EP0069605A1 - Swash-plate mechanism - Google Patents

Swash-plate mechanism Download PDF

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Publication number
EP0069605A1
EP0069605A1 EP82400975A EP82400975A EP0069605A1 EP 0069605 A1 EP0069605 A1 EP 0069605A1 EP 82400975 A EP82400975 A EP 82400975A EP 82400975 A EP82400975 A EP 82400975A EP 0069605 A1 EP0069605 A1 EP 0069605A1
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EP
European Patent Office
Prior art keywords
barrel
control part
axis
bearing
rotation
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
EP82400975A
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German (de)
French (fr)
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EP0069605B1 (en
Inventor
Gérard Chanlon
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.)
Creusot Loire SA
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Creusot Loire SA
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Publication date
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Priority to AT82400975T priority Critical patent/ATE9175T1/en
Publication of EP0069605A1 publication Critical patent/EP0069605A1/en
Application granted granted Critical
Publication of EP0069605B1 publication Critical patent/EP0069605B1/en
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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • F04B1/148—Bearings therefor

Definitions

  • the subject of the invention is a barrel mechanism, in particular for controlling an axial piston pump.
  • Such a mechanism which has been known for a long time, has been described for example in French patent No. 72/44532 (published under No. 2211090) of the same company. It includes, inside a casing, a control part journalled on two fixed bearings defining an axis of rotation.
  • the control part is provided with a plate inclined with respect to the axis of rotation on which a barrel mounted swiveling on the control part around an axis inclined with respect to the axis of rotation and cutting that -this in a center of oscillation of the barrel
  • the axis of rotation of the barrel is defined by a bearing integral with the control part, in the center of the inclined plate.
  • the control part thus forms a rotor driven by a motor around its axis of rotation and which gives the barrel a nutation movement around the center of oscillation, the barrel being locked in rotation by a connecting rod.
  • the pistons of the pump distributed regularly around the axis of rotation, rest on the barrel either directly or in the large pumps, by means of rods fitted with ball heads.
  • the forces exerted by the pistons on the barrel are transmitted to the control part by an axial stop interposed between the barrel and the oblique plate.
  • the control part is itself supported on a fixed plate by means of a second axial stop interposed between the fixed plate and a straight plate integral with the control part and perpendicular to the axis of rotation.
  • the fixed plate thus takes up, via the two axial stops, the forces parallel to the axis of rotation applied by the pistons on the barrel whose nutation movement, controlled by the rotation of the control part, determines the movement back and forth of the pump pistons.
  • the casing inside which the assembly is mounted supports the two journaling bearings of the control part and the fixed plate.
  • the invention relates to improvements making it possible to simplify the mounting of a mechanism of this type.
  • the prestressing of the central tie rod determines, in the pump which has just been described, a tightening of the axial abutment for supporting the control part which better withstands the alternating thrust and traction forces resulting from operation. of the pump.
  • the invention overcomes this drawback by proposing a tightening of the stop independent of the prestressing force of the tie rod.
  • the fixed plate is formed at one end of a central column forming a spindle defining the axis of swiveling of the control part and at the other end of which bears an elastic clamping means of the control part against the fixed plate, the casing being provided with means for detachably fixing said rocket.
  • the rocket forms, with the control part and the barrel, a compact assembly capable of being assembled and disassembled as a unit inside the casing.
  • the clamping means of the control piece comprises a sleeve mounted to slide at the end of the spindle provided with a circular abutment for crushing an elastic washer against a support ring secured to the control part and a sleeve tightening nut engaging a thread formed on the end of the spindle.
  • FIG. 1 represents, in axial section, an improved barrel mechanism according to the invention.
  • Figure 2 shows, in axial section, another embodiment.
  • the entire mechanism is mounted inside a casing 1 which consists of two bottoms 11 and 12 connected by a side wall 13.
  • the two bottoms 11 and 12 must be very rigid but, as indicated , if a pre-stressed central tie rod according to BF 2 211 090 is used, the side wall 13 has no resistance role and can therefore be very light.
  • the pump 2 On one of the bottoms 12 is mounted the pump 2, one of which is shown pistons 21.
  • the two bottoms 11 and 12 of the casing are on the other hand connected in their center by a central column 3 forming a rocket and on which a hollow part 4 is pivotally mounted forming the control part of the mechanism.
  • the control parts 4 rotate on two bearings supported by the rocket 3.
  • One of these bearings 41 is mounted at the end of the rocket 3 facing the pump 2.
  • the other bearing 32 is mounted at the periphery of a plate 33 formed on the end of the rocket facing the other bottom 11 of the casing.
  • the pistons 21 of the pump are connected to the barrel 5 by connecting rods 22 provided with ball joints 23.
  • the barrel is mounted journalled relative to the part 24 on a bearing 51 defining the axis of rotation 50.
  • the latter is inclined relative to the axis of rotation 10 of the control part and the two axes intersect in point 0 which constitutes the center of oscillation of the barrel. Indeed, it is connected to the casing 2, at a location not located in the plane of the figure, by a connecting rod which prevents the barrel from rotating around the axis 10 but nevertheless allows it to oscillate around the center 0 by following the movements of its axis of rotation 50 which describes a top cone 0 when the pinion 43 determines the rotation of the control part 4.
  • the barrel 5 is supported on an inclined plate 40 formed on the control part 4 perpendicular to the axis 50, by means of an axial stop 52 for example of the needle type which makes it possible to transmit to the control part 4 the forces applied to the barrel by the pistons 21 and the connecting rods 22 without interfering with the journaling of the barrel on its bearing 51.
  • the forces collected by the control part 4 are transmitted to the fixed plate 33 by means of an axial stop 44 interposed between the fixed plate 33 and a straight plate 45 formed at the end of the control part 4 turned towards the bottom 11 and perpendicular to the axis of rotation 10.
  • a prestressed tie rod In the case where a prestressed tie rod is used according to French Patent No. 2,211,090, this consists of a central rod 14 passing through an axial bore of the rocket 3 and the latter is supported at its ends on the two bottoms 11 and 12 of the casing and thus constitutes a tubular spacer for taking up the prestressing forces.
  • the rocket is provided at its other end with a means 6 for tightening the stop.
  • This consists of a sleeve 61 sliding axially along a cylindrical surface 34 formed at the e x - end of the rocket 3.
  • the sleeve 61 is provided with a circular stop 62 which is used to crush an elastic washer 63 against a circular ring 64 bearing on the control part 4 by means of a needle stop 65.
  • the stop 65 is supported on the outer cage of the bearing 31 of the work piece. ordered.
  • the tightening of the sleeve 61 is determined by a nut 66 which engages on a thread 35 formed at the end of the control part 4, beyond the cylindrical surface 34.
  • the nut 66 therefore makes it possible to determine, by means of the elastic washer 63, a controlled tightening force of the axial stop 44.
  • a second nut 7 makes it possible to exert a force for tightening the stop 52 of the barrel by crushing an elastic washer 71 against a circular ring 72 resting on the barrel by means of a stop 73.
  • the bearing 31 is held by the clamping yen 6.
  • the internal cage of the other bearing 32 of the control part is constituted by the fixed cage of the axial stop 44 for supporting the right plate 45 on the fixed plate 33.
  • the axial stops 44 and 52 are formed by tapered roller bearings 44 'and 52'.
  • the bearings 31 and 51 are also replaced by tapered needle bearings 41 'and 51'.
  • This arrangement simplifies assembly by eliminating the elastic washer 63, the circular support ring 64 and the stop 65.
  • the sliding sleeve 61 tightened by the nut 66 rests directly on the inner ring of the bearing 31 'whose outer ring is locked on the control part 4 which thus collects the tightening force and transmits it to the fixed plate 33.
  • the bearing 31 ' consists of a stack of bearings with tapered needles inclined with respect to the axis 10. Due to this inclination, the axial clamping force determines an elastic radial deformation of the outer rings and of the control part 4.
  • the inclination of the conical rollers which transmit the axial force to the internal ring and to the fixed plate 33 determines a radial deformation of the external ring and of the control part 4.
  • This elastic deformation of the bearings and of the control part 4 thus plays the role of the elastic washer 63 which can be eliminated.
  • the bearing 51 and the axial stop 52 are constituted by bearings with inclined tapered rollers 51 'and 52'. Therefore, the axial clamping force exerted by the nut 7 on the inner ring of the tapered bearing 51 'and transmitted to the inclined plate 40 determines an elastic radial deformation of the bearings and of the barrel 5 which plays the role of the elastic washer. 71 which can also be deleted.
  • the rocket 3 forms with the control part 4 and the barrel 5 a compact assembly maintained by the clamping sleeve 61 and the nut 66.
  • this assembly can be assembled in the workshop and the tightening of the axial stops can be adjusted in advance.
  • This forms a compact mechanical block which is placed inside the casing 1, the end of the spindle 3 placed on the side of the pump coming to engage in a countersink 15 formed on the bottom 12 of the casing, more precisely on the end of a tubular spacer 25 placed in the axis of the pump 2.
  • the mechanical assembly carried by the rocket 3 is thus maintained between the two bottoms 11 and 12 of the casing.
  • the tie rod 14 is then placed inside the spindle 3 and the spacer 25 then energized and blocked by a nut 17.
  • the prestressing effort of the tie rod 14 is collected by the rocket 3 and the spacer 25 placed in the extension of one another.
  • the mechanical assembly mounted on the rocket 3 being, so? perfectly fixed between the two bottoms 11 and 12 of the casing, or can place the heads of the connecting rods 22 and 24 on the barrel 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Centrifugal Separators (AREA)
  • Massaging Devices (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Vending Machines For Individual Products (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Fertilizing (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

