EP0978592B1 - Loader and vehicle with a loader - Google Patents

Loader and vehicle with a loader Download PDF

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Publication number
EP0978592B1
EP0978592B1 EP99114042A EP99114042A EP0978592B1 EP 0978592 B1 EP0978592 B1 EP 0978592B1 EP 99114042 A EP99114042 A EP 99114042A EP 99114042 A EP99114042 A EP 99114042A EP 0978592 B1 EP0978592 B1 EP 0978592B1
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EP
European Patent Office
Prior art keywords
strut
loader
parking
prop
stop
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
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EP99114042A
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German (de)
French (fr)
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EP0978592A1 (en
Inventor
Lionel Guiet
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Deere and Co
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Deere and Co
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Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP0978592A1 publication Critical patent/EP0978592A1/en
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Publication of EP0978592B1 publication Critical patent/EP0978592B1/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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • E02F3/6273—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor using legs to support the beams or arms on the ground during the connecting process

Definitions

  • the invention relates to a loader with at least one loader arm, a parking support and a strut, wherein the parking support is mounted pivotably about a first pivot axis and the strut about a second, spaced from the first pivot axis pivot axis on the loader, and with securing means for releasable Securing the parking support against pivoting relative to the loader arm in a transport position, wherein the strut has a support member which can be supported in released parking in a parking position on the parking support, as well as on a vehicle with such a loader.
  • FR-A-1 587 734 shows a loader with a loader arm and a jacking support pivotally mounted on the loader arm.
  • a strut with one of its end portions is pivotally mounted, which engages over a provided at its opposite end, slidably mounted on the parking sleeve sleeve on the parking support.
  • Loaders are used on agricultural or industrial vehicles, such as farm tractors. They are often provided on the front of the vehicle, but may also be attached to the rear side. If the loader is not needed, it can be removed from the vehicle and parked. For this purpose, have known loader, such as a generic loader series Q of ⁇ lö (Prospectus no. 11 24 575) Abstell aboutn on. The loader rests on the one hand on a shovel and on the other hand on the loader arms pivotally mounted Abstell Georgian. When the loader is mounted, the parking supports are in a folded-up position, in which they rest on the loader arm and the like in the usual way by securing bolts. be secured not to interfere with working with the loader.
  • a strut is pivotally mounted on the loader arm.
  • the strut has a support member with which it is supported after folding down the parking support on the edge of an opening in the parking support.
  • the support member in the usual manner, for example by means of the already to ensure between the edge and the support member, the support member is secured in the usual manner, for example by means of the aforementioned locking bolt in the opening.
  • a loader has at least one loader arm, a parking support and a strut.
  • the parking support is mounted pivotably about a first pivot axis and the strut about a second pivot axis on the loader arm.
  • the first and second pivot axes are spaced from each other.
  • the loader arm has securing means for releasably securing the parking support against pivoting relative to the loader arm when the parking support is in a transport position, ie in its raised position, on the loader arm.
  • the strut has a support member which can be supported on the parking support with dissolved securing means, ie, when the loader or the parking support are in a parked position.
  • the parking support has a stop on which the strut rests in the transport position, wherein the Stop is arranged at least in the transport position between the strut and the loader.
  • the Stop is arranged at least in the transport position between the strut and the loader.
  • the stop abuts against the strut during the flip-up movement and slides along it, so that the parking support is pivoted about its point of articulation. Subsequently, the strut is secured in its transport position and thus also determines the parking support in this position. The parking support is thus brought into its transport position, without that they themselves must be operated directly. It is sufficient if the strut is pivoted for example by an operator.
  • loaders have two loader arms, which are arranged on the right and left side of a vehicle and connected to this detachably, for example via a mounting frame. But it is also a loader with only one loader conceivable.
  • all loader arms can be provided with Abstell basic structure, but it is also conceivable to provide only a portion of the loader arms or only a single loader with one or more parking supports, if this ensures the stability of the parked loader is sufficiently ,
  • a second stop may be provided, which is spaced from the first stop.
  • the strut extends at least in the transport position between the first stop and the second stop, whereby the Abstell matter is held by the second stop in a position in which it, as already described above, is guided by the strut. If the strut is not held after releasing the securing means, it folds down solely by the action of its weight. The second stop causes even then a guided movement of the parking support takes place.
  • the movement of the parking support and the strut represents a superposition of the individual pivoting movements of the parking support and the strut, resulting from the arrangement of the articulation points and the stops.
  • the stops can be formed by protrusions, which can be designed, for example, as bolts, sheets, etc. placed on the parking support. It is also conceivable to provide on the parking support an additional element, for example in the manner of an eyelet or for easier assembly and disassembly a hook-shaped part, which forms both stops and through which the strut extends.
  • the said attacks can be formed in an advantageous manner by the edges of an opening in the parking support. This is easy to manufacture, since no additional parts must be attached to the parking support.
  • a great stability of the parking support is achieved if it has two side parts, between which a middle part is arranged. In the middle part, an opening is provided, the edges of which form the first and the second stop.
  • the parking support can be made different, especially by the position of the middle part is varied. It is particularly advantageous, however, if the parking support has an at least partially U-shaped cross-section.
  • the Side parts can, if the Abstell basic is made sufficiently wide, with their loader arm side facing the loader in the transport position enclose, which is an additional backup of the parking support on the loader.
  • the middle part may be flat.
  • the support part of the strut may be formed as a hook element.
  • the hook element is opened in the direction of the parking support, so that it can form a positive engagement with a projection, an opening edge or another suitably designed area of the parking support. It can also be provided fuse elements that ensure the positive connection permanently.
  • the strut means may be provided which cause the strut is at least during movement of strut and Abstell matter in contact with the first and / or the second stop, so that there is always a guide the Abstell matter is given by the strut. If the stops are determined, for example, by the edge of an opening, this can be achieved by means for preventing the strut from falling out of the opening.
  • the means may be implemented in a simple manner as a hook element provided in an end region of the strut is.
  • the opening of the hook element faces the parking support and can interact with correspondingly formed areas of the parking support.
  • the hook element can engage in this area and at least temporarily enter into a positive connection with it. This ensures that the strut and the Abstell work remain engaged and do not have to be rejoined manually.
  • the areas on the parking support can be formed for example by profiles of different cross-section, such as round profiles or square profiles, among others. It is also conceivable to determine the areas by recesses in the parking support, so that the hook element can engage in limited by the recesses webs or projections.
  • the securing means with which a pivoting movement of the parking support is prevented in the transport position in the usual way as securing bolts, pins u.a. be executed. It is particularly advantageous, however, to provide the securing means remotely operable. If the securing means are released, the parking support folds down due to its own weight. In a remotely operated version of the securing means, it is not necessary for an operator to leave the vehicle to park the loader.
  • the remote-controlled means may be designed mechanically as a hook or latch, for example, and be operated by means of rods or trains.
  • a comfortable operation results when the securing means are operated electrically, hydraulically or pneumatically.
  • the securing means are operated electrically, hydraulically or pneumatically.
  • the securing means have an electromagnet.
  • securing means such as bolts or latches, can be controlled via the electromagnet. These can be held by a spring in a locking position with the solenoid switched off and be opened by the action of the activated electromagnet, so that a backup of the parking support is ensured even in an interruption of power.
  • Loaders are used on agricultural or industrial vehicles, such as farm tractors. Tractors are often used on farm tractors. But it is also possible to attach a loader on the back or on another area of the vehicle.
  • a parking support 28 and a strut 32 is mounted on the loader arm 18, as shown in Fig. 2, a parking support 28 and a strut 32 is mounted.
  • the parking support 28 has a first end region 34 and a second end region 35.
  • the first end portion 34 is pivotally mounted about a first pivot axis 37 on the loader arm 18.
  • the Abstell matter 28 consists, as is apparent from Fig. 4, of two side parts 36 and a central part 38.
  • the middle part 38 is arranged between the side parts 36, that the Abstell matter 28 has an at least partially U-shaped cross-section.
  • the middle part 38 is formed stepwise, wherein between two stages 40, a tapered transition region 42 is arranged. In the transitional region 42, an opening 44 is provided, the edge of which forms a first and a second stop 46, 48. In the area of the second stop 48, a bolt 50 is fixedly connected to the parking support 28.
  • the strut 32 also has a first end portion 52 and a second end portion 54.
  • the first end portion 52 is pivotally mounted about a second pivot axis 55 on the loader arm 18.
  • the strut 32 In its second end region 54, the strut 32 has a first hook element or a support part 58 and a also designed as a hook element means 60, whose function and arrangement will be explained in more detail below.
  • the first pivot axis 37 of the Abstell silica and the second pivot axis 55 of the strut 32 extend to each other and to a footprint at least approximately parallel.
  • the parking support 28 is folded up so as not to hinder the work of the loader 10.
  • the strut 32 extends through the opening 44. With its second end portion 54, the strut 32 is secured by a designed as a spring pin securing means 56 on the loader arm 18 against pivoting.
  • the strut 32 is in this transport position at the middle part 38. Due to the step-like design of the central part 38, the strut 32 is within the side parts 36.
  • the side parts 36 are designed so that they also partially overlap the loader arm 18 in the transport position and so the Abstell T 28 against lateral movements.
  • the parking support 28 Upon release of the securing means 56, the parking support 28 tends to fold down by the action of its own weight. If the strut 32 is supported manually, then the Abstell basic 28 moves according to the guided movement of the strut 32. To bring the Abstell A 28 back into a raised position, the strut 32 is pivoted in the direction of its transport position. The strut 32 extends through the opening 44 and abuts in both pivoting operations on the first stop 46, which shifts during the pivoting along the strut 32 according to the respective direction of movement.
  • the means 60 in the region of the second end 56 of the strut 32 prevent the strut 32 from slipping out of the opening 44 by the means 60 designed as a hook element engage in the bolt 50 and hold it in a form-fitting manner. It is thus permanently a guide the Abstell basic 28 ensured by the strut 32. While this feature is advantageous, it is not essential to the invention.
  • the strut 32 sits with its support member 58 on the bolt 50.
  • This parking position is achieved by the loader 10 is dropped off after folding down the Abstell basic 28 and subsequently, if necessary, slightly raised again, whereby the strut 32 is lifted through the opening 44. Then, the loader 10 is completely discontinued, wherein the strut 32 slides along the first step 40 of the central part 38 in the direction of the bolt 50 and is seated thereon with its support member 58.
  • the support member 58 is designed as a hook element open in the direction of the support 32.
  • An additional securing of the strut 28 in this position could be effected in the usual way, for example by means of the securing element 56, if no means 60 designed as a hook element are provided on the strut 32.

