Expansion type boarding hanging ladder

Abstract

An expansion type boarding hanging ladder comprises a main ladder, the main ladder comprises two side rods and a plurality of pedals connected between the two side rods, the expansion type boarding hanging ladder further comprises a supporting mechanism and a turnover mechanism, the supporting mechanism comprises a box body, a transverse shaft is rotationally installed at the upper end of one side of the box body, and the upper ends of the two side rods are fixedly connected with the two ends of the transverse shaft respectively; the turnover mechanism comprises a first gear motor, the first gear motor is installed in the box body, a first bevel gear is installed on an output shaft of the first gear motor, a second bevel gear is installed on the transverse shaft, and the first bevel gear and the second bevel gear are in meshing transmission. The turnover mechanism can drive the main ladder to turn over, operation obstacles caused in the sailing process are avoided, passing, boarding and departing of a ship are facilitated, the efficiency and safety of the boarding and departing process are improved, and on the other hand, the turnover main ladder is convenient to maintain, clean and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of ship engineering or ship equipment, in particular to an expandable boarding suspension ladder. Background Art

[0002] A boarding suspension ladder is a common ship accessory and one of the necessary equipment to ensure the safe operation of a ship. Its function is to provide a safe, stable and convenient passage for passengers and crew to board and leave the ship safely and quickly. The quality, function and performance of the boarding suspension ladder have an important impact on the safety and economy of the ship. Existing boarding suspension ladders are usually fixedly installed on the ship, and their fixed structures cannot be assembled and disassembled portably, which makes it difficult and time-consuming to clean, repair or replace the suspension ladder. Moreover, when the hull needs to pass through a narrow passage, the existing boarding suspension ladder may become an operating obstacle, resulting in inconvenient ship passage. In addition, in the face of complex terrains or emergencies, the fixed angle and fixed height of the existing boarding suspension ladder limit the convenience of boarding and leaving the ship, making it difficult to adapt to different shipping environments and posing potential safety hazards and risks.

[0003] For the above reasons, existing boarding suspension ladders have problems such as being unable to retract and extend, operating obstacles, safety risks, and difficulties in cleaning and maintenance. Content of the Utility Model

[0004] The purpose of the utility model is to provide an expandable boarding suspension ladder. The main ladder can be driven to flip by a flipping mechanism, avoiding operating obstacles caused during navigation, facilitating ship passage, boarding and leaving the ship, improving the efficiency and safety of the boarding and leaving process. On the other hand, the main ladder that can be flipped is convenient for maintenance, cleaning and replacement.

[0005] To achieve the above purpose, the utility model provides an expandable boarding suspension ladder, which includes a main ladder. The main ladder includes two side rods and a plurality of pedals connected between the two side rods. It also includes a support mechanism and a flipping mechanism. The support mechanism includes a box body. One side of the upper end of the box body is rotatably installed with a horizontal shaft, and the upper ends of the two side rods are respectively fixedly connected to both ends of the horizontal shaft. The flipping mechanism includes a first reduction motor installed inside the box body. A first bevel gear is installed on the output shaft of the first reduction motor, and a second bevel gear is installed on the horizontal shaft. The first bevel gear and the second bevel gear are meshed for transmission.

[0006] A ladder is also installed on the side of the box body away from the main ladder.

[0007] It also includes a secondary ladder and a lifting mechanism. The structure of the secondary ladder is the same as that of the main ladder. Guide rails are provided on the two side rods of the main ladder on the side far from the box body. A sliding structure is provided on one side of the two side rods of the secondary ladder. The sliding structure is slidably connected with the guide rail in a sliding manner. The lifting mechanism is installed on the main ladder, and the secondary ladder is also connected to the lifting mechanism. The secondary ladder is driven by the lifting mechanism to telescopically slide along the guide rail in a directional manner.

[0008] The guide rail is a groove structure, and the sliding structure is a convex-shaped skateboard. The convex-shaped skateboard is slidably connected with the groove structure in a sliding manner.

