GB1291311A - Machine having a fluid operated boom or other movable member - Google Patents

Machine having a fluid operated boom or other movable member

Info

Publication number
GB1291311A
GB1291311A GB04598/70A GB1459870A GB1291311A GB 1291311 A GB1291311 A GB 1291311A GB 04598/70 A GB04598/70 A GB 04598/70A GB 1459870 A GB1459870 A GB 1459870A GB 1291311 A GB1291311 A GB 1291311A
Authority
GB
United Kingdom
Prior art keywords
chambers
movable member
actuating members
machine
members
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
GB04598/70A
Inventor
William Merrill Shook
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.)
Warner and Swasey Co
Original Assignee
Warner and Swasey Co
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 Warner and Swasey Co filed Critical Warner and Swasey Co
Publication of GB1291311A publication Critical patent/GB1291311A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press

Abstract

1291311 Hydraulic motor control circuit WARNER & SWASEY CO 25 March 1970 [21 April 1969] 14598/70 Heading F1P [Also in Division E1] A machine such as a backhoe, see Fig. 1 (not shown), having a movable member, e.g. a boom 12, subjected to loads of different magnitude has hydraulic piston and cylinder actuating members 82, 84 for moving the movable member and valves 96, 184 for controlling the actuating members 82, 84, the members 82, 84 comprising cylinders 252, 282 housing pistons 250, 284 to provide working chambers 254, 255 and 308, 318, and hollow piston rods 256, 286 and fluid supply tubes 270, 292 to provide further working chambers 280, 320, and the valves 96, 184 being operable to selectively block pressure fluid flow to and from chambers 254, 255, 308, 318, supply pressure fluid to chambers 252, 308 and connect to drain chambers 255, 318 or vice versa, and connect the chambers 280, 320 to the chambers 254, 308. The actuating members 82, 84 may either push or pull the movable member 12 against its load, and in operation connection of the chambers 280, 320 to the chambers 254, 308 operates the actuating members 82, 84 at a slower speed against a heavier load than when they are not so connected.
GB04598/70A 1969-04-21 1970-03-25 Machine having a fluid operated boom or other movable member Expired GB1291311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81803769A 1969-04-21 1969-04-21

Publications (1)

Publication Number Publication Date
GB1291311A true GB1291311A (en) 1972-10-04

Family

ID=25224486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB04598/70A Expired GB1291311A (en) 1969-04-21 1970-03-25 Machine having a fluid operated boom or other movable member

Country Status (4)

Country Link
US (1) US3530767A (en)
DE (1) DE2018621A1 (en)
FR (1) FR2045530A6 (en)
GB (1) GB1291311A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757645A (en) * 1970-06-01 1973-09-11 Hurco Mfg Co Inc Automatic shearing method and apparatus
US4033468A (en) * 1975-03-17 1977-07-05 Pettibone Corporation Hydraulic boom-lift system with selective speeds
US8126592B2 (en) * 2008-10-14 2012-02-28 Boston Dynamics, Inc. Actuator system
US10570936B2 (en) * 2014-03-07 2020-02-25 Parker-Hannifin Corporation Symmetrically loaded dual hydraulic fly-by-wire actuator

Also Published As

Publication number Publication date
US3530767A (en) 1970-09-29
FR2045530A6 (en) 1971-02-26
DE2018621A1 (en) 1970-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees