EP4112946B1 - Hydraulische anordnung für ein arbeitsfahrzeug - Google Patents

Hydraulische anordnung für ein arbeitsfahrzeug Download PDF

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Publication number
EP4112946B1
EP4112946B1 EP22180245.7A EP22180245A EP4112946B1 EP 4112946 B1 EP4112946 B1 EP 4112946B1 EP 22180245 A EP22180245 A EP 22180245A EP 4112946 B1 EP4112946 B1 EP 4112946B1
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EP
European Patent Office
Prior art keywords
tank
hydraulic arrangement
fluidly
cylinders
conduit
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EP22180245.7A
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English (en)
French (fr)
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EP4112946A1 (de
Inventor
Francesco CHIOCCOLA
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CNH Industrial Italia SpA
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CNH Industrial Italia SpA
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    • 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
    • E02F3/422—Drive systems for bucket-arms, front-end loaders, dumpers or the like
    • 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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • E02F9/2239—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
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • 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
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/88—Control measures for saving energy

Definitions

  • the present invention concerns a hydraulic arrangement, in particular hydraulic arrangement for managing a recovery hydraulic functionality of a work vehicle.
  • the present invention finds its preferred, although not exclusive, application in earth-moving vehicle provided with a boom such as a scraper.
  • Work vehicles such as scrapers, i.e. vehicles provided with a hydraulic actuated boom, may be provided with so-called energy recovery systems.
  • Energy recovery systems are configured to reduce the energy consumption during the movement of a boom that is controlled via a hydraulic actuator. Indeed, when the boom is controlled to be lowered, the fluid discharged by hydraulic actuator is stored to be used then the boom is controlled to be lifted.
  • Such systems foresees the presence of accumulators to allow the storing of the fluid discharged by the actuator and a control block configured to manage the fluid flow between the accumulators, the tank and the actuator as shown in JP2013145035A and JPH04120324A .
  • An aim of the present invention is to satisfy the above mentioned needs.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Lubricants (AREA)

Claims (9)

  1. Hydraulische Anordnung (1) für ein Arbeitsfahrzeug, das mit einem Auslegerarm, der dazu eingerichtet ist, über ein Paar von Zylindern (4, 5) gesteuert zu werden und einem Energierückgewinnungssystem (7), das ein Paar von Stützzylindern (8, 9) umfasst, die dazu eingerichtet sind, mit dem Paar von Zylindern (4, 5) zusammenzuwirken und mindestens einem Speicher (11) versehen ist,
    wobei die hydraulische Anordnung (1) eine Zuführleitung (12), die den Speicher (11) mit den Stützzylindern (8, 9) fluidisch verbindet, und ein Auswahlmodul (31) umfasst, das auf der Zuführleitung (12) fluidisch angeordnet ist,
    wobei das Auswahlmodul (31) dazu eingerichtet ist, den Fluiddurchfluss zwischen dem Speicher (11), den Stützzylindern (8, 9) und einem Tank (20, 20`) des Arbeitsfahrzeugs zu regulieren,
    wobei das Auswahlmodul (31) Ventileinrichtungen (32) umfasst, die in der Zuführleitung (12) und dem Tank (20, 20`) fluidisch angeordnet sind, wobei die Ventileinrichtungen (32) ein elektrisch-betätigtes Ventil aufweisen,
    wobei die hydraulische Anordnung dadurch gekennzeichnet ist, dass
    das Auswahlmodul (31) ein Paar von Rückschlagventilen (33, 34) umfasst, die in entsprechenden Leitungen (35, 36) fluidisch angeordnet sind, wobei die Leitungen (35, 36) fluidisch parallel zwischen dem Tank (20, 20`) und den Ventileinrichtungen (32) liegen, wobei die Rückschlagventile (33, 34) den Durchfluss von Fluid jeweils in einer Richtung entgegengesetzt zu dem entsprechend anderen ermöglichen.
  2. Hydraulische Anordnung nach Anspruch 1, wobei das Auswahlmodul (31) Ventileinrichtungen (32) umfasst, die auf der Zuführleitung (12) und dem Tank (20, 20`) fluidisch angeordnet sind, wobei die Ventileinrichtungen (32) ein Proportionalventil aufweisen.
  3. Hydraulische Anordnung nach Anspruch 1, wobei die Leitungen (35, 36), die dem Tank (20, 20') gegenüberliegen, in einer gemeinsamen Leitung (37) münden, die mit den Ventileinrichtungen (32) fluidisch verbunden ist.
  4. Hydraulische Anordnung nach einem der Ansprüche 1 bis 3, wobei eine der Leitungen (36) ein Rückschlagventil (34) trägt, das dazu eingerichtet ist, den Durchfluss von Fluid nur von den Ventileinrichtungen (32) zu dem Tank (20, 20') zu ermöglichen und die andere der Leitungen (35) ein Rückschlagventil (33) trägt, das dazu eingerichtet ist, den Durchfluss von Fluid nur von dem Tank (20, 20') zu den Ventileinrichtungen (32) zu ermöglichen, wobei eine Leitung (36) mit dem Tank (20, 20`) in einer ersten Position (X1) verbunden ist und die andere Leitung (35) mit dem Tank (20, 20') in einer zweiten Position (X2) verbunden ist, wobei die erste Position (X1) vertikal oberhalb bezüglich der zweiten Position (X2) liegt.
  5. Hydraulische Anordnung nach Anspruch 4, wobei die erste Position (X1) an einer oberen Wand des Tanks (20, 20') realisiert ist und die zweite Position (X2) an einer unteren Wand des Tanks (20, 20`) realisiert ist.
  6. Hydraulische Anordnung nach einem der vorgehenden Ansprüche, wobei das Nutzfahrzeug einen Tank (20), der mit den Speichern (11) fluidisch verbunden ist, und einen Puffertank (20`) umfasst, der von dem Tank (20) getrennt ist, wobei der Puffertank (20') nur mit dem Auswahlmodul (31) fluidisch verbunden ist.
  7. Hydraulische Anordnung nach Anspruch 6 wobei die Leitungen (35, 36) mit dem Puffertank (20`) fluidisch verbunden sind.
  8. Hydraulische Anordnung nach einem der vorhergehenden Ansprüche, die ein Füllmodul (15) aufweist, das zwischen dem Tank (20, 20`) und dem Speicher (11) fluidisch angeordnet ist, wobei das Füllmodul (15) dazu eingerichtet ist, die Speicher (11) zu füllen.
  9. Arbeitsfahrzeug, das mit einer hydraulischen Anordnung nach einem der vorhergehenden Ansprüche versehen ist.
EP22180245.7A 2021-06-29 2022-06-21 Hydraulische anordnung für ein arbeitsfahrzeug Active EP4112946B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000017045A IT202100017045A1 (it) 2021-06-29 2021-06-29 Disposizione idraulica per gestire una funzionalita' di recupero idraulico

Publications (2)

Publication Number Publication Date
EP4112946A1 EP4112946A1 (de) 2023-01-04
EP4112946B1 true EP4112946B1 (de) 2025-01-08

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EP22180245.7A Active EP4112946B1 (de) 2021-06-29 2022-06-21 Hydraulische anordnung für ein arbeitsfahrzeug

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IT (1) IT202100017045A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118727855B (zh) * 2024-08-12 2025-09-19 潍柴动力股份有限公司 工作装置、装载机及工作装置控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826555B2 (ja) * 1990-09-10 1996-03-13 株式会社小松製作所 作業機の位置エネルギー回収・活用装置
JP3929380B2 (ja) * 2002-09-26 2007-06-13 株式会社小松製作所 作業機の位置エネルギ回収・再生装置
US6918247B1 (en) * 2003-11-19 2005-07-19 Jack E Warner Assisted hydraulic system for moving a structural member
WO2012126266A1 (zh) * 2011-03-21 2012-09-27 Yang Shuanglai 用于作业机械的起重臂的升降系统和升降方法及作业机械
JP2013145035A (ja) * 2012-01-16 2013-07-25 Sumitomo Heavy Ind Ltd 建設機械のエネルギ回生装置

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EP4112946A1 (de) 2023-01-04
IT202100017045A1 (it) 2022-12-29

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