Boarding ladder

Abstract

The invention relates to a boarding ladder, and belongs to the technical field of ship auxiliary equipment. Comprising a fixing assembly, an overturning assembly, a linkage rotating assembly, a transmission assembly and a pedal assembly. The fixing assembly is fixedly connected with the ship body and used for containing the overturning assembly and the pedal assembly. The overturning assembly is in sliding connection with the fixing assembly and in rotating connection with the linkage rotating assembly. The transmission assembly is rotationally connected with the overturning assembly, and the two ends of the transmission assembly are connected with the linkage rotating assembly and the pedal assembly correspondingly. The pedal assembly is rotationally connected with the overturning assembly, and when the overturning assembly slides to the rear half stroke of the fixing assembly, the pedal assembly is driven by the linkage rotating assembly and the transmission assembly to rotate relative to the overturning assembly. Through structural optimization and mechanical linkage design, the storage performance, the automation degree, the stability, the adaptability and the like are remarkably improved.

Description

Technical Field

[0001] This application belongs to the field of ship auxiliary equipment technology, specifically relating to a boarding ladder. Background Technology

[0002] In scenarios such as ship berthing at docks, offshore platform operations, or emergency rescue, boarding equipment is a core device for ensuring the safe and efficient movement of personnel. Currently, the mainstream boarding methods and corresponding equipment mainly include fixed gangplanks, manually folding boarding ladders, simple telescopic boarding devices, and customized boarding structures. However, these devices have gradually revealed many shortcomings in long-term use and are unable to meet the requirements of modern ship operations for space utilization, automation, safety and stability, and scenario adaptability.

[0003] For example, traditional fixed gangplanks are mostly one-piece rigid structures that cannot be folded or stored after being fixed to the ship's deck. When not in use, they occupy core deck space for extended periods, affecting cargo loading and unloading, equipment handling, and other operations, and also increasing the ship's drag coefficient during navigation. While some manually folding gangplanks can achieve initial folding, they still require separate storage space after folding, and their loose folding structure is susceptible to damage from waves and wind and rain, limiting their lifespan.

[0004] Existing manual boarding equipment, such as folding ladders and portable gangplanks, relies entirely on manual operation for deployment and retrieval. Typically, 2-3 operators are needed to complete the processes of handling, assembling, and securing them. This is not only labor-intensive but also takes 5-10 minutes per operation, making it unsuitable for emergency rescue or rapid boarding of large numbers of personnel. Furthermore, in inclement weather or at night, manual operation is prone to accidents such as falls and equipment collisions due to obstructed visibility and slippery surfaces. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a boarding ladder. This application achieves significant improvements in terms of storage capacity, automation level, stability and adaptability through structural optimization and mechanical linkage design.

[0006] The technical solution adopted in this application to solve the problems existing in the prior art is: A boarding ladder includes a fixing component, a tilting component, a linkage rotating component, a transmission component, and a step component. Wherein: The fixing component is fixedly connected to the hull and is used to house the flipping component and the pedal component.

[0007] The flipping component is slidably connected to the fixed component and rotatably connected to the linkage rotating component.

[0008] The transmission component and the tilting component are rotatably connected, and their two ends are respectively connected to the linkage rotation component and the pedal component.

[0009] The pedal assembly is rotatably connected to the flipping assembly. When the flipping assembly slides to the second half of the fixed assembly's movement, the pedal assembly rotates relative to the flipping assembly via the linkage rotating assembly and the transmission assembly.

[0010] Furthermore, the fixing component includes a base plate, a sliding plate, and a guide plate.

[0011] The sliding plates are located on both sides of the base plate, and the downward-sloping guide plates are located at the ends of the base plate.

[0012] The slide plate is equipped with a slider, and the linkage rotation component is rotatably connected to the slider.

[0013] The base plate supports the flipping component. When the flipping component slides to the end of the base plate, it flips downward under the guidance of the guide plate and its own weight.

[0014] Furthermore, a sliding control component is fixedly provided on the fixed component, which is used to control the slider to slide back and forth on the slide plate.

[0015] Furthermore, the linkage rotation component includes a first rotating shaft, on which a gear and a first bevel gear are coaxially fixedly connected, and the first rotating shaft is rotatably connected to the slider and the flipping component.

