JP3842367B2 - Revolver type cannon shell extrusion method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of pushing out a cartridge case in a revolver type cannon.
[0002]
[Prior art]
The revolver-type cannon completed the push-in operation by intermittently rotating the chamber drum with multiple chambers arranged at equal intervals on the same circumference, and sequentially pushing the ammunition supplied from the outside into the chamber. While the chamber is stopped to coincide with the position of the barrel located in front of the chamber drum, fire the bullet in the chamber and fire a bullet. There is a cartridge case in the chamber after the bullet is fired. In order to continue shooting, it is necessary to release this cartridge out of the chamber. For this reason, when the rear portion of the cartridge case is pushed by the ammunition newly pushed into the chamber, and the new ammunition is completely pushed into the chamber, the cartridge case is released out of the chamber.
[0003]
[Problems to be solved by the invention]
However, such a conventional revolver type cannon has the following technical problems.
[0004]
The cartridge case remaining in the chamber after shooting sticks to the chamber due to the action of high-pressure gas generated during shooting. It is known that this sticking force is greatest at the beginning of the movement of the shell, and decreases rapidly when it starts to move. In the above-described method of discharging the case, it is necessary to increase the strength of the case according to the large sticking force. That is, it is necessary to prevent the cartridge case of new ammunition from being deformed so that the cartridge case is pushed out sufficiently against the sticking force, and the weight and size of the cartridge case inevitably increase. This increases the storage space for ammunition and also increases the loading capacity of ammunition.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of such a conventional technical problem, and the configuration thereof is as follows.
According to the first aspect of the present invention, a chamber chamber drum 3 is rotatably supported by a gun rack 2 having a gun barrel 1 at its front end, and a plurality of chambers 10 are formed on the same circumference of the front portion of the chamber chamber drum 3. This is a method for pushing out a cartridge case of a revolver type cannon that shoots after the ammunition 4 is loaded into the rotating chamber 10 by the ramma mechanism 17 and pushes the cartridge 12 remaining in the chamber 10 out of the chamber 10. ,
An extrusion mechanism 16 that protrudes and operates by pressure gas is arranged behind the chamber 10h where the shell 12 after the shot remains before the new ammunition 4 is loaded. The revolver type is characterized in that by pushing the extrusion mechanism 16 into the extrusion mechanism 16 and projecting the extrusion mechanism 16, the rear surface of the cartridge 12 remaining in the drug chamber 10 h is hit by the extrusion mechanism 16 and kicked forward. This is a method of pushing out the shell of a cannon.
According to the second aspect of the present invention, the push-out mechanism 16 includes a cylinder 6 fixed to the gun rack 2, a slidably fitted to the cylinder 6, a pressure chamber 18, and a chamber 10 h in which a cartridge case 12 remains after shooting. A piston 7 facing the piston rod 7a at the rear, a return spring 8 that elastically urges the return of the piston 7, and a communication path (15, 5) that communicates the pressure chamber 18 and the barrel 1; By introducing a part of the projecting gas generated in the gun barrel 1 during the shooting into the pressure chamber 18 through the communication passages (15, 5), the piston rod 7a is protruded against the elastic force of the return spring 8, 2. The method of pushing out the cartridge case of the revolver type cannon according to claim 1, wherein the cartridge case 12 remaining in the chamber 10h is kicked out by the piston rod 7a.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of a cartridge pusher for a revolver type cannon according to the present invention. In the figure, reference numeral 2 denotes a gun rack, and the chamber drum 3 is rotatably supported by the gun rack 2, and one gun barrel 1 is fixed to the lower front end. The chamber drum 3 is formed with a plurality (eight in this example) of chambers 10 having a circular cross section on the outer peripheral portion of the cylindrical portion 3a at the front thereof. Each chamber 10 is formed at equal intervals so that the barrel 1 and the central axis are parallel. In the chamber 10g located at a predetermined position (lower end) in FIG. 2, the gun barrel 1 shown in FIG. Accordingly, the chamber chamber drum 3 is driven by an intermittent drive mechanism 13 to be described later and rotates intermittently, and the chamber 10f, the chamber 10e, the chamber 10d, the chamber 10c, the chamber 10b, the chamber 10a, When the chambers 10h are respectively moved to the positions of the chambers 10g, the barrel 1 and the central axis coincide with each other.
