Anti-accidental-fire device suitable for aircraft gun in pod

Abstract

The invention provides an anti-accidental-fire device suitable for an aircraft gun in a pod. The anti-accidental-fire device comprises a shell, a threaded rod assembly, a rotating shaft and a clamping jaw assembly. The shell is installed on an aircraft gun, the threaded rod assembly is connected to the shell and hinged to the clamping jaw assembly through a rotating shaft, the rotating shaft is installed on the shell in the mode that the rotating shaft is perpendicular to the axis of the aircraft gun and can move relative to the shell and parallel to the axis of the aircraft gun, the clamping jaw assembly is used for clamping the aircraft gun, and the threaded rod assembly is used for locking and releasing movement of the clamping jaw assembly. In the threaded rod assembly, a threaded rod is hinged to the first connecting rod through a first pin shaft, and the threaded rod can be locked through a nut. In the clamping jaw assembly, a second connecting rod is hinged to a clamping jaw through a second pin shaft and abuts against the outer surface of a bullet filling piston of the aircraft gun, and the clamping jaw is clamped on a bounce-back lock of the aircraft gun. In the aircraft gun pod maintenance and troubleshooting period, the aircraft gun can be directly installed in the pod as a safety measure for preventing the aircraft gun from getting out of fire in the pod, and the use safety of the pod is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft gun structures, and in particular relates to an anti-fire device suitable for an aircraft gun in a pod. Background Art

[0002] The advantages of aircraft external gun pods are becoming increasingly prominent. They can integrate functions such as ammunition feeding, chain discharging, chain retraction, and shell ejection, which can not only save precious fuselage space, but also facilitate system upgrades and iterations. At the same time, the modular design can meet the aircraft's use requirements of "loading when in use and removing when not in use".

[0003] It is inevitable that the aircraft gun pod will malfunction during use. Correct use and maintenance are the guarantee to ensure the reliable operation of the aircraft gun. However, during the maintenance of the aircraft gun pod, the aircraft gun firing shaft component may be accidentally touched during inspection, which may in turn ignite the shell primer in the barrel and cause an accident. In addition, if the pod fails in the air, the cause of the failure must be found after landing, and measures must be taken to prevent it from happening again. In this case, manual troubleshooting is required on the ground. If jamming of bullets or chains is found during troubleshooting, further maintenance is required after the bullets are discharged. During the discharge process, the bullet chain will be hooked with a bullet discharge hook, and misfires may also occur during the process of moving the ammunition in the barrel, causing accidents. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that an aircraft gun pod may cause an accidental firing of the aircraft gun in the pod during maintenance and troubleshooting, and to provide an anti-fire device suitable for the aircraft gun in the pod. The device can be used as a safety measure to prevent the aircraft gun from accidentally firing during maintenance and troubleshooting of the aircraft gun pod, and can solve the safety problem during maintenance and troubleshooting of the aircraft gun in the pod.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] An anti-fire device suitable for an aircraft gun in a pod, comprising a housing, a threaded rod assembly, a rotating shaft and a claw assembly;

[0007] The housing is used to be mounted on the aircraft gun around the circumference of the aircraft gun in the aircraft gun nacelle;

[0008] The threaded rod assembly is connected to the housing and is hingedly connected to the claw assembly through a rotating shaft. The rotating shaft is installed to the housing perpendicularly to the axis of the aircraft gun and can move relative to the housing parallel to the axis of the aircraft gun. The claw assembly is used to hold the aircraft gun, and the threaded rod assembly is used to lock and release the movement of the claw assembly.

[0009] The threaded rod assembly includes a threaded rod, a first pin shaft, a first connecting rod and a nut. The threaded rod extends along the axial direction of the aircraft gun and is connected to the housing. The threaded rod is hingedly connected to one end of the first connecting rod through the first pin shaft. The other end of the first connecting rod is hingedly connected to the rotating shaft. The first pin shaft is parallel to the rotating shaft. The threaded rod can be locked by the nut.

