EP2855945B1 - Système hydraulique - Google Patents

Système hydraulique Download PDF

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Publication number
EP2855945B1
EP2855945B1 EP13711642.2A EP13711642A EP2855945B1 EP 2855945 B1 EP2855945 B1 EP 2855945B1 EP 13711642 A EP13711642 A EP 13711642A EP 2855945 B1 EP2855945 B1 EP 2855945B1
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EP
European Patent Office
Prior art keywords
hydraulic
pump
primary circuit
oil
valve
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
EP13711642.2A
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German (de)
English (en)
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EP2855945B2 (fr
EP2855945A1 (fr
Inventor
Jan-Martin VEIT
Werner MÜNZENMAIER
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.)
Putzmeister Engineering GmbH
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Putzmeister Engineering GmbH
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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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • F15B7/006—Rotary pump input
    • 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
    • E02F9/2292—Systems with two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
    • F04B9/1176—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
    • F04B9/1178—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor the movement in the other direction being obtained by a hydraulic connection between the liquid motor cylinders
    • 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
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027—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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/028—Shuttle 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • 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
    • F15B2211/2053—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
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • 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
    • 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
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • 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
    • F15B2211/26—Power control functions
    • 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
    • F15B2211/27—Directional control by means of the 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
    • F15B2211/305—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
    • F15B2211/315—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
    • F15B2211/31594—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 multiple pressure sources and 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/4159—Flow control characterised by the connections of the flow control means 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
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting 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
    • F15B2211/70—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
    • 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
    • F15B2211/7121—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in series
    • 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
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Definitions

  • the invention relates to a hydraulic system with a first hydraulic consumer driving primary circuit having a first, at least one motor-driven hydraulic pump comprehensive hydraulic drive unit with a second hydraulic consumer driving secondary circuit, the second, at least one further motor-driven hydraulic pump comprehensive hydraulic drive unit
  • a first operating state the hydraulic consumers arranged in the primary circuit and in the secondary circuit are independently supplied with hydraulic oil from a tank via their hydraulic drive units, wherein in a second operating state at standstill of the first consumer at least a part of the hydraulic oil from the primary circuit in the Secondary circuit for driving the second consumer is fed.
  • a hydraulic system of this kind is for example from the EP 1 995 155 A2 known.
  • Hydraulic systems of this type are used, for example, for driving and operating mobile thick matter pumps, which have arranged in the primary circuit hydraulic drive mechanism for the sludge pump and arranged in the secondary hydraulic drive and control mechanism for a trained example as articulated boom boom.
  • the drive mechanism of the slurry pump and the distributor boom is indeed operated simultaneously but independently via their respective hydraulic pumps.
  • the oil supply in the hydraulic circuits is limited by the oil supplied by the associated hydraulic pumps.
  • the present invention seeks to improve the known hydraulic system of the type specified in that an increased operating speed is made possible for specific tasks within the hydraulic system for a given pump power in the various hydraulic circuits.
  • the object of the invention is achieved in particular by the fact that the first consumer arranged in the primary circuit is expediently designed as a hydraulic drive mechanism of a slurry pump, while the second consumer arranged in the secondary circuit is designed as a drive and control mechanism of a distributor boom consisting of several fattening arms.
  • the inventive measure for example, for the automatic folding and unfolding of the distribution boom be used by oil from the main circuit of the slurry pump is supplied to the mast circle, for example via a suitable valve control.
  • the hydraulic drive mechanism of the slurry pump has two connected via a respective piston rod to a delivery cylinder hydraulic drive cylinder, which at one end via a main line with the at least one arranged in the primary circuit hydraulic pump and at its other end via a swing oil line are interconnected, wherein the primary circuit and the secondary circuit are connected to each other via a connecting line, in which a first, the oil flow selectively releasing or blocking control valve is arranged.
  • a first the oil flow selectively releasing or blocking control valve is arranged.
  • the oil flow to the tank selectively blocking or releasing control valve is expediently arranged within the primary circuit.
  • a further embodiment provides that within the primary circuit at least a third, the oil flow to the, from or between the hydraulic cylinders selectively blocking or releasing control valve is arranged.
  • a further advantageous embodiment of the invention provides that in the closed primary circuit at least one reversible and adjustable main pump and a pressure side in the primary circuit and the suction side opening into the tank feed pump is arranged.
  • a first embodiment variant provides in this case that the connecting line containing the control valve is branched off from one of the main lines of the primary circuit.
  • the main pump is activated in such a way that the pressure side of the main pump is connected to the relevant main line.
  • the piston of the drive cylinder connected to the main line concerned must be in its swing oil line be moved adjacent end position.
  • the connecting line containing the control valve is connected via a respective check valve to one of the main lines of the primary circuit.
  • a flow-releasing or blocking control valve may be arranged in the swing oil line between the hydraulic cylinders.
  • a further advantageous or alternative embodiment for this purpose may consist in that in the region of the end positions of the drive cylinder equipped with supply and Abspeiseventilen Hubaus GmbHsschleifen are arranged, and that in at least one of Hubaus somnsschleifen designed as a shut-off valve control valve or optionally connectable with the secondary circuit directional control valve is arranged ,
  • the hydraulic circuits shown in the drawing are intended for thick matter pumps having two delivery cylinders, not shown, whose frontal openings open into a material feed container and alternately be connected to a delivery line during the pressure stroke via a diverter valve.
