EP0955465A2 - Axial piston pump with integrated system for measuring angular displacement - Google Patents
Axial piston pump with integrated system for measuring angular displacement Download PDFInfo
- Publication number
- EP0955465A2 EP0955465A2 EP99104637A EP99104637A EP0955465A2 EP 0955465 A2 EP0955465 A2 EP 0955465A2 EP 99104637 A EP99104637 A EP 99104637A EP 99104637 A EP99104637 A EP 99104637A EP 0955465 A2 EP0955465 A2 EP 0955465A2
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- EP
- European Patent Office
- Prior art keywords
- housing
- rotor
- axial piston
- pivotable
- representing
- 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.)
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Classifications
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- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
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- 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
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1205—Position of a non-rotating inclined plate
- F04B2201/12051—Angular position
Definitions
- the invention is based on an adjustable hydrostatic axial piston machine with at least one rotor, which is arranged in a housing and carries several cylinders and at least one disc arranged obliquely to the rotor, on which the pistons movable in the cylinders are supported.
- Electrohydraulically adjustable motors and pumps are increasingly being used in modern hydraulic drives.
- the adjusting element responsible for the change in volume flow for example a swash plate in the swash plate machine or the rotor in the swash axis machine, is adjusted via hydraulic adjusting cylinder drives.
- the respective adjusting cylinder is part of a closed control loop.
- the actual value signal required for the control loop is detected by a sensor element which measures the position and the change in position of the adjusting element.
- the swivel angle of the swashplate is usually accomplished by tapping the rotary movement in the virtual swivel point of the swashplate.
- the measurement is problematic and complex because the axis of rotation of the swash plate on the housing cannot be determined exactly.
- the pivoting movement must be sealed off from the housing via a shaft be brought out.
- a backlash-free or backlash-free coupling of the sensor to the lead-out shaft is required.
- a non-contact working measuring system comprising at least one sensor element and at least one element representing the measuring path is arranged between the housing and the disc or the pivoting rotor for adjusting the volume flow.
- the element representing the measuring path or the sensor element is arranged on the swashplate, while in the case of the machine with the swiveling rotor - the swashplate machine - the element representing the measuring path or the sensor element on one of the other Rotor adjoining control disc is arranged.
- the swivel angle of the adjusting element i.e. the swash plate or the swiveling cylinder drum
- the adjustment angle is not measured in the area of the geometric adjustment axis, but in the area of the swivel joint directly between the swash plate or the cylinder drum and the housing.
- the swivel joint can also represent the swivel bearing surface.
- an optoelectronic position detector is arranged in the housing part of the weighing bearing in the spatial area of the bearing joint.
- an elongated, thin-walled, light-sensitive semiconductor component in the housing.
- a miniature light source is glued into the swash plate opposite the semiconductor module.
- a light point emanating from the light source migrates on the semiconductor component.
- Electronics downstream of the semiconductor module determine the location of the light point in relation to the two ends of the semiconductor module in real time. If necessary, the swivel angle can be calculated from the distance between this location and a defined zero position of the swivel path and the radius of the weighing bearing.
- Such and similar non-contact displacement measuring systems do not require any installation space outside the pump housing, since they can generally be fully integrated in the housing wall. Because of the small size of the sensors, the space required inside the housing is negligibly small.
- the position measuring systems are generally insensitive to shocks and measure the pivoting movement over a relatively large diameter, so that the adjustment control can be designed very sensitively without complex electronics. Since usually no moving mechanical components are led out of the housing, there are no sealing and adjustment problems.
- the axial piston pump shown in FIG. 1 is a positive displacement pump with several pump pistons (30).
- the pump pistons (30) are arranged in a rotating, externally driven cylinder drum (25) in cylinder bores (26).
- the cylinder bores (26) are aligned parallel to the drive axis of rotation of the cylinder drum (25). They are at a constant distance from each other and from the drive axis of rotation.
- the cylinder drum (25) sits on a drive shaft (20) which is mounted in a cross-divided housing (10, 11).
