Excavator Hydraulic Speed Coordination for Combined Operations
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Solution Overview
Problem
Existing excavators face challenges in improving operability during combined operations, as existing adjustment functions enhance operability for certain combined operations but not others.
Innovation Solution
An excavator system with a setting unit that adjusts operation speeds of hydraulic actuators during combined operations, where the increase in speed of one actuator results in a decrease in speed of another, and an information processing device for setting and displaying these settings for various combined operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operation speed of one hydraulic actuator is increased during combined operation, then the productivity is improved, but the operation speed of another hydraulic actuator must decrease
Solution Approach 1:
The system dynamically adjusts the operation speeds of multiple hydraulic actuators based on detected combined operations. The control device automatically modifies speed parameters in real-time during combined operations, allowing optimal speed distribution without manual intervention. This dynamic adaptation resolves the contradiction by automatically optimizing productivity while maintaining ease of operation through automated speed coordination.
Solution Approach 2:
The control device changes operational parameters (speeds) of hydraulic actuators based on the detected combined operation type. By automatically adjusting speed parameters according to pre-stored settings for different combined operations, the system improves productivity for specific operation combinations while maintaining overall operability through parameter optimization.
2Productivity
If the operation speed of a first hydraulic actuator is increased, then the productivity is improved, but the operation speed of a second hydraulic actuator decreases
Solution Approach 1:
The system dynamically coordinates the speeds of multiple hydraulic actuators during combined operations. When a combined operation is detected, the control device automatically adjusts the speed of the first actuator upward while coordinating the speed of the second actuator according to pre-stored optimal settings, achieving dynamic speed optimization that improves overall productivity without manual intervention.
Solution Approach 2:
The detection device provides feedback about the actual combined operation being performed, which the control device uses to automatically select and apply appropriate speed settings from pre-stored data. This feedback mechanism ensures that speed adjustments are based on actual operational conditions, optimizing the speed distribution between first and second actuators for each specific combined operation type.
3Ease of operation
If existing adjustment functions are used for certain combined operations, then the operability is improved for those operations, but operability for other combined operations remains unchanged
Solution Approach 1:
The control device is designed with multi-functionality to handle multiple types of combined operations. By storing operation speed settings for various combined operation types and automatically selecting the appropriate settings based on detected operations, the system provides improved operability across multiple operation combinations rather than being limited to a single specific combined operation.
Solution Approach 2:
The system changes operational parameters based on the type of combined operation detected. Different parameter sets (speed settings) are stored for different combined operation types, and the control device automatically applies the appropriate parameters for each operation type, thereby improving adaptability and versatility across multiple combined operations rather than optimizing for just one.
Data Source
AI summary
An excavator includes a plurality of hydraulic actuators, and a setting unit that performs a setting related to operation speeds of the plurality of hydraulic actuators during a combined operation of the hydraulic actuators, so that when the operation speed of one of the actuators increases, the operation speed of another one of the actuators decreases. The setting unit is capable of performing the setting for a plurality of kinds of combined operations.