EP0048673B1 - Vane-stator wall combination for rotary hydraulic devices - Google Patents

Vane-stator wall combination for rotary hydraulic devices Download PDF

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Publication number
EP0048673B1
EP0048673B1 EP81401457A EP81401457A EP0048673B1 EP 0048673 B1 EP0048673 B1 EP 0048673B1 EP 81401457 A EP81401457 A EP 81401457A EP 81401457 A EP81401457 A EP 81401457A EP 0048673 B1 EP0048673 B1 EP 0048673B1
Authority
EP
European Patent Office
Prior art keywords
pallet
stator
ramps
rotor
assembly according
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
EP81401457A
Other languages
German (de)
French (fr)
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EP0048673A1 (en
Inventor
Jacob Kaegi
Daniel Leroy
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 AT81401457T priority Critical patent/ATE7729T1/en
Publication of EP0048673A1 publication Critical patent/EP0048673A1/en
Application granted granted Critical
Publication of EP0048673B1 publication Critical patent/EP0048673B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts

Definitions

  • the invention relates to rotary hydraulic devices, of the positive displacement pump type, with stator and rotor and axially sliding vanes in the rotor.
  • the Applicant has already produced a rotary hydraulic device of the positive displacement pump type with stator and coaxial rotor and with vanes sliding axially in the rotor, the stator comprising at least one bottom surface having, in a variable number, deformations with rectilinear zones suitable for operation, or recesses, said pallets following said bottom surface, characterized in that said recesses are made on movable elements of the stator, so that the depth of said recesses can be made variable, hence a variable flow rate for the device .
  • the stator S comprises, on the one hand, ramps R and, on the other hand, mobile stator elements M with recess E, ramps and recesses successively making the relay for constant contact with all or part of the front spout of each sliding pallet ( Figure 1).
  • the movable elements M can move in housings L made in the fixed stator part, under the action when stopped and / or during operation, by an external mechanical, hydraulic or magnetic control.
  • the Applicant has also produced a hydrostatic motor with axial sliding vanes in rotor housings and against a continuous surface of a stator bottom with a recess, and comprising an intercommunication circuit between pallets behind them.
  • the pallets are each housed in a housing formed in a rotor opposite a stator bottom S comprising recesses, one of which E has, with respect to an interstitial plane between rotor and stator and with respect to a rotor displacement , a ramp R1 deviating geometrically from said plane, a range P parallel to said plane and a ramp R2 geometrically approaching said plane.
  • Each recess E has a fluid inlet clearance LE and a fluid outlet clearance LS (FIG. 2).
  • the hydraulic motor with axial vanes leads to the production of trapezoidal vanes, this for a necessity of linear contact between the base of the vanes and the face of the stator in the access ramps to the recesses.
  • the contact generators G are oriented towards the center of rotation, and parallel to one another ( Figure 3).
  • the object of the present invention is to alleviate this problem and to facilitate manufacture (pallets, rotor, stator) and, moreover, to improve the resistance of the pallets to wear and impact.
  • the pallet In its movement, the pallet is perfectly in contact with the stator, its movement corresponds to that of the cylindrical milling cutter.
  • cylindrical contact bases are also to collect the end-of-travel thrust due to the acceleration of the pallet caused by its descent or its rise in the recess of the stator.
  • the pallet comprises a cylindrical contact base with the ramps of the stator bottom, according to a radius of curvature corresponding to that of the cutter used for machining the stator bottom, and sealing and plating lips. against the rectilinear zones of the stator bottom, a flat contact part of these lips and a cylindrical contact generator of the base being in the same plane, clearances being provided between the opposite ramps of each recess.
  • the purpose of the lips is to cause the sealing and the veneering of the pallet in the flat and active areas of the stator.
  • the base of the pallet corresponding to the geometry of the stator, it is no longer necessary to produce a trapezoidal pallet body.
  • the parallelepiped shape facilitates the production of pallets and housings in the rotor.
  • a pallet 1 in the embodiment shown in FIGS. 4 to 6, comprises a base made of material or attached, offering the particularity of presenting, on the one hand, two end lobes 2 cylindrical in shape whose radius of curvature corresponds to that of the milling cutter F used for machining the stator base surface with ramps R and ranges P and, on the other hand, of the lips longitudinal 3, the sole 3A of which is capable of bearing on said areas in order to obtain sealing and plating of the pallet.
  • a generator 4 of the cylindrical end lobes 2 is in the plane corresponding to that of the soles 3A.
  • the lips 3 of the pallet are moreover capable, during the rotor movement, of passing, in whole or in part, in clearances L provided between pairs of ramps R1 or R2.
  • the lips 3 are preferably made of a material having its own elasticity which is used to improve their contact against the active areas of the bottom stator surface. This material can, of course, be natural or synthetic.
  • Each lip has a compensating portion 3B exposed to the pressure of the fluid so that this pressure is exerted substantially perpendicular to the stator surface, thus improving the application of the pallet against the stator surface.
  • each lip is hollowed out with a groove 5 allowing it to be mounted on a corresponding rib 6 of the pallet and has a flange 7 allowing it to be immobilized against the pallet using of a plate 8 (FIG. 6) and of threaded studs 9 of which only one is shown diagrammatically in FIG. 6.
  • each lip 3 has a dovetail rib 10 slid into a corresponding groove 11 provided in the pallet. This mounting dispenses with the fixing plate 8 with threaded stud 9.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Milling Processes (AREA)
  • Actuator (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

