EP2982802B1 - Tool-carrier for depositing and picking up a tool for a loader, and method for same - Google Patents

Tool-carrier for depositing and picking up a tool for a loader, and method for same Download PDF

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Publication number
EP2982802B1
EP2982802B1 EP15177351.2A EP15177351A EP2982802B1 EP 2982802 B1 EP2982802 B1 EP 2982802B1 EP 15177351 A EP15177351 A EP 15177351A EP 2982802 B1 EP2982802 B1 EP 2982802B1
Authority
EP
European Patent Office
Prior art keywords
tool
tool carrier
bar
locking
spring
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.)
Active
Application number
EP15177351.2A
Other languages
German (de)
French (fr)
Other versions
EP2982802A2 (en
EP2982802A3 (en
Inventor
Diego Adrian Villareal
Damien Faivre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
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Deere and Co
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Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP2982802A2 publication Critical patent/EP2982802A2/en
Publication of EP2982802A3 publication Critical patent/EP2982802A3/en
Application granted granted Critical
Publication of EP2982802B1 publication Critical patent/EP2982802B1/en
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Classifications

    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • G05G5/08—Interlocking of members, e.g. locking member in a particular position before or during the movement of another member
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3631—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a transversal locking element
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle

Definitions

  • a tool carrier for putting on and taking off a tool for a front loader comprises a tool carrier frame and a locking device arranged on the tool carrier, with which a tool can be locked on the tool carrier by a transversely movable bolt, the bolt being movable from a locking position into a transversely spring-biased unlocking position when the tool is in place and locked, in which the bolt can be moved supported on the tool carrier frame.
  • the locking device comprises positioning and holding means which can be brought into a spring-preloaded position by placing a tool on the tool carrier and, when the unlocked tool is put down from the tool carrier, release the bolt from its unlocking position which supports the tool carrier frame, the positioning and holding means one Assume the holding position and the bolt can be moved from the unlocking position into a transversely spring-biased pre-locking position in which the bolt is supported on the positioning and holding means, the positioning and holding means being able to be moved from the holding position into the spring-biased position by renewed application of a tool and the bolt released in this way can be moved from the pre-locking position into the locking position by means of transverse spring force, the bolt having a handle for manually moving the bolt from the locking position into the unlocking position position. Furthermore, a method for putting a tool on and off a loader is disclosed.
  • loading vehicles or loaders in particular front loaders for use on agricultural tractors, but also construction vehicles such as wheel loaders or telescopic loaders different tools.
  • loading forks, lances, grabs or shovels can be used as loading tools.
  • the tools are usually connected to so-called tool carriers or picked up by these by means of corresponding receiving devices.
  • the tool carriers are usually firmly connected to the front end of the rocker arm or the extension arm of the loading vehicle, the receiving devices formed on the tool carriers being an interface to the tool and making it possible for the tools to be exchangeable or exchangeable on the one hand, but also accordingly can be securely connected to the tool carrier.
  • the holding devices usually have tool holders, to which the corresponding tool is placed, and a lock, with which the tool is locked after being placed on the tool carrier.
  • locking devices are known which enable the tool to be locked automatically, with the locking being to be carried out as automatically as possible without an operator operating the cabin of the vehicle must leave.
  • Such locking devices known from the prior art are generally complex and expensive.
  • the US 7,674,085 B2 discloses an arrangement and method for attaching a tool to a loader.
  • the arrangement provides a locking device which fixes a position of the tool and locks the tool in this position with the arrangement.
  • a safety device provides that the locking can only take place if the tool has been correctly positioned.
  • a tool carrier of the type mentioned at the outset is designed in such a way that the latch has an actuating and holding section on the handle side and a first guide and locking section aligned parallel thereto, the latch having a second guide and locking section on the handle side opposite, which is transverse is aligned with the first guide and locking section.
  • the tool carrier disclosed here has a locking device with low complexity, low variety of parts and high security. The fully automated locking process considerably simplifies the application of the tool to the tool carrier for the operator or the driver, since the operator or the driver no longer has to leave the cabin to lock the tool. This saves time. The simple structure of the locking device and the small number of parts facilitate assembly in production and thus also contribute to cost savings.
  • the actuation of the actuating and holding means when the tool is applied by the tool ensures that the locking mechanism does not start until a tool is also applied.
  • Accidental movement of the bolt into its locking position by vibrations or by moving the Tool carrier or the front loader without tools is effectively avoided.
  • the bolt can be accessed via a handle which is arranged on the side of the tool carrier or extends outwards on one side of the tool carrier.
  • the bolt can be moved out of its locked position by pulling the handle. By then turning the handle slightly, the handle is then brought into its unlocked position, in which the latch is supported on the tool carrier frame.
  • the bolt can be shaped in such a way that it has an adjusting and holding section on the handle side and a first guiding and locking section aligned parallel to it.
  • the bolt can have rod sections oriented parallel to one another on the handle side, which are connected to one another at the handle side ends via a web and are held at a certain distance from one another.
  • the bolt also has a second guide and locking section on a side opposite the handle, which is aligned transversely in alignment with the first guide and locking section.
  • the bolt can be shaped, for example, in such a way that the setting and holding section at the handle-side end has a corresponding curved profile in its further course to the opposite side of the tool carrier, so that the two open ends of the bolt point together in one direction and are aligned with one another.
  • a spring can be mounted on the bolt, by means of which the bolt can be preloaded transversely.
  • the spring can for example be designed as a helical spring which is mounted on a rod-shaped area of the bolt.
  • the helical spring is preferably supported on one side against a stop fixed on the bolt and on the other side against the tool carrier frame, so that one transverse movement of the bolt (i.e. when the bolt moves to one side of the tool carrier) the coil spring is compressed and a pretensioning force is generated.
  • the coil spring and the stop are designed and arranged in such a way that the coil spring has no or only a minimal bias in the locking position and its maximum bias in the unlocking position.
  • a ledge can be formed on the bolt with which the bolt is supported on the tool carrier frame in the unlocked position and on the actuating and holding means in the pre-locked position.
  • the shoulder can be formed, for example, by a tube which is guided and fixed over a rod-shaped region of the bolt.
  • the actuating and holding means comprise a first rotary lever and a second rotary lever, which are rotatably mounted to one another on a common axis of rotation, the first and second rotary levers being pivotable, and by engaging a tool which can be placed on the tool carrier with the first rotary lever, pivotable and the second rotary lever , for releasing the bolt from its unlocking position, which is supported on the tool carrier frame, can be brought into engagement with the bolt.
  • the actuating and holding means are accordingly formed by two rotary levers extending from an axis of rotation, the axis of rotation being mounted in the area of a lower connection point for the tool on the tool carrier frame or in an area in which a fastening eye formed on the tool is provided which the latch is pushed for connection to the tool carrier frame, engages or protrudes into the tool frame carrier.
  • a rotary lever can function as a kind of trigger and of that when the tool is placed in the tool frame protruding mounting eye deflected or actuated and thus pivoted.
  • the resulting rotary movement of the axis of rotation is correspondingly transferred to the second rotary lever, so that the second rotary lever is brought into engagement with the setting and holding section of the bolt.
  • the first rotary lever is equipped with a longer lever arm than the second rotary lever, since the former has to extend into the guide and locking section of the bolt, with which the fastening eye of the tool is locked after it has been put on, whereas the second rotary lever only extends as far as the and extends the holding portion of the bolt, which is arranged closer to the axis of rotation.
  • a spring is provided which is connected to the tool carrier frame and preferably to one of the rotary levers. It is also possible to use a spring connected to the axis of rotation. It is essential that when the first rotary lever is deflected by the fastening eye, a spring pretension is generated, so that when the fastening eye is removed from the engagement area, the actuating and holding means (first and second rotating lever) act against the actuating and holding section of the bolt under pretension or engage with this under tension.
  • a tool holder of the type described above is particularly suitable for use on a loader, such as a front loader or wheel loader, in which a frequent change of the tool is required for different loader work.
  • a corresponding method for placing and depositing a tool on a tool carrier of a loader provides that a tool carrier comprises a tool carrier frame and a locking device arranged on the tool carrier, with which a tool is or is locked on the tool carrier by a transversely movable bolt.
