Folding anti-pirate grille door for ship
By designing a folding anti-pirate grille door of the ship, the grille door frame structure with latch and rotary connection is used to lock the inner side of the door, solving the problem of pirate invasion, delaying the invasion time, and protecting crew members and ship safety.
Patent Information
- Application Number
- CN202422240644.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-12
AI Technical Summary
During the voyage of ocean-going ships, pirates may enter the cab through the main deck. The existing technology lacks effective protective measures, resulting in insufficient crew escape time and serious ship losses.
A ship folding anti-pirate grille door is designed. The grille door frame consists of the left door frame and the right door frame. It is locked on the inner side of the door through a latch and rotational connection, making it difficult to open the outside of the door. It is fixed with the support plate and the deck structure to delay the invasion of pirates.
Effectively prevent pirates from entering the main controlled area of the ship, gain escape time for crew members, and reduce ship losses.
Smart Images

Figure CN223187622U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shipbuilding, in particular to a foldable anti-piracy grille door for ships. Background Art
[0002] Ocean-going vessels may encounter pirate attacks during voyages. The bridge, a key control area, is typically accessed from the main deck via an outdoor inclined ladder. To increase the time pirates have to enter the bridge after boarding and create favorable conditions for crew escape, it is essential to install anti-piracy grille doors at the ladder entrance. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a folding anti-piracy grille door for ships, which is installed at the main stairway entrance leading to the superstructure on the main deck. The folding anti-piracy grille door is designed so that once locked from the inside, it will be difficult to open from the outside. It can delay or even effectively prevent pirates from entering the main control space of the ship, buy time for the crew to escape, and reduce ship losses.
[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:
[0005] A foldable anti-piracy grille door for ships includes a grille gantry, which consists of a left gantry and a right gantry. The opposite ends of the left gantry and the right gantry are flipped and connected. One end of the grille gantry is rotatably connected to a deck structure, and the other end is detachably connected to the deck structure.
[0006] Furthermore, the left gantry and the right gantry are composed of a plurality of parallel and oppositely arranged pipe fittings, and a plurality of groups of gantry sleeves are provided at the opposite ends of the left gantry and the right gantry, which are arranged in pairs and relatively parallel to each other. The opposite side walls of the two gantry sleeves in each group are fixedly connected, and the outermost pipe fittings at the opposite ends of the left gantry and the right gantry are respectively passed through one of the gantry sleeves in each group and are rotatably connected to the gantry sleeves.
[0007] Furthermore, a rotating rod is fixed on the right end face of the grille gantry along its width direction, and a gantry seat plate is fixed on the deck structure located directly below the right end of the grille gantry along the width direction of the grille gantry. The gantry seat plate is at the same height as the deck, and two gantry sleeves are provided on the gantry seat plate at intervals along the width direction of the grille gantry. A gantry sleeve is respectively passed through both ends of the rotating rod, and both ends of the rotating rod are rotatably connected to the gantry sleeve.
[0008] Furthermore, a latch base plate is fixed on the upper end surface of the left gantry away from the right gantry, and a plurality of groups of latch rod sleeves are arranged on the upper end surface of the latch base plate at intervals along the length direction of the grille gantry, and the two latch rod sleeves in each group are arranged at intervals along the width direction of the grille gantry and coaxially; a plurality of U-shaped eye rings are arranged at intervals on the deck structure on both sides of the width direction of the left end of the grille gantry, and each U-shaped eye ring is arranged opposite to a group of latch rod sleeves, and a latch rod is inserted into a group of latch rod sleeves and the U-shaped eye ring opposite thereto.
[0009] Furthermore, the latch rod sleeves are divided into two groups, each group includes two latch rod sleeves, and one latch rod sleeve in each group of latch rod sleeves is arranged relatively parallel to one latch rod sleeve in the other group.
[0010] Furthermore, a latch eye plate is fixed to one end of the latch rod away from the U-shaped eye ring, and a U-shaped handle is provided on the latch seat plate located on one side of the latch rod. The latch eye plate is inserted into the U-shaped handle, and the U-shaped handle is located between the two sets of latch rod sleeves.
[0011] Furthermore, two support plates are symmetrically provided on both sides of the right door frame in the width direction. When the grille door is closed, the support plates are overlapped on the deck structure.
[0012] The utility model provides a foldable anti-piracy grille door for ships. The grille door frame is divided into two rectangular structures on the left and right. A latch rod and a latch seat plate are provided on the top of the left door frame. The latch seat plate and the grille door frame are welded and fixed. The latch rod can move left and right on the latch seat plate through a latch rod sleeve, and together with the latch eye ring welded to the deck structure, the grille door frame is fixed. A door frame seat plate is provided at the end of the right door frame to be connected to the deck structure. The left and right door frames are connected by a latch rod sleeve, which can be flipped and folded.
[0013] When the grille door is closed, the gantry base plate is flush with the deck, and the latch rod is inserted into the latch eye to secure it, effectively preventing pirates from entering the upper construction area through the stairway. When the grille door is open, it can be secured to the hull railing with a stainless steel chain, ensuring normal access to the stairway during navigation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional diagram of a foldable anti-pirate grille door according to the present invention;
[0015] Figure 2 It is a top view of a foldable anti-piracy grille door according to the present invention;
[0016] Figure 3 This is a side view of the folding anti-piracy grille door described in the present invention.
[0017] Among them, 1- grid door frame, 2- door frame sleeve, 3- door frame seat plate, 4- U-shaped eye ring, 5- U-shaped handle, 6- latch rod, 7- latch eye plate, 8- latch seat plate, 9- support plate, 10- latch rod sleeve, 11- left door frame, 12- right door frame, 13- deck structure, 14- turning rod. DETAILED DESCRIPTION
[0018] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0019] like Figure 1-Figure 3 As shown, a folding anti-piracy grille door for ships includes a grille door frame 1, which is composed of a left door frame 11 and a right door frame 12. The left door frame 11 and the right door frame 12 are composed of a plurality of parallel and oppositely arranged pipes. At the opposite ends of the left door frame 11 and the right door frame 12, a plurality of groups of door frame sleeves 2 are provided, which are arranged in pairs and are relatively parallel. The opposite side walls of the two door frame sleeves 2 in each group are fixedly connected. The outermost pipes at the opposite ends of the left door frame 11 and the right door frame 12 are respectively passed through each group of door frames. One of the sleeves 2 is rotatably connected to the gantry sleeve 2; a rotating rod 14 is fixed on the right end face of the grille gantry 1 along its width direction, and a gantry seat plate 3 is fixed on the deck structure 13 located just below the right end of the grille gantry 1 along the width direction of the grille gantry 1. The gantry seat plate 3 is at the same height as the deck structure 13, and two gantry sleeves 2 are spaced apart on the gantry seat plate 3 along the width direction of the grille gantry 1. A gantry sleeve 2 is respectively passed through the two ends of the rotating rod 14, and the two ends of the rotating rod 14 are connected to the gantry sleeve 2. Rotational connection; a latch seat plate 8 is fixed on the upper end surface of the left door frame 11 away from the right door frame 12, and two groups of latch rod sleeves 10 are arranged in a group of two at intervals along the length direction of the grille door frame 1. The two latch rod sleeves 10 in each group are spaced along the width direction of the grille door frame 1 and are arranged coaxially, and one latch rod sleeve 10 in each group of latch rod sleeves 10 is arranged relatively parallel to one latch rod sleeve 10 in the other group; at the left end of the grille door frame 1, the width A plurality of U-shaped eye rings 4 are staggered and arranged at intervals on the deck structure 13 on both sides of the degree direction, and each U-shaped eye ring 4 is arranged opposite to a group of latch rod sleeves 10, and a latch rod 6 is passed through a group of latch rod sleeves 10 and the U-shaped eye ring 4 opposite thereto; a latch eye plate 7 is fixed to the end of the latch rod 6 away from the U-shaped eye ring 4, and a U-shaped handle 5 is provided on the latch seat plate 8 located on one side of the latch rod 6, and the latch eye plate 7 is stuck in the U-shaped handle 5, and the U-shaped handle 5 is located between the two groups of latch rod sleeves 10.
[0020] Two support plates 9 are symmetrically provided on both sides of the right door frame 12 in the width direction. When the grille door is closed, the support plates 9 are overlapped on the deck structure 13.
[0021] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A ship folding anti-piracy grille door, characterized in that: The cam is connected to the deck structure at one end and the other end is detachably connected to the deck structure; a latch seat plate is fixed on the upper end surface of the left cam away from the right cam, and a plurality of groups of latch rod sleeves are arranged at intervals along the length direction of the cam, and the two latch rod sleeves in each group are arranged at intervals along the width direction of the cam and coaxially; a plurality of U-shaped eye rings are arranged at intervals on the deck structure on both sides of the width direction of the left end of the cam, each U-shaped eye ring is arranged opposite to a group of latch rod sleeves, and a latch rod is passed through a group of latch rod sleeves and the U-shaped eye ring opposite thereto; a latch eye plate is fixed on the end of the latch rod away from the U-shaped eye ring, and a U-shaped handle is provided on the latch seat plate located on one side of the latch rod, the latch eye plate is inserted into the U-shaped handle, and the U-shaped handle is located between the two groups of latch rod sleeves.
2. A foldable anti-piracy grille door for ships according to claim 1, characterized in that: The left gantry and the right gantry are composed of a plurality of parallel and oppositely arranged pipe fittings. A plurality of groups of gantry sleeves are provided at the opposite ends of the left gantry and the right gantry, and are arranged in pairs and relatively parallel to each other. The opposite side walls of the two gantry sleeves in each group are fixedly connected. The outermost pipe fittings at the opposite ends of the left gantry and the right gantry are respectively passed through one of the gantry sleeves in each group and are rotatably connected to the gantry sleeves.
3. A foldable anti-piracy grille door for ships according to claim 1, characterized in that: A rotating rod is fixed on the right end face of the grille gantry along its width direction, and a gantry seat plate is fixed on the deck structure directly below the right end of the grille gantry along the width direction of the grille gantry. The gantry seat plate is at the same height as the deck, and two gantry sleeves are provided on the gantry seat plate at intervals along the width direction of the grille gantry. A gantry sleeve is respectively passed through both ends of the rotating rod, and both ends of the rotating rod are rotatably connected to the gantry sleeves.
4. A foldable anti-piracy grille door for ships according to claim 3, characterized in that: The latch rod sleeves are divided into two groups, each group including two latch rod sleeves, and one latch rod sleeve in each group is arranged parallel to one latch rod sleeve in the other group.
5. A foldable anti-piracy grille door for ships according to claim 3, characterized in that: Two support plates are symmetrically provided on both sides of the right door frame in the width direction. When the grille door is closed, the support plates are overlapped on the deck structure.