention relates to a large ship or dock deck extension device and a control method, wherein the positions of a bow and a stern are respectively provided with a deck extension device, and the deck extension device comprises a central control system, a mobile deck, a mobile mechanism, a resistance reducing mechanism, a lifting mechanism and a spare deck; the lower part of the movable deck close to the bow and the stern is provided with a moving mechanism and a drag reduction mechanism at equal intervals, a spare deck and a lifting mechanism are arranged in the hull below the movable deck, the spare deck is fixedly connected to the lifting mechanism, the moving mechanism and the drag reduction mechanism are fixedly arranged at the positions of the bow and the stern at equal intervals, and the movable deck is arranged on the moving mechanism and the drag reduction mechanism in a matching way and moves along the directions of the bow and the stern. The invention is easy to maintain, check and repair, and is particularly suitable for the condition that a large ship or a dock take-off and landing airplane needs to prolong a deck.)

1. The utility model provides a large ship or dock deck extension fixture, includes hull (1), hull deck (19), sets up in the deck extension fixture (2) of bow, stern position of hull (1), characterized by: the deck extension device (2) comprises a central control system, a mobile deck (17), a mobile mechanism (4), a resistance reducing mechanism (8), a lifting mechanism (11) and a spare deck (15);

the movable deck (17) is provided with a movable mechanism (4) and a drag reduction mechanism (8) at equal intervals below the bow and the stern, a spare deck (15) and a lifting mechanism (11) are arranged in the ship body (1) below the movable deck (17), the spare deck (15) is fixedly connected to the lifting mechanism (11), the movable mechanism (4) and the drag reduction mechanism (8) are fixedly arranged at the positions of the bow and the stern at equal intervals, and the movable deck (17) is arranged on the movable mechanism (4) and the drag reduction mechanism (8) in a matched mode and moves along the directions of the bow and the stern; a plurality of positioning pins (14) are arranged on the standby deck (15); a plurality of locking pin sleeves (37) and locking units (6) are arranged on the moving mechanism (4);

the two sides of the movable deck (17) along the moving direction are provided with C-shaped turned edges (3), the C-shaped turned edges (3) are matched with the side of the ship body (1) through slide rails, a plurality of concave track grooves are formed in the lower surface of the movable deck (17) along the moving direction, the end surface of the movable deck (17) on one side of the ship body (1) is provided with a plurality of positioning holes (18) which are matched with positioning pins (14) on a spare deck (15), and the number of the positioning holes (18) is matched with the number of the positioning pins (14) matched with the spare deck (15); the sensor (16) is arranged at the bottom of the positioning hole (18), a plurality of locking holes (5) are arranged below the movable deck (17) and matched with locking pin sleeves (37) on the movable mechanism (4), a spring (7) is arranged in the middle of the bottom of each locking hole (5), a pressure sensor is arranged in the middle of each spring (7), the number of the locking holes (5) is larger than that of locking units (6) on the movable mechanism (4), and the distances between the locking holes (5) in the moving direction are equal; the length of the mobile deck (17) is greater than or equal to that of the standby deck (15) and less than twice of the length of the bow and the stern;

the moving mechanism (4) consists of a moving unit (9) and a locking unit (6); the moving unit (9) comprises a servo motor I (42), a reduction gearbox (43), a gear I (44) and a rack I (10), wherein the gear I (44) controlled by the servo motor I (42) is matched and meshed with the rack I (10), the rack I (10) is installed along the moving direction of the moving deck (17), and the servo motor I (42) is connected with the gear I (44) through the reduction gearbox (43) in a matching mode; the locking unit (6) comprises a servo motor II (41), a rotating wheel (40), a connecting rod (34), a locking pin sleeve (37), a fixing sleeve (33) and a position sensor (38), wherein straight pin holes are formed in two sides of the connecting rod (34), the locking pin sleeve (37) is in a piston shape with a small upper diameter and a large lower diameter, a locking pin sleeve straight pin hole (36) perpendicular to an axial lead is formed in the upper portion of the locking pin sleeve (37), a cavity matched with the connecting rod (34) is formed in the inner cavity of the locking pin sleeve (37), and the outer circle of the locking pin sleeve (37) is matched with a locking hole (5) formed in the lower portion of the movable deck (17); the edge of the rotating wheel (40) is provided with a cylindrical boss (39); after one side of the connecting rod (34) is matched with the cavity, a locking pin sleeve straight pin hole (36) which is perpendicular to the axial lead is arranged at the upper part of the locking pin sleeve (37) and is hinged through a straight pin, and the other side of the connecting rod (34) is hinged with a cylindrical boss (39) at the edge of the rotating wheel (40) through a bearing; the rotating wheel (40) is semicircular, the center of the rotating wheel (40) is connected with a servo motor II (41), the locking pin sleeve (37) is vertically placed and is righted and positioned through the fixed sleeve (33), the servo motor II (41) controls the rotating wheel (40) to rotate to drive the connecting rod (34) to move up and down to the lowest point, the top end (35) of the locking pin sleeve is lower than the fixed sleeve (33), and a position sensor (38) is arranged at an upper port of an inner hole of the fixed sleeve (33);

the resistance reducing mechanism (8) comprises a plurality of electromagnetic suspension units, and the electromagnetic suspension units and the moving unit (9) of the moving mechanism (4) are arranged below the ship body and the ship tail at equal intervals; the electromagnetic suspension unit comprises a box body (28), a coil (32), a supporting magnet (29), a guide plate (30), a guide magnet (27), a supporting plate (31) and a sensor (26); the cross section of the box body (28) is in a square shape, a notch is arranged below the box body, the box body (28) is fixedly connected along the moving direction of the moving deck (17), a supporting plate (31) is arranged at the notch below the box body (28) and is fixed with the ship body (1), a coil (32) is arranged above the inside of the box body (28), supporting magnets (29) are arranged at two sides of the coil (32), a guide plate (30) is arranged in the middle of the box body (28), and guiding magnets (27) are arranged at two sides of the inside of the box body (28); sensors (26) are arranged on two sides of a notch of the box body (28) below the tail end of the guide plate (30), and the length of the guide plate (30) is matched with that of the spare deck (15);

the lifting mechanism (11) is arranged in a lifting cabin of the ship body (1) below the movable deck (17), a plurality of electric control jacks (22) are arranged at the bottom of the lifting cabin, and a standby deck (15) is arranged on the electric control jacks (22);

