EP0069605A1 - Taumelscheibenmechanismus - Google Patents

Taumelscheibenmechanismus 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
Authority
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
Other languages
English (en)
French (fr)
Other versions
EP0069605B1 (de
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/de
Application granted granted Critical
Publication of EP0069605B1 publication Critical patent/EP0069605B1/de
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)
  • Fertilizing (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Vending Machines For Individual Products (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP82400975A 1981-05-27 1982-05-26 Taumelscheibenmechanismus Expired EP0069605B1 (de)

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
FR8110602 1981-05-27
FR8110602A FR2506857A1 (fr) 1981-05-27 1981-05-27 Mecanisme a barillet

Publications (2)

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

Family

ID=9258959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400975A Expired EP0069605B1 (de) 1981-05-27 1982-05-26 Taumelscheibenmechanismus

Country Status (10)

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

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
WO2010047800A2 (en) 2008-10-22 2010-04-29 Graco Minnesota Inc. Portable airless sprayer
EP2427273B1 (de) * 2009-05-07 2017-07-12 Graco Minnesota Inc. Axialschlaganordnung für flüssigkeitspumpmechanismus
CN112368082B (zh) 2018-04-10 2022-11-08 固瑞克明尼苏达有限公司 用于油漆和其他涂料的手持式无气喷涂器
WO2020243438A1 (en) 2019-05-31 2020-12-03 Graco Minnesota Inc. Handheld 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 (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
FR2204230A5 (de) * 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 (de) * 1971-08-03 1977-03-22
FR2211090A5 (de) * 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 (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
FR2204230A5 (de) * 1972-10-20 1974-05-17 Dowell Schlumberger

Also Published As

Publication number Publication date
NO821441L (no) 1982-11-29
EP0069605B1 (de) 1984-08-29
DE3260625D1 (en) 1984-10-04
NO158433C (no) 1988-09-07
JPS57200678A (en) 1982-12-08
DK151491C (da) 1988-08-08
ES511958A0 (es) 1983-02-16
ES8304271A1 (es) 1983-02-16
DK151491B (da) 1987-12-07
DK235782A (da) 1982-11-28
FR2506857B1 (de) 1985-05-24
FR2506857A1 (fr) 1982-12-03
SU1259966A3 (ru) 1986-09-23
ATE9175T1 (de) 1984-09-15
NO158433B (no) 1988-05-30
JPH0125896B2 (de) 1989-05-19
CA1203711A (fr) 1986-04-29

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