Fixed cartridge case suitable for weapon without sitting force

Abstract

The utility model discloses a fixed cartridge case suitable for a sitting force-free weapon, and relates to the technical field of ammunition. Compared with a conventional cartridge case of the same type, the cartridge case not only provides a single charging space, but also is additionally provided with an information acquisition hole, and the initial speed of a projectile at a weapon opening can be estimated by acquiring the temperature of propellant powder so as to accurately strike a target. In addition to a single charging structure, the arrangement of the tapered section and the throat on the cartridge facilitates the design of the launcher. In the ignition mode, ignition is carried out in the mode that the side edge mechanically impacts the primer, and therefore the blocking piece can be smoothly sprayed out. The cartridge case not only solves the problem of collecting the temperature of the non-sitting force weapon, but also simplifies the structure of the non-sitting force weapon, so that the non-sitting force weapon is lighter.

Description

Technical Field

[0001] The utility model relates to the technical field of ammunition, in particular to a fixed cartridge suitable for recoilless weapons. Background Art

[0002] Fixed-load cartridge is a charging method that combines the projectile and the charge cartridge into a whole. When firing, the whole-load shell is loaded into the barrel at one time, so the firing speed is faster, and it has the following main characteristics:

[0003] Fast loading: Since the projectile and the charge are already combined, the loading speed of the fixed shell is high;

[0004] Direct aim and direct fire: mostly used to aim directly at the target and shoot, without adjusting the charge number to hit different trajectories;

[0005] Scope of application: Small-caliber automatic guns, anti-tank guns, tank guns, and small and medium-caliber naval guns often use fixed cartridges.

[0006] The existing fixed cartridge is mainly designed for closed-bore guns, with the primer placed at the bottom, without a plug, a tapered section, or an information collection hole, and cannot meet the requirements of lightweight and precise strikes for recoilless weapons. When shooting a projectile, the shooter can only calculate the firing table based on the local ambient temperature, resulting in poor shooting accuracy. Therefore, it is necessary to redesign the fixed cartridge for recoilless weapons. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a fixed-type cartridge suitable for recoilless weapons, which solves the problem that the current cartridges cannot meet the requirements of temperature collection and lightweight of recoilless weapons.

[0008] The utility model adopts the following specific technical solutions:

[0009] A fixed cartridge suitable for a recoilless weapon, the fixed cartridge comprising a barrel, a limiting member and a blocking piece;

[0010] The barrel is provided with a bullet extraction matching area, an information collection hole, an information collection module installation groove, a tapered section, a throat, a cartridge positioning groove, a primer installation threaded hole and a straight section; the bullet extraction matching area is located at the front end of the barrel, and is used to cooperate with the projectile; the cartridge positioning groove is arranged on the outer peripheral side of the rear end of the barrel, and is used to realize the installation and positioning of the cartridge with the snap fit of the recoilless weapon; along the direction from the front end to the rear end of the barrel, the barrel is provided with the tapered section, the throat and the straight section connected in sequence on the inner wall of the rear end; the tapered section, the throat and the expansion section at the tail of the recoilless weapon constitute a Laval nozzle structure; the information collection hole and the primer installation threaded hole are arranged on the tapered section; the information collection hole is used to install a sensor for collecting the propellant temperature; the primer installation threaded hole is used to install the primer;

[0011] The diameter of the plug is greater than the diameter of the throat;

[0012] The blocking piece and the limiting member are both placed in the straight section, and the limiting member is detachably connected to the straight section, so that the blocking piece is sealed and pressed against the throat.

[0013] Furthermore, it also includes an information collection module;

[0014] The information collection module installation slot is provided between the rear end of the cylinder and the information collection hole;

[0015] The information acquisition module is installed in the information acquisition module installation slot, and is used to connect with the sensor and the information interface of the recoilless weapon.

[0016] Furthermore, the information acquisition module includes a housing, contacts and a cable protection shell;

[0017] The housing matches the information acquisition module installation slot in shape;

[0018] The cable protection shell is provided with a cable groove for passing a cable, and the cable is connected between the sensor and the contact;

[0019] The contact is mounted on the housing and is used to connect to the information interface of the recoilless weapon.

