Stepping gangway ladder convenient to fold and unfold

Abstract

The utility model belongs to the technical field of gangway ladders, and particularly discloses a step gangway ladder convenient to fold and unfold, which comprises a base, a support is arranged at the top of the base, a rotating shaft is rotatably connected to the inner surface of the support, a connecting frame is fixedly connected to one end, far away from the support, of the rotating shaft, and a gangway ladder frame is fixedly connected to the outer surface of the connecting frame. A step table is arranged on the inner side of the gangway ladder frame, a fixing rod is fixedly connected to the inner side of the base, and a retracting and releasing mechanism is arranged on the base. According to the step gangway ladder convenient to fold and unfold, the gangway ladder can be converted into a folded state from a using state through the folding and unfolding mechanism, when the gangway ladder assembly is in a horizontal state, the form of the gangway ladder assembly is closer to a flat plate or a rectangle, compared with an inclined state, the storage space can be fully utilized, and in other words, in the horizontal state, the shape of the gangway ladder assembly is more regular; and a protruding part or a gap does not appear, so that the accommodation ladder frame can fully utilize the storage space, and the waste of the space is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of gangway ladders, and in particular to a step gangway ladder that is easy to retract. Background Art

[0002] A gangway is a device used to board a ship. The gangway is usually made of metal materials, such as aluminum alloy or stainless steel, to ensure that it has sufficient strength and durability to withstand the weight of the ship and the dock as well as the load of passengers or crew.

[0003] Most of the existing step gangways are of integral structure, which takes up a lot of space during storage and transportation and is inconvenient to be folded and deployed. For the limited space of ships or docks, the integral step gangway usually takes up a large space when folded and deployed, which easily makes storage and transportation inconvenient and affects other operations. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the shortcomings existing in the background technology, and to provide a step ladder that is easy to retract to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the utility model provides a step ladder that is easy to retract, including a base, a support is provided on the top of the base, the inner surface of the support is rotatably connected to a rotating shaft, the end of the rotating shaft away from the support is fixedly connected to a connecting frame, the outer surface of the connecting frame is fixedly connected to a gangway frame, a step platform is provided on the inner side of the gangway frame, a fixing rod is fixedly connected to the inner side of the base, a retracting and extending mechanism is provided on the base, and the outer surface of the connecting frame is provided with a snap-on fixing mechanism.

[0006] Preferably, the retractable mechanism comprises a lower rotating plate rotatably connected to the outer surface of the fixed rod, and an electric push rod is fixedly installed on the lower rotating plate. The gangway ladder can be retracted or deployed for use through the retractable mechanism, and the occupied space can be effectively reduced after being retracted.

[0007] Preferably, an output end of the electric push rod is fixedly connected with an upper rotating plate, and an outer surface of the connecting frame is fixedly connected with a frame plate.

[0008] Preferably, a plate shaft is fixedly penetrated through the inner side of the frame plate, and the outer surface of the plate shaft is rotatably connected to the inner surface of the upper rotating plate.

[0009] Preferably, the snap-on retaining mechanism comprises a steel wire rope fixedly connected to the connecting frame, and a limit hook is provided at one end of the steel wire rope away from the connecting frame. The snap-on retaining mechanism can keep the gangway frame in a relatively stable state after being stored, thereby reducing the probability of its displacement.

[0010] Preferably, a through shaft is fixedly provided on the inner side of the limiting hook, and a shifting frame is rotatably connected to the outer surface of the through shaft. A torsion spring is provided on the outer surface of the through shaft, and one end of the torsion spring is connected to the through shaft, and the other end is connected to the inner side of the shifting frame.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The step ladder that is easy to retract can transform the ladder from a use state to a storage state through a retracting mechanism. When the ladder frame is in a horizontal state, its shape is closer to a flat plate or a rectangle, and compared with an inclined state, the storage space can be fully utilized. That is, in the horizontal state, the shape of the ladder frame is more regular, and there will be no protruding parts or gaps, so that the ladder frame can fully utilize the storage space and reduce space waste.

[0013] 2. The step ladder, which is easy to retract, is fixed by means of steel wire ropes, hooks, limit hooks and other devices, so that the entire ladder is in a relatively stable state, effectively reducing the shaking and instability that may occur during the use of the ladder, and improving the safety and comfort of boarding personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the structure on the back of this application;

[0016] Figure 3 This is a schematic diagram of the surface structure of the electric push rod in this application;

[0017] Figure 4 This is a schematic diagram of the surface structure of the limit hook in this application;

[0018] Figure 5 For this application Figure 4 Enlarged view of point a in the middle.

[0019] Among them: 1. Base; 2. Support; 3. Rotating shaft; 4. Connecting frame; 5. Gangway frame; 6. Step platform; 7. Fixed rod; 8. Lower rotating plate; 9. Electric push rod; 10. Upper rotating plate; 11. Plate shaft; 12. Frame plate; 13. Wire rope; 14. Limiting hook; 15. Through shaft; 16. Positioning frame; 17. Torsion spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] See also Figure 1-5 A step ladder that is easy to retract comprises a base 1, a support 2 is arranged on the top of the base 1, the inner surface of the support 2 is rotatably connected with a rotating shaft 3, the end of the rotating shaft 3 away from the support 2 is fixedly connected with a connecting frame 4, the outer surface of the connecting frame 4 is fixedly connected with a gangway frame 5, the inner side of the gangway frame 5 is provided with a step platform 6, the inner side of the base 1 is fixedly connected with a fixing rod 7, a retracting mechanism is arranged on the base 1, and the outer surface of the connecting frame 4 is provided with a snap-on fixing mechanism.

[0022] Through the above technical solution, the device can place the gangway frame 5 at a suitable angle through the retracting mechanism during use so as to adapt to the corresponding ship. The angle between the gangway frame 5 and the step platform 6 can be adjusted when not in use, so that the gangway frame 5 is in a relatively horizontal state, thereby effectively occupying the space of the gangway.

[0023] Specifically, the retracting and extending mechanism includes a lower rotating plate 8 rotatably connected to the outer surface of the fixed rod 7 , and an electric push rod 9 is fixedly mounted on the lower rotating plate 8 .

[0024] Through the above technical solution, the purpose of designing the lower rotating plate 8 is to allow the electric push rod 9 to adapt to the fine adjustment of its own angle during operation.

[0025] Specifically, an upper rotating plate 10 is fixedly connected to the output end of the electric push rod 9 , and a frame plate 12 is fixedly connected to the outer surface of the connecting frame 4 .

[0026] Through the above technical solution, when the electric push rod 9 pushes the plate shaft 11 through the upper rotating plate 10 , the upper rotating plate 10 will rotate along the plate shaft 11 at a certain angle.

[0027] Specifically, a plate shaft 11 is fixedly penetrated through the inner side of the frame plate 12 , and the outer surface of the plate shaft 11 is rotatably connected to the inner surface of the upper rotating plate 10 .

[0028] Through the above technical solution, when the upper rotating plate 10 drives the frame plate 12 through the plate shaft 11, the connecting frame 4 will be pushed and pulled synchronously.

[0029] Specifically, the buckle retaining mechanism includes a steel wire rope 13 fixedly connected to the connecting frame 4 , and a limit hook 14 is provided at one end of the steel wire rope 13 away from the connecting frame 4 .

[0030] Through the above technical solution, when the limit hook 14 hooks the fixing rod 7, the connecting frame 4 can be kept in a relatively stable state through the steel wire rope 13, thereby reducing the shaking of the gangway ladder.

[0031] Specifically, a through shaft 15 is fixedly penetrated through the inner side of the limiting hook 14 , a shifting frame 16 is rotatably connected to the outer surface of the through shaft 15 , and a torsion spring 17 is arranged on the outer surface of the through shaft 15 .