[0010] The claw assembly includes a second connecting rod, a second pin shaft and a claw. The second connecting rod extends radially along the aircraft gun, one end of which is hinged to the rotating shaft, the middle part is hingedly connected to one end of the claw through the second pin shaft, and the other end is used to support the outer surface of the charging piston of the aircraft gun. The second pin shaft is parallel to the rotating shaft and is closer to the axis of the aircraft gun than the rotating shaft. The claw can move parallel to the axis of the aircraft gun relative to the shell, and the grab hook at the other end of the claw is used to clamp on the rebound lock of the aircraft gun, and the grab hook and the first pin shaft are located on both sides of the rotating shaft on the axis of the aircraft gun.

[0011] Furthermore, the shell is in a "convex" shape, and the top of the "convex" is processed with a symmetrical long groove for installing the rotating shaft and a slide groove for the sliding of the claws, and the bottom is processed with grooves extending toward each other to cooperate with the aircraft gun.

[0012] Furthermore, a connecting hole is provided on the shell for mounting the shell to the aircraft gun.

[0013] Furthermore, one end of the rotating shaft is provided with a circumferential flange protruding radially outward, and the other end is provided with a groove for receiving the open retaining ring.

[0014] Furthermore, one end of the threaded rod is provided with a cylindrical portion passing through the first pin shaft, and the other end is processed with a thread matching with the nut.

[0015] Further, the first connecting rod includes a cylindrical portion and two lugs extending radially and parallelly from the cylindrical portion, the cylindrical portion is used to pass through the rotating shaft, and the lugs are used to connect to the first pin shaft.

[0016] Furthermore, one end of the second connecting rod is processed with two parallel protrusions for passing through the rotating shaft, and the other end is provided with a vertically extending protrusion for supporting the outer surface of the charging piston of the aircraft gun.

[0017] Furthermore, one end of the claw is provided with two parallel protrusions for passing through the second pin shaft, and the other end is provided with two grab hooks extending toward each other to clamp the rebound lock of the aircraft gun.

[0018] The advantages of the present invention are:

[0019] The invention discloses an anti-fire device for a cannon in a pod, comprising a housing, a threaded rod assembly connected to the housing, a rotating shaft connected to the housing in a movable manner, and a claw assembly hinged to the threaded rod assembly through the rotating shaft; in the threaded rod assembly, the threaded rod is hinged to the first connecting rod through a first pin shaft and can be locked to the housing through a nut; in the claw assembly, the second connecting rod is hinged to the claw through a second pin shaft; and the first connecting rod and the second connecting rod are hinged through the rotating shaft. When the pod needs to be operated and safety measures are taken for the cannon in the pod, the anti-fire device can be directly installed on the cannon, the claw in the claw assembly is clamped on the rebound lock of the cannon, the second connecting rod supports the outer surface of the charging piston of the cannon, and the claw is moved to pull the second connecting rod, the first connecting rod and the threaded rod to move in sequence until the second connecting rod can limit the movement of the cannon charging piston, and the nut is tightened to lock the threaded rod, thereby achieving the fixation of the anti-fire device; after use, the nut can be loosened and the threaded rod can be pushed to loosen the second connecting rod, and the device can be removed. Therefore, the device of the present invention operates smoothly, safely and reliably, and can be directly installed on the aircraft gun in the pod as a safety measure to avoid accidental discharge of the aircraft gun in the pod during maintenance and troubleshooting of the aircraft gun pod, thereby improving the safety of the pod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or other features and advantages of the present invention will become more easily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and some features are exaggerated or reduced to show details of specific components. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional diagram of the anti-fire device applicable to the aircraft gun in the pod of the present invention;

[0022] Figure 2 It is a cross-sectional view of the anti-fire device of the present invention applicable to the aircraft gun in the pod;

[0023] Figure 3 is a three-dimensional diagram of the housing in the present invention;

[0024] Figure 4 is a stereoscopic diagram showing the connection structure of the threaded rod assembly, the rotating shaft and the claw assembly in the present invention;

[0025] Figure 5 is a three-dimensional diagram of the threaded rod of the present invention;

[0026] Figure 6 is a three-dimensional diagram of the first connecting rod in the present invention;

[0027] Figure 7 is a three-dimensional diagram of the second connecting rod in the present invention;

[0028] Figure 8 It is a three-dimensional diagram of the clamping claw in the present invention.

