JPH0481736B2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] This invention accurately detects and continuously records the amount of thermal strain in a bearing housing of a rotating machine that supports the bearing, and the temperature in synchronization with this. The present invention relates to a detection device that uses this data to separately calculate the force acting on the bearing as the temperature changes in the bearing housing, predicts the life of the bearing, and analyzes the operating conditions that affect the temperature change.

[Prior art and its problems]

The amount of thermal strain in the bearing housing that supports the bearing was generally measured using a strain gauge, but
This method has disadvantages in that it is difficult to correct temperature, resulting in low measurement accuracy and inability to measure in relation to temperature.

[Object of the Invention] In order to eliminate the above-mentioned drawbacks, the present invention provides a heat treatment system for a bearing housing in which the amount of thermal strain in the bearing housing can be correlated with temperature, detected with high accuracy, and continuously recorded. The purpose of the present invention is to provide a strain detection device.

[Key points of the invention]

In order to achieve the above object, the present invention provides an electric micrometer equipped with a pair of left and right displacement measuring elements installed on a horizontal line passing through the center of the end face of a cylindrical bearing housing, and a detection element that engages with the displacement measuring elements; It consists of a temperature measuring element installed near the measuring element mounting position on the end face of the bearing housing, and an X-Y recorder connected to the micrometer and the temperature measuring element. It is supported by a support that is independent of the bearing housing.

[Embodiments of the invention]

1 and 2 show an embodiment of the present invention, in which a pair of left and right displacement measuring elements 2 are mounted on a horizontal line passing through the center of the end face of a cylindrical bearing housing 1 that supports a bearing (not shown). A temperature sensing part of the thermoelectric temperature sensing element 3, such as platinum, copper, nickel, or a thermistor, is embedded and installed in the vicinity of the mounting position with an electrical insulator such as resin. The temperature measuring element 3 is X
- It is connected to the Y recorder 4 so that the detected temperature can be continuously recorded. X-Y recorder 4
Further, an electric micrometer 6 having a detection element 5 that engages with the measuring element 2 is connected so that the displacement detected by the detection element 5 can be continuously recorded in synchronization with the detected temperature of the bearing housing 1. It's summery. A vertical surface 2a is provided at the engagement portion of the sensing element 2 with the sensing element 5, and the sensing element 5 is connected to the bearing housing 1.
It is supported by a base plate 8 via a support 7 independent from the base plate 8, so that the tip thereof is brought into contact with the vertical surface 2a.

According to the above embodiment, the measuring element 2 is provided in pairs on the left and right in the horizontal direction with the engagement portion with the detection element 5 being vertical, and the detection element 5 is independently supported, so that the vertical and horizontal directions of the entire rotating machine are The amount of thermal strain of the bearing housing 1 can be detected by removing the influence of displacement.

〔Effect of the invention〕

According to the present invention, in a thermal strain detection device for a bearing housing, a pair of probes having vertical surfaces for measuring radial displacement are mounted on the horizontal line passing through the center of the end face of the cylindrical bearing housing on the left and right sides, and near the mounting position. A temperature sensing element is attached to the bearing housing, and the detection element of an electric micrometer supported independently of the bearing housing is brought into contact with the vertical surface, and the amount of thermal strain of the bearing housing detected is correlated with the temperature.
Since continuous recording can be performed using the Y recorder, the accuracy of detecting the amount of thermal strain has been improved, and the service life of the bearing can be predicted by linking it to the operating conditions, including the supply of lubricating grease to the bearing, through separate calculations. You can get the effect that you can.

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram of an embodiment of this invention;
The figure is an enlarged perspective view of the main part of FIG. 1. 1... Bearing housing, 2... Gauge head, 2a...
... Vertical surface, 3 ... Temperature measuring element, 4 ... X-Y recorder, 5 ... Detection element, 6 ... Electric micrometer, 7 ... Support tool.

Claims (1)

[Claims] 1. An electric micrometer equipped with a pair of left and right displacement probes installed on a horizontal line passing through the center of the end face of the cylindrical bearing housing, and a detection element that engages with the displacement probes, and mounted near the probe mounting position on the end face of the bearing housing. It consists of a temperature measuring element, and an X-Y recorder connected to the electric micrometer and the temperature measuring element, the measuring element is provided with a vertical surface that comes into contact with the detecting element, and the detecting element is supported by a support independent of the bearing housing. A thermal strain detection device for a bearing housing, characterized in that: