Broken shell taking-out tool

Abstract

The utility model discloses a broken shell taking-out tool which is simple in structure and convenient and reliable to use. Comprising a front sheller section and a rear sheller section, the front sheller section comprises a hook tooth section and a conical section, the conical section is provided with a front section and a rear section, the front section of the hook tooth section and the front section of the conical section are of a hollow structure, a plurality of longitudinal grooves are evenly formed in the hook tooth section and the conical section, so that the front section of the hook tooth section and the front section of the conical section form an elastic expansion claw structure, and the outer diameter of the hook tooth section is larger than that of a corresponding broken shell. The front end of the hollow hook tooth section is provided with a front lead-in arc, the outer diameter of the hook tooth section is larger than that of the conical section, and the rear section of the conical section is provided with an internal thread; the shell taking device rear section comprises an external thread section, a first cylindrical section and a second cylindrical section which are sequentially arranged in the axial direction, the external thread section is fixed to the internal threads, the diameter of the second cylindrical section is larger than that of the first cylindrical section, and an automatic machine shell pulling hook guiding-in arc is arranged on the rear section of the second cylindrical section.

Description

Technical Field

[0001] The utility model relates to the technical field of guns and cannons, in particular to a broken shell removal tool. Background Art

[0002] Bullets and artillery shells generally consist of four parts: the case, the bullet, the propellant, and the primer. The front of the case connects to the bullet, the rear holds the primer, and the propellant is placed in the hollow space between the case, the bullet, and the primer. During normal use (when not firing), the case connects the bullet, loads the propellant, and forms the bullet or shell. When the shell enters the barrel (when firing), the firing pin strikes the primer, which burns and ignites the propellant. The burning propellant generates high-temperature, high-pressure gases that propel the bullet out of the case, into the barrel, and out. As the high-temperature, high-pressure gases generated by the burning propellant propel the bullet out of the case and into the barrel, the case fits tightly against the barrel, sealing off the high-temperature, high-pressure gases from the propellant and escaping from the rear, potentially endangering the shooter and the gun. After the bullet exits the barrel, the case is extracted by the extractor on the automatic mechanism and discarded, preparing for the next round to be fired. When the extractor pulls the cartridge case from the chamber of a gun's automatic mechanism, the case, firstly, expands and deforms elastically and plastically under the high pressure of the projectile, squeezing the barrel and chamber. Once the bullet exits the barrel, the pressure decreases, causing the barrel and chamber to recover and shrink, squeezing the case. Secondly, the high temperature of firing causes the case to fit more tightly and securely within the chamber. Thirdly, the case's inherent tensile strength is insufficient. Fourthly, the high-speed extraction process of the automatic mechanism can cause the case to break during extraction, leaving a portion of the case in the chamber, preventing the next round from entering and causing a firing malfunction. Because the broken case fits tightly and securely within the barrel and chamber, its walls are thin, and it breaks off in the front-center of the chamber, it is unsightly, difficult to grasp, and difficult to remove. Improper removal can damage the chamber, rendering the gun useless. Sometimes, recovering a complete, undamaged case is necessary to identify the cause of the breakage and facilitate analysis.

[0003] There are no special tools available now. Either a cleaning rod (rod) is used to poke the muzzle of a gun or a cannon, because the barrel of the gun is long and the wall of the shell mouth is very thin, and the broken shell is very tightly attached to the chamber and is not easy to poke out. Alternatively, a threaded tapping tool is used to enter the chamber, tap (embed) the broken shell and then pull it out. This requires high operating skills and is inconvenient to use. The tapping tool may damage the chamber and destroy the broken shell. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a broken shell removal tool with a simple structure, convenient operation and reliability.

[0005] The purpose of this utility model is achieved in this way:

[0006] A broken shell removal tool, comprising a shell removal front section (1) and a shell removal rear section (2).

[0007] The front section (1) of the shell extractor comprises a hook tooth section (11) and a conical section (13). The conical section (13) has a front section and a rear section. The front sections of the hook tooth section (11) and the conical section (13) are hollow structures. A plurality of longitudinal grooves (14) are evenly formed on the hook tooth section (11) and the conical section (13). The number of longitudinal grooves (14) is determined according to the size of the gun shell and the elasticity, so that the front sections of the hook tooth section (11) and the conical section (13) form an elastic expansion claw structure. The outer diameter of the hook tooth section (11) is larger than the corresponding broken shell. The outer diameter of the hook tooth section (11) is greater than the outer diameter of the conical section (13), and the front end of the hollow hook tooth section (11) is provided with a front introduction arc (111). The front introduction arc (111) is used to cooperate with the broken shell to shrink the expansion claw structure. The outer diameter of the hook tooth section (11) is greater than the outer diameter of the conical section (13), so that a limiting step is formed between the rear end of the hook tooth section (11) and the conical section (13). The limiting step is used to cooperate with the front end surface of the broken shell to limit the position. The rear section of the conical section (13) is provided with an internal thread (131). The internal thread (131) is used to connect the rear section (2) of the shell remover or a hand-pulling tool.