the shape and the size of the spare deck (15) are matched with those of the lifting cabin, the two sides of the spare deck (15) are provided with process hole installation positioning units (20), and the two sides of the two ends of the spare deck (15) are respectively provided with a photoelectric sensor (13); the positioning unit (20) comprises a servo motor III (24) and a gear II (25), a rack II (23) is arranged on the positioning pin (14), the servo motor III (24) is in transmission connection with the gear II (25), the gear II (25) is in meshing connection with the rack II (23), the servo motor III (24) and the gear II (25) are matched with the rack II (23) arranged on the positioning pin (14), the positioning pin (14) is horizontally arranged in the process holes on two sides of the standby deck (15), and an inductor (16) is arranged at the bottom of each process hole; the positioning pin (14) is a cylinder, the front end of the positioning pin is provided with a taper, and a rack II (23) is arranged at a bus on one side of the excircle; positioning holes (18) are formed in the ship body deck (19), positioning pins (14) of a positioning unit (20) on one side of the standby deck (15) are matched with the positioning holes (18) formed in the movable deck (17), and the positioning pins (14) on the other side of the standby deck (15) are matched with the positioning holes (18) formed in the ship body deck (19);

the central control system consists of a PLC (programmable logic controller) and a Beidou navigation system, and the Beidou navigation system provides ship positioning; move inductor (16), pressure sensor at the bottom of deck (17) locating hole (18), moving mechanism (4) in the servo motor I (42) of mobile unit (9), servo motor II (41), position inductor (38) of locking unit (6), coil (32), direction magnet (27), sensor (26) of electromagnetism suspension unit in drag reduction mechanism (8), automatically controlled jack (22) of lifting mechanism (11), photoelectric sensing ware (13), inductor (16) of reserve deck (15) all connect the PLC controller through the signal line.

2. A large watercraft or dock deck extension device as claimed in claim 1 wherein: the box body (28) is a cuboid box body.

3. A method of controlling a large vessel or dock deck extension means according to any one of claims 1 to 2, wherein:

the ship body (1) is provided with a deck extension device (2) at the bow position and the stern position respectively, a plurality of moving mechanisms (4), a resistance reducing mechanism (8) and an electric control jack (22) are arranged at the bow position and the stern position at equal intervals under a moving deck (17) through load torsion calculation, and a plurality of positioning units (20) are arranged at two sides of a standby deck (15); the specific operation steps of the normal state of the deck of the ship or the dock, the elongation of the deck and the restoration of the deck to the normal state are as follows:

firstly, the deck is in a normal state;

1) the movable deck (17) is matched with the hull deck (19), the central control system controls a locking unit (6) in a movable mechanism (4) below the movable deck (17) to work through a PLC (programmable logic controller), a servo motor II (41) rotates to drive a rotating wheel (40) to rotate, the rotating wheel (40) drives a connecting rod (34) to move upwards, so that a locking pin sleeve (37) is pushed to start to move upwards from a fixed sleeve (33), the outer circle of the locking pin sleeve (37) is matched with a locking hole (5) below the movable deck (17), after a locking pin sleeve top (35) abuts against a pressure sensor arranged on a spring (7) at the bottom of the locking hole (5), a signal is transmitted back to the central control system, and the PLC of the central control system controls the servo motor II (41) to stop working; when all the locking units (6) finish working, the signal is transmitted back to the central control system;

2) the central control system controls a servo motor III (24) of a positioning unit (20) in the standby deck (15) to rotate through a PLC (programmable logic controller), the servo motor III (24) controls a gear II (25) to be meshed with a rack II (23) of a positioning pin (14), the positioning pin (14) is contracted into a process hole, and a signal is transmitted back to the central control system after the inner end (21) of the positioning pin is detected by a pressure sensor at the bottom of the process hole; the central control system controls all electric control jacks (22) in the lifting mechanism (11) to work through the PLC controller, so that the standby deck (15) is arranged in the lifting cabin;

3) the central control system controls a coil (32) and a guide magnet (27) of an electromagnetic suspension unit of a drag reduction mechanism (8) in a moving mechanism (4) under a moving deck (17) to be in a power off state through a PLC (programmable logic controller), the moving deck (17) is matched with a ship deck (19), a ship works in a deck state with a normal length, and the central control system stops a working program;

(II) deck extension;

when the ship takes off and lands the airplane operation, the central control system controls the deck extension devices (2) arranged at the bow and the stern to simultaneously work and extend the decks and also can work and extend the decks successively; the working process of the deck extension device (2) is as follows:

1) the central control system is started, the central control system controls a servo motor II (41) of a locking unit (6) in a lower moving mechanism (4) of a moving deck (17) to enable a rotating wheel (40) to rotate through a PLC, the rotating wheel (40) drives a connecting rod (34) to move downwards, the connecting rod (34) drives a locking pin sleeve (37) to start to move downwards along a locking hole (5) below the moving deck (17), when the top (35) of the locking pin sleeve moves downwards into a fixed sleeve (33), a position sensor (38) arranged in the fixed sleeve (33) works, a signal is transmitted back to the central control system, and the central control system controls the servo motor II (41) to stop working; when all the locking units (6) finish working, a signal is transmitted back to the central control system, and the central control system enters the next working procedure;

2) then the central control system controls a servo motor I (42) of a mobile unit (9) in a lower mobile mechanism (4) of the mobile deck (17) to rotate through a PLC controller, a gear I (44) is controlled to be meshed with a rack I (10) through a reduction box (43), and the rack I (10) drives the mobile deck (17) to move outwards slowly;

meanwhile, the central control system controls a coil (32) and a guide magnet (27) of an electromagnetic suspension unit of a drag reduction mechanism (8) in a lower moving mechanism (4) of a moving deck (17) to be connected with a power supply through a PLC controller to generate magnetic force, the box body (28) generates magnetic suspension effect under the action of a guide plate (30), a support plate (31) and the magnetic force, so that the resistance is reduced when the box body (28) drives the moving deck (17) to move outwards, at the moment, the moving deck (17) moves outwards to enable the ship bow and the ship stern to be separated from a spare deck (15) through slide rails which are arranged on two sides of a C-shaped turned edge (3) in a matching way, when the guide plate (30) moves to the bottom surface of the box body (28), a signal is transmitted back to the central control system, and the central control system controls the coil (32) and the guide magnet (27) to;

when all the mobile units (9) and the resistance reducing mechanisms (8) work, the signals are transmitted back to the central control system, and the central control system enters the next working procedure;

3) the central control system controls all the electric control jacks (22) in the lifting mechanism (11) to work through the PLC, so that the standby deck (15) is lifted slowly in the lifting cabin, when the standby deck is lifted to be as high as the mobile deck (17) and the ship deck (19), the photoelectric sensor (13) works, a signal is transmitted back to the central control system, and the central control system controls all the electric control jacks (22) to stop working through the PLC; the central control system enters the next working procedure;