[0009] The guide rail is a groove structure, and the sliding structure is a side plate. Support wheel sets are respectively installed on both sides of the side plate. The support wheel sets are slidably matched with the guide rail.

[0010] A limiting member is provided at the top of the side plate, and the limiting member slides within the guide rail.

[0011] The lifting mechanism includes a second reduction motor, a ball screw, a nut seat, and a bearing seat. The second reduction motor is installed on the side of the main ladder far from the secondary ladder. Two bearing seats are installed on the main ladder at intervals below the second reduction motor. Both ends of the ball screw are rotatably connected to the two bearing seats respectively. The output shaft of the second reduction motor is connected and transmitted to one end of the ball screw. A connecting member is installed on the secondary ladder, and the connecting member extends to the side of the main ladder far from the secondary ladder. A nut seat is installed on the connecting member. The ball screw is threadedly engaged with the nut seat.

[0012] The utility model has the following technical effects compared with the prior art:

[0013] 1. The utility model can drive the main ladder to flip through the flipping mechanism, avoiding operation obstacles caused during navigation, facilitating ship passage, boarding, and disembarking, improving the efficiency and safety of the boarding and disembarking process. On the other hand, the main ladder that can be flipped is convenient for its maintenance, cleaning, and replacement.

[0014] 2. The utility model also includes a secondary ladder and a lifting mechanism. The structure of the secondary ladder is the same as that of the main ladder. Guide rails are provided on the two side rods of the main ladder on the side far from the box body. A sliding structure is provided on one side of the two side rods of the secondary ladder. The sliding structure is slidably connected with the guide rail in a sliding manner. The lifting mechanism is installed on the main ladder, and the secondary ladder is also connected to the lifting mechanism. The secondary ladder is driven by the lifting mechanism to telescopically slide along the guide rail in a directional manner, so as to adjust the total length of the main ladder and the secondary ladder.

[0015] 3. Through the flipping mechanism and the lifting mechanism, the hanging ladder of the utility model can flexibly adapt to the boarding / disembarking requirements of different angles, heights, and lengths, meet various usage scenarios, and improve the applicability and practicality of the hanging ladder. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art.

[0017] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 Schematic diagram of the three-dimensional structure and bottom view of the main ladder of the present utility model;

[0019] Figure 3 Schematic diagram of the three-dimensional structure and top view of the auxiliary ladder of the present utility model;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the support mechanism of the present utility model;

[0021] Figure 5 Schematic diagram of the three-dimensional structure of the flipping mechanism of the present utility model;

[0022] Figure 6 Schematic diagram of the three-dimensional structure of the lifting mechanism of the present utility model;

[0023] Figure 7 Schematic diagram of the three-dimensional structure of the second reduction motor and the ball screw of the present utility model;

[0024] Figure 8 Schematic diagram of the three-dimensional structure of the support wheel set of the present utility model;

[0025] Figure 9 Schematic diagram of the three-dimensional structure of an embodiment of the present utility model.

[0026] In the figure:

[0027] Main ladder 1, auxiliary ladder 2, support mechanism 3, flipping mechanism 4, lifting mechanism 5, side rod 6, pedal 7, guide rail 8, side plate 9, limiting member 10, wheel shaft hole 11, connecting member 12, box body 14, box cover 15, ladder step 16, horizontal shaft 17, axial limiter 18, motor 19, reducer 20, first bevel gear 21, second bevel gear 22, second reduction motor 23, ball screw pair 24, support wheel set 25, ball screw 26, nut seat 27, bearing seat 28, wheel shaft 29, pulley 30, wheel shaft sleeve 31, fixing bolt 32, deck 33. Detailed implementation manners

[0028] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0029] Embodiment 1:

[0030] Please refer to Figure 1 、 2 、4, and 5. An expandable boarding ladder includes a main ladder 1. The main ladder 1 includes two side rods 6 and a plurality of treads 7 connected between the two side rods 6. It also includes a support mechanism 3 and a flipping mechanism 4. The support mechanism 3 includes a box body 14. A transverse shaft 17 is rotatably installed at the upper end of one side of the box body 14. The upper ends of the two side rods 6 are respectively fixedly connected to the two ends of the transverse shaft 17. The flipping mechanism 4 includes a first reduction motor. The first reduction motor is installed inside the box body 14. A first bevel gear 21 is installed on the output shaft of the first reduction motor. A second bevel gear 22 is installed on the transverse shaft 17. The first bevel gear 21 and the second bevel gear 22 are in meshing transmission. The main ladder 1 can be driven to flip by the flipping mechanism 4, avoiding operation obstacles during navigation, facilitating ship passage, boarding, and disembarking, improving the efficiency and safety of the boarding / disembarking process. On the other hand, the main ladder that can be flipped is convenient for maintenance, cleaning, and replacement.

[0031] Specifically, the box body 14 is installed on the side of the ship. When the main ladder 1 is about to cause operation obstacles during navigation, the first reduction motor can be started to make the main ladder 1 flip clockwise, and the main ladder 1 can be flipped onto the deck. In this state, since the main ladder 1 is flipped onto the deck, it is convenient for its maintenance, cleaning, and replacement.

[0032] In addition, since the main ladder 1 can be flipped to adjust the angle, the main ladder 1 can form an inclined ladder with the dock. Please refer to Figure 9 This facilitates boarding or disembarking and improves the convenience of boarding or disembarking.

[0033] Specifically, as Figure 2 shown, the main body of the main ladder 1 includes two vertical parallel side rods 6. The treads 7 are located between the two side rods 6 and are fixedly connected to the two side rods 6. Optionally, the treads 7 and the side rods 6 are an integrally formed welded structure.

[0034] Please refer to Figure 4, the support mechanism 3 includes a box body 14 and a step 16, and the step 16 is assembled on the side of the box body 14 away from the main ladder 1. The two sides of the box body 14 are inverted right trapezoids, the side close to the step 16 is a vertical surface, and the side close to the main ladder 1 is an inclined surface, reserving sufficient buffer space for the movement track of the main ladder 1. The box body 14 is arranged in a way that is wider at the top and narrower at the bottom. Its lower half is a solid structure and is fixedly connected to the ship deck by bolt connection or other detachable connection methods. Its upper half is a cavity structure, and the bottom of the cavity is used for fixedly installing the first reduction motor. Through holes are opened on the side wall of the box body 14, and the inner diameter of the through holes is slightly larger than the diameter of the cross shaft 17 to form a clearance fit. Two axial limiters 18 are respectively installed on both outer walls at the connection of the box body 14 and the cross shaft 17, and the inner diameter of the axial limiter 18 is kept consistent with the diameter of the cross shaft 17 to form an interference fit; both ends of the cross shaft 17 are fixedly connected to the side rods 6 of the main ladder 1 respectively, and the cross shaft 17 becomes the axis of the main ladder 1. The connection between the box body 14 and the main ladder 1 is realized through the cross shaft 17. The step 16 includes two or more steps, and its back contacts the vertical surface of the box body 14, and the two can be connected by a detachable assembly method or can be directly made into an integral structure.

[0035] Further, a box cover 15 that can be opened is provided on the box body 14, which is convenient for installing the first reduction motor. In this embodiment, the first reduction motor includes a motor 19 and a reducer 20.

[0036] A step 16 is also installed on the side of the box body 14 away from the main ladder 1, which is convenient for personnel to get on and off the box body 14. The step 16 includes two or more steps, and its back is connected to the box body 14, and the two can be connected by a detachable assembly method or can be directly made into an integral structure.

[0037] Embodiment Two:

[0038] On the basis of Embodiment One, referring to Figure 1 、 2 、3、6、7, it further includes a secondary ladder 2 and a lifting mechanism 5. The secondary ladder 2 has the same structure as the main ladder 1. Guide rails 8 are provided on both side rods 6 of the main ladder 1 on the side away from the box body 14. A sliding structure is provided on one side of the two side rods 6 of the secondary ladder 2, and the sliding structure is slidably connected with the guide rails 8 in a sliding fit. The lifting mechanism 5 is installed on the main ladder 1, and the secondary ladder 2 is also connected to the lifting mechanism 5. The secondary ladder 2 is driven by the lifting mechanism 5 to telescopically slide along the guide rails 8 in a fixed direction, so as to be able to adjust the total length of the main ladder 1 and the secondary ladder 2.

