| 摘要 |
<p>A device for steering a wheel assembly in a riding mower has a steering sprocket nonrotatably connected to a rotatable steering column and a transmission chain which is flexible in the plane of the steering sprocket and extends over the steering sprocket and forms, on both sides thereof, a rectilinear chain run. Two deflecting wheels arranged on both sides of the steering sprocket are positioned in a deflecting wheel plane turned around the respective chain run lines relative to the plane of the steering sprocket. Each of two transmission chains, which extend over the respective deflecting wheels between the free end of the respective chain runs and the wheel assembly, is, between the steering sprocket and the respective deflecting wheels, coupled by means of a link element (20) to the chain, which is flexible in the plane of the steering sprocket, so as to form a straight line with the chain, said link element having a first hinge pin (25) to which an end link (29) in one of the two coupled chains is articulated, and a second hinge pin (27) to which an end link (30) of the other of these two chains is articulated. The two hinge pins (25, 27) are turned relative to each other around the respective lines (L) at an angle equalling the angle at which the respective deflecting wheel plane is turned relative to the plane of the steering sprocket.</p> |
