Marine anti-pirate grating

Abstract

A marine anti-pirate grille comprises grille bodies, the grille bodies are located below an inclined ladder and continuously arranged in the length direction of the inclined ladder, one end of each grille body is connected with a hull structure at the top end of the inclined ladder through a fixed steering device, and the other end of each grille body is connected with a hull structure at the bottom end of the inclined ladder through a locking device. The fixed steering device is composed of a bottom eye plate and a U-shaped steering ring, the bottom eye plate is fixed to a ship body structure, water retaining flat steel is arranged around the inclined ladder, the water retaining flat steel at the bottom of the inclined ladder is arranged on the side, away from the inclined ladder, of the bottom eye plate, the U-shaped steering ring is arranged in an inverted buckling mode and covers the water retaining flat steel, one end of the U-shaped steering ring is hinged to the bottom eye plate, and the other end of the U-shaped steering ring is hinged to the inclined ladder. And the other end is integrally connected with the grille main body frame. According to the anti-pirate grille, the anti-pirate grille body and the fixed steering device are connected in a protruding mode, the grille locking device adopts an anti-theft component, the possibility that pirates open bolt components of all parts of the anti-pirate grille is avoided, and the reliability and safety of the overall structure of the anti-pirate grille are greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of ship construction and design, and in particular relates to an anti-pirate grille for a ship. Background Art

[0002] In recent years, with the rapid development of international maritime trade and the acceleration of the globalization process, pirate attacks have occurred frequently, seriously affecting the operational safety of maritime trade. In order to effectively protect the safety of personnel and property on board, the international community has adopted a series of anti-piracy measures, among which anti-pirate grilles are one of the very effective measures. Anti-pirate grilles are a kind of protective equipment used in the openings of ship passages to strengthen the ship structure and protection capabilities when pirates attack, and to resist pirates from entering important places. In the process of using traditional anti-pirate grilles, there are the following shortcomings:

[0003] 1) As for the steering device, since the grille frame body and the fixed steering device are connected in a straight form, the bolts of the fixed steering device are exposed to the outside. If pirates attack, the pirates can insert a wrench through the gap of the grille frame body and then unscrew the bolts of the fixed steering device, making the entire structure of the anti-pirate grille invalid.

[0004] 2) For the locking device, the locking device structure acts directly on the structural platform. In this way, the edge distance of the water retaining flat steel around the opening of the platform structure relative to the opening of the platform structure needs to be increased. This will firstly lead to a reduction in the width of the passage around the structural opening. For compact ships, it will affect the passage of personnel and increase the difficulty of design. Secondly, the increase in the edge distance will cause personnel to trip when going up and down the stairs using the inclined ladder, affecting the safety of personnel passage.

[0005] 3) As for the locking device, since the connection area between the lock buckle and the main body of the grille is small, when pirates attack, they can cut it off with simple tools, rendering the entire structure of the anti-pirate grille ineffective; in addition, when people use the inclined ladder to go up and down the stairs, the small protruding steel plate at this position may hit the head of the person, causing injury.

[0006] 4) As for the locking device, pirates can insert tools through the gap in the grille frame body and directly open the padlock, rendering the entire structure of the anti-pirate grille ineffective.

[0007] 5) When the anti-pirate grille is in idle state, it is usually fixed to the back of the upper inclined ladder. The traditional method is to use a safety chain, but this method causes greater vibration during the navigation of the ship. If the safety chain is disengaged, the anti-pirate grille will fall and cause injuries to personnel. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a marine anti-pirate grille, which aims to reduce or eliminate the gaps in the anti-pirate grille and further achieve the purpose of anti-pirate. The technical solution adopted is:

[0009] A marine anti-piracy grille comprises a grille body, which is located below an inclined ladder and is continuously arranged along the length direction of the inclined ladder. One end of the grille body is connected to a hull structure at the top end of the inclined ladder through a fixed steering device, and the other end is connected to the hull structure at the bottom end of the inclined ladder through a locking device.

[0010] The fixed steering device consists of a bottom eye plate and a U-shaped steering ring. The bottom eye plate is fixed on the hull structure. Water-retaining flat steels are arranged around the inclined ladder. The water-retaining flat steel at the bottom of the inclined ladder is arranged on the side of the bottom eye plate away from the inclined ladder. The U-shaped steering ring is arranged inverted to cover the water-retaining flat steel. One end of the U-shaped steering ring is hinged to the bottom eye plate, and the other end is integrally connected to the grid main body frame.

