Methanol dual-fuel marine anti-pirate quick blocking device for outer stairway of residential area

Abstract

The invention discloses a methanol dual-fuel marine anti-pirate quick blocking device for an outer stairway of a residential area, and belongs to the technical field of marine devices. Through the hinged design of the grating structure, the stairway edge and the stairway side edge, the quick release structure is combined to achieve quick overturning of the grating, linkage of the buckle structure and the unlocking structure is matched, the requirements for personnel passing and escape and fire fighting access functions required by SOLAS specifications can be met in the daily state, high-strength blocking of the stairway can be achieved through quick operation when attacks happen, and the safety of the stairway is improved. Pirates are effectively prevented from invading; the grid structure adopts the design of the steel grid and the reinforcing ribs, the protection strength is guaranteed, the locking reliability and the operation convenience are both considered through the unlocking mechanism that the buckle driven by the spring and the connecting rod are in linkage, and the whole structure meets the protection requirements of daily passing convenience, international safety specification conformity and pirate prevention rapid blocking.

Description

TECHNICAL FIELD

[0001] The application relates to a methanol dual-fuel ship living area outdoor stairway anti-pirate rapid blocking device, and belongs to the technical field of ship devices. BACKGROUND

[0002] According to the Global Piracy Report of the International Maritime Organization (IMO), pirates prefer to move to the bridge or high-level living area through the outdoor stairway between the main deck and the upper deck after boarding the ship. When a long-distance ship is attacked by pirates, the outdoor stairway on the living area side (such as the open stairway between the main deck and the upper deck) is a weak link through which pirates can quickly invade the high-level living area of the crew.

[0003] The traditional protection scheme is as follows:

[0004] Fixed metal fence: usually arranged at the edge of the cargo deck and other non-escape areas, used for isolating dangerous equipment or preventing personnel from falling. If it is installed at the stairway, it will directly violate the SOLAS Convention, and cannot be quickly removed. Ship safety regulations require: for example, the SOLAS Convention stipulates that the stairway must be kept normal and unobstructed, and it is prohibited to set up fixed obstacles that cannot be removed (II-2 / 13.3.2); the China Classification Society (CCS) requires that the protection device should not hinder the passage of firefighters (Article 4, Chapter 8 of the Steel Sea Ship Classification Regulations).

[0005] Removable baffle: some ships temporarily install a baffle when passing through high-risk sea areas, which needs to be manually carried and installed, and the time consumption is greater than or equal to 30 seconds (which cannot meet the emergency response requirement). The response relies on manpower, and the baffle structure is not strong enough (easy to be broken by an axe).

[0006] Electronic access control system: such as CN201880001234.5 "ship intelligent access control system" (based on power-driven locking). However, the risk of power failure is high, and pirates can bypass the protection by damaging the circuit or lock core.

[0007] In summary, in the prior art, if the fixed fence completely blocks the stairway, it will violate the requirement of the SOLAS Convention on the unobstructedness of the escape passage, and there is a contradiction between safety and compliance. The removable baffle relies on manual response, and the efficiency is low and cannot resist violent damage. In addition, the existing electronic access control system relies on power, which is easy to be damaged or fail due to power failure, resulting in insufficient protection efficiency. SUMMARY

[0008] To solve the problems in the prior art, the application provides a methanol dual-fuel ship living area outdoor stairway anti-pirate rapid blocking device, which meets the international safety regulations (SOLAS escape / firefighting requirements), can quickly block the invasion of pirates through the stairway, and meets the daily convenience and high-strength protection requirements.

[0009] The technical scheme adopted by the present application is as follows: a methanol dual-fuel pirate-preventing quick blocking device for a residential area external stairway of a ship, a stairway edge and a stairway side edge are connected, and a stairway opening is arranged on the stairway edge; the device comprises a grating structure, a quick release structure, a buckle structure and an unlocking structure;

[0010] The grating structure is hinged to the connection between the stairway edge and the stairway side edge through a hinge piece, so as to realize the overturning of the grating structure between the stairway edge and the stairway side edge; the grating structure is provided with a steel grating in a grating frame, and a grating top frame of the grating frame is a hollow structure.

[0011] The quick release structure comprises a side edge fixed pin barrel fixed on the stairway side edge and a grating pin barrel fixed on the grating frame; when a quick release pin is inserted into the side edge fixed pin barrel and the grating pin barrel, the grating structure is fixed on the stairway side edge; when the quick release pin is pulled out, the grating structure is separated from the stairway side edge.

