WO1998047344A2

WO1998047344A2 - Tool bar for machines for working and treating soil

Info

Publication number: WO1998047344A2
Application number: PCT/DE1998/001099
Authority: WO
Inventors: Michael Horsch
Original assignee: Horsch Maschinen Gmbh
Priority date: 1997-04-22
Filing date: 1998-04-21
Publication date: 1998-10-29
Also published as: DE19716801A1; WO1998047344A3

Abstract

The invention relates to a tool bar, for machines for working and treating soil which have a large total working width. The inventive tool bar has extension bars (9, 10) attached to both sides of a middle bar (1) in such a way that they are able to pivot, hinged supports (17, 18) being outwardly connected to said extension bars. During road travel, the hinged supports (17, 18) fold up 180° onto the extension supports and extension bars with hinged supports are moved 90° into the vertical position, so that the tool elements of the extension bars (9, 10) extend outwards horizontally, the tool elements of the hinged supports (17, 18) run inwards horizontally on top of each other and the outwardly extending tool elements finish level with the two ends of the middle support (1). In order to lift out the tool bar, the support arms for the running wheel are actuated by means of drive cylinders, said support arms being fixed rigidly to a torsion bar. The torsion bar is turned and this turning motion is translated into a longitudinal movement of a push rod, said push rod then rotating the drawbar and the upper connecting rod.

Description

Tool carriers for tillage and soil treatment machines

The invention relates to a device according to the preamble of claim 1, in particular a tool carrier, which can preferably be used for tillage and sowing machines.

With the increasing size of the agricultural areas to be cultivated, the need to use machines with ever larger working widths increases. This applies to both tillage equipment, e.g. Cultivators, harrows and the like as well as for soil treatment devices such as Spraying devices, sowing devices and the like. In the course of this development, processing widths of approx. 12 m and above are aimed for. In order to be able to move such oversized machines on roads, the maximum road travel width must not exceed 3 m and the maximum road ride height approx. 4 m.

The object of the invention is therefore to propose tool carriers for such machines which on the one hand have a total working width of the order of magnitude of 12 m and which can be folded or collapsed for road travel to a maximum width of 3 m and a maximum height of 4 m. Furthermore, it is an object of the invention to raise the tool carrier with the tools approximately parallel to the floor and thus to bring the tools out of engagement with the floor.

According to the invention, this object is achieved in that the two extension beams pivotally attached to the central beam are articulated at a distance from the ends of the central beam, the tools of the extension beam in the swung-up, vertical state (road travel) are flush with the outer limit of the central beam, the tools are directed horizontally outwards, and the extension beams at the outer end each have a pivot point for receiving a Have folding carrier, which can be folded 180 ° into the driving position relative to the extension beams, and the tools are directed towards each other inwards. Further features of the invention are the subject of the dependent claims.

In a preferred embodiment, the tool carrier according to the invention has a one-piece horizontal center carrier of approximately 3 m in width, to which downwardly extending tool elements with a height of approximately 600 mm, for example, are attached (coulters, cultivator elements or the like). The outer ends of the center carrier determine the overall width of the tool carrier in the direction of travel. An extension bracket is articulated on the center bracket, at a distance from the two end areas, and can be pivoted 90 ° from the vertical road position into the horizontal working position. The length of these extension beams is approx. 2 ₇ -3 m, and the articulation point of these extension beams on the horizontal central beam is arranged approximately 0.6 m inwards from the outer boundary of the central beam ends. At the outer end of the extension bracket, a folding bracket is articulated, which can be swiveled through 180 °, i.e. in the driving position runs parallel to the respective extension bracket in a vertical position and has a length of approx. When driving on the road and when folded, the tools of the extension bracket assume a horizontal position and are directed outwards, while the tool elements of the folding bracket assume a horizontal position and are directed towards each other inwards, so that the tools of the two folding brackets are directly opposite one another.

It is crucial for an optimal solution that the extension beams articulated on the central beam are mounted at an optimal location within the central beam in order to achieve a particularly favorable use of space. So that a maximum width of 3.0 m for road travel can be maintained, the extension part is articulated at a distance of approx. 0.6 m from the outer edge of the central girder, so that when folded up, the outer limit of the factory witness of the extension beam is within the approved width for road travel and overall an optimized coordination of the individual beams with the tools can be achieved.

In a special embodiment of the invention, the machine is a four-row machine which has a front row of tines (in the direction of travel) and a rear row of tines (or row of tool elements). Between the second and the third row of tool elements there is a greater distance than between the first and second as well as the third and fourth row, so that the depth guiding devices and the transport wheels can be accommodated particularly expediently, the distance between the tool elements of the second and the third row of tool elements corresponds at least to the wheel diameter of the transport wheels and in this way sufficient clearance for the depth guides and the transport wheels is achieved when lowering the tool carrier for the soil treatment.

The tool elements of the rows of tool elements arranged one behind the other in the direction of travel are offset from one another in the direction of travel. It is particularly expedient to provide a tool element in the longitudinal center axis of the tool carrier and to arrange the other tool elements of the different rows of tool elements on both sides of the central longitudinal axis symmetrically to the left and right.

In a further embodiment of the invention, a push rod arrangement is provided in the central longitudinal axis, with which the tool carrier frame is lifted up in parallel over the drawbar and the upper links. The tool carrier is lifted out or raised in parallel with the aid of working cylinders which act on carrier arms which receive the tandem impellers and which are firmly connected to a torsion tube which extends over the entire width of the machine. The torsion tube is rotated by actuating the working cylinders. A flange is rigid on the torsion tube attached, via which the extent of the rotational movement of the torsion tube is transferred into a corresponding longitudinal movement of the push rod, which shifts the drawbar of the tool holder. This sliding movement is transmitted to the upper link, which carries out a pivoting movement in order to counteract a tilting of the frame of the tool carrier and to enable the frame of the tool carrier to be lifted in parallel.

The invention is explained below in connection with the drawing using an exemplary embodiment in the form of a flat cultivator. It shows:

1 is a schematic representation of the tool carrier according to the invention in the working position,

2 shows the arrangement according to FIG. 1 in the folded-up driving position,

Fig. 3 is a plan view of the tool carrier, and

Figures 4a and 4b each a side view of the frame lifting device with a push rod and wheels for the central part and a side wing of the tool carrier arrangement.

The tool carrier frame consists of a center carrier 1 with outer ends 2 and 3, which receives tool elements 4, 5, 6 with corresponding tool holders, and two extension carriers 9, 10 pivotably mounted in the center carrier 1 at 7 and 8 with tool elements 1 1, 12, 13, 14 The bearing points of the extension beams 9, 10 are spaced apart towards one another from the outer ends 2, 3. The extension brackets 9 and 10 each receive a folding bracket 17, 18, which carries inwardly directed tool elements 19, 20 and 21, 22, respectively, via swivel bearings 15 and 16 arranged at the outer end.

The distance by which the bearing point 7, 8 is moved inwards from the outer end 2, 3 of the central carrier 1 corresponds to the distance that the tool elements 4, 5, 6 are from Extend center support 1 downwards, in the practice of the exemplary embodiment 0.6 cm (illustration according to FIG. 2), so that in the folded state the outwardly directed tool elements are flush with the ends 2, 3 of the middle part.

The extension supports 9, 10 are folded up from the working position according to FIG. 1 into the folded-in position (driving position) according to FIG. 2 by 90 ° after the folding supports 1 7, 18 via pivot bearings 15, 16 through 180 ° against the extension supports 9, 10 have been folded so that the folding carrier and the extension carrier connect to each other and the tool elements 1 1, 12, 13, 14 are horizontally outwards, while the tool elements 19, 20, 21, 22 run horizontally inwards towards each other and the free tool ends face each other immediately.

Fig. 3 shows a plan view of the tool holder with frame in the working position, the wheels being shown as tandem wheel pairs 23. The two individual wheels 23 ', 23 "of each pair of wheels 23 are preferably arranged axially offset from one another in the longitudinal direction, such that the wheel 23' leads in relation to the wheel 23", which results in a smoother running of the entire tool carrier system. The tool elements, which are generally marked W in FIG. 3, are arranged in four rows R1-R4. The tool elements W of the row R1 are fastened to the cross member 24, the elements of the row R2 with the cross member 25, the elements of the row R3 with the longitudinal intermediate members 26, and the elements of the row R4 with the cross member 27. The distance between the rows R2 and R3 is chosen to be substantially larger than between the rows R1 and R2, or R3 and R4, in order to achieve sufficient space for accommodating the impellers 23 and the depth guide.

FIGS. 4a and 4b show the process of lifting out the tool carrier, a push rod 28 being arranged in the central longitudinal axis of the tool carrier and being longitudinally displaceable by actuating drive cylinders 29 in such a way that Se longitudinal movement is converted into a displacement of the drawbar 30 and a pivoting movement of the upper link 31 of the tool carrier 1.

