EP2261588B1 - Lagerungsvorrichtung eines Geschützturms - Google Patents

Lagerungsvorrichtung eines Geschützturms Download PDF

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Publication number
EP2261588B1
EP2261588B1 EP20100290284 EP10290284A EP2261588B1 EP 2261588 B1 EP2261588 B1 EP 2261588B1 EP 20100290284 EP20100290284 EP 20100290284 EP 10290284 A EP10290284 A EP 10290284A EP 2261588 B1 EP2261588 B1 EP 2261588B1
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EP
European Patent Office
Prior art keywords
turret
bearing
ring
integral
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20100290284
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English (en)
French (fr)
Other versions
EP2261588A1 (de
Inventor
Jean Carriere
Jean-Noël PATRY
Antoine Saunier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nexter Systems SA
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Nexter Systems SA
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Filing date
Publication date
Application filed by Nexter Systems SA filed Critical Nexter Systems SA
Publication of EP2261588A1 publication Critical patent/EP2261588A1/de
Application granted granted Critical
Publication of EP2261588B1 publication Critical patent/EP2261588B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A27/00—Gun mountings permitting traversing or elevating movement, e.g. gun carriages
    • F41A27/06—Mechanical systems
    • F41A27/08—Bearings, e.g. trunnions; Brakes or blocking arrangements
    • F41A27/12—Brakes or locks for blocking traversing or elevating gear in a fixed position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A27/00—Gun mountings permitting traversing or elevating movement, e.g. gun carriages
    • F41A27/06—Mechanical systems
    • F41A27/22—Traversing gear