[0012] The buckle structure is arranged on the grating top frame, and the buckle structure is matched with a clamping groove of the grating side edge; the grating side edge is arranged on the stairway edge, the buckle structure is inserted into the clamping groove, and the grating structure is locked on the stairway opening; a latch bolt in the buckle structure is arranged on the grating top frame through a spring; the latch bolt, a connecting rod, a T-shaped clamping block and a locking block act in sequence; the connecting rod is arranged in a latch bolt groove of the latch bolt, and a clamping block rod is inserted into a connecting rod hole; the T-shaped clamping block acts in the locking block; when the connecting rod moves along the length direction of the latch bolt groove, the T-shaped clamping block is changed between a first clamping opening and a second clamping opening in the locking block.

[0013] The unlocking structure comprises a section of the connecting rod connected to the connecting rod through a pull rod, and the other end of the connecting rod is connected to an end of the grating top frame through a connecting rod return spring.

[0014] Further, a reinforcing rib is arranged in the grating frame of the grating structure.

[0015] Further, the connecting rod is arranged in the latch bolt groove of the plurality of latch bolts.

[0016] Further, the pull rod is pulled to drive the connecting rod to move in the latch bolt groove, the T-shaped clamping block moves in the locking block along the clamping opening slope, the latch bolt is compressed, and the latch bolt is retracted into the grating top frame.

[0017] Compared with the prior art, the present application has the following advantages: through the hinged design of the grid structure and the ladder edge and side edge, combined with the quick release structure to realize the quick turnover of the grid, and the linkage of the buckle structure and the unlocking structure, both the personnel passing and the escape and fire passage function required by SOLAS standard can be met in the daily state, and the high-strength blocking of the ladder can be realized through quick operation when attacked, so that the pirate intrusion is effectively prevented; the grid structure is designed with steel grid and reinforcing rib, so that the protection strength is ensured, and the unlocking mechanism of the spring-driven buckle and the connecting rod linkage considers both the reliability of locking and the convenience of operation, and the overall structure considers both the convenience of daily passing and the compliance with international safety standards and the protection requirements of pirate rapid blocking. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a structural schematic view of the blocking device (daily state).

[0020] Figure 2 is a structural schematic view of the blocking device (locked state).

[0021] Figure 3 is a structural schematic view of the unlocking structure.

[0022] Figure 4 is an exploded view of the buckle structure.

[0023] Figure 5 is a schematic view of the buckle structure.

[0024] In the drawings: 1, ladder edge, 2, ladder side edge, 3, ladder opening, 4, grid side edge, 5, buckle groove, 6, hinge, 7, grid frame, 8, steel grid, 9, reinforcing rib, 10, grid top frame, 11, connecting rod return spring, 12, side edge fixing pin barrel, 13, grid pin barrel, 14, quick release pin, 15, connecting rope, 16, bolt, 17, spring, 18, bolt slot, 19, connecting rod hole, 20, T-shaped buckle block, 21, buckle block insertion rod, 22, locking block, 23, pull rod. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting on the application or its applications or uses. Based upon a review of the embodiments contained herein, those of ordinary skill in the art can make other embodiments that are within the scope of the application without undue experimentation. All of these embodiments are within the scope of the application.

[0027] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0028] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless otherwise specifically stated. It should be apparent that the dimensions of the various parts shown in the drawings are not to scale and are only meant to illustrate the general principles of the application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail but should be considered as part of the description of the application. In all examples shown and discussed herein, any specific value should be interpreted as illustrative only and not as a limitation. Thus, other examples of example embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0029] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0030] For the purposes of this description, spatially relative terms, such as "above", "below", "up", "down", "between", "within", "left", "right", "front", "back", "upper", "lower", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", "side", "end", etc., can be used herein for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", etc. do not necessarily denote any ordinal, chronological or other sequence unless specified.

[0031] In addition, it should be noted that the use of "first", "second", etc. words to define parts, only for the convenience of the corresponding parts, as there is no declaration, the above words have no special meaning, therefore can not be understood as limiting the scope of protection of the present application.

[0032] Term explanation:

[0033] SOLAS Convention: The full name of the International Convention for the Safety of Life at Sea, is the core safety specification of the International Maritime Organization (IMO), which puts forward mandatory requirements for escape passages, fire fighting facilities and other aspects in ship design, construction and operation. The compliance design of the present application (such as passage width, unlocking mechanism) needs to meet the relevant provisions of SOLAS (such as II-2 / 13.3.2).

[0034] Classification society: an organization that provides inspection and issues certificates for ships, such as China Classification Society (CCS) and DNV. The protective device of the present application needs to pass the impact resistance and corrosion resistance test of the classification society to ensure that it meets the international navigation safety standards.

[0035] Movable steel grating: a movable fence structure made of steel, which is realized by hinge or sliding rail to realize storage and closing, used to cover the opening of the ladder.

