EP0263218A1 - Flüssigkeitsmechanismus mit Fluidverteilscheibe und Gegenscheibe - Google Patents

Flüssigkeitsmechanismus mit Fluidverteilscheibe und Gegenscheibe Download PDF

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Publication number
EP0263218A1
EP0263218A1 EP86402228A EP86402228A EP0263218A1 EP 0263218 A1 EP0263218 A1 EP 0263218A1 EP 86402228 A EP86402228 A EP 86402228A EP 86402228 A EP86402228 A EP 86402228A EP 0263218 A1 EP0263218 A1 EP 0263218A1
Authority
EP
European Patent Office
Prior art keywords
orifices
orifice
communication
pair
cylinder
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
EP86402228A
Other languages
English (en)
French (fr)
Other versions
EP0263218B1 (de
Inventor
Louis Bernard Bigo
Marc Lucien Perot
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.)
Poclain Hydraulics France SA
Original Assignee
Poclain Hydraulics France 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
Priority to FR8513968A priority Critical patent/FR2587761B1/fr
Application filed by Poclain Hydraulics France SA filed Critical Poclain Hydraulics France SA
Priority to DE8686402228T priority patent/DE3668038D1/de
Priority to EP19860402228 priority patent/EP0263218B1/de
Publication of EP0263218A1 publication Critical patent/EP0263218A1/de
Application granted granted Critical
Publication of EP0263218B1 publication Critical patent/EP0263218B1/de
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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • F04B1/0465—Distribution members, e.g. valves plate-like