[0032] Through the above technical solution, under the elastic action of the torsion spring 17, the bottom end of the shifting frame 16 will always be against the inner side of the limiting hook 14, so as to avoid being hooked and separated from the fixing rod 7.

[0033] Working principle: When the step ladder is in use, the upper rotating plate 10 can be pushed by the electric push rod 9, so that the upper rotating plate 10 can rotate along the plate axis 11, and the connecting frame 4 can be pushed and pulled by the frame plate 12, that is, the gangway frame 5 is pushed and pulled synchronously, and the rotating shaft 3 can rotate along the inner surface of the support 2 to adjust the inclination angle of the gangway frame 5 to adapt to the corresponding ship, so that the boarding personnel can step on the step platform 6 to board the ship smoothly. In this process, the electric push rod 9 itself will deflect at a certain angle, so the lower rotating plate 8 will rotate at a certain angle along the fixed rod 7, and when the gangway ladder is retracted, the electric push rod 9 can be used to pull back the gangway frame 5, so that the rotating shaft 3 rotates on the inner surface of the support 2, and the gangway frame 5 is gradually in the water. When the gangway frame 5 is in a flat state and is fully retracted and in a horizontal state, its overall height will be minimized and perpendicular to the storage space. This horizontal storage method can minimize the vertical space required for the gangway when stored, making the space occupied by the gangway more compact, thereby effectively reducing the additional large space required for the gangway frame 5 after being unfolded. The limiting hook 14 is hooked on the fixing rod 7 by the steel wire rope 13. Under the elastic action of the torsion spring 17, the bottom end of the shifting frame 16 can always be against the inner side of the limiting hook 14, so that the fixing rod 7 will not be separated from the limiting hook 14 after being hooked thereon. The steel wire rope 13 pulls the connecting frame 4 so that the entire gangway is in a relatively stable state, effectively reducing the unstable conditions such as shaking of the gangway.

[0034] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A step ladder that is easy to retract, comprising a base (1), characterized in that: A support (2) is arranged on the top of the base (1), the inner surface of the support (2) is rotatably connected to a rotating shaft (3), the end of the rotating shaft (3) away from the support (2) is fixedly connected to a connecting frame (4), the outer surface of the connecting frame (4) is fixedly connected to a gangway frame (5), the inner side of the gangway frame (5) is provided with a stepping platform (6), the inner side of the base (1) is fixedly connected to a fixing rod (7), the base (1) is provided with a retracting and extending mechanism, and the outer surface of the connecting frame (4) is provided with a snap-on fixing mechanism.

2. The retractable step ladder according to claim 1, characterized in that: The retractable mechanism comprises a lower rotating plate (8) rotatably connected to the outer surface of a fixed rod (7), and an electric push rod (9) is fixedly mounted on the lower rotating plate (8).

3. The retractable step ladder according to claim 2, characterized in that: The output end of the electric push rod (9) is fixedly connected to an upper rotating plate (10), and the outer surface of the connecting frame (4) is fixedly connected to a frame plate (12).

4. The retractable step ladder according to claim 3, characterized in that: A plate shaft (11) is fixedly penetrated through the inner side of the frame plate (12), and the outer surface of the plate shaft (11) is rotatably connected to the inner surface of the upper rotating plate (10).

5. The retractable step ladder according to claim 1, characterized in that: The buckle retaining mechanism comprises a steel wire rope (13) fixedly connected to the connecting frame (4), and a limiting hook (14) is provided at one end of the steel wire rope (13) away from the connecting frame (4).

6. The retractable step ladder according to claim 5, characterized in that: A through shaft (15) is fixedly penetrated on the inner side of the limiting hook (14), a shifting frame (16) is rotatably connected to the outer surface of the through shaft (15), and a torsion spring (17) is arranged on the outer surface of the through shaft (15).

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