EP3159549B1 - Device for recovery of hydraulic energy in a work device and corresponding work device - Google Patents

Device for recovery of hydraulic energy in a work device and corresponding work device Download PDF

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Publication number
EP3159549B1
EP3159549B1 EP16188813.6A EP16188813A EP3159549B1 EP 3159549 B1 EP3159549 B1 EP 3159549B1 EP 16188813 A EP16188813 A EP 16188813A EP 3159549 B1 EP3159549 B1 EP 3159549B1
Authority
EP
European Patent Office
Prior art keywords
working cylinder
pump
implement
energy
boom
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
EP16188813.6A
Other languages
German (de)
French (fr)
Other versions
EP3159549A1 (en
Inventor
Frank Helbling
Thomas Landmann
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.)
Liebherr France SAS
Original Assignee
Liebherr France SAS
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Publication date
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Publication of EP3159549A1 publication Critical patent/EP3159549A1/en
Application granted granted Critical
Publication of EP3159549B1 publication Critical patent/EP3159549B1/en
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/40—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with a single prime mover for both crane and vehicle
    • 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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • 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
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • 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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative 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
    • 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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • 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
    • 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
    • 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
    • F15B7/008—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with rotary output
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • 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
    • F15B2201/00—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
    • F15B2211/20—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
    • F15B2211/2053—Type of pump
    • F15B2211/20569—Type of pump capable of working as pump and motor
    • 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
    • F15B2211/212—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
    • F15B2211/20—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
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-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
    • F15B2211/305—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
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • 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
    • F15B2211/31535—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 multiple pressure sources 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
    • F15B2211/60—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
    • F15B2211/60—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
    • F15B2211/705—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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary 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
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
    • 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
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/76—Control of force or torque of the output member
    • F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy
    • 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
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
    • F15B2211/8636—Circuit failure, e.g. valve or hose failure
    • 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 device for recovering hydraulic energy in a working device and a corresponding working device itself.
  • the unpre-released EP 3 205 780 A1 discloses a known device.
  • a device for recovering hydraulic energy in a working device having the features of claim 1 and by a working device having the features of claim 8 is provided with a mooring pump, which can be used as a pump or as a motor, with a high-pressure accumulator and with a working cylinder and a throttle differential circuit for connecting the bottom side of the working cylinder to the rod side of the working cylinder of the implement, the device being such is designed so that when pressure is applied to the working cylinder by lowering a boom of the working device, hydraulic fluid flows out of the working cylinder into three areas, with the mooring pump working in engine operation in the first area and driving several pumps via a gearbox, with the high-pressure accumulator in the second area storing pressure energy stores and in the third area, the hydraulic fluid flowing out of the bottom side or the rod side of the working cylinder at least partially fills the respective other side of the working cylinder.
  • the side of the working cylinder means either the rod side or the bottom side of the working cylinder.
  • the other consumers can mean all other consumers of a working device.
  • the structure of the device mentioned advantageously ensures that a single high-pressure accumulator can be used as a shared accumulator for a slewing gear and the boom or their actuators.
  • the slewing gear can be driven via the stored energy of the high-pressure accumulator and/or by a slewing gear pump.
  • braking energy can be directed to the high-pressure accumulator from a slewing gear motor or drive, which operates as a pump during braking.
  • the device according to the invention also represents a simple variant of the recovery of hydraulic energy, which enables hybridization of an implement without a corresponding recovery device, with the superstructure of the implement not having to be changed significantly and corresponding retrofitting being possible without any problems.
  • the arrangement of the device according to the invention also means that, compared to the prior art, only a small number of valves are required to recover the energy.
  • the working cylinder in a particularly preferred exemplary embodiment, it is conceivable for the working cylinder to be a boom cylinder for a boom of the implement.
  • the working cylinder When the boom is lowered from an elevated position to a lower position, the largest possible amount of potential energy can thus be recuperated via the energy recovery device, especially when the boom is loaded. This is due to the fact that in the case of working devices, the greatest use of energy often takes place in the area of the boom and the loads moved by it, and therefore the greatest amounts of energy can also be recuperated.
  • the throttle differential circuit to include a throttle between the base side and the rod side of the working cylinder.
