Movable hanging ladder with folding handrail

Abstract

The utility model discloses a movable hanging ladder with a folding handrail, which relates to the technical field of hanging ladders, and comprises a base, a ladder frame is rotatably connected in the base, a telescopic mechanism is rotatably connected on the top surface of the ladder frame, a folding mechanism is fixedly connected on the side surface of the ladder frame, the folding mechanism comprises a U-shaped groove, and the U-shaped groove is fixedly connected with the folding handrail. A supporting rod is rotationally connected into the U-shaped groove, a handrail is rotationally connected to the top face of the supporting rod, and a limiting rod is rotationally connected to the side face of the handrail. The folding mechanism, the U-shaped groove, the supporting rod, the handrail, the limiting rod, the limiting hole and the rotating pin are matched, the supporting rod is driven to rotate on the surface of the rotating pin in the handrail by pulling the handrail, meanwhile, the supporting rod rotates on the surface of the rotating pin in the U-shaped groove, when the supporting rod is completely erected, the limiting rod is clamped into the limiting hole, and fixing of the handrail and the supporting rod is completed; and the use adaptability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hanging ladders, and particularly relates to a movable hanging ladder with a folding handrail. Background Art

[0002] Special operation vehicles are designed and installed with special operation devices. To facilitate personnel to get on and off the vehicle, one or more movable hanging ladders are generally installed on the vehicle. Limited by the national standard GB 1589-2016 "Requirements for the Outer Dimensions, Axle Loads and Mass Limits of Motor Vehicles, Trailers and Semi-trailer Trains" and the space of the vehicle itself, the movable ladder is usually stored inside the carriage at ordinary times and hung on the fixed hanging points outside the carriage when in use. If there is no guardrail on the side of the ladder, there is no handrail for personnel to hold when getting on and off the carriage, and it is easy to fall, posing a safety hazard. If the ladder is provided with a handrail, it is not convenient for the movable hanging ladder to be carried and stored.

[0003] Patent publication number CN209670892U discloses a movable hanging ladder with a folding handrail, which includes a first-stage ladder panel, a ladder board, a ladder side board. The first-stage ladder panel is welded to the top of the ladder side board, and the ladder board is welded to the ladder side board. Folding handrails are arranged at both ends of the ladder side board, and safety ropes are connected to the tops of the folding handrails at both ends to form a guardrail structure.

[0004] In order to solve the problems of the existing movable hanging ladder having a risk of falling and being not easy to store, the prior art is to adopt the method of arranging folding handrails at both ends of the ladder side board of the hanging ladder, and connecting safety ropes to the tops of the folding handrails at both ends to form a guardrail structure. However, there will still be a situation where the folding handrails are not firmly fixed or the ropes are easy to shake during use, which may lead to the problem of falling during the process of getting on and off the ladder. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a movable hanging ladder with a folding handrail to solve the problems put forward in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A movable hanging ladder with a folding handrail includes a base. A ladder frame is rotatably connected inside the base. A telescopic mechanism is rotatably connected to the top surface of the ladder frame. A folding mechanism is fixedly connected to the side of the ladder frame.

[0008] The folding mechanism includes a U-shaped groove. A support rod is rotatably connected inside the U-shaped groove. The number of the U-shaped groove and the support rod is two. A handrail is rotatably connected to the top surface of the support rod. A limiting rod is rotatably connected to the side of the handrail. A limiting hole is formed in the side of the support rod. One end of the limiting rod is clamped with the limiting hole.

[0009] A further improvement of the technical solution of the present utility model lies in that: there is a rotating pin inside the U-shaped groove, the U-shaped groove is rotatably connected to the support rod through the rotating pin, and the support rod is rotatably connected to the armrest through the rotating pin.

[0010] A further improvement of the technical solution of the present utility model lies in that: the base includes a bottom plate, a vertical plate is fixedly connected to the top surface of the bottom plate, the number of vertical plates on the same bottom plate is two, a fixing pin is rotatably connected to the side surface of the vertical plate, and one end of the fixing pin is movably connected to a limiting post.

[0011] A further improvement of the technical solution of the present utility model lies in that: a through hole is opened at one end of the fixing pin, and the through hole is slidably connected to the limiting post.

