DE102016012592A1 - Agricultural tillage machine - Google Patents

Abstract

The present invention relates to an agricultural tillage machine, with at least one tillage tool, since in its working position is pivotally mounted about a horizontal pivot axis and pivoted under ground pressure against a stop limiting the pivoting. According to the invention, a locking device for locking the pivotability and fixing the tillage tool in a fixed pivot position is provided.

Description

The present invention relates to an agricultural tillage machine, with at least one tillage tool, since in its working position is pivotally mounted about a horizontal pivot axis and pivoted under ground pressure against a stop limiting the pivoting.

In agricultural tillage it may be useful to work with tillage tools that have a certain freedom in operation or remain movable overcoming frictional resistance and are ultimately held only by starting against a stop in a particular position, so that the tillage tools Moved away from the stop and can yield to a reversal of the burden. In particular, delivery tools can be stored in the manner mentioned, for example in the form of scale harrows with a certain rotational play or rotational clearance. In normal operation, the harrow are pressed from the bottom up against the stop so that the desired working depth or the desired ground contact pressure can be adjusted via the stop. If, however, the machine moves backwards without first excavating the tillage tools, the soil tillage tools can give way due to said clearance and pivot about said pivot axis, preferably lying transversely to the direction of travel, in order to prevent damage.

Such agricultural tillage machines with limited freely pivotally mounted tillage tools in the form of turnips show, for example, the writings DE 10 2008 045 635 A1 and EP 2 842 404 A1 ,

In lowered working mode said mobility is only in exceptional cases to fruition, namely when reversing without prior lifting of tillage tools, while in normal operation, the position of the tillage tools is determined by said stop. In the raised headland and / or transport position, the said pivotability of the soil tillage tools comes into play differently. In a mere lifting of the tool unit give the tillage tools themselves only a little way down until they fall against another stop that limits the freedom in the other direction. In this way, the tool unit can be lowered again at any time to resume the tillage operation in a new lane, with the tillage tools when lowering or Konstatieren the soil move back up until they reach the previously mentioned stop and thus their working position. If, on the other hand, the tool unit or lateral sections of the tool unit are folded upwards in the non-operating position in order to be able to comply, for example, with the permissible road transport width, a more or less unstable configuration of the soil tillage tools can occur, in particular if the pivot axis provided for said clearance is , which extends lying in working position, comes approximately upright. The tillage tools are then no longer pulled by gravity against said second stop, but can swing uncontrollably back and forth, especially when cornering or bumps or potholes lateral accelerations act on the tillage tools. This not only leads to noise pollution and premature wear, but can also affect transport safety. The back and forth can lead to dynamic lateral acceleration, which can affect the driving stability. On the other hand, the outer dimensions can change in the transport position, which can cause problems with tight maneuvering.

The invention is therefore an object of the invention to provide an improved agricultural tillage machine, which avoids the disadvantages of the prior art and the latter develops in an advantageous manner. In particular, the mobility of the tilling tools serving as a rear-end protection is to be maintained, without having to accept the disadvantages of mobility that arise in certain operating situations, or to make the handling of the machine cumbersome.

According to the invention, said object is achieved by an agricultural tillage machine according to claim 1. Preferred embodiments of the invention are the subject of the dependent claims.

It is therefore proposed to be able to lock the pivotable mounting of the at least one soil working tool, if the said pivoting is not required. According to the invention, a locking device for locking the pivotability and fixing the tillage tool in a fixed pivot position is provided. In particular, it can be provided that, in the lowered working position, the tilling tool continues to remain pivotable, as previously, and is held in position only by the abovementioned stop in order to continue to achieve the desired position To achieve rear protection, while the tillage tool in the excavated transport position, possibly even in the headland position can be locked to avoid the disadvantages of freedom of movement, if such freedom or mobility is not needed.

In a further development of the invention, the tillage tool can be spent in a raised transport and / or headland position in which the said pivot axis extending in the lowered working position, in particular extends transversely to the direction of travel, upright. The locking device can in this case in particular work such that the soil tillage tool is locked in its mobility around said pivot axis in the raised transport and / or headland position and released in the lowered working position.

