Hidden reciprocating balcony escape device

Abstract

The invention discloses a concealed reciprocating balcony escape device, and relates to the technical field of escape fire-fighting supplies, the concealed reciprocating balcony escape device comprises a mounting frame body, the upper side of the mounting frame body is hinged with a cover plate; the pulley assembly is mounted on the corresponding side wall of the mounting frame body; the section of the lifting platform is matched with the inner cavity of the mounting frame body, and the lifting platform can be flatly placed in the mounting frame body; the speed limiter is mounted in the mounting frame body, and the lifting platform is in transmission connection with the speed limiter through a lifting inhaul cable; wherein the middle of the lifting inhaul cable is wound on the pulley assembly, and the lifting platform can descend at a constant speed under the limiting effect of the speed limiter. The escape device can be used without climbing or professional training, escape is facilitated, special crowds can use the escape device conveniently, meanwhile, guide rails or stand columns do not need to be arranged, the space below the escape device is not occupied, and it can be ensured that 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, various residential buildings are getting taller and more crowded. When a fire occurs, the two main ways for people to escape are safe evacuation and passive waiting for rescue: in the event of a fire, the corridor is often filled with smoke, or it is difficult to evacuate due to the fire, which makes active evacuation impossible, especially when there are elderly people and children, it is even more difficult to escape. People often cannot leave the residential building in time and safely, which leads to tragedies; passive waiting for rescue is limited by rescue conditions, such as traffic jams, fire lanes are blocked, and fire truck deployment time and other objective factors. Passive waiting often causes a large amount of smoke to enter the house because the fire brigade rescue time exceeds the golden rescue time. Many people who died in high-rise fires died from inhaling deadly toxic smoke. It can be seen that time is the most important factor in fires.

[0003] The balcony evacuation ladder refers to a safety escape facility added to the balcony. It 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, the reciprocating escape devices used for balcony escape all need to be installed with fixed guide rails or supporting columns. Summary of the invention

[0005] In view of the technical problem that the existing balcony evacuation ladder has poor stability after being deployed, the present invention provides a concealed reciprocating balcony escape device, which realizes the uniform descent of the lifting platform through the cooperation of a cable pulley mechanism and a speed limiter, does not require the provision of guide rails or 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. The automatic resetting of the lifting platform is realized by the connection between the counterweight and the lifting platform, thereby 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 being hinged on 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 is adapted to the inner cavity of the installation frame, and can be placed flat in the installation frame; a speed limiter, the speed limiter is installed in the installation frame, and the lifting platform is connected to the speed limiter through a lifting cable, and the middle part of the lifting cable is wound around the pulley assembly; a counterweight, 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; 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 connected to the lifting platform through its own weight.

[0008] The concealed reciprocating balcony escape device provided by the present invention comprises an installation frame, a pulley assembly, a lifting platform, a speed limiter and a counterweight. The installation frame can be embedded in a floor slab, 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 slab when not in use, and does not affect the use of the balcony; the pulley assembly is installed on the side wall corresponding to 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, 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] Therefore, the concealed reciprocating balcony escape device provided by the present invention can be embedded and installed on the balcony floor for hiding. When it is needed, the cover plate is opened and then moved to the lifting platform, and the lifting platform is connected to the speed limiter through the lifting cable. At this time, under the gravity of the lifting platform and the user, the lifting platform is driven to move down, 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 less than 10 cm from the ground), the limit switch is unlocked, and 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 the lifting platform is achieved through cables, and no special guide rails or supporting columns are required. The space below the escape device is not occupied, which ensures that the daily use of the space below the escape device is not affected. It has a wide range of applications and little impact on the building facade. In the entire escape process, there is no need to climb or undergo professional training, which makes it easy to escape and is convenient for special people to use.

[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 need to set up 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 avoid accidental opening of the cover plate.

[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 for escape.

[0015] In an optional embodiment of the present application, the pulley assembly includes four fixed pulleys, and the four fixed pulleys are installed at the corners of the cavity of the installation frame accommodating 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 ends of the four lifting cables are 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 wheel 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 also includes a connecting main shaft, which is installed in the installation frame and can rotate along its own axis; a cable reel is fixedly connected to the connecting main shaft, and one end of the lifting cable is wound on the cable reel; 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 two 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 by 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 self-connected with the lifting platform in transmission, ensuring that the counterweight can drive the lifting platform to reset, and after the lifting platform is reset and locked, during the process of hoisting the counterweight by the 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 movably penetrated through the side wall of the mounting frame; a first connecting rod, the middle part of which is hinged to the side wall of the mounting frame, and the lower end of the first connecting rod is hinged to an end of the limit lock tongue away from the counterweight; a second connecting rod, the middle part of which 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 through 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, 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 equipped with a foot switch, and the foot switch is used to lock the lifting platform on the installation frame to facilitate rapid release of the lifting platform.

