EP0421977A2 - Plate-forme de travail mobile extensible - Google Patents

Plate-forme de travail mobile extensible Download PDF

Info

Publication number
EP0421977A2
EP0421977A2 EP90890244A EP90890244A EP0421977A2 EP 0421977 A2 EP0421977 A2 EP 0421977A2 EP 90890244 A EP90890244 A EP 90890244A EP 90890244 A EP90890244 A EP 90890244A EP 0421977 A2 EP0421977 A2 EP 0421977A2
Authority
EP
European Patent Office
Prior art keywords
shaft
chain
catenary
lifting
working platform
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.)
Granted
Application number
EP90890244A
Other languages
German (de)
English (en)
Other versions
EP0421977A3 (en
EP0421977B1 (fr
Inventor
Karl Pach
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.)
Cessione elin Energieversorgung GmbH
Original Assignee
Andritz Hydro GmbH Austria
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
Priority claimed from AT200089A external-priority patent/ATA200089A/de
Priority claimed from AT276589A external-priority patent/ATA276589A/de
Application filed by Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0421977A2 publication Critical patent/EP0421977A2/fr
Publication of EP0421977A3 publication Critical patent/EP0421977A3/de
Application granted granted Critical
Publication of EP0421977B1 publication Critical patent/EP0421977B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism

Definitions

  • the invention relates to a catenary car using a lifting and lowering work platform.
  • Catenary wagons or mobile work and assembly vehicles with the common feature of a lifting and lowering working platform have been in use for a long time.
  • a wide variety of designs of such vehicles are known, the main task of which is the necessity to bring about an extensibility of the work platform parallel to a reference surface - usually an undercarriage.
  • Various lifting and lowering systems are used for this purpose.
  • the work platform is hydraulically raised and lowered by means of a scissor linkage.
  • a lifting and lowering device of this type is described for example in DE-Gbm G 83 11 437 8. It is a mobile air traffic control cabin in which the disadvantage of this system, namely the mechanical instability of the working platform when extended, is obvious. The forces caused by wind, which act on the work platform when extended, cause the scissor linkage to sway and thus endanger those working on the work platform.
  • Catenary wagons have also been proposed in which the working platform is mounted on links which can be moved telescopically to one another.
  • the problem of paralleling the working platform to the chassis of the catenary car with mechanical and / or electrical measures In principle, the disadvantage of these lifting and lowering systems in the simpler designs is the relatively great inaccuracy of the parallel guidance of the working platform, while the complex and precise designs are very susceptible to malfunction.
  • the object of the invention is therefore to provide a catenary wagon which avoids the disadvantages mentioned and has simple operability and the highest possible operational and personal safety.
  • the object is achieved by the invention.
  • This is characterized in that the height adjustment of the working platform is carried out by four lifting columns, each with hydraulically operated links that can be moved telescopically relative to one another, each lifting column being adjustable by a stationary, vertically arranged toothed chain running over a chain wheel and two pressure rollers, and wherein the sprockets for two lifting columns are rigidly mounted on a shaft, and that an additional sprocket is rigidly mounted on each shaft, and that a first shaft is connected by a chain to a second shaft.
  • a development of the invention is that the work platform is mounted on more than four, preferably an even number, lifting columns, each
  • Shaft is connected to the subsequent shaft by means of a chain.
  • the chain or chains connecting the shafts is or are crossed in a figure of eight.
  • all movement units are arranged within the space delimited by the lifting columns. This further development is therefore advantageously used when design reasons require such a placement of all movement units.
  • the lifting columns are mounted on an uppercarriage, which is seated on a bogie.
  • the working platform has at least one horizontal extension that can be extended laterally.
  • each side of a railing comprising the work platform can be folded inwards or outwards downwards.
  • This feature enables the catenary wagon according to the invention to be used when the catenary is switched on with the catenary switched on.
  • an engine drives the first shaft, and chains are also used to transmit torque to the subsequent shaft or shafts.
  • the invention is preferably designed in such a way that the chains transmitting the torque are crossed in a figure of eight.
  • An additional development of the invention provides that a break detection device for each chain is provided which activates a lifting column blocking system when activated.
  • FIG. 1 shows a side view of the catenary carriage according to the invention with an uncrossed chain.
  • 2 shows a front view of the catenary wagon with the work platform set transversely to the direction of travel, an eight-cross chain being used.
  • Fig. 3 shows the essential upper part of a lifting column with chain and sprocket.
  • wheel sets 30 carrying an undercarriage 1 are seated on rails 18.
  • a working platform 4 rests on lifting columns 3a, 3b which are mounted vertically on an uppercarriage 2.
  • the superstructure 2 is mounted on a bogie 12 which rests on the undercarriage 1. With the bogie 12, the superstructure 2 can be rotated to the left and to the right at any angle, also transversely to the direction of travel.
  • 1 and 2 also show that movement units 5a and 5b and 5c are provided in the upper part of the lifting columns 3a and 3b.
  • Each of these movement units 5a and 5b and 5c consists of a chain wheel arranged between two pillow block bearings and two pressure rollers. Two pillow block bearings are used to hold the left and right ends of the shaft, which is provided for two lifting columns.
  • An additional sprocket is preferably rigidly placed approximately in the middle between each two associated lifting columns on the shaft assigned to these lifting columns.
  • the right lifting column 3b and 5c and a lifting column behind it, which is not visible in FIGS. 1 and 2 form a functional unit.
  • a connection from the first shaft to the second shaft takes place via the two additionally rigidly attached chain wheels, using an uncrossed chain 8a or a figure-eight crossed chain 8b. In this way, the synchronization of the rotational speeds of these two shafts, and thus also the synchronization of the lifting speed and the stroke of all four lifting columns, is guaranteed.
  • a chain case 6 protects both the operating personnel from injuries and the movement units 5a, 5b and 5c, as well as the uncrossed chain 8a and the figure-eight crossed chain 8b from dirt and moisture.
  • a tool cabinet 7 is expediently provided on the undercarriage 1.
  • the work platform 4 is enclosed by a railing 17 which can be folded inwards or outwards downwards.
  • a ladder 13 extends from the superstructure 2 to the work platform 4. Since this ladder 13 is designed to be extendable and is firmly connected to both the superstructure 2 and the work platform 4, its length automatically adapts to the respective extension height of the work platform 4.
  • a laterally extendable, horizontal extension 14 is also shown. This means that work areas that are difficult to access can be reached from the overhead contact car.
  • the sectional view of the upper part of a lifting column in Fig. 3 shows its telescopically movable members, namely a hollow, rigidly mounted piston rod 22, an inner movable lifting column part 31 and an outer stationary lifting column part 32.
  • the outer stationary lifting column part 32 is rigid by means of a stable upright construction anchored to the superstructure.
  • the inner movable lifting column part 31 is designed with double walls.
  • the outer stationary lifting column part 32 ensures the stability of the lifting column towards the outside when the inner movable lifting column part 31 is extended.
  • a small-area sliding plate 25 is arranged between the outer stationary lifting column part 32 and the inner movable lifting column part 31 and is firmly connected to the outer stationary lifting column part 32.
  • the sliding plate 25 also counteracts edge pressure, especially with a high lifting height.
  • Another such slide plate is located in the lower part of the lifting column and is therefore not visible in the drawing.
  • this sliding plate is fixedly connected to the inner movable lifting column part 31, and thus also takes part in the lifting movements of the inner moving lifting column part.
  • a piston 26 is attached to the head end of the hollow piston rod 22. Oil is pressed upward through a bore 24 provided axially in the piston 26 and thereby causes the lifting of the inner movable lifting column part 31. If a hydraulic line breaks (the hydraulic lines are not apparent from the drawing) in the lower part of the lifting column, the inner movable lifting column part 31 - and thus the working platform - drops at a defined speed which is dependent on the bore 24.
  • the end positions of all inner movable lifting column parts during lifting movements are forced by means of a stationary roller chain 21, which is rigidly connected with its upper end by means of a holder 27 and a chain fastening 28 to the head part of the inner moving lifting column part 31.
  • the other end of the stationary roller chain 21 is (not shown in the drawing) rigidly connected to the foot part of the inner movable column part 31.
  • a positive connection from the first shaft 19 to the second shaft is ensured via the additional sprocket, which is placed approximately in the middle between the two associated lifting columns on the first shaft 19 and the second shaft, by means of an uncrossed or a roller chain which is crossed in a figure of eight .
  • the opposite, on each sprockets mounted on another shaft have the same direction of rotation when using an uncrossed chain 8a, and opposite sense of rotation when using a figure-8 crossed chain 8b. Since the movement units of the associated pairs of lifting columns are opposite each other in mirror symmetry, the respective directions of rotation of the chain wheels 29 cause all four inner movable lifting column parts 31 to either raise or lower at the same time, each with the same speed, as a result of which the same lifting paths are also covered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)
  • Ladders (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Movable Scaffolding (AREA)
  • Body Structure For Vehicles (AREA)
  • Electric Cable Installation (AREA)
  • Catching Or Destruction (AREA)
  • Harvesting Machines For Specific Crops (AREA)
  • Vehicle Body Suspensions (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP90890244A 1989-08-24 1990-08-16 Plate-forme de travail mobile extensible Expired - Lifetime EP0421977B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT2000/89 1989-08-24
AT200089A ATA200089A (de) 1989-08-24 1989-08-24 Auf schienen verfahrbarer fahrleitungswagen mit eigenantrieb
AT276589A ATA276589A (de) 1989-12-05 1989-12-05 Gerüstwagen
AT2765/89 1989-12-05

Publications (3)

Publication Number Publication Date
EP0421977A2 true EP0421977A2 (fr) 1991-04-10
EP0421977A3 EP0421977A3 (en) 1991-09-25
EP0421977B1 EP0421977B1 (fr) 1994-01-12

Family

ID=25597389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890244A Expired - Lifetime EP0421977B1 (fr) 1989-08-24 1990-08-16 Plate-forme de travail mobile extensible

Country Status (5)

Country Link
EP (1) EP0421977B1 (fr)
AT (1) ATE100172T1 (fr)
CS (1) CS404690A3 (fr)
DE (1) DE59004214D1 (fr)
HU (1) HU206658B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573080A (en) * 1994-01-12 1996-11-12 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Work car
US6349793B1 (en) * 2000-01-27 2002-02-26 Duane Kincaid Vehicle mounted lifting apparatus and method
FR2813546A1 (fr) * 2000-09-07 2002-03-08 Pinguely Haulotte Caisse a outils mobile et adaptee a un travail en hauteur
CN101962995A (zh) * 2010-08-20 2011-02-02 杭州赛奇高空作业机械有限公司 施工用多桅柱移动式升降工作平台
CN104158128A (zh) * 2014-08-13 2014-11-19 国家电网公司 一种多功能继电保护接线平台
CN108502820A (zh) * 2018-02-09 2018-09-07 北京天格高通科技有限公司 一种轨道车辆用接触网作业梯车
CN114055025A (zh) * 2021-11-29 2022-02-18 中冶重工（唐山）有限公司 熔融还原炉主体焊接平台及其施工方法
CN116537814A (zh) * 2023-05-12 2023-08-04 石家庄铁道大学 隧道检修作业升降平台

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103085051B (zh) * 2013-01-23 2015-10-21 宁波电业局 一种继电保护工具平台
CN103552956A (zh) * 2013-11-12 2014-02-05 沈洪彬 一种升降台
CN109110673B (zh) * 2018-06-27 2020-04-21 国网山东省电力公司滨州市沾化区供电公司 一种运检工具箱提升装置
CN113266135A (zh) * 2021-04-25 2021-08-17 吴煜 一种可进行三级升降的可移动式装修脚手架
CN115613793B (zh) * 2022-11-12 2024-05-17 华新建工集团有限公司 一种绿色建筑支撑平台

