FR2653871A1 - WEAPON TUBE ASSEMBLY. - Google Patents

Abstract

The invention relates to a gun tube (10) which, in order to allow recoil of the tube which absorbs the return shock, is mounted axially movable in a tubular cradle (18). In order to obtain an assembly which is free from the lifting effect of the weapon tube (10) in the tubular cradle (18), it is proposed, according to the invention, that the weapon tube (10) has elements of guide (20), disposed laterally on it, with respect to the vertical direction, which extend in the longitudinal direction and guide elements (20), arranged above and below the horizontal direction, on the weapon tube (10), and extending in the longitudinal direction, elements which are made to penetrate radially and slide freely in the longitudinal direction of the tube, in corresponding recesses (22) made in the tubular cradle (18).

Description

1i 2653871 The invention relates to a weapon tube which, in order to allow a

  recoil of the shock absorbing tube, is axially movable in a cradle or

a tubular cradle.

  To date, the usual assemblies of a weapon tube in a tubular cradle have a disadvantageous lifting effect, exerted by blow and causing vibrations of the tube. This lifting effect is caused by the pressure of the gases suddenly rise in the tube when firing a munition. The increase in pressure in the firing chamber of the tube leads, when fired, to a sudden expansion of the tube in this area. On the rear support located in the tubular cradle, the weapon tube is thereby lifted suddenly and then undergoes a significant pulse in the vertical direction. This causes transverse bending vibrations of the tube, which is a drawback. As soon as the projectile has passed the front fulcrum of the weapon tube in the tubular cradle and thus the pressure of the gas has reached this place, the same process manifests itself once again, with the appearance of '' a corresponding pulse in spurts, generating a vibration at

  inside the core or the barrel.

  By DE-A-.23.49.420, we certainly know a cradle assembly for a weapon adjustable in elevation and in azimuth. This provision is however suitable in all cases for small caliber weapons, such as for example automatic rifles, but it is not suitable for large caliber armored guns, for example of 120 mm caliber, because in the case of suspension at the cradle gimbal, you cannot carry out the recoil movement of the weapon tube towards

longitudinal of the tube.

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  Heavy armored guns, their tubes are usually only adjustable in height, are mounted in the turret by means of a trunnion assembly which is clamped on the tubular cradle. The horizontal movement of the weapon is then carried out by means of a rotational movement of

the whole turret.

  This is why the aim of the present invention is to indicate a mounting of a weapon tube inside a cradle, possibly tubular, which is free of lifting effect and also suitable for barrels.

heavy with tanks.

  This problem is solved, according to the invention, by the fact that the weapon tube has, as a tubular core for mounting without lifting in the tubular cradle, guide elements, arranged laterally in the vertical direction by relative to a fixation, on the weapon tube which extend in longitudinal direction and, compared to a fixation,

  guide elements, arranged above and below

  underneath in the horizontal direction, on the barrel, and extending in the longitudinal direction, elements which are formed so as to be able to penetrate and slide freely radially and in the longitudinal direction of the tube, in corresponding recesses, or longitudinal grooves, formed in the tubular cradle. In the case of mounting the tube according to the present invention, the undesirable lifting effect is avoided by the fact that the enlargement of the tube can be carried out without being hampered either vertically or horizontally, the barrel of the weapon not striking in radial direction no fixed stop. The directions of the pressing force and the radial widening of the tube are then

perpendicular to each other.

  Due to the type, according to the invention, of the mounting of the tube, it is prevented that the core (weapon tube) undergoes

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  an additional dynamic bearing force in the event of a partial enlargement by blow following the internal pressure of the gases, force exciting the tube in vibrations, by blow, vertically and / or horizontally. The degree of freedom in the longitudinal direction which is necessary for the retraction of the tube is not

  not disturbed by the measurement according to the invention.

  According to another advantageous characteristic of the invention, the guide elements are produced substantially in the form of sliding rails in the form

  of bars, of rectangular cross section.

  According to another advantageous characteristic of the invention, corresponding linings, in a bearing material having a good capacity for

  sliding, are provided in the recesses.

