FR2628931A1 - MACHINE FOR WORKING THE SOIL - Google Patents

Abstract

Machine for working the soil, intended in particular for the preparation of seedlings, comprising a frame part 1 which extends transversely in the direction A of the advance of the machine and which carries soil working members, the frame 1 carrying in before a trestle for coupling the machine to the three-point lifting device of a tractor. A carrier frame is disposed behind the machine for working the soil, the carrier frame being provided with carrier wheels 38, at least one of which is self-orientable, the carrier frame being provided with a three-point attachment 41, 50 by which one another machine, such as a seed drill, can be coupled, the supporting frame being provided with side members 22 with which it can be connected to the machine for working the soil by means 24 by which the supporting frame can oscillate vertically by compared to the machine to work the soil.

Description

FRENCH REPUBLIC Q N of publication: 2 628 931 (use only for

  NATIONAL INSTITUTE reproduction orders) OF INDUSTRIAL PROPERTY O. o ^ e OF INDUSTRIAL PROPERTY National registration number: 89 04958 PARIS

  (Int CI4 A 01 B 59/043, 33/06, 49/02.

  @ APPLICATION FOR PATENT INVENTION Ai) Filing date: April 14, 1989. (D Applicant (s): C. van der Lely N.V., Société de droit

Dutch. - NL.

  Priority: NL, April 8, 1983, n 83.01236.

  (Inventor (s): Cornelis van der Lely.

  (Date of public availability of the

  application: BOPI "Patents" n 39 of September 29, 1989.

  ) References to other national documents appearing

  rented: Division requested on April 14, 1989 benefiting from the date of Q Holder (s): filing of April 6, 1984 of the initial request born 84 05 487

  (article 14 of the law of January 2, 1968 modified).

  {Agent (s): Cabinet Pierre Loyer.

(Machine for working the soil.

  Machine for working the soil, intended in particular for the preparation of seedlings. comprising a frame part 1 which extends transversely to the direction A of the advance of the machine and which carries the soil-working members, the frame 1 / [

  carrying in front an easel for mating the ma-

  china to the three-point lifting device of a tractor. A supporting frame is arranged behind the machine for working the soil, the carrying frame being provided with carrying wheels 38, at least one of which is self-orientating, the carrying frame being, - 1 provided with a three-point attachment 41 , 50 by which another machine, such as a seed drill, can be coupled, the carrier frame being provided with side members 22 with which it ''

  can be connected to the machine to work the soil through-

  - diary of means 24 by which the carrying frame can oscillate vertically relative to the machine to work the

 ground.

  N D Sale of booklets' IMPRIMERIE NATIONALE 27, rue de la Conventn75732 PARIS CEDEX 15 OL DVente booklets at IMPRIMERIE NATIONALE. 27. rue de las conventionn- 75732 PARIS CEDEX 15

  The invention relates to a machine for working

  valuing the ground, provided with a plurality of organs of

  work carried by the machine frame and a frame

  sis carrier, coupled to the frame and provided with

  adjustable lift for a combi device

ner with the machine.

  In machines for working this type of soil, the supporting frame is designed in such a way that its height above the ground remains the same both during operation and during transport, which can cause difficulties, especially during transport in the fields, when

  there are hollows and bumps.

  The invention aims to provide a chassis

  which cannot cause such difficulties.

  According to the invention, the problem is solved by providing a support frame adjustable in height

  with respect to the orientable lift members.

  Thanks to this arrangement, the chassis

  The whole body can be moved in height for transport and this increase in ground clearance almost completely eliminates the risk of encountering

the above difficulties.

  Another aspect of the invention for a machine for working the soil of the aforementioned kind, relates to the location, outside the wheel tracks

  of the tractor, swiveling lift members.

  In this way the deterioration of the structure of the

  seedbed is kept to a minimum.

  Another aspect of the invention relates to a supporting frame, intended to be used in a combination as defined above, supported by orientable levers and adjustable in height by height relative to said levers. The lift members may have a bearing surface on the ground having a width substantially equal to their diameter. The lift members may consist of two pairs of elements, the elements of the same pair being spaced apart from one another and pivotable around

  of a common substantially vertical axis.

  Finally, according to another aspect of the invention, each orientable lifting member is connected to the

  load-bearing chassis by a deformed articulated parallelogram

mable.

  Other objects and features of the in-

  vention will emerge from the description below which

  refers to the accompanying drawings showing, as

  nonlimiting examples, some forms of realization

  tion of the device according to the invention. In these drawings: FIG. 1 is a plan view of a machine for working the soil, provided with a carrying frame for a combined device, constituted in this example by a seed drill; Figure 2 is a side view of the combination of Figure 1;

  25. Figure 3 is a rear view of the chas-

  sis carrier during work; while

  Figure 4 is a rear view of the frame

  sis carrier in the transport position;

  FIG. 5 is a plan view of a combination

  similar to that of FIG. 1, in which the embodiment of the orientable members of

  chassis lift is different.

  The device shown in the figures relates to a machine for working the soil, intended in particular for the preparation of seedlings and provided with a carrying frame, ensuring the combination of the machine with another agricultural implement, for example a

seed drill or planter.

  The machine for working the soil comprises a part of a box-shaped frame 1, which extends transversely to the direction A of the advancement of the machine and which carries working members 3, which rotate around axes 2, directed upwards, preferably vertical and equidistant 25 cm preferably. Each working member 3 comprises a support member 4, substantially horizontal, disposed on the end of the axis 2 projecting below the box 1 and carrying tools 5 near its ends.

  shaped like teeth, directed downwards.

  In the box 1, on each of the axes 2 is wedged a toothed wheel 6 engaged with the two neighboring toothed wheels. Near the middle of the machine, axis 2

  of a working member 3 is extended upwards

  than in a gearbox 7, in which, by means of a variable speed drive 8 disposed at the rear

  of the gearbox, it is in drive link-

  with an axis 9, extending in the direction A of the front

  cement from the machine and which projects forward outside the gearbox. The end of the axis 9 which projects from the gearbox can be connected, by means of an intermediate axis 10, to the PTO axis of a tractor. At the ends of the box 1 are arranged substantially vertical plates 11, the height of which increases towards the rear and which extend until after the rear of the box. Near its front edge each of the plates 11 carries a journal 12, around which an arm 13 which oscillates

  extends backwards along the plate 11 corresponding to

  laying. The arms 13 can be immobilized in several positions using pins 14, cooperating with a perforation of the arm in question and one of a plurality of perforations 15 arranged one above

  on the other, near the rear edge of each plate 11.

  Between the free ends of the arms 13 turns freely-

  a roller 16 consisting of a plurality of longitudinal elements 17, in the form of rods, carried by circular supports 17A, located at some distance

one of the other.

  At the front, the box 1 carries an easel 18 for coupling the machine to the three-point lifting device of a tractor. The upper part of the easel 18 is connected to the rear of the box by

tie rods 19.

  A supporting frame 20 is disposed behind the machine for working the soil and is adjustable in height relative to the frame of the machine. The supporting frame 20 makes it possible to couple another device, such as a seed drill or a planter 21. The carrying frame 20 comprises longitudinal members 22, which extend practically

  horizontally and roughly in the direction of advance-

  ment but diverging backwards (Figures 1 and 2).

  At the front, the side members 22 are provided with a plate 23.

  Each of the two beams 22 can be coupled to the machine using a pin 24 which is engaged in a perforation of the corresponding plate 23 and in

  a perforation provided at the bottom of the cheva-

  let 18. The supporting frame 20 can thus oscillate vertically.

  wedging around the pins 24, which are located near the front of the box 1, in mutual extension and which

  extend transversely to the direction of travel.

  The two longitudinal members 22 are connected to each other at some distance in front of their center using a transverse spacer 25. The rear ends of the longitudinal members 22 are each provided with a post 26 which

  extends upward and preferably vertically.

2.628931

  The uprights 26 are connected to each other, at the top

  of the side members 22 and near their upper ends

  with a cross 27, respectively 28

  (figure 3). The crosspieces 27 and 28 extend practical-

  ment parallel to one another and to the transverse spacer 25. The spacer 25 is connected, near the middle, to the upper cross member 28 by means of two tie rods 29, which diverge towards the rear. On their sides, opposite one another, each of the uprights 26 is provided, near its upper and lower ends, with ears 30, between which is articulated an arm 32 around an axis 31. Each of the arms 32 is articulated at its other end, using a pin 31 and ears 32A, near the corresponding upper or lower end of a tubular support 33, which extends parallel to the uprights 26. Of each side of the chassis, the arms 32, the upright 26 and the support 33

  form an articulated quadrilateral, in particular a parallel

  deformable logram 34, which extends upwards, preferably vertically and slightly oblique towards the rear (FIG. 1). Near the articulation of the lower arm 32 to the support 23 of the articulation of the upper arm 32 to the upright 26 is articulated, on the arms 32, an adjustment cylinder 35, which can be controlled

hydraulically or pneumatically.

  In each of the tubular supports 33 rotates freely. an axis 36, which emerges downward. The axis 36 carries at its lower end a transverse axis 37,

  on which, on each side of the axis 36, turns freely-

  a wheel 38. Each of the wheels 38 is provided with a tire. The wheels 38 are arranged in such a way with respect to each other that the distance between the outer sides is practically equal to the diameter of a wheel (Figure 3). As shown in FIG. 2, each axis 36 extends, from the lower end of its support 33 obliquely downwards and towards

  the rear, so that the wheels 38 are self-

  orientable. Each pair of wheels 38 forms an orientable lifting member. Sleepers 27 and 28

  are connected by two plates 39, arranged symmetrically

  only in relation to the environment. The plates 39 are parallel to the direction A of the advancement and their front edge extends from the upper cross member 28 towards

  forward and down (Figure 2). Near the bottom edge

  laughing of each of the plates 39 is arranged a barrel

  lon 40, around which an arm 41 oscillates vertically.

  The arms 41 are directed towards the rear and pass under the crosspiece 27. Near the middle of each arm 41 is

  - articulated using a pin 42, the lower end

  of a tie rod 43. The upper end of each tie rod 43 is articulated around a pin 44 carried by a lug 45 which is fixed just above the middle to each of the plates 39. Each tie rod 43 is adjustable in length because each of its ends is made in the form of a threaded swivel. The pin 42 ′ can be introduced into one of several holes 46, three in this embodiment, which are located one behind the other, the whole so that the relative position of the tie rods 43 relative to the arms 41 can be changed. Near the middle of the upper cross member 28 are fixed at a short distance from each other, two ears 47, which extend rearward practically in the direction A of advancement and which are each provided with three holes 48, located one above the other. Using a pin 49, which is engaged in one of the pairs of holes 48, an arm 50 is articulated between the ears 47. The arm 50

  is adjustable in length. The arms 41 and 50 consist of

  kill a three-point attachment for coupling the three-point attachment of an instrument to be combined with the machine for working the soil described above, such as the drill 21, which is shown diagrammatically

in the figures.

  In another exemplary embodiment of a carrying frame 20A according to the invention, an arm 51 which

  swivels freely in each of the tubular supports

  laires 33 extends inwardly and obliquely downward and backward - (Figure 5) and carries a substantially horizontal transverse axis 52, which forms

  an axis of rotation for an orientable support member

  tation in the form of a wheel 53 with tire. The tire has

  a tread, the width of which is appreciable-

  ment equal to the diameter of the wheel 53. The diameter of the supporting wheels 38, respectively 53, is preferably

about 50 centimeters.

