Escape ladder
By introducing adjustable installation components into the escape ladder, the problems of unstable installation and difficulty in use have been solved, enabling stable use and safe evacuation under different conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ANGE FIRE EQUIPMENT CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-12
AI Technical Summary
The fixed size of the grab hooks on existing escape ladders makes it difficult to accommodate different wall thicknesses and window frame widths, resulting in unstable installation. The small distance between the step and the wall increases the difficulty of descent and poses a risk of secondary injury.
The design incorporates installation components, including side blocks, threaded grooves, bolts, jacks, hooks, threaded rings, and support rods. Through threaded connections and an adjustable structure, the escape ladder can be installed adaptably and used stably.
It enables stable installation of escape ladders under different wall and window frame conditions, provides suitable footholds, reduces usage risks, and increases practicality and safety.
Smart Images

Figure CN224228599U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of escape ladder technology, specifically to an escape ladder. Background Technology
[0002] An escape ladder is an auxiliary device used for the rapid evacuation of people in building emergencies. It can be quickly deployed through windows or balconies to support the weight of a person in the event of a fire, earthquake, or other sudden incident.
[0003] However, existing escape ladders still have some shortcomings. For example, the hooks of escape ladders are usually of fixed size and cannot be adjusted, making it difficult to be compatible with different wall thicknesses and window frame widths. This results in them not being able to be securely fastened in many buildings, thus affecting the overall stability and reliability of the installation. At the same time, the steps are too close to the wall, and when users descend the ladder, the gap between the steps and the wall is too small, making it difficult to find a suitable foothold. This not only increases the difficulty of descending but may also cause secondary injuries due to missing a step. To solve the above problems, we propose an escape ladder. Utility Model Content
[0004] In view of the shortcomings of the existing technology, this utility model provides an escape ladder to solve the problems mentioned in the background art.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] An escape ladder includes: two support frames, each with a reinforcing tube fixedly mounted on its support frame bracket; a plurality of footboards are provided on one side of each support frame; and an iron chain is provided on one side of each support frame; and an installation assembly is provided on the left and right sides of each footboard for installing the footboard.
[0007] By adopting the above technical solution and setting up installation components, the escape ladder can be made compatible with different wall thicknesses and window frame widths, thus ensuring stable installation for subsequent use.
[0008] Preferably, the mounting assembly includes two side blocks, which are respectively fixedly mounted on the left and right sides of the pedal. One side of each side block and the support frame is provided with a threaded groove, and a bolt is threaded into the internal thread of the threaded groove. The bolt is sleeved together with the iron chain.
[0009] By adopting the above technical solution, and by setting bolts for connecting through the iron chain and threaded groove, the support frame and pedal can be assembled and installed by iron chain. At the same time, it is convenient for users to replace damaged pedals, thus increasing practicality.
[0010] Preferably, the mounting assembly further includes: a jacking pipe, which is fixedly mounted on the top surface of the support frame, the outer wall of the jacking pipe is threaded, the inside of the jacking pipe is fitted with a hook, the outer wall of the jacking pipe is provided with a limiting hole, and the outer wall of the hook is fixedly mounted with a side shaft, which is fitted together with the limiting hole.
[0011] By adopting the above technical solution and setting a side axis, the length can be adjusted during use through the hook and the sleeve of the top pipe, thus adapting to walls and window frames of different thicknesses for subsequent stable installation.
[0012] Preferably, the mounting assembly further includes: a threaded ring, which is threadedly connected to the outer wall of the top pipe, the inner wall of the threaded ring having an inner ring groove, a rolling groove having a side of the side shaft having a ball rolled inside the rolling groove, and the side shaft being sleeved with the inner ring groove.
[0013] By adopting the above technical solution and setting the roller groove, the threaded ring can be rotated during use to move up and down on the outer wall of the jacking pipe. At this time, the side shaft will rotate in the inner ring groove and move along with the hook, thereby achieving the effect of adjusting the length of the hook.
