Folding emergency fire escape ladder for building

Abstract

This invention discloses a foldable emergency fire escape ladder for building construction, relating to the field of escape ladder technology. The foldable emergency fire escape ladder for building construction includes a supporting base shell, an emergency escape mechanism, and a rope ladder mechanism installed inside the supporting base shell. The emergency escape mechanism includes a square column and a guide rail groove. A protective cover is fixedly installed on the side of the square column surface. A braking triangular tooth is fixedly connected to the inner side of the protective cover. A step assembly is installed in the middle of the square column surface. The step assembly includes a disc connector and a connecting shaft. A step pedal is fixedly connected to the end of the connecting shaft away from the disc connector. A hexagonal block is fixedly connected to the middle of the outer circular surface of the connecting shaft. A torque spring is fixedly connected between the surface of the hexagonal block and the surface of the disc connector. A pull rod is hinged to the surface of the hexagonal block, achieving the purpose of folding. This allows for folding, reducing the overall volume of the escape ladder, facilitating storage and transportation, and making it lightweight and flexible.

Description

Technical Field

[0001] This invention relates to the field of escape ladder technology, specifically a folding emergency fire escape ladder for building construction. Background Technology

[0002] Fire escape ladders are ladders used for escaping fires. In modern fires, it's common for people to be trapped on balconies and unable to escape, with some even jumping to their deaths, posing significant safety hazards. Fire escape ladders are building facilities used for escape during emergencies such as fires, playing a crucial role in fire rescue. Before use, check that all parts of the escape ladder are intact and securely fix one end to a fixed point in the building, such as a window or balcony. Escapees should wear flat shoes, hold onto the escape ladder with both hands, step firmly with both feet, slowly slide down, maintain balance, and quickly evacuate the fire scene once on the ground.

[0003] Currently, most traditional emergency fire escape ladders use fixed foot pedals and cannot be folded. Fire escape ladders are large in size, increasing storage space, and are not convenient to transport and handle, making them inflexible in overall use. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention is implemented through the following technical solution: A folding emergency fire escape ladder for building construction includes: Supporting the base shell, and the rope ladder mechanism installed inside the supporting base shell; An emergency escape mechanism is used to enable people to quickly and safely evacuate from a building to the ground. The emergency escape mechanism is installed on the top of the supporting base shell. The emergency escape mechanism includes a square column and a guide rail groove. The bottom of the square column is fixedly installed on the side of the top of the supporting base. The guide rail groove is opened in the middle of the inside of the square column. A protective cover is fixedly installed on the side of the surface of the square column. A braking triangular tooth is fixedly connected to the inner side of the protective cover. A stepping component is installed in the middle of the surface of the square column. The foot pedal assembly includes a disc connector and a connecting shaft. The disc connector is fixedly installed at the center of the square column surface. One end of the connecting shaft is rotatably installed at the center of the disc connector. A foot pedal is fixedly connected to the end of the connecting shaft away from the disc connector. A hexagonal block is fixedly connected to the center of the outer circular surface of the connecting shaft. A torque spring is fixedly connected between the surface of the hexagonal block and the surface of the disc connector. A pull rod is hinged to the surface of the hexagonal block. By supporting the bottom of the base shell in contact with the ground, the base shell can support the entire emergency escape mechanism. Firefighters can turn the foot pedal at the bottom of the square column clockwise. With the pull rod hinged, the connecting shaft drives the foot pedal to rotate clockwise to adjust the angle, making the foot pedal horizontal. The two sets of torque springs at the top of the inner cavity of the protective cover are elastically deformed by torque force, thereby adjusting the foot pedal.

[0005] Preferably, the square pillars are installed vertically, and there are two square pillars, which are installed symmetrically along the foot pedal.

[0006] Preferably, the protective cover is installed vertically, and there are four protective covers, which are evenly distributed on the sides of the square column surface.

[0007] The connecting shaft drives the hexagonal block to rotate together, so that the corners of the hexagonal block contact the brake triangular teeth, which can support the hexagonal block and thus lock the connecting shaft, preventing it from rotating. This keeps the pedal in a horizontal position, making it easy for disaster victims to step on the pedal and evacuate from the fire scene of the building.

