CN111559511B - Large ship or dock deck extension device and control method - Google Patents

Abstract

The invention relates to a deck extension device for a large vessel or a dock and a control method. A deck extension device is provided at the bow and stern position, and the deck extension device includes a central control system, a moving deck, a moving mechanism, a drag reduction mechanism, a lifting mechanism, and a backup mechanism. Deck; the mobile deck is close to the bow and stern, and the mobile mechanism and drag reduction mechanism are arranged at equal intervals. The spare deck and lifting mechanism are installed in the hull below the mobile deck. The spare deck is fixedly connected to the lifting mechanism. The resistance mechanism is fixedly installed at the bow and stern at equal intervals, and the mobile deck is matched and installed on the mobile mechanism and the drag reduction mechanism and moves along the bow and stern directions. The present invention is easy to maintain, inspect and repair, and is especially suitable for the situation where the deck needs to be extended for large ships or dock take-off and landing aircraft.

Description

A large vessel or dock deck extension device and control method

technical field

The invention relates to a large vessel or dock deck extension device and a control method, in particular to a large vessel or dock that requires deck length extension under specific circumstances, including a device for deck length extension and deck restoration to normal, and an intelligent and precise control method.

Background technique

In ocean-going ships, especially large ships sailing in deep blue, when air transportation of supplies requires take-off and landing aircraft or other special operations, the deck needs to reach a certain length to achieve the purpose; or, floating oil production, drilling equipment and large docks for mooring, When air transport supplies need to take off and land aircraft or other special operations, the deck needs to reach a certain length, and in the above situation, the deck needs to be extended to achieve the purpose of taking off and landing aircraft; in the existing technology, there is no similar technology; the present invention solves the above problems, extending the After the deck completes the take-off and landing of aircraft or other special tasks, restore the deck to normal to avoid affecting the safety of navigation and the speed of being affected by wind resistance.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a large vessel or dock deck extension device and control method in view of the problems existing in the above-mentioned prior art, which can quickly and reliably perform the deck extension action, and after completing the take-off and landing of aircraft or other special tasks, can Control deck returned to normal state. The unit is easy to maintain, inspect, service and drive.

The purpose of the present invention is to achieve this, a large vessel or dock deck extension device, a deck extension device is provided at the bow and stern position, and the deck extension device includes a central control system, a moving deck, a moving mechanism, a drag reduction mechanism, and a lifting mechanism. Mechanisms, spare decks; mobile decks close to the bow and stern with equidistant moving mechanisms and drag reduction mechanisms, and a spare deck and a lifting mechanism are installed in the hull below the mobile deck, and the spare deck is fixedly connected to the lifting mechanism to move The mechanism and the drag reduction mechanism are fixed and installed at the bow and stern at equal intervals, and the mobile deck is matched and installed on the mobile mechanism and the drag reduction mechanism and moves along the bow and stern directions.

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

The two sides of the moving deck along the moving direction are provided with "C"-shaped curling edges to match the side of the ship through the sliding rails, and a plurality of concave track grooves are arranged below along the moving direction. The holes match the positioning pins of the spare deck, and the number of positioning holes matches the number of positioning pins matched with the spare deck; the bottom of the positioning holes is provided with sensors, and a certain number of locking holes and the locking pins of the moving mechanism are arranged under the moving deck There is a spring in the middle of the bottom of the locking hole, and a pressure sensor is arranged in the middle of the spring. The number of the locking holes matches the number of locking units of the moving mechanism, and the distance between the locking holes in the moving direction is equal; the movement The length of the deck is greater than or equal to the length of the spare deck, and less than twice the length of the bow and stern;

