Hydraulic Horizontal Control Valve for Skid Steer Loaders
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hydraulic systems for working machines, such as skid steer loaders, face challenges in efficiently controlling the horizontalizing operation of working tools, particularly when the boom is moved upward, leading to increased leakage and operational inefficiencies.
Innovation Solution
A hydraulic system with a horizontal control valve and a controller device that can switch between activating and stopping positions based on permission and non-permission signals, ensuring the horizontalizing operation is stopped when the boom is moved upward, thereby reducing leakage and improving operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the horizontalizing operation is allowed to continue when the boom is moved upward, then the working tool can maintain horizontal position, but fluid leakage increases and operational efficiency decreases
Solution Approach 1:
The control system dynamically adjusts the horizontal control valve based on boom position. When the boom is detected to be moving upward, the controller automatically switches the horizontal control valve from the activating position to the stopping position, adapting the system state to prevent fluid leakage while maintaining operational reliability.
Solution Approach 2:
The controller receives feedback signals from detection means that monitor boom position and operation state. Based on this feedback, the controller determines when to activate or stop the horizontalizing operation, enabling automatic prevention of fluid leakage during upward boom movement while maintaining horizontal position when appropriate.
2Ease of operation
If the horizontal control valve remains in activating position during upward boom movement, then horizontalizing operation continues, but system complexity increases due to unnecessary control actions
Solution Approach 1:
The controller is pre-programmed with the logic to detect upward boom movement and automatically switch the horizontal control valve to the stopping position. This preliminary control action prevents unnecessary horizontalizing operations before they can cause fluid leakage, simplifying the overall system by eliminating the need for manual intervention or complex additional components.
3Loss of energy
If the horizontal control valve is switched to stopping position during upward boom movement, then fluid leakage is reduced, but the working tool may lose horizontal positioning
Solution Approach 1:
The detection means continuously monitor boom position and provide feedback to the controller. The controller uses this feedback to determine the appropriate state for the horizontal control valve, switching to stopping position only when upward movement is detected, and can switch back to activating position when the boom movement stops, thereby maintaining horizontal positioning reliability while reducing fluid leakage.
Data Source
AI summary
A hydraulic system includes: a boom cylinder to move a boom; a working tool cylinder to move a working tool attached to the boom; a boom control valve to control the boom cylinder; a working tool control valve to control the working tool cylinder; a horizontal control valve having: an activating position to allow a horizontalizing operation of the working tool; and a stopping position to stop the horizontalizing operation; and a controller device having: a first information obtaining portion to obtain permission and non-permission to the horizontalizing operation; a second information obtaining portion to obtain at least one of upward operation and upward movement of the boom; and a horizontal controller to set the horizontal control valve to the stopping position when the first information obtaining portion obtains the non-permission and the second information obtaining portion obtains one of the upward operation and the upward movement.