In order to achieve a simple handling of the machine, the locking device can be formed automatically actuated by an automatic actuator. Advantageously, such an automatic actuator can actuate the locking device in its releasing configuration when the tilling tool is moved to its lowered working position, and / or conversely, move the locking device into its locking configuration when the tilling tool is in the headland - and / or transport position is excavated. Advantageously, the tillage tool can always be fixed in a specific pivot position when the tillage tool is excavated sufficiently far to prevent contact with the ground, so that then the said rear protection is no longer needed.

Optionally, a manually triggerable actuator could be provided, for example in the sense of control buttons for locking or unlocking. Preferably, however, the actuator is automatically operating depending on the position of the tillage tool between its working position and its headland and / or transport position to prevent the blockage is canceled when the tillage tool is lowered in its working position or vice versa, the blockage forget when the tillage tool is being excavated.

Advantageously, the operation can be derived from the adjusting movement of the soil working tool in the excavated transport and / or headland position or vice versa in the lowered working position, so that the actuator can be activated by the movement of the tillage tool between working and transport or headland position. The barrier device may be designed to operate automatically and enter the locking configuration when the tilling tool is dug and vice versa go into the releasing configuration when the tilling tool is lowered to the working position.

Such automatic actuation of the locking device can basically be achieved in various ways. For example, it would be possible to provide a hydraulic cylinder which picks off the excavating or lowering movement of the soil cultivation tool and actuates the blocking device in the manner of a master-slave circuit. In an alternative development of the invention, a pushbutton or sensor can detect the actuating movement of the tilling tool between working position and transport position, so that a control device can control an actuator for actuating the blocking device as a function of the probe or sensor signal.

In order to achieve a particularly simple, cost-effective design of the locking device, but in particular, a self-actuation of the locking device may be provided by weight, so that no external energy consuming actuators are needed. The said automatic actuator may be designed to operate free of external energy and to be weight-controlled. By a clever arrangement of the actuator and / or the locking device, a displacement of the center of gravity can be used, which occurs when moving the tillage tool between lowered working position and excavated transport and / or headland position to drive the locking device by means of the displaced center of gravity in the locking configuration or, conversely, into the enabling configuration.

In particular, the locking device may have a movably mounted latch, which can lock and fix the tillage tool with respect to its pivotable mounting in a form-fitting manner.

In particular, such a bolt can be gravity-controlled self-actuating in such a way that when the tillage tool is moved into the transport and / or headland position, the bolt falls into its locking position and falls into its lowered position when the soil tillage implement is moved in the lowered working position.

For example, the latch may be in the form of a pivotally mounted pawl, whose pawl pivot axis can advantageously extend transversely to the pivot axis of the soil cultivation tool and / or parallel to the lifting axis about which the soil cultivation tool can be brought into the transport and / or headland position. On the one hand, the desired blocking effect against pivoting of the tilling tool about its pivot axis can be achieved by means of a pawl pivot axis oriented in this way. On the other hand, when the tillage tool is pivoted upwards about the lifting axis, the latch can automatically fall into the locking position and / or back into the unlocked position ,

In a further development of the invention, in this case the pivoting of the pawl may be limited by two stops which drive the pawl each over a top dead center when the tillage tool dug into the transport position or vice versa is lowered into the working position. One of the stops can hereby ensure that the pawl is pushed over the top dead center when the tillage tool is dug into the headland and / or transport position. The other stop can ensure that the pawl is again driven over dead center when the tillage tool is lowered to the working position, so that the latch is automatically released again when the tillage tool is lowered.

Said movably mounted bar can in this case advantageously be movably mounted on a machine part in the said manner, which machine part moves when the tillage tool is brought into the transport position and vice versa back into the working position, so that the bar also participates in the excavation movement into the transport position and vice versa Join the lowering movement in the working position. In particular, said locking bar can be pivotally mounted on a tool carrier, to which also the soil working tools are fastened, for example in the form of coulter harrows.

On such a preferably beam-shaped tool carrier, which can extend lying transversely to the direction of travel in the working position, in particular several soil cultivation tools can be arranged side by side, in particular in a row next to one another, said tool carrier and thus in series juxtaposed soil tillage tools to the aforementioned pivot axis, which can lie in the lowered working position, preferably extend transversely to the direction of travel, can be pivoted, so that by pivoting the tool carrier all attached tillage tools can pivot together. The abovementioned stop, which determines the working position of the tillage tools when subjected to the ground pressure reaction forces, can cooperate with said tool carrier, d. H. the stop can limit a pivoting of the tool carrier under the ground pressure reaction forces, wherein said stop can be advantageously designed to be adjustable to adjust different working depths and / or ground pressure forces can.

