Marine hydraulic weather-tight single-open type ROV (Remote Operated Vehicle) side door

Abstract

The utility model belongs to the technical field of ship side doors, and relates to a ship hydraulic weather-tight single-open type ROV side door which comprises a door frame, a door leaf is rotationally connected with the door frame through a plurality of sets of hinges, a pressing plate is arranged on the sealing face of the door frame, a sealing rubber strip is arranged on the sealing face of the door leaf, and when the door leaf is closed relative to the door frame, the sealing rubber strip is pressed on the pressing plate. The weather tightness is realized; a locking oil cylinder is installed on the door leaf, and when the door leaf is closed on the door frame, the locking oil cylinder drives the locking bolt to move so as to be matched with a bolt groove in the door frame, and locking or unlocking is achieved. The door leaf is opened and closed relative to the door frame through a planar four-bar door opening mechanism, one end of the planar four-bar door opening mechanism is connected with the door leaf, and the other end of the planar four-bar door opening mechanism is connected with the door frame. The ROV gangway meets the requirement that a ship enters and exits a cabin through ROV retracting and releasing operation under the 6-level severe sea condition, electric hydraulic control is adopted, the mechanical and electrical integration degree is high, safety performance is good, the weather tight requirement is met, and the flushing test reaches 0.2 MPa.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship gangway doors and relates to a ship hydraulic weathertight single-opening ROV gangway door. Background Art

[0002] With the development of drilling and production operations and scientific research vessels, customers have increasingly demanded higher standards for ship outfitting equipment. Conventional hydraulic weathertight gangway doors primarily consist of a door frame, door leaves, a switch cylinder, a hinge assembly, and a locking mechanism. These hydraulic weathertight gangway doors are small in size, have a narrow opening angle, and are relatively weak. They lack a mechanical locking mechanism after opening and an electrical interlocking function with the ROV frame. These doors are unable to meet the requirements for ROV access and deployment in severe sea conditions, such as Class 6. Summary of the Invention

[0003] In response to the above problems, the utility model provides a marine hydraulic weathertight single-opening ROV gangway door. The ROV gangway door meets the requirements of entering and exiting the cabin during ROV deployment and retraction operations on board ships under level 6 severe sea conditions. It adopts electric hydraulic control, has a high degree of electromechanical and hydraulic integration, and has good safety performance. It meets the weathertightness requirements and the flushing test reaches 0.2MPa.

[0004] According to the technical solution of the utility model: a marine hydraulic weathertight single-opening ROV gangway door, comprising a door frame, a door leaf rotatably connected to the door frame via a plurality of hinges, characterized in that a pressing plate is provided on the sealing surface of the door frame, and a sealing strip is provided on the sealing surface of the door leaf. When the door leaf is closed relative to the door frame, the sealing strip is pressed against the pressing plate to achieve weathertightness;

[0005] A locking cylinder is installed on the door leaf. When the door leaf is closed to the door frame, the locking cylinder drives the locking pin to move to cooperate with the pin slot on the door frame to achieve locking or unlocking.

[0006] The door leaf is opened and closed relative to the door frame by a flat four-bar door opening mechanism. One end of the flat four-bar door opening mechanism is connected to the door leaf, and the other end is connected to the door frame. The flat four-bar door opening mechanism is driven by a switch cylinder, and the door leaf can achieve a 180° opening and closing action.

[0007] As a further improvement of the present invention, multiple groups of locking cylinders are installed on the edge of the door leaf, each group of locking cylinders is respectively equipped with a locking pin, and each locking pin is matched with a corresponding pin slot on the door frame.

[0008] As a further improvement of the present invention, a first limit switch is respectively installed on the door leaf corresponding to each locking cylinder. When the locking cylinder drives the locking pin to move, it can cooperate with the first limit switch to realize electrical induction locking or unlocking; a second limit switch is also installed on the door leaf. After the door leaf is closed in place, the second limit switch is triggered to realize electrical induction door opening or door closing.

[0009] As a further improvement of the present invention, the edge of the sealing surface of the door leaf is structured with a mounting groove, and the sealing strip is cooperatively arranged in the mounting groove;

[0010] When the door leaf and the door frame are closed, the pressing plate and the outer groove body of the installation groove are staggered, and the outer end of the pressing plate rests on the sealing strip.

[0011] As a further improvement of the present invention, multiple sets of planar four-bar door opening mechanisms are arranged between the door leaf and the door frame to achieve smooth opening and closing of the door leaf.

[0012] As a further improvement of the present invention, the planar four-bar door opening mechanism includes a first bar, a second bar, a third bar, and a fourth bar, wherein the first bar is integrally connected to the door leaf, the fourth bar is integrally connected to the door frame, one end of the second bar is rotatably connected to the first bar, one end of the third bar is rotatably connected to the fourth bar, and the other end of the second bar is rotatably connected to the third bar;

[0013] The rotation connection point between the second rod and the third rod is rotationally connected to the piston rod end of the switch oil cylinder.

