External storage and throwing device for helicopter life raft and helicopter life raft

Through the external storage and delivery device of the helicopter life raft, the three-ring release mechanism and multiple sets of fixed modules are adopted, which solves the impact of the existing device on the life raft and the complex mechanical structure problems of the life raft, and achieves rapid and safe delivery of the life raft.

CN223302862UActive Publication Date: 2025-09-05CHINA HELICOPTER RES & DEV INST
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Patent Information

Application Number
CN202422367062.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-09-05
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

The existing helicopter life raft drop devices are prone to impact and damage to the life raft during the release process, or require complex mechanical structures and high pressure requirements, and are difficult to operate and maintain.

Method used

The external storage and delivery device of the helicopter life raft is adopted, including a storage box, a fixed module and a release mechanism. The three-ring release mechanism and multiple sets of fixed modules are combined with the release module to achieve rapid fixing and stable opening of the life raft.

Benefits of technology

The rapid release of life rafts is achieved, which avoids damage during the release process, simplifies the operation process, and improves the safety and ease of use of the device.

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Abstract

The utility model discloses an external storage and release device for a helicopter life raft and the helicopter life raft, in the device, the life raft is stored and placed through a storage box body, and the storage box body in which the life raft is stored is integrally arranged at the bottom of a helicopter belly; the storage box body is fixedly mounted below the belly of the helicopter through a front bandage locking assembly, a bandage, a three-ring release mechanism and a rear bandage locking assembly of the fixing module; the three rings of the three-ring releasing mechanism are sequentially connected with the ring holes of the rear bandage locking assembly in a sleeved mode, through linkage sleeving of the releasing mechanism and the rear bandage locking assembly, the sleeving structure of the rear bandage locking assembly and the three-ring releasing mechanism is quickly released by releasing the releasing mechanism, and therefore the storage box is separated from the fixing module. The life raft throwing device solves the problems that an existing life raft throwing device cannot achieve safe throwing of life rafts and is simple in throwing structure and easy to operate.
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Description

Technical Field

[0001] The utility model relates to, but is not limited to, the technical field of helicopter special equipment, and in particular to an external storage and launching device for a helicopter life raft and a helicopter life raft. Background Art

[0002] A life raft is an emergency rescue device used to ensure the evacuation of personnel from a helicopter after it makes an emergency landing on water, providing shelter for the personnel on board while they wait for rescue.

[0003] There are mainly the following types of existing life raft launching devices: 1. Slide-type launching device, which is easy to operate and maintain, but in order to adapt to the sliding process, the corresponding installation structure needs to be modified, which increases the complexity of design and installation, and may cause impact and damage to the life raft during the sliding process; 2. Catapult-type launching device, which can quickly launch the life raft into the water, and the launch is fast and efficient, but it requires a complex mechanical structure and high pressure requirements, and is relatively difficult to operate and maintain. In addition, the safety requirements of this type of device itself are relatively high.

[0004] Obviously, the above-mentioned existing life raft launching devices may cause impact and damage to the life raft during the launching process, or require complex mechanical structures and high pressure requirements, and are relatively difficult to operate and maintain. Utility Model Content

[0005] The purpose of the present invention is to solve the above problems. The embodiments of the present invention provide a helicopter life raft external storage and delivery device and a helicopter life raft, so as to solve the problem that the existing life raft delivery device is difficult to achieve both safe delivery of the life raft and a simple delivery structure and easy operation.

[0006] Technical solution of the present invention: The embodiment of the present invention provides an external storage and deployment device for a helicopter life raft, comprising: a storage box 100, at least two sets of fixed modules 200, and a release mechanism 300 used in conjunction with the fixed modules 200;

[0007] The storage box 100 is used to store the life raft, and the storage box 100 containing the life raft is placed as a whole at the bottom of the helicopter belly;

[0008] Each set of the fixing module 200 includes: a front strap locking assembly 210, a rear strap locking assembly 220, a three-ring release mechanism 230 and a strap 240; the front end of the strap 240 is fixedly connected to the front strap locking assembly 210, and the rear end is connected to the three-ring release mechanism 230 and the rear strap locking assembly 220, and the front strap locking assembly 210 is fixedly mounted on one side of the helicopter belly, and the three-ring release mechanism 230 is fixedly mounted on the other side of the helicopter belly;

[0009] The storage box 100 is fixedly mounted under the belly of the helicopter by means of the front strap locking assembly 210, the strap 240, the three-ring release mechanism 230 and the rear strap locking assembly 220 of the fixing module 200;

[0010] The three rings of the three-ring release mechanism 230 are sequentially connected with the ring holes of the rear strap locking assembly 220, and through the linkage arrangement of the release mechanism 300 and the rear strap locking assembly 220, the connection structure between the rear strap locking assembly 220 and the three-ring release mechanism 230 is quickly released by releasing the release mechanism 300, thereby allowing the storage box 100 to be detached from the fixed module 200.