4) the central control system controls the positioning units (20) on two sides of the standby deck (15) to work through the PLC, a servo motor III (24) of the positioning unit (20) rotates, the servo motor III (24) controls a gear II (25) to be meshed with a rack II (23) of a positioning pin (14), so that the positioning pin (14) extends out to be matched with the positioning hole (18), the PLC controls the positioning pin (14) to be matched and positioned with the positioning hole (18) formed in the movable deck (17) and the positioning hole (18) formed in the hull deck (19) through a positioning pin taper (12), when the positioning pin (14) is detected by a pressure sensor at the bottom of the positioning hole (18), a signal is transmitted back to the central control system, and the central control system controls the servo motor III (24) to stop working through the PLC; when all the positioning units (20) finish working, a signal is transmitted back to the central control system, and the central control system enters the next working program;

5) the central control system controls a servo motor II (41) of a locking unit (6) in a moving mechanism (4) below a moving deck (17) to enable a rotating wheel (40) to rotate through a PLC (programmable logic controller), the rotating wheel (40) drives a connecting rod (34) to move upwards, the connecting rod (34) pushes a locking pin sleeve (37) to start to move upwards from a fixed sleeve (33), the outer circle of the locking pin sleeve (37) is matched with a locking hole (5) below the moving deck (17), and after the locking pin sleeve abuts against a pressure sensor arranged on a spring (7) at the bottom of the locking hole (5), a signal is transmitted back to the central control system, and the central control system controls the servo motor II (41) to stop working through the PLC;

when all the locking units (6) finish working, a signal is transmitted back to the central control system, and the central control system enters the next working procedure;

6) at the moment, the movable deck (17) moves to extend the deck, and the central control system stops working procedures; the airplane is positioned on the extended deck by using a Beidou navigation system to land safely or operate;

(III) the length of the deck is recovered to a normal state;

after the ship finishes the operation of taking off and landing the airplane, the central control system controls the deck extension devices (2) arranged at the bow and the stern to enable the deck to be recovered to a normal state; the working process of the deck extension device (2) for recovering the normal state is as follows:

1) the central control system controls the positioning units (20) on two sides of the standby deck (15) to work through the PLC, a servo motor III (24) of the positioning unit (20) rotates, the servo motor III (24) controls a gear II (25) to be meshed with a rack II (23) of a positioning pin (14), the positioning pin (14) retracts from a positioning hole (18), when the positioning pin (14) retracts into a process hole, a signal is transmitted back to the central control system after an inner end (21) of the positioning pin is detected by a pressure sensor at the bottom of the process hole, and the central control system controls the servo motor III (24) to stop working through the PLC; when all the positioning units (20) finish working, a signal is transmitted back to the central control system, and the central control system enters the next working program;

2) the central control system controls all electric control jacks (22) in the lifting mechanism (11) to work through the PLC, so that the standby deck (15) is slowly lowered in the lifting cabin, when the standby deck is lowered to the original position, the photoelectric sensor (13) works, a signal is transmitted back to the central control system, and the central control system controls all the electric control jacks (22) to stop working through the PLC; the central control system enters the next working procedure;

3) the central control system controls a servo motor II (41) of a locking unit (6) in a moving mechanism (4) below a moving deck (17) to enable a rotating wheel (40) to rotate through a PLC (programmable logic controller), the rotating wheel (40) drives a connecting rod (34) to move downwards, the connecting rod (34) drives a locking pin sleeve (37) to start to move downwards along a locking hole (5) below the moving deck (17), when the top (35) of the locking pin sleeve moves downwards into a fixed sleeve (33), a position sensor (38) arranged in the fixed sleeve (33) works, a signal is transmitted back to the central control system, and the central control system controls the servo motor II (41) to stop working; when all the locking units (6) finish working, a signal is transmitted back to the central control system, and the central control system enters the next working procedure;

4) then the central control system controls a servo motor I (42) of a mobile unit (9) in a lower mobile mechanism (4) of the mobile deck (17) to rotate through a PLC controller, a gear I (44) is controlled to be meshed with a rack I (10) through a reduction box (43), and the rack I (10) drives the mobile deck (17) to slowly move towards a ship body deck (19);

meanwhile, a central control system controls a coil (32) of an electromagnetic suspension unit of a drag reduction mechanism (8) in a moving mechanism (4) below a moving deck (17) and a guide magnet (27) to be connected with a power supply to generate magnetic force through a PLC controller, a box body (28) generates a magnetic suspension effect under the action of a guide plate (30), a support plate (31) and the magnetic force, so that the box body (28) drives the moving deck (17) to move towards a hull deck (19) to reduce resistance, at the moment, the moving deck (17) moves towards the hull deck (19) through slide rails with C-shaped turned edges (3) at two sides in matched installation with the hull deck, and after the moving deck (17) is contacted with the hull deck (19), a signal is transmitted back to the central control system, and the central control system enters the next working program;

5) the central control system controls a locking unit (6) in a moving mechanism (4) below a moving deck (17) to work through a PLC (programmable logic controller), a servo motor II (41) rotates to drive a rotating wheel (40) to rotate, the rotating wheel (40) drives a connecting rod (34) to move upwards, so that a locking pin sleeve (37) is pushed to start to move upwards from a fixed sleeve (33), the outer circle of the locking pin sleeve (37) is matched with a locking hole (5) below the moving deck (17), after a locking pin sleeve top (35) abuts against a pressure sensor arranged on a spring (7) at the bottom of the locking hole (5), a signal is transmitted to the PLC of the central control system, and the PLC of the central control system controls the servo motor II (41) to stop working; when all the locking units (6) finish working, the signal is transmitted back to the central control system;

6) the central control system controls a coil (32) and a guide magnet (27) of an electromagnetic suspension unit of a drag reduction mechanism (8) in a moving mechanism (4) under a moving deck (17) to be in a power off state through a PLC (programmable logic controller), the moving deck (17) is matched with a ship deck (19), a ship works in a deck state with a normal length, and the central control system stops a working program;

7) when all the locking units (6) finish working, a signal is transmitted back to the central control system, and the central control system stops working; and the mobile deck (17) is restored to the normal state.

Technical Field

The invention relates to a device for extending a deck of a large ship or a dock and a control method, in particular to a device for extending the length of the deck of the large ship or the dock under a specific condition, which comprises the device for extending the length of the deck and recovering the deck to be normal, and an intelligent accurate control method.

Background

In marine navigation vessels, particularly large vessels sailing in deep blue, the purpose can be achieved only by requiring a deck to reach a certain length when taking off and landing airplanes or other special operations are needed for air transportation and maintenance; or floating oil extraction and drilling equipment and a berthed large dock need to reach a certain length when a plane needs to take off and land for air transportation or other special operations, and the deck needs to be prolonged to achieve the aim of taking off and landing the plane under the above conditions; in the prior art, no similar technology exists; the invention solves the problems, prolongs the deck to return to the normal state after the deck finishes taking off and landing an airplane or other special tasks, and avoids influencing the navigation safety and the speed influenced by wind resistance.

