EP0130912A1 - Swash plate mechanism, especially for the drive of a pump - Google Patents

Swash plate mechanism, especially for the drive of a pump Download PDF

Info

Publication number
EP0130912A1
EP0130912A1 EP84401377A EP84401377A EP0130912A1 EP 0130912 A1 EP0130912 A1 EP 0130912A1 EP 84401377 A EP84401377 A EP 84401377A EP 84401377 A EP84401377 A EP 84401377A EP 0130912 A1 EP0130912 A1 EP 0130912A1
Authority
EP
European Patent Office
Prior art keywords
casing
pistons
oblique plate
longitudinal axis
mechanism 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.)
Granted
Application number
EP84401377A
Other languages
German (de)
French (fr)
Other versions
EP0130912B1 (en
Inventor
Francis Mourrier
Roger Badaut
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.)
Areva NP SAS
Original Assignee
Creusot Loire SA
Framatome SA
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 Creusot Loire SA, Framatome SA filed Critical Creusot Loire SA
Priority to AT84401377T priority Critical patent/ATE29768T1/en
Publication of EP0130912A1 publication Critical patent/EP0130912A1/en
Application granted granted Critical
Publication of EP0130912B1 publication Critical patent/EP0130912B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04B1/145—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F01B3/0017—Component parts, details, e.g. sealings, lubrication
    • F01B3/0023—Actuating or actuated elements
    • F01B3/0026—Actuating or actuated element bearing means or driving or driven axis bearing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F01B3/0017—Component parts, details, e.g. sealings, lubrication
    • F01B3/0029—Casings, housings
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18336—Wabbler type

Definitions

  • the subject of the invention is an oblique plate mechanism which can be used in particular for controlling a pump.
  • Such mechanisms which have been known for a long time, include, inside a casing, a control part rotatably mounted about a longitudinal axis and on which is formed a journal axis of an oblique plate inclined relative to the 'longitudinal axis and bearing on the control part by means of an axial stop.
  • the pump comprises a plurality of pistons distributed around the longitudinal axis and sliding parallel to the latter in cylindrical bodies formed in a cylinder head fixed on one of the bases of the casing in which the mechanism is placed. Each piston is individually connected to the oblique plate, for example by means of an articulated rod and the oblique plate is locked in rotation.
  • the oblique plate is animated with an oscillating movement around the point where its axis of journalling intersects the longitudinal axis of rotation and which therefore constitutes a center of oscillation. Since the oblique plate is locked in rotation, this oscillation movement determines an alternating longitudinal movement of the pistons by means of articulated rods. Longitudinal forces are therefore developed by the pistons between the cylinder head fixed on the rear bottom of the casing and the oblique plate which is supported on the control part, the latter taking support in turn, by means of a stop. axial, on the front bottom of the casing. Thus, all of the forces must be supported by the casing, more particularly by the two bottoms thereof and the side wall which connects them together. When the pump is of high power, the casing must withstand significant efforts and we are led to very heavy and bulky achievements.
  • the subject of the invention is improvements to this arrangement which allow the casing to resist alternating forces even in the case of a high power pump while keeping a relatively light structure.
  • the two casing bottoms are connected on their periphery by a plurality of additional lateral tie rods parallel to the central axis, bearing on the two casing bottoms and subjected to a prestressing tension capable of compensating for the forces developed by the pistons, in cooperation with the central tie rod, each piston corresponding either to a single lateral tie rod, centered in the radial plane passing through the central axis and the sliding axis of the piston, or to a pair of lateral tie rods placed symmetrically on either side of the corresponding radial plane.
  • the rotary control part bears on the front bottom of the casing along a circumference centered on the longitudinal axis and passing through the axes of the pistons, by means of a circular rib formed on a fixed transverse plate placed at the front end of the central spacer column.
  • FIG. 1 there is shown the assembly of the pump 1 and the control mechanism placed inside a casing 2 and consisting of a control part 3 rotatably mounted around an axis 30 on a column hollow 4 and on which an oblique plate 5 is mounted journalling about an axis 50 inclined at an angle (i) relative to the longitudinal axis 30 and cutting the latter into a center of oscillation 0.
  • the pump 1 is constituted by a plurality of pistons 6 slidingly mounted each along an axis 60 parallel to the longitudinal axis 30, at inside cylindrical bodies 61 integral with the cylinder head 11 of the pump.
  • each piston 6 is integral with a slide 62 guided along the axis 60 inside a cylindrical body 63.
  • Each slide 62 is connected to the oblique plate 5 by a connecting rod 64 provided with its two ends of two ball joints 65 and 66 for connection, respectively, with the oblique plate 5 and with the slide 62.
  • the oblique plate. 5 is mounted pivoting around the axis 50 on a bearing 51 mounted on an inclined bearing 31 provided on the control part 3.
  • the latter is also provided with an inclined bearing surface 32 placed in a plane perpendicular to the axis 50 and on which the oblique plate 5 is supported by means of an axial stop 52.
  • control part 3 is also supported by means of an axial stop 33 on a transverse plate 41 formed at the end of the column 4 opposite the pump 1 and perpendicular to the axis 30, the column 4 also carrying a bearing 34 for axially guiding the control part 3.
  • the centers of the ball joints 65 connecting the connecting rod 64 with the plate 5 are placed at the meeting points of the axes 60 of sliding of the pistons 6 with a plane perpendicular to the inclined axis 50 and passing through the center of oscillation 0, for the two extreme angular positions of the oblique plate for which the axis 50 is in the radial plane passing through the longitudinal axis 30 and the axis 60 of the corresponding piston.
  • the centers of the ball joints 66 for connection with the slides 62 are also placed on the sliding axes 60.
  • the thrust of the pistons 6 is therefore collected by the oblique plate 5 and transmitted to the control part 3 then to the fixed transverse plate 41 respectively by the axial stops 52 and 33.
  • a tie rod 8 which passes to inside the central tubular column 4 and is provided at its two ends with support heads 81 and 82, respectively on the rear bottom 21 and on the front bottom 22.
  • the latter has the shape of a box in the center which is placed an axial column 23 which is in the extension of the spacer column 4 and on which the latter bears on the side of the pump.
  • the casing 2 is further provided with a plurality of lateral tie rods 80, placed on its periphery, to take up the forces developed by the pistons each in cooperation with the central tie rod and which are distributed at this effect symmetrically with respect to the radial planes passing through the longitudinal axis 30 and through the axes 60 of the pistons 6.
  • Each piston 6 can therefore correspond either to a single lateral tie rod 83 placed in the corresponding radial plane P, or to two lateral tie rods 85 placed symmetrically on either side of the corresponding radial plane.
  • the casing 2 comprises two upper lateral tie rods 83 centered in the radial planes corresponding to two pistons 6a and 6b while the forces developed by the third piston 6c are taken up, in cooperation with the central tie rod 8, by two other lower tie rods 85 placed symmetrically on either side of the corresponding radial plane P 1 .
  • each tie rod 80 is provided at its ends with heads 87 bearing on the external faces of the two bottoms 21 22 of the casing and pass through a spacer column 24 constituting the casing and interposed between the two bottoms so as to prevent them from coming together under the action of the prestressing tension when the thrust of the corresponding piston does not not exercise in reverse.
  • the prestressing tensions and consequently the cross sections of the tie rods will be determined as a function of the forces developed by the pistons and of the distances from the axes 60 of the latter relative to the lateral tie rods 80 and to the central tie rod 8.
  • the entire casing 2 is in mechanically welded construction and, thanks to the solutions adopted, can be relatively light.
  • Each bottom has the shape of a box made up of transverse plates connected by spacers. These are constituted by the central column 23 and by the lateral columns 24 in the case of the rear bottom 21 which constitutes the fixed base of the installation on which the pump 1 is fixed on one side and the control mechanism 3, 4, 5.
  • the front bottom 22 is formed of a box consisting of two side plates connected to each other by spacer walls 25 placed around. orifices 26 for passage of the tie rods 80, in the extension of the walls of the columns 24 of the corresponding tie rod.
  • the cylinder head 1 is advantageously provided with a fixing plate 12 which is applied to the external face 27 of the rear bottom 21 and on which the heads of the central tie rod 8 and of the lateral tie rods 80 rest, which pass through holes in the plate 12.
  • This arrangement therefore makes it possible to easily dismantle, by loosening the tie rods, the assembly of the pump 1.
  • the hydraulic body casing assembly therefore forms a pre-stressed rigid block, easily removable, and well resistant to strong internal thrusts of the pistons.
  • the axial support of the control mechanism on the front bottom 22 takes place along a circumference centered on the longitudinal axis 30 and of radius R equal to the distance between the axis 30 and axes 60 of the pistons.
  • the transverse plate 41 is provided, on the bottom side 22, with a circular support rib 44 having an average radius equal to R.
  • a disc 25 forming a shim is thick interposed between the support rib 44 and the internal face of the front bottom 22 and the central column 4 rests on the end of the axial column 23 of the front bottom 21 by means of an adjustable stop which can be constituted for example by a nut 45 screwed on a thread formed at the end of the column 4 facing the pump 1.
  • the invention is not limited to the details of the embodiment which has just been described by way of simple example and which could be modified by using equivalent means.
  • This is the case in particular of the physical production of the mechanism, the pump and the casing.
  • it could consist of a simple plate provided on its external face with reinforcing ribs passing through the longitudinal axis and through the axes of the lateral tie rods and of the corresponding pistons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

