EP2712836B1 - Ausziehbarer Kran und ausziehbare Auslegeranordnung eines ausziehbaren Krans - Google Patents

Ausziehbarer Kran und ausziehbare Auslegeranordnung eines ausziehbaren Krans Download PDF

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Publication number
EP2712836B1
EP2712836B1 EP12186518.2A EP12186518A EP2712836B1 EP 2712836 B1 EP2712836 B1 EP 2712836B1 EP 12186518 A EP12186518 A EP 12186518A EP 2712836 B1 EP2712836 B1 EP 2712836B1
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EP
European Patent Office
Prior art keywords
telescopic
arm
telescopic boom
boom arrangement
crane
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.)
Not-in-force
Application number
EP12186518.2A
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English (en)
French (fr)
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EP2712836A1 (de
Inventor
Rami Salmi
Tuomo Ylikoski
Aimo Sainio
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Mesera Cranes Finland Oy
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Mesera Cranes Finland Oy
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Filing date
Publication date
Application filed by Mesera Cranes Finland Oy filed Critical Mesera Cranes Finland Oy
Priority to EP12186518.2A priority Critical patent/EP2712836B1/de
Priority to ES12186518.2T priority patent/ES2542244T3/es
Publication of EP2712836A1 publication Critical patent/EP2712836A1/de
Application granted granted Critical
Publication of EP2712836B1 publication Critical patent/EP2712836B1/de
Not-in-force 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
    • B66C13/00—Other constructional features or details
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • 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