[0016] The bottom plate is provided with a rack at its end, which is connected to a gear.

[0017] The transmission assembly includes a second rotating shaft and a second bevel gear fixed to both ends of the second rotating shaft along its axial direction. The second rotating shaft is rotatably connected to the tilting assembly. The pedal assembly includes a third bevel gear.

[0018] The two second bevel gears of the transmission assembly are respectively engaged with the first bevel gear and the third bevel gear.

[0019] Furthermore, the flipping assembly includes an intermediate plate, with a first sleeve and a second sleeve respectively provided at opposite ends of the intermediate plate, wherein the first sleeve is sleeved with the first rotating shaft.

[0020] The pedal assembly includes a third rotating shaft that is coaxially and fixedly connected to a third bevel gear, and the second sleeve is sleeved with the third rotating shaft.

[0021] Furthermore, a top plate is provided at intervals above the base plate of the fixing component, and the base plate and the top plate are fixedly connected by vertically arranged side plates.

[0022] Furthermore, a limiting block is provided at the end of the slide plate opposite to the guide plate, which is used to block and limit the sliding of the slider.

[0023] Furthermore, the intermediate plate has fixing grooves on both sides. A support block is sleeved on the outside of the second rotating shaft, and the support block is detachably connected to the fixing groove.

[0024] Furthermore, a linkage assembly connects the pedal assembly and the flipping assembly.

[0025] Furthermore, the pedal assembly includes a pedal, a third rotating shaft is fixedly disposed at one end of the pedal facing the flipping assembly, and a fourth rotating shaft is fixed on the pedal.

[0026] The flipping assembly is equipped with a hinge plate.

[0027] The linkage assembly includes a first link and a second link hinged to each other at their ends. The end of the first link away from the second link is hinged to a hinge plate. The end of the second link away from the first link is provided with a second oblong hole. The fourth rotating shaft is slidably disposed in the second oblong hole.

[0028] Compared with the prior art, the beneficial effects of this application are as follows: (1) Through the chamber design of the fixed component, the core components such as the flip component and the pedal component are completely stored, the overall structure is compact, and the height and width after storage are consistent with the fixed component, which greatly reduces the space occupation rate; at the same time, each component is protected by the chamber in the storage state, reducing the damage of the external environment to the equipment and extending its service life.

[0029] (2) Through the linkage system of the rotating component, transmission component and pedal component, the entire process from storage to unfolding and from use to recycling is fully automated. All actions can be completed by sending instructions through the terminal, without the need for manual on-site operation. This reduces the labor intensity of operators and improves the efficiency of boarding preparation, making it suitable for rapid boarding scenarios.

[0030] (3) The mounting plate of the fixed component supports two methods: bolt detachable connection and welding fixation, which can be adapted to different materials and different structures of the hull; the limit block realizes position adjustment through the first waist-shaped hole, thereby changing the tilt angle of the boarding passage to adapt to different ship-shore height differences or boarding scenarios; the sliding control component supports multiple types of replacement such as electric linear module, hydraulic cylinder, and pneumatic cylinder, which can be flexibly selected according to the power conditions of the hull to reduce equipment adaptation costs.

[0031] (4) The flipping assembly and the linkage rotation assembly are connected to the first rotating shaft through the first sleeve. The support block of the transmission assembly and the fixing groove of the flipping assembly are detachably connected. The connecting rod assembly, the hinge plate, and the fourth rotating shaft are all hinged. The connection between each component is simple and easy to disassemble and replace individually. When the equipment malfunctions, the damaged module can be quickly located and repaired without overall disassembly, reducing maintenance difficulty and time cost. Attached Figure Description

[0032] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a structural diagram of a boarding ladder according to this application. Figure 2 This is a side view of a boarding ladder according to this application. Figure 3 This is a partial sectional view of a boarding ladder according to this application. Figure 4 This is a structural diagram of a fixing component in a boarding ladder according to this application. Figure 5 This is a structural diagram of a tilting component in a boarding ladder according to this application. Figure 6 This is a structural diagram of a linkage rotating component in a boarding ladder according to this application. Figure 7 for Figure 6 A partial sectional view, Figure 8 This is a structural diagram of a transmission component in a boarding ladder according to this application. Figure 9 This is a structural diagram of a step plate in a boarding ladder according to this application.

