CN113559429A

CN113559429A - High-altitude escape backpack and rope-recoverable descent control device thereof

Info

Publication number: CN113559429A
Application number: CN202110966956.7A
Authority: CN
Inventors: 冯铭
Original assignee: Jinhua Jech Tools Co ltd
Current assignee: Jinhua Jech Tools Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-10-29
Also published as: WO2023024326A1

Abstract

The invention discloses a high-altitude escape backpack and a rope-recoverable descent control device thereof, which comprise a fixed frame; the hub is rotatably arranged on the fixed frame and is used for winding a rope; the fixing groove is arranged on the hub and used for fixing the end part of the rope; the fixed frame is also provided with a guide mechanism for guiding the rope, the guide mechanism comprises 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 group consists of two first guide rollers which are arranged in parallel; the second roller group consists of two second guide rollers which are arranged in parallel, and a shaft sleeve is rotatably sleeved on the second guide roller for the rope to be folded and wound. According to the invention, the first roller set and the second roller set are arranged to position the rope to limit the rope outlet position, so that the balance of the descent control device is ensured, and the safety is improved.

Description

High-altitude escape backpack and rope-recoverable descent control device thereof

Technical Field

The invention belongs to the technical field of escape equipment, and particularly relates to a high-altitude escape backpack and a rope-recyclable descent control device thereof.

Background

At present, the urban construction is faster and faster, the shortage of urban land causes more and more high-rise buildings, when disastrous situations such as fire disasters occur on high floors, the mode of people for withdrawing from the accident site is very limited, the danger coefficient is very high, and under the background, the high-rise slow-falling escape equipment is born.

The existing slow-descent escape equipment does not limit the outlet position of a rope, so that the balance of the slow-descent escape equipment is poor, and the use safety is low; and the existing slow-descending escape equipment cannot be timely recovered after working and can only be used by a single person. In high-rise buildings, people cannot be configured independently, so the defect of the escape device limits the popularization and application of the escape device and increases the use cost.

Disclosure of Invention

The invention provides a descent control device with a recoverable rope and an overhead escape backpack adopting the descent control device, aiming at overcoming the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a rope-recoverable descent control device comprises

A fixed mount;

the hub is rotatably arranged on the fixed frame and is used for winding a rope;

the fixing groove is arranged on the hub and used for fixing the end part of the rope;

the fixed frame is also provided with a guide mechanism for guiding the rope, the guide mechanism comprises 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 group consists of two first guide rollers which are arranged in parallel; the second roller group consists of two second guide rollers which are arranged in parallel, and a shaft sleeve is rotatably sleeved on the second guide roller for the rope to be folded and wound; a plane coincident with the axis of the hub is taken as a first reference plane, the first reference plane is taken as a section of the centrifugal speed reducing mechanism, and on the section, the distance between the axis of the first guide roller at the side far away from the user and the inner wall of the fixing frame at the side far away from the user is L1, the distance between the axis of the first guide roller at the side far away from the user and the inner wall of the fixing frame at the side close to the user is L2, wherein L1: L2 are 1: 1.5-1.8.

Optionally, a first damping portion is arranged on the inner wall of the hub, a second damping portion matched with the first damping portion is arranged on the centrifugal block, a plane coincident with the axis of the hub is used as a first reference plane, the first reference plane is used as a cross section of the centrifugal speed reduction mechanism, on the cross section, an included angle formed by waist edges on two sides of the first damping portion is alpha, an included angle formed by side walls on two sides of the second damping portion is beta, and beta is not less than alpha and not more than 1.2 beta.

Optionally, side plates are arranged on two sides of the hub; the fixed frame is provided with a brake device which is matched with the side plate to brake the hub; and the fixed frame is provided with a storage battery for supplying power to the brake device.

Optionally, the centrifugal speed reducing mechanism is associated with the hub to limit the rotation speed of the hub, the centrifugal speed reducing mechanism includes a main shaft passing through the hub and rotatably disposed on the fixing frame, a plurality of guide rods disposed along the circumferential direction of the main shaft, and a centrifugal block slidably sleeved on the guide rods, and the hub drives the main shaft to rotate through a transmission mechanism; when the spindle drives the guide rod to rotate, the centrifugal block is in friction fit with the inner wall of the hub under the action of centrifugal force; the driving device comprises a transmission case arranged on the fixing frame, a first bevel gear arranged in the transmission case and in rotation stop fit with the spindle, a second bevel gear arranged in the transmission case and meshed with the first bevel gear, and a motor used for driving the second bevel gear to rotate, wherein the motor is arranged on the fixing frame through a motor base.

Optionally, 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 comprises a one-way bearing sleeved on the main shaft and a lantern ring sleeved on the one-way bearing, wherein the inner ring of the one-way bearing is in rotation stopping fit with the main shaft, the outer ring of the one-way bearing is in rotation stopping fit with the lantern ring, and the guide rod is connected with the lantern ring towards one end of the main shaft.

