FR2579403A1 - MULTI-ROTOR FLOOR WORKING TOOL WITH HORIZONTAL AXIS - Google Patents

Abstract

THE FIELD OF THE INVENTION IS THAT OF SOIL WORKING TOOLS WITH SEVERAL SEPARATE ELEMENTS. THE PROBLEM IS TO MAKE SUCH A TOOL WHICH ALLOWS DEEP SOIL WORK. THE OBJECTIVE IS ACHIEVED ACCORDING TO THE INVENTION USING A TOOL OF WHICH EACH ELEMENT 10, 11, 12 INCLUDES AN OPTIONAL CUTTING DISC 16 FOLLOWED BY A CUTTER 17, ITSELF FOLLOWING A SHAPED ROTOR 18 OF HELICOIDAL BLADES IN ROTATION AS REPRESENTED. EACH BAND OF LABOR IS TRANSFERRED IN DIRECTION B, BACK TO THE PREVIOUS ROTOR IN THE VACUUM LEFT BY THE PREVIOUS BAND. THE INVENTION FINDS A PREFERENTIAL APPLICATION FOR TILLING FIELDS OF CHAUMES.

Description

"Tillage tool with several rotors ordered with horizontal axes"

  The present invention relates to the tools

  tillage, and in particular, but not exclusively

  the tools for incorporating straw into the soil. In case the burning of the straw

  had to be banned, there is the problem of

  straw or cut stubble of which

  we would then dispose in large quantities. Their in-

  troduction in the soil during plowing is pos-

  sible, but in anaerobic condition the returned straw layers continue to exist for some time. It would be necessary to work the soil to a depth of 15 cm from the surface to intimately mix the cut straw with the 15 cm

  of land, but for the moment there is no

  til to carry out such work.

  An object of the present invention is to

provide such a tool.

  More specifically, the tool according to the present invention consists of several distinct elements of tillage, each of said elements comprising

  a coulter followed by a rotor, the rotors of said ele-

  distinct elements being staggered over the width of the tool so as to allow the overturning of the plowed strip cut by each of said elements, and its transfer in the trench dug by the adjacent work unit

who is before.

  Advantageously, the tool comprises a

  soc or a cutting disc placed in front of the coulter.

  Rotors in the form of helical blades

  are, in a preferred embodiment,

  trailed in rotation around substantially horizontal axes

  zontals above the ground, and directed with tilting towards the front of the tool, for example so as to form an angle of between 10 and 20 with respect to the axis

  of the tool, and preferably an angle of 14.

  Advantageously, the rotors are of conical shape, with a diameter decreasing towards their front end; in a preferred embodiment, the rotors have a trunk hub of

  cone with an apex angle of about 30.

  The coulter is advantageously a rasette in heart. In one embodiment of the invention, the rotor blades consist of several rods

  adequate dimensions and arrangements which extend

  tooth radially outward from the hubs

rotors.

  In this case, the inner ends of the rods are advantageously mounted on a stack of collars surrounding the hub, each of said collars being rotatable relative to the hub between two limit positions determined by two sets of stops mounted at appropriate locations on the hub. said stems being arranged to form a helix of a given direction when the hubs engage with a first one of said abutment sets, and a propeller of the opposite direction when the hubs engage.

  with the second of said stop sets.

  Other features and advantages of the invention will appear on the following reading of a preferred embodiment, given simply to

  illustration, and the accompanying drawings in the-

  which: - Fig.1 is a schematic plan view

  (and not to scale) of a tool according to the present invention.

  tion; - Fig.2 is a front view of the front of one of the rotors in the direction of its axis of rotation; FIG. 3 is a perspective view of

one of the rasette in heart.

  Referring now to the drawings, FIG. 1 schematizes the relative positions of three tillage elements 10, 11, 12 stages.

on the width of the tool 14.

