DE1221478B - Side adjustment device for a semi-mounted plow - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

AOIb

German class: 45a-W02

Number:
File number:
Registration date:
Display day:

1221478
R39538III / 45a
December 24, 1964
July 21, 1966

The invention relates to a side adjustment device for semi-mounted plows and aims that To ensure compliance with a uniform working width of the first plow body, namely in ■ primarily when the furrow wheels of the tractor do not run in the fore furrow as usual can, d. i.e., the tug is not like a backdrop and deviations of the tractor from the fore furrow practically hardly occur. The leadership the tractor through the fore furrow is not possible with the mostly multi-blade semi-mounted plows, because they require large tractors with wide tires that can no longer drive in the furrow, at least not anymore without pressing down the plowed soil again. For this reason one is forced the tugs on the unploughed land at such a distance from the fore furrow too drive so that the edge of the pre-furrow is retained. In this case the tractor driver has to ' Maintain the correct distance to the edge of the pre-furrow when the first body is cutting evenly wide target. However, maintaining a constant distance is difficult and in poor visibility not possible at all. So in practice you have to expect that this distance will alternate in one or other direction changes. However, these changes also affect the way the plow is guided off, d. That is, the plow changes its distance to the fore furrow.

A trailer plow is known, which is articulated on both the tractor and the plow Drawbar is attached to the drawbar of the tractor. From a cross rail of the plow from a strut leads to the pull rod, the pivoting of the pull rod relative to the plow only allows against a mechanical or pneumatic spring force. From the front transport wheels of the plow is used during plowing as located in front of the plow bodies, on the wall of the fore furrow adjacent guide wheel. This wheel, together with the other front wheel, has the Task of keeping the plow at the correct field depth. As a result of the resilient strut, any setting of the support force of the guide rades not possible.

Furthermore, a semi-mounted plow is known which is attached to the coupling of a three-point linkage so that it can be swung out to the side. The coupling, however, is locked during work with the semi-mounted plow by a diagonal strut which allows the lower links of the three-point linkage to swing out sideways
Semi-mounted plow

Applicant:

Rabewerk Heinrich Clausing, Linne about Bohmte

prevents, so that this does not contribute to the formation of an ideal pivot point.

A mounted plow is also known with a disc which is arranged in front of the plow bodies and rests against the wall of the Vqrfurche for guiding purposes. The plow can only pivot around a single pivot point relative to the tractor, namely the ideal pivot point of the three-point linkage.
¹ The invention provides a semi-mounted plow is to be formed so that the lateral contact force of a arranged in front of the plow bodies the guide wheel is freely adjustable. The semi-mounted plow according to the invention is characterized in that lying on the plow frame in the pulling direction in front of the first plow body, a lateral system or a lateral guide wheel is attached, which guides the plow on the furrow wall, and that the pulling force from the tractor to the plow is transmitted Linkage has, in a manner known per se, at least two articulation points or traction points that permit lateral pivoting of the plow and tractor with respect to one another. At the desired working depth, this wheel should not touch the bottom of the furrow or should only just touch it, ie it should not have any influence on the working depth of the plow. When using such a guide wheel, changes in the distance between the tractor wheels and the fore furrow cannot adversely affect the guidance of the plow. What is essential here, however, is that on the one hand sufficient, but on the other hand no excessive lateral forces can have an effect on the system used to guide the plow or on the wheel that acts as a system. In order to keep these forces within the desired limits, according to the invention the linkage coupling the plow to the tractor is designed so that it contains two hinge points and thus two pulling points so that one pulling point can be aligned with the tractor and the other with the plow frame . If, as usual, the lower links of a three-point linkage are used to transmit the tensile force, the point of intersection of the lower links forms the articulation point on the tractor that is far from the tractor. It is then only necessary in

609 590/105

Claims (5)

