A firefighter emergency self-rescue device with adjustable descent speed

Abstract

The application relates to a firefighter emergency self-rescue device with adjustable descending speed and relates to the technical field of emergency rescue devices for fire fighting. The device comprises a self-rescue rope, a self-rescue shell, an adjusting piece and an O-shaped lock. The self-rescue shell is arranged on the self-rescue rope, the self-rescue shell is provided with a penetrating through hole, the self-rescue rope is bent, and the bent part of the self-rescue rope penetrates through the penetrating through hole. The adjusting piece is rotatably arranged on the self-rescue shell, and one end of the self-rescue rope is wound on the adjusting piece. The self-rescue rope is arranged on the O-shaped lock. Before descending, the firefighter can select the number of turns of the self-rescue rope wound on the adjusting piece, adjust the friction between the self-rescue rope and the adjusting piece, control the descending speed of the firefighter using the firefighter emergency self-rescue device with adjustable descending speed, improve the adaptability and overall reliability of the application, ensure the safety of the firefighter, and solve the problems that the existing firefighter emergency self-rescue device cannot adjust the descending speed and has low reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of emergency rescue devices for fire fighting, and in particular to an emergency self-rescue device for firefighters with adjustable descent speed. Background Technology

[0002] In fire and emergency situations, firefighters need to descend rapidly and in a controlled manner from high-temperature areas to the lower floors of buildings and structures.

[0003] However, existing emergency self-rescue devices cannot adjust the descent speed according to the actual needs or weight of firefighters. This may result in heavier firefighters descending faster while lighter firefighters descend slower, leading to low reliability.

[0004] Regarding the aforementioned technologies, existing firefighter emergency self-rescue devices suffer from the problem that the descent speed cannot be adjusted and their reliability is low. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a firefighter emergency self-rescue device with adjustable descent speed, which aims to solve the problems of existing firefighter emergency self-rescue devices being unable to adjust the descent speed and having low reliability.

[0006] This application provides a firefighter emergency self-rescue device with adjustable descent speed, employing the following technical solution: A firefighter emergency self-rescue device with adjustable descent speed, comprising:

[0007] Self-rescue rope;

[0008] The self-rescue shell is mounted on the self-rescue rope and has a through hole for bending the self-rescue rope, with the bent portion of the self-rescue rope passing through the through hole.

[0009] An adjusting component is rotatably mounted on the self-rescue housing, and one end of the self-rescue rope is wound around the adjusting component;

[0010] The O-ring is used to secure the firefighter to the body, and the self-rescue rope is threaded through the O-ring.

[0011] Optionally, the adjusting component includes a rotating roller and a bracket, with two brackets provided. The two brackets are disposed on the self-rescue housing, and the rotating roller is rotatably disposed between the two brackets. One end of the self-rescue rope is wound around the rotating roller.

[0012] Optionally, one end of the through hole is a first opening, and the other end of the through hole is a second opening. The adjusting member is disposed on the side of the self-rescue housing with the first opening, and the O-lock is disposed on the side of the self-rescue housing with the second opening.

[0013] Optionally, the firefighter emergency self-rescue device with adjustable descent speed includes a braking component, which is disposed on the self-rescue housing and has a braking groove disposed near the adjusting component. The braking groove is used to engage the self-rescue rope.

[0014] Optionally, the brake groove is provided with friction texture.

[0015] Optionally, the groove wall of the brake groove is provided with a first rounded corner.

[0016] Optionally, multiple through holes are provided, and the multiple through holes are spaced apart on the self-rescue shell.

[0017] Optionally, the self-rescue shell is provided with heat dissipation holes, which are connected to the through hole.

[0018] Optionally, the self-rescue rope is a high-temperature resistant rope.

[0019] Optionally, the transition points of the self-rescue shell are all provided with a second rounded corner.

[0020] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0021] One end of the self-rescue rope is set in a fixed position. Then, the rope body is bent so that the bent part of the self-rescue rope passes through the through hole from one side of the self-rescue shell and extends out from the other side of the self-rescue shell.

[0022] Open the O-lock, insert the self-rescue rope that is passing through the through hole into the O-lock's enclosed space and lock it, then secure the O-lock to the firefighter.

[0023] The other end of the self-rescue rope is wrapped around the adjusting piece and extends out.

[0024] During use, because the O-lock is connected to the firefighter's body, when the firefighter is descending, the self-rescue rope gets tangled around the adjusting device. The tangled contact between the self-rescue rope and the adjusting device increases the friction on the self-rescue rope, thereby slowing down the firefighter's descent speed.

[0025] Before falling, firefighters can adjust the number of turns of the self-rescue rope around the adjusting device according to their own situation, thereby adjusting the friction between the self-rescue rope and the adjusting device. This controls the descent speed of the firefighter using the adjustable descent speed emergency self-rescue device, improving the adaptability and overall reliability of this application, ensuring the safety of firefighters, and solving the problem that existing firefighter emergency self-rescue devices cannot adjust the descent speed and have low reliability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the firefighter emergency self-rescue device with adjustable descent speed in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the structure of the self-rescue shell of the firefighter emergency self-rescue device with adjustable descent speed in the embodiments of this application;

[0029] Figure 3 This is a schematic diagram of the firefighter emergency self-rescue device with adjustable descent speed in the embodiments of this application, without the self-rescue rope and O-lock;

[0030] Figure 4 This is a schematic diagram of the braking component of the firefighter emergency self-rescue device with adjustable descent speed in the embodiments of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Self-rescue rope; 11. Fixed end; 12. Control end; 2. Self-rescue outer shell; 21. Through hole; 211. First opening; 212. Second opening; 3. Adjusting component; 31. Rotating roller; 32. Brake; 4. O-lock; 5. Braking component; 51. Brake groove; 52. Friction pattern; 53. Limiting hole. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The present application will be further described in detail below with reference to the accompanying drawings.

[0035] This application discloses an emergency self-rescue device for firefighters with adjustable descent speed.

[0036] like Figure 1 As shown, a firefighter emergency self-rescue device with adjustable descent speed includes a self-rescue rope 1, a self-rescue housing 2, an adjusting member 3, and an O-lock 4. The self-rescue housing 2 is mounted on the self-rescue rope 1 and has an insertion hole 21. The self-rescue rope 1 is bent, and the bent part of the self-rescue rope 1 passes through the insertion hole 21. The adjusting member 3 is rotatably mounted on the self-rescue housing 2, and one end of the self-rescue rope 1 is wrapped around the adjusting member 3. The O-lock 4 is used to fix the firefighter to the body, and the self-rescue rope 1 that passes through the insertion hole 21 is threaded onto the O-lock 4.

[0037] One end of the self-rescue rope 1 is set in a fixed position. Then, the rope body of the self-rescue rope 1 is bent so that the bent part of the self-rescue rope 1 passes through the through hole 21 from one side of the self-rescue shell 2 and extends out from the other side of the self-rescue shell 2.

[0038] Open the O-lock 4, lock the self-rescue rope 1 that is passing through the through hole 21 into the O-lock 4 and lock it, then fix the O-lock 4 to the firefighter.

[0039] The other end of the self-rescue rope 1 is wrapped around the adjusting component 3 and extends out.

[0040] During use, since the O-lock 4 is connected to the firefighter's body, when the firefighter is descending, the self-rescue rope 1 is wrapped around the adjusting component 3. The entanglement between the self-rescue rope 1 and the adjusting component 3 increases the friction on the self-rescue rope 1, thereby slowing down the firefighter's descent speed.

[0041] Before falling, firefighters can adjust the friction between the self-rescue rope 1 and the adjusting component 3 by choosing the number of turns of the self-rescue rope 1 around the adjusting component 3 according to their own situation. This controls the descent speed of the firefighter using the adjustable descent speed emergency self-rescue device, improves the adaptability and overall reliability of this application, ensures the safety of firefighters, and solves the problem that existing firefighter emergency self-rescue devices cannot adjust the descent speed and have low reliability.

