Centrifugal slow descent device and escape platform

Abstract

The invention provides a centrifugal slow descending device and an escape platform, and relates to the technical field of escape platforms, the centrifugal slow descending device comprises a fixing part, a rotating shaft, an inhaul cable assembly and a slow release assembly, the fixing part is arranged on a bearing platform, a fixing frame or a building vertical face, and the centrifugal slow descending device is in a fixed state. A safe hanging point or a supporting object does not need to be found indoors, so that the use is convenient; during escape, a user descends to escape through the inhaul cable, in the descending process, the inhaul cable assembly drives the rotating shaft, the centrifugal guide part and the second friction part to do first rotating motion, the centrifugal moving part rotates around the rotating axis of the centrifugal guide part, and under the limiting effect of the centrifugal guide part, component force of the centrifugal moving part faces the second friction part; the centrifugal moving part abuts against the second friction part, so that the friction surface of the second friction part is in dynamic friction with the friction surface of the first friction part, the descending speed is reduced, escape personnel slowly descend, and safe descending escape is achieved.

Description

[0001] This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on January 17, 2024, with application number 202420117357.7 and invention name “A kind of escape platform and slow descent device”, the entire contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the technical field of escape platforms, and in particular to a centrifugal slow-descent device and an escape platform. Background Art

[0003] When dangerous situations occur in high-rise buildings, people inside the building are often unable to escape quickly, especially in scenarios such as fires. The elevators inside the building cannot be used or are not suitable for use, and the speed and capacity of safety passages (stairs) are low, which greatly delays the escape of people and easily creates serious safety hazards.

[0004] Existing high-rise escape equipment basically requires personnel to find safe hanging points or supports indoors when encountering dangerous situations. However, it is difficult to find them in current buildings or they are simply not available. In addition, some escape products are bulky and difficult to wear, and the descent speed is difficult to control, making it difficult to achieve safe and rapid escape. Summary of the invention

[0005] The embodiment of the present application provides a centrifugal descent control device and an escape platform. The centrifugal descent control device is fixed on the escape platform, a fixed frame or a facade of a building. The user descends to escape by pulling a cable. During the descent, the cable drives the rotating shaft, the centrifugal guide member and the second friction member to perform a first rotational motion. The centrifugal moving member rotates around the rotation axis of the centrifugal guide member. Under the limiting action of the centrifugal guide member, the component force of the centrifugal moving member is directed toward the second friction member, and the centrifugal moving member abuts against the second friction member to cause dynamic friction between the friction surface of the second friction member and the friction surface of the first friction member, thereby reducing the descent speed, slowing down the escaping personnel and achieving safe descent and escape. The present application solves the problem of existing high-rise escape supplies, in which personnel need to find a safe hanging point or support indoors when using them, which makes it inconvenient to use and difficult to achieve safe and rapid escape.

[0006] In a first aspect, an embodiment of the present application provides a centrifugal slow-descent device, which is applied to an escape platform including a load-bearing platform and a fixed frame, and includes a fixed portion, a rotating shaft, a cable assembly, and a slow-release assembly;

[0007] The fixing part is arranged on the bearing platform, or the fixing frame or the building facade, the rotating shaft is rotatably connected with the fixing part, the cable assembly is arranged on the rotating shaft, the cable assembly is connected with the rotating shaft, the cable assembly drives the rotating shaft to perform a first rotational motion, the slow-release assembly is arranged between the fixing part and the rotating shaft, and the slow-release assembly is used to apply a reverse force to the rotating shaft to hinder the first rotational motion;

[0008] The sustained-release component comprises:

[0009] A centrifugal guide connected to the rotating shaft;

[0010] A centrifugal moving member slidably connected to the centrifugal guide member;

[0011] a first friction member fixed to the fixing portion;

[0012] a second friction member disposed between the centrifugal guide member and the first friction member and connected to the rotating shaft or the centrifugal guide member or the centrifugal moving member, wherein friction surfaces of the first friction member and the second friction member are disposed opposite to each other;

[0013] The centrifugal moving part is configured as follows: when an escapee descends through the cable assembly, the cable assembly drives the rotating shaft, the centrifugal guide part and the second friction part to perform a first rotational motion, and the centrifugal moving part rotates around the rotation axis of the centrifugal guide part. Under the limiting action of the centrifugal guide part, the component force of the centrifugal moving part is directed toward the second friction part, and the centrifugal moving part abuts against the second friction part to cause dynamic friction between the friction surface of the second friction part and the friction surface of the first friction part.

[0014] In a feasible implementation, the centrifugal guide member includes a guide portion, an open end of the guide portion faces the second friction member, and a guide stopper is provided on the rotating shaft or the centrifugal guide member, and the guide stopper is connected to the second friction member so that the rotating shaft or the centrifugal guide member drives the second friction member to move;

[0015] The centrifugal moving part is an extrusion block, and a plurality of the extrusion blocks are slidably connected to the inner wall of the centrifugal guide member;

[0016] When the centrifugal guide member and the second friction member make a first movement with the rotating shaft, the extrusion block makes a centrifugal movement in the centrifugal guide member, and the extrusion block applies a thrust to the second friction member in the direction of the first friction member, so that the second friction member and the first friction member perform dynamic friction.

[0017] In a feasible implementation, the guide limiter includes a first limiter, the first limiter is fixed to the outer wall of the rotating shaft or the inner wall of the centrifugal guide, and the extension direction of the first limiter is parallel to the axis of the rotating shaft;

[0018] The second friction member is provided with a second limiting portion, and the first limiting portion is engaged with the second limiting portion.

[0019] In a feasible implementation, the centrifugal guide member includes a plurality of inclined rod bodies, one end of each inclined rod body is connected to the rotating shaft, and the other end of each inclined rod body extends toward the second friction member side;

[0020] The centrifugal moving part is sleeved on the inclined rod body, and the outer end of the centrifugal moving part is slidably connected with the second friction part.

[0021] In a feasible implementation, the slow-release component further includes a first elastic member;

[0022] One end of the first elastic member in the direction of extension and contraction is connected to the inclined rod body or the rotating shaft, and the other end of the first elastic member in the direction of extension and contraction is connected to the centrifugal moving member;

[0023] The first elastic member is always in a compressed state so that the second friction member fits the first friction member.

[0024] In a feasible implementation, a third limiting portion is provided on the outer wall of the second friction member, and a fourth limiting portion is provided on the outer end of the centrifugal moving member;

[0025] The outer wall of the fourth limiting portion is slidably connected to the inner wall of the third limiting portion.

[0026] In a feasible implementation, the first friction member is a ring structure, and the first friction member is sleeved on the rotating shaft;

[0027] The centrifugal guide member includes a guide rod, a plurality of the guide rods are located in the first friction member, one end of the guide rod is connected to the rotating shaft, and the other end of the guide rod extends toward the first friction member;

[0028] The centrifugal moving part is sleeved on the guide rod, the second friction part is arranged on the centrifugal moving part, and the second friction part is slidably connected with the first friction part.

[0029] In a feasible implementation, the slow-release component further includes a second elastic member;

[0030] One end of the second elastic member in the direction of extension and contraction is connected to the rotating shaft or the guide rod, and the other end of the second elastic member in the direction of extension and contraction is connected to the centrifugal moving member;

[0031] The second elastic member is always in a compressed state, and applies elastic force to the second friction member on the centrifugal moving member, so that the outer wall of the centrifugal moving member abuts against the inner wall of the second friction member.

[0032] In a feasible implementation, the cable assembly includes a cable and a rotating disk;

[0033] The rotating disk is sleeved on the rotating shaft and fixedly connected to the rotating shaft, and the cable is wound around the rotating disk;

[0034] When the escapee descends through the cable, the cable drives the rotating disk and the rotating shaft to perform the first rotational motion.

[0035] In a feasible implementation, the centrifugal slow-down device further includes a slow-release mechanism, and the slow-release mechanism includes:

[0036] A friction plate sleeved on the outer side of the rotating shaft and fixed on the fixing portion;

[0037] A moving member disposed on the rotating shaft;

[0038] A friction disc slidably sleeved on the outer side of the rotating shaft, wherein the friction disc is located between the friction plate and the moving part;

[0039] A third elastic member is disposed between the moving member and the friction disk, and two ends of the third elastic member in a contraction direction are respectively in contact with the moving member and the friction disk;

[0040] The third elastic member is always in a compressed state, and the friction disc abuts against the friction plate.

[0041] In a second aspect, the present application provides an escape platform, including a load-bearing platform and a fixed frame;

[0042] The fixing frame is arranged in a hole opened in the facade of the building, and the carrying platform is movably connected to the fixing frame;

[0043] When the carrying platform is in a closed state, the carrying platform is clamped in the fixing frame to block the hole;

[0044] When the carrying platform is in the open state, the carrying platform moves to the outside of the building facade to form a platform for escaping personnel to stay;

[0045] Also includes the above-mentioned centrifugal slow-descent device;

[0046] The fixing part is fixed on the fixing frame or on the wall at the position of the opening.

[0047] The embodiment of the present application provides a centrifugal slow-descent device and an escape platform. The centrifugal slow-descent device includes a fixing part, a rotating shaft, a cable assembly, and a slow-release assembly. The fixing part is arranged on a load-bearing platform, a fixing frame, or a building facade. The centrifugal slow-descent device is in a fixed state. When using the centrifugal slow-descent device, there is no need to find a safe hanging point or support indoors, and it is convenient to use.

[0048] When escaping, the user descends by means of the cable. During the descent, the cable assembly drives the rotating shaft, the centrifugal guide member and the second friction member to perform a first rotational motion. The centrifugal moving member rotates around the rotation axis of the centrifugal guide member. Under the limiting action of the centrifugal guide member, the component force of the centrifugal moving member is directed toward the second friction member. The centrifugal moving member abuts against the second friction member to cause dynamic friction between the friction surface of the second friction member and the friction surface of the first friction member, thereby reducing the descent speed, allowing the escapee to descend slowly and achieve safe descent and escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A first schematic diagram of an escape platform provided in an embodiment of the present application;

[0050] Figure 2 A second schematic diagram of an escape platform provided in an embodiment of the present application;

[0051] Figure 3 A third schematic diagram of an escape platform provided in an embodiment of the present application;

[0052] Figure 4 A fourth schematic diagram of an escape platform provided in an embodiment of the present application;

[0053] Figure 5 A fifth schematic diagram of an escape platform provided in an embodiment of the present application;

[0054] Figure 6 A sixth schematic diagram of an escape platform provided in an embodiment of the present application;

[0055] Figure 7 A seventh schematic diagram of an escape platform provided in an embodiment of the present application;

[0056] Figure 8 A schematic diagram of the structure of a centrifugal descent control device provided in this application;

[0057] Fig. 9 A schematic diagram of the structure of another centrifugal descent control device provided in this application;

[0058] Fig.10 A schematic diagram of the structure of another centrifugal descent control device provided in the present application;

[0059] Fig.11 for Fig.10The main cross-sectional view of

[0060] Fig.12 for Fig.10 Side cross-sectional view of .

