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GB1303188A - - Google Patents

Info

Publication number
GB1303188A
GB1303188A GB2596070A GB2596070A GB1303188A GB 1303188 A GB1303188 A GB 1303188A GB 2596070 A GB2596070 A GB 2596070A GB 2596070 A GB2596070 A GB 2596070A GB 1303188 A GB1303188 A GB 1303188A
Authority
GB
United Kingdom
Prior art keywords
spool
output shaft
pressure
pistons
fluid
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.)
Expired
Application number
GB2596070A
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 filed Critical
Publication of GB1303188A publication Critical patent/GB1303188A/en
Expired legal-status Critical Current

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
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0678—Control
    • 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
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/061—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F03C1/0615—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders distributing members
    • F03C1/0618—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders distributing members cylindrical distribution 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • 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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/14—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with rotary servomotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Hydraulic Motors (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1303188 Fluid-pressure servomotor systems CINCINNATI MILACRON Inc 29 May 1970 [3 June 1969] 25960/70 Heading G3P A closed-loop torque amplifier comprises an electrical stepping motor 20 whose output shaft 22 is connected by a rotary nut and screw assembly 26 to a spool 50 which on axial movement connects fluid-pressure inlet and exhaust ports 100, 108 to the pistons 102 of a swash-plate motor 90 having a rotary output shaft 92 and on rotary movement distributes the fluid pressure to the pistons 102. A coupling 94 connects the output shaft 92 to the spool to rotate it and thus decrease the axial and angular movement of the spool relative the output shaft 22 of the stepping motor. The spool is formed with annular grooves 54, 62 for connection with the inlet and exhaust ports 82, 82a, 82b, and which are connected by longitudinal bores 56, 64 to radial bores 70, 72 that open into arcuate grooves 66, 68 for distributing fluid pressure via radial ports 88 to the pistons 102. Other arcuate grooves (74), 76 connected via radial ports (78), 80 to bores 56, 64 are provided to pressure balance the spool radially. Drain hole (58) balances the spool axially.
GB2596070A 1969-06-03 1970-05-29 Expired GB1303188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83007669A 1969-06-03 1969-06-03

Publications (1)

Publication Number Publication Date
GB1303188A true GB1303188A (en) 1973-01-17

Family

ID=25256256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2596070A Expired GB1303188A (en) 1969-06-03 1970-05-29

Country Status (7)

Country Link
US (1) US3596569A (en)
JP (1) JPS4936885B1 (en)
DE (1) DE2026424C3 (en)
FR (1) FR2048993A5 (en)
GB (1) GB1303188A (en)
NL (1) NL7007795A (en)
SE (1) SE361918B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229877A1 (en) * 1973-05-17 1974-12-13 Agiman Jacques Electro-hydraulic rotating servo-jack - controls high torque rotating movement through a small servo motor

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009643A (en) * 1975-02-26 1977-03-01 Heinz Thumm Hydraulic motor for rotating the bucket of an excavating machine
US4286927A (en) * 1978-08-14 1981-09-01 Mcdonnell Douglas Corporation Hydraulic power transfer unit
US4253380A (en) * 1978-09-05 1981-03-03 David P. McConnell Rotary manifold valve mechanism
US4491057A (en) * 1982-08-03 1985-01-01 Anthony D. Morris Axial piston machine having double acting pistons and a rotary control valve
JPS60182365A (en) * 1984-02-28 1985-09-17 Nippon Denso Co Ltd Radial plunger pump
JPS6371501A (en) * 1986-09-12 1988-03-31 Ckd Corp Axial type air motor
DE4015101A1 (en) * 1990-05-11 1991-11-14 Eckehart Schulze HYDRAULIC DRIVE DEVICE
US8235070B2 (en) * 2008-06-02 2012-08-07 Eaton Corporation Two position three way valve
US8302627B2 (en) * 2008-06-02 2012-11-06 Eaton Corporation Hydraulic system
US8646481B2 (en) * 2008-06-02 2014-02-11 Eaton Corporation Valve having integrated pressure assist mechanism
US8939173B2 (en) * 2010-07-14 2015-01-27 Mac Valves, Inc. Stepper motor operated balanced flow control valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US786652A (en) * 1902-03-13 1905-04-04 Standard Plunger Elevator Company Pilot-valve for hydraulic elevators.
US3131602A (en) * 1961-11-16 1964-05-05 Kingston Products Corp Steering torque amplifier
US3310284A (en) * 1964-08-20 1967-03-21 Fujitsu Ltd Hydraulic system rotary pilot valve
GB1216482A (en) * 1967-04-07 1970-12-23 Pratt Prec Hydraulic Ltd Improvements in or relating to hydraulic torque amplifiers
US3457836A (en) * 1967-05-29 1969-07-29 Superior Electric Co Digitally operated electrohydraulic power system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229877A1 (en) * 1973-05-17 1974-12-13 Agiman Jacques Electro-hydraulic rotating servo-jack - controls high torque rotating movement through a small servo motor

Also Published As

Publication number Publication date
NL7007795A (en) 1970-12-07
DE2026424B2 (en) 1973-04-05
JPS4936885B1 (en) 1974-10-04
DE2026424A1 (en) 1970-12-10
DE2026424C3 (en) 1973-10-25
FR2048993A5 (en) 1971-03-19
US3596569A (en) 1971-08-03
SE361918B (en) 1973-11-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee