EP0767864B1 - Axialkolbenmaschine mit einem kühlkreislauf für die zylinder und kolben - Google Patents
Axialkolbenmaschine mit einem kühlkreislauf für die zylinder und kolben Download PDFInfo
- Publication number
- EP0767864B1 EP0767864B1 EP95921838A EP95921838A EP0767864B1 EP 0767864 B1 EP0767864 B1 EP 0767864B1 EP 95921838 A EP95921838 A EP 95921838A EP 95921838 A EP95921838 A EP 95921838A EP 0767864 B1 EP0767864 B1 EP 0767864B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axial piston
- cooling
- piston machine
- cylinders
- machine according
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 89
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 23
- 238000005461 lubrication Methods 0.000 description 9
- 230000002706 hydrostatic effect Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 206010010904 Convulsion Diseases 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
Images
Classifications
-
- 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
- F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
- F01B3/0052—Cylinder barrel
Definitions
- the invention relates to an axial piston machine according to the preamble of Claim 1.
- Such axial piston machines are known from practice. Especially at Swashplate machines contain the piston that supports each piston on the swashplate Normal force a radial component that acts like one in the cylinder drum clamped beam acts on the piston and this within the cylinder canted. This leads in particular to the lack of piston lubrication, such as occurs during the start-up phase, for metallic contact between the piston and Cylinder wall with the result of corresponding heating by the occurring Frictional forces and risk of piston seizure.
- GB-A-1 029 910 an axial piston machine according to the preamble of Claim 1 out.
- the subject of this document is a lubrication device for hydraulic pumps and motors. Some are aligned in the radial direction Inlet and outlet channels provided to the lubricating oil for lubricating the pistons and to promote the storage of the cylinder drum. A connection between the am Outer circumference of the cylinder drum formed with the leak inside the Leakage fluid receiving space provided in the cylinder drum does not exist, so that none closed but an open lubrication circuit is present.
- the solution according to the invention is based on the principle of cooling the piston critical points of metallic contact between the piston and cylinder and can thus not only in oil-operated axial piston machines, but also in those are used, which are intended for operation with a non-lubricating fluid are.
- This cooling takes place by means of a cooling circuit which is connected to the leakage space connected, that is, completely separate from the working circuit of the axial piston machine is and in this way does not affect their efficiency.
- the leakage fluid in the Leakage has its strongest cooling effect in the start-up phase, if so Risk of piston seizure is greatest because in this phase its temperature is roughly corresponds to the ambient room temperature.
- This cooling device can be in the form of a another leakage fluid receiving space in a pressure and attached to the housing Suction channel of the connecting block containing the axial piston machine.
- the cooling areas are preferably designed as annular spaces that the cylinders with surrounded by a small radial distance.
- the cooling areas are advantageous to use as annular grooves in the cylinder walls form, so that the leak oil not only for cooling, but also for additional lubrication of the pistons.
- the arrangement and number of Annular spaces or annular grooves can depend on the respective conditions of use Axial piston machine can be matched. So it can with axial piston machines low performance, each cylinder has a single cooling area, preferably in the end region of the cylinder drum facing the lifting disk, assign.
- At least preferably an upper and a lower cooling area are provided, which are separated by a distribution channel or a distributor groove can be connected to each other.
- the Leakage oil flow through an inlet channel and into one of the cooling areas maintain a discharge channel opening out of the respective other cooling area will.
- suction channel of the axial piston machine Connect the cooling circuit via a dossel.
- the one forced over the throttle Forced flow improves the cooling properties because relatively cool oil from the Inflow channel flows.
- the axial piston machine shown in Figures 1 to 4 is in Swashplate design with adjustable displacement and one Current direction executed and includes in a known manner as essential components hollow cylindrical housing 1 with an open end (upper end in Figure 1) attached to the housing 1, the open end closing Terminal block 2, a lifting or swash plate 3, a control body 4, a Drive shaft 5, a cylinder drum 6 and a cooling circuit 7.1 according to the invention until 7.4.
