EP0059122B1 - Dispositif hydraulique rotatif à palettes coulissant axialement - Google Patents

Dispositif hydraulique rotatif à palettes coulissant axialement Download PDF

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Publication number
EP0059122B1
EP0059122B1 EP82400159A EP82400159A EP0059122B1 EP 0059122 B1 EP0059122 B1 EP 0059122B1 EP 82400159 A EP82400159 A EP 82400159A EP 82400159 A EP82400159 A EP 82400159A EP 0059122 B1 EP0059122 B1 EP 0059122B1
Authority
EP
European Patent Office
Prior art keywords
vanes
stator
vane
pressure
series
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.)
Expired
Application number
EP82400159A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0059122A1 (fr
Inventor
Jacob Kaegi
Daniel Leroy
José Mallen-Herrero
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.)
Compagnie de Construction Mecanique Sulzer
Original Assignee
Compagnie de Construction Mecanique Sulzer
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compagnie de Construction Mecanique Sulzer filed Critical Compagnie de Construction Mecanique Sulzer
Priority to AT82400159T priority Critical patent/ATE11173T1/de
Publication of EP0059122A1 publication Critical patent/EP0059122A1/fr
Application granted granted Critical
Publication of EP0059122B1 publication Critical patent/EP0059122B1/fr
Expired 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/356—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C2/3568—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member with axially movable vanes

