EP0247583B1 - Pushing frame for a front-loading implement at a motor vehicle - Google Patents

Pushing frame for a front-loading implement at a motor vehicle Download PDF

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Publication number
EP0247583B1
EP0247583B1 EP87107675A EP87107675A EP0247583B1 EP 0247583 B1 EP0247583 B1 EP 0247583B1 EP 87107675 A EP87107675 A EP 87107675A EP 87107675 A EP87107675 A EP 87107675A EP 0247583 B1 EP0247583 B1 EP 0247583B1
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EP
European Patent Office
Prior art keywords
vehicle
pushing frame
axis
frame
lever
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Expired - Lifetime
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EP87107675A
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German (de)
French (fr)
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EP0247583A1 (en
Inventor
Michael Rossmann
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Individual
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Individual
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Priority to AT87107675T priority Critical patent/ATE57551T1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7609—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers
    • E02F3/7613—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers with the scraper blade adjustable relative to the pivoting arms about a vertical axis, e.g. angle dozers

Definitions

  • the invention relates to a push frame for front working tools on motor vehicles, which transmits the thrust of the front working tool under the vehicle through to the trailer coupling of the vehicle and in front of the vehicle front axle on both sides of the vehicle longitudinal axis on the vehicle chassis via chains, ropes or the like and hooks provided on these hooks and on the other hand, can be centered with respect to the longitudinal axis of the vehicle via a transverse guide rod.
  • Such a push frame is known from DE-OS 31 49 436.
  • This push frame is particularly suitable for normal passenger cars, since on the one hand only very low torsional forces act on the chassis and on the other hand practically no connecting devices are required on the motor vehicle itself.
  • a single connecting bracket for a transverse guide rod on one of the support bars for the front bumper is sufficient.
  • the front part of the drawer frame is also hung on these support bars using hooks.
  • the push frame according to the cited document has a frame with two longitudinal spars which are connected to one another at the front in the area of the cable pull via a cross strut. Deflection pulleys for the cable are located on the cross strut, which is at least as wide as the distance between the two suspension points of the frame on the support bars of the bumper.
  • the object of the present invention is therefore to improve the push frame known from DE-OS 31 49 436 in such a way that the front suspension of the frame on the vehicle chassis can do without fault-prone cable or chain hoists and that the effect of impacts and impacts from the Front work tool, the front suspension is largely reduced.
  • the frame part that transmits the thrust force consists of three telescoping tubes 1, 2, 3, which are plugged together with the aid of bolts 13, with several through holes being provided in order to be able to adapt the frame part to different vehicle lengths.
  • This frame part extends from the trailer hitch 7 of a motor vehicle under it to a snow plow share 11 in front of the motor vehicle.
  • a sweeper, snow blower or another front working device could also be coupled.
  • the vehicle is only indicated schematically in the figures, namely by its wheels 21, the front wheel axle 20, the rear wheel axle 22 and by the mentioned trailer coupling 7 and by sections of the two support bars 6 to which the front bumper is attached.
  • a resilient shock absorber 15 is attached, which resists the displacement of a parallelogram 16.
  • This parallelogram is connected on the one hand to the usual coupling element 14 for the spherical trailer coupling 7 and on the other hand via a sleeve 23 to the end of the push frame part 3.
  • the sleeve sits loosely on this end in the direction of rotation and can be locked in the coupling position by means of a plunger 17.
  • the parallelogram can also lie flat on the floor with a view to safely driving over the frame with the vehicle. In the operating position, the parallelogram does not necessarily have to be vertical, but the frame parts 1 to 3 can also run slightly obliquely with respect to the vehicle axis under the vehicle. This is particularly advantageous if the vehicle chassis has reduced ground clearance in the middle due to a transmission tunnel.
  • the front frame part 1 is ver in the area in front of the vehicle front axle with a bearing block 12 in one of several possible positions screws.
