EP2256082A3 - Hydrostatic drive system for a mobile work machine - Google Patents

Hydrostatic drive system for a mobile work machine Download PDF

Info

Publication number
EP2256082A3
EP2256082A3 EP10004441A EP10004441A EP2256082A3 EP 2256082 A3 EP2256082 A3 EP 2256082A3 EP 10004441 A EP10004441 A EP 10004441A EP 10004441 A EP10004441 A EP 10004441A EP 2256082 A3 EP2256082 A3 EP 2256082A3
Authority
EP
European Patent Office
Prior art keywords
drive system
work machine
brake
mobile work
hydrostatic drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10004441A
Other languages
German (de)
French (fr)
Other versions
EP2256082B1 (en
EP2256082A2 (en
EP2256082B9 (en
Inventor
Markus Schwab
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.)
STILL GmbH
Original Assignee
STILL GmbH
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 STILL GmbH filed Critical STILL GmbH
Publication of EP2256082A2 publication Critical patent/EP2256082A2/en
Publication of EP2256082A3 publication Critical patent/EP2256082A3/en
Publication of EP2256082B1 publication Critical patent/EP2256082B1/en
Application granted granted Critical
Publication of EP2256082B9 publication Critical patent/EP2256082B9/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/003—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with multiple outputs

Abstract

Die Erfindung betrifft ein hydrostatisches Antriebssystem einer mobilen Arbeitsmaschine, insbesondere eines Flurförderzeugs, mit einer Pumpe (1), die zur Versorgung mindestens eines Verbrauchers einer Arbeitshydraulik (2) und einer hydraulischen Lenkung (3) vorgesehen ist, sowie mit einer hydraulischen mittels eines Bremsdruckes steuerbaren Bremseinrichtung (20), wobei in einer Förderleitung (4) der Pumpe (1) ein Prioritätsventil (5) zur bevorzugten Versorgung der Lenkung (3) angeordnet ist. Zur Erzeugung des Bremsdruckes ist eine mit der Förderleitung (4) der Pumpe (1) stromauf des Prioritätsventils (5) der Lenkung (3) in Verbindung stehende Steuerdruckleitung (25) vorgesehen. Die Steuerdruckleitung (25) ist zu einem Bremsventil (21) der Bremseinrichtung (20) geführt, wobei in der Steuerdruckleitung (25) ein Druckminderventil (26) angeordnet ist.

Figure imgaf001
The invention relates to a hydrostatic drive system of a mobile work machine, in particular of a truck, with a pump (1) which is provided to supply at least one consumer of a working hydraulics (2) and a hydraulic steering (3), as well as with a hydraulic controllable by means of a brake pressure Braking device (20), wherein in a delivery line (4) of the pump (1) a priority valve (5) for the preferred supply of the steering (3) is arranged. To generate the brake pressure, a control pressure line (25) communicating with the delivery line (4) of the pump (1) upstream of the priority valve (5) of the steering (3) is provided. The control pressure line (25) is guided to a brake valve (21) of the brake device (20), wherein in the control pressure line (25) a pressure reducing valve (26) is arranged.
Figure imgaf001
EP10004441.1A 2009-05-25 2010-04-27 Hydrostatic drive system for a mobile work machine Not-in-force EP2256082B9 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910022468 DE102009022468A1 (en) 2009-05-25 2009-05-25 Hydrostatic drive system of a mobile work machine

Publications (4)

Publication Number Publication Date
EP2256082A2 EP2256082A2 (en) 2010-12-01
EP2256082A3 true EP2256082A3 (en) 2011-01-19
EP2256082B1 EP2256082B1 (en) 2015-07-29
EP2256082B9 EP2256082B9 (en) 2015-10-14

Family

ID=42671861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004441.1A Not-in-force EP2256082B9 (en) 2009-05-25 2010-04-27 Hydrostatic drive system for a mobile work machine

Country Status (2)

Country Link
EP (1) EP2256082B9 (en)
DE (1) DE102009022468A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107842533B (en) * 2016-09-19 2020-03-31 比亚迪股份有限公司 Priority valve device and vehicle with same
CN107842531B (en) * 2016-09-21 2019-11-22 比亚迪股份有限公司 The hydraulic integrated control system and vehicle of vehicle
CN111765135B (en) * 2020-07-10 2022-05-06 中国铁建重工集团股份有限公司 Hydraulic control system for arch frame operation trolley

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746090A1 (en) * 1997-09-24 1999-03-25 Linde Ag Hydrostatic drive system for vehicle e.g. forklift
DE10151831A1 (en) * 2001-10-20 2003-05-08 Still Gmbh Hydraulic system for an industrial truck has an additional connection valve linking the load pressure line to the transport line so that a storage brake can be activated without simultaneous movement of a hydraulic load
DE202004010530U1 (en) * 2004-07-06 2004-12-09 Deere & Company, Moline Hydraulic circuit with priority valve for vehicle has at least one further priority valve with which priority of only one load is regulated and that also has pressure adaptation function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315496A1 (en) 2003-04-04 2004-10-21 Linde Ag Hydraulic system for a battery-operated industrial truck has two hydraulic pumps, the second pump being used for additional supply to a lifting mechanism
DE10315494A1 (en) 2003-04-04 2004-10-21 Linde Ag Hydraulic system for electrically driven floor conveyor, has pump that is driven by electric motor to cool structural component of floor conveyor and actuate hydraulic steering mechanism and drive axle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746090A1 (en) * 1997-09-24 1999-03-25 Linde Ag Hydrostatic drive system for vehicle e.g. forklift
DE10151831A1 (en) * 2001-10-20 2003-05-08 Still Gmbh Hydraulic system for an industrial truck has an additional connection valve linking the load pressure line to the transport line so that a storage brake can be activated without simultaneous movement of a hydraulic load
DE202004010530U1 (en) * 2004-07-06 2004-12-09 Deere & Company, Moline Hydraulic circuit with priority valve for vehicle has at least one further priority valve with which priority of only one load is regulated and that also has pressure adaptation function

Also Published As

Publication number Publication date
DE102009022468A1 (en) 2010-12-02
EP2256082B1 (en) 2015-07-29
EP2256082A2 (en) 2010-12-01
EP2256082B9 (en) 2015-10-14

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