EP0412908B1 - Trunnion for the elevation axle of a gun cradle - Google Patents

Trunnion for the elevation axle of a gun cradle Download PDF

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Publication number
EP0412908B1
EP0412908B1 EP90402267A EP90402267A EP0412908B1 EP 0412908 B1 EP0412908 B1 EP 0412908B1 EP 90402267 A EP90402267 A EP 90402267A EP 90402267 A EP90402267 A EP 90402267A EP 0412908 B1 EP0412908 B1 EP 0412908B1
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EP
European Patent Office
Prior art keywords
mount
casing
nut
support plate
elevation
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.)
Expired - Lifetime
Application number
EP90402267A
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German (de)
French (fr)
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EP0412908A1 (en
Inventor
Jean-Philippe Patrice Bernard Allais
Alain Robert Guillermond
Pascal Gérard Rouyer
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Safran Transmission Systems SAS
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Hispano Suiza SA
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Publication date
Application filed by Hispano Suiza SA filed Critical Hispano Suiza SA
Priority to AT90402267T priority Critical patent/ATE101261T1/en
Publication of EP0412908A1 publication Critical patent/EP0412908A1/en
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Publication of EP0412908B1 publication Critical patent/EP0412908B1/en
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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

Definitions

  • the present invention relates to a shaft journal for the elevation of a plate on site on an armament mount.
  • the invention aims to achieve such a structure.
  • the invention also aims to provide a journaling structure which allows the self-alignment of the weapon support on the carriage as well as the catching up of variations in center distance of the carriage, due to the severe temperature variations that may undergo such a system in its operational use.
  • the invention therefore relates to a shaft journal for the journaling in elevation of a plate on a cocking carriage, said journal being carried by a site axis mounted tightly in the inner ring of a bearing disposed at the inside the bore of a housing secured to the carriage, characterized in that the outer ring of the bearing is slidably mounted inside the housing, in that an elastic means is interposed between the bearing and the bottom of the housing bore, and in that the trunnion is equipped with a mechanical means capable of longitudinally displacing the site axis against the elastic means to release the axis of the trunnion partially in the bore of the housing during mounting of the plate on the carriage.
  • the mechanical means can be made inactive as soon as the plate is in place on the mount and secured to the pin, to allow axial sliding of the plate on the mount against the elastic means.
  • the mechanical means is constituted by a screw-nut system formed by the combination of a threaded end of the site axis passing through the bottom of the housing and of a nut carried by said end threaded, said nut being able to bear externally against the bottom of the housing.
  • the deployable mount incorporating the shaft pin according to the invention is disposed on the roof 1 of a vehicle (itself not shown).
  • the carriage has at its base a circular plate 2 rotating around a bearing axis ZZ on an extension 3 by means of a horizontal bearing 4.
  • the extension comprises a toothed circular 5 on which a pinion 7 of a field encoder 6
  • the plate 2 comprises a rectangular armored hatch 8 opening by tilting backwards to serve as a passage for the servant of the lookout from inside the vehicle.
  • the tray 2 includes four boxes serving as bearings for a deployable chair, itself made up of two lyres, one front 9 and the other rear 10.
  • two front boxes 11 serving as a bearing for the front lyre
  • two rear boxes 12 serve as bearings for the rear lyre.
  • the front left 11 and rear 12 boxes are symmetrical with the right front and rear boxes with respect to a diametrical axis of the turntable.
  • Each front 9 and rear 10 lyre consists of a bent U-shaped tube whose base (respectively 9a, 10a) is provided with yokes (respectively 9b, 10b) equipped with articulation axes around which the lyres 9 rotate and 10.
  • left 9c, 10c and right 9d, 10d are mounted, articulated on ball joints of the horizontal crosspieces (respectively left 13a and right 13b).
  • the assembly formed by the lyres 9 and 10 and the crosspieces 13a and 13b constitutes the articulated chair whose deployment is ensured by the form in two deformable parallelograms constituted by the plate 2, the left uprights 9c, 10c of the lyres and the crosspiece 13a (respectively the uprights 9d, 10d and the cross 13b).
  • the plate 14 On the chair thus formed is mounted the plate 14, support for the weapon (s) 15.
  • the plate 14 is rotatably mounted in elevation on an elevation axis YY materialized by pins 111 of the crosspieces 13a, 13b, said site axis being arranged in the vertical plane containing the axis of deposit ZZ.
  • the plate 14 supports two weapons 15 placed laterally on either side of the servant. It also supports a sighting device 17 in front of the servant.
  • FIG. 5 A general description of a mount incorporating the pin of site axis according to the invention having thus been made by way of example, reference will now be made to FIG. 5 for the description of the device according to the invention itself, ensuring the rotation in elevation of the plate 14. To ensure this site rotation, two pins 111 carried by axes 112 are screwed by screws 113 on the plate 14.
  • the housing 114 of generally cylindrical tubular shape is welded into the crosspiece 13a (or 13b).
  • the housing includes a first bore 116 open towards the inside of the carriage, the bottom of the bore being closed by a wall 117 pierced with a central hole 118, said wall defining a second bore 119 open towards the outside of the lookout and which can be closed by a screwed flange 120.
  • the journalling axis 112 has a cylindrical bearing 112a terminated by a shoulder 112b and, opposite the shoulder 112b, a threaded part 112C.
  • the pin 111 proper In abutment against the shoulder 112b is mounted the pin 111 proper, the latter comprising a cylindrical surface 111a against which abuts the internal ring of a roller bearing 121 mounted tight on the axis 112a.
  • the outer ring of the bearing 121 is slidably mounted inside a self-lubricating ring 122 disposed inside the bore 116.
  • a spacer 123 comes to bear against the lateral face of the outer ring of the bearing 121 opposite the bearing 111a of the journal relative to the bearing 121.
  • the threaded part 112c of the axis 112 crosses the wall 117 through the hole 118 thereof and supports a nut 125 housed in the housing 119.
  • the end of the thread 112c carries a circlip 126 which prevents the nut from being removed 125 out of thread 112c.
  • the pin 111 When mounting the plate 14 on the mount and in order to facilitate the introduction of the plate between the crosspieces 13a and 13b, the pin 111 must be released to more easily maneuver the plate.
  • the nut 125 is tightened on the thread 112c, the nut coming to bear on the external face of the wall 117, thus causing the axis 112 and the pin 111, the external ring, to the right of the figure. of the bearing 121 sliding axially in the self-lubricating ring 122 of the housing 114, against the spring formed by the elastic washers 124. (In a variant, the latter could be replaced by a spiral spring).
  • the plate 14 is positioned between the crosspieces 13a, 13b then the nut 125 is loosened in order to position the shoulder 112b of the axis 112 inside a bore 14a of the plate 14, thus giving the rotation reference of the plate on the journal. It is then possible to rotate the pin 111 to coincide the holes in the plate and the threads of the pin which will make it possible to screw the plate 14 by the screws 113 on the pin.
  • the invention also relates to a weapon such as that described here carried by a plate capable of journalling on site on a mount and comprising two pins 111 of the type described, mounted in opposition on either side of the plate, such that '' they can be seen in Figures 3 and 4.
  • the crossbeams 13a, 13b of the chair each support a longitudinal cylinder 20 therefore the body is articulated at the rear of the cross member and includes a spring which actuates a cable 21 wound on a pulley 129, itself secured in rotation in elevation of the plate by means of screws 130 and concentric with pin 111 of said plate.
  • this device makes it possible to catch up on the clearances at the level of the site axis and to improve the accuracy of the system and the dynamic behavior when driving.
  • the elastic mounting of the trunnion axis in its housing has many advantages.
  • the elastic axial sliding mounting of the site pin journal allows the self-alignment of the weapon support on the mount and increases the flexibility of operation.
  • this type of mounting makes it possible to increase the tolerances for producing the supports (lyres and crosspieces) and makes it possible to make up for the variations in center distances due to the variations in temperatures when the mount is used in variable and / or severe climatic conditions.

