| 摘要 |
<p>POWER ASSISTED DEVICE FOR BREAKING LAND AND PULLING ROOTS Normally clearing land having small trees, bushes and the like requires several independent treatments and is time consuming as well as being labour intensive. The present device consists of a frame which may be pulled by a tractor or the like and includes a traction wheel or drum adjacent the front thereof, a root picking and raking drum adjacent the rear thereof and drives said traction drum with a transverse shear blade depending from the frame between the traction drum and the raking drum to lift and return a layer of soil and to shear off any roots at the depth of the shearing blade whereupon these roots can be raked to the surface of the soil by the raking drum which is controlled from the traction drum in a manner whereby the speed of rotation of the surface of the raking drum is less than the speed of the device over the ground surface. The energy produced by retarding the speed of rotation of the raking drum is applied to and utilized by the traction drum to reduce the power required to pull the machine forward. A cleaning scraper is provided to maintain the raking teeth on the raking drum in a relatively clean condition.</p> |