- the swash plate 3 is a so-called swivel cradle with a semi-cylindrical one Cross-section (see Figure 5) formed and supported with two, with mutual Distance parallel to the swivel direction bearing surfaces under hydrostatic Relief on two appropriately shaped bearing shells 8, which on the inner surface the housing end wall 9 opposite the connection block 2 are fastened.
- the hydrostatic discharge takes place in a known manner via pressure pockets 10, which in the Bearing shells 8 are formed and supplied with pressure medium via connections 11 will.
- actuator 13 engages in the direction of Terminal block 2 extending arm 14 of the swash plate 3 and is used for Swiveling the same about a swivel axis perpendicular to the swivel direction.
- the control body 4 is on the inner surface of the housing interior facing the Terminal blocks 2 attached and with two through openings 15 in the form of kidney-shaped control slots which are connected via a pressure channel 16D or Suction channel 16S in the connection block 2 to a pressure and suction line, not shown are connected.
- the pressure channel 16D has a smaller flow cross section than the suction channel 16S.
- the spherical facing the interior of the housing Trained control surface of the control body 4 serves as a bearing surface for the Cylinder drum 6.
- the drive shaft 5 protrudes through a through hole in the housing end wall 9 in the housing 1 and is in this through hole by means of a bearing 17 and by means of a further bearing 18 in a narrower bore section blind bore 19 at the end in the connection block 2 and one closer to it Bore section adjacent region of a central through hole 20 in Control body 4 rotatably mounted.
- the drive shaft 5 penetrates inside the Housing also a central through hole 21 in the swash plate 3, whose diameter corresponds to the largest swash deflection of the swash plate 3 is dimensioned, as well as a central through bore in the cylinder drum 6 two hole sections.
- One of these bore sections is formed on a cylinder drum 6, projecting beyond the end face 22 facing the swash plate 3 sleeve-shaped extension 23, via which the cylinder drum 6 by means of a keyway connection 24 is rotatably connected to the drive shaft 5.
- the remaining bore section is conical; it tapers based on its cross section of largest diameter close to the first Bore section up to its cross section of smallest diameter close to the Control body 4 adjacent end face or bearing surface of the cylinder drum 6.
- the of the Drive shaft 5 and this conical bore section is defined annular space designated by the reference numeral 25.
- the cylinder drum 6 has generally axially extending, stepped Cylinder bores 26 which are even on a coaxial to the drive shaft axis Pitch circle are arranged on the cylinder drum end face 22 directly and on the Control body 4 facing cylinder drum bearing surface via outlet channels 27 open out in the same pitch circle as the control slots.
- a bushing 28 is used in the on the Cylinder drum end face 22 directly opening cylinder bore sections a larger diameter.
- the cylinder bores 26 including the bushings 28 are referred to here as cylinders.
- Within this Cylinders 26, 28 are displaceably arranged pistons 29 on their swash plate 3 facing ends with ball heads 30 which are mounted in sliding shoes 31 and via this to an annular slide disk 32 fastened to the swash plate 5 are stored hydrostatically.
- Each slide shoe 31 is on its slide plate 32 facing sliding surface with a pressure pocket, not shown, which over a through hole 33 in the shoe 31 to a stepped axial Through channel 34 connected in the piston 29 and in this way with the Piston 29 in the cylinder bore 26 delimited working space of the cylinder connected is.
- a stepped axial Through channel 34 connected in the piston 29 and in this way with the Piston 29 in the cylinder bore 26 delimited working space of the cylinder connected is.
- In each axial through channel 34 is in the area of the associated Ball head 30 formed a throttle.
- the one in the interior of the housing of the components 3 to 6 etc. contained therein The space taken up serves as a leakage space 37 which is used in the operation of the Axial piston machine through all gaps, such as between the Cylinders 26, 28 and the piston 29, the control body 4 and the cylinder drum 6, the swash plate 3 and the sliding plate 32 and the bearing shells 8, etc., emerging Leakage fluid picks up.
- the axial piston machine is designed for operation with oil as a fluid.
- the cylinder drum 6 together with the piston 29 is rotated. If the swash plate 3 in a by actuating the actuator 13 Inclination (see FIG. 5) is pivoted relative to the cylinder drum 6, so all pistons perform 29 strokes; when rotating the Cylinder drum 6 through 360 °, each piston 29 passes through a suction and one Compression stroke, whereby corresponding oil flows are generated, their inflow and Dissipation via the mouth channels 27, the control slots 15 and the pressure and Suction channel 16D, 16S.
