1. A device for fastening an anti-skid device onto a vehicle wheel, comprising an anti-skid chain, which is held in position by a plurality of holding brackets fastened to a holding plate in star formation; a tension element, which is joined to a clamping device specified for winding up or for clamping; a suspension device introduced on the free end of the tension element for joining the free end of the tension element to an adapter 39 onto a wheel bolt,
is hereby characterized in that
the tension element can be joined to an adapter on a wheel bolt in such a way that the direction of tensile force of the tension element lies essentially in the axis of the wheel bolt.
2. The device according to claim 1, further characterized in that for the bracket, the holding plate has a central circular opening that is disposed in a circular recess of the holding plate, and in that the clamping device is placed on a disk * that can be inserted in the recess and the tension element passes through the disk in a bore, which bore lies radially outside the center of symmetry Z of the disk, wherein the radial distance R of the bore from the wheel center Z corresponds to the radius of the hole circle in the wheel rim, in such a way that the tensile force of the tension element engages or acts axially on the wheel bolt.
3. The device according to claim 2, further characterized in that the suspension device is formed so that it can be attached without tools to an adapter joined to the wheel bolt.
4. The device according to claim 3, further characterized in that the adapter has an axial length I that is similar to the head of the wheel bolt and, placed on the wheel bolt, does not pass through a plane E that is formed by the outer edge of the wheel rim.
5. The device according to claim 3, further characterized in that the suspension device has a keyhole-like opening, which permits the connection of the tension element to the adapter on the wheel bolt without tools.
6. The device according to claim 2, further characterized in that the disk with the clamping device can be rotated in the opening on the holding plate.
7. The device according to claim 2, further characterized in that a ratchet, a winch, or another device exercising tension on the tension element is utilized as clamping device.
8. The device according to claim 1, further characterized in that the free end of the tension element is rotatably connected to a rod-shaped connection element, which connection element is specified to engage on two wheel bolts lying diagonally opposite, approximately or exactly.
9. The device according to claim 8, further characterized in that the connection element is formed so that it can be suspended or moved onto two adapters fastened onto two wheel bolts.
10. The device according to claim 9, further characterized in that the connection element has on its ends a c-shaped cross section, and the two edges of the c-shaped connection element are specified to engage in circumferential grooves on the adapters.
11. The device according to claim 10, further characterized in that catch means are formed on the connection element for locking the connection element on the adapters.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus for excavating and transporting away materials, in particular soil material, with at least one excavation device (12, 14) which can be rotated about an axis of rotation (y) in a direction of rotation (u) and with a longitudinal conveyor (18) for transporting away excavated material (41), characterized in that the excavation device comprises an impeller wheel (12, 14) with a conically extending guide surface (20) arranged about the axis of rotation (y) in a rotationally symmetrical manner and with guide vanes (22) which project radially from the conical guide surface (20) and which form an acute angle with respect to the axis of rotation (y).
2. The apparatus as claimed in claim 1, characterized in that the conically extending guide surface (20) of the impeller wheel (12, 14) has its narrowed end adjoining a conveyor belt (18) and forms a run-off surface for excavated material (41).
3. The apparatus as claimed in claim 1, characterized in that the excavation device comprises two impeller wheels (12, 14) with a conveyor belt (18) arranged between them.
4. The apparatus as claimed in claim 1, characterized in that the guide vanes (22) are bounded by two lateral edges (24, 26) which are parallel to one another, and the width of the guide vanes (22) corresponds substantially to the width of the conically extending guide surface (20).
5. The apparatus as claimed in claim 4, characterized in that the guide vanes (22) are twisted with respect to the axis of rotation (y) by an angle such that, as viewed in the running direction (u), the outer lateral edge (26) leads the inner lateral edge (24).
6. The apparatus as claimed in claim 2, characterized in that the outer lateral edge (26) of the guide vanes (22) adjoins a fixed guide plate (30), at least in a region below the conveyor belt (18).
7. The apparatus as claimed in claim 6, characterized in that the guide plate (30) terminates at a distance (e) above the conveyor belt (18) by way of an upper edge (31) situated parallel to the conveying plane of the conveyor belt (18), and a strip-like cover plate (33) extends from the edge (31) to the lower-lying conveyor belt (18).
8. The apparatus as claimed in claim 6, characterized in that a vane covering (34), which covers the guide vanes (22), projects inwardly from a peripheral edge (32) of the guide plate (30).
9. The apparatus as claimed in claim 1, characterized in that the guide vanes (22) are curved with respect to a cross section situated perpendicularly to the lateral edges (24, 26), and the curved surface of the guide vanes (22) points with its concave curvature in the direction of rotation (u) of the impeller wheels (12, 14).
10. The apparatus as claimed in claim 1, characterized in that the guide vanes (22) are provided at their free radial end with a vane part (38) which projects substantially at a right angle with respect to the radial direction of the guide vanes (22) in the running direction (u) of the impeller wheel (12, 14).
11. The apparatus as claimed in claim 1, characterized in that vane teeth (28) project laterally outwardly from the guide vanes (22).
12. The apparatus as claimed in claim 1, characterized in that the impeller wheels (12, 14) are each assigned an individually controllable motor (40).