DE1038862B - Arrangement of the control surfaces in oil-hydraulic gears or oil-hydraulic pumps - Google Patents

Arrangement of the control surfaces in oil-hydraulic gears or oil-hydraulic pumps

Info

Publication number
DE1038862B
DE1038862B DEM27248A DEM0027248A DE1038862B DE 1038862 B DE1038862 B DE 1038862B DE M27248 A DEM27248 A DE M27248A DE M0027248 A DEM0027248 A DE M0027248A DE 1038862 B DE1038862 B DE 1038862B
Authority
DE
Germany
Prior art keywords
oil
control surfaces
hydraulic
arrangement
roller bearing
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.)
Pending
Application number
DEM27248A
Other languages
German (de)
Inventor
Ingrid Moser
Wilhelm Wemhoener
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.)
INGRID MOSER und WILHELM WEMHO
Original Assignee
INGRID MOSER und WILHELM WEMHO
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
Application filed by INGRID MOSER und WILHELM WEMHO filed Critical INGRID MOSER und WILHELM WEMHO
Priority to DEM27248A priority Critical patent/DE1038862B/en
Publication of DE1038862B publication Critical patent/DE1038862B/en
Pending legal-status Critical Current

Links

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
    • F01B3/0041—Arrangements for pressing the cylinder barrel against the valve plate, e.g. fluid pressure
    • 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
    • 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
    • F01B3/0047—Particularities in the contacting area between cylinder barrel and valve plate
    • F01B3/005—Bearing arrangements
    • 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
    • F01B3/0064—Machine housing
    • F01B3/0067—Machine housing cylinder barrel bearing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
    • F16H39/06—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type
    • F16H39/08—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders
    • F16H39/10—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders with cylinders arranged around, and parallel or approximately parallel to the main axis of the gearing
    • F16H39/14—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders with cylinders arranged around, and parallel or approximately parallel to the main axis of the gearing with cylinders carried in rotary cylinder blocks or cylinder-bearing members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

Anordnung der Steuerflächen bei ölhydraulischen Getrieben bzw. ölhydraulischen Pumpen Bei ölhydraulischen Getrieben bzw. Pumpen mit umlaufenden, vorzugsweise planen Steuerflächen ist es schwierig, diese mit hoher Drehzahl aufeinander laufenden Steuerflächen den Anforderungen entsprechend öldicht zu halten, besonders, weil der hohe Spaltdruck zwischen den Dichtflächen nur einseitig auftritt.Arrangement of the control surfaces in oil-hydraulic gearboxes or oil-hydraulic ones Pumps For oil-hydraulic gears or pumps with rotating, preferably planar It is difficult to control surfaces with these control surfaces which run against each other at high speed to keep the requirements oil-tight, especially because of the high nip pressure occurs only on one side between the sealing surfaces.

Trotz Verwendung bester Werkstoffe und feinster Oberflächenbearbeitung nützen sich diese Steuerflächen schnell ab und neigen zum Fressen besonders dann, wenn die geförderte Ölmenge gleich Null wird.Despite the use of the best materials and the finest surface processing these control surfaces wear out quickly and tend to seize, especially when when the amount of oil delivered is zero.

Bei der Erfindung wird die Abnutzung und der Verschleiß dieser Steuerflächen durch ein um den Außendurchmesser zwischen den Steuerflächen angeordnetes Axialwälzlager von hoher Genauigkeit vermieden.In the invention, the wear and tear of these control surfaces by an axial roller bearing arranged around the outer diameter between the control surfaces of high accuracy avoided.

In der Zeichnung ist als Ausführungsbeispiel ein ölhydraulisches Getriebe dargestellt, bei welchem zwischen den planen Steuerflächen der umlaufenden Zylinderkörper ein Axialwälzlager entsprechend der Erfindung vorgesehen ist.In the drawing, an oil-hydraulic transmission is an exemplary embodiment shown in which between the planar control surfaces of the circumferential cylinder body a thrust roller bearing is provided according to the invention.

In der Zeichnung ist 1 der umlaufende Zylinderkörper der einen Getriebeseite, 2 der umlaufende Zylinderkörper der anderen Zylinderseite. Bei 3 laufen die planen Steuerflächen der Zylinderkörper mit wechselnden Drehzahlen bzw. bei Drehrichtungswechsel gegenläufig aufeinander. 4 ist ein genau plan laufendes Axialwälzlager zwischen den beiden umlaufenden Zylinderkörpern 1 und 2. 5 ist ebenfalls ein Axialwälzlager mit dem Stützring 6 und den Anpreßkolben 7 und Federn B. 9 sind Kanäle, die den Raum vor den Kolben im Zylinderkörper mit den Anpreßkolben verbinden. 10 ist die Hauptwelle des Getriebes.In the drawing, 1 is the rotating cylinder body of one gear side, 2 the circumferential cylinder body of the other cylinder side. At 3 the plan is running Control surfaces of the cylinder body with changing speeds or when changing the direction of rotation opposite to each other. 4 is an exactly flat running axial roller bearing between the two rotating cylinder bodies 1 and 2. 5 is also an axial roller bearing with the support ring 6 and the pressure piston 7 and springs B. 9 are channels that the Connect the space in front of the piston in the cylinder body with the pressure piston. 10 is the Main shaft of the transmission.

Die Wirkungsweise ist folgende: Der Zylinderkörper 2 ist mit der Welle 10 fest verbunden, während der Zylinderkörper 1 auf der Welle leicht drehbar angeordnet ist. Die Übertragung der Drehmomente erfolgt über die Kolben und Pleuel.The mode of operation is as follows: The cylinder body 2 is with the shaft 10 firmly connected, while the cylinder body 1 is arranged on the shaft so as to be easily rotatable is. The torques are transmitted via the pistons and connecting rods.

Beim Lauf des Getriebes entsteht in den Zylinderräumen vor den Kolben auf der jeweiligen Druckseite ein Öldruck, der sich durch die Kanäle 9 auf die Anpreßkolben 7 überträgt. Die Anpreßkolben 7 mit Federn 8 stützen sich gegen das Axialwälzlager 5 ab und drücken die beiden Zylinderkörper 1 und 2 mit ihren planen Steuerflächen 3 unter Überwindung des Spaltdruckes zwischen den beiden Steuerflächen gegeneinander.When the gearbox is running, it arises in the cylinder spaces in front of the pistons an oil pressure on the respective pressure side, which is distributed through the channels 9 to the pressure piston 7 transmits. The pressure pistons 7 with springs 8 are supported against the axial roller bearing 5 and press the two cylinder bodies 1 and 2 with their flat control surfaces 3 by overcoming the gap pressure between the two control surfaces against each other.

In der Praxis ist es nicht möglich, den Anpreßdruck und den entgegenwirkenden Spaltdruck so genau abzustimmen, daß ein reibungsfreier Lauf der Steuerflächen aufeinander erreicht wird. Bei stoßweiser Belastung und höherer. Drücken tritt der Fall ein, daß der Ölfilm zwischen den Steuerflächen herausgepreßt wird. In diesem Fall ist dann der dem Anpreßdruck entgegenwirkende Spaltdruck gleich Null, und der gesamte Anpreßdruck wirkt auf die mit zerstörtem Ölfilm laufende Steuerfläche ein, wodurch diese Steuerflächen, wenn sie auch aus Werkstoffen mit besten Notlaufeigenschaften gefertigt werden, in kurzer Zeit zerstört werden.In practice it is not possible to adjust the contact pressure and the counteracting Adjust the gap pressure so precisely that the control surfaces run smoothly on each other is achieved. With intermittent loads and higher. Press the case, that the oil film is pressed out between the control surfaces. In this case it is then the nip pressure counteracting the contact pressure is zero, and the entire Contact pressure acts on the control surface running with the destroyed oil film, whereby these control surfaces, even if they are made of materials with the best emergency running properties are manufactured, can be destroyed in a short time.

Das erfindungsgemäß zwischen den beiden Laufflächen angeordnete Axialwälzlager 4 verhindert das Herauspressen des Ölfilms durch einen überhöhten Anpreßdruck und somit eine Zerstörung der Steuerflächen. Wegen der einseitigen Belastung der Steuerflächen ist es notwendig, dieses Wälzlager um den Außendurchmesser der Steuerflächen anzubringen, da ein innerhalb der Steuerflächen angebrachtes Axialwälzlager wegen der auftretenden Kippmomente nur beschränkt wirksam ist und keine Sicherheit gegen das Trockenlaufen der Steuerflächen am äußeren Durchmesser gibt. Je genauer dieses Axiallager 4 planparallel geschliffen und geläppt ist, um so geringer ist der Spaltverlust zwischen den Steuerflächen. Bei der Herstellung muß allerdings die Elastizität des Lagers berücksichtigt werden, indem der Abstand zwischen den beiden Steuerflächen so groß gehalten wird, daß auch bei plötzlich auftretenden Stößen der Ölfilm zwischen den Steuerflächen nicht abreißt.The axial roller bearing arranged according to the invention between the two running surfaces 4 prevents the oil film from being pressed out by excessive contact pressure and thus a destruction of the control surfaces. Because of the one-sided loading of the control surfaces it is necessary to mount this roller bearing around the outer diameter of the control surfaces, there is a thrust roller bearing mounted within the control surfaces because of the Tilting moments is only effective to a limited extent and there is no security against running dry of the control surfaces on the outer diameter there. The more precisely this axial bearing 4 is plane-parallel is ground and lapped, the lower the gap loss between the control surfaces. However, the elasticity of the bearing must be taken into account during manufacture, by keeping the distance between the two control surfaces so large that also in the event of sudden impacts, the oil film between the control surfaces does not tear off.

Claims (1)

PATENTA\SPRUCII: Anordnung der Steuerflächen bei ölhydraulischen Getrieben bzw. ölhydraulischen Pumpen mit einer bzw. zwei planen umlaufenden Steuerflächen und entsprechenden Steuerschlitzen für den Öldurchtritt, gekennzeichnet durch die an sich bekannte Anordnung eines Axialwälzlagers um den Außendurchmesser der Steuerflächen, dessen Höhe so bemessen ist, daß die innerhalb liegenden Dichtflächen öldicht aufeinander laufen, indem ein das zulässige Maß überschreitender Anpreßdruck der beiden Steuerflächen gegeneinander von diesem Wälzlager aufgenommen wird. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 457 803; USA.-Patentschrift Nr. 2 371974.PATENTA \ SPRUCII: Arrangement of the control surfaces in oil-hydraulic transmissions or oil-hydraulic pumps with one or two planar circumferential control surfaces and corresponding control slots for the oil passage, characterized by the known arrangement of an axial roller bearing around the outer diameter of the control surfaces, the height of which is dimensioned so that the inner sealing surfaces run oil-tight on each other, in that a contact pressure of the two control surfaces against each other that exceeds the permissible level is absorbed by this roller bearing. Documents considered: German Patent No. 457 803; U.S. Patent No. 2,371,974.
DEM27248A 1955-05-28 1955-05-28 Arrangement of the control surfaces in oil-hydraulic gears or oil-hydraulic pumps Pending DE1038862B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM27248A DE1038862B (en) 1955-05-28 1955-05-28 Arrangement of the control surfaces in oil-hydraulic gears or oil-hydraulic pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM27248A DE1038862B (en) 1955-05-28 1955-05-28 Arrangement of the control surfaces in oil-hydraulic gears or oil-hydraulic pumps

Publications (1)

Publication Number Publication Date
DE1038862B true DE1038862B (en) 1958-09-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEM27248A Pending DE1038862B (en) 1955-05-28 1955-05-28 Arrangement of the control surfaces in oil-hydraulic gears or oil-hydraulic pumps

Country Status (1)

Country Link
DE (1) DE1038862B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243020B (en) * 1961-04-27 1967-06-22 Kloeckner Humboldt Deutz Ag Longitudinal roller bearings for the cylinder drum of axial piston machines
WO2004104448A1 (en) * 2003-05-22 2004-12-02 Yanmar Co., Ltd. Hydrostatic stepless speed change device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE457803C (en) * 1929-09-10 Fritz Egersdoerfer Machine with rotating piston drum
US2371974A (en) * 1941-03-11 1945-03-20 Alfons H Neuland Fluid engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE457803C (en) * 1929-09-10 Fritz Egersdoerfer Machine with rotating piston drum
US2371974A (en) * 1941-03-11 1945-03-20 Alfons H Neuland Fluid engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243020B (en) * 1961-04-27 1967-06-22 Kloeckner Humboldt Deutz Ag Longitudinal roller bearings for the cylinder drum of axial piston machines
WO2004104448A1 (en) * 2003-05-22 2004-12-02 Yanmar Co., Ltd. Hydrostatic stepless speed change device

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