- the swash plate 3 exerts a normal force F n on each slide shoe 31, which is perpendicular to the swash plate 3 with negligible friction.
- This normal force is broken down into a piston force F k and a radial or transverse force F q in the spherical piston 30.
- the transverse force F q acts in the ball head 30 on the piston 29 as on a beam clamped in the cylinder drum 6, which causes the axial reaction forces F r shown in FIG.
- the piston 29 comes into metallic contact with the liner 28, and very high surface pressures can occur, which are the cause of correspondingly high frictional forces and thus heating at the contact points.
- the cooling circuit 7.1 to 7.4 is connected to the leakage space 37 and includes the conical annulus 25 (so-called leakage fluid receiving space), the Through hole 20 in the control body 4, the blind hole 19 (so-called further Leakage fluid receiving space), a connecting this with the leakage space 37 Connection line 38, which is in a circumferential groove 39 in the inner surface of the Terminal block 2 opens out, as well as the cylinders 26, 28 all around Cooling areas connected to the conical annular space 25 via inlet channels 40 are and via drainage channels 41 on the cylindrical boundary surface 42 of the Open cylinder drum 6 into leakage space 37. All inlet channels 40 open in the conical annular space 25 at its cross-section of the largest diameter and Like all drainage channels 41, they run essentially radially through the Cylinder drum 6.
- each cylinder 26, 28 is in the form of a cooling area an annular space 43 assigned as a circumferential groove in the wall of the Cylinder bore section of larger diameter and formed by the Liner 28 is covered.
- the annular space 43 extends from near Mouth area of the cylinder bore 26 over about two thirds of the length the same in the direction of the mouth channels 27 and thus represents one of the upper Dead center position of the piston 29 associated upper cooling area.
- One each Inlet channel 40 and an outlet channel 41 open approximately centrally in the annular space 43 and run coaxially with each other.
- the heating leakage oil in the leakage space 37 is cooled as it flows through the blind bore 19 in the connection block 2, since this is exposed to the room temperature and is therefore cooler than the leakage oil in the leakage space 37.
- the leakage oil in the cooling circuit 7.1 can be kept at correspondingly low temperatures by appropriately designing the connection block 2 and the blind bore 19 and, if appropriate, additionally cooling them by means of a separate coolant.
- the cooling circuit 7.1 serves only as a cooling circuit due to the lack of connection to the cylinders 26, 28 (due to the closed annular spaces 43).
- the cooling circuit 7.1 can additionally assume a lubricating function if, for example, the annular spaces 43 are connected to the cylinders 26, 28 via corresponding bores through the bushings 28.
- the axial piston machine equipped with the cooling circuit 7.1 is designed for medium outputs due to the arrangement of the annular spaces 43 in the mouth area of the cylinders 26, 28.
- the cooling circuit 7.2 according to FIG. 2 differs in otherwise the same Construction and cooling function of that of Figure 1 in that its Cooling areas have the shape of annular grooves 44 which are in the bushings 28 formed and open to the interior of the cylinders 26, 28.
- the one with the Cooling circuit 7.2 equipped axial piston machine is due to the compared to the annular spaces 43 smaller axial width of the annular grooves 44 for smaller Services designed and performed as the axial piston machine according to Figure 1 at the same time additional lubrication of the pistons 29.
- the cooling circuit 7.3 according to FIG. 3 differs in otherwise the same Construction and function of that of Figure 2 in that each Annular groove 44 is connected to a distributor groove 45 which is in the bushing 28 spirally surrounding, is formed and on the end face 22 of the cylinder drum 6 flows out.
- the area of action of the ring grooves 44 with regard to cooling and Lubrication is made from them via the distributor grooves 45 into the leakage space 37 flowing leakage oil up to the mouth of the cylinders 26, 28 expanded.