  • a cross guide rod 4 which is adjustable in length and can be coupled via a bolt 18 to a bracket 5 on the vehicle chassis 6, and on the other hand via two chains 8, the can be hooked into the support bars 6 for the front bumper.
  • the chains 8 are short and connect the hooks to the free end of a lever 10, which is articulated on a swivel bracket 19 via a horizontal swivel axis.
  • the swivel bracket in turn, is articulated on the bearing block 12 via a vertical swivel axis 24, so that the levers 10 can be moved both upwards and downwards and also forwards and backwards.
  • the first-mentioned movement is effected by a power cylinder 9, which is inserted between the tab 19 and the lever 10, while the second-mentioned movement takes place freely.
  • a power cylinder 9 which is inserted between the tab 19 and the lever 10
  • the second-mentioned movement takes place freely.
  • Fig. 3 one of these arms 10 is shown in four different positions C, D, E and F.
  • position C the arm is parallel to the vehicle axis, which reduces the space required for the frame in the depot.
  • the position E is the normal operating position and the positions D and F can arise briefly during operation if hard impacts are exerted on the implement and the shock absorber 15 takes effect.
  • Fig. 2 which is a sectional view of the drawer from the front, i.e. in front of the bearing block 12, two different positions A and B of the lever 10 can be seen, which are caused by the power cylinder 9.
  • Position A is selected for driving over the push frame before coupling to the vehicle.
  • the front working implement stands on the ground, and the frame parts 1 to 3 are located near the ground, while the free ends of the levers 10 are directed slightly upwards without disturbing the vehicle being run over.
  • the chains 8 are suspended in one of several holes at the free end of the lever 10 and thus adapted to the vehicle width or the distance between the support bars of the front bumper 6 of the vehicle.
  • the power cylinders are pressurized so that they lower the lever 10 and thus lift the push frame and the implement from the floor. In this position, a defined area of the frame parts 1 to 3 presses against the chassis from below. For snow removal operation, the pressure from the power cylinders 9 is relieved, so that the front working implement sinks to the ground due to gravity.
  • the inventive front suspension of the push frame on the vehicle chassis largely prevents thrust forces being transmitted to the front suspension and the chassis in the event of sudden impacts.
  • the levers 10 rather pivot with the brackets 19 about the pivot axes 24.
  • the power cylinders With the power cylinders, a trouble-free vertical movement of the push frame with respect to the vehicle chassis can be achieved even in hard winter operation, not only during the coupling process, but also later in operation, e.g. to drive over a fixed obstacle.
  • the ploughshare itself therefore does not require its own hydraulic lifting devices.
  • the invention is not restricted in all details to the preferred embodiment shown. So the working cylinders could be operated pneumatically or hydraulically, and instead of the chains 8 short pieces of rope or rigid connecting elements could be used. In addition, the front suspension of the chains 8 and the transverse guide rod could be carried out on chassis parts other than the support bars of the bumper.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

The thrust coupling has a thrust frame formed of three tubular sections which is mounted on the underside of a vehicle. The front of the thrust frame is suspended by chains from the front of the vehicle and can be raised and lowered by hydraulic cylinders connected to cross arms attached to the chains. The rear of the thrust frame is connected by a parallelogram arrangement of links in which a shock absorber is connected to dampen motion of the parallelogram arrangement of links.

Description

Die Erfindung bezieht sich auf ein Schubgestell für Frontarbeitsgeräte an Kraftfahrzeugen, das die Schubkraft des Frontarbeitsgeräts unter dem Fahrzeug hindurch auf die Anhängerkupplung des Fahrzeugs überträgt und vor der Fahrzeugvorderachse einerseits beidseitig der Fahrzeuglängsachse am Fahrzeugchassis über Ketten, Seile oder dergleichen und an diesen vorgesehene Haken einhängbar sowie andererseits über einen Querführungsstab bezüglich der Fahrzeuglängsachse zentrierbar ist.The invention relates to a push frame for front working tools on motor vehicles, which transmits the thrust of the front working tool under the vehicle through to the trailer coupling of the vehicle and in front of the vehicle front axle on both sides of the vehicle longitudinal axis on the vehicle chassis via chains, ropes or the like and hooks provided on these hooks and on the other hand, can be centered with respect to the longitudinal axis of the vehicle via a transverse guide rod.

