JPS6267356A - Oil supply device for bearing - Google Patents

Abstract

PURPOSE:To control a quantity of lubricating oil for a bearing part to a fixed value, by providing a supply oil pad delivery pipe, which opens its one end, in the pressed contact part of a supply oil pad with an axle and connecting the other end of the supply oil pad delivery pipe with the outlet of a supply oil pump delivery pipe. CONSTITUTION:A device, slidably fixing a supply oil pad 9 to a supporting member 9a fixedly provided in an upper part opening part 3f of a bearing box 3 while providing a supply oil pad delivery pipe 9c opening its one end in a pressed contact part 9b of the supply oil pad 9 with an axle 5, connects the other end of said supply oil pad delivery pipe 9c with the outlet of a delivery pipe 3d of a supply oil pump 11. As a result, the device, slidably fixing the supply oil pad 9 to the supporting member 9a while connecting the other end of the supply oil pad delivery pipe 9c with the outlet of the delivery pipe 3d of the supply oil pump 11, suppresses a quantity of lubricating oil to bearings 1, 2 to a fixed value.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a bearing oil supply device.

[Background of the invention]

A conventional bearing lubricating device is disclosed in Japanese Unexamined Patent Publication No. 52-11-11, in which a lubricating pad made of a felt or cotton cloth layer is pressed tightly against the axle, and the other side is immersed in lubricating oil. The oil was supplied using the capillary action inside the tank. This oil supply device has no moving parts and can reliably supply oil, but since it utilizes capillary action, the amount of oil supplied is small, which impairs the lubricating function of the bearing.

Further, as this type of bearing oil supply device, there is a device that is configured with a gear pump in which rotational power is transmitted between a driving gear and a driven gear fitted to an axle, and supplies lubricating oil directly into the bearing portion.

5 to 7 show conventional examples of this type of bearing oil supply device. As shown in the figure, the bearings 1.2 each have a two-part structure, are mounted together with a bearing box 3 and a main motor frame 4, and are supported by an axle 5. The bearing box 3 has an oil tank 3a in the center, oil tanks 3b on both sides, and an oil reservoir 3C in the upper center.
It has The gear pump 6 is installed in a central oil tank 3a, and rotational force is transmitted between a drive gear 7 fitted to the axle 5 and a driven gear 8. The lubricating oil discharged from the gear pump 6 passes through a discharge pipe 3d in the bearing box 3, is press-fitted into the oil reservoir 3c in the upper center, and flows into the oil reservoirs 3b on both sides. When the oil level in the oil reservoir 3c at the upper center exceeds position a, lubricating oil flows into the gap between the inner diameter surface of the bearing and the axle journal and is supplied to the shaft sliding portion. After this, the lubricating oil passes through two paths 3e (only one is shown) and then passes through the central oil tank 3a.
Return to and cycle. Lubrication devices (oil pads) 9, which utilize capillary action and are installed in the oil tanks 3b on both sides, provide supplementary lubrication, and are used to supply oil when starting up the electric vehicle or when the gear pump 6, which is the oil supply pump, breaks down. help.

However, the bearing oil supply device configured in this manner has a drawback that the structure is complicated. In other words, it has been experimentally confirmed that the optimum amount of lubricating oil supplied to the bearing 1.2 without impairing its lubricating function is 100 cc/h. However, the supply capacity of the gear pump 6, especially as the train speed increases,
When the gear pump 6 rotates at high speed, the lubricating capacity of the gear pump 6 improves, and more lubricating oil than necessary is forcibly supplied to the bearings 1 and 2. The lubricating oil leaks to the outside from the flange portions 1b and 2b. In order to prevent this lubricating oil from leaking, oil recovery mechanisms 1a and 2a are provided in the flange portions 1b and 2b, so the structure of the bearing oil supply device becomes complicated.

FIG. 8 shows another conventional example of a bearing oil supply device.

