EP0796154A1 - Taumellagerungsanordnung für hochdruckreinigungsgerät - Google Patents
Taumellagerungsanordnung für hochdruckreinigungsgerätInfo
- Publication number
- EP0796154A1 EP0796154A1 EP95904437A EP95904437A EP0796154A1 EP 0796154 A1 EP0796154 A1 EP 0796154A1 EP 95904437 A EP95904437 A EP 95904437A EP 95904437 A EP95904437 A EP 95904437A EP 0796154 A1 EP0796154 A1 EP 0796154A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor shaft
- cleaning device
- pressure cleaning
- coupling element
- swash plate
- 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.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 22
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 229920003023 plastic Polymers 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004954 Polyphthalamide Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920006260 polyaryletherketone Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920006375 polyphtalamide Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
- F04B1/146—Swash plates; Actuating elements
- F04B1/148—Bearings therefor
Definitions
- the invention relates to a high-pressure cleaning device with a piston pump, the pistons of which are driven by a motor via a swash plate connected in a rotationally fixed manner to the motor shaft of the motor.
- the swash plate is connected in a rotationally fixed manner to the motor shaft in that the motor shaft carries lateral flats and that the swash plate with a complementary central recess extends over the end of the motor shaft so that the edges of the recess on the flat parts of the motor ⁇ shaft is present.
- the motor shaft In order to provide such a lateral flattening of a motor shaft, the motor shaft must be machined in a special operation, for example using a milling tool. Since the motor shaft is generally produced with a turning tool, this means a completely different work step with a different tool, and this additional processing is complex. It is an object of the invention to avoid this additional complex work step in a generic high-pressure cleaning device and to establish a rotationally fixed connection between the swash plate and the motor shaft without the need for additional machining of the motor shaft.
- the tie rod additionally tensions the swash plate in the direction of the longitudinal axis of the motor shaft against the coupling element.
- the tie rod can be a tension screw screwed into the end of the motor shaft.
- the coupling element is a disc that is simply inserted between the swash plate on the one hand and the end face of the motor shaft on the other. It is particularly advantageous if, according to a preferred embodiment, the coupling element is a sleeve which is plugged onto the motor shaft.
- the motor shaft can have the same outer diameter throughout, so any machining in the plug-on area can be omitted.
- the motor shaft could also have a smaller outer diameter in the area covered by the sleeve than in the area adjoining it.
- an additional work step is necessary, but this can be carried out with the same tool and on the same machine as the manufacture of the motor shaft itself, so that such a staged design is essential during manufacture is less expensive than an out-of-round design of the motor shaft, for example by a lateral flattening.
- the sleeve has a step-like protruding circumferential ring shoulder on its free edge. This can serve as a stop for the inner cage of a ball bearing, which is attached to the sleeve-shaped coupling element.
- the coupling element has two opposing lateral flats and that these abut the longitudinal edges of a central elongated hole in the swash plate. It is advantageous if the flats end in a step to which the swash plate is placed by the tie rod.
- FIG. 1 a schematic view of a high-pressure cleaning device with a detailed illustration of the swash plate region cut in the longitudinal direction;
- FIG. 2 shows a longitudinal sectional view of the swash plate area in a modified exemplary embodiment of a high-pressure cleaning device
- Figure 3 a view similar to Figure 2 in a further embodiment of a high-pressure cleaning device.
- the high-pressure cleaning device shown in FIG. 1 comprises a housing 1 in which an electric motor 2 with a motor shaft 3 running in the horizontal direction is arranged. At its free end protruding from the electric motor 2, the motor shaft 3 carries a swash plate 4, in which a pressure plate 6 is rotatably mounted via a ball bearing 5. Pistons 7 of a piston pump, not shown in the drawing, are supported on this and are pressed by the coil springs 8 surrounding the pistons 7 against the pressure plate 6.
- the electric motor 2 is located in a motor housing 9, to which a pump housing 10 which surrounds the swash plate 4, the pistons 7 and the pump (not shown) is connected.
