Uncovering mechanism of underwater launching platform

Abstract

The invention discloses a cover opening mechanism of an underwater launching platform. The cover opening mechanism comprises a pushing and punching device shell, a piston assembly, an air closing mechanism and an ignition assembly. The piston assembly, the gas closing mechanism and the ignition assembly are sequentially arranged in a mounting hole formed in the pushing and punching device shell from top to bottom, the ignition assembly is ignited to generate gas, the gas expands to enable the gas closing mechanism to seal the ignition assembly at the bottom of the pushing and punching device shell, then the piston assembly is pushed to move, and the piston assembly pushes the preset load head cover open. And uncovering of the underwater launching platform is completed. The cover opening device is rapid in cover opening and convenient to reuse after the head cover of the underwater launching platform is pushed away.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical structures, and in particular to a cover opening mechanism of an underwater launching platform. Background Art

[0002] Existing underwater launch platforms often use blasting to open the cover, but blasting will cause the cover to be scrapped directly after it is opened, which is not conducive to the continuous use of the cover of the underwater launch platform and has a high risk factor. A pure mechanical structure of pushing and punching is also used to open the cover, but using a pure mechanical structure to drive the cover to open is time-consuming and is not conducive to timely opening the cover of the underwater launch platform. Summary of the invention

[0003] In view of this, the present invention provides a cover opening mechanism for an underwater launching platform, which can open the cover quickly and facilitate the reuse of the head cover of the underwater launching platform after being pushed open.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A cover opening mechanism for an underwater launch platform, comprising a thruster housing, a piston assembly, an air-locking mechanism and a firing assembly;

[0006] The piston assembly, air-sealing mechanism and ignition assembly are sequentially arranged from top to bottom in the mounting hole opened in the thruster housing. The ignition assembly ignites to generate gas. The expansion of the gas causes the air-sealing mechanism to seal the ignition assembly at the bottom of the thruster housing, and then pushes the piston assembly to move. The piston assembly pushes open the predetermined load head cover to complete the opening of the underwater launch platform.

[0007] Furthermore, the piston assembly comprises a push rod, a lug is integrally formed at the bottom of the push rod, and a slot adapted to the lug is provided in the thrust plunger housing.

[0008] Furthermore, a gas containing cavity is provided in the push rod, and the gas containing cavity penetrates the end surface facing the air-sealing mechanism.

[0009] Furthermore, the piston assembly also includes a sealing ring and an energy absorbing ring, wherein the sealing ring is installed in an annular groove provided at the bottom of the push rod, and the sealing ring contacts the inner surface of the mounting hole provided in the pusher housing;

[0010] The energy absorbing ring is sleeved on the lower part of the push rod and is located above the sealing ring, and is used for contacting with the upper end surface of the thruster housing for buffering when the push rod rises to the maximum height.

[0011] Furthermore, the air-locking mechanism comprises an air-locking seat, a baffle and an air-locking plug;

[0012] The air-blocking plug is of a truncated cone structure, with its large end facing the piston assembly; a through groove matching the profile of the air-blocking plug is provided in the air-blocking seat; the air-blocking plug is located in the through groove of the air-blocking seat, and the air-blocking plug and the inner wall of the through groove serve as a gas passage; the baffle is installed on the upper part of the air-blocking seat, and a through hole is provided on the baffle, which is connected to the gas passage.

[0013] Furthermore, the thrust plunger housing is provided with two mounting holes, which are respectively used to mount two groups of piston assemblies, a gas-blocking mechanism and a firing assembly.

[0014] Furthermore, the air-blocking mechanism and the ignition assembly are both screwed into the bottom of the installation hole of the thruster housing through external threads.

[0015] Furthermore, the ignition assembly includes an ignition seat, ignition powder and an electric squib installed 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 connected to the air-blocking seat groove.

[0016] Furthermore, the electric squib is a dual-path ignition tube.

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

[0018] Beneficial effects:

[0019] 1. The present invention adopts a pusher to open the cover. The pusher is essentially a pyrotechnic device that quickly pushes the piston rod through the combustion of gunpowder. The gas expands instantaneously to do work, and the cover can be opened in time. This principle is used to realize the rapid flipping or safe disengagement of the head cover of the underwater launch platform, which is safer.

[0020] Moreover, after the push rod of the present invention is extended, it pushes open the head cover with a predetermined load, thereby completing the opening of the underwater launch platform, which is convenient for the underwater launch platform to be reused after the cover is pushed open. The push rod of the present invention can also be used to prop open a head cover with a mass of not less than 250 kg and an opening angle of not less than 90°. The opening force is large and the opening is rapid, which solves the problem of time-consuming and untimely opening of the cover driven by the traditional mechanical structure.

