EP0565833B1 - Device for perpendicularly aligning the upright axis of a superstructure turnably and inclinably mounted on an understructure - Google Patents

Device for perpendicularly aligning the upright axis of a superstructure turnably and inclinably mounted on an understructure Download PDF

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Publication number
EP0565833B1
EP0565833B1 EP93102929A EP93102929A EP0565833B1 EP 0565833 B1 EP0565833 B1 EP 0565833B1 EP 93102929 A EP93102929 A EP 93102929A EP 93102929 A EP93102929 A EP 93102929A EP 0565833 B1 EP0565833 B1 EP 0565833B1
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EP
European Patent Office
Prior art keywords
slewing ring
slewing
superstructure
axis
ring
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Expired - Lifetime
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EP93102929A
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German (de)
French (fr)
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EP0565833A1 (en
Inventor
Paul Keller
Nikolaus Raidt
Heiner Hörsch
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Iveco Magirus AG
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Iveco Magirus AG
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    • 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
    • E06C5/32—Accessories, e.g. brakes on ladders
    • E06C5/40—Devices for canting ladders laterally

Definitions

  • the invention relates to a device for vertical alignment of the vertical axis a structure that can be rotated and tilted on a base according to the preamble of claim 1.
  • DE 22 65 155 A1 and DE 22 65 199 A1 show and describe one mobile aerial ladder that rotates on a lower part of the slewing ring, which can be pivoted on all sides with the chassis of the corresponding vehicle is connected.
  • U.S. Patent No. 4,834,215 discloses a fire engine that consists of a semi-trailer truck and a semitrailer.
  • the front area of the semitrailer is with a horizontal, transverse swivel axis its rear area connected and is above another horizontal, transverse swivel axis in connection with the articulated lorry. If the fire engine is located at an in Incline, the front area with the help of actuating cylinders in a horizontal position compensating for the gradient pivoted.
  • Leveling in the direction transverse to the vehicle is carried out with the help of hydraulic supports on both Sides of the vehicle that cover the front area of the trailer if necessary Lift off the floor and align.
  • the object of the invention is to create an alignment device of the type mentioned above, which is a perpendicular Align the vertical axis reliably and especially with Using simple means.
  • the essence of the invention is a luffing mechanism between two slewing rings to provide.
  • the luffing mechanism preferably has one central pivot axis, which is also the diameter corresponds to the slewing rings.
  • the luffing mechanism can in particular by actuating cylinders be replaced that the upper slewing ring has at least one Adjusting cylinder connected to the lower slewing ring and lengthways two opposite slopes of the lower slewing ring is movable.
  • the extensions intersect the slopes of the lower turntable in the vertical Central axis of the lower slewing ring above it.
  • there can be two identical slopes on each side be provided with respect to the vertical central axis.
  • the Slopes are preferred as a guide for separate components, which are firmly connected to the lower slewing ring, whereby in the scenery guides scenery stones of the upper slewing ring intervene slidably.
  • the advantage of this latter Design variants is that lower bearing forces occur due to a larger lever arm and the force curve can be transferred directly to the base.
  • a luffing mechanism is provided between the two slewing rings, it preferably has two peripheral swivel bearings, which is diametrically opposite on the circumference of the two slewing rings Place.
  • the luffing gear comprises a luffing drive, which has a Tilt sensor can be controlled around the vertical axis of the adjustable Align the structure automatically.
  • the rocker drive has two hydraulic peripheral Actuating cylinder on the circumference of the two slewing rings are arranged in diametrically opposite positions, the pivot axis of the luffing gear in the middle between the two actuating cylinders.
  • the base which is the chassis of an ambulance can be on the usually sloping surface positioned.
  • the upper and lower slewing rings are located here parallel to each other.
  • the vertical axis of the vehicle is inclined according to the slope of the surface.
  • the lower rotary drive of the lower turntable preferably via a further level or inclination sensor actuated to the two diametrically opposite Through to the lowest or highest position
  • the whole turns Structure, aerial ladder, etc. with. Are the highest and the the lowest position of the two actuating cylinders is set lower rotary drive or its drive pinion non-positively connected to the vehicle frame or underframe, so that the lower slewing ring is blocked.
  • the Luffing drive of the luffing gear which over the assigned Inclination sensor for the vertical position of the vertical axis of the adjustable structure is controlled. More specifically the lowest one is a hydraulic one Adjusting cylinder of the luffing gear extended while the other hydraulic actuating cylinders at the highest position is retracted until the upper slewing ring is exactly horizontal is aligned. Accordingly aligned horizontally is then the upper adjustable structure, and it can this through the upper actuator of the upper slewing ring twisted exactly in the horizontal and for example a turntable ladder arranged thereon in a certain turntable and height position are driven.
  • the upper and lower rotary drive during the compensation process for Alignment of the vertical axis can be operated simultaneously and in opposite directions such that the structure does not rotate and only takes part in the seesaw movement.
  • a particularly simple construction of the alignment device results itself if slewing rings, actuators and / or actuating cylinders are essentially the same.
  • the invention uses only two of the same Standard slewing rings allow which of only two of the same Standard actuators or rotary drives must be driven.
  • the complicated oblique is advantageously eliminated Training of the intermediate slewing ring mentioned above and its actuator, especially the comparative complicated manufacture of the convex known drive pinions.
  • the arrangement consists of simple components and there is also a simple control and position control.
  • Another particularly advantageous development of the invention is characterized in that the lower slewing ring by means of a ball slewing ring in the form of a roller bearing is replaced and the latter instead of the lower rotary drive has a locking device through which the ball slewing ring with regard to the base can.
  • the luffing gear is first turned until the positioning cylinders are in the fall line.
  • the ladder support of the commercial vehicle serves as a counter-holding device for the assembly during the turning process of the luffing gear. If the actuating cylinders are in the fall line, the parking brake is applied. The ladder is then raised. After an upright angle of approx. 5 °, the luffing cylinders start to work and bring the vertical axis into line.
  • a level swivel block with an upper swivel head, rocker, roller bearing and parking brake with effect in the direction of the base frame has great advantages in addition to a simple overall structure.
  • DE-PS 20 36 559 is a rocker-like yoke linkage a mobile pull-out ladder, especially a fire ladder, known.
  • the known yoke linkage requires always one during the rotation on the inclined plane Readjust the ladder or the basket floor to the horizontal Level.
  • the alignment device according to FIG DE-A-22 65 165 is not the essence of the invention.
  • the fire engine illustrated in Figs. 1 and 2 includes a device (10) for the vertical alignment of the Vertical axis (9) one with a base (11) rotatable and inclinable structure (7) consisting of carriage and Turntable ladder (12).
  • the base (11) of the fire engine is a lower one ball-bearing slewing ring (2) assigned, which by a lower rotary drive (4) can be adjusted or turned can.
  • the lower rotary drive (4) has a blocking device, to fix the lower slewing ring (2).
  • the rotatable and inclinable structure (7) is on the underside an upper turntable (8) assigned by a upper rotary drive (3) can be driven or adjusted can.
  • Lower (2) and upper (8) slewing rings and lower (4) and the upper (3) rotary drive are designed essentially the same.
  • a luffing gear (1) which is essentially consisting of two disks with swivel bearings connected to them (5) consists.
  • two are diametrically opposite Swivel bearing (5) is provided, as illustrated in Fig. 2 is.
  • Both swivel bearings (5) have the same central one Swivel axis (13).
  • the luffing gear (1) in turn has a luffing drive in Form of two hydraulic peripheral actuating cylinders (6), which on the circumference of the two slewing rings (2, 8) on diametrically opposite Are fixed, the pivot axis (13) of the luffing gear (1) in the middle between the two actuating cylinders (6) lies.
  • the rocker drive can be controlled via an inclination sensor, about the vertical axis (9) of the adjustable structure (7) in the to align the vertical position.
  • the tilt sensor controls the luffing cylinders with the help of the hydraulics or the hydraulic actuating cylinders (6) and Actuators (3, 4) and puts the implement in Level "zero" as described in detail above.
  • the lower actuator (4) becomes non-positive during this process connected to the substructure.
  • the implement or the adjustable body (7) with the upper rotary or actuator (3) Rotate endlessly on the horizontal plane without any need to make further adjustments (such as this according to DE-PS 20 36 559 is necessary).
  • the lower slewing ring (2) The embodiment variant described above is an economical one Ball slewing ring (14) in the form of a roller bearing and a parking brake in place of the lower rotary drive (4) (15) through which the ball slewing ring is referenced of the base (11) can be determined.
  • the conductor support (16) according to FIG. 5 serves as a counter-holding device for the structure (7) during the turning process of the luffing gear (1).
  • the aerial ladder (12) is erected. After an upright angle of approx. 5 °, the luffing or positioning cylinders start to work and bring the vertical axis into line. After the required level regulation angle has been reached, the ladder is adjusted in every operating position and is therefore ready for operation in a functionally reliable manner * Tactically, this has great advantages.
  • the device (10) for the vertical alignment of the vertical axis (9) according to FIGS. 6 and 7 has instead of the entrance mentioned luffing gear at least one actuating cylinder (17) between the upper slewing ring (8) and the lower slewing ring (2).
  • the piston rod (23) of the actuating cylinder (17) on a lower mounting bracket (24) of the upper one Slewing ring in an upper pivot point (25) and the other End of the actuating cylinder (17) via an upper mounting bracket (26) of the lower slewing ring in a lower articulation point (27) articulated.
  • Both mounting brackets (24, 26) are essentially the same.
  • the backdrop tours are therefore able to absorb tensile and compressive forces.
  • the overall arrangement is taken so that in the fully retracted Position of the control cylinder or cylinders (17) upper
  • the slewing ring (8) and the lower slewing ring (2) are plane-parallel exactly aligned one above the other with the same perpendicular bisector according to FIG. 6 7, while the actuating cylinder (17) according to FIG. a maximum in its fully extended position Adjustment angle between the upper slewing ring (8) and the lower one Set up slewing ring (2).
  • the upper part is in operation for vertical alignment of the vertical axis only in shifted one direction, always against the fall line.
  • the advantage of this variant is that that small bearing forces occur due to the larger lever arm and the force curve practically directly on the substructure can be transferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Ladders (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Golf Clubs (AREA)
  • Jib Cranes (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

