Fireproof escape multifunctional folding ladder device for fire rescue

Abstract

The fireproof escape multifunctional folding ladder device comprises a prefabricated folding ladder and a fireproof assembly, the fireproof assembly comprises a protective shell, two fireproof cloth rollers and a folding and unfolding driving mechanism, the two fireproof cloth rollers are rotationally arranged at the two ends in the protective shell respectively, and the fireproof cloth rollers are arranged in the protective shell. Fireproof cloth is wound on the fireproof cloth roller, the protective shell is fixedly connected to the top end of the prefabricated folding ladder, and the retracting and releasing driving mechanism is arranged in the protective shell and used for driving the fireproof cloth roller to rotate so as to retract and release the fireproof cloth. The device is installed at a fire rescue window in a normalized mode and can be folded and stored, downstairs residents cannot be affected, rapid escape can be achieved in an emergency, and meanwhile fireproof cloth is arranged on the two sides of the prefabricated folding ladder, so that the situation that escape is affected by fire spreading in the escape process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire fighting and rescue, and particularly relates to a multifunctional folding ladder device for fire fighting and rescue and fire escape. Background Technique

[0002] With the advancement of the urbanization process, the demand for high-rise buildings in urban construction is becoming more and more urgent. High-rise buildings have become the building spaces used in people's daily lives, and their building heights have continuously refreshed people's understanding of them. At the same time, the speed of urban high-rise building construction has far exceeded the development of fire fighting and rescue technologies and equipment. Especially, the height of super high-rise buildings has exceeded the maximum rescue height of existing fire fighting and rescue ladder trucks, making the fire fighting and rescue of high-rise buildings face severe problems currently. At present, outdoor fire fighting and rescue is carried out by firefighters boarding a fire fighting ladder to reach the floor where the trapped people are located, and the indoor trapped people are rescued by breaking through the fire fighting and rescue window. The limitation of this rescue method is that in the face of super high-rise buildings, bad weather and rescue environments, it is impossible to effectively rescue the trapped people in the first time, increasing the rescue difficulty; at the same time, when the indoor trapped people face the blockage of existing evacuation channels and safety exits and cannot evacuate through the indoor fire fighting channels, they can only passively wait for the firefighters to carry out the rescue, which increases the probability of casualties and misses the best escape opportunity.

[0003] In the patent document with the publication number: CN116427842A, a fire escape soft ladder for high-rise buildings is disclosed. When the device is in use, the user places the fireproof isolation board of the escape soft ladder at the window. Then, the heat-resistant telescopic rod stretches to drive the heat-resistant strong suction cup to move forward. When the heat-resistant strong suction cup adsorbs to the wall, the heat-resistant telescopic rod stops stretching. Then, the fireproof rope is taken out from the inside of the fireproof sleeve and fixed at the window, making the fixing effect of the escape soft ladder better. After the fireproof isolation board is fixed, the soft ladder frame is placed outside the window. The retractable pedal assembly can be unfolded under the action of gravity, which is convenient for the user to use. The retractable pedal assembly increases the load-bearing area of the feet and improves the safety of the soft ladder during use. Finally, the user escapes by placing the hands on the upper handrail and the feet on the retractable pedal assembly. When moving on the retractable pedal assembly, the hands are placed on the lower handrail, so that the hands and feet of the user can cooperate, making it more convenient to use. After the user has used it and eliminated the safety hazards, the heat-resistant telescopic rod contracts, driving the strong suction cup away from the wall, and then the fireproof rope is removed and wound around the outer side of the winding rod for convenient next use. When the soft ladder frame is inverted, the retractable pedal assembly can move between the two soft ladder frames by relying on gravity, which is convenient for storage and carrying.

