Hydraulic Circuit Auto-Loading for Agricultural Applicator Changeovers
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Solution Overview
Problem
Self-propelled agricultural product applicators require complex and time-consuming reconfiguration of hydraulic and electrical interfaces for different product delivery units, leading to inefficiencies and increased risk of error during changeovers, especially when dealing with varying hydraulic power requirements.
Innovation Solution
A localized hydraulic circuit configuration detection and loading arrangement using a unique pattern of pins in the electrical interface connector to selectively connect or bypass hydraulic fluid flow from continuously running pumps to the product delivery unit, allowing for quick and error-reduced changeovers between different configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple continuously running pumps are used to provide hydraulic power to different product delivery units, then hydraulic power availability is improved, but power consumption and fluid heating increase
Solution Approach 1:
The system dynamically switches pumps between operating modes (bypass vs. product delivery) based on real-time demands of different product delivery units. The control system adjusts pump operation from static continuous running to dynamic on-demand operation, matching hydraulic power supply to actual workload requirements.
Solution Approach 2:
The system changes operational parameters of the pumps by switching between bypass mode (lower pressure, higher flow) and product delivery mode (higher pressure, controlled flow). This parameter adjustment allows the same pump to serve multiple functions with different hydraulic demands, optimizing energy efficiency.
2Adaptability or versatility
If manual reconfiguration of hydraulic and electrical interfaces is performed for each product delivery unit, then adaptability to different configurations is improved, but time consumption and error risk increase
Solution Approach 1:
The system performs self-configuration through automated detection of the mounted product delivery unit type and automatic switching of hydraulic and electrical connections. The control system independently manages the reconfiguration process without requiring manual intervention, eliminating time-consuming manual operations while maintaining full adaptability to different unit configurations.
Solution Approach 2:
The control system serves multiple functions by simultaneously detecting product delivery unit type, managing hydraulic flow distribution, and controlling electrical connections. This multi-functional approach consolidates what would otherwise require separate manual operations into a single automated process.
3Adaptability or versatility
If manual reconfiguration of hydraulic and electrical interfaces is performed, then configuration flexibility is improved, but technical skill requirement and error risk increase
Solution Approach 1:
The system replaces manual mechanical connection-making with automated electronic control. The control system electronically switches hydraulic valves and electrical connections based on detected unit type, substituting complex manual mechanical operations with simpler automated electronic control that requires minimal operator skill.
Solution Approach 2:
The system uses feedback from detection of the mounted product delivery unit to automatically adjust hydraulic and electrical configurations. This closed-loop approach ensures correct configuration without requiring operator knowledge or judgment, eliminating errors associated with manual reconfiguration.
4Use of energy by moving object
If hydraulic fluid flow is bypassed through continuously running pumps, then power consumption is reduced, but fluid heating still occurs
Solution Approach 1:
The system converts the potentially harmful effect of bypass flow heating into a beneficial cooling function. By routing bypassed hydraulic fluid through the heat exchanger, the system uses the warm fluid from pump operation to cool other hydraulic circuits, transforming waste heat into a useful cooling resource.
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
Facilitates efficient and error-free switching between various product delivery units by automatically configuring hydraulic and electrical connections, reducing the need for technical expertise and minimizing power consumption and heating issues.
Implementation Method 1
The solenoid operated pump control valve arrangements are configured and interconnected for selectively directing a flow of hydraulic fluid at an operating pressure from one or more of the continuously operating pumps of the applicator to the product delivery unit
Implementation Method 2
The pattern of pins in an electrical interface connector that is unique to a particular hydraulically powered product delivery unit mounted on a self-propelled agricultural product applicator to close or leave open electrical circuits in solenoid operated pump control valve arrangements
Data Source
AI summary
A localized hydraulic circuit configuration detection and loading arrangement, and method, utilize a pattern of pins in an electrical interface connector that is unique to a particular hydraulically powered product delivery unit mounted on a self-propelled agricultural product applicator to close or leave open electrical circuits in solenoid operated pump control valve arrangements for selectively connecting a flow of hydraulic fluid at an operating pressure from one or more continuously operating pumps of the applicator to the product delivery unit, or for selectively bypassing the flow of fluid from one or more of the pumps back to a hydraulic reservoir of the applicator at a low, bypass pressure. When no product delivery unit is mounted on the applicator, the flows from all of the pumps are bypassed to the reservoir at the low, bypass pressure.