Adjustable boarding ladder device

Abstract

The invention relates to the technical field of boarding ladder devices, and discloses an adjustable boarding ladder device which comprises an adjusting mechanism and a boarding ladder, a convex plate is fixedly connected to the end of the boarding ladder, a stress elastic rod is fixedly connected to the bottom of a sliding frame, and an electric push rod is fixedly connected to the surface of the sliding frame. According to the boarding ladder, by arranging the adjusting mechanism, when a ship stops at a wharf, a hydraulic telescopic rod is started, the hydraulic telescopic rod can stretch out and draw back at the moment, when the hydraulic telescopic rod extends, the boarding ladder can be pushed to rotate at the end of the supporting plate integrally and move towards the direction of the ship integrally, and therefore the angle between the boarding ladder and the ship is adjusted; at the moment, the electric telescopic rod is started to push the boarding ladder to integrally extend upwards, the boarding ladder can drive the boarding platform to move upwards when extending, the boarding platform is kept static when moving to the position over the ship deck, the height of the boarding ladder is further adjusted according to the height of the ship, and the height of the boarding ladder is matched with the height of the ship to be appropriate.

Description

Technical Field

[0001] The invention relates to the technical field of boarding ladder equipment, in particular to an adjustable boarding ladder device. Background Art

[0002] The boarding ladder is an important equipment in modern large oil tanker terminals, used to ensure the safe and smooth boarding and disembarking of loading and unloading personnel and crew members.

[0003] In the prior art, when a ship docks at a pier, a boarding ladder is needed to allow passengers and staff to board or disembark. However, the height of a boarding ladder can only be matched according to a hull height. Due to the different hull heights, the boarding ladder has certain limitations. Summary of the invention

[0004] The object of the present invention is to provide an adjustable boarding ladder device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is an adjustable boarding ladder device, comprising a support plate, two sides of the support plate are fixedly connected with a U-shaped frame, the inner wall of the U-shaped frame is rotatably connected with a hydraulic telescopic rod, and further comprising; An adjustment mechanism, the adjustment mechanism comprising a sliding frame, an end of the sliding frame being fixedly connected to a boarding platform; A stabilizing mechanism, the stabilizing mechanism comprising a lower push rod, the end of the lower push rod is rotatably connected to a stabilizing plate, and the surface of the stabilizing plate is fixedly connected to a supporting telescopic rod; The stabilizing mechanism comprises a pulling plate and a driven frame, the pulling plate end portion is rotatably connected to a stabilizing telescopic frame, the driven frame end portion is fixedly connected to a stabilizing plate, the lower surface of the stabilizing plate is fixedly connected to an elastic plate, the surface of the elastic plate is fixedly connected to a passive plate, the passive plate one end away from the elastic plate is fixedly connected to a cross plate, the bottom of the cross plate is fixedly connected to a contact elastic rod, the contact elastic rod one end away from the cross plate is rotatably connected to an expansion rod, the driven frame one end away from the stabilizing plate is fixedly connected to the surface of the moving frame, the pulling plate one end away from the stabilizing telescopic frame is rotatably connected to the bottom wall of the cross plate, the expansion rod one end away from the contact elastic rod is rotatably connected to the bottom of the pulling plate, the number of the stabilizing plates is set to four, and are divided into two groups of two in each group, and the four stabilizing plates are symmetrically arranged at the end of the driven frame.

[0006] Furthermore, the number of the hydraulic telescopic rods is two, and the two hydraulic telescopic rods are symmetrically arranged on the surface of the U-shaped frame, and the top of the U-shaped frame is located above the support plate.

[0007] Furthermore, the adjustment mechanism includes a boarding ladder, the end of which is fixedly connected to a convex plate, the bottom of the sliding frame is fixedly connected to a force-bearing elastic rod, the surface of the sliding frame is fixedly connected to an electric push rod, and the surface of the boarding ladder is fixedly connected to an electric telescopic rod.

[0008] Furthermore, the inner wall of the sliding frame is slidably connected to the surface of the convex plate, the end of the hydraulic telescopic rod away from the U-shaped frame is rotatably connected to the surface of the boarding ladder, the end of the boarding platform is in contact with the end of the boarding ladder, the top of the boarding ladder is fixedly connected to the bottom of the electric push rod, and the end of the boarding ladder away from the boarding platform is rotatably connected to the end of the support plate.

