Ammunition Belt Link Separator with Cam-Actuated Spring Ejection
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Solution Overview
Problem
High-rate firing weapons using belt links for ammunition feeding face challenges in reliably releasing belt links after firing, as existing solutions often require manual intervention or inefficient mechanisms.
Innovation Solution
A separating device integrated at the connection point with a control cam and guides, combined with an ejection mechanism using a prestressed spring, ensures reliable release and disposal of belt links, coordinated with the firing cadence through a motor-assisted safety clutch or alternative preloading methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separating device with elastic tongues is used to separate belt links, then the belt links can be separated after firing, but the device requires complex elastic mounting and rail structures to achieve reliable separation
Solution Approach 1:
The separating device is divided into two functional modules: an integrated separating device with guide rails at the connection point, and a remote ejection device with prestressed spring. This segmentation allows each module to perform its specific function efficiently without requiring complex integration of all functions into a single structure.
Solution Approach 2:
A control cam is introduced as an intermediary element that translates the motion of belt links into the activation of the ejection mechanism. The cam works with the prestressed spring to timing the ejection action, serving as a mediator between the separating function and the ejection function.
2Extent of automation
If a prestressed spring ejection device is used to eject separated belt links, then belt links can be automatically ejected, but the spring must be continuously prestressed which requires significant energy input
Solution Approach 1:
The ejection mechanism operates periodically rather than continuously. The prestressed spring is recharged only when needed, synchronized with the firing cadence of the weapon. This periodic operation is achieved through a control cam that activates the ejection mechanism at appropriate intervals, reducing energy consumption compared to continuous prestressing.
Solution Approach 2:
The control cam system provides feedback-based timing for the ejection mechanism. The cam's position and motion are determined by the passage of belt links through the separating device, creating a feedback loop that automatically times the ejection action with the firing sequence without requiring continuous energy input.
3Manufacturing precision
If the separating device is integrated at the connection point with guides, then separation can occur directly at the hooks and eyes, but the device must be precisely matched to the width of connection points
Solution Approach 1:
The guide rails of the integrated separating device are designed with specific local dimensions that match the width of standard connection points (hooks and eyes). This local precision is concentrated at the separation point where it is most needed, while other parts of the device can accommodate variations. The ejection device is designed to work with this localized precision requirement.
4Productivity
If high-rate firing weapons use belt links for ammunition feeding, then ammunition can be supplied rapidly, but the separating device must coordinate with high firing cadence which increases operational complexity
Solution Approach 1:
The prestressed spring is pre-charged in advance during periods when the weapon is not firing or when belt links are being reloaded. This preliminary action stores energy that can be rapidly deployed during high-rate firing, allowing the ejection mechanism to keep up with high firing cadence without requiring complex real-time control during operation.
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
Ensures reliable and efficient separation and ejection of belt links, maintaining operational consistency even at high firing rates by coordinating the prestressing of the spring with the weapon's firing cadence, allowing continuous operation without manual intervention.
Implementation Method 1
The device has two elastically mounted tongues above and a rail below the belt links. The tabs are designed as elongated spring elements.
Implementation Method 2
The simplest form of the ejection device is a pretensionable spring.
Data Source
Figure 1~2
Figure 1a
Figure 3~4
AI summary
The separation apparatus (1) comprises a lower guide (10,11), the hooks and the loops that are connected over the hooks for transporting a holder of ammunition. The lower guide is provided on an upper guide as a spring (12), where the loops are aligned on the width of the hooks.