SU1315789A1 - Device for measuring linear displacements - Google Patents

Abstract

The invention relates to a measurement technique and can be used to determine the movement of an object. The aim of the invention is to improve the accuracy by taking into account the direction of movement. The device contains four elastic elements 5 and 6 connected to the body 1 through the knife supports 9 and the support plates 8 and 10. In the annular protrusion 3, grooves 4 are made in which the thickened ends of the elastic elements 6 are placed, and in the elastic elements there are zi | 12, in which the pins 13 are placed. When the stem 2 is moved upwards relative to the body, the free ends of the left and right elastic elements 6 interact with the blade supports, which leads to their deflection. Due to the slits 12 of the other pair, the pair does not experience any elastic elements. When the rod moves in the opposite direction (downward), a pattern opposite to the first one is observed. The first pair of elastic elements 6 does not experience deformation, and the second generates a signal from its strain gauges. In this way, the direction of movement of the object is taken into account. 1 hp ff, 2 ill. s and s about: Cr a

Description

113

The invention relates to a measuring technique and can be used to determine the movement of an object.

The purpose of the invention is to improve accuracy by taking into account the direction of movement.

FIG. 1 shows a device for measuring linear displacements; FIG. 2 is a section A-A in FIG. one.

The device comprises a housing mounted in it a spring-loaded rod 2 with annular {protrusion 3 in the middle part. In the annular protrusion 3 parallel to the axis of the rod 2 are made the slots 4, in which the elastic elements (plates) 5 and 6 are placed with their quills, with ends 1 7 (the ends of the elastic plates, the softened B slots, are made thickened to prevent them from closing. when moving)

Opposite elastic elements 3 and 6 through the caps 8 by means of legs. ;; The supports 9 are connected to c, g, g, tpik 10 of the body. On resilient; -: strain gages 1 are glued to elements 5 and b and longitudinal slits 12 I of their thickened part are provided, through which pins 13 are drawn.

The rod 12 is made of a magnetostrictive material, has a winding 14 excitement, connected with a generator of 15 sinusoidal oscillations.

The device works as follows.

When gteremoves niTOKa 2 upward relative to the body 1, the free ends of the left and pratyuo elastic elements 5 and 6 (Fig. 1) through the 8 and 10 followers 8 and 10 interlock with knife supports 9, which leads to the deflection of these elastic elements, and therefore and strain gauges pasted on them to deformation of force 11. The signal from strain gauges is recorded by a measuring device (not shown), and due to the slits 12 of the other, no pair of elastic elements will be deformed and there will be no electrically signal from their sensors. ontsov elemr-ntov elastic rod when moving up shown in FIG. 1 in phantom).

With the passage of current through the winding 14 of the excitation connected to

the non-oscillator 15 sinusoidal oscillations, in the rod 2, mechanical oscillations occur, reducing friction.

To facilitate movement of the rod 2 along the supports of the housing 1 (when registering non-tolerances), the excitation winding 14 is connected to the generator 15 of sinusoidal oscillations.

Ø With the movement of the rod 2 downwards, the opposite pattern is observed (fig. 2). The first pair of elastic elements does not deform deformation, and the second (right and left, FIG. 2) - 15 outputs an electrical signal from its strain gauges to the measuring device.

In this way, the direction of movement of the object is taken into account.

Claims (2)

1. A device for measuring linear displacements, comprising a housing, a spring-loaded stem mounted on it with an annular projection, a winding of the extension, placed on the rod, two elastic elements with strain-gauge sensors Kat-ni placed on both sides of the rod parallel to it , and two knife supports, one ends of which are connected to the ends of the respective elastic elements, and others to the body, characterized in that, in order to increase accuracy, it is supplied by the third and fourth elastic elements, the third and fourth knife supports one ends cat These are connected respectively with the ends of the elements, and the second ends with the body, and four pins fixed on an annular protrusion perpendicular to the stem, the third and fourth elastic elements are placed in a plane perpendicular to the plane of placement of the first and second elastic elements, and at the second ends of all the elastic elements there are longitudinal slits, in each of which there is a corresponding pin. 2. Device by h. 1, characterized in that longitudinal grooves are made in the annular protrusion, in which the second ends of the elastic elements, which are made thickened, are placed. 1. A device for measuring linear displacements, comprising a housing, a spring-loaded stem mounted on it with an annular projection, a winding of the extension, placed on the rod, two elastic elements with strain-gauge sensors Kat-ni placed on both sides of the rod parallel to it , and two knife supports, one ends of which are connected to the ends of the respective elastic elements, and others to the body, characterized in that, in order to increase accuracy, it is supplied by the third and fourth elastic elements, the third and fourth knife supports one ends cat These are connected respectively with the ends of the elements, and the second ends with the body, and four pins fixed on an annular protrusion perpendicular to the stem, the third and fourth elastic elements are placed in a plane perpendicular to the plane of placement of the first and second elastic elements, and at the second ends of all the elastic elements there are longitudinal slits, in each of which there is a corresponding pin. 2. Device by h. 1, characterized in that longitudinal grooves are made in the annular protrusion, in which the second ends of the elastic elements, which are made thickened, are placed.