EP3431700A1 - Protection contre le basculement pour échelles - Google Patents

Protection contre le basculement pour échelles Download PDF

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Publication number
EP3431700A1
EP3431700A1 EP18179468.6A EP18179468A EP3431700A1 EP 3431700 A1 EP3431700 A1 EP 3431700A1 EP 18179468 A EP18179468 A EP 18179468A EP 3431700 A1 EP3431700 A1 EP 3431700A1
Authority
EP
European Patent Office
Prior art keywords
spar
pivot
arm
pivot bearing
cantilever arm
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
EP18179468.6A
Other languages
German (de)
English (en)
Other versions
EP3431700B1 (fr
Inventor
Martin Boos
Volker Büchele
Reinhard Dentler
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.)
Hymer Leichtmetallbau GmbH and Co KG
Original Assignee
Hymer Leichtmetallbau GmbH and Co KG
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 Hymer Leichtmetallbau GmbH and Co KG filed Critical Hymer Leichtmetallbau GmbH and Co KG
Publication of EP3431700A1 publication Critical patent/EP3431700A1/fr
Application granted granted Critical
Publication of EP3431700B1 publication Critical patent/EP3431700B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/423—Ladder stabilising struts
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/44—Means for mounting ladders on uneven ground
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/46—Non-skid equipment

