Air-drop high-pressure gas cylinder water entry self-starting device

Abstract

The utility model discloses an air-drop high-pressure gas cylinder water entry self-starting device which comprises a shell, a firing pin, a sprint spring, a limiting ball, a starting piece, a starting spring and a starting rod are arranged in the shell, the firing pin is installed in a sliding mode, the tip of the firing pin points to a diaphragm, the sprint spring is compressed, one end of the sprint spring is limited, the other end of the sprint spring abuts against the tail end of the firing pin, and the firing pin is clamped by the limiting ball at the beginning. Bosses are distributed on the outer edge of the starting piece and inserted into corresponding inserting holes in the inner wall of the shell, one face of the starting piece is an outward exposed face, the other face of the starting piece is a pressed face, the starting spring is compressed, one end of the starting spring is limited, the other end of the starting spring abuts against the pressed face, one end of the starting rod is fixed to the pressed face, and the other end of the starting rod makes contact with the limiting ball for limiting. When entering water, impact acts on the exposed face to enable the boss to be disconnected, the starting spring bounces the starting piece and the starting rod away, after the starting rod leaves the limiting ball, the limiting ball restores to be free, limitation of the firing pin is relieved, and the sprint spring drives the tip of the firing pin to pierce the diaphragm. The device not only can realize self-starting, but also can avoid accidental inflation.

Description

Technical Field

[0001] The utility model relates to airdrop rescue, in particular to a water-entering self-starting device for a high-pressure gas cylinder used for airdrop. Background Art

[0002] At present, during the water airdrop rescue process, the inflatable life raft thrown into the water needs to be manually pulled to start the device, so that the high-pressure gas cylinder can inflate the life raft. This manual pulling and starting device is not only cumbersome to operate, but also in a packaged state after being thrown into the water, which is not easy to be discovered and can easily delay the rescue time. Utility Model Content

[0003] The purpose of the utility model is to provide a self-starting device for airdropping a high-pressure gas cylinder into water, which uses the impact of entering water as a starting condition, can realize self-starting, simplify the operation of the life raft, shorten the rescue time, and avoid accidental inflation.

[0004] The technical solution adopted in this utility model is:

[0005] The cam is mounted on a cylinder having a plurality of cylinders, and the cylinder is mounted on a cylinder with a plurality of cylinders connected thereto. The cam is mounted on a cylinder with a plurality of cylinders connected thereto. The cam is mounted on a cylinder with a plurality of cylinders connected thereto. The cam is mounted on a cylinder with a plurality of cylinders connected thereto. The cam is mounted on a cylinder with a plurality of cylinders connected thereto.

[0006] Preferably, a notch is provided on the outward side of the boss.

[0007] Preferably, a second notch is provided at the portion on both sides of the boss connected to the outer edge of the starting piece.

[0008] Preferably, a protruding slot is provided on the inward side of the boss, and a latch is inserted into the slot.

[0009] Preferably, the boss has an axial movable gap in the insertion hole.

[0010] Preferably, the limiting ball is installed in the mounting hole of the striker without falling out, one end of the starting rod is fixed on the pressure surface, and the other end extends into the striker to contact and limit the position with the limiting ball. Initially, the limiting ball is partially located outside the mounting hole to hold the striker in place. After the starting rod leaves the limiting ball, the limiting ball returns to a free fall into the mounting hole and no longer holds the striker.

[0011] Preferably, a sliding sleeve and a limiting cylinder are installed in the shell through multiple internal steps, the firing pin slides through the sliding sleeve and the tail end is located in the limiting cylinder, the part of the limiting ball initially located outside the mounting hole abuts against the sliding sleeve to prevent the firing pin from sliding, the starting rod extends into the limiting cylinder, the sprint spring is installed in the limiting cylinder and is sleeved on the starting rod, the starting spring is sleeved on the limiting cylinder and the limiting abuts against the outside of the limiting cylinder.

[0012] Preferably, an intermediate channel and a gas channel are provided on the shell. The intermediate channel is for the striker to pass through and is connected to the bottle mouth of the high-pressure gas cylinder. The inlet end of the gas channel is connected to the intermediate channel and the outlet end is located on the outer surface of the shell. The outlet end of the gas channel can be installed with a gas outlet nozzle or blocked.

