Slow descending device

Abstract

The slow descending device comprises a fixing plate, a first cam, a center rotating wheel, a second cam and a driving device, a first rotating shaft, a second rotating shaft and a third rotating shaft are sequentially arranged on the fixing plate, and a first sliding groove and a second sliding groove are formed in the fixing plate; the first cam rotates with the first rotating shaft as the center. The central rotating wheel rotates around the second rotating shaft; the second cam rotates by taking the third rotating shaft as the center; the driving device comprises a first rod piece, a second rod piece and a third rod piece which are sequentially connected, the middle of the second rod piece rotates around a second rotating shaft center, and the first rod piece and the second rod piece are slidably arranged in the first sliding groove and the second sliding groove respectively; gaps are formed between the first cam and the central rotating wheel as well as between the central rotating wheel and the second cam, and the first rod piece and the second rod piece are connected with the first cam and the second cam respectively. The stable and controllable slow descent effect is achieved, a user can stably descend to the ground only through simple operation, and complex training or professional skills are not needed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slow descent devices, in particular to a slow descent device. BACKGROUND

[0002] In the field of emergency rescue and escape, when people face high-rise fire, earthquake or other emergency situations, they need to quickly and safely descend from high altitude to the ground, and efficient slow descent devices become a crucial rescue tool.

[0003] Especially in the situation where people encounter a crisis and need to make an emergency slow descent from a high-rise building, the traditional slow descent device may have the following problems: first, the structure is complex and requires professional operation, making it difficult for non-professionals to use; second, the device is heavy and not portable or easy to deploy; third, the stability and controllability during the slow descent process are poor, making it difficult to meet the needs of people of different weights and physical abilities, increasing the risk of escape.

[0004] In view of the above problems, the market urgently needs a slow descent device that is simple in design, easy to operate and suitable for various people to meet the needs of high-altitude emergency escape. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a slow descent device that can provide reliable escape protection for users in emergency situations.

[0006] The above-mentioned purpose of the present application is achieved by the following technical solution:

[0007] A slow descent device, comprising: a fixed plate, a first cam, a center wheel, a second cam and a driving device, wherein the fixed plate is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft in sequence, and the fixed plate is provided with a first sliding groove and a second sliding groove; the first cam rotates around the first rotating shaft as the center; the center wheel rotates around the second rotating shaft as the center; the second cam rotates around the third rotating shaft as the center; the driving device comprises a first rod, a second rod and a third rod connected in sequence, the middle part of the second rod rotates around the second rotating shaft as the center, and the first rod and the second rod are slidably arranged in the first sliding groove and the second sliding groove respectively; the first cam and the center wheel and the center wheel and the second cam all have gaps for the rope to pass through, and the first rod and the second rod are connected with the first cam and the second cam respectively.

[0008] The present application further provides that the driving device further comprises a handle, and the handle is connected with the third rod.

[0009] The handle is provided with a plurality of holding portions arranged in a stepped manner along the length direction of the handle.

[0010] The fixed plate is provided with a fixed handle corresponding to the handle.

[0011] The fixed handle and the handle are connected with an elastic member.

[0012] The slow descending device further comprises a rotating pressing plate, which rotates around the second rotating shaft, and the first rotating shaft and the third rotating shaft are arranged in the first groove and the second groove of the rotating pressing plate respectively.

[0013] The rotating pressing plate and the fixed plate are arranged on the two sides of the first cam, the center rotating wheel and the second cam respectively.

[0014] The rotating pressing plate and the fixed handle are respectively provided with first safety buckle holes and second safety buckle holes corresponding to each other.

[0015] The first cam and the second cam are arc-shaped in the direction facing the center rotating wheel to form first guide portions and second guide portions.

[0016] The slow descending device further comprises a distance control device for controlling the gap between the first cam and the center rotating wheel, and the distance control device is arranged on one side of the first cam.

