EP2422088A1 - Dispositif pour l'enregistrement d'une cylindrée réglée - Google Patents

Dispositif pour l'enregistrement d'une cylindrée réglée

Info

Publication number
EP2422088A1
EP2422088A1 EP10708142A EP10708142A EP2422088A1 EP 2422088 A1 EP2422088 A1 EP 2422088A1 EP 10708142 A EP10708142 A EP 10708142A EP 10708142 A EP10708142 A EP 10708142A EP 2422088 A1 EP2422088 A1 EP 2422088A1
Authority
EP
European Patent Office
Prior art keywords
groove
sensor
movement
actuating
actuating element
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.)
Withdrawn
Application number
EP10708142A
Other languages
German (de)
English (en)
Inventor
Werner Hörmann
Markus Schmid
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2422088A1 publication Critical patent/EP2422088A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—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
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • 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
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/20—Control of pumps with rotary cylinder block
    • F04B27/22—Control of pumps with rotary cylinder block by varying the relative positions of a swash plate and a cylinder block

Definitions

  • the invention relates to a device for detecting a set stroke volume of a hydrostatic piston engine.
  • a hydrostatic piston machine in Schrägachsenbauweise is known.
  • the axial piston machine is designed adjustable.
  • an adjusting device is provided with an actuating piston.
  • the adjusting piston is displaceably guided in the direction of its actuating piston axis and connected to the cylinder drum for adjustment.
  • a sensor is provided in order to detect the set swivel angle of the axial piston.
  • the sensor is designed as a rotation angle sensor.
  • a lever arm is arranged on the shaft of the sensor.
  • the sensor unit formed laterally on the housing has a relatively large distance from the actual actuator housing with increasing reduction. This makes it difficult Installation situation and the exposed position of the sensor leads to a considerable risk of damage.
  • the invention achieves the aforementioned object with the features of claim 1.
  • the device for detecting a set stroke volume or associated with this pivot angle of a hydrostatic piston engine has an actuating element for generating an actuating movement and a sensor for detecting a position of the actuating element.
  • the sensor generates a signal indicative of the position of the control element, the control element being connected to the sensor via a signal
  • this translation device now has a groove.
  • This groove extends along a plane lying parallel to the direction of movement of the actuating element.
  • Groove with a projection of the direction of movement of the actuating element in the plane of the groove a non-0 angle.
  • In the groove engages a transmission element for transmitting a movement of the actuating element on an actuating element of the sensor.
  • the transmission ratio is set. Without this, a distance between the actuator and the sensor must be increased, this can be done by adjusting the maximum adjustment movement to the detection range of the sensor. Leave it to realize a compact machine.
  • a transmission element in the groove is further ensured that regardless of a direction of movement always a restoring force is exerted on the transmission element.
  • Form rotational angle sensor wherein in a rotatable actuating element of the rotation angle sensor, the transmission element is arranged eccentrically.
  • the insertion of the transmission element into the groove of the transmission device thus leads due to the eccentric arrangement in the actuating element to a rotary motion and thus to an immediate control of the sensor.
  • the Anlenkkolben serves to transfer the position of the actuating piston on the ellesselemeht and so ultimately on the sensor.
  • the Anlenkkolben may optionally, without a redesign of the actual control element is required to make an adjustment, for example, to different sensors. This reduces the cost and facilitates the adaptation to different generations of aggregates. Only the translation device needs to be adjusted by changing the angle.
  • the flattening also allows the piston is secured in a simple manner against twisting.
  • a guide surface is preferably formed corresponding to the flattening in the receiving housing of the adjusting device. Furthermore, it is preferred that the groove is introduced into a Anlenkkolben and this Anlenkkolben has on its the actuator facing side a spring bearing. By forming the spring bearing to the
  • Anschkolben is a separate fixation of the actuating piston or the actuating element on the Anschkolben not required. Due to the spring force, the actuating element facing side of the Anlenkkolben is always held in contact with an end face of the actuating element.
