SU1149336A1 - Contact-free induction current collecting device - Google Patents

Abstract

NON-CONTACT INDUCTION TURNING DEVICE, containing a bearing, a separating shaft and a housing, moving and stationary windings. located in the magnetic cores and forming together with the nanometer the supply and measuring transformers, characterized in that, in order to simplify the design and improve the metrological properties by providing the liver with a predetermined transfer coefficient of the collector, the sub-core and the movable windings with magnetic cores are located directly on the shaft, with the bearing mounted between movable windings with magnetic cores and its outer sleeve are connected through the additionally introduced shims with the housing, in which torus installed stationary windings with magnetic cores. (L 4; oo oo 05

Description

The invention relates to a measurement technique and is intended to carry out tensometric measurements on rotating parts of a machine.

Contactless induction collector devices are known, containing movable and fixed windings located in ferrite magnetic cores and associated with a shaft and a housing (housing) with special parts, shielding elements protecting transformers formed by a pair of moving and stationary windings, and support plates that provide separation of moving and fixed parts of the device 1.

However, these devices are complex and do not provide the specified gain.

Closest to the invention is a contactless induction collector device comprising a bearing, separating shaft and housing, movable and fixed windings located in the magnetic cores and forming together with them the supply and measuring transformers 2.

However, the presence in the known special parts, connecting movable and stationary windings with the shaft and housing, of shielding elements and at least two bearing, complicates the design of the current collection device. In addition, the prior art device does not provide for the possibility of obtaining a predetermined transfer coefficient of the current collector device, and this leads to the complication of the measurement process using known devices.

The purpose of the invention is to simplify the design and improve the metrological properties by providing a predetermined transfer coefficient of the collector device.

The goal is achieved by the fact that in an induction collector device containing a bearing, separating shaft and housing, moving and stationary windings located in the magnetic cores and forming together with them the supply and measuring transformers, bearing and moving windings with magnetic cores are located directly on the shaft, and the bearing installed between movable windings with magnetic cores and its outer yoke is connected through the additionally introduced shims with a housing in which are installed izhnye winding with magnetic cores. The drawing shows the design of the proposed collector device. The device contains movable 1 and fixed 2 windings located in magnetic cores 3, which are respectively fixed on the shaft 4 and the body consisting of parts 5. The mutual rotation of the shaft 4 and the parts of the body 5 is provided with a support 6 ,. A gasket 7, placed between the part of the housing 5 and the outer race 8 of the support member B, is provided with a clearance A.

The device works as follows. The bundles of windings 1 and 2 with their magnetic cores 3 form two transformers that provide a connection between the supply and measuring diagonals of the strain gauge bridge, installed on the rotating object of study, with strain gauge equipment.

Transformer transfer coefficients depend on winding data, dimensions and material of magnetic cores 3, as well as gap A. The design of the device ensures that the specified transfer ratio of each transformer is selected by selecting the optimal gap size using a gasket 7. The bearing housing 6 separates the supply and measuring transformers, protecting them from the mutual influence of none on the other.

Placing the windings with the magnetic cores and the support, as well as the connection of the support and the housing through the shims, simplifies the design and, by providing the specified transfer coefficient of the current collection device, increases the efficiency of obtaining measurement results, since with a known transmission coefficient, the need for additional calibration is eliminated. In addition, the possibility of adjusting the transmission coefficient of the gaskets allows the manufacture of current collection devices with almost identical transmission coefficients, thereby ensuring complete interchangeability of the current collection devices.

Claims (1)

A non-contact induction current collector device comprising a bearing separating a shaft and a housing, movable and fixed windings located in magnetic circuits and forming supply and measuring transformers with them, characterized in that, in order to simplify the design and improve metrological properties by providing a given transfer coefficient of the collector devices, bearing and movable windings with magnetic circuits are located directly on the shaft, and the bearing is installed between the movable windings E with magnetic and its outer ring is linked via further imposed with the shims housing in which stationary mounted with magnetic winding.