Disclosure of Invention

The present invention is directed to solve the above problems of the prior art, and an object of the present invention is to provide a device and a method for extending a deck of a large ship or dock, which can quickly and reliably perform deck extension and can control the deck to return to a normal state after a takeoff and landing aircraft or other special tasks are completed. The device is easy to maintain, inspect, maintain and drive.

The invention aims to realize the purpose that the deck extension device of the large ship or the dock is characterized in that the positions of the bow and the stern are respectively provided with a deck extension device, and the deck extension device comprises a central control system, a movable deck, a moving mechanism, a drag reduction mechanism, a lifting mechanism and a spare deck; the lower part of the movable deck close to the bow and the stern is provided with a moving mechanism and a drag reduction mechanism at equal intervals, a spare deck and a lifting mechanism are arranged in the hull below the movable deck, the spare deck is fixedly connected to the lifting mechanism, the moving mechanism and the drag reduction mechanism are fixedly arranged at the positions of the bow and the stern at equal intervals, and the movable deck is arranged on the moving mechanism and the drag reduction mechanism in a matching way and moves along the directions of the bow and the stern.

The central control system consists of a PLC controller and a Beidou navigation system;

the two sides of the movable deck along the moving direction are provided with C-shaped turned edges which are matched with the ship board through slide rails, the lower side of the movable deck along the moving direction is provided with a plurality of concave track grooves, the end surface of the movable deck on one side of the ship body is provided with a certain number of positioning holes which are matched with the positioning pins of the spare deck, and the number of the positioning holes is matched with the number of the positioning pins matched with the spare deck; the bottom of the positioning hole is provided with a sensor, a certain number of locking holes are arranged below the movable deck and matched with locking pin sleeves of the movable mechanism, a spring is arranged in the middle of the bottom of each locking hole, a pressure sensor is arranged in the middle of each spring, the number of the locking holes is matched with the number of locking units of the movable mechanism, and the distances between the locking holes in the moving direction are equal; the length of the movable deck is more than or equal to that of the standby deck and is less than two times of the length of the bow and the stern;

the moving mechanism consists of a moving unit and a locking unit; the moving unit comprises a servo motor I, a reduction gearbox, a gear I and a rack I, wherein the gear I controlled by the servo motor I is matched and meshed with the rack I, the rack I is installed along the moving direction, and the servo motor I is connected with the gear I in a matching manner through the reduction gearbox; the locking unit consists of a servo motor II, a rotating wheel, a connecting rod, a locking pin sleeve, a fixed sleeve and a position sensor, wherein straight pin holes are formed in two sides of the connecting rod, the locking pin sleeve is in a piston shape with a small upper part diameter and a large lower part diameter, a straight pin hole vertical to an axial lead is formed in the upper part of the locking pin sleeve, a cavity matched with the connecting rod is formed in the inner cavity of the locking pin sleeve, the outer circle of the locking pin sleeve is matched with a locking hole formed in the lower surface of a movable deck, after one side of the connecting rod is matched with the cavity, the straight pin hole vertical to the axial lead is formed in the upper part of the locking pin sleeve and hinged through a straight pin, and a straight pin hole in the; the rotating wheel is semicircular, a cylindrical boss is arranged at the edge of the rotating wheel, the center of the rotating wheel is connected with a servo motor II, a locking pin sleeve is vertically placed and is righted and positioned by a fixed sleeve, the servo motor II controls the rotating wheel to rotate to drive a connecting rod to move up and down to the lowest point, the top end of the locking pin sleeve is lower than the fixed sleeve, and a position sensor is arranged at an upper port of an inner hole of the fixed sleeve;

the resistance reducing mechanism consists of a certain number of electromagnetic suspension units, and the electromagnetic suspension units and the moving units of the moving mechanism are arranged below the ship body and the stern at equal intervals; the electromagnetic suspension unit is a rectangular box body and consists of a box body, a coil, a supporting magnet, a guide plate, a guide magnet, a supporting plate and a sensor; the cross section of the box body is in a shape of a square, a notch is arranged below the box body, the box body is fixedly connected along the moving direction of the moving deck, a supporting plate is arranged at the notch below the box body and fixed with the ship body, a coil is arranged above the box body, supporting magnets are arranged at two sides of the coil, a guide plate is arranged in the middle of the box body, and guiding magnets are arranged at two sides in the box body; sensors are arranged on two sides of a box body notch below the tail end of the guide plate, and the length of the guide plate is matched with that of the spare deck;

the lifting mechanism is arranged in a lifting cabin of the ship body below the movable deck, a proper number of electric control jacks are arranged at the bottom of the lifting cabin, and a spare deck is arranged on the electric control jacks;

the shape and the size of the standby deck are matched with those of the lifting cabin, process hole installation positioning units are arranged on two sides of the standby deck, and photoelectric sensors are arranged on two sides of two ends of the standby deck respectively; the positioning unit is characterized in that a gear II controlled by a servo motor III is matched with a rack II arranged on a positioning pin, the positioning pin is horizontally arranged in a process hole on two sides of a standby deck, an inductor is arranged at the bottom of the process hole, the positioning pin is a cylinder, the front end of the positioning pin is provided with a taper, and a rack II is arranged at a bus on one side of an excircle; a positioning pin of the positioning unit at one side of the spare deck is matched with a positioning hole arranged on the movable deck, and a positioning pin at the other side of the spare deck is matched with a positioning hole arranged on the deck of the ship body;

the device comprises an inductor and a pressure sensor at the bottom of a positioning hole of a mobile deck, a servo motor I of a mobile unit in a mobile mechanism, a servo motor II of a locking unit, a position inductor, a coil, a guide magnet and a sensor of an electromagnetic suspension unit in a resistance reducing mechanism, an electric control jack of a lifting mechanism, a photoelectric inductor and an inductor of a standby deck, wherein the photoelectric inductor and the inductor are connected with a PLC (programmable logic controller) through signal lines, a Beidou navigation system provides ship positioning, and the PLC and the Beidou navigation system form a central control system.

