| 摘要 |
A lawn mower comprising a vehicle body including a first connecting frame in a forward portion thereof, and a vertically adjustable grass cutting unit including a second connecting frame for pin connection to the first connecting frame. The first connecting frame defines two pin-receiving bores arranged horizontally, one of which is a circular fitting bore and the other a slot providing play. The second connecting frame defines three pairs of pin-receiving bores, the respective pairs being disposed at different heights from the ground. The slot in the first connecting frame has a sufficient length to be connected to one of the top or bottom bores of the second frame while the circular bore is connected to the diagonally opposite bore of the second frame.
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