EP0485489B1 - Echelle a dispositif anti-chute et a condamnation d'acces - Google Patents

Echelle a dispositif anti-chute et a condamnation d'acces Download PDF

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Publication number
EP0485489B1
EP0485489B1 EP90912503A EP90912503A EP0485489B1 EP 0485489 B1 EP0485489 B1 EP 0485489B1 EP 90912503 A EP90912503 A EP 90912503A EP 90912503 A EP90912503 A EP 90912503A EP 0485489 B1 EP0485489 B1 EP 0485489B1
Authority
EP
European Patent Office
Prior art keywords
panel
ladder
locking
linkage
pivoted
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
EP90912503A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0485489A1 (fr
Inventor
Charles 49 Avenue De Meilbourg Coutier
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.)
Charles Coutier SAS
Original Assignee
Charles Coutier SAS
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Filing date
Publication date
Application filed by Charles Coutier SAS filed Critical Charles Coutier SAS
Publication of EP0485489A1 publication Critical patent/EP0485489A1/fr
Application granted granted Critical
Publication of EP0485489B1 publication Critical patent/EP0485489B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/006Devices for preventing access
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/18Devices for preventing persons from falling
    • E06C7/186Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • E06C7/187Guiding rail
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C9/00Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/02Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted

Definitions

  • Ladders with fall prevention device are safety ladders comprising, in the middle of the bars, an insurance support generally constituted by a longitudinal rail along which a slide can circulate connected by a fairly short link to a harness coated by the user.
  • the slider is designed so that if it starts to fall, it locks into the rail and retains the user.
  • ladders of this type can be used with special access conditions, for example because they lead to dangerous areas or prohibited to unauthorized persons. It is therefore advisable to equip them with means of blocking their access which can only be lifted by authorized persons having the appropriate body to carry out this lifting (key, code, card, etc.).
  • One of these ways of most commonly used locking is a panel hinged to one side of the ladder and locked folded down on the bars as illustrated by document DE-U-8 809 352.
  • the means of conviction or the means capable of forcing the security of the individual must not be an obstacle to the course of the ladder in the opposite direction, which must be as free as possible, also for reasons of security. Indeed, the ladder in question can constitute an emergency exit or serve as such.
  • the present invention intends to provide a simple solution making it possible to satisfy these requirements in the form of a device, the different variants of which make it possible to provide an answer adapted to the different degrees of security or of access prohibition which one chooses to satisfy. or which result from the application of current regulations.
  • the subject of the invention is a rail security ladder for receiving a slider connected to a harness, comprising at least one panel articulated by one of its longitudinal sides to a support connected laterally. on the ladder and means for locking the panel in the folded position on the ladder, in which means for operating said locking means have a control member disposed along the lower part of the rail under the panel and actuated by the harness slide as it passes through the part of the rail fitted with the control member.
  • the panel includes elastic return means tending to move it away from the ladder around its articulation.
  • the ladder comprises additional locking means of the panel in the folded position with manual actuation at least for their release.
  • the ladder comprises a second panel articulated around a fixed lateral axis parallel to an upright of the ladder and on the same side as the articulation axis of the first panel, movable between a folded position on the ladder in which it covers the first panel and an open position in which it discovers the ladder and the first panel, locking means, with manual control at least for their release, being provided to keep the second panel folded down on the ladder.
  • the ladder comprises return means for the second panel in the folded position, the effect of which is greater than that of the abovementioned return means tending to separate the first panel from the ladder.
  • the means for locking the second panel in these two positions can advantageously consist of the dead bolt of a single lock secured to the second panel, cooperating with one or the other of two fixed strikes provided in positions adequate to receive this bolt.
  • This bolt can be a U-bolt without a skew surface.
