Underwater gun muzzle sealing device and use method

Abstract

The present invention proposes an underwater gun muzzle sealing device and a method for using the sealing device, the sealing device includes a cabin, a connecting sleeve, a front plate, a rear plate, an air pipe, a signal cable, a cover plate, a clutch rotating assembly and a trigger assembly. The present invention drives the driving shaft to rotate through a motor, and the driving shaft drives the clutch sleeve to axially move and mesh with the rotating shaft and rotate, flipping the cover plate of the ejection port to achieve rapid opening and closing of the shooting channel, and realizes the blocking of the muzzle of the underwater gun before and after shooting to the external water, so as to prevent water from entering the main body of the gun during the shooting of the underwater gun and affecting the normal operation of the gun. A limit ring is installed on the rotating shaft of the present invention, and the boss and inclined surface on the limit ring touch the switch contact to realize the control of the flipping movement of the cover plate of the ejection port. In addition, by installing an air pressure sensor in the small sealing chamber, the air pressure in the sealing chamber is monitored in real time and fed back to the console. In addition, a one-way valve is installed at the bottom of the small sealing chamber to discharge excess gas in the small sealing chamber and water entering the small sealing chamber.

Description

Technical Field

[0001] The invention relates to the field of underwater gun muzzle sealing, and in particular to an underwater gun muzzle sealing device and a use method thereof. Background Art

[0002] Affected by water friction resistance, the speed and distance of traditional projectiles in water are very limited. Therefore, the ability to use artillery to launch ammunition to attack and defend incoming targets under the water surface has not been realized. With the development of supercavitation technology, it has become possible to launch kinetic ammunition underwater for underwater short-range defense. Underwater artillery is an underwater short-range strike and defense weapon system developed based on supercavitation technology. It is an active exploration in the field of underwater short-range artillery defense and is of great significance to the construction of our military's underwater defense system.

[0003] The main body of the underwater gun is submerged below the water surface, and supercavitating ammunition is fired automatically to strike short-range targets. In order to prevent external water from entering the internal body of the underwater gun and affecting the normal operation of the gun, the main body of the gun should be isolated from the outside as much as possible; at the same time, in order to ensure the smooth flight channel of the projectile during shooting, the front of the gun muzzle cannot be completely closed. Therefore, effective sealing measures should be taken at the muzzle of the underwater gun. If the sealing measures at the muzzle of the underwater gun are unreliable, water will directly flow into the barrel and enter the internal body of the gun, causing the gun to stop firing. Therefore, the sealing of the muzzle of the underwater gun is particularly critical to the sealing design of the gun body. Summary of the invention

[0004] The muzzle of an underwater gun cannot be completely sealed. If the sealing measures taken are unreliable, water will enter the interior of the gun body from the muzzle during the gun firing process, thereby affecting the normal operation of the gun. In order to avoid the above-mentioned problems, the present invention provides an underwater muzzle sealing device and a method of use. By quickly opening and closing a shooting channel, filling the channel with high-pressure gas, and sealing in a constant pressure controlled manner, water outside the muzzle of the gun is sealed and blocked during the underwater gun firing process, thereby preventing water from entering the interior of the gun body from the muzzle during the underwater gun firing process, resulting in a gun stopping failure.

[0005] The technical solution of the present invention is:

[0006] An underwater gun muzzle sealing device comprises a cabin, a connecting sleeve, a front end plate, a rear end plate, an air pipe, a signal cable, a cover plate, a clutch rotating assembly and a trigger assembly;

[0007] The coupling sleeve is used to cooperate with the external artillery barrel;

[0008] The cabin body includes a motor cabin and a sealed chamber at one end of the motor cabin, and the sealed chamber is divided into a small sealed chamber and a large sealed chamber;

[0009] The motor is installed in the motor cabin, and the external console controls the operation of the motor through a signal cable;

[0010] The small sealed chamber is provided with a connecting sleeve mounting hole for sealingly connecting with the front end of the connecting sleeve; a one-way valve and an air pressure sensor are installed in the small sealed chamber; the air pressure sensor is used to monitor the air pressure in the small sealed chamber in real time and transmit the air pressure signal to the external control console; the external control console controls the external air source to fill the small sealed chamber with air through the air pipe, so that the air pressure in the small sealed chamber is maintained in a constant range; the one-way valve is used to discharge excess air in the small sealed chamber, and discharge water that enters the small sealed chamber when the cover is opened;

[0011] The large sealed chamber is connected to the motor compartment through a drive shaft mounting hole; a clutch rotating assembly and a trigger assembly are installed in the large sealed chamber;

[0012] The sealing chamber of the cabin body is sealed at the end face by the front end plate, and the front end plate is provided with a bullet outlet and a shaft sleeve mounting hole; when the front end plate is installed on the cabin body, the bullet outlet and the connecting sleeve mounting hole and the bullet passing hole in the connecting sleeve are coaxial to form a bullet passing channel;

[0013] The motor cabin is sealed at the end face through the rear end plate, and the rear end plate is provided with a rear connecting shaft mounting hole and a wire passing hole; wherein the rear connecting shaft mounting hole is butted with the rear end of the connecting sleeve, and the signal cable and the air pipe enter the cabin through the wire passing hole and the wire passing hole is sealed by a sealing block;

[0014] The clutch rotating assembly is driven by a motor and can drive the cover plate outside the front end plate to rotate, so as to achieve sealing covering or opening of the bullet outlet of the front end plate, and after covering or opening in place, a signal of reaching the position is sent through the trigger assembly.

[0015] Furthermore, the front end of the connecting sleeve has a front flange, a front connecting shaft and a bullet hole, and the front connecting shaft is used to dock with the connecting sleeve mounting hole in the cabin; the rear end of the connecting sleeve has a rear flange, a rear connecting shaft, and a muzzle connecting hole, and the rear connecting shaft is used to dock with the rear connecting shaft mounting hole on the rear end plate.

