EP2683645B1 - Ladekran-ausleger - Google Patents

Ladekran-ausleger Download PDF

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Publication number
EP2683645B1
EP2683645B1 EP12712877.5A EP12712877A EP2683645B1 EP 2683645 B1 EP2683645 B1 EP 2683645B1 EP 12712877 A EP12712877 A EP 12712877A EP 2683645 B1 EP2683645 B1 EP 2683645B1
Authority
EP
European Patent Office
Prior art keywords
jib
cylinder
extension
piston rod
retraction
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.)
Active
Application number
EP12712877.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2683645A1 (de
Inventor
Eckhard Wimmer
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.)
Palfinger AG
Original Assignee
Palfinger 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 Palfinger AG filed Critical Palfinger AG
Priority to PL12712877T priority Critical patent/PL2683645T3/pl
Publication of EP2683645A1 publication Critical patent/EP2683645A1/de
Application granted granted Critical
Publication of EP2683645B1 publication Critical patent/EP2683645B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • 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
    • B66C23/54—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • 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
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/07—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
    • 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

Definitions

  • the invention relates to a loading crane with a hydraulically actuated boom according to one of claims 1 to 13 and further relates to a vehicle with such a loading crane.
  • Hydraulically operable booms for loading cranes are already known in a variety of the prior art. So shows about the EP 0 566 720 B1 of 10 November 1992 a multi-stage telescopic boom, in particular for a loading crane on a truck, between each successive, telescopic nested arms each having a piston and cylinder hydraulic unit is arranged, wherein at least the cylinder of the innermost arm from the cylinder bottom axially into the tube Cylinder space is, which at least partially retracted piston against this sealed into the hollow piston rod, and thus seals the cylinder chamber relative to the interior of the hollow piston rod, the interior of each hollow piston rod via a preferably rigid line with the cylinder chamber of the next inner
  • Hydraulic unit is connected and that the interior of each hollow piston rod communicates with fully extended piston with the cylinder chamber of the same hydraulic unit.
  • the object of the invention is to provide an improved hydraulically actuated boom for a loading crane.
  • This run-in line makes it possible to supply oil to the outer side - that is to say, that which is furthest away from the crane column - which has not yet been fully retracted, until it has completely retracted.
  • the oil flows via the control valve into the inner thrust cylinder and causes it to retract.
  • the outer boom extension is that of lesser diameter
  • the inner boom extension is that of larger diameter, which of course could also be reversed, based on the outer and inner boom extension and / or the smaller and larger diameter.
  • the retraction line passes through at least the thrust piece cylinder of the inner boom extension without causing the working fluid in the retraction line communicates during traversal with this Schub consortiumzylinder.
  • the entry line is formed telescopically inside the thrust cylinder of the inner boom extension.
  • the length of the entry line can be adapted to the effective length of the thrust piece cylinder, that is to say that the telescopically formed entry line can move together with the thrust piece cylinder.
  • the entry line comprises at least two nested tubes which are telescopically movable relative to each other.
  • a telescopic design is particularly preferably produced by two nested tubes.
  • the thrust cylinder of the inner boom extension has at least one cylinder, at least one piston and at least one piston rod, wherein one of the two tubes is stationary in the cylinder of the thrust cylinder and the second tube is formed stationary in the piston rod of the thrust cylinder.
  • the stationary design of the two tubes in the thrust piece cylinder can ensure that both tubes move uniformly together with the thrust piece cylinder.
  • the outer of the two tubes has a recess in a lateral surface of the tube, wherein the recess is formed at an end region of the tube.
  • the piston has at least one extension channel, wherein the extension channel extends from a cylinder chamber into a piston rod chamber. Via an extension channel in the piston, the working medium can flow from the cylinder chamber into the piston rod chamber.
  • the piston has at least one entry channel, wherein the entry channel extends from the cylinder chamber into the piston rod chamber, wherein in the retraction a check valve is formed.
  • the piston rod has at least one piston rod channel, wherein the piston rod channel extends from one end region of the piston rod to the other end region of the piston rod, wherein the switching valve is arranged on the one end region and on another end region surrounding the piston rod chamber is formed, wherein the piston rod surrounding chamber is formed in the cylinder of the pusher cylinder.
  • At least one check valve is formed on the piston rod channel.
  • the working medium which is located in the piston rod chamber can escape from this when extending the thrust piece cylinder and - flow through the check valve - by traversing the piston rod channel.
  • the switching valve is designed as a directional control valve - preferably as a 2/2 way valve - is formed.
  • the switching valve is formed mechanically actuated. This can contribute to a cost-effective variant of a switching valve.
  • the boom at least one - preferably at least two - further inner boom extension (s) with thrust cylinder (s), wherein the working fluid of the Einfahrtechnisch between the tank and the mouth of the thrust cylinder of the outermost boom extension in any position of the thrust cylinder of the inner Boom extensions with the jib cylinders of the inner jib extensions communicate as long as the outermost jib extension has not reached its retracted position.
  • the use of multiple inner boom extensions and associated thrust cylinder can help increase the reach of the boom.
  • the invention further relates to a loading crane with a hydraulically actuated boom according to one of claims 1 to 14. Especially in loading cranes, such a hydraulically actuated boom can be advantageously used.
  • FIG. 1 shows a loading crane 101 with a crane column 102, a first boom 103 and a second boom 100.
  • the hydraulically actuated boom 100 has a plurality of boom extensions 1, 2, 3 and 4.
  • the boom extensions 1, 2, 3 and 4 are each retracted and retracted with associated thrust cylinder 11, 21, 31 and 41 respectively.
  • the loading crane 101 has in this preferred embodiment, a further third boom 104, which also has telescopically formed and hydraulically actuated boom extensions.
  • such loading cranes 101 are mounted on vehicles. However, they are also used stationary.
  • FIG. 2 shows a schematic representation of two thrust cylinder 21 and 11 for two outer 1 and inner boom extensions not shown 2.
  • the thrust cylinder 11 is disposed on the outer boom extension 1 and the thrust cylinder 21 on the inner boom extension 2.
  • both pusher cylinders 11 and 21 are fully retracted.
  • the extension line 7 or the working medium 5 located therein (not shown) is pressurized.
  • the pressurization spreads the working fluid 5 in the cylinder 26 and its cylinder chamber 261 and thereby displaces the piston 27 and thus the piston rod 28, the piston rod 28 moves out.
  • the working medium 5 could until now spread only in the cylinder chamber 261, whereby only the pusher cylinder 21 extends and not the pusher cylinder 11th
  • the piston rod 28 has at least one piston rod channel 282, wherein the piston rod channel 282 extends from one end portion of the piston rod 28 to the other end portion of the piston rod 28, wherein at one end portion of the switching valve 22 is disposed and at the other end a Piston rod 28 surrounding chamber 262 is formed, wherein the piston rod 28 surrounding chamber 262 is formed in the cylinder 26 of the pusher cylinder 21.
  • the working medium 5 (not shown), which is located in the chamber 262 surrounding the piston rod 28, must escape.
  • the working medium 5 can flow away from the piston rod 28 surrounding chamber 262 via the piston rod channel 282 and the check valve 283 from the thrust cylinder 21. Subsequently, the working medium 5 via the two telescopically formed tubes 23 and 24 flow back into a tank, not shown.
