Two-end height self-adaptive ladder for lifting platform

Abstract

The invention relates to the field of ship gangway ladder technical equipment.The two-end height self-adaptive ladder for the lifting platform comprises a ladder frame, the lifting platform is hinged to the top end of the ladder frame, a ladder adjusting assembly is arranged in the ladder frame, and the ladder adjusting assembly and the ladder frame are arranged in parallel; the end of the step adjusting assembly is hinged to the lifting platform. The ship gangway ladder has the advantages that the ship gangway ladder can conveniently adapt to the gradient condition under the influence of tide shaking, the purpose that the steps are kept parallel to the ground is achieved, and the comfort of pedestrians is achieved.

Description

Technical Field

[0001] The present application relates to the field of ship gangway technology equipment, and in particular to a ladder with adaptive heights at both ends for a lifting platform. Background Art

[0002] Gangways are passage facilities between ships and the outside world. Passenger ships should be equipped with gangways, and other types of large and medium-sized ships should also be equipped with gangways. Small boats are generally not equipped with gangways. Gangways are generally arranged at the edge of the deck of the lowest side passage on both sides of the ship that is not closed by the hull outer plating. According to the size and use needs of the ship, one gangway is usually installed on each side. Large passenger ships should consider installing two gangways on each side. When a gangway is installed on each side of the ship, it should be located behind the midship of the ship or near the superstructure to facilitate people to get on and off the gangway. The ladder opening can be towards the stern or the bow, but the position of the gangway should be such that after it is lowered, it is in a relatively straight part of the hull outer plating.

[0003] Regarding the above-mentioned related technologies, the inventor believes that after the ship docks, although the gangway is lowered, the platform height changes with the tide under the influence of the tide, and the original gangway steps cannot be adjusted in real time, resulting in poor passage for personnel. Summary of the invention

[0004] In order to facilitate the adaptive slope of the ship's gangway under the influence of tidal sway, the present application provides a ladder with adaptive heights at both ends for a lifting platform.

[0005] The present application provides a ladder with self-adaptive height at both ends for a lifting platform, which adopts the following technical solution:

[0006] A ladder with self-adaptive heights at both ends for a lifting platform comprises a ladder frame, the top end of the ladder frame is hingedly provided with a lifting platform, a ladder adjustment component is provided inside the ladder frame, the ladder adjustment component is arranged parallel to the ladder frame, and the end of the ladder adjustment component is hingedly provided with the lifting platform.

[0007] Optionally, the step adjustment assembly includes an adjustment beam, and a plurality of parallel step steps are hinged inside the step frame, one end of the step step is hinged to the step frame, and the other end of the step step is hinged to the adjustment beam, a first adjustment portion is provided at one end of the adjustment beam close to the lifting platform, and a second adjustment portion is provided on the side of the adjustment beam close to the bottom end of the step frame, and the first adjustment portion and the second adjustment portion are arranged parallel to the step step.

[0008] Optionally, a hinge point between the lifting platform and the step frame is hinged to one end of the first adjusting part, and a hinge point between the lifting platform and the adjusting beam is hinged to the other end of the first adjusting part.

[0009] Optionally, one end of the second adjusting portion is hinged to the step frame, and the other end of the second adjusting portion is hinged to the adjusting beam.

[0010] Optionally, the bottom end of the step frame is rotatably connected to a first roller, the bottom end of the adjustment beam is rotatably connected to a second roller, and the distance between the first roller and the second roller is equal to the length of the second adjustment portion.

[0011] Optionally, armrests are provided on the first adjustment portion and the second adjustment portion, and the top walls of the armrests are arranged parallel to the first adjustment portion.

[0012] Optionally, the armrest includes a first supporting vertical beam located on the first adjusting portion, a second supporting vertical beam is arranged on the second adjusting portion, the first supporting vertical beam and the second supporting vertical beam are parallel, and supporting cross beams are arranged at the top ends of the first supporting vertical beam and the second supporting vertical beam, and both ends of the supporting cross beam are respectively hinged to the first supporting vertical beam and the second supporting vertical beam.

[0013] Optionally, an auxiliary support vertical beam is arranged between the first support vertical beam and the second support vertical beam, the bottom end of the auxiliary support vertical beam is fixed to the step, and the top end of the auxiliary support vertical beam is hinged to the support cross beam.

