| 摘要 |
The sensor comprises a pair of shafts mounted end to end for rotation within a stationary housing. The adjacent ends of the shafts are spaced apart by a thrust bearing so that axial force can be transmitted from the first shaft, connected to motor means, to the second shaft, connected to load means, but the first shaft can still oscillate relative to the second shaft. A sleeve encases the adjacent ends of the shafts. Balls, positioned in grooves formed in the sleeve and second shaft, lock the two together for rotational movement but enable the sleeve to slide longitudinally. Helical slots are cut in the sleeve portion encasing the first shaft. The first shaft carries cam followers which engage the slots. When torque is applied to the first shaft, the cam followers force the sleeve to move longitudinally in proportion to the torque. The sleeve biases a piston which pressurizes hydraulic fluid to actuate a Bourdon tube and provide a read-out of the torque measurement. The torque is transmitted from the first shaft through the balls to the second shaft and the shafts and sleeve rotate as a unit.
|
