DK0603722T3 - Hydraulic control device - Google Patents

Hydraulic control device

Info

Publication number
DK0603722T3
DK0603722T3 DK93120202.2T DK93120202T DK0603722T3 DK 0603722 T3 DK0603722 T3 DK 0603722T3 DK 93120202 T DK93120202 T DK 93120202T DK 0603722 T3 DK0603722 T3 DK 0603722T3
Authority
DK
Denmark
Prior art keywords
spool
hydraulic
control
feed
volume
Prior art date
Application number
DK93120202.2T
Other languages
Danish (da)
Inventor
Rudolf Brunner Obering
Martin Dipl-Ing Heusser
Harald Dipl-Ing Klemens
Original Assignee
Heilmeier & Weinlein
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 Heilmeier & Weinlein filed Critical Heilmeier & Weinlein
Application granted granted Critical
Publication of DK0603722T3 publication Critical patent/DK0603722T3/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding 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
    • 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
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
  • Jib Cranes (AREA)

Abstract

In a hydraulic control system (V) for at least one hydraulic consumer (5, 6) of a mobile crane (K), which control system (V) has a directional control spool, connected on the one side to a pressure line (15) and a return line (16) and on the other side to two working lines (17, 18) to the hydraulic motor and having an adjustable spool piston (21), as well as a volume-reducing device (M) which can be brought into engagement as a function of a critical loading state and with which at least the volume of the hydraulic medium flowing to the hydraulic motor can be reduced, the directional control spool is designed as a proportional directional control spool (S1 to S8) with a feed-control pressure balance (Z) connected upstream in the pressure line (15a), and the volume-reducing device (M) is arranged constructionally separate from the spool piston (21) so that it engages between the feed-control pressure balance (Z) and the proportional directional control spool (S1 to S8) or on the feed-control pressure balance (Z) or on the spool piston (21). <IMAGE>
DK93120202.2T 1992-12-23 1993-12-15 Hydraulic control device DK0603722T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4243973A DE4243973C1 (en) 1992-12-23 1992-12-23 Hydraulic control device

Publications (1)

Publication Number Publication Date
DK0603722T3 true DK0603722T3 (en) 1997-09-08

Family

ID=6476465

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93120202.2T DK0603722T3 (en) 1992-12-23 1993-12-15 Hydraulic control device

Country Status (4)

Country Link
EP (1) EP0603722B1 (en)
AT (1) ATE152213T1 (en)
DE (2) DE4243973C1 (en)
DK (1) DK0603722T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29515829U1 (en) * 1995-10-05 1995-11-30 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Hydraulic control device and two-way control valve
DE29611525U1 (en) 1996-07-02 1996-09-05 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Hydraulic control device
DE29611526U1 (en) * 1996-07-02 1996-09-05 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Hydraulic control device
KR100527378B1 (en) * 2003-06-25 2005-11-09 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydraulic circuit of option device of heavy equipment of having spool boom joint
KR100559291B1 (en) * 2003-06-25 2006-03-15 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydraulic circuit of option device of heavy equipment
DE102006060334B4 (en) * 2006-12-20 2011-08-25 Sauer-Danfoss Aps Hydraulic valve arrangement
DE502008002003D1 (en) * 2008-08-20 2011-01-20 Hawe Hydraulik Se Hydraulic control for a hydraulic motor
CN109306976B (en) * 2018-11-05 2023-05-23 无锡市钻通工程机械有限公司 Load sensitive control system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE346762C (en) * 1970-11-04 1979-05-14 Hiab Foco Ab LOCK AND SAFETY DEVICE FOR HYDRAULICALLY OPERATED TRAVEL CRANES
DE2513399A1 (en) * 1975-03-26 1976-10-07 Toussaint & Hess Gmbh Slewing and derricking crane - has release actuating microswitch controlling solenoid valve in hydraulic system for overload protection
DE3503374A1 (en) * 1985-02-01 1986-08-07 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic overload safety arrangement for a lifting appliance
DE3644737C2 (en) * 1985-09-13 1995-11-23 Rexroth Mannesmann Gmbh Control arrangement for at least two hydraulic consumers fed by at least one pump
ES2004356A6 (en) * 1986-12-26 1989-01-01 Hiac Valman S A Distributor for hydraulic cylinders.
DE3703576A1 (en) * 1987-02-06 1988-08-18 Rexroth Mannesmann Gmbh Control arrangement for at least two hydraulic consumers fed by at least one pump
DE3710699C1 (en) * 1987-03-31 1988-08-18 Heilmeier & Weinlein Hydraulic control device for a consumer group
DE8800747U1 (en) * 1988-01-22 1988-03-10 Danfoss A/S, Nordborg Control device for a hydraulic motor
SE8803181D0 (en) * 1988-09-09 1988-09-09 Atlas Copco Ab HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS
DE4021347A1 (en) * 1990-07-05 1992-01-16 Heilmeier & Weinlein HYDRAULIC CONTROL DEVICE
DE9111569U1 (en) * 1991-09-17 1991-11-14 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Control device for at least one hydraulic motor

Also Published As

Publication number Publication date
DE4243973C1 (en) 1994-07-07
EP0603722A1 (en) 1994-06-29
EP0603722B1 (en) 1997-04-23
DE59306264D1 (en) 1997-05-28
ATE152213T1 (en) 1997-05-15

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