SE0100695L - Hydraulic lifting device for battery operated industrial trucks - Google Patents

Hydraulic lifting device for battery operated industrial trucks

Info

Publication number
SE0100695L
SE0100695L SE0100695A SE0100695A SE0100695L SE 0100695 L SE0100695 L SE 0100695L SE 0100695 A SE0100695 A SE 0100695A SE 0100695 A SE0100695 A SE 0100695A SE 0100695 L SE0100695 L SE 0100695L
Authority
SE
Sweden
Prior art keywords
hydraulic
lowering
electric machine
pump
valve arrangement
Prior art date
Application number
SE0100695A
Other languages
Swedish (sv)
Other versions
SE520519C2 (en
SE0100695D0 (en
Inventor
Nis-Georg Nissen
Original Assignee
Jungheinrich Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jungheinrich Ag filed Critical Jungheinrich Ag
Publication of SE0100695D0 publication Critical patent/SE0100695D0/en
Publication of SE0100695L publication Critical patent/SE0100695L/en
Publication of SE520519C2 publication Critical patent/SE520519C2/en

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or 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
    • 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
    • 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
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric 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
    • F15B2211/2053—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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the 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
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6654—Flow rate control
    • 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
    • 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
    • F15B2211/75—Control of speed of the output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The device has at least one hydraulic lifting cylinder (20) and a hydraulic pump (12) that supplies the cylinder in a lifting process and acts as a motor in a lowering process. An electric machine (10) acts as an electric motor in the lifting process and as a generator in the lowering process. A control device controls the rpm of the electric machine by controlling a valve arrangement. The rpm of the electric machine is controlled by a device that is supplied by the hydraulic pump to control a lowering branch (26) between the valve arrangement and a connection between a check valve and the pump input and at least one additional hydraulic consumer over the valve arrangement. The electric machine is controlled according to the valve arrangement operation. A hydraulic volume flow limiter is arranged in the lowering branch, to lower the overall hydraulic pressure at determined operation points and hold the load. A volume flow distributor is arranged in the lowering branch, which distributes the volume flow from the lifting cylinder to a tank (14) and the pump input. The flow to the pump is determined by the rpm control device of the electric machine. A controllable bypass valve (38) between the pump output and the tank to produce the lowering operation and supply an additional consumer (32). The additional consumer is cut off during the lifting process.
SE0100695A 2000-03-04 2001-03-01 Hydraulic lifting device for battery operated industrial trucks SE520519C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000110670 DE10010670C2 (en) 2000-03-04 2000-03-04 Hydraulic lifting device for battery-operated industrial trucks

Publications (3)

Publication Number Publication Date
SE0100695D0 SE0100695D0 (en) 2001-03-01
SE0100695L true SE0100695L (en) 2001-09-05
SE520519C2 SE520519C2 (en) 2003-07-22

Family

ID=7633550

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0100695A SE520519C2 (en) 2000-03-04 2001-03-01 Hydraulic lifting device for battery operated industrial trucks

Country Status (4)