[0012] A further improvement of the technical solution of the present utility model lies in that: the ladder frame includes a frame rod, the U-shaped groove is fixedly connected to the side surface of the frame rod, the bottom surface of the frame rod is rotatably connected to the vertical plate, a ladder rod is fixedly connected to the other side surface of the frame rod, a sliding groove one is opened on the side surface of the top end of the frame rod, a clamping block is slidably connected inside the sliding groove one, a spring is fixedly connected to the bottom surface of the sliding groove one, and one end of the spring is fixedly connected to the clamping block.

[0013] A further improvement of the technical solution of the present utility model lies in that: the telescopic mechanism includes a turntable, a clamping groove is opened on the side surface of the turntable, a rotating shaft is rotatably connected inside the turntable, a telescopic bottom plate is fixedly connected to the top surface of the turntable, a sliding groove two is opened inside the telescopic bottom plate, a telescopic plate is slidably connected inside the telescopic bottom plate, a slider is fixedly connected to the bottom surface of the telescopic plate, and a clamping plate is fixedly connected to the side surface of the telescopic plate.

[0014] A further improvement of the technical solution of the present utility model lies in that: the turntable is rotatably connected to the frame rod through the rotating shaft, a non-slip rubber layer is fixedly connected to the top surface of the clamping plate, and the clamping groove is clamped with the clamping block.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0016] 1. The present utility model provides a movable hanging ladder with a folding armrest, which adopts the cooperation of a folding mechanism, a U-shaped groove, a support rod, an armrest, a limiting rod, a limiting hole and a rotating pin. By pulling the armrest, the support rod is driven to rotate on the surface of the rotating pin inside the armrest, and at the same time, the support rod rotates on the surface of the rotating pin inside the U-shaped groove. When the support rod is completely erected, the limiting rod is clamped into the limiting hole to complete the fixation of the armrest and the support rod, improving the adaptability of the device in use.

[0017] 2. The present utility model provides a movable hanging ladder with folding armrests, which adopts the cooperation of a base, a bottom plate, a vertical plate, a fixing pin, a through hole, and a limiting post. By increasing the friction with the ground through the bottom plate, the hanging ladder is more stable during use. The bottom surface of the rack bar is inserted between the two vertical plates, and the connection between the rack bar and the vertical plate is completed with a fixing pin. Then, the limiting post is inserted into the through hole to limit the fixing pin in the left and right directions, preventing the positioning pin from falling off and improving the adaptability of the device during use.

[0018] 3. The present utility model provides a movable hanging ladder with folding armrests, which adopts the cooperation of a telescopic mechanism, a turntable, a clamping groove, a rotating shaft, a telescopic bottom plate, a telescopic plate, a slider, a second sliding groove, a clamping plate, and an anti-slip rubber layer. By pulling the clamping block inside the rack bar and rotating the turntable, the angle between the telescopic bottom plate and the rack bar is adjusted. After reaching the appropriate angle, the clamping block is clamped into the clamping groove to fix the angle of the telescopic bottom plate. According to the width of the hanging part on the vehicle roof, the telescopic plate is pulled. The telescopic plate slides through the slider in the second sliding groove inside the telescopic bottom plate. After adjusting the distance between the telescopic plate and the telescopic bottom plate, the clamping plate is clamped to the hanging part on the vehicle roof, or the clamping plate can directly abut against the vehicle body. The anti-slip rubber layer on the top surface of the clamping plate provides friction to ensure the stability of the movable hanging ladder and improve the adaptability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the folding mechanism of the present utility model;

[0021] Figure 3 is a structural schematic diagram of the base of the present utility model;

[0022] Figure 4 is a structural schematic diagram of the telescopic mechanism of the present utility model;

[0023] Figure 5 is a structural schematic diagram of the ladder rack of the present utility model.

[0024] In the figure: 1. Base; 2. Ladder rack; 3. Telescopic mechanism; 4. Folding mechanism; 11. Bottom plate; 12. Vertical plate; 13. Fixing pin; 14. Through hole; 15. Limiting post; 21. Rack bar; 22. Ladder bar; 23. First sliding groove; 24. Clamping block; 25. Spring; 31. Turntable; 32. Telescopic bottom plate; 33. Telescopic plate; 34. Clamping plate; 35. Slider; 36. Second sliding groove; 37. Clamping groove; 38. Rotating shaft; 41. U-shaped groove; 42. Support rod; 43. Armrest; 44. Limiting rod; 45. Limiting hole; 46. Rotating pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the present utility model in detail with reference to the embodiments:

[0026] Embodiment 1

[0027] As Figures 1-5 shown, the utility model provides a movable hanging ladder with a folding armrest, which includes a base 1. A ladder frame 2 is rotatably connected inside the base 1. A telescopic mechanism 3 is rotatably connected to the top surface of the ladder frame 2. A folding mechanism 4 is fixedly connected to the side surface of the ladder frame 2. The folding mechanism 4 includes a U-shaped groove 41. A support rod 42 is rotatably connected inside the U-shaped groove 41. The number of the U-shaped groove 41 and the support rod 42 is two. An armrest 43 is rotatably connected to the top surface of the support rod 42. A limiting rod 44 is rotatably connected to the side surface of the armrest 43. A limiting hole 45 is formed on the side surface of the support rod 42. One end of the limiting rod 44 is clamped with the limiting hole 45. There is a rotating pin 46 inside the U-shaped groove 41 and the armrest 43. The U-shaped groove 41 and the support rod 42 are rotatably connected through the rotating pin 46. The support rod 42 and the armrest 43 are rotatably connected through the rotating pin 46.

[0028] In this embodiment, by pulling the armrest 43, the support rod 42 is driven to rotate on the surface of the rotating pin 46 inside the armrest 43. At the same time, the support rod 42 rotates on the surface of the rotating pin 46 inside the U-shaped groove 41. When the support rod 42 is fully erected, the limiting rod 44 is clamped into the limiting hole 45 to complete the fixation of the positions of the armrest 43 and the support rod 42.

[0029] Embodiment 2

[0030] As Figures 1-5 shown, on the basis of Embodiment 1, the utility model provides a technical solution: Preferably, the base 1 includes a bottom plate 11. A vertical plate 12 is fixedly connected to the top surface of the bottom plate 11. The number of the vertical plates 12 located on the same bottom plate 11 is two. A fixing pin 13 is rotatably connected to the side surface of the vertical plate 12. One end of the fixing pin 13 is slidably connected with a limiting column 15. A through hole 14 is formed at one end of the fixing pin 13. The through hole 14 is slidably connected with the limiting column 15.

[0031] In this embodiment, the friction with the ground is increased through the bottom plate 11, so that the movable hanging ladder is more stable during use. The bottom surface of the rack bar 21 is inserted between the vertical plates 12, and the connection between the rack bar 21 and the vertical plate 12 is completed with the fixing pin 13. Then, the limiting column 15 is inserted into the through hole 14 to limit the fixing pin 13 in the left and right directions to prevent the fixing pin 13 from falling off.

[0032] Embodiment 3

[0033] As Figures 1-5As shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the telescopic mechanism 3 includes a turntable 31. A clamping groove 37 is formed on the side surface of the turntable 31. A rotating shaft 38 is rotatably connected inside the turntable 31. A telescopic bottom plate 32 is fixedly connected to the top surface of the turntable 31. A second sliding groove 36 is formed inside the telescopic bottom plate 32. A telescopic plate 33 is slidably connected inside the telescopic bottom plate 32. A slider 35 is fixedly connected to the bottom surface of the telescopic plate 33. A clamping plate 34 is fixedly connected to the side surface of the telescopic plate 33. The turntable 31 is rotatably connected to the support rod 21 through the rotating shaft 38. Anti-slip rubber layers are fixedly connected to the top surfaces of the telescopic bottom plate 32 and the clamping plate 34. The clamping groove 37 is clamped with the clamping block 24.

[0034] In this embodiment, by pulling the clamping block 24 and rotating the turntable 31, the angle between the telescopic bottom plate 32 and the support rod 21 is adjusted. After reaching the appropriate angle, the clamping block 24 is inserted into the clamping groove 37 to fix the angle of the telescopic bottom plate 32. Then, according to the width of the hanging position on the vehicle roof, the telescopic plate 33 is pulled. The slider 35 on the bottom surface of the telescopic plate 33 slides in the second sliding groove 36 inside the telescopic bottom plate 32. After adjusting the distance between the telescopic plate 33 and the telescopic bottom plate 32, the clamping plate 34 is clamped to the hanging position on the vehicle roof, or the clamping plate 34 can also be directly abutted against the vehicle body. The anti-slip rubber layer on the top surface of the clamping plate 34 provides friction to ensure the stability of the movable hanging ladder.

[0035] Next, the working principle of the movable hanging ladder with a folding handrail will be specifically described.