A method for using a large ship or dock deck extension device is characterized in that when a deck is in a normal state, a movable deck is matched with a ship deck, a central control system controls a locking unit in a downward movement mechanism of the movable deck to work through a PLC (programmable logic controller), a servo motor II rotates to drive a rotating wheel to rotate, the rotating wheel drives a connecting rod to move upwards, so that a locking pin sleeve is pushed to move upwards from a fixed sleeve, the outer circle of the locking pin sleeve is matched with a locking hole below the movable deck, and after the top of the locking pin sleeve abuts against a pressure sensor arranged on a spring at the bottom of the locking hole, the central control system controls the servo motor II to; after all the locking units work, the central control system controls a servo motor III of the positioning unit in the standby deck to rotate through the PLC, the servo motor III controls a gear II to be meshed with a rack II of the positioning pin, the positioning pin is contracted into the technical hole, and the inner end of the positioning pin is detected by a pressure sensor at the bottom of the technical hole. The projection area under the deck normal state avoids influencing navigation safety and wind resistance influence speed, makes large-scale dock or ship safer.

When the deck is required to be extended, the central control system controls the deck extending devices arranged at the bow and the stern to simultaneously work and extend the deck or successively work and extend the deck. Starting a central control system, controlling a servo motor II of a locking unit in a movable mechanism for moving a deck downwards by the central control system through a PLC controller to enable a rotating wheel to rotate, driving a connecting rod to move downwards by the rotating wheel, driving a locking pin sleeve to start to move downwards along a locking hole below the movable deck by the connecting rod, when the top of the locking pin sleeve moves downwards into a fixed sleeve, a position sensor arranged in the fixed sleeve works, and controlling the servo motor II to stop working by the central control system; and when all the locking units finish working, the central control system enters the next working procedure. Then the central control system controls a servo motor I of a moving unit in the moving mechanism under the moving deck through a PLC controller, a gear I is controlled by a reduction gearbox to be meshed with a rack I, and the rack I drives the moving deck to move outwards slowly. Meanwhile, the central control system controls a coil and a guide magnet of an electromagnetic suspension unit of a drag reduction mechanism in the movable mechanism under the movable deck to be connected with a power supply through a PLC controller to generate magnetic force, the box body generates a magnetic suspension effect under the action of a guide plate, a support plate and the magnetic force, so that resistance is reduced when the box body drives the movable deck to move outwards, the movable deck moves outwards to enable the bow and the stern to be separated by a spare deck, and when the guide plate moves to the bottom surface of the box body and a sensor is arranged, the central control system controls the coil and the guide magnet to be disconnected. And after all the mobile units and the resistance reducing mechanisms work, the central control system enters the next working procedure. The central control system controls all the electric control jacks in the lifting mechanism to work through the PLC, so that the standby deck is lifted slowly in the lifting cabin, when the standby deck is lifted to be as high as the mobile deck and the ship deck, the photoelectric sensors work, and the central control system controls all the electric control jacks to stop working through the PLC; and the central control system enters the next working procedure. The central control system controls the positioning units on two sides of the standby deck to work through the PLC, a servo motor III of the positioning unit rotates, a gear II is controlled by the servo motor III to be meshed with a rack II of a positioning pin, so that the positioning unit extends out to be matched with the positioning hole, the PLC controls the positioning pin to be matched and positioned with the positioning hole formed in the movable deck and the positioning hole formed in the hull deck through the taper of the positioning pin, and the central control system controls the servo motor III to stop working through the PLC after the positioning pin is detected by a pressure sensor at the bottom of the positioning hole; and after all the positioning units complete working, the central control system enters the next working program. The central control system controls a servo motor II of a locking unit in the movable deck downward movement mechanism to rotate through a PLC controller, the rotating wheel drives a connecting rod to move upwards, the connecting rod pushes a locking pin sleeve to move upwards from a fixed sleeve, the excircle of the locking pin sleeve is matched with a locking hole below the movable deck, and after the locking pin sleeve abuts against a pressure sensor arranged on a spring at the bottom of the locking hole, the central control system controls the servo motor II to stop working through the PLC controller; and after all the locking units complete working, the central control system enters the next working procedure. At the moment, the mobile deck moves and the extension deck is finished, and the central control system stops working procedures. The plane is positioned on the extended deck by using the Beidou navigation system to land safely or perform other special operations.

When the length of the deck is recovered to a normal state, the central control system controls the program of the deck extension operation steps to perform reverse operation, and the central control system controls the operation steps of the deck in a normal state.

The invention provides a platform for taking off and landing aircraft formed by extending a deck when floating oil production and drilling equipment, berthed large-scale docks or sailing large-scale ships and the like need air transportation and feeding or other special operations. The invention is easy to maintain, check and maintain, is particularly suitable for the condition that a deck needs to be prolonged when a large ship or a dock takes off and lands an airplane, can make the deck return to a normal state after operation, realizes the reduction of the projection area, avoids influencing the navigation safety and avoiding influencing the speed by wind resistance, and makes a large dock or a ship safer.

The invention relates to a deck extension device of a ship or a dock for ocean, in particular to a device for extending the length of a deck of a large ship or a dock under specific conditions, which comprises the deck length extension and the deck recovery normality, and an intelligent precise control method. The device is easy to check and drive, and particularly when a long-range operation ship needs air transportation for feeding or other special operations, the deck is prolonged to form a platform of the take-off and landing aircraft, so that the operation is fast and stable, and the efficiency and the power can be improved in a geometric grade. Has great economic benefit.

Drawings

Figure 1 is a schematic front view of the deck extension apparatus of the present invention.

Figure 2 is a schematic top view of the deck extension apparatus of the present invention.

Fig. 3 is a schematic front view of a mobile deck in the deck extension fixture of the present invention.

FIG. 4 is a schematic view of the C-shaped edge of the mobile deck of the present invention.

Fig. 5 is a schematic front view of a moving mechanism in the deck lengthening device of the present invention.

Fig. 6 is a schematic structural diagram of a drag reduction mechanism in the deck lengthening device of the invention.

Fig. 7 is a schematic front view of a lifting mechanism in the deck lengthening device of the invention.

FIG. 8 is a schematic top view of a moving unit in the moving mechanism of the present invention.

Fig. 9 is a front view schematically showing a state of a locking deck of the locking unit in the moving mechanism of the present invention.

Fig. 10 is a front view schematically showing a state where the locking unit is separated from the deck in the moving mechanism of the present invention.

Fig. 11 is a front view of a positioning unit in the standby deck of the present invention.

Figure 12 is a top view of the positioning unit in the alternate deck of the present invention.

Fig. 13 is a front view of the deck of the present invention in a normal state.

Fig. 14 is a schematic top view of the deck of the present invention in a normal state.

Fig. 15 is a schematic elevation view of the deck extension process of the present invention.

Fig. 16 is a front view schematically illustrating the extended state of the deck according to the present invention.

