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EP3201466B1 - Hydraulischer mechanismus mit vorrichtung zur kolbenführung in translationsbewegung - Google Patents

Hydraulischer mechanismus mit vorrichtung zur kolbenführung in translationsbewegung Download PDF

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Publication number
EP3201466B1
EP3201466B1 EP15788134.3A EP15788134A EP3201466B1 EP 3201466 B1 EP3201466 B1 EP 3201466B1 EP 15788134 A EP15788134 A EP 15788134A EP 3201466 B1 EP3201466 B1 EP 3201466B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
projection
groove
roller
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.)
Active
Application number
EP15788134.3A
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English (en)
French (fr)
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EP3201466A1 (de
Inventor
Yann PRAT
Marc PRECIGOUT
Gilbert Goldbaum
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 Industrie
Original Assignee
Poclain Hydraulics Industrie
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.)
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Publication of EP3201466A1 publication Critical patent/EP3201466A1/de
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Publication of EP3201466B1 publication Critical patent/EP3201466B1/de
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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
    • F04B1/0439—Supporting or guiding means for the pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/047—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/22—Reciprocating-piston liquid engines with movable cylinders or cylinder
    • F03C1/223—Reciprocating-piston liquid engines with movable cylinders or cylinder having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the inner ends of the cylinders
    • 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
    • F04B1/047—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
    • 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
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • 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
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • 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
    • F04B1/20—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 rotary cylinder block
    • 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
    • F04B5/00—Machines or pumps with differential-surface pistons
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections

Definitions

  • the present description relates to the field of hydraulic machines with radial pistons, and more precisely the means for guiding in translation of the pistons of such hydraulic machines.
  • Hydraulic machines comprising a cylinder block having a plurality of housings in which pistons slide comprising means for guiding the pistons in translation in their housings.
  • the document FR 2,727,471 in the name of the applicant presents a structure of a hydraulic machine in which the pistons are guided in translation by a U-shaped clip, inserted on the one hand in a recess of the cylinder block, and on the other hand in a radial groove arranged on a wedging piece ensuring the maintenance of the piston roller.
  • the document GB 2,250,784 describes a radial piston engine in which the pistons are stages.
  • the documents FR 2 943 391 and US 6,443,047 describe for their part hydraulic machines whose pistons are provided with guide means.
  • the present invention relates to a hydraulic mechanism according to claim 1 appended.
  • the present presentation relates to a hydraulic mechanism, motor or pump, comprising a cam; a cylinder block rotatably mounted relative to the cam; at least one cylinder formed in this cylinder block; at least one piston assembly able to cooperate with a cylinder, this piston assembly comprising a piston mounted to slide inside said cylinder; a roller rotatably mounted on the piston and configured to cooperate with the cam, the roller being delimited by two transverse end faces; first and second wedging pieces each disposed between an end face of the roller and the internal face of the cylinder on which said wedging piece is supported so as to maintain the axial position of the roller.
  • the cylinder has a groove formed in its internal face, and the piston assembly has a projection configured to cooperate with the groove of the cylinder so as to maintain the orientation of the roller.
  • the translational guidance is more robust: it is able in particular to withstand power surges from the hydraulic mechanism and the sudden movements of the piston that the latter can cause.
  • the guidance is done here within the cylinder itself thanks to the cooperation of the projection of the piston assembly with the groove of the cylinder.
  • this projection can be shorter and this cooperation can be done more closely the axis of the piston, which reduces the lever arm and therefore the importance of shear forces when the piston seeks to rotate in the cylinder.
  • the projection can be an integral part of an existing part of the piston assembly, which reduces the number of parts used.
  • the projection is integral with the piston. The guiding of the piston in translation and its locking in rotation is therefore ensured directly.
  • the projection is an end portion of a pin inserted into a bore of the piston.
  • a pin inserted into a bore of the piston.
  • This pin can be fixed in the bore, for example by tight fitting, or slide freely in the bore.
  • the pin is metallic.
  • the projection is a protrusion forming an integral part of the piston.
  • a single piece can be obtained by removing material from a precursor piece to form this protuberance; it can also be obtained by molding or other techniques.
  • the projection extends in a direction which does not intersect the main axis of the piston. In this way, the projection does not interfere with a possible member extending along the main axis of the piston, such as a center hole for example.
  • the piston has a center hole, extending along its main axis from its underside, and a bore for receiving a projection pin, the center hole and the bore not communicating with the within the piston.
  • the lateral surface of the piston has a flat, the projection projecting from this flat.
  • a flat makes it easier to set up the projection: when the projection is a pin inserted in a bore of the piston, the bore is easier to pierce on the flat surface of the flat; when the projection is a protuberance of the piston produced by removal of material, this flat may be the surface remaining following the removal of material.
  • such flat allows the passage of hydraulic fluid along this portion of the piston, which is particularly useful in the case of a stepped piston.
  • the projection is offset towards a lateral edge of the flat relative to the center of said flat. This makes it possible to reduce the length of the projection, the distance separating the flat part of the piston and the internal face of the cylinder being all the smaller the closer one gets to the lateral edges of the flat part.
  • the projection is a pin
  • the projection is integral with the first wedging piece.
  • the piston can be left intact, the function of guiding in translation and locking in rotation being integrated with the function of wedging in the wedging piece. It is thus possible to use existing pistons in new cylinder blocks according to the invention by equipping them with this type of wedging piece.
  • the projection is a boss forming an integral part of the first wedging piece.
  • the wedging piece can thus be obtained in one piece, by molding for example. This gives a more massive and therefore more solid part.
  • the first wedging piece is plastic.
  • the groove extends to the outer end of said cylinder and opens in the outer face of the cylinder block.
  • the projection can therefore possibly leave the groove for a short time when the piston follows the cam: in this way, the piston is not locked in translation, which offers a large amplitude to the piston and therefore improves performance of the hydraulic mechanism.
  • said cylinder comprises an outer section, having a first diameter, defining an outer chamber, and an inner section, having a second diameter smaller than the first diameter, defining an inner chamber;
  • the piston has an outer portion, having a first diameter, and an inner portion, having a second diameter less than the first diameter;
  • the groove is formed in the interior section of the cylinder and the projection projects on the interior portion of the piston.
  • the groove extends to the outer end of the inner section of the cylinder and opens into the outer chamber of the cylinder. This facilitates the mounting of the stepped piston and increases the cross-section of the hydraulic fluid.
  • the projection extends perpendicular to the axis of the piston.
  • the projection has a tapered inner end.
  • tapeered means a shape which tapers towards its end; this end being for example frustoconical with possibly a rounded tip. This shape can be assessed in a radial plane (orthogonal to the main axis of the mechanism) and / or in the axial plane (containing the main axis of the mechanism and the axis of the piston). This allows, in cases where the projection can come out of the groove, to facilitate its reinsertion into the groove and to automatically re-center the piston. The assembly of the mechanism is also facilitated.
  • the projection height of the projection decreases towards its inner end.
  • projection height means the height of an element, at a given point, measured from the surface on which this element projects and perpendicular to this surface. This also makes it easier to insert the projection into the groove and prevent it from catching on the edge of the cylinder.
  • the hydraulic mechanism is devoid of any fixing element mounted in an external or lateral face of the cylinder block and overlapping the periphery of a cylinder.
  • the manufacture of the cylinder block is thus facilitated and the risk of stalling and loss of an element in the casing of the mechanism is reduced.
  • the groove of the cylinder is made in the thickness of the cylinder block.
  • the groove extends in a direction parallel to the axis of the cylinder.
  • the piston is provided with a seal ensuring the seal between the piston and the internal face of the cylinder.
  • the groove of the cylinder is provided so that it is never overlapped by the piston seal when the piston is guided by the cam. This prevents hydraulic fluid from escaping from the piston chamber bypassing the seal through the groove.
  • a cylindrical roller 23 is housed in a bearing 24 formed at the end of each piston 11, is rotatably mounted around a roller axis 25 orthogonal to the piston axis 26, coincident with the cylinder axis 10, and is supported on the cam 3.
  • This roller 23 is capable of penetrating at least partially inside the cylinder, so that, on the side of each transverse face 27 delimiting the roller, a recess 28 is formed in the part of the piston 11 which supports this roller, which makes it possible to form, on either side of said roller, spaces.
  • Each recess corresponds at least to the space between at least the surface of the cylinder 10, the cylindrical surface of the roller 23 and the corresponding transverse face 27 of the roller, said space being moreover open to the external part of the piston, at least in the area where the roller is arranged protruding from the piston.
  • the plane perpendicular to the axis 25 of the roller 23 and containing the axis 26 of the piston is a plane of symmetry for the piston 11, the bearing 24, the roller 23, and the two spaces. It would also be possible, and in accordance with the description, to have an asymmetrical arrangement in which the spaces are not symmetrical to each other with respect to a plane perpendicular to the axis 25 of the roller.
  • each space delimited between a recess 28 of the piston 11 and the internal wall of the cylinder 10 contains a wedging piece 29a, 29b, of shape corresponding to that of the recess and of cross section substantially shaped as a lunula.
  • These wedging pieces 29a, 29b each have a flat face arranged opposite one of the end faces 27 of the roller 23 and a cylindrical face bearing on the internal face of the cylinder 10. These pieces therefore perform the axial wedging of the roller each of which transverse face 27 is in contact with the opposite face of the part 29a, 29b.
  • the internal wall of the cylinder 10 has a groove 31 extending radially inwards from the external edge of the cylinder 10 in the axial plane containing the axis 26 of the piston 11 and the axis 25 of the roller 23: this groove 31 therefore opens within one of the recesses 28.
  • the groove 31 extends over a length such that the seal 11 ′ of the piston 11 never reaches it when the piston moves back and forth in the cylinder 10, guided by cam 3; in other words, the position of the seal at the top dead center of the piston is more inside than the inside end 32 of the groove 31.
  • the length of the groove 31 can be less than half, or a third, of the length of the cylinder 10, depending on the length of the piston 11 stroke.
  • the groove 31 has a tapered shape. More precisely, it has the shape of a truncated cone cut in a longitudinal plane with a rounded inner end 32: thus, both its tangential dimension and its axial dimension decrease when one approaches its inner end 32.
  • the wedging piece 29a intended to fill the recess 28 in which the groove 31 is provided comprises for its part a boss 35 of shape substantially complementary to the groove 31.
  • This boss 35 therefore extends radially inwards from the outer edge of the wedging piece 29a over a length substantially identical, or shorter, than that of the groove 31.
  • It also has a tapered shape, more precisely the shape a truncated cone cut in a longitudinal plane with a rounded inner end 36; the angle of the cone can for example be around 5 °.
  • such a boss 35 is therefore configured to engage in the groove 31 of the cylinder 10 in order to block the roller 25 and therefore the piston 11 in its entirety in rotation about its axis 26.
  • the inner end 36 of the boss 35 rests at the inner end 32 of the groove 31; on the other hand, at top dead center, the inner end 36 of the boss 35 projects beyond the outer edge of the cylinder 10 and therefore leaves the groove 31.
  • the cylinder 10 has a single groove 31 and only the first wedging piece 29a is provided with such a boss 35.
  • two diametrically opposite grooves 31 can be provided in the cylinder 10; in this case, the second wedging piece 29b can also be provided with a boss 35.
  • FIG 5 to 7 illustrate a second example of a hydraulic mechanism generally analogous to the first example except that the cylinder block 108 here comprises stepped cylinders 110 configured to receive stepped pistons 111.
  • stepped cylinders 110 comprise an outer section 110e, of a certain diameter, defining an outer chamber, and an inner section 110i, having a smaller diameter, defining an inner chamber.
  • the stepped pistons 111 have an outer portion 111e, having a diameter substantially equal, to within a clearance, to the diameter of the outer section 100e of the cylinder 110, and an inner portion 111i, also called the piston foot, having a diameter at less less than the diameter of the inner section 110i of the cylinder 110.
  • the cylinder is sealed by a seal provided at the level of the outer portion 111e of the piston which is applied against the surface of the outer section 110e of the cylinder 110.
  • the hydraulic fluid can thus be distributed in the inner chamber bypassing the inner portion 111i of the piston to apply its hydraulic pressure both against the inner surface of the outer portion 111e of the piston 111 and against the inner surface of its inner portion 111i.
  • the outer portion 111e of the piston also supports, in a similar manner to the previous example, a roller 123 and wedging pieces 129.
  • the inner portion 111i has two diametrically opposite flats 137, preferably arranged orthogonally to the axis 5 of the engine.
  • a bore 138 is further pierced in the flat 137 opposite the fluid supply conduit 113.
  • a metal pin 135 is inserted and retained in this bore 138 so that its distal end 136 projects orthogonally from the flat 137.
  • This distal end 136 of the pin 135 is thus configured to engage in a groove 131 formed in the surface of the inner section 110i of the cylinder 110.
  • This groove 131 thus extends radially inward from the outer edge of the inner section 110i of the cylinder 110 over substantially the entire length of this interior section 110i. It therefore opens all along the inner chamber and opens at its outer end into the outer chamber of the cylinder 110.
  • This groove preferably extends in the axial plane containing the axis 26 of the piston 11 and the axis 25 roller 23, opposite the fluid supply conduit 113.
  • FIG 8 and 9 illustrate an alternative embodiment of this second example in which the pin 235 is no longer centered on the flat 237 but offset towards a lateral edge 237a of the flat 237.
  • the piston 211 has a center hole 239, allowing its machining, extending along its main axis 226 and that the latter is disconnected from, that is to say does not communicate with, the bore 238 in which the pin 235 is inserted.
  • the groove position 231 is also modified in order to cooperate properly with the pin 235.
  • the groove 231 s' extends in a direction offset from the axial plane of the engine passing through this piston.
  • the length of the groove 131 is such that the pin can never come out of the groove during the operation of the engine 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Actuator (AREA)

