EP1008550A1 - Agencement mécanique pour limiter le mouvement de plate-formes de travail - Google Patents

Agencement mécanique pour limiter le mouvement de plate-formes de travail Download PDF

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Publication number
EP1008550A1
EP1008550A1 EP99116772A EP99116772A EP1008550A1 EP 1008550 A1 EP1008550 A1 EP 1008550A1 EP 99116772 A EP99116772 A EP 99116772A EP 99116772 A EP99116772 A EP 99116772A EP 1008550 A1 EP1008550 A1 EP 1008550A1
Authority
EP
European Patent Office
Prior art keywords
mechanical arrangement
lever
arrangement according
eccentric
ropes
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
EP99116772A
Other languages
German (de)
English (en)
Other versions
EP1008550B1 (fr
Inventor
Gunter Katterwe
Erich Richter
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.)
GEDA Dechentreiter GmbH and Co KG
Original Assignee
BMG BAUGERAETE und MASCHINEN GmbH
BMG BAUGERAETE und MASCHINEN G
Bmg Baugerate und Maschinen GmbH
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 BMG BAUGERAETE und MASCHINEN GmbH, BMG BAUGERAETE und MASCHINEN G, Bmg Baugerate und Maschinen GmbH filed Critical BMG BAUGERAETE und MASCHINEN GmbH
Publication of EP1008550A1 publication Critical patent/EP1008550A1/fr
Application granted granted Critical
Publication of EP1008550B1 publication Critical patent/EP1008550B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/54—Safety gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/605—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes scaffolding winshes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/16—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes for action on ropes or cables

