ATE319006T1 - FEEDBACK CIRCUIT FOR A VARIABLE SPEED HYDROMOTOR - Google Patents

FEEDBACK CIRCUIT FOR A VARIABLE SPEED HYDROMOTOR

Info

Publication number
ATE319006T1
ATE319006T1 AT99202332T AT99202332T ATE319006T1 AT E319006 T1 ATE319006 T1 AT E319006T1 AT 99202332 T AT99202332 T AT 99202332T AT 99202332 T AT99202332 T AT 99202332T AT E319006 T1 ATE319006 T1 AT E319006T1
Authority
AT
Austria
Prior art keywords
drive shaft
hydromotor
variable speed
feedback circuit
propulsors
Prior art date
Application number
AT99202332T
Other languages
German (de)
Inventor
Alessandro Breviglieri
Original Assignee
Parker Calzoni S R L
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 Parker Calzoni S R L filed Critical Parker Calzoni S R L
Application granted granted Critical
Publication of ATE319006T1 publication Critical patent/ATE319006T1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, 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
    • F04B49/12—Control, 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 by varying the length of stroke of the working members
    • F04B49/123—Control, 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 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/128—Control, 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 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the cylinders, e.g. by moving a cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0447—Controlling
    • F03C1/0457—Controlling by changing the effective piston stroke
    • F03C1/046—Controlling by changing the effective piston stroke by changing the excentricity of one element relative to another element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/10—Control of working-fluid admission or discharge peculiar thereto
    • F01B3/103—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block
    • F01B3/104—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block by turning the valve plate

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Electric Motors In General (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Nozzles (AREA)
  • Valve Device For Special Equipments (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Device for adjusting the advance of hydraulic motors/pumps provided with propulsors (13) actuating an eccentric drive shaft (14) and with a rotating group (20) for distribution of the fluid actuating the propulsors (13), said rotating distribution group (20) comprising at least one plate (22) mounted idle on the drive shaft (14) and means (31;131;231) designed to co-operate with said plate (22) so as to produce its rotational actuation relative to the drive shaft, said rotation being able to be actuated in both directions and between predetermined angular end-of-travel positions. <IMAGE>
AT99202332T 1998-07-24 1999-07-15 FEEDBACK CIRCUIT FOR A VARIABLE SPEED HYDROMOTOR ATE319006T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1998MI001719A IT1301862B1 (en) 1998-07-24 1998-07-24 ADVANCE ADJUSTMENT DEVICE FOR HYDRAULIC MOTORS / PUMPS.

Publications (1)

Publication Number Publication Date
ATE319006T1 true ATE319006T1 (en) 2006-03-15

Family

ID=11380512

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99202332T ATE319006T1 (en) 1998-07-24 1999-07-15 FEEDBACK CIRCUIT FOR A VARIABLE SPEED HYDROMOTOR

Country Status (4)

Country Link
EP (1) EP0974752B1 (en)
AT (1) ATE319006T1 (en)
DE (1) DE69930051T2 (en)
IT (1) IT1301862B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052472A (en) * 1935-02-04 1936-08-25 Jack Moody Fluid engine
JPS4820082Y1 (en) * 1970-09-24 1973-06-09
US4347778A (en) * 1979-08-17 1982-09-07 Murray Jerome L Reversible fluid unit
IT1266639B1 (en) * 1993-10-29 1997-01-09 Riva Calzoni Spa ROTARY GROUP FOR DISTRIBUTION OF PRESSURE FLUID PARTICULARLY FOR HYDRAULIC MOTORS WITH DOUBLE SERIES OF THRUSTERS ACTING IN COUNTER-PHASE

Also Published As

Publication number Publication date
EP0974752A2 (en) 2000-01-26
DE69930051D1 (en) 2006-04-27
IT1301862B1 (en) 2000-07-07
ITMI981719A1 (en) 2000-01-24
EP0974752B1 (en) 2006-03-01
ITMI981719A0 (en) 1998-07-24
DE69930051T2 (en) 2006-09-28
EP0974752A3 (en) 2000-10-04

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties