Gun hanging type shearing device

Abstract

The gun hanging type shearing device comprises a muzzle connecting assembly connected with a muzzle and a tool bit assembly used for shearing, the muzzle connecting assembly comprises a muzzle connecting pipe and a tool bit connecting pipe which are coaxial, and a spacing cavity is formed between the muzzle connecting pipe and the tool bit connecting pipe; the tool bit assembly comprises a piston rod extending into the tool bit connecting pipe and a fixed tool rest coaxially connected with the tool bit connecting pipe, a movable tool bit is arranged on the piston rod, a movable tool moving hole matched with the movable tool bit is formed in the fixed tool rest, and a fixed tool bit opposite to the movable tool bit is arranged on the fixed tool rest. And the movable tool bit is driven to move towards the fixed tool bit by high-pressure gas generated by percussion of the blank ammunition. The gun hanging type shearing device is installed on a gun, shearing is achieved by taking high-temperature and high-pressure gas generated by percussion of blank ammunition as power, the gun hanging type shearing device has the advantages of being small in size, easy to carry, convenient to assemble and disassemble, free of influence on normal use of the gun and the like, and use of soldiers in individual combat or group combat is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of gun accessories, and in particular relates to a gun-mounted shear. Background Art

[0002] In the process of performing combat exercises, emergency rescue, personnel rescue and other tasks, you may encounter obstacles such as wire mesh, anti-theft doors and windows, guardrails, etc. In order to proceed with the mission smoothly, it is often necessary to demolish these obstacles.

[0003] In the prior art, when removing obstacles, auxiliary removal tools such as steel bar pliers and hydraulic pliers are usually needed. However, such tools are large in size and heavy in weight, making them inconvenient to carry during the mission. Especially when performing individual combat missions, due to the limitation of the weight of the soldiers, if auxiliary removal tools are not carried, the smooth progress of the mission will be seriously affected when encountering these obstacles; if auxiliary removal tools are carried, it will affect the carrying of other weapons and equipment. Therefore, a more portable auxiliary removal device is needed. Summary of the invention

[0004] The present invention provides a gun-mounted shear to solve at least one of the above technical problems.

[0005] The technical solution adopted by the present invention is: a gun-mounted shearing device, comprising a muzzle connection component connected to the muzzle and a cutter head component for shearing, The muzzle connection assembly comprises a coaxial muzzle connection tube and a cutter head connection tube, wherein a spacer cavity is provided between the muzzle connection tube and the cutter head connection tube; The cutter head assembly includes a piston rod extending into the cutter head connecting tube and a fixed cutter frame coaxially connected to the cutter head connecting tube, the piston rod is provided with a movable cutter head, the fixed cutter frame is provided with a movable cutter movement hole cooperating with the movable cutter head, and the fixed cutter frame is provided with a fixed cutter head arranged opposite to the movable cutter head, so that the movable cutter head is driven to move toward the fixed cutter head by the high-pressure gas generated by firing blank cartridges.

[0006] In a preferred embodiment, a plurality of balancing holes are formed on the cutter head connecting tube.

[0007] In a preferred embodiment, the balancing hole extends from an inner side close to the muzzle connecting tube to an outer side away from the muzzle connecting tube.

[0008] In a preferred embodiment, a tool withdrawal groove is formed on the outer peripheral wall of the piston rod, a tool withdrawal spring is sleeved on the outer side of the tool withdrawal groove, and one end of the tool withdrawal spring abuts against the fixed tool holder.

[0009] In a preferred embodiment, a lubricating oil groove is formed on either the piston rod or the cutter head connecting tube.

[0010] In a preferred embodiment, the fixed blade holder is detachably connected to the fixed blade head.

[0011] In a preferred embodiment, either the fixed knife holder or the fixed knife head has a fixed knife connecting hole, and the other has a fixed knife connecting protrusion that cooperates with the fixed knife connecting hole, and positioning holes extending radially along the piston rod are formed on the fixed knife connecting hole and the fixed knife connecting protrusion, so that the fixed knife head can be connected to the fixed knife holder by utilizing the cooperation of the positioning pin and the positioning hole.

[0012] In a preferred embodiment, the fixed knife holder comprises a movable knife matching portion, an extending portion and a fixed knife matching portion, the movable knife movement hole is located in the movable knife matching portion, and the fixed knife head is detachably connected to the fixed knife matching portion.