[0029] In the figure:

[0030] 1-housing, 11-connecting hole, 12-through hole, 13-long slot, 14-sliding slot, 15-card slot;

[0031] 2-threaded rod assembly, 21-threaded rod, 211-cylindrical portion of threaded rod, 22-first pin, 23-first connecting rod, 231-cylindrical portion of first connecting rod, 232-lug, 24-nut;

[0032] 3-rotating shaft, 31-opening retaining ring;

[0033] 4-claw assembly, 41-second connecting rod, 411-protrusion, 412-protrusion, 413-pin shaft hole, 42-second pin shaft, 43-claw, 431-claw, 432-protrusion. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration, and is not intended to limit the present invention.

[0035] The present invention provides an anti-fire device suitable for an aircraft gun in a pod. The device is a matching tool for the aircraft gun pod, which is used to ensure the safety of the aircraft gun pod when troubleshooting. When taking safety measures, the device can be installed on the outer surface of the aircraft gun gas cylinder in the pod. The device can be fixed on the aircraft gun without disassembling the aircraft gun. After the device is installed, it can be fixed and prevented from firing by adjusting the mechanism. After the device is used, it can be released by adjusting the mechanism.

[0036] Overall reference Figure 1 and Figure 2 As an exemplary embodiment of the present invention, the anti-fire device for the aircraft gun in the pod includes a shell 1, a threaded rod assembly 2, a rotating shaft 3 and a claw assembly 4. The shell 1 is used to be installed on the aircraft gun around the aircraft gun in the aircraft gun pod to provide support for the anti-fire device. The threaded rod assembly 2 is used to lock and release the movement of the claw assembly 4 and is connected to the shell 1. The claw assembly 4 is used to hold the aircraft gun. The threaded rod assembly 2 is hingedly connected to the claw assembly 4 through the rotating shaft 3. The threaded rod assembly 2 and the claw assembly 4 can rotate relatively slightly. In use, the claw assembly 4 can pull the threaded rod assembly 2 to move. After the movement is in place, the threaded rod assembly 2 can be locked to achieve the fixation of the entire device. After use, the threaded rod assembly 2 can be released, and the claw assembly 4 can be loosened by pushing the threaded rod assembly 2, and then the entire device can be removed.

[0037] Combination Figure 3In order to facilitate the installation of the shell 1, a connecting hole 11 is provided on the shell 1, and its axis is perpendicular to the axis of the aircraft gun, which is used to install the shell 1 to the aircraft gun, especially to cooperate with the plug on the gas cylinder of a certain type of aircraft gun, which is convenient for disassembly and assembly while limiting the freedom of the shell. A through hole 12 parallel to the axis of the aircraft gun is also processed on the shell 1 to realize the connection between the threaded rod assembly 2 and the shell 1. In some embodiments, the shell 1 can be in the shape of a "convex" character, and the top of the "convex" character is processed with a symmetrical long groove 13 for installing the rotating shaft 3 and a slide groove 14 for sliding the claw 43 described below, and the bottom end is processed with a clamping groove 15 extending toward each other, and the clamping groove 15 is used to cooperate with the aircraft gun and can be fixed to a protrusion on the outer surface of a certain type of aircraft gun. The long groove 13, the slide groove 14 and the clamping groove 15 are all parallel to the axis of the aircraft gun, and the slide groove 14 is closer to the axis of the aircraft gun than the long groove 13.