[0042] like Figure 1 and Figure 2 As shown, one end of the through hole 21 is the first opening 211, and the other end is the second opening 212. The adjusting member 3 is provided on the side of the self-rescue housing 2 with the first opening 211, and the O-lock 4 is provided on the side of the self-rescue housing 2 with the second opening 212.

[0043] Specifically, the through hole 21 connects the upper and lower surfaces of the self-rescue shell 2, the first opening 211 is located on the upper surface of the self-rescue shell 2, and the second opening 212 is located on the lower surface of the self-rescue shell 2.

[0044] One end of the self-rescue rope 1 is a fixed end 11, and the other end is a control end 12.

[0045] After the self-rescue rope 1 is bent, the fixed end 11 and the control end 12 are located on one side of the first opening 211, and the bent part of the self-rescue rope 1 is the bent part. The bent part is inserted into the through hole 21 from one side of the first opening 211 and extends out from the second opening 212.

[0046] The fixed end 11 is used to fix the firefighter at the starting position before the firefighter descends. For example, if the firefighter is to descend from the fourth floor of the building to the ground, the fixed end 11 can be wrapped or tied to a stable object on the fourth floor to facilitate the firefighter's descent using the firefighter emergency self-rescue device with adjustable descent speed.

[0047] The control end 12 extends out of the adjusting member 3 after being wrapped around the adjusting member 3 at least once.

[0048] The friction experienced by the self-rescue rope 1 can be adjusted by changing the number of turns wound on the adjusting component 3, thereby controlling the descent speed of the firefighter and improving the safety and reliability of using the firefighter emergency self-rescue device with adjustable descent speed.

[0049] The specific number of wraps needed to find the appropriate descent speed depends on the firefighters' weight; different firefighters can conduct experiments beforehand to determine the appropriate descent speed for each number of wraps. This will not be elaborated upon here.

[0050] It should be noted that when the control end 12 is wound around the adjusting member 3 two or more times, each turn of the self-rescue rope 1 is wound around the adjusting member 3, rather than the unwound self-rescue rope 1 being wrapped around the already wound self-rescue rope 1, resulting in superimposed winding.

[0051] The O-lock 4 is a "quick-release" (also known as a carabiner or safety hook). The quick-release eliminates the traditional lock cylinder and uses a spring door and locking structure to achieve rapid opening and closing, which can reduce the weight of the equipment.

[0052] The O-ring 4 is connected to the bent part (i.e., they are interlocked, with the bent part passing through the annular hole of the O-ring 4 so that the two are locked together).

[0053] Quick-draw hooks can be attached to another quick-draw hook or belt that can be fastened to a firefighter.

[0054] The quick-release mechanism allows firefighters to be quickly secured to the firefighter emergency self-rescue device, which has an adjustable descent speed.

[0055] When firefighters use an adjustable descent speed firefighter emergency self-rescue device to fall from a height, after assembling the adjustable descent speed firefighter emergency self-rescue device and attaching it to themselves (whereby the firefighter will wrap the self-rescue rope 1 with the number of turns according to their own needs on the adjusting part 3), the firefighter can hold the self-rescue rope 1 near the control end 12 with one hand and slowly descend downwards.

[0056] like Figure 1 and Figure 3 As shown, the adjusting component 3 includes a rotating roller 31 and a bracket 32. There are two brackets 32, which are set on the self-rescue housing 2. The rotating roller 31 is rotatably set between the two brackets 32, and one end of the self-rescue rope 1 is wrapped around the rotating roller 31.

[0057] Specifically, two brackets 32 are set on the upper surface of the self-rescue shell 2.

[0058] The rotating roller 31 is cylindrical, and its two ends are rotatably connected to its corresponding brackets 32.

[0059] The adjustable descent speed firefighter emergency self-rescue device of this application utilizes the working principle of a movable pulley. If the self-rescue rope 1 is not wrapped around the adjusting component 3, it will slide under the firefighter's own weight, causing the firefighter to descend. During this process, there is contact and compression between the self-rescue rope 1 and the inner wall of the through hole 21, as well as between the self-rescue rope 1 and the O-lock 4. The friction between these two is relatively small, causing the firefighter to fall at a very high speed, posing a significant risk to their safety.

