EP0967399A3 - Multiple-stage double-acting hydraulic cylinder with hydraulic circuit, especially for elevating - Google Patents

Multiple-stage double-acting hydraulic cylinder with hydraulic circuit, especially for elevating Download PDF

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Publication number
EP0967399A3
EP0967399A3 EP99112185A EP99112185A EP0967399A3 EP 0967399 A3 EP0967399 A3 EP 0967399A3 EP 99112185 A EP99112185 A EP 99112185A EP 99112185 A EP99112185 A EP 99112185A EP 0967399 A3 EP0967399 A3 EP 0967399A3
Authority
EP
European Patent Office
Prior art keywords
piston rod
piston
storage tank
elevating
hydraulic cylinder
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Withdrawn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
EP99112185A
Other languages
German (de)
French (fr)
Other versions
EP0967399A2 (en
Inventor
Holger Dipl.-Ing. Wehner
Helfried Dipl.-Ing.(FH) Sterzel
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.)
Bison Stematec Maschinenbau und Hubarbeitsbuehnen Produktionsgesellschaft mbH
Original Assignee
Bison Stematec Maschinenbau und Hubarbeitsbuehnen Produktionsgesellschaft mbH
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 Bison Stematec Maschinenbau und Hubarbeitsbuehnen Produktionsgesellschaft mbH filed Critical Bison Stematec Maschinenbau und Hubarbeitsbuehnen Produktionsgesellschaft mbH
Publication of EP0967399A2 publication Critical patent/EP0967399A2/en
Publication of EP0967399A3 publication Critical patent/EP0967399A3/en
Withdrawn legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping 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
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Actuator (AREA)

Abstract

Die vorliegende Erfindung betrifft einen mehrstufigen, doppelt wirkenden Hydraulikzylinder mit Hydraulikanordnung, und mit einer Schaltanordnung, durch die wahlweise wenigstens einem Ringraum oder wenigstens einem der zwischen den Kolben der Kolbenstangen bzw. zwischen dem Kolben der ersten Kolbenstange und dem Gehäuseboden ausgebildeten Kammern Hydraulikfluid zuführbar ist, wobei die entsprechende andere Seite des Kolbens mit einem Vorratstank verbunden ist, wobei die Ringräume (18) untereinander durch Schaltbohrungen (24) in der Kolbenstange (16) fluidisch miteinander verbunden sind, wobei die Schaltbohrungen (24) durch den Kolben der nächstinneren Kolbenstange überfahrbar sind und dann eine fluidische Verbindung zwischen der Kammer (32) der äußeren Kolbenstange und dem Ringraum (18) der nächstinneren Kolbenstange hergestellt ist, und wobei in der Verbindung mit dem Vorratstank (68) ein Sperrventil (66) angeordnet ist, mittels dessen der Rückfluß von Hydraulikfluid vom Hydraulikzylinder (10) zum Vorratstank (66) absperrbar ist.

Figure 00000001
The present invention relates to a multi-stage, double-acting hydraulic cylinder with hydraulic arrangement, and with a switching arrangement through which at least one annular space or at least one of the chambers formed between the pistons of the piston rods or between the pistons of the first piston rod and the housing base can be supplied with hydraulic fluid, the corresponding other side of the piston being connected to a storage tank, the annular spaces (18) being fluidly connected to one another by switching bores (24) in the piston rod (16), the switching bores (24) being able to be passed over by the piston of the next piston rod and then a fluidic connection is established between the chamber (32) of the outer piston rod and the annular space (18) of the next inner piston rod, and a check valve (66) is arranged in connection with the storage tank (68), by means of which the backflow of Hydraulic fluid from the hydr Aulik cylinder (10) to the storage tank (66) is lockable.
Figure 00000001
EP99112185A 1998-06-25 1999-06-24 Multiple-stage double-acting hydraulic cylinder with hydraulic circuit, especially for elevating Withdrawn EP0967399A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29811413U DE29811413U1 (en) 1998-06-25 1998-06-25 Multi-stage, double-acting hydraulic cylinder with hydraulic arrangement, especially for lifting work systems
DE29811413U 1998-06-25

Publications (2)

Publication Number Publication Date
EP0967399A2 EP0967399A2 (en) 1999-12-29
EP0967399A3 true EP0967399A3 (en) 2000-04-26

