Safe escape device for pressurized building and escape method of safe escape device

Abstract

The invention discloses a safety escape device for a pressurized building and an escape method of the safety escape device, and relates to the technical field of pressurized building escape. The safety escape device comprises an escape telescopic channel, stairs, a fire alarm system and a pressure control system.The escape telescopic channel is connected to the pressurized building in a sealed mode through a supporting connecting plate; one side of the supporting connecting plate is connected to an escape window of the pressurized building through a hanging frame, and a first sealing door for communicating the pressurized building with the escape telescopic channel is arranged on the supporting connecting plate; a second sealing door is arranged at the end, away from the supporting connecting plate, of the escape telescopic channel. The internal accommodating space of the escape telescopic channel can be changed according to the number of escape people; and the pressure control system is used for adjusting and balancing the air pressure between the pressurized building and the escape telescopic channel according to the air pressure in the pressurized building so as to conveniently open the first sealing door and pressurize the interior of the escape telescopic channel. The pressure relief escape device effectively solves the pressure relief escape problem of the closed supercharged building under the emergency condition.

Description

Technical Field

[0001] The invention relates to the technical field of safe escape from pressurized buildings, and in particular to a safe escape device for pressurized buildings and an escape method thereof. Background Art

[0002] Pressurized buildings or negative pressure buildings use equipment to pressurize or depressurize the interior of the building, thereby simulating the air pressure environment at different altitudes to achieve the purpose of living or scientific research. Because there is a pressure difference between the indoor and outdoor of a pressurized or negative pressure building when it is in use, the entrance and exit of the building cannot be opened directly under the pressure difference environment, and the life safety of people escaping in an emergency cannot be guaranteed.

[0003] At present, there are many designs and methods for safe escape in conventional buildings, but there is a lack of corresponding design concepts for how to design safe escape systems for personnel in pressurized buildings or negative pressure buildings.

[0004] A Chinese invention patent with publication number CN117018487A discloses an integral mobile pressurized oxygen supplementation cabin suitable for rapid pressure relief and escape in high-altitude areas. The mobile pressurized oxygen supplementation cabin integrates a rapid pressure relief transition cabin, a comprehensive cabin and an equipment cabin into a whole, which can be prefabricated in an overall factory. The pressurized oxygen supplementation cabin has a high degree of structural integration and high energy utilization rate. At the same time, the pressure cabin structure is compatible with a special gas storage structure, and the high-pressure gas source is reasonably used as a power source for domestic water and sewage, thereby improving the functionality and integration of the cabin, and ensuring the continuous use of domestic water in the event of a short-term power outage. The waste heat of the air compressor is reasonably used to preheat the hot water source in the cabin, thereby improving the efficiency of hot water heating, thereby reducing energy consumption, forming a relatively independent circulating living space, and improving the living environment. In addition, in the event of failure of the escape system, the lifeboat can ensure the water supply needs of personnel without a power source.

[0005] However, the above device has a complex structure, which not only increases the production cost, but also makes the assembly structure difficult and the subsequent maintenance difficult. Summary of the invention

[0006] In view of this, the present invention provides a safe escape device for a pressurized building and an escape method thereof, so as to effectively solve the problem of pressure relief and escape in an emergency situation in a closed pressurized building. At the same time, it has the functions of fire alarm reminder, safe pressure relief, pressurization of the escape telescopic channel and adjustment of the internal accommodation space of the escape channel. It has a simple structure, is safe and reliable, and can be reused.

[0007] In order to solve the above problems, the first object of the present invention is to provide a safety escape device for a pressurized building, which is connected to the outer side wall of the pressurized building, and the safety escape device comprises:

[0008] An escape telescopic passage is sealed and connected to the pressurized building through a supporting connecting plate, a side of the supporting connecting plate away from the escape telescopic passage is connected to the escape window of the pressurized building through a hanging bracket, and a first sealing door suitable for connecting the pressurized building with the escape telescopic passage is provided on the supporting connecting plate;

[0009] A staircase, one side of which has a top support connected to the bottom of the side of the escape telescopic passage away from the pressurized building; a second sealing door is provided at one end of the escape telescopic passage away from the supporting connecting plate, and the second sealing door is arranged parallel to and opposite to the first sealing door;

[0010] The escape telescopic passage is adapted to be telescopic from the supporting connecting plate toward the second sealing door, so as to change the internal accommodation space of the escape telescopic passage according to the number of escapees;

[0011] A fire alarm system, comprising a fire controller, a fire detector arranged inside the pressurized building and an audible and visual alarm arranged inside the escape telescopic passage, wherein the fire controller is electrically connected to the fire detector and the audible and visual alarm;

[0012] The pressure control system is used to adjust and balance the air pressure between the pressurized building and the escape telescopic passage according to the air pressure inside the pressurized building when a fire occurs, so as to facilitate opening the first sealed door and pressurizing the interior of the escape telescopic passage.

[0013] As a further improvement of the above technical solution, the escape telescopic passage comprises a support frame connected between the support connecting plate and the staircase, a telescopic shell suitable for being slidably connected to the inside of the support frame, and a fixing component arranged inside the telescopic shell, wherein the fixing component is arranged on a side close to the second sealed door and is suitable for fixing and limiting the second sealed door after the internal accommodation space of the telescopic shell is adjusted into place;

[0014] One end of the support frame close to the pressurized building is suitable for sealing and plugging by the support connecting plate, and the bottom support of one end of the support frame away from the pressurized building is connected to the top platform of the staircase;

[0015] Horizontally arranged slide rails are provided inside the four corners of the support frame along the telescopic direction of the telescopic shell, and the telescopic shell is suitable for horizontally telescoping within the support frame through the slide rails.

[0016] As a further improvement of the above technical solution, the retractable shell includes a side door panel located in the supporting frame and arranged parallel to and opposite to the supporting connecting plate, a connecting rod assembly horizontally connected between the supporting connecting plate and the side door panel, a bottom plate connected to the bottom of the supporting frame, and a fireproof retractable curtain connected between the supporting connecting plate and the outer frame of the side door panel; the fireproof retractable curtain is an inverted U-shaped structure, and the bottom of the fireproof retractable curtain is sealed and connected to the outer frame of the bottom plate through the corresponding side slide rails, and the top of the fireproof retractable curtain is connected through the corresponding side slide rails, and the two connecting rod assemblies are horizontally, parallelly and symmetrically connected in the width direction of the supporting frame and the inside of the fireproof retractable curtain, and the connecting rod assembly is suitable for telescopic deformation to exert a force on both sides of the side door panel, so that the side door panel moves horizontally along the slide rail, thereby changing the size of the internal accommodating space surrounded by the supporting connecting plate, the fireproof retractable curtain, the side door panel and the bottom plate.