[0038] Combination Figure 4 The rotating shaft 3 is installed perpendicularly to the axis of the aircraft gun to the housing 1, in particular, to the long slot 13 passing through the housing 1, and can move relative to the housing 1 in the long slot 13 parallel to the axis of the aircraft gun to achieve the movement of the device as a whole, thereby clamping the aircraft gun. To facilitate the movable installation of the rotating shaft 3 on the housing 1, one end of the rotating shaft 3 is provided with a circumferential flange protruding radially outward, and the other end is provided with a groove for receiving an open retaining ring 31. The flange and the open retaining ring together realize the axial limit of the rotating shaft 3, thereby connecting the rotating shaft 3 to the housing 1 and allowing the swing of the second connecting rod 41 described below to be achieved.

[0039] The threaded rod assembly 2 includes a threaded rod 21, a first pin 22, a first connecting rod 23 and a nut 24. The threaded rod 21 extends along the axial direction of the aircraft gun in the space between the two long slots 12 of the housing 1, passes through the through hole 12 of the housing 1 and is connected to the housing 1, and is hingedly connected to one end of the first connecting rod 23 through the first pin 22. The threaded rod 21 and the first connecting rod 23 can rotate relatively slightly, the other end of the first connecting rod 23 is hinged to the rotating shaft 3, the first pin 22 is parallel to the rotating shaft 3, and the threaded rod 21 can be locked by the nut 24.

[0040] Figure 5 and Figure 6The threaded rod 21 and the first connecting rod 23 are shown respectively. In order to realize the rotatable connection between the threaded rod and the first connecting rod with a simple structure, one end of the threaded rod 21 is provided with a cylindrical portion 211 passing through the first pin 22. In addition, the other end of the threaded rod 21 is processed with a thread that cooperates with the nut 24, so that the threaded rod 21 can be locked and loosened through the nut 24. In addition, the first connecting rod 23 may include a cylindrical portion 231 and two lugs 232 extending radially and parallel from the cylindrical portion, the cylindrical portion 231 is used to pass through the rotating shaft 3, and the lugs 232 are used to connect the first pin 22. In particular, the first pin 22 can pass through the cylindrical portion 211 of the threaded rod 21 and through the two lugs 232 of the first connecting rod 23, thereby conveniently realizing the rotatable connection between the threaded rod 21 and the first connecting rod 23.

[0041] Return to reference Figure 4 The claw assembly 4 includes a second connecting rod 41, a second pin 42 and a claw 43. The second connecting rod 41 extends roughly along the radial direction of the aircraft gun, one end of which is hinged to the rotating shaft 3, and the middle part is hinged to one end of the claw 43 through the second pin 42, and the other end is used to support the outer surface of the charging piston of the aircraft gun. The second pin 42 is parallel to the rotating shaft 3, and as shown in FIG. Figure 2 It can be clearly seen that the second pin shaft 42 is closer to the axis of the aircraft gun than the rotating shaft 3, and the claw 43 can move in the slide groove 14 parallel to the axis of the aircraft gun relative to the housing 1. The hook 431 at the other end of the claw 43 is used to be clamped on the rebound lock of the aircraft gun to limit the overall movement of the anti-fire device. The hook 431 and the first pin shaft 22 are located on both sides of the rotating shaft 3 on the axis of the aircraft gun, so that the movement of the claw 43 can drive the second connecting rod 41, the first connecting rod 23 and the threaded rod 21 to move together.

[0042] Figure 7 and Figure 8 The second connecting rod and the claw are shown respectively. Two parallel protrusions 411 are processed at one end of the second connecting rod 41 for passing through the rotating shaft 3. The rotating shaft 3 can pass through the cylindrical portion 231 of the first connecting rod 23 and the two protrusions 411 of the second connecting rod 41 to achieve a rotatable connection between the first connecting rod 23 and the second connecting rod 41. The other end of the second connecting rod 41 is provided with a vertically extending protrusion 412 for supporting the outer surface of the charging piston of the aircraft gun, and the protrusion 412 extends toward the catch 431. In addition, two parallel convex pieces 432 are provided at one end of the claw 43 for passing through the second pin 42. The second pin 42 can pass through the pin hole 413 on the second connecting rod 41 and pass through the two convex pieces 432 of the claw 43 to achieve a rotatable connection between the second connecting rod 41 and the claw 43. The other end of the claw 43 is provided with two catches 431 extending toward each other to clamp the rebound lock of the aircraft gun.

