KR19990032510U - Bearing wear detector - Google Patents

Abstract

Bearing wear detection device is disclosed.

The disclosed bearing wear detection apparatus includes a rotating shaft supported by a bearing in a predetermined rotating body and installed to be rotatable; A detection ring installed in contact with the rotating shaft on one side of the bearing; A conductive disk installed to be in contact with the outside of the detection ring; A lead attached to the conductive disk; It is characterized in that it comprises a; insulating material which is installed outside the conductive disk, can be mounted to the housing in which the bearing is installed.

According to the present invention, there is an advantage that it is possible to replace the appropriate bearing by warning the wear state of the bearing.

Description

Bearing wear detector

The present invention relates to a bearing wear detection device, and more particularly, to a bearing wear detection device that enables a proper replacement time of the bearing.

In the case of rotors such as generators and motors, maintenance of wear on bearings supporting rotation of the shaft is important. Bearing wear is a fatal defect in the rotating body, so preventive maintenance is very important. In most cases, preliminary replacement is required in consideration of the stability rate. Such maintenance inevitably involves excessive maintenance, resulting in a decrease in maintenance efficiency.

In addition, generators, motors, and the like used in vehicles or airplanes lose their original functions in a moment when the bearings are worn, and at the same time, they may seriously affect the output of engines, which are power sources.

Therefore, in the existing equipment, a regular preventive maintenance cycle was set and preventive maintenance was performed regardless of the age of the bearing. In this case, in many cases the bearings are still available enough to be replaced, resulting in costly and time-consuming losses.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bearing wear detection device capable of appropriate replacement of a bearing while warning a wear state of the bearing.

1 is a schematic view of a bearing wear detection apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

11. Rotating shaft

12. Detection ring

13. conductive disc

14. Lead

15. Insulation material

Bearing wear detection apparatus of the present invention to achieve the above object, the bearing is supported by a bearing in a predetermined rotating body, the rotating shaft is installed to enable rotational movement; A detection ring installed in contact with the rotating shaft on one side of the bearing; A conductive disk installed to be in contact with the outside of the detection ring; A lead attached to the conductive disk; It is characterized in that it comprises a; insulating material which is installed outside the conductive disk, can be mounted to the housing in which the bearing is installed.

In the present invention, the conductive disk is installed on the stator of the rotor, the inner diameter of the detection ring is larger than the inner diameter of the bearing, the detection ring is preferably installed on the rotor of the rotor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic cross-sectional view of a bearing wear detection device according to the present invention.

Referring to the drawings, the bearing wear detection apparatus 10 is supported by a bearing (not shown) of a bearing assembly in a rotating body such as a generator and a motor, and is provided on a side of the bearing with a rotating shaft 11 installed to be rotatable. A detection ring 12 which is installed in contact with the rotating shaft 11, a conductive disk 13 fixed to a stator (not shown) outside the detection ring 12, and attached to the conductive disk 13. Including the lead 14 and the insulating material 15 to be mounted to the housing (not shown) that is the casing so that the bearing wear detection device 10 according to the present invention can be installed outside the conductive disk 13. Is done.

Bearing wear detection device 10 according to the present invention configured as described above, when the bearing is worn by a long time operation, the gap between the detection ring 12 and the conductive disk 13 is reduced and detected when worn over a predetermined level The ring 12 is brought into contact with the conductive disk 13, by which the change in impedance between the detection ring 12 and the conductive disk 13 is detected using the leads 14 attached to the conductive disk 13. This can warn of wear on the bearings.

The conductive disk 13 has an electrical conductor disk in the insulating layer and attaches a detection ring 12 to a rotor (not shown) to detect wear of the bearing. The inner diameter of 12) is slightly larger than the normal inner diameter of the main bearing (not shown). Therefore, the shaft does not contact the detection ring 12 unless the bearing is significantly damaged.

In addition, the detection ring 12 is connected to a large resistor is continuously monitored by a control circuit. When the internal clearance of the main bearing is increased by a certain level or more, the detection ring 12 contacts the conductive disk 13. This contact signal is detected by an external resistance indicating that the bearing needs to be replaced. By using this detection circuit, it is possible to reduce the preventive maintenance of the bearing, so that the wear of the bearing is detected in a device supporting the shaft by a bearing such as a generator, a motor, and the like, and defects are detected in advance to enable maintenance.

Bearing wear detection apparatus according to the present invention as described above has the following effects.

The disc-shaped detection ring is installed between the bearing assemblies in the adjacent part of the main bearing so that if the bearing wears out to a certain level, the rotating shaft contacts the detection ring, warning the wear of the bearing and allowing the proper replacement of the bearing.

Therefore, it has the advantage of minimizing the loss due to uniform preventive maintenance and preventing the occurrence of unexpected failures.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (4)

A rotating shaft supported by a bearing in a predetermined rotating body and installed to be rotatable; A detection ring installed in contact with the rotating shaft on one side of the bearing; A conductive disk installed to be in contact with the outside of the detection ring; A lead attached to the conductive disk; And an insulating material installed outside the conductive disk and mounted to a housing in which the bearing is installed. The method of claim 1, The conductive disk is bearing wear detection device, characterized in that installed on the stator of the rotating body. The method of claim 1, An inner diameter of the detecting ring is larger than the inner diameter of the bearing. The method of claim 1, The detection ring is a wear wear detection device, characterized in that installed on the rotor of the rotating body.