A cover opening mechanism of an underwater launching platform

Abstract

The application discloses a cover opening mechanism of an underwater launching platform, which comprises a pusher shell, a piston assembly, a gas sealing mechanism and a firing assembly; the piston assembly, the gas sealing mechanism and the firing assembly are sequentially arranged in a mounting hole of the pusher shell from top to bottom; the firing assembly ignites gas; the gas expands to seal the firing assembly at the bottom of the pusher shell; then the piston assembly is pushed to move; the piston assembly pushes away a predetermined load head cover; and the cover opening of the underwater launching platform is completed. The cover opening mechanism is rapid and convenient for repeated use after the head cover of the underwater launching platform is pushed away.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical structure, in particular to a cover opening mechanism of underwater launching platform. BACKGROUND

[0002] The existing underwater launching platform often adopts the blasting mode to open the cover. However, the cover is directly scrapped after being opened by the blasting mode, which is not conducive to the continuous use of the cover of the underwater launching platform, and the danger coefficient is high. A push-pull pure mechanical structure is also used to open the cover. However, the pure mechanical structure consumes time to drive the cover to open, which is not conducive to the timely opening of the cover of the underwater launching platform. SUMMARY

[0003] Therefore, the present application provides a cover opening mechanism of underwater launching platform, which can quickly open the cover and facilitate the repeated use of the cover after being pushed open.

[0004] The technical scheme adopted by the present application is as follows:

[0005] A cover opening mechanism of underwater launching platform, comprising a pusher shell, a piston assembly, a gas sealing mechanism and a firing assembly;

[0006] The piston assembly, the gas sealing mechanism and the firing assembly are sequentially arranged in the mounting hole of the pusher shell from top to bottom. The firing assembly ignites to generate gas. The gas expansion causes the gas sealing mechanism to seal the firing assembly at the bottom of the pusher shell. Then the piston assembly is pushed to move, the piston assembly pushes open the predetermined load cover, and the opening of the underwater launching platform is completed.

[0007] Further, the piston assembly comprises a push rod, and the bottom of the push rod is integrally formed with an ear. The pusher shell is provided with a clamping groove matched with the ear.

[0008] Further, the push rod is provided with a gas containing cavity, and the gas containing cavity penetrates through the end face facing the gas sealing mechanism.

[0009] Further, the piston assembly further comprises a sealing ring and an energy absorbing ring. The sealing ring is installed in the annular groove formed in the bottom of the push rod, and the sealing ring is in contact with the inner surface of the mounting hole of the pusher shell.

[0010] The energy absorbing ring is sleeved on the lower part of the push rod and located above the sealing ring, and is used to buffer the push rod when it rises to the maximum height and collides with the upper end face of the pusher shell.

[0011] Further, the gas sealing mechanism comprises a gas sealing seat, a baffle and a gas sealing plug.

[0012] The closed gas plug is a circular truncated cone structure, and the large end faces the piston assembly; the closed gas seat is internally provided with a through groove matched with the profile of the closed gas plug; the closed gas plug is located in the through groove of the closed gas seat, and the space between the closed gas plug and the inner wall of the through groove serves as a gas passage; the baffle is mounted on the upper portion of the closed gas seat, and a through hole is formed in the baffle and communicates with the gas passage.

[0013] Further, the pusher shell is provided with two mounting holes for mounting two groups of piston assemblies, closed gas mechanisms and ignition assemblies.

[0014] Further, the closed gas mechanism and the ignition assembly are screwed into the bottom of the mounting hole of the pusher shell through external threads.

[0015] Further, the ignition assembly comprises an ignition seat, ignition powder and an electric detonation tube mounted in the ignition seat; the ignition powder is filled in the ignition seat, and the upper end of the ignition seat is provided with a hole communicating with the through groove of the closed gas seat.

[0016] Further, the electric detonation tube is a double-path ignition tube.

[0017] Further, the outer circumference of the head of the push rod is threadedly connected with the buffer cap.

[0018] Beneficial effects:

[0019] 1. The pusher is used for opening the cover, and the pusher is essentially a pyrotechnic device for rapidly pushing the piston rod to rapidly push and open, the gas expands to do work instantaneously, the cover can be opened in time, the principle is used to realize the rapid turning or safe separation of the head cover of the underwater launching platform, and the safety is relatively high.

[0020] Moreover, after the push rod is extended to push away the predetermined load head cover, the opening of the cover of the underwater launching platform is completed, the cover of the underwater launching platform is convenient to push away and then reused, the push rod can also be used to support the head cover with a mass of not less than 250 kg and a support angle of not less than 90°, the opening force is large, the opening is rapid, and the problems of time consumption and untimely opening of the cover caused by the traditional mechanical structure are solved.

[0021] 2. The supporting lug integrally formed at the bottom of the push rod is used for limiting the push rod when the push rod is installed in the opening of the pusher shell, and the stability of the installation of the piston assembly is improved.