[0007]
As shown in FIG. 2, a bullet feed hole 2 c is formed in an intermediate portion of the gun rack 2 that is located behind the chamber 10. The ammunition 4 having the bullet 11 and the cartridge case 12 is supplied from the outside through the bullet feed hole 2 c and is sent into the predetermined medicine chamber 10 by the ramper mechanism 17. At the location corresponding to the bullet feed hole 2c, the runner 17a of the runner mechanism 17 takes the most retracted position as shown by the phantom line in FIG. 1, and the ammunition 4 is successively supplied in front of the runner 17a taking this position. . The runner mechanism 17 moves forward and backward to the runner 17a in conjunction with the intermittent movement of the chamber drum 3, and before the shot of the ammunition 4 supplied to the front of the runner mechanism 17, that is, the chamber 10g in which the shot is performed. It is only necessary to push into the chamber 10 and load it before reaching the position and to retreat to a position where it does not interfere with the closing portion 9 of the gun rack 2 during shooting.
[0008]
A closing portion 9 is formed at the center of the lower end portion of the gun rack 2. The closing part 9 closes the rear part of the lower chamber 10g. The closing part 9 is provided with an ignition device 14 for firing.
[0009]
The chamber drum 3 is driven to rotate by an intermittent drive mechanism 13 having a motor. In the illustrated example, since eight chambers 10a to 10h are provided, one step consists of 45 ° rotation of the chamber drum 3 and then stops. The time of the step consisting of rotation and stop, that is, the firing speed, is adjusted by increasing or decreasing the speed of the motor of the intermittent drive mechanism 13.
[0010]
A gas hole 15 is provided through an appropriate portion of the gun barrel 1 and at the rear of the chamber 10h where the cartridge case 12 after the bullet 11 is fired before loading with the new ammunition 4 as shown in FIG. The push-out mechanism 16 is fixed to the gun mount 2 in the position. The pushing mechanism 16 is fixed to the gun mount 2 via a support member 19. The gas hole 15 is formed for the purpose of extracting the high-pressure gas generated in the gun barrel 1 to the outside, and is preferably formed near the base of the gun barrel 1.
[0011]
The push-out mechanism 16 is actually constituted by a cylinder device, and has a cylinder 6 fixed to the gun rack 2 and a piston 7 slidably fitted into the cylinder 6, and a tip portion of the piston rod 7 a. Is slidably supported by the rod cover 6a of the cylinder 6. 6b is an air vent hole. Further, a return spring 8 is interposed between the rod cover 6a and the piston 7 by being compressed. With the piston 7 receiving the elastic force of the return spring 8 and returning as shown by the solid line in FIG. 3, the piston rod 7 a and the rod cover 6 a are slightly spaced from the rear surface 3 b of the cylindrical portion 3 a of the chamber drum 3. The chamber drum 3 and the extrusion mechanism 16 are prevented from interfering with each other. The bottom of the cylinder 6 and the gas hole 15 of the barrel 1 are connected by a conduit 5 so that the pressure chamber 18 defined in the bottom of the cylinder 6 and the inside of the barrel 1 are always in communication.
[0012]
Thus, the pressure gas made of the firing gas generated in the gun barrel 1 with the shooting is introduced into the pressure chamber 18 through the gas hole 15 and the conduit 5 which are communication paths. As a result, the piston 7 is pushed out against the elastic force of the return spring 8, and the piston rod 7 a protrudes from the cylinder 6. The protrusion length S after the piston rod 7a collides with the cartridge case 12 can be changed by adjusting the cross-sectional area of the piston 7, the cross-sectional area of the gas hole 15 and the conduit 5, the elastic force of the return spring 8, and the like. Yes, it is set to have a sufficient length exceeding the gap with the rear surface 3b of the cylindrical portion 3a of the chamber drum 3.