[0009] Furthermore, the stabilizing mechanism includes a bent plate, a groove is provided on the surface of the bent plate, a buffer telescopic rod is fixedly connected to the inner wall of the groove, an end of the buffer telescopic rod away from the inner wall of the groove is fixedly connected to a contact frame, a driven push plate is rotatably connected to the surface of the contact frame, the bottom of the boarding platform is fixedly connected to a groove plate, the inner wall of the groove plate is slidably connected to a movable frame, and the end of the movable frame is fixedly connected to a limited telescopic rod.

[0010] Furthermore, one end of the lower push rod away from the stabilizing plate is rotatably connected to both sides of the movable frame, one end of the bent plate close to the boarding platform is fixedly connected to the surface of the boarding platform, one end of the supporting telescopic rod away from the stabilizing plate is fixedly connected to the bottom of the boarding platform, and one end of the driven push plate away from the contact frame is rotatably connected to the bottom of the movable frame.

[0011] The present invention has the following beneficial effects: The present invention provides an adjusting mechanism, when the ship is docked at the dock, the hydraulic telescopic rod is started, and the hydraulic telescopic rod will be extended and retracted. When the hydraulic telescopic rod is extended, it will push the boarding ladder as a whole to rotate at the end of the support plate and move toward the direction of the ship as a whole, thereby adjusting the angle between the boarding ladder as a whole and the ship. At this time, the electric telescopic rod is started to push the boarding ladder as a whole to extend upward, and when the boarding ladder is extended, it will drive the boarding platform to move upward, and when the boarding platform moves to just above the deck of the ship, it will remain stationary, and the height of the boarding ladder is further adjusted according to the height of the ship, so that the height of the boarding ladder and the height of the ship are matched to a suitable height. At this time, the staff walks to the inside of the boarding platform, and then starts the electric push rod to push the sliding frame to slide downward on the surface of the convex plate. When the sliding frame slides, it will drive the boarding platform to slide downward, and when the sliding frame slides, it will squeeze the stressed elastic rod. When the stressed elastic rod is squeezed to a certain position, the sliding frame will be limited, and then the position of the boarding ladder and the ship can be adjusted according to the height of the ship and the angle docked at the dock.

[0012] When the stabilizing plate moves downward, it drives the supporting telescopic rod to extend downward, thereby effectively improving the stability of the boarding platform and the deck.