  • the latch is used to put the tool down Locking position moved into a transversely spring-biased unlocking position, in which the bolt is supported on the tool carrier frame or brought there to a stop, the locking device comprising the above-mentioned actuating and holding means which were brought into a spring-biased position when the tool was placed on the tool carrier ,
  • the actuating and holding means are released from the fastening eye of the tool, so that the actuating and holding means, which are under tension, move against the bolt and the bolt then moves due to the spring force of the actuating element acting on it. and releases the holding means from its unlocking position, which is supported on the tool carrier frame.
  • the actuating and holding means assume a holding position and the bolt is moved from its unlocking position into a transversely spring-biased pre-locking position. In this pre-locking position, the bolt is no longer supported on the tool carrier frame as before, but on the actuating and holding means.
  • the actuating and holding means are deflected again by the fastening eye formed on the tool and brought from the holding position into the spring-loaded position mentioned above.
  • the holding function of the positioning and holding means is released and the bolt is released so that the released bolt is released by transverse spring force moved from the pre-locking position to the locking position becomes.
  • FIG. 1 shows a loading vehicle 10 or loader in the form of an agricultural tractor 12 with a front loader 14.
  • the front loader 14 has two loading arms 16 which are coupled to the tractor 12 and extend forward in the longitudinal direction of the tractor 12.
  • a tool carrier 18 extends in the transverse direction to the loading arms 16, tool receiving areas 20, 20 ′ being formed on the tool carrier 18, in which a tool 21 in the form of a loading shovel is suspended and locked.
  • the tool carrier 18 comprises a tool carrier frame 22 manufactured in a welded construction, which is shown in detail in FIG Figure 2 can be seen.
  • the tool carrier frame comprises an upper cross strut 24 and laterally arranged lower cross struts 26 and 28.
  • the cross struts 26, 28 are formed by vertically and longitudinally oriented profiled sheets 30, 32, 34 which, according to the lower cross struts 26, 28, are arranged on both sides of the tool carrier or are arranged symmetrically to the center of the tool holder, interconnected.
  • support plates 38 provided with a bore 36 are provided which, together with further bores 40, 42, 44 formed in the profile plates 30, 32, 34, serve for mounting and guiding a locking device 46.
  • the locking device 46 comprises a bolt 48 which extends transversely to the tool carrier 18 and which is shown in detail in FIG Figure 8 is shown, and actuating and holding means 50, which are shown in detail in Figure 9 are shown.
  • the bolt 48 is rod-shaped and has a handle 52, a first guide and locking section 54 on the handle side, a second guide and locking section 56 opposite the handle side and an adjusting and holding section 58 at the end on the handle side.
  • the latch 48 In its course from the setting and holding section 58 to the opposite side of the tool carrier 18 or to the second guiding and locking section 56, the latch 48 has a curved course 60 such that open ends 62, 64 of the latch 48 together into one of the handle 52 point the way and align.
  • a shoulder 66 is formed on the bolt 48 in the region of the setting and holding section 58.
  • the shoulder 66 is formed here by one end of a tube 68 which is guided over a handle-shaped rod-shaped section 70 of the bolt 48.
  • the handle 52 is formed by a U-shaped rod with a short leg 72, a long leg 74 and a web 76, a connecting plate 78 being arranged, which is firmly connected to the two legs 72, 74 of the handle, whereby the long leg 74 extends through a hole in the connecting plate 78 and forms the handle-side first guide and locking section 54 of the bolt 48.
  • the connecting plate 78 is connected to the positioning and holding section 58 or the pipe 68.
  • the web 76 is used to grip the bolt 48, in particular when it is brought from a locked position into an unlocked position.
  • a stop 80 is formed, on which a coil spring 82 which is pushed over the (rod-shaped) bolt 48 is supported and extends in the direction of the handle 52.
  • a washer 84 is slidably mounted on the latch 48, the washer 84 having an inner bore which is larger than the diameter of the latch 48 but smaller than the diameter of the helical spring 82.
  • the disc 84 serves as a movable stop which, when the bolt 48 is actuated, is brought into engagement with the tool carrier frame 22, in particular with the profile sheet 30 on the handle side.
  • the coil spring 82 is compressed against the stop 80 and a pretensioning force is generated on the bolt 48, which in accordance with the bolt 48 in a locking position Figure 4 urges.
  • the bolt 48 is guided on its guide and locking sections 54, 56 on both sides of the tool carrier frame 22 in the bores 36 of the support plates 38, in the bores 40, 42 of the profile plates 30, 32 and in the bore 42 of the handle-side profile plate 44 or slidably mounted.
  • the bores 36, 40, 42, 44 provided for guiding or mounting the bolt 48 have a diameter which is slightly larger than an outer diameter of the rod-shaped bolt 48, so that the bolt 48 can be displaced transversely (i.e.
  • the locking device 46 comprises actuating and holding means 50, which serve to move and hold the actuating and holding section 58 of the bolt 48, as will be explained in the following.
  • the actuating and holding means 50 comprise a first rotary lever 94, a second rotary lever 96 and an axis of rotation 98 (or pivot axis), on which the two rotary levers 94, 96 are rotatably mounted, with which the two rotary levers 94, 96 are firmly connected to one another.
  • the axis of rotation 98 is pivotally mounted between the profile plates 30 and 32 on the handle side, the position of the axis of rotation 98 and the shape and size of the rotary levers 94, 96 being selected such that when the actuating and holding means 50 are pivoted about the axis of rotation 98, the first The end of the rotary lever 94 extends into the tool receiving area 20 'formed between the profile plate 30 on the handle side and the support plate 38 on the handle side, and the end of the second rotary lever 96 extends between the profile plate 30 on the handle side and the support plate 38 on the handle side with the actuating and holding section 58 of the latch 48 can engage.
  • the first rotary lever 94 is engaged by a spring 104 connected to the profile plate 30 on the handle side, by means of which a preload is generated on the actuating and holding means 50 as soon as the first rotary lever 94 is referred to Figure 9 is deflected counterclockwise around the axis of rotation 98.
  • the functionality of the tool carrier 18 is described as follows, starting from a change of a tool, namely unlocking and depositing a tool from the tool carrier 18 and then re-applying and locking a tool on the tool carrier 18:
  • the latch 48 is initially still in its locked position according to FIG Figure 4 and Figure 7 , wherein the mounting eye 108 of the tool 21 is in engagement with the latch 48. Proceeding from this, the latch 48 is now brought into the unlocking position on the handle 52 by hand by an operator, that is to say released or moved or pulled out of its locking position.
  • the washer 84 abuts the inside of the profile plate 30 on the handle side, as a result of which the bolt 48 is biased by further pulling out.
  • the bolt 48 is pulled out with increasing pretension until the shoulder 66 passes from the center of the tool carrier 18 through the bore 88 of the profile plate 32 on the handle side (as in FIG Figure 5 is shown).
  • the shoulder 66 is pushed over the edge of the bore 88 and brought there to rest on the handle-side side of the handle-side profile plate 32. Due to the pretension applied to the bolt 48, the bolt on its shoulder 66 is pressed against the edge of the bore 88 and held in the unlocking position described here (see in particular Figure 5 and Figure 11 ).
  • the tool carrier 18 In order to hang up or put down the now unlocked tool 21 from the tool carrier 18, the tool carrier 18 must be released from the hooks 106.
  • the tool carrier 18 is pivoted in such a way that an underside of the tool carrier 18 is removed from the tool 21, so that the fastening eyes 108 protruding on the tool carrier 18 in the tool receiving areas 20 ′ move out of the tool receiving areas 20 ′.
  • the tool carrier 18 can be moved freely from the attachment hooks 106.
  • the fastening eyes 108 are moved out of the tool receiving regions 20 ′, the engagement of the fastening eye 108 on the handle side with the end 100 of the first rotary lever 94 is released at the same time.
  • the pre-tension on the bolt 48 by the helical spring 82 now pulls the bolt 48 in the direction of the center of the tool carrier 18 until it comes to rest again with its shoulder 66, specifically on the side surface of the second rotary lever 96, as in particular in FIGS Figures 6 and 12 is shown.
  • the bolt 48 now assumes a spring-loaded pre-locking position and is held or blocked solely by the second rotary lever 96, while the tool carrier 18 is completely off Tool 21 separated or the tool 21 was deposited from the tool carrier 18.
  • the tool carrier 18 is prepared in this state (bolt 48 in the pre-locking position) for receiving a tool 21, the tool 21 being received as follows.
  • the tool 21 is first attached to the tool receiving areas 20 of the tool carrier 18 with the hooks 106 formed on the tool 21. This is usually done by moving the front loader 14 towards the tool 21, the tool carrier 18 being hydraulically controlled or moved under the hitch hooks 106 and being placed completely against the tool 21 in such a way that the fastening eyes 108 formed on the tool 21 enter the tool receiving areas 20, 20 'protrude into it.
  • the first rotary lever 94 protruding into the tool receiving area 20 ′ on the handle side is actuated by the fastening eye 108 on the handle side in such a way that the first rotary lever 94 is pressed away by the bolt 48.
  • the second rotary lever 96 holding or blocking the bolt 48 is thereby moved away from the bolt 48, so that the bolt 48 is released by the second rotary lever 96 and moves in the direction of the center of the tool carrier 21.
  • the bolt 48 automatically, that is automatically under pretension, assumes its locking position, the two ends 62, 64 or the guide and locking sections 54, 56 of the bolt 48 with the fastening eyes 108 and bores 36, 40, 42 on the tool carrier 21 engage and lock the tool ( Figure 7 ).

