Hydraulic Jack Oil-Circuit Layout for Bidirectional Lifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hydraulic jacks in the related art have limitations in lifting stroke directionality and structural support, leading to inefficient lifting and support capabilities.
Innovation Solution
A hydraulic oil-circuit system with a double-acting hydraulic cylinder and unidirectional oil flow paths, allowing hydraulic oil to be delivered to or sucked from oil chambers based on piston motion, and an oil unloading pipeline to return oil to a storage chamber, enhancing lifting efficiency and support flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single piston is pressed downward to lift weights, then the lifting function is achieved, but the lifting stroke is limited and there is no lifting stroke when the piston is pulled upward
Solution Approach 1:
The hydraulic system is designed as a double-acting hydraulic cylinder where both the upward and downward movements of the piston are utilized for lifting operations. The piston can receive hydraulic pressure from either direction, transforming the static single-direction lifting mechanism into a dynamic bidirectional system that eliminates idle strokes and maximizes operational efficiency.
2Adaptability or versatility
If support blocks are fixed in position, then the structure is simple, but the jack cannot support weights when they are too far away or most lifting stroke is wasted
Solution Approach 1:
The support blocks are designed to be movable rather than fixed, allowing them to adjust their positions along the hydraulic cylinder. This dynamic positioning capability enables the support blocks to adapt to different weight positions, eliminating the limitation of fixed support blocks and reducing wasted lifting stroke while maintaining structural simplicity.
3Productivity
If hydraulic oil is delivered unidirectionally to one chamber only, then the circuit system is simple, but the piston cannot reciprocate efficiently
Solution Approach 1:
The hydraulic oil-circuit system is designed with bidirectional oil delivery capability where the same circuit components can deliver hydraulic pressure to either the first or second hydraulic oil chamber depending on the operational requirement. This multi-functional circuit design enables efficient piston reciprocation without significantly increasing system complexity, as the same valves and passages serve multiple functions.
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 lifting and support operations regardless of piston direction, optimizing hydraulic jack efficiency and reducing idle strokes, with overload protection to prevent damage.
Implementation Method 1
reciprocating motion of the piston changes volumes of the first hydraulic oil chamber and the second hydraulic oil chamber, and one of the first oil port and the second oil port delivers hydraulic oil to the oil loading chamber, while the other of the first oil port and the second oil port sucks oil from the storage oil chamber
Implementation Method 2
Hydraulic jacks of the related art, telescopic rods are driven to reciprocate through mutual transfer of liquid oil in two areas of the jacks
Data Source
AI summary
A hydraulic oil-circuit system and a hydraulic jack are proposed. The hydraulic oil-circuit system includes a hydraulic cylinder, an oil loading chamber, a storage oil chamber and an oil unloading pipeline; a piston is arranged in the hydraulic cylinder and divides the hydraulic cylinder into a first hydraulic oil chamber and a second hydraulic oil chamber; the first hydraulic oil chamber has a first oil port, and the second hydraulic oil chamber has a second oil port; the first oil port and the second oil port are both in unidirectional communication with the oil loading chamber and are both in unidirectional communication with the storage oil chamber; and the oil unloading pipeline connects the oil loading chamber and the storage oil chamber.