Claims
- 1. An improved arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon with independent external drive, said movable parts include at least one control drum for driving the breech block of the machine cannon which drum is rotatably mounted in said arrangement, said control drum having the endless groove disposed on its outer periphery, a cam disc operatively mounted in said arrangement so as to rotate in dependence to said control drum, a blocking element having propellant charge gas pressure actuated control means operatively connected thereto which maintain said blocking element in a release position relative to said cam disc during the breech block locking time; however, when a misfiring or delayed firing occurs said blocking element blockingly contacting said cam disc, the improvement comprising:
- (a) a rotating rod spring form-lockingly and coaxially connected adjacent to one of its ends to said cam disc;
- (b) said rotating rod spring being coaxially and form-lockingly connected to said control drum adjacent to the other one of its ends, a gas pressure-actuated locking bolt is slidably mounted in said arrangement and bears against the periphery of said cam disc, and control means having rotatable transfer means operatively connecting said cam disc via said transfer means to said blocking element;
- (c) when said blocking element is in a blocking position the kinetic energy of the mass of the movable parts forming the breech block drive is elastically braked via said rotating rod spring;
- (d) the blocking position of said blocking element is assumed even with a delayed ignition by interrupting the propellant gas feed to said blocking element; and
- (e) wherein said rotating rod spring is coaxially disposed within at least one control drum.
- 2. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 1, including the following additional features:
- (a) at the other one of its ends said rod spring having a toothed ring portion by means of which said rod spring is drivingly meshingly connected to a first gear drive;
- (b) the number of revolutions of said control drum relative to the number of revolutions of the rod spring forms a gear ratio i=1;
- (c) each revolution of said rod spring corresponds to a blocking and unblocking cycle of the breech block being driven via said endless groove on said at least one control drum.
- 3. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 2, including the following additional features:
- (a) said cam disc having a first cam surface extending parallel to the rotational direction of the cam disc for coaction with said slidable locking bolt and a second spirally shaped cam surface having an end stop face parallel to said first cam surface for coaction with said blocking element;
- (b) said first cam surface having a first portion which precedes in the rotational direction of the cam disc the stop face on said second cam surface, which first portion is shaped in such a way that said locking bolt bearing thereagainst closes a passage for transferring propellant charge gases for a predetermined period of time of the firing cycle, which occurs before said blocking element makes contact with said stop face; and
- (c) said first cam surface including a second portion which precedes in the rotational direction said first portion and has a smaller diameter than the maximum diameter of said first portion, the difference between the maximum diameter of said first portion and the smaller diameter of said second portion representing the stroke of said locking bolt when sliding from said first portion to said second portion along said first cam surface, whereby when said locking bolt slides over said second portion of said cam surface said passage for transferring propellant charge gases is opened.
- 4. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 3, wherein said locking bolt is slidably mounted in a bore of said arrangement, said passage for transferring propellant charge gases being in communication with said bore, said locking bolt being cylindrically shaped and having an annular groove for opening and closing said passage.
- 5. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 4, including the following additional features:
- (a) wherein said control means and said cam disc are integrally and form-lockingly connected with said one end of said rod spring;
- (b) said form-locking connection being formed by intermeshing serrated peripheral surfaces on a bore of said cam disc and the portion of said rod spring extending therethrough.
- 6. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 5, including the following additional features:
- (a) said control means and transfer means having respectively conical gear wheels which meshingly engage each other;
- (b) said control means being coaxially mounted on an extension of said rod spring so as to rotate jointly therewith and said transfer means being operatively connected to an unlocking disc;
- (c) a blocking slider being slidably mounted in said arrangement and first means biasing said blocking slider for blocking engagement with said blocking element against the action of said unlocking disc.
- 7. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 7, including second means biasing said blocking element into the blocking position against said end stop face of said second spirally shaped cam surface, said blocking element is movable into a release position relative to said cam disc against the action of said second biasing means independent from the propellant charge gas pressure.
- 8. The improvement in an arrangement for rapidly stopping at least a portion of the movable parts of a machine cannon as set forth in claim 7, including the following additional features:
- (a) wherein said blocking element includes an annular propellant charge gas pressure receiving surface and a lifting surface;
- (b) and a lever pivotally mounted in said arrangement for separately lifting said blocking element via contact with said lifting surface against the action of said second biasing means.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3316072 |
May 1983 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of our copending application Ser. No. 604,907, filed Apr. 27, 1984.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4193335 |
Tassie |
Mar 1980 |
|
4508006 |
Post et al. |
Apr 1985 |
|
4550641 |
Bruderer et al. |
Nov 1985 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
0063680 |
Nov 1982 |
DEX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
604907 |
Apr 1984 |
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