CA2571609C - Systeme hydraulique sensible a la charge - Google Patents

Systeme hydraulique sensible a la charge Download PDF

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Publication number
CA2571609C
CA2571609C CA2571609A CA2571609A CA2571609C CA 2571609 C CA2571609 C CA 2571609C CA 2571609 A CA2571609 A CA 2571609A CA 2571609 A CA2571609 A CA 2571609A CA 2571609 C CA2571609 C CA 2571609C
Authority
CA
Canada
Prior art keywords
valve
load sensing
plow
flow
hydraulic
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.)
Active
Application number
CA2571609A
Other languages
English (en)
Other versions
CA2571609A1 (fr
Inventor
Richard Hacker
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.)
Mecanique RH
Original Assignee
Mecanique RH
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
Priority claimed from CA002530727A external-priority patent/CA2530727A1/fr
Application filed by Mecanique RH filed Critical Mecanique RH
Priority to CA2571609A priority Critical patent/CA2571609C/fr
Publication of CA2571609A1 publication Critical patent/CA2571609A1/fr
Application granted granted Critical
Publication of CA2571609C publication Critical patent/CA2571609C/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B11/16—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
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • 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
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
    • 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
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente divulgation décrit un système hydraulique polyvalent de détection des charges, adapté à diverses configurations possibles pour accessoires installés sur des véhicules, comme des véhicules des types à charrue ou à épandeurs, ou machines semblables. Une version du système hydraulique comprend les éléments qui suivent. Un réservoir pour fluide hydraulique; une pompe à déplacement variable sensible aux charges pour pomper le fluide hydraulique du réservoir; et un dispositif à soupapes marche-arrêt de charrue pourvu d'une lumière de refoulement accouplée à la pompe pour recevoir le fluide hydraulique sous pression. Le dispositif à soupapes de charrue comprend un collecteur dont le canal de fluide est accouplé à la lumière de refoulement du dispositif à soupapes de charrue et ce dispositif comprend de plus un certain nombre d'orifices de retour. Un ou plusieurs dispositifs à soupapes marche-arrêt de charrue sont accouplés à la lumière de refoulement du collecteur, chaque dispositif à soupapes étant adapté à commander l'écoulement du fluide pour faire fonctionner l'élément respectif de l'équipement de la charrue. Un dispositif à soupapes à profondeur de passe est accouplé à la lumière de refoulement du collecteur, ledit dispositif étant adapté pour fonctionner concurremment avec un ou plusieurs dispositifs à soupapes marche-arrêt pour appliquer un signal de pression à détection des charges à la pompe.
CA2571609A 2005-12-16 2006-12-15 Systeme hydraulique sensible a la charge Active CA2571609C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2571609A CA2571609C (fr) 2005-12-16 2006-12-15 Systeme hydraulique sensible a la charge

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,530,727 2005-12-16
CA002530727A CA2530727A1 (fr) 2005-12-16 2005-12-16 Systeme hydraulique de detection de charge pour vehicules chasse- neige/epandeurs
CA2571609A CA2571609C (fr) 2005-12-16 2006-12-15 Systeme hydraulique sensible a la charge

Publications (2)

Publication Number Publication Date
CA2571609A1 CA2571609A1 (fr) 2007-06-16
CA2571609C true CA2571609C (fr) 2011-12-06

Family

ID=38421254

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2571609A Active CA2571609C (fr) 2005-12-16 2006-12-15 Systeme hydraulique sensible a la charge

Country Status (1)

Country Link
CA (1) CA2571609C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103032415B (zh) * 2012-12-24 2015-05-20 长沙中联消防机械有限公司 液压装置和工程机械

Also Published As

Publication number Publication date
CA2571609A1 (fr) 2007-06-16

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