1. Barrel mechanism comprising, inside a casing (1), a drive member (4) mounted pivotally on at least one fixed bearing (31, 32) defining an axis (10) about which the drive member (4) is driven rotationally, a barrel (5) rotationally fixed and mounted pivotally on the drive member (4) about an axis (50) inclined relative to the axis of rotation (10) and convergent with the latter, a first axial thrust bearing (52) interposed between the barrel (5) and an oblique plate (40) disposed on the drive member (4) perpendicularly to the axis (50) of the barrel, and a second axial thrust bearing (44) interposed between a straight plate (45) disposed on the drive member (4) perpendicularly to the axis of rotation (10) and a fixed plate (33) which, through the medium of the two axial thrust bearings (44, 52), takes up the forces parallel to the axis of rotation (10) which are applied to the barrel (5), characterised by the fact that the fixed plate (33) is disposed at one end of a central column forming a spindle (3) defining the pivot axis of the drive member (4), while at the other end of the said central column is supported a means (6) for the elastic clamping of the drive member (4) against the fixed plate (33), the cassing (1) being provided with detechable means for fastening the spindle (3), the latter forming with the drive member (4) and the barrel (5) a compact assembly adapted to be installed in and removed from the interior of the casing (1) as a unit.

Description

L'invention a pour objet un mécanisme à barillet notamment pour la commande d'une pompe à pistons axiaux.The subject of the invention is a barrel mechanism, in particular for controlling an axial piston pump.

