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EP4335981B1 - Machine de construction pourvu de système hydraulique - Google Patents

Machine de construction pourvu de système hydraulique Download PDF

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Publication number
EP4335981B1
EP4335981B1 EP22194607.2A EP22194607A EP4335981B1 EP 4335981 B1 EP4335981 B1 EP 4335981B1 EP 22194607 A EP22194607 A EP 22194607A EP 4335981 B1 EP4335981 B1 EP 4335981B1
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EP
European Patent Office
Prior art keywords
hydraulic
control unit
construction machine
main control
machine according
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.)
Active
Application number
EP22194607.2A
Other languages
German (de)
English (en)
Other versions
EP4335981A1 (fr
Inventor
Martin Dr.-Ing. Inderelst
Stefan Pollmeier
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.)
XCMG European Research Center GmbH
Original Assignee
XCMG European Research Center 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 XCMG European Research Center GmbH filed Critical XCMG European Research Center GmbH
Priority to EP22194607.2A priority Critical patent/EP4335981B1/fr
Priority to US18/242,108 priority patent/US12221770B2/en
Publication of EP4335981A1 publication Critical patent/EP4335981A1/fr
Application granted granted Critical
Publication of EP4335981B1 publication Critical patent/EP4335981B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
    • E02F3/434—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like providing automatic sequences of movements, e.g. automatic dumping or loading, automatic return-to-dig
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/435—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like
    • E02F3/437—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like providing automatic sequences of movements, e.g. linear excavation, keeping dipper angle constant
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20584—Combinations of pumps with high and low capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20592—Combinations of pumps for supplying high and low pressure

Definitions

  • the invention relates to a construction machine with a hydraulic system with at least one hydraulic control, which comprises at least one joystick, at least one hydraulic pressure source and two hydraulic drives, wherein the pressure level of each hydraulic drive can be different depending on the respectively selected operating point of the drive, wherein each hydraulic drive is connected to each pressure source by means of a hydraulic connection, in each of which a main control valve is provided, which can be controlled by the one joystick or at least one of the joysticks, wherein the construction machine comprises a plurality of components that can be moved at least relative to one another, each of which is assigned a hydraulic drive for moving this component.
  • US 2022/010523 A1 reveals, for example, such a construction machine.
  • the object of the invention is to avoid the aforementioned disadvantages and to provide an improved construction machine with which an improved possibility to carry out work processes, especially recurring work processes.
  • At least one hydraulic control comprises at least one electrically actuated priority valve designed as a proportional valve, which is assigned to a drive and provided in its hydraulic connection, wherein each priority valve is electrically connected to the electronic control unit and can be controlled to effect additional hydraulic resistance
  • the hydraulic control further comprises sensors provided on the movable components for the indirect or direct detection of their respective position, which are each connected to the control unit in order to pass on the detected sensor values to the latter, wherein on the one hand at least one trajectory can be stored in the control unit and on the other hand a control mode can be activated in which each priority valve can be controlled by the control unit using the values currently detected by the sensors when the at least one joystick is actuated in such a way that the stored trajectory is driven by corresponding control of the drives.
  • At least one priority valve is actuated as required to achieve the stored trajectory, so that either the hydraulic drive with the higher load is prioritized over the hydraulic drive with the lower load or, conversely, the hydraulic drive with the lower load is prioritized over the hydraulic drive with the higher load. Consequently, the drive with the lower load is subjected to more resistance, so that it is actually operated less than is actually specified by the operator of the construction machine by operating the joystick.
  • At least two hydraulic pressure sources can be provided, wherein each hydraulic drive is connected to each pressure source by means of a hydraulic connection, and at least two hydraulic pressure sources have different pressure levels.
  • the priority valve in the corresponding hydraulic connection or the priority valves in the corresponding hydraulic connections can be arranged between the corresponding hydraulic pressure source and the main control valve connected thereto, so that the respective priority valve is provided in front of the corresponding main control valve as seen from the pressure source.
  • the main control valves are each provided in the connection of a single pressure source with a single hydraulic drive.
  • a branch can initially be provided for each pressure source, from which two separate connections, each with a main control valve, lead to the two hydraulic drives.