A swash plate mechanism, especially for high power swash plate pumps, incorporating, inside a casing (2) bounded by two end walls (21, 22), a driving component (3) mounted so as to rotate about a longitudinal axis (30), an inclined plate (5) bearing upon the driving component (3) and mounted so as to swivel on the latter about an inclined axis (50). The two end walls (21, 22) of the casing are joined at their periphery by additional lateral tie rods (80) parallel to the central tie rod (8), bearing upon the two end walls (21, 22) of the casing (2) and subjected to a preload tension in order to carry the forces developed by the pistons (6) in co-operation with the central tie rod.

Description

L'invention a pour objet un mécanisme à plateau oblique utilisable notamment pour la commande d'une pompe. De tels mécanismes, connus depuis longtemps, comprennent, à l'intérieur d'un carter, une pièce de commande montée rotative autour d'un axe longitudinal et sur laquelle est ménagé un axe de tourillonnement d'un plateau oblique incliné par rapport à l'axe longitudinal et prenant appui sur la pièce de commande par l'intermédiaire d'une butée axiale. La pompe comprend une pluralité de pistons répartis autour de l'axe longitudinal et coulissant parallèlement à celui-ci dans des corps cylindriques ménagés dans une culasse fixée sur l'un des fonds du carter dans lequel est placé le mécanisme. Chaque piston est relié individuellement au plateau oblique, par exemple par l'intermédiaire d'une bielle articulée et le plateau oblique est bloqué en rotation. De la sorte, lorsqu'on entraine en rotation la pièce de commande, le plateau oblique est animé d'un mouvement oscillant autour du point où son axe de tourillonnement coupe l'axe longitudinal de rotation et qui constitue donc un centre d'oscillation. Etant donné que le plateau oblique est bloqué en rotation, ce mouvement d'oscillation détermine un mouvement longitudinal alternatif des pistons par l'intermédiaire de bielles articulées. Des efforts longitudinaux sont donc développés par les pistons entre la culasse fixée sur le fond arrière du carter et le plateau oblique qui s'appuie sur la pièce de commande, celle-ci prenant appui à son tour, par l'intermédiaire d'une butée axiale, sur le fond avant du carter. Ainsi, l'ensemble des efforts doit être supporté par le carter, plus spécialement par les deux fonds de celui-ci et la paroi latérale qui les relie entre eux. Lorsque la pompe est de forte puissance, le carter doit supporter des efforts importants et on est amené à des réalisations très lourdes et encombrantes.The subject of the invention is an oblique plate mechanism which can be used in particular for controlling a pump. Such mechanisms, which have been known for a long time, include, inside a casing, a control part rotatably mounted about a longitudinal axis and on which is formed a journal axis of an oblique plate inclined relative to the 'longitudinal axis and bearing on the control part by means of an axial stop. The pump comprises a plurality of pistons distributed around the longitudinal axis and sliding parallel to the latter in cylindrical bodies formed in a cylinder head fixed on one of the bases of the casing in which the mechanism is placed. Each piston is individually connected to the oblique plate, for example by means of an articulated rod and the oblique plate is locked in rotation. In this way, when the control part is rotated, the oblique plate is animated with an oscillating movement around the point where its axis of journalling intersects the longitudinal axis of rotation and which therefore constitutes a center of oscillation. Since the oblique plate is locked in rotation, this oscillation movement determines an alternating longitudinal movement of the pistons by means of articulated rods. Longitudinal forces are therefore developed by the pistons between the cylinder head fixed on the rear bottom of the casing and the oblique plate which is supported on the control part, the latter taking support in turn, by means of a stop. axial, on the front bottom of the casing. Thus, all of the forces must be supported by the casing, more particularly by the two bottoms thereof and the side wall which connects them together. When the pump is of high power, the casing must withstand significant efforts and we are led to very heavy and bulky achievements.

