JP2000046045A - Can-inside bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prolong the exchange cycle of a bearing while freely adjusting a clearance of the bearing by forming a bearing inner surface and a sleeve outer surface as a counterpart surface of the bearing inner surface into a tapered shape having the same taper in relation to an agitating shaft. SOLUTION: A bearing 1 inner surface and a sleeve 2 outer surface are formed with the same taper in relation to an agitating shaft 3, and in order to secure a clearance in each contact surface, the bearing 1 is fixed to a bearing box 4 by an upper flange 5 and a lower flange 6. A contact surface of the bearing is worn by the operation of an agitator, and in the case where continuous use is impossible as a result of the measurement of the quantity of friction, a lower bolt 8 for connecting the lower flange 8 to the bearing box 4 is loosened, and an upper bolt 7 for connecting the upper flange 5 to the bearing box 4 is fastened so as to displace the bearing 1 downward, and a clearance between the inner surface of the bearing 1 and the outer surface of the sleeve 2 is thereby adjusted so that the bearing 1 worn in the real condition can be continuously used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device in a can which is effective for a bearing device of a rotating shaft and has a structure which can be used for a long time without replacing the bearing even if the contact surface of the bearing is worn. Things.

[0002]

2. Description of the Related Art In a conventional in-can bearing device, when the contact surface of the bearing is worn by operation of a stirrer or the like, the amount of the wear is measured, and when use becomes impossible, the bearing device is disassembled. The work of replacing bearings with new ones is performed periodically. Depending on the contents of operation of the stirrer or the like, the cycle is considerably short, which affects the production of the product. The related technology of this type is disclosed in
There is a shaft sealing device described in Japanese Patent No. 117163.

[0003]

SUMMARY OF THE INVENTION A bearing device in a can which can extend the replacement cycle of the bearing by improving the bearing structure to replace the bearing in a short period of time, which has been a problem in the prior art, is proposed. The purpose is to provide.

[0004]

In order to achieve the above object, a bearing inner surface which is a wear surface of a bearing and a sleep outer surface which is a counterpart of the bearing inner surface are formed to have the same taper with respect to the stirring shaft. I do. Thus, when the inner surface of the bearing is worn, the relative position between the bearing and the sleeve in the axial direction is changed to manage the gap between the inner surface of the bearing and the outer surface of the sleeve.

[0005] By moving the bearing in the axial direction as described above and managing the gap between the inner surface of the bearing and the outer surface of the sleeve, the bearing can be used without being replaced with a new bearing.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG.

FIG. 2 is a schematic view of a rigid stirring device having a bearing device 5 at the center of the rotating shaft. 1 and 3 are enlarged views of the bearing device 5 of FIG. In these bearing devices, the inner surface of the bearing 1 which is the wear surface of the bearing 1 and the outer surface of the sleeve 2 which is the mating side of the inner surface of the bearing 1 are formed so that the stirring shaft 2 has the same taber. The bearing 1 is fixed to the bearing box 4 by an upper flange 5 and a lower flange 6.

Conventionally, when the contact surface of a bearing is worn by operation of a stirrer or the like, the bearing device 5 measures the amount of wear. When the bearing device 5 cannot be used, the bearing device 5 is disassembled. The operation of replacing the bearing 1 with a new one is periodically performed.

The present invention is characterized in that the wear surface of the bearing 1 is reduced, and an optimum structure is provided which allows the bearing 1 to be used without being replaced even if it needs to be replaced.

This structure will be described with reference to FIG. The inner surface of the bearing 1 and the outer surface of the sleeve 2 are manufactured with the same taper with respect to the stirring shaft 3, and in order to secure a clearance at each contact surface,
Are fixed at the bearing box 4 by an upper flange 5 and a lower flange 6.

When the contact surface of the bearing is worn by the operation of the stirrer or the like, and the amount of wear is measured and the continuous use becomes impossible, the lower flange 6 and the bearing box 4 are connected. By loosening the lower bolt 8 and inserting the upper bolt 7 connecting the upper flange 5 and the bearing box 4, the bearing 1 is displaced downward to control the gap between the inner surface of the bearing 1 and the outer surface of the sleeve 2, thereby reducing wear. Current bearing 1
Can be used continuously.

Next, the contents of the embodiment shown in FIG. 3 will be described.
If it is impossible to move the bearing 1 downward due to the environment around the bearing device 9, it is also possible to move the bearing 1 upward as in this structure.

[0013]

According to the present invention, even if the amount of wear of the bearing exceeds the specified value, the bearing can be continuously used without being replaced with a new one. Further, as compared with the conventional bearing structure, the wear surface has a tapered structure, so that a large surface area of the wear surface can be secured, and the progress of wear can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a bearing in a can according to the present invention.

FIG. 2 is a cross-sectional view showing a basic configuration of a two-point supported hard stirrer.

FIG. 3 is a sectional view showing another embodiment of the in-can bearing according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bearing, 2 ... Sleeve, 3 ... Stirring shaft, 4 ... Bearing box, 5 ... Upper flange, 6 ... Lower flange, 7 ... Upper bolt,
8 Lower bolt, 9 Bearing device, 10 Stirring blade, 11 Bearing support, 12 Container.

Continued on the front page (72) Inventor Takumi Tanaka 794, Higashi-Toyoi, Katsumatsu-shi, Yamaguchi Prefecture F-term in the Kasado Plant of Hitachi, Ltd. (reference) 3J011 AA02 AA20 BA02 BA11 CA04

Claims (1)

[Claims] In a sliding bearing device for a rotating shaft, the inner surface of a bearing as a wear surface of a bearing and the outer surface of a sleeve opposite to the inner surface of the bearing have the same taper, whereby wear of the inner surface of the bearing progresses. A bearing device in a can, characterized in that the relative position of the bearing and the sleeve in the axial direction changes accordingly.