Dual Cantilever Load Cell Configuration for Position Deviation Error Reduction
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Solution Overview
Problem
Existing load detectors using beam type load cells suffer from position deviation errors due to varying load transmission paths, leading to inaccurate load detection.
Innovation Solution
A dual beam type load cell configuration where two beam type load cells support a mounting part at their free ends, facing opposite directions, reducing bending and position deviation errors by stabilizing the mounting plate on a straight line connecting the supported points, and allowing for precise load detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single beam type load cell with a mounting plate is used, then the device complexity is reduced, but position deviation error increases due to varying load transmission paths
Solution Approach 1:
The single load cell is segmented into two beam type load cells (first and second load cells) that face each other. Each load cell independently supports the mounting part at its free end, creating separate load transmission paths. This segmentation allows the system to measure loads more accurately by reducing position deviation errors while maintaining manageable structural complexity through modular design.
2Ease of manufacture
If the mounting plate is fixed to one end of the beam type load cell, then the ease of manufacture is improved, but position deviation error occurs when the measurement target is placed at various positions
Solution Approach 1:
The mounting part is positioned between two beam type load cells that face each other in opposite directions. This spatial arrangement creates a symmetric configuration where the first load cell extends in one direction and the second load cell extends in the opposite direction. This dimensional symmetry ensures that regardless of where on the mounting part the measurement target is placed, the load is evenly distributed through both load cells, eliminating position deviation errors while maintaining ease of 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
The dual beam type load cell configuration effectively reduces position deviation errors and enhances the accuracy of load detection, enabling stable and precise measurement of loads on beds.
Implementation Method 1
a first beam type load cell which is supported on a first support base in a cantilever manner to have a free end; a second beam type load cell which is disposed to face the first beam type load cell
Data Source
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AI summary
There is provided a load detector which detects a load successfully while reducing the influence of a position deviation error. The load detector (100) includes: a first beam type load cell (21) which is supported on a first support base (11b) in a cantilever manner to have a free end (21sf); a second beam type load cell (22) which is disposed to face the first beam type load cell (21) and which is supported on a second support base (12b) in a cantilever manner to have a free end (22sf); and a mounting part (3) on which an object is to be placed, which includes a first connection part (32) connected to the first beam type load cell and a second connection part (33) connected to the second beam type load cell, and which is disposed between the first beam type load cell and the second beam type load cell. The free end of the first beam type load cell and the free end of the second beam type load cell face opposite directions to each other in an extending direction of the first beam type load cell. The first connection part of the mounting part is connected to the first beam type load cell on a side of the free end of the first beam type load cell and the second connection part of the mounting part is connected to the second beam type load cell on a side of the free end of the second beam type load cell.