Platform slow release device and escape platform

Abstract

The embodiment of the utility model provides a platform slow release device and an escape platform, and relates to the technical field of slow release devices. One end of the connecting part is connected with the movable end of the bearing platform; the running part is linked with the connecting part; the operation part is configured to be driven by the connecting part to do first movement when the movable end of the bearing platform is opened towards the outdoor side; and the slow release part is arranged on the fixed frame or the vertical surface of the building, and the slow release part is configured to apply opposite force for hindering the first movement to the operation part. By arranging the connecting part connected with the bearing platform and the operation part linked with the connecting part, the slow release part arranged in the fixed frame is adopted to slow down the movement of the operation part, so that the purpose of reducing the unfolding speed of the bearing platform is achieved, and the safety and stability of the unfolding process of the bearing platform are ensured.

Description

[0001] This application claims priority to Chinese Patent Application No. 202420117357.7, filed on January 17, 2024, entitled "An Escape Platform and Descent Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of sustained-release device technology, and more particularly to a platform sustained-release device and an escape platform. Background Technology

[0003] In dangerous situations in high-rise buildings, people inside are often unable to escape quickly. This is especially true in scenarios such as fires, when elevators are unusable or unsuitable for use, and safety passages (stairs) have limited speed and capacity, which greatly delays people's escape and can easily create serious safety hazards.

[0004] Escape platforms are typically installed in building openings designed for people to escape in emergency situations, allowing for rapid evacuation. When not in use, escape platforms are usually folded and concealed within the wall, locked to the frame installed in the building opening. In an emergency, the escape platform can be deployed using a manual unlocking device.

[0005] Because the lower frame of the escape platform is hinged to the lower frame of the fixed frame, when the platform rotates to open, the center of gravity also shifts to the opening side. Due to the shift in the center of gravity and the effect of gravity, the platform will descend rapidly under the action of gravitational acceleration. The impact caused by the excessively fast descent speed will damage the connecting parts of the platform and the platform itself, and will also bring safety hazards to the escape platform. Utility Model Content

[0006] This application provides a platform release device and an escape platform to solve the problem that existing escape platforms have a large impact force due to excessively fast platform deployment speed.

[0007] In a first aspect, this application provides a platform release device applied to an escape platform including a support platform and a fixed frame, comprising:

[0008] Connecting part; one end of the connecting part is connected to the movable end of the supporting platform;

[0009] An operating unit that is linked to the connecting part; the operating unit is configured such that when the movable end of the bearing platform opens to the outside, it is driven by the connecting part to perform a first movement.

[0010] A release element disposed on the fixed frame or the building facade is configured to apply a reverse force to the running part to impede the first movement.

[0011] In some feasible embodiments, the operating unit includes:

[0012] A fixing seat fixed to the fixing frame or the building facade;

[0013] A rotating shaft is rotatably connected to the fixed base; the rotating shaft passes through the fixed base, and a turntable is connected to one side of the shaft that extends out of the fixed base;

[0014] The connecting part is a cable, one end of which is connected to the movable end of the bearing platform, and the other end is coiled around the turntable.

[0015] In some feasible embodiments, at least a portion of the outer side of the shaft is provided with external threads;

[0016] The sustained-release portion includes:

[0017] A friction pad that is slidably disposed on the outside of the rotating shaft and fixed to the fixed base;

[0018] A movable member is provided on the outside of the rotating shaft and screwed to the external thread; the movable member is provided with a first elastic element and a friction part in sequence in the direction of the friction plate; the friction part is located between the friction plate and the movable member, and is slidably disposed on the outside of the rotating shaft;

[0019] A guide member is slidably connected to the outside of the moving member; the guide member is laid along the moving member toward the friction plate; the moving member is configured such that when the rotating shaft makes a first movement, it moves toward the friction plate under the action of the guide member.

[0020] In some feasible embodiments, a guide block is connected to the outer side of the rotating shaft via a second elastic element;

[0021] The sustained-release portion includes:

[0022] Two friction parts are provided on the outside of the rotating shaft and the guide block; the two friction parts are provided with friction blocks inwardly, and the friction blocks slide in contact with the guide block from at least two opposite directions;

[0023] When the shaft is not rotating, there is a preset distance between the end of the guide block and the friction part.

[0024] In some feasible embodiments, the guide blocks are provided in multiples and are evenly distributed on the axial side and / or circumferential side of the rotating shaft.

[0025] In some feasible embodiments, a centrifugal section is connected to the outer side of the rotating shaft;

[0026] The sustained-release portion includes:

[0027] A friction component is located on the outside of the rotating shaft and fixed to the fixed base;

[0028] A guide component is provided on the outside of the rotating shaft;

[0029] A friction plate is provided on the outside of the rotating shaft and slides along the direction restricted by the guide; the friction plate is located between the friction part and the centrifugal part; the outer edge of the friction plate is close to the centrifugal part, and at least one extrusion block is provided in the space enclosed by the friction plate and the centrifugal part;

[0030] The centrifugal section is configured such that when it makes a first movement with the rotating shaft, the extrusion block makes a centrifugal movement and pushes the friction plate toward the friction part until the friction plate abuts against the friction part.

[0031] The sustained-release portion includes:

[0032] A guide component connected to the rotating shaft; the guide component is a centrifugal guide component;

[0033] The extrusion block is slidably connected to the guide member;

[0034] A friction component fixed to the fixed base;

[0035] A friction pad is disposed between the guide member and the friction part, and the friction surfaces of the friction pad and the friction part are arranged opposite to each other;

[0036] The extrusion block is configured such that when the rotating shaft makes a first movement, the extrusion block makes a centrifugal movement and pushes the friction plate to move in the direction of the first friction part until the friction plate abuts against the first friction part.

[0037] In some feasible embodiments, the fixing base is a U-shaped base; the turntable is located outside the U-shaped base; and the slow-release part is located inside the U-shaped base.

[0038] In some feasible embodiments, the connecting part is a cable; the running part is a guide wheel disposed on the fixed frame; one end of the cable is connected to the movable end of the bearing platform, and the other end is connected to the slow-release part after passing through the guide wheel.

[0039] In some feasible embodiments, the release unit is at least one of an elastic damping device, a pneumatic component, a hydraulic component, and a counterweight.

[0040] In some feasible embodiments, the sustained-release portion includes:

[0041] The trough is fixed to the outdoor side of the fixed frame and has a preset distance from the fixed frame.

[0042] A third elastic member is located inside the groove body; the third elastic member has an inner cavity formed in the middle, and the width of the inner cavity gradually decreases along the direction from the opening of the groove body to the inside;

[0043] A pressure rod abuts against the inner cavity of the third elastic element; the end of the pressure rod away from the third elastic element slides against the bearing platform.

[0044] Secondly, this application provides an escape platform, including: a support platform and a fixed frame;

[0045] The fixed frame is set in an opening in the building wall, and the supporting platform is movably connected to the fixed frame;

[0046] When the support platform is in the closed state, the support platform is engaged within the fixed frame to seal the opening;

[0047] When the support platform is in the open state, it moves to the outside of the building wall to form a platform for escapees to stay on;

[0048] It also includes the platform sustained-release device described in the first aspect.

[0049] This application provides a platform slow-release device and an escape platform. By setting a connecting part connected to the carrying platform and a running part linked to the connecting part, the movement of the running part is slowed down by the slow-release part set in the fixed frame, thereby reducing the deployment speed of the carrying platform and ensuring the safety and stability of the carrying platform deployment process. Attached Figure Description

[0050] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a first schematic diagram of an escape platform provided in an embodiment of this application;

[0052] Figure 2 This is a second schematic diagram of an escape platform provided in an embodiment of this application;

[0053] Figure 3 A third schematic diagram of an escape platform provided in an embodiment of this application;

[0054] Figure 4 A fourth schematic diagram of an escape platform provided in an embodiment of this application;

[0055] Figure 5 A fifth schematic diagram of an escape platform provided in an embodiment of this application;

[0056] Figure 6 A sixth schematic diagram of an escape platform provided in an embodiment of this application;

[0057] Figure 7 A seventh schematic diagram of an escape platform provided in this application embodiment;

[0058] Figure 8 A schematic diagram of a platform sustained-release device provided in the first embodiment of this application;

[0059] Figure 9 A schematic diagram of the operating section and the sustained-release section in a platform sustained-release device provided in this application embodiment;

[0060] Figure 10 A schematic diagram of the operating section and the sustained-release section in a platform sustained-release device provided in this application embodiment, under another embodiment;

[0061] Figure 11 A schematic diagram of the operating section and the sustained-release section in a platform sustained-release device provided in this application embodiment, in yet another embodiment;

[0062] Figure 12 A schematic diagram of the operating section and the sustained-release section in a platform sustained-release device provided in this application embodiment, in yet another embodiment;

[0063] Figure 13 A schematic diagram of a platform sustained-release device provided in this application embodiment under a second embodiment;

[0064] Figure 14 A first state diagram of a platform sustained-release device provided in the embodiments of this application under a third embodiment;

[0065] Figure 15 A second state diagram of a platform sustained-release device provided in the embodiments of this application under a third embodiment;

[0066] Figure 16 This is a schematic diagram of the sustained-release section in a platform sustained-release device provided in this application embodiment, in yet another embodiment.

[0067] In the picture:

[0068] 1-Fixed frame; 11-Side frame; 111-First receiving space; 112-Second receiving space; 12-Second sealing body; 13-Second locking part; 131-Hinged structure; 2-Manual switch; 21-Protective structure; 3-Restoration device; 4-Bearing platform; 41-First sealing body; 42-First locking part; 5-Angled pull component; 6-Guardrail; 7-Descending device; 71-Descending cable; 72-Connecting end; 8-Connecting part; 9-Fireproof and heat-insulating curtain;

[0069] 410 - Connecting part; 420 - Running part; 421 - Fixed seat; 422 - Rotating shaft; 423 - Turntable; 424 - Guide block; 425 - Second elastic element; 430 - Slow-release part; 431 - Friction plate; 432 - Moving part; 433 - First elastic element; 434 - Friction part one; 435 - Guide element; 436 - Friction part two; 437 - Friction block; 438 - Centrifugal part; 439 - Extrusion block; 440 - Tank; 441 - Third elastic element; 442 - Pressure rod. Detailed Implementation

[0070] An escape platform is a structure installed on each floor of a building that can be opened to form an escape platform on the exterior wall surface in the event of a dangerous situation. Existing buildings typically have casement, sliding, top-hung, and bottom-hung windows for lighting and ventilation. However, because the opening sashes are small and the opening area is small, they cannot form a platform for people to gather when opened, which greatly reduces the chances of trapped people escaping.

[0071] The escape platform involved in this application can be set in a location on each floor where escape is convenient. When closed, the platform can be part of the building itself and can also be used to realize functions such as window lighting, ventilation and smoke exhaust. When opened, it can form a platform on the exterior of the building with a certain load-bearing capacity. People can gather on the platform to wait for rescue or use the descent device to descend to a safe location to escape danger.

