Double Acting Hydraulic Jack Auxiliary Pump for Rapid Light-Load Lifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hydraulic jacks currently require excessive time to position and raise heavy items under light-load conditions, and then switch to a slower lifting rate when load weights exceed a certain threshold, inefficiently managing load transitions.
Innovation Solution
A hydraulic jack design featuring a primary pump and an auxiliary pump, where the auxiliary pump operates under light-load conditions to rapidly lift loads and disengages when load weights exceed a defined shift weight, allowing the primary pump to handle heavier loads with increased leverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single pump is used for lifting, then the device structure is simple, but the lifting speed is slow under light-load conditions
Solution Approach 1:
The pump system is segmented into two independent pumps: a primary pump for normal lifting operations and an auxiliary pump for rapid lifting under light-load conditions. This segmentation allows each pump to be optimized for its specific function, with the auxiliary pump providing high-speed lifting when needed and the primary pump handling heavier loads, thereby resolving the contradiction between lifting speed and device complexity.
2Productivity
If an auxiliary pump is added for rapid lifting, then the lifting speed under light-load conditions improves, but the device complexity increases
Solution Approach 1:
The system dynamically switches between the auxiliary pump and primary pump based on load conditions. The auxiliary pump automatically engages when load is below a threshold weight and disengages when the threshold is exceeded, allowing the system to adapt its complexity to the actual operational needs. This dynamic configuration maximizes lifting efficiency during light-load operations while preventing unnecessary complexity during heavy-load operations.
Solution Approach 2:
The auxiliary pump system is designed to automatically detect load conditions and self-regulate its operation without external control. The pump automatically activates during light-load conditions and deactivates when the load exceeds the threshold, eliminating the need for complex control systems and manual intervention, thereby improving productivity while minimizing the increase in device complexity.
3Speed
If the auxiliary pump operates continuously, then rapid lifting is maintained, but energy consumption increases under heavy-load conditions
Solution Approach 1:
The system incorporates feedback mechanisms that continuously monitor load weight and automatically adjust pump operation accordingly. When the load exceeds the threshold weight, the feedback system automatically deactivates the auxiliary pump and switches to the primary pump, preventing excessive energy consumption under heavy-load conditions while maintaining rapid lifting speed under light-load conditions, thereby resolving the contradiction between lifting speed and energy consumption.
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 rapid lifting under light-load conditions and efficient load management by automatically shifting to a normal lifting rate and torque when load weights exceed the shift weight, significantly reducing overall lifting time.
Implementation Method 1
The auxiliary hydraulic pump causes the hydraulic fluid to be pumped to the lift cylinder at load weights of less than a load-condition shift weight for the hydraulic jack
Implementation Method 2
a primary hydraulic pump in fluidic communication with the hydraulic fluid reservoir and in fluidic communication with the lift cylinder
Data Source
AI summary
A double action hydraulic jack has a primary hydraulic pump in fluidic communication with the hydraulic fluid reservoir and with the lift cylinder. The hydraulic jack has an auxiliary hydraulic pump also in fluidic communication with the hydraulic fluid reservoir and the lift cylinder. The auxiliary hydraulic pump operates at light-load conditions to drive the jack ram upwards at a rate at least three times faster than at heavy lift-load conditions with only the primary hydraulic pump in operation.