Concealed reciprocating balcony escape device

Abstract

The application discloses a concealed reciprocating balcony escape device and relates to the technical field of escape fire-fighting products.The device comprises a mounting frame body, a cover plate hingedly connected to the upper side of the mounting frame body, a pulley assembly installed on the corresponding side wall of the mounting frame body, a lifting platform with a cross section matched with the inner cavity of the mounting frame body and capable of being placed in the mounting frame body, and a speed limiter installed in the mounting frame body and in transmission connection with the lifting platform through a lifting cable.The middle part of the lifting cable is wound around the pulley assembly, and under the limiting action of the speed limiter, the lifting platform can be uniformly lowered.The application does not need to be climbed and can be used without professional training, is convenient for escape and use of special groups, does not need to be provided with guide rails or stand columns, does not occupy the space below the escape device, and can ensure that the daily use of the space below the escape device is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of escape and fire-fighting equipment, and in particular to a concealed reciprocating balcony escape device. Background Art

[0002] Nowadays, residential buildings are becoming increasingly taller and overcrowded. When a fire breaks out, the main ways for people to escape are to evacuate safely or passively wait for rescue. During a fire, the corridors are often filled with thick smoke, or the fire is too severe to evacuate, making active evacuation impossible. This is especially difficult for the elderly and children, and people are often unable to leave the building safely and in a timely manner, resulting in tragedies. Passive waiting for rescue is limited by objective factors such as traffic jams, blocked fire lanes, and the time it takes for fire trucks to deploy. Passive waiting often causes the fire department to exceed the golden rescue time, resulting in large amounts of smoke entering the house. Many people who die in high-rise fires die from inhaling deadly toxic smoke. This shows that time is the most important factor in a fire.

[0003] The balcony evacuation ladder refers to a safety escape facility added to the balcony, which is mainly used in fire self-rescue scenarios. When a fire occurs indoors or in emergency situations such as being unable to evacuate through the safety exit due to thick smoke, people inside the house can open the balcony escape device to go to a relatively safe place on the next floor, making up for the defect of the single escape means of the original residential building. It is suitable for residential communities.

[0004] In the prior art, reciprocating escape devices for balcony escape all require installation of fixed guide rails or supporting columns. Summary of the Invention

[0005] In response to the technical problem that existing balcony evacuation ladders have poor stability after being deployed, the present invention provides a concealed reciprocating balcony escape device. Through the cooperation of a cable pulley mechanism and a speed limiter, the lifting platform can be lowered at a uniform speed. No guide rails or columns are required, and the space below the escape device is not occupied, ensuring that the daily use of the space below the escape device is not affected. The counterweight is connected to the lifting platform to achieve automatic resetting of the lifting platform, forming a reciprocating escape.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention provides a concealed reciprocating balcony escape device, comprising: an installation frame, a cover plate hingedly connected to the upper side of the installation frame; a pulley assembly, the pulley assembly being installed on the side wall corresponding to the installation frame; a lifting platform, the cross-section of the lifting platform being adapted to the inner cavity of the installation frame and being capable of being placed flat in the installation frame; a speed limiter, the speed limiter being installed in the installation frame, and the lifting platform being transmission-connected to the speed limiter via a lifting cable, the middle portion of the lifting cable being wound around the pulley assembly; a counterweight, the counterweight being locked in the installation frame via a limit switch, and the counterweight being transmission-connected to the lifting platform via the counterweight cable; wherein, under the limiting action of the speed limiter, the lifting platform can descend at a uniform speed, and when the lifting platform descends to a set height, the limit switch is driven to be unlocked, and the counterweight falls under the action of its own weight and is transmission-connected to the lifting platform.

[0008] The concealed reciprocating balcony escape device provided by the present invention includes an installation frame, a pulley assembly, a lifting platform, a speed limiter and a counterweight. The installation frame can be embedded in the floor, and a cover plate is hinged on the upper side of the installation frame to seal the internal cavity of the installation frame through the cover plate, so that the balcony escape device is integrated with the floor when not in use and does not affect the use of the balcony; the pulley assembly is installed on the corresponding side wall of the installation frame, the cross-section of the lifting platform is adapted to the inner cavity of the installation frame, and is placed flat in the installation frame when not in use, and the speed limiter is installed in the installation frame, and the lifting platform is connected to the speed limiter through a lifting cable, the middle part of the lifting cable is wound around the pulley assembly, the counterweight is locked in the installation frame through a limit switch, and the counterweight can be connected to the lifting platform through the counterweight cable.