[0060] By winding the self-rescue rope 1 around the rotating roller 31, the self-rescue rope 1 must overcome the friction between itself and the adjusting member 3 to slide. Therefore, this friction can be used to achieve a damping effect, thereby slowing down the firefighter's descent speed.

[0061] It should be noted that the rotating roller 31 and the bracket 32 ​​can also be fixedly connected, meaning that the rotating roller 31 does not rotate relative to the self-rescue housing 2. In this case, the self-rescue rope 1 is wound around the rotating roller 31, and the friction between the self-rescue rope 1 and the adjusting component 3 is pure sliding friction.

[0062] When the self-rescue rope 1 is wound around the rotating roller 31 the same number of times, the rotating roller 31 and the bracket 32 ​​can also be fixedly connected. The self-rescue rope 1 will be subject to greater friction, making it suitable for people with larger body weight.

[0063] like Figure 1 , Figure 3 and Figure 4As shown, the firefighter emergency self-rescue device with adjustable descent speed includes a brake component 5, which is installed on the self-rescue housing 2. The brake component 5 is provided with a brake groove 51, which is located near the adjusting component 3. The brake groove 51 is used to engage the self-rescue rope 1.

[0064] Specifically, after the self-rescue rope 1 is wound around the rotating roller 31, the control end 12 will extend from the rotating roller 31 and abut against the brake groove 51.

[0065] During the descent using the adjustable descent speed firefighter emergency self-rescue device, one of the firefighters will hold the self-rescue rope 1 near the control end 12. When the firefighter needs to stop descending, he only needs to hold the self-rescue rope 1 and swing it downwards. At this time, the self-rescue rope 1 will abut against the brake groove 51 and self-lock, preventing the self-rescue rope 1 from sliding, thereby stopping the firefighter's descent.

[0066] As the firefighter continues to descend, he only needs to hold the self-rescue rope 1 and swing it upwards so that the self-rescue rope 1 is no longer in contact with the brake groove 51. At this time, the self-rescue rope 1 will no longer be self-locked and can slide normally, allowing the firefighter to descend normally.

[0067] Furthermore, the brake component 5 is provided with a limiting hole 53, which is connected to the brake groove 51.

[0068] When installing the firefighter emergency self-rescue device with adjustable descent speed, the self-rescue rope 1 needs to pass through the limiting hole 53 before entering the brake groove 51.

[0069] Since the number of turns of the self-rescue rope 1 on the rotating roller 31 varies depending on the firefighter's own situation, the final position of the control end 12 of the self-rescue rope 1 extending from the rotating roller 31 also varies. In order to facilitate the stable extension of the control end 12 into the brake groove 51 and to prevent the control end 12 from detaching from the brake groove 51, the control end 12 needs to be limited by the limiting hole 53 before entering the brake groove 51.

[0070] It should be noted that the diameter of the limiting hole 53 is greater than or equal to the cross-sectional diameter of the self-rescue rope 1, and the diameter of the limiting hole 53 is less than or equal to twice the cross-sectional diameter of the self-rescue rope 1.

[0071] like Figure 1 and Figure 4 As shown, friction grooves 52 are provided inside the brake groove 51.

[0072] Specifically, friction patterns 52 are provided on the opposite sidewalls of the brake groove 51.

[0073] The self-rescue rope 1 has a certain deformable space. When the self-rescue rope 1 abuts against the brake groove 51, both sides of the self-rescue rope 1 will come into contact with the friction texture 52 and be squeezed, thereby increasing the friction force on the self-rescue rope 1, further preventing the self-rescue rope 1 from slipping, and improving the stability of the braking function of the firefighter emergency self-rescue device with adjustable descent speed.

[0074] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, multiple through holes 21 are provided, and the multiple through holes 21 are spaced apart on the self-rescue outer shell 2.

[0075] Specifically, multiple through holes 21 are provided, and a self-rescue rope 1 can be threaded into each through hole 21. Multiple self-rescue ropes 1 can be threaded into the self-rescue shell 2 as needed to increase the contact area between the self-rescue rope 1 and the O-ring lock 4, thereby increasing the overall friction of the self-rescue rope 1 and achieving the purpose of slowing down the lifeguard's descent speed.

[0076] Meanwhile, multiple through holes 21 are provided. If one of the through holes 21 fails to pass through or slide within the through hole 21 due to an accident, other through holes 21 can be used as backups, which improves the reliability of the firefighter emergency self-rescue device with adjustable descent speed.

[0077] The brake component 5 is provided with brake grooves 51 and limiting holes 53 corresponding to the number of through holes 21.

[0078] It should be noted that the number of O-locks 4 can be set to one or correspond to the number of self-rescue ropes 1. When there is only one O-lock 4, multiple self-rescue ropes 1 can be connected to this one O-lock 4 at the same time.

[0079] The self-rescue outer shell 2 is provided with heat dissipation holes, which are connected to the through hole 21.

[0080] Specifically, there are multiple heat dissipation holes, which are spaced apart on the self-rescue outer shell 2.

[0081] During the sliding process, the self-rescue rope 1 may rub against the inner wall of the through hole 21, which will generate a lot of heat. Since the heat dissipation hole is connected to the through hole 21, the generated heat can be discharged to the outside through the heat dissipation hole, thus achieving heat dissipation.

[0082] The brake groove 51 has a first rounded corner on its groove wall.

[0083] Specifically, the first rounded corner is set on the opening of the brake groove 51 and is located at the position where the self-rescue rope 1 contacts the brake groove 51.

[0084] During the use of the firefighter emergency self-rescue device with adjustable descent speed, the self-rescue rope 1 may be repeatedly squeezed against the brake element 5 to achieve braking. During the squeezing process of the self-rescue rope 1 against the brake element 5, part of the self-rescue rope 1 will be squeezed against the groove opening of the brake groove 51. The first rounded corner set on the groove opening of the brake groove 51 can reduce the stress concentration on the self-rescue rope 1, reduce the wear on the self-rescue rope 1, increase the service life of the self-rescue rope 1, and prevent the self-rescue rope 1 from breaking and affecting the life safety of the firefighter.

[0085] Self-rescue rope 1 is a high-temperature resistant rope.

[0086] Since the application scenario of the adjustable descent speed firefighter emergency self-rescue device is generally a fire scene, the surrounding environment is high temperature. The self-rescue rope 1 is a high temperature resistant rope to prevent the self-rescue rope 1 from being broken by the surrounding high temperature environment or flames, which would cause the adjustable descent speed firefighter emergency self-rescue device to fail or break during the firefighter's descent, thus affecting the firefighter's life safety.

[0087] The transition points of the self-rescue outer shell 2 are all equipped with a second rounded corner.

[0088] Specifically, the self-rescue shell 2 is generally made of metal, which is relatively hard. Therefore, the transition points on the outer surface of the self-rescue shell 2 are relatively sharp, which may cause injury to firefighters during carrying or use.

[0089] The transition point of the self-rescue shell 2 is equipped with a second rounded corner, which can reduce stress concentration at the transition point of the self-rescue shell 2 and improve the safety of firefighters when carrying or using the firefighter emergency self-rescue device with adjustable descent speed.

[0090] In summary, a firefighter emergency self-rescue device with adjustable descent speed includes a self-rescue rope 1, a self-rescue housing 2, an adjusting member 3, and an O-lock 4. The self-rescue housing 2 is mounted on the self-rescue rope 1 and has an insertion hole 21. The self-rescue rope 1 is bent, and the bent part of the self-rescue rope 1 passes through the insertion hole 21. The adjusting member 3 is rotatably mounted on the self-rescue housing 2, and one end of the self-rescue rope 1 is wrapped around the adjusting member 3. The O-lock 4 is used to fix the firefighter to the body, and the self-rescue rope 1, which passes through the insertion hole 21, is threaded onto the O-lock 4.