[0013] In a preferred embodiment, a cutter head movement groove cooperating with the movable cutter head is formed on the extension portion.

[0014] In a preferred embodiment, the fixed tool holder and the cutter head connecting tube are threadedly connected, and a limiting hole is provided on the fixed tool holder to limit the relative position of the fixed tool holder and the cutter head connecting tube by cooperation of a limiting bolt and the limiting hole.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. As a preferred embodiment of the present invention, the gun-mounted shears include a muzzle connection assembly and a cutter head assembly. Through the connection between the muzzle connection assembly and the muzzle, the high-pressure gas generated by the firing of blank cartridges by the gun carried by the soldier is directly used as power to drive the moving cutter head of the cutter head assembly to move in the direction of the fixed cutter head, thereby achieving the demolition of obstacles such as wire mesh, anti-theft doors and windows, and guardrails. This power utilization method allows the gun-mounted shears to be used as a gun accessory. During individual or group combat, the soldier can install the gun-mounted shears on the muzzle for demolition work as needed, and remove the gun-mounted shears from the muzzle after use, which greatly increases the convenience of using the shearing device. At the same time, the gun-mounted shears have the characteristics of small size, easy to carry, easy to load and unload, and no influence on the normal use of the gun, providing more equipment carrying options for individual or group combat, and effectively improving the combat capability of soldiers.

[0016] 2. As a preferred embodiment of the present invention, the balance hole arranged on the cutter head connecting tube can relieve pressure and temperature. Since high-temperature and high-pressure gases are generated at the moment of firing blank cartridges, these gases will expand rapidly in the closed interval cavity, and promote the movement of the piston rod during the expansion process. When the piston rod moves to the extreme position under the thrust of the high-pressure gas, there is still a closed space between the interval cavity and the piston rod. At this time, the balance hole can discharge the high-temperature and high-pressure gases to avoid damage to the cutter head connecting tube due to the inability to discharge the gas.

[0017] 3. As a preferred embodiment of the present invention, the knife-retracting spring provided on the piston rod can produce elastic deformation in the process of the high-pressure gas generated by firing blank cartridges pushing the piston rod to move toward the fixed knife holder. After the movable knife head cooperates with the fixed knife head to complete the shearing, the elastic deformation is restored and the piston rod is reset to the original position, which is convenient for the movement of the piston rod during the next shearing, thereby playing a role in resetting the piston rod. In addition, the knife-retracting spring setting can also play a buffering role in the movement of the piston rod, avoiding the high-speed collision between the piston rod and the knife head connecting pipe caused by the rapid movement of the high-pressure gas, thereby improving the service life of the gun-mounted shear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the three-dimensional structure of a gun-mounted shearing device according to a preferred embodiment of the present invention; Figure 2 A structural cross-sectional view of a gun-mounted shear in an initial state according to a preferred embodiment of the present invention; Figure 3 A structural cross-sectional view of a gun-mounted shear in a shearing state according to a preferred embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of the local enlarged structure of the middle A area; Attached photos

[0019] 1. Muzzle connection assembly; 11. Muzzle connection pipe; 12. Cutting head connection pipe; 120. Balance hole; 13. Spacer cavity; 2. Cutter head assembly; 21. Piston rod; 210. Cutter withdrawal groove; 211. Cutter withdrawal spring; 22. Moving cutter head; 23. Fixed cutter holder; 230. Moving cutter mating portion; 231. Extension portion; 232. Fixed cutter mating portion; 233. Cutter head movement groove; 234. Limiting hole; 235. Limiting bolt; 24. Moving cutter movement hole; 25. Fixed cutter head; 250. Fixed cutter connecting hole; 251. Fixed cutter connecting protrusion; 252. Positioning hole; 253. Positioning pin. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0022] In addition, in the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. 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 cannot be understood as a limitation on the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0025] Example 1 like Figure 1 , Figure 2 , Figure 3As shown, a gun-mounted shear includes a gun-mounted shearing device, which includes a gun-mounted shearing device 1 connected to a gun-mounted muzzle and a cutter head component 2 for shearing. When the gun-mounted shearing device 1 is connected to the gun-mounted muzzle, a screw sleeve that matches a gun barrel, a flash suppressor, a compensator, a silencer, etc. can be used. When it is needed, the gun-mounted shearing device is connected to the gun barrel, the flash suppressor, the compensator, or the silencer. After use, the gun-mounted shearing device is removed. This matching connection mode can make the gun-mounted shearing device not affect the normal use of the gun. In the process of performing tasks, the soldier can selectively load and unload the gun-mounted shearing device according to the use needs.