This invention relates to rotary hydraulic devices of the volumetric or displacement pump type, having a stator and a rotor and vanes axially sliding in the rotor, the stator comprising at least one bottom surface presenting a variable number of recesses therein with ramps and rectilinear zones suited to the operation, said vanes following said bottom surface. In accordance with the invention, the vanes are equipped with an integral or inset base, with end lobes of cylindric shape having a radius of curvature corresponding to that of the milling cutter used for machining the stator. Access to the recesses occurs by means of two ramps corresponding to the lobes of cylindric shape of the vane bases.

Description

L'invention se rapporte à des dispositifs hydrauliques rotatifs, du type pompe volumétrique, à stator et rotor et à palettes coulissantes axialement dans le rotor.The invention relates to rotary hydraulic devices, of the positive displacement pump type, with stator and rotor and axially sliding vanes in the rotor.

La Demanderesse a dejà produit un dispositif hydraulique rotatif du type pompe volumétrique à stator et rotor coaxiaux et à palettes coulissant axialement dans le rotor, le stator comportant au moins une surface de fond présentant, en un nombre variable, des déformations à zones rectilignes appropriées au fonctionnement, ou évidements, lesdites palettes venant suivre ladite surface de fond, caractérisé en ce que lesdits évidements sont réalisés sur des éléments mobiles du stator, de sorte que la profondeur desdits évidements peut être rendue variable, d'où un débit variable pour le dispositif.The Applicant has already produced a rotary hydraulic device of the positive displacement pump type with stator and coaxial rotor and with vanes sliding axially in the rotor, the stator comprising at least one bottom surface having, in a variable number, deformations with rectilinear zones suitable for operation, or recesses, said pallets following said bottom surface, characterized in that said recesses are made on movable elements of the stator, so that the depth of said recesses can be made variable, hence a variable flow rate for the device .

Suivant une forme de réalisation avantageuse, le stator S comprend, d'une part, des rampes R et, d'autre part, des éléments statoriques mobiles M à évidement E, rampes et évidements faisant successivement le relais pour un contact constant avec tout ou partie du bec avant de chaque palette coulissante (figure 1 ).According to an advantageous embodiment, the stator S comprises, on the one hand, ramps R and, on the other hand, mobile stator elements M with recess E, ramps and recesses successively making the relay for constant contact with all or part of the front spout of each sliding pallet (Figure 1).

Les éléments mobiles M peuvent se déplacer dans des logements L pratiqués dans la partie fixe statorique, sous l'action à l'arrêt et/ou en cours de fonctionnement, d'une commande extérieure mécanique, hydraulique ou magnétique.The movable elements M can move in housings L made in the fixed stator part, under the action when stopped and / or during operation, by an external mechanical, hydraulic or magnetic control.

La Demanderesse a également produit un moteur hydrostatique à palettes à coulissement axial dans des logements rotoriques et contre une surface continue de fond statorique à évidement, et comprenant un circuit d'intercommunication entre palettes, derrière celles-ci. Les palettes sont chacune logées dans un logement pratiqué dans un rotor en regard d'un fond statorique S comportant des évidements dont l'un d'eux E présente, par rapport à un plan interstitiel entre rotor et stator et par rapport à un déplacement rotorique, une rampe R1 s'écartant géométriquement dudit plan, une plage P parallèle audit plan et une rampe R2 se rapprochant géométriquement dudit plan. Chaque évidement E présente un dégagement d'entrée de fluide LE et un dégagement de sortie de fluide LS (figure 2).The Applicant has also produced a hydrostatic motor with axial sliding vanes in rotor housings and against a continuous surface of a stator bottom with a recess, and comprising an intercommunication circuit between pallets behind them. The pallets are each housed in a housing formed in a rotor opposite a stator bottom S comprising recesses, one of which E has, with respect to an interstitial plane between rotor and stator and with respect to a rotor displacement , a ramp R1 deviating geometrically from said plane, a range P parallel to said plane and a ramp R2 geometrically approaching said plane. Each recess E has a fluid inlet clearance LE and a fluid outlet clearance LS (FIG. 2).