[0034] In the diagram: 1-Fixing component, 101-Base plate, 102-Slide plate, 103-Side plate, 104-Top plate, 105-First waist-shaped hole, 106-Guide plate, 107-Mounting plate, 108-Rack, 109-Limiting block, 2-Flipping component, 201-Intermediate plate, 202-Fixing groove, 203-First sleeve, 204-Second sleeve, 205-Hinge plate, 3-Linkage rotation component, 301-First rotating shaft, 302-Gear, 303-First bevel gear, 4-Slider, 5-Transmission component, 501-Second rotating shaft, 502-Second bevel gear, 6-Support block, 7-Pedal assembly, 701-Pedal, 702-Third rotating shaft, 703-Third bevel gear, 704-Fourth rotating shaft, 8-Linkage assembly, 801-First link, 802-Second link, 803-Second waist-shaped hole. Detailed Implementation

[0035] The accompanying drawings provide a more detailed description of a boarding ladder according to this application, but this is not intended to limit the scope of the application.

[0036] Depend on Figures 1 to 9 As shown, a boarding ladder includes a fixing component 1, a tilting component 2, a linkage rotating component 3, a transmission component 5, and a step component 7, wherein: The fixing component 1 is fixedly connected to the hull. The fixing component 1 includes a base plate 101, a sliding plate 102, and a guide plate 106. It is connected to the hull via a mounting plate 107 fixed on the base plate 101. The mounting plate 107 is detachably connected to the hull by bolts or fixedly connected to the hull by welding.

[0037] The sliding plate 102 is disposed on both sides of the base plate 101, and the downwardly inclined guide plate 106 is disposed at the end of the base plate 101. The base plate 101 supports the flipping component 2. When the flipping component 2 slides to the end of the base plate 101, it flips downward under the guidance of the guide plate 106 and its own weight.

[0038] A top plate 104 is spaced above the base plate 101 of the fixing component 1, and the base plate 101 and the top plate 104 are fixedly connected by vertically arranged side plates 103. The base plate 101, the top plate 104 and the two side plates 103 form a cavity for housing the flipping component 2 and the pedal component 7.

[0039] The flipping assembly 2 is slidably connected to the fixed assembly 1 via the linkage rotating assembly 3, and is also rotatably connected to the linkage rotating assembly 3. Specifically, the flipping assembly 2 includes an intermediate plate 201, with a first sleeve 203 and a second sleeve 204 respectively at opposite ends. The first sleeve 203 is sleeved with the first rotating shaft 301 of the linkage rotating assembly 3, realizing the rotatable connection between the flipping assembly 2 and the linkage rotating assembly 3. The second sleeve 204 is sleeved with the third rotating shaft 702 of the pedal assembly 7, realizing the rotatable connection between the flipping assembly 2 and the pedal assembly 7.

[0040] The linkage rotation component 3 includes a first rotating shaft 301, on which a gear 302 and a first bevel gear 303 are coaxially fixedly connected, and a slider 4 is rotatably connected at the end of the first rotating shaft 301, which is slidably disposed on the slide plate 102.

[0041] In order to enable the pedal assembly 7 to automatically flip open when the flipping assembly 2 slides to the second half of the fixed assembly 1, in this embodiment, the bottom plate 101 is provided with a rack 108 at the end, which is connected to the gear 302.

[0042] The transmission assembly 5 includes a second rotating shaft 501 and a second bevel gear 502 fixed to both ends of the second rotating shaft 501 along its axial direction. The second rotating shaft 501 is rotatably connected to the flipping assembly 2. Specifically, a fixing groove 202 is provided on both sides of the intermediate plate 201, and a support block 6 is sleeved on the outside of the second rotating shaft 501. The support block 6 is detachably connected to the fixing groove 202.

[0043] The two second bevel gears 502 of the transmission assembly 5 are respectively engaged with the first bevel gear 303 and the third bevel gear 703 of the pedal assembly 7, which is coaxially fixedly connected to the third rotating shaft 702.