  • the first panel is articulated on the second panel around an axis close to the fixed lateral axis so as to move with the second panel along a trajectory whose projection on the plane of the scale n ' is not zero
  • the means for locking the first panel in the folded position being constituted by at least two fingers carried by the first panel, one of them being engaged behind a fixed stop when the two panels are folded down on the ladder, the other being engaged behind another fixed stop when only the first panel is folded down, the second panel being removed from the ladder, the opening of the second panel freeing the first finger from its stop and engaging the second finger behind the corresponding stop.
  • the second finger is in the form of a U-bolt coupled to the control member actuated by the passage of the slide, while the locking means of the second panel are arranged between the first and the second panel, and that the first locking finger is constituted by the turn-around bolt of a lock coupled to a linkage extending substantially vertically behind the front of the first panel, up to the vicinity of the upper edge of the second panel when it is folded down with the first panel on the ladder, where this linkage is connected to a bolt actuation pedal in the direction of release of the finger.
  • a ladder 1 provided with a central safety rail 2 extending perpendicular to the rungs 3, in the middle part of the latter, all along the ladder.
  • this rail starts at a certain height from the ground A to facilitate the introduction of a not shown ououlisseau connected to a harness, also not shown, that the user of the ladder must put on .
  • the user first puts on the harness and as the slider is relatively close to the harness, the link which joins them being relatively short (of the order of 15 to 20 centimeters), the place of introduction of the slider in the rail is approximately at the height of a man's chest to avoid contortions which would be a disadvantage with regard to the incentive to use the safety harness.
  • the invention provides this known device with means making it practically compulsory to wear a harness to access the bars of the ladder other than the first few.
  • a first simple embodiment of these means is shown in Figure 1. They consist of a door or a panel 4 hinged to a support connected to one of the uprights 1a of the ladder around hinges or the like.
  • the articulation will be obtained by spring hinges 5 whose effect tends to separate the panel 4 from the ladder.
  • the panel 4 is at an altitude H at least equal to the height of a man, so that he can deviate from the scale without risk for the user to be struck. Folded down on the ladder, the panel is held against the effect of spring hinges by a stop 6 engaged behind a locking finger 7 which can be retracted.
  • This finger can be constituted by a small bar sliding in vertical guides 8a and 8b, against the effect of a spring tending to keep it engaged in the two guides, under the action of a traction cable.
  • This cable is connected to an actuation mechanism schematically represented under the reference 10. It may be, inter alia other embodiments, (see FIG. 3) of a bent lever 11, articulated around a fixed axis 12 , one of the ends of the lever projecting inside the rail 2, so as to be moved when the slide passes through the rail. This displacement resulting in a rotation of the lever 11 around its axis 12, the other end of the lever which is coupled to the cable 9 exerting a traction on the latter when the slide is maneuvered in the upward direction.
  • a lock 13, 14 for locking the panel 4 in the folded position can be fitted, in correspondence on the panel and a fixed part of the ladder. . Access to the ladder is therefore only possible for authorized personnel with the key to the lock. It is understood that the lock will, in this simple embodiment, at the lower level of the panel to be accessible by the user before he has introduced the slide in the rail. This last operation will release the panel.
  • This first embodiment may be suitable for satisfying a certain requirement of conviction which, in certain cases, may not be sufficient. Indeed, when the ladder is used, the panel, by the hinges, remains separated from the bars, so that the ladder is accessible not only to unauthorized people, but also to people who are not in a security situation.
  • FIG. 4 relates to an embodiment which is a solution to this question.
  • the panel 4 is urged in the direction of its distance from the scale around the articulation 5.
  • a second panel 15 comes to cover the panel 4, around a lateral articulation 16, by example along the upright of the ladder carrying the articulation 5.
  • the panel 15 is, however, biased in the direction of its folding down on the ladder under a force greater than that, contrary which tends to spread the panel 4.