Definitions

  • the invention relates to a mechanical arrangement for limiting the movement of working platforms, in particular for limiting the inclination, according to the preamble of the claims.
  • US Pat. No. 3,865,265 contains safety accessories for load carts with an elevator, in which an inclination measurement is carried out with a pendulum potentiometer.
  • the European standard prEN 1808 requires devices to operate which prevent the inclination of work platforms without excessive electrical power and which limit the inclination to 14 angular degrees.
  • Such mechanical inclination limitation arrangements are realized on work platforms in which the winches are attached to the end faces.
  • An arrangement of this type known from practice is integrated in the cable winch and is triggered by a lever which is triggered when the work platform is inclined by the safety rope hanging vertically due to its own weight.
  • the object of the invention is to provide a simple arrangement that the inclination of the working platform, especially its longitudinal inclination limit allowed and which are also primarily at the Use of C-brackets and their equidirectional attachment works in any direction.
  • the attachment of the carriers on both sides of the lever center line, preferably at the same distance from the center line and from the lever swivel axis, is the arrangement according to the invention regardless of the direction of inclination effective in the longitudinal direction of the work platform in the same way.
  • the lever itself is pivoted at one of its ends and is on at the other end from the rope, preferably from the suspension rope, or from the ropes (Supporting rope and safety rope) guided and swiveled.
  • the Lever cranked at this end and with recesses for the rope / the Ropes.
  • the recesses can be a much larger one Diameter than the ropes, so that the lever from the rope / Ropes are only moved when they rest on the edge of the recess, if So the work platform has reached a certain longitudinal inclination (10 ° - 14 °).
  • the drivers are advantageously designed as pins and on a cross attached to the lever, connected to this bracket attached; she interact with a slider that is close to one of its End is provided with a locking plate, which acts on the eccentric.
  • the eccentric is conveniently attached to a shaft into which an in The normal position of the pin protruding into the locking plate is firmly inserted.
  • the locking plate is essentially parallel to the pin with the slide or adjustable to the lever.
  • At least one pair of rollers is provided for the carrying rope and the securing rope, which has guide grooves for the ropes along the circumferences of the rollers and with which an eccentric pair cooperates, that with at least one Locking pin is rigidly arranged on a shaft. At least that is a locking pin is located approximately in the middle of the shaft and protrudes at the center or Normal position in corresponding recesses in the locking plate inside. Reset levers are provided at the ends of the shaft, via which after appropriate setup of the working platform Limiting device returned to the normal position This means that according to the safety regulations Independence of the arrangement according to the invention from auxiliary energy and automatic guaranteed.
  • Fig. 1 the outline of a work platform 10 is shown, which is in two C-frame 11, 12 hung and connected to them.
  • Each of the C-brackets 11, 12 is with a roller head 13 or 14 and a winch 15 or 16 provided and suspended on ropes 17, 18 and 19, 20.
  • the ropes 17, 19 are carrying ropes and the ropes 18, 20 are safety ropes.
  • By pressing the Winches 15, 16 are along the work platform 10 in the vertical direction a building wall, not shown, adjustable.
  • a C-shaped bracket for example.
  • the bracket 11 is shown, the inclined roller head 13 as a housing for the invention Limiting arrangement 21 and at least one pair of deflection rollers 22, 23 is designed for the ropes 17, 18.
  • the ropes are removed from the pulleys approximately parallel to a vertical component 111 of the bracket 11 of the winch 15 fed, which realizes the vertical movement of the C-bracket 11.
  • the roller head 13 opposite end of Vertical component 111 is a support 112 for the work platform, which are substantially perpendicular to the vertical member 111 and parallel is directed to the roller head 13.
  • the ropes 17, 18 can be outside or fed to the winch 15 within the vertical bracket component 111 become.
  • a pair of deflecting rollers 22, 23 for a support cable 17 and a safety cable 18 is rotatably mounted in the housing 13 about an axis XX.
  • the deflection rollers 22, 23 are provided on their peripheral surfaces with grooves 221, 231 for the defined guiding of the ropes 17, 18.
  • the rollers 22, 23 can be connected to one another separately or in a rotationally rigid manner, can be mounted with an axis or rotatable about an axis, and they can preferably have the same or different diameters.
  • the guide roller 22 hides the guide roller 23, which is why the reference numerals for the latter and the groove 231 are set in parentheses.
  • support arms 24, 42 are fixedly provided between the pair of rollers and each side housing wall 131, 133, which are supported on the one hand on a physical axis 25 and on the other hand on a holding rod 26 between the housing walls 131, 133 .
  • a lever 28 is pivotally mounted in a bearing 27 about an axis YY at one end with a pin 281, which cranked at the other end and has corresponding guide recesses 282, 283 for the ropes 17, 18.
  • the axis YY is directed essentially at right angles to the housing wall 132 and to the axis XX.
  • a support arm 284 which extends transversely to the lever and parallel to the lever pivot plane and has driver pins 285, 286 or driver edges arranged parallel to the axis YY at its ends.
  • driver pins interact with a stop plate 291, which is attached to both sides of a slide 29.
  • the slide 29 is non-rotatable with its ends in slide bearings 292, 293 and is displaceably mounted essentially parallel to the fixed housing walls 131, 132, the upper slide bearing 293 being arranged in a rod-shaped bearing component 30 fixed to the housing and the lower slide bearing 292 being in one console 31 fastened to the housing wall 132.
  • a helical spring 32 which supports the housing-mounted bearing component 30 and the plunger-fixed stop plate 291 and surrounds the slider 29, causes the stop plate 291 to only ever use one of the pins (one of the edges) 285 depending on the pivoting of the lever 28 about the axis YY , 286 is in contact.
  • a rigid sheet or a locking plate 33 with a recess 331 for a locking pin 341 is attached above the bracket 31, which is rigidly connected to a shaft, preferably a hollow shaft 34, which can be pivoted about an axis ZZ.
  • the shaft 34 mounted in and between the housing walls 131, 133 is further provided with eccentric disks 343, 344 between the housing walls 131 and 133 and at its ends outside the housing 13 with adjusting levers 345, 346.
  • the locking pin 341 is guided through an elongated hole 311 located in the bracket 31 and directed at right angles to the housing wall 132, the hole walls located in the vicinity of the housing wall 132 at the same time serving to limit the pivoting range of the pin 341 and thus the shaft 34.
  • Drawbars 35, 36 are articulated at one end to the eccentric disks 343, 344, which are supported with the aid of helical springs 37, 38 against support arms 24, 42.
  • the coil springs 37 and 38 surround the tie rods 35 and 36 between a stop nut 243, 244 screwed on at their free ends and adjustable to adjust the spring tension and the associated support arm 24, 42.
  • the articulation points of the tie rods 35, 36 are located on the eccentric discs 343, 344 in the normal position near the housing wall 132.
  • the limiting arrangement 21 comprises according to the above in essential the lever 28, the slider 29, the console 31, the Locking plate 33, the shaft 34 with the pin 341 and the eccentric discs 343 and 344, the tie rods 35, 36 and the support arms 24, 42. In there is such a roller head 13, 14 Limiting arrangement 21.
  • the support arms 24, 42 can also support against pins fastened in the housing walls 131, 133. It is also possible with only one pull rod and one support arm get along between the eccentric discs 343 and 344. To the The driver pins 285, 286 can also be a single one Take along element of sufficient width, the side edges then act on the stop plate 291. Also with regard to the design of the Rotating, locking and swiveling elements, the assignment of the individual Elements to each other and to the housing 13, the invention is diverse variable.
EP19990116772 1998-12-10 1999-08-26 Agencement mécanique pour limiter le mouvement de plate-formes de travail Expired - Lifetime EP1008550B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998157669 DE19857669C2 (de) 1998-12-10 1998-12-10 Mechanische Anordnung zur Begrenzung der Bewegung von Arbeitsbühnen
DE19857669 1998-12-10

