Marine gangway ladder

Abstract

The invention discloses a ship gangway ladder which comprises a first step arranged on a ship deck. And the tail step is erected on the shore. The two ends of the middle connecting ladder are connected with the head step and the tail step respectively, and the middle connecting ladder can rotate around a connecting point. And the middle steps are arranged on the middle connecting ladder at equal intervals. The middle step is designed to be in the inverted triangle shape, the step protection plate is the curved surface, when the ladder rotates, the curved surface and the edge of the collar tightening step are kept in an attached state, and when the gangway ladder rotates, the curved surface can prevent a foot from stretching into the step to be pinched and injured.

Description

Technical Field

[0001] The invention belongs to the technical field of ship construction, and in particular relates to a ship gangway. Background Art

[0002] When a ship docks at a pier, a ship's gangway is a key passage for people and materials to get on and off the ship. Existing simple ship gangways are difficult to flexibly adapt to the ship's tides, water level changes, and the height differences caused by docking at different piers. Traditional gangways that rely on hydraulic or motor drives have problems such as complex equipment and high maintenance costs. For example, they are prone to malfunction in a humid and salty marine environment for a long time. For some gangways with simple structures, the tread plane becomes an inclined plane as the ladder swings up and down, posing a safety hazard during use. Therefore, it is very necessary to develop an inclined ladder whose steps can always remain horizontal. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a ship gangway ladder that can swing up and down. During the up and down swinging process of the gangway ladder, the step plane remains horizontal and the step height is variable.

[0004] The object of the present invention is achieved through the following technical solutions: a ship gangway, comprising:

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

[0006] The tail step is set up on the shore.

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

[0008] Middle steps are set at equal intervals on the middle connecting ladder.

[0009] Preferably, the intermediate connecting ladder comprises:

[0010] Upper ladder frame, connecting the top of the first step and the top of the last step through the step shaft;

[0011] The lower ladder frame is connected to the bottom of the first step and the last step through the step shaft;

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

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

[0014] Preferably, the middle step is an inverted triangle structure.

[0015] Preferably, the middle step includes a step panel, a step guard plate and a step middle plate, wherein the step panel is the upper surface of the middle step, the step panel always remains horizontal, the step guard plate is the side panel of the middle step, the step middle plate is arranged inside the middle step, vertically connecting the center of the step panel and the bottom of the middle step, dividing the middle step into two sections on the left and right, and the step shaft is connected to the two ends of the step middle plate.

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

[0017] Preferably, half middle steps are provided on the first step and the last step.

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

[0019] The present invention provides a swingable ship gangway ladder. During the swinging process, the steps remain horizontal and their heights are adjustable. Utilizing the parallelogram principle, the present invention ensures that the steps remain horizontal even when there is a height difference between the end of the ladder. The step heights are adjusted as the ladder swings up and down. Protective plates are installed under the step panels to prevent toes from being caught between the steps when the height changes, ensuring safe and convenient boarding and disembarking of personnel and supplies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a side view of a ship's gangway ladder when it is horizontally installed in an embodiment of the present invention;

[0021] Figure 2 A top view of a ship's gangway ladder in a horizontal arrangement according to an embodiment of the present invention;

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

[0023] Figure 4 This is a top view of a ship's gangway ladder installed at 20 degrees according to an embodiment of the present invention;

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

[0025] Figure 6 This is a top view of the marine gangway-55 during installation in an embodiment of the present invention.

[0026] In the figure, 1 is the first step; 2 is the last step; 3 is the upper ladder frame; 4 is the lower ladder frame; 5 is the middle step; 6 is the step shaft; 7 is the step panel; 8 is the step guard plate; 9 is the step middle plate. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments 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 ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] The technical solution of the present invention provides a marine gangway, comprising:

[0029] The first step 1 is set on the deck of the ship;

[0030] Tail step 2, set up on the shore;

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

[0032] The middle steps 5 are arranged at equal intervals on the middle connecting ladder.

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

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

[0036] The first step 1, the last step 2, the upper ladder frame 3 and the lower ladder frame 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 through a step shaft 6 , and the bottom of the middle step 5 is connected to the lower ladder frame 4 through a step shaft 6 .

