WO2011003510A1 - Barreled firearm - Google Patents

Abstract

The invention relates to a barreled firearm comprising a weapon barrel (2) that is arranged on a breech end (1) of the barreled weapon in a replaceable manner. In order to allow for a fast replacement of the weapon barrel (2) and to prevent that an axial and/or radial clearance can occur between the weapon barrel (2) and the breech end (1) in the assembled state of the barreled firearm, according to the invention the weapon barrel (2) and the breech end (1) are connected by way of a self-locking taper interference fit that can preferably be established and released under hydraulic pressure.

Description

 DESCRIPTION

barreled weapon

The invention relates to a gun barrel with a gun barrel, which is arranged interchangeable on a bottom piece of the particular large-caliber gun barrel.

It is known from DE 199 18 303 C2 to use a bayonet connection in the case of guns with replaceable weapon barrel for fastening the gun barrel to the bottom piece (containing the lock), since such a connection permits particularly rapid replacement of the tube.

A disadvantage of the use of such threaded connections that for opening and closing the bayonet joint both an axial clearance between the gun barrel and the bottom piece must be present as well as a radial play occurs, which at pressure load by firing to a non-optimal support of the gun barrel in the area Bayonet thread leads.

From: Rheinmetall, "Weapons Engineering Paperback", 7th Edition 1985, p 301 f., Is also known, the gun barrel in the bottom piece by a screwed from the front (in the direction of firing) screwed into the bottom piece clamping screw against a collar at the rear end of the pipe pushes to fasten.

The invention has for its object to provide a gun barrel of the type mentioned, in which a quick replacement of the gun barrel is possible, in the assembled state of the gun a axial and / or radial clearance between gun barrel and bottom piece should be avoided.

This object is achieved by the features of claim 1. Further, particularly advantageous embodiments of the invention disclose the dependent claims. Essentially, the invention is based on the idea of connecting the weapon barrel and the bottom piece to one another via a self-locking cone press fit, which can preferably be produced and released under hydraulic pressure.

Such a connection between gun barrel and bottom piece has, inter alia, the advantage that a centering and a radial support in the entire region of the tube bottom piece connection can be achieved. In addition, the connection is free of play and the replacement of the gun barrel can be done with simple tools. In addition, since when shooting by the gas pressure in addition to the axial force always a widening of the gun barrel takes place in the radial direction, which causes an increase in the surface pressure in the cone, the self-locking of the pipe-bottom connection remains.

Since, however, self-locking cone press dressings can solve with a correspondingly high torque load (such as when driving and tower movements of the tank), it has proved to be advantageous if the conical compression bandage is axially braced to avoid unintentional release.

This can be done in a simple manner that a gun barrel surrounding threaded ring is provided, which is partially screwed into the gun barrel mouth facing the front end of the bottom piece and with its located in the bottom piece rear end on a peripheral collar of the barrel axially frictionally supported and in this position is preferably secured against rotation.

Preferably, the threaded ring also serves for the axial displacement of the weapon barrel during its assembly and for applying the axial joining force of the conical-pressing dressing.

To generate the hydraulic pressure for mounting or dismounting of the weapon barrel, a spiral groove is arranged in a particularly advantageous embodiment of the invention between the conical surfaces of the conical-pressing bandage, which is connectable via an arranged in the bottom piece bore with an external hydraulic system, so to a replacement of the gun barrel Hydraulic fluid pressed with the appropriate pressure in the spiral groove and the bottom piece elastically expanded and / or the gun barrel can be compressed elastically.

Thus, in pipe weapons, in which the barrel is axially slidably mounted in a cradle (to allow firing a weapons return), the barrel can be expanded forward through the cradle tube, the inner diameter of the cradle must be so large that the threaded ring can be pushed through these camps. For this purpose, it is provided in a further embodiment of the invention to attach to the gun barrel on the outside of a socket on which the cradle is supported, wherein the outer diameter of the bushing (and thus the inner diameter of the cradle bearing) is greater than or equal to the maximum outer diameter of the threaded ring ,

Further details and advantages of the invention will become apparent from the following, explained with reference to a figure embodiment.

In the figure, a bottom piece 1 with an attached gun barrel 2 a tank gun is shown schematically. At the bottom piece 1 is followed by a front indicated by dashed lines cradle tube 3, in which the gun barrel 2 is mounted longitudinally displaceable to allow a gun barrel return after firing. However, the weapon barrel 2 is not mounted directly in the (not shown) bearings of the cradle tube 3, but a firmly connected to the gun barrel 2 socket. 4

The section of the weapon barrel 2 located in the bottom piece 1 has a frustoconical lateral surface 5, which is supported on a corresponding conically shaped inner surface 6 of the weapon tube receptacle 7 of the bottom piece 1. The inclinations of the two conical surfaces 5, 6 are chosen such that there is a self-locking cone compression dressing.

