| 摘要 |
In each case a pair of running wheels (5) and in each case a pair of drive wheels (4) are arranged protected by a housing (6) in the front and rear area. The running wheels are intended to roll on an upper tube (3) of the single-rail track (2). The drive wheels (4) roll on a lower tube (3') of the single-rail track. The main weight of the push-car (1) is supported on the lower tube by means of the drive wheels. The running wheels prevent the push-car tipping over and, for this purpose, are inclined with respect to a horizontal plane in such a way that their upper circumferential parts rest against the upper tube. The drive wheels (4) are inclined with respect to the vertical in such a way that their lower circumferential parts rest on the lower tube. Each of the drive wheels is provided with a hydraulic motor connected to it. In order to reduce slip between the drive wheels and the lower tube, the circumferential faces of the drive wheels are provided with a layer of polyurethane. By means of the above described arrangement of the running wheels and the drive wheels, the push-car is given an extraordinary stability against lateral loads, and good track holding. The push-car is therefore particularly suitable for carrying targets of large surface area and which are to be moved on a target range. <IMAGE>
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