[0044] When the flipping component 2 slides to the second half of the fixed component 1, the gear 302 contacts and meshes with the rack 108. The flipping component 2 continues to slide, and the fixed rack 108 drives the gear 302 to rotate. Then, through the transmission of the first bevel gear 303 and the second bevel gears 502 at both ends of the second rotating shaft 501, the third bevel gear 703 is driven to rotate, which in turn drives the pedal assembly 7 to rotate and open, forming the boarding foot pedal.

[0045] To prevent the flipping assembly 2 from completely detaching from the fixing assembly 1, in this embodiment, a limiting block 109 is provided at the end of the slide plate 102 opposite to the guide plate 106. This limiting block 109 is used to block and limit the sliding of the slider 4. A first oblong hole 105 is provided on the side plate 103. The limiting block 109 is fixedly connected to the side plate 103 by bolts passing through the first oblong hole 105, so as to adjust the position of the limiting block 109. Different positions of the limiting block 109 can change the contact position between the flipping assembly 2 and the guide plate 106 when it moves to the end, thereby changing the tilt angle of the flipping assembly 2 when it moves to the end.

[0046] The pedal assembly 7 includes a pedal 701, a third rotating shaft 702 is fixedly disposed at one end of the pedal 701 facing the flip assembly 2, and a fourth rotating shaft 704 is fixed on the pedal 701. The flip assembly 2 is provided with a hinge plate 205.

[0047] In order to increase the connection strength between the pedal assembly 7 and the flip assembly 2, in this embodiment, a connecting rod assembly 8 is connected between the pedal assembly 7 and the flip assembly 2.

[0048] The connecting rod assembly 8 includes a first connecting rod 801 and a second connecting rod 802 that are hinged to each other at their ends. The end of the first connecting rod 801 away from the second connecting rod 802 is hinged to the hinge plate 205. The end of the second connecting rod 802 away from the first connecting rod 801 is provided with a second waist-shaped hole 803. The fourth rotating shaft 704 is slidably disposed in the second waist-shaped hole 803.

[0049] A sliding control component is fixedly mounted on the fixed component 1. This sliding control component is used to control the slider 4 to reciprocate on the slide plate 102. The sliding control component can be an electric linear module, a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic rod.

[0050] The usage steps are as follows: S01, Initial storage state: When not in use, the boarding ladder is retracted to minimize space occupation on the ship and prevent damage from external forces. At this time, the sliding control assembly is in its initial retracted position, causing the slider 4 to stop at the end of the slide plate 102 away from the limit block 109. The flipping assembly 2 and the pedal assembly 7 are completely housed within the cavity formed by the base plate 101, top plate 104, and side plates 103 of the fixing assembly 1. The pedal 701 is pressed against the middle plate 201. The first link 801 and the second link 802 of the linkage assembly 8 are folded, and the fourth pivot 704 is located at the initial end of the second oblong hole 803. The gear 302 is separated from the rack 108 at the end of the base plate 101, and all bevel gears remain stationary. The entire device has a compact structure.

[0051] S02, Deployment Preparation and Command Triggering: When the boarding ladder is needed, the operator sends an deployment command to the sliding control component via the control terminal. The drive output extends towards the limit block 109, thereby causing the connected slider 4 to slide along the slide plate 102.

[0052] S03, Sliding of the flip assembly and pre-start of the pedal: When slider 4 slides on slide plate 102, it drives flip assembly 2 and connected pedal assembly 7 and transmission assembly 5 to move synchronously along base plate 101 toward guide plate 106 via first rotating shaft 301. In the first half of the sliding motion, since gear 302 does not contact rack 108, linkage rotating assembly 3 and transmission assembly 5 remain stationary. Pedal assembly 7 moves synchronously with flip assembly 2, and the first link 801 and second link 802 of linkage assembly 8 remain folded, with pedal 701 maintaining its retracted posture. During this stage, top plate 104 and side plate 103 guide and protect flip assembly 2, preventing it from shifting.