Definitions

  • the technical sector of the present invention is that of pointing devices in the bearing of a turret carrying a weapon system.
  • a turret is generally placed above a fixed or mobile chassis, and carries various equipment, such as a weapon.
  • the turret is connected to the frame by a circular bearing vertical axis.
  • This bearing bearing typically comprises a ring integral with the frame, a ring integral with the turret and rolling elements arranged between the two rings. These rolling elements may be balls or rollers.
  • this bearing necessarily has a certain clearance both axial and radial.
  • This game allows the turret to move relative to the chassis.
  • Such displacement produces a mechanical shock when firing a munition.
  • This mechanical shock generates a broad spectrum vibration.
  • the displacement is carried out according to a complex surface, toric in the case of balls, or conical in the case of rollers, and out of a plane parallel to the axis of the weapon.
  • This displacement can cause an error of pointing of the weapon all the more important that the game is important and that the firing of the ammunition creates a strong impulse with regard to the mass of the turret.
  • the patent FR-1241877 describes a pointing device bearing a turret carrying a weapon system. This turret pivots relative to the vehicle body with rolling balls interposed between the turret and a ring secured to the body. A pad / pad system is used to lock the turret in rotation. Nowhere in this document is it intended to reduce bearing sets. It is only implicitly that one could deduce the reduction of rolling games regardless of the location of the turret. The position of a specific area where the rolling play is thwarted is not described.
  • the present invention aims to solve this problem by providing a pointing device incorporating means for suppressing, or at least reducing in large proportions, the play (axial and radial) of the bearing bearing in a predetermined angular zone of the turret, which zone corresponds to that at the level of which is the weapon system. This has the effect of minimizing the movement of the weapon system during firing and thus improves the accuracy of the shot.
  • This backlash is equivalent to ensure a radial force in the opposite direction of a ring to the other between the two rings to establish a prestress on the rolling elements (balls or rollers).
  • the pressure means comprises an adjustable means allowing a permanent torsion of the torsion shaft relative to the support.
  • the pressure means comprises motorized means for controlling torsion of the torsion shaft relative to the support.
  • the motorized means may be connected to the torsion shaft by a gearbox. It may also include a brake or a locking means.
  • the motorized means may be associated with an angular measuring means that can measure the torsion angle of the torsion shaft.
  • the invention also relates to a turret comprising a such pointing device in the field.
  • the turret may include means for locally reducing the bearing play, single means disposed in the vicinity of the longitudinal axis of the turret.
  • the turret may comprise two means for locally reducing the bearing play, means disposed symmetrically with respect to the longitudinal axis of the turret.
  • a turret bearing bearing 23 disposed between the frame 1 and the turret 2 of a vehicle (not shown).
  • This bearing consists of an inner ring 11 secured to the chassis 1 of the vehicle and an outer ring 12 integral with the turret 2, rings between which rolling elements 16 are inserted. These rolling elements 16 may be balls or cylinders.
  • the two rings 11 and 12 are substantially parallel horizontal crowns.
  • the rolling elements 16 arranged between the two rings allow a vertical axis 20 of rotation of a ring 12 (secured to the turret) relative to the other ring 11 (secured to the frame).
  • the bearing bearing 23 thus allows the pivoting along a vertical axis of the turret 2 relative to the frame 1. This ensures the pointing in the bearing of a weapon (not shown) secured to the turret.
  • the two rings 11, 12 are of course of different diameter.
  • the rings 11 and / or 12 may consist of several elements (rings + spacers + screws).
  • a means 19 of play catching according to the invention to reduce the clearance between these two rings in a predetermined angular zone Z of the turret.
  • This means is fixed to the frame 2 by a connecting means 25 and is defined so as to be able to push on the inner ring 11 (arrow P).
  • FIG. 2 there is shown a partial view showing the structure of the means 19 and its integration between the two inner rings 11 and outer 12 in a high position, that is to say towards the aerial part of the turret.
  • This means 19 comprises a housing 14 integral with a support 3 rigidly fixed to the turret 2 and / or to the outer ring 12.
  • the housing 14 carries a pressure roller 6 which is arranged so as to remain in constant abutment against the inner ring 11, including when the outer ring 12 rotates relative to the inner ring about the axis of rotation 20 of the bearing bearing 23, without disturbing said rotation.
  • the roller 6 will have a cylindrical outer surface that can roll on the inner cylindrical surface of the ring 11.
  • the roller may be constituted by a pinion bearing an external toothing cooperating with a toothing integral with the inner ring 11.
  • the roller 6 is supported by a shaft 10 rotatably mounted in the housing 14 via a bearing or a bearing 8.
  • the shaft 10 can be rotated by a motor 17 and via a reducer 15 as will be explained below.
  • the pressure roller 6 is connected to the shaft 10 by means of a bearing 7 itself integral with an eccentric 5 integral with the shaft 10.
  • a bearing 7 is preferable to that of a bearing for the application of the device according to the invention.
  • the pressure roller 6, in constant support on the ring 11, can rotate about an axis 18, parallel to the vertical axis of rotation 20 of the bearing bearing, and parallel and offset with respect to the shaft 10.
  • the facing surfaces of the roller 6 and the track of the ring 11 can be smooth or meshed with each other.
  • the eccentric 5 and the axis 10 constitute a pressure means 4 that can push the roller 6 against the inner ring 11.
  • the direction of the pressure thus exerted by the pressure means 4 on the pressure roller 6 is such that the support exerted by the pressure roller 6 on the inner ring 11, is exerted to bring the two rings 11 and 12 together.
  • the pressure exerted on the inner ring 11 tends to bring it closer to the outer ring 12, tightening the two rings 11 and 12 towards each other and against the rolling elements 16.
  • This pressure eliminates any play that may be present between the outer ring 12 and the rolling elements 16 and between the rolling elements 16 and the inner ring 11 , at the right of the device.
  • the position of the pressure means 4 is advantageously adjustable.
  • the eccentric 5 can be rotated by the axis 10 under the action of the motor 17. The eccentric 5 then drives the pressure roller 6 towards or away from the inner ring 11.
  • the eccentricity value of the eccentric 5 for the angular pivoting position of the roller 6 chosen here).
  • the shaft 10 for adjusting the eccentric 5 by rotation will be a torsion shaft.
  • the rotation of the shaft 10, driving the eccentric 5 causes the contacting of the pressure roller 6 on the inner ring 11.
  • a continuation of this rotation beyond the support causes a torsion of the 10 about its axis and creates an increasing bearing force of the pressure roller 6 on the inner ring 11.
  • the pressure force is determined so as to be sufficient to cancel the internal clearance of the bearing bearing 23 in a desired portion Z of a circular arc of the bearing bearing, centered at the right of the means 19.
  • the figure 2 also illustrates an embodiment said active because a given torsion angle can be applied to the torsion shaft 10, controlled by the motor 17, to create an adjustable pressure stress at will.
  • the motor 17 is engaged on the shaft 10 (via the gearbox 15). By applying a rotation of the shaft 10 with the aid of this motor in combination with the pressure roller, it induces a torsion of this shaft.
  • This torsion motor 17 is mounted integral with the casing 14. It thus makes it possible to control a torsion angle at will of the shaft 10.
  • This embodiment makes it possible to exert the support of the pressure roller 6 (and the play catch of the bearing 16) only at certain moments, for example during the firing phases, and to deactivate this support afterwards.
  • a device that is more tolerant to manufacturing, integration and use dispersions is obtained. Indeed, the level of the pressure force can be controlled and adapted in real time.
  • the gearbox 15 which is an irreversible means makes it possible to lock the torsion shaft to the desired angular value, even when the motor 17 is deactivated.
  • the active pressure stress is not likely to hinder the rotation of the bearing bearing 23 since it is applied nominally only outside the rotation phases. It can therefore possibly be greater than that of a passive device always exerting a support effort.
  • FIG 3 another embodiment of the means 19 according to the invention is shown.
  • the assembly is called internal, that is to say that the means 19 according to the invention is mounted in the inner part of the turret or at the turret basket below the frame 1.
  • the same elements are identified by the same references.
  • This figure shows a different structure of the mounting of the shaft 10. The latter is guided at one end by the bearing 8 and secured at its other end torsion means 13.
  • This embodiment is said to be passive because a given and permanent torsion angle is applied to the shaft 10, in order to create a permanent pressure stress of the pressure roller 6 on the inner ring 11.
  • This means 13 is for example constituted of a piece, integral with the shaft of torsion 10 rotating about its axis, and rotatable relative to the housing 14 according to this same axis, in order to adjust and impose a torsion angle to the shaft 10, and can then be immobilized angularly relative to the housing 14 to maintain said torsion angle.
  • a wheel / worm gear interconnects a pinion 13 integral with the shaft 10 and a screw 24 secured to the casing 14.
  • the pressure is determined and activated during assembly during the integration of the turret 2.
  • the pressure is permanent in operation and it is removed only during the maintenance phases, for example during a removal. of the turret 2.
  • an active means 19 is generally less cumbersome than its passive counterpart, due to less dimensioning associated with less stress on the most important mechanical forces, the means being less often active and not being active during the phases. more restrictive (transport, rolling, observation ).
  • the torsion shaft 10 in order for the prestressing level to be maintained at a satisfactory level, the torsion shaft 10 must be sufficiently long in a passive system, since this shaft must be capable of deforming the whole extent of the geometrical defects of the assembly as well as than the inter-axis fluctuations of the two rings when the tank is in a slope and / or cant situation. Passive means according to the figure 3 is therefore more bulky in length.
  • the motor 17 may be a rotary axis motor aligned with the axis of the shaft 10 or a linear motor or cylinder acting on a connecting rod integral with the shaft 10 and transverse thereto.
  • the motor 17 can remain controlled during its activation phases or be relayed by a brake or a locking means acting on the torsion shaft 10 once the torsion angle / pressure achieved.