[0017] As a further improvement of the above technical solution, the fixing assembly includes:

[0018] A mounting ring, sleeved outside the bolt circle of the side door panel;

[0019] A side panel vertically connected to the inner side of the bottom of the side door panel;

[0020] A connecting rod assembly includes two sets of symmetrical upper connecting rods and lower connecting rods arranged at the top and bottom of one side wall of the side plate;

[0021] A support seat is arranged at one end of the connecting rod assembly away from the side plate; the two upper connecting rods at the top end of the side plate are connected to the top of the support seat through a pin shaft, and the two lower connecting rods at the bottom end of the side plate are connected to the middle part of the support seat through a pin shaft;

[0022] An electric telescopic rod is arranged between the support seat and the side plate, and the bottom end of the electric telescopic rod is connected to the middle of the bottom of one side wall of the side plate, and the top end of the electric telescopic rod is connected to the top of the support seat through the pin shaft at the top;

[0023] The support seat comprises a pillar and a chassis connected to the bottom of the pillar, and the chassis is evenly provided with clamping pillars.

[0024] As a further improvement of the above technical solution, the first sealed door includes a door frame sealed and embedded on both sides of the opening of the supporting connecting plate, a door panel hinged on one side of the door frame through a hinge pin mechanism, and a locking structure arranged in the door panel, and the locking structure is suitable for being clamped between the door panel and the door frame when the door panel is covered in the door frame.

[0025] As a further improvement of the above technical solution, the door panel includes a door bottom plate suitable for being accommodated on the inner stop of the door frame, a support frame for supporting and installing the locking structure, and a cover plate suitable for covering the outer frame of the door bottom plate, and the support frame and the locking structure are located in an internal space formed by the combination of the door bottom plate and the cover plate.

[0026] As a further improvement of the above technical solution, the locking structure includes two support plates symmetrically installed on the support frame, a rack structure vertically limited on the support plate, and a gear shaft structure meshing with the rack structure, and the gear shaft structure is suitable for driving the rack structure to move up and down;

[0027] The support plate comprises an upper connecting plate and a lower connecting plate arranged in parallel and spaced relation, an upper limit groove is provided on an edge of one side of the upper connecting plate close to the support frame, and a lower limit groove is provided on the lower connecting plate opposite to the upper limit groove;

[0028] The rack structure comprises a first side rack and a second side rack which are vertically parallel and symmetrically arranged in an anti-symmetrical manner, and a first upper latch pin and a first lower latch pin are respectively arranged at ends of the first side rack and the second side rack which are away from each other;

[0029] The gear shaft structure includes a rotating shaft horizontally passing through both sides of the door panel, a gear and a bearing connected to the rotating shaft, a hand wheel connected to the end of the rotating shaft, a connecting rod connected to the second side rack on the side away from the loose-leaf pin mechanism, and a side latch hinged at the end of the connecting rod. The rotating shaft is rotatably connected between the first side rack and the second side rack through the bearing support, and both sides of the gear are respectively meshed and transmission-connected with the first side rack and the second side rack;

[0030] The two connecting rods are respectively installed at the top and middle of the second side rack away from the first side rack, and the end of the top connecting rod is hingedly connected to the upper side pin, and the end of the middle connecting rod is hingedly connected to the lower side pin, and the middle connecting rod is also located below the lower connecting plate;

[0031] When the rotating shaft is driven to rotate by the hand wheel and the door panel is covered on the door frame, the first upper latch pin is suitable for being inserted into the top socket of the door frame driven by the first side rack, the first lower latch pin is suitable for being inserted into the bottom socket of the door frame driven by the second side rack, and the upper side pin and the lower side pin are suitable for being inserted into the side sockets of the door frame driven by the second side rack.

[0032] As a further improvement of the above technical solution, the pressure control system includes a pressure controller, a pressure relief valve installed on the wall of the pressurized building, a carbon dioxide concentration detector and an oxygen concentration detector located in the pressurized building, a fan installed outside the pressurized building, and a pressure balance indicator installed in the escape telescopic passage, and the pressure controller is electrically connected to the pressure relief valve, the carbon dioxide concentration detector, the oxygen concentration detector, the fan and the pressure balance indicator, respectively.

[0033] As a further improvement of the above technical solution, the second sealing door has the same structure as the first sealing door, and a fireproof rolling shutter door is also provided on the inner side of the escape window of the pressurized building.

[0034] The second object of the present invention is to provide a safe escape method for a pressurized building. Based on the above-mentioned safe escape device for a pressurized building, the escape method comprises the following steps:

[0035] Step S 100 : The escape telescopic passage is sealed and connected to the escape window of the pressurized building through the supporting connecting plate, and the carbon dioxide content and oxygen content in the air inside the pressurized building are monitored in real time through the fire alarm system;

[0036] Step S 200 : When the fire alarm system detects a fire inside the pressurized building, the pressure control system pressurizes the escape telescopic passage, so that the internal air pressure between the pressurized building and the escape telescopic passage is quickly balanced;

[0037] Step S 300 : When the air pressure inside the escape telescopic passage is close to the air pressure inside the pressurized building, the fire shutter door and the first sealing door on the supporting connecting plate are opened to allow the escapees to evacuate quickly into the escape telescopic passage, and the internal accommodation space of the escape telescopic passage is changed according to the number of escapees;

[0038] Step S 400 : Close the first sealing door on the supporting connecting plate, and continue to pressurize the escape telescopic channel through the pressure control system so that the air pressure in the escape telescopic channel meets the use needs of the escapers.

[0039] Step S 500 : When the escapee needs to further evacuate the escape telescopic passage, the pressure control system releases the pressure in the escape telescopic passage to open the second sealing door, and then escapes through the stairs.

[0040] Compared with the prior art, the present invention has significant advantages and beneficial effects, which are specifically embodied in the following aspects:

[0041] 1. The safety escape device of the present invention is composed of an escape telescopic passage, a staircase, a fire alarm system and a pressure control system, wherein the escape telescopic passage is a telescopic structure, and the internal space of the passage can be adjusted according to the number of people escaping to adapt to different escape needs. This design allows the escape telescopic passage to remain compact and save space in non-emergency situations, and can be quickly expanded in emergency situations to provide sufficient escape space; the support connecting plate seals the escape telescopic passage to the pressurized building, and the hanger on the support connecting plate fixes the support connecting plate to the escape window on the outer side of the pressurized building. This support connecting plate can not only ensure the sealing between the escape telescopic passage and the pressurized building, prevent smoke and flame from entering the escape telescopic passage, but also facilitate rapid deployment; the first sealing door and the second sealing door are respectively located on both sides of the telescopic direction of the escape telescopic passage, so as to keep the escape telescopic passage isolated from the inside of the pressurized building in case of fire, and prevent smoke and flame from entering the escape telescopic passage. The first sealing door and the second sealing door can also be quickly sealed and closed in the event of a fire to protect the safety of the escapees; the stairs are connected to one side of the escape telescopic passage, providing a stable climbing path for the escapees, facilitating their transfer from the inside of the escape telescopic passage. Once a fire is detected, the fire alarm system immediately notifies and reminds the personnel in the pressurized building to evacuate; the pressure control system is used to adjust the air pressure between the pressurized building and the escape telescopic passage in the event of a fire, ensuring that the first sealing door can be opened smoothly, and pressurizing the inside of the escape telescopic passage to prevent smoke and toxic gases from entering the passage. Therefore, the design of this safe escape device takes into account multiple aspects such as rapid deployment, sealing, pressure regulation and fire alarm, providing a safe escape route for people in the pressurized building; through automated and intelligent design, the device can respond quickly in an emergency and improve escape efficiency and safety.

[0042] 2. The telescopic escape passage is sealed without occupying additional space, ensuring the sealing between the telescopic escape passage and the pressurized building, preventing smoke and flames from entering the passage; the two connecting rod assemblies are horizontally, parallel and symmetrically connected in the width direction of the supporting frame and inside the fireproof telescopic curtain. The two connecting rod assemblies can be telescopically deformed and exert force on both sides of the side door panels, so that the side door panels can move horizontally along the slide rails under the force of the two connecting rod assemblies, thereby changing the size of the internal accommodation space surrounded by the supporting connecting plate, the fireproof telescopic curtain, the side door panels and the bottom plate to meet the needs of different number of people escaping.

[0043] 3. The setting of the fixing component provides additional fixing support for the retractable shell, which enhances the rigidity and stability of the retractable shell. Therefore, under the action of the fixing component, when a fire breaks out and the wind force changes unexpectedly, the force exerted by the wind on the retractable shell is reduced, and the stability between the fireproof retractable curtain and the bottom plate is strengthened to ensure that the retractable shell will not be blown away, thereby further ensuring the life safety of the escapees.

[0044] 4. In an emergency such as a fire, the door panel can be firmly closed to prevent smoke and flames from spreading through the door gap; the first sealed door and the supporting connecting plate are sealed by the coordinated work of the door frame, door panel and locking structure; the locking structure not only enhances the sealing of the first sealed door, but also improves the safety of the door. The locking structure can also make the door panel tightly pressed against the sealing strip of the door frame to ensure that the door will not be easily opened, thereby protecting the safety of people inside the escape passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the safety escape device for pressurized buildings in an embodiment of the present invention;

[0046] Figure 2 It is a schematic diagram of the assembly structure of the escape telescopic channel and the supporting connecting plate in an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the internal structure of the telescopic escape passage in an embodiment of the present invention;

[0048] Figure 4 It is a structural schematic diagram of a fixing component in an embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the structure of the first sealing door in one direction in an embodiment of the present invention;

[0050] Figure 6 This is a schematic diagram of the structure of the first sealing door in another direction in an embodiment of the present invention;

[0051] Figure 7 Schematic diagram of the exploded structure of the first sealing door in an embodiment of the present invention;

[0052] Figure 8 It is a structural schematic diagram of a locking structure in an embodiment of the present invention;

[0053] Fig. 9 It is a schematic diagram of the system connection structure between the fire alarm system, the pressure control system, the pressurized building and the escape telescopic passage in an embodiment of the present invention;

[0054] Fig.10 It is a schematic flow chart of a safe escape method for a pressurized building in an embodiment of the present invention.

[0055] Description of reference numerals:

[0056] 1- Telescopic escape passage;

[0057] 11-support frame; 111-slide rail;

[0058] 12-retractable housing; 121-side door panel; 122-connecting rod assembly; 123-fireproof retractable curtain; 124-bottom plate;

[0059] 13-fixing assembly; 131-support seat; 1311-chassis; 13111-clamping column; 1312-pillar; 132-connecting rod component; 1321-upper connecting rod; 1322-lower connecting rod; 133-electric telescopic rod; 134-side plate; 135-mounting ring;

[0060] 2-Support connecting plate;

[0061] 21-hanging rack;

[0062] 22- first sealing door;

[0063] 221-door frame; 222-door panel; 2221-door bottom plate; 2222-support frame; 2223-cover plate;

[0064] 223- loose-leaf pin mechanism;

[0065] 224-locking structure;

[0066] 2241-support plate; 22411-upper connecting plate; 224111-upper limit slot; 22412-lower connecting plate; 224121-lower limit slot;

[0067] 2242- rack structure; 22421- first side rack; 224211- first upper latch; 22422- second side rack; 224221- first lower latch;

[0068] 2243-gear shaft structure; 22431-rotating shaft; 22432-gear; 22433-bearing; 22434-handwheel; 22435-connecting rod; 22436-side latch; 224361-upper side pin; 224362-lower side pin;

[0069] 3- Stairs;

[0070] 4- Pressurized buildings;

[0071] 5-fire alarm system; 51-fire controller; 52-fire detector; 53-sound and light alarm; 54-manual alarm button;

[0072] 6-pressure control system; 61-pressure controller; 62-pressure relief valve; 63-carbon dioxide concentration detector; 64-oxygen concentration detector; 65-air blower; 651-air supply duct; 652-air supply outlet; 66-pressure balance indicator. DETAILED DESCRIPTION

[0073] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0074] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0075] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0076] It should be noted that, in the description of this specification, the reference terms "embodiment", "one embodiment" and "one implementation" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or implementations in a suitable manner.

[0077] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0078] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0079] See also Figure 1-9 As shown, an embodiment of the present invention provides a safety escape device for a pressurized building, which is connected to the outer wall of a pressurized building 4. The safety escape device includes an escape telescopic passage 1, a staircase 3, a fire alarm system 5 and a pressure control system 6, wherein:

[0080] The escape telescopic passage 1 is sealed and connected to the pressurized building 4 through a supporting connecting plate 2. The side of the supporting connecting plate 2 away from the escape telescopic passage 1 is connected to the escape window of the pressurized building 4 through a hanging bracket 21. The supporting connecting plate 2 is provided with a first sealing door 22 suitable for connecting the pressurized building 4 with the escape telescopic passage 1; the top support of one side of the staircase 3 is connected to the bottom of the side of the escape telescopic passage 1 away from the pressurized building 4; a second sealing door is provided at one end of the escape telescopic passage 1 away from the supporting connecting plate 2, and the second sealing door is arranged parallel to and directly opposite to the first sealing door 22;

[0081] The escape telescopic passage 1 is adapted to be telescopic from the supporting connecting plate 2 toward the second sealing door, so as to change the internal accommodation space of the escape telescopic passage 1 according to the number of escapees;

[0082] The fire alarm system 5 includes a fire controller 51, a fire detector 52 arranged inside the pressurized building 4, and an audible and visual alarm 53 arranged inside the escape telescopic passage 1. The fire controller 51 is electrically connected to the fire detector 52 and the audible and visual alarm 53; the pressure control system 6 is used to adjust and balance the air pressure between the pressurized building 4 and the escape telescopic passage 1 according to the air pressure inside the pressurized building 4 when a fire occurs, so as to facilitate opening the first sealing door 22 and pressurizing the inside of the escape telescopic passage 1.

[0083] Specifically in the embodiment of the present invention, the safe escape device is composed of an escape telescopic passage 1, a staircase 3, a fire alarm system 5 and a pressure control system 6, wherein the escape telescopic passage 1 is a telescopic structure, and the internal space of the passage can be adjusted according to the number of people escaping to adapt to different escape needs. This design allows the escape telescopic passage 1 to remain compact and save space in non-emergency situations, and can be quickly expanded in emergency situations to provide sufficient escape space; the support connecting plate 2 seals the escape telescopic passage 1 to the pressurized building 4, and the bracket 21 on the support connecting plate 2 fixes the support connecting plate 2 at the escape window on the outer side of the pressurized building 4. This support connecting plate 2 can not only ensure the sealing between the escape telescopic passage 1 and the pressurized building 4 to prevent smoke and flames from entering the escape telescopic passage 1, but also facilitates rapid deployment; the first sealing door 22 and the second sealing door are respectively located on both sides of the telescopic direction of the escape telescopic passage 1, so as to keep the escape telescopic passage 1 isolated from the inside of the pressurized building 4 in case of fire to prevent smoke and flames from entering the escape telescopic passage 1. The first sealing door 22 and the second sealing door can be quickly sealed and closed when a fire occurs to protect the safety of the escapees; the staircase 3 is connected to one side of the escape telescopic passage 1, providing a stable climbing path for the escapees, facilitating their transfer from the inside of the escape telescopic passage 1.

[0084] The fire alarm system includes a fire controller 51, a fire detector 52 and an audible and visual alarm 53. The fire detector 52 is installed inside the pressurized building 4. Once a fire is detected, the fire controller 51 is immediately notified. The fire controller 51 then activates the audible and visual alarm 53 to remind people in the pressurized building 4 to evacuate.

[0085] The pressure control system 6 is used to adjust the air pressure between the pressurized building 4 and the escape telescopic passage 1 when a fire occurs, to ensure that the first sealed door 22 can be opened smoothly, and to pressurize the interior of the escape telescopic passage 1 to prevent smoke and toxic gases from entering the passage.

[0086] Therefore, the design of this safe escape device takes into account rapid deployment, sealing, pressure regulation and fire alarm, providing a safe escape route for people in pressurized buildings. Through automated and intelligent design, the device can respond quickly in an emergency, improving escape efficiency and safety.

[0087] For further information, see Figure 1 , 2 As shown in Figures 3 and 4, the escape telescopic passage 1 includes a support frame 11 connected between a support connecting plate 2 and a staircase 3, a telescopic shell 12 suitable for being slidably connected inside the support frame 11, and a fixing component 13 arranged inside the telescopic shell 12, wherein the fixing component 13 is arranged on a side close to the second sealing door, and is suitable for fixing and limiting the second sealing door after the internal accommodating space of the telescopic shell 12 is adjusted into place; the end of the support frame 11 close to the pressurized building 4 is suitable for being sealed and blocked by the support connecting plate 2, and the bottom support of the end of the support frame 11 away from the pressurized building 4 is connected to the top platform of the staircase 3; horizontally arranged slide rails are arranged inside the four corners of the support frame 11 along the telescopic direction of the telescopic shell 12, and the telescopic shell 12 is suitable for horizontally telescoping in the support frame 11 through the slide rails.

[0088] Specifically, in the specific scheme of the embodiment of the present invention, the escape telescopic passage 1 realizes the flexible adjustment of the length of the escape telescopic passage 1 through the design of the support frame 11 and the telescopic shell 12, so that the escape telescopic passage 1 can quickly adjust the internal space according to the number of escapees and the needs of the emergency situation to adapt to different escape needs. At the same time, the telescopic shell 12 is horizontally extended and retracted in the support frame 11 through the slide rail, which ensures the rapid deployment and retraction of the telescopic shell 12; the fixing component 13 is arranged on the side close to the second sealing door. When the internal accommodation space of the telescopic shell 12 is adjusted to the right position, the fixing component 13 can fix the second sealing door. In this way, the sealing of the escape telescopic passage 1 is ensured during the escape process, smoke and flames are prevented from entering the passage, and the safety of the escapees is ensured.

[0089] One end of the support frame 11 is sealed by the support connecting plate 2, and the bottom support of the other end is connected to the top platform of the stairs 3, so that the support frame 11 provides a stable connection between the pressurized building 4 and the stairs 3, ensuring the stability and reliability of the escape passage; horizontally arranged slide rails are provided inside the four corners of the support frame 11 along the telescopic direction of the telescopic shell 12, and the slide rails allow the telescopic shell 12 to be smoothly telescoped horizontally in the support frame 11, which not only improves the deployment efficiency of the escape telescopic passage 1, but also ensures the stability of the passage at different lengths.

[0090] For further information, see Figure 2 , 3 As shown, the retractable housing 12 includes a side door panel 121 located in the support frame 11 and arranged parallel to the support connecting plate 2, a connecting rod assembly 122 horizontally connected between the support connecting plate 2 and the side door panel 121, a bottom plate 124 connected to the bottom of the support frame 11, and a fireproof retractable curtain 123 connected between the support connecting plate 2 and the outer frame of the side door panel 121; the fireproof retractable curtain 123 is an inverted U-shaped structure, and the bottom of the fireproof retractable curtain 123 is respectively connected to the bottom plate 124 through the corresponding side slide rails. The outer frame is sealed and connected, the top of the fireproof telescopic curtain 123 is connected by the corresponding side slide rails, and the two connecting rod assemblies 122 are horizontally parallel and symmetrically connected in the width direction of the support frame 11 and the inside of the fireproof telescopic curtain 123. The connecting rod assembly 122 is suitable for telescopic deformation and exerting force on both sides of the side door panel 121 to make the side door panel 121 move horizontally along the slide rails, thereby changing the size of the internal accommodating space surrounded by the supporting connecting plate 2, the fireproof telescopic curtain 123, the side door panel 121 and the bottom plate 124.

[0091] Specifically, in the specific scheme of the embodiment of the present invention, the side door panel 121 is arranged parallel to the supporting connecting plate 2, and allows the escape telescopic passage 1 to be sealed and connected without occupying additional space, thereby ensuring the sealing between the escape telescopic passage 1 and the pressurized building 4, and preventing smoke and flames from entering the passage; the two connecting rod assemblies 122 are horizontally parallel and symmetrically connected in the width direction of the supporting frame 11 and inside the fireproof telescopic curtain 123, and the two connecting rod assemblies 122 can be telescopically deformed and exert force on both sides of the side door panel 121, so that the side door panel 121 can move horizontally along the slide rail under the force of the two connecting rod assemblies 122, thereby changing the size of the internal accommodation space surrounded by the supporting connecting plate 2, the fireproof telescopic curtain 123, the side door panel 121 and the bottom plate 124 to meet the needs of different number of people escaping.

[0092] Preferably, the fireproof telescopic curtain 123 is set as an inverted U-shaped structure. This structural design allows the curtain to fit tightly during the telescopic process to maintain the sealing of the passage. The bottom of the fireproof telescopic curtain 123 is sealed with the outer frame of the bottom plate 124 through a slide rail, and the top is also connected through a slide rail, ensuring stability and sealing during the telescopic process; the design of the slide rail allows the telescopic shell 12 to be horizontally telescoped in the support frame 11, which not only improves the deployment efficiency of the escape passage, but also ensures the stability of the passage at different lengths. The slide rail serves as a guiding and supporting structure, allowing the telescopic shell 12 to telescope smoothly; the fixing assembly 13 is arranged on the side close to the second sealing door, and after the internal accommodation space of the telescopic shell 12 is adjusted into place, the second sealing door is fixed and limited.

[0093] For further information, see Figure 3 , 4 As shown, the fixing assembly 13 includes a mounting ring 135, a side plate 134, a connecting rod component 132, a support seat 131 and an electric telescopic rod 133, wherein:

[0094] The mounting ring 135 is sleeved on the outer side of the bolt circle of the side door plate 121; the side plate 134 is vertically connected to the inner side of the bottom of the side door plate 121; the connecting rod component 132 includes two sets of symmetrical upper connecting rods 1321 and lower connecting rods 1322 arranged on the top and bottom of one side wall of the side plate 134;

[0095] The support seat 131 is arranged at one end of the connecting rod component 132 away from the side plate 134; the two upper connecting rods 1321 at the top of the side plate 134 are connected to the top of the support seat 131 through a pin shaft, and the two lower connecting rods 1322 at the bottom of the side plate 134 are connected to the middle part of the support seat 131 through a pin shaft;

[0096] The electric telescopic rod 133 is arranged between the support seat 131 and the side plate 134, and the bottom end of the electric telescopic rod 133 is connected to the middle of the bottom of one side wall of the side plate 134, and the top end of the electric telescopic rod 133 is connected to the top of the support seat 131 through the pin shaft at the top;

[0097] The support base 131 includes a support column 1312 and a bottom plate 1311 connected to the bottom of the support column 1312 , and the bottom plate 1311 is evenly provided with clamping columns 13111 .

[0098] Specifically in the specific scheme of the embodiment of the present invention, the mounting ring 135 is sleeved on the outside of the bolt circle of the side door panel 121, so that the connection between the side door panel 121 and the mounting ring 135 is more stable, which facilitates the fixation and installation of the side door panel 121; the side panel 134 is vertically connected to the inner side of the bottom of the side door panel 121, providing additional support for the fixing component 13, thereby enhancing the rigidity and stability of the retractable shell 12.

[0099] The connecting rod component 132 includes an upper connecting rod 1321 and a lower connecting rod 1322, which are arranged at the top and bottom of the side plate 134 and connected to the support seat 131 through a pin. The design of the connecting rod component 132 allows the side plate 134 to perform a smooth telescopic movement when subjected to the force of the electric telescopic rod 133, while maintaining the stability and alignment of the side plate 134; the support seat 131 is arranged at one end of the connecting rod component 132 away from the side plate 134. In this embodiment, the support seat 131 includes a pillar 1312 and a chassis 1311, and the chassis 1311 is evenly provided with clamping columns 13111. The design of the support seat 131 provides a stable fixing point for the electric telescopic rod 133, ensuring the smooth movement and precise control of the telescopic rod; the electric telescopic rod 133 is the core power component in the fixing assembly 13, and its bottom end is connected to the middle of the side plate 134, and its top end is connected to the top of the support seat 131 through a pin. The electric telescopic rod 133 realizes the telescopic movement of the support base 131 through the movement of the motor, thereby enabling the support base 131 to adjust its position quickly and accurately.

[0100] For further information, see Figure 5 , 6 As shown, the first sealed door 22 includes a door frame 221 sealed and embedded on both sides of the opening on the supporting connecting plate 2, a door panel 222 hinged on one side of the door frame 221 through a hinge pin mechanism 223, and a locking structure 224 arranged in the door panel 222, and the locking structure 224 is suitable for being clamped between the door panel 222 and the door frame 221 when the door panel 222 is covered in the door frame 221.

[0101] Specifically in this embodiment, the door frame 221 is embedded on both sides of the opening on the supporting connecting plate 2, so that the door frame 221 and the supporting connecting plate 2 form a close fit, ensuring that the door panel 222 can form a good seal with the supporting connecting plate 2 when closed; the door panel 222 is hinged to one side of the door frame 221 through a hinge pin mechanism 223. This hinged connection allows the door panel 222 to rotate freely within a certain angle, which is convenient for opening and closing the door panel 222, and at the same time ensures that the door panel 222 can fit closely with the door frame 221 when closed, thereby enhancing the sealing effect; the locking structure 224 is arranged in the door panel 222, and when the door panel 222 covers the door frame 221, the locking structure 224 can be clamped between the door panel 222 and the door frame 221.

[0102] Thus, in an emergency such as a fire, the door panel 222 can be firmly closed to prevent smoke and flames from spreading through the door gap; the first sealed door 22 and the supporting connecting plate 2 are sealed by the coordinated work of the door frame 221, the door panel 222 and the locking structure 224. The locking structure 224 not only enhances the sealing of the first sealed door 22, but also improves the safety of the door. In a fire or other emergency, the locking structure 224 can not only make the door panel 222 tightly pressed against the sealing strip of the door frame 221, but also ensure that the door will not be easily opened, thereby protecting the safety of people inside the escape passage.

[0103] For further information, see Figure 6 , 7 As shown, the door panel 222 includes a door bottom plate 2221 suitable for being accommodated on the inner stop of the door frame 221, a support frame 2222 for supporting and installing a locking structure 224, and a cover plate 2223 suitable for covering the outer frame of the door bottom plate 2221. The support frame 2222 and the locking structure 224 are located in an internal space formed by the combination of the door bottom plate 2221 and the cover plate 2223.

[0104] Thus, the door bottom plate 2221 can be accommodated on the inner stop of the door frame 221, ensuring that the door panel 222 can fit closely with the door frame 221 when closed to form a good seal; the support frame 2222 is used to support and install the locking structure 224. The support frame 2222 in this embodiment is located in the internal space formed between the door bottom plate 2221 and the cover plate 2223, so that the locking structure 224 is firmly supported and ensures that the locking structure 224 can be effectively clamped between the door panel 222 and the door frame 221 when the door panel 222 is closed. Enhance the sealing and safety of the door; the cover plate 2223 is covered on the outer frame of the door bottom plate 2221, which not only enhances the strength of the door panel 222, but also prevents the external environment from affecting the internal structure of the door panel 222, such as preventing the intrusion of moisture, dust, etc.; the support frame 2222 and the locking structure 224 are located in the internal space formed by the combination of the door bottom plate 2221 and the cover plate 2223, making full use of the internal space of the door panel 222, so that the locking structure 224 and the support frame 2222 can be effectively protected, and it is also convenient for maintenance and inspection.

[0105] For further information, see Figure 7 , 8 As shown, the locking structure 224 includes two support plates 2241 symmetrically installed on the support frame 2222, a rack structure 2242 vertically limited on the support plate 2241, and a gear shaft structure 2243 meshing with the rack structure 2242 for transmission, and the gear shaft structure 2243 is suitable for driving the rack structure 2242 to move up and down;

[0106] The support plate 2241 includes an upper connecting plate 22411 and a lower connecting plate 22412 which are arranged horizontally and parallel to each other. An upper limit groove 224111 is formed on one edge of the upper connecting plate 22411 close to the support frame 2222, and a lower limit groove 224121 is formed on the lower connecting plate 22412 opposite to the upper limit groove 224111.

[0107] The rack structure 2242 includes a first side rack 22421 and a second side rack 22422 which are vertically parallel and symmetrically arranged inversely, and a first upper latch pin 224211 and a first lower latch pin 224221 are respectively arranged at ends of the first side rack 22421 and the second side rack 22422 which are away from each other;

[0108] The gear shaft structure 2243 includes a rotating shaft 22431 horizontally penetrating the two sides of the door panel 222, a gear 22432 and a bearing 22433 connected to the rotating shaft 22431, a hand wheel 22434 connected to the end of the rotating shaft 22431, a connecting rod 22435 connected to the second side rack 22422 on the side away from the loose-leaf pin mechanism 223, and a side latch 22436 hinged at the end of the connecting rod 22435. The rotating shaft 22431 is supported and rotatably connected between the first side rack 22421 and the second side rack 22422 by the bearing 22433, and the two sides of the gear 22432 are respectively meshed and transmission-connected with the first side rack 22421 and the second side rack 22422.

[0109] The two connecting rods 22435 are respectively installed at the top and the middle of the second side rack 22422 away from the first side rack 22421, and the end of the top connecting rod 22435 is hingedly connected to the upper pin 224361, and the end of the middle connecting rod 22435 is hingedly connected to the lower pin 224362. The middle connecting rod 22435 is also located below the lower connecting plate 22412.

[0110] When the rotating shaft 22431 is driven to rotate by the hand wheel 22434 and the door panel 222 is covered on the door frame 221, the first upper latch pin 224211 is suitable for being inserted into the top socket of the door frame 221 driven by the first side rack 22421, the first lower latch pin 224221 is suitable for being inserted into the bottom socket of the door frame 221 driven by the second side rack 22422, and the upper side pin 224361 and the lower side pin 224362 are suitable for being inserted into the side sockets of the door frame 221 driven by the second side rack 22422.

[0111] Specifically in this embodiment, the two support plates 2241 are symmetrically installed on the support frame 2222, ensuring the stability and reliability of the locking structure 224 during operation; the rack structure 2242 is vertically limited on the support plate 2241, so that the rack structure 2242 can move up and down to achieve the locking and unlocking functions; the up and down movement of the rack structure 2242 is achieved through the transmission of the gear shaft structure 2243, providing precise control. As a preferred mode of this embodiment, the gear shaft structure 2243 includes a rotating shaft 22431, a gear 22432, a bearing 22433 and a hand wheel 22434. The coordinated work of these components enables the locking structure 224 to be locked and unlocked by manually operating the hand wheel 22434, which is easy to operate; the first upper latch pin 224211 and the first lower latch pin 224221 are respectively inserted into the top and bottom insertion holes of the door frame 221 under the drive of the rack structure 2242, and the upper side pin 224361 and the lower side pin 224362 are inserted into the side insertion holes of the door frame 221. This design ensures the stability and sealing effect of the door panel 222 when locked.

[0112] Therefore, considering the reliability of operation, through the coordinated work of multiple components, it is ensured that in an emergency, such as a fire, the door panel 222 can be firmly locked to the door frame 221 to prevent the spread of harmful gases and flames. Through precise mechanical transmission and locking mechanisms, the structure can provide a stable seal in an emergency to ensure the safety of the escape telescopic channel 1.

[0113] For further information, see Figure 1 , 9 As shown, the pressure control system 6 includes a pressure controller 61, a pressure relief valve 62 installed on the wall of the pressurized building 4, a carbon dioxide concentration detector 63 and an oxygen concentration detector 64 located in the pressurized building 4, a blower 65 installed outside the pressurized building 4 and a pressure balance indicator 66 installed in the escape telescopic passage 1, and the pressure controller 61 is electrically connected to the pressure relief valve 62, the carbon dioxide concentration detector 63, the oxygen concentration detector 64, the blower 65 and the pressure balance indicator 66 respectively.