Optionally, two sets of one-way clutch assemblies are arranged, two guide rods are matched with the same centrifugal block, and the two guide rods correspond to the two sets of one-way clutch assemblies one by one; and/or the main shaft is provided with a first diameter expanding part, and the one-way bearings of the two sets of one-way clutch assemblies are symmetrically arranged on two sides of the first diameter expanding part.

Optionally, one end of the lantern ring, which is far away from the first diameter-expanding part, is provided with a baffle, and the baffle, the two lantern rings and the other baffle are fixed by bolts after the bolts/bolts sequentially penetrate through one baffle, the two lantern rings and the other baffle; and/or the guide rod is sleeved with an elastic piece, one end of the elastic piece is connected with the periphery of the lantern ring, and the other end of the elastic piece is connected with the centrifugal block.

Optionally, side plates are arranged on two sides of the hub; the diameter of the side plate is D1, the diameter of the shaft sleeve is D2, a plane perpendicular to the axis of the hub is taken as a second reference plane, the projection point of the shaft sleeve axis on the second reference plane is taken as a first reference point C1, the projection point of the shaft sleeve axis on the second reference plane is taken as a second reference point C2, and the length of a connecting line between C1 and C2 is L3, wherein (0.54-0.6) (D1+ D2) > L3>0.5(D1+ D2).

Optionally, the mass of the battery is m1, the mass of the brake device is m2, a plane perpendicular to the hub axis is used as a second reference plane, a straight line which intersects with the hub axis and is vertical is used as a first reference line R1, a projection point of a center of a minimum spherical surface which can completely cover the battery on the second reference plane is used as E1, a vertical distance from E1 to the first reference line R1 is L4, a projection point of the center of the minimum spherical surface which can completely cover the brake device on the second reference plane is used as E2, a vertical distance from E2 to a first reference line R1 is L5, and m1 is L4 (0.8-1.2) m2 is L5; and/or when the entire descent control device is in an inclined state, taking a plane which passes through the axis of the main shaft and is vertically arranged as a third reference surface, taking a projection point of the center of the minimum spherical surface capable of completely coating the storage battery on the third reference surface as E3, taking a projection point of the center of the minimum spherical surface capable of completely coating the braking device on the third reference surface as E4, taking an intersection point of a projection of the hub axis on the third reference surface and an E3E4 connecting line as E5, taking a horizontal straight line which passes through E5 as a second reference line R2, taking a vertical distance from E3 to a second reference line R2 as L6, and taking a vertical distance from E4 to the second reference line R2 as L7, wherein m 1L 6 is (0.8-1.2) m 2L 6.

Optionally, the transmission mechanism includes a gear ring disposed on the inner wall of the hub, a plurality of planetary gears respectively engaged with the gear ring, and a sun gear sleeved on the main shaft and engaged with the main shaft in a rotation-stopping manner, and the sun gear is engaged with the plurality of planetary gears simultaneously.

The invention also discloses a high-altitude escape backpack, which comprises the rope-recoverable descent control device, and further comprises:

the descent control device is arranged in the backpack;

the shoulder strap is connected with the backpack and used for being bound on the body of a user;

and the embedded part is arranged on the building body and is used for connecting the free end of the rope or the descent control device.

In conclusion, the beneficial effects of the invention are as follows:

1. through setting up first roller set and second roller set, fix a position the rope in order to restrict out the rope position, guarantee the equilibrium of ware slowly falls to improve the security.

2. By arranging the shaft sleeve, the bending radius of the rope is increased, the damage of the rope is reduced, the steel rope is particularly obvious, the bending stress of the rope is reduced, and the rope is more smoothly wound and unwound;

3. by limiting the relation between L1 and L2, the distance between the pull-out position of the rope from the descent control device and a user is controlled, the inclination angle of the user during descending is reduced, and the balance of the user during descending with the descent control device is further ensured;

4. the centrifugal block is matched with the hub, when the centrifugal block rotates along with the main shaft through the guide rod, the centrifugal block is in friction fit with the inner wall of the hub under the action of centrifugal force, so that the rotating speed of the hub during operation is adjusted, the reliability is high, the slow descending effect is good, and the safety performance is improved;

5. the main shaft is related to the guide rod through the one-way clutch subassembly and is in order to drive the one-way rotation of guide rod, when needs retrieve the rope, because of the characteristic of one-way clutch subassembly, wheel hub and main shaft pivoted power can not transmit to the guide rod, and then avoid centrifugal block to rotate and take place frictional contact with the wheel hub inner wall, wheel hub's rotational speed when guaranteeing the rope recovery for the rope can be retrieved fast, thereby the ware that slowly falls can supply repeated confession many people to use, reduces use cost, improves the popularization ability.

Drawings

Fig. 1 is a perspective view of a first embodiment of the present invention.

Fig. 2 is a perspective view of fig. 1 from another perspective.

Fig. 3 is a partial sectional structural view of fig. 1.

