EP0706022A1 - Vorrichtung zum Zuführen von Geschossmunition für eine klein- oder grosskalibrige Feuerwaffe an einem Turm eines Panzerfahrzeugs - Google Patents

Vorrichtung zum Zuführen von Geschossmunition für eine klein- oder grosskalibrige Feuerwaffe an einem Turm eines Panzerfahrzeugs Download PDF

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Publication number
EP0706022A1
EP0706022A1 EP95402082A EP95402082A EP0706022A1 EP 0706022 A1 EP0706022 A1 EP 0706022A1 EP 95402082 A EP95402082 A EP 95402082A EP 95402082 A EP95402082 A EP 95402082A EP 0706022 A1 EP0706022 A1 EP 0706022A1
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EP
European Patent Office
Prior art keywords
ammunition
weapon
pinion
shaft
star wheel
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.)
Withdrawn
Application number
EP95402082A
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English (en)
French (fr)
Inventor
Christian Gyre
Daniel Vieillefond
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CTA International SAS
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CTA International SAS
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Filing date
Publication date
Application filed by CTA International SAS filed Critical CTA International SAS
Publication of EP0706022A1 publication Critical patent/EP0706022A1/de
Withdrawn legal-status Critical Current

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    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/54—Cartridge guides, stops or positioners, e.g. for cartridge extraction
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/37—Feeding two or more kinds of ammunition to the same gun; Feeding from two sides

Definitions

  • the present invention relates to an ammunition supply system for a small or medium caliber firearm integrated in a turret mask of an armored vehicle for example, said mask being journalled on an axis to allow the weapon to debate on site, this supply system being of the type comprising at least one ammunition storage device, a weapon-specific introduction device for loading the ammunition one by one into a firing chamber, and an intermediate zone for transferring ammunition between the storage device and the device for introducing the weapon.
  • the ammunition is generally linked together on a chain which is stored in a container which forms an ammunition store.
  • the intermediate zone between the magazine and the device for introducing the weapon is constituted by unidirectional drive means which mesh the chain to bring the ammunition to the device for introducing the weapon for loading. .
  • a firearm can fire different munitions which are chosen according to the nature of the objective to be achieved.
  • an objective which appears in the field of sight of the weapon is not always identifiable in advance, knowing that the effectiveness of the shooting is conditioned by an appropriate choice of the ammunition to fire on this objective.
  • one solution is to provide two stores containing different ammunition. These two magazines are generally placed on either side of the weapon and are respectively associated with two intermediate zones to transfer the ammunition from one or other of the two magazines up to the device for introducing the weapon.
  • each store is constituted by a conveyor with two endless chains which are wound respectively on two upper pinions carried by a shaft and on two lower pinions carried by a shaft, these two trees being parallel to the shaft of the turret mask.
  • the first part of the intermediate transfer zone is arranged in an upper part of the container located above the entry-exit opening common to the two stores, and comprises a first star wheel, a conveyor with two endless chains and a second star wheel interposed between the first wheel and the conveyor, for automatically routing the ammunition between one or the other of the stores and the entry-exit opening of the container.
  • the first star wheel is supported by a shaft parallel to the swivel shaft of the turret mask and is located in the vicinity of the entry-exit opening of the stores, either for receiving ammunition conveyed by the means of bidirectional movement of the selected magazine, either to bring ammunition back to their original store, while the second star wheel is supported by a shaft parallel to the shaft of the first star wheel, and is intended to ensure the transfer of ammunition between the first star wheel and the conveyor with two endless chains, and the two star wheels are driven in synchronism according to two different directions of rotation by means of a gear formed by two pinions respectively integral with the two support shafts of the two star wheels.
  • the articulated arm consists of a hollow body open at its two ends and inside which is housed the second part of the intermediate transfer zone.
