The present invention relates to an installation provided with a linkless ammunition loading system, in particular for artillery installations.
Installations are known in the industry which are provided with linkless ammunition loading systems; in this respect, it would be desirable to make available further installations including loading systems differing from those currently known in the art.
U.S. Pat. No. 1,332,060 A describes an installation comprising a traversing portion configured to be rotatably mounted and supported on a stationary support structure, so as to rotate about a traversing axis. An elevating portion is rotatably supported by the traversing portion about an elevating axis substantially perpendicular to the traversing axis. A firearm assembly is supported by the elevating portion and comprises a barrel configured to fire ammunitions through itself. A magazine is carried by the traversing portion and is configured to contain a plurality of linkless ammunitions to be fed to the barrel. A feeding assembly is configured to transfer the linkless ammunitions from the magazine to the barrel for firing the linkless ammunitions. The feeding assembly is carried by the elevating portion. A transfer device is configured to transfer the linkless ammunitions from the magazine to the feeding assembly.
U.S. Pat. No. 4,492,144 A discloses a slip ring for the transport of linkless ammunition and fired cases between a supply means which is stationary with respect to a support and a gun which is journaled for rotation about an axis with respect to said support, comprising: a first transport means which is stationary with respect to said support and is adapted to be driven by the gun; a second transport means which is journaled for rotation about said axis with said support, and a differential means disposed between said first and second transport means and journaled for rotation about said axis with respect to said first and second transport means, said differential means including a plurality of compartments, each for receiving a respective round or case, said first and second transport means each respectively inserting into, or extracting rounds or cases from, said compartments, said first transport means directly coupled to and driving said differential means which is directly coupled to and drives said second transport means.
U.S. Pat. No. 4,840,108 A discloses an ammunition infeed apparatus for an automatic firing weapon. This ammunition infeed apparatus comprises an ammunition container filled with a plurality of ammunition loading or cartridge clips. The ammunition container rotates with the firing weapon about the azimuth axis. There is also provided a device for the ejection of the full ammunition loading clips from the ammunition container, a device for the extraction or stripping of the cartridges or ammunition from the ammunition loading clips. This extraction or stripping device comprises an endless conveyor band. Also provided is a flexible endless chain for the transport of the ammunition or cartridges stripped from the ammunition loading clips to the firing weapon.
It is one object of the present invention to realize an installation provided with an improved loading system capable of overcoming the drawbacks of the techniques currently available on the market.
According to the present invention, this and other objects are achieved through an installation provided with a loading system.
It is understood that the appended claims are an integral part of the technical teachings provided in the following detailed description of the present invention.
In particular, the installation provided with the loading system offers the following advantages, which are in particular due to some preferred, though not essential, aspects of the present invention:
Further features and advantages of the present invention will become apparent in light of the following detailed description, provided herein merely as a non-limiting example and referring, in particular, to the annexed drawings as summarized below.
a show, respectively, a perspective front top view and a partially transparent perspective rear top view, both of which concern a turret whereon an installation comprising a loading system according to the present invention has been mounted.
For completeness' sake, the following is a list of alphanumerical references and names used herein to identify parts, elements and components illustrated in the above-summarized drawings.
With reference to
Installation 10 is particularly suitable for installation on terrestrial vehicles, e.g. armoured vehicles such as tanks. Nevertheless, it may be used for other applications as well, e.g. aircraft, ships or fixed installations.
With reference to
Traversing mass 12 is configured to be rotatably mounted and supported on a stationary support structure (not numbered), so as to rotate about a substantially vertical traversing (or azimuthal) axis Z.
Elevating mass 14 is rotatably supported by traversing mass 12 about an elevating axis Y, which is substantially horizontal and perpendicular to vertical axis Z. In particular, when viewing
A firearm assembly 16 is in turn supported by elevating mass 14. Moreover, firearm assembly 16 comprises a barrel 18 configured to fire ammunitions A. In the embodiment illustrated herein, barrel 18 is a cannon, e.g. having a calibre of 30 mm.
Installation 10 comprises also a magazine 20 configured to contain a plurality of ammunitions A to be fed to barrel 18. In particular, magazine 20 is configured to automatically move the plurality of ammunitions A. Furthermore, ammunitions A contained in the magazine are of the type not mutually connected by links—also referred to as linkless ammunitions.
Magazine 20 is carried by traversing mass 12 and is operatively integral therewith; in particular, as will be further explained hereinafter, magazine 20 is separate and distinct from elevating mass 14.
In the embodiment illustrated herein, magazine 20 has, at its outlet, a star-element conveyor of a per se known type (not numbered), which dispenses ammunitions A out of itself.
Artillery installation 10 further comprises a feeding assembly 22 configured to transfer ammunitions A coming from magazine 20 to barrel 18, for such ammunitions A to be fired through the latter.