  • the pressure level for direct filling of the high-pressure accumulator can advantageously be raised, with the bottom side of the cylinder being able to be connected to the rod side of the cylinder via the differential circuit.
  • the connection from the cap to the rod side can be choked off to prevent overpressure on the cylinder base side.
  • this solution reduces the amount of oil that flows to the accumulator or high-pressure accumulator or to the pump or mooring pump by about half.
  • the hydraulic fluid in the third area flows from the base side into the rod side and in a further preferred exemplary embodiment it is conceivable that the mooring Pump works in open circuit. Furthermore, in a preferred exemplary embodiment, it is conceivable for the hydraulic fluid to flow into one, two or three of the areas simultaneously or in parallel. In this way, the energy recovery can be set flexibly depending on the energy to be recovered and the energy consumption at other consumers.
  • a hydraulic slewing gear pump is provided for driving a slewing gear of the implement.
  • the boom of the working device can be boosted even if further parallel movements, for example of the slewing gear, are taking place.
  • the high-pressure accumulator can also be charged while other movements, such as movements of the slewing gear, are controlled in parallel without disturbing these movements.
  • the energy stored in the high-pressure accumulator can be used in the boom and in a slewing gear of the implement to drive corresponding pumps that are operated as a motor.
  • the slewing gear pump can advantageously act as a motor and apply energy to corresponding units of the diesel engine or directly to other pumps of the implement.
  • the invention also relates to a working device, in particular a hydraulic excavator, with a device according to one of Claims 1 to 7.
  • the device according to the invention utilizes the potential energy of the boom when lowering the boom of a working device in the form of a correspondingly pressurized oil flow through the three-way recuperation taking place at three points or areas.
  • the device of figure 2 differs from the other two devices in that the hydraulics of the implement can be operated in three independent circuits when working without a slewing gear (e.g. digging an excavator without using a slewing gear).
  • the device not belonging to the invention figure 3 differs from the other two devices in that the slewing gear pump is a standard pump. This is easier to operate and less expensive than a closed loop slewing pump or mooring pump, but has the disadvantage that it can only be used as a pump.
  • figure 1 shows a device according to the invention, in which the oil flow is guided from the bottom side of a working cylinder 100 via the control axis 10 to the rod side of the working cylinder 100.
  • the excess oil is fed into pump line 60 .
  • Feeding in on the rod side leads to an increase in pressure on the bottom side, which is useful for direct accumulator filling of the high-pressure accumulator 40 .
  • the connection to the rod side can be throttled in the control axis 10. This can be controlled electronically. There is thus an energy recuperation in the Rod side of the working cylinder 100 by the throttle differential circuit described.
  • energy can also be recuperated by directly filling the high-pressure accumulator 40 .
  • a partial flow of oil from the pump line 60 can be branched off directly via the valve axis 30 to fill the high-pressure accumulator 40 .
  • the energy recuperation can also take place via the mooring pump 21, with all or part of the oil flow from the pump line 60 driving the mooring pump 21, which is working as a motor at this point in time.
  • the energy that is released in the process is passed on to other pumps and/or to a diesel engine of the implement via a transmission, where it is used accordingly to drive other consumers, to fill accumulators or to compensate for a towing load.
  • the control of the standard cantilever axis 11 enables a boost when lowering or normal operation in the event of a failure of the recuperation system according to the invention.
  • the boost the oil flow is routed from the bottom side of the working cylinder 100 via the control axis 11 to the tank.
  • the boom is in free fall.
  • the control axis 11 is used to control the lifting cylinder.
  • the oil flow is directed from the pump line 60 via the control shaft 11 to the lifting cylinder and the returning oil flow from the lifting cylinder is directed via the control shaft 11 to the tank.
  • the control of the standard cantilever axis 11 enables a boost when lowering or normal operation in the event of a failure of the recuperation system according to the invention.
  • the mooring pump 21 operates in normal pumping mode when the boom is not being lowered.
  • an algorithm can determine the path of recuperation or determine into which areas the hydraulic fluid is directed to carry out recuperation. Several or all three paths or areas can be selected at the same time.
  • An advantage of the device according to the invention with its three different recuperation areas is that only a single high-pressure accumulator 40 has to or can be used and no lossy energy transfer between different accumulators has to take place.
  • the high-pressure storage can also take place at any time and, due to the separate slewing gear pump 22, 25, can also be carried out in parallel with other work or slewing gear movements.
  • the working pump or mooring pump 21 can supply all consumers and in particular the boom, the arm or the drive of the working device.
  • the slewing gear pump 22, 25 can be designed as a mooring pump 21.
  • the device according to the invention is particularly efficient because the oil flow can be divided into three paths in three-way recuperation.
  • the oil flow can flow to the mooring pump 21, to the high-pressure accumulator 40 and to the rod side of the working cylinder 100.
  • the entire oil flow does not have to flow through the pump, so that the components required for recuperation, in particular the pump or mooring pump 21, can be dimensioned to be smaller or more compact and cheaper, and as a result there are lower pressure losses in the device. Due to the areas for recuperation, which are designed in three independent hydraulic circuits, there is no need to adjust the pressure during recuperation, which means that no pressure losses have to be accepted.
  • the high-pressure accumulator 40 can be charged even if other movements of the implement are controlled in parallel. These movements are not influenced by the charging of the high-pressure accumulator 40. Furthermore, the boom can be accelerated using a standard piston.
  • the working device which can be designed in particular as an excavator, can also continue to be operated in the event of malfunctions in the recuperation system, since the recuperation system shown represents an add-on solution.