[0008] Preferably, the disc connectors are evenly distributed in the middle of the square column surface, and the hexagonal blocks are installed inside the protective cover. As the evacuation of the fire victims at the building site is completed, no one steps on the pedals, causing the pressure on the pedals to disappear. Under the elastic torque of the torque spring and in conjunction with the rotation of the connecting shaft, the pedals rotate counterclockwise to reset, making the pedals vertical. Furthermore, under the pull of the lever, all the pedals automatically fold up, reducing their size and facilitating the transportation of the fire escape ladder.

[0009] Preferably, the outer circular surface of the connecting shaft is rotatably mounted between the connecting shaft and the protective cover, the connecting shaft passes through the center of the torque spring, and the pull rod is installed vertically.

[0010] The end of the connecting shaft is rotated and supported by a disc connector, and the middle of the connecting shaft is supported by symmetrical protective covers on both sides of the connecting shaft. This makes the connecting shaft and the pedal more stable and less prone to bending. The connecting shaft and the protective cover are rotatably installed, so the connecting shaft is supported by the rotation of the protective cover, which makes the pedal rotation adjustment smooth and less prone to jamming.

[0011] Preferably, an extension mechanism is installed on the surface of the square column via a guide rail groove. The extension mechanism includes a spiral fastener and a connecting guide bar. The spiral fastener is threaded onto the top of the square column surface. The connecting guide bar is slidably installed inside the guide rail groove. A connecting clip is fixedly connected to the surface of the connecting guide bar on the side away from the square column. An arc-shaped block is fixedly connected between the top of the connecting clip surface and the top of the connecting guide bar surface. An anti-slip strip is fixedly connected to the arc-shaped convex surface of the arc-shaped block surface. The surface of the connecting clip... A bent tooth is fixedly connected to the side of the ladder. A rectangular step bar is fixedly connected to the end of the bent tooth away from the connecting strip. Loosen the spiral fastener and apply an outward pulling force to the connecting guide bar. The connecting guide bar can slide in the guide rail groove, causing the connecting guide bar to move the connecting strip outward. With the connection of the bent tooth, the rectangular step bar moves outward. Tighten the spiral fastener again to fix the connecting guide bar to the square column. This allows the fire escape ladder to be lengthened, making it easier to adapt to high-rise buildings and reducing limitations.

[0012] Preferably, the surface of the connecting guide strip is in contact with the inner wall of the guide rail groove, the anti-slip strip is evenly distributed on the arc-shaped convex surface of the arc block, and the anti-slip strip is made of rubber.

[0013] Once the evacuation is complete, loosen the spiral fasteners to allow the connecting guide strip to slide downwards within the guide rail groove. With the connection of the connecting clip, the rectangular step bar moves back to the position of the step pedal, and can then be tightened via the spiral fasteners. This folds the fire escape ladder together, further reducing its overall size.

[0014] Preferably, the bending teeth are evenly distributed on the sides of the connecting strip surface, and the rectangular step strip is installed horizontally.

[0015] Preferably, the rope ladder mechanism includes a servo motor and a rotating shaft. The servo motor is fixedly installed on the side of the support base surface. Both ends of the rotating shaft are rotatably installed on the inner wall of the support base, and the rotating shaft and the servo motor are installed at the same height. One end of the rotating shaft passes through the inner wall of the support base and extends to its outside. The end of the rotating shaft extending to the outside of the support base is fixedly installed to the output end of the servo motor via a coupling. A soft rope is fixedly connected to the outer circular surface of the rotating shaft, and a stepping rod is fixedly connected to the surface of the soft rope. When encountering a higher floor, the connecting guide bar drives the connecting clip to extend outward and lengthen. The rope passes through the inside of the arc-shaped block and fixes the arc-shaped block, so that the top of the connecting guide bar is fixed. It is suspended by a square column, and the output end of the servo motor is turned on to reverse. The output end of the servo motor drives the rotating shaft to rotate together, so that the soft rope wound on the outer circular surface of the rotating shaft can be lowered, so that the stepping rods evenly distributed on the surface of the soft rope can be unfolded, further lengthening the escape ladder. The fixed ladder and the rope ladder are combined into one unit.

[0016] Preferably, the central axis of the rotating shaft coincides with the central axis of the supporting base shell. The stepping rods are evenly distributed on the surface of the soft rope. After the disaster victims have evacuated, the rotating shaft can be driven to rotate forward again by the output of the servo motor, so that the soft rope can be wound up and the soft rope and stepping rods can be collected and hidden inside the supporting base shell.