[0091] One end of the self-rescue rope 1 is set in a fixed position. Then, the rope body of the self-rescue rope 1 is bent so that the bent part of the self-rescue rope 1 passes through the through hole 21 from one side of the self-rescue shell 2 and extends out from the other side of the self-rescue shell 2.

[0092] Open the O-lock 4, lock the self-rescue rope 1 that is passing through the through hole 21 into the O-lock 4 and lock it, then fix the O-lock 4 to the firefighter.

[0093] The other end of the self-rescue rope 1 is wrapped around the adjusting component 3 and extends out.

[0094] During use, since the O-lock 4 is connected to the firefighter's body, when the firefighter is descending, the self-rescue rope 1 is wrapped around the adjusting component 3. The entanglement between the self-rescue rope 1 and the adjusting component 3 increases the friction on the self-rescue rope 1, thereby slowing down the firefighter's descent speed.

[0095] Before falling, firefighters can adjust the friction between the self-rescue rope 1 and the adjusting component 3 by choosing the number of turns of the self-rescue rope 1 around the adjusting component 3 according to their own situation. This controls the descent speed of the firefighter using the adjustable descent speed emergency self-rescue device, improves the adaptability and overall reliability of this application, ensures the safety of firefighters, and solves the problem that existing firefighter emergency self-rescue devices cannot adjust the descent speed and have low reliability.

[0096] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0097] It should be noted that this utility model is used as an example of a firefighter emergency self-rescue device with adjustable descent speed to introduce the specific structure and working principle of this utility model. However, the application of this utility model is not limited to a firefighter emergency self-rescue device with adjustable descent speed, and it can also be applied to the production and use of other similar products.

[0098] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A firefighter emergency self-rescue device with adjustable descent speed, characterized in that, include: Self-rescue rope; The self-rescue shell is mounted on the self-rescue rope and has a through hole for bending the self-rescue rope, with the bent portion of the self-rescue rope passing through the through hole. An adjusting component is rotatably mounted on the self-rescue housing, and one end of the self-rescue rope is wound around the adjusting component; The O-ring is used to secure the firefighter to the body, and the self-rescue rope is threaded through the O-ring.

2. The firefighter emergency self-rescue device with adjustable descent speed according to claim 1, characterized in that, The adjusting component includes a rotating roller and a bracket. Two brackets are provided and are disposed on the self-rescue housing. The rotating roller is rotatably disposed between the two brackets, and one end of the self-rescue rope is wound around the rotating roller.

3. The firefighter emergency self-rescue device with adjustable descent speed according to claim 1, characterized in that, One end of the through hole is a first opening, and the other end of the through hole is a second opening. The adjusting member is located on the side of the self-rescue housing with the first opening, and the O-ring is located on the side of the self-rescue housing with the second opening.

4. The firefighter emergency self-rescue device with adjustable descent speed according to claim 3, characterized in that, The adjustable descent speed firefighter emergency self-rescue device includes a braking component, which is disposed on the self-rescue housing and has a braking groove. The braking groove is disposed near the adjusting component and is used to engage the self-rescue rope.

5. The firefighter emergency self-rescue device with adjustable descent speed according to claim 4, characterized in that, The brake groove is provided with friction texture.

6. The firefighter emergency self-rescue device with adjustable descent speed according to claim 4, characterized in that, The brake groove has a first rounded corner on its groove wall.

7. The firefighter emergency self-rescue device with adjustable descent speed according to claim 1, characterized in that, Multiple through holes are provided, and the multiple through holes are spaced apart on the self-rescue shell.

8. The firefighter emergency self-rescue device with adjustable descent speed according to claim 1, characterized in that, The self-rescue shell is provided with heat dissipation holes, which are connected to the through holes.

9. The firefighter emergency self-rescue device with adjustable descent speed according to claim 1, characterized in that, The self-rescue rope is a high-temperature resistant rope.

10. The firefighter emergency self-rescue device with adjustable descent speed according to claim 1, characterized in that, The transition points of the self-rescue shell are all equipped with a second rounded corner.

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