  • the connecting piston and the adjusting element are connected to each other secured against rotation.
  • Such a rotation lock between the adjusting element and the connecting piston makes it possible, in particular, to use an anti-twist device, which is formed between the connecting piston and the housing, at the same time as a security against rotation for the actuating element.
  • the adjusting element itself can therefore be designed, for example, as a rotationally symmetrical actuating piston, which simplifies the production and thus ultimately reduces the costs.
  • the transmission element is preferably a ball stud.
  • the ball-head-shaped end of the ball stud engages in the groove.
  • the reliability is further increased because jamming in the groove is reliably avoided.
  • play in the spherical head design component tolerances, as they inevitably arise in manufacturing plays a minor role.
  • the positioning in the actuator is irrelevant.
  • the device according to the invention is an integral part of a hydrostatic piston machine.
  • the hydrostatic piston engine is already capable of the set To detect the swivel angle or the set stroke volume.
  • Fig.l a partial section through an axial piston machine in
  • Fig. 2 is a partial section through a part of a
  • Fig. 3 is a section along the line III-III of Fig. 2;
  • Fig. 5 is a perspective view of the Anschkolbens. 5 The following comments are from one
  • Axial piston machine in bent-axis design relate to a double pump, it being self-explanatory that the invention can also be applied to other hydrostatic piston machines 0 in which an actuating movement must be translated for detection by a swivel angle sensor or a displacement sensor. In the following, only the term of the swivel angle will be used.
  • a cylinder drum 2 is arranged, in which a plurality of pistons are arranged in cylinder bores in a generally known manner. Due to the set angle of the cylinder drum axis relative to an input or output shaft axis, ie the pivot angle, the displacement changes. This can be used to change the set intake or displacement volume.
  • a driver 3 is arranged in a control element in a housing-side mounting of the cylinder drum 2.
  • the adjusting element is preferably designed as a control piston 4.
  • the actuating piston 4 can be positioned between a first and second end position. This position corresponds to the set delivery volume in the case of an axial piston pump.
  • a device Position of the actuating piston 4 and thus the set pivot angle and thus the set stroke volume, a device according to the invention for detecting the pivot angle 5 is provided.
  • FIG. 1 For better clarity, only a first overview of the device 5 is given in FIG. 1, the details of which are given below with reference to the other figures.
  • the device 5 comprises a sensor 6.
  • the sensor 6 is designed in the illustrated embodiment as a rotary potentiometer. For detecting the pivoting angle, therefore, a linear movement or a set position of the actuating piston must be translated into an associated angular position of the shaft of the sensor 6.
  • a spring 8 which acts on the actuating piston 4 in the direction of a first end position.
  • the spring 8 engages a Anlenkkolben 7, which is held by the spring 8 in contact with the actuating piston 4.
  • a dowel pin is provided in the embodiment of FIG. The dowel pin engages in the mutually facing end faces of the actuating piston 4 and the Anlenkkolbens 7.
  • the actuating element 9 is an intermediate piece, which is adapted to the respective mounting situation of the sensor 6 and transmits a movement of a transmission element 10 to the shaft of the sensor 6.
  • the transmission element 10 is arranged eccentrically to the axis of the shaft of the sensor 6 as a rotational movement in the actuating element 9.
  • the axis of the transmission element 10 and the actuating element 9 are parallel to one another and in particular are perpendicular to the direction of movement of the actuating piston 4.
  • a groove 11 is introduced.
  • the groove 11 extends along a plane which is parallel to the direction of movement of the actuating piston 4.
  • the plane is also perpendicular to the axis of the shaft of the sensor 6.
  • the groove 11 is formed, wherein the groove extends obliquely to the direction of movement of the actuating piston 4. That a projection of the direction of movement or the
  • Stellkolbenachse on the plane includes with the longitudinal axis of the groove a 0 different angle. About the size of the angle can be doing the
  • Fig. 2 shows once again the device for detecting the pivot angle in an enlarged view.
  • the articulation piston 7 has a flattened region 12.