[0039] In one embodiment, the guide rail 8 is a groove structure, and the sliding structure is a convex skateboard, and the convex skateboard is slidably connected with the groove structure in a sliding fit.

[0040] In another embodiment, referring to Figure 3 、 5, the guide rail 8 is a groove structure, and the sliding structure is a side plate 9. Support wheel sets 25 are respectively installed on both sides of the side plate 9, and the support wheel sets 25 cooperate with the guide rail 8 for sliding.

[0041] Specifically, refer to Figure 8 , the support wheel set 25 includes a wheel axle 29, a pulley 30, a wheel axle sleeve 31 and a fixing bolt 32. The axles of the wheel axle 29, the pulley 30 and the wheel axle sleeve 31 are on the same axis. The pulley 30 is nested on the wheel axle 29 and slides in the guide rail 8. The wheel axle sleeve 31 provides support and fixation for the pulley 30. The wheel axle 29, the pulley 30 and the wheel axle sleeve 31 are installed on the side plate 9 of the auxiliary ladder 2. Refer to Figure 3 , a wheel axle hole 11 is provided on the side plate 9. The wheel axle 29 passes through the wheel axle hole 11, and the fixing bolt 32 is installed on the other side to fix the pulley 30. The support wheel sets 25 are symmetrically arranged on both sides of the side plate 9 in an even number of two or more.

[0042] Furthermore, a limiting member 10 is provided at the top of the side plate 9, and the limiting member 10 slides in the guide rail 8. The limiting member 10 is T-shaped to perform sliding limit on the auxiliary ladder 2 and prevent the auxiliary ladder 2 from shaking during telescoping.

[0043] The lifting mechanism 5 can adopt an oil cylinder or an electric cylinder. In this embodiment, refer to Figure 6 、 7 , the lifting mechanism 5 includes a second reduction motor 23 and a ball screw pair 24. The ball screw pair 24 includes a ball screw 26, a nut seat 27 and a bearing seat 28. The second reduction motor 23 is installed on one side of the main ladder 1 away from the auxiliary ladder 2. Two bearing seats 28 are installed on the main ladder 1 at intervals below the second reduction motor 23. Both ends of the ball screw 26 are rotatably connected to the two bearing seats 28 respectively. The output shaft of the second reduction motor 23 is connected to one end of the ball screw 26 for transmission. A connecting member 12 is installed on the auxiliary ladder 2, and the connecting member 12 extends to the side of the main ladder 1 away from the auxiliary ladder 2. A nut seat 27 is installed on the connecting member 12, and the ball screw 26 is screwed and matched with the nut seat 27. By rotating the second reduction motor 23 to drive the ball screw 26 to rotate, the telescopic movement of the auxiliary ladder 2 is driven.

[0044] The working principle or operation process of the present utility model is as follows:

[0045] Refer to Figure 9 , before use, use a crane to lift the present utility model to the edge of the platform of the deck 33, and use bolts to fixedly connect the box body 14 of the support mechanism 3 to the deck 33 of the ship to ensure stability. Install the ladder 16 to facilitate the operators to get on and off the box body 14. The operators debug the motor 19, the reducer 20 and the gear transmission system in the flipping mechanism 4. After debugging, fix the box cover 15 to the box body 14 to protect the equipment in the installed box body 14 from interference and damage.

[0046] During use, the operator activates the suspension ladder and starts the motor 19 to control the angle of the suspension ladder through the flipping mechanism 4; the motor 19 rotates to transmit torque to the reducer 20, the reducer 20 controls the rotation of the first helical gear 21, the first helical gear 21 drives the second helical gear 22 to rotate, the second helical gear 22 drives the cross shaft 17 to rotate, and the cross shaft 17 drives the main ladder 1 to rotate, so that the suspension ladder can adapt to the boarding / disembarking requirements at different heights.

