SU1397756A1 - Strain-gauge dynamometer for measuring transverse force - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to increase accuracy. The arrangement of the bglock 3,4 pairs towards each other so that their transverse axes form a rectangle, and the placement between the pairs of beams of the intermediate base 2 increases the stability and compactness of the dynamometer, which increases the measurement accuracy in dynamic modes. During the deformation of the elastic hinges 6 of the beams 3 and 4, the resistances of the strain transducers 8-12,14,16 change. Tension transducer connection circuits make it possible to determine the components of the bending moments of a force, which makes it possible to determine its point of application. 1 hp f-ly, 9 ill.

Description

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The invention relates to a measuring technique and can be used to create multi-component dynamometer systems, with

The purpose of the invention is to improve accuracy.

Fig. 1 shows a dynamometer for measuring lateral force; 2, when a transverse load is arbitrarily oriented in a cross section, elastic hinges 6 deform, resulting in a plane-parallel relative displacement of the bases 1 in directions perpendicular to the planes of pairs of beams 3 and 4, as well as bending

section aa in figure 1; in FIG. 3 —slothe-fO of go — deformable part, intermediate B — B in FIG. 1; Fig. 4 shows a section of the base 2; When elastic joints are deformed, 6 beams 3 and 4

Bb on -fig. one ; in fig. 5 is a view of FIG. 1; Fig. 6 is a connection diagram of strain gauges for measuring a component of the transverse force along the axis Y; Fig. 7 is a connection diagram of strain gauges for measuring the transverse force component along the Z axis; FIG. 8 is a schematic, strain gauge connections for measuring moment Mg; Fig. 9 is a connection diagram of the strain gauges for measuring the moment My ,,

The dynamometer contains rigid support bases 1 and intermediate resistances of voltage transducers 8-15 vary accordingly, and the diagrams

15, the strain gauge connections shown in FIGS. 6 and 7 produce electrical signals proportional to the magnitudes of the transverse force components acting in directions 20 perpendicular to the planes of the pairs of elastic beams and determine its full size and direction. Accordingly, the connection circuit of strain gauges, shown in FIG. 8,

2, two pairs 3 and 4 of the elastic plane-25 d, make it possible to determine the components of the co-parallel longitudinal beams, the symmetric moments of force that (with metrically spaced apart relative to the longitudinal axis and oriented perpendicular to each other. Each 4 is connected to the corresponding 30 by the base 1 and, through a rigid cantilever 5, to the intermediate base 2, which is housed in a simple

fame of the magnitude of the components of the force) makes it possible to determine its point of application.

Claims (2)

Invention Formula 1, The strain gauge dynamometer, to measure the transverse force, the content between the two pairs of beams, turn one towards the other so that in transverse section their transverse axes form a right angle (figure 4). The longitudinal beams are made with elastic hinges 6, and the intermediate base has 2 flat edges 7. On the loaded surface of the beams, in-zone elastic hinges 6. strain gauges 8-15j are placed connected in accordance with the schemes of FIG. 6, 6 and 7, and strain gauges 16-19 are placed on flat faces x 7, connected in accordance with the schemes of FIGS. 8 and 9, The placement of pairs of beams 3,4 one on; - the meeting of the other so that their transverse axes form a rectangle, and the placement between the pairs of beams of intermediate base 2 simultaneously increases the rigidity and compactness of the dynamometer, which increases the measurement accuracy in dynamic modes. The dynamometer works as follows. go - deformable part of the intermediate base 2. When elastic joints are deformed, 6 beams 3 and 4 The resistances of the voltage transducers 8-15 vary accordingly, and the circuits strain gauge connections shown in FIGS. 6 and 7 produce electrical signals proportional to the magnitudes of the transverse force components acting in directions perpendicular to the planes of the pairs of elastic beams and determine its full size and direction. Accordingly, the connection circuit of strain gauges, shown in FIG. 8, d, it is possible to determine the components of the bending moments of force, which (with d, it is possible to determine the components of the bending moments of force, which (with fame of the magnitude of the components of the force) makes it possible to determine its point of application. Invention Formula d, it is possible to determine the components of the bending moments of force, which (with 1, A strain gauge dynamometer, for measuring the transverse force, containing rigid supporting bases i, connected in series through intermediate bases with two mutually Perpendicular pairs of elastic beams with strain gauges parallel to each other, located symmetrically and parallel to the longitudinal axis of the dynamometer, differing from that, in order to improve the measurement accuracy, the intermediate base is placed between both pairs of beams, with each pair of beams connected to it from the side opposite to nnomu with this pair of support base. 2. The dynamometer according to claim 1, wherein the intermediate base is rectangular in the middle part, and the sides of the rectangle are parallel to the transverse axis of each pair of beams; In the rectangular part there are additional strain gauge transducers. , -BUT Type G  five" /, FIG. five FIG. Fig.c 7 IB / 7 FIG. at / V Js. /five Fig.d