  • the Anschkolben 7 is characterized by a sequence of circular cross sections, wherein at the end remote from the sensor 6, a spring bearing 13 is formed by a radial extension. At this spring bearing 13, the already explained with reference to FIG. 1 spring 8 is supported. The opposite end of the spring 8 is supported on the housing side.
  • the groove 11 is inserted in the flattened region 12 of the Anlenkkolbens 7.
  • the flattened region 12 forms an area on the articulation piston 7 which runs parallel to the plane of the groove 11 and in particular parallel to the direction of movement represented by the arrow in FIG. 2.
  • the position of the plane is indicated in FIG. 2 by the dot-dash line 18.
  • the transmission element 10 which has a ball head 14 at its end engaging in the groove 11 end.
  • the diameter of the ball head 14 is approximately equal to the width of the groove 11.
  • the sensor 6 is adjusted by rotating a shaft 15.
  • an actuating element 9 is provided for transmitting a movement of the transmission element 10 on the shaft 15.
  • the actuating element 9 is rotatably connected to the shaft 15. In the illustrated embodiment, this is done via a flattened position on the shaft 15, wherein the shaft 15 engages in a corresponding geometry of the actuating element 9.
  • the actuating element 9 is rotatably mounted in a housing of the sensor 6. Eccentric to the axis of rotation of the actuating element 9, which coincides with the axis of rotation of the shaft 15, is in the actuating element
  • a movement of the actuating piston 4 causes a lateral deflection of the transmission element 10 to the direction of movement.
  • This lateral deflection leads to a rotation of the actuating element 9 about the axis of the shaft 15 of the sensor.
  • Trained as a rotary potentiometer sensor then generates a signal which of the respective Position of the Anlenkkolbens 7 corresponds. Since the Anlenkkolben 7 with the actuating element, in the present example, the adjusting piston 4, is fixedly connected and thus follows an axial movement of the actuating piston 4, a signal corresponding to the position of the actuating element is output by the sensor 6.
  • an electrical connection 17 is provided.
  • Fig. 3 is a section along the line III-III of Fig. 2 is shown. Matching elements are provided with identical reference numerals. Their full description is omitted to avoid repetition.
  • the Anschkolben 7 is shown enlarged again. It can be seen that the longitudinal axis 20 of the groove 11 encloses an angle ⁇ with a projection of the direction of movement into the plane of the groove 11. The size of the angle a determines the transmission ratio of the translation device. It can also be seen that a recess 21 is formed on the end oriented in the direction of the spring bearing 3. The recess 21 facilitates insertion of the ball-shaped end of the transmission element 10.
  • the Anschkolben 7 is in the Fig. 5 again shown in a perspective view.
  • the proposed device for detecting a pivoting angle is not limited to the illustrated embodiment with a rotary potentiometer.
  • sensors which require a linear movement to detect a position may also be provided. The direction of adjustment of such a sensor is then perpendicular to the
  • the distance of a mounting surface on which the sensor 6 is arranged to the axis of the actuating piston 4 remains independent of the selected gear ratio.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Reciprocating Pumps (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Actuator (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention concerne un dispositif pour l'enregistrement d'une cylindrée réglée d'une machine à piston hydrostatique (1). Le dispositif présente un élément de réglage (4) pour générer un mouvement de réglage et un capteur (6) pour l'enregistrement d'une position de l'élément de réglage (4). Un signal caractérisant la position de l'élément de réglage (4) est généré par le capteur (6). L'élément de réglage (4) coopère avec le capteur (6) au moyen d'un dispositif de transmission (5). Le dispositif de transmission (5) présente selon l'invention une rainure (11), qui s'étend le long d'un plan situé parallèlement au sens de déplacement de l'élément de réglage (4). Un axe longitudinal de la rainure (11) forme avec une projection du sens de déplacement dans le plan de la rainure (11) un angle a différent de 0. Un élément de transmission (10) s'engage dans la rainure (11) pour la transmission du déplacement de l'élément de réglage (4).
EP10708142A 2009-04-21 2010-03-11 Dispositif pour l'enregistrement d'une cylindrée réglée Withdrawn EP2422088A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009018298A DE102009018298A1 (de) 2009-04-21 2009-04-21 Vorrichtung zum Erfassen eines eingestellten Hubvolumens
PCT/EP2010/001514 WO2010121686A1 (fr) 2009-04-21 2010-03-11 Dispositif pour l'enregistrement d'une cylindrée réglée