[0038] In one embodiment of the present invention, the middle step 5 is an inverted triangle 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 step middle plate 9, wherein the step panel 7 is the upper surface of the middle step 5, the step panel 7 always remains horizontal, the step guard plate 8 is the side panel of the middle step 5, the step middle plate 9 is arranged inside the middle step 5, vertically connecting the center of the step panel 7 and the bottom of the middle step 5, dividing the middle step 5 into two sections on the left and right, and the step shaft 7 is connected to both ends of the step middle plate 9.

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

[0041] In one embodiment of the present invention, half 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, a ship's gangway ladder includes a head 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 head step 1, the stern step 2, the upper ladder frame 3, the lower ladder frame 4, and the middle steps 5 are connected by the step shafts 6 to form a rotatable parallelogram. The head step 1 is fixed to the ship's deck, and the stern step 2 is resting on the shore. When the ship rises and falls, the head step 1 rises and falls. Due to the principle of the parallelogram, the upper ladder frame 3, the lower ladder frame 4, and the middle steps 5 also swing in parallel, thereby ensuring that the steps remain horizontal. The middle step 5 includes a step panel 7, a step guard plate 8, a step middle plate 9, and two step shafts 6. The step guard plate 8 is a curved panel, and the middle step 5 has an inverted triangle shape when viewed from the side. The steps are assembled with 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 8 is a curved surface. When the ladder rotates, this curved surface maintains contact with the edge of the adjacent step. When the gangway ladder rotates, this curved surface prevents the foot from being pinched by the step.

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

[0044] 1. Strong environmental adaptability: The ship's gangway can flexibly adapt to the height difference caused by tides, water level changes and docking at different docks. The height of the gangway steps can be automatically adjusted according to the height difference between the front and rear of the gangway.

[0045] 2. Simple structure and easy to set up: The structure is simple, and the telescopic steps do not require hydraulic and motor drives for extension and extension, and step height changes. No electricity is required, which makes it easy to set up and maintain, reducing the cost of use and maintenance.

[0046] 3. Convenient and safe passage: No matter how the gangway ladder frame swings up and down, the gangway steps can remain level, and there will be no large gaps between the steps. The step guards can prevent feet from being pinched by the steps, thus ensuring the convenience and safety of personnel during passage to the greatest extent.

[0047] 4. The middle step is designed to be an inverted triangle, and the step guard is a curved surface. When the ladder rotates, the curved surface keeps in contact with the edge of the tight-collar step. When the gangway ladder rotates, the curved surface can prevent the foot from being pinched by the step.

[0048] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A marine gangway, characterized in that: The marine gangway comprises: A first step (1), provided on the deck of the vessel; Tail step (2), set up on the shore; An intermediate connecting ladder, with both ends respectively connected to the first step (1) and the last step (2), and the intermediate connecting ladder can rotate around the connection point; Middle steps (5) are arranged at equal intervals on the middle connecting ladder.

2. A marine gangway according to claim 1, characterized in that: The intermediate connecting ladder comprises: An upper ladder frame (3) is connected to the top of the first step (1) and the top of the last step (2) via a step shaft (6); A lower ladder frame (4) is connected to the bottom of the first step (1) and the bottom of the last step (2) via a step shaft (6); The first step (1), the last step (2), the upper ladder frame (3) and the lower ladder frame (4) form a rotatable parallelogram structure.

3. A marine gangway according to claim 2, 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).

4. A marine gangway according to claim 1, characterized in that: The middle step (5) is an inverted triangle structure.

5. A marine gangway according to claim 4, characterized in that: The middle step (5) comprises a step panel (7), a step guard plate (8) and a step middle plate (9), wherein the step panel (7) is the upper surface of the middle step (5), the step panel (7) is always kept horizontal, the step guard plate (8) is the side panel of the middle step (5), the step middle plate (9) is arranged inside the middle step (5), vertically connects the center of the step panel (7) and the bottom of the middle step (5), and divides the middle step (5) into two sections, the left and right sections, and the step shaft (7) is connected to the two ends of the step middle plate (9).

6. A marine gangway according to claim 5, characterized in that: The step guard plate (8) is configured as a curved plate.

7. A marine gangway according to claim 6, characterized in that: The first step (1) and the last step (2) are provided with half middle steps.

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