[0026] Specifically, the muzzle connection assembly 1 includes a coaxial muzzle connection tube 11 and a cutter head connection tube 12, the muzzle connection tube 11 and the cutter head connection tube 12 are integrally formed, the diameter of the cutter head connection tube 12 is larger than that of the muzzle connection tube 11, and a spacing cavity 13 is provided between the muzzle connection tube 11 and the cutter head connection tube 12, the internal space of the muzzle connection tube 11 can be a part of the spacing cavity 13, when the muzzle connection assembly 1 cooperates with a gun barrel, a flash suppressor, a compensator, a silencer, etc., the spacing cavity 13 can accommodate the gun barrel, the flash suppressor, the compensator, the silencer, etc., and at the same time, the spacing cavity 13 provides a temporary storage space for the high-temperature and high-pressure gas generated by firing blank cartridges, so that the high-temperature and high-pressure gas expands in the spacing cavity 13; The cutter head assembly 2 includes a piston rod 21 extending into the cutter head connecting tube 12 and a fixed cutter holder 23 coaxially connected to the cutter head connecting tube 12. The piston rod 21 is provided with a movable cutter head 22. The fixed cutter holder 23 is provided with a movable cutter movement hole 24 cooperating with the movable cutter head 22. The fixed cutter holder 23 is provided with a fixed cutter head 25 arranged opposite to the movable cutter head 22, so that the movable cutter head 22 is driven to move toward the fixed cutter head 25 by the high-pressure gas generated by firing blank cartridges.

[0027] When a soldier encounters obstacles such as wire mesh, anti-theft doors and windows, and guardrails and needs to be broken through during individual or group combat, the soldier can connect the gun-mounted shear to the muzzle through the connection between the muzzle connection component 1 and the muzzle, and then place the fixed knife holder 23 on the wire mesh, anti-theft doors and windows, and guardrails that he wants to cut and fire blank bullets. The high-temperature and high-pressure gas generated by the blank bullets expands in the spacing chamber 13. During the expansion process, the cooperation between the piston rod 21 and the cutter head connecting tube 12 can seal the high-temperature and high-pressure gas, so that the high-temperature and high-pressure gas pushes the piston rod 21 to move in the direction of the fixed knife holder 23. The movable cutter head 22 moves in the direction of the fixed cutter head 25, and under the action of the movable cutter head 22 and the fixed cutter head 25, obstacles such as wire mesh, anti-theft doors and windows, and guardrails can be broken. This power utilization method allows the gun-mounted shears to be used as a gun accessory without affecting the normal function of the gun. During individual or group combat, soldiers can install the gun-mounted shears on the muzzle for breaking and demolition work as needed, and remove the gun-mounted shears from the muzzle after use, which greatly increases the convenience of using the shearing device. At the same time, the gun-mounted shears have the characteristics of small size, easy to carry, easy to load and unload, and no impact on the normal use of the gun, providing more equipment carrying options for individual or group combat, and effectively improving the combat capability of soldiers.

[0028] Example 2 Different from Example 1, Figure 1 , Figure 2 , Figure 3 As shown, a plurality of balancing holes 120 are formed on the cutter head connecting tube 12. The balancing holes 120 extend radially from the inner side close to the muzzle connecting tube 11 to the outer side away from the muzzle connecting tube 11. The plurality of balancing holes 120 are evenly distributed in a circular array in the circumferential direction of the cutter head connecting tube 12, and the number thereof may be 4-8.

[0029] The balance hole 120 provided on the cutter head connecting tube 12 can relieve pressure and temperature. Since high-temperature and high-pressure gases are generated at the moment of firing blank cartridges, these gases will expand rapidly in the closed interval chamber 13, and promote the movement of the piston rod 21 during the expansion process. When the piston rod 21 moves to the extreme position under the thrust of the high-pressure gas, there is still a closed space between the interval chamber 13 and the piston rod 21. At this time, the balance hole 120 can discharge the high-temperature and high-pressure gases to avoid damage to the cutter head connecting tube 12 due to the inability to discharge the gas.

