EP0679794A1 - Betätigungsvorrichtung für eine Ausziehleiter - Google Patents

Betätigungsvorrichtung für eine Ausziehleiter Download PDF

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Publication number
EP0679794A1
EP0679794A1 EP95460018A EP95460018A EP0679794A1 EP 0679794 A1 EP0679794 A1 EP 0679794A1 EP 95460018 A EP95460018 A EP 95460018A EP 95460018 A EP95460018 A EP 95460018A EP 0679794 A1 EP0679794 A1 EP 0679794A1
Authority
EP
European Patent Office
Prior art keywords
ladder
pivot
cradle
vehicle
slide
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
EP95460018A
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English (en)
French (fr)
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EP0679794B1 (de
Inventor
Patrick Jacobee
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0679794A1 publication Critical patent/EP0679794A1/de
Application granted granted Critical
Publication of EP0679794B1 publication Critical patent/EP0679794B1/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
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic

Definitions

  • the present invention relates to a device for maneuvering a sliding ladder, a device more particularly intended to be mounted on a vehicle capable of transporting such large scales: utility trucks or vans, in particular firefighters.
  • the present invention therefore consists of a device providing a global solution to this problem, in that it makes it possible to minimize and therefore very clearly facilitate human intervention for maneuvering sliding ladders of large dimension, and in that it allows also a much faster installation of these scales, which is of paramount importance in the context of firefighters' activities.
  • the cradle can be pivoted about a vertical axis by 180 ° to orient the ladder, around a first transverse horizontal axis to tilt the scale, and around a second horizontal axis orthogonal to the first to allow the transverse verticality of the scale to be adjusted.
  • the low rigid connection of adjustable length advantageously comprises a stirrup fixed on either side of the base plane of the ladder, for example at the level of a bar, as well as a telescopic median arm provided with a locking means progressive or brake to adjust its length.
  • said pivot is slidably mounted on a longitudinal rail fixed to the roof of the vehicle and protruding at the rear, so as to be movable together with the ladder and its cradle between a position rear of service and a position before transport.
  • Fig. 1 illustrates a device according to the invention mounted on a fire truck 1. It is a device intended not only for the operation of a sliding ladder, but which also serves to place it and secure it in transport position on the vehicle roof 1.
  • the device comprises a metal beam or rail 2 mounted longitudinally on the roof of the vehicle 1, for example centrally. It exceeds at the rear within the limits imposed by road traffic regulations. In practice, the part protruding is about one meter long. If necessary, it is provided with reinforcing arms 24, FIG. 1.
  • the rail 2, on which a carriage 3 is mounted is advantageously an H-shaped section whose core 20 is vertical, and which therefore has two lower and upper wings, respectively 21 and 22, as shown better in FIG. 3.
  • the carriage 3 is mounted on the rail 2 so as to have only one degree of freedom to slide along it, between the rear end E and a limit limit before the end of travel L located on the roof of the vehicle 1, Fig. 1.
  • the body of the carriage 3 has an inverted U profile to cover the rail: it comprises a horizontal upper plate 30 and two vertical side walls 31. It is held in place and retained on the rail 2 by two horizontal wings 32 directed internally from the side walls 31, which enclose with these and the plate 30 the upper wing 22 of the rail 2.
  • the carriage 3 rolls on the lower wing 21 of the rail 2 by l 'through two front and rear pairs of rollers 33.
  • a lock allows its blocking in its most remote position.
  • the lock shown in the drawings is a tilting hook 34 articulated around a transverse axis on the plate 30, which hangs by gravity around the rear end of the rail 2.
  • the carriage 3 carries fixed on its plate 30 a tubular part or socket 35 of internal section circular, vertically oriented and open upwards. It is located substantially in the center of the plate 30.