- the cooling circuit 7.4 according to FIG. 4 comprises the one in FIG. 1 for each cylinder 26, 28 shown upper annular space 43, but with a smaller axial width, and one another, lower annular space 46 of the same dimensions, which in the lower end region of the Liner 28, that is in the region of the cylinder 26, 28 above the Piston base 47 is formed at the bottom dead center position of the piston 29.
- To the upper annular space 43 is an inlet channel 40 and to the lower annular space 46 Drain channel 41 connected.
- a Distribution channel 48 is provided, which connects the two annular spaces 43, 46 together.
- the cooling circuit 7.4 according to FIG. 4 like that according to FIG. 1, is not shown in FIG Connection with the cylinders 26, 28 and thus has only the function of a Cooling.
- the cooling circuit 7.4 is very high performance for axial piston machines intended.
- This cooling circuit can be used for high performance axial piston machines Find use when the annular spaces 43, 46 and possibly the Distribution channel 48 through corresponding holes through the bushings 28 with the Cylinders 26, 28 are connected. The same effect is achieved if the Annuli 43, 46, the distribution channel 48 and the holes mentioned Ring grooves and distributor grooves according to Figure 3 are replaced.
- FIG. 6 shows the cooling circuit 7.1 already shown in FIG. 1.
- the embodiment shown in Figure 6 differs from that Figure 1 in that between the suction channel 16S and the blind bore 19 a Through bore 51 is provided, the suction channel 16S of the axial piston machine connects to the cooling circuit 7.1.
- the bore 51 is an anti-pulsation throttle 50 arranged in the bore 51. This flows under pre-compression via the anti-pulsation throttle 50 standing fluid of the suction channel 16S in the cooling circuit 7.1, causing leakage be balanced. The fluid flowing in via the throttle 50 causes a certain forced flow in the cooling circuit 7.1 reached, whereby the cooling properties of the cooling circuit can be improved.
- the inflow from the suction channel 16S can at various points in the Axial piston machine can be arranged and in different areas of the cooling circuit flow into.
- the arrangement of the throttle 50 in the is particularly advantageous Terminal block 2, where it between the blind bore 19 and the suction channel 16S in can be easily integrated.
- the invention can also be implemented in inclined axis machines, since here too radial forces that jam the pistons in the cylinders can occur due to an inclined position of the pistons or piston rods as a result of Deviations between the part circle of the spherical seats in the Drive pulley and the pitch circle of the cylinder.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
- Figur 1
- als erstes Ausführungsbeispiel eine Axialkolbenmaschine im Axialschnitt mit einem Kühlkreislauf zur Kühlung der Zylinder und Kolben in einer ersten Ausgestaltung;
- Figur 2
- als zweites Ausführungsbeispiel die Axialkolbenmaschine nach Figur 1 im Axialschnitt mit einem Kühlkreislauf in einer zweiten Ausgestaltung;
- Figur 3
- als drittes Ausführungsbeispiel die Axialkolbenmaschine nach Figur 1 im Axialschnitt mit einem Kühlkreislauf in einer dritten Ausgestaltung;
- Figur 4
- als viertes Ausführungsbeispiel die Axialkolbenmaschine nach Figur 1 im Axialschnitt mit einem Kühlkreislauf in einer vierten Ausgestaltung;
- Figur 5
- einen Axialschnitt in schematischer Darstellung entlang der Linie V - V in Figur 4, der die an den Kolben der Axialkolbenmaschine nach den Figuren 1 bis 4 wirkenden Kräfte zeigt;
- Figur 6
- als fünftes Ausführungsbeispiel die Axialkolbenmaschine nach Figur 1 im Axialschnitt mit einem Kühlkreislauf, der mittels einer Drossel mit dem Saugkanal verbunden ist.
Claims (15)
- Axialkolbenmaschine mit einem Gehäuse (1), dessen Gehäuse-Innenraum einen Leckraum (37) umfaßt und eine Schrägscheibe (3) sowie eine drehbar gelagerte Zylindertrommel (6) mit Zylindern (26, 28) und in diesen hin- und herbewegbaren Kolben (29) aufnimmt, deren aus den Zylindern (26, 28) herausragende Enden sich an der Schrägscheibe (3) abstützen,
wobei ein Leckfluid-Aufnahmeraum (25) in dem von den Zylindern (26, 28) umgebenen Teil der Zylindertrommel (6) ausgebildet ist und in der Zylindertrommel (6) Zulauf- und Ablaufkanäle (40, 41) ausgebildet sind, die mit wenigstens einer radialen Komponente durch die Zylindertrommel (6) verlaufen,
gekennzeichnet durcheine den Leckfluid-Aufnahmeraum (25) mit dem Leckraum (37) zur Bildung eines Kühlkreislaufs (7.1 bis 7.4) verbindende Anschlußleitung (38),den Zylindern (26, 28) zu deren Kühlung umlaufend zugeordnete Kühlbereiche (43, 44, 46), die über die zum Kühlkreislauf (7.1 bis 7.4) gehörenden Zulaufkanäle (40) an den Leckfluid-Aufnahmeraum (25) angeschlossen sind und über die zum Kühlkreislauf (7.1 bis 7.4) gehörenden Ablaufkanäle (41) an einer äußeren Begrenzungsfläche (42) der Zylindertrommel (6) in den Leckraum (37) ausmünden, undeine Kühleinrichtung (19) zum Kühlen des Leckfluids im Kühlkreislauf (7.1 bis7.4). - Axialkolbenmaschine nach Anspruch 1, dadurch gekennzeichnet, daß sich der Leckfluid-Aufnahmeraum (25) in Strömungsrichtung bis zum Ausmündungsbereich der Zulaufkanäle (40) zu den Kühlbereichen (43, 44, 46) in Art eines Diffusors erweitert.
- Axialkolbenmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Kühleinrichtung (19) in Form eines weiteren Leckfluid-Aufnahmeraums in einem an das Gehäuse (1) angesetzten, Druck- und Saugkanal (16D, 16S) der Axialkolbenmaschine enthaltenden Anschlußblock (2) ausgebildet ist.
- Axialkolbenmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß beide Leckfluid-Aufnahmeräume (19, 25) koaxial zueinander verlaufen und miteinander in Verbindung stehen, und daß die Zylindenrommel (6) drehfest auf einer Triebwelle (5) angeordnet ist, die zumindest den Leckfluid-Aufnahmeraurn (25) in der Zylindertrommel (6) durchsetzt.
- Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Kühlbereiche als Ringräume (43, 46) ausgebildet sind, die die Zylinder (26, 28) mit geringem radialen Abstand umgeben.
- Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Kühlbereiche als Ringnuten (44) in den Wandungen der Zylinder (26, 28) ausgebildet sind.
- Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß an jeden Kühlbereich (44) eine Verteilernut (45) bzw. ein Verteilerkanal angeschlossen ist, die bzw. der den zugeordneten Zylinder (26, 28) im wesentlichen spiralförmig umgibt und an der der Hubscheibe(3) zugewandten Stirnseite (22) der Zylindertrommel (6) ausmündet.
- Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß jedem Zylinder wenigstens ein oberer Kühlbereich (43) in dem der Hubscheibe (3) zugewandten Endbereich der Zylindertrommel (6) und/oder in deren Bereich oberhalb des Kolbenbodens (47) bei unterer Totpunktlage des Kolbens (29) ein unterer Kühlbereich (46) zugeordnet ist.
- Axialkolbenmaschine nach Anspruch 9, dadurch gekennzeichnet, daß ein weiterer Verteilerkanal (48) bzw. eine weitere Verteilernut den unteren und den oberen Kühlbereich (43, 46) miteinander verbindet.
- Axialkolbenmaschine nach Anspruch 10, dadurch gekennzeichnet, daß einem der beiden Kühlbereiche (43) wenigstens ein Zulaufkanal (40) und dem anderen Kühlbereich (46) wenigstens ein Ablaufkanal (41) zugeordnet ist.
- Axialkolbenmaschine nach wenigstens einem der Anspüche 1 bis 10, dadurch gekennzeichnet, daß jedem Kühlbereich (43, 44) wenigstens ein Zulaufkanal (40) und ein Ablaufkanal (41) zugeordnet ist.
- Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Zulaufkanäle (40) und die Ablaufkanäle (41) im wesentlichen radial verlaufen.
- Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß der Kühlkreislauf (7.1 bis 7.4) über eine Drossel (50) mit dem Saugkanal (16S) der Axialkolbenmaschine verbunden ist.
- Axialkolbenmaschine nach Anspruch 13,
dadurch gekennzeichnet, daß die Drossel (50) in einem Bereich zwischen dem Leckraum (37) und dem Leckfluid-Aufnahmeraum (25) in den Kühlkreislauf (7.1 bis 7.4) einmündet. - Axialkolbenmaschine nach Anspruch 13 oder 14,
dadurch gekennzeichnet, daß die Drossel (50) in einem an das Gehäuse (1) angesetzten, Druck- und Saugkanal (16D, 16S) der Axialkolbenmaschine enthaltenden Anschlußblock (2) ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4423023 | 1994-06-30 | ||
DE4423023A DE4423023C2 (de) | 1994-06-30 | 1994-06-30 | Axialkolbenmaschine mit einem Kühlkreislauf für die Zylinder und Kolben |
PCT/EP1995/002180 WO1996000838A1 (de) | 1994-06-30 | 1995-06-07 | Axialkolbenmaschine mit einem kühlkreislauf für die zylinder und kolben |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0767864A1 EP0767864A1 (de) | 1997-04-16 |
EP0767864B1 true EP0767864B1 (de) | 1998-08-12 |
Family
ID=6521964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95921838A Expired - Lifetime EP0767864B1 (de) | 1994-06-30 | 1995-06-07 | Axialkolbenmaschine mit einem kühlkreislauf für die zylinder und kolben |
Country Status (5)
Country | Link |
---|---|
US (1) | US5971717A (de) |
EP (1) | EP0767864B1 (de) |
JP (1) | JP3570517B2 (de) |
DE (2) | DE4423023C2 (de) |
WO (1) | WO1996000838A1 (de) |
Cited By (1)
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DE102009052608A1 (de) | 2009-11-03 | 2011-05-05 | Robert Bosch Gmbh | Axialkolbenmaschine in Schrägscheibenbauweise |
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DE19613609C2 (de) * | 1996-04-04 | 2000-02-17 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine mit internem Spülkreislauf |
DE19620167C2 (de) * | 1996-05-20 | 1998-11-12 | Brueninghaus Hydromatik Gmbh | Hohlkolben mit radial verschweißtem Deckel |
DE19648319B4 (de) * | 1996-06-18 | 2009-01-02 | Continental Teves Ag & Co. Ohg | Radialkolbenpumpe |
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EP0943798B1 (de) | 1998-03-16 | 2004-08-18 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine mit hydrostatischer Entlastung der Zylinderbohrungen |
DE19815614B4 (de) * | 1998-03-16 | 2005-09-08 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine mit hydrostatischer Entlastung der Zylinderbohrungen |
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DE102013208439A1 (de) | 2013-05-08 | 2014-11-13 | Robert Bosch Gmbh | Hohlkolben für eine hydrostatische Kolbenmaschine |
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DE102014217143A1 (de) | 2014-08-28 | 2016-03-03 | Robert Bosch Gmbh | Zylindertrommel für eine hydrostatische Axialkolbeneinheit |
DE102014220763A1 (de) * | 2014-10-14 | 2016-04-14 | Robert Bosch Gmbh | Hydrostatische Maschine |
CN105201816B (zh) * | 2015-09-07 | 2017-03-22 | 福州大学 | 一种斜盘式柱塞泵的缸体自冷却结构 |
CN105332875B (zh) * | 2015-11-17 | 2017-12-19 | 四川嘉泉科技有限公司 | 一种多功能水油两用电动泵 |
DE102016114148A1 (de) * | 2016-08-01 | 2018-02-01 | L'orange Gmbh | Hochdruckpumpe, insbesondere zur Kraftstoffeinspritzung |
JP2018076826A (ja) * | 2016-11-10 | 2018-05-17 | 川崎重工業株式会社 | シリンダブロックとそれを備えた斜板形液圧回転装置 |
DE102018205884A1 (de) * | 2018-04-18 | 2019-10-24 | Robert Bosch Gmbh | Axialkolbenmaschine mit Druckentlastung in den Durchtriebsraum |