[0036] Double-layer staggered steel grating: two layers of steel grating are welded in staggered arrangement, and transverse reinforcing ribs are added in the middle to form a honeycomb structure resistant to impact.

[0037] Inclined slot structure: the inclined groove designed at the bottom of the grating matches the convex buckle at the edge of the ladder opening, and self-locking is realized by sliding through the inclined surface when closed.

[0038] Gravity-triggered closure mechanism: A physical mechanism that utilizes the grid's own gravity to achieve rapid lowering and closure, without the need for external power.

[0039] Mechanical self-locking device: Locking is achieved through purely mechanical structures such as buckles and inclined planes. After closing, it can only be released by specific operations (such as internal unlocking).

[0040] Authorized unlocking mechanism: The unlocking device is located in a concealed position on the upper deck that cannot be reached from the lower deck (such as behind the control panel in the cockpit), and requires special tools or authorized personnel to operate.

[0041] Compliance design: The device design meets both protection requirements and safety regulations (such as the width requirements of SOLAS escape routes).

[0042] Anti-pirate tool damage: refers to a device that can withstand physical attacks from tools commonly used by pirates (such as axes and crowbars) and maintain structural integrity.

[0043] Hinged storage: The grille is connected by hinges and can be flipped to the side of the stairwell in normal operation, and stored parallel to the deck plane.

[0044] Concealed unlocking: The unlocking device is hidden in non-accessible areas (such as inside the bulkhead or the cockpit control panel), accessible only to authorized personnel.

[0045] Figures 1 to 5 A rapid anti-piracy blocking device for an external stairway in the residential area of ​​a methanol dual-fuel ship is shown. The stairway side 1 and the stairway side 2 are connected, and the stairway side 1 is provided with a stairway opening 3. The device includes a grid structure, a quick release structure, a snap-fit ​​structure and an unlocking structure.

[0046] The grid structure is hinged to the connection between the stair rail edge 1 and the stair rail side 2 via the hinge 6, so that the grid structure can be flipped between the stair rail edge 1 and the stair rail side 2; the grid structure adopts a grid frame 7 with steel grid 8 and reinforcing ribs 9, and the grid top frame 10 of the grid frame 7 is a hollow structure.

[0047] The quick-release structure includes a side fixing pin 12 fixed on the side of the stairway 2 and a grid pin 13 fixed on the grid frame 7. When the quick-release pin 14 is inserted into the side fixing pin 12 and the grid pin 13, the grid structure is fixed on the side of the stairway 2. When the quick-release pin 14 is pulled out, the grid structure is separated from the side of the stairway 2.

[0048] The buckle structure is arranged on the grid top frame 10, the buckle structure is matched with the clamping groove 5 of the grid side 4 arranged on the ladder side 1, the buckle structure is inserted into the clamping groove 5, and the grid structure is locked on the ladder opening 3; the latch 16 in the buckle structure is arranged on the grid top frame 10 through the spring 17, the latch 16, the connecting rod 17, the T-shaped clamping block 20 and the locking block 22 act in sequence, the connecting rod 14 is arranged in the latch slot 18 of the latch 16, the clamping block insertion rod 21 is inserted into the connecting rod hole 19, the T-shaped clamping block 20 acts into the locking block 22, and the connecting rod 14 is arranged in the latch slot 18 of a plurality of latches 16.

[0049] The unlocking structure includes a section of the connecting rod 23 connected to the connecting rod 14 through the connecting rope 15, and the other end of the connecting rod 14 is connected to the end of the grid top frame 10 through the connecting rod reset spring 11.

[0050] When the grid structure is fixed on the ladder side 2, the quick release latch 14 is inserted into the side fixed pin barrel 12 and the grid pin barrel 13; at this time, the T-shaped clamping block 20 in the buckle structure is located at the first clamping opening 23. The core of the present application is to realize the rapid closure and compliance protection of the ladder opening through an active grid structure, the active grid body adopts a double-layer staggered steel grid structure, a transverse reinforcing rib is arranged in the middle to form an impact-resistant barrier, and the surface is subjected to corrosion prevention treatment to adapt to the marine high-salt and high-humidity environment.

[0051] Hinge storage and gravity triggering mechanism: the grid is connected with the fixed support of the ladder opening side through a hinge, is normally turned up and stored in the side in the upward direction, and does not occupy the passing space; the quick release latch 14 is pulled out when closed, is quickly lowered through gravity, and does not need power or complex mechanical driving.

