Hydraulic Motor Variable Capacity Control via Load-Adaptive Actuation
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Solution Overview
Problem
Current hydraulic motor systems with variable cubic capacity require manual operator intervention for adjusting cubic capacity based on load size, leading to suboptimal performance due to imprecise load assessment.
Innovation Solution
An automated device that adjusts the cubic capacity of hydraulic motors using a piloting conduit system with bistable valves and non-return valves, allowing fluid flow to control the actuator for increasing or decreasing cubic capacity based on load conditions, enabling automatic adjustment without operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual operator adjustment is used for cubic capacity, then the device complexity is reduced, but the measurement precision of load assessment deteriorates
Solution Approach 1:
The system uses the motor's own operating parameters (rotation speed, torque, supply pressure) to automatically control cubic capacity adjustment. The control unit continuously monitors these parameters and autonomously adjusts the actuator position without external operator intervention, making the system self-regulating based on actual load conditions.
Solution Approach 2:
The control unit receives continuous feedback from sensors monitoring the motor's rotation speed, torque, and supply pressure. This feedback loop enables the system to detect load changes and automatically adjust the cubic capacity to maintain optimal performance, replacing manual operator judgment with automated closed-loop control.
2Measurement precision
If automated adjustment is implemented, then the measurement precision of load assessment is improved, but the device complexity increases
Solution Approach 1:
The control unit performs multiple functions: it monitors rotation speed, torque, and supply pressure; determines load conditions; controls the actuator position; and manages the cubic capacity adjustment. This multi-functional approach consolidates complexity into a single intelligent control unit rather than requiring separate systems for each function.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated control system that uses electronic sensors and a control unit to monitor motor parameters and adjust cubic capacity. This substitution of mechanical operator intervention with electronic control and automation improves precision while managing complexity through integrated control architecture.
3Force
If cubic capacity is increased for high load, then the force output is improved, but the speed of operation deteriorates
Solution Approach 1:
The system dynamically adjusts the motor's cubic capacity in real-time based on actual load conditions. The control unit continuously monitors operating parameters and modifies the actuator position to optimize the balance between torque and rotation speed, allowing the motor to adapt its characteristics to match varying operational requirements rather than operating at fixed capacity.
Solution Approach 2:
The patent changes the motor's cubic capacity parameter automatically in response to detected load conditions. By adjusting the actuator position, the system modifies the motor's displacement parameter to optimize performance, enabling continuous variation of torque and speed characteristics to match the actual load being moved.
4Speed
If cubic capacity is reduced for low load, then the speed of operation is improved, but the force output deteriorates
Solution Approach 1:
The system dynamically adjusts the motor's cubic capacity in real-time based on actual load conditions. The control unit continuously monitors operating parameters and modifies the actuator position to optimize the balance between torque and rotation speed, allowing the motor to adapt its characteristics to match varying operational requirements rather than operating at fixed capacity.
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
Enables precise and continuous adjustment of cubic capacity, optimizing motor performance by automatically matching torque and rotation speed to load conditions, ensuring efficient operation across varying loads without manual intervention.
Implementation Method 1
An increase conduit (31) for increasing the cubic capacity of the motor (M) is connected to the actuator (3) for supplying operating fluid to a side of the actuator which produces an increase of the cubic capacity of the motor (M)
Implementation Method 2
a first conduit (1), for supplying and discharging an operating fluid to a first side of the motor (M)
Data Source
AI summary
A device for supplying and modifying the cylinder cubic capacity of a hydraulic motor, comprising: a first conduit (1) for supplying and discharging an operating fluid to a first side of the hydraulic motor (M); a second conduit (2) for supplying and discharging an operating fluid to a second side of the motor (M); an actuator (3) provided to modify the cubic capacity of the motor (M); an increase conduit (31) for increasing the cubic capacity of the motor (M), connected to the actuator (3) for supplying operating fluid to a side of the actuator (3) which produces an increase of the cubic capacity of the motor (M); a reduction conduit (32) for reducing the cubic capacity of the motor (M), connected to the actuator (3) for supplying operating fluid to a side of the actuator (3), which produces a reduction of the cubic capacity of the motor (M). The device is structured to supply to the increase conduit (31) and to the reduction conduit (32) a proportional pressure to the load acting on the winch.