Hidden gangway ladder pedal, boarding gangway ladder and use method

Abstract

The invention relates to a concealed gangway ladder pedal, a boarding gangway ladder and a using method, the gangway ladder pedal comprises a folding pedal, a telescopic mechanism and a handrail module, the telescopic mechanism is used for driving the folding pedal to be folded or unfolded, the handrail module is close to the outer side of the folding pedal, the handrail module comprises a supporting piece, a gangway ladder handrail and a driving mechanism, and the supporting piece is connected with the telescopic mechanism; the driving mechanism is used for driving the gangway ladder handrail to be unfolded in a deflection mode and locked relative to the supporting piece in the direction parallel to the telescopic direction or driving the gangway ladder handrail to be folded relative to the supporting piece in a deflection mode, the boarding gangway ladder comprises a plurality of gangway ladder pedals distributed at intervals in the inclined direction, and the unfolded gangway ladder handrail can be in lap joint with the handrail module of the adjacent hidden gangway ladder pedal. When the gangway ladder is used, the gangway ladder pedals are controlled to be released or recycled in a delayed mode, hiding and simple and convenient installation of the gangway ladder pedals can be achieved, the protection performance is good, the gangway ladder is easy and fast to release and recycle, multiple persons can pass through the gangway ladder, and shaking is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of boarding ladders, and in particular relates to a concealed ladder step, a boarding ladder and a use method thereof. Background Art

[0002] Currently, outboard pilot ladders require a crane for lowering and fixing. However, these ladders are long, occupy a large space, require extensive preparation for installation and boarding, and can easily wobble when multiple people are using them, compromising boarding efficiency and safety. Traditional gangways typically feature truss or beam structures, with the steps welded or bolted directly to the ladder frame. Fixed handrails are provided on either side of the ladder, with one end fixed to the hull and the other supported on the dock floor by support legs. Alternatively, the ladder is suspended from the hull via a top boom, cable, or chain, with the bottom contacting the dock via guide wheels or struts. While more convenient for multiple people to board, these ladders often present issues such as wasted deck space due to their long-term exposure, impacting the ship's streamlined shape and navigational performance, requiring high maintenance frequency and significant corrosion protection costs. Therefore, with the advancement of intelligent ship design, the development of a concealed boarding gangway and its use is needed to conserve ship space, improve deck utilization, enhance the ship's appearance and navigational safety, and facilitate smooth passage for multiple people, thereby improving boarding efficiency and safety.

[0003] Existing concealed boarding ladders adopt a folding or embedded design to achieve the "concealed" function. In terms of structural composition, the ladder is mainly composed of a step panel, a support frame, a folding or telescopic mechanism, and connecting parts. However, there are still the following problems:

[0004] (1) Large storage volume: To achieve concealed function, the gangway ladder adopts an overall folding or telescopic structure. However, when the gangway ladder is long, these structures cannot be completely compacted together when stored, and it is not easy to achieve high compression when stored, resulting in a large storage volume, which affects the concealed installation and ship structure. Even if a lightweight design is adopted, it is difficult to significantly reduce the volume like flexible materials, which will also affect the strength and durability of the gangway ladder.

[0005] (2) It is impossible to form a continuous railing protection structure: When not in use, the concealed gangway ladder needs to be hidden inside the hull or in a specific storage space. In order to be able to be stored smoothly, the railing will adopt a segmented design, which makes it difficult to form a continuous and complete protection structure like the traditional non-concealed gangway ladder when in use. In a limited space, it is necessary to meet the bearing capacity of the gangway step and take into account the setting of the railing, which increases the difficulty of design. If a continuous railing is set, it will affect the overall strength of the gangway ladder or lead to insufficient storage space.

[0006] (3) The release and recovery of the gangway are complex and slow: Concealed gangways are usually equipped with more complex mechanical transmissions, and the complete release and recovery of the gangway is completed by the coordinated work of various mechanical or drive structures, which increases the complexity and time cost of the operation. At the same time, the hidden position of the gangway may be interrelated with other structures of the hull. When releasing and recovering, it is necessary to consider the interference with the surrounding environment and design a complex motion trajectory, which makes the release and recovery process more complex and slow. Summary of the Invention

[0007] The present invention aims to solve at least one of the above-mentioned technical problems to a certain extent. The present invention provides a concealed gangway step, a boarding ladder and a method for use, which can achieve the concealment and simple installation of the gangway step, have good protective performance, and the release and recovery of the gangway are simple and quick, and can accommodate multiple people at the same time without shaking problems.

[0008] The technical solution adopted by the present invention to solve its technical problem is:

[0009] A first aspect of the present invention is to provide a concealed gangway step, comprising a folding step, a telescopic mechanism and a railing module, wherein the telescopic mechanism is used to drive the folding step to fold or unfold and drive the railing module to move back and forth, and the railing module is close to the outside of the folding step. The railing module comprises a support, a gangway handrail and a driving mechanism, wherein the support is connected to the telescopic mechanism, and the driving mechanism is used to drive the gangway handrail to deflect and unfold relative to the support and lock it in a direction parallel to the telescopic direction, or to drive the gangway handrail to deflect and retract relative to the support.

