EP2302221A1 - Mehrfach konfigurierbare hydraulische Schaltung, Muldenkipperanwendung, und eine soche Schaltung verwendender Muldenkipper - Google Patents

Mehrfach konfigurierbare hydraulische Schaltung, Muldenkipperanwendung, und eine soche Schaltung verwendender Muldenkipper Download PDF

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Publication number
EP2302221A1
EP2302221A1 EP10173294A EP10173294A EP2302221A1 EP 2302221 A1 EP2302221 A1 EP 2302221A1 EP 10173294 A EP10173294 A EP 10173294A EP 10173294 A EP10173294 A EP 10173294A EP 2302221 A1 EP2302221 A1 EP 2302221A1
Authority
EP
European Patent Office
Prior art keywords
bypass
solenoid valve
controlled
dump truck
hydraulic circuit
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.)
Granted
Application number
EP10173294A
Other languages
English (en)
French (fr)
Other versions
EP2302221B1 (de
Inventor
Christian Driesbach
Jean-Jack Menard
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.)
Societe dEquipement Manutention et Transports SA
Original Assignee
Societe dEquipement Manutention et Transports SA
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 Societe dEquipement Manutention et Transports SA filed Critical Societe dEquipement Manutention et Transports SA
Priority to PL10173294T priority Critical patent/PL2302221T3/pl
Publication of EP2302221A1 publication Critical patent/EP2302221A1/de
Application granted granted Critical
Publication of EP2302221B1 publication Critical patent/EP2302221B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • 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
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant 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
    • F15B2211/20584—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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • 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
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/31505—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line
    • F15B2211/31511—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line having a single pressure source
    • 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
    • F15B2211/31523—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member
    • F15B2211/31529—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and an output member 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Definitions

  • the invention relates generally to the design of hydraulic power circuits.
  • the invention relates, according to a first aspect, to a hydraulic circuit comprising a reservoir of hydraulic fluid, first and second pumps, and first and second pressurized fluid distribution lines, designed to feed their respective outlets with first and second hydraulic receivers.
  • the two pump hydraulic circuits are generally used to power comparable receivers and intended to be simultaneously placed in an active state or in a state of rest.
  • the present invention aims to provide a hydraulic circuit that meets this need.
  • the hydraulic circuit of the invention is essentially characterized in that the first and second distribution lines are connected to one another by a common node connected to the first pump by a first controlled bypass, in that first and second stop solenoid valves are respectively arranged on the first and second lines between their common node and the respective outputs of these first and second lines, and in that a point of the second line, intermediate between the second solenoid valve and the output of the second line, is connected to the second pump through a second controlled bypass, each controlled bypass being selectively placed in an active position, in which the fluid passing through this bypass feeds at least one receiver, and in a recirculation position, in which the fluid passing through this bypass returns to the reservoir.
  • the invention is particularly useful in the case where the first and second pumps are mechanically coupled to each other.
  • first and second pumps respectively have first and second flow capacities, and that the first flow capacity is greater than the second.
  • this hydraulic circuit further comprises a first non-return valve, blocking towards the first solenoid valve, and disposed between this first solenoid valve and said intermediate point, and a second non-return valve, blocking towards the second controlled bypass, disposed between said intermediate point and second controlled bypass.
  • the invention also relates to the use of a hydraulic circuit as previously described, for the selective actuation of a compacting press and a lifting device fitted to a dump truck driven by a heat engine also designed to operating the pumps, characterized in that the first receiver comprises the compacting press, and in that the second receiver comprises the container lifter.
  • the hydraulic circuit is preferably at least controlled according to a first configuration, in which the first bypass is in the active position, in which the second bypass is in the recirculation position, in which the first solenoid valve is in blocking position, and wherein the second solenoid valve is in the driving position, the hoist being operated while the dump truck is stopped and the engine is idling.
  • the hydraulic circuit can also preferably be at least controlled according to a second configuration, in which the first bypass is in the active position, in which the second bypass is in the recirculation position, in which the first solenoid valve is in the driving position, and in which the second solenoid valve is in position blocking, this second configuration to operate alone compacting press when moving the dump truck.
  • the hydraulic circuit can advantageously also be used while being at least controlled according to a third configuration, in which the first and second bypass are in the active position, and in which the first and second solenoid valves are in the driving position, the compacting press and the container lifter being actuated while the dump truck is stopped and that the engine is running in accelerated mode.
  • the invention also relates to a dump truck characterized in that it uses a hydraulic circuit as previously defined.
  • the invention relates in particular to a hydraulic circuit comprising, in the illustrated embodiment, an RSV reservoir for hydraulic fluid, two pumps P1 and P2, two pressurized fluid distribution lines L1 and L2, and two hydraulic receivers. R1 and R2.
  • this circuit is mounted on a dump truck driven by a heat engine and equipped with a hydraulic compacting press forming the first receiver R1, and a hydraulic container hoist forming the second receiver R2.
  • the pumps P1 and P2 which are themselves driven by the thermal engine of the dump truck and which are connected to the reservoir RSV to draw the hydraulic fluid, are mechanically coupled to one another and are in practice constituted by two pump stages integrated in the same pump body.
  • the first pump P1 has a flow capacity greater than the flow capacity of the second pump P2, the ratio of these flow capacities being, for example, order of 2.
  • the distribution lines L1 and L2 are connected, by their respective ends L1s and L2s, to the receivers R1 and R2 which selectively supply hydraulic fluid under pressure.
  • these distribution lines L1 and L2 are connected to one another by a common node N12, which is itself connected to the first pump P1 by a first controlled bypass BP1.
  • stop solenoid valves EV1 and EV2 are respectively arranged on lines L1 and L2, between the common node N12 of these lines and the respective outputs L1s and L2s of these same lines L1 and L2.
  • the intermediate point P12 of the second line L2 which is arranged between the second solenoid valve EV2 and the output L2s of the second line L2, is connected to the second pump P2 through a second controlled bypass BP2.
  • Each of the controlled by-pass BP1 and BP2 is placed at will either in an active position, in which the fluid passing through this bypass feeds at least one of the receivers R1 and R2, or in a recirculation position, in which the fluid passing through this bypass returns to the RSV tank.
  • bypass BP1 illustrated in the figure is in the active position, while the bypass BP2 is in the recirculation position.
  • the hydraulic circuit further comprises a first non-return valve VAR1, blocking towards the first solenoid valve EV1, and disposed between this first solenoid valve EV1 and the intermediate point PI2, and a second non-return valve VAR2, blocking towards the second controlled bypass BP2, and disposed between the intermediate point PI2 and second controlled bypass BP2.
  • the hydraulic circuit thus designed can, on command, adopt several advantageous configurations.
  • the first bypass BP1 is in the active position
  • the second bypass BP2 is in the recirculation position
  • the first solenoid valve EV1 is in the blocking position
  • the second solenoid valve EV2 is in position bandwidth.
  • the first bypass BP1 is in the active position
  • the second bypass LP2 is in the recirculation position
  • the first solenoid valve EV1 is in the conducting position
  • the second solenoid valve EV2 is in the blocking position.
  • This second configuration allows to operate alone compacting press R1, both while the dump truck rolls than while it is stopped.
  • the first and second bypass BP1 and BP2 are in the active position, and the first and second solenoid valves EV1 and EV2 are in the driving position.
  • the compaction press R1 and the R2 container lifter are actuated together while the dump truck is stopped and the engine is running in accelerated mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP10173294.9A 2009-09-23 2010-08-18 Mehrfach konfigurierbare hydraulische Schaltung , Muldenkipperanwendung, und eine solche Schaltung verwendender Muldenkipper Active EP2302221B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10173294T PL2302221T3 (pl) 2009-09-23 2010-08-18 Układ hydrauliczny z wieloma konfiguracjami, zastosowanie w samochodzie wywrotce i samochód wywrotka wykorzystujący taki układ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0956570A FR2950400B1 (fr) 2009-09-23 2009-09-23 Circuit hydraulique a plusieurs configurations, application a un camion-benne, et camion-benne utilisant un tel circuit.