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  • Mining & Mineral Resources (AREA)
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  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Description

Es wird ein Werkzeugträger zum An- und Ablegen eines Werkzeugs für einen Frontlader offenbart. Der Werkzeugträger umfasst einen Werkzeugträgerrahmen und eine am Werkzeugträger angeordnete Verriegelungseinrichtung, mit welcher ein Werkzeug am Werkzeugträger durch einen transversal beweglichen Riegel verriegelbar ist, wobei der Riegel bei angelegtem und verriegeltem Werkzeug aus einer Verriegelungsstellung in eine transversal federvorgespannte Entriegelungsstellung bewegbar ist, in der sich der Riegel am Werkzeugträgerrahmen abstützt. Die Verriegelungseinrichtung umfasst Stell- und Haltemittel, die durch Anlegen eines Werkzeuges an den Werkzeugträger in eine federvorgespannte Stellung verbringbar sind und bei einem Ablegen des entriegelten Werkzeugs vom Werkzeugträger den Riegel mittels Federkraft von seiner am Werkzeugträgerrahmen abstützenden Entriegelungsstellung lösen, wobei die Stell- und Haltemittel eine Haltestellung einnehmen und der Riegel aus der Entriegelungsstellung in eine transversal federvorgespannte Vorverriegelungsstellung bewegbar ist, in der sich der Riegel an den Stell- und Haltemittel abstützt, wobei die Stell- und Haltemittel durch erneutes Anlegen eines Werkzeugs aus der Haltestellung in die federvorgespannte Stellung verbringbar sind und der dadurch frei gegebene Riegel durch transversale Federkraft aus der Vorverriegelungsstellung in die Verriegelungsstellung verbringbar ist, wobei der Riegel einen Griff zum manuellen Bewegen des Riegels aus der Verriegelungsstellung in die Entriegelungsstellung aufweist. Ferner wird ein Verfahren zum An- und Ablegen eines Werkzeugs für einen Lader offenbart.A tool carrier for putting on and taking off a tool for a front loader is disclosed. The tool carrier comprises a tool carrier frame and a locking device arranged on the tool carrier, with which a tool can be locked on the tool carrier by a transversely movable bolt, the bolt being movable from a locking position into a transversely spring-biased unlocking position when the tool is in place and locked, in which the bolt can be moved supported on the tool carrier frame. The locking device comprises positioning and holding means which can be brought into a spring-preloaded position by placing a tool on the tool carrier and, when the unlocked tool is put down from the tool carrier, release the bolt from its unlocking position which supports the tool carrier frame, the positioning and holding means one Assume the holding position and the bolt can be moved from the unlocking position into a transversely spring-biased pre-locking position in which the bolt is supported on the positioning and holding means, the positioning and holding means being able to be moved from the holding position into the spring-biased position by renewed application of a tool and the bolt released in this way can be moved from the pre-locking position into the locking position by means of transverse spring force, the bolt having a handle for manually moving the bolt from the locking position into the unlocking position position. Furthermore, a method for putting a tool on and off a loader is disclosed.

Es ist bekannt, Ladefahrzeuge oder Lader, insbesondere Frontlader für den Einsatz an landwirtschaftlichen Schleppern, aber auch Baufahrzeuge wie Radlader oder auch Teleskoplader mit verschiedenen Werkzeugen zu bestücken. So können beispielsweise Ladegabeln, Lanzen, Greifer oder Schaufeln als Ladewerkzeug eingesetzt werden. Die Werkzeuge werden üblicherweise an sogenannten Werkzeugträgern angeschlossen bzw. von diesen durch entsprechende Aufnahmeeinrichtungen aufgenommen. Die Werkzeugträger sind dabei üblicherweise fest mit dem vorderen Ende der Schwinge oder dem Ausleger des Ladefahrzeugs verbunden, wobei die an den Werkzeugträgern ausgebildeten Aufnahmeeinrichtungen eine Schnittstelle zum Werkzeug darstellen und es ermöglichen, dass die Werkzeuge zum einen austauschbar bzw. auswechselbar sind zum anderen aber auch entsprechend gesichert mit dem Werkzeugträger verbunden werden können. Die Aufnahmeeinrichtungen weisen dabei üblicherweise Werkzeugaufnahmen, an die das entsprechende Werkzeug angelegt wird, sowie eine Verriegelung auf, mit der das Werkzeug nach dem Anlegen am Werkzeugträger verriegelt wird. Um ein möglichst einfaches und bedienfreundliches An- und Ablegen des Werkzeugs an den bzw. von dem Werkzeugträger zu ermöglichen, sind Verriegelungseinrichtungen bekannt, die ein automatisiertes Verriegeln des Werkzeugs ermöglichen, wobei eine Verriegelung möglichst selbsttätig erfolgen soll, ohne dass eine Bedienperson die Kabine des Fahrzeugs verlassen muss. Derartige aus dem Stand der Technik bekannten Verriegelungseinrichtungen sind in der Regel aufwändig und teuer.It is known to have loading vehicles or loaders, in particular front loaders for use on agricultural tractors, but also construction vehicles such as wheel loaders or telescopic loaders different tools. For example, loading forks, lances, grabs or shovels can be used as loading tools. The tools are usually connected to so-called tool carriers or picked up by these by means of corresponding receiving devices. The tool carriers are usually firmly connected to the front end of the rocker arm or the extension arm of the loading vehicle, the receiving devices formed on the tool carriers being an interface to the tool and making it possible for the tools to be exchangeable or exchangeable on the one hand, but also accordingly can be securely connected to the tool carrier. The holding devices usually have tool holders, to which the corresponding tool is placed, and a lock, with which the tool is locked after being placed on the tool carrier. In order to enable the tool to be put on and off the tool carrier in a simple and user-friendly manner, locking devices are known which enable the tool to be locked automatically, with the locking being to be carried out as automatically as possible without an operator operating the cabin of the vehicle must leave. Such locking devices known from the prior art are generally complex and expensive.

Die US 7,674,085 B2 offenbart eine Anordnung und ein Verfahren zum Anbauen eines Werkzeugs an einen Lader. Die Anordnung sieht eine Verriegelungseinrichtung vor, die eine Position des Werkzeugs festlegt und das Werkzeug in dieser Position mit der Anordnung verriegelt. Eine Sicherungseinrichtung sieht vor, dass die Verriegelung nur stattfinden kann, wenn die korrekte Positionierung des Werkzeugs erfolgte.The US 7,674,085 B2 discloses an arrangement and method for attaching a tool to a loader. The arrangement provides a locking device which fixes a position of the tool and locks the tool in this position with the arrangement. A safety device provides that the locking can only take place if the tool has been correctly positioned.

Angesichts dessen wird die zu Grunde liegende Aufgabe darin gesehen, eine zum Stand der Technik alternative Lösung für einen Werkzeugträger mit einer einfachen und kostengünstigen Verriegelungseinrichtung vorzuschlagen.In view of this, the underlying task is seen in proposing an alternative to the prior art for a tool holder with a simple and inexpensive locking device.

Die Aufgabe wird erfindungsgemäß durch die Lehre des Patentanspruchs 1 und 7 gelöst. Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den Unteransprüchen hervor.The object is achieved by the teaching of claims 1 and 7. Further advantageous refinements and developments of the invention emerge from the subclaims.

Demnach wird ein Werkzeugträger der eingangs genannten Art derart ausgebildet, dass der Riegel griffseitig einen Stell- und Halteabschnitt und einen parallel dazu ausgerichteten ersten Führungs- und Verriegelungsabschnitt aufweist, wobei der Riegel an der griffseitig gegenüberliegenden Seite einen zweiten Führungs- und Verriegelungsabschnitt aufweist, der transversal fluchtend zum ersten Führungs- und Verriegelungsabschnitt ausgerichtet ist. Der hier offenbarte Werkzeugträger weist eine Verriegelungseinrichtung mit geringer Komplexität, geringer Teilevielfalt und hoher Sicherheit auf. Durch den vollautomatisierten Verriegelungsvorgang wird das Anlegen des Werkzeugs an den Werkzeugträger für die Bedienperson oder den Fahrer erheblich vereinfacht, da diese bzw. dieser nicht mehr die Kabine verlassen muss, um das Werkzeug zu verriegeln. Dadurch wird Zeit gespart. Der einfache Aufbau der Verriegelungseinrichtung und die geringe Teilevielfalt erleichtern die Montage in der Fertigung und tragen somit zu auch zu Kosteneinsparung bei. Die Betätigung der Stell- und Haltemittel beim Anlegen des Werkzeugs durch das Werkzeug gewährleistet, dass der Verrieglungsmechanismus erst einsetzt, wenn auch ein Werkzeug angelegt wird. Ein versehentliches Bewegen des Riegels in seine Verriegelungsstellung durch Vibrationen oder durch Bewegen des Werkzeugträgers oder des Frontladers ohne angelegtes Werkzeug wird effektiv vermieden. Der Riegel kann über einen Griff zugänglich sein, der seitlich am Werkzeugträger angeordnet ist bzw. sich an einer Seite des Werkzeugträgers nach außen erstreckt. Durch Ziehen am Griff kann der Riegel aus seiner Verriegelungsstellung herausbewegt werden. Durch ein sich daran anschließendes leichtes Verdrehen des Griffs wird der Griff dann in seine Entriegelungsstellung gebracht, in der sich der Riegel am Werkzeugträgerrahmen abstützt. Der Riegel kann derart geformt sein, dass dieser griffseitig einen Stell- und Halteabschnitt und einen parallel dazu ausgerichteten ersten Führungs- und Verriegelungsabschnitt aufweist. Dazu kann der Riegel griffseitig zueinander parallel ausgerichtete Stangenabschnitte aufweisen, die an griffseitigen Enden über einen Steg miteinander verbunden und in einem bestimmten Abstand zueinander gehalten werden. Der Riegel weist ferner an einer griffseitig gegenüberliegenden Seite einen zweiten Führungs- und Verriegelungsabschnitt auf, der transversal fluchtend zum ersten Führungs- und Verriegelungsabschnitt ausgerichtet ist. Der Riegel kann beispielsweise derart geformt sein, dass der Stell- und Halteabschnitt am griffseitigen Ende in seinem weiteren Verlauf zur gegenüberliegenden Seite des Werkzeugträgers einen entsprechenden gebogenen Verlauf aufweist, so dass die beiden offenen Enden des Riegels gemeinsam in eine Richtung zeigen und zueinander fluchten.Accordingly, a tool carrier of the type mentioned at the outset is designed in such a way that the latch has an actuating and holding section on the handle side and a first guide and locking section aligned parallel thereto, the latch having a second guide and locking section on the handle side opposite, which is transverse is aligned with the first guide and locking section. The tool carrier disclosed here has a locking device with low complexity, low variety of parts and high security. The fully automated locking process considerably simplifies the application of the tool to the tool carrier for the operator or the driver, since the operator or the driver no longer has to leave the cabin to lock the tool. This saves time. The simple structure of the locking device and the small number of parts facilitate assembly in production and thus also contribute to cost savings. The actuation of the actuating and holding means when the tool is applied by the tool ensures that the locking mechanism does not start until a tool is also applied. Accidental movement of the bolt into its locking position by vibrations or by moving the Tool carrier or the front loader without tools is effectively avoided. The bolt can be accessed via a handle which is arranged on the side of the tool carrier or extends outwards on one side of the tool carrier. The bolt can be moved out of its locked position by pulling the handle. By then turning the handle slightly, the handle is then brought into its unlocked position, in which the latch is supported on the tool carrier frame. The bolt can be shaped in such a way that it has an adjusting and holding section on the handle side and a first guiding and locking section aligned parallel to it. For this purpose, the bolt can have rod sections oriented parallel to one another on the handle side, which are connected to one another at the handle side ends via a web and are held at a certain distance from one another. The bolt also has a second guide and locking section on a side opposite the handle, which is aligned transversely in alignment with the first guide and locking section. The bolt can be shaped, for example, in such a way that the setting and holding section at the handle-side end has a corresponding curved profile in its further course to the opposite side of the tool carrier, so that the two open ends of the bolt point together in one direction and are aligned with one another.