[0011] Optionally, in the helicopter life raft external storage and deployment device as described above, the front strap locking assembly 210 includes: a front fixing component 211, a front fixing bolt 212 and a front fixing nut 213;

[0012] The front fixing component 211 of the front strap locking assembly 210 is fixedly mounted on one end surface of the storage box 100 by means of a front bolt 212 and a front nut 213 .

[0013] Optionally, in the helicopter life raft external storage and deployment device as described above, the rear strap locking assembly 220 includes: a rear fixing component 221, a rear bolt 222, a rear nut 223, a three-ring mechanism rope 224, a first ring connecting hole 225, a second ring connecting hole 226 and a rope hole 227;

[0014] Among them, the rear fixing component 221 of the rear strap locking assembly 220 is fixedly installed on the other side end face of the storage box body 100 through the rear bolt 222 and the rear nut 223, and is connected to the three-ring release mechanism 230 through the three-ring mechanism rope 224, the first ring connecting hole 225, and the second ring connecting hole 226.

[0015] Optionally, in the helicopter life raft external storage and deployment device as described above, the three-ring release mechanism 230 is composed of a first ring 231, a second ring 232 and a third ring 233;

[0016] The first ring 231 of the three-ring release mechanism 230 passes through the first ring connecting hole 225, the second ring 232 passes through the second ring connecting hole 226, and is hooked on the hook structure formed by the first ring connecting hole 225 and the first ring 231. The third ring 233 passes through the connecting hole of the strap 240 and is hooked on the hook structure formed by the second ring connecting hole 226 and the second ring 232, thereby forming a three-ring structure that is interconnected.

[0017] After the three-ring mechanism rope 224 passes through the first ring 231 and the rope hole 227 , a release linkage hole 224 a is formed on the other side of the rear fixing component 221 by the three-ring mechanism rope 224 .

[0018] Optionally, in the above-mentioned helicopter life raft external storage and deployment device, the release mechanism 300 includes: a release cable 301, and two sets of release components arranged in a one-to-one correspondence with the fixed module 200;

[0019] Each set of release components includes: a safety pin 302, a release fixing component 303, a fixing clip 304 and a rivet 305;

[0020] The release fixing member 303 is configured as a U-shaped plate as a whole, with a through hole opened at the bottom end of the plate. The release linkage hole 224a formed by the three-ring mechanism rope 224 passes through the through hole opened at the bottom end of the plate, and the release fixing member 303 is engaged with the sleeve release cable 301 through the U-shaped open end;

[0021] The safety pin 302 is configured as a rod-shaped structure with a hook at one end, and its hook end is fixedly mounted on the release steel cable 301. The rod end passes through the through holes on both sides of the release and fixing component 303 and the release linkage hole 224a of the internal three-ring mechanism rope 224, and the protruding end is fixed to the release and fixing component 303 through a fixing clip 304 and a rivet 305.

[0022] Optionally, the helicopter life raft as described above is stored and deployed externally.

[0023] The helicopter life raft external storage and deployment device drives each safety pin 302 to be pulled out from the corresponding installed release fixing component 303 and the release linkage hole 224a of the three-ring mechanism rope 224 and the fixing clamp 304 by pulling the release steel cable 301 of the release mechanism 300, thereby releasing the lock of the three-ring mechanism rope 224 on the first ring 231, so that the first ring 231, the second ring 232 and the third ring 233 of the three-ring release mechanism 230 are released in sequence, thereby completely releasing the rear strap locking assembly 220 and the three-ring release mechanism 230 in the fixed module 200.

[0024] The present invention also provides a helicopter life raft, comprising: a life raft body, and an external storage and delivery device for the helicopter life raft as described above for storing and delivering the life raft body;

[0025] The life raft bodies are stacked and stored in a storage box 100. The storage box 100 is placed as a whole at the bottom of the helicopter's belly and is mounted under the helicopter's belly using the front strap locking assembly 210, rear strap locking assembly 220, three-ring release mechanism 230, and straps 240 of the fixed module 200.

[0026] The three rings of the three-ring release mechanism 230 are sequentially connected with the ring holes of the rear strap locking assembly 220, and through the linkage arrangement of the release mechanism 300 and the rear strap locking assembly 220, the connection structure between the rear strap locking assembly 220 and the three-ring release mechanism 230 is quickly released by releasing the release mechanism 300, thereby allowing the storage box 100 to be detached from the fixed module 200.

[0027] The beneficial effects of the present invention are as follows: the embodiment of the present invention provides an external storage and deployment device for a helicopter life raft and a helicopter life raft, and adopts a three-ring release mechanism 230 to ensure that the life raft is not easily opened during storage, and can also ensure that the life raft can be quickly opened when the release cable is pulled; adopting multiple sets of fixing modules 200 in conjunction with multiple sets of release components of the release mechanism 300 can realize fast fixation of the life raft in the storage device, and the operation is simple; in the release mechanism 300, through the linkage form of one release cable 301 and multiple sets of release components, when the release cable is pulled, each release component can be opened at the same time, ensuring that the life raft can be opened quickly and stably; the front strap locking component 210 and the rear strap locking component 220 can adjust the tightening length and locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0029] Figure 1 A schematic diagram of the overall structure of an external storage and launching device for a helicopter life raft provided in an embodiment of the present utility model;

[0030] Figure 2 FIG. 1 is a schematic diagram showing the installation position of the helicopter life raft external storage and deployment device on the helicopter;

[0031] Figure 3 A schematic structural diagram of a set of fixed modules in an external storage and delivery device for a helicopter life raft provided in an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A schematic structural diagram of the front strap locking assembly in the fixed module provided in the illustrated embodiment;

[0033] Figure 5 for Figure 3 A schematic structural diagram of the rear strap locking assembly in the fixed module provided by the illustrated embodiment;

[0034] Figure 6 for Figure 3A schematic structural diagram of a three-ring release mechanism in a fixed module provided in the illustrated embodiment;

[0035] Figure 7 A schematic diagram of the structure of the release mechanism of the external storage and delivery device for a helicopter life raft provided in an embodiment of the present utility model;

[0036] Figure 8 for Figure 7 The illustrated embodiment provides a schematic structural diagram of a release cable and a safety pin in a release mechanism. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other in any way.

[0038] The above background technology has already explained the importance of life rafts as emergency rescue equipment, as well as the conventional structural forms of existing life raft launching devices. In addition, existing life raft launching devices may either cause impact and damage to the life raft during the launching process, or require complex mechanical structures and high pressure requirements, making operation and maintenance relatively difficult.

[0039] In view of the problem that the existing life raft launching device is difficult to achieve both safe launch of the life raft and simple launch structure and easy operation, the embodiment of the utility model provides a helicopter life raft external storage and launch device and a helicopter life raft. The use of the life raft external storage and launch device can solve the problem of rapid launch of the life raft, avoid damage to the life raft during the launch process, and improve the safety of the launch device and the life raft.

[0040] The present invention provides the following specific embodiments that can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0041] An embodiment of the present invention provides an external storage and deployment device for a helicopter life raft, which provides hardware facilities for on-board storage and deployment of external equipment such as a life raft, ensures that the life raft remains stable during helicopter flight, and can be quickly deployed and released from the helicopter after an emergency landing on water. Figure 1 This is a schematic diagram of the structure of an external storage and deployment device for a helicopter life raft provided by an embodiment of the present invention. The external storage and deployment device for a helicopter life raft provided by an embodiment of the present invention comprises a storage box 100, at least two sets of fixed modules 200, and a release mechanism 300 used in conjunction with the fixed modules 200.

[0042] like Figure 2The figure shows the installation position of the helicopter life raft external storage and deployment device on the helicopter. The specific structure of the device is as follows:

[0043] like Figure 1 As described above, the helicopter life raft external storage and deployment device provided in this embodiment mainly consists of a storage box 100, three fixed modules 200 and three release mechanisms 300. The overall structure of the device is connected to the upper part of the helicopter foot pedal, the side is connected to the fairing, and the other parts are external, such as Figure 2 shown.

[0044] The fixing module 200 in this embodiment is composed of a front strap locking assembly 210, a rear strap locking assembly 220, a three-ring release mechanism 230 and a strap 240. Figure 3 As shown, the front end of the strap 240 is fixedly connected to the front strap locking assembly 210, and the rear end is connected to the three-ring release mechanism 230 and the rear strap locking assembly 220, and the front strap locking assembly 210 is fixedly installed on one side of the helicopter belly, and the three-ring release mechanism 230 is fixedly installed on the other side of the helicopter belly; the connection between the rear strap locking assembly 220 and the strap 240 can be quickly released through the three-ring release mechanism 230, so that the storage box 100 is detached from the fixed module 200.

[0045] Figure 3 This is a structural diagram of a set of fixed modules in the external storage and delivery device for a helicopter life raft provided by an embodiment of the present invention. Figure 4 for Figure 3 The embodiment shown is a schematic diagram of the structure of the front strap locking assembly in the fixed module. Figure 3 and Figure 4 As shown, the front strap locking assembly 210 consists of a front fixing component 211, a front bolt 212 and a front nut 213; the front fixing component 211 of the front strap locking assembly 210 is fixedly mounted on one side end face of the storage box 100 by the front bolt 212 and the front nut 213.

[0046] Figure 5 for Figure 3 The embodiment shown is a schematic diagram of the structure of the rear strap locking assembly in the fixed module. Figure 3 and Figure 5 As shown, the rear strap locking assembly 220 consists of a rear fixing component 221, a rear bolt 222, a rear nut 223, a three-ring mechanism rope 224, a first ring connecting hole 225, and a second ring connecting hole 226; wherein, the rear fixing component 221 of the rear strap locking assembly 220 is fixedly installed on the other side end face of the storage box body 100 by the rear bolt 222 and the rear nut 223.

[0047] Figure 6 for Figure 3 The embodiment shown is a schematic diagram of the structure of the three-ring release mechanism in the fixed module. Figure 3 and Figure 6 As shown, the three-ring release mechanism 230 is composed of a first ring 231 , a second ring 232 and a third ring 233 .

[0048] refer to Figures 3 to 6 As shown, the three-ring release mechanism 230 is an integral structure used in conjunction with the rear strap locking assembly 220. The first ring 231 in the three-ring release mechanism 230 passes through the first ring connecting hole 225, the second ring 232 passes through the second ring connecting hole 226, and is hung on the hook structure formed by the first ring connecting hole 225 and the first ring 231. The third ring 233 passes through the connecting hole of the strap 240 and is sleeved on the hook structure formed by the second ring connecting hole 226 and the second ring 232, thereby forming a three-ring structure that is interconnected. In addition, after the three-ring mechanism rope 224 passes through the first ring 231 and the rope hole 227, a release linkage hole 224a is formed by the three-ring mechanism rope 224 on the other side of the rear fixing component 221.

[0049] Figure 7 This is a schematic diagram of the structure of the release mechanism in the external storage and delivery device for a helicopter life raft provided by an embodiment of the utility model. Figure 8 for Figure 7 The embodiment shown is a schematic diagram of the structure of the release cable and the safety pin in the release mechanism. Figure 2 、 Figure 7 and Figure 8 As shown, the release mechanism 300 in this embodiment is composed of a release cable 301 , a safety pin 302 , a release fixing component 303 , a fixing clip 304 and two rivets 305 .

[0050] The structural composition of the above-mentioned release mechanism 300 corresponds to the rear strap locking assembly 220 in the fixed module 200. In addition to using one set of release cables 301, the other components have three sets, among which the three safety pins 302 are set and fixed on the release cables 301.

[0051] like Figure 7 As shown, one set of installation structures is as follows: the release fixing component 303 is configured as a U-shaped plate as a whole, a through hole is opened at the bottom end of the plate, the release linkage hole 224a formed by the three-ring mechanism rope 224 passes through the through hole opened at the bottom end of the plate, and the release fixing component 303 is engaged on the sleeve release cable 301 through the U-shaped open end.

[0052] like Figure 7As shown, the safety pin 302 is configured as a rod-shaped structure with a hook at one end, and its hook end is fixedly sleeved on the release steel cable 301. The rod end passes through the through holes on both sides of the release fixing component 303 and the release linkage hole 224a of the internal three-ring mechanism rope 224, and the protruding end is fixed by a fixing clamp 304 and two rivets 305.

