| 摘要 |
<p>A planter driven by a shaft of a walking tractor. A cam (7) with multiple embossments is sleeved on a shaft of a driving wheel shaft of the walking tractor. A ratchet wheel structure is installed on a planting wheel shaft of the planter. The ratchet wheel structure comprises an oscillating bar (2), a pawl (1), a check pawl (5), and a ratchet wheel (4) installed on the planting wheel shaft. The oscillating bar (2) is installed on the ratchet wheel (4). A return spring (3) is arranged on the oscillating bar (2). The pawl (1) is hinged on the oscillating bar (2). A driver cooperating with the embossments of the cam (7) is connected to the oscillating bar (2). The planter implements intermittent movement through cooperative use of the cam and the ratchet wheel, thereby bringing convenience to installation of a seed metering device of the planter. In addition, it is convenient for changing a plant spacing of the planter. A long-chain wheel and land wheel structure is cancelled, so that a driving manner is simple and reasonable, off-chain, stuck, and miss-seeding phenomenon and the like do not occur in a planting process, maintenance is convenient, and a fault rate is decreased, thereby improving reliability and working efficiency of the planter.</p> |