  • the elastic mechanism for folding the panel 15 possibly includes, in a known manner, a delay and timer device, which, after the user has removed this panel, gives him time to place the slide in the rail and to start climbing the rungs before falling back onto the ladder, carrying with it the panel 4.
  • This panel 15 has a lock 17 which can be of different types, depending on the desired locking.
  • this lock can it have only one dead bolt 18 which can be operated by a key (or an operating square), on both sides of the panel.
  • the panel can be retained in the folded position when this bolt cooperates with a fixed strike 19, and in the separated position, against its return mechanism, by another fixed strike not shown capable of receiving this same bolt.
  • the lock can also include a half-turn bolt 20, so as to automatically lock at the end of its return to the ladder 1.
  • the panel 15 can advantageously be provided with at least one receptacle 15a, itself condammable, to contain the personal protective equipment (slide, harness 3)
  • the stop 6 of the panel 4 must also be produced in the form of a bolt turn, in order to be able to retract behind the finger 7 when the panel 4 folds down driven by the panel 15 Generally, this form of stop is desired for the rapid replacement of the panel 4.
  • FIGS. 5 and 6 there is shown, schematically and seen from above a particular embodiment of the embodiment of Figure 4. Indeed a problem is not solved by the device according to Figure 4: it is the crossing of free or least hindered way possible of the access security devices (panel 4) and access locks (panel 15). We understand that after crossing these devices, the panels fold down and lock on the ladder so as not to leave this ladder accessible to all. But when the user descends, it is impossible for him to cross these locked panels on the ladder.
  • the solution to this problem, illustrated by FIGS. 5 and 6, comprises elements already described with the same references. It is noted that the panel 4 is articulated at 5 on the panel 15, in the vicinity of the articulation 16.
  • the panel has two locking fingers 21a and 21b, drawn in the figures at the level of a lateral edge 2a and 2b that has the rail 2. Furthermore, the panel 15 is held in the folded position by a latch (or a lock 22), disposed between the panel 15 and the panel 4.
  • FIG. 5 it can be seen that the panel 4 is retained on the scale by cooperation of the finger 21a and the wing 2a of the rail 2.
  • the panel 15 is unlocked and can pivot around its articulation 16 to move into its position in FIG. 6.
  • the articulation 5 describes at the same time substantially a quarter of a circle.
  • the relative arrangement of axes 5 and 16 is such that the projection of the trajectory of axis 5 on the plane of the scale is not zero.
  • this axis drives the panel 4 to the left, without it being able to deviate from the scale, because the length of the fingers 21a and 21b is such that the finger 21b has been housed under the wing 2b of the rail before the finger 21a has been able to leave the wing 2a.
  • the panel 15 is therefore spaced apart and allows the user to introduce the strap of his harness into the rail 2, which comprises the device 10 for controlling the release of the retaining stop of the panel 4.
  • the finger 21b is produced, like the stop 6, in the form of a U-bolt, while the wing 2b of the rail is in fact constituted like the finger 7 of FIG. 1 (retractable keeper).
  • the panel 15 being separated, the roll introduced in the rail, the release of the panel 4 is then possible, because moreover, the finger 21a is released from the wing 2a due to the translation of the panel 4 to the left of the figure , during rotation of the panel 15.
  • the panel 4 pivots around the joint 5 above the user's head, under the effect of the hinges spring and is biased against the inner face of the panel 15 by locking on the latter by means of the bolt half-turn of the lock 22 for coupling the two panels to one another (position marked in phantom in Figure 6 ).
  • the locking finger 21b passes beyond the wing 2b of the rail while that the finger 21a meets the wing 2a of this rail.
  • the finger 21a is also shaped like a half-turn bolt, that is to say which can be erased when the panels are folded down on the ladder. The lock is then in place and the next user is forced, first to operate the lock 22 to unlock the access, then to introduce the harness slide to free the ladder from the grip of the panel 4.
  • FIG 7 there is shown schematically actuating means of the finger 21a shaped as a U-bolt.
  • This finger is guided in horizontal sliding in a guide integral with the panel 4, not shown, so as to be able to pass the wing 2a of the rail 2.
  • a spring 23 recalls this finger in its extended position in the direction of the rail.
  • Part of the bolt has a lumen with two branches: an oblique branch 24, the upper part of which coincides with one of the ends of a horizontal branch 25.
  • a vertical linkage 26 slides along the panel 4 against, possibly, the effect of a spring of reminder not shown, which tends to raise the linkage, the latter carrying a finger 27 engaged in the slot 24, 25 above.
