EP1420224B1 - Barrel-type weapon - Google Patents

Abstract

Gun barrel comprises a barrel (2) which is mounted in a first slide bush bearing (5) at the mouth-side end and in a second slide bush bearing at the base part-side end of a mounting barrel (3). The first slide bush bearing has a tube bushing (7) fixed to the barrel and supported in a form-locking manner on the inner wall of the mounting barrel via at least three segmented support bars (14) uniformly distributed along the periphery. The tube bushing has between each adjacent support bar segmented outer recesses (16) and on its inner wall opposite the support bars segmented inner recesses (19) so that the tube bushing is elastically deformed on widening the barrel in such a way that the regions of the tube bushing lying on the barrel are curved outward in the outer recesses and the regions of the barrel not lying on the inner wall of the tube bushing can drift into the inner recesses.

Description

The invention relates to a gun barrel, in which the weapon barrel is slidably mounted in a cradle tube.

Such a tube weapon is for example from the DE 31 48 265 A1 known. In this case, the gun barrel is mounted in two sliding bush bearings, which are arranged at the mouth and at the bottom end of the cradle tube. The disadvantage of such a known Gleitbuchsenlagerung that the gun barrel, for example, a tank cannon, due to the mass rests on the lower inner edge of the bearing and lifts itself up by the tube expansion occurring at firing. This process then leads to vibrations of the barrel and has a negative effect on the departure error of each bullet.

From the DE 39 36 454 A1 It is known to use instead of conventional Gleitbuchsenlager lifting effect-free bearing to avoid the resulting during firing pipe vibrations in which the gun barrel at firing in the radial direction against any fixed stop, so that both in the horizontal and vertical direction, a tube expansion can be done. For storage of the barrel in the cradle four circumferentially uniformly distributed, extending in the direction of the longitudinal axis and designed as slide rails guide rails are provided which engage in corresponding guide grooves of the cradle tube, such that the directions of the support force and the radial pipe expansion respectively perpendicular to each other.

The disadvantage of this storage, especially that the guide rails and grooves extend over both bearings away and therefore a high manufacturing effort is required. In addition, the change of the gun barrel in such a pipe weapon is complicated and therefore time consuming.

From the not pre-published German Patent Application No. 102 26 534.8 Finally, a gun barrel is known in which a lifting effect of the gun barrel is largely avoided that at the mouth side, but preferably also rear side, a sliding bush bearing is arranged on the gun barrel, which includes a pipe sleeve, in which the weapon barrel is arranged lifting effect and the outer surfaces in the cradle tube is slidably mounted in a form-fitting manner (ie with the least possible play) so that an axially and radially sliding guide of the weapon barrel acting independently of one another takes place. In this case, the radial sliding guide of the gun barrel at firing by strip-shaped projections, which engage in corresponding groove-shaped recesses of the pipe bushing and hold the barrel centrally in the pipe socket. A radial widening compensation takes place in turn by existing game specification between gun barrel or a non-rotatably connected to the gun barrel, the strip-shaped projections bearing inner ring and the inner surface of the pipe sleeve.

A disadvantage of this gun barrel, among other things, the relatively complex arrangement of the strip-shaped projections, which must be attached either directly or via an intermediate ring on the gun barrel.

The invention has for its object to provide a slidably mounted in a cradle tube weapon, in which a lifting effect of the gun barrel is largely avoided and neither elaborate guide grooves in the cradle still strips are required on the gun barrel.

This object is achieved by the features of claim 1. Further, particularly advantageous embodiments of the invention disclose the dependent claims.

The invention is based essentially on the idea, at the gun barrel mouth side to arrange a first Gleitbuchsenlager, which comprises a pipe sleeve which is positively supported on the inner wall of the cradle tube over at least three uniformly distributed over the circumference arranged segment-like Abstützstege. The pipe bushing has between the respective adjacent Abstützstegen segment-like outer recesses and on their opposite the Abstützstegen inner wall segment-like recesses, so that upon expansion of the gun barrel, the pipe sleeve deforms elastically, such that the voltage applied to the gun barrel areas of the pipe socket outwards into the Outside recesses are arched and can not emigrate on the inner wall of the pipe sleeve areas of the gun barrel in the inside recesses of the pipe socket.

It has proven to be advantageous if the pipe bushing is supported by four or more than four evenly distributed over the circumference arranged segment-like Abstützstege on the inner wall of the cradle tube, wherein expediently two horizontal and two vertically arranged on the pipe sleeve Abstützstege are provided. However, even more Abstützstege can be provided.

Since the axial guidance of the weapon barrel takes place via the support webs of the tube bushing, it has proved to be advantageous if the support webs are provided with a sliding coating on their surface facing the inner wall of the cradle tube.

Due to a lack of axial rail guide and missing strips on the gun barrel, a lesser manufacturing effort compared to these guns is required. In addition, the proposed storage of the gun barrel is very robust and it is a simple fast barrel change in the field feasible.

• Fig.1 eine schematische Darstellung eines in einem Wiegenrohr gelagerten Waffenrohres mit einem am mündungsseitigen Ende und einem am bodenstückseitigen Ende des Wiegenrohres angeordneten Gleitbuchsenlager;
• Fig.2 einen Querschnitt durch ein Ausführungsbeispiel eines Gleitbuchsenlagers entlang der in Fig.1 mit II-II bezeichneten Schnittlinie;
• Fig.3 einen Längsschnitt durch das in Fig.2 dargestellte Gleitbuchsenlager entlang der dort mit III-III bezeichneten Schnittlinie.