Pour alléger la pompe, on a proposé, dans le brevet 72-44532 déposé le 14 Décembre 1972 par la même société, de relier entre eux les deux fonds du carter par un tirant central dont les extrémités prennent appui sur les faces externes des deux fonds et qui est mis sous une tension de précontrainte susceptible d'équilibrer les efforts développés par les pistons. De préférence, l'effort de précontrainte est repris à vide par une colonne entretoise interposée entre les faces internes des deux fonds, centrée sur l'axe longitudinal de rotation et à l'intérieur de laquelle passe le tirant précontraint.To lighten the pump, it has been proposed in patent 72-44532 filed on December 14, 1972 by the same company, to connect the two casing bottoms together by a central tie rod whose ends bear on the external faces of the two bottoms and which is put under a prestressing tension capable of balancing the forces developed by the pistons. Preferably, the prestressing force is taken up empty by a spacer column interposed between the internal faces of the two bottoms, centered on the longitudinal axis of rotation and inside which the prestressed tie passes.

Les efforts développés par les pistons suivant leurs axes de coulissement et repris par le tirant central et par les parois latérales sont appliqués sur les deux fonds du carter. Ceux-ci sont donc soumis à des efforts alternés dirigés suivant les axes des pistons et qui dépendent de la position du plateau oblique.The forces developed by the pistons along their sliding axes and taken up by the central tie rod and by the side walls are applied to the two funds of the casing. These are therefore subjected to alternating forces directed along the axes of the pistons and which depend on the position of the oblique plate.

L'invention à pour objet des perfectionnements à cette disposition qui permettent au carter de résister aux efforts alternés même dans le cas de pompe de forte puissance tout en gardant une structure relativement légère.The subject of the invention is improvements to this arrangement which allow the casing to resist alternating forces even in the case of a high power pump while keeping a relatively light structure.

Conformément à l'invention, les deux fonds du carter sont reliés sur leur périphérie par une pluralité de tirants latéraux additionnels parallèles à l'axe central, prenant appui sur les deux fonds du carfer et soumis à une tension de précontrainte susceptible de compenser les efforts développés par les pistons, en coopération avec le tirant central, chaque piston correspondant soit à un tirant latéral unique, centré dans le plan radial passant par l'axe central et l'axe de coulissement du piston, soit à une paire de tirants latéraux placés symétriquement de part et d'autre du plan radial correspondant. Dans un mode de réalisation préférentiel, la pièce rotative de commande prend appui sur le fond avant du carter le long d'une circonférence centrée sur l'axe longitudinal et passant par les axes des pistons, par l'intermédiaire d'une nervure circulaire ménagée sur un plateau transversal fixe placé à l'extrémité avant de la colonne entretoise centrale.In accordance with the invention, the two casing bottoms are connected on their periphery by a plurality of additional lateral tie rods parallel to the central axis, bearing on the two casing bottoms and subjected to a prestressing tension capable of compensating for the forces developed by the pistons, in cooperation with the central tie rod, each piston corresponding either to a single lateral tie rod, centered in the radial plane passing through the central axis and the sliding axis of the piston, or to a pair of lateral tie rods placed symmetrically on either side of the corresponding radial plane. In a preferred embodiment, the rotary control part bears on the front bottom of the casing along a circumference centered on the longitudinal axis and passing through the axes of the pistons, by means of a circular rib formed on a fixed transverse plate placed at the front end of the central spacer column.

Mais l'invention sera mieux comprise par la description d'un mode de réalisation particulier, donné à titre d'exemple et représenté sur les dessins annexés.

  • La figure 1 est une vue de l'ensemble de la pompe et du mécanisme, en coupe longitudinale selon la ligne brisée AA de la figure 2.
  • La figure 2 est une vue en coupe transversale selon BB de la figure 1.
However, the invention will be better understood from the description of a particular embodiment, given by way of example and shown in the accompanying drawings.
  • FIG. 1 is a view of the assembly of the pump and of the mechanism, in longitudinal section along the broken line AA of FIG. 2.
  • FIG. 2 is a cross-sectional view along BB of FIG. 1.

Sur la figure 1, on a représenté l'ensemble de la pompe 1 et du mécanisme de commande placé à l'intérieur d'un carter 2 et constitué d'une pièce de commande 3 monté rotative autour d'un axe 30 sur une colonne creuse 4 et sur laquelle un plateau oblique 5 est monté tourillonnant autour d'un axe 50 incliné d'un angle (i) par rapport à l'axe longitudinal 30 et coupant ce dernier en un centre d'oscillation 0.In Figure 1, there is shown the assembly of the pump 1 and the control mechanism placed inside a casing 2 and consisting of a control part 3 rotatably mounted around an axis 30 on a column hollow 4 and on which an oblique plate 5 is mounted journalling about an axis 50 inclined at an angle (i) relative to the longitudinal axis 30 and cutting the latter into a center of oscillation 0.

La pompe 1 est constituée par une pluralité de pistons 6 montés coulissants chacun le long d'un axe 60 parallèle à l'axe longitudinal 30, à l'intérieur de corps cylindriques 61 solidaires de la culasse 11 de la pompe. Dans le mode de réalisation représenté, chaque piston 6 est solidaire d'un coulisseau 62 guidé suivant l'axe 60 à l'intérieur d'un corps cylindrique 63. Chaque coulisseau 62 est relié au plateau oblique 5 par une bielle 64 muni à ses deux extrémités de deux rotules 65 et 66 de liaison, respectivement, avec le plateau oblique 5 et avec le coulisseau 62.The pump 1 is constituted by a plurality of pistons 6 slidingly mounted each along an axis 60 parallel to the longitudinal axis 30, at inside cylindrical bodies 61 integral with the cylinder head 11 of the pump. In the embodiment shown, each piston 6 is integral with a slide 62 guided along the axis 60 inside a cylindrical body 63. Each slide 62 is connected to the oblique plate 5 by a connecting rod 64 provided with its two ends of two ball joints 65 and 66 for connection, respectively, with the oblique plate 5 and with the slide 62.

Le plateau oblique. 5 est monté tourillonnant autour de l'axe 50 sur un palier 51 monté sur une portée inclinée 31 ménagée sur la pièce de commande 3. Celle-ci est munie également d'une surface d'appui inclinée 32 placée dans un plan perpendiculaire à l'axe 50 et sur laquelle prend appui le plateau oblique 5 par intermédiaire d'une butée axiale 52.The oblique plate. 5 is mounted pivoting around the axis 50 on a bearing 51 mounted on an inclined bearing 31 provided on the control part 3. The latter is also provided with an inclined bearing surface 32 placed in a plane perpendicular to the axis 50 and on which the oblique plate 5 is supported by means of an axial stop 52.

Par ailleurs, la pièce de commande 3 s'appuie également par l'intermédiaire d'une butée axiale 33 sur un plateau transversal 41 ménagée à l'extrémité de la colonne 4 opposée à la pompe 1 et perpendiculaire à l'axe 30, la colonne 4 portant également un palier 34 de guidage axial de la pièce de commande 3.Furthermore, the control part 3 is also supported by means of an axial stop 33 on a transverse plate 41 formed at the end of the column 4 opposite the pump 1 and perpendicular to the axis 30, the column 4 also carrying a bearing 34 for axially guiding the control part 3.

Les centres des rotules 65 de liaison de la bielle 64 avec le plateau 5 sont placés aux points de rencontre des axes 60 de coulissement des pistons 6 avec un plan perpendiculaire à l'axe incliné 50 et passant par le centre d'oscillation 0, pour les deux positions angulaires extrêmes du plateau oblique pour lesquelles l'axe 50 se trouve dans le plan radial passant par l'axe longitudinal 30 et l'axe 60 du piston correspondant. Bien entendu, les centres'des rotules 66 de liaison avec les coulisseaux 62 sont également placés sur les axes 60 de coulissement.The centers of the ball joints 65 connecting the connecting rod 64 with the plate 5 are placed at the meeting points of the axes 60 of sliding of the pistons 6 with a plane perpendicular to the inclined axis 50 and passing through the center of oscillation 0, for the two extreme angular positions of the oblique plate for which the axis 50 is in the radial plane passing through the longitudinal axis 30 and the axis 60 of the corresponding piston. Of course, the centers of the ball joints 66 for connection with the slides 62 are also placed on the sliding axes 60.

On voit donc que, lorsque la pièce de commande 3 est entraînée en rotation autour de son axe 30 par un mécanisme 42, le plateau oblique 5, qui est lui-même bloqué en rotation par des moyens noms représentés, oscille autour du centre 0 et commande, par l'intermédiaire des bielles 64 et des coulisseaux 62, un mouvement alternatif des pistons 6 le long de leurs axes 60.It can therefore be seen that, when the control part 3 is rotated about its axis 30 by a mechanism 42, the oblique plate 5, which is itself locked in rotation by the name means shown, oscillates around the center 0 and controls, by means of the connecting rods 64 and the sliders 62, an alternating movement of the pistons 6 along their axes 60.

La poussée des pistons 6 est donc encaissée par le plateau oblique 5 et transmise à la pièce de commande 3 puis au plateau transversal fixe 41 respectivement par les butées axiales 52 et 33.The thrust of the pistons 6 is therefore collected by the oblique plate 5 and transmitted to the control part 3 then to the fixed transverse plate 41 respectively by the axial stops 52 and 33.

Cette poussée doit donc être reprise par le carter 2 qui comprend un fond arrière 21 sur lequel est fixée la pompe 2 et un fond avant 22 sur lequel prend appui le plateau transversal fixe 41.This thrust must therefore be taken up by the casing 2 which comprises a rear bottom 21 on which the pump 2 is fixed and a front bottom 22 on which the fixed transverse plate 41 is supported.

Selon la disposition qui fait l'objet du brevet déjà cité N° 72-44532, les efforts de poussée sont repris par un tirant 8 qui passe à l'intérieur de la colonne centrale tubulaire 4 et est muni à ses deux extrémités de têtes d'appui 81 et 82, respectivement sur le fond arrière 21 et sur le fond avant 22. Ce dernier à la forme d'un caisson dans le centre duquel est placée une colonne axiale 23 qui se trouve dans le prolongement de la colonne entretoise 4 et sur laquelle celle-ci prend appui du côté de la pompe.According to the arrangement which is the subject of the already cited patent N ° 72-44532, the thrust forces are taken up by a tie rod 8 which passes to inside the central tubular column 4 and is provided at its two ends with support heads 81 and 82, respectively on the rear bottom 21 and on the front bottom 22. The latter has the shape of a box in the center which is placed an axial column 23 which is in the extension of the spacer column 4 and on which the latter bears on the side of the pump.

Selon la caractéristique essentielle de l'invention, le carter 2 est muni en outre d'une pluralité de tirants latéraux 80, placés sur sa périphérie, pour reprendre les efforts développés par les pistons chacun en coopération avec le tirant central et qui sont répartis à cet effet symétriquement par rapport aux plans radiaux passant par l'axe longitudinal 30 et par les axes 60 des pistons 6. Chaque piston 6 peut donc correspondre soit à un seul tirant latéral 83 placé dans le pian radial P correspondant, soit à deux tirants latéraux 85 placés symétriquement de part et d'autre du plan radial correspondant.According to the essential characteristic of the invention, the casing 2 is further provided with a plurality of lateral tie rods 80, placed on its periphery, to take up the forces developed by the pistons each in cooperation with the central tie rod and which are distributed at this effect symmetrically with respect to the radial planes passing through the longitudinal axis 30 and through the axes 60 of the pistons 6. Each piston 6 can therefore correspond either to a single lateral tie rod 83 placed in the corresponding radial plane P, or to two lateral tie rods 85 placed symmetrically on either side of the corresponding radial plane.

Dans l'exemple représenté, et qui correspond à une pompe à trois pistons, les deux solutions ont été combinées. En effet, comme on le voit sur la figure 2, le carter 2 comprend deux tirants latéraux supérieurs 83 centrés dans les plans radiaux correspondant à deux pistons 6a et 6b alors que les efforts développés par le troisième piston 6c sont repris, en coopération avec le tirant central 8, par deux autres tirants inférieurs 85 placés symétriquement de part et d'autre du plan radial correspondant P1.In the example shown, which corresponds to a three-piston pump, the two solutions have been combined. In fact, as can be seen in FIG. 2, the casing 2 comprises two upper lateral tie rods 83 centered in the radial planes corresponding to two pistons 6a and 6b while the forces developed by the third piston 6c are taken up, in cooperation with the central tie rod 8, by two other lower tie rods 85 placed symmetrically on either side of the corresponding radial plane P 1 .