Abstract

The trunnion assembly according to the present invention has a pivot pin with a longitudinal axis defining the pivot axis of a weapon carrier with respect to a support member. A pair of pivot pins are located on either side of the weapon carrier with their longitudinal axes generally co-axial and are each mounted in the support member by a bearing enabling each of the pivot pins to readily rotate about their longitudinal axes with respect to the support members. The pivot pins, which may be supported in a mounting box attached to each of the support members, are biased in a first direction toward each other by a spring device interposed between the bearing and the mounting box. When in their most extreme biased position, the distance between them is inadequate to accommodate the insertion of the weapon carrier between them. Thus, in order to overcome the biasing force exerted on the pins in the first direction, a nut is attached to a threaded portion of the pivot pin and is prevented from disengagement from the pin via a spring clip of the like. Rotation of the nut causes it to bear against a portion of the mounting box such that further nut rotation axially moves the pin in a second direction, generally opposite to the first direction, thereby overcoming the spring biasing force and moving the pins further apart. Once in these positions, the weapons carrier may be physically inserted between the pivot pins, which then may be moved back in the first direction and be attached to the weapon carrier. Once attached, the nuts on the pivot pins are retracted away from contact with the mounting box to enable the weapons carrier to move laterally with respect to the support turret against the spring biasing forces.

Description

La présente invention a pour objet un tourillon d'arbre pour le tourillonnement en site d'une platine sur un affût d'armement.The present invention relates to a shaft journal for the elevation of a plate on site on an armament mount.

Dans ce domaine il est classique de monter, tournante en site, une arme sur un affût. Lorsque l'arme est montée à demeure sur l'affût, la réalisation du tourillon ne pose pas de problème particulier.In this area, it is classic to mount, rotating in site, a weapon on a mount. When the weapon is permanently mounted on the mount, the realization of the journal poses no particular problem.

Lorsque l'arme est montée sur l'affût de façon amovible, il est nécessaire de réaliser un tourillon qui permette la mise en place et la dépose de l'arme. Un tel dispositif a déjà été proposé par le US-A 2.564.568 qui a été pris à base du préambule de la revendication 1. Ce dispositif consiste à utiliser, entre l'arme et le tourillon une pièce intermédiaire constituée de deux coquilles articulées entre elles. Ce dispositif est relativement lourd et encombrant et il est apparu souhaitable de réaliser un tourillon dont la structure permet d'abord la mise en place de la platine sur l'affût, position dans laquelle le tourillon et son axe doivent être dégagés hors de l'espace de mise en place de la platine, et ensuite le maintien rotulant de la platine sur l'affût, position dans laquelle le tourillon est solidarisé à la platine tandis que l'axe du tourillon est engagé dans la platine elle-même.When the weapon is removably mounted on the carriage, it is necessary to make a journal which allows the positioning and the removal of the weapon. Such a device has already been proposed by US-A 2,564,568 which was taken from the preamble of claim 1. This device consists in using, between the weapon and the journal an intermediate piece made up of two shells articulated between they. This device is relatively heavy and bulky and it appeared desirable to produce a trunnion whose structure allows first of all the positioning of the plate on the carriage, position in which the trunnion and its axis must be released outside the space for positioning the plate, and then the swiveling support of the plate on the mount, position in which the pin is secured to the plate while the axis of the pin is engaged in the plate itself.

L'invention a pour but de réaliser une telle structure.The invention aims to achieve such a structure.

L'invention a également pour but de réaliser une structure de tourillonnement qui permette l'auto-alignement du support d'arme sur l'affût ainsi que le rattrapage des variations d'entraxe de l'affût, dûes aux variations sévères de température que peut subir un tel système dans son utilisation opérationnelle.The invention also aims to provide a journaling structure which allows the self-alignment of the weapon support on the carriage as well as the catching up of variations in center distance of the carriage, due to the severe temperature variations that may undergo such a system in its operational use.

L'invention a donc pour objet un tourillon d'arbre pour le tourillonnement en site d'une platine sur un affût d'armement, ledit tourillon étant porté par un axe de site monté serré dans la bague interne d'un roulement disposé à l'intérieur de l'alésage d'un boîtier solidaire de l'affût, caractérisé en ce que la bague externe du roulement est montée coulissante à l'intérieur du boîtier, en ce qu'un moyen élastique est interposé entre le roulement et le fond de l'alésage du boîtier, et en ce que le tourillon est équipé d'un moyen mécanique apte à déplacer longitudinalement l'axe de site à l'encontre du moyen élastique pour dégager l'axe du tourillon partiellement dans l'alésage du boîtier pendant le montage de la platine sur l'affût.The invention therefore relates to a shaft journal for the journaling in elevation of a plate on a cocking carriage, said journal being carried by a site axis mounted tightly in the inner ring of a bearing disposed at the inside the bore of a housing secured to the carriage, characterized in that the outer ring of the bearing is slidably mounted inside the housing, in that an elastic means is interposed between the bearing and the bottom of the housing bore, and in that the trunnion is equipped with a mechanical means capable of longitudinally displacing the site axis against the elastic means to release the axis of the trunnion partially in the bore of the housing during mounting of the plate on the carriage.

Selon une autre caractéristique de l'invention, le moyen mécanique peut être rendu inactif dès lors que la platine est en place sur l'affût et solidarisée au tourillon, pour permettre un coulissement axial de la platine sur l'affût à l'encontre du moyen élastique.According to another characteristic of the invention, the mechanical means can be made inactive as soon as the plate is in place on the mount and secured to the pin, to allow axial sliding of the plate on the mount against the elastic means.

Selon un mode de réalisation de l'invention, le moyen mécanique est constitué par un système vis-écrou formé par la combinaison d'une extrémité filetée de l'axe de site traversant le fond du boîtier et d'un écrou porté par ladite extrémité filetée, ledit écrou étant apte à venir en appui extérieurement contre le fond du boîtier.According to one embodiment of the invention, the mechanical means is constituted by a screw-nut system formed by the combination of a threaded end of the site axis passing through the bottom of the housing and of a nut carried by said end threaded, said nut being able to bear externally against the bottom of the housing.

D'autres caractéristiques de l'invention seront explicitées et un mode de réalisation décrit dans le complément de description donné à titre d'exemple accompagné de planches de dessins parmi lesquelles :

  • la figure 1 est une vue en élévation d'un affût d'armement en position déployée incorporant le tourillon d'arbre selon l'invention ;
  • la figure 2 est une vue similaire de l'affût en position repliée ;
  • la figure 3 est une vue de dessus de l'affût sans sa platine support de l'arme ;
  • la figure 4 est une vue de l'avant de l'affût en position déployée ;
  • la figure 5 montre en coupe de la figure 1 le tourillon d'arbre selon l'invention .
Other characteristics of the invention will be explained and an embodiment described in the additional description given by way of example accompanied by plates of drawings among which:
  • Figure 1 is an elevational view of a cocking carriage in the deployed position incorporating the shaft journal according to the invention;
  • Figure 2 is a similar view of the carriage in the folded position;
  • Figure 3 is a top view of the carriage without its support plate of the weapon;
  • Figure 4 is a front view of the carriage in the deployed position;
  • Figure 5 shows in section of Figure 1 the shaft journal according to the invention.

Comme représenté aux figures 1 à 4, l'affût déployable incorporant le tourillon d'arbre selon l'invention est disposé sur le toit 1 d'un véhicule (lui-même non représenté). L'affût comporte à sa base un plateau circulaire 2 tournant autour d'un axe de gisement ZZ sur une rehausse 3 au moyen d'un roulement horizontal 4. La rehausse comporte une circulaire dentée 5 sur laquelle s'engrène un pignon 7 d'un codeur de gisement 6As shown in Figures 1 to 4, the deployable mount incorporating the shaft pin according to the invention is disposed on the roof 1 of a vehicle (itself not shown). The carriage has at its base a circular plate 2 rotating around a bearing axis ZZ on an extension 3 by means of a horizontal bearing 4. The extension comprises a toothed circular 5 on which a pinion 7 of a field encoder 6

Le plateau 2 comporte une trappe rectangulaire 8 blindée s'ouvrant par basculement vers l'arrière pour servir de passage au servant de l'affût depuis l'intérieur du véhicule. Le plateau 2 comprend quatre boitiers servant de paliers à une chaise déployable, elle-même constituée de deux lyres, l'une avant 9 et l'autre arrière 10. Parmi les quatre boîtiers précités, deux boîtiers avant 11 servant de palier à la lyre avant tandis que deux boitiers arrière 12 servent de paliers à la lyre arrière. Les boîtiers avant 11 et arrière 12 gauches sont symétriques des boîtiers avant et arrière droits par rapport à un axe diamétral du plateau tournant.The plate 2 comprises a rectangular armored hatch 8 opening by tilting backwards to serve as a passage for the servant of the lookout from inside the vehicle. The tray 2 includes four boxes serving as bearings for a deployable chair, itself made up of two lyres, one front 9 and the other rear 10. Among the aforementioned four boxes, two front boxes 11 serving as a bearing for the front lyre while two rear boxes 12 serve as bearings for the rear lyre. The front left 11 and rear 12 boxes are symmetrical with the right front and rear boxes with respect to a diametrical axis of the turntable.

Chaque lyre avant 9 et arrière 10 est constituée d'un tube coudé en forme de U dont la base (respectivement 9a, 10a) est munie de chapes (respectivement 9b, 10b) équipée d'axes d'articulation autour desquels tournent les lyres 9 et 10.Each front 9 and rear 10 lyre consists of a bent U-shaped tube whose base (respectively 9a, 10a) is provided with yokes (respectively 9b, 10b) equipped with articulation axes around which the lyres 9 rotate and 10.

Sur l'extrémité supérieure des parties verticales des lyres avant et arrière, respectivement gauches 9c, 10c et droites 9d, 10d sont montées, articulées sur des rotules des traverses horizontales (respectivement gauche 13a et droite 13b).On the upper end of the vertical parts of the front and rear lyres, respectively left 9c, 10c and right 9d, 10d are mounted, articulated on ball joints of the horizontal crosspieces (respectively left 13a and right 13b).

L'ensemble formé par les lyres 9 et 10 et les traverses 13a et 13b constitue la chaise articulée dont le déploiement est assuré par la forme en deux parallélogrammes déformables constitués par le plateau 2, les montants gauches 9c, 10c des lyres et la traverse 13a (respectivement les montants droits 9d, 10d et la traverse 13b).The assembly formed by the lyres 9 and 10 and the crosspieces 13a and 13b constitutes the articulated chair whose deployment is ensured by the form in two deformable parallelograms constituted by the plate 2, the left uprights 9c, 10c of the lyres and the crosspiece 13a (respectively the uprights 9d, 10d and the cross 13b).

Sur la chaise ainsi formée est montée la platine 14, support de la (ou des) arme(s) 15. La platine 14 est montée tournante en site sur un axe de site YY matérialisé par des tourillons 111 des traverses 13a, 13b, ledit axe de site étant disposé dans le plan vertical contenant l'axe de gisement ZZ.On the chair thus formed is mounted the plate 14, support for the weapon (s) 15. The plate 14 is rotatably mounted in elevation on an elevation axis YY materialized by pins 111 of the crosspieces 13a, 13b, said site axis being arranged in the vertical plane containing the axis of deposit ZZ.

La platine 14 supporte deux armes 15 placées latéralement de part et d'autre du servant. Elle supporte aussi devant le servant un dispositif de visée 17.The plate 14 supports two weapons 15 placed laterally on either side of the servant. It also supports a sighting device 17 in front of the servant.

Une description générale d'un affût incorporant le tourillon d'axe de site selon l'invention ayant ainsi été faite à titre d'exemple, on se référera maintenant à la figure 5 pour la description du dispositif selon l'invention proprement dit, assurant la rotation en site de la platine 14.
Pour assurer cette rotation en site deux tourillons 111 portés par des axes 112, sont vissés par des vis 113 sur la platine 14.A general description of a mount incorporating the pin of site axis according to the invention having thus been made by way of example, reference will now be made to FIG. 5 for the description of the device according to the invention itself, ensuring the rotation in elevation of the plate 14.
To ensure this site rotation, two pins 111 carried by axes 112 are screwed by screws 113 on the plate 14.

C'est la structure de ces axes 112 et leur montage dans des boîtiers114 situés dans les traverses 13a et 13b qui font l'objet de l'invention.It is the structure of these axes 112 and their mounting in housings 114 located in the crosspieces 13a and 13b which are the subject of the invention.

Le boîtier 114, de forme générale tubulaire cylindrique est soudé dans la traverse 13a (ou 13b).The housing 114, of generally cylindrical tubular shape is welded into the crosspiece 13a (or 13b).

Le boîtier comporte un premier alésage 116 ouvert vers l'intérieur de l'affût, le fond de l'alésage étant fermé par une paroi 117 percée d'un trou central 118, ladite paroi délimitant un second alésage 119 ouvert vers l'extérieur de l'affût et qui peut-être fermé par un flasque vissé 120.The housing includes a first bore 116 open towards the inside of the carriage, the bottom of the bore being closed by a wall 117 pierced with a central hole 118, said wall defining a second bore 119 open towards the outside of the lookout and which can be closed by a screwed flange 120.

L'axe de tourillonnement 112 comporte une portée cylindrique 112a terminée par un épaulement 112b et , opposée à l'épaulement 112b, une partie filetée 112C.The journalling axis 112 has a cylindrical bearing 112a terminated by a shoulder 112b and, opposite the shoulder 112b, a threaded part 112C.

En appui contre l'épaulement 112b est monté le tourillon 111 proprement dit, ce dernier comportant une portée cylindrique 111a contre laquelle vient s'appuyer la bague interne d'un roulement à rouleaux 121 montée serrée sur l'axe 112a. La bague externe du roulement 121 est montée coulissante à l'intérieur d'une bague autolubrifiante 122 disposée à l'intérieur de l'alésage 116.In abutment against the shoulder 112b is mounted the pin 111 proper, the latter comprising a cylindrical surface 111a against which abuts the internal ring of a roller bearing 121 mounted tight on the axis 112a. The outer ring of the bearing 121 is slidably mounted inside a self-lubricating ring 122 disposed inside the bore 116.

Une entretoise 123 vient en appui contre la face latérale de la bague externe du roulement 121 à l'opposé de la portée 111a du tourillon par rapport au roulement 121.A spacer 123 comes to bear against the lateral face of the outer ring of the bearing 121 opposite the bearing 111a of the journal relative to the bearing 121.

Entre l'entretoise 123 et la paroi 117 séparant les logements 116 et 119, sont disposées des rondelles élastiques 124 montées en opposition.Between the spacer 123 and the wall 117 separating the housings 116 and 119, are arranged elastic washers 124 mounted in opposition.

La partie filetée 112c de l'axe 112 traverse la paroi 117 par le trou 118 de celle-ci et supporte un écrou 125 logé dans le logement 119. L'extrémité du filetage 112c porte un circlip 126 qui empêche le retrait de l'écrou 125 hors du filetage 112c.The threaded part 112c of the axis 112 crosses the wall 117 through the hole 118 thereof and supports a nut 125 housed in the housing 119. The end of the thread 112c carries a circlip 126 which prevents the nut from being removed 125 out of thread 112c.