Auf dem Riegel kann eine Feder gelagert sein, durch welche der Riegel transversal vorspannbar ist. Die Feder kann beispielsweise als Schraubenfeder ausgebildet sein, die auf einem stangenförmigen Bereich des Riegels gelagert ist. Die Schraubenfeder stützt sich vorzugsweise auf einer Seite gegen einen auf dem Riegel festgelegten Anschlag und auf der anderen Seite gegen den Werkzeugträgerrahmen ab, so dass bei einer transversalen Bewegung des Riegels (also bei einer Bewegung des Riegels zu einer Seite des Werkzeugträgers) die Schraubenfeder komprimiert und eine Vorspannkraft generiert wird. Die Schraubenfeder und der Anschlag sind derart ausgebildet und angeordnet, dass die Schraubenfeder in der Verriegelungsstellung keine bzw. nur eine minimale und in der Entriegelungsstellung ihre maximale Vorspannung aufweist.A spring can be mounted on the bolt, by means of which the bolt can be preloaded transversely. The spring can for example be designed as a helical spring which is mounted on a rod-shaped area of the bolt. The helical spring is preferably supported on one side against a stop fixed on the bolt and on the other side against the tool carrier frame, so that one transverse movement of the bolt (i.e. when the bolt moves to one side of the tool carrier) the coil spring is compressed and a pretensioning force is generated. The coil spring and the stop are designed and arranged in such a way that the coil spring has no or only a minimal bias in the locking position and its maximum bias in the unlocking position.

Am Riegel kann ein Absatz ausgebildet sein, mit welchem sich der Riegel in der Entriegelungsstellung am Werkzeugträgerrahmen und in der Vorverriegelungsstellung am Stell- und Haltemittel abstützt. Der Absatz kann beispielsweise durch ein über einen stangenförmigen Bereich des Riegels geführtes und fixiertes Rohr ausgebildet sein.A ledge can be formed on the bolt with which the bolt is supported on the tool carrier frame in the unlocked position and on the actuating and holding means in the pre-locked position. The shoulder can be formed, for example, by a tube which is guided and fixed over a rod-shaped region of the bolt.

Die Stell- und Haltemittel umfassen einen ersten Drehhebel und einen zweiten Drehhebel, die auf einer gemeinsamen Drehachse drehfest zueinander gelagert sind, wobei der erste und zweite Drehhebel, durch in Eingriff bringen eines am Werkzeugträger anlegbaren Werkzeugs mit dem ersten Drehhebel, schwenkbar und der zweite Drehhebel, zum Lösen des Riegels von seiner am Werkzeugträgerrahmen abstützenden Entriegelungsstellung, mit dem Riegel in Eingriff bringbar ist. Die Stell- und Haltemittel werden demnach durch zwei sich von einer Drehachse erstreckende Drehhebel, gebildet, wobei die Drehachse im Bereich einer unteren Anschlussstelle für das Werkzeug am Werkzeugträgerrahmen gelagert ist bzw. in einem Bereich gelagert ist, in dem ein am Werkzeug ausgebildetes Befestigungsauge, durch welches der Riegel zur Verbindung mit dem Werkzeugträgerrahmen geschoben wird, in den Werkzeugrahmenträger eingreift bzw. hineinragt. Beispielsweise kann der ein Drehhebel als eine Art Trigger funktionieren und von dem beim Anlegen des Werkzeugs in den Werkzeugrahmen hineinragenden Befestigungsauge ausgelenkt bzw. betätigt und damit geschwenkt werden. Die daraus resultierend Drehbewegung der Drehachse überträgt sich entsprechend auf den zweiten Drehhebel, so dass der zweite Drehhebel mit dem Stell- und Halteabschnitt des Riegels in Eingriff gebracht wird. Dabei ist der erste Drehhebel mit einem längeren Hebelarm ausgestattet als der zweite Drehhebel, da ersterer sich bis in den Führungs- und Verriegelungsabschnitt des Riegels erstrecken muss, mit welchem das Befestigungsauge des Werkzeugs nach dem Anlegen verriegelt wird, hingegen der zweite Drehhebel sich nur bis zum Stell- und Halteabschnitt des Riegels erstreckt, welcher näher zur Drehachse angeordnet ist.The actuating and holding means comprise a first rotary lever and a second rotary lever, which are rotatably mounted to one another on a common axis of rotation, the first and second rotary levers being pivotable, and by engaging a tool which can be placed on the tool carrier with the first rotary lever, pivotable and the second rotary lever , for releasing the bolt from its unlocking position, which is supported on the tool carrier frame, can be brought into engagement with the bolt. The actuating and holding means are accordingly formed by two rotary levers extending from an axis of rotation, the axis of rotation being mounted in the area of a lower connection point for the tool on the tool carrier frame or in an area in which a fastening eye formed on the tool is provided which the latch is pushed for connection to the tool carrier frame, engages or protrudes into the tool frame carrier. For example, a rotary lever can function as a kind of trigger and of that when the tool is placed in the tool frame protruding mounting eye deflected or actuated and thus pivoted. The resulting rotary movement of the axis of rotation is correspondingly transferred to the second rotary lever, so that the second rotary lever is brought into engagement with the setting and holding section of the bolt. It is the first rotary lever is equipped with a longer lever arm than the second rotary lever, since the former has to extend into the guide and locking section of the bolt, with which the fastening eye of the tool is locked after it has been put on, whereas the second rotary lever only extends as far as the and extends the holding portion of the bolt, which is arranged closer to the axis of rotation.

Ferner ist eine Feder vorgesehen, welche mit dem Werkzeugträgerrahmen und vorzugsweise mit einem der Drehhebel in Verbindung steht. Es ist auch möglich hier eine mit der Drehachse in Verbindung stehende Feder einzusetzen. Wesentlich ist, dass bei einer Auslenkung des ersten Drehhebels durch das Befestigungsauge, eine Federvorspannung erzeugt wird, so dass bei Entfernen des Befestigungsauges aus dem Eingriffsbereich die Stell- und Haltemittel (erster und zweiter Drehhebel) unter Vorspannung gegen den Stell- und Halteabschnitt des Riegels wirken bzw. mit diesem unter Vorspannung in Eingriff treten.Furthermore, a spring is provided which is connected to the tool carrier frame and preferably to one of the rotary levers. It is also possible to use a spring connected to the axis of rotation. It is essential that when the first rotary lever is deflected by the fastening eye, a spring pretension is generated, so that when the fastening eye is removed from the engagement area, the actuating and holding means (first and second rotating lever) act against the actuating and holding section of the bolt under pretension or engage with this under tension.

Ein Werkzeughalter der oben beschriebenen Art eignet sich besonders für den Einsatz an einem Lader, wie beispielsweise einem Frontlader oder Radlader, bei dem insbesondere ein häufiges Wechseln des Werkzeugs für unterschiedliche Laderarbeiten erforderlich ist.A tool holder of the type described above is particularly suitable for use on a loader, such as a front loader or wheel loader, in which a frequent change of the tool is required for different loader work.

