WO2008141726A1 - Anlaufscheibe - Google Patents
Anlaufscheibe Download PDFInfo
- Publication number
- WO2008141726A1 WO2008141726A1 PCT/EP2008/003614 EP2008003614W WO2008141726A1 WO 2008141726 A1 WO2008141726 A1 WO 2008141726A1 EP 2008003614 W EP2008003614 W EP 2008003614W WO 2008141726 A1 WO2008141726 A1 WO 2008141726A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thrust washer
- sliding bearing
- shaft
- recess
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
Definitions
- the invention relates to a thrust washer for a shaft, in particular for use in pumps according to the preamble of claim 1.
- Thrust washers of the type discussed here, especially for use in pumps are known.
- the shaft is arranged in a sliding bearing.
- an axial lock in the form of a thrust washer for the shaft is generally required.
- the thrust washer which is arranged for example at one end of the sliding bearing, prevents the shaft displaced in the axial direction, for example, with respect to a pump flange. It has been shown in the known thrust washers that they strangle the leakage oil flow of the pump. The leaking oil accumulating on the thrust washer thereby causes axial forces acting on the shaft, which impair the functioning of the shaft and thus of the pump.
- a thrust washer with the features of claim 1 which is characterized by at least one recess provided in its edge region.
- a thrust washer which is characterized in that at least one recess of the thrust washer is in fluid communication with at least one groove introduced into a sliding bearing.
- the leakage oil of the pump can thus not only pass through the recess in the thrust washer, but can continue to flow through the groove in the sliding bearing.
- a thrust washer which has a VerFD- securing device.
- the anti-rotation device preferably comprises at least one pin which cooperates with a recess in the sliding bearing. Such anti-rotation device prevents the thrust washer rotates with the shaft and in this way wear of the thrust washer and rubbing on this components of the pump, such as on a pump flange occurs.
- an anti-rotation device is conceivable, in which the sliding bearing has at least one pin which cooperates with recesses in the thrust washer.
- a thrust washer which is characterized in that the at least one recess of the thrust washer is exactly in communication with at least one groove of the sliding bearing when the at least one pin of the anti-rotation device is positioned so that it in the corresponding recess in Plain bearing engages.
- the thrust washer is preferably arranged at a first end of the sliding bearing.
- the anti-rotation device also acts as a positioning device for the thrust washer and the sliding bearing to each other.
- the thrust washer is preferably integrated into the slide bearing after the locking of the anti-rotation device of the thrust washer.
- a thrust washer is preferred, which is characterized in that in the sliding bearing a shaft is mounted and the shaft has a shaft collar in the region of the sliding bearing. The shaft collar has a larger diameter than the shaft in the adjoining areas and thus cooperates with an axial securing of the shaft, as it is realized by the thrust washer.
- a thrust washer which is characterized in that at a second end of the sliding bearing a press-fit, hereinafter called EPB, is arranged.
- the shaft is arranged in the EPB, wherein a arranged in the EPB radial shaft seal prevents by a voltage applied to the peripheral surface of the shaft sealing lip leakage oil exiting the pump.
- a contact washer is also arranged between slide bearing and EPB, which is suitable as a contact surface for the waistband. The contact washer serves as the thrust washer as axial securing the shaft.
- a thrust washer which is arranged together with the sliding bearing and the EPB in a pump flange.
- the thrust washer, the sliding bearing and the EPB are pressed in the pump flange.
- the elements have a corresponding hold in the pump flange, so that rotation of these elements during operation of the pump by the frictional forces of the rotating shaft is excluded.
- a thrust washer which is distinguished by the fact that at least one recess is introduced into the sliding bearing, which is in fluid communication with a discharge channel of the pump flange which can also be realized as a relief bore.
- a discharge channel of the pump flange which can also be realized as a relief bore.
- a thrust washer is preferred, which is characterized in that the pump flange has at least one wedge-shaped groove, which creates a fluid connection between a recess receiving the shaft in the pump flange and the at least one recess of the thrust washer.
