EP2393996B1 - Hydraulisches system für eine handhabungs- oder erdbewegungsmaschine mit einem energiespeicher - Google Patents

Hydraulisches system für eine handhabungs- oder erdbewegungsmaschine mit einem energiespeicher Download PDF

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Publication number
EP2393996B1
EP2393996B1 EP10708298A EP10708298A EP2393996B1 EP 2393996 B1 EP2393996 B1 EP 2393996B1 EP 10708298 A EP10708298 A EP 10708298A EP 10708298 A EP10708298 A EP 10708298A EP 2393996 B1 EP2393996 B1 EP 2393996B1
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Prior art keywords
chamber
jack
accumulator
pressure
cylinder
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EP10708298A
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English (en)
French (fr)
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EP2393996A1 (de
Inventor
Ettore Gismondi
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Manu Lorraine
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Manu Lorraine
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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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/20—Control systems or devices for non-electric drives
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief 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
    • F15B2211/60—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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel
    • 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 invention relates to a hydraulic system of handling or earth moving equipment with an energy accumulator for recovering a portion of potential energy during the handling of the loads, in particular during the descent phases.
  • Known handling equipment such as lifting cranes having articulated arms whose movement is given by hydraulic cylinders.
  • a pump provides a pressurized fluid and a dispensing valve selectively supplies a first chamber of the cylinder for an output movement of the cylinder, or a second chamber of the cylinder for the withdrawal of the cylinder.
  • the document WO 98/33989 proposes a hydraulic system in which an assistance cylinder is mounted in parallel with a main cylinder.
  • the first assistance jack chamber is fed with a fluid maintained under pressure by an accumulator.
  • a second pump and a purge valve are provided to raise or lower the pressure level in the accumulator.
  • This system has the disadvantage of requiring an additional pump.
  • the pressure level must be adjusted manually. Indeed, depending on the level of charge, it is possible that the pressure supplied by the accumulator is insufficient. In this case, it is necessary to control a rise in pressure using the pump. When the load is lower or almost zero, the pressure supplied by the battery may be too high and energy must be supplied during the descent phase to counter the pressure of the battery. It is then necessary to purge part of the pressure of the accumulator.
  • the invention aims to provide a hydraulic system of handling or earth moving equipment with an energy accumulator with a limited amount of equipment and a transparent management of the operation for the driver of the machine.
  • the subject of the invention is a hydraulic system of a handling or earth moving machine comprising a movable element driven by a first and a second cylinder connected in parallel and mechanically coupled, the system comprising a hydraulic fluid supply. under pressure, a cover for containing the hydraulic fluid, a distribution valve for selectively connecting a first chamber and a second chamber of the first cylinder to the feed or the tarpaulin, the pressurization of the first chamber being able to cause the lifting a load by the vehicle, an accumulator for accumulating fluid under pressure, the accumulator being connected to a first chamber of the second cylinder.
  • the system comprises a non-return valve between the first chambers, the non-return valve allowing fluid passage from the first chamber of the first cylinder to the first chamber of the second cylinder, regulation means for disconnecting the first chamber.
  • accumulator and purge the first chamber of the second cylinder control means of the control means controlling the disconnection of the accumulator and the purge of the first chamber of the second cylinder when the pressure in the second cylinder chamber of the first jack is greater than a predetermined threshold.
  • the non-return valve passes fluid to the first chamber of the first cylinder.
  • second cylinder which allows to provide additional thrust by the second cylinder. This supplement intervenes automatically without driver intervention.
  • the pressure in the second chamber of the first cylinder increases to cause the descent. If the latter pressure rises above the predetermined threshold, the disconnection of the accumulator and the purge of the first chamber of the second cylinder occurs. The counterpressure for the descent then decreases, which limits the power used to control the descent.
  • the pressure in the accumulator remains at the same level and the energy reserve remains contained in the accumulator.
  • the pressure level maintained by the accumulator will be provided initially in the up phase, the pressure naturally decreasing during deployment of the cylinder.
  • the pressure level in the accumulator thus adjusts automatically as well as automatically, without the intervention of the driver.
  • control means are hydraulic.
  • the system thus remains in the same technology, with means conventionally mastered on this type of machine.
  • the regulation means comprise a normally open accumulator valve placed on the line connecting the accumulator and the first chamber of the second cylinder and driven by the pressure of the second chamber of the first cylinder. As soon as the pressure in the second chamber of the first cylinder exceeds the predetermined threshold, the accumulator valve switches which allows to isolate the accumulator and to prevent its discharge.
