Measuring Band Sensor 90-Degree Twist for Multi-Directional Deflection
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Solution Overview
Problem
Measuring band sensors are limited in their deflection capabilities outside the inlet opening, allowing only radial plane deflections, which restricts movement options and can lead to torsional stress and potential damage when rotated beyond 90 degrees, limiting their service life and accuracy.
Innovation Solution
Rotating the measuring band outside the housing by exactly 90 degrees to align its rectangular cross-section with the radial plane of the winding drum, ensuring a sufficient free-length to prevent damage and enhance deflection capabilities within a defined range, while maintaining the advantages of measuring band sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the measuring band is deflected in directions other than the radial plane, then deflection flexibility is improved, but the measuring band cannot be deflected transversal to the radial plane without rotating the free end
Solution Approach 1:
The measuring band is pre-rotated by 90 degrees during installation or initial setup, aligning its cross-section with the radial plane of the winding drum. This preliminary action enables the measuring band to subsequently deflect in multiple directions including transversal to the radial plane, while maintaining proper alignment and avoiding excessive torsion during normal operation.
2Adaptability or versatility
If the free end of the measuring band is rotated by more than 90 degrees, then deflection capability is improved, but torsional stress increases and may damage the measuring band
Solution Approach 1:
The measuring band is rotated by exactly 90 degrees, which is the optimal angle that provides sufficient deflection capability in all required directions without causing excessive torsion. This partial rotation (exactly 90 degrees rather than more) achieves the necessary adaptability while protecting the measuring band from damaging torsional stress that would occur with greater rotation angles.
3Adaptability or versatility
If the measuring band is rotated to align cross-section with radial plane, then deflection flexibility is improved, but a sufficient free-length must be maintained to prevent damage
Solution Approach 1:
The measuring band is configured with different properties in different sections: the portion inside the housing maintains a specific orientation for measurement, while the free end portion outside the housing is rotated 90 degrees to enable multi-directional deflection. Additionally, a sufficient free-length is maintained in the rotated section to accommodate the torsion required for alignment without causing damage, creating local adaptations that solve the overall problem.
Data Source
AI summary
In order to be able to deflect a free end of a measuring band of a measuring band sensor not only in a direction transversal to an inlet plane according to the invention the free end of the measuring band 3 arranged outside of the housing is twisted about its longitudinal axis by 90° at the most. This facilitates deflections of a total of 180°. When a deflection within the remaining 180° shall be facilitated, a torsion of the free end of the measuring band also has to be provided by 90°, but in the other direction with respect to the inlet plane.