Mechanical Mortar Shell Extractor for Safe Fuse Handling
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Solution Overview
Problem
Existing mortar shell extraction systems are unsafe and inefficient, particularly when dealing with shells that have electronic fuses or are not completely dry, as they can initiate during extraction and require complex, hazardous procedures.
Innovation Solution
A mortar shell extraction system with gripping means adapted to hold shells by the fuse, connected via a shaft to driving means that transmit force for extraction, allowing for safe and reliable removal of any type of shell without the need for different systems based on shell diameter or fuse type, featuring holding, actuating, and safety elements for user safety and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If permanent magnets are used for extracting shells, then extraction force is improved, but safety deteriorates due to risk of initiating electronic fuses
Solution Approach 1:
The patent replaces the magnetic field-based extraction system with a purely mechanical extraction system. The mechanical extractor uses a shaft, gripping means, and driving means to physically retrieve shells without employing magnets, thereby eliminating the risk of initiating electronic fuses while maintaining effective extraction capability through mechanical force.
2Adaptability or versatility
If complex guiding parts and cords are used for extraction, then extraction capability is improved, but device complexity and safety deteriorate
Solution Approach 1:
The patent removes the complex guiding parts and cords from the extraction system. The simplified mechanical extractor consists of a shaft with gripping means that can be directly inserted into the mortar tube without requiring external guiding mechanisms or cords, thereby reducing device complexity while maintaining extraction capability.
Solution Approach 2:
The mechanical extractor is designed as a universal device that can extract shells of different types and conditions (dry or wet surfaces) through its adaptable gripping means, eliminating the need for multiple specialized systems or complex preparation procedures required by previous designs.
3Reliability
If manual intervention is required for shell extraction, then extraction reliability is improved, but safety deteriorates due to proximity to line of fire
Solution Approach 1:
The patent extends the extraction system along the longitudinal axis of the mortar tube by providing a shaft with sufficient length. This allows the operator to insert the gripping means deep into the tube and perform extraction operations from a safe distance, moving the operator's position further away from the line of fire while maintaining reliable manual control over the extraction process.
Data Source
AI summary
The present invention relates to a mortar shell extraction system, comprising gripping means adapted for being inserted into the mortar and holding the shell by the fuse, at least one connecting shaft connected to the gripping means, driving means connected to the at least one connecting shaft and configured for transmitting a driving force to the gripping means through the at least one connecting shaft.