For axial clamping of this conical cramping association a gun barrel 2 enclosing threaded ring 8 is provided, which is partially screwed into a present in the front end portion of the bottom piece 1 thread 9 and with its located in the bottom piece 1 rear end 10 to a peripheral collar 11 of the barrel 2 frictionally axially supported. In this position, the threaded ring 8 is secured by a engaging in an outer recess 12 securing piece 13 against rotation. The maximum outer diameter of the threaded ring 8 is chosen such that the threaded ring 8 is pushed past after its release by the cradle tube 3, so that it should be slightly smaller than the diameter of the mounted in the corresponding bearings of the cradle 3 socket 4 of the gun barrel. 2

In order to exchange the gun barrel 2 when needed, a spiral groove 14 is provided between the conical surfaces 5, 6 of the conical-pressing dressing, which is connectable via a arranged in the bottom piece 1 radial bore 15 with a (not shown) external hydraulic system, so to a replacement the gun barrel 2 hydraulic fluid pressed with appropriate pressure in the spiral groove 14 and the bottom piece 1 elastically expanded and the gun barrel 2 can be elastically compressed.

For mounting the gun barrel 2 to the bottom piece 1, the gun barrel 2 and the threaded ring 8 are pushed through from the front by the cradle tube 3 until the conical surfaces 5, 6 of gun barrel 2 and bottom piece 1 come to rest.

With the help of a device not shown then the gun barrel 2 is moved from its rest position against the weft direction so far from the cradle tube 3 in a mounting position until the threaded ring 8 protrudes completely from the cradle rear side.

Through the radial bore 15 of the bottom piece 1, a hydraulic fluid is then pressed under high pressure, which is distributed over the spiral groove 14 between the conical surfaces 5, 6 of gun barrel 2 and bottom piece 1 and the bottom piece 1 elastically expands and the barrel 2 elastically compresses.

By screwing the threaded ring 8 into the thread 9 with a corresponding tool, the threaded ring 8 presses with its rear end 10 against the collar 11 on the weapon barrel 2, as a result of which it shifts against the weft direction.

After releasing the pressure the gun barrel 2 and the bottom piece 1 are connected to each other via a self-locking cone press fit and the threaded ring 8 ensures an axial strain of the interference fit. The threaded ring 8 is finally secured with the backup piece 13 against rotation and moved the barrel 2 forward to its rest position.

The dismantling of the gun barrel 2 is essentially in the reverse order, ie: first the gun barrel 2 is moved from its rest position to the mounting position, then the threaded ring 8 is released and by pressing hydraulic fluid into the bore 15, the conical pressing connection between gun barrel 2 and bottom piece. 1 lifted so that the gun barrel 2 can be pulled out of the cradle tube 3 together with the threaded ring 8 on the front side.

Of course, the invention is not limited to the embodiment described above. Thus, for example, the application of the required axial joining force of the conical-pressing dressing instead of a threaded ring with the help of a hydraulic clamping system (for example, according to the principle of a hydraulic nut).

LIST OF REFERENCE NUMBERS

1 bottom piece

 2 gun barrel

 3 cradle tube

 4 socket

 5 lateral surface, conical surface

6 surface, conical surface

7 gun barrel recording

8 middle, threaded ring

9 threads

 10 back end

 11 fret

 12 recess

 13 securing piece

 14 spiral groove

 15 hole

Claims

1. gun barrel with a weapon barrel (2) which is interchangeably disposed on a bottom piece (1) of the gun barrel, characterized in that the weapon barrel (2) and the bottom piece (1) are connected to each other via a self-locking cone press fit, wherein Seen in the weft direction, the front end of the bottom piece means (8) are arranged for bracing the conical-pressing dressing. 2. Pipe weapon according to claim 1, characterized in that for the axial clamping of the conical compression dressing in the bottom piece (1) a weapon barrel (2) enclosing threaded ring (8) is provided which partially in the, seen in the weft direction, front end of the bottom piece (1 ) is screwed and with its in the bottom piece (1) located rear end (10) on a peripheral collar (11) of the gun barrel (2) frictionally axially supported. 3. gun according to claim 1 or 2, characterized in that between the conical surfaces (5, 6) of the conical-pressing a spiral groove (14) is arranged, which via a in the bottom piece (1) arranged bore (15) connectable to an external hydraulic system is, so that to replace the gun barrel (2) hydraulic fluid with the appropriate pressure in the spiral groove (14) pressed and the bottom piece (1) elastically expanded and / or the gun barrel (2) can be elastically compressed. 4. gun according to one of claims 1 to 3, characterized in that in a gun barrel, in which the weapon barrel (2) is mounted axially displaceably in a cradle tube (3), of the cradle tube (3) guided area of the gun barrel (2 ) is surrounded by a bushing (4) fastened on the outside of the weapon barrel (2), wherein the outside diameter of the bushing (4) is equal to or greater than the maximum outside diameter of the threaded ring (8). 5. gun according to one of claims 1 to 4, characterized in that the threaded ring (8) has an outer recess (12) into which a securing piece (13) engages to secure the threaded ring (8) against rotation.