  • a maneuver of the linkage downwards causes a displacement to the left of the bolt 21a, thanks to the cooperation of the finger 27 with the light 24.
  • This movement releases the bolt of the wing 2a from the rail 2.
  • the assembly of the two panels is thus completely unlocked from the ladder and can turn around the articulation 16.
  • This linkage can therefore extend to the top of the panel 4, therefore to the top of the panel 15 and be equipped with a foot pedal. sinking at this level.
  • There has thus been produced a means of unlocking the entire lock which can be actuated by the foot of a user descending the ladder.
  • the branch 25 of the light allows the bolt 21a to retract in contact with the wing 2a of the rail 2, during the folding down of all the panels on the ladder, without setting in motion the whole of the linkage which can be heavy.
  • FIG. 8 there is shown another embodiment of the control of the opening of the whole of the condemnation by means of a linkage actuated by the user descending the ladder.
  • This embodiment is more robust and more resistant to burglary attempts than the embodiment of FIG. 7.
  • the panel 15 is locked in the folded position no longer on the panel 4, as before, but on a structure fixed carrying a strike 19, by means of a half-turn bolt 20.
  • This bolt can be actuated normally by a key and by a linkage 26, which by the finger 27 cooperating with the branch 24 of the light 25, causes the retraction of the bolt when it is moved down.
  • a lever 40 articulated to the linkage 26 by one of its ends and to the panel 15 by its middle part, makes it possible to transmit the reverse movement of that of the linkage to a pusher 41 which cooperates with the bolt 21a locking the panel 4 on the rail 2.
  • the pusher 41 carries a lateral finger 42 which is housed in a V-shaped opening 43, so that the elevation of the finger 42 causes the bolt 21a to retract.
  • the bolt is slidably mounted relative to the panel 4 in a structure which is not shown. We therefore understand that the downward translation of the linkage 26 causes the simultaneous retraction of the two bolts 21a and 20.
  • the linkage is slidably mounted relative to the panel 15 and can rotate with it around the axis 16.
  • FIG. 9 A particular embodiment of this pedal is shown in FIG. 9.
  • the linkage 26 is slidably mounted on the panel 4, and carries, articulated at its end, a rod 28 of a pedal 29, the upper part of which is shaped sole 30.
  • This pedal is inclined on the rod 28, so that the sole 30 is sloping towards the scale and downwards, by a spring 31 which presses it against a stop 32 of the panel 4.
  • the panel 15 has an upper return 15b in the direction of the ladder, which is provided with a notch 33 opening into an elliptical opening 34.
  • the section of this opening corresponds to the section through the plane of the return 15b of the pedal rod part 28a, cylindrical, of larger diameter than the rod part 28 for coupling the pedal to the linkage 26.
  • the base of this rod part 28a constitutes a shoulder 35 which projects above the edges of the notch 33, when the linkage is in high position and when the pedal is depressed on the stop 32. It is therefore Impossible to depress the pedal without first pushing it outwards, that is to say, moving it away from the ladder. The inclination of the sole naturally leads the user to do so.
  • the rod portion 28a of large diameter is opposite the orifice 34, the insertion is then possible and the bolt 21a escapes from the wing of the rail 2.
  • the movement of the foot started to depress the pedal (movement towards the rear), is extended to rotate all of the panels around the articulation 16.
  • the timed return means of the panel 15 retain the assembly the time necessary for the user to descend the last bars of the ladder .
  • the insurance device to which the user is connected is always described as being a rail. It goes without saying, however, that the invention is not limited to this embodiment, and that any other insurance device may be suitable.
  • a heald consisting of a simple metal bar on which the slide can slide, or even a cable cooperating with a suitable slide, could enter the device according to the invention.
  • the unlocking control unit panel will be installed and adapted to the particular slide along these means, in their lower part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Programmable Controllers (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
EP90912503A 1989-08-04 1990-08-02 Echelle a dispositif anti-chute et a condamnation d'acces Expired - Lifetime EP0485489B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8910539 1989-08-04
FR8910539A FR2650623B1 (fr) 1989-08-04 1989-08-04 Echelle a dispositif anti-chute et a condamnation d'acces
PCT/FR1990/000584 WO1991002136A1 (fr) 1989-08-04 1990-08-02 Echelle a dispositif anti-chute et a condamnation d'acces