Abstract

A loader with at least one loading arm (18), a parking support (24) and a strut (32) is described. The parking support is mounted to be able to pivot about a first pivot axis (37) and the strut about a second pivot axis a distance in front of the first one, both axes being on the loader arm. The loader has safety devices (56) for detachable securing of the parking support against pivoting with respect to the loader arm in a transport position. The strut has a support part (58) which can support itself in a park position on the parking support with the safety devices released. The parking support has a stop (46) on which the strut lies at least in the transport position and which is located between the strut and the loader arm.

Description

Die Erfindung bezieht sich auf einen Lader mit mindestens einem Laderarm, einer Abstellstütze und einer Strebe, wobei die Abstellstütze um eine erste Schwenkachse und die Strebe um eine zweite, von der ersten Schwenkachse beabstandete Schwenkachse an dem Laderarm verschwenkbar angebracht ist, sowie mit Sicherungsmitteln zum lösbaren Sichern der Abstellstütze gegen ein Verschwenken gegenüber dem Laderarm in einer Transportstellung, wobei die Strebe einen Stützteil aufweist, der sich bei gelösten Sicherungsmitteln in einer Parkstellung auf der Abstellstütze abstützen kann, sowie auf ein Fahrzeug mit einem solchen Lader.The invention relates to a loader with at least one loader arm, a parking support and a strut, wherein the parking support is mounted pivotably about a first pivot axis and the strut about a second, spaced from the first pivot axis pivot axis on the loader, and with securing means for releasable Securing the parking support against pivoting relative to the loader arm in a transport position, wherein the strut has a support member which can be supported in released parking in a parking position on the parking support, as well as on a vehicle with such a loader.

