Soil cultivation equipment

Abstract

Soil cultivation device, in particular a compact disc harrow and / or cultivator-disc harrow combination for the most comprehensive soil cultivation possible, comprising a first and a second support beam which are fastened to a frame and extend transversely to the direction of travel of the machine and are arranged at a distance one behind the other, wherein each support beam is provided with a plurality of arms, at the free end of which, facing the ground, at least one rotatably mounted disc is arranged, wherein the first and the second support beam are each pivotable and / or rotatable about their longitudinal axes at least to a limited extent, wherein the pivoting and / or rotation of the first and second support beams is adjustable by means suitable for adjustment, and at least one coupling element is arranged between the first and second support beams,wherein the coupling element and the means for pivoting and / or rotating the support beams (4) are each combined to form a component (9), wherein the component (9) consists of a central part which is rotatably fixed and / or displaceable on the frame (1), characterized in that the component (9) also consists of at least one adjusting part which is arranged displaceably relative to the central part or to the frame (1) in the direction of travel (2) and which is fastened to the first and / or second support beam (4).

Description

The invention relates to a soil working device according to the preamble of claim 1.Such a floor treatment device is described in DE 603 19 573 T2.A further soil-working device is described in DE 100 66 183 B4. This floor treatment device, which is designed as a disk harrow, has a central frame. On the frame, facing forwards in the direction of travel, a drawbar is provided for connecting an agricultural tractor. The drawbar thus extends in the direction of travel. Two support beams are arranged on the frame transversely to the direction of travel. These support beams are adapted to receive a plurality of arms. The arms are each fastened to the carrier beam by means of a rubber mounting and at their free end pointing towards the floor a rotatably mounted disc is fastened. Behind the carrier beams in the direction of travel, a follower roller is arranged on the frame such that it can be pivoted.To adapt the working forces acting on the arms or the carrier beams, an adjusting device is provided for varying the relative height setting of the disc arms fastened to one of the two carrier beams. This adjusting device is designed as an adjusting spindle and is arranged between the frame and the support beam which is at the front in the direction of travel. Because the adjusting spindle is fixed on the frame in its longitudinal direction on the one hand and is connected to the carrier beam via an adjusting lever on the other hand, the change in length of the same caused by rotation of the spindle leads to a pivoting movement of the front carrier beam about its longitudinal axis. In order to transmit this pivoting movement to the rear carrier beam in the direction of travel, a coupling element is provided. The coupling element, which is designed as a flat iron, is arranged at the same height between the first and second carrier beams and is firmly connected to these beams. The pivoting movement of the first carrier beam is thus transmitted directly to the second carrier beam.This arrangement has the disadvantage that the adjusting device provided for adjusting the height of the arms is formed in multiple parts with the interacting coupling element and therefore consists of separate parts. This is particularly disadvantageous because a plurality of arrangements are provided on the floor treatment device and the component circumference increases in a correspondingly increased manner.DE 20 2004 001 397 U1 discloses a further floor processing device designed as a disc harrow, wherein the carrier beams are mounted freely transversely to the direction of travel, wherein the freedom is limited by stops in both directions. In this soil-working appliance, the carrier beams cannot be pivoted about their longitudinal axis.The invention is based on the object of creating a simplified arrangement for adjusting and coupling the carrier beams.This object is achieved according to the invention by the features of claim 1. It is provided that the coupling element and the means for pivoting and / or rotating the carrier beams are each combined to form a component, and that the component is each composed of a central part rotatably fixed and / or displaceable on the frame and at least one adjusting part arranged displaceably with respect to the central part or the frame in the direction of travel and fastened on the first and / or second carrier beam.As a result of this measure, the coupling element is integrated into the adjusting means and the extent of the components necessary for coupling and adjusting the carrier beams is limited to a minimum number. Thus, the previous individual components of the adjusting device are combined to form a single component and a lightweight construction with direct translation of the adjusting movements is achieved. The front and the rear carrier beams are connected in a simple manner and the axial securing of the central part prevents an undesired pivoting and / or rotation of the carrier beams.In a first embodiment of the invention, the combined component for coupling and pivoting and / or twisting the carrier beams is designed as a