  • the second part of the intermediate transfer zone is integrated into the articulated arm and consists of a conveyor with two endless chains, one end of which is located in the vicinity of the entry-exit opening of the container and the other end of which is situated in the vicinity of the entry of the device for introducing the weapon, the two endless chains winding respectively on the side of the first part of the intermediate transfer zone on two pinions carried by a first shaft, and on the side of the weapon insertion device on two pinions carried by a second shaft.
  • the conveyors of the two parts of the intermediate transfer zone are driven in synchronism by means of a gear made up of two coupling pinions.
  • the means for selecting one or the other of the magazines comprise two drive pinions respectively associated with the two conveyors of the two magazines, and a coupling device for coupling in rotation the first star wheel and the pinion associated with the selected magazine.
  • the first part of the intermediate transfer zone housed in the container remains fixed, while its second part housed in the arm debates in site with the weapon. This results in a relative movement between the two parts of the intermediate transfer zone, which affects the part of the kinematic chain located in the container. Under these conditions, the drive pinion of the conveyor of the unselected magazine, which is detached from the kinematic chain, risks no longer being in synchronism with the kinematic chain when this magazine is selected again.
  • the means for maintaining the synchronization, during a deflection on site of the weapon, between the means of transfer of the store not selected and the means of transfer of the first part of the intermediate zone when this store is again selected include two movable rectilinear racks housed in the container and respectively associated with the two drive pinions of the two magazines, each rack coming into engagement with a coupling pinion coaxial with the journal shaft of the weapon and fixed to a fixed lever of the arm, and with the drive pinion of the magazine not selected, while the drive pinion of the selected magazine is engaged with the pinion coupling in rotation with the first star wheel, the two racks being moved in two opposite directions when the shaft is debating in elevation.
  • a conveyor shaft integrated into the articulated arm is, for example, the drive shaft of the kinematic chain of the supply system, this shaft being able to be driven either by the shaft motor, or by an auxiliary motor.
  • the kinematic chain can operate in two directions depending on whether the drive shaft rotates in one direction of rotation or the other.
  • the weapon operates in the feeding phase when the ammunition is routed between one of the stores and the device for introducing this ammunition into the weapon, and operates in the de-feeding phase before being able to select the other store. .
  • the supply system therefore comprises a device for counting ammunition exiting through the entry-exit opening of the stores.
  • the counting device comprises a detection element for counting bosses placed radially on one face of the coupling pinion integral in rotation with the first star wheel, the detection element being carried by a shaped plate disc, the periphery of which has a toothing, this plate being rotatably supported by the shaft of the first star wheel, while the toothing of the plate is intended to engage with the drive pinion of the magazine not selected.
  • the supply system is compact and can be mounted on several types of weapons, in particular those integrated in a turret mask of an armored vehicle.
  • the supply system 1 illustrated in FIG. 1 is in particular designed for a small or medium caliber firearm integrated in a turret mask of an armored vehicle for example.
  • the turret mask which supports the weapon is journalled on a horizontal axis materialized by a shaft 100 supported by a turret cradle to allow the weapon to debate on site, and the cradle is itself rotatably mounted around a vertical axis to allow the weapon to debate in deposit.
  • the supply system 1 comprises in particular a storage device 3 for ammunition, an insertion device 5 specific to the weapon for loading the ammunition one by one into a firing chamber, and an intermediate zone ZT1 and ZT2 for automatically transferring the ammunition between the storage device 3 and the introduction device 5 of the weapon.
  • the storage device 3 comprises a container 10 having the overall shape of a rectangular parallelepiped. Two stores G1 and G2 containing different munitions M1 and M2 are arranged inside the container 10.
  • the two stores G1 and G2 are arranged on either side of a central vertical partition 12 which longitudinally divides the interior volume of the container 10 into two parts.
  • the container 10 extends over a length which is greater than the length of the munitions M1 and M2.
