Unpowered circulating hanging chain high-rise emergency constant-speed descent control machine shared by multiple persons

Abstract

The invention relates to the technical field of fire escape, in particular to a multi-user shared unpowered circulating hanging chain high-rise emergency constant-speed descent control machine which comprises a box body and an outer frame, after the front end of the outer frame extends out of a building, the box body is located outside the building, and a chain transmission mechanism comprises a first chain wheel, a second chain wheel and a third chain wheel. Third mounting blocks are arranged on the two sides of the third chain wheel on the third transmission shaft and slidably connected with the floating sliding rails, first supporting springs are fixed to the bottoms of the third mounting blocks, and a chain extends into the box body from the bottom of the box body, firstly bypasses the top of the third chain wheel and then bypasses the bottom of the second chain wheel; then bypasses the top of the first chain wheel and downwards extends out of the box body; the first transmission shaft is connected with a speed reduction device for automatically adjusting the rotating speed of the first transmission shaft according to the total weight of escape persons on the chain and an illumination assembly for automatically generating electricity. The device has the technical effects that the device can be used by multiple persons, and the manufacturing and maintenance cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of building fire escape, and in particular to a multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed descending machine. Background Art

[0002] With the continuous improvement of the quality of life, there are more and more high-rise buildings in the city. Once a fire breaks out in a high-rise building, it is very difficult for the people inside the building to escape. For this reason, various high-rise building rescue equipment has been developed at home and abroad.

[0003] For example, the Chinese utility model patent with the publication number CN210472816U discloses a descending device for fire escape, which includes a fixed housing and a lifting housing. A pulley is arranged in the fixed housing, and hanging buckles are connected to both the fixed housing and the lifting housing. A rope winding drum is arranged in the lifting housing, and a steel rope is wound around the rope winding drum. The steel rope bypasses the pulley and is fixedly connected to the lifting housing. One end of the rope winding drum is provided with a friction plate, a speed reduction piece is arranged in the lifting housing, and a driving member is arranged on the lifting housing. When an escape person uses the descending device to escape from a high-rise building, first install the hanging buckle on the fixed housing on the guardrail or fixed pile on the floor, then install the hanging buckle on the lifting housing on the safety belt on the body, and then hold the lifting housing by hand and descend along the building wall.

[0004] For the descending device in the above patent, if the descending speed of the escape person is relatively fast, hold the handle and the force-receiving rod with one hand at the same time, press the handle hard to make the handle close to the force-receiving rod, so that the speed reduction piece presses the friction plate to limit the speed of the rope winding drum for releasing the rope. When the escape person is descending, hold the lifting housing with both hands. When it is necessary to reduce the speed, the escape person needs to free one hand to press the handle, so the operation is not convenient. And this descending device can only be used by one escape person at a time. When there are many escape persons, some people will miss the best escape opportunity. Summary of the Invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed descending machine.

[0006] A multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed descending machine provided by the present invention adopts the following technical solutions: A multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed descending machine includes a box body and an outer frame whose front end can extend outside the building. The box body is fixed at the top of the front end of the outer frame. After the front end of the outer frame extends outside the building, the box body is located outside the building, and a chain transmission mechanism is arranged in the box body; The chain drive mechanism includes a first sprocket, a second sprocket and a third sprocket. A first transmission shaft is connected to the first sprocket, and the first transmission shaft is installed on the side wall of the box body. The second sprocket is located below the first sprocket and is installed on the side wall of the box body. The third sprocket is located above the rear side of the second sprocket. A third transmission shaft is fixed to the third sprocket. Third mounting blocks are arranged on both sides of the third sprocket on the third transmission shaft. Floating slide rails fixed to the inner wall of the box body are arranged before and after each third mounting block. The third mounting block is slidably connected to the floating slide rail. A first support spring is arranged between the bottom of the third mounting block and the inner wall of the box body. The annular chain extends from the slide pipe at the bottom of the box body into the box body, first bypasses the top of the third sprocket, then bypasses the bottom of the second sprocket, then bypasses the top of the first sprocket, and then extends downward out of the box body; a speed reduction device for automatically adjusting the rotation speed of the first transmission shaft according to the total weight of the escape personnel on the chain is connected to the first transmission shaft.

[0007] Optionally, the speed reduction device includes a reducer, a brake wheel, a first speed reduction component and a second speed reduction component. The reducer is fixed to the inner wall of the box body. The input shaft of the reducer is connected to the first transmission shaft through gears, and the output shaft of the reducer is fixed to the brake wheel; the setting of the reducer reduces the rotation speed of the brake wheel, reduces the heat generated by rapid friction, and avoids brake failure or locking due to high temperature.

[0008] The first speed reduction component includes a first friction belt and a first tension adjusting rod. The first friction belt bypasses the top of the brake wheel. One end of the first friction belt is connected to the inner side wall of the box body. One end of the first tension adjusting rod is fixed to the inner side wall of the box body. The other end of the first tension adjusting rod is connected to a first connecting plate. By adjusting the first tension adjusting rod, the frictional resistance between the first friction belt and the brake wheel can be adjusted. A first tension spring is connected between the first connecting plate and the first friction belt; The second speed reduction component includes a second friction belt, a bushing and a second tension spring. The bushing is sleeved on the third transmission shaft. A second tension spring is connected between the second friction belt and the bushing. The second friction belt bypasses the top of the brake wheel. A second tension adjusting rod is fixed to the bottom wall of the box body. A second connecting plate is connected to the second tension adjusting rod. The end of the second friction belt away from the second tension spring is connected to the second connecting plate. A balance component is installed in the box body to keep both ends of the third transmission shaft always horizontal when the third transmission shaft moves up and down.

[0009] Optionally, the speed reduction device further includes a third speed reduction and uniform speed component, which includes a first mounting plate, a hydraulic piston pump, and a cam. The first mounting plate is fixed on the inner side wall of the box body. A first rotating shaft is rotatably connected to the first mounting plate. The first rotating shaft is connected to the first transmission shaft through a gear. After passing through the first mounting plate, the first rotating shaft is fixed to the cam. A plurality of hydraulic piston pumps evenly distributed along the first rotating shaft are fixed on the first mounting plate. A connecting pipe is connected between two adjacent hydraulic piston pumps. A one-way valve is installed on the connecting pipe. When the cam rotates, it can squeeze the piston rod of the hydraulic piston pump, and discharge the hydraulic oil in the squeezed hydraulic piston pump into the hydraulic piston pump in another cavity through a damping hole and the connecting pipe.

[0010] Optionally, a lighting component is arranged inside the box body. The lighting component includes a lighting lamp and a generator. The lighting lamp is fixed on the bottom wall of the box body. A lighting hole is opened on the bottom wall of the box body. The light passes through the lighting hole to provide lighting for the escaping personnel. The generator is electrically connected to the lighting lamp. The rotating shaft of the generator is in transmission connection with the first transmission shaft. When the first transmission shaft rotates, it drives the rotating shaft of the generator to rotate.

[0011] Optionally, a second support spring and a third support spring are arranged below the third mounting block. The second support spring is sleeved outside the first support spring, and the third support spring is sleeved outside the second support spring. The bottoms of the second support spring and the third support spring are both fixed on the bottom wall of the box body. The top of the second support spring is lower than the top of the first support spring, and the top of the third support spring is lower than the top of the second support spring.

[0012] Optionally, a sliding pipe is fixed at the bottom of the box body. The chain passes through the sliding pipe and then passes above the third sprocket. The chain is a double-row chain.

[0013] Optionally, tracks are fixed on both the top plate and the bottom plate of the building. Rollers capable of moving along the tracks are installed on both the top and the bottom of the outer frame. A first locking component for fixing the outer frame when the front end of the outer frame does not extend outside the building is arranged on the side wall of the outer frame; a second locking component for fixing the outer frame when the front end of the outer frame extends outside the building is arranged on the side wall of the outer frame.

