Breechblock Recoil Extraction Mechanism
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Solution Overview
Problem
In externally driven automatic weapons, large forces act on the breechblock drive when unlocking and removing the cartridge case, particularly in chain-driven systems, requiring significant extraction forces.
Innovation Solution
The breechblock and weapon barrel take over the unlocking and removal of the cartridge case using the recoil energy of the weapon, shifting the forces from the drive to the recoiling masses, allowing the breechblock to unlock and remove the case during its forward motion after recoil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the breechblock drive is used to unlock the breechblock and remove the cartridge case, then the unlocking and removal functions are achieved, but large forces act on the drive requiring significant extraction forces
Solution Approach 1:
The patent extracts the unlocking and cartridge case removal function from the breechblock drive by introducing a separate extractor mechanism that operates independently during weapon recoil. The extractor is releasably connected to the breechblock and actively engages the cartridge case bottom to perform extraction without requiring forces from the main drive system.
Solution Approach 2:
The extractor mechanism utilizes the weapon's own recoil energy to perform the extraction function. During recoil, the extractor is automatically activated by the relative movement between the breechblock and weapon barrel, converting the recoil motion into the extraction action without requiring additional drive forces.
2Stability of the object's composition
If the breechblock is mechanically connected to the drive, then the breechblock can be positioned and locked, but large forces are transmitted to the drive during unlocking and extraction
Solution Approach 1:
The patent segments the breechblock system into functionally independent components: the breechblock itself for positioning and locking, and a separate extractor mechanism for extraction. The extractor is releasably connected to the breechblock, allowing it to be decoupled during recoil to perform extraction independently without transmitting forces to the main drive.
Solution Approach 2:
The extractor acts as an intermediary mechanism between the breechblock and the cartridge case. It is actively connected to engage the cartridge case for extraction, then releasably disconnected to allow independent operation during recoil, serving as a mediator that performs extraction without involving the main breechblock drive.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces or eliminates the forces acting on the breechblock drive, minimizing the extraction forces needed, particularly in external drives, by leveraging the recoil energy for unlocking and removal, thus enhancing the operational efficiency of the weapon system.
Implementation Method 1
the actual unlocking of the breechblock and the removal of the cartridge case are carried out during the forward motion of the recoiling mass after the recoil
Data Source
AI summary
A weapon system having a breechblock, wherein the breechblock can be mechanically connected to a drive of the weapon system. The weapon system comprises means which are designed in such a way that a mechanical separation occurs between the breechblock and the breechblock drive with the recoil of the recoiling masses of the weapon system. With the forward motion of the recoiling masses, the mechanical connection between the breechblock drive and the breechblock is re-formed.