GB1206686A - Hydraulic motor drive - Google Patents

Hydraulic motor drive

Info

Publication number
GB1206686A
GB1206686A GB46340/68A GB4634068A GB1206686A GB 1206686 A GB1206686 A GB 1206686A GB 46340/68 A GB46340/68 A GB 46340/68A GB 4634068 A GB4634068 A GB 4634068A GB 1206686 A GB1206686 A GB 1206686A
Authority
GB
United Kingdom
Prior art keywords
pressure
motor
ducts
valve
supply
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
GB46340/68A
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.)
Cascade Corp
Original Assignee
Cascade Corp
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 Cascade Corp filed Critical Cascade Corp
Publication of GB1206686A publication Critical patent/GB1206686A/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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • 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
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F15B2011/0243—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits the regenerative circuit being activated or deactivated automatically
    • 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
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single 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
    • F15B2211/30—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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional 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
    • F15B2211/30—Directional control
    • F15B2211/365—Directional control combined with flow control and pressure control
    • 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
    • F15B2211/7058—Rotary 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
    • F15B2211/70—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

1,206,686. Hydrostatic transmission control. CASCADE CORP. 30 Sept., 1968 [3 Nov., 1967], No. 46340/68. Heading F2D. [Also in Division G3] In a hydrostatic transmission for a loadhandling apparatus of a truck wherein a pump 70 supplies pressure liquid through a reversing valve 74 to parallel motors 38, 40 driving a common output shaft 44, a pressure-sensitive valve 52 cuts the pressure liquid supply to the motor 38, which is permitted to freewheel, when the supply pressure is below a predetermined value for high-speed, low-torque drive by the motor 40 alone and connects the motor 38 to the pressure liquid supply when the supply pressure exceeds the predetermined value for low-speed, high-torque drive by both motors in parallel. The pressure-sensitive valve 52 has a slidable valve spool 142 biased by springs 154, 156 to a central position in which it blocks the pump supply and return ducts 58, 60 and interconnects the ducts 54, 56 to the motor 38 which is therefor permitted to freewheel. When the pressure in the duct 58 (or 60) attains a predetermined value it opens a ball valve 166 (as 170) and acts through ducts 130, 116 (as 132, 120) on the left (or right) end of the valve spool 142 and moves the spool right (or left) to interconnect ducts 58, 54; 60, 56, whereupon both motors operate in parallel.
GB46340/68A 1967-11-03 1968-09-30 Hydraulic motor drive Expired GB1206686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68043167A 1967-11-03 1967-11-03

Publications (1)

Publication Number Publication Date
GB1206686A true GB1206686A (en) 1970-09-30

Family

ID=24731080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46340/68A Expired GB1206686A (en) 1967-11-03 1968-09-30 Hydraulic motor drive

Country Status (3)

Country Link
US (1) US3473442A (en)
DE (2) DE6804807U (en)
GB (1) GB1206686A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468769A1 (en) * 1979-11-05 1981-05-08 Commercial Shearing Two speed valve and bi-directional motor system - in which discharge fluid from two motors is recirculated through one or both motors
GB2219845A (en) * 1988-06-14 1989-12-20 Hiroshi Sato Parallel drive hydraulic motor system
WO2014166855A1 (en) * 2013-04-12 2014-10-16 Holp Gmbh Rotational device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836478B1 (en) * 1970-05-15 1973-11-05
US3768263A (en) * 1971-12-27 1973-10-30 Hyster Co Hydraulic control system for two-speed winch
DE2339290A1 (en) * 1972-12-04 1974-06-12 Tyrone Hydraulics FLUID CONTROL DEVICE
US3849985A (en) * 1972-12-04 1974-11-26 Tyrone Hydraulics Control system for multiple motor hydraulic means
US3987768A (en) * 1974-01-14 1976-10-26 Deere & Company Vehicle auxiliary hydrostatic drive system
US3972186A (en) * 1975-02-28 1976-08-03 Caterpillar Tractor Co. Speed override control for hydraulic motors
FR2358600A1 (en) * 1976-07-12 1978-02-10 Inst Cercetare Si Proiectare T Flow divider for parallel hydraulic motors - has housing with two displaceable throttle spools held central by springs
US4653271A (en) * 1984-09-27 1987-03-31 Armco Inc. Boom crane centering
US4782662A (en) * 1984-09-27 1988-11-08 National-Oilwell Boom crane centering
US11051453B2 (en) 2018-11-14 2021-07-06 Cnh Industrial America Llc Reel drive assembly for an agricultural header

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370526A (en) * 1942-02-20 1945-02-27 Gen Electric Hydraulic torque transmission arrangement
US2374588A (en) * 1942-08-22 1945-04-24 Gen Electric Hydraulic torque transmission arrangement
US2500627A (en) * 1947-07-15 1950-03-14 Gerotor May Corp Fluid distributing valve
US2616259A (en) * 1947-07-15 1952-11-04 Gerotor May Corp Hydraulic system, including multiple motors and controls therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468769A1 (en) * 1979-11-05 1981-05-08 Commercial Shearing Two speed valve and bi-directional motor system - in which discharge fluid from two motors is recirculated through one or both motors
GB2219845A (en) * 1988-06-14 1989-12-20 Hiroshi Sato Parallel drive hydraulic motor system
WO2014166855A1 (en) * 2013-04-12 2014-10-16 Holp Gmbh Rotational device

Also Published As

Publication number Publication date
DE1806264B2 (en) 1972-05-10
DE1806264A1 (en) 1969-06-26
US3473442A (en) 1969-10-21
DE6804807U (en) 1969-07-17

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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