[0114] Specifically in this embodiment, the pressure controller 61 can be automatically adjusted according to the set pressure value to maintain the stability of the system pressure. When the system pressure deviates from the set value, the pressure controller 61 will send a signal to drive the actuator (such as the pressure relief valve 62 and the blower 65) to adjust to achieve the desired pressure control effect.

[0115] Specifically, the pressure relief valve 62 is installed on the wall of the pressurized building 4. When the internal pressure of the pressurized building 4 exceeds the safety threshold, the pressure relief valve 62 will automatically open to release the excess pressure to prevent the pressure difference between the pressurized building 4 and the escape telescopic passage 1 from being too large, resulting in the inability to open the first sealing door 22 on the supporting connecting plate 2; the carbon dioxide concentration detector 63 and the oxygen concentration detector 64 are used to monitor the air quality inside the pressurized building 4. For example, the carbon dioxide concentration detector 63 can detect the carbon dioxide content in the air inside the pressurized building 4, while the oxygen concentration detector 64 is used to monitor the oxygen content level. When the concentration exceeds the preset safety value, the detector will send a signal to the pressure controller 61 to trigger corresponding adjustment measures, such as adjusting the air supply volume or starting the exhaust system to maintain a suitable indoor environment.

[0116] The blower 65 is installed outside the pressurized building 4 and is responsible for delivering fresh air to the inside of the telescopic escape passage 1 to maintain positive pressure and good air quality. The blower 65 can respond to the instructions of the pressure controller 61 and adjust the air supply volume to ensure that the pressure and air quality inside the telescopic escape passage 1 meet the requirements.

[0117] The pressure balance indicator 66 is installed in the escape telescopic passage 1, and is used to indicate the pressure status in the escape telescopic passage 1. In case of fire or other emergency, it can help the escapers understand whether the pressure in the escape telescopic passage 1 is balanced with the pressure between the pressurized building 4, so as to judge whether the first sealing door 22 can be opened safely and conveniently, and then the escape telescopic passage 1 can be used.

[0118] For further information, see Figure 1 , 2 As shown in Figure 9, the second sealing door has the same structure as the first sealing door 22, and a fireproof rolling shutter door is also provided on the inner side of the escape window of the pressurized building 4.

[0119] Therefore, by setting the fireproof rolling shutter door, the escape telescopic passage 1 and the supporting connecting plate 2 are further isolated.

[0120] See also Fig.10 As shown, an embodiment of the present invention further provides a safe escape method for a pressurized building. Based on the safe escape device for a pressurized building, the escape method comprises the following steps:

[0121] Step S 100 : The escape telescopic passage 1 is sealed and connected to the escape window of the pressurized building 4 through the supporting connecting plate 2, and the carbon dioxide content and oxygen content in the air inside the pressurized building 4 are monitored in real time through the fire alarm system 5;

[0122] Step S 200: When the fire alarm system 5 detects a fire inside the pressurized building 4, the pressure control system 6 performs a pressurization operation on the escape telescopic passage 1, so that the internal air pressure between the pressurized building 4 and the escape telescopic passage 1 is quickly in a balanced state;

[0123] Step S 300 : When the air pressure inside the escape telescopic passage 1 is close to the air pressure inside the pressurized building 4, the fire shutter door and the first sealing door 22 on the supporting connecting plate 2 are opened to allow the escapees to quickly evacuate to the escape telescopic passage 1, and the internal accommodation space of the escape telescopic passage 1 is changed according to the number of escapees;

[0124] Step S 400 : Close the first sealing door 22 on the supporting connecting plate 2, and continue to pressurize the escape telescopic passage 1 through the pressure control system 6, so that the air pressure in the escape telescopic passage 1 meets the use requirements of the escapers.

[0125] Step S 500 When the escapee needs to further evacuate the escape telescopic passage 1, the pressure control system 6 releases the pressure on the escape telescopic passage 1 to open the second sealing door, and then escapes through the stairs 3.

[0126] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A safety escape device for a pressurized building, connected to the outer side wall of the pressurized building, characterized in that: include: An escape telescopic passage is sealed and connected to the pressurized building through a supporting connecting plate, a side of the supporting connecting plate away from the escape telescopic passage is connected to the escape window of the pressurized building through a hanging bracket, and a first sealing door suitable for connecting the pressurized building with the escape telescopic passage is provided on the supporting connecting plate; A staircase, one side of which has a top support connected to the bottom of the side of the escape telescopic passage away from the pressurized building; a second sealing door is provided at one end of the escape telescopic passage away from the supporting connecting plate, and the second sealing door is arranged parallel to and opposite to the first sealing door; The escape telescopic passage is adapted to be telescopic from the supporting connecting plate toward the second sealing door, so as to change the internal accommodation space of the escape telescopic passage according to the number of escapees; A fire alarm system, comprising a fire controller, a fire detector arranged inside the pressurized building and an audible and visual alarm arranged inside the escape telescopic passage, wherein the fire controller is electrically connected to the fire detector and the audible and visual alarm; The pressure control system is used to adjust and balance the air pressure between the pressurized building and the escape telescopic passage according to the air pressure inside the pressurized building when a fire occurs, so as to facilitate opening the first sealed door and pressurizing the interior of the escape telescopic passage.

2. The safety escape device for pressurized buildings according to claim 1 is characterized in that: The escape telescopic passage comprises a support frame connected between the support connecting plate and the staircase, a telescopic shell adapted to be slidably connected to the inside of the support frame, and a fixing component arranged inside the telescopic shell, wherein the fixing component is arranged on a side close to the second sealed door and is adapted to fix and limit the second sealed door after the internal accommodation space of the telescopic shell is adjusted to a position; One end of the support frame close to the pressurized building is suitable for sealing and plugging by the support connecting plate, and the bottom support of one end of the support frame away from the pressurized building is connected to the top platform of the staircase; Horizontally arranged slide rails are provided inside the four corners of the support frame along the telescopic direction of the telescopic shell, and the telescopic shell is suitable for horizontally telescoping inside the support frame through the slide rails.