In the embodiment illustrated herein, feeding assembly 22 is carried by elevating mass 14 and is operatively integral therewith; in particular, unlike magazine 20, feeding assembly 22 is separate and distinct from traversing mass 12.
Furthermore, artillery installation 10 comprises a transfer device (or “exchanger”) 24 configured to transfer ammunitions A from magazine 20 to feeding assembly 22.
In particular, transfer device 24 is mounted on traversing mass 12.
The following will describe further technical features of this exemplary embodiment of the present invention.
In the implementation example illustrated herein, transfer device 24 is mounted in proximity to the elevating axis Y.
As will be described in more detail below, also with reference to some preferred and optional technical features of the present invention, due to this arrangement of transfer device 24 the mutual arrangement between transfer device 24, carried by traversing mass 12, and inlet 25 of feeding assembly 22, carried by elevating mass 14, always remains substantially the same for any angle of elevation assumed by elevating mass 14 relative to traversing mass 12 about elevating axis Y; therefore, ammunitions A can be conveyed from magazine 20 to barrel 18 (through feeding assembly 22) in any mutual operating condition of traversing mass 12 and elevating mass 14 of artillery installation 10.
With particular reference to
Feeding assembly 22 comprises a conveying guide 26 mounted on elevating mass 14 and defining a path for transporting ammunitions A from transfer device 24 towards barrel 18. In the illustrated embodiment, the inlet of feeding assembly 22 substantially coincides with the inlet of conveying guide 26, and both are designated by the same reference numeral 25.
In particular, inlet 25 of conveying guide 26, whereat ammunitions A coming from magazine 20 are made to arrive via a star element, e.g. a three-lobed one (not numbered in
With particular reference to
The rigid conduit formed by conveying guide 26 is, for example, implemented as an open channel in which ammunitions A can slide. In particular, such rigid conduit has a substantially rectangular cross-section, suitable for receiving ammunitions A with their side facing forwards and for directing them towards barrel 18. Furthermore, said conveying conduit or channel is rigid.
Transfer device 24 is configured to pick up ammunitions A as they exit magazine 20 and supply them to inlet 25 of conveying guide 26.
In
Transfer device 24 additionally comprises star element 27, in particular a three-lobed one, rotatably supported about a rotation axis W situated in proximity to the elevating axis Y. In the implementation example illustrated herein, star element 27 is aligned with feeding assembly 22.
Multi-lobed star element 27 is configured to rotate and pick up ammunitions A exiting magazine 20 and supply them to inlet 25 of feeding assembly 22, and in particular to the conduit formed by conveying guide 26, for moving them towards barrel 18. As can be seen, ammunitions A are picked up laterally by star element 27 from the outlet of magazine 20, and are then delivered to inlet 25 of conveying guide 26 (in particular, to the inlet of the rigid conduit defined by the latter).
Inlet 25 of conveying guide 26 (e.g. the inlet of the rigid conduit defined by the latter) is located at the elevating axis Y, being in particular crossed transversally by the latter.
Preferably, rotation axis W is substantially parallel to elevating axis Y; in the embodiment illustrated herein, the distance between rotation axis W and elevating axis Y is such that, in at least a part of the rotation path of star element 27, the centre of ammunition A to be picked up by star element 27 lies substantially on elevating axis Y.
In particular, the rotation axis W is spaced apart vertically (i.e. along the direction of the traversing axis Z) from elevating axis Y.
According to a further embodiment, transfer device 24 may advantageously be driven by a motor, e.g. via a gear transmission that controls the rotation of star element 27 about rotation axis W.
Feeding assembly 22 further comprises a conveying mechanism 28 configured to push ammunitions A along conveying guide 26. In particular, conveying mechanism 28 may be driven by means of a motor (not shown) and/or manually, e.g. by means of a crank 29.
According to one possible embodiment of the present invention, the transmission of the motion from conveying mechanism 28 in elevating mass 14 to transfer device 24 in traversing mass 12 may occur through a mechanical connection consisting of a differential gear (not shown in the drawing) that ensures synchronized motion.
Conveying mechanism 28 comprises a hollow sliding structure 30 and a conveying chain 32 sliding in the cavity defined by sliding structure 30. Some exemplary technical features of conveying chain 32 are visible in more detail in
Conveying mechanism 28 comprises also a plurality of pushing members 34 sliding in conveying guide 26 and carried by conveying chain 32. Each one of pushing members 34 is configured for pushing a respective ammunition A adjacent thereto, which is guided by conveying guide 26.
Sliding structure 30 extends substantially parallel to conveying guide 26. In particular, sliding structure 30 is fixed to conveying guide 26, e.g. being surrounded along at least a part of its extension by conveying guide 26.