  • the sliding ladder 5 which conventionally comprises three planes including a base plane 50, an intermediate plane 51 and an upper plane 52, is mounted in a cradle 4 appearing in more detail in FIGS. 4 and 5 (for reasons of clarity of the drawing, the cradle 4 has been shown without the scale in Fig. 4).
  • the cradle 4 essentially comprises two sides 40 joined by lower crosspieces 41, to receive the ladder 5 so that the planes 51 and 52 remain maneuverable relative to the base plane 50.
  • the base plane 50 is fixed suspended across the upper part of the cradle 4, the other two planes 51, 52 being suspended under it inside the cradle.
  • the base plane 50 is fixed in the cradle 4 at two rungs, by means of transverse rods 43 passed through these rungs and received and keyed in receiving holes 42 formed in the upper part of each of the sides 40.
  • the cradle 4 further comprises a lower transverse axis 44, FIG. 5, arranged substantially in the middle, by which it is articulated on a part 6.
  • This comprises a horizontal intermediate plate 60 on which is fixed by means of a mount 61 a vertical bearing 62 and under which is fixed a vertical cylindrical tail 63 of circular section.
  • the pin 44 is engaged and retained at its central part in the bearing 62.
  • the bearing 62 is a spherical bearing or equivalent, for example a bearing oscillating.
  • Means may be provided for limiting the oscillation of the axis 44, this means being for example, as shown, a jumper 64 secured to the plate 60 and surrounding the axis 44 near the bearing 62.
  • the cylindrical tail 63 of the part 6 is intended to be received in the socket 35 of the carriage 3 previously described, in which it can rotate freely.
  • a not shown locking means is provided to hold the tail 63 in place in the socket 35.
  • the cradle 4 is then removably carried on the carriage 3 by a Cardan joint: it can pivot longitudinally about its axis transverse 44, pivot transversely due to the possibility of oscillation of the transverse axis 44 in the bearing 62, and rotate around the axis of the bush 35.
  • the device of the invention further comprises, secured to the vehicle 1, an attachment means 7 which is located at a distance under the rear protruding part of the rail 2, carried on an arm parallel to the latter and in the same vertical plane .
  • the attachment means 7 can be carried on the rear drawbar 8 of the vehicle 1. It is thus 50 cm above the ground, approximately, a vertical distance from the order of 2 m separating it from rail 2 which is itself about 2.5 m.
  • the attachment means 7, Figs. 1 and 7, comprises a slide 70 mounted on a slide 80, which is located on top of drawbar 8, over its entire length.
  • the slide 70 is provided with a brake, for example a screw 71, to allow it to be blocked at any point on the slide 80, and, as an attachment element, with a cylindrical tail 72 directed towards the high.
  • the attachment means 7 is intended to receive one end of a rigid connection 9 articulated by its other end to the lower part of the base upright 50 of the ladder 5, which rigid connection 9 has the function of ensuring the retention and the stability of the ladder, both in its transverse plane and in its inclination plane.
  • the rigid connection 9 is shown in plan in FIG. 9. It comprises as longitudinal median element a telescopic arm 90 adjustable in length by means of a screw 91 ensuring tightening between its two parts 90a, 90b.
  • a metallic structure is fixed on the external part 90b of the arm 90, which forms beyond a first end of the latter a stirrup 92.
  • the stirrup 92 comprises a base cross member 93 and two branches 94 parallel to the arm 90, between which the planes 50 to 52 of the scale 5 are received.
  • the fixing is ensured by means of a transverse rod 95 passing through a bar of the base plane 50, and received and keyed in holes at the ends of the branches 94, the link 9 therefore being able to pivot relative to the scale around the rod 95.
  • the second end of the arm 90 that is to say the free end of the part 90a, comprises an attachment ring 96. It is a ball-joint ring or equivalent to allow it to be engaged and keyed quickly and without difficulty on the vertical attachment tail 72 of the means 7, and also to allow the rigid connection 9 to pivot freely around the attachment tail 72.
  • the ladder 5 in the transport position on the roof of the vehicle 1 has its two planes 51, 52 immobilized with respect to its base plane 50 in a conventional manner, that is to say by means of the sound cord development system.