- a transverse wall 11 of the motor housing 9 forms a bearing plate in which the outer cage 12 of a ball bearing 13 is supported, through which the motor shaft 3 is supported in the transverse wall 11.
- a plastic sleeve 14 is plugged onto the end of the motor shaft 3, the bottom 15 of which rests on the end face 16 of the motor shaft 3 and the wall 17 of which surrounds the motor shaft 3 tightly against its circumferential surface.
- the somewhat thicker base 15 of the plastic sleeve 14 carries two opposing lateral flats 18, 19 which run parallel to the longitudinal axis of the motor shaft and each end in a radially projecting step 20 or 21.
- the bottom 15 of the plastic sleeve 14 dips into a complementary, central, elongated hole-shaped recess 22 in the swash plate 4, so that the longitudinal edges of the recess 22 lie tightly against the flats 18, 19 and thus connect the swash plate 4 to the plastic sleeve 14 in a rotationally fixed manner.
- a clamping screw 24 is inserted through a central opening 23 in the base 15 of the plastic sleeve 14 and is screwed into a central internal threaded bore 25 in the end face of the motor shaft 3.
- a metal plate 26, which protrudes laterally above the head of the tensioning screw 24, is placed on the tensioning screw 24 and is together with the head of the tensioning screw 24 and the directly adjoining shaft area of the tensioning screw 24 overmolded in plastic, so that the tensioning screw 24 carries an enlarged plastic head 27 which is supported on the swash plate 4 and this when the tensioning screw 24 is screwed into the motor shaft 3 presses against the steps 20, 21 of the plastic sleeve 14.
- the clamping screw 24 clamps the bottom 15 of the plastic sleeve 14 against the end face 16 of the motor shaft 3 and thus produces a frictional connection in the bearing area of the bottom 15 on the end face 16, through which the plastic sleeve 14 is carried along when the motor shaft 3 is rotated , namely without the need for a positive connection between the motor shaft 3 on the one hand and the plastic sleeve 14 on the other.
- the plastic sleeve 14 thus forms a coupling element between the motor shaft and swash plate, which does not have a positive connection in the transition area to the motor shaft. It is therefore not necessary to make the motor shaft out of round in this area to form a positive connection.
- the coupling element can consist, for example, of high-strength high-temperature materials, for example polyphenylene sulfide (PPS), polyphthalamide (PPA), polyaryl ether ketone (PAEK), or of thermosets. It is advantageous if these plastics have a Shore hardness> 70 Shore D.
- the motor shaft can have a constant outer diameter over its entire length; in the exemplary embodiments in FIGS. 2 and 3, the motor shaft has a section 28 with a smaller outer diameter in the area covered by the plastic sleeve 14 on, but also in this section 28 the motor shaft 3 is circular, so that the section 28 can be produced with the same turning tool with which the motor shaft is produced as a whole.
- the plastic sleeve 14 At its end opposite the base 15, the plastic sleeve 14 carries an annular shoulder 30 which projects radially and extends in the circumferential direction with the formation of a step 29, the step 29 of which forms a stop for the inner cage 31 of the ball bearing 13, which directly surrounds the plastic sleeve 14.
- the motor shaft 3 is thus supported in the ball bearing 13 with the plastic sleeve 14 interposed.
- the plastic sleeve 14 extends in the longitudinal direction beyond the section 28 with a smaller outside diameter and also surrounds part of the motor shaft 3 with a larger outside diameter.
- the plastic sleeve 14 is so short that it is arranged only in section 28 with a smaller outside diameter.
- a seal between the plastic sleeve 14 and the transverse wall 11 is additionally produced in all cases by means of an annular seal 32, so that in this way the interior of the motor housing 9 also faces off from the interior of the pump housing 10 ⁇ is sealed.