[0053] S04, Pedal assembly automatically deploys: When the flipping component 2 slides to the latter half of the fixed component 1, the gear 302 of the linkage rotating component 3 begins to contact and mesh with the rack 108 at the end of the base plate 101. Since the rack 108 is fixed, as the flipping component 2 continues to slide with the slider 4, the rack 108 generates a reaction force on the gear 302, causing the gear 302 to rotate around the first rotating shaft 301. The gear 302 is coaxially fixed with the first bevel gear 303, thus synchronously driving the first bevel gear 303 to rotate; the first bevel gear 303 meshes with a second bevel gear 502 of the transmission component 5, and then transmits power to the second bevel gear 502 at the other end through the second rotating shaft 501, which in turn drives the third bevel gear 703 meshing with it to rotate.

[0054] The third bevel gear 703 is coaxially fixed with the third shaft 702 of the pedal assembly 7. Its rotation drives the third shaft 704 to rotate, causing the pedal 701 to rotate outward around the third shaft 702 as the axis. During this process, the fourth shaft 704 on the pedal 701 slides along the second oblong hole 803 of the second connecting rod 802, pushing the second connecting rod 802 to rotate around the hinge point with the first connecting rod 801. At the same time, the first connecting rod 801 rotates around the hinge plate 205, causing the connecting rod assembly 8 to gradually unfold from the folded state, providing support for the pedal 701. When the pedal 701 rotates to an angle of 120°-150° with the flipping assembly 2, the fourth shaft 704 slides to the end of the second oblong hole 803, the connecting rod assembly 8 is fully unfolded and forms a rigid support, the pedal assembly 7 stops rotating, and the unfolding action is completed.

[0055] S05, Tilting and positioning of the flip component: After the pedal assembly is deployed, the sliding control component continues to drive the slider 4 to slide towards the guide plate 106. When the slider 4 drives the end of the flipping assembly 2 to contact the guide plate 106, the slider 4 enters the sliding end. Since the guide plate 106 is arranged at a downward inclination, the flipping assembly 2, under the guidance of the guide plate 106 and the combined action of its own weight and that of the pedal assembly 7, flips downward around the first pivot 301. At the same time, the sliding cooperation between the slider 4 and the slide plate 102 provides a stable foundation for the flipping. When the slider 4 slides to be flush with the end of the guide plate 106, the sliding control component stops. At this time, the flipping assembly 2 and the pedal assembly 7 together form an inclined boarding passage. The inclination angle can be pre-adjusted by the position of the limit block 109 to adapt to different ship-shore height differences or boarding requirements.

[0056] S06. Onboard Usage Status: Once the boarding passage is established, personnel can safely board the ship via step 701. During this process, the stability of the step assembly 7 is ensured by multiple structures: the sleeved engagement of the third rotating shaft 702 and the second sleeve 204 provides rotational support; the first link 801 and the second link 802 of the linkage assembly 8 form a triangular stabilizing structure; and the sliding limit of the fourth rotating shaft 704 and the second oblong hole 803 prevents the step 701 from shaking. At the same time, the slider 4 is limited by the sliding plate 102, and the flipping assembly 2 is supported by the guide plate 106 and the base plate 101. The entire device can withstand the load of multiple people boarding the ship simultaneously.

[0057] S07, Recovery and Reset: After boarding is completed, the operator sends a retrieval command, and the sliding control component initiates a reverse action, causing slider 4 to slide along slide plate 102 away from limit block 109. Slider 4 pulls flip assembly 2 to flip upwards and reset along guide plate 106, returning to above bottom plate 101 after disengaging from guide plate 106 and moving horizontally with slider 4; simultaneously, gear 302 moves with slider 4 and meshes with rack 108 in the opposite direction, causing each bevel gear to rotate in the opposite direction, causing pedal 701 to rotate inwards and fold around third pivot 702, and the first link 801 and second link 802 of linkage assembly 8 fold synchronously, and fourth pivot 704 returns to the initial end of second oblong hole 803. When slider 4 stops at limit block 109, sliding control component stops working, flip assembly 2 and pedal assembly 7 are completely stored back in the cavity of fixed assembly 1, and the device returns to its initial stored state.