i 221 to move this coupling foot along the Bar 13. Like the A b b. 1 reveals, the pivot pin 12 forms the one pulling point Z _{1 of} the plow; _{Another pull point Z 2 in} front of the rear wheels is an ideal pull point that lies on the extension of the two lower links 2 and 3 of the three-point linkage. The connecting line Z _{v of the} two traction points goes through the center M of the rear axle to provide a second articulation point for the plow front frame, which acts as a coupling for the above-mentioned links, which can form either a real or an ideal traction point. When using a linkage for the transmission of traction with two traction points, the connecting line of the two traction points can be placed in such a way that they are in the
Plan view exactly or approximated by the
Passes through the center of the tractor rear wheel axle and
at the same time a sufficient contact force for the guidance of the tractor and cuts the extended imaginary approximation wheel of the plow is achieved, but an axis of the wheel 8 that is too high in one point. This point of side pressure is avoided. To this connects for each overall Hegt in the drawing slightly above the line, the desired distance of the tractor from the furrow the point Z ₁ and the point B of the ensure according to the invention the Pflugvorder- intersection of the resistance line W and prolong 'Frame further designed so that the position of the plow 15 corresponds to the imaginary axis of the support wheel 6. As to the tractor and also the desired position shown in the diagram of forces entered in A , there is a connecting line between the two traction points - in this position of point A , one can be set for wheel 8. Contact force A _v . With the invention it is achieved that changes The line connecting the pulling points Z ₁ and Z ₂ the distance of the tractor from the fore furrow by ao goes through the center M of the tractor rear axle, so half the width of the furrow is allowed to allow the tractor and plow to move, without these changes affecting each other no forces exerted by the front plow impact. wheels of the tractor must be included. Two embodiments of the invention are in the desire to change the force, it is the following described on the basis of the drawing. Not exactly in terms of conditions, but so largely earthly shows ■ '"fills that the deviations do not relate to the Fig. 1 is a plan view of a shown schematically Semi-mounted plow and its connection to a tractor with the help of the lower link of a Three-point linkage From b. 2 a view of the same plow, with a modified one; Training of the plow front frame. In the drawing, 1 denotes a common one effect of the plow. When setting the plow it is advantageous to go in the following way: First, at a desired distance α the tractor wheels from the furrow edge 9 with hooves the spindle 15 of the plow frame 4 adjusted so that the guide wheel 8 rests against the Fürchenkante 9. Then the next furrow or, in the case of a four- Tractor with the two lower links 2 and 3 35 plowed the next four furrows. Shows a three-point linkage .. The frame of the plow is doing that the contact pressure of the wheel 8 is with 4, the. Associated: Plow bodies are small or too large with 5, then the lower figures are drawn. In the exemplary embodiment, four ploughters 2, 3 are adjusted so that the position of the line Z _v body changes. At the rear end of the plow and thus the position of the point test changes. A support wheel 6 is seated as usual, which at the same time holds 4 °, depending on the adjustment device for A _v, also serves as a transport wheel and as an attachment, ie the larger or smaller value. Side pressure A _h receives .. The side pressure A _k In the embodiment according to Fig. 2 is could also be taken over by a long system the tractive force by two rods 17 and 18 and run the wheel on unploughed ground. wear. Both; Rods are articulated with one another at 19-lying in front of the first plow body 5, an arm 7 45 is connected to the other. The free ends of the rods 17 are attached to the frame 4. He wears a wheel 8 that see. 18 are at 20 on the coupling part 13 and at 21 on a side against the side edge ^ of the fore furrow
and is intended to be the framework. 4 of the plow; in
constant distance from the furrow edge 9 to to lead. Instead of the wheel, a fixed 50 can also be connected to it. Stepping on a plant, e.g. a plate. Das- plow front- Die for turning the line Z _v or adjusting the frame, consists of two coupling pieces 10 and 11, which are connected to each other by a Getenkzapfen, 12 who are. This is perpendicular to the plane of the drawing The pin only allows lateral pivoting movements. Tractor and plow relative to each other too. The front one Coupling piece 10 is. slidable on a rod 13, which belongs to the plow conveyor frame and serves as a coupling for the lower links 2 "3". The rear Coupling piece 11 is slidable on the frame ^ - 5o design shows that the second joint point » part 14, on the frame 4 is rotatable a thread can be formed by an ideal pulling point, Bridge 22 of the frame 4 is articulated. In this bridge several holes 23 are provided around the rod 18 at different angles to the frame, with The spindle 16 serving the tension point Z ₁ is, as before, rotatably mounted on the rod 13 and guided in a nut 24 which is mounted on the rod 17. The one for adjusting the frame 4 to the tractor or to the coupling 13 of the three-point linkage serving spindle 15 is rotatably mounted in a boom 25 ^ the at. the rod 13 is attached. The nut 26 belonging to the spindle is hinged to the frame 4. These Spindle 15 mounted «It passes through a threaded hole of the coupling piece: 11. With hooves this Spindle can the coupling piece 'relative to Frame 4 can be moved. A second threaded spindle 16 is rotatable on the Stang & 13 stored. It penetrates a threaded hole of the front coupling piece 10 and serves which in turn is designated by Z ₁ . Patent claims: ! .. side adjustment device for a saddle-up plow, durchgekennzeich.net that on Plow frame (4) in the · direction of pull before first plow body Hegend ,, a side attachment or a lateral guide wheel (8) is attached, which guides the plow on the furrow wall, and that the linkage transmitting the pulling force from the tractor to the plow in a manner known per se at least two articulated points that allow the plow and tractor to pivot out to the side or pull points (Z ₁ , Z ₂ ). 2. Apparatus according to claim 1, characterized in that one of the two articulation points is formed by the lower links (2, 3) of a three-point linkage and coincides with the ideal traction point (Z ₂ ) of the link, while the second articulation point (Z ₁ ) can form either a real or an ideal traction point. 3. Apparatus according to claim 1, characterized in that the plow frame (4) in its lateral position to the plow front frame (13) and the lateral position and inclination of the connecting line (Z _v ) of the two traction points (Z ₁ , Z ₂ ) to the tractor longitudinal axis each for are adjustable. 4. Apparatus according to claim 3, characterized in that the plow front frame is two articulated having interconnected coupling pieces (10, 11), one of which on the Plow frame (4) and the other on the part forming the coupling of the lower links (2, 3) (13) is displaceable, and that the displacement of both takes place by threaded spindles (15, 16), of which one on the plow frame (4) and the other on the part forming the coupling (13) is rotatably mounted (Fig. 1). 5. Apparatus according to claim 3, characterized in that the part (13) of the plow front frame forming the coupling and the plow frame (4) are coupled by articulated rods (17, 18), the ends of which are articulated to said parts (4, 13) are connected, and that one threaded spindle (16) for the rotation of the connecting line (Z _v ) of both traction points (Z ₁ , Z ₂ ) with one rod (17) and with the part (13) of the front frame forming the coupling and the other threaded spindle (15) for the displacement of the plow frame (4) is connected to this and to a boom (25) which is attached to the part (13) forming the plow front frame (Fig. 2). Considered publications:
British Patent No. 596,623;
U.S. Patent No. 1190 132;
"Fundamentals of Agricultural Engineering", No. 4, year 1953, p. 80, Fig. 5. 1 sheet of drawings 609 590/105 7.66 © Bundesdruckerei Berlin