Definitions

  • the invention relates to a tilt protection for ladders, in particular for berthing, in the form of a stand widening according to the preamble of claim 1.
  • ladder is understood to mean ladders in the form of ladders, sliding or stepladders or multipurpose ladders.
  • An anti-tip device of the type mentioned is as a fork-shaped support bracket on a stepladder after the subject of the DE 76 20 451 U1 known. Disadvantage of this arrangement is that the fork-shaped support arm is placed in the transport position on the inside of the spars, which is associated with the disadvantage of increasing the transport dimension. Another disadvantage is that the anti-tip device can not be used either on the left or the right side of the ladder rail used. Therefore, this does not allow the use as a stepladder in narrow staircases, where - depending on the application - the anti-tip device should only be activated on one side.
  • the invention is therefore based on the object, a tilt protection for a ladder, in particular a laying ladder after the DE 76 20 451 U1 , so educate, that the anti-tip device does not significantly increase the transport dimensions of the laying ladder.
  • the object is that the anti-tip device is as easy as possible to use, works reliably and provides a stable Standverbreiterung at a landing ladder, which can be used either on the right or the left or on both sides of the spar.
  • the invention is characterized by the technical teaching of claim 1.
  • a feature of the invention is that the stand broadening according to the invention of the ladder is designed as a multi-articulated folding boom.
  • the folding boom consists of a single cantilever arm, which is inclined Angle with respect to the Holmlteilsseite obliquely outward over the clear dimension of the two mutually parallel spars is swung out.
  • the spars are already conically exposed at the ends of the bars and form a first conductor broadening.
  • the folding boom according to the invention consists of the one pivotally mounted on the respective spar outer side cantilever arm, which is held on a plurality of pivot bearings and intermediate pivot arms arranged pivotably on the respective Holmau touchseite.
  • the folding boom according to the invention can be folded out, if necessary, only on one side or on the other outside of the spar.
  • the ladder can also be displayed on narrow stairs or in limited working spaces, because the one-sided swiveling capability of the folding boom makes it possible, e.g. also the operation of a ladder in narrow stairwells.
  • a particular advantage is when the cantilever arm consists of an aluminum hollows profile, because at low weight a high bending stiffness and breaking strength is ensured.
  • the cantilever arm consists of an aluminum flat profile or of a flat or hollow profiled plastic material.
  • the folding boom is pivotally attached via a four-joint arrangement to the respective Holmau type of Holmes the laying ladder and is pivotable in the rest position in a pivoted position, so that in the rest position of the boom parallel to the outside abuts on the respective spar side of the laying ladder.
  • the boom arm according to the invention is height adjustable and lockable attached to the outside of the respective spar of the ladder.
  • a locking device which consists of a spar externally mounted retaining clip, which receives at least one pivot arm of the four-joint arrangement of the folding boom and clamps there.
  • the main pivot bearing of the folding boom which is attached to the spar side at the highest point, is formed lockable.
  • a clamping screw can be used, which rotatably designed with a corresponding control knob, the bearing to allow a locking of the four-joint arrangement.
  • Such a lock can be set up both in the rest position and in the working position of the folding boom.
  • FIGS. 1 and 2 is a special form of a conductor 1 is shown, which is formed in the embodiment shown as a multi-purpose articulated conductor 2, which allows it with a central pivot joint 3, that the two conductor parts can be folded in the central region.
  • the invention is not limited to such a special multi-purpose articulated ladder 2.
  • All ladders and all other ladder types mentioned in the introduction can be used, which are suitable for being placed on a support surface with the lower side of the spar and for contacting the upper side of the spar on fixed contact surfaces.
  • the conductor shown already has a conductor broadening 4 formed by the flared spars. Additional stiffening struts 26 may also be provided between the holm inner side of the spars 5, 6 and the lowermost shoot 9 in the area of the conductor widening 4.
  • the conductor broadening 4 is improved by the folding boom 8 according to the invention as an additional anti-tilt device, whereby an additional, widened support of the ladder is given.
  • FIGS. 1 and 2 therefore does not limit the scope of the present invention.
  • the anti-tilt device according to the invention can also be used in the type of stand broadening shown on such ladders, which have no endhol discoverede conductor broadening 4.
  • the Standverbreiterung invention 7 consists of a folding boom 8, which in the right side of FIG. 2 unfolded in working position and in the left side of the FIG. 2 in the resting position as a folding boom 8 'to the spar side of the left spar 6 is folded up.
  • the ladder consists in principle of two mutually parallel bars 5, 6, which are interconnected by sprouts 9, wherein in the particular embodiment shown, the joint conductor 2 still end-side conductor extensions 4, which may also be omitted.
  • FIG. 3 on the right side, the working position of the folding boom 8 according to the invention is shown, which consists in principle of an upper stalk-resistant pivot bearing 10, which attaches to the one end of a pivotable pivot arm 11, which preferably held in a holm kiten retaining clip 20, or there is Sharingsbar.
  • the lower end of the pivot arm 11 is formed by a movable pivot bearing 12, which therefore only loosely applied to the outside of the spar Holm 5, 6.
  • a boom 13 On the pivot bearing 12, the upper end of a boom 13 continues, which carries at its lower end a foot 14 which is suitable for support on a support surface.
  • a pivot bearing 17 is arranged, on which the one end of a pivot arm 15 ana, the other end is received in a stalk-resistant pivot bearing 16.
  • the rest position is locked by a mounted on the outside of the spar, elastomeric trained Garklip 20, which is designed as outwardly open U-profile and the first pivot arm 11 receives by clamping.
  • FIG. 4 To achieve the rest position based on the work situation shows the FIG. 4 in that first the first pivoting arm 11 is pulled out of its retaining clip 20 and swiveled upwards in the direction of the arrow 21.
  • the cantilever arm moves into its position 13 '.
  • the entire four-joint arrangement is pivoted in the direction of arrow 21 up until the rest position as shown in FIG. 4 (left side) was reached.
  • FIG. 4 shows as an exemplary embodiment that the height position of the extension arm 13 and thereby the support length in the arrow directions 23 is characterized adjustable and detectable that the pivot bearing 12 is formed as a pin which engages through a slot 22 which is incorporated in the pivot arm 11.
  • the height adjustment of the cantilever arm 13 can be continuously adjusted and determined via the support surface 25.
  • FIG. 5 shows the side view of a spar 5, 6 in the raised position of rest.
  • the same parts are provided with the same reference numerals.
  • the two pivot arms 11 and 15 are fork-shaped and the ends of the forks take between them the holmfesten pivot bearings 10 and 16 and also the loose pivot bearings 12 and 17. This results in a particularly stable and torsion-secured mounting of the pivot arms 11, 13, 15. These can thus accommodate high support forces and torque without bending.
  • FIG. 6 which represents the working position of the folding boom 8.
  • the pivot arm 11, 15 are formed as bent forks to allow the cantilever arm 13 can be accommodated to save space in the space between the holm thesisen pivot bearings 10,16, without standing out about the pivot arms 11, 15.
  • the shaft-fixed pivot bearings 10, 16 are according to FIG. 5 and 6 designed as a U-shaped profiled bracket 28.
  • the effect of Standverbreiterung is achieved in that in the working position, the upper end of the boom 13 is pressed in the region of the pivot bearing 12 under load against the outside of the spar 5,6 and thereby a stable support against possible tipping is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
EP18179468.6A 2017-07-17 2018-06-25 Protection contre le basculement pour échelles Active EP3431700B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017115996.7A DE102017115996A1 (de) 2017-07-17 2017-07-17 Kippsicherung für Leitern