Fig. 4 is a sectional view of the centrifugal deceleration mechanism in fig. 3.

Fig. 5 is an enlarged view of a portion a in fig. 4.

FIG. 6 is a schematic view of a portion of the centrifugal block and the hub in FIG. 4.

Fig. 7 is a schematic structural view of another embodiment of the first and second damping portions in fig. 1.

Fig. 8 is a projection view of the hub and sleeve of 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 of fig. 1.

Fig. 11 is a perspective view of the hub of fig. 1.

Fig. 12 is a perspective view of the descent control device of fig. 1 with a brake mounted thereon.

Fig. 13 is a perspective view of the descent control device installation drive mechanism of fig. 1.

Fig. 14 is an exploded view of fig. 12.

FIG. 15 is a schematic view of the brake and the arm of the battery.

Fig. 16 is a schematic diagram of the force arm of the brake device and the storage battery when the descent control device is in an inclined state.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-3, a high-altitude escape backpack comprises a descent control device 10, straps for being tied on a user, and a backpack connected with the straps; the descent control device 10 comprises a fixed frame 11, a hub 12 and a centrifugal speed reducing mechanism 20; the fixing frame 11 is fixedly connected and connected with a backpack or a strap; the hub 12 is rotatably mounted on the fixed frame 11, and the hub 12 is of a cylindrical structure and is used for winding a rope; the centrifugal deceleration mechanism 20 is associated with the hub 12 for limiting the rotational speed of the hub 12.

In the embodiment, the backpack and the braces form a structure similar to a backpack, the descent control device 10 is fixed in the backpack, the free end of the rope is pulled out of the backpack, and the free end of the rope is connected with a rope grabbing device arranged on a building body; of course, in other embodiments, the harness may be directly connected to the descent control device 10 for separate use; in the specific operation of this embodiment, the descent control device 10 descends synchronously with the user while the user wearing the harness descends.

Of course, in other embodiments, the descent control device 10 may be used separately from the shoulder straps, the descent control device 10 is fixed to the embedded part of the building body, and the shoulder straps are connected to the free ends of the ropes.

Referring to fig. 3-5, in some embodiments, 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 two ends of the main shaft 21 are respectively rotatably arranged on the fixed frame 11, the axis of the main shaft 21 is superposed with the central line of the hub 12, and the hub 12 rotates around the main shaft 21 and drives the main shaft 21 to rotate through the transmission mechanism 30; a plurality of centrifugal blocks 24 are arranged, the centrifugal blocks 24 are arranged at intervals along the main shaft 21, and the centrifugal blocks 24 move towards the direction far away from the main shaft 21 under the action of centrifugal force; one end of the guide rod 23 penetrates through the centrifugal block 24, so that the centrifugal block 24 can slide along the guide rod 23, and the other end of the guide rod 23 is connected with the main shaft 21 through the one-way clutch assembly 22, so that the centrifugal block 24 is driven to rotate; the same centrifugal block 24 is connected with two guide rods 23, so that the centrifugal block 24 cannot be locked in the sliding process, and the operation is more stable; the elastic piece 25 is a spring, is sleeved on the guide rod 23, is positioned between the centrifugal block 24 and the one-way clutch assembly 22, is provided with the elastic piece 25, supports the centrifugal block 24, enables the elastic piece to support the centrifugal block in a static state, enables the distance between the plurality of centrifugal blocks 24 and the main shaft 21 to be kept consistent in an initial state, ensures the synchronism of the change of the position states of the plurality of centrifugal blocks 24, and enables the elastic piece 25 and the centrifugal block 24 to jointly act with the centrifugal force to adjust the friction force between the centrifugal block 24 and the hub 12; when the centrifugal block rotates along with the main shaft, the centrifugal force borne by the centrifugal block can overcome the restoring force of the elastic piece to be in contact with the inner wall of the hub, so that the rotating speed of the hub 12 during operation is adjusted; and when the centrifugal block stops rotating, the centrifugal block returns to the initial position under the action of the restoring force of the spring.

When the main shaft 21 rotates, the guide rod 23 is driven to rotate through the one-way clutch assembly 22, so that the main shaft 21 is driven to synchronously rotate, the centrifugal block 24 abuts against the inner wall of the hub 12 under the action of centrifugal force, the higher the rotating speed of the main shaft 21 is, the larger the centrifugal force borne by the centrifugal block 24 is, the higher the pressure between the centrifugal block 24 and the hub 12 is, and the higher the friction force between the centrifugal block 24 and the hub 12 is, so that the centrifugal block 24 decelerates the hub 12, and the hub 12 keeps rotating at a constant speed; and the main shaft is associated with the guide rod 23 through the one-way clutch assembly 22 to drive the guide rod 23 to rotate in a one-way mode, when the rope needs to be recovered, due to the characteristics of the one-way clutch assembly 22, the rotating power of the hub 12 and the main shaft 21 cannot be transmitted to the guide rod 23, so that the centrifugal block 24 is prevented from rotating to be in frictional contact with the inner wall of the hub 12, the rotating speed of the hub 12 during rope recovery is ensured, the rope can be recovered quickly, the descent control device 10 can be repeatedly used by multiple people, the use cost is reduced, and the popularization capability is improved.