Ein entsprechendes Verfahren zum An- und Ablegen eines Werkzeugs an einen Werkzeugträger eines Laders sieht vor, dass ein Werkzeugträger einen Werkzeugträgerrahmen und eine am Werkzeugträger angeordnete Verriegelungseinrichtung umfasst, mit welcher ein Werkzeug am Werkzeugträger durch einen transversal beweglichen Riegel verriegelt wird bzw. ist. Der Riegel wird zum Ablegen des Werkzeugs aus einer Verriegelungsstellung in eine transversal federvorgespannte Entriegelungsstellung bewegt, in der sich der Riegel am Werkzeugträgerrahmen abstützt bzw. dort auf Anschlag gebracht wird, wobei die Verriegelungseinrichtung die oben genannten Stell- und Haltemittel umfasst, die beim Anlegen des Werkzeuges an den Werkzeugträger in eine federvorgespannte Stellung gebracht wurden. Beim Ablegen des entriegelten Werkzeugs vom Werkzeugträger werden die Stell- und Haltemittel von dem Befestigungsauge des Werkzeugs frei gegeben, so dass die unter Vorspannung stehenden Stell- und Haltemittel sich gegen den Riegel bewegen und sich der Riegel dann aufgrund der auf ihn einwirkenden Federkraft der Stell- und Haltemittel von seiner am Werkzeugträgerrahmen abstützenden Entriegelungsstellung löst. In dieser Wechselwirkung nehmen die Stell- und Haltemittel eine Haltestellung ein und der Riegel wird aus seiner Entriegelungsstellung in eine transversal federvorgespannte Vorverriegelungsstellung bewegt. In dieser Vorverriegelungsstellung stützt sich der Riegel nicht mehr wie zuvor am Werkzeugträgerrahmen sondern an den Stell- und Haltemittel ab. Beim erneuten Anlegen eines Werkzeugs werden die Stell- und Haltemittel erneut durch das am Werkzeug ausgebildete Befestigungsauge ausgelenkt und aus der Haltestellung in die zuvor genannte federvorgespannte Stellung gebracht. Da der Riegel sich inzwischen in seiner Vorverriegelungsstellung befindet und sich am Stell- und Haltemittel abstützt und nicht wie in der Entriegelungsstellung am Werkzeugträgerrahmen, wird die Haltefunktion der Stell- und Haltemittel aufgehoben und der Riegel frei gegeben, so dass der frei gegebene Riegel durch transversale Federkraft aus der Vorverriegelungsstellung in die Verriegelungsstellung verbracht wird.A corresponding method for placing and depositing a tool on a tool carrier of a loader provides that a tool carrier comprises a tool carrier frame and a locking device arranged on the tool carrier, with which a tool is or is locked on the tool carrier by a transversely movable bolt. The latch is used to put the tool down Locking position moved into a transversely spring-biased unlocking position, in which the bolt is supported on the tool carrier frame or brought there to a stop, the locking device comprising the above-mentioned actuating and holding means which were brought into a spring-biased position when the tool was placed on the tool carrier , When the unlocked tool is put down from the tool carrier, the actuating and holding means are released from the fastening eye of the tool, so that the actuating and holding means, which are under tension, move against the bolt and the bolt then moves due to the spring force of the actuating element acting on it. and releases the holding means from its unlocking position, which is supported on the tool carrier frame. In this interaction, the actuating and holding means assume a holding position and the bolt is moved from its unlocking position into a transversely spring-biased pre-locking position. In this pre-locking position, the bolt is no longer supported on the tool carrier frame as before, but on the actuating and holding means. When a tool is put on again, the actuating and holding means are deflected again by the fastening eye formed on the tool and brought from the holding position into the spring-loaded position mentioned above. Since the bolt is now in its pre-locking position and is supported on the positioning and holding means and not as in the unlocking position on the tool carrier frame, the holding function of the positioning and holding means is released and the bolt is released so that the released bolt is released by transverse spring force moved from the pre-locking position to the locking position becomes.

Anhand der Zeichnung, die ein Ausführungsbeispiel der Erfindung zeigt, werden nachfolgend die Erfindung sowie weitere Vorteile und vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung näher beschrieben und erläutert.Based on the drawing, which shows an embodiment of the invention, the invention and further advantages and advantageous developments and refinements of the invention are described and explained in more detail below.

Es zeigt:

Fig. 1
eine schematische Seitenansicht eines landwirtschaftlichen Fahrzeug mit Frontlader und mit einem am Frontlader angeordneten Werkzeugträger,
Fig. 2
eine schematische perspektivische Vorderansicht des Werkzeugträgers aus Figur 1,
Fig. 3
eine schematische Seitenansicht eines Werkzeugs für den Werkzeugträger aus Figur 1 und 2,
Fig. 4
eine schematische perspektivische Vorderansicht des Werkzeugträgers aus Figur 1 in Teildarstellung mit einer Verriegelungseinrichtung in Verriegelungsstellung,
Fig. 5
eine schematische perspektivische Vorderansicht des Werkzeugträgers aus Figur 1 in Teildarstellung mit der Verriegelungseinrichtung in einer Entriegelungsstellung,
Fig. 6
eine schematische perspektivische Vorderansicht des Werkzeugträgers aus Figur 1 in Teildarstellung mit der Verriegelungseinrichtung in einer Vorverriegelungsstellung,
Fig. 7
eine weitere schematische perspektivische Vorderansicht des Werkzeugträgers aus Figur 1 in Teildarstellung mit der Verriegelungseinrichtung in Verriegelungsstellung,
Fig. 8
eine schematische perspektivische Ansicht eines Riegels der Verriegelungseinrichtung aus den Figuren 4 bis 7,
Fig. 9
eine schematische perspektivische Ansicht von Stell- und Haltemittels der Verriegelungseinrichtung aus den Figuren 4 bis 7,
Fig. 10
eine schematische Querschnittsansicht des Riegels am Werkzeugträger im Bereich der Stell- und Haltemittel in Verriegelungsstellung,
Fig. 11
eine schematische Querschnittsansicht des Riegels am Werkzeugträger im Bereich der Stell- und Haltemittel in Entriegelungsstellung und
Fig. 12
eine schematische Querschnittsansicht des Riegels am Werkzeugträger im Bereich der Stell- und Haltemittel in Vorverriegelungsstellung.
It shows:
Fig. 1
1 shows a schematic side view of an agricultural vehicle with a front loader and with a tool carrier arranged on the front loader,
Fig. 2
a schematic perspective front view of the tool carrier from Figure 1 .
Fig. 3
is a schematic side view of a tool for the tool carrier Figure 1 and 2 .
Fig. 4
a schematic perspective front view of the tool carrier from Figure 1 in partial representation with a locking device in the locking position,
Fig. 5
a schematic perspective front view of the tool carrier from Figure 1 in partial representation with the locking device in an unlocking position,
Fig. 6
a schematic perspective front view of the tool carrier from Figure 1 in partial representation with the locking device in a pre-locking position,
Fig. 7
a further schematic perspective front view of the tool carrier from Figure 1 in partial representation with the locking device in the locking position,
Fig. 8
is a schematic perspective view of a bolt of the locking device from the Figures 4 to 7 .
Fig. 9
is a schematic perspective view of the actuating and holding means of the locking device from the Figures 4 to 7 .
Fig. 10
2 shows a schematic cross-sectional view of the bolt on the tool carrier in the area of the positioning and holding means in the locking position,
Fig. 11
is a schematic cross-sectional view of the bolt on the tool carrier in the area of the actuating and holding means in the unlocked position and
Fig. 12
is a schematic cross-sectional view of the bolt on the tool carrier in the area of the actuating and holding means in the pre-locking position.

Figur 1 zeigt ein Ladefahrzeug 10 bzw. Lader in Form eines landwirtschaftlichen Schleppers 12 mit einem Frontlader 14. Der Frontlader 14 weist zwei an den Schlepper 12 gekoppelte, sich in Längsrichtung des Schleppers 12 nach vorn erstreckende Ladeschwingen 16 auf. Am vorderen Ende der Ladeschwingen 16 erstreckt sich in Querrichtung zu den Ladeschwingen 16 ein Werkzeugträger 18, wobei am Werkzeugträger 18 Werkzeugaufnahmebereiche 20, 20' ausgebildet sind, in denen ein Werkzeug 21 in Form einer Ladeschaufel eingehängt und verriegelt ist. Figure 1 shows a loading vehicle 10 or loader in the form of an agricultural tractor 12 with a front loader 14. The front loader 14 has two loading arms 16 which are coupled to the tractor 12 and extend forward in the longitudinal direction of the tractor 12. At the front end of the loading arms 16, a tool carrier 18 extends in the transverse direction to the loading arms 16, tool receiving areas 20, 20 ′ being formed on the tool carrier 18, in which a tool 21 in the form of a loading shovel is suspended and locked.

Der Werkzeugträger 18 sowie diesbezügliche Einzelheiten werden im Folgenden anhand der Figuren 2 und 4 bis 12 erläutert.The tool carrier 18 and related details are described below with reference to the Figures 2 and 4 to 12 explained.

