Marine metal ladder

Abstract

The utility model discloses a marine metal ladder in the technical field of metal ladders, which comprises an upper ladder assembly and a lower ladder assembly, the upper ladder assembly is rotatably connected with the lower ladder assembly through a hinge, the lower part of the lower ladder assembly is connected with a plurality of telescopic rods, the upper ladder assembly is fixedly connected with a first ladder plate, and the lower ladder assembly is fixedly connected with a second ladder plate. The lower portion of the first ladder plate is fixedly connected with a double-end waterproof motor through a connecting bent rod. According to the metal ladder, the structural form that the upper ladder assembly and the lower ladder assembly are rotationally connected through the hinge is adopted, a linkage driving system composed of a double-end waterproof motor, a conduction shaft and a rotating shaft is combined, the angle rotation function of a ladder body is achieved, a plurality of telescopic rods are arranged at the bottom of the lower ladder assembly, and second ladder plates are fixedly connected to the telescopic rods; the height adjustability and the ground adaptation capability of the ladder are further enhanced, and the anti-skid performance and the overall stability of the ladder are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of metal ladder technology, and in particular to a marine metal ladder. Background Technology

[0002] With the rapid development of the shipbuilding industry, the design and optimization of marine safety facilities have gradually become a crucial aspect of ensuring the safety of personnel. Metal ladders, as indispensable auxiliary equipment for shipboard access and maintenance, directly impact operational efficiency and personnel safety due to their structural stability, adaptability, and safety. In recent years, traditional fixed or folding marine metal ladders have struggled to meet the demands of the complex and ever-changing marine environment, particularly in scenarios with varying deck heights and adverse weather conditions. Traditional ladders suffer from inconvenient adjustments and unstable installations. Therefore, the design of novel metal ladders with adjustable height, adaptive angles, and easy storage and deployment has become a research hotspot. Some existing technologies enhance the flexibility and applicability of ladders by introducing hydraulic devices, telescopic structures, or hinge mechanisms, and utilize high-strength aluminum alloys or stainless steel to improve corrosion resistance.

[0003] However, most improvements in existing technologies still have significant shortcomings. First, while many metal ladders possess a degree of adjustability, the adjustment process often relies on manual operation or external power devices, lacking automatic adjustment capabilities, which hinders rapid deployment in emergencies. Furthermore, some metal ladders do not adequately consider safety factors such as anti-slip and waterproofing; the surface treatment of the ladder plates is rough, lacking effective anti-slip structures, increasing the risk of slipping. Moreover, the hinge structures in existing technologies are mostly simple rotating connections, failing to achieve dynamic adjustment and locking functions between ladder sections, limiting the application of the ladders. Addressing these issues, how to develop a marine metal ladder capable of automatically adjusting its posture under various working conditions, possessing good stability and safety, has become a pressing technical challenge. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a marine metal ladder, comprising an upper ladder frame and a lower ladder frame, which are rotatably connected by a hinge. Several telescopic rods are connected to the lower part of the lower ladder frame. A first ladder plate is fixedly connected to the upper ladder frame. A double-headed waterproof motor is fixedly connected to the lower part of the first ladder plate via a connecting bent rod. The double-headed waterproof motor is driven by a transmission shaft. The hinge includes an arc-shaped plate, on which a first connecting plate and a second connecting plate are fixedly connected. A first rotating shaft is rotatably connected to the second connecting plate. The end of the transmission shaft is fixedly connected to the first rotating shaft.

[0005] A second rotating shaft is rotatably connected to the second connecting plate, and the second rotating shaft is fixedly connected to the lower ladder frame.

[0006] The first rotating shaft is fixedly connected to the upper ladder frame, and a second ladder plate is fixedly connected to the telescopic rod.

[0007] The upper ladder frame is fixedly connected to a mounting sleeve and a handrail, and a mounting plate is welded to the lower part of the mounting sleeve.

[0008] A support rod is fixedly connected to the rear of the upper ladder, and a rubber suction cup is fixedly connected to the end of the support rod. A snap-fit ​​bracket is fixedly connected to the front of the upper ladder.

[0009] The dual-head waterproof motor is connected to a winding wheel, and a steel cable is connected between the second ladder plate and the winding wheel. The first ladder plate is provided with anti-slip strips.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the metal ladder adopts a structure in which the upper ladder frame and the lower ladder frame are connected by hinges, and combined with a linkage drive system consisting of a double-headed waterproof motor, a transmission shaft, and a rotating shaft, the ladder body angle can be rotated.