Le moteur hydraulique à palettes axiales entraîne la réalisation de palettes trapézoïdales, ceci pour une nécessité de contact linéaire entre la base des palettes et la face du stator dans les rampes d'accès aux évidements. Les génératrices de contact G sont orientées vers le centre de rotation, et parallèles les unes par rapport aux autres (figure 3).The hydraulic motor with axial vanes leads to the production of trapezoidal vanes, this for a necessity of linear contact between the base of the vanes and the face of the stator in the access ramps to the recesses. The contact generators G are oriented towards the center of rotation, and parallel to one another (Figure 3).

L'usinage d'un tel stator n'est pas réalisable avec une fraise cylindrique en déplacement circonférentiel. Le procédé rationnel entraîne des défauts géométriques et les génératrices de contact ne sont plus parallèles les unes aux autres.The machining of such a stator is not possible with a cylindrical milling cutter in circumferential movement. The rational process leads to geometric defects and the contact generators are no longer parallel to each other.

La présente invention a pour objet de pallier ce problème et de faciliter la fabrication (palettes, rotor, stator) et, de plus, d'améliorer la tenue des palettes à l'usure et aux chocs.The object of the present invention is to alleviate this problem and to facilitate manufacture (pallets, rotor, stator) and, moreover, to improve the resistance of the pallets to wear and impact.

Dans son déplacement, la palette est parfaitement en contact avec le stator, son déplacement correspond à celui de la fraise cylindrique d'usinage.In its movement, the pallet is perfectly in contact with the stator, its movement corresponds to that of the cylindrical milling cutter.

Les embases de contact cylindrique ont aussi pour objet d'encaisser la poussée de fin de course due à l'accélération de la palette provoquée par sa descente ou sa montée dans l'évidement du stator.The purpose of cylindrical contact bases is also to collect the end-of-travel thrust due to the acceleration of the pallet caused by its descent or its rise in the recess of the stator.

Conformement à l'invention, la palette comprend une embase de contact cylindrique avec les rampes du fond statorique, selon un rayon de courbure correspondant à celui de la fraise utilisée pour l'usinage du fond statorique, et des lèvres d'étanchéité et de placage contre les zones rectilignes du fond statorique, une partie plate de contact de ces lèvres et une génératrice de contact cylindrique de l'embase étant dans un même plan, des dégagements étant prévus entre les rampes opposées de chaque evidement.According to the invention, the pallet comprises a cylindrical contact base with the ramps of the stator bottom, according to a radius of curvature corresponding to that of the cutter used for machining the stator bottom, and sealing and plating lips. against the rectilinear zones of the stator bottom, a flat contact part of these lips and a cylindrical contact generator of the base being in the same plane, clearances being provided between the opposite ramps of each recess.

Un mode particulier de réalisation de l'invention apparait dans les revendications dépendantes.A particular embodiment of the invention appears in the dependent claims.

Les lèvres ont pour objet de provoquer l'étanchéité et le placage de la palette dans les zones plates et actives du stator.The purpose of the lips is to cause the sealing and the veneering of the pallet in the flat and active areas of the stator.

L'embase de la palette répondant à la géométrie du stator, il n'est plus nécessaire de réaliser un corps de palette trapézoïdal. La forme parallélépipédique facilite la réalisation des palettes et des logements dans le rotor.The base of the pallet corresponding to the geometry of the stator, it is no longer necessary to produce a trapezoidal pallet body. The parallelepiped shape facilitates the production of pallets and housings in the rotor.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui va suivre, faite en regard des dessins annexés, sur lesquels:

  • la figure 1 est une vue en perspective d'un élément de stator conforme à l'état de la technique antérieur precité en premier lieu;
  • la figure 2 est une vue développée d'un moteur hydrostatique selon un évidement de fond statorique et une phase de fonctionnement conforme à l'état de la technique antérieur précité en deuxième lieu;
  • la figure 3 est un schéma représentatif d'une palette trapézoïdale pour moteur hydraulique à palette à coulissement axial;
  • la figure 4 est une vue en perspective montrant une palette selon l'invention en concordance avec des rampes et une plage de fond statorique;
  • la figure 5 est une vue en coupe d'une lèvre de palette selon l'invention;
  • la figure 6 est une vue en coupe partielle représentant le montage de deux lèvres longitudinales de palette selon l'invention; et
  • la figure 7 est une vue en coupe d'une variante de lèvre de palette selon l'invention.
Other characteristics and advantages of the present invention will emerge from the description which follows, given with reference to the appended drawings, in which:
  • Figure 1 is a perspective view of a stator element according to the aforementioned prior art first;
  • Figure 2 is a developed view of a hydrostatic motor according to a stator bottom recess and an operating phase in accordance with the aforementioned prior art secondly;
  • FIG. 3 is a diagram representing a trapezoidal pallet for a hydraulic motor with an axial sliding pallet;
  • Figure 4 is a perspective view showing a pallet according to the invention in accordance with ramps and a stator bottom range;
  • Figure 5 is a sectional view of a pallet lip according to the invention;
  • Figure 6 is a partial sectional view showing the mounting of two longitudinal pallet lips according to the invention; and
  • Figure 7 is a sectional view of an alternative pallet lip according to the invention.

Dans la forme de réalisation représentée aux figures 4 à 6, une palette 1 selon l'invention, de forme générale parallélépipédique, comprend une embase venue de matière ou rapportée offrant la particularité de présenter, d'une part, deux lobes d'extrémité 2 de forme cylindrique dont le rayon de courbure correspond à celui de la fraise F utilisée pour l'usinage de la surface de fond statorique à rampes R et plages P et, d'autre part, des lèvres longitudinales 3 dont la semelle 3A est susceptible de porter sur lesdites plages afin d'obtenir étanchéité et placage de la palette. Il doit être remarqué qu'une génératrice 4 des lobes d'extrémité cylindrique 2 se trouve dans le plan correspondant à celui des semelles 3A.In the embodiment shown in FIGS. 4 to 6, a pallet 1 according to the invention, of generally parallelepipedal shape, comprises a base made of material or attached, offering the particularity of presenting, on the one hand, two end lobes 2 cylindrical in shape whose radius of curvature corresponds to that of the milling cutter F used for machining the stator base surface with ramps R and ranges P and, on the other hand, of the lips longitudinal 3, the sole 3A of which is capable of bearing on said areas in order to obtain sealing and plating of the pallet. It should be noted that a generator 4 of the cylindrical end lobes 2 is in the plane corresponding to that of the soles 3A.

Les lèvres 3 de la palette sont susceptibles, par ailleurs, au cours du mouvement rotorique de passer, tout ou en partie, dans des dégagements L prévus entre des paires de rampes R1 ou R2.The lips 3 of the pallet are moreover capable, during the rotor movement, of passing, in whole or in part, in clearances L provided between pairs of ramps R1 or R2.

Les lèvres 3 sont, de préférence, réalisées en une matière ayant une élasticité propre qui est mise à profit pour améliorer leur contact contre les plages actives de la surface statorique de fond. Cette matière peut, bien entendu, être naturelle ou synthétique.The lips 3 are preferably made of a material having its own elasticity which is used to improve their contact against the active areas of the bottom stator surface. This material can, of course, be natural or synthetic.

Chaque lèvre présente une portion compensatrice 3B exposée à la pression du fluide pour que cette pression s'exerce sensiblement perpendiculairement à la surface statorique, améliorant ainsi l'application de la palette contre la surface statorique.Each lip has a compensating portion 3B exposed to the pressure of the fluid so that this pressure is exerted substantially perpendicular to the stator surface, thus improving the application of the pallet against the stator surface.

Dans la forme de réalisation représentée plus particulièrement sur les figures 5 et 6, chaque lèvre est creusée d'une rainure 5 permettant son montage sur une nervure 6 correspondante de la palette et présente un rebord 7 permettant son immobilisation contre la palette à l'aide d'une plaque 8 (figure 6) et de goujons filetés 9 dont un seul est schématisé à la figure 6.In the embodiment shown more particularly in Figures 5 and 6, each lip is hollowed out with a groove 5 allowing it to be mounted on a corresponding rib 6 of the pallet and has a flange 7 allowing it to be immobilized against the pallet using of a plate 8 (FIG. 6) and of threaded studs 9 of which only one is shown diagrammatically in FIG. 6.