Un tel mécanisme, connu depuis longtemps, a été décrit par exemple dans le brevet français n° 72/44532 (publié sous le n° 2211090) de la même société. Il comprend, à l'intérieur d'un carter, une pièce de commande montée tourillonnante sur deux paliers fixes définissant un axe de rotation. La pièce de commande est munie d'un plateau incliné par rapport à l'axe de rotation sur lequel s'appuie un barillet monté tourillonnant sur la pièce de commande autour d'un axe incliné par rapport à l'axe de rotation et coupant celui-ci en un centre d'oscillation du barillet L'axe de rotation du barillet est défini par un palier solidaire de ia pièce de commande, au centre du plateau incliné. La pièce de commande forme ainsi un rotor entrainé par un moteur autour de son axe de rotation et qui donne au barillet un mouvement de nutation autour du centre d'oscillation, le barillet étant bloqué en rotation par une bielle. Les pistons de la pompe, répartis régulièrement autour de l'axe de rotation s'appuient sur le barillet soit directement soit dans les pompes importantes, par l'intermédiaire de bielles munies de têtes à rotule. Les efforts exercés par les pistons sur le barillet sont transmis à la pièce de commande par une butée axiale interposée entre le barillet et le plateau oblique. La pièce de commande s'appuie elle-même sur un plateau fixe par l'intermédiaire d'une seconde butée axiale interposée entre le plateau fixe et un plateau droit solidaire de la pièce de commande et perpendiculaire à l'axe de rotation. Le plateau fixe reprend ainsi, par l'intermédiaire des deux butées axiales, les efforts parallèles à l'axe de rotation appliqués par les pistons sur le barillet dont le mouvement de nutation, commandé par la rotation de la pièce de commande, détermine le mouvement de va et vient des pistons de la pompe.Such a mechanism, which has been known for a long time, has been described for example in French patent No. 72/44532 (published under No. 2211090) of the same company. It includes, inside a casing, a control part journalled on two fixed bearings defining an axis of rotation. The control part is provided with a plate inclined with respect to the axis of rotation on which a barrel mounted swiveling on the control part around an axis inclined with respect to the axis of rotation and cutting that -this in a center of oscillation of the barrel The axis of rotation of the barrel is defined by a bearing integral with the control part, in the center of the inclined plate. The control part thus forms a rotor driven by a motor around its axis of rotation and which gives the barrel a nutation movement around the center of oscillation, the barrel being locked in rotation by a connecting rod. The pistons of the pump, distributed regularly around the axis of rotation, rest on the barrel either directly or in the large pumps, by means of rods fitted with ball heads. The forces exerted by the pistons on the barrel are transmitted to the control part by an axial stop interposed between the barrel and the oblique plate. The control part is itself supported on a fixed plate by means of a second axial stop interposed between the fixed plate and a straight plate integral with the control part and perpendicular to the axis of rotation. The fixed plate thus takes up, via the two axial stops, the forces parallel to the axis of rotation applied by the pistons on the barrel whose nutation movement, controlled by the rotation of the control part, determines the movement back and forth of the pump pistons.

Le carter à l'intérieur duquel est monté l'ensemble supporte les deux paliers de tourillonnement de la pièce de commande et la plateau fixe.The casing inside which the assembly is mounted supports the two journaling bearings of the control part and the fixed plate.

Pour alléger le carter, on a proposé, dans le brevet français n° 2.211.090 rappelé ci-dessus, de relier les deux fonds du carter par un tirant précontraint avant la mise en service de façon à reprendre les efforts appliqués par le barillet sur le plateau fixe et par conséquent le carter. Dans un mode de réalisation particulier, le tirant précontraint passe à l'intérieur d'une entretoise tubulaire qui reprend l'effort de précontrainte et qui définit d'autre part l'axe de rotation de la pièce de commande.To lighten the casing, it has been proposed in French patent No. 2,211,090 mentioned above, to connect the two casing bottoms by a prestressed tie rod before putting into service so as to take up the forces applied by the barrel on the fixed plate and consequently the casing. In a particular embodiment, the prestressed tie passes inside a tubular spacer which takes up the prestressing force and which also defines the axis of rotation of the control part.

L'invention a pour objet des perfectionnements permettant de simplifier le montage d'un mécanisme de ce type.The invention relates to improvements making it possible to simplify the mounting of a mechanism of this type.

D'autre part, la précontrainte du tirant central détermine, dans la pompe que l'on vient de décrire, un serrage de la butée axiale d'appui de pièce de commande qui résiste mieux aux efforts alternés de poussée et de traction résultant du fonctionnement de la pompe. Cependant, on ne peut, de ce fait, régler l'effort de serrage de la butée ; l'invention remédie à cet inconvénient en proposant un serrage de la butée indépendant de l'effort de précontrainte du tirant.On the other hand, the prestressing of the central tie rod determines, in the pump which has just been described, a tightening of the axial abutment for supporting the control part which better withstands the alternating thrust and traction forces resulting from operation. of the pump. However, it is therefore not possible to adjust the clamping force of the stop; the invention overcomes this drawback by proposing a tightening of the stop independent of the prestressing force of the tie rod.

Toutefois, les perfectionnements portés par la présente invention ne s'appliquent pas seulement aux pompes conformes au brevet français mais, d'une façon générale présentent également, pour des pompes du type à barillet, d'autres avantages qui seront explicités par la suite.However, the improvements brought about by the present invention do not only apply to pumps according to the French patent but, generally speaking, also have, for pumps of the barrel type, other advantages which will be explained below.