[0017] In summary, the application has the following beneficial technical effects:

[0018] 1. The application controls the gap between the first cam and the center rotating wheel and the gap between the center rotating wheel and the second cam on the fixed plate, so that the friction between the rope and the first cam, the center rotating wheel and the second cam is increased, or the first cam and the center rotating wheel or the center rotating wheel and the second cam clamp the rope to realize position fixing, which realizes smooth and controllable slow descending effect, and the user can smoothly descend to the ground only by simple operation without complicated training or professional skills.

[0019] 2. The application designs gaps for the rope to pass between the first cam and the center rotating wheel and between the center rotating wheel and the second cam, which not only facilitates the guidance and management of the rope, but also provides necessary friction or support during slow descending to control the descending speed of the rope and realize slow descending function. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of a fixed plate.

[0021] Figure 2 is a schematic view of a fixed plate.

[0022] Figure 3 is a schematic view of a sliding groove on a fixed plate.

[0023] BRIEF DESCRIPTION OF DRAWINGS 1, fixed plate; 11, first rotating shaft; 12, second rotating shaft; 13, third rotating shaft; 14, first sliding groove; 15, second sliding groove; 16, fixed handle; 17, elastic member; 2, first cam; 21, first guide part; 3, central rotating wheel; 4, second cam; 41, second guide part; 5, driving device; 51, first rod member; 52, second rod member; 53, third rod member; 54, handle; 541, gripping part; 6, rotating pressure plate; 61, first recess; 62, second recess; 63, first safety buckle hole; 64, second safety buckle hole; 7, distance control device. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings.

[0025] As shown in Figures 1-2 , a kind of slow descent device includes fixed plate 1, first cam 2, central rotating wheel 3, second cam 4 and driving device 5, wherein, fixed plate 1 is equipped with first rotating shaft 11, second rotating shaft 12 and third rotating shaft 13 in sequence, and fixed plate 1 is equipped with first sliding groove 14 and second sliding groove 15;First cam 2 rotates with first rotating shaft 11 as center;Central rotating wheel 3 rotates with second rotating shaft 12 as center;Second cam 4 rotates with third rotating shaft 13 as center;Driving device 5 includes sequentially connected in first rod member 51, second rod member 52 and third rod member 53, the middle part of second rod member 52 rotates with second rotating shaft 12 center, and first rod member 51 and second rod member 52 are slidably arranged in first sliding groove 14 and second sliding groove 15 respectively;First cam 2 and central rotating wheel 3 and central rotating wheel 3 and second cam 4 between both have gap for rope to pass through, and first rod member 51 and second rod member 52 are connected with first cam 2 and second cam 4 respectively.

[0026] Specifically, referring to Figure 2 , the middle part of second rod member 52 rotates with second rotating shaft 12 center, and the two ends of second rod member 52 are connected with first rod member 51 and third rod member 53 respectively, i.e. when second rod member 52 rotates, first rod member 51 and third rod member 53 will move, so that first rod member 51 and third rod member 53 have transmission relationship through second rod member 52.

[0027] The first rod 51 will produce two movements after sliding in the first sliding groove 14. First, because the first rod 51 is connected with the first cam 2, the sliding of the first rod 51 will drive the rotation of the first cam 2 around the first rotating shaft 11, thereby realizing the transformation of the gap between the first cam 2 and the central rotating wheel 3. Second, because of the transmission relationship mentioned above, the movement of the first rod 51 will drive the rotation of the second rod 52, and then the movement of the third rod 53, and finally the rotation of the second cam 4, thereby realizing the transformation of the gap between the central rotating wheel 3 and the first cam 2, and thus increasing the friction between the rope and the first cam 2, the central rotating wheel 3 and the second cam 4, and finally achieving slow descent. Similarly, the movement of the third rod 53 in the second sliding groove 15 will also change the gap and achieve slow descent.

[0028] Further, when the gap is small enough, the rope can be clamped and fixed.

