EP1960666B1 - Dispositif et procede de surveillance de l'etat d'unites de refoulement hydrostatique - Google Patents

Dispositif et procede de surveillance de l'etat d'unites de refoulement hydrostatique Download PDF

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Publication number
EP1960666B1
EP1960666B1 EP06829533A EP06829533A EP1960666B1 EP 1960666 B1 EP1960666 B1 EP 1960666B1 EP 06829533 A EP06829533 A EP 06829533A EP 06829533 A EP06829533 A EP 06829533A EP 1960666 B1 EP1960666 B1 EP 1960666B1
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Prior art keywords
unit
data
state monitoring
monitoring data
monitoring according
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EP06829533A
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German (de)
English (en)
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EP1960666A1 (fr
Inventor
Thomas Kunze
Wilfried Eichner
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Bosch Rexroth AG
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Bosch Rexroth AG
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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
    • F04B51/00—Testing machines, pumps, or pumping installations
    • 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
    • F04B1/34—Control not provided for in groups F04B1/02, F04B1/03, F04B1/06 or F04B1/26
    • 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
    • F04B2201/08—Cylinder or housing parameters
    • F04B2201/0802—Vibration
    • 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
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/80—Diagnostics

Definitions

  • the invention relates to a device and a method for condition monitoring in hydrostatic displacement units.
  • the prior art discloses a device and a method for diagnosing faults on pumps.
  • a frequency analysis preferably a discrete Fourier transform
  • the pump which was obtained by the frequency analysis, compared with a reference amplitude and from this comparison, a failure of the pump is determined.
  • the characteristic frequency of the pump is preferably the natural frequency of the pump drive.
  • a disadvantage of the DE 103 34 817 A1 Prior art is that only the pressure of a pump is analyzed exclusively in the frequency domain. If the pump threatens to fail due to increased contamination of the hydraulic fluid, this can be done with the in the DE 103 34 817 A1 described device can not be directly diagnosed, but it can be drawn only from an increase in pressure in the hydraulic circuit conclusions, since the device has no sensor that determines, for example, the concentration of dirt particles in the hydraulic fluid.
  • Another disadvantage is that any mechanical instabilities that are caused by a high speed of the pump and transferred to the pump housing, can not be detected directly because no corresponding sensors are mounted on the pump housing.
  • event-driven maintenance of such equipment i. damage-related repair and cycle-oriented maintenance related to fixed-interval maintenance are disadvantageous as they result in longer downtime and hence higher process costs.
  • the present invention has the object to overcome the disadvantages of the prior art and to provide an apparatus and method for error detection with extended functionality for condition-based maintenance in hydrodynamically operated machines.
  • Claim 1 relates to a device for condition monitoring in hydrostatic displacement units, in particular when operated as a pump or as a motor axial piston machines.
  • the device according to the invention has a detection unit with a multiplicity of sensors mounted on the hydrostatic displacement unit for acquiring monitoring data and operating data, wherein the detection unit is connected to an evaluation unit which has both a device for analyzing the monitoring data in the frequency domain and a device for analyzing the monitoring data in the time domain.
  • an evaluation unit To the evaluation unit is a diagnostic unit connected to an output unit.
  • Claim 18 relates to a method for condition monitoring by means of the device according to the invention in hydrostatic displacement units, in particular operated as a pump or motor axial piston machines, wherein a plurality of sensors are attached to the hydrostatic displacement unit and the monitoring data and operating data are detected in a detection unit. Subsequently, the monitoring data in the evaluation unit are analyzed both in the frequency domain and in the time domain so that a signal is then output by the output unit connected to the diagnostic unit as a function of the result of the preceding analysis.
  • the evaluation unit of the state monitoring device comprises both a device for analyzing the monitoring data in the frequency domain and a device for analyzing the monitoring data in the time domain.
  • the natural frequencies of the entire system can be determined and stored with simple means.
  • a large number of sensors are mounted on the hydrostatic unit, with which both monitoring data and operating data such as pressure in a high-pressure line and / or pressure in a low pressure line and / or a swivel angle of a swash plate and / or a rotational speed of a cylinder drum are metrologically detected to be subsequently analyzed in the evaluation unit with respect to their context.