The moving mechanism is composed of a moving unit and a locking unit; the moving unit is composed of a servo motor I, a reduction box, a gear I, and a rack I. The gear I controlled by the servo motor I matches the meshing rack I, and the rack I moves along the Direction installation, servo motor I is matched with gear I through the reduction box; the locking unit is composed of servo motor II, a rotating wheel, a connecting rod, a locking pin sleeve, a fixed sleeve, and a position sensor, and there are direct pin holes on both sides of the connecting rod. , The locking pin sleeve is in the shape of a piston with a small upper diameter and a large lower diameter, the upper part is provided with a direct pin hole perpendicular to the axis line, the inner cavity of the locking pin sleeve is provided with a cavity matching the connecting rod, and the locking pin sleeve The outer circle is matched with the locking hole provided under the moving deck. After one side of the connecting rod is matched with the cavity, it is hinged with the upper part of the locking pin sleeve with a direct pin hole perpendicular to the axis line, and the other side of the connecting rod is connected with the direct pin hole. The cylindrical boss on the edge of the rotating wheel is hinged, and it all passes through the bearing when hinged; the rotating wheel is semi-circular with a cylindrical boss on the edge, the center of the rotating wheel is connected with the servo motor II, the locking pin sleeve is placed vertically, and is centered by the fixed sleeve and positioning, the servo motor II controls the rotation of the rotating wheel to drive the connecting rod to move up and down to the lowest point when the top of the locking pin sleeve is lower than the fixed sleeve, and the upper port of the inner hole of the fixed sleeve is provided with a position sensor;

The drag reduction mechanism is composed of a certain number of electromagnetic levitation units, which are installed at equal distances from the moving units of the moving mechanism near the bow and stern of the ship; the electromagnetic levitation unit is a rectangular box, which consists of a box, a coil, a supporting magnet, It is composed of guide plate, guide magnet, support plate and sensor; the cross-section of the box is mouth-shaped, with a gap at the bottom. The box is installed and connected along the moving direction of the moving deck. The gap at the bottom of the box is installed with a support plate and fixed to the hull, and the upper part of the box is fixed. Install the coil, install support magnets on both sides of the coil, install a guide plate in the middle of the box, and install guide magnets on both sides of the box; sensors are installed on both sides of the box gap below the end of the guide plate, and the length of the guide plate matches the length of the spare deck;

The lifting mechanism is installed in the lift cabin of the hull below the mobile deck, an appropriate number of electric control jacks are installed at the bottom of the lift cabin, and a spare deck is installed on the electric control jacks;

The shape and size of the spare deck match the lift cabin, and both sides of the spare deck are provided with process holes for installation and positioning units, and both sides of the spare deck are provided with photoelectric sensors; the positioning units are the gear II and the positioning pin controlled by the servo motor III. The rack Ⅱ provided on the top is matched, the positioning pins are horizontally installed in the process holes on both sides of the spare deck, and the bottom of the process holes is provided with sensors. Rack II is provided; the positioning pins of the positioning unit on one side of the spare deck match the positioning holes provided on the mobile deck, and the positioning pins on the other side of the spare deck match the positioning holes provided on the hull deck;

The sensor and pressure sensor at the bottom of the positioning hole of the moving deck, the servo motor I of the moving unit in the moving mechanism, the servo motor II of the locking unit, the position sensor, the coil and guide of the electromagnetic suspension unit in the drag reduction mechanism Magnets, sensors, electric control jacks of the lifting mechanism, photoelectric sensors and sensors of the spare deck, they are connected to the PLC controller via the signal line, the Beidou navigation system provides ship positioning, and the PLC controller and the Beidou navigation system are composed of Central control system.

A method of using a deck extension device for large ships or docks. When the deck is in a normal state, the mobile deck is matched with the hull deck, the central control system controls the locking unit in the mobile mechanism under the mobile deck to work through a PLC controller, and the servo motor II rotates to drive The rotating wheel rotates, and the rotating wheel drives the connecting rod to move upward, thereby pushing the locking pin sleeve to move upward from the fixed sleeve. After the pressure sensor installed on the spring at the bottom of the hole, the central control system controls the servo motor II to stop working; after all the locking units are completed, the central control system controls the rotation of the servo motor III of the positioning unit in the spare deck through the PLC controller, and the servo motor III The control gear II meshes with the rack II of the positioning pin, so that the positioning pin shrinks into the process hole, and the inner end of the positioning pin is detected by the pressure sensor at the bottom of the process hole. The projected area of the deck in the normal state avoids affecting the navigation safety and wind resistance to affect the speed, making large docks or ships safer.

