WO2023024326A1 - Sac à dos d'évacuation pour haute altitude et son dispositif de commande de descente doté d'une corde rétractable - Google Patents

Sac à dos d'évacuation pour haute altitude et son dispositif de commande de descente doté d'une corde rétractable Download PDF

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Publication number
WO2023024326A1
WO2023024326A1 PCT/CN2021/136716 CN2021136716W WO2023024326A1 WO 2023024326 A1 WO2023024326 A1 WO 2023024326A1 CN 2021136716 W CN2021136716 W CN 2021136716W WO 2023024326 A1 WO2023024326 A1 WO 2023024326A1
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WO
WIPO (PCT)
Prior art keywords
hub
rope
main shaft
guide
plane
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PCT/CN2021/136716
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English (en)
Chinese (zh)
Inventor
冯铭
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金华捷科工具有限公司
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Application filed by 金华捷科工具有限公司 filed Critical 金华捷科工具有限公司
Publication of WO2023024326A1 publication Critical patent/WO2023024326A1/fr

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
    • A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/18—Other single parts for rope lowering-devices, e.g. take-up rollers for ropes, devices for shooting ropes

Definitions

  • the invention belongs to the technical field of escape equipment, and in particular relates to a high-altitude escape backpack and a retractable rope descending device thereof.
  • the existing slow-descent escape equipment does not limit the exit position of the rope, resulting in poor balance and low safety of the slow-descent escape equipment; and the current slow-descent escape equipment cannot be recovered in time after work, and can only be used by a single person. And in high-rise buildings, it is impossible for everyone to configure them individually, therefore, this defect of the escape device limits its popularization and application, and increases the cost of use.
  • a rope retrievable descending device comprising
  • the hub is rotatably mounted on the fixed frame and is used for winding the rope;
  • a fixing groove is arranged on the hub and is used for fixing the end of the rope
  • a guide mechanism for guiding the rope is also provided on the fixed frame, and the guide mechanism includes a first roller set and a second roller set, and the first roller set and the second roller set are vertically arranged; the first roller set and the second roller set are vertically arranged;
  • the roller set is composed of two first guide rollers arranged in parallel;
  • the second roller set is composed of two second guide rollers arranged in parallel, and the second guide roller for rope winding is rotatably sleeved with a bushing ;
  • the distance between the inner walls on one side is L1
  • the distance between the axis of the first guide roller on the side away from the user and the inner wall on the side of the fixing frame close to the user is L2, wherein
  • the inner wall of the hub is provided with a first damping part
  • the centrifugal block is provided with a second damping part matched with the first damping part
  • the plane coincident with the axis of the hub is used as the first reference plane, so as to
  • the first reference plane is used as a section of the centrifugal deceleration mechanism.
  • the angle formed by the waists on both sides of the first damping part is ⁇
  • the angle formed by the side walls on both sides of the second damping part is ⁇ , where ⁇ ⁇ 1.2 ⁇ .
  • side plates are provided on both sides of the hub; a braking device is installed on the fixing frame to cooperate with the side plates to brake the hub; a battery for powering the braking device is installed on the fixing frame.
  • the main shaft is associated with the guide rod through a one-way clutch assembly to drive the guide rod to rotate in one direction;
  • the one-way clutch assembly includes a one-way bearing sleeved on the main shaft and a one-way bearing sleeved on the one-way bearing.
  • the inner ring of the one-way bearing is engaged with the main shaft in anti-rotation, and the outer ring of the one-way bearing is engaged with the collar in anti-rotation, and the end of the guide rod facing the main shaft is connected with the collar.
  • two sets of one-way clutch assemblies are provided, and two guide rods are matched with the same centrifugal block, and the two guide rods correspond to two sets of one-way clutch assemblies; and/or the main shaft A first enlarged diameter portion is provided on the top, and the one-way bearings of the two sets of one-way clutch assemblies are symmetrically arranged on both sides of the first enlarged diameter portion.
  • a baffle is provided at the end of the collar away from the first diameter-expanding part, and screws/bolts are used to pass through one of the baffles, two collars and the other baffle in turn and then fixed by bolts; and/or the An elastic piece is sheathed on the guide rod, and one end of the elastic piece is connected with the outer circumference of the collar, and the other end is connected with the centrifugal block.
  • the mass of the storage battery is set to m1
  • the mass of the braking device is set to m2
  • the plane perpendicular to the axis of the hub is taken as the second reference plane
  • the straight line intersecting and perpendicular to the axis of the hub is set as the first reference line R1
  • the projection point of the center of the smallest spherical surface that can completely cover the battery on the second reference plane is E1