[0022] 3. The piston assembly is provided with a sealing ring, the sealing property between the push rod and the pusher shell is realized, the energy leakage caused by the unfirm sealing of the pusher shell and the push rod is avoided, the energy-absorbing ring sleeved at the lower portion of the push rod is used for buffering the push rod when the push rod is lifted to the maximum height, the energy-absorbing ring contacts the pusher shell to buffer the push rod, the kinetic energy of the push rod is buffered through the energy-absorbing ring, and the impact of the push rod on the pusher shell when the push rod is lifted to the maximum height is weakened.

[0023] 4. The gas-tight mechanism and the ignition assembly of the present invention are screwed into the bottom of the mounting hole of the pusher housing by external threads, so that the ignition assembly can be used to position the gas-tight mechanism.

[0024] 5. The electric detonator of this invention is a dual-circuit ignition tube, which has high ignition reliability.

[0025] 6. The outer circumference of the push rod head of the present invention is threadedly connected to the buffer cap to prevent the push rod head from directly colliding with the bottom of the object being acted upon. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the overall structure of the present invention.

[0027] Figure 2 This is a first cross-sectional structural diagram of the present invention.

[0028] Figure 3 This is a second cross-sectional view of the present invention.

[0029] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0030] Figure 5 This is a cross-sectional view of the piston assembly.

[0031] Figure 6 This is a top view of the plug assembly.

[0032] Among them, 1-pumper housing, 2-piston assembly, 21-push rod, 22-energy-absorbing ring, 23-sealing ring, 24-support lug, 3-air-sealing mechanism, 31-air-sealing seat, 32-baffle, 33-air-sealing plug, 4-ignition assembly, 5-electric detonation tube. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] The present invention provides an opening mechanism for an underwater launch platform, comprising a thruster housing 1, a piston assembly 2, a gas-sealing mechanism 3, and an ignition assembly 4.

[0035] like Figure 2 As shown, the piston assembly 2, the gas-sealing mechanism 3, and the ignition assembly 4 are arranged sequentially from top to bottom in the mounting holes opened in the thruster housing 1. The ignition assembly 4 ignites and generates gas. The gas expands and causes the gas-sealing mechanism 3 to seal the ignition assembly 4 at the bottom of the thruster housing 1. Then, it pushes the piston assembly 2 to move. The piston assembly 2 pushes open the predetermined load cover, completing the opening of the underwater launch platform.

[0036] In this embodiment, the piston assembly 2 includes a push rod 21, and the bottom of the push rod 21 is integrally formed with a lug 24, such as... Figure 6As shown, the pusher housing 1 has a slot that matches the lug 24, which limits the push rod 21 when it is installed in the mounting hole of the pusher housing 1, increasing the stability of the piston assembly 2 installation. When the piston assembly 2 moves, that is, when the push rod 21 moves in the mounting hole of the pusher housing 1, it shears off the lug 24 at the bottom. The push rod 21 has a gas receiving cavity, and the gas receiving cavity extends through the end face facing the air-sealing mechanism 3.

[0037] As an improvement, the head of push rod 21 is provided with an external threaded interface for screwing on the buffer cap. The outer circumference of the head of push rod 21 is threadedly connected to the buffer cap to prevent the head of push rod 21 from directly colliding with the bottom of the target object (the predetermined load head cover).

[0038] like Figure 5 As shown, the piston assembly 2 also includes a sealing ring 23 and an energy-absorbing ring 22. The sealing ring 23 is installed in an annular groove at the bottom of the push rod 21 and contacts the inner surface of the mounting hole in the pusher housing 1. The energy-absorbing ring 22 is sleeved on the lower part of the push rod 21 and is located above the sealing ring 23. When the push rod 21 moves within the pusher housing 1, the sealing ring 23 is tightly attached to the inner wall of the mounting hole in the pusher housing 1, achieving a tight seal between the push rod 21 and the pusher housing 1. This prevents energy leakage caused by a poor seal between the pusher housing 1 and the push rod 21, thus avoiding energy leakage. The energy-absorbing ring 22 sleeved on the push rod 21 allows the push rod 21 to rise to its maximum height. When the push rod 21 rises to its maximum height, the energy-absorbing ring 22 contacts the upper surface of the pusher housing 1 to buffer the push rod 21, thus reducing the impact of the push rod 21 on the pusher housing 1 when it rises to its maximum height.

[0039] like Figure 4 As shown, the air-sealing mechanism 3 includes an air-sealing seat 31, a baffle 32, and an air-sealing plug 33. The air-sealing plug 33 has a frustum structure, with its large end facing the piston assembly 2. The air-sealing seat 31 has a through groove that matches the profile of the air-sealing plug 33. The diameter of the small end of the through groove is not less than the diameter of the small end of the air-sealing plug 33, and is less than the diameter of the large end of the air-sealing plug 33. The air-sealing plug 33 is located in the through groove of the air-sealing seat 31, and the space between the air-sealing plug 33 and the inner wall of the through groove serves as a gas passage. The baffle 32 is installed on the upper part of the air-sealing seat 31, and a through hole is opened on the baffle 32, which communicates with the gas passage. The upper part of the air-sealing seat 31 has an installation groove, and the baffle 32 is placed in the installation groove. After the ignition assembly 4 is installed, the baffle 32 of the air-sealing mechanism 3 is pressed onto the bottom surface of the push rod 21.

[0040] Preferably, the large end of the air-sealing plug 33 has a weight-reducing groove, which is conical in shape and has its top facing the small end of the air-sealing plug 33.

[0041] The firing assembly 4 comprises an ignition seat, ignition powder and an electric detonator 5 installed in the ignition seat. The ignition powder is filled in the ignition seat, and the ignition seat is provided with a hole communicating with the through slot of the closing seat 31, and the electric detonator 5 is installed at the hole. The electric detonator 5 is a double-path ignition tube.

[0042] As shown in Figure 1 、 Figure 3 In the embodiment, the pusher shell 1 is in T-shaped structure, and the pusher shell 1 is provided with two mounting holes for mounting two groups of piston assemblies 2, closing mechanisms 3 and firing assemblies 4. The closing mechanism 3 and the firing assembly 4 are screwed at the bottom of the mounting hole of the pusher shell 1 through external threads, and the firing assembly 4 serves to position the closing mechanism 3.

[0043] When the mechanism works, the electric detonator 5 is stimulated by external input energy to ignite the ignition powder in the ignition seat, so that a large amount of gas is generated in the firing assembly 4 instantaneously. The gas expands in the cavity at the bottom of the pusher shell 1, and then enters the gas containing cavity in the push rod 21 through the gas passage and the through hole on the baffle 32. The gas expands to generate a large pressure, pushes away the closing plug 33 to make it move downwardly and embed into the through slot of the closing seat 31, so that the firing assembly 4 is sealed in the closed cavity at the bottom of the pusher shell 1, and then the piston assembly 2 is moved. When the piston assembly 2 moves, the push rod 21 moves upwardly in the mounting hole in the middle of the pusher shell 1, and the push rod 21 is sheared off the bottom ear 24 when it moves, so that the push rod 21 extends and pushes away the predetermined load head cover, and the cover opening of the underwater launching platform is completed.

[0044] To sum up, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A can-opening mechanism for an underwater launch platform, characterized by, The application relates to a pusher shell, a piston assembly, a gas sealing mechanism and a firing assembly. The piston assembly, the gas sealing mechanism and the firing assembly are sequentially arranged in a mounting hole of the pusher shell from top to bottom, the firing assembly ignites gas, the gas expands to seal the firing assembly at the bottom of the pusher shell through the gas sealing mechanism, then the piston assembly is driven to move, the piston assembly pushes away a predetermined load head cover, and the cover opening of the underwater launching platform is completed. The piston assembly comprises a push rod, the bottom of the push rod is integrally formed with an ear, a clamping groove matched with the ear is formed in the pusher shell, a gas containing cavity is arranged in the push rod, and the gas containing cavity penetrates through the end face towards the gas sealing mechanism. The gas sealing mechanism comprises a gas sealing seat, a baffle and a gas sealing plug, the gas sealing plug is in a circular truncated cone structure, the large end faces the piston assembly, a through groove matched with the profile of the gas sealing plug is arranged in the gas sealing seat, the gas sealing plug is arranged in the through groove of the gas sealing seat, the gas channel is formed between the gas sealing plug and the inner wall surface of the through groove, the baffle is arranged on the upper portion of the gas sealing seat, a through hole is formed in the baffle and communicates with the gas channel, the firing assembly comprises an ignition seat, ignition powder and an electric detonation tube arranged in the ignition seat, the ignition powder is filled in the ignition seat, and a hole is arranged at the upper end of the ignition seat and communicates with the through groove of the gas sealing seat.

2. The can release mechanism for an underwater launch platform of claim 1, wherein, The piston assembly further comprises a sealing ring and an energy absorbing ring, the sealing ring is arranged in an annular groove formed in the bottom of the push rod, and the sealing ring is in contact with the inner surface of the mounting hole of the pusher shell. The energy absorbing ring is sleeved on the lower portion of the push rod and is arranged above the sealing ring, and is used for buffering when the push rod rises to the maximum height and abuts against the upper end surface of the pusher shell.

3. The can release mechanism for an underwater launch platform of claim 1, wherein, The pusher shell is provided with two mounting holes for mounting two groups of piston assemblies, gas sealing mechanisms and firing assemblies.

4. The can release mechanism for an underwater launch platform of claim 1 or 3, wherein, The gas sealing mechanism and the firing assembly are screwed into the bottom of the mounting hole of the pusher shell through external threads.

5. The can release mechanism for an underwater launch platform of claim 1, wherein, The electric detonation tube is a double-path ignition tube.

6. The can release mechanism for an underwater launch platform of claim 1, wherein, The outer circumference of the head portion of the push rod is in threaded connection with the buffer cap.

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