Definitions

  • the present invention relates to the field of lifting equipment and cranes used for lifting and loading within the transportation industry, energy industry, process industry and manufacturing industry, and more particularly to a telescopic crane and a telescopic boom arrangement of a telescopic crane.
  • a crane is generally defined as a machine for lifting and moving heavy objects by means of ropes or cables suspended from a movable arm.
  • One of the most common crane types is a telescopic crane.
  • Telescopic cranes are special type of jib cranes having a telescopic jib or boom.
  • Telescopic cranes are also often referred to as loader cranes, articulating cranes or knuckle-boom cranes.
  • a telescopic crane has typically a hydraulically-powered articulated arm having one or more of the arm sections telescopic.
  • Telescopic cranes are used in industry for different applications these including handling of bulk material, such as coal, mineral, scrap metal and other material within the process and manufacturing industry as well as within the energy industry. Telescopic cranes are also typically used within the transportation industry as loading and unloading material these including loading and unloading of timber, bulk material, scrap metal and other material.
  • the telescopic crane may also be a mobile crane or a truck-mounted crane.
  • a truck-mounted telescopic crane is often a crane in which the numerous telescopic arm sections may be folded into a small space when the crane is not in use.
  • Within forestry telescopic cranes are used in e.g. timber trucks for loading and unloading of timber.
  • Some of the typical telescopic cranes according to the prior art are designed to have the hydraulic hoses and pipes fitted inside the articulated arm and the telescopic end-side inner arm portion of the telescopic crane.
  • Two typical examples of this type of telescopic cranes according to the prior art may be seen in US Patent documents US 5,924,837 and US 6,530,742 B2 .
  • the hoses and pipes may be somewhat safe from external objects these types of hoses are difficult to maintain or adjust.
  • European Patent documents EP 1842823 B1 and EP 2135836 B1 show a telescopic crane according to the prior art where in the connections for the hydraulic hoses are fitted to a special mounting block arranged in the end region of the articulated arm and in the interior of the crane arm pipe conduits lead to connections fitted to said mounting block.
  • Japanese patent document JP2008024419 A discloses a telescopic crane with a telescopic boom arrangement according to the preamble portions of both independent claims 1 and 14.
  • the prior art telescopic cranes, where both the hydraulic pipe conduits and the hydraulic hoses are fitted inside the telescopic crane structure have some problems.
  • An object of the present invention is thus to provide a method and an apparatus for implementing the method so as to overcome the above problems and to alleviate the above disadvantages.
  • a telescopic boom arrangement of a telescopic crane said telescopic boom arrangement comprising an articulated arm; at least one extendable arm; hydraulic pipe conduits arranged on top of said articulated arm; and a sliding bearing arrangement arranged at the end region of said articulated arm; which said telescopic boom arrangement further comprises an opening for said hydraulic pipe conduits on the upper face of said articulated arm, which opening is located on the side of said articulated arm so that said hydraulic pipe conduits are at a distance from said sliding bearing arrangement so that said hydraulic pipe conduits lead to hose connections accessible through said opening.
  • said opening is at least partially covered with a removable cover arranged at the arm region of said articulated arm.
  • said at least one extendable arm comprises an extendable crane-side outer arm and a further extendable end-side inner arm.
  • the telescopic boom arrangement further comprises a cover, so that said hydraulic pipe conduits are at least partially covered with said cover.
  • the sliding bearing arrangement comprises a sliding bearing housing and a sliding bearing.
  • the sliding bearing has a sliding surface made of any kind of suitable sliding bearing material, such as e.g. bearing plastic or composite material or copper-plated steel with a sintered porous tin bronze layer with a polytetrafluoroethylene cover filling or copper-plated steel with a sintered tin bronze layer with a polyoxymethylene cover layer.
  • said distance between said hydraulic pipe conduits and said sliding bearing arrangement is 1-100 centimetres.
  • said distance between said hydraulic pipe conduits and said sliding bearing arrangement is 5-25 centimetres.
  • said hose connections for the hydraulic pipe conduits comprise adjustable connectors.
  • the telescopic boom arrangement comprises hydraulic hose conduits leading from said hose connections to hose connections arranged at the end-side inner arm.
  • the telescopic boom arrangement comprises a chain extending from the articulated arm over a chain wheel arranged at the crane-side outer arm to the end-side inner arm. More preferably, the said chain is connected to a chain tensioner arranged at the end region of the articulated arm.
  • the telescopic boom arrangement comprises two or more cylinders for moving the at least one extendable arm.
  • a telescopic crane having a telescopic boom arrangement comprising an articulated arm; at least one extendable arm; hydraulic pipe conduits arranged on top of said articulated arm; and a sliding bearing arrangement arranged at the end region of said articulated arm; in which telescopic crane said telescopic boom arrangement further comprises an opening for said hydraulic pipe conduits on the upper face of said articulated arm, which opening is located on the side of said articulated arm so that said hydraulic pipe conduits are at a distance from said sliding bearing arrangement so that said hydraulic pipe conduits lead to hose connections accessible through said opening.
  • said opening is at least partially covered with a removable cover arranged at the arm region of said articulated arm.
  • said at least one extendable arm comprises an extendable crane-side outer arm and a further extendable end-side inner arm.
  • the telescopic boom arrangement further comprises a cover, so that said hydraulic pipe conduits are at least partially covered with said cover.
  • said hose connections for the hydraulic pipe conduits comprise adjustable connectors.
  • the telescopic boom arrangement comprises hydraulic hose conduits leading from said hose connections to hose connections arranged at the end-side inner arm.