[0010] In order to further simplify the folding pedal and drive structure, reduce the storage volume, and maintain structural strength, in the preferred technical solution, the folding pedal includes at least two pedal panels hinged to each other, the telescopic mechanism includes a positioning member and a telescopic member that can be telescoped relative to the positioning member, and the two ends of the folding pedal are respectively hinged to the positioning member and the telescopic member.

[0011] In order to further reduce the storage volume and facilitate the concealment of the gangway handrail, in a preferred technical solution, the support member is provided with a first storage groove that can cooperate with the gangway handrail.

[0012] The second aspect of the present invention is to provide a concealed boarding ladder, comprising a plurality of concealed ladder steps as described above spaced apart in an inclined direction, wherein the unfolded ladder handrail can overlap with the railing module of the adjacent concealed ladder steps.

[0013] In order to further reduce the storage volume, simplify the deployment and locking of the gangway handrails, and facilitate the faster formation of a continuous railing protection structure, in the preferred technical solution, the railing module includes a block member, and the driving mechanism is used to drive the block member to extend and retract relative to the support member, and the extended block member can cooperate and connect with the deployed gangway handrail of the adjacent railing module.

[0014] In order to further reduce the storage volume and simplify the telescopic drive of the baffle, in a preferred technical solution, the support member and the baffle slide together along the telescopic direction of the baffle, a rack is provided on the baffle, and the drive mechanism includes a rotating gear that can cooperate with the rack.

[0015] In order to further reduce the storage volume and conceal the stopper, in a preferred technical solution, the support member is provided with a second storage groove that can cooperate with the stopper.

[0016] In order to further make full use of the spatial layout, reduce the storage volume, and facilitate the smoothness of movement, in the preferred technical solution, the driving mechanism includes a rotary drive, a first bevel tooth and a first pulley. The rotary drive is used to drive the first bevel tooth to rotate. The first pulley is provided with a second bevel tooth that cooperates with the first bevel tooth. The rotating gear is provided with a second pulley, and a transmission belt is provided between the second pulley and the first pulley.

[0017] In order to further simplify the rotational drive, in the preferred technical solution, the rotational drive includes a fourth shaft, a magnetic part, and a metal belt. The magnetic part is sleeved on the outside of the fourth shaft. A clockwork spring is provided between the inside of the magnetic part and the fourth shaft. The magnetic part is coaxially connected to the first bevel tooth. The metal belt is wound on the magnetic part, and the end of the metal belt is connected to the positioning part of the telescopic mechanism.

[0018] A third aspect of the present invention is to provide a method for using a concealed boarding ladder. Based on the concealed boarding ladder step described above, the method includes:

[0019] A plurality of storage spaces for respectively arranging concealed gangway steps are sequentially arranged on the hull from the bottom to the side of the ship;

[0020] Through delayed response, the folding steps of the concealed gangway steps are sequentially unfolded from the bottom of the ship to the side of the ship until they are exposed to the hull, and the gangway handrails are unfolded and overlapped with the handrail modules of the adjacent concealed gangway steps to form and use the concealed boarding gangway;

[0021] When the concealed boarding gangway is not in use, the concealed gangway step is controlled to move in reverse and be stored in the corresponding storage space.

[0022] In order to further utilize the delayed control principle to achieve the rapid release and recovery of the gangway steps and boarding ladder, in the preferred technical solution, the railing module includes a block, and the driving mechanism is used to drive the block to extend and retract relative to the support. During the unfolding process of the folding pedal of each concealed gangway step, after the railing module is exposed to the hull, the gangway handrail is unfolded and operated first, and the block is extended and operated later, until the extended block is coordinated and connected with the unfolded gangway handrail of the adjacent railing module.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention can hide the gangway steps / boarding ladder as a whole inside the hull, freeing up space and optimizing navigation performance. Compared with the gangway steps of the overall folding or telescopic structure, the storage volume required for the gangway steps is greatly reduced, which is convenient for concealed installation and ship construction, and is convenient for maintaining the strength and durability of the gangway steps.

[0025] (2) The boarding ladder of the present invention has a plurality of ladder steps spaced apart along the inclined direction, and the unfolded ladder handrails can overlap with the railing modules of adjacent concealed ladder steps to form a continuous railing protection structure, which not only meets the load-bearing capacity of the ladder steps but also takes into account the continuous protection function in a limited space.

[0026] (3) The rotary drive of the gangway step / boarding ladder of the present invention can further adopt a fourth axis, a magnetic part, and a metal belt. While the railing module is driven to move back and forth by the telescopic mechanism, the rotary drive can drive the magnetic part and the first bevel tooth to rotate through the mechanical linkage of the metal belt, thereby driving the blocking part to synchronously telescope relative to the supporting part, further simplifying the control and reducing the operating energy consumption.