Definitions

  • Known pressurized fluid motors in particular hydraulic motors, include fluid distribution glasses to their successive cylinders and, sometimes, distribution counter-windows.
  • the latter have essentially been provided as wearing parts enabling the initial operating characteristics of the mechanism to be preserved, even after a long period of operation.
  • the invention relates to such mechanisms, being relative to a hydraulic mechanism, motor or pump, constituted by a cylinder block having a face for communication with the outside, a plurality of cylinders, which are formed in the block. cylinders and inside each of which slides a piston, each cylinder being connected to said communication face of the cylinder block by at least one cylinder duct which opens into this communication face by a cylinder orifice, a cam relative to which the cylinder block is rotatably mounted about an axis of rotation, on the surface of which the pistons are capable of being supported and which comprises a plurality of ramps succeeding each other in pairs of ramps, and a distribution glass which is held integral in rotation with the cam, which has a communication face and which has as many pairs of orifices opening into its communication face as there are pairs of ramps, the first gold ifice of a pair of orifices being capable of being placed in communication with a first enclosure containing a pressurized fluid, the second orifice of said pair of orifice
  • the object of the invention is completely distinct from the search for a solution to these problems of maintaining initial operating characteristics in service: it is, with or without distribution counter-windows, to allow the realization of a mechanism having the transverse dimensions (in a plane perpendicular to the axis of rotation of the rotor) as small as possible.
  • the minimum distance separating the neighboring edges of two successive orifices of the dispensing glass had to be greater than the corresponding dimension of the orifice (of a cylinder) capable of being placed between the two said orifices of distribution glass.
  • the invention by proposing the adoption of a particular arrangement, allows a reduction in the value of this minimum distance and therefore allows the realization of more compact mechanisms than those previously known.
  • the shapes of the cylinder orifices are complementary to those of the first and second orifices of the dispensing glass, the area of a cylinder orifice being substantially equal to that of the delimited space, on the one hand, between the two said circles and, on the other hand, between the first and second orifices of a pair of orifices of the dispensing glass, with the operating clearance close to allowing said succession, for a cylinder orifice , communicating with a first port of a pair of ports of the dispensing window, isolating from the first and second ports of said pair of ports, and communicating with said second port of the pair of distribution glass holes.
  • this relates to a mechanism, motor or pump, constituted by a cylinder block comprising a face for communication with the outside, a plurality of cylinders, which are formed in the bloccylindres, and inside each of which slides a piston, each cylinder being connected to said communication face of the bloccylindres by at least one cylinder duct which opens into this communication face by a cylinder orifice, a cam relative to which the cylinder block is rotatably mounted about an axis of rotation on the surface of which the pistons are capable of being supported and which comprises a plurality of ramps succeeding each other in pairs of ramps, a dispensing glass which is maintained integral in rotation with the cam, which has a communication face and which comprises as many pairs of orifices opening into its communication face as there are pairs of ramps, the first orifice of a pair of orifices being capable of being placed in communication with a first enclosure containing a pressurized fluid, the second orifice of
  • the shapes of the cylinder transit orifices are complementary to those of the first and second transit orifices of the distribution glass, the area of a cylinder transit orifice being substantially equal to that of the space delimited, on the one hand, between the two so-called circles and, on the other hand, between the first and second transit orifices of a pair of transit orifices for distributing ice, apart from the clearance of operation allowing said succession, for a cylinder transit orifice, of the communi cation with a first transit port of the distribution glass, isolation from the first and second transit ports of a pair of transit ports of the distribution glass, and communication with the second port transit of said pair of transit orifices for distributing ice.
  • the main advantage which is obtained by adoption of the provisions in accordance with the invention resides in the possibility of arranging the centers of the orifices of cylinders on a circle of radius smaller than those of the corresponding circles of the previously known mechanisms and, consequently, of being able realize more compact, lighter and less expensive mechanisms.
  • the invention applies, in particular, to hydraulic mechanisms, such as those described in FR-A-2 504 987 and FR-A-2 533 965.
  • FIGS. 1 to 20 Each of the embodiments described and represented in FIGS. 1 to 20 is that of a hydraulic motor constituted by - a casing 1, in two parts; - an intermediate ring 2, disposed between the two parts of the casing 1, assembled to these two parts by means of screws 3 and supporting a wavy cam 4, each corrugation of the cam comprising two ramps corresponding one to the admission of the fluid in the engine, the other in its exhaust out of the engine; - An output shaft 5 of the motor, mounted for rotation relative to the casing 1 by means of tapered roller bearings 6, rotatable around a geometric axis 7 and provided with splines 8; - A cylinder block 9 provided with splines 10 corresponding to the splines 8 of the shaft 5 and integral in rotation with these splines 8, said cylinder block 9 thus being rotatably mounted relative to the housing 1 around the geometric axis 7; - Cylinders 11 formed in the cylinder block 9 and arranged radially relative to the geometric axis 7;
  • the flat face 18 of the dispensing glass 17 bears on the flat face 16 of the cylinder block 9.
  • All the orifices 33 on the face 16 are circular and identical, and are centered on the same circle of axis 7, therefore tangent to two concentric circles 34 (outer circle) and 35 (inner circle), being also, angularly, regularly spaced.
  • the orifices 23 and 24 on the face 18 of the distribution glass 17 are also angularly regularly spaced and shaped as lunars tangent to two concentric circles of axis 7, exterior 34 a and interior 35 a , of equal radii to those in circles 34 and 35, respectively.
  • Any lunula 23 is spaced from the next 24 and so on, so as to leave between two successive lunules a surface slightly greater than that corresponding to an orifice 33 on the face 16, so that during the rotation of the block -cylinders 9, with respect to the distribution glass 17, each orifice 33 of the face 16 of the cylinder block, successively, either first in complete communication only with an orifice 23 of the face 18 of the distribution glass, then , disposed between an orifice 23 and the following orifice 24, either then isolated from both of these two orifices 23 and 24 and, finally, either in complete communication only with said orifice 24, and so on.
  • the orifices 33 are circular, the orifices 23 and 24 having the shape of lunules
  • the inventive idea is to ensure that the shapes of the orifices 23 and 24, d on the one hand, orifices 33, on the other hand, are complementary so that an orifice 33 disposed between an orifice 23 and an orifice 24 can be isolated simultaneously from one and the other of these two orifices, all by filling as much as possible the space between the circles 34 and 35 (or 34 a and 35 a ) and the two said orifices 23, 24, to the nearest clearance allowing satisfactory hydraulic switching of the communication of an orifice 33 with a orifice 23, then of the isolation of the orifice 33 from the two said orifices 23 and 24, then finally of the communication of this orifice 33 with the orifice 24.
  • Figures 5, 6 and 7 show precisely an alternative embodiment in which the flat face 18 of the dispensing glass 17 is also in direct contact with the flat face 16 of the cylinder block 9, the orifices 23, 24 of the glass 18 having the circular shape, and the orifices 33 of the face 16 having the shape of lunules, complementary to the circular shapes of said orifices 23, 24, as has just been explained above.
  • the circular shape of a hole is often related to the method of obtaining this hole by drilling.
  • the shape of a lunule hole is less usual and is often, as regards the holes made in a solid part, obtained by molding in foundry.
  • the distribution counter-glass 36 integral in rotation with the distribution glass 17, is provided.
  • the distribution glass 17 and the counter glass 36 are secured in rotation to the casing 1 by a securing means 25 similar to that shown in FR-A-2 533 965.
  • the faces 16 and 18 of 9 and 17, respectively, are planes, perpendicular to the axis 7, and the counter-glass 36 is a thin piece (3 mm for example), also delimited by two plane faces 37, 38, perpendicular to the axis 7.
  • the planar face 37 is resting on the flat face 16 of the cylinder block 9 with respect to which it is capable of sliding; the flat face 38 is supported on the flat face 18 of the distribution glass 17.
  • the distribution counter-glass 36 has through holes 39, 40 of constant sections, in the form of lunules, and which correspond to the holes 23, 24 distribution glass 17, superimposed on said holes 23, 24, without completely covering them (see FIG. 11). Furthermore, the shape of these holes 39, 40 is complementary to that of the holes 33 of the face 16 of the cylinder block 9, the qualifier "complementary" having the same meaning as that specified above with reference to FIGS. 3 and 4
  • the holes 39, 40 are contained between two circles 34 b , 35 b centered on the axis 7, of the same radius as the circles 34, 35, respectively.
  • FIGS. 12 to 15 A variant of the embodiment of FIGS. 8 to 11 is shown in FIGS. 12 to 15.
  • a distribution counter-glass 43 is made integral in rotation with the cylinder block 9, by means of screws 41, the glass of distribution remaining integral in rotation with the casing 1 by the securing means 25. It is a thin piece (of the order of 3 mm), delimited by two plane faces 44, 45 perpendicular to the axis 7, which are resting on the faces 16 of the cylinder block 9 and 18 of the distribution glass 17, respectively.
  • This distribution counter-glass 43 has through holes 42 in a number equal to that of the orifices 33 of the cylinder block 9. The holes 42 correspond to the orifices 33, are superposed thereon, without covering them entirely (see FIG.
  • FIGS. 16 to 21 represents the solutions of the embodiments of FIGS. 8 to 11, on the one hand, and of FIGS. 12 to 15, on the other hand, by adopting two distribution counter-windows: a counter-window 36, similar to that of FIG. 10, integral in rotation (25) with the distribution glass 17, and a counter-glass 43 integral in rotation (41) with the cylinder block 9.
  • These counter-windows have the characteristics defined above. The only difference is the support of the planar face 37 of the counter-ice 36 on the planar face 45 of the counter-ice 43.
  • the through holes 39, 40 of the counter-ice 36 and 42 of the counter-ice 43 are also shaped into substantially trapezoidal lunules of "complementary" shapes (see FIG. 19).
  • the flat face 44 of the counter-glass 43 (integral in rotation (41) with the cylinder block 9) is in abutment on the flat face 16 of this cylinder block, the holes 42 of this counter-glass 43 being superimposed on the circular holes 33 of the cylinder block 9, without covering them entirely (FIG. 17);
  • the flat face 38 of the counter-glass 36 (integral in rotation (25) with the distribution glass 17) is in abutment on the flat face 18 of this distribution glass 17, the holes 39, 40 of this counter-glass 36 being superimposed on the circular orifices 23, 24 of the dispensing glass 17, without completely covering them (FIG.
  • the counter-windows 36 and 43 are pieces of small thicknesses which make it possible to obtain the through holes which they comprise in a simple and inexpensive manner, even when the shapes of these holes are not trivial ( lunules with two concavities, or substantially trapezoidal): laser cutting, or stamping, are suitable for this machining.
  • the various faces in contact are planar and perpendicular to the axis 7: face 16 of the cylinder block 9; faces 37 and 38 of the counter-ice 36; faces 44 and 45 of the counter-ice 43; and face 18 of the dispensing glass 17.
  • This characteristic is a necessity with regard to the faces capable of sliding (by rotation) relative to one another, such as: - The faces 16 and 18 of the embodiment of Figures 1 to 4, and of the embodiment of Figures 5 to 7; - The faces 16 and 37 of the embodiment of Figures 8 to 11 and the faces 45 and 18 of the embodiment of Figures 12 to 15; - the faces 37 and 45 of the embodiment of FIGS. 16 to 21.
  • FIGS. 12 to 15 and of FIGS. 16 to 21 may alternatively have any shape, but complementary to each other to achieve a sealed support, the following faces fixed relative to each other: - Faces 38 of the counter-glass 36 and 18 of the distribution glass 17 of the embodiments of FIGS. 8 to 11 and of FIGS. 16 to 21; - faces 44 of the counter-glass 43 and 16 of the cylinder block 9 of the embodiments of FIGS. 12 to 15 and of FIGS. 16 to 21.
  • the "complementarity" of the shapes of the orifices capable of being successively placed in communication with one another, then isolated from one another, such as the orifices 33 of the cylinder block and the orifices 23, 24 of the dispensing glass 17 of the embodiment of FIGS. 1 to 4, allows, with circles 34, 35 of determined diameters, to have between these two circles more orifices 23, 24 in the form of lunules with narrowed central parts, than if these orifices 23, 24 were of circular shapes, of course with the same sections as these lunules in order to be able to convey the same flow in the two configurations.
  • the diameters of the circles 34, 35 are, in the provisions adopting orifices in the form of lunules, smaller than when these orifices are circular.
  • the mechanisms according to the invention can be more compact, therefore lighter and less costly, than those known previously.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
EP19860402228 1985-09-20 1986-10-08 Flüssigkeitsmechanismus mit Fluidverteilscheibe und Gegenscheibe Expired - Lifetime EP0263218B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8513968A FR2587761B1 (fr) 1985-09-20 1985-09-20 Mecanisme hydraulique comportant des glace et contre-glace de distribution du fluide
DE8686402228T DE3668038D1 (de) 1986-10-08 1986-10-08 Fluessigkeitsmechanismus mit fluidverteilscheibe und gegenscheibe.
EP19860402228 EP0263218B1 (de) 1986-10-08 1986-10-08 Flüssigkeitsmechanismus mit Fluidverteilscheibe und Gegenscheibe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19860402228 EP0263218B1 (de) 1986-10-08 1986-10-08 Flüssigkeitsmechanismus mit Fluidverteilscheibe und Gegenscheibe