[0017] This invention provides a foldable emergency fire escape ladder for building construction. It has the following advantages: 1. The building uses a folding emergency fire escape ladder. By turning the foot pedal at the bottom of the square column clockwise, and with the hinged installation of the pull rod, the connecting shaft drives the foot pedal to rotate clockwise to adjust the angle, so that the foot pedal is in a horizontal position. The two sets of torque springs at the top of the inner cavity of the protective cover are subjected to torque force and elastically deform, thereby adjusting the foot pedal.

[0018] Second, the building uses a folding emergency fire escape ladder. The connecting shaft drives the hexagonal block to rotate together, so that the corner of the hexagonal block contacts the braking triangular tooth, which can support the hexagonal block. This locks the connecting shaft and prevents it from rotating, keeping the step plate in a horizontal position, making it easy for disaster victims to step on the step plate and evacuate from the fire scene of the building.

[0019] 3. The building uses a folding emergency fire escape ladder. When the pressure on the step pedals disappears, and under the elastic torque of the torque spring, combined with the rotation of the connecting shaft, the step pedals rotate counterclockwise to reset, so that the step pedals are in a vertical position. Under the pull of the lever, all the step pedals are automatically folded up, reducing the size of the ladder and making it easier to transport.

[0020] Fourth, the building uses a folding emergency fire escape ladder. The protective covers on both sides of the connecting shaft support the middle of the connecting shaft, making the connecting shaft and the step pedal more stable and less prone to bending. The connecting shaft and the protective cover are rotatably installed, so the connecting shaft is supported by the rotation of the protective cover, which makes the step pedal rotate and adjust smoothly and less prone to jamming.

[0021] 5. The building uses a folding emergency fire escape ladder. The connecting guide bar is pulled outward, and the connecting guide bar can slide in the guide rail groove. This causes the connecting guide bar to move the connecting clip outward. Under the connection of the bent teeth, the rectangular step bar moves outward, which can lengthen the fire escape ladder, making it easier to adapt to high-rise buildings and reducing limitations.

[0022] VI. The building uses a folding emergency fire escape ladder. The connecting guide bar slides down in the guide rail groove, and with the connection of the connecting clip, the rectangular step bar moves back to the position of the step plate. It can then be tightened by the spiral fastener, thereby folding the fire escape ladder together and further reducing the overall size of the escape ladder.

[0023] 7. The building uses a folding emergency fire escape ladder. A rope passes through the inside of the arc-shaped block and fixes the arc-shaped block, thus fixing the top of the connecting guide bar. It is suspended by a square column, and the output of the servo motor drives the rotating shaft to rotate together. This allows the soft rope wound on the outer surface of the rotating shaft to be lowered, causing the foot pedals evenly distributed on the surface of the soft rope to unfold, further lengthening the escape ladder. This combines the fixed ladder and the soft ladder into one integrated system.

[0024] 8. The building uses a folding emergency fire escape ladder. By using the forward rotation of the servo motor output end, the rotating shaft can be driven to rotate in the same direction, which can wind the soft rope and collect the soft rope and step rod inside the supporting shell for concealment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the foldable emergency fire escape ladder for building construction according to the present invention; Figure 2 This is a schematic diagram of the upward-view structure of the folding emergency fire escape ladder for building construction according to the present invention; Figure 3 This is a schematic diagram of the connection structure between the emergency escape mechanism and the supporting base shell of the present invention; Figure 4 This is a schematic diagram of the internal structure of the protective cover of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the connection structure between the extended mechanism and the square column of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the extended mechanism and the square column of the present invention; Figure 8 This is a bottom view of the connection structure between the rope ladder mechanism and the supporting base shell of the present invention.