[0004] The device has the following limitations in the actual use process:

[0005] 1. When escaping from a fire, it is already an emergency situation. At this time, if a soft ladder is still needed to be erected at the fire rescue window, it undoubtedly wastes precious escape time. Moreover, in an emergency, users are in a tense state of mind, and it is easy to have a situation where the soft ladder is not erected stably or correctly, resulting in it being unusable. If the soft ladder is installed at the fire rescue window on a regular basis, it is not convenient to fold and store this soft ladder, and keeping it in a stretched state will also affect the downstairs residents. Therefore, its practicality is greatly reduced;

[0006] 2. When a big fire breaks out, the escapees escape through the fire rescue window. During the process of descending through the soft ladder, it is very likely that the fire will spread out from the fire rescue window. At this time, the big fire is likely to damage the soft ladder, affecting the escape, and in serious cases, it may cause the escapees to fall from the soft ladder. Summary of the Invention

[0007] The purpose of the present invention is to provide a fire - proof escape multi - functional folding ladder device for fire rescue. This device is installed at the fire rescue window on a regular basis, and can be folded and stored, without affecting the downstairs residents, and can achieve rapid escape in an emergency. At the same time, fire - proof cloths are arranged on both sides of the pre - fabricated folding ladder to prevent the fire from spreading and affecting the escape during the escape process.

[0008] The technical solution adopted by the present invention is a fire - proof escape multi - functional folding ladder device for fire rescue, including a pre - fabricated folding ladder and a fire - proof component. The fire - proof component includes a protective shell, a fire - proof cloth roller, and a retracting and extending driving mechanism. There are two fire - proof cloth rollers, which are respectively rotatably installed at both ends inside the protective shell. Fire - proof cloths are wound around the fire - proof cloth rollers. The protective shell is fixedly connected to the top end of the pre - fabricated folding ladder. The retracting and extending driving mechanism is installed in the protective shell and is used to drive the fire - proof cloth roller to rotate so as to realize the retracting and extending of the fire - proof cloth.

[0009] Further, the retracting and extending driving mechanism includes a handle rotating shaft and a longitudinal rotating shaft. The handle rotating shaft is rotatably installed on the protective shell, the longitudinal rotating shaft is rotatably installed in the protective shell. A transverse rotating shaft is connected to the end of the fire - proof cloth roller. The handle rotating shaft and the longitudinal rotating shaft are connected by a special bevel gear, and the longitudinal rotating shaft and the transverse rotating shaft are connected by a special bevel gear.

[0010] Further, the pre - fabricated folding ladder includes two groups of telescopic sleeves and a number of pedals. Each group of telescopic sleeves is sleeved by a number of sleeves one by one. A locking ring is fixedly installed at the socket joint of the sleeves. The pedals are connected between two opposite locking rings at the same horizontal plane.

[0011] Further, an anti - slip fluorescent strip is embedded at the front end of the pedal.

[0012] Further, a support base is installed at the bottom end of the sleeve at the bottom.

[0013] Furthermore, a hole is opened in the middle of the pedal, and a wire rope drum is rotatably installed in the protective shell. A wire rope is wound on the wire rope drum, and the wire rope passes through the hole from top to bottom. The wire rope is bound to the hole at the bottom, and the wire rope drum is connected to the longitudinal rotating shaft through a special bevel gear transmission.

[0014] Furthermore, a latch is mounted on the handle shaft, and the latch can be inserted into the protective shell.

[0015] Furthermore, the protective shell is fixedly connected to the building structure through special embedded parts and expansion bolts.

[0016] The beneficial effects of the present invention are:

[0017] The utility model solves the problem of outdoor fire evacuation through building window openings in multi-story buildings, and provides an escape route through fire rescue windows and fire escape folding ladder devices. Indoor personnel can independently evacuate through the fire escape folding ladder, rather than passively waiting for firefighters to rescue them, reducing casualties and buying valuable time for fire rescue. The device is a prefabricated assembly component with high on-site installation efficiency, low construction cost, and durability. The folding ladder and fireproof cloth device are integrated into a design that is beautiful and elegant, has a long service life, and flexible component replacement, which can reduce subsequent maintenance costs. At the same time, the device is normally installed at the fire rescue window and can be folded and stored, which will not affect the residents downstairs and can achieve rapid escape in an emergency. At the same time, fireproof cloth is provided on both sides of the prefabricated folding ladder to prevent the spread of fire during the escape process and affect the escape, making it safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model in an expanded state;

[0019] Figure 2 This is a schematic diagram of the overall structure of the utility model in the storage state;

[0020] Figure 3 This is a schematic diagram of the installation structure of the wire rope drum of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the retractable and extendable drive mechanism of the utility model;

[0022] Markings in the figure: 2. Pedal, 3. Anti-slip fluorescent strip, 4. Wire rope, 5. Locking ring, 6. Support base, 7. Fireproof cloth, 8. Hole, 9. Protective shell, 10. Handle shaft, 11. Latch, 12. Longitudinal shaft, 13. Horizontal shaft, 14. Fireproof cloth drum, 15. Special bevel gear, 16. Special embedded parts, 17. Expansion bolt, 18. Casing, 19. Fire rescue window; 20. Wire rope drum. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer and more understandable, the technical solution of the present invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention.