[0008] The shell extractor rear section (2) comprises an external thread section (21), a first cylindrical section (22) and a second cylindrical section (23) arranged in sequence along the axial direction. The external thread section (21) is used to be threadedly matched with the internal thread (131) for fixation. The first cylindrical section is a transition section. The diameter of the first cylindrical section (22) is equal to the outer diameter of the rear end of the conical section (13). The diameter of the second cylindrical section (23) is larger than the diameter of the first cylindrical section (22), so that a clamping step is formed between the front end of the second cylindrical section (23) and the first cylindrical section (22). The rear section of the second cylindrical section (23) is provided with an automatic shell extractor hook introduction arc (231), and the clamping step is used to be hooked with the automatic shell extractor hook.

[0009] Preferably, the taper of the conical section (13) is consistent with the taper of the corresponding chamber.

[0010] Preferably, a degassing groove (12) is provided at the front end of the conical section (13).

[0011] Preferably, a firing pin clearance hole (232) is provided on the rear end surface of the second cylindrical section (23).

[0012] Preferably, the diameter of the second cylindrical section (23) is equal to the diameter of the bottom edge of the corresponding cartridge case, and the axial length of the second cylindrical section (23) is equal to the axial length of the bottom edge of the rear section of the corresponding cartridge case.

[0013] Due to the adoption of the above technical solution, the utility model does not require high operating skills, can conveniently and simply remove the broken shell, does not destroy the broken shell, and will not cause damage to the chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the front structure of the shell extractor;

[0016] Figure 3 It is a schematic diagram of the rear structure of the shell extractor.

[0017] Reference numerals

[0018] In the accompanying drawings, 1 is the front section of the shell extractor, 2 is the rear section of the shell extractor, 11 is the hook tooth section, 111 is the front guide arc, 12 is the degassing groove, 13 is the conical section, 131 is the internal thread, 14 is the longitudinal groove, 21 is the external thread section, 22 is the first cylindrical section, 23 is the second cylindrical section, 231 is the shell extractor hook guide arc, and 232 is the firing pin clearance hole. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0020] See also Figure 1-Figure 3 An embodiment of a broken shell removal tool comprises a shell remover front section (1) and a shell remover rear section (2), wherein the shell remover front section (1) comprises a hook tooth section (11) and a cone section (13), wherein the cone section (13) has a front section and a rear section, wherein the hook tooth section (11) and the cone section (13) front section are hollow structures, and the hook tooth section (11) and the cone section (13) are uniformly provided with a plurality of longitudinal grooves (14), wherein the number of the longitudinal grooves (14) is determined according to the size of the gun shell and the elasticity, so that the hook tooth section (11) and the cone section (13) front section form an elastic expansion claw structure. The outer diameter of the hook tooth section (11) is larger than the outer diameter of the corresponding broken shell, and the front end of the hollow hook tooth section (11) is provided with a front introduction arc (111), and the front introduction arc (111) is used to cooperate with the broken shell to shrink the expansion claw structure. The outer diameter of the hook tooth section (11) is larger than the outer diameter of the conical section (13), so that a limiting step is formed between the rear end of the hook tooth section (11) and the conical section (13), and the limiting step is used to cooperate with the front end surface of the broken shell to limit the position. The rear section of the conical section (13) is provided with an internal thread (131), and the internal thread (131) is used to connect the rear section (2) of the shell remover or a hand-pulling tool.

[0021] The shell extractor rear section (2) comprises an external thread section (21), a first cylindrical section (22) and a second cylindrical section (23) arranged in sequence along the axial direction. The external thread section (21) is used to be threadedly matched with the internal thread (131) for fixation. The first cylindrical section is a transition section. The diameter of the first cylindrical section (22) is equal to the outer diameter of the rear end of the conical section (13). The diameter of the second cylindrical section (23) is larger than the diameter of the first cylindrical section (22), so that a clamping step is formed between the front end of the second cylindrical section (23) and the first cylindrical section (22). The rear section of the second cylindrical section (23) is provided with an automatic shell extractor hook introduction arc (231), and the clamping step is used to be hooked with the automatic shell extractor hook.

[0022] Specifically:

[0023] The front section (1) of the shell extractor includes a hollow hook tooth section (11), a front guide arc (111) of the hollow hook tooth section (11), a degassing groove (12), a hollow conical section (13), an internal thread (131) at the hollow portion of the rear section of the hollow conical section (13), and longitudinal grooves (14) are provided in the hollow hook tooth section and the hollow conical section to make them elastic. The diameter of the hollow hook tooth section (11) should be larger than the diameter of the mouth of the gun shell to be extracted, the taper of the hollow conical section (13) should be basically consistent with the taper of the gun barrel chamber, and the inner diameter of the internal thread (131) at the hollow portion of the rear section of the hollow conical section (13) is equal to the outer diameter of the external thread section (21) of the rear section (2) of the shell extractor.

