Ground Milling Machine Hydraulic Layout for Compact Maintenance Access
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Solution Overview
Problem
Existing self-propelled ground milling machines, such as road cold milling machines, stabilizers, or recyclers, have extensive components that hinder compact design and accessibility for maintenance, making them difficult to transport and maintain efficiently.
Innovation Solution
The hydraulic tank is positioned vertically above the pump transfer gear, reducing the length of hydraulic hoses and allowing for a more compact arrangement, with additional components like air filters and pumps arranged in a V-shape to optimize space, enabling a coherent functional unit for easier assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the hydraulic tank is positioned away from the pump transfer gear, then there is more space for component arrangement, but the length of hydraulic hoses increases and accessibility for maintenance deteriorates
Solution Approach 1:
The hydraulic tank is positioned vertically above the pump transfer gear, utilizing the vertical dimension rather than horizontal spacing. This vertical arrangement reduces the length of hydraulic hoses while maintaining adequate space for component arrangement and improving accessibility for maintenance operations.
2Adaptability or versatility
If extensive components are carried along with the ground milling machine, then all necessary functions are available, but the machine becomes less compact and harder to transport
Solution Approach 1:
Multiple hydraulic pumps and the hydraulic tank are merged into a compact arrangement where the tank is positioned vertically above the pump transfer gear. This integration reduces the overall footprint and length of the machine while maintaining all necessary hydraulic functions for operation.
3Length of moving object
If components are arranged for compact design, then transport regulations are easier to fulfill, but accessibility of operating components for maintenance deteriorates
Solution Approach 1:
The hydraulic system is segmented into distinct functional units - the pump transfer gear and hydraulic tank are positioned as separate but vertically aligned components. This segmentation allows for compact overall arrangement while providing clear access paths to individual components for maintenance operations.
Data Source
AI summary
The invention relates to a self-propelled ground milling machine, in particular a road cold milling machine, stabilizer or recycler, comprising a milling device for milling the ground at a milling depth, a machine frame supported by front and rear travel units, an internal combustion engine arranged in an engine compartment, a hydraulic system with at least two hydraulic pumps, a pump transfer gear and a hydraulic tank, and an operator platform.