Consumable Shin for Tillage Shank Depth Adjustment
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Solution Overview
Problem
Conventional tillage shank assemblies with integrated fertilizer tubes face challenges in adjusting fertilizer application depth and suffer from premature wear due to abrasive soil forces, requiring frequent replacement of side plates and time-consuming welding processes.
Innovation Solution
A consumable protective shin made of a softer material, such as plastic or thermoplastics like nylon 6/6, is attached to the shank assembly to overlay the area subject to abrasive forces, reducing turbulence and extending the life of side plates to match the shoe's lifespan without needing tractor removal for implementation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a consumable protective shin is added to protect against abrasive forces, then the life of side plates is extended, but the device complexity increases
Solution Approach 1:
The protective function is segmented into a separate consumable shin component that can be independently replaced, protecting the more valuable side plates while allowing the shin to be discarded when worn. This segmentation resolves the contradiction by extending side plate life through the protective shin while managing complexity through modular design.
Solution Approach 2:
The consumable protective shin is designed as a low-cost, short-lived component that absorbs abrasive wear instead of the expensive side plates. By making the protective element disposable and inexpensive, the system extends side plate life without requiring complex maintenance systems, as the shin is simply replaced when worn.
2Device complexity
If fertilizer tubes are permanently welded to the shank at a fixed location, then the structure is simplified, but the adaptability to different fertilizer depths is reduced
Solution Approach 1:
The fertilizer tube system transitions from a fixed welded configuration to an adjustable configuration where tubes can be repositioned to different depths. This dynamic capability allows the same simplified structure to adapt to varying fertilizer application requirements without requiring multiple different shank designs.
Solution Approach 2:
The shank assembly is designed with universal mounting capabilities that allow fertilizer tubes to be positioned at multiple depths. This multi-functional design enables a single shank structure to serve multiple fertilizer application scenarios, maintaining structural simplicity while achieving adaptability.
3Adaptability or versatility
If adjustable fertilizer tubes are provided to change fertilizer depth, then the adaptability is improved, but the ease of operation is reduced due to difficult and time-consuming adjustments
Solution Approach 1:
The fertilizer tube mounting system incorporates quick-adjust mechanisms that allow operators to change tube positions and depths rapidly without complex procedures. This dynamic adjustment capability maintains adaptability while dramatically improving ease of operation compared to conventional adjustment systems.
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 consumable protective shin effectively dampens abrasive forces, reducing wear on side plates and extending their lifespan to match the shoe's, allowing for easy replacement in the field and lowering overall material costs by consuming faster than the side shields.
Implementation Method 1
a consumable protective shin is attached to the shank assembly to overlay the area subject to abrasive forces
Implementation Method 2
The consumable protective shin effectively dampens abrasive forces, reducing wear on side plates
Implementation Method 3
reducing turbulence and extending the life of side plates
Data Source
AI summary
A consumable shin for a tillage shank includes an integral U-shaped shin having a first side, a second side, and a bottom; the first side and the second side being spaced apart to form a volume therebetween; the first side having a first side surface having first side length and a first side width; the second side having a second side surface having a second side length and a second side width; the first side length being from a rear edge of a guard of a shoe engaging the tillage shank to a forward edge of a first side shield engaging the tillage shank; the second side length being from the rear edge of the guard of the shoe engaging the tillage shank to a forward edge of a second side shield engaging the tillage shank.