[0014] Optionally, an auxiliary support cross beam is horizontally arranged between the first support vertical beam and the second support vertical beam, one end of the auxiliary support cross beam is hinged to the first support vertical beam, the other end of the auxiliary support cross beam is hinged to the second support vertical beam, and the side wall of the auxiliary support cross beam is hinged to the auxiliary support vertical beam.

[0015] Optionally, the upper surface of the step is provided with anti-slip protrusions.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The rollers under the ladder frame and the ladder adjustment assembly roll as the platform rises and falls. The ladder frame and the ladder adjustment assembly change their angles, driving the lifting platform to change the angle with the ladder frame and the ladder adjustment assembly. Due to the principle of the parallelogram four-bar linkage, the steps of the ladder always remain parallel to the ground. At this time, the vertical rod of the handrail remains perpendicular to the steps of the ladder, while the longitudinal rod of the handrail and the handrail connecting rod remain parallel to the ladder frame. The purpose of keeping the steps of the ladder parallel to the ground is achieved, and the comfort of pedestrians is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a ladder with adaptive heights at both ends for a lifting platform in an embodiment of the present application.

[0019] Figure 2 It is a bottom view of a ladder with adaptive heights at both ends for a lifting platform in an embodiment of the present application.

[0020] Figure 3 It is a cross-sectional view of a ladder with adaptive heights at both ends for a lifting platform in an embodiment of the present application.

[0021] Figure 4 It is a structural schematic diagram of a limit plate with adaptive height steps at both ends for a lifting platform in an embodiment of the present application.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. step frame; 11. sliding end; 12. follower end; 13. first roller; 14. limit plate; 2. lifting platform; 21. platform surface; 22. connecting plate; 3. step; 4. step adjustment assembly; 41. adjustment beam; 411. second roller; 42. first adjustment part; 43. second adjustment part; 5. handrail; 51. first supporting vertical beam; 52. second supporting vertical beam; 53. auxiliary supporting vertical beam; 54. supporting horizontal beam; 55. auxiliary supporting horizontal beam. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] The present application embodiment discloses a ladder with two ends and self-adaptive height for a lifting platform. Figure 1 , Figure 2A ladder with two ends and self-adaptive height for a lifting platform includes a ladder frame 1, a lifting platform 2 is arranged at one end of the ladder frame 1 close to the hull, and the lifting platform 2 is hinged to the ladder frame 1. The ladder frame 1 is a frame-shaped structure, and a ladder step 3 is arranged inside the ladder frame 1, and the ladder step 3 is hinged to the ladder frame 1, and a ladder adjustment component 4 is arranged below the ladder step 3. The ladder adjustment component 4 can drive the ladder step 3 to rotate inside the ladder frame 1 according to the bottom end state of the lifting platform 2 and the ladder frame 1, and self-adaptively adjust the angle of the ladder step 3. A handrail 5 is arranged on the side of the ladder step 3 away from the ladder adjustment component 4, and the handrail 5 can be adjusted according to the angle of the ladder step 3, so as to make the top of the handrail 5 parallel to the ladder step 3.

[0027] The ladder frame 1 is a rectangular frame structure, and the end of the ladder frame 1 that is in contact with the ground is a sliding end 11 , and the end of the ladder frame 1 that is hinged to the lifting platform 2 is a follower end 12 .

[0028] The step platform includes a platform surface 21, and two connecting plates 22 are relatively arranged on one side of the platform surface 21 close to the step frame 1. One end of the connecting plate 22 is fixedly connected to the platform surface 21, and the other end of the connecting plate 22 is hinged to the outer wall of the step frame 1, so that the step surface is relatively hinged to the step frame 1 through the connecting plate 22, and the platform surface 21 can be adjusted in angle with the step frame 1.

[0029] Reference Figure 2 , Figure 3 The step 3 is a rectangular plate structure, and a plurality of step steps 3 are equidistantly arranged along the length direction of the step frame 1, and the plurality of step steps 3 are respectively hinged to the step frame 1, and a side wall of the step step 3 is hinged to the step frame 1 on a side close to the sliding end 11 of the step frame 1, and a side wall of the step step 3 is hinged to the step adjustment assembly 4 on a side close to the follower end 12 of the step frame 1.

[0030] The step adjustment assembly 4 includes an adjustment beam 41 located below the step frame 1. The adjustment beam 41 is arranged parallel to the step frame 1. A first adjustment portion 42 is arranged on the side of the adjustment beam 41 close to the step platform, and a second adjustment portion 43 is arranged on the side of the adjustment beam 41 away from the step platform.

