Excavator Hydraulic Actuator Speed Settings for Combined Operations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing excavators face challenges in improving operability during various combined operations, as existing adjustment functions are limited in effectiveness for different combinations of hydraulic actuators.
Innovation Solution
An excavator system with a setting unit that adjusts operation speeds of hydraulic actuators during combined operations, allowing for simultaneous operation of two actuators where the speed increase of one actuator results in a corresponding speed decrease of another, with a control device capable of setting and displaying settings for multiple kinds of combined operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an adjustment function is provided for a certain kind of combined operation, then operability during that combined operation is improved, but operability for other combined operations has room for improvement
Solution Approach 1:
The control device is designed to provide adjustment functions for multiple kinds of combined operations simultaneously, not just a single operation type. The control device stores multiple setting patterns, each corresponding to different combinations of hydraulic actuators, enabling the system to adapt to various operational scenarios without requiring separate specialized systems for each operation type.
Solution Approach 2:
The system allows dynamic switching between different setting patterns based on the selected combined operation. When the operation type changes, the control device automatically applies the appropriate setting pattern, enabling the operability characteristics to be dynamically adjusted to match the current operational context rather than being fixed for a single operation type.
2Speed
If the operation speed of one hydraulic actuator is increased, then the operation speed of another hydraulic actuator must decrease, creating a trade-off that limits overall system performance
Solution Approach 1:
The system provides multiple setting patterns that define different speed distribution characteristics for combined operations. Each pattern represents a different parameter configuration for how speeds are allocated between actuators. By selecting appropriate setting patterns, the system can optimize speed allocation for specific operational requirements without being constrained by a fixed speed trade-off relationship.
Solution Approach 2:
The control device pre-stores multiple setting patterns that have been optimized for different combined operation scenarios. Before actual operation begins, the appropriate setting pattern can be selected and applied, eliminating the need for real-time speed optimization calculations and allowing the system to immediately operate with optimized speed characteristics for the selected operation type.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An excavator or the like, which can further improve the operability of the combined operation, is provided. For this purpose, the excavator according to one embodiment of the present invention 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, and the setting unit is configured to be able to perform the setting for a plurality of kinds of combined operations.