As shown in the figure, the bearing oil supply device is driven by an eccentric ring (circular ring 10) provided on a vehicle 4115, and has an inlet 11a and an outlet 11 opened into the lubricating oil aao.
A refueling pump 111 having a refueling pump 111, and a discharge pipe 3d connecting the discharge port 1.1-b of the refueling pump 11 and the bearing 1.
etc. The oil supply pump 11 is operated by an eccentric ring 10 fitted to the axle 5 by a cam mechanism.
Reciprocating power is applied to the reciprocating screw I-ne 12 of the lubricating pump [8]-, and the lubricating oil 3ao flows from the suction port 11a of the oil supply pump [8]- to the discharge port 11b. This lubricating oil 3a'o is supplied to the discharge pipe 3
d, from the outlet 13 of the discharge pipe 3d to the inner diameter surface of the bearing 1 and l
1f41Ill is supplied between the inner surface of the gear and the bearing lubrication. In this bearing oil supply device as well, the lubricating oil 3ao is forcibly supplied to the bearing 1 as described above.
The lubricating oil 3ao supplied to the bearing 1 leaks to the outside from the flange portion 1b of the bearing. Therefore, the lubricating oil 3ao disappears.
There was a problem with a large amount of R.

[Purpose of the invention]

The present invention has been made in view of the above points, and even if the supply capacity of the oil supply pump is excessive, it will not be possible to supply oil to the bearing.
1. It makes it possible to always have the optimum oil amount in the III oil supply wave. 1. [Summary of the Invention] That is, the present invention provides a bearing that is installed on an axle that drives a wheel and supports a vehicle body or a driving machine, and a bearing that is installed at a lower part of this bearing. a bearing box provided on the axle and containing a lubricating oil; an oil supply pump provided on the axle and driven in a circular line and having a suction port and a discharge pipe opening into the lubricating oil; In a bearing lubricating device, the lubricating pad has one end pressed into contact with the axle through an open hole and the other end immersed in the lubricating oil. A refueling pad discharge pipe is slidably fixed to a support fixed to the refueling pad, and is provided with a refueling pad discharge pipe having one end open at a press contact portion of the refueling pad with the axle;
This is characterized in that the other end of the oil supply pad discharge pipe is connected to the outlet of the oil supply bong r discharge pipe, thereby suppressing the number of lubricating oils to the bearing portion to a constant level.

[Embodiments of the invention]

Hereinafter, the present invention will be explained based on the embodiments shown in 1\1. An embodiment of the present invention is shown in FIGS. 1 to 4.
Note that parts that are the same as those in the prior art are designated by the same reference numerals, so their explanation will be omitted. In this embodiment, the refueling pad 9 is slidably fixed to a support 9a fixed to the opening 11 3f in the upper part of the bearing box 3, and one end of the refueling pad 9 is attached to the pressing contact portion 9b of the refueling pad 9 with the axle 5. Opened refueling pad discharge pipe 9C
The other end of the fuel pad discharge pipe 9c was connected to the outlet of the discharge pipe 3d of the fuel pump 11. By doing this 4, the oil supply pad 9 is inserted into the opening 3 at the top of the bearing box 3.
The refueling pad 9 is slidably fixed to a support 9a fixed to the axle 5, and the refueling pad 9 is provided with an opening I at one end at the press contact portion 9b with the axle 5, and a refueling pad discharge pipe 9C. The other end of the pad discharge pipe 9C is connected to the outlet of the discharge pipe 3d of the oil supply pump 11, so that the bearing 1.
The lubricating oil base to the bearings 1 and 2 is now suppressed to a constant level, so that even if the supply capacity of the oil supply pump 11 is excessive, the supply of lubricating oil 3ao -1 to the bearings 1 and 2 is always at the optimum oil amount. It is possible to obtain a bearing oil supply system that makes it possible.

The refueling pump], 1, I; l, the drawn out discharge 11, 3, d, the refueling para H, 3g, are in pressure contact with the y-shaft 5, and are opened with an outlet portion 9d near the part where they are; A fuel pad discharge pipe 9c extending outward from the support body 9a of the fuel pad 9 was connected to the fuel pad discharge pipe 9c through a connecting break 9e.

In this way, the lubricating oil 3ao supplied from the oil supply pump 11 is connected to the discharge pipe 3d drawn out from the oil supply pump 11 via the connection disconnection 9e, as indicated by the arrow in the figure. Then, attach it to the support 9a of the refueling pad 9, and from the refueling pad discharge pipe 9c, press contact portion 9b of the refueling pad 9 with the vehicle @ 5 from the outlet 9d of the refueling pad discharge pipe 9C. will be discharged. That is, the lubricating oil 3ao supplied by the oil supply pump 11 is.

Instead of being forced directly into the gap between the bearings 1 and 2 and the journal surface of the axle 5, the oil supply pad 9
is supplied to the bearing section through the press contact section 9b with the axle 5. Therefore, even if the lubricating oil supply capacity of the oil supply pump 11 is excessive, the excess lubricating oil will be transferred to the bearing l.

