DE1034430B - Device for the formation of an oil mist for lubricating roller bearings, toothed wheels and the like. like - Google Patents

Description

Device for the formation of an oil mist for the lubrication of rolling bearings, Gears and the like The invention relates to a device for forming an oil mist for lubrication. of rolling bearings, gears and the like to essentially horizontally lying and 'fast running shafts, in which one the lubricant receiving, annular container is provided from which the rotated Lubricants under the influence of the then occurring centrifugal forces through special, towards the areas to be lubricated. directional atomizer nozzles is pressed.

In the case of ring gears of planetary gears, it has already been proposed that an annular container in the respective wheel therethrough. to create that one annular groove is partially covered with a ring. With such designs the ring gear runs in an oil bath, so that oil over the edge of the attachment or. of the ring groove partially covering ring can get into the annular container. But such facilities have the disadvantage that they are only relatively small. Speeds. work perfectly, especially at high speeds the respective ring gear. a groove cuts into the oil bath, so to speak, so that the oil flow into the annular space is in question. This disadvantage is greater, the lower the oil level is so that when the mentioned facilities work properly. should, always care must be taken to ensure that the oil level is high. Besides that, there were big ones Oil quantities are required that still have to be monitored, is created by the deep immersion of the respective ring gear in the oil bath a lot of heat that the Oil heats up, which must be avoided in the interests of proper lubrication. As already mentioned, the devices mentioned are therefore unusable for high speeds.

The suggestion has already been made for vertically running spindles an annular container in a stationary part surrounding the shaft to be provided in which a funnel-like guide surface engages with the spindle circulates and so as it were scoops the lubricant out of the container, the then under the influence of centrifugal forces through atomizer bores is and in vapor form to the too. lubricating spots. Apart from this, that in this version there are strong frictional losses and therefore only inadequate The known design is extremely cumbersome built up, so let it turn out to be expensive. In addition, the general Structure of the device mentioned results in a very high construction that their Use e.g. B. in gear manufacturing because of the prevailing there - space shortage impossible power. The invention aims to remedy these drawbacks and it exists its essence is that the ring-shaped container - as in the case of ring gears from Planetary gears known per se - in one the rotary motion of the respective shaft participating, immersed in the oil sump disc is provided at the same time secures the part to be lubricated against axial displacement by means of a press fit or screw fit, wherein in the wall of the disc facing away from the atomizer nozzles at least one channel is provided in an annular slot adjacent to the respective shaft flows out.

While in the one known version for atomizing several parts are required, you come with the embodiment according to the invention with a single Part, so that it undoubtedly corresponds to the known version in is superior in economic terms. In addition, the novel Execution of significantly better lubrication conditions, as this is where the friction losses are reduced to the smallest possible level.

Likewise is no. Heat the oil to fear because of the arrangement of a channel. in one side wall of the disc only a struggling engagement of the Requires washer in the oil sump. The channel or channels act like ladles, de. always supply the annulus with a sufficient supply of oil. Furthermore is still It should be emphasized as advantageous that the one prepared for the atomization of the lubricant Washer also serves as an axial lock, which means that not only special clamping rings come in failure, but. himself too-and this is z. B. in gear manufacturing of great Meaning-a compact design results. Another thing to say about the channels is that through them the oil gets into the annulus without any effort, especially since the 01 as a result the acceleration effect within a certain speed range the disc against centrifugal force to the annular slot and from there flows into the annulus under the action of centrifugal force. Furthermore, since the parallel channels lying at a tangent penetrate the disc completely, is the Direction of rotation of the disc is irrelevant.

To avoid that from because or the channels in the slot The oil escaping from the disc flows outwards again, closes the outer boundary surface of the annular slot with the inner side surface .des the annular space a blunt Angle.

With this type of oil supply, the result of the immersion of the disc If the running friction that occurs in the oil sump remains as low as possible, it is advisable to to form the disc on its outer circumference in such a way that it is only with that of the part penetrated by the channels running parallel to a tangent in the oil sump immersed.

If. it is structurally not possible to provide an oil sump, can the oil supply also take place in such a way that a stationary ', -z. B. to a Oil pump connected pipe through a side wall facing away from the nozzles provided annular slot can protrude into the annular space. Here, too, the effort remains low, because z. B. a gear pump relatively cheap and often for other lubrication points already exists from the start.

But it is also conceivable, according to the invention, to eat the one carrying the disc Equip the shaft with an axial bore that has at least one radial bore communicates with the annulus. In such a case, ring slots are natural not necessary, which ax of the feeder you choose depends on the one hand. according to: economic aspects and on the other hand according to the given spatial Circumstances.

In terms of production, it is also expedient to make the disk from two assemble shell-like parts and these parts z. B. by welding. together connect to. This results in the advantage that the disk z. B. can manufacture on a lathe, which is much easier than z. B.- to to water.

In the drawing, the invention is represented by several exemplary embodiments illustrates; It shows Fig. 1 a device according to the invention in section, Fig. 2 the disc shown in Fig. 1, seen from the left, Fig.3 and 4 other embodiments the oil mist disk in section and Fig. 5 and 5 a an example of the production the atomizer nozzles.

As can be seen in particular from FIG. 1, a shaft 1 is mounted in a housing 3 by means of a ball bearing 2. On the remote end 4 of the shaft 1 there is a disk 5 which, in the exemplary embodiment shown, is screwed with an internal thread 6 onto an external thread 7 of the shaft 1 or of the shaft end 4. The disk 5, which serves here at the same time as a retaining ring for the bearing ring 8 of the bearing 2 drawn onto the shaft 1, has an inner ring ring 1, the smallest diameter of which is on the one facing away from the bearing 2 Side merges into an annular slot 10 , the outer narrowing surface 11 of which encloses an obtuse angle with the corresponding annular space 12. Channels 13 open into the _ringöz @ .raigex @ slit 11 (see also Fig. 2), which pass through the side wall 14 of the disk 5 and through which, during the running of the shaft 1, oil is conveyed from an oil sump 15 in the specified manner into the annular space 9. In Fig. 1, the channels 13 are rotated into the plane of the drawing for the sake of simplicity.

So that the disk 5 dipping into the oil sump 15 is as close as possible causes small flexing friction, it is conical on its outer surface, so that only the part of the disk penetrated by the channels 13 is immersed in the oil sump.

In the side wall 16 of the Seheibe 5 are evenly distributed on the bearings to be lubricated directed nozzles 17 are provided which are attached to the annular space 9 are connected.

The disc 5 shown in Fig. 3 differs from that according to Figs. 1 and 2 in that they on the one hand consists of two cylindrically formed on the outer surfaces of parts 18, which are welded at 19 and that on the other hand, the oil supply through a location-f estes tube 20 takes place, which penetrates an annular slot 21 of one part 18. In addition, the disk 5 does not have an internal thread here for its attachment, rather the idea is to press the disk 5 onto the shaft 1.

According to Fig. 4, the disc 5 is again made in one piece, however the annular space 9 extends to the shaft end 4, which is advantageous for the production is. In this version, the oil is supplied through an axial and a radial one Bore 22 or 23, the bore 22 z. B. is connected to an oil pump.

Figs. 5 and 5 a show a simple way to produce the Nozzles 17 in the wall 16 of the disc 5. Since the nozzles 17 only have a small outflow cross-section should have, it is sufficient to provide relatively narrow bores 24 in the wall 16, the then z. B. be deformed by means of a conical mandrel 25.

Claims (6)

PATENT CLAIMS: 1. Device for the formation of an oil mist for lubrication of roller bearings, gears and the like on substantially horizontal and high-speed shafts with a ring-shaped shaft that receives the lubricant Container is provided from which the rotated lubricant below the influence of the centrifugal forces then occurring due to special, on the to be lubricated Places directed towards atomizer nozzles is pressed, characterized in that the ring-shaped container (9) - as in the case of ring gears of planetary gears per se known -in one that participates in the rotary movement of the respective shaft, in the oil sump submerged disc (5) is provided, which at the same time the 'to be lubricated Part (2) secured against axial displacement by a press fit or screw fit, with in the wall (14) of the disc (5) facing away from the atomizer nozzles has at least one channel (13) is provided in an annular, adjacent to the respective shaft Slot (10) opens. 2. Device according to claim 1, characterized in that the outer boundary surface (11) of the annular slot (10) with the inner Side surface (12) of the annular space (9) encloses an obtuse angle. 3. Establishment according to claims 1 and 2 characterized in that. the disk (5) '' its outer periphery is designed in such a way that them only with that Part (14) is immersed in the oil sump (15) through which the channels (13) pass. 4. Device according to claim 1, characterized in that the annular space (9) on the side facing away from the nozzle (17) delimiting an annular slot (21) which, when the disc (5) does not dip into the oil sump, creates a stationary, z. B. pipe (20) connected to an oil pump protrudes into the annular space (9) (see Fig. 3). 5. Device according to claim 1, characterized in that when not in the Oil sump immersed disc (5) the oil supply in the annular space (9) in the way takes place that the shaft (1) has an axial, z. B. bore fed by an oil pump (22), of which aub has at least one radial opening into the annular space (9) Bore (23) branches off (see Fig. 4). 6. Device according to claims 1 to 5, characterized in that the disc (5) consists of two shell-like parts, (18) is composed, the z. B. are firmly connected by welding. Considered publications: German patents nos. 944 037, 550 837, 134,489; Austrian Patent No. 110 170; French patent specification no. 740 685; U.S. Patent Nos. 2,439,709, 2,302,822.