  • the telescopic boom arrangement comprises a chain extending from the articulated arm over a chain wheel arranged at the crane-side outer arm to the end-side inner arm. More preferably in the telescopic crane, said chain is connected to a chain tensioner arranged at the end region of the articulated arm.
  • the telescopic boom arrangement comprises two or more cylinders for moving the at least one extendable arm.
  • FIG. 1 shows one embodiment of a telescopic boom arrangement of a telescopic crane according to the present invention.
  • the telescopic boom arrangement of a telescopic crane according to the present invention comprises an articulated arm 1, an extendable crane-side outer arm 2 and a further extendable end-side inner arm 3.
  • the telescopic boom arrangement of a telescopic crane further comprises hydraulic pipe conduits 4, 5, which hydraulic pipe conduits 4, 5 are arranged on top of the articulated arm 1 of the telescopic crane.
  • the hydraulic pipe conduits 4, 5 are at least partially covered with a cover 6.
  • the telescopic boom arrangement of a telescopic crane according to the present invention also comprises a sliding bearing housing 7 and a sliding bearing 8 arranged at the end region of the articulated arm 1 of the telescopic crane.
  • the articulated arm 1 of the telescopic boom arrangement of a telescopic crane according to the present invention has an opening for the hydraulic pipe conduits 4, 5 on the upper face of the articulated arm 1. Said opening is located on the side of the articulated arm 1 so that the hydraulic pipe conduits 4, 5 are at a distance from the sliding bearing housing 7 and a sliding bearing 8 arranged at the end region of the articulated arm 1 of the telescopic crane.
  • the opening for the hydraulic pipe conduits 4, 5 may be at least partially covered with a removable cover 9 arranged at the arm region of the articulated arm 1.
  • FIG. 2 shows a detailed view of one embodiment of a telescopic boom arrangement of a telescopic crane according to the present invention.
  • the telescopic boom arrangement of a telescopic crane according to the present invention comprises an articulated arm 1, an extendable crane-side outer arm 2 and an extendable end-side inner arm 3.
  • the telescopic boom arrangement of a telescopic crane further comprises hydraulic pipe conduits 4, 5 are arranged on top of the articulated arm 1 of the telescopic crane, which hydraulic pipe conduits 4, 5 are at least partially covered with a cover 6.
  • the telescopic boom arrangement of a telescopic crane according to the present invention also comprises a sliding bearing housing 7 and a sliding bearing 8 arranged at the end region of the articulated arm 1 of the telescopic crane.
  • the sliding bearing 8 and the sliding bearing housing 7 are arranged separately at the end region of the articulated arm 1 of the telescopic crane. The sliding bearing 8 can therefore be easily maintained or replaced.
  • the articulated arm 1 of the telescopic boom arrangement of a telescopic crane according to the present invention has an opening for the hydraulic pipe conduits 4, 5 on the upper face of the articulated arm 1.
  • the opening for the hydraulic pipe conduits 4, 5 is located in the arm region towards the crane-side so that the hydraulic pipe conduits 4, 5 are at a distance from the sliding bearing housing 7 of the articulated arm 1 and from the sliding bearing 8 arranged at the end region of the articulated arm 1 of the telescopic crane.
  • said distance between said hydraulic pipe conduits 4, 5 and said sliding bearing arrangement 7, 8 may be 1-100 centimetres, and more typically 5-25 centimetres.
  • the hydraulic pipe conduits 4, 5 lead to hose connections 10, 11 accessible through said opening on the upper face of the articulated arm 1.
  • Said hose connections 10, 11 for the hydraulic pipe conduits 4, 5 may comprise adjustable connectors 12.
  • hydraulic hose conduits lead from said hose connections 10, 11 to hose connections 13-16 arranged at the end-side inner arm 3.
  • the hose connections 13-16 may be arranged straight 13-14 at the end-side inner arm 3 or arranged with an angle connector 15-16 at the end-side inner arm.
  • the opening for the hydraulic pipe conduits 4, 5 may be covered with a removable cover 9 arranged at the arm region of the articulated arm 1.
  • a removable cover 9 When said removable cover 9 is removed the hose connections 10, 11 for the hydraulic pipe conduits 4, 5 are accessible.
  • the hydraulic hose conduits may be easily maintained or replaced by opening the hose connections 10, 11.
  • the hydraulic hose conduits may be easily adjusted or tightened with the help of the adjustable connectors 12 also accessible through the opening on the upper face of the articulated arm 1 when the removable cover 9 is removed.
  • the telescopic boom arrangement of a telescopic crane according to the present invention may also comprise a chain 17 which extends from the articulated arm over a chain wheel 18 arranged at the crane-side outer arm 2 to the end-side inner arm 3, and which chain 17 is connected to a chain tensioner 19 arranged at the end region of the articulated arm 1 of the telescopic crane.
  • the telescopic boom arrangement of a telescopic crane according to the present invention may alternatively comprise two or more cylinders for moving the crane-side outer arm 2 and the end-side inner arm 3.
  • the sliding bearing 8 may have a sliding surface made of any kind of suitable sliding bearing material, such as e.g. bearing plastic or composite material or copper-plated steel with a sintered porous tin bronze layer with a polytetrafluoroethylene cover filling or copper-plated steel with a sintered tin bronze layer with a polyoxymethylene cover layer.
  • suitable sliding bearing material such as e.g. bearing plastic or composite material or copper-plated steel with a sintered porous tin bronze layer with a polytetrafluoroethylene cover filling or copper-plated steel with a sintered tin bronze layer with a polyoxymethylene cover layer.
  • the pipe conduits may be designed to be greater in diameter than in the arrangement according to prior art as they do not need to fit inside the telescopic crane structure.
  • the hose conduits may be designed to be greater in diameter than in the arrangement according to prior art as they fit easier inside the telescopic crane structure.
  • the hose conduits have more space and are not so easily subjected to wear against the moving telescopic boom parts. With greater pipe and hose conduits there is not as much pressure drop caused by the resistance of flow.
  • the manufacturers of telescopic cranes may design the telescopic crane arms narrower wider than with the prior art solutions.
  • Narrower telescopic crane arms save space and ease the transportation.
  • Narrower telescopic crane arms are also convenient in use as they increase the visibility of the user when compared with the prior art solutions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (22)