Lors du montage de la platine 14 sur l'affût et afin de faciliter l'introduction de la platine entre les traverses 13a et 13b, on doit dégager le tourillon 111 pour manoeuvrer plus facilement la platine.When mounting the plate 14 on the mount and in order to facilitate the introduction of the plate between the crosspieces 13a and 13b, the pin 111 must be released to more easily maneuver the plate.

Pour ce faire, on serre l'écrou 125 sur le filetage 112c, l'écrou venant en appui sur la face externe de la paroi 117, entrainant ainsi vers la droite de la figure l'axe 112 et le tourillon 111, la bague externe du roulement 121 coulissant axialement dans la bague autolubrifiée 122 du boitier 114, à l'encontre du ressort formé par les rondelles élastiques 124. (Dans une variante ces dernières pourraient être remplacées par un ressort à spirales).To do this, the nut 125 is tightened on the thread 112c, the nut coming to bear on the external face of the wall 117, thus causing the axis 112 and the pin 111, the external ring, to the right of the figure. of the bearing 121 sliding axially in the self-lubricating ring 122 of the housing 114, against the spring formed by the elastic washers 124. (In a variant, the latter could be replaced by a spiral spring).

On met en position la platine 14 entre les traverses 13a,13b puis on desserre l'écrou 125 afin de mettre en position l'épaulement 112b de l'axe 112 à l'intérieur d'un alésage 14a de la platine 14, donnant ainsi la référence de rotation de la platine sur le tourillon. On peut ensuite faire tourner le tourillon 111 pour mettre en coincidence les trous de la platine et les filetages du tourillon qui permettront de visser la platine 14 par les vis 113 sur le tourillon.The plate 14 is positioned between the crosspieces 13a, 13b then the nut 125 is loosened in order to position the shoulder 112b of the axis 112 inside a bore 14a of the plate 14, thus giving the rotation reference of the plate on the journal. It is then possible to rotate the pin 111 to coincide the holes in the plate and the threads of the pin which will make it possible to screw the plate 14 by the screws 113 on the pin.

Ces deux éléments étant solidarisés on peut ensuite dévisser l'écrou 125 jusqu'à ce qu'il n'exerce plus aucune force sur la paroi 117, l'écrou restant maintenu par le circlip 126.
On peut ensuite fermer le flasque 120.These two elements being secured, it is then possible to unscrew the nut 125 until it no longer exerts any force on the wall 117, the nut remaining held by the circlip 126.
The flange 120 can then be closed.

L'invention a également pour objet une arme telle que celle décrite ici portée par une platine apte à tourillonner en site sur un affût et comportant deux tourillons 111 du type décrit, montés en opposition de part et d'autre de la platine, tels qu'on peut les voir aux figures 3 et 4.The invention also relates to a weapon such as that described here carried by a plate capable of journalling on site on a mount and comprising two pins 111 of the type described, mounted in opposition on either side of the plate, such that '' they can be seen in Figures 3 and 4.

En raison du balourd causé par la position avancée du centre de gravité de la platine équipée par rapport à l'axe de site (Y-Y) et pour aider à l'orientation en site de la platine par le servant, les traverses 13a, 13b de la chaise supportent chacune un vérin 20 longitudinal donc le corps est articulé à l'arrière de la traverse et comprend un ressort qui actionne un câble 21 enroulé sur une poulie 129, elle même solidarisée en rotation en site de la platine au moyen de vis 130 et concentrique au tourillon 111 de ladite platine.Due to the imbalance caused by the advanced position of the center of gravity of the equipped stage relative to the elevation axis (YY) and to help the elevation orientation of the stage by the servant, the crossbeams 13a, 13b of the chair each support a longitudinal cylinder 20 therefore the body is articulated at the rear of the cross member and includes a spring which actuates a cable 21 wound on a pulley 129, itself secured in rotation in elevation of the plate by means of screws 130 and concentric with pin 111 of said plate.

Ainsi aidé par la traction exercée par les vérins 20, le servant de l'arme a un effort plus faible à fournir pour positionner en site son arme. D'autre part ce dispositif permet de rattrapper les jeux au niveau de l'axe de site et d'améliorer la précision du système et le comportement dynamique au roulage.Thus aided by the traction exerted by the jacks 20, the servant of the weapon has a lower effort to provide to position the weapon in site. On the other hand, this device makes it possible to catch up on the clearances at the level of the site axis and to improve the accuracy of the system and the dynamic behavior when driving.

Le montage élastique de l'axe de tourillon dans son boîtier présente de nombreux avantages.The elastic mounting of the trunnion axis in its housing has many advantages.

