FR2531600A1 - Toolholder device for a rotary soil-cultivating machine. - Google Patents

Abstract

The toolholder device 1 has in cross-section the shape of a U with a recessed central part 2 and projecting wings 3. The upper end 4 of a soil-cultivating blade 5 is fitted over a particular length into the recessed part 2. A transverse bolt 6 provides the fastening. The fitting of the blade 5 into the toolholder 1 can be single or multiple. The invention is used for fastening blade-shaped tools to rotating supports of rotary soil-cultivating machines.

Description

The invention relates to rotary soil working machines and, more particularly, the attachment of blade-shaped tools on the rotary supports presented by these machines.
There are two types of rotary tillage machines
a) with vertical blades distributed on
rotating turrets with vertical axis or
slightly oblique to the solo On these
machines, the blades outline a circumference
around the turret blade and
generate around this one cylinder at one
cone;
b) with vertical blades distributed perpendicular
lie at the axis and in helix on an oylindri tree
as motor, arranged horizontally.

 On such machines, it happens that your blades are very stressed, for example when encountering stones or hard unbelievable bodies. Under these conditions, the fixing of the blades on the drive turret9 following the CaS9 is very difficult to ensure with officactié.

The object of the present invention is to remedy this drawback and to this end it proposes a tool-holder device ensuring9 whatever the conditions of use, a particularly effective maintenance of blades on rotary agricultural machines for working the soil.
According to the invention, the tool holder is provided in such a way that the blade to be held and itself interpenetrate in such a way that the shearing force on the bolts or screws serving to fix the blade on the holder tool is practically zero. To this end, the connection between the tool holder and the blade can be constituted by a single installation, or by a multiple installation provided for example by a set of rectangular, triangular or sinusoidal slots.

To make the fixing device according to the invention clearly understood, preferred embodiments will be described below with reference to the appended schematic drawing in which
Figure 1 is an elevational view of a blade support according to the invention, simple embedding, and the blade which it ensures the maintenance
Figure 2 is a horizontal sectional view of the blade support of Figure 1 and blade associated therewith
Figure 3 is a horizontal sectional view of a multi-recessed blade support the by rectangular slots
Figure 4 is a horizontal sectional view of a blade holder with multiple recesses by teeth; and
FIG. 5 is a view in herisostal shots of a blade support with multiple embedding by sinus grooves.

 Aunt Figures 1 and 2 there is shown in 1 the blade holder, consisting of a vortical support pidoe in the form of a slide with a central oreused part 2 and wings 3 projecting in the hollow part 2 of the support 1 is built up, over a certain length, the upper end 4 of a vertical blade 3 for working the soil, and a transverse bolt 6, which passes through openings on the face of the support 1 and of the blade 5, ensures fixation.

 It is understood that, if the blade 5 encounters a resistant obstacle, such as a stone, during its rotary soil-working stroke, it will be perfectly kept in a graceful position when it is embedded in the hollowed-out part 2 of the support, without causing d shear force on bolt 6.

 In FIG. 3, the hollowed-out part 7 of the support 8 has rectangular projections 9 on which engage notches of corresponding shape 10 presented by the blade 11. A multiple embedding of the blade 11 is thus carried out in the support 8 which further improves the maintenance of the blade.

 In FIG. 4, the multiple embedding of the blade II in the support 8 is achieved by the engagement of teeth 12 carried by the blade in teeth 13 of corresponding pitch carried by the support 8.

In Figure 5 multiple embedding is performed
by mutual engagement of sinusoidal slots 14 carried by the blade II and 15 carried by the support 8.

 It will be understood that the above description has been given by way of example, without limitation, and that additions or constructive modifications could be made thereto without departing from the scope of the invention defined by the claims which follow.

Claims (5)

 R E V E N D I C Q # .T I O N S.  the blade-holder device for a rotary soil-working machine, characterized in that it has over at least a portion of its height a hollowed-out central part (2) in which the blade (5) which is embedded therein is fixed by bolting.  2. Device according to claim 1, characterized in that the embedding of the blade in the blade holder is a simple embedding.  3. Device according to claim 1 characterized in that. the embedding of the blade in the blade holder is a multiple embedding.  4. Device according to claim 3, characterized in that the multiple embedding is effected by rectangular slots (9,10) carried by the faces in contact with the blade holder (8) and the blade (11) o  5. Device according to claim 3, characterized in that the multiple embedding is effected by teeth (12,13) presented by the faces in contact with the blade holder (8) and the blade (11).