EP0302786B1 - Machine rotative à pistons et à barillet avec rotule de centrage fixe - Google Patents

Machine rotative à pistons et à barillet avec rotule de centrage fixe Download PDF

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Publication number
EP0302786B1
EP0302786B1 EP88402009A EP88402009A EP0302786B1 EP 0302786 B1 EP0302786 B1 EP 0302786B1 EP 88402009 A EP88402009 A EP 88402009A EP 88402009 A EP88402009 A EP 88402009A EP 0302786 B1 EP0302786 B1 EP 0302786B1
Authority
EP
European Patent Office
Prior art keywords
barrel
plate
machine according
type joint
housing
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 - Lifetime
Application number
EP88402009A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0302786A1 (fr
Inventor
Michel Drevet
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.)
Individual
Original Assignee
Individual
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
Priority claimed from FR8711193A external-priority patent/FR2619166B2/fr
Application filed by Individual filed Critical Individual
Priority to AT88402009T priority Critical patent/ATE58416T1/de
Publication of EP0302786A1 publication Critical patent/EP0302786A1/fr
Application granted granted Critical
Publication of EP0302786B1 publication Critical patent/EP0302786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F01B3/02—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis with wobble-plate
    • 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 present invention relates to a rotary piston and barrel machine for pumps, hydraulic motors or compressors.
  • the invention relates to a machine of the type subject of FR-A 2 588 617 filed by the Applicant in which the rotary piston and barrel machine comprises a thrust plate inclined with respect to its coincident geometric axis of rotation with the geometric axis of the barrel, the central part of the inclined plate comprising a spherical bearing which rotates freely around a fixed central ball joint, integral with a half-shaft anchored directly in the central part of the barrel, while the latter is connected by a rigid peripheral casing which covers the rear of the crankshaft behind which it closes, and in this machine the central spherical ball joint is secured to a second rigid half-shaft, located opposite the first with which it is aligned, this second half-shaft being, by its opposite end, rigidly anchored on the rear part of the casing of the machine.
  • the invention aims first of all to transfer the various forces and constraints to which the ball joint is subjected to the barrel of the machine because it has been found that the barrel constitutes an extremely rigid assembly unlike the casing in which the thrust plate is housed and the motion transmitter.
  • the invention also makes it possible to automatically compensate for the differential expansions which may occur during the operation of the machine.
  • the invention makes it possible, by subjecting the thrust plate to a prestress, to compensate for the forces exerted on it during operation.
  • the rotary piston and barrel machine comprising a thrust plate inclined with respect to its geometric axis of rotation which coincides with the geometric axis of the barrel, the central part of the inclined plate comprising a spherical bearing which rotates freely around a fixed central ball joint anchored to the central part of the barrel while the latter is connected to a rigid peripheral casing, the central ball joint being integral with a rigid half-shaft connected to the rear part of the casing is characterized by at least one rod rigidly connected to the ball joint as well as to a piston arranged in a bore of the barrel and subjected to the action of a fluid under pressure, so that at least part of the axial stresses applied to the ball joint transmitted to the barrel without being applied to the casing.
  • the machine shown according to the embodiment of FIG. 1 comprises a casing 1 connected to the periphery of a barrel 2 to which are fixed tie rods 3 forming at the same time spacers and used for fixing and supporting a body 4 delimiting cylinders 6 in which pistons slide 7.
  • the body 4 constitutes either a pump body or a motor body depending on whether the cylinders 6 are used for the delivery of a fluid or for the admission of a fluid intended to drive the pistons 7.
  • the body 4 is well known, as is the arrangement of the pistons 7 in the cylinders 6 and, therefore, this part of the machine is not described further.
  • the barrel 2 delimits sheaths 8, only one of which is visible, and in each of which can be moved a slide 9 connected by a rod 10 to one of the pistons 7.
  • the slide 9 contains bearings 11 for a cylindrical head 12 of connecting rods, the foot 13 of which is also cylindrical, is articulated in one of several bearings 14 which contains an oscillating thrust plate 15.
  • the thrust plate 15 is carried by a ball joint 16 to which it is connected by hemispherical rings 17 forming bearings.
  • the thrust plate 15 is prevented from turning freely by a reaction rod 18 articulated by its spherical head 19 in a clamp 20 rigidly connected by a frame 21 which is itself connected both to the casing 1 and to the barrel 2 by gussets 22.
  • the frame 21 forms a bearing support 23 for a motor shaft 24 provided with a pinion 25.
  • the motor shaft 24 is further carried in a bearing 26 connected to the rear part 1a of the casing 1.
  • the rear part 1a above is itself reinforced by a plate 27 which can form a thrust plate and which cooperates with said part posterior 1a for maintaining a thrust bearing 28 of a motion transmitter 29 constituted in the form of a beveled disc comprising a toothed crown 30 meshing with the pinion 25.
  • the motion transmitter 29 carries a thrust bearing 31 which connects it to the oscillating thrust plate 15.
  • the motion transmitter 29 is carried by bearings 32, the inner cage of which is threaded on a half-shaft constituted by a tubular tail 33 rigidly connected to the ball joint 16, said tubular tail possibly being formed in one piece with said ball joint.