A device (10) for perpendicularly aligning the upright axis (9) of a superstructure (7) turnably and inclinably mounted on an understructure (11), for example a turntable ladder (12), is proposed, which has an upper turntable (8) and a lower turntable (2), a tilting mechanism (1) with a central swivelling axis (13) and associated tilting drive in the form of hydraulic control cylinders (6) being interposed. Instead of the tilting mechanism, one or more control cylinders (17) can be directly interposed between the upper and the lower turntable, it being possible to displace the upper and lower turntables on two oblique paths or inclines (18, 19). The lower turntable (2) can be replaced by a ball-bearing slewing rim (14) with associated parking brake (15), which in terms of tactics of use is of great advantage. The power flow then no longer takes place via two toothings but only via a rotary drive and a turntable. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum lotrechten Ausrichten der Hochachse eines auf einem Untergestell dreh- und neigungsverstellbaren Aufbaus gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for vertical alignment of the vertical axis a structure that can be rotated and tilted on a base according to the preamble of claim 1.

Die DE 22 65 155 A1 sowie die DE 22 65 199 A1 zeigen und beschreiben eine fahrbare Drehleiter, die sich auf einem Drehverbindungsunterteil dreht, das über ein Kugelgelenk allseitig verschwenkbar mit dem Fahrgestell des entsprechenden Fahrzeugs verbunden ist.DE 22 65 155 A1 and DE 22 65 199 A1 show and describe one mobile aerial ladder that rotates on a lower part of the slewing ring, which can be pivoted on all sides with the chassis of the corresponding vehicle is connected.