Conformément à l'invention, le plateau fixe est ménagé à une extrémité d'une colonne centrale formant une fusée définissant l'axe de tourillonnement de la pièce de commande et à l'autre extrémité de laquelle prend appui un moyen de serrage élastique de la pièce de commande contre le plateau fixe, le carter étant muni de moyens de fixation amovible de ladite fusée . Grâce à cette disposition, la fusée forme, avec la pièce de commande et le barillet, un ensemble compact susceptible d'être monté et démonté en bloc à l'intérieur du carter.According to the invention, the fixed plate is formed at one end of a central column forming a spindle defining the axis of swiveling of the control part and at the other end of which bears an elastic clamping means of the control part against the fixed plate, the casing being provided with means for detachably fixing said rocket. Thanks to this arrangement, the rocket forms, with the control part and the barrel, a compact assembly capable of being assembled and disassembled as a unit inside the casing.

Dans un mode de réalisation particulier, le moyen de serrage de la pièce de commande comprend un manchon monté coulissant à l'extrémité de la fusée muni d'une butée circulaire d'écrasement d'une rondelle élastique contre une bague d'appui solidaire de la pièce de commande et un écrou de serrage du manchon s'engageant sur un filetage ménagé sur l'extrémité de la fusée.In a particular embodiment, the clamping means of the control piece comprises a sleeve mounted to slide at the end of the spindle provided with a circular abutment for crushing an elastic washer against a support ring secured to the control part and a sleeve tightening nut engaging a thread formed on the end of the spindle.

L'invention sera mieux comprise au vu de la description qui va suivre d'un mode de réalisation particulier, donné à titre d'exemple non limitatif, et représenté sur le dessin annexé.The invention will be better understood in the light of the following description of a particular embodiment, given by way of nonlimiting example, and represented in the appended drawing.

La figure 1 représente, en coupe axiale, un mécanisme à barillet perfectionné selon l'invention.FIG. 1 represents, in axial section, an improved barrel mechanism according to the invention.

La figure 2 représente, en coupe axiale, un autre mode de réalisation.Figure 2 shows, in axial section, another embodiment.

L'ensemble du mécanisme est monté à l'intérieur d'un carter 1 qui est constitué de deux fonds 11 et 12 reliés par une paroi latérale 13. Les deux fonds 11 et 12 doivent être très rigides mais, comme on l'a indiqué, si l'on utilise un tirant central précontraint selon le B.F. 2 211 090 la paroi latérale 13 n'a aucun rôle de résistance et peut dont être très légère.The entire mechanism is mounted inside a casing 1 which consists of two bottoms 11 and 12 connected by a side wall 13. The two bottoms 11 and 12 must be very rigid but, as indicated , if a pre-stressed central tie rod according to BF 2 211 090 is used, the side wall 13 has no resistance role and can therefore be very light.

Sur l'un des fonds 12 est montée la pompe 2 dont on a représenté l'un des pistons 21.On one of the bottoms 12 is mounted the pump 2, one of which is shown pistons 21.

Les deux fonds 11 et 12 du carter sont d'autre part reliés en leur centre par une colonne centrale 3 formant fusée et sur laquelle est montée tourillonnante une pièce creuse 4 formant la pièce de commande du mécanisme. A cet effet, les pièces de commande 4 tourillonnent sur deux paliers supportés par la fusée 3. L'un de ces paliers 41 est monté à l'extrémité de la fusée 3 tournée vers la pompe 2. L'autre palier 32 est monté à la périphérie d'un plateau 33 ménagé sur l'extrémité de la fusée tournée vers l'autre fond 11 du carter.The two bottoms 11 and 12 of the casing are on the other hand connected in their center by a central column 3 forming a rocket and on which a hollow part 4 is pivotally mounted forming the control part of the mechanism. To this end, the control parts 4 rotate on two bearings supported by the rocket 3. One of these bearings 41 is mounted at the end of the rocket 3 facing the pump 2. The other bearing 32 is mounted at the periphery of a plate 33 formed on the end of the rocket facing the other bottom 11 of the casing.

Le palier 31 est monté à l'intérieur d'un alésage axial 41 ménagé à l'extrémité correspondante de la pièee de commande 4. Cependant, celle-ci est centrée sur l'autre palier 32 par l'intermédiaire d'une couronne dentée 42 solidaire de la pièce de commande 4 et sur laquelle engrène un pignon 43 qui reçoit le mouvement du moteur.The bearing 31 is mounted inside an axial bore 41 formed at the corresponding end of the control part 4. However, the latter is centered on the other bearing 32 by means of a ring gear 42 secured to the control part 4 and on which a pinion 43 which receives the movement of the motor meshes.

Les pistons 21 de la pompe sont reliés au barillet 5 par des bielles 22 munies d'articulations à rotules 23.The pistons 21 of the pump are connected to the barrel 5 by connecting rods 22 provided with ball joints 23.

Le barillet est monté tourillonnant par rapport à la pièce 24 sur un palier 51 définissant l'axe de rotation 50. Celui-ci est incliné par rapport à l'axe de rotation 10 de la pièce de commande et les deux axes se coupent en point 0 qui constitue le centre d'oscillation du barillet. En effet, celui-ci est relié au carter 2, en un endroit non situé dans le plan de la figure, par une bielle qui empêche le barillet de tourner autour de l'axe 10 mais lui permet cependant d'osciller autour du centre 0 en suivant les mouvements de son axe de rotation 50 qui décrit un cône de sommet 0 lorsque le pignon 43 détermine la rotation de la pièce de commande 4.The barrel is mounted journalled relative to the part 24 on a bearing 51 defining the axis of rotation 50. The latter is inclined relative to the axis of rotation 10 of the control part and the two axes intersect in point 0 which constitutes the center of oscillation of the barrel. Indeed, it is connected to the casing 2, at a location not located in the plane of the figure, by a connecting rod which prevents the barrel from rotating around the axis 10 but nevertheless allows it to oscillate around the center 0 by following the movements of its axis of rotation 50 which describes a top cone 0 when the pinion 43 determines the rotation of the control part 4.