[0013] The present invention provides a stabilizing mechanism, when the moving frame slides, it will drive the driven frame to move in the direction of approaching each other, when the driven frame moves, it will drive the stabilizing plate to move in the direction of approaching each other and contact with the surface of the boarding platform, thereby reinforcing the boarding platform, and when the stabilizing plate moves, it will squeeze the elastic plate, when the elastic plate is squeezed, the middle part will bend and push the passive plate to move downward, when the passive plate moves, it will drive the cross plate to move downward, when the cross plate moves, it will push the contact elastic rod to move downward, when the contact elastic rod contacts the clamping plate, the pressure through the cross plate will shrink downward, when the cross plate moves downward, it will push the pulling plate to move downward, when the pulling plate moves, it will push the stabilizing telescopic frame to move downward, at this time, the pulling plate will be subjected to the pressure of the cross plate and move in the direction of moving away from each other, when the pulling plate moves, it will push the stabilizing telescopic frame to extend in the direction of approaching each other, at this time, the contact area between the stabilizing telescopic frame and the deck surface becomes larger, thereby improving the stability of the boarding platform.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3It is a schematic diagram of the overall structure of the regulating mechanism of the present invention; Figure 4 It is a schematic diagram of the overall structure of the stabilizing mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the stabilizing plate of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part A; Figure 7 This is a schematic diagram of the structure of the stabilizing plate of the present invention; Figure 8 It is a schematic diagram of the overall structure of the stabilizing mechanism of the present invention; Fig. 9 It is a schematic diagram of the elastic plate structure of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. support plate; 2. U-shaped frame; 3. hydraulic telescopic rod; 10. adjustment mechanism; 11. boarding ladder; 12. convex plate; 13. sliding frame; 14. boarding platform; 15. force-bearing elastic rod; 16. electric push rod; 17. electric telescopic rod; 30. stabilizing mechanism; 31. bending plate; 32. buffer telescopic rod; 33. contact frame; 34. driven push plate; 35. groove plate; 36. moving frame; 37. limit telescopic rod; 38. lower push rod; 39. stabilizing plate; 40. supporting telescopic rod; 50. stabilizing mechanism; 51. driven frame; 52. stabilizing plate; 53. elastic plate; 54. passive plate; 55. cross plate; 56. contact elastic rod; 57. expansion rod; 58. pull plate; 59. stabilizing telescopic frame. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 9 As shown, the present invention is an adjustable boarding ladder device, comprising a support plate 1, with U-shaped frames 2 fixedly connected to both sides of the support plate 1, and a hydraulic telescopic rod 3 rotatably connected to the inner wall of the U-shaped frame 2; and further comprising; The adjusting mechanism 10 includes a sliding frame 13, and then the electric push rod 16 is started to push the sliding frame 13 to slide downward on the surface of the convex plate 12. The end of the sliding frame 13 is fixedly connected to the boarding platform 14. When the boarding ladder 11 is extended, it will drive the boarding platform 14 to move upward. When the boarding platform 14 moves to the top of the ship deck, it remains stationary. The height of the boarding ladder 11 is further adjusted according to the height of the ship, so that the height of the boarding ladder 11 matches the height of the ship to a suitable height. At this time, the staff walks to the inside of the boarding platform 14; The stabilizing mechanism 30 includes a lower push rod 38 to prevent the two moving frames 36 from contacting each other. When the moving frames 36 slide, the lower push rod 38 is driven to move toward each other. The end of the lower push rod 38 is rotatably connected to a stabilizing plate 39. When the lower push rod 38 moves, the stabilizing plate 39 is pushed downward and contacts the deck of the ship. The surface of the stabilizing plate 39 is fixedly connected to a supporting telescopic rod 40. The stabilizing mechanism 50 includes a pulling plate 58. At this time, the pulling plate 58 will be pressed by the cross plate 55 and will move in the direction away from each other. When the cross plate 55 moves downward, it will push the pulling plate 58 to move downward. The end of the pulling plate 58 is rotatably connected to a stabilizing telescopic frame 59. When the pulling plate 58 moves, it will push the stabilizing telescopic frame 59 to move downward and contact the deck. When the pulling plate 58 moves, it will push the stabilizing telescopic frame 59 to extend in the direction of approaching each other. At this time, the surface contact area of ​​the stabilizing telescopic frame 59 and the deck becomes larger, thereby improving the stability of the boarding platform 14.

[0020] There are two hydraulic telescopic rods 3 , which are symmetrically arranged on the surface of the U-shaped frame 2 .

[0021] When the ship is docked at the pier, the hydraulic telescopic rod 3 is started, and the hydraulic telescopic rod 3 will be extended and retracted. When the hydraulic telescopic rod 3 is extended, the boarding ladder 11 will be pushed to rotate at the end of the support plate 1 and move toward the ship as a whole, thereby adjusting the angle between the boarding ladder 11 and the ship as a whole. A convex plate 12 is fixedly connected to the end of the boarding ladder 11, and a force-bearing elastic rod 15 is fixedly connected to the bottom of the sliding frame 13. When the sliding frame 13 slides, the force-bearing elastic rod 15 is squeezed. An electric push rod 16 is fixedly connected to the surface of the sliding frame 13, and an electric telescopic rod 17 is fixedly connected to the surface of the boarding ladder 11. At this time, the electric telescopic rod 17 is started to push the boarding ladder 11 to extend upward as a whole. When the force-bearing elastic rod 15 is squeezed to a certain position, the sliding frame 13 will be limited, and then the position of the boarding ladder and the ship can be adjusted according to the height of the ship and the angle of docking at the pier.

