Lightweight Stunning Rod Segmentation and Asymmetry
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pneumatic animal stunners face issues with wear and drag in moving parts, requiring periodic replacement and leading to increased operational costs and operator fatigue due to the heavy weight and density of steel stunning rods.
Innovation Solution
The development of a stunning rod with a lighter elongated body made of materials like aluminum, paired with a detachable hardened steel tip, which reduces wear and drag, and is designed to slide easily without rotation, thereby improving the stunner's efficiency and operator safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel stunning rod is used, then the rod has sufficient strength and durability, but the weight and density increase causing operator fatigue and reduced handling ease
Solution Approach 1:
The stunning rod is divided into two separate components: a lightweight elongated body (aluminum or aluminum alloy) and a detachable hardened steel tip. The elongated body provides the necessary length and structural support with minimal weight, while the steel tip provides the required hardness and durability for stunning. This segmentation allows each component to be optimized for its specific function, resolving the contradiction between overall strength and weight.
Solution Approach 2:
The stunning rod combines two different materials with complementary properties: aluminum (or aluminum alloy) for the elongated body and hardened steel for the tip. The aluminum provides low density and light weight, while the hardened steel provides high strength and wear resistance. This composite construction resolves the contradiction by integrating materials that excel in different properties into a single functional assembly.
2Productivity
If the stunning rod slides within the inner chamber, then the stunner operates efficiently, but rotation and wear occur reducing reliability
Solution Approach 1:
The elongated body is given a non-circular cross-section (asymmetric shape) that matches the corresponding asymmetric guide surface in the inner chamber. This asymmetric pairing prevents rotation of the stunning rod during operation, as the rod can only move linearly along the guide surface. This resolves the contradiction by eliminating rotational movement that causes wear while maintaining smooth linear sliding for efficient operation.
Solution Approach 2:
The patent replaces the traditional circular cross-section (which allows rotation) with a non-circular cross-section that mechanically prevents rotation through geometric constraint. This substitution of the basic geometric form eliminates the rotational degree of freedom, preventing wear between the rod and guide surface while maintaining the sliding mechanism's efficiency.
3Duration of action of stationary object
If a heavy steel stunning rod is used, then the rod is durable, but operator fatigue and injury risk increase
Solution Approach 1:
By segmenting the stunning rod into a lightweight aluminum body and a durable steel tip, the overall weight is dramatically reduced for easier handling and reduced operator fatigue. The durability is preserved in the steel tip where it is most needed for withstanding repeated stunning impacts. This segmentation resolves the contradiction between durability and ease of operation.
Solution Approach 2:
The hardened steel tip is applied locally only at the forward end of the aluminum elongated body, where durability is most critical for withstanding stunning impacts. The rest of the rod maintains the lightweight aluminum construction for ease of handling. This local application of heavy material only where necessary resolves the contradiction between overall durability and operator comfort.
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 results in reduced wear and drag, lower compressed air usage, improved operator comfort, and increased reliability of the stunning process, while also reducing the risk of operator injury and lowering manufacturing costs.
Implementation Method 1
pneumatic animal stunner
Implementation Method 2
catch for alternately holding and releasing the stunning rod
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A pneumatic stunner for stunning an animal has a piston slideable within an inner chamber, and a stunning rod driven by the piston forward and rearward towards and away from the front end of the housing. The stunning rod has an elongated body having a longitudinal axis and a detachable hardened tip. The density of the material comprising the elongated body is less than the density of the material comprising the detachable hardened tip.