Hydraulic Circuit Segmentation for Dynamic Adjustment
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Solution Overview
Problem
Existing hydraulic circuits are over-dimensioned for short-term adjustment movements with high dynamics, leading to inefficient energy expenditure due to complex implementations with additional cylinder surfaces and spring mechanisms, which are infrequently used.
Innovation Solution
A hydraulic circuit design where the hydraulic machine is dimensioned only for control and regulation tasks, with an additional hydraulic machine providing high dynamics or emergency adjustments, decoupled from the main circuit when not in use to conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the hydraulic machine is dimensioned for short-term adjustment movements with high dynamics, then rapid adjustment capability is improved, but energy consumption increases and the machine is over-dimensioned for infrequent use
Solution Approach 1:
The hydraulic system is segmented into two independent hydraulic machines: a first hydraulic machine for control and regulation tasks, and a second hydraulic machine for rapid adjustment and emergency functions. This segmentation allows each machine to be optimally dimensioned for its specific function, avoiding the energy waste of over-dimensioning the primary control machine for infrequent high-speed operations
Solution Approach 2:
The system dynamically switches between the first hydraulic machine for normal operations and the second hydraulic machine for rapid adjustments or emergencies. The second machine can be quickly activated when high-speed adjustment is needed, providing dynamic response capability without requiring the primary machine to be permanently over-dimensioned
2Reliability
If additional cylinder surfaces and spring mechanisms are added for emergency adjustment, then emergency adjustment capability is improved, but device complexity increases
Solution Approach 1:
Instead of adding complex mechanisms to the existing hydraulic cylinder, the invention segments the hydraulic system into two separate machines. The second hydraulic machine provides dedicated emergency adjustment capability through a separate, simpler hydraulic circuit, avoiding the need for complex additional cylinder surfaces and spring mechanisms
Solution Approach 2:
The emergency adjustment function is extracted from the main hydraulic machine and implemented by a separate second hydraulic machine. This extraction simplifies the design by removing the need for complex emergency mechanisms within the primary cylinder, as the emergency function is handled by a dedicated secondary system
3Speed
If the additional hydraulic machine remains connected to the hydraulic circuit when not driven, then rapid response is maintained, but energy is wasted as pressure medium circulates through the stationary machine
Solution Approach 1:
The second hydraulic machine is pre-positioned and connected to the hydraulic circuit, ready for immediate activation. Pressure medium is supplied to its low-pressure side through a make-up valve arrangement, so when activation is needed, the machine can respond immediately without delay for priming or filling, while only consuming energy when actually driven
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 efficient energy use by allowing the hydraulic consumer to be brought into a safe position during emergencies and supports rapid adjustments without over-dimensioning the hydraulic machine, thus optimizing energy consumption.
Implementation Method 1
a first flow path and a second flow path for supplying pressure medium to the hydraulic consumer
Implementation Method 2
a make-up valve arrangement for supplying pressure medium to a low-pressure side of the hydraulic machine
Implementation Method 3
a pressure relief valve arrangement for limiting a pressure in the closed hydraulic circuit to a predetermined value
Data Source
Figure 1
Figure 2
AI summary
A hydraulic circuit for moving and positioning a hydraulic consumer (6) is disclosed, comprising a first flow path (2) and a second flow path (4) for supplying the hydraulic consumer (6) with hydraulic fluid. The hydraulic circuit further includes a hydraulic machine (8) with which, together with the first flow path (2), the hydraulic consumer (6), and the second flow path (4), a closed hydraulic circuit can be formed, a drive (10) for driving the hydraulic machine (8), a feed valve arrangement (12, 14) for supplying hydraulic fluid to a low-pressure side of the hydraulic machine (8), a pressure relief valve arrangement (16, 18) for limiting the pressure in the closed hydraulic circuit to a predetermined value, and a hydraulic fluid reservoir (20) for supplying hydraulic fluid to the low-pressure side of the hydraulic machine (8).Fluidically parallel to the hydraulic machine (8) an additional hydraulic machine (26) is provided for supplying the hydraulic consumer (6) with pressure medium, which can be driven by means of an associated drive (28).