A marine gangway

Abstract

The application discloses a marine gangway, which comprises a head step arranged on a deck of a ship, a tail step arranged on a bank, a middle connecting ladder connected with the head step and the tail step at two ends and capable of rotating around the connecting points, and middle steps arranged on the middle connecting ladder at equal intervals. The middle steps are designed in the shape of inverted triangle, and the step guard plates are curved. When the ladder rotates, the curved surface keeps in close contact with the edge of the step, and when the gangway rotates, the curved surface can prevent the feet from being injured by being clamped into the step.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, and specifically relates to a ship gangway. Background Technology

[0002] When ships are docked, ship gangways are crucial for the loading and unloading of personnel and cargo. Existing, simple ship gangways are ill-suited to adapt to changes in tides, water levels, and height differences caused by docking at different piers. Traditional gangways relying on hydraulic or electric drives suffer from complex equipment and high maintenance costs, and are prone to failure, especially in the humid and saline marine environment. Furthermore, some simple gangway structures have steps that become inclined as the gangway swings up and down, posing safety hazards. Therefore, developing a sloping gangway where the steps remain horizontal is essential. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a ship gangway that can swing up and down, wherein the step plane remains horizontal and the step height is variable during the up-and-down swinging process.

[0004] The objective of this invention is achieved through the following technical solution: a ship's gangway, comprising:

[0005] The first step is set on the ship's deck.

[0006] The tail steps are set up on the shore.

[0007] The middle connecting ladder has the first step and the last step connected at both ends, and the middle connecting ladder can rotate around the connection point.

[0008] The middle steps are evenly spaced and set on the middle connecting ladder.

[0009] Preferably, the intermediate connecting ladder includes:

[0010] The upper ladder frame connects the tops of the first and last steps via step axles;

[0011] The lower ladder frame connects the bottom of the first and last steps via step axles;

[0012] The first step, the last step, the upper ladder, and the lower ladder form a rotatable parallelogram structure.

[0013] Preferably, the top of the middle step is connected to the upper ladder frame via a step shaft, and the bottom of the middle step is connected to the lower ladder frame via a step shaft.

[0014] Preferably, the middle step has an inverted triangular structure.

[0015] Preferably, the middle step includes a step panel, a step guard plate, and a middle step plate. The step panel is the upper surface of the middle step and is always kept horizontal. The step guard plate is the side panel of the middle step. The middle step plate is located inside the middle step and is vertically connected to the center of the step panel and the bottom of the middle step, dividing the middle step into left and right sections. The step shaft is connected to both ends of the middle step plate.

[0016] Preferably, the step guard plate is a curved panel.

[0017] Preferably, the first and last steps are provided with half-side middle steps.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This invention provides a ship's gangway that can swing up and down. During the swinging motion, the step plane remains horizontal and the step height is variable. Utilizing the parallelogram principle, this invention ensures that all steps remain horizontal even when there is a drop between the two ends of the gangway. The step height adjusts as the gangway swings up and down. Protective plates are installed under the step panels to prevent toes from getting caught between steps when the step height changes, ensuring the safe and convenient boarding and disembarking of personnel and cargo. Attached Figure Description

[0020] Figure 1 This is a lateral view of the ship's gangway being horizontally erected in an embodiment of the present invention;

[0021] Figure 2 This is a top view of the ship's gangway being horizontally erected in an embodiment of the present invention;

[0022] Figure 3 This is a top view of the ship's gangway being erected at 60° in an embodiment of the present invention;

[0023] Figure 4 This is a top view of the ship's gangway being erected at 20° in an embodiment of the present invention;

[0024] Figure 5 This is a top view of the ship's gangway being erected at -20° in an embodiment of the present invention;

[0025] Figure 6 This is a top view of the ship gangway-55 being erected in an embodiment of the present invention.

[0026] In the diagram, 1 is the first step; 2 is the last step; 3 is the upper ladder; 4 is the lower ladder; 5 is the middle step; 6 is the step axle; 7 is the step panel; 8 is the step guard plate; and 9 is the middle step plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] The present invention provides a marine gangway, comprising:

[0029] First step 1, set on the ship's deck;

[0030] Tail step 2, erected on the shore;

[0031] The middle connecting ladder is connected to the first step 1 and the last step 2 at both ends, and the middle connecting ladder can rotate around the connection point;

[0032] The middle step 5 is set at equal intervals on the middle connecting ladder.

[0033] In one embodiment of the present invention, the intermediate connecting ladder includes:

[0034] The upper ladder frame 3 is connected to the top of the first step 1 and the last step 2 via the step shaft 6;

[0035] The lower ladder frame 4 is connected to the bottom of the first step 1 and the last step 2 via the step shaft 6;

[0036] The first step 1, the last step 2, the upper ladder 3, and the lower ladder 4 form a rotatable parallelogram structure.

[0037] In one embodiment of the present invention, the top of the middle step 5 is connected to the upper ladder frame 3 via a step shaft 6, and the bottom of the middle step 5 is connected to the lower ladder frame 4 via a step shaft 6.

