DE2027856A1 - Segment thrust bearing with bearing blocks for high sliding speeds - Google Patents

Description

Segment thrust bearings with bearing blocks for high sliding speeds When using pressure bearing blocks of the usual type for high sliding speeds In segment thrust bearings, more lubricating oil must be fed to the bearing than for training of the lubricating film and to dissipate the frictional heat. The reason lies z.3. in that the blocks are too far apart in the circumferential direction and in the great pumping action of the thrust bearing collar. An increase in the oil pressure in the supply line to the bearing for the purpose of increasing the amount of bearing oil is the inevitable Conclusion to achieve the desired load capacity of the bearing and bearing damage to be avoided by tearing off the oil film. In addition, the performance of the oil pump proportional to the product of the increased oil pressure and the additional required The oil quantity should be designed to be larger than theoretically necessary.

A known solution to the problem of excessive quantity is to that the camp - in the direction of the Ö1 river - a throttle any Downstream type that makes it possible to adjust the oil flow through the bearing in such a way that that the desired temperature difference between the inlet and outlet of the bearing is reached. This achieves an optimum with regard to the storage oil throughput. With this arrangement is conditional, however, that the thrust bearing collar of the shaft is in an oil-filled space of the bearing housing rotates. However, this leads to the high peripheral speeds of the thrust bearing collar to friction losses that are of the order of 10-15% of the Can accept bearing friction loss.

The purpose of using the thrust bearing blocks of the present invention is to enable to significantly reduce the excessive oil flow through the bearing and to avoid the above-mentioned friction losses between the thrust bearing collar and the oil-filled space is achieved according to the invention in that the blocks on their running side the radial edges each have a recess that extends from the inner radius of the segment ring extend out to just before its outer radius and that the individual blocks are lined up so close to one another that a throttle gap is created, the minimum of which Size solely through the mobility of the blocks and / or their to be provided Production method is determined.

The invention also prevents mixing of used oil can take place with unused oil.

An exemplary embodiment of the invention will now be described with reference to the drawing described. There are in it Fig. 1 a pressure bearing block and with Fig. 2 shows a detail of the bearing ring of a segment thrust bearing.

As shown in Fig. 1, each block (1) on the running side, in the direction of rotation of the shaft collar at the front and at the back, each with an arbitrarily designed recess (2). This recess extends radially from the inner radius over approx. 80-90% the radial height of the block.

In Fig. 2 the distance between two blocks is in a known manner reduced to a minimum, for example from the width of a saw blade results, which is used when cutting the prefabricated block ring.

According to the invention, the recesses of two adjacent blocks are used as an oil supply to the blocks following the recesses in the direction of rotation. It thus a uniform oil supply over the entire radial height of the block guaranteed. In addition, the pressure difference between the oil in the Recess and the oil between the block and the shaft collar at the end of the previous one The small block ensures that the used oil is discharged to the outside.

Because between the blocks by optimal choice of the gap 3 between If a throttling of any size is achieved, the oil can after passing through the blocks run off freely and it becomes the friction of the Welienbund that results its rota tion in the oil-filled space with known designs the log warehouse surrendered, Avoided.

The reduction in the excess amount of oil is now achieved by throttling achieved in that the gap between two blocks to any optimum is brought. The minimum size of the gap is due to the mobility the blocks, if a tilting bearing is provided for them or by Art their manufacture (e.g.

sawn-up ring or individually manufactured blocks).

The shape of the recesses can vary from case to case and also within of a bearing may be different on the leading and trailing edges of the blocks.

The measures according to the invention are also tiltable or not tiltable blocks can be used. The design or arrangement of the tilting edge or the tipping point is irrelevant.

4 pages description 2 patent claims 1 sheet of drawings with 2 characters

Claims (2)

Patent claims 1. Segment thrust bearing with bearing blocks for high sliding speeds, characterized in that the blocks on their Running side each have a recess (2) on the radial edges, which extends from the The inner radius of the segment ring extends until just before its outer radius and that the individual blocks are lined up so close together that there is a throttle gap (3) arises, the minimum size of which is solely due to the mobility to be provided the blocks and / or their method of manufacture is determined. 2. bearing blocks according to claim 1, characterized in that the Recesses (2) on the leading and trailing edges of the same or different types Are kind. Blank page