Family

ID=8059061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112185A Withdrawn EP0967399A3 (en) 1998-06-25 1999-06-24 Multiple-stage double-acting hydraulic cylinder with hydraulic circuit, especially for elevating

Country Status (2)

Country Link
EP (1) EP0967399A3 (en)
DE (1) DE29811413U1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010061840B4 (en) 2010-06-14 2020-01-16 Sms Group Gmbh Piston-cylinder unit as a switchable step cylinder
DE102011101019A1 (en) 2011-05-10 2012-11-15 Pacoma Gmbh Multistage hydraulic cylinder for mechanical conversion of linear or rotary movements of hydraulic scissor lift, has hole through which hydraulic oil is supplied after larger piston reaches its end position
CN102434529B (en) * 2011-12-06 2015-03-18 中联重科股份有限公司 Hydraulic cylinder expansion control loop and engineering mechanical equipment
CN102808813A (en) * 2012-08-20 2012-12-05 李文娟 Front hydraulic cylinder of dumper
CN105384091A (en) * 2015-12-31 2016-03-09 徐州重型机械有限公司 Telescopic boom structure with a multilevel independent telescopic cylinder and crane
CN109869372B (en) * 2019-03-20 2024-03-29 江苏恒立液压股份有限公司 Multi-stage oil cylinder
CN111717855A (en) * 2020-05-21 2020-09-29 国网江西省电力有限公司吉安供电分公司 Lifting device for power maintenance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016747A1 (en) * 1979-03-14 1980-10-01 VOEST-ALPINE Aktiengesellschaft Valve-system for controlling the extension of a hydraulic pit-prop
DE3206870A1 (en) * 1982-02-26 1983-09-15 Montan-Hydraulik GmbH, 4755 Holzwickede MULTI-STAGE HYDRAULIC TELESCOPIC CYLINDER WITH END PISTON PRESSURE SUPPLY
DE3339851C1 (en) * 1983-11-04 1985-04-04 Montan-Hydraulik GmbH, 4755 Holzwickede Multi-stage hydraulic telescopic cylinder
US4516468A (en) * 1983-01-10 1985-05-14 Hydraulic Technology Corporation Double acting telescopic cylinder construction
DE29806602U1 (en) * 1998-04-09 1999-05-12 BISON stematec Maschinenbau- und Hubarbeitsbühnen Produktionsgesellschaft mbH, 02708 Löbau Telescopic boom for aerial work platforms

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958718C (en) * 1953-11-11 1957-02-21 Toussaint & Hess Hydr Hebezeug Multi-stage hydraulic telescopic piston with hydraulic retraction
DK121336B (en) * 1969-12-03 1971-10-04 Islef & Hagen As Working cylinder with position sensor.
DE2657831C3 (en) * 1976-12-21 1980-02-21 Algi Alfred Giehl Kg Maschinen- U. Hydraulikbau, 6228 Eltville Hydraulic telescopic piston drive for lifting devices
US4726281A (en) * 1986-06-13 1988-02-23 Quinto De Filippi Hydraulic cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016747A1 (en) * 1979-03-14 1980-10-01 VOEST-ALPINE Aktiengesellschaft Valve-system for controlling the extension of a hydraulic pit-prop
DE3206870A1 (en) * 1982-02-26 1983-09-15 Montan-Hydraulik GmbH, 4755 Holzwickede MULTI-STAGE HYDRAULIC TELESCOPIC CYLINDER WITH END PISTON PRESSURE SUPPLY
US4516468A (en) * 1983-01-10 1985-05-14 Hydraulic Technology Corporation Double acting telescopic cylinder construction
DE3339851C1 (en) * 1983-11-04 1985-04-04 Montan-Hydraulik GmbH, 4755 Holzwickede Multi-stage hydraulic telescopic cylinder
DE29806602U1 (en) * 1998-04-09 1999-05-12 BISON stematec Maschinenbau- und Hubarbeitsbühnen Produktionsgesellschaft mbH, 02708 Löbau Telescopic boom for aerial work platforms

Also Published As

Publication number Publication date
DE29811413U1 (en) 1999-08-26
EP0967399A2 (en) 1999-12-29

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