  • Such a brake or locking means may take up the forces between the support 3 and the torsion shaft 10 in order to relieve the motor 17.
  • an angular measuring means 9 is provided capable of measuring the torsion angle of the torsion shaft 10.
  • a pressure force sensor or torque of the shaft 10 can be used.
  • the motor can be driven or not. For example, it will be possible to power the motor for a well-defined period to obtain a "locked rotor" operating point.
  • the means 19 according to the invention advantageously allows to use a bearing bearing 23 of lower quality, having a greater radial and / or axial internal clearance level, and therefore less expensive.
  • the invention also makes it possible to reduce the occurrence of occurrence of high levels of torque in the presence of manufacturing imperfections of the bearing 23 or in the presence of mechanical deformations induced by the frame 1, for example during an evolution in all terrain, compared to the torque capacity of the engine of deposit.
  • the architecture “high” ( figure 2 ) or the “low” architecture ( figure 3 ) can be indifferently compatible with an active or passive embodiment.
  • the influence of the game on a possible disturbance of the shot is maximum at the front, relative to the weapon, at a zone Z situated in the vicinity of a longitudinal axis OX of the turret (projection in the plane of the bearing 23 of the firing axis of the weapon system).
  • the weapon rotates with the turret 2.
  • the means 19 is advantageously secured to the turret 2 and its position relative to the weapon is fixed.
  • a means 19 according to the invention eliminates the game angularly where it is located and a certain angular range 21 in the bearing which is centered around this position.
  • an assembly according to the invention with a single means 19 positioned on the bearing 23.
  • this means 19 is advantageously placed at the front of the turret 2, on the longitudinal axis OX of the turret 2, so below the weapon .
  • the axis OX corresponds to the projection in the plane of the bearing 23 of the axis of the weapon.
  • the clearance is removed over an angular range 21.
  • a mounting according to the invention is shown with two means 19.
  • the two means 19 are advantageously placed in front of the turret 2, symmetrically with respect to the longitudinal axis OX of the turret 2 (projection of the axis of the weapon).
  • the spacing between the two means 19 is reduced to the minimum in order to provide the function of eliminating the game.
  • the use of two means 19 in parallel is advantageous in that it allows the removal of the game on a larger scale. wide angular range 22 as beach 21 of the figure 4 .
  • Another advantage of the parallel arrangement is not to occupy a large volume under the weapon. This volume is most often allocated to the management of the movement in the weapon's site (motorization, toothed sector, shield and deflection of the weapon itself in site).
  • the spacing between the two means 19 is thus advantageously such that these means are both arranged at the outer limit of a volume allocated to the management of the movement in site and the deflection in the weapon's site.
  • the support 3 and the housing 14 may constitute a single piece.
  • the means for locally reducing the bearing play at the zone (Z) situated in the vicinity of a longitudinal axis OX must accompany the pivoting movement of the turret. He is therefore always supportive of the turret.
  • Figures 6 and 7 another embodiment of the invention in which the turret is secured to the inner ring 11 of the bearing 23.
  • the figure 6 shows schematically the implementation of the means 19 for locally reducing the clearance of the bearing 23 at the zone (Z) located in the vicinity of the longitudinal axis OX.
  • the means 19 must be secured to the turret and therefore to the inner ring 11 of the bearing to which it is fixed by means of connection 25. When this means 19 is thus fixed to the inner ring 11, it is no longer possible to bring the rings from each other as access to the outside of the ring external 12 fixed is impossible (there would be mechanical interference during the pointing in bearing).
  • the means 19 is fixed at a zone Z 'symmetrical to the zone Z with respect to the axis 20 and this means 19 is defined so that it moves apart the rings 11 and 12 from one of the other.
  • the means 19 will therefore be defined so as to be able to push on the outer ring 12 (arrow P ').
  • the figure 7 gives an example of embodiment of such means 19.
  • This means 19 is broadly similar to that described above with reference to the figure 2 . However, the mounting here is symmetrical with respect to the plane of the bearing 23.
  • the pressure roller 6 is again connected to the torsion shaft 10 via a bearing 7 itself integral with an eccentric 5 integral with the shaft 10. Thus the roller 6 can rotate freely relative to the tree 10.
  • the pressure roller 6 is in constant abutment on the internal profile of the outer ring 12.
  • This support is done here via a ring 26 which is integral with the frame 2.
  • the support can be assured through smooth surfaces or by teeth.
  • the roller 6 can rotate about an axis 18, parallel to the vertical axis of rotation 20 of the bearing bearing, and parallel and offset from the shaft 10.
  • the eccentric 5 and the axis 10 constitute a means pressure 4 can push the roller 6 against the outer ring 12, thereby increasing the internal game rolling in the zone Z 'which has the effect of reducing this game at the zone Z adjacent to the axis of fire of the weapon system.
  • the device represented in figure 7 is an active device in which the torsion of the shaft 10 is controlled by a motor 17. It is of course possible to realize such means of reducing play 19 in a passive form similar to that of the figure 3 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)