- the fixed bearing consisting of a deep groove ball bearing (14) is seated in the cover (11) of the pump housing (10).
- the drive shaft (20) is guided in a needle bearing (15) representing a floating bearing.
- the cylinder drum (25) sits on the drive shaft (20) to a small extent via a spline toothing. It is arranged with the help of a between it and the drive shaft (20) Coil spring (21) pressed against a slot control plate (17) resting on the housing base.
- the rotary drive movement is converted into a pump piston stroke movement with the aid of a swash plate (33) which is rigid with respect to the rotary drive movement.
- the latter is pivotally mounted in the housing cover (11).
- the swivel axis of the swash plate (33) cuts the drive shaft (20) vertically.
- the support in the housing cover (11) has the form of a slide-mounted cradle bearing.
- two cylindrical disk segments (34) are formed on the rear of the swash plate (33), which rest in the housing cover (11) on two plain bearing shells (35) fixed there.
- the swash plate (33) is equipped at its upper edge with a lever (36) on which a hydraulically actuated adjusting piston (37) of a hydraulic adjusting drive acts against a return spring (38).
- a pressure regulator (39) arranged outside the housing (10) determines the stroke of the adjusting piston (37) and thus the swivel position of the swash plate (33).
- the pump pistons (30) rotating about the anti-drive axis are supported on the swash plate (33) with roller or sliding bearings.
- sliding blocks (31) sit between the swash plate (33) and the pump pistons (30).
- the sliding blocks (31) are held on the swash plate (33) at least on the suction side by a retaining plate (32).
- the pump pistons (30) which are guided past the cylinder disc segment (34) shown in the foreground move out of the cylinder drum (25).
- the Pump pistons (30) pass through the suction side. They suck in the pressure medium to be pumped via the slot control plate (17) and the suction channel (12) connected to it.
- the pressure medium is compressed on the side of the swash plate (33) to the left of the drive shaft (20).
- the pump pistons (30) are pushed into the cylinder drum (25) via the sliding blocks (31) in order to convey the pressure medium into the pressure channel (not shown) opposite the suction channel (12).
- the swivel angle of the swash plate (33) is measured.
- an incremental position measuring system is arranged, for example, in the area of the plain bearing shell (35) lying on the less loaded suction side.
- the measuring system operating in the incident light method has, for example, a grating support (40) arranged or embedded in the cylindrical disk segment (34). The latter wears e.g. a grating (41), a reference mark (42) and a direction mark.
- the reference mark (42) is arranged, for example, in the middle of the total swivel range of the swash plate (33).
- the cavity in the slide bearing shell (35) located in the area of the grating support (40) is hydraulically connected to the housing interior via a bore or a channel. Consequently, no pressure or lubricant - falsifying the measurement result - can accumulate in the cavity in front of the grating support (40).
- the optical scanning device (44) of the position measuring system (40-44) is integrated in the housing cover (11). She prefers to sit at the center of the total swivel range of the swash plate (33). For example, it is glued in the housing cover (11) so that it is medium-tight.
- the displacement measuring system (40-44) in combination with the slide bearing shell (35) including the corresponding housing seal can be designed as a separately integrable assembly.
Abstract
Description
Die Erfindung geht aus von einer verstellbaren hydrostatischen Axialkolbenmaschine mit mindestens einem - in einem Gehäuse angeordneten - mehrere Zylinder tragenden Rotor und mindestens einer schräg zum Rotor angeordneten Scheibe, auf der sich die in den Zylindern beweglichen Kolben abstützen.The invention is based on an adjustable hydrostatic axial piston machine with at least one rotor, which is arranged in a housing and carries several cylinders and at least one disc arranged obliquely to the rotor, on which the pistons movable in the cylinders are supported.