[0009] Thus, the concealed reciprocating balcony escape device provided by the present invention can be embedded and installed on the balcony floor for concealment. When it is needed, the cover is opened and then moved to the lifting platform, which is connected to the speed limiter through the lifting cable. At this time, under the action of the gravity of the lifting platform and the user, the lifting platform is driven to move downward, and the speed limiter limits the downward movement of the lifting platform, so that the lifting platform descends at a uniform speed, thereby transferring the personnel to the next floor for escape. When the lifting platform descends to the set height (usually a height of less than 10 cm from the ground), the limit switch is unlocked. At this time, the counterweight falls under the action of its own weight and is connected to the lifting platform. After the personnel open the lifting platform, the gravity of the counterweight drives the lifting platform to move up and reset, realizing the automatic reset of the lifting platform, forming a reciprocating escape.

[0010] The movement of the counterweight and lifting platform is achieved via cables, eliminating the need for dedicated guide rails or support columns. This eliminates the need for dedicated rails or support columns, ensuring that the space below the escape device remains accessible for daily use. This system has a wide range of applications and minimal impact on building facades. Furthermore, the system eliminates the need for climbing or specialized training during the entire escape process, making it convenient for escape and particularly suitable for individuals with special needs.

[0011] Therefore, the concealed reciprocating balcony escape device provided by the present invention realizes the uniform descent of the lifting platform through the cooperation of the cable pulley mechanism and the speed limiter. It does not require the installation of guide rails or columns and does not occupy the space below the escape device, which can ensure that the daily use of the space below the escape device is not affected. The automatic resetting of the lifting platform is realized by the connection between the counterweight and the lifting platform, forming a reciprocating escape.

[0012] In an optional embodiment of the present application, the installation frame is adapted to be equipped with an electromagnetic lock, and the electromagnetic lock is used to lock the cover plate on the installation frame to prevent the cover plate from being opened by mistake.

[0013] In an optional embodiment of the present application, the electromagnetic lock is demagnetized and opened in the event of a fire, so that in the event of a fire, the cover plate can be unlocked immediately to shorten the escape time.

[0014] In an optional embodiment of the present application, the electromagnetic lock is connected to an opening alarm component, so that in the event of a fire, the alarm component can be used to remind and locate the person, so that people can quickly find the location of the escape device and escape.

[0015] In an optional embodiment of the present application, the pulley assembly includes four fixed pulleys, which are installed at the corners of the cavity of the installation frame that accommodates the lifting platform; four lifting cables are provided, and the middle parts of the four lifting cables are wound around the corresponding fixed pulleys, and one end of the four lifting cables is fixedly connected to the corresponding corners of the lifting platform to ensure the smooth descent of the lifting platform.

[0016] In an optional embodiment of the present application, the wheel body of the fixed pulley is a groove pulley to prevent the lifting cable from slipping off the fixed pulley during movement, thereby ensuring the safety of the lifting platform descending.

[0017] In an optional embodiment of the present application, it further includes a connecting main shaft, which is installed in the installation frame and can rotate along its own axis; a cable drum is fixedly connected to the connecting main shaft, and one end of the lifting cable is wound on the cable drum; wherein, the connecting main shaft is transmission-connected to the speed limiter to facilitate the transmission connection between the lifting platform and the speed limiter.

[0018] In an optional embodiment of the present application, two cable reels are provided, and the two cable reels are respectively arranged at both ends of the connecting main shaft, and the lifting cables located on the same side are wound on the corresponding cable reels to prevent the lifting cables from being entangled when reeling.

[0019] In an optional embodiment of the present application, a winding cable drum is provided in the middle of the connecting main shaft, and the winding cable drum is used to reel in the counterweight cable; the counterweight is adapted to be equipped with a spring cable reel, and the spring cable reel is used to reel in the counterweight cable; a trigger is provided in the middle of the counterweight cable, and the trigger is used to release the lock of the counterweight on the limit switch; wherein, during the descent of the lifting platform, the winding cable drum is driven to reel in the counterweight cable, and during the process of the counterweight being hoisted to the installation frame, the spring cable reel reels in the counterweight cable, so that during the downward movement of the lifting platform, the counterweight cable reeled by the spring cable reel can be wound on the winding cable drum, so that when the limit switch is unlocked, the counterweight is automatically connected to the lifting platform in a transmission manner, ensuring that the counterweight can drive the lifting platform to reset, and after the lifting platform is reset and locked, during the process of lifting the counterweight by a hand crane, the spring cable reel can automatically reel in the counterweight cable, so as to retract the counterweight and the counterweight cable into the installation frame.

[0020] In an optional embodiment of the present application, the limit switch includes: a limit lock tongue, which is laterally movable and penetrates the side wall of the mounting frame; a first connecting rod, the middle part of the first connecting rod is hinged to the side wall of the mounting frame, and the lower end of the first connecting rod is hinged to the end of the limit lock tongue away from the counterweight member; a second connecting rod, the middle part of the second connecting rod is hinged to the side wall of the mounting frame, the lower end is transmission-connected to the upper end of the first connecting rod, and a rope hole is provided at the upper end; wherein, the counterweight cable is penetrated in the rope hole, the outer dimension of the trigger member is larger than the inner diameter of the rope hole, and the trigger member is located on the side of the first connecting rod facing the counterweight member, so as to ensure that the lifting platform can drive the limit switch to unlock when it descends to the set height.

[0021] In an optional embodiment of the present application, the lifting platform is adapted to be equipped with a foot switch, and the foot switch is used to lock the lifting platform on the mounting frame so as to quickly release the lifting platform.

[0022] In an optional embodiment of the present application, the lifting platform is adapted to be equipped with a folding handrail so that personnel can hold on to the lifting platform during the descent process to ensure the safety of escape.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] When the lift is lowered to the set height, the limit switch is unlocked, and the lift can be driven up and down to reset by the gravity of the counterweight, thereby realizing automatic reset of the lift, thereby forming a reciprocating escape.

[0025] 2. The concealed reciprocating balcony escape device provided by the present invention drives the lifting platform downward under the action of the gravity of the lifting platform and the user, and cooperates with the speed limiter to limit the downward movement of the lifting platform, so that the lifting platform descends at a uniform speed, thereby transferring people to the next floor for escape. There is no need to climb or undergo professional training to use it, which is convenient for escape and is easy for special groups of people to use.

[0026] 3. The concealed reciprocating balcony escape device provided by the present invention realizes the movement of the counterweight and the lifting platform by means of cables, and does not require the provision of dedicated guide rails or supporting columns. It does not occupy the space below the escape device, thus ensuring that the daily use of the space below the escape device is not affected. It has a wide range of applications and has little impact on the building facade. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0028] In the attached figure:

[0029] Figure 1 This is a schematic diagram of the internal structure of a concealed reciprocating balcony escape device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic cross-sectional view of a concealed reciprocating balcony escape device according to an embodiment of the present invention;

[0031] Figure 3 This is a structural diagram of the concealed reciprocating balcony escape device adapted to a hand-cranked crane according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic structural diagram of a spring cable winder according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic structural diagram of a limit switch according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic structural diagram of the limit switch in the unlocked state according to an embodiment of the present invention;

[0035] Figure 7 This is a structural schematic diagram of the hidden reciprocating balcony escape device in use according to an embodiment of the present invention.

