US2439954A

US2439954A - Lubrication

Info

Publication number: US2439954A
Application number: US586289A
Authority: US
Inventors: John V Tercho
Original assignee: Westinghouse Electric Corp
Current assignee: CBS Corp
Priority date: 1945-04-03
Filing date: 1945-04-03
Publication date: 1948-04-20
Anticipated expiration: 1965-04-20

Description

April 20, l943- l J. v. TERc-ao 2,439,954

LUBRICATION Filed April 3, 1945 atentecl pr. j270, Q

LUBRICATION John V. Ter-cho, Turtle Creek, Pa., assignor to Westinghouse Electric CorporatiomEast Pittsburgh, Pa. a corporation of Pennsylvania Application April 3, 1945, Serial No. 586,289 l My invention relates to nood-lubricating means for an electric motor or other lubricated device, and it has particular relation to a lubricating means in which a shaft-driven pump, mounted at one end of the motor, supplies oil under pressure to the bearings at both ends of the motor.

Heretofore, the difference in the lengths of the oil-pipe lines from the pump to the bearings at the two ends of the machine has not only resulted in different oil-pressures at the two bearings, because of the difference in the pressuredrops in the respective oil-pipe lines, but it has also resulted in a considerable number of special pipe-connections'.

The object of my present invention is to `provide an oil-tank which is centrally disposed alongside of the motor or other lubricated device, said oil-tank having both an oil-reservoir and a pressure-oil chamber for receiving the oil, under pressure, which is delivered by the pump fromvr the machine, and the overflow-oil is returnedl from both bearings to the oil-reservoir partof the tank. In this way, I not only equalize the s claims. (c1. isi- 6) In accordance with my invention, an oil-tankv 8 is centrally disposed alongside of the motor, and this oil-tank has a horizontal partition il which divides the tank into an upper oil-reservoir II and a lower pressure-oil chamber I2, in the illustrated form'of my invention. An oil-line I3 extends to the pump 'I from the oil-reservoir II, while a second oil-line I4 extends from the pump I to the pressure-oil chamber I2. Some sort of pressure-relieving oil-passageway is provided, for discharging some of the oil pumped by the pump 1, so as to maintain a predetermined oil-pressure (assuminga constant-speed motor), depending upon the size of the pressure-relieving passageway. In the particular form of invention which I have illustrated, the pressure-relieving cilpassageway is provided by means of a hole *I5Y inthe partition 9, and preferably this hole is protected by a spaced balile I6, or other means for horizontally directing the oil which is discharged through said hole I5, so as to prevent the oil from spurting up and splashing against pressure of the oil which is supplied to the two bearings, but I also avoid all of the special pipeconnections which have heretofore been required' for the oil-piping.

With the foregoing and other objects in view, my invention consists in the combinations, apparatus, parts, and methods hereinafter described and claimed, and illustrated in the drawing, wherein: i

Figure 1 is an end View of the pump-end of a motor embodying my invention,

Fig. 2 is a side elevational view thereof, with parts broken away to show the tank-c cnstruc-FY tion, and

Fig. 3 is a' longitudinal sectional view'of the bearing. l

I have illustrated my invention in a preferred application thereof, in connection with a 200 horse-power, horizontal-shaft, electric motor which is intended for use on shipboard, where the rolling of the ship presents bearing-lubricating problems, by reason of the tilting of the shaft, usually resulting in the requirement of floodlubrication. The motor is shown at 4. It has an approximately horizontal rotating shaft 5 which is supported by means of two bearings 6, one at each end of the machine. At one end of the machine, there is disposed a shaft-drivenV pump 'I for pumping oil for the bearings.

the oil-tank cover I'I andproducing foam and oil-mist which would result in oil-leakage. The baffle I'I causes the oil-stream to be broken up in the bottom of the oil-reservoir II, thus preventing foam.

From the respective ends of the pressure-oil chamber I2, two oil-lines I8 run to the respective bearings 6, where they discharge oil, under pressure, to the tops of the bearings. An oildrain line I9 extends from each of the bearinghousings to the oil-reservoir II.

While my invention is applicable to any floodlubricated bearing, ithas been illustrated in con-l nection with a combination oil-ring bearing'and nood-lubrication bearing which constitutes the. subject-matter of my application Serial No., 586,290, -lled' concurrently herewith. As shown,

4o-more in detail in Fig. 3 of the accompanying" drawing, this bearing comprises a sleeve-bearing 2| for journalling the shaft. Each bearing has: a, housing 24 having an oil-chamber 25 in its lower portion. Each bearing also has an cil-ring 2li.'-` for lifting oil from the oil-chamber 25 to the topy of the journal. The top of the bearing-housing-` 24 is provided with a slot 21 through which theJ oil-ring 26 may be inserted or removed, and the' slot is closed by a slot-cover 28, which ha-s a'. downwardly depending oil-pipe 3|, extendinginto close juxtaposition to the top of the oil-ring '26, so as to serve as a keeper for preventing theoil-ring from jumping out of place. The oil-line I8, which supplies oil, under pressure, to the bearing is coupled to the top of the slot-cover 28 for