[0027] (4) When the gangway step of the present invention is released, the telescopic mechanism drives the folding step to unfold, and at the same time drives the railing module to be exposed outside the hull. The folding step can bear the weight independently. Compared with the pilot ladder, multiple people can pass through it at the same time, avoiding the shaking problem; multiple gangway steps can be released or recovered at the same time, and the specific installation position of the gangway step can avoid other structures of the hull, so that the movement trajectory of the gangway step is simplified, making the release and recovery of the gangway ladder simple and quick.

[0028] (5) The method of using the present invention can utilize the delay control principle to control the release or retraction of each concealed gangway step, thereby avoiding component interference and further improving operational efficiency, thereby achieving rapid release and retraction of the gangway step and the boarding ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0030] Figure 13D schematic diagram of the release state of Example 1 of the present invention;

[0031] Figure 2 This is a bottom-up exploded schematic diagram of Example 1 of the present invention;

[0032] Figure 3 1 is a schematic exploded top view of Example 1 of the present invention;

[0033] Figure 4 is a top view of embodiment 1 of the present invention;

[0034] Figure 5 yes Figure 4 Installation and release diagram in the AA section direction;

[0035] Figure 6 yes Figure 4 Installation and recovery diagram in the AA section direction;

[0036] Figure 7 is a side view of the released state of Example 1 of the present invention;

[0037] Figure 8 This is a side view of the recovery state of Example 1 of the present invention;

[0038] Figure 9 This is a left-side stereoscopic schematic diagram of a released state of Example 2 of the present invention;

[0039] Figure 10 is a right-side stereoscopic schematic diagram of a released state of embodiment 2 of the present invention;

[0040] Figure 11 2 is a schematic diagram of the rotary drive structure of Example 3 of the present invention;

[0041] Figure 12 Schematic diagram of the installation of the rotary drive and the first bevel gear of Example 3 of the present invention;

[0042] Figure 13 is a side view of a released state of Example 3 of the present invention;

[0043] Figure 14 This is a side view of the recovery state of Example 3 of the present invention;

[0044] Figure 15 It is a schematic diagram of the layout of the storage space of Example 4 of the present invention.

[0045] Markings in the figure: folding pedal 1, first pedal panel 101, second pedal panel 102, hinge 103, hinge shaft 104, connecting rod 105; telescopic mechanism 2, positioning member 201, telescopic member 202; handrail module 3, support member 31, first shell 311, second shell 312, first receiving groove 313, through hole 314, first slide 315, second slide 316, second receiving groove 317; gangway handrail 32, bayonet 321; drive mechanism 33, first shaft 331, second motor 332, rotating gear 333, first motor 334, first pulley 335, first bevel gear 336, second bevel gear 337, second pulley 338, transmission belt 339, second shaft 340, third shaft 341, fourth shaft 342, magnetic part 343, metal belt 344, clockwork spring 345, bracket 346, strong magnet 347, smooth iron sheet 348, guide wheel 351; stopper 34, rack 349, boss 350; storage space 4, hull 5, bottom 6, side 7, shore 8. DETAILED DESCRIPTION

[0046] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0049] Example 1:

[0050] In view of the fact that the existing outboard pilot ladder occupies a large space, requires a lot of preparation work when installing and boarding the ship, and is easy to shake when multiple people pass through, the concealed gangway ladder is more suitable for traditional non-concealed gangway ladders. Although it can solve the problems of long-term exposure of the gangway ladder leading to waste of deck space, affecting the streamline and navigation performance of the ship, high maintenance frequency, and significant anti-corrosion costs, it has a large storage volume and is complicated and slow to release and recover. The present invention considers the use of concealed gangway ladder steps and gangway ladder handrails 32, such as Figures 1 to 7 As shown, a preferred embodiment of the concealed gangway step of the present invention is shown, wherein the concealed gangway step comprises a folding step 1, a telescopic mechanism 2 and a handrail module 3, wherein the telescopic mechanism 2 is used to drive the folding step 1 to fold or unfold and drive the handrail module 3 to move back and forth, and the handrail module 3 is close to the outer side of the folding step 1. The handrail module 3 comprises a support member 31, a gangway handrail 32 and a driving mechanism 33, wherein the support member 31 is connected to the telescopic mechanism 2, and the driving mechanism 33 is used to drive the gangway handrail 32 to deflect and unfold relative to the support member 31 in a direction parallel to the telescopic direction and lock it, or drive the gangway handrail 32 to deflect and retract relative to the support member 31.

