Platform frame connecting structure and escape platform

Abstract

The embodiment of the utility model provides a platform frame connecting structure and an escape platform, and relates to the technical field of connecting pieces. The first connecting part is fixed at the bottom of the fixed frame; the second connecting part is movably connected with the first connecting part through a movable part; the second connecting part is fixedly connected with the bearing platform; the second connecting part is used for assisting the bearing platform to rotate in the first direction; the first direction is the direction in which the bearing platform is unfolded outdoors from a closed state; the stop part is connected between the first connecting part and the second connecting part and used for preventing the bearing platform from rotating in the second direction, and the second direction is the opposite direction of the first direction. The connecting structure provided by the utility model is simple in construction and convenient to mount, has higher connecting strength and stability, and ensures the safety of escape personnel.

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 connector technology, and in particular to a platform frame connection structure 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, after the platform is released, it needs to open outward and rotate to a set position. At the same time, the connection strength of the platform must be guaranteed. The structure that meets the above requirements is quite complex and not conducive to the design, manufacturing and installation of the product. However, the existing hinged structure cannot guarantee high structural strength and safety. Utility Model Content

[0006] This application provides a platform frame connection structure and an escape platform to solve the problems of unstable connection structure and complex structure in existing escape platforms.

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

[0008] First connecting part; the first connecting part is fixed to the bottom of the fixing frame;

[0009] A second connecting part is movably connected to the first connecting part via a movable part; the second connecting part is fixedly connected to the support platform; the second connecting part is used to assist the support platform in rotating along a first direction; the first direction is the direction in which the support platform unfolds from the closed state to the outdoors;

[0010] A stop portion is connected between the first connecting portion and the second connecting portion. The stop portion is used to prevent the bearing platform from rotating in a second direction, which is the opposite direction to the first direction.

[0011] In some feasible embodiments, it also includes:

[0012] A limiting part is fixed to the fixed frame. When the carrying platform rotates to a preset position, the limiting part abuts against the second connecting part or the building facade to prevent the carrying platform from continuing to move in the first direction.

[0013] In some feasible embodiments, a buffer section is also included, the buffer section comprising:

[0014] The trough body; the trough body is fixed to the fixing frame;

[0015] An elastic element located inside the groove; one end of the elastic element is fixed to the bottom end of the groove, and the other end extends out from the opening of the groove.

[0016] A pressure plate fixed to the other end of an elastic member; the pressure plate is hinged to a first rotating member, the end of the first rotating member away from the pressure plate being hinged to the second connecting part.

[0017] In some feasible embodiments, a buffer section is also included, the buffer section comprising:

[0018] The trough body; the trough body is fixed to the fixing frame;

[0019] An elastic element located inside the groove body; an inner cavity is formed in the middle of the elastic element, and the width of the inner cavity gradually decreases along the direction from the opening of the groove body to the inside;

[0020] A pressure rod abuts against the inner cavity of the elastic element; the end of the pressure rod away from the elastic element slides against the second connecting part.

[0021] In some feasible embodiments, a locking part is also included, the locking part comprising:

[0022] A sliding groove is provided inside the fixed frame along the height direction;

[0023] A sliding member slidably connected to the sliding groove; the sliding member is connected to the second connecting part via a connecting rod; the two ends of the connecting rod are respectively hinged to the sliding member and the second connecting part;

[0024] One end of the sliding groove is provided with a locking structure corresponding to the sliding member; when the limiting part abuts against the second connecting part, the sliding member slides to the position corresponding to the locking structure and forms a locking state with the locking structure.

[0025] In some feasible embodiments, the locking structure includes:

[0026] A through hole is provided at one end of the sliding groove;

[0027] A locking pin is movably inserted into the through hole; the end of the locking pin is connected to the side wall of the sliding member by a spring;

[0028] The slider is provided with a limiting hole for the locking pin to pass through. The locking pin passes through both the through hole and the limiting hole to fix the slider at the corresponding position of the sliding groove.

[0029] In some feasible embodiments, the stop includes:

[0030] The ratchet connected to the movable part;

[0031] A pawl that engages with the ratchet; the pawl is used to prevent the ratchet from rotating in a second direction.

[0032] In some feasible embodiments, the end of the pawl furthest from the ratchet is hinged to the first or second connecting portion.