[0014] Optionally, the outer frame includes a left frame and a right frame. A cross beam is fixed between the left frame and the right frame. The left frame, the right frame, and a plurality of cross beams form a cuboid frame structure; a chain storage rack is arranged between the left frame and the right frame. The chain storage rack includes a left light plate frame and a right storage frame. Four groups of connecting components are arranged between the left light plate frame and the left frame, and four groups of connecting components are also arranged between the right storage frame and the right frame; through the four groups of connecting components, the left light plate frame and the right storage frame can be opened and closed. When opened, the left light plate frame and the right storage frame move backward and separate. When closed, the left light plate frame and the right storage frame move forward and approach; A plurality of chain supporting plates evenly distributed up and down are fixed on the right storage frame. After the right storage frame is closed, the chain supporting plates are aligned with the sliding tubes; a pulley bracket is fixed on one side of the right storage frame close to the box body, and a pulley is installed on the pulley bracket. A frame bottom plate is fixed between the bottom of the left frame and the bottom of the right frame. One side of the frame bottom plate is rotatably connected with a chain tongue plate. When the front end of the outer frame extends outside the building, the chain tongue plate rotates 90 degrees and is in a natural hanging state; When storing the chain, the chain above the locking sprocket is stacked upwards in sequence on the bottommost chain supporting plate, and two layers of chains are placed on each chain supporting plate; a plurality of positioning teeth are fixed on the chain supporting plate, and the positioning teeth are inserted between adjacent rollers of the lower layer of the chain; after the chain extends out from the topmost chain supporting plate, it passes under the pulley, passes through the sliding tube below the sliding tube and enters the box body, the chain passes through the third sprocket, the second sprocket and the first sprocket in sequence, then passes through the bottom of the box body, stacks several layers on the chain tongue plate and forms a closed loop with the chain below the locking sprocket.

[0015] Optionally, a spare bracket is fixed on the right storage frame. The spare bracket is located below the pulley bracket. One end of the spare bracket away from the right storage frame is fixed with a non-rotatable locking sprocket. A stop plate is arranged on one side of the locking sprocket. A fixed rod is fixed on the side wall of the outer frame, and the stop plate is fixed with the fixed rod. When the locking sprocket approaches the stop plate, the chain sandwiched between the stop plate and the locking sprocket is locked on the locking sprocket; A ratchet assembly is arranged on the first transmission shaft, including a ratchet, a pawl and a pressing spring. The ratchet is fixed on the first transmission shaft. One end of the pawl is rotatably connected with the first sprocket, and the other end of the pawl is inserted into the teeth of the ratchet. A third fixing block is fixed on the first sprocket, and the pressing spring is fixed between the third fixing block and the pawl.

[0016] Optionally, when storing the chain, a traction sprocket with a deceleration device is installed on the spare bracket, and the traction sprocket is removed after the storage is completed; A third locking rod is horizontally arranged at the top of the front end of the left light plate frame. An installation rod is fixed on the left light plate frame. A receiving hole is opened at one end of the installation rod away from the left light plate frame. A locking spring is arranged in the receiving hole. A cap is arranged at one end of the installation rod away from the left light plate frame, and the cap is threadedly connected with the installation rod; one end of the third locking rod is located in the receiving hole, and the other end of the third locking rod penetrates through the cap and is inserted into the third locking hole on the right storage frame; A fourth locking assembly for locking the right storage frame and the frame bottom plate under the action of the gravity of the chain is arranged on the bottommost chain supporting plate. The fourth locking assembly includes a long strip plate, a fourth locking rod and a locking lifting spring. The long strip plate is fixed at the bottom of the chain supporting plate. An installation cavity is opened inside the long strip plate. The locking lifting spring is located inside the installation cavity. The top of the locking lifting spring is fixed with a pressing block, and the top of the pressing block passes through the chain supporting plate; The fourth locking rod is fixed to the bottom of the pressing block. The bottom of the fourth locking rod extends out of the long strip plate. A fourth locking hole for inserting the fourth locking rod is provided on the frame bottom plate. A locking pressure plate is arranged on the top of the pressing block. One side of the locking pressure plate close to the positioning teeth of the chain supporting plate is hinged to the positioning teeth. The top of the pressing block contacts the bottom of the locking pressure plate. When there is no chain pressing on the locking pressure plate, the locking pressure plate is jacked up by the locking spring. One side of the locking pressure plate close to the positioning teeth is low, and the side far from the positioning teeth is high.

[0017] Compared with the prior art, the present invention has the following technical effects: 1. The position of the descent machine of the present invention is fixed, which is beneficial to the setting of the escape passage and the management of the escape passage. Escape training and drills can be held in advance, and anti-collision materials such as soft sand and rubber pads can be laid in advance at the location where people fall.

[0018] 2. Each uniform descent machine can be used by multiple people. As long as time permits, no matter how many people there are, they can escape safely. It is more suitable for buildings with dense crowds.

[0019] 3. Multiple uniform descent machines can be installed side by side for use, with higher efficiency.

[0020] 4. It can be used multiple times, and the maintenance cost is extremely low.

[0021] 5. For each additional floor height, the equipment cost only increases by the cost of six meters of chain. The cost is low, and the installation is simple and convenient.

[0022] 6. The operation is simple. When the descent machine is pushed out, the chain automatically falls. After opening the storage box, the escape personnel can descend to escape. The escape personnel do not need to do other actions, and only need to hold the sliding tube with both hands and slide down and then hold the chain tightly to achieve uniform descent.

[0023] 7. The escape personnel descend in a line, and the equipment utilization rate is high.

[0024] The following are the specific invention points and effects: 1. The present invention uses a ring-shaped hanging chain with a fixed position for people to escape. It can be used by an unlimited number of people and improves the escape efficiency. This device does not require procedures such as wearing, fixing, and taking off for single-person escape devices, nor does it require the escape personnel to control the descent speed. Therefore, it is more suitable for special groups such as those who are timid and overweight.

[0025] 2. The present invention uses double-row chains. Utilizing the characteristic that double-row chains will not twist, the descending personnel always maintain one direction, avoiding the possibility that the legs ride into the chains due to body rotation and being tripped when landing.

[0026] 3. The setting of the sliding tube in the present invention solves the problem that when people grab the descending chain, they will be pulled downward by the chain, so their hands cannot exert upward force to lift their feet off the frame bottom plate.

[0027] 4. The present invention uses a first deceleration component and a second deceleration component to decelerate the first sprocket. The first deceleration component is a constant braking deceleration device, and the second deceleration component is a deceleration device that can automatically adjust the friction according to the total weight of the people on the chain that is constantly changing, solving the problem that when controlling the descending speed of the chain without external power, the increase or decrease in the number of people hanging on the chain affects the descending speed of the chain.

[0028] 5. The present invention uses a damping piston pump technical device and utilizes the characteristics of the damping holes to achieve the purpose of uniform speed.

[0029] 6. The present invention uses a chain tongue plate to ensure that when the outer frame is pushed out of the building, the chain pre-stored on the chain tongue plate automatically falls first, thereby driving other chains to fall quickly.

[0030] 7. The present invention uses a ratchet rotation device to ensure that when the chain rotates forward for escape personnel to use, the first deceleration component, the second deceleration component, the third deceleration uniform component and the lighting component all work normally, and when the chain on the storage frame needs to fall quickly, the chain can be quickly reversed to make the chain fall quickly.

[0031] 8. The lighting component set in the present invention can generate electricity automatically, solving the problem that when the escape device needs to be used at night, there is no power supply for lighting due to a power outage.

[0032] 9. The setting of the locking sprocket in the present invention solves both the problem of the pulling force of the self-gravity of the chain on the chain when the chain is stored on the lower chain support plate and the problem of controlling the chain to fall orderly from the upper layer when the chain falls freely.

[0033] 10. The positioning teeth on the chain support plate of the present invention can not only prevent the chain from sliding when being shaken, but also ensure that when the chain is pulled out, the upper layer of the chain is always pulled out first, avoiding the phenomenon of stacking and jamming.