  • the two corridors 15 and 17 of the store G1 have a width which is slightly greater than the diameter of the ammunition which they must store. At their lower ends, the two corridors 15 and 17 communicate with each other by a semi-circular part 20 formed in the bottom wall of the container 10. At their upper ends, the two corridors 15 and 17 open into the interior of the container 10 by the same inlet-outlet opening 22. This opening 22 extends over a length and a width greater than that of the munitions M1 and M2 to allow the ammunition to pass freely.
  • the layout of the store G2 is identical to that of the store G1, and the two external corridors 15 and internal 17 of the store G2 also open, at their upper ends, inside the container 10 through the entry-exit opening. 22.
  • the munitions M1 and M2 are intended to be stored horizontally and on top of each other in the corridors 15 and 17 of the two stores G1 and G2, these munitions not being linked together.
  • Each store G1 and G2 is equipped with a bi-directional displacement means for supporting and moving the ammunition M1 and M2 inside the store.
  • the munitions M1 and M2 are loaded into the stores G1 and G2 by hatches T1 and T2 provided on the longitudinal walls 10a of the container 10.
  • This means of bidirectional movement is for example constituted by a conveyor 25 with two endless chains 27.
  • the two chains 27 of each conveyor 25 extend parallel to each other and are each wound on two respectively upper sprockets 29 and lower 31.
  • the sprockets 29 and 31 share each chain in two strands and are arranged so that one strand of the chain 25 can travel freely in the external corridor 15 of the associated magazine G1 or G2, while the other strand of this chain 27 can move freely in the internal corridor 17 of the associated store G1 or G2.
  • the two upper sprockets 29 of the two chains 27 are supported and integral in rotation with the same shaft 29a, while the two lower sprockets 31 are supported and integral with the same shaft 31a, so that the two chains 27 of each conveyor 25 are driven in synchronism.
  • the ends of the shafts 29a and 31a of each conveyor 25 are housed in bearings supported by the side walls of the container 10, for example.
  • each conveyor 25 The two endless chains 27 of each conveyor 25 are equipped with radial stops 35 which are intended to support the munitions M1 or M2, the distance separating two consecutive stops 35 being slightly greater than the diameter of the munitions M1 and M2.
  • the representation of the device for introducing the weapon 5 has been purposely schematized, given that it is specific to the type of weapon considered, and that the device 3 for storing ammunition and the intermediate transfer zone ZT1 and ZT2 ammunition forms an assembly which can cooperate with different types of introduction devices to load the ammunition into the firing chamber of the weapon.
  • the intermediate ammunition transfer zone generally comprises two parts ZT1 and ZT2 which are respectively integrated into the container 10 and into an articulated arm 102.
  • One end of the arm 102 is mounted articulated on the journal shaft 100 of the weapon to follow the deflections in site of the weapon, and its other end cooperates with the entry of the device 5 for introducing ammunition into the firing chamber of the weapon.
  • the second part ZT2 of the intermediate ammunition transfer zone which is integrated into the arm 102, debates on site with the weapon, while the first part ZT1 of this intermediate transfer zone, which is integrated into the container 10, remains fixed when the weapon debates on site.
  • the first part ZT1 of the intermediate zone is arranged in an upper part of the container 10 which is located above the two stores G1 and G2, and comprises transfer means with bidirectional displacement for automatically transporting the munitions M1 or M2 of the one or the other of the two stores between the entry-exit opening 22 common to these two stores and an entry-exit 104 provided at the top of the container 10.
  • These transfer means with bidirectional movement consist of a first star wheel 37, a conveyor 105 with two endless chains 107 and a second star wheel 110 interposed between the first wheel 37 and the conveyor 105.
  • the star wheel 37 (FIG. 2) comprises two stars 39 with four branches 40, which are supported and integral in rotation with a carrying shaft 41.
  • the two stars 39 are separated from each other by a distance less than the length of the munitions M1 and M2 so as to partially receive the latter.
  • the star wheel 37 is mounted at the entry-exit opening 22 of stores G1 and G2 to automatically receive the ammunition M1 or M2 transported by the conveyor 25 of the selected store.
