A shell ejection structure for a recoilless gun

Abstract

The present invention is a mechanical automatic shell extraction structure for a recoilless gun, which can be used on a recoilless gun launcher and belongs to a shell extraction structure for a recoilless gun. A shell extraction structure for a recoilless gun includes an extraction hook, a fixing screw, a spring, and a latch shaft; the extraction hook is a stepped shaft structure, with an inclined surface provided on the end face of the large diameter section and a positioning guide groove provided on the side face of the large diameter section; the extraction hook is inserted into the latch shaft and is inserted into the positioning guide groove from the outside of the latch shaft by a fixing screw; the spring is sleeved on the small diameter section and is used to prevent the extraction hook from interfering with the locking when the ammunition is loaded and locked. The shell extraction structure of the present invention has a simple overall structure and is safe to use. During operation, it can realize automatic mechanical shell extraction.

Description

Technical Field

[0001] The invention belongs to a shell ejection structure for a recoilless gun, which is a mechanical automatic shell ejection structure for a recoilless gun and can be used on a recoilless gun launching device. Background Art

[0002] After a recoilless rifle fires a projectile, the shell deforms due to heat and pressure, causing it to adhere to the barrel. This makes it difficult to remove the shell, hindering the next round of ammunition and affecting the gun's firepower. Traditionally, extracting the shell manually involves using other mechanisms or components. This method increases the number of steps required by the shooter, prolongs the time it takes to fire the round, and reduces firepower during combat. Summary of the Invention

[0003] The purpose of the present invention is to provide a shell ejection structure for a recoilless gun.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A shell extraction structure for a recoilless gun comprises an extractor hook, a fixing screw, a spring and a latch shaft; the extractor hook is a stepped shaft structure, with an inclined surface provided on the end face of a large-diameter section and a positioning guide groove provided on the side face of the large-diameter section; the extractor hook is inserted into the latch shaft, and the fixing screw is inserted into the positioning guide groove from the outside of the latch shaft; the spring is sleeved on the small-diameter section and is used to prevent the extractor hook from interfering with the locking when ammunition is loaded and locked.

[0006] A further improvement of the technical solution of the present invention is that the latch shaft is provided with a threaded hole connected to the latch body component and a stepped mounting hole for inserting the extractor hook.

[0007] A further improvement of the technical solution of the present invention is that the shell extraction hook is inserted into the stepped mounting hole, and both ends of the spring are respectively in contact with the end face of the large diameter end of the shell extraction hook and the end face at the step boundary of the stepped mounting hole.

[0008] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0009] The shell ejection mechanism can not only realize automatic shell ejection during the bolt opening process, but also reduce the number of operation steps and improve combat efficiency. In addition, the structure connects the bolt body component and the breech component into a whole through the bolt shaft (3). The shell ejection mechanism has high functional reliability and simple structure and process. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the shell ejection mechanism of the present invention;

[0011] Figure 2 This is a schematic diagram of the installation of the shell ejection mechanism of the present invention;

[0012] Among them, 1. Shell ejector hook, 1-1. Inclined surface, 1-2. Positioning guide groove, 2. Fixing screw, 3. Latch shaft, 4. Spring, 5. Latch body component, 6. Projectile casing, 7. Shell ejection mechanism, 8. Breech. DETAILED DESCRIPTION

[0013] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0014] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0016] The present invention relates to a shell ejection structure for a recoilless gun, which is installed on the recoilless gun and is used for ejecting shells.

[0017] like Figure 1 As shown, the shell extraction mechanism includes an extraction hook 1, a fixing screw 2, a spring 4, and a latch shaft 3. The extraction hook 1 is a stepped shaft structure with a large diameter section and a small diameter section. The end face of the large diameter section is provided with a deflection surface 1-1, and the side face of the large diameter section is provided with a positioning guide groove 1-2.

[0018] The latch shaft 3 is used to mount the extractor 1 and secure the ejection mechanism to the latch body. When the latch is opened, the extractor 1 rotates, extracting the shell and withdrawing the projectile casing 6 from the chamber. The extractor 1 is inserted into the latch shaft 3, with a set screw inserted from the outside of the latch shaft 3 into the positioning and guide grooves 1-2 to position and guide the extractor 1. A spring 4 is mounted on the smaller diameter section to prevent the extractor from interfering with the locking mechanism when the ammunition is loaded and locked.

[0019] In the specific implementation, Figure 1As shown, the latch shaft 3 is provided with a threaded hole for connection to the latch body 1 and a stepped mounting hole for inserting the extractor hook. Furthermore, the extractor hook 1 is inserted into the stepped mounting hole, and the ends of the spring 4 respectively contact the end surface of the large-diameter end of the extractor hook 1 and the end surface at the step boundary of the stepped mounting hole. Figure 1 The spring is only partially drawn.

[0020] After the shell ejection mechanism is assembled, Figure 2 The installation position shown in the figure is fixed. After the recoilless gun fires a projectile, the projectile casing 6 is in contact with the barrel. At this time, the bolt body assembly is rotated counterclockwise, and the ejector mechanism 7 rotates along with the bolt body assembly 5. The extractor hook 1 hooks the projectile casing 6 into contact and presses it. During the rotation of the ejector mechanism, it moves backward, causing the projectile casing 6 to be pulled out of the barrel; during this process, the deflected surface of the extractor hook 1 contacts the projectile casing. Furthermore, when loading the next round of ammunition, the bolt body assembly is rotated clockwise, and the inclined guide surface of the extractor hook 1 contacts the projectile casing. Driven by the rotational force, the extractor hook 1 moves downward, ensuring that the recoilless gun bolt is locked in place.

[0021] The shell ejection structure of the present invention has a simple overall structure and is safe to use, and can realize automatic mechanical shell ejection during operation.

[0022] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A shell ejection structure for a recoilless gun, characterized by: The invention comprises a shell extractor hook (1), a fixing screw (2), a spring (4) and a latch shaft (3); the shell extractor hook (1) is a stepped shaft structure, a deflection surface (1-1) is provided on the end face of the large diameter section, and a positioning guide groove (1-2) is provided on the side face of the large diameter section; the shell extractor hook (1) is inserted into the latch shaft (3), and the fixing screw is inserted into the positioning guide groove (1-2) from the outside of the latch shaft (3); the spring (4) is sleeved on the small diameter section and is used to prevent the shell extractor hook from interfering with the locking when the ammunition is loaded and locked; the latch shaft (3) is provided with a threaded hole connected to the latch body component and a stepped mounting hole for inserting the shell extractor hook; the shell extractor hook (1) is inserted into the stepped mounting hole, and the two ends of the spring (4) are respectively connected with the end face of the large diameter end of the shell extractor hook (1) and the end face at the step boundary of the stepped mounting hole.

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