  • the monitoring data such as surface vibrations and / or leakage oil and hydraulic fluid temperature and / or hydraulic fluid state
  • the determined operating data characterize the overall state of the machine to be monitored, and thus indicates a necessary maintenance before their due date so that any necessary downtime can be well-agreed with the production process.
  • the monitoring data in the evaluation unit can also be analyzed in the time domain so that a trend behavior of the machine state can be determined based on a quotient of a measured actual value to a specified threshold value or of a change of the actual value to a specified threshold value.
  • At least three acceleration sensors are mounted on the housing of the hydrostatic displacement unit, so that surface vibrations of the housing can be detected in three directions which are perpendicular to each other in pairs.
  • an output unit is connected to the diagnostic unit defining the machine state, in which a pre-alarm or a main alarm with respect to the diagnosed machine state is output.
  • the in the Fig. 1 shown axial piston machine 3 is designed in swash plate design with adjustable displacement volume and a current direction and includes in a known manner as essential components a substantially hollow cylindrical housing 15 with an end open end (lower end in Fig. 1 ), a housing 15 fixed to the open end occlusive housing cover 23, also referred to as a lifting disc swash plate 19, a control plate 24, a shaft 25 and a cylinder drum 16.
  • a suitable sensor which is not shown in this illustration, is a Swivel angle of the swash plate 19 is determined and transmitted to a detection unit 4 of the device 1 according to the invention for condition monitoring in hydrostatic displacement units 2.
  • the shaft 25 is rotatably mounted in the housing 15 and engages centered through the cylinder drum 16 therethrough.
  • the cylinder drum 16 is rotatable with the shaft 25, but axially movable and thereby detachably connected by the shaft.
  • the wave is on both sides of the Cylinder drum 16 mounted in each case a rolling bearing.
  • a speed sensor is mounted, which is not visible in this illustration and determines the instantaneous speed of the shaft 25 and forwards to the detection unit 4.
  • each cylinder bore 17 is a piston 18 each axially. used movably.
  • the pistons 18 each have on the side facing away from the housing cover 23 a spherical head 26 which cooperates with a corresponding recess of a shoe 27 to a hinge connection.
  • the piston 18 is supported on the swash plate 19.
  • the pistons 18 Upon rotation of the cylinder drum 16, the pistons 18 therefore execute a stroke movement in the cylinder bores 17.
  • the height of the stroke is determined by the position of the swash plate 19, wherein the position of the swash plate 19 in the embodiment by an adjusting device 28 is adjustable.
  • the section shown in the Fig. 1 The axial piston 3 not recognizable control openings of the control plate 24 are on their side facing away from the cylinder drum 16 side in permanent contact with at least one high-pressure or low-pressure connection, not shown in this figure.
  • the cylinder bores 17 are open via openings to the end face of the cylinder drum 16.
  • the openings sweep with a rotation of the cylinder drum 4, a sealing environment of the control plate 24 and are connected during a rotation alternately with the unrecognizable control openings.
  • the axial piston machine 3 is provided, for example, for operation with oil as a hydraulic fluid.
  • the cylinder drum 16 is rotated together with the piston 18 in rotation. If the swashplate 19 is pivoted into an inclined position relative to the cylinder drum 16 by actuation of the adjusting device 28, all the pistons 18 perform strokes.
  • each piston 18 passes through a suction and a compression stroke, with corresponding oil flows are generated, their supply and discharge through the openings, the unrecognizable control openings of the control plate 24 and the high pressure or low pressure connection, not shown respectively.
  • Fig. 2 shows a schematic representation of an inventive device 1 for condition monitoring of a hydrostatic displacer unit 2, whose construction is substantially the in Fig. 1 shown axial piston machine 3 corresponds.
  • the device 1 for condition monitoring in the case of hydrostatic displacement units 2, in particular in the case of axial piston machines 3 operated as pump or motor, comprises a detection unit 4 with a multiplicity of sensors 5 mounted on the hydrostatic displacement unit 2. These sensors 5 capture both monitoring data 6 and operating data 7
  • the device 1 according to the invention has an evaluation unit 8 with a device 9 for analyzing the monitoring data 6 in the frequency domain and a device 10 for analyzing the monitoring data 6 in the time domain.
  • the evaluation unit 8 is adjoined by a diagnostic unit 11 having an output unit 13, wherein the diagnostic unit 11, as in FIG Fig. 3 can also be integrated into the evaluation unit 8.
