Hydraulic Valve Damping Chamber with Switchable Response Control
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Solution Overview
Problem
Existing damping systems for hydraulic systems fail to provide flexible damping that can be controlled independently of the operating state, leading to unwanted damping during rapid, intentional changes.
Innovation Solution
A damping manipulation device that connects the volume of one side of the damping chamber to another volume, allowing selective modification of the damping system's response time and characteristics through a pressure-controlled or differential pressure-controlled hydraulic valve, which includes a hydraulic resistance and an actively controllable additional hydraulic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If damping is provided in hydraulic systems, then vibrations and disturbances are counteracted, but damping also occurs during rapid intentional changes which should not be damped
Solution Approach 1:
The damping system uses a controllable hydraulic valve to dynamically adjust the damping characteristic. The valve can switch between different damping states based on system conditions, allowing the damping force to be variable rather than fixed. This enables the system to provide damping when needed while allowing rapid intentional changes to proceed without damping resistance.
Solution Approach 2:
The system changes the damping parameter by controlling the opening state of the hydraulic valve. When the valve is closed, full damping is applied to counteract vibrations. When the valve is open, the damping effect is reduced or eliminated to allow rapid intentional changes. This parameter switching resolves the contradiction between providing damping and allowing rapid changes.
2Object-affected harmful factors
If a damping chamber with fixed volumes is used, then damping is provided, but the response time and damping characteristics cannot be selectively modified
Solution Approach 1:
The invention introduces a controllable hydraulic valve that dynamically modifies the damping chamber characteristics. By controlling the valve opening, the system can selectively change the response time and damping characteristics of the damping chamber, transforming it from a fixed to a variable system that adapts to different operating conditions.
Solution Approach 2:
The controllable hydraulic valve acts as an intermediary element between the damping chamber and the hydraulic system. It mediates the flow of hydraulic fluid to/from the damping chamber, thereby controlling the damping effect. This intermediary allows selective modification of damping characteristics without changing the fundamental damping chamber structure.
3Stability of the object's composition
If damping is always active, then system stability is improved, but operational flexibility during rapid changes is reduced
Solution Approach 1:
The damping system operates periodically or intermittently rather than continuously. The controllable valve switches the damping effect on and off based on system needs. During normal operation, damping is active to maintain stability. During rapid intentional changes, the valve opens to disable damping, providing operational flexibility. This periodic activation resolves the contradiction between stability and flexibility.
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 flexible and controlled damping that reduces structural complexity and effectively counters external disturbances while maintaining operational flexibility.
Implementation Method 1
a hydraulic resistance (12) is provided that connects the volume (11) of at least one side (3) of the damping chamber (2) with another volume
Implementation Method 2
these two volumes can be connected to each other via a check valve
Data Source
Figure 1~2
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AI summary
The invention relates to a damping system for hydraulic systems with a hydraulic valve to be damped, which has at least a first port designed as a control port, a second port designed as a port for the high-pressure side and a third port designed as a port for the low-pressure side, as well as a valve spool, and with a damping chamber having at least one side and a displaceable piston, wherein the at least one side has a volume on which the piston acts, and wherein the valve spool of the hydraulic valve is connected to the piston of the damping chamber via a mechanical connection such that a displacement of the valve spool also results in a displacement of the piston.To enable flexible damping of the hydraulic system as required, a damping manipulation device is to be provided which connects the volume of one side of the damping chamber with another volume, whereby during the operation of the hydraulic system the resulting behavior of the damping chamber with respect to the reaction time of the hydraulic valve as well as the damping properties of the hydraulic valve can be specifically changed by means of the damping manipulation device.