[0011] The hinge structure includes an arc-shaped plate and first and second connecting plates, which are connected to the transmission shaft via a first pivot to achieve dynamic response and stable support for changes in the angle between the ladder sections. This structure not only enhances the overall rigidity and connection strength of the ladder, but also effectively avoids the jamming or instability problems caused by uneven force distribution in traditional hinge structures, thus improving the smoothness and reliability during use.

[0012] Several telescopic rods are installed at the bottom of the lower ladder frame, and a second ladder board is fixedly connected to the telescopic rods, further enhancing the height adjustability and adaptability of the ladder to the ground. Together with the rubber suction cups and support rods installed at the rear of the upper ladder frame, the entire ladder can firmly adhere to the surface during use, greatly improving the ladder's anti-slip performance and overall stability, and reducing the risk of accidental slippage or tipping. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1 This is a front structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0016] Figure 3This is a schematic diagram of the structure after rotating 90 degrees in this utility model.

[0017] Figure 4 This is a schematic diagram of the folded back structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the folded front structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the hinge structure in this utility model.

[0020] In the diagram: 1. Handrail; 2. Mounting sleeve; 3. Mounting plate; 4. Upper ladder frame; 5. First ladder plate; 51. Anti-slip strip; 6. Clip-on bracket; 7. Rubber suction cup; 8. Conductive shaft; 9. Hinge; 91. Curved plate; 92. First connecting plate; 93. Second connecting plate; 94. First pivot; 95. Second pivot; 10. Lower ladder frame; 11. Telescopic rod; 12. Support rod; 13. Second ladder plate; 14. Winding reel; 15. Connecting bend rod; 16. Double-headed waterproof motor; 17. Steel cable. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-6 The illustrated marine metal ladder includes an upper ladder frame 4 and a lower ladder frame 10. The upper ladder frame 4 and the lower ladder frame 10 are rotatably connected by a hinge 9, so they can be folded and stored after rotation to prevent the metal ladder from being submerged in water. The lower part of the lower ladder frame 10 is connected to several telescopic rods 11, which can extend the overall length of the ladder for easy storage.

[0023] A first ladder plate 5 is fixedly connected to the upper ladder frame 4. A double-headed waterproof motor 16 is fixedly connected to the lower part of the first ladder plate 5 through a connecting bent rod 15. The double-headed waterproof motor 16 is connected to a transmission shaft 8. Gears are fixedly connected to the transmission shaft 8 and the double-headed waterproof motor 16 respectively, and the transmission is connected through the gears.

[0024] The hinge 9 includes an arc-shaped plate 91, on which two first connecting plates 92 and two second connecting plates 93 are fixedly connected. A first rotating shaft 94 is rotatably connected to the second connecting plate 93. The end of the transmission shaft 8 is fixedly connected to the first rotating shaft 94. A second rotating shaft 95 is rotatably connected to the second connecting plate 93. The second rotating shaft 95 is fixedly connected to the lower ladder frame 10. The first rotating shaft 94 is fixedly connected to the upper ladder frame 4. Therefore, when the double-headed waterproof motor 16 rotates, it can drive the lower ladder frame 10 to rotate.

[0025] A second ladder plate 13 is fixedly connected to the telescopic rod 11, and an installation sleeve 2 and a handrail 1 are fixedly connected to the upper ladder frame 4. An installation plate 3 is welded to the lower part of the installation sleeve 2, and the installation plate 3 is connected to the deck of the ship by screws.

[0026] The upper ladder 4 is fixedly connected to a support rod 12 at the rear, and a rubber suction cup 7 is fixedly connected to the end of the support rod 12. The rubber suction cup 7 can play a role in fixing and shock absorption. The upper ladder 4 is fixedly connected to a snap-fit ​​bracket 6 at the front, which can be connected to the lower ladder 10 after folding.

[0027] The double-headed waterproof motor 16 is connected to a winding wheel 14. A steel cable 17 is connected between the second ladder plate 13 and the winding wheel 14. The winding wheel 14 can drive the telescopic rod 11 to retract through the steel cable 17 and drive the lower ladder frame 10 to fold. The first ladder plate 5 is provided with anti-slip strips 51 to prevent slipping.