Publications (2)

Publication Number Publication Date
EP3431700A1 true EP3431700A1 (fr) 2019-01-23
EP3431700B1 EP3431700B1 (fr) 2020-09-23

Family

ID=62778741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18179468.6A Active EP3431700B1 (fr) 2017-07-17 2018-06-25 Protection contre le basculement pour échelles

Country Status (2)

Country Link
EP (1) EP3431700B1 (fr)
DE (1) DE102017115996A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11391089B2 (en) * 2018-10-24 2022-07-19 Tricam Industries, Inc. Stepladder folding leg

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200172237Y1 (ko) * 1999-10-07 2000-03-15 이원명 사다리의 안전 지지구조
US7017711B1 (en) * 2002-10-23 2006-03-28 Shaikh Mehboob Ali Method for extending the leg of a ladder and apparatus therefor
JP2013177784A (ja) * 2012-02-29 2013-09-09 Alinco Inc 高所作業装置におけるアウトリガーの開閉装置
CN204225755U (zh) * 2014-10-21 2015-03-25 东莞威信运动用品有限公司 地脚支撑组件
US9309718B1 (en) * 2010-08-05 2016-04-12 Martin Sinclair Matthew Stable stepladder with utility tray

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1385319A (en) * 1920-04-14 1921-07-19 Martin F Enke Ladder
GB1368001A (en) * 1972-05-12 1974-09-25 Henderson D S Ladders
DE7620451U1 (de) 1976-06-28 1976-10-28 Dehner, Karl, 7980 Ravensburg Stehleiter, insbesondere fuer buschobstanlagen
DE202014100469U1 (de) 2014-02-04 2014-02-18 Lorenz Hasenbach Gmbh & Co. Kg Kippsicherung für Leitern
DE102015122789A1 (de) 2015-12-23 2017-06-29 Mauderer Alutechnik Gmbh Kippsicherung für Leitern

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200172237Y1 (ko) * 1999-10-07 2000-03-15 이원명 사다리의 안전 지지구조
US7017711B1 (en) * 2002-10-23 2006-03-28 Shaikh Mehboob Ali Method for extending the leg of a ladder and apparatus therefor
US9309718B1 (en) * 2010-08-05 2016-04-12 Martin Sinclair Matthew Stable stepladder with utility tray
JP2013177784A (ja) * 2012-02-29 2013-09-09 Alinco Inc 高所作業装置におけるアウトリガーの開閉装置
CN204225755U (zh) * 2014-10-21 2015-03-25 东莞威信运动用品有限公司 地脚支撑组件

Also Published As

Publication number Publication date
EP3431700B1 (fr) 2020-09-23
DE102017115996A1 (de) 2019-01-17

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