Le barillet 5 prend appui sur un plateau incliné 40 ménagé sur la pièce de commande 4 perpendiculairement à l'axe 50, par l'intermédiaire d'une butée axiale 52 par exemple du type à aiguilles qui permet de transmettre à la pièce de commande 4 les efforts appliqués sur le barillet par les pistons 21 et les bielles 22 sans gêner le tourillonnement du barillet sur son palier 51.The barrel 5 is supported on an inclined plate 40 formed on the control part 4 perpendicular to the axis 50, by means of an axial stop 52 for example of the needle type which makes it possible to transmit to the control part 4 the forces applied to the barrel by the pistons 21 and the connecting rods 22 without interfering with the journaling of the barrel on its bearing 51.

Les efforts encaissés par la pièce de commande 4 sont transmis au plateau fixe 33 par l'intermédiaire d'une butée axiale 44 interposée entre le plateau fixe 33 et un plateau droit 45 ménagé à l'extrémité de la pièce de commande 4 tournée vers le fond 11 et perpendiculaire à l'axe de rotation 10.The forces collected by the control part 4 are transmitted to the fixed plate 33 by means of an axial stop 44 interposed between the fixed plate 33 and a straight plate 45 formed at the end of the control part 4 turned towards the bottom 11 and perpendicular to the axis of rotation 10.

Dans le cas ou l'on utilise un tirant précontraint selon le brevet français n° 2.211.090 celui-ci est constitué par une tige centrale 14 passant dans un alésage axial de la fusée 3 et celle-ci s'appuie à ses extrémités sur les deux fonds 11 et 12 du carter et constitue ainsi une entretoise tubulaire de reprise des efforts de précontrainte.In the case where a prestressed tie rod is used according to French Patent No. 2,211,090, this consists of a central rod 14 passing through an axial bore of the rocket 3 and the latter is supported at its ends on the two bottoms 11 and 12 of the casing and thus constitutes a tubular spacer for taking up the prestressing forces.

Ainsi, selon une première caractéristique de l'invention, alors que, dans les dispositions connues jusqu'à présent, la pièce de commande 4 s'appuyait directement sur le fond 11 du carter, selon l'invention, la butée axiale 44 de la pièce de commande prend appui sur un plateau fixé 33 ménagé sur la fusée 3.Thus, according to a first characteristic of the invention, while, in the arrangements known up to now, the control part 4 rests directly on the bottom 11 of the casing, according to the invention, the axial stop 44 of the control part is supported on a fixed plate 33 formed on the rocket 3.

Selon une autre caractéristique, la fusée est munie à son autre extrémité d'un moyen 6 de serrage de la butée. Celui-ci est constitué par un manchon 61 coulissant axialement le long d'une portée cylindrique 34 ménagée à l'ex- trémité de la fusée 3. Le manchon 61 est muni d'une butée circulaire 62 qui sert à écraser une rondelle élastique 63 contre une bague circulaire 64 prenant appui sur la pièce de commande 4 par l'intermédiaire d'une butée à aiguilles 65. Dans le mode de réalisation représenté, la butée 65 s'appuie sur la cage extérieure du palier 31 de la pièce de commande.According to another characteristic, the rocket is provided at its other end with a means 6 for tightening the stop. This consists of a sleeve 61 sliding axially along a cylindrical surface 34 formed at the e x - end of the rocket 3. The sleeve 61 is provided with a circular stop 62 which is used to crush an elastic washer 63 against a circular ring 64 bearing on the control part 4 by means of a needle stop 65. In the embodiment shown, the stop 65 is supported on the outer cage of the bearing 31 of the work piece. ordered.

Le serrage du manchon 61 est déterminé par un écrou 66 qui s'engage sur un filetage 35 ménagé à l'extrémité de la pièce de commande 4, au delà de la portée cylindrique 34.The tightening of the sleeve 61 is determined by a nut 66 which engages on a thread 35 formed at the end of the control part 4, beyond the cylindrical surface 34.

L'écrou 66 permet donc de déterminer, au moyen de la rondelle élastique 63 un effort de serrage contrôlé de la butée axiale 44.The nut 66 therefore makes it possible to determine, by means of the elastic washer 63, a controlled tightening force of the axial stop 44.

Par ailleurs, un second écrou 7 permet d'exercer un effort de serrage de la butée 52 du barillet en écrasant une rondelle élastique 71 contre une bague circulaire 72 s'appuyant sur le barillet par l'intermédiaire d'une butée 73.Furthermore, a second nut 7 makes it possible to exert a force for tightening the stop 52 of the barrel by crushing an elastic washer 71 against a circular ring 72 resting on the barrel by means of a stop 73.

Comme on vient de l'indiquer, le palier 31 est maintenu par le =yen de serrage 6 .As just indicated, the bearing 31 is held by the clamping yen 6.

De façon avantageuse, la cage interne de l'autre palier 32 de la pièce de commande est constitué par la cage fixe de la butée axiale 44 d'appui du plateau droit 45 sur le plateau fixe 33.Advantageously, the internal cage of the other bearing 32 of the control part is constituted by the fixed cage of the axial stop 44 for supporting the right plate 45 on the fixed plate 33.

Dans une variante, représentée sur la figure 2, les butées axiales 44 et 52 sont constituéespar des roulements à galets coniques 44' et 52'.In a variant, shown in FIG. 2, the axial stops 44 and 52 are formed by tapered roller bearings 44 'and 52'.

Dans ce cas, il est possible de supprimer le palier 32 dont le rôle de centrage de la pièce de commande 4 est assuré par le roulement 44' à galets coniques dont les axes sont inclinés par rapport à l'axe de rotation 10.In this case, it is possible to omit the bearing 32 whose role of centering of the control part 4 is ensured by the bearing 44 ′ with conical rollers whose axes are inclined relative to the axis of rotation 10.