  • the vertical distance from E1 to the first reference line R1 is L4
  • the center of the smallest spherical surface that can completely cover the brake device is at
  • the projected point on the second datum plane is E2
  • the transmission mechanism includes a ring gear arranged on the inner wall of the hub, a plurality of planetary gears respectively meshing with the ring gear, and a sun gear sleeved on the main shaft and engaged with the main shaft to prevent rotation.
  • the gear meshes with multiple planetary gears simultaneously.
  • the present invention also discloses a high-altitude escape backpack, including the rope retrievable descending device described in any one of the above, and the high-altitude escape backpack also includes:
  • the strap is connected with the backpack and is used for binding on the user;
  • the embedded part is set on the building body and is used to connect the free end of the rope or the descending device.
  • the rope is positioned to limit the position of the rope, ensuring the balance of the descending device, thereby improving safety.
  • the distance between the position where the rope is pulled out from the descending device and the user is controlled to reduce the user's inclination angle when descending, thereby ensuring the balance of the user when descending with the descending device ;
  • the main shaft is associated with the guide rod through the one-way clutch assembly to drive the guide rod to rotate in one direction.
  • the rotating power of the hub and the main shaft will not be transmitted to the guide rod. , thereby avoiding frictional contact between the rotation of the centrifugal block and the inner wall of the hub, ensuring the rotation speed of the hub when the rope is recovered, so that the rope can be recovered quickly, so that the descending device can be used repeatedly by multiple people, reducing the use cost and improving the promotion ability.
  • Fig. 1 is a perspective view of Embodiment 1 of the present invention.
  • FIG. 2 is a perspective view from another angle of view of FIG. 1 .
  • FIG. 3 is a partial cross-sectional structural diagram of FIG. 1 .
  • Fig. 4 is a cross-sectional view of the centrifugal deceleration mechanism in Fig. 3 .
  • FIG. 5 is an enlarged view at point A in FIG. 4 .
  • Fig. 6 is a partial structural schematic diagram of the cooperation between the centrifugal block and the hub in Fig. 4 .
  • FIG. 7 is a schematic structural diagram of another embodiment of the first and second damping parts in FIG. 1 .
  • Fig. 8 is a projection view of the hub and the bushing in Fig. 1 on the same reference plane.
  • FIG. 9 is a schematic structural diagram of the transmission mechanism in FIG. 1 .
  • FIG. 10 is a cross-sectional view of the mount in FIG. 1 .
  • Fig. 12 is a perspective view of the brake device installed on the slow descender in Fig. 1 .
  • Fig. 13 is a perspective view of the installation and driving mechanism of the slow descender in Fig. 1 .
  • FIG. 14 is an exploded view of FIG. 12 .
  • Fig. 15 is a schematic diagram of the moment arm of the braking device and the storage battery.
  • Fig. 16 is a schematic diagram of the moment arm of the braking device and the battery when the descender is in a tilted state.
  • a high-altitude escape backpack includes a descending device 10, a strap for binding on the user and a backpack connected with the strap;
  • the descending device 10 includes a fixed frame 11 and a hub 12 and a centrifugal deceleration mechanism 20;
  • the fixed frame 11 is connected and fixed, and is connected with a backpack or a strap;
  • the hub 12 is rotatably mounted on the fixed frame 11, and the hub 12 is set as a cylindrical structure for winding ropes;
  • the centrifugal reduction mechanism 20 is associated with the hub 12 and used to limit the rotation speed of the hub 12 .
  • the knapsack and straps form a structure similar to a knapsack, and the descending device 10 is fixed in the knapsack, and the free end of the rope is pulled out from the knapsack, and the free end of the rope is connected with the rope grab installed on the building body; of course , in other embodiments, the braces can be directly connected with the descending device 10 to be used alone; in the specific operation of this embodiment, during the descending process of the user wearing the straps, the descending device 10 descends synchronously with the user.
  • the slow descender 10 can be used separately from the strap, and the slow descender 10 is fixed on the embedded part of the building, and the strap is connected to the free end of the rope. , during the descending process of the user wearing the harness, the free end of the rope descends synchronously with the user.
  • the centrifugal deceleration mechanism 20 includes a main shaft 21, a one-way clutch assembly 22, a guide rod 23, a centrifugal block 24 and an elastic member 25;
  • the hub 12 rotates around the main shaft 21, and drives the main shaft 21 to rotate through the transmission mechanism 30;
  • the centrifugal block 24 is provided with a plurality of Two centrifugal blocks 24 are arranged at intervals along the main shaft 21, and the centrifugal blocks 24 move towards the direction away from the main shaft 21 under the action of centrifugal force; one end of the guide rod 23 is pierced through the centrifugal block 24, so that the centrifugal block 24 can slide along the guide rod 23, and the guide rod