Publications (2)

Publication Number Publication Date
EP0263218A1 true EP0263218A1 (de) 1988-04-13
EP0263218B1 EP0263218B1 (de) 1990-01-03

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EP19860402228 Expired - Lifetime EP0263218B1 (de) 1985-09-20 1986-10-08 Flüssigkeitsmechanismus mit Fluidverteilscheibe und Gegenscheibe

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EP (1) EP0263218B1 (de)
DE (1) DE3668038D1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538637A1 (de) * 1991-10-19 1993-04-28 Robert Bosch Gmbh Radialkolbenmaschine
US5261318A (en) * 1991-08-01 1993-11-16 Poclain Hydraulics Pressure fluid mechanism provided with special balancing enclosures
DE4337508A1 (de) * 1993-11-03 1995-05-04 Rexroth Mannesmann Gmbh Radialkolbenmotor als Einschubmotor
WO2001077495A1 (de) * 2000-04-11 2001-10-18 Mannesmann Rexroth Ag Radialkolbenmaschine
JP4873815B2 (ja) * 2000-04-11 2012-02-08 ボッシュ レックスロート アクチエンゲゼルシャフト 放射状ピストン装置
CN105593519A (zh) * 2013-09-25 2016-05-18 V·拉比 用于液压泵分配器的密封环

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504987A1 (fr) * 1981-05-04 1982-11-05 Poclain Hydraulics Sa Mecanisme a fluide sous pression comportant des galets de reaction portes par des pistons
FR2533965A1 (fr) * 1982-09-30 1984-04-06 Poclain Hydraulics Sa Mecanisme a fluide sous pression, moteur ou pompe
FR2587761A1 (fr) * 1985-09-20 1987-03-27 Poclain Hydraulics Sa Mecanisme hydraulique comportant des glace et contre-glace de distribution du fluide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504987A1 (fr) * 1981-05-04 1982-11-05 Poclain Hydraulics Sa Mecanisme a fluide sous pression comportant des galets de reaction portes par des pistons
FR2533965A1 (fr) * 1982-09-30 1984-04-06 Poclain Hydraulics Sa Mecanisme a fluide sous pression, moteur ou pompe
FR2587761A1 (fr) * 1985-09-20 1987-03-27 Poclain Hydraulics Sa Mecanisme hydraulique comportant des glace et contre-glace de distribution du fluide

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261318A (en) * 1991-08-01 1993-11-16 Poclain Hydraulics Pressure fluid mechanism provided with special balancing enclosures
EP0538637A1 (de) * 1991-10-19 1993-04-28 Robert Bosch Gmbh Radialkolbenmaschine
DE4337508A1 (de) * 1993-11-03 1995-05-04 Rexroth Mannesmann Gmbh Radialkolbenmotor als Einschubmotor
WO2001077495A1 (de) * 2000-04-11 2001-10-18 Mannesmann Rexroth Ag Radialkolbenmaschine
JP4873815B2 (ja) * 2000-04-11 2012-02-08 ボッシュ レックスロート アクチエンゲゼルシャフト 放射状ピストン装置
CN105593519A (zh) * 2013-09-25 2016-05-18 V·拉比 用于液压泵分配器的密封环
KR20160058901A (ko) * 2013-09-25 2016-05-25 비아니 라비 유압 펌프 분배기를 위한 밀봉 링
CN105593519B (zh) * 2013-09-25 2017-10-24 V·拉比 用于液压泵分配器的密封环

Also Published As

Publication number Publication date
DE3668038D1 (de) 1990-02-08
EP0263218B1 (de) 1990-01-03

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