EP0632200A1 - Dispositif d'entraînement pour machine à disque en mutation - Google Patents

Dispositif d'entraînement pour machine à disque en mutation Download PDF

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Publication number
EP0632200A1
EP0632200A1 EP94109453A EP94109453A EP0632200A1 EP 0632200 A1 EP0632200 A1 EP 0632200A1 EP 94109453 A EP94109453 A EP 94109453A EP 94109453 A EP94109453 A EP 94109453A EP 0632200 A1 EP0632200 A1 EP 0632200A1
Authority
EP
European Patent Office
Prior art keywords
swash plate
shaft
drive shaft
bearing part
drive
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
Application number
EP94109453A
Other languages
German (de)
English (en)
Other versions
EP0632200B1 (fr
Inventor
Thomas Heng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB AG
Original Assignee
KSB AG
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Filing date
Publication date
Application filed by KSB AG filed Critical KSB AG
Publication of EP0632200A1 publication Critical patent/EP0632200A1/fr
Application granted granted Critical
Publication of EP0632200B1 publication Critical patent/EP0632200B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C9/00—Oscillating-piston machines or pumps
    • F04C9/005—Oscillating-piston machines or pumps the piston oscillating in the space, e.g. around a fixed point

Definitions

  • the invention relates to a drive device for a swash plate machine, in which a swash plate is in section contact with the side walls of a conveying space and bears sealingly against the latter, so that independent conveying chambers are formed, and in which the swash plate has a swash plate shaft inclined to a drive shaft by one Wobble point is moved.
  • a swashplate machine works according to the following principle.
  • a swash plate shaft describing a cone about the central axis of the drive shaft, is moved. Due to the inclined position of the swash plate shaft with respect to the center axis of the drive shaft, a swash plate standing perpendicular to the swash plate shaft executes a wobble movement around a wobble point lying on the center axis of the drive shaft.
  • a separating web penetrating the swash plate and extending in the axial direction of the drive shaft divides the delivery chamber into a suction-side and a pressure-side part. Due to the swash plate moving along the side walls of the delivery chamber, two rotating delivery chambers with variable volume are created within the delivery room. The swashplate ideally abuts the side walls of the delivery chamber piece by piece.
  • a swash plate pump in which the swash plate is arranged in a delivery chamber, the housing wall surfaces of which are opposite to the swash plate and are conical.
  • the plane of the delivery chamber runs perpendicular to the drive shaft plane. Due to the swash plate arranged obliquely in the conveying space, the conveying chambers of variable volume are formed on both sides of the swash plate.
  • the swash plate moving in the delivery chamber is designed as a circular ring which is arranged with its inner diameter on a spherical surface of a swash plate hub. This spherical surface is mounted in correspondingly shaped counter surfaces of the pump housing enclosing the delivery chamber.
  • the swash plate shaft is supported in a rotor connected to the drive shaft.
  • the rotor is provided with an eccentric bore lying obliquely to the central axis of the drive shaft, in which two ball bearings are arranged which rest with their outer races on the wall of the bore and which guide one end of the swash plate shaft.
  • the end of the swashplate shaft describes a circle around the central axis of the drive shaft and the swashplate wobbles around the wobble point.
  • the drive axis is formed with an inclined section which describes a uniform double cone when the drive shaft rotates.
  • the center of the double cone is the wobble point.
  • a hub is supported by needle bearings on the inclined section to which the swash plate is connected.
  • the object of the invention is therefore to bring the swash plate into contact with the side walls of the delivery chamber in such a way that a good system is obtained and maintained during operation of the swash plate machine, so that the gap losses are small and tension is avoided.
  • the swashplate shaft is movably connected to the drive shaft in order to change its inclined position and is deflected into one of the largest possible inclined positions by one or more spring elements which are supported on the one hand on the swashplate shaft and on the other hand on the drive shaft.
  • the spring element Due to its flexibility, the spring element allows for the compensation of dimensional deviations and the rolling over of small foreign bodies without high forces or tension occurring.
  • the development according to claim 2 provides for connecting the drive shaft to the swash plate shaft via an articulated joint.
  • the spring element extends over the articulated joint and lies essentially parallel to the drive shaft.
  • the torque is transmitted to the swashplate shaft via the articulated joint.
  • the wobble point of the swashplate lies on the fold line of the articulated joint.
  • the development according to claim 6 provides a radially movable bearing part for mounting the swash plate shaft in the drive shaft, the bearing part being radially deflected by a spring element arranged essentially perpendicular to the drive shaft.
  • the guidance of the bearing part in the radial direction prevents the same from evading under increased driving force.
  • the bearing part can additionally be rotated about the central axis of the bolts.
  • the invention can also be advantageously applied to swash plate pumps.
  • swashplate machines operated as a turbine for example for measuring the flow rate.
  • a swash plate pump in which a swash plate shaft 1 is moved about a swash point 3 by a drive shaft 2, describing a double-conical surface.
  • the wobble point 3 coincides with the center of the Spherical surface 4 of the swash plate hub 5 and the spherical inner surface 6 of a ring 7 together.
  • These surfaces, together with conical side walls 8, 9 of a first, drive-side side part 10 having a central opening and a second side part 11 delimit a conveying chamber 12.
  • the central opening in the first side part 10 on the drive side serves for the implementation of the swash plate shaft 1.
  • the swash plate shaft 1 can be in different ways, e.g. Welding, screwing or the like, be connected to the swash plate hub 5.
  • the swash plate hub 5 can be made in one piece to achieve the greatest possible precision. Of course, a construction composed of several parts is also possible.
  • the outer edge of the swash plate 13 is preferably designed with a contour corresponding to the spherical inner surface 6 in order to achieve a dynamic seal.
  • the delivery chamber 12 is sealed against the interior of the pump by dynamic sealing between the spherical surface 4 and the corresponding spherical surfaces 14, 15 of the side parts 10, 11.
  • the swash plate hub 5 can also be supported at these points.
  • One end of the swash plate shaft 1 is guided in a bearing part 16 arranged at the end of the drive shaft 2 by means of a bearing.
  • 2 and 3 show an enlarged section of the drive train.
  • the outer race 17a of the bearing is located in the bearing part 16, the inner race 17b on the swash plate shaft 1.
  • the bearing part 16 is guided laterally and can be moved in the radial direction in the manner of a slide. In order to transmit the torque, the bearing part 16 is supported laterally against side walls 2a, 2b of the drive shaft 2.
  • the bearing part 16 is flattened on the contact surface of the spring element 18.
  • the spring element 18 is arranged perpendicular to the swash plate shaft 1 in the exemplary embodiment, but is not limited to this arrangement. Since the drive torque is transmitted transversely to the direction of action of the spring element 18 on the bearing part 16 held in the drive shaft 2, high drive torques can be transmitted.
  • the bearing part 16 is arranged substantially perpendicular to the central axis of the swash plate shaft 1. If the inclined position of the swashplate shaft changes around the wobble point 3, it is necessary for the drive train to be in a tension-free state that the position of the bearing part 16 changes.
  • the use of a roller bearing for guiding the swash plate shaft 1 in the bearing part 16 permits compensation in the axial direction of the swash plate shaft 1.
  • the bearing part 16 is provided on a side opposite each of the side walls 2a, 2b with a groove 31 into which a bolt arranged in the side walls 2a, 2b is provided 32 engages and serves as a pivot bearing.
  • the bolt 32 is inserted from the inside into the side walls 2a, 2b and has a head part widened in relation to a shaft.
  • the bearing part 16 When the bearing part 16 is mounted, the loosely inserted bolt 32 is secured. An additional screw connection is not necessary.
  • the bearing part 16 With the bolts 32, the bearing part 16 has two degrees of freedom of movement.
  • the groove 31 has the shape of an L, with one leg opening towards the drive shaft.
  • the rotation of the drive shaft 2 leads the end of the swash plate shaft 1, which is supported in the bearing part 16, on a circular path around the central axis of the drive shaft 2.
  • the swash plate shaft 1 tumbles around the swash point 3 without rotating itself about its own central axis and describes the outer surface of a double cone , whose common tip is at wobble point 3.
  • Rolling over a foreign body causes the following:
  • the swash plate 5 lifts off one of the side walls 8, 9, whereby the inclined position of the swash plate shaft 1 is reduced.
  • the reduction in the inclined position reduces the radial deflection of the end of the swash plate shaft 1 guided in the bearing part 16 and the bearing part 16 is pressed against the spring force of the spring element 18 toward the support wall 2c. Even minor mechanical deviations of the components themselves are compensated for without tension.
  • the swash plate shaft 19 is connected in a rotationally fixed manner to the drive shaft 21 via an articulated joint 20 which rotates.
  • the kink point passes through the wobble point 22 with its kink axis.
  • the swash plate shaft 19 is supported in a swash plate hub 23 by means of ball bearings 24, 25.
  • the ball bearings 24, 25 are held on the swash plate shaft 19 by shaft nuts 33.
  • Other spring shapes can also be used as the spring element 30 to generate the kink, for example a hairpin spring.
  • the swash plate 26 can lift off the side walls 27, 28 against the spring force of the spring element 30 in order to roll over foreign bodies or to compensate for mechanical inaccuracies.
  • the swash plate hub 23 and a drive shaft guide 36 are supported against one another via the toothing of a ring gear 34 connected to the swash plate hub 23 and a toothed ring 35 connected to the drive shaft guide 36 or the housing of the swash plate machine.
  • the ring gears 35, 36 are at an angle to each other and are always only in sections. Twisting can also be prevented by using a torsionally rigid bellows.
  • the swashplate 13 lies; 26 on the side walls 8, 9; 27, 28 of the delivery chamber 12; 29 on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP94109453A 1993-07-02 1994-06-18 Dispositif d'entraînement pour machine à disque en mutation Expired - Lifetime EP0632200B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4322077 1993-07-02
DE4322077A DE4322077A1 (de) 1993-07-02 1993-07-02 Antriebsvorrichtung für eine Taumelscheibenmaschine