[0051] like Figures 1 to 3 As shown, for example, the support member 31 includes a first shell 311 and a second shell 312. The first shell 311 is close to the folding pedal 1 and connected to the telescopic mechanism 2. One end of the gangway handrail 32 is mounted on the first shell 311 through a first shaft 331. The first shaft 331 is parallel to the telescopic direction of the telescopic mechanism 2. The driving mechanism 33 includes a second motor 332 mounted on the first shell 311. The second motor 332 drives the gangway handrail 32 to reciprocate relative to the first shell 311 around the first shaft 331 by being connected to the first shaft 331. After the first motor 334 is assembled, the second shell 312 is covered. The first shell 311 and the second shell 312 are connected, and the second motor 332 can be set inside the second shell 312 to play an aesthetic and protective role. The installation and working principle of the above-mentioned concealed gangway pedal may include:

[0052] like Figure 6 As shown, a storage space 4 for a concealed gangway step is provided on board. When the step is recovered, the telescopic mechanism 2 drives the folding step 1 to fold, and simultaneously drives the handrail module 3 to retract into the storage space 4. Figure 8 As shown, at this time, the second motor 332 drives the gangway handrail 32 to deflect and retract relative to the support member 31, so that the gangway step can be hidden inside the hull 5 as a whole, freeing up space and optimizing navigation performance. At the same time, compared with a gangway with an overall folding or telescopic structure, the storage volume required for the gangway step is greatly reduced, which is convenient for concealed installation and ship construction, and is convenient for maintaining the strength and durability of the gangway; Figures 1 to 5 As shown, when the gangway step is released, the telescopic mechanism 2 drives the folding step 1 to unfold, and at the same time drives the handrail module 3 to be exposed outside the hull 5. The folding step 1 can bear the weight independently and can pass multiple people at the same time to avoid shaking problems; Figure 7 As shown, the second motor 332 drives the gangway handrail 32 to deflect in the opposite direction around the first axis 331 and start self-locking, that is, drives the gangway handrail 32 to deflect and unfold relative to the support member 31 in a direction parallel to the telescopic direction and lock. When personnel board the ship, the gangway handrail 32 can provide protection as an external protection. Compared with the complete release and recovery of the gangway by the coordinated work of various mechanical or driving structures, multiple gangway pedals can be released or recovered at the same time. At the same time, the specific installation position of the gangway pedals can avoid other structures of the hull 5, so that the movement trajectory of the gangway pedals is simplified, which is conducive to making the release and recovery of the gangway simple and quick.

[0053] Furthermore, the folding pedal 1 includes at least two pedal panels hinged to each other, the telescopic mechanism 2 includes a positioning member 201 and a telescopic member 202 that can be telescoped relative to the positioning member 201, and the two ends of the folding pedal 1 are hinged to the positioning member 201 and the telescopic member 202 respectively.

[0054] For example, Figures 1 to 5 As shown, the telescopic mechanism 2 includes two sets of positioning members 201 and telescopic members 202, and the first shell 311 is vertically connected to the two telescopic members 202. For example, the main body of the pneumatic / hydraulic cylinder / linear motor can be used as the positioning member 201 and installed on the inner side of the hull 5, and the pneumatic rod of the pneumatic cylinder / the hydraulic rod of the hydraulic cylinder / the slider of the linear motor is used as the telescopic member 202. The telescopic mechanism 2 is set below the folding pedal 1. The folding pedal 1 includes a first pedal panel 101 and a second pedal panel 102. One end of the first pedal is hinged to the positioning member 201, and the other end of the first pedal is hinged to one end of the second pedal. Part 103, the hinged part 103 includes a hinge shaft 104 and a plurality of eccentric connecting rods 105, the hinge shaft 104 passes through one end of the plurality of connecting rods 105, and the other ends of the plurality of connecting rods 105 are respectively connected to the first pedal and the second pedal, and the other end of the second pedal is hinged to the telescopic part 202. When the telescopic part 202 is extended relative to the positioning part 201, the second pedal can be pulled to deflect the first pedal and the second pedal relative to the hinge position to a horizontal state, unfolding the folding pedal 1 and driving the railing module 3 to move horizontally outward relative to the hull 5. The telescopic mechanism 2 can also serve as a support for the folding pedal 1 to improve the weighing strength. Figure 6As shown, when the telescopic member 202 contracts relative to the positioning member 201, the second pedal and the railing module 3 can be pulled back, so that the first pedal and the second pedal are deflected to a vertical state relative to the hinge position, and the first pedal, the second pedal and the railing module 3 are tightly attached, thereby further simplifying the folding pedal 1 and the drive structure, reducing the storage volume, and maintaining the structural strength. The appropriate number and size of pedal panels can be designed according to the width of people passing through. If multiple pedal panels are provided, the adjacent pedal panels are connected by the hinge 103, and the two outermost pedal panels are respectively connected to the positioning member 201 and the telescopic member 202.

[0055] Furthermore, the support member 31 is provided with a first receiving groove 313 capable of cooperating with the gangway handrail 32; for example, Figure 2 and Figure 7 As shown, a first receiving slot 313 is provided on one side of the first box body. Figure 8 As shown, the gangway handrail 32 can be deflected and stored in the first storage groove 313, which can further reduce the storage volume and facilitate the hidden setting of the gangway handrail 32.