In the figure: 1 hull, 2 deck extension devices, 3C-shaped turned edges, 4 moving mechanisms, 5 locking holes, 6 locking units, 7 springs, 8 drag reduction mechanisms, 9 moving units, 10 racks I, 11 lifting mechanisms, 12 positioning pin tapers, 13 photoelectric sensors, 14 positioning pins, 15 standby decks, 16 sensors, 17 moving decks, 18 positioning holes, 19 hull decks, 20 positioning units, 21 positioning pin inner ends and 22 electric control jacks, 23 rack II, 24 servo motor III, 25 gear II, 26 sensor, 27 guide magnet, 28 box body, 29 support magnet, 30 guide plate, 31 support plate, 32 coil, 33 fixed sleeve, 34 connecting rod, 35 locking pin sleeve top, 36 locking pin sleeve straight pin hole, 37 locking pin sleeve, 38 position sensor, 39 cylindrical boss, 40 rotating wheel, 41 servo motor II, 42 servo motor I, 43 reduction box and 44 gear I.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12; a large ship or dock deck extension device comprises a ship body 1, a ship deck 19 and deck extension devices 2 arranged at the bow and stern positions of the ship body 1, wherein each deck extension device 2 comprises a central control system, a mobile deck 17, a mobile mechanism 4, a drag reduction mechanism 8, a lifting mechanism 11 and a spare deck 15; the moving mechanism 4 and the drag reduction mechanism 8 are arranged below the moving deck 17 close to the bow and the stern at equal intervals, the spare deck 15 and the lifting mechanism 11 are arranged in the ship body 1 below the moving deck 17, the spare deck 15 is fixedly connected to the lifting mechanism 11, the moving mechanism 4 and the drag reduction mechanism 8 are fixedly arranged at the positions of the bow and the stern at equal intervals, and the moving deck 17 is arranged above the moving mechanism 4 and the drag reduction mechanism 8 in a matched mode and moves along the directions of the bow and the stern; a plurality of positioning pins 14 are arranged on the standby deck 15; the moving mechanism 4 is provided with a plurality of locking pin sleeves 37 and locking units 6.

As shown in fig. 1 and 4, C-shaped turned edges 3 are arranged on two sides of the movable deck 17 along the moving direction, the C-shaped turned edges 3 are matched with the side of the ship body 1 through slide rails, a plurality of concave rail grooves are arranged below the movable deck 17 along the moving direction, a plurality of positioning holes 18 are arranged on the end surface of one side of the ship body 1 of the movable deck 17 and matched with the positioning pins 14 on the spare deck 15, and the number of the positioning holes 18 is matched with the number of the positioning pins 14 matched with the spare deck 15; the inductor 16 is arranged at the bottom of the positioning hole 18, a plurality of locking holes 5 are arranged below the movable deck 17 and matched with locking pin sleeves 37 on the movable mechanism 4, a spring 7 is arranged in the middle of the bottom of each locking hole 5, a pressure sensor is arranged in the middle of each spring 7, the number of the locking holes 5 is larger than that of the locking units 6 on the movable mechanism 4, and the distances between the locking holes 5 in the moving direction are equal; the length of the mobile deck 17 is greater than or equal to the length of the spare deck 15 and less than twice the length of the bow and the stern.

As shown in fig. 1, 2, 3 and 4, the moving mechanism 4 is composed of a moving unit 9 and a locking unit 6; as shown in fig. 8, the moving unit 9 includes a servo motor i 42, a reduction box 43, a gear i 44, and a rack i 10, wherein the gear i 44 controlled by the servo motor i 42 is matched and meshed with the rack i 10, the rack i 10 is installed along the moving direction of the moving deck 17, and the servo motor i 42 is matched and connected with the gear i 44 through the reduction box 43. As shown in fig. 9 and 10, the locking unit 6 includes a servo motor ii 41, a rotating wheel 40, a connecting rod 34, a locking pin sleeve 37, a fixing sleeve 33, and a position sensor 38, wherein two sides of the connecting rod 34 are provided with straight pin holes, the locking pin sleeve 37 is in a piston shape with a small upper diameter and a large lower diameter, the upper part of the locking pin sleeve 37 is provided with a locking pin sleeve straight pin hole 36 perpendicular to the axis, a cavity matched with the connecting rod 34 is arranged in the inner cavity of the locking pin sleeve 37, and the outer circle of the locking pin sleeve 37 is matched with a locking hole 5 arranged below the movable deck 17; the edge of the rotating wheel 40 is provided with a cylindrical boss 39; after one side of the connecting rod 34 is matched with the cavity, a locking pin sleeve straight pin hole 36 which is perpendicular to the axial lead is arranged at the upper part of the locking pin sleeve 37 and is hinged through a straight pin, and a straight pin hole at the other side of the connecting rod 34 is hinged with a cylindrical boss 39 at the edge of the rotating wheel 40 and passes through a bearing when being hinged; the rotating wheel 40 is semicircular, the center of the rotating wheel 40 is connected with the servo motor II 41, the locking pin sleeve 37 is vertically placed and is centered and positioned through the fixed sleeve 33, the servo motor II 41 controls the rotating wheel 40 to rotate to drive the connecting rod 34 to move up and down to the lowest point, the top end 35 of the locking pin sleeve is lower than the fixed sleeve 33, and a position sensor 38 is arranged at an upper port of an inner hole of the fixed sleeve 33.

As shown in fig. 1, 2 and 6, the drag reduction mechanism 8 comprises a plurality of electromagnetic suspension units which are arranged below the moving unit 9 of the moving mechanism 4 at equal intervals and close to the bow and the stern; the electromagnetic suspension unit comprises a box body 28, a coil 32, a supporting magnet 29, a guide plate 30, a guide magnet 27, a supporting plate 31 and a sensor 26; the section of the box body 28 is in a square shape, a gap is arranged below the box body 28, the box body 28 is fixedly connected along the moving direction of the moving deck 17, a supporting plate 31 is arranged at the gap below the box body 28 and is fixed with the ship body 1, a coil 32 is arranged above the inside of the box body 28, supporting magnets 29 are arranged on two sides of the coil 32, a guide plate 30 is arranged in the middle of the box body 28, and guiding magnets 27 are arranged on two sides of the inside of the box body; the sensors 26 are arranged at two sides of the notch of the box body 28 below the tail end of the guide plate 30, and the length of the guide plate 30 is matched with that of the spare deck 15.

