| 摘要 |
An agricultural tractor is provided with a steering column, a gearbox forming part of the vehicle drive train and having a selection lever and a gear change mechanism mounted on the steering column for remotely operating the selection lever of the gearbox. The gear change mechanism comprises a collar mounted for rotation about the axis of the steering column, a first bevel gear fast in rotation with the collar, a second bevel gear meshing with the first bevel gear and mounted for rotation about a fixed axis that extends generally radially from the steering column, a crank arm connected for rotation with the second bevel gear, and a flexible cable connecting the crank arm to the selection lever of the gearbox, the cable enabling the end of the selection lever to be pulled and pushed by rotation of the collar about the steering column.
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