  1. Eine teleskopische Auslegeranordnung eines teleskopischen Krans, wobei die genannte teleskopische Auslegeranordnung Folgendes aufweist:
    einen Gelenkarm (1);
    mindestens einen ausfahrbaren Arm (2), (3);
    hydraulische Rohrleitungen (4), (5), die oben auf dem Gelenkarm (1) angeordnet sind;
    und eine Gleitlager-Anordnung (7), (8), die im Endbereich des Gelenkarms (1) angeordnet ist, wobei die teleskopische Auslegeranordnung weiter eine Öffnung für die genannten hydraulischen Rohrleitungen (4), (5) in der oberen Seite des Gelenkarms (1) aufweist, dadurch gekennzeichnet, dass
    die genannte Öffnung sich auf der Seite des genannten Gelenkarms (1) befindet, so dass die hydraulischen Rohrleitungen (4), (5) derart in einem Abstand zur genannten Gleitlager-Anordnung (7), (8) stehen, dass die genannten hydraulischen Rohrleitungen (4), (5) zu Schlauchverbindungen (10), (11) führen, die durch die genannte Öffnung zugänglich sind.
  2. Eine teleskopische Auslegeranordnung nach Anspruch 1, dadurch gekennzeichnet, dass
    die genannte Öffnung zumindest teilweise mit einer abnehmbaren Abdeckung (9) abgedeckt ist, die im Armbereich des genannten Gelenkarms (1) angeordnet ist.
  3. Eine teleskopische Auslegeranordnung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass
    der genannte, mindestens eine ausfahrbare Arm (2), (3) einen ausfahrbahrbaren, kranseitigen Außenarm (2) und einen weiter ausfahrbaren, endseitigen Innenarm (3) aufweist.
  4. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung weiter eine Abdeckung (6) aufweist, so dass die genannten hydraulischen Rohrleitungen (4), (5) zumindest teilweise mit der genannten Abdeckung (6) abgedeckt sind.
  5. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass
    die Gleitlager-Anordnung (7), (8) ein Gleitlager-Gehäuse (7) und ein Gleitlager (8) aufweist.
  6. Eine teleskopische Auslegeranordnung nach Anspruch 5, dadurch gekennzeichnet, dass
    das Gleitlager (8) eine Gleitoberflache umfasst, die aus jeglicher Art von tauglichem Gleitlagermaterial, wie beispielsweise Lagerkunststoff, Verbundwerkstoff oder verkupfertem Stahl mit einer porösen Sinterzinnbronzeschicht mit einer Polytetrafluorethylen-Deckfüllung, oder
    verkupfertem Stahl mit einer porösen Sinterzinnbronzeschicht mit einer Polyoxymethylen-Deckschicht hergestellt ist.
  7. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass
    der genannte Abstand zwischen den genannten hydraulischen Rohrleitungen (4), (5) und der genannten Gleitlager-Anordnung (7), (8) 1-100 Zentimeter beträgt.
  8. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass
    der genannte Abstand zwischen den genannten hydraulischen Rohrleitungen (4), (5) und der genannten Gleitlager-Anordnung (7), (8) 5-25 Zentimeter beträgt.
  9. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass
    die genannten Schlauchverbindungen (10), (11) für die hydraulischen Rohrleitungen (4), (5) verstellbare Verbinder (12) aufweisen.
  10. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung hydraulische Schlauchleitungen aufweist, die von den genannten Schlauchverbindungen (10), (11) zu an der Endseite des Innenarms (3) angeordneten Schlauchverbindungen (13)-(16) führen.
  11. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung eine Kette (17) aufweist, die sich vom Gelenkarm über ein Kettenrad (18), das am kranseitigen Außenarm (2) angeordnet ist, bis zum endseitigen Innenarm (3) erstreckt.
  12. Eine teleskopische Auslegeranordnung nach Anspruch 11, dadurch gekennzeichnet, dass
    die genannte Kette (17) mit einem Kettenspanner (19) verbunden ist, der im Endbereich des Gelenkarms (1) angeordnet ist.