Der Werkzeugträger 18 umfasst einen in Schweißkonstruktion hergestellten Werkzeugträgerrahmen 22, der im Detail in Figur 2 zu erkennen ist. Der Werkzeugträgerrahmen umfasst eine obere Querstrebe 24, sowie seitlich angeordnete untere Querstreben 26 und 28. Die Querstreben 26, 28 werden durch vertikal und in Längsrichtung ausgerichtete Profilbleche 30, 32, 34, die gemäß der unteren Querstreben 26, 28 jeweils beidseitig des Werkzeugträgers bzw. symmetrisch zur Werkzeugträgermitte angeordnet sind, miteinander verbunden. Ferner sind mit einer Bohrung 36 versehene Stützbleche 38 vorgesehen, die gemeinsam mit weiteren in den Profilblechen 30, 32, 34 ausgebildeten Bohrungen 40, 42, 44 zur Lagerung und Führung einer Verriegelungseinrichtung 46 dienen.The tool carrier 18 comprises a tool carrier frame 22 manufactured in a welded construction, which is shown in detail in FIG Figure 2 can be seen. The tool carrier frame comprises an upper cross strut 24 and laterally arranged lower cross struts 26 and 28. The cross struts 26, 28 are formed by vertically and longitudinally oriented profiled sheets 30, 32, 34 which, according to the lower cross struts 26, 28, are arranged on both sides of the tool carrier or are arranged symmetrically to the center of the tool holder, interconnected. Furthermore, support plates 38 provided with a bore 36 are provided which, together with further bores 40, 42, 44 formed in the profile plates 30, 32, 34, serve for mounting and guiding a locking device 46.

Die Verriegelungseinrichtung 46 umfasst einen sich quer zum Werkzeugträger 18 erstreckenden Riegel 48, der im Detail in Figur 8 dargestellt ist, sowie Stell- und Haltemittel 50, die im Detail in Figur 9 dargestellt sind.The locking device 46 comprises a bolt 48 which extends transversely to the tool carrier 18 and which is shown in detail in FIG Figure 8 is shown, and actuating and holding means 50, which are shown in detail in Figure 9 are shown.

Der Riegel 48 ist stangenförmig ausgebildet und weist einen Griff 52, einen griffseitigen ersten Führungs- und Verriegelungsabschnitt 54, einen der Griffseite gegenüberliegenden zweiten Führungs- und Verriegelungsabschnitt 56 und einen Stell- und Halteabschnitt 58 am griffseitigen Ende auf. In seinem Verlauf vom Stell- und Halteabschnitt 58 zur gegenüberliegenden Seite des Werkzeugträgers 18 bzw. zum zweiten Führungs- und Verriegelungsabschnitt 56 weist der Riegel 48 einen gebogenen Verlauf 60 auf, derart, dass offene Enden 62, 64 des Riegels 48 gemeinsam in eine vom Griff 52 weg weisende Richtung zeigen und zueinander fluchten. Ferner ist an dem Riegel 48 im Bereich des Stell- und Halteabschnitts 58 ein Absatz 66 ausgebildet. Der Absatz 66 wird hier durch ein Ende eines Rohres 68 gebildet, welches über einen griffseitigen stangeförmigen Abschnitt 70 des Riegels 48 geführt ist. Der Griff 52 ist durch eine U-förmig gebogene Stange mit einem kurzen Schenkel 72, einem langen Schenkel 74 und einem Steg 76 geformt, wobei ein Verbindungsblech 78 angeordnet ist, welches fest mit den beiden Schenkeln 72, 74 des Griffs verbunden ist, wobei sich der lange Schenkel 74 durch eine Bohrung im Verbindungsblech 78 erstreckt und den griffseitigen ersten Führungs- und Verriegelungsabschnitt 54 des Riegels 48 bildet. Zwischen den Schenkeln 72, 74 ist das Verbindungsblech 78 mit dem Stell- und Halteabschnitt 58 bzw. dem Rohr 68 verbunden. Der Steg 76 dient zum Greifen des Riegels 48, insbesondere, wenn dieser aus einer Verriegelungsstellung in eine Entriegelungsstellung gebracht wird. Zwischen dem gebogenen Verlauf 60 des Riegels 48 und dem Absatz 66 ist an dem Riegel 48 ein Anschlag 80 ausgebildet, an dem sich eine über den (stangenförmigen) Riegel 48 geschobene Schraubenfeder 82 abstützt und sich in Richtung des Griffes 52 erstreckt. Am Ende der Schraubenfeder 82 ist auf dem Riegel 48 eine Scheibe 84 verschiebbar gelagert, wobei die Scheibe 84 eine Innenbohrung aufweist, die größer als der Durchmesser des Riegels 48 jedoch kleiner als der Durchmesser der Schraubenfeder 82 ist. Die Scheibe 84 dient als beweglicher Anschlag, der bei einem Betätigen des Riegels 48 mit dem Werkzeugträgerrahmen 22, insbesondere mit dem griffseitigen Profilblech 30 in Eingriff gebracht wird. Als Folge dessen wird die Schraubenfeder 82 gegen den Anschlag 80 komprimiert und eine Vorspannkraft am Riegel 48 erzeugt, die den Riegel 48 in eine Verriegelungsstellung gemäß Figur 4 drängt. Wie schon erwähnt, wird der Riegel 48 an seinen Führungs- und Verriegelungsabschnitten 54, 56 beidseitig des Werkzeugträgerrahmens 22 in den Bohrungen 36 der Stützbleche 38, in den Bohrungen 40, 42 der Profilbleche 30, 32 sowie in der Bohrung 42 des griffseitigen Profilblechs 44 geführt bzw. verschiebbar gelagert. Die zur Führung bzw. Lagerung des Riegels 48 vorgesehenen Bohrungen 36, 40, 42, 44 besitzen einen Durchmesser, der geringfügig größer ist als ein Außendurchmesser des stangenförmigen Riegels 48, so dass der Riegel 48 transversal verschiebbar (also in Querrichtung zum Frontlader bzw. in Richtung der Breite des Werkzeugträgers 18), jedoch radial fixiert ist. Der Stell- und Halteabschnitt 58 des Riegels 48 wird ebenfalls durch die griffseitigen Profilbleche 30, 32, 34 geführt. Dazu sind Bohrungen 86, 88, 90 vorgesehen, die einen größeren Durchmesser aufweisen als die am Stell- und Halteabschnitt 58 des Riegels 48 ausgebildeten Außendurchmesser, mit dem Hintergrund, dass der Stell- und Halteabschnitt 58 des Riegels 48 in seiner Führung durch die Bohrungen 86, 88, 90 radial spielbehaftet ist und um eine Längsachse 92 des Führungs- und Verriegelungsabschnitts 54 herum radial versetzbar bzw. schwenkbar ist, wie insbesondere in den Figuren 10 bis 12 verdeutlicht wird.The bolt 48 is rod-shaped and has a handle 52, a first guide and locking section 54 on the handle side, a second guide and locking section 56 opposite the handle side and an adjusting and holding section 58 at the end on the handle side. In its course from the setting and holding section 58 to the opposite side of the tool carrier 18 or to the second guiding and locking section 56, the latch 48 has a curved course 60 such that open ends 62, 64 of the latch 48 together into one of the handle 52 point the way and align. Furthermore, a shoulder 66 is formed on the bolt 48 in the region of the setting and holding section 58. The shoulder 66 is formed here by one end of a tube 68 which is guided over a handle-shaped rod-shaped section 70 of the bolt 48. The handle 52 is formed by a U-shaped rod with a short leg 72, a long leg 74 and a web 76, a connecting plate 78 being arranged, which is firmly connected to the two legs 72, 74 of the handle, whereby the long leg 74 extends through a hole in the connecting plate 78 and forms the handle-side first guide and locking section 54 of the bolt 48. Between the legs 72, 74, the connecting plate 78 is connected to the positioning and holding section 58 or the pipe 68. The web 76 is used to grip the bolt 48, in particular when it is brought from a locked position into an unlocked position. Between the curved course 60 of the bolt 48 and the shoulder 66 is on the bolt 48, a stop 80 is formed, on which a coil spring 82 which is pushed over the (rod-shaped) bolt 48 is supported and extends in the direction of the handle 52. At the end of the helical spring 82, a washer 84 is slidably mounted on the latch 48, the washer 84 having an inner bore which is larger than the diameter of the latch 48 but smaller than the diameter of the helical spring 82. The disc 84 serves as a movable stop which, when the bolt 48 is actuated, is brought into engagement with the tool carrier frame 22, in particular with the profile sheet 30 on the handle side. As a result, the coil spring 82 is compressed against the stop 80 and a pretensioning force is generated on the bolt 48, which in accordance with the bolt 48 in a locking position Figure 4 urges. As already mentioned, the bolt 48 is guided on its guide and locking sections 54, 56 on both sides of the tool carrier frame 22 in the bores 36 of the support plates 38, in the bores 40, 42 of the profile plates 30, 32 and in the bore 42 of the handle-side profile plate 44 or slidably mounted. The bores 36, 40, 42, 44 provided for guiding or mounting the bolt 48 have a diameter which is slightly larger than an outer diameter of the rod-shaped bolt 48, so that the bolt 48 can be displaced transversely (i.e. in the transverse direction to the front loader or in Direction of the width of the tool carrier 18), but is fixed radially. The positioning and holding section 58 of the bolt 48 is also guided through the profile plates 30, 32, 34 on the handle side. For this purpose, bores 86, 88, 90 are provided which have a larger diameter than the outer diameters formed on the setting and holding section 58 of the bolt 48, with the background that the setting and The holding section 58 of the bolt 48 is radially subject to play in its guidance through the bores 86, 88, 90 and can be radially displaced or pivoted about a longitudinal axis 92 of the guiding and locking section 54, as in particular in FIGS Figures 10 to 12 is made clear.