[0072] like Figures 1 to 7 The escape platform provided in this embodiment is installed in an opening in the building, while ensuring that the location of the escape platform meets the requirements of the building's facade. The escape platform includes a support platform 4 and a fixed frame 1. The fixed frame 1 is set in the opening in the building wall. The support platform 4 and the fixed frame 1 are movably connected. A manual switch 2 is provided on the indoor side of the fixed frame 1. The manual switch 2 is provided with a protective structure 21. Under normal circumstances, the manual switch 2 is sealed inside the protective structure 21 to prevent accidental contact. When in use, the manual switch 2 can be operated by opening or removing the protective structure 21.

[0073] The support platform 4 is provided with a first sealing body 41 inside its four-sided frame. When the support platform 4 is in the closed state, the first sealing body 41 is squeezed and sealed with the second sealing body 12 provided inside the fixed frame 1. The support platform 4 is provided with a guardrail 6. The guardrail 6 is located at the edge of the support platform 4 and is foldably hidden in the first receiving space 111 of the two side frames 11 of the fixed frame 1, and foldably hidden in the second receiving space 112 of the upper frame of the fixed frame.

[0074] The inclined pull member 5 is disposed between the two sides of the bearing platform 4 and the two side frames 11 of the fixed frame 1, and the inclined pull member 5 is hidden in the first receiving space 111 of the two side frames 11 of the fixed frame 1; the frame of the bearing platform 4 is provided with a first locking part 42, and the first locking part 42 and the second locking part 13 provided on the frame of the fixed frame form a locking state.

[0075] After the support platform 4 is opened by the manual switch 2, the support platform 4 is connected to the lower frame of the fixed frame 1, so that the support platform 4 rotates to the outside and stops at the set position. Specifically, the connection and rotation can be achieved through the hinge structure 131. When the support platform 4 is in the open state, people need to gather on the support platform 4 when escaping. The support platform 4 should have a certain load-bearing capacity.

[0076] To ensure the safety of those escaping, the support platform 4 forms a cantilever structure with the wall after it is opened. The higher the escape opening is set and the longer the cantilever of the cantilever structure, the less favorable it is for the support platform 4 to bear the load. Therefore, after the support platform 4 is opened, inclined tie members 5 are provided on both sides of the fixed frame 1 to connect with the support platform 4, so as to enhance the load-bearing strength of the support platform 4.

[0077] The inclined pull component 5 can be a rod-like structure with a limiting device, which allows the inclined pull component 5 to move in a specified direction when the bearing platform 4 returns to the closed state, and to be located within the first accommodating space provided by the bearing platform 4 or the fixed frame 1. The inclined pull component 5 can also be a telescopic component, which extends or retracts to a set position in a set direction when the bearing platform 4 is open, and is located within the accommodating space of the bearing platform 4 or the fixed frame 1 when the bearing platform 4 returns to the closed state. The inclined pull component 5 can also be a rope or chain-like component, which extends to a set position and stops moving when the bearing platform 4 is in the open state. One end of the rope or chain-like component can be provided with a counterweight structure or friction structure to enable the bearing platform 4 to open slowly.

[0078] At this point, the support platform 4 is equipped with an escape function. However, to ensure that escapers on the support platform 4 do not fall, a guardrail 6 can be installed on the side of the support platform 4 that is not connected to the wall when the support platform 4 is in the open state. When the support platform 4 is opened, the guardrail 6 automatically rises to improve the safety of the support platform 4. A spring-loaded pneumatic telescopic device is installed between the support platform 4 and the guardrail 6. During the opening process of the support platform 4, the guardrail 6 rises to a set height and locks under the pulling or pushing force of the spring-loaded pneumatic telescopic device. The guardrail of the support platform has an opening for escapers to use. After putting on escape equipment, escapers can safely escape through the opening without having to climb over the guardrail. The number and location of the openings can be set according to usage. A railing is installed at the opening location. Before using the opening, the railing must be manually opened for escape.

[0079] The fixed frame 1 is also equipped with a connecting part 8 for a backpack-type descent device. The escapee puts on the escape backpack, and the descent cable of the backpack-type descent device connects to the connecting part 8, enabling the backpack-type descent device to rise and fall. Specifically, after the escapee puts on the backpack-type descent device, the connecting end of the descent cable connects to the connecting end of the connecting part 8. In actual use, the backpack-type descent device descends slowly under a certain gravity through a friction part. The descent cable is stored in a winch connected to the friction part. The entire component is installed inside the backpack, with the connecting end of the descent cable extending out of the backpack and connecting to the connecting part 8 on the fixed frame 1. The escapee can escape after securing the backpack-type descent device to their body with a safety belt. The friction force of the friction part is adjustable, allowing for changes in the descent speed. The backpack-type descent device can be equipped with a descent stop device, which can be manually controlled. The descent stop device can increase the friction force by squeezing the friction part through a compression structure, stopping the descent when the friction force exceeds the gravity; or it can increase the friction force by squeezing the descent cable through a compression structure, stopping the descent when the friction force exceeds the gravity.

[0080] The escape platform is also equipped with a recovery device 3, which is set on the fixed frame 1. After the carrying platform 4 is opened to complete the escape mission, check the various functions and components of the carrying platform 4. If there is no damage to the various functions and components of the carrying platform 4, the recovery device 3 can be used to manually restore the carrying platform 4 to the closed state from the indoor side, and lock it through the locking structure set on the fixed frame 1 and the carrying platform 4. After the carrying platform 4 is restored to the initial state, the carrying platform 4 can still be reused.

[0081] Specifically, a rope-like component can be used to connect the recovery device 3 and the support platform 4. One end of the rope-like component is connected to the support platform 4, and the other end is connected to the rope wheel of the recovery device 3. The rope wheel is controlled by the unidirectional movement principle of the pawl. A tool corresponding to the pawl can be used to rotate the rope wheel, causing the rope-like component to wrap around the rope wheel and pull the support platform 4 back to its initial state. Alternatively, a chain-like component can be used. The chain cooperates with the sprocket. By rotating the sprocket, the chain is contracted. The contracted chain enters the set receiving space, pulling the support platform 4 back to its initial closed state and locking it. Alternatively, a screw structure can be used to achieve recovery. Rotating the screw causes the screw nut connected to the screw to move linearly. The screw nut rope-like component, chain component, or connecting rod component is connected to the escape platform. The screw nut moves in a set direction to restore the escape platform to its initial state and lock it.

[0082] The escape platform can also be equipped with a descent device 7, and escape can be achieved through the descent device 7. When using it, the escaper needs to wear an escape safety harness. After wearing it, the safety harness is connected to the descent cable 71 of the descent device 7, and can be slowly descended to a safe position or the ground to escape. The descent device 7 is installed on the indoor side wall, and the number can be set to multiple. The connecting end for connecting with the safety harness worn by the escaper extends to the outdoor side, so that the escaper can quickly escape after wearing the safety harness and connecting with the descent device.

[0083] The descent device 7 can also be installed on the fixed frame 1, and the number can be set to multiple. The connection end 72 of the descent device 7 installed on the fixed frame 1 also extends to the outside of the room, which facilitates the rapid escape of the escaped personnel.

[0084] The descent device 7 can also be set separately from the support platform 4. For example, a first connecting part and a third locking part connected to the descent device 7 can be provided on the fixed frame 1 or the support platform 4, and the number of the first connecting part and the third locking part is at least one. After the support platform 4 is opened, the escapee fixes the descent device 7 to the first connecting part and locks it through the third locking part. After the escapee puts on the safety harness, the safety harness will be connected to the connecting end 72 of the descent device. It should be noted that the number of the first connecting part and the third locking part is set to multiple. In actual use, it is not necessary to use multiple first connecting parts and third locking parts at the same time to achieve the escape function. Instead, one escapee or one escapee only needs to use one pair of first connecting parts and third locking parts. Setting multiple first connecting parts and third locking parts makes it convenient for the escapee to fix the safety harness and also makes it convenient for multiple escapees to carry out escape actions at the same time.

[0085] The descent device 7 can also be configured as a reciprocating structure. For example, each descent device 7 is provided with two second connecting parts. The two second connecting parts cannot be used at the same time. When escaping, the first person to escape uses one of the second connecting parts to descend to a safe location or the ground and then takes off the escape harness. At this time, the person waiting to escape on the carrying platform 4 can use the other second connecting part to descend. When the second person to escape descends, the connecting end 72 used by the first person to escape, along with the escape harness, is retrieved to the initial position on the carrying platform 4 and can be used by the person to escape again. In this way, during the subsequent escape process, there is no need to perform repeated fixing work. After putting on the escape harness, the person can quickly escape from the dangerous environment.

[0086] The escape platform may also be equipped with a fireproof and heat-insulating curtain 9. The fireproof and heat-insulating curtain 9 is set on the indoor side of the upper frame of the fixed frame 1, and the guide part of the fireproof and heat-insulating curtain 9 is set on the indoor side of the side frame 11 of the fixed frame 1. After the escape personnel reach the carrying platform 4, they can manually pull down the fireproof and heat-insulating curtain 9, thereby forming a partition and sealing between the carrying platform 4 and the indoor side of the building. At this time, if there are still personnel in the room who have not escaped to the carrying platform 4, they can also open the fireproof and heat-insulating curtain 9 from the indoor side. After reaching the carrying platform 4, they can close the fireproof and heat-insulating curtain 9 again to form a partition layer, making the space of the carrying platform 4 safer and gaining more escape time.

[0087] The fireproof and heat-insulating curtain 9 retracts under the axis of the accommodating space by rotating with spring force. When the downward pulling force is greater than the spring force, the heat-insulating curtain moves downward along the guide sections on both sides and moves to the set position. The set position is equipped with a locking structure, which can be opened from the indoor and outdoor sides, so that people who have not yet escaped to the escape platform can continue to hide and escape.

[0088] It should be noted that the slow descent device 7 provided in this application embodiment can also be used independently and is not limited to architectural scenarios, but can also be used in other scenarios with height differences, such as tower cranes, mountains, bridges, mines, or ships.

[0089] As can be seen from the aforementioned technical solution, when the operator manually operates the manual switch 2 to unlock the carrier platform 4 from the fixed frame 1, the carrier platform 4 can rotate to the outdoor side and stop at the set position. As the rotation process proceeds, the center of gravity of the carrier platform 4 shifts outward, which will cause the rotation speed of the carrier platform 4 to gradually increase, which will increase the impact force on the connecting structure and the carrier platform 4 itself. In order to avoid damage to the carrier platform 4 and the connecting structure, this application provides a platform release device to solve the aforementioned problem.

[0090] See Figure 8 and Figure 9 This application provides a platform-based sustained-release device, specifically comprising:

[0091] Connecting part 410; one end of the connecting part 410 is connected to the movable end of the supporting platform 4; wherein, the movable end of the supporting platform 4 refers to the end away from the hinge position with the fixed frame, that is, the end that unfolds outward; as the supporting platform 4 unfolds outward, it will pull the connecting part 410 outward along the unfolding direction. For the connecting part 410, it will move in angle and length due to the pull of the supporting platform 4, thereby driving the running part 420 at the other end to make corresponding movements.

[0092] The running part 420 is linked to the connecting part 410. The running part 420 is configured such that when the movable end of the bearing platform 4 opens to the outside, it is driven by the connecting part 410 to perform a first movement. The first movement can be a rotational movement or a movement along a straight line or curve. It should be noted that in this embodiment, the linkage between the connecting part 410 and the running part 420 can take many forms. For example, when the connecting part 410 is a rope-like cable and the running part 420 is a turntable or roller, when the connecting part 410 is pulled, it can drive the running part 420 to rotate. Therefore, the simultaneous pulling and rotation are called linkage. It should be understood that when the connecting part 410 and the running part 420 are different structures, the linkage between them can be different. In this application, one such example is given, in which case the connecting part 410 can drive the running part 420 to perform the first movement.

[0093] A release element 430, disposed on the fixed frame 1 or the building facade, is configured to apply a counterforce to the running part 420 to impede the first movement. In this application, the release element 430 can be disposed at any position on the fixed frame 1, such as on the upper side, side, or bottom. Depending on the placement, the release element 430 can also be configured with different structures. When the release element 430 provides a counterforce to the running part 420 to impede the first movement, it can slow down the speed of the first movement. Simultaneously, due to the linkage between the running part 420 and the connecting part 410, it also slows down the speed at which the connecting part 410 is pulled out. Therefore, by providing the release element 430, this application can slow down the speed or acceleration of the outward unfolding of the support platform 4, reducing the impact force on the connecting components during the unfolding of the support platform 4.

[0094] As can be seen from the above technical solution, this application sets up a connecting part 410 connected to the support platform 4 and a running part 420 that is linked to the connecting part 410. At the same time, it uses a slow-release part 430 set in the fixed frame 1 to slow down the movement of the running part 420, thereby achieving the purpose of reducing the deployment speed of the support platform 4 and ensuring the safety and stability of the deployment process of the support platform 4.

[0095] In practical applications, the connecting part 410, the running part 420, and the slow-release part 430 can have various structural forms. The following are specific examples of several possible implementation methods:

[0096] Depend on Figure 9 It is understood that, in some feasible embodiments, the operating unit 420 includes:

[0097] A fixing seat 421 is fixed to the fixing frame 1 or the building facade; the fixing seat 421 can be set on the top or side of the fixing frame 1 to support the running part 420 and other components of the release part 430.

[0098] A rotating shaft 422 is rotatably connected to the fixed base 421; the rotating shaft 422 passes through the fixed base 421, and a turntable 423 is connected to one side extending out of the fixed base 421;

[0099] The connecting part 410 is a cable, one end of which is connected to the movable end of the bearing platform 4, and the other end is coiled around the turntable 423.

[0100] In this embodiment, the rotating shaft 422 can rotate freely relative to the fixed base 421; the length of the cable wound on the turntable 423 should be sufficient to allow the bearing platform 4 to be fully extended (generally considered to be extended to the horizontal direction). When the cable is pulled by the bearing platform 4, it will drive the turntable 423 to rotate in one direction, thereby driving the rotating shaft 422 to rotate in the same direction; conversely, when the bearing platform 4 is retracted, the cable can be rotated by the turntable 423 in the opposite direction, and then wound on the turntable 423.

[0101] Corresponding to the operating unit 420 of the above structure, in one embodiment, the structure of the corresponding sustained-release unit 430 includes:

[0102] The friction plate 431 is slidably disposed on the outside of the rotating shaft 422 and fixed to the fixed base 421; it should be noted that the position of the friction plate 431 is not limited to Figure 9 The shown fixture is located on the right side of the mounting base, and it can also be connected to the left side wall of the mounting base 421.

[0103] At this time, at least a portion of the outer side of the rotating shaft 422 is provided with external threads; the part where the external threads are provided may be located in the middle of the rotating shaft 422.

[0104] The slow-release section 430 also includes a movable member 432 disposed on the outside of the rotating shaft 422 and threaded to the external thread; the movable member 432 is provided with a first elastic member 433 and a friction part 434 in sequence in the direction of the friction plate 431; the friction part 434 is located between the friction plate 431 and the movable member 432 and is slidably disposed on the outside of the rotating shaft 422, and the friction part 434 can rotate together with the rotating shaft 422; when the first elastic member 433 is in an unloaded state, the friction part 434 can abut against the friction plate 431 or have a certain distance between it and the friction plate 431; in this embodiment, the friction force generated when the friction plate 431 and the friction part 434 rotate relative to each other is used as the force that opposes the first movement.

[0105] The connection structure between the friction unit 434 and the rotating shaft 422 can be limited to one type. For example, a groove can be provided on the side of the rotating shaft 422, and a protrusion that can be inserted into the groove can be provided at the corresponding position of the friction unit 434. The protrusion can slide along the groove. This achieves both the rotation of the rotating shaft 422 driving the friction unit 434 to rotate and the sliding of the friction unit 434 along the axial direction of the rotating shaft 422 on the surface of the rotating shaft 422. Alternatively, a strip-shaped protrusion can be provided on the outside of the rotating shaft 422, and a groove can be provided at the corresponding position of the friction unit 434 to achieve the same effect. This will not be elaborated here.

[0106] The slow-release section 430 further includes a guide 435 slidably connected to the outer side of the movable member 432; the guide 435 is laid along the movable member 432 toward the friction plate 431; the movable member 432 is configured such that when the rotating shaft 422 makes a first movement, it moves toward the friction plate under the action of the guide 435. Specifically, due to the restriction of the guide 435, when the rotating shaft 422 rotates, the movable member 432, which is threaded with the external thread of the rotating shaft 422, does not rotate accordingly, but moves toward the friction plate 431 due to the restriction of the guide 435. Figure 9 (Moves from center to right), thereby compressing the first elastic element 433, causing the first elastic element 433 to store elastic energy. At the same time, since the other end of the first elastic element 433 abuts against the friction part 434, the elastic force of the first elastic element 433 will be applied to the friction part 434, thereby increasing the pressure on the contact surface between the friction part 434 and the friction plate 431. The greater the pressure, the greater the frictional resistance of the relative rotation between the two, thereby achieving the effect of the bearing platform 4 expanding outward more and the slow-release effect stronger.

[0107] As can be seen from the above embodiments, when the bearing platform 4 unfolds outward, it pulls the connecting part 410 outward, and at the same time drives the turntable 423 and the rotating shaft 422 to rotate. The rotating shaft 422 drives the friction part 434 to rotate. Since the rotating friction part 434 and the fixed friction plate 431 generate relative frictional resistance, the rotation speed of the rotating shaft 422 (i.e. the speed at which the connecting part 410 is pulled out) is slowed down. As the connecting part 410 is gradually pulled out, the rotation of the rotating shaft 422 causes the moving part 432 to gradually move towards the friction plate 431, thereby compressing the first elastic member 433 and gradually increasing the frictional force between the friction part 434 and the friction plate 431, thus increasing the slow-release effect.

[0108] See Figure 10 Corresponding to the operating unit 420 of the above structure, in another embodiment, the structure of the corresponding sustained-release unit 430 includes:

[0109] The sustained-release portion includes:

[0110] Friction part 436 is provided outside the rotating shaft 422; a guide block 424 is connected to the outside of the rotating shaft 422 by a second elastic element 425; friction part 436 is also provided outside the guide block 424; wherein, the elastic direction of the second elastic element 425 is the direction of the centrifugal force of the guide block 424 rotating along the rotating shaft 422;

[0111] The guide block 424 is connected to at least one friction block 437, and the friction block 437 abuts against the friction part 436 along the centrifugal force direction;

[0112] It should be noted that since the friction part 436 is a ring structure and the guide block 424 can rotate circumferentially along the shaft 422, in order for the outer side of the friction block 437 to always be in contact with the inner side of the friction part 436 to generate frictional resistance, the outer side of the friction block 437 should also be set as an arc-shaped surface corresponding to the shape of the friction part 436.

[0113] In this embodiment, the guide block 424 is connected to the periphery of the rotating shaft 422 via the second elastic element 425. When the rotating shaft 422 rotates, the guide block 424 rotates along with the rotating shaft 422, thereby driving the friction block 437 to rotate. The friction between the friction block 437 and the friction part 436 provides a reverse force that resists the rotation of the rotating shaft 422, thereby providing a slow-release effect. As the rotational speed of the rotating shaft 422 increases, under the drive of centrifugal force, the guide block 424 will drive the friction block 437 to increase the pressure on the friction part 436, thereby increasing the friction between the friction block 437 and the friction part 436, further increasing the slow-release force, achieving the effect that the higher the rotational speed of the rotating shaft 422, the better the slow-release effect.

[0114] Furthermore, in some embodiments, multiple guide blocks 424 may be provided to further enhance the friction mitigation effect, for example... Figure 9 As shown, multiple guide blocks 424 can be evenly distributed along the axial side (left-right direction) of the rotating shaft 422, or multiple guide blocks 424 can be evenly distributed along the circumference (up-down-backward direction) of the rotating shaft 422, or they can be arranged on both the circumference and the circumference simultaneously; there is no limitation here. Similarly, multiple friction blocks 437 can be provided for each guide block 424, for example, one on each of the left and right sides, or multiple in a ring, etc.

[0115] Further, see Figure 11 Corresponding to the operating unit 420 of the above structure, in another embodiment, the structure of the corresponding sustained-release unit 430 includes:

[0116] A friction part 434 is provided on the outside of the rotating shaft 422 and fixed to the fixed base 421;

[0117] At this time, a guide 435 is provided on the outer side of the rotating shaft 422; a centrifugal part 438 is also connected to the outer side of the rotating shaft 422.

[0118] A friction plate 431 is provided outside the rotating shaft 422 and slides along the direction restricted by the guide member 435. In this embodiment, the guide member 435 prevents the friction plate 431 from rotating relative to the rotating shaft 422, allowing it to move only along the length of the rotating shaft 422. The friction plate 431 is located between the friction part 434 and the centrifugal part 438. The outer edge of the friction plate 431 slides against the centrifugal part 438. Here, sliding contact means that the friction plate 431 itself does not rotate, while the centrifugal part 438 can move with the rotating shaft. 422 rotates, and if the outer edge of the friction plate 431 comes into contact with the inner wall of the centrifugal part 438, it can be in sliding contact. At the same time, if the two are not in close contact, the distance between them should be such that the extrusion block 439 cannot be dislodged from the gap. At least one extrusion block 439 is provided in the space enclosed by the friction plate 431 and the centrifugal part 438. When the centrifugal part 439 starts to rotate, the extrusion block 439 will gradually move to both sides of the centrifugal part 438 under the action of centrifugal force and abut against the friction plate 431 along the arc direction of the centrifugal part 438.

[0119] The centrifugal section 438 is configured such that when it moves for the first time with the rotating shaft 422, the pressing block 439 moves centrifugally and pushes the friction plate 431 toward the friction part 434 until the friction plate 431 abuts against the friction part 434.

[0120] In this embodiment, the working principle of the slow-release unit 430 is as follows: When the bearing platform 4 is unlocked, it moves in the opening direction, driving the cable to move. The cable drives the turntable 423 to rotate, the turntable 423 drives the rotating shaft 422 to rotate, and the rotating shaft 422 drives the centrifugal part 438 to rotate. Under the rotational motion of the centrifugal part 438, the squeezing block 439 opens and moves along the inner surface of the centrifugal part 438 towards the friction plate 431. When the rotational speed reaches a certain point, the squeezing block 439 begins to contact the friction plate 431 and begins to squeeze the friction plate 431 under the action of centrifugal force, causing the friction plate 431 to move along the guide part 435 towards the friction part 434 and generate friction. At this time, the larger friction force will also slow down the descent speed of the bearing platform 4, ensuring that the bearing platform 4 slowly descends and opens to the designed position.