[0013]
A specific example of the runner mechanism 17 will be described with reference to FIGS. The ramper mechanism 17 is configured to drive the ramper 17a by the cam drum 23. The cam drum 23 is fixed to the gun stand 2 in a cantilevered state with the cam drum 23 inserted into the chamber drum 3 from the front (left side in FIG. 4). The chamber chamber drum 3 is rotatably supported by the cam drum 23 at the front end portion at the bearing 27 and at the rear end portion at the bearing 28, and further rotated at the rear end portion by the bearing 29 to the gun mount 2. It is supported freely. Accordingly, the chamber drum 3 is rotatable with respect to the gun mount 2 and the cam drum 23.
[0014]
On the rear side of the cylindrical portion 3a of the chamber chamber drum 3, a plurality (eight) of luma guide grooves 3d are formed in accordance with the chamber 10, and the rammer 17a is slidable in each of the rammer guide grooves 3d. Is engaged. Also, ammunition holding portions 3b are provided on both sides of each luma guide groove 3d in the outer diameter direction as a predetermined interval in the front-rear direction, and a semicircular ammunition guide portion 3c is formed by a pair of opposing ammunition holding portions 3b. Is forming. The ammunition 4 is supplied from the outside through the bullet feed hole 2 c shown in FIG. 2, and is sent to a predetermined ammunition guide portion 3 c that is located behind the medicine chamber 10. At the location corresponding to the bullet feed hole 2c, the runner 17a takes the most retracted position as shown by the phantom line in FIG. 4, and the ammunition 4 is successively supplied in front of the runner 17a taking this position.
[0015]
The cam drum 23 is individually formed with a plurality of (eight in this example) endless helical cam grooves 23b on the rear half thereof, that is, on the outer peripheral surface at a position rearward of the chamber 10, and each cam groove 23b is provided with each ramp. The protrusions 17b of 17a are slidably engaged with each other. Thus, the runner 17a can move back and forth between the ammunition holders 3b behind the chamber 10 along the shape of the cam groove 23b while being guided by the runner guide groove 3d.
[0016]
If the chamber drum 3 is rotated by one step (45 °) in one direction (in the direction of arrow A shown in FIG. 2) by the intermittent drive mechanism 13, each ramper 17a has a groove shape, that is, an inclination of the cam groove 23b to be engaged. Move forward or backward accordingly. Each rammer 17a advances 5 steps between the chambers 10a to 10f shown in FIG. 2 to push the ammunition 4 into the chamber 10 and moves backwards up to 3 steps between the chambers 10f to 10a. To return to the original position. Between the chambers 10f to 10a, it is possible to return the rammer 17a to the original position in one step. In this case, a stop step that does not advance and retreat can be incorporated in each of the rammers 17a. The cannon constitutes a push-through system in which the cartridge case 12 remaining in the chamber 10 is pushed forward and discharged by performing an operation of pushing the ammunition 4 into the chamber 10.
[0017]
Next, the operation will be described.
Now, it is assumed that the ammunition 4 successively supplied from the bullet feed holes 2c is held in the respective ammunition guides 3c or the chemical chambers 10. If the chamber drum 3 is rotated by one step (45 °) in one direction (in the direction of arrow A shown in FIG. 3) by the intermittent drive mechanism 13, each rammer 17a has a groove shape, that is, an inclination of the cam groove 23b to be engaged. Move forward or backward accordingly. FIG. 4 shows an example in which the runner 17a has five steps forward and three steps backward (and stopped) along the cam groove 23b. Ranma 17a, which takes five steps forward while corresponding to the chambers 10a to 10f, performs an operation of pushing the ammunition 4 into the chamber 10 and simultaneously performs an operation of pushing out and discharging the cartridge case 12 remaining in the chamber 10 forward, In addition, the rammer 17a that takes the backward step while corresponding to the chambers 10f to 10a performs the backward operation and returns to the initial position. Accordingly, while the chamber drum 3 is intermittently rotated 360 °, the ramper 17a performs forward and backward (and stop) eight steps.
