OSCILLATING AXLE DEVICE IN PARTICULAR FOR USE WITH A WHEELSET FOR THE TRANSPORTATION OF HEAVY LOADS

Abstract: An oscillating axle device, for use with a wheelset for the transportation of heavy loads, comprising an axle (1) which at each end is provided with at least one wheel, said axle being pivotably supported by means of a pin (4) mounted in a bracket (3) connected to a frame. The insert end of said pin is provided with screw-thread (6) for fixing the pin into the bracket. Said pin is provided with a conically section (7) extending from the screw thread towards the middle section having a larger diameter and supporting the wheel axle. Said conical section (7) is fittingly received in a corresponding conical bore (11) in the bracket (3).

Description: The invention relates to an oscillating axle device comprising an axle being pivotably supported by means of a pin mounted in a U-shaped bracket connected to a frame and fittingly encompassing said axle, both legs of said bracket being provided with a bore coaxial with the bore in the axle for receiving said pin which can be inserted into said bracket, one end of said pin being provided with a screw-thread for fixing the pin in the bracket by means of a nut, said pin having a conically increasing section extending from the screw-thread towards the middle section of said pin by which middle section said axle is supported, said conical section being fittingly received in a corresponding conical bore in one of the legs of said bracket and the pin being pulled tightly into said conical bore by means of said nut. Such a device is known by US-A-2,198,616 and in particular by the figures 42 and 43 of this. In case of this known device the end of the pin, opposite the end provided with the screw-thread, is threaded to receive the threaded bore of an adjusting collar. This brings with it that primary the pin has to be brought into the part which has to be supported by it, then the conical portion can be inserted into one leg of the bracket and only then the other leg of the bracket can he mounted. By this the mounting is cumbersome and the U-shaped bracket cannot be formed by one entirely whole so that it will be less stable. The invention now avoids these disadvantages by providing that the head section of said pin, opposite to said conical section, is having a largest diameter which is slightly larger than the diameter of the middle section of said pin, so that the pin can be inserted into said bracket from one end of it, said head section, seen in longitudinal direction of said pin, being slighty convex, said convex section being supported in a cylindrical bore in the related leg of said bracket, the radius of said convex section being in the range between fifteen and twentyfive times the diameter of said head section. To further facilitate the mounting of the pin in said bracket a conical section can be present between said head section and said middle section of said pin, the end of said conical section having the smallest diameter being connected to said middle section. The invention will now be further elucidated by means of an embodiment shown in the drawing, in which: Fig. 1 shows a perspective view of an oscillating axle device, said axle being provided at both ends with one wheel; and Fig. 2 schematically shows a cross-section and a view of an oscillating bracket, the axle being supported in it by means of a pin. The device shown in Fig. 1 comprises the axle 1 with square cross-section, said axle 1 being provided at each end with a wheel 2 in a not shown way. The axle 1 is supported by means of the bracket 3, which in a manner not further shown is connected to a frame. The axle 1 and the bracket 3 are mutually coupled by means of the pin 4, which is fixed by means of the nut 5. As appears in particular from Fig. 2, the pin 4 comprises the screw-thread 6, the conical section 7, the middle section 8, the conical section 9 and the head section 10. The top angle α of the conical section 7 is between 5° and 20° and this section is received into a corresponding conical bore 11 in the leg 12 of the bracket 3. The conical section 7 joins the middle section 8 supporting the wheelaxle 1, said middle section joining the conical section 9 passing into the head section 10 of the pin 4. The head section 10 is supported in the cylindrical bore 13 in the other leg 14 of the bracket 3, while the head section 10 of the pin 4 is not exactly cylindrical but somewhat convex. The radius R may amount from 15 to 25 times the diameter of the head section 10. This means that the head section 10 is only slightly convex. Though it is not possible to hold the pin 4 on tightening the nut 5, in practice it appears that this does not create problems because the pin 4 is sufficiently clamped in the bracket 3.

Claims: Oscillating axle device comprising an axle (1) being pivotably supported by means of a pin (4) mounted in a U-shaped bracket (3) connected to a frame and fittingly encompassing said axle (1), both legs (12, 14) of said bracket (3) being provided with a bore (11, 13 resp.) coaxial with the bore in the axle (1) for receiving said pin (4) which can be inserted into said bracket, one end of said pin being provided with a screw-thread (6) for fixing the pin (4) in the bracket (3) by means of a nut (5), said pin (4) having a conically increasing section (7) extending from the screw-thread (6) towards the middle section (8) of said pin by which middle section (8) said axle (1) is supported, said conical section (7) being fittingly received in a corresponding conical bore (11) in one of the legs (12) of said bracket (3) and the pin (4) being pulled tightly into said conical bore (11) by means of said nut (5), characterized in that the head section (10) of said pin (4), opposite to said conical section (7), is having a largest diameter which is slightly larger than the diameter of the middle section (8) of said pin (4), so that the pin (4) can be inserted into said bracket (3) from one end of it, so that said head section (10), seen in longitudinal direction of said pin (4), being slightly convex, said convex section being supported in a cylindrical bore (13) in the related leg (14) of said bracket (3), the radius of said convex head section being in the range between fifteen and twentyfive times the diameter of said head section (10). Device according to claim 1, characterized in that a conical section (9) is present between said head section (10) and said middle section (8) of said pin (4), the end of said conical section (9) having the smallest diameter being connected to said middle section (8). Parts for application in the device as described in claim 1 or 2.

Inventors: JANSON, KAREL
Applicants: BUISCAR BEHEER B.V.
Application year: 1988
Main classification: B60G1
IPC codes: B60G9, B60G1, F16C11