[0016] Furthermore, the clutch rotating assembly includes a rotating shaft, a limit seat, a clutch sleeve, a pin shaft, a constraint sleeve and a driving shaft;

[0017] The center of the drive shaft has a through hole with a keyway for coaxially fixed connection with the motor output shaft, and the drive shaft can rotate synchronously with the motor output shaft; the outer cylinder of the drive shaft has a pair of drive shaft spiral grooves symmetrical to the drive shaft axis for matching with the pin shaft;

[0018] One end of the clutch sleeve is provided with a pair of clutch sleeve clutch teeth symmetrical with respect to the clutch sleeve axis, and a pair of coaxial clutch sleeve through holes are provided on the side wall surface of the clutch sleeve for cooperating with the pin shaft;

[0019] One end of the limit seat is provided with a limit seat square platform, which is used to be connected with the end face of the large sealing chamber by bolts; the other end of the limit seat is provided with a pair of limit seat limit teeth symmetrical with respect to the limit seat axis, and a pair of limit seat limit grooves symmetrical with respect to the limit seat axis are provided on the side wall surface of the limit seat, and the limit seat limit groove is L-shaped, and is divided into two sections parallel to the limit seat axis and perpendicular to the limit seat axis;

[0020] One end of the rotating shaft is provided with a rotating shaft disc, and the rotating shaft disc is provided with a rotating shaft clutch tooth;

[0021] The side surface of the limit ring is provided with a limit ring inclined surface and a limit ring boss, which are used to contact with the trigger assembly and provide feedback on the rotation and axial movement position state of the rotating shaft;

[0022] The driving shaft is installed on the driving shaft mounting hole in the large sealing chamber and is coaxially fixedly connected with the motor output shaft; the clutch sleeve is sleeved on the outer cylinder of the driving shaft, and the clutch sleeve through hole on the clutch sleeve corresponds to the position of the spiral groove on the driving shaft; the limit seat is sleeved on the outer cylinder of the clutch sleeve, the limit seat square table is fixedly connected to the end face of the large sealing chamber, and the limit groove of the limit seat corresponds to the position of the clutch sleeve through hole; a pin is installed in the limit groove of the limit seat, the clutch sleeve through hole, and the spiral groove of the driving shaft, and a constraint sleeve is installed on the outer cylinder of the limit seat to prevent the pin from escaping from the limit groove of the limit seat, the clutch sleeve through hole, and the spiral groove of the driving shaft.

[0023] Furthermore, the clutch rotating assembly also includes a sleeve, a limit ring and a spring; the sleeve is installed in the sleeve mounting hole of the front end plate; the middle section of the shaft cylinder is installed in the sleeve, and the shaft disk of the shaft faces the inside of the sealed cabin; a spring is mounted on the shaft cylinder between the shaft disk and the sleeve; a limit ring is fixedly installed on the shaft disk, the limit ring can rotate and move axially synchronously with the shaft, and during the rotation and movement process, the boss and inclined surface on the limit ring can contact the trigger assembly to provide feedback on the rotation and axial movement position state of the shaft.

[0024] Furthermore, the cover plate is provided with a countersunk hole and a connecting through hole, and a sealing plate is installed in the countersunk hole; the rotating shaft extends outward from the outside of the front end plate and is fixedly connected to the connecting through hole of the cover plate; when the rotating shaft rotates, it can drive the cover plate to rotate, and the sealing plate is used to cover the bullet outlet of the front end plate to achieve sealing of the bullet outlet.

[0025] Furthermore, a pull rod is provided between the cabin and the rear end plate to achieve auxiliary connection.

[0026] The installation method of the underwater gun muzzle sealing device comprises the following steps:

[0027] Step 1: Pass one end of the air pipe through the wire hole of the rear end plate, the motor compartment of the cabin, and the large sealed chamber, and install it on the side wall of the small sealed chamber. Connect the other end to the external air source.

[0028] Step 2: Connect one end of the motor cable to the motor through the wire hole on the rear panel and into the motor compartment; connect one end of the signal cable to the pressure sensor and touch switch through the wire hole on the rear panel and the motor compartment and into the large sealed chamber, and connect the other end of the motor cable and signal cable to the console;

[0029] Step 3: Install the drive shaft in the motor compartment, install the motor, and connect the motor cable;

[0030] Step 4: Install the sealing gasket and the connecting sleeve outside the cabin;

[0031] Step 5, install the rear end plate on the rear end face of the cabin body, connect the rear connecting shaft of the connecting sleeve with the rear connecting shaft mounting hole of the rear end plate, and install the sealing sleeve in the muzzle connecting hole;

[0032] Step 6: Install the pull rod;

[0033] Step 7: Install a one-way valve and a pressure sensor in the small sealed chamber, and connect the pressure sensor control cable;

[0034] Step 8: Install the limit seat in the large sealed chamber, install the clutch sleeve, rotate the limit seat to adjust the position of the limit seat limit groove, the clutch sleeve through hole, and the drive shaft spiral groove, and install the pin shaft;

[0035] Step 9: Install the touch switch and connect the touch switch control cable;

[0036] Step 10: Install the shaft sleeve on the front end plate;

[0037] Step 11, install the limiting ring on the shaft, put on the spring, and insert the shaft into the shaft sleeve;

[0038] Step 12: Install the front end plate on the front end surface of the cabin body. During installation, adjust the position of the limit ring so that the touch switch can be reliably pressed when the cover plate is rotated into place.

[0039] Step 13, install a baffle plate at the extended end of the rotating shaft outside the front end plate, and install a sealing plate in the baffle plate countersunk hole before installation;

[0040] Step 14. Install the eyebolts on both sides of the cabin.

