Torque measuring device
OwnerHeinrich Grunbauminventor
Life of this patent
Estimating the term…
Abstract
The torque exerted by an electric motor upon its mounting flange is determined by measuring the reaction torque. For this purpose the motor housing is connected to the flange so that it has limited freedom of angular turning movement relative thereto, and such movement is detected by strain gauges or similar devices which yield a signal proportional to the degree of turning movement.
Claims5
Device for measuring the torque exerted by an electric motor having a housing provided with an extension upon a mounting flange of the motor, comprising means mounting said motor housing on said flange with limited freedom of angular displacement relative thereto and including a rolling body track connecting said extension and flange with freedom of said angular displacement but without freedom of relative displacement in any other sense, said rolling body track including two concentric facing annular grooves in said extension and flange, respectively, and a series of rolling bodies confined in the space between said facing grooves;
- and means for sensing any relative angular displacement which results due to the reaction torque, and for generating a signal proportional to the degree of angular displacement, said grooves being arranged similar to a radial bearing, and said rolling bodies being bearing balls each engaging said extension and flange at four contact points.
Device for measuring the torque exerted by an electric motor having a housing provided with an extension upon a mounting flange of the motor, comprising means mounting said motor housing on said flange with limited freedom of angular displacement relative thereto and including a rolling body track connecting said extension and flange with freedom of said angular displacement but without freedom of relative displacement in any other sense, said rolling body track including two concentric facing annular grooves in said extension and flange, respectively, and a series of rolling bodies confined in the space between said facing grooves;
- and means for sensing any relative angular displacement which results due to the reaction torque, and for generating a signal proportional to the degree of angular displacement, said grooves being arranged similar to an axial bearing, and said rolling bodies being bearing balls each engaging said extension and flange at four contact points.
Dependencies are inferred from the claim text.