Claims (9)

  1. Hydraulikmechanismus in Form eines Motors oder einer Pumpe, umfassend
    einen Nocken (3),
    einen Zylinderblock (108), der in Bezug auf den Nocken (3) drehbar montiert ist,
    wenigstens einen Zylinder (110), der in dem Zylinderblock (108) angebracht ist und ein äußeres Teilstück (110e), das einen ersten Durchmesser aufweist und eine äußere Kammer definiert, und ein inneres Teilstück (110i) beinhaltet, das einen zweiten Durchmesser, der kleiner ist als der erste Durchmesser, aufweist und eine innere Kammer definiert,
    wenigstens eine Kolbenanordnung, die dazu geeignet ist, mit einem Zylinder (110) zusammenzuwirken, wobei diese Kolbenanordnung umfasst
    - einen Kolben (111), der gleitend innerhalb des Zylinders (110) montiert ist und eine äußere Sektion (111e), die einen ersten Durchmesser aufweist, und eine innere Sektion (111i) beinhaltet, die einen zweiten Durchmesser aufweist, der kleiner ist als der erste Durchmesser, und
    - eine Rolle (123), die drehbar auf dem Kolben (111) montiert und dazu ausgestaltet ist, mit dem Nocken (3) zusammenzuwirken, wobei die Rolle (123) durch zwei querliegende Endflächen (27) begrenzt wird,
    wobei das innere Teilstück des Zylinders (110) eine Nut (131) beinhaltet, die in seine innere Fläche eingearbeitet ist,
    dadurch gekennzeichnet, dass er ferner erste und zweite Packstücke (129) umfasst, die jeweils zwischen einer Endfläche (27) der Rolle (123) und der inneren Fläche des Zylinders (110), auf welcher sich das Packstück (129) abstützt, angeordnet sind, um die axiale Position der Rolle (123) zu halten, und
    dass die Kolbenanordnung einen Fortsatz (135) beinhaltet, der von der inneren Sektion (111i) des Kolbens (111) wegragt und dazu ausgestaltet ist, mit der Nut (131) des Zylinders (110) auf eine Weise zusammenzuwirken, um die Orientierung der Rolle (123) zu halten.
  2. Mechanismus nach Anspruch 1, wobei der Fortsatz ein Endabschnitt (136) eines Zapfens (135) ist, der in eine Bohrung (138) des Kolbens (111) eingesetzt ist.
  3. Mechanismus nach Anspruch 1, wobei der Fortsatz eine Ausstülpung ist, die ein integraler Teil des Kolbens ist.
  4. Mechanismus nach einem der Ansprüche 1 bis 3, wobei der Fortsatz (235) sich entlang einer Richtung erstreckt, welche die Hauptachse (226) des Kolbens (211) nicht schneidet.
  5. Mechanismus nach einem der Ansprüche 1 bis 4, wobei die seitliche Oberfläche des Kolbens (111) eine Abflachung (137) aufweist und der Fortsatz (136) von dieser Abflachung (137) wegragt.
  6. Mechanismus nach Anspruch 5, wobei der Fortsatz (235) in Bezug auf das Zentrum der Abflachung zu einem seitlichen Rand (237a) der Abflachung (237) hin versetzt ist.
  7. Mechanismus nach einem der Ansprüche 1 bis 6, wobei die Nut (131) sich bis zu dem äußeren Ende des inneren Teilstücks (110i) des Zylinders (110) erstreckt und in die äußere Kammer des Zylinders (110) mündet.
  8. Mechanismus nach einem der Ansprüche 1 bis 7, wobei der Fortsatz ein verjüngtes inneres Ende besitzt.
  9. Mechanismus nach einem der Ansprüche 1 bis 8, wobei die abstehende Höhe des Fortsatzes in Richtung seines inneren Endes abnimmt.
EP15788134.3A 2014-10-03 2015-10-02 Hydraulischer mechanismus mit vorrichtung zur kolbenführung in translationsbewegung Active EP3201466B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1459509A FR3026791B1 (fr) 2014-10-03 2014-10-03 Mecanisme hydraulique muni de moyens de guidage en translation des pistons
PCT/FR2015/052646 WO2016051107A1 (fr) 2014-10-03 2015-10-02 Mecanisme hydraulique muni de moyens de guidage en translation des pistons

