Compactor Roller Oscillation Vibration Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing soil compactors face challenges in achieving optimal compaction results due to imbalances in mass and natural frequencies during oscillation and vibration movements, leading to inefficient energy transfer and coordination issues between rotational movements.
Innovation Solution
A compactor roller design featuring independent oscillating and vibrating mass arrangements with adjustable speed conversion ratios, using a transmission gear system with planetary gears and belt drives to optimize oscillation and vibration frequencies, ensuring coordinated rotational movements and adaptable unbalance masses for varying soil types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single mass arrangement is used for both oscillation and vibration movements, then the device complexity is reduced, but the manufacturing precision and performance optimization for each movement type deteriorates
Solution Approach 1:
The mass arrangement is divided into two independent segments: an oscillating mass arrangement with at least one oscillating shaft and unbalanced mass for generating oscillation movement, and a vibrating mass arrangement with a vibrating shaft and unbalanced mass for generating vibration movement. This segmentation allows each mass arrangement to be independently optimized for its specific movement type while maintaining separate control over oscillation and vibration parameters.
2Productivity
If the compactor roller rotates at high speed, then the productivity is improved, but the coordination between rotational movement and oscillation/vibration movements deteriorates due to speed shift
Solution Approach 1:
The transmission gear arrangement incorporates a variable speed conversion ratio that dynamically adapts to the compactor roller's rotational speed. As the roller speed changes, the transmission gear arrangement adjusts the speed conversion ratio accordingly, maintaining proper coordination between the rotational movement of the compactor roller and the oscillation/vibration movements generated by the mass arrangements.
Solution Approach 2:
The system establishes a feedback mechanism where the rotational speed of the compactor roller is continuously monitored, and the transmission gear arrangement adjusts the speed conversion ratio in response to this speed information, ensuring that the oscillation and vibration frequencies remain properly coordinated with the rotational speed regardless of operational conditions.
3Device complexity
If fixed unbalance masses are used, then the device complexity is reduced, but the adaptability to different soil types and compaction requirements deteriorates
Solution Approach 1:
The unbalanced masses in both the oscillating and vibrating mass arrangements are designed to be adjustable rather than fixed. This allows the unbalance masses to be modified according to different soil types and compaction requirements, enabling the compactor roller to adapt its oscillation and vibration characteristics to various working conditions while maintaining a relatively simple overall structure.
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 allows for improved compaction efficiency by independently optimizing oscillation and vibration states, maintaining coordination between rotational movements, and adapting to different soil types, resulting in enhanced compaction results and reduced energy inefficiencies.
Implementation Method 1
two unbalanced masses are provided on each unbalance shaft at an axial distance... the unbalance masses on the other unbalance shaft move in an angular range of 180° with respect to the assigned unbalance shaft around its axis of rotation
Implementation Method 2
a vibrating unbalanced mass rotating about one vibrating shaft rotating... a state in which the compressor roller is excited to a periodic deflection movement radially to its axis of rotation
Implementation Method 3
a plurality of elastic suspension elements (18, 20) which are arranged in the interior of the compactor roller and are fixed on the compactor frame
Implementation Method 4
supported on the compactor frame elastically and thus also shock-absorbing or vibration-absorbing
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A compactor roller for a soil compactor comprises an oscillation mass arrangement (34) with at least one oscillation shaft (36, 38) which can be rotated about an oscillation shaft axis of rotation eccentric with respect to a compactor roller axis of rotation and which has at least one oscillation unbalanced mass (66, 68), and a vibration mass arrangement (84) with a vibration shaft (86) which can be rotated about a vibration shaft axis of rotation (Dv) and which has at least one vibration unbalanced mass (96), wherein at least one oscillation shaft (36, 38) and the vibration shaft (86) are supported such that they can be driven to rotate in the compactor roller (10).