3. The safety escape device for pressurized buildings according to claim 2 is characterized in that: The retractable shell includes a side door panel located in the support frame and arranged parallel to and opposite to the support connecting plate, a connecting rod assembly horizontally connected between the support connecting plate and the side door panel, a bottom plate connected to the bottom of the support frame, and a fireproof retractable curtain connected between the support connecting plate and the outer frame of the side door panel; the fireproof retractable curtain is an inverted U-shaped structure, and the bottom of the fireproof retractable curtain is sealed and connected to the outer frame of the bottom plate through the corresponding side slide rails, and the top of the fireproof retractable curtain is connected through the corresponding side slide rails, two connecting rod assemblies are horizontally, parallelly and symmetrically connected in the width direction of the support frame and the inside of the fireproof retractable curtain, and the connecting rod assembly is suitable for applying a force on both sides of the side door panel due to telescopic deformation, so that the side door panel moves horizontally along the slide rails, thereby changing the size of the internal accommodating space surrounded by the support connecting plate, the fireproof retractable curtain, the side door panel and the bottom plate.

4. The safety escape device for pressurized buildings according to claim 3 is characterized in that: The fixing assembly comprises: A mounting ring, sleeved outside the bolt circle of the side door plate; A side panel vertically connected to the inner side of the bottom of the side door panel; A connecting rod assembly includes two sets of symmetrical upper connecting rods and lower connecting rods arranged at the top and bottom of one side wall of the side plate; A support seat is arranged at one end of the connecting rod assembly away from the side plate; the two upper connecting rods at the top end of the side plate are connected to the top of the support seat through a pin shaft, and the two lower connecting rods at the bottom end of the side plate are connected to the middle part of the support seat through a pin shaft; An electric telescopic rod is arranged between the support seat and the side plate, and the bottom end of the electric telescopic rod is connected to the middle of the bottom of one side wall of the side plate, and the top end of the electric telescopic rod is connected to the top of the support seat through the pin shaft at the top; The support seat comprises a pillar and a chassis connected to the bottom of the pillar, and the chassis is evenly provided with clamping pillars.

5. The safety escape device for pressurized buildings according to claim 4 is characterized in that: The first sealed door includes a door frame sealed and embedded on both sides of the opening of the supporting connecting plate, a door panel hinged on one side of the door frame through a hinge pin mechanism, and a locking structure arranged in the door panel, wherein the locking structure is suitable for being clamped between the door panel and the door frame when the door panel is covered in the door frame.

6. The safety escape device for pressurized buildings according to claim 5 is characterized in that: The door panel includes a door bottom plate suitable for being accommodated on the inner stop of the door frame, a support frame for supporting and installing the locking structure, and a cover plate suitable for covering the outer frame of the door bottom plate. The support frame and the locking structure are located in an internal space formed by the combination of the door bottom plate and the cover plate.

7. The safety escape device for pressurized buildings according to claim 6 is characterized in that: The locking structure includes two support plates symmetrically mounted on the support frame, a rack structure vertically limited on the support plate, and a gear shaft structure meshing with the rack structure, wherein the gear shaft structure is suitable for driving the rack structure to move up and down; The support plate comprises an upper connecting plate and a lower connecting plate arranged in parallel and spaced relation, an upper limit groove is provided on an edge of one side of the upper connecting plate close to the support frame, and a lower limit groove is provided on the lower connecting plate opposite to the upper limit groove; The rack structure comprises a first side rack and a second side rack which are vertically parallel and symmetrically arranged in an anti-symmetrical manner, and a first upper latch pin and a first lower latch pin are respectively arranged at ends of the first side rack and the second side rack which are away from each other; The gear shaft structure includes a rotating shaft horizontally passing through both sides of the door panel, a gear and a bearing connected to the rotating shaft, a hand wheel connected to the end of the rotating shaft, a connecting rod connected to the second side rack on the side away from the loose-leaf pin mechanism, and a side latch hinged at the end of the connecting rod. The rotating shaft is rotatably connected between the first side rack and the second side rack through the bearing support, and both sides of the gear are respectively meshed and transmission-connected with the first side rack and the second side rack; The two connecting rods are respectively installed at the top and middle of the second side rack away from the first side rack, and the end of the top connecting rod is hingedly connected to the upper side pin, and the end of the middle connecting rod is hingedly connected to the lower side pin, and the middle connecting rod is also located below the lower connecting plate; When the rotating shaft is driven to rotate by the hand wheel and the door panel is covered on the door frame, the first upper latch pin is suitable for being inserted into the top socket of the door frame driven by the first side rack, the first lower latch pin is suitable for being inserted into the bottom socket of the door frame driven by the second side rack, and the upper side pin and the lower side pin are suitable for being inserted into the side sockets of the door frame driven by the second side rack.

8. The safety escape device for pressurized buildings according to claim 3 is characterized in that: The pressure control system includes a pressure controller, a pressure relief valve installed on the wall of the pressurized building, a carbon dioxide concentration detector and an oxygen concentration detector located in the pressurized building, a blower installed outside the pressurized building, and a pressure balance indicator installed in the escape telescopic passage, and the pressure controller is electrically connected to the pressure relief valve, the carbon dioxide concentration detector, the oxygen concentration detector, the blower and the pressure balance indicator respectively.

9. The safety escape device for pressurized buildings according to claim 8, characterized in that: The second sealing door has the same structure as the first sealing door, and a fireproof rolling shutter door is also provided inside the escape window of the pressurized building.

10. A safe escape method for a pressurized building, based on the safe escape device for a pressurized building according to any one of claims 1 to 9, characterized in that: The escape method comprises the steps of: Step S 100 : The escape telescopic passage is sealed and connected to the escape window of the pressurized building through the supporting connecting plate, and the carbon dioxide content and oxygen content in the air inside the pressurized building are monitored in real time through the fire alarm system; Step S 200 : When the fire alarm system detects a fire inside the pressurized building, the pressure control system pressurizes the escape telescopic passage, so that the internal air pressure between the pressurized building and the escape telescopic passage is quickly balanced; Step S 300 : When the air pressure inside the escape telescopic passage is close to the air pressure inside the pressurized building, the fire shutter door and the first sealing door on the supporting connecting plate are opened to allow the escapees to evacuate quickly into the escape telescopic passage, and the internal accommodation space of the escape telescopic passage is changed according to the number of escapees; Step S 400 : Close the first sealing door on the supporting connecting plate, and continue to pressurize the escape telescopic channel through the pressure control system so that the air pressure in the escape telescopic channel meets the use needs of the escapers; Step S 500 : When the escapee needs to further evacuate the escape telescopic passage, the pressure control system releases the pressure in the escape telescopic passage to open the second sealing door, and then escapes through the stairs.

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