Quick stowable fire escape

Abstract

This utility model relates to a fire ladder that can be quickly folded up, comprising multiple ladders connected to each other in pairs. The middle ladder has connecting mechanisms at both ends, and round holes are provided at both ends. The upper and lower ladders have insertion holes at both ends, and unlocking mechanisms are provided inside the upper and lower ladders. The advantages of this utility model are: the connecting mechanisms allow multiple ladders to be quickly connected and fixed after unfolding; after use, the unlocking mechanisms can simultaneously unlock the connecting mechanisms on both sides, achieving a quick folding and storage effect.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology, specifically to a fire ladder that can be quickly folded up. Background Technology

[0002] Fire ladders are crucial equipment in fire rescue operations, especially in high-rise building fires, where the rapid deployment and retrieval of ladders directly impacts rescue efficiency and personnel safety. Currently, most common folding fire ladders employ a multi-section hinged structure. When unfolding, each section must be manually locked on both sides; when folding, the connections on both sides of each section must be released sequentially, and then the connecting mechanisms manually restored to their original positions. This process is inefficient, and folding requires unlocking each connection point individually, making the operation cumbersome. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a fire ladder that can be quickly stored.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A quick-folding fire ladder includes multiple ladders connected in pairs. The middle ladder has connecting mechanisms at both ends, and circular holes are provided at both ends. Insertion holes are provided at both ends of the upper and lower ladders. Each connecting mechanism includes a U-shaped rod. A circular plate is fixed inside the outer circular hole, and a circular rod is rotatably connected inside the circular plate. A circular groove is provided at the end of the U-shaped rod near the circular plate, and the circular rod is located inside the groove. Two retaining grooves are provided on the inner sidewall of the groove, and retaining bars are provided inside the retaining grooves. Unlocking mechanisms are provided inside the upper and lower ladders. The beneficial effects of this utility model are: through the connecting mechanism, multiple ladders can be quickly connected and fixed after unfolding; after use, the connecting mechanism on the front and rear sides can be unlocked simultaneously through the unlocking mechanism to achieve the effect of quick folding and storage.

[0005] Furthermore, the stop bar and the round rod are fixedly connected, and a tension spring is fixed between the round plate and the U-shaped rod. The tension spring can hold the U-shaped rod and prevent it from moving.

[0006] Furthermore, a torsion spring is fixed to the outer wall of the round rod, and the other end of the torsion spring is fixedly connected to the inner wall of the outer round hole. The elastic force of the torsion spring is greater than that of the pull rope spring. After the U-shaped rod is moved out of the insertion hole, the torsion spring round rod and the U-shaped rod rotate, and the U-shaped rod rotates back to its original position without the need for manual rotation.

[0007] Furthermore, the unlocking mechanism includes a rotating cylinder, inside which two fixed cylinders are rotatably connected. The multiple fixed cylinders are respectively fixedly connected to the upper and lower ladders. The fixed cylinders have two rotation limiting grooves inside, and a top rod is provided inside the fixed cylinder. The rotation limiting grooves have rotation limiting strips inside, and the rotation limiting strips are fixedly connected to the top rod. When the top rod moves, it pushes the U-shaped rod, and the U-shaped rod will move out of the insertion hole without manual pulling, which is simple and convenient.

[0008] Furthermore, the outer side wall of the push rod is provided with a spiral groove, and two extrusion rods are fixed on the inner side wall of the rotating cylinder. The extrusion rods are located inside the spiral groove. When the rotating cylinder is rotated, the rotating cylinder carries the extrusion rods to rotate inside the spiral groove. The extrusion rods extrude the spiral groove, causing the front and rear push rods to move.

[0009] Furthermore, the rotating drum is equipped with a connecting rod inside. The two ends of the connecting rod are located inside the two push rods and are slidably connected to the two push rods. A spring is fixed to the outer wall of the push rod. The other end of the spring is fixedly connected to the rotating drum. When the rotating drum is rotated, the spring deforms and releases the rotating drum. The spring causes the rotating drum to rotate back to its original position, and the push rod also returns to its original position, which facilitates the next connection.

[0010] Furthermore, the outer side wall of the connecting rod is rotatably connected to limit plates on both sides of the spring. The limit plates are fixedly connected to the rotating cylinder, which can limit the connecting rod and prevent it from moving.

[0011] Furthermore, the top and bottom of the ladder in the middle section are provided with two slanted slots to facilitate the U-shaped rod entering the round hole in the middle section. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the connecting mechanism of this utility model; Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A; Figure 4 This is a cross-sectional view of the U-shaped rod of this utility model; Figure 5 This is a cross-sectional view of the unlocking mechanism in this utility model; Figure 6 This utility model Figure 5 A schematic diagram of the structure at point B.

[0013] The attached diagram lists the components represented by each number as follows: 1. Ladder; 2. Inclined groove; 3. Connecting mechanism; 301. U-shaped rod; 302. Tension spring; 303. Torsion spring; 304. Circular plate; 305. Stop bar; 306. Stop groove; 307. Circular groove; 308. Circular rod; 4. Unlocking mechanism; 401. Rotating cylinder; 402. Top rod; 403. Rotation limiting groove; 404. Fixed cylinder; 405. Rotation limiting bar; 406. Spiral groove; 407. Pressing rod; 408. Connecting rod; 409. Clockwork spring; 410. Limiting plate; 5. Circular hole; 6. Insertion hole. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0017] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0018] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0019] Example 1 Figure 1 This utility model provides a fire escape ladder that can be quickly stored. Figure 2 This is a sectional view of the middle ladder of this utility model. Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A in the middle. Figure 4 This is a cross-sectional view of the U-shaped rod of this utility model. Figures 1 to 4As shown, the device includes multiple ladders 1, which are connected to each other in pairs. The left and right ends of the middle ladder 1 are equipped with connecting mechanisms 3. Circular holes 5 are opened at both ends of the middle ladder 1, and insertion holes 6 are opened at both ends of the upper and lower ladders 1. The connecting mechanism 3 includes a U-shaped rod 301. A circular plate 304 is fixed inside the outer circular hole 5. A circular rod 308 is rotatably connected inside the circular plate 304. A circular groove 307 is opened at the end of the U-shaped rod 301 near the circular plate 304, and the circular rod 308 is located inside the circular groove 307. Two retaining grooves 306 are provided on the inner side wall of 307. A retaining strip 305 is provided inside the retaining groove 306. An unlocking mechanism 4 is provided inside the upper and lower ladders 1. The retaining strip 305 and the round rod 308 are fixedly connected. A tension spring 302 is fixed between the round plate 304 and the U-shaped rod 301. A torsion spring 303 is fixed on the outer side wall of the round rod 308. The other end of the torsion spring 303 is fixedly connected to the inner side wall of the outer round hole 5. The limiting plate 410 and the rotating cylinder 401 are fixedly connected. Two inclined grooves 2 are provided at the top and bottom of the middle ladder 1.

[0020] Unfold ladder 1, move and rotate U-shaped rod 301 so that one end of U-shaped rod 301 is inserted into socket 6. Tension spring 302 can hold U-shaped rod 301 to prevent it from moving. This can fix multiple unfolded ladders 1 to prevent bending. When U-shaped rod 301 rotates, torsion spring 303 deforms. After use, move U-shaped rod 301 out of socket 6. Torsion spring 303 rotates U-shaped rod 301 in reverse, so that U-shaped rod 301 returns to its original position. Tension spring 302 pulls U-shaped rod 301, and one end of U-shaped rod 301 is inserted into the middle round hole 5, returning to its original state. No manual rotation is required, which is convenient and quick, and increases the speed of storage.