Die US-PS 4 834 215 offenbarbart ein Feuerwehrfahrzeug, das aus einem Sattelschlepper und einem Sattelanhänger besteht. Der vordere Bereich des Sattelanhängers ist über eine waagerechte, quergerichtete Schwenkachse mit dessen hinterem Bereich verbunden und steht im übrigen über eine weitere waagerechte, quergerichtete Schwenkachse mit dem Sattelschlepper in Verbindung. Befindet sich das Feuerwehrfahrzeug am Einsatzort an einer in Fahrtrichtung verlaufenden Steigung, so wird der vordere Bereich mit Hilfe von Stellzylindern in eine die Steigung ausgleichende waagerechte Stellung geschwenkt. Dabei wird dieser vordere Bereich um die beiden erwähnten Schwenkachsen in bezug auf den Sattelschlepper einerseits und den hinteren Bereich des Anhängers andererseits geschwenkt. Die Nivellierung in Richtung quer zum Fahrzeug erfolgt mit Hilfe von hydraulischen Stützen an beiden Seiten des Fahrzeugs, die den vorderen Bereich des Anhängers gegebenenfalls vom Boden abheben und ausrichten. U.S. Patent No. 4,834,215 discloses a fire engine that consists of a semi-trailer truck and a semitrailer. The front area of the semitrailer is with a horizontal, transverse swivel axis its rear area connected and is above another horizontal, transverse swivel axis in connection with the articulated lorry. If the fire engine is located at an in Incline, the front area with the help of actuating cylinders in a horizontal position compensating for the gradient pivoted. This front area around the two mentioned Swivel axes in relation to the tractor and the rear Area of the trailer on the other hand pivoted. Leveling in the direction transverse to the vehicle is carried out with the help of hydraulic supports on both Sides of the vehicle that cover the front area of the trailer if necessary Lift off the floor and align.

Aus DE 35 40 666 A1 ist eine Ausrichtvorrichtung der vorgenannten Art bekannt, welche drei Drehkränze und entsprechend viele Stellantriebe aufweist, um den verstellbaren Aufbau bei einem auf einem schrägen Untergrund positionierten Untergestell horizontal auszurichten. Der mittlere der drei übereinander angeordneten Drehkränze liegt hierbei schräg, um eine maximale Schräglage zwischen den beiden anderen Drehkränzen bei einer Relativdrehung der Einzelteile einzurichten. Der mittlere Drehkranz einschließlich des zugehörigen Antriebsritzels ist vergleichsweise kompliziert im Aufbau und impliziert hohe Fertigungs- und Montagekosten.DE 35 40 666 A1 describes an alignment device of the aforementioned Kind known which three slewing rings and accordingly has many actuators to the adjustable structure with a stand positioned on an inclined surface align horizontally. The middle of the three on top of each other arranged turntables lies obliquely to a maximum inclination between the other two slewing rings with a relative rotation of the individual parts. The middle slewing ring including the associated one Drive pinion is comparatively complicated in construction and implies high manufacturing and assembly costs.

Aufgabe der Erfindung ist die Schaffung einer Ausrichtvorrichtung der eingangs genannten Art, welche ein lotrechtes Ausrichten der Hochachse zuverlässig und insbesondere mit Hilfe einfacher Mittel ermöglicht.The object of the invention is to create an alignment device of the type mentioned above, which is a perpendicular Align the vertical axis reliably and especially with Using simple means.

Gelöst wird die der Erfindung zugrundeliegende Aufgabe durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale.The object on which the invention is based is achieved by the features specified in the characterizing part of claim 1.

Vorteilhaft weitergebildet wird der Erfindungsgegenstand durch die Merkmale der Unteransprüche 2 bis 19. The subject of the invention is advantageously further developed by the features of subclaims 2 to 19.

Wesen der Erfindung ist, ein Wippwerk zwischen zwei Drehkränzen vorzusehen. Das Wippwerk weist vorzugsweise eine zentrale Schwenkachse auf, welches auch dem Durchmesser der Drehkränze entspricht.The essence of the invention is a luffing mechanism between two slewing rings to provide. The luffing mechanism preferably has one central pivot axis, which is also the diameter corresponds to the slewing rings.

Das Wippwerk kann insbesondere durch Stellzylinder dadurch ersetzt sein, daß der obere Drehkranz über zumindest einen Stellzylinder mit dem unteren Drehkranz verbunden und längs zweier entgegengesetzter Schrägen des unteren Drehkranzes verschiebbar ist. Insbesondere schneiden sich die Verlängerungen der Schrägen des unteren Drehkranzes in der senkrechten Mittelachse des unteren Drehkranzes oberhalb desselben. Im besonderen können zwei identische Schrägen auf jeder Seite bezüglich der senkrechten Mittelachse vorgesehen sein. Die Schrägen sind bevorzugt Kulissenführungen separater Bauteile, welche mit dem unteren Drehkranz fest verbunden sind, wobei in den Kulissenführungen Kulissensteine des oberen Drehkranzes verschieblich eingreifen. Der Vorteil dieser letztgenannten Ausführungsvarianten besteht darin, daß geringere Lagerkräfte auftreten durch einen größeren Hebelarm und der Kraftverlauf direkter auf das Untergestell übertragen werden kann.The luffing mechanism can in particular by actuating cylinders be replaced that the upper slewing ring has at least one Adjusting cylinder connected to the lower slewing ring and lengthways two opposite slopes of the lower slewing ring is movable. In particular, the extensions intersect the slopes of the lower turntable in the vertical Central axis of the lower slewing ring above it. In particular, there can be two identical slopes on each side be provided with respect to the vertical central axis. The Slopes are preferred as a guide for separate components, which are firmly connected to the lower slewing ring, whereby in the scenery guides scenery stones of the upper slewing ring intervene slidably. The advantage of this latter Design variants is that lower bearing forces occur due to a larger lever arm and the force curve can be transferred directly to the base.

Ist zwischen den beiden Drehkränzen ein Wippwerk vorgesehen, so besitzt dieses vorzugsweise zwei periphere Schwenklager, welche auf dem Umfang der beiden Drehkränze an diametral entgegengesetzter Stelle liegen.If a luffing mechanism is provided between the two slewing rings, it preferably has two peripheral swivel bearings, which is diametrically opposite on the circumference of the two slewing rings Place.

Das Wippwerk umfaßt einen Wippantrieb, welcher über einen Neigungsfühler ansteuerbar ist, um die Hochachse des verstellbaren Aufbaus automatisch lotrecht auszurichten. Insbesondere weist der Wippantrieb zwei hydraulische periphere Stellzylinder auf, welche auf dem Umfang der beiden Drehkränze an diametral entgegengesetzter Stelle angeordnet sind, wobei die Schwenkachse des Wippwerks in der Mitte zwischen den beiden Stellzylindern liegt. The luffing gear comprises a luffing drive, which has a Tilt sensor can be controlled around the vertical axis of the adjustable Align the structure automatically. Especially the rocker drive has two hydraulic peripheral Actuating cylinder on the circumference of the two slewing rings are arranged in diametrically opposite positions, the pivot axis of the luffing gear in the middle between the two actuating cylinders.