Publications (2)

Publication Number Publication Date
EP0632200A1 true EP0632200A1 (fr) 1995-01-04
EP0632200B1 EP0632200B1 (fr) 1996-12-11

Family

ID=6491814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94109453A Expired - Lifetime EP0632200B1 (fr) 1993-07-02 1994-06-18 Dispositif d'entraînement pour machine à disque en mutation

Country Status (4)

Country Link
US (1) US5435705A (fr)
EP (1) EP0632200B1 (fr)
JP (1) JPH081177B2 (fr)
DE (2) DE4322077A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107461332A (zh) * 2017-06-30 2017-12-12 倪春堂 一种油气混输泵

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045226A1 (de) * 2005-09-22 2007-03-29 Braun Gmbh Elektrische Zahnbürste
KR100745563B1 (ko) * 2006-02-15 2007-08-02 나필찬 유량 가변형 압축식 유체기계
CN102171458B (zh) 2008-10-23 2015-06-10 斯沃什泵技术有限公司 用于可压缩流体的集成泵
SE535608C2 (sv) * 2011-01-10 2012-10-16 Manomeka Ab Kompressor med lågfriktionstätning
CN103591024A (zh) * 2013-12-06 2014-02-19 余宏伟 圆盘环压式多功能广谱介质泵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511776A (en) * 1938-02-21 1939-08-24 Andre Dutrey Improvements in and relating to rotary pumps
DE1090966B (de) * 1954-10-29 1960-10-13 Richard T Cornelius Taumelscheibenpumpe
GB874838A (en) * 1956-08-21 1961-08-10 James Anstruther Hughes Bowman Improvements in or relating to rotary engines or pumps
GB988282A (en) * 1961-01-31 1965-04-07 Muller Jacques Improvements in and relating to oscillating-disc volumetric pumps or fluid meters
DE1277673B (de) * 1965-11-12 1968-09-12 Reginald Clarence Ford Pumpe mit Nutationsscheibe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE166879C (fr) *
FR341903A (fr) * 1904-04-06 1904-08-23 Pierre Samain Pompe à piston oscillant
FR997334A (fr) * 1945-07-12 1952-01-04 Dispositif de transmission d'énergie du type dit à piston-disque oscillant
US2475096A (en) * 1945-10-09 1949-07-05 James W F Holl Beveled interengaging impellers supercharger or blower
DE1551082C3 (de) * 1966-07-13 1973-12-06 Giancarlo 8000 Muenchen Caoduro Schrägachsige Rotationskolbenmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511776A (en) * 1938-02-21 1939-08-24 Andre Dutrey Improvements in and relating to rotary pumps
DE1090966B (de) * 1954-10-29 1960-10-13 Richard T Cornelius Taumelscheibenpumpe
GB874838A (en) * 1956-08-21 1961-08-10 James Anstruther Hughes Bowman Improvements in or relating to rotary engines or pumps
GB988282A (en) * 1961-01-31 1965-04-07 Muller Jacques Improvements in and relating to oscillating-disc volumetric pumps or fluid meters
DE1277673B (de) * 1965-11-12 1968-09-12 Reginald Clarence Ford Pumpe mit Nutationsscheibe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107461332A (zh) * 2017-06-30 2017-12-12 倪春堂 一种油气混输泵
CN107461332B (zh) * 2017-06-30 2019-02-05 倪春堂 一种油气混输泵

Also Published As

Publication number Publication date
JPH081177B2 (ja) 1996-01-10
US5435705A (en) 1995-07-25
JPH07151069A (ja) 1995-06-13
EP0632200B1 (fr) 1996-12-11
DE59401239D1 (de) 1997-01-23
DE4322077A1 (de) 1995-01-12

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