2. The bearing box 3b, which is provided below the 1st. As a result, the amount of oil flowing into the bearing is suppressed.
As the train speed increases and the rotational speed of the axle 5 increases, the refueling capacity of the refueling pump 11 becomes necessary.
Even in the case where the bearing becomes hot, the amount of lubricating oil to the bearing can be kept constant. The refueling pad 9 is made to be able to slide toward the axle 5 between the support body 9a and is pressed by a spring, so that the refueling pad 9 is always in close contact with the axle 5 with a predetermined pressure. Above 9 is the bearing box 3 immersed in lubricating oil 3a (+).

-)゛C When a malfunction occurs due to failure of the refueling pump 11, or when the train starts to start, the refueling pump 1
When the lubricating oil supply capacity of No. 1 is reduced, it plays an auxiliary role. Further, the refueling pad discharge pipe 9c is fixedly attached to the support body 9a of the refueling pad 9, and the refueling pump 11°vr discharge pipe 3,'' and the connecting joint 9 are connected to the outside of the support body 9a.
Since the connection is made through e, when the refueling pad 9 is worn out, the refueling pad 9 can be removed by removing the adjoining v1'rr hand 9e, making it easy to replace the refueling pad 9. It is possible to improve maintainability.

In this embodiment, one oil supply pump 11 and one oil pump 11. Although the discharge pipe 3d is branched into both directions, the husband oil supply pump 11 may be arranged between the bearings 1 and 2.

Furthermore, in this embodiment, the oil supply pump 11 is driven by an eccentric ring 10 (circular ring) provided on the axle 5, but the present invention is not limited to this, and it may be driven by a gear.

〔Effect of the invention〕

As described above, the present invention makes it possible to always keep the amount of lubricating oil supplied to the bearings at the optimum amount even if the supply capacity of the oil supply pump is excessive, thereby eliminating the problem of excessive supply capacity of the oil supply pump. Therefore, it is possible to obtain a bearing oil supply device that makes it possible to always supply the optimum amount of lubricating oil to the bearing.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of an embodiment of the bearing oil supply device of the present invention, and FIG. 2 is a sectional view around the oil supply pad of the same embodiment.
The third is a cross-sectional view around the oil supply pump of one embodiment, and the fourth
The figure is also a perspective view showing the supported state of the oil supply pad in one embodiment, Figure 5 is a vertical side view of a conventional bearing oil supply device, Figure 6 is the same (cross-sectional view around the conventional oil supply pad, and Figure 7 is FIG. 8 is a longitudinal sectional side view of another example of the conventional bearing oil supply device. 1...bearing, 1c...opening hole provided in the bearing, 2...
・Bearing, 3...Bearing box, 3ao...WIi oil, 3
d...Discharge pipe, 3f...Opening at the top of the bearing box, 5.
...Axle, 9...Refueling pad (refueling bag W1), 9
．． a...Support body, 9b...Press contact portion with axle, 9
c... Oil supply pad discharge pipe, 9d... Outlet part of supply L oil pad discharge pipe, 9e... Connection disconnection, 10.
... Eccentric ring (ring), 11 ... Oil supply pump, Heater 1
Ward 4m each 51 cut eel 6a sister 7 area

Claims (1)

[Scope of Claims] 1. A bearing installed on the axle that drives the wheels and supporting the vehicle body or the driving machine, a bearing box installed at the bottom of the bearing and storing lubricating oil, and a bearing box installed on the axle. a refueling pump that is driven by an annular ring and has a suction port and a discharge pipe that open into the lubricating oil, one end of which is pressed into contact with the axle through an open hole provided in the bearing, and the other end In the bearing oil supply device having the oil supply pad immersed in the lubricating oil, the oil supply pad is slidably fixed to a support fixed to an opening in the upper part of the bearing box, and the oil supply pad is A bearing lubrication device characterized in that a lubrication pad discharge pipe with one end open is provided at a pressure contact portion with an axle, and the other end of the lubrication pad discharge pipe is connected to an outlet of the discharge pipe of the oil supply pump. 2. The bearing oil supply device according to claim 1, wherein the oil supply pad is formed of laminated felt. 3. The bearing oil supply device according to claim 1, wherein the oil supply pad discharge pipe of the oil supply pad and the support body are integrally constructed.