[0024] Reference Figures 1 to 4 The utility model describes a multifunctional folding ladder device for fire escape and rescue, comprising a prefabricated folding ladder and a fireproof component. The fireproof component comprises a protective shell 9, a fireproof cloth drum 14 and a retraction and extension drive mechanism. There are two fireproof cloth drums 14, which are rotatably installed at both ends of the protective shell 9. Fireproof cloth 7 is wrapped around the fireproof cloth drum 14. The protective shell 9 is fixedly connected to the top of the prefabricated folding ladder. The retraction and extension drive mechanism is installed in the protective shell 9 and is used to drive the fireproof cloth drum 14 to rotate, thereby realizing the retraction and extension of the fireproof cloth 7.

[0025] The protective shell 9 is fixedly connected to the building structure through special embedded parts 16 and expansion bolts 17, so the device can be normally fixed at the fire rescue window 19. When encountering a fire and making an emergency escape, the escapee can lower the prefabricated folding ladder at the fire rescue window 19 and at the same time operate the retractable drive mechanism to lower the fireproof cloth 7 for emergency escape.

[0026] Preferably, the fireproof cloth 7 is made of carbon fiber fireproof cloth, 10mm thick and 300mm wide. The outside of the fireproof cloth 7 is aluminum foil, which has the function of mobile weakening and heat dissipation. The inside of the fireproof cloth 7 is fireproof cotton, which has a maximum temperature resistance of 300°C. In this way, the fireproof cloth 7 can effectively play a role in fire prevention and heat insulation.

[0027] Preferably, the outer side of the fireproof cloth drum 14 is wrapped with an aluminum alloy shell, and an inner groove is left at the bottom to play a protective and decorative role.

[0028] The retraction and extension drive mechanism includes a handle shaft 10 and a longitudinal shaft 12. The handle shaft 10 is rotatably installed on the protective shell 9, and the longitudinal shaft 12 is rotatably installed in the protective shell 9. The end of the fireproof cloth drum 14 is connected to a transverse shaft 13. The handle shaft 10 and the longitudinal shaft 12 are connected by a special bevel gear 15, and the longitudinal shaft 12 and the transverse shaft 13 are connected by a special bevel gear 15.

[0029] When the user rotates the handle shaft 10, the longitudinal shaft 12 can be driven to rotate through the dedicated bevel gear 15, and then the transverse shaft 13 can be driven through the dedicated bevel gear 15 to rotate the fireproof cloth drum 14 and release the fireproof cloth 7.

[0030] A latch 11 is mounted on the handle shaft 10, and the latch 11 can be inserted into the protective shell 9. When not in use, the latch 11 can be inserted into the protective shell 9 to prevent the handle shaft 10 from rotating by mistake.

[0031] The prefabricated folding ladder includes two sets of telescopic sleeves and several pedals 2. Each set of telescopic sleeves is composed of several sleeves 18 connected one by one. The sleeves 18 are made of 3-thick aluminum alloy round tubes. The diameter of the round tube decreases from Φ60 to Φ30 from top to bottom. A locking ring 5 is fixedly installed at the joint of the sleeve 18. The locking ring 5 can be reinforced to prevent the sleeve 18 from slipping and deformation. The pedal 2 is connected between two relative locking rings 5 on the same horizontal plane. The pedal 2 is made of aluminum alloy square tube and the width of the pedal 2 is 50-80mm.

[0032] The front end of the pedal 2 is embedded with an anti-slip fluorescent strip 3. Preferably, the width of the anti-slip fluorescent strip 3 is 25-35 mm. The anti-slip fluorescent strip 3 can provide warnings and lighting in dim and poorly lit environments to prevent evacuees from stepping on empty space and endangering their lives.