Of course, in other embodiments, the one-way clutch assembly 22 may be a ratchet mechanism, a one-way clutch or other one-way transmission mechanism.

Preferably, in the present embodiment, the number of the centrifugal blocks 24 is two, two centrifugal blocks 24 are symmetrically arranged relative to the main shaft 21, and the two centrifugal blocks 24 compensate each other to achieve better balance and have good deceleration effect.

Referring to fig. 4 and 5, in some embodiments, a first damping portion 121 is disposed on an inner wall of the hub 12, the first damping portion 121 is a convex ring formed on the inner wall of the hub 12 along a circumferential direction of the hub 12, and a cross section of the first damping portion 121 is an isosceles trapezoid; the centrifugal block 24 is provided with a second damping part 241 matched with the first damping part 121, the second damping part 241 is an arc groove formed on the outer periphery of the centrifugal block 24 along the circumferential direction of the inner wall of the hub 12, the cross section of the second damping part 241 is also designed as an isosceles trapezoid, and the minimum width of the second damping part 241 is smaller than that of the first damping part 121; the side wall of the first damping part 121 is in friction contact with the side wall of the second damping part 241, so that the contact area between the centrifugal block 24 and the inner wall of the hub 12 is increased, and the deceleration effect of the centrifugal block 24 on the hub 12 is improved.

In some embodiments, as shown in fig. 5, a plane coinciding with the axis of the hub is used as a first reference plane, and the first reference plane is used as a cross section of the centrifugal deceleration mechanism, in the cross section, an included angle formed by the waist edges at two sides of the first damping portion 121 is α, and an included angle formed by the side walls at two sides of the second damping portion 241 is β, where β ≦ α ≦ 1.2 β; preferably, β ≦ α ≦ 1.1 β; optimally, beta is not less than alpha and not more than 1.05 beta; the first damping part 121 is ensured to be in close contact with the second damping part 241, so that the damping effect is improved; and the maximum value of alpha is limited, so that the excessive clamping of the first damping part 121 and the second damping part 241 under the action of the same centrifugal force on the centrifugal block 24 is prevented from causing the overlarge friction force between the two parts, the clamping phenomenon in the running process of the hub 12 is avoided, and the hub 12 is ensured to finally run at a constant speed after being decelerated by the centrifugal block 24. In this embodiment, β is set to 60 °, and correspondingly, α is 60 ° or more and 72 ° or less; preferably, alpha is more than or equal to 60 degrees and less than or equal to 66 degrees; optimally, alpha is more than or equal to 60 degrees and less than or equal to 63 degrees.

As shown in fig. 6, in some embodiments, a plane coincident with the hub axis is taken as a first reference plane, and the first reference plane is taken as a cross section of the centrifugal deceleration mechanism, in which the distance between the waist edge of the first damping portion 121 and the side wall of the second damping portion is d, wherein d is greater than or equal to 0 and less than 3 mm; preferably, d is more than or equal to 0 and less than 2 mm; optimally, d is more than or equal to 0 and less than 1 mm; when the hub 12 is in a static state or a rope winding state, the centrifugal block 24 is spaced from the inner wall of the hub, so that the phenomenon that the damping action of the centrifugal block on the hub in the rope winding state influences the rope winding speed is avoided; in addition, the centrifugal block can be quickly matched with the second damping part under the action of centrifugal force at the distance, so that the corresponding speed is ensured.

Referring to fig. 4 and 5, in some embodiments, the second damper portion 241 has an inner groove 242 at an end facing the main shaft 21, the inner groove 242 is formed in a U-shape in cross section and communicates with the second damper portion 241; an inner groove 242 is provided, when the first damping part 121 is in close contact with the second damping part 241, part of air in the second damping part 241 is pressed into the inner groove 242, so that the air in the second damping part 241 is prevented from being completely extruded out to form negative pressure to suck the first damping part 121 and the second damping part 241 tightly, and the centrifugal block 24 is ensured to be capable of recovering to the initial position under the action of the elastic element 25 after stopping rotating.

Of course, referring to fig. 7, in other embodiments, 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 an arc block formed on the outer periphery of the centrifugal block 24a along the circumferential direction of the inner wall of the hub 12a, and the side wall of the first damping portion 121a and the side wall of the second damping portion 241a are in friction contact, so as to increase the contact area between the centrifugal block 24a and the inner wall of the hub 12 a.

