SE9502099L - Extendable arm, especially for taps - Google Patents

Extendable arm, especially for taps

Info

Publication number
SE9502099L
SE9502099L SE9502099A SE9502099A SE9502099L SE 9502099 L SE9502099 L SE 9502099L SE 9502099 A SE9502099 A SE 9502099A SE 9502099 A SE9502099 A SE 9502099A SE 9502099 L SE9502099 L SE 9502099L
Authority
SE
Sweden
Prior art keywords
cylinder
piston
piston rod
transmission element
locking device
Prior art date
Application number
SE9502099A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9502099D0 (en
SE504463C2 (en
Inventor
Lars Andersson
Original Assignee
Hiab Ab
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 Hiab Ab filed Critical Hiab Ab
Priority to SE9502099A priority Critical patent/SE504463C2/en
Publication of SE9502099D0 publication Critical patent/SE9502099D0/en
Priority to AU57095/96A priority patent/AU5709596A/en
Priority to AT96915286T priority patent/ATE200266T1/en
Priority to EP96915286A priority patent/EP0835220B1/en
Priority to PCT/SE1996/000606 priority patent/WO1996041764A1/en
Priority to DE69612380T priority patent/DE69612380T2/en
Publication of SE9502099L publication Critical patent/SE9502099L/en
Publication of SE504463C2 publication Critical patent/SE504463C2/en

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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • F15B11/205—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members the position of the actuator controlling the fluid flow to the subsequent actuator
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Jib Cranes (AREA)

Abstract

A double-acting hydraulic unit (1) for telescopic booms comprises a cylinder (2) and a hollow piston rod (4) with a piston (3) that divides the cylinder into a piston side chamber (5) and a piston rod chamber (7). Two main conduits (10, 11) lead to the cylinder and two main conduits (10', 11') lead away from the piston rod to a co-operating hydraulic unit. Within the piston rod (4), there is a displaceable transmission element (16) that is arranged to actuate a locking device which in an active state engages into a seat (19) in a gable portion (8) to the cylinder (2). When the transmission element (16) is in an inner end position, the locking device (17) is inactive, whereby the piston (3) is freely movable relative to the cylinder. When the piston (3) reaches an outer end position at the same time as the actuation of the transmission element (16) by a carrier of an adjacent hydraulic unit terminates, then the transmission element is displaced axially, a wedge body (21) actuating the locking device (17) so that it engages into the seat (19). In this way the piston rod is locked mechanically and automatically in its outer end position.
SE9502099A 1995-06-08 1995-06-08 Extendable arm, especially for taps SE504463C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9502099A SE504463C2 (en) 1995-06-08 1995-06-08 Extendable arm, especially for taps
AU57095/96A AU5709596A (en) 1995-06-08 1996-05-09 Extendible boom, particularly for cranes
AT96915286T ATE200266T1 (en) 1995-06-08 1996-05-09 EXTENDABLE BOOM, ESPECIALLY FOR CRANES
EP96915286A EP0835220B1 (en) 1995-06-08 1996-05-09 Extendible boom, particularly for cranes
PCT/SE1996/000606 WO1996041764A1 (en) 1995-06-08 1996-05-09 Extendible boom, particularly for cranes
DE69612380T DE69612380T2 (en) 1995-06-08 1996-05-09 EXTENDABLE EXTENSION, IN PARTICULAR FOR CRANES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9502099A SE504463C2 (en) 1995-06-08 1995-06-08 Extendable arm, especially for taps

Publications (3)

Publication Number Publication Date
SE9502099D0 SE9502099D0 (en) 1995-06-08
SE9502099L true SE9502099L (en) 1996-12-09
SE504463C2 SE504463C2 (en) 1997-02-17

Family

ID=20398559

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9502099A SE504463C2 (en) 1995-06-08 1995-06-08 Extendable arm, especially for taps

Country Status (6)

