RU2648U1 - DYNOMETRIC SENSOR - Google Patents

Abstract

1. A torque gauge containing two posts, connected at the ends by two traverses with elastic joints, and in the middle by a central traverse with strain gauges, characterized in that the central traverse is connected to the posts by elastic joints on which the strain gauges are fixed. 2. The sensor according to claim 1, characterized in that the elastic hinges of the central beam are made in the form of beams of equal resistance.

Description

DSAMOZHTRICHESKIY DETAJ

Useful, the model relates to a weighing technique and can be used in the manufacture of scales and scalesBos dispensers.

Known dynamometer sensor according to the application of Japan J 61-48647, KL.901 & 3/14, containing an elastic parallelogram formed by struts and traverses, and strain gauges mounted on traverses from the outside.

Also known is a weighing device according to AS 1 I5328I9, class EOTB-3/14, containing a force sensor made in the form of two posts connected at the ends by two traverses, and in the middle by a central traverse of constant cross section, at the ends of which with strain gages are fixed on both sides.

The disadvantages of the known sensors are low sensitivity, large non-linearity of the signal and, as a consequence, low accuracy, because On the one hand, more rigidity of the sensor component is required, which allows good noise immunity, and on the other hand, it is necessary to have large linear deformations at the attachment points of the strain gages, to ensure high sensitivity of the sensor.

The essence of the utility model consists in the fact that in a dynamometric sensor containing a rack, connected at the ends by two, traverses with elastic joints, and in the middle - by a central traverse with strain gauges, the central traverse is connected with stable elastic joints on which the strain gauges are fixed. In addition, the elastic joints of the central beam are made in the form of beams of equal resistance.

-J, 0G / 06G

eota 3/14

S-rw

The inventive utility model allows to increase the accuracy of weighing by obtaining the maximum deflections of the sections of the traverses on which strain gages are fixed while maintaining sufficient rigidity of the sensor structure as a whole.

The utility model is illustrated by the drawing, which shows: Fig. T general view of the device; figure 2 is a section bB in fig.T fig.Z section aa in fig.T

The device contains two struts I (Fig. 1), connected at the ends by two traverses 2 with elastic hinges 3, and in the middle by a central traverse 4. The central traverse 4 is connected to the struts I by elastic hinges 5 (Fig. 2), on which strain gages are fixed 6. The elastic hinges 5 (Fig. T) of the central beam 4 are made in the form of an equal resistance block 7 (Fig. 2).

The device operates as follows. When applying force to the load cell. P (Fig. T), it is deformed in elastic hinges on which strain gages 6 (Fig. 3) are glued, connected to a bridge circuit. The mismatch signal is reregistered. To reduce non-linearity

the mismatch signal, the elastic hinges 5 of the central beam 4 (Fig. T) are made in the form of beams of equal resistance 7 (Fig. 2). Head of Patent Services Hux l ---

U.C.TP - G.V. Shkolaev

Claims (2)

1. A torque sensor containing two posts connected at the ends by two traverses with elastic joints, and in the middle by a central traverse with strain gauges, characterized in that the central traverse is connected to the posts by elastic joints on which the strain gauges are fixed.  2. The sensor according to claim 1, characterized in that the elastic hinges of the central beam are made in the form of beams of equal resistance.