JPS58193924A - Supporting device of bearing - Google Patents

Abstract

PURPOSE:To enlarge lateral rigidity of a bracket, by a method wherein a disk is provided on the upper end of a bracket whose cross section is in a hollow and triangular shape, a guide bearing shoe is made to support directly by the disk and the inner diameter of the disk is made larger than the outer diameters of a revolving part and a thrusting frame. CONSTITUTION:A disk 11a is provided on the upper end of a bracket 11 whose cross section is in a hollow and triangular shape, a guide bearing shoe 8a is made to support directly by the disk 11a, a thrust frame 4 is installed on the top of an internal periphery of the bracket 11, and a thrust bearing shoe 2 is made to support by the thrust frame 4. Then, the inner diameter D3 of the disk 11a is made larger than the outer diameter D1 of a turning part 1 which makes a slide with the thrust bearing shoe 2 and the outer diameter D2 of a thrust frame 4. With this constitution, a hindrance is not given to assembling of a revolving part 1 of the thrust bearing shoe 2 and the thrust frame 4 by the disk 11a and a lateral rigidity of the bracket 11 becomes large through the large disk 11a.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bearing support device, and more particularly to a bearing support having a bracket t- for supporting a guide bearing and a thrust bearing! ! It's about location.

A conventional example of a special bearing support used in a bean dregs rotating electric machine, such as a water turbine generator, is shown in Fig. 811.

As shown in the figure, the thrust load consisting of the weight of the generator rotor, the mold plate of the rotating part of the water tank, water pressure, etc. is supported by the thrust bearing shoe 2 through rotation @lk, and this thrust The bearing shoe 2 is supported and transmitted from the bracket 6 to the base 7 via the spring body 3, thrust frame 4, and key 5. Since the thrust load of some large electric machines reaches several thousand tons, the bearing support device supports this large load on the base 7.
It must have a structure that can be transmitted to Also, will this bearing support device be considered for making the boat lighter?

It is desirable to design the roof so that each member shares stress evenly.

The bearing support device shown in the same figure was conceived from this point of view, and in particular, the bracket 6l-illill shape, which has the maximum weight iIl'@, is composed of a hollow triangular axially symmetrical body, and ρ・Receives thrust load r at the apex of the inner circumference of the shaft,
The top end supports the guide bearing shoe 8, the bolt 9, the frame 1O, etc. at the apex, and the outer apex is V-shaped so that it is supported by the base 7 to achieve the desired purpose. I made it. However, even with this structure, it was difficult to increase the lateral rigidity.

In other words, as electric machinery becomes faster and more violet in recent years,
The bending natural frequency of the bearing must also be controlled accordingly. Ninthly, it is necessary to increase the lateral rigidity of the guide bearing portion, but since the guide bearing is supported by the bracket 6 as described above, the lateral rigidity of this bracket 6 must be increased in the end. This is because the unbalanced force in the horizontal direction, that is, the lateral load due to the rotation of the electric machine, acts on the top end of the bracket 6 through the guide bearing shoe 8, bolt 9, frame 101, and therefore the bracket 6
[In order to increase the lateral rigidity of the frame 10 of the guide bearing, it is desirable to strengthen the disc 6ai that is integrated with the bracket 6 at the upper end vertex of the bracket 6. However, as shown in the figure, the The inner diameter Do is the thrust bearing shoe 2
Alternatively, the outer diameter D1 of the circuit section that slides thereon and the outer diameter D3 of the thrust frame 4 must be rounded to be smaller than the outer diameter D3, and the frame 10 and the bracket 6 must be made separate from each other in order to assemble these parts. Moreover, the outer periphery of the top apex of this bracket b cannot be made large because of the need to secure space for maintenance and inspection of the electrical equipment, so the disk 6aD at the top apex of the bracket b cannot be made large enough. Therefore, in order to ensure the required rigidity of the bracket 6 as a whole, it is necessary to
Although the plate thickness of each part has to be increased, the overlap of the bracket 6 has increased, and there is a drawback that it deviates from the lightweight structure, it is not a good idea in view of the above points of the present invention, The purpose is to provide a special bearing support mt having a flat plate with large lateral rigidity and reduced weight.

