DEVICE FOR DETECTING ELONGATION OF HYDRAULIC CYLINDER
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United States of America Patent
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Issued Date -
Dec 7, 2023
app pub date -
Apr 15, 2021
filing date -
Oct 22, 2020
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Abstract
A device for detecting the elongation of a hydraulic cylinder includes an electric signal conversion device, a ruler and a positional magnetic ring. The electric signal conversion device is disposed at the bottom of a cylinder barrel. The ruler has an end fixedly connected to the electric signal conversion device, as well as the other end movably extending into a piston rod. The positional magnetic ring is fixedly connected to a piston and the positional magnetic is movably disposed around the periphery of the ruler. When the positional magnetic ring is located at different positions of the ruler, different circuits are turned on to transmit a voltage or current signal corresponding to the positions of the ruler to the electric signal conversion device, so as to obtain a position of the positional magnetic ring on the ruler, such that the elongation of the piston rod is obtained.
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