The drive cylinder 29 is coupled to the support arm 32 of the tandem impeller 23, which is rigidly attached to a torsion tube 33 running across the tool holder 1 and is pivoted when the drive cylinder 29 is actuated. This pivoting movement is transmitted to the torsion tube 33, with which a flange 34 is rigidly attached, which receives the push rod 28. The rotational movement of the torsion tube 33 is converted into a longitudinal movement of the push rod 28, and this longitudinal movement is converted into a pivoting movement of the upper link 31 via the drawbar 30. 35 denotes a spring-loaded stone safety device, 36 a tool element holder. The angle α indicates the movement of the lifting of the tandem wheel 23 achieved by the actuation of the drive cylinder 29, the wheel 23 being shown lowered for illustrative reasons, but in reality the tool carrier 1 is raised.

Claims

claims

1. Tool carrier for tillage and soil treatment machines with a frame with a total working width of approx. 12 m, which can be changed for road travel to a width of up to 3 m and a height of approx. 4 m, the frame consisting of a rigid, horizontal base section of road travel width and extension beams pivotally attached thereto, characterized in that a) the two extension beams (9, 10) pivotably (at 7, 8) on the center beam (1) at a distance from the ends (2, 3) of the center beam (1 ) are hinged to the latter, b) the tools (1 1, 12) of the extension bracket (9, 10) in the swung-up, vertical state (road travel) are flush with the outer limit (2, 3) of the center bracket, with the tools horizontally outwards are directed, and c) the extension supports (9, 10) each have a pivot point (15, 16) for receiving a folding support (17, 18) at the outer end, de r can be folded into the travel position by 180 ° relative to the extension beams (9, 10), and the tools (19, 20, 21, 22) are directed towards each other inwards.

2. Tool carrier according to claim 1, characterized in that the distance between the articulations (7, 8) in the central carrier (1) from the outer ends (2, 3) of the central carrier (1) substantially the height of the tools (4, 5, 6 ) with tool holder.

3. Tool carrier according to claim 1 or 2, characterized in that the tool carrier (1, 9, 10, 17, 18) in the direction of travel of the machine is symmetrical to the central longitudinal axis (I), and that a tool (4) in the central longitudinal axis and the other tools (5, 6, ...) are arranged on the left and right of the central longitudinal axis at the same distance from each other.

4. Tool carrier according to one of claims 1-3, characterized in that in a four-row arrangement (R1, R2, R3, R4) of the tools (4, 5, 6, 1 1, 12, 13, 14, ...) in the direction of travel one behind the other the two front rows (R1, R2) and the two rear rows (R3, R4) have a much smaller distance than the second and third rows (R2, R3) from each other, and that this larger distance for the recording a depth guide and transport wheels (23) is determined.

5. Tool carrier according to one of claims 1-4, characterized in that the transport wheels (23) are designed as tandem wheel assemblies.

6. Tool carrier according to claim 5, characterized in that the individual wheels (23 ', 23 ") of the tandem wheel assemblies (23) are arranged offset to one another in the direction of travel.

7. Tool carrier according to one of claims 1-6, characterized in that between the front frame carrier (24) or drawbar (30) and rear frame carrier (27) a push rod (28) is arranged in the center axis (II), with the help of which a parallel lifting of the frame and a simultaneous movement of the drawbar is achieved.

8. Tool carrier according to claim 7, characterized in that the push rod (28) with a transverse to the machine frame attached Torsion tube (33) is coupled to which the support arms (32) for the transport wheels (23) are firmly connected, that these support arms are connected via working cylinders (29) for lifting the tool holder, and that by rotating the torsion tube (33) Push rod (28) longitudinally displaced and the drawbar (30) and the upper link (31) connected to it can be pivoted via this displacement movement.

9. Tool carrier according to claim 7 or 8, characterized in that the torsion tube (33) has a lever arm (34) which is rigidly connected to the rear end of the push rod (28) on the torsion tube (33), and which by the Rotation of the torsion tube (33) changes the angle of rotation (oc) into a linear movement of the push rod (28).

10. Tool carrier according to claim 9, characterized in that the front end of the push rod (28) is connected to the drawbar (30) so that the linear longitudinal movement of the push rod rotates the pivot point of the drawbar (30) and this rotates the upper link ( 31) around the tiller pivot point in a raised or lowered position.