[0056] Example 2:

[0057] In view of the fact that the existing outboard pilot ladder takes up a lot of space, requires a lot of preparation work when installing and boarding the ship, and is prone to shaking when multiple people pass through, the concealed gangway ladder is more suitable for traditional non-concealed gangway ladders. Although it can solve the problems of the gangway ladder being exposed for a long time, causing waste of deck space, affecting the streamline and navigation performance of the ship, high maintenance frequency, and significant anti-corrosion costs, it has a large storage volume, cannot form a continuous railing protection structure, and is complicated and slow to release and recover. Figures 9-10 As shown, a preferred embodiment of the concealed boarding ladder of the present invention is shown, wherein the concealed boarding ladder comprises a plurality of concealed ladder steps as described in Example 1 distributed at intervals along an inclined direction, and the unfolded ladder handrail 32 can overlap with the railing module 3 of the adjacent concealed ladder steps.

[0058] For example, Figure 15 As shown, a plurality of storage spaces 4 for respectively setting concealed gangway steps are arranged in sequence along the direction from the bottom 6 to the side 7 of the hull 5. Figure 6 As shown, when retracted, each concealed gangway step is hidden and stored in the storage space 4. In terms of storage volume, compared with the overall folding or telescopic structure of the gangway, which requires a larger storage volume, the concealed gangway steps can be divided into smaller storage spaces 4, and the boarding gangway can be concealed and retracted into the hull 5. Especially when the length of the boarding gangway is long, it is more convenient for concealed installation and ship construction. After the ship approaches the dock 8, as shown in FIG. Figure 9 and Figure 10As shown, when the concealed gangway steps are released, the folding step 1 of each concealed gangway step is unfolded and the gangway handrail 32 is deflected and unfolded, and the folding step 1 of the lowest concealed gangway step is close to the shore 8 wharf. If the distance between the folding step 1 and the shore 8 wharf is large, an auxiliary step can also be installed on the shore 8 wharf. In this way, after the ship is built, the concealed gangway steps can be released to form a complete boarding gangway, which can replace the external pilot ladder. People can get on and off the ship in turn through each folding step 1. The folding step 1 bears weight independently and can pass multiple people at the same time to avoid shaking problems.

[0059] The unfolded gangway handrail 32 can overlap with the railing module 3 of the adjacent concealed gangway step to form a continuous railing protection structure, which not only meets the load-bearing capacity of the gangway step but also takes into account the continuous protection function within a limited space. It has good protection performance and can improve the current situation where a lot of preparation work is required for boarding, which is conducive to improving boarding efficiency and safety; since multiple concealed gangway steps can be independently synchronized or delayed for retraction and extension, there is no need for the coordinated work of various mechanical or drive structures to complete the complete release and recovery of the gangway, making the retraction and extension operation of the boarding gangway simpler and quicker. At the same time, the position of the storage space 4 can be designed as needed to avoid other structures of the hull 5, and the movement trajectory is simplified during release and recovery, which is conducive to improving boarding efficiency.

[0060] Furthermore, the railing module 3 includes a stopper 34, and the driving mechanism 33 is used to drive the stopper 34 to extend and retract relative to the support member 31. The extended stopper 34 can be connected to the gangway handrail 32 deployed by the adjacent railing module 3, for example: Figures 1 to 8 As shown, the blocking member 34 adopts a baffle structure, such as Figure 8 As shown, when the stopper 34 is retracted relative to the support member 31, the width of the railing module 3 can be reduced, making it easier to store in the storage space 4. Figure 7 / As shown in / 9~10, when the stopper 34 is extended relative to the support member 31, the extended stopper 34 can be connected with the gangway handrail 32 unfolded by the adjacent railing module 3. It can be directly contacted and overlapped, or a V-shaped or rectangular bayonet 321 can be set on the gangway handrail 32, and the stopper 34 is connected with the bayonet 321 to achieve a matching connection. In this way, compared with directly overlapping the gangway handrail 32 on the support member 31 of the adjacent hidden gangway step, by adding the stopper 34, the stopper 34 can be used as a part of the continuous railing structure to reduce the required length of the gangway handrail 32, thereby further reducing the storage volume. At the same time, the stopper 34 is also used to limit the rotation of the locked unfolded gangway handrail 32, which can further simplify the unfolding and locking of the gangway handrail 32. The gangway handrail 32 and the stopper 34 can be unfolded in sequence with a delayed time, so as to facilitate the rapid movement of each hidden gangway step and form a continuous railing protection structure more quickly.

[0061] Furthermore, the support member 31 and the stopper 34 slide together along the extension and contraction direction of the stopper 34. The stopper 34 is provided with a rack 349. The driving mechanism 33 includes a rotating gear 333 capable of cooperating with the rack 349. For example, Figure 2 As shown, the second housing 312 is provided with a first sliding groove 315. Figure 3 As shown, the first housing 311 is provided with a second slide groove 316, the first housing 311 is provided with a through hole 314 for the front section of the stopper 34 to pass through, and the two sides of the rear section of the stopper 34 are provided with bosses 350 that slide with the first slide groove 315 and the second slide groove 316. The rotating gear 333 is installed on the first housing 311 through the second shaft 340. Figure 5 and Figure 6 As shown, after the first shell 311 and the second shell 312 are assembled, they can slide along the first slide groove 315 and the second slide groove 316 through the boss 350 to keep the stopper 34 moving back and forth smoothly horizontally, as shown in FIG. Figure 7 As shown, the boss 350 can also limit the extension stroke of the stopper 34 by cooperating with the through hole 314 to prevent the stopper 34 from extending too long and causing impact damage to the gangway handrail 32, such as Figure 7 and Figure 8 As shown, the rack 349 is engaged with the rotating gear 333, and when the rotating gear 333 rotates forward or reverse, it can be transmitted through the rack 349 to drive the block 34 to extend and retract relative to the support member 31, which can further reduce the storage volume and simplify the extension and retraction drive of the block 34.