Country Link
EP (1) EP0835220B1 (en)
AT (1) ATE200266T1 (en)
AU (1) AU5709596A (en)
DE (1) DE69612380T2 (en)
SE (1) SE504463C2 (en)
WO (1) WO1996041764A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2194560B1 (en) 2000-07-11 2005-03-01 Partek Cargotec, S.A. HYDRAULIC CYLINDER FOR TELESCOPIC ARMS.
ITTO20010586A1 (en) * 2001-06-18 2002-12-18 Fassi Gru Idrauliche S P A PERFECTED DEVICE FOR DISPLACEMENT AND SEQUENTIAL RETURN OF SECTIONS OF TELESCOPIC ARMS OF HYDRAULIC CRANES.
ATE393755T1 (en) 2005-04-01 2008-05-15 Cargotec Patenter Ab MULTI-LEVEL TELESCOPIC BOOM.
AT12645U1 (en) * 2011-03-10 2012-09-15 Palfinger Ag CRANE BOOM
DE102013012528B4 (en) * 2013-07-27 2015-09-24 Hydrosaar Gmbh Pressure supply device
CZ2015775A3 (en) * 2015-11-03 2017-05-10 ENTRACON s.r.o. Telescopic hydraulic lines
DE102017009183A1 (en) * 2017-09-30 2019-04-04 Walter Biedenbach crane
CN109973463B (en) * 2019-04-22 2021-03-02 韶关市起重机厂有限责任公司 Oil cylinder capable of reliably and sequentially stretching, multi-oil-cylinder sequential stretching mechanism and engineering machinery

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770138A (en) * 1971-04-15 1973-11-06 Fmc Corp Sequenced crane boom
US4433515A (en) * 1981-11-04 1984-02-28 Kidde, Inc. Remotely operable latch and locking pin for a multi-section boom including a manual fly section
AT398304B (en) * 1991-11-11 1994-11-25 Palfinger Ag MULTI-STAGE TELESCOPIC BOOM

Also Published As

Publication number Publication date
EP0835220A1 (en) 1998-04-15
WO1996041764A1 (en) 1996-12-27
ATE200266T1 (en) 2001-04-15
SE9502099D0 (en) 1995-06-08
DE69612380T2 (en) 2001-09-13
DE69612380D1 (en) 2001-05-10
EP0835220B1 (en) 2001-04-04
SE504463C2 (en) 1997-02-17
AU5709596A (en) 1997-01-09

Similar Documents

Publication Publication Date Title
WO1992019837A3 (en) Earth borer
SE9502099D0 (en) Extendable arm, especially for taps
MXPA99003183A (en) Telescoping system with multi-stage telescopic cylinder.
EP0798421A3 (en) Crusher
ES2178880T3 (en) ROLLER CONTROL UNIT FOR A CONTINUOUSLY VARIABLE RELATIONSHIP TRANSMISSION.
IT1247263B (en) HIGH-SPEED PNEUMO-HYDRAULIC PRESS HEAD.
DK1151196T3 (en) Reciprocating hydraulic differential machine, especially hydraulic differential motor
FR2697879B1 (en) Hydraulic clutch slave cylinder, the piston of which has a telescopically extendable part.
IT1247264B (en) PNEUMO-HYDRAULIC PRESS WITH CONTROLLED STROKE
DE59805885D1 (en) setting device
WO1999020559A3 (en) Hydraulic oil feed plunger cylinder
AU4594293A (en) Outer-boom crane
CA2025843A1 (en) Extensible boom mechanism for use with mobile cable salvage apparatus
DE58901623D1 (en) MULTI-STAGE HYDRAULIC TELESCOPIC CYLINDER WITH A FORCE CONTROL FOR THE EXTENSION AND RETURN SEQUENCE OF THE TELES COUPLERS.
EP0316399A1 (en) A device in telescopic arms.
CA2434391A1 (en) Device for switching and locking moving points components
EP0581270A3 (en)
EP0858938A3 (en) Device for moving and locking in end positions of relatively movable elements
RU92009042A (en) DEVICE FOR THE SUPPLY OF MOBILE ENVIRONMENT TO THE EXECUTIVE MECHANISM
DE50306448D1 (en) Push / push buffer for towing devices on rail and wheeled vehicles
ATE151152T1 (en) HYDRAULIC DOUBLE-ACTING WORKING CYLINDER WITH SELF-LOCKING
ATE266599T1 (en) ARRANGEMENT IN A LIFTING DEVICE
SU729386A1 (en) Positional servo drive
CA2189608A1 (en) Pressure switch with increased deadband
SE9603768L (en) Pneumatic cylinder assembly

Legal Events

Date Code Title Description
NUG Patent has lapsed
NUG Patent has lapsed