Les paliers 31 et 51 sont également remplacés par des roulements à aiguilles coniques 41' et 51'.The bearings 31 and 51 are also replaced by tapered needle bearings 41 'and 51'.

Cette disposition permet de simplifier le montage en supprimant la rondelle élastique 63, la bague circulaire d'appui 64 et la butée 65.This arrangement simplifies assembly by eliminating the elastic washer 63, the circular support ring 64 and the stop 65.

En effet, dans ce second mode de réalisation, le manchon coulissant 61 serré par l'écrou 66 s'appuie directement sur la bague intérieure du palier 31' dont la bague extérieure est bloquée sur la pièce de commande 4 qui encaisse ainsi l'effort de serrage et le transmet au plateau fixe 33.In fact, in this second embodiment, the sliding sleeve 61 tightened by the nut 66 rests directly on the inner ring of the bearing 31 'whose outer ring is locked on the control part 4 which thus collects the tightening force and transmits it to the fixed plate 33.

Le palier 31' est constitué d'un empilage de roulements à aiguilles coniques inclinées par rapport à l'axe 10. Du fait de cette inclinaison, l'effort axial de serrage détermine une déformation radiale élastique des bagues extérieures et de la pièce de commande 4.The bearing 31 'consists of a stack of bearings with tapered needles inclined with respect to the axis 10. Due to this inclination, the axial clamping force determines an elastic radial deformation of the outer rings and of the control part 4.

De la même façon, au niveau du roulement 44', l'inclinaison des rouleaux coniques qui transmettent l'effort axial à la bague interne et au plateau fixe 33 détermine une déformation radiale de la bague externe et de la pièce de commande 4.Likewise, at the level of the bearing 44 ′, the inclination of the conical rollers which transmit the axial force to the internal ring and to the fixed plate 33 determines a radial deformation of the external ring and of the control part 4.

Cette déformation élastique des roulements et de la pièce de commande 4 joue ainsi le rôle de la rondelle élastique 63 qui peut être supprimée.This elastic deformation of the bearings and of the control part 4 thus plays the role of the elastic washer 63 which can be eliminated.

Il en est de même pour le serrage du barillet 5 sur le plateau incliné 40.It is the same for the tightening of the barrel 5 on the inclined plate 40.

En effet, le palier 51 et la butée axiale 52 sont constitués par des roulements à galets coniques inclinés 51' et 52'. De ce fait, l'effort de serrage axial exercé par l'écrou 7 sur la bague interne du roulement conique 51' et transmis au plateau incliné 40 détermine une déformation radiale élastique des roulements et du barillet 5 qui joue le rôle de la rondelle élastique 71 que l'on peut également supprimer.Indeed, the bearing 51 and the axial stop 52 are constituted by bearings with inclined tapered rollers 51 'and 52'. Therefore, the axial clamping force exerted by the nut 7 on the inner ring of the tapered bearing 51 'and transmitted to the inclined plate 40 determines an elastic radial deformation of the bearings and of the barrel 5 which plays the role of the elastic washer. 71 which can also be deleted.

L'utilisation de roulements coniques permet donc une simplification notable du mécanisme.The use of tapered bearings therefore allows a significant simplification of the mechanism.

Dans ces deux modes de réalisation, grâce aux dispositions qui viennent d'être décrites, la fusée 3 forme avec la pièce de commande 4 et le barillet 5 un ensemble compact maintenu par le manchon de serrage 61 et l'écrou 66.In these two embodiments, thanks to the arrangements which have just been described, the rocket 3 forms with the control part 4 and the barrel 5 a compact assembly maintained by the clamping sleeve 61 and the nut 66.

On peut de la sorte monter en atelier cet ensemble et régler à l'avance le serrage des butées axiales. On forme ainsi un bloc mécanique compact qui est placé à l'intérieur du carter 1, l'extrémité de la fusée 3 placéedu côté de la pompe venant s'engager dans un lamage 15 ménagé sur le fond 12 du carter, plus précisément sur l'extrémité d'une entretoise tubulaire 25 placée dans l'axe de la pompe 2. L'ensemble mécanique porté par la fusée 3 est ainsi maintenu entre les deux fonds 11 et 12 du carter.In this way, this assembly can be assembled in the workshop and the tightening of the axial stops can be adjusted in advance. This forms a compact mechanical block which is placed inside the casing 1, the end of the spindle 3 placed on the side of the pump coming to engage in a countersink 15 formed on the bottom 12 of the casing, more precisely on the end of a tubular spacer 25 placed in the axis of the pump 2. The mechanical assembly carried by the rocket 3 is thus maintained between the two bottoms 11 and 12 of the casing.

Le tirant 14 est alors placé à l'intérieur de la fusée 3 et de l'entretoise 25 puis mis sous tension et bloqué par un écrou 17. L'effort de précontrainte du tirant 14 est encaissé par la fusée 3 et l'entretoise 25 placées dans le prolongement l'une de l'autre. L'ensemble mécanique monté sur la fusée 3 étant, ainsi? parfaitement fixé entre les deux fonds 11 et 12 du carter, ou peut mettre en place les têtes des bielles 22 et 24 sur le barillet 5.The tie rod 14 is then placed inside the spindle 3 and the spacer 25 then energized and blocked by a nut 17. The prestressing effort of the tie rod 14 is collected by the rocket 3 and the spacer 25 placed in the extension of one another. The mechanical assembly mounted on the rocket 3 being, so? perfectly fixed between the two bottoms 11 and 12 of the casing, or can place the heads of the connecting rods 22 and 24 on the barrel 5.

