EP0851121A1 - Hydraulischer Transformator mit zwei Axialkolbenmaschinen mit einer gemeinsamen Schwenkscheibe - Google Patents

Hydraulischer Transformator mit zwei Axialkolbenmaschinen mit einer gemeinsamen Schwenkscheibe Download PDF

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Publication number
EP0851121A1
EP0851121A1 EP97121125A EP97121125A EP0851121A1 EP 0851121 A1 EP0851121 A1 EP 0851121A1 EP 97121125 A EP97121125 A EP 97121125A EP 97121125 A EP97121125 A EP 97121125A EP 0851121 A1 EP0851121 A1 EP 0851121A1
Authority
EP
European Patent Office
Prior art keywords
axial piston
swivel
piston machines
hydraulic transformer
swash plate
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
EP97121125A
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German (de)
English (en)
French (fr)
Other versions
EP0851121B1 (de
Inventor
Jörg Dantlgraber
Michael Robohm
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.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth AG
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Filing date
Publication date
Application filed by Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Publication of EP0851121A1 publication Critical patent/EP0851121A1/de
Application granted granted Critical
Publication of EP0851121B1 publication Critical patent/EP0851121B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01B3/0035—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or 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
    • 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
    • F04B1/22—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 having two or more sets of cylinders or pistons
    • F04B1/24—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 having two or more sets of cylinders or pistons inclined to the main shaft axis

