JPH022054Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a bearing support device having an oil supply device.

Conventionally, there have been devices of this type as shown in FIGS. 1 and 2. In the figure, 1 is a bracket,
7 is a rolling bearing supported by this bracket, and this rolling bearing has a rolling element 7a and an outer ring 7.
It is composed of b, etc. 2 is a frame; 3 is a stator attached to the frame; 4 is a rotor attached to a rotating shaft 5 supported substantially vertically; 6 is a lubricating oil filler port; 8 is an end cover for receiving lubricating oil; Reference numeral 9 is a fringe jar for preventing lubricating oil from dripping down the rotating shaft 5, and reference numeral 10 is an oil drain port for oil accumulated on the end cover 8.

Next, the operation will be explained.

The lubricating oil filled from the oil filler port 6 falls onto the upper end of the rotating shaft 5 as shown by arrow A, is blown in the circumferential direction by the rotational force, passes through the gap in the rolling bearing 7, and falls to the bottom end. It accumulates inside cover 8. The oil is then discharged to the outside from the oil drain port 10 by a separately connected vacuum pump (not shown).

Since the conventional oil supply device is configured as described above, the lubricating oil that has fallen from the oil filler port 6 is blown to the outer ring 7b side of the rolling bearing 7, so that the rolling elements 7a
The problem was that the amount of oil supplied was small, resulting in poor lubrication.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and an oil receiving part 11 and an oil supply hole 12 are provided at the protruding end of the rotating shaft 5 so that oil is supplied toward the rolling elements 7a. It is an object of the present invention to provide a bearing support device having a lubricating device that can sufficiently lubricate the rolling elements 7a.

An embodiment of this invention will be described below with reference to FIGS. 3 and 4. In the figure, 11 is an oil receiver provided at the end of the rotating shaft 5, and 12 is this oil receiver 1.
A plurality of oil supply holes are drilled diagonally downward from the bottom of the roller 1 to a point located above the rolling element 7a.

Note that the structure of the other parts other than those described above is the same as that of the conventional example shown in FIGS. 1 and 2, and therefore detailed explanation will be omitted.

In the above configuration, the lubricating oil injected from the oil inlet falls into the oil receiver 11 provided on the upper part of the rotating shaft 5 as shown by the arrow A, and is blown away in the circumferential direction by centrifugal force. At this time, since the oil supply hole 12 is opened diagonally toward the rolling element 7a of the rolling bearing 7, the rolling element 7a is accurately lubricated.

In the above embodiment, the case of a single rolling bearing is shown, but the same effect can be obtained even if a plurality of combined bearings are employed.

As described above, according to this invention, the rolling elements of the rolling bearing can be accurately lubricated and the bearing performance can be improved.

[Brief explanation of drawings]

Figure 1 is a sectional view of the conventional device, Figure 2 is a detailed view of the oil supply system, Figure 3 is a sectional view of the oil supply system showing an embodiment of this invention, and Figure 4 is a plan view of its rotating shaft. be. In the figures, the same reference numerals indicate the same or equivalent parts, 5 is a rotating shaft, 6 is an oil filler port, 7 is a rolling bearing, 7a is a rolling element, 11 is an oil receiver, and 12 is an oil filler hole.

Claims (1)

[Scope of utility model registration request] In a bearing support device that includes a rolling element 7a and has an oil supply device that supplies lubricating oil to a rolling bearing 7 that supports a rotating shaft 5 substantially vertically, an end that projects outward from a rolling bearing fitting portion of the rotating shaft 5. In the department,
A bearing support device having an oil supply device characterized in that an inclined hole 12 is formed for supplying lubricating oil to the rolling elements 7a of the rolling bearing 7.