JPH0723822U - Bearing device - Google Patents

Abstract

(57) [Abstract] [Purpose] Automatically adjust the bearing metal to the proper position for the rotating shaft. [Structure] In a bearing device in which a bearing stand 4 holding a bearing metal 2 is mounted on a base stand 10, a bearing stand height adjusting device 13 is interposed between the bearing stand 4 and the base stand 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bearing device that effectively adjusts the height of a bearing stand.

[0002]

[Prior art]

 For example, in a bearing device used for thermal power generation or the like, as shown in FIG. 3, an oil film 2 is formed on the bearing metal 3, and the wedge effect of the oil film 2 supports the rotary shaft 1 to stabilize the rotational motion. It is trying to make it. The bearing metal 3 has a shim 12 in its lower half and is held by a bearing base 4, which is directly mounted on a base 10.

In the bearing device having such a configuration, conventionally, the operation of the rotary shaft 1 is extremely important from the viewpoint of vibration suppression, and various countermeasures have been taken. For example, when stabilizing the rotational movement of the rotary shaft 1 when the wedge effect of the oil film 2 is not sufficient, the thickness of the shim 12 interposed between the bearing metal 3 and the bearing base 4 is changed to replace the bearing. The gold 3 was centered so that the rotary shaft 1 could be stably rotated.

[0004]

[Problems to be solved by the device]

 However, the replacement work of the shim 12 is a trial and error work and requires a lot of labor for the worker. In this replacement work, the thickness of the shim 12 is empirically determined and selected, and if there is an error in this selection, the rotating shaft 1, bearing metal 3, bearing block 4, etc. are disassembled and re-assembled each time. Assembling is taking place, which causes many obstacles for restarting bearing operation. For this reason, workers have been demanding automatic adjustment measures for the bearing device.

This invention has been improved in consideration of the above point, and discloses a bearing device that automatically adjusts the height of a bearing stand so that a stable rotary motion can be given to a rotary shaft. The purpose is to

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a bearing device according to the present invention is, in the bearing device in which a bearing stand for holding a bearing metal is mounted on a base stand, as described in claim 1, a bearing stand and a base stand. A bearing stand height adjusting device is interposed between the two.

[0007] Specifically, as described in claims 2 and 3, this bearing stand height adjusting device incorporates a bearing support part and a pair of wedge pieces housed in a guide casing, A drive motor is provided on the wedge piece.At that time, the bearing base advances and retracts one wedge piece by the drive motor, and at the time of advancing and retracting, the slope of the wedge piece is used to move the remaining one wedge piece. The height is adjusted by moving it up and down.

Further, the bearing stand height adjusting device has a pair of wedge pieces directly provided on the bearing stand as described in claim 4, while the bearing support section for holding the bearing stand is provided on the guide casing. It is preferable to sandwich them.

[0009]

[Action]

 In the above structure, when the bearing device advances and retracts one wedge piece by the drive motor, the remaining one wedge piece slides through the slope, and the sliding allows the bearing stand to move up and down.

Therefore, as in the conventional case, it is possible to automatically adjust the proper centering position of the bearing base with respect to the rotating shaft without trial and error and without the labor of an operator. Also, in the bearing stand height adjustment device, the bearing column that holds the bearing stand is sandwiched between the guide jackets, so when repairing the wedge piece, simply remove the guide jacket and repair the wedge piece. Is easy and convenient.

[0011]

【Example】

 An embodiment of a bearing device according to the present invention will be described below with reference to the drawings. The same components as those in FIG. 3 will be described with the same reference numerals. FIG. 1 is a schematic view of a bearing device according to the present invention.

The rotating shaft 1 is supported by a bearing metal 3 via an oil film 2. The bearing metal 3 is held by the bearing base 4. Below the bearing stand 4, a bearing stand height adjusting device 13 is provided together with a base stand 10. The bearing stand height adjusting device 13 includes an outer cover 6, a bearing support 5, an upper wedge 7, a lower wedge 8, and a drive motor 11. In other words, the upper wedge 7 and the lower wedge 8 face their inclined surfaces directly below the bearing strut 5, and the surface where the upper wedge 7 contacts the bearing strut 5 and the lower wedge 8 contact the base 10. The faces are arranged so that they are horizontal. A drive motor 11 is provided on the lower wedge 8 via a drive shaft 9.

According to the bearing device configured as described above, the inclined surfaces of the upper wedge 7 and the lower wedge 8 which are arranged to face each other slide on each other, so that the height of the bearing base 4 is continuous. Therefore, the proper position of the rotary shaft 1 with respect to the bearing metal 3 can be effectively adjusted.

As described above, in the present embodiment, the upper wedge 7 and the lower wedge 8 arranged below the bearing support 5 have their inclined surfaces opposed to each other, so that the lower wedge 8 is driven by the drive shaft 9. The upper wedge 7 is moved in the vertical direction by the driving force of the drive motor 11 via the. As a result, the bearing support 5 mounted on the upper wedge 7 moves vertically along the guide jacket 6. In this way, the height of the bearing metal 3 with respect to the rotary shaft 1 can be effectively changed.

FIG. 2 is a schematic view showing another embodiment of the bearing device according to the present invention. In this embodiment, the upper wedge 7 and the lower wedge 8 are directly provided on the bearing base 4, while the bearing support 12 for holding the bearing base 4 is sandwiched between the guide casings 6. According to the bearing device configured as described above, repairing the upper wedge 7, the lower wedge 8 and the like can be easily performed only by removing the guide jacket 6.

[0016]

As described above, according to the bearing device of the present invention, since the bearing stand height adjusting device is provided, it is possible to automatically adjust the proper position of the bearing metal with respect to the rotating shaft. . In addition, since the bearing support provided on the bearing stand is sandwiched between the guide casings, removing the guide casing has the effect of facilitating repair and inspection of the wedge pieces.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a bearing device according to the present invention.

FIG. 2 is a schematic view showing another embodiment of the bearing device according to the present invention.

FIG. 3 is a schematic view showing a conventional bearing device.

[Explanation of symbols]

 1 rotating shaft 3 bearing gold 4 bearing base 5 bearing support 6 guide jacket 7 upper wedge 8 lower wedge 10 foundation stand 11 drive motor 13 bearing stand height adjuster

Claims (4)

[Scope of utility model registration request] 1. A bearing device for mounting a bearing stand for holding a bearing metal on a base stand, wherein a bearing stand height adjusting device is interposed between the bearing stand and the base stand. 2. The bearing stand height adjusting device is characterized in that a bearing support part housed in a guide casing and a pair of wedge pieces are incorporated, and one wedge piece is provided with a drive motor. The bearing device according to item 1. 3. The height of the bearing base is adjusted by advancing and retracting one wedge piece by a drive motor and moving the remaining one wedge piece up and down using a slope at that time. The bearing device according to claim 1 or 2. 4. The bearing stand height adjusting device has a pair of wedge pieces directly provided on the bearing stand, while a bearing support section for holding the bearing stand is sandwiched by a guide casing. The bearing device according to claim 1 or 2.