Load measuring device for railcar bogie
First Claim
1. A load measuring device for a railcar bogie in which a first elastic body constituted by a vibrationproof rubber or a suspension spring is interposed between an axle box and a bogie frame, the load measuring device comprising:
- a first load fluctuation sensor disposed in parallel with the first elastic body, the first load fluctuation sensor being configured to deform in conjunction with elastic deformation of the first elastic body in a first direction that is one of either (i) a vertical direction with respect to the railcar bogie, or (ii) a lateral direction with respect to the railcar bogie, the first elastic body supporting a downward load from the bogie frame, the first load fluctuation sensor being configured to vary an electric output based on changes in electrostatic capacitance of the first load fluctuation sensor resulting from the deformation of the first load fluctuation sensor in conjunction with the elastic deformation of the first elastic body in the first direction, the deformation of the first load fluctuation sensor is parallel and directly proportional to the deformation of the first elastic body.
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Accused Products
Abstract
A load measuring device for a railcar bogie in which a vibrationproof rubber between an axle box and a bogie frame includes a vertical load fluctuation sensor in parallel with the vibrationproof rubber and configured to deform in conjunction with elastic deformation of the vibrationproof rubber in a vertical direction, the vibrationproof rubber supporting a downward load from the bogie frame. The vertical load fluctuation sensor changes an electric output by the deformation of the vertical load fluctuation sensor in conjunction with the elastic deformation of the vibrationproof rubber in the vertical direction.
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Citations
9 Claims
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1. A load measuring device for a railcar bogie in which a first elastic body constituted by a vibrationproof rubber or a suspension spring is interposed between an axle box and a bogie frame, the load measuring device comprising:
a first load fluctuation sensor disposed in parallel with the first elastic body, the first load fluctuation sensor being configured to deform in conjunction with elastic deformation of the first elastic body in a first direction that is one of either (i) a vertical direction with respect to the railcar bogie, or (ii) a lateral direction with respect to the railcar bogie, the first elastic body supporting a downward load from the bogie frame, the first load fluctuation sensor being configured to vary an electric output based on changes in electrostatic capacitance of the first load fluctuation sensor resulting from the deformation of the first load fluctuation sensor in conjunction with the elastic deformation of the first elastic body in the first direction, the deformation of the first load fluctuation sensor is parallel and directly proportional to the deformation of the first elastic body. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A load measuring device for a rail car bogie in which a first elastic body constituted by a vibrationproof rubber or a suspension spring is interposed between an axle box and a bogie frame, and a second elastic body constituted by a vibrationproof rubber or a suspension spring is interposed between the axle box and the bogie frame, the load measuring device comprising:
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a first load fluctuation sensor disposed in parallel with the first elastic body, the first load fluctuation sensor being configured to deform in conjunction with elastic deformation of the first elastic body in a first direction that is one of either (i) a vertical direction with respect to the railcar bogie or (ii) a lateral direction with respect to the railcar bogie, the first elastic body supporting a downward load from the bogie frame, the first load fluctuation sensor being configured to vary an electric output based on the deformation of the first load fluctuation sensor in conjunction with the elastic deformation of the first elastic body in the first direction; and a second load fluctuation sensor disposed in parallel with the second elastic body the second elastic body being configured to deform in conjunction with elastic deformation of the second elastic body in a second direction that is the other of (i) the vertical direction with respect to the railcar bogie, or (ii) the lateral direction with respect to the railcar bogie, the second elastic body supporting the downward load from the bogie frame, the second load fluctuation sensor being configured to vary an electric output based on the deformation of the second load fluctuation sensor in conjunction with the elastic deformation of the second elastic body in the second direction. - View Dependent Claims (8, 9)
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Specification