A lifebuoy thrower
By introducing a line-retrieval device into the thrower, high-pressure gas drives the blades to rotate the rod, automatically retrieving the rope. This solves the problem of time-consuming manual retrieval of the thrower's rescue projectile and improves operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIUJIANG HAOCHUAN FIRE FIGHTING EQUIP CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-06-05
AI Technical Summary
The existing throwers require manual rope retraction after the rescue projectile is launched, which is time-consuming and inefficient.
A rescue thrower was designed, which includes a line reeling device connected to the main body of the thrower via an air tube. High-pressure gas is used to drive the blades to rotate the round rod, thereby achieving automatic line reeling.
The automatic retrieval of the rescue projectile from the thrower was achieved, improving operational efficiency and reducing the time spent manually retrieving the rope.
Smart Images

Figure CN224324985U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire-fighting equipment technology, and in particular to a life-saving thrower. Background Technology
[0002] A rescue launcher is a rescue device powered by compressed air that throws ropes and life-saving equipment towards a target. It is primarily used in maritime rescue, fire emergency response, and power line installation, enabling rope connections and material transport in complex scenarios such as water, high altitudes, and cliffs. In use, the rescue projectile is placed inside the launch tube. The rope at the tail of the projectile is then pulled out of the tube and tied to the launcher. Pulling the trigger releases high-pressure gas, generating a powerful thrust that propels the projectile at high speed away from the launch tube, achieving a long-distance throw. After launch, the rescue projectile needs to be retrieved. Currently, this is done manually, which is time-consuming and has limitations. Utility Model Content
[0003] The purpose of this invention is to solve the above-mentioned technical problems by providing a life-saving throwing device.
[0004] The technical solution of this utility model is: a life-saving throwing device, comprising a throwing device body, and further comprising:
[0005] The line take-up device includes a line rod, an air pipe, two round rods and a connecting plate, and several blades. One end of each round rod is located at the end of the line rod, and the other end is rotatably connected to the connecting plate. The connecting plate is detachably connected to the main body of the launcher. The connecting plate is provided with an air inlet pipe, and the air pipe is detachably connected to the launching pipe on the main body of the launcher and the air inlet pipe. Several blades are arranged on one of the round rods.
[0006] Preferably, both ends of the air pipe are provided with threaded tubes.
[0007] Preferably, one of the connecting plates is provided with a cavity, an air outlet and two insertion holes, the cavity communicates with the air outlet and the insertion holes, and the round rod mates with the insertion holes.
[0008] Preferably, one end of one of the round rods is detachably provided with a T-shaped guide rod, and the other round rod is provided with a limiting plate.
[0009] Preferably, one end of the guide rod has an outwardly extending protrusion, which is screwed to the round rod.
[0010] The beneficial effects of this utility model are as follows: In this utility model, by connecting the air pipe to the launching pipe and the air inlet pipe on the main body of the thrower, the high-pressure gas in the main body of the thrower flows into the air pipe through the launching pipe, and then into the air inlet pipe. The air inlet pipe blows the blades to drive the round rod to rotate, which in turn drives the line rod to rotate to achieve the rope winding process. Attached Figure Description
[0011] Figure 1 This is a front view of the overall structure of a preferred embodiment of the present invention;
[0012] Figure 2 This is a side view of the take-up device in a preferred embodiment of the present invention;
[0013] Figure 3 This is a cross-sectional view of the take-up device in a preferred embodiment of the present invention;
[0014] Figure 4 This is a cross-sectional view of one of the connecting plates in a preferred embodiment of this utility model.