Für eine Verstellung des verstellbaren Aufbaus wird vorab das Untergestell, welches das Fahrgestell eines Rettungsfahrzeuges sein kann, auf dem in der Regel schrägen Untergrund positioniert. Oberer und unterer Drehkranz liegen hierbei planparallel zueinander. Die Hochachse des Fahrzeugs ist entsprechend der Schräge des Untergrunds geneigt. Anschließend wird der untere Drehantrieb des unteren Drehkranzes vorzugsweise über einen weiteren Niveau- oder Neigungsfühler betätigt, um die beiden diametral gegenüberliegenden Stellzylinder in die tiefste bzw. in die höchste Lage durch Drehbewegung zu verstellen. Hierbei dreht sich der gesamte Aufbau, Drehleiter, etc. mit. Sind die höchste und die tiefste Lage der beiden Stellzylinder eingestellt, wird der untere Drehantr ieb bzw. dessen Antriebsritzel kraftschlüssig mit dem Fahrzeuggestell bzw. Untergestell verbunden, so daß der untere Drehkranz blockiert ist. Daraufhin setzt der Wippantrieb des Wippwerks ein, welcher über den zugeordneten Neigungsfühler zwecks Lotrechtstellung der Hochachse des verstellbaren Aufbaus angesteuert wird. Im einzelnen wird hierbei der an tiefster Stelle gelegene eine hydraulische Stellzylinder des Wippwerks ausgefahren, während der andere an höchster Stelle gelegene hydraulische Stellzylinder eingefahren wird, bis der obere Drehkranz exakt horizontal ausgerichtet ist. Entsprechend horizontal ausgerichtet ist dann auch der obere verstellbare Aufbau, und es kann dieser durch den oberen Stellantrieb des oberen Drehkranzes exakt in der Horizontalen verdreht und beispielsweise eine darauf angeordnete Drehleiter in eine bestimmte Dreh- und Höhenposition gefahren werden.For an adjustment of the adjustable structure in advance the base, which is the chassis of an ambulance can be on the usually sloping surface positioned. The upper and lower slewing rings are located here parallel to each other. The vertical axis of the vehicle is inclined according to the slope of the surface. Then the lower rotary drive of the lower turntable preferably via a further level or inclination sensor actuated to the two diametrically opposite Through to the lowest or highest position To adjust rotational movement. Here the whole turns Structure, aerial ladder, etc. with. Are the highest and the the lowest position of the two actuating cylinders is set lower rotary drive or its drive pinion non-positively connected to the vehicle frame or underframe, so that the lower slewing ring is blocked. Then the Luffing drive of the luffing gear, which over the assigned Inclination sensor for the vertical position of the vertical axis of the adjustable structure is controlled. More specifically the lowest one is a hydraulic one Adjusting cylinder of the luffing gear extended while the other hydraulic actuating cylinders at the highest position is retracted until the upper slewing ring is exactly horizontal is aligned. Accordingly aligned horizontally is then the upper adjustable structure, and it can this through the upper actuator of the upper slewing ring twisted exactly in the horizontal and for example a turntable ladder arranged thereon in a certain turntable and height position are driven.

Gemäß einer Weiterbildung der Erfindung sind der obere und untere Drehantrieb während des Ausgleichsvorgangs zum Ausrichten der Hochachse gleichzeitig und gegenläufig betreibbar derart, daß der Aufbau sich dabei nicht dreht und lediglich die Wippbewegung mitmacht. According to a development of the invention, the upper and lower rotary drive during the compensation process for Alignment of the vertical axis can be operated simultaneously and in opposite directions such that the structure does not rotate and only takes part in the seesaw movement.

Ein besonders einfacher Aufbau der Ausrichtvorrichtung ergibt sich, wenn Drehkränze, Stellantriebe und/oder Stellzylinder im wesentlichen gleich ausgebildet sind.A particularly simple construction of the alignment device results itself if slewing rings, actuators and / or actuating cylinders are essentially the same.

Durch die Erfindung wird die Verwendung von nur zwei gleichen Standard-Drehkränzen ermöglicht, welche von nur zwei gleichen Standard-Stell- oder Drehantrieben angetrieben werden müssen. Es entfällt in vorteilhafter Weise die komplizierte schräge Ausbildung des eingangs genannten zwischengeordneten Drehkranzes sowie dessen Stellantrieb, insbesondere die vergleichsweise komplizierte Herstellung der konvexen bekannten Antriebsritzeln. Die Anordnung besteht insgesamt aus einfachen Bauteilen und auch ergibt sich eine einfache Steuerung und Lageregelung.The invention uses only two of the same Standard slewing rings allow which of only two of the same Standard actuators or rotary drives must be driven. The complicated oblique is advantageously eliminated Training of the intermediate slewing ring mentioned above and its actuator, especially the comparative complicated manufacture of the convex known drive pinions. The arrangement consists of simple components and there is also a simple control and position control.

Eine weitere besonders vorteilhafte Weiterbildung der Erfindung zeichnet sich dadurch aus, daß der untere Drehkranz durch eine Kugeldrehverbindung in Form eines Wälzlagers ersetzt ist und letzteres anstelle des unteren Drehantriebs eine Feststelleinrichtung aufweist, durch welche die Kugeldrehverbindung bezüglich des Untergestells festgestellt werden kann. Durch Wegfall des unteren Drehkranzes mit zuge' hörigem Stellantrieb ergibt sich ein besonders einfach aufgebauter Niveaudrehblock. Vorteilhaft ist eine Verringerung des Drehspiels gegeben. Der Kraftfluß erfolgt nicht mehr über zwei Verzahnungen, sondern nur über einen Drehantrieb und einen (oberen) Drehkranz.Another particularly advantageous development of the invention is characterized in that the lower slewing ring by means of a ball slewing ring in the form of a roller bearing is replaced and the latter instead of the lower rotary drive has a locking device through which the ball slewing ring with regard to the base can. By eliminating the lower slewing ring with audible actuator results in a particularly simple structure Level turn block. A reduction is advantageous given the shooting game. The power flow no longer takes place via two gears, but only via a rotary drive and an (upper) slewing ring.