[0011] The locking device consists of a top eye plate, a grooved nut and a bolt. The top eye plate is fixed to the hull structure. The grooved nut is welded and fixed to the frame of the grille body. The opening of the grooved nut is located at the bottom of the groove. A nut is welded on the back of the bottom eye plate. The grooved nut corresponds to the bottom eye plate. The bolt passes through the bottom eye plate and the grooved nut to fix it.

[0012] The above-mentioned anti-pirate grille for ship, further, has a side frame of the grille body provided with a hook, and the hook hooks the side of the inclined ladder.

[0013] The above-mentioned anti-pirate grille for ship, further, has two locking devices arranged at the end of the grille body, there is a distance between the two locking devices, and the water retaining flat steels surrounding the inclined ladder are disconnected at the locking devices.

[0014] The above-mentioned anti-pirate grille for ship further comprises two bottom eye plates, and the end of the U-shaped turning ring is located in the middle of the two bottom eye plates.

[0015] The above-mentioned anti-pirate grille for ship, further, has a plurality of circular holes formed at equal intervals on the side frame of the grille body, and the hooks are fixed to the circular holes by bolts.

[0016] The above-mentioned marine anti-pirate grille further comprises a water retaining flat steel which is welded and fixed to a locking device at a disconnection point.

[0017] The grille body of the present invention is connected to the fixed steering device in the form of a protrusion, and the grille locking device adopts an anti-theft component, which avoids the possibility of pirates opening the bolt components of various parts of the anti-pirate grille, greatly improving the reliability and safety of the overall structure of the anti-pirate grille; at the same time, during the installation and use of this new anti-pirate grille, the passage width around the opening of the structural platform is increased, and the risk of people bumping their heads and tripping when going up and down the inclined body is avoided, thereby ensuring the safety of people's passage; in addition, during the idle suspension of this anti-pirate grille, the problem of large shaking during the operation of the ship and the possibility of the grille falling off are avoided, thereby ensuring the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0019] Figure 2 It is a side view structural schematic diagram of the present invention;

[0020] Figure 3 is a schematic diagram of the locking device structure;

[0021] Figure 4 is a schematic diagram of the structure of a fixed steering device;

[0022] Figure 5 , 6 It is a side view schematic diagram of the structure of the present invention installed on an inclined ladder;

[0023] Among them, 1-grid body, 2-inclined ladder, 3-bottom eye plate, 4-U-shaped turning ring, 5-water retaining flat steel, 6-top eye plate, 7-groove nut, 8-bolt, 9-hook, F-fixed steering device, G-locking device. DETAILED DESCRIPTION

[0024] The present invention will be further described in conjunction with the accompanying drawings.

[0025] like Figure 1 The anti-piracy grille for a ship shown includes a grille body, which is located below the inclined ladder and is continuously arranged along the length direction of the inclined ladder. One end of the grille body is connected to the hull structure at the top end of the inclined ladder through a fixed steering device, and the other end is connected to the hull structure at the bottom end of the inclined ladder through a locking device.

[0026] The fixed steering device consists of a bottom eye plate and a U-shaped steering ring. The bottom eye plate is fixed on the hull structure. Water-retaining flat steel is arranged around the inclined ladder. The water-retaining flat steel at the bottom of the inclined ladder is arranged on the side of the bottom eye plate away from the inclined ladder. The U-shaped steering ring is inverted and covers the water-retaining flat steel. One end of the U-shaped steering ring is hinged to the bottom eye plate, and the other end is integrally connected to the main frame of the grid. There are two bottom eye plates, and the end of the U-shaped steering ring is located in the middle of the two bottom eye plates.

[0027] The locking device consists of a top eye plate, a grooved nut, and a bolt. The top eye plate is fixed to the hull structure, the grooved nut is welded and fixed to the frame of the grille body, the opening of the grooved nut is located at the bottom of the groove, a nut is welded on the back of the bottom eye plate, the grooved nut corresponds to the bottom eye plate, and the bolt passes through the bottom eye plate and the grooved nut to fix it. Two locking devices are set at the end of the grille body, and there is a gap between the two locking devices. The water retaining flat steel surrounding the inclined ladder is disconnected at the locking device, and the water retaining flat steel is welded and fixed to the locking device at the disconnection point.

