JPS5915765Y2 - Vertical guide bearing device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a guide bearing device used in a vertical rotating electric machine or the like.

For example, in a vertical rotating electric machine, in addition to the thrust bearing, a guide bearing is usually provided to prevent steady rotation.
These bearings are housed in oil tanks for lubrication.

A conventional guide bearing device was as shown in FIG.

A guide bearing 2, which is divided into a plurality of parts in the circumferential direction, is attached to the outer circumference of a cylindrical shaft part 1a provided on the rotating shaft 1 to prevent steady movement in the radial direction.

3 is a holding plate, 5 is a plate for the bearing, 4 is an adjustment bolt and guide bearing 2
is adjusted to have an appropriate clearance with the cylinder shaft portion 1a.

7 is a bracket to which an oil tank 8 is attached and a lubricating oil 9
is inserted, and the oil level is set at approximately half the height of the guide bearing 2.

6 is an oil cooler equipped with a water cooling pipe.

The guide bearing 2, whose temperature has increased due to operation, is cooled by the lubricating oil 9 stirred by the rotation of the cylinder shaft portion 1a.

If the bearing height is relatively low, lubrication and heat exchange are provided by the conventional devices described above.

However, as high circumferential speeds and high rigidity are required, the height of the bearings increases, and the simple stirring of lubricating oil as in the past is not enough to exchange heat, and lubrication is insufficient, resulting in bearing burnout. There was a risk of an accident.

This invention was devised in view of the above circumstances, and the purpose of this invention is to provide a lubricating oil transfer device below the guide bearing to enable effective lubrication and heat exchange of the bearing.

An embodiment of this invention will be described below with reference to FIG.

A lubricating oil transfer device 10 is provided at the lower end of the cylinder shaft portion 1a.

Reference numeral 11 denotes a guide plate attached to, for example, a blade 12 to be described later, whose outer circumferential side is bent upward to guide the lubricating oil 9 toward the bearing surface of the guide bearing 2 .

Reference numeral 12 denotes a plurality of blades attached to the lower surface of the cylindrical shaft portion 1a of the rotating shaft 1, which spreads the lubricating oil 9 in the radial direction by the rotation of the rotating shaft 1.
That is, it is guided from the inner circumferential side of the cylinder shaft portion 1a to the outer circumferential side.

A transfer device 20 is constituted by these guide plates 11 and vanes 12, and transfers the lubricating oil 9 cooled by the oil cooler 6 in the radial direction as shown by arrows A and B.
The lubricating oil 9 moves from arrow B to arrow C by the outer circumferential bending part of 1.
is transferred above the guide bearing 2 to cool the guide bearing 2.

The lubricating oil 9 that has cooled the guide bearing 2 passes through the oil cooler 6 via arrows D and E, and is effectively heat exchanged.

By repeating such operations, the guide bearing 2 is effectively cooled.

13 is a bolt for mounting, 14 is a support ring integrally fixed to the bracket 7, and 15 is a plate as a support.

Details of the transfer device 10 are shown in plan view in FIG.
are projected on the guide plate 11 in the radial direction and are inclined in a direction corresponding to the rotation direction M.

However, when the rotation directions are the M direction and the anti-M direction, that is, when the rotating shaft 1 rotates in both forward and reverse directions, it is installed without being inclined radially.

The lubricating oil 9 pushed out from arrow A to arrow B by the vanes 12 is guided by the guide plate 11 and transferred to the guide bearing 2.

Further, as shown in FIG. 4, the bolt 13 is mounted by sinking into the blade 12 so that the head does not protrude from the surface.

FIG. 5 shows a side view of the blade 12 portion.

Further, in FIG. 2, reference numeral 3a is an outlet hole provided in the holding plate 3 to allow the transferred lubricating oil 9 to escape.

In addition, as shown by the chain line, the support ring 14 has an outlet hole 14a.
may be provided.

Alternatively, the receiver has an exit hole on the outer circumferential side of the plate 15 (not shown).
may be provided.

Furthermore, although the guide plate 11 is attached to the blade 12 in the above embodiment, the guide plate 11 may be attached to the plate 15 with a gap provided below the blade 12.

As described above, according to this invention, lubricating oil is sufficiently transferred to the guide bearing, and the oil that has lubricated the guide bearing is circulated through the oil cooler, thereby achieving effective heat exchange and lubrication.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing a conventional vertical guide bearing device, FIG. 2 is a vertical cross-sectional view showing a guide bearing device according to an embodiment of the invention, and FIG. 3 is a transfer device shown in FIG. 4 is a sectional view taken along line IV--IV in FIG. 3, and FIG. 5 is a sectional view taken along line v--V in FIG. 3. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 1a... Cylindrical shaft part, 2... Guide bearing, 9... Lubricating oil, 10... Oil transfer device, 11...
・Information board, 12...feather. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] It surrounds and radially supports the cylindrical shaft provided on the vertical weight rotating shaft, and is attached to a guide bearing housed in an oil tank and to the lower surface of the cylindrical shaft at a position below this guide bearing. a plurality of blades that transfer the lubricating oil in the oil tank in the radial direction from the inner circumferential side to the outer circumferential side of the cylinder shaft portion; and a guide plate for guiding lubricating oil transferred by the vanes upward along the bearing surface of the guide bearing.