[0034] 11. The annular chain has a certain distance from the outer wall of the building and will not cause abrasions to the escape personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram when the left light plate frame and the right storage frame are opened after the chain automatically falls when the outer frame of the present invention is pushed out of the building; Figure 2 is a schematic diagram of the locking sprocket, the anti-slip plate, the pulley bracket and the spare bracket after the left light plate frame and the right storage frame of the present invention are opened; Figure 3It is a schematic diagram of the connection between the left light board frame and the left frame in the present invention; Figure 4 It is a schematic diagram of the first locking component in the present invention; Figure 5 It is a schematic diagram of the second locking component in the present invention; Figure 6 It is a schematic diagram of the lowest-layer chain support plate and the fourth locking component in the present invention; Figure 7 It is a schematic diagram of the fourth locking rod, the pressing block, and the locking lifting spring in the present invention; Figure 8 It is a schematic diagram of the chain transmission mechanism inside the box body in the present invention; Figure 9 It is a schematic diagram of the second deceleration component in the present invention; Figure 10 It is a schematic diagram of the third deceleration and constant-speed component in the present invention; Figure 11 It is a schematic diagram of the ratchet component in the present invention; Figure 12 It is a schematic diagram of the first deceleration component in the present invention; Figure 13 It is a schematic diagram of the generator transmission mechanism in the present invention; Figure 14 It is a schematic diagram of the chain storage in the present invention; Figure 15 It is a schematic diagram of the locking mechanism between the left light board frame and the right storage frame in the present invention.

[0036] Description of the reference numerals: 1. Outer frame; 11. Left frame; 12. Right frame; 13. Cross beam; 14. Roller; 141. Track; 15. Frame bottom plate; 151. Chain tongue plate; 16. First locking assembly; 161. First locking rod; 162. First lever; 163. Locking sleeve; 164. First locking hole; 17. Second locking assembly; 171. Second locking rod; 172. First fixing block; 173. Mounting hole; 174. First spring; 175. Second locking hole; 176. Second lever; 2. Chain storage rack; 21. Left light plate frame; 211. Mounting rod; 212. Accommodating hole; 213. Cap; 214. Locking spring; 22. Right storage frame; 221. Pulley bracket; 222. Pulley; 23. Connecting assembly; 231. First connecting sleeve; 232. Second connecting sleeve; 233. Connecting rod; 234. Rotating rod; 24. Chain support plate; 241. Positioning tooth; 25. Side plate; 26. Third locking rod; 261. Third locking hole; 27. Fourth locking assembly; 271. Long plate; 272. Fourth locking rod; 273. Locking lifting spring; 274. Mounting cavity; 275. Pressing block; 276. Locking pressure plate; 28. Spare bracket; 281. Spare hole; 282. Locking sprocket; 283. Fixed rod; 284. Anti-slip plate; 3. Box body; 31. Slide pipe; 4. Chain drive mechanism; 41. First sprocket; 411. First transmission shaft; 412. First mounting block; 42. Second sprocket; 421. Second mounting block; 422. Second transmission shaft; 43. Third sprocket; 431. Third mounting block; 432. Third transmission shaft; 433. Floating slide rail; 434. Slide groove; 435. Adjustable limit rod; 436. First support spring; 437. Second support spring; 438. Third support spring; 44. Ratchet assembly; 441. Ratchet; 442. Pawl; 443. Tightening spring; 444. Third fixing block; 45. Reducer; 451. First gear; 452. Second gear; 453. Brake wheel; 46. First reduction assembly; 461. First friction belt; 462. First steel belt; 463. First tension adjusting rod; 464. First connecting plate; 465. First connecting hole; 466. First tension spring; 5. Second reduction assembly; 51. Second friction belt; 52. Second steel belt; 53. Bush; 54. Connecting block; 55. Second tension spring; 56. Second connecting hole; 57. Second tension adjusting rod; 58. Second connecting plate; 6. Balance assembly; 61. Balance gear; 62. Balance rack; 7. Third deceleration and constant speed assembly; 71. First mounting plate; 72. Hydraulic plunger pump; 73. Cam; 74. Second fixing block; 75. First rotating shaft; 76. Third gear; 77. Fourth gear; 78. Check valve; 79. Connecting pipe; 8. Lighting assembly; 81. Lighting lamp; 82. Generator; 83. Fourth transmission shaft; 84. Fourth mounting block; 85. Second chain; 851. First driving sprocket; 852. Second driving sprocket;86. Drive belt; 861. First pulley; 862. Second pulley. Detailed implementation mode

[0037] The following further elaborates on the present invention in conjunction with the Figure 1 - attached Figure 15 drawings for a more detailed description.

[0038] Referring to Figure 1 , Figure 2 and Figure 3 , the embodiment of the present invention discloses a multi - person shared non - powered circulating hanging chain high - rise emergency uniform speed descent machine, which includes an outer frame 1, a chain storage rack 2 and a box body 3. The box body 3 is fixed on the outer frame 1. The outer frame 1 is installed in the top floor of the building, and the front part of the outer frame 1 can extend out of the building. The outer frame 1 includes a left frame 11 and a right frame 12. A cross beam 13 is fixed between the left frame 11 and the right frame 12. The left frame 11, the right frame 12 and multiple cross beams 13 form a cuboid frame structure.

[0039] Rollers 14 are installed at both the bottom and the top of the outer frame 1. Tracks 141 are fixed on the floor and ceiling of the building, and the rollers 14 rotate along the tracks 141. Safety limit blocks for preventing the rollers 14 from disengaging are provided at both ends of the tracks 141. The box body 3 is fixed at the top of the front end between the left frame 11 and the right frame 12. When using the descent machine in case of a fire in the building, the front part of the outer frame 1 is pushed out of the building. A frame bottom plate 15 is fixed between the bottom of the left frame 11 and the bottom of the right frame 12. When the front part of the outer frame 1 is pushed out of the building, the box body 3 also extends out of the building, and there is no frame bottom plate 15 at the bottom part of the outer frame that is exposed outside the building.

[0040] The chain storage rack 2 is located inside the outer frame 1. The chain storage rack 2 includes a left light - board frame 21 and a right storage frame 22. The left light - board frame 21 is installed on the left frame 11 through a connecting component 23, and the right storage frame 22 is installed on the right frame 12 through a connecting component 23.

[0041] Referring to Figure 3 , Figure 4 and Figure 5 , the connecting component 23 includes a first connecting sleeve and a second connecting sleeve 232. The first connecting sleeve 231 is fixed on the left frame 11, and the second connecting sleeve 232 is fixed on the left light - board frame 21. An connecting rod 233 is provided above the first connecting sleeve 231 and the second connecting sleeve 232. Rotating rods 234 are fixed at the bottoms of both ends of the connecting rod 233. One of the rotating rods 234 is inserted into the first connecting sleeve 231 and can rotate along the axial direction of the first connecting sleeve 231. The other rotating rod 234 is inserted into the second connecting sleeve 232 and can rotate along the axial direction of the second connecting sleeve 232. A total of four groups of connecting components 23 are provided between the left light - board frame 21 and the left frame 11.

[0042] A connecting component 23 is also provided on the right storage frame 22. The right storage frame 22 and the right frame 12 are connected through the connecting component 23, and four groups of connecting components 23 are also provided between the right storage frame 22 and the right frame 12.

[0043] A plurality of chain supporting plates 24 arranged one above the other are fixed to the left side of the right storage frame 22 close to the left light plate frame 21, and the chains are stored on the chain supporting plates 24. A side plate 25 is fixed to one side of the left light plate frame 21 close to the right storage frame 22. A plurality of positioning teeth 241 are fixed to the chain supporting plates 24, and the plurality of positioning teeth 241 are uniformly arranged along the length direction of the chain supporting plates 24. When the chains are stored on the chain supporting plates 24, two layers of chains are folded and stored on each chain supporting plate 24. When the lower-layer chains are placed on the chain supporting plates 24, the positioning teeth 241 are inserted between adjacent rollers of the chains, so that the chains can be prevented from slipping out of the chain supporting plates 24, the stability of the chains is increased, and when the chains are pulled out of the chain supporting plates 24, the chains can be pulled out orderly, avoiding the phenomenon of stacking and jamming. The tops of the positioning teeth 241 do not exceed the tops of the lower-layer chains.