- the wedge-shaped groove ensures that leakage oil reaches the recess in the thrust washer and axial forces acting on the shaft are reduced.
- Figure 1 shows a cross section through a arranged in a pump flange thrust washer
- Figure 2 is a plain bearing cut lengthwise and rolled out
- FIG. 3 shows a longitudinal section through a thrust washer having a pump flange according to FIG. 1
- Figure 1 shows a cross section through a thrust washer 1, which is arranged in a pump flange 3.
- a shaft 7 is arranged in an opening 5 of the thrust washer 1.
- a sliding bearing 9 is provided in the pump flange 3, which surrounds the thrust washer 1 largely.
- a relief bore 11 which serves to direct leakage oil of the pump back to a tank or to the suction side of the pump.
- the thrust washer 1 shown in Figure 1 comprises a Verdussi- insurance device 13, which at least one, here two pins 15 and 17 which originate here from the main body of the thrust washer 1 and preferably lie with this in a plane.
- the pins 15 and 17 of the anti-rotation device 13 cooperate with recesses 19 and 21 in the plain bearing 9.
- the thrust washer 1 co-rotates due to frictional forces of the rotating shaft 7 and thus it comes to damage to the pump flange 3, which is preferably made of aluminum comes.
- the sliding bearing 9 has at least one pin which cooperates with an associated recess in the thrust washer 1 in order to realize an anti-rotation device.
- the recesses 19 and 21 on the slide bearing 9 and the pins 15 and 17 of the thrust washer 1 are preferably produced by punching processes. On the one hand, this enables cost-effective production and, on the other hand, no additional effort is made during the assembly process to position the parts with respect to one another.
- recesses 23 and 25 are shown in FIG. 1 in an edge region 26 of the thrust washer 1.
- the recesses 23 and 25 are realized here by a straight section running perpendicular to a radial line, ie in a secant-like manner in the edge region, but other configurations of the recesses 23 and 25 are also realized 25 possible.
- the sliding bearing 9 comprises grooves 27 and 29 which run on its inner surface and which engage in the plane of the slide in the sliding surface. camp 9 run. If the pins 15 and 17 of the anti-rotation device 13 are arranged in the associated recesses 19 and 21 of the sliding bearing 9, the recesses 23 and 25 of the thrust washer 1 are in fluid communication with the grooves 27 and 29 of the sliding bearing 9 indicated in FIG. Thus, the anti-rotation device 13 also acts as a positioning device for the thrust washer 1 and the sliding bearing 9.
- the leakage oil of a pump which accumulates on the thrust washer 1, through the recesses 23 and 25 continue to escape through the grooves 27 and 29 of the sliding bearing 9, so that caused by the oil axial forces on the Shaft 7 degraded or completely prevented.
- the recesses 23 and 25 of the thrust washer 1 are preferably designed so that they completely surround the grooves 27 and 29 in terms of area. This results in a minimum flow resistance for the leakage oil occurring at the thrust washer 1, so that it can drain easily.
- the advantageous embodiment of the thrust washer 1 thus prevents the leakage oil flow of the pump is hindered or Toschnürt and thereby lead to the shaft 7 acting axial forces to malfunction of the pump.
- the grooves 27 and 29 in the sliding bearing 9 are preferably not formed where the tensile forces of a drive belt act on the shaft 7, since there is no viable continuous surface at these points and it can come to a cross-sectional constriction, the leakage oil flow through the grooves 27th and 29 could decrease.
- Figure 2 shows a longitudinally cut and rolled out
- pins 31 and 33 From the recesses 19 and 21 opposite side of the sliding bearing 9 go by way of example pins 31 and 33, which may, for example, with a further, arranged at a second end of the sliding bearing 9 washer in combination.
- a corresponding, not shown here investment disc would have corresponding recesses, which in turn cooperate with the pins 31 and 33 of the sliding bearing 9, so as to realize an anti-rotation device.