- the annular shoulder 30 can carry a metallic outer layer 33, which is formed, for example, by a metal ring 34 which is pushed onto the free end of the plastic sleeve 14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1994/004088 WO1996017694A1 (de) | 1994-12-08 | 1994-12-08 | Taumellagerungsanordnung für hochdruckreinigungsgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0796154A1 true EP0796154A1 (de) | 1997-09-24 |
EP0796154B1 EP0796154B1 (de) | 1999-03-17 |
Family
ID=8165923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95904437A Expired - Lifetime EP0796154B1 (de) | 1994-12-08 | 1994-12-08 | Hochdruckreinigungsgerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US5934887A (de) |
EP (1) | EP0796154B1 (de) |
DE (1) | DE59407979D1 (de) |
DK (1) | DK0796154T3 (de) |
WO (1) | WO1996017694A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1287936B1 (it) * | 1996-07-03 | 1998-08-26 | Lavorwash Srl | Pompa a pistoni assiali |
IT1294447B1 (it) * | 1997-07-09 | 1999-03-24 | Annovi E Reverberi S R L | Sistema di lubrificazione delle pompe per liquidi ad alta pressione con cilindri ad assi verticali |
DE19737540A1 (de) * | 1997-08-28 | 1999-03-04 | Schaeffler Waelzlager Ohg | Taumelantrieb einer Axialkolbenmaschine |
DE19738813B4 (de) * | 1997-09-05 | 2004-05-27 | Ina-Schaeffler Kg | Axialkolbenmaschine |
DE19800680A1 (de) | 1998-01-10 | 1999-07-15 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgerät |
US8328522B2 (en) * | 2006-09-29 | 2012-12-11 | Pax Scientific, Inc. | Axial flow fan |
US20090320625A1 (en) * | 2008-04-28 | 2009-12-31 | Michael Rogler Kildevaeld | Oscillating rotary tool attachment |
US8550376B2 (en) * | 2009-11-17 | 2013-10-08 | Black & Decker Inc. | Paint sprayer |
US8740111B2 (en) * | 2009-11-17 | 2014-06-03 | Black & Decker Inc. | Paint sprayer |
WO2011062986A1 (en) * | 2009-11-17 | 2011-05-26 | Black & Decker Inc. | Paint sprayer |
US8413911B2 (en) * | 2009-11-17 | 2013-04-09 | Black & Decker Inc. | Paint sprayer |
WO2011062992A1 (en) * | 2009-11-17 | 2011-05-26 | Black & Decker Inc. | Quick release mechanism for paint sprayer |
US8651402B2 (en) * | 2009-11-17 | 2014-02-18 | Black & Decker Inc. | Adjustable nozzle tip for paint sprayer |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2402244A (en) * | 1945-02-01 | 1946-06-18 | Robert S Elberty | Pump |
DE2923284A1 (de) * | 1979-06-08 | 1980-12-11 | Wagner Gmbh J | Verfahren und vorrichtung zur leistungsregelung von membranpumpen |
US4388808A (en) * | 1982-02-17 | 1983-06-21 | The United States Of America As Represented By The Secretary Of The Army | Swash plate driving means for cryogenic coolers |
DE3815427C3 (de) * | 1987-05-08 | 1995-08-31 | Lutz Pumpen Gmbh & Co Kg | Elektromotor, insbesondere Antriebsmotor für eine Faß- oder Behälterpumpe |
WO1992016774A1 (de) * | 1991-03-13 | 1992-10-01 | Ina Wälzlager Schaeffler Kg | Taumellagerung |
US5632607A (en) * | 1995-11-01 | 1997-05-27 | Shurflo Pump Manufacturing Co. | Piston and valve arrangement for a wobble plate type pump |
-
1994
- 1994-12-08 DE DE59407979T patent/DE59407979D1/de not_active Expired - Fee Related
- 1994-12-08 EP EP95904437A patent/EP0796154B1/de not_active Expired - Lifetime
- 1994-12-08 DK DK95904437T patent/DK0796154T3/da active
- 1994-12-08 WO PCT/EP1994/004088 patent/WO1996017694A1/de active IP Right Grant
-
1997
- 1997-05-29 US US08/865,389 patent/US5934887A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9617694A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1996017694A1 (de) | 1996-06-13 |
US5934887A (en) | 1999-08-10 |
DK0796154T3 (da) | 2000-06-05 |
DE59407979D1 (de) | 1999-04-22 |
EP0796154B1 (de) | 1999-03-17 |
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