  13. Eine teleskopische Auslegeranordnung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung zwei oder mehrere Zylinder aufweist, um den mindestens einen ausfahrbaren Arm (2), (3) zu bewegen.
  14. Ein teleskopischer Kran, umfassend eine teleskopische Auslegeranordnung, die Folgendes aufweist:
    einen Gelenkarm (1);
    mindestens einen ausfahrbaren Arm (2), (3);
    hydraulische Rohrleitungen (4), (5), die oben auf dem Gelenkarm (1) angeordnet sind;
    und eine Gleitlager-Anordnung (7), (8), die im Endbereich des Gelenkarms (1) angeordnet ist, wobei die teleskopische Auslegeranordnung weiter eine Öffnung für die genannten hydraulischen Rohrleitungen (4), (5) in der oberen Seite des Gelenkarms (1) aufweist, dadurch gekennzeichnet, dass
    die genannte Öffnung sich auf der Seite des genannten Gelenkarms (1) befindet, so dass die hydraulischen Rohrleitungen (4), (5) derart in einem Abstand zur genannten Gleitlager-Anordnung (7), (8) stehen, dass die genannten hydraulischen Rohrleitungen (4), (5) zu Schlauchverbindungen (10), (11) führen, die durch die genannte Öffnung zugänglich sind.
  15. Ein teleskopischer Kran nach Anspruch 14, dadurch gekennzeichnet, dass
    die genannte Öffnung zumindest teilweise mit einer abnehmbaren Abdeckung (9) abgedeckt ist, die im Armbereich des genannten Gelenkarms (1) angeordnet ist.
  16. Ein teleskopischer Kran nach Anspruch 14 oder Anspruch 15, dadurch gekennzeichnet, dass
    der genannte, mindestens eine ausfahrbare Arm (2), (3) einen ausfahrbahrbaren, kranseitigen Außenarm (2) und einen weiter ausfahrbaren, endseitigen Innenarm (3) aufweist.
  17. Ein teleskopischer Kran nach einem der Ansprüche 14 bis 16, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung weiter eine Abdeckung (6) aufweist, so dass die genannten hydraulischen Rohrleitungen (4), (5) zumindest teilweise mit der genannten Abdeckung (6) abgedeckt sind.
  18. Ein teleskopischer Kran nach einem der Ansprüche 14 bis 17, dadurch gekennzeichnet, dass
    die genannten Schlauchverbindungen (10), (11) für die hydraulischen Rohrleitungen (4), (5) verstellbare Verbinder (12) aufweisen.
  19. Ein teleskopischer Kran nach einem der Ansprüche 14 bis 18, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung hydraulische Schlauchleitungen aufweist, die von den genannten Schlauchverbindungen (10), (11) zu an der Endseite des Innenarms (3) angeordneten Schlauchverbindungen (13)-(16) führen.
  20. Ein teleskopischer Kran nach einem der Ansprüche 14 bis 19, dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung eine Kette (17) aufweist, die sich vom Gelenkarm über ein Kettenrad (18), das am kranseitigen Außenarm (2) angeordnet ist, bis zum endseitigen Innenarm (3) erstreckt.
  21. Ein teleskopischer Kran nach nach Anspruch 20, dadurch gekennzeichnet, dass
    die genannte Kette (17) mit einem Kettenspanner (19) verbunden ist, der im Endbereich des Gelenkarms (1) angeordnet ist.
  22. Ein teleskopischer Kran nach einem der Ansprüche 14 bis 19,
    dadurch gekennzeichnet, dass
    die teleskopische Auslegeranordnung zwei oder mehrere Zylinder aufweist, um den mindestens einen ausfahrbaren Arm (2), (3) zu bewegen.
EP12186518.2A 2012-09-28 2012-09-28 Ausziehbarer Kran und ausziehbare Auslegeranordnung eines ausziehbaren Krans Not-in-force EP2712836B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12186518.2A EP2712836B1 (de) 2012-09-28 2012-09-28 Ausziehbarer Kran und ausziehbare Auslegeranordnung eines ausziehbaren Krans
ES12186518.2T ES2542244T3 (es) 2012-09-28 2012-09-28 Grúa telescópica y configuración telescópica de elevación de una grúa telescópica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12186518.2A EP2712836B1 (de) 2012-09-28 2012-09-28 Ausziehbarer Kran und ausziehbare Auslegeranordnung eines ausziehbaren Krans

