DE1059225B - Device for turning angle and fully reversible plows - Google Patents

Description

~? Aent

igen

R 22824 III / 45 a

REGISTRATION DATE: MARCH 4, 1958

NOTICE
THE REGISTRATION
AND ISSUE OF THE
EDITORIAL: 11 JUNE 1 9 5 9

Angle and reversible plows have to be rotated by about 90 or 180 ° after they have been lifted out Change between right and left turning shares. Do not do this turning by hand To have to, it is known, among other things, to use a spring when lifting the plow is tensioned by the hydraulic lifting device and before reinserting the plow Rotation. This device has proven to be disadvantageous in practice, because the tensioning This spring means an additional load on the hydraulic lifting devices: Since this at multi-furrow plowing and unfavorable conditions often to the limit of their capacity is loaded, the additional tensioning of the spring means that lifting the plow is impossible.

The invention avoids the disadvantages of the known device. According to the invention, this is designed so that the spring used to turn the plow is stretched and tensioned during the lowering movement of the plow is then locked so that when the plow is lifted, the locking of the spring and thus its tension preserved.

In the device according to the invention, the spring work from the potential energy of the excavated Plow won, d. H. from a work capacity that is lost. Moreover, this represents Tensioning the spring provides useful cushioning that protects the sloping plow from damage. the The duration of the tensioning is preferably determined so that it is terminated when the plow touches the ground. The full weight of the plow is then available for pulling the plow into the ground. If desired, the tensioning can also be stopped later in order to release the spring after the Plow into the ground to an adjustable extent to affect the plow. The feather then replaces the known springs, which are used to transfer the weight of the plow or part of the Find the plow weight on the tractor.

The invention further relates to means to automatically tension the spring after a certain fall path to finish and lock without loosening the connection of the. Pen with the grindel or special Locking means are required. This can be done by the effective lever arm of the the spring tensioning angle lever in a manner known per se at the end of the tensioning movement zero or almost zero. The invention also relates to the means necessary after turning the plow Relaxation of the spring to bring about the change in the position of the to turn the plow Serving linkage is required. The spring must be able to complete the rotation.

Device for turning
of angle and reversible plows

Applicant:

Rabewerk Heinrich Clausing,
Linne via Bohmte (District Osnabrück)

Ferdinand Zach, Bad Essen,
has been named as the inventor

ren, d. that is, it must still be able to exert a certain force at the end of the rotary movement. Appropriate the known measure is used, the size of the existing in the cocked position to make effective lever arm adjustable. This force would have to be tightened at the same time the spring are overcome in order to bring them into engagement on the other side of the rotating device. Since such a force is not available, means must be used at the end of the Rotate movement to relax the spring. Appropriately, this happens automatically through to the notches or funds attached to the notches, as they are known from other institutions are.

The invention is explained with reference to the drawing, which shows several exemplary embodiments.

Figs. 1 to 5 show different embodiments to carry out the tensioning of the spring so that it is ended after a certain lowering path of the plow. In the figures, the tractor is denoted by 1, the lower links with 2, the upper link with 3 and the coupling carrying the plow with 4. The shaft 6, which carries the reversible plow shown in Fig. 17 or an angled reversible plow, is rotatably mounted in one of the bearings 5 firmly connected to the coupling 4. A lever 8 mounted at the upper end of the coupling 4 serves to carry out the rotary movement and causes the plow to rotate via a linkage 7 of any configuration indicated by a dash-dotted line in FIGS. 6 to 17.

The spring 9 which causes the rotation engages the lever 8. The spring at 10 is used to tension the spring Angle lever mounted on the coupling 4, with the short lever arm 11 of which the spring 9 is connected. Of the

909 530/118

longer lever arm 12 has several bores 16 for hanging a chain 13, which is shown in Fig. 1 on the hitch of the tractor 1 is attached.