Ein solches Schubgestell ist aus der DE-OS 31 49 436 bekannt. Dieses Schubgestell eignet sich insbesondere für normale Personenkraftwagen, da einerseits nur sehr geringe Verwindungskräfte auf das Fahrgestell einwirken und andererseits am Kraftfahrzeug selbst praktisch keine Anschlußvorrichtungen benötigt werden. Es genügt nämlich eine einzige Anschlußlasche für einen Querführungsstab an einem der Tragholme für die vordere Stoßstange. An diesen Tragholmen wird auch der vordere Teil des Schubgestells über Haken aufgehängt.Such a push frame is known from DE-OS 31 49 436. This push frame is particularly suitable for normal passenger cars, since on the one hand only very low torsional forces act on the chassis and on the other hand practically no connecting devices are required on the motor vehicle itself. A single connecting bracket for a transverse guide rod on one of the support bars for the front bumper is sufficient. The front part of the drawer frame is also hung on these support bars using hooks.

Die Aufhängung erfolgt über einen Seilzug und elektrische, pneumatische oder hydraulische Motoren, mit denen das Frontarbeitsgerät einschließlich der Schubkupplung vor und nach der Arbeit oder zur Überwindung von Hindernissen angehoben werden kann.It is suspended using a cable pull and electric, pneumatic or hydraulic motors, which can be used to raise the front implement, including the push coupling, before and after work or to overcome obstacles.

Das Schubgestell gemäß der genannten Druckschrift besitzt einen Rahmen mit zwei Längsholmen, die vorne im Bereich des Seilzugs über eine Querstrebe miteinander verbunden sind. An der Querstrebe, die mindestens so breit wie der Abstand zwischen den beiden Aufhängepunkten des Rahmens an den Trageholmen der Stoßstange ist, befinden sich Umlenkrollen für den Seilzug.The push frame according to the cited document has a frame with two longitudinal spars which are connected to one another at the front in the area of the cable pull via a cross strut. Deflection pulleys for the cable are located on the cross strut, which is at least as wide as the distance between the two suspension points of the frame on the support bars of the bumper.

Im Betrieb, insbesondere im rauhen Winterbetrieb mit einer Schneepflugschar als Frontarbeitsgerät, hat sich herausgestellt, daß der Seilzug störanfällig ist. Die Umlenkrollen können vereisen und blockieren, und der Seilzug oder Kettenzug kann durch mitgerissene Fremdkörper beeinträchtigt werden. Weiter hat sich die starre Querstrebe, an der die Umlenkrollen befestigt sind, als nachteilig erwiesen, da sie eine freie Längsbewegung des vorderen Teils des Schubrahmens erschwert, die insbesondere dann erwünscht ist, wenn der Schubrahmen mit einem Federelement oder einem Stoßdämpfer versehen ist, mit dem die Übertragung harter Schläge auf die Anhängerkupplung verhindert werden soll.In operation, especially in the harsh winter with a snow plow share as a front working device, it has been found that the cable pull is prone to failure. The pulleys can freeze and block, and the cable or chain hoist can be affected by foreign objects that are entrained. Furthermore, the rigid cross strut to which the deflection rollers are fastened has proven to be disadvantageous because it complicates a free longitudinal movement of the front part of the push frame, which is particularly desirable when the push frame is provided with a spring element or a shock absorber with which the transmission of hard impacts to the trailer hitch should be prevented.