[0022] The inner wall of the sliding frame 13 is slidably connected to the surface of the convex plate 12, the end of the hydraulic telescopic rod 3 away from the U-shaped frame 2 is rotatably connected to the surface of the boarding ladder 11, the end of the boarding platform 14 is in contact with the end of the boarding ladder 11, and when the sliding frame 13 slides, it will drive the boarding platform 14 to slide downward, and the top of the boarding ladder 11 is fixedly connected to the bottom of the electric push rod 16.

[0023] The stabilizing mechanism 30 includes a curved plate 31. When the boarding platform 14 moves downward, the curved plate 31 is driven to move downward. A groove is provided on the surface of the curved plate 31. A buffer telescopic rod 32 is fixedly connected to the inner wall of the groove. A contact frame 33 is fixedly connected to the end of the buffer telescopic rod 32 away from the inner wall of the groove. When the contact frame 33 contacts the deck of the ship, it slides upward on the inner wall of the groove. When the curved plate 31 moves downward, the contact frame 33 is driven to move downward. Two contact frames 33 are provided to maintain the balance of the boarding platform 14. The surface of 33 is rotatably connected with a driven push plate 34, the bottom of the boarding platform 14 is fixedly connected with a groove plate 35, the inner wall of the groove plate 35 is slidably connected with a moving frame 36, and the end of the moving frame 36 is fixedly connected with a limited telescopic rod 37. When the moving frame 36 moves, it will push the limited telescopic rod 37 to shrink in the direction of approaching each other, further improving the stability of the boarding platform 14 and the deck. When the stabilizing plate 39 moves downward, it will drive the supporting telescopic rod 40 to extend downward, effectively improving the stability of the boarding platform 14 and the deck.

[0024] The end of the lower push rod 38 away from the stabilizing plate 39 is rotatably connected to the two sides of the movable frame 36. When the limiting telescopic rod 37 is retracted to a certain position, the movable frame 36 will be limited. The end of the bent plate 31 close to the boarding platform 14 is fixedly connected to the surface of the boarding platform 14, and the end of the supporting telescopic rod 40 away from the stabilizing plate 39 is fixedly connected to the bottom of the boarding platform 14. The end of the driven push plate 34 away from the contact frame 33 is rotatably connected to the bottom of the movable frame 36. When the boarding platform 14 is squeezed, the movable frame 36 will be pushed to slide on the inner wall of the groove plate 35 in the direction of approaching each other. When the boarding platform 14 moves downward, the driven push plate 34 will be squeezed.

[0025] The stabilizing mechanism 50 includes a driven frame 51. When the moving frame 36 slides, the driven frame 51 will be driven to move in a direction approaching each other. A stabilizing plate 52 is fixedly connected to the end of the driven frame 51. An elastic plate 53 is fixedly connected to the lower surface of the stabilizing plate 52. When the stabilizing plate 52 moves, the elastic plate 53 is squeezed. A passive plate 54 is fixedly connected to the surface of the elastic plate 53. When the elastic plate 53 is squeezed, the middle part will bend and push the passive plate 54 to move downward. The end of the passive plate 54 away from the elastic plate 53 is fixedly connected to a cross plate 55. When the passive plate 54 moves, the cross plate 55 is driven to move downward. A contact elastic rod 56 is fixedly connected to the bottom of the cross plate 55. When the cross plate 55 moves, it pushes the contact elastic rod 56 to move downward. When the contact elastic rod 56 contacts the clamping plate, the pressure of the cross plate 55 will shrink downward. The end of the contact elastic rod 56 away from the cross plate 55 is rotatably connected to an expansion rod 57.

[0026] One end of the driven frame 51 away from the stabilizing plate 52 is fixedly connected to the surface of the movable frame 36. When the driven frame 51 moves, it will drive the stabilizing plate 52 to move in a direction close to each other and contact the surface of the boarding platform 14, thereby reinforcing the boarding platform 14. One end of the pulling plate 58 away from the stabilizing telescopic frame 59 is rotatably connected to the bottom wall of the cross plate 55, and one end of the expansion rod 57 away from the contact elastic rod 56 is rotatably connected to the bottom of the pulling plate 58. There are four stabilizing plates 52, which are divided into two groups of two each. The four stabilizing plates 52 are symmetrically arranged at the end of the driven frame 51.

[0027] When in use, when the ship is docked at the pier, the hydraulic telescopic rod 3 is started, and the hydraulic telescopic rod 3 will be extended and retracted. When the hydraulic telescopic rod 3 is extended, it will push the boarding ladder 11 to rotate as a whole at the end of the support plate 1 and move as a whole toward the direction of the ship, thereby adjusting the angle between the boarding ladder 11 and the ship as a whole. At this time, the electric telescopic rod 17 is started to push the boarding ladder 11 to extend upward as a whole. When the boarding ladder 11 is extended, it will drive the boarding platform 14 to move upward. When the boarding platform 14 moves to just above the deck of the ship, it remains stationary. The height of the boarding ladder 11 is further adjusted according to the height of the ship, so that the height of the boarding ladder 11 matches the height of the ship to a suitable height. At this time, the staff walks to the inside of the boarding platform 14, and then starts the electric push rod 16 to push the sliding frame 13 on the convex plate 1 2 slides downward, and when the sliding frame 13 slides, it will drive the boarding platform 14 to slide downward, and when the sliding frame 13 slides, it will squeeze the stressed elastic rod 15, and when the stressed elastic rod 15 is squeezed to a certain position, it will limit the sliding frame 13, and then the position of the boarding ladder and the ship can be adjusted according to the height of the ship and the angle of the dock. When the boarding platform 14 moves downward, it will drive the curved plate 31 to move downward, and when the curved plate 31 moves downward, it will drive the contact frame 33 to move downward. Two contact frames 33 are provided to keep the balance of the boarding platform 14. When the contact frame 33 contacts the deck of the ship, it will slide upward on the inner wall of the groove, and when the boarding platform 14 moves downward, it will squeeze the boarding platform 14. When the boarding platform 14 is squeezed When the moving frame 36 is moved, it will push the moving frame 36 to slide on the inner wall of the groove plate 35 in the direction of approaching each other. When the moving frame 36 moves, it will push the limiting telescopic rod 37 to shrink in the direction of approaching each other. When the limiting telescopic rod 37 shrinks to a certain position, it will limit the moving frame 36 to prevent the two moving frames 36 from contacting each other. When the moving frame 36 slides, it will drive the lower push rod 38 to move in the direction of approaching each other. When the lower push rod 38 moves, it will push the stabilizing plate 39 to move downward and contact the deck of the ship, further improving the stability of the boarding platform 14 and the deck. When the stabilizing plate 39 moves downward, it will drive the supporting telescopic rod 40 to extend downward. When the moving frame 36 slides, it will drive the driven frame 51 to move in the direction of approaching each other. When the driven frame 51 moves, it will drive the stabilizing plate 39 to move downward. The plates 52 move in a direction approaching each other and contact with the surface of the boarding platform 14, thereby reinforcing the boarding platform 14. When the stabilizing plate 52 moves, it will squeeze the elastic plate 53. When the elastic plate 53 is squeezed, the middle part will bend and push the passive plate 54 to move downward. When the passive plate 54 moves, it will drive the cross plate 55 to move downward. When the cross plate 55 moves, it will push the contact elastic rod 56 to move downward. When the contact elastic rod 56 contacts the splint, the pressure through the cross plate 55 will shrink downward. When the cross plate 55 moves downward, it will push the pulling plate 58 to move downward. When the pulling plate 58 moves, it will push the stabilizing telescopic frame 59 to move downward and contact with the deck. At this time, the pulling plate 58 will be subjected to the pressure of the cross plate 55 and move in a direction away from each other.When the pull plate 58 moves, it pushes the stable telescopic frame 59 to extend in a direction close to each other. At this time, the surface contact area between the stable telescopic frame 59 and the deck becomes larger, thereby improving the stability of the boarding platform 14.