When the deck is required to be extended, the central control system controls the deck extension device at the bow and stern to extend the deck at the same time, or it can work to extend the deck successively. Start the central control system, the central control system controls the servo motor II of the locking unit in the moving mechanism under the mobile deck through the PLC controller to make the rotating wheel rotate, the rotating wheel drives the connecting rod to move down, and the connecting rod drives the locking pin sleeve to start moving along the The locking hole under the deck moves down, when the top of the locking pin sleeve moves down into the fixed sleeve, the position sensor set in the fixed sleeve works, and the central control system controls the servo motor II to stop working; when all the locking units After the work is completed, the central control system enters the next work procedure. Then the central control system controls the servo motor I of the moving unit in the moving mechanism under the moving deck through the PLC controller, and controls the gear I to mesh with the rack I through the reduction box, and the rack I drives the moving deck to move slowly outward. At the same time, the central control system controls the coil of the electromagnetic suspension unit of the drag reduction mechanism in the moving mechanism under the mobile deck through the PLC controller, and the guide magnet is connected to the power supply to generate a magnetic flux force, and the box generates a magnetic suspension under the action of the guide plate, the support plate and the magnetic flux force. Therefore, when the box drives the moving deck to move outward, the resistance is reduced, and the moving deck moves outward to free the bow and stern of the spare deck. The power to the guide magnet is disconnected. After all moving units and drag reduction mechanisms are completed, the central control system enters the next work procedure. The central control system controls the operation of all electric control jacks in the lifting mechanism through the PLC controller, so that the spare deck is slowly lifted in the lift cabin. The system controls all electric control jacks to stop working through the PLC controller; the central control system enters the next working procedure. The central control system controls the positioning units on both sides of the spare deck through the PLC controller. The servo motor III of the positioning unit rotates, and the servo motor III controls the gear II to mesh with the rack II of the positioning pin, so that the positioning unit is extended and matched with the positioning hole. The PLC controller controls the positioning pin to coordinate with the positioning hole provided on the mobile deck and the positioning hole provided on the hull deck through the positioning pin taper. When the positioning pin is detected by the pressure sensor at the bottom of the positioning hole, the central control system is controlled by PLC. The controller controls the servo motor III to stop working; after all the positioning units are completed, the central control system enters the next working procedure. The central control system controls the servo motor II of the locking unit in the moving mechanism under the mobile deck through the PLC controller to make the rotating wheel rotate, the rotating wheel drives the connecting rod to move upward, and the connecting rod pushes the locking pin sleeve to move upward from the fixed sleeve, locking The outer circle of the pin sleeve is matched with the locking hole under the moving deck, and after the pressure sensor provided by the spring at the bottom of the locking hole, the central control system controls the servo motor II to stop working through the PLC controller; after all the locking units are completed, The central control system enters the next working procedure. At this point, the moving deck is moved and the extended deck is completed, and the central control system stops the work procedure. The aircraft uses the Beidou navigation system to provide positioning on the extended deck for safe landing or other special operations.

When the deck length returns to the normal state, the central control system controls the reverse operation of the procedure of the deck extension operation steps, and the central control system controls the execution of the operation steps when the deck is in the normal state.

The present invention is a platform for taking off and landing aircraft by extending the deck when floating oil production, drilling equipment and large docks or large ships need to be transported by air or other special operations. The invention is easy to maintain, inspect and repair, and is especially suitable for the situation where the deck needs to be extended for large ships or dock take-off and landing aircraft, and can restore the deck to the normal state after the operation, reduce the projected area, avoid affecting the navigation safety and wind resistance affecting the speed, so that the Larger docks or boats are safer.