In modernen Hydraulikantrieben werden zunehmend elektrohydraulisch verstellbare Motoren und Pumpen eingesetzt. Hierbei wird das für die Volumenstromänderung verantwortliche Verstellorgan, beispielsweise eine Schrägscheibe bei der Schrägscheibenmaschine oder der Rotor bei der Schrägachsenmaschine, über hydraulische Verstellzylinderantriebe verstellt. Der jeweilige Verstellzylinder ist Teil eines geschlossenen Regelkreises. Das für den Regelkreis erforderliche Istwertsignal wird über ein Sensorelement erfaßt, das die Lage und die Lageänderung des Verstellorgans mißt. Bei einer Schrägscheibenaxialkolbenpumpe wird der Schwenkwinkel der Schrägscheibe üblicherweise durch Abgriff der rotativen Bewegung im virtuellen Schwenkpunkt der Schrägscheibe bewerkstelligt. Die Messung ist problematisch und aufwendig, weil die Drehachse der Schrägscheibe am Gehäuse nicht exakt feststellbar ist. Zudem muß die Schwenkbewegung über eine Welle abgedichtet aus dem Gehäuse herausgeführt werden. Ferner ist eine spiel- bzw. umkehrspannenfreie Ankopplung des Sensors an die herausgeführte Welle erforderlich.Electrohydraulically adjustable motors and pumps are increasingly being used in modern hydraulic drives. The adjusting element responsible for the change in volume flow, for example a swash plate in the swash plate machine or the rotor in the swash axis machine, is adjusted via hydraulic adjusting cylinder drives. The respective adjusting cylinder is part of a closed control loop. The actual value signal required for the control loop is detected by a sensor element which measures the position and the change in position of the adjusting element. In a swashplate axial piston pump, the swivel angle of the swashplate is usually accomplished by tapping the rotary movement in the virtual swivel point of the swashplate. The measurement is problematic and complex because the axis of rotation of the swash plate on the housing cannot be determined exactly. In addition, the pivoting movement must be sealed off from the housing via a shaft be brought out. Furthermore, a backlash-free or backlash-free coupling of the sensor to the lead-out shaft is required.
Bei der erfindungsgemäßen Axialkolbenmaschine wird zwischen dem Gehäuse und der zum Verstellen des Volumenstroms schwenkbaren Scheibe oder dem schwenkbaren Rotor ein aus wenigstens jeweils mindestens einem Sensorelement und mindestens einem den Meßweg darstellenden Element umfassendes, berührungsfrei arbeitendes Wegmeßsystem angeordnet. Dabei ist bei der Maschine mit der schwenkbaren Scheibe - der Schrägscheibenaxialkolbenmaschine - das den Meßweg darstellende Element oder das Sensorelement an der Schrägscheibe angeordnet, während bei der Maschine mit dem schwenkbaren Rotor - der Schrägachsenmaschine - das den Meßweg darstellende Element oder das Sensorelement an einer an den Rotor anschließenden Steuerscheibe angeordnet ist.In the axial piston machine according to the invention, a non-contact working measuring system comprising at least one sensor element and at least one element representing the measuring path is arranged between the housing and the disc or the pivoting rotor for adjusting the volume flow. In the case of the machine with the swiveling disk - the swashplate axial piston machine - the element representing the measuring path or the sensor element is arranged on the swashplate, while in the case of the machine with the swiveling rotor - the swashplate machine - the element representing the measuring path or the sensor element on one of the other Rotor adjoining control disc is arranged.
Bei beiden Maschinentypen wird sowohl bei der Pumpen- als auch bei der Motorenausführung der Schwenkwinkel des Verstellorgans, also der Schrägscheibe oder der schwenkbaren Zylindertrommel, mit Hilfe eines in das Gehäuse integrierten Wegmeßsystems gemessen. Dabei wird der Verstellwinkel nicht im Bereich der geometrischen Verstellachse gemessen, sondern im Bereich der Schwenkfuge direkt zwischen der Schrägscheibe bzw. der Zylindertrommel und dem Gehäuse. Hierbei kann die Schwenkfuge gleichzeitig auch die Schwenklagerfläche darstellen.In both machine types, the swivel angle of the adjusting element, i.e. the swash plate or the swiveling cylinder drum, is measured both with the pump and the motor version with the aid of a position measuring system integrated in the housing. The adjustment angle is not measured in the area of the geometric adjustment axis, but in the area of the swivel joint directly between the swash plate or the cylinder drum and the housing. Here, the swivel joint can also represent the swivel bearing surface.
Beispielsweise wird bei einer nach dem Schrägscheibenprinzip arbeitenden Axialkolbenpumpe, die über eine in einer Wiegelagerung schwenkbaren Schrägscheibe verfügt, im Gehäuseteil des Wiegelagers in der Raumfläche der Lagerfuge ein optoelektronischer Positionsdetektor angeordnet. Dazu sitzt dort im Gehäuse ein länglicher, dünnwandiger lichtempfindlicher Halbleiterbaustein. Dem Halbleiterbaustein gegenüber ist in der Schrägscheibe eine Miniaturlichtquelle eingeklebt. Bei einem Schwenken der Schrägscheibe wandert ein von der Lichtquelle ausgehender Lichtpunkt auf dem Halbleiterbaustein. Eine dem Halbleiterbaustein nachgeschaltete Elektronik ermittelt in Echtzeit den Ort des Lichtpunkts in Relation zu den beiden Enden des Halbleiterbausteins. Aus dem Abstand dieses Ortes gegenüber einer definierten Nullage des Schwenkweges und dem Radius des Wiegelagers läßt sich bei Bedarf der Schwenkwinkel errechnen.For example, in the case of an axial piston pump which operates according to the swashplate principle and has a swashplate which can be pivoted in a weighing bearing, an optoelectronic position detector is arranged in the housing part of the weighing bearing in the spatial area of the bearing joint. For this purpose, there is an elongated, thin-walled, light-sensitive semiconductor component in the housing. A miniature light source is glued into the swash plate opposite the semiconductor module. When the swashplate is pivoted, a light point emanating from the light source migrates on the semiconductor component. Electronics downstream of the semiconductor module determine the location of the light point in relation to the two ends of the semiconductor module in real time. If necessary, the swivel angle can be calculated from the distance between this location and a defined zero position of the swivel path and the radius of the weighing bearing.
Solche und ähnliche berührungsfreie Wegmeßsysteme benötigen außerhalb des Pumpengehäuses keinen Bauraum, da sie in der Regel in der Gehäusewandung vollständig integrierbar sind. Wegen der geringen Baugröße der Sensoren ist der Bauraumbedarf innerhalb des Gehäuses verschwindend klein. Die Wegmeßsysteme sind in der Regel stoßunempfindlich und messen die Schwenkbewegung auf einem relativ großen Durchmesser, so daß die Verstellregelung ohne aufwendige Elektronik sehr feinfühlig ausgelegt werden kann. Da in der Regel keine bewegten mechanischen Bauteile aus dem Gehäuse herausgeführt werden, gibt es keine Dichtigkeits- und Justierprobleme.Such and similar non-contact displacement measuring systems do not require any installation space outside the pump housing, since they can generally be fully integrated in the housing wall. Because of the small size of the sensors, the space required inside the housing is negligibly small. The position measuring systems are generally insensitive to shocks and measure the pivoting movement over a relatively large diameter, so that the adjustment control can be designed very sensitively without complex electronics. Since usually no moving mechanical components are led out of the housing, there are no sealing and adjustment problems.
Weitere Einzelheiten der Erfindung ergeben sich aus den hier nicht zitierten Unteransprüchen und der nachfolgenden Beschreibung einer schematisch dargestellten Ausführungsform:
- Figur 1:
- Schrägscheibenaxialkolbenpumpe im Teilschnitt mit einem Schrägscheiben-Schwenkwegsensor;
- Figure 1:
- Partial section swash plate axial piston pump with a swash plate swivel travel sensor;
Die in Figur 1 dargestellte Axialkolbenpumpe ist eine Verdrängungspumpe mit mehreren Pumpenkolben (30). Die Pumpenkolben (30) sind in einer rotierenden, fremdangetriebenen Zylindertrommel (25) in Zylinderbohrungen (26) angeordnet. Die Zylinderbohrungen (26) sind parallel zur Antriebsdrehachse der Zylindertrommel (25) ausgerichtet. Sie haben untereinander und gegenüber der Antriebsdrehachse jeweils einen konstanten Abstand.The axial piston pump shown in FIG. 1 is a positive displacement pump with several pump pistons (30). The pump pistons (30) are arranged in a rotating, externally driven cylinder drum (25) in cylinder bores (26). The cylinder bores (26) are aligned parallel to the drive axis of rotation of the cylinder drum (25). They are at a constant distance from each other and from the drive axis of rotation.
Die Zylindertrommel (25) sitzt auf einer Antriebswelle (20), die in einem quergeteilten Gehäuse (10, 11) gelagert ist. Im Deckel (11) des Pumpengehäuses (10) sitzt das aus einem Rillenkugellager (14) bestehende Festlager. Im Inneren des Pumpengehäuses (10) ist die Antriebswelle (20) in einem ein Loslager darstellenden Nadellager (15) geführt. Die Zylindertrommel (25) sitzt über eine Keilwellenverzahnung in geringem Maße längsverschieblich auf der Antriebswelle (20). Sie wird mit Hilfe einer zwischen ihr und der Antriebswelle (20) angeordneten Schraubenfeder (21) gegen eine am Gehäuseboden anliegende Schlitzsteuerplatte (17) gedrückt.The cylinder drum (25) sits on a drive shaft (20) which is mounted in a cross-divided housing (10, 11). The fixed bearing consisting of a deep groove ball bearing (14) is seated in the cover (11) of the pump housing (10). In the interior of the pump housing (10), the drive shaft (20) is guided in a needle bearing (15) representing a floating bearing. The cylinder drum (25) sits on the drive shaft (20) to a small extent via a spline toothing. It is arranged with the help of a between it and the drive shaft (20) Coil spring (21) pressed against a slot control plate (17) resting on the housing base.
Die Umsetzung der Antriebsdrehbewegung in eine Pumpenkolbenhubbewegung erfolgt mit Hilfe einer bezüglich der Antriebsdrehbewegung drehstarren Schrägscheibe (33). Letztere ist im Gehäusedeckel (11) schwenkbar gelagert. Die Schwenkachse der Schrägscheibe (33) schneidet die Antriebswelle (20) senkrecht. Die Abstützung im Gehäusedeckel (11) hat die Form einer gleitgelagerten Wiegelagerung. Dazu sind an der Rückseite der Schrägscheibe (33) zwei Zylinderscheibensegmente (34) angeformt, die im Gehäusedeckel (11) an zwei dort ortsfest befestigten Gleitlagerschalen (35) anliegen.The rotary drive movement is converted into a pump piston stroke movement with the aid of a swash plate (33) which is rigid with respect to the rotary drive movement. The latter is pivotally mounted in the housing cover (11). The swivel axis of the swash plate (33) cuts the drive shaft (20) vertically. The support in the housing cover (11) has the form of a slide-mounted cradle bearing. For this purpose, two cylindrical disk segments (34) are formed on the rear of the swash plate (33), which rest in the housing cover (11) on two plain bearing shells (35) fixed there.
Die Schrägscheibe (33) ist nach Figur 1 an ihrem oberen Rand mit einem Hebel (36) ausgestattet, auf den gegen eine Rückstellfeder (38) ein hydraulisch betätigter Verstellkolben (37) eines hydraulischen Verstellantriebs wirkt. Beispielsweise ein außerhalb des Gehäuses (10) angeordneter Druckregler (39) bestimmt den Hub des Verstellkolbens (37) und damit die Schwenkstellung der Schrägscheibe (33).According to FIG. 1, the swash plate (33) is equipped at its upper edge with a lever (36) on which a hydraulically actuated adjusting piston (37) of a hydraulic adjusting drive acts against a return spring (38). For example, a pressure regulator (39) arranged outside the housing (10) determines the stroke of the adjusting piston (37) and thus the swivel position of the swash plate (33).