central part which is designed as a spindle nut extended in the longitudinal direction, in which two adjusting parts which are designed as threaded rods shaped in the same direction engage. The two threaded rods in the same direction each have in this embodiment either the same or different pitch(s). It is advantageous here that the adjustment of the pivoting and / or rotation of the carrier beams is thus designed quasi continuously and synchronously by means of a single component. Advantageously, by the modification of providing the threaded rods with different pitches, the inclination adjustment of the more heavily loaded row of discs mounted on the front carrier beam can be adapted.In a further embodiment, the combined component for coupling and pivoting and / or twisting the carrier beams is designed as a central part which is designed as a sleeve with an external thread in the region of the attachment to the frame, in which two adjusting parts are rotatably mounted. It is advantageous here that the design of the adjusting parts is further simplified.In a third advantageous embodiment, the combined component for coupling and pivoting and / or twisting the carrier beams is designed as a synchronous cylinder, the cylinder body of which forms the central part and the piston rods of which each form an adjusting part. It is particularly advantageous here that the circumference of the components is limited to standard parts here, except for the connection to the frame. This ensures reliable functioning and simple construction. The synchronous cylinder is conceivable in this embodiment both as a pneumatic and as a hydraulic cylinder.In an expedient development of the invention, the combined component is remotely operated for coupling and pivoting and / or rotation of the carrier beams. This ensures that the adjustment can be carried out in a pleasant manner for the user from the driver's cab.Further details of the invention can be found in the exemplary description and the drawings. The drawings show FIG. 1 shows a perspective view of a short disk harrow, FIG. 2 shows short disk harrow in the working position with different working depths in embodiment A in side view, FIG. 3 shows a sectional view of the combined component according to FIG. 2, FIG. 4 shows a detailed view of the combined component according to FIG. 3, FIG. 5 shows a sectional view of the combined component in embodiment B, FIG. 6 shows a detailed view of the combined component according to FIG. 5, FIG. 7 shows a sectional view of the combined component in embodiment C, FIG. 8 shows a detailed view of the combined component according to FIG. 7.As FIG. 1 shows, the short-disk harrow has a multi-part frame 1. In a manner not shown, the frame 1 can be provided with a drawbar or three-point coupling device, wherein the drawbar or three-point coupling device serves to connect the short-plate harrow to an agricultural tractor, which is likewise not shown. The short-pulley bow can thus be pulled and moves behind the tractor in the direction of travel 2.Bolt receptacles 3 are provided on the rear part of the frame 1 in order to connect the short-disk harrow to a further, likewise not illustrated, rubber unit. Two carrier beams 4 are located in front of the bolt receptacles 3 in the direction of travel 2, and the carrier beams 4 extend transversely to the direction of travel 2 and are arranged spaced apart one behind the other. Each of the two support beams 4 is provided with a plurality of arms 5, which are suspended on the support beam 4 by means of a rubber suspension 7. On each arm 5 there is arranged at its free end pointing towards the ground a rotatably mounted disc 6. Depending on the inclination N1-N4 that is set, the slices 6 engage more or less deeply into the soil and culture it as extensively as possible.In the present embodiment, the carrier beams 4 are arranged on the frame 1 in an adjustable manner, at least in a limited manner, such that they can be pivoted or rotated, and are coupled to one another. By pivoting the support beams 4, the inclination N1-N4 of the disc-carrying arms 5 can be adjusted, as shown in FIG. 2. A chassis, not shown, is located at a defined distance S 1 from the longitudinal axis of the carrier beams 4 in the direction of the ground 8. During operation, the short-disk harrow rolls over the chassis on the ground 8, so that, with a large inclination N 1, N 3 of the arms 5 and at least approximately constant distance S 1, the disks 6 operate at a large working depth T 1.By pivoting the support beams 4, the inclination N1, N3 of the disc-carrying arms 5 can be adjusted to a smaller inclination N2, N4, so that the discs 6 operate at a small working depth T2, as shown by the dashed lines in FIG. 2. The pivoting of the carrier beams 4 and thus the setting of the inclination N1-N4or of the working depth T1, T2is carried out with the aid of the component 9, which serves for the adjustment of the panes 6 and at the same time as a coupling element between the two carrier beams 4.In principle, the component 9 comprises a central part rotatably fixed and / or displaceable on the frame 1 and at least one adjusting part arranged displaceably with respect to the central part or with respect to the frame 1 in the direction of travel 2 and fastened to the first and / or second carrier beam 4.In an embodiment A of the component 9, as shown in FIGS. 3, 4, the central part of the component 9 is formed by a spindle nut 10 aexpanded in the longitudinal direction of the component 9. This spindle