[0028] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable boarding ladder device, comprising a support plate (1), two sides of the support plate (1) are fixedly connected to U-shaped frames (2), the inner wall of the U-shaped frame (2) is rotatably connected to a hydraulic telescopic rod (3), characterized in that: Also includes; An adjustment mechanism (10), the adjustment mechanism (10) comprising a sliding frame (13), an end of the sliding frame (13) being fixedly connected to a boarding platform (14); A stabilizing mechanism (30), the stabilizing mechanism (30) comprising a lower push rod (38), the end of the lower push rod (38) being rotatably connected to a stabilizing plate (39), and the surface of the stabilizing plate (39) being fixedly connected to a supporting telescopic rod (40); The stabilizing mechanism (50) comprises a pulling plate (58) and a driven frame (51), the pulling plate (58) having an end rotatably connected to a stabilizing telescopic frame (59), the driven frame (51) having an end fixedly connected to a stabilizing plate (52), the lower surface of the stabilizing plate (52) being fixedly connected to an elastic plate (53), the surface of the elastic plate (53) being fixedly connected to a passive plate (54), the passive plate (54) having an end away from the elastic plate (53) being fixedly connected to a transverse plate (55), the bottom of the transverse plate (55) being fixedly connected to a contact elastic rod (56), the contact One end of the elastic contact rod (56) away from the transverse plate (55) is rotatably connected to an expansion rod (57); one end of the driven frame (51) away from the stabilizing plate (52) is fixedly connected to the surface of the movable frame (36); one end of the pulling plate (58) away from the stabilizing telescopic frame (59) is rotatably connected to the bottom wall of the transverse plate (55); one end of the expansion rod (57) away from the elastic contact rod (56) is rotatably connected to the bottom of the pulling plate (58); the number of the stabilizing plates (52) is set to four, and they are divided into two groups of two each; the four stabilizing plates (52) are symmetrically arranged at the end of the driven frame (51).

2. The adjustable boarding ladder device according to claim 1, characterized in that: The number of the hydraulic telescopic rods (3) is two, and the two hydraulic telescopic rods (3) are symmetrically arranged on the surface of the U-shaped frame (2), and the top of the U-shaped frame (2) is located above the support plate (1).

3. The adjustable boarding ladder device according to claim 2, characterized in that: The adjustment mechanism (10) comprises a boarding ladder (11), the end of the boarding ladder (11) is fixedly connected to a convex plate (12), the bottom of the sliding frame (13) is fixedly connected to a force-bearing elastic rod (15), the surface of the sliding frame (13) is fixedly connected to an electric push rod (16), and the surface of the boarding ladder (11) is fixedly connected to an electric telescopic rod (17).

4. The adjustable boarding ladder device according to claim 3, characterized in that: The inner wall of the sliding frame (13) is slidably connected to the surface of the convex plate (12); the end of the hydraulic telescopic rod (3) away from the U-shaped frame (2) is rotatably connected to the surface of the boarding ladder (11); the end of the boarding platform (14) contacts the end of the boarding ladder (11); the top of the boarding ladder (11) is fixedly connected to the bottom of the electric push rod (16); and the end of the boarding ladder (11) away from the boarding platform (14) is rotatably connected to the end of the support plate (1).

5. The adjustable boarding ladder device according to claim 4, characterized in that: The stabilizing mechanism (30) comprises a bent plate (31), a groove is formed on the surface of the bent plate (31), a buffer telescopic rod (32) is fixedly connected to the inner wall of the groove, an end of the buffer telescopic rod (32) away from the inner wall of the groove is fixedly connected to a contact frame (33), a surface of the contact frame (33) is rotatably connected to a driven push plate (34), a groove plate (35) is fixedly connected to the bottom of the boarding platform (14), a moving frame (36) is slidably connected to the inner wall of the groove plate (35), and an end of the moving frame (36) is fixedly connected to a limited telescopic rod (37).

6. The adjustable boarding ladder device according to claim 5, characterized in that: One end of the lower push rod (38) away from the stabilizing plate (39) is rotatably connected to both sides of the movable frame (36); one end of the bent plate (31) close to the boarding platform (14) is fixedly connected to the surface of the boarding platform (14); one end of the supporting telescopic rod (40) away from the stabilizing plate (39) is fixedly connected to the bottom of the boarding platform (14); and one end of the driven push plate (34) away from the contact frame (33) is rotatably connected to the bottom of the movable frame (36).

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