Aufgabe der vorliegenden Erfindung ist es daher, das aus der DE-OS 31 49 436 bekannte Schubgestell so zu verbessern, daß die vordere Aufhängung des Gestells am Fahrzeugchassis auf störanfällige Seil- oder Kettenzüge verzichten kann und daß die Wirkung von Stößen und Schlägen, die vom Frontarbeitsgerät herrühren, auf die vordere Aufhängung weitgehend verringert wird.The object of the present invention is therefore to improve the push frame known from DE-OS 31 49 436 in such a way that the front suspension of the frame on the vehicle chassis can do without fault-prone cable or chain hoists and that the effect of impacts and impacts from the Front work tool, the front suspension is largely reduced.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Ketten, Seile oder dergleichen an das freie Ende je eines einseitig am Schubgestell angelenkten Hebels angekoppelt sind, der mit einem Kraftzylinder derart zusammenwirkt, daß der Hebel durch den Kraftzylinder um seine waagrechte Gelenkachse schwenkbar ist, und daß jeder Hebel sowie der ihm zugeordnete Kraftzylinder an einer Schwenklasche angelenkt ist, die ihrerseits um eine senkrechte Schwenkachse beweglich am die Schubkraft übertragenden Schubgestell befestigt ist, wobei ein Stoßdämpfer zur Dämpfung von in Achsrichtung des Schubgestells verlaufenden Stößen vorgesehen ist.This object is achieved in that the chains, ropes or the like are coupled to the free end of a lever articulated on one side on the push frame, which cooperates with a power cylinder such that the lever can be pivoted about its horizontal hinge axis by the power cylinder, and that each lever and the power cylinder assigned to it is articulated on a swivel bracket, which in turn is attached to the thrust frame that transmits the thrust force and can be moved about a vertical swivel axis, a shock absorber being provided for damping shocks that run in the axial direction of the push frame.

Die Erfindung wird nun anhand eines bevorzugten Ausführungsbeispiels mithilfe der Zeichnungen näher erläutert.

  • Fig. 1 zeigt in Perspektive ein erfindungsgemäßes Schubgestell mit einer Schneepflugschar als Frontarbeitsgerät.
  • Fig. 2 zeigt eine Schnittansicht desselben Gestells.
  • Fig. 3 zeigt eine Aufsicht auf den vorderen Teil des Gestells mit angebauter Schneepflugschar.
The invention will now be explained in more detail based on a preferred embodiment with the aid of the drawings.
  • Fig. 1 shows in perspective a push frame according to the invention with a snow plow share as a front working device.
  • Fig. 2 shows a sectional view of the same frame.
  • Fig. 3 shows a top view of the front part of the frame with attached snow ploughshare.

Das die Schubkraft übertragende Gestellteil besteht aus drei teleskopartig ineinandergeschobenen Rohren 1, 2, 3, die mithilfe von Bolzen 13 zusammengesteckt sind, wobei mehrere Durchstecklöcher vorhanden sind, um das Gestellteil unterschiedlichen Fahrzeuglängen anpassen zu können. Dieses Gestellteil erstreckt sich von der Anhängerkupplung 7 eines Kraftfahrzeugs unter diesem hindurch bis zu einer Schneepflugschar 11 vor dem Kraftfahrzeug. Statt der Schneepflugschar, die starr mit dem vorderen Gestellteil 1 koppelbar ist, könnte auch eine Kehrmaschine, Schneeschleuder oder ein anderes Frontarbeitsgerät angekoppelt werden.The frame part that transmits the thrust force consists of three telescoping tubes 1, 2, 3, which are plugged together with the aid of bolts 13, with several through holes being provided in order to be able to adapt the frame part to different vehicle lengths. This frame part extends from the trailer hitch 7 of a motor vehicle under it to a snow plow share 11 in front of the motor vehicle. Instead of the snow ploughshare, which can be rigidly coupled to the front frame part 1, a sweeper, snow blower or another front working device could also be coupled.