[0061] Description of reference numerals:

[0062] 1-fixed frame; 11-side frame; 111-first accommodating space; 112-second accommodating space; 12-second sealing body; 13-second locking part; 131-hinge structure; 2-manual switch; 21-protection structure; 3-recovery device; 4-carrying platform; 41-first sealing body; 42-first locking part; 5-slant-stayed component; 6-guardrail; 7-centrifugal descending device; 71-descending rope; 72-connecting end; 8-connecting part; 9-fireproof and heat-insulating curtain;

[0063] 710-fixed part; 720-rotating shaft; 730-cable assembly; 740-slow release assembly;

[0064] 731-cable; 732-turntable; 741-centrifugal guide member; 742-first friction member; 743-guide limit member; 744-second friction member; 745-centrifugal moving member; 746-first elastic member; 747-second elastic member; 751-friction plate; 752-moving member; 753-friction disc; 754-third elastic member; 755-second guide member. DETAILED DESCRIPTION

[0065] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0066] An escape platform is a structure that can be opened on each floor of a building to form an escape platform on the exterior wall when a dangerous situation occurs. Existing buildings are usually equipped with casement, sliding, top-hung and bottom-hung windows for lighting and ventilation, but because the windows have small opening panels and small opening areas, they cannot form a platform for people to gather after opening, which greatly reduces the chances of trapped people escaping.

[0067] The escape platform involved in the present application can be set at a position on each floor of the building that is convenient for escape. When closed, the platform can be used as a part of the building itself, and can also be used to realize functions such as window lighting, ventilation and smoke exhaust. When opened, a platform can be formed on the facade of the building with a certain carrying capacity. Escaping personnel can gather on the platform and wait for rescue, or use a centrifugal descent device to descend to a safe position to escape danger.

[0068] like Figure 1-Figure 7 The escape platform provided in the embodiment of the present application is installed in the opening of the building, and at the same time, it is necessary to ensure that the position of the escape platform meets the requirements of the building's facade effect. The escape platform includes a bearing platform 4 and a fixed frame 1, and the fixed frame 1 is set on the opening opened on the facade of the building. The bearing platform 4 and the fixed frame 1 are movably connected. A manual switch 2 is provided on one side of the fixed frame 1 in the room, and 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 the manual switch 2 from being accidentally touched. When in use, the manual switch 2 can be operated by opening or removing the protective structure 21.

[0069] A first sealing body 41 is arranged in the frame around the carrying platform 4. When the carrying platform 4 is in a closed state, the first sealing body 41 is squeezed and sealed with a second sealing body 12 arranged on the inner side of the fixed frame 1. A guardrail 6 is arranged on the carrying platform 4. The guardrail 6 is located at the edge of the carrying platform 4 and is foldably hidden in the first accommodating space 111 of the two side frames 11 of the fixed frame 1, and is foldably hidden in the second accommodating space 112 of the upper frame of the fixed frame.

[0070] The diagonal member 5 is arranged between the two side edges of the supporting platform 4 and the two side frames 11 of the fixed frame 1, and the diagonal member 5 is hidden in the first accommodating space 111 of the two side frames 11 of the fixed frame 1; a first locking portion 42 is provided on the frame of the supporting platform 4, and the first locking portion 42 and the second locking portion 13 provided on the frame of the fixed frame form a locked state.

[0071] After the carrying platform 4 is opened by the manual switch 2, the carrying platform 4 is connected to the lower frame of the fixed frame 1, so that the carrying platform 4 is rotated toward the outdoor side and opened to the set position and stops. Specifically, the connection and rotation can be achieved through the hinge structure 131. When the carrying platform 4 is in the open state, people need to gather on the carrying platform 4 when escaping, and the carrying platform 4 should have a certain carrying capacity.

[0072] In order to ensure the safety of the escapees, the load-bearing platform 4 forms a cantilever structure with the wall after it is opened. The higher the escape hole is set and the longer the cantilever of the cantilever structure is, the more unfavorable it is to the load-bearing capacity of the load-bearing platform 4. Therefore, after the load-bearing platform 4 is opened, inclined-stayed components 5 connected to the load-bearing platform 4 are provided on both sides of the fixed frame 1 to enhance the load-bearing strength of the load-bearing platform 4.

[0073] The inclined component 5 can be a rod-type structure and be provided with a limit device, so that the inclined component 5 can run in a specified direction when the load-bearing platform 4 returns to a closed state, and the inclined component 5 can be located in a first accommodating room provided by the load-bearing platform 4 or the fixed frame 1; the inclined component 5 can also be a telescopic component, which extends or retracts to a set direction or a set position when the load-bearing platform 4 is opened, and the telescopic component is located in the accommodating space of the load-bearing platform 4 or the fixed frame 1 when the load-bearing platform 4 returns to a closed state; the inclined component 5 can also be a rope-type or chain-type component, and when the load-bearing platform 4 is in an open state, the rope-type or chain-type component extends to a set position and stops running, and a counterweight structure or a friction structure can be provided at one end of the rope-type or chain-type component to enable the load-bearing platform 4 to open slowly.

[0074] At this time, the load-bearing platform 4 has an escape function, but in order to ensure that the escapees on the load-bearing platform 4 do not fall, when the load-bearing platform 4 is in the open state, a safety guardrail 6 can be set on the side of the load-bearing platform 4 that is not connected to the wall. When the load-bearing platform 4 is opened, the guardrail 6 automatically rises to improve the safety of the load-bearing platform 4. A spring pneumatic telescopic device is provided between the load-bearing platform 4 and the guardrail 6. During the opening process of the load-bearing platform 4, under the pulling force or thrust of the spring pneumatic telescopic device, the guardrail 6 rises to a set height and locks. A gap is provided at the guardrail position of the load-bearing platform for escapees to use. After wearing the escape equipment, the escapees can escape safely through the gap without climbing over the guardrail to escape. The number and position of the gap can be set according to the usage. A railing is provided at the gap position. Before using the gap, the railing is manually opened to escape.

[0075] The fixed frame 1 is also provided with a connecting portion 8 of a backpack type centrifugal descent control device. When the escapee puts on the escape backpack, the descent cable of the backpack type centrifugal descent control device is connected to the connecting portion 8, and the lifting and lowering of the backpack type centrifugal descent control device is achieved through the descent cable. Specifically, after the escapee puts on the backpack type centrifugal descent control device, the connection end of the descent control cable is connected to the connection end of the connection part 8. In actual use, the backpack type centrifugal descent control device realizes descent under a certain gravity through the friction part. The descent control cable is stored in a winch connected to the friction part. The entire component is installed in the backpack. The connection end of the descent control cable extends out of the backpack and is connected to the connection part 8 provided on the fixed frame 1. The escapee can escape after fixing the backpack type centrifugal descent control device to the body through a safety belt. The friction force of the friction part is adjustable, and the adjustment of the friction force can change the descent speed; the backpack type centrifugal descent control device can be provided with a descent stop device, which is manually controlled. The descent stop device can increase the friction force by squeezing the friction part through the squeezing structure, and stop descending when the friction force is greater than the gravity; it can also increase the friction force by squeezing the descent control cable through the squeezing structure, and stop descending when the friction force is greater than the gravity.

[0076] The escape platform is also provided with a recovery device 3, which is arranged on the fixed frame 1. After the carrying platform 4 is opened to complete the escape task, the various functions and components of the carrying platform 4 are checked. When the various functions and components of the carrying platform 4 are checked to be intact, the recovery device 3 can be used to manually restore the carrying platform 4 to a closed state from the indoor side, and the locking is achieved through the locking structure arranged on the fixed frame 1 and the carrying platform 4. After the carrying platform 4 is restored to its initial state, the carrying platform 4 can still be reused.

[0077] Specifically, a rope-like component can be used to connect the recovery device 3 and the carrying platform 4, that is, one end of the rope-like component is connected to the carrying platform 4, and the other end is connected to the rope pulley of the recovery device 3, and the rope pulley is controlled by the one-way movement principle of the pawl, that is, the tool corresponding to the pawl can be used to rotate the rope pulley, so that the rope-like component is wound around the rope pulley, and the carrying platform 4 is pulled back to its initial state; chain-like components can also be used, and the chain cooperates with the sprocket, and the chain is contracted by rotating the sprocket, and the contracted chain enters the set accommodating space, pulling the carrying platform 4 back to its initial state, closed state, and locked; a screw rod structure can also be used to achieve recovery, and the screw rod is rotated to make the nut connected to the screw rod move in a straight line, and the nut rope component, chain component or connecting rod component is connected to the escape platform, and the nut runs in the set direction to restore the escape platform to its initial state and lock it.

[0078] The escape platform can also be provided with a centrifugal slow-descent device 7, and escape can be achieved through the centrifugal slow-descent device 7. When in use, the escapee needs to wear an escape safety harness, and after putting on the harness, the harness is connected to the slow-descent rope 71 of the centrifugal slow-descent device 7, and the escapee can slowly descend to a safe position or the ground to escape; the centrifugal slow-descent device 7 is arranged on the indoor wall, and the number can be set to multiple, and the connecting end for connecting with the safety harness worn by the escapee extends out of the outdoor side, so that the escapee can wear the safety harness and connect to the connecting end of the centrifugal slow-descent device to escape quickly.

[0079] The centrifugal slow-descent device 7 can also be arranged on the fixed frame 1, and the number can be set to multiple. The connecting end 72 of the centrifugal slow-descent device 7 arranged on the fixed frame 1 also extends out of the outside of the room to facilitate the escapee to escape quickly.

[0080] The centrifugal descent device 7 can also be arranged separately from the supporting platform 4. For example, a first connecting part and a third locking part connected to the centrifugal descent device 7 are provided on the fixed frame 1 or the supporting platform 4, and the number of the first connecting part and the third locking part are at least one. After the supporting platform 4 is opened, the escapee fixes the centrifugal 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 centrifugal descent device. It should be noted that the number of the above-mentioned 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 realize the escape function. Instead, one escape or one escapee only needs to use a pair of first connecting parts and third locking parts. Setting multiple first connecting parts and third locking parts is convenient for the escapee to fix the safety harness on the one hand, and convenient for multiple escapees to escape at the same time on the other hand.

[0081] The centrifugal slow-descent device 7 can also be set as a reciprocating operation structure. For example, each centrifugal slow-descent device 7 is provided with two second connection parts, and the two second connection parts cannot be used at the same time. When escaping, the first escapee first uses one of the second connection parts to descend to a safe place or the ground, and then takes off the escape harness. At this time, the person to be escaped on the supporting platform 4 can use the other second connection part to descend. When the second person to be escaped descends, the connection end 72 used by the first escapee is recovered with the escape harness to the initial position on the supporting platform 4, and can be used again by the escapee. In this way, in the subsequent escape process of the escapee, there is no need to perform repeated fixing work, and the person only needs to put on the escape harness to quickly escape from the dangerous environment.

[0082] The escape platform can also be provided with a fireproof heat-insulating curtain 9, which is arranged on the indoor side of the upper frame of the fixed frame 1, and the guide limiter of the fireproof heat-insulating curtain 9 is arranged on the indoor side of the side frame 11 of the fixed frame 1. After the escapee reaches the bearing platform 4, the fireproof heat-insulating curtain 9 can be manually pulled down, thereby forming a partition seal between the bearing platform 4 and the indoor side of the building. At this time, if there are still people in the room who have not escaped to the bearing platform 4, the fireproof heat-insulating curtain 9 can also be opened from the indoor side. After reaching the bearing platform 4, the fireproof heat-insulating curtain 9 can be closed again to form a partition layer, making the bearing platform 4 space safer to gain more escape time.

[0083] The fireproof heat-insulating curtain 9 is rotated and retracted under the axis of the accommodating space by spring force. When the downward pulling force is greater than the spring force, the heat-insulating curtain moves downward along the guide limiters on both sides to the set position. A locking structure is provided at the set position. This locking structure can be opened from both indoor and outdoor sides, so that people who have not escaped to the escape platform can continue to hide and escape.

