EP0399233B1 - Hubarbeitsbühne - Google Patents

Hubarbeitsbühne Download PDF

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Publication number
EP0399233B1
EP0399233B1 EP90107907A EP90107907A EP0399233B1 EP 0399233 B1 EP0399233 B1 EP 0399233B1 EP 90107907 A EP90107907 A EP 90107907A EP 90107907 A EP90107907 A EP 90107907A EP 0399233 B1 EP0399233 B1 EP 0399233B1
Authority
EP
European Patent Office
Prior art keywords
wheels
road
undercarriage
road wheels
lower carriage
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.)
Expired - Lifetime
Application number
EP90107907A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0399233A1 (de
Inventor
Horst H. Theisen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT90107907T priority Critical patent/ATE83823T1/de
Publication of EP0399233A1 publication Critical patent/EP0399233A1/de
Application granted granted Critical
Publication of EP0399233B1 publication Critical patent/EP0399233B1/de
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
    • 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
    • B66F11/042—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 actuated by lazy-tongs mechanisms or articulated levers

Definitions

  • the invention relates to an aerial work platform with an undercarriage, on the four corners of which support wheels are arranged, on which the undercarriage stands and can be moved during use, and to which further road wheels suitable for road transport are fastened between the support wheels, the position of the support and road wheels are adjustable in height relative to each other in such a way that the road wheels do not touch the ground during use of the undercarriage and the support wheels during transport of the undercarriage.
  • the undercarriage of such aerial work platforms is supported by four support wheels which are mounted on the four corners of the undercarriage and must be relatively unyielding so that the work platform does not fluctuate when the work platform is raised.
  • the support wheels are usually made of solid rubber. With these support wheels, the working platform can be moved over short distances. These support wheels are not suitable for transport over long distances on roads, where the working platform is attached to a truck as a trailer.
  • a generic aerial work platform is known from US Pat. No. 3,516,512.
  • the support wheels are screwed down by spindles for work, so that the undercarriage together with the road wheels is raised so far that the road wheels no longer touch the ground.
  • Such a construction is constructive and difficult to use.
  • the mast must be removed for road transport, since the platform can be moved up and down.
  • the driving stability of the platform is insufficient when the training wheels are raised.
  • the object of the invention is to improve an aerial work platform of the type mentioned at the outset in such a way that a changeover from operations to road transport and vice versa can be carried out easily, quickly, easily and with the greatest possible safety, and in which the driving stability during transport is increased is.
  • the support wheels are fixed immovably in relation to the undercarriage, so that the highest level of safety can be achieved in work.
  • the road bikes are driven upwards so that they do not interfere with work. If the aerial work platform is to be moved over greater distances, the road wheels are driven down so far that the support wheels are lifted off the ground. In this condition, the undercarriage can be attached to a truck as a trailer.
  • tandem axle makes it possible in a structurally particularly simple way to fasten the four road wheels up and down on the undercarriage.
  • Such academic axes can already be purchased from third parties.
  • the axles of the road wheels can be moved up and down by means of hydraulically or pneumatically operated cylinder-piston units. It is preferably proposed that the work platform has a lifting device with scissor-shaped support members.
  • the aerial work platform has an undercarriage 1, on the four corner areas of which a support wheel 2 is mounted. These support wheels 2 are not movable in height with respect to the undercarriage 1, i.e. the axes of the support wheels 2 cannot be adjusted at least in height relative to the undercarriage 1.
  • a lifting device 3 On the top of the undercarriage 1, a lifting device 3 is attached, which has scissor-shaped lifting members 4, with which a horizontal working platform 5 is movable up and down. For this up and down are at the scissor-shaped members 4 cylinder-piston units 6 attached, which are acted upon hydraulically or pneumatically.
  • the top of the work platform 5 is completely surrounded by a railing 7.
  • road wheels 8 are attached, the axes of which are formed by a tandem axis which is parallel to the axes of the support wheels 2.
  • the road wheels 8 can be raised and lowered relative to the undercarriage 1, the road wheels 8 being raised in the uppermost position to such an extent that their underside is higher than the underside of the support wheels 2 and, in the lowered state, the underside of the road wheels 8 is lower than the undersides the support wheels 2, so that in the lowered state the road wheels 8 raise the undercarriage 1 to such an extent that there is a sufficient distance between the support wheels 2 and the road surface.
  • a high load capacity is achieved because two pairs of road wheels 8 are attached to a tandem axle.
  • the two pairs of wheels can be moved vertically up and down by suitable constructions. It is structurally particularly simple if the road wheels 8 or their axles are mounted on the lower free ends of pivotable arms 9 which are articulated with their upper ends on the undercarriage 1. It is structurally particularly simple if the wheel axles or the arms 9 are moved up and down hydraulically or pneumatically by cylinder-piston units. Since the work platform 5 is already actuated hydraulically or pneumatically, it is structurally inexpensive to use the same actuation system for raising and lowering the road wheels 8.
  • a fork 10 is articulated on the front side of the undercarriage 1 and has an eyelet at its front free end for attachment to a towing vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Inorganic Insulating Materials (AREA)
EP90107907A 1989-04-26 1990-04-26 Hubarbeitsbühne Expired - Lifetime EP0399233B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90107907T ATE83823T1 (de) 1989-04-26 1990-04-26 Hubarbeitsbuehne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913645 1989-04-26
DE3913645A DE3913645C1 (enrdf_load_stackoverflow) 1989-04-26 1989-04-26

Publications (2)

Publication Number Publication Date
EP0399233A1 EP0399233A1 (de) 1990-11-28
EP0399233B1 true EP0399233B1 (de) 1992-12-23

Family

ID=6379439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107907A Expired - Lifetime EP0399233B1 (de) 1989-04-26 1990-04-26 Hubarbeitsbühne

Country Status (3)

Country Link
EP (1) EP0399233B1 (enrdf_load_stackoverflow)
AT (1) ATE83823T1 (enrdf_load_stackoverflow)
DE (2) DE3913645C1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100914485B1 (ko) 2007-11-30 2009-08-28 주식회사 신성에프에이 상부레일 설치용 작업대차

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027972A1 (de) 2009-07-23 2011-02-03 Waldner Labor- Und Schuleinrichtungen Gmbh Scherenhubvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516512A (en) * 1968-03-06 1970-06-23 Eisenbau Karl Ladwig Bsb Mobile scaffold
US3889778A (en) * 1973-07-26 1975-06-17 Gerald Dean Dotts Platform lift
FR2317218A1 (fr) * 1975-07-07 1977-02-04 Systems Manufacturing Co Elevateur a croisillons articules

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100914485B1 (ko) 2007-11-30 2009-08-28 주식회사 신성에프에이 상부레일 설치용 작업대차

Also Published As

Publication number Publication date
ATE83823T1 (de) 1993-01-15
DE3913645C1 (enrdf_load_stackoverflow) 1990-10-31
EP0399233A1 (de) 1990-11-28
DE59000636D1 (de) 1993-02-04

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