FR2763208A1 - Large hay rake machine - Google Patents

Abstract

The large agricultural machine, for raking mown hay into swaths, is a tractor-drawn trailer (2) with four circular rakes rotating on vertical axes. Two circular rakes (22,24) are on a sub-frame (3) coupled to the tractor, riding on support wheels (5,6). Two further circular rakes (23,25) are on a second sub-frame (40, coupled to the first (3), riding on support wheels (7,8).The carrier arms are pivoted to swing upwards. Both sub-frames (3,4) may have wheels (5-8) which are steered by steering rods. The first sub-frame (3) may be coupled to the tractor by a push/pull rod (16), and a second push/pull rod (17) can connect the second sub-frame (4) to the first (3)

Description

The invention relates to a large capacity rake with several rotors,

  capable of being coupled to a tractor and comprising, as rotors, rakes driven in rotation about vertical axes, which are articulated in connection with a frame resting on the

  ground by rolling wheels, the rotary rakes com-

  each bearing teeth controlled by cam profiles for swathing the raked product. Rakes

  with several rotors of this type are already known by the do-

  cument EP OS 485698 for example. In the case of this year-

  known stalker, three rotary rakes, arranged in a

  mutually offset lesson, are coordinated with a built

  mun resting on the ground by rolling wheels.

  When three rotary rakes are so arranged in a

  lesson staggered or staggered one behind the other, the frame already has such a great length that if the ground

  has accentuated bumps and / or depressions,

  cultivation can arise at the level of soil adaptation of different rakes. By equipping the machine with four rotary rakes, the length between supports of the frame would be even greater, which would lead to degradation

  even stronger adaptability to the soil.

  The object of the present invention is to create a large capacity swather, with several rotors, capable of being coupled to a tractor and comprising, as

  than rotors, three or more rotary rakes, an-

  daineuse which must also offer sufficient adaptability

  fisante on the ground of the various rakes during the passage on

  bumps or in hollows.

  According to the invention, this re-

  result of the fact that the large capacity swather is made with four rotors respectively forming two

  rotary rakes connected in an articulated way, through the

  medium of liftable arms by tilting,

  a first frame which can be coupled to a tractor and pre-

  bearing on the ground by supporting wheels, and two other rotary rakes connected in an articulated manner, by

  by means of tiltable lifting arms

  sound, to a second frame which also rests on the

  ground by support wheels and is coupled to the first frame.

  Due to the division according to the invention of the

  built in a first and a second built, we get, from my-

  advantageous, a length between supports acceptable for the two frames, which ensures good adaptability to the ground to the different rotary rakes of the

  high capacity, even if the bumps in the ground are relatively

very important.

  In principle, it is also possible to install only one large diameter rotary rake on each frame or to install more than two smaller diameter rotary rakes on it. One can also conceive an example of embodiment using rotary rakes whose

teeth are not ordered.

  A development of the invention provides that the two frames include support wheels steerable by steering linkages, the linkage of the first

  frame being coupled by a push and pull bar

  to the drawbar of the tractor dragging the machine

  and the linkage of the second frame being coupled to the first

  mier built by an additional push bar and

  traction. The steering geometry of the steering system

  tion of the large capacity swather is designed, in this case, so that the support wheels of the first frame

  and also the support wheels of the second frame follow ap-

  approximately the trace of the tractor dragging the machine.

  Despite the considerable overall length of

  the large capacity swather, you get good

  the machine cannot be moved due to the steerable support wheels, so that movement on paths

  narrow and winding is perfectly possible too.

  Another development of the invention provides that the liftable carrying arms of the rotary rakes projecting laterally outwardly, are made so that they can be folded by providing at least two folding joints and can thus be shortened. The folding joints on the carrying arms allow on the one hand the adjustment of the working width and on the other hand the lowering of the rakes concerned when the arms are raised, which makes it possible to obtain an admissible transport height for displacements

on the road.

  The invention further provides that the frames include

  bear beams made with an offset or an

  laterally bending towards the far side of the rakes

  tatives. By the lateral inflection in the spar of the

  built, we advantageously create the new free space

  required for the coupling and in particular also for the

  tilting of the rotary rake concerned.

  According to another development of the invention,

  hydraulic motors are provided as means of

  dragging rotary rakes. These engines can be powered simply from the tractor through suitable hydraulic lines. It is in principle also possible to use other known means for

rake training.

  According to a first example of execution, the ma-

  china is made as a swather forming a swath

  central, on which the rakes before pairs of râ-

  cooperating rotary tables are more willing to

  outside. The rakes of the first building and those of the

  cond cond are then arranged relative to each other, so that they collectively collect a

central swath.

  Another embodiment of the invention provides that the machine is made like a swather

  forming a lateral swath, on which the rakes

  1st pairs of cooperating rotary rakes are arranged obliquely offset behind the rotary rakes in front of them and their axes of rotation

  are located in a common fictitious plane oriented oblique-

  relative to the plane containing the direction of advance-

  is lying. With this machine, the raked product is only moved laterally in one direction. Especially in case the quantity of forage to be handled is relatively

  weak, during the second cut for example, this year

  lateral dater also allows to form a large an-

  dain by the gathering of two lateral swaths.

  The object of the present invention is not li-

  dovetailed to individual claims, but

also covers their combination.

  Other features and advantages of the

  vention will emerge more clearly from the description

  which will follow from several nonlimiting exemplary embodiments, as well as from the appended drawings, in which: - Figure 1 is a schematic top view of a swather, which can be coupled to a tractor, having four rotary rakes to form a swath

  central, each of which two rakes are linked in a

  lesson articulated with a common frame; - Figure 2 is a schematic top view of a swather similar to that of Figure 1, but whose different rotary rakes are arranged relative to each other for the formation of a side swath; and - Figure 3 shows a rear view of an embodiment in which the carrying arms

  for rotary rakes located further outside

  have folding joints for varying the length

hug of arms.

  Figure 1 shows a top plan view

  mast a large capacity swather 2, which can be coupled to a tractor 1, which includes a first frame 3, which can be coupled to the tractor, 1 as well as a second

frame 4 harnessed to the first.

  Both the first frame 3 and the second frame 4 are supported on the ground, at their rear end,

  by support wheels 5 and 6 respectively 7 and 8. The former

  front end of the first frame 3 is coupled by a provision

  traction device 9 at two points on the lower bars and 11 of the tractor 1. On the rear axle 12 of the first frame 3, a coupling device 13 is provided to which the second frame 4 is articulated. The articulated connection of the first frame 3 to the tractor 1 and of the second

  frame 4 on the rear deck of the first frame 3 is carried out

  pectively by a pivot 14 and a pivot 15. Laterally at a distance next to this pivot 14 or 15, is articulated a push and pull bar 16 or 17 which, during the

  passage of a curve, transmits directional movements

  tion, via a steering lever 18 or 19 and a steering linkage 20 or 21, to the support wheels 5 and 6 of the first frame 3, respectively to

  support wheels 7 and 8 of the second frame 4.

  The steering geometry of the steering system

  tion of the swather 2 is designed so that the support wheels 5 and 6 of the first frame 3, as well as the support wheels 7 and 8 of the second frame 4, roughly follow

  the trace of tractor 1 dragging the machine.

  In the case of the swather shown by the fi-

  gure 1 and arranged for the formation of a central swath, the front rakes 22 and 23 of the frames 3 and 4 are arranged at a greater lateral distance from the respective frames

than the rear rakes 24 and 25.

  According to a preferred embodiment, the frames 3 and 4 of the large capacity swather 2 comprise

  beams which are made with an offset or an

  laterally bending to the far side of the rakes. Due to this inflected or broken execution of the frames 3

  and 4, the new free space is advantageously created.

  required for the coupling and in particular also for the

  tilting lifting of rakes 22 and 24 respectively-

  23 and 25 in their transport position.

  Rakes 22 and 23, arranged at a higher

  long distance from the frames 3 and 4, are connected to these

  tis, according to a preferred embodiment also shown in particular in FIG. 3, by means of lifting support arms 26 and 27 comprising seals

  folding 28 and 29, respectively 30 and 31.

  The support arms 26 and 27 more precisely each consist of a part 32 on the frame side, a middle part 33 as well as a part 34 on the rake side. When the arms 26 and 27 are raised by tilting around their joints 41, 42, they are at the same time folded around

  of their folding joints, either by hydraulic cylinders

  Liques, not shown, either by steering wheelhouses

  which are not represented either.

  As shown in particular by the representation

  tion in broken lines according to Figure 3, thanks to the aforementioned folding of the arms 26 and 27, one obtains, despite the relatively large diameter of the rakes, an acceptable transport height for road travel. The folding of the support arms 26 and 27 around the seals 28,

  29 and 30, 31 can in principle also be used to connect

  shorten the arms to the working position, which allows you to adjust the working width. Rake ground support

  rotary is effected by support wheels 43, 44.

  The rear rakes 24 and 25 are connected to the frames 3 and 4 by means of arrows 35 and 36 and seals 37 and 38. The lifting of the front rakes 22 and 23 as well as the rear rakes 24 and 25 to their transport position , is carried out in a simple way under the effect

  hydraulic cylinders not shown. Rota rakes

  tifs 22 and 24, as well as 23 and 25, of the large capacity swather 2, are arranged relative to each other, so that they allow the formation of a

large central swath.

  In the embodiment according to the figure

  2, all the rotary rakes of the large capacity swather 2 are arranged obliquely one behind the other.

  This arrangement of rakes allows the formation of a large lateral swath. With the exception of the two rotary rakes 39 and 40, which have another connection

  articulated and are driven to turn to the left, the swather according to figure 2 has essentially the same construction as the swather according to figure 1.

Claims (7)

  1. Large capacity swather with several rotors, capable of being coupled to a tractor and comprising,   as rotors, rakes driven in rotation   tower of vertical axes, which are connected in an articulated way   to a frame supported on the ground by rolling wheels   Lement, the rotary rakes each comprising teeth controlled by cam profiles for the swathing of the raked product, characterized in that it is produced   as a large capacity swather (2) with four wheels   tors respectively forming two rotary rakes (22, 24) articulated in an articulated manner, by means of tiltable lifting arms, to a first   frame (3) capable of being coupled to a tractor and taking up   then on the ground by support wheels (5, 6), and two   other rotary rakes (23, 25) articulated   lée, by means of lifting arms lifting by   tilt, to a second frame (4) which also takes up   then on the ground by support wheels (7, 8) and is coupled to the first frame (3).   2. Large capacity swather with several rotors according to claim 1, characterized in that the two frames (3, 4) have support wheels (5, 6   and 7, 8) which are steerable by linkages of di-   rection, the linkage of the first frame (3) being coupled   folded by a push and pull bar (16) to the tractor drawbar (1) dragging the machine and the linkage of the second frame (4) being coupled to the first frame (3) by an additional push and pull bar traction (17).   3. Large capacity swather with several rotors according to claim 1, characterized in that   the liftable carrying arms (26, 27) of the rotary rakes   tifs (22, 23) protruding laterally outward, are made to be foldable by providing at least two folding joints (28, 29 and 30,   31) and can thus be shortened.   4. Large capacity swather   rotors according to one or more of Claims 1 to 3,   characterized in that the frames (3, 4) have   side rails made with offset or lateral inflection   on the far side of the rotary rakes (22, 24 and 23, 25).   5. Large capacity swather   rotors according to one or more of claims 1 - 4,   characterized in that hydraulic motors are pre-   seen as drive means for rotary rakes (22, 24 and 23, 25).   6. Large capacity swather   rotors according to one or more of Claims 1 to 5,   characterized in that it is made as an andai-   neuse forming a central swath, on which the front rakes (22, 23) of the pairs of cooperating rotary rakes   (22, 24 and 23, 25) are arranged more outside laughing.   7. Large capacity swather   rotors according to one or more of Claims 1 to 5,   characterized in that it is made as an andai-   neuse forming a lateral swath, on which the rear rakes of the pairs of cooperating rotary rakes (22, 24   and 23, 25) are each arranged obliquely offset behind   rier the rotary rakes in front of them and their axes of rotation are located in a common imaginary plane oriented obliquely to the containing plane the direction of advancement.