[0020] Furthermore, the rear end of the cylinder is provided with an annular flange;

[0021] The cartridge positioning groove is arranged on the outer peripheral side of the annular flange.

[0022] Furthermore, the limiting member is threadedly connected to the straight section.

[0023] Furthermore, the limiting member is a circular ring with threads on the outer circumference.

[0024] Furthermore, along the direction from the front end to the rear end of the cylinder, the diameter of the tapered section gradually decreases;

[0025] The diameter of the tapered section toward one end of the throat is the same as the diameter of the throat;

[0026] The diameter of the throat is smaller than the diameter of the straight section.

[0027] Beneficial effects:

[0028] 1. The fixed cartridge of the utility model is provided with an information collection hole on the barrel, through which a sensor for collecting the temperature of the propellant can be installed. By detecting the temperature of the propellant in the cartridge, it is convenient to estimate the muzzle velocity and improve the shooting accuracy. In the direction from the front end to the rear end of the barrel, the tapered section, the throat and the expansion section at the tail of the recoilless weapon arranged on the inner wall of the barrel at the rear end constitute a Laval nozzle structure. The recoilless weapon requires gas to pass through the Laval nozzle structure to form a thrust to offset the recoil of the projectile, so as to achieve the force balance of recoilless weapons such as recoilless guns. The tapered section and the throat required by the recoilless weapon are integrated in the barrel. By integrating the tapered section and the throat on the barrel, the weight of the weapon can be reduced as much as possible while meeting the functional requirements, so that the design of the recoilless weapon is lighter and meets the requirements of lightweight recoilless weapons. The tapered section at the rear end of the barrel is provided with a primer installation threaded hole for installing the primer. In terms of the ignition method, the fixed cartridge adopts the side bottom mechanical impact primer method for ignition, so that the plug can be ejected smoothly.

[0029] 2. The fixed cartridge of the utility model also includes an information collection module installed between the rear end of the cartridge body and the information collection hole. The information collection module is used to connect with the sensor and the information interface of the recoilless weapon. The contacts on the shell are connected with the information interface of the recoilless weapon, so that the speed of the projectile when it moves to the muzzle is calculated through the external intelligent fire control system, and the initial value of the external ballistic calculation is provided to accurately hit the target.

[0030] 3. The fixed-type cartridge of the utility model has a blocking piece installed in the rear end of the cartridge body through a limiting member, thereby achieving the airtightness requirement of the cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a cross-sectional structural schematic diagram of the fixed-installation cartridge of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the cylinder;

[0033] Figure 3 It is a structural diagram of the information collection module.

[0034] Among them, 1-cylinder, 2-information collection module, 3-limiting piece, 4-blocking piece, 101-bullet extraction matching area, 102-information collection hole, 103-information collection module installation slot, 104-tapered section, 105-throat, 106-cartridge positioning slot, 107-primer installation threaded hole, 108-straight section, 109-annular flange, 201-shell, 202-contact, 203-cable slot, 204-cable protective shell. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1 As shown in the structure, this embodiment provides a fixed cartridge suitable for recoilless weapons, the fixed cartridge comprising a barrel 1, a stopper 3, a blocking piece 4 and an information collection module 2;

[0037] like Figure 2 As shown in the structure, the barrel 1 is provided with a bullet extraction matching area 101, an information collection hole 102, an information collection module installation groove 103, a tapered section 104, a throat 105, a cartridge positioning groove 106, a primer installation threaded hole 107 and a straight section 108; the bullet extraction matching area 101 is located at the front end of the barrel 1, and is used to cooperate with the projectile; the cartridge positioning groove 106 is provided on the outer peripheral side of the rear end of the barrel 1, and is used to cooperate with the buckle of the recoilless weapon to realize the installation and positioning of the cartridge; along the direction from the front end to the rear end of the barrel 1, the barrel 1 is inside the rear end The wall is provided with a tapered section 104, a throat 105 and a straight section 108 connected in sequence; the tapered section 104, the throat 105 and the expansion section at the tail of the recoilless weapon constitute a Laval nozzle structure; along the direction from the front end to the rear end of the barrel 1, the diameter of the tapered section 104 gradually decreases; the diameter of the end of the tapered section 104 facing the throat 105 is the same as the diameter of the throat 105; the diameter of the throat 105 is smaller than the diameter of the straight section 108; an information acquisition module installation groove 103 is provided between the rear end of the barrel 1 and the information acquisition hole 102;