Ferner umfasst die Verriegelungseinrichtung 46 Stell- und Haltemittel 50, die zum Versetzen und Halten des Stell- und Halteabschnitts 58 des Riegels 48 dienen, wie im folgendem verdeutlicht wird. Die Stell- und Haltemittel 50 umfassen einen ersten Drehhebel 94, einen zweiten Drehhebel 96 und eine Drehachse 98 (oder Schwenkachse), auf welcher die beiden Drehhebel 94, 96 drehfest gelagert sind, womit die beiden Drehhebel 94, 96 zueinander fest in Verbindung stehen. Die Drehachse 98 ist zwischen den griffseitigen Profilplatten 30 und 32 schwenkbar gelagert, wobei die Position der Drehachse 98 sowie die Form und Größe der Drehhebel 94, 96 so gewählt sind, dass bei einem Schwenken der Stell- und Haltemittel 50 um die Drehachse 98 der erste Drehhebel 94 mit seinem Ende 100 bis in den zwischen der griffseitigen Profilplatte 30 und dem griffseitigen Stützblech 38 ausgebildeten Werkzeugaufnahmebereich 20' hineinragt und der zweite Drehhebel 96 mit seinem Ende 102 zwischen der griffseitigen Profilplatte 30 und dem griffseitigen Stützblech 38 mit dem Stell- und Halteabschnitt 58 des Riegels 48 in Eingriff treten kann. Am ersten Drehhebel 94 greift eine mit der griffseitigen Profilplatte 30 verbundene Feder 104 an, durch welche eine Vorspannung an den Stell- und Haltemitteln 50 erzeugt wird, sobald der erste Drehhebel 94 in Bezug auf Figur 9 entgegen dem Uhrzeigersinn um die Drehachse 98 ausgelenkt wird.Furthermore, the locking device 46 comprises actuating and holding means 50, which serve to move and hold the actuating and holding section 58 of the bolt 48, as will be explained in the following. The actuating and holding means 50 comprise a first rotary lever 94, a second rotary lever 96 and an axis of rotation 98 (or pivot axis), on which the two rotary levers 94, 96 are rotatably mounted, with which the two rotary levers 94, 96 are firmly connected to one another. The axis of rotation 98 is pivotally mounted between the profile plates 30 and 32 on the handle side, the position of the axis of rotation 98 and the shape and size of the rotary levers 94, 96 being selected such that when the actuating and holding means 50 are pivoted about the axis of rotation 98, the first The end of the rotary lever 94 extends into the tool receiving area 20 'formed between the profile plate 30 on the handle side and the support plate 38 on the handle side, and the end of the second rotary lever 96 extends between the profile plate 30 on the handle side and the support plate 38 on the handle side with the actuating and holding section 58 of the latch 48 can engage. The first rotary lever 94 is engaged by a spring 104 connected to the profile plate 30 on the handle side, by means of which a preload is generated on the actuating and holding means 50 as soon as the first rotary lever 94 is referred to Figure 9 is deflected counterclockwise around the axis of rotation 98.

Ausgehend von einem Wechsel eines Werkzeugs, nämlich einem Entriegeln und Ablegen eines Werkzeugs vom Werkzeugträger 18 und anschließendem erneuten Anlegen und Verriegeln eines Werkzeugs am Werkzeugträger 18 wird die Funktionalität des Werkzeugträgers 18 wie folgt beschrieben:
Der Riegel 48 befindet sich zum Ablegen des Werkzeugs zunächst noch in seiner Verriegelungsstellung gemäß Figur 4 und Figur 7, wobei das Befestigungsauge 108 des Werkzeugs 21 mit dem Riegel 48 in Eingriff steht. Ausgehend hiervon wird der Riegel 48 nun am Griff 52 durch Hand anlegen einer Bedienperson in die Entriegelungsstellung verbracht, das heißt gelöst bzw. aus seiner Verriegelungsstellung heraus bewegt bzw. gezogen. Beim Herausziehen des Riegels 48 stößt die Scheibe 84 auf die Innenseite der griffseitigen Profilplatte 30, wodurch der Riegel 48 durch weiterführendes Herausziehen vorgespannt wird. Der Riegel 48 wird dabei unter zunehmender Vorspannung soweit herausgezogen, bis der Absatz 66 von der Mitte des Werkzeugträgers 18 her durch die Bohrung 88 der griffseitigen Profilplatte 32 tritt (wie in Figur 5 dargestellt ist). Durch leichtes Schwenken des Riegels 48 um die Längsachse 92 (aus der in Figur 10 gezeigten Position heraus in die in Figur 11 gezeigte Position), wird der Absatz 66 über den Rand der Bohrung 88 geschoben und dort zur Anlage an der griffseitigen Seite der griffseitigen Profilplatte 32 gebracht. Durch die am Riegel 48 aufgebrachte Vorspannung wird der Riegel an seinem Absatz 66 gegen den Rand der Bohrung 88 gedrückt und in der hier beschriebenen Entriegelungsstellung gehalten (siehe insbesondere Figur 5 und Figur 11).The functionality of the tool carrier 18 is described as follows, starting from a change of a tool, namely unlocking and depositing a tool from the tool carrier 18 and then re-applying and locking a tool on the tool carrier 18:
The latch 48 is initially still in its locked position according to FIG Figure 4 and Figure 7 , wherein the mounting eye 108 of the tool 21 is in engagement with the latch 48. Proceeding from this, the latch 48 is now brought into the unlocking position on the handle 52 by hand by an operator, that is to say released or moved or pulled out of its locking position. When the bolt 48 is pulled out, the washer 84 abuts the inside of the profile plate 30 on the handle side, as a result of which the bolt 48 is biased by further pulling out. The bolt 48 is pulled out with increasing pretension until the shoulder 66 passes from the center of the tool carrier 18 through the bore 88 of the profile plate 32 on the handle side (as in FIG Figure 5 is shown). By slightly pivoting the bolt 48 about the longitudinal axis 92 (from the in Figure 10 position shown in the in Figure 11 position shown), the shoulder 66 is pushed over the edge of the bore 88 and brought there to rest on the handle-side side of the handle-side profile plate 32. Due to the pretension applied to the bolt 48, the bolt on its shoulder 66 is pressed against the edge of the bore 88 and held in the unlocking position described here (see in particular Figure 5 and Figure 11 ).

Um das nun entriegelte Werkzeug 21 vom Werkzeugträger 18 abzuhängen bzw. abzulegen, muss der Werkzeugträger 18 von den Anhängehaken 106 gelöst werden. Dabei wird der Werkzeugträger 18 derart geschwenkt, dass eine Unterseite des Werkzeugträgers 18 vom Werkzeug 21 entfernt wird, so dass sich die am Werkzeugträger 18 in den Werkzeugaufnahmebereichen 20' hineinragenden Befestigungsaugen 108 aus den Werkzeugaufnahmebereichen 20' heraus bewegen. Nach dem Herausbewegen der Befestigungsaugen 108 kann der Werkzeugträger 18 ungehindert aus den Anhängehaken 106 heraus bewegt werden. Beim Herausbewegen der Befestigungsaugen 108 aus den Werkzeugaufnahmebereichen 20' wird gleichzeitig der Eingriff des griffseitigen Befestigungsauges 108 mit dem Ende 100 des ersten Drehhebels 94 gelöst. Die bei angelegtem Werkzeug 21 durch das griffseitige Befestigungsauge 108 hervorgerufene Blockade der vorgespannten Stell- und Haltemittel 50 wird damit aufgehoben. Infolge dessen schwenken die Drehhebel unter Vorspannung in Richtung des Riegels 48, wobei der zweite Drehhebel 96 unter Vorspannung gegen den Riegel 48 drückt und eine Schwenkbewegung des Riegels 48 um die Längsachse 92 auslöst, woraufhin der Riegel 48 aus seiner Stellung (Absatz 66 liegt an der Profilplatte 32 am Rand der Bohrung 88 an, gemäß Figuren 5 und 11) herausbewegt wird. Die weiterhin am Riegel 48 wirkende Vorspannung durch die Schraubenfeder 82 zieht nunmehr den Riegel 48 in Richtung der Mitte des Werkzeugträgers 18, bis dieser erneut mit seinem Absatz 66 zur Anlage kommt, und zwar an der Seitenfläche des zweiten Drehhebels 96, wie insbesondere in den Figuren 6 und 12 dargestellt ist. Der Riegel 48 nimmt jetzt eine federvorgespannte Vorverriegelungsstellung ein und wird allein durch den zweiten Drehhebel 96 gehalten bzw. blockiert, während der Werkzeugträger 18 vollständig vom Werkzeug 21 getrennt bzw. das Werkzeug 21 vom Werkzeugträger 18 abgelegt wurde.In order to hang up or put down the now unlocked tool 21 from the tool carrier 18, the tool carrier 18 must be released from the hooks 106. The tool carrier 18 is pivoted in such a way that an underside of the tool carrier 18 is removed from the tool 21, so that the fastening eyes 108 protruding on the tool carrier 18 in the tool receiving areas 20 ′ move out of the tool receiving areas 20 ′. After the attachment eyes 108 have been moved out, the tool carrier 18 can be moved freely from the attachment hooks 106. When the fastening eyes 108 are moved out of the tool receiving regions 20 ′, the engagement of the fastening eye 108 on the handle side with the end 100 of the first rotary lever 94 is released at the same time. The blockage of the prestressed actuating and holding means 50 caused by the fastening eye 108 on the handle when the tool 21 is in place is thus removed. As a result, the rotary lever pivots in the direction of the bolt 48 under pretension, the second rotary lever 96 pressing against the bolt 48 under pretension and triggers a pivoting movement of the bolt 48 about the longitudinal axis 92, whereupon the bolt 48 moves out of its position (paragraph 66 lies against the Profile plate 32 at the edge of the bore 88, according to Figures 5 and 11 ) is moved out. The pre-tension on the bolt 48 by the helical spring 82 now pulls the bolt 48 in the direction of the center of the tool carrier 18 until it comes to rest again with its shoulder 66, specifically on the side surface of the second rotary lever 96, as in particular in FIGS Figures 6 and 12 is shown. The bolt 48 now assumes a spring-loaded pre-locking position and is held or blocked solely by the second rotary lever 96, while the tool carrier 18 is completely off Tool 21 separated or the tool 21 was deposited from the tool carrier 18.

