Auto-Actuated Shunt Valve Coupler for Hydraulic Loader Unhitching
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Solution Overview
Problem
The existing systems for coupling and decoupling equipment, such as front loaders, from work vehicles require manual operation, involving multiple steps and physical effort, which is inefficient and cumbersome.
Innovation Solution
An automatically actuated shunt valve system integrated with a multi-coupler that opens or closes a flow path between the lift cylinder's piston sides, allowing for hydraulic fluid to equalize pressure and facilitate the unhitching and hitching of the loader, enabling efficient decoupling and recoupling under hydraulic pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual coupling and decoupling mechanisms are used, then the system can be operated without complex automation, but the operation process becomes cumbersome and time-consuming
Solution Approach 1:
The system automatically actuates the shunt valve based on the coupling state between the power machine and implement. When coupled, the valve closes to direct hydraulic fluid through the implement; when decoupled, the valve opens to redirect fluid away from the implement, eliminating the need for manual valve operation during attachment changes
Solution Approach 2:
The patent replaces manual mechanical operation with an automated detection and actuation system that senses the coupling state and automatically controls the shunt valve, substituting human mechanical actions with an automated control mechanism
2Device complexity
If manual decoupling procedures are followed, then system complexity remains low, but multiple steps and physical effort are required
Solution Approach 1:
The shunt valve system self-regulates based on coupling detection, automatically transitioning between open and closed states without requiring the operator to manually control the valve, thereby simplifying the operational complexity while maintaining system functionality
3Productivity
If automated shunt valve actuation is implemented, then coupling efficiency improves, but system complexity increases
Solution Approach 1:
The patent combines the coupling detection mechanism with the shunt valve actuation system into an integrated unit, where the coupling state detection and valve control functions are merged into a single automated system, improving efficiency without proportionally increasing overall system complexity
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 simplifies the coupling and decoupling process by allowing the loader to be easily disconnected and reconnected, reducing manual effort and improving operational efficiency, enabling seamless transitions between connected and disconnected states.
Implementation Method 1
allowing for hydraulic fluid to equalize pressure and facilitate the unhitching and hitching of the loader
Data Source
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AI summary
An automatically actuated shunt valve system opens and closes a passage between two chambers of a powered element operated by a power source. The shunt valve system includes a coupler connecting the powered element with the power source through two mating coupling elements. One of the coupling elements includes a valve contact and the other includes a shunt valve assembly. The shunt valve assembly includes a valve chamber connected with both chambers of the powered element, a valve element opening or closing a flow path between the conduits, and a shaft for moving the valve element. The shaft engages the valve contact to move the valve element to close the flow path when the coupling elements are mated together, and moves the valve element to open the flow path when the shaft disengages from the valve contact as the coupling elements are disconnected from one another.