FR2727823A1 - TRANSPOSABLE NIGHT MACHINE IN SEVERAL WORKING POSITIONS - Google Patents

Abstract

The present invention relates to a haymaking machine having an elongated frame which is provided with a device for attaching to a tractor and which comprises housings with which rotors are associated, each of said rotors being rotatably mounted on an axis support around which it is rotated during work by means of a drive shaft housed in the frame, each support axis being equipped at its lower end with a load wheel, its upper end being pivotally mounted in the corresponding housing of the frame and having a lever for adjusting its position in said housing. It is remarkable in that each support axis (20) is guided in the corresponding housing (16) by means of at least two bearings (31 and 32) placed at a certain distance one above the other in bearing bores (33 and 34) integral with the housing (16).

Description

Destruction The present invention relates to a haymaking machine having

  a bi of elongated shape which is provided with a device for attachment to a trac and which has housings with which are associated rotors, each of burps being rotatably mounted on a support axle sniblmcnt vc autor duqud it is rotated during work by means of a drive shaft housed in

  the frame, each support shaft being equipped at its lower end with a wheel

  its upper end being pivotally mounted in the housing conrespon-

  of the frame and having a lever for adjusting its position in said housing.

  it is thus possible to orient the support axes of the rotors and the wheels

  in order to vary the position of the machine with respect to the direction of advancement. For example, said carrier wheels can form angles

  with the frame or be directed obliquely to the right or to the left

  che. In the first position, the frame adopts a position perpendicular to the direction of advancement during work. The fodder moved by the rotors is

  then thrown backwards and spread over a strip of land of a sensi-

  equal to that of the machine. When the load wheels are oriented

  to the right or to the left, the frame is placed in an oblique position

  port to the advancement direction. The rotors then project the fodder obliquely to the right or to the left according to the position of the frame. This makes it possible, for example, to move the fodder away from the edges of the ground and, if there is a gap, with a ditch.

  fence or other obstacle.

  On a known machine, the support axes of the rotors are housed in the

  bearings with a very slight radial clearance so that they can be turned on them-

  same. In addition, these support pins are locked in the axial direction by means of shoulders and rings provided on said axes and their palies. This mode of installation requires constant maintenance to be able to work corectmn Nevertheless, since the machine can undergo important shocks dunrst the ilisatio, which is often exposed to the bad weather and that the maintenance can be neglected during the period intense use, it there may be a quick seizure between the contact surfaces of the support pins and bearings. This can then alter the adjustment of the position of these support pins and the corresponding carrier wheels. The object of the present invention is to propose a haying machine on which the adjustment of the orientation of the support shafts and the load wheels can

  be carried out sustainably without problems.

  For this purpose, an important feature of the invention is that each support axis of a rotor is guided in the corresponding casing of the frame by means of at least two bearings placed at a certain distance from one to the other.

  else in bearing bores secured to the housing.

  Thanks to these bearings, the pivoting of the support axes of the roato dam

  their bearings are significantly improved. The function is more reliably

S ble.

  Sclon another feature of the invention, one of the bearings is located above the drive shaft which is housed in the frame of the machine and other is located below said drive shaft to improve the The bearings which are located above the airfoil preferably have tapered roller bearings arranged so

  the efforts that apply to them, especially when the wheels

  those linked to the support axes pass over unevenness during work.

  Other features and advantages of the invention will emerge from the

  Hereinafter, a non-limiting embodiment of the invention is given in conjunction with the accompanying drawings in which: FIG. 1 is a plan view of a machine according to the invention;

a first working position.

  FIG. 2 represents a view from above of the machine according to the invention in a

second working position.

  - Figure 3 shows a section of a rotor in a vertical plane.

  As can be seen from FIGS. 1 and 2, the machine according to the invention comprises a frame (1) of elongate shape. It consists of a central part (2) and four lateral parts (3 to 6) which are articulated to each other by means of pivots (7) directed in the direction of advancement indicated by the arrow (A). . Two side portions (3, 5) are located on one side of the central portion (2) and two side portions (4, 6) on the other side of said central portion (2). This one is equipped with n

  attachment device (8) to a tractor which is not shown and which serves to

  lift the machine and move it in the direction of travel (A). This device (8) consists of a beam (9) and a bracket (10). The latter is articulated on the beam (9) by means of a substantially vertical axis (11). It has three coupling points (12, 13, 14) for attachment to the tractor. The attachment device (8) could also be constituted by a drawbar in the case of me

trailed type machine.

  The central portion (2) of the frame (1) carries two rotors (15) for finishing, slum

  each side portion carries a single tedding rotor (15). The machine represents

  The scent thus has a total of six rotors (15). It will be understood that the number of rotors (15) may vary depending on the number of side portions that the frame (1) carries. Each of these rotors (15) is associated with a casing (16) of the corresponding central portion (2) or side portion (3 to 6). It emerges from FIG. 3 that each rotor (s15) has a hub (17) which is provided with pins (18). These extend radially and carry forks (19). said

  hub (17) is mounted so as to be rotatable on a support shaft (20) sensi-

  vertically. For rotational drive of the rotors (15), each hub (17) has a ring gear (21) which meshes with a pinion (22) in the housing (16) corresponding Each of these pinions (22) is mounted on mun driving shaft (23) which is housed in the central part (2) and the corresponding lateral part (3 to 6) of the frame (1). These different toothed shafts (23) are connected to each other by gimbals or fingertips located at the pivots (7). They are themselves driven in rotation by rarbre PTO of the

  tractor by means of an in-feed drive shaft.

  Each support shaft (20) of a rotor (15) carries at its lower end a carrier wheel (24) which can roll on the ground. This wheel (24) is mounted on a column (25) integral with a bearing (26) which is fixed on the support axis (20) by pin (27). The upper end of each support shaft (20) is fixed in a

  sleeve (28) by means of a pin (29). Because of its size, this man-

  chon (28) is easy to machine. It could however also constitute an integral part of the support axis (20). This sleeve (28) has an opening (30)

  for the passage of rare training (23).

  The support shaft (20) is mounted in the housing (16) by r dia of this sleeve (28). It is guided by means of at least two bearings (31 and 32) placed at a distance one above the other in bearing bores (33 and 34) integral with the housing (16). One (31) of these bearings is located above the rare drive (23), its bearing (33) being provided at the upper wall of the housing (16). The other bearing (32) is below the shaft (23). Its bearing (34) is also connected to the upper wall of the housing (16). These bearings (31 and 32) facilitate the rotation on itself of the support axis (20). They require virtually no maintenance. Thanks to their arrangement, maintaining

  support (20) is improved.

  The bearing (31) is advantageously a tapered roller bearing (35) located between two rings (36 and 37). 1 is so telescope mounted that the widest side flank (38) of its outer ring (36) is directed upwards and bulges against a shoulder (39) provided in the bearing (33) and that the lateral flank width (40) of its inner ring (37) is directed downwards and abuts against a

  shoulder (41) support raxe (20) or its sleeve (28).

  The bearing (32) which is located below the drive shaft (23) is a ball bearing (42) with two rings (43 and 44). I is mounted such that the lateral flank (45) of the outer ring (43) is directed downwards and abuts against a stop ring (46) which is mounted in the bearing (34) of the housing (16). and that the lateral flank (47) of the inner ring (44) is directed upwards and abuts against

  a shoulder (48) of the support shaft (20) or sleeve (28). Thanks to this

  The tapered roller bearing (31) supports the upward forces when the carrier wheel (24) passes over uneven ground. On the other hand, the ball bearing (32) prevents the support shaft (20) from disengaging

  downwards, especially when the carrier wheel (24) does not rest on the ground.

  Each sleeve (28) or support shaft (20) has a lever (49) for adjusting its position in the bearings (33 and 34). Said lever (49) extends out of the housing (16) through a lateral opening. On the rotors (15) of the two extreme lateral parts (5 and 6) of the frame (1), the support pins (20) can pass through the upper wall of the housings (16). The levers (49) can then be fixed on the parts of the axes (20) which extend outside said casings (16). All the adjustment levers (49) of the support pins (20) of the rotors (15) of the machine are connected to a

  control rod (50) which is substantially parallel to the frame (1). The central part

  trale (2) of the frame (1) carries a hydraulic cylinder (51) whose rod is articulated on the control rod (50). This hydraulic cylinder (51) moves said rod (50) to the right or to the left for simultaneous adjustment of the position of all the support pins (20) and the load wheels (24) of the

machine.

  According to another embodiment which is not shown in the drawings

  the control rod (50) can additionally be connected to a set of action-

  which is articulated on the bracket (10) of the attachment device (8) of the frame (1). In this case, said bracket (10) causes movements of the rod (50) when it rotates itself about its axis of articulation (11) with the beam (9) in turns. In this way, the sleeves (28) and / or the support pins (20) can be rotated in the bearings (31 and 32) so that they orient

  the load wheels (24) according to the direction of travel of the tractor.