[0038] In one embodiment of the present invention, the middle step 5 is an inverted triangular structure.

[0039] In one embodiment of the present invention, the middle step 5 includes a step panel 7, a step guard plate 8, and a middle step plate 9. The step panel 7 is the upper surface of the middle step 5 and is always kept horizontal. The step guard plate 8 is the side panel of the middle step 5. The middle step plate 9 is disposed inside the middle step 5 and is vertically connected to the center of the step panel 7 and the bottom of the middle step 5, dividing the middle step 5 into left and right sections. The step shaft 7 is connected to both ends of the middle step plate 9.

[0040] In one embodiment of the present invention, the step guard plate 8 is configured as a curved panel.

[0041] In one embodiment of the present invention, half-side middle steps are provided on the first step 1 and the last step 2.

[0042] like Figures 1 to 6 As shown, in one embodiment of the present invention, the ship's gangway includes a bow step 1, a stern step 2, two upper ladder frames 3, two lower ladder frames 4, multiple middle steps 5, and multiple step shafts 6, forming a parallelogram structure. The bow step 1, stern step 2, upper ladder frames 3, lower ladder frames 4, and middle steps 5 are connected by step shafts 6, forming a rotatable parallelogram. The bow step 1 is fixed to the ship's deck, and the stern step 2 rests on the shore. When the ship rises and falls, the bow step 1 rises and falls. Due to the principle of the parallelogram, the upper ladder frames 3, lower ladder frames 4, and middle steps 5 also swing in parallel, thereby keeping the steps horizontal. The middle steps 5 include a step panel 7, a step guard plate 8, a step center plate 9, and two step shafts 6. The step guard plate 8 is a curved panel, and the middle steps 5 have an inverted triangular shape when viewed from the side. The steps are connected to the upper ladder frame 3 and the lower ladder frame 4 via two step shafts 6 to form a parallelogram. In this embodiment, the middle step 5 is designed as an inverted triangle, and the step guard plate 8 is curved. When the ladder rotates, the curved surface keeps in contact with the edge of the adjacent step. When the gangway rotates, the curved surface can prevent feet from being stuck in the step and getting injured.

[0043] The marine gangway provided by this invention has the following advantages:

[0044] 1. Strong environmental adaptability: Due to changes in tides, water levels, and height differences caused by docking at different piers, the gangway on the ship can flexibly adapt to changes in height, and the height of the gangway steps can be automatically adjusted according to the height difference between the bow and stern of the gangway.

[0045] 2. Simple structure and easy to install: The structure is simple. The extension and retraction of the telescopic steps and the change of step height do not require hydraulic or motor drive, and no electricity is required. This makes it easy to install and maintain, reducing the cost of use and maintenance.

[0046] 3. Convenient and safe passage: No matter how the gangway frame swings up and down, the gangway steps remain horizontal, and there will be no excessive gaps between the steps. The step guards can prevent feet from getting stuck in the steps and getting injured, thus maximizing the convenience and safety of personnel during passage.

[0047] 4. The middle step is designed as an inverted triangle, and the step guard plate is curved. When the ladder rotates, the curved surface keeps in contact with the edge of the leading step. When the gangway rotates, the curved surface can prevent feet from being stuck in the step and getting injured.

[0048] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A ship's gangway, characterized in that: The ship's gangway includes: The first step (1) is set on the ship's deck; Tail steps (2) are set up on the shore; The middle connecting ladder is connected to the first step (1) and the last step (2) at both ends respectively, and the middle connecting ladder can rotate around the connection point; The middle steps (5) are evenly spaced on the intermediate connecting ladder; The intermediate connecting ladder includes: The upper ladder frame (3) is connected to the top of the first step (1) and the last step (2) via step shafts (6); The lower ladder frame (4) is connected to the bottom of the first step (1) and the last step (2) via the step shaft (6); The first step (1), the last step (2), the upper ladder (3), and the lower ladder (4) form a rotatable parallelogram structure; The middle step (5) has an inverted triangular structure; The middle step (5) includes a step panel (7), a step guard plate (8), and a middle step plate (9). The step panel (7) is the upper surface of the middle step (5) and the step panel (7) is always horizontal. The step guard plate (8) is the side panel of the middle step (5). The middle step plate (9) is located inside the middle step (5) and vertically connects the center of the step panel (7) and the bottom of the middle step (5), dividing the middle step (5) into left and right sections. The step shaft (6) is connected to both ends of the middle step plate (9).

2. A ship gangway as described in claim 1, characterized in that: The top of the middle step (5) is connected to the upper ladder frame (3) via a step shaft (6), and the bottom of the middle step (5) is connected to the lower ladder frame (4) via a step shaft (6).

3. A ship gangway as described in claim 2, characterized in that: The step guard plate (8) is configured as a curved panel.

4. A marine gangway as described in claim 3, characterized in that: The first step (1) and the last step (2) are provided with half-side middle steps.

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