As shown in fig. 1, 2 and 7, the lifting mechanism 11 is installed in a lift cabin of the hull 1 below the mobile deck 17, a plurality of electrically controlled jacks 22 are installed at the bottom of the lift cabin, and the spare deck 15 is installed on the electrically controlled jacks 22; the shape and the size of the standby deck 15 are matched with those of the lifting cabin, the two sides of the standby deck 15 are provided with process hole installation positioning units 20, and the two sides of the two ends of the standby deck 15 are respectively provided with a photoelectric sensor 13; the positioning unit 20 comprises a servo motor III 24 and a gear II 25, a rack II 23 is arranged on the positioning pin 14, the servo motor III 24 is in transmission connection with the gear II 25, the gear II 25 is in meshing connection with the rack II 23, the servo motor III 24 and the gear II 25 are matched with the rack II 23 arranged on the positioning pin 14, the positioning pin 14 is horizontally arranged in the process holes in two sides of the standby deck 15, and the bottom of each process hole is provided with an inductor 16; the positioning pin 14 is a cylinder, the front end of the positioning pin is provided with a taper, and a rack II 23 is arranged at a bus on one side of the excircle; the hull deck 19 is provided with positioning holes 18, the positioning pins 14 of the positioning units 20 on one side of the spare deck 15 are matched with the positioning holes 18 arranged on the movable deck 17, and the positioning pins 14 on the other side of the spare deck 15 are matched with the positioning holes 18 arranged on the hull deck 19.

As shown in fig. 1, 2 and 3, the central control system is composed of a PLC controller and a beidou navigation system, and the beidou navigation system provides ship positioning; the sensor 16 and the pressure sensor at the bottom of the positioning hole 18 of the movable deck 17, the servo motor I42 of the movable unit 9 in the movable mechanism 4, the servo motor II 41 and the position sensor 38 of the locking unit 6, the coil 32, the guide magnet 27 and the sensor 26 of the electromagnetic suspension unit in the drag reduction mechanism 8, the electric control jack 22 of the lifting mechanism 11, and the photoelectric sensor 13 and the sensor 16 of the spare deck 15 are all connected with a PLC (programmable logic controller) through signal lines.

The invention is easy to maintain, check and repair under the control operation of the central control system, is particularly suitable for the condition that a deck needs to be prolonged when a large dock or a ship takes off and lands an airplane, can restore the deck to a normal state after operation, realizes the reduction of the projection area, avoids influencing the navigation safety and the speed due to wind resistance, and ensures that the large dock or the ship is safer.

When the ship is used, the positions of the bow and the stern of the ship body 1 are respectively provided with a deck extension device 2, a plurality of moving mechanisms 4, drag reduction mechanisms 8 and electric control jacks 22 are arranged at the positions of the bow and the stern under a moving deck 17 at equal intervals through load torsion calculation, and a plurality of positioning units 20 are arranged at two sides of a standby deck 15; the specific operation steps of the normal state of the deck of the ship or the dock, the elongation of the deck and the restoration of the deck to the normal state are as follows:

firstly, the deck is in a normal state;

1) as shown in fig. 13 and 14, the mobile deck 17 is matched with the hull deck 19, the central control system controls the locking unit 6 in the lower moving mechanism 4 of the mobile deck 17 to work through the PLC controller, the servo motor ii 41 rotates to drive the rotating wheel 40 to rotate, the rotating wheel 40 drives the connecting rod 34 to move upwards, so as to push the locking pin sleeve 37 to start to move upwards from the fixed sleeve 33, the outer circle of the locking pin sleeve 37 is matched with the locking hole 5 below the mobile deck 17, after the top 35 of the locking pin sleeve abuts against the pressure sensor arranged on the spring 7 at the bottom of the locking hole 5, a signal is transmitted back to the central control system, and the PLC controller of the central control system controls the servo motor ii 41 to stop working; when all the locking units 6 finish working, the signals are transmitted back to the central control system;

2) the central control system controls a servo motor III 24 of a positioning unit 20 in the standby deck 15 to rotate through a PLC (programmable logic controller), the servo motor III 24 controls a gear II 25 to be meshed with a rack II 23 of a positioning pin 14, the positioning pin 14 is contracted into a process hole, and a signal is transmitted back to the central control system after an inner end 21 of the positioning pin is detected by a pressure sensor at the bottom of the process hole; the central control system controls all the electric control jacks 22 in the lifting mechanism 11 to work through the PLC controller, so that the standby deck 15 is arranged in the lifting cabin;

3) the central control system controls a coil 32 and a guide magnet 27 of an electromagnetic suspension unit of a drag reduction mechanism 8 in a moving mechanism 4 under a moving deck 17 to be in a power off state through a PLC (programmable logic controller), the moving deck 17 is matched with a hull deck 19, a ship works in a deck state with a normal length, and the central control system stops a working program;

(II) deck extension;

as shown in fig. 15 and 16, when the ship takes off and lands the airplane, the central control system controls the deck extension devices 2 arranged at the bow and the stern to simultaneously operate and extend the decks and also to sequentially operate and extend the decks; the working process of the deck extension device 2 is as follows:

1) the central control system is started, the central control system controls a servo motor II 41 of a locking unit 6 in a moving mechanism 4 under a moving deck 17 through a PLC controller to enable a rotating wheel 40 to rotate, the rotating wheel 40 drives a connecting rod 34 to move downwards, the connecting rod 34 drives a locking pin sleeve 37 to start to move downwards along a locking hole 5 below the moving deck 17, when the top 35 of the locking pin sleeve moves downwards into a fixed sleeve 33, a position sensor 38 arranged in the fixed sleeve 33 works, a signal is transmitted back to the central control system, and the central control system controls the servo motor II 41 to stop working; when all the locking units 6 are completely operated, a signal is transmitted back to the central control system, and the central control system enters the next working procedure;

2) then, the central control system controls a servo motor I42 of a moving unit 9 in a moving mechanism 4 under the moving deck 17 through a PLC controller, a gear I44 is controlled to be meshed with a rack I10 through a reduction box 43, and the rack I10 drives the moving deck 17 to move outwards slowly;

meanwhile, the central control system controls a coil 32 and a guide magnet 27 of an electromagnetic suspension unit of a drag reduction mechanism 8 in a moving mechanism 4 under a moving deck 17 to be connected with a power supply through a PLC controller to generate magnetic force, a box body 28 generates a magnetic suspension effect under the action of a guide plate 30, a support plate 31 and the magnetic force, so that the box body 28 drives the moving deck 17 to move outwards to reduce resistance, at the moment, the moving deck 17 moves outwards to enable the bow and the stern to be separated from a spare deck 15 through a slide rail which is matched with a ship board through two C-shaped turned edges 3, when the guide plate 30 moves to the bottom surface of the box body 28 and is provided with a sensor 26, a signal is transmitted back to the central control system, and the power supply of the coil 32 and the guide magnet 27 is;

when all the mobile units 9 and the resistance reducing mechanisms 8 are finished, the signals are transmitted back to the central control system, and the central control system enters the next working procedure;

