Roller Slip Control for Tillage Combinations
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Solution Overview
Problem
Existing tillage combinations fail to maintain optimal ground pressure and traction, leading to soil shifting instead of crumbling, poor leveling results, and increased tractive effort, which results in yield losses and potential component overload.
Innovation Solution
A control device regulates the pressure load on the roller using electrical, pneumatic, or hydraulic systems, determining the rotational speed and working speed to maintain a specific slip limit, adjusting the pressure load via servomotors, pneumatic cylinders, or hydraulic cylinders, and redistributing weight to the tractor chassis to prevent excessive slip and ensure optimal ground engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ground pressure of the roller is increased to ensure optimal working result and reconsolidation, then the reconsolidation effect is improved, but the tractive effort requirement increases significantly and the roller may stop due to dam formation
Solution Approach 1:
The patent implements automatic dynamic adjustment of the roller's ground pressure through a control device that continuously monitors rotational speed and working speed, adjusting the pressure load in real-time to maintain optimal slip conditions without requiring manual intervention or fixed pressure settings
Solution Approach 2:
The control device uses feedback from rotational speed sensors and working speed measurements to automatically regulate the pressure load on the roller, creating a closed-loop control system that maintains optimal operating conditions by comparing actual performance against target slip limit values
2Reliability
If the ground pressure of the roller is kept constant to ensure optimal working result, then the reconsolidation effect is maintained, but the roller may become overloaded or stop due to dam formation in front of it
Solution Approach 1:
The system transitions from static constant pressure to dynamic pressure adjustment, where the roller's ground pressure automatically adapts to changing soil conditions and operational parameters, preventing dam formation while maintaining effective reconsolidation through continuous optimization of the pressure load
Solution Approach 2:
The control device monitors rotational speed and working speed continuously, using this feedback to adjust pressure load dynamically, thereby preventing harmful dam formation while maintaining optimal working results through real-time adaptation to actual field conditions
3Speed
If the pressure load on the roller is increased to maintain rotational speed, then the slip limit is controlled, but the tractive effort requirement increases and energy consumption rises
Solution Approach 1:
The control device establishes a closed-loop system that measures actual rotational speed and working speed, comparing them against target values to automatically adjust pressure load, thereby maintaining optimal slip conditions and rotational speed while minimizing energy consumption through precise, adaptive pressure control rather than constant high pressure
Solution Approach 2:
The system dynamically changes the pressure load parameter based on real-time operational conditions, adjusting it to maintain optimal slip limit values and rotational speed while minimizing energy consumption, rather than maintaining fixed high pressure that would increase tractive effort requirements
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
This solution ensures the roller operates safely and efficiently, maintaining optimal ground pressure and reducing tractive effort, thereby preventing soil shifting and improving reconsolidation and leveling results while avoiding yield losses.
Implementation Method 1
the roller (4) which is arranged in the working direction behind the tillage tools (2) and in front of the sowing coulters (3)... ensuring that the roller (4) is always safely driven from the ground... maintaining optimal ground pressure
Data Source
Figure 1
AI summary
The invention relates to an ordering combination 1 with soil cultivation tools 2, seed coulters 3 and a roller 4, in which the rotational speed of the roller 4 and the actual working speed are recorded and compared, and in which the pressure load of the roller 4 on the ground is controlled via a control device 6 in such a way that a predetermined slip limit of the roller 4 is never exceeded.