  • the monitoring data 6 include surface vibrations and / or leakage oil and hydraulic fluid temperature and / or hydraulic fluid condition, in particular degree of contamination, wherein for detecting the surface vibrations at least three different locations of the housing 15 of the hydrostatic displacement unit 2 at least three with the detection unit 4 connected acceleration sensors 14 are mounted.
  • the directions of the acceleration or vibration to be measured by the three acceleration sensors 14 are in each case perpendicular to each other in pairs.
  • the device 9 for analyzing the monitoring data 6 in the frequency domain comprises a module which forms the Fourier transform of the acquired monitoring data 6, in particular the surface vibrations.
  • the leakage oil temperature of the hydraulic fluid is detected by a sensor 5, the z. B. in the pump housing 15 or in a connected to the pump housing 15 leak oil line is detected and transmitted via the detection unit 4 to the evaluation unit 8 of the device 1 according to the invention, where this value is stored with other monitoring data 6.
  • the means 10 for analyzing the monitoring data 6 in the time domain has a module for evaluating a trend behavior using a quotient actual value / threshold value and a quotient changing the actual value to a threshold value, wherein the actual value relates both to monitoring data 6 and to operating data 7.
  • a combination of monitoring data 6 with operating data 7 is provided, wherein the threshold values for the monitoring data 6 dependent on the operating data 7 can be defined.
  • the output unit 13 connected to the diagnosis unit 11 For example, a pre-alarm and a main alarm are provided as alarms related to a machine condition, a pre-alarm indicating a pending next service, and a main alarm indicating a machine condition critical to continued operation and additionally capable of actuating the emergency switch.
  • Fig. 3 shows a block diagram for explaining the method according to the invention for condition monitoring.
  • the condition monitoring method assumes that a plurality of sensors 5 are attached to the hydrostatic displacement unit 2.
  • the mounted sensors 5 comprise acceleration sensors 14, dirt switches, temperature sensors in the tank and in the oil leakage channel, oil sensors, pressure sensors in the high-pressure line 21 and in the low-pressure line 20, a speed sensor attached to the shaft 25 and a sensor 5 for determining the swivel angle.
  • These sensors 5 acquire the relevant data and transmit it as monitoring data 6 and operating data 7 to a detection unit 4.
  • the monitoring data 6 relates to surface vibrations, to a particle concentration in the hydraulic fluid, to the temperatures in the tank and in the leak oil line, as well as to viscosity values, water content, dielectric values and pressure values of the hydraulic fluid used in the hydraulic circuit.
  • the operating data 7 relate to the pressure in a high-pressure line 21 and / or the pressure in a low-pressure line 20 and / or the swivel angle of a swash plate 19 and / or the rotational speed of a cylinder drum 16.
  • the monitoring data 6 in both the frequency domain and in the Time domain analyzed. After the data analysis, a signal is outputted from the output unit 13 connected to the diagnosis unit 11 depending on the result of the previous data analysis.
  • the monitoring data 6 acquired in the evaluation unit 8, in particular the surface vibrations measured by means of at least three acceleration sensors 14 mounted on the housing of the hydrostatic displacement unit 2, are subjected to a Fourier transformation.
  • the natural frequencies and / or error frequencies of the entire system are determined.
  • a critical operating state of the displacer unit 2 can be determined and reported via a suitable visual or audible alarm signal.
  • the quotient of an actual value and a threshold value is formed.
  • concentration of dirt particles in the hydraulic circuit is determined at regular intervals and set in relation to a predetermined and stored in the evaluation unit 8 limit concentration.
  • the result of this quotient is constantly monitored in the diagnostic unit 11, so that when approaching the value one, a suitable alarm is output.
  • a quotient of the change in the actual value and a previously defined threshold value is formed in the device 10 for analyzing the monitoring data 6 in the time domain. For example, a change in the temperature in the tank is detected at regular intervals and set in relation to a predetermined temperature. A sudden increase in this quotient is then an indication of a changed trend behavior of the monitored measurement parameter, so that then an alarm is output, after in the diagnostic unit 11 a Trend behavior of the monitoring data was evaluated based on the quotients formed in the evaluation unit in the time domain.
  • the invention is not limited to axial piston machines 3 in a swashplate construction and is also applicable, for example, to axial piston machines 3 in bent-axis design or other hydrostatic displacement units 2 with a closed or open hydraulic circuit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

L'invention concerne un dispositif (1) de surveillance de l'état d'unités de refoulement hydrostatique (2), notamment de machines à piston axial (3) fonctionnant comme une pompe ou un moteur. Le dispositif (1) comprend une unité de détection (4) comprenant une pluralité de capteurs (5) montés sur l'unité de refoulement hydrostatique (2) et destinés à la détection de données de surveillance (6) et de données de fonctionnement (7), ainsi qu'une unité d'évaluation (8) qui présente un équipement (9) destiné à l'analyse des données de surveillance dans le domaine fréquentiel et un équipement (10) destiné à l'analyse des données de surveillance dans le domaine temporel. Une unité de diagnostic (11) dotée d'une unité de sortie (13) se raccordent à l'unité d'évaluation (8).

Claims (24)

  1. Système (1) de surveillance d'états d'unités de refoulement hydrostatiques (2), notamment de machines à piston axial (3) fonctionnant comme pompes ou moteurs,
    avec une unité de saisie (4) comportant des capteurs (5) disposés sur l'unité de refoulement hydrostatique (2) et destinés à la saisie de données,
    avec une unité d'évaluation (8) comportant un dispositif (9) destiné à analyser les données de surveillance (6) dans le domaine des fréquences,
    et avec une unité de diagnostic (11), à laquelle est reliée une unité de sortie (13),
    caractérisé
    en ce que l'unité d'évaluation (8) comporte en outre un dispositif (10) destiné à analyser les données de surveillance (6) dans le domaine temporel, et
    en ce que les données saisies se composent de données de surveillance (6) et de données de fonctionnement (7), les données de fonctionnement (7) sont analysées en unité d'évaluation (8) dans le domaine temporel, et les données de surveillance (6) en unité d'évaluation (8) dans le domaine temporel ainsi que dans le domaine des fréquences,
    en ce que les données de surveillance comprennent des vibrations de surface et/ou la température de l'huile de fuite et/ou la température du fluide hydraulique et/ou l'état du fluide hydraulique et/ou le degré d'encrassement, et/ou se rapportent à des vibrations de surface et/ou à une concentration de particules dans le fluide hydraulique et/ou aux températures dans le réservoir et/ou dans la conduite d'huile de fuite et/ou des valeurs de viscosité et/ou la teneur en eau et/ou des valeurs diélectriques et/ou des valeurs de pression du fluide hydraulique utilisé dans le circuit d'huile hydraulique, et
    en ce que les données de fonctionnement se rapportent à la pression dans une conduite haute pression (21) et/ou la pression dans une conduite basse pression (20) et/ou l'angle de pivotement d'un disque incliné (19) et/ou la vitesse de rotation d'un tambour cylindrique (16).
  2. Système de surveillance d'état selon la revendication 1,
    caractérisé
    en ce que le dispositif (9) d'analyse des données de surveillance dans le domaine des fréquences comporte un module pour la transformation de Fourier des données de surveillance (6) saisies.
  3. Système de surveillance d'état selon la revendication 1 ou la revendication 2,
    caractérisé
    en ce que le dispositif (10) d'analyse des données de surveillance dans le domaine temporel comporte un module destiné à évaluer un comportement tendanciel sur la base d'un quotient entre la valeur effective et une valeur seuil et/ou d'un quotient entre la variation de la valeur effective et une valeur seuil.
  4. Système de surveillance d'état selon l'une des revendications 1 à 3,
    caractérisé
    en ce qu'au moins trois capteurs d'accélération (14) reliés à l'unité de saisie (4) sont disposés sur un carter (15) de l'unité de refoulement hydrostatique (2).
  5. Système de surveillance d'état selon la revendication 4,
    caractérisé
    en ce que les capteurs d'accélération (14) sont disposés à trois emplacements différents du carter (15) de l'unité de refoulement hydrostatique (2).
  6. Système de surveillance d'état selon la revendication 4 ou la revendication 5,
