SE8200996L - LOADING OR OVERCENT VALVE - Google Patents

LOADING OR OVERCENT VALVE

Info

Publication number
SE8200996L
SE8200996L SE8200996A SE8200996A SE8200996L SE 8200996 L SE8200996 L SE 8200996L SE 8200996 A SE8200996 A SE 8200996A SE 8200996 A SE8200996 A SE 8200996A SE 8200996 L SE8200996 L SE 8200996L
Authority
SE
Sweden
Prior art keywords
valve
chamber
control
partition wall
spring
Prior art date
Application number
SE8200996A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE442765B (en
Inventor
L B Sonsterod
Original Assignee
Atlas Copco Ab
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 Atlas Copco Ab filed Critical Atlas Copco Ab
Priority to SE8200996A priority Critical patent/SE442765B/en
Priority to DE19833305282 priority patent/DE3305282A1/en
Publication of SE8200996L publication Critical patent/SE8200996L/en
Publication of SE442765B publication Critical patent/SE442765B/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • 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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow 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
    • F15B2211/50—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)
  • Safety Valves (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

The load-holding or overcentre valve for hydraulic systems comprises a valve housing (30) which contains a valve chamber (75) and a control chamber (54). The valve chamber (75) has a first (76) and a second connection opening (35), between which a spring-loaded non-return valve (37, 38) and a spring-loaded pressure relief valve (41, 42, 43) are arranged. The control chamber (54) is separated from the valve chamber (75) by a partition wall (47) and supplied with control pressure via a third connection opening (50). This pressure acts via a control piston guided displaceably in the control chamber (54) and via a tappet pin (58) guided freely displaceably in a bore (57) in the partition wall (47) on the pressure relief valve (41, 42, 43). On the valve chamber (75) side, the tappet pin (58) has a head (59) which can be pressed into sealing contact with the partition wall (47). <IMAGE>
SE8200996A 1982-02-18 1982-02-18 LAST pouring VALVE SE442765B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8200996A SE442765B (en) 1982-02-18 1982-02-18 LAST pouring VALVE
DE19833305282 DE3305282A1 (en) 1982-02-18 1983-02-16 Load-holding valve or overcentre valve for hydraulic systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8200996A SE442765B (en) 1982-02-18 1982-02-18 LAST pouring VALVE

Publications (2)

Publication Number Publication Date
SE8200996L true SE8200996L (en) 1983-08-19
SE442765B SE442765B (en) 1986-01-27

Family

ID=20346039

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8200996A SE442765B (en) 1982-02-18 1982-02-18 LAST pouring VALVE

Country Status (2)

Country Link
DE (1) DE3305282A1 (en)
SE (1) SE442765B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4109680A1 (en) * 1991-03-23 1992-09-24 Fluidtech Gmbh VALVE WITH PRESETABLE CONSTANT CLOSING FORCE
DE4221213A1 (en) * 1992-06-27 1994-01-05 Rexroth Mannesmann Gmbh Pressure limiting valve for hydraulic equipment - has pair of stops to limit movement range of a control piston plunger.
DE19627306A1 (en) * 1996-07-06 1998-01-08 Bosch Gmbh Robert Stop valve with pressure limitation
DE19750253C2 (en) * 1997-11-13 2002-01-17 Wessel Hydraulik Load-holding valve arrangement
DE10336684A1 (en) * 2003-08-09 2005-03-03 Deere & Company, Moline Hydraulic control arrangement for a mobile work machine
US9273702B2 (en) 2011-10-21 2016-03-01 Sun Hydraulics Corporation Dynamically adjusting counterbalance valve
CN109058216B (en) * 2018-09-21 2020-05-22 浙江奥诗柯流体控制股份有限公司 Balance valve
CN108999824B (en) * 2018-09-21 2020-04-17 玉环信得利阀业股份有限公司 Energy-saving balance valve
DE102019218401B3 (en) * 2019-11-27 2021-04-01 Hawe Hydraulik Se Load holding valve, load holding valve set and method for assembling a load holding valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2211404A1 (en) * 1972-03-09 1973-09-13 Rexroth Gmbh G L UNLOCKABLE NON-RETURN VALVE
DE2559029C2 (en) * 1975-12-29 1985-10-31 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München Brake valve
IT1118648B (en) * 1979-05-18 1986-03-03 Chs Cinotto Giuseppe Hydraulic SAFETY DEVICE FOR HYDRAULIC CIRCUITS, ESPECIALLY OF LIFT AND SIMILAR EXCAVATORS

Also Published As

Publication number Publication date
DE3305282A1 (en) 1983-08-25
SE442765B (en) 1986-01-27

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