| 摘要 |
A locomotive comprises traction wheels 46, 48, 58, 62 and a control wheel 50, 60 on each side and a motor 34, 38 which rotates one wheel on each side. The control wheel 50, 60 is located above, in between and in contact with the traction wheels 46, 48, 58, 62 such that the control wheels 50, 60 cause the traction wheels 46, 48, 58, 62 to rotate together. The traction 46, 48, 58, 62 and/or control 50, 60 wheels may comprise a rubber tyre on a steel wheel and/or the tyres may be conventional road vehicle tyres. There may be separate motors 34, 38 for driving wheels on each side. Each motor 34, 38 may drive a traction wheel 46, 58 and the driven traction wheels 46, 58 may be arranged diagonally. There may be mounting frames 30, 32 on each side. Each free traction wheel 48, 62 may have a suspension 56, 68 which may comprise a spring and/or a damper. The traction wheels 46, 48, 58, 62 may be mounted to a support arm 42, 66 pivotally mounted to the locomotive at one end and connected to the mounting frame 30, 32 at the other. The control wheels 50, 60 may be mounted by a resilient mounting 54, 70. The mounting frames 30, 32 may be adjustable so they can be varied for use with different gauges (figs 7 and 8). |
