Integrated Hydraulic Unit Layout for Extruder Maintenance Access
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Solution Overview
Problem
Conventional hydraulic extruder designs face difficulties in maintenance access due to complex piping and elevated component arrangements, leading to increased design effort and space requirements, especially for different performance classes.
Innovation Solution
A compact hydraulic unit design where the tank and hydraulic machine are fluidically and load-bearing connected, forming a structural unit with a self-supporting carrier, allowing adjacent arrangement and reducing pressure medium flow paths, thus enhancing accessibility and reducing space and installation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pump unit is arranged on the same level as the press cylinder, up to 40m away, then the hydraulic unit can be separated from the press cylinder, but this leads to long pressure medium lines with complex piping and increased fire load
Solution Approach 1:
The patent merges the tank and hydraulic machine into a single integrated hydraulic unit that is load-bearing connected to the press cylinder. This combination eliminates the need for separate pump units arranged at a distance, thereby reducing piping complexity and fire load while maintaining arrangement flexibility through the unified design.
2Adaptability or versatility
If the tank and control blocks are arranged above the press cylinder on a platform, then the hydraulic components are centralized, but this makes access to the press cylinder more difficult due to the supporting structure
Solution Approach 1:
The patent segments the hydraulic unit into a modular design where the tank and hydraulic machine are integrated but can be accessed independently. The load-bearing connection allows the hydraulic unit to be positioned without creating obstructive supporting structures, improving maintenance access while maintaining integration benefits.
3Adaptability or versatility
If the pump unit is distantly arranged, then the hydraulic components can be separated, but this increases the pressure medium volume and makes precise control difficult
Solution Approach 1:
The patent combines the tank and hydraulic machine into a closely integrated unit with load-bearing connection to the press cylinder. This merging reduces the pressure medium volume in lines and improves control precision while maintaining the versatility of the hydraulic system through its modular yet integrated design.
4Adaptability or versatility
If the hydraulic unit is arranged with individual concepts for different performance classes, then each extruder type can be optimized, but this increases the design effort
Solution Approach 1:
The patent creates a universal hydraulic unit design with load-bearing connection that can be applied across different performance classes of extruders. The integrated tank and hydraulic machine configuration provides a standardized solution that reduces design effort while maintaining optimization for various performance requirements through scalable implementation.
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 design facilitates easier maintenance, reduces space requirements, and lowers design effort by enabling a modular, scalable, and cost-effective solution for various performance classes of extruders with improved energy efficiency and control precision.
Implementation Method 1
The suction section or tunnel enables a combination of optimized arrangement of the at least one hydraulic machine, short pressure medium flow path and optimal suction flow in the tank
Data Source
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AI summary
A hydraulic power unit for supplying pressure medium to a hydraulic actuator of an extrusion press is disclosed, comprising at least one tank for storing pressure medium and at least one hydraulic machine fluidically connected to this tank for supplying pressure medium to the actuator. A series of such power units and an extrusion press incorporating the power unit are also disclosed.