  • the telescopically formed tubes 23 and 24 are formed in the interior of the thrust cylinder 21, whereby a very compact thrust cylinder 21 is achieved.
  • the piston rod 28 After the piston rod 28 is substantially fully extended, there is an opening between the cylinder chamber 261 and the piston rod chamber 281. These two chambers 261 and 281 are interconnected via the extension channel 271, which is now open.
  • the opening of the Ausfahrkanals 271 was made possible by a recess 29 which is located in the lateral surface of the tube 23, said recess 29 is formed at an end portion of the tube 23. With this preferred embodiment, the recess 29 is formed as an opening in the shell of the tube 23.
  • Through the recess 29 and the exit channel 271 can now work medium 5 from the cylinder chamber 261 in the piston rod chamber 281 and flow from there via the extension line 7 to the cylinder chamber 161 of the cylinder 16 of the Schub consortiumzylinders 11.
  • the pressurized working fluid 5 now spreads in the cylinder chamber 161 of the thrust cylinder 11, whereby the piston 17 and the piston rod 18 extend.
  • the working medium 5 (not shown) in the retraction line 6 starts directly at the junction 12 of the thrust piece cylinder 11 of the outer boom extension 1, not shown.
  • the run-in line 6 extends transversely through the pusher cylinder 21 by two telescopically formed tubes 23 and 24.
  • the two tubes 23 and 24 are connected via a seal 25, whereby no working fluid from the two tubes 23 and 24 to the tubes 23 and 24 surrounding chambers 261 and 281 of the pusher cylinder 21 can escape.
  • the working medium 5 spreads in the piston rod 18 surrounding chamber 162, whereby the piston rod 18 and the piston 17 retract (shown situation in the FIG. 3 ).
  • the switching valve 22 is preferably mechanically actuated by a lever 51 on the thrust cylinder 21, whereby the inflow to the piston rod channel 282 for the working fluid 5 of the retraction line 6 is released.
  • the opening of the switching valve could be done in any other way, such as electrically.
  • the two tubes 23 and 24 are telescopically formed; they drive simultaneously with the piston 27 and the piston rod 28 (and also during the extension process).
  • the non-pressurized working fluid 5 in the cylinder chamber 261 is pushed out of the cylinder 26 during this retraction movement and can flow away via the extension conduit 7.
  • thrust cylinder 21 of this type are connected in series (see FIG. 4 ) so that the effluent working fluid 5 in the extension line 7 each flow through the successively connected thrust cylinder 21 through the piston rod chamber 281, then through the exit channel 271 and then through the recess 29 of the tube 23 and through the cylinder chamber 261.
  • both a sequential extension of the thrust cylinder 21 and 11 and a sequential retraction of the thrust cylinder 11 and 21 can be achieved.
  • the pusher cylinder 21 can retract only when the pusher cylinder 11 is substantially completely retracted and then the control valve 22 of the pusher cylinder 21 turns on, whereby only the pusher cylinder 21 can retract.
  • FIG. 4 shows a schematic representation of a hydraulically actuated boom 100 (see FIG. 1 ) for a loading crane 101 (see FIG. 1 ).
  • the hydraulically actuatable boom 100 has four boom extensions 1, 2, 3 and 4 (see FIG. 1 ), wherein a boom extension is formed as the outermost boom extension 1 and the three other three boom extensions 2, 3 and 4 are designed as inner boom extensions 2, 3 and 4.
  • the boom extensions 1, 2, 3 and 4 each have at least one thrust cylinder 11, 21, 31 and 41, with which the boom extensions 1, 2, 3 and 4 can be extended or retracted.
  • the hydraulically actuated boom 100 in this case has a hydraulic circuit for a working fluid 5 - in this preferred embodiment oil - with a retraction line 6 for pressurized retraction of the thrust cylinder 11, 21, 31 and 41, wherein the retraction line 6 in the thrust cylinder 11 of the outermost boom extension 1 opens.
  • the boom 100 further has an extension line 7 for the pressurized extension of the thrust cylinder 11, 21, 31 and 41.
  • the pusher cylinders 21, 31 and 41 each have one Switching valve 22, 32 and 42, which by reaching a defined retraction position of the next outer boom extension or its thrust cylinder 11, 21 and 31 - in particular when the outer boom extension 1,2 and 3 or their Schub Federationzylinder 11, 21 and 31 substantially are fully retracted - are switchable in the open position and thereby the next inner thrust cylinder 21, 31 and 41 of the inner boom extension 2, 3 and 4 can feed with pressurized working medium 5.
  • the working medium 5 communicates the Einfahrtechnisch 6 between a tank, not shown, and the junction 12 on the thrust cylinder 11 of the outermost boom extension 1 in any position of the thrust cylinder 21, 31 and 41 of the inner boom extensions 2, 3 and 4 with the thrust cylinder 21, 31 and 41st the inner boom extensions 2, 3 and 4 as long as the outermost boom extension 1 and the pusher cylinder 11 has not reached his / her entry position.
  • the entry line 6 traverses all three thrust cylinder, 21, 31 and 41 of the inner boom extensions 2, 3 and 4 without causing the working fluid 5 in the entrance line 6 - during the crossing - with the thrust cylinder 21, 31 and 41 communicates.
  • the entry line 6 is telescopically formed in the interior of the thrust cylinder 21, 31, 41 by two nested tubes 23 and 24 or 33 and 34 or 43 and 44 are formed, which are telescopically movable relative to each other.
  • the tube 23, 33 and 43 fixed in the cylinder of the associated thrust cylinder 21, 31 and 41 is formed and the second tube 24, 34 and 44 is stationary in the associated piston rod of the associated thrust cylinder 21, 31 and 41st educated.
  • each of the outer tube 23, 33 and 43 has a recess 29, 39 and 49 in the lateral surface of the associated tube, said recesses 29. 39 and 49 at an end portion of the tube 23, 33 and 43 are formed.
  • the switching valve 22, 32 and 42 is formed in this preferred embodiment as a 2/2 way valve and is operated mechanically via the levers 51, 52 and 53, respectively.
  • Both the extension and the retraction are sequential, that is, that only one thrust cylinder 11, 21, 31 or 41 off or. retracts.
  • the working medium 5 is always released only after essentially complete extension or retraction for the next outer thrust piece cylinder 31, 21 and 11 or for the next inside thrust piece cylinder 21, 31 and 41.
  • FIG. 5 shows a detailed view of a section through a pusher cylinder 21 in a position as in FIG. 3 shown when this is substantially fully extended.
  • the two telescopically formed tubes 23 and 24 In the interior of the thrust cylinder 21 extend the two telescopically formed tubes 23 and 24. In this case, these two tubes 23 and 24 extend transversely through the cylinder 26, the piston 27 and the piston rod 28.
  • This arranged in the thrust cylinder 21, telescopic line 6 - consisting of the two tubes 23 and 24 - makes it possible that required for retraction oil 5 through the thrust cylinder 21 (and 31 and 41 as in FIG. 4 shown) to lead forward to the thrust cylinder 11, wherein in this preferred embodiment, the rear, connected to the cylinder 26 larger tube 23 is connected and the smaller tube 24 is connected to the piston rod 28, wherein the smaller tube 24 into the larger tube 23 protrudes and is tightly guided in this.
  • This line 6 makes it possible, the foremost not yet retracted thrust cylinder 11 (see FIG. 3 ) to supply oil on the driving side until it has retracted completely.
  • the control valve 22 (see FIG. 3 ) is actuated (opened) to the nearest pusher cylinder 21 located behind. Then this thrust cylinder 21 can retract. This process will be consecutive performed until all thrust cylinder (21, 31, 41 see FIG. 4 ) are completely retracted.
  • control order is determined at any time by blocking the return oil flow, but always by controlled oil supply.
  • the return oil flow is always free both when entering and during extension.
  • the larger rear tube 23 is tightly guided in the piston 27 and has at the front end to the seal or guide an extension with radially arranged openings 29, the flow of the piston-side oil through the piston 27 and the piston rod 28 forward in the extended state release
  • the piston 27 has a check valve (273, see FIG. 3 ), which optionally opens at slightly retracted piston 27 when pressurized by the return oil flow from the rod side and releases the flow to the rear.
  • FIG. 6 shows a vehicle 200 with a loading crane 101 mounted thereon with a hydraulically actuatable boom 100 with boom extensions.

