DE1062970B - Device for the automatic change of the use of attachable exchangeable plows in agricultural tractors with power lift and three-point suspension of the attachments - Google Patents

Description

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Π t nicfct / granted
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EXPLAINING PUBLICATION 1062 970

F 25796 III / 45 a

TO M E LDE TA G: MAY 21, 1958

NOTICE
THE REGISTRATION
AND ISSUE OF THE
EDITORIAL: AUGUST 6TH 1 9 5 9

The invention relates to a device for automatically changing the use of attachable reversible plows for tractors with power lifts and three-point attachment of the attachments according to patent 1 039 272 and aims to use the device according to this patent also for reversible plows, in particular angled reversible plows, to make applicable in a simple manner.

This is done according to the invention in that the device of the lifting lever and the with this firmly connected crank web is transferred directly to the yoke of the reversible plow. This takes place the change of the two halves of the plow into their operational position does not take place in two phases, as is the case with the device according to the main patent is the case, but in a single one, namely during the lifting of the Attachment device for the tools, with the one operating position before the start of the change of the plow in the other also automatically the locking device for the previous position is triggered. It is also achieved here that the plow half in the operating position is in front Something has already been dug out of the arable soil at the beginning of the change of use. Furthermore, according to the Invention of the upper link of the three-point suspension device are made in two parts, so that this when placing the plow half in the operating position on the arable soil upwards can buckle and so the ploughshare quickly penetrates the ground when plowing.

The drawing shows two embodiments of the invention, namely an example in which the actuating device for changing the operating position of the plow halves works and turns on second, in which the actuator is set to pressure.

Fig. 1 to 3 show the schematic representation of the actuating device for changing the operating position of the two halves of the plow in their mode of operation, namely Fig. 1 the device working on pull, where the solid representation shows the position of the individual parts before the start of the change of the Deployment position reproduces (working position of one plow half), while the dash-dotted representation shows this situation after the change of position has been completed; Fig. 2 and 3 show the Pressure working device, Fig. 2 showing the position of the actuating device before the start of the Change and Fig. 3 shows the position of use of the two plow halves after the change has been completed (upper position of the attachment device for attachments);

Fig. 4 shows an example according to the schematic representation of Fig. 1 in the extended position in side view and

Device for automatic change

the use of reversible plows on agricultural tractors with power lifts

and three-point hitch

the attachments

Addendum to patent 1,039,272

Applicant:

Gerhard Frost,

Friedewalde (Kr.Minden, Westf.)

Gerhard Frost, Friedewalde (Kr.Minden, Westf.), And Wilhelm Steinmann, Bremen, have been named as inventors

Fig. 5 shows a section through this example along line AB of Fig. 4;

Fig. 6 shows an example according to the representation of Fig. 2 in the side view and

Fig. 7 shows a section through this example along line CD in Fig. 6.

The reference numerals in all the illustrations are the same, provided they have the same names in terms of their names that correspond to one another in their design and mode of operation. In Fig. 1 to 3 these reference numerals are provided with a 'in the position with the hitch raised. The suspended in the lower links 1 and the upper link 2 of the three-point suspension device The attachment device for the tools essentially consists of the attachment shaft 3 with the stand 4 and the axis 5 firmly connected to this, on the the reversible plow 6 is rotatably mounted by means of the hollow shaft 8 firmly connected to the yoke 7 of the plow. To change the insert of the two halves of the plow, in the example according to Figs. 1, 2 and 5 on the upper link 2 a rocker arm 9 is provided, the other hand by the pull rod 10 with the at the upper end of the Stand 4 articulated angle lever 11 is connected to the longer lever arm of the cable change rod 12 is pivotably suspended. For controlled influencing of the deflection of the rocker arm 9 is this with its joint with the pull rod 10 with

909 580/109

connected to a steering arm 13, the other end of which is hinged to the stand 4. The connection of the Link arm with the rocker arm can also be done elsewhere, as shown. The cable change rod 12 is provided at the lower end with a double hook 14, one or the other Hook under which the two crank pins 15 is located, which is on the insert side of the plow, so that when lifting the hitch and the resulting movement of the angle lever in Direction of the arrow (Fig. 4) to the position resulting from the dot-dash position in Fig. 1, 11 ', the entire plow body is pivoted so far that the other half of the plow is in the operating position is brought. But before the hook 14 is brought into force-locking connection with the crank pin 15 is, is activated by the release hook 16 by means of the release rod 17 articulated on the angle lever 11 the locking latch 18 pulled out of the respective locking groove 19, through which device the plow in his respective deployment position is recorded. The locking latch is released again before the hitch has reached its uppermost position, so that as soon as the second operating position of the plow has been reached is, by the stop of the seated on the locking disc 20 firmly connected to the yoke 7 of the plow Stop cam 21 on the locking latch 18, the rotary movement of the plow is terminated and the locking latch can penetrate into the second locking groove 19, which is also provided on the locking disk. The lock washer 20 also serves for the front steering of the changeover rod 12, the rear steering by the guide plate 22, which is also firmly connected to the plow and on which perpendicular to yoke 7 the switching lever 23 is attached, which by means of the switching spring 25 attached to its spring pin 24, which, on the other hand, is attached to the spring pin 26 provided on the changeover rod 12, the changeover rod switches to the other side as soon as the up to then in a frictional connection with the hook

14 standing crank pin 15 releases this connection, so that after lowering the hitch Hook 14 is under the second crank pin 15.

