Transverse Deflection Hanging Scale for Reduced Vertical Height
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Solution Overview
Problem
Hanging scales used in patient lifts and truck lifts occupy vertical space, reducing the maximum height at which a load can be lifted while measuring weight, as they expand vertically to calculate weight by deformation.
Innovation Solution
A hanging scale design with a transversely oriented deflection measurement section between two bearings aligned along the vertical axis, using strain gages or other sensors to measure deflection, allowing for a reduced overall height by spacing the deflection measurement section laterally apart from the attachment sections, and incorporating an overload protection device for mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the hanging scale uses a vertical deflection measurement section to measure weight, then weight measurement is achieved, but the overall height of the device increases
Solution Approach 1:
The patent reorients the deflection measurement section from a vertical arrangement to a transverse (horizontal) arrangement. The deflection measurement section now extends perpendicular to the vertical axis, with its deflection plane oriented transversely. This dimensional change allows the measurement function to be maintained while the vertical height is reduced, as the measurement occurs in a horizontal plane rather than extending vertically.
2Productivity
If the hanging scale is installed between the boom and cradle, then efficient lifting and weighing is achieved, but vertical space is consumed and maximum lift height is reduced
Solution Approach 1:
The patent reconfigures the measurement section to operate in a transverse dimension rather than extending vertically. The deflection measurement section is oriented with its plane perpendicular to the vertical axis, allowing the scale to maintain its weighing function while occupying minimal vertical space. This enables installation in confined vertical spaces without sacrificing measurement capability.
3Length of moving object
If the deflection measurement section is spaced laterally apart from attachment sections, then overall height is reduced, but structural stability may be affected
Solution Approach 1:
The patent applies different structural characteristics to different parts of the device. The connecting sections are designed with specific geometric features and material properties to provide local reinforcement where needed, while the deflection measurement section maintains its compact transverse orientation. This localized structural optimization ensures stability is maintained in critical areas while allowing the overall height to be reduced through the transverse measurement arrangement.
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 design minimizes the vertical height of the hanging scale, maintaining efficient weight measurement accuracy and preventing mechanical failure, thus allowing for increased lift height without substantial space reduction.
Implementation Method 1
at least one strain gage mounted at the deflection measurement section
Data Source
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AI summary
A hanging scale for measuring the weight of a hanging load comprises a first attachment section comprising a first bearing and a second attachment section comprising a second bearing, the first bearing and the second bearing being aligned along a vertical axis during operation of the hanging scale; at least one longitudinal deflection measurement section which has a first end and a second end, the deflection measurement section being located between the first bearing and the second bearing and being oriented transversely with respect to said vertical axis; a first connecting section which at least partially extends laterally from the first attachment section with respect to said vertical axis, the first connecting section connecting the first bearing to the first end of the deflection measurement section; and a second connecting section which at least partially extends laterally from the second attachment section with respect to said vertical axis, the second connecting section connecting the second bearing to the second end of the deflection measurement section.