[0026] In the diagram: 1. Support base; 2. Emergency escape mechanism; 3. Extension mechanism; 4. Rope ladder mechanism; 21. Square column; 22. Guide rail groove; 23. Protective cover; 24. Braking triangular tooth; 25. Foot pedal assembly; 251. Disc connector; 252. Connecting shaft; 253. Foot pedal; 254. Hexagonal block; 255. Torque spring; 256. Pull rod; 31. Spiral fastener; 32. Connecting guide bar; 33. Connecting clip; 34. Arc block; 35. Anti-slip strip; 36. Bending tooth; 37. Rectangular foot bar; 41. Servo motor; 42. Rotating shaft; 43. Rope; 44. Foot pedal rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] For the first embodiment, please refer to... Figure 1-5 The present invention provides a technical solution: A folding emergency fire escape ladder for building construction includes: Supporting the bottom shell 1, and the rope ladder mechanism 4 installed inside the supporting bottom shell 1; Emergency escape mechanism 2 is used to quickly and safely evacuate people from the building to the ground. Emergency escape mechanism 2 is installed on the top of the supporting base shell 1. The emergency escape mechanism 2 includes a square column 21 and a guide rail 22. The bottom end of the square column 21 is fixedly installed on the side of the top of the supporting base shell 1. The guide rail 22 is opened in the middle of the inside of the square column 21. A protective cover 23 is fixedly installed on the side of the surface of the square column 21. A braking triangular tooth 24 is fixedly connected to the inner side of the protective cover 23. A stepping component 25 is installed in the middle of the surface of the square column 21. The protective cover 23 is installed vertically. There are four protective covers 23, and the four protective covers 23 are evenly distributed on the sides of the surface of the square column 21.

[0029] The pedal assembly 25 includes a disc connector 251 and a connecting shaft 252. The disc connector 251 is fixedly mounted at the center of the surface of the square column 21. One end of the connecting shaft 252 is rotatably mounted at the center of the disc connector 251. A pedal 253 is fixedly connected to the end of the connecting shaft 252 away from the disc connector 251. A hexagonal block 254 is fixedly connected to the center of the outer circumference of the connecting shaft 252. A torque spring 255 is fixedly connected between the surface of the hexagonal block 254 and the surface of the disc connector 251. The surface of the hexagonal block 254 is hinged. Equipped with a pull rod 256, the bottom of the supporting base 1 contacts the ground, allowing the supporting base 1 to support the entire emergency escape mechanism 2. Firefighters can turn the foot pedal 253, located at the bottom of the square column 21, clockwise. With the hinged installation of the pull rod 256, the connecting shaft 252 drives the foot pedal 253 to rotate clockwise to adjust the angle, making the foot pedal 253 a horizontal device. The two sets of torque springs 255 at the top of the inner cavity of the protective cover 23 are subjected to torque force and undergo elastic deformation, thereby adjusting the foot pedal 253.

[0030] Two square columns 21 are installed vertically and symmetrically along the foot pedal 253. The connecting shaft 252 drives the hexagonal block 254 to rotate together, so that the corner of the hexagonal block 254 contacts the brake triangular tooth 24, which supports the hexagonal block 254. This locks the connecting shaft 252 and prevents it from rotating, keeping the foot pedal 253 in a horizontal position. This makes it easy for disaster victims to step on the foot pedal 253 and evacuate from the fire scene of the building.

[0031] The disc connectors 251 are evenly distributed in the middle of the surface of the square column 21, and the hexagonal blocks 254 are installed inside the protective cover 23.

[0032] As the evacuation of people from the building fire site is completed, no one steps on the pedal 253, causing the pressure on the pedal 253 to disappear. Under the elastic torque force of the torque spring 255 and in conjunction with the rotation of the connecting shaft 252, the pedal 253 rotates counterclockwise to reset, thus making the pedal 253 stand in a vertical position. Under the pull of the lever 256, all the pedals 253 automatically fold up.

[0033] The outer circular surface of the connecting shaft 252 is rotatably mounted between it and the protective cover 23. The connecting shaft 252 passes through the center of the torque spring 255. The pull rod 256 is vertically mounted. The end of the connecting shaft 252 is rotatably supported by the disc connector 251. The protective covers 23 on both sides of the connecting shaft 252 support the middle of the connecting shaft 252, making the connecting shaft 252 and the pedal 253 more stable and less prone to bending. The rotatable mounting between the connecting shaft 252 and the protective cover 23 allows the connecting shaft 252 to be rotatably supported by the protective cover 23, thus making the pedal 253 rotate smoothly and less prone to jamming.

