JPS60211197A - Bracket of bearing device - Google Patents

Abstract

PURPOSE:To use the space effectively by providing a bracket supporting a bearing device, which is formed by a ring-shaped body hollow triangular in section and inserting a cooling medium in a hollow triangular portion of the bracket. CONSTITUTION:A bearing device comprises a main shaft 1, a runner 2 and a bearing 3. A water feed pipe 10 and a drain pipe 11 are connected to a triangular chamber 4c, and the triangular chamber 4c is filled with cooling water to cool an oil tank 4b and cool lubricating oil 5 in the tank. Accordingly, the lubricating oil 5 can be cooled reliably, and the capacity of an oil cooling device 8 placed outside a bracket 14 can be reduced to effectively use the space of the triangular portion.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a bracket 1 for a bearing device, and particularly to a bracket 1 for a bearing device that is constituted by a hollow triangular annular body in cross-section.

[Background of the invention]

In general, cooling devices that use lubricating oil cannot dissipate heat only by natural heat radiation from an oil tank, etc., when the amount of heat generated in the bearing is large, so an oil cooler is used to cool the lubricating oil. has been adopted.

Although there are various types of cooling devices, a typical example is shown in FIG. As shown in the figure, the bearing device is composed of a main body 1 and a runner 2 which are rotating bodies, and a bearing 3 which is a stationary body, and is housed in oil tanks 4a and 4b, and contains lubricating oil 5. It is immersed in water and cooled. The oil tank 4a is connected to an oil circulation system W7, an oil cooler 8 installed outside the oil tank, and a cold oil pipe 9 via a hot oil pipe 6, and is cooled as shown by the arrow in the figure. An oil@ring circuit is configured in which lubricating oil passes through the surface of the bearing 3.

By the way, the amount of lubricating oil is generally determined by the sum of the amount of heat generated by the bearing 3 and the amount of heat due to stirring loss due to rotation of the main shaft 1 and runner 2, etc. If this total amount of heat is small, as an oil tank, There are cases where the oil tank 4b alone has sufficient capacity. That is, if the amount of lubricating oil is too large and it is uneconomical to fill the oil tank 4a with lubricating oil 5, the oil tank 4a may not be filled with lubricating oil and may be used in an empty state. However, the feature of this hollow triangular bracket is that the triangular shape is filled with lubricating oil and can also be used as an oil tank, so if it remains hollow, the space in the triangular part is wasted. It has the disadvantage of becoming a thing.

[Purpose of the invention]

An object of the present invention is to provide a bracket 1 for a bearing device that can effectively utilize the hollow triangular space of the bracket 1.

[Summary of the invention]

The present invention is characterized in that the hollow triangular shape is filled with a cooling medium such as cooling water or cooling air for cooling the oil tank.

[Embodiments of the invention]

The present invention will be explained below based on the illustrated embodiments. One embodiment of the present invention is shown in FIGS. 2 to 4.

As shown in FIG. 2, it is assumed that the hot oil feed pipe 6 is directly connected to the oil tank 4b, and the triangular chamber 4c and the oil tank 4b are isolated. A water supply pipe 10 and a drain pipe 11 are connected to this triangular chamber 4c, and the triangular chamber 4c is filled with cooling water to cool the oil tank 4b and the lubricating oil 5 inside.

In FIG. 5, cooling fins 12 are provided at the interface between the oil tank 4b and the triangular chamber 4c to improve the cooling effect.
In the figure, a heat pipe 13 is left in place of the cooling fins 12 to further improve the cooling effect.

This embodiment has the effect that the lubricating oil 5 is reliably cooled, and the capacity of the oil cooler 8 left outside the bracket 14 can be reduced. The oil circulation device 7, the hot oil feed pipe 6, and the cold oil feed pipe 9 can be made compact.

Furthermore, in addition to a fluid such as cooling water, a gas such as air can be used as the cooling medium, and if the same effect is obtained and the cooling effect of the present invention is remarkable, the cooling medium may be installed outside the bracket 14. The oil cooler 8 and others can be omitted.

〔Effect of the invention〕

According to the present invention, the space of the triangular portion of the hollow triangular bracket can be effectively utilized.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional bearing device, and FIGS. 2 to 4 are longitudinal sectional views showing embodiments of the bearing device of the present invention. 3... Bearing, 4a, 4b... Oil tank, 4c... Triangular chamber, 10... Water supply pipe, 11... Drain pipe, 14...
··bracket. Agent: Patent Attorney Akio Takahashi, 3f7J /

Claims (1)

[Claims] 1. A bracket consisting of an annular body having a hollow triangular cross-sectional shape for storing lubricating oil for lubricating a bearing device and supporting the bearing device, characterized in that a cooling medium is inserted into the hollow triangle. Equipment bracket.