US11118681B2 (en) * | 2019-04-24 | 2021-09-14 | Purdue Research Foundation | Piston-type positive displacement machine with a pressure-adaptive piston-cylinder interface |
US11621604B2 (en) | 2020-02-16 | 2023-04-04 | Purdue Research Foundation | Integrated electro-hydraulic machine |
DE102021209515A1 (de) * | 2021-08-31 | 2023-03-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hydrostatische Axialkolbenmaschine mit einem Kühlkreislauf und Servo-hydraulischer Aktuator mit einer hydrostatischen Axialkolbenmaschine und mit einem Kühlkreislauf |
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US3089426A (en) * | 1958-09-17 | 1963-05-14 | New York Air Brake Co | Engine |
DE1824227U (de) * | 1959-06-10 | 1960-12-29 | Masch Und Bohrgeraet Fabrik A | Zylinderbuechse, die fuer den einbau in kolbenpumpen, insbesondere rotary-spulpumpen, geeignet ist. |
DE1403754A1 (de) * | 1960-08-31 | 1969-01-23 | Mini Of Technology | Druckmittelbetaetigte Maschine mit hin- und hergehendem Kolben |
FR1386356A (fr) * | 1963-11-29 | 1965-01-22 | Rech Etudes Prod | Dispositif de graissage des pompes et moteurs hydrauliques à cylindres multiples dutype à barillet |
DE1267985B (de) * | 1964-06-06 | 1968-05-09 | Bosch Gmbh Robert | Laufbuchse fuer Kolbenpumpen |
US3437015A (en) * | 1967-10-30 | 1969-04-08 | Abex Corp | Piston type fluid motor having separately fed piston shoes |
FR1595812A (de) * | 1968-11-28 | 1970-06-15 | ||
GB1309746A (en) * | 1969-04-11 | 1973-03-14 | Clerk R C | Axial piston rotary barrel type hydraulic pumps or motors |
DE2812418A1 (de) * | 1978-03-22 | 1979-10-04 | Linde Ag | Zylindertrommel fuer eine hydrostatische kolbenmaschine und verfahren zu deren herstellung |
US4352637A (en) * | 1980-06-04 | 1982-10-05 | General Signal Corporation | Jet cooling pump |
JPH02230980A (ja) * | 1989-03-02 | 1990-09-13 | Toyota Autom Loom Works Ltd | 斜板式圧縮機 |
US4932310A (en) * | 1989-06-01 | 1990-06-12 | The Oilgear Company | Bearing lubrication in axial piston fluid devices |
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US5486098A (en) * | 1992-12-28 | 1996-01-23 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Swash plate type variable displacement compressor |
-
1994
- 1994-06-30 DE DE4423023A patent/DE4423023C2/de not_active Expired - Fee Related
-
1995
- 1995-06-07 WO PCT/EP1995/002180 patent/WO1996000838A1/de active IP Right Grant
- 1995-06-07 US US08/765,341 patent/US5971717A/en not_active Expired - Lifetime
- 1995-06-07 JP JP50274496A patent/JP3570517B2/ja not_active Expired - Fee Related
- 1995-06-07 DE DE59503183T patent/DE59503183D1/de not_active Expired - Lifetime
- 1995-06-07 EP EP95921838A patent/EP0767864B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009052608A1 (de) | 2009-11-03 | 2011-05-05 | Robert Bosch Gmbh | Axialkolbenmaschine in Schrägscheibenbauweise |
WO2011054409A2 (de) | 2009-11-03 | 2011-05-12 | Robert Bosch Gmbh | Axialkolbenmaschine in schrägscheibenbauweise |
Also Published As
Publication number | Publication date |
---|---|
EP0767864A1 (de) | 1997-04-16 |
JP3570517B2 (ja) | 2004-09-29 |
US5971717A (en) | 1999-10-26 |
DE4423023C2 (de) | 1998-07-09 |
WO1996000838A1 (de) | 1996-01-11 |
DE59503183D1 (de) | 1998-09-17 |
JPH10502148A (ja) | 1998-02-24 |
DE4423023A1 (de) | 1996-01-04 |
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