[0036] As Figures 1-5 shown, the support rod 21 is connected to the vertical plate 12 through the fixing pin 13. When pulling the handrail 43 and the support rod 42 is fully erected, the limiting rod 44 is inserted into the limiting hole 45 to fix the positions of the handrail 43 and the support rod 42. The clamping block 24 is pulled and the turntable 31 is rotated to adjust the angle between the telescopic bottom plate 32 and the support rod 21. After reaching the appropriate angle, the clamping block 24 is released. The clamping block 24 is automatically inserted into the clamping groove 37 inside the turntable 31 through the spring 25. According to the width of the hanging position on the vehicle roof, the distance between the telescopic bottom plate 32 and the telescopic plate 33 is adjusted. After the distance adjustment is completed, the clamping plate 34 is clamped to the hanging position on the vehicle roof, or the clamping plate 34 can also be directly abutted against the vehicle body. The anti-slip rubber layer on the top surface of the clamping plate 34 provides friction to ensure the stability of the movable hanging ladder.

[0037] The above generally describes the present utility model in detail. However, on the basis of the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A movable hanging ladder with folding handrails, comprising a base (1), characterized in that: The interior of the base (1) is rotatably connected to a ladder frame (2), the top surface of the ladder frame (2) is rotatably connected to a telescopic mechanism (3), and the side surface of the ladder frame (2) is fixedly connected to a folding mechanism (4); The folding mechanism (4) comprises a U-shaped groove (41), the interior of the U-shaped groove (41) is rotatably connected to a support rod (42), the number of the U-shaped groove (41) and the support rod (42) is two, the top surface of the support rod (42) is rotatably connected to an armrest (43), the side surface of the armrest (43) is rotatably connected to a limiting rod (44), a limiting hole (45) is provided on the side surface of the support rod (42), and one end of the limiting rod (44) is clamped with the limiting hole (45).

2. The movable hanging ladder with folding handrails according to claim 1, characterized in that: A rotating pin (46) is provided inside the U-shaped groove (41) and the handrail (43); the U-shaped groove (41) and the support rod (42) are rotatably connected via the rotating pin (46); and the support rod (42) and the handrail (43) are rotatably connected via the rotating pin (46).

3. The movable hanging ladder with folding handrails according to claim 1, characterized in that: The base (1) comprises a bottom plate (11), the top surface of the bottom plate (11) is fixedly connected to a vertical plate (12), two vertical plates (12) are located on the same bottom plate (11), a side surface of the vertical plate (12) is rotatably connected to a fixing pin (13), and one end of the fixing pin (13) is slidably connected to a limiting column (15).

4. The movable hanging ladder with folding handrails according to claim 3, characterized in that: A through hole (14) is formed at one end of the fixing pin (13), and the through hole (14) is slidably connected to the limiting column (15).

5. The movable hanging ladder with folding handrails according to claim 3, characterized in that: The ladder frame (2) comprises a frame rod (21), the U-shaped groove (41) is fixedly connected to the side of the frame rod (21), the bottom surface of the frame rod (21) is rotatably connected to the vertical plate (12), the other side surface of the frame rod (21) is fixedly connected to a ladder rod (22), the top side surface of the frame rod (21) is provided with a sliding groove 1 (23), the interior of the sliding groove 1 (23) is slidably connected to a clamping block (24), the bottom surface of the sliding groove 1 (23) is fixedly connected to a spring (25), and one end of the spring (25) is fixedly connected to the clamping block (24).

6. The movable hanging ladder with folding handrails according to claim 5, characterized in that: The telescopic mechanism (3) comprises a rotating disk (31), a side surface of the rotating disk (31) is provided with a clamping groove (37), the interior of the rotating disk (31) is rotatably connected to a rotating shaft (38), the top surface of the rotating disk (31) is fixedly connected to a telescopic bottom plate (32), a sliding groove (36) is provided inside the telescopic bottom plate (32), the interior of the telescopic bottom plate (32) is slidably connected to a telescopic plate (33), the bottom surface of the telescopic plate (33) is fixedly connected to a sliding block (35), and the side surface of the telescopic plate (33) is fixedly connected to a clamping plate (34).

7. The movable hanging ladder with folding handrails according to claim 6, characterized in that: The rotating disk (31) is rotatably connected to the frame rod (21) via a rotating shaft (38); a non-slip rubber layer is fixedly connected to the top surface of the clamping plate (34); and the clamping groove (37) is clamped to the clamping block (24).

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