Tout d'abord le fait de pouvoir dégager l'axe de tourillonnement dans son boîtier facilite la mise en place de la platine sur l'affût, ce qui est important par exemple pour l'utilisation d'affûts transportables démontables, ou tout simplement pour les opérations de maintenance de l'arme et/ou de la platine qui la supporte.First of all, being able to disengage the swiveling axis in its housing facilitates the positioning of the plate on the carriage, which is important for example for the use of removable transportable carriage, or simply for maintenance operations on the weapon and / or the plate which supports it.

Le montage à coulissement axial élastique du tourillon d'axe de site permet l'auto-alignement du support d'arme sur l'affût et augmente la souplesse de fonctionnement.The elastic axial sliding mounting of the site pin journal allows the self-alignment of the weapon support on the mount and increases the flexibility of operation.

Il permet d'autre part une amélioration du comportement au roulage de l'ensemble lorsque l'affût est porté par un véhicule en fournissant une suspension élastique à la platine, ce qui évite la transmission des cahots au support d'arme lorsque le véhicule roule.It also allows an improvement in the rolling behavior of the assembly when the mount is carried by a vehicle by providing an elastic suspension to the plate, which prevents the transmission of bumps to the weapon support when the vehicle is moving. .

Enfin ce type de montage permet d'augmenter les tolérances de réalisation des supports (lyres et traverses) et permet de rattraper les variations d'entraxes dûes aux variations de températures lorsque l'affût est utilisé dans des conditions climatiques variables et/ou sévère.Finally, this type of mounting makes it possible to increase the tolerances for producing the supports (lyres and crosspieces) and makes it possible to make up for the variations in center distances due to the variations in temperatures when the mount is used in variable and / or severe climatic conditions.

L'invention a été explicitée dans le cas d'une arme portée par une platine tourillonnant en site sur un affût mais on comprendra aisément que l'invention ne se limite pas à ce cas précis d'utilisation et qu'elle peut être appliquée à tout type d'affût ainsi qu'à une arme montée directement tournant en site sur l'affût, l'axe de site étant alors porté par l'arme elle-même et non par une platine intermédiaire.The invention has been explained in the case of a weapon carried by a turntable swiveling on a mount but it will be readily understood that the invention is not limited to this. specific use case and that it can be applied to any type of mount as well as to a mounted weapon directly turning in elevation on the mount, the elevation axis then being carried by the weapon itself and not by an intermediate plate.

Claims (9)

  1. Shaft journal for the pivoting, in elevation, of a support plate (14) on a weapon mount, the said journal (111) being carried by an elevation spindle (112) mounted clamped in the inner race of a rolling-contact bearing (121) located inside the bore of a casing (114) secured to the mount, characterized in that the outer race of the rolling-contact bearing (121) is mounted so that it can slide inside the casing (114), in that an elastic means (124) is interposed between the rolling-contact bearing and the bottom (117) of the bore (116) of the casing, and in that the journal is equipped with a mechanical means (112c, 125) capable of longitudinally moving the elevation spindle (112) counter to the elastic means (124) in order to free the spindle from the journal partially in the bore of the casing (114) while the support plate (14) is being mounted on the mount.
  2. Shaft journal according to Claim 1, characterized in that the mechanical means (112c, 125) may be rendered inactive as soon as the support plate (14) is in place on the mount and secured to the journal (111) so as to allow an axial sliding of the support plate (14) on the mount, counter to the elastic means (124).
  3. Shaft journal according to either one of Claims 1 or 2, characterized in that the elastic means (124) is a spring located between a spacer (123) for mounting the rolling-contact bearing (121) and the bottom (117) of the casing.
  4. Shaft journal according to Claim 3, characterized in that the elastic means (124) consists of a stack of elastic washers mounted back to back.
  5. Shaft journal according to any one of Claims 1 to 4, characterized in that the mechanical means consists of a screw-nut system formed by the combination of a threaded end (112c) of the elevation spindle passing through the bottom (117) of the casing and of a nut (125) carried by the said threaded end, the said nut being capable of coming to bear externally against the bottom (117) of the casing.
  6. Shaft journal according to Claim 5, characterized in that the threaded end (112c) of the spindle includes a circlip (126) capable of preventing the nut (125) from being withdrawn when it is not bearing against the bottom (117) of the casing.
  7. Shaft journal according to Claim 6, characterized in that the threaded end (112c) of the spindle carrying the nut is located in a sealed housing (119) closed by an end plate (120) screwed on to the casing (114).
  8. Weapon carried by a support plate capable of pivoting in elevation on a mount, characterized in that the support plate (14) is carried by two journals (111) according to any one of Claims 1 to 7, the said journals being mounted opposite one another on either side of the support plate (14).
  9. Weapon according to Claim 8, characterized in that the rotation, in elevation, of the support plate (14) is assisted by a mechanical spring jack (20), the body of the jack being carried by the mount whereas the spring is secured to a cable (21) the end of which is fixed on to a pulley (129) carried by the journal (111).
EP90402267A 1989-08-10 1990-08-08 Trunnion for the elevation axle of a gun cradle Expired - Lifetime EP0412908B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402267T ATE101261T1 (en) 1989-08-10 1990-08-08 SHIELD PIN BEARING FOR A GUN MOUNT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910764A FR2650883B1 (en) 1989-08-10 1989-08-10 SITE AXLE BEARING FOR ARMING MOUNT
FR8910764 1989-08-10