[0018]
In this machine gun, the ammunition 4 is loaded toward the chamber 10 before the gun barrel 1 is matched, and then fired, and the cartridge 12 remaining in the chamber 10 is pushed forward. Therefore, the retreating operation of the ramper 17a is performed irrespective of the ammunition 4 (or the cartridge case 12).
[0019]
In the state in which the ammunition 4 is supplied from the bullet feed hole 2c to the ammunition guide portion 3c, as described above, the rammer 17a takes the most retracted position as indicated by the phantom line in FIG. Thereafter, as the chamber drum 3 rotates, the rammer 17a starts moving forward, and the ammunition 4 is gradually pushed into the chamber 10 while corresponding to the chambers 10a to 10f, and the loading is completed. While the chambers 10a to 10f are handled, the front of the chamber 10 is still open without being hindered by the barrel 1, so that when the cartridge case 12 remains in the chamber 10, it is pushed forward. New ammunition 4 is loaded.
[0020]
After that, the ammunition 4 is left in the chamber 10 and the rammer 17a moves backward, and the rear portion of the chamber 10g is closed by the closing portion 9 at the position of the chamber 10g. In this state, the ammunition 4 is fired by the action of the ignition device 14, the bullet 11 shown in FIG. 1 is fired from the barrel 1, and the cartridge case 12 remains in the medicine chamber 10. Furthermore, between the chambers 10f to 10a, the rammer 17a is appropriately retracted and returned to the original position indicated by the phantom line in FIG.
[0021]
When the ammunition 4 is fired and the bullet 11 is fired from the barrel 1, and the bullet 11 passes through the position of the gas hole 15 as shown by the phantom line in FIG. The gas is introduced into the pressure chamber 18 of the extrusion mechanism 16 through the gas hole 15 and the conduit 5. As a result, the piston 7 is pushed out against the elastic force of the return spring 8, and the piston rod 7 a protrudes from the cylinder 6. Since the push-out mechanism 16 is located behind the chamber 10h after the bullet 11 is fired, the piston rod 7a protruding from the cylinder 6 by the protruding length S remains in the chamber 10h. Strike the back and kick it out. As a result, the cartridge case 12 is discharged from the chamber 10h to the outside. Even when the cartridge case 12 is not discharged from the chamber 10h to the outside, the cartridge case 12 that has adhered to the chamber 10h due to the static frictional force moves slightly due to the shooting. It is easily discharged to the outside by push-through associated with loading of the ammunition 4.
[0022]
Thereafter, when the bullet 11 is separated from the gun barrel 1, the pressure of the projecting gas in the gun barrel 1 rapidly decreases. As a result, the piston 7 that receives the elastic force of the return spring 8 returns to the original position. The projecting gas in the pressure chamber 18 is discharged into the barrel 1 through the conduit 5 and the gas hole 15. The protrusion operation and the return operation of the piston 7 are performed while the chamber drum 3 is stopped after the indexing rotation. After the piston 7 returns, the chamber drum 3 rotates intermittently and the next bullet 11 is fired. As described above, the rammer 17a is going to return to the original position by appropriately stepping back between the chambers 10f to 10a. Therefore, by disposing the extrusion mechanism 16 in accordance with the chamber 10h stopped after intermittent rotation between the chambers 10g to 10a, the extrusion mechanism 16 and the ramper 17a do not interfere with each other.
[0023]
By the way, in the above-described one embodiment, the pushing mechanism 16 is configured by the cylinder device, but instead of the cylinder device, a bellows is arranged, and the gas generated in the gun barrel 1 is guided into the bellows. It is also possible to construct the cartridge case 12 to be kicked out in the medicine chamber 10h by the extending bellows. Further, the protrusions 17b of the respective runners 17a are slidably engaged with the cam grooves 23b of the cam drum 23, and the ammunition holding portions are formed along the groove shape of the cam grooves 23b while the rammers 17a are guided by the rammer guide grooves 3d. It was made to move back and forth between 3b. However, the ramper mechanism 17 may be a loading mechanism that is operated by a driving mechanism that is separate from the intermittent driving mechanism 13 to push the ammunition 4 into the predetermined chambers 10a to 10f before shooting. .