[0047] When the length of the suspension ladder is insufficient, the operator starts the second reduction motor 23, the second reduction motor 23 drives the ball screw 26 to rotate, the nut seat 27 moves linearly along the ball screw 26, and the nut seat 27 drives the auxiliary ladder 2 to move linearly relative to the main ladder 1 along the guide rail 8 for a preset stroke, realizing the change of the length of the suspension ladder and adapting to the boarding / disembarking requirements at different distances. The lifting state of the main ladder 1 can be adjusted through the flipping mechanism 4 as needed, and the folding and lowering states of the auxiliary ladder 2 can be adjusted through the lifting mechanism 5 as needed, making the boarding process more convenient. The operation results of the expandable boarding suspension ladder are as Figure 9 shown.

Claims

1. An expandable boarding ladder, comprising a main ladder (1), the main ladder (1) comprising two side rods (6) and a plurality of pedals (7) connected between the two side rods (6), characterized in that: The invention also comprises a supporting mechanism (3) and a flipping mechanism (4), wherein the supporting mechanism (3) comprises a box body (14), a horizontal shaft (17) is rotatably mounted on an upper end of one side of the box body (14), and the upper ends of the two side rods (6) are respectively fixedly connected to the two ends of the horizontal shaft (17), and the flipping mechanism (4) comprises a first reduction motor, which is mounted inside the box body (14), a first bevel gear (21) is mounted on the output shaft of the first reduction motor, and a second bevel gear (22) is mounted on the horizontal shaft (17), and the first bevel gear (21) and the second bevel gear (22) are meshed and driven.

2. The expandable boarding ladder according to claim 1, characterized in that: The box body (14) is also provided with a step (16) on a side away from the main ladder (1).

3. The expandable boarding ladder according to claim 1, characterized in that: The invention also comprises an auxiliary ladder (2) and a lifting mechanism (5), wherein the auxiliary ladder (2) has the same structure as the main ladder (1), and guide rails (8) are arranged on the two side rods (6) of the main ladder (1) on the side away from the box body (14), and a sliding structure is arranged on one side of the two side rods (6) of the auxiliary ladder (2), and the sliding structure is connected to the guide rails (8) in a sliding manner. The lifting mechanism (5) is installed on the main ladder (1), and the auxiliary ladder (2) is also connected to the lifting mechanism (5). The auxiliary ladder (2) is driven by the lifting mechanism (5) to slide along the guide rails (8) in a directionally telescopic manner.

4. The expandable boarding ladder according to claim 3, characterized in that: The guide rail (8) is a groove structure, and the sliding structure is a convex slide plate, and the convex slide plate is connected to the groove structure in a sliding manner.

5. The expandable boarding ladder according to claim 3, characterized in that: The guide rail (8) is a groove structure, and the sliding structure is a side plate (9). Support wheel groups (25) are respectively installed on both sides of the side plate (9), and the support wheel groups (25) slide in cooperation with the guide rail (8).

6. The expandable boarding ladder according to claim 5, characterized in that: A limiting member (10) is provided on the top of the side plate (9), and the limiting member (10) slides in the guide rail (8).

7. The expandable boarding ladder according to claim 3, characterized in that: The lifting mechanism (5) comprises a second reduction motor (23) and a ball screw pair (24), the ball screw pair (24) comprising a ball screw (26), a nut seat (27) and a bearing seat (28), the second reduction motor (23) being mounted on a side of the main ladder (1) away from the auxiliary ladder (2), two bearing seats (28) being mounted on the main ladder (1) at intervals below the second reduction motor (23), two ends of the ball screw (26) being rotatably connected to the two bearing seats (28), an output shaft of the second reduction motor (23) being connected to one end of the ball screw (26) for transmission, a connecting member (12) being mounted on the auxiliary ladder (2), the connecting member (12) extending to a side of the main ladder (1) away from the auxiliary ladder (2), a nut seat (27) being mounted on the connecting member (12), the ball screw (26) being rotationally connected to the nut seat (27).

Images