    caractérisé
    en ce que les directions des accélérations ou des vibrations à mesurer par les trois capteurs d'accélération (14) sont perpendiculaires l'une à l'autre par paires.
  7. Système de surveillance d'état selon l'une des revendications 1 à 6,
    caractérisé
    en ce que l'unité de refoulement hydrostatique (2) présente des alésages cylindriques (17) ménagés dans un tambour cylindrique (16), avec des pistons (18) mobiles axialement axialement dans les alésages cylindriques (17), chaque piston (18) étant appuyé contre un disque incliné (19) réglable, et en ce que les données de fonctionnement (7) se rapportent à une pression dans une conduite haute pression (21) et/ou une pression dans une conduite basse pression (20) de l'unité de refoulement hydrostatique (2), un angle de pivotement du disque incliné (19) et/ou une vitesse de rotation du tambour cylindrique (16).
  8. Système de surveillance d'état selon l'une des revendications 1 à 7,
    caractérisé
    en ce que les données de surveillance (6) sont recueillies par les capteurs (5) prévus aux emplacements correspondants et transmises à l'unité de saisie (4) du système (1) de surveillance d'état.
  9. Système de surveillance d'état selon la revendication 8,
    caractérisé
    en ce que les données de surveillance (6) incluent les vibrations mesurées par trois capteurs d'accélération (14).
  10. Système de surveillance d'état selon la revendication 8 ou la revendication 9,
    caractérisé
    en ce que les données de surveillance (6) incluent la température déterminée au moyen d'un capteur (5) dans une conduite d'huile de fuite (22).
  11. Système de surveillance d'état selon l'une des revendications 8 à 10,
    caractérisé
    en ce que les données de surveillance (6) incluent les valeurs de température, valeurs de viscosité et valeurs de pression déterminées au moyen d'un capteur (5) disposé dans un fluide hydraulique.
  12. Système de surveillance d'état selon l'une des revendications 8 à 11,
    caractérisé
    en ce que les données de surveillance (6) incluent les valeurs de température déterminées au moyen d'un capteur de température disposé dans un réservoir pour le fluide hydraulique.
  13. Système de surveillance d'état selon l'une des revendications 8 à 12,
    caractérisé
    en ce que les données de surveillance (6) incluent les degrés d'encrassement déterminés au moyen d'un capteur de particules disposé dans le réservoir pour le fluide hydraulique et/ou au moyen d'un capteur de particules disposé dans la conduite d'huile de fuite (22).
  14. Système de surveillance d'état selon l'une des revendications 1 à 13,
    caractérisé
    en ce qu'un chaînage de données de surveillance avec des données de fonctionnement, ainsi que des valeurs seuil définissables pour les données de surveillance (6) dépendantes des données de fonctionnement (7) sont présentés dans l'unité de diagnostic (11).
  15. Système de surveillance d'état selon l'une des revendications 1 à 14,
    caractérisé
    en ce qu'une pré-alarme et une alarme principale sont prévues dans l'unité de sortie (13) reliée à l'unité de diagnostic (11), en tant que signaux d'alarme relatifs à un état de machine.
  16. Système de surveillance d'état selon la revendication 15,
    caractérisé
    en ce que les signaux d'alarme de l'unité de sortie (13) sont des signaux acoustiques.
  17. Système de surveillance d'état selon la revendication 15,
    caractérisé
    en ce que les signaux d'alarme de l'unité de sortie (13) sont des signaux optiques.
  18. Procédé de surveillance au moyen d'un système (1) d'états d'unités de refoulement hydrostatiques (2), notamment de machines à piston axial (3) fonctionnant comme pompes ou moteurs, avec une unité de saisie (4) comportant des capteurs (5) disposés sur l'unité de refoulement hydrostatique (2) et destinés à la saisie de données, avec une unité d'évaluation (8) comportant un dispositif (9) destiné à analyser les données de surveillance (6) dans le domaine des fréquences et un dispositif (10) destiné à analyser les données de surveillance (6) dans le domaine temporel, et avec une unité de diagnostic (11), à laquelle est reliée une unité de sortie (13),