[0043] The assembly process of the anti-fire device for the aircraft gun in the pod provided by the present invention is as follows:

[0044] Step 1, assembling the threaded rod assembly 2 (excluding the nut 24): installing the threaded rod 21 into the first connecting rod 23, and then connecting the threaded rod 21 and the first connecting rod 23 with the first pin 22, and ensuring the relative rotation and anti-loosening between the threaded rod 21 and the first connecting rod 23 through tolerance matching;

[0045] Step 2, assembling the claw assembly 4: installing the second connecting rod 41 into the claw 43, and connecting the second connecting rod 41 and the claw 43 with the second pin 42;

[0046] Step 3, assembling the threaded rod assembly 2 and the claw assembly 4: installing the first connecting rod 23 into the second connecting rod 41;

[0047] Step 4, assembly of the threaded rod assembly 2, the claw assembly 4 and the housing 1: put the threaded rod 21, the first pin 22, the first connecting rod 23, the second connecting rod 41, the second pin 42 and the claw 43 into the housing 1, and pass the rotating shaft 3 through the first connecting rod 23, the second connecting rod 41 and the housing 1, and fix the rotating shaft 3 with the open retaining ring 7; insert the first connecting rod 23 into the connecting hole 11 of the housing 1, and fix the threaded rod 21 with the nut 24; put the claw 43 into the slide groove 14 of the housing 1. At this point, the overall assembly of the device is completed. When the nut 24 is not tightened, the second connecting rod 41, the first connecting rod 23 and the threaded rod 21 can be driven to move together in sequence by moving the claw 43.

[0048] Next, the working process, that is, the installation and disassembly process of the anti-fire device suitable for the aircraft gun in the pod provided by the present invention will be described.

[0049] The installation process of the anti-fire device is as follows: install the device on the outer surface of a certain type of aircraft gun gas cylinder, match the slot 15 of the shell 1 with the outer surface of the gas cylinder, clamp the claw 43 on the aircraft gun rebound lock, match the connecting hole 11 of the shell 1 with the upper plug of the aircraft gun gas cylinder, and support the protrusion 412 of the second connecting rod 41 against the outer surface of the aircraft gun charging piston; adjust the position of the anti-fire device, that is, move the claw 43, so as to pull the second connecting rod 41, the first connecting rod 23 and the threaded rod 21 to move in sequence, until the second connecting rod 41 can limit the movement of the aircraft gun charging piston, and tighten the nut 3 to lock the threaded rod 21. At this point, the anti-fire device can be fixed. After the anti-fire device is installed, the aircraft gun can be maintained. During the inspection of the aircraft gun pod, it can be avoided to accidentally touch the aircraft gun firing shaft component and stimulate the shell primer in the gun chamber, thereby ensuring the safety of the pod.

[0050] The disassembly process of the anti-fire device is as follows: first loosen the nut 24, then push the threaded rod 21 to loosen the second connecting rod 41, then move the housing 1 to separate it from the plug on the aircraft gun gas cylinder, separate the claw 43 and the aircraft gun rebound lock, and then the anti-fire device can be removed.

[0051] Therefore, as described above, the anti-accidental firing device of the present invention can be used as a supporting tool for the pod. When it is necessary to prevent the accidental firing of the aircraft gun in the pod, it can be installed on the aircraft gun and several parts of the aircraft gun can be clamped, thereby preventing the aircraft gun firing shaft component from being accidentally triggered, and it can be removed after use. The device operates smoothly, safely and reliably, and can be directly installed on the aircraft gun in the pod as a safety measure to avoid accidental firing of the aircraft gun in the pod during maintenance and troubleshooting of the aircraft gun pod, thereby improving the safety of the pod.