Das Fahrzeug ist in den Figuren nur schematisch angedeutet, und zwar durch seine Rädar 21, die vordere Radachse 20, die hintere Radachse 22 sowie durch die erwähnte Anhängerkupplung 7 und durch Abschnitte der beiden Tragholme 6, an denen die vordere Stoßstange befestigt ist.The vehicle is only indicated schematically in the figures, namely by its wheels 21, the front wheel axle 20, the rear wheel axle 22 and by the mentioned trailer coupling 7 and by sections of the two support bars 6 to which the front bumper is attached.

Am hinteren Ende des Schubgestells ist ein federnder Stoßdämpfer 15 angebracht, der sich der Verschiebung eines Parallelogramms 16 widersetzt. Dieses Parallelogramm ist einerseits mit dem üblichen Koppelelement 14 für die kugelförmige Anhängerkupplung 7 und andererseits über eine Hülse 23 mit dem Ende des Schubgestellteils 3 verbunden. Die Hülse sitzt in Drehrichtung lose auf diesem Ende und kann mithilfe eines Stößels 17 in der Koppelstellung arretiert werden. Das Parallelogramm kann auch in Hinblick auf ein gefahrenloses Überfahren des Gestells mit dem Fahrzeug flach auf dem Boden liegen. In der Betriebsstellung braucht das Parallelogramm nicht unbedingt senkrecht zu stehen, sondern die Gestellteile 1 bis 3 können auch leicht schräge bezüglich der Fahrzeugachse unter dem Fahrzeug hindurch verlaufen. Dies ist insbesondere von Vorteil, wenn das Fahrzeugchassis in der Mitte durch einen Getriebetunnel eine verringerte Bodenfreiheit besitzt.At the rear end of the push frame, a resilient shock absorber 15 is attached, which resists the displacement of a parallelogram 16. This parallelogram is connected on the one hand to the usual coupling element 14 for the spherical trailer coupling 7 and on the other hand via a sleeve 23 to the end of the push frame part 3. The sleeve sits loosely on this end in the direction of rotation and can be locked in the coupling position by means of a plunger 17. The parallelogram can also lie flat on the floor with a view to safely driving over the frame with the vehicle. In the operating position, the parallelogram does not necessarily have to be vertical, but the frame parts 1 to 3 can also run slightly obliquely with respect to the vehicle axis under the vehicle. This is particularly advantageous if the vehicle chassis has reduced ground clearance in the middle due to a transmission tunnel.

Das vordere Gestellteil 1 ist im Bereich vor der Fahrzeugvorderachse mit einem Lagerbock 12 in einer von mehreren möglichen Stellungen verschraubt. Über diesen Lagerbock erfolgt die vordere Aufhängung des Gestells am Chassis, und zwar einerseits über einen Querführungsstab 4, der in seiner Länge einstellbar ist und über einen Bolzen 18 an eine Lasche 5 am Fahrzeugchassis 6 angekoppelt werden kann, und andererseits über zwei Ketten 8, die über Haken in die Tragholme 6 für die vordere Stoßstange eingehängt werden können. Die Ketten 8 sind nur kurz und verbinden die Haken mit dem freien Ende je eines Hebels 10, der an einer Schwenklasche 19 über eine waagerechte Schwenkachse angelenkt ist. Die Schwenklasche ihrerseits ist über eine senkrechte Schwenkachse 24 am Lagerbock 12 angelenkt, so daß die Hebel 10 sowohl nach oben und unten als auch nach vorne und hinten bewegt werden können. Die erstgenannte Bewegung wird durch je einen Kraftzylinder 9 bewirkt, der zwischen der Lasche 19 und dem Hebel 10 eingefügt ist, während die zweitgenannte Bewegung frei erfolgt. In Fig. 3 ist einer dieser Arme 10 in vier verschiedenen Stellungen C, D, E und F dargestellt. In der Stellung C liegt der Arm parallel zur Fahrzeugachse, wodurch der Raumbedarf für das Gestell im Depot verringert wird. Die Stellung E ist die normale Betriebsstellung und die Stellungen D und F können sich im Betrieb kurzzeitig ergeben, falls harte Schläge auf das Arbeitsgerät ausgeübt werden und der Stoßdämpfer 15 wirksam wird.The front frame part 1 is ver in the area in front of the vehicle front axle with a bearing block 12 in one of several possible positions screws. About this bracket the front suspension of the frame on the chassis takes place, on the one hand via a cross guide rod 4, which is adjustable in length and can be coupled via a bolt 18 to a bracket 5 on the vehicle chassis 6, and on the other hand via two chains 8, the can be hooked into the support bars 6 for the front bumper. The chains 8 are short and connect the hooks to the free end of a lever 10, which is articulated on a swivel bracket 19 via a horizontal swivel axis. The swivel bracket, in turn, is articulated on the bearing block 12 via a vertical swivel axis 24, so that the levers 10 can be moved both upwards and downwards and also forwards and backwards. The first-mentioned movement is effected by a power cylinder 9, which is inserted between the tab 19 and the lever 10, while the second-mentioned movement takes place freely. In Fig. 3 one of these arms 10 is shown in four different positions C, D, E and F. In position C, the arm is parallel to the vehicle axis, which reduces the space required for the frame in the depot. The position E is the normal operating position and the positions D and F can arise briefly during operation if hard impacts are exerted on the implement and the shock absorber 15 takes effect.

In Fig. 2, die eine Schnittansicht auf das Schubgestell von vorne, d.h. vor dem Lagerbock 12, zeigt, sind zwei verschiedene Stellungen A und B der Hebel 10 zu erkennen, die durch die Kraftzylinder 9 bewirkt werden. Die Stellung A wird für das Überfahren des Schubgestells vor dem Ankoppeln an das Fahrzeug gewählt. Das Frontarbeitsgerät steht dabei auf dem Boden auf, und die Gestellteile 1 bis 3 befinden sich in der Nähe des Bodens, während die freien Enden der Hebel 10 leicht nach oben gerichtet sind, ohne das Überfahren mit dem Fahrzeug zu stören. Die Ketten 8 sind in eines von mehreren Löchern am freien Ende der Hebel 10 eingehängt und somit an die Fahrzeugbreite bzw. den Abstand der Tragholme der vorderen Stoßstange 6 des Fahrzeugs angepaßt. Da die freien Enden der Hebel nach oben zeigen, können die am Ende der kurze Kette 8 befindlichen Haken leicht in die Tragholme 6 eingehängt werden, nachdem zuvor das hintere Ende des Gestells in die Anhängerkupplung 7 eingehängt worden ist. Nun wird der Querführungsstab 4 an eine vorbereitete Lasche 5 des Chassis mithilfe eines Bolzens 18 angekoppelt.In Fig. 2, which is a sectional view of the drawer from the front, i.e. in front of the bearing block 12, two different positions A and B of the lever 10 can be seen, which are caused by the power cylinder 9. Position A is selected for driving over the push frame before coupling to the vehicle. The front working implement stands on the ground, and the frame parts 1 to 3 are located near the ground, while the free ends of the levers 10 are directed slightly upwards without disturbing the vehicle being run over. The chains 8 are suspended in one of several holes at the free end of the lever 10 and thus adapted to the vehicle width or the distance between the support bars of the front bumper 6 of the vehicle. Since the free ends of the levers point upwards, the hooks located at the end of the short chain 8 can easily be hooked into the support bars 6 after the rear end of the frame has been hooked into the trailer coupling 7. Now the cross guide rod 4 is coupled to a prepared tab 5 of the chassis using a bolt 18.

Für die Fahrt zum Einsatzort werden die Kraftzylinder mit Druck beaufschlagt, so daß sie die Hebel 10 absenken und damit das Schubgestell und das Arbeitsgerät vom Boden abheben. In dieser Lage drückt ein definierter Bereich der Gestellteile 1 bis 3 von unten gegen das Chassis. Für den Schneeräumbetrieb wird der Druck aus den Kraftzylindern 9 entlastet, so daß das Frontarbeitsgerät durch die Schwerkraft auf den Boden absinkt.For the journey to the place of use, the power cylinders are pressurized so that they lower the lever 10 and thus lift the push frame and the implement from the floor. In this position, a defined area of the frame parts 1 to 3 presses against the chassis from below. For snow removal operation, the pressure from the power cylinders 9 is relieved, so that the front working implement sinks to the ground due to gravity.

Durch die erfindungsgemäße vordere Aufhängung des Schubgestells am Fahrzeugchassis wird einerseits weitgehend verhindert, daß Schubkräfte bei plötzlichen Stößen auf die vordere Aufhängung und das Chassis übertragen werden. In diesem Fall schwenken vielmehr die Hebel 10 mit den Laschen 19 um die Schwenkachsen 24. Mithilfe der Kraftzylinder läßt sich auch im harten Winterbetrieb eine störungsfreie Vertikalbewegung des Schubrahmens bezüglich des Fahrzeugchassis erreichen, und zwar nicht nur während des Koppelvorgangs, sondern auch später im Betrieb, z.B. zum Überfahren eines festen Hindernisses. Die Pflugschar selbst benötigt hierzu also keine eigenen hydraulischen Hubvorrichtungen.The inventive front suspension of the push frame on the vehicle chassis largely prevents thrust forces being transmitted to the front suspension and the chassis in the event of sudden impacts. In this case, the levers 10 rather pivot with the brackets 19 about the pivot axes 24. With the power cylinders, a trouble-free vertical movement of the push frame with respect to the vehicle chassis can be achieved even in hard winter operation, not only during the coupling process, but also later in operation, e.g. to drive over a fixed obstacle. The ploughshare itself therefore does not require its own hydraulic lifting devices.

Die Erfindung ist nicht in allen Einzelheiten auf die dargestellte bevorzugte Ausführungsform beschränkt. So könnten die Arbeitszylinder pneumatisch oder hydraulisch betätigt werden, und statt der Ketten 8 könnten kurze Seilstücke oder auch starre Verbindungselemente Verwendung finden. Außerdem könnte die vordere Aufhängung der Ketten 8 und des Querführungsstabs an anderen Chassisteilen als den Tragholmen der Stoßstange erfolgen.The invention is not restricted in all details to the preferred embodiment shown. So the working cylinders could be operated pneumatically or hydraulically, and instead of the chains 8 short pieces of rope or rigid connecting elements could be used. In addition, the front suspension of the chains 8 and the transverse guide rod could be carried out on chassis parts other than the support bars of the bumper.

Claims (2)