  • the delivery cylinders are driven by hydraulic drive cylinders 7, 8, which are arranged in a first primary circuit I, in push-pull.
  • the drive piston of the drive cylinder 7,8 are connected via a common piston rod with the delivery piston in the delivery cylinders.
  • the drive cylinders 7, 8 form a first consumer in the primary circuit I, which also has a hydraulic drive unit comprising at least one motor-driven hydraulic pump 1, 2.
  • a secondary circuit II which has a second, another motor-driven hydraulic pump 22 comprehensive hydraulic drive unit.
  • the hydraulic consumers arranged in the primary circuit I and in the secondary circuit II can be acted upon independently of one another with hydraulic oil from a common tank 60 in a first operating state via their hydraulic drive units.
  • the primary circuit I with the drive cylinders 7,8 and the secondary circuit II with the mast control 24 Although simultaneously, but are driven separately from each other via their respective hydraulic pumps 1,2,22.
  • a special feature of the invention is that in a second operating state at standstill of the hydraulic cylinder 7.8 comprehensive consumer at least a portion of the hydraulic oil from the primary circuit I in the secondary circuit II can be fed to control the distribution boom. With this measure it is achieved that the extension and folding of the trained as articulated boom boom with stationary slurry pump can be performed by pressure oil supply from the primary circuit I faster.
  • the primary circuit I and the secondary circuit II are connected to one another via a connecting line 29 in which a first control valve 28 (optionally releasing or blocking the oil flow) is provided.
  • Fig. 1 to 4 . 6 to 8 ) or 35 ( Fig. 5 ) is arranged.
  • the embodiments according to Fig. 1 to 6 refer to hydraulic systems whose primary circuit I is designed as a closed hydraulic circuit.
  • the consumer-forming drive cylinders 7 and 8 are driven there via the main lines 17,18 via a reversible and adjustable main pump 1 in push-pull.
  • a suction side connected to the tank 60 feed pump 2 is provided, via which one of the outgoing at the Kir Hughesventil 5 amount of oil corresponding amount of oil through the connected to the main lines 17 and 18 check valves 3 and 4 again on the low pressure side of the main pump 1 is fed. Any excess amount flows via the pressure limiting valve 43 into the tank 60.
  • Trained as a mast circle secondary circuit II includes a hydraulic pump 22, which can be configured either as a constant or variable displacement.
  • the hydraulic pump 22 is connected on the suction side to the tank 60 and on the pressure side via the pressure line 23 to the load designed as a mast control 24.
  • Fig. 1 to 4 and 6 to 8 is in the connecting line 29 between the primary circuit I and secondary circuit II designed as a 2/2-way valve control valve 28 is provided.
  • the directional control valve 28 blocks the connection between the primary circuit I. and the pressure line 23 from leaks oil-free, while in the switched position, the connection is turned on.
  • the main pump 1 is activated so that in the case of Fig. 1 on the main line 17 is the pressure side. Therefore, there must be driven the piston 70 of the drive cylinder 7 in its rod-side end position.
  • two additional check valves 30 and 31 are provided, via which a connection can be made from the main lines 17 or 18 to the directional valve 28.
  • the main pump 1 can be selectively controlled so that either the main line 17 or the main line 18, the pressure side. If the pressure side on the main line 18, the piston must be moved in the drive cylinder 8 in its rod-side end position.
  • an additional designed as a shut-off valve control valve 32 is provided, which leads to the tank 60 in the non-actuated state via the Kirndventil 5 and the pressure relief valve 6 escaped oil.
  • the control valve 32 is driven. As a result, the connection to the tank 60 is blocked, so that no more oil can be fed to the tank 60. This is the complete amount of oil of the feed pump 2 via the main pump 1 for feeding to the secondary circuit II available.
  • an additional shut-off valve 34 is provided between the throttle 16 and the check valve 13 of the Hubaus Heidelbergsschleife.
  • the piston 70 is located in the drive cylinder 7 in its rod-side end position and is built up due to the supply to the secondary circuit II (mast circle) pressure, oil flows from the main line 17 through the throttle 16, the connecting line 19 and the check valves 13,11 on the low pressure side 18. This oil is thus the feed not available for mast circle.
  • the valve 34 In the non-activated state, the valve 34 is open. If the valve 34 is activated, no more oil can flow away and the complete oil quantity of the feed pump 2 is available for feeding into the secondary circuit.