- the pins 31 and 33 are shown here purely by way of example and may also be omitted.
- a recess 35 is provided in the sliding bearing 9, which extends in the rolled-up state of the sliding bearing 9 in the radial direction and is realized here for example by a shortened wall portion of the sliding bearing 9. It is also conceivable to realize the recess 35 through a bore which connects the space enclosed by the slide bearing 9 with the relief hole 11.
- the recess 35 is, as not shown here, in fluid communication with the relief bore 11 of the pump flange 3. Leakage oil, which passes through the recesses 23 and 25 in the thrust washer 1 in the grooves 27 and 29 of the sliding bearing 9, is thus further passed through the recess 35 in the relief hole 11 and from there back to a tank or to the suction side of the pump.
- FIG. 3 shows a longitudinal section through a pump flange 3 having a thrust washer according to FIG. 1.
- the sliding bearing 9 which is designed so that it receives a shaft collar 37 of the shaft 7. With its relative to the shaft 7 enlarged diameter of the shaft collar 37 can start against the thrust washer 1. This prevents the shaft 7 from shifting in the axial direction and rubbing against the pump flange 3.
- the thrust washer 1 is arranged. As can not be seen in FIG. 3, the thrust washer 1 and the slide bearing 9 are coupled to one another via the anti-twist device 13 of the thrust washer 1 and the corresponding recesses 19 and 21 in the slide bearing 9 according to FIG. Also, the recesses 23 and 25 of the thrust washer 1 with the grooves 27 and 29 of the sliding bearing 9 in accordance with Figure 1 in fluid communication, which is also not recognizable here.
- Anginem second viewed from a viewer of Figure 3 from the left end of the sliding bearing 9 is a Einpressbuchse 39 is arranged, which receives the shaft 7.
- the Einpressbuchse 39 includes a radial shaft seal 40 which has a sealing lip 41 which rests against the surface of the shaft 7 and thus prevents leakage oil of the pump can escape from the pump housing. Sealing rings of the type discussed here and their function are known, so that will not be discussed further here.
- the press-in bushing 39 can be sealed by means of a sealing element, preferably by means of an O-ring 43.
- the thrust washer 1 is integrated into the sliding bearing 9, which is arranged together with a Einpressbuchse 39 in a pump flange 3.
- the parts introduced into the pump flange 3 are pressed over the press-in bush 39 and are optionally held by a flanged edge of the pump flange 3. Due to the high press-in force of the press-fit bushing 39, it is ensured that the sliding bearing 9 does not rotate in the pump flange 3 despite the frictional forces of the rotating shaft 7. As a result, damage to the pump flange 3, which is preferably made of aluminum, is avoided.
- a bearing plate 45 is provided between the sliding bearing 9 and Einpressbuchse 39. This preferably has a contact surface 47, against which the shaft collar 37 can start.
- the contact washer 45 thus serves in the arrangement of Figure 3, as well as the thrust washer 1, as axial securing.
- At least one wedge-shaped groove 49 is provided, via the leakage oil from a the Shaft 7 receiving portion 51 of the pump flange 3 to the here indicated only recess 23 of the thrust washer 1 passes and from there via the groove 27, the recess 35 and the discharge hole 11 back to a tank or to the suction side of the pump.
- the shaft 7 rotates about a central axis M and thereby transmits frictional forces on the thrust surface 53 on the thrust washer 1.
- the thrust washer 1 can not relative to turn the slide bearing 9. Characterized in that the sliding bearing 9 is pressed in the pump flange 3, and the sliding bearing 9 is prevented from turning.
- leakage oil of the pump reaches the area of the thrust washer 1.
- the leakage oil causes pressures and thus axial forces acting on the shaft 7.
- this leakage oil can be passed through the recess 23 of the thrust washer 1 and further through the groove 27 and the recess 35 of the sliding bearing 9 via the relief hole 11 back to the suction side of the pump or into a tank without the Shaft in the axial direction is acted upon by the leakage oil with impermissibly high forces.
- a wedge-shaped groove 49 is preferably provided in the pump flange 3.
- the advantageous embodiment of a thrust washer 1 proposed here thus effects a minimized through resistance for leakage oil of the pump and thus makes it possible to reduce the axial forces acting on the shaft 7 caused by the leakage oil of the pump.
- the recesses 23 and 25 of the thrust washer 1 can be arbitrarily shaped, but these are preferably matched to the introduced into the sliding bearing grooves 27 and 29, so that leakage oil from the grooves 27,29 can pass through the recess 23,25 without significant resistance .
- the at least one wedge-shaped groove 49 in the pump flange 3 also allows the supply of the leakage oil from a region 51 to the recesses 23 and 25 of the thrust washer 1.
- the integrated anti-rotation device 13 of the thrust washer 1 is ensured that this is not rotated relative to the pump flange 3 and thus damage to the pump flange 3, which preferably consists of aluminum, are avoided.
- the grooves 27 and 29 in the sliding bearing 9 are preferably not formed where the tensile forces of the drive belt act on the shaft 7, as it can come at these points to no viable surface and optionally to a cross-sectional constriction, the leakage oil flow through the grooves 27 and 29 could reduce. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT08749339T ATE550559T1 (de) | 2007-05-22 | 2008-05-06 | Pumpe mit anlaufscheibe |
| EP08749339A EP2153074B1 (de) | 2007-05-22 | 2008-05-06 | Pumpe mit Anlaufscheibe |
| DE112008000751T DE112008000751A5 (de) | 2007-05-22 | 2008-05-06 | Anlaufscheibe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007023630 | 2007-05-22 | ||
| DE102007023630.3 | 2007-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008141726A1 true WO2008141726A1 (de) | 2008-11-27 |
Family
ID=39590379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/003614 Ceased WO2008141726A1 (de) | 2007-05-22 | 2008-05-06 | Anlaufscheibe |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2153074B1 (de) |
| AT (1) | ATE550559T1 (de) |
| DE (1) | DE112008000751A5 (de) |
| WO (1) | WO2008141726A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2941851A (en) * | 1958-01-21 | 1960-06-21 | Thompson Ramo Wooldridge Inc | Radial and thrust bearing |
| US3795428A (en) * | 1972-01-10 | 1974-03-05 | Caterpillar Tractor Co | Two-piece interlocked support/thrust bearings |
| DE19725564A1 (de) * | 1997-05-27 | 1998-12-03 | Mannesmann Rexroth Ag | Radialkolbenpumpe |
| DE10247666A1 (de) * | 2001-10-15 | 2003-04-24 | Luk Fahrzeug Hydraulik | Axialsicherung |
-
2008
- 2008-05-06 EP EP08749339A patent/EP2153074B1/de active Active
- 2008-05-06 WO PCT/EP2008/003614 patent/WO2008141726A1/de not_active Ceased
- 2008-05-06 DE DE112008000751T patent/DE112008000751A5/de not_active Withdrawn
- 2008-05-06 AT AT08749339T patent/ATE550559T1/de active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2941851A (en) * | 1958-01-21 | 1960-06-21 | Thompson Ramo Wooldridge Inc | Radial and thrust bearing |
| US3795428A (en) * | 1972-01-10 | 1974-03-05 | Caterpillar Tractor Co | Two-piece interlocked support/thrust bearings |
| DE19725564A1 (de) * | 1997-05-27 | 1998-12-03 | Mannesmann Rexroth Ag | Radialkolbenpumpe |
| DE10247666A1 (de) * | 2001-10-15 | 2003-04-24 | Luk Fahrzeug Hydraulik | Axialsicherung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112008000751A5 (de) | 2010-04-15 |
| ATE550559T1 (de) | 2012-04-15 |
| EP2153074A1 (de) | 2010-02-17 |
| EP2153074B1 (de) | 2012-03-21 |
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