Positioning device for hydraulic shaft frame vibrator roller in the road construction

摘要

Hydraulic manhole frame - vibrator roller (s), which is provided by means of the sewer building and a of the road surface (so) set frame (r) with a fixed on it extends in the vertical direction of the lifting device (h) with a hydraulic cylinder (hz), that in the case of fallen to a shaft installation part (sr) the lifting device (h), comprising at least two with tension springs (zf) loaded the course of currently (z), up to the lower edge of the shaft installation part (sr) is lowered into the shaft, then the lower end of the the course of currently (z) hydraulically in the horizontal direction to the outside laterally adjustable spreading arms (sa) with wedges (k) under the shaft installation part (sr) are pressed, and then by means of the currently (z), of course, the shaft installation part (sr) by hydraulic cylinders (hz) is raised as far as necessary, characterized in that, for the positioning of the individual the course of currently (z) the lifting device (h) in the vertical direction, an adjustable depth stop (t), and in that the depth stop (t) as in the vertical direction extending support arm (ta) with which is mounted on the latter and, in the horizontal direction, projecting stop arms (rate tar), is configured in such a manner that, upon absinkprozess of the currently (z), of course, not each hydraulic cylinder (hz) immediately by means of closing of a non-return valve of the hydraulic lifting device (h) has to be interrupted, but this in a single operation according to the process for all the course of currently (z) can take place.