  • a control valve 35 designed as a directional control valve is alternatively provided in the stroke compensation loop of the cylinder 7.
  • oil can flow via the throttle 16 and the check valve 13.
  • the directional control valve 35 is activated and the piston 70 is located in the drive cylinder 7 in its rod-side end position, a connection of the main line 17 via the drive cylinder 7 and the line 29 to the pressure line 23 of the secondary circuit II (mast circle) is produced.
  • the supply to the low pressure side via the throttle 16 and the check valve 13 is locked. Thus, no more oil can flow, so that the complete amount of oil of the feed pump 2 of the feed is available.
  • an additional shut-off valve 33 is provided in the swing oil line 19.
  • the shut-off valve 33 connects the drive cylinders 7 and 8, so that they can perform the conveying cycle described above. If the shut-off valve 33 is activated, the connection is blocked by the swing oil line 19, so that the pistons 70, 80 in the drive cylinders 7, 8 can no longer travel. Also, the oil balance due to the leakage in the drive cylinders 7,8 can no longer take place. As a result, pressure in the drive cylinders 7, 8 and in the main lines 17, 18 can be established by the main pump 1 in any position of the pistons 70, 80.
  • the pressure relief valve 52 which via the check valves 53 and 54 is connected to the pressure chambers between the drive cylinders 7,8 and the shut-off valve 33, prevents inadmissibly high pressures with the shut-off valve 33 closed, which could occur due to the pressure ratio in the drive cylinders 7,8.
  • an open primary circuit I is provided for driving the concrete pump.
  • Fig. 7 sucks the main pump 44 via the suction line 48, the oil directly from the tank 60.
  • a reversing valve 36 which either the main line 47 with the working line 17 'or 18' and not connected line 18 'or 17' connects to the tank 60.
  • the pistons 70,80 in the drive cylinders 7 and 8 then proceed in push-pull as described above.
  • the reversing valve 36 is driven in the opposite direction.
  • the main pump 44 has an electrically proportional (EP) adjusting device 45. Should in the case of Fig.
  • both the mast pump 22 with controller 37 and the main pump 44 with controller 46 load-sensing LS
  • a directional control valve 38 is provided, via which either the load pressure of the drive cylinders 7, 8 reported via the line 41 or the load pressure of the mast control reported via the line 42 is fed to the load-sensing regulator (LS) 46 of the main pump 44.
  • LS load-sensing regulator
  • the high pressure of the hydraulic pump compared with the load pressure and kept constant the difference of the two pressures via an adjusting.
  • the adjusting mechanism ensures that the oil quantity is independent of the load pressure.
  • the load pressure of the drive cylinder 7,8 is tapped via the shuttle valve 37 selectively from the working line 17 'or 18'.
  • the load pressure of the drive cylinders 7 and 8 goes to the regulator 46 of the main pump 44. This regulates the pressure difference at the adjusting throttle 50, with which the speed of the pistons 70, 80 in the drive cylinders 7 and 8 are adjusted independently of the load pressure can. If hydraulic oil from the primary circuit I is to be fed to the secondary circuit II, the controller 46 of the main pump 44 is notified of the load pressure of the mast control by actuating the valve 38 via the line 42. This regulates load pressure independent, the pressure difference at the variable throttle 51, with which the amount of supplied hydraulic oil can be adjusted.
  • the invention relates to a hydraulic system, preferably for driving and operating a mobile slurry pump.
  • the hydraulic system comprises a primary hydraulic circuit I driving a first hydraulic consumer, which has a hydraulic drive unit comprising at least one motor-driven hydraulic pump 1, 2, 4.
  • a secondary hydraulic circuit II controlling a second hydraulic consumer is provided, which has a second, at least one further motor-driven hydraulic pump 22 comprising a hydraulic drive unit.
  • the arranged in the primary circuit I and the secondary circuit II hydraulic consumers 7,8; 24 are independent in a first operating state of their hydraulic drive units from each other with hydraulic oil from a common tank 60 acted upon.
  • a special feature of the invention is that in a second operating state at standstill of the first consumer 7.8 at least a portion of the hydraulic oil from the primary circuit I in the secondary circuit II is fed to drive the second load 24.
  • first consumer 7,8 is designed as a hydraulic drive mechanism of the slurry pump, while arranged in the secondary circuit II second consumer 24 is designed as a drive and control mechanism of a plurality of Mastarmen distribution boom.