Claims (9)

  1. Vorrichtung zum Richten in horizontaler Richtung eines ein Waffensystem tragenden Drehturms, wobei die Vorrichtung ein horizontales Wälzlager (23) für den Drehturm umfasst, welches von zwei Ringen (11, 12) und Wälzelementen (16) gebildet wird, wobei die Vorrichtung ein Mittel (19) umfasst, das fest mit dem Drehturm verbunden ist und es ermöglicht, das Spiel des Wälzlagers (23) im Bereich einer Zone (Z), welche sich in der Nähe einer Längsachse OX des Drehturms befindet, welche der Projektion der Achse des vom Drehturm getragenen Waffensystems in die Ebene des Wälzlagers (23) entspricht, örtlich zu reduzieren, wobei das genannte Mittel (19) umfasst:
    - einen Träger (3), welcher an einem Gehäuse (14) befestigt und mit einem ersten der beiden Ringe (11, 12) fest verbunden ist,
    - eine Andruckrolle (6), welche von dem genannten Träger (3) drehbar um eine Achse (18), welche parallel zur Achse (20) des horizontalen Wälzlagers verläuft, getragen wird, um auf dem anderen Ring abrollen zu können,
    - ein Druckmittel (4), welches geeignet ist, die Andruckrolle (6) derartig gegen den anderen Ring zu drücken, dass die beiden Ringe (11, 12) im Bereich der Zone zur Spielreduktion (Z) angenähert werden, wobei das Druckmittel einen Exzenter (5) umfasst, welcher zwischen dem Träger (3) und der Andruckrolle (6) angeordnet ist,
    dadurch gekennzeichnet, dass das Druckmittel (4) eine Torsionswelle (10) umfasst, welche in dem Gehäuse (14) zwischen dem Träger (3) und dem Exzenter (5) angeordnet ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Druckmittel (4) ein einstellbares Mittel (13) umfasst, welches es ermöglicht, die Torsionswelle (10) bezüglich des Trägers (3) permanent zu verdrehen.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Druckmittel (4) ein Motormittel (17) umfasst, welches es ermöglicht, eine Verdrehung der Torsionswelle (10) bezüglich des Trägers (3) zu betätigen.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Motormittel (17) mit der Torsionswelle (10) über ein Untersetzungsgetriebe (15) verbunden ist.
  5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Motormittel (17) eine Bremse oder ein Verriegelungsmittel umfasst.
  6. Vorrichtung nach irgendeinem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass das Motormittel (17) mit einem Mittel zur Winkelmessung (9) verknüpft ist, welches den Torsionswinkel der Torsionswelle (10) messen kann.
  7. Drehturm umfassend eine Vorrichtung zum Richten in horizontaler Richtung nach irgendeinem der Ansprüche 1 bis 6.
  8. Drehturm nach Anspruch 7, bei dem ein Ring (11) des Wälzlagers (23) sich innerhalb eines Chassis (1) befindet und fest mit dem Chassis (1) verbunden ist, wobei der andere Ring (12) sich außerhalb des Drehturms (2) befindet und fest mit dem Drehturm (2) verbunden ist, wobei der Drehturm dadurch gekennzeichnet ist, dass er ein Mittel umfasst, welches es ermöglicht, das Spiel des Wälzlagers (23) örtlich zu reduzieren, wobei das einzige Mittel in der Nähe der Längsachse OX des Drehturms (2) angeordnet ist.
  9. Drehturm nach Anspruch 8, bei dem ein Ring (11) des Wälzlagers (23) sich innerhalb eines Chassis (1) befindet und fest mit dem Chassis (1) verbunden ist, wobei der andere Ring (12) sich außerhalb des Drehturms (2) befindet und fest mit dem Drehturm (2) verbunden ist, wobei der Drehturm dadurch gekennzeichnet ist, dass er zwei Mittel umfasst, welche es ermöglichen, das Spiel des Wälzlagers (23) örtlich zu reduzieren, wobei die Mittel symmetrisch in Bezug auf die Längsachse (OX) des Drehturms (2) angeordnet sind.
EP20100290284 2009-06-11 2010-05-31 Lagerungsvorrichtung eines Geschützturms Active EP2261588B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0902827A FR2946739A1 (fr) 2009-06-11 2009-06-11 Dispositif de pointage en gisement d'une tourelle

Publications (2)

Publication Number Publication Date
EP2261588A1 EP2261588A1 (de) 2010-12-15
EP2261588B1 true EP2261588B1 (de) 2014-03-19

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EP20100290284 Active EP2261588B1 (de) 2009-06-11 2010-05-31 Lagerungsvorrichtung eines Geschützturms

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EP (1) EP2261588B1 (de)
FR (1) FR2946739A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1241877A (fr) * 1959-08-14 1960-09-23 Anciens Etablissements Panhard Perfectionnements apportés aux mécanismes de commande des tourelles pivotantes de véhicules blindés
CH408716A (de) * 1963-08-30 1966-02-28 Oerlikon Buehrle Holding Ag Feststellvorrichtung für um eine Achse schwenkbare Teile von Lafetten
DE3108368C2 (de) * 1981-03-05 1983-01-05 Pietzsch, Ludwig, Dr.-Ing., 7500 Karlsruhe Stabilisierungs- und Richtantrieb für einen Drehturm eines Fahrzeuges
DE3913902C2 (de) * 1989-04-27 1997-07-10 Wegmann & Co Gmbh Kampffahrzeug, insbesondere Kampfpanzer

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FR2946739A1 (fr) 2010-12-17
EP2261588A1 (de) 2010-12-15

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