Description

Die Erfindung betrifft eine Vorrichtung zur Rückgewinnung hydraulischer Energie bei einem Arbeitsgerät und ein entsprechendes Arbeitsgerät selbst.The invention relates to a device for recovering hydraulic energy in a working device and a corresponding working device itself.

Bei aus dem Stand der Technik bekannten Vorrichtungen zur Rückgewinnung hydraulischer Energie von Arbeitsmaschinen ist es bisher bekannt, Arbeitspumpen zu nutzen, die sowohl einen Ausleger des Arbeitsgeräts als auch ein Drehwerk des Arbeitsgeräts mit Hydraulikfluid versorgen. Dabei ist es zur Rückgewinnung von hydraulischer Energie bekannt, eigene Hochdruckspeicher für den Ausleger und getrennt davon für das Drehwerk oder Druckspeicher mit unterschiedlichen Arbeitsdrücken bereitzustellen. Nachteilig an den aus dem Stand der Technik bekannten Vorrichtungen ist, dass dabei separate Stellglieder und ein separates Management bzw. eine separate Regelung/Steuerung zum Austausch der Energie zwischen den getrennten Druckspeichern erforderlich sind. Nachteilig kann auch sein, dass zur Rekuperation von Energie keine Differentialschaltung an den entsprechenden Aktoren vorgesehen ist, so dass zwingend die Nutzung einer Pumpe zur Durchführung der Rekuperation erforderlich ist.In devices known from the prior art for recovering hydraulic energy from working machines, it has hitherto been known to use working pumps that supply hydraulic fluid to both a boom of the working machine and a slewing gear of the working machine. In order to recover hydraulic energy, it is known to provide separate high-pressure accumulators for the boom and separately for the slewing gear or pressure accumulator with different working pressures. A disadvantage of the devices known from the prior art is that separate actuators and separate management or separate regulation/control are required for the exchange of energy between the separate pressure accumulators. It can also be disadvantageous that no differential circuit is provided on the corresponding actuators for the recuperation of energy, so that the use of a pump to carry out the recuperation is absolutely necessary.

Die nicht vorveröffentliche EP 3 205 780 A1 offenbart eine bekannte Vorrichtung.The unpre-released EP 3 205 780 A1 discloses a known device.

Aufgabe der Erfindung ist es daher, eine gattungsgemäße Vorrichtung bereitzustellen, die einfacher im Aufbau ist als die aus dem Stand der Technik bekannten Vorrichtungen und die flexibler und effizienter als diese genutzt werden kann.It is therefore the object of the invention to provide a generic device which is simpler in construction than the devices known from the prior art and which can be used more flexibly and efficiently than these.

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung zur Rückgewinnung hydraulischer Energie bei einem Arbeitsgerät mit den Merkmalen des Anspruchs 1 sowie durch ein Arbeitsgerät mit den Merkmalen des Anspruchs 8 gelöst. Demnach ist eine Vorrichtung mit einer Mooring Pumpe vorgesehen, welche als Pumpe oder als Motor genutzt werde kann, mit einem Hochdruckspeicher sowie mit einem Arbeitszylinder und einer Drossel-Differentialschaltung zum Verbindung der Bodenseite des Arbeitszylinders mit der Stangenseite des Arbeitszylinders des Arbeitsgeräts, wobei die Vorrichtung derart ausgebildet ist, dass bei Anliegen von Druck am Arbeitszylinder durch Senken eines Auslegers des Arbeitsgeräts Hydraulikflüssigkeit aus dem Arbeitszylinder in drei Bereiche fließt, wobei im ersten Bereich die Mooring Pumpe im Motorbetrieb arbeitet und über ein Getriebe mehrere Pumpen antreibt, wobei im zweiten Bereiche der Hochdruckspeicher Druckenergie speichert und wobei im dritten Bereich die aus der Bodenseite oder der Stangenseite des Arbeitszylinders strömende Hydraulikflüssigkeit wenigstens teilweise die jeweils andere Seite des Arbeitszylinders befüllt.According to the invention, this object is achieved by a device for recovering hydraulic energy in a working device having the features of claim 1 and by a working device having the features of claim 8 . Accordingly, a device is provided with a mooring pump, which can be used as a pump or as a motor, with a high-pressure accumulator and with a working cylinder and a throttle differential circuit for connecting the bottom side of the working cylinder to the rod side of the working cylinder of the implement, the device being such is designed so that when pressure is applied to the working cylinder by lowering a boom of the working device, hydraulic fluid flows out of the working cylinder into three areas, with the mooring pump working in engine operation in the first area and driving several pumps via a gearbox, with the high-pressure accumulator in the second area storing pressure energy stores and in the third area, the hydraulic fluid flowing out of the bottom side or the rod side of the working cylinder at least partially fills the respective other side of the working cylinder.