Through the present invention, the present invention relates to a deck extension device for ships or docks used in the ocean, especially for large ships or docks. Control Method. The device is easy to check and drive, especially when the long-distance operation vessel needs air transportation of supplies or other special operations, the extended deck forms a platform for take-off and landing aircraft, so that the operation is fast and stable, and the efficiency and power can be geometric. improve. Has great economic benefits.

Description of drawings

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

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

Figure 3 is a schematic front view of the moving deck in the deck extension device of the present invention.

Fig. 4 is a schematic diagram of the C-shaped hemming of the mobile deck of the present invention.

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

Figure 6 is a schematic structural diagram of the drag reduction mechanism in the deck extension device of the present invention.

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

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

FIG. 9 is a schematic front view of the state where the locking unit locks the deck in the moving mechanism of the present invention.

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

Figure 11 is a schematic front view of the positioning unit in the spare deck of the present invention.

Fig. 12 is a schematic top view of the positioning unit in the spare deck of the present invention.

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

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

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

Figure 16 is a schematic front view of the completed state of the deck extension of the present invention.

In the picture: 1 hull, 2 deck extension device, 3 "C" shaped beading, 4 moving mechanism, 5 locking hole, 6 locking unit, 7 spring, 8 drag reduction mechanism, 9 moving unit, 10 rack I, 11 Lifting Mechanism, 12 Positioning Pin Taper, 13 Photoelectric Sensor, 14 Positioning Pin, 15 Spare Deck, 16 Sensor, 17 Moving Deck, 18 Positioning Hole, 19 Hull Deck, 20 Positioning Unit, 21 Positioning Pin Inner End, 22 electric jack, 23 rack II, 24 servo motor III, 25 gear II, 26 sensor, 27 guide magnet, 28 box, 29 support magnet, 30 guide plate, 31 support plate, 32 coil, 33 fixed sleeve, 34 connection Rod, 35 Locking pin sleeve top, 36 Locking pin sleeve direct pin hole, 37 Locking pin sleeve, 38 Position sensor, 39 Cylindrical boss, 40 Turning wheel, 41 Servo motor II, 42 Servo motor I, 43 Gearbox , 44 gear I.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

As shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12; a large vessel or dock deck extension device, including Hull 1, hull deck 19, deck extension device 2 arranged at the bow and stern of hull 1, deck extension device 2 includes central control system, moving deck 17, moving mechanism 4, drag reduction mechanism 8, lifting mechanism 11, spare Deck 15; The mobile deck 17 is close to the bow and stern, and the mobile mechanism 4 and the drag reduction mechanism 8 are arranged at equal intervals. The spare deck 15 and the lifting mechanism 11 are installed in the hull 1 under the mobile deck 17. The spare deck 15 is fixedly connected to On the lifting mechanism 11, the moving mechanism 4 and the drag reducing mechanism 8 are fixedly installed at the bow and stern positions at equal intervals, and the moving deck 17 is matched and installed on the moving mechanism 4 and the drag reducing mechanism 8 and moves along the bow and stern directions; The spare deck 15 is provided with several positioning pins 14 ; the moving mechanism 4 is provided with several locking pin sleeves 37 and locking units 6 .

