Hydraulic Piston Pump Assembly for Load-Adaptive Jack Lifting
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Solution Overview
Problem
Conventional hydraulic jacks require manual operation of hydraulic fluid release valves, which is cumbersome and inefficient, and electric pumps supply hydraulic fluid at a constant rate regardless of load weight, leading to slow lifting speeds when no load is present.
Innovation Solution
Hydraulic fluid release valve assemblies with an electrically powered driving mechanism and two-stage valve pins, and hydraulic piston pump assemblies with multiple pistons of varying displacement volumes and pressure settings, allowing for efficient control of hydraulic fluid flow and lifting speed adaptation to load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation of hydraulic fluid release valve is used, then device complexity is reduced, but ease of operation deteriorates due to cumbersome manual operation especially with high-pressure hydraulic fluid
Solution Approach 1:
The patent replaces the manual mechanical operation system with an automated electrical system. An electric motor drives a reduction gear mechanism that operates the hydraulic fluid release valve automatically, eliminating the need for manual twisting or pressing operations. This substitution significantly improves ease of operation while managing device complexity through standardized electrical components.
Solution Approach 2:
The hydraulic jack system performs the valve operation automatically without requiring external manual intervention. The electrically driven mechanism self-activates to open or close the release valve based on operational requirements, making the system serve itself and improving operational convenience.
2Speed
If electric pump maintains constant fluid supply, then reliability is improved, but speed deteriorates for light or no load conditions
Solution Approach 1:
The patent divides the single pump system into multiple independent piston units with different displacement volumes. Each piston can be selectively activated based on load conditions, allowing the system to segment fluid supply to match actual lifting requirements. This enables faster operation for light loads by using only smaller displacement pistons.
Solution Approach 2:
The patent introduces dynamic adaptability to the pump system by enabling selective activation of different piston units based on real-time load conditions. The system transitions from static constant fluid supply to dynamic variable fluid supply, adjusting pumping capacity to match operational requirements and optimize lifting speed across different load scenarios.
3Productivity
If manual pump is used, then device complexity is reduced, but productivity deteriorates due to repeated manual pressing required
Solution Approach 1:
The patent replaces the manual mechanical pumping system with an automated electrical pumping system. An electric motor drives the pump mechanism, eliminating the need for repeated manual pressing operations. This substitution dramatically improves productivity by automating the fluid injection process while using standardized electrical components to manage device complexity.
Solution Approach 2:
The hydraulic jack system performs the pumping operation automatically without requiring external manual intervention. The electrically driven pump self-activates to inject hydraulic fluid into the cylinder based on operational requirements, making the system serve itself and significantly improving productivity.
4Speed
If lifting speed is set slower for heavy loads, then reliability is improved, but speed deteriorates for light or no load conditions
Solution Approach 1:
The patent segments the pump into multiple piston units with different displacement volumes, allowing selective activation based on load conditions. For light loads, only smaller displacement pistons are activated, providing faster lifting speed. For heavy loads, larger displacement pistons are activated to provide sufficient force while maintaining controlled lifting speed, thus preserving reliability.
Solution Approach 2:
The patent changes the operational parameters of the pump system by varying the displacement volume of active pistons based on load conditions. This parameter adjustment enables the system to optimize lifting speed for each operational scenario while maintaining the reliability needed for heavy loads through appropriate piston selection and controlled fluid supply.
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 easy and efficient operation of hydraulic jacks by automating valve opening and enables variable hydraulic fluid discharge based on load weight, improving lifting speed and efficiency.
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
a pump that drives a hydraulic fluid, such as oil, from a hydraulic fluid reservoir into a hydraulic cylinder containing a ram rod
Implementation Method 3
the hydraulic fluid contained in the hydraulic cylinder is discharged back to the hydraulic fluid reservoir by opening a release valve
Data Source
AI summary
Hydraulic piston pump assemblies are disclosed herein. The hydraulic piston pump 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.