Excavator Regeneration Oil Path Control for Faster Bucket Rod Response
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Solution Overview
Problem
Current excavator hydraulic systems face complexity and low adjustability in regeneration control, leading to slow responsiveness due to integrated regeneration and regeneration cut-off valves, which affect the operating efficiency of the bucket rod.
Innovation Solution
A regeneration control hydraulic system with separate regeneration and regeneration cut-off oil paths, each equipped with dedicated valves, allowing for independent control and improved responsiveness, and the use of logic valves to manage oil flow and pressure effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If integrated regeneration and regeneration cut-off valves are used, then device complexity is reduced, but responsiveness deteriorates
Solution Approach 1:
The patent divides the integrated valve into two separate valves: a regeneration valve and a regeneration cut-off valve. This segmentation allows each valve to be controlled independently, enabling faster and more precise control responses. The regeneration valve controls oil flow to the regeneration chamber, while the regeneration cut-off valve separately controls the cut-off of regeneration, eliminating the responsiveness delays caused by integrated valve mechanisms.
2Speed
If separate regeneration and regeneration cut-off oil paths are used, then responsiveness is improved, but device complexity increases
Solution Approach 1:
The hydraulic system is divided into distinct oil paths: a regeneration oil path and a regeneration cut-off oil path. Each path is equipped with its own dedicated valve and control mechanism. While this increases the number of components, it enables independent control of regeneration and cut-off processes, significantly improving responsiveness and allowing for more flexible operational control.
3Adaptability or versatility
If dedicated valves for regeneration control are used, then adjustability is improved, but device complexity increases
Solution Approach 1:
The patent implements dedicated regeneration valves and regeneration cut-off valves that can be independently adjusted and controlled. This segmentation provides fine-tuned adjustability for different operational conditions, allowing operators to optimize system performance for various work requirements. Each valve can be independently calibrated and controlled, offering superior adaptability compared to integrated valve systems.
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
Simplifies regeneration control, enhances responsiveness, and reduces pressure loss, improving the maneuverability and reliability of the excavator's working device by allowing for adjustable oil flow and separate management of regeneration and cut-off processes.
Implementation Method 1
at least one hydraulic pump configured to spray a working oil; an actuator configured to work by a supply of the working oil from the at least one hydraulic pump
Implementation Method 2
a regeneration oil path configured to send a return oil as a regeneration oil to a cavity having a negative pressure of the actuator
Data Source
AI summary
A regeneration control hydraulic system for an excavator, including at least one hydraulic pump, an actuator, a regeneration oil path, and a regeneration cut-off oil path. The regeneration oil path is configured to send a return oil as a regeneration oil to a cavity having a negative pressure of the actuator. The regeneration oil path is provided with a regeneration valve and a first control valve. The first control valve is configured to control the regeneration oil to enter the cavity having the negative pressure of the actuator when a working device of the excavator retracts inwards, or to control the oil to be discharged from the actuator to the regeneration cut-off oil path when the working device swings outwards. The regeneration cut-off oil path is configured to send the regeneration oil passing through the regeneration valve or the oil discharged from the actuator to other destinations.