  • the other end of 23 is connected with the main shaft 21 through the one-way clutch assembly 22, thereby driving the centrifugal block 24 to rotate; the same centrifugal block 24 is connected with two guide rods 23, so that the centrifugal block 24 is connected with two guide rods 23, so that the centrifugal block 24
  • the one-way clutch assembly 22 drives the guide rod 23 to rotate, and then drives the main shaft 21 to rotate synchronously.
  • the centrifugal block 24 leans against the inner wall of the hub 12 under the action of centrifugal force. The greater the centrifugal force, the greater the pressure between the centrifugal block 24 and the hub 12, and the greater the friction between it and the hub 12, so that the centrifugal block 24 decelerates the hub 12, so that the hub 12 keeps rotating at a constant speed;
  • the main shaft is associated with the guide rod 23 through the one-way clutch group 22 to drive the guide rod 23 to rotate in one direction.
  • the one-way clutch assembly 22 may be a ratchet transmission mechanism, a one-way clutch or other one-way transmission mechanisms.
  • the number of centrifugal blocks 24 in this embodiment is set to two, and the two centrifugal blocks 24 are arranged symmetrically with respect to the main shaft 21, and the two centrifugal blocks 24 compensate each other to achieve a better balance, and the deceleration effect is good.
  • the inner wall of the hub 12 is provided with a first damping portion 121
  • the first damping portion 121 is a protruding ring formed on the inner wall of the hub 12 along the circumferential direction of the hub 12, the The cross-section of the first damping part 121 is set as an isosceles trapezoid;
  • the second damping part 241 matched with the first damping part 121 is provided on the said centrifugal block 24, and the second damping part 241 is formed along the circumferential direction of the inner wall of the hub 12
  • the cross-section of the second damping portion 241 is also set as an isosceles trapezoid, and the minimum width of the second damping portion 241 is smaller than the minimum width of the first damping portion 121;
  • the first damping portion The side wall of 121 is in frictional contact with the side wall of the second damping part 241 , which increases the contact area between the centr
  • the plane coincident with the axis of the hub is used as the first reference plane, and the first reference plane is used as the section of the centrifugal reduction mechanism.
  • both sides of the first damping part 121 The included angle formed by the waist is ⁇ , and the included angle formed by the side walls on both sides of the second damping portion 241 is ⁇ , wherein ⁇ 1.2 ⁇ ; preferably, ⁇ 1.1 ⁇ ; optimally, ⁇ ⁇ 1.05 ⁇ ; ensure that the first damping part 121 is in close contact with the second damping part 241 to improve the damping effect; and limit the maximum value of ⁇ to prevent the first damping part 121 and the second damping part 24 under the same centrifugal force.
  • ⁇ is set to 60°, correspondingly, 60° ⁇ 72°; preferably, 60° ⁇ 66°; optimally, 60° ⁇ 63°.
  • the plane coincident with the axis of the hub is used as the first reference plane, and the first reference plane is used as the section of the centrifugal reduction mechanism.
  • the waist of the first damping part 121 The distance between the edge and the side wall of the second damping part is d, wherein 0 ⁇ d ⁇ 3mm; preferably, 0 ⁇ d ⁇ 2mm; optimally, 0 ⁇ d ⁇ 1mm; so that the wheel hub 12 is in a static state or the rope is retracted In this state, there is a distance between the centrifugal block 24 and the inner wall of the wheel hub, so as to prevent the wheel hub from receiving the damping effect of the centrifugal block in the state of receiving the rope and affecting the speed of receiving the rope; A damping part quickly cooperates to ensure the corresponding speed.
  • the second damping portion 241 is provided with an inner groove 242 toward one end of the main shaft 21 , the cross section of the inner groove 242 is set in a “U” shape, and communicates with the second damping portion 241
  • the inner groove 242 is set, when the first damping portion 121 is in close contact with the second damping portion 241, part of the air in the second damping portion 241 is pressed into the inner groove 242, preventing the air in the second damping portion 241 from being completely
  • the negative pressure is formed by extrusion to suck the first damping part 121 and the second damping part 241 tightly, so as to ensure that the centrifugal block 24 can return to the original position under the action of the elastic member 25 after stopping the rotation.
  • the first damping portion 121a is an annular groove formed on the inner wall of the hub 12a along the circumferential direction of the hub 12a
  • the second damping portion 241a is formed on the centrifugal wall along the circumferential direction of the inner wall of the hub 12a.
  • the arc block on the outer periphery of the block 24a, the side wall of the first damping part 121a is in frictional contact with the side wall of the second damping part 241a, which increases the contact area between the centrifugal block 24a and the inner wall of the hub 12a.
  • the one-way clutch assembly 22 is provided with two groups, and the two guide rods 23 connected to the same centrifugal block 24 correspond to the two sets of one-way clutch assemblies 22;
  • the clutch assembly includes a one-way bearing 221 and a collar 222.
  • the one-way bearing 221 is commercially available, and its structure will not be described in detail.