Während des Ausgleichsvorganges wird zunächst das Wippwerk gedreht, bis sich die Stellzylinder in der Fallinie befinden. Dabei dient die Leiterauflage des Nutzfahrzeuges als Gegenhalteeinrichtung für den Aufbau während des Drehvorgangs des Wippwerkes. Befinden sich die Stellzylinder in der Fallinie, wird die Feststellbremse angezogen. Anschliessend wird die Leiter aufgerichtet. Nach einem Aufrichtwinkel von ca. 5° beginnen die Wippzylinder zu arbeiten und bringen die Hochachse ins Lot. Nach Erreichen des erforderlichen Niveauregulierungswinkels ist die Leiter in jeder Betriebsstellung ausreguliert und somit auf funktionssichere Weise betriebsbereit * Ein Niveaudrehblock mit oberem Drehkranz, Wippe, Wälzlager und Feststellbremse mit Wirkung in Richtung Untergestell hat neben einem einfachen Gesamtaufbau einsatztaktisch große Vorteile.During the balancing process, the luffing gear is first turned until the positioning cylinders are in the fall line. The ladder support of the commercial vehicle serves as a counter-holding device for the assembly during the turning process of the luffing gear. If the actuating cylinders are in the fall line, the parking brake is applied. The ladder is then raised. After an upright angle of approx. 5 °, the luffing cylinders start to work and bring the vertical axis into line. After the required level regulation angle has been reached, the ladder is adjusted in every operating position and is therefore ready for operation in a functionally reliable manner * A level swivel block with an upper swivel head, rocker, roller bearing and parking brake with effect in the direction of the base frame has great advantages in addition to a simple overall structure.

Zwar ist aus DE-PS 20 36 559 eine wippenartige Jochanlenkung einer fahrbaren Ausziehleiter, insbesondere einer Feuerwehrleiter, bekannt. Die bekannte Jochanlenkung erfordert jedoch während der Drehbewegung auf der schiefen Ebene immer eine Nachstellung der Leiter bzw. des Korbbodens in die waagerechte Ebene.DE-PS 20 36 559 is a rocker-like yoke linkage a mobile pull-out ladder, especially a fire ladder, known. However, the known yoke linkage requires always one during the rotation on the inclined plane Readjust the ladder or the basket floor to the horizontal Level.

Auch die aus der US-PS 4 834 215 bekannte Ausrichtvorrichtung weicht vom Wesen der vorliegenden Erfindung deutlich ab. Insbesondere besitzt die bekannte Ausrichtvorrichtung untere vertikale bodenseitige Abstützzylinder, welche zur Ausregulierung benötigt werden.Also the alignment device known from US Pat. No. 4,834,215 deviates significantly from the essence of the present invention. Especially has the known lower alignment device vertical support cylinders on the bottom, which are used for adjustment are needed.

Schließlich entspricht auch die Ausrichtvorrichtung gemäß DE-A-22 65 165 nicht dem Wesen der Erfindung. Die bekannte Vorrichtung weist nämlich ein allseitig verschwenkbares Kugelgelenklager mit einem über Zylinder verstellbaren Gegenring auf.Finally, the alignment device according to FIG DE-A-22 65 165 is not the essence of the invention. The well-known This is because the device has a ball joint bearing that can be pivoted on all sides with a counter ring adjustable via cylinder on.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügte Zeichnung näher beschrieben; es zeigen:

Fig. 1
ein Feuerwehrfahrzeug mit der Erfindung auf schräger Unterlage bei ausgerichteter Hochachse in schematischer Ansicht von hinten,
Fig. 2
eine schematische Seitenansicht des Erfindungsteils gemäß Fig. 1,
Fig. 3
ein Feuerwehrfahrzeug mit der Erfindung in anderer Ausführungsvariante ähnlich der Fig. 1,
Fig. 4
eine schematische Seitenansicht des Erfindungsteils gemäß Fig. 3,
Fig. 5
das Feuerwehrfahrzeug mit einem Erfindungsteil gesehen von der Seite,
Fig. 6
eine andere Ausführungsvariante des Erfindungsteils ähnlich Fig. 2, wobei die beiden Drehkränze planparallel zueinander verstellt sind, und
Fig. 7
den Erfindungsteil nach Fig. 6 mit nicht planparallelen, verstellten Drehkränzen.
The invention is described below using an exemplary embodiment with reference to the accompanying drawings; show it:
Fig. 1
a fire engine with the invention on an inclined base with aligned vertical axis in a schematic view from behind,
Fig. 2
2 shows a schematic side view of the part of the invention according to FIG. 1,
Fig. 3
a fire engine with the invention in another embodiment variant similar to FIG. 1,
Fig. 4
3 shows a schematic side view of the part of the invention according to FIG. 3,
Fig. 5
the fire engine with a part of the invention seen from the side,
Fig. 6
another embodiment of the inventive part similar to FIG. 2, wherein the two slewing rings are adjusted plane-parallel to each other, and
Fig. 7
6 with non-plane-parallel, adjusted slewing rings.

Das in den Fig. 1 und 2 veranschauliche Feuerwehrfahrzeug umfaßt eine Vorrichtung (10) zum lotrechten Ausrichten der Hochachse (9) eines mit einem Untergestell (11) dreh- und neigungsverstellbaren Aufbaus (7) bestehend aus Lafette und Drehleiter (12).The fire engine illustrated in Figs. 1 and 2 includes a device (10) for the vertical alignment of the Vertical axis (9) one with a base (11) rotatable and inclinable structure (7) consisting of carriage and Turntable ladder (12).

Dem Untergestell (11) des Feuerwehrfahrzeuges ist ein unterer kugelgelagerter Drehkranz (2) zugeordnet, welcher durch einen unteren Drehantrieb (4) verstellt bzw. gedreht werden kann. Der untere Drehantrieb (4) besitzt eine Blockiereinrichtung, um den unteren Drehkranz (2) festzustellen.The base (11) of the fire engine is a lower one ball-bearing slewing ring (2) assigned, which by a lower rotary drive (4) can be adjusted or turned can. The lower rotary drive (4) has a blocking device, to fix the lower slewing ring (2).

Dem dreh- und neigungsverstellbaren Aufbau (7) ist unterseitig ein oberer Drehkranz (8) zugeordnet, welcher durch einen oberen Drehantrieb (3) angetrieben bzw. verstellt werden kann. Unterer (2) und oberer (8) Drehkranz sowie unterer (4) und oberer (3) Drehantrieb sind im wesentlichen gleich ausgebildet. The rotatable and inclinable structure (7) is on the underside an upper turntable (8) assigned by a upper rotary drive (3) can be driven or adjusted can. Lower (2) and upper (8) slewing rings and lower (4) and the upper (3) rotary drive are designed essentially the same.