[0014] Preferably, the mounting assembly further includes a support rod, which is fixedly mounted on the outer wall of the side block, and the top ends of the support rod, the support frame, and the hook are all fitted with rubber pads.
[0015] By adopting the above technical solution, a support rod is set to support the wall, thereby keeping the pedal away from the wall and creating a foothold for easy descent. At the same time, the rubber pad further increases the stability during use.
[0016] Preferably, an anti-slip sleeve is fixedly installed on the outer wall of the pedal.
[0017] By adopting the above technical solution and setting anti-slip sleeves, it is easy for users to step on the product and prevent slipping.
[0018] In summary, the present invention has the following main advantages:
[0019] By incorporating installation components, the escape ladder is made compatible with different wall thicknesses and window frame widths, ensuring stable installation for future use. Bolts are used to pass through chains and threaded grooves for connection, allowing the support frame and steps to be assembled via chains. This also facilitates user replacement of damaged steps, increasing practicality.
[0020] By setting a side shaft, the length of the jacking pipe can be adjusted during use by fitting the hook and the jacking pipe together, thus adapting to walls and window frames of different thicknesses for stable installation. By setting a roller groove, the threaded ring can be rotated to move up and down on the outer wall of the jacking pipe during use. At this time, the side shaft will rotate in the inner ring groove and move the hook along with it, thereby achieving the effect of adjusting the length of the hook.
[0021] By setting up support rods to support the wall, the pedals are moved away from the wall, thus creating a foothold for easy descent. At the same time, the rubber pads further increase stability during use, and the anti-slip sleeves prevent slipping. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0023] Figure 2 yes Figure 1 A magnified schematic diagram of the structure of part A in the diagram;
[0024] Figure 3 This is a schematic diagram of the hook structure of this utility model.
[0025] Reference numerals: 100, support frame; 200, reinforcing tube; 300, pedal; 400, chain; 500, mounting assembly; 501, side block; 502, threaded groove; 503, bolt; 504, jacking tube; 505, hook; 506, limiting hole; 507, side shaft; 508, threaded ring; 509, inner ring groove; 510, roller groove; 511, ball bearing; 512, support rod; 513, rubber pad; 600, anti-slip sleeve. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the present utility model embodiments clearer, the technical solutions of the present utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0027] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.
[0028] refer to Figures 1-3An escape ladder includes: two support frames 100, with reinforcing tubes 200 fixedly mounted on the two support frames 100; a plurality of footboards 300 are provided on one side of each support frame 100; an iron chain 400 is provided on one side of each support frame 100; and mounting components 500 are provided on the left and right sides of each footboard 300 for mounting the footboard 300. By using the mounting components 500, the escape ladder is made compatible with different wall thicknesses and window frame widths, thus ensuring stable installation for subsequent use. The mounting components 500 include: two... Side blocks 501 are fixedly installed on the left and right sides of the pedal 300 respectively. Threaded grooves 502 are opened on one side of both the side blocks 501 and the support frame 100. Bolts 503 are threaded inside the threaded grooves 502. The bolts 503 are sleeved together with the iron chain 400. By setting the bolts 503 to pass through the iron chain 400 and the threaded grooves 502 for connection, the support frame 100 and the pedal 300 can be assembled and installed by the iron chain 400. At the same time, it is convenient for users to replace the damaged pedal 300, increasing practicality.
[0029] refer to Figures 1-3 The installation assembly 500 further includes: a jacking pipe 504, which is fixedly installed on the top surface of the support frame 100. The outer wall of the jacking pipe 504 is threaded, and a hook 505 is sleeved inside the jacking pipe 504. A limiting hole 506 is formed on the outer wall of the jacking pipe 504, and a side shaft 507 is fixedly installed on the outer wall of the hook 505. The side shaft 507 is sleeved with the limiting hole 506. By setting the side shaft 507, the length of the jacking pipe 504 can be adjusted during use through the sleeved connection of the hook 505 and the jacking pipe 504, thus adapting to walls and window frames of different thicknesses for subsequent stable installation. 500 also includes: a threaded ring 508, which is threadedly connected to the outer wall of the jacking pipe 504. The inner wall of the threaded ring 508 has an inner ring groove 509. A roller groove 510 is provided on one side of the side shaft 507. A ball bearing 511 is rolled inside the roller groove 510. The side shaft 507 is sleeved with the inner ring groove 509. By setting the roller groove 510, the threaded ring 508 can be rotated during use to move it up and down on the outer wall of the jacking pipe 504. At this time, the side shaft 507 will rotate in the inner ring groove 509 and move the hook 505 together, thereby achieving the effect of adjusting the length of the hook 505.
[0030] refer to Figures 1-3The installation assembly 500 further includes a support rod 512, which is fixedly installed on the outer wall of the side block 501. The top of the support rod 512, the support frame 100, and the hook 505 are all fitted with rubber pads 513. By setting the support rod 512, the wall is supported, thereby moving the pedal 300 away from the wall and creating a foothold for easy descent. At the same time, the rubber pads 513 further increase the stability during use. The outer wall of the pedal 300 is fixedly installed with an anti-slip sleeve 600, which facilitates the user's stepping and prevents slipping.
[0031] Working principle: Please refer to Figures 1-3 As shown, during use, the support frame 100 and the pedal 300 can be connected by bolts 503 through the iron chain 400 and threaded groove 502, and the pedal 300 can be assembled and installed by the iron chain 400. This also makes it easy for users to replace damaged pedals 300, increasing practicality. During use, the threaded ring 508 can be rotated to move up and down on the outer wall of the jacking pipe 504. At this time, the side shaft 507 will rotate in the inner ring groove 509 and move the hook 505, thereby adjusting the length of the hook 505. By setting the support rod 512 to support the wall, the pedal 300 is moved away from the wall, thus creating a foothold for easy descent. At the same time, the rubber pad 513 can further increase the stability during use.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that, unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. Terms such as “comprising” or “including” as used in this invention mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as “connection” or “linked” are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as “up,” “down,” “left,” and “right” are used only to indicate relative positional relationships, and the relative positional relationship may also change accordingly when the absolute position of the described object changes.
[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An escape ladder, characterized in that, include: Two support frames (100), two support frames (100) are fixedly mounted with reinforcing tubes (200), a number of pedals (300) are provided on one side of the support frame (100), and an iron chain (400) is provided on one side of the support frame (100). Mounting components (500) are disposed on the left and right sides of the pedal (300) for mounting the pedal (300).
2. An escape ladder according to claim 1, characterized in that, The mounting component (500) includes: Two side blocks (501) are fixedly installed on the left and right sides of the pedal (300) respectively. Both the side blocks (501) and the support frame (100) have threaded grooves (502) on one side. Bolts (503) are threaded inside the threaded grooves (502). The bolts (503) are sleeved together with the iron chain (400).
3. An escape ladder according to claim 2, characterized in that, The mounting assembly (500) also includes: A jacking pipe (504) is fixedly installed on the top surface of the support frame (100). The outer wall of the jacking pipe (504) is threaded. A hook (505) is sleeved inside the jacking pipe (504). A limiting hole (506) is opened on the outer wall of the jacking pipe (504). A side shaft (507) is fixedly installed on the outer wall of the hook (505). The side shaft (507) is sleeved together with the limiting hole (506).
4. An escape ladder according to claim 3, characterized in that, The mounting assembly (500) also includes: A threaded ring (508) is threaded to the outer wall of the top pipe (504). The inner wall of the threaded ring (508) is provided with an inner ring groove (509). A roller groove (510) is provided on one side of the side shaft (507). A ball (511) is rolled inside the roller groove (510). The side shaft (507) is sleeved with the inner ring groove (509).
5. An escape ladder according to claim 4, characterized in that, The mounting assembly (500) also includes: The support rod (512) is fixedly installed on the outer wall of the side block (501). The top of the support rod (512), the support frame (100) and the hook (505) are all fitted with rubber pads (513).
6. An escape ladder according to claim 1, characterized in that, The outer wall of the pedal (300) is fixedly fitted with an anti-slip sleeve (600).