  The combination works as follows:

  boasts. During operation the machine for working the soil is coupled, using the easel 18, to the three-point lifting device of a tractor and thus this machine, the carrying frame 20, the seed drill which is coupled to it are propelled in arrow arrow A. The respective working members 3 of the machine are driven from the PTO axis of the tractor, through the intermediate axis 10, in directions, which are shown with arrows on

  FIG. 1, while the tools 5 of working members

  vail 3 neighbors work strips of land at least

  bordering. Roller 16 adjusts the depth

  working bodies 3 before starting. During operation, the supporting frame, which can oscillate around a transverse axis located

  at the front of the box 1 and formed by the longitudi-

  nals of the pins 24, is supported by two pairs of load wheels 38, which are located outside the wheel tracks of the tractor. The pairs of wheels 38 which can pivot freely around the axis 36 are self-orientating and each of these pairs has a surface

  the width of which is almost equal to the diameter

  wheel meter. Thanks to the obliquity of the deformable parallelograms 34 and the arrangement of the pairs of wheels 38, great stability of the carrier chassis is obtained. The position of the parallelograms 34, in the

  working position, is shown in figure 3.

  In this position, the arms 32 are practically horizontal. The supporting frame 20 thus constitutes an effective support and a practical coupling means for a device to be combined with the machine, such as the seed drill 21, since, thanks to the three-point fixing

  41, 50 provided at the rear of the carrier chassis, this provision

  sitive can move in height, during operation-

  independently of the chassis which it can move

  cer in height independently of the machine frame.

  As the pairs of load wheels 38, which are located one next to the other, remain during operation, as shown in FIG. 1, outside the footprints of the tractor, the support of the associated device is possible, the pressure on the ground being divided in such a way that the structure of the seedbed is practically not deteriorated. As the obliquity of the parallelograms 34 relative to a plane transverse to the advancement is very small, the assembly has a small overall length behind the tractor, which is very important especially

For transport.

  To bring the assembly into a transport position, the soil working machine is lifted from the tractor, using the lifting device, while at the same time, the jacks 35 for adjusting the parallelograms 34 are actuated . The parallelograms 34 and consequently the supporting frame 20 are thus brought into the position shown in FIG. 4. The arms 32

  then form an angle of about 45 with the horizontal.

  In this position the supporting frame has a guard at

  relatively large soil. While lifting the crop - -

  ble you can move at low speed and the wheels are

  teuses 38, which must move closer towards the longitudinal axis to reach the transport position, have the possibility of carrying out this movement, all the more easily as the pairs of wheels can

  pivot freely around axis 36.

  For the carrying frame 20A shown in FIG. 5, the operation is the same and it is also possible to proceed in the manner described above for

  put it in the transport position.

  The bearing surface of the wheels 53 in the embodiment according to FIG. 5 can further reduce

  more strongly than in the first example of realization

  tion, degradation of the seedbed structure.

Claims (3)

Claims   1. Machine for working the soil, intended in particular for the preparation of seedlings, comprising a frame part (1) which extends transversely to the direction A of the advance of the machine and which carries soil-working members, the frame (1) carrying in front a bridge for coupling the machine to the three-point lifting device of a tractor, characterized in that a supporting chassis is arranged behind the machine for working the soil, the supporting chassis being provided with supporting wheels {38, 53>, at least one of which is self-orientating, the supporting frame being provided with a three-point fixing (41, 50) by which another machine, tele than a seed drill, can be coupled , the supporting frame being provided with side members (22) with which it can be connected to the machine for working the ground by means (24) by which the supporting frame can oscillate vertically relative to the machine for working floor.   2, machine according to claim 1, characterized in that the steerable wheels (38, 53) of the carrier chassis are arranged outside the wheel tracks of the tractor, 3. machine according to any one of   previous claims, characterized in that the   steerable wheels (38) are arranged in pairs, the   organs of the same pair being spaced from each other.   4. Machine according to any one of   previous claims, characterized in that the   means L24> are located near the front of the frame (1) of the machine for working the soil. 1/3 lJ 'LiI. - 24,134 !? _ JE:? I5 ..... 262893.1   2/3 Y2144 39.3, s 38, 3SE 3 / o 3. go d7 3/32 373 37 3/3 Ai.À53X p /? O 53-s IfsX t2fob y 6 [ v uvvvVvI-b iV FWvvt dk