Advantageously, the locking device engages centrally on said tool carrier in order to lock and / or release all tillage tools attached thereto at the same time. As a result, a locking device need not be provided separately for each tillage tool. Rather, the tillage tools are grouped together in terms of locking and unlocking by the locking device.

The aforesaid latch and / or cooperating latch counterpart, which engage with each other in positive engagement when the locking device is brought into its locking configuration, can advantageously be provided with a multi-element locking profile, in particular in the form of a sawtooth-like detent profile with a plurality of latching projections and / or -senken in order to fix the at least one tillage tool in different pivot positions can. In this way, it is not important that a respective tillage tool is in a "right" pivot position for locking, but the locking device can be brought into its locking configuration for various different pivot positions of the tillage tool. This is particularly advantageous when working with a gravity-controlled latch only.

The tillage tools can basically be designed differently, in particular in the form of the aforementioned harrow or other Zustreichwerkzeuge. Alternatively, however, a training of tillage tools in the form of cultivating tools or scarred discs of disc harrow into consideration. Also seeding equipment can be locked and released in a corresponding manner.

The invention will be explained in more detail below with reference to a preferred embodiment and associated drawings. In the drawings show:

1 : A schematic, perspective view of an agricultural tillage machine in the form of a drill with the Ausbringelementen downstream tillage tools in the form of coulters, which are arranged in a row transverse to the direction of travel, wherein lateral portions of the Scharstriegelreihe to a lying, pointing in the direction of travel Aushebeachse in a transport position are hinged on top, without this being shown specifically,

2 Figure 1 is a fragmentary perspective view of a tilling implement in the form of a harrow and the associated locking device for locking the pivoting mobility of the harrow, the locking device being shown in its unlocked position when the tilling tool is in the lowered working position.

3 : A fragmentary perspective view of the Scharstriegel whose pivotal mounting with a pivoting limiting stop and the associated locking device for locking the pivoting in the form of a pivotally mounted latch with sawtooth from another direction, wherein also the locking device is shown in its unlocked position,

4 a fragmentary, perspective view of the locking device, which is shown in its locked position with upwardly tilted in the transport position Scharstriegeln,

5 a fragmentary, perspective view of the locking device in its locked position from a different perspective than 4 , and

6 : A perspective view of the two tillage tool assemblies in the lowered working position with unlocked locking devices.

As 1 shows, can the agricultural tillage machine 1 be designed in the form of a drill, which is a machine frame 2 comprising a seed hopper 3 carries out of the over seed lines 4 seed can be deposited in the soil in a manner known per se. In the illustrated embodiment is the machine frame 2 over a drawbar 5 attachable to a tractor, not shown.

The machine frame 2 carries in the illustrated embodiment various tillage tools. For example, leading tools are in the front area 6 provided in the form of a Spatenrollegge, which a packer roller 7 trailing in the form of a variety of packer wheels. Behind the packer roller 7 are each arranged in rows side by side coulters 8th , Ground pressure wheels 9 and a coulter harrow unit 10 provided on a frame part 2a are hinged or suspended.

As 2 shows, in this case comprises said coulter harrow unit 10 as tillage tools 12 a plurality of preferably tine-shaped share harrow or harrow elements 11 , which according to the illustrated embodiment may each consist of a slightly curved harrow tines, which is connected at its upper end via a spring spiral with a mounting portion through which the harrow tines on a tool carrier 23 stored, for example, can be rigidly. Alternatively, the coulters could, however, each have two slightly curved, respectively rod-shaped prongs, which are connected to each other in a manner known per se at the upper end by a common connecting bracket, which in a corresponding or other way on the tool carrier 23 can be attached.

On the named tool carrier 23 that can be formed beam-shaped vorzeugsweise and lying horizontally extending transversely to the direction of travel, side by side, the several harrow elements 11 be lined up.