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB501217A (en) * 1937-10-06 1939-02-23 Epco Ltd Improvements in or relating to hydraulic lifts
CH256924A (de) * 1947-03-11 1948-09-15 Peter Ag Konrad Zweisäulenheber.
US2750004A (en) * 1952-04-09 1956-06-12 Dover Corp Combined load-equalizing and safety device for lifts
GB759187A (en) * 1954-01-20 1956-10-17 Access Equipment Ltd Improvements in or relating to mobile working platforms
DE2238213A1 (de) * 1972-08-03 1974-02-14 Ver Flugtechnische Werke Steuerung fuer hoehenveraenderliche arbeitsbuehnen
EP0214345A1 (fr) * 1983-07-31 1987-03-18 Nisso Sangyo Co Ltd Passerelle extensible
DE8900944U1 (de) * 1989-01-27 1989-03-23 Franz Hörnstein GmbH & Co. KG, 7100 Heilbronn Hebebühne für Kraftfahrzeuge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB501217A (en) * 1937-10-06 1939-02-23 Epco Ltd Improvements in or relating to hydraulic lifts
CH256924A (de) * 1947-03-11 1948-09-15 Peter Ag Konrad Zweisäulenheber.
US2750004A (en) * 1952-04-09 1956-06-12 Dover Corp Combined load-equalizing and safety device for lifts
GB759187A (en) * 1954-01-20 1956-10-17 Access Equipment Ltd Improvements in or relating to mobile working platforms
DE2238213A1 (de) * 1972-08-03 1974-02-14 Ver Flugtechnische Werke Steuerung fuer hoehenveraenderliche arbeitsbuehnen
EP0214345A1 (fr) * 1983-07-31 1987-03-18 Nisso Sangyo Co Ltd Passerelle extensible
DE8900944U1 (de) * 1989-01-27 1989-03-23 Franz Hörnstein GmbH & Co. KG, 7100 Heilbronn Hebebühne für Kraftfahrzeuge

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573080A (en) * 1994-01-12 1996-11-12 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Work car
CN1064014C (zh) * 1994-01-12 2001-04-04 弗兰茨普拉塞铁路机械工业股份有限公司 作业车
US6349793B1 (en) * 2000-01-27 2002-02-26 Duane Kincaid Vehicle mounted lifting apparatus and method
FR2813546A1 (fr) * 2000-09-07 2002-03-08 Pinguely Haulotte Caisse a outils mobile et adaptee a un travail en hauteur
EP1186384A1 (fr) * 2000-09-07 2002-03-13 Pinguely-Haulotte Caisse à outils mobile et adaptée à un travail en hauteur
CN101962995A (zh) * 2010-08-20 2011-02-02 杭州赛奇高空作业机械有限公司 施工用多桅柱移动式升降工作平台
CN104158128A (zh) * 2014-08-13 2014-11-19 国家电网公司 一种多功能继电保护接线平台
CN108502820A (zh) * 2018-02-09 2018-09-07 北京天格高通科技有限公司 一种轨道车辆用接触网作业梯车
CN108502820B (zh) * 2018-02-09 2019-06-14 北京天格高通科技有限公司 一种轨道车辆用接触网作业梯车
CN114055025A (zh) * 2021-11-29 2022-02-18 中冶重工（唐山）有限公司 熔融还原炉主体焊接平台及其施工方法
CN116537814A (zh) * 2023-05-12 2023-08-04 石家庄铁道大学 隧道检修作业升降平台
CN116537814B (zh) * 2023-05-12 2023-11-21 石家庄铁道大学 隧道检修作业升降平台

Also Published As

Publication number Publication date
EP0421977A3 (en) 1991-09-25
HU905327D0 (en) 1991-02-28
HU206658B (en) 1992-12-28
DE59004214D1 (de) 1994-02-24
CS404690A3 (en) 1992-01-15
EP0421977B1 (fr) 1994-01-12
HUT58648A (en) 1992-03-30
ATE100172T1 (de) 1994-01-15

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