[0062] Furthermore, the support member 31 is provided with a second receiving groove 317 capable of cooperating with the stopper 34, for example: Figure 3 As shown, the first housing 311 is provided with a second receiving groove 317 for setting the stopper 34 and the rotating gear 333, as shown in FIG. Figure 8 As shown, the blocking member 34 can be retracted into the first shell 311 and the second shell 312 when it is contracted, which can further reduce the storage volume, conceal the blocking member 34, and reduce the weight of the support member 31.

[0063] Furthermore, the driving mechanism 33 includes a rotary drive, a first bevel tooth 336 and a first pulley 335. The rotary drive is used to drive the first bevel tooth 336 to rotate. The first pulley 335 is provided with a second bevel tooth 337 that cooperates with the first bevel tooth 336. The rotating gear 333 is provided with a second pulley 338. A transmission belt 339 is provided between the second pulley 338 and the first pulley 335.

[0064] For example, Figure 3As shown, the rotation drive is a first motor 334, the first motor 334 is installed in the first shell 311 and the second shell 312, the first pulley 335 is installed on the first shell 311 through the third shaft 341, and the second pulley 338 is set at the center of the rotating gear 333, then the first motor 334 can drive the first bevel gear 336 to rotate, drive the second bevel gear 337 engaged with the first bevel gear 336 to rotate, and the second bevel gear 337 drives the coaxial first pulley 335 to rotate around the third shaft 341, and the second bevel gear 337 drives the coaxial first pulley 335 to rotate around the third shaft 341 through the transmission belt 339. The pulley 338 rotates, and the second pulley 338 drives the coaxial rotating gear 333 to rotate. The rotating gear 333 drives the block 34 to extend and retract through the rack 349. Compared with directly connecting the motor drive to the rotating gear 333, this transmission method can reduce the width of the first shell 311 and the second shell 312, further fully utilize the space layout and reduce the storage volume. At the same time, the configuration selection of the first bevel gear 336 and the second bevel gear 337 can meet the actual load requirements, avoid mechanical jamming or overload, and facilitate improving the smoothness of the drive operation.

[0065] Example 3:

[0066] Another preferred embodiment of the concealed boarding ladder described in the present invention differs from Example 2 in that: the rotary drive includes a fourth shaft 342, a magnetic part 343, and a metal belt 344, the magnetic part 343 is sleeved on the outside of the fourth shaft 342, a clockwork spring 345 is provided between the inside of the magnetic part 343 and the fourth shaft 342, the magnetic part 343 is coaxially connected to the first bevel tooth 336, the metal belt 344 is wound on the magnetic part 343, and the end of the metal belt 344 is connected to the positioning part 201 of the telescopic mechanism 2.

[0067] For example, Figures 11-12As shown, a bracket 346 is provided in the first shell 311 / the second shell 312, the fourth shaft 342 is mounted on the first shell 311 / the second shell 312, a plurality of spring springs 345 are arranged at intervals, the magnetic member 343 can adopt a strong magnet 347 of a cylindrical structure, a smooth iron sheet 348 is provided inside the strong magnet 347, the magnetic member 343 passes through the bracket 346 and is sleeved on the fourth shaft 342, one end of the magnetic member 343 is limited by one end of the bracket 346, and the other end of the magnetic member 343 is coaxially connected to the first umbrella tooth 336, the first umbrella tooth The tooth 336 is limited by the other end of the bracket 346 to realize the installation of the magnetic part 343 and the first bevel tooth 336. One end of the clockwork spring 345 is connected to the fourth shaft 342, and the other end of the clockwork spring 345 is connected to the magnetic part 343. The metal belt 344 can be selected as iron sheet. The iron sheet is thin and flexible, which is more convenient for winding and adsorbing on the outside of the magnetic part 343. One end of the metal belt 344 is fixedly connected to the outside of the magnetic part 343. The metal belt 344 is wound on the magnetic part 343. The bracket 346 is used to limit the two sides of the metal belt 344 for correction to prevent misalignment during unwinding or winding.