Die um die Anitriebsachse rotierenden Pumpenkolben (30) stützen sich an der Schrägscheibe (33) wälz- oder gleitgelagert ab. Bei der Pumpe nach Figur 1 sitzen Gleitsteine (31) zwischen der Schrägscheibe (33) und den Pumpenkolben (30). Die Gleitsteine (31) werden zumindest auf der Saugseite durch eine Rückhalteplatte (32) an der Schrägscheibe (33) gehalten.The pump pistons (30) rotating about the anti-drive axis are supported on the swash plate (33) with roller or sliding bearings. In the pump according to FIG. 1, sliding blocks (31) sit between the swash plate (33) and the pump pistons (30). The sliding blocks (31) are held on the swash plate (33) at least on the suction side by a retaining plate (32).
Dreht sich beispielsweise die Antriebswelle (20) in der Drehrichtung (1) so bewegen sich die hinter dem im Vordergrund dargestellten Zylinderscheibensegment (34) vorbeigeführten Pumpenkolben (30) aus der Zylindertrommel (25) heraus. Die Pumpenkolben (30) durchlaufen die Saugseite. Sie saugen über die Schlitzsteuerplatte (17) und den daran anschließenden Saugkanal (12) das zu fördernde Druckmittel an. Das Druckmittel wird im Ausführungsbeispiel auf der links von der Antriebswelle (20) gelegenen Seite der Schrägscheibe (33) verdichtet. Dort werden die Pumpenkolben (30) über die Gleitsteine (31) in die Zylindertrommel (25) hineingeschoben, um das Druckmittel in den nicht dargestellten, dem Saugkanal (12) gegenüberliegenden Druckkanal zu fördern.If, for example, the drive shaft (20) rotates in the direction of rotation (1), the pump pistons (30) which are guided past the cylinder disc segment (34) shown in the foreground move out of the cylinder drum (25). The Pump pistons (30) pass through the suction side. They suck in the pressure medium to be pumped via the slot control plate (17) and the suction channel (12) connected to it. In the exemplary embodiment, the pressure medium is compressed on the side of the swash plate (33) to the left of the drive shaft (20). There, the pump pistons (30) are pushed into the cylinder drum (25) via the sliding blocks (31) in order to convey the pressure medium into the pressure channel (not shown) opposite the suction channel (12).
Um nun während des Pumpenbetriebs den Volumenstrom des Druckmittels elektrisch oder elektrohydraulisch regeln zu können, wird der Schwenkwinkel der Schrägscheibe (33) gemessen. Dazu ist gemäß Figur 1 im Bereich der auf der weniger belasteten Saugseite liegenden Gleitlagerschale (35) beispielhaft ein inkrementales Wegmeßsystem angeordnet. Das im Auflichtverfahren arbeitende Meßsystem hat beispielsweise einen im Zylinderscheibensegment (34) angeordneten oder eingelassenen Strichgitterträger (40). Letzterer trägt z.B. ein Strichgitter (41), eine Referenzmarke (42) und eine Richtungsmarkierung. Die Referenzmarke (42) ist beispielsweise in der Mitte des Gesamtschwenkbereiches der Schrägscheibe (33) angeordnet.In order to be able to regulate the volume flow of the pressure medium electrically or electrohydraulically during pump operation, the swivel angle of the swash plate (33) is measured. For this purpose, according to FIG. 1, an incremental position measuring system is arranged, for example, in the area of the plain bearing shell (35) lying on the less loaded suction side. The measuring system operating in the incident light method has, for example, a grating support (40) arranged or embedded in the cylindrical disk segment (34). The latter wears e.g. a grating (41), a reference mark (42) and a direction mark. The reference mark (42) is arranged, for example, in the middle of the total swivel range of the swash plate (33).