  • the shaft 41 which carries the star wheel 37 is rotatably supported by the container 10 and extends parallel to the shafts 29a and 31a of the two conveyors 25 of the stores G1 and G2.
  • Each longitudinal side of the inlet-outlet opening 22 of the container 10 is partly bordered by a casing 43 in the form of an arc of a circle for retaining and guiding the ammunition M1 or M2 during their transfer between the conveyor 25 of the selected store and the star wheel 37.
  • the two endless chains 107 of the conveyor 105 extend parallel to each other and are each wound on two gears respectively upper 112 and lower 114.
  • the two upper gears 112 are supported in rotation by the journal shaft 100 of the turret mask, while the two lower pinions 114 are supported and integral with the same shaft 114a, so that the two chains 107 are driven in synchronism.
  • the ends of the shaft 114a of the conveyor 105 are housed in bearings supported by the side walls of the container 10, for example.
  • the two endless chains 107 of the conveyor 105 comprise radial lugs 116 which are intended to support the munitions M1 or M2, the distance separating two successive lugs 116 being slightly greater than the diameter of an ammunition.
  • the conveyor 105 is bordered by the two longitudinal walls 10a of the container 10 so that the ammunition is retained and guided during their transfer.
  • the upper gears 112 of the conveyor 105 are located at the upper part of the container 10 and at the level of the entry-exit opening 104 in order to be able to extract the ammunition from the container 10.
  • the second star wheel 110 (FIG. 2) is carried by the shaft 114a and integral in rotation with the lower pinions 114 of the conveyor 105.
  • This second star wheel 110 also comprises two stars 118 with four branches 119 which are separated from one 'other of a distance less than the length of the munitions M1 and M2.
  • the second star wheel 110 is intended to rotate in the opposite direction to that of the first star wheel 37 to automatically transfer the ammunition between the star wheel 37 and the conveyor 105.
  • the arm 102 is constituted by a hollow body 102a which is open at its two ends and extends between the inlet-outlet opening 104 of the container 10 and the inlet of the introduction device 5 ammunition in the weapon, and the second part ZT2 of the intermediate transfer zone is housed inside this hollow body 102a.
  • This second part ZT2 comprises a transfer means with bidirectional displacement for automatically routing the ammunition M1 and M2 between the entry-exit opening 104 of the container 10 and the entry of the device for introducing the weapon.
  • This transfer means with bidirectional movement consists of a conveyor 120 with two endless chains 122.
  • the two chains 122 extend parallel to each other and are each wound on two sprockets 124 and 126.
  • the two sprockets 124 are supported and integral in rotation with the same shaft 124a, while the two pinions 126 are supported and integral with the same shaft 126a, so that the two chains 122 of the conveyor 120 are driven in synchronism.
  • the trees 124a and 126a are parallel to the journaling shaft 100 of the turret mask.
  • the ends of the shafts 124a and 126a of the conveyor 120 are housed in bearings supported by the side walls of the body 102a of the arm 102.
  • the two endless chains 122 of the conveyor 120 comprise radial stops 128 which are intended to retain the ammunition M1 and M2, the distance separating two successive stops 128 being slightly greater than the diameter of the ammunition, and the conveyor 120 is bordered by two longitudinal walls body 102a so that the ammunition is retained and guided during their transfer.
  • the upper gears 112 of the conveyor 105 and the gears 124 of the conveyor 120 are positioned on either side of the entry-exit opening 104 of the container 10, so that the munitions M1 or M2 can be transferred automatically from one conveyor to another.
  • the transfer of the ammunition M1 and M2 between the conveyor 120 of the articulated arm 102 and the entry of the device 5 for introducing the ammunition into the weapon is effected by means of two star wheels 130 and 132.
  • the star wheel 130 is mounted on the shaft 126a of the conveyor 120, while the star wheel 132 is mounted at a lower level between the star wheel 130 and a zone 135 for placing a munition M1 or M2.