[0052] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or substituted for the corresponding features in other implementations. The technical solutions obtained by these combinations or substitutions shall also be deemed to be included in the protection scope of the present invention.

Claims

1. An anti-fire device suitable for an aircraft gun in a pod, characterized in that: It includes a housing, a threaded rod assembly, a rotating shaft and a claw assembly; The housing is used to be installed on the aircraft gun in the aircraft gun nacelle around the circumference of the aircraft gun; The threaded rod assembly is connected to the housing and is hingedly connected to the claw assembly through the rotating shaft. The rotating shaft is installed to the housing perpendicular to the axis of the aircraft gun and can move relative to the housing parallel to the axis of the aircraft gun. The claw assembly is used to clamp the aircraft gun, and the threaded rod assembly is used to lock and release the movement of the claw assembly. The threaded rod assembly includes a threaded rod, a first pin shaft, a first connecting rod and a nut. The threaded rod extends along the axial direction of the aircraft gun and is connected to the housing. The threaded rod is hingedly connected to one end of the first connecting rod through the first pin shaft. The other end of the first connecting rod is hingedly connected to the rotating shaft. The first pin shaft is parallel to the rotating shaft. The threaded rod can be locked by the nut. The claw assembly includes a second connecting rod, a second pin and a claw. The second connecting rod extends radially along the aircraft gun, one end of which is hinged to the rotating shaft, the middle part is hingedly connected to one end of the claw through the second pin, and the other end is used to support the outer surface of the charging piston of the aircraft gun. The second pin is parallel to the rotating shaft and is closer to the axis of the aircraft gun than the rotating shaft. The claw can move parallel to the axis of the aircraft gun relative to the housing, and the grab hook at the other end of the claw is used to be clamped on the rebound lock of the aircraft gun. The grab hook and the first pin are located on both sides of the rotating shaft on the axis of the aircraft gun.

2. The anti-fire device for an aircraft gun in a pod according to claim 1, characterized in that: The shell is in a "convex" shape, and the top of the "convex" is processed with a symmetrical long groove for installing the rotating shaft and a slide groove for the sliding of the claw, and the bottom is processed with grooves extending toward each other to cooperate with the aircraft gun.

3. The anti-fire device for an aircraft gun in a pod according to claim 1 or 2, characterized in that: The shell is provided with a connecting hole for mounting the shell to the aircraft gun.

4. The anti-fire device for an aircraft gun in a pod according to claim 1 or 2, characterized in that: One end of the rotating shaft is provided with a circumferential flange protruding radially outward, and the other end is provided with a groove for receiving an open retaining ring.

5. The anti-fire device for an aircraft gun in a pod according to claim 1 or 2, characterized in that: One end of the threaded rod is provided with a cylindrical portion passing through the first pin shaft, and the other end is processed with a thread matching with the nut.

6. The anti-fire device for an aircraft gun in a pod according to claim 1 or 2, characterized in that: The first connecting rod includes a cylindrical portion and two lugs extending radially and parallelly from the cylindrical portion. The cylindrical portion is used to pass through the rotating shaft, and the lugs are used to connect with the first pin shaft.

7. The anti-fire device for an aircraft gun in a pod according to claim 1 or 2, characterized in that: One end of the second connecting rod is processed with two parallel protrusions for passing through the rotating shaft, and the other end is provided with a vertically extending protrusion for supporting the outer surface of the charging piston of the aircraft gun.

8. The anti-fire device for an aircraft gun in a pod according to claim 1 or 2, characterized in that: One end of the clamping claw is provided with two parallel protrusions for passing through the second pin shaft, and the other end is provided with two grab hooks extending toward each other to clamp the rebound lock of the aircraft gun.

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