[0030] At the same time, the extension direction of the balance hole 120 allows the high-temperature and high-pressure gas to be discharged radially along the extension direction of the cutter head connecting tube 12 when it is discharged through the balance hole 120, thereby preventing the high-temperature and high-pressure gas from causing damage to the soldiers during discharge.

[0031] Example 3 Different from Example 1 and Example 2, Figure 1 , Figure 2 , Figure 3As shown, a knife-retracting groove 210 is formed on the outer peripheral wall of the piston rod 21. The knife-retracting groove 210 is realized by reducing the diameter of the piston rod 21. The knife-retracting groove 210 divides the main body of the piston rod 21 into a groove depth part and a connecting part. The diameter of the connecting part is larger than the diameter of the groove depth part. The connecting part is transitionally matched with the cutter head connecting tube 12. A lubricating oil groove is formed on the piston rod 21 or the cutter head connecting tube 12. The lubricating oil groove is used to apply lubricating oil between the connecting part and the cutter head connecting tube 12. The lubricating oil can lubricate the movement of the piston rod 21 on the one hand, and can also increase the air tightness between the piston rod 21 and the cutter head connecting tube 12 on the other hand, so that the high-temperature and high-pressure gas generated by firing blank cartridges can drive the movement of the piston rod 21. A knife-retracting spring 211 is sleeved on the outer side of the knife-retracting groove 210. One end of the knife-retracting spring 211 abuts against the fixed knife holder 23, and the other end abuts against the connecting part.

[0032] When using, Figure 2 , which is a schematic diagram of the relative positions of the piston rod 21 and the cutter head connecting tube 12 when the blank cartridge is not fired. At this time, the knife spring 211 is in a relaxed state. When the blank cartridge is fired, the piston rod 21 moves toward the fixed knife holder 23 under the push of the high-temperature and high-pressure gas. During the movement of the piston rod 21, the knife spring 211 is compressed and elastically deformed. When the piston rod 21 moves to the limit position, the knife spring 211 is in a relaxed state. Figure 3 At this time, as the high-temperature and high-pressure gas is discharged from the balance hole 120, the retracting spring 211 recovers its elastic deformation, driving the piston rod 21 to move toward the muzzle connecting tube 11, and finally recovers to the position shown in FIG. Figure 2 The state shown. The knife spring 211 plays a role in resetting the piston rod 21 during this process. In addition, the knife spring 211 can also buffer the movement of the piston rod 21, avoiding the high-speed collision between the piston rod 21 and the cutter head connecting pipe 12 caused by the rapid movement of the high-pressure gas, thereby improving the service life of the gun-mounted shear.

[0033] Optionally, the fixed blade holder 23 is detachably connected to the fixed blade head 25. This facilitates the replacement of the fixed blade head 25. When the fixed blade head 25 is damaged, the fixed blade head 25 can be replaced in time, thereby increasing the service life of the gun-mounted shear. Specifically, the detachable connection between the fixed blade head 25 and the fixed blade holder 23 can be achieved by providing a fixed blade connection hole 250 on the fixed blade holder 23, providing a fixed blade connection protrusion 251 that matches the fixed blade connection hole 250 on the fixed blade head 25, and forming a positioning hole 252 that extends radially along the piston rod 21 on the fixed blade connection hole 250 and the fixed blade connection protrusion 251. When installing the fixed blade head 25, the positioning pin 253 can be inserted into the positioning hole 252 to achieve the connection between the fixed blade head 25 and the fixed blade holder 23. When disassembling the fixed blade head 25, the positioning pin 253 can be removed, and the fixed blade connection hole 250 and the fixed blade connection protrusion 251 can be separated. The positioning pin 253 and the positioning hole 252 can be threaded. In addition, the fixed blade connection hole 250 can also be provided on the fixed blade head 25, and the fixed blade connection protrusion 251 can be provided on the fixed blade holder 23. The movable blade head 22 and the movable blade holder are also detachably connected in the same manner.

[0034] Optional, such as Figure 1 , Figure 2 , Figure 3 As shown, the fixed knife holder 23 includes a moving knife matching portion 230, an extension portion 231 and a fixed knife matching portion 232, the moving knife movement hole 24 is located at the moving knife matching portion 230, the fixed knife head 25 is detachably connected to the fixed knife matching portion 232, and a knife head movement groove 233 that matches the moving knife head 22 is formed on the extension portion 231. The setting of the knife head movement groove 233 can play an auxiliary guiding role for the movement of the piston rod 21 on the one hand, and can play a protective role on the other hand. The moving knife movement groove is used to partially cover the moving knife head 22 and the piston rod 21, and the metal debris generated by shearing the wire mesh, anti-theft doors and windows, guardrails, etc. is blocked to avoid the personal safety threat caused by the splash of metal debris caused by the high-speed shearing of the moving knife head 22.