[0029] Through the adjustment of the gap between the first cam 2, the central rotating wheel 3 and the second cam 4, and the linkage mechanism of the first rod 51, the second rod 52 and the third rod 53 connected with these cams, the device can realize precise control of the friction of the rope. Not only does it ensure the smooth and slow descent of the rope during the descent process, but it also allows users to adjust the descent speed as needed, providing higher operational flexibility and safety.

[0030] By skillfully using the first sliding groove 14 and the second sliding groove 15 on the fixed plate 1, and the connection mode of the cams and the rods, the compactness of the structure and the effective use of space are realized. This design makes the device small in size, light in weight, easy to carry and install, and is particularly suitable for occasions with limited space or the need for rapid deployment.

[0031] Since the device adjusts the friction of the rope through mechanical transmission, it has strong adaptability to ropes of different materials, diameters and weights. This means that the device can be widely used in various scenarios that require slow descent, such as rescue operations, aerial work platforms, outdoor exploration, etc.

[0032] When the gap is adjusted to be small enough, the device can clamp and fix the rope, providing additional safety for the user. This function is particularly important when the descent needs to be paused or the rope needs to be stabilized.

[0033] Since the device mainly relies on mechanical transmission and adjustment of cam gaps, its maintenance is relatively simple and has high durability. Compared with electronic slow descent devices, it is less affected by environmental factors and can operate stably in harsher environments.

[0034] Preferably, as Figure 2As shown, the sizes of the first sliding groove 14 and the second sliding groove 15 are greater than the sizes of the first rod 51 and the third rod 53, and the first rod 51 and the third rod 53 can move in the first sliding groove 14 and the second sliding groove 15 to facilitate the rotation of the second rod 52.

[0035] More preferably, as shown in the drawings, Figure 3 As shown, the first sliding groove 14 and the second sliding groove 15 are arc-shaped, which meets the rotation of the second rod 52 while meeting the rotation of the first cam 2 and the second cam 4.

[0036] Further, the driving device 5 further comprises a handle 54 connected with the third rod 53, which is convenient for the user to hold and pull to realize the movement of the third rod 53 in the second sliding groove 15, thereby changing the gap and achieving the effect of slow descent.

[0037] Preferably, in use, one end of the rope is fixed, the other end of the rope passes through the gap between the first cam 2 and the center wheel 3 and the gap between the center wheel 3 and the first cam 2 in sequence, the rope passes around the center wheel 3 for half a turn, and the fixed plate 1 is installed on the user's body.

[0038] By establishing a connection between the handle 54 and the third rod 53, the user only needs to simply pull the handle 54 to realize the movement of the third rod 53 in the second sliding groove 15, and then change the gap between the cams through the transmission mechanism to achieve the effect of slow descent. The design of the handle 54 enables the user to more intuitively feel the force change during the slow descent process, so as to adjust the force and speed of pulling the handle 54 according to the needs to achieve more precise slow descent control.

[0039] The way of passing the rope is optimized, so that one end is fixed, the other end passes through the gap between the first cam 2 and the center wheel 3 and the gap between the center wheel 3 and the second cam 4 in sequence, and passes around the center wheel 3 for half a turn. This design not only ensures the stability of the rope during the slow descent process, but also improves the utilization efficiency of the rope, avoiding unnecessary friction and loss.

[0040] Further, the handle 54 has a plurality of holding portions 541 arranged in a stepped manner along the length direction of the handle 54. Specifically, the stepped manner means that the holding portions 541 are arranged in sequence along the length direction of the handle 54, and each two adjacent holding portions 541 are staggered along the length direction of the handle 54, specifically, forming a shape as shown in the drawings. Figure 1

[0041] ​The structure of the present application has different holding parts 541 with mechanical differences. The position difference leads to a change in the force arm. Since each holding part 541 has a different position on the handle 54, the distance from the holding part 541 to the rotation shaft, i.e. the force arm, is also different. For example, the holding part 541 closest to the rotation center of the tool has a smaller force arm, and the holding part 541 farthest from the rotation center has a larger force arm.