  • the one-way bearing 221 is set on the main shaft 21, and the inner ring of the one-way bearing 221 It is connected with the main shaft 21 through a key to prevent rotation;
  • the main shaft 21 is provided with a first enlarged diameter part 211, and the one-way bearings 221 of the two sets of one-way clutch assemblies 22 are symmetrically arranged on both sides of the first enlarged diameter part 211, thereby
  • the one-way bearing 221 can be quickly positioned on the main shaft 21, and the assembly efficiency is high;
  • the collar 222 is sleeved on the one-way bearing 221, and is connected with the outer ring of the one-way bearing 221 by a key to prevent rotation.
  • a one-way bearing 221 is set so that the main shaft 21 can only drive the collar 222 to rotate in one direction.
  • the collar 222 rotates, and then the guide rod 23 drives the centrifugal block 24 to rotate, and the centrifugal block 24 presses against the inner wall of the wheel hub 12 to decelerate the wheel hub 12 under the action of centrifugal force; characteristics, the state of the collar 222 will not be affected by the main shaft 21, to ensure that the hub 12 will not be decelerated by the centrifugal block 24 when the rope is recovered, and to improve the efficiency of rope recovery.
  • two collars 222 are respectively provided with baffles 223 at the ends away from the first enlarged diameter portion 211 , and screws 224 are used to sequentially install one of the baffles 223 , the two collars 222 and the other.
  • the baffle plate 223 is fixed by a nut behind the baffle plate 223.
  • the inner diameter of the one-way bearing 221 is smaller than the outer diameter of the one-way bearing 221, so that the baffle 223 at least partially abuts against one end of the one-way bearing 221, so that the baffle 223 cooperates with the first enlarged diameter portion 211 to limit the one-way bearing 221.
  • the hub 12 is provided with two support rings 13, and the support rings 13 are respectively installed on the main shaft 21 through bearings, so as to adapt to the working condition that there is a difference in speed between the main shaft 21 and the hub 12, And the two supporting rings 13 and the hub 12 enclose a cavity, and the centrifugal reduction mechanism 20 is installed in the cavity.
  • the transmission mechanism 30 includes a ring gear 31, a planetary gear 32 and a sun gear 33; Integral structure; the planetary gear 32 is provided with a plurality, and the plurality of planetary gears 32 are arranged at intervals along the circumferential direction of the ring gear 31, and mesh with the ring gear 31 respectively, and the planetary gear 32 is installed on the fixed frame 11 through a connecting shaft above; the central gear 33 is sleeved on the main shaft 21, and is connected with the main shaft 21 through a key to prevent rotation, and the central gear 33 and a plurality of planetary gears 32 are meshed at the same time; the hub 12 rotates, and the power transmission through the transmission mechanism Drive the main shaft 21 to rotate, the rotation direction of the main shaft 21 is opposite to the rotation direction of the wheel hub 12, the main shaft 21 drives the centrifugal block 24 to rotate, and then the rotation direction of the centrifugal block 24 is opposite to the rotation direction of the wheel hub
  • the fixed frame 11 includes two support plates 111 symmetrically arranged on both sides of the hub 12 and a plurality of connecting columns connecting the two support plates 111 respectively, so that the fixed frame 11 is arranged into two parts structure to facilitate the disassembly and assembly of the hub 12; specifically, the connecting columns include a first connecting column 1121 and a second connecting column 1122, and the support plate 111 is symmetrically provided with two first connecting columns near the direction of the rope exit of the hub 12 1121, the first connecting column 1121 not only plays the role of connecting, but also restricts the rope, so as to facilitate the winding of the rope; the support plate 111 is provided with a second connecting column 1122 in the direction away from the hub 12, and the second connecting The diameter of the column 1122 is larger than that of the first connecting column 1121, and the second connecting column 1122 can be hung on the embedded parts of the building body, so as to fix the descender 10, and the user connects the free end of the rope to descend.
  • the connecting columns include a first connecting column 1121 and
  • the fixed frame 11 is also provided with a guiding mechanism for guiding the rope, the guiding mechanism includes a first roller set 41 and a second roller set 42, the first The set of rollers 41 and the second set of rollers 42 are vertically arranged to locate the ropes; the first set of rollers 41 is composed of two first guide rollers 411 arranged in parallel, and a supply rail is provided between the two first guide rollers 411.
  • the gap through which the rope passes; the second roller set 42 is composed of two second guide rollers 421 arranged in parallel, and a shaft sleeve 422 is rotatably sleeved on the second guide roller 421 for the rope to be wound, and the shaft sleeve Between 422 and another second guide roller 421, there is a gap for the rope to pass through.
  • the outer diameter of the shaft sleeve 422 is greater than that of all the guide rollers, which increases the bending radius of the rope and reduces the damage of the rope.
  • the rope is especially obvious, and the bending force of the rope is also reduced, and the rope is retracted and released more smoothly.
