EP0290034A2 - Echelle - Google Patents

Echelle Download PDF

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Publication number
EP0290034A2
EP0290034A2 EP88107313A EP88107313A EP0290034A2 EP 0290034 A2 EP0290034 A2 EP 0290034A2 EP 88107313 A EP88107313 A EP 88107313A EP 88107313 A EP88107313 A EP 88107313A EP 0290034 A2 EP0290034 A2 EP 0290034A2
Authority
EP
European Patent Office
Prior art keywords
central spar
section
central
ladder
vertical ladder
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.)
Withdrawn
Application number
EP88107313A
Other languages
German (de)
English (en)
Other versions
EP0290034A3 (fr
Inventor
Ernst Söll
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.)
Soell Industrieschmiede GmbH
Original Assignee
Soell Industrieschmiede 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 Soell Industrieschmiede GmbH filed Critical Soell Industrieschmiede GmbH
Publication of EP0290034A2 publication Critical patent/EP0290034A2/fr
Publication of EP0290034A3 publication Critical patent/EP0290034A3/fr
Withdrawn legal-status Critical Current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
    • E06C1/381—Ladders with rungs or treads attached only to one rigid longitudinal member
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • E06C7/187—Guiding rail
    • 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
    • E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted

Definitions

  • the invention relates to a vertical ladder according to the preamble of claim 1.
  • Such a ladder is known from DE-A-1 961 757 and DE-A-2 123 629.
  • the opening of the C-shaped cross section points forward, ie towards the person climbing the ladder.
  • the rungs are led through openings in the side surfaces of the central spar.
  • the known vertical ladder is attached to a structure, for example concrete towers and steel or lattice masts, by means of holding brackets which are fastened to the central strut by means of screws which run parallel to the rungs and are guided through openings in the side faces of the central stringer.
  • the attachment can also be done by screws that are guided through openings in the closed rear of the central spar.
  • the central spar also serves as a guide rail for fall protection, as described in DE-A-1 961 757.
  • a distance of the holding bracket of not more than about 1.12 m is required in the known vertical ladders.
  • the rung spacing is 28 cm.
  • a distance between the retaining brackets of 1.12 m is optimal in economic terms.
  • An increase in the spacing of the holding brackets would require a reinforcement of the central spar, which would increase the total costs, which are made up of the production costs and the costs for the attachment to the structure.
  • the invention has for its object to improve the construction of the fixed ladder so that the total costs resulting from the manufacturing costs and the cost of attachment are reduced.
  • the distances between the holding brackets can be increased to 2.80 m without reinforcing the central spar.
  • the improved stability of the central spar results from the fact that the rungs increase its stability by being welded to the rear of the central spar.
  • the central spar has a similar stability to a closed box spar.
  • the weakening of the central spar caused by the openings provided for the rungs is eliminated in the known vertical ladders.
  • a rail for guiding the fall protection device can be attached to the closed front of the central strut. Despite the additional costs for this guide rail, the total costs are still lower than with the known fixed ladders.
  • the fixed ladder is expediently made of hot-dip galvanized steel.
  • the vertical ladder has a central strut 1 which has a profile with a C-shaped cross section.
  • the width of the central spar 1 is approximately twice as large as its depth, ie the cross-sectional profile has an aspect ratio of approximately 2: 1.
  • the width of the opening 4 of the C-shaped cross-section is somewhat smaller than the depth of the central spar 1.
  • rungs 2 are welded along the central spar, on the side of the central spar 1 on which the opening 4 of the C-shaped cross section is located. Each rung 2 is welded to both edges of the opening 4, whereby the central spar 1 has a similar stability as if it were made of a box profile (closed cross section).
  • the rungs 2 are usefully angled in the middle towards the central strut 1, for example by 4 °.
  • the rungs 2 are provided in the usual way with an anti-slip device, for example with a profile 7 on the top.
  • the vertical ladder is primarily used to climb concrete towers, steel and lattice masts and generally masonry. For this purpose, it is attached to these structures 10 at regular intervals by means of mounting brackets 3. For the fastening assembly of the vertical ladder to the structure 10, it is important that the work required is as small as possible, i.e. that above all the greatest possible distance between the mounting bracket 3 is permissible. The workload for connecting the bracket 3 to the vertical ladder should also be as low as possible.
  • the central spar 1 is expediently screwed onto the mounting brackets 3 by means of hammer head screws 5.
  • the hammer head screws 5 are inserted with their head through the opening 4 of the central spar 1, rotated 90 ° in a known manner and then inserted through corresponding bores in the mounting brackets 3 and tightened by screwing on a nut.
  • the vertical ladder is attached to the structure 10 such that the opening 4 faces the structure 10.
  • the vertical ladder can also be equipped with a fall protection.
  • a rail 6, which may have a similar profile to the central spar 1, is screwed onto the central spar 1 such that the opening 8 of the C-shaped profile of the rail 6 and the opening 4 of the central spar 1 face away from one another.
  • the opening 8 of the rail 6 thus faces the person climbing the ladder.
  • a climbing protection device as is known from DE-A-1 961 757, can be guided in the rail 6.
  • the rail 6 has latching lugs 9 as stop surfaces for the pawl nose of the slide of the climbing protection device, which lugs are half-pressed open from behind.
  • the central stringer consists of hot-dip galvanized steel ST 37 with a thickness of 3 mm and a width of 50 mm and a depth of 32 mm.
  • the width of the opening 4 is 24 mm.
  • the rungs 2 have a width of 375 mm and are welded to the central strut 1 at a distance of 280 mm. In such a central spar 1, a distance of 2.8 m is sufficient for the mounting bracket 3.
  • the vertical ladder is made up of sections of a maximum length of 4.48 m.
  • the rail 6 is additionally screwed onto the central strut 1.
  • the profile 6 of the rail 6 has dimensions similar to that of the central strut 1, but consists of the light metal alloy ALMGSI 0.5 with a wall thickness of 4 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
EP88107313A 1987-05-07 1988-05-06 Echelle Withdrawn EP0290034A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8706588U DE8706588U1 (de) 1987-05-07 1987-05-07 Steigleiter
DE8706588U 1987-05-07

