System and method for the reversible transfer of ammunition between a primary magazine and a secondary magazine in an automatic cannon

Patent metadata

Field	Value
Publication number	US-10935336-B2
Application number	US-201716310874-A
Country	US
Kind code	B2
Filing date	Jun 20, 2017
Priority date	Jun 21, 2016
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

An ammunition loading system for loading ammunition into a primary magazine in an automatic cannon includes at least one secondary magazine arranged in an ammunition store beneath the primary magazine of the automatic cannon, a hoisting device for transporting the aforementioned at least one secondary magazine from the ammunition store to the primary magazine, a docking and transfer mechanism for the docking of the secondary magazine with the primary magazine and for the transfer of ammunition between the secondary magazine and the primary magazine, as well as a common drive arrangement for synchronous driving of the secondary magazine and the primary magazine during the transfer of ammunition. A method for the aforementioned ammunition loading system is also provided.

First claim

The invention claimed is:

1. An ammunition transfer system for reversibly transferring ammunition in an automatic cannon, comprising:
a primary magazine, at least one secondary magazine, a hoisting device comprising a chain drive arrangement for transporting the at least one secondary magazine to the primary magazine,
a docking and transferring arrangement for docking the at least one secondary magazine with the primary magazine and for transferring the ammunition between the at least one secondary magazine and the primary magazine, wherein the at least one secondary magazine and the primary magazine each comprise a respective chain conveyor for feeding the ammunition to ammunition outlets of the at least one secondary magazine and the primary magazine, wherein the respective chain conveyors are driven synchronously with one another via at least one drive arrangement for driving the at least one secondary magazine and the primary magazine when the ammunition is transferred between the at least one secondary magazine and the primary magazine, and wherein the docking and transferring arrangement and the at least one drive arrangement are configured to reversibly transfer all ammunition in the primary magazine to the at least one secondary magazine.

2. The ammunition transfer system as claimed in claim 1 , wherein the hoisting device comprises two vertical self-supporting pairs of rails beneath the primary magazine, the two pairs of rails comprising a front pair of rails and a rear pair of rails, configured for transporting the at least one secondary magazine, wherein the chain drive arrangement of the hoisting device is attached and fixed to an outside of the front pair of rails.

3. The ammunition transfer system as claimed in claim 1 , further comprising a common drive arrangement for synchronized driving of the at least one secondary magazine and the primary magazine when the ammunition is transferred from the at least one secondary magazine to the primary magazine.

4. The ammunition transfer system as claimed in claim 1 , further comprising two separate drive arrangements for independent driving of the at least one secondary magazine and the primary magazine when the ammunition comprises mixed types of ammunition which are transferred from the at least one secondary magazine to different positions in the primary magazine.

5. The ammunition transfer system as claimed in claim 4 , further comprising a switching unit for switching between a common drive arrangement and the two separate drive arrangements.

6. The ammunition transfer system as claimed in claim 1 , further comprising a programmable control and monitoring unit for controlling and monitoring the hoisting device and the docking and transferring arrangement.

7. A method for reversibly transferring the ammunition in the ammunition transfer system as claimed in claim 1 , wherein the method comprises:
transporting the at least one secondary magazine to the primary magazine via the hoisting device,
docking the at least one secondary magazine with the primary magazine,
transferring ammunition from the at least one secondary magazine to the primary magazine via the docking and transferring arrangement and via the at least one drive arrangement, and
reversibly transferring all ammunition in the primary magazine to the at least one secondary magazine via the docking and transferring arrangement and via the at least one drive arrangement.

8. The method as claimed in claim 7 , wherein the at least one secondary magazine is arranged in a transport carriage and is subsequently docked to the chain drive arrangement of the hoisting device.

9. An ammunition transfer system for reversibly transferring ammunition in an automatic cannon, comprising:
a primary magazine, at least one secondary magazine, a hoisting device comprising a chain drive arrangement for transporting the at least one secondary magazine to the primary magazine,
a docking and transferring arrangement for docking the at least one secondary magazine with the primary magazine and for transferring the ammunition between the at least one secondary magazine and the primary magazine, wherein the at least one secondary magazine and the primary magazine each comprise a respective chain conveyor for feeding the ammunition to ammunition outlets of the at least one secondary magazine and the primary magazine, wherein the respective chain conveyors are driven synchronously with one another via at least one drive arrangement for driving the at least one secondary magazine and the primary magazine when the ammunition is transferred between the at least one secondary magazine and the primary magazine,
wherein the hoisting device comprises a self-supporting framework comprising two parallel side-mounted vertical pairs of members between an ammunition store and the primary magazine, wherein the two pairs of members are each linked together via a lower pair of transverse members, two intermediate pairs of transverse members and an upper pair of transverse members, wherein, arranged on an inside of the two vertical pairs of members, are four vertical parallel support rails, two of the four vertical support rails being front support rails and two of the four vertical support rails being rear support rails, between the front support rails and the rear support rails the at least one secondary magazine is transported upwards and downwards to the primary magazine via the chain drive arrangement of the hoisting device, wherein the chain drive arrangement is arranged in the framework as a loop on the inside of the two vertical pairs of members of the framework via chain wheels and drive wheels mounted on the lower pair of transverse members, the two intermediate pairs of transverse members and the upper pair of transverse members of the framework.

10. An ammunition transfer system for reversibly transferring ammunition in an automatic cannon, comprising:
a primary magazine, at least one secondary magazine, a hoisting device comprising a chain drive arrangement for transporting the at least one secondary magazine to the primary magazine,
a docking and transferring arrangement for docking the at least one secondary magazine with the primary magazine and for transferring the ammunition between the at least one secondary magazine and the primary magazine, wherein the at least one secondary magazine and the primary magazine each comprise a respective chain conveyor for feeding the ammunition to ammunition outlets of the at least one secondary magazine and the primary magazine, wherein the respective chain conveyors are driven synchronously with one another via at least one drive arrangement for driving the at least one secondary magazine and the primary magazine when the ammunition is transferred between the at least one secondary magazine and the primary magazine,
wherein the docking and transferring arrangement comprises four locking bolts arranged in a corner of an ammunition inlet of the primary magazine, four preloaded, V-shaped projecting articulations, movably connected to the four locking bolts, so that the locking bolts, during activation of the articulations, are displaced radially from a closed blocking position into an open position in the ammunition inlet of the primary magazine, wherein the at least one secondary magazine comprises four gate devices arranged in the corners of the ammunition outlets of the at least one secondary magazine, each said gate device being enclosed by a casing comprising a contact surface, a toothed wheel, a chain wheel and a chain link arranged in conjunction with the chain wheel which is driven by the toothed wheel, so that, when the at least one secondary magazine is transported towards the primary magazi

Assignees

• Bae Systems Bofors Ab

Inventors

• Nilsson Andreas

Classifications

• F41A9/04 Primary

  using endless-chain belts carrying a plurality of ammunition · CPC title

• F41A9/76 Primary

  Magazines having an endless-chain conveyor · CPC title

• F41A9/21

  in a vertical direction (F41A9/23 takes precedence) · CPC title

• F41A9/82

  Reloading {or unloading} of magazines · CPC title

• F41A9/24

  using a movable magazine or clip as feeding element · CPC title