[0084] It should be noted that the centrifugal descent device 7 provided in the embodiment of the present application can also be used alone, and is not limited to construction scenes, but can also be used in other scenes with height differences, such as tower cranes, mountains, bridges, mines or ships.

[0085] Based on the above escape platform, the specific structure of the centrifugal slow-descent device 7 is described in detail as follows:

[0086] Reference Figure 8-Figure 10 As shown, the embodiment of the present application provides a centrifugal slow-descent device, that is, the centrifugal slow-descent device mentioned above, which is applied to an escape platform including a load-bearing platform and a fixed frame, and includes a fixed portion 710, a rotating shaft 720, a cable assembly 730, and a slow-release assembly 740;

[0087] like Figure 8 As shown, the fixing portion 710 may be a metal connection seat, which includes a horizontally arranged fixing plate and a vertically arranged connection plate, the fixing plate may be fixed on a bearing platform, a fixing frame or a building facade, and a plurality of connection plates are vertically arranged on the fixing plate;

[0088] The rotating shaft 720 passes through multiple fixing plates of the fixing part 710 and is rotatably connected to the fixing part 710. The cable assembly 730 is fixedly connected to the rotating shaft 720 and is coaxially arranged with the rotating shaft 720. When the escapee descends to escape through the cable assembly 730, the cable assembly 730 drives the rotating shaft 720 to perform a first rotational motion, which can be a clockwise rotational motion; the slow-release assembly 740 applies a reverse force to the rotating shaft 720 that hinders the first rotational motion, so as to reduce the rotation speed of the rotating shaft 720, reduce the release speed of the cable assembly 730, and thereby reduce the descent speed of the escapee, thereby preventing the escapee from being injured due to excessive descent speed.

[0089] The sustained release component 740 includes:

[0090] A centrifugal guide member 741 connected to the rotating shaft 720. The centrifugal guide member 741 is directly or indirectly connected to the rotating shaft 720. The rotating shaft 720 drives the centrifugal guide member 741 to rotate synchronously.

[0091] A centrifugal moving member 745 slidably connected to the centrifugal guide member 741, wherein a plurality of centrifugal moving members 745 may be provided;

[0092] A first friction member 742 fixed to the fixed portion, the first friction member 742 may be an annular friction disc, the first friction member 742 is fixed to the fixed portion 710, the friction surface of the first friction member 742 is perpendicular to the axis of the rotating shaft 720, and the first friction member 742 may be sleeved on the rotating shaft 720;

[0093] A second friction member 744 is disposed between the centrifugal guide member 741 and the first friction member 742 and connected to the rotating shaft 720 or the centrifugal guide member 741 or the centrifugal moving member 745, wherein the friction surface of the second friction member 744 faces the friction surface of the first friction member 742, and the two friction surfaces are parallel;

[0094] The second friction member 744 may be an annular friction disk, and the second friction member 744 may be sleeved on the rotating shaft 720. The second friction member 744 rotates synchronously with the rotating shaft 720 or the centrifugal guide member 741 or the centrifugal moving member 745, and the second friction member 744 may move along the axial direction of the rotating shaft 720.

[0095] When the escapee descends through the cable assembly, the cable assembly 730 drives the rotating shaft 720, the centrifugal guide member 741 and the second friction member 744 to perform a first rotational motion, and the centrifugal moving member 745 rotates around the rotation axis of the centrifugal guide member 741. Under the limiting action of the centrifugal guide member 741, the component force of the centrifugal moving member 745 is directed toward the second friction member 744, and the centrifugal moving member 745 abuts against the second friction member 744, so that the friction surface of the second friction member 744 and the friction surface of the first friction member 742 are in dynamic friction, and the friction force hinders the second friction member 744 from performing the first rotational motion, thereby hindering the cable assembly 730 from rotating and releasing, thereby reducing the user's descending speed;

[0096] Furthermore, when the user descends too quickly, the higher the rotation speed of the cable assembly 730, the greater the centrifugal force of the centrifugal moving part 745, the greater the thrust on the second friction part 744, the greater the pressure of the second friction part 744 on the first friction part 742, the greater the friction force between the second friction part 744 and the greater the resistance encountered by the second friction part 744 as the second friction part 744 rotates relative to the first friction part 742, thereby reducing the rotation speed of the cable assembly 730 and preventing the user from descending too quickly.

[0097] like Figure 8 As shown, in some embodiments, the centrifugal guide member 741 includes a guide portion, the guide portion is a cover body, the open end of the centrifugal guide member 741 faces the second friction member 744 and the friction surface of the first friction member 742, the axial section of the inner wall of the centrifugal guide member 741 is conical or semi-elliptical, the centrifugal guide member 741 is fixedly connected to the rotating shaft 720, and is coaxially arranged, and the centrifugal guide member 741 and the rotating shaft 720 rotate synchronously and in the same direction;

[0098] In order to make the second friction member 744 rotate synchronously with the rotating shaft 720 or the centrifugal guide member 741 and make the second friction member 744 move along the axial direction of the rotating shaft 720, a guide stopper 743 is provided on the rotating shaft 720 or the centrifugal guide member 741;

[0099] The centrifugal moving member 745 can be a metal ball or extrusion block with a certain mass. The centrifugal moving member 745 is located in the space enclosed by the second friction member 744 and the centrifugal guide member 741. At least one centrifugal moving member 745 is provided.