[0024]
【The invention's effect】
As will be understood from the above description, the method for pushing out the cartridge case of the revolver type cannon according to the present invention can provide the following effects.
(1) When pushing out the cartridge case from the chamber, an initial cartridge case pushing operation that requires the greatest force is performed by an extrusion mechanism that is operated by the firing gas pressure generated in the gun barrel. Thereby, the force required for the subsequent extrusion of the cartridge case becomes small. Therefore, even if the cartridge case is not completely removed from the chamber due to the action of the push-out mechanism and the cartridge case is pushed out by the ammunition, the force applied to the ammunition can be small, so the driving force of the rammer mechanism can be reduced. . As a result, it is possible to satisfactorily achieve both the prevention of the problem that the newly loaded ammunition is deformed and the shooting becomes impossible and the strength of the cartridge is reduced to reduce the weight and size.
[0025]
(2) Since the force for pushing out the cartridge by the Ranma mechanism is unnecessary or small, the strength of the Ranma mechanism that pushes the ammunition into the chamber can be small. Accordingly, the weight of the ramp mechanism can be reduced, and troubles such as wear and seizure are reduced.
(3) The amount by which the cartridge is pushed by the push-out mechanism may be small and can be quickly returned after the bullet has left the gun barrel, so there is no need to reduce the firing speed for the operation of the push-out mechanism. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a cannon according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along the line III-III in FIG.
FIG. 4 is a cross-sectional view showing a cannon having a ramp mechanism, with a cam groove partially omitted.
5 is an enlarged cross-sectional view of the main part of FIG.
[Explanation of symbols]
1: gun barrel, 2: gun rack, 3: chamber drum, 4: ammunition, 5: conduit (communication path), 6: cylinder, 7: piston, 7a: piston rod, 8: return spring, 10a-10h: medicine Chamber, 12: cartridge case, 13: intermittent drive mechanism, 15: gas hole (communication path), 16: extrusion mechanism, 17: rammer mechanism, 18: pressure chamber.

Claims (2)

A chamber drum (3) is rotatably supported by a gun rack (2) having a gun barrel (1) at the front end, and a plurality of chambers (10) are arranged on the same circumference at the front of the chamber drum (3). After the ammunition (4) is loaded into the rotating chamber (10) by the ramma mechanism (17), shooting is performed, and the cartridge case (12) remaining in the chamber (10) is moved into the chamber (10). ) How to push out the revolver type cannon to push out,
An extrusion mechanism (16) that protrudes and operates by pressure gas is disposed behind the chamber (10h) where the shell (12) after shooting is left before loading with new ammunition (4). 1) A part of the propelling gas generated in the inside is introduced into the extrusion mechanism (16) and the extrusion mechanism (16) is operated to project, so that the extrusion mechanism (12) on the rear surface of the cartridge case (12) remaining in the chamber (10h) 16) A method for pushing out a cartridge case of a revolver type cannon characterized by hitting it according to 16) and kicking it forward .   The push-out mechanism (16) is slidably fitted into the cylinder (6) fixed to the gun rack (2) to slidably fit into the pressure chamber (18), and the shell (12 ) With the piston rod (7a) facing the rear of the chamber (10h), a return spring (8) for elastically energizing the return of the piston (7), a pressure chamber (18), And a communication passage (15, 5) communicating with the inside of the gun barrel (1), and a part of the propelling gas generated in the gun barrel (1) at the time of shooting is passed through the communication passage (15, 5) to the pressure chamber (18). The piston rod (7a) is pushed out against the elastic force of the return spring (8), and the cartridge case (12) remaining in the chamber (10h) is kicked by the piston rod (7a). The method of pushing out a cartridge case of a revolver type cannon according to claim 1, wherein

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