SU1504393A1 - Device for mist lubricating of rolling bearing - Google Patents

Abstract

The invention relates to mechanical engineering and is intended for the lubrication of high-speed and heavy loaded roller bearings. The purpose of the invention is to reduce vibroactivity. On the shaft 1, in front of the rolling bearing, a sleeve 2 is mounted with a multisectional permanent magnet mounted in it, assembled from separate ring magnets, for example 5 and 4, magnetized in the radial direction. Neighboring ring magnets are separated by non-magnetic gaskets. A ferromagnetic fluid 6 is placed in the gap formed by the shaft 1 and the sleeve 2. Due to the presence of significant magnetic induction gradients at the edges of the sleeve, the ferromagnetic fluid is kept in the gap. The lubricant is supplied to the cavity between the shaft 1 and the housing 7 by the source of oil mist. The shaft rotates to engage the hub 2 with blades, the direction of rotation and speed of which coincides with the speed and direction of rotation of the shaft. In the area in front of the rolling bearing, the oil mist is swirling. The device allows to improve the working conditions of high-speed and heavy loaded roller bearings and increase their durability. 1 il.

Description

The invention relates to mechanical engineering and can be used for lubrication of high-speed and heavily loaded rolling bearings.

The aim of the invention is to reduce the vibration activity of the device.

The drawing shows a device for lubricating oil mist rolling bearings.

A sleeve 2 with blades 3 is mounted on the shaft 1 in front of the rolling bearing (cage not shown) to create a vortex movement. The sleeve with blades contains a multi-section permanent magnet assembled from separate ring magnets, for example 4 and 5, magnetized in the radial direction, and the direction of magnetization of the adjacent magnets is positively spaced. The adjacent ring magnets |) are wired with non-magnetic gaskets. In the gap formed by the sleeve 2 and the shaft 1 is placed a ferromagnetic fluid 6. which, due to the presence of significant gradients of magnetic induction at the edges of the sleeve is held in the gap.

The device operates as follows.

A lubricant supply source (not shown) lubricant is supplied into the cavity between the shaft 1 and the housing 7. The shaft 1, rotating, draws a bi-tree 2 with blades 3. mounted on the shaft into rotation. Its speed and direction of rotation coincide with the speed and direction of rotation of the shaft. In the area in front of the bearing, vortex movement is imparted to the oil mist by a rotating sleeve with blades. In this case, due to the interaction of permanent magnets with the shaft through a ferromagnetic fluid, which the magnetic field holds in the gap, the sleeve with blades rotates with the shaft rotation frequency and in the same direction. Ferromagnetic fluid damps vibrations of the sleeve are caused to ^e torye its residual imbalance and attracts tiny ferromagnetic particles from which the compressed air supply line fall into oil mist. Due to the presence in the gap between the sleeve and the shaft of the ferromagnetic fluid, the vibration activity of the sleeve with the blades is significantly reduced due to its exact imbalance, as well as the vibration activity of the sub-busbar itself.

The use of a device for lubricating rolling bearings with oil mist in metal-cutting machines, as well as in other facilities containing rolling bearings with oil mist lubrication, will improve their working conditions and increase durability.

Claims (1)

Claim 25 A device for lubricating oil mist of rolling bearings, containing an oil supply source, guides for creating a vortex motion of oil mist, placed on the shaft in front of the bearing. characterized in that, in order to reduce vibration activity 30, the device is equipped with a sleeve having at least two ring magnets, the guides are fixed to the sleeve, which is mounted on the shaft with a gap, the gap being filled with ferromagnetic fluid.