As shown in Figures 1 and 4, the moving deck 17 is provided with a "C"-shaped bead 3 on both sides along the moving direction, and the "C"-shaped bead 3 is matched with the side of the hull 1 through the sliding rail, and the A plurality of concave track grooves are provided below along the moving direction, and the moving deck 17 is provided with a number of positioning holes 18 on the end face of one side of the hull 1 to match the positioning pins 14 on the spare deck 15, and the number of positioning holes 18 is the same as that of the spare deck 15. The number of matching positioning pins 14 is matched; the bottom of the positioning hole 18 is provided with a sensor 16, and a number of locking holes 5 are arranged under the moving deck 17 to cooperate with the locking pin sleeve 37 on the moving mechanism 4, and the bottom of the locking hole 5 is There is a spring 7 in the middle, a pressure sensor is arranged in the middle of the spring 7, the number of locking holes 5 is greater than the number of locking units 6 on the moving mechanism 4, and the distance between the locking holes 5 in the moving direction is equal; the moving deck 17 The length is greater than or equal to the length of the spare deck 15, and less than twice the length of the bow and stern.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, the moving mechanism 4 consists 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 and a reduction box 43 , Gear I44, rack I10, the gear I44 controlled by the servo motor I42 matches the meshing rack I10, the rack I10 is installed along the moving direction of the moving deck 17, and the servo motor I42 is matched and connected to the gear I44 through the reduction box 43. As shown in Figure 9 and Figure 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 fixed sleeve 33, and a position sensor 38. There are direct pin holes on both sides of the connecting rod 34. The locking pin sleeve 37 is in the shape of a piston 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 direct pin hole 36 perpendicular to the axis line, and the inner cavity of the locking pin sleeve 37 is provided with a connecting In the cavity where the rod 34 is matched, the outer circle of the locking pin sleeve 37 is matched with the locking hole 5 provided under the moving deck 17; the edge of the rotating wheel 40 is provided with a cylindrical boss 39; one side of the connecting rod 34 is matched with the cavity , and the upper part of the locking pin sleeve 37 is provided with the locking pin sleeve direct pin hole 36 perpendicular to the axis line through the direct pin hinge, the other side of the connecting rod 34 is hinged with the cylindrical boss 39 on the edge of the rotating wheel 40, and both pass through the hinged connection. Bearing; 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 placed vertically, and is centered and positioned through the fixed sleeve 33, and the servo motor II 41 controls the rotating wheel 40 to rotate to drive the connecting rod 34 When moving up and down to the lowest point, the top end 35 of the locking pin sleeve is lower than the fixing sleeve 33 , and a position sensor 38 is provided on the upper port of the inner hole of the fixing sleeve 33 .

As shown in Fig. 1, Fig. 2, Fig. 6, the drag reduction mechanism 8 includes several electromagnetic levitation units, and the several electromagnetic levitation units and the moving unit 9 of the moving mechanism 4 are installed at equal intervals near the bow and stern of the ship; the electromagnetic levitation unit includes Box body 28, coil 32, support magnet 29, guide plate 30, guide magnet 27, support plate 31, sensor 26; box body 28 has a mouth-shaped cross section with a gap below, and box body 28 is installed and connected along the moving direction of the moving deck 17 , the support plate 31 is installed at the gap below the box body 28 to be fixed with the hull 1, the coil 32 is installed above the box body 28, the support magnets 29 are installed on both sides of the coil 32, the guide plate 30 is installed in the middle of the box body 28, and the guide magnets 27 are installed on both sides of the box body 28. There are sensors 26 on both sides of the box 28 below the end of the guide plate 30, and the length of the guide plate 30 matches the length of the spare deck 15.

As shown in FIGS. 1 , 2 and 7 , the lifting mechanism 11 is installed in the lift cabin of the hull 1 below the mobile deck 17 , a number of electric control jacks 22 are installed at the bottom of the lift cabin, and a spare deck 15 is installed on the electric control jack 22 ; The shape and size of the spare deck 15 are matched with the lift cabin, and both sides of the spare deck 15 are provided with process holes for installation and positioning units 20, and both sides of the spare deck 15 are provided with photoelectric sensors 13. The positioning unit 20 includes a servo motor III 24 , gear II 25, the positioning pin 14 is provided with a rack II 23, the servo motor III 24 is connected with the gear II 25, the gear II 25 is meshed with the rack II 23, the servo motor III 24, the gear II 25 and the positioning pin 14 The rack provided on Matching II23, the positioning pins 14 are installed horizontally in the process holes on both sides of the spare deck 15, and the bottom of the process holes is provided with sensors 16; There is a rack II23; the hull deck 19 is provided with a positioning hole 18, the positioning pin 14 of the positioning unit 20 on one side of the spare deck 15 is matched with the positioning hole 18 provided on the mobile deck 17, and the positioning pin 14 on the other side of the spare deck 15 matches with The locating holes 18 provided on the hull deck 19 are matched.