In the example according to Fig. 2, 3, 6 and 7, in which the change of the operating position of the two plow halves takes place by means of the actuating device by pressure, this consists of the rocker arm 30, the is also articulated here on the upper link 2 and actuates the angle lever 32 by means of the push rod 31, the pressure change rod on the second lever arm

33 is articulated with the two hook-shaped recesses 34. The deflection angle of the rocker arm 30 and thus also that of the angle lever 32 is significantly influenced by the link arm 35, the here, in contrast to the first example, does not cross the upper link 2. Before the hook-shaped recess

34 of the pressure change rod 33 in frictional connection with the upper crank pin in this case

15 is brought, the locking latch 18 must first be removed from the locking groove when lifting the attachment be released, which takes place here by the release rod 36 articulated on the toggle lever 32, which Immediately after the beginning of the lifting of the attachment device with its lower end the cam 37 of the locking latch 18 pushes down and so lifts the locking latch out of the respective locking groove. Once the recess 34 is brought into positive connection with the relevant crank pin 15, this is through the pressure change rod pressed down until the locking latch 18 in the other locking groove 19 of the locking disc 20 engages, which takes place in the position of the overall device, which is approximately the representation of the Fig. 3 corresponds. Otherwise, the operation of the other parts of the device corresponds to this second Example exactly that of the first example.

The pull change rod of the first example can also be similar to the pressure change rod of the second For example only with hook-shaped recesses pointing upwards and the pressure change rod of the second example can be made similar to that of the first example with the hooks pointing downwards. In this case, however, the shift lever for switching the change rods must work for itself and so on be actuated that its spring pin for the switching spring during the lifting of the hitch itself moves opposite to the movement of the plow, or else the switching spring should not act as a pull, but be designed as a compression spring.

In the two examples (Fig. 4 and 6) the upper link 2 is divided into the two parts 40 and 41, in such a way that, if necessary, the entire link can buckle upwards. The back part 40 protrudes with its front end beyond the articulation of the handlebar 2 and is here as a drop bracket formed, which is provided with the bores 43 and 44 at the side. The web 45 prevents a Buckling of the handlebars downwards. A locking pin is inserted through the holes to block the handlebar 44 inserted so that the handlebar cannot buckle upwards. But this is when touching down the plow half in the operating position is desired, this locking pin is through the holes 43 inserted so that the upper link remains slightly bent upwards even in the extended position.

Claims (5)

Claims-. 1. Device for the automatic change of the use of attachable swap plows on farm tractors with power lifts and three-point suspension of the attachments according to patent 1 039 272 for changing operations with rotary plows, in particular angled reversible plows, characterized in that the two points of application on the crank web as a crank pin (15) directly on the yoke (7) of the reversible plow are arranged and by non-positive connection of one or the other crank pin with the corresponding hook (14 or 34) of the pull or push rod (12 or 33) of the Change of the operating position of one half of the plow to the other half of the plow during lifting the attachment device for the implements. 2. Apparatus according to claim 1, characterized in that during the change of the position of use one half of the plow on the other at the same time also the lever (23) with the Switching spring (24) is turned so that as soon as the hook in engagement of the pressure or Cable change rod is released by the relevant crank pin (15) after the beginning of the Lowering of the attachment device by the tensioned switching spring, the pull or push rod is turned so that after lowering the hitch, the second hook of the change rod is in engagement position on the second crank pin is located. 3. Apparatus according to claim 1 and 2, characterized in that when lifting the attachment device before the frictional connection of the one or the other hook of the change rod by one with the actuating device for the Change of use of the plow halves connected release rod (16, 17 or 36) the locking device (18, 19, 20) automatically triggered for the respective operating position of the plow and the same again is released before the assignment change is completed. 4. Apparatus according to claim 1 to 3, characterized in that the actuation of the actuating device for the automatic change of the operating position of the two plow halves by a rocker arm arranged on the upper link (9 or 30) takes place whose deflection angle is determined by a connected to it Link arm (13 or 35), the other on the Stand (4) of the attachment device is articulated and thus also the deflection angle and Paths of the remaining parts of the actuating device are determined. 5. Apparatus according to claim 1 to 4, characterized in that the upper link (2) in two Parts, a longer, front (41) and a shorter, rear part (40) is divided, which is articulated are connected to one another, and that the rear joint part beyond the joint is extended at the front, this extension being formed into a downwardly open bow latch is whose horizontal bar prevents the handlebar from buckling downwards and whose vertical bar Flanges are provided with bores (43, 44) for inserting a pin. 1 sheet of drawings © 909 580/109 7.