[0033] In some feasible embodiments, the second connecting portion includes:

[0034] The first gear connected to the movable part;

[0035] A first rack is provided along the height direction of the fixed frame, and the first rack is meshed with a first gear; the first rack is slidably connected to the fixed frame along the extension direction.

[0036] The limiting part is located in the extension direction of the first rack. When the bearing platform rotates to a preset position, the limiting part abuts against the first rack.

[0037] In some feasible embodiments, the second connecting part is a second rotating member connected to the movable part, and the outer periphery of the second rotating member is provided with a limiting protrusion within a preset angle range;

[0038] When the carrying platform rotates to a preset angle with the plane where the fixed frame is located, the limiting part and the limiting protrusion abut against each other to limit the carrying platform from continuing to rotate.

[0039] Secondly, this application also provides an escape platform, including: a support platform and a fixed frame;

[0040] The fixed frame is set in an opening in the building wall, and the supporting platform is movably connected to the fixed frame;

[0041] When the support platform is in the closed state, the support platform is engaged within the fixed frame to seal the opening;

[0042] 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;

[0043] The fixed frame and the supporting platform are connected by the platform frame connection structure described in the first aspect.

[0044] This application provides a platform frame connection structure and an escape platform, which is used to connect the carrying platform and the fixed frame. When the carrying platform is extended outward, the stop part can prevent the carrying platform from rotating in the opposite direction. When the carrying platform is fully extended, the limiting part can ensure that the carrying platform is in place in one go.

[0045] Meanwhile, the buffer section ensures a smoother unfolding of the platform, reducing impact on other components and extending the platform's lifespan; the locking structure provides stability and safety during platform use.

[0046] The connection structure provided in this application is simple in construction, easy to install, and has high connection strength and stability, ensuring the safety of escaped personnel. Attached Figure Description

[0047] 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.

[0048] Figure 1 This is a first schematic diagram of an escape platform provided in an embodiment of this application;

[0049] Figure 2 This is a second schematic diagram of an escape platform provided in an embodiment of this application;

[0050] Figure 3 A third schematic diagram of an escape platform provided in an embodiment of this application;

[0051] Figure 4 A fourth schematic diagram of an escape platform provided in an embodiment of this application;

[0052] Figure 5 A fifth schematic diagram of an escape platform provided in an embodiment of this application;

[0053] Figure 6 A sixth schematic diagram of an escape platform provided in an embodiment of this application;

[0054] Figure 7 A seventh schematic diagram of an escape platform provided in this application embodiment;

[0055] Figure 8 A diagram showing the positional relationship between the platform frame connection structure, the supporting platform, and the fixed frame, provided in an embodiment of this application;

[0056] Figure 9 for Figure 8 A schematic diagram of part A in the first embodiment;

[0057] Figure 10 for Figure 8 The diagram shows the positional relationship between the limiting part and the second connecting part in the embodiment shown.

[0058] Figure 11 for Figure 8 A schematic diagram of part A in the second embodiment;

[0059] Figure 12 for Figure 8 A schematic diagram of part A in the third embodiment;

[0060] Figure 13 for Figure 8 A schematic diagram of part A in the fourth embodiment;

[0061] Figure 14 for Figure 12 A schematic diagram of part B in one embodiment;

[0062] Figure 15 for Figure 8 A schematic diagram of part A in the fourth embodiment;

[0063] Figure 16 for Figure 8 A schematic diagram of part A in the fifth embodiment;

[0064] Figure 17 for Figure 16 A schematic diagram of the embodiment shown in another state;

[0065] Figure 18 for Figure 8 A schematic diagram of part A in the sixth embodiment.

[0066] In the picture:

[0067] 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;

[0068] 410-First connecting part; 420-Second connecting part; 421-First gear; 422-First rack; 423-Second rotating member; 4231-Limiting protrusion; 430-Moving part; 440-Stop part; 441-Ratchet; 442-Pawl; 450-Limiting part; 460-Buffer part; 461-Groove; 462-Elastic member; 463-Pressure plate; 464-First rotating member; 465-Pressure rod; 470-Locking part; 471-Sliding groove; 472-Sliding member; 4721-Limiting hole; 473-Locking structure; 4731-Through hole; 4732-Locking pin; 4733-Spring; 474-Connecting rod. Detailed Implementation

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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. In order to ensure that the carrier platform 4 stably reaches the designated position and to ensure high structural strength between it and the fixed frame 1, this application provides a platform frame connection structure to solve the aforementioned problems.

