EP0343041A1 - Von einem elektrischen Motor angetriebene Leiter - Google Patents

Von einem elektrischen Motor angetriebene Leiter Download PDF

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Publication number
EP0343041A1
EP0343041A1 EP89401305A EP89401305A EP0343041A1 EP 0343041 A1 EP0343041 A1 EP 0343041A1 EP 89401305 A EP89401305 A EP 89401305A EP 89401305 A EP89401305 A EP 89401305A EP 0343041 A1 EP0343041 A1 EP 0343041A1
Authority
EP
European Patent Office
Prior art keywords
ladder
assembly according
fixed
reverse
assembly
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
EP89401305A
Other languages
English (en)
French (fr)
Other versions
EP0343041B1 (de
Inventor
Serge Perin
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
Publication of EP0343041A1 publication Critical patent/EP0343041A1/de
Application granted granted Critical
Publication of EP0343041B1 publication Critical patent/EP0343041B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
    • E06C9/12—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members laterally displaceable

Definitions

  • the present invention relates to a ladder of the industrial type comprising two wheels allowing it to be moved and a trolley provided with four rollers sliding on an I P N.
  • the object of the present invention is to avoid these drawbacks by producing a motorized ladder of a new type which eliminates any fatigue on the part of the user: he can at his will perform his work at the desired height no longer needing to go down, these movement operations are done with the right hand which activates the push buttons to start at the exact place where it is: forward, reverse.
  • the non-negligible advantage of this invention consists in starting and stopping without any sudden, securing the user for the risk of falls, this achievement is due to the installation of an electronic frequency converter from 0 to 120 hertz him even controlled by a microprocessor which regulates the rise and fall times of the motor supply.
  • Another advantage for the user it has a safety ramp specially designed to enlarge its working place allowing it to move without narrowness when it is occupied, and high enough so that it can lean taking thus a good working position.
  • a safety device When the ladder moves forward with its user, a safety device is fixed by two movable yokes, called a hanging bar provided with a limit switch which automatically cuts the power to the motor, this in case a third party is busy working in the passage of the ladder.
  • the wiring along the handrail is 10 volts, eliminating the risk of electric shock.
  • the subject of the invention is a motor assembly of a ladder provided in the upper part of a carriage moving along a rail and in the lower part of two wheels integral with each of the two uprights, characterized in what it consists of a motor assembly comprising pulley (10) belt (4), gearmotor (6) (7) mounted on a support frame (5) allowing its attachment to the uprights (1) of the scale by bolts housed under said ladder and supplied by a power cable (20) and by a conductive sheath (21) connected to the rail (19) by supports (29) and in which are received friction rollers arranged at the top of the cable d 'power supply, the control being provided by contactors (12) forward, reverse.
  • a motor assembly comprising pulley (10) belt (4), gearmotor (6) (7) mounted on a support frame (5) allowing its attachment to the uprights (1) of the scale by bolts housed under said ladder and supplied by a power cable (20) and by a conductive sheath (21) connected to the rail (19) by supports (29) and in which are
  • an electronic variator (15) is provided placed in a metal box at the top of the scale and fixed by flat iron flanges incorporating a microprocessor controlling the ascents and descents of the speed of rotation of the gearmotor group (6) (7) in forward and reverse.
  • Safety means are further provided in the form of a square tube frame (14) provided with two horizontal protection plates (30) articulated on two movable yokes (13) fixed by screws under the uprights (1) of the ladder for actuating a limit switch (18) which cuts the supply as soon as there is an obstacle. It includes a protection formed by a ramp (11) forming a railing through which passes the power cable (20) held by arms (13) of superimposed connection support.
  • An engine ventilation casing (8) is provided in expanded metal fixed by screws on the casing (5).
  • the pushers (12) are arranged on three levels at the connecting arms (13) of the ramp (11) grouped by two with indication carriers in insulating material and indicating forward and reverse.
  • each of the scales is then adjusted to cover a rolling distance, for example 10 meters.
  • This safety means has been provided in front of the ladder in the form of a square articulated tu be coming to meet as soon as there is an obstacle a limit switch which cuts the power supply and at the end of the rail (19) is provided a fixed antenna (33) actuating the contactor (34) of the first scale, similarly at the end of the rail a fixed antenna (33) is provided intended to actuate a second contact (34) provided on the last ladder opposite.
  • the invention also provides a rear safety device in the form of a flexible cover (36) illustrated in FIG. (8) fixed on the protective cover (5) of the existing engine assembly coming to meet as soon as there is obstacle a limit switch (37) thus securing the reverse of the ladder.
  • a time switch is attached near the electrical connection box; this being set for the daily working time is cut in the evening and is reset in the morning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
EP19890401305 1988-05-11 1989-05-10 Von einem elektrischen Motor angetriebene Leiter Expired - Lifetime EP0343041B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8806343A FR2631376B1 (fr) 1988-05-11 1988-05-11 Ensemble de motorisation pour echelle supportee par rail superieur et roues inferieures
FR8806343 1988-05-11

Publications (2)

Publication Number Publication Date
EP0343041A1 true EP0343041A1 (de) 1989-11-23
EP0343041B1 EP0343041B1 (de) 1991-04-03

Family

ID=9366214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890401305 Expired - Lifetime EP0343041B1 (de) 1988-05-11 1989-05-10 Von einem elektrischen Motor angetriebene Leiter

Country Status (3)

Country Link
EP (1) EP0343041B1 (de)
DE (1) DE68900055D1 (de)
FR (1) FR2631376B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378801A1 (de) * 1989-01-18 1990-07-25 Schreyer Constructions Metalliques S.A. Rolleiter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232375A (en) * 1964-03-13 1966-02-01 William Hugh Brown Self-propelled scaffold
US3340960A (en) * 1965-12-13 1967-09-12 Louis F Wilson Ladder
US3735838A (en) * 1972-05-22 1973-05-29 Everett Sound Machine Works In Wheeled ladder with a weight actuated self-locking wheel thereon

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232375A (en) * 1964-03-13 1966-02-01 William Hugh Brown Self-propelled scaffold
US3340960A (en) * 1965-12-13 1967-09-12 Louis F Wilson Ladder
US3735838A (en) * 1972-05-22 1973-05-29 Everett Sound Machine Works In Wheeled ladder with a weight actuated self-locking wheel thereon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378801A1 (de) * 1989-01-18 1990-07-25 Schreyer Constructions Metalliques S.A. Rolleiter

Also Published As

Publication number Publication date
FR2631376A1 (fr) 1989-11-17
FR2631376B1 (fr) 1990-08-17
DE68900055D1 (de) 1991-05-08
EP0343041B1 (de) 1991-04-03

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