Hydraulic Shock Absorber With Plate-Valve Ducts for Bidirectional Damping
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Solution Overview
Problem
Existing choke-check valve dampers require two separate pieces in parallel to achieve different damping in each direction, and their adjustable chokers often fail to accurately respond to vibrations in fluid lines, leading to inconsistent performance.
Innovation Solution
A shock absorber with ducts that allow fluid flow through a stopper, where plates with varying diameters bend to open or close the ducts based on pressure differences, enabling adjustable damping in both directions and improved vibration control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate choke-check valve dampers are used in parallel to achieve different damping in each direction, then directional damping control is improved, but device complexity increases
Solution Approach 1:
The patent combines two separate dampers into a single integrated shock absorber unit. The piston assembly includes multiple pistons (first piston, second piston) within a single cylinder, allowing different damping characteristics in opposite directions while maintaining a unified structure. This merging eliminates the need for parallel installation of separate dampers.
Solution Approach 2:
The single shock absorber performs multiple functions that previously required separate components. It provides differential damping in both directions, vibration suppression, and flow control within one device. The bidirectional valve and multiple flow restricting passages enable the same component to handle different flow conditions in opposite directions.
2Adaptability or versatility
If adjustable chokers are used in dampers, then damping adjustment capability is improved, but response to vibrations becomes unreliable and adjustment accuracy deteriorates
Solution Approach 1:
The patent replaces the mechanical adjustable choker system with a valve-based flow control mechanism. The bidirectional valve with flow restricting passages provides more reliable vibration response compared to flexible chokers. The valve structure offers better stability and accuracy in maintaining set values while still allowing adjustment of damping characteristics.
Solution Approach 2:
The invention changes the control parameter mechanism from physical choker adjustment to valve opening control. By using valves with adjustable flow restricting passages, the system achieves more precise and stable damping control. The parameter adjustment is performed through valve positioning rather than changing the physical geometry of chokers, improving reliability.
3Object-affected harmful factors
If a movable piston with restricted hydraulic fluid flow is used to damp movement, then vibration damping is improved, but device complexity and adjustment difficulty increase
Solution Approach 1:
The shock absorber is divided into distinct functional segments: first piston with first flow restricting passage, second piston with second flow restricting passage, and bidirectional valve. This segmentation allows independent optimization of each component's damping characteristics while maintaining overall system simplicity. Each piston can be adjusted separately for different damping requirements.
Solution Approach 2:
The system incorporates dynamic elements including the bidirectional valve that responds to pressure differences, and adjustable flow restricting passages that can be modified based on operating conditions. This dynamic capability allows the damper to adapt to varying vibration conditions while maintaining a relatively simple base structure.
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
This solution allows for effective damping of hydraulic fluid in both flow directions with adjustable properties, enhancing control pressure management and vibration suppression for control valves, with the absorber being easily integrated into valve stems or pipework.
Implementation Method 1
the bending of the mentioned plate due to the pressure of the flow coming along the mentioned duct opens access for the flow through the mentioned stopper
Implementation Method 2
the bending of the mentioned plate due to the pressure of the flow
Implementation Method 3
shock absorber for hydraulic system... damping of vibration... The absorber damps the vibration occuring in the control flow
Data Source
Figure 1~3
AI summary
Shock absorber (5), (8-10), (12-14) used for damping a control flow which is to be directed to the control valve belonging to a hydraulic system or is to be directed to the adjustable valve of the flow through which absorber the flow of the hydraulic fluid can be directed at least in one direction. The absorber is a stopper (5) which restricts the run of the flow to be damped which stopper is equipped with one or several ducts (6, 7) which let the flow go through the mentioned stopper (5) when the other orifice of the mentioned duct is blocked with a plate (8), (12) in such a way that bending of the mentioned plate opens access for the flow through the mentioned stopper (5) due to the pressure of the flow coming along the mentioned duct (6, 7).