[0034] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 1 to 7 As shown: An extension mechanism 3 is installed on the surface of the square column 21 via a guide rail groove 22. The extension mechanism 3 includes a spiral fastener 31 and a connecting guide bar 32. The spiral fastener 31 is threaded onto the top of the surface of the square column 21. The connecting guide bar 32 is slidably installed inside the guide rail groove 22. A connecting clip 33 is fixedly connected to the surface of the connecting guide bar 32 on the side away from the square column 21. An arc-shaped block 34 is fixedly connected between the top of the surface of the connecting clip 33 and the top of the surface of the connecting guide bar 32. An anti-slip strip 35 is fixedly connected to the arc-shaped convex surface of the arc-shaped block 34. A bent tooth 36 is fixedly connected to the side of the surface of the 33. A rectangular step bar 37 is fixedly connected to the end of the bent tooth 36 away from the connecting strip 33. Loosen the spiral fastener 31 and apply an outward pulling force to the connecting guide bar 32. The connecting guide bar 32 can slide in the guide rail groove 22, so that the connecting guide bar 32 drives the connecting strip 33 to move outward. Under the connection of the bent tooth 36, the rectangular step bar 37 moves outward. Tighten the spiral fastener 31 again to fix the connecting guide bar 32 to the square column 21 and extend the fire escape ladder.

[0035] The surface of the connecting guide bar 32 is in contact with the inner wall of the guide rail groove 22. The anti-slip strips 35 are evenly distributed on the arc-shaped convex surface of the arc block 34. The anti-slip strips 35 are made of rubber. When the personnel have evacuated, the spiral fastener 31 is loosened, so that the connecting guide bar 32 slides down in the guide rail groove 22. With the connection of the connecting clip 33, the rectangular step bar 37 moves back to the position of the step pedal 253. It can then be tightened by the spiral fastener 31 to fold the fire escape ladder together.

[0036] The bent teeth 36 are evenly distributed on the sides of the surface of the connecting strip 33, and the rectangular foot strip 37 is installed horizontally.

[0037] The third embodiment is based on the first and second embodiments; please refer to [link / reference]. Figures 1 to 8 As shown: The rope ladder mechanism 4 includes a servo motor 41 and a rotating shaft 42. The servo motor 41 is fixedly installed on the side of the surface of the supporting base shell 1. Both ends of the rotating shaft 42 are rotatably installed on the inner wall of the supporting base shell 1, and the rotating shaft 42 and the servo motor 41 are installed at the same height. One end of the rotating shaft 42 passes through the inner wall of the supporting base shell 1 and extends to its outside. The end of the rotating shaft 42 extending to the outside of the supporting base shell 1 is fixedly installed to the output end of the servo motor 41 through a coupling. A soft rope 43 is fixedly connected to the outer circular surface of the rotating shaft 42, and a stepping rod 44 is fixedly connected to the surface of the soft rope 43. When encountering... For higher floors, the connecting guide bar 32 drives the connecting clip bar 33 to extend outward, and a rope passes through the inside of the arc-shaped block 34 to fix the arc-shaped block 34, thus fixing the top of the connecting guide bar 32. It is then suspended by the square column 21, and the output end of the servo motor 41 is turned in reverse. The output end of the servo motor 41 drives the rotating shaft 42 to rotate together, which allows the soft rope 43 wound on the outer surface of the rotating shaft 42 to be lowered. This causes the stepping rods 44, which are evenly distributed on the surface of the soft rope 43, to unfold, further lengthening the escape ladder and combining the fixed ladder and the soft ladder together.

[0038] The central axis of the rotating shaft 42 coincides with the central axis of the supporting base shell 1. The stepping rods 44 are evenly distributed on the surface of the soft rope 43. After the disaster victims have evacuated, the servo motor 41 is turned on again. The forward rotation of the output end of the servo motor 41 can drive the rotating shaft 42 to rotate forward as well, so that the soft rope 43 can be wound up, thereby collecting the soft rope 43 and the stepping rods 44 inside the supporting base shell 1 for concealment.