Definitions

  • the invention relates to a rotary hydraulic device.
  • the continuous stator bottom surfaces may have, in a variable number, recesses with rectilinear zones suitable for the desired operation of the device, this number being identical on each stator surface, the recesses being opposite to each other.
  • the sliding pallets with axial sliding are placed in pairs in rotor housings, on either side of a central stator part, the recesses being opposite back to back, on either side of said median stator part and produced on this part, the paddles approaching one another to be applied to the continuous bottom surfaces, with recesses, of said median stator part.
  • a central stator part with bottom surfaces provided on either side of an axis of symmetry, is integral with a fixed shaft portion, the rotor then being mounted in the form of cage around the stator.
  • the present invention relates to a rotary hydraulic device with an internal stator and a cage rotor, external, comprising two series of pallets with axial sliding on either side of a stator bottom part.
  • the stator bottom part is limited to at least one radial branch having, on either side of itself, a range and two ramps on either side of this range, the pallets of the two series being intended to meet in an area devoid of stator bottom, this arrangement limiting as much as possible the effects of friction between the pallets and the stator bottom constituted only by the pads and the ramps.
  • stator radial branches these are arranged in a star and separated by zones devoid of stator background, the pallets of the two series meeting in these zones.
  • Sealing is achieved by contact, end to end and under pressure, of the pallets of the two series of pallets.
  • the sealing is achieved by the lateral contact in overlap, over a certain portion and under pressure, of the pallets of the two series of pallets.
  • the servo-control means between pallets comprises, for each pallet, a finger and a groove on either side of itself, the finger of a pallet being capable of sliding in the groove of the pallet immediately adjacent to so that, for the same direction of movement, the fingers are sometimes driving, sometimes following or vice versa, each ramp being, depending on the direction of movement chosen, either upward or downward.
  • the pressure applied behind each pallet of the two series of pallets is given, separately or in combination, by mechanical, hydraulic, electromagnetic or pneumatic pressure.
  • the pressure applied behind each pallet is produced by a spring.
  • the pressure applied behind each pallet is a hydraulic pressure taken from the high pressure.
  • the number of pallets can be increased between arrival and return.
  • the hydraulic motor according to the invention comprises an internal stator and a cage rotor outside.
  • the rotor in three parts, shows housings (1) intended to receive axially sliding pallets (2).
  • Two series of pallets are arranged opposite in these housings (a single series of pallets is shown in Figures 1 and 2, the second series having been removed for clarity of the drawing and only two pallets (2A) of this second series are visible).
  • the stator (3) shows radial branches (3A) having ascending and descending ramps (4) on either side of flat areas (5).
  • Two ramps (4), one ascending, the other descending and a range (5) are therefore provided on either side of each branch (3A) so as to take account of both the series of pallets. (2) and the series of pallets (2A).
  • the ramps (4) and the pads (5) constitute stator background elements and there may be several branches (3A) arranged in a star and separated by voids.
  • the pallets of the two series (2) and (2A) are intended to meet in these empty zones, devoid of stator background between the branches.
  • the stator could comprise only a single branch (3A) according to a still possible embodiment of the invention.
  • Sealing is achieved by contact, end to end, and under pressure of the pallets (2) and (2A) in opposition (in an embodiment not shown, the pallets (2) and (2A) can overlap in scales on a certain portion, the sealing then being made laterally on this portion and no longer at the end of the pallet).
  • This stator arrangement (3) with star branches (3A) limits as much as possible the friction effects between the vanes and the stator base elements formed by the surfaces (4-5-4) of each stator branch (3A).
  • FIGS. 3 and 4 Another device (FIGS. 3 and 4) makes it possible to further limit the effects of friction between the pallets and each stator branch (3A) due to an approach trajectory (T1) of the pallets on the ascending ramps (4). provision avoiding, moreover, untimely shocks which could otherwise occur between the end of each pallet and the ascending ramps (4). A distance trajectory (T2) of the pallets relative to the descending ramps is also envisaged.
  • the ramps (4), the position of the fingers (6) and the length of the grooves (7) are calculated so that, at a given moment of the sliding of a finger (6) in a groove (7), the latter ci meets the bottom (7A) of the groove and produces a movement (F) of withdrawal of the pallet which immediately follows, relative to the ascending ramp (4) considered then, taking into account a general rotor displacement (F1).
  • a downstream finger acts on an upstream external groove bottom (located towards the outside of the rotor); then an upstream inner groove bottom (located towards the inside of the rotor) acts on a downstream finger.
  • each ramp (4) is, depending on the direction of movement chosen, either upward or downward.
  • each finger (6) can find a passage in the rotor part considered, in a notch (6A ) made in said rotor part ( Figure 6).
  • the contact force necessary for sealing is given by a pressure (mechanical, hydraulic, electromagnetic or even pneumatic) applied behind each pallet of the two series of pallets (2) and (2A).
  • the pressure applied behind the pallets is represented as being produced by a spring (8) this for all the pallets except for one of them which receives, as a variant, at both the pressure of said spring (8) and a hydraulic pressure taken from the active high pressure of the engine, by a channel (9) opening into the space created between the two facing rotor parts (1A) and (1 B) in which are housed (1) for the pallets. All the pallets can be fitted in this way or can only receive hydraulic pressure.
  • a circuit selector (10) is provided behind each pallet so as to take account of the two possible directions of rotation.
  • the high pressure is brought behind each pallet by passing through the pallet itself by an internal channel (11), a circuit selector (10) then being provided in the pallet, at the level from the point of introduction of the pressure (HP) into said pallet.
  • this pressure introduction point (HP) is provided in the front end of the pallet.
  • expansion grooves (12) are produced in a cylindrical portion (3B) of the stator (3), this in order to attenuate the pulsations which can come from pressure variations. These expansion grooves (12) are visible in FIGS. 7, 8 and 9.
  • the pallets whether of the series of pallets (2) or of the series of pallets (2A) are self-centered relative to the axis of the stator.
  • the centering of the pallets relative to the axis of the stator is achieved by a shoulder (13) of the pallets, coming to meet a flange (14) formed on the interior walls of the housing (1) receiving the pallet, the spring (8) and / or the hydraulic actuating pressure acting behind said shoulder (13) of the pallet (FIG. 5).
  • the centering of the pallets relative to the axis of the stator is achieved by a guide ring (15) formed integrally with the portion (3B) of the fixed axis of the stator, the pallets (2 ) and (2A), being, for this purpose, notched at the end (15A) in order to follow the profile of the ring (15).
  • each pallet (2) or (2A) can be provided with two shock noses (16) (in order to take account of the two possible directions of rotation).
  • Each shock nose is shaped like a shoe so that the nose of a pallet and the nose of the facing pallet together form an opening (O) pointing towards the corner (C) formed by the two ascending ramps (4) of a stator branch (3A).
  • the vanes (2) and (2A) are guided longitudinally by grooves (17) formed in the rotor housing (1C) disposed between the lateral rotor parts ( 1A) and (1B) of the three-part rotor. This arrangement improves the sealing of the pallets.
  • the centering of the vanes relative to the axis of the stator is achieved by a rod (18) disposed in the housing (1C).
  • sealing segments (19) can be mounted on the edges of the axially sliding vanes, in order to produce the desired sealing between the high pressure and the low pressure (FIG. 12).
  • the segments (19) can act under the action of the hydraulic pressure introduced, by transfer holes (20), under the segments, in housings (19A) receiving the segments and formed in the pallet.
  • a pre-bonding of the segments can be envisaged by springs (not shown) and the centering of each segment can be obtained by a central pin (also not shown).
  • sealing segments (21) can be provided on the circular lateral face of the end of each stator branch (3A), as shown in FIG. 1.
  • the invention can be applied to motors and pumps as well as to brakes and retarders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Actuator (AREA)
  • Hydraulic Motors (AREA)
  • Soil Working Implements (AREA)
  • Hydraulic Turbines (AREA)
  • Jib Cranes (AREA)
  • Types And Forms Of Lifts (AREA)
EP82400159A 1981-01-30 1982-01-28 Dispositif hydraulique rotatif à palettes coulissant axialement Expired EP0059122B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400159T ATE11173T1 (de) 1981-01-30 1982-01-28 Hydraulik-drehkolbenanlage mit axial gleitenden schiebern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8101832A FR2499166A1 (fr) 1981-01-30 1981-01-30 Dispositif hydraulique rotatif
FR8101832 1981-01-30