Zwischen dem unteren Drehkranz (2) und dem oberen Drehkranz (8) befindet sich ein Wippwerk (1 ), welches im wesentlichen aus zwei Scheiben mit daran angeschlossenen Schwenklagern (5) besteht. Im besonderen sind zwei diametral entgegengesetzte Schwenklager (5) vorgesehen, wie dies in Fig. 2 veranschaulicht ist. Beide Schwenklager (5) besitzen die gleiche zentrale Schwenkachse (13).Between the lower slewing ring (2) and the upper slewing ring (8) there is a luffing gear (1), which is essentially consisting of two disks with swivel bearings connected to them (5) consists. In particular, two are diametrically opposite Swivel bearing (5) is provided, as illustrated in Fig. 2 is. Both swivel bearings (5) have the same central one Swivel axis (13).

Das Wippwerk (1) besitzt seinerseits einen Wippantrieb in Form zweier hydraulischer peripherer Stellzylinder (6), welche auf dem Umfang der beiden Drehkränze (2, 8) an diametral entgegengesetzter Stelle befestigt sind, wobei die Schwenkachse (13) des Wippwerks (1) in der Mitte zwischen den beiden Stellzylindern (6) liegt. Der Wippantrieb ist über einen Neigungsfühler ansteuerbar, um die Hochachse (9) des verstellbaren Aufbaus (7) in die lotrechte Lage auszurichten.The luffing gear (1) in turn has a luffing drive in Form of two hydraulic peripheral actuating cylinders (6), which on the circumference of the two slewing rings (2, 8) on diametrically opposite Are fixed, the pivot axis (13) of the luffing gear (1) in the middle between the two actuating cylinders (6) lies. The rocker drive can be controlled via an inclination sensor, about the vertical axis (9) of the adjustable structure (7) in the to align the vertical position.

Ist das Feuerwehrfahrzeug am Boden gemäß Fig. 1 abgestützt, steuert der Neigungsfühler mit Hilfe der Hydraulik die Wippzylinder bzw. die hydraulischen Stellzylinder (6) und die Stellantriebe (3, 4) an und stellt das Arbeitsgerät ins Niveau "Null" wie im einzelnen weiter oben beschrieben. Nach diesem Vorgang wird der untere Stellantrieb (4) kraftschlüssig mit dem Unterbau verbunden. Jetzt kann das Arbeitsgerät bzw. der verstellbare Aufbau (7) mit dem oberen Dreh- oder Stellantrieb (3) auf der waagerechten Ebene endlosdrehen, ohne irgendwelche weiteren Verstellungen vornehmen zu müssen (wie dies beispielsweise nach DE-PS 20 36 559 notwendig ist). If the fire engine is supported on the ground according to FIG. 1, the tilt sensor controls the luffing cylinders with the help of the hydraulics or the hydraulic actuating cylinders (6) and Actuators (3, 4) and puts the implement in Level "zero" as described in detail above. After the lower actuator (4) becomes non-positive during this process connected to the substructure. Now the implement or the adjustable body (7) with the upper rotary or actuator (3) Rotate endlessly on the horizontal plane without any need to make further adjustments (such as this according to DE-PS 20 36 559 is necessary).

In den Fig. 3, 4 und 5 ist die Vorrichtung (10) zum lotrechten Ausrichten der Hochachse (9) in einer anderen Ausführungsvariante gezeigt. Anstelle des unteren Drehkranzes (2) der vorstehend beschriebenen Ausführungsvariante ist eine kostengünstige Kugeldrehverbindung (14) in Form eins Wälzlagers und an die Stelle des unteren Drehantriebs (4) eine Feststellbremse (15) gesetzt, durch welche die Kugeldrehverbindung bezüglich des Untergestells (11) festgestellt werden kann.3, 4 and 5, the device (10) for the vertical Aligning the vertical axis (9) in another embodiment shown. Instead of the lower slewing ring (2) The embodiment variant described above is an economical one Ball slewing ring (14) in the form of a roller bearing and a parking brake in place of the lower rotary drive (4) (15) through which the ball slewing ring is referenced of the base (11) can be determined.

Während des Ausgleichsvorgangs wird zunächst das Wippwerk (1) gedreht, bis sich die Stellzylinder (6) in Fallinie befinden. Hierbei dient die Leiterauflage (16) gemäß Fig. 5 als Gegenhalteeinrichtung für den Aufbau (7) während des Drehvorganges des Wippwerkes (1).During the balancing process, the luffing gear (1) turned until the positioning cylinders (6) are in the fall line. The conductor support (16) according to FIG. 5 serves as a counter-holding device for the structure (7) during the turning process of the luffing gear (1).

Nachdem sich die Stellzylinder (6) in Fallinie befinden, wird die Feststellbremse (15) angezogen.After the actuating cylinders (6) are in the fall line the parking brake (15) is applied.

Nun wird die Drehleiter (12) aufgerichtet. Nach einem Aufrichtwinkel von ca. 5° beginnen die Wipp- oder Stellzylinder zu arbeiten und bringen die Hochachse ins Lot. Nach Erreichen des erforderlichen Niveauregulierungswinkels ist die Leiter in jeder Betriebsstellung ausreguliert und somit auf funktionssichere Weise betriebsbereit * Dies hat einsatztaktisch große Vorteile.Now the aerial ladder (12) is erected. After an upright angle of approx. 5 °, the luffing or positioning cylinders start to work and bring the vertical axis into line. After the required level regulation angle has been reached, the ladder is adjusted in every operating position and is therefore ready for operation in a functionally reliable manner * Tactically, this has great advantages.

Die Vorrichtung (10) zum lotrechten Ausrichten der Hochachse (9) gemäß den Fig. 6 und 7 besitzt anstelle des eingangs erwähnten Wippwerks zumindest einen Stellzylinder (17) zwischen dem oberen Drehkranz (8) und dem unteren Drehkranz (2). Hierbei ist die Kolbenstange (23) des Stellzylinders (17) an einer unteren Befestigungskonsole (24) des oberen Drehkranzes in einem oberen Anlenkpunkt (25) und das andere Ende des Stellzylinders (17) über eine obere Befestigungskonsole (26) des unteren Drehkranzes in einem unteren Anlenkpunkt (27) angelenkt. Beide Befestigungskonsolen (24, 26) sind im wesentlichen gleich ausgebildet. The device (10) for the vertical alignment of the vertical axis (9) according to FIGS. 6 and 7 has instead of the entrance mentioned luffing gear at least one actuating cylinder (17) between the upper slewing ring (8) and the lower slewing ring (2). Here, the piston rod (23) of the actuating cylinder (17) on a lower mounting bracket (24) of the upper one Slewing ring in an upper pivot point (25) and the other End of the actuating cylinder (17) via an upper mounting bracket (26) of the lower slewing ring in a lower articulation point (27) articulated. Both mounting brackets (24, 26) are essentially the same.

Am unteren Drehkranz (2) befinden sich zwei entgegengesetzte Schrägen (18, 19), deren Verlängerungen sich in der senkrechten Mittelachse (20) des unteren Drehkranzes oberhalb desselben schneiden und hierbei sind zwei identische Schrägen (18 bzw. 19) auf jeder Seite der senkrechten Mittelachse (20) vorgesehen. Die Schrägen (18, 19) sind insbesondere in Form von Kulissenführungen separater Bauteile ausgebildet, welche mit dem unteren Drehkranz (2) fest verbunden sind. In den Kulissenführungen (21) - in den Fig. 6 und 7 schematisch in strichpunktierter Linie veranschaulicht - greifen in verschieblicher Weise Bolzen oder Kulisse_nsteine (22) des oberen Drehkranzes (8) ein, so daß der obere Drehkranz nicht abgehoben werden kann. Die Kulissenführungen sind mithin in der Lage, Zug- und Druckkräfte aufzunehmen. Die Gesamtanordnung ist so getroffen, daß in der vollständig eingezogenen Stellung des oder der Stellzylinder (17) oberer Drehkranz (8) und unterer Drehkranz (2) planparallel exakt übereinander mit gleicher Mittelsenkrechten gemäß Fig.6 ausgerichtet sind, während gemäß Fig. 7 der Stellzylinder (17) in seiner vollständig ausgefahrenen Stellung einen maximalen Verstellwinkel zwischen oberem Drehkranz (8) und unterem Drehkranz (2) einrichtet. Der obere Teil wird im Betrieb zwecks lotrechter Ausrichtung der Hochachse immer nur in eine Richtung verschoben, und zwar immer entgegen der Falllinie. Der Vorteil dieser Ausführungsvariante besteht darin, daß geringe Lagerkräfte auftreten durch den größeren Hebelarm und der Kraftverlauf praktisch direkt auf den Unterbau übertragen werden kann.On the lower turntable (2) there are two opposite ones Slopes (18, 19), the extensions of which are in the vertical Central axis (20) of the lower slewing ring above it cut and there are two identical slants (18 or 19) on each side of the vertical central axis (20) intended. The slopes (18, 19) are in particular in shape formed by slide guides of separate components, which are firmly connected to the lower slewing ring (2). In the Setting guides (21) - schematically in FIGS. 6 and 7 illustrated in dash-dotted line - grasp in a slidable manner Wise bolts or backdrops (22) of the upper slewing ring (8) so that the upper slewing ring is not can be lifted off. The backdrop tours are therefore able to absorb tensile and compressive forces. The overall arrangement is taken so that in the fully retracted Position of the control cylinder or cylinders (17) upper The slewing ring (8) and the lower slewing ring (2) are plane-parallel exactly aligned one above the other with the same perpendicular bisector according to FIG. 6 7, while the actuating cylinder (17) according to FIG. a maximum in its fully extended position Adjustment angle between the upper slewing ring (8) and the lower one Set up slewing ring (2). The upper part is in operation for vertical alignment of the vertical axis only in shifted one direction, always against the fall line. The advantage of this variant is that that small bearing forces occur due to the larger lever arm and the force curve practically directly on the substructure can be transferred.

Alle in der Beschreibunq erwähnten und/oder in der Zeichnung dargestellten neuen Merkmale allein oder in sinnvoller Kombination sind erfindungswesentlich, auch soweit sie in den Ansprüchen nicht ausdrücklich beansprucht sind.All mentioned in the description and / or in the drawing presented new features alone or in more meaningful Combination are essential to the invention, also in so far as they are not expressly claimed in the claims.

Claims (19)

