Tractor Hydraulic Outlet Insert for Quick Coupler Leak Reduction
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Solution Overview
Problem
Existing hydraulic outlets on tractors frequently leak hydraulic oil, leading to soil contamination and the need for frequent servicing or rebuilding, which is costly and environmentally harmful.
Innovation Solution
An adjustable semi-permanent hydraulic outlet insert with a screw-in commercial off-the-shelf female quick connect coupler is used, featuring a selective control valve with a first and second coupler orifice, and a mechanism to adjust the O-rings' diameter, reducing leakage and the need for repairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standardized quick connect couplers are used in hydraulic outlets, then ease of operation is improved, but reliability deteriorates due to frequent leakage and servicing needs
Solution Approach 1:
The hydraulic outlet system is divided into two main segments: a permanent body portion and a replaceable insert assembly. The insert assembly contains the quick connect coupler and sealing components, allowing it to be removed and replaced independently when worn or leaking, while the permanent body remains in place. This segmentation enables easy replacement of the problematic sealing components without replacing the entire hydraulic outlet system.
Solution Approach 2:
The insert assembly incorporates adjustable sealing mechanisms with O-rings that can be positioned at different locations within the coupler orifice. The system allows for dynamic adjustment of sealing positions and the ability to quickly swap inserts when leakage occurs, providing adaptability to maintain reliability while preserving ease of operation.
2Reliability
If frequent servicing of hydraulic outlets is performed, then reliability is improved, but loss of time and increase in cost occur
Solution Approach 1:
The insert assembly is designed as a pre-assembled unit containing all necessary sealing components (O-rings, coupler, retaining clips) that can be installed beforehand. When leakage is detected, the entire insert can be quickly removed and replaced with a new pre-assembled unit, eliminating the need for time-consuming disassembly and reassembly of individual components during servicing.
Solution Approach 2:
The insert assembly is designed as a disposable or limited-life component that can be quickly replaced rather than repaired. When the insert shows signs of wear or leakage, it is removed and replaced with a new insert, while the permanent body is retained for continued use. This approach reduces servicing time and costs compared to rebuilding the entire hydraulic outlet system.
3Ease of manufacture
If traditional hydraulic outlets are used, then manufacturing simplicity is maintained, but environmental harm increases due to hydraulic oil contamination
Solution Approach 1:
The sealing and coupler functions are extracted from the permanent hydraulic outlet body and placed into a separate, removable insert assembly. This allows the permanent body to remain simple and easy to manufacture, while the insert assembly contains all components that come into contact with hydraulic oil and may require replacement due to wear or leakage, thereby preventing environmental contamination.
Solution Approach 2:
When the insert assembly becomes worn or leaks, it is removed and discarded (or sent for refurbishment), while the permanent body is retained and recovered for continued use. This approach minimizes waste of the permanently installed components and reduces environmental impact by enabling targeted replacement of only the contaminated or worn sealing components.
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 significantly reduces hydraulic oil leakage, decreases the frequency of repairs, and lowers the cost of replacing wear parts, thereby minimizing soil contamination and maintenance costs.
Implementation Method 1
by rotatably engaging one of said back portion and said back flat face portion, tighten said interior section toward said minimum diameter portion at said opposing face, thereby causing an increase in an outside diameter of said front O-ring disposed between said opposing face and said interior section
Data Source
AI summary
A method and system for reducing leakage of hydraulic oil from a hydraulic outlet on a tractor, which involves removal of the female quick connect coupler from a legacy original equipment selective control valve and inserting into the void the following: a three part insert with a front stepped diameter segment, a back section, which is screwed into front stepped diameter segment, a sleeve which is configured to be inserted after a front O-ring is adjusted and a leading portion of a retention bolt.