[0014] As a further improvement of the present invention, the third rod is L-shaped.

[0015] As a further improvement of the present invention, the switch oil cylinder is installed on the inner wall of the ROV warehouse through the oil cylinder rear seat.

[0016] As a further improvement of the present invention, a door latch seat is installed on the outer plate of the ship. When the door leaf is opened to 180°, the locking cylinder drives the locking latch to cooperate with the door latch seat, and a polyurethane plate is provided on the door latch seat to prevent the door leaf from directly colliding with the door latch seat when the door is opened into place, thereby playing a buffering role.

[0017] As a further improvement of the present invention, a detachable safety guardrail is provided at the lower portion of the door frame, and a chain is tensioned on the detachable safety guardrail.

[0018] The technical effects of the utility model are: the utility model has an ingenious structural design, high structural strength, compactness and rationality, and a high degree of mechatronics; the flat four-bar door opening mechanism, locking latch device, hinge, etc. of the utility model are easy to repair and maintain; and the hydraulic weathertight single-opening ROV porthole with a flushing test pressure reaching 0.2 MPa is a marine hydraulic weathertight single-opening ROV porthole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the door leaf of the present invention when it is closed.

[0020] Figure 2 for Figure 1 Left view of .

[0021] Figure 3 for Figure 1 Top view of .

[0022] Figure 4 This is a schematic diagram of the structure of the sealing strip and locking pin when the door leaf is closed.

[0023] Figure 5 This is a schematic diagram of the structure of the door leaf when it is opened in the present invention.

[0024] Figure 6 This is a top view of the door leaf of the present invention when it is opened.

[0025] Figure 7 It is a structural diagram of the door latch seat.

[0026] Figure 8 This is a structural diagram of the ROV when the door leaf is open.

[0027] Figure 9 This is the electrical schematic diagram of the utility model. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts should fall within the scope of protection of the present invention.

[0030] Figure 1-9 The present invention comprises a door leaf 1, a door frame 2, a hinge 3, a sealing strip 4, a locking latch 5, a planar four-bar door opening mechanism 6, a first rod 6-1, a second rod 6-2, a third rod 6-3, a fourth rod 6-4, a locking cylinder 7, a switch cylinder 8, a cylinder rear seat 9, a door opening latch seat 10, a pressing plate 11, a balancing valve 12, a first limit switch 13, a second limit switch 14, etc.

[0031] like Figure 1-9As shown, the present invention is a hydraulic, weathertight, single-opening ROV gangway door for ships, comprising a door frame 2, a door leaf 1 rotatably connected to the door frame 2 via multiple sets of hinges 3, a compression plate 11 provided on the sealing surface of the door frame 2, and a sealing strip 4 provided on the sealing surface of the door leaf 1. When the door leaf 1 is closed relative to the door frame 2, the sealing strip 4 presses against the compression plate 11 to achieve weathertightness. The door leaf 1 is a single-door structure.

[0032] A locking cylinder 7 is installed on the door leaf 1. When the door leaf 1 is closed on the door frame 2, the locking cylinder 7 drives the locking latch 5 to move to cooperate with the latch groove on the door frame 2 to achieve locking or unlocking.

[0033] The door leaf 1 is opened and closed relative to the door frame 2 by a planar four-bar door opening mechanism 6. One end of the planar four-bar door opening mechanism 6 is connected to the door leaf 1, and the other end is connected to the door frame 2. The planar four-bar door opening mechanism 6 is driven by a switch cylinder 8, and the door leaf 1 can achieve a 180° opening and closing action.

[0034] As you can understand, a latch holder 10 is installed on the ship's outer plate. When the door leaf 1 is opened to 180 degrees, the locking cylinder 7 drives the locking latch 5 to engage the latch holder 10. A polyurethane plate is also installed on the latch holder 10 to prevent direct impact between the door leaf 1 and the latch holder 10 when the door is fully opened, thus providing a buffering effect. This ensures that the door leaf 1 does not shake in severe sea conditions of level 6, and prevents sudden decompression in the cylinder, which could cause the door leaf to lose control and cause danger.

[0035] A plurality of locking cylinders 7 are installed on the edge of the door leaf 1 , and each locking cylinder 7 is respectively provided with a locking latch 5 , and each locking latch 5 is matched with a corresponding latch slot on the door frame 2 .

