Driver Station Decoupling for Mining Cutter Vibration Isolation
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Solution Overview
Problem
Self-propelled cutting or milling machines, particularly those used in surface mining, experience severe shaking movements and vibrations when operating with hard materials like granite or limestone, which are transmitted to the driver's station, compromising comfort and safety.
Innovation Solution
The driver's station is decoupled from the chassis by being fixed on a height-adjusting arrangement that allows movement, using hydraulic or pneumatic piston-and-cylinder systems to dampen vibrations, and is optionally rotatable and adjustable in height to maintain a stable position relative to the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the driver's station is fixed on the chassis, then the structure is simple and stable, but severe shaking movements and vibrations are transmitted to the driver's station
Solution Approach 1:
The patent introduces an intermediary mounting structure between the chassis and the driver's station. This intermediate structure includes vibration-damping elements that decouple the driver's station from the chassis vibrations, allowing the driver's station to remain relatively isolated from harmful vibrations while maintaining structural connection.
Solution Approach 2:
The patent converts the harmful vibrations and shaking movements into a beneficial effect by using vibration-damping mounts that absorb and dissipate the vibrational energy. The mounting structure is designed to exploit the vibrational forces to some extent while isolating the driver's station, turning the harmful vibration transmission into a controlled energy dissipation process.
2Object-affected harmful factors
If the driver's station is isolated from the chassis to reduce vibrations, then comfort is improved, but the structural stability and support are reduced
Solution Approach 1:
The patent changes the parameters of the mounting structure by using vibration-damping materials and flexible mounting elements that have specific mechanical properties. These elements are designed with optimized damping coefficients and stiffness values that allow them to filter out high-frequency vibrations while maintaining adequate structural support and stability for the driver's station.
Data Source
AI summary
A self-propelled machine for cutting or milling, has a chassis (1), which is carried by track-laying units or wheels and which has a cutting or milling arrangement (2) and an arrangement (8) for adjusting the height of the chassis to set the depth of cutting or milling. The basic principle of the machine according to the invention is that the driver's station is decoupled from the shaking movements or vibrations from the arrangement (2) for cutting or milling which are transmitted to the chassis, and from the vibrations from the internal combustion engine for driving the machine.