  According to another advantageous characteristic of the invention, the guide elements and / or the linings are fixed interchangeably on the weapon barrel, as wear parts. According to another advantageous characteristic of the invention, the elements guides are fixed on the side of the gun barrel and that the recesses are provided from the

side of the tubular cradle.

  According to another advantageous characteristic of the invention, the guide elements are produced in one piece from the weapon barrel, being

obtained by machining.

  According to another advantageous characteristic of the invention, the recesses are provided on the side of the gun barrel and that the guide elements are provided on the

side of the tubular cradle.

  According to another advantageous characteristic of the invention, the guide elements, respectively the recesses, extend over the entire length of the

tubular cradle.

  Finally, according to another advantageous characteristic of the invention, the guide elements,

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  respectively the recesses, are provided only by zones, in two zones, preferably a front zone and a rear zone, or in several zones of the section

  of weapon tube which is in the tubular cradle.

  Other purposes, advantages and features of

  the invention will appear on reading the description

  following of embodiments of the invention, made without limitation shown schematically in the accompanying drawing, in which a Figure 1 shows in cross section the negative lifting effect on a gun barrel according to the state of the technique, during firing, FIG. 2 represents an assembly according to the invention of the weapon tube in a tubular cradle, FIG. 3 is an enlarged representation of a guiding device according to the invention, between the tubular cradle and the weapon tube, and FIG. 4 represents another guiding device according to the invention, between the weapon tube and the

tubular cradle.

  In FIG. 1, the reference numeral 10 designates a weapon tube which rests downwards

  against a fixed support 12, shown schematically.

  The fixed support 12 is usually part of a

  cradle, namely a tubular cradle 18 (Figure 2).

  To allow the tube absorbing the return shock to retreat, the weapon tube 10 is mounted axially movable

in the tubular cradle 18.

  When fired, the weapon tube 10 expands suddenly, by a value d (r). Due to the support of the tube against the fixed support 12, the weapon tube "jumps", or lifts up by a value of 2 d (r). This negative lifting effect 16 leads to vibrations

tube junk.

  To eliminate these vibrations of the tube, it is proposed, according to the invention, an assembly of the tube free

  lifting effect in the cradle 18, according to FIG. 2.

2653871

  For this purpose, the weapon tube 10 has guide elements 20 which extend each time, laterally and above and below, in longitudinal direction, which come into contact each time being freely movable radially and in longitudinal direction of the tube, in corresponding recesses 22, respectively longitudinal grooves, formed

in cradle 18.

  The guide elements 20 are suitably produced in the form of sliding rails in the form of bars, preferably having a rectangular section. The sliding rails can for example be made of plastic (PVC, Teflon or similar material), or of coated steel supports

of plastic.

  In FIG. 3, the arrow 24 denotes the axial mobility of the weapon tube 10 (recoil when you fire) inside the weapon tube 18. A free intermediate space 26 of annular shape, which allows an enlargement radial not causing a 3 stroke, is retained between the cradle 18 and the weapon tube 10. This free intermediate space 26 is each time also provided in the radial direction in the recesses 22 for the guide elements 20. Thus, the enlargement of the tube can be carried out without hindrance vertically and horizontally, the directions of the pressing force and of the radial enlargement being

perpendicular to each other.

  The lifting effect is equal to zero (see for this purpose the fixing, indicated by arrows, of the tube in the horizontal and vertical plane, according to Figure 2). FIG. 4 shows the fact that, for another possible embodiment of the invention, provision may be made for corresponding linings 28 in the form of a U, composed of a bearing material having good sliding capacity, such as

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  for example a plastic material (teflon, PVC or similar material), copper, bronze, sintered iron

  impregnated with lead, or the like.

  Advantageously, provision may also be made for the guide elements 20 resembling guide rails and / or the linings 28 to be fixed interchangeably on the weapon tube 10 and / or the cradle 18, in the recesses 22 resembling grooves

  longitudinal, as wearing parts.

