FR2690471A1 - Tractor towed drainage ditch clearing equipment - comprises tractor power take off connected arm with clearing tool of two adjustable powered knife equipped angled discs on end - Google Patents

Abstract

The equipment, consists of an arm (1) connected to the power take off and an oil tank, for clearing drainage ditches.It can be towed behind and offset from the centreline of a tractor (2). On the end of the arm is the cleaning tool (3) comprising two discs (5,5') set at the angles of the ditch sides, with knives (6) at the bottoms. A variable speed hydraulic motor powers the discs, adjustable by jack and rod assembly of two connected double arms. Debris is removed by an Archimedes screw. Available with bladed discs or loading chute. USE/ADVANTAGES - Easy to operate, rapid and efficient results.

Description

The present invention relates to a curator for linear ditches.

  of linear ditches intended to clear a ditch already open but silted and cluttered with vegetation by reforming the initial profile by stripping and removing sludge, plant waste and other parts

in excess.

  In the oldest times when bread was made on each farm, the ditches were carefully maintained by the peasants since the vegetation of brambles and young trees which

  encumbered them, served to light the ovens.

  Due to technical progress, this work has now been abandoned and mechanical curers had to be developed to recalibrate the ditches and

  rid them of excess parts.

  The oldest model of cureuse, almost abandoned today included a short worm placed sideways on a tractor running parallel to the ditch and orientable according to the profile to be given.

ditch at a time.

  This cureuse has been gradually replaced by more efficient models capable of ensuring the cleaning of the ditch in a single pass and, for the most sophisticated models, also able to

  if necessary serve for digging.

  Among these curers, mention may be made of machines comprising, on the one hand, a support chassis capable of being coupled laterally to a tractor and containing hydraulic control members connected to the power take-off of the tractor, as well as a reserve of oil, and on the other hand, a cleaning tool mounted at the end of the support frame and cooperating with organs for extracting excess parts Machines of this type adapted to local needs, that is to say which may be suitable for small or medium-sized ditches, which are currently proposed, have the major disadvantage of working perpendicular to the ditch and thus forcing the user to make multiple maneuvers in a driving position

uncomfortable.

  The object of the present invention is to propose a linear ditcher capable of remedying these drawbacks, that is to say of easy handling for the user, while making it possible to quickly carry out the work of cleaning and recalibration. According to the invention, this ditch cleaner is characterized in that the cleaning tool is

  consisting of two discs mounted obliquely opposite-

  ment with respect to the vertical, so as to define, between them an angular space corresponding to the profile of the ditch to be cleaned and comprising at their periphery a

  series of knives extending radially outwards

  laughing, by which they attack the ditch to be treated.

  The essential characteristic of the invention

  tion is therefore linked to the configuration of the cleaning tool, and in particular to the oblique position of the discs which allows the user to practice a ditch corresponding to the standards established by the Departmental Direction of Equipment, while quickly clearing the excess parts and by cutting directly the edge of the ditch. According to the invention, each of the discs is preferably driven individually by a variable speed hydraulic motor switched on and controlled using the PTO

tractor exterior.

  In order for the machine according to the invention to function satisfactorily, it is

  of course necessary to be able to adjust continuously-

  the working depth; To this end, there is provided, in accordance with the invention, an adjustment jack by means of which the two knife discs

are connected to the support frame.

  According to another characteristic of the invention, the spacing between the two discs, defining the angular space, can be adjusted at

by means of a control cylinder.

  This is an essential characteristic

  tielle of the invention making it possible to adapt the machine to different types of ditch and, if necessary, to more or less congested ditches, for which it may be essential to pass a second time the

machine at a different width.

  According to the invention, the control cylinder preferably acts on the discs by means of a linkage formed by the association of two double arms respectively connected by two link arms so as to be able to vary their spacing without modifying their

  tilt relative to the vertical.

  It is clear, in accordance with the characteristics

  ques aforementioned that, during the linear movement of the tractor, the knife discs plunge into the ditch to be cleaned and eject the rearward

  sludge, plant waste and other excess parts.

  Extraction devices allow

  resume and eliminate these excess parts.

  According to another characteristic of the invention, these extraction members are constituted by an Archimedes screw, one end of which plunges into the ditch to be treated while the opposite end

  cooperates with external evacuation bodies

  laughing. According to a first variant of the invention, the evacuation members towards the outside of the excess parts consist of a paddle disc; the rotation of this disc makes it possible to project the products in the desired direction to achieve their

  spreading on land bordering the ditch.

  According to a second variant of the invention, the bodies for discharging the products to be treated are constituted by a cooperating loading chute

  with a trailer coupled to the support frame.

  This second variant makes it possible to spread or store the excess parts in a place

  any choice left to the user.

  It should be noted that each movement of the ditch cleaner in accordance with the invention is hydraulically controlled and controlled, and that the powers and speeds of all of its constituent elements are variable depending on the type of terrain and the

  characteristics of the ditch to be treated.