1. A pushing frame (1, 2, 3) for attaching a front loading tool (11) to a motor vehicle, which pushing frame transfers the pushing force of the tool (11) under the vehicle rearwards to the hitch (7) of the ve- hide and which can be attached to the vehicle chassis (16) on the one hand on both sides via chains, cables or the like (8), and hooks associated therewith, and on the other hand can be centered with respect to the longitudinal vehicle axis via a transverse guide rod (4), characterized in that the chains, cables or the like (8) are coupled to the free end of a respective lever (10) which is articulated at one end on the pushing frame (1, 2, 3) and which cooperates with a jack (9) in such a way that the lever (10) may be pivoted by the jack (9) about its horizontal articulation axis, and that each lever (10) and its associated jack (9) are articulated at a pivoting strap (19) which itself is mounted on the pushing frame transferring the pushing force in such a manner that it can be pivoted about a vertical articulation axis (24), a shock absorber (15) being provided for absorbing impacts exerted along the axis of the pushing frame (1, 2, 3).
2. A pushing frame according to claim 1, characterized in that it may be coupled via a coupling member (14) to the hitch (7) of the vehicle and that this coupling member may be pivoted about an axis parallel to the vehicle axis and may be locked in at least two pivoting positions, one of which allows the vehicle to pass over the pushing frame (1, 2, 3) and the other is a coupling position in which the axis of the pushing frame (1, 2, 3) is disposed alongside the axis of the vehicle and underneath the latter.
EP87107675A 1986-05-27 1987-05-26 Pushing frame for a front-loading implement at a motor vehicle Expired - Lifetime EP0247583B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107675T ATE57551T1 (en) 1986-05-27 1987-05-26 PUSH FRAME FOR FRONT WORK EQUIPMENT ON MOTOR VEHICLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863617708 DE3617708A1 (en) 1986-05-27 1986-05-27 DRAWER FOR FRONT WORK UNITS ON MOTOR VEHICLES
DE3617708 1986-05-27

Publications (2)

Publication Number Publication Date
EP0247583A1 EP0247583A1 (en) 1987-12-02
EP0247583B1 true EP0247583B1 (en) 1990-10-17

Family

ID=6301679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107675A Expired - Lifetime EP0247583B1 (en) 1986-05-27 1987-05-26 Pushing frame for a front-loading implement at a motor vehicle

Country Status (4)

Country Link
US (1) US4790085A (en)
EP (1) EP0247583B1 (en)
AT (1) ATE57551T1 (en)
DE (2) DE3617708A1 (en)

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US5809672A (en) * 1997-04-25 1998-09-22 Burke Truck & Equipment Manually actuated laterally positionable wing plow yoke
US5988294A (en) * 1997-12-09 1999-11-23 Hubscher; Darin Cultivator
US6594923B1 (en) 1999-11-29 2003-07-22 The Louis Berkman Company Snowplow mount
DE10013480C2 (en) * 2000-03-18 2002-04-04 Schmidt Holding Gmbh Carrying device for the attachment of an attachment to a carrier vehicle
US6651529B1 (en) 2002-07-02 2003-11-25 Hydro-Gear Limited Partnership Hydrostatic transmission
US7219453B2 (en) * 2003-01-24 2007-05-22 Baker Robert E Floatdown implement for small vehicles
US6931770B2 (en) * 2003-02-19 2005-08-23 Luc Belzile Front equipment mount for a wheeled vehicle
US7302765B1 (en) * 2004-09-20 2007-12-04 Quick Attach Attachments, Inc. Implement attaching apparatus
US20060283053A1 (en) * 2005-06-16 2006-12-21 Hickenbottom Ronald J Mounting assembly for a vehicle
US20070084089A1 (en) * 2005-10-19 2007-04-19 Snowbear Limited Mounting assembly for coupling snowplow or the like to a vehicle
US7343725B2 (en) * 2006-06-26 2008-03-18 The United States Of America As Represented By The Secretary Of The Army Cutting attachment for vehicle
US7347038B1 (en) * 2006-08-04 2008-03-25 United States Of America As Represented By The Secretary Of The Army Enhanced fore-aft movement cutting attachment
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US7849614B2 (en) * 2007-02-16 2010-12-14 Swisher Acquisition, Inc. Universal front and rear equipment mount for ATV
US8117812B2 (en) * 2007-08-28 2012-02-21 Macdon Industries Ltd. Header transport
US9131637B2 (en) * 2009-08-26 2015-09-15 Kalvin Jit Singh Apparatus for transferring load

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Also Published As

Publication number Publication date
EP0247583A1 (en) 1987-12-02
ATE57551T1 (en) 1990-11-15
US4790085A (en) 1988-12-13
DE3765579D1 (en) 1990-11-22
DE3617708A1 (en) 1987-12-03

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