[0068] like Figures 13-14 As shown, in order to further facilitate the stable operation of the metal belt 344, a guide wheel 351 is provided under the second shell 312. The other end of the metal belt 344 passes through the bracket 346 and the second shell, bypasses the guide wheel 351, and is connected to the positioning member 201 from the bottom of the telescopic mechanism 2. It can also be connected to the hull. Figure 13 As shown, when the telescopic member extends relative to the positioning member 201 to drive the railing module 3 to expose the hull, the metal belt 344 is subjected to tension, which drives the metal belt 344 to unwind, thereby driving the magnetic member 343 to rotate axially around the fourth shaft 342 relative to the fourth shaft 342, the bracket 346 remains stationary, and the clockwork spring 345 rotates and bends, while driving the first bevel tooth 336 connected to the magnetic member 343 to rotate synchronously, thereby driving the blocking member to extend, as shown in FIG. Figure 14 As shown, the telescopic part contracts relative to the positioning part 201, that is, when the railing module 3 is recovered, the metal belt 344 can be pushed to be adsorbed on the magnetic part 343 and wound up, and synchronously affected by the elastic recovery effect of the clockwork spring 345, the magnetic part 343 rotates axially around the fourth axis 342 relative to the fourth axis 342 in the opposite direction, thereby synchronously driving the first bevel tooth 336 to rotate in the opposite direction, and then driving the block to automatically retract. The depth of the second storage groove can be set according to design requirements, so that the driving railing module 3 is completely exposed to the hull, and the block then extends from the driving railing module 3.

[0069] In this way, while the railing module 3 is driven to move back and forth by the telescopic mechanism 2, the rotary drive can drive the block to move synchronously with the support member through mechanical linkage. Compared with the structure in which the rotary drive is the first motor, the control and circuit layout can be further simplified and the operating energy consumption can be reduced.

[0070] Preferably, the second shaft 340 is a friction torque limiter, the active side of the friction torque limiter is connected to the second pulley 338, and the driven side of the friction torque limiter is connected to the rotating gear 333. When the boss 350 and the through hole 314 limit the continued extension of the limiting block 34, driving the rotating gear 333 to be stuck, if the folding pedal 1 has not been fully unfolded at this time, the metal belt 344 continues to pull and drive the second pulley 338 to continue to rotate, the friction torque limiter can apply pressure to the friction plate through its own disc spring, so that when the torque exceeds the set value, friction and slippage will occur between the active and passive sides to prevent mechanical damage.

[0071] Example 4:

[0072] To address the technical issues of the complicated and slow release and recovery of existing gangways, a preferred embodiment of the method for using the concealed boarding gangway of the present invention is based on the concealed gangway step described in Example 2 / 3, and the method of use includes:

[0073] like Figure 11 As shown, a plurality of storage spaces 4 for respectively setting concealed gangway steps are arranged in sequence along the bottom 6 to the side 7 of the hull 5;

[0074] Through delayed response, the folding steps 1 of the concealed gangway steps are sequentially unfolded along the direction from the bottom 6 to the side 7 until they are exposed to the hull 5, and the gangway handrails 32 are unfolded and overlapped with the handrail modules 3 of the adjacent concealed gangway steps to form and use the concealed boarding gangway;

[0075] When the concealed boarding gangway is not in use, the concealed gangway step is controlled to move in reverse and stored in the corresponding storage space 4.

[0076] Furthermore, the railing module 3 includes a stopper 34, and the driving mechanism 33 is used to drive the stopper 34 to extend and retract relative to the support member 31. During the unfolding process of the folding pedal 1 of each concealed gangway step, after the railing module 3 is exposed to the hull 5, the gangway handrail 32 is unfolded and operated first, and the stopper 34 is extended and operated later, until the extended stopper 34 is connected with the unfolded gangway handrail 32 of the adjacent railing module 3. For example, the telescopic mechanism 2, the first motor 334, and the second motor 332 are connected to the control hull 5 via Bluetooth with a remote control device. The specific method of use may include the following steps:

[0077] Step 1: When releasing the concealed gangway step, ensure that there is no grinding, painting, welding or other operations around the entire process to avoid sparks or spatter caused by surrounding hot work such as welding and grinding during the release process, which may cause damage to the gangway mechanical parts or personnel safety risks.

[0078] Step 2: Release the hidden gangway pedal closest to the bottom of the ship 6 by remote control, the telescopic mechanism 2 on the inside of the hull 5 begins to extend, the folding pedal 1 begins to extend, and after the railing module 3 is exposed from the hull 5, the remote control device controls the second motor 332 through Bluetooth delay to drive the gangway handrail 32 to rotate, the telescopic mechanism 2 continues to extend, and the first motor 334 runs to drive the block 34 to extend relative to the support member 31 until the folding pedal 1 is completely horizontal, and the extended block 34 cooperates with the ladder handrail 32 unfolded by the adjacent railing module 3, wherein the ladder handrail 32 is unfolded and operated first, and the block 34 is extended and operated later, which can avoid the block 34 extending first to hinder the deflection of the gangway handrail 32.

[0079] Step 3: Through delayed response, a cascade trigger mechanism can be adopted. After the concealed gangway step closest to the bottom of the ship 6 is completely released, the concealed gangway steps are released step by step along the bottom of the ship 6 to the side of the ship 7, forming a wave-like deployment effect, reducing the overall impact load, and the side handrail on the ship is released, locking the gangway handrail 32 of the uppermost concealed gangway step.

[0080] Step 4: When docking at the shore 8, add this step and install an auxiliary pedal at the hidden gangway pedal at the bottom 6 of the ship to form a hidden boarding ladder.