nut 10a is provided with an internal thread and is rotatably fixed to the frame 1 in the axial direction by means of a holder 11. In embodiment A, two adjusting parts engage in the spindle nut 10 a, which are designed as threaded rods 12 aformed in the same direction. The threaded rods 12a are rigidly coupled to the support beams 4 at the front and at the rear in the same way by means of bolts 14 via an adjusting lever 13.If the spindle nut 10 ais rotated by the user in embodiment A, depending on the direction of rotation, an axial displacement of the threaded rods 12 aengaged in the spindle nut 10 avia threads in the same direction toward the front or the rear in the direction of travel 2 results. The spindle nut 10 ais fixed on the frame in the axial direction and therefore experiences only the rotation and no displacement. This operation is indicated by the dotted lines and arrows 15 in FIG. 2. Due to the above-described arrangement of the threaded rods 12 aon the carrier beam 4, the axial displacement of the threaded rods 12 aresults in the pivoting movement of the carrier beams 4 and thus in an adjustment of the inclination N 1-N 4 or of the working depth T 1, T 2. Thus, the component 9 according to the invention creates a means for pivoting and / or rotating the carrier beams 4 and at the same time a coupling element between the carrier beams 4.If the threaded rods 12 aare provided with threads of the same direction and with the same thread pitch, it results that the carrier beams 4 are rotated by the same amount and thus the inclination N 1 is always equal to N 3 and N 2 is always equal to N 4. If the threaded rods 12a are provided with threads of the same direction and with unequal pitch, it follows that the ratio of the slopes N1, N2, N3, N4 can be changed. Thus, an embodiment which is not shown would be conceivable in which N1 is equal to N3 and N2 is less than N4, in that the threaded rod 12a which is at the front in the direction of travel 2 is provided with a greater pitch than the threaded rod 12a which is at the rear. By rotating the spindle nut 10 a, the front threaded rod 12 awith a large pitch thus experiences a greater axial displacement than the rear threaded rod 12 awith a small pitch.In a further embodiment B, as shown in FIGS. 5, 6, the central part of the component 9 is formed by a sleeve 10 b, which is provided with an external thread in the region of the attachment to the frame 1. In this embodiment, the axial securing of the middle part to the frame 1 is dispensed with, so that the sleeve 10 bis held in position or is displaceable by its thread. In this embodiment B, the holder 11 is designed as a threaded holder 11 bcorresponding to the sleeve 10 b. The adjusting parts are fastened to the carrier beams 4 in the same manner as in embodiment A and are designed as connecting pieces 12 b. The connecting pieces 12b are rotatably mounted in the sleeve 10b and fixed in the axial direction.By rotating the sleeve 10b, an axial displacement thereof relative to the threaded holder 11b results. By securing the threaded holder 11 bto the frame 1 and by the connecting pieces 12 bfixedly coupling the sleeve 10 band the carrier beams 4 in the axial direction, an analogous adjustment of the inclination N 1-N 4 results due to the pivoting of the carrier beams 4, as in embodiment A.In order to facilitate the operation of the device described above, it is conceivable that the respective embodiments A and B are provided with actuators, not shown, which are suitable for the remote adjustment of the combined component 9 for the coupling and pivoting and / or rotation of the carrier beams 4. In particular, the actuators are configured such that they can be remotely operated from the driver's cab of the agricultural tractor, not shown.A further embodiment C is shown in FIGS. 7, 8, wherein the combined component 9 for coupling and pivoting and / or twisting the carrier beams 4 is designed as a hydraulic or pneumatic synchronous cylinder 9 c. The central part is formed by the cylinder body 10c. This is fixed to the frame 1 in the axial direction via the holder 11. The two adjusting means are formed by the piston rods 12c of the synchronous cylinder 9c. The piston rods 12 care each, as is known from embodiment A, coupled by means of bolts 14 via the respective adjusting levers 13 to the carrier beams 4.In a technically conventional manner, the piston rods 12 cmay be moved in the axial direction in the cylinder body 10 c. Because the cylinder body 10 cis fixed to the frame 1 in the axial direction with the aid of the holder 11 and the piston rods 12 care coupled to the carrier beams 4 by the above-described arrangement, the displacement path of the piston rods 12 cthus results in the pivoting movement of the carrier beams 4 necessary for adjusting the inclination N 1-N 4. Both hydraulic cylinders and pneumatic cylinders are suitable for performing the function thus configured. These are connected via the hoses indicated in FIG. 7 to the hydraulic or pneumatic installation of the agricultural tractor and can thus be remotely operated via the operation of the tractor.List of reference characters1 Frame 2 Direction of travel 3 Bolt receptacles 4 Carrier beam 5 Arm 6 Disk 7 Rubber suspension N 1-N 4 Inclination 8 Ground S 1 Distance T 1, T 2 Working depth 9 Component 9 c Gleichlauf cylinder 10 a Spindelmutter nut 10 b Hülse 10 c Cylinder body 11 Holder 11 bThread holder 12 a Gewindestange rod 12 bConnect piece 12 c Kolbenstange rod 13 Adjusting lever 14 Bolts