As shown in Figure 1, Figure 2 and Figure 3, the central control system is composed of a PLC controller and a Beidou navigation system, which provides ship positioning; the sensor 16 and the pressure sensor at the bottom of the positioning hole 18 on the mobile deck 17, so In the moving mechanism 4, the servo motor I 42 of the moving unit 9, 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, the photoelectric sensor 13 and the sensor 16 of the spare deck 15 are all connected to the PLC controller via signal lines.

Under the control operation of the central control system, the present invention is easy to maintain, inspect and repair, and is especially suitable for the situation where the deck needs to be extended for the take-off and landing of aircraft in large docks or ships. Navigational safety and wind resistance affect speed, making large docks or ships safer.

When in use, a deck extension device 2 is installed at the bow and stern positions of the hull 1. After the load torque calculation, several moving mechanisms 4, drag reduction mechanisms 8, and electric control are installed at equal intervals at the bow and stern positions under the moving deck 17. The jack 22 is provided with several positioning units 20 on both sides of the spare deck 15; the specific operation steps of the normal state of the ship or dock deck, the deck extension, and the return of the deck to the normal state are as follows:

(1) The normal state of the deck;

1) As shown in Figure 13 and Figure 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, and the rotation of the servo motor II41 drives the rotation The wheel 40 rotates, and the rotating wheel 40 drives the connecting rod 34 to move upward, thereby pushing the locking pin sleeve 37 to move upward from the fixed sleeve 33. The outer circle of the locking pin sleeve 37 cooperates with the locking hole 5 under the moving deck 17 to lock After the top 35 of the pin sleeve is pressed against the pressure sensor provided by the spring 7 at the bottom of the locking hole 5, the signal is sent back to the central control system, and the PLC controller of the central control system controls the servo motor II41 to stop working; when all the locking units 6 work completed After that, the signal is sent back to the central control system;

2) The central control system controls the rotation of the servo motor III 24 of the positioning unit 20 in the spare deck 15 through the PLC controller. The servo motor III 24 controls the gear II 25 to mesh with the rack II 23 of the positioning pin 14, so that the positioning pin 14 shrinks to the process hole Inside, after the inner end 21 of the positioning pin is detected by the pressure sensor at the bottom of the process hole, the signal is sent back to the central control system; in the lift cabin;

3) The central control system controls the coil 32 and the guide magnet 27 of the electromagnetic suspension unit of the drag reduction mechanism 8 in the moving mechanism 4 under the moving deck 17 through the PLC controller to be in a power-off state, the moving deck 17 matches the hull deck 19, and the ship Working under the normal length of the deck, the central control system stops the working procedure;

(2) Deck extension;

As shown in Figure 15 and Figure 16, when the ship is taking off and landing aircraft, the central control system controls the deck extension device 2 set at the bow and stern to work to extend the deck at the same time, or to extend the deck successively; the working process of the deck extension device 2 details as follows:

1) Start the central control system, the central control system controls the servo motor II 41 of the locking unit 6 in the lower moving mechanism 4 of the mobile deck 17 through the PLC controller to make the rotating wheel 40 rotate, and the rotating wheel 40 drives the connecting rod 34 to move down, connecting The rod 34 drives the locking pin sleeve 37 to start to move downward along the locking hole 5 under the moving deck 17. When the top 35 of the locking pin sleeve moves down into the fixed sleeve 33, the position sensor 38 set in the fixed sleeve 33 works , the signal is sent back to the central control system, and the central control system controls the servo motor II41 to stop working; when all the locking units 6 are completed, the signal is sent back to the central control system, and the central control system enters the next working procedure;

2) Then the central control system controls the servo motor I42 of the moving unit 9 in the moving mechanism 4 under the moving deck 17 through the PLC controller, and controls the gear I44 to mesh with the rack I10 through the reduction box 43, and the rack I10 drives the moving deck 17 outward slowly. move;