[0013] The beneficial effects of the utility model are:

[0014] Under normal circumstances, even if there is vibration and inertia during the transportation and installation process, it is not enough to overcome the force of the starting spring, so the device can remain in a locked state. Only when it enters the water after airdrop, the instantaneous impact force generated acts on the exposed surface, which is sufficient to overcome the force of the starting spring, causing the boss to break, and then drive the firing pin tip to pierce the diaphragm. The device uses the impact of entering the water as a starting condition, which can not only achieve self-starting, simplify the operation of the life raft, shorten the rescue time, but also avoid accidental inflation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the installation of a self-starting device for high-pressure gas cylinders entering water for airdrop.

[0016] Figure 2 It is a structural diagram of a self-starting device for high-pressure gas cylinders entering water for airdrop.

[0017] Figure 3 This is a schematic diagram of the installation of the starter piece.

[0018] Figure 4 This is a schematic diagram of the startup piece.

[0019] In the figure: 1-high-pressure gas cylinder, 2-middle channel, 3-diaphragm, 4-blockage, 5-striker, 6-slide, 7-limiting ball, 8-starting spring, 9-starting plate, 10-housing, 11-limiting cylinder, 12-sprint spring, 13-gas channel, 14-air outlet nozzle, 15-slot, 16-latch, 17-boss, 18-notch 1, 19-notch 2, 20-jack, 21-starting rod. DETAILED DESCRIPTION

[0020] The present application will be further described below with reference to the accompanying drawings and examples.

[0021] This application discloses a self-starting device for airdropping a high-pressure gas cylinder into water, such as Figure 1 and Figure 2 As shown, it is used to be installed on the bottle mouth of the high-pressure gas cylinder 1 and puncture the diaphragm 3 in the bottle mouth under the impact of water to achieve self-starting; Figures 1 to 4 As shown: It includes a shell 10 for installation on the bottle mouth of the high-pressure gas cylinder 1, and a firing pin 5, a sprint spring 12, a limiting ball 7, a starting piece 9, a starting spring 8 and a starting rod 21 are arranged in the shell 10. The firing pin 5 is slidably installed and the tip points to the diaphragm 3. The sprint spring 12 is compressed and one end is limited and the other end is against the tail end of the firing pin 5. Initially, the limiting ball 7 clamps the firing pin 5 and does not move. The outer edge of the starting piece 9 is distributed with a boss 17, which is inserted into the corresponding socket 20 on the inner wall of the shell 10. The starting piece One side of 9 is the exposed surface facing outward and the other side is the pressure surface. The starting spring 8 is compressed and one end is limited and the other end is against the pressure surface. One end of the starting rod 21 is fixed on the pressure surface and the other end is in contact with the limiting ball 7 for limitation. When entering the water, the impact acts on the exposed surface to break the boss 17, and the starting spring 8 bounces the starting piece 9 and the starting rod 21 away. After the starting rod 21 leaves the limiting ball 7, the limiting ball 7 regains its freedom and releases the restriction of the striker 5. The sprint spring 12 drives the pointed end of the striker 5 to pierce the diaphragm 3.

[0022] like Figure 2 As shown, in this embodiment, the limiting ball 7 is installed in the mounting hole of the striker 5 without falling out, one end of the starting rod 21 is fixed on the pressure surface, and the other end extends into the striker 5 to contact and limit the limiting ball 7. Initially, the limiting ball 7 is partially located outside the mounting hole to clamp the striker 5 and immobilize it. After the starting rod 21 leaves the limiting ball 7, the limiting ball 7 resumes its free fall into the mounting hole and no longer clamps the striker 5.

[0023] like Figure 2 As shown, in this embodiment, a sliding sleeve 6 and a limiting cylinder 11 are installed in the shell 10 through multiple internal steps. The firing pin 5 slides through the sliding sleeve 6 and the tail end is located in the limiting cylinder 11. The part of the limiting ball 7 initially located outside the mounting hole abuts against the sliding sleeve 6 to prevent the firing pin 5 from sliding. The starting rod 21 extends into the limiting cylinder 11. The sprint spring 12 is installed in the limiting cylinder 11 and is sleeved on the starting rod 21. The starting spring 8 is sleeved on the limiting cylinder 11 and is limited to the outside of the limiting cylinder 11.

[0024] like Figure 2As shown, in this embodiment, the housing 10 is provided with an intermediate channel 2 and a gas channel 13. The intermediate channel 2 is for the passage of the striker 5 and is connected to the bottle mouth of the high-pressure gas cylinder 1. The inlet end of the gas channel 13 is connected to the intermediate channel 2, and the outlet end is located on the outer surface of the housing 10. The outlet end of the gas channel 13 can be installed with a gas outlet nozzle 14 or a plug 4. The number of gas channels 13 is set according to needs, and generally two are used. When the high-pressure gas cylinder 1 is to supply gas to two points simultaneously, the outlet ends of both gas channels 13 are installed with a gas outlet nozzle 14. When the high-pressure gas cylinder 1 is to supply gas to only one point, the outlet end of one gas channel 13 is installed with a gas outlet nozzle 14, and the outlet end of the other gas channel 13 is installed with a plug 4.

[0025] like Figure 3 As shown, in this embodiment, there is an axial movable gap between the boss 17 and the socket 20. The instantaneous impact force generated by entering the water after airdrop acts on the exposed surface, which will drive the starting piece 9 to overcome the force of the starting spring 8 and move axially for a short distance before disconnecting the boss 17. Compared with allowing the boss 17 to be completely axially limited, this setting can better allow the boss 17 to be disconnected by the impact force.

[0026] like Figure 4 As shown, in this embodiment, a notch 18 is provided on the outward side of the boss 17. The provision of the notch 18 allows the boss 17 to be more easily impacted and disconnected, reducing the impact force required for disconnection, and can also be smoothly disconnected at a lower airdrop height.

[0027] like Figure 4 As shown, in this embodiment, the portions on both sides of the boss 17 connected to the outer edges of the start piece 9 are provided with notches 19. The provision of notches 19 can guide the boss 17 to be disconnected at the root, making the disconnection process smoother.

[0028] like Figure 4 As shown, in this embodiment, a protruding slot 15 is provided on the inward side of the boss 17, and a latch 16 is inserted into the slot 15. The latch 16 can increase the stress concentration of the boss 17 at the location, making the boss 17 easier to break by impact, reducing the impact force required for breaking, and can also be smoothly broken at a lower airdrop height.

[0029] Under normal circumstances, even if there is vibration and inertia during the transportation and installation process, the device is not enough to overcome the force of the starting spring 8, so the device can remain in a locked state. Only when it enters the water after airdrop, the instantaneous impact force generated acts on the exposed surface, which is sufficient to overcome the force of the starting spring 8, causing the boss 17 to break, and then drive the tip of the striker 5 to pierce the diaphragm 3. The device uses the impact of entering the water as a starting condition, which can not only achieve self-starting, simplify the operation of the life raft, shorten the rescue time, but also avoid accidental inflation.

[0030] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A self-starting device for airdropping a high-pressure gas cylinder into water, characterized by: When the piston enters the water, the impact on the exposed surface causes the boss to break, and the starting spring bounces the starting piece and the starting rod away. After the starting rod leaves the limiting ball, the limiting ball regains its freedom and releases the restriction of the firing pin, and the sprint spring drives the tip of the firing pin to pierce the diaphragm.

2. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 1, characterized in that: A notch is provided on the outward side of the boss.

3. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 1, characterized in that: The parts on both sides of the boss connected to the outer edge of the starting piece are provided with two notches.

4. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 1, characterized in that: A protruding slot is provided on an inwardly facing side of the boss, and a latch is inserted into the slot.

5. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 1, characterized in that: There is a movable gap between the boss and the socket in the axial direction.

6. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 1, characterized in that: The limiting ball is installed in the mounting hole of the striker without falling out. One end of the starting rod is fixed on the pressure surface, and the other end extends into the striker to contact and limit the position with the limiting ball. Initially, the limiting ball is located outside the mounting hole to hold the striker in place. After the starting rod leaves the limiting ball, the limiting ball falls freely into the mounting hole and no longer blocks the striker.

7. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 6, characterized in that: A sliding sleeve and a limiting cylinder are installed in the shell through multiple internal steps. The firing pin slides through the sliding sleeve and the tail end is located in the limiting cylinder. Initially, the part of the limiting ball located outside the mounting hole abuts against the sliding sleeve to prevent the firing pin from sliding. The starting rod extends into the limiting cylinder, the sprint spring is installed in the limiting cylinder and is sleeved on the starting rod. The starting spring is sleeved on the limiting cylinder and the limiting abuts against the outside of the limiting cylinder.

8. The self-starting device for airdropping a high-pressure gas cylinder into water as claimed in claim 1, characterized in that: An intermediate channel and a gas channel are provided on the shell. The intermediate channel is for the striker to pass through and is connected to the bottle mouth of the high-pressure gas cylinder. The inlet end of the gas channel is connected to the intermediate channel and the outlet end is located on the outer surface of the shell. The outlet end of the gas channel can be installed with a gas outlet nozzle or blocked.

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