Hydraulic Jack Valve and Pump Control for Variable Load Lifting
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Solution Overview
Problem
Conventional hydraulic jacks require manual operation of hydraulic fluid release valves and electric pumps provide uniform lifting speed regardless of load, leading to inefficient lifting operations.
Innovation Solution
Hydraulic fluid release valve assemblies with electrically powered driving mechanisms and two-stage valve pins, and hydraulic piston pump assemblies with multiple pistons and check valves to adapt fluid flow to load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual operation of hydraulic fluid release valve is used, then device complexity is reduced, but productivity decreases due to manual intervention required
Solution Approach 1:
The patent replaces the manual mechanical operation of the hydraulic fluid release valve with an electrically powered driving mechanism. The electric driver automatically controls the two-stage valve pin to open or close the valve, eliminating the need for manual intervention and improving productivity while maintaining controlled complexity through automated systems
Solution Approach 2:
The electrically powered system enables the hydraulic jack to perform valve control operations autonomously without requiring external manual operation. The system serves itself by automatically managing the hydraulic fluid flow based on operational requirements, thereby increasing efficiency
2Force
If electric pump with constant fluid supply is used, then lifting capability for heavy loads is maintained, but lifting speed becomes too slow for light loads or no load
Solution Approach 1:
The patent introduces dynamic adaptability to the pump system by enabling variable displacement or speed control mechanisms. This allows the pump to adjust its hydraulic fluid supply rate dynamically based on the actual load conditions, providing high force for heavy loads while maintaining high speed for light loads or positioning operations
Solution Approach 2:
The system changes operational parameters (such as pump displacement, motor speed, or valve opening degree) according to load conditions. By varying these parameters, the hydraulic jack optimizes both lifting speed and lifting capability, avoiding the trade-off between constant force and variable speed requirements
3Ease of manufacture
If manual twisting motion is used to operate release valve, then ease of manufacture is improved, but ease of operation deteriorates due to manual power requirement
Solution Approach 1:
The patent replaces the manual mechanical twisting operation with an electrically powered driving mechanism that automatically actuates the valve. This substitution maintains the simplicity of the valve mechanism itself while eliminating the need for manual power input, thereby improving ease of operation without significantly complicating the manufacturing of the valve assembly
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
Facilitates efficient and automated control of hydraulic fluid flow, allowing variable lifting speeds and pressures based on load, enhancing operational efficiency and reliability.
Implementation Method 1
an electrically powered driver connected to the driving assembly, the electrically powered driver, when actuated, causes the driving assembly to move to apply the pushing force to the hydraulic fluid release valve
Implementation Method 2
the hydraulic fluid in the hydraulic cylinder, which may be under high pressure, can flow to the hydraulic fluid tank
Data Source
AI summary
Hydraulic jack assemblies are disclosed herein. The hydraulic jack assemblies may include a hydraulic unit base that includes a plurality of pump pistons to output hydraulic fluids with different characteristics that can be selectively used based on load conditions.