[0021] 2. The integrally formed lug at the bottom of the push rod of the present invention allows the push rod to be limited when installed in the hole of the push punch housing, thereby increasing the stability of the piston assembly installation.

[0022] 3. The piston assembly of the present invention is provided with a sealing ring to achieve airtightness between the push rod and the thruster housing, thereby preventing energy leakage of the ignition assembly due to unreliable sealing between the thruster housing and the push rod; secondly, an energy-absorbing ring sleeved at the lower part of the push rod makes it possible for the energy-absorbing ring to contact with the thruster housing to buffer the push rod when the push rod rises to the maximum height, so that the kinetic energy of the push rod is buffered by the energy-absorbing ring, thereby reducing the impact of the push rod on the thruster housing when the push rod rises to the maximum height.

[0023] 4. The air-locking mechanism and the ignition assembly of the present invention are screwed together at the bottom of the installation hole of the thruster housing through external threads, so that the ignition assembly serves the purpose of positioning the air-locking mechanism.

[0024] 5. The electric squib of the present invention is a double-path ignition tube with 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

[0032] Among them, 1-thruster housing, 2-piston assembly, 21-push rod, 22-energy absorbing ring, 23-sealing ring, 24-ear, 3-air-locking mechanism, 31-air-locking seat, 32-blocking piece, 33-air-locking plug, 4-ignition assembly, 5-electric squib. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0034] The present invention provides a cover opening mechanism for an underwater launching platform, comprising a thruster housing 1, a piston assembly 2, an air-blocking mechanism 3 and a firing assembly 4.

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

[0036] In this embodiment, the piston assembly 2 includes a push rod 21, and a support ear 24 is integrally formed at the bottom of the push rod 21. Figure 6As shown, a slot adapted to the lug 24 is provided in the push punch housing 1, so that the push rod 21 is limited when installed in the mounting hole of the push punch housing 1, thereby increasing the stability of the installation of the piston assembly 2. When the piston assembly 2 moves, that is, the push rod 21 moves in the mounting hole of the push punch housing 1, and the lug 24 at the bottom is sheared off. A gas accommodating chamber is provided in the push rod 21, and the gas accommodating chamber passes through the end surface facing the air-closing mechanism 3.

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

[0038] like Figure 5 As shown, the piston assembly 2 further includes a sealing ring 23 and an energy absorbing ring 22. The sealing ring 23 is installed in the annular groove provided at the bottom of the push rod 21, and the sealing ring 23 contacts the inner surface of the mounting hole provided in the thruster 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 in the thruster housing 1, the sealing ring 23 is in close contact with the inner wall of the mounting hole of the thruster housing 1, so as to achieve the airtightness between the push rod 21 and the thruster housing 1, and to prevent the energy generated by the ignition assembly 4 from leaking due to the unreliable sealing between the thruster housing 1 and the push rod 21. The energy absorbing ring 22 sleeved on the push rod 21 makes the push rod 21 contact with the upper end surface of the thruster housing 1 to buffer the push rod 21 when the push rod 21 rises to the maximum height, so that the kinetic energy of the push rod 21 is buffered by the energy absorbing ring 22, and the impact of the push rod 21 on the thruster housing 1 when the push rod 21 rises to the maximum height is weakened.

[0039] like Figure 4 As shown, the air-blocking mechanism 3 includes an air-blocking seat 31, a baffle 32 and an air-blocking plug 33; the air-blocking plug 33 is a truncated cone structure, with the large end facing the piston assembly 2, and a through groove matching the profile of the air-blocking plug 33 is provided in the air-blocking seat 31, and the diameter of the small end of the through groove is not less than the diameter of the small end of the air-blocking plug 33, and is smaller than the diameter of the large end of the air-blocking plug 33; the air-blocking plug 33 is located in the through groove of the air-blocking seat 31, and the air-blocking plug 33 and the inner wall of the through groove serve as a gas passage; the baffle 32 is installed on the upper part of the air-blocking seat 31, and a through hole is provided on the baffle 32, which is connected to the gas passage. An installation groove is provided on the upper part of the air-blocking seat 31, and the baffle 32 is arranged in the installation groove. After the ignition assembly 4 is installed, the baffle 32 of the air-blocking mechanism 3 is pressed onto the bottom surface of the push rod 21.

[0040] Preferably, a weight-reducing groove begins at the large end of the air-blocking plug 33 , and the weight-reducing groove is in a conical shape with the top facing the small end of the air-blocking plug 33 .

[0041] The ignition assembly 4 includes an ignition seat, ignition powder and an electric squib 5 installed 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 connected to the through groove of the air-blocking seat 31, and the electric squib 5 is installed at the hole. The electric squib 5 is a double-path ignition tube.

