Hydraulic Pressure Distributor for Load-Dependent Vibration Damping
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Solution Overview
Problem
Existing hydraulic drive devices for cable winches face challenges in controlling energy consumption and vibration during load lowering, particularly when handling varying loads, which can lead to uncontrolled lowering and energy inefficiency.
Innovation Solution
The integration of a third throttle device and a second valve, forming a pressure distributor with an adjustable pressure distribution ratio, allows for adaptive vibration damping based on load conditions, reducing energy consumption by deactivating the third throttle device during low loads and increasing damping during high loads without excessive pressure rise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the third throttle device is activated to reduce energy consumption during low loads, then energy efficiency improves, but vibration damping capability deteriorates
Solution Approach 1:
The system dynamically adjusts the configuration of the pressure distributor by activating or deactivating the third throttle device based on load conditions. During low loads, the third throttle device is activated to reduce energy consumption. During high loads, it is deactivated to provide adequate vibration damping, thus adapting the system behavior to current operating conditions.
Solution Approach 2:
The system changes the flow resistance parameters of the pressure distributor by selectively activating the third throttle device. This alters the pressure distribution ratio to optimize energy consumption during low loads while maintaining vibration damping capability through the second throttle device alone when needed.
2Object-affected harmful factors
If the third throttle device is deactivated to increase vibration damping during high loads, then vibration control improves, but energy consumption increases
Solution Approach 1:
The system dynamically switches between different throttle configurations based on load detection. When high loads are detected requiring increased vibration damping, the third throttle device is deactivated while the second throttle device provides the necessary damping action, preventing excessive energy consumption during low-load operations.
Solution Approach 2:
The pressure distribution ratio is adjusted by changing the active throttle configuration. During high loads, the system transitions to using only the second throttle device, increasing flow resistance to enhance vibration damping while accepting higher energy consumption only when necessary.
3Object-affected harmful factors
If the pressure in the first fluid line is increased to improve vibration damping, then damping action increases, but energy consumption increases
Solution Approach 1:
Instead of uniformly increasing pressure throughout the system, the invention applies localized flow resistance through the third throttle device in the pressure distributor. This creates targeted pressure adjustment at specific points in the hydraulic circuit, providing vibration damping where needed without unnecessarily increasing system-wide pressure 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
This solution ensures a steady, vibration-free lowering of loads across varying weights while minimizing energy consumption, preventing uncontrolled load descent and system vibrations.
Implementation Method 1
the control point is connected to the first fluid line via a third throttle device and a second valve. The first, the second and the third throttle device form a pressure distributor
Implementation Method 2
the pressure distribution ratio of this pressure distributor is adjustable by means of the second valve. This pressure is in turn dependent on the load on the hydraulic machine
Implementation Method 3
The second valve is preferably adjustable in a manner dependent on the pressure in the second fluid line. This pressure is in turn dependent on the load on the hydraulic machine
Implementation Method 4
In the case of low pressure in the second fluid line, the second and the third throttle device jointly preferably bring about a low degree of vibration damping
Implementation Method 5
the necessary high damping action is produced without the pressure in the first fluid line rising excessively in the case of small loads
Data Source
AI summary
A hydraulic drive device includes a pump, a hydraulic machine, and a tank. The hydraulic machine is connected fluidically to first and second fluid lines, which are configured to be connected fluidically to the tank or the pump via an adjustable main valve. The device further includes a first valve with a continuously adjustable first orifice. Pressure fluid is configured to be conducted out of the second fluid line via the first orifice and into the tank. The first valve is acted upon in the closing direction of the first orifice by a first spring and acted upon in the opposite direction by the pressure at a control point. The control point is connected fluidically to the tank via a first throttle device, connected via a second throttle device to the first fluid line, and connected to the first fluid line via a third throttle device and a second valve.