  • the priority valve or priority valves are preferably provided between the branch and the corresponding main control valve.
  • one of the two separate connections from each pressure source after the branch can be provided with a priority valve and lead to one drive, whereas the other of the two separate connections is not provided with a priority valve and leads to the other drive.
  • the two separate connections of the two pressure sources, each provided with a priority valve can either lead to the same drive or to different drives.
  • At least one main control valve can be designed as a hydraulically controlled main control valve, preferably each main control valve can be designed as a hydraulically controlled main control valve, and the corresponding joystick provided for the hydraulic control can be designed as an at least partially hydraulic joystick, preferably as a fully hydraulic joystick, with which at least one of the existing hydraulically controlled main control valves, preferably each hydraulically controlled main control valve, can be controlled.
  • the control of the main control valves is still possible compared to a hydraulic circuit with an electric joystick and electrically operated main control valves even if the electrical components fail.
  • each hydraulic drive can be assigned at least one electrical motion sensor for detecting movements of the hydraulic drive in question, so that a corresponding control and also regulation of the priority valves in real time is possible in accordance with the respective movement of the hydraulic drive in question, which can also be dependent on external circumstances such as load, resistance, etc.
  • each hydraulic drive can be assigned at least one electrical motion sensor for detecting movements of the relevant component that can be moved by the respective hydraulic drive.
  • At least one hydraulic control system may also be designed to have at least one sensor for detecting the position of a movable component of the construction machine for the indirect or direct detection of the absolute position in space.
  • At least one hydraulic control system may have at least one sensor for detecting the position of a movable component of the construction machine for the Detecting the relative position of this component in relation to the construction machine and/or another component of the construction machine.
  • At least one hydraulic drive preferably each hydraulic drive, can be assigned a pressure sensor connected to the control unit, which detects the hydraulic pressure acting on this hydraulic drive and transmits it to the control unit.
  • At least one main control valve in at least one hydraulic control can be designed as an electrically controlled main control valve, preferably each main control valve can be designed as an electrically controlled main control valve, wherein at least one joystick is designed as an at least partially electric, preferably as a fully electric joystick, for controlling at least one, preferably each, existing electrically controlled main control valve.
  • this can be formed by two partial connections in the partial area after the main control valve in order to be able to effect different directions of movement of the drive.
  • the construction machine can be designed as a hydraulic excavator and comprise an undercarriage, an upper carriage rotatably arranged thereon and a boom arm pivotably arranged on the upper carriage.
  • the boom arm can be designed as an articulated arm with a first arm segment pivotably arranged on the superstructure and with a second arm segment pivotably arranged on the first arm segment, wherein a bucket can be pivotably arranged on the second arm segment.
  • the construction machine can be designed such that, with at least one hydraulic control, the two drives can produce different maximum forces and the hydraulic drive with the higher maximum force is assigned to the first arm segment for its pivoting, wherein the hydraulic drive with the lower maximum force is assigned to the second arm segment for its pivoting relative to the first arm segment.
  • At least one hydraulic drive can be designed as at least one hydraulic cylinder, preferably as several hydraulic cylinders provided in parallel, preferably each hydraulic drive can be designed as at least one hydraulic cylinder, preferably as several hydraulic cylinders provided in parallel.
  • control mode can be activated at least manually in at least one hydraulic control.
  • sensor values can be stored in the control unit, for example in the form of a sensor value combination and/or a sensor value sequence, for which the control mode is to be activated, and an algorithm for evaluating the sensor values currently recorded by the sensors and, if they correspond with the sensor values and/or sensor value combination(s) and/or sensor value sequence(s) stored in the control unit, for automatically activating the control mode can be integrated into the control unit.
  • an automatic mode can be activated in at least one hydraulic control in the control unit, in which the algorithm for automatically activating the control mode is active.
  • Fig. 1 relates to a construction machine not shown in the drawing with a hydraulic system with a hydraulic control 1, which comprises a joystick not shown in the drawing, a hydraulic pressure source 2 and two hydraulic drives 3, which are provided for moving components of the construction machine that are at least movable relative to one another and are each assigned to such a component.