  The characteristics of the ditch cleaner which is the subject of the invention will be described in more detail with reference to the accompanying drawings, in which: Figure 1 is a schematic rear view of the ditch cleaner, Figure 2 is a side view of the ditch cleaner, Figure 3 shows the articulation of the discs

knives on the support frame.

  According to FIGS. 1 and 2, the ditch excavator is schematically made up of a support frame 1 laterally coupled to a tractor 2 and of a cleaning tool 3 which is mounted at the end of the support frame 1 opposite to the tractor 2 and cooperates with bodies 4 for extracting sludge, plant waste and other excess parts. These bodies will be described in more detail below.

exposed.

  The support frame 1 contains hydraulic components, not shown, which are connected to the external power take-off of the tractor 2, as well as a

oil reserve.

  According to Figures 2 and 3, the cleaning tool 3 consists of two discs 5, 5 'mounted opposite one another, obliquely to the vertical x-x', driven individually by of variable speed hydraulic motors 8, 8 ', and fitted on their periphery with a series of sharp knives 6 extending radially outwards by which they attack the ditch to be treated. The knife discs 5, 5 ′ define between them an angular space 7 (FIG. 1) which corresponds to the V profile of the ditch to be cleaned. The width 1 of this space 7 can be adjusted in a manner which will be described in more detail. in the rest of this talk. According to Figure 1, the knife discs 5, 'are connected to the support frame by means of a support cylinder 9 shown schematically so as to be able to continuously vary the working depth h below the ground surface y -y '. According to FIG. 3, the knife disks 5, ′ are, moreover, connected to the support frame 1 by means of a linkage 10 constituted by the association of two double arms 11, 11 ′, on the one hand and 12, 12 'on the other hand, articulated one on the other in their middle part 13, 14 and connected to each other

by two link arms 15, 15 '.

  A double-acting control cylinder 16 acts directly on the double arm 11, 11 'and also controls the double arm 12, 12' via

link arms 15, 15 '.

  It is therefore possible for the user to separate or bring the knife disks 5, 'closer together, and therefore to vary the width 1 of the angular space 7 while keeping the spacing between

the discs 5, 5 '.

  According to FIG. 2, the organs for extracting excess products mainly consist of an Archimedes screw 17, one end of which 18 plunges into the ditch to be treated, directly behind the knife disks 5, 5 'in the direction d advancement A of the tractor 2, and thus makes it possible to ensure the displacement of the excess products upwards according to the arrow B. According to the variant shown in FIG. 2, the Archimedes screw 17 cooperates by its second end 19 opposite to the first end 18 by which it plunges into the ditch to be treated with a loading chute 20 via which the excess products can be discharged

  in a trailer 21 coupled to the support frame.

  In accordance with a second variant not shown, the excess products reaching the second end 19 of the worm 17 can also be poured onto a pallet disc whose rotation allows them to be projected in the desired direction.

Claims (3)

CLAIMS) Linear ditch cleaner intended to clear an already open but silted and cluttered ditch by vegetation by reforming the initial profile by stripping and removing sludge, plant waste and other excess parts, ditch cleaner comprising, on the one hand , a support frame (1) capable of being coupled laterally to a tractor (2) and containing hydraulic control members connected to the power take-off of the tractor, as well as an oil reserve, and on the other hand, a cleaning tool (3) mounted at the end of the support frame (1) and cooperating with extraction members (4) of the excess parts, ditch cleaning machine characterized in that the cleaning tool (3) is constituted by two discs (5, 5 ') mounted facing obliquely to the vertical (x-x'), so as to define, between them an angular space (7) corresponding to the V-profile of the ditch to be cleaned and comprising on their periphery e a series of knives (6) extending radially outwards, by which they attack the ditch to be treated. 2) Ditch excavator according to claim 1, characterized in that each of the discs (5, 5 ') is driven individually by a variable speed hydraulic motor (8, 8').   3) Ditch cleaner according to any one   claims 1 and 2, characterized in that the   discs (5, 5 ') are connected to the support frame (1) by means of an adjustment cylinder (9) so as to allow the depth of work (h).   ) Ditch cleaner according to any one   claims 1 to 3, characterized in that   the spacing between the two discs (5, 5 '), defining the angular space (7), can be adjusted at   by means of a control cylinder (16).   ) Ditch excavator according to claim 4, characterized in that the control cylinder (16) acts on the discs (5, 5 ') by means of a linkage (10) constituted by the association of two double arms (11, 11 ', 12, 12') respectively connected by two link arms (15, 15 ') so as to be able to vary their spacing without modifying their   tilt relative to the vertical (x-x ').   6) Ditch cleaner according to any one   claims 1 to 5, characterized in that the   extraction members (4) excess parts consist of an Archimedes screw (17) one end (18) of which dips into the ditch to be treated while the opposite end (19) cooperates with members to the outside.   ) Ditch excavator according to claim 6, characterized in that the evacuation members towards the outside of the excess parts are constituted by a paddle disc whose rotation makes it possible to   project the products in the desired direction.   8) Ditch excavator according to claim 6, characterized in that the evacuation members towards the outside of the products to be treated are constituted by a loading chute (20) cooperating with a trailer (21) coupled to the chassis support (1).