  FIGS. 2 and 3 represent an embodiment of the invention, in which the guide elements 20 are fixed on the side of the weapon tube and where the corresponding recesses 22 are made 3

inside the cradle 18.

  The guide elements 20 can at the same time be fixed in a removable manner (unscrewable) on the weapon tube 10, in the form of T-rails, or be machined directly in one piece (according to FIG. 3) from the weapon tube 10 (therefore not removable). In the case of non-removable guide elements located on the weapon tube 10, it is then necessary to provide in the recesses 22 located in the weapon tube 10 U-shaped fittings 28 which are

  interchangeable appropriately.

  It can be seen in the representation according to FIG. 4 that the recesses 22 are made on the side of the weapon tube, if necessary with wear linings 28, and that the guide elements 20 are fixed in a removable manner, respectively interchangeable, on the tubular cradle 18. According to the embodiment and the stresses due to the temperature, the guide elements 20 or / and the wear linings 28 can be fixed on the respective construction element, weapon tube or cradle tubular, for example by gluing, brazing, spot welds or by means of screws, respectively with wedge or clamping screw devices.

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  In the case of small arms installations, having a short tubular cradle, it may be appropriate for the guide elements to extend over the entire length of the tubular cradle. In the case of larger weapon installations, with a comparatively longer tubular cradle, it may on the other hand be advantageous for the guiding elements to be provided only by zones, in two zones, preferably a front zone and a zone. rear, or in multiple areas of the gun barrel section that

found in the cradle.

  The invention thus offers a simple and economical possibility to carry out from the point of view of the manufacturing technique for the mounting of a rear-sighted weapon tube, by avoiding the lifting effect previously observed, which causes vibrations of the tube. .

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Claims (9)

  1.- Weapon tube which, in order to allow a retraction of the tube absorbing the shock in return, is mounted axially movable in a cradle or a tubular cradle, characterized in that the weapon tube (10) has, as that tubular core, for mounting without lifting in the tubular cradle (18), guide elements (20), arranged laterally with regard to a fixing, in the direction of the vertical, on the weapon tube (10) , which extend in the longitudinal direction and, relative to a fastening,   guide elements (20), arranged above and below   underneath in the horizontal direction, on the weapon tube (10), and extending in the longitudinal direction, elements which are constituted so as to be able to penetrate and slide freely radially and in the longitudinal direction of the tube, in corresponding recesses (22), or longitudinal grooves,   formed in the tubular cradle (18). (figure 2).   2.- weapon barrel according to claim 1, characterized in that the guide elements (20) are produced substantially in the form of sliding rails in the form of bars, with cross section. rectangular. (Figure 3.4).   3.- Weapon tube according to claim 1 or 2, characterized in that corresponding linings (28), in a bearing material having a good sliding capacity, are provided in the recesses (22).   4. Weapon tube according to claim 1, 2 or 3 characterized in that the guide elements (20) and / or the linings (28) are fixed interchangeably on the weapon tube (10), in as wearing parts 9 2653871   5.- Weapon tube according to claim 1, 2, 3 or 4, characterized in that the guide elements (20) are fixed on the side of the weapon tube and that the recesses (22) are provided on the cotg of the tubular cradle (Figures 2,3). 6.- weapon tube according to claim 5, characterized in that the guide elements (20) are made in one piece from the weapon tube   (10), being obtained by machining. (figure 3).   7.- Weapon tube according to any one of   claims 1, 2, 3 and 4, characterized in that the   recesses (22) are provided on the side of the weapon barrel and that the guide elements (20) are provided on the side of the tubular cradle (figure 4).   8.- Weapon tube according to any one of   claims i to 7, characterized in that the   guide elements (20), and the recesses (22),   extend over the entire length of the cradle (18).   9.Weapon tube according to any one of   claims 1 to 7, characterized in that the   guide elements (20), respectively the recesses (22), are provided only by zones, in two zones, preferably a front zone and a rear zone, or in several zones of the weapon barrel section which is   found in the tubular cradle (18).