Publications (2)

Publication Number Publication Date
EP0059122A1 EP0059122A1 (fr) 1982-09-01
EP0059122B1 true EP0059122B1 (fr) 1985-01-09

Family

ID=9254692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400159A Expired EP0059122B1 (fr) 1981-01-30 1982-01-28 Dispositif hydraulique rotatif à palettes coulissant axialement

Country Status (7)

Country Link
EP (1) EP0059122B1 (da)
AT (1) ATE11173T1 (da)
DE (1) DE3261789D1 (da)
DK (1) DK39982A (da)
ES (1) ES509178A0 (da)
FR (1) FR2499166A1 (da)
IE (1) IE820210L (da)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028197A1 (fr) * 1979-10-30 1981-05-06 COMPAGNIE DE CONSTRUCTION MECANIQUE SULZER Société anonyme dite: Dispositif hydraulique rotatif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1790561A (en) * 1931-01-27 Botaby engine
DE136276C (da) *
US1856523A (en) * 1930-03-27 1932-05-03 Sr Francis Wheatley Rotary engines
US2220375A (en) * 1939-05-26 1940-11-05 Robert Bean Rotary steam engine
US2957429A (en) * 1956-06-01 1960-10-25 James C Fisk Axially shiftable vane pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028197A1 (fr) * 1979-10-30 1981-05-06 COMPAGNIE DE CONSTRUCTION MECANIQUE SULZER Société anonyme dite: Dispositif hydraulique rotatif

Also Published As

Publication number Publication date
DE3261789D1 (en) 1985-02-21
FR2499166B1 (da) 1983-04-15
FR2499166A1 (fr) 1982-08-06
ATE11173T1 (de) 1985-01-15
IE820210L (en) 1982-07-30
ES8302217A1 (es) 1983-01-01
DK39982A (da) 1982-07-31
ES509178A0 (es) 1983-01-01
EP0059122A1 (fr) 1982-09-01

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