[0036] A first limit switch 13 is installed on the door leaf 1 corresponding to each locking cylinder 7. When the locking cylinder 7 drives the locking pin 5 to move, it can cooperate with the first limit switch 13 to achieve electrical induction locking or unlocking; a second limit switch 14 is also installed on the door leaf 1. After the door leaf 1 is closed, the second limit switch 14 is triggered to achieve electrical induction door opening or door closing.

[0037] The edge of the sealing surface of the door leaf 1 is constructed with a mounting groove, and the sealing strip 4 is arranged in the mounting groove; when the door leaf 1 and the door frame 2 are closed, the clamping plate 11 and the outer groove body of the mounting groove are staggered, and the outer end of the clamping plate 11 rests on the sealing strip 4.

[0038] A plurality of planar four-bar door opening mechanisms 6 are provided between the door leaf 1 and the door frame 2 to achieve a smooth opening and closing action of the door leaf 1 .

[0039] The planar four-bar door opening mechanism 6 includes a first bar 6-1, a second bar 6-2, a third bar 6-3, and a fourth bar 6-4, wherein the first bar 6-1 is integrally connected to the door leaf 1, the fourth bar 6-4 is integrally connected to the door frame 2, one end of the second bar 6-2 is rotatably connected to the first bar 6-1, one end of the third bar 6-3 is rotatably connected to the fourth bar 6-4, and the other end of the second bar 6-2 is rotatably connected to the third bar 6-3.

[0040] The rotation connection point between the second rod 6 - 2 and the third rod 6 - 3 is rotationally connected to the piston rod end of the switch cylinder 8 .

[0041] It is understandable that in order to enable the planar four-bar door opening mechanism 6 to accurately and reliably open and close the door leaf 1, the third bar 6-3 is L-shaped.

[0042] The switch cylinder 8 is installed on the inner wall of the ROV warehouse through the cylinder rear seat 9. Furthermore, a balancing valve 12 is added to the switch cylinder 8, which can automatically lock the switch cylinder after the door leaf is opened or closed. In severe sea conditions of level 6, it ensures that the door leaf will not shake and prevents sudden pressure release of the cylinder from causing the door leaf to lose control and cause danger.

[0043] A detachable safety guardrail is provided at the lower part of the door frame 2, and a chain is tensioned on the detachable safety guardrail to prevent the operator from falling due to mistakes, thereby improving the safety of the ROV porthole.

[0044] The working process of this utility model:

[0045] 1. Door opening process:

[0046] 1.1. Under the thrust of locking cylinder 7, locking latch 5 unlocks door leaf 1 (ROV porthole) from door frame 2. Once fully unlocked, it triggers first limit switch 13 on door leaf 1 to sense unlocking.

[0047] 1.2. Under the thrust of opening and closing cylinder 8, door leaf 1 opens via the flat four-bar door opening mechanism 6 and hinge 3. When the door leaf 1 reaches its fully opened angle of 180°, the second limit switch 14 on door leaf 1 is triggered, inducing an opening. Upon receiving the fully opened signal from door leaf 1, the PLC in the ROV porthole control box instructs the ROV porthole electric pump station to stop the operation of opening and closing cylinder 8. The opening and closing cylinder 8 is then locked by the counterbalance valve 12.

[0048] 1.3. Under the pulling force of the locking cylinder 7, the locking latch 5 locks the door leaf 1 and the door latch seat 10, locking it in place and triggering the first limit switch 13 on the door leaf 1 to sense the lock;

[0049] Opening completed.

[0050] 2. Closing process:

[0051] 2.1. Under the action of the thrust of the locking cylinder 7, the locking latch 5 unlocks the door leaf 1 and the door latch seat 10, and the unlocking is in place and the first limit switch 13 on the door leaf 1 is triggered to sense the unlocking;

[0052] 2.2. Under the pulling force of opening and closing cylinder 8, door leaf 1 closes via the planar four-bar door opening mechanism 6 and hinge 3. Once fully closed, it triggers the second limit switch 14 on door leaf 1 to sense closure. Upon receiving the fully closed signal, the PLC in the ROV's porthole control box instructs the ROV's porthole electric pump station to stop the operation of opening and closing cylinder 8. The opening and closing cylinder 8 is then locked by the counterbalance valve 12.

[0053] 2.3. Under the action of the tension of the locking cylinder 7, the locking pin 5 locks the door leaf 1 and the door frame 2. When locked in place, the first limit switch 13 on the door leaf 1 is triggered to sense the locking.

[0054] like Figure 9 As shown, when the door leaf 1 is open, the PLC of the ROV frame control box receives the signal from the ROV and issues a command to drive the ROV frame cylinder through the ROV frame electric pump station, driving the ROV frame to rotate outward from the door frame 2. When the ROV frame rotates outward to the right position, the winch installed on the ROV frame releases the ROV.

