SU1497467A1 - Apparatus for measuring effort in cable - Google Patents

Abstract

The invention relates to instrument making and can be used to determine the tension force of a cable. The aim of the invention is to improve the accuracy. The goal is achieved by the fact that the device is equipped with two elastic elements 9 with strain gauges 10 fixed to the second holder 5 with mechanical contact with a cam mounted on the third holder 11 fixed to the cable 13. The first holder 2 which is mechanically connected is fixed on the cable 13 with the second clip 5 using the housing 1. A third of the yoke 11 is located between the first 2 and second 5 yokes with a gap in the housing 1, and the second yoke has a gap relative to the cable. When a tensile force is applied to the cable, the latter is extended and the copier acts on the elastic elements with strain gauges, the output of which is proportional to the tensile force. 3 il.

Description

elastic elements 9 with tensorisers 10 mounted on the second cage 5 with mechanical contact with a cam mounted on the third cage 11 fixed on the cable 13. On the cable 13, the first cage 2, which is mechanically connected to the second cage 5, is also fixed Corps 1. Third cage 11

is located between the first 2 and second 5 cages with a gap in the housing 1, and the second cage has a gap relative to the cable. When a tensile force is applied to the cable, the latter is extended and the copier acts on the elastic elements with strain gauges, the output of which is proportional to the tensile force. 3 il.

The invention relates to the field of instrumentation and is intended for the determination of vibroconductivity in cable depreciation systems, in addition, it can be used in various parts of the national economy to determine the longitudinal forces in cables.

The aim of the invention is to improve the accuracy.

, FIG. 1 shows a device, a longitudinal section; in fig. 2 VVD B from the end of FIG. one; in fig. 3 - cross section. A-A on the cage in FIG. one.

The device consists of a housing 1, inside which at one end a holder 2 is mounted, connected to the case by screws 3 and provided with a clamping screw 4, and on the other - an additional holder 5 connected to the case 1 by screws 6 on which are fastened with screws 7 through the gaskets 8, elastic elements 9 with strain gauges 10, in the middle of the housing 1, a fastening assembly is installed in the form of a clip 11 with a copier with a conical surface, equipped with a clamping screw 12. The device is mounted on a cable 13 °

The device works as follows.

First graduated. For this purpose, a sample of the cable is taken, cut out from the cable 13, in which it is intended to determine the forces by unscrewing the clamping screws 4 and 12, install the device on the sample of the cable so that the conical surface of the node 11 touches the ends of the elastic elements 9, Then tighten the clamping elements screws 4 and 12, rigidly fastened the holder 2 and the node 11 of attachment to the cable 13 ° After that the strain gauges

0

five

0

5 0 5

0 5

connected to strain gauge

Claims (1)

When the specimen is loaded with a tensile force, the distance between the yoke 2 and the mount 1 increases by D1, respectively, the distance between the knot 11 and the additional yoke 5 decreases by the same amount, while the elastic elements 9 slide along the conical surface of the knot 11 and are bent, under the action of bending, a strain gauge effect occurs in the strain resistors 10. Having noted the instrument readings, a connection is established between its readings and the force arising on the sample of the cable. After calibration, the devices are removed from the sample and installed in the calculated location of the cable under study, and the strain gages 10 are connected to the strain gauge device. Using the results of the calibration and testing, the forces in the calculated cable cross section are determined. The invention of the device for the measured and effort. in the cable, containing two clips with attachment points to the cable, on the first of which the case is fixed, and strain gauges, distinguished by the fact that it is equipped with two elastic elements with strain gauges fixed to the kick strainer to fit the exact tee mounted on the second holder, located in the housing with a gap relative to it between the first and third yoke, which E turn is fixed on the housing with a gap relative to the cable, while the elastic elements are fixed on the third yoke symmetrically cable with mechanical contact with copier In id FIG. 2 13 FIG.