Die FR-A-1 587 734 zeigt einen Lader mit einem Laderarm und einer an dem Laderarm schwenkbar angebrachten Abstellstütze. An dem Laderarm ist eine Strebe mit einem ihrer Endbereiche schwenkbar angebracht, welche über eine an ihrem gegenüberliegenden Endbereich vorgesehene, auf die Abstellstütze verschiebbar aufgesetzte Hülse an der Abstellstütze angreift.FR-A-1 587 734 shows a loader with a loader arm and a jacking support pivotally mounted on the loader arm. On the loader arm, a strut with one of its end portions is pivotally mounted, which engages over a provided at its opposite end, slidably mounted on the parking sleeve sleeve on the parking support.

Lader werden an landwirtschaftlichen oder industriellen Fahrzeugen, wie beispielsweise an Ackerschleppern eingesetzt. Sie sind oftmals an der Frontseite des Fahrzeugs vorgesehen, können aber auch an dessen Rückseite angebracht sein. Wenn der Lader nicht benötigt wird, kann er von dem Fahrzeug abgebaut und abgestellt werden. Hierzu weisen bekannte Lader, wie beispielsweise ein gattungsgemäßer Lader der Serie Q von Älö (Prospekt Nr. 11 24 575) Abstellstützen auf. Der Lader stützt sich einerseits auf einer Schaufel und andererseits an den Laderarmen schwenkbar angebrachten Abstellstützen auf. Bei angebautem Lader befinden sich die Abstellstützen in einer hochgeklappten Stellung, in der sie an dem Laderarm anliegen und in üblicher Weise durch Sicherungsbolzen o.ä. gesichert werden, um ein Arbeiten mit dem Lader nicht zu behindern. Um den Lader abzustellen, muß die Sicherung gelöst werden, damit die Abstellstütze heruntergeklappt werden kann. An dem Laderarm ist darüber hinaus eine Strebe schwenkbar angebracht. Die Strebe weist einen Stützteil auf, mit dem sie sich nach dem Herunterklappen der Abstellstütze auf dem Rand einer Öffnung in der Abstellstütze abstützt. Um einen dauerhaften Formschluß zwischen dem Rand und dem Stützteil zu gewährleisten, wird der Stützteil in üblicher Weise, beispielsweise mittels des bereits zwischen dem Rand und dem Stützteil zu gewährleisten, wird der Stützteil in üblicher Weise, beispielsweise mittels des bereits genannten Sicherungsbolzens in der Öffnung gesichert. Nach dem Anbauen des Laders an das Fahrzeug muß die Sicherung gelöst, die Strebe und die Abstellstütze außer Eingriff gebracht und beide Teile manuell in eine hochgeklappte Position gebracht werden. Die Strebe und die Abstellstütze müssen einzeln manuell geführt werden, damit die Strebe zwischen der Abstellstütze und dem Laderarm zu liegen kommt.Loaders are used on agricultural or industrial vehicles, such as farm tractors. They are often provided on the front of the vehicle, but may also be attached to the rear side. If the loader is not needed, it can be removed from the vehicle and parked. For this purpose, have known loader, such as a generic loader series Q of Älö (Prospectus no. 11 24 575) Abstellstützen on. The loader rests on the one hand on a shovel and on the other hand on the loader arms pivotally mounted Abstellstützen. When the loader is mounted, the parking supports are in a folded-up position, in which they rest on the loader arm and the like in the usual way by securing bolts. be secured not to interfere with working with the loader. In order to stop the loader, the fuse must be released so that the parking support can be folded down. In addition, a strut is pivotally mounted on the loader arm. The strut has a support member with which it is supported after folding down the parking support on the edge of an opening in the parking support. In order to ensure a permanent positive engagement between the edge and the support member, the support member in the usual manner, for example by means of the already to ensure between the edge and the support member, the support member is secured in the usual manner, for example by means of the aforementioned locking bolt in the opening. After attaching the loader to the vehicle, the fuse must be released, the strut and the Abstellstütze disengaged and both parts are manually brought into a folded position. The strut and the parking support must be manually guided individually so that the strut comes to rest between the parking support and the loader arm.

Das mit der Erfindung zu lösende Problem wird darin gesehen, daß bei bekannten Ladern das Wegklappen der Abstellstützen aufwendig ist.The problem to be solved by the invention is seen in the fact that in known loaders folding away the Abstellstützen is expensive.

Dieses Problem wird erfindungsgemäß durch die Lehre des Patentanspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den Unteransprüchen hervor.This problem is solved by the teaching of claim 1. Further advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

