SU1545109A1 - Device for measuring torque - Google Patents

Abstract

The invention relates to a measurement technique and can be used to measure the torques transmitted by a rotating shaft drive mechanism. The aim of the invention is to improve the measurement accuracy. Under the action of the torque, the crosspiece 11 deforms in the tangential direction, resulting in a mutual angular rotation of the rim 8 and the flat ring 7. Due to the interaction of the balls 6 with the walls of the recesses 12 and 13, the flat ring 7 is released from the rim 8, which is opposed by the crosspiece 10. The axial movement of the flat ring 7 leads to the redistribution of gaps between it and the inductive sensors 2-5, connected in a differential circuit, the signal with which is proportional to the measured torque. 5 il.

Description

The invention relates to measuring equipment and can be used

Designed to measure the torque transmitted by a rotating shaft drive mechanism.

The aim of the invention is to increase accuracy.

• Figure 1 shows the design of the proposed device; figure 2 - then | Me, the plan; in Fig.3 ~ placement of the construction of an inductive sensor; figure 5 ~ circuit © unity of inductive sensors.

A device for measuring torque 15 (FIGS. 1 and 2) comprises a torque converter 1 into axial displacement and an inductive axial displacement transducer made in the form of four inductive sensors 2-5. Converter 1 of the torque number in axial movement contains balls 6, as well as a coaxially mounted flat ring 7 ″ rim 8 and a hub 9, equipped with two cross pieces 25 10 and 11. Moreover, the cross 10 is made elastic in the axial direction, and the cross 11 made elastic in the tangential direction . On the end surfaces of the rim 8 and the flat ring 7 (FIG. 3), the grooves are recessed; figure 4 ΤΙ

C 'and 13, into which the balls are inserted 6. The hub 9 is connected to the shaft 14, the rim 8 is connected through the flange 15 and the rim is connected via the flange 15 to the aal 16 (Fig. 1). Inductive sensors 2-5 are made in the form of a ferromagnetic housing 17 with a winding 18 (Fig. 4) and interconnected in a bridge circuit (Fig. 5).

The device works as follows: · ‘Under the influence of a torque Deformation of the crosspiece 11

ΙΟ in the tangential direction. In this case, a mutual angular turn of the flat ring 7 and the rim 8 takes place, and due to the interaction of the balls 6 with the walls of the recesses 12 and 13, the gap between the flat ring 7 and the Rim 8 changes, and the gap ratio between the inductive sensors 2-5 and the flat ring also changes which leads to a change in the output signal of the axial displacement transducer in proportion to the measured torque.

Claims (1)

SUMMARY OF THE INVENTION A torque measuring device comprising an inductive axial displacement transducer and a torque to axial displacement transducer, the output element of which is made in the form of a flat ring connected to an inductive axial displacement transducer, related that, in order to improve accuracy, the inductive transducer of axial displacement is made in the form of two pairs of inductive sensors, each of which is installed with the coverage of the transducer flat ring about the moment in the axial movement, into which the balls are inserted, as well as the rim and the hub coaxial with the flat ring, with two crosses, 35 one of which is made elastic in the axial direction and connected to the flat ring, and the other is made elastic in the tangential direction and connected to a rim connected to a flat ring through balls mounted in recesses made on the respective end surfaces {of the rim and the flat ring.