[0035] Optional, such as Figure 4 As shown, the fixed knife holder 23 and the cutter head connecting tube 12 are threadedly connected, and a limiting hole 234 is provided on the fixed knife holder 23. The limiting hole 234 extends along the radial direction of the fixed knife holder 23, so that the length of the fixed knife holder 23 extending into the cutter head connecting tube 12 is limited by the cooperation of the limiting bolt 235 and the limiting hole 234, so as to facilitate the determination of whether the fixed knife holder 23 is installed in place when the fixed knife holder 23 and the cutter head connecting tube 12 are assembled and installed.

[0036] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0037] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0038] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A gun-mounted shear, characterized in that: It comprises a muzzle connection assembly (1) connected to the muzzle and a cutter head assembly (2) for shearing. The muzzle connection assembly (1) comprises a coaxial muzzle connection tube (11) and a cutter head connection tube (12), wherein a spacer cavity (13) is provided between the muzzle connection tube (11) and the cutter head connection tube (12); The cutter head assembly (2) comprises a piston rod (21) extending into the cutter head connecting tube (12) and a fixed cutter holder (23) coaxially connected to the cutter head connecting tube (12); the piston rod (21) is provided with a movable cutter head (22); the fixed cutter holder (23) is provided with a movable cutter movement hole (24) cooperating with the movable cutter head (22); the fixed cutter holder (23) is provided with a fixed cutter head (25) arranged opposite to the movable cutter head (22) so that the movable cutter head (22) is driven to move toward the fixed cutter head (25) by high-pressure gas generated by firing blank cartridges.

2. The gun-mounted shear according to claim 1, characterized in that: A plurality of balancing holes (120) are formed on the cutter head connecting pipe (12).

3. The gun-mounted shears according to claim 2, characterized in that: The balancing hole (120) extends from an inner side close to the muzzle connecting tube (11) to an outer side away from the muzzle connecting tube (11).

4. The gun-mounted shears according to claim 1, characterized in that: A tool withdrawal groove (210) is formed on the outer peripheral wall of the piston rod (21), a tool withdrawal spring (211) is sleeved on the outer side of the tool withdrawal groove (210), and one end of the tool withdrawal spring (211) is in contact with the fixed tool holder (23).

5. The gun-mounted shear according to any one of claims 1 to 4, characterized in that: A lubricating oil groove is formed on either the piston rod (21) or the cutter head connecting tube (12).

6. The gun-mounted shears according to claim 1, characterized in that: The fixed blade holder (23) is detachably connected to the fixed blade head (25).

7. The gun-mounted shears according to claim 6, characterized in that: Either the fixed knife holder (23) or the fixed knife head (25) has a fixed knife connection hole (250), and the other has a fixed knife connection protrusion (251) that cooperates with the fixed knife connection hole (250). Positioning holes (252) extending radially along the piston rod (21) are formed on the fixed knife connection hole (250) and the fixed knife connection protrusion (251), so that the fixed knife head (255) can be connected to the fixed knife holder (23) by utilizing the cooperation of the positioning pin (253) and the positioning hole (252).

8. The gun-mounted shears according to claim 1, characterized in that: The fixed knife holder (23) comprises a movable knife matching portion (230), an extension portion (231) and a fixed knife matching portion (232); the movable knife movement hole (24) is located in the movable knife matching portion (230); and the fixed knife head (25) is detachably connected to the fixed knife matching portion (232).

9. The gun-mounted shears according to claim 8, characterized in that: A cutter head moving groove (233) that cooperates with the movable cutter head (22) is formed on the extension portion (231).

10. The gun-mounted shears according to claim 1, characterized in that: The fixed blade holder (23) and the cutter head connecting tube (12) are threadedly connected, and a limiting hole (234) is provided on the fixed blade holder (23) so as to limit the relative position of the fixed blade holder (23) and the cutter head connecting tube (12) through the cooperation of a limiting bolt (235) and the limiting hole (234).

Images