[0036] Markings and corresponding parts names in the accompanying drawings:

[0037] 1-cover, 2-installation frame, 3-lifting platform, 4-folding armrest, 5-foot switch, 6-fixed pulley, 7-lifting cable, 8-cable reel, 9-speed limiter, 10-connecting shaft, 11-connecting main shaft, 12-cable reel, 13-counterweight cable, 14-trigger, 15-lifting ring, 16-spring reel, 17-counterweight, 18-limit switch, 18a-limit lock tongue, 18b-first connecting rod, 18c-second connecting rod, 18d-cable hole, 18e-transfer rod, 19-counterweight accommodating chamber, 20-hand crane, 21-electromagnetic lock. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of the embodiments of the present application, the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0040] At the same time, the terms "disposed," "with," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] Example

[0042] Combine Figure 1 and Figure 2 The present embodiment provides a concealed reciprocating balcony escape device, comprising: an installation frame 2, a cover plate 1 being hingedly connected to the upper side of the installation frame 2; a pulley assembly, the pulley assembly being mounted on the corresponding side wall of the installation frame 2; a lifting platform 3, the cross section of which is adapted to the inner cavity of the installation frame 2 and can be placed flat in the installation frame 2; a speed limiter 9, the speed limiter 9 being mounted in the installation frame 2, and the lifting platform 3 being connected to the speed limiter 9 via a lifting cable 7. The middle part of the cable 7 is wound around the pulley assembly; the counterweight 17 is locked in the installation frame 2 through the limit switch 18, and the counterweight 17 can be connected to the lifting platform 3 through the counterweight cable 13; wherein, under the limiting action of the speed limiter 9, the lifting platform 3 can descend at a constant speed, and when the lifting platform 3 descends to the set height, the limit switch 18 is driven to unlock, and the counterweight 17 falls under the action of its own weight and is connected to the lifting platform 3.

[0043] Specifically, the installation frame 2 is adapted to be equipped with an electromagnetic lock 21 , and the electromagnetic lock 21 is used to lock the cover 1 on the installation frame 2 to prevent the cover 1 from being opened by mistake.

[0044] It is understandable that the electromagnetic lock 21 is demagnetized and opened in the event of a fire, so that the cover plate 1 can be unlocked immediately in the event of a fire, thereby shortening the escape time.

[0045] In this embodiment, the electromagnetic lock 21 is connected to an opening alarm component, so that in the event of a fire, the alarm component can be used to remind and locate the person, so that people can quickly find the location of the escape device and escape.

[0046] Specifically, the alarm module is connected to the building's weak current system. It includes a wireless communication module, such as a Bluetooth or WiFi connection module, for communicating with user devices. This allows the door to remain locked during normal operation but activate and automatically alarm in the event of a fire, effectively implementing fire alarm functionality and mitigating concerns about burglary protection and privacy.

[0047] As for the pulley assembly, in this embodiment, the pulley assembly includes four fixed pulleys 6, and the four fixed pulleys 6 are installed at the corners of the cavity of the installation frame 2 that accommodates the lifting platform 3; four lifting cables 7 are provided, and the middle parts of the four lifting cables 7 are wound around the corresponding fixed pulleys 6, and one end of the four lifting cables 7 is fixedly connected to the corresponding corners of the lifting platform 3 to ensure the smooth descent of the lifting platform 3.

[0048] It should be understood that the wheel body of the fixed pulley 6 is a grooved pulley to prevent the lifting cable 7 from slipping off the fixed pulley 6 when moving, thereby ensuring the safety of the lifting platform 3 when descending.

[0049] On this basis, this embodiment also includes a connecting main shaft 11, which is installed in the installation frame 2 and can rotate along its own axis; a cable drum 8 is fixedly connected to the connecting main shaft 11, and one end of the lifting cable 7 is wound on the cable drum 8; wherein, the connecting main shaft 11 is transmission-connected to the speed limiter 9 to facilitate the transmission connection between the lifting platform 3 and the speed limiter 9.

[0050] It can be understood that there are two cable reels 8, which are respectively arranged at the two ends of the connecting main shaft 11, and the lifting cables 7 located on the same side are wound on the corresponding cable reels 8 to prevent the lifting cables 7 from being entangled when reeling.

[0051] Generally speaking, the lifting platform 3 is adapted to be equipped with a foot switch 5, which is used to lock the lifting platform 3 on the mounting frame 2 so as to quickly release the lifting platform 3. The foot switch 5 is a common switch mechanism, and when the switch is stepped on, the lock tongue can slide out of the lock hole to release the restriction on the lifting platform 3.

[0052] At the same time, the lifting platform 3 is adapted to be equipped with a folding handrail 4 so that the personnel lifting platform 3 can hold the lifting platform 3 by hand during the descent process to ensure the safety of escape.