[0028] like Figure 5 , 6 As shown, the side frame of the grille body is provided with a hook, which hooks the side of the inclined ladder, and the side frame of the grille body is provided with a plurality of circular holes at equal intervals, and the hooks are fixed to the circular holes by bolts.

[0029] Anti-pirate grilles are used at the entrance of outdoor stairways. Usually, when not in use, the grilles are hung on the back of the outdoor stairways on the upper deck so that the crew can go up and down the stairs normally. When pirates attack, in order to prevent pirates from entering the cab, control room and other important control places through the outdoor stairs, the anti-pirate grilles need to be placed on the deck and locked to close the openings of the deck structure.

[0030] When pirates attack, they cannot directly insert a wrench through the gap of the grille frame body E to unscrew the bolts fixing the steering device F, so this design makes the entire structure of the anti-pirate grille more reliable. The water-retaining flat steel is disconnected by the locking device, which prevents people from tripping when going up and down the inclined body 1, ensuring the safety of people passing through. The hook makes the grille fixed firmly, preventing the grille from falling off, ensuring the safety of people passing through.

[0031] The anti-pirate grille body of the present invention is connected to the fixed steering device in the form of a protrusion, and the grille locking device adopts an anti-theft component, which avoids the possibility of pirates opening the bolt components of various parts of the anti-pirate grille, greatly improving the reliability and safety of the overall structure of the anti-pirate grille; at the same time, during the installation and use of this new anti-pirate grille, the passage width around the opening of the structural platform is increased, and the risk of people bumping their heads and tripping when going up and down the inclined body is avoided, thereby ensuring the safety of people's passage; in addition, during the idle suspension of this anti-pirate grille, the problem of large shaking during the operation of the ship and the possibility of the grille falling off are avoided, thereby ensuring the safety of personnel.

Claims

1. A marine anti-pirate grille, characterized in that: The invention comprises a grid body (1), which is located below an inclined ladder (2) and is continuously arranged along the length direction of the inclined ladder, one end of the grid body is connected to the hull structure at the top end of the inclined ladder through a fixed steering device (F), and the other end is connected to the hull structure at the bottom end of the inclined ladder through a locking device (G); The fixed steering device is composed of a bottom eye plate (3) and a U-shaped steering ring (4), wherein the bottom eye plate is fixed on the hull structure, and water retaining flat steel (5) is arranged around the inclined ladder, and the water retaining flat steel at the bottom of the inclined ladder is arranged on the side of the bottom eye plate away from the inclined ladder, and the U-shaped steering ring is arranged in an inverted manner to cover the water retaining flat steel, and one end of the U-shaped steering ring is hinged to the bottom eye plate, and the other end is integrally connected to the grid main body frame; The locking device consists of a top eye plate (6), a grooved nut (7), and a bolt (8). The top eye plate is fixed on the hull structure. The grooved nut is welded and fixed to the frame of the grille body. The opening of the grooved nut is located at the bottom of the groove. A nut is welded on the back of the bottom eye plate. The grooved nut corresponds to the bottom eye plate. The bolt passes through the bottom eye plate and the grooved nut to be fixed.

2. The anti-pirate grille for ships according to claim 1, characterized in that: The side frame of the grille body is provided with a hook (9), which hooks the side edge of the inclined ladder.

3. The anti-pirate grille for ships according to claim 1, characterized in that: Two locking devices are arranged at the end of the grille body, there is a distance between the two locking devices, and the water retaining flat steels surrounding the inclined ladder are disconnected at the locking devices.

4. The anti-pirate grille for ships according to claim 1, characterized in that: There are two bottom eye plates, and the end of the U-shaped turning ring is located in the middle of the two bottom eye plates.

5. The anti-pirate grille for ships according to claim 2, characterized in that: A plurality of circular holes are opened at equal intervals on the side frame of the grille body, and the hooks are fixed to the circular holes by bolts.

6. The anti-pirate grille for ships according to claim 3, characterized in that: The water retaining flat steel is welded and fixed to the locking device at the disconnection point.

Images