3) the central control system controls all the electric control jacks 22 in the lifting mechanism 11 to work through the PLC, so that the standby deck 15 is lifted slowly in the lifting cabin, when the standby deck is lifted to be as high as the mobile deck 17 and the ship body deck 19, the photoelectric sensor 13 works, a signal is transmitted back to the central control system, and the central control system controls all the electric control jacks 22 to stop working through the PLC; the central control system enters the next working procedure;

4) the central control system controls the positioning units 20 on two sides of the standby deck 15 to work through the PLC, a servo motor III 24 of the positioning unit 20 rotates, the servo motor III 24 controls a gear II 25 to be meshed with a rack II 23 of a positioning pin 14, so that the positioning unit 20 extends out to be matched with a positioning hole 18, the PLC controls the positioning pin 14 to be matched and positioned with the positioning hole 18 arranged on the movable deck 17 and the positioning hole 18 arranged on the hull deck 19 through the positioning pin taper 12, after the positioning pin 14 is detected by a pressure sensor at the bottom of the positioning hole 18, a signal is transmitted back to the central control system, and the central control system controls the servo motor III 24 to stop working through the PLC; after all the positioning units 20 are finished working, the signal is transmitted back to the central control system, and the central control system enters the next working procedure;

5) the central control system controls a servo motor II 41 of a locking unit 6 in a moving mechanism 4 under a moving deck 17 through a PLC controller to enable a rotating wheel 40 to rotate, the rotating wheel 40 drives a connecting rod 34 to move upwards, the connecting rod 34 pushes a locking pin sleeve 37 to start to move upwards from a fixed sleeve 33, the outer circle of the locking pin sleeve 37 is matched with a locking hole 5 under the moving deck 17, and after the locking pin sleeve abuts against a pressure sensor arranged on a spring 7 at the bottom of the locking hole 5, a signal is transmitted back to the central control system, and the central control system controls the servo motor II 41 to stop working through the PLC controller;

when all the locking units 6 are completely operated, a signal is transmitted back to the central control system, and the central control system enters the next working procedure;

6) at the moment, the movable deck 17 moves to extend the deck, and the central control system stops working procedures; and the airplane can be positioned on the extended deck by using the Beidou navigation system to land safely or operate.

(III) the length of the deck is recovered to a normal state;

the central control system enters the next working procedure as shown in fig. 15 and fig. 1; the central control system enters the next working procedure; as shown in fig. 13, after the ship finishes the operation of taking off and landing the airplane, the central control system controls the deck extension devices 2 arranged at the bow and the stern to enable the deck to return to a normal state; the working process of the deck extension device 2 when the deck extension device is recovered to the normal state is as follows:

1) the central control system controls the positioning units 20 on two sides of the standby deck 15 to work through the PLC, a servo motor III 24 of the positioning unit 20 rotates, the servo motor III 24 controls a gear II 25 to be meshed with a rack II 23 of a positioning pin 14, the positioning pin 14 retracts from a positioning hole 18, when the positioning pin 14 retracts into a process hole, a signal is transmitted back to the central control system after an inner end 21 of the positioning pin is detected by a pressure sensor at the bottom of the process hole, and the central control system controls the servo motor III 24 to stop working through the PLC; after all the positioning units 20 are finished working, the signal is transmitted back to the central control system, and the central control system enters the next working procedure;

2) the central control system controls all the electric control jacks 22 in the lifting mechanism 11 to work through the PLC, so that the standby deck 15 is slowly lowered in the lifting cabin, when the standby deck is lowered to the original position, the photoelectric sensor 13 works, a signal is transmitted back to the central control system, and the central control system controls all the electric control jacks 22 to stop working through the PLC; the central control system enters the next working procedure;

3) the central control system controls a servo motor II 41 of a locking unit 6 in a moving mechanism 4 under a moving deck 17 through a PLC controller to enable a rotating wheel 40 to rotate, the rotating wheel 40 drives a connecting rod 34 to move downwards, the connecting rod 34 drives a locking pin sleeve 37 to start to move downwards along a locking hole 5 below the moving deck 17, when the top 35 of the locking pin sleeve moves downwards into a fixed sleeve 33, a position sensor 38 arranged in the fixed sleeve 33 works, a signal is transmitted back to the central control system, and the central control system controls the servo motor II 41 to stop working; when all the locking units 6 are completely operated, a signal is transmitted back to the central control system, and the central control system enters the next working procedure;

4) then, the central control system controls a servo motor I42 of a mobile unit 9 in the lower mobile mechanism 4 of the mobile deck 17 to rotate through a PLC (programmable logic controller), a gear I44 is controlled to be meshed with a rack I10 through a reduction box 43, and the rack I10 drives the mobile deck 17 to slowly move towards the hull deck 19;

meanwhile, the central control system controls a coil 32 and a guide magnet 27 of an electromagnetic suspension unit of a drag reduction mechanism 8 in a moving mechanism 4 under a moving deck 17 to be connected with a power supply through a PLC controller to generate magnetic force, a box body 28 generates a magnetic suspension effect under the action of a guide plate 30 and a support plate 31 and the magnetic force, so that the box body 28 drives the moving deck 17 to move towards a hull deck 19 to reduce resistance, at the moment, the moving deck 17 moves towards the hull deck 19 through slide rails which are arranged on two sides of a C-shaped turned edge 3 in a matching way with the ship board, and after the moving deck 17 is contacted with the hull deck 19, a signal is transmitted back to the central control system, and the central control system enters the next working program;

5) the movable deck 17 is matched with the hull deck 19, the central control system controls a locking unit 6 in a movable mechanism 4 under the movable deck 17 to work through a PLC (programmable logic controller), a servo motor II 41 rotates to drive a rotating wheel 40 to rotate, the rotating wheel 40 drives a connecting rod 34 to move upwards, so that a locking pin sleeve 37 is pushed to start to move upwards from a fixed sleeve 33, the outer circle of the locking pin sleeve 37 is matched with a locking hole 5 below the movable deck 17, after a top 35 of the locking pin sleeve abuts against a pressure sensor arranged on a spring 7 at the bottom of the locking hole 5, a signal is transmitted back to the PLC of the central control system, and the PLC of the central control system controls the servo motor II 41 to stop working; when all the locking units 6 finish working, the signals are transmitted back to the central control system;

6) the central control system controls a coil 32 and a guide magnet 27 of an electromagnetic suspension unit of a drag reduction mechanism 8 in a moving mechanism 4 under a moving deck 17 to be in a power off state through a PLC (programmable logic controller), the moving deck 17 is matched with a hull deck 19, a ship works in a deck state with a normal length, and the central control system stops a working program;

7) when all the locking units 6 are finished, the signals are transmitted back to the central control system, and the central control system stops working; the mobile deck 17 is finished by returning to the normal state. As shown in fig. 13.