  • These two star wheels 130 and 132 therefore ensure the transfer of ammunition between the conveyor 120 and the stationing area 135 where an M1 or M2 ammunition is aligned along the axis of the loading and firing chamber before being introduced into this room.
  • the two star wheels 130 and 132 rotate in the same direction of rotation by means of gears not shown.
  • a gear formed by two coupling pinions 137 and 139 in engagement with each other ensures a kinematic connection between the two parts ZT1 and ZT2 of the intermediate transfer zone, that is to say to drive in synchronism the conveyor 105 housed in the container 10 and the conveyor 120 housed in the articulated arm 102.
  • the coupling pinion 137 is housed inside the container 10, mounted on the journal shaft 100 of the turret mask and secured in rotation of the upper pinions 112 of the conveyor 105.
  • the coupling pinion 139 is housed in the arm 102, mounted on the shaft 124a of the conveyor 120 and integral in rotation with the pinions 124 of this conveyor 120.
  • a gear formed by two coupling pinions 141 and 143 in engagement with one another ensures a kinematic connection between the two star wheels 37 and 110 of the first part ZT1 of the intermediate transfer zone.
  • the pinion 141 is integral in rotation with the shaft 114a which carries the star wheel 110 and the lower pinions 114 of the conveyor 105, while the pinion 143 is integral in rotation with the shaft 41 which carries the star wheel 37.
  • two coupling pinions 145 and 147 are intended to selectively engage the pinion 143 depending on whether the magazine G1 or G2 is selected, that is to say to synchronously drive the star wheel 37 and the conveyor 25 of the selected store.
  • the pinion 145 is carried by the upper shaft 29a of the conveyor 25 of the store G1 and is integral in rotation with the pinions 29 which support the chains 27 of this conveyor 25.
  • the pinion 147 is carried by the shaft 29a of the conveyor 25 of the store G2 and is integral in rotation with the pinions 29 which support the chains 27 of this conveyor 25.
  • the coupling pinion 145 engages with the pinion 143 integral in rotation with the star wheel 37, while it is the pinion 147 which engages with the pinion 143 when the magazine G2 is selected.
  • a coupling control device 150 is provided for selectively engaging the pinion 143 associated with the star wheel 37 with the pinion 145 associated with the store G1 or the pinion 147 associated with the store G2 so as to select the store G1 or G2.
  • the coupling control device 150 comprises a sleeve 151 which is slidably mounted by means of grooves on each of the two upper shafts 29a of the conveyors 25, so that the two coupling pinions 145 and 147 are in fact respectively supported and integral with the two sleeves 151.
  • the coupling control device 150 also comprises an arm 152 terminated at each end by a fork 153, the two forks 153 respectively engaging in two annular grooves formed at the periphery of the sleeves 151.
  • the arm 152 is articulated on a shaft 154 driven in rotation by a motor assembly M to move the two sleeves 151 in translation in two opposite directions.
  • This kinematic chain can be set in motion from a single drive shaft which, in the example considered here, is the shaft 126a of the conveyor 120 housed in the articulated arm 102.
  • This continuous kinematic chain between the conveyor 25 of the magazine G1 and the insertion device 5 of the weapon makes it possible to automatically transport ammunition M1 stored in the magazine G1 to the loading and firing chamber of the manner described below and assuming the weapon pointed at a determined angle of elevation.
  • the setting in motion of the conveyor 25 of the store G1 moves the ammunition M1 inside the store in the direction of the entry-exit opening 22 common to the two stores G1 and G2.
  • Each munition M1 which leaves for example via the external corridor 15 of the store G1 is transferred between two consecutive branches 40 of each of the two stars 39 of the star wheel 37.
  • the ammunition M1 is then transferred from the star wheel 37 to the star wheel 110 , then conveyed by the conveyor 105 to the entry-exit opening 104 located at the top of the container 10.