[0081] Step 5: Personnel board and disembark in batches using the concealed boarding gangway; when the concealed boarding gangway is not in use, the ship's side handrail is retracted, and the concealed gangway steps are controlled in reverse to operate and be stored in the corresponding storage space 4. The electric / pneumatic / hydraulic locking telescopic mechanism 2 is used to prevent accidental deployment caused by ship shaking. This process cleverly utilizes the delay control principle to avoid component interference and further improve operational efficiency, solving the core problems of traditional concealed gangways such as "slow deployment, easy interference, and difficult coordination", and realizing the rapid release and recovery of the gangway steps and the boarding gangway.

[0082] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concealed gangway step, characterized in that: The utility model comprises a folding pedal (1), a telescopic mechanism (2) and a handrail module (3); the telescopic mechanism (2) is used for driving the folding pedal (1) to fold or unfold and driving the handrail module (3) to reciprocate; the handrail module (3) is close to the outside of the folding pedal (1); the handrail module (3) comprises a support member (31), a gangway handrail (32) and a driving mechanism (33); the support member (31) is connected to the telescopic mechanism (2); the driving mechanism (33) is used for driving the gangway handrail (32) to deflect and unfold relative to the support member (31) in a direction parallel to the telescopic direction and to lock it, or to drive the gangway handrail (32) to deflect and retract relative to the support member (31).

2. The concealed gangway step according to claim 1, characterized in that: The folding pedal (1) comprises at least two pedal panels hinged to each other, the telescopic mechanism (2) comprises a positioning member (201) and a telescopic member (202) capable of telescoping relative to the positioning member (201), and both ends of the folding pedal (1) are hinged to the positioning member (201) and the telescopic member (202), respectively.

3. The concealed gangway step according to claim 1, characterized in that: The support member (31) is provided with a first receiving groove (313) capable of cooperating with the gangway handrail (32).

4. A concealed boarding ladder, characterized in that: The invention comprises a plurality of concealed gangway steps as claimed in any one of claims 1 to 3 which are distributed at intervals along an inclined direction, and the unfolded gangway handrail (32) can overlap with the handrail module (3) of the adjacent concealed gangway steps.

5. The concealed boarding ladder according to claim 4, characterized in that: The handrail module (3) includes a stopper (34), and the driving mechanism (33) is used to drive the stopper (34) to extend and retract relative to the support member (31). The extended stopper (34) can be connected to the extended gangway handrail (32) of the adjacent handrail module (3).

6. The concealed boarding ladder according to claim 5, characterized in that: The support member (31) and the stop member (34) are slidably matched along the extension and contraction direction of the stop member (34); a rack (349) is provided on the stop member (34); and the driving mechanism (33) includes a rotating gear (333) capable of matching with the rack (349).

7. The concealed boarding ladder according to claim 4, characterized in that: The driving mechanism (33) includes a rotary drive, a first bevel tooth (336) and a first pulley (335); the rotary drive is used to drive the first bevel tooth (336) to rotate; the first pulley (335) is provided with a second bevel tooth (337) that cooperates with the first bevel tooth (336); the rotating gear (333) is provided with a second pulley (338); and a transmission belt (339) is provided between the second pulley (338) and the first pulley (335).

8. The concealed boarding ladder according to claim 7, characterized in that: The rotary drive comprises a fourth shaft (342), a magnetic member (343), and a metal belt (344); the magnetic member (343) is sleeved on the outside of the fourth shaft (342); a spring (345) is provided between the inside of the magnetic member (343) and the fourth shaft (342); the magnetic member (343) is coaxially connected to the first bevel tooth (336); the metal belt (344) is wound on the magnetic member (343), and the end of the metal belt (344) is connected to the positioning member (201) of the telescopic mechanism (2).

9. A method for using a concealed boarding ladder, characterized in that: The method of using the concealed boarding ladder according to claim 4 includes: A plurality of storage spaces (4) for respectively arranging concealed gangway steps are sequentially arranged on the hull (5) from the bottom (6) to the side (7); By means of delayed response, the folding steps (1) of the concealed gangway step are sequentially unfolded along the direction from the bottom (6) to the side (7) of the ship until the hull (5) is exposed, and the gangway handrail (32) is unfolded and overlapped with the handrail module (3) of the adjacent concealed gangway step to form and use the concealed boarding gangway; When the concealed boarding gangway is not in use, the concealed gangway step is controlled to run in reverse and stored in the corresponding storage space (4).

10. The method for using the concealed boarding ladder according to claim 9, characterized in that: The railing module (3) includes a stopper (34), and the driving mechanism (33) is used to drive the stopper (34) to extend and retract relative to the support member (31). During the unfolding process of the folding pedal (1) of each concealed gangway step, after the railing module (3) is exposed from the hull (5), the gangway handrail (32) is unfolded and operated first, and the stopper (34) is extended and operated later, until the extended stopper (34) is connected with the unfolded gangway handrail (32) of the adjacent railing module (3).

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