EP0377222B1 - Ausziehleiter auf einem Fahrgestell - Google Patents

Ausziehleiter auf einem Fahrgestell Download PDF

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Publication number
EP0377222B1
EP0377222B1 EP89124141A EP89124141A EP0377222B1 EP 0377222 B1 EP0377222 B1 EP 0377222B1 EP 89124141 A EP89124141 A EP 89124141A EP 89124141 A EP89124141 A EP 89124141A EP 0377222 B1 EP0377222 B1 EP 0377222B1
Authority
EP
European Patent Office
Prior art keywords
platform
baseplate
carriage
longitudinal
guides
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
EP89124141A
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English (en)
French (fr)
Other versions
EP0377222A1 (de
Inventor
Amos Vignali
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89124141T priority Critical patent/ATE74650T1/de
Publication of EP0377222A1 publication Critical patent/EP0377222A1/de
Application granted granted Critical
Publication of EP0377222B1 publication Critical patent/EP0377222B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure

Definitions

  • the subject of the present invention is a ladder device, in fact in the form of a ladder with telescopic elements, with which is associated a plate capable of moving along it, said device being suitable for being mounted retractable on a transport vehicle such as a truck.
  • devices comprising a kind of telescopic ladder with which is associated a plate capable of moving along said ladder in order to support the load to be moved.
  • such a device is supported by two opposite vertical plan frames which are located along the sides of a truck and which are articulated thereto along a horizontal axis oriented transversely rearward, so that the ladder is capable of being placed in a position of use in which it is located at the rear of the truck while resting on the ground, and a rest position in which this ladder is located above the truck, to a substantially horizontal orientation.
  • the telescopic ladder is mounted on a chassis fitted with wheels in order to constitute a real trailer proper intended to be pulled by the truck for the transport of furniture.
  • this second solution has the advantage that the trailer (or trolley) can be detached from the truck when its use is not necessary, but the fact remains that such a carried ladder still carries a remarkably cost high which makes it unsuitable (or inaccessible) for a large number of small or medium-sized enterprises.
  • the main object of the present invention is to provide a scale device capable of remedying the above-mentioned drawbacks by offering a simple, rational, reliable structural solution, of reduced weight and relatively low cost price.
  • the telescopic ladder device with movable platform according to the invention is defined in claim 1.
  • the structural solution suitable for achieving the above-mentioned aim comprises two opposite longitudinal guides which are intended to be fixed under the longitudinal members of the chassis of a truck, behind the rear axle of the latter, a carriage which is movable along these guides, a platform which is rotatably mounted on the carriage along a vertical axis, an upper base which is articulated to this platform so as to oscillate in a vertical plane a ladder body with telescopic elements which is movable on said base, the carriage being able to assign a first position in which the platform upper is located behind the loading platform of the truck, and a second position in which this carriage is included in the plan profile of the platform, while in the retracted position with the base lowered, the ladder is capable of assign a first position in which it projects overhang at the rear of the base and a second position in which it projects overhang forwards beyond this base, and is housed below the truck bed with its own leg folded back against the cab.
  • the carriage is preferably formed by two planar frames, telescopically movable one inside the other, the outer frame being engaged in the longitudinal guides while the inner frame is provided with rear two stabilizing feet to adjustable spacing and positioning.
  • the latter is detachably associated with the longitudinal guides, the external frame being provided towards the front with at least one central stabilizing foot.
  • a pivot device interposed between the carriage and said platform, while the base is articulated on the latter along a transverse axis being connected to the latter by a control member, such as for example a hydraulic cylinder.
