GB2016980A - Apparatus for operating hydraulic rams - Google Patents

Apparatus for operating hydraulic rams

Info

Publication number
GB2016980A
GB2016980A GB7914980A GB7914980A GB2016980A GB 2016980 A GB2016980 A GB 2016980A GB 7914980 A GB7914980 A GB 7914980A GB 7914980 A GB7914980 A GB 7914980A GB 2016980 A GB2016980 A GB 2016980A
Authority
GB
United Kingdom
Prior art keywords
piston
accumulator
pump
hydraulic fluid
hydraulic rams
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.)
Withdrawn
Application number
GB7914980A
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.)
B&G Hydraulics Ltd
Original Assignee
B&G Hydraulics Ltd
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 B&G Hydraulics Ltd filed Critical B&G Hydraulics Ltd
Priority to GB7914980A priority Critical patent/GB2016980A/en
Publication of GB2016980A publication Critical patent/GB2016980A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/163—Control arrangements for fluid-driven presses for accumulator-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Apparatus is provided for operating a hydraulic ram device 10 comprising a piston 11 reciprocable in a cylinder 13 between a first inoperative position and a second operative position. The apparatus comprises a pump 16 for supplying hydraulic fluid selectively to either side of the piston, and a gas- charged accumulator 27 for storing hydraulic fluid under pressure. A valve circuit is provided for connecting the pump and accumulator to the cylinder in a first condition in which the pump and accumulator are connected to one side of the piston for supplying fluid under pressure to said one side of the piston to move the piston from said first position to said second position and a second condition in which said pump is connected to the other side of the piston to move the piston from said second to said first position and the accumulator is in communication with said one side of the piston. The arrangement is such that movement of the piston from said second position to said first position forces hydraulic fluid into the accumulator to charge the accumulator. <IMAGE>
GB7914980A 1978-01-31 1979-04-30 Apparatus for operating hydraulic rams Withdrawn GB2016980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7914980A GB2016980A (en) 1978-01-31 1979-04-30 Apparatus for operating hydraulic rams

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB391578 1978-01-31
GB7914980A GB2016980A (en) 1978-01-31 1979-04-30 Apparatus for operating hydraulic rams

Publications (1)

Publication Number Publication Date
GB2016980A true GB2016980A (en) 1979-10-03

Family

ID=26238692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914980A Withdrawn GB2016980A (en) 1978-01-31 1979-04-30 Apparatus for operating hydraulic rams

Country Status (1)

Country Link
GB (1) GB2016980A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306816A1 (en) * 1987-09-08 1989-03-15 F.X. KÖGEL GMBH &amp; CO. FAHRZEUGWERKE Hydraulic length variation device for a coupling bar of a trailer with a central running gear
EP0629455A1 (en) * 1993-06-18 1994-12-21 Sms Schloemann-Siemag Aktiengesellschaft Main drive for upsetting press
EP0872644A1 (en) * 1997-04-18 1998-10-21 Claas Saulgau Gmbh Hydraulic control system for at least one double acting lifting cylinder
WO2001029329A1 (en) * 1999-10-19 2001-04-26 Vreten Ab Hydraulic actuator
GB2407624A (en) * 2003-10-28 2005-05-04 Komatsu Mfg Co Ltd Control system for hydraulic cylinder with accumulator in piston rod
US6920821B2 (en) * 2000-03-06 2005-07-26 Amada Company, Limited Device and method for controlling stop of hydraulic press and device and method for detecting trouble of speed selector valve
CN104047932A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and use method under non-stable load condition
CN104047934A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and matching method during load continuous change

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306816A1 (en) * 1987-09-08 1989-03-15 F.X. KÖGEL GMBH &amp; CO. FAHRZEUGWERKE Hydraulic length variation device for a coupling bar of a trailer with a central running gear
EP0629455A1 (en) * 1993-06-18 1994-12-21 Sms Schloemann-Siemag Aktiengesellschaft Main drive for upsetting press
US5551276A (en) * 1993-06-18 1996-09-03 Sms Schloemann-Siemag Aktiengesellschaft Upsetting press main drive
CN1057031C (en) * 1993-06-18 2000-10-04 Sms舒路曼-斯玛公司 Main driving equipment of preforging machine
EP0872644A1 (en) * 1997-04-18 1998-10-21 Claas Saulgau Gmbh Hydraulic control system for at least one double acting lifting cylinder
WO2001029329A1 (en) * 1999-10-19 2001-04-26 Vreten Ab Hydraulic actuator
US6920821B2 (en) * 2000-03-06 2005-07-26 Amada Company, Limited Device and method for controlling stop of hydraulic press and device and method for detecting trouble of speed selector valve
GB2407624A (en) * 2003-10-28 2005-05-04 Komatsu Mfg Co Ltd Control system for hydraulic cylinder with accumulator in piston rod
US7047734B2 (en) 2003-10-28 2006-05-23 Komatsu Ltd. Hydraulic circuit for hydraulic cylinder
GB2407624B (en) * 2003-10-28 2007-05-16 Komatsu Mfg Co Ltd Hydraulic circuit for hydraulic cylinder
CN104047932A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and use method under non-stable load condition
CN104047934A (en) * 2013-03-15 2014-09-17 宝钢工业炉工程技术有限公司 Potential energy recovery system of lifting equipment and matching method during load continuous change
CN104047932B (en) * 2013-03-15 2016-03-30 宝钢工业炉工程技术有限公司 The potential energy recovery system of jacking equipment under Vnsteady loads and using method thereof

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)