GB1118060A - Load balancing system for hydraulic jack - Google Patents

Load balancing system for hydraulic jack

Info

Publication number
GB1118060A
GB1118060A GB54101/66A GB5410166A GB1118060A GB 1118060 A GB1118060 A GB 1118060A GB 54101/66 A GB54101/66 A GB 54101/66A GB 5410166 A GB5410166 A GB 5410166A GB 1118060 A GB1118060 A GB 1118060A
Authority
GB
United Kingdom
Prior art keywords
rod
fluid
pressure
bore
jack
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
GB54101/66A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1118060A publication Critical patent/GB1118060A/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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/025—Installations or systems with accumulators used for thermal compensation, e.g. to collect expanded fluid and to return it to the system as the system fluid cools down
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • 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
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/064—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam with devices for saving the compressible medium
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1466—Hollow piston sliding over a stationary rod inside the cylinder
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • 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
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
    • 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
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5158—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and an output member
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8755—Emergency shut-down

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

1,118,060. Hydraulic jacks; counterbalancing loads. CATERPILLAR TRACTOR CO. 2 Dec., 1966 [11 Jan., 1966], No. 54101/66. Headings B8B and B8J. Means is provided to balance at least a portion of the weight of a machine component (not shown) actuated by a double acting hydraulic jack 10 with,a main cylinder 12, piston 26 and rod 14. The rod 14 has bore 34 opening at its inner end, a stationary ring member 38 engaging the wall of the bore 34 and defining one end of an expansible chamber within the rod bore 34 supplied with pressure fluid through a tube 36, thereby tending to extend the rod 14 relative to the cylinder 12. Normal operation of the jack 10 is provided conventionally by directing fluid under pressure through either port 46 or port 48 to extend or retract the rod 14. The jack 10 is connected between a vehicle and a component to be adjusted and when fluid pressure is directed through the tube 36 from an external source such as an accumulator, sufficient pressure may be introduced into the bore 34 to compensate or offset the weight of the component. Fluid pressure introduced through the port 46 is thus utilized entirely for the manipulation of the net payload upon extension of the jack. Fig. 2 (not shown) illustrates a modification wherein the jack is retracted to manipulate the load. Fig. 3 shows an hydraulic circuit adapted to supply fluid pressure from a conventional accumulator 55 to the expansible chamber within the rod bore 34 (or (34<SP>1</SP>) of the modified embodiment). The accumulator 55 is initially charged in a conventional manner by alternately directing fluid from an hydraulic jack circuit (not shown) to ports 46 and 48. Extension of the rod 14 draws fluid from a reservoir 65 through a check valve 73 into rod bore chamber 34, while reverse movement of the rod 14 directs such fluid back through line 59 and check valve 75 into the accumulator 55 which has a piston 56 and a supply of compressible fluid 57. At a predetermined pressure control valve 63 opens and remains open while the pressure in the accumulator is in the operative range. A safety valve 69 has a spool 77 normally urged to open the valve 69 under the action of a spring 80, but when the engine of the vehicle is running lubricating oil pressure therefrom introduced through a conduit 82 keeps the valve 69 closed.
GB54101/66A 1966-01-11 1966-12-02 Load balancing system for hydraulic jack Expired GB1118060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US519855A US3353352A (en) 1966-01-11 1966-01-11 Load balancing system for hydraulic jack

Publications (1)

Publication Number Publication Date
GB1118060A true GB1118060A (en) 1968-06-26

Family

ID=24070089

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54101/66A Expired GB1118060A (en) 1966-01-11 1966-12-02 Load balancing system for hydraulic jack

Country Status (4)

Country Link
US (1) US3353352A (en)
DE (1) DE1286278B (en)
FR (1) FR1507468A (en)
GB (1) GB1118060A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199618A (en) * 1987-01-08 1988-07-13 Gen Motors Corp Hydraulic actuator
FR2753751A1 (en) * 1996-09-23 1998-03-27 Chabas & Besson Hydraulique Ma Single acting hydraulic lifting jack
CN116624442A (en) * 2023-07-24 2023-08-22 南京理工大学 Electric putter rocking arm braced system with moment of gravity compensation