Publications (2)

Publication Number Publication Date
EP2302221A1 true EP2302221A1 (de) 2011-03-30
EP2302221B1 EP2302221B1 (de) 2013-05-01

Family

ID=42173324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10173294.9A Active EP2302221B1 (de) 2009-09-23 2010-08-18 Mehrfach konfigurierbare hydraulische Schaltung , Muldenkipperanwendung, und eine solche Schaltung verwendender Muldenkipper

Country Status (4)

Country Link
EP (1) EP2302221B1 (de)
ES (1) ES2423208T3 (de)
FR (1) FR2950400B1 (de)
PL (1) PL2302221T3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513967A1 (de) * 1985-04-18 1986-10-23 Mannesmann Rexroth GmbH, 8770 Lohr Sicherheitsanordnung fuer vorrangige hydraulische verbraucher
US5163542A (en) * 1989-03-31 1992-11-17 Kabushiki Kaisha Komatsu Seisakusho Clutch actuating hydraulic circuit
DE4243578A1 (de) * 1992-12-22 1994-06-23 Faun Umwelttechnik Gmbh Nutzfahrzeughydraulik
US20030198559A1 (en) * 2002-04-19 2003-10-23 Wayne Engineering Corporation Fluid system
JP2007191289A (ja) * 2006-01-20 2007-08-02 Kayaba Ind Co Ltd 塵芥収集車

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513967A1 (de) * 1985-04-18 1986-10-23 Mannesmann Rexroth GmbH, 8770 Lohr Sicherheitsanordnung fuer vorrangige hydraulische verbraucher
US5163542A (en) * 1989-03-31 1992-11-17 Kabushiki Kaisha Komatsu Seisakusho Clutch actuating hydraulic circuit
DE4243578A1 (de) * 1992-12-22 1994-06-23 Faun Umwelttechnik Gmbh Nutzfahrzeughydraulik
US20030198559A1 (en) * 2002-04-19 2003-10-23 Wayne Engineering Corporation Fluid system
JP2007191289A (ja) * 2006-01-20 2007-08-02 Kayaba Ind Co Ltd 塵芥収集車

Also Published As

Publication number Publication date
FR2950400B1 (fr) 2011-09-30
EP2302221B1 (de) 2013-05-01
FR2950400A1 (fr) 2011-03-25
PL2302221T3 (pl) 2013-10-31
ES2423208T3 (es) 2013-09-18

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