[0100] When the escapee descends through the cable 731, the cable 731 drives the turntable 732, the rotating shaft 720 and the centrifugal guide member 741 to perform a first movement. As the descending speed increases, the rotation speed of the centrifugal guide member 741 increases, and the centrifugal moving member 745 performs a centrifugal movement in the centrifugal guide member 741. Because the inner wall of the centrifugal guide member 741 is inclined, the centrifugal moving member 745 moves toward the second friction member 744 under the action of the centrifugal force component, and the centrifugal moving member 745 applies a thrust to the second friction member 744 in the direction of the first friction member 742, so that the friction surface of the second friction member 744 and the friction surface of the first friction member 742 are in dynamic friction. The greater the rotation speed of the centrifugal guide member 741, the greater the centrifugal force of the centrifugal moving member 745, the greater the thrust on the second friction member 744, and the greater the dynamic friction between the second friction member 744 and the first friction member 742.

[0101] The dynamic friction between the second friction member 744 and the first friction member 742 hinders the rotation of the second friction member 744, that is, hinders the rotation of the centrifugal guide member 741, the rotating shaft 720 and the rotating disk 732, thereby reducing the descent speed, allowing the escapee to descend slowly and achieve safe and rapid descent escape.

[0102] In some embodiments, the guide stopper 743 includes a first stopper portion, which may be a rectangular parallelepiped, and the first stopper portion is fixed to the outer wall of the rotating shaft or the inner wall of the centrifugal guide member, and the extension direction of the first stopper portion is parallel to the axis of the rotating shaft;

[0103] The second friction member is provided with a second limiting portion, which is a groove body matching the first limiting portion. The first limiting portion and the second limiting portion are clamped together, so that the second friction member 744 rotates synchronously with the rotating shaft 720 or the centrifugal guide member 741, and the second friction member 744 can move along the axial direction of the rotating shaft 720.

[0104] like Fig. 9 As shown, in some embodiments, the centrifugal guide member 741 includes a plurality of inclined rods, which may be round rods inclined at 45°, one end of which is connected to the rotating shaft, and the other end of which extends toward the second friction member.

[0105] Fig. 9 The centrifugal guide member 741 is composed of two oblique rods, and is V-shaped as a whole. The centrifugal guide member 741 can also be composed of multiple oblique rods;

[0106] The centrifugal moving member 745 may be a sleeve matching the centrifugal guide member 741 , the centrifugal moving member is sleeved with the inclined rod body, and the outer end of the centrifugal moving member is slidably connected with the second friction member 744 ;

[0107] When the centrifugal guide member 741 rotates, the centrifugal moving member 745 rotates synchronously, and the centrifugal moving member 745 moves upward under the action of centrifugal force, pushing the second friction member 744 upward, so that the friction surface of the second friction member 744 and the friction surface of the first friction member 742 are in dynamic friction, and the friction force hinders the second friction member 744 from performing the first rotational movement, thereby hindering the rotation and release of the cable assembly 730, thereby reducing the user's descending speed;

[0108] Furthermore, when the user descends too quickly, the greater the thrust of the centrifugal moving part 745 is than the second friction part 744, the greater the pressure of the second friction part 744 on the first friction part 742, and the second friction part 744 rotates relative to the first friction part 742. The greater the friction between the two, the greater the resistance encountered by the second friction part 744, thereby reducing the rotation speed of the cable assembly 730 to prevent the user from descending too quickly.

[0109] In some embodiments, the slow-release assembly further includes a first elastic member 746 , which may be a spring or a cylinder;

[0110] like Fig. 9 As shown, the first elastic member 746 is a spring, the bottom end of the spring is connected to the inclined rod body or the rotating shaft, and the top end of the spring is connected to the centrifugal moving member;

[0111] The first elastic member 746 is always in a compressed state, and exerts an upward elastic force on the centrifugal moving member 745 , so that the centrifugal moving member 745 abuts against the second friction member 744 , so that the second friction member 744 and the first friction member 742 are always in contact with each other.

[0112] In some embodiments, the outer wall of the second friction member 744 is provided with a third limiting portion, such as Fig. 9 As shown, the third limiting portion is a conventional sliding groove arranged horizontally, and the outer end of the centrifugal moving part is provided with a fourth limiting portion, which can be a rectangular sliding block matching the third limiting portion;

[0113] The outer wall of the fourth limiting portion is slidably connected to the inner wall of the third limiting portion, so that the centrifugal moving member 745 drives the second friction member 744 to rotate synchronously, and the centrifugal moving member 745 is slidably connected to the second friction member 744 .

[0114] Similarly, the second friction member 744 may also be connected to the rotating shaft or the inclined rod body;

[0115] The rotating shaft is provided with a fifth limiting portion, the third limiting portion is a conventional sliding groove arranged horizontally, the fifth limiting portion can be a rectangular slider matching the third limiting portion, the extension direction of the rectangular slider is parallel to the axis of the rotating shaft, and the outer wall of the rectangular slider is slidably connected to the inner wall of the conventional sliding groove;

[0116] The inclined rod body is provided with a sixth limiting part, the third limiting part is a through hole, and the sixth limiting part is a guide rod body. The axis of the through hole, the axis of the guide rod body and the axis of the rotating shaft are parallel, and the guide rod body is inserted into the through hole to achieve limiting and guiding.

[0117] like Figure 10-12 As shown, the first friction member 742 is a ring structure, the first friction member 742 is sleeved on the rotating shaft 720, and is fixedly connected to the fixing portion 710;

[0118] The centrifugal guide member 741 includes a guide rod, which is a straight rod body. A plurality of guide rods are located in the first friction member 742. One end of the guide rod is connected to the rotating shaft 720, and the other end of the guide rod extends toward the first friction member 742.

[0119] The centrifugal moving member 745 may be a sleeve ring structure, the centrifugal moving member 745 is sleeved with the guide rod, and the centrifugal moving member 745 and the second friction member 744 may be an integral structure, and the second friction member 744 is located at the outer end of the ring structure.

