SU1357731A1 - Torque-measuring device - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to increase reliability. The light flux of the illuminator 28 modulated by the disks 25 and 26 is sensed by the photo-detectors 29 and 30, where sequences of electrical pulses are shifted in time. These pulses through the amplifiers 31 and 32 are fed to the recorder 21. The magnitude of the phase shift of the pulses is proportional to the transmitted moment. If the angular deformation of the shaft 1 reaches a certain value, then the contacts 14-15 or 16-17 will close. A signal about this through the rings 7-9, brushes 18-20 is fed to the recorder 21. The bending moment both from the engine side and from the side to the side. the weights are perceived by the corresponding pair of bearings 4 and 33. located on one sleeve, and on the shaft 1 is not damaged. 1 hp f-ly, 2 ill. I С

Description

one

The invention relates to measurement technology and can be used to measure torque in a non-contact manner.

The invention is an increase in reliability,

Fig. 1 is a schematic diagram of a torque meter; FIG. 2 is a section A-A in FIG. 1,

The device contains a torsion shaft 1, on which the sleeves 2 and 3 are fixed with bearings 4, the latter are installed in the meter body (not shown), the sleeves 2 and 3 contain toothed disks 5 and 6 and electrically insulated rings 7-9, and on the ends diametrically located in the form of annular sectors, the protrusions 10 and 11 on the sleeve 2 and 12 and 13 are on the sleeve 3. In this case, the protrusions of one sleeve enter the depressions of the second and form an angular gap S (Fig. 2) equal to the admissible twist angle of the torsion shaft. The tabs 10-13, sleeves 2 and 3 carry the contacts 14, 15 and 16, 17, At that, the contact 14 is connected to the ring 7 5 the contacts 15 and 1 b - to the ring 8, and the contact 17 - to the ring 9, the collector is pressed to the rings brushes 18--20, and connected to the resistor 21, On parallel torsionno-. An axle shaft in bearings 22 and 23 is provided with a modulator 24 with toothed disks 25 and 26, having an electric drive, 27 with frictional coupling. The illuminator 28 is located inside the teeth zones of the discs, and two photoreceivers 29 and 30, connected through amplifiers 31 and 32 to the recorder, are located outside. Contacts 14–17 form a switching group of electrical contacts that allows determining the limiting angular deformation of the torsion of each sign. The torsion shaft 1 is supplied with additional bearings 33,

When transmitting the torque from the engine to the load, the torsion of the shaft 1 is twisted. When this occurs, the relative rotation of the sleeves 2 and 3 together with the toothed disks 5 and 6, the luminous flux of the illuminator 2 modulated by the disks 25 and 26

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photoreceivers 29 and 30 are perceived, where sequences of electrical pulses shifted in time are formed. These. the pulses through the amplifier 31 and 32 are fed to the recorder 21, the magnitude of the phase shift of the pulses is proportional to the transmitted moment. If the corner

10 the deformation of the torsion shaft 1 reaches the value S, then the contacts 14-15 or 16-17 close. A signal about this through the rings 7-9, the brushes 18-20 is fed to the recorder

15 21. In this case, the transmitted torque is perceived by the projections 10, 11 and 12, 13 of the sleeves 2 and 3 and is not transmitted to the torsion shaft 1. The bending moment both from the side of the motor 5 and from the load is perceived by the corresponding pair of bearings 4 and 33j located on the same sleeve and on the torsion shaft 1 is not transmitted.

Claims (2)

Formula inventions and 1, A device for measuring torque, including: General torsion shaft, at the ends of which in two bearings there are bushings with toothed discs, located between them a modulator, made in the form of gear-driven gears The disks between which the HC- is installed are - a light source, and two photodetectors connected to the recorder 5, characterized in that5 with the aim of increasing reliability, on the inner ends the sleeves are diametrically spaced respectively protrusions and depressions in the ring sectors; the modulator is mounted on an axis parallel to the torsion shaft, and the device is equipped with electrical contacts placed on the protrusions of the sleeves and mounted on the sleeves by electrolytic rings with fixed ones. current collector brushes associated with the recorder, 2. A device according to claim 1, characterized in that the torsion shaft is provided with two additional bearings. /; - / 26 ten 13 Editor G. Volkova Compiled by E. Shumilova Tehred M. Hoda nc Order 5987/38 Circulation 776 Subscription BNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk a emb., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FI.2 Proofreader A.T. sko