Country Link
DE (1) DE10010670C2 (en)
FR (1) FR2807020B1 (en)
GB (1) GB2360757B (en)
SE (1) SE520519C2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202607C1 (en) * 2002-01-24 2003-07-31 Hydac Fluidtechnik Gmbh Control device, in particular for use in hydraulically operating lifting devices
JP2003252592A (en) 2002-03-01 2003-09-10 Nippon Yusoki Co Ltd Control device and method for forklift
DE20208577U1 (en) 2002-06-03 2003-12-11 Hawe Hydraulik Gmbh & Co. Kg Electro-hydraulic lift control device for industrial trucks
DE102004011913B4 (en) 2004-03-11 2005-12-29 Jungheinrich Ag Hydraulic lifting device for battery-operated industrial trucks
DE102004028620B4 (en) * 2004-06-12 2008-02-21 Jungheinrich Ag Drive system for a mobile machine with driven wheels, in particular an industrial truck
US7344000B2 (en) 2004-09-23 2008-03-18 Crown Equipment Corporation Electronically controlled valve for a materials handling vehicle
EP2058270B1 (en) 2007-11-06 2010-05-26 HAWE Hydraulik SE Electrohydraulic lifting device
KR20110127773A (en) 2010-05-20 2011-11-28 두산산업차량 주식회사 Energy reclaiming system for an electric forklift truck
EP2675745B1 (en) 2011-02-16 2016-05-11 Crown Equipment Corporation Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed
JP5352663B2 (en) * 2011-12-26 2013-11-27 株式会社豊田自動織機 Hydraulic control device for forklift
JP5333616B2 (en) * 2012-02-02 2013-11-06 株式会社豊田自動織機 Hydraulic control device for forklift
DE102012024647A1 (en) * 2012-12-17 2014-06-18 Jungheinrich Aktiengesellschaft Hydraulic lifting device for a battery-operated industrial truck
JP5835249B2 (en) * 2013-02-27 2015-12-24 株式会社豊田自動織機 Hydraulic control device for forklift
CN104141644B (en) * 2013-05-10 2017-12-15 博世力士乐（常州）有限公司 The power unit of hydraulic oil pumping unit and corresponding hydraulic oil pumping unit
JP6269170B2 (en) 2013-06-17 2018-01-31 株式会社豊田自動織機 Hydraulic drive device for cargo handling vehicle
JP6613233B2 (en) 2013-06-26 2019-11-27 パーカー ハニフィン マニュファクチャリング リミテッド Energy efficient electric vehicle control system
WO2016043998A1 (en) 2014-09-15 2016-03-24 Crown Equipment Corporation Lift truck with optical load sensing structure
JP6394905B2 (en) * 2015-04-10 2018-09-26 株式会社豊田自動織機 Hydraulic control device for forklift
EP3133043A1 (en) * 2015-08-18 2017-02-22 HAWE Hydraulik SE Lifting module
CA3039305A1 (en) * 2018-04-06 2019-10-06 The Raymond Corporation Auxiliary hydraulic circuit filtering systems and methods

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947744A (en) * 1974-10-21 1976-03-30 Allis-Chalmers Corporation Electric truck having elevated load potential energy recovery with means to adjust rate of carriage descent
DE3602510A1 (en) * 1986-01-28 1987-07-30 Steinbock Gmbh HYDRAULIC LIFTING
JP2570851B2 (en) * 1989-03-03 1997-01-16 株式会社豊田自動織機製作所 Hydraulic devices in battery-powered industrial vehicles
JPH033897A (en) * 1989-05-31 1991-01-09 Toyota Autom Loom Works Ltd Hydraulic device for battery type industrial vehicle
JPH0439299A (en) * 1990-06-01 1992-02-10 Toyota Autom Loom Works Ltd Hydraulic device in battery type industrial vehicle
JPH04179698A (en) * 1990-07-13 1992-06-26 Toyota Autom Loom Works Ltd Hydraulic device in battery type industrial vehicle
DE4317782C2 (en) * 1993-05-28 1996-01-18 Jungheinrich Ag Hydraulic lifting device for battery-powered industrial trucks or the like
DE4402653C2 (en) * 1994-01-29 1997-01-30 Jungheinrich Ag Hydraulic lifting device for battery-powered industrial trucks
DE29911686U1 (en) * 1999-07-06 1999-09-16 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Electro-hydraulic lifting module

Also Published As

Publication number Publication date
GB0104699D0 (en) 2001-04-11
DE10010670A1 (en) 2001-09-13
DE10010670C2 (en) 2003-11-06
SE520519C2 (en) 2003-07-22
FR2807020B1 (en) 2005-02-25
SE0100695D0 (en) 2001-03-01
FR2807020A1 (en) 2001-10-05
GB2360757A (en) 2001-10-03
GB2360757B (en) 2004-03-10

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Legal Events

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