Fastening device designed to fasten a collecting container swiveling around an axis at an end of a mobile arm, the collecting container having an opening making it possible to collect solid remains during the swiveling, the fastening device comprising:
- a. at least one pivot-member assembled so as to swivel around the axis on the end of the mobile arm and including:
- at least one first transverse arm fastened to the pivot-member and provided with a first fixing means;
- and
- at least one second transverse arm fastened to the pivot-member and provided with a first group of bores directed in a direction parallel to the axis;
- b. at least first and second fasteners fixed onto the collecting container:
- the first fastener being provided with a second fixing means configured to work in conjunction with the first fixing means of the pivot-member, so that, when the first fixing means and the second fixing means come into contact with each other, the second fixing means is configured to be used as a guide and then as a stop to the first fixing means when the pivot-member swivels around the axis in a given direction of rotation;
- the second fastener being provided with a second group of bores turned in a direction parallel to the axis, placed so that when the pivot-member swivels in the given direction of rotation until the first fixing means is configured to come up against the second fixing means, such that the bores of the first group and the bores of the second group are substantially aligned in a common axial direction;
- c. a pin, designed to be inserted and to slide in the alignment of the bores of the first and second groups, in order to fix the collecting container onto the end of the mobile arm;
- characterized in that:
- d. the first group of bores includes a number m of bores, and the second group of bores includes a number n of bores, wherein m and n are integers equal to or greater than 1, with a product of m*n being strictly greater than 1;
- e. when the bores of the first and second groups are substantially aligned, there exists at least one central bore of one of the first and second groups, the at least one central bore being conical and surrounded by a small diameter peripheral bore and a large diameter peripheral bore of the other of the first and second groups, the small diameter peripheral bore and the large diameter peripheral bore being cylindrical and having different diameters;
- f. the pin is a twin-cylindrical shaft with a conical shoulder including:
- f1) first and second cylindrical parts, the first cylindrical part having a diameter slightly lower than a diameter of the small diameter peripheral bore in which the first cylindrical part is designed to slide, and the second cylindrical part having a diameter slightly lower than a diameter of the large diameter peripheral bore in which the second cylindrical part is designed to slide;
- f2) and a conical intermediate part, a slope of which is similar to a slope of the central bore.