[0058] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A boarding ladder, characterized in that: It includes a fixed assembly (1), a flipping assembly (2), a linkage rotating assembly (3), a transmission assembly (5), and a pedal assembly (7); wherein: The fixing component (1) is fixedly connected to the hull and is used to house the flipping component (2) and the pedal component (7). The flipping component (2) is slidably connected to the fixed component (1) and rotatably connected to the linkage rotating component (3); The transmission assembly (5) is rotatably connected to the flipping assembly (2), and its two ends are respectively connected to the linkage rotating assembly (3) and the pedal assembly (7). The pedal assembly (7) is rotatably connected to the flip assembly (2). When the flip assembly (2) slides to the second half of the fixed assembly (1), the pedal assembly (7) rotates relative to the flip assembly (2) through the linkage rotating assembly (3) and the transmission assembly (5).

2. The boarding ladder according to claim 1, characterized in that: The fixing component (1) includes a base plate (101), a sliding plate (102), and a guide plate (106); The sliding plate (102) is disposed on both sides of the base plate (101), and the guide plate (106) arranged downwardly is disposed at the end of the base plate (101); The slide plate (102) is provided with a slider (4), and the linkage rotation component (3) is rotatably connected to the slider (4); The base plate (101) supports the flipping component (2). When the flipping component (2) slides to the end of the base plate (101), it flips downward under the guidance of the guide plate (106) and its own weight.

3. The boarding ladder according to claim 2, characterized in that: A sliding control component is fixed on the fixed component (1), which is used to control the slider (4) to slide back and forth on the slide plate (102).

4. The boarding ladder according to claim 2, characterized in that: The linkage rotation component (3) includes a first rotating shaft (301), on which a gear (302) and a first bevel gear (303) are coaxially fixedly connected, and the first rotating shaft (301) is rotatably connected to the slider (4) and the flipping component (2); The bottom plate (101) is provided with a rack (108) at its end, which is connected to the gear (302). The transmission assembly (5) includes a second rotating shaft (501) and a second bevel gear (502) fixed at both ends of the second rotating shaft (501) along its axial direction. The second rotating shaft (501) is rotatably connected to the flipping assembly (2). The pedal assembly (7) includes a third bevel gear (703). The two second bevel gears (502) of the transmission assembly (5) are respectively engaged with the first bevel gear (303) and the third bevel gear (703).

5. The boarding ladder according to claim 4, characterized in that: The flipping assembly (2) includes an intermediate plate (201), with a first sleeve (203) and a second sleeve (204) respectively provided at opposite ends of the intermediate plate (201), wherein the first sleeve (203) is sleeved with the first rotating shaft (301); The pedal assembly (7) includes a third rotating shaft (702) that is coaxially fixedly connected to the third bevel gear (703), and the second sleeve (204) is sleeved with the third rotating shaft (702).

6. The boarding ladder according to claim 5, characterized in that: The fixing component (1) has a top plate (104) spaced above the bottom plate (101), and the bottom plate (101) and the top plate (104) are fixedly connected by vertically arranged side plates (103).

7. The boarding ladder according to claim 6, characterized in that: The end of the slide plate (102) opposite to the guide plate (106) is provided with a limiting block (109), which is used to block and limit the sliding of the slider (4).

8. The boarding ladder according to claim 5, characterized in that: The middle plate (201) has fixing grooves (202) on both sides; the second rotating shaft (501) is fitted with a support block (6), and the support block (6) is detachably connected to the fixing groove (202).

9. The boarding ladder according to claim 5, characterized in that: A linkage assembly (8) connects the pedal assembly (7) and the flip assembly (2).

10. The boarding ladder according to claim 9, characterized in that: The pedal assembly (7) includes a pedal (701), a third rotating shaft (702) is fixedly disposed at one end of the pedal (701) facing the flip assembly (2), and a fourth rotating shaft (704) is fixed on the pedal (701). The flipping assembly (2) is provided with a hinge plate (205); The link assembly (8) includes a first link (801) and a second link (802) hinged to each other at their ends. The end of the first link (801) away from the second link (802) is hinged to the hinge plate (205). The end of the second link (802) away from the first link (801) is provided with a second waist-shaped hole (803). The fourth rotating shaft (704) is slidably disposed in the second waist-shaped hole (803).

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