Claims

Soil cultivation device, in particular short disc harrow and / or rubber disc harrow combination for soil cultivation covering as much as possible, having a first and a second carrier beam which are fastened to a frame and extend transversely to the direction of travel of the machine and are arranged at a distance one behind the other, wherein each carrier beam is provided with a plurality of arms, at the free end of which at least one rotatably mounted disc is arranged in each case, wherein the first and the second carrier beam can be pivoted and / or rotated in each case about its longitudinal axis at least in a limited manner, wherein the pivoting and / or rotation of the first and the second carrier beam can be adjusted by means suitable for the adjustment and at least one coupling element is arranged between the first and the second carrier beam, wherein the coupling element and the means for pivoting and / or rotating the carrier beams (4) are each combined to form a component (9), wherein the component (9) in each case consists of a central part which is rotatably fixed and / or displaceable on the frame (1), characterized in thatthe component (9) additionally consists of at least one actuating part which is arranged displaceably with respect to the central part or with respect to the frame (1) in the direction of travel (2) and is fastened to the first and / or second carrier beam (4).Soil-working device according to Claim 1, characterized in that the combined component (9) for coupling and pivoting and / or twisting the carrier beams (4) is designed as a central part which is designed as a spindle nut (10a) extended in the longitudinal direction, in which two adjusting parts which are designed as threaded rods (12a) shaped in the same direction engage.Soil-working appliance according to Claim 2, characterized in that the two adjusting parts which are designed as threaded rods (12a) are designed with the same thread pitch.Soil-working appliance according to Claim 2, characterized in that the two adjusting parts which are designed as threaded rods (12a) are designed with different thread pitches.Soil cultivation device according to claim 1, characterised in that the combined component (9) for coupling and pivoting and / or twisting the carrier beams (4) is designed as a central part which is designed as a sleeve (10b) with an external thread in the region of the attachment to the frame (1), in which two adjusting parts are rotatably mounted.Soil working device according to claim 1, characterised in that the combined component (9) for coupling and pivoting and / or twisting the carrier beams (4) is designed as a synchronous cylinder (9c) whose cylinder body (10c) forms the central part and whose piston rods (12c) each form an adjusting part.Soil-working device according to Claim 6, characterized in that the synchronous cylinder (9c) is designed as a pneumatic cylinder.Soil working device according to claim 6, characterised in that the synchronous cylinder (9c) is designed as a hydraulic cylinder.Soil working device according to one of the preceding claims, characterized in that the combined component (9) can be operated remotely for coupling and pivoting and / or rotation of the carrier beams (4).

Images