SU1606884A1 - Strain-gauge dynamometer - Google Patents

Abstract

The invention relates to a measurement technique and can be used in the development of multi-component dynamometers for aerodynamic weights. The aim of the invention is to improve the measurement accuracy. The dynamometer contains two support bases and two intermediate bases, which are located between the support bases and parallel. Two pairs of bending elastic beams are located diametrically in two mutually perpendicular planes. Each pair of beams is located respectively between the support base and the intermediate one closest to the other support base. Strain gages, glued to the elastic beams, are connected in bridge circuits, with which the transverse moments are measured. Each intermediate base is made in the form of two annular sectors, the middle of which is connected to beams working in bending. The ends of the sectors of the two bases are connected by four elastic beams. The strain gages pasted on them provide torque measurement. Projections are provided on the support bases for leveling the length of the elastic beams. 8 il.

Description

This invention relates to measurable. It can be used in the development of multicomponent dynamometers for aerodynamic weights.

The purpose of the invention is to improve the measurement accuracy.

FIG. 1 shows a device, longitudinal view; in fig. 2 is a view of C in FIG. 1, in FIG. 3 is a section A-A in FIG. 1, in FIG. 4 - section NB in FIG. one; in fig. 5 is a sectional view BB in FIG. 1, in FIG. 6-8 are connection diagrams of strain gauges.

The device contains support bases 1, 2 located between them.

and parallel to them the intermediate bases 3, 4. The supporting base 1 and the intermediate base 3 are interconnected by elastic beams 5,6. The support base 2 and the intermediate base 4 are connected by a broom by elastic beams 7.8. The intermediate bases 3, 4 are connected to each other by four elastic beams 9. Each intermediate base is made in the form of two annular sectors, the middle of which is connected to one of the elastic beams 5-8. The ends of the sectors of the two intermediate bases are interconnected by elastic beams 9. STANDS 10 are made on the bases 1, 2

SP)

ba

For snoring, neither is the length. vg, ex elastic fiajioK. On the elastic beams are glued

Tension Sensors:

R. R,

on the beams

5.6; R R n beams 7,8; Rg - R, - on four beams 9. Tenzorezis-mountains are connected in the corresponding bridge schemes.

The device works as follows.

When subjected to lateral force along the axes Y, Z, the beams bend. The strain gauges pasted on them are deformed, the indications about the value of bending moments MU, N7 are taken from the bridges (Fig. 7.8)

Claims (1)

which torque M) (support bases 1,2 rotate mutually, four elastic beams 9 are twisted, strain gages Rg - R are deformed ;, the readings are taken from the measuring bridge (Fig. 6) MX torque. Formula of the invention Strain gage dynamometer containing two support bases. there are 2n between them and in parallel with them two interconnected intermediate bases, two pairs of elastic beams working in a bend and located diametrically in two at most perpendicular planes of elastic beams, each pair of which is connected respectively with one of the supporting bases Q Scientific research institutes and intermediate bases adjacent to another supporting base, which are characterized by the fact that, in order to improve the accuracy of the measurement, each intermediate base is made in the form of two ring sectors. When connected to the ends with adjacent sectors, four elastic beams, evenly spaced around the circumference, while at the ends of the supporting 2Q bases are made protrusions equalizing the lengths of all elastic beams, and elastic beams working on a bend connect the middle of the ring sectors and these protrusions on the supporting bases, A l 7 R8Ri09 3 2 I I I I / P | 5 Ah & 1 by Lf. it 6 6  / R9KZ 5 b 2. FIG. 2 AR7 I Phases. five cpuz yy cpu2. eight