Ein Lader weist mindestens einen Laderarm, eine Abstellstütze und eine Strebe auf. Die Abstellstütze ist um eine erste Schwenkachse und die Strebe um eine zweite Schwenkachse an dem Laderarm verschwenkbar angebracht. Die erste und die zweite Schwenkachse sind voneinander beabstandet angeordnet. Der Laderarm weist Sicherungsmittel zum lösbaren Sichern der Abstellstütze gegen ein Verschwenken gegenüber dem Laderarm auf, wenn sich die Abstellstütze in einer Transportstellung, d. h. in ihrer hochgeklappten Stellung, an dem Laderarm befindet. Die Strebe weist einen Stützteil auf, der sich bei gelösten Sicherungsmitteln, d. h., wenn der Lader bzw. die Abstellstütze sich in einer Parkstellung befinden, auf der Abstellstütze abstützen kann. Die Abstellstütze weist einen Anschlag auf, an dem die Strebe in der Transportstellung anliegt, wobei der Anschlag zumindest in der Transportstellung zwischen der Strebe und dem Laderarm angeordnet ist. Wenn die Strebe durch die Sicherungsmittel an dem Laderarm festgelegt ist, so liegt sie an dem Anschlag an und sichert so die Abstellstütze in einer hochgeklappten Stellung. Um die Abstellstütze in die Parkstellung zu bringen, werden die Sicherungsmittel gelöst und die Strebe heruntergeklappt, wodurch auch die Abstellstütze bedingt durch ihr Gewicht selbsttätig nach unten klappt, da sie nur durch die Wirkung des Anschlags an dem Laderarm gehalten wird. Ein Hochklappen der Abstellstütze erfolgt lediglich über ein manuelles Verschwenken der Strebe in Richtung ihrer Transportstellung. Der Anschlag liegt während der Hochklapp-Bewegung an der Strebe an und gleitet an ihr entlang, so daß die Abstellstütze um ihren Anlenkpunkt verschwenkt wird. Anschließend wird die Strebe in ihrer Transportstellung gesichert und legt damit ebenfalls die Abstellstütze in dieser Stellung fest. Die Abstellstütze wird also in ihre Transportstellung gebracht, ohne daß sie selbst direkt betätigt werden muß. Es genügt, wenn die Strebe beispielsweise durch eine Bedienungsperson verschwenkt wird. Üblicherweise weisen Lader zwei Laderarme auf, die auf der rechten und linken Seite eines Fahrzeugs angeordnet und mit diesem lösbar beispielsweise über einen Anbaurahmen verbunden sind. Es ist aber auch ein Lader mit nur einem Laderarm denkbar. Wenn der Lader zwei oder mehr Laderarme aufweist, können alle Laderarme mit Abstellstützen versehen sein, es ist aber auch denkbar nur einen Teil der Laderarme oder nur einen einzelnen Laderarm mit einer oder mehreren Abstellstützen zu versehen, wenn hierdurch die Stabilität des abgestellten Laders ausreichend gewährleistet wird.A loader has at least one loader arm, a parking support and a strut. The parking support is mounted pivotably about a first pivot axis and the strut about a second pivot axis on the loader arm. The first and second pivot axes are spaced from each other. The loader arm has securing means for releasably securing the parking support against pivoting relative to the loader arm when the parking support is in a transport position, ie in its raised position, on the loader arm. The strut has a support member which can be supported on the parking support with dissolved securing means, ie, when the loader or the parking support are in a parked position. The parking support has a stop on which the strut rests in the transport position, wherein the Stop is arranged at least in the transport position between the strut and the loader. When the strut is fixed by the securing means on the loader arm, it bears against the stop, thus securing the jacking support in a folded-up position. To bring the parking support in the park position, the securing means are released and the strut folded down, whereby the parking support due to its weight automatically works down, as it is held only by the action of the stop on the loader. A folding up of the parking support takes place only via a manual pivoting of the strut in the direction of its transport position. The stop abuts against the strut during the flip-up movement and slides along it, so that the parking support is pivoted about its point of articulation. Subsequently, the strut is secured in its transport position and thus also determines the parking support in this position. The parking support is thus brought into its transport position, without that they themselves must be operated directly. It is sufficient if the strut is pivoted for example by an operator. Usually loaders have two loader arms, which are arranged on the right and left side of a vehicle and connected to this detachably, for example via a mounting frame. But it is also a loader with only one loader conceivable. If the loader has two or more loader arms, all loader arms can be provided with Abstellstützen, but it is also conceivable to provide only a portion of the loader arms or only a single loader with one or more parking supports, if this ensures the stability of the parked loader is sufficiently ,

An der Abstellstütze kann ein zweiter Anschlag vorgesehen sein, der von dem ersten Anschlag beabstandet ist. Die Strebe erstreckt sich zumindest in der Transportstellung zwischen dem ersten Anschlag und dem zweiten Anschlag, wodurch die Abstellstütze durch den zweiten Anschlag in einer Position gehalten wird, in der sie, wie bereits zuvor beschrieben, durch die Strebe geführt wird. Wird die Strebe nach dem Lösen der Sicherungsmittel nicht gehalten, klappt sie allein durch die Wirkung ihres Gewichts nach unten. Der zweite Anschlag bewirkt, daß auch dann eine geführte Bewegung der Abstellstütze erfolgt. Die Bewegung der Abstellstütze und der Strebe stellt eine Überlagerung der einzelnen Schwenkbewegungen der Abstellstütze und der Strebe dar, die sich aus der Anordnung der Anlenkpunkte und der Anschläge ergeben. Die Anschläge können durch Vorsprünge, die beispielsweise als auf die Abstellstütze aufgesetzte Bolzen, Bleche etc. ausgeführt sein können, gebildet werden. Es ist auch denkbar, an der Abstellstütze ein zusätzliches Element, beispielsweise in der Art einer Öse bzw. zur leichteren Montage und Demontage einen hakenförmigen Teil vorzusehen, der beide Anschläge bildet und durch den sich die Strebe erstreckt.On the parking support, a second stop may be provided, which is spaced from the first stop. The strut extends at least in the transport position between the first stop and the second stop, whereby the Abstellstütze is held by the second stop in a position in which it, as already described above, is guided by the strut. If the strut is not held after releasing the securing means, it folds down solely by the action of its weight. The second stop causes even then a guided movement of the parking support takes place. The movement of the parking support and the strut represents a superposition of the individual pivoting movements of the parking support and the strut, resulting from the arrangement of the articulation points and the stops. The stops can be formed by protrusions, which can be designed, for example, as bolts, sheets, etc. placed on the parking support. It is also conceivable to provide on the parking support an additional element, for example in the manner of an eyelet or for easier assembly and disassembly a hook-shaped part, which forms both stops and through which the strut extends.

Die genannten Anschläge können in vorteilhafter Weise durch die Ränder einer Öffnung in der Abstellstütze gebildet werden. Dies ist einfach in der Herstellung, da keine zusätzlichen Teile an der Abstellstütze angebracht werden müssen.The said attacks can be formed in an advantageous manner by the edges of an opening in the parking support. This is easy to manufacture, since no additional parts must be attached to the parking support.

Eine große Stabilität der Abstellstütze wird erzielt, wenn diese zwei Seitenteile aufweist, zwischen denen ein Mittelteil angeordnet ist. In dem Mittelteil ist eine Öffnung vorgesehen, deren Ränder den ersten und den zweiten Anschlag bilden. Die Abstellstütze kann unterschiedlich ausgeführt werden, indem vor allem die Position des Mittelteils variiert wird. Besonders vorteilhaft ist es allerdings, wenn die Abstellstütze einen zumindest teilweise u-förmigen Querschnitt aufweist. Die Seitenteile können, wenn die Abstellstütze ausreichend breit ausgeführt ist, mit ihrer dem Laderarm zugewandten Seite den Laderarm in der Transportstellung umschließen, wodurch eine zusätzliche Sicherung der Abstellstütze am Laderarm erfolgt.A great stability of the parking support is achieved if it has two side parts, between which a middle part is arranged. In the middle part, an opening is provided, the edges of which form the first and the second stop. The parking support can be made different, especially by the position of the middle part is varied. It is particularly advantageous, however, if the parking support has an at least partially U-shaped cross-section. The Side parts can, if the Abstellstütze is made sufficiently wide, with their loader arm side facing the loader in the transport position enclose, which is an additional backup of the parking support on the loader.

Der Mittelteil kann eben ausgebildet sein. Um die Bewegung der Abstellstütze und der Strebe zu beeinflussen oder aber um eine Geometrie der Anordnung zu ermöglichen, in der die Strebe in der Transportstellung zumindest teilweise innerhalb der Seitenteile der Abstellstütze zu liegen kommt, ist es vorteilhaft, den Mittelteil stufenartig auszubilden, wobei die Öffnung vorzugsweise in einem Übergangsbereich zwischen zwei Stufen vorzusehen ist.The middle part may be flat. In order to influence the movement of the parking support and the strut or to allow a geometry of the arrangement in which the strut comes to rest in the transport position at least partially within the side parts of the parking support, it is advantageous to form the central part stepwise, wherein the opening is preferably provided in a transition region between two stages.

Der Stützteil der Strebe kann als Hakenelement ausgebildet sein. Das Hakenelement ist in Richtung der Abstellstütze hin geöffnet, so daß es mit einem Vorsprung, einem Öffnungsrand oder einem anderen passend ausgebildeten Bereich der Abstellstütze einen Formschluß eingehen kann. Es können darüber hinaus Sicherungselemente vorgesehen sein, die den Formschluß dauerhaft gewährleisten.The support part of the strut may be formed as a hook element. The hook element is opened in the direction of the parking support, so that it can form a positive engagement with a projection, an opening edge or another suitably designed area of the parking support. It can also be provided fuse elements that ensure the positive connection permanently.

An der Strebe können Mittel vorgesehen sein, die bewirken, daß die Strebe zumindest während einer Bewegung von Strebe und Abstellstütze in Kontakt mit dem ersten und/oder dem zweiten Anschlag steht, so daß immer eine Führung der Abstellstütze durch die Strebe gegeben ist. Werden die Anschläge beispielsweise durch den Rand einer Öffnung bestimmt, so kann dies durch Mittel erzielt werden, die verhindern, daß die Strebe aus der Öffnung herausfällt.On the strut means may be provided which cause the strut is at least during movement of strut and Abstellstütze in contact with the first and / or the second stop, so that there is always a guide the Abstellstütze is given by the strut. If the stops are determined, for example, by the edge of an opening, this can be achieved by means for preventing the strut from falling out of the opening.

Die Mittel können in einfacher Weise als Hakenelement ausgeführt sein, das in einem Endbereich der Strebe vorgesehen ist. Die Öffnung des Hakenelements ist der Abstellstütze zugewandt und kann mit entsprechend ausgebildeten Bereichen der Abstellstütze zusammenwirken. Das Hakenelement kann in diesen Bereich eingreifen und zumindest zeitweise mit ihm eine formschlüssige Verbindung eingehen. Dadurch wird gewährleistet, daß die Strebe und die Abstellstütze in Eingriff bleiben und nicht erneut manuell zusammengeführt werden müssen. Die Bereiche an der Abstellstütze können beispielsweise durch Profile unterschiedlichen Querschnitts, wie Rundprofile oder Vierkantprofile u.a. gebildet werden. Es ist auch denkbar, die Bereiche durch Aussparungen in der Abstellstütze zu bestimmen, so daß das Hakenelement in durch die Aussparungen begrenzte Stege oder Vorsprünge eingreifen kann.The means may be implemented in a simple manner as a hook element provided in an end region of the strut is. The opening of the hook element faces the parking support and can interact with correspondingly formed areas of the parking support. The hook element can engage in this area and at least temporarily enter into a positive connection with it. This ensures that the strut and the Abstellstütze remain engaged and do not have to be rejoined manually. The areas on the parking support can be formed for example by profiles of different cross-section, such as round profiles or square profiles, among others. It is also conceivable to determine the areas by recesses in the parking support, so that the hook element can engage in limited by the recesses webs or projections.

Die Sicherungsmittel, mit denen eine Schwenkbewegung der Abstellstütze in der Transportstellung unterbunden wird, können in üblicher Weise als Sicherungsbolzen, Stifte u.a. ausgeführt sein. Besonders vorteilhaft ist es aber, die Sicherungsmittel fernbetätigbar vorzusehen. Werden die Sicherungsmittel gelöst, so klappt die Abstellstütze bedingt durch ihr Eigengewicht nach unten. Bei einer fernbetätigten Ausführung der Sicherungsmittel ist es nicht erforderlich, daß eine Bedienungsperson das Fahrzeug zum Abstellen des Laders verläßt. Die fernbetätigten Mittel können beispielsweise mechanisch als Haken oder Riegel ausgebildet sein und mittels Gestängen oder Zügen betätigt werden.The securing means with which a pivoting movement of the parking support is prevented in the transport position, in the usual way as securing bolts, pins u.a. be executed. It is particularly advantageous, however, to provide the securing means remotely operable. If the securing means are released, the parking support folds down due to its own weight. In a remotely operated version of the securing means, it is not necessary for an operator to leave the vehicle to park the loader. The remote-controlled means may be designed mechanically as a hook or latch, for example, and be operated by means of rods or trains.

Eine komfortable Bedienung ergibt sich, wenn die Sicherungsmittel elektrisch, hydraulisch oder pneumatisch betätigt werden. Hierzu können Einrichtungen benutzt werden, die bereits an einem Fahrzeug, an dem der Lader angebaut ist, vorhanden sind oder es können separate Einrichtungen vorgesehen sein.A comfortable operation results when the securing means are operated electrically, hydraulically or pneumatically. For this purpose, it is possible to use devices which are already present on a vehicle to which the loader is attached or separate devices may be provided.

Es ist einfach und kostengünstig, wenn die Sicherungsmittel einen Elektromagneten aufweisen. Beispielsweise können über den Elektromagneten Sicherungsmittel, wie Bolzen oder Riegel gesteuert werden. Diese können bei abgeschaltetem Elektromagneten durch eine Feder in einer Verriegelungsstellung gehalten werden und durch die Wirkung des aktivierten Elektromagneten geöffnet werden, so daß eine Sicherung der Abstellstütze auch bei einer Unterbrechung der Stromzufuhr gewährleistet wird.It is easy and inexpensive if the securing means have an electromagnet. For example, securing means, such as bolts or latches, can be controlled via the electromagnet. These can be held by a spring in a locking position with the solenoid switched off and be opened by the action of the activated electromagnet, so that a backup of the parking support is ensured even in an interruption of power.

Lader werden an landwirtschaftlichen oder industriellen Fahrzeugen, wie an Ackerschleppern eingesetzt. An Ackerschleppern finden häufig Frontlader Verwendung. Es ist aber auch ein Anbau eines Laders an der Rückseite oder auch an einem anderen Bereich des Fahrzeugs möglich.Loaders are used on agricultural or industrial vehicles, such as farm tractors. Tractors are often used on farm tractors. But it is also possible to attach a loader on the back or on another area of the vehicle.

In der Zeichnung ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
einen Lader in Seitenansicht, der an einem nur angedeutet gezeigten Fahrzeug angebaut ist,
Fig. 2
eine vergrößerte Seitenansicht eines vorderen Bereichs des Laders mit einem Laderarm, einem Werkzeug und einer Abstellstütze in einer Transportstellung,
Fig. 3
die Ansicht nach Fig. 2 mit der Abstellstütze in einer Parkstellung und
Fig. 4
einen Schnitt entlang der Linie 4-4 in Fig. 3.
Von einem in Figur 1 gezeigten Hubwerk 10, das frontseitig an einen nur angedeuteten Ackerschlepper angeschlossen ist, ist ein Mast 12 gezeigt, der in einem Lager 14 einen Laderarm 18 aufnimmt. Ein Werkzeug 20, z. B. eine Schaufel, ist an dem frontseitigen Ende des Laderarms 18 beweglich und auswechselbar angeschlossen. Um das Werkzeug 20 anzuheben, wird der Laderarm 18 über Hydraulikmotoren 26 um das Lager 14 geschwenkt; zur Verstellung der Neigung des Werkzeugs 20 dient ein weiterer Hydraulikmotor 27.In the drawing, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
a loader in side view, which is attached to a vehicle shown only hinted,
Fig. 2
an enlarged side view of a front portion of the supercharger with a loader, a tool and a Abstellstütze in a transport position,
Fig. 3
the view of FIG. 2 with the parking support in a parking position and
Fig. 4
a section along the line 4-4 in Fig. 3rd
From a hoist 10 shown in Figure 1, which is connected to the front of a tractor only hinted, a mast 12 is shown, which receives a loader arm 18 in a bearing 14. A tool 20, z. As a blade, is connected to the front end of the loader arm 18 movable and replaceable. To raise the tool 20, the loader arm 18 is pivoted about the bearing 14 via hydraulic motors 26; to adjust the inclination of the tool 20 is another hydraulic motor 27th

An dem Laderarm 18 ist, wie in Fig. 2 gezeigt, eine Abstellstütze 28 und eine Strebe 32 angebracht.On the loader arm 18, as shown in Fig. 2, a parking support 28 and a strut 32 is mounted.

Die Abstellstütze 28 weist einen ersten Endbereich 34 und einen zweiten Endbereich 35 auf. Der erste Endbereich 34 ist schwenkbar um eine erste Schwenkachse 37 an dem Laderarm 18 angebracht. Die Abstellstütze 28 besteht, wie aus Fig. 4 hervorgeht, aus zwei Seitenteilen 36 und einem Mittelteil 38. Der Mittelteil 38 ist so zwischen den Seitenteilen 36 angeordnet, daß die Abstellstütze 28 einen zumindest teilweise u-förmigen Querschnitt aufweist. Das Mittelteil 38 ist stufenartig ausgebildet, wobei zwischen zwei Stufen 40 ein abgeschrägter Übergangsbereich 42 angeordnet ist. In dem Übergangsgsbereich 42 ist eine Öffnung 44 vorgesehen, deren Rand einen ersten und einen zweiten Anschlag 46, 48 bildet. Im Bereich des zweiten Anschlags 48 ist ein Bolzen 50 fest mit der Abstellstütze 28 verbunden.The parking support 28 has a first end region 34 and a second end region 35. The first end portion 34 is pivotally mounted about a first pivot axis 37 on the loader arm 18. The Abstellstütze 28 consists, as is apparent from Fig. 4, of two side parts 36 and a central part 38. The middle part 38 is arranged between the side parts 36, that the Abstellstütze 28 has an at least partially U-shaped cross-section. The middle part 38 is formed stepwise, wherein between two stages 40, a tapered transition region 42 is arranged. In the transitional region 42, an opening 44 is provided, the edge of which forms a first and a second stop 46, 48. In the area of the second stop 48, a bolt 50 is fixedly connected to the parking support 28.

Die Strebe 32 hat ebenfalls einen ersten Endbereich 52 und einen zweiten Endbereich 54. Der erste Endbereich 52 ist schwenkbar um eine zweite Schwenkachse 55 an dem Laderarm 18 angebracht. In ihrem zweiten Endbereich 54 weist die Strebe 32 ein erstes Hakenelement bzw. einen Stützteil 58 und ein ebenfalls als Hakenelement ausgebildetes Mittel 60 auf, deren Funktion und Anordnung im folgenden noch näher erläutert wird.The strut 32 also has a first end portion 52 and a second end portion 54. The first end portion 52 is pivotally mounted about a second pivot axis 55 on the loader arm 18. In its second end region 54, the strut 32 has a first hook element or a support part 58 and a also designed as a hook element means 60, whose function and arrangement will be explained in more detail below.

Die erste Schwenkachse 37 der Abstellstütze und die zweite Schwenkachse 55 der Strebe 32 verlaufen zueinander und zu einer Aufstandsfläche zumindest annähernd parallel.The first pivot axis 37 of the Abstellstütze and the second pivot axis 55 of the strut 32 extend to each other and to a footprint at least approximately parallel.

In der in Fig. 2 gezeigten Transport- bzw. Arbeitsstellung ist die Abstellstütze 28 hochgeklappt, um die Arbeit des Laders 10 nicht zu behindern. Die Strebe 32 erstreckt sich durch die Öffnung 44. Mit ihrem zweiten Endbereich 54 ist die Strebe 32 durch ein als Federstift ausgeführtes Sicherungsmittel 56 an dem Laderarm 18 gegen ein Verschwenken gesichert. Die Strebe 32 liegt in dieser Transportstellung an dem Mittelteil 38 an. Aufgrund der stufenartigen Ausbildung des Mittelteils 38 liegt die Strebe 32 innerhalb der Seitenteile 36. Die Seitenteile 36 sind so ausgeführt, daß sie in der Transportstellung auch den Laderarm 18 teilweise Überlappen und so die Abstellstütze 28 gegen seitliche Bewegungen sichern.In the transport or working position shown in Fig. 2, the parking support 28 is folded up so as not to hinder the work of the loader 10. The strut 32 extends through the opening 44. With its second end portion 54, the strut 32 is secured by a designed as a spring pin securing means 56 on the loader arm 18 against pivoting. The strut 32 is in this transport position at the middle part 38. Due to the step-like design of the central part 38, the strut 32 is within the side parts 36. The side parts 36 are designed so that they also partially overlap the loader arm 18 in the transport position and so the Abstellstütze 28 against lateral movements.

Bei einem Lösen der Sicherungsmittel 56 tendiert die Abstellstütze 28 durch die Wirkung ihrer eigenen Gewichtskraft dazu nach unten zu klappen. Wird die Strebe 32 dabei manuell unterstützt, so bewegt sich die Abstellstütze 28 entsprechend der geführten Bewegung der Strebe 32. Um die Abstellstütze 28 wieder in eine hochgeklappte Stellung zu bringen, wird die Strebe 32 in Richtung ihrer Transportstellung verschwenkt. Die Strebe 32 erstreckt sich durch die Öffnung 44 und liegt bei beiden Verschwenkvorgängen an dem ersten Anschlag 46 an, der sich während des Verschwenkens entlang der Strebe 32 entsprechend der jeweiligen Bewegungsrichtung verschiebt.Upon release of the securing means 56, the parking support 28 tends to fold down by the action of its own weight. If the strut 32 is supported manually, then the Abstellstütze 28 moves according to the guided movement of the strut 32. To bring the Abstellstütze 28 back into a raised position, the strut 32 is pivoted in the direction of its transport position. The strut 32 extends through the opening 44 and abuts in both pivoting operations on the first stop 46, which shifts during the pivoting along the strut 32 according to the respective direction of movement.

Zum Herunterklappen der Abstellstütze 28 ist eine manuelle Unterstützung der Strebe 32 nicht unbedingt notwendig, da die Abstellstütze 28 aufgrund ihres Eigengewichts selbsttätig nach unten klappt. Die Mittel 60 im Bereich des zweiten Endes 56 der Strebe 32 verhindern, daß die Strebe 32 aus der Öffnung 44 rutscht, indem die als Hakenelement ausgeführten Mittel 60 in den Bolzen 50 eingreifen und diesen formschlüssig halten. Es ist dadurch dauerhaft eine Führung der Abstellstütze 28 durch die Strebe 32 gewährleistet. Dieses Merkmal ist zwar vorteilhaft, es ist aber für die Erfindung nicht unbedingt erforderlich.To fold down the Abstellstütze 28 is a manual support of the strut 32 is not necessary, since the Abstellstütze 28 automatically works down due to their own weight. The means 60 in the region of the second end 56 of the strut 32 prevent the strut 32 from slipping out of the opening 44 by the means 60 designed as a hook element engage in the bolt 50 and hold it in a form-fitting manner. It is thus permanently a guide the Abstellstütze 28 ensured by the strut 32. While this feature is advantageous, it is not essential to the invention.

In einer in Fig. 3 dargestellten Parkstellung sitzt die Strebe 32 mit ihrem Stützteil 58 auf dem Bolzen 50 auf. Diese Parkstellung wird erreicht, indem der Lader 10 nach dem Herunterklappen der Abstellstütze 28 abgesetzt und im Anschluß erforderlichenfalls nochmals leicht angehoben wird, wodurch die Strebe 32 über die Öffnung 44 gehoben wird. Daraufhin wird der Lader 10 vollständig abgesetzt, wobei die Strebe 32 entlang der ersten Stufe 40 des Mittelteils 38 in Richtung des Bolzens 50 gleitet und auf diesem mit ihrem Stützteil 58 aufsitzt. Der Stützteil 58 ist als ein in Richtung der Stütze 32 geöffnetes Hakenelement ausgeführt. Eine zusätzliche Sicherung der Strebe 28 in dieser Position könnte in üblicher Weise, beispielsweise mittels des Sicherungselements 56 erfolgen, wenn an der Strebe 32 keine als Hakenelement ausgeführten Mittel 60 vorgesehen sind.In a parking position shown in Fig. 3, the strut 32 sits with its support member 58 on the bolt 50. This parking position is achieved by the loader 10 is dropped off after folding down the Abstellstütze 28 and subsequently, if necessary, slightly raised again, whereby the strut 32 is lifted through the opening 44. Then, the loader 10 is completely discontinued, wherein the strut 32 slides along the first step 40 of the central part 38 in the direction of the bolt 50 and is seated thereon with its support member 58. The support member 58 is designed as a hook element open in the direction of the support 32. An additional securing of the strut 28 in this position could be effected in the usual way, for example by means of the securing element 56, if no means 60 designed as a hook element are provided on the strut 32.

Claims (12)

  1. A loader with at least one loader arm (18), a parking prop (28) and a strut (32), wherein the parking prop (28) and the strut (32) are pivotally attached to the loader arm (18) respectively about a first pivot axis (37) and a second pivot axis (55) spaced from the first pivot axis (37), as well as with securing means (56) for releasably securing the parking prop (28) against turning relative to the loader arm (18) in a transport position, wherein the strut (32) has an abutment part (58) which, with the securing means (56) released, can be supported on the parking prop (28) in a parking position, characterized in that the parking prop (28) has a stop (46) on which the strut (32) bears at least in the transport position, which stop is disposed in this transport position between the strut (32) and the loader arm (18) and which slides along the strut (32) during folding up movement of the strut (32), wherein the strut (32), when it is secured in its transport position, also fixes the parking prop (28) in this position.
  2. A loader according to claim 1, characterized in that the parking prop (28) has a second stop (48) spaced from the first stop (46) and in that the strut (32) extends between the first stop (46) and the second strop (48) at least in the transport position.
  3. A loader according to claim 2, characterized in that the stops (46, 48) are formed by edges of an opening (44) in the parking prop (28) and in that the strut (32) extends through the opening (44) at least in the transport position.
  4. A loader according to one or more of the preceding claims, characterized in that the parking prop (28) comprises two side parts (36), between which a middle part (38) which has an opening (44) is arranged.
  5. A loader according to claim 4, characterized in that the middle part (38) is of stepped form and the opening (44) is provided in a transition region (42) between two steps (40).
  6. A loader according to one or more of the preceding claims, characterized in that the abutment part (58) of the strut (32) is formed by a hook element open in the direction of the parking prop (28) and/or is arranged in an end region (54) of the strut (32).
  7. A loader according to one or more of the preceding claims, characterized in that means (60) are provided on the strut (32) which hold the strut (32) in engagement with the first stop (46) and/or the second stop (48).
  8. A loader according to claim 7, characterized in that the means (60) are formed by at least one hook element provided in an end region (54) of the strut (32), with its opening facing the parking prop (28) and the end region (54).
  9. A loader according to one or more of the preceding claims, characterized in that the securing means (56) can be released and closed by remote actuation.
  10. A loader according to claim 9, characterized in that the securing means (56) can be actuated electrically and/or hydraulically or pneumatically.
  11. A loader according to claim 9 or 10, characterized in that the securing means (56) comprise an electromagnet.
  12. An agricultural or industrial vehicle, preferably an agricultural tractor, with a loader (10) according to one or more of the preceding claims.
EP99114042A 1998-08-01 1999-07-20 Loader and vehicle with a loader Expired - Lifetime EP0978592B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19834773A DE19834773A1 (en) 1998-08-01 1998-08-01 Loader and vehicle with one loader
DE19834773 1998-08-01

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EP0978592A1 EP0978592A1 (en) 2000-02-09
EP0978592B1 true EP0978592B1 (en) 2006-06-07

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US (1) US6247888B1 (en)
EP (1) EP0978592B1 (en)
AT (1) ATE329093T1 (en)
CA (1) CA2279169C (en)
DE (2) DE19834773A1 (en)
ES (1) ES2262275T3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029617A1 (en) * 1997-12-08 1999-06-17 Stephen Henry Currie Improvements in fork lifts
AT412659B (en) * 2002-08-13 2005-05-25 Hauer Franz DEVICE FOR SUPPORTING A TRACKING VEHICLE, IN PARTICULAR A TRACTOR, COUPLING SWINGARM FOR A WORKING DEVICE
DE102005053041A1 (en) * 2005-11-04 2007-05-10 Wilhelm Stoll Maschinenfabrik Gmbh Detachable front loader for coupling working tool to machine e.g. tractor, has adjusting cylinder for folding detachable column, which can be tilted at end of cylinder at front loader rocker
EP2092126A1 (en) * 2006-12-13 2009-08-26 Challenge Implements Holdings Pty Limited Parking stand
US7578648B2 (en) * 2007-09-28 2009-08-25 Deere & Company Front latch system for a front end loader
US8322969B1 (en) 2009-09-10 2012-12-04 Westendorf Manufacturing, Co. Loader assembly and method providing for cantilevered storage of lift arms
US8544885B2 (en) * 2009-12-10 2013-10-01 Deere & Company Folding parking stand
DE102010030680A1 (en) * 2010-06-29 2011-12-29 Deere & Company Front loaders
JP6942669B2 (en) * 2018-04-19 2021-09-29 株式会社クボタ Front loader stand, front loader and work vehicle

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Publication number Priority date Publication date Assignee Title
DE1990849U (en) * 1968-08-01 Alfred Hagelstein Maschinenfabrik, 2400 Lübeck-Travemünde Mobile working device
FR1587734A (en) * 1967-09-16 1970-03-27
JPS5828049Y2 (en) * 1978-05-04 1983-06-18 株式会社クボタ Stand device for work equipment with lift arm
US4264264A (en) * 1979-02-26 1981-04-28 Deere & Company Loader mounting structure
US4275984A (en) * 1979-03-19 1981-06-30 Farmhand, Inc. Parking stand
US4347031A (en) * 1980-06-23 1982-08-31 Deere & Company Parking stand for tractor-dismounted front loader
CA1177448A (en) * 1981-12-03 1984-11-06 John B. Lenertz Quick attachment device
DE3370272D1 (en) * 1982-11-24 1987-04-23 Case Europ Ltd J I Tractor front loader
DE3837634A1 (en) * 1988-11-05 1990-05-10 Fendt & Co Xaver Longitudinally adjustable parking support on a front-end loading attachment for agricultural tractors or suchlike utility vehicles

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DE19834773A1 (en) 2000-02-03
EP0978592A1 (en) 2000-02-09
ES2262275T3 (en) 2006-11-16
CA2279169C (en) 2004-12-14
CA2279169A1 (en) 2000-02-01
ATE329093T1 (en) 2006-06-15
US6247888B1 (en) 2001-06-19
DE59913505D1 (en) 2006-07-20

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