  • the plane coincident with the axis of the hub is used as the first reference plane, and the first reference plane is used as the section of the centrifugal reduction mechanism.
  • the first guide on the side away from the user is L1
  • the distance between the axis of the first guide roller away from the user side and the support plate near the user side is L2, wherein L1:L2 is 1: 1.5-1.8; preferably, L1:L2 is 1:1.6-1.7; optimally, L1:L2 is 1:1.72; by limiting the relationship between L1 and L2, the distance between the position where the rope is pulled out from the descent device and the user is controlled. The distance between them reduces the user's inclination angle when descending, thereby ensuring the balance when the user carries the descending device 10 when descending.
  • the diameter of the side plate 15 is set as D1
  • the diameter of the sleeve is set as D2
  • the plane perpendicular to the axis of the hub is used as the second reference plane
  • the axis of the sleeve is at the second reference plane
  • the projection point above is the first reference point C1
  • the projection point of the hub axis on the second reference plane is the second reference point C2, where the length of the line connecting C1 and C2 is L3, (0.54-0.6)*(D1+ D2)>L3>0.5(D1+D2); preferred, (0.56-0.58)*(D1+D2)>L3>0.5(D1+D2); optimal, 0.57*(D1+D2)>L3> 0.5(D1+D2); while ensuring the bending radius of the rope, the distance between the guide mechanism and the hub 12 is reduced to make the structure compact, thereby reducing the overall space occupied by the descender 10.
  • both ends of the second guide roller 421 are rotatably connected to the support plates 111 respectively, and the first guide roller 411 group is installed between the two support plates 111 through the mounting seat 412 .
  • the mounting seat 412 is composed of two subsections 4121 of the same shape connected end to end, and is fixed by fastening screws.
  • the first guide roller 411 is installed between the two subsections 4121, so that the second guide roller 421 and the first guide roller 411 is vertical to limit the position of the rope, and the first and second guide rollers are easy to install in this installation method.
  • side plates 15 are installed on both sides of the hub 12, and the side plates 15 and the outer wall of the hub 12 form a wire groove, and the ropes are wound in the wire grooves to facilitate rope retraction. winding, and limit the rope wound on the hub 12; the hub 12 is also provided with a fixing groove 121 for fixing the end of the rope, so as to facilitate the fixed connection of the rope.
  • the rope is made of steel wire, nylon, plastic or carbon fiber material, and the rope is wrapped with a fireproof layer or made of added fireproof material.
  • the present embodiment is steel wire.
  • the rope has been treated with fire prevention and can withstand high temperatures above 1000 degrees to improve safety.
  • a backpack board 16 is installed on one side of the support board 111 , and the backpack board 16 is provided with a plurality of connection holes 161 that can be connected with a backpack or a strap, and the connection method is simple.
  • a brake device 51 is installed on the side support plate 111 away from the backpack board 16, and the brake device 51 is purchased, and its structure will not be described in detail.
  • the brake device 51 and the side plate 15 Cooperate with the brake hub 12, so that after the user descends to a non-dangerous floor height, the brake device 51 can restrict the rotation of the hub 12, and then quickly escape.
  • a storage battery 52 electrically connected to the braking device 51 is installed on the side support board 111 away from the backpack board 16 for powering the braking device 51 .
  • a drive mechanism 60 associated with the main shaft 21 to drive the rotation of the main shaft 21 is installed on the side support plate 111 away from the backpack board 16, and then through the main shaft 21 through the transmission mechanism 30 Drive the wheel hub 12 to rotate to recover the rope, so that the slow descender 10 returns to the initial state, which is convenient for reuse;
  • the driving mechanism 60 includes a first bevel gear 61, a second bevel gear 62, a transmission case 63, a motor 64 and a motor seat 65
  • the first bevel gear 61 is sheathed on the main shaft 21, and is connected with the main shaft 21 through a key to prevent rotation;
  • the second bevel gear 62 meshes with the first bevel gear 61 and is connected to the output shaft of the motor 64;
  • the outer diameter of the first bevel gear 61 is larger than the outer diameter of the second bevel gear 62, so that the main shaft 21 obtains a higher rotational speed and ensures the efficiency of the hub 12 to recover the rope;
  • the transmission case 63 is installed on the
  • the mass of the battery 52 is set to m1
  • the mass of the braking device 51 is set to m2
  • the plane perpendicular to the axis of the hub 12 is used as the second reference plane, so as to intersect and be perpendicular to the axis of the hub 12
  • the straight line is the first reference line R1
  • the projection point of the center of the smallest spherical surface that can completely cover the storage battery 52 on the second reference plane is E1
  • the vertical distance from E1 to the first reference line R1 is L4, so that it can completely cover the storage battery 52.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Lowering Means (AREA)