[0022] In an optional embodiment of the present application, the lifting platform is equipped with a folding handrail to facilitate the personnel to hold the lifting platform by hand during the descent of the lifting platform to ensure the safety of escape.

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

[0024] 1. The concealed reciprocating balcony escape device provided by the present invention comprises an installation frame, a pulley assembly, a lifting platform, a speed limiter and a counterweight. The installation frame can be embedded in the floor slab, and a cover plate is hinged on the upper side of the installation frame. The pulley assembly is installed on the side wall corresponding to 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. At the same time, 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, and 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. Under the gravity of the lifting platform and the user, the lifting platform can be 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, the limit switch is unlocked, and the lifting platform can be driven to move up and reset by the gravity of the counterweight, so as to realize automatic reset of the lifting platform and form a reciprocating escape.

[0025] 2. The concealed reciprocating balcony escape device provided by the present invention drives the lifting platform to move 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 the personnel to the next floor for escape. It can be used without climbing and without professional training, which is convenient for escape and easy for special groups of people to use.

[0026] 3. The concealed reciprocating balcony escape device provided by the present invention has a counterweight and a lifting platform, and the movement is achieved by cables, and does not require a dedicated guide rail or supporting column. It 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. It has a wide range of applications and 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 drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.

[0028] In the attached picture:

[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 It is a cross-sectional structural schematic diagram of a concealed reciprocating balcony escape device according to an embodiment of the present invention;

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

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

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

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

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

[0036] Marks and corresponding parts names in the attached drawings:

[0037] 1-cover plate, 2-installation frame, 3-lifting platform, 4-folding handrail, 5-foot switch, 6-fixed pulley, 7-lifting cable, 8-cable reel, 9-speed limiter, 10-connecting shaft, 11-connecting main shaft, 12-winding cable reel, 13-counterweight cable, 14-trigger, 15-lifting ring, 16-spring cable 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] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. 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, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0039] In the description of the embodiments of the present application, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is conventionally placed when in use, or is the orientation or position relationship conventionally understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0040] At the same time, the terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Example

[0042] Combination 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 hinged on the upper side of the installation frame 2; a pulley assembly, the pulley assembly being installed on the side wall corresponding to the installation frame 2; a lifting platform 3, the cross section of the lifting platform 3 being adapted to the inner cavity of the installation frame 2, and being able to be placed flat in the installation frame 2; a speed limiter 9, the speed limiter 9 being installed in the installation frame 2, and the lifting platform 3 being transmission-connected to the speed limiter 9 via a lifting cable 7, the lifting platform 3 The middle part of the cable 7 is wound around the pulley assembly; the counterweight 17 is locked in the installation frame 2 through a limit switch 18, and the counterweight 17 can be connected to the lifting platform 3 through 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 through a transmission connection.

[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 plate 1 on the installation frame 2 to prevent the cover plate 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 in the event of a fire, the cover plate 1 can be unlocked immediately to shorten 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 the person can quickly find the location of the escape device for escape.

[0046] Specifically, the alarm component is connected to the weak current system in the house. The alarm component includes a wireless communication module, such as a Bluetooth connection module, a WiFi connection module, etc., which is used to achieve communication with the user terminal device. It can achieve the effect of locking at ordinary times, opening and automatically alarming in case of fire linkage, realizing the fire alarm function and fully resolving the impact of this device on residents' concerns about anti-theft and privacy.

[0047] As for the pulley assembly, in the present embodiment, the pulley assembly comprises four fixed pulleys 6, and the four fixed pulleys 6 are installed at the corners of the cavity of the installation frame 2 accommodating 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 groove wheel to prevent the lifting cable 7 from slipping off the fixed pulley 6 when moving, thereby ensuring the safety of the lifting platform 3 descending.

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

[0050] It can be understood that two cable reels 8 are provided, and the two cable reels 8 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 winding.

[0051] Generally speaking, the lifting platform 3 is 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 the lock tongue can slide out of the lock hole when the switch is stepped on 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 wind up the counterweight cable 13; the counterweight member 17 is adapted to be equipped with a spring cable winder 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 transmission, 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-cranked crane 20 ( Figure 3 ) During the process of hanging the counterweight 17, the spring cable winder 16 can automatically wind up the counterweight cable 13 to bring the counterweight 17 and the counterweight cable 13 into the installation frame 2.