[0038] The information collection hole 102 and the primer installation threaded hole 107 are arranged in the tapered section 104; the information collection hole 102 is used to install a sensor for collecting the propellant temperature, and the data line connected to the sensor passes through the barrel 1; the primer installation threaded hole 107 is used to install the primer, and the primer is installed in the primer installation threaded hole 107 through threads;

[0039] The plugging piece 4 is a circular plate, and its diameter is larger than the diameter of the throat 105; the plugging piece 4 and the stopper 3 are both placed in the straight section 108, and the stopper 3 is detachably connected to the straight section 108, and the plugging piece 4 is sealed and pressed against the throat 105. The stopper 3 and the straight section 108 are threadedly connected; the stopper 3 is a circular ring with an external thread on the outer circumference, and the straight section 108 is provided with an internal thread, and the external thread of the circular ring is threadedly connected with the internal thread of the straight section 108.

[0040] The information acquisition module 2 is installed in the information acquisition module installation slot 103, and is used to connect with the information interface of the sensor and the recoilless weapon; Figure 3 As shown in the structure, the information acquisition module 2 includes a shell 201, a contact 202 and a cable protection shell 204; the shell 201 matches the information acquisition module installation slot 103 in shape; the cable protection shell 204 is provided with a cable slot 203 for passing the cable, and the cable is connected between the sensor and the contact 202; the contact 202 is installed on the shell 201, and is used to connect with the information interface of the recoilless weapon. The information collection hole 102 allows the sensor data line that collects the propellant information to pass through, and then the data line is connected to the contact 202 on the shell 201 through the cable slot 203 under the cable protection shell 204. The contact 202 matches the information interface on the recoilless weapon, and the external intelligent fire control system calculates the speed of the projectile when it moves to the muzzle, and provides the initial value of the external ballistic calculation, so as to accurately hit the target;

[0041] like Figure 1 and Figure 2 As shown, the barrel 1 is further provided with an annular flange 109 at the rear end, and the cartridge positioning groove 106 is provided on the outer peripheral side of the annular flange 109 .

[0042] The fixed cartridge is provided with an information collection hole 102 on the barrel 1, and a sensor for collecting the temperature of the propellant can be installed through the information collection hole 102. By detecting the temperature of the propellant in the cartridge, it is convenient to estimate the muzzle velocity and improve the shooting accuracy; along the direction from the front end to the rear end of the barrel 1, the tapered section 104, the throat 105 and the expansion section at the rear end of the recoilless weapon formed by the barrel 1 on the inner wall of the rear end constitute a Laval nozzle structure. The recoilless weapon requires gas to pass through the Laval nozzle structure to form a thrust to offset the recoil of the projectile, so as to realize a recoilless gun and the like. The force balance of the recoil weapon is achieved by integrating the tapered section 104 and the throat 105 required for the recoilless weapon in the barrel 1. By integrating the tapered section 104 and the throat 105 on the barrel 1, the weight of the weapon can be reduced as much as possible while meeting the functional requirements, making the design of the recoilless weapon lighter and meeting the requirements for lightweight recoilless weapons. The tapered section 104 at the rear end of the barrel 1 is provided with a primer mounting threaded hole 107 for mounting the primer. In terms of ignition method, the fixed cartridge is ignited by mechanically impacting the primer with the side bottom, so that the plug 4 can be ejected smoothly.