  • the regulating means comprise for example a normally closed expansion valve placed on the pipe connecting the first chamber of the second cylinder to the tank. As soon as the pressure in the second chamber of the first cylinder exceeds the predetermined threshold, the expansion valve switches and lets out hydraulic fluid from the first chamber of the second cylinder. Thus, one obtains the purge which allows to allow or facilitate the descent of the cylinders.
  • the expansion valve is controlled hydraulically by the pressure of the second chamber of the first cylinder.
  • the opening of the expansion valve is proportional to the difference between the pressure of the second chamber of the first cylinder and the predetermined threshold.
  • the opening of the expansion valve is not sudden, but progressive, which avoids the generation of a jerk by the pressure drop that would otherwise be brutal at the opening of the expansion valve.
  • a second chamber of the second cylinder is connected to the second chamber of the first cylinder.
  • the supply pressure can thus be exerted on both cylinders during the descent phase.
  • the system comprises purge means for emptying the accumulator of the fluid under pressure. When the vehicle is put out of service, the energy reserve of the accumulator can be released.
  • the predetermined threshold is for example between 10 and 100 bar, preferably between 40 and 60 bar.
  • the invention also relates to a method of controlling a hydraulic system handling or earth moving machine comprising a movable member driven by a first and a second cylinder connected in parallel and mechanically coupled, an accumulator for accumulating fluid under pressure, the accumulator being connected to a first chamber of the second cylinder, the method according to which a first chamber and a second chamber of the first cylinder are selectively connected to a feed or to a tarpaulin, the pressurization of the first chamber being suitable for cause the lifting of a load by the machine, characterized in that allows the passage of fluid from the first chamber of the first cylinder to the first chamber of the second cylinder when the pressure on the side of the first cylinder is stronger than that the second cylinder, and disconnects the accumulator and purge the first chamber of the second cylinder when the pressure in the second cylinder the second chamber of the first jack is greater than a predetermined threshold.
  • a handling machine 1 represented on the Figures 1 to 3 is intended to transfer loads from one position to another.
  • the machine 1 is installed on a platform Q and transfers the loading of a barge P into the trucks, not shown, on the platform Q.
  • the machine 1 comprises a movable element such as an arrow 10 hinged about a horizontal axis on a frame 11 and at the end of which is articulated a pendulum 12.
  • the figure 2 shows the detail of the implantation of the arrow 10 on the frame 11.
  • Two hydraulic cylinders 12, 13 are mounted in parallel and make it possible to control the pivoting movement of the boom 10, in a manner known per se.
  • a first cylinder 12 is connected to a dispensing valve 14 while the second cylinder 13 is connected to an accumulator 15, in a manner which is detailed below.
  • the accumulator 15 is for example a reservoir containing a gas under pressure, for example nitrogen. When a hydraulic fluid fills the reservoir, it compresses the gas even more, which allows energy to be accumulated. This energy is restored, at least partially when the fluid stored in the tank is supplied under pressure outside the tank. Other means of accumulation can also be used. Several tanks can be used to obtain sufficient accumulation capacity, as shown in the diagram of the figure 3 , but are subsequently designated by the generic term accumulator 15.
  • each cylinder 12, 13 has two chambers for receiving the hydraulic fluid.
  • a first chamber 121, 131 is fed by the hydraulic fluid, it causes the output of the rod and, according to the mounting of the boom 10, the lifting of the load to move.
  • the supply of the second chamber 122, 132 of the cylinder causes the retraction of the rod and the descent of the load.
  • the cylinders 12, 13 are mechanically coupled, so that the movement of the rods is synchronous.
  • the system comprises a supply of hydraulic fluid under pressure, carried out by a pump 16 driven by a heat engine. It also comprises a cover 19 for containing the hydraulic fluid in which the pump 16 sucks fluid and in which the system members discharge the fluid after use.
  • the dispensing valve 14 makes it possible to drive the first cylinder 12.
  • the dispensing valve 14 has three positions, a neutral position in which the pipes connecting the chambers of the first cylinder 12 to the distribution valve 14 are closed, a lifting position and a descent position. In the lifting position, the first chamber 121 is connected to the supply, while the second chamber 122 is connected to the tank 19.
  • the dispensing valve 14 is proportional, preferably, that is to say that the fluid flow to the cylinder can be modulated. The connections are reversed in the descent position.
  • Each cylinder 12, 13 comprises a safety device 123, 133 at the entrance of the first chamber 121, 131.
  • the safety device 123, 133 makes it possible to prevent the load from coming down if a pipe leaks.
  • the safety device 123, 133 allows the fluid to enter via a non-return valve 1230 and allows it to exit via a normally closed valve 1231, the opening of which is controlled at the same time as the down position of the dispensing valve 14.
  • These safety devices are known per se and are not essential to the embodiment of the invention.
  • the second chamber 132 of the second cylinder 13 is connected to the second chamber 122 of the first cylinder 12. Furthermore, a non-return valve 17 makes it possible to connect the first two chambers 121, 131, the valve being passing in the direction of the first 12 to the second cylinder 13.
  • the first chamber 131 of the second cylinder 13 is also connected to the accumulator 15, by means of regulation means 18.
  • the means of regulation 18 can disconnect the accumulator 15 and purge the first chamber 131 of the second cylinder 13.
  • they comprise a normally open accumulator valve 181 placed on the pipe connecting the accumulator 15 and the first chamber 131 of the second cylinder 13.
  • the regulation means 18 further comprise a normally closed expansion valve 182 placed on the pipe connecting the first chamber 131 of the second cylinder 13 to the tank 19.
  • the expansion valve 182 and the storage valve are hydraulically controlled by the pressure of the second chambers 122, 132 so that the switching of the accumulator valve occurs before the switching of the expansion valve 182.
  • the expansion valve 182 and the accumulator valve 181 are set to switch when the control pressure is above a threshold predetermined, for example 10, 40, 60 or 100 bar.
  • the opening of the expansion valve 182 is proportional to the difference between the pressure of the second chambers 122, 132 and the predetermined threshold.
  • the system also comprises purge means 150 for emptying the accumulator 15 of the fluid under pressure. These means are controlled manually or with the start of the machine 1 to cause purging during the shutdown of the machine 1. These means are conventional and are not detailed here.
  • the hydraulic accumulator 15 is discharged.
  • the pump 16 is started and sends an oil flow.
  • the dispensing valve 14 is in the neutral position so that the oil coming from the pump 16 returns to the tank 19.
  • the ducts leading to the cylinders are closed by the dispensing valve 14.
  • the purge means 150 are in position closed and the accumulator valve 181 is in the open position.
  • the dispensing valve 14 is placed in the raised position, which makes it possible to supply pressurized oil to the first chamber 121 of the first cylinder 12 and, through the non-return valve 17, the first chamber 131 of the second cylinder 13.
  • the second chambers 122, 132 of the cylinders are connected to the tank 19 by the distribution valve 14.
  • the storage valve 181 is open and the pressure of the pump 16 is partially diverted into the accumulator 15.
  • the pressure in the accumulator 15 reaches a level substantially equivalent to that of the pressure in the first chambers 121, 131.
  • the dispensing valve 14 When the lifting is complete, the dispensing valve 14 returns to the neutral position. The pressure in the first chambers 121, 131 is maintained.
  • the dispensing valve 14 When then linked with a descent, the dispensing valve 14 is placed in the lowering position by putting in communication the first chamber 121 of the first cylinder 12 with the cover 19 and the second chambers 122, 132 with the pump 16.
  • the first cylinder 12 because of the pressure loss in the first chamber 121, no longer supports the load.
  • the pressure supplied by the accumulator 15 is blocked by the non-return valve 17 and supplies the first chamber 131 of the second cylinder 13.
  • the opening of the safety valves is controlled at the same time as the passage to the lowering position of the dispensing valve 14, which allows the discharge of the first chambers 121, 131. If the load on the boom 10 is sufficient, the descent actuator rods are obtained by releasing the pressure in the first chamber 121 of the first cylinder 12. The first chamber 131 of the second cylinder 13 remains under pressure provided by the accumulator 15. The fluid in the first chamber 131 of the second cylinder 13 is put into compression and transferred into the accumulator 15, which stores energy recovered on the descent of the load.
  • the accumulator 15 supplies pressure to the first chamber 131 of the second cylinder 13, while the supply only needs to supply the first chamber 121 of the first cylinder 12, as long as the pressure level remains lower than that provided by the accumulator 15.
  • the fluid supplied to the second chambers 122, 132 rises in pressure to assist the descent of the load.
  • the accumulator valve 181 switches and isolates the accumulator 15.
  • the expansion valve 182 opens at least partially in order to let fluid flow from the first chamber 131 of the second cylinder 13 to the tank 19.
  • the pressure level in the accumulator 15 is then adjusted, without intervention of the driver. It is noted that this adjustment occurs only rarely, when the nature of the work done by the machine 1 changes. Thus, in most cycles of lifting and lowering, the second cylinder 13 and the accumulator 15 allow the recovery of energy.
  • the expansion valve 182 is a proportional valve, which opens proportionally to the pressure difference between the control pressure and the predetermined threshold. The discharge of the second cylinder is then progressive and no jerk can be generated.
  • the invention is not limited to the embodiment which has just been described by way of example.
  • the switching of the expansion valves and accumulator can be controlled electrically, with detection of the pressure threshold by electronic means.
  • the second chamber 132 of the second cylinder 13 could be connected directly to the sheet 19.
  • the system according to the invention can also be set up for several joints, for example for the articulation of the balance on the same machine.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (10)

  1. Hydraulisches System für Fördergerät oder Erdbaumaschine (1), ein bewegliches Teil (10) aufweisend, das durch einen ersten (12) und einen zweiten Zylinder (13) bewegt wird, die parallel zueinander montiert und mechanisch gekoppelt sind, wobei das System eine Versorgung mit Hydraulikfluid unter Druck umfasst, einen Sammelbehälter (19) zur Aufnahme des Hydraulikfluids, ein Verteilerventil (14) zum wahlweisen Verbinden einer ersten Kammer (121) und einer zweiten Kammer (122) des ersten Zylinders (12) mit der Versorgung oder dem Sammelbehälter (19), wobei die Druckerhöhung in der ersten Kammer (121) geeignet ist, das Heben einer Last durch das Gerät (1) zu bewirken, einen Energiesammler (15) zum Sammeln von Fluid unter Druck, wobei der Energiesammler (15) mit einer ersten Kammer (131) des zweiten Zylinders (13) verbunden ist, wobei das System dadurch gekennzeichnet ist, dass es ein Rückschlagventil (17) zwischen den ersten Kammern (121, 131) aufweist, wobei das Rückschlagventil (17) den Durchfluss von Fluid von der ersten Kammer (121) des ersten Zylinders (12) zur ersten Kammer (131) des zweiten Zylinders (13) zulässt, Regulierungsmittel (18) zum Trennen der Verbindung des Energiesammlers (15) und Entleeren der ersten Kammer (131) des zweiten Zylinders (13), Betätigungsmittel für die Regulierungsmittel (18), die das Trennen der Verbindung des Energiesammlers (15) steuern und die Entleerung der ersten Kammer (131) des zweiten Zylinders (13), wenn der Druck in der zweiten Kammer (122) des ersten Zylinders (12) einen festgelegten Schwellenwert überschreitet.
  2. System nach Patentanspruch 1, in dem die Betätigungsmittel hydraulisch sind.
  3. System nach Patentanspruch 2, in dem die Regulierungsmittel (18) ein Energiesammlerventil (181) umfassen, das normalerweise geöffnet ist und in der Leitung angeordnet ist, die den Energiesammler (15) mit der ersten Kammer (131) des zweiten Zylinders (13) verbindet, und das durch den Druck in der zweiten Kammer (122) des ersten Zylinders (12) gesteuert wird.
  4. System nach Patentanspruch 2, in dem die Regulierungsmittel (18) ein Entspannungsventil (182) tragen, das normalerweise geschlossen ist und in der Leitung angeordnet ist, die die erste Kammer (131) des zweiten Zylinders (13) mit dem Sammelbehälter (19) verbindet.
  5. System nach Patentanspruch 4, in dem das Entspannungsventil (182) durch den Druck in der zweiten Kammer (122) des ersten Zylinders (12) hydraulisch gesteuert wird.
  6. System nach Patentanspruch 4, in dem die Öffnung des Entspannungsventils (182) zur Differenz zwischen dem Druck in der zweiten Kammer (122) des ersten Zylinders (12) und dem festgelegten Schwellenwert proportional ist.
  7. System nach Patentanspruch 1, in dem eine zweite Kammer (132) des zweiten Zylinders (13) mit der zweiten Kammer (122) des ersten Zylinders (12) verbunden ist.
  8. System nach Patentanspruch 1, dadurch gekennzeichnet, dass es Mittel zum Entleeren (150) des Energiesammlers (15) für Fluid unter Druck aufweist.
  9. System nach Patentanspruch 1, in dem der festgelegte Schwellenwert zwischen 10 und 100 bar liegt, vorzugsweise zwischen 40 und 60 bar.
  10. Verfahren zur Betätigung eines hydraulischen Systems für Fördergerät oder Erdbaumaschine (1), ein bewegliches Teil (10) aufweisend, das durch einen ersten (12) und einen zweiten Zylinder (13) bewegt wird, die parallel zueinander montiert und mechanisch gekoppelt sind, einen Energiesammler (15) zum Sammeln von Fluid unter Druck, wobei der Energiesammler (15) mit einer ersten Kammer (131) des zweiten Zylinders (13) verbunden ist, Verfahren, nach dem wahlweise eine erste Kammer (121) und eine zweite Kammer (122) des ersten Zylinders (12) mit einer Versorgung oder einem Sammelbehälter (19) verbunden wird, wobei die Druckerhöhung in der ersten Kammer (121) geeignet ist, das Heben einer Last durch das Gerät (1) zu veranlassen, dadurch gekennzeichnet, dass der Übertritt von Fluid aus der ersten Kammer (121) des ersten Zylinders (12) zur ersten Kammer (131) des zweiten Zylinders (13) zugelassen wird, wenn der Druck auf der Seite des ersten Zylinders (12) höher ist, als auf der Seite des zweiten Zylinders (13), und die Verbindung des Energiesammlers (15) gelöst und die erste Kammer (131) des zweiten Zylinders (13) entleert wird, wenn der Druck in der zweiten Kammer (122) des ersten Zylinders (12) höher ist, als ein festgelegter Schwellenwert.
EP10708298A 2009-02-09 2010-02-08 Hydraulisches system für eine handhabungs- oder erdbewegungsmaschine mit einem energiespeicher Active EP2393996B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0950783A FR2941976B1 (fr) 2009-02-09 2009-02-09 Systeme hydraulique d'engin de manutention ou de terrassement avec accumulateur d'energie
PCT/FR2010/050198 WO2010089518A1 (fr) 2009-02-09 2010-02-08 Système hydraulique d'engin de manutention ou de terrassement avec accumulateur d'énergie.