[0042] The change in the force arm leads to a difference in the moment of force, which is proportional to the size of the force and the length of the force arm. Therefore, under the same force, the holding part 541 with a larger force arm generates a larger moment of force, and the holding part 541 with a smaller force arm generates a smaller moment of force.

[0043] The user can select different holding parts 541 to adjust the applied moment of force as needed, thereby flexibly manipulating the tool. For example, when a larger moment of force is needed, the holding part 541 farthest from the rotation center can be selected; when a smaller moment of force is needed, the holding part 541 closest to the rotation center can be selected.

[0044] Since each holding part 541 has its unique mechanical characteristics, the user can more accurately control the movement of the tool, improving work efficiency.

[0045] By changing the holding position to adjust the applied force, the hand pressure can be effectively dispersed, reducing hand fatigue and prolonging working time.

[0046] Furthermore, the fixed plate 1 has a fixed handle 16 corresponding to the handle 54, and the fixed handle 16 and the handle 54 are connected by a resilient member 17.

[0047] The design of the fixed handle 16 provides a stable support point for the user, who can tightly hold the fixed handle 16 and pull the handle 54 with the other hand, or hold both the handle 54 and the fixed handle 16 with one hand. The fixed handle 16 actually provides another fixed position relative to the handle 54, making it convenient for the user to move the handle 54, thereby maintaining the balance and stability of the body and reducing the risk of accidents caused by improper operation or environmental factors.

[0048] The design of the fixed handle 16 and the handle 54 takes into account the usage needs of different groups of people. Whether it is a strong adult, or a child or an elderly person with less strength, they can all operate the slow descent device by tightly holding the fixed handle 16 and pulling the handle 54. This design makes the slow descent device more widely applicable to a wider range of people, enhancing its versatility and practicality.

[0049] In emergency situations such as high-altitude rescue or escape, the fixed handle 16 provides a reliable grip point for the user, helping to maintain calm and stability, avoiding operational errors caused by panic or nervousness. At the same time, through the coordinated operation of both hands, the user can more effectively control the slow descent speed, ensuring a safe landing.

[0050] The addition of the elastic member 17 provides a cushioning mechanism for the user, effectively reducing the impact force on the hand when pulling the handle 54, improving the comfort of operation. Even after a long time of operation, it can reduce the feeling of hand fatigue and improve the operation efficiency.

[0051] When the user releases the handle 54, the elastic member 17 can push the handle 54 to automatically reset to the initial state, preparing for the next operation. This function not only simplifies the operation process, but also improves the convenience of using the slow descent device.

[0052] The elastic member 17 forms a stable connection between the fixed handle 16 and the handle 54, helping to maintain the stability of the entire operating mechanism. In emergency situations such as high-altitude work or escape, this stability is particularly important, ensuring that the user can stably operate the slow descent device and reducing the risk of accidents.

[0053] The elasticity of the elastic member 17 can be adjusted according to the needs of different users. Whether it is a strong adult, or a child or an elderly person with less strength, the elasticity of the elastic member 17 can be adjusted according to the actual situation of the user to achieve more accurate and comfortable operation.

[0054] The cushioning effect of the elastic member 17 can also reduce the noise and wear generated when pulling the handle 54, prolonging the service life of the slow descent device. This is particularly important for situations where the slow descent device needs to be used frequently, as it can reduce maintenance costs and improve economic efficiency.

[0055] Further, the slow descent device further comprises a rotating pressure plate 6, which rotates around the second rotating shaft 12. The rotating pressure plate 6 is provided with a first recess 61 and a second recess 62. The first rotating shaft 11 and the third rotating shaft 13 are respectively arranged in the first recess 61 and the second recess 62. The rotating pressure plate 6 and the fixed plate 1 are respectively arranged on the two sides of the first cam 2, the center rotating wheel 3 and the second cam 4.