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

Claims (9)

  1. Système hydraulique comprenant un circuit primaire (I) commandant un premier consommateur hydraulique (7, 8), circuit primaire qui comporte un premier groupe d'entraînement hydraulique comprenant au moins une pompe hydraulique (1, 2, 44) entraînée par un moteur, comprenant un circuit secondaire (II) commandant un second consommateur hydraulique (24), circuit secondaire qui comporte un second groupe d'entraînement hydraulique comprenant une autre pompe hydraulique (22) entraînée par un moteur, dans lequel les consommateurs hydrauliques situés dans le circuit primaire (I) et dans le circuit secondaire (II) sont, dans un premier état de fonctionnement, alimentés en huile hydraulique venant d'un réservoir (60) indépendamment l'un de l'autre et par l'intermédiaire de leurs groupes d'entraînement hydraulique, et au moins une partie de l'huile hydraulique est amenée, dans un second état de fonctionnement, lorsque le premier consommateur (7, 8) est à l'arrêt, du circuit primaire (I) au circuit secondaire (II) pour commander le second consommateur (24), caractérisé en ce que le premier consommateur (7, 8) situé dans le circuit primaire (I) est exécuté en tant que mécanisme d'entraînement hydraulique d'une pompe à matières épaisses, tandis que le second consommateur (24) situé dans le circuit secondaire (II) est exécuté en tant que mécanisme d'entraînement et de commande d'un mât distributeur de la pompe à matières épaisses constitué de plusieurs bras de mât, dans lequel l'alimentation de l'huile hydraulique dans le circuit secondaire, dans le second état de fonctionnement, lorsque la pompe hydraulique (22) fonctionne, s'effectue de façon que le déploiement et le pliage du mât distributeur puissent être exécutés plus rapidement, la pompe à matières épaisses étant à l'arrêt.
  2. Système hydraulique selon la revendication 1, caractérisé en ce que le mécanisme d'entraînement hydraulique de la pompe à matières épaisses comporte deux vérins d'entraînement hydrauliques (7, 8) reliés à un cylindre de refoulement par le biais respectif d'une tige de piston, vérins qui sont reliés, à une extrémité, à l'au moins une pompe hydraulique (1, 2) située dans le circuit primaire (I) par le biais respectif d'une conduite principale (17, 18) et reliés l'un à l'autre, à leur autre extrémité, par le biais d'une conduite d'huile oscillante (19), et en ce que le circuit primaire (I) et le circuit secondaire (II) sont reliés l'un à l'autre par le biais d'une conduite de liaison (29) dans laquelle est disposée une première vanne de commande (28, 35) qui libère ou bloque sélectivement le flux d'huile.
  3. Système hydraulique selon la revendication 2, caractérisé en ce qu'au moins une deuxième vanne de commande (5, 32, 36) qui bloque ou libère sélectivement le flux d'huile vers le réservoir est disposée à l'intérieur du circuit primaire (I).
  4. Système hydraulique selon la revendication 2 ou 3, caractérisé en ce qu'au moins une troisième vanne de commande (33, 36) qui bloque ou libère sélectivement le flux d'huile vers les vérins hydrauliques, depuis les vérins hydrauliques ou entre les vérins hydrauliques est disposée à l'intérieur du circuit primaire (I).
  5. Système hydraulique selon la revendication 2, caractérisé en ce qu'au moins une pompe principale (1) réversible et réglable, ainsi qu'une pompe d'alimentation (2) débouchant dans le circuit primaire (I) côté refoulement et dans le réservoir (60) côté aspiration, est disposée dans le circuit primaire (I) fermé.
  6. Système hydraulique selon la revendication 5, caractérisé en ce que la conduite de liaison (29) contenant la vanne de commande (28) est dérivée de l'une des conduites principales (17) du circuit primaire (I).
  7. Système hydraulique selon la revendication 5, caractérisé en ce que la conduite de liaison (20) contenant la vanne de commande (28) est connectée à l'une des conduites principales (17, 18) du circuit primaire (I) par le biais respectif d'un clapet anti-retour (30, 31).
  8. Système hydraulique selon l'une des revendications 2 à 7, caractérisé en ce qu'une vanne de commande (33) libérant ou bloquant l'écoulement est disposée dans la conduite d'huile oscillante (19) entre les vérins hydrauliques.
  9. Système hydraulique selon l'une des revendications 2 à 8, caractérisé en ce que des boucles de compensation de course munies de vannes de vidange et de remplissage sont disposées dans la zone des fins de course des pistons (70, 80) dans les vérins d'entraînement (7, 8), et en ce qu'une vanne de commande (34) exécutée en tant que soupape d'arrêt ou un distributeur (35) pouvant être relié sélectivement au circuit secondaire (II) est disposé/e dans au moins une des boucles de compensation de course.
EP13711642.2A 2012-05-31 2013-03-20 Méthode pour l'opération d'un système hydraulique Active EP2855945B2 (fr)

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DE102012209142A DE102012209142A1 (de) 2012-05-31 2012-05-31 Hydrauliksystem
PCT/EP2013/055747 WO2013178373A1 (fr) 2012-05-31 2013-03-20 Système hydraulique

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EP (1) EP2855945B2 (fr)
JP (1) JP6214639B2 (fr)
KR (2) KR20150018768A (fr)
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DE (1) DE102012209142A1 (fr)
TR (1) TR201806948T4 (fr)
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EP2855945B2 (fr) 2023-11-01
KR102166576B1 (ko) 2020-10-19
US20150096290A1 (en) 2015-04-09
JP6214639B2 (ja) 2017-10-18
WO2013178373A1 (fr) 2013-12-05
US10273984B2 (en) 2019-04-30
CN104508307B (zh) 2016-12-28
DE102012209142A1 (de) 2013-12-05
EP2855945A1 (fr) 2015-04-08
TR201806948T4 (tr) 2018-06-21
JP2015518945A (ja) 2015-07-06
KR20200099214A (ko) 2020-08-21
KR20150018768A (ko) 2015-02-24
CN104508307A (zh) 2015-04-08

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