[0121] The above embodiments can also be modified in another way, for example... Figure 12 In the illustrated embodiment, the sustained-release unit 430 may include:

[0122] A guide member 435 is connected to the rotating shaft 422; the guide member 435 is a centrifugal guide member; for example, it can be set as two as shown in the figure, or three or more can be set radially in the circumferential direction.

[0123] The extrusion block 439 is slidably connected to the guide 435;

[0124] A friction component 434 is fixed to the fixed base 421;

[0125] The friction plate 431 is disposed between the guide member 435 and the friction part 434, and the friction surfaces of the friction plate 431 and the friction part 434 are disposed opposite to each other;

[0126] The extrusion block 439 is configured such that when the rotating shaft 422 makes a first movement, the extrusion block 439 makes a centrifugal movement and pushes the friction plate 431 to move toward the friction part 434 until the friction plate 431 abuts against the friction part 434.

[0127] Unlike the above embodiments, when the rotating shaft 422 rotates, it will simultaneously drive the guide 435, the pressing block 439 and the friction plate 431 to rotate. Under the action of centrifugation, the pressing block 439 will generate relative displacement with the guide 435, and at the same time, it will push against the friction plate 431 and move towards the friction part 434 until the friction surfaces of the two come into contact with each other. At this time, the greater friction force will also slow down the descent speed of the bearing platform 4, ensuring that the bearing platform 4 slowly descends and opens to the design position.

[0128] Furthermore, in some embodiments, the fixing seat 421 may be a U-shaped seat; the turntable 423 is located outside the U-shaped seat; and the release part 430 is located inside the U-shaped seat. The U-shaped seat separates the main components of the running part 420 from the main components of the release part 430, and can protect the components of the release part 430, preventing components such as springs from being interfered with by foreign objects and causing failure. It can also prevent the connecting parts 410, such as cables, from accidentally winding into the components of the release part 430.

[0129] See Figure 13 In some other feasible embodiments, the connecting part 410 is a cable; the running part 420 is a guide wheel disposed on the fixed frame 1, which can be disposed inside the fixed frame 1 or outside the fixed frame 1; one end of the cable is connected to the movable end of the bearing platform 4, and the other end is connected to the release part 430 after passing through the guide wheel.

[0130] In this embodiment, the release part 430 can be disposed on the side or bottom of the fixed frame 1; the release part 430 directly applies the opposite force to the pulling force of the connecting part 410. There are various specific implementations of the release part 430; for example, the release part can be an elastic damping device. When the cable is pulled out, the spring disposed inside the elastic damping device is stretched, compressed, or rotated, increasing its elastic potential energy. This elastic potential energy exerts a reaction force on the opening bearing platform 4 at the other end of the cable, causing it to slowly descend to the set position.

[0131] In other embodiments, the slow-release unit may be a pneumatic or hydraulic component. The pneumatic or hydraulic component may be configured such that when the support platform 4 is opened, the pneumatic or hydraulic component is activated, the telescopic end extends the opening release cable, and the release speed of the telescopic end is controlled to slowly release the support platform 4 to a set position.

[0132] See Figure 14 and Figure 15 In some embodiments, the slow-release unit 430 may also be a counterweight. The counterweight provides resistance for slow release based on its gravity. It should be noted that the weight and number of counterweights should be determined after calculation based on parameters such as the weight of the support platform and the angle of the cables, in order to achieve the purpose of optimally and stably releasing the support platform 4.

[0133] The aforementioned elastic damping devices, pneumatic or hydraulic components, and counterweights can be used in combination in practical applications, and there are no restrictions on their use.

[0134] Depend on Figure 16 It is understood that, in another embodiment, the sustained-release portion 430 may further include:

[0135] The trough 440 is fixed to the side of the fixed frame 1 that is close to the outside, and has a preset distance from the fixed frame 1.

[0136] A third elastic member 441 is located inside the groove 440; the third elastic member 441 has an inner cavity formed in the middle, and the width of the inner cavity gradually decreases along the direction from the opening of the groove 440 to the inside.

[0137] A pressure rod 442 abuts against the inner cavity of the third elastic member 441; the end of the pressure rod 442 away from the third elastic member 441 slides against the bearing platform 4.

[0138] In the above embodiment, as the bearing platform 4 unfolds outward, the bearing platform 4 will press down the pressure rod 442. During the downward movement of the pressure rod 442, its contact position with the third elastic element 441 changes continuously, and the generated compressive force gradually increases, thereby achieving the effect of slow release where the greater the extent to which the bearing platform 4 unfolds, the greater the elastic force.

[0139] It should be noted that, in the foregoing embodiments, it should be considered that, according to actual needs, the platform release device of this application can be configured as multiple, or the components can be configured as multiple. For example, multiple connecting parts 410 can be used to connect to the support platform 4 respectively, and the connection points can be evenly distributed on both sides of the support platform 4 or evenly distributed on the rotating side. As for the running part 420 and the release part 430, a separate set can be set for each connecting part 410, or all connecting parts 410 can be connected to the same running part 420, or multiple running parts 420 can use the same release part 430 for release.

[0140] As can be seen from the above technical solution, the platform release device provided in this application achieves stability and safety during the outward deployment of the carrying platform 4 through various forms of connecting parts 410, running parts 420, and release parts 430. In practical applications, different structural designs can be made according to actual needs. It should be considered that the several structures proposed in the embodiments of this application are only for describing the function of the components and should not be considered as limitations on specific structures. Other structures that can achieve the same function also fall within the scope of protection of this application.

