Squeeze-in type wheel load force transducer
A force sensor, wheel weight technology, applied in the direction of measuring force, instruments, measuring devices, etc., can solve the problems of nonlinear error zero point and instability, and achieve the effect of improving nonlinear error and zero point instability.
Active Publication Date: 2011-03-09
HANGZHOU QIANJIANG WEIGHING TECH
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Problems solved by technology
[0007] The present invention aims to solve the problem that the plug-in load cell is prone to non-linear error and zero point instability, and therefore provides a plug-in wheel load cell of the present invention, which can effectively overcome nonlinearity and zero point instability. stable
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[0026] The plug-in wheel load force sensor, the circular cylinder is provided with a deformation control area 1, a sensitive area 2 and an isolation area 4. The sensitive area is attached with a strain gauge 6, and the cylinder is equipped with a compensation plate 5, outside the sensor The end is connected with a shielded cable 8, and the outer wall of the cylinder is provided with four circumferentially evenly distributed and radially symmetrical ribs 3, the height of the two ribs in the radial direction of I-III is lower than that of the two ribs in the radial direction of II-IV height.
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The invention discloses a squeeze-in type wheel load force transducer which can effectively solve the defects of non-linearity and zero-point instability. A deformation control area (1), a sensitive area (2) and an isolation area (4) are arranged on an annular barrel, a strain gage (6) is fitted on the sensitive area, and four radially symmetrical ribs (3) uniformly and circumferentially distribute on the outer wall of the barrel. The squeeze-in wheel load force transducer is characterized in that the heights of the two ribs in the radial direction I-III is smaller than those of the two ribs in the radial direction II-IV. The invention is suitable for the squeeze-in force transducer.
Description
Technical field [0001] The present invention relates to a device that uses the property that resistance changes with the magnitude of force to measure force or stress. Background technique [0002] The plug-in load cell is a device that measures the force of an object. For example, insert a plug-in sensor into the mounting hole of a steel rail. When the rail car wheel acts on the rail, the rail deformation caused by gravity causes the sensor to deform accordingly, which changes the resistance of the strain gauge and produces a changed electrical signal output. Calculate and measure the magnitude of the force. [0003] The plug-in load cell in the prior art, the first is such as Figure 7 , Figure 8 The conical table structure sensor used by the Japanese company shown is an interference fit because the entire interface is in contact with the rigid structure. In the process of transferring stress through the rigid structure, the contact surface is too large and will follow the actio...
Claims
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IPC IPC(8): G01L1/22
Inventor 顾增华凌行峰戴明新
Owner HANGZHOU QIANJIANG WEIGHING TECH
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