| 摘要 |
<p>The present invention relates to a harrow for a tractor and, more specifically, to a harrow for a tractor installed at a rotary device to be easily attachable and detachable. To this end, the present invention provides the harrow for the tractor comprising: a harrow frame having a front end hinge-coupled to an upper part of the rotary device for the tractor; a harrow plate coupled to a rear end of the harrow frame; and a lifting and lowering cylinder lifting and lowering the harrow plate. The present invention is configured to include a castor bracket installed at one side of the harrow frame or the harrow plate, a support having one side coupled to the castor bracket to be rotatable, and a castor installed at the other side of the support; a fixating shaft on one side of the castor bracket to fixate one side of the support, and a rotation guidance unit having an arc shaped guidance hole on the other side of the castor bracket and a lower insertion recess and an upper insertion recess extended from a lower end and an upper end of the guidance hole respectively; a rectangular shaped fixating hole on one side of the support to pass through the fixating shaft and to be capable of moving a position in a state of passing through the fixating shaft; and a support shaft formed to be spaced from the fixating hole, and inserted into the lower insertion recess or the upper insertion recess while moving along the guidance hole when the support rotates to unfold or fold the support.</p> |