[0089] See Figures 8 to 10 This application provides a platform frame connection structure, specifically including:

[0090] First connecting part 410; the first connecting part 410 is fixed to the bottom of the fixed frame 1 and to the side closer to the outside;

[0091] A second connecting part 420 is movably connected to the first connecting part 410 via a movable part 430; the second connecting part 420 is fixedly connected to the side of the bearing platform 4 near the outdoors; in this embodiment, the first connecting part 410 and the second connecting part 420 can be in the shape of a strip, a steel bar, or other shapes, and should be considered as components that provide a connecting function. By rotating the first connecting part 410 and the second connecting part 420 relative to each other, the opening and closing states between the bearing platform 4 and the fixed frame 1 can be switched. The opening and closing states include a closed state and an unfolded state. The closed state refers to the state in which the bearing platform 4 is completely located inside the fixed frame 1. The unfolded state includes the state in which the bearing platform 4 has just rotated relative to the fixed frame 1 and has begun to unfold outward, and also includes the state in which the bearing platform 4 rotates outward to be perpendicular to the fixed frame 1.

[0092] The second connecting part 420 is used to assist the support platform 4 in rotating along a first direction; the first direction is the direction in which the support platform 4 unfolds from the closed state to the outside.

[0093] The platform frame connection structure also includes a stop portion 440 connected between the first connecting portion 410 and the second connecting portion 420. The stop portion 440 is used to prevent the carrying platform 4 from rotating in a second direction, which is the opposite direction to the first direction. In practical applications, if the platform is affected by strong wind resistance when it is deployed, it may be difficult to deploy the platform, affecting the ability of trapped personnel to reach the platform for safety as quickly as possible. In this embodiment, the stop portion 440 can prevent the carrying platform 4 from rotating in the opposite direction when it is deployed outward, thereby improving the deployment speed of the carrying platform 4.

[0094] Depend on Figure 10 It is known that the platform frame connection structure also includes a limiting part 450; the limiting part 450 can be fixed to the side of the fixed frame 1 near the outdoors. When the carrying platform 4 rotates to the preset position, the limiting part 450 abuts against the second connecting part 420 to prevent the carrying platform 4 from continuing to rotate in the first direction; wherein, the preset position can be any position during the outward rotation of the carrying platform 4, or it can be the position where the carrying platform 4 rotates to the plane perpendicular to the fixed frame 1.

[0095] Furthermore, when the supporting platform 4 unfolds outward, if the unfolding speed is too fast, it may cause impact force on the structure of the limiting part 450 or the first connecting part 410 and the second connecting part 420, which may lead to damage to the structural strength in severe cases. Therefore, in some feasible embodiments, by Figure 11 and Figure 12 As shown, the platform frame connection structure provided in this application further includes a buffer section 460, which includes:

[0096] The trough 461; the trough 461 can be fixed to the outdoor side of the fixing frame 1, and has a preset distance from the fixing frame 1; it should be noted that in this embodiment, there can be multiple ways to fix the trough 461 and the fixing frame 1, and no specific limitation is made here. Figure 11 The specific connection between the two is not shown in the figure. It should be assumed that the connection can be made through a fixed block, or through any form such as a connecting rod or a fixed frame.

[0097] The buffer portion 460 also includes an elastic element 462 located inside the groove 461; one end of the elastic element 462 is fixed to the bottom end of the groove 461, and the other end extends from the opening of the groove 461, for example, from... Figure 11 It extends from the upper middle side; the elastic element 462 can be a spring or other elastic material.

[0098] A pressure plate 463 is fixedly connected to the other end of the elastic member 462 to stabilize and compress the elastic member 462; the pressure plate 463 is hinged to a first rotating member 464, and the end of the first rotating member 464 away from the pressure plate 463 is hinged to the second connecting part 420.