Publications (2)

Publication Number Publication Date
EP2393996A1 EP2393996A1 (de) 2011-12-14
EP2393996B1 true EP2393996B1 (de) 2013-04-03

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EP (1) EP2393996B1 (de)
FR (1) FR2941976B1 (de)
WO (1) WO2010089518A1 (de)

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DE102010041043A1 (de) * 2010-09-20 2012-03-22 Zf Friedrichshafen Ag Speicheranordnung für eine Hydraulikversorgung eines Fahrzeuggetriebes
DE102011008145B3 (de) * 2011-01-08 2012-02-02 Parker Hannifin Gmbh Energieeffizienter hydraulischer Antrieb für die Linearbewegung eines Massekörpers
FR2971023B1 (fr) * 2011-01-31 2014-07-11 Poclain Hydraulics Ind Dispositif de transmission hydraulique permettant la recuperation d'energie
RU2558712C2 (ru) 2011-03-21 2015-08-10 Шуанлай ЯН Подъемное устройство и способ подъема стрелы строительной машины, и строительная машина с таким подъемным устройством
WO2014017958A1 (en) * 2012-07-26 2014-01-30 Volvo Construction Equipment Ab Balanced linkage
GB2546485A (en) 2016-01-15 2017-07-26 Artemis Intelligent Power Ltd Hydraulic apparatus comprising synthetically commutated machine, and operating method

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JPS60250128A (ja) * 1984-05-25 1985-12-10 Mitsubishi Heavy Ind Ltd 液圧再生回路
SK368091A3 (en) * 1991-12-04 1994-05-11 Frantisek Krnavek Device for potential energy recuperation of working device of building or earth machine
JP3129495B2 (ja) * 1991-12-13 2001-01-29 株式会社小松製作所 昇降作業機の位置エネルギ回収装置
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WO2010089518A1 (fr) 2010-08-12
FR2941976A1 (fr) 2010-08-13
FR2941976B1 (fr) 2011-03-11
EP2393996A1 (de) 2011-12-14

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