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1. WO2011071578 - CONTROL SYSTEM FOR SWASHPLATE PUMP

Publication Number WO/2011/071578
Publication Date 16.06.2011
International Application No. PCT/US2010/049040
International Filing Date 16.09.2010
IPC
F15B 11/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11Servomotor systems without provision for follow-up action
02Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
F04B 49/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
06Control using electricity
F15B 21/08 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
21Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
08Servomotor systems incorporating electrically- operated control means
F15B 13/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13Details of servomotor systems
02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
F15B 13/044 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13Details of servomotor systems
02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
04for use with a single servomotor
044operated by electrically-controlled means, e.g. solenoids, torque-motors
CPC
F04B 49/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
002Hydraulic systems to change the pump delivery
F04B 49/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
12by varying the length of stroke of the working members
F04B 49/22
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
22by means of valves
F04B 53/1082
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
10Valves; Arrangement of valves
108Valves characterised by the material
1082magnetic
F15B 2211/20553
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
2211Circuits for servomotor systems
20Fluid pressure source, e.g. accumulator or variable axial piston pump
205Systems with pumps
2053Type of pump
20546variable capacity
20553with pilot circuit, e.g. for controlling a swash plate
F15B 2211/20561
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
2211Circuits for servomotor systems
20Fluid pressure source, e.g. accumulator or variable axial piston pump
205Systems with pumps
2053Type of pump
20561reversible
Applicants
  • CATERPILLAR INC. [US]/[US] (AllExceptUS)
  • WAGNER, Christoph, M. [DE]/[US] (UsOnly)
  • DU, Hongliu [US]/[US] (UsOnly)
Inventors
  • WAGNER, Christoph, M.
  • DU, Hongliu
Agents
  • TROUSDALE, Jonathan, V.
Priority Data
12/636,19911.12.2009US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL SYSTEM FOR SWASHPLATE PUMP
(FR) SYSTÈME DE COMMANDE POUR POMPE À PLATEAU DE RÉGLAGE
Abstract
(EN) A pump (10) for a hydraulic system is disclosed. The pump may have a tiltable swashplate (28), at least one actuator (34) movable to tilt the swashplate, a supply of pressurized fluid (42), and a drain (52). The pump may also have a first circuit (48) connectable to the supply of pressurized fluid and to the drain and configured to control operation of the at least one actuator, and a second circuit (50) connectable to the supply of pressurized fluid and to the drain and configured to control operation of the at least one actuator. The pump may further have a valve (58) configured to connect the first circuit to the supply and to the drain during a normal operating condition, and to connect the second circuit to the supply and to the drain during a failsafe condition.
(FR) La présente invention concerne une pompe (10) pour système hydraulique. La pompe peut présenter un plateau de réglage inclinable (28), au moins un actionneur (34) mobile pour faire basculer le plateau de réglage, un apport de fluide mis sous pression (42), et un drain (52). La pompe peut également présenter un premier circuit (48) pouvant être relié à l'apport de fluide mis sous pression et au drain et configuré pour commander le fonctionnement du ou des actionneurs, et un second circuit (50) pouvant être relié à l'apport de fluide mis sous pression et au drain et configuré pour commander le fonctionnement du ou des actionneurs. La pompe peut en outre présenter une soupape (58) configurée pour relier le premier circuit à l'apport et au drain pendant un état de fonctionnement normal, et pour relier le second circuit à l'apport et au drain pendant un état de fonctionnement à sécurité intégrée.
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