[0120] The outer end of the collar structure is slidably connected to the first friction member 742 , that is, the second friction member 744 is slidably connected to the inner wall of the first friction member 742 ;

[0121] When the cable assembly 730 drives the rotating shaft 720 and the centrifugal guide member 741 to make the first rotational motion, the centrifugal guide member 741 drives the centrifugal moving member 745 to move. Under the action of centrifugal force, the centrifugal moving member 745 slides and rubs against the second friction member 744. The friction force applies a reverse force to the centrifugal guide member 741 and the rotating shaft 720 to hinder the first rotational motion, so as to reduce the rotation speed of the rotating shaft 720, reduce the release speed of the cable assembly 730, and further reduce the descent speed of the escapee, thereby preventing the escapee from being injured due to the excessively fast descent speed.

[0122] The slow-release assembly further includes a second elastic member 747;

[0123] One end of the second elastic member 747 in the extension direction is connected to the rotating shaft or the guide rod, and the other end of the second elastic member 747 in the extension direction is connected to the centrifugal moving member. The second elastic member 747 can be a spring, and the spring is sleeved on the guide rod. The inner end of the spring abuts against the rotating shaft or the guide rod, and the outer end of the spring abuts against the centrifugal moving member 745.

[0124] The second elastic member 747 is always in a compressed state, and applies elastic force to the second friction member 744 on the centrifugal moving member 745, so that the outer wall of the centrifugal moving member 745 abuts against the inner wall of the second friction member 744, thereby providing initial friction resistance.

[0125] Reference Figure 8 As shown, in some embodiments, the cable assembly 730 includes a cable 731 and a rotating disk 732;

[0126] The rotating disk 732 is sleeved on the rotating shaft 720 and is rotatably connected to the rotating shaft 720. The side wall of the rotating disk 732 is fixedly connected to the end of the friction ring 740. The rotating disk 732 and the friction ring 740 rotate in the same direction and at the same speed.

[0127] The cable 731 may be a pull rope, the cable 732 is wound around the rotating disk 732, and a connecting ring is provided at the outer end of the cable 731;

[0128] When the escapee descends through the cable 731 , the cable 731 drives the rotating disk 732 and the friction ring 740 to perform a first rotational motion.

[0129] Reference Figure 8 As shown, in some embodiments, the centrifugal slow-down device further includes a slow-release mechanism 750, and the slow-release mechanism 750 includes:

[0130] The sliding sleeve is disposed on the outer side of the rotating shaft 720 and fixed to the friction plate 751 on the fixing portion 710. The friction plate 751 may be a circular friction plate.

[0131] A moving member 752 disposed on the rotating shaft 720, the moving member 752 may be a nut;

[0132] The friction disc 753 is slidably sleeved on the outer side of the rotating shaft 720. The friction disc 753 is an annular structure, sleeved on the rotating shaft 720, and the friction disc 753 is located between the friction plate 751 and the moving member 752. The friction disc 753 is in contact with the friction plate 751, and the friction disc 753 rotates synchronously with the rotating shaft 720. The outer wall of the rotating shaft 720 can be provided with a first limiting portion, and the extension direction of the first limiting portion is consistent with the axis of the rotating shaft 720. The inner end of the friction disc 753 is provided with a second limiting portion, and the first limiting portion is clamped with the second limiting portion, and the first limiting portion can slide slightly in the second limiting portion, so that the friction disc 753 rotates synchronously with the rotating shaft 720, and the friction disc 753 can slide slightly on the rotating shaft 720;

[0133] A third elastic member 754 is disposed between the moving member 752 and the friction disk 753. The third elastic member 754 may be a spring or a cylinder. Two ends of the third elastic member 754 in the extension direction are respectively in contact with the moving member 752 and the friction disk 753. The third elastic member 754 is always in a compressed state, so that the friction disk 753 always fits the friction plate 751.

[0134] The friction disc 753 fits the friction plate 751. When the rotating shaft 720 drives the friction disc 753 to rotate, dynamic friction occurs between the friction disc 753 and the friction plate 751, which hinders the rotation of the rotating shaft 720 and further hinders the rotation of the rotating disk 732, thereby reducing the descent speed of the escapee.

[0135] In some embodiments, the slow-release mechanism 750 further includes a second guide member 755;

[0136] The outer wall of the rotating shaft 720 is provided with an external thread, and the moving member 752 is threadedly connected with the external thread of the rotating shaft 720;

[0137] The second guide member 755 is disposed on the fixed portion 710. The second guide member 755 can be called a slide rail. A slide groove is disposed on the outer wall of the movable member 752. The slide rail and the slide groove are slidably connected to prevent the movable member 752 from rotating.

[0138] When the rotating shaft 720 makes the second rotational motion, because the moving member 752 cannot rotate synchronously, the moving member 752 moves towards the direction close to the friction plate 751 under the action of the second guide member 755, so that the third elastic member 754 is further compressed, the elastic force on the friction disk 753 is increased, and the dynamic friction between the friction disk 753 and the friction plate 751 is increased, thereby increasing the reverse force that hinders the rotating disk 732 from making the first rotational motion. The maximum dynamic friction between the friction disk 753 and the friction plate 751 can be controlled by setting the length of the second guide member 755.

[0139] The present application provides an escape platform, comprising a bearing platform 4 and a fixing frame 1;

[0140] The fixed frame 1 is arranged in a hole opened on the facade of the building, and the carrying platform 4 is movably connected to the fixed frame;

[0141] When the carrying platform 4 is in a closed state, the carrying platform 4 is clamped in the fixing frame to block the opening;

[0142] When the carrying platform 4 is in the open state, the carrying platform 4 moves to the outside of the building facade to form a platform for escaping personnel to stay;

[0143] It also includes the centrifugal descent control device 7 obtained above;

[0144] The fixing portion 710 is fixed on the fixing frame 1 or on the wall at the opening.