  • Fig. 1 is a perspective view from the rear showing the object of the invention associated with a truck, in the transport position, said figure comprising cutouts to better highlight elements which would otherwise be hidden.
  • Fig. 2 is an overall view similar to the previous one, in which the object of the invention is shown still associated with the truck, but in the extraction position, while being ready for use.
  • Fig. 3 is a perspective view of the object of the invention, assumed to be detached from the truck and with the ladder in the raised position, but not deployed.
  • Fig. 4 is a section on a larger scale along the plane IV-IV of FIG. 2, the carriage being shown in the retracted position.
  • Fig. 5 is a section on an even larger scale, along the plane V-V of FIG. 4.
  • the object of the invention comprises, from bottom to top, a carriage 1 which is detachably associated with the rear end of the chassis 2 of a means of transport, a platform 3 which is rotatably mounted on this carriage 1 along a vertical axis, a base 4 capable of oscillating vertically while being articulated to the platform 3 along a horizontal transverse axis (as will be better understood below), and a telescopic ladder 5 along which is intended to move a plate (not shown).
  • the carriage 1 has a telescopic structure constituted by two plane frames respectively referenced 10 and 11.
  • the first frame 10 comprises two tubular beams which are slidably engaged in corresponding longitudinal guides 20 of C section and which are fixed under the rear ends of the beams 21 of the chassis 2, that is to say behind the rear axle from the truck.
  • references 22 and 23 designate the platform, respectively the cab, of this truck.
  • the longitudinal members of the second frame 11 are slidably engaged in the longitudinal members of the first frame 10, the front end of which is provided with projections which cooperate with corresponding limiting stops provided at the rear of the guides 20.
  • limiting stops can for example be in the form of lateral locking and unlocking keys, or any other equivalent system.
  • these stops can be deactivated in order to allow the carriage 1 to be released from the guides 20 in the manner illustrated in FIG. 3.
  • This arrangement is particularly advantageous when it is desired that the truck can be used without the ladder 5, or when the operational area is not accessible by the truck, for example in the case of interior courtyards or gardens.
  • the release or engagement of the carriage 1 is operated manually, but there may be provided control means.
  • a small hydraulic cylinder may be used, or else a drum fitted with a crank and mounted idly on the guides 20, said drum ensuring the winding of a cable whose ends are fixed to the opposite ends of the frame 10.
  • the vertical arms of the feet 13 can be associated with means allowing the orientation of the wheels 12 to be adjusted, these means being able to take the form of a screw and nut mechanism.
  • the front crossmember of the frame 10 is rotatably mounted with respect to said frame and is provided with a foot 130 fitted with a terminal wheel 120.
  • a foot 130 fitted with a terminal wheel 120.
  • means are provided for blocking or unblocking the foot. 130, for example a lock or key, and possibly means for adjusting the orientation of the wheel 120, such as a screw and nut mechanism.
  • the advantages of this third wheel 120 are clearly shown in FIG. 3. It goes without saying that two wheels 120 can be provided.
  • a pivot device which is illustrated in detail in FIG. 4 and 5 and which is arranged in the rear zone of the frame 10 (see fig. 4).
  • this pivot device comprises an outer hollow body 14 with a vertical axis (see FIG. 5) which is fixed to the frame 10 of the carriage 1, an inner hollow body 15 with a cylindrical profile which is mounted for rotation, at reduced clearance, in said body 14, an outer limiting ring 16 which is associated with the lower end of the inner body 15, a sleeve 17 which is engaged and fixed on the upper end of said body 15, as well as a ring- retaining support 18 which is interposed between the body 14 and the sleeve 17, the latter being fixed to the platform 3.
  • this ring 18 is made of Teflon, but it is easily understood that it is possible to make it with a bronze piece or in the form of an anti-friction pad.
  • pivot device may be different from that shown, for example being of the type in which a circumferential series of balls is interposed between the fixed and mobile elements.