[0041] The method for using the underwater gun muzzle sealing device comprises the following process:

[0042] First, connect the gun barrel to the connecting hole of the connecting sleeve muzzle, and connect the air pipe to the external air source; when there is no combat mission, the control console receives the feedback signal of the air pressure sensor, controls the external air source to fill the small sealed chamber through the air pipe, so that the air pressure in the small sealed chamber is higher than the external water pressure and maintained in a constant range;

[0043] When the artillery performs a shooting task, the console controls the external air source to continuously fill the small sealed chamber with gas through the air pipe; at the same time, a rotation signal is sent to the motor, and the rotation of the motor drives the drive shaft to rotate, and the spiral groove of the drive shaft drives the pin shaft to move along the limit groove on the limit seat, driving the clutch sleeve to first move axially, and then rotate around the axis; during the movement of the clutch sleeve, the clutch teeth of the clutch sleeve are engaged with the clutch teeth of the rotating shaft, pushing the rotating shaft to move axially and rotate, thereby driving the baffle at the mouth of the bullet discharge port to open; the rotation of the rotating shaft also drives the limit ring installed on the shaft to rotate, and after the rotating shaft rotates into place, that is, after the baffle rotates away from the bullet discharge port, the boss on the limit ring touches the contact switch, and the contact switch feeds back a "door open in place" signal to the console, stops the motor and connects the firing circuit, and the artillery fires the projectile, and the projectile passes through the bullet passage;

[0044] After the artillery shooting is completed, the control console sends a reverse rotation signal to the motor, the motor rotation drives the drive shaft to rotate, the drive shaft spiral groove pushes the pin shaft to move along the limit groove on the limit seat, and drives the clutch sleeve to rotate around the axis first, and then to move axially; while the clutch sleeve rotates around the axis, it drives the shaft to rotate, thereby driving the baffle to rotate to the mouth of the bullet discharge port; the clutch sleeve moves axially, the clutch teeth of the clutch sleeve disengage from the clutch teeth of the shaft, and the shaft moves axially under the action of the spring, and drives the baffle to press the sealing plate and the bullet discharge port tightly, closing the bullet passage. Closed; the rotation of the shaft drives the limit ring installed on the shaft to rotate and move axially. After moving to the right position, the inclined surface 5 on the limit ring touches the contact switch, and the contact switch feeds back the "door closed" signal to the console, stops the motor and disconnects the firing circuit, and the gun stops firing; the gas continuously replenished in the small sealed chamber discharges the water that enters the small sealed chamber during the gun firing process out of the cabin through the one-way valve. After the drainage process takes the set time, the console controls the external gas source to stop inflating the small sealed chamber, and the underwater muzzle sealing device completes a working process.

[0045] Beneficial Effects

[0046] The technical effects of the present invention are:

[0047] 1. The underwater gun muzzle sealing device of the present invention can block the water outside the muzzle of the underwater gun, thereby preventing water from entering the inside of the gun body during the underwater gun shooting process and affecting the normal operation of the gun.

[0048] 2. By changing the size of the projectile flight channel in the present invention, it can match the gun barrels of different calibers.

[0049] 3. The present invention drives the driving shaft to rotate through the motor, and the driving shaft drives the clutch sleeve to move axially to mesh and rotate with the rotating shaft, flipping the cover plate of the ejection port to achieve rapid opening and closing of the shooting channel, and realizing the blocking of the muzzle of the underwater gun from external water before and after shooting.

[0050] 4. A limit ring is installed on the rotating shaft of the present invention, and the boss and inclined surface on the limit ring touch and press the switch contacts to realize the control of the flipping movement of the cover plate at the ejection port.

[0051] 5. The present invention installs an air pressure sensor in the small sealed chamber to monitor the air pressure in the sealed chamber in real time and provide feedback to the console. In the non-shooting state, the console receives the feedback signal of the air pressure sensor, controls the external air source to fill the small sealed chamber with high-pressure gas through the air pipe, so that the air pressure in the sealed chamber is higher than the external water pressure and maintained in a constant range; when the artillery is firing, the console receives the feedback signal of the air pressure sensor in real time, controls the external air source to continuously fill the small sealed chamber with high-pressure gas through the air pipe, so that the air pressure in the sealed chamber is always higher than the external water pressure and maintains a constant pressure difference, thereby preventing water from entering the muzzle during the underwater artillery firing process.

[0052] 6. The present invention can discharge the excess gas in the small sealed chamber and the water that enters the small sealed chamber during the opening process of the cover plate of the bullet outlet by installing a one-way valve at the bottom of the small sealed chamber.

[0053] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0055] Figure 1 The underwater gun muzzle sealing device of the present invention is installed on the rear axle side of the gun barrel mouth

[0056] Figure 2 It is a schematic diagram of the rear axle side of the underwater gun muzzle sealing device of the present invention.

[0057] Figure 3 It is a schematic diagram of the front axle side of the underwater gun muzzle sealing device of the present invention.

[0058] Figure 4 It is a schematic diagram of the front axle side composed of a hidden front end plate, a cover plate and a sealing plate of the underwater gun muzzle sealing device of the present invention.

[0059] Figure 5 It is a cross-sectional view of the underwater gun muzzle sealing device of the present invention.

[0060] Figure 6 yes Figure 2 Schematic diagram of the front axle side of the cabin of the present invention.

[0061] Figure 7 yes Figure 2 Schematic diagram of the rear axle side of the cabin of the present invention.

[0062] Figure 8 yes Figure 2 Schematic diagram of the front axle side of the connecting sleeve of the present invention.

[0063] Fig. 9 yes Figure 2 Schematic diagram of the rear axle side of the connecting sleeve of the present invention.

