JPS6311385Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bearing equipped with a device for detecting an abnormal condition such as co-rotation of the bearing metal.

In the case of conventional bearings, even if the bearing metal fitted into the bearing hole seizes due to lack of lubricating oil or rotates with the shaft due to foreign matter, etc., there is a means to automatically detect abnormal conditions of the bearing. I stopped talking. Therefore, the abnormal situation cannot be detected by human senses until the abnormality in the fitting part of the bearing has worsened to a considerable extent and the bearing generates abnormal noise or changes in engine speed, output, etc. However, relying on human senses is not only unreliable, but also causes damage to the bearings of equipment that is operated unattended, such as generators and compressor engines, to be noticed too late, resulting in greater damage. This could lead to engine damage.

The present invention solves the above-mentioned problems with conventional bearings, and is a means to automatically and quickly detect this abnormal situation when the bearing metal rotates with the shaft due to seizure or some other cause. The purpose is to share bearings with internal components. The gist of the present invention configured to achieve this purpose is to provide a reed switch embedded in the inner circumferential wall of the bearing body, and a reed switch embedded in the outer circumferential wall of the bearing metal fitted into the shaft hole of the bearing. The bearing is equipped with an abnormality sensing device consisting of a magnet embedded in the bearing.

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view of a split bearing that has been widely used in the past. The bearing 1 consists of a bearing stand 2 and a bearing cover 3, each having a semi-cylindrical recess forming a bearing hole, and both are fixed with stud bolts. A recess is cut into the inner peripheral edge of the semi-cylindrical recess of the bearing lid 3, and a magnetic reed switch 11 is embedded therein so as not to protrude from the inner peripheral wall. The lead wire 12 connected to the reed switch 11 is connected to the bearing cover 3 as shown in FIG.
It extends to the outside of the bearing 1 through a groove 8 formed at the joint with the bearing stand 2. In addition, the lead wire 12
may be extended to the outside of the bearing 1 through holes 9, 9' formed in the bearing cover 3, as shown in FIG. 3B.

A split bearing metal 4 is fitted into the shaft hole of the bearing 1. The metal piece 4 consists of two semi-cylindrical metal pieces 4a and 4b, the metal piece 4a is fitted into the semi-cylindrical recess of the bearing cover 3, and the metal piece 4b is fitted into the corresponding recess of the bearing stand 2, respectively. . metal piece 4b
A recess is provided in the outer circumferential wall of the bearing lid 3 at a position suitable for a reed switch 11 embedded in the inner circumferential edge of the bearing cover 3, and a magnet 13 is embedded therein.

Next, the operation of this embodiment configured as described above will be explained. As shown in FIG. 1, when the bearing metal 4 is in the normal position, the reed switch 11 and the magnet 13 are located opposite each other, so the reed switch 11 is in the magnetic field of the magnet 13, and the reed switch 11 is in the magnetic field of the magnet 13. Switch 11 is ON, which means I am impressed. When the bearing metal 4 rotates with the shaft 6 due to seizure or other causes, the magnet 13
Since the position of is also changed, the reed switch 11 is out of the magnetic field, and the reed switch 11 is turned OFF, that is, opened. Therefore, if a stop device for a machine such as an engine is connected to this reed switch 11, the synchronization of the bearing metal 4 can be automatically sensed and the machine can be automatically stopped immediately.

The present invention is not limited to the above embodiments,
Of course, the reed switch and the magnet may be installed inside the bearing stand, and a single bearing may be used instead of a split bearing.

As described in detail above, according to the present invention, the mutual rotation of the bearing metal can be detected automatically and quickly, thereby making it possible to prevent damage to the bearing portion.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention, and is a sectional view of a split bearing equipped with a co-rotation sensing device of the bearing metal, and Fig. 2 shows the positional relationship between the reed switch and the magnet due to the co-rotation of the bearing metal. A sectional view of the split bearing, and FIGS. 3A and 3B are partial sectional views showing the extended state of the lead wire connected to the reed switch. 1...Bearing, 4...Bearing metal, 11...Reed switch, 13...Magnet.

Claims (1)

[Scope of utility model registration request] An abnormality sensing device is installed internally, which consists of a reed switch embedded in the inner peripheral wall of the bearing body, and a magnet embedded in the outer peripheral wall of the bearing metal fitted into the shaft hole of the bearing at a position corresponding to the reed switch. bearing.