Referring to fig. 3 and 4, in some embodiments, the one-way clutch assemblies 22 are provided in two sets, and two guide rods 23 connected to the same centrifugal block 24 correspond to two sets of one-way clutch assemblies 22 one by one; the clutch component comprises a one-way bearing 221 and a lantern ring 222, wherein the one-way bearing 221 is purchased from the market, the structure of the one-way bearing is not described in detail, the one-way bearing 221 is sleeved on the main shaft 21, and an inner ring of the one-way bearing 221 is in key connection with the main shaft 21 to be in rotation stopping fit; the main shaft 21 is provided with a first diameter expanding part 211, and the one-way bearings 221 of the two sets of one-way clutch assemblies 22 are symmetrically arranged on two sides of the first diameter expanding part 211, so that the one-way bearings 221 can be quickly positioned on the main shaft 21, and the assembly efficiency is high; the lantern ring 222 is sleeved on the one-way bearing 221 and is in key connection with the outer ring of the one-way bearing 221 to be in rotation stopping fit, and one end, facing the lantern ring 222, of the guide rod 23 is in threaded connection with the lantern ring 222; the one-way bearing 221 is arranged, so that the main shaft 21 can only drive the lantern ring 222 to rotate in a one-way mode, when the rope is pulled out, the main shaft 21 rotates in a forward direction, the lantern ring 222 is driven to rotate through the one-way bearing 221, the guide rod 23 drives the centrifugal block 24 to rotate, and the centrifugal block 24 abuts against the inner wall of the hub 12 under the action of centrifugal force to decelerate the hub 12; when the rope is recovered, the main shaft 21 rotates reversely, and due to the characteristic of the one-way bearing 221, the state of the lantern ring 222 is not influenced by the main shaft 21, so that the hub 12 is not subjected to the deceleration action of the centrifugal block 24 when the rope is recovered, and the rope recovery efficiency is improved.

Referring to fig. 4, in some embodiments, the two collars 222 are respectively provided with a baffle 223 at an end away from the first expanded diameter portion 211, and are fixed by a nut after one baffle 223, the two collars 222 and the other baffle 223 are fixed in sequence by using a screw 224, so that the two collars 222 move synchronously while the two baffles 223 are fixed, and the stability of the centrifugal block 24 is improved; the baffle 223 is annular, and the inner diameter of the baffle 223 is smaller than the outer diameter of the one-way bearing 221, so that the baffle 223 is at least partially abutted against one end of the one-way bearing 221, and the baffle 223 is matched with the first diameter-enlarged part 211 to limit the one-way bearing 221.

Referring to fig. 3, in some embodiments, two support rings 13 are disposed on the hub 12, the support rings 13 are respectively mounted on the main shaft 21 through bearings to accommodate the operating condition that the main shaft 21 and the hub 12 have a difference in rotation speed, and the two support rings 13 and the hub 12 enclose a cavity in which the centrifugal speed reduction mechanism 20 is mounted.

Referring to fig. 3, 4 and 9, in some embodiments, the transmission 30 includes a ring gear 31, planet gears 32 and a sun gear 33; the gear ring 31 is arranged on the inner wall of the hub 12 and is integrated with the hub 12; a plurality of planetary gears 32 are arranged, the plurality of planetary gears 32 are arranged at intervals along the circumferential direction of the gear ring 31 and are respectively meshed with the gear ring 31, and the planetary gears 32 are arranged on the fixed frame 11 through a connecting shaft; the central gear 33 is sleeved on the main shaft 21 and is in spline connection with the main shaft 21 to be in rotation stopping fit, and the central gear 33 is meshed with the plurality of planet gears 32 simultaneously; the hub 12 rotates, the main shaft 21 is driven to rotate through the power transmission of the transmission mechanism, the rotation direction of the main shaft 21 is opposite to the rotation direction of the hub 12, the main shaft 21 drives the centrifugal block 24 to rotate, and further the rotation direction of the centrifugal block 24 is opposite to the rotation direction of the hub 12, so that the centrifugal block 24 has a speed reducing effect on the hub 12.

Referring to fig. 1, in some embodiments, the fixing frame 11 includes two support plates 111 symmetrically disposed on two sides of the hub 12 and a plurality of connecting columns respectively connecting the two support plates 111, and the fixing frame 11 is configured as a split structure to facilitate the assembly and disassembly of the hub 12; specifically, the connecting columns include a first connecting column 1121 and a second connecting column 1122, two first connecting columns 1121 are symmetrically arranged in the rope outlet direction of the support plate 111 close to the hub 12, and the first connecting columns 1121 not only have a connecting function, but also have a limiting function on the rope, so that the rope can be conveniently wound; the rope outlet direction of the support plate 111 far away from the hub 12 is provided with a second connecting column 1122, the diameter of the second connecting column 1122 is larger than that of the first connecting column 1121, the second connecting column 1122 can be hung on an embedded part of a building body, so that the descent control device 10 is fixed, and a user connects the free end of the rope to descend.