Les tirants latéraux sont soumis, comme le tirant central 8, à une tension de précontrainte susceptible de s'opposer aux poussées des pistons et de ce fait, chaque tirant 80 est muni à ses extrémités de têtes 87 d'appui sur les faces externes des deux fonds 21 22 du carter et passent dans une colonne entretoise 24 constitutive du carter et interposée entre les deux fonds de façon à empêcher le rapprochement de ceux-ci sous l'action de la tension de précontrainte lorsque la poussée du piston correspondant ne s'exerce pas en sens inverse.The lateral tie rods are subjected, like the central tie rod 8, to a prestressing tension capable of opposing the thrusts of the pistons and therefore, each tie rod 80 is provided at its ends with heads 87 bearing on the external faces of the two bottoms 21 22 of the casing and pass through a spacer column 24 constituting the casing and interposed between the two bottoms so as to prevent them from coming together under the action of the prestressing tension when the thrust of the corresponding piston does not not exercise in reverse.

Bien entendu, les tensions de précontraintes et par conséquent les sections des tirants seront déterminés en fonction des efforts développés par les pistons et des distances des axes 60 de ces derniers par rapport aux tirants latéraux 80 et au tirant central 8.Of course, the prestressing tensions and consequently the cross sections of the tie rods will be determined as a function of the forces developed by the pistons and of the distances from the axes 60 of the latter relative to the lateral tie rods 80 and to the central tie rod 8.

On voit par ailleurs que la disposition à deux tirants 85 86 adoptés pour le piston 6c permet de placer entre eux le mécanisme d'entraînement 42 qui se compose par exemple d'un pignon calé sur un arbre moteur 43 et engrenant avec une roue dentée 35 solidaire de la pièce de commande 3.It can also be seen that the arrangement with two tie rods 85 86 adopted for the piston 6c makes it possible to place between them the drive mechanism 42 which consists for example of a pinion wedged on a motor shaft 43 and meshing with a toothed wheel 35 secured to the control panel 3.

L'ensemble du carter 2 est en construction mécano-soudée et, grâce aux solutions adoptées, peut être relativement léger. Chaque fond a la forme d'un caisson constitué de plaques transversales reliées par des entretoises. Celles-ci sont constituées par la colonne centrale 23 et par les colonnes latérales 24 dans le cas du fond arrière 21 qui constitue le sommier fixe de l'installation sur lequel sont fixés d'un côté la pompe 1 et de l'autre côté le mécanisme de commande 3, 4, 5.The entire casing 2 is in mechanically welded construction and, thanks to the solutions adopted, can be relatively light. Each bottom has the shape of a box made up of transverse plates connected by spacers. These are constituted by the central column 23 and by the lateral columns 24 in the case of the rear bottom 21 which constitutes the fixed base of the installation on which the pump 1 is fixed on one side and the control mechanism 3, 4, 5.

Le fond avant 22 est formé d'un caisson constitué de deux plaques latérales reliées entre elles par des parois entretoises 25 placées autour. d'orifices 26 de passage des tirants 80, dans le prolongement des parois des colonnes 24 du tirant correspondant.The front bottom 22 is formed of a box consisting of two side plates connected to each other by spacer walls 25 placed around. orifices 26 for passage of the tie rods 80, in the extension of the walls of the columns 24 of the corresponding tie rod.

Par ailleurs, la culasse 1 est avantageusement munie d'une plaque de fixation 12 qui est appliquée sur la face externe 27 du fond arrière 21 et sur laquelle s'appuient les têtes du tirant central 8 et des tirants latéraux 80, qui passent dans des orifices ménagés dans la plaque 12.Furthermore, the cylinder head 1 is advantageously provided with a fixing plate 12 which is applied to the external face 27 of the rear bottom 21 and on which the heads of the central tie rod 8 and of the lateral tie rods 80 rest, which pass through holes in the plate 12.

Cette dispositions permet donc de démonter facilement, par desserrage des tirants, l'ensemble de la pompe 1.This arrangement therefore makes it possible to easily dismantle, by loosening the tie rods, the assembly of the pump 1.

L'ensemble carter corps hydraulique forme donc un bloc rigide précontraint, facilement démontable, et résistant bien aux fortes poussées internes des pistons.The hydraulic body casing assembly therefore forms a pre-stressed rigid block, easily removable, and well resistant to strong internal thrusts of the pistons.

D'autre part, selon une autre disposition avantageuse, l'appui axial du mécanisme de commande sur le fond avant 22 se fait le long d'une circonférente centrée sur l'axe longitudinal 30 et de rayon R égal à la distance entre l'axe 30 et les axes 60 des pistons. A cet effet, le plateau transversal 41 est muni , du côté du fond 22, d'une nervure circulaire d'appui 44 ayant un rayon moyen égal à R. Un disque 25 formant cale d'épaisseur est interposé entre la nervure d'appui 44 et la face interne du fond avant 22 et la colonne centrale 4 s'appuie sur l'extrémité de la colonne axiale 23 du fond avant 21 par l'intermédiaire d'une butée réglable qui peut être constituée par exemple par un écrou 45 vissé sur un filetage ménagé à l'extrémité de la colonne 4 tournée vers la pompe 1. On évite ainsi tout jeu axial notable de l'ensemble mécanique interne, le réglage de l'écrou 45 permettant de repousser axialement la colonne centrale 4 pour assurer le contact avec le fond 22 le long de la nervure 44. Un léger jeu (e) peut d'ailleurs être ménagé entre la partie centrale du fond avant 22 et une nervure circulaire de plus petit diamètre ménagée à l'extrémité de la colonne traie 4 et entourant l'orifice de passage du tirant central 8. On limite ainsi la déformation du fond 22 sous l'action de la tension de précontrainte appliquée sur le tirant central 8.On the other hand, according to another advantageous arrangement, the axial support of the control mechanism on the front bottom 22 takes place along a circumference centered on the longitudinal axis 30 and of radius R equal to the distance between the axis 30 and axes 60 of the pistons. To this end, the transverse plate 41 is provided, on the bottom side 22, with a circular support rib 44 having an average radius equal to R. A disc 25 forming a shim is thick interposed between the support rib 44 and the internal face of the front bottom 22 and the central column 4 rests on the end of the axial column 23 of the front bottom 21 by means of an adjustable stop which can be constituted for example by a nut 45 screwed on a thread formed at the end of the column 4 facing the pump 1. This avoids any significant axial play of the internal mechanical assembly, the adjustment of the nut 45 making it possible to axially push the central column 4 to ensure the contact with the bottom 22 along the rib 44. A slight clearance (e) can also be made between the central part of the front bottom 22 and a circular rib of smaller diameter formed at the end of the treated column 4 and surrounding the opening of the central tie 8. This limits the defor bottom 22 under the action of the pre-tension applied to the central tie 8.