[0033] The bottom end of the sleeve 18 at the bottom is equipped with a support base 6, which is a 3-meter thick aluminum alloy arc-shaped round tube with a diameter of Φ25. It serves as the fixed end of the bottom of the prefabricated folding ladder and can lean stably against the outer wall.

[0034] A hole 8 is opened in the middle of the pedal 2, and a wire rope drum 20 is rotatably installed in the protective shell 9. A wire rope 4 is wound on the wire rope drum 20, and the wire rope 4 passes through the hole 8 from top to bottom. The wire rope 4 is bound to the hole 8 at the bottom. The wire rope drum 20 is connected to the longitudinal rotating shaft 12 through a special bevel gear 15.

[0035] When the user turns the handle shaft 10 to rotate the longitudinal shaft 12, the wire rope drum 20 can be driven to rotate synchronously, thereby releasing or retracting the wire rope 4. Since the wire rope 4 is bound to the hole 8 at the bottom, when the wire rope 4 is retracted, the prefabricated folding ladder can be folded and stored. Correspondingly, when the wire rope 4 is released, the prefabricated folding ladder can be unfolded under the action of gravity, making it easier for the user to escape.

[0036] Since the longitudinal shaft 12 is simultaneously connected to the transverse shaft 13 and the wire rope drum 20, when the user rotates the handle shaft 10, the prefabricated folding ladder and the fireproof cloth 7 can be simultaneously driven to be lowered or retracted, saving time and facilitating quick escape.

[0037] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A multifunctional folding ladder device for fire rescue and fire escape, characterized in that, It includes a prefabricated folding ladder and a fireproof component. The fireproof component includes a protective shell, a fireproof cloth roller, and a winding and unwinding drive mechanism. There are two fireproof cloth rollers, which are respectively rotatably installed at both ends inside the protective shell. A fireproof cloth is wound around the fireproof cloth roller. The protective shell is fixedly connected to the top end of the prefabricated folding ladder. The winding and unwinding drive mechanism is installed in the protective shell and is used to drive the fireproof cloth roller to rotate so as to realize the winding and unwinding of the fireproof cloth.

2. The fire-fighting and rescue fire-proof escape multi-functional folding ladder device according to claim 1, characterized in that, The winding and unwinding drive mechanism includes a handle rotating shaft and a longitudinal rotating shaft. The handle rotating shaft is rotatably installed on the protective shell. The longitudinal rotating shaft is rotatably installed in the protective shell. A transverse rotating shaft is connected to the end of the fireproof cloth roller. The handle rotating shaft and the longitudinal rotating shaft are connected by a special bevel gear transmission. The longitudinal rotating shaft and the transverse rotating shaft are connected by a special bevel gear transmission.

3. The fire-fighting and rescue fireproof escape multi-functional folding ladder device according to claim 2, characterized in that, The prefabricated folding ladder includes two groups of telescopic sleeves and a number of pedals. Each group of telescopic sleeves is sleeved by a number of sleeves. A locking ring is fixedly installed at the socket joint of the sleeves. The pedals are connected between two opposite locking rings at the same horizontal plane.

4. The fire-fighting and rescue fire-proof escape multi-functional folding ladder device according to claim 3, characterized in that, An anti-slip fluorescent strip is embedded at the front end of the pedal.

5. The fire-fighting and rescue fireproof escape multi-functional folding ladder device according to claim 3, characterized in that, A support base is installed at the bottom end of the sleeve at the bottom.

6. The fire-fighting and rescue fire-proof escape multi-functional folding ladder device according to claim 3, characterized in that, A hole is opened in the middle of the pedal. A wire rope roller is rotatably installed in the protective shell. A wire rope is wound around the wire rope roller. The wire rope passes through the hole from top to bottom. The wire rope is bound to the hole at the bottom. The wire rope roller and the longitudinal rotating shaft are connected by a special bevel gear transmission.

7. The fire-fighting and rescue fireproof escape multi-functional folding ladder device according to claim 2, characterized in that, A latch is installed on the handle rotating shaft, and the latch can be inserted into the protective shell.

8. The fire-fighting and rescue fireproof escape multi-functional folding ladder device according to claim 1, characterized in that, The protective shell is fixedly connected to the building structure through special embedded parts and expansion bolts.

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