At the same time, the central control system controls the coil 32 of the electromagnetic suspension unit of the drag reduction mechanism 8 in the moving mechanism 4 under the moving deck 17 through the PLC controller, and the guide magnet 27 is connected to the power to generate magnetic flux. Under the action of the magnetic flux force, a magnetic suspension effect is produced, so that the box 28 reduces the resistance when the moving deck 17 moves outward. The outward movement makes the bow and stern vacate the distance of the spare deck 15. When the guide plate 30 moves to the bottom surface of the box 28 and the sensor 26 is installed, the signal is sent back to the central control system, and the central control system controls the coil 32 and the guide magnet 27 Power supply is disconnected;

When all the mobile units 9 and the drag reduction mechanism 8 are completed, the signal is sent back to the central control system, and the central control system enters the next work procedure;

3) 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 spare deck 15 is slowly lifted in the lift cabin. , the photoelectric sensor 13 works, the signal is sent back to the central control system, and the central control system controls all the electric control jacks 22 to stop working through the PLC controller; the central control system enters the next working procedure;

4) The central control system controls the positioning units 20 on both sides of the spare deck 15 to work through the PLC controller, the servo motor III24 of the positioning unit 20 rotates, and the servo motor III24 controls the gear II25 to mesh with the rack II23 of the positioning pin 14, so that the positioning unit 20 is extended to cooperate with the positioning hole 18, and the PLC controller controls the positioning pin 14 to cooperate with the positioning hole 18 provided on the moving deck 17 and the positioning hole 18 provided on the hull deck 19 through the positioning pin taper 12. When the positioning pin 14 After being detected by the pressure sensor at the bottom of the positioning hole 18, the signal is sent back to the central control system, and the central control system controls the servo motor III 24 to stop working through the PLC controller; when all the positioning units 20 are completed, the signal is sent back to the central control system. The control system enters the next working procedure;

5) The central control system controls the servo motor II 41 of the locking unit 6 in the lower moving mechanism 4 of the mobile deck 17 through the PLC controller to make the rotating wheel 40 rotate, the rotating wheel 40 drives the connecting rod 34 to move upward, and the connecting rod 34 pushes the locking pin The sleeve 37 starts to move upward from the fixed sleeve 33, the outer circle of the locking pin sleeve 37 is matched with the locking hole 5 under the moving deck 17, and after the pressure sensor provided on the spring 7 at the bottom of the locking hole 5, the signal is transmitted back to the central control System, the central control system controls the servo motor II41 to stop working through the PLC controller;

When all the locking units 6 are completed, the signal is sent back to the central control system, and the central control system enters the next work procedure;

6) At this time, the moving deck 17 is completed to move and extend the deck, and the central control system stops the working procedure; the aircraft uses the Beidou navigation system to provide positioning on the extended deck for safe landing or operation.

(3) The length of the deck is restored to its normal state;

As shown in Figure 15 and Figure 1, the central control system enters the next work procedure; the central control system enters the next work procedure; as shown in Figure 13, when the ship completes the take-off and landing operation, the central control system controls the deck extension devices set at the bow and stern 2 Restore the deck to normal state; Deck extension device 2 restores normal state The working process is as follows:

1) The central control system controls the positioning units 20 on both sides of the spare deck 15 to work through the PLC controller, the servo motor III24 of the positioning unit 20 rotates, and the servo motor III24 controls the gear II25 to mesh with the rack II23 of the positioning pin 14, so that the positioning pin The sub 14 is retracted from the positioning hole 18. When the positioning pin 14 is retracted into the process hole, the inner end 21 of the positioning pin is detected by the pressure sensor at the bottom of the process hole, and the signal is sent back to the central control system. The central control system passes the PLC controller. Control the servo motor III24 to stop working; when all the positioning units 20 are completed, the signal is sent 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 controller, so that the spare deck 15 is slowly lowered in the lift cabin. When lowered to the original position, the photoelectric sensor 13 works and the signal is transmitted. Back to the central control system, the central control system controls all the electric control jacks 22 to stop working through the PLC controller; the central control system enters the next working procedure;

