EP0685647A3 - Hydraulic radial piston motor with variable cylinder capacity. - Google Patents

Hydraulic radial piston motor with variable cylinder capacity. Download PDF

Info

Publication number
EP0685647A3
EP0685647A3 EP95200926A EP95200926A EP0685647A3 EP 0685647 A3 EP0685647 A3 EP 0685647A3 EP 95200926 A EP95200926 A EP 95200926A EP 95200926 A EP95200926 A EP 95200926A EP 0685647 A3 EP0685647 A3 EP 0685647A3
Authority
EP
European Patent Office
Prior art keywords
radial piston
piston motor
eccentric ring
variable cylinder
cylinder capacity
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.)
Granted
Application number
EP95200926A
Other languages
German (de)
French (fr)
Other versions
EP0685647B1 (en
EP0685647A2 (en
Inventor
Alessandro Breveglieri
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.)
RIVA CALZONI OLEODINAMICA S.P.A.
Original Assignee
Riva Calzoni SpA
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 SpA filed Critical Riva Calzoni SpA
Publication of EP0685647A2 publication Critical patent/EP0685647A2/en
Publication of EP0685647A3 publication Critical patent/EP0685647A3/en
Application granted granted Critical
Publication of EP0685647B1 publication Critical patent/EP0685647B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • F04B49/125—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 actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hydraulic Motors (AREA)
  • Valve Device For Special Equipments (AREA)
  • Reciprocating Pumps (AREA)
  • Vehicle Body Suspensions (AREA)
  • Braking Systems And Boosters (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

A variable-displacement hydraulic motor with radial cylinders supplied by a rotary fluid distributor (4) and acting on an eccentric ring (6) axially secured to a crankshaft (7) but capable of moving radially with respect thereto, being provided with a device for operating and controlling the variation of eccentricity of eccentric ring (6) with respect to crankshaft (7), which comprises at least one pair of actuating pistons (8, 9) located in counterposition to and independent of one another, arranged in a radial sense between shaft (7) and ring (6), each of which is made mechanically integral with such eccentric ring (6) via appropriate means of connection (8a, 9a), and at least one pair of cross-connected valves (10) to block the flow of the fluid operating such actuating pistons (8, 9). <IMAGE>
EP95200926A 1994-04-29 1995-04-12 Hydraulic radial piston motor with variable cylinder capacity Expired - Lifetime EP0685647B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI940840A IT1271634B (en) 1994-04-29 1994-04-29 VARIABLE DISPLACEMENT RADIAL CYLINDER HYDRAULIC MOTOR THROUGH SEPARATE ACTUATORS AND RELATED CONTROL VALVES
ITMI940840 1994-04-29

Publications (3)

Publication Number Publication Date
EP0685647A2 EP0685647A2 (en) 1995-12-06
EP0685647A3 true EP0685647A3 (en) 1996-02-21
EP0685647B1 EP0685647B1 (en) 2000-07-05

Family

ID=11368783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95200926A Expired - Lifetime EP0685647B1 (en) 1994-04-29 1995-04-12 Hydraulic radial piston motor with variable cylinder capacity

Country Status (4)

Country Link
EP (1) EP0685647B1 (en)
AT (1) ATE194411T1 (en)
DE (1) DE69517751T2 (en)
IT (1) IT1271634B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635458A1 (en) * 1996-08-31 1998-03-05 Tiefbohrtechnik Gmbh Tbt Membrane pump
ATE459801T1 (en) * 2006-04-20 2010-03-15 Sai Societa Apparecchiature Idrauliche Spa HYDRAULIC MOTOR WITH RADIAL CYLINDERS AND CONTINUOUSLY ADJUSTABLE DISPLACEMENT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203054A1 (en) * 1971-01-29 1972-08-24 Chamberlain Ind Ltd Hydraulic motor or the like.
GB1598027A (en) * 1976-12-02 1981-09-16 Duesterloh Gmbh Hydrostatic radial piston machine
EP0122770A1 (en) * 1983-04-11 1984-10-24 BROWN &amp; SHARPE FLUID POWER LIMITED Control system for variable displacement motors
EP0342751A1 (en) * 1988-05-19 1989-11-23 Bruno Giamello Radial piston hydraulic motor of variable cylinder capacity

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203054A1 (en) * 1971-01-29 1972-08-24 Chamberlain Ind Ltd Hydraulic motor or the like.
GB1598027A (en) * 1976-12-02 1981-09-16 Duesterloh Gmbh Hydrostatic radial piston machine
EP0122770A1 (en) * 1983-04-11 1984-10-24 BROWN &amp; SHARPE FLUID POWER LIMITED Control system for variable displacement motors
EP0342751A1 (en) * 1988-05-19 1989-11-23 Bruno Giamello Radial piston hydraulic motor of variable cylinder capacity

Also Published As

Publication number Publication date
IT1271634B (en) 1997-06-04
ITMI940840A1 (en) 1995-10-29
ATE194411T1 (en) 2000-07-15
DE69517751D1 (en) 2000-08-10
DE69517751T2 (en) 2000-11-16
ITMI940840A0 (en) 1994-04-29
EP0685647B1 (en) 2000-07-05
EP0685647A2 (en) 1995-12-06

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