  • the ladder 5 protrudes slightly beyond the rail 2, and the rigid connection 9 hanging under the ladder is immobilized by a quick fixing means 98.
  • the ladder 5 is received in a support, advantageously formed of lateral uprights 100 and rollers 101 mounted idly at the base of these uprights, on which the plane 52 bears. of the scale.
  • the uprights 100 which can be mounted integral with the rail 2, have holes 102 at the base plane 50, to allow the latter to be secured by engagement through a rung of a transverse rod received in these holes and keyed.
  • a means of securing the cradle 4 can also be provided, consisting for example of lateral arms 103 pivotally mounted at their base, and coming to be fixed by their upper end on studs projecting externally on the sides 40.
  • the carriage 3 is against its end of travel stop forward on the rail 2.
  • the first operation is the responsibility of the driver of the vehicle 1 who will have to place the latter adequately with respect to the wall and according to the height at achieve.
  • the vehicle 1 will be placed parallel to the wall, at a distance calculated so that the inclination of the ladder is correct.
  • Fig. 8 illustrates the next step by which the ladder 5 is lowered to the rear of the vehicle 1 after release of the rigid attachment 9 and of the securing means in the transport position, and reversing and locking in the position E on the rail 2 of the carriage 3 loaded with the cradle 4 and the ladder 5.
  • the cradle 4 and the ladder 5 are then pivoted about the axis 44 to descend the base of the ladder to the ground. It will be noted that the longitudinal position of the cradle along the ladder is such that the base of the latter cannot touch the ground. Then, the ladder being erected in a standing position close to the vertical, the link 9 is hung by means of attachment 7.
  • the scale 5 has been pivoted 90 ° around the vertical axis of the socket 35 to be presented facing the wall.
  • the slide 70 of the attachment means 7 on its slide 80 to place the attachment tail 72 and the socket 35 in the same vertical plane normal to the wall and therefore in terms of scale.
  • the arm 90 of the rigid link 9 is reduced to its minimum length to raise the ladder 5 as vertically as possible, after which it is developed to the desired length.
  • the arm locking screw 91 is slightly loosened. It thus acts in braking the extension of the arm 90 and, consequently, in braking the descent of the ladder.
  • Fig. 12 shows the scale 5 pressed against a wall P. Since it is a view in principle, only the essential functional elements of the device according to the invention have been represented, namely the pivot 35, the cradle 4, the attachment means 7 and the rigid connection 9.
  • the ladder 5 is secured to the pivot 35 by means of the cradle 4, and below by means of the rigid connection 9 fixed to the attachment means 7.
  • the device according to the invention makes it possible to further improve the stability of the ladder by increasing the upper bearing force against the wall P. To do this, the ladder 5 is arched as illustrated in the drawing, by pulling on its base outwards according to arrow F, then blocking in length of the arm 90 by means of the screw 91. If necessary, it is possible to provide a ground support for the two uprights of the ladder, using two crutches for taking up level, known per se.
  • Fig. 10 illustrates the case where the terrain adjoining the wall against which the scale 5 is to be supported is not horizontal, but inclined parallel to the wall. Vehicle 1 will then be oriented in the direction of the slope, which will make it possible to advance the slide 70 on the slide 80 in order to regain the alignment of the socket 35, a condition on which the transverse verticality of the scale depends.
  • the device according to the invention has the advantage of grouping together few elements that are easy to install on a van type utility vehicle. Note also that the sliding ladder mounted in the device remains perfectly usable independently of it, since it is immediately separable from the cradle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Harvester Elements (AREA)
EP95460018A 1994-04-18 1995-04-13 Betätigungsvorrichtung für eine Ausziehleiter Expired - Lifetime EP0679794B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9404844A FR2718789B1 (fr) 1994-04-18 1994-04-18 Dispositif de manÓoeuvre d'échelle à coulisse.
FR9404844 1994-04-18