[0141] This application also provides an escape platform, including: a support platform 4 and a fixed frame 1;

[0142] The fixed frame 1 is set in an opening in the building wall, and the supporting platform 4 is movably connected to the fixed frame 1;

[0143] When the support platform 4 is in the closed state, the support platform 4 is snapped into the fixed frame 1 to seal the opening;

[0144] When the support platform 4 is in the open state, the support platform 4 moves to the outside of the building wall to form a platform for escapers to stay on;

[0145] It also includes the platform sustained-release device described in any of the foregoing embodiments.

[0146] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A platform release device, applied to an escape platform including a support platform and a fixed frame, characterized in that, include: Connecting part; one end of the connecting part is connected to the movable end of the supporting platform; An operating unit that is linked to the connecting part; the operating unit is configured such that when the movable end of the bearing platform opens to the outside, it is driven by the connecting part to perform a first movement. A release element disposed on the fixed frame or the building facade is configured to apply a reverse force to the running part to impede the first movement.

2. The platform sustained-release device according to claim 1, characterized in that, The operating unit includes: A fixing seat fixed to the fixing frame or the building facade; A rotating shaft is rotatably connected to the fixed base; the rotating shaft passes through the fixed base, and a turntable is connected to one side of the shaft that extends out of the fixed base; The connecting part is a cable, one end of which is connected to the movable end of the bearing platform, and the other end is coiled around the turntable.

3. The platform sustained-release device according to claim 2, characterized in that, At least a portion of the outer side of the shaft is provided with external threads; The sustained-release portion includes: A friction pad that is slidably disposed on the outside of the rotating shaft and fixed to the fixed base; A movable member is provided on the outside of the rotating shaft and screwed to the external thread; the movable member is provided with a first elastic element and a friction part in sequence in the direction of the friction plate; the friction part is located between the friction plate and the movable member, and is slidably disposed on the outside of the rotating shaft; A guide member slidably connected to the outer side of the moving member; the guide member is laid along the moving member toward the friction pad; The movable component is configured such that when the rotating shaft makes a first movement, it moves toward the friction plate under the action of the guide component.

4. The platform sustained-release device according to claim 2, characterized in that, A guide block is connected to the outer side of the rotating shaft via a second elastic element; the elastic direction of the second elastic element is the direction of the centrifugal force of the guide block rotating along the rotating shaft; The sustained-release portion includes: Two friction parts are provided outside the rotating shaft and the guide block; the guide block is connected to at least one friction block, and the friction block abuts against the two friction parts along the direction of the centrifugal force.

5. The platform sustained-release device according to claim 4, characterized in that, The guide blocks are provided in multiple quantities and are evenly distributed on the axial side and / or circumferential side of the rotating shaft.

6. The platform sustained-release device according to claim 2, characterized in that, A centrifugal section is connected to the outside of the rotating shaft; The sustained-release portion includes: A friction component is located on the outside of the rotating shaft and fixed to the fixed base; A guide component is provided on the outside of the rotating shaft; A friction plate is provided on the outside of the rotating shaft and slides along the direction restricted by the guide; the friction plate is located between the friction part and the centrifugal part; the outer edge of the friction plate is close to the centrifugal part, and at least one extrusion block is provided in the space enclosed by the friction plate and the centrifugal part; The centrifugal section is configured such that when it makes a first movement with the rotating shaft, the extrusion block makes a centrifugal movement and pushes the friction plate toward the friction part until the friction plate abuts against the friction part.

7. The platform sustained-release device according to claim 2, characterized in that, The sustained-release portion includes: A guide component connected to the rotating shaft; the guide component is a centrifugal guide component; The extrusion block is slidably connected to the guide member; A friction component fixed to the fixed base; A friction pad is disposed between the guide member and the friction part, and the friction surfaces of the friction pad and the friction part are arranged opposite to each other; The extrusion block is configured such that when the rotating shaft makes a first movement, the extrusion block makes a centrifugal movement and pushes the friction plate to move in the direction of the first friction part until the friction plate abuts against the first friction part.

8. A platform-based sustained-release device according to any one of claims 3-7, characterized in that, The fixing base is a U-shaped base; the turntable is located on the outside of the U-shaped base; the slow-release part is located inside the U-shaped base.

9. A platform-based sustained-release device according to claim 1, characterized in that, The connecting part is a cable; the running part is a guide wheel set on the fixed frame; one end of the cable is connected to the moving end of the bearing platform, and the other end is connected to the slow-release part after passing through the guide wheel.

10. A platform-based sustained-release device according to claim 9, characterized in that, The slow-release part is at least one of an elastic damping device, a pneumatic component, a hydraulic component, and a counterweight.

11. A platform-based sustained-release device according to claim 1, characterized in that, The sustained-release portion includes: The trough is fixed to the outdoor side of the fixed frame and has a preset distance from the fixed frame. A third elastic member is located inside the groove body; the third elastic member has an inner cavity formed in the middle, and the width of the inner cavity gradually decreases along the direction from the opening of the groove body to the inside; A pressure rod abuts against the inner cavity of the third elastic element; the end of the pressure rod away from the third elastic element slides against the bearing platform.

12. An escape platform, characterized in that, include: Supporting platform and fixed frame; The fixed frame is set in an opening in the building wall, and the supporting platform is movably connected to the fixed frame; When the support platform is in the closed state, the support platform is engaged within the fixed frame to seal the opening; When the support platform is in the open state, it moves to the outside of the building wall to form a platform for escapees to stay on; It also includes the platform sustained-release device as described in any one of claims 1-11.

Images