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1159465A (en) * 1966-07-06 1969-07-23 Hugo Cordes Control for a Ramming Hammer with Hydraulic Drive
US3548573A (en) * 1968-04-17 1970-12-22 Cessna Aircraft Co Cylinder with integral accumulator
US3680400A (en) * 1969-05-14 1972-08-01 Mesta Machine Co Force-multiplying mechanisms
US3622124A (en) * 1970-05-18 1971-11-23 Kenneth R Sidles Hydraulic lift jack
FR2208571A6 (en) * 1972-11-29 1974-06-21 Inst Francais Du Petrole
FR2256822B1 (en) * 1974-01-04 1977-06-10 Patent & Inventions Ltd
DE2741497C2 (en) * 1977-09-15 1981-09-17 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg Hydraulic system for the lifting drive of a lift truck
US4409884A (en) * 1981-03-25 1983-10-18 Mcdonnell Douglas Corporation Synchronization cylinder
GB8503501D0 (en) * 1985-02-12 1985-03-13 Thomsen Sales & Service Ltd A Reciprocatory pumps
DE3608338A1 (en) * 1986-03-13 1987-09-17 Fuchs Systemtechnik Gmbh Hydraulic actuator for an electrode support arm of an arc furnace
SE461391B (en) * 1987-10-28 1990-02-12 Bt Ind Ab HYDRAULIC LIFTING DEVICE
US4828229A (en) * 1987-11-16 1989-05-09 General Motors Corporation Hydraulic actuator for active ride suspension
US4955282A (en) * 1989-03-27 1990-09-11 Ranson Ronald W Uniform flow hydraulic system
US5099749A (en) * 1990-04-19 1992-03-31 Darish Joseph J Compound motion fluid actuating device and method
US5172625A (en) * 1991-11-04 1992-12-22 Latham Robert P Hydraulic cylinder with lateral support
JPH05340407A (en) * 1992-06-04 1993-12-21 Etsuo Ando Hydraulic cylinder
US5191825A (en) * 1992-06-12 1993-03-09 Doben Limited Low-impact air cylinder
US7448310B2 (en) * 2004-03-11 2008-11-11 Atkisek Corporation Innerscoping hydraulic system
NL1029161C2 (en) * 2005-06-01 2006-12-04 Actuant Corp Hydraulic drive cylinder with gas spring action for e.g. opening and closing car doors, includes stationary tube with internal volume connected to blind axial bore in piston rod
US20070068754A1 (en) * 2005-09-26 2007-03-29 Furgala George W Gas-biased hydraulic cylinder
DE102007061294A1 (en) 2007-12-10 2009-06-18 Thomas Sauer Hydraulic cylinder has three lifting chambers and piston-shaped lifting chamber, which has fluid opening to hydraulic pipe on working machine side lying in bore of piston rod
DE102011106260A1 (en) * 2011-05-18 2012-11-22 Liebherr-Hydraulikbagger Gmbh Working implement, in particular excavator or machine for material handling
GB2498190A (en) * 2012-01-04 2013-07-10 Nat Oilwell Varco Lp Apparatus and method for positioning and connecting equipment on a drilling rig
US9435359B2 (en) * 2012-02-13 2016-09-06 Schlumberger Technology Corporation Adaptive hydraulic cylinder with floating seal interface
JP6085163B2 (en) * 2012-12-13 2017-02-22 株式会社昭和 Energy-saving hydraulic cylinder device for used paper compression packaging machine
DE102013013690A1 (en) * 2013-08-16 2015-02-19 Hydac Technology Gmbh System for automatically adapting a predefinable amount of gas input and actuating device with such a system
CN104154070A (en) * 2014-08-22 2014-11-19 实用动力(中国)工业有限公司 Double-acting nut-locking hydrocylinder
US9494168B2 (en) * 2014-08-26 2016-11-15 Ut-Battelle, Llc Energy efficient fluid powered linear actuator with variable area and concentric chambers
US9964124B2 (en) * 2015-09-02 2018-05-08 Deere & Company Piston accumulator with integrated cylinder rod

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GB133119A (en) *
US1509000A (en) * 1924-03-17 1924-09-16 George N Simpson Power mechanism
US2193736A (en) * 1936-11-14 1940-03-12 Onions John Henry Fluid pressure motor
US2351398A (en) * 1941-12-29 1944-06-13 Darrell Marsden Dowding Hydrovacuumatic balance
US2664859A (en) * 1950-09-11 1954-01-05 Timken Roller Bearing Co Hydraulically controlled fluid driven reciprocating actuator
US2641106A (en) * 1952-01-03 1953-06-09 Cleveland Automatic Machine Co Electrohydraulic system having a safety shutoff valve for its accumulator
US2896583A (en) * 1956-12-28 1959-07-28 Jarvis A Stixrood Counterbalancing hydraulic cylinder
US2833556A (en) * 1957-01-30 1958-05-06 Athey Products Corp Weight transfer system and apparatus for tractor-trailers
US3237406A (en) * 1962-12-10 1966-03-01 Raymond Int Inc Hydraulic hammer
US3186305A (en) * 1963-07-02 1965-06-01 Ex Cell O Corp Hydraulic actuator mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199618A (en) * 1987-01-08 1988-07-13 Gen Motors Corp Hydraulic actuator
GB2199618B (en) * 1987-01-08 1991-01-02 Gen Motors Corp Hydraulic actuator system
FR2753751A1 (en) * 1996-09-23 1998-03-27 Chabas & Besson Hydraulique Ma Single acting hydraulic lifting jack
CN116624442A (en) * 2023-07-24 2023-08-22 南京理工大学 Electric putter rocking arm braced system with moment of gravity compensation

Also Published As

Publication number Publication date
DE1286278B (en) 1969-01-02
US3353352A (en) 1967-11-21
FR1507468A (en) 1967-12-29

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