  During the work, the haying machine according to Figure 1 is coupled to a tractor that can move in the direction (A). The rotors (15) are rotated about their respective support axes (20) so that they rotate in pairs in convergence at the front (arrows F and F). During this rotation, their forks (19) pick up the plants that are on the ground, move them backwards between the convergent rotors (15) and spread them out again.

  behind the machine while causing their turnaround. In the first posi-

  1, the frame (1) and the rotors (15) lie on a line substantially perpendicular to the direction of advance (A). The

  rotors (15) then project the plants in the opposite direction to the advan-

  cement (A), so that they fall almost on the same band of land.

  rain. The load wheels (24) are locked in a direction in which they are substantially perpendicular to the frame (1). This blocking is ensured by means of the hydraulic cylinder (51) which immobilizes the rod (50). This in turn blocks the support pins (20) of said carrier wheels (24) by means of levers (49) and sleeves (28). It may optionally be provided a mechanical locking device between the frame (1) and the rod (50) to better define the different

positions of the latter.

  The machine can be transposed to the second working position

  2, by actuating the hydraulic cylinder (51) so that it extends. He then moves the rod (50) to the right side of the machine. This one

  drives all the levers (49) which rotate the sleeves (28) and the sup-

  ports (20) in the bearings (31 and 32). Said axes (20) then orient the carrying wheels (24) towards the left side of the frame (1) until they form angles ac of about 25 relative to their initial position. However, given

  that at work the carrying wheels (24) remain oriented in the direction of advance-

  (A), the assembly of the frame (1) rotates about the articulation axis (11) of the disc

  positive hooking (8) and is placed in an oblique position relative to the direction of advance (A). The rotors (15) are then also on a

  oblique line and move the plants at an angle to the direction of advance

cement (A).

  To return to the first working position, it is sufficient to control the hydraulic cylinder (51) so that it shortens itself and brings back the rod (50), the levers (49), the sleeves (28) and the support pins ( 20) with the carrier wheels (24) in their initial position. The machine can also be transposed to a third working position which is not shown. For this, you have to order

  the hydraulic cylinder (51) when the machine is in its first working position.

  vail, so that it is shortened. He then pulls the rod (50) towards the left side.

  of the machine, which rod rotates the sleeves (28) and / or the support pins (20) in the bearings (31 and 32) so that the carrier wheels (24) are oriented towards the right side of the frame (1). At work, it then rotates about the hinge axis (11) and is placed in an oblique position which is reversed relative to that of the second working position described. The return to the first position is achieved by operating the hydraulic cylinder (51) so that it extends. We will choose the second or the third working position in

  function of the side towards which one wishes to move the plants.

  It is obvious that the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible,

  particular with regard to the constitution of the various elements or

  technical equivalents, without departing from the scope of protection.

Claims (8)

claims   1. Haymaking machine having an elongated frame which is provided with a   positive for attachment to a tractor and which includes casings which are associated with rotors, each of said rotors being rotatably mounted on a substantially vertical support axis around which it is rotated during work by means of a drive shaft housed in the frame, each support shaft being equipped at its lower end with a carrier wheel, its upper end being pivotally mounted in the corresponding casing of the frame and having a lever for adjusting its position in said casing, characterized in that that each support shaft (20) is guided in the housing (16) corresponding by means of at least two bearings (31 and 32) placed at a distance one above the other in bearing bores   (33 and 34) secured to the housing (16).   2. haymaking machine according to claim 1, characterized in that one (31) of the bearings (31 and 32) is located above the drive shaft (23) and another (32) bearings (31 and 32) is below the tree drive (23).   Haymaking machine according to Claim 2, characterized in that the bearing (31) which is located above the drive shaft (23) is a   tapered roller bearing (35) with two rings (36 and 37).   4. Haymaking machine according to claim 3, characterized in that the tapered roller bearing (31) is mounted so that the widest side flank (38) of its outer ring (36) is directed up and   against a shoulder (39) provided in the bearing (33) of the housing (16).   Haymaking machine according to Claim 3 or 4, characterized in that the tapered roller bearing (31) is mounted in such a way that the widest lateral flank (40) of its inner ring (37) be directed to the   low and abut against a shoulder (41) of the support shaft (20) or its man- chon (28).   6. Haymaking machine according to claim 2, characterized in that the bearing (32) which is located below the drive shaft (23) is a   ball bearing (42) with two rings (43 and 44).   7. haymaking machine according to claim 6, characterized in that the bearing (32) ball (42) is mounted so that the lateral flank (45) of the outer ring (43) is directed downwards and stop against a ring   stop (46) which is mounted in the bearing (34) of the housing (16).   8. Haymaking machine according to claim 6 or 7, characterized in that the ball bearing (32) is mounted so that the lateral flank (47) of the inner ring (44) is directed towards the up and up against a   shoulder (48) of the support shaft (20) or the sleeve (28).