[0054] Combination Figure 5 and Figure 6 The limit switch 18 includes: a limit lock tongue 18a, which is laterally movably penetrated through the side wall of the installation frame 2; a first connecting rod 18b, the middle part 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 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 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; wherein the counterweight cable 13 is penetrated in the cable hole 18d, the outer size of the trigger member 14 is 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 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] Combine again Figure 6In this embodiment, the limit switch 18 also includes a transfer rod, and the upper end of the first connecting rod 18b and the lower end of the second connecting rod 18c are both provided with long holes, and the two ends of the transfer rod are respectively inserted into the corresponding long holes, and both ends of the transfer rod are provided with limited portions to prevent the ends of the first connecting rod 18b and the second connecting rod 18c from slipping off the transfer rod and realizing transmission. When the lifting platform 3 is lowered to the set height, the trigger member 14 abuts against the second connecting rod 18c, so that the upper end of the second connecting rod 18c is driven to rotate to the right and the lower end is driven to rotate to the left by 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 rotate to the right, thereby driving the limit lock tongue 18a to move to the right to unlock, so that the counterweight 17 can move downward.

[0056] It should be noted that the speed limiter 9 is used to control the descending speed of the lifting platform 3, and can be a commonly used spring balancer or other speed limiting device, which is a prior art, not the technical solution claimed for protection by this application, and does not affect the clarity and completeness of the technical solution of this application, and will not be described in detail in this application. Similarly, the spring cable reel 16, the electromagnetic lock 21 and the foot switch 5 are all existing conventional accessories, not the technical solution claimed for protection by this application, and do not affect the clarity and completeness of the technical solution of this application, and will not be 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 hinged on 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, and does not affect 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, 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 it is needed, the cover plate 1 is opened, and then 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 through the lifting cable 7. At this time, under the gravity of the lifting platform 3 and the user, the lifting platform 3 is driven to move downward, and the speed limiter 9 limits the downward movement of the lifting platform 3, so that the lifting platform 3 descends at a uniform speed, thereby transferring the user to the next floor for escape. At the same time, through the downward movement of the lifting platform 3, the counterweight cable 13 is wound from the spring cable reel 16 on the winding cable disc 12 to drive the trigger 14 to move toward the second connecting rod 18c. Therefore, 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] Combination 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 in 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, and no special guide rails or supporting columns are required. The space below the escape device is not occupied, and the daily use of the space below the escape device is not affected. The application range is wide and the impact on the building facade is small. In the whole escape process, there is no need to climb or undergo professional training, which is convenient for escape and is convenient for special people to use.

[0061] When the disaster is relieved, the hand-cranked crane 20 can be installed on the installation frame 2, and the cable inside it can be connected to the counterweight 17, and the counterweight 17 can be hoisted into the installation frame 2 by the hand-cranked cable reel 8, and the limit switch 18 can be reset to limit the counterweight 17 in the installation frame 2. In the process of the counterweight 17 moving up, the spring cable reel 16 automatically reels the counterweight cable 13 to prevent the counterweight cable 13 from being entangled and ensure that the cable reel 12 can be driven to synchronously reel 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 need to set up 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 automatic resetting of the lifting platform 3, thereby 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. It only needs to set up warning signs, and can 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), wherein a cover plate (1) is hingedly connected to the upper side of the installation frame (2); A pulley assembly, the pulley assembly being mounted on a side wall corresponding to the mounting 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 inside the installation frame (2); A speed limiter (9), the 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 the middle part of the lifting cable (7) is wound around the pulley assembly; A counterweight (17), wherein the counterweight (17) is locked in the installation frame (2) via a limit switch (18), and the counterweight (17) can be transmission-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 transmission-connected to the lifting platform (3).

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) onto 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: The pulley assembly comprises four fixed pulleys (6), and the four fixed pulleys (6) are installed at the corners of the cavity of the installation frame (2) accommodating the lifting platform (3); 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 of the four lifting cables (7) is fixedly connected to the corresponding corner of the lifting platform (3).

5. A concealed reciprocating balcony escape device according to claim 4, characterized in that: It also comprises a connecting main shaft (11), wherein the connecting main shaft (11) is installed in the installation frame (2), and the connecting main shaft (11) is capable of rotating along its own axis; A cable reel (8) is fixedly connected to the connecting main shaft (11), and one end of the lifting cable (7) is reeled on the cable reel (8); Wherein, the connecting main shaft (11) is drivingly connected to the speed limiter (9).

6. A concealed reciprocating balcony escape device according to claim 5, 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).

7. A concealed reciprocating balcony escape device according to claim 5, characterized in that: A winding cable drum (12) is arranged in the middle of the connecting main shaft (11), 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 winder (16), and the spring cable winder (16) is used to wind up 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 winder (16) reels in the counterweight cable (13).

8. A concealed reciprocating balcony escape device according to claim 7, characterized in that: The limit switch (18) comprises: A position-limiting locking tongue (18a), the position-limiting locking tongue (18a) being movably arranged transversely through a 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 drivingly 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 inserted into the cable hole (18d), the outer dimensions of the trigger member (14) are 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).

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

10. A concealed reciprocating balcony escape device according to any one of claims 1 to 9, characterized in that: The lifting platform (3) is adapted to be equipped with a folding handrail (4).

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