[0052] Mechanical self-locking device: the opposite sides of the grid hinge are designed with a beveled buckle structure matched with the fixed clamping groove 5 of the edge of the ladder side 1, and the self-locking form formed after closing needs to be unlocked internally. The latch 16 in the buckle structure acts on the grid side 4, the latch 16 is subjected to downward pressure and compresses the spring 17. When the grid pushes the latch 16 to pop back, the T-shaped clamping block 20 moves to the right, and when the spring 17 pops back the latch 16, the T-shaped clamping block 20 is clamped into the second clamping opening, and the T-shaped clamping block 20 cannot be compressed back again. At this time, the latch 16 is inserted into the clamping groove 5 of the grid side 4, and the self-locking of the grid is completed.

[0053] The unlocking position is arranged in the room of the upper deck living area, only authorized personnel can operate through special tools or pull rod. The unlocking mode is that the limiting slider is hooked back to the left side through the rod in the buckle. Pulling the pull rod 23 drives the connecting rod 14 to move in the bolt slot 18, the T-shaped block 2 moves in the locking block 22 along the clamping inclined surface, so that the bolt 16 compresses the spring 17, and the bolt 16 is retracted into the grid top frame 10. After the grid is opened, the bolt 16 is retracted under the action of the spring 17; at this time, the T-shaped block 20 is reset to the first clamping port 23 of the locking block 22.

[0054] The operation process of the above scheme is as follows:

[0055] Normal passage: the grid is stored in the side of the ladder, the ladder is completely unobstructed, and the width requirement of the SOLAS escape passage is met;

[0056] Emergency closure: when pirates attack, the crew triggers the release device, and the grid is closed and self-locked within 5 seconds under the action of gravity;

[0057] Authorized unlocking: only the pre-set hidden position inside the room of the upper deck living area can be used to operate the unlocking, so as to avoid the pirates from destroying from the lower deck.

[0058] The advantages and disadvantages comparison table of the present application

[0059]

[0060] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A methanol dual-fuel pirate-preventing rapid blocking device for the outside ladder of a residential area of a ship, a ladder edge (1) and a ladder side edge (2) are connected, and a ladder opening (3) is arranged on the ladder edge (1); characterized in that: The device comprises a grating structure, a quick release structure, a buckle structure and an unlocking structure; The grating structure is hinged to the connection between the ladder side (1) and the ladder side (2) through a hinge (6), realizing the turnover of the grating structure between the ladder side (1) and the ladder side (2); the grating structure adopts a steel grating (8) arranged in a grating frame (7), and the grating top frame (10) of the grating frame (7) is a hollow structure. The quick release structure comprises a side fixed pin barrel (12) fixed on the ladder side (2) and a grating pin barrel (13) fixed on the grating frame (7), when the quick release pin (14) is inserted into the side fixed pin barrel (12) and the grating pin barrel (13), the grating structure is fixed on the ladder side (2); when the quick release pin (14) is pulled out, the grating structure is separated from the ladder side (2); The buckle structure is arranged on the grating top frame (10), the buckle structure is matched with the clamping groove (5) of the grating side (4), the grating side (4) is arranged on the ladder side (1), the buckle structure is inserted into the clamping groove (5), and the grating structure is locked on the ladder opening (3); the bolt (16) in the buckle structure is arranged on the grating top frame (10) through the spring (17), the bolt (16), the connecting rod (17), the T-shaped clamping block (20) and the locking block (22) act in sequence, the connecting rod (14) is arranged in the bolt slot (18) of the bolt (16), the clamping block inserting rod (21) is inserted into the connecting rod hole (19), the T-shaped clamping block (20) acts into the locking block (22), and the connecting rod (14) moves along the length direction of the bolt slot (18) to drive the T-shaped clamping block (20) to change between the first clamping opening (23) and the second clamping opening (24) in the locking block (22). The unlocking structure comprises a pull rod (23) connected to one end of the connecting rod (14) through a connecting rope (15), and the other end of the connecting rod (14) is connected to the end of the grating top frame (10) through a connecting rod return spring (11).

2. A methanol dual fuel ship's residential area external stairway anti-piracy rapid blocking device according to claim 1, characterized in that: The grating frame (7) of the grating structure is further provided with a reinforcing rib (9).

3. A methanol dual fuel ship's residential area external stairway anti-piracy rapid blocking device according to claim 2, characterized in that: The connecting rod (14) is arranged in the bolt slot (18) of a plurality of bolts (16).

4. A methanol dual fuel ship's residential area external stairway anti-piracy rapid blocking device according to claim 3, characterized in that: Pulling the pull rod (23) drives the connecting rod (14) to move in the bolt slot (18), the T-shaped clamping block (2) moves along the clamping opening slope in the locking block (22), the bolt (16) is compressed, and the bolt (16) is retracted into the grating top frame (10).

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