[0044] Under the action of the connecting component 23, the left light plate frame 21 and the right storage frame 22 can move back and forth in the direction of the box body 3, so that the left light plate frame 21 and the right storage frame 22 approach or separate from each other. When the left light plate frame 21 and the right storage frame 22 are closest to the box body 3, the left light plate frame 21 and the right storage frame 22 are in a closed and fitting state. After the left light plate frame 21 and the right storage frame 22 are closed, the side plate 25 of the left light plate frame 21 contacts the side wall of the chain supporting plate 24. When the left light plate frame 21 and the right storage frame 22 are farthest from the box body 3, the left light plate frame 21 and the right storage frame 22 are in an open state. At this time, only one person can pass between the left light plate frame 21 and the right storage frame 22, preventing secondary accidents caused by overcrowding of people.

[0045] A first locking component 16 is provided on the rear side wall of the left frame 11. The first locking component 16 includes a first locking rod 161, a first dial rod 162 and a locking sleeve 163. The locking sleeve 163 is fixed to the side wall of the left frame 11. The first dial rod 162 is fixed to the top of the first locking rod 161. The first locking rod 161 is inserted into the locking sleeve 163, and a first locking hole 164 is formed in the track 141 on the floor slab. The bottom of the first locking rod 161 is inserted into the first locking hole 164, thereby locking the entire outer frame 1.

[0046] A spiral inclined surface is provided at the top of the locking sleeve 163. When the first dial rod 162 is rotated so that the first dial rod 162 moves from the lowest point to the highest point of the spiral inclined surface, the first locking rod 161 disengages from the first locking hole 164. At this time, the outer frame 1 can be pushed forward until the outer frame 1 extends outside the building.

[0047] On the side wall of the left frame 11, a second locking assembly 17 is provided. The second locking assembly 17 includes a second locking rod 171 and a first fixing block 172. The first fixing block 172 is fixed on the side wall of the left frame 11. An installation hole 173 is opened at the bottom of the first fixing block 172, and the top of the second locking rod 171 is inserted into the installation hole 173. A first spring 174 is arranged in the installation hole 173, and a second lever 176 is fixed on the side wall of the second locking rod 171. A second locking hole 175 is opened on the track 141 on the floor slab. When the outer frame 1 extends to a predetermined position, under the action of the first spring 174, the bottom of the second locking rod 171 is inserted into the second locking hole 175, locking the outer frame 1 at the predetermined position. Under the action of the first spring 174, even if the outer frame 1 vibrates due to crowding or the like, the locking will not fail.

[0048] Horizontally arranged at the top of the front end of the left light board frame 21 is a third locking rod 26. An installation rod 211 is fixed on the left light board frame 21. A receiving hole 212 is opened at one end of the installation rod 211 away from the left light board frame 21. A locking spring 214 is arranged in the receiving hole 212. A cap 213 is arranged at one end of the installation rod 211 away from the left light board frame 21, and the cap 213 is threadedly connected to the installation rod 211. One end of the locking spring 214 is fixed in the receiving hole 212, and the other end of the locking spring 214 is fixed on the third locking rod 26. One end of the third locking rod 26 is located in the receiving hole 212, and the other end of the third locking rod 26 passes through the cap 213 and is inserted into a third locking hole 261 on the right storage frame 22.

[0049] When the left light board frame 21 and the right storage frame 22 are closed, the end of the third locking rod 26 away from the locking spring 214 is inserted into the third locking hole 261. At this time, if the right storage frame 22 does not move, the left light board frame 21 cannot be opened alone under the action of the third locking rod 26. However, when closing the left light board frame 21 and the right storage frame 22, according to the actual situation, the left light board frame 21 and the right storage frame 22 can be closed simultaneously, or the right storage frame 22 can be closed first and then the left light board frame 21.

[0050] On one side of the frame bottom plate 15 close to the front end of the outer frame 1, a chain tongue plate 151 is provided. The chain tongue plate 151 is hinged to the frame bottom plate 15. When the whole outer frame 1 is inside the building, the chain tongue plate 151 is horizontally lifted by the floor slab. The chain tongue plate 151 plays a role in supporting part of the chain. When the front end of the outer frame 1 is pushed out of the building, the chain tongue plate 151 rotates 90 degrees due to the loss of the support of the floor slab, and the chain tongue plate 151 is in a natural drooping state. The chain on the chain tongue plate 151 drops downward under the action of its own gravity.

[0051] Refer to Figure 2 、 Figure 6 、 Figure 7 andFigure 14 , a chain drive mechanism 4 is arranged inside the box body 3, a sliding tube 31 is fixed at the bottom of the box body 3, and the chain passes through the sliding tube 31 and then passes above the third sprocket 43. The chain then bypasses from the bottom of the second sprocket 42, then bypasses from the top of the first sprocket 41 from back to front, and finally hangs down along the side wall of the box body 3 to form a closed loop with the chain below the sliding tube 31.

[0052] The escape personnel hold the sliding tube 31 with both hands on the frame bottom plate 15, exert upward force with both hands, lift their feet, and gradually slide down from the sliding tube 31. When reaching the bottom of the sliding tube 31, they hold the chain with both hands. The setting of the sliding tube 31 solves the problem that when the escape personnel stand, their feet cannot be lifted off the frame bottom plate 15 when they hold the descending chain tightly with both hands. Relying on the body weight of the human body, the chain is pressed to descend, and under the action of the brake wheel 453 and the damping of the plunger pump, it descends slowly. When the head of the first escape personnel descends below the frame bottom plate 15, the second person holds the sliding tube 31 with both hands forward, lifts their feet, and slides down along the sliding tube 31, and so on until all the escape personnel descend to the ground along with the chain.

[0053] A pulley bracket 221 and a spare bracket 28 are fixed on one side of the right storage frame 22 close to the box body 3. A pulley 222 is rotatably connected to the pulley bracket 221. The radial center line position of the pulley 222 is aligned with the center line position of the double-row chain on the chain support plate 24. The front and back direction of the chain support plate 24 is the front end where the pulley bracket 221 of the right storage frame 22 is set. When the left light plate frame 21 and the right storage frame 22 are closed, the front tangent of the pulley 222 is aligned with the center line of the sliding tube 31. The highest position of the pulley 222 is lower than the lowest position of the sliding tube 31. The spare bracket 28 is located below the pulley bracket 221.

[0054] A spare hole 281 is provided on the spare bracket 28, and the spare hole 281 is used to install a traction sprocket with a speed reduction device, and the speed reduction device can be manually driven or driven by a motor. When storing the chain, the chain is bypassed around the traction sprocket, and the chain below the outer frame 1 can be easily lifted and stored in the chain support plate 24.

[0055] A locking sprocket 282 is fixed to one end of the spare support 28 away from the right storage frame 22. The locking sprocket 282 cannot rotate. A stop slide plate 284 is arranged at the corresponding position of the outer frame 1 to the locking sprocket 282. A fixing rod 283 is fixed to the side wall of the outer frame 1, and the stop slide plate 284 is fixed to the fixing rod 283. When the right storage frame 22 is in the closed state, the locking sprocket 282 pushes the chain below the sliding pipe 31 forward. The locking sprocket 282 and the stop slide plate 284 lock the chain on the locking sprocket 282, and the chain on the locking sprocket 282 cannot move up and down. Since the chain between the locking sprocket 282 and the stop slide plate 284 cannot slide on the locking sprocket 282, the traction sprocket can gradually pull the chain in the sliding pipe 31 out of the sliding pipe 31 and then place it on the chain support plate 24. When the chain freely falls, the locking sprocket 282 and the stop slide plate 284 ensure that the chain on the bottom layer chain support plate 24 will not be pulled out in advance; if the locking sprocket 282 and the stop slide plate 284 are not provided, when the weight of the hanging chain is greater than the resistance formed by the chain support plate 24 to the chain, the lower layer chain on the lower layer chain support plate 24 will be pulled out first, that is, the stacked double-layer chain will be pulled out at the same time, and the chain stacking and jamming phenomenon may occur.

