Fire-fighting emergency escape ladder for high-rise building

Abstract

The invention relates to the technical field of fire-fighting lifesaving ladders, in particular to a high-rise building fire-fighting lifesaving ladder which comprises a first folding ladder, a first handrail, a second handrail, a second folding ladder and an angle adjusting component, the lower end of the first handrail is fixedly connected with the first folding ladder, and the first handrail is slidably connected with the second handrail; the lower end of the second handrail is fixedly connected with a second folding ladder, the bottom of the second folding ladder and an angle adjusting component are arranged in a limiting and adjusting mode, the angle adjusting component comprises a driving adjusting component and a driven connecting component, and the right side end of the driving adjusting component is fixedly connected with the driven connecting component. The driven connecting part comprises a bearing ring frame, a front plate frame, a stable connecting plate, a first hinge frame, a second hinge frame and a stable connecting seat frame, the right side of the bearing ring frame is fixedly connected with the front plate frame, the right side of the front plate frame is fixedly connected with the stable connecting plate, and the first hinge frame is hinged to the upper end of the stable connecting plate. And through the arrangement of the angle adjusting component, the fire-fighting work of the high-rise building is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire rescue ladders, in particular to a fire rescue ladder for high-rise buildings. BACKGROUND

[0002] The aerial ladder fire truck is provided with a hydraulic lifting platform for firemen to climb and put out fires in high-rise buildings, large facilities, oil tanks and the like, rescue trapped personnel, rescue valuable materials and complete other rescue tasks. The truck is provided with a telescopic aerial ladder, which can have a lifting bucket turntable and a fire extinguishing device, for firemen to climb and put out fires and rescue trapped personnel, and is suitable for putting out fires in high-rise buildings.

[0003] According to Chinese Patent Publication No. CN114658345A, a safety fire ladder is disclosed, which relates to the technical field of fire ladders, comprising a fire ladder main support, a kicking support and a supporting rod. The fire ladder main support comprises a main fixed support, a first ladder stand and a second ladder stand. The first ladder stand is fixedly provided with a anti-jamming support guide mechanism at the side end. The second ladder stand is sleeved in the anti-jamming support guide mechanism slot. The support slot seat can limit the second ladder stand. When the second ladder stand moves upward in the support slot seat, it will not deviate, so that the outer end of the second ladder stand will not rub against the inner side of the first ladder stand. The anti-jamming pulley can make the second ladder stand move upward more smoothly and not jam. The anti-winding sleeve seat can limit the movement of the pulling rope and the transmission rope in the range of the limiting anti-winding assembly at the side end of each kicking support, effectively preventing the pulling rope and the transmission rope from winding.

[0004] At present, the fire rescue ladder often needs to be adjusted in angle during use, but in the angle adjustment process, most of them use hydraulic devices for control, and the angle of the rescue ladder is changed by stretching out and pulling in. During the control process of the hydraulic device, there is the phenomenon of unstable control, so an equipment needs to be improved for the above problems. SUMMARY

[0005] In view of the problems in the prior art, the present application provides a fire rescue ladder for high-rise buildings.

[0006] The technical scheme adopted by the present application to solve the technical problems is: a fire rescue ladder for high-rise buildings, comprising a first folding ladder, a first handrail, a second handrail, a second folding ladder and an angle adjusting part, the lower end of the first handrail is fixedly connected with the first folding ladder, the first handrail and the second handrail are slidingly connected, the lower end of the second handrail is fixedly connected with the second folding ladder, and the bottom of the second folding ladder is limitingly adjusted with the angle adjusting part.

[0007] The angle adjusting component comprises a driving adjusting component and a driven connecting component, and the right end of the driving adjusting component is fixedly connected with the driven connecting component;

[0008] The driven connecting component comprises a supporting ring frame, a front plate frame, a stable connecting plate, a first hinged frame, a second hinged frame and a stable connecting seat frame, the right side of the supporting ring frame is fixedly connected with the front plate frame, the right side of the front plate frame is fixedly connected with the stable connecting plate, the upper end of the stable connecting plate is hingedly connected with the first hinged frame, the upper end of the first hinged frame is hingedly connected with the second hinged frame, and the upper end of the second hinged frame is hingedly arranged with the stable connecting seat frame.

[0009] Specifically, the driving adjusting component comprises a rotating connecting shaft, a sleeved limiting shaft, a stable supporting plate frame and an inner connecting guide rod, the center of the rotating connecting shaft is rotationally connected with the sleeved limiting shaft, the lower end of the sleeved limiting shaft is fixedly connected with the stable supporting plate frame, and the lower end of the stable supporting plate frame is provided with the inner connecting guide rod.

[0010] Specifically, the driving adjusting component further comprises a telescopic connecting column, a telescopic cylinder, a limiting hinged column, a driving connecting shaft, a first cooperative turntable, a limiting sleeve disc, a positioning supporting frame, a second cooperative turntable, a rotating matching shaft and a mounting combined frame, the lower end of the telescopic connecting column is telescopically connected with the telescopic cylinder, the lower end of the telescopic cylinder is limitingly hingedly arranged with the limiting hinged column, the lower end of the limiting hinged column is fixedly connected with the left side of the first cooperative turntable, the center of the first cooperative turntable is fixedly connected with the driving connecting shaft, the right side of the driving connecting shaft is fixedly connected with the second cooperative turntable, and the right side of the second cooperative turntable is fixedly connected with the rotating matching shaft.

[0011] Specifically, the lower end of the first cooperative turntable is limitingly rotationally connected with the limiting sleeve disc, the right side of the limiting sleeve disc is fixedly connected with the positioning supporting frame, and the inner connecting guide rod is fixedly connected with the stable supporting plate frame through the mounting combined frame.

[0012] Specifically, the upper end of the telescopic connecting column is fixedly connected with the middle part of the second folding ladder, the left side of the second folding ladder is rotationally connected with the rotating connecting shaft and the sleeved limiting shaft, the upper end of the supporting ring frame is fixedly connected with the stable supporting plate frame, and the limiting sleeve disc and the positioning supporting frame are symmetrically arranged about the first cooperative turntable.

[0013] Specifically, the lower end of the telescopic cylinder is rotationally adjusted with the driving connecting shaft and the first cooperative turntable through the limiting hinged column, the upper end of the second hinged frame is fixedly connected with the right side position of the second folding ladder through the stable connecting seat frame, and the stable connecting seat frame is fixedly connected with the second folding ladder.

[0014] Specifically, the lower end of the supporting ring frame is fixedly connected with a positioning stable plate, and the right side of the positioning stable plate is fixedly connected with a mounting grid plate.

[0015] A method for using a fire escape ladder in a high-rise building includes the following steps:

[0016] S1. First, the first folding ladder, the first handrail, the second handrail, the second folding ladder and the angle adjustment component are combined and connected. The second handrail and the second folding ladder are fixed together, the first folding ladder and the first handrail are fixed together, the first folding ladder and the first handrail are telescopically connected to the second handrail and the second folding ladder, and the angle adjustment component is connected to the second folding ladder so that the second folding ladder can be rotated and adjusted.

[0017] S2. After that, when adjusting the angle, the telescopic cylinder is activated. The telescopic cylinder drives the telescopic connecting column to extend and retract. The telescopic connecting column is fixedly connected to the second folding ladder, thereby pushing the second folding ladder to move. One side of the second folding ladder is connected to the rotating shaft. The rotating shaft is rotatably connected to the sleeve limit shaft. The second folding ladder can rotate and adjust around the sleeve limit shaft. The lower end of the sleeve limit shaft is fixed to the stable support plate and the inner guide rod to provide bottom support. When the limit hinge column is adjusted by the telescopic cylinder, the limit hinge column can cooperate with the first and second cooperative turntables. The first and second cooperative turntables rotate with the drive shaft.

[0018] S3. Finally, when the reaction force of the limiting hinge column acts on the first and second coordinating turntables, the first and second coordinating turntables rotate around the drive shaft, and the limiting sleeve helps the limiting sleeve and the second coordinating turntable to perform limiting rotation.

[0019] The beneficial effects of this invention are:

[0020] First, the present invention improves the stability during rotation through the structural arrangement of the driven connecting component. The supporting ring frame is fixed to the front plate frame and the stabilizing connecting plate, and the upper end of the stabilizing connecting plate is hinged to the first hinge frame. The first hinge frame and the second hinge frame are hinged to each other. The stabilizing connecting frame is fixed to the second folding ladder. When the second folding ladder moves, the first hinge frame and the second hinge frame can be adjusted accordingly, which can improve the stability during rotation, realize the limit adjustment of one side position of the second folding ladder, and increase the connection strength.

[0021] Second, the present invention can perform position control by actively adjusting the structure of the components. The telescopic cylinder can drive the telescopic connecting column to extend and retract. The telescopic connecting column is fixed to the second folding ladder. When the telescopic cylinder extends and retracts, due to the reaction force, it can drive the limiting hinge column to rotate on the first cooperating turntable. The first cooperating turntable rotates around the driving shaft. The telescopic connecting column drives the second folding ladder to rotate around the sleeve limiting shaft, thereby facilitating the position rotation control. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the main body of the present invention from the right side view.

[0025] Figure 3 This is a split view of the main body of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the angle adjustment component from the front view in this invention;

[0027] Figure 5 This is an exploded view of the angle adjustment component in this invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the frontal view of the active adjustment component in this invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the active adjustment component from the right side view in this invention;

[0030] Figure 8 This is a frontal perspective three-dimensional structural diagram of the second embodiment of the main body of the present invention.

[0031] In the diagram: 1-First folding ladder, 2-First handrail, 3-Second handrail, 4-Second folding ladder, 5-Angle adjustment component, 6-Active adjustment component, 7-Driven connection component, 8-Supporting ring frame, 9-Front plate frame, 10-Stabilizing connecting plate, 11-First hinge frame, 12-Second hinge frame, 13-Stabilizing connecting seat frame, 14-Rotating coupling shaft, 15-Sleeve limiting shaft, 16-Stabilizing support plate frame, 17-Internal guide rod, 18-Telescopic connecting column, 19-Telescopic cylinder, 20-Limiting hinge column, 21-Drive coupling shaft, 22-First cooperating turntable, 23-Limiting sleeve plate, 24-Positioning support frame, 25-Second cooperating turntable, 26-Rotating mating shaft, 27-Installation assembly frame, 28-Positioning stabilizing plate, 29-Installation grating plate. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] The invention will be further described below with reference to the accompanying drawings.

[0035] Example 1

[0036] like Figures 1-7 As shown, a fire rescue ladder for high-rise buildings according to the present invention includes a first folding ladder 1, a first handrail 2, a second handrail 3, a second folding ladder 4, and an angle adjustment component 5. The lower end of the first handrail 2 is fixedly connected to the first folding ladder 1, the first handrail 2 and the second handrail 3 are slidably connected, the lower end of the second handrail 3 is fixedly connected to the second folding ladder 4, and the bottom of the second folding ladder 4 is limited and adjusted with the angle adjustment component 5. The first folding ladder 1 and the first handrail 2 are fixed together, the second handrail 3 and the second folding ladder 4 are fixed together, and the first folding ladder 1, the first handrail 2 and the second handrail 3 and the second folding ladder 4 are telescopically connected. By telescopically extending, the length of the ladder is extended to facilitate rescue work.

[0037] The angle adjustment component 5 includes an active adjustment component 6 and a driven connection component 7. The driven connection component 7 is fixedly connected to the right end of the active adjustment component 6. The active adjustment component 6 and the driven connection component 7 are combined to form the angle adjustment component 5, which improves the stability of the connection. The driven connection component 7 performs cooperative adjustment work. The active adjustment component 6 allows the second folding ladder 4 to rotate on the active adjustment component 6, which facilitates rotation control.

[0038] Driven connecting component 7 includes a supporting ring frame 8, a front plate frame 9, a stabilizing connecting plate 10, a first hinge frame 11, a second hinge frame 12, and a stabilizing connecting seat frame 13. The front plate frame 9 is fixedly connected to the right side of the supporting ring frame 8, and the stabilizing connecting plate 10 is fixedly connected to the right side of the front plate frame 9. The first hinge frame 11 is hinged to the upper end of the stabilizing connecting plate 10, and the second hinge frame 12 is hinged to the upper end of the first hinge frame 11. The upper end of the second hinge frame 12 is connected to the stabilizing connecting seat frame 13. The hinged structure is fixedly connected to the supporting ring frame 8, the front plate frame 9, and the stabilizing connecting plate 10. The upper end of the stabilizing connecting plate 10 is hinged to the first hinge frame 11. The first hinge frame 11 is hinged to the second hinge frame 12. The second hinge frame 12 is hinged to the stabilizing connecting frame 13. The stabilizing connecting frame 13 is fixed to the second folding ladder 4. The rotation adjustment of the first hinge frame 11 and the second hinge frame 12 can be coordinated with the rotation adjustment of the second folding ladder 4.

[0039] The active adjustment component 6 includes a rotating shaft 14, a sleeve limiting shaft 15, a stabilizing support frame 16, and an inner guide rod 17. The center of the rotating shaft 14 is rotatably connected to the sleeve limiting shaft 15. The lower end of the sleeve limiting shaft 15 is fixedly connected to the stabilizing support frame 16. The lower end of the stabilizing support frame 16 is provided with the inner guide rod 17. The rotating shaft 14 rotates around the sleeve limiting shaft 15. The sleeve limiting shaft 15 is fixed by the stabilizing support frame 16 and the inner guide rod 17, which helps to perform the limiting rotation adjustment work.

[0040] The active adjustment component 6 also includes a telescopic connecting column 18, a telescopic cylinder 19, a limiting hinge column 20, a drive shaft 21, a first cooperating turntable 22, a limiting sleeve 23, a positioning support bracket 24, a second cooperating turntable 25, a rotational mating shaft 26, and a mounting assembly 27. The lower end of the telescopic connecting column 18 is telescopically connected to the telescopic cylinder 19, and the lower end of the telescopic cylinder 19 is limited and hinged to the limiting hinge column 20. The lower left side of the limiting hinge column 20 is fixedly connected to the first cooperating turntable 22, and the center of the first cooperating turntable 22 is fixedly connected to the drive shaft 21. Next, a second cooperating turntable 25 is fixedly connected to the right side of the drive shaft 21, and a rotating mating shaft 26 is fixedly connected to the right side of the second cooperating turntable 25. The telescopic cylinder 19 can drive the telescopic connecting column 18 to extend and retract. The telescopic cylinder 19 can drive the first cooperating turntable 22, the drive shaft 21, the second cooperating turntable 25, and the rotating mating shaft 26 to rotate through the reaction force. The drive shaft 21 and the second cooperating turntable 25 are limited by the limiting sleeve 23, which helps to stabilize the first cooperating turntable 22 and the second cooperating turntable 25.

[0041] The lower end of the first coordinating turntable 22 is rotatably connected to the limiting sleeve 23. The right side of the limiting sleeve 23 is fixedly connected to the positioning support bracket 24. The inner guide rod 17 is fixedly connected to the stable support plate 16 through the mounting assembly frame 27. The upper end of the telescopic connecting column 18 is fixedly connected to the middle of the second folding ladder 4. The left side of the second folding ladder 4 is rotatably connected to the sleeve limiting shaft 15 through the rotating connecting shaft 14. The upper end of the supporting ring frame 8 is fixedly connected to the stable support plate 16. The limiting sleeve 23 and the positioning support bracket 24 are symmetrically arranged about the first coordinating turntable 22. The lower end of the telescopic cylinder 19 is rotatably adjusted to the drive connecting shaft 21 and the first coordinating turntable 22 through the limiting hinge column 20. The upper end of the second hinge frame 12 is fixedly connected to the right side of the second folding ladder 4 through the stable connecting seat frame 13. The stable connecting seat frame 13 is fixedly connected to the second folding ladder 4.

[0042] A method for using a fire escape ladder in a high-rise building includes the following steps:

[0043] S1. First, the first folding ladder 1, the first handrail 2, the second handrail 3, the second folding ladder 4, and the angle adjustment component 5 are combined and connected. The second handrail 3 and the second folding ladder 4 are fixed together, the first folding ladder 1 and the first handrail 2 are fixed together, the first folding ladder 1 and the first handrail 2 are telescopically connected to the second handrail 3 and the second folding ladder 4, and the angle adjustment component 5 is connected to the second folding ladder 4 so that the second folding ladder 4 can be rotated and adjusted.

[0044] S2. After that, when adjusting the angle, the telescopic cylinder 19 is activated. The telescopic cylinder 19 drives the telescopic connecting column 18 to extend and retract. The telescopic connecting column 18 is fixedly connected to the second folding ladder 4, thereby pushing the second folding ladder 4 to move. One side of the second folding ladder 4 is connected to the rotating shaft 14. The rotating shaft 14 is rotatably connected to the sleeve limiting shaft 15. The second folding ladder 4 can rotate and adjust around the sleeve limiting shaft 15. The lower end of the sleeve limiting shaft 15 is fixed to the stable support frame 16 and the inner guide rod 17 to provide bottom support. When the limiting hinge column 20 is driven and adjusted by the telescopic cylinder 19, the limiting hinge column 20 can cooperate with the first cooperating turntable 22 and the second cooperating turntable 25. The first cooperating turntable 22 and the second cooperating turntable 25 rotate with the drive shaft 21.

[0045] S3. Finally, when the reaction force of the limiting hinge column 20 acts on the first cooperating turntable 22 and the second cooperating turntable 25, the first cooperating turntable 22 and the second cooperating turntable 25 rotate around the drive shaft 21, and the limiting sleeve 23 helps the limiting sleeve 23 and the second cooperating turntable 25 to perform limiting rotation.

[0046] The working principle of Embodiment 1 is as follows: In use, the first folding ladder 1, the first handrail 2, the second handrail 3, the second folding ladder 4, and the angle adjustment component 5 are combined and connected. The second handrail 3 and the second folding ladder 4 are fixed together, and the first folding ladder 1 and the first handrail 2 are fixed together. The first folding ladder 1, the first handrail 2, the second handrail 3, and the second folding ladder 4 are telescopically connected. The angle adjustment component 5 is connected to the second folding ladder 4, allowing the second folding ladder 4 to be rotated and adjusted. When angle adjustment is required, the telescopic cylinder 19 is activated. The telescopic cylinder 19 drives the telescopic connecting column 18 to extend and retract. The telescopic connecting column 18 is fixedly connected to the second folding ladder 4, thereby pushing the second folding ladder 4 to move. One side of the second folding ladder 4 is connected to the rotating shaft 14. The second folding ladder 4 is rotatably connected to the sleeve limiting shaft 15. The lower end of the sleeve limiting shaft 15 is fixed to the stable support frame 16 and the inner guide rod 17 to provide bottom support. When the limiting hinge column 20 is driven and adjusted by the telescopic cylinder 19, the limiting hinge column 20 can cooperate with the first cooperating turntable 22 and the second cooperating turntable 25. The first cooperating turntable 22 and the second cooperating turntable 25 rotate with the drive shaft 21. When the reaction force of the limiting hinge column 20 acts on the first cooperating turntable 22 and the second cooperating turntable 25, the first cooperating turntable 22 and the second cooperating turntable 25 rotate around the drive shaft 21. The limiting sleeve plate 23 helps the limiting sleeve plate 23 and the second cooperating turntable 25 to perform limiting rotation and complete the work.

[0047] Example 2

[0048] Based on Example 1, such as Figure 8 As shown, a positioning and stabilizing plate 28 is fixedly connected to the lower end of the supporting ring frame 8, and a mounting grid plate 29 is fixedly connected to the right side of the positioning and stabilizing plate 28.

[0049] In this embodiment, the positioning and stabilizing plate 28 is fixed to the mounting grid plate 29, and the positioning and stabilizing plate 28 is fixedly connected to the supporting ring frame 8. The connection between the positioning and stabilizing plate 28 and the mounting grid plate 29 helps to improve the overall stable connection performance of the angle adjustment component 5.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire escape ladder for high-rise buildings, comprising a first folding ladder (1), a first handrail (2), a second handrail (3), a second folding ladder (4), and an angle adjustment component (5), characterized in that: The lower end of the first handrail (2) is fixedly connected to the first folding ladder (1), the first handrail (2) and the second handrail (3) are slidably connected, the lower end of the second handrail (3) is fixedly connected to the second folding ladder (4), and the bottom of the second folding ladder (4) is limited and adjusted with the angle adjustment component (5). The angle adjustment component (5) includes an active adjustment component (6) and a driven connection component (7), and the driven connection component (7) is fixedly connected to the right end of the active adjustment component (6); The driven connecting component (7) includes a supporting ring frame (8), a front plate frame (9), a stabilizing connecting plate (10), a first hinge frame (11), a second hinge frame (12), and a stabilizing connecting seat frame (13). The front plate frame (9) is fixedly connected to the right side of the supporting ring frame (8), and the stabilizing connecting plate (10) is fixedly connected to the right side of the front plate frame (9). The first hinge frame (11) is hinged to the upper end of the stabilizing connecting plate (10), and the second hinge frame (12) is hinged to the upper end of the first hinge frame (11). The upper end of the second hinge frame (12) is hinged to the stabilizing connecting seat frame (13).

2. The fire escape ladder for high-rise buildings according to claim 1, characterized in that: The active adjustment component (6) includes a rotating connecting shaft (14), a sleeve limiting shaft (15), a stabilizing support frame (16), and an inner guide rod (17). The center of the rotating connecting shaft (14) is rotatably connected to the sleeve limiting shaft (15). The lower end of the sleeve limiting shaft (15) is fixedly connected to the stabilizing support frame (16), and the lower end of the stabilizing support frame (16) is provided with an inner guide rod (17).