    où au moins un capteur (5) est disposé sur l'unité de refoulement hydrostatique (2), lequel saisit les données dans une unité de saisie (4),
    où un signal est émis par l'unité de sortie (13) reliée à l'unité de diagnostic (11) en fonction du résultat d'une analyse antérieure,
    caractérisé
    en ce que les données saisies se composent de données de surveillance (6) et de données de fonctionnement (7), les données de fonctionnement (7) sont analysées en unité d'évaluation (8) dans le domaine temporel, et les données de surveillance (6) en unité d'évaluation (8) dans le domaine temporel ainsi que dans le domaine des fréquences,
    en ce que les données de surveillance comprennent des vibrations de surface et/ou la température de l'huile de fuite et/ou la température du fluide hydraulique et/ou l'état du fluide hydraulique et/ou le degré d'encrassement, et/ou se rapportent à des vibrations de surface et/ou à une concentration de particules dans le fluide hydraulique et/ou aux températures dans le réservoir et/ou dans la conduite d'huile de fuite et/ou des valeurs de viscosité et/ou la teneur en eau et/ou des valeurs diélectriques et/ou des valeurs de pression du fluide hydraulique utilisé dans le circuit d'huile hydraulique, et
    en ce que les données de fonctionnement se rapportent à la pression dans une conduite haute pression (21) et/ou la pression dans une conduite basse pression (20) et/ou l'angle de pivotement d'un disque incliné (19) et/ou la vitesse de rotation d'un tambour cylindrique (16).
  19. Procédé de surveillance d'état selon la revendication 18,
    caractérisé
    en ce que les capteurs (5) saisissent des données de surveillance (6) telles que vibrations de surface et/ou température d'huile de fuite et de fluide hydraulique et/ou état de fluide hydraulique, en particulier degré d'encrassement.
  20. Procédé de surveillance d'état selon la revendication 18 ou la revendication 19,
    caractérisé
    en ce que les données de surveillance (6) saisies, en particulier les vibrations de surface mesurées au moyen d'au moins trois capteurs d'accélération (14), sont soumises à une transformation de Fourier dans l'unité d'évaluation (8).
  21. Procédé de surveillance d'état selon l'une des revendications 18 à 20,
    caractérisé
    en ce que les capteurs (5) saisissent des données de fonctionnement (7) telles que pression dans une conduite haute pression (20) et/ou pression dans une conduite basse pression (21) et/ou un angle de pivotement d'un disque incliné (19) et/ou une vitesse de rotation d'un tambour cylindrique (16).
  22. Procédé de surveillance d'état selon l'une des revendications 18 à 21,
    caractérisé
    en ce que le quotient entre une valeur effective et une valeur seuil définie est formé dans le dispositif (10) d'analyse des données de surveillance (6) dans le domaine temporel et/ou le domaine des fréquences.
  23. Procédé de surveillance d'état selon l'une des revendications 18 à 21,
    caractérisé
    en ce que le quotient entre une variation de la valeur effective et une valeur seuil définie est formé dans le dispositif (10) d'analyse des données de surveillance (6) dans le domaine temporel et/ou le domaine des fréquences.
  24. Procédé de surveillance d'état selon la revendication 22 ou la revendication 23,
    caractérisé
    en ce qu'un comportement tendanciel des données de surveillance (6) est évalué dans le domaine temporel et/ou le domaine des fréquences en unité de diagnostic (11), sur la base des quotients formés dans l'unité d'évaluation (8).
EP06829533A 2005-12-13 2006-12-12 Dispositif et procede de surveillance de l'etat d'unites de refoulement hydrostatique Active EP1960666B1 (fr)

