Adaptive Exciter for Soil Compaction
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Solution Overview
Problem
Existing soil compaction devices lack the ability to optimally adjust their vibration parameters in response to varying soil conditions, leading to inefficient compaction, potential machine damage, and increased operational time.
Innovation Solution
A soil compaction device equipped with an adaptive unbalance exciter system, which includes a control device that automatically adjusts at least two parameters (such as centrifugal force, excitation frequency, and unbalance adjustment angle) based on real-time soil compaction state detection using sensors and predetermined rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the centrifugal force and excitation frequency are kept constant regardless of soil conditions, then the machine structure remains simple and easy to operate, but the compaction efficiency decreases and working time is wasted
Solution Approach 1:
The patent applies dynamics by making the exciter parameters (centrifugal force and excitation frequency) variable rather than fixed. The control device automatically adjusts these parameters based on real-time soil compaction state detection, enabling the system to adapt to different soil conditions and compaction stages, thereby resolving the contradiction between maintaining simple operation and improving compaction efficiency.
Solution Approach 2:
The patent implements parameter changes by varying the centrifugal force and excitation frequency based on detected soil compaction levels. The control device modifies these parameters dynamically - using higher centrifugal force and frequency for uncompacted soil and reducing them as compaction progresses - which directly addresses the productivity improvement while managing system complexity through automated control.
2Reliability
If the exciter operates at high centrifugal force continuously, then compaction power is sufficient for uncompacted soil, but the machine jumps and causes damage when soil is already compacted
Solution Approach 1:
The patent applies feedback by using a detection device to monitor soil compaction state in real-time and feeding this information back to the control device. The control device then adjusts the centrifugal force accordingly - maintaining high power when soil needs compaction and reducing it when compaction is sufficient - preventing machine jumping and damage while ensuring reliable operation.
Solution Approach 2:
The patent implements periodic action through multiple compaction passes with adjusted parameters. The system applies high centrifugal force during initial compaction passes, then reduces force in subsequent passes as soil becomes compacted, creating a periodic compaction process that prevents damage while maintaining effectiveness.
3Manufacturing precision
If the machine travels slowly over fully compacted soil to ensure thorough compaction, then compaction quality is maintained, but the working speed decreases and time is wasted
Solution Approach 1:
The patent applies partial action by adjusting the centrifugal force to match the actual compaction needs. When soil is fully compacted, the system reduces centrifugal force and allows faster travel speed, applying compaction effort only where needed. This prevents wasting time on already compacted areas while maintaining compaction quality in areas that require it.
4Adaptability or versatility
If manual adjustment of exciter parameters is required for different soil conditions, then the system can adapt to various conditions, but the ease of operation decreases and requires specialized knowledge
Solution Approach 1:
The patent implements self-service by enabling the machine to automatically detect soil compaction state and adjust its own exciter parameters without operator intervention. The detection device and control device work together to autonomously adapt to different soil conditions, eliminating the need for operator knowledge and manual adjustment while maintaining full adaptability.
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
The adaptive unbalance exciter system enables the soil compaction device to optimize its compaction performance and movement efficiency according to the specific soil conditions, reducing the number of passes required for complete compaction and minimizing the risk of machine damage.
Implementation Method 1
one or more imbalance masses 24 are arranged on the imbalance shaft 23, which are driven in rotation with the imbalance shaft 23. The imbalances generate a centrifugal force and thus a vibration for soil compaction
Data Source
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AI summary
A soil compaction device for compacting soil is specified, comprising a vibration exciter device (14) for generating a vibration for soil compaction, in which at least two parameters that influence the vibration generated by the vibration exciter device (14) are variable; a soil compaction measuring device (18) for detecting a compaction state of the soil; and a control device (1, 17) for adjusting at least one of the at least two parameters; wherein the control device (1, 17) is designed to automatically adjust at least one of the at least two variable parameters depending on the detected compaction state and a predetermined set of rules.