[0015] Reference numerals: 10 for the throwing device body, 2 for the line rod, 3 for the air pipe, 301 for the threaded pipe, 4 for the round rod, 401 for the guide rod, 402 for the limiting plate, 5 for the connecting plate, 501 for the air inlet pipe, 502 for the cavity, 503 for the air outlet, 504 for the insertion hole, and 6 for the blade. Detailed Implementation
[0016] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Reference Figures 1 to 4 A life-saving throwing device, comprising a throwing device body 10, and further comprising:
[0018] The line take-up device includes a line rod 2, an air pipe 3, two round rods 4, a connecting plate 5, and several blades 6. One end of the round rod 4 is located at the end of the line rod 2, and the other end is rotatably connected to the connecting plate 5. The connecting plate 5 is detachably connected to the main body 10 of the launcher. The connecting plate 5 is provided with an air inlet pipe 501. The air pipe 3 is detachably connected to the launching pipe on the main body 10 of the launcher and the air inlet pipe 501. Several blades 6 are arranged on one of the round rods 4. In this invention, during use, one end of the rescue projectile is first placed inside the launch tube, and the rope end of the projectile is taken out of the launch tube and tied to the line pole 2. The high-pressure gas inside the thrower body 10 flows into the launch tube to launch the rescue projectile. When it is necessary to retrieve the rescue projectile, the air pipe 3 is connected to the launch tube and the air inlet pipe 501 on the thrower body 10. The high-pressure gas from the thrower body 10 flows through the launch tube into the air pipe 3, and then through the air pipe 3 into the air inlet pipe 501. The air inlet pipe 501 blows the blade 6, causing the round rod 4 to rotate, which in turn causes the line pole 2 to rotate, thus achieving rope retrieval. Specifically, the structure of the thrower body 10 and the principle of launching the rescue projectile are existing technologies, and the thrower body 10 is not an improvement point of this application, so it will not be described further here; the connecting plate 5 is connected to the thrower body 10 by bolts.
[0019] As a preferred embodiment of this utility model, it may also have the following additional technical features:
[0020] In this embodiment, both ends of the air pipe 3 are provided with threaded pipes 301. Specifically, the launching pipe on the main body 10 of the launcher is threaded, and the air inlet pipe 501 is threaded. The threaded pipe 301 is screwed to the launching pipe and the air inlet pipe 501 for easy installation and disassembly; one end of the air inlet pipe 501 extends into the connecting plate 5.
[0021] In this embodiment, one of the connecting plates 5 is provided with a cavity 502, an air outlet 503, and two insertion holes 504. The cavity 502 communicates with the air outlet 503 and the insertion holes 504. The round rod 4 cooperates with the insertion holes 504. One of the round rods 4 rotates within the cavity 502 to drive the blade 6, which serves a protective function. The gas blown out by the air inlet pipe 501 is discharged from the air outlet 503. Specifically, there are multiple air outlets 503.
[0022] In this embodiment, one of the round rods 4 is detachably provided with a T-shaped guide rod 401 at one end, and the other round rod 4 is provided with a limiting plate 402. The two connecting plates 5 are respectively fixed to one side of the thrower body 10. After the line rod 2 has finished reeling in the line, the left connecting plate 5 is removed from the thrower body 10 and moved back and forth to the left and right to make the line rod 2 move back and forth, changing the position of the rope on the line rod 2 and preventing the rope from getting wrapped around the line rod 2. When the rope has finished reeling in the line, the guide rod 401 is removed, the right round rod 4 is detached from the right connecting plate 5, and the rope wrapped around the line rod 2 is pushed to the right to detach the wrapped rope from the line rod 2.
[0023] In this embodiment, one end of the guide rod 401 has an outwardly extending protrusion, which is screwed to the round rod 4. The guide rod 401 can be installed and removed from the round rod 4 by rotating it. Specifically, one end of one of the round rods 4 has a threaded hole.
[0024] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A life-saving thrower, comprising a thrower body (10), characterized in that, Also includes: The line take-up device includes a line rod (2), an air pipe (3), two round rods (4) and a connecting plate (5), and several blades (6). One end of the round rod (4) is located at the end of the line rod (2), and the other end is rotatably connected to the connecting plate (5). The connecting plate (5) is detachably connected to the main body (10) of the thrower. An air inlet pipe (501) is provided on the connecting plate (5). The air pipe (3) is detachably connected to the launching tube on the main body (10) of the thrower and the air inlet pipe (501). Several blades (6) are arranged on one of the round rods (4).
2. The life-saving thrower according to claim 1, characterized in that: Both ends of the air pipe (3) are provided with threaded pipes (301).
3. A life-saving thrower according to claim 1, characterized in that: One of the connecting plates (5) is provided with a cavity (502), an air outlet (503) and two insertion holes (504). The cavity (502) communicates with the air outlet (503) and the insertion holes (504), and the round rod (4) cooperates with the insertion holes (504).
4. A life-saving thrower according to claim 3, characterized in that: One of the round rods (4) has a T-shaped guide rod (401) detachably provided at one end, and the other round rod (4) has a limiting plate (402).
5. A life-saving throwing device according to claim 4, characterized in that: One end of the guide rod (401) is provided with an outwardly extending protrusion, which is screwed to the round rod (4).