Vertical Spring Damping Device for Frequency Adjustment
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Solution Overview
Problem
Conventional damping devices face challenges in adjusting the characteristic frequency of the damping body without mechanical restrictions, requiring multiple springs and complex adjustments, which complicates the process and increases space requirements.
Innovation Solution
A damping device with a vertically mounted characteristic-frequency adjusting spring or springs between the damping body and the structure, allowing for oblique expansion and adjustment without restricting the damping body's movement, and a method using resilient structural bodies with adjustable tension to set the characteristic frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the spring constant is changed to adjust the characteristic frequency, then the characteristic frequency can be adjusted, but the expansion/contraction stroke of the spring changes which restricts the motion of the damping body and lowers the damping effect
Solution Approach 1:
The patent introduces a vertical dimension for spring placement, positioning the spring vertically above the damping body rather than horizontally alongside it. This dimensional change allows the spring's expansion and contraction to occur in the vertical direction while the damping body moves horizontally, eliminating the mechanical restriction problem and enabling independent adjustment of characteristic frequency without affecting motion stroke.
2Adaptability or versatility
If multiple springs with different spring constants are prepared to match different structure frequencies, then the characteristic frequency can be matched, but the device complexity and space requirements increase
Solution Approach 1:
The patent enables continuous adjustment of the spring's physical parameters, specifically its pre-compression amount and effective stiffness, through mechanical adjustment mechanisms. This allows a single spring to adapt to different frequency requirements by changing its parameters, eliminating the need for multiple springs with different constants and simplifying the overall device structure.
3Adaptability or versatility
If the spring expansion/contraction stroke is increased to accommodate frequency adjustment, then the characteristic frequency range expands, but the two-dimensional space required for installation increases
Solution Approach 1:
By relocating the spring's expansion and contraction motion to the vertical dimension, the patent decouples the frequency adjustment range from the horizontal installation footprint. The spring can have a large stroke for wide frequency adjustment while occupying minimal horizontal space, as its motion occurs vertically above the compact damping body assembly.
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
Enables easy adjustment of the damping body's characteristic frequency without mechanical restrictions, reducing space requirements and simplifying the installation process, while maintaining effective oscillation suppression in structures with varying frequencies.
Implementation Method 1
a characteristic-frequency adjusting spring or springs for adjustment of a characteristic frequency of the damping body are mounted vertically between the damping body and the structure so that an expansion/contraction force is vertically exerted
Implementation Method 2
A resilient structural body or bodies are mounted between a structure and a damping body resting for horizontal reciprocation against the structure such that a vertical tension is exerted, an initial tension of the resilient structural body or bodies being adjusted to set the characteristic frequency of the damping body
Data Source
AI summary
Installed on a top of a structure (1) is a base stand (11) against which damping body (3) movably rests via a linear guide mechanism (12). Mounted between the damping body (3) and the structure (1) or between the damping body (3) and a top of a support housing (14) erected on the structure (1) is a characteristic-frequency adjusting spring or springs (13) with an initial tension being applied vertically. Movement of the damping body (3) causes the spring or springs (13) to be obliquely and longitudinally expanded to apply horizontal component to the damping body (3) upon restoring.