Abstract

L'invention concerne un sac à dos d'évacuation pour haute altitude et son dispositif de commande de descente doté d'une corde rétractable. Le dispositif de commande de descente comprend un support de fixation (11), un moyeu (12) monté rotatif sur le support de fixation (11) pour l'enroulement de la corde, et une rainure de fixation (121) formée sur le moyeu (12) pour fixer une extrémité de la corde, le support de fixation (11) étant en outre pourvu d'un mécanisme de guidage pour guider la corde ; le mécanisme de guidage comprenant un premier ensemble de rouleaux (41) et un second ensemble de rouleaux (42), le premier ensemble de rouleaux (41) étant disposé perpendiculairement au second ensemble de rouleaux (42) ; le premier ensemble de rouleaux (41) étant composé de deux premiers rouleaux de guidage (411) agencés en parallèle ; et le second ensemble de rouleaux (42) étant composé de deux seconds rouleaux de guidage (421) agencés en parallèle, et le second rouleau de guidage (421) pour l'enroulement de la corde étant emmanché en rotation avec un manchon d'arbre (422). Dans le dispositif de commande de descente, le premier ensemble de rouleaux (41) et le second ensemble de rouleaux (42) sont prévus pour positionner la corde pour limiter la position de décrochage de la corde, ce qui assure l'équilibre du dispositif de commande de descente, ce qui permet d'améliorer la sécurité.
PCT/CN2021/136716 2021-08-23 2021-12-09 Sac à dos d'évacuation pour haute altitude et son dispositif de commande de descente doté d'une corde rétractable WO2023024326A1 (fr)

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CN202110966956.7 2021-08-23
CN202110966956.7A CN113559429A (zh) 2021-08-23 2021-08-23 一种高空逃生背包及其绳索可回收式缓降器

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WO2023024326A1 true WO2023024326A1 (fr) 2023-03-02

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Publication number Priority date Publication date Assignee Title
CN113559429A (zh) * 2021-08-23 2021-10-29 金华捷科工具有限公司 一种高空逃生背包及其绳索可回收式缓降器
CN114606904B (zh) * 2022-05-12 2022-07-29 西南交通大学 一种智能预警防船撞分级缓冲系统及耗能装置设计方法

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