The named tool carrier 23 and thus the harrow elements attached thereto 11 are in the in 1 drawn, lowered working position about a lying, transverse to the direction extending pivot axis 13 pivotally mounted, said pivoting by a stop 14 is limited, the bar-shaped tool carrier 23 and thus the harrow elements 11 in a defined working position. Because the coop harvester 11 Stand up in the working position on the ground, the reaction forces push the harrow upwards, creating the bar-shaped tool carrier 23 around the pivot axis 13 pivots and to the aforementioned stop 14 moves.

As the 2 and 3 show, the bar-shaped tool carrier 23 this via one or more handlebars 24 around the pivot axis 13 swiveling on one or more coulter holders 13 be articulated. The named stop 14 can advantageously be designed to be adjustable in order to adjust different height and / or pivot positions of the Scharstriegel as working positions, the adjustability of the stop 14 for example, by the in the 2 and 3 hole pattern shown can be realized with a displaceable Absteckbolzen.

The coop harvester 25 who said the harrow elements 11 behind the coulters 8th or the Bodenandruckrollen 9 holds, in the illustrated embodiment, while a Striegeltragarm in the form of a leaf spring-type band steel strap, which - roughly speaking - lying from its pivot point at the front end to the rear on the Bodenandruckrolle 9 extends and at its rear end the tool carrier 23 and thus the tillage tools 12 in the form of harrow elements 11 wearing. In the illustrated embodiment is said Striegeltragarm 14 slightly curved, so that its rear portion extends slightly obliquely downwards, cf. 3 ,

The named tool carrier 23 can be divided into several sections, in particular, have left and right side panels, each about a lying, pointing in the direction of travel lifting axis 19 can be hinged to a central part of the machine frame to the lateral portions of the bar-shaped tool carrier 23 and the coop attached to it 11 to be able to fold up in a headland and / or transport position, for example, to comply with the predetermined maximum road width for road transport. In particular, the lateral portions of said beam-shaped tool carrier 23 be spent in an approximately upright, especially about vertical transport position, in which the aforementioned pivot axis 13 also stands upright.

The said lifting in the headland and / or transport position can be done for example by means not shown lifting actuators, for example in the form of hydraulic cylinders.

In the excavated transport position, the pivoting of the crowd harrow 11 about said pivot axis 13 through a locking device 15 be locked so that the harrow 11 are fixed in a frozen pivot position. The said locking device 15 can this advantageously an automatic actuator 16 comprising the locking device 15 when moving the share harrow 11 automatically locked in the transport position and reversed automatically when lowering into the working position. The named actuator 16 can advantageously work without external energy and be controlled by gravity.

In particular, the locking device 15 in the 2 - 5 shown bolt 17 comprise, which in the manner of a pawl about a pawl pivot axis 18 pivotable on the tool carrier 23 or an associated attachment can be stored. The mentioned pawl pivot axis 18 can advantageously parallel to the lifting axis 19 and / or transverse to the pivot axis 13 the coop harvester 11 extend.

Advantageously, said bar can 17 doing two attacks 20 and 21 be associated with the pivotability about the pawl pivot axis 18 limit, and advantageously such that the bolt 17 when lifting the coop harvester 11 in the transport position and vice versa back when lowering into the working position of one of the aforementioned attacks 20 and 21 is pushed over a top dead center, so that the bolt 17 then fall into its other end position.

The arrangement of the bolt 17 and its pawl pivot axis 18 can be made such that the pawl pivot axis 18 below the center of gravity of the bolt 17 is arranged or the bolt center of gravity when spending in the excavated transport position or vice versa in the lowered working position on the pawl pivot axis 18 is carried away. As the figures show, said pawl pivot axis 18 at a lower end portion of the bolt 17 be arranged, with the stops 20 and 21 prevent the latch 17 shuttles in a down-facing position. The attacks 20 and 21 define a swing angle window within which the latch 17 can pivot, said pivoting window in its absolute position in space undergoes a change when the coulter 11 dug into the transport position or lowered in the opposite direction to the working position.

The said bar 17 acts with a bar counterpart 22 together, on a machine frame fixed component, in particular the aforementioned share harrow holder 25 can be appropriate. The said counterpart bar 22 For example, a rigid to the coop harvester 25 be attached locking bracket to which the bolt 17 can lock.

