SU621413A2 - Device for measuring distribution of tension throughout thickness of strip beilg rolled - Google Patents

Description

one

The invention relates to the rolling of metals and is a further improvement of the prior art.

Known device auth. St. No.520145 contains a series of rollers mounted on bearings on the casing, on it and on a fixed axis, magnetoelastic sensors, whose magnetic cores are rigidly connected by posts with a fixed axis, and sensitive magnetoelastic elements are made in the form of rings or plates and are attached to the end surfaces of the rollers.

This does not provide sufficient sensitivity and speed of the device, since the sensitive element perceives only a part of the deformation of the roller.

The purpose of the invention is to increase the sensitivity and speed of the device.

This is achieved by the fact that the rim and the hub of the measuring rollers are interconnected by sensitive elements of a magnetoelastic material.

A general view of the device is shown in FIG. one; in fig. 2 is a section along A-A of FIG. one.

The device comprises a frame 1 with an axis 2 rigidly fixed on it, on which, by means of bearings 3, a series of measuring rollers 4 are installed in the required quantity.

Each roller is made of a rim 5, a hub 6 and a junction, and their elements 7 are made of a magnetoelastic material, which perform the functions of a sensitive element of load sensors 8 and 9.

The magnetic cores with the coils of the load sensors are rigidly connected to the axis 2 by means of racks 10.

The knurled measuring roller has two single-sensor sensors, one of which 8, located in the loaded sector of the roller, is working. It converts the deformation of a sensitive magnetic element into an electrical signal.

The second sensor 9, located in the unloaded sector of the roller, its horizontal axis, is compensatory. The findings of the windings of the sensors 8 and 9 are passed through the longitudinal hole 11 in the axis 2.

The device works as follows.

The rolling strip, based on the measuring rollers 4, exerts a pressure on them, which is proportional to the tension of its sections, and each roller perceives the force of the zone of the strip in contact with it independently of the neighboring sections.

With 3toM, the deformation of the roller 4 together with the sensitive magnetoelastic element 7 located in the loaded sector of the roller occurs.

Due to the fact that the measuring windings of the working and compensating sensors are turned on in opposite directions, their signals add up, providing sufficient compensation for measurement errors caused by temperature fluctuations and pickups of external magnetic fields.

The set of indications of all measuring sensors provides zone control of the distribution of tension across the width of the rolled strip.

Thanks to the implementation of the sensitive element of the force-measuring sensor in the form of magnetoelastic spokes that connect the rim

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and the hub of the measuring roller, the sensitivity of measuring the tension distribution across the width of the rolled strip is significantly increased.

Claims (1)

Invention Formula A device for measuring the distribution of tension across the width of a rolled strip according to the ed. St. No. 520145, characterized in that, in order to increase the sensitivity and speed of measurement, the rim and the hub of the measuring rollers are interconnected by sensitive elements of a magnetoelastic material. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 520145, class B 21В 37/06, 1976. P