[0042] like Figure 1 , Figure 3 As shown, in this embodiment, the thrust plunger housing 1 is a T-shaped structure, and the thrust plunger housing 1 has two mounting holes, which are respectively used to mount two sets of piston assemblies 2, a gas-blocking mechanism 3, and a firing assembly 4. The gas-blocking mechanism 3 and the firing assembly 4 are both screwed into the bottom of the mounting hole of the thrust plunger housing 1 through external threads, and the firing assembly 4 serves to position the gas-blocking mechanism 3.

[0043] When the mechanism is working, the electric squib 5 ignites the ignition charge in the ignition seat under the stimulation of external input energy, so that the ignition component 4 instantly generates a large amount of gas, and the gas expands in the cavity at the bottom of the thruster housing 1, and the gas enters the gas containing cavity in the push rod 21 through the gas channel and the through hole on the baffle 32. The gas expansion generates a large pressure, which pushes open the air-blocking plug 33 and makes it move downward and embed into the through groove of the air-blocking seat 31, so that the ignition component 4 is sealed at the bottom of the thruster housing 1 to form a closed cavity, and then pushes the piston assembly 2 to move; and when the piston assembly 2 moves, the push rod 21 moves upward in the mounting hole in the middle of the thruster housing 1, and at the same time, the bottom support ear 24 is sheared off when the push rod 21 moves, so that the push rod 21 extends and then pushes open the predetermined load head cover, completing the opening of the underwater launch platform.

[0044] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cover opening mechanism for an underwater launching platform, characterized in that: It includes a thruster housing, a piston assembly, a gas-blocking mechanism and an ignition assembly; The piston assembly, air-sealing mechanism and ignition assembly are sequentially arranged from top to bottom in the mounting hole opened in the thruster housing. The ignition assembly ignites to generate gas. The expansion of the gas causes the air-sealing mechanism to seal the ignition assembly at the bottom of the thruster housing, and then pushes the piston assembly to move. The piston assembly pushes open the predetermined load head cover to complete the opening of the underwater launch platform.

2. The cover opening mechanism of the underwater launching platform according to claim 1, characterized in that: The piston assembly comprises a push rod, a lug is integrally formed at the bottom of the push rod, and a slot adapted to the lug is provided in the push punch housing.

3. The cover opening mechanism of the underwater launching platform as claimed in claim 2, characterized in that: A gas containing cavity is arranged in the push rod, and the gas containing cavity penetrates the end surface facing the air-sealing mechanism.

4. The cover opening mechanism of the underwater launching platform as claimed in claim 2, characterized in that: The piston assembly also includes a sealing ring and an energy absorbing ring, wherein the sealing ring is installed in an annular groove provided at the bottom of the push rod, and the sealing ring contacts the inner surface of the mounting hole provided in the pusher housing; The energy absorbing ring is sleeved on the lower part of the push rod and is located above the sealing ring, and is used for contacting with the upper end surface of the thruster housing for buffering when the push rod rises to the maximum height.

5. The cover opening mechanism of the underwater launching platform according to claim 1, characterized in that: The air-blocking mechanism comprises an air-blocking seat, a baffle and an air-blocking plug; The air-blocking plug is of a truncated cone structure, with its large end facing the piston assembly; a through groove matching the profile of the air-blocking plug is provided in the air-blocking seat; the air-blocking plug is located in the through groove of the air-blocking seat, and the air-blocking plug and the inner wall of the through groove serve as a gas passage; the baffle is installed on the upper part of the air-blocking seat, and a through hole is provided on the baffle, which is connected to the gas passage.

6. The cover opening mechanism of the underwater launching platform as claimed in claim 1, characterized in that: The thrust plunger housing is provided with two mounting holes, which are respectively used for mounting two groups of piston assemblies, a gas-blocking mechanism and a firing assembly.

7. The cover opening mechanism of the underwater launching platform according to claim 1 or 6, characterized in that: The air-blocking mechanism and the ignition assembly are both screwed together at the bottom of the installation hole of the thruster housing through external threads.

8. The cover opening mechanism of the underwater launching platform as claimed in claim 5, characterized in that: The ignition assembly comprises an ignition seat, ignition powder and an electric squib installed in the ignition seat; the ignition powder is filled in the ignition seat, and a hole communicating with the air-blocking seat through groove is provided at the upper end of the ignition seat.

9. The cover opening mechanism of the underwater launching platform as claimed in claim 8, characterized in that: The electric squib is a double-path ignition tube.

10. The cover opening mechanism of the underwater launching platform according to claim 1, characterized in that: The outer circumference of the push rod head is threadedly connected with the buffer cap.

Images