[0064] Fig.10 yes Figure 2 Schematic diagram of the rear axle side of the rear end plate of the present invention.

[0065] Fig.11 yes Figure 3 Schematic diagram of the front axle side of the front end plate of the present invention.

[0066] Fig.12 yes Figure 3 Schematic diagram of the rear axle side of the rotating shaft of the present invention.

[0067] Fig.13 yes Figure 3 Schematic diagram of the rear axle side of the cover plate of the present invention.

[0068] Fig.14 yes Figure 4 Schematic diagram of the front axle side of the limit seat of the present invention.

[0069] Fig.15 yes Figure 3 Schematic diagram of the rear axle side of the bushing of the present invention.

[0070] Fig.16 yes Figure 3 Schematic diagram of the rear axle side of the limiting ring of the present invention.

[0071] Fig.17 yes Figure 3 Schematic diagram of the front shaft side of the clutch sleeve of the present invention.

[0072] Fig.18 yes Figure 3 Schematic diagram of the shaft of the invention.

[0073] Fig.19 yes Figure 3 Schematic diagram of the sealing plate of the present invention.

[0074] Fig. 20 yes Figure 3 Schematic diagram of the present invention.

[0075] Fig.21 yes Figure 3 Schematic diagram of the rear axle side of the drive shaft of the present invention.

[0076] In the figure, 1-underwater muzzle sealing device, 2-gun barrel, 3-eye screw, 4-cabin, 5-sealing pad, 6-connecting sleeve, 7-sealing sleeve, 8-rear end plate, 9-trachea, 10-motor cable, 11-signal cable, 12-sealing block, 13-pressing block, 14-pull rod, 15-front end plate, 16-rotating shaft, 17-cover plate, 18-touch switch, 19-air pressure sensor, 20-limit seat, 21-check valve, 22-shaft sleeve, 23-limiting ring, 24-spring, 25-motor, 26-clutch sleeve, 27-pin shaft, 28-sealing plate, 29-constraint sleeve, 30-drive shaft, 31-air pressure sensor mounting hole, 32-connecting sleeve mounting hole, 33-small sealing chamber, 34-check valve mounting hole, 35-large sealing chamber, 36-end face of large sealing chamber, 37-drive shaft mounting hole, 38-eye screw mounting hole, 39-pull rod mounting hole, 40-outside of cabin, 41-motor cabin, 42-front connecting shaft, 43-bullet hole, 44-front flange, 45-rear flange, 46-rear connecting shaft, 47-muzzle connecting hole, 48-rear connecting shaft mounting hole, 49-wire hole, 50-sleeve mounting hole, 51-bullet outlet, 52-rotating shaft cylinder, 53-rotating shaft disc, 54-rotating shaft clutch tooth, 55-limiting seat square platform, 56-limiting seat limiting groove, 57-limiting seat limiting tooth, 58-limiting block inclined surface, 59-limiting block boss, 60-clutch sleeve through hole, 61-clutch sleeve clutch tooth, 62-drive shaft spiral groove. DETAILED DESCRIPTION

[0077] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0079] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0080] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0081] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0082] The underwater muzzle sealing device proposed by the present invention includes a cabin 4, a connecting sleeve 6, a front end plate 15, a rear end plate 8, an air pipe 9, a signal cable, a cover plate 17, a clutch rotating assembly and a trigger assembly.

[0083] like Figure 8 and Fig. 9 As shown, one end of the connecting sleeve 6 has a front flange 44, a front connecting shaft 42 and a bullet hole 43, and the front connecting shaft 42 is used to dock with the connecting sleeve mounting hole 32 in the cabin 4; the other end of the connecting sleeve 6 has a rear flange 45, a rear connecting shaft 46, and a muzzle connecting hole 47, and the rear connecting shaft 46 is used to dock with the rear connecting shaft mounting hole 48 on the rear end plate 8.

[0084] like Figure 6 and Figure 7 As shown, the cabin body 4 includes a motor cabin 41 and a sealed chamber at one end of the motor cabin, and the sealed chamber is divided into a small sealed chamber 33 and a large sealed chamber 35 .

[0085] The motor 25 is installed in the motor compartment 41 , and the external control console controls the operation of the motor 25 through the motor cable 10 .

[0086] The small sealed chamber 33 has a connecting sleeve mounting hole 32 , a one-way valve mounting hole 34 , and an air pressure sensor mounting hole 31 .

[0087] The coupling sleeve mounting hole 32 is connected to the outside of the cabin body 4 and is used to dock with the coupling sleeve front coupling shaft 42 at one end of the coupling sleeve 6. The coupling sleeve front flange 44 at the same end of the coupling sleeve 6 fits against the outside 40 of the cabin body and is sealed by the sealing gasket 5.

[0088] The one-way valve installation hole 34 is located at the bottom of the small sealed chamber 33 and is connected to the large sealed chamber 35, and is used to install the one-way valve 21; the outlet end of the one-way valve 21 is connected to the outside at the bottom of the large sealed chamber 35, and is used to discharge excess gas in the small sealed chamber 33, and discharge water that enters the small sealed chamber 33 during the flipping process of the cover plate 17.

[0089] The air pressure sensor mounting hole 31 is located on the side wall of the small sealed chamber 33 and is used to install the air pressure sensor 19 to monitor the air pressure in the small sealed chamber 33 in real time. When the pressure is lower than the set value, a feedback signal will be sent to the external console, and the console will control the external air source to inflate the small sealed chamber 33 through the air pipe 9.

[0090] The large sealed chamber 35 has a drive shaft mounting hole 37 therein, and a clutch rotating assembly and a trigger assembly are installed in the large sealed chamber 35 .