Fig. 1 shows the spring 9 at the end of tensioning. The clamping itself takes place through the rotary movement of the angle lever 11, 12 about the axis 10 when lowering, since the arm 12 during lowering by the Chain 13 is held on the tractor. At the beginning of the clamping, the lever arm corresponds to the clamping the spring 9 is the distance of the attachment point 15 of the spring 9 on the lever arm 11 from the pin 10. During the clamping movement, the arm 11 pivots about the pin 10, whereby, as the drawing shows, the lever arm becomes approximately zero, d. H. you can tension the spring after a certain fall finish of the plow. The size of this path can be adjusted by hanging the chain 13 in one of the holes 16 of the lever arm 12 can be changed. As soon as the lever 11, 12 has reached the position shown in Fig. 1, the spring does not hinder further lowering and penetration of the plow into the ground. Relaxing the spring during the rotary movement of the plow is done by releasing the lever 8. In this At this point, the chain 13 is loose. The lever arm, d. H. the distance of the center line of the spring from the axis of the pin 10 should be large enough to allow the lever to pivot counterclockwise to reach.

In the embodiment of FIG. 2, the chain 13 is fastened in a hook 14, which at the same time forms the bolt for the upper link 3 on the tractor 1. The angle lever 11, 12 not only has several Bores 16 for hanging the chain 13, but also in the arm 11 several bores 17 for insertion a rigid pulling piece 18 to which the lower end of the spring 9 is attached. The position of the pulling piece 18 to the angle lever 11, 12 can be adjusted by a screw 19, which is located before the end of the Tensioning is supported on the flap 20 of the angle lever.

The versions according to Fig. 2 give the possibility, like the one in Fig. 1, by hanging the chain around 13 to select the point in time at which the tensioning of the spring is terminated; but the holes 17 allow further to vary the size of the spring tension, and finally the screw 19 allows the size of the lever arm with which the spring 9 acts on the angle lever to change and thus the size of the weight relief of the plow and the additional load of the tractor during cultivation. For example, the lever arm will be kept small in the case of heavy work Bottom and big with light.

Fig. 3 shows the attachment of the chain 13 to a hook 14 on the bolt of the upper link 3 can be postponed. The spring 9 is attached to the pin 15 of the lever arm 11 via a steel cable 21. Otherwise, the device of Fig. 3 corresponds to that of Fig. 1.

In the exemplary embodiment according to FIG. 4, the chain 13 is articulated on a hook 22 of the upper link 3. Instead of the angle lever 11, 12, a two-part lever is used Lever, which consists of a segment 23 and a lever arm 24 for tensioning the spring. Both can pivot about the pin 10 and are coupled by a pin 25. This coupling can by means of the holes 26 take place in different angular positions to each other, which in turn gives the possibility of the To be able to stretch spring 9 differently. So you can with the embodiment according to Fig. 4, As with the one according to Fig. 2, the size of the spring tension and the end of the tensioning vary.

In the embodiment of Fig. 5, the chain 13 is by an arm 27 of the around the pin 10 oscillating, plate-shaped angle lever 28 replaced. The arm 27 is supported with the pin 29 the lower links 2. The swivel lever 28 has several bores 30 for inserting the end of the Rope 21 for tensioning the spring and a number of holes 32 with which the lever arm can be changed can, with which the spring 9 in the tensioned position

ίο engages the angle lever, and thus also the size the weight transferred to the tractor.

Fig. 6 shows the devices necessary to tension the spring 9 and to relax it. On the coupling 4, an angle lever is again mounted at 10. The spring 9 acts on the arm 33 of the lever, the other end of which is attached to the lever 8.

The arm 34 of the lever is, for example, as shown in Fig. 1, connected to the tractor by a chain 13 tied together. Another arm 35 is supported on a bolt 36 which is pivotable at 37 on the coupling 4 is stored. A spring 38 presses the lever 36 with its nose 39 against the coupling.

On the hub 31 of the plow, the notch bow 40 is attached to the notches 41 and 42, which the two Determine the end positions of the reversible plow. These notches are spaced from each other with the help of the holes 43 adjustable. Each of the notches 41, 42 has a curved rising portion 44 for lifting the Latch 45 and a nose 46 to limit the rotary movement.