  • the ammunition is then taken up by the conveyor 120 of the articulated arm 102 to be conveyed to the device for introduction 5 of the weapon.
  • the munition M1 which arrives towards the end of the conveyor 120, is taken up by the star wheel 130 integral in rotation with the motor shaft 126a.
  • the munition M1 is finally received by the star wheel 132 to be retained during its downward movement towards the zone 135 for placing the munition.
  • the continuous kinematic chain which makes it possible to transfer a succession of munitions M1 stored in the magazine G1 to the system 5 for introducing the weapon can advantageously operate in the opposite direction, that is to say to bring the ammunition M1 from the stationing area 135 to the store G1, this operation being necessary when the shooter decides to fire ammunition M2 stored in the store G2 and while ammunition M1 is located between the opening entrance-exit 22 of the stores and the stationing area 135, as will be explained below.
  • the weapon at rest that is to say that the kinematic chain of the supply system is stationary, and that the shooter controls a movement in elevation of the weapon to point it on a target before firing ammunition from store G1 already selected during a previous shot.
  • the pinion 139 which is located on the side of the arm 102 and in engagement with the pinion 137 located on the container side 10, normally ensures the transmission of movement between the first ZT1 and second ZT2 parts of the intermediate transfer zone.
  • the rotation of the arm 102 causes the rotation of the pinion 137 which is engaged with the pinion 139.
  • This rotational movement is automatically reflected on the part of the kinematic chain located inside the container 10.
  • the munitions M1 located in the first part ZT1 of the intermediate transfer zone and in the selected magazine G1 are all moved in one direction or another depending on the direction of rotation of the arm 102.
  • the branches 40 of this star wheel 37 offset angularly with respect to the first munition M2 of the unselected magazine G2 which will be the first ammunition extracted from this store by the star wheel 37 when the shooter has decided to select it.
  • Such an angular offset can cause a desynchronization between the transfer means of the first part ZT1 of the intermediate transfer zone and the transfer means of the unselected magazine G2.
  • This desynchronization can create a malfunction of the kinematic chain when the pinion 145 associated with the store G2 must come into engagement with the pinion 143 associated with the star wheel 37, the teeth of these pinions not being correctly positioned with respect to each other.
  • the supply system 1 according to the invention is also equipped with means for maintaining this synchronization, as a result of the deflection of the weapon on site.
  • these synchronization means comprise two rectilinear racks 155 and 157 housed in the container 10.
  • one end of the rack 155 is engaged with a pinion 158 which is coaxial with the journal shaft 100 of the shaft and fixed to a lever 159 secured to the arm 102, while the other end of the rack 155 is intended to engage with the pinion 145 associated with the magazine G1, when this magazine is not selected, that is to say when the pinion 145 is not engaged with the pinion 143 associated with the wheel star 37.
  • one end of the rack 157 is engaged with the pinion 158, while its other end is intended to come into engagement with the pinion 147 when the magazine G2 is not selected, ie that is to say when the pinion 147 is not engaged with the pinion 143 associated with the star wheel 37.
  • the rotation of the pinion 158 causes the displacement of the two racks 155 and 157 in two opposite directions while being guided along slides arranged in the container 10.
  • the pinion 147 by which the movement of the conveyor 25 of the magazine G2 takes place and which is separated from the kinematic chain, will nevertheless be rotated as a result of the linear displacement of the rack 155, so that the angular offset which results from a displacement in elevation of the weapon will be fully transmitted to the pinion 147.
  • This rotation of the pinion 147 causes the conveyor 25 of the magazine G2 to move, so that the ammunition M2 is moved inside the magazine in a direction which is a function of the direction of rotation of the articulated arm 102.
  • the weapon is operational and fires ammunition, that is to say that the kinematic chain of the supply system is in motion as a result of the rotation of the motor shaft 126a to convey the ammunition M1 from the store G1 up to the device 5 for introducing the weapon which discharges one by one into the firing chamber, and let us suppose that in parallel the shooter modifies the site of the weapon to follow a mobile objective for example.
