Gun Barrel Dud Removal Apparatus with Segmented Sticking Mechanism
Solution Overview
Problem
Conventional dud removing apparatuses lack a sufficient sticking mechanism to securely attach to the inner surface of a gun barrel, leading to inefficient and unstable removal of duds, which can result in accidents during the removal process.
Innovation Solution
The apparatus incorporates a sticking means with a rotating main shaft, a slide, and extenders with inclined surfaces to securely attach to the gun barrel, combined with a pushing mechanism to safely remove the dud after attachment, utilizing a motor-driven system and sensors for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If guide rollers are used to move the dud removing apparatus forward, then the apparatus can advance along the gun barrel, but the sticking force is insufficient to prevent backward movement during dud removal
Solution Approach 1:
The sticking means is divided into multiple extenders (first extender, second extender, third extender) that can be independently extended to contact the gun barrel inner surface. This segmentation allows the sticking force to be distributed across multiple contact points, providing both forward movement capability and stable anchoring during dud removal operations.
Solution Approach 2:
The extenders are designed to be dynamically extendable and retractable through the slide mechanism. During forward movement, extenders are extended to provide sticking force; during dud removal, they maintain extended position to prevent backward movement. This dynamic adjustment allows the system to adapt its sticking force according to operational requirements.
2Volume of moving object
If the apparatus is designed to be compact for manual insertion, then it can be easily inserted into the gun barrel, but it lacks the sticking mechanism to securely attach during removal operations
Solution Approach 1:
The extenders are nested within the apparatus body when retracted, maintaining a compact profile for easy insertion into the gun barrel. When sticking force is required, the extenders are extended outward from the apparatus body to contact the gun barrel inner surface. This nesting arrangement allows the apparatus to maintain small volume during insertion while providing extended sticking capability during removal operations.
Solution Approach 2:
The slide mechanism enables dynamic transformation of the apparatus from a compact state (extendors retracted) to an extended state (extendors protruding). This dynamic configuration allows the apparatus to be easily inserted in compact form while providing sufficient sticking force when extendors are extended to contact the gun barrel surface.
3Device complexity
If the pressing mechanism is directly connected to the forward driving means, then the structure is simplified, but the pushing force cannot be applied effectively without stable sticking
Solution Approach 1:
The sticking means is activated in advance to securely attach the apparatus to the gun barrel inner surface before the pressing mechanism is engaged to remove the dud. This preliminary sticking action ensures that when the pressing mechanism applies force to push the dud out, the apparatus remains firmly positioned and does not move backward, thereby enabling effective dud removal despite the simple direct connection structure.
Solution Approach 2:
The system transitions from a static simple connection to a dynamic state where the sticking means is extended to provide anchoring force. This dynamic extension of extenders through the slide mechanism allows the simple pressing structure to effectively apply pushing force without backward movement, improving dud removal efficiency while maintaining structural simplicity.
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
The solution enables the dud removing apparatus to securely stick to the gun barrel, allowing for efficient and stable removal of duds, reducing the risk of accidents and ensuring prompt operation, even in emergency situations.
Implementation Method 1
a built-in motor to provide a rotating force
Implementation Method 2
extensors having an inner surface that forms a sloping surface corresponding to the inclined surface and extending to an outside to be stuck on the inner surface of the gun barrel
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An apparatus for removing a dud (4) is disclosed, which makes it possible to safely remove a dud (4) from various kinds of guns used as long-range firepower when a shell is caught in the inner diameter of a gun barrel and thus is not discharged. The apparatus includes a forward driving means (10) providing a propulsive force for forwarding the apparatus along an inner surface of a gun barrel, a press driving part (20) directly connected to the forward driving means (10) and having a built-in motor (21) to provide a rotating force, a sticking means (30) connected to the press driving part (20) and extended to an outside to be tightly stuck on the inner surface of the gun barrel by a main shaft (25) being rotated by the motor (21), and a pushing part (40) having one end part connected to the sticking means (30) and the other end part coupled to a cap (40b) that is in contact with the dud, and pushing the cap (40b) through a forward movement of the main shaft (25) after the sticking on the inner surface of the gun barrel is performed by the sticking means (30).