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GB1176318A - Improvements in the Oil-Hydraulic Control of Stepwise Movements for the Rapid Acceleration of Large Masses - Google Patents

Improvements in the Oil-Hydraulic Control of Stepwise Movements for the Rapid Acceleration of Large Masses

Info

Publication number
GB1176318A
GB1176318A GB1804868A GB1804868A GB1176318A GB 1176318 A GB1176318 A GB 1176318A GB 1804868 A GB1804868 A GB 1804868A GB 1804868 A GB1804868 A GB 1804868A GB 1176318 A GB1176318 A GB 1176318A
Authority
GB
United Kingdom
Prior art keywords
valve
motor
pressure
exhaust
opened
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
GB1804868A
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.)
Schloemann AG
Original Assignee
Schloemann AG
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 Schloemann AG filed Critical Schloemann AG
Publication of GB1176318A publication Critical patent/GB1176318A/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
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/85—Control during special operating conditions
    • F15B2211/851—Control during special operating conditions during starting
    • 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
    • F15B2211/85—Control during special operating conditions
    • F15B2211/853—Control during special operating conditions during stopping

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Manipulator (AREA)

Abstract

1,176,318. Forging manipulator control. SCHLOEMANN A.G. 17 April, 1968 [29 April, 1967], No. 18048/68. Heading B3H. [Also in Division F1] In an hydraulic system wherein an hydraulic motor 9 is required to impart stepwise movement to a load having a high inertia, e.g. a workpiece gripped by manipulator tongs during forging, the supply to, and exhaust from opposite sides 8, 10 of the motor are cut-off at the end of a step by closure of a valve 2, the consequent build-up in pressure on the exhaust side 10, due to the inertia of the load, being relieved through a pressure-limiting retardation valve 14 and a by-pass line 15 to the supply side 8. The system thus causes the supply and exhaust sides 8, 10 of the motor to remain under a residual pressure so that when the next step is initiated by opening of the valve 2, the pressure in the exhaust side collapses while the supply side is still under an initial pressure. When the valve 2 is opened, a valve 3 is also opened so that exhausted liquid by-passes the limiting valve 14 and a non-return valve 13 to flow to a return line 12. A non-return valve 1 in the by-pass line 15 is opened when the valve 2 is closed. The motor 9 may be a double-acting piston and cylinder type or, as shown, a rotary motor. The system described is duplicated to enable stepwise movement of the motor to be reversed. The valves 1, 2, 3 may be electrically or mechanically operated.
GB1804868A 1967-04-29 1968-04-17 Improvements in the Oil-Hydraulic Control of Stepwise Movements for the Rapid Acceleration of Large Masses Expired GB1176318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC040641 1967-04-29

Publications (1)

Publication Number Publication Date
GB1176318A true GB1176318A (en) 1970-01-01

Family

ID=7435791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1804868A Expired GB1176318A (en) 1967-04-29 1968-04-17 Improvements in the Oil-Hydraulic Control of Stepwise Movements for the Rapid Acceleration of Large Masses

Country Status (4)

Country Link
DE (1) DE1627617B1 (en)
FR (1) FR1565088A (en)
GB (1) GB1176318A (en)
SE (1) SE355307B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194293A (en) * 1986-08-20 1988-03-02 British Nuclear Fuels Plc Improvements in hydraulic lift systems
CN102114517A (en) * 2010-11-30 2011-07-06 浙江大学 Displacement-force compound control lifting system for forging manipulator
CN104588555A (en) * 2014-11-26 2015-05-06 北方重工集团有限公司 Horizontal buffering hydraulic circuit for large forging manipulator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108087362B (en) 2016-11-22 2021-04-16 丹佛斯动力系统有限责任两合公司 Open hydraulic fluid flow circuit apparatus and method of controlling a hydraulic circuit
CN108543903B (en) * 2018-04-16 2019-03-29 西安科技大学 Energy recoverable large operation machine tong holder buffers dynamical system and its design method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB892216A (en) * 1958-04-17 1962-03-21 British Iron Steel Research Improvements in or relating to control systems
GB1037114A (en) * 1964-05-06 1966-07-27 Davy & United Eng Co Ltd Forging method and apparatus
FR1459361A (en) * 1965-10-19 1966-04-29 Dango & Dienenthal Kommanditge Forge manipulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194293A (en) * 1986-08-20 1988-03-02 British Nuclear Fuels Plc Improvements in hydraulic lift systems
CN102114517A (en) * 2010-11-30 2011-07-06 浙江大学 Displacement-force compound control lifting system for forging manipulator
CN102114517B (en) * 2010-11-30 2012-11-07 浙江大学 Displacement-force compound control lifting system for forging manipulator
CN104588555A (en) * 2014-11-26 2015-05-06 北方重工集团有限公司 Horizontal buffering hydraulic circuit for large forging manipulator

Also Published As

Publication number Publication date
DE1627617B1 (en) 1971-11-25
SE355307B (en) 1973-04-16
FR1565088A (en) 1969-04-25

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