[0053] Recombination Figure 1 and Figure 2 The middle part of the connecting main shaft 11 is provided with a winding cable drum 12, and the winding cable drum 12 is used to reel in the counterweight cable 13; the counterweight member 17 is adapted to be equipped with a spring cable reel 16 ( Figure 4), the spring cable reel 16 is used to reel in the counterweight cable 13; a trigger 14 is provided in the middle of the counterweight cable 13, and the trigger 14 is used to release the lock of the counterweight 17 by the limit switch 18; wherein, during the descent of the lifting platform 3, the winding cable drum 12 is driven to reel in the counterweight cable 13, and during the process of the counterweight 17 being hoisted to the installation frame 2, the spring cable reel 16 reels in the counterweight cable 13, so that during the downward movement of the lifting platform 3, the counterweight cable 13 reeled by the spring cable reel 16 can be wound on the winding cable drum 12, so that when the limit switch 18 is unlocked, the counterweight 17 is connected to the lifting platform 3 in a transmission manner, ensuring that the counterweight 17 can drive the lifting platform 3 to reset, and after the lifting platform 3 is reset and locked, the hand crane 20 ( Figure 3 ) During the process of hanging the counterweight 17, the spring cable winder 16 can automatically reel in the counterweight cable 13 to retract the counterweight 17 and the counterweight cable 13 into the installation frame 2.

[0054] Combine Figure 5 and Figure 6 The limit switch 18 includes: a limit lock tongue 18a, which is laterally movably penetrated by the side wall of the mounting frame 2; a first connecting rod 18b, the middle part of the first connecting rod 18b is hinged to the side wall of the mounting frame 2, and the lower end of the first connecting rod 18b is hinged to the end of the limit lock tongue 18a away from the counterweight 17; a second connecting rod 18c, the middle part of the second connecting rod 18c is hinged to the side wall of the mounting frame 2, the lower end is transmission connected to the upper end of the first connecting rod 18b, and the upper end is provided with a rope hole 18d; wherein, the counterweight cable 13 is penetrated by the rope hole 18d, the outer dimension of the trigger member 14 is larger than the inner diameter of the rope hole 18d, and the trigger member 14 is located on the side of the first connecting rod 18b facing the counterweight 17, so as to ensure that the lifting platform 3 can drive the limit switch 18 to unlock when it descends to the set height.

[0055] Recombination Figure 6In this embodiment, the limit switch 18 further includes a transfer rod. The upper end of the first connecting rod 18b and the lower end of the second connecting rod 18c are both provided with elongated holes, and the two ends of the transfer rod are respectively inserted into the corresponding elongated holes. Both ends of the transfer rod are provided with limit portions to prevent the ends of the first connecting rod 18b and the second connecting rod 18c from slipping off the transfer rod and achieving transmission. When the lifting platform 3 descends to the set height, the trigger member 14 abuts against the second connecting rod 18c, causing the weight of the lifting platform 3 and the operator to drive the upper end of the second connecting rod 18c to rotate to the right and the lower end to rotate to the left. This in turn drives the upper end of the first connecting rod 18b to rotate to the left and the lower end to rotate to the right, thereby driving the limit lock tongue 18a to move to the right to unlock, allowing the counterweight 17 to move downward.

[0056] It should be noted that the speed limiter 9, which is used to control the descent speed of the lifting platform 3, can be a commonly used spring balancer or other speed limiting device. This is prior art and is not the technical solution claimed in this application. It does not affect the clarity and completeness of the technical solution of this application and is not described in detail in this application. Similarly, the spring cable reel 16, electromagnetic lock 21, and foot switch 5 are all existing conventional accessories and are not the technical solution claimed in this application. They do not affect the clarity and completeness of the technical solution of this application and are not described in detail in this application.

[0057] In summary, the concealed reciprocating balcony escape device provided in this embodiment includes an installation frame 2, a pulley assembly, a lifting platform 3, a speed limiter 9 and a counterweight 17. The installation frame 2 can be embedded in the floor slab, and a cover plate 1 is hingedly connected to the upper side of the installation frame 2 to cover the internal cavity of the installation frame 2 through the cover plate 1, so that the balcony escape device is integrated with the floor slab when not in use, without affecting the use of the balcony; the pulley assembly is installed on the corresponding side wall of the installation frame 2, the cross-section of the lifting platform 3 is adapted to the inner cavity of the installation frame 2, and is placed flat in the installation frame 2 when not in use, and the speed limiter 9 is installed in the installation frame 2, and the lifting platform 3 is connected to the speed limiter 9 through the lifting cable 7, the middle part of the lifting cable 7 is wound around the pulley assembly, the counterweight 17 is locked in the installation frame 2 through the limit switch 18, and the counterweight 17 can be connected to the lifting platform 3 through the counterweight cable 13. Therefore, the concealed reciprocating balcony escape device provided in this embodiment can be embedded and installed on the balcony floor to be hidden.

[0058] When the user needs to use the platform, the cover 1 is opened, and the user moves onto the lifting platform 3 and steps on the foot switch 5. The lifting platform 3 is connected to the speed limiter 9 via the lifting cable 7. At this time, under the action of the gravity of the lifting platform 3 and the user, the lifting platform 3 is driven downward, and the speed limiter 9 limits the downward movement of the lifting platform 3, causing the lifting platform 3 to descend at a uniform speed, thereby transferring the user to the next floor for escape. At the same time, as the lifting platform 3 moves downward, the counterweight cable 13 is wound from the spring cable reel 16 onto the winding cable drum 12, thereby driving the trigger member 14 to move toward the second connecting rod 18c. Thus, by synchronously limiting the downward movement of the lifting platform 3 by the speed limiter 9 and the spring cable reel 16, the stability of the downward movement of the lifting platform 3 can be further improved.

[0059] Combine Figure 6 and Figure 7 When the lifting platform 3 descends to the set height (usually a height less than 10 cm from the ground), the trigger member 14 contacts the second connecting rod 18c, thereby driving the upper end of the second connecting rod 18c to rotate to the right and the lower end to the left through the deadweight of the lifting platform 3 and the operator, so as to drive the upper end of the first connecting rod 18b to rotate to the left and the lower end to the right, thereby driving the limit lock tongue 18a to move to the right to unlock. At this time, the counterweight 17 falls under the action of its own weight and is connected to the lifting platform 3 by transmission. After the personnel opens the lifting platform 3, the gravity of the counterweight 17 drives the lifting platform 3 to move up and reset, realizing the automatic reset of the lifting platform 3 and forming a reciprocating escape.

[0060] The movement of the counterweight 17 and the lifting platform 3 is achieved by cables, eliminating the need for dedicated guide rails or support columns. This eliminates the need for dedicated space beneath the escape device, ensuring that the space below remains accessible for daily use. This system has a wide range of applications and minimal impact on building facades. Furthermore, the system eliminates the need for climbing or specialized training during the entire escape process, making it convenient for escape and particularly suitable for individuals with special needs.

[0061] After the disaster is over, the hand-cranked crane 20 can be installed on the mounting frame 2, and the cable inside it can be connected to the counterweight 17. The counterweight 17 can be hoisted into the mounting frame 2 by the hand-cranked cable drum 8, and the limit switch 18 can be reset to confine the counterweight 17 in the mounting frame 2. During the upward movement of the counterweight 17, the spring cable winder 16 automatically winds up the counterweight cable 13 to prevent the counterweight cable 13 from being entangled and to ensure that the cable drum 12 can synchronously wind up the counterweight cable 13 during the subsequent downward movement of the lifting platform 3.

[0062] In summary, the concealed reciprocating balcony escape device provided in this embodiment realizes the uniform descent of the lifting platform 3 through the cooperation of the cable pulley mechanism and the speed limiter 9. It does not require the installation of guide rails or columns, and does not occupy the space below the escape device, which can ensure that the daily use of the space below the escape device is not affected. The counterweight 17 is connected to the lifting platform 3 to realize the automatic resetting of the lifting platform 3, forming a reciprocating escape.

[0063] In addition, the concealed reciprocating balcony escape device provided in this embodiment can be flexibly installed in any position because it has no guide rails. It is not limited to balconies and only requires a warning sign to be set up. It can also be used as a barrier-free escape facility for all people.