  • the two pinions 137 and 139 which provide the kinematic connection between the two parts ZT1 and ZT2 of the intermediate transfer zone rotate in synchronism under the control of the motor shaft 126a.
  • the kinematic chain of the feed system 1 can operate in a direction corresponding to a feed phase of the weapon to convey ammunition M1 or M2, depending on whether the magazine G1 or G2 is selected, up to the device 5 for introducing the weapon, but can also operate in the opposite direction corresponding to a phase of de-supplying to bring ammunition M1 or M2, present in the intermediate transfer zone ZT1 and ZT2, to their magazine d origin and it suffices to reverse the direction of rotation of the motor shaft 126a which sets in motion the kinematic chain of the supply system 1.
  • the phase of disarming the weapon is necessary when the shooter decides to select the other store or store G2 for example, while munitions M1 already extracted from store G1 are still present in the intermediate transfer zone ZT1 and ZT2 between the entry opening - outlet 22 of the magazines and the device 5 for introducing the weapon.
  • the star wheel 132 interposed between the conveyor 120 integrated into the arm 102 no longer has a support function for retaining the ammunition during their downward movement towards the zone station 135, but allows you to take back an ammunition that is in this station 135 area to reassemble it towards the star wheel 130, replace it between two cleats 128 of the conveyor 120 to bring it and the ammunition which precedes it to the store G1.
  • a device is provided for counting the number of ammunition M1 or M2 which are extracted from the selected magazine to know the number of ammunition that will be brought back to their original magazine during the de-feeding phase and before selecting the other magazine.
  • the counting device 160 of the munitions M1 or M2 extracted from their respective stores G1 and G2 comprises a detection element such as a proximity sensor 162 connected to an electronic control unit.
  • the sensor 162 detects and counts bosses 164 placed radially on one face of the pinion 143 integral in rotation with the star wheel 37.
  • the sensor 162 is carried by a disc-shaped plate 165 whose periphery is provided with a toothing 166.
  • the plate 165 is mounted to rotate freely on the shaft 41 of the star wheel 37 and its toothing 166 is intended to come in gear with the pinion 145 if the magazine G2 is selected or with the pinion 147 if the magazine G1 is selected.
  • the angular offset of the star wheel 37 which results from a deflection in elevation of the weapon, is also transmitted to the turntable 165 so that the proximity sensor 162 undergoes the same angular offset as the holes 164 of star wheel 37 to avoid any counting error.
  • the weapon When the shooter decides to change the store, the weapon must first be de-supplied, that is to say bring the ammunition present in the transfer zone ZT1 and ZT2 back to their original store G1 or G2. For this, the movement of the kinematic chain is reversed by rotating the motor shaft 126a in the opposite direction.
  • the supply system can then advantageously be equipped with a safety device 167 which has the function of blocking the pinion 143 secured in rotation of star wheel 37 at the moment when the last ammunition returns to its original store G1 or G2 by leaving star wheel 37, a moment which corresponds to the end of the weapon's de-energizing phase where the motor shaft 126a of the kinematic chain is stopped in rotation.
  • this safety device 167 is constituted by a movable pin 168 and by a control electromagnet 169 which are carried by the plate 165 of the counting device 160.
  • This plate 165 is coaxial with the pinion 143 integral in rotation of the star wheel 37, and the pin 168 is intended to engage in one of several curved grooves 169 machined in the body of the pinion 143, each groove ending in a hole 169a.
  • the pin 168 is controlled by the electromagnet 169 to engage in one of the grooves 169 of the pinion 143 so as to penetrate into the hole 169a of this groove when the last munition leaves the star wheel 37.
  • the pinion 143 is then immobilized in rotation as well as the kinematic chain as a result of the stop in rotation of the motor shaft 126a.