Mit der Seite des Arbeitszylinders ist dabei entweder die Stangen- oder die Bodenseite des Arbeitszylinders gemeint. Mit den weiteren Verbrauchern können alle sonstigen Verbraucher eines Arbeitsgeräts gemeint sein. Vorteilhaft wird durch den genannten Aufbau der Vorrichtung sichergestellt, dass ein einziger Hochdruckspeicher als gemeinsamer Speicher für ein Drehwerk und den Ausleger bzw. deren Aktuatoren genutzt werden kann. Das Drehwerk kann dabei über die Speicherenergie des Hochdruckspeichers und/oder von einer Drehwerkspumpe angetrieben werden. Beim Abbremsen eines Oberwagens des Arbeitsgeräts wie beispielsweise eines Baggeroberwagens kann Bremsenergie von einem Drehwerksmotor bzw. -antrieb, der beim Abbremsen als Pumpe arbeitet, zum Hochdruckspeicher geleitet werden. Da die Arbeitspumpe als Mooring Pumpe ausgebildet ist und damit auch als Energierekuperationspumpe fungieren kann ist weiterhin vorteilhaft kein Bauraum für eine ansonsten erforderliche zusätzliche Pumpe notwendig. Die erfindungsgemäße Vorrichtung stellt ferner eine einfache Variante der Rückgewinnung hydraulischer Energie dar, welche eine Hybridisierung eines Arbeitsgeräts ohne entsprechende Rückgewinnungsvorrichtung ermöglicht, wobei die Oberwagen-Baustruktur des Arbeitsgeräts nicht wesentlich verändert werden muss und eine entsprechende Nachrüstung umstandslos möglich ist. Auch bedeutet die erfindungsgemäße Anordnung der Vorrichtung, dass eine im Vergleich zum Stand der Technik nur geringe Anzahl von Ventilen zur Rückgewinnung der Energie erforderlich ist.The side of the working cylinder means either the rod side or the bottom side of the working cylinder. The other consumers can mean all other consumers of a working device. The structure of the device mentioned advantageously ensures that a single high-pressure accumulator can be used as a shared accumulator for a slewing gear and the boom or their actuators. The slewing gear can be driven via the stored energy of the high-pressure accumulator and/or by a slewing gear pump. When braking an upper structure of the implement, such as an excavator upper structure, braking energy can be directed to the high-pressure accumulator from a slewing gear motor or drive, which operates as a pump during braking. Since the working pump is designed as a mooring pump and can therefore also function as an energy recuperation pump, there is no space for it an otherwise required additional pump necessary. The device according to the invention also represents a simple variant of the recovery of hydraulic energy, which enables hybridization of an implement without a corresponding recovery device, with the superstructure of the implement not having to be changed significantly and corresponding retrofitting being possible without any problems. The arrangement of the device according to the invention also means that, compared to the prior art, only a small number of valves are required to recover the energy.

In einem besonders bevorzugten Ausführungsbeispiel ist denkbar, dass der Arbeitszylinder ein Auslegerzylinder für einen Ausleger des Arbeitsgeräts ist. Damit kann beim Absenken des Auslegers von einer erhöhten Position in eine niedrigere Position insbesondere auch bei beladenem Ausleger ein möglichst großer Betrag potenzieller Energie über die Energierückgewinnungsvorrichtung rekuperiert werden. Dies ist dadurch bedingt, dass bei Arbeitsgeräten häufig im Bereich des Auslegers und der von diesem bewegten Lasten der größte Energieeinsatz erfolgt und damit auch die größten Mengen an Energie rekuperiert werden können.In a particularly preferred exemplary embodiment, it is conceivable for the working cylinder to be a boom cylinder for a boom of the implement. When the boom is lowered from an elevated position to a lower position, the largest possible amount of potential energy can thus be recuperated via the energy recovery device, especially when the boom is loaded. This is due to the fact that in the case of working devices, the greatest use of energy often takes place in the area of the boom and the loads moved by it, and therefore the greatest amounts of energy can also be recuperated.

In einem weiteren bevorzugten Ausführungsbeispiel ist denkbar, dass die Drossel-Differentialschaltung eine Drossel zwischen der Bodenseite und der Stangenseite des Arbeitszylinders umfasst. Hierdurch kann vorteilhaft das Druckniveau zur direkten Befüllung des Hochdruckspeichers angehoben werden, wobei die Bodenseite des Zylinders mit der Stangenseite des Zylinders über die Differentialschaltung verbunden werden kann. Um Überdruck an der Zylinderbodenseite zu verhindern, kann die Verbindung von der Boden- zur Stangenseite abgedrosselt werden. Gleichzeitig wird durch diese Lösung die Ölmenge, welche zum Speicher bzw. zum Hochdruckspeicher oder zur Pumpe bzw. Mooring Pumpe fließt um ca. die Hälfte reduziert.In a further preferred exemplary embodiment, it is conceivable for the throttle differential circuit to include a throttle between the base side and the rod side of the working cylinder. As a result, the pressure level for direct filling of the high-pressure accumulator can advantageously be raised, with the bottom side of the cylinder being able to be connected to the rod side of the cylinder via the differential circuit. The connection from the cap to the rod side can be choked off to prevent overpressure on the cylinder base side. At the same time, this solution reduces the amount of oil that flows to the accumulator or high-pressure accumulator or to the pump or mooring pump by about half.

In einem weiteren bevorzugten Ausführungsbeispiel ist denkbar, dass die Hydraulikflüssigkeit im dritten Bereich von der Bodenseite in die Stangenseite strömt und in einem weiteren bevorzugten Ausführungsbeispiel ist denkbar, dass die Mooring Pumpe im offenen Kreislauf arbeitet. Weiterhin ist in einem bevorzugten Ausführungsbeispiel denkbar, dass die Hydraulikflüssigkeit in einen, zwei oder drei der Bereiche gleichzeitig oder parallel fließt. Die Energierückgewinnung kann auf diese Art in Abhängigkeit von der anfallenden rückzugewinnenden Energie und des Energieverbrauchs an anderen Verbrauchern flexibel eingestellt werden.In a further preferred exemplary embodiment it is conceivable that the hydraulic fluid in the third area flows from the base side into the rod side and in a further preferred exemplary embodiment it is conceivable that the mooring Pump works in open circuit. Furthermore, in a preferred exemplary embodiment, it is conceivable for the hydraulic fluid to flow into one, two or three of the areas simultaneously or in parallel. In this way, the energy recovery can be set flexibly depending on the energy to be recovered and the energy consumption at other consumers.