[0091] The clutch rotating assembly includes a rotating shaft 16 , a limiting seat 20 , a shaft sleeve 22 , a limiting ring 23 , a spring 24 , a clutch sleeve 26 , a pin 27 , a restraining sleeve 29 and a driving shaft 30 .

[0092] like Fig.21 As shown, the center of the drive shaft 30 has a through hole with a keyway for coaxially fixed connection with the output shaft of the motor 25, and the drive shaft 30 can rotate synchronously with the output shaft of the motor 25. The outer cylinder of the drive shaft 30 has a pair of drive shaft spiral grooves 62 symmetrical to the drive shaft axis for matching with the pin 27.

[0093] like Fig.17 As shown, one end of the clutch sleeve 26 has a pair of clutch sleeve clutch teeth 61 symmetrical with respect to the clutch sleeve axis, and a pair of coaxial clutch sleeve through holes are provided on the side wall surface of the clutch sleeve for cooperating with the pin shaft 27 .

[0094] like Fig.14 As shown, one end of the limit seat 20 has a limit seat square platform 55, which is used to be connected to the end face 36 of the large sealing chamber by bolts; the other end of the limit seat 20 has a pair of limit seat limit teeth 57 symmetrical relative to the limit seat axis, and a pair of limit seat limit grooves 56 symmetrical relative to the limit seat axis are provided on the side wall surface of the limit seat, and the limit seat limit groove 56 is L-shaped, divided into two sections parallel to the limit seat axis and perpendicular to the limit seat axis.

[0095] like Fig.12 As shown, one end of the rotating shaft 16 has a rotating shaft disc 53 , and the rotating shaft disc 53 has a rotating shaft clutch tooth 54 .

[0096] like Fig.16 As shown, the side surface of the limit ring 23 has a limit ring inclined surface 58 and a limit ring boss 59, which are used to contact the trigger component to provide feedback on the rotation and axial movement position status of the shaft.

[0097] Reference Figure 4 , Figure 5 : The drive shaft 30 is installed on the drive shaft mounting hole 37 in the large sealing chamber 35 and is coaxially fixedly connected with the motor output shaft; the clutch sleeve 26 is sleeved on the outer cylinder of the drive shaft 30, and the clutch sleeve through hole on the clutch sleeve corresponds to the position of the spiral groove on the drive shaft; the limit seat 20 is sleeved on the outer cylinder of the clutch sleeve 26, the limit seat square platform 55 is connected to the end face 36 of the large sealing chamber by bolts, and the limit seat limit groove corresponds to the position of the clutch sleeve through hole; the pin 27 is installed in the limit seat limit groove, the clutch sleeve through hole, and the drive shaft spiral groove, and the constraint sleeve 29 is installed on the outer cylinder of the limit seat 20 to prevent the pin 27 from escaping from the limit seat limit groove 56, the clutch sleeve through hole 60, and the drive shaft spiral groove 62.

[0098] The drive shaft 30 is driven to rotate by the motor output shaft, and the drive shaft spiral groove and the limit seat limit groove are used to realize the axial movement of the driving clutch sleeve 26 and the rotation of the clutch sleeve 26.

[0099] The sealed chamber of the cabin 4 is sealed at the end face by the front end plate 15, and the front end plate 15 is connected to the front end face of the sealed chamber by bolts. Fig.11 As shown, the front end plate 15 has a bullet outlet 51 and a shaft sleeve mounting hole 50.

[0100] When the front end plate 15 is mounted on the cabin body 4, the bullet outlet 51 is coaxial with the connecting sleeve mounting hole 32 and the connecting sleeve bullet passing hole 43 on the connecting sleeve to form a bullet passing channel.

[0101] The shaft sleeve 22 is installed in the shaft sleeve mounting hole 50 of the front end plate 15; the middle section of the shaft cylinder 52 of the shaft 16 is installed in the shaft sleeve 22, and the shaft disk 53 of the shaft 16 faces the inside of the sealed cabin; a spring 24 is mounted on the shaft cylinder 52 between the shaft disk 53 and the shaft sleeve 22; a limit ring 23 is fixedly installed on the shaft disk 53, and the limit ring 23 can rotate and move axially synchronously with the shaft 16, and during the rotation and movement process, the boss 59 and the inclined surface 58 on the limit ring 23 can contact the trigger component to provide feedback on the rotation and axial movement position status of the shaft.

[0102] like Fig.13 As shown, the cover plate 17 has a countersunk hole and a connecting through hole, and a sealing plate 28 is installed in the countersunk hole. The rotating shaft 16 extends out of the outside of the front end plate 15 and is fixedly connected to the connecting through hole of the cover plate 17. When the rotating shaft rotates, it can drive the cover plate 17 to rotate, and the sealing plate 28 is used to cover the bullet outlet 51 of the front end plate 15 to achieve sealing of the bullet outlet.

[0103] The clutch sleeve 26 is driven to move axially and rotate via the spiral groove of the driving shaft and the limiting groove of the limiting seat, thereby driving the rotating shaft 16 to move axially and rotate, thereby realizing the opening and closing of the cover plate 17 of the bullet outlet 51 .

[0104] The rear end plate 8 is connected to the rear end face of the cabin 4 by bolts, the rear coupling shaft mounting hole 48 on the rear end plate is butted with the rear coupling shaft 46 of the coupling sleeve 5, and the cables and air pipes enter the cabin 4 through the wire holes 49, which are sealed by the sealing block 12. A tie rod 14 is provided between the cabin and the rear end plate to assist in connection.

[0105] The air pipe 9 is formed by bending a copper pipe, one section of which is located inside the cabin 4 and the other section is located outside the cabin 4; the air pipe inside the cabin enters the motor cabin 41, the large sealed chamber 35, and the small sealed chamber 33 in sequence through the wire hole 49 of the rear end plate, and is used to inflate the small sealed chamber 33; the air pipe 9 outside the cabin is connected to an external air source.