Definitions

  • the invention relates to a hydraulic transformer with axial piston machines according to the preamble of claim 1.
  • Hydraulic transformers with two axial piston machines are known (see Hydraulic Trainer, Vol. 6, Rd 00293 / 08.89, p. 144). These are around mechanically coupled hydrostatic units, one of which is connected to a system is connected with an impressed operating pressure, and the other with one hydraulic cylinder is connected. For moving the cylinder against load the unit connected to the cylinder works as a pump, from which the System driven by an impressed operating pressure-fed motor. At the Retracting the cylinder under load reverses the functions of the transformer um and the unit previously operating as a motor now in turn feeds into the secondary system back.
  • DE 32 02 015 contains two exemplary embodiments of such Transformer explained.
  • the object underlying the invention is the construction cost to reduce such transformers and also a larger adjustment range to achieve both machines.
  • the opposite stroke adjustment advantageous through the common swivel plate.
  • the cylinder actuation mentioned at the beginning can be used to move the cylinder against load as a motor Swing out fully working unit connected to the constant pressure network, see above that the unit working as a pump, connected to the cylinder on a corresponding small stroke volume is set and thus the cylinder with a very can apply high pressure.
  • the cylinder is lowered, the Adjusted the lifting disc so that the unit, which now functions as a motor, is swung out is and thus a rapid drop is achieved, while the now unit working as a pump with a low stroke setting high pressure medium Delivers pressure back to the constant pressure network.
  • a first embodiment is shown.
  • two axial piston machines 4 and 5 arranged in one fixed housing 1 are opposite each other on both sides of one Swash plate 3 two axial piston machines 4 and 5 arranged.
  • Any axial piston machine has a cylinder drum 6, which by means of a bearing 7 around a fixed shaft 8 connected to the housing 1 is rotatably arranged is.
  • the cylinder drum 6 several pistons 9 run, the end of which as ball joints 10 are formed which in corresponding recesses of the swash plate 3rd to sit.
  • the control and thus the supply and discharge of the pressure medium takes place Via kidney-shaped slots 11 in a control plate 12, which is fixed to the housing 1 connected is.
  • One axial piston machine is provided with a slot 11 Pressure source, in particular a constant pressure network or a system with an embossed Pressure and tank connected while the other axial piston unit is connected to a cylinder, for example.
  • the necessary hydraulic Connections are not shown. Examples can be found in the mentioned DE 32 02 015. Furthermore, the structure and operation of such Axial piston machines assumed to be known.
  • the two axial piston machines 5 and 6 arranged so that their axes, ie the axes of rotation of the cylinder drums 6 cut at an obtuse angle.
  • Vertical on the The intersection of these axes of rotation is the pivot axis for the adjustment of the Swivel plate 3.
  • the shaft axes are in Fig. 1 with W and the swivel axis marked with S.
  • the ball joints 10 in corresponding recesses the swash plate 3 engaging piston 9, the swash plate 3 is taken and the torque is transmitted via the swash plate.
  • the swash plate 3 is in turn supported in a ring 15 which is U-shaped Has cross section.
  • the adjustment of the ring 15 and thus the swash plate 3 takes place via two servo cylinders 19, the piston ends of which sit articulated in piston shoes 20, which are supported on the outside of the ring 15.
  • the swiveling of the swash plate with the help of the servo cylinder 19 3 is shown in dashed lines in FIG. 1.
  • the stroke adjustment takes place two axial piston units 4 and 5 in opposite directions, i.e. a larger stroke of some Unit is coupled with a correspondingly smaller stroke of the other unit.
  • Fig. 2 is a view of the Swash plate 3 seen in the direction of arrow II-II in Fig. 1.
  • the swashplate 3 is rotatably supported in the ring 15 by means of the rolling elements 17.
  • Centric to Pivot axis S are attached to the ring 15, two pins 22, which in the bearing 23 Housing 1 are rotatably held. The swashplate is thus pivoted 3 about the pivot axis S.
  • Fig. 3 are the two axial piston units, which in turn are of simplicity are provided with the same reference numerals 4 and 5, coaxially to each other arranged on opposite sides of a swash plate 30.
  • the axial block units in turn consist of the above-described exemplary embodiment each consisting of a rotating, bearing 7 and pin 8 rotatably arranged Cylinder drum 6 and several pistons 9, their ball joints 10 in piston shoes 13 are arranged.
  • the control disc 12 with the control slots 11 is in turn connected to the housing 1.
  • the swivel plate 30 is V-shaped in cross section.
  • the pivot axis the swivel plate 30 is designated S and lies to the shaft axis W of the Axial piston machines vertical.
  • the piston shoes 13 run on the outside the V-shaped swivel plate 30, so that an increase in the stroke of one Machine causes a reduction in the stroke of the other machine.
  • the swivel disk 30 is supported about the swivel axis S. a rolling ring 33 between a fixed to the swivel plate 30 annular plate 34 and an annular recess 35 in the housing 1st
  • the adjustment is carried out via two servo cylinders 19, the piston shoes 20 of which an extension 36 of the swivel plate 30 are supported in opposite directions.
  • the torque transmission takes place between the two axial piston machines 4 and 5 via a common shaft 38 which with the cylinder drums 6 is firmly connected.
  • FIG. 4 Another embodiment is shown in FIG. 4.
  • a common one Cylinder drum 40 is provided which is rotatably supported in the housing 1 via bearings 41 is.
  • the pistons 42 of the one axial piston machine 43 and the pistons 44 of the other axial piston machine 45 are accommodated in the drum 40 on two pitch circles.
  • the control plate 46 with the control slots is fastened in the housing and connected in a manner not shown to the printing network or the consumer.
  • the different diameters of the pistons 42 and 44 come from that the number of pistons 42 and their stroke on the outer pitch circle is larger is the number of pistons 44 and their stroke on the inner pitch circle. All Pistons are in turn provided with piston shoes 48 which are attached to a swivel plate 50 are supported.
  • the swivel plate 50 has on the running surfaces 51 for the pistons 42 and 52 for the piston 44 a V-shaped angle, so that an enlargement of the Stroke of one machine causes a reduction in the stroke of the other machine.
  • the swivel disk 50 is perpendicular to the shaft axis about the swivel axis S. W of the drum 40 is pivotally mounted.
  • the storage takes place as in 3, via a connected to the swivel plate 50 Ring 54 which is rotatably supported in the housing 1.
  • the adjustment is made again via servo cylinder 19, the piston shoes 20 with the outer edge of the swash plate 50 work together.
  • pistons 42 and 44 are corresponding in diameter and number adapt.
  • the swivel plate 50 may be divided, such that only one with the pistons 42 cooperating outer ring is adjustable, while that with the inner Piston 44 cooperating disc is arranged stationary.
  • This variation then forms a transformer in which the inner axial piston machine as Constant unit is executed, the stroke volume so according to the oblique Tread of the fixed inner disc is determined, while only the outer Axial piston machine is adjustable via the adjustable swivel plate 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP97121125A 1996-12-27 1997-12-02 Hydraulischer Transformator mit zwei Axialkolbenmaschinen mit einer gemeinsamen Schwenkscheibe Expired - Lifetime EP0851121B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19654567 1996-12-27
DE19654567A DE19654567A1 (de) 1996-12-27 1996-12-27 Hydraulischer Transformator