[0064] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concealed reciprocating balcony escape device, characterized in that: include: An installation frame (2) is provided with a cover plate (1) hinged on the upper side; A pulley assembly is mounted on a side wall corresponding to the mounting frame (2), comprising four fixed pulleys (6), wherein the four fixed pulleys (6) are mounted at respective corners of a cavity of the mounting frame (2) that accommodates the lifting platform (3); A lifting platform (3) having a cross-section adapted to the inner cavity of the installation frame (2) and capable of being placed flat within the installation frame (2); A speed limiter (9) is installed in the installation frame (2), and the lifting platform (3) is connected to the speed limiter (9) through a lifting cable (7), and four lifting cables (7) are provided. The middle parts of the four lifting cables (7) are wound around the corresponding fixed pulleys (6), and one end is fixedly connected to the corresponding corner of the lifting platform (3); A counterweight (17) is locked in the installation frame (2) via a limit switch (18) and can be connected to the lifting platform (3) via a counterweight cable (13); Wherein, under the limiting action of the speed limiter (9), the lifting platform (3) can descend at a uniform speed, and when the lifting platform (3) descends to a set height, the limit switch (18) is driven to unlock, and the counterweight (17) falls under the action of its own weight and is connected to the lifting platform (3); It also includes a connecting main shaft (11), which is installed in the installation frame (2), can rotate along its own axis, and is fixedly connected to a cable reel (8), and one end of the lifting cable (7) is wound on the cable reel (8); The connecting main shaft (11) is in driving connection with the speed limiter (9), and a winding cable drum (12) is provided in the middle thereof, and the winding cable drum (12) is used for winding the counterweight cable (13); The counterweight member (17) is adapted to be equipped with a spring cable reel (16), and the spring cable reel (16) is used to reel in the counterweight cable (13); A trigger member (14) is provided in the middle of the counterweight cable (13), and the trigger member (14) is used to release the lock of the counterweight member (17) by the limit switch (18); In the process of the lifting platform (3) descending, the winding cable drum (12) is driven to reel in the counterweight cable (13); and in the process of the counterweight member (17) being hoisted to the installation frame (2), the spring cable reel (16) reels in the counterweight cable (13).

2. A concealed reciprocating balcony escape device according to claim 1, characterized in that: The installation frame (2) is adapted to be equipped with an electromagnetic lock (21), and the electromagnetic lock (21) is used to lock the cover plate (1) on the installation frame (2).

3. A concealed reciprocating balcony escape device according to claim 2, characterized in that: The electromagnetic lock (21) is connected to an opening alarm component.

4. A concealed reciprocating balcony escape device according to claim 1, characterized in that: Two cable reels (8) are provided, and the two cable reels (8) are respectively arranged at two ends of the connecting main shaft (11), and the lifting cables (7) located on the same side are wound on the corresponding cable reels (8).

5. A concealed reciprocating balcony escape device according to claim 1, characterized in that: The limit switch (18) comprises: A limiting lock tongue (18a), the limiting lock tongue (18a) is movably arranged transversely through the side wall of the installation frame (2); a first connecting rod (18b), wherein the middle portion of the first connecting rod (18b) is hinged to the side wall of the installation frame (2), and the lower end of the first connecting rod (18b) is hinged to an end of the limiting locking tongue (18a) away from the counterweight (17); a second connecting rod (18c), wherein the middle portion of the second connecting rod (18c) is hinged to the side wall of the installation frame (2), the lower end is transmission-connected to the upper end of the first connecting rod (18b), and the upper end is provided with a cable hole (18d); The counterweight cable (13) is passed through the cable hole (18d), the trigger member (14) has an outer dimension larger than the inner diameter of the cable hole (18d), and the trigger member (14) is located on the side of the first connecting rod (18b) facing the counterweight member (17).

6. A concealed reciprocating balcony escape device according to claim 1, characterized in that: The lifting platform (3) is adapted to be equipped with a foot switch (5), and the foot switch (5) is used to lock the lifting platform (3) on the mounting frame (2).

7. A concealed reciprocating balcony escape device according to any one of claims 1 to 6, characterized in that: The lifting platform (3) is adapted to be equipped with a folding armrest (4).

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