Bien entendu, l'invention ne se limite pas aux détails du mode de réalisation qui vient d'être décrit à titre de simple exemple et qui pourrait être modifié en utilisant des moyens équivalents. C'est le cas notamment de la réalisation matérielle du mécanisme, de la pompe et du carter. En particulier, celui-ci pourrait être constitué d'une simple plaque munie sur sa face externe de nervures de renforcement passant par l'axe longitudinal et par les axes des tirants latéraux et des pistons correspondants.Of course, the invention is not limited to the details of the embodiment which has just been described by way of simple example and which could be modified by using equivalent means. This is the case in particular of the physical production of the mechanism, the pump and the casing. In particular, it could consist of a simple plate provided on its external face with reinforcing ribs passing through the longitudinal axis and through the axes of the lateral tie rods and of the corresponding pistons.

Claims (9)

1. Mécanisme à plateau oblique comprenant, à l'intérieur d'un carter (2), une pièce de commande (3) montée rotative autour d'un axe longitudinal (30), un plateau oblique (5) prenant appui par l'intermédiaire d'une butée axiale (52) sur la pièce de commande (3) et monté tourillonnant sur celle-ci autour d'un axe (50) incliné par rapport à l'axe longitudinal (30) et coupant celui-ci en un centre d'oscillation (0), une pluralité de pistons (6) répartis autour de l'axe longitudinal (30), montés coulissants parallèlement audit axe dans des corps cylindriques (61) ménagés sur une culasse (1) et prenant appui individuellement sur le plateau oblique (5), ce dernier étant bloqué en rotation, le carter (2) étant limité par deux fonds écartés reliés entre eux, un fond arrière (21) sur lequel est fixée la culasse (1) et un fond avant (22) sur lequel prend appui la pièce de commande (3), les efforts longitudinaux développés par les pistons (6) étant repris, au moins partiellement, par un tirant central précontraint (8) dirigé suivant l'axe longitudinal (30), traversant les deux fonds (21,22) du carter et prenant appui à ses deux extrémités sur les faces externes de ces derniers,
caractérisé par le fait que les deux fonds (21, 22) du carter sont reliés sur leur périphérie par une pluralité de tirants latéraux additionnels (80) parallèles au tirant central (8), prenant appui sur les deux fonds (21, 22) du carter (2) et soumis à une tension de précontrainte pour la reprise des efforts développés par les pistons (6) en coopération avec le tirant central (8).1. Mechanism with oblique plate comprising, inside a casing (2), a control part (3) rotatably mounted about a longitudinal axis (30), an oblique plate (5) supported by the intermediate an axial stop (52) on the control part (3) and mounted journalling thereon around an axis (50) inclined with respect to the longitudinal axis (30) and cutting the latter into a oscillation center (0), a plurality of pistons (6) distributed around the longitudinal axis (30), slidably mounted parallel to said axis in cylindrical bodies (61) formed on a cylinder head (1) and bearing individually on the oblique plate (5), the latter being blocked in rotation, the casing (2) being limited by two separated bottoms connected together, a rear bottom (21) on which the cylinder head (1) is fixed and a front bottom (22 ) on which the control piece (3) is supported, the longitudinal forces developed by the pistons (6) being taken up, at least partially, by a tie rod cen prestressed tral (8) directed along the longitudinal axis (30), crossing the two bottoms (21,22) of the casing and bearing at its two ends on the external faces of the latter,
characterized by the fact that the two bottoms (21, 22) of the casing are connected on their periphery by a plurality of additional lateral tie rods (80) parallel to the central tie rod (8), bearing on the two bottoms (21, 22) of the casing (2) and subjected to a prestressing tension for the recovery of the forces developed by the pistons (6) in cooperation with the central tie rod (8). 2. Mécanisme à plateau oblique selon la revendication 1, caractérisé par le fait qu'à chaque piston (6) correspond au moins un tirant latéral (83) placé dans le plan radial (P) passant par l'axe (60) du piston (6) correspondant, pour la reprise des efforts développés par ce dernier, en coopération avec le tirant central (8).2. Oblique plate mechanism according to claim 1, characterized in that each piston (6) corresponds to at least one lateral tie rod (83) placed in the radial plane (P) passing through the axis (60) of the piston (6) corresponding, for the resumption of the efforts developed by the latter, in cooperation with the central tie (8). 3. Mécanisme à plateau oblique selon l'une des revendications 1 et 2,
caractérisé par le fait que la poussée d'au moins l'un des pistons (6) est reprise par deux tirants latéraux (85, 86) écartés symétriquement de part et d'autre du plan radial (Pi) passant par l'axe du piston (6) correspondant.3. oblique plate mechanism according to one of claims 1 and 2,
characterized in that the thrust of at least one of the pistons (6) is taken up by two lateral tie rods (85, 86) spaced symmetrically on either side of the radial plane (P i ) passing through the axis of the corresponding piston (6). 4. Mécanisme à plateau oblique selon l'une des revendications précédentes,
caractérisé par le fait que chaque tirant latéral (80) passe à l'intérieur d'une colonne entretoise creuse (24) de reprise des efforts de précontrainte, s'appuyant vers l'extérieur, par ses deux extrémités sur les faces internes en regard des deux fonds (21, 22) du carter (2).4. oblique plate mechanism according to one of the preceding claims,
characterized in that each lateral tie rod (80) passes inside a hollow spacer column (24) for resuming the prestressing forces, pressing outwards, by its two ends on the internal faces opposite the two bottoms (21, 22) of the casing (2). 5. Mécanisme à plateau oblique selon l'une des revendications précédentes,
caractérisé par le fait que la pièce rotative de commande (3) prend appui sur le fond avant (22) du carter (2) le long d'une circonférence (44) centrée sur l'axe longitudinal (30) et passant par les axes (60) des pistons (6).5. oblique plate mechanism according to one of the preceding claims,
characterized in that the rotary control part (3) bears on the front bottom (22) of the casing (2) along a circumference (44) centered on the longitudinal axis (30) and passing through the axes (60) pistons (6). 6. Mécanisme à plateau oblique selon la revendication 5, dans lequel la pièce de commande (3) s'appuie, par l'intermédiaire d'une butée axiale (33), sur un plateau transversal fixe (41) ménagé à l'extrémité d'une colonne entretoise centrale (4), du côté opposé aux pistons (6), caractérisé par le fait que le plateau transversal (41) est.muni, sur sa face tournée vers l'extérieur, d'une nervure circulaire (44) d'appui sur le fond avant (22) du carter (2) centrée sur l'axe longitudinal (30) et dont le rayon moyen (R) est égal à la distance entre l'axe longitudinal (30) et les axes (60) des pistons (6).6. oblique plate mechanism according to claim 5, wherein the control part (3) is supported, by means of an axial stop (33), on a fixed transverse plate (41) formed at the end a central spacer column (4), on the side opposite to the pistons (6), characterized in that the transverse plate (41) is provided, on its face turned outwards, with a circular rib (44 ) bearing on the front bottom (22) of the casing (2) centered on the longitudinal axis (30) and whose mean radius (R) is equal to the distance between the longitudinal axis (30) and the axes ( 60) pistons (6). 7. Mécanisme à plateau oblique selon la revendication 6, caractérisé par le fait qu'un disque (25) formant cale d'épaisseur est interposé entre la face interne du fond avant (22) du carter (2) et la nervure circulaire (44) d'appui du plateau transversal (41) et que la colonne entretoise centrale (4) prend appui à son extrémité opposée sur le fond arrière (21) par l'intermédiaire d'un écrou de réglage (45) engrenant sur un filetage ménagé à l'extrémité de la colonne centrale (4).7. Oblique plate mechanism according to claim 6, characterized in that a disc (25) forming a shim is interposed between the internal face of the front bottom (22) of the casing (2) and the circular rib (44 ) supporting the transverse plate (41) and that the central spacer column (4) is supported at its opposite end on the rear bottom (21) by means of an adjusting nut (45) meshing on a formed thread at the end of the central column (4). 8. Mécanisme à plateau oblique selon la revendication 4, caractérisé par le fait que chaque fond (21, 22) du carter (2) est formé par un caisson rigide en construction mécano-soudée, constitué de plaques parallèles reliées par des parois entretoises (25) placées autour d'orifices (26) de passage des tirants (80) dans le prolongement des parois des colonnes entretoises (24) dans lesquelles passent les tirants latéraux (80).8. oblique plate mechanism according to claim 4, characterized in that each bottom (21, 22) of the casing (2) is formed by a rigid box in mechanically welded construction, consisting of parallel plates connected by spacer walls ( 25) placed around orifices (26) for passage of the tie rods (80) in the extension of the walls of the spacer columns (24) through which the lateral tie rods (80) pass. 9. Mécanisme à plateau oblique selon l'une des revendications précédentes, caractérisé par le fait que le fond avant (22) du carter (2) est muni de nervures de renforcement passant par l'axe longitudinal (30) et les axes (60) des tirants latéraux (80) et des pistons (6) correspondants.9. oblique plate mechanism according to one of the preceding claims, characterized in that the front bottom (22) of the housing (2) is provided with reinforcing ribs passing through the longitudinal axis (30) and the axes (60 ) lateral tie rods (80) and corresponding pistons (6).
EP84401377A 1983-07-01 1984-06-28 Swash plate mechanism, especially for the drive of a pump Expired EP0130912B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401377T ATE29768T1 (en) 1983-07-01 1984-06-28 SLOPE DRIVE, IN PARTICULAR FOR DRIVING A PUMP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8310962A FR2548284B1 (en) 1983-07-01 1983-07-01 OBLIQUE PLATE MECHANISM FOR THE CONTROL OF A PUMP
FR8310962 1983-07-01

