Hydraulic Attachment Control with Saved Constant Lever Input
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Solution Overview
Problem
Existing hydraulic control systems for work machines are complex and inefficient, requiring separate devices to set and maintain constant operation modes for work attachments, which can be cumbersome and not easily adaptable to changing conditions.
Innovation Solution
A hydraulic control system with a controller and operator input device that allows for setting and saving a constant work attachment control value, enabling operators to adjust and maintain the operation of work attachments, such as rotation speed, using a single device, like a lever, which simplifies control and adapts to current requirements without pre-setting constants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate control device is used to set the constant work attachment control value in advance, then the work attachment can be controlled in continuous mode, but the control process becomes complex and less adaptable to changing conditions
Solution Approach 1:
The patent combines the function of setting the constant work attachment control value with the existing operator input device that is already used for proportional control. This merging eliminates the need for a separate control device, simplifying the control process and reducing device complexity while maintaining both proportional and continuous control capabilities
Solution Approach 2:
The operator input device is designed to serve multiple functions: it can control the work attachment in proportional mode based on actuation amount, and also set the constant work attachment control value for continuous mode operation. This multi-functionality reduces the number of separate devices needed and simplifies the overall control system
2Adaptability or versatility
If a predetermined constant work attachment control value is set in advance, then continuous mode operation is enabled, but the system becomes less adaptable to changing operational requirements
Solution Approach 1:
The system allows the constant work attachment control value to be dynamically adjusted by the operator using the operator input device, rather than being fixed in advance. The controller saves the control value at the moment the operation switch is actuated, enabling real-time adaptation to changing operational conditions while maintaining continuous mode operation
Data Source
AI summary
The invention refers to a hydraulic control system for controlling operation of a work attachment of a work machine, comprising a controller configured to output a work attachment control value controlling the operation of the work attachment, an operator input device configured to output a command signal depending on the amount of actuation of the operator input device for setting the work attachment control value, a save input device configured to generate a save command signal upon actuating the save input device and a mode select input device configured to select a first mode and a second mode, wherein the controller is configured to save a constant work attachment control value, wherein the constant work attachment control value is the work attachment control value as set by the command signal upon receiving the save command signal.