[0099] Depend on Figure 11 and Figure 12 As can be seen from the movement process, when the supporting platform 4 unfolds outward, the second connecting part 420 drives the first rotating member 464 to move. At the same time, the first rotating member 464 itself changes angle, which then pushes the pressure plate 463 to compress the elastic member 462. The elastic member 462 is compressed and stores elastic potential energy, while providing a counterforce to the pressure plate 463. This counterforce can slow down the falling speed of the supporting platform 4, thereby reducing the impact force of the supporting platform 4 on other components. When the supporting platform 4 reaches the preset position (horizontal), the compression of the elastic member 462 reaches its maximum value.

[0100] Depend on Figure 13 It is understood that, in another embodiment, the buffer 460 may further include:

[0101] The trough 461 can be fixed to the side of the fixing frame 1 that is close to the outdoors, and has a preset distance from the fixing frame 1.

[0102] An elastic member 462 is located inside the groove 461; an inner cavity is formed in the middle of the elastic member 462, and the width of the inner cavity gradually decreases along the direction from the opening of the groove 461 to the inside.

[0103] A pressure rod 465 abuts against the inner cavity of the elastic member 462; one end of the pressure rod 465 away from the elastic member 462 slides against the second connecting part 420.

[0104] In the above embodiment, as the bearing platform 4 unfolds outward, the second connecting part 420 presses down the pressure rod 465. As the pressure rod 465 moves downward, its contact position with the elastic member 462 changes continuously, and the generated compressive force gradually increases, thereby achieving a buffering effect where the greater the extent to which the bearing platform 4 unfolds, the greater the elastic force.

[0105] In the above embodiments, since the elastic element 462 stores elastic potential energy, it always provides an upward thrust to the pressure plate 463 or the pressure rod 465. To prevent this thrust from pushing the bearing platform 4 upward and causing instability of the bearing platform 4, in Figure 12 In the illustrated embodiment, the platform frame connection structure provided in this application further includes a locking part 470, the locking part 470 comprising:

[0106] A sliding groove 471 is provided inside the fixed frame 1 along the height direction; the sliding groove 471 can be located on the side or the bottom of the fixed frame 1.

[0107] A sliding member 472 is slidably connected to the sliding groove 471; the sliding member 472 is connected to the second connecting part 420 via a connecting rod 474; the two ends of the connecting rod 474 are respectively hinged to the sliding member 472 and the second connecting part 420.

[0108] One end of the sliding groove 471 is provided with a locking structure 473 corresponding to the sliding member 472; when the limiting part 450 abuts against the second connecting part 420, the sliding member 472 slides to the position corresponding to the locking structure 473 and forms a locking state with the locking structure 473.

[0109] In this embodiment, the locking structure 473 locks as follows: When the supporting platform 4 just unfolds outward, the sliding member 472 is located at the upper end of the sliding groove 471 due to the action of the connecting rod 474. As the supporting platform 4 gradually unfolds outward, it pulls the connecting rod 474 outward, and the other end of the connecting rod 474 drives the sliding member 472 to move downward along the sliding groove 471. When the supporting platform 4 reaches the horizontal position, the connecting rod 474 simultaneously drives the sliding member 472 to the position of the locking structure 473, so that the locking structure 473 can lock. After the locking structure 473 reaches the locked state, the sliding member 472 can no longer move in the sliding groove 471, thereby restricting the movement of the connecting rod 474 and the supporting platform 4.

[0110] There can be various structures for achieving locking, for example, by Figure 14 In the illustrated embodiment, the locking structure 473 includes:

[0111] A through hole 4731 is provided at one end of the sliding groove 471;

[0112] A locking pin 4732 is movably inserted into the through hole 4731; the end of the locking pin 4732 is connected to the side wall of the sliding member 472 by a spring 4733;

[0113] The sliding member 472 is provided with a limiting hole 4721 for the locking pin 4732 to pass through. The locking pin 4732 passes through both the through hole 4731 and the limiting hole 4721 to fix the sliding member 472 at the corresponding position of the sliding groove 471.

[0114] In this embodiment, before the slider 472 moves to the bottom of the sliding groove 471, the locking pin 4732 can only extend out of the slider 472 and abut against the inner wall of the sliding groove 471, and cannot extend out of the through hole 4731, thus not affecting the sliding of the slider 472. When it reaches the corresponding position of the through hole 4731, the locking pin 4732 extends out of the through hole 4731 under the action of the spring 4733, thereby locking the slider 472 and achieving the limiting function.

