Guidance arrangement for blade of drainage plough - has frame carrying guide and plough frame which can be pivoted about horizontal axis

摘要

Guidance arrangement for the blade of a drainage plough used to lay drain pipes, with a straight guide, which consists of two parallel bars hinged to a frame of the tractor vehicle and an intermediate support hinged to the rod ends where the intermediate support is height adjustable through a servomotor connected with the frame and has two guide grooves, in which the drain plough frame is free mounted with guide pieces. At its bottom end, the blade has a central face and a nose face which runs upwards and sideways and at least one bar of the guide is adjustable in length. The frame (13) carrying the guide (18) and the plough frame (22) can be pivoted about a horizontal axis (41) extending transverse to the direction of movement of the vehicle. - The pivot adjustment of the frame is controlled by a plumb line in its alignment to the vertical while maintaining the plough setting angle.