IT1301862B1 - ADVANCE ADJUSTMENT DEVICE FOR HYDRAULIC MOTORS / PUMPS. - Google Patents

ADVANCE ADJUSTMENT DEVICE FOR HYDRAULIC MOTORS / PUMPS.

Info

Publication number
IT1301862B1
IT1301862B1 IT1998MI001719A ITMI981719A IT1301862B1 IT 1301862 B1 IT1301862 B1 IT 1301862B1 IT 1998MI001719 A IT1998MI001719 A IT 1998MI001719A IT MI981719 A ITMI981719 A IT MI981719A IT 1301862 B1 IT1301862 B1 IT 1301862B1
Authority
IT
Italy
Prior art keywords
hydraulic motors
pumps
drive shaft
adjustment device
advance adjustment
Prior art date
Application number
IT1998MI001719A
Other languages
Italian (it)
Inventor
Alessandro Breviglieri
Original Assignee
Riva Calzoni Oleodinamica S P
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 Riva Calzoni Oleodinamica S P filed Critical Riva Calzoni Oleodinamica S P
Priority to IT1998MI001719A priority Critical patent/IT1301862B1/en
Publication of ITMI981719A0 publication Critical patent/ITMI981719A0/en
Priority to AT99202332T priority patent/ATE319006T1/en
Priority to DE69930051T priority patent/DE69930051T2/en
Priority to EP99202332A priority patent/EP0974752B1/en
Publication of ITMI981719A1 publication Critical patent/ITMI981719A1/en
Application granted granted Critical
Publication of IT1301862B1 publication Critical patent/IT1301862B1/en

Links

Classifications

    • 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
    • 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
    • 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)
  • Hydraulic Motors (AREA)
  • Nozzles (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Rotary 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>
IT1998MI001719A 1998-07-24 1998-07-24 ADVANCE ADJUSTMENT DEVICE FOR HYDRAULIC MOTORS / PUMPS. IT1301862B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT1998MI001719A IT1301862B1 (en) 1998-07-24 1998-07-24 ADVANCE ADJUSTMENT DEVICE FOR HYDRAULIC MOTORS / PUMPS.
AT99202332T ATE319006T1 (en) 1998-07-24 1999-07-15 FEEDBACK CIRCUIT FOR A VARIABLE SPEED HYDROMOTOR
DE69930051T DE69930051T2 (en) 1998-07-24 1999-07-15 Feedback control circuit for a variable speed hydraulic motor
EP99202332A EP0974752B1 (en) 1998-07-24 1999-07-15 Feedback control circuit for a variable speed hydromotor

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 (3)

Publication Number Publication Date
ITMI981719A0 ITMI981719A0 (en) 1998-07-24
ITMI981719A1 ITMI981719A1 (en) 2000-01-24
IT1301862B1 true IT1301862B1 (en) 2000-07-07

Family

ID=11380512

Family Applications (1)

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

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
EP0974752A3 (en) 2000-10-04
DE69930051D1 (en) 2006-04-27
ATE319006T1 (en) 2006-03-15
EP0974752A2 (en) 2000-01-26
DE69930051T2 (en) 2006-09-28
ITMI981719A1 (en) 2000-01-24
ITMI981719A0 (en) 1998-07-24
EP0974752B1 (en) 2006-03-01

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Legal Events

Date Code Title Description
0001 Granted