EP2600011A3 - Hydraulic directional valve for the lifting gear of an agricultural vehicle - Google Patents

Hydraulic directional valve for the lifting gear of an agricultural vehicle Download PDF

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Publication number
EP2600011A3
EP2600011A3 EP12191963.3A EP12191963A EP2600011A3 EP 2600011 A3 EP2600011 A3 EP 2600011A3 EP 12191963 A EP12191963 A EP 12191963A EP 2600011 A3 EP2600011 A3 EP 2600011A3
Authority
EP
European Patent Office
Prior art keywords
connection
working
port
pump
tank
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.)
Withdrawn
Application number
EP12191963.3A
Other languages
German (de)
French (fr)
Other versions
EP2600011A2 (en
Inventor
Reiner Kunz
Simon Ehmann
Joerg Mueller
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2600011A2 publication Critical patent/EP2600011A2/en
Publication of EP2600011A3 publication Critical patent/EP2600011A3/en
Withdrawn legal-status Critical Current

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
    • 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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • 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
    • 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
    • F15B2211/3127—Floating position connecting the working ports and 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump

Abstract

Die Erfindung betrifft ein Hydraulisches Wegeventil (10) mit einem Pumpenanschluss (P), einem Tankanschluss (T) und einem ersten und einem zweiten Arbeitsanschluss (A; B), wobei der erste und der zweite Arbeitsanschluss (A; B) mit einem Hydraulikzylinder (30) eines Hubwerks einer mobilen Arbeitsmaschine, insbesondere eines landwirtschaftlichen Fahrzeugs verbindbar sind, wobei der Pumpenanschluss (P) mit einer Hydraulikpumpe (40) verbindbar ist,
wobei in einer ersten Schaltstellung (11) der Pumpenanschluss (P), der Tankanschluss (T) und der erste und der zweite Arbeitsanschluss (A; B) gesperrt sind,
wobei in einer zweiten Schaltstellung (12) der Pumpenanschluss (P) mit dem ersten Arbeitsanschluss (A) und der Tankanschluss (T) mit dem zweiten Arbeitsanschluss (B) verbunden sind,
wobei in einer dritten Schaltstellung (13) der Pumpenanschluss (P) mit dem zweiten Arbeitsanschluss (B) und der Tankanschluss (T) mit dem ersten Arbeitsanschluss (A) verbunden sind,
wobei in einer vierten Schaltstellung (14) der erste und der zweite Arbeitsanschluss (A, B) mit dem Tankanschluss (T) verbunden sind, wobei der Pumpenanschluss (P) gesperrt ist.The invention relates to a hydraulic directional control valve (10) having a pump connection (P), a tank connection (T) and a first and a second working connection (A; B), the first and the second working connection (A; B) being equipped with a hydraulic cylinder (A). 30) of a lifting mechanism of a mobile working machine, in particular of an agricultural vehicle, the pump connection (P) being connectable to a hydraulic pump (40),
wherein in a first switching position (11) the pump connection (P), the tank connection (T) and the first and the second working connection (A; B) are blocked,
wherein in a second switching position (12) the pump connection (P) to the first working port (A) and the tank port (T) to the second working port (B) are connected,
wherein in a third switching position (13) the pump connection (P) to the second working port (B) and the tank port (T) to the first working port (A) are connected,
wherein in a fourth switching position (14) of the first and the second working port (A, B) are connected to the tank port (T), wherein the pump port (P) is locked.

Erfindungsgemäß ist eine fünfte Schaltstellung (15) vorgesehen, in der der Tankanschluss (T) mit dem zweiten Arbeitsanschluss (B) verbunden ist, wobei der Pumpenanschluss (P) und der erste Arbeitsanschluss (A) gesperrt sind.

Figure imgaf001
According to the invention, a fifth switching position (15) is provided, in which the tank connection (T) is connected to the second working connection (B), the pump connection (P) and the first working connection (A) being blocked.
Figure imgaf001
EP12191963.3A 2011-12-03 2012-11-09 Hydraulic directional valve for the lifting gear of an agricultural vehicle Withdrawn EP2600011A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110120302 DE102011120302A1 (en) 2011-12-03 2011-12-03 Hydraulic directional control valve for the hoist of an agricultural vehicle

Publications (2)

Publication Number Publication Date
EP2600011A2 EP2600011A2 (en) 2013-06-05
EP2600011A3 true EP2600011A3 (en) 2017-03-08

Family

ID=47227517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12191963.3A Withdrawn EP2600011A3 (en) 2011-12-03 2012-11-09 Hydraulic directional valve for the lifting gear of an agricultural vehicle

Country Status (4)

Country Link
US (1) US9255587B2 (en)
EP (1) EP2600011A3 (en)
CN (1) CN103133445B (en)
DE (1) DE102011120302A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013224322A1 (en) 2013-11-28 2015-05-28 Robert Bosch Gmbh Hydraulic control arrangement
CN103999589B (en) * 2014-05-07 2016-08-24 武汉盛硕电子有限公司 Farm implements for agricultural ploughing machine promote system
CN111802010B (en) * 2020-07-22 2022-08-12 河南科技大学 Hydraulic pump postposition type tractor electrohydraulic suspension system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608758A1 (en) * 1996-03-07 1997-09-11 Rexroth Mannesmann Gmbh Multifunction control valve for hydraulic lifting gear
US6971453B2 (en) * 2003-11-11 2005-12-06 Deere & Company Control system for a three point implement hitch assembly
EP2670987A1 (en) * 2011-02-03 2013-12-11 Parker Hannifin Manufacturing Finland OY Directional valve equipped with pressure control

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905332A1 (en) * 1979-02-13 1980-08-21 Kloeckner Humboldt Deutz Ag Hydraulic multiway valve for double-acting ram - has intermediate control position allowing fine fluid metering
US4565219A (en) * 1982-09-13 1986-01-21 The Oilgear Japan Company Multiple-position solenoid-operated control valve
DE3836453A1 (en) * 1987-12-21 1989-07-06 Bosch Gmbh Robert Valve arrangement for controlling and monitoring the working pressure of a hydraulic consumer
IE64569B1 (en) * 1989-11-07 1995-08-23 Ror Rockwell Ltd Height control of air suspended vehicles
KR930010906B1 (en) * 1989-12-14 1993-11-17 니뽄 에어브레이크 가부시끼가이샤 Hydraulic motor control circuit
DE4036564A1 (en) * 1990-11-16 1992-05-21 Bosch Gmbh Robert Hydraulic system for control of press RAM - provides fast approach with high forming load by use of nested cylinders controlled by multiway proportional valve
DE19957952A1 (en) * 1999-12-02 2001-06-07 Mannesmann Rexroth Ag Hydraulic directional control valve for load-independent control of a hydraulic consumer, especially of a mobile machine
DE10121924A1 (en) * 2001-05-05 2002-11-07 Bosch Rexroth Ag Hydraulic control arrangement for controlling a single-acting hydraulic consumer with regard to direction and speed and directional valve therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608758A1 (en) * 1996-03-07 1997-09-11 Rexroth Mannesmann Gmbh Multifunction control valve for hydraulic lifting gear
US6971453B2 (en) * 2003-11-11 2005-12-06 Deere & Company Control system for a three point implement hitch assembly
EP2670987A1 (en) * 2011-02-03 2013-12-11 Parker Hannifin Manufacturing Finland OY Directional valve equipped with pressure control

Also Published As

Publication number Publication date
CN103133445B (en) 2017-03-01
US20130139915A1 (en) 2013-06-06
US9255587B2 (en) 2016-02-09
DE102011120302A1 (en) 2013-06-06
CN103133445A (en) 2013-06-05
EP2600011A2 (en) 2013-06-05

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