A quick deployment mechanism for a folding fire emergency escape ladder
By designing a rapid deployment mechanism for a folding fire emergency escape ladder, the rapid deployment of the escape ladder is achieved through the use of lifting columns, rotary cylinders, and threaded connections. This solves the problems of large space occupation and slow deployment of escape ladders, and provides a rapid evacuation route in emergency situations.
Patent Information
- Application Number
- CN202521595619.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-29
AI Technical Summary
Existing escape ladders occupy a large space in the grid passageway, affecting daily walking and equipment handling, and their deployment is not fast enough.
Design a folding fire emergency escape ladder, which includes a lifting column, a rotating cylinder, side rails and folding steps. It can be quickly unfolded by rotating the threaded connection of the inner core and can be expanded into a horizontal state in an emergency using a mechanical structure.
It occupies little space under normal circumstances, does not affect walking or equipment handling, and can be quickly deployed in an emergency to provide a reliable evacuation route.
Smart Images
Figure CN224679433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rapid deployment mechanism, specifically a rapid deployment mechanism for a folding fire emergency escape ladder, belonging to the technical field of fire emergency facilities. Background Technology
[0002] In production plants, especially those with vertical partitions and multi-level layouts, regulations require separate escape routes between each floor for fire emergencies. Currently, most plants use grid tunnels to create multi-level partitions, with escape ladders installed between them for personnel transfer. However, this method has a significant drawback: to save space, many plants have already narrow grid tunnels, and the escape ladders further encroach on this space. This results in the already narrow cross-sectional area of the grid tunnel being further reduced by the escape ladders. This severely hinders normal movement of personnel within the grid tunnels during routine operations, not to mention the potential impact on the handling of equipment and materials. Therefore, it is necessary to design an escape ladder that maintains a small cross-section during normal operations, saving grid tunnel space, while being able to deploy quickly in emergencies. Utility Model Content
[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a quick-deployment mechanism for a foldable fire emergency escape ladder. The mechanism has a simple and reasonable structure, low daily space occupation, and is convenient and quick to use.
[0004] The technical solution adopted by this utility model is as follows: a quick-deployment mechanism for a foldable fire emergency escape ladder, including an escape ladder body disposed between upper and lower passage grilles; an escape opening is provided on the upper passage grille relative to the escape ladder body, and the escape ladder body has a lifting column; a rotating cylinder is provided on the surface of the lower passage grille relative to the lifting column; side stops are provided on both sides of the lifting column; and a folding step is provided between the side stops and the lifting column.
[0005] Furthermore, a rotating inner core is rotatably connected to the inner side of the lifting column; the rotating inner core is axially fixed relative to the lifting column; the rotating inner core penetrates the lifting column; the upper and lower ends of the rotating inner core are located on the outer side of the lifting column.
[0006] Furthermore, the upper end of the rotating inner core is provided with a handle; the lower outer side of the rotating inner core is provided with an external thread; the inside of the rotary cylinder is provided with an internal thread; and the bottom of the rotating inner core is helically connected to the inside of the rotary cylinder.
[0007] Furthermore, guide grooves are provided at the bottom of the upper channel grille and on the surface of the lower channel grille; the upper and lower ends of the side guard are slidably connected in the guide grooves.
[0008] Furthermore, the folding steps are symmetrically arranged on both sides of the lifting column and evenly distributed along its length.
[0009] Furthermore, the inner sides of the lifting column and the side rails are respectively provided with hinge seats; the two ends of the folding step are respectively rotatably connected to the hinge seats of the lifting column and the side rails.
[0010] This invention offers the following advantages: Under normal circumstances, the side rails are extremely close to the symmetrical sides of the lifting column, and the folding steps are folded between them. Therefore, the cross-section of the entire escape ladder is extremely small, and the proportion of the passageway grid it occupies is also relatively small, having minimal impact on people's walking and working under normal conditions. However, during a fire emergency, when workers in the upper grid passage need to quickly evacuate, they only need to operate the rotating core to lower the entire lifting column. As the column descends, the angle of the folding steps changes, and the side rails move away from the lifting column until the folding steps are horizontal. In this state, workers can step on the folding steps on both sides to descend and evacuate. The entire process is quick, convenient, and purely mechanically controlled, ensuring extremely high reliability. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the connection structure between the folding steps, the rising column, and the side rails.
[0013] Figure 3 This is a structural diagram of the lifting column and the rotating drum.
[0014] Figure 4 This is a schematic diagram of the structure of the present invention in its unfolded state.
