Hydraulic Jack Pump and Valve Control for Variable Load Lifting
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Solution Overview
Problem
Conventional hydraulic jacks require manual operation to open and close hydraulic fluid release valves, which is inefficient and difficult when dealing with high-pressure fluid, especially when lifting heavy loads, as it slows down the lifting speed regardless of the load weight.
Innovation Solution
The development of electrically powered hydraulic fluid release valve assemblies with a two-stage valve pin and a driving assembly that uses an electrically powered driver to apply a pushing force to the valve, allowing for efficient opening and closing of the valve, and hydraulic piston pump assemblies with multiple pistons that adjust fluid pressure and flow rate based on load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to open and close hydraulic fluid release valves, then the device structure remains simple, but the operation efficiency decreases and difficulty increases when dealing with high-pressure fluid
Solution Approach 1:
The patent replaces the manual mechanical operation system with an electrically powered driver system. The electrically powered driver uses electromagnetic force to automatically open and close the hydraulic fluid release valve, eliminating the need for manual twisting or pressing operations. This substitution resolves the contradiction by significantly improving ease of operation while accepting increased device complexity through the addition of electric components.
2Speed
If constant lifting speed is maintained for heavy loads, then lifting stability is improved, but lifting speed becomes too slow for light loads or no load
Solution Approach 1:
The patent implements a dual-piston pump system with different displacement volumes that can dynamically adjust the hydraulic fluid flow rate based on load conditions. When light loads or no load are present, the system operates at higher speed using the larger displacement piston. When heavy loads are present, the system switches to the smaller displacement piston for controlled, slower lifting. This dynamic adaptation resolves the contradiction by allowing the system to optimize lifting speed according to actual load requirements.
Solution Approach 2:
The patent changes the hydraulic system parameters (flow rate and pressure) based on load conditions by using a dual-piston pump with different displacement volumes. The system can switch between different pumping capacities to match the load requirements, thereby resolving the contradiction between maintaining stability for heavy loads and achieving high speed for light loads.
3Extent of automation
If electric pump is used to drive hydraulic fluid injection, then automation is improved, but the lifting speed becomes uniform and too slow for light loads
Solution Approach 1:
The patent enhances the electrically powered system by incorporating a dual-piston pump that can dynamically adjust its output characteristics. The system automatically switches between different piston configurations based on detected load conditions, enabling high-speed operation for light loads while maintaining controlled speed for heavy loads. This dynamic capability resolves the contradiction by allowing the electrically powered system to adapt lifting speed rather than operating at a fixed uniform speed.
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 efficient and automatic operation of hydraulic jacks, allowing for faster lifting of light loads and controlled lifting of heavy loads by adjusting fluid pressure and flow rate, improving overall efficiency and speed.
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. The hydraulic jack assemblies may additionally or alternatively include a hydraulic fluid release valve that may be opened by an electrically powered driver.