Der im Bereich des Strichgitterträgers (40) liegende Hohlraum in der Gleitlagerschale (35) ist mit dem Gehäuseinnenraum über eine Bohrung oder einen Kanal hydraulisch verbunden. Folglich kann sich in dem Hohlraum vor dem Strichgitterträger (40) kein - das Meßergebnis verfälschendes - Druck- oder Schmiermittel ansammeln.The cavity in the slide bearing shell (35) located in the area of the grating support (40) is hydraulically connected to the housing interior via a bore or a channel. Consequently, no pressure or lubricant - falsifying the measurement result - can accumulate in the cavity in front of the grating support (40).
Die optische Abtasteinrichtung (44) des Wegmeßsystems (40-44) ist im Gehäusedeckel (11) integriert. Sie sitzt vorzugsweise auf der Höhe der Mitte des Gesamtschwenkbereiches der Schrägscheibe (33). Im Gehäusedeckel (11) ist sie beispielsweise durckmitteldicht eingeklebt.The optical scanning device (44) of the position measuring system (40-44) is integrated in the housing cover (11). She prefers to sit at the center of the total swivel range of the swash plate (33). For example, it is glued in the housing cover (11) so that it is medium-tight.
Alternativ können auch andere optoelektrisch, induktiv, oder magnetisch arbeitende Wegmeßsysteme verwendet werden.Alternatively, other optoelectrically, inductively or magnetically working position measuring systems can also be used.
Zur vereinfachten Montage und Wartung des Wegmeßsystems kann das Wegmeßsystem (40-44) in Kombination mit der Gleitlagerschale (35) einschließlich der entsprechenden Gehäuseabdichtung als eine separat integrierbare Baugruppe gestaltet sein.To simplify installation and maintenance of the displacement measuring system, the displacement measuring system (40-44) in combination with the slide bearing shell (35) including the corresponding housing seal can be designed as a separately integrable assembly.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19819960 | 1998-05-05 | ||
| DE1998119960 DE19819960B4 (en) | 1998-05-05 | 1998-05-05 | Axial piston machine with integrated Schwenkwegmeßsystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0955465A2 true EP0955465A2 (en) | 1999-11-10 |
| EP0955465A3 EP0955465A3 (en) | 2000-08-16 |
Family
ID=7866681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99104637A Withdrawn EP0955465A3 (en) | 1998-05-05 | 1999-03-09 | Axial piston pump with integrated system for measuring angular displacement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0955465A3 (en) |
| JP (1) | JPH11336656A (en) |
| DE (1) | DE19819960B4 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1251270A2 (en) * | 2001-04-19 | 2002-10-23 | Brueninghaus Hydromatik Gmbh | Variable capacity axial piston machine with inclination angle sensor |
| EP1251271A2 (en) * | 2001-04-19 | 2002-10-23 | Brueninghaus Hydromatik Gmbh | Variable capacity axial piston machine with inclination angle sensor |
| EP1462647A2 (en) * | 2003-03-25 | 2004-09-29 | Sauer Bibus GmbH | Rotary cylinder fluid pressure machine |
| DE102004015618A1 (en) * | 2004-03-30 | 2005-10-20 | Zexel Valeo Compressor Europe | Displacement variable compressor and method for controlling the piston stroke in such |
| WO2007017251A1 (en) | 2005-08-09 | 2007-02-15 | Brueninghaus Hydromatik Gmbh | Regulator device for a hydrostatic piston machine with electronic control unit |
| WO2010121686A1 (en) * | 2009-04-21 | 2010-10-28 | Robert Bosch Gmbh | Device for measuring a set swept volume |
| CN103573572A (en) * | 2012-07-28 | 2014-02-12 | 罗伯特·博世有限公司 | Hydrostatic axial piston machine of swash plate construction |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012221922A1 (en) * | 2012-11-29 | 2014-06-05 | Hawe Inline Hydraulik Gmbh | Pump, in particular axial piston pump with scanning on the swash plate |