Publications (2)

Publication Number Publication Date
EP0412908A1 EP0412908A1 (en) 1991-02-13
EP0412908B1 true EP0412908B1 (en) 1994-02-02

Family

ID=9384638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402267A Expired - Lifetime EP0412908B1 (en) 1989-08-10 1990-08-08 Trunnion for the elevation axle of a gun cradle

Country Status (8)

Country Link
US (1) US5062347A (en)
EP (1) EP0412908B1 (en)
AT (1) ATE101261T1 (en)
CA (1) CA2021945A1 (en)
DE (1) DE69006427T2 (en)
DK (1) DK0412908T5 (en)
ES (1) ES2049000T3 (en)
FR (1) FR2650883B1 (en)

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US5549397A (en) * 1994-02-03 1996-08-27 Temper Corporation Adapter sleeve and an adjustable spacer with radial extension useable thereon
US5719454A (en) * 1996-05-06 1998-02-17 Carrier Corporation Spring life improvement
US6199469B1 (en) * 1996-11-12 2001-03-13 The United States Of America As Represented By The Secretary Of The Army Counterbalance weight device
USD424650S (en) * 1998-12-04 2000-05-09 Stress-Tek, Inc. Trunnion load cell
US6453792B1 (en) * 1999-10-29 2002-09-24 Raytheon Company Gun trunnion angular-sensing mechanism
WO2004063657A1 (en) * 2003-01-13 2004-07-29 Denel (Pty) Ltd Trunnion assembly
US7444747B2 (en) * 2004-10-14 2008-11-04 Vermeer Manufacturing Company Roller mount arrangement
PL2354749T3 (en) * 2010-02-08 2015-05-29 Oto Melara Spa Vehicle provided with revolving turret
DE102010061488B9 (en) * 2010-12-22 2013-02-28 Krauss-Maffei Wegmann Gmbh & Co. Kg Position transmitter of a rotating weapon and assembly aid, adjustment aid and method for mounting such a position transmitter
SE1651465A1 (en) * 2016-05-17 2017-11-18 Saab Ab Firing direction limitation device
US10942001B1 (en) * 2020-04-01 2021-03-09 United States Of America, As Represented By The Secretary Of The Navy Stow pin actuator

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US1742436A (en) * 1928-06-28 1930-01-07 Dabrasky August Trunnion bearing for ordnance
US2564568A (en) * 1943-11-10 1951-08-14 Republic Aviat Corp Gun trunnion
US2712271A (en) * 1949-05-07 1955-07-05 Richard E Wabnitz Adjustable support apparatus
DE917431C (en) * 1952-07-26 1954-09-02 Rud Schluckebier & Co Wheel set for railway inspection draisines
US2836473A (en) * 1957-07-26 1958-05-27 Clarence W Tydeman Mounting for preloading tapered roller bearings
GB1316433A (en) * 1969-06-30 1973-05-09 Timken Co Rolling bearings
US3746412A (en) * 1971-07-06 1973-07-17 Gen Motors Corp Self adjusting nut assembly for wheel retainment
AT323530B (en) * 1972-07-06 1975-07-10 Voest Ag BEARING ARRANGEMENT FOR LARGE DIAMETER ROTATING DRUMS, SUCH AS TUBE MILLS, MIXING DRUMS, ETC.
DK585D0 (en) * 1985-01-02 1985-01-02 Sabroe & Co As ACTIONALLY ADJUSTABLE RENTAL INSTALLATION IN A ROTOR MACHINE LIKE A SCREW COMPRESSOR
JPH0351546Y2 (en) * 1986-01-07 1991-11-06

Also Published As

Publication number Publication date
ATE101261T1 (en) 1994-02-15
DE69006427D1 (en) 1994-03-17
EP0412908A1 (en) 1991-02-13
FR2650883A1 (en) 1991-02-15
CA2021945A1 (en) 1991-02-01
US5062347A (en) 1991-11-05
FR2650883B1 (en) 1991-10-11
DK0412908T5 (en) 1994-08-22
ES2049000T3 (en) 1994-04-01
DE69006427T2 (en) 1994-06-01

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