Irrigation Drive Unit with Hydraulic Steering
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Solution Overview
Problem
Conventional irrigation systems face issues with drive wheels that cannot detect changes in stress on the span, leading to arching and increased stress, which results in system fatigue and inefficient irrigation patterns.
Innovation Solution
A drive unit equipped with vertical tower members, a base beam, drive wheels, a sensor, and a hydraulic unit with connecting rods that can detect stress changes and adjust the drive wheels' alignment to alleviate stress, allowing for circular or linear movement and specific irrigation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If drive wheels are aligned in a straight forward configuration, then the structure is simple and easy to manufacture, but this causes arching on the truss span resulting in increased stress on the pipeline
Solution Approach 1:
The drive wheel alignment is changed from a fixed straight-forward configuration to a dynamic steerable configuration. The drive unit incorporates a steering mechanism that allows the drive wheels to be turned at an angle relative to the longitudinal axis of the base beam, enabling the system to adjust alignment dynamically to eliminate stress on the pipeline while maintaining structural simplicity.
2Strength
If the drive unit structure is made robust to handle heavy loads, then strength is improved, but the drive unit becomes cumbersome and creates arching or pulling on the truss span
Solution Approach 1:
The drive unit incorporates a steerable mechanism that allows the drive wheels to be angled relative to the base beam, transforming the structure from a rigid, cumbersome configuration to a dynamic, adaptable one. This steering capability enables the drive unit to navigate and align properly, reducing arching and pulling effects on the truss span while maintaining the necessary structural strength.
3Measurement precision
If GPS units and communications links are added to control the steerable drive unit, then positioning accuracy is improved, but the system becomes complex and susceptible to error from inconsistent drive wheel motion
Solution Approach 1:
The system incorporates sensors that detect stress on the span and provide feedback to the control system. When stress is detected, the sensor triggers a hydraulic unit to adjust the drive wheel alignment, creating a closed-loop feedback mechanism that automatically corrects positioning errors and eliminates the need for complex GPS-based positioning systems.
4Adaptability or versatility
If the drive unit can steer the drive wheels to realign spans, then adaptability is improved, but the mechanism becomes more complex
Solution Approach 1:
The steering mechanism utilizes a hydraulic unit with pistons that are electrically controlled to turn the drive wheels. This hydraulic system provides smooth, controlled adjustment of the drive wheel alignment, enabling the drive unit to steer and realign spans adaptively while maintaining a relatively simple mechanical structure compared to alternative steering mechanisms.
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 reduces stress on the irrigation system, minimizes material usage, and enhances the system's ability to adapt to geographic features and storage configurations, thereby improving irrigation efficiency and reducing system fatigue.
Implementation Method 1
The sensor mounted on the pipeline detects the stress on the pipeline and activates the hydraulic unit
Implementation Method 2
An electrically controlled hydraulic unit is coupled with the sensor and includes a pair of pistons for pulling or pushing the connecting rods
Data Source
AI summary
A drive unit for an irrigation system comprising, a pair of vertical tower members, a base beam, a pair of drive wheels, a sensor, a hydraulic unit and a pair of connecting rods. A pair of drive wheels each is pivotally connected to the front end and the back end of the base beam. Each of the pair of drive wheels are operably connected to a gearbox and a motor. An electrically controlled hydraulic unit is coupled with the sensor and includes a pair of pistons for pulling or pushing the connecting rods. The sensor mounted on the pipeline detects the stress on the pipeline and activates the hydraulic unit. When a change in stress is detected in the pipeline of the irrigation system, the sensor triggers the hydraulic unit that pulls or pushes the connecting rods to turn the drive wheels and to reduce the stress on the span of the irrigation system.