[0053] The use of the external storage and launching device for a helicopter life raft provided by the embodiment of the utility model is as follows:

[0054] When storing the life raft, it is stacked within the storage box 100, which is then placed entirely on the bottom of the helicopter's belly. The storage box 100 is mounted on the bottom of the helicopter's belly using the front strap locking assembly 210, rear strap locking assembly 220, three-ring release mechanism 230, and straps 240 of the fixed module 200. Furthermore, the tightness of the straps 240 in the rear strap locking assembly 220 can be adjusted using the front fixing member 211 and rear fixing member 221. The hooked end of the safety pin 302 in the release mechanism 300 is integrally fastened to the release cable 301. The rod end of the safety pin 302 passes through the release linkage hole 224a of the release fixing member 303 and the three-ring mechanism rope 224, and the distal end is secured to the release fixing member 303 via a fixing clip 304.

[0055] When the life raft is deployed, the release cable 301 is pulled to drive the three safety pins 302 to be pulled out from the corresponding release fixing component 303 and the release linkage hole 224a of the three-ring mechanism rope 224 and the fixing clamp 304. After the three-ring mechanism rope 224 is released by pulling out the safety pin 302, the first ring 231 of the three-ring release mechanism 230 is released, thereby releasing the second ring 232 of the three-ring release mechanism 230, and finally releasing the third ring 233, and then releasing the strap 240. In the above process, the release mechanism 300 is fully opened, so that the rear strap locking assembly 220 and the three-ring release mechanism 230 in the fixed module 200 are completely released, that is, the life raft is deployed. The helicopter life raft external storage and delivery device provided by the embodiment of the present invention adopts a three-ring release mechanism 230 to ensure that the life raft is not easily opened when stored, and can also ensure that the life raft can be quickly opened when the release cable is pulled; multiple sets of fixing modules 200 are used in conjunction with multiple sets of release components of the release mechanism 300, so that the life raft can be quickly fixed in the storage device, and the operation is simple; the release mechanism 300 is linked by a release cable (301) and multiple sets of release components, so that when the release cable is pulled, each release component can be opened at the same time, ensuring that the life raft is quickly and stably opened; the front strap locking component 210 and the rear strap locking component 220 can adjust the tightening length and lock.

[0056] Based on the external storage and launching device of the helicopter life raft provided in the above embodiment of the utility model, the embodiment of the utility model further provides a helicopter life raft, such as Figure 2 As shown, the helicopter life raft comprises a life raft body and an external storage and launching device for the helicopter life raft for storing and launching the life raft body.

[0057] Reference Figures 1 to 8 As shown, the life raft bodies are stacked and stored in a storage box 100, which is placed as a whole at the bottom of the helicopter's belly, and is installed under the helicopter's belly through the front strap locking assembly 210, the rear strap locking assembly 220, the three-ring release mechanism 230 and the strap 240 of the fixed module 200.

[0058] The three rings of the three-ring release mechanism 230 are sequentially connected with the ring holes of the rear strap locking assembly 220, and through the linkage arrangement of the release mechanism 300 and the rear strap locking assembly 220, the connection structure between the rear strap locking assembly 220 and the three-ring release mechanism 230 is quickly released by releasing the release mechanism 300, thereby allowing the storage box 100 to be detached from the fixed module 200.

[0059] Although the embodiments disclosed in the present invention are as described above, the contents are merely embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art to which the present invention belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention. However, the scope of patent protection of the present invention shall still be based on the scope defined by the appended claims.

Claims

1. An external storage and launching device for a helicopter life raft, characterized in that: include: A storage box (100), at least two sets of fixed modules (200), and a release mechanism (300) used in conjunction with the fixed modules (200); The storage box (100) is used to store a life raft, and the storage box (100) storing the life raft is placed as a whole at the bottom of the helicopter belly; Each set of the fixing module (200) comprises: a front strap locking assembly (210), a rear strap locking assembly (220), a three-ring release mechanism (230) and a strap (240); the front end of the strap (240) is fixedly connected to the front strap locking assembly (210), and the rear end is connected to the three-ring release mechanism (230) and the rear strap locking assembly (220); the front strap locking assembly (210) is fixedly mounted on one side of the helicopter belly, and the three-ring release mechanism (230) is fixedly mounted on the other side of the helicopter belly; The storage box (100) is fixedly mounted under the belly of the helicopter via the front strap locking assembly (210), the strap (240), the three-ring release mechanism (230), and the rear strap locking assembly (220) of the fixing module (200); The three rings of the three-ring release mechanism (230) are sequentially sleeved with the ring holes of the rear strap locking assembly (220), and the release mechanism (300) and the rear strap locking assembly (220) are linked together. By releasing the release mechanism (300), the sleeved structure of the rear strap locking assembly (220) and the three-ring release mechanism (230) is quickly released, thereby allowing the storage box (100) to be detached from the fixed module (200).

2. The helicopter life raft external storage and launching device according to claim 1, characterized in that: The front strap locking assembly (210) comprises: a front fixing component (211), a front fixing bolt (212) and a front fixing nut (213); The front fixing component (211) of the front strap locking assembly (210) is fixedly mounted on one side end surface of the storage box (100) via a front bolt (212) and a front nut (213).

3. The helicopter life raft external storage and launching device according to claim 1, characterized in that: The rear strap locking assembly (220) comprises: a rear fixing component (221), a rear bolt (222), a rear nut (223), a three-ring mechanism rope (224), a first ring connecting hole (225), a second ring connecting hole (226), and a rope hole (227); The rear fixing component (221) of the rear strap locking assembly (220) is fixedly mounted on the other end face of the storage box (100) via a rear bolt (222) and a rear nut (223), and is connected to the three-ring release mechanism (230) via a three-ring mechanism rope (224), a first ring connection hole (225), and a second ring connection hole (226).

4. The helicopter life raft external storage and launching device according to claim 3, characterized in that: The three-ring release mechanism (230) consists of a first ring (231), a second ring (232) and a third ring (233); The first ring (231) of the three-ring release mechanism (230) passes through the first ring connecting hole (225), the second ring (232) passes through the second ring connecting hole (226), and is hung on the hook structure formed by the first ring connecting hole (225) and the first ring (231), and the third ring (233) passes through the connecting hole of the strap (240) and is hung on the hook structure formed by the second ring connecting hole (226) and the second ring (232), thereby forming a three-ring structure that is connected to each other; After the three-ring mechanism rope (224) passes through the first ring (231) and the rope hole (227), a release linkage hole (224a) is formed on the other side of the rear fixing component (221) by the three-ring mechanism rope (224).

5. The helicopter life raft external storage and launching device according to claim 4, characterized in that: The release mechanism (300) comprises: a release steel cable (301), and two sets of release components arranged in a one-to-one correspondence with the fixed modules (200); Each set of release components includes: a safety pin (302), a release fixing component (303), a fixing clip (304) and a rivet (305); The release fixing component (303) is configured as a U-shaped plate as a whole, with a through hole provided at the bottom end of the plate, a release linkage hole (224a) formed by the three-ring mechanism rope (224) passes through the through hole provided at the bottom end of the plate, and the release fixing component (303) is engaged with the sleeve release cable (301) through the U-shaped open end; The safety pin (302) is configured as a rod-shaped structure with a hook at one end, the hook end of which is fixedly sleeved on the release steel cable (301), the rod end passes through the through holes on both sides of the release fixing component (303) and the release linkage hole (224a) of the internal three-ring mechanism rope (224), and the protruding end is fixed to the release fixing component (303) through a fixing clip (304) and a rivet (305).

6. The helicopter life raft external storage and launching device according to claim 5, characterized in that: The helicopter life raft external storage and deployment device drives each safety pin (302) to be pulled out from the corresponding release fixing component (303) and the release linkage hole (224a) of the three-ring mechanism rope ((224a)) and the fixing clamp (304) by pulling the release steel cable (301) of the release mechanism (300), thereby releasing the locking of the first ring (231) by the three-ring mechanism rope (224), so that the first ring (231), the second ring (232) and the third ring (233) of the three-ring release mechanism (230) are released in sequence, thereby completely releasing the rear strap locking assembly (220) and the three-ring release mechanism (230) in the fixed module (200).

7. A helicopter life raft, characterized in that: include: A life raft body, and a helicopter life raft external storage and deployment device according to any one of claims 1 to 6 for storing and deploying the life raft body; The life raft bodies are stacked and stored in a storage box (100), the storage box (100) is placed as a whole at the bottom of the helicopter's belly, and the storage box (100) is installed under the helicopter's belly through the front strap locking assembly (210), the rear strap locking assembly (220), the three-ring release mechanism (230) and the strap (240) of the fixed module (200); The three rings of the three-ring release mechanism (230) are sequentially sleeved with the ring holes of the rear strap locking assembly (220), and the release mechanism (300) and the rear strap locking assembly (220) are linked together. By releasing the release mechanism (300), the sleeved structure of the rear strap locking assembly (220) and the three-ring release mechanism (230) is quickly released, thereby allowing the storage box (100) to be detached from the fixed module (200).