  • a hydraulic control 1 which comprises a joystick not shown in the drawing, a hydraulic pressure source 2 and two hydraulic drives 3, which are provided for moving components of the construction machine that are at least movable relative to one another and are each assigned to such a component.
  • Each hydraulic drive 3 is connected to the pressure source 2 by means of a hydraulic connection 4.
  • a main control valve 6 is provided, which can be controlled by the joystick.
  • the hydraulic drives 3 shown are designed either as a single hydraulic cylinder 5 or as two hydraulic cylinders 5 provided in parallel.
  • an electrically actuated priority valve 7 designed as a proportional valve is included.
  • the priority valve 7 is assigned to one of the two drives 3 and is provided in its hydraulic connection 4, namely between the hydraulic pressure source 2 and the main control valve 6 connected to it, so that the priority valve 7 is provided in front of the corresponding main control valve 6 when viewed from the pressure source 2.
  • the priority valve 7 is assigned to the drive 3 which is designed as a single hydraulic cylinder 5.
  • the main control valves 6 are each provided in the connection 4 of the pressure source 2 with a single hydraulic drive 3. If - as in Fig. 1 shown - at the pressure source 2 a branch 8 is initially provided, from then on two separate connections 4, each with a main control valve 6, lead to one of the two hydraulic drives 3.
  • the priority valve 7 is provided between the branch 8 and the corresponding main control valve 6.
  • all main control valves 6 are each designed as hydraulically controlled main control valves 6, which can be controlled by the joystick designed as at least a partially hydraulic joystick, preferably a fully hydraulic joystick.
  • the control of the main control valves 6 is therefore still possible even if the electrical components fail.
  • the priority valve 7 is electrically connected to an electronic control unit not shown in the drawing and can be controlled by this control unit to produce an additional hydraulic resistance.
  • the hydraulic control 1 also includes sensors (not shown in the drawing) provided on the movable components for the direct or indirect detection of their respective position, which are connected to the control unit in order to pass on the detected sensor values to the latter.
  • sensors not shown in the drawing
  • at least one trajectory can be stored in the control unit and, on the other hand, a control mode can be activated in which the priority valve 7 can be controlled by the control unit using the values currently detected by the sensors when the joystick is operated in such a way that the stored trajectory is driven by corresponding control of the drives 3.
  • the priority valve 7 is actuated as required to achieve the stored trajectory, so that either the hydraulic drive 3 with the higher load is prioritized over the hydraulic drive 3 with the lower load or vice versa.
  • hydraulic drive 3 with the lower load is prioritized over the hydraulic drive 3 with the higher load. Consequently, drive 3 with the lower load is subjected to more resistance, so that it is actually operated less than is actually specified by the operator of the construction machine by operating the joystick.
  • FIG. 2 A second embodiment of the invention is shown.
  • Two hydraulic pressure sources 2 with different pressure levels are provided in the object shown.
  • Each hydraulic drive 3 is connected to both pressure sources 2 by means of a hydraulic connection 4, in each of which a main control valve 6 that can be controlled by the joystick is provided.
  • This embodiment also includes two electrically actuated priority valves 7 designed as proportional valves, both of which are assigned to one of the two drives 3 and are provided in its two hydraulic connections 4.
  • the two priority valves 7 are each arranged between the corresponding hydraulic pressure source 2 and the main control valve 6 connected to it, so that the respective priority valve 7 is provided in front of the corresponding main control valve 6 as seen from the pressure source 2, specifically between the branch 8 and the corresponding main control valve 6.
  • a branch 8 is initially provided, from which two separate connections 4, each with a main control valve 6, lead to one of the two hydraulic drives 3.
  • the priority valves 7 are each electrically connected to an electronic control unit not shown in the drawing and can be controlled by this control unit to produce additional hydraulic resistance.
  • the Fig. 3 The embodiment shown also includes two hydraulic pressure sources 2 with different pressure levels and two electrically actuated priority valves 7 designed as proportional valves. Deviating from the embodiment shown in Fig. 3 However, in the object shown, the two priority valves 7 are assigned to a single one of the two drives 3 and are provided in its two hydraulic connections 4.
  • the two priority valves 7 are assigned to the drive 3 which is designed as a single hydraulic cylinder 5.
  • the main control valves 6 are each provided in the connection 4 of a single pressure source 2 with a single hydraulic drive 3. If - as in Fig. 3 shown - initially one branch 8 is provided for each pressure source 2, from then on two separate connections 4, each with a main control valve 6, lead to one of the two hydraulic drives 3.
  • the priority valves 7 are each provided between the branch 8 and the corresponding main control valve 6.
  • all main control valves 6 are each designed as a hydraulically controlled main control valve 6, which can be controlled by the at least partially hydraulic joystick, preferably a fully hydraulic joystick. This means that the main control valves can still be controlled even if the electrical components fail.
  • the priority valves 7 are each electrically connected to an electronic control unit not shown in the drawing and can be controlled by this control unit to produce additional hydraulic resistance.
  • the hydraulic control 1 further comprises sensors provided on the movable components for the direct or indirect detection of their respective position, which are connected to the control unit in order to pass on the detected sensor values to the latter.
  • sensors provided on the movable components for the direct or indirect detection of their respective position, which are connected to the control unit in order to pass on the detected sensor values to the latter.
  • at least one trajectory can be stored in the control unit and, on the other hand, a control mode can be activated in which the priority valves 7 can be controlled by the control unit using the values currently detected by the sensors when the joystick is operated in such a way that the stored trajectory is driven by corresponding control of the drives 3.
  • the priority valves 7 are actuated as required to achieve the stored trajectory, so that either the hydraulic drive 3 with the higher load is prioritized over the hydraulic drive 3 with the lower load or, conversely, the hydraulic drive 3 with the lower load is prioritized over the hydraulic drive 3 with the higher load. Consequently, the drive 3 with the lower load is subjected to more resistance, so that it is actually actuated less than is actually specified by the operator of the construction machine by operating the joystick.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Operation Control Of Excavators (AREA)

Claims (18)

  1. Engin de chantier équipé d'un système hydraulique muni d'au moins une commande hydraulique (1) incluant au moins une manette d'actionnement, au moins une source de pression hydraulique (2) et deux entraînements hydrauliques (3), sachant que le niveau de pression de chaque entraînement hydraulique (3) peut différer en fonction du point de travail respectivement sélectionné dudit entraînement (3), chaque entraînement hydraulique (3) étant relié à chaque source de pression (2) au moyen d'un raccord hydraulique (4) respectif dans lequel est prévue, à chaque fois, une vanne de commande principale (6) pouvant être pilotée par l'intermédiaire de l'unique manette d'actionnement ou d'au moins l'une des manettes d'actionnement, ledit engin de chantier comprenant plusieurs éléments structurels qui peuvent au moins être mus les uns par rapport aux autres, auxquels un entraînement hydraulique (3) respectif est associé en vue de mouvoir ces éléments structurels, caractérisé par le fait qu'au moins une commande hydraulique (1) inclut au moins une vanne prioritaire (7) qui est actionnable électriquement, est conçue comme une vanne proportionnelle, est associée à un entraînement (3) et est prévue dans le raccord hydraulique (4) de ce dernier, chaque vanne prioritaire (7) étant connectée électriquement à l'unité de commande électronique et pouvant être pilotée de manière à provoquer une résistance hydraulique supplémentaire, ladite commande hydraulique (1) incluant en outre des capteurs qui, prévus sur les éléments structurels mobiles afin de détecter indirectement ou directement leur position considérée, sont respectivement connectés à l'unité de commande en vue de lui transmettre les valeurs détectées par lesdits capteurs, sachant par ailleurs que, dans ladite unité de commande, il est d'une part possible d'enregistrer au moins une trajectoire de mouvement et, d'autre part, d'activer un mode de commande dans lequel chaque vanne prioritaire (7) peut être pilotée par ladite unité de commande moyennant une manoeuvre de la manette d'actionnement à présence minimale, en utilisant les valeurs respectivement détectées en temps réel par lesdits capteurs, de façon telle que ladite trajectoire de mouvement enregistrée soit parcourue par pilotage correspondant des entraînements (3).
  2. Engin de chantier selon la revendication précédente, caractérisé par le fait qu'au moins deux sources de pression hydraulique (2) sont prévues, chaque entraînement hydraulique (3) étant relié à chaque source de pression (2) un moyen d'un raccord hydraulique (4) respectif, et au moins deux sources de pression hydraulique (2) présentant des niveaux de pression différents.
  3. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), la vanne prioritaire (7) intégrée dans le raccord hydraulique (4) correspondant ou, respectivement, les vannes prioritaires (7) intégrées dans les raccords hydrauliques (4) correspondants est (sont) interposée(s), à chaque fois, entre la source de pression hydraulique (2) correspondante et la vanne de commande principale (6) reliée à cette dernière.
  4. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), d'une part, au moins une vanne de commande principale (6) est conçue en tant que vanne de commande principale (6) pilotée hydrauliquement, chaque vanne de commande principale (6) étant de préférence conçue en tant que vanne de commande principale (6) pilotée hydrauliquement et, d'autre part, chaque manette d'actionnement correspondante, prévue pour le pilotage hydraulique, est conçue en tant que manette d'actionnement au moins partiellement hydraulique, de préférence en tant que manette d'actionnement entièrement hydraulique par laquelle peut être pilotée, à chaque fois, au moins l'une des vannes de commande principale (6) existantes, pilotées hydrauliquement, de préférence chaque vanne de commande principale (6) pilotée hydrauliquement.
  5. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), au moins un capteur électrique de mouvements est associé à chaque entraînement hydraulique (3) en vue de détecter des mouvements dudit entraînement hydraulique (3) concerné.
  6. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), au moins un capteur électrique de mouvements est associé à chaque entraînement hydraulique (3) en vue de détecter des mouvements de l'élément structurel concerné, pouvant être mû par l'entraînement hydraulique (3) respectif.
  7. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), au moins un capteur, affecté à la détection de la position d'un élément structurel mobile dudit engin de chantier, est conçu en vue de la détection indirecte ou directe de la position absolue dans l'espace.
  8. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), au moins un capteur, affecté à la détection de la position d'un élément structurel mobile de l'engin de chantier, est conçu en vue de détecter la position relative de cet élément structurel par rapport audit engin de chantier et/ou à un autre élément structurel dudit engin de chantier.
  9. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), un capteur de pression respectif, connecté à l'unité de commande et associé à au moins un entraînement hydraulique (3), de préférence à chaque entraînement hydraulique (3), détecte la pression hydraulique agissant sur cet entraînement hydraulique (3) et la transmet à l'unité de commande.
  10. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), au moins une vanne de commande principale (6) est conçue en tant que vanne de commande principale (6) pilotée électriquement, chaque vanne de commande principale (6) étant de préférence conçue, à chaque fois, en tant que vanne de commande principale (6) pilotée électriquement, sachant qu'au moins une manette d'actionnement est conçue en tant que manette d'actionnement au moins partiellement électrique, de préférence en tant que manette d'actionnement entièrement électrique, en vue du pilotage d'au moins une, préférentiellement de chaque vanne de commande principale (6) existante, pilotée électriquement.
  11. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans le cas d'au moins un raccord hydraulique (4), ce dernier est constitué de deux raccords partiels dans la région partielle située après la vanne de commande principale (6).
  12. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que ledit engin de chantier est réalisé en tant que pelleteuse hydraulique et comprend un bas de caisse, une superstructure implantée de manière rotative sur ce dernier, et une flèche en porte-à-faux agencée à pivotement sur ladite superstructure.
  13. Engin de chantier selon la revendication précédente, caractérisé par le fait que la flèche en porte-à-faux est conçue en tant que bras articulé comprenant un premier segment agencé à pivotement sur la superstructure, et un second segment agencé à pivotement sur ledit premier segment du bras, un godet étant agencé à pivotement sur ledit second segment dudit bras.
