| 摘要 |
<p>This invention concerns improvements to an hydraulic system used to move bucket conveyors, whereby the bucket conveyors are loaders with scoops and with at least one run substantially parallel to the ground and swivelling around a substantially vertical axis, and whereby the swivelling is governed as regards its manner and strength by the hydraulic group, and whereby the hydraulic system is of any desired type; the improvements comprise in cooperation, a motor, which is supported in a revolving manner on the axle of rotation of one pulley and has its movement defined by at least one limiting protrusion positioned to cooperate in elastic suspension with at least one substantially unmoving limiting arm; at least one transmission means is connected to and governed by the limiting protrusion of the elastic suspension and itself governing at least one regulating valve in the hydraulic system. Bucket conveyors which embody one or more of these improvements are also an object of this invention.</p> |