[0106] The number of the air pressure sensor 19 is one and is installed on the side wall of the small sealed chamber 33; it is used to monitor the small

[0107] When the air pressure in the sealed chamber 33 is lower than the set value, a feedback signal will be sent to the control console, and the control console controls the external air source to fill the small sealed chamber 33 with gas through the air pipe 9, so that the air pressure in the small sealed chamber 33 is maintained in a constant range.

[0108] There is one one-way valve 21, which is installed on the lower plane of the small sealed chamber 33 and passes through the lower plane of the large sealed chamber 355 to connect with the outside of the cabin 4; the one-way valve 21 is used to discharge excess gas in the small sealed chamber 33, and to discharge water that enters the small sealed chamber 33 when the cover plate 17 of the bullet outlet 51 is opened.

[0109] The installation steps of the device of the present invention are:

[0110] 1. Pass one end of the air pipe 9 through the wire hole 49 of the rear end plate, the motor compartment 41 of the cabin 4, and the large sealed chamber 35.

[0111] It is mounted on the side wall of the small sealed chamber 33, and the other end is connected to an external gas source;

[0112] 0 2. Connect one end of the motor cable 10 to the motor and pass it through the wire hole 49 of the rear plate to enter the motor compartment 41; connect one end of the signal cable 11 to the pressure sensor and the touch pressure switch 18 and pass it through the wire hole 49 of the rear plate and the motor compartment 41 to enter the large sealed chamber 35, and connect the other ends of the motor cable 10 and the signal cable 11 to the console;

[0113] 3. Install the drive shaft 30 in the motor compartment 41, install the motor 25, and connect the motor cable 10;

[0114] 4. Install the sealing gasket 5 and the connecting sleeve 6 on the outside of the cabin 40;

[0115] 5 5. Install the rear plate 8 on the rear end face of the cabin, connect the rear connecting shaft 46 of the connecting sleeve with the rear connecting shaft installation hole 48 of the rear plate

[0116] Docking, a sealing sleeve 7 is installed in the muzzle connection hole 47;

[0117] 6. Install the tie rod 14;

[0118] 7. Install the one-way valve 21 and the pressure sensor 19 in the small sealing chamber 33, and connect the pressure sensor control cable;

[0119] 8. Install the limit seat 20 and the clutch sleeve 26 in the large sealing chamber 35, rotate the limit seat to adjust the position of the limit seat limit groove 56, the clutch sleeve through hole 60, and the drive shaft spiral groove 62, and install the pin shaft 27;

[0120] 9. Install the touch pressure switch 18 and connect the touch pressure switch control cable;

[0121] 10. The front end plate 15 is provided with a shaft sleeve 22;

[0122] 11. Install the limiting ring 23 on the rotating shaft 16, put on the spring 24, and insert the rotating shaft 16 into the shaft sleeve 22;

[0123] 12. Install the front end plate 15 on the front end surface of the cabin body. When installing, adjust the position of the limit ring 23 so that when the cover plate is rotated into place, the touch switch can be reliably touched;

[0124] 13. Install the baffle 17 at the extended end of the rotating shaft outside the front end plate 15, and install the sealing plate 28 in the baffle countersunk hole before installation;

[0125] 14. Install eyebolts 3 on both sides of the cabin.

[0126] The use process of the underwater muzzle sealing device is as follows:

[0127] First, connect the gun barrel 2 to the connecting sleeve muzzle connecting hole 47, and connect the air pipe 9 to the external air source; when there is no combat mission, the control console receives the feedback signal of the air pressure sensor 19, controls the external air source to fill the small sealed chamber 33 with gas through the air pipe 9, so that the air pressure in the small sealed chamber 33 is higher than the external water pressure and maintained in a constant range.

[0128] When the gun performs a shooting task, the console controls the external gas source to continuously fill the small sealed chamber 33 with gas through the air pipe 9; at the same time, a rotation signal is sent to the motor 25, and the motor 25 rotates to drive the drive shaft 30 to rotate. The spiral groove 62 of the drive shaft pushes the pin 27 to move along the limit groove 56 on the limit seat, driving the clutch sleeve 26 to first move axially and then rotate around the axis; during the movement of the clutch sleeve, the clutch teeth 61 of the clutch sleeve engage with the clutch teeth 54 of the rotating shaft, pushing the rotating shaft to move axially and rotate, thereby driving the baffle 17 at the mouth of the bullet outlet 51 to open. The rotation of the rotating shaft also drives the limit ring 23 installed on the shaft to rotate. After the rotating shaft rotates to the right position, that is, after the baffle rotates away from the bullet outlet, the boss 59 on the limit ring contacts the contact switch 18, and the contact switch feeds back a "door open to the right position" signal to the console, stops the motor and connects the firing circuit, and the gun fires the projectile, and the projectile passes through the bullet passage.

[0129] After the artillery shooting is completed, the control console sends a reverse rotation signal to the motor 25. The motor 25 rotates to drive the drive shaft 30 to rotate. The drive shaft spiral groove 62 pushes the pin shaft 27 to move along the limit groove 56 on the limit seat, driving the clutch sleeve 26 to first rotate around the axis and then move axially. While the clutch sleeve 26 rotates around the axis, it drives the rotating shaft to rotate, thereby driving the baffle 17 to rotate to the mouth of the bullet discharge port. The clutch sleeve 26 moves axially, the clutch sleeve clutch teeth 61 disengage from the shaft clutch teeth 54, and the shaft moves axially under the action of the spring, and drives the baffle 17 to press the sealing plate 28 and the bullet outlet 51, and the bullet passage is closed; the rotation of the shaft drives the limit ring 23 installed on the shaft to rotate and move axially. After moving to the right position, the inclined surface 58 on the limit ring touches the contact switch 18, and the contact switch feeds back a "door closed" signal to the console, stops the motor and disconnects the firing circuit, and the artillery stops firing; the gas continuously replenished in the small sealed chamber 33 discharges the water entering the small sealed chamber 33 during the artillery firing process out of the cabin 4 through the one-way valve 21. After the drainage process takes the set time, the console controls the external air source to stop inflating the small sealed chamber 33, and the underwater muzzle sealing device completes a working process.