[0039] When in use, with the initial state appropriate, the connecting guide bar 32 is installed inside the guide rail groove 22, and the fire escape ladder is in a folded state, small in size, and convenient for transportation; When a fire breaks out in a building, the fire escape ladder is moved to the designated location at the fire scene. The spiral fastener 31 is loosened, and an outward pulling force is applied to the connecting guide bar 32. The connecting guide bar 32 can slide in the guide rail groove 22, causing the connecting guide bar 32 to drive the connecting clip bar 33 to move outward. Under the connection of the bent teeth 36, the rectangular step bar 37 moves outward. The spiral fastener 31 is tightened again to fix the connecting guide bar 32 to the square column 21, thus lengthening the fire escape ladder. By having the bottom of the supporting base 1 in contact with the ground, the supporting base 1 can support the entire emergency escape mechanism 2, and the top of the escape ladder can be placed against the wall, so that the anti-slip strip 35 is in close contact with the wall, thus playing an anti-slip role. People at the fire scene move down from the top of the connecting guide strip 32, stepping on the rectangular step strip 37, and moving down the rectangular step strip 37 one by one. When the people in the fire are about to reach the top of the square column 21, the firefighters will turn the step 253 at the bottom of the square column 21 clockwise. With the hinged installation of the pull rod 256, the connecting shaft 252 drives the step 253 to rotate clockwise to adjust the angle, so that the step 253 is in a horizontal position. The two sets of torque springs 255 at the top of the inner cavity of the protective cover 23 are subjected to torque force and elastically deform, thereby adjusting the step 253. Furthermore, the end of the connecting shaft 252 is rotatably supported by the disc connector 251, and the middle part of the connecting shaft 252 is supported by the symmetrical protective covers 23 on both sides of the connecting shaft 252, making the connecting shaft 252 and the pedal 253 more stable and less prone to bending. The connecting shaft 252 and the protective cover 23 are rotatably installed, so that the connecting shaft 252 is supported by the rotation of the protective cover 23, thereby making the pedal 253 rotate and adjust smoothly and less prone to jamming. Furthermore, the connecting shaft 252 drives the hexagonal block 254 to rotate together, so that the corner of the hexagonal block 254 contacts the brake triangular tooth 24, which can support the hexagonal block 254, thereby locking the connecting shaft 252 and preventing it from rotating. This keeps the pedal 253 in a horizontal state, making it easier for disaster victims to step on the pedal 253 and evacuate from the fire scene of the building. Furthermore, when encountering higher floors, the connecting guide bar 32 is used to drive the connecting clip bar 33 to extend outward and lengthen. A rope passes through the inside of the arc-shaped block 34 and fixes the arc-shaped block 34, so that the top of the connecting guide bar 32 is fixed. It is suspended by the square column 21, and the output end of the servo motor 41 is turned on to reverse. The output end of the servo motor 41 drives the rotating shaft 42 to rotate together, so that the soft rope 43 wound on the outer circle of the rotating shaft 42 can be lowered, so that the stepping rods 44 evenly distributed on the surface of the soft rope 43 can be unfolded, further lengthening the escape ladder and combining the fixed ladder and the soft ladder together. As the evacuation of people from the fire scene is completed, no one steps on the pedal 253, causing the pressure on the pedal 253 to disappear. Under the elastic torque force of the torque spring 255 and in conjunction with the rotation of the connecting shaft 252, the pedal 253 rotates counterclockwise to reset, thus making the pedal 253 stand in a vertical position. Under the pull of the pull rod 256, all the pedals 253 automatically fold up. The servo motor 41 is turned on again. The forward rotation of the output end of the servo motor 41 can drive the rotating shaft 42 to rotate in the same direction, which can wind the soft rope 43 and collect the soft rope 43 and the pedal rod 44 inside the support base shell 1 for concealment. Loosen the spiral fastener 31 so that the connecting guide bar 32 slides downward in the guide rail groove 22, and with the connection of the connecting clip bar 33, the rectangular step bar 37 moves back to the position of the step plate 253, and can then be tightened by the spiral fastener 31 to fold the fire escape ladder together.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] 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 folding emergency fire escape ladder for building construction, characterized in that, include: Supporting bottom shell (1), and a rope ladder mechanism (4) installed inside the supporting bottom shell (1). Emergency escape mechanism (2), which is used to quickly and safely evacuate people from the building to the ground, and is installed on the top of the supporting base shell (1); The emergency escape mechanism (2) includes a square column (21) and a guide rail groove (22). The bottom end of the square column (21) is fixedly installed on the side of the top of the supporting base shell (1). The guide rail groove (22) is opened in the middle of the inside of the square column (21). A protective cover (23) is fixedly installed on the side of the surface of the square column (21). A brake triangular tooth (24) is fixedly connected to the inner side of the protective cover (23). A stepping component (25) is installed in the middle of the surface of the square column (21). The pedal assembly (25) includes a disc connector (251) and a connecting shaft (252). The disc connector (251) is fixedly installed at the middle of the surface of the square column (21). One end of the connecting shaft (252) is rotatably installed at the center of the disc connector (251). A pedal (253) is fixedly connected to the end of the connecting shaft (252) away from the disc connector (251). A hexagonal block (254) is fixedly connected at the middle of the outer circular surface of the connecting shaft (252). A torque spring (255) is fixedly connected between the surface of the hexagonal block (254) and the surface of the disc connector (251). A pull rod (256) is hingedly installed on the surface of the hexagonal block (254).