Publications (2)

Publication Number Publication Date
EP0679794A1 true EP0679794A1 (de) 1995-11-02
EP0679794B1 EP0679794B1 (de) 1999-03-31

Family

ID=9462401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95460018A Expired - Lifetime EP0679794B1 (de) 1994-04-18 1995-04-13 Betätigungsvorrichtung für eine Ausziehleiter

Country Status (4)

Country Link
EP (1) EP0679794B1 (de)
AT (1) ATE178386T1 (de)
DE (1) DE69508641D1 (de)
FR (1) FR2718789B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034171A1 (en) * 1995-04-28 1996-10-31 Raufoss Stigen A/S Ladder ramp
FR2763990A1 (fr) * 1997-06-02 1998-12-04 France Elevateur Dispositif elevateur de personnel combinant une echelle standard et un vehicule
DE19719292C2 (de) * 1997-05-07 2000-11-23 Ziegler Albert Gmbh Co Kg Haltevorrichtung für eine Leiteranordnung auf einem Fahrzeugdach
CN113324504A (zh) * 2021-05-28 2021-08-31 徐工消防安全装备有限公司 一种导轨长度检测装置、检测方法及消防车

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667296A (en) * 1950-02-18 1954-01-26 J H Holan Corp Aerial ladder
US3020972A (en) * 1960-03-07 1962-02-13 John A Hockett Combination utility cart and extension ladder
US3556248A (en) * 1969-06-13 1971-01-19 Adolphas E Brown Folding ladder for a working cart
US3621935A (en) * 1969-09-02 1971-11-23 John J Bode Vehicle mounted ladderlike tower
FR2235261A1 (de) * 1973-06-27 1975-01-24 Simon Eng Dudley Ltd
DE2946521A1 (de) * 1979-11-17 1981-05-27 Alois 7091 Birkenzell Schneider Traktor mit hydraulisch betaetigbarem anbaugeraet
FR2561856A1 (fr) * 1984-03-28 1985-10-04 Fabre Armand Nouvelle remorque agricole pour la cueillette et la taille

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667296A (en) * 1950-02-18 1954-01-26 J H Holan Corp Aerial ladder
US3020972A (en) * 1960-03-07 1962-02-13 John A Hockett Combination utility cart and extension ladder
US3556248A (en) * 1969-06-13 1971-01-19 Adolphas E Brown Folding ladder for a working cart
US3621935A (en) * 1969-09-02 1971-11-23 John J Bode Vehicle mounted ladderlike tower
FR2235261A1 (de) * 1973-06-27 1975-01-24 Simon Eng Dudley Ltd
DE2946521A1 (de) * 1979-11-17 1981-05-27 Alois 7091 Birkenzell Schneider Traktor mit hydraulisch betaetigbarem anbaugeraet
FR2561856A1 (fr) * 1984-03-28 1985-10-04 Fabre Armand Nouvelle remorque agricole pour la cueillette et la taille

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034171A1 (en) * 1995-04-28 1996-10-31 Raufoss Stigen A/S Ladder ramp
DE19719292C2 (de) * 1997-05-07 2000-11-23 Ziegler Albert Gmbh Co Kg Haltevorrichtung für eine Leiteranordnung auf einem Fahrzeugdach
FR2763990A1 (fr) * 1997-06-02 1998-12-04 France Elevateur Dispositif elevateur de personnel combinant une echelle standard et un vehicule
CN113324504A (zh) * 2021-05-28 2021-08-31 徐工消防安全装备有限公司 一种导轨长度检测装置、检测方法及消防车

Also Published As

Publication number Publication date
DE69508641D1 (de) 1999-05-06
FR2718789A1 (fr) 1995-10-20
FR2718789B1 (fr) 1996-07-05
EP0679794B1 (de) 1999-03-31
ATE178386T1 (de) 1999-04-15

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