  • the coupling control device 150 is actuated to select the other magazine. Once, the other magazine selected, the electromagnet 169 is again controlled to disengage the pin 168 and unlock the pinion 143. Then, the drive shaft 126a is controlled in rotation to convey the ammunition from the magazine selected to the device d introduction 5 of the weapon.
  • the drive shaft 126a of the kinematic chain of the supply system 1 can be driven by the weapon's engine or by an auxiliary motor.
  • the ammunition storage device 3 can be equipped with a third magazine G3 containing M3 ammunition.
  • the store G3 is arranged inside a container 170 which is integral with the articulated arm 102.
  • Two star wheels 172 and 174 whose axes are parallel to the journal shaft 100 of the turret mask, are mounted in the container 170.
  • the ammunition M3 comes partially to be housed in the respective branches of these two star wheels 172 and 174 which are driven in two opposite directions of rotation.
  • the outlet from the container 170 is formed by a conduit 175 which opens at the level of the conveyor 120 of the articulated arm 102 for conveying the ammunition M3 to the device for introducing the weapon.

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EP95402082A 1994-09-30 1995-09-15 Vorrichtung zum Zuführen von Geschossmunition für eine klein- oder grosskalibrige Feuerwaffe an einem Turm eines Panzerfahrzeugs Withdrawn EP0706022A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9411740A FR2725267B1 (fr) 1994-09-30 1994-09-30 Systeme d'alimentation en munitions pour une arme a feu de petit ou moyen calibre integree dans un masque de tourelle d'un engin blinde par exemple
FR9411740 1994-09-30

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EP0706022A1 true EP0706022A1 (de) 1996-04-10

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EP95402082A Withdrawn EP0706022A1 (de) 1994-09-30 1995-09-15 Vorrichtung zum Zuführen von Geschossmunition für eine klein- oder grosskalibrige Feuerwaffe an einem Turm eines Panzerfahrzeugs

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US (1) US5614689A (de)
EP (1) EP0706022A1 (de)
FR (1) FR2725267B1 (de)

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WO1999036743A1 (en) * 1998-01-14 1999-07-22 General Dynamics Armament Systems, Inc. Transfer mechanism and method for uploading and downloading propellant charges and projectiles

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US6272967B1 (en) * 1999-06-14 2001-08-14 General Dynamics Armament Systems, Inc. Modular ammunition storage and retrieval system
DE102005040406A1 (de) * 2005-08-26 2007-03-01 Rheinmetall Waffe Munition Gmbh Verfahren und Vorrichtung zur zielgerichteten Munitionszuführung
US7806036B2 (en) * 2006-01-03 2010-10-05 Browning Magazine apparatuses, firearms including same, and method of introducing an ammunition cartridge into a firearm
US7913610B2 (en) * 2008-07-18 2011-03-29 Kongsberg Defence & Aerospace Ammunition retainer for linked ammunition
RU2633829C2 (ru) * 2016-03-22 2017-10-18 Открытое акционерное общество "Специальное конструкторское бюро машиностроения" Установка оружия
RU2654280C1 (ru) * 2017-08-07 2018-05-17 Акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" Стопор конвейера
IL258680A (en) * 2018-04-12 2018-05-31 Atias Eliran Ammunition storage and feed system
US10704850B1 (en) 2019-01-08 2020-07-07 Vista Outdoor Operations Llc Electronic magazine loader

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EP0450297A1 (de) * 1990-04-02 1991-10-09 Oerlikon-Contraves AG Vorrichtung zum Zuführen von Patronen
US5109751A (en) * 1990-06-06 1992-05-05 North American Dynamics Parallel path single bay ammunition feed system
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US6073534A (en) * 1998-01-14 2000-06-13 General Dynamics Armament Systems, Inc. Transfer mechanism and method for uploading and downloading propellant charges and projectiles

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US5614689A (en) 1997-03-25
FR2725267B1 (fr) 1996-12-20
FR2725267A1 (fr) 1996-04-05

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