  • the tubular tail 33 is coaxial with the geometric axis of the barrel 2 and it is engaged in an opening 34 of the plate 27.
  • a stop ring 35 is preferably mounted in an adjustable manner on the end of the tubular tail 33 to bear, preferably by an elastic member 36, for example a conical elastic washer, against the plate 27.
  • a preload block 27a is interposed between the plate 27 and the rear plate 1a of the casing.
  • the part of the ball joint 16 facing the barrel 2 is fixed to the latter by means of a key 37.
  • the ball joint 16 is also carried by the threaded part of a rod 38 concentric with the tubular tail 33.
  • the rod 38 forms a part of larger diameter 38a guided in a bore 39 of the barrel 2 to which it is tightly connected by seals 40.
  • the rod 38 forms a part of smaller diameter 38b which extends inside of the tubular tail 33, defining therewith an annular chamber 41.
  • the portion of smaller diameter 38b is tightly connected to the tubular tail 33 by a seal 42 and it is moreover mechanically connected to said tubular tail 33 by a stop lock nut 43 which bears on the free end of said tubular tail 33.
  • the lock nut 43 thus makes it possible to block the position of the rod 38 in the ball joint 16 at the desired adjustment so as to leave a clearance 16a in the housing on the barrel 2 of the cylindrical front part of the ball joint 16.
  • a channel 44 makes it possible to connect the annular chamber 41 described above to a source of pressurized fluid, in particular oil, so that this oil is brought by said annular chamber to distribution channels 45 provided in the ball joint 16 and making it possible to lead the oil to the hemispherical rings 17 forming a ball bearing.
  • the large diameter portion 38a of the rod 38 is rigidly connected to a piston 46 disposed in a cylinder 47 of the barrel 2.
  • the rear face of the piston 46 defines with the cylinder 47 a chamber 48 for the admission of a regulating fluid under pressure, in particular oil from an adjustable source 49.
  • the source 49 can be constituted by a compressor or a regulator applying in the chamber 48 a setting pressure which can for example depend on the working pressure prevailing in the body 4.
  • the barrel assembly 2, pulling 3, body 4 constitutes an extremely rigid unit so that the pressure developed in the chamber 48 can be a pressure high enough to balance at least part of the opposing forces applied to the ball 16 by the plate of oscillating thrust 15 during operation of the machine.
  • the pressure in the chamber 48 exerted on the piston 46 is transmitted by the different parts of the rod 38 to the ball joint and to the stop nut 43 which bears against the tubular shank 33, and the stop ring 35 can apply part of the forces on the plate 27 holding the bearing 28 without these forces being applied to the casing 1.
  • the clearance 16a provided in the housing on the barrel 2 of the cylindrical front part of. the ball joint 16 is in fact intended to control the stroke of the piston 46, the role of which is to pull the ball joint 16 to apply to it a part of the forces during pumping in order to relieve the thrust bearings 28 and 31.
  • a chamber 48 By suitably choosing the pressure in) a chamber 48, it is possible, if desired, to ensure that all the stresses which are exerted axially on the ball joint 16 are transmitted by the tubular tail 33 without being transmitted to the casing 1 which can then be carried out in a particularly light manner.
  • FIG. 2 illustrates a simplified variant according to which the same reference numbers designate the same members known in FIG. 1.
  • the ball joint 16 is directly fixed to the threaded part of a rod 38 1 itself connected to a piston 46 1 delimiting with a cylinder 47 1 of the barrel 2 a chamber 48 1 to develop a compensation pressure.
  • a hydraulic cylinder 50 is provided in the plate 27 reinforcing the rear part 1a of the casing 1, said hydraulic cylinder 50 acting on the bearing 28 against which the motion transmitter 29 abuts.
  • the hydraulic cylinder can be constituted as shown diagrammatically by a simple annular seal.
  • the above arrangement allows, as is apparent from consideration of the drawing and the preceding explanations, to distribute the hydraulic pressures intended to balance the axial stresses, on the one hand, on the barrel 2 and, on the other hand, on the plate 27.
  • the pressure that can be exerted by the hydraulic cylinder 50 is applied to the motion transmitter 29 and by the thrust bearing 31 to the oscillating thrust plate 15, which makes it possible to reduce and practically cancel under certain operating conditions the axial forces between the ball joint 16 and the hemispherical rings 17 of the oscillating thrust plate 15.
  • Fig. 2 shows that the hydraulic cylinder 50 is connected by a conduit 51 to a pressure regulator 52 which can be controlled by any suitable member for example a computer making it possible to vary the compensation pressures exerted both by the hydraulic cylinder 50 and by the piston 46 1 depending on the cyclic pressure variations exerted by the thrust plate 15 on the ball joint 16.
  • a pressure regulator 52 which can be controlled by any suitable member for example a computer making it possible to vary the compensation pressures exerted both by the hydraulic cylinder 50 and by the piston 46 1 depending on the cyclic pressure variations exerted by the thrust plate 15 on the ball joint 16.
  • the use of the shim 27a in the production of FIG. 2 means that it provides additional security in the event of failure of the hydraulic compensation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Actuator (AREA)
EP88402009A 1987-08-06 1988-08-02 Machine rotative à pistons et à barillet avec rotule de centrage fixe Expired - Lifetime EP0302786B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88402009T ATE58416T1 (de) 1987-08-06 1988-08-02 Rotierende trommelkolbenmaschine mit festem, zentrierendem kebelgelenk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8711193 1987-08-06
FR8711193A FR2619166B2 (fr) 1985-10-14 1987-08-06 Machine rotative a pistons et a barillet avec rotule de centrage fixe