[0021] Example 2 Based on Embodiment 1, the present invention can be further improved as follows, such as... Figure 5 , Figure 6 As shown, the unlocking mechanism 4 includes a rotating cylinder 401. Two fixed cylinders 404 are rotatably connected inside the rotating cylinder 401. The fixed cylinders 404 are respectively fixedly connected to the upper and lower ladders 1. Two rotation limiting grooves 403 are opened inside the fixed cylinders 404. A top rod 402 is provided inside the fixed cylinder 404. A rotation limiting strip 405 is provided inside the rotation limiting grooves 403. The rotation limiting strip 405 is fixedly connected to the top rod 402. A connecting rod 408 is provided inside the rotating cylinder 401. The two ends of the connecting rod 408 are located inside the two top rods 402 and are slidably connected to the two top rods 402. A spring spring 409 is fixed to the outer wall of the top rod 402. The other end of the spring spring 409 is fixedly connected to the rotating cylinder 401. Limit plates 410 are rotatably connected to both sides of the outer wall of the connecting rod 408 on both sides of the spring spring 409. Rotating the drum 401 causes the pressing rod 407 to rotate inside the spiral groove 406. The pressing rod 407 presses against the spiral groove 406, causing the two push rods 402 to move. The push rods 402 then push the U-shaped rod 301, causing it to move out of the insertion hole 6. Both U-shaped rods 301 unlock simultaneously, eliminating the need for manual pulling and improving storage efficiency. After rotating the drum 401, the spring spring 409 deforms, releasing the drum 401. The spring spring 409 then rotates the drum 401 back to its original position, and the push rods 402 also return to their original position for easy reconnection.

[0022] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A fire escape ladder that can be quickly folded up, characterized in that, include: Multiple ladders (1) are connected to each other in pairs. The middle ladder (1) is provided with connecting mechanisms (3) at both ends. The middle ladder (1) is provided with round holes (5) at both ends. The upper and lower ladders (1) are provided with insertion holes (6) at both ends. The connecting mechanism (3) includes a U-shaped rod (301). A round plate (304) is fixed inside the outer round hole (5). A round rod (308) is rotatably connected inside the round plate (304). A round groove (307) is provided at one end of the U-shaped rod (301) near the round plate (304). The round rod (308) is located inside the round groove (307). Two stop grooves (306) are provided on the inner side wall of the round groove (307). A stop bar (305) is provided inside the stop groove (306). An unlocking mechanism (4) is provided inside the upper and lower ladders (1).

2. The fire escape ladder with rapid storage according to claim 1, characterized in that, The stop bar (305) and the round rod (308) are fixedly connected, and a tension spring (302) is fixed between the round plate (304) and the U-shaped rod (301).

3. A fire escape ladder with rapid storage according to claim 2, characterized in that, A torsion spring (303) is fixed to the outer wall of the round rod (308), and the other end of the torsion spring (303) is fixedly connected to the inner wall of the outer round hole (5).

4. A fire escape ladder with rapid storage according to claim 1, characterized in that, The unlocking mechanism (4) includes a rotating cylinder (401), inside which two fixed cylinders (404) are rotatably connected. The multiple fixed cylinders (404) are respectively fixedly connected to the upper and lower ladders (1). The fixed cylinders (404) have two rotation limiting grooves (403) inside. The fixed cylinders (404) are provided with a top rod (402) inside. The rotation limiting grooves (403) are provided with rotation limiting strips (405) inside. The rotation limiting strips (405) and the top rods (402) are fixedly connected.

5. A fire escape ladder with rapid storage according to claim 4, characterized in that, The outer side wall of the top rod (402) is provided with a spiral groove (406), and the inner side wall of the rotating cylinder (401) is fixed with two extrusion rods (411), which are located inside the spiral groove (406).

6. A fire escape ladder with rapid storage according to claim 5, characterized in that, The rotating drum (401) is provided with a connecting rod (408) inside. The two ends of the connecting rod (408) are located inside the two top rods (402) respectively and are slidably connected to the two top rods (402). A spring spring (409) is fixed on the outer wall of the top rod (402), and the other end of the spring spring (409) is fixedly connected to the rotating drum (401).

7. A fire escape ladder with rapid storage according to claim 6, characterized in that, The outer wall of the connecting rod (408) is rotatably connected to the limit plate (410) on both sides of the spring spring (409), and the limit plate (410) and the rotating cylinder (401) are fixedly connected.

8. A fire escape ladder with rapid storage according to claim 1, characterized in that, The ladder (1) in the middle section has two inclined slots (2) at the top and bottom.

Images