Ground-Penetrating Accessory Identification via Tractor Lower-Link Force
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Solution Overview
Problem
Existing methods for identifying ground-penetrating accessories on agricultural tractors are limited to detecting their presence only after ground processing has begun, based on tensile forces, lacking universal identification capabilities.
Innovation Solution
A method using sensor arrangements integrated into the lower links of a three-point power lift to measure tensile forces, allowing the control unit to identify a ground-penetrating accessory by detecting a static negative value ΔF when the links are raised, enabling categorization and controlling accessory-related mass relationships for active vibration damping and vertical spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tensile force sensing is used to identify ground-penetrating accessories, then accessory identification is possible, but identification only occurs after ground processing has begun (lacking universal identification)
Solution Approach 1:
The patent applies preliminary action by detecting the static negative value ΔF in the tensile force path during the raising phase of the lower links, before the ground processing operation actually begins. This allows the accessory to be identified in advance, enabling universal identification capability that works regardless of whether ground processing has started or not.
2Measurement precision
If force measurement pins are used in the lower links, then tensile force can be measured, but the identification method is limited to specific operating conditions
Solution Approach 1:
The patent applies parameter changes by analyzing the static negative value ΔF in the tensile force path during the raising phase of the lower links. This parameter-based approach allows the system to identify accessories universally across different operating conditions, not just during ground processing, thereby enhancing the versatility of the identification method while maintaining measurement precision.
3Adaptability or versatility
If universal identification is achieved through tensile force path analysis, then accessory detection is improved, but additional sensor arrangements and control logic are required
Solution Approach 1:
The patent applies universality by using the existing tensile force sensing capability in the lower links for dual purposes: both for tensile force control during ground processing and for universal accessory identification. This multi-functionality approach enhances accessory identification universality while minimizing the need for additional separate sensor arrangements, thereby managing system complexity effectively.
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
Enables universal identification of ground-penetrating accessories, facilitating active vibration damping and precise vertical control, enhancing operational efficiency and soil processing accuracy.
Implementation Method 1
a sensor arrangement by means of which a tensile force which occurs on the lower link is established
Data Source
AI summary
A method for identifying a ground-penetrating accessory on an agricultural tractor which has a rear three-point power lift having left and right lower links supported at lower securing locations of the three-point power lift to be pivoted vertically and raised and lowered by a lifting mechanism, includes measuring via a sensor arrangement a tensile force occurring on one or more of the left and right lower links, and drawing via a control unit a conclusion relating to a ground-penetrating accessory which is attached to the lower links when it identifies that the tensile force path when the lower links are raised approaches a static negative value.