Referring to fig. 1 to 3, in some embodiments, the fixing frame 11 is further provided with a guiding mechanism for guiding the rope, the guiding mechanism includes a first roller set 41 and a second roller set 42, and the first roller set 41 and the second roller set 42 are vertically arranged to position the rope; the first roller group 41 is composed of two first guide rollers 411 arranged in parallel, and a gap for a rope to pass through is arranged between the two first guide rollers 411; the second roller group 42 is composed of two second guide rollers 421 arranged in parallel, a shaft sleeve 422 is rotatably sleeved on the second guide roller 421 for the rope to be wound, a gap for the rope to pass through is formed between the shaft sleeve 422 and the other second guide roller 421, the outer diameter of the shaft sleeve 422 is larger than the outer diameters of all the guide rollers, the bending radius of the rope is increased, the damage of the rope is reduced, the steel rope is particularly obvious, the bending stress of the rope is also reduced, and the rope is wound and unwound more smoothly.

Referring to fig. 3, in some embodiments, a plane coincident with the hub axis is used as a first reference plane, and the first reference plane is used as a section of the centrifugal deceleration mechanism, wherein in the section, the distance between the axis of the first guide roller on the side far away from the user and the support plate on the side far away from the user is L1, the distance between the axis of the first guide roller on the side far away from the user and the support plate on the side close to the user is L2, and the distances between the axes of the first guide roller on the side far away from the user and the support plate on the side close to the user are L2, wherein L1: L2 are 1: 1.5-1.8; preferably, L1: L2 is 1: 1.6-1.7; most preferably, L1: L2 is 1: 1.72; by limiting the relationship between L1 and L2, the distance between the pull-out position of the rope from the descent control device and the user is controlled, the inclination angle of the user during descending is reduced, and the balance of the user during descending with the descent control device 10 is guaranteed.

Referring to fig. 8, in some embodiments, the diameter of the side plate 15 is D1, the diameter of the bushing is D2, the plane perpendicular to the hub axis is used as a second datum plane, the projection point of the bushing axis on the second datum plane is used as a first datum point C1, and the projection point of the hub axis on the second datum plane is used as a second datum point C2, wherein the length of the connection line between C1 and C2 is L3, (0.54-0.6) (D1+ D2) > L3>0.5(D1+ D2); preferably, (0.56-0.58) × (D1+ D2) > L3>0.5(D1+ D2); most preferably, 0.57 × (D1+ D2) > L3>0.5(D1+ D2); the distance between the guide mechanism and the hub 12 is reduced while the bending radius of the rope is ensured, so that the structure is compact, and the space occupied by the whole descent control device 10 is reduced.

Referring to fig. 15, in some embodiments, both ends of the second guide roller 421 are rotatably connected to the support plates 111, the first set of guide rollers 411 is mounted between the two support plates 111 through a mounting seat 412, the mounting seat 412 is formed by connecting two parts 4121 with the same shape end to end and is fixed by fastening screws, the first guide roller 411 is mounted between the two parts 4121, so that the second guide roller 421 is perpendicular to the first guide roller 411 to limit the rope, and the first and second guide rollers are convenient to mount in this mounting manner.

Referring to fig. 11, in some embodiments, 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 slot in which the rope is wound, so as to facilitate winding and unwinding of the rope, and limit the rope wound on the hub 12; the hub 12 is further provided with a fixing groove 121 for fixing the end of the rope, so that the rope can be conveniently and fixedly connected.

In some embodiments, the rope is made of steel wire, nylon, plastic or carbon fiber materials, and the rope is wrapped with a fireproof layer or added with fireproof materials. This embodiment is a steel wire. The rope is subjected to fireproof treatment, can resist high temperature of more than 1000 ℃, and improves safety.

Referring to fig. 12, in some embodiments, the support plate 111 on one side is provided with a backpack plate 16, and the backpack plate 16 is provided with a plurality of connecting holes 161 capable of being connected with a backpack or a shoulder strap.

Referring to fig. 12, in some embodiments, a brake device 51 is installed on a side plate 111 away from the backpack plate 16, the brake device 51 is purchased and its structure is not described in detail, the brake device 51 cooperates with the side plate 15 to brake the hub 12, so that after a user descends to a non-dangerous floor level, the user can limit the rotation of the hub 12 through the brake device 51, and thus can escape quickly. Wherein, a battery 52 electrically connected with the brake device 51 is arranged on the side plate 111 far away from the backpack plate 16 and is used for supplying power to the brake device 51.