  Each soil working member comprises a plow disc 16 (optional) mQ by the ground, followed by a "heart cutter" 17 (or winged plow), itself followed by a rotor 18 with helical blades 'and

externally driven.

  As can be seen in the drawings, the rotors 18 each have a truncated cone hub carrying three helical blades, the hub

  and the blades being conical. The angle at

puts the hub is about 300.

  The opening of the blades at the far end

  of each rotor is typically 90 cm, for a disk-to-disk distance of

56 cm.

  The rotational axes of the rotors are sen-

  horizontal, and have an angle of

  140 relative to the direction of movement A of the tool. However, the inclinations of, by

  for example, 10th to 200th are probably acceptable.

  In another embodiment (not

  presented) each rotor hub carries only two

  helical blades. During the operation of the

  til, for example in a thatch field,

  16 enter the soil, through the straw,

  and the rasettes in heart 17..work under the ni-

  calf from the ground to the depth of the furrow so as to

cut the ground horizontally.

  The rotors 18 are rotated

  the tractor shaft in the opposite direction to the

  watch (as seen from the back) & speed

  it is between 60 and 100 rpm. They ensure the lateral transfer of tillage strips cut by the associated disk and coulter into the trench left behind.

  by the previous plowing band as indicated by the arrows

  B. During this transfer, it also happens

  a mixing, turning and plowing action.

  The embodiments of the tool

  represented are also suitable for all

  similar background to tillage, so that the term tillage tool 'should be interpreted broadly.

  When reciprocating plowing is

  The helical blades may be replaced by a network of rods of suitable size and arrangement extending radially outwardly from the hub of the rotors. The inner ends of said rods are mounted on a stack of collars surrounding the hub, each of said collars being

  rotatably mounted on the hub between posi-

  limits determined by two sets of stops

  folds properly on the hub.

  For the plowing operation in the opposite direction, the frame carrying the rotors 18 is turned 180 from

  way of imposing a movement of meaning contrary to the ban-

  plowing. At the same time, in order to complete the

  ration of cdaim ent. of plowing, the direction of rotation of the rotor drive arbies is reversed, and the forces exerted by the soil on the ends

  rotor rods cause the

  licoldale of said rods is modified until

  reverse step by the play of the rotation of the col-

  liers from the first of said abutment sets to the second of said abutment sets. This pitch reversal system is particularly suitable for two-blade rotors

already mentioned previously.

Claims (7)

  1. Tillage tool (14) of the type comprising several distinct elements (10, 11, 12) of the ground, characterized in that each of the elements (10, 11, 12) comprises a coulter (17) followed by a rotor (18), the rotors (18) of said discrete elements (10,11,12) being staggered across the width of the tool (14) so as to allow the plow band cut by each of said elements to be turned over, and   its transfer into the trench dug by the working element above.   2. Tool according to claim 1, characterized   characterized in that it includes a soc or a disc of cut (16) in front of the coulter (17).   30. Tool according to any one of   claim 1 or 2, characterized in that said   rotors (18) in the form of helical blades are   born in rotation about substantially horizontal axes above the ground, and directed with the front of the tool.   40. Tool according to any one of the   1, 2 or 3, characterized in that said rotors (18) are of conical shape, and have a   diameter which decreases towards their front end.   5. Tool according to any one of the   previous indications, characterized in that the coultre (17) is a winged ploughshare.   6. Tool according to any one of the   prior art, characterized in that the blades of the rotor (18) consist of several rods of adequate dimensions and arrangements which extend radially outwardly from the hubs of the rotors.   7. Tool according to claim 6, characterized   characterized in that the inner ends of said rods are mounted on a stack of collars surrounding   the hub, each of said collars being movable in rotation   relative to the hub between two   moths determined by two sets of stops mounted at appropriate locations on the hub, said rods being arranged to form a helix of a given direction when the hubs engage with a first of said sets of stops, and according urnehelice of the senses opposite when the hubs engage with   the second of said sets of stops.