Publications (2)

Publication Number Publication Date
EP0290034A2 true EP0290034A2 (fr) 1988-11-09
EP0290034A3 EP0290034A3 (fr) 1989-01-25

Family

ID=6807782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107313A Withdrawn EP0290034A3 (fr) 1987-05-07 1988-05-06 Echelle

Country Status (2)

Country Link
EP (1) EP0290034A3 (fr)
DE (1) DE8706588U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003692A1 (fr) * 1992-07-31 1994-02-17 Söll Gmbh Dispositif de fixation d'un element de construction en forme de rail sur une corniere de support
WO1994003694A1 (fr) * 1992-07-31 1994-02-17 Söll Gmbh Etrier servant a fixer des elements de construction en forme de rail sur des cornieres au moyen de boulons de montee existants
EP1522673A1 (fr) * 2003-10-10 2005-04-13 New Technelec S.A. Echelle à montant central

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701076C1 (de) * 1997-01-15 1998-07-02 Fahrleitungsbau Gmbh Transportable Steigschutzleiter mit Steigsperre
ITBS20110091A1 (it) * 2011-06-22 2012-12-23 Si Al S R L Scala anticaduta e relativo metodo di produzione

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1961757A1 (de) * 1969-12-09 1971-06-24 Karl Soell Fa Steigschutzvorrichtung fuer Leitern
FR2343884A1 (fr) * 1976-03-09 1977-10-07 Soell Ind Schmiede Echelle metallique comportant un mat central
EP0214069A1 (fr) * 1985-07-23 1987-03-11 Aluminium Pechiney Echelle de mat

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388983A (en) * 1982-01-25 1983-06-21 International Telephone And Telegraph Corporation Lightweight ladder
DE3440549A1 (de) * 1984-11-07 1986-05-15 Fahrleitungsbau Gmbh, 4300 Essen Steigschutzleiter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1961757A1 (de) * 1969-12-09 1971-06-24 Karl Soell Fa Steigschutzvorrichtung fuer Leitern
FR2343884A1 (fr) * 1976-03-09 1977-10-07 Soell Ind Schmiede Echelle metallique comportant un mat central
EP0214069A1 (fr) * 1985-07-23 1987-03-11 Aluminium Pechiney Echelle de mat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003692A1 (fr) * 1992-07-31 1994-02-17 Söll Gmbh Dispositif de fixation d'un element de construction en forme de rail sur une corniere de support
WO1994003694A1 (fr) * 1992-07-31 1994-02-17 Söll Gmbh Etrier servant a fixer des elements de construction en forme de rail sur des cornieres au moyen de boulons de montee existants
WO1994003693A1 (fr) * 1992-07-31 1994-02-17 Söll Gmbh Dispositif de fixation d'un element de construction en forme de rail sur un systeme de contres-fiches diagonales
EP1522673A1 (fr) * 2003-10-10 2005-04-13 New Technelec S.A. Echelle à montant central

Also Published As

Publication number Publication date
DE8706588U1 (de) 1987-08-13
EP0290034A3 (fr) 1989-01-25

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