Publications (2)

Publication Number Publication Date
EP0130912A1 true EP0130912A1 (en) 1985-01-09
EP0130912B1 EP0130912B1 (en) 1987-09-16

Family

ID=9290399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401377A Expired EP0130912B1 (en) 1983-07-01 1984-06-28 Swash plate mechanism, especially for the drive of a pump

Country Status (9)

Country Link
US (1) US4584927A (en)
EP (1) EP0130912B1 (en)
JP (1) JPS6035186A (en)
AT (1) ATE29768T1 (en)
BR (1) BR8402981A (en)
CA (1) CA1235022A (en)
DE (1) DE3466270D1 (en)
FR (1) FR2548284B1 (en)
SU (1) SU1329628A3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588617A1 (en) * 1985-10-14 1987-04-17 Drevet Michel ROTARY PISTON AND BARREL MACHINE WITH FIXED CENTERING.
EP0302786A1 (en) * 1987-08-06 1989-02-08 Michel Drevet Rotating machine with pistons and barrel with a fixed centering toggle type joint
FR2619166A2 (en) * 1985-10-14 1989-02-10 Drevet Michel Rotary machine with pistons and with a barrel with a fixed centring swivel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737729Y2 (en) * 1988-10-12 1995-08-30 岩田塗装機工業株式会社 Pressurized spray gun for architectural spray materials
DE4039926C2 (en) * 1990-09-19 1994-08-11 Elektra Beckum Ag Axial piston pump, especially for water high-pressure cleaners
US6354186B1 (en) 1998-12-08 2002-03-12 Caterpillar Inc. Hydrostatic thrust bearing for a wobble plate pump
CN102720648B (en) * 2012-05-29 2014-12-10 华中科技大学 Full depth buoyancy regulating seawater pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH130964A (en) * 1928-02-15 1929-01-15 Tubize Artificial Silk Company Multi-cylinder pump.
GB474869A (en) * 1936-02-18 1937-11-09 Teves Kg Alfred Improvements in oil pumps
FR1303796A (en) * 1962-10-01 1962-09-14 Adjustable variable flow piston rotary pump
FR2077178A5 (en) * 1970-01-30 1971-10-15 Applied Power Ind Inc
FR2211090A5 (en) * 1972-12-14 1974-07-12 Creusot Loire
FR2506857A1 (en) * 1981-05-27 1982-12-03 Creusot Loire BARREL MECHANISM

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1781068A (en) * 1921-04-29 1930-11-11 Michell Crankless Engines Corp Fluid motor and pump
DE527635C (en) * 1929-03-11 1931-06-20 John Frederick Nevinson Craig Cooling device for piston engines, especially air compressors
US2095316A (en) * 1934-12-14 1937-10-12 Watson Stillman Co Pump
US2141935A (en) * 1936-11-17 1938-12-27 Waterbury Tool Co Power transmission
US2474396A (en) * 1945-03-01 1949-06-28 Gen Motors Corp Injection pump
US2498679A (en) * 1948-07-12 1950-02-28 Edwin S Hall Starplate mechanism
US3006324A (en) * 1960-10-06 1961-10-31 American Brake Shoe Co Reciprocatory piston engines
GB1414997A (en) * 1971-11-29 1975-11-26 Boyle B A Rotating cylinder block pump
JPS5226601A (en) * 1975-08-27 1977-02-28 Hitachi Ltd Fixing device for pump cover
JPS5235881A (en) * 1975-09-16 1977-03-18 Matsushita Electric Works Ltd Contact switch
US4101250A (en) * 1975-12-29 1978-07-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Swash plate type compressor
FR2461127A1 (en) * 1979-03-30 1981-01-30 Creusot Loire ALTERNATIVE PUMP
DE3014552C2 (en) * 1980-04-16 1986-06-26 Paul 4740 Oelde Hammelmann Hydraulic drive device for an axial piston pump
JPS59222B2 (en) * 1980-08-25 1984-01-05 ジエクス株式会社 nipple plug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH130964A (en) * 1928-02-15 1929-01-15 Tubize Artificial Silk Company Multi-cylinder pump.
GB474869A (en) * 1936-02-18 1937-11-09 Teves Kg Alfred Improvements in oil pumps
FR1303796A (en) * 1962-10-01 1962-09-14 Adjustable variable flow piston rotary pump
FR2077178A5 (en) * 1970-01-30 1971-10-15 Applied Power Ind Inc
FR2211090A5 (en) * 1972-12-14 1974-07-12 Creusot Loire
FR2506857A1 (en) * 1981-05-27 1982-12-03 Creusot Loire BARREL MECHANISM

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588617A1 (en) * 1985-10-14 1987-04-17 Drevet Michel ROTARY PISTON AND BARREL MACHINE WITH FIXED CENTERING.
EP0225834A1 (en) * 1985-10-14 1987-06-16 Michel Drevet Piston and barrel rotary machine with a fixed central swivel member
FR2619166A2 (en) * 1985-10-14 1989-02-10 Drevet Michel Rotary machine with pistons and with a barrel with a fixed centring swivel
EP0302786A1 (en) * 1987-08-06 1989-02-08 Michel Drevet Rotating machine with pistons and barrel with a fixed centering toggle type joint

Also Published As

Publication number Publication date
ATE29768T1 (en) 1987-10-15
FR2548284B1 (en) 1987-10-23
JPS6035186A (en) 1985-02-22
SU1329628A3 (en) 1987-08-07
DE3466270D1 (en) 1987-10-22
US4584927A (en) 1986-04-29
EP0130912B1 (en) 1987-09-16
BR8402981A (en) 1985-05-28
FR2548284A1 (en) 1985-01-04
CA1235022A (en) 1988-04-12

Similar Documents

Publication Publication Date Title
EP0148691B1 (en) Membrane pump with controlled rate of flow
EP0302098B1 (en) Motorcycle
EP1169549B1 (en) Mechanical transmission device for engine with variable volume displacement
FR2610973A1 (en) VIBRATION EQUALIZATION RULE FOR CONCRETE
FR2612592A1 (en) COMPLEX MOTION GUIDING UNIT AND COMPLEX MOTION GUIDING APPARATUS INCORPORATING THE SAME
EP0130912B1 (en) Swash plate mechanism, especially for the drive of a pump
EP0145919B1 (en) Device for continuously reprofiling the head of at least one rail
FR2529157A1 (en) TRACKED VEHICLE REMOTE CONTROL
CA1307163C (en) Rotary machine with pistons and drum and fixed center spherical joint
FR2739093A1 (en) LIFTING COLUMN
FR2523236A1 (en) HOMOCINETIC SEAL WITH TRIPOD AXIAL
EP0455519B1 (en) Hydrostatically driven axle for a fork lift truck
CA1203711A (en) Barrel mechanis for piston pump
FR2865180A1 (en) WORKING MACHINE COMPRISING A STEERING AXLE EQUIPPED WITH TWO SWIVEL BRIDGES
EP0414836B1 (en) Vehicle with variable geometry steering wheel
FR2843364A1 (en) Cycle pedal gear comprises two crank supports eccentrically positioned on driving cog rotational axis, rotation of cranks carrying pedals transmitted to driving cog by lugs on cranks displacing in runners connected to driving cog axis
CA2057562A1 (en) Crane for handling purposes mainly
EP1990502A2 (en) Device for driving the rotation of a driven tubular element, capable of receiving and carrying a fluid under pressure
FR2688175A3 (en) Hydraulically driven automotive vehicle
EP0647758A1 (en) Device for opening and closing a swinging wing
FR2670099A1 (en) SYSTEM FOR THE VERTICAL MOVEMENT IN TRANSLATION OF A SUBSTANTIALLY HORIZONTAL PLATFORM, PARTICULARLY OF A BED MATTRESS.
FR2703974A1 (en) Device for driving a wheel which is mounted so that it can rotate on a support, such as a bicycle wheel
EP0657582A1 (en) Rail grinder
FR2655006A1 (en) TREE CONNECTION MECHANISM AND POWER STEERING DEVICE.
FR2582612A1 (en) Improved pedal box especially for bicycles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850618

17Q First examination report despatched

Effective date: 19860421

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FRAMATOME

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19870916

REF Corresponds to:

Ref document number: 29768

Country of ref document: AT

Date of ref document: 19871015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3466270

Country of ref document: DE

Date of ref document: 19871022

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19880630

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880630

Ref country code: LI

Effective date: 19880630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19890517

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19890526

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19890602

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19890616

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890630

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890731

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19900630

BERE Be: lapsed

Owner name: FRAMATOME

Effective date: 19900630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84401377.1

Effective date: 19910206