Further details and advantages of the invention will become apparent from the following with reference to figures explained embodiments. Show it:

• Fig.1 a schematic representation of a stored in a cradle barrel with a muzzle end and arranged at the bottom end of the weighing tube Gleitbuchsenlageres;
• Fig.2 a cross section through an embodiment of a Gleitbuchsenlagers along in Fig.1 II-II section line;
• Figure 3 a longitudinal section through the in Fig.2 shown Gleitbuchsenlager along there designated III-III cutting line.

In Fig.1 1 denotes a gun barrel, in which the weapon barrel 2 is mounted axially displaceably in a cradle 3 of a cradle 4. For this purpose, a first plain bush bearing 5 and at the bottom end of the cradle tube 3, a second conventional plain bush bearing 6 are arranged with existing Passungsspielvorgabe at the mouth end of the cradle tube.

The first Gieitbuchsenlager 5 comprises an elastically deformable pipe sleeve 7 and sits with diagonally arranged segment-like bearings 8 play on the gun barrel 2 ( FIGS. 2 and 3 ). The pipe sleeve 7 is bolted by means of locking ring 9, which is screwed by a thread 10 to the gun barrel 2, axially against a tube shoulder 11 of the gun barrel 2. Two anti-rotation 12 prevent rotation of the pipe sleeve 7 to the tube axis thirteenth

On the outer circumference of the pipe sleeve 7 are each two horizontally and two vertically arranged segment-like Abstützstege 14 for longitudinally displaceable mounting of the gun barrel 2 within the cradle 3. The support webs 14 are provided to reduce friction with a sliding coating 15. Between adjacent Abstützstegen 14, the pipe sleeve 7 segment-like outer side recesses 16.

Opposite the outside recesses 16, the segment-like bearing shells 8 are arranged on the inner wall 17 of the pipe bushing 7, while opposite the support webs 14 there are four segment-like inside recesses 19.

Subsequently, the operation of the gun barrel 1 according to the invention and thus also on the operation of the sliding bush bearing 5 will be discussed: After ignition of a cartridge, the gun barrel 2 expands elastically during the passage of the corresponding projectile through the barrel 2. Here, the pipe sleeve 7 elastically deformed in such a way that the respective region of the pipe sleeve 7, which connects radially to the seatless on the gun barrel 2 seated segment-like bearing shell 8 is arched outwards into the outside recesses 16 and the rest, not resting Tube walls in the inside recesses 19 of the pipe sleeve 7 can emigrate. Thus, a transmission of the tube expansion on the segment-like Abstützstege 14 and thus on the cradle tube 3 is avoided. An occurring as in conventional gun weapons lifting effect does not occur.

LIST OF REFERENCE NUMBERS

1

barreled weapon

2

barrel

3

weigh tube

4

cradle

5

first slide bush bearing

6

second sliding sleeve bearing

7

pipe socket

8th

bearing shell

9

lock ring

10

thread

11

tube shoulder

12

twist

13

pipe axis

14

supporting web

15

slide coating

16

outside recess

17

inner wall

19

inside recess

Claims (5)

1. Tube weapon, in which the weapon barrel (2) is mounted such that it can be moved axially in a holding tube (3), having the following features:

   a) the weapon barrel (2) is mounted in a first sliding bush bearing (5), which is arranged at the muzzle end, and in a second sliding bush bearing (6), which is arranged at the base-piece end of the holding tube (3);

   b) the first sliding bush bearing (5) comprises a barrel bush (7) which is attached to the weapon barrel (2) and is supported in an interlocking manner on the inner wall of the holding tube (3) via at least three segment-like supporting webs (14) which are arranged distributed uniformly around the circumference;
   as well as the characterizing features:

   c) the barrel bush (7) has segment-like external recesses (16) between the respectively adjacent supporting webs (14), as well segment-like internal recesses (19) on its inner wall (17) opposite the supporting webs (14), such that, in the event of widening of the weapon barrel (2), the barrel bush (7) is deformed elastically such that those areas of the barrel bush (7) which rest on the weapon barrel (2) are curved outwards into the external recesses (16), and those areas of the weapon barrel (2) which do not rest on the inner wall (17) of the barrel bush (7) can move into the internal recesses (19) in the barrel bush (7).
2. Tube weapon according to Claim 1, characterized in that the barrel bush (7) is supported by four or more than four supporting webs (14), which are arranged distributed uniformly over the circumference, on the inner wall of the holding tube (3).
3. Tube weapon according to Claim 2, characterized in that two supporting webs (14) are in each case arranged horizontally, and two supporting webs (14) are in each case arranged vertically on the barrel bush (7) on opposite sides.
4. Tube weapon according to one of Claims 1 to 3, characterized in that the supporting webs (14) are provided with a sliding coating (15) on their surface facing the inner wall of the holding tube (3).
5. Tube weapon according to one of Claims 1 to 4, characterized in that the barrel bush (7) is provided with bearing shells (8) in those areas in which it rests on the weapon barrel (2).

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