Publications (2)

Publication Number Publication Date
EP0851121A1 true EP0851121A1 (de) 1998-07-01
EP0851121B1 EP0851121B1 (de) 2001-10-31

Family

ID=7816340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121125A Expired - Lifetime EP0851121B1 (de) 1996-12-27 1997-12-02 Hydraulischer Transformator mit zwei Axialkolbenmaschinen mit einer gemeinsamen Schwenkscheibe

Country Status (2)

Country Link
EP (1) EP0851121B1 (un)
DE (2) DE19654567A1 (un)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000007796A1 (de) 1998-08-01 2000-02-17 Mannesmann Rexroth Ag Hydrostatisches antriebssystem für eine spritzgiessmaschine und verfahren zum betreiben eines solchen antriebssystems
WO2003087575A1 (de) * 2002-04-17 2003-10-23 Bosch Rexroth Ag Hydrotransformator
CN102562690A (zh) * 2012-02-07 2012-07-11 北京理工大学 一种小流量脉动液压变压器
WO2012119802A1 (de) * 2011-03-10 2012-09-13 Robert Bosch Gmbh Axialkolbenmaschinenanordnung
CN102788062A (zh) * 2012-08-10 2012-11-21 中国船舶重工集团公司第七一九研究所 一种用于斜盘式液压变压器的转速调节装置
CN105351259A (zh) * 2015-12-02 2016-02-24 哈尔滨工业大学 一种双缸体对顶配流端面的斜盘柱塞式液压变压器
CN105864124A (zh) * 2016-05-04 2016-08-17 太原科技大学 一种具有双缸体的液压变压器
CN106286433A (zh) * 2016-11-03 2017-01-04 太原科技大学 一种具有摆动斜盘和转动配流盘的液压变压器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007022022A1 (de) 2007-05-08 2008-11-13 Claas Selbstfahrende Erntemaschinen Gmbh Hydrostatische Maschine und diese verwendender Wandler
DE102012006290A1 (de) 2012-03-29 2013-10-02 Robert Bosch Gmbh Hydrotransformator

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520632A (en) * 1945-03-22 1950-08-29 Torq Electric Mfg Company Hydraulic pump or motor
DE1162156B (de) * 1957-01-19 1964-01-30 Hans Molly Dipl Ing Hydropneumatischer Energieumformer
US3204411A (en) * 1964-04-06 1965-09-07 Ford Motor Co Hydrostatic drive
US3504492A (en) * 1968-04-26 1970-04-07 Johannes Neukirch Power-branching hydraulic axial piston type transmission
US3733963A (en) * 1971-03-29 1973-05-22 Abex Corp Method and apparatus for controlling displacement of a variable volume pump or motor
SU804858A1 (ru) * 1977-12-09 1981-02-15 Уральский Ордена Трудового Красногознамени Политехнический Институтимени C.M.Кирова Аксиально-поршнева гидромашина
WO1981003677A1 (en) * 1980-06-16 1981-12-24 Varitran Inc Variable positive displacement fluid motor/pump apparatus
GB2116264A (en) * 1982-03-05 1983-09-21 Messier Hispano Sa Hydraulic power transducer
US4493189A (en) * 1981-12-04 1985-01-15 Slater Harry F Differential flow hydraulic transmission
DE3644052A1 (de) * 1986-12-22 1988-06-30 Linde Ag Einstellbare axialkolbenmaschine
EP0280532A2 (en) * 1987-02-25 1988-08-31 AlliedSignal Inc. Power transfer apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609970A (en) * 1970-03-06 1971-10-05 Abex Corp Hydraulic power transfer method and apparatus
US4075843A (en) * 1976-10-06 1978-02-28 Leker Richard E Hydraulic transmission
DE3024930A1 (de) * 1980-07-01 1982-01-28 Ludwig 8000 München Gehra Multivalentes kniehebel-system als druckverstaerker
DE3202015C2 (de) * 1982-01-22 1986-02-06 Mannesmann Rexroth GmbH, 8770 Lohr Hydraulisches Antriebssystem