[0043] The fixed cartridge also includes an information collection module 2 installed between the rear end of the barrel 1 and the information collection hole 102. The information collection module 2 is used to connect with the sensor and the information interface of the recoilless weapon. The contact 202 on the shell 201 is connected with the information interface of the recoilless weapon, so that the speed of the projectile when it moves to the muzzle is calculated through the external intelligent fire control system, and the initial value of the external ballistic calculation is provided to accurately hit the target.

[0044] The fixed-type cartridge has a blocking piece 4 installed in the rear end of the cylinder body 1 through a limiting member 3, thereby achieving the airtightness requirement of the cartridge.

[0045] Unlike previous cartridges of the same type, the above-mentioned cartridge is suitable for recoilless weapons. In addition to providing a single charge space in the barrel 1, an information collection hole 102 is also provided. The charge temperature can be collected through the information collection hole 102, and the initial velocity of the projectile at the weapon mouth can be estimated so as to accurately hit the target. Structurally, in addition to the single charge structure, the tapered section 104 and the throat 105 constituting the Laval nozzle structure are placed on the cartridge to facilitate the design of the launcher. In terms of ignition method, ignition is performed by mechanically impacting the primer from the side, so that the plug 4 can be ejected smoothly. The fixed-mounted cartridge of the utility model not only solves the problem of charge temperature collection of recoilless weapons, but also simplifies the structure of recoilless weapons, making the recoilless weapons more portable.

[0046] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fixed cartridge suitable for a recoilless weapon, characterized in that: It includes a cylinder, a limiter and a blocking piece; The barrel is provided with a bullet extraction matching area, an information collection hole, an information collection module installation groove, a tapered section, a throat, a cartridge positioning groove, a primer installation threaded hole and a straight section; the bullet extraction matching area is located at the front end of the barrel, and is used to cooperate with the projectile; the cartridge positioning groove is arranged on the outer peripheral side of the rear end of the barrel, and is used to realize the installation and positioning of the cartridge with the snap fit of the recoilless weapon; along the direction from the front end to the rear end of the barrel, the barrel is provided with the tapered section, the throat and the straight section connected in sequence on the inner wall of the rear end; the tapered section, the throat and the expansion section at the tail of the recoilless weapon constitute a Laval nozzle structure; the information collection hole and the primer installation threaded hole are arranged on the tapered section; the information collection hole is used to install a sensor for collecting the propellant temperature; the primer installation threaded hole is used to install the primer; The diameter of the plugging piece is larger than the diameter of the throat; the plugging piece and the limiting member are both placed in the straight section, and the limiting member is detachably connected to the straight section, so that the plugging piece is sealed and pressed against the throat.

2. The fixed-pack cartridge according to claim 1, characterized in that: It also includes an information collection module; The information collection module installation slot is provided between the rear end of the cylinder and the information collection hole; The information acquisition module is installed in the information acquisition module installation slot, and is used to connect with the sensor and the information interface of the recoilless weapon.

3. The fixed-pack cartridge according to claim 2, characterized in that: The information acquisition module includes a housing, contacts and a cable protection shell; The housing matches the information acquisition module installation slot in shape; The cable protection shell is provided with a cable groove for passing a cable, and the cable is connected between the sensor and the contact; The contact is mounted on the housing and is used to connect to the information interface of the recoilless weapon.

4. The fixed-pack cartridge according to claim 1, characterized in that: The rear end of the cylinder is provided with an annular flange; The cartridge positioning groove is arranged on the outer peripheral side of the annular flange.

5. The fixed-pack cartridge according to claim 1, characterized in that: The limiting member is threadedly connected to the straight section.

6. The fixed-pack cartridge according to claim 5, characterized in that: The limiting member is a circular ring with threads arranged on the outer peripheral surface.

7. The fixed-packed cartridge according to any one of claims 1 to 6, characterized in that: The diameter of the tapered section gradually decreases along the direction from the front end to the rear end of the cylinder; The diameter of the tapered section toward one end of the throat is the same as the diameter of the throat; The diameter of the throat is smaller than the diameter of the straight section.

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