Referring to fig. 13 and 14, in some embodiments, a driving mechanism 60 associated with the main shaft 21 for driving the main shaft 21 to rotate is further mounted on the side plate 111 away from the backpack plate 16, so that the main shaft 21 drives the hub 12 to rotate through the transmission mechanism 30 to recover the rope, so that the descent control device 10 is restored to the original state for recycling; the driving mechanism 60 comprises a first bevel gear 61, a second bevel gear 62, a transmission case 63, a motor 64 and a motor base 65; the first bevel gear 61 is sleeved on the main shaft 21 and is in spline connection with the main shaft 21 to be in rotation stopping fit; the second bevel gear 62 is meshed with the first bevel gear 61 and is connected with an output shaft of the motor 64; the outer diameter of the first bevel gear 61 is larger than that of the second bevel gear 62, so that the main shaft 21 obtains higher rotating speed, and the efficiency of recovering the rope by the hub 12 is ensured; the transmission case 63 is mounted on the support plate 111, and surrounds the support plate 111 to form a transmission cavity to protect the first and second bevel gears, and at least part of the output shaft of the motor 64 extends into the transmission cavity to be connected with the second bevel gear 62; the motor base 65 is arranged on the support plate 111 and used for fixing the motor 64; the battery 52 is mounted on the support plate 111 or the motor 64, and the battery 52 supplies power to the brake device 51 and the motor 64 respectively.

Referring to fig. 15, in some embodiments, the mass of the storage battery 52 is m1, the mass of the brake device 51 is m2, a plane perpendicular to the axis of the hub 12 is used as a second reference plane, a straight line intersecting the axis of the hub 12 and vertical is used as a first reference line R1, a projection point of a center of a smallest spherical surface capable of completely covering the storage battery 52 on the second reference plane is E1, a vertical distance from the E1 to the first reference line R1 is L4, a projection point of a center of the smallest spherical surface capable of completely covering the brake device 51 on the second reference plane is E2, and a vertical distance from the E6342 to the first reference line R1 is L5, where m 1L 4 is (0.8-1.2) m 2L 5, preferably, m 1L 5 is (0.9-1.1) m2, and most preferably m1 is m 599L 599; by arranging the mounting positions of the storage battery 52 and the brake device 51, the moments generated by the storage battery 52 and the brake device 51 deviating from the axis of the hub 12 are mutually offset, and the balance of the whole descent control device is improved.

Referring to fig. 16, when the entire descent control device is in an inclined state, a plane passing through the main shaft axis R0 and vertically arranged is taken as a third reference surface, a projection point of the center of the smallest spherical surface capable of completely covering the storage battery 52 on the third reference surface is taken as E3, a projection point of the center of the smallest spherical surface capable of completely covering the brake device 51 on the third reference surface is taken as E4, an intersection point of a projection of the hub axis on the third reference surface and an E3E4 is taken as E5, a horizontal straight line passing through E5 is taken as a second reference line R2, a vertical distance from E3 to the second reference line R2 is taken as L6, and a vertical distance from E4 to the second reference line R2 is taken as L7, wherein m1 is (0.8-1.2) m 2L 6, preferably m 6 is (0.9-1.1.2) m2, and most preferably m 867 is taken as 368672L 8672; by setting the mounting positions of the battery 52 and the brake device 51, the inclination angle of the descent control device in use is adjusted, and the balance of the entire descent control device is improved.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. The utility model provides a recoverable ware that slowly falls of rope which characterized in that: comprises that

A fixed frame (11);

the hub (12) is rotatably arranged on the fixed frame (11) and is used for winding a rope;

a fixing groove (121) provided in the hub (12) and fixing an end of a rope;

the fixed frame (11) is provided with a guide mechanism for guiding the rope, the guide mechanism comprises a first roller set (41) and a second roller set (42), and the first roller set (41) and the second roller set (42) are vertically arranged; the first roller group (41) is composed of two first guide rollers (411) which are arranged in parallel; the second roller group (42) consists of two second guide rollers (421) which are arranged in parallel, and a shaft sleeve (422) is rotatably sleeved on the second guide roller (421) for the rope to be folded; a plane coincident with the axis of the hub is taken as a first reference plane, the first reference plane is taken as a section of the centrifugal speed reducing mechanism, on the section, the distance between the axis of the first guide roller (411) far away from the user and the inner wall of the fixing frame (11) far away from the user is L1, the distance between the axis of the first guide roller (411 far away from the user and the inner wall of the fixing frame (11) near the user is L2, and L1: L2 are 1: 1.5-1.8.

2. The rope-retractable descent control device as claimed in claim 1, wherein: side plates (15) are arranged on two sides of the hub (12); the fixed frame (11) is provided with a brake device (51) which is matched with the side plate (15) to brake the hub (12); and a storage battery (50) for supplying power to the brake device (51) is arranged on the fixed frame (11).

3. The rope-retractable descent control device as claimed in claim 1, wherein: the centrifugal speed reducing mechanism (20) is associated with the hub (12) to limit the rotating speed of the hub (12), the centrifugal speed reducing mechanism (20) comprises a main shaft (21) which penetrates through the hub (12) and can be rotatably arranged on the fixed frame, a plurality of guide rods (23) which are arranged along the circumferential direction of the main shaft (21), and a centrifugal block (24) which is slidably sleeved on the guide rods (23), and the hub (12) drives the main shaft (21) to rotate through a transmission mechanism (30); when the main shaft (21) drives the guide rod (23) to rotate, the centrifugal block (24) is in friction fit with the inner wall of the hub (12) under the action of centrifugal force; the fixing frame is further provided with a driving mechanism (60) which is associated with the spindle (21) to drive the spindle (21) to rotate, the driving device (60) comprises a transmission case (63) arranged on the fixing frame (11), a first bevel gear (61) which is arranged in the transmission case (63) and is in rotation stop fit with the spindle (21), a second bevel gear (62) which is arranged in the transmission case (63) and is meshed with the first bevel gear (61), and a motor (64) for driving the second bevel gear (62) to rotate, and the motor (64) is arranged on the fixing frame (11) through a motor base (65).