[0130] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. An underwater gun muzzle sealing device, characterized in that: It includes a cabin, a connecting sleeve, a front end plate, a rear end plate, an air pipe, a signal cable, a cover plate, a clutch rotating assembly and a trigger assembly; The coupling sleeve is used to cooperate with the external artillery barrel; The cabin body includes a motor cabin and a sealed chamber at one end of the motor cabin, and the sealed chamber is divided into a small sealed chamber and a large sealed chamber; The motor is installed in the motor cabin, and the external console controls the operation of the motor through a signal cable; The small sealed chamber is provided with a connecting sleeve mounting hole for sealingly connecting with the front end of the connecting sleeve; a one-way valve and an air pressure sensor are installed in the small sealed chamber; the air pressure sensor is used to monitor the air pressure in the small sealed chamber in real time and transmit the air pressure signal to the external control console; the external control console controls the external air source to fill the small sealed chamber with air through the air pipe, so that the air pressure in the small sealed chamber is maintained in a constant range; the one-way valve is used to discharge excess air in the small sealed chamber, and discharge water that enters the small sealed chamber when the cover is opened; The large sealed chamber is connected to the motor compartment through a drive shaft mounting hole; a clutch rotating assembly and a trigger assembly are installed in the large sealed chamber; The sealing chamber of the cabin body is sealed at the end face by the front end plate, and the front end plate is provided with a bullet outlet and a shaft sleeve mounting hole; when the front end plate is installed on the cabin body, the bullet outlet and the connecting sleeve mounting hole and the bullet passing hole in the connecting sleeve are coaxial to form a bullet passing channel; The motor cabin is sealed at the end face through the rear end plate, and the rear end plate is provided with a rear connecting shaft mounting hole and a wire passing hole; wherein the rear connecting shaft mounting hole is butted with the rear end of the connecting sleeve, and the signal cable and the air pipe enter the cabin through the wire passing hole and the wire passing hole is sealed by a sealing block; The clutch rotating assembly is driven by a motor and can drive the cover plate outside the front end plate to rotate, so as to achieve sealing covering or opening of the bullet outlet of the front end plate, and after covering or opening in place, a signal of reaching the position is sent through the trigger assembly.

2. The underwater gun muzzle sealing device according to claim 1, characterized in that: The front end of the connecting sleeve has a front flange, a front connecting shaft and a bullet hole, and the front connecting shaft is used to dock with the connecting sleeve mounting hole in the cabin; the rear end of the connecting sleeve has a rear flange, a rear connecting shaft, and a muzzle connecting hole, and the rear connecting shaft is used to dock with the rear connecting shaft mounting hole on the rear end plate.

3. The underwater gun muzzle sealing device according to claim 1, characterized in that: The clutch rotating assembly includes a rotating shaft, a limiting seat, a limiting ring, a clutch sleeve, a pin shaft, a restraining sleeve and a driving shaft; The center of the drive shaft has a through hole with a keyway for coaxially fixed connection with the motor output shaft, and the drive shaft can rotate synchronously with the motor output shaft; the outer cylinder of the drive shaft has a pair of drive shaft spiral grooves symmetrical to the drive shaft axis for matching with the pin shaft; One end of the clutch sleeve is provided with a pair of clutch sleeve clutch teeth symmetrical with respect to the clutch sleeve axis, and a pair of coaxial clutch sleeve through holes are provided on the side wall surface of the clutch sleeve for cooperating with the pin shaft; One end of the limit seat is provided with a limit seat square platform, which is used to be connected with the end face of the large sealing chamber by bolts; the other end of the limit seat is provided with a pair of limit seat limit teeth symmetrical with respect to the limit seat axis, and a pair of limit seat limit grooves symmetrical with respect to the limit seat axis are provided on the side wall surface of the limit seat, and the limit seat limit groove is L-shaped, and is divided into two sections parallel to the limit seat axis and perpendicular to the limit seat axis; One end of the rotating shaft is provided with a rotating shaft disc, and the rotating shaft disc is provided with a rotating shaft clutch tooth; The side surface of the limit ring is provided with a limit ring inclined surface and a limit ring boss, which are used to contact with the trigger assembly and provide feedback on the rotation and axial movement position state of the rotating shaft; The driving shaft is installed on the driving shaft mounting hole in the large sealing chamber and is coaxially fixedly connected with the motor output shaft; the clutch sleeve is sleeved on the outer cylinder of the driving shaft, and the clutch sleeve through hole on the clutch sleeve corresponds to the position of the spiral groove on the driving shaft; the limit seat is sleeved on the outer cylinder of the clutch sleeve, the limit seat square table is fixedly connected to the end face of the large sealing chamber, and the limit groove of the limit seat corresponds to the position of the clutch sleeve through hole; a pin is installed in the limit groove of the limit seat, the clutch sleeve through hole, and the spiral groove of the driving shaft, and a constraint sleeve is installed on the outer cylinder of the limit seat to prevent the pin from escaping from the limit groove of the limit seat, the clutch sleeve through hole, and the spiral groove of the driving shaft.