[0031] The first adjustment portion 42 has the same structure as the step 3. The side of the first adjustment portion 42 facing away from the platform surface 21 is hinged to the step frame 1, and the side of the first adjustment portion 42 close to the platform surface 21 is hinged to the platform surface 21. The hinge point between the first adjustment portion 42 and the platform surface 21 is also hinged to the end of the adjustment beam 41.

[0032] The second adjustment portion 43 has the same structure as the step 3 , and the second adjustment portion 43 is hinged to the step frame 1 on one side close to the sliding end 11 of the step frame 1 , and is hinged to the adjustment beam 41 on the other side away from the sliding end 11 of the step frame 1 .

[0033] Reference Figure 2 , Figure 3 The side walls of the adjusting beam 41 are respectively hingedly connected to the side of the plurality of steps 3 close to the platform surface 21. The end of the ladder frame 1 close to the sliding end 11 is rotatably connected to the first roller 13, and the end of the adjusting beam 41 close to the sliding end 11 is rotatably connected to the second roller 411, and the spacing between the first roller 13 and the second roller 411 is equal to the length of the second adjusting portion 43.

[0034] A parallelogram structure is formed by the rotation center of the first roller 13 , the rotation center of the second roller 411 , the hinge point between the adjustment beam 41 and the first adjustment portion 42 , and the hinge point between the platform surface 21 and the step frame 1 .

[0035] When the first roller 13 and the second roller 411 fall on the ground, the connecting line of the first roller 13 and the second roller 411 is always parallel to the platform surface 21. When the sliding end 11 of the ladder frame 1 moves toward the side close to the platform surface 21 and the angle between the ladder frame 1 and the bottom wall of the platform surface 21 becomes smaller, the first adjustment part 42 and the second adjustment part 43 are driven to rotate synchronously, so that the first adjustment part 42, the second adjustment part 43 and the ladder step 3 are always parallel to the ladder platform.

[0036] When the sliding end 11 of the ladder frame 1 moves toward the side away from the platform surface 21, the angle between the ladder frame 1 and the bottom wall of the platform surface 21 increases, driving the first adjustment part 42 and the second adjustment part 43 to rotate synchronously, so that the first adjustment part 42, the second adjustment part 43 and the ladder step 3 are always parallel to the ladder platform.

[0037] Reference Figure 3 , Figure 4 The ladder frame 1 is also fixedly connected to a limiting plate 14 at the bottom end of the ladder step 3. The limiting plate 14 is horizontally arranged, and the limiting plate 14 is located on the side of the bottom end of the ladder step 3 close to the sliding end 11, so that the rotation angle of the ladder step 3 is limited by the limiting plate 14.

[0038] Reference Figure 1The handrail 5 includes a first support vertical beam 51, the bottom end of which is fixedly connected to the top wall of the first adjustment portion 42, and the first support vertical beam 51 is vertically arranged on the upper surface of the first adjustment portion 42. A second support vertical beam 52 is vertically arranged on the upper surface of the second adjustment portion 43, and the second support vertical beam 52 is fixedly connected to the second adjustment portion 43. The first support vertical beam 51 is parallel to the second support vertical beam 52, and the first support vertical beam 51 and the second support vertical beam 52 have the same height.

[0039] An auxiliary support vertical beam 53 is disposed between the first support vertical beam 51 and the second support vertical beam 52. A plurality of auxiliary support vertical beams 53 are provided, and the bottom ends of the plurality of auxiliary support vertical beams 53 are opposite to and relatively fixedly connected to the step 3. The auxiliary support vertical beam 53 is disposed perpendicularly to the step 3, and the auxiliary support vertical beam 53 is disposed parallel to the first support vertical beam 51, and the height of the auxiliary support vertical beam 53 is the same as the height of the first support vertical beam 51.

[0040] A support crossbeam 54 is hingedly provided at the top end of the first support vertical beam 51 , and the other end of the support crossbeam 54 is hingedly provided with the second support vertical beam 52 , and the side wall of the support crossbeam 54 is hingedly provided with the auxiliary support vertical beam 53 , and the support crossbeam 54 is parallel to the ladder frame 1 .

[0041] An auxiliary support beam 55 is also provided between the first support vertical beam 51 and the second support vertical beam 52. The auxiliary support beam 55 is provided in parallel with the support beam 54, and one end of the auxiliary support beam 55 is hinged to the first support vertical beam 51, and the other end of the auxiliary support beam 55 is hinged to the second support vertical beam 52. The auxiliary support beam 55 penetrates the side wall of the auxiliary support vertical beam 53 and is relatively rotatably connected.

[0042] A parallelogram structure is formed by the ladder frame 1 , the first supporting vertical beam 51 , the second supporting vertical beam 52 and the supporting cross beam 54 , so that the supporting cross beam 54 can always be parallel to the supporting frame, thereby facilitating adjustment through the handrail 5 .

[0043] The upper surface of the step 3 is also provided with anti-slip protrusions to improve the safety of use.

[0044] In this application, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A ladder with two ends and self-adaptive height for a lifting platform, characterized in that: The invention comprises a step frame (1), a lifting platform (2) being hingedly arranged at the top end of the step frame (1), a step adjustment component (4) being arranged inside the step frame (1), the step adjustment component (4) being arranged parallel to the step frame (1), and an end of the step adjustment component (4) being hingedly arranged to the lifting platform (2).

2. The ladder with two ends and self-adaptive height for a lifting platform according to claim 1, characterized in that: The step adjustment assembly (4) comprises an adjustment beam (41); a plurality of mutually parallel step steps (3) are hingedly connected inside the step frame (1); one end of the step step (3) is hingedly connected to the step frame (1); the other end of the step step (3) is hingedly connected to the adjustment beam (41); a first adjustment portion (42) is arranged at one end of the adjustment beam (41) close to the lifting platform (2); a second adjustment portion (43) is arranged at one side of the adjustment beam (41) close to the bottom end of the step frame (1); the first adjustment portion (42) and the second adjustment portion (43) are arranged parallel to the step step (3).

3. The ladder with two ends and self-adaptive height for a lifting platform according to claim 2, characterized in that: The hinge point between the lifting platform (2) and the step frame (1) is hinged to one end of the first adjusting part (42), and the hinge point between the lifting platform (2) and the adjusting beam (41) is hinged to the other end of the first adjusting part (42).

4. The ladder with two ends and self-adaptive height for a lifting platform according to claim 2, characterized in that: One end of the second adjusting portion (43) is hinged to the step frame (1), and the other end of the second adjusting portion (43) is hinged to the adjusting beam (41).

5. The ladder with two ends and self-adaptive height for a lifting platform according to claim 2, characterized in that: The bottom end of the step frame (1) is rotatably connected to a first roller (13), the bottom end of the adjustment beam (41) is rotatably connected to a second roller (411), and the distance between the first roller (13) and the second roller (411) is equal to the length of the second adjustment portion (43).

6. The ladder with two ends and self-adaptive height for a lifting platform according to claim 2, characterized in that: The first adjustment portion (42) and the second adjustment portion (43) are provided with armrests (5), and the top wall of the armrests (5) is arranged parallel to the first adjustment portion (42).

7. The ladder with two ends and self-adaptive height for a lifting platform according to claim 6, characterized in that: The handrail (5) includes a first supporting vertical beam (51) located on the first adjusting portion (42), a second supporting vertical beam (52) is arranged on the second adjusting portion (43), the first supporting vertical beam (51) and the second supporting vertical beam (52) are parallel, and a supporting cross beam (54) is arranged at the top end of the first supporting vertical beam (51) and the second supporting vertical beam (52), and two ends of the supporting cross beam (54) are respectively hinged to the first supporting vertical beam (51) and the second supporting vertical beam (52).

8. The ladder with two ends and self-adaptive height for a lifting platform according to claim 7, characterized in that: An auxiliary support vertical beam (53) is arranged between the first support vertical beam (51) and the second support vertical beam (52), the bottom end of the auxiliary support vertical beam (53) is fixed to the step (3), and the top end of the auxiliary support vertical beam (53) is hinged to the support cross beam (54).

9. The ladder with two ends and self-adaptive height for a lifting platform according to claim 8, characterized in that: An auxiliary support crossbeam (55) is horizontally arranged between the first support vertical beam (51) and the second support vertical beam (52), one end of the auxiliary support crossbeam (55) is hinged to the first support vertical beam (51), the other end of the auxiliary support crossbeam (55) is hinged to the second support vertical beam (52), and the side wall of the auxiliary support crossbeam (55) is hinged to the auxiliary support vertical beam (53).

10. The ladder with self-adaptive height at both ends for a lifting platform according to claim 2, characterized in that: The upper surface of the step (3) is provided with anti-slip protrusions.

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