EP0069605B1 - Mécanisme à barillet - Google Patents

Mécanisme à barillet Download PDF

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Publication number
EP0069605B1
EP0069605B1 EP82400975A EP82400975A EP0069605B1 EP 0069605 B1 EP0069605 B1 EP 0069605B1 EP 82400975 A EP82400975 A EP 82400975A EP 82400975 A EP82400975 A EP 82400975A EP 0069605 B1 EP0069605 B1 EP 0069605B1
Authority
EP
European Patent Office
Prior art keywords
drive member
barrel
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.)
Expired
Application number
EP82400975A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0069605A1 (fr
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
Original Assignee
Creusot Loire 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 filed Critical Creusot Loire SA
Priority to AT82400975T priority Critical patent/ATE9175T1/de
Publication of EP0069605A1 publication Critical patent/EP0069605A1/fr
Application granted granted Critical
Publication of EP0069605B1 publication Critical patent/EP0069605B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • 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 known for a long time, has been described for example in French patent 2,211,090 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 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.
  • 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 the lacquer takes support an elastic tightening 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 part comprises a sleeve mounted to slide at the end of the spindle provided with a circular abutment for crushing an elastic washer against a circular ring resting on the control part and a sleeve tightening nut engaging a thread formed on the end of the spindle.
  • Fig. 1 shows, in axial section, a barrel mechanism according to the invention.
  • Fig. 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 is used according to FR-A 2211 090, the side wall 13 has no role of resistance and can therefore be very light.
  • the pump 2 of which one of the pistons 21 has been shown On one of the bottoms 12 is mounted the pump 2 of which one of the pistons 21 has been shown.
  • 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 part 4 pivots on two bearings supported by the rocket 3.
  • One of these bearings 31 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 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 meshes which receives the movement of the motor.
  • 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 4 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, 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 in 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 2211 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.
  • a means 6 for tightening the stop can be constituted by a sleeve 61 sliding axially along a cylindrical seat 34 formed at the end of the rocket 3.
  • the sleeve 61 can be provided with a circular stop 62 which serves 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 control part .
  • 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 means 6.
  • the internal cage of the other bearing 32 of the control part consists of 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 35 '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 ', the outer ring of which is locked on the control part 4 which thus collects the 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. It is the same for the tightening of the barrel 5 on the inclined plate 40.
  • 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 elastic washer 71 which can also be removed.
  • 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. It is possible to so mount this assembly in the workshop and adjust the tightness of the axial stops 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 is thus perfectly fixed between the two bottoms 11 and 12 of the casing, or can install the heads of the connecting rods 22 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)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Vending Machines For Individual Products (AREA)
  • Fertilizing (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP82400975A 1981-05-27 1982-05-26 Mécanisme à barillet Expired EP0069605B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400975T ATE9175T1 (de) 1981-05-27 1982-05-26 Taumelscheibenmechanismus.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8110602A FR2506857A1 (fr) 1981-05-27 1981-05-27 Mecanisme a barillet
FR8110602 1981-05-27

Publications (2)

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

Family

ID=9258959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400975A Expired EP0069605B1 (fr) 1981-05-27 1982-05-26 Mécanisme à barillet

Country Status (10)

Country Link
EP (1) EP0069605B1 (es)
JP (1) JPS57200678A (es)
AT (1) ATE9175T1 (es)
CA (1) CA1203711A (es)
DE (1) DE3260625D1 (es)
DK (1) DK151491C (es)
ES (1) ES511958A0 (es)
FR (1) FR2506857A1 (es)
NO (1) NO158433C (es)
SU (1) SU1259966A3 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548284B1 (fr) * 1983-07-01 1987-10-23 Creusot Loire Mecanisme a plateau oblique, pour la commande d'une pompe
US9545643B2 (en) 2008-10-22 2017-01-17 Graco Minnesota Inc. Portable airless sprayer
CN103977922B (zh) 2008-10-22 2017-01-11 固瑞克明尼苏达有限公司 便携式无空气喷雾器
JP5727464B2 (ja) * 2009-05-07 2015-06-03 グラコ ミネソタ インコーポレーテッド 流体ポンプ装置用斜板機構
EP3774069A1 (en) 2018-04-10 2021-02-17 Graco Minnesota Inc. Handheld airless sprayer for paints and other coatings
CN113950379B (zh) 2019-05-31 2023-09-15 固瑞克明尼苏达有限公司 手持式流体喷雾器
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986091A (fr) * 1949-03-03 1951-07-26 Usines Tanvez S A Compresseur pour huile ou autre liquide avec pistons actionnés par un plateaucame
GB685138A (en) * 1950-02-10 1952-12-31 Winget Ltd Improvements in or relating to reciprocating pumps
JPS5212693Y2 (es) * 1971-08-03 1977-03-22
FR2204230A5 (es) * 1972-10-20 1974-05-17 Dowell Schlumberger
FR2211090A5 (es) * 1972-12-14 1974-07-12 Creusot Loire
US3862587A (en) * 1973-09-24 1975-01-28 Parker Hannifin Corp Hydraulic motor

Also Published As

Publication number Publication date
FR2506857B1 (es) 1985-05-24
NO158433B (no) 1988-05-30
CA1203711A (fr) 1986-04-29
ES8304271A1 (es) 1983-02-16
DK151491C (da) 1988-08-08
JPH0125896B2 (es) 1989-05-19
DK235782A (da) 1982-11-28
FR2506857A1 (fr) 1982-12-03
JPS57200678A (en) 1982-12-08
DK151491B (da) 1987-12-07
NO821441L (no) 1982-11-29
DE3260625D1 (en) 1984-10-04
NO158433C (no) 1988-09-07
ES511958A0 (es) 1983-02-16
ATE9175T1 (de) 1984-09-15
EP0069605A1 (fr) 1983-01-12
SU1259966A3 (ru) 1986-09-23

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