  14. Engin de chantier selon la revendication précédente, caractérisé par le fait que, dans au moins une commande hydraulique (1), les deux entraînements (3) peuvent développer des forces maximales d'intensités différentes et l'entraînement hydraulique (3) présentant la force maximale d'intensité supérieure est associé au premier segment du bras, en vue du pivotement de celui-ci, l'entraînement hydraulique (3) présentant la force maximale d'intensité moindre étant associé au second segment du bras, en vue du pivotement de ce dernier par rapport audit premier segment dudit bras.
  15. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), au moins un entraînement hydraulique (3) est conçu au moins en tant que vérin hydraulique (5), de préférence sous forme de plusieurs vérins hydrauliques (5) prévus parallèlement, chaque entraînement hydraulique (3) étant préférentiellement conçu, à chaque fois, au moins en tant que vérin hydraulique (5), de préférence sous forme de plusieurs vérins hydrauliques (5) prévus parallèlement.
  16. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), le mode de commande peut être activé au moins manuellement.
  17. Engin de chantier selon l'une des revendications précédentes, caractérisé par le fait que, dans au moins une commande hydraulique (1), des valeurs de capteurs revêtant par exemple la forme d'une combinaison de valeurs de capteurs et/ou d'une séquence de valeurs de capteurs en présence desquelles le mode de commande est censé être activé, sont enregistrées dans l'unité de commande ; et par le fait qu'un algorithme est intégré dans ladite unité de commande en vue de l'estimation des valeurs détectées en temps réel par lesdits capteurs, et en vue de l'activation automatique dudit mode de commande s'il existe une concordance correspondante avec les valeurs de capteurs et/ou la (les) combinaison(s) de valeurs de capteurs et/ou la (les) séquence(s) de valeurs de capteurs, enregistrée(s) dans ladite unité de commande.
  18. Engin de chantier selon la revendication précédente, caractérisé par le fait que, dans au moins une commande hydraulique (1), un mode d'automatisme, en présence duquel l'algorithme est actif en vue de l'activation automatique du mode de commande, peut être activé dans l'unité de commande.
EP22194607.2A 2022-09-08 2022-09-08 Machine de construction pourvu de système hydraulique Active EP4335981B1 (fr)

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EP22194607.2A EP4335981B1 (fr) 2022-09-08 2022-09-08 Machine de construction pourvu de système hydraulique
US18/242,108 US12221770B2 (en) 2022-09-08 2023-09-05 Construction machine with a hydraulic system

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WO1990011413A1 (fr) * 1989-03-22 1990-10-04 Hitachi Construction Machinery Co., Ltd. Unite de commande hydraulique pour engins de construction et de genie civil
FR2744497B1 (fr) * 1996-02-07 1998-04-03 Rexroth Sigma Dispositif de distribution hydraulique multiple
GB0614534D0 (en) * 2006-07-21 2006-08-30 Artemis Intelligent Power Ltd Fluid power distribution and control system
JP2014505810A (ja) * 2010-12-27 2014-03-06 ボルボ コンストラクション イクイップメント アーベー 建設機械のブーム−旋回複合駆動油圧制御システム
DE102011106307A1 (de) * 2011-07-01 2013-01-03 Robert Bosch Gmbh Steueranordnung und Verfahren zum Ansteuern von mehreren hydraulischen Verbrauchern
JP6915042B2 (ja) * 2017-03-10 2021-08-04 住友建機株式会社 ショベル
JP6826050B2 (ja) * 2017-04-10 2021-02-03 株式会社小松製作所 建設機械および制御方法
CN109563696B (zh) * 2017-05-09 2021-05-07 日立建机株式会社 作业机械
JP6861598B2 (ja) * 2017-08-29 2021-04-21 株式会社小松製作所 作業車両の制御システム、方法、及び作業車両
DE102018117949A1 (de) * 2018-07-25 2020-01-30 Putzmeister Engineering Gmbh Hydrauliksystem und Verfahren zum Steuern eines Hydrauliksystems
CN109654074B (zh) * 2018-12-26 2020-04-07 太原理工大学 一种工程机械液压系统
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DE102019216771A1 (de) * 2019-10-30 2021-05-06 Robert Bosch Gmbh Hydraulische Steueranordnung zur Druckmittelversorgung wenigstens zweier hydraulischer Verbraucher

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