Erfindungsgemäß ist eine hydraulische Drehwerkspumpe zum Antreiben eines Drehwerks des Arbeitsgeräts vorgesehen.According to the invention, a hydraulic slewing gear pump is provided for driving a slewing gear of the implement.

Durch eine derartige separate Pumpe zum Antreiben des Drehwerks kann der Ausleger des Arbeitsgeräts geboostet werden auch wenn noch weitere Parallelbewegungen beispielsweise des Drehwerks stattfinden. Ebenfalls kann der Hochdruckspeicher geladen werden, während gleichzeitig andere Bewegungen wie beispielsweise Bewegungen des Drehwerks parallel gesteuert werden ohne diese Bewegungen zu stören.With such a separate pump for driving the slewing gear, the boom of the working device can be boosted even if further parallel movements, for example of the slewing gear, are taking place. The high-pressure accumulator can also be charged while other movements, such as movements of the slewing gear, are controlled in parallel without disturbing these movements.

Erfindungsgemäß ist Speicherenergie des Hochdruckspeichers über die Drehwerkspumpe an die anderenAccording to the invention, storage energy of the high-pressure accumulator is transferred to the others via the slewing gear pump

Pumpen und/oder an einen Dieselmotor übertragbar. Allgemein kann die im Hochdruckspeicher gespeicherte Energie im Ausleger und in einem Drehwerk des Arbeitsgeräts zum Antreiben entsprechender als Motor betriebener Pumpen genutzt werden. Hierbei kann die Drehwerkspumpe entsprechend vorteilhaft als Motor wirken und entsprechende Aggregate des Dieselmotors oder direkt andere Pumpen des Arbeitsgeräts mit Energie beaufschlagen.Pumps and/or transferrable to a diesel engine. In general, the energy stored in the high-pressure accumulator can be used in the boom and in a slewing gear of the implement to drive corresponding pumps that are operated as a motor. In this case, the slewing gear pump can advantageously act as a motor and apply energy to corresponding units of the diesel engine or directly to other pumps of the implement.

Ferne kann vorgesehen sein, dass beim Ausfall der Vorrichtung eine Notfunktion zum Betrieb des Arbeitsgeräts vorgesehen ist.Provision can also be made for an emergency function to operate the working device if the device fails.

Die Erfindung richtet sich auch auf ein Arbeitsgerät insbesondere auf einen Hydraulikbagger, mit einer Vorrichtung nach einem der Ansprüche 1 bis 7.The invention also relates to a working device, in particular a hydraulic excavator, with a device according to one of Claims 1 to 7.

Weitere Einzelheiten und Vorteile der Erfindung sind Anhand der Figuren aufgezeigt. Dabei zeigen:

  • Figur 1: Schematische Darstellung einer erfindungsgemäßen Vorrichtung bei der eine Drehwerkspumpe im geschlossenen Kreislauf betrieben ist;
  • Figur 2: Schematische Darstellung einer erfindungsgemäßen Vorrichtung bei der eine Drehwerkspumpe im offenen Kreislauf als Mooring Pumpe betrieben ist; und
  • Figur 3: Schematische Darstellung einer nicht zur Erfindung gehörenden Vorrichtung bei der eine Drehwerkspumpe im offenen Kreislauf als Standard-Pumpe betrieben ist.
Further details and advantages of the invention are shown on the basis of the figures. show:
  • figure 1 : Schematic representation of a device according to the invention in which a slewing gear pump is operated in a closed circuit;
  • figure 2 : Schematic representation of a device according to the invention in which a slewing gear pump is operated in an open circuit as a mooring pump; and
  • figure 3 : Schematic representation of a device not belonging to the invention, in which a slewing gear pump is operated in an open circuit as a standard pump.

Durch die erfindungsgemäße Vorrichtung wird beim Senken des Auslegers eines Arbeitsgeräts die potenzielle Energie des Auslegers in Form eines entsprechend druckbeaufschlagten Ölstroms durch die an drei Stellen bzw. Bereichen erfolgende Drei-Wege-Rekuperation verwertet. Dieses ist den Ausführungsformen der drei Figuren gleich. Die Vorrichtung der Figur 2 unterscheidet sich von den beiden anderen Vorrichtungen, dass hierbei die Hydraulik des Arbeitsgeräts beim Arbeiten ohne Drehwerk (z.B. Graben eines Baggers ohne Nutzung eines Drehwerks) in drei unabhängigen Kreisläufen betrieben werden kann. Die zur Erfindung nicht gehörende Vorrichtung der Figur 3 unterscheidet sich von den beiden anderen Vorrichtungen, indem die Drehwerkspumpe eine Standard-Pumpe ist. Dies ist einfacher zu betreiben und kostengünstiger als eine Drehwerkspumpe im geschlossenen Kreislauf oder eine Mooring Pumpe, hat aber den Nachteil, dass sie nur als Pumpe genutzt werden kann.The device according to the invention utilizes the potential energy of the boom when lowering the boom of a working device in the form of a correspondingly pressurized oil flow through the three-way recuperation taking place at three points or areas. This is the same as the embodiments of the three figures. The device of figure 2 differs from the other two devices in that the hydraulics of the implement can be operated in three independent circuits when working without a slewing gear (e.g. digging an excavator without using a slewing gear). The device not belonging to the invention figure 3 differs from the other two devices in that the slewing gear pump is a standard pump. This is easier to operate and less expensive than a closed loop slewing pump or mooring pump, but has the disadvantage that it can only be used as a pump.

Anhand von Figur 1 soll nun das genauere Funktionieren der erfindungsgemäßen Vorrichtung erläutert werden.Based on figure 1 the more precise functioning of the device according to the invention will now be explained.

Figur 1 zeigt eine erfindungsgemäße Vorrichtung, bei der der Ölstrom von der Bodenseite eines Arbeitszylinders 100 über die Steuerachse 10 zur Stangenseite des Arbeitszylinders 100 geleitet wird. Das überschüssige Öl wird in die Pumpenleitung 60 eingespeist. Die Einspeisung auf der Stangenseite führt zur Druckerhöhung auf der Bodenseite, welche der direkten Speicherbefüllung des Hochdruckspeichers 40 dienlich ist. Um Überdruck auf der Bodenseite zu verhindern, kann die Verbindung zur Stangenseite in der Steuerachse 10 gedrosselt werden. Die Steuerung hierzu kann elektronisch erfolgen. Es ergibt sich somit eine Energierekuperation in der Stangenseite des Arbeitszylinders 100 durch die beschriebene Drossel-Differentialschaltung. figure 1 shows a device according to the invention, in which the oil flow is guided from the bottom side of a working cylinder 100 via the control axis 10 to the rod side of the working cylinder 100. The excess oil is fed into pump line 60 . Feeding in on the rod side leads to an increase in pressure on the bottom side, which is useful for direct accumulator filling of the high-pressure accumulator 40 . In order to prevent overpressure on the bottom side, the connection to the rod side can be throttled in the control axis 10. This can be controlled electronically. There is thus an energy recuperation in the Rod side of the working cylinder 100 by the throttle differential circuit described.

Eine Energierekuperation kann erfindungsgemäß auch durch direkte Befüllung des Hochdruckspeichers 40 erfolgen. Dabei kann über die Ventilachse 30 ein Teilölstrom aus der Pumpenleitung 60 direkt zur Speicherbefüllung des Hochdruckspeichers 40 abgezweigt werden.According to the invention, energy can also be recuperated by directly filling the high-pressure accumulator 40 . A partial flow of oil from the pump line 60 can be branched off directly via the valve axis 30 to fill the high-pressure accumulator 40 .

Die Energierekuperation kann erfindungsgemäß auch über die Mooring Pumpe 21 erfolgen, wobei der gesamte oder ein Teil des Ölstroms aus der Pumpenleitung 60 die Mooring Pumpe 21 antreibt, welche zu diesem Zeitpunkt als Motor arbeitet. Die dabei frei werdende Energie wird über ein Getriebe an andere Pumpen und/oder an einen Dieselmotor des Arbeitsgeräts weitergegeben, wo sie entsprechend weiter zum Antrieb anderer Verbraucher, zur Befüllung von Speichern oder zur Kompensation einer Schlepplast verwertet wird. Die Ansteuerung der Standard-Auslegerachse 11 ermöglicht einen Boost beim Senken oder einen Normalbetrieb bei einem Ausfall des erfindungsgemäßen Rekuperationssystems. Im Boost wird der Ölstrom von der Bodenseite des Arbeitszylinders 100 über die Steuerachse 11 zum Tank geleitet. Der Ausleger ist im freien Fall. Im Normalbetrieb dient die Steuerachse 11 zur Steuerung der Hubzylinder. Der Ölstrom wird aus der Pumpenleitung 60 über die Steuerachse 11 zum Hubzylinder geleitet und der rückführende Ölstrom aus dem Hubzylinder wird über die Steuerachse 11 zum Tank geleitet.According to the invention, the energy recuperation can also take place via the mooring pump 21, with all or part of the oil flow from the pump line 60 driving the mooring pump 21, which is working as a motor at this point in time. The energy that is released in the process is passed on to other pumps and/or to a diesel engine of the implement via a transmission, where it is used accordingly to drive other consumers, to fill accumulators or to compensate for a towing load. The control of the standard cantilever axis 11 enables a boost when lowering or normal operation in the event of a failure of the recuperation system according to the invention. In the boost, the oil flow is routed from the bottom side of the working cylinder 100 via the control axis 11 to the tank. The boom is in free fall. In normal operation, the control axis 11 is used to control the lifting cylinder. The oil flow is directed from the pump line 60 via the control shaft 11 to the lifting cylinder and the returning oil flow from the lifting cylinder is directed via the control shaft 11 to the tank.

Die Ansteuerung der Standard-Auslegerachse 11 ermöglicht einen Boost beim Senken oder einen Normalbetrieb bei einem Ausfall des erfindungsgemäßen Rekuperationssystems. Die Mooring Pumpe 21 arbeitet im normalen Pumpenbetrieb, wenn der Ausleger nicht gesenkt wird. Ein Algorithmus kann je nach Druck am Hubzylinder bzw. am Arbeitszylinder und nach gewünschter Senkgeschwindigkeit des Auslegers den Weg der Rekuperation bestimmen bzw. bestimmen, in welche Bereiche die Hydraulikflüssigkeit zur Durchführung einer Rekuperation geleitet wird. Es können dabei mehrere oder auch alle drei Wege bzw. Bereiche gleichzeitig gewählt werden.The control of the standard cantilever axis 11 enables a boost when lowering or normal operation in the event of a failure of the recuperation system according to the invention. The mooring pump 21 operates in normal pumping mode when the boom is not being lowered. Depending on the pressure on the lifting cylinder or on the working cylinder and the desired lowering speed of the boom, an algorithm can determine the path of recuperation or determine into which areas the hydraulic fluid is directed to carry out recuperation. Several or all three paths or areas can be selected at the same time.

Ein Vorteil der erfindungsgemäßen Vorrichtung mit ihren drei unterschiedlichen Rekuperationsbereichen ist, dass nur ein einziger Hochdruckspeicher 40 genutzt werden muss bzw. kann und keine verlustreiche Energieübertragung zwischen unterschiedlichen Speichern erfolgen muss. Die Hochdruckspeicherung kann auch zu jedem Zeitpunkt erfolgen und bedingt durch die separate Drehwerkspumpe 22, 25 auch parallel zu anderen Arbeits- oder Drehwerksbewegungen durchgeführt werden. Die Arbeitspumpe bzw. Mooring Pumpe 21 kann dabei alle Verbraucher und insbesondere den Ausleger, den Stiel oder auch den Fahrantrieb des Arbeitsgeräts versorgen. Die Drehwerkspumpe 22, 25 kann dabei als Mooring Pumpe 21 ausgebildet sein.An advantage of the device according to the invention with its three different recuperation areas is that only a single high-pressure accumulator 40 has to or can be used and no lossy energy transfer between different accumulators has to take place. The high-pressure storage can also take place at any time and, due to the separate slewing gear pump 22, 25, can also be carried out in parallel with other work or slewing gear movements. The working pump or mooring pump 21 can supply all consumers and in particular the boom, the arm or the drive of the working device. The slewing gear pump 22, 25 can be designed as a mooring pump 21.

Die erfindungsgemäße Vorrichtung ist dabei besonders effizient, da der Ölfluss bei der Drei-Wege-Rekuperation in drei Wege geteilt werden kann. Der Ölfluss kann dabei zur Mooring Pumpe 21, zum Hochdruckspeicher 40 und zur Stangenseite des Arbeitszylinders 100 fließen. Der komplette Ölstrom muss nicht durch die Pumpe fließen, sodass die zur Rekuperation erforderlichen Komponenten, insbesondere die Pumpe bzw. Mooring Pumpe 21, kleiner bzw. kompakter und preisgünstiger dimensioniert werden können und dadurch geringere Druckverluste in der Vorrichtung entstehen. Durch die in drei unabhängigen hydraulischen Kreisläufen ausgebildeten Bereiche zur Rekuperation ist eine Druckanpassung bei der Rekuperation entbehrlich, wodurch keine Druckverluste in Kauf genommen werden müssen.The device according to the invention is particularly efficient because the oil flow can be divided into three paths in three-way recuperation. The oil flow can flow to the mooring pump 21, to the high-pressure accumulator 40 and to the rod side of the working cylinder 100. The entire oil flow does not have to flow through the pump, so that the components required for recuperation, in particular the pump or mooring pump 21, can be dimensioned to be smaller or more compact and cheaper, and as a result there are lower pressure losses in the device. Due to the areas for recuperation, which are designed in three independent hydraulic circuits, there is no need to adjust the pressure during recuperation, which means that no pressure losses have to be accepted.

Insgesamt ergeben sich die Vorteile, dass der Hochdruckspeicher 40 geladen werden kann, auch wenn andere Bewegungen des Arbeitsgeräts parallel gesteuert sind. Diese Bewegungen werden dabei durch das Laden des Hochdruckspeichers 40 nicht beeinflusst. Ferner kann der Ausleger über einen Standard-Kolben beschleunigt werden. Auch kann das Arbeitsgerät, welches insbesondere als Bagger ausgebildet sein kann, bei Funktionsstörungen des Rekuperationssystems weiter betrieben werden, da das dargestellte Rekuperationssystem eine Add-On-Lösung darstellt.Overall, there are the advantages that the high-pressure accumulator 40 can be charged even if other movements of the implement are controlled in parallel. These movements are not influenced by the charging of the high-pressure accumulator 40. Furthermore, the boom can be accelerated using a standard piston. The working device, which can be designed in particular as an excavator, can also continue to be operated in the event of malfunctions in the recuperation system, since the recuperation system shown represents an add-on solution.

Claims (8)

  1. Device for recovering hydraulic energy in an implement with a mooring pump (21) for operation as pump or as motor, comprising a high-pressure accumulator (40) as well as a working cylinder (100) and a throttle differential circuit for connecting the bottom side of the working cylinder with the rod side of the working cylinder of the implement, wherein the device is configured such that if pressure is applied to the working cylinder by lowering of a boom of the implement, hydraulic fluid flows out of the working cylinder into three regions, wherein in the first region the mooring pump (21) operates in the motor mode and drives multiple pumps via a transmission, wherein in the second region the high-pressure accumulator (40) stores pressure energy, and wherein in the third region the hydraulic fluid flowing out of the bottom side or the rod side of the working cylinder at least partly fills the respective other side of the working cylinder, wherein
    a hydraulic slewing gear pump (22, 25) is provided for driving a slewing gear of the implement, wherein stored energy of the high-pressure accumulator (40) can be transmitted to the other pumps and/or to a diesel engine via the slewing gear pump (22, 25).
  2. Device according to claim 1, characterized in that the working cylinder is a boom cylinder for a boom of the implement.
  3. Device according to claim 1 or 2, characterized in that the throttle differential circuit comprises a throttle between the bottom side and the rod side of the working cylinder.
  4. Device according to claim 1, 2 or 3, characterized in that the hydraulic fluid in the third region flows from the bottom side into the rod side of the working cylinder.
  5. Device according to any of the preceding claims, characterized in that the mooring pump (21) operates in an open circuit.
  6. Device according to any of the preceding claims, characterized in that the hydraulic fluid flows into one, two or three of the regions at the same time or in parallel.
  7. Device according to any of the preceding claims, characterized in that in case of failure of the device an emergency function is provided for operating the implement.
  8. Implement, in particular a hydraulic excavator, comprising a device according to any of claims 1 to 7.
EP16188813.6A 2015-10-23 2016-09-14 Device for recovery of hydraulic energy in a work device and corresponding work device Active EP3159549B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021210054A1 (en) 2021-09-13 2023-03-16 Robert Bosch Gesellschaft mit beschränkter Haftung Energy efficient electric-hydraulic control arrangement

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6676824B2 (en) * 2017-09-29 2020-04-08 株式会社日立建機ティエラ Hydraulic drive for work machines
DE102018101924A1 (en) * 2018-01-29 2019-08-01 Liebherr-Hydraulikbagger Gmbh Work machine with hydraulics for energy recuperation
CN108533578A (en) * 2018-06-14 2018-09-14 长安大学 A kind of hydraulic movable arm potential energy recovery system and method
US11408445B2 (en) * 2018-07-12 2022-08-09 Danfoss Power Solutions Ii Technology A/S Dual power electro-hydraulic motion control system
DE102022206509A1 (en) 2022-06-28 2023-12-28 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulic drive and method for regenerative lowering of an element of a work machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060185355A1 (en) * 2005-02-18 2006-08-24 Raszga Calin L Hydraulic gravitational load energy recuperation
WO2014115645A1 (en) * 2013-01-28 2014-07-31 キャタピラー エス エー アール エル Engine-assist device and industrial machine
EP3205780A1 (en) * 2014-10-06 2017-08-16 Sumitomo Heavy Industries, Ltd. Shovel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004011168A (en) * 2002-06-04 2004-01-15 Komatsu Ltd Construction machinery
US6789387B2 (en) * 2002-10-01 2004-09-14 Caterpillar Inc System for recovering energy in hydraulic circuit
US7634911B2 (en) * 2007-06-29 2009-12-22 Caterpillar Inc. Energy recovery system
CN101413523A (en) * 2008-11-14 2009-04-22 浙江大学 Independent energy accumulator energy recovery hydraulic system of engineering machinery load port
US9809957B2 (en) * 2011-05-23 2017-11-07 Parker Hannifin Ab Energy recovery method and system
US9080310B2 (en) * 2011-10-21 2015-07-14 Caterpillar Inc. Closed-loop hydraulic system having regeneration configuration
US20130152565A1 (en) * 2011-12-16 2013-06-20 Pengfei Ma Hydraulic system having energy recovery
US9279236B2 (en) * 2012-06-04 2016-03-08 Caterpillar Inc. Electro-hydraulic system for recovering and reusing potential energy
US20140033697A1 (en) * 2012-07-31 2014-02-06 Patrick Opdenbosch Meterless hydraulic system having force modulation
CN103148031B (en) * 2013-03-27 2015-07-08 南京工业大学 Energy-saving control system of hydraulic movable arm loop
CN203463385U (en) * 2013-09-16 2014-03-05 愚公机械股份有限公司 Energy-saving hoisting system of hydraulic crane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060185355A1 (en) * 2005-02-18 2006-08-24 Raszga Calin L Hydraulic gravitational load energy recuperation
WO2014115645A1 (en) * 2013-01-28 2014-07-31 キャタピラー エス エー アール エル Engine-assist device and industrial machine
EP3205780A1 (en) * 2014-10-06 2017-08-16 Sumitomo Heavy Industries, Ltd. Shovel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021210054A1 (en) 2021-09-13 2023-03-16 Robert Bosch Gesellschaft mit beschränkter Haftung Energy efficient electric-hydraulic control arrangement

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RU2016141355A (en) 2018-04-26
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CN106837947B (en) 2020-11-03
BR102016024338A2 (en) 2017-07-18
CN106837947A (en) 2017-06-13
AU2016247211A1 (en) 2017-05-11
DE102016003390A1 (en) 2017-04-27
CA2945219A1 (en) 2017-04-23
ES2911295T3 (en) 2022-05-18

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