[0056] When storing the chain, first install the chain traction sprocket on the spare support 28, and then push the right storage frame 22 forward to a position where the stop slide plate 284 is close to the locking sprocket 282. At this time, the hanging rear chain is clamped between the stop slide plate 284 and the locking sprocket 282 and cannot slide. Start the chain traction device, gradually pull the chain out from the lower end of the sliding pipe 31, and start laying from the bottommost chain support plate 24. At this time, under the pressure of the chain weight, the fourth locking rod 272 extends out and inserts into the fourth locking hole on the frame bottom plate 15 to lock the right storage frame 22 and the frame bottom plate 15. When there is a small amount of remaining chain, stack the small amount of remaining chain on the chain tongue plate 151, remove the traction sprocket, and push the left light plate frame 21 forward. After the left light plate frame 21 and the right storage frame 22 are fitted, the third locking rod 26 locks the left light plate frame 21 on the right storage frame 22, and the chain storage work is completed.

[0057] When storing the chain, the chain is distributed from the bottommost chain support plate 24 to the topmost chain support plate 24. Two layers of chains are arranged on each chain support plate 24. The chain extends from one side of the chain support plate 24 close to the chain tongue plate 151 to the side of the chain support plate 24 away from the chain tongue plate 151, and then returns and continues to bend upward to the previous chain support plate 24. When storing the chain, a small amount of chain is stacked on the chain tongue plate 151 to ensure that after the chain tongue plate 151 loses the support for the chain, the chain can drive the chain transmission mechanism 4 to operate under the action of sufficient gravity.

[0058] When the chain tongue plate 151 automatically droops, the chain stacked on the chain tongue plate 151 loses support and slides downward under the action of gravity. Since the positioning teeth 241 are fixed to the bottom of the chain support plate 24 and the locking sprocket 282 is fixed to the spare bracket 28, when the chain slides downward, the chain on the topmost chain support plate 24 slides first, and for the double-layer chain on each chain support plate 24, the upper layer of the chain is always pulled out first.

[0059] A fourth locking assembly 27 is provided on the bottommost chain support plate 24. The fourth locking assembly 27 can lock the right storage frame 22 and the frame bottom plate 15 under the action of the gravity of the chain, so that the right storage frame 22 cannot be pulled backward. Only after the chain on the locking pressure plate 276 is pulled out, the fourth locking assembly 27 is opened, and then the right storage frame 22 can be pulled backward.

[0060] The fourth locking assembly 27 includes a long strip plate 271, a fourth locking rod 272 and a locking lifting spring 273. The long strip plate 271 is fixed to the bottom of the lowermost chain support plate 24. An installation cavity 274 is formed inside the long strip plate 271. The locking lifting spring 273 is located inside the installation cavity 274. The top of the locking lifting spring 273 is fixed with a pressing block 275, and the bottom of the locking lifting spring 273 is fixed to the bottom wall of the installation cavity 274. The top of the pressing block 275 passes through the chain support plate 24.

[0061] The fourth locking rod 272 is fixed to the bottom of the pressing block 275. The bottom of the fourth locking rod 272 extends out of the long strip plate 271. A fourth locking hole for inserting the fourth locking rod 272 is formed on the bottom plate. A locking pressure plate 276 is provided on the top of the pressing block 275. One side of the locking pressure plate 276 close to the positioning teeth 241 of the chain support plate 24 is hinged to the positioning teeth 241, and the top of the pressing block 275 contacts the bottom of the locking pressure plate 276. When there is no chain pressing on the locking pressure plate 276, the locking pressure plate 276 is lifted by the pressing block 275, the fourth locking rod 272 is disengaged from the fourth locking hole, and one side of the locking pressure plate 276 close to the positioning teeth 241 is low and the side far from the positioning teeth 241 is high.

[0062] When the chain is stored on the chain support plate 24, the chain exerts pressure on the locking pressure plate 276. Under the action of the chain pressure, the fourth locking rod 272 is inserted into the fourth locking hole on the frame bottom plate 15. At this time, the right storage frame 22 and the outer frame 1 are in a locked state. If the bottommost chain does not leave the chain support plate 24, the right storage frame 22 cannot be opened.

[0063] After the front end of the outer frame 1 is pushed out of the building, the chain tongue plate 151 rotates 90 degrees, and the chain on the chain tongue plate 151 drops downward under the action of gravity. As the chain on the chain tongue plate 151 drops, the chain on the topmost chain support plate 24 will be pulled out, and then the chain on the lower chain support plate 24 will also be pulled out accordingly. After all the chains are separated from the chain support plate 24, the fourth locking rod 272 is disengaged from the fourth locking hole, and at this time, the left light plate frame 21 and the right storage frame 22 can be pulled backward to open.

[0064] Referring to Figures 8 - 14 , the chain drive mechanism 4 includes a first sprocket 41, a second sprocket 42, and a third sprocket 43. A first transmission shaft 411 is connected to the first sprocket �1. The first transmission shaft 411 passes through the center of the first sprocket 41. Both ends of the first transmission shaft 411 are provided with first mounting blocks 412, and the first mounting blocks 412 are fixed on the side wall of the box body 3. The first transmission shaft 411 is rotatably connected to the first mounting blocks 412. The chain is set as a double-row chain, and the double-row chain can avoid the phenomenon of chain torsion, and to the greatest extent ensure that the escaping personnel will not turn and straddle the chain when falling.

[0065] The second sprocket 42 is located below the first sprocket 41. Both sides of the second sprocket 42 are provided with second mounting blocks 421, and the second mounting blocks 421 are fixed on the side wall of the box body 3. A second transmission shaft 422 is fixed on the second sprocket 42, and the second rotating shaft is rotatably connected to the second mounting blocks 421.

[0066] The third sprocket 43 is located above the rear side of the second sprocket 42. Both sides of the third sprocket 43 are provided with third mounting blocks 431, and a third transmission shaft 432 is fixed on the third sprocket 43. The third transmission shaft 432 is rotatably connected to the third mounting blocks 431. Floating slide rails 433 are arranged on the front and rear sides of each third mounting block 431, and the floating slide rails 433 are fixed on the side wall and the bottom wall of the box body 3. Sliding grooves 434 are formed on the front and rear side walls of the third mounting block 431, and the tracks of the floating slide rails 433 are inserted into the sliding grooves 434, and the third mounting block 431 can slide up and down along the floating slide rails 433.

[0067] An adjustable stopper rod 435 is fixed to the bottom of each third mounting block 431. The bottom of each adjustable stopper rod 435 is a threaded rod that passes through the bottom plate of the housing 3 and is threadedly connected to a nut. Adjusting the nut allows the height of the third mounting block 431 to be adjusted. A first support spring 436 is fixed between the third mounting block 431 and the bottom plate of the housing 3. The first support spring 436 is sheathed with a second support spring 437, which in turn is sheathed with a third support spring 438. The bottoms of both the second and third support springs 437 and 438 are fixed to the bottom wall of the housing 3. The top of the second support spring 437 is lower than the top of the first support spring 436, and the top of the third support spring 438 is lower than the top of the second support spring 437. Adjusting the nut of the adjustable stopper rod 435 adjusts the pressure exerted by the third mounting block 431 on the first support spring 436. The chain extends upward from the sliding tube 31 at the bottom of the box body 3, passes over the third sprocket 43, then passes under the second sprocket 42, then passes over the first sprocket 41, and then extends downward to form a closed loop.

[0068] A ratchet assembly 44 is provided on the first transmission shaft 411. The ratchet assembly 44 includes a ratchet 441, a pawl 442, and a retaining spring 443. The ratchet 441 is fixed to the first transmission shaft 411. One end of the pawl 442 is rotatably connected to the first sprocket 41, and the other end of the pawl 442 is inserted into the teeth of the ratchet 441. A third fixing block 444 is fixed to the first sprocket 41, and the retaining spring 443 is fixed between the third fixing block 444 and the pawl 442. The retaining spring 443 and the third fixing block 444 in this embodiment can also be replaced with a torsion spring placed on the rotating shaft of the pawl 442 to force the pawl 442 against the ratchet 441. When the chain in the slide tube 31 is pulled downward, the first sprocket 41 rotates forward, driving the first transmission shaft 411 to rotate. When the first sprocket 41 rotates counterclockwise, the first transmission shaft 411 does not rotate with the first sprocket 41.

[0069] The housing 3 is provided with a reduction gear for decelerating the first transmission shaft 411. The reduction gear comprises a reducer 45 fixed to the side wall of the housing 3. A first gear 451 is mounted on the input shaft of the reducer 45. A second gear 452 is mounted on the end of the first transmission shaft 411 near the reducer 45, and the first gear 451 meshes with the second gear 452. A brake wheel 453 is fixed to the output shaft of the reducer 45. The brake wheel 453 is provided with a first reduction assembly 46 and a second reduction assembly 5. The first reduction assembly 46 provides a constant braking force for the brake wheel 453, and the second reduction assembly 5 automatically adjusts the friction force of the brake wheel 453 according to the changing total weight of the evacuees.

[0070] The first deceleration component 46 includes a first friction belt 461. The first friction belt 461 bypasses the brake wheel 453. A first steel belt 462 is fixed to the outer periphery of the first friction belt 461. One end of the first steel belt 462 is fixed to the inner wall of the box body 3. A first tension adjusting rod 463 is fixed to the side wall of the box body 3. The first tension adjusting rod 463 is a threaded rod. A first connecting plate 464 is provided at the end of the first tension adjusting rod 463 away from the side wall of the box body 3. The first tension adjusting rod 463 passes through the first connecting plate 464.

[0071] First connecting holes 465 are formed in both the first connecting plate 464 and the first steel belt 462. A first tension spring 466 is provided between the first steel belt 462 and the first connecting plate 464. One end of the first tension spring 466 is hooked in the first connecting hole 465 on the first steel belt 462, and the other end of the first tension spring 466 is hooked in the first connecting hole 465 on the first connecting plate 464. When the speed reducer 45 rotates, the first friction belt 461 can decelerate the speed reducer 45. By adjusting the first tension adjusting rod 463, the friction force between the first friction belt 461 and the brake wheel 453 can be adjusted, thereby adjusting the rotational speed.

[0072] The second deceleration component 5 includes a second friction belt 51 and a second steel belt 52. The second steel belt 52 is fixed to the outside of the second friction belt 51. The second friction belt 5l bypasses the brake wheel 453. A bushing 53 is sleeved on the third transmission shaft 432. A connecting block 54 is fixed to the bushing 53. A second tension spring 55 is provided between the second steel belt 52 and the connecting block 54. Second connecting holes 56 are formed in both the second steel belt 52 and the connecting block 54. One end of the second tension spring 55 is hooked in the second connecting hole 56 on the second steel belt 52, and the other end of the second tension spring 55 is hooked in the second connecting hole 56 on the connecting block 54.

[0073] A second tension adjusting rod 57 is fixed to the bottom of the box body 3. A second connecting plate 58 is provided on the second tension adjusting rod 57. The second tension adjusting rod 57 passes through the second connecting plate 58 and is threadedly connected with a nut. One end of the second steel belt 52 away from the second tension spring 55 is fixed to the second connecting plate 58. By adjusting the nut on the second tension adjusting rod 57, the friction force between the second friction belt 51 and the brake wheel 453 when the third transmission shaft 432 is static can be adjusted.

[0074] Balance components 6 are provided at both ends of the third transmission shaft 432. The balance components 6 include balance gears 61 and balance racks 62. The balance gears 61 are fixedly connected to the third transmission shaft 432. The bottom of the balance racks 62 is fixed to the bottom wall of the box body 3. The balance gears 61 are meshed with the balance racks 62.

[0075] When the number of escape personnel on the chain gradually increases, since the downward force on the chain will also gradually increase, the third mounting block 431 will be pulled downward. At this time, the second support spring 437 and the third support spring 438 will come into play to support the third mounting block 431. When the third mounting block 431 moves downward, it will pull the second tension spring 55, and the second tension spring 55 will pull the second friction belt 51 to squeeze the brake wheel 453, thereby decelerating. The setting of multiple support springs not only increases the friction force on the brake wheel 453 when there are many people, so as to achieve the purpose of deceleration, but also does not cause the brake to lock due to excessive pressure when there are many people.

[0076] On the side of the first transmission shaft 411 away from the speed reducer 45, there is a third deceleration and constant-speed component 7. The third deceleration and constant-speed component 7 includes a first mounting plate 71, a hydraulic piston pump 72, and a cam 73. The first mounting plate 71 is fixed on the side wall of the box body 3. A second fixing block 74 is fixed on the first mounting plate 71. A first rotating shaft 75 is arranged on the second fixing block 74. The first rotating shaft 75 is rotatably connected to the second fixing block 74. The first rotating shaft 75 passes through the second fixing block 74 and the first mounting plate 71. One end of the first rotating shaft 75 close to the first transmission shaft 411 is fixed with a third gear 76. One end of the first transmission shaft 411 close to the first rotating shaft 75 is fixed with a fourth gear 77. The third gear 76 meshes with the fourth gear 77, so that the first transmission shaft 411 drives the first rotating shaft 75 to rotate. The number of teeth of the third gear 76 is more than that of the fourth gear 77.

[0077] Four or more hydraulic piston pumps 72 are fixed on the first mounting plate 71. The four hydraulic piston pumps 72 are evenly distributed along the circumferential direction of the first rotating shaft 75. One end of the first rotating shaft 75 away from the third gear 76 is fixed to the cam 73. A connecting pipe 79 is arranged between two adjacent hydraulic piston pumps 72. The four hydraulic piston pumps 72 are communicated through the connecting pipe 79. A one-way valve 78 is installed on each connecting pipe 79. In the hydraulic oil circuit, only one hydraulic piston pump 72 has no hydraulic oil. When the cam 73 rotates, the cam 73 will squeeze one of the hydraulic piston pumps 72, and squeeze the hydraulic oil in this hydraulic piston pump 72 into the previous hydraulic piston pump 72.

[0078] When the cam 73 squeezes the hydraulic piston pump 72, due to the function of the one-way valve 78, the hydraulic oil in the hydraulic piston pump 72 can only flow out through the damping hole and enter the hydraulic piston pump 72 without hydraulic oil through the connecting pipe 79. Since the damping hole limits the speed of the hydraulic oil discharged from the pump body of the hydraulic piston pump 72, the rotation speed of the cam 73 is reduced, and the values of all damping holes are the same, so the flow rates are the same, thus achieving the purpose of speed reduction and constant speed.

[0079] The damping hole is arranged between the oil outlet of the hydraulic piston pump 72 and the one-way valve 78. When the piston is extruded, the hydraulic oil in the hydraulic piston pump 72 enters the one-way valve 78 through the damping hole. The pressure of the hydraulic oil opens the one-way valve 78, and then enters the previously emptied hydraulic piston pump 72 through the connecting pipe 79. After the hydraulic oil in the connecting pipe 79 at the oil inlet of the hydraulic piston pump 72 enters the one-way valve 78, the one-way valve 78 is closed, and the hydraulic oil in the hydraulic piston pump 72 can only flow out through the damping hole.

