FI58705B - FAESTARMAR FOER ARBETSMASKINER TILL EN TRAKTOR - Google Patents

Description

Ι · * £ * »· 1 Γβ1 _ ADVERTISING PUBLICATION.SU r o rj n c * §« £ IBJ (11) UTLAGGNINGSSKRI FT 5 8705

Patent granted 10 04 1931 v7y7 Patent-meddelat * (51) Kv.ik./int.ci.JA 01 B 59/04, 59/044 FINLAND —FI NLAND (21) Patent application - PatanuiwOknlnc 752390 (22) Hakemlapllvl - Antöknlnjeda * 26.00. 75 * * (23) Alkupllvi —Giltlghuttdag 26.08.75 (41) Become Public - Bllvlt offentllg 27.02.77

Patents and registries .... ...... ... ,. ,, ,,, -, __ '.,, (44) Date of issue of the publication. -

Patent and ocean registration '· Anseksn utisgd och uti.ikriften public · ™! 31.12.80 (32) (33) (31) privilege — Begird prlorltet (71) (72) Jaakko Rikama, U1120 Puuppola, Finland -Finland (FI) (7 ^) Leitzinger Oy (5M Attachment arms for tractor implements - Fästarmar för arbetsmaskiner account en traktor

The known attachment arms of the tractor implements as defined in the preamble of claim 1 have not been connectable to the implements from the driver's seat and have not allowed the implement to be moved laterally while driving from the driver's seat. The attachment arms have had to be attached to the implements by hand and the driver of the tractor has had to stop the vehicle for lateral movement of the implement, e.g. to adapt the implement to a position suitable for use in row crops. This has been slow.and awkward, in addition to which there has been a certain risk of accident in carrying out the procedures.

The object of the present invention is to eliminate the above-mentioned drawbacks and to provide mounting arms for tractor implements which can be secured to the implement by hand from the driver's seat and to adjust the lateral position of the implement by adjusting the position of the attachment arms.

To achieve this object, the invention is characterized in that on both sides of the rear of the tractor there are slides in the longitudinal direction of the tractor, which can be moved and locked from the driver's seat, which are connected to the attachment arms by means of an articulated lever.

58705

By moving the slides, the driver can thus adjust the mutual distance between the mounting arms and their lateral position as desired without leaving the driver's seat.

The use of the attachment arms becomes even more versatile and simpler thanks to the embodiment of the invention in that the attachment arms are connected by pivot joints to a push or pull arm in the longitudinal center line of the tractor, the distance to which can be hydraulically changed. In this way, the push or pull arm is obtained hydraulically by moving the mounting arms symmetrically closer together and away from each other to engage and disengage the implements. In addition, this arrangement makes it possible to change the center of gravity of the tractor by moving the drawbars and their associated implements entirely away from or closer to the tractor. In addition, this arrangement can now be used to remove a stuck tractor.

Preferably, the pinhole locking of the slides, known per se, can be opened and locked with a spring-loaded pedal from the driver's seat. In this case, the implement connected to the attachment arms can be moved forwards and backwards by pressing both levers and moving the push or pull lever hydraulically, or the implement can be moved sideways by pressing only the second pedal and moving the push or pull lever hydraulically.

In the following, an embodiment of the invention will be described in more detail with reference to the accompanying drawings, in which Fig. 1 shows the mounting arms of tractor implements according to the invention, seen from above, with the mounting arms extended.

Fig. 2 shows the same as Fig. 1, but with the mounting arms turned close to each other.

Figure 3 shows the same seen from the side.

The push or pull arm 4 of the tractor consists of a piston rod movable in the hydraulic cylinder 5 with a towbar 1 at its end. Arranged on both sides of the driver's seat are adjusting slides 9, 58705 which can move along fixed guide rails 13 with adjusting slide guide members 10 at the rear end. The spring 16 keeps the pin 15 in the normally locked position. By pressing the foot pedal 12, the pinhole lock is released and the slide 9 can move freely in its longitudinal direction. This transfer movement can be arranged to be performed hydraulically or the driver can also perform it manually with a suitable transfer lever while sitting in the driver's seat.

The slide 9 is connected to the fastening arm 7 by means of an articulated lever 8, whereby both fastening arms 7 can be pivoted laterally separately and independently by moving the slides 9. In addition, both fastening arms 7 can be turned simultaneously by the piston-cylinder device 4,5. By moving both the slides 9 and the piston rod 4 simultaneously in the same direction, the center of gravity of the tractor is changed as the distance of the implement relative to the tractor changes. Moving only the second slide 9 causes the implement to move to the left or right, which is important in row crops, such as in the treatment of sugar beet. The driver, alone following the mirror, can control the implement between certain lines.

Claims (3)

4 58705 Attachment arms (7) for tractor implements, pivotally connected to the tractor and arranged separately by their own pivoting mechanisms for lateral pivoting, characterized in that on both sides of the rear of the tractor there are longitudinal slides (9) which can be moved and locked from the driver's seat. connected to the fastening arms (7) by means of an articulated lever (8). Mounting arms according to Claim 1, characterized in that the mounting arms (7) are connected by swivel joints to a push or pull arm (1, 4) in the longitudinal center line of the tractor, the distance to which can be hydraulically (4, 5) changed. Fastening arms according to Claim 1 or 2, characterized in that the pinhole locking (14, 15) of the slides (9, 10), which is known per se, can be opened and locked by means of a spring-loaded pedal (12) from the driver's seat.