2. The folding emergency fire escape ladder for building construction according to claim 1, characterized in that: The square column (21) is installed vertically. There are two square columns (21), and the two square columns (21) are installed symmetrically along the foot pedal (253).

3. A folding emergency fire escape ladder for building construction according to claim 1, characterized in that: The protective cover (23) is installed vertically. There are four protective covers (23), and the four protective covers (23) are evenly distributed on the side of the surface of the square column (21).

4. A folding emergency fire escape ladder for building construction according to claim 1, characterized in that: The disc connectors (251) are evenly distributed in the middle of the surface of the square column (21), and the hexagonal blocks (254) are installed inside the protective cover (23).

5. A folding emergency fire escape ladder for building construction according to claim 1, characterized in that: The outer circular surface of the connecting shaft (252) is rotatably mounted between the outer circular surface of the connecting shaft (252) and the protective cover (23). The connecting shaft (252) passes through the center of the torque spring (255), and the pull rod (256) is vertically mounted.

6. A folding emergency fire escape ladder for building construction according to claim 1, characterized in that: An extension mechanism (3) is installed on the surface of the square column (21) via a guide rail groove (22). The extension mechanism (3) includes a spiral fastener (31) and a connecting guide bar (32). The spiral fastener (31) is threaded onto the top of the surface of the square column (21). The connecting guide bar (32) is slidably installed inside the guide rail groove (22). A connecting clip (33) is fixedly connected to the surface of the connecting guide bar (32) on the side away from the square column (21). An arc-shaped block (34) is fixedly connected between the top of the surface of the connecting clip (33) and the top of the surface of the connecting guide bar (32). An anti-slip strip (35) is fixedly connected to the arc-shaped convex surface of the arc-shaped block (34). A bent tooth (36) is fixedly connected to the side of the surface of the connecting clip (33). A rectangular foot strip (37) is fixedly connected to the end of the bent tooth (36) away from the connecting clip (33).

7. A folding emergency fire escape ladder for building construction according to claim 6, characterized in that: The surface of the connecting guide strip (32) is in contact with the inner wall of the guide rail groove (22), the anti-slip strip (35) is evenly distributed on the arc-shaped convex surface of the arc block (34), and the material of the anti-slip strip (35) is rubber.

8. A folding emergency fire escape ladder for building construction according to claim 6, characterized in that: The bent teeth (36) are evenly distributed on the side of the surface of the connecting strip (33), and the rectangular step strip (37) is installed horizontally.

9. A folding emergency fire escape ladder for building construction according to claim 1, characterized in that: The rope ladder mechanism (4) includes a servo motor (41) and a rotating shaft (42). The servo motor (41) is fixedly installed on the side of the surface of the supporting base shell (1). The two ends of the surface of the rotating shaft (42) are rotatably installed with the inner wall of the supporting base shell (1). The rotating shaft (42) and the servo motor (41) are installed at the same height. One end of the rotating shaft (42) penetrates the inner wall of the supporting base shell (1) and extends to its outside. The end of the rotating shaft (42) extending to the outside of the supporting base shell (1) is fixedly installed with the output end of the servo motor (41) through a coupling. A soft rope (43) is fixedly connected to the outer circular surface of the rotating shaft (42). A foot pedal rod (44) is fixedly connected to the surface of the soft rope (43).

10. A folding emergency fire escape ladder for building construction according to claim 9, characterized in that: The central axis of the rotating shaft (42) coincides with the central axis of the supporting base shell (1), and the stepping rod (44) is evenly distributed on the surface of the soft rope (43).

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