[0115] It should be noted that, in addition to the above locking process, when the carrying platform 4 needs to be retracted, the above limiting function needs to be released. At this time, the operator can manually remove the locking pin 4732 from the through hole 4731. As for the specific unlocking method, a linkage or any other method can be used, which is not limited in this embodiment.

[0116] Furthermore, in order to achieve the purpose of preventing the bearing platform 4 from rotating in the reverse direction, the stop part 440 can be designed in various structural forms, for example, by... Figure 9 In the illustrated embodiment, the stop 440 includes:

[0117] Ratchet 441 connected to the movable part 430;

[0118] A pawl 442 engages with the ratchet 441; the pawl 442 is used to prevent the ratchet 441 from rotating in a second direction. In this embodiment, the ratchet and pawl structure should be considered a common basic component, and its function in this application is to allow the ratchet 441 to rotate only in one direction, while the pawl 442 prevents the ratchet 441 from rotating in the other direction. (Reference) Figure 9 At this time, ratchet 441 can only rotate counterclockwise and cannot rotate clockwise.

[0119] Furthermore, the location of the pawl 442 can be limited to, for example, as shown in the example. Figure 9 In addition to the arrangement of the pawl 442, the end of which is away from the ratchet 441 can be hinged to the second connecting part 420, in... Figure 15In the illustrated embodiment, the end of the pawl 442 away from the ratchet 441 can also be hinged to the first connecting portion 410 (or fixing frame 1). In this embodiment, the functions of the pawl 442 and the ratchet 441 are the same as in the previous embodiments, and will not be repeated here.

[0120] See Figure 16 and Figure 17 In some other feasible embodiments, the second connection portion 420 includes:

[0121] The first gear 421 is connected to the movable part 430;

[0122] A first rack 422 is provided along the height direction of the fixed frame 1, and the first rack 422 is meshed with a first gear 421; the first rack 422 is slidably connected to the fixed frame 1 along the extension direction.

[0123] The limiting part 450 is provided in the extending direction of the first rack 422. When the bearing platform 4 rotates to the preset position mentioned above, the limiting part 450 abuts against the first rack 422.

[0124] In this embodiment, when the supporting platform 4 unfolds outward, the movable part 430 drives the first gear 421 to rotate. Due to the meshing of the first gear 421 and the first rack 422, the first rack 422 moves relative to the first gear 421 (along the direction of rotation). Figure 15 (Moving upwards from the center), when the supporting platform 4 rotates to a preset angle with the plane where the fixed frame 1 is located, the upper end of the first rack 422 abuts against the limiting part 450 to prevent the supporting platform 4 from continuing to rotate. The preset angle can be 90°, meaning the supporting platform 4 and the plane where the fixed frame 1 are located are perpendicular, or it can be an angle slightly less than 90°, such as 89° or 88°, so that the supporting platform 4 is fixed in a slightly upward-tilted state at its movable end.

[0125] Furthermore, by Figure 18 In the illustrated embodiment, the second connecting part 420 is a second rotating member 423 connected to the movable part 430, and a limiting protrusion 4231 is provided within a preset angle range on the outer periphery of the second rotating member 423;

[0126] The end of the limiting part 450 extends toward the part of the second rotating member 423 without the limiting protrusion and is close to the outer periphery of that part. Its end has a portion that coincides with the rotation radius of the limiting protrusion 4231. When the bearing platform 4 rotates to be perpendicular to the plane where the fixed frame 1 is located, the limiting part 450 abuts against the edge of the limiting protrusion 4231, thereby limiting the bearing platform from continuing to rotate.

[0127] Furthermore, the preset angle range can be 180° or other degree ranges set according to requirements. The distribution range of the limiting protrusions 4231 can affect the structural strength. At the same time, by setting the rotation angle, the limiting protrusions can ensure that the movement of the platform 4 is not affected when switching between two different states.

[0128] As can be seen from the above technical solution, this application provides a platform frame connection structure for connecting the carrying platform and the fixed frame. When the carrying platform is unfolded outward, the stop part can prevent the carrying platform from rotating in the opposite direction. When the carrying platform is fully unfolded, the limiting part can ensure that the carrying platform is in place at once.

[0129] Meanwhile, the buffer section ensures a smoother unfolding of the platform, reducing impact on other components and extending the platform's lifespan; the locking structure provides stability and safety during platform use.

[0130] The connection structure provided in this application is simple in construction, easy to install, and has high connection strength and stability, ensuring the safety of escaped personnel.

[0131] This application also provides an escape platform, including: a support platform 4 and a fixed frame 1;

[0132] 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;

[0133] 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;

[0134] 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;

[0135] The fixed frame 1 and the supporting platform 4 are connected by the platform frame connection structure described in any of the foregoing embodiments.

[0136] 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 frame connection structure, applied to an escape platform including a support platform and a fixed frame, characterized in that, include: First connecting part; the first connecting part is fixed to the bottom of the fixing frame; A second connecting part is movably connected to the first connecting part via a movable part; the second connecting part is fixedly connected to the support platform; the second connecting part is used to assist the support platform in rotating along a first direction; the first direction is the direction in which the support platform unfolds from the closed state to the outdoors; A stop portion is connected between the first connecting portion and the second connecting portion. The stop portion is used to prevent the bearing platform from rotating in a second direction, which is the opposite direction to the first direction.

2. The platform frame connection structure according to claim 1, characterized in that, Also includes: A limiting part is fixed to the fixed frame. When the carrying platform rotates to a preset position, the limiting part abuts against the second connecting part or the building facade to prevent the carrying platform from continuing to move in the first direction.

3. The platform frame connection structure according to claim 1, characterized in that, It also includes a buffer section, the buffer section comprising: The trough body; the trough body is fixed to the fixing frame; An elastic element located inside the groove; one end of the elastic element is fixed to the bottom end of the groove, and the other end extends out from the opening of the groove. A pressure plate fixed to the other end of an elastic member; the pressure plate is hinged to a first rotating member, the end of the first rotating member away from the pressure plate being hinged to the second connecting part.

4. The platform frame connection structure according to claim 1, characterized in that, It also includes a buffer section, the buffer section comprising: The trough body; the trough body is fixed to the fixing frame; An elastic element located inside the groove body; an inner cavity is formed in the middle of the elastic element, 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 elastic element; the end of the pressure rod away from the elastic element slides against the second connecting part.

5. A platform frame connection structure according to claim 2, characterized in that, It also includes a locking part, which includes: A sliding groove is provided inside the fixed frame along the height direction; A sliding member slidably connected to the sliding groove; the sliding member is connected to the second connecting part via a connecting rod; the two ends of the connecting rod are respectively hinged to the sliding member and the second connecting part; One end of the sliding groove is provided with a locking structure corresponding to the sliding member; when the limiting part abuts against the second connecting part, the sliding member slides to the position corresponding to the locking structure and forms a locking state with the locking structure.

6. The platform frame connection structure according to claim 5, characterized in that, The locking structure includes: A through hole is provided at one end of the sliding groove; A locking pin is movably inserted into the through hole; the end of the locking pin is connected to the side wall of the sliding member by a spring; The slider is provided with a limiting hole for the locking pin to pass through. The locking pin passes through both the through hole and the limiting hole to fix the slider at the corresponding position of the sliding groove.

7. The platform frame connection structure according to claim 1, characterized in that, The stop portion includes: The ratchet connected to the movable part; A pawl that engages with the ratchet; the pawl is used to prevent the ratchet from rotating in a second direction.

8. The platform frame connection structure according to claim 7, characterized in that, The end of the pawl furthest from the ratchet is hinged to the first or second connecting part.

9. A platform frame connection structure according to claim 2, characterized in that, The second connecting part includes: The first gear connected to the movable part; A first rack is provided along the height direction of the fixed frame, and the first rack is meshed with a first gear; the first rack is slidably connected to the fixed frame along the extension direction. The limiting part is located in the extension direction of the first rack. When the bearing platform rotates to a preset position, the limiting part abuts against the first rack.

10. A platform frame connection structure according to claim 2, characterized in that, The second connecting part is a second rotating member connected to the movable part, and a limiting protrusion is provided on the outer periphery of the second rotating member within a preset angle range; When the carrying platform rotates to a preset angle with the plane where the fixed frame is located, the limiting part and the limiting protrusion abut against each other to limit the carrying platform from continuing to rotate.

11. 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; The fixed frame and the supporting platform are connected by the platform frame connection structure described in any one of claims 1-10.

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