SU1564510A1 - Apparatus for detecting disturbances of oil film on sides and surfaces of rolling in rolling bearing - Google Patents

Abstract

The invention relates to the bearing industry, in particular, to a technique controlling the operation of a rolling bearing. The purpose of the invention is to increase the efficiency of monitoring the condition of the oil film in rolling bearings. The device contains a source of alternating voltage, three current collectors, a recording device. Two additional current collectors are introduced into the device to connect a voltage source to the sides of the ring. Additional current collectors are connected in parallel with two existing current collectors to one pole of the voltage source, and the third current collector is connected to the other pole of the source. The recording device is connected between the third current collector and four current collectors connected in parallel. The device makes it possible to detect the rolling film being pushed by the rolling body along the inner and outer rings, on the left and right sides in various combinations, separately, as well as in all the listed places together. 1 il.

Description

The invention relates to the bearing industry, in particular, to a technique controlling the operation of a rolling bearing.

The aim of the invention is to increase the efficiency of monitoring the condition of the oil film in a rolling bearing.

The drawing shows the proposed device, a General view.

The device comprises a shaft 1 with a test bearing 2, a separator 3, a bracket 4, a mercury current collector 5, a needle current collector 6, a mercury current collector 7, an alternating voltage generator 8, a loop oscilloscope 9,

resistors 10-13, the bracket 4 being mounted on the separator 3. bearing 2 and connected to the mercury current collector 5 and the needle current collector 6, an alternating voltage generator 8 which is connected to the rolling surface of the outer ring through a resistor 10 at one output end 12 and 13 - with the sides of the ring, through the resistor 11 - with the inner ring of the bearing, and the other output end through the current collectors 5 and 6 - with the rolling body. An oscilloscope with one channel (loop) is connected to a roller electric circuit - the rolling surface of the outer ring, second and

SP

2

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3 15

.The fourth channel - in the chain roller - the sides of the ring, and the third channel - in the chain roller - inner ring.

The device works as follows.

The generator 8 generates an alternating electrical voltage of so small amplitude that the oil on the film is not punctured by electrical discharge and a frequency depending on the measurement target and the capabilities of the recording equipment. If during the operation of the bearing (drive, driving shaft 1 in rotation, not shown in the figure) the metal contact between the roller and the ring rolling surfaces, as well as between the roller and the flanges of the ring did not occur, all electrical circuits are broken by an oil film and all four channels of the oscilloscope 9 register sinusoids corresponding to the frequency and amplitude of the electrical voltage generated by the generator 8.

When a metal contact occurs between the roller and, for example, the inner ring, the circuit (generator - roller - inner ring) becomes - and the third channel of the oscilloscope 9, connected in parallel to the circuit, conducts a short circuit. When a metallic contact appears between the roller and the beads, between the roller and the rolling surface of the outer ring, the corresponding circuits also become current, and the first, second, and fourth channels of the oscilloscope also

registers a short circuit.

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104

Pushing the oil film between the roller and the sides of the rings reduces the durability of the bearings, wears the sides and torn rollers, which causes the rollers to turn in the separator window and removes the bearing from the system. The timely detection of forcing allows to eliminate it in time and thereby increases the service life of the bearings.

Ula Invention Form

An apparatus for detecting oil film irregularities along the sides and rolling surfaces in a roller bearing, comprising an alternating voltage source, a recording device and three current collectors for connecting an alternating voltage source to the shaft, bearing outer ring and rollers, the first and second current collectors being connected parallel to one voltage source pole, the third current collector to its other pole, and the registering device is connected between the third current collector and each of the two parallel-connected openers, characterized in that, in order to increase control efficiency, it is equipped with two additional current collectors for connecting a voltage source to the sides of the ring electrically insulated from the ring, with the additional current collectors connected in parallel to the first two current collectors, and the recording device is connected between the third current collector and each of four parallel connected current collectors.

Claims (1)

FIELD OF THE INVENTION A device for detecting violations of an oil film on the flanges and rolling surfaces in a roller bearing, comprising an AC voltage source, a recording device and three current collectors for connecting an AC voltage source to the shaft, the bearing outer ring and rollers, while the first and second current collectors are connected parallel to one pole of the voltage source, the third current collector to its other pole, and the recording device is connected between the third current collector and each of the two parallels the current collectors, characterized in that, in order to increase the control efficiency, it is equipped with two additional current collectors for connecting the voltage source to the sides of the ring, electrically insulated from the ring, and additional current collectors are connected in parallel to the first two current collectors, and a recording device is connected between the third current collector and each of four current collectors connected in parallel.