Publications (2)

Publication Number Publication Date
EP0302786A1 EP0302786A1 (fr) 1989-02-08
EP0302786B1 true EP0302786B1 (fr) 1990-11-14

Family

ID=9353967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402009A Expired - Lifetime EP0302786B1 (fr) 1987-08-06 1988-08-02 Machine rotative à pistons et à barillet avec rotule de centrage fixe

Country Status (12)

Country Link
US (1) US4911064A (no)
EP (1) EP0302786B1 (no)
JP (1) JP2567921B2 (no)
CN (1) CN1012198B (no)
AT (1) ATE58416T1 (no)
CA (1) CA1304985C (no)
DE (1) DE3861077D1 (no)
ES (1) ES2018627B3 (no)
GR (1) GR3001391T3 (no)
NO (1) NO167824C (no)
SU (1) SU1748659A3 (no)
UA (1) UA9866A (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902372A1 (de) * 1989-01-27 1990-08-02 Hoechst Ag Verfahren zur herstellung von d((pfeil hoch)+(pfeil hoch))-2-(4-acetylphenoxy)- propionsaeureestern
JPH07179504A (ja) * 1993-12-22 1995-07-18 Fujimori Kogyo Kk 微粒子ポリマーおよびその製造方法
JPH09137775A (ja) * 1995-09-14 1997-05-27 Calsonic Corp 容量可変斜板式コンプレッサ
US6719786B2 (en) * 2002-03-18 2004-04-13 Medtronic, Inc. Flexible annuloplasty prosthesis and holder
US7118595B2 (en) * 2002-03-18 2006-10-10 Medtronic, Inc. Flexible annuloplasty prosthesis and holder
US8007530B2 (en) * 2005-09-30 2011-08-30 Medtronic, Inc. Tool and method for implanting an annuloplasty prosthesis
US9011528B2 (en) * 2005-09-30 2015-04-21 Medtronic, Inc. Flexible annuloplasty prosthesis
MD309Y (ro) * 2010-02-23 2010-12-31 Артур НИКИШОВ Maşină cu piston axial
JP6688724B2 (ja) * 2016-03-28 2020-04-28 株式会社神戸製鋼所 液圧回転機

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157995A (en) * 1962-07-11 1964-11-24 Int Harvester Co Hydromechanical power transmission
US3862588A (en) * 1969-07-31 1975-01-28 Firm Of Constantin Rauch Method of operating an axial piston machine having a hydrostatic bearing load relief device
GB1309343A (en) * 1971-02-25 1973-03-07 Nutron Corp Mechanical driving devices
FR2211090A5 (no) * 1972-12-14 1974-07-12 Creusot Loire
NL7410532A (nl) * 1974-08-06 1976-02-10 Philips Nv Inrichting met tenminste drie heen- en weer- beweegbare zuigervormige lichamen.
NL7900076A (nl) * 1979-01-05 1980-07-08 Philips Nv Drijfwerk voor een machine met heen- en weergaande zuigers met variabele slag.
FR2548284B1 (fr) * 1983-07-01 1987-10-23 Creusot Loire Mecanisme a plateau oblique, pour la commande d'une pompe
FR2588617B1 (fr) * 1985-10-14 1989-11-24 Drevet Michel Machine rotative a pistons et a barillet avec rotule de centrage fixe.

Also Published As

Publication number Publication date
CN1012198B (zh) 1991-03-27
GR3001391T3 (en) 1992-09-11
UA9866A (uk) 1996-09-30
NO883478D0 (no) 1988-08-04
ES2018627B3 (es) 1991-04-16
NO167824C (no) 1991-12-11
US4911064A (en) 1990-03-27
NO883478L (no) 1989-02-07
CN1032222A (zh) 1989-04-05
SU1748659A3 (ru) 1992-07-15
EP0302786A1 (fr) 1989-02-08
JPS6463663A (en) 1989-03-09
DE3861077D1 (de) 1990-12-20
JP2567921B2 (ja) 1996-12-25
NO167824B (no) 1991-09-02
ATE58416T1 (de) 1990-11-15
CA1304985C (en) 1992-07-14

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