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  • 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)
  • Jib Cranes (AREA)
  • Actuator (AREA)
EP12712877.5A 2011-03-10 2012-03-09 Ladekran-ausleger Active EP2683645B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12712877T PL2683645T3 (pl) 2011-03-10 2012-03-09 Wysięgnik żurawia załadunkowo-wyładowczego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM133/2011U AT12645U1 (de) 2011-03-10 2011-03-10 Ladekran-ausleger
PCT/AT2012/000056 WO2012119169A1 (de) 2011-03-10 2012-03-09 Ladekran-ausleger

Publications (2)

Publication Number Publication Date
EP2683645A1 EP2683645A1 (de) 2014-01-15
EP2683645B1 true EP2683645B1 (de) 2014-06-04

Family

ID=46797312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12712877.5A Active EP2683645B1 (de) 2011-03-10 2012-03-09 Ladekran-ausleger

Country Status (11)

Country Link
US (1) US9718655B2 (zh)
EP (1) EP2683645B1 (zh)
CN (1) CN103429522B (zh)
AT (1) AT12645U1 (zh)
AU (1) AU2012225180B2 (zh)
BR (1) BR112013022490A2 (zh)
DK (1) DK2683645T3 (zh)
ES (1) ES2498951T3 (zh)
PL (1) PL2683645T3 (zh)
RU (1) RU2610898C2 (zh)
WO (1) WO2012119169A1 (zh)

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EP3222392A4 (en) * 2014-11-21 2018-05-30 Proytecsa Security. S.L. Robotic telescopic articulated arm
EP3532424B1 (en) * 2016-10-25 2021-12-15 Tajfun Liv, Proizvodnja In Razvoj, d.o.o. Foldable crane
EP4389678A1 (en) * 2022-12-21 2024-06-26 Hiab AB Hydraulic cylinder assembly, and a crane comprising such assembly

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GB201321999D0 (en) * 2013-12-12 2014-01-29 Fella Werke Gmbh Hydraulic system for automatic sequential cylinder operation
CN103899585B (zh) * 2014-03-03 2016-08-24 徐州徐工随车起重机有限公司 一种双油缸顺序伸缩的液压控制***、吊臂机构及起重机
CN106536398B (zh) * 2014-06-17 2019-07-12 株式会社多田野 伸缩臂的伸缩装置
CN105605022B (zh) * 2016-03-14 2018-06-12 三一帕尔菲格特种车辆装备有限公司 一种多油缸顺序伸缩机构及工程机械
CN105864134A (zh) * 2016-04-22 2016-08-17 三帕尔菲格特种车辆装备有限公司 多油缸顺序伸缩***及起重机
CN106395697B (zh) * 2016-08-24 2019-10-01 浙江鼎力机械股份有限公司 伸缩连接组件及高空作业平台
EP3318530B1 (en) * 2016-11-03 2020-04-01 National Oilwell Varco Norway AS Method of upgrading a knuckle-boom crane and a heave-compensating crane
CN106593993B (zh) * 2016-12-26 2018-04-20 山河智能装备股份有限公司 一种双缸顺序伸缩油缸
DE102018117630B4 (de) * 2018-07-20 2020-07-09 Manitowoc Crane Group France Sas Kranteleskop-Verriegelungsvorrichtung
CN111153333B (zh) * 2020-01-22 2024-07-05 徐工消防安全装备有限公司 一种伸缩式工作臂、伸缩作业装置及举高消防车
RU205844U1 (ru) * 2021-04-28 2021-08-11 Открытое акционерное общество "Машиностроительный завод "АРСЕНАЛ" Гидравлически управляемая телескопическая стрела судового крана

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EP3222392A4 (en) * 2014-11-21 2018-05-30 Proytecsa Security. S.L. Robotic telescopic articulated arm
EP3532424B1 (en) * 2016-10-25 2021-12-15 Tajfun Liv, Proizvodnja In Razvoj, d.o.o. Foldable crane
EP4389678A1 (en) * 2022-12-21 2024-06-26 Hiab AB Hydraulic cylinder assembly, and a crane comprising such assembly

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EP2683645A1 (de) 2014-01-15
CN103429522A (zh) 2013-12-04
PL2683645T3 (pl) 2014-11-28
DK2683645T3 (da) 2014-09-15
AT12645U1 (de) 2012-09-15
CN103429522B (zh) 2015-10-21
WO2012119169A1 (de) 2012-09-13
ES2498951T3 (es) 2014-09-26
RU2013145351A (ru) 2015-04-20
US9718655B2 (en) 2017-08-01
AU2012225180B2 (en) 2017-05-18
US20140001140A1 (en) 2014-01-02
BR112013022490A2 (pt) 2016-12-06
RU2610898C2 (ru) 2017-02-17
AU2012225180A1 (en) 2013-09-12

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