The bolt 45 is pivotably mounted at 47 on the coupling 4 and is inserted into the cutout by a spring 48 the catches 41, 42 pressed. A pull hook 49 is pivotably mounted on the bolt 45, approximately in its middle, which is pulled to the coupling by a spring 50. A lever 51 is used to raise the bolt 45, which is mounted at 52 on the paddock and has two arms 53 and 54. The arm 53 is used to raise the Latch 45, the arm 54 for pivoting the pull

φο hook p 49.

The operation of the device is as follows: Should be after the plow has been lifted out or before it is used again the turning are carried out, the lever 51 is pivoted by hand. So that will be first the draw hook 49 is brought out of engagement with the bolt 36 and then the bolt 45 is lifted. This releases the lever 8 so that the spring 9 pivots this lever down and over the linkage 7 rotates the plow. The hook 51 is after the release of the bolt 45 before the end of the turning process released again, the bolt 45 falls down onto the upper edge of the notch arch 40, and the draw hook 49 re-engages the bolt 36, i. e., a movement of the lever arm 33 can do not take place. The spring 9 retains sufficient tension to the end of the rotary movement Perform turning process.

At the end of the rotary movement, the bolt 45 is raised by the edge 44 of the catch 42. With him the draw hook 49 is raised and the bolt 36 is pivoted upwards. The arm 35 is released, the arm 33 swings upwards; since the chain 13 is loose in the raised position, the Spring 9 completely relaxed, and the lever 8 with the linkage 7 can be in the position for the next Rotational movement can be brought back without a tension of the spring 9 being overcome got to.

During the subsequent lowering movement of the plow, the lever 33, 34, 35 is again in the

Claims (10)

