FI77620B - KRAFTOEVERFOERINGSSYSTEM FOER BANDFORDON. - Google Patents

Description

77620

The present invention relates to a transmission arrangement for tracked vehicles, in particular snowmobiles.

It is previously known to move a snowmobile with ^ sleds in particularly difficult conditions or in very heavy transport tasks, so that two snowmobiles v .: are connected to each other by a special intermediate rod system, whereby the front snowmobile "tracks" behind the track to the next one, which now the intended transition / transport task can be performed on the prepared track. Such an arrangement is, of course, only a contingency in the usually difficult conditions in question.

It is therefore an object of the present invention to provide said. instead of an "emergency solution", an arrangement which, in an advantageous manner, allows the use of each snowmobile as a running / working tool even in the most difficult conceivable conditions.

The object of the invention is achieved by an arrangement, the features of which appear from the following description of the invention and the claims.

The description of the invention is made with reference to the accompanying figures, in which:

Figure 1 shows a simplified side view of an arrangement according to the invention.

Figure 2 shows a side view of an embodiment of the arrangement on a larger scale.

Figure 3 shows a top view of the arrangement of Figure 2.

Figure 4 shows a side view of a modification of the arrangement.

Figure 3 shows a top view of the arrangement of Figure 4.

· ': Figure 6 shows a top view of another embodiment of the arrangement.

In Fig. 1, the number 1 indicates a snowmobile to which the arrangement according to the invention is connected. With the track 2 of the snowmobile 1, an intermediate gear 4 rotates in connection with the traction perforation 3 of the track 2 (see also Figures 2 and 3). For the sake of clarity, the intermediate gear 4 is shown in the drawing without toothing *. The intermediate gear 4 again, by joining the traction hole 7 'of the track 6 of the rear carriage 5, rotates the tramacto 6 of the rear carriage 5, whereby a fully traction rear carriage is available, which gives the arrangement ... the characteristics it is intended to improve.

Il 3 77620

In order that the arrangement according to the invention does not limit the controllability of the snowmobile 1, the intermediate gear 4 is set in such a way that it can form my angle with respect to either the snowmobile 1, the rear carriage 5 or the center line 12 of both. Such angles are formed by the rotation of the intermediate gear 4 through the contact point 7 of the gear 4 about the axis of rotation 8 tangential to the camshaft of the gear 4 when the contact point 7 is located in this application at the contact point 3 of the gear 4 in question.

In the embodiment shown in Figures 2 and 3, said rotation takes place by means of rubber bearings 9 which have approximately the same characteristics so that the intermediate gear 4 without the intermediate gear 4 losing its grip on the tensile perforation 3 or 7 '.

In the embodiment shown in Figures 4 and 5, the intermediate gear 4 now rotates only about the tangential axis of rotation 8 with respect to the center line 12 of the second sub-carriage 5 of the vehicle combination (in fact sub-carriage 5 rotates with respect to sub-carriage 1). instead, the idler gear 4 is now in tooth contact with the idler gear 10, which is shaped to allow my maximum angular variation. The contact point 7 is now located at the point of contact between the idler gear 4 and the drive gear 10.

Fig. 6 further shows an arrangement in which the intermediate gear 4 is moved further away from the track 2 by means of a chain transmission 11 so that the track (s) 6 do not collide with the first track 2 during turning. In the said case, of course, the force transmission path can also be reversed. , i.e. from trolley 5 to trolley 1.

Although the traction perforations 3 and 7 'have been discussed above, it is clear that this can be replaced by traction teeth formed on the track mat (s) 2, 6.

* · M

II

Claims (2)

5,77620 Transmission arrangement for tracked vehicles comprising two carriages pivoting relative to each other, characterized in that the substantially equal speed of rotation of the tracks (2, 6) of the carriages (1, 5) is forcibly connected to each other by means of an intermediate gear (4) that the intermediate gear (4) can form an angle (cc) with respect to the center line (12) of at least the second carriage (1, 5) when rotating about the tangential axis of rotation (8) passing through the tooth contact point (7) when the tooth contact point (7) is located at the point of contact of the respective tooth of the intermediate gear (4) with the traction hole (3, 7 ') or the drive gear (10). Transmission arrangement according to Claim 1, characterized in that the intermediate gear (4) is moved further away from the second track (2 or 6) by means of a chain drive (11). • A ·