Furthermore, as will be described more in detail hereinafter, preferably sliding structure 30 is essentially a rail in which conveying chain 32 slides and from/by which pushing members 34 are suspended and/or supported, which then extend and slide in uconveying guide 26. In particular, the rail comprises a plurality of rail portions 30a, 30b, extending parallel to and facing each other.
Conveying chain 32 forms a closed loop and is configured to transmit a forward motion to pushing members 34 mounted thereon. Also, conveying chain 32 comprises a plurality of chain links 36 mutually connected in an articulated manner. More in detail, chain links 36 can move, in particular by rotating in different planes, in order to follow the path delimited by conveying guide 26.
In the embodiment illustrated herein, each one of pushing members 34 is shaped substantially as a widened fork, the neck of which—which protrudes and is supported by respective chain link 36—branches off laterally into two arms.
In the embodiment illustrated herein, each one of chain links 36 substantially defines a closed-loop shape (e.g. wherein the closed loop forms a substantially rectangular or square shape).
As shown in detail in
In particular, pushing members 34 are arranged along conveying chain 32 spaced out by a predetermined distance, so that between two pushing members 34 a corresponding ammunition A can be housed, which must be guidedly transported along conveying guide 26. In particular, each one of pushing members 34 is mounted on a respective chain link 36 at predetermined intervals (e.g. at regular and periodic intervals) along conveying chain 32. More particularly, each one of pushing members 34 is mounted after a predefined number of successive chain links 36, depending on the diameter or calibre of the ammunition A to be conveyed.
Furthermore, each pushing member 34 is fixedly mounted to the respective chain link 36 along a mounting axis x1 substantially perpendicular to conveying chain 32.
As it will be further described below, chain links 36 carry respective sliding pins 38 on their sides.
In particular, sliding pins 38 rotatably support rollers 40 around themselves. Sliding pins 38 slide, preferably via rollers 40, within sliding structure 30, which, as aforementioned, substantially defines a rail along which conveying chain 32 is configured to slide and/or by which it is configured to be supported.
In particular, each roller 40 carried by the respective sliding pin 38 engages into a respective rail portion 30a, 30b that contributes to defining the sliding structure 30. In the embodiment illustrated herein, chain links 36 to which pushing members 34 are mounted have no associated sliding pin (and roller).
As illustrated in
More in detail, still with reference to the embodiment illustrated by way of example in
Conversely, each vertical chain link 36b (e.g. when it lacks and does not support an associated pushing member 34) has respective central sliding pin 38b protruding from conveying chain 32 on the side axially opposite to the side from which pushing members 34 extend. The end of central sliding pin 38b slidably engages into a corresponding central rail portion 30b of sliding structure 30.
In the embodiment illustrated herein, each pushing member 34 is supported along its mounting axis x1 through the interposition of an additional roller 40 between it and chain link 36. In particular, at one end roller 40 is rotatably mounted to chain link 36, while at the other end it is rotatably integral with pushing member 34.
With reference to
Moreover, lever 35 is moved angularly away from pushing member 34 about a thrust axis x2, e.g. substantially perpendicular to mounting axis x1. In particular, a thrust spring 37 is provided, which is mounted between pushing member 34 and lever 35. Thrust spring 37 abuts on pushing member 34 at one end and on lever 35 at the other end. In the implementation variant illustrated herein, thrust spring 37 is, advantageously, a torsion spring.
With reference to
In addition, still with reference to
With particular reference to
With particular reference to
In the embodiment illustrated herein, loading guide 46 defines a substantially straight and ascending loading path P2 for the ammunitions coming from conveying guide 26 and directed towards barrel 18.
Feeding assembly 22 further comprises a loading mechanism 48 configured to push the ammunitions A along loading guide 46 and towards the inlet of barrel 18. In particular, loading mechanism 48 comprises a plurality of loading star elements 50 arranged in series and mutually adjacent. Loading star elements 50 are configured to rotate and engage in succession ammunitions A which have come sideways from conveying guide 26 and which have arrived—still with a lateral orientation—at loading guide 46, so as to cause them to advance up to the inlet of barrel 18.
In particular, loading mechanism 48 is rigidly connected to firearm assembly 16, so that the actuation of the whole feeding assembly is regulated by firearm assembly 16 itself.
Of course, without prejudice to the principle of the invention, the forms of embodiment and the implementation details may be extensively varied from those described and illustrated herein by way of non-limiting example, without however departing from the scope of the invention as set out in the appended claims.
Number | Date | Country | Kind |
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102021000014819 | Jun 2021 | IT | national |
This application is a National Stage Application of PCT/IB2022/055273, filed Jun. 7, 2022, which claims benefit of priority to Italian Patent Application No. 102021000014819, filed Jun. 8, 2021, and which applications are incorporated herein by reference. To the extent appropriate, a claim of priority is made to each of the above disclosed applications.
Filing Document | Filing Date | Country | Kind |
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PCT/IB2022/055273 | 6/7/2022 | WO |