Pivoted clockwise, he lifts the bolt 30, d. that is, the arm 35 is locked again by this bolt. During the rotary movement of the lever, the spring 9 is tensioned in the manner described with reference to FIGS. 1 to 5. In the exemplary embodiments according to FIGS. 8 to 10, the lever arm 35 is unlocked, i.e. the spring 9 is relaxed, by means of stops 55 which are attached to the notches 41 and 42 of the notch arch 40. The stops pivot an arcuate lever 56 which is pivotable about a pin 57 lying parallel to the coupling 4. This lever has two lugs 58, 59 which, depending on the pivoting direction, act on a lever 60 which is hinged to the coupling at 61 and is pulled against the coupling by a spring 62. The lever 60 has a pin 63 lying parallel to the pin 61, about which the plunger 64 can be pivoted vertically. The locking hook 66 for the arm 35 is articulated at 65 on one arm of the coupling 4. As Fig. 8 shows, at the end of the pivoting movement, one of the stops 55 lifts the lever 56 so that the spring 9 can relax. Since the plunger 64 pivots about the pin 65 at the same time as it is lifted out, at the end of the movement it comes to a position above the nose 67 of the lever 66, so that it can return to the blocking position. In the embodiment according to FIGS. 11 and 12, the unlocking of the lever arm 35 takes place automatically from the notch arch 40, through the noses 68 located below the notches. The notches 41 are here rotated by 90 ° compared to FIGS. The bolt 45 is not perpendicular to the coupling as before, but parallel to it and swivels around the pin 69. At 70, a double-armed lever is pivotably mounted, the lever arm 71 of which carries a roller 72 and the lever arm 73 of which carries the locking hook 74, which is held by a spring is held in engagement with a curved pawl 75 which pivots about the pin 76 on the coupling. At 77, a further angle lever with the arms 78 and 79 can be pivoted on the pawl 75. On the arm 35 of the lever used to tension the spring 9 there is a lug 80 which lies in the path of the lever arm 79. In the position shown, the nose 80 is locked by the bolt 75; the bolt 75 is released when the roller 72 is pressed down through the nose 68 of one of the notches 41, 42. Then the draw hook 74 lifts the bolt 75, and the nose 80 and thus also the lever arm 33 are released. The spring 9 can now relax, the lever arm 33 then pivots counterclockwise. Its nose 80 hits the lever arm 79, swivels it about the pin 77. In doing so, the arm 78 releases the pull hook 74 so that the locking hook 35 can return to its starting position and lock the arm 33 again. In the exemplary embodiment according to FIGS. 13 and 14, the arm 35 is replaced by a pin 81 on the lever arm 32. It is held in place by a lever 82 which pivots about the pin 83 and is held in engagement with the pin 81 by a spring 84. A lug 85 limits the end position of the lever 82. A lever 86 can also be pivoted about the pin 83, which lugs against the lever 82 with a lug 86 a. The lever 86 carries a roller 87 which is controlled by an inclined guide piece 88 on each of the notches. Depending on the direction of movement, the piece 88 pivots the roller 87 downwards once and upwards the other time. However, the lever 82 is only lifted out during the downward movement of the roller 87. In the end position of the segment 40 itself, the roller falls back into the position shown. In the exemplary embodiment according to FIGS. 15 and 16, the unlocking takes place again from a projection 89 of the catches 41, 42. A fork-like lever 91, which is held in a central position by a leaf spring 92, is mounted on the lever arm 35 so as to be pivotable about the pin 90. On this lever, a small lever 94 can be pivoted at 93, which, through the stop 89, brings the lever 91 out of engagement with the nose 95 of the coupling 4. Here, too, the unlocking takes place in the end positions of the segment 40. The resilience of the lever 94 allows the lever 91 to snap into place behind the nose 95 when the spring 9 is tensioned, although the stop 89 maintains its position during this movement. 17 shows the arrangement of two stops 96 and 97 on the coupling 4 for the lever 34. The stop 96 is fastened to a lever 98 which can pivot about an axis 99 fastened to the coupling 4. The first stop 96 limits on the one hand the tensioning of the spring 9 and on the other hand the further lowering movement of the plow and thus the depth of the field. In this case, the upper link 3 must be guided in a slot 100 of the coupling 4. The plow then swivels around the traction point marked Z, which is the point of intersection of the extended chain line 13 with the lower links 2. In order to be able to maintain the field depth until the plow is lifted before the tractor moves out of the furrow, the lever 98 must be pivoted, ie. H. the stop 96 can be released. The plow then lowers further until the stop 97 comes to rest with the lever arm 34. P A T E N T Λ N S P R t! C H E: 1. Device for turning angle or reversible plows with the aid of a tensioned spring, characterized in that the spring (9) used to turn the plow during lowering the plow is tensioned by the plow weight and locked at the end of tensioning so that a relaxation of the spring when lifting the plow cannot occur. 2. Device according to claim 1, characterized in that the tensioning of the spring (9) through an angle lever] (11, 12) mounted on the coupling (4) takes place, the arm (11) of which with the spring (9) and its arm (12) with a point of the tractor, the lower link or the upper link connected is. 3. Device according to claim 2, characterized in that the tensioning of the spring (9) when Lowering is limited by the effective lever arm of the angle lever at the end of the Clamping movement becomes zero or approximately zero in a manner known per se. 4. Device according to claim 2, characterized in that the size of the clamped Position existing effective lever arm is adjustable in a known manner. 5. Device according to claims 2 and 3, characterized in that the size of the spring tension at the end of the clamping movement by changing the transmission ratio of the two Lever arms (11, 12) of the angle lever is adjustable. 6. Device according to claim 1, characterized in that in a known manner on At the end of the turning movement, the spring (9) still has sufficient tension to turn the plow possesses and after the plow has locked into the respective end position a complete relaxation of the Spring is brought about. 7. Device according to claims, characterized in that that the relaxation of the spring (9) in a known manner by on the notches (41, 42) or means (44, 55, 68, 88, 89) attached to the footrest arch are brought about automatically. 8. Device according to claim 1, characterized in that an adjustable on the coupling (4) Stop (96) attached to limit the path of the lever (34) tensioning the spring (9) is. 9. Device according to claim 8, characterized in that the stop (96) by hand disengageable and a second stop (97) is attached to the coupling, which after an additional Movement of the clamping lever (34) after releasing the stop (96) holds the clamping lever in place. 10. Device according to claim 8, characterized in that the coupling (4) opposite the upper link (3) is free to move during plowing. Considered publications:
German patent specifications No. 963 560, 945 054 ,,
903;
German interpretative document No. 1 006 192. 1 sheet of drawings © 909 530/118 6. 59