[0024] The rear section (2) of the shell extractor includes an external thread section (21), a first cylindrical section (22), and a second cylindrical section (23) arranged in sequence along its axial direction. An automatic shell extractor hook guide arc (231) is provided on the rear outer circle of the second cylindrical section (23), and a firing pin clearance hole (232) is provided on the axis core. The threaded section of the external thread section (21) is used to connect to the front section (1) of the shell extractor. Its outer diameter is equal to the inner diameter of the internal thread (131) at the hollow part of the rear section of the hollow conical section (13). The diameter of the second cylindrical section (23) is equal to the diameter of the bottom edge of the rear section of the gun or artillery shell, and its length and thickness are equivalent to the bottom edge of the rear section of the gun or artillery shell.

[0025] The working process is as follows,

[0026] One method:

[0027] First, insert the second cylindrical section 23 of the shell extractor rear section 2 of the broken shell removal tool into the shell extractor hook of the automatic machine, let the automatic machine hold the broken shell removal tool, push the automatic machine forward, and let the broken shell removal tool enter the gun chamber with the broken shell. During the process, the front end 1 with a longitudinal groove and elasticity is inserted into the gun chamber with the broken shell, and the hook tooth section 11 is compressed when sliding along the inner wall hole of the gun shell. When the hook tooth section 11 slides out of the inner wall hole of the gun shell mouth, it elastically expands, and its rear part is stuck in the front mouth of the shell. Then, pull the charging handle on the automatic machine backward, the charging handle pulls the automatic machine, the automatic machine pulls the shell extractor, and the shell extractor hook pulls the broken shell removal tool with its hook tooth section 11 pressing the front mouth of the shell backward to pull out the broken shell. If the shell is too tight to the chamber and cannot be pulled manually, you can use a wooden hammer to knock the charging handle backward to loosen it and pull out the broken shell.

[0028] Another approach:

[0029] When the automatic shell puller is not suitable for use, only the shell extractor front section 1 and other hand pulling tools (such as "L" or "T" type pullers, etc.) are used.

[0030] First, connect the internal thread 131 in the hollow space at the rear section of the front section 1 of the broken case extraction tool to the external thread at the front end of another hand-pulling tool (such as an "L" or "T" shaped handle). Insert the tool into the chamber of a firearm with a broken case. The hook tooth section 11 is compressed as it slides along the inner wall hole of the firearm's shell. As the hook tooth section 11 slides out of the inner wall hole of the shell's mouth, it elastically expands, and its rear end is locked in the shell's mouth. Pulling the hand-pulling tool backward, the front hook tooth section 11 of the extractor (tool) / broken case extractor (tool) presses the front mouth of the shell backward, pulling out the broken case. If the shell is too tightly attached to the chamber and cannot be manually pulled out, use a wooden hammer to strike the handle backward to loosen it and pull it out.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A broken shell removal tool, characterized by: It comprises a shell remover front section (1) and a shell remover rear section (2), The front section (1) of the shell extractor comprises a hook tooth section (11) and a cone section (13). The cone section (13) has a front section and a rear section. The front sections of the hook tooth section (11) and the cone section (13) are hollow structures. A plurality of longitudinal grooves (14) are evenly formed on the hook tooth section (11) and the cone section (13), so that the front sections of the hook tooth section (11) and the cone section (13) form an elastic expansion claw structure. The outer diameter of the hook tooth section (11) is larger than the outer diameter of the corresponding broken shell. The hollow hook tooth section (11) ) is provided with a front guide arc (111) at the front end thereof, and the front guide arc (111) is used to cooperate with the broken shell to shrink the expansion claw structure, the outer diameter of the hook tooth section (11) is larger than the outer diameter of the conical section (13), so that a limiting step is formed between the rear end of the hook tooth section (11) and the conical section (13), and the limiting step is used to cooperate with the front end surface of the broken shell to limit the position, and the rear section of the conical section (13) is provided with an internal thread (131), and the internal thread (131) is used to connect the rear section (2) of the shell remover or a hand-pulling tool; The shell extractor rear section (2) comprises an external thread section (21), a first cylindrical section (22) and a second cylindrical section (23) arranged in sequence along the axial direction, the external thread section (21) being used for threadedly cooperating with the internal thread (131) for fixation, the diameter of the first cylindrical section (22) being equal to the outer diameter of the rear end of the conical section (13), the diameter of the second cylindrical section (23) being larger than the diameter of the first cylindrical section (22), so that a clamping step is formed between the front end of the second cylindrical section (23) and the first cylindrical section (22), the rear section of the second cylindrical section (23) being provided with an automatic shell extractor hook introduction arc (231), the clamping step being used for hooking with the automatic shell extractor hook.

2. A broken shell removal tool according to claim 1, characterized in that: The taper of the conical section (13) is consistent with the taper of the corresponding chamber.

3. The broken shell removal tool according to claim 1, characterized in that: A degassing groove (12) is provided at the front end of the conical section (13).

4. A broken shell removal tool according to claim 1, characterized in that: A firing pin clearance hole (232) is provided on the rear end surface of the second cylindrical section (23).

5. The broken shell removal tool according to claim 1, characterized in that: The diameter of the second cylindrical section (23) is equal to the diameter of the bottom edge of the corresponding cartridge case, and the axial length of the second cylindrical section (23) is equal to the axial length of the bottom edge of the rear section of the corresponding cartridge case.

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