3. A fire escape ladder for high-rise buildings according to claim 2, characterized in that: The active adjustment component (6) further includes a telescopic connecting column (18), a telescopic cylinder (19), a limiting hinge column (20), a drive shaft (21), a first cooperating turntable (22), a limiting sleeve (23), a positioning support frame (24), a second cooperating turntable (25), a rotational mating shaft (26), and an installation assembly frame (27). The lower end of the telescopic connecting column (18) is telescopically connected to the telescopic cylinder (19), and the lower end of the telescopic cylinder (19) is limited and hinged to the limiting hinge column (20). The lower left side of the limiting hinge column (20) is fixedly connected to the first cooperating turntable (22), and the center of the first cooperating turntable (22) is fixedly connected to the drive shaft (21). The right side of the drive shaft (21) is fixedly connected to the second cooperating turntable (25), and the right side of the second cooperating turntable (25) is fixedly connected to the rotational mating shaft (26).

4. A fire escape ladder for high-rise buildings according to claim 3, characterized in that: The lower end of the first coordinating turntable (22) is connected to the limiting sleeve (23) for limiting rotation. The right side of the limiting sleeve (23) is fixedly connected to the positioning support (24). The inner guide rod (17) is fixedly connected to the stable support plate (16) through the mounting combination frame (27).

5. A fire escape ladder for high-rise buildings according to claim 4, characterized in that: The upper end of the telescopic connecting column (18) is fixedly connected to the middle part of the second folding ladder (4). The left side of the second folding ladder (4) is rotatably connected to the sleeve limiting shaft (15) through the rotating connecting shaft (14). The upper end of the supporting ring frame (8) is fixedly connected to the stable support plate frame (16). The limiting sleeve plate (23) and the positioning support frame (24) are symmetrically arranged about the first coordinating turntable (22).

6. A fire escape ladder for high-rise buildings according to claim 5, characterized in that: The lower end of the telescopic cylinder (19) is rotated and adjusted by the limit hinge column (20) to the drive shaft (21) and the first cooperating turntable (22). The upper end of the second hinge frame (12) is fixedly connected to the right side of the second folding ladder (4) by the stabilizing connecting frame (13). The stabilizing connecting frame (13) is fixedly connected to the second folding ladder (4).

7. A fire escape ladder for high-rise buildings according to claim 6, characterized in that: The lower end of the supporting ring frame (8) is fixedly connected to a positioning and stabilizing plate (28), and the right side of the positioning and stabilizing plate (28) is fixedly connected to an installation grid plate (29).

8. A method for using a fire escape ladder in a high-rise building, comprising the fire escape ladder in a high-rise building as described in any one of claims 1-6, characterized in that, It includes the following steps: S1. First, the first folding ladder (1), the first handrail (2), the second handrail (3), the second folding ladder (4) and the angle adjustment component (5) are combined and connected. The second handrail (3) and the second folding ladder (4) are fixed together. The first folding ladder (1) and the first handrail (2) are fixed together. The first folding ladder (1), the first handrail (2) and the second handrail (3) and the second folding ladder (4) are telescopically connected. The angle adjustment component (5) is connected to the second folding ladder (4) so ​​that the second folding ladder (4) can be rotated and adjusted. S2. After that, when adjusting the angle, the telescopic cylinder (19) is activated. The telescopic cylinder (19) drives the telescopic connecting column (18) to extend and retract. The telescopic connecting column (18) is fixedly connected to the second folding ladder (4), thereby pushing the second folding ladder (4) to move. One side of the second folding ladder (4) is connected to the rotating shaft (14). The rotating shaft (14) is rotatably connected to the sleeve limiting shaft (15). The second folding ladder (4) can rotate and adjust around the sleeve limiting shaft (15). The lower end of the sleeve limiting shaft (15) is fixed to the stable support plate frame (16) and the inner guide rod (17) to support the bottom. When the limiting hinge column (20) is driven and adjusted by the telescopic cylinder (19), the limiting hinge column (20) can cooperate and move on the first cooperating turntable (22) and the second cooperating turntable (25). The first cooperating turntable (22) and the second cooperating turntable (25) rotate with the drive shaft (21). S3. Finally, when the reaction force of the limiting hinge column (20) acts on the first cooperating turntable (22) and the second cooperating turntable (25), the first cooperating turntable (22) and the second cooperating turntable (25) rotate around the drive shaft (21), and the limiting sleeve (23) helps the limiting sleeve (23) and the second cooperating turntable (25) to perform limiting rotation.

Images