Dans la variante de la figure 7, chaque lèvre 3 comporte une nervure en queue d'aronde 10 glissée dans une gorge correspondante 11 prévue dans la palette. Ce montage dispense de la plaque de fixation 8 à goujon fileté 9.In the variant of Figure 7, each lip 3 has a dovetail rib 10 slid into a corresponding groove 11 provided in the pallet. This mounting dispenses with the fixing plate 8 with threaded stud 9.

Claims (6)

1. A pallet and stator bottom assembly for hydraulic rotary devices of the volumetric pump type, with coaxial stator and rotor and axially slidable pallets in the rotor, the stator comprising at least one bottom surface comprising a variable number of recesses therein with ramps and rectilinear zones suitable for the operation, said pallets (1) following said bottom surface, characterized in that the pallet (1) comprises a base (2) for cylindric contact with the ramps (R1, R2) of the stator bottom, according to a radius of curvature corresponding to that of the milling cutter used for machining the stator bottom, and lips (3) for tightness and application against the rectilinear zones of the stator bottom, with a flat portion (3A) of contact of such lips and a cylindric contact generatrix (4) of the base being in one and the same plane, with clearances being provided between the opposite ramps (R1, R2) in each recess.
2. A pallet and stator bottom assembly according to claim 1, characterized in that the pallet (1) is a parallelepiped.
3. A pallet and stator bottom assembly according to any one of claims 1 and 2, characterized in that the pallet comprises two opposite tightness and application lips (3).
4. A pallet and stator bottom assembly according to any one of claims 1 to 3, characterized in that each lip (3) is formed with a compensating portion (3B) exposed to fluid pressure so that such pressure can be exerted substantially perpendicular to the stator surface.
5. A pallet and stator bottom assembly according to any one of claims 1 to 4, characterized in that each lip is formed with a groove (5) therein for the mounting thereof on a corresponding rib (6) in the pallet (1) and comprises an edge portion (7) for securement thereof against the pallet by clamping means (8,9).
6. A pallet and stator bottom assembly according to any one of claims 1 to 4, characterized in that each lip (3) comprises a dove tail rib (10) slidable into a corresponding groove (11) formed in the pallet (1).
EP81401457A 1980-09-19 1981-09-18 Vane-stator wall combination for rotary hydraulic devices Expired EP0048673B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81401457T ATE7729T1 (en) 1980-09-19 1981-09-18 VALVE STATOR WALL COMBINATION FOR HYDRAULIC ROTARY PISTONS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8020208 1980-09-19
FR8020208A FR2490747A1 (en) 1980-09-19 1980-09-19 PALLET-STATOR BASE ASSEMBLY FOR ROTATING HYDRAULIC DEVICES

Publications (2)

Publication Number Publication Date
EP0048673A1 EP0048673A1 (en) 1982-03-31
EP0048673B1 true EP0048673B1 (en) 1984-05-30

Family

ID=9246099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401457A Expired EP0048673B1 (en) 1980-09-19 1981-09-18 Vane-stator wall combination for rotary hydraulic devices

Country Status (9)

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US (1) US4425088A (en)
EP (1) EP0048673B1 (en)
JP (1) JPS5783688A (en)
AT (1) ATE7729T1 (en)
BR (1) BR8105989A (en)
DE (1) DE3163898D1 (en)
DK (1) DK415581A (en)
ES (1) ES505607A0 (en)
FR (1) FR2490747A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605360B1 (en) * 1986-10-16 1991-04-12 Sulzer Ag PALLET FOR HYDROSTATIC COMPONENT AND HYDROSTATIC COMPONENT COMPRISING SAME
US7479001B2 (en) * 2006-03-03 2009-01-20 Stroganov Alexander A Rotor sliding-vane machine with adaptive rotor
US20100319653A1 (en) * 2009-06-19 2010-12-23 Honeywell International Inc. Reduced friction rotary combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1553021A1 (en) * 1964-01-02 1969-10-16 Breinlich Dr Richard Wing cell machine with wings mounted on their central part

Also Published As

Publication number Publication date
ES8206773A1 (en) 1982-08-16
JPS5783688A (en) 1982-05-25
US4425088A (en) 1984-01-10
ES505607A0 (en) 1982-08-16
FR2490747B1 (en) 1982-12-17
BR8105989A (en) 1982-06-08
EP0048673A1 (en) 1982-03-31
ATE7729T1 (en) 1984-06-15
DE3163898D1 (en) 1984-07-05
DK415581A (en) 1982-03-20
FR2490747A1 (en) 1982-03-26

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