Publications (2)

Publication Number Publication Date
EP0485489A1 EP0485489A1 (fr) 1992-05-20
EP0485489B1 true EP0485489B1 (fr) 1994-07-06

Family

ID=9384487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90912503A Expired - Lifetime EP0485489B1 (fr) 1989-08-04 1990-08-02 Echelle a dispositif anti-chute et a condamnation d'acces

Country Status (6)

Country Link
EP (1) EP0485489B1 (es)
AT (1) ATE108242T1 (es)
DE (1) DE69010501T2 (es)
ES (1) ES2058930T3 (es)
FR (1) FR2650623B1 (es)
WO (1) WO1991002136A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008005175U1 (de) 2008-04-14 2009-05-28 Greifzug Hebezeugbau Gmbh Steigschutzleiter mit Fallschutzeinrichtung und Zugangssperre hierfür

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760484B1 (fr) * 1997-03-07 2000-06-16 Coutier Ind Dispositif de condamnation pour zones a acces controle
GB2354791A (en) * 1999-09-14 2001-04-04 Darren Hutchinson A ladder safety device
NL1022406C2 (nl) * 2003-01-16 2004-07-19 Pieter Van Dijk Ladder.
IT1397944B1 (it) * 2009-02-26 2013-02-04 Bi & S S P A Carter antisalita di chiusura per scale con guida di sicurezza per cursore anticaduta, scala comprendente detto carter antisalita e meccanismo di apertura/chiusura
DE102021119118B4 (de) 2021-07-23 2024-07-04 Martin Mayr Aufstiegssperre für eine Leiter
CN115258060A (zh) * 2022-08-19 2022-11-01 上海外高桥造船有限公司 防误入爬梯、船舶及施工设施

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968857A (en) * 1975-02-20 1976-07-13 Bryan Robin R Device for preventing unauthorized access to permanent ladders
FR2558890B1 (fr) * 1984-01-27 1986-06-20 Coutier Charles Ets Dispositif pour condamner l'acces aux echelles a crinoline
DE8809352U1 (de) * 1988-07-22 1988-09-08 Lorenz Hasenbach GmbH & Co KG, 6277 Bad Camberg Steigleiter
FR2635357B1 (fr) * 1988-08-09 1990-10-26 Coutier Ind Dispositif de condamnation de l'acces inferieur d'une echelle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008005175U1 (de) 2008-04-14 2009-05-28 Greifzug Hebezeugbau Gmbh Steigschutzleiter mit Fallschutzeinrichtung und Zugangssperre hierfür

Also Published As

Publication number Publication date
ATE108242T1 (de) 1994-07-15
DE69010501D1 (de) 1994-08-11
FR2650623A1 (fr) 1991-02-08
FR2650623B1 (fr) 1991-10-31
ES2058930T3 (es) 1994-11-01
EP0485489A1 (fr) 1992-05-20
DE69010501T2 (de) 1995-01-19
WO1991002136A1 (fr) 1991-02-21

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