| DE102018218548A1 (en) | 2018-10-30 | 2020-04-30 | Robert Bosch Gmbh | Hydrostatic piston machine |
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| DE3208250A1 (en) * | 1982-03-08 | 1983-09-15 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR CONTROLLING AND / OR REGULATING AN AXIAL PISTON MACHINE |
| US4655689A (en) * | 1985-09-20 | 1987-04-07 | General Signal Corporation | Electronic control system for a variable displacement pump |
| DE3626619A1 (en) * | 1986-08-06 | 1988-02-18 | Hydromatik Gmbh | Hydraulic pump or hydraulic motor of adjustable volume of displacement |
| US5135031A (en) * | 1989-09-25 | 1992-08-04 | Vickers, Incorporated | Power transmission |
| DE4022301C1 (en) * | 1990-07-13 | 1991-10-24 | Brueninghaus Hydraulik Gmbh, 7240 Horb, De | |
| US5141402A (en) * | 1991-01-29 | 1992-08-25 | Vickers, Incorporated | Power transmission |
| US5554007A (en) * | 1994-10-17 | 1996-09-10 | Caterpillar Inc. | Variable displacement axial piston hydraulic unit |
| DE19538835C1 (en) * | 1995-10-18 | 1997-03-13 | Brueninghaus Hydromatik Gmbh | Axial-piston machine with adjustable swashplate |
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1998
- 1998-05-05 DE DE1998119960 patent/DE19819960B4/en not_active Expired - Fee Related
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1999
- 1999-03-09 EP EP99104637A patent/EP0955465A3/en not_active Withdrawn
- 1999-05-06 JP JP11126378A patent/JPH11336656A/en active Pending
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| None |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1251270A2 (en) * | 2001-04-19 | 2002-10-23 | Brueninghaus Hydromatik Gmbh | Variable capacity axial piston machine with inclination angle sensor |
| EP1251271A2 (en) * | 2001-04-19 | 2002-10-23 | Brueninghaus Hydromatik Gmbh | Variable capacity axial piston machine with inclination angle sensor |
| EP1251270A3 (en) * | 2001-04-19 | 2004-01-07 | Brueninghaus Hydromatik Gmbh | Variable capacity axial piston machine with inclination angle sensor |
| EP1251271A3 (en) * | 2001-04-19 | 2004-03-24 | Brueninghaus Hydromatik Gmbh | Variable capacity axial piston machine with inclination angle sensor |
| EP1462647A3 (en) * | 2003-03-25 | 2005-07-20 | Sauer Bibus GmbH | Rotary cylinder fluid pressure machine |
| DE10313426B3 (en) * | 2003-03-25 | 2004-11-11 | Sauer Bibus Gmbh | Verstellpumpeneinheit |
| EP1462647A2 (en) * | 2003-03-25 | 2004-09-29 | Sauer Bibus GmbH | Rotary cylinder fluid pressure machine |
| DE102004015618A1 (en) * | 2004-03-30 | 2005-10-20 | Zexel Valeo Compressor Europe | Displacement variable compressor and method for controlling the piston stroke in such |
| WO2007017251A1 (en) | 2005-08-09 | 2007-02-15 | Brueninghaus Hydromatik Gmbh | Regulator device for a hydrostatic piston machine with electronic control unit |
| US7975599B2 (en) | 2005-08-09 | 2011-07-12 | Brueninghaus Hydromatik Gmbh | Regulating device for a hydrostatic piston engine with electronic control unit |
| WO2010121686A1 (en) * | 2009-04-21 | 2010-10-28 | Robert Bosch Gmbh | Device for measuring a set swept volume |
| CN102405350A (en) * | 2009-04-21 | 2012-04-04 | 罗伯特·博世有限公司 | Device for measuring a set swept volume |
| CN102405350B (en) * | 2009-04-21 | 2014-10-15 | 罗伯特·博世有限公司 | Device for measuring a set swept volume |
| CN103573572A (en) * | 2012-07-28 | 2014-02-12 | 罗伯特·博世有限公司 | Hydrostatic axial piston machine of swash plate construction |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19819960B4 (en) | 2005-03-03 |
| JPH11336656A (en) | 1999-12-07 |
| EP0955465A3 (en) | 2000-08-16 |
| DE19819960A1 (en) | 1999-11-18 |
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