[0056] The addition of the rotating pressure plate 6 in the slow descent device and its rotation around the second rotating shaft 12, as well as the provision of the first recess 61 and the second recess 62 on the rotating pressure plate 6 to accommodate the first rotating shaft 11 and the third rotating shaft 13, and the arrangement of the rotating pressure plate 6 and the fixed plate 1 on the two sides of the first cam 2, the center rotating wheel 3 and the second cam 4, this innovative design brings the following beneficial effects:

[0057] The design of the rotating pressure plate 6 makes it easier to install and remove the first cam 2, the central rotating wheel 3, and the second cam 4. When maintenance or component replacement is required, simply rotating the rotating pressure plate 6 can expose or hide the central rotating shaft and the cams, greatly simplifying the operation process and improving work efficiency.

[0058] The addition of the rotating pressure plate 6 provides convenience for the placement and management of the rope. Users do not need to pass the rope through a complex path or disassemble the device. Simply rotating the rotating pressure plate 6 can expose the central rotating shaft and the cams, place the rope in the gap, and then rotate back to easily achieve the placement of the rope, saving time and simplifying the operation. This is particularly important in emergency situations, allowing for quick completion of rope preparation and improving rescue efficiency.

[0059] As shown in Figure 1 The first safety buckle hole 63 and the second safety buckle hole 64 are provided on the rotating pressure plate 6 and the fixed handle 16, respectively. After the rope is placed in position, lock the first safety buckle hole 63 and the second safety buckle hole 64. At this time, the rotating pressure plate 6 is connected with the fixed plate 1 through the second rotating shaft 12 and the safety buckle hole. After the rope is placed in position and the safety buckle hole is locked, the connection between the rotating pressure plate 6 and the fixed plate 1 is more stable, effectively preventing loosening or falling off due to vibration or external force, thereby ensuring the stability and safety of the slow descent process.

[0060] The connection between the rotating pressure plate 6 and the fixed plate 1 is achieved through the safety buckle hole, greatly simplifying the operation process. Users do not need to perform complex assembly or disassembly work. Simply locking the first safety buckle hole 63 and the second safety buckle hole 64 can improve work efficiency and operational convenience.

[0061] As shown in Figure 1 The profiles of the first cam 2 and the second cam 4 facing the direction of the central rotating wheel 3 are arc-shaped to form the first guide part 21 and the second guide part 41.

[0062] The arc-shaped profile design enables the first guide part 21 and the second guide part 41 to effectively guide the rope to move along a predetermined path. This guiding effect not only ensures the stability and continuity of the rope during the slow descent process, but also avoids the problem of jamming or wear caused by the rope deviating from the track, thereby prolonging the service life of the rope and the entire slow descent device.

[0063] By optimizing the guide path of the rope, the arc-shaped cam profile can reduce the frictional resistance and energy loss of the rope during movement, thereby improving the slow descent efficiency. This means that users can reach the target position faster within the same descent distance, or carry heavier loads within the same descent time.

[0064] The arc-shaped cam profile design helps to keep the rope in tension during the slow descent, so that the longer part of the rope is in close contact with the center runner 3, increasing the friction and preventing accidental falling or out of control due to slack. This design is particularly important in high-risk situations such as emergency rescue or high-altitude work, which can ensure the safety of the user.

[0065] Further, the slow descent device further comprises a distance control device 7 for controlling the gap between the first cam 2 and the center runner 3, and the distance control device 7 is arranged on one side of the first cam 2. The distance control device 7 pushes the first cam 2 to rotate, thereby changing the gap and achieving slow descent.

[0066] Preferably, the distance control device 7 can be any device on the market that can push the first cam 2, such as the band tightening ratchet device in the Chinese invention publication CN1019658B, which can connect the band to the first cam 2. Pressing the handle of the band tightening ratchet device can drive the rotation of the first cam 2 and achieve slow descent.