  • Means have also been provided for ensuring the reciprocal angular locking of the frame 10 and the platform 3. These means have not been shown because they can be easily imagined by any technician; they can for example be constituted by two superimposed circular crowns, arranged horizontally and fixed one to the frame 10, the other to the platform 3. To these crowns is associated a locking key, said crowns being pierced for this purpose a circumferential series of perforations suitable for receiving the aforementioned key.
  • a cylindrical bar 31 (see fig. 5), the latter supporting in rotation a sleeve 32.
  • the latter is provided in its center with two parallel levers 33 oriented obliquely and fixed downwards to a small plane frame 34, inclined and oriented longitudinally.
  • this small frame 34 is provided at the rear with a sleeve 35 and is equipped at the front with a socket 36 internally threaded.
  • This sleeve 35 is mounted idly on a rear cylindrical cross member 40 which joins the side members of the base 4, while the bush 36 is included between the two aforementioned levers 33 while being articulated to these along a transverse axis.
  • the platform 3 comprises a cross member 37 under which is mounted for rotation along a transverse axis a cage referenced 38. In the latter is engaged in rotation, while by being immobilized axially, a threaded shaft 39 the opposite end of which is introduced into the socket 36 indicated above. Under these conditions, the base 4 and the scale 5 are liable to oscillate in a vertical plane, as clearly illustrated in FIG. 3.
  • the shaft 39 extends outside of the cage 38 to constitute an external end fitting suitable for cooperating with an actuating crank (not shown); for the angular displacement of the base 4 may be provided means different from those which have been described, for example a hydraulic cylinder, in particular with manual control.
  • the side members of the base 4 are fixed upwards two supports 41 which are constituted by L-shaped profiles whose dihedrons face each other.
  • these supports 41 On the vertical wings of these supports 41 are fixed longitudinal sliding pads 42, made for example of Teflon or other suitable material; one of these pads is particularly visible in fig. 5.
  • these guides 50 are provided along the rear longitudinal edges of the external elements 51 , that is to say on the part of the scale 5 which is opposite to that along which move the loads or goods to be raised or lowered.
  • the structure is easily understood. We will confine our to noting that these guides 50 could be fixed to the supports 41, while the pads 42 would then be integral with the external elements 51 of the scale 5.
  • rollers can be used crazy or to pads.
  • the ladder 5 is constituted by a series of planar frames (five in number in the case considered), each of these being formed by two parallel elements 51 of C section, open one in direction of the other and whose lower wings (considered in fig. 1) are connected by a series of crosspieces 52.
  • a series of crosspieces 52 In order not to overload the figs. 2 and 3, only one of these crosspieces 52 has been shown; the transverse configuration of the elements 51 is clearly shown in FIG. 5.
  • the elements 51 have a length of approximately four meters, while the spacing of the crosspieces 52 is of the order of 0.5 meters.
  • the flat frames which make up the scale 5 are mutually engaged inside each other (see fig. 1, 2, 3 and 5), and are made of a particularly resistant material while being relatively light (such as for example an aluminum alloy or the like); they are connected to each other by a length of cable suitable for deploying and folding the assembly.
  • an actuation device capable of controlling the lengthening and shortening of said scale, as well as the outward and return movement of a plate intended for elevation or lowering of loads or goods along this scale.
  • This plate and its actuating device have not been shown because they can be of any known type, in particular of those used in the devices mentioned in the preamble.
  • the actuating device comprises an electric or hydraulic motor, provided with two opposite power take-offs with which are associated corresponding members, the implementation of which can be selected according to whether the scale 5 or the plate must be controlled. .
  • This plate is intended to be associated (using conventional rollers for movement and guidance) with the front wings of the elements 51 of the scale 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Pallets (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)