Der Werkzeugträger 18 ist in diesem Zustand (Riegel 48 in Vorverriegelungsstellung) zur Aufnahme eines Werkzeugs 21 vorbereitet, wobei die Aufnahme eines Werkzeugs 21 wie folgt erfolgt.The tool carrier 18 is prepared in this state (bolt 48 in the pre-locking position) for receiving a tool 21, the tool 21 being received as follows.

Das Werkzeug 21 wird zunächst mit am Werkzeug 21 ausgebildeten Anhängehaken 106 auf die Werkzeugaufnahmebereiche 20 des Werkzeugträgers 18 angehängt. Dies geschieht in der Regel durch Heranfahren des Frontladers 14 an das Werkzeug 21, wobei der Werkzeugträger 18 hydraulisch unter die Anhängehaken 106 gesteuert bzw. gefahren wird und derart vollständig an das Werkzeug 21 angelegt wird, dass die am Werkzeug 21 ausgebildeten Befestigungsaugen 108 in die Werkzeugaufnahmebereiche 20, 20' hinein ragen. Dabei wird der in den griffseitig ausgebildeten Werkzeugaufnahmebereich 20' hineinragende erste Drehhebel 94 von dem griffseitigen Befestigungsauge 108 betätigt, derart, dass der erste Drehhebel 94 vom Riegel 48 weggedrückt wird. Gleichzeitig wird dadurch auch der den Riegel 48 haltende bzw. blockierende zweite Drehhebel 96 vom Riegel 48 weg bewegt, so dass der Riegel 48 vom zweiten Drehhebel 96 frei gegeben wird und sich in Richtung zur Mitte des Werkzeugträgers 21 bewegt. Der Riegel 48 nimmt dabei automatisch, das heißt unter Vorspannung selbsttätig, seine Verriegelungsstellung ein, wobei die beiden Enden 62, 64 bzw. die Führungs- und Verriegelungsabschnitte 54, 56 des Riegels 48 mit den Befestigungsaugen 108 und Bohrungen 36, 40, 42 am Werkzeugträger 21 in Eingriff treten und das Werkzeug verriegeln (Figur 7).The tool 21 is first attached to the tool receiving areas 20 of the tool carrier 18 with the hooks 106 formed on the tool 21. This is usually done by moving the front loader 14 towards the tool 21, the tool carrier 18 being hydraulically controlled or moved under the hitch hooks 106 and being placed completely against the tool 21 in such a way that the fastening eyes 108 formed on the tool 21 enter the tool receiving areas 20, 20 'protrude into it. The first rotary lever 94 protruding into the tool receiving area 20 ′ on the handle side is actuated by the fastening eye 108 on the handle side in such a way that the first rotary lever 94 is pressed away by the bolt 48. At the same time, the second rotary lever 96 holding or blocking the bolt 48 is thereby moved away from the bolt 48, so that the bolt 48 is released by the second rotary lever 96 and moves in the direction of the center of the tool carrier 21. The bolt 48 automatically, that is automatically under pretension, assumes its locking position, the two ends 62, 64 or the guide and locking sections 54, 56 of the bolt 48 with the fastening eyes 108 and bores 36, 40, 42 on the tool carrier 21 engage and lock the tool ( Figure 7 ).

Claims (7)

  1. Tool carrier (18) for attaching and removing a tool (21) for a loader (14), with a tool carrier frame (22) and with a locking device (46) which is arranged on the tool carrier (18) and with which a tool (21) can be locked on the tool carrier (18) by a transversely movable bar (48), wherein the bar (48), with the tool (21) attached and locked, is movable from a locking position to a transversely spring-preloaded unlocking position in which the bar (48) bears on the tool carrier frame (22), wherein the locking device comprises positioning and holding means (50) which, by attachment of a tool (21) to the tool carrier (18), can be brought to a spring-preloaded position and, upon removal of the unlocked tool (21) from the tool carrier (18), release the bar (48) by means of spring force from its unlocking position bearing on the tool carrier frame (22), wherein the positioning and holding means (50) adopt a holding position and the bar (48) is movable from the unlocking position to a transversely spring-preloaded pre-locking position in which the bar (48) bears on the positioning and holding means (50), wherein the positioning and holding means (50) can be brought from the holding position to the spring-preloaded position by renewed attachment of a tool (21), and the bar (48) thus freed can be brought from the pre-locking position to the locking position by a transverse spring force, wherein the bar (48) has a grip (52) for manually moving the bar (48) from the locking position to the unlocking position, characterized in that the grip side of the bar (48) has a positioning and holding portion (58) and, oriented parallel to the latter, a first guiding and locking portion (54), wherein the bar (48), at the side opposite the grip, has a second guiding and locking portion (56), which is oriented transversely flush with the first guiding and locking portion (54).
  2. Tool carrier (18) according to Claim 1, characterized in that a spring (82) is mounted on the bar (48), by means of which spring (82) the bar (48) can be transversely pretensioned.
  3. Tool carrier (18) according to either of the preceding claims, characterized in that a shoulder (66) is formed on the bar (48), with which shoulder (66) the bar (48) bears on the tool carrier frame (22) in the unlocking position and on the positioning and holding means (50) in the pre-locking position.
  4. Tool carrier (18) according to one of the preceding claims, characterized in that the positioning and holding means (50) comprise a first rotary lever (94) and a second rotary lever (96) which are mounted for joint rotation with each other on a common rotation axle (98), wherein the first and second rotary lever (94, 96) are pivotable when a tool (21) attachable to the tool carrier (18) is brought into engagement with the first rotary lever (94), and the second rotary lever (96) can be brought into engagement with the bar (48) in order to release the bar (48) from its unlocking position bearing on the tool carrier frame (22).
  5. Tool carrier (18) according to Claim 4, characterized in that the first or second rotary lever (94, 96) is connected to a tension spring (104) connected to the tool carrier frame (22).
  6. Loader (14), in particular front loader or wheel loader, with a tool carrier (18) according to one of the preceding claims.
  7. Method for attaching and removing a tool (21) on a tool carrier (18) of a loader (14), wherein the tool carrier (18) comprises a tool carrier frame (22) and a locking device (46) which is arranged on the tool carrier (18) and with which a tool (21) is locked on the tool carrier (18) by a transversely movable bar (48), wherein the bar (48), for removal of the tool (21), is movable from a locking position to a transversely spring-preloaded unlocking position in which the bar (48) bears on the tool carrier frame (22), wherein the bar (48) has a grip (52) for manually moving the bar (48) from the locking position to the unlocking position, wherein the locking device (46) comprises positioning and holding means (50) which, upon attachment of the tool (21) to the tool carrier (18), were brought to a spring-preloaded position and, upon removal of the unlocked tool from the tool carrier, release the bar (48) by means of spring force from its unlocking position bearing the tool carrier frame (22), wherein the positioning and holding means (50) adopt a holding position and the bar (48) is movable from the unlocking position to a transversely spring-preloaded pre-locking position in which the bar (48) bears on the positioning and holding means (50), wherein the positioning and holding means (50) can be brought from the holding position to the spring-preloaded position by renewed attachment of a tool (21), and the bar (48) thus freed is brought from the pre-locking position to the locking position by a transverse spring force, wherein the grip side of the bar (48) has a positioning and holding portion (58) and, oriented parallel to the latter, a first guiding and locking portion (54), and the bar (48), at the side opposite the grip, has a second guiding and locking portion (56), which is oriented transversely flush with the first guiding and locking portion (54).
EP15177351.2A 2014-08-04 2015-07-17 Tool-carrier for depositing and picking up a tool for a loader, and method for same Active EP2982802B1 (en)

Applications Claiming Priority (1)

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DE102014215330.1A DE102014215330A1 (en) 2014-08-04 2014-08-04 Tool carrier for loading and unloading a tool for a loader, and method for loading and unloading a tool

Publications (3)

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EP2982802A2 EP2982802A2 (en) 2016-02-10
EP2982802A3 EP2982802A3 (en) 2016-04-20
EP2982802B1 true EP2982802B1 (en) 2019-12-18

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EP (1) EP2982802B1 (en)
CA (1) CA2897838C (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1026968S1 (en) 2022-11-04 2024-05-14 Deere & Company Loader carrier for implements

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DE102014215330A1 (en) 2016-02-04
US9342093B2 (en) 2016-05-17
US20160033989A1 (en) 2016-02-04
EP2982802A2 (en) 2016-02-10
CA2897838A1 (en) 2016-02-04
CA2897838C (en) 2022-09-20
EP2982802A3 (en) 2016-04-20

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