[0145] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

[0146] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0147] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A centrifugal slow-descent device, applied to an escape platform including a bearing platform and a fixed frame, characterized in that: include; A fixing part, which is arranged on the carrying platform, the fixing frame or the building facade; A rotating shaft rotatably connected to the fixing portion; A cable assembly is arranged on the rotating shaft, the cable assembly is connected to the rotating shaft, and the cable assembly drives the rotating shaft to perform a first rotational motion; a slow-release assembly disposed between the fixing portion and the rotating shaft, the slow-release assembly being used to apply a reverse force to the rotating shaft to hinder the first rotational motion; The sustained-release component comprises: A centrifugal guide connected to the rotating shaft; A centrifugal moving member slidably connected to the centrifugal guide member; a first friction member fixed to the fixing portion; a second friction member disposed between the centrifugal guide member and the first friction member and connected to the rotating shaft, the centrifugal guide member, or the centrifugal moving member, wherein friction surfaces of the first friction member and the second friction member are disposed opposite to each other; The centrifugal moving part is configured as follows: when an escapee descends through the cable assembly, the cable assembly drives the rotating shaft, the centrifugal guide part and the second friction part to perform a first rotational motion, and the centrifugal moving part rotates around the rotation axis of the centrifugal guide part. Under the limiting action of the centrifugal guide part, the component force of the centrifugal moving part is directed toward the second friction part, and the centrifugal moving part abuts against the second friction part to cause dynamic friction between the friction surface of the second friction part and the friction surface of the first friction part.

2. The centrifugal descent control device according to claim 1, characterized in that: The centrifugal guide member comprises a guide portion, an open end of the guide portion faces the second friction member, a guide stopper is provided on the rotating shaft or the centrifugal guide member, and the guide stopper is connected to the second friction member so that the rotating shaft or the centrifugal guide member drives the second friction member to move; The centrifugal moving part is an extrusion block, and a plurality of the extrusion blocks are slidably connected with the centrifugal guide member; When the centrifugal guide member and the second friction member make a first movement with the rotating shaft, the extrusion block makes a centrifugal movement in the centrifugal guide member, and the extrusion block applies a thrust to the second friction member in the direction of the first friction member, so that the second friction member and the first friction member perform dynamic friction.

3. The centrifugal descent control device according to claim 2, characterized in that: The guide limiter comprises a first limiter, the first limiter is fixedly arranged on the outer wall of the rotating shaft or the inner wall of the centrifugal guide, and the extension direction of the first limiter is parallel to the axis of the rotating shaft; The second friction member is provided with a second limiting portion, and the first limiting portion is connected to the second limiting portion.

4. The centrifugal descent control device according to claim 1, characterized in that: The centrifugal guide member includes a plurality of inclined rod bodies, one end of each inclined rod body is connected to the rotating shaft, and the other end of each inclined rod body extends toward the second friction member side; The centrifugal moving part is slidably connected to the inclined rod body.

5. The centrifugal descent control device according to claim 4, characterized in that: The slow-release assembly further includes a first elastic member; One end of the first elastic member in the direction of extension and contraction is connected to the inclined rod body or the rotating shaft, and the other end of the first elastic member in the direction of extension and contraction is connected to the centrifugal moving member; The first elastic member is always in a compressed state so that the second friction member fits the first friction member.

6. The centrifugal descent control device according to claim 4, characterized in that: The outer end of the centrifugal moving part is provided with a fourth limiting portion; A third limiting portion is provided on the second friction member, and an outer wall of the fourth limiting portion is connected to the third limiting portion; Or, a fifth limiting portion is provided on the rotating shaft, and an outer wall of the fourth limiting portion is connected to the fifth limiting portion; Alternatively, a sixth limiting portion is provided on the inclined rod body, and an outer wall of the fourth limiting portion is connected to the sixth limiting portion.

7. The centrifugal descent control device according to claim 1, characterized in that: The first friction member is a ring structure, and the first friction member is sleeved on the rotating shaft; The centrifugal guide member includes a guide rod, a plurality of the guide rods are located in the first friction member, one end of the guide rod is connected to the rotating shaft, and the other end of the guide rod extends toward the first friction member; The centrifugal moving part is sleeved on the guide rod, the second friction part is arranged on the centrifugal moving part, and the second friction part is slidably connected with the first friction part.

8. The centrifugal descent control device according to claim 7, characterized in that: The slow-release assembly further includes a second elastic member; One end of the second elastic member in the direction of extension and contraction is connected to the rotating shaft or the guide rod, and the other end of the second elastic member in the direction of extension and contraction is connected to the centrifugal moving member; The second elastic member is always in a compressed state, and applies elastic force to the second friction member on the centrifugal moving member, so that the outer wall of the centrifugal moving member abuts against the inner wall of the second friction member.

9. The centrifugal descent control device according to claim 1, characterized in that: The cable assembly comprises a cable and a rotating disk; The rotating disk is sleeved on the rotating shaft and fixedly connected to the rotating shaft, and the cable is wound around the rotating disk; When the escapee descends through the cable, the cable drives the rotating disk and the rotating shaft to perform the first rotational motion.

10. The centrifugal descent control device according to claim 1, characterized in that: The centrifugal slow-down device also includes a slow-release mechanism, which includes: a friction plate fixed on the fixing portion; A moving member disposed on the rotating shaft; a friction disc located between the friction plate and the moving member; A third elastic member is disposed between the moving member and the friction disk, and two ends of the third elastic member in a contraction direction are respectively in contact with the moving member and the friction disk.

11. An escape platform, characterized in that: It includes a bearing platform and a fixing frame; The fixing frame is arranged in a hole opened in the facade of the building, and the carrying platform is movably connected to the fixing frame; When the carrying platform is in a closed state, the carrying platform is clamped in the fixing frame to block the hole; When the carrying platform is in the open state, the carrying platform moves to the outside of the building facade to form a platform for escaping personnel to stay; Also includes the centrifugal descent control device according to any one of claims 1 to 10; The fixing part is fixed on the fixing frame or on the wall at the position of the opening.

Images