[0080] A lighting assembly 8 is arranged in the box body 3. The lighting assembly 8 includes a lighting lamp 81 and a generator 82. The lighting lamp 81 is fixed on the bottom wall of the box body 3. A lighting hole is opened on the bottom wall of the box body 3, and the light passes through the lighting hole to provide lighting for the escaping personnel. A fourth transmission shaft 83 is arranged below the first transmission shaft 411. Fourth mounting blocks 84 are arranged on both sides of the fourth transmission shaft 83. The fourth mounting blocks 84 are mounted on the side wall of the box body 3, and the fourth transmission shaft 83 is rotatably connected to the fourth mounting blocks 84.

[0081] A first driving sprocket 851 is fixed on the first transmission shaft 411, and a second driving sprocket 852 is fixed on the fourth transmission shaft 83. The diameter of the first driving sprocket 851 is much larger than that of the second driving sprocket 852. A second chain 85 is connected between the first driving sprocket 851 and the second driving sprocket 852. A first pulley 861 is fixed on the fourth transmission shaft 83, and a second pulley 862 is fixed on the rotating shaft of the generator 82. The first pulley 861 is much larger than the second pulley 862. The first pulley 861 and the second pulley 862 are connected by a driving belt 86. When the first transmission shaft 411 rotates, it drives the second transmission shaft 422 and the generator 82 to rotate at an increased speed, drives the generator 82 to generate electricity, and the generator 82 supplies power to the lighting lamp 81.

[0082] The implementation principle of a multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed descending machine of the present invention is as follows: S1. When a fire breaks out in a building and the descending machine needs to be used, rotate the first lever 162 so that the first lever 162 moves upward along the spiral inclined surface, and the first locking rod 161 is disengaged from the first locking hole 164.

[0083] S2. Push the outer frame 1 forward so that the front end of the outer frame 1 extends outside the building until the second locking rod 171 is inserted into the second locking hole 175. At this time, the outer frame 1 can neither move forward nor move backward.

[0084] S3. When the second locking lever 171 is inserted into the second locking hole 175, the chain tongue plate 151 fully extends outside the building. The chain tongue plate 151 rotates 90 degrees, and the chain on the chain tongue plate 151 slides downward. After the chain stacked on the chain tongue plate 151 freely falls, the falling chain drives the first sprocket 41, the second sprocket 42, and the third sprocket 43 to rotate in the reverse direction under the action of gravity, so that the chain stored on the chain support plate 24 is sequentially pulled out and dropped until all the chains are vertically hung at the lower part of the box body 3, and the lowest end of the chain is close to the ground.

[0085] S4. Pull the left light plate frame 21 and the right storage frame 22 backward. When the left light plate frame 21 and the right storage frame 22 are fully opened, the distance between the left light plate frame 21 and the right storage frame 22 can only accommodate one person to pass through. This passage can not only allow a single person to pass through, but also prevent overcrowding caused by multiple people scrambling for the passage.

[0086] S5. The first escapee in the passage between the left light plate frame 21 and the right storage frame 22 holds the sliding tube 31 with both hands, and forces both hands to lift the body upward, so that the feet leave the frame bottom plate 15, and slowly slide down along the sliding tube 31. When the hands leave the sliding tube 31, the hands naturally grip the chain and descend with the chain.

[0087] S6. When the head of the first escapee drops below the frame bottom plate 15, the second escapee immediately steps forward and holds the sliding tube 31 with both hands, leaves the frame bottom plate 15 with both feet and slides down, and so on until everyone has landed on the ground.

[0088] S7. When the feet of the escapee hanging on the chain touch the ground, quickly release both hands and evacuate to vacate the landing space for the next escapee.

[0089] S8. Although the rappel device is set on the top floor, at the relative position where the chain hangs down, an escape door can be preset on each floor. After opening, one can grab the chain and descend to escape.

[0090] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descent machine, characterized in that: It includes a box body (3) and an outer frame (1) whose front end can extend outside the building. The box body (3) is fixed to the top of the front end of the outer frame (1). After the front end of the outer frame (1) extends outside the building, the box body (3) is located outside the building, and a chain drive mechanism (4) is arranged inside the box body (3). The chain drive mechanism (4) includes a first sprocket (41), a second sprocket (42) and a third sprocket (43). A first transmission shaft (411) is connected to the first sprocket (41), and the first transmission shaft (411) is installed on the side wall of the box body (3). The second sprocket (42) is located below the first sprocket (41), and the second sprocket (42) is installed on the side wall of the box body (3). The third sprocket (43) is located above the rear side of the second sprocket (42). A third transmission shaft (432) is fixed to the third sprocket (43). Third mounting blocks (431) are arranged on both sides of the third sprocket (43) on the third transmission shaft (432). Floating slide rails (433) fixed to the bottom wall of the box body (3) are arranged before and after each third mounting block (431). The third mounting block (431) is slidably connected to the floating slide rail (433). A first support spring (436) is fixed between the bottom of the third mounting block (431) and the inner wall of the box body (3). The chain extends from the bottom of the box body (3) into the box body (3), first bypasses the top of the third sprocket (43), then bypasses the bottom of the second sprocket (42), then bypasses the top of the first sprocket (41), and then extends downward out of the box body (3); A speed reduction device for automatically adjusting the rotation speed of the first transmission shaft (411) according to the total weight of the escape personnel on the chain is connected to the first transmission shaft (411).

2. The multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descending machine according to claim 1, wherein: The speed reduction device includes a speed reducer (45), a brake wheel (453), a first speed reduction component (46) and a second speed reduction component (5). The speed reducer (45) is fixed to the inner wall of the box body (3). The input shaft of the speed reducer (45) is connected to the first transmission shaft (411) through gears. The output shaft of the speed reducer (45) is fixed to the brake wheel (453). The first speed reduction component (46) includes a first friction belt (461) and a first tension adjusting rod (463). The first friction belt (461) bypasses the top of the brake wheel (453). One end of the first friction belt (461) is connected to the inner side wall of the box body (3). One end of the first tension adjusting rod (463) is fixed to the inner side wall of the box body (3). The other end of the first tension adjusting rod (463) is connected to a first connecting plate (464). A first tension spring (466) is connected between the first connecting plate (464) and the first friction belt (461); The second deceleration assembly (5) includes a second friction belt (51), a bushing (53) and a second tension spring (55). The bushing (53) is sleeved on the third transmission shaft (432). A second tension spring (55) is connected between the second friction belt (51) and the bushing (53). The second friction belt (51) bypasses from the top of the brake wheel (453). A second tension adjusting rod (57) is fixed on the bottom wall of the box body (3). A second connecting plate (58) is connected to the second tension adjusting rod (57). One end of the second friction belt (51) away from the second tension spring (55) is connected to the second connecting plate (58). A balance assembly (6) is installed in the box body (3) to keep both ends of the third transmission shaft (432) always horizontal when the third transmission shaft (432) moves up and down.

3. The multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descending machine according to claim 2, wherein: The deceleration device further includes a third deceleration and uniform speed assembly (7). The third deceleration and uniform speed assembly (7) includes a first mounting plate (71), a hydraulic piston pump (72) and a cam (73). The first mounting plate (71) is fixed on the inner side wall of the box body (3). A first rotating shaft (75) is rotatably connected to the first mounting plate (71). The first rotating shaft (75) is connected to the first transmission shaft (411) through gears. After passing through the first mounting plate (71), the first rotating shaft (75) is fixed to the cam (73). A plurality of hydraulic piston pumps (72) evenly distributed along the first rotating shaft (75) are fixed on the first mounting plate (71). A connecting pipe (79) is connected between two adjacent hydraulic piston pumps (72). A check valve (78) is installed on the connecting pipe (79). When the cam (73) rotates, it can squeeze the piston rod of the hydraulic piston pump (72), and discharge the hydraulic oil in the squeezed hydraulic piston pump (72) into the hydraulic piston pump (72) in another cavity through a damping hole and the connecting pipe (79).

4. The multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descent machine according to claim 2 or 3, characterized in that: A lighting assembly (8) is arranged in the box body (3). The lighting assembly (8) includes a lighting lamp (81) and a generator (82). The lighting lamp (81) is fixed on the bottom wall of the box body (3). A lighting hole is opened on the bottom wall of the box body (3). The light passes through the lighting hole to provide lighting for the escaping personnel. The generator (82) is electrically connected to the lighting lamp (81). The rotating shaft of the generator (82) is in transmission connection with the first transmission shaft (411). When the first transmission shaft (411) rotates, it drives the rotating shaft of the generator (82) to rotate.

5. The multi-person shared non-powered cyclic hanging chain high-rise emergency uniform speed slow descent machine according to claim 1, characterized in that, A second support spring (437) and a third support spring (438) are arranged below the third mounting block (431). The second support spring (437) is sleeved outside the first support spring (436). The third support spring (438) is sleeved outside the second support spring (437). The bottoms of the second support spring (437) and the third support spring (438) are both fixed on the bottom wall of the box body (3). The top of the second support spring (437) is lower than the top of the first support spring (436). The top of the third support spring (438) is lower than the top of the second support spring (437).

6. The multi-person shared non-powered cyclic hanging chain high-rise emergency uniform speed slow descent machine according to claim 1, characterized in that, A sliding pipe (31) is fixed at the bottom of the box body (3). The chain passes through the sliding pipe (31) and then passes above the third sprocket (43). The chain is a double-row chain.

7. The multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descent machine according to claim 1, characterized in that, Tracks (141) are fixed on both the top plate and the bottom plate of the building. Rollers (14) capable of moving along the tracks (141) are installed at both the top and the bottom of the outer frame (1). A first locking component (16) for fixing the outer frame (1) when the front end of the outer frame (1) does not extend outside the building is arranged on the side wall of the outer frame (1); A second locking component (17) for fixing the outer frame (1) when the front end of the outer frame (1) extends outside the building is arranged on the side wall of the outer frame (1).

8. The multi-person shared non-powered cyclic hanging chain high-rise emergency uniform speed slow descent machine according to claim 1 or 6, characterized in that, The outer frame (1) includes a left frame (11) and a right frame (12). A cross beam (13) is fixed between the left frame (11) and the right frame (12). The left frame (11), the right frame (12) and a plurality of cross beams (13) form a cuboid frame structure; A chain storage rack (2) is arranged between the left frame (11) and the right frame (12). The chain storage rack (2) includes a left light plate frame (21) and a right storage frame (22). A total of four groups of connecting components (23) are arranged between the left light plate frame (21) and the left frame (11). Four groups of connecting components (23) are also arranged between the right storage frame (22) and the right frame (12); Through the four groups of connecting components (23), the left light plate frame (21) and the right storage frame (22) can be opened and closed. When opened, the left light plate frame (21) and the right storage frame (22) move backward and separate. When closed, the left light plate frame (21) and the right storage frame (22) move forward and approach; A plurality of chain supporting plates (24) evenly distributed up and down are fixed on the right storage frame (22). When the right storage frame (22) is closed, the chain supporting plates (24) are aligned with the sliding tubes (31); A pulley bracket (221) is fixed on one side of the right storage frame (22) close to the box body (3). A pulley (222) is installed on the pulley bracket (221). A frame bottom plate (15) is fixed between the bottom of the left frame (11) and the bottom of the right frame (12). One side of the frame bottom plate (15) is rotatably connected with a chain tongue plate (151). After the front end of the outer frame (1) extends outside the building, the chain tongue plate (151) rotates 90 degrees and is in a natural hanging state; After the chain is stored, the chain passes through the sliding tube (31) from below the sliding tube (31) and enters the box body (3). The chain passes through the third sprocket (43), the second sprocket (42) and the first sprocket (41) in sequence, and then passes through the bottom of the box body (3). After being stacked on the chain tongue plate (151) for several layers, it is stored on the chain supporting plate (24). The chain is stacked upwards in sequence on the bottommost chain supporting plate (24). Two layers of chains are placed on each chain supporting plate (24); A plurality of positioning teeth (241) are fixed on the chain supporting plate (24). The positioning teeth (241) are inserted between adjacent rollers of the lower layer of the chain; After the chain extends from the topmost chain supporting plate (24), it passes through the bottom of the pulley (222) and forms a closed loop with the chain below the sliding tube (31).

9. The multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descending machine according to claim 8, characterized in that, A spare bracket (28) is fixed on the right storage frame (22). The spare bracket (28) is located below the pulley bracket (221). One end of the spare bracket (28) away from the right storage frame (22) is fixed with a non-rotatable locking sprocket (282). A stop plate (284) is arranged on one side of the locking sprocket (282). A fixed rod (283) is fixed on the side wall of the outer frame (1). The stop plate (284) is fixed to the fixed rod (283). When the locking sprocket (282) approaches the stop plate (284), the chain sandwiched between the stop plate (284) and the locking sprocket (282) is locked on the locking sprocket (282). A ratchet assembly (44) is arranged on the first transmission shaft (411), including a ratchet (441), a ratchet pawl (442) and a pressing spring (443). The ratchet (441) is fixed on the first transmission shaft (411). One end of the ratchet pawl (442) is rotatably connected to the first sprocket (41). The other end of the ratchet pawl (442) is inserted into the teeth of the ratchet (441). A third fixing block (444) is fixed on the first sprocket (41). The pressing spring (443) is fixed between the third fixing block (444) and the ratchet pawl (442).

10. The multi-person shared non-powered circulating hanging chain high-rise emergency uniform speed slow descent machine according to claim 9, characterized in that, A traction sprocket with a speed reduction device is detachably connected to the spare bracket (28). A third locking rod (26) is horizontally arranged at the top of the front end of the left light plate frame (21). An installation rod (211) is fixed on the left light plate frame (21). A receiving hole (212) is opened at one end of the installation rod (211) away from the left light plate frame (21). A locking spring (214) is arranged in the receiving hole (212). A cap (213) is arranged at one end of the installation rod (211) away from the left light plate frame (21). The cap (213) is threadedly connected to the installation rod (211). One end of the locking spring (214) is fixed to the hole wall of the receiving hole (212). The other end of the locking spring (214) is fixed to the third locking rod (26). One end of the third locking rod (26) is located in the receiving hole (212). The other end of the third locking rod (26) passes through the cap (213) and is inserted into the third locking hole (261) on the right storage frame (22). A fourth locking assembly (27) for locking the right storage frame (22) and the frame bottom plate (15) under the action of the gravity of the chain is arranged on the bottommost chain support plate (24). The fourth locking assembly (27) includes a long strip plate (271), a fourth locking rod (272) and a locking lifting spring (273). The long strip plate (271) is fixed to the bottom of the chain support plate (24). An installation cavity (274) is opened inside the long strip plate (271). The locking lifting spring (273) is located inside the installation cavity (274). The top of the locking lifting spring (273) is fixed with a pressing block (275). The bottom of the locking lifting spring (273) is fixed to the bottom wall of the installation cavity (274). The top of the pressing block (275) passes through the chain support plate (24). The fourth locking lever (272) is fixed to the bottom of the pressing block (275). The bottom of the fourth locking lever (272) extends out of the long strip plate (271). A fourth locking hole for inserting the fourth locking lever (272) is formed in the frame bottom plate (15). A locking pressure plate (276) is arranged on the top of the pressing block (275). One side of the locking pressure plate (276) close to the positioning tooth (241) of the chain supporting plate (24) is hinged to the positioning tooth (241). The top of the pressing block (275) is in contact with the bottom of the locking pressure plate (276). When there is no chain pressing on the locking pressure plate (276), the side of the locking pressure plate (276) close to the positioning tooth (241) is low, and the side far from the positioning tooth (241) is high.

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