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DE102005059564A DE102005059564A1 (de) 2005-12-13 2005-12-13 Vorrichtung und Verfahren zur Zustandsüberwachung bei hydrostatischen Verdrängereinheiten
PCT/EP2006/011952 WO2007068448A1 (fr) 2005-12-13 2006-12-12 Dispositif et procede de surveillance de l'etat d'unites de refoulement hydrostatique

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DE102015214162A1 (de) 2015-07-27 2017-02-02 Robert Bosch Gmbh Vorrichtung und Verfahren zur Überwachung eines Schwenklagers einer Axialkolbenmaschine
EP4261413A1 (fr) 2022-04-16 2023-10-18 Hydac Fluidtechnik GmbH Dispositif et procédé de détermination d'un état, en particulier d'un état d'usure, d'une unité de déplacement

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DE102008035954A1 (de) 2008-07-31 2010-02-04 Beckhoff Automation Gmbh Verfahren und Vorrichtung zum Überwachen einer Verdrängermaschine
DE102010033344A1 (de) * 2010-08-04 2012-02-09 Bucyrus Hex Gmbh Verfahren zur Überwachung von Antriebskomponenten eines Großhydraulikbaggers
US8437922B2 (en) * 2010-12-14 2013-05-07 Caterpillar Inc. Systems and methods for detection of piston pump failures on mobile machines
DE102011120686A1 (de) * 2011-12-09 2013-06-13 Daimler Ag Verfahren zum Überwachen einer Pumpe
DE102012021498A1 (de) * 2012-11-02 2014-05-08 Robert Bosch Gmbh Verstelleinrichtung für eine hydrostatische Verdrängereinheit
DE102013205261A1 (de) 2013-03-26 2014-10-02 Robert Bosch Gmbh Sensoranordnung für eine hydraulische Verdrängereinheit
DE102013211345B4 (de) 2013-06-18 2022-12-01 Robert Bosch Gmbh Verfahren zur Zustandsüberwachung an Verdrängereinheiten
JP6177192B2 (ja) * 2014-06-03 2017-08-09 三菱重工業株式会社 累積損傷度評価システム、再生エネルギー型発電装置、累積損傷度評価方法及び油圧機械の制御方法
JP6643393B2 (ja) * 2018-05-01 2020-02-12 Ｋｙｂ株式会社 流体漏れ検出システム及び流体圧システム
AT521016B1 (de) 2018-08-24 2019-10-15 Engel Austria Gmbh Verfahren und Vorrichtung zur Zustandsüberwachung einer Hydraulikpumpe
DE102018221585A1 (de) * 2018-12-13 2020-06-18 Robert Bosch Gmbh Verfahren zum Verarbeiten von Mess- und Betriebsdaten einer Maschinenkomponente
MX2022001000A (es) * 2019-07-26 2022-05-24 Fluid Power Ai Llc Sistema y metodo para evaluar sucesos de sistema hidraulico y ejecutar respuestas.

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DE102015214162A1 (de) 2015-07-27 2017-02-02 Robert Bosch Gmbh Vorrichtung und Verfahren zur Überwachung eines Schwenklagers einer Axialkolbenmaschine
EP4261413A1 (fr) 2022-04-16 2023-10-18 Hydac Fluidtechnik GmbH Dispositif et procédé de détermination d'un état, en particulier d'un état d'usure, d'une unité de déplacement
DE102022001315A1 (de) 2022-04-16 2023-10-19 Hydac Fluidtechnik Gmbh Vorrichtung und Verfahren zum Ermitteln eines Zustandes, insbesondere eines Verschleißzustandes, einer Verdrängereinheit

Also Published As

Publication number Publication date
DE102005059564A1 (de) 2007-06-14
WO2007068448A1 (fr) 2007-06-21
US20090229456A1 (en) 2009-09-17
US7860683B2 (en) 2010-12-28
EP1960666A1 (fr) 2008-08-27

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