4. The underwater gun muzzle sealing device according to claim 3, characterized in that: The clutch rotating assembly also includes a sleeve and a spring; the sleeve is installed in the sleeve mounting hole of the front end plate; the middle section of the shaft cylinder is installed in the sleeve, and the shaft disk of the shaft faces the inside of the sealed cabin; a spring is mounted on the shaft cylinder between the shaft disk and the sleeve; a limit ring is fixedly installed on the shaft disk, the limit ring can rotate and move axially synchronously with the shaft, and during the rotation and movement process, the boss and inclined surface on the limit ring can contact the trigger assembly to provide feedback on the rotation and axial movement position status of the shaft.

5. The underwater gun muzzle sealing device according to claim 1, characterized in that: The cover plate is provided with a countersunk hole and a connecting through hole, and a sealing plate is installed in the countersunk hole; the rotating shaft extends outward from the outside of the front end plate and is fixedly connected to the connecting through hole of the cover plate; when the rotating shaft rotates, it can drive the cover plate to rotate, and the sealing plate is used to cover the bullet outlet of the front end plate to achieve sealing of the bullet outlet.

6. The underwater gun muzzle sealing device according to claim 1, characterized in that: A tie rod is also provided between the cabin and the rear end plate to achieve auxiliary connection.

7. The method for installing the underwater gun port sealing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Pass one end of the air pipe through the wire hole of the rear end plate, the motor compartment of the cabin, and the large sealed chamber, and install it on the side wall of the small sealed chamber. Connect the other end to the external air source. Step 2: Connect one end of the motor cable to the motor through the wire hole on the rear panel and into the motor compartment; connect one end of the signal cable to the pressure sensor and touch switch through the wire hole on the rear panel and the motor compartment and into the large sealed chamber, and connect the other end of the motor cable and signal cable to the console; Step 3: Install the drive shaft in the motor compartment, install the motor, and connect the motor cable; Step 4: Install the sealing gasket and the connecting sleeve outside the cabin; Step 5, install the rear end plate on the rear end face of the cabin body, connect the rear connecting shaft of the connecting sleeve with the rear connecting shaft mounting hole of the rear end plate, and install the sealing sleeve in the muzzle connecting hole; Step 6: Install the pull rod; Step 7: Install a one-way valve and a pressure sensor in the small sealed chamber, and connect the pressure sensor control cable; Step 8: Install the limit seat in the large sealed chamber, install the clutch sleeve, rotate the limit seat to adjust the position of the limit seat limit groove, the clutch sleeve through hole, and the drive shaft spiral groove, and install the pin shaft; Step 9: Install the touch switch and connect the touch switch control cable; Step 10: Install the shaft sleeve on the front end plate; Step 11, install the limiting ring on the shaft, put on the spring, and insert the shaft into the shaft sleeve; Step 12: Install the front end plate on the front end surface of the cabin body. During installation, adjust the position of the limit ring so that the touch switch can be reliably pressed when the cover plate is rotated into place. Step 13, install a baffle plate at the extended end of the rotating shaft outside the front end plate, and install a sealing plate in the baffle plate countersunk hole before installation; Step 14. Install the eyebolts on both sides of the cabin.

8. The method for using the underwater gun port sealing device according to any one of claims 1 to 6, characterized in that: The process includes: First, connect the gun barrel to the connecting hole of the connecting sleeve muzzle, and connect the air pipe to the external air source; when there is no combat mission, the control console receives the feedback signal of the air pressure sensor, controls the external air source to fill the small sealed chamber through the air pipe, so that the air pressure in the small sealed chamber is higher than the external water pressure and maintained in a constant range; When the artillery performs a shooting task, the control console controls the external air source to continuously fill the small sealed chamber with gas through the air pipe; at the same time, a rotation signal is sent to the motor, and the rotation of the motor drives the drive shaft to rotate. The spiral groove of the drive shaft drives the pin shaft to move along the limit groove on the limit seat, driving the clutch sleeve to first move axially and then rotate around the axis; during the movement of the clutch sleeve, the clutch teeth of the clutch sleeve engage with the clutch teeth of the rotating shaft, driving the rotating shaft to move axially and rotate, thereby driving the baffle at the mouth of the bullet outlet to open; the rotation of the rotating shaft also drives the limit ring installed on the shaft to rotate. After the rotating shaft rotates to the right position, that is, after the baffle rotates away from the bullet outlet, the boss on the limit ring touches the contact switch, and the contact switch feeds back a "door open to the right position" signal to the control console, stops the motor and connects the firing circuit, and the artillery fires the projectile, and the projectile passes through the bullet passage; After the artillery shooting is completed, the control console sends a reverse rotation signal to the motor, the motor rotation drives the drive shaft to rotate, the drive shaft spiral groove pushes the pin shaft to move along the limit groove on the limit seat, and drives the clutch sleeve to rotate around the axis first, and then to move axially; while the clutch sleeve rotates around the axis, it drives the shaft to rotate, thereby driving the baffle to rotate to the mouth of the bullet discharge port; the clutch sleeve moves axially, the clutch teeth of the clutch sleeve disengage from the clutch teeth of the shaft, and the shaft moves axially under the action of the spring, and drives the baffle to press the sealing plate and the bullet discharge port tightly, passing the bullet channel. Close; the rotation of the shaft drives the limit ring installed on the shaft to rotate and move axially. After moving to the right position, the inclined surface on the limit ring touches the contact switch, and the contact switch feeds back the "door closed to the right position" signal to the console, stopping the motor and disconnecting the firing circuit, and the gun stops firing; the gas continuously replenished in the small sealed chamber discharges the water that enters the small sealed chamber during the gun firing process out of the cabin through the one-way valve. After the drainage process takes the set time, the console controls the external gas source to stop inflating the small sealed chamber, and the underwater muzzle sealing device completes a working process.

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