In order to assume different locking positions, regardless of which pivot position the tool carrier 23 when swung up, the latch can 17 a sawtooth profile-like locking profile 27 or locking profile with a plurality of locking projections and / or sinks, so that the bolt 17 with different sections on the counterpart bar 26 can engage. In kinematic reversal, it would also be conceivable, said counterpart bar 26 to provide with a corresponding, preferably sawtooth-like locking profile with a plurality of locking projections and lower, in which case the bolt 17 a simple profile may be sufficient, however, however, said sawtooth profile may be provided.

The said locking device 15 has been above in connection with the tillage tools 12 in the form of the share harrow 11 explained. It is understood that a corresponding locking device 15 also for differently shaped tillage tools that are hung or stored in a similar manner, may be provided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008045635 A1 [0003]
• EP 2842404 A1 [0003]

Claims (12)

Agricultural tillage machine, with at least one tillage tool ( 12 ), which in its working position about a horizontal pivot axis ( 13 ) is pivotally mounted and under ground pressure against a pivoting limiting stop ( 14 ) is pivoted, characterized in that a locking device ( 15 ) for locking the pivotability and fixing the tillage tool ( 12 ) is provided in a fixed pivot position. Agricultural tillage machine according to the preceding claim, wherein the tillage tool ( 12 ) can be brought into a raised transport and / or headland position, in which said pivot axis ( 13 ) is upright, wherein the locking device ( 15 ) in the transport and / or headland position locking and releasing in the working position is formed. Agricultural tillage machine according to one of the preceding claims, wherein an automatic actuator ( 16 ) for actuating the locking device ( 15 ) in the releasing position when moving the tillage tool ( 12 ) in its working position and operating the locking device ( 15 ) into the blocking position when the tillage tool ( 12 ) is provided in its transport and / or headland position. Agricultural tillage machine according to the preceding claim, wherein the actuator ( 16 ) depending on the position of the tillage tool ( 12 ) working between its working and transport and / or headland position and by the movement of the tillage tool ( 12 ) between the working position and transport and / or headland position is activated. Agricultural tillage machine according to one of the two preceding claims, wherein the automatic actuator ( 16 ) trained foreign energy and weight-controlled. Agricultural tillage machine according to one of the preceding claims, wherein the locking device ( 15 ) a movably mounted bar ( 17 ) for positive locking of the tillage tool ( 12 ) having. Agricultural tillage machine according to the preceding claim, wherein the bolt ( 17 Gravity-controlled self-actuating is designed such that the bolt ( 17 ) when moving the tillage tool ( 12 ) in its transport and / or headland position falls into its locking position and when moving the tillage tool ( 12 ) in its working position falls into its unlocking position. Agricultural tillage machine according to one of the two preceding claims, wherein the bolt ( 17 ) is designed as a pivotally mounted pawl whose pawl pivot axis ( 18 ) transverse to the pivot axis ( 13 ) of the tillage tool ( 12 ) and / or at least approximately parallel to the lifting axis ( 19 ) to the the tillage tool ( 12 ) can be brought into the transport and / or headland position, is arranged. Agricultural tillage machine according to the preceding claim, wherein the pivotability of the pawl by two stops ( 20 . 21 ), which are arranged such that one of the stops ( 20 ) the latch when moving the tillage tool ( 12 ) drives in the excavated transport and / or headland position above a top dead center and the other of the two stops ( 21 ) the latch when moving the tillage tool ( 12 ) in the lowered working position on the said dead point expels. Agricultural tillage machine according to one of the preceding claims, wherein the bolt ( 17 ) and / or a cooperating bolt counterpart ( 22 ) has a sawtooth-like locking profile with a plurality of locking projections and / or sinks for locking in a plurality of positions. Agricultural tillage machine according to one of the preceding claims, wherein a number of juxtaposed tillage tools ( 12 ) are provided, which on a common, preferably bar-shaped tool carrier ( 23 ) are mounted, which is about said pivot axis located in working position ( 13 ) pivotally mounted and under ground pressure against said stop ( 14 ) is printable, wherein the locking device ( 15 ) centrally the said tool carrier ( 23 ) and thus all tillage tools ( 12 ) simultaneously locks and unlocks. An agricultural tillage machine according to the preceding claim, wherein the tillage tools ( 12 ) as share harrow ( 11 ) are formed on the said tool carrier ( 23 ) are attached.

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