SU1493887A1 - Device for measuring torque - Google Patents

Abstract

The invention relates to mechanical engineering, specifically to devices for measuring torque in mechanisms and machines. The purpose of the invention is to improve the measurement accuracy by increasing the sensitivity. The device for measuring the torque contains two shaft 1.2, connected by a sensitive element 3, made in the form of a differential mechanism, the carrier 4 of which is connected to the shaft 1 and the crown gear 5 - with the shaft 2, and the sun gear 6 on one end 7 is equipped torsion shaft 8, connected with ring gear 5, and at the other end 9, a rotary motion converter into linear movement 10, made, for example, in the form of a cam pair 11 installed in the carrier 4 and coaxial to it 11, one of which is connected to sun gear it is 6 and is mounted relative to the carrier 4 rotatably, and the other part 13 is connected to the coaxial carrier 4 by ring 14 and installed relative to the carrier 4 with the possibility of axial movement opposite to the impact of the spring 15. Axial movement of part 13 of the cam pair 11 relative to the carrier 4 is provided by a pin 16 installed in part 13 and cooperating with a groove 17 made in the carrier 4, and the connection of part 13 to the ring 14 is made in the form of a rod 18 installed in the shank 19 of part 13 and the hole 20 of the ring 1 4. The torque meter is made, for example, in the form of an arrow 21 mounted on a fixed support 22 and cooperating at one end 23 with a groove 24 of a ring 14, while its other end 25 is provided with a turn indicator 26. An electrical system for converting a linear movement of a ring 14 is possible. in a controlled amount. 1 il.

Description

The torque meter is made, for example, in the form of an arrow 21 mounted on a fixed support 22 and cooperating at one end 23 with a groove 24 of the ring 14, wherein the other is in 14938874

Its end 25 is equipped with a turn indicator 26. An electrical system for converting linear transducer is possible. moving the ring 14 to the controlled

magnitude. 1 il.

The invention relates to mechanical engineering, in particular, to devices for measuring torque in mechanisms and machines.

The purpose of the invention is to increase accuracy from 1 by increasing the sensitivity.

The drawing shows a device for measuring torque, longitudinal section.

The device for measuring the torque contains two shafts 1.2 connected by a sensing element 3, made in the form of a differential mechanism, the carrier 4 of which is connected with shaft 1, the crown gear 5 with shaft 2, and the sun gear 6 at one end 7 is equipped with a torsion shaft 8, connected to the gear 5, and at the other end 9 with a rotational-to-linearity converter TO made, for example, in the form of a cam pair 11 installed in the carrier 4 and coaxial with it connected with the sun 6 and is mounted relative to the carrier with the possibility of rotation, and the other part 13 is connected with the coaxial carrier 4 by the ring 14 and is installed relative to the carrier 4 with the possibility of axial movement opposite to the impact of the spring 14 on it.

The possibility of axial movement of the part 13 of the cam pair II relative to the carrier 4 is ensured by the pin 16 installed in the part 13 and interacting with the groove 17 made in the carrier 4, and the connection of the part 13 to the ring 14 is made in the form of a rod 18 installed in the tail - vichok 19 parts 13 and holes 20 of the ring 14.

The torque meter is tightly, for example, in the form of an arrow 21 mounted on a fixed support 22 and interacting with one arm 23 with a groove 24 of the ring 14, while

The end 25 is provided with a turn indicator 26. An electrical system for converting the linear movement of the ring 14 into a controlled quantity is also possible.

The device for measuring torque acts as follows.

The device is embedded in the shaft pipe, the torque on; the motor must be measured using two flanges 27, 28. The torque transmitted from shaft 1 to shaft 2 is divided into two streams on the carrier 4 of the planetary mechanism. The first stream is transmitted via satellite 29 and ring gear 6 and torsion shaft 8. The values of the streams transmitted through ring gear 5 and sun gear 6 depend on the internal gear ratio K of the planetary mechanism and are determined by the formulas:

M M, where M and M

with -k; t

magnitudes of torques transmitted via corona and sunfish respectively.

The torque flow transmitted through the torsion shaft 8 spins it, which rotates the sun gear 6 and the ring gear 5 relative to the carrier 4. The angular displacements of the sun 6 and the ring gear 5 relative to the carrier 4 when the torque 8 is twisted are related

.ars

the angular displacements of the crown and sun gears, respectively; the amount of angular displacement of the torsion shaft.

where lf and.

H

torso

5149388

As a result of the rotation of the part 12 combined with the sun gear 6 relative to the carrier 4, the magnitude of which is linearly dependent.

 about ti of the value measured by the device

torque, through the cam pair 11, part 13, due to fixation from turning relative to the carrier A, receives a linear displacement due to the pin 16. This linear movement of part 13 through the tailpiece 19, the rod 18 and the ring 14 is transmitted

arrow 21, which indicates by indicator 26 the magnitude of the measured torque. Spring 15 serves to press part 13 to part 11, i.e. to provide reverse tracking of the device while decreasing the magnitude of the measured torque,

The device also works with a reversed direction of torque, with this principle of transforming torque into indicator readings similar to that described.

6

Claims (1)

Invention Formula A torque measuring device comprising two shafts connected by a sensitive element connected to a torque converter in displacement and a torque meter, characterized in that, in order to measure accuracy, the sensitive element is made in the form of a differential connected with one shaft, crown gear - with another, sun gear connected to the ring gear through the torsion shaft, and from the drive gear through the torque converter to linear movement associated with the torque meter, the torque converter to movement being made in the form of a cam pair aligned in the driver and coaxial to it parts of which is connected to the sun gear, and the other is spring-loaded and connected to the coaxial carrier, the ring, and the ring is connected to the moment meter.