Pressure-Actuated Cylinder Control for Variable-Flow Hydraulics
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Solution Overview
Problem
Current axial piston pump designs face mechanical complications, high maintenance costs, operational inefficiencies, and vibration/noise issues due to dynamic torque changes in hydraulic systems, particularly in systems with varying fluid flow requirements.
Innovation Solution
A hydraulic device with a plurality of cylinders and flow control valves, where a fluid pressure sensing device operates the valves to manage hydraulic fluid flow based on pressure thresholds, allowing for dynamic adjustment of fluid flow to match changing torque conditions, thereby reducing maintenance and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If variable angle rotating drive plates (wobble plate) are used to dynamically change fluid flow in response to changing torque conditions, then the hydraulic device can adapt to dynamic flow requirements, but mechanical complications, maintenance costs, and operational inefficiencies increase
Solution Approach 1:
The patent removes the variable angle rotating drive plate (wobble plate) from the axial piston pump design, extracting the source of mechanical complications while maintaining the ability to adapt to dynamic flow requirements through alternative means
Solution Approach 2:
The patent replaces the mechanical variable angle drive plate system with a simpler piston arrangement that achieves dynamic flow adaptation through pressure-actuated flow control, substituting complex mechanical angular adjustment with a more reliable pressure-responsive mechanism
2Adaptability or versatility
If variable angle rotating drive plates are used to dynamically change fluid flow, then flow adaptation is achieved, but maintenance costs and operational efficiency deteriorate
Solution Approach 1:
By removing the variable angle rotating drive plate, the patent eliminates the component that requires frequent maintenance and causes operational inefficiencies, while preserving dynamic flow adaptation capability through the simplified piston design
3Power
If axial piston pump designs are used with dynamic torque changes, then hydraulic power is delivered, but vibration and noise are generated
Solution Approach 1:
The patent uses the fluid pressure that would otherwise contribute to vibration and noise as a beneficial control signal to actuate flow control valves, converting the harmful pressure fluctuations into useful feedback for dynamic flow regulation that reduces vibration and noise
4Productivity
If flow control valves are actuated by fluid pressure to dynamically adjust fluid flow, then operational efficiency is improved, but device complexity increases
Solution Approach 1:
The flow control valves are actuated automatically by fluid pressure from the system itself, eliminating the need for external control systems. The hydraulic fluid's own pressure serves as the actuating force, creating a self-regulating system that improves operational efficiency without requiring complex external control mechanisms
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
The solution enhances operational efficiency, reduces maintenance costs, and minimizes vibration and noise by dynamically adjusting fluid flow in response to changing torque demands, improving the performance of hydraulic systems.
Implementation Method 1
a fluid pressure sensing device coupled between downstream of the first output port and said respective flow control valve, the fluid pressure sensing device for supplying a pressure signal generated from a fluid pressure of the first output port to said respective flow control valve
Implementation Method 2
a respective flow control valve for said each cylinder, said respective flow control valve positioned between at least one of a) the input port and said each cylinder and b) the first output port and said each cylinder, said respective flow control valve for facilitating or inhibiting the flow of the hydraulic fluid
Implementation Method 3
a housing having the plurality of cylinders with a plurality of corresponding pistons; an input port of the housing fluidly connected to each cylinder of the plurality of cylinders
Data Source
AI summary
A variable flow hydraulic device having a plurality of cylinders for varying a flow of hydraulic fluid between a reservoir and a load, the device comprising: a housing having the plurality of cylinders with a plurality of corresponding pistons; an input port of the housing fluidly connected to each cylinder of the plurality of cylinders, the input port facilitating introduction of the hydraulic fluid to said each cylinder; a first output port of the housing connected to said each cylinder, the first output port facilitating the ejection of the hydraulic fluid from said each cylinder, the first output port configured for fluidly coupling said each cylinder to the load; a respective flow control valve for said each cylinder, and a fluid pressure sensing device coupled between downstream of the first output port and said respective flow control valve.