Claims (8)

1. Ausziehleiter auf einem Fahrgestell, insbesondere für Transportfahrzeuge, z. B. Lastkraftwagen, gekennzeichnet durch folgende Merkmale in Kombination miteinander:
- zwei einander gegenüberliegende Längsführungen (20), welche auf Längsträgern (21) des Fahrgestelles (2) des Lastkraftwagens zwischen der Hinterachse desselben und im Inneren des ebenen Profiles der Ladefläche (22) befestigt sind;
- ein längs der beiden Längsführungen (20) bewegbarer Schlitten (1), welcher eine erste Stellung einnehmen kann, in welcher er sich hinter der Ladefläche (22) befindet und eine zweite Stellung einnehmen kann, in welcher er vollständig unterhalb der Ladefläche (22) zu liegen kommt;
- eine obere Ladebühne (3), welche auf dem Schlitten (1) um eine vertikale Achse drehbar gelagert ist;
- ein oberer Ansatz (4), welcher an der Ladebühne (3) längs einer waagerechten, in Querrichtung orientierten Achse (31) in der Weise angelenkt ist, daß er in einer vertikalen Ebene Schwenkbewegungen vollführen kann;
- ein Leiterkörper (5) mit teleskopartigen Teilen (51), welcher sich in Längsrichtung längs des Schwenkbewegungen vollführbaren Ansatzes (4) bewegt und welcher in der Lage ist, in seiner eingefahrenen Stellung bei abgesenktem Ansatz (4) eine erste Stellung einzunehmen, in welcher er nach hinten auskragt und in einer zweiten Stellung nach vorne über den Ansatz (4) hinauskragt und dabei oberhalb der Hinterachse des Lastkraftwagens in der Weise zu liegen kommt, daß sein Fuß sich gegen die Fahrerkabine (23) anlegt.
2. Ausziehleiter nach Anspruch 1, dadurch gekennzeichnet, daß die Längsführungen (20) den Querschnitt eines offenen C aufweisen und die Öffnungen einander gegenüber liegen, während der Schlitten von zwei ebenen, teleskopartig ineinandergeschachtelten Trägern (10 - 11) gebildet ist, wobei der äußere Träger (10) in den Längsführungen (20) gleitend geführt ist, während der hintere Querträger des inneren Trägers (11) mit zwei seitlichen Füßen (13) zur Stabilisierung versehen ist, welche verschwenkbar gelagert und deren Abstand und Lage regelbar sind.
3. Ausziehleiter nach Anspruch 2, dadurch gekennzeichnet, daß der Schlitten (1) mit den Längsführungen (20) lösbar verbindbar ist, während der vordere Querträger des äußeren Trägers (10) mit zumindest einem verschwenkbaren und regelbaren Mittelfuß (130) zur Stabilisierung versehen ist.
4. Ausziehleiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Längsführungen (20) und der Schlitten (1) mit Mitteln zur Steuerung der Bewegung des Schlittens (1) relativ zu den Längsführungen (20) versehen sind und daß diese Mittel aus einem hydraulisch betätigbaren Zylinder bestehen.
5. Ausziehleiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die drehbare Ladebühne (3) aus einem ebenen Aufbau besteht, welcher relativ zu dem äußeren Träger (10) des Schlittens (1) mittels einer Schwenkvorrichtung (14 - 18) drehbar gelagert ist, daß dieser Schwenkvorrichtung Mittel zur Steuerung der Drehbewegung der Ladebühne sowie zur Arretierung derselben in der gewünschten Stellung zugeordnet sind und daß diese Mittel aus einer in Querrichtung sich erstreckenden Zahnstange bestehen, welche mit einer konzentrisch zu dem drehbaren Element der Schwenkvorrichtung (14 - 18) liegenden Verzahnung in Eingriff steht.
6. Ausziehleiter nach Anspruch 5, dadurch gekennzeichnet, daß der drehbare Ansatz (4) einen ebenen Aufbau hat und mit seinem einen äußeren Ende längs einer der Schwenkvorrichtung (14 - 18) gegenüberliegenden Querachse (31) an der Ladebühne (3) angelenkt ist und daß mit dieser Querachse (31) ein Längshebel (34) gelenkig verbunden ist, welcher die Form eines ebenen Aufbaues hat, dessen einander gegenüberliegenden äußeren Enden auf der Achse (31) angeordnet und mit dem anderen äußeren Ende des verschwenkbaren Ansatzes (4) bzw. mit Steuermitteln, z. B. einem Schraubenspindeltrieb (36- 39) verbunden sind.
7. Ausziehleiter nach Anspruch 6, dadurch gekennzeichnet, daß den Längsträgern des Ansatzes (4) nach oben zu zwei Längsträger (41) mit L-förmigem Querschnitt zugeordnet sind, deren Öffnungen einander gegenüber liegen, wobei die unteren Schenkel dieser Träger in der Lage sind, sich gegen das Niveau der oberen Fläche der Längsträger (21) des Fahrgestelles (2) dann anzulegen, wenn der Ansatz (4) abgesenkt ist und daß an dem oberen Schenkel dieser Längsträger Gleitschuhe (42) vorgesehen sind, welche mit im Querschnitt C-förmigen , an den Seitenflächen des äußeren Teiles (51) des Leiterkörpers (5) befestigten Führungsschienen zusammenarbeiten.
8. Ausziehleiter nach Anspruch 7, dadurch gekennzeichnet, daß zwischen dem verschwenkbaren Ansatz (4) und dem Leiterkörper (5) Mittel zur Steuerung der Bewegung des Leiterkörpers (5) relativ zu dem Ansatz (4), insbesondere in Form einer Trommel, angeordnet sind, welche mit einer Kurbel ausgerüstet und auf dem Ansatz (4) drehbar gelagert ist und daß auf dieser Trommel sich ein Kabel aufwickelt, dessen äußeren Enden an den einander gegenüberliegenden äußeren Enden des äußeren Teiles (51) des Leiterkörpers (4) befestigt sind.
EP89124141A 1989-01-03 1989-12-29 Ausziehleiter auf einem Fahrgestell Expired - Lifetime EP0377222B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89124141T ATE74650T1 (de) 1989-01-03 1989-12-29 Ausziehleiter auf einem fahrgestell.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4680189 1989-01-03
IT8946801A IT1234768B (it) 1989-01-03 1989-01-03 Gruppo scala telescopica/piattaforma scorrevole atto ad essere applicato a scomparsa su mezzi di trasporto in genere

Publications (2)

Publication Number Publication Date
EP0377222A1 EP0377222A1 (de) 1990-07-11
EP0377222B1 true EP0377222B1 (de) 1992-04-08

Family

ID=11258858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89124141A Expired - Lifetime EP0377222B1 (de) 1989-01-03 1989-12-29 Ausziehleiter auf einem Fahrgestell

Country Status (6)

Country Link
EP (1) EP0377222B1 (de)
AT (1) ATE74650T1 (de)
DE (1) DE68901177D1 (de)
ES (1) ES2032096T3 (de)
GR (1) GR3005085T3 (de)
IT (1) IT1234768B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536846A2 (de) * 1991-10-10 1993-04-14 Nv Nuyts Orb Kraftfahrzeugkombination von Umzugsfahrzeug und Leiteraufzug
DE4139789A1 (de) * 1991-12-03 1993-06-09 Albert Boecker Gmbh & Co Kg, 4712 Werne, De An einem strassenfahrzeug loesbar angeordneter und bestandteil des strassenfahrzeuges bildender schraegaufzug, insbesondere moebelaufzug
DE9406710U1 (de) * 1993-04-21 1994-09-22 Matula, Franz, 81735 München Verfahrbares Arbeits- und Transportsystem
CN106193994B (zh) * 2016-08-31 2017-10-24 沈阳捷通消防车有限公司 一种消防梯用装卸装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1711358A (en) * 1927-06-20 1929-04-30 Fred A Lundahl Ladder and adjusting mechanism
DE2262063A1 (de) * 1972-12-19 1974-06-27 Albert Boecker Fa Lastenaufzug oder leiter
DE2327914A1 (de) * 1973-06-01 1974-12-19 Krupp Gmbh Abbruchmaschine
US4054182A (en) * 1976-07-12 1977-10-18 Ide Allan R Ladder carriage
CA1038833A (en) * 1977-02-02 1978-09-19 John R. Keller Ladder assembly
FR2561856A1 (fr) * 1984-03-28 1985-10-04 Fabre Armand Nouvelle remorque agricole pour la cueillette et la taille

Also Published As

Publication number Publication date
EP0377222A1 (de) 1990-07-11
GR3005085T3 (de) 1993-05-24
IT8946801A0 (it) 1989-01-03
DE68901177D1 (de) 1992-05-14
ATE74650T1 (de) 1992-04-15
IT1234768B (it) 1992-05-26
ES2032096T3 (es) 1993-01-01

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