Hydraulic Actuator Speed Gain Control for Working Vehicles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hydraulic shovel operation control devices require high energy consumption due to the need to drive all hydraulic pumps with a single electric motor, leading to inefficient energy use and limited adjustability of hydraulic actuator working speeds, which can impact performance in varying work conditions.
Innovation Solution
An operation control device for a working vehicle that includes a hydraulic actuator, an operating oil supply source, an operating oil supply control device, and a working gain setting device, allowing for adjustable working speed characteristics of hydraulic actuators based on operation lever inputs, enabling precise control of operating oil supply to match specific work requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all hydraulic pumps are driven by one electric motor, then the system structure is simple, but energy consumption is excessive
Solution Approach 1:
The patent divides the hydraulic pump system into multiple independent pumps (first hydraulic pump, second hydraulic pump, third hydraulic pump), each driven by its own electric motor. This segmentation allows each motor to operate independently based on actual workload, avoiding the energy waste of a single motor driving all pumps at full capacity regardless of need.
2Device complexity
If the working speed of hydraulic actuators is fixed, then the control system is simple, but adaptability to different work conditions is limited
Solution Approach 1:
The patent introduces a working gain setting device that allows dynamic adjustment of the relationship between operation lever displacement and hydraulic actuator speed. The working gain can be changed based on different work conditions, enabling the system to adapt between fine operation modes (small gain) and high-speed operation modes (large gain), thus achieving versatility without excessive complexity.
Data Source
AI summary
An operation control device for a working vehicle comprises a hydraulic actuator to drive the hydraulic working device, operating oil supply source for driving the hydraulic actuator, an operating oil supply control device that performs control to supply operating oil to the hydraulic actuator, an operating device to be operated to make the hydraulic actuator work and a working gain setting device that sets a gain of working speed of the hydraulic actuator corresponding to the operation of the operating device. The operating oil supply control device controls operating oil supply from the operating oil supply source to the hydraulic actuator based on the operation output signal from the operating device and the working speed gain set by the working gain setting device.