3) The central control system controls the servo motor II 41 of the locking unit 6 in the lower moving mechanism 4 of the mobile deck 17 through the PLC controller to make the rotating wheel 40 rotate, the rotating wheel 40 drives the connecting rod 34 to move downward, and the connecting rod 34 drives the locking The pin sleeve 37 starts to move down along the locking hole 5 under the moving deck 17. When the top 35 of the locking pin sleeve moves down into the fixed sleeve 33, the position sensor 38 set in the fixed sleeve 33 works, and the signal is transmitted back to the middle. The central control system controls the servo motor II41 to stop working; when all the locking units 6 are completed, the signal is sent back to the central control system, and the central control system enters the next working procedure;

4) Then the central control system controls the rotation of the servo motor I42 of the moving unit 9 in the moving mechanism 4 under the moving deck 17 through the PLC controller, and controls the gear I44 through the gear box 43 to mesh with the rack I10, and the rack I10 drives the moving deck 17 to the hull. Deck 19 moves slowly;

At the same time, the central control system controls the coil 32 of the electromagnetic suspension unit of the drag reduction mechanism 8 in the moving mechanism 4 under the moving deck 17 through the PLC controller, and the guide magnet 27 is connected to the power to generate magnetic flux. Under the action of the magnetic flux force, a magnetic suspension effect is generated, so that the box 28 reduces the resistance when the mobile deck 17 moves to the hull deck 19. At this time, the mobile deck 17 is matched with the slide rail installed on the side of the ship through the "C"-shaped curling edges 3 on both sides. , move closer to the hull deck 19, when the moving deck 17 contacts the hull deck 19, the signal is transmitted back to the central control system, and the central control system enters the next working procedure;

5) The moving deck 17 is matched with the hull deck 19. The central control system controls the locking unit 6 in the moving mechanism 4 under the moving deck 17 to work through the PLC controller. The rotation of the servo motor II 41 drives the rotating wheel 40 to rotate, and the rotating wheel 40 drives the connecting The rod 34 moves upward, thereby pushing the locking pin sleeve 37 to move upward from the fixed sleeve 33, the outer circle of the locking pin sleeve 37 is matched with the locking hole 5 under the moving deck 17, and the top 35 of the locking pin sleeve is against the locking hole 5 After the pressure sensor provided on the bottom spring 7, the signal is sent back to the PLC controller of the central control system, and the PLC controller of the central control system controls the servo motor II41 to stop working; when all the locking units 6 are completed, the signal is sent back central control system;

6) The central control system controls the coil 32 and the guide magnet 27 of the electromagnetic suspension unit of the drag reduction mechanism 8 in the moving mechanism 4 under the moving deck 17 through the PLC controller to be in a power-off state, and the moving deck 17 matches the hull deck 19. Working under the normal length of the deck, the central control system stops the working procedure;

7) When all the locking units 6 are completed, the signal is sent back to the central control system, and the central control system stops working; the moving deck 17 is restored to its normal state. As shown in Figure 13.

Claims (3)

1. The utility model provides a large ship or dock deck extension fixture, includes hull (1), hull deck (19), sets up in deck extension fixture (2) of bow, the 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 curled edges (3), the C-shaped curled edges (3) are matched with the ship board of the ship body (1) through slide rails, a plurality of concave track grooves are arranged below the movable deck (17) along the moving direction, the end face 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 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 sensor (16) is arranged at the bottom of the positioning hole (18), a plurality of locking holes (5) are formed 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 top (35) of the locking pin sleeve to be lower than the fixed sleeve (33) when the connecting rod (34) is driven to move up and down to the lowest point, 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 process holes in 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; inductor (16), pressure sensor at the bottom of removal deck (17) locating hole (18), servo motor I (42) of mobile unit (9) in moving mechanism (4), 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, a 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 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) are finished, 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 be powered off;

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) are finished, 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.

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