[0055] The ROV door and ROV frame are electrically interlocked via the PLC and limit switches in the corresponding control box. The interlock relationship is as follows: the ROV frame can only be operated after the ROV door is opened and locked; and the ROV door can only be operated after the ROV frame is retracted. This electrical interlock ensures that the ROV door and ROV frame do not interfere with each other, preventing damage to the equipment.

[0056] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to examples, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A hydraulic, weathertight, single-opening ROV gangway door for ships, comprising a door frame (2), a door leaf (1) rotatably connected to the door frame (2) via a plurality of hinges (3), and characterized in that: A pressing plate (11) is provided on the sealing surface of the door frame (2), and a sealing strip (4) is provided on the sealing surface of the door leaf (1). When the door leaf (1) is closed relative to the door frame (2), the sealing strip (4) is pressed against the pressing plate (11) to achieve wind and rain tightness. A locking oil cylinder (7) is installed on the door leaf (1). When the door leaf (1) is closed on the door frame (2), the locking oil cylinder (7) drives the locking latch (5) to move so as to cooperate with the latch groove on the door frame (2) to achieve locking or unlocking. The door leaf (1) is opened and closed relative to the door frame (2) by a planar four-bar door opening mechanism (6). One end of the planar four-bar door opening mechanism (6) is connected to the door leaf (1), and the other end is connected to the door frame (2). The planar four-bar door opening mechanism (6) is driven by a switch oil cylinder (8), and the door leaf (1) can achieve a 180° opening and closing action.

2. The marine hydraulic weathertight single-opening ROV gangway door according to claim 1, characterized in that: A plurality of locking cylinders (7) are installed on the edge of the door leaf (1), and each locking cylinder (7) is provided with a locking latch (5), and each locking latch (5) is matched with a corresponding latch slot on the door frame (2).

3. The marine hydraulic weathertight single-opening ROV porthole according to claim 1 or 2, characterized in that: A first limit switch (13) is installed on each locking cylinder (7) on the door leaf (1), and when the locking cylinder (7) drives the locking pin (5) to move, it can cooperate with the first limit switch (13) to achieve electrical induction locking or unlocking; A second limit switch (14) is also installed on the door leaf (1). After the door leaf (1) is closed, the second limit switch (14) is triggered to realize electrical induction door opening or door closing.

4. The marine hydraulic weathertight single-opening ROV porthole according to claim 1, characterized in that: The edge of the sealing surface of the door leaf (1) is formed into a mounting groove, and the sealing strip (4) is cooperatively arranged in the mounting groove; When the door leaf (1) and the door frame (2) are closed, the pressing plate (11) and the outer groove body of the installation groove are staggered, and the outer end of the pressing plate (11) abuts against the sealing strip (4).

5. The marine hydraulic weathertight single-opening ROV gangway door according to claim 1, characterized in that: A plurality of sets of planar four-bar door opening mechanisms (6) are arranged between the door leaf (1) and the door frame (2) to achieve a smooth opening and closing action of the door leaf (1).

6. The marine hydraulic weathertight single-opening ROV porthole according to claim 1 or 5, characterized in that: The planar four-bar door opening mechanism (6) comprises a first bar (6-1), a second bar (6-2), a third bar (6-3), and a fourth bar (6-4), wherein the first bar (6-1) is integrally connected to the door leaf (1), the fourth bar (6-4) is integrally connected to the door frame (2), one end of the second bar (6-2) is rotatably connected to the first bar (6-1), one end of the third bar (6-3) is rotatably connected to the fourth bar (6-4), and the other end of the second bar (6-2) is rotatably connected to the third bar (6-3); The rotation connection point between the second rod (6-2) and the third rod (6-3) is rotationally connected to the piston rod end of the switch oil cylinder (8).

7. The marine hydraulic weathertight single-opening ROV gangway door according to claim 6, characterized in that: The third rod (6-3) is L-shaped.

8. The marine hydraulic weathertight single-opening ROV porthole according to claim 1, characterized in that: A balancing valve (12) is provided on the switch oil cylinder (8), and the balancing valve (12) can automatically lock the switch oil cylinder (8).

9. The marine hydraulic weathertight single-opening ROV gangway door according to claim 1, characterized in that: A door latch seat (10) is installed on the outer plate of the ship. When the door leaf (1) is opened to 180 degrees, the locking cylinder (7) drives the locking latch (5) to cooperate with the door latch seat (10). A polyurethane plate is provided on the door latch seat (10) to prevent the door leaf (1) from directly colliding with the door latch seat (10) when the door is opened to the right position, thereby playing a buffering role.

10. The marine hydraulic weathertight single-opening ROV porthole according to claim 1, characterized in that: A detachable safety guardrail is provided at the lower part of the door frame (2), and a chain is tensioned on the detachable safety guardrail.

Images