[0028] Working Principle: This metal ladder mainly consists of an upper ladder frame 4 and a lower ladder frame 10, which are rotatably connected by a hinge 9. The hinge 9 includes an arc-shaped plate 91, a first connecting plate 92, and a second connecting plate 93. The second connecting plate 93 is equipped with a first rotating shaft 94 and a second rotating shaft 95. The first rotating shaft 94 is fixedly connected to the end of the transmission shaft 8, while the second rotating shaft 95 is fixedly connected to the lower ladder frame 10. At the same time, the first rotating shaft 94 is also fixedly connected to the upper ladder frame 4, thus forming a stable linkage structure. When the dual-head waterproof motor 16 is started, its output power is transmitted to the transmission shaft 8 through the gear set, which in turn drives the first rotating shaft 94 to rotate. This drives the entire lower ladder frame 10 to perform angle adjustment or folding movements around the second rotating shaft 95, realizing automatic adjustment of the ladder's posture.

[0029] Several telescopic rods 11 are connected to the bottom of the lower ladder frame 10, allowing for length adjustment according to the actual climbing height. A second ladder board 13 is fixedly connected to the top of each telescopic rod 11 and connected to a winding reel 14 via a steel cable 17. A dual-head waterproof motor 16 also drives the winding reel 14 to rotate, controlling the extension and retraction of the telescopic rods 11 by winding and unwinding the steel cable 17. This enables the lower ladder frame 10 to automatically deploy or retract, improving operational convenience and emergency response capabilities.

[0030] To ensure the stability of the overall structure, a support rod 12 is provided at the rear of the upper ladder frame 4, with a rubber suction cup 7 installed at its end. This provides suction and shock absorption when the ladder is placed on a deck or other smooth surface, preventing slippage or vibration that could cause safety hazards. A locking bracket 6 is provided at the front to limit and fix the lower ladder frame 10 in the folded state, enhancing overall stability during storage. In addition, anti-slip strips 51 are provided on the first ladder board 5 to increase foot friction and ensure anti-slip safety during the ascent and descent.

[0031] The metal ladder is fixedly connected to the ship's deck via mounting sleeve 2 and mounting plate 3 welded below it, while handrail 1 provides additional safety support for the user. This structure not only meets the stability, safety, and adaptability requirements of marine ladders in complex environments, but also achieves automated operation and rapid deployment and retrieval functions, showing promising prospects for engineering applications.

[0032] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A marine metal ladder, comprising an upper ladder frame (4) and a lower ladder frame (10), characterized in that: The upper ladder (4) and the lower ladder (10) are rotatably connected by a hinge (9). The lower part of the lower ladder (10) is connected to several telescopic rods (11). The upper ladder (4) is fixedly connected to a first ladder plate (5). The lower part of the first ladder plate (5) is fixedly connected to a double-headed waterproof motor (16) through a connecting bent rod (15). The double-headed waterproof motor (16) is driven by a transmission shaft (8). The hinge (9) includes an arc plate (91). The arc plate (91) is fixedly connected to a first connecting plate (92) and a second connecting plate (93). The second connecting plate (93) is rotatably connected to a first rotating shaft (94). The end of the transmission shaft (8) is fixedly connected to the first rotating shaft (94).

2. A marine metal ladder according to claim 1, characterized in that: A second rotating shaft (95) is rotatably connected to the second connecting plate (93), and the second rotating shaft (95) is fixedly connected to the lower ladder frame (10).

3. A marine metal ladder according to claim 1, characterized in that: The first rotating shaft (94) is fixedly connected to the upper ladder frame (4), and the second ladder plate (13) is fixedly connected to the telescopic rod (11).

4. A marine metal ladder according to claim 1, characterized in that: The upper ladder frame (4) is fixedly connected with a mounting sleeve (2) and a handrail (1), and a mounting plate (3) is welded to the lower part of the mounting sleeve (2).

5. A marine metal ladder according to claim 1, characterized in that: The upper ladder (4) is fixedly connected to a support rod (12) at the rear, and a rubber suction cup (7) is fixedly connected to the end of the support rod (12). The upper ladder (4) is fixedly connected to a snap-fit ​​bracket (6) at the front.

6. A marine metal ladder according to claim 3, characterized in that: The double-headed waterproof motor (16) is connected to a winding wheel (14) for transmission. A steel cable (17) is connected between the second ladder plate (13) and the winding wheel (14). The first ladder plate (5) is provided with anti-slip strips (51).

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