| 摘要 |
1. A mobile machine for cleaning vegetables, especially vegetables in bunches, with a horizontal tray (5) mounted on a rotating shaft (15) and comprising a metal grill (42) stretched over a circular frame (39), and with a washing station (4) with an arrangement for projecting water, equipped with a lower and an upper feed pipe supplied from an external source of pressurised fluid, these elements being mounted on a chassis (1) fitted with wheels (2) for conveying the machine to the site where it is to be used, close to the growing area, characterised in that it comprises a hydraulic mechanism for transmitting motion to the tray (5) to cause it to rotate around its axis, this mechanism comprising a double-acting hydraulic jack (20), a distributer (30) connected to the source of pressurised fluid, a motion-transmitting wheel (16) rigidly connected to the rotating shaft (15) of the tray and, near to this wheel (16), two drive wheels (18, 19) mounted on the ends of a rocker with a central pivot axis (29), in the same plane as that of the motion-transmitting wheel (16), these drive wheels (18, 19) resting against one another in such a way that the rotation of one of them transmits by contact rotating motion in the opposite direction to the other, and a connecting part (30) connecting the free end of the piston rod (22) of the hydraulic jack (20) to an eccentric point on one of the drive wheels (18) in such a way that the displacement of the piston in a forward direction causes the rocker to pivot in a first direction and one of the drive wheels (18), called the first drive wheel, to rest on the peripheral belt (17) on the motion-transmitting wheel (16), and also causes the said drive wheel to be displaced in a first direction, and the displacement of the piston in a backward direction causes the rocker to pivot in the opposite direction and the other or second drive wheel (19) to rest on the peripheral belt (17) on the motion-transmitting wheel, and also causes the first drive wheel (18) to rotate in the opposite direction, driving the second drive wheel (19) in the same first rotary direction, thus ensuring that the motion-transmitting wheel (16) is rotated continuously by the alternating contact of the drive wheels.
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