  1. Device (10) for perpendicularly aligning the upright axis (9) of a superstructure (7) turnably and inclinably mounted on a substructure (11), for example a rescue appliance with a turntable ladder (12), telescopic or folding tower, with a lower slewing ring (2) rotatable on the substructure (11), an upper slewing ring (8) attached to the underside of the superstructure (7), and a rocker mechanism (1) attached to the lower slewing ring (2), having a pivoting axis (13) running diametrically in relation to the slewing ring,
    characterized in that
    the rocker mechanism (1) is directly connected to the upper slewing ring.
  2. Device according to Claim 1,
    characterized in that
    the rocker mechanism (1) has a central pivoting axis (13) corresponding to the diameter of the two slewing rings (2, 8).
  3. Device according to Claim 2,
    characterized in that
    the rocker mechanism (1) has two peripheral pivoting bearings (5) arranged at diametrically opposite points on the circumference of the two slewing rings (2, 8) (Fig. 2).
  4. Device according to any one of Claims 1 to 3,
    characterized in that
    the rocker mechanism (1) has a rocker drive controlled via an inclination sensor for the perpendicular alignment of the upright axis (9).
  5. Device according to Claim 4,
    characterized in that
    the rocker drive has at least one hydraulic adjusting cylinder (6) outside the central pivoting axis (13).
  6. Device according to Claim 5,
    characterized in that
    two peripheral hydraulic adjusting cylinders (6) are provided, arranged at diametrically opposite points on the circumference of the two slewing rings (2, 8), wherein the pivoting axis (13) lies in the middle between the two adjusting cylinders (6).
  7. Device according to Claim 6,
    characterized in that
    the lower rotary drive (4) of the lower slewing ring (2) has a further level/inclination sensor for setting one adjusting cylinder (6) to the lowest position and the other adjusting cylinder (6) to the highest position.
  8. Device according to Claim 7,
    characterized in that
    the lower rotary drive (4) of the lower slewing ring (2) has an immobilizing device.
  9. Device according to Claim 8,
    characterized in that
    at least the lower rotary drive (4) with the immobilizing device is an electric motor.
  10. Device according to any one of Claims 1 to 9,
    characterized in that
    the two slewing rings (2, 8) have ball bearings.
  11. Device according to any one of Claims 1 to 8,
    characterized in that
    the two slewing rings (2, 8) are essentially of the same design.
  12. Device according to any one of Claims 6 to 11,
    characterized in that
    the two adjusting cylinders (6) are essentially of the same design.
  13. Device according to any one of Claims 1 to 12,
    characterized in that
    during the compensating operation to align the upright axis, the upper (3) and lower (4) rotary drives can be operated simultaneously and oppositely rotating, in such a way that the superstructure (7) does not turn and participates only in the rocking motion.
  14. Device according to any one of Claims 1 to 13,
    characterized in that
    the lower slewing ring (2) is replaced by a rotary ball joint in the form of an antifriction bearing (14), and that, instead of the lower rotary drive (4), the latter has an immobilizing device (15) by which the rotary ball joint can be immobilized relative to the substructure (11).
  15. Device according to Claim 14,
    characterized in that
    a ladder cradle (16) is provided, acting as a counteracting device for the superstructure (7) during the turning operation of the rocker mechanism (1) (cf. Fig. 5).
  16. Device (10) for perpendicularly aligning the upright axis (9) of a superstructure (7) turnably and inclinably mounted on a substructure (11), for example a rescue appliance with turntable ladder (12), telescopic or folding tower, with an upper slewing ring (8) adjustable by means of a rotary drive, said slewing ring being associated with the adjustable superstructure (7).
    characterized in that
    the upper slewing ring (8) is connected to the lower slewing ring turnably and immobilizably mounted on the substructure (11), via two opposite inclines (18) on the lower slewing ring (2), in which the upper slewing ring (18) can be displaced by means of adjusting cylinders (17).
  17. Device according to Claim 16,
    characterized in that
    the extensions of the inclines (18, 19) of the lower slewing ring (2) intersect at the vertical middle axis (20) of the lower slewing ring (2), above the same.
  18. Device according to Claims 16 or 17,
    characterized in that
    two identical inclines (18 and 19) are provided on each side, relative to the vertical middle axis (20).
  19. Device according to any one of Claims 16 to 18,
    characterized in that
    the inclines (18, 19) are link slots (21) in separate components rigidly connected to the lower slewing ring (2), whereby link blocks (22) on the upper slewing ring (8) displaceably engage in the link slots (21).
EP93102929A 1992-03-24 1993-02-25 Device for perpendicularly aligning the upright axis of a superstructure turnably and inclinably mounted on an understructure Expired - Lifetime EP0565833B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE4209513 1992-03-24
DE4209513 1992-03-24
DE4216331 1992-05-16
DE4216331 1992-05-16
DE4303208A DE4303208A1 (en) 1992-03-24 1993-02-04 Device for the vertical alignment of the vertical axis of a structure connected to a base frame so that it can be rotated and tilted
DE4303208 1993-02-04

Publications (2)

Publication Number Publication Date
EP0565833A1 EP0565833A1 (en) 1993-10-20
EP0565833B1 true EP0565833B1 (en) 1999-06-02

Family

ID=27203554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102929A Expired - Lifetime EP0565833B1 (en) 1992-03-24 1993-02-25 Device for perpendicularly aligning the upright axis of a superstructure turnably and inclinably mounted on an understructure

Country Status (4)

Country Link
EP (1) EP0565833B1 (en)
JP (1) JPH0615013A (en)
AT (1) ATE180867T1 (en)
DE (2) DE4303208A1 (en)

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DE4445900A1 (en) * 1994-12-22 1996-06-27 Metz Feuerwehrgeraete Gmbh Terrain compensation device
EP1157897B1 (en) 2000-05-22 2006-01-18 Karl-Heinz Schimmelpfennig Protection frame for road vehicles
DE10035273C1 (en) * 2000-05-22 2001-10-18 Schimmelpfennig Karl Heinz Protective frame arrangement for support frame, for vehicle, has horizontal bars to cover wheels, which are arranged with individual wheel suspensions, where steerable wheels have curved wheel supports
DE20304208U1 (en) 2003-03-17 2003-06-12 Hegla Fahrzeug- Und Maschinenbau Gmbh & Co Kg, 37688 Beverungen Safety device for (un)loading of vehicle fitted inclined, or inclinable, holding frame for plate-like objects, such as glass panes, comprises inclination gauge generating signal for triggering an (un)loading lock
DE10353134A1 (en) * 2003-11-14 2005-06-09 Marte Feuerwehrfahrzeuge Feuerwehrtechnologie Ges.M.B.H. Rescue device
FR2924703B1 (en) * 2007-12-11 2010-01-15 Gimaex Internat AERIAL LIFTING DEVICE AND VEHICLE EQUIPPED WITH SUCH A DEVICE
EP2177709B1 (en) * 2008-10-17 2011-06-01 Iveco Magirus Ag Turntable ladder set with a levelling device for the rotatable superstructure
CN102937139B (en) * 2012-11-14 2015-04-01 长沙中联消防机械有限公司 Pivoting support, boom system and elevating fire truck
CN103963872B (en) * 2014-04-30 2016-03-23 中联重科股份有限公司 Trailer and engineering machinery comprising same
BE1024690B1 (en) * 2016-10-24 2018-05-29 Steve Florquin Extendable bridge device and truck
CN110258708A (en) * 2019-06-04 2019-09-20 甘肃酒钢集团宏兴钢铁股份有限公司 The replacing options of 4 vertical shovel centerpivots
CN114253277B (en) * 2022-02-28 2022-07-05 徐工消防安全装备有限公司 Work device control system and method for work vehicle, and work vehicle

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DE2265155B2 (en) * 1972-06-06 1978-09-14 Carl Metz Gmbh, 7500 Karlsruhe Mobile turntable ladder
DE2265199C2 (en) * 1972-06-06 1982-07-22 Carl Metz Gmbh, 7500 Karlsruhe Mobile turntable ladder
AT388154B (en) * 1984-08-23 1989-05-10 Morita Fire Pump Mfg TURNING BLOCK FOR A VEHICLE FOR CARRYING OUT WORK AT UPPER SITES
US4834215A (en) * 1988-06-10 1989-05-30 Smeal Donald L Leveling aerial device-motor vehicle assembly

Also Published As

Publication number Publication date
DE59309621D1 (en) 1999-07-08
EP0565833A1 (en) 1993-10-20
ATE180867T1 (en) 1999-06-15
DE4303208A1 (en) 1993-09-30
JPH0615013A (en) 1994-01-25

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