Publications (2)

Publication Number Publication Date
EP2712836A1 EP2712836A1 (de) 2014-04-02
EP2712836B1 true EP2712836B1 (de) 2015-06-03

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ES (1) ES2542244T3 (de)

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Publication number Priority date Publication date Assignee Title
JP6531505B2 (ja) * 2015-06-11 2019-06-19 株式会社タダノ 伸縮ブームの取付構造
WO2016199722A1 (ja) * 2015-06-11 2016-12-15 株式会社タダノ 伸縮ブームの取付構造
US10676324B2 (en) 2017-03-05 2020-06-09 Thomas A Weeks Plug and play tool connection
WO2018163098A1 (en) 2017-03-10 2018-09-13 Celanese Sales Germany Gmbh Polyester polymer compositions
CN109368497A (zh) * 2018-12-21 2019-02-22 陈奕松 一种起重机伸缩吊臂的布线装置
CN114619433B (zh) * 2022-03-18 2023-08-15 唐山因泰智能科技发展有限公司 一种可伸缩式作业机构

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US3469712A (en) * 1967-02-10 1969-09-30 Arthur Haulotte Telescopic boom crane
US3893480A (en) 1973-12-26 1975-07-08 Glenn G Dunbar Hydraulic line assembly
GB2106860B (en) * 1982-09-29 1985-06-05 Coles Cranes Ltd Improvements in and relating to telescopic booms
DE19613700A1 (de) 1996-03-29 1997-10-02 M E P Gmbh Ges Fuer Consulting Teleskopartig auseinanderfahrbarer Maschinenteil
DE10032585A1 (de) 2000-07-05 2002-01-17 Deere & Co Anbaurahmen und teleskopartiger Ausleger mit Anbaurahmen
JP2002104793A (ja) * 2000-09-29 2002-04-10 Aichi Corp 伸縮ブーム
SE520498E8 (sv) 2001-11-26 2015-10-20 Komatsu Forest Ab Anordning för upphängning av ett vridbart arbetsredskap
EP1842823B1 (de) 2006-04-03 2009-09-16 Epsilon Kran GmbH Zweiteiliger Teleskoparm eines Kranes
JP5037050B2 (ja) * 2006-07-20 2012-09-26 株式会社タダノ ブーム付き作業機における伸縮ブーム

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ES2542244T3 (es) 2015-08-03

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