| 摘要 |
A chassis is described which is constructed of two lower side frames (1, 2) which at each end are provided with a wheel or caterpillar track. On each of the two lower side members, there is a horizontal bearing (7, 8). Each of these bearings are connected to an upper vertical side member (3, 4) which a t their upper end is connected to two parallel cross members (5, 6) through horizontal bearings (9-12) for the development of a parallelogram connection . Between the lower and upper side members, there are two double-acting hydraulic cylinders (14, 15). These can be connected in parallel in order to make a weight distribution possible. By means of a regulation valve (23) between pressure side and suction side, respectively, on the double-acting hydraulic cylinders (14, 15) the upper part of the chassis can swing back an d forth in the longitudinal direction of the side members. Between the two cro ss members (5, 6) there is a double-acting hydraulic cylinder (13) which can swing the upper part of the chassis back and forth in the side member's transverse direction by means of a regulation valve (24). Thus, it is possib le to adjust a chassis member to a preferred orientation irrespective of the slope of the surface.
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