[0067] The present application solves the problems of single control, insufficient compression device, inability to stop midway, and inconvenient use of the control handle of the existing high-altitude slow descent device.

[0068] In use, the direction of the rope outside the gap is basically the same as the direction of gravity, and the direction of the rope outside the gap is basically along the direction of the gap, so the mounting plate is not flat in the use state. Because people have gravity, the first cam 2 and the second cam 4 will deflect towards the center runner 3, that is, the speed of descent has been slowed down without operating the handle 54.

[0069] The stepped handle 54 is convenient for people with small hands to use, and the distance control device 7 is suitable for people with less strength. During the descent process, the user can choose a control method according to his own preference and strength.

[0070] The present application can accurately control the rotation of the cam and the compression force, avoiding the sudden stop and sudden slack phenomenon of the previous high-altitude slow descent device.

[0071] The embodiments of the present embodiment are preferred embodiments of the present application, but do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A slow descent device, characterized in that, The utility model relates to a kind of rope driving device, including: Fixed plate (1), first rotation shaft (11), second rotation shaft (12) and third rotation shaft (13) are sequentially provided on the fixed plate (1), first sliding groove (14) and second sliding groove (15) are provided on the fixed plate (1); First cam (2), the first cam (2) rotates with the first rotation shaft (11) as center; Center rotating wheel (3), the center rotating wheel (3) rotates with the second rotation shaft (12) as center; Second cam (4), the second cam (4) rotates with the third rotation shaft (13) as center; Driving device (5), first rod (51), second rod (52) and third rod (53) are sequentially connected in the driving device (5), the middle part of the second rod (52) rotates with the second rotation shaft (12) as center, and the first rod (51) and the second rod (52) are slidably arranged in the first sliding groove (14) and the second sliding groove (15) respectively; Wherein, the first cam (2) and the center rotating wheel (3) and the center rotating wheel (3) and the second cam (4) between both have gap for rope to pass through, and the first rod (51) and the second rod (52) are connected with the first cam (2) and the second cam (4) respectively.

2. The controlled descent device of claim 1, wherein, The driving device (5) further includes handle (54), and the handle (54) is connected with the third rod (53).

3. The controlled descent device of claim 2, wherein, The handle (54) has a plurality of holding portions (541), and the plurality of holding portions (541) are arranged in a stepped manner along the length direction of the handle (54).

4. The controlled descent device of claim 2, wherein, The fixed plate (1) has a fixed handle (16), and the fixed handle (16) corresponds to the handle (54).

5. The controlled descent device of claim 4, wherein, The fixed handle (16) and the handle (54) are connected with an elastic member (17).

6. The controlled descent device of claim 4, wherein, Further including rotating pressing plate (6), the rotating pressing plate (6) rotates with the second rotation shaft (12) as shaft, the rotating pressing plate (6) is provided with first recess (61) and second recess (62), and the first rotation shaft (11) and the third rotation shaft (13) are arranged in the first recess (61) and the second recess (62) respectively.

7. The controlled descent device of claim 6, wherein, The rotating pressing plate (6) and the fixed plate (1) are arranged on the two sides of the first cam (2), the center rotating wheel (3) and the second cam (4) respectively.

8. The controlled descent device of claim 6, wherein, The rotating pressing plate (6) and the fixed handle (16) are respectively provided with first safety buckle hole (63) and second safety buckle hole (64) corresponding to each other.

9. The controlled descent apparatus according to claim 1, wherein, The first cam (2) and the second cam (4) are arc-shaped in the direction facing the center rotating wheel (3) to form first guide portion (21) and second guide portion (41).

10. The controlled descent device of claim 1, wherein, Further including distance control device (7) for controlling the gap between the first cam (2) and the center rotating wheel (3), and the distance control device (7) is arranged on one side of the first cam (2).

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