Publications (1)

Publication Number Publication Date
EP2422088A1 true EP2422088A1 (fr) 2012-02-29

Family

ID=42288960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10708142A Withdrawn EP2422088A1 (fr) 2009-04-21 2010-03-11 Dispositif pour l'enregistrement d'une cylindrée réglée

Country Status (6)

Country Link
EP (1) EP2422088A1 (fr)
JP (1) JP2012524209A (fr)
KR (1) KR20120018119A (fr)
CN (1) CN102405350B (fr)
DE (1) DE102009018298A1 (fr)
WO (1) WO2010121686A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011113637A1 (de) 2011-09-16 2013-03-21 Robert Bosch Gmbh Hydrostatische Schrägachsenmaschine
GB2509100A (en) * 2012-12-20 2014-06-25 Eaton Ind Ip Gmbh & Co Kg Magnetic position sensor for swashplate control piston
DE102013220298B4 (de) 2013-10-08 2019-01-17 Danfoss Power Solutions Gmbh & Co. Ohg Vorrichtung zur Erfassung der Servokolbenposition in einer Hydraulikmaschine mittels eines Drehsensors
DE102015207260A1 (de) * 2014-05-22 2015-11-26 Robert Bosch Gmbh Verstelleinrichtung für eine hydrostatische Kolbenmaschine und hydrostatische Axialkolbenmaschine
DE102015205549B4 (de) * 2015-03-26 2019-01-03 Danfoss Power Solutions Gmbh & Co. Ohg Verfahren zur kalibrierung einer hydraulikmaschine und hydraulikmaschine mit verstellelement
DE102018218548A1 (de) 2018-10-30 2020-04-30 Robert Bosch Gmbh Hydrostatische Kolbenmaschine

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
JPS5862501A (ja) * 1981-10-09 1983-04-14 Toshiba Corp 溝の傾き角度測定装置
DE3627375A1 (de) * 1986-08-12 1988-02-18 Man Nutzfahrzeuge Gmbh Verstellvorrichtung fuer einen axialkolben-schraegachsenhydrostaten
JP2541397Y2 (ja) * 1991-03-22 1997-07-16 内田油圧機器工業株式会社 斜軸形ポンプ、モータの傾転位置検出装置
DE4239145C1 (de) * 1992-11-20 1994-03-17 Hydromatik Gmbh Meßeinrichtung zum Erfassen der Verdrängungsvolumen-Einstellung von Axialkolbenmaschinen
DE19819960B4 (de) * 1998-05-05 2005-03-03 Robert Bosch Gmbh Axialkolbenmaschine mit integriertem Schwenkwegmeßsystem
DE10119236C1 (de) 2001-04-19 2002-12-12 Brueninghaus Hydromatik Gmbh Axialkolbenmaschine in Schrägachsen-Bauweise, mit einem Schwenkwinkel-Sensor
JP4563200B2 (ja) * 2005-01-28 2010-10-13 株式会社小松製作所 斜軸式可変容量型ポンプ・モータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010121686A1 *

Also Published As

Publication number Publication date
CN102405350A (zh) 2012-04-04
CN102405350B (zh) 2014-10-15
KR20120018119A (ko) 2012-02-29
WO2010121686A1 (fr) 2010-10-28
DE102009018298A1 (de) 2010-10-28
JP2012524209A (ja) 2012-10-11

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