Publications (2)

Publication Number Publication Date
EP3201466A1 EP3201466A1 (de) 2017-08-09
EP3201466B1 true EP3201466B1 (de) 2020-04-15

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EP15788134.3A Active EP3201466B1 (de) 2014-10-03 2015-10-02 Hydraulischer mechanismus mit vorrichtung zur kolbenführung in translationsbewegung

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EP (1) EP3201466B1 (de)
CN (1) CN106795870B (de)
FR (2) FR3026791B1 (de)
WO (1) WO2016051107A1 (de)

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FR3082243B1 (fr) * 2018-06-08 2020-08-28 Poclain Hydraulics Ind Bloc cylindres comprenant un moyen de maintien des pistons
EP4208639B1 (de) * 2020-12-16 2024-01-17 Danfoss Power Solutions (Jiangsu) Co., Ltd. Hydrostatische radialkolbeneinheit
FI130485B (en) * 2021-08-12 2023-09-29 Black Bruin Oy Radial piston hydraulic motor comprising hollow rotating shaft inside the motor
FR3143069A1 (fr) * 2022-12-09 2024-06-14 Poclain Hydraulics Industrie Machine hydraulique tournante équipée de pistons
FR3143068A1 (fr) * 2022-12-09 2024-06-14 Poclain Hydraulics Industrie Machine hydraulique comprenant un bloc-cylindres présentant des logements

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Publication number Publication date
FR3032241B1 (fr) 2019-05-24
FR3032241A1 (fr) 2016-08-05
EP3201466A1 (de) 2017-08-09
WO2016051107A1 (fr) 2016-04-07
CN106795870A (zh) 2017-05-31
CN106795870B (zh) 2019-04-02
FR3026791B1 (fr) 2019-04-19
FR3026791A1 (fr) 2016-04-08

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