That is, in the present invention, a bracket is provided which is an axially symmetrical body having a hollow triangular cross-sectional shape and a disk at its upper apex. The apex has a thrust bearing, and the apex of its outer periphery is supported by the base, and the inside of the disk &"tDs
Let t"Ds be the outer diameter of the thrust bearing shoe of the thrust bearing and the rotating part that slides on this thrust bearing shoe, and let kDm be the outer diameter of the thrust frame that supports the thrust bearing shoe.
Inner diameter of disc in case of binding Ds k-* Dm)1)
s T, ka D.

＞　D　m and kn mold.

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 2 shows an embodiment of the invention. Note that parts that are the same as those in the conventional model are given the same reference numerals, and therefore their explanations will be omitted.

In this embodiment, the cross-sectional shape is a hollow triangular shape, and a disk 11a is provided at the apex of the upper end. The thrust bearing 41 is supported at the apex of its inner circumference, supported by the base 7 at the apex of its outer circumference, and has an inner diameter kDs of one circular plate 11a.
Thrust bearing shoe 2 and a The outer diameter of the rotating part that slides on this thrust bearing shoe 2 is k D l , and the thrust bearing shoe 2 is
t- Outer diameter of the supporting thrust frame 4 kD The inner diameter D1 of the disk when snow is assumed to be Ds, > D+, and Ds>
Ih Toshiku. In addition, in the figure, 12d is a supporting metal fitting with a bolted structure that prevents the guide bearing shaft 18m from falling. In this way, a disk 11m is provided at the top apex of Platan)llt to make it integral, and this disk 11m directly connects it.
Since the guide bearing shoe 8at is supported through the guide bearing shoe 9at, there is no need to provide a frame like in the past, and the disc 11a can be made larger than the conventional one, thereby increasing the lateral rigidity of the bracket 11. Can be made larger. Moreover, the inner diameter Ds 'i of the disk 11a is larger than the outer diameter D2 of the (b) width part of the force bearing shoe 2 and the thrust frame 4. 4 can be assembled without any trouble, and structural defects can be eliminated. In addition, the disc 11a integrated with the bracket 11 is enlarged (platinum) 1
Since the lateral rigidity of the bracket 1 is increased, not only is the frame unnecessary as described above, but also the thickness of each part of the bracket 11 does not need to be increased, and the bracket 11'111-
The weight can be reduced, and the entire cap support pupil can be made more compact.

As mentioned above, in the present invention, the guide bearing shoe is supported by a disc that is integrated with a bracket that is large enough to not interfere with the assembly of the rotating part of the thrust bearing shoe and the thrust frame. It is possible to obtain a bearing support device having a bracket having a large lateral rigidity and a large lateral rigidity so that the guide bearing shoe can be directly supported and the lateral rigidity of the bracket is large and the weight can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a conventional bearing support device, and FIG. WN2 is a vertical cross-sectional view of an embodiment of the bearing support device of the present invention.

Claims (1)

[Scope of Claims] 1. A bracket constituted by an axially symmetrical body having a hollow triangular cross-sectional shape and a disk at its upper apex is provided, and the guide bearing shoe is supported by the disk of this bracket, A thrust bearing is supported at the apex of the inner circumference, and supported by a base at the apex of the outer circumference, and the inner diameter of the disc is tDs,
Let kDt be the outer diameter of the thrust bearing shoe of the thrust bearing or the rotating part that slides on the thrust bearing shoe, WktD* outside the thrust frame O supporting the thrust bearing shoe,
The inner diameter of the disk D s't s D s > D t, and D s > D! A bearing support mounting characterized by the following.