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520632A (en) * 1945-03-22 1950-08-29 Torq Electric Mfg Company Hydraulic pump or motor
DE1162156B (de) * 1957-01-19 1964-01-30 Hans Molly Dipl Ing Hydropneumatischer Energieumformer
US3204411A (en) * 1964-04-06 1965-09-07 Ford Motor Co Hydrostatic drive
US3504492A (en) * 1968-04-26 1970-04-07 Johannes Neukirch Power-branching hydraulic axial piston type transmission
US3733963A (en) * 1971-03-29 1973-05-22 Abex Corp Method and apparatus for controlling displacement of a variable volume pump or motor
SU804858A1 (ru) * 1977-12-09 1981-02-15 Уральский Ордена Трудового Красногознамени Политехнический Институтимени C.M.Кирова Аксиально-поршнева гидромашина
WO1981003677A1 (en) * 1980-06-16 1981-12-24 Varitran Inc Variable positive displacement fluid motor/pump apparatus
US4493189A (en) * 1981-12-04 1985-01-15 Slater Harry F Differential flow hydraulic transmission
GB2116264A (en) * 1982-03-05 1983-09-21 Messier Hispano Sa Hydraulic power transducer
DE3644052A1 (de) * 1986-12-22 1988-06-30 Linde Ag Einstellbare axialkolbenmaschine
EP0280532A2 (en) * 1987-02-25 1988-08-31 AlliedSignal Inc. Power transfer apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section PQ Week 8146, Derwent World Patents Index; Class Q56, AN 81-L9010D, XP002062145, "AXIAL PISTON HYDRAULIC MACHINE" *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000007796A1 (de) 1998-08-01 2000-02-17 Mannesmann Rexroth Ag Hydrostatisches antriebssystem für eine spritzgiessmaschine und verfahren zum betreiben eines solchen antriebssystems
US6527540B1 (en) 1998-08-01 2003-03-04 Bosch Rexroth Ag Hydrostatic drive system for an injection molding machine and a method for operating such a drive system
WO2003087575A1 (de) * 2002-04-17 2003-10-23 Bosch Rexroth Ag Hydrotransformator
JP2005522631A (ja) * 2002-04-17 2005-07-28 ボッシュ レックスロート アクチエンゲゼルシャフト ハイドロトランスフォーマ
WO2012119802A1 (de) * 2011-03-10 2012-09-13 Robert Bosch Gmbh Axialkolbenmaschinenanordnung
CN102562690A (zh) * 2012-02-07 2012-07-11 北京理工大学 一种小流量脉动液压变压器
CN102788062A (zh) * 2012-08-10 2012-11-21 中国船舶重工集团公司第七一九研究所 一种用于斜盘式液压变压器的转速调节装置
CN105351259A (zh) * 2015-12-02 2016-02-24 哈尔滨工业大学 一种双缸体对顶配流端面的斜盘柱塞式液压变压器
CN105351259B (zh) * 2015-12-02 2017-06-06 哈尔滨工业大学 一种双缸体对顶配流端面的斜盘柱塞式液压变压器
CN105864124A (zh) * 2016-05-04 2016-08-17 太原科技大学 一种具有双缸体的液压变压器
CN106286433A (zh) * 2016-11-03 2017-01-04 太原科技大学 一种具有摆动斜盘和转动配流盘的液压变压器

Also Published As

Publication number Publication date
DE59705172D1 (de) 2001-12-06
DE19654567A1 (de) 1998-07-02
EP0851121B1 (de) 2001-10-31

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