Le montage de l'ensemble est ainsi considérablement simplifié grâce aux dispositions selon l'invention qui permettent de réaliser en atelier tous les réglages du mécanisme.The assembly of the assembly is thus considerably simplified thanks to the arrangements according to the invention which make it possible to carry out in the workshop all the adjustments of the mechanism.

De la même façon, en cas d'avarie, il est facile, après démontage du tirant central 14, de retirer l'ensemble mécanique et de le remplacer par un ensemble de rechange réglé à l'avance.In the same way, in the event of damage, it is easy, after dismantling the central tie rod 14, to remove the mechanical assembly and to replace it with a spare assembly adjusted in advance.

Bien entendu, l'invention ne se limite pas aux détails des modes de réalisation qui viennent d'être décrits et que l'on pourrait modifier notamment par l'emploi de moyens équivalents. C'est ainsi que l'on pourrait utili- ser des butées et paliers lisses de type approprié à la place des roulements à galets coniques ou cylindriques qui ont été décrits.Of course, the invention is not limited to the details of the embodiments which have just been described and which could be modified in particular by the use of equivalent means. Thus one could utili- s er stops and bearings for smooth appropriate type instead of conical or cylindrical roller bearings which have been described.

En outre, comme on l'a déjà indiqué, l'invention a été décrite dans le cas particulier d'un mécanisme où les deux fonds du carter sont reliés par un tirant précontraint, mais les dispositions selon l'invention présentent les mêmes avantages pour les pompes à barillet d'autres types.In addition, as already indicated, the invention has been described in the particular case of a mechanism where the two bases of the casing are connected by a prestressed tie rod, but the arrangements according to the invention have the same advantages for barrel pumps of other types.

Claims (5)

1.- Mécanisme à barillet comprenant, à l'intérieur d'un carter (1), une pièce de commande (4) montée tourillonnante sur au moins un palier fixe (31, 32) définissant un axe (10) autour duquel la pièce de commande (4) est entrainée en rotation, un barillet (5) bloqué en rotation et monté tourillonnant sur la pièce de commande (4) autour d'un axe (50) incliné par rapport à l'axe de rotation (10) et concourrant avec celui-ci, une première butée axiale (52) interposée entre le barillet (5) et un plateau oblique(40) ménagé sur la pièce de commande (4) perpendiculairement à l'axe du barillet (50) et une seconde butée axiale (44)interposée entre un plateau droit (45) ménagé sur la pièce de commande (4) perpendiculairement à l'axe de rotation (10) et un plateau fixe (33) reprenant, par l'intermédiaire des deux butées axiales (44, 52), les efforts parallèles à l'axe de rotation (10) appliqués sur le barillet (5), caractérisé par le fait que le plateau fixe (33) est ménagé à une extrémité d'une colonne centrale formant une fusée (3) définissant l'axe de tourillonnement de la pièce de commande (4) et à l'autre extrémité de laquelle prend appui un moyen (6) de serrage élastique de la pièce de commande (4) contre le plateau fixe (33), le carter (1) étant muni de moyens de fixation amovible de la fusée (3), cette dernière formant avec la pièce de commande (4) et le barillet (5) un ensemble compact susceptible d'être monté et démonté en bloc à l'intérieur du carter (1).1.- Barrel mechanism comprising, inside a casing (1), a control part (4) pivotally mounted on at least one fixed bearing (31, 32) defining an axis (10) around which the part control (4) is rotated, a barrel (5) locked in rotation and mounted journalling on the control part (4) about an axis (50) inclined relative to the axis of rotation (10) and concurrent with it, a first axial stop (52) interposed between the barrel (5) and an oblique plate (40) formed on the control part (4) perpendicular to the axis of the barrel (50) and a second stop axial (44) interposed between a straight plate (45) formed on the control part (4) perpendicular to the axis of rotation (10) and a fixed plate (33) resuming, via the two axial stops (44 , 52), the forces parallel to the axis of rotation (10) applied to the barrel (5), characterized in that the fixed plate (33) is formed at one end of a c central column forming a spindle (3) defining the journal axis of the control part (4) and at the other end of which bears a means (6) for elastic clamping of the control part (4) against the fixed plate (33), the casing (1) being provided with means for detachably fixing the rocket (3), the latter forming, with the control part (4) and the barrel (5), a compact assembly capable of being mounted and disassembled as a block inside the casing (1). 2.- Mécanisme à barillet selon la revendication 1, caractérisé par le fait que le moyen (6) de serrage de la pièce de commande (4) comprend un manchon (61) monté coulissant à l'extrémité de la fusée (3), muni d'une butée circulaire (62) d'écrasement d'une rondelle élastique (63) contre une bague circulaire (64) prenant appui sur la pièce de commande (4) et un écrou (66) de serrage du manchon (61) s'engageant sur un filetage ménagé sur l'extrémité de la fusée (3).2. Barrel mechanism according to claim 1, characterized in that the means (6) for clamping the control part (4) comprises a sleeve (61) mounted to slide at the end of the rocket (3), provided with a circular stop (62) for crushing an elastic washer (63) against a circular ring (64) bearing on the control part (4) and a nut (66) for tightening the sleeve (61) engaging on a thread formed on the end of the spindle (3). 3.- Mécanisme à barillet selon la revendication 1, caractérisé par le fait que l'un des paliers (32) de tourillonnement de la pièce de commande (4) est interposé entre la périphérie externe du plateau fixe (33) et la périphérie interne d'une couronne (42) solidaire du plateau droit (45).3. Barrel mechanism according to claim 1, characterized in that one of the bearings (32) of the journaling of the control part (4) is interposed between the outer periphery of the fixed plate (33) and the inner periphery a crown (42) integral with the right plate (45). 4.- Mécanisme à barillet selon la revendication 1, caractérisé par le fait que chaque butée axiale (52, 44) est constituée par un roulement (52', 44') à galets coniques assurant simultanément la transmission des efforts axiaux et le centrage, respectivement de la pièce de commande (4) et du barillet (5) sur leurs axes de tourillonnement respectifs.4. Barrel mechanism according to claim 1, characterized in that each axial stop (52, 44) is constituted by a bearing (52 ', 44') with conical rollers simultaneously ensuring the transmission of axial forces and centering, respectively of the control part (4) and of the barrel (5) on their respective journaling axes. 5.- Mécanisme à barillet selon la revendication 1, caractérisé par le fait qu'au moins l'un des paliers (31) de tourillonnement de la pièce de commande (4) est constitué par un roulement (31') à galets coniques inclinés par rapport à l'axe de rotation (10) et que le moyen (6) de serrage de la pièce de commande est constitué par un manchon (61) s'appuyant sur la bague interne du roulement (31') dont la bague externe est bloquée sur la pièce de commande (4) et un écrou (66) de serrage du manchon, s'engageant sur un filetage correspondant ménagé sur l'extrémité de la fusée (3).5. Barrel mechanism according to claim 1, characterized in that at least one of the bearings (31) of the journal of the workpiece control (4) is constituted by a bearing (31 ') with conical rollers inclined with respect to the axis of rotation (10) and that the means (6) for tightening the control part is constituted by a sleeve (61) bearing on the inner ring of the bearing (31 ') whose outer ring is locked on the control part (4) and a nut (66) for tightening the sleeve, engaging on a corresponding thread formed on the end of the rocket (3).
EP82400975A 1981-05-27 1982-05-26 Swash-plate mechanism Expired EP0069605B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400975T ATE9175T1 (en) 1981-05-27 1982-05-26 SWASHPLATE MECHANISM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8110602 1981-05-27
FR8110602A FR2506857A1 (en) 1981-05-27 1981-05-27 BARREL MECHANISM

Publications (2)

Publication Number Publication Date
EP0069605A1 true EP0069605A1 (en) 1983-01-12
EP0069605B1 EP0069605B1 (en) 1984-08-29

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ID=9258959

Family Applications (1)

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EP82400975A Expired EP0069605B1 (en) 1981-05-27 1982-05-26 Swash-plate mechanism

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EP (1) EP0069605B1 (en)
JP (1) JPS57200678A (en)
AT (1) ATE9175T1 (en)
CA (1) CA1203711A (en)
DE (1) DE3260625D1 (en)
DK (1) DK151491C (en)
ES (1) ES8304271A1 (en)
FR (1) FR2506857A1 (en)
NO (1) NO158433C (en)
SU (1) SU1259966A3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548284B1 (en) * 1983-07-01 1987-10-23 Creusot Loire OBLIQUE PLATE MECHANISM FOR THE CONTROL OF A PUMP
US9545643B2 (en) 2008-10-22 2017-01-17 Graco Minnesota Inc. Portable airless sprayer
JP5739340B2 (en) 2008-10-22 2015-06-24 グラコ ミネソタ インコーポレーテッド Portable airless sprayer
US9016599B2 (en) 2009-05-07 2015-04-28 Graco Minnesota Inc. Wobble assembly for fluid pumping mechanism
US11986850B2 (en) 2018-04-10 2024-05-21 Graco Minnesota Inc. Handheld airless sprayer for paints and other coatings
CN115739435A (en) 2019-05-31 2023-03-07 固瑞克明尼苏达有限公司 Hand-held fluid sprayer
US10968903B1 (en) 2020-06-04 2021-04-06 Graco Minnesota Inc. Handheld sanitary fluid sprayer having resilient polymer pump cylinder
US10926275B1 (en) 2020-06-25 2021-02-23 Graco Minnesota Inc. Electrostatic handheld sprayer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986091A (en) * 1949-03-03 1951-07-26 Usines Tanvez S A Compressor for oil or other liquid with pistons actuated by a cam plate
GB685138A (en) * 1950-02-10 1952-12-31 Winget Ltd Improvements in or relating to reciprocating pumps
FR2204230A5 (en) * 1972-10-20 1974-05-17 Dowell Schlumberger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212693Y2 (en) * 1971-08-03 1977-03-22
FR2211090A5 (en) * 1972-12-14 1974-07-12 Creusot Loire
US3862587A (en) * 1973-09-24 1975-01-28 Parker Hannifin Corp Hydraulic motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986091A (en) * 1949-03-03 1951-07-26 Usines Tanvez S A Compressor for oil or other liquid with pistons actuated by a cam plate
GB685138A (en) * 1950-02-10 1952-12-31 Winget Ltd Improvements in or relating to reciprocating pumps
FR2204230A5 (en) * 1972-10-20 1974-05-17 Dowell Schlumberger

Also Published As

Publication number Publication date
ATE9175T1 (en) 1984-09-15
NO158433C (en) 1988-09-07
JPH0125896B2 (en) 1989-05-19
DE3260625D1 (en) 1984-10-04
NO158433B (en) 1988-05-30
CA1203711A (en) 1986-04-29
JPS57200678A (en) 1982-12-08
DK235782A (en) 1982-11-28
FR2506857A1 (en) 1982-12-03
NO821441L (en) 1982-11-29
ES511958A0 (en) 1983-02-16
FR2506857B1 (en) 1985-05-24
EP0069605B1 (en) 1984-08-29
DK151491C (en) 1988-08-08
SU1259966A3 (en) 1986-09-23
ES8304271A1 (en) 1983-02-16
DK151491B (en) 1987-12-07

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