4. The rope-retractable descent control device according to claim 3, wherein: the main shaft (21) is associated with the guide rod (23) through a one-way clutch assembly (22) to drive the guide rod (23) to rotate in one direction; the one-way clutch assembly (22) comprises a one-way bearing (221) sleeved on the main shaft (21) and a lantern ring (222) sleeved on the one-way bearing (221), wherein an inner ring of the one-way bearing (221) is in rotation stopping fit with the main shaft (21), an outer ring of the one-way bearing (221) is in rotation stopping fit with the lantern ring (222), and one end, facing the main shaft (21), of the guide rod (23) is connected with the lantern ring (222).

5. The rope-retractable descent control device according to claim 4, wherein: two groups of one-way clutch assemblies (22) are arranged, two guide rods (23) are matched with the same centrifugal block (24), and the two guide rods (23) correspond to the two groups of one-way clutch assemblies (22) one by one; and/or the main shaft (21) is provided with a first diameter expanding part (211), and the one-way bearings (221) of the two sets of one-way clutch assemblies (22) are symmetrically arranged at two sides of the first diameter expanding part (211).

6. The rope-retractable descent control device of claim 5, wherein: one end of the lantern ring (222), which is far away from the first diameter expanding part (211), is provided with a baffle (223), and screws/bolts are used for sequentially penetrating through one baffle (223), the two lantern rings (222) and the other baffle (223) and then are fixed by the bolts; and/or the guide rod (23) is sleeved with an elastic piece (25), one end of the elastic piece (25) is connected with the periphery of the lantern ring (222), and the other end of the elastic piece (25) is connected with the centrifugal block (24).

7. The rope-retractable descent control device as claimed in claim 1, wherein: side plates (15) are arranged on two sides of the hub (12); the diameter of the side plate (15) is set to be D1, the diameter of the shaft sleeve (422) is set to be D2, a plane perpendicular to the axis of the hub (12) is used as a second reference surface, the projection point of the axis of the shaft sleeve (422) on the second reference surface is used as a first reference point C1, the projection point of the axis of the hub (12) on the second reference surface is used as a second reference point C2, and the length of a connecting line between C1 and C2 is L3, wherein (0.54-0.6) × (D1+ D2) > L3>0.5(D1+ D2).

8. The rope-retractable descent control device as claimed in claim 2, wherein: the mass of the storage battery (52) is m1, the mass of the brake device (51) is m2, a plane perpendicular to the axis of the hub (12) is used as a second reference plane, a straight line which is intersected with the axis of the hub (12) and is vertical to the axis of the hub is used as a first reference line R1, the projection point of the center of a minimum spherical surface which can completely cover the storage battery (52) on the second reference plane is E1, the vertical distance from the E1 to the first reference line R1 is L4, the projection point of the center of the minimum spherical surface which can completely cover the brake device (51) on the second reference plane is E2, and the vertical distance from the E2 to the first reference line R1 is L5, wherein m 1L 4 is (0.8-1.2) m 2L 5; and/or when the entire descent control device is in an inclined state, a plane which passes through the axis of the main shaft and is vertically arranged is taken as a third reference surface, a projection point of the center of the minimum spherical surface which can completely cover the storage battery (52) on the third reference surface is taken as E3, a projection point of the center of the minimum spherical surface which can completely cover the braking device (51) on the third reference surface is taken as E4, an intersection point of a projection of the axis of the hub (12) on the third reference surface and an E3E4 connecting line is taken as E5, a horizontal straight line which passes through E5 is taken as a second reference line R2, the vertical distance from E3 to the second reference line R2 is taken as L6, and the vertical distance from E4 to the second reference line R2 is taken as L7, wherein m 1L 6 is (0.8-1.2) m 2L 6.

9. The rope-retractable descent control device according to claim 3, wherein: the transmission mechanism comprises a gear ring (31) arranged on the inner wall of the hub (12), a plurality of planetary gears (32) respectively meshed with the gear ring (31), and a central gear (33) sleeved on the main shaft (21) and in rotation stopping fit with the main shaft (21), wherein the central gear (33) is simultaneously meshed with the plurality of planetary gears (32).

10. A high altitude knapsack of fleing which characterized in that: comprising a rope-retractable descent control device as defined in any one of claims 1 to 8, the altitude escape backpack further comprising:

the descent control device is arranged in the backpack;

the shoulder strap is connected with the backpack and used for being tied on the body of the user.