[0015] Among them: 1 is the passage grille, 2 is the lifting column, 2-1 is the rotating inner core, 3 is the rotary cylinder, 4 is the side guard, 5 is the folding step, 6 is the guide groove, 7 is the hinge seat, 8 is the escape hatch, and 9 is the handle. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0017] See Figures 1-4This application discloses a quick-deployment mechanism for a foldable fire emergency escape ladder, including an escape ladder body disposed between upper and lower passage grilles; the upper passage grille 1 is provided with an escape opening relative to the escape ladder body, and the escape ladder body has a lifting column 2; a rotating cylinder 3 is disposed on the surface of the lower passage grille 1 relative to the lifting column 2; side stops 4 are disposed on both sides of the lifting column 2; and a folding step 5 is disposed between the side stops 4 and the lifting column 2.
[0018] Furthermore, the inner side of the lifting column 2 is rotatably connected to a rotating inner core 2-1; the rotating inner core 2-1 is axially fixed relative to the lifting column 2; the rotating inner core 2-1 penetrates the lifting column 2; the upper and lower ends of the rotating inner core 2-1 are located on the outer side of the lifting column 2.
[0019] Furthermore, the upper end of the rotating inner core 2-1 is provided with a handle 9; the lower outer side of the rotating inner core 2-1 is provided with an external thread; the inside of the rotary cylinder 3 is provided with an internal thread; and the bottom of the rotating inner core 2-1 is spirally connected to the rotary cylinder 3.
[0020] Furthermore, guide grooves 6 are respectively provided on the bottom of the upper channel grille 1 and the surface of the lower channel grille 1; the upper and lower ends of the side baffle 4 are slidably connected in the guide grooves 6.
[0021] Furthermore, the folding steps 5 are symmetrically arranged on both sides of the lifting column 2 and are evenly distributed along its length.
[0022] Furthermore, the inner sides of the lifting column 2 and the side rails 4 are respectively provided with hinge seats 7; the two ends of the folding step 5 are respectively rotatably connected to the hinge seats 7 of the side rails 4 of the lifting column 2.
[0023] Working principle: In case of fire emergency, simply operate the handle 9 at the upper end of the rotating inner core 2-1 to make the rotating inner core 2-1 rotate within the lifting column 2. Since the rotating inner core 2-1 and the lifting column 2 are axially fixed, when the rotating inner core 2-1 rotates, its bottom is inside the rotating cylinder 3, causing it to descend due to the screw thread, which also lowers the lifting column 2. As the lifting column 2 descends, the inclination angle of the folding step 5 connected to its outer side gradually changes, pushing the side rail 4 outward until the folding step 5 is completely horizontal and can withstand being stepped on. Furthermore, because the rotating inner core 2-1 is screwed and confined within the rotating cylinder 3, it cannot move axially when not rotating. Therefore, the angle between the lifting column 2 and the folding step 5, and the angle between the folding step 5 and the side rail, will not change.
[0024] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A quick-deployment mechanism for a folding fire emergency escape ladder, comprising an escape ladder body disposed between upper and lower passage grilles; the upper passage grille (1) having an escape opening relative to the escape ladder body, characterized in that: The escape ladder body has a lifting column (2); a rotating cylinder (3) is provided on the surface of the lower channel grid (1) relative to the lifting column (2); side blocks (4) are provided on both sides of the lifting column (2); and a folding step (5) is provided between the side blocks (4) and the lifting column (2).
2. The rapid deployment mechanism of a folding fire emergency escape ladder according to claim 1, characterized in that: The inner side of the lifting column (2) is rotatably connected to a rotating inner core (2-1); the rotating inner core (2-1) is axially fixed relative to the lifting column (2); the rotating inner core (2-1) passes through the lifting column (2); the upper and lower ends of the rotating inner core (2-1) are located on the outer side of the lifting column (2).
3. The rapid deployment mechanism of a folding fire emergency escape ladder according to claim 2, characterized in that: The upper end of the rotating inner core (2-1) is provided with a handle (9); the lower outer side of the rotating inner core (2-1) is provided with an external thread; the inside of the rotary cylinder (3) is provided with an internal thread; the bottom of the rotating inner core (2-1) is spirally connected to the inside of the rotary cylinder (3).
4. The rapid deployment mechanism of a folding fire emergency escape ladder according to claim 3, characterized in that: The bottom of the upper channel grille (1) and the surface of the lower channel grille (1) are respectively provided with guide grooves (6); the upper and lower ends of the side guard (4) are slidably connected in the guide grooves (6).
5. The rapid deployment mechanism of a folding fire emergency escape ladder according to claim 4, characterized in that: The folding steps (5) are symmetrically arranged on both sides of the lifting column (2) and evenly distributed along its length.
6. The rapid deployment mechanism of a folding fire emergency escape ladder according to claim 5, characterized in that: The inner sides of the lifting column (2) and the side rails (4) are respectively provided with hinge seats (7); the two ends of the folding step (5) are rotatably connected to the hinge seats (7) of the side rails (4) of the lifting column (2).