Publications (2)

Publication Number Publication Date
EP1008550A1 true EP1008550A1 (fr) 2000-06-14
EP1008550B1 EP1008550B1 (fr) 2003-10-29

Family

ID=7891050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990116772 Expired - Lifetime EP1008550B1 (fr) 1998-12-10 1999-08-26 Agencement mécanique pour limiter le mouvement de plate-formes de travail

Country Status (4)

Country Link
EP (1) EP1008550B1 (fr)
AT (1) ATE253014T1 (fr)
DE (2) DE19857669C2 (fr)
ES (1) ES2207094T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2238072A1 (fr) * 2007-12-19 2010-10-13 SafeWorks, LLC Dispositif de maintien sous tension pour le levage de charge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109341B4 (de) * 2013-08-28 2021-03-04 Tractel Greifzug Gmbh Hebeplattform mit Neigungsüberwachung
CN116771869B (zh) * 2023-08-17 2023-10-20 山西科达自控股份有限公司 一种用于无极绳牵引传动机构的张紧装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173758A2 (fr) * 1972-03-01 1973-10-12 Laho Materiel Entr Trava
DE2732516A1 (de) * 1977-07-19 1979-02-01 Mannesmann Ag Einrichtung zur sicherung, insbesondere einer arbeitsbuehne fuer gebaeudefassaden
FR2427997A1 (fr) * 1978-06-09 1980-01-04 Tractel Sa Dispositif automatique d'intervention destine a arreter le mouvement d'inclinaison d'une nacelle suspendue a deux ou plusieurs treuils
EP0300892A1 (fr) * 1987-07-21 1989-01-25 Michel Cavalieri Ensemble de sécurité pour treuil d'échafaudage volant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865265A (en) * 1973-08-20 1975-02-11 Brudi Equipment Lift truck safety accessory

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173758A2 (fr) * 1972-03-01 1973-10-12 Laho Materiel Entr Trava
DE2732516A1 (de) * 1977-07-19 1979-02-01 Mannesmann Ag Einrichtung zur sicherung, insbesondere einer arbeitsbuehne fuer gebaeudefassaden
FR2427997A1 (fr) * 1978-06-09 1980-01-04 Tractel Sa Dispositif automatique d'intervention destine a arreter le mouvement d'inclinaison d'une nacelle suspendue a deux ou plusieurs treuils
EP0300892A1 (fr) * 1987-07-21 1989-01-25 Michel Cavalieri Ensemble de sécurité pour treuil d'échafaudage volant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2238072A1 (fr) * 2007-12-19 2010-10-13 SafeWorks, LLC Dispositif de maintien sous tension pour le levage de charge
EP2238072A4 (fr) * 2007-12-19 2013-07-10 Safeworks Llc Dispositif de maintien sous tension pour le levage de charge

Also Published As

Publication number Publication date
DE59907533D1 (de) 2003-12-04
ATE253014T1 (de) 2003-11-15
ES2207094T3 (es) 2004-05-16
EP1008550B1 (fr) 2003-10-29
DE19857669C2 (de) 2003-11-27
DE19857669A1 (de) 2000-06-15

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