COMBINED AGGREGATE FOR PREPARATION OF FOUNDATIONS FOR ICE ROADS ON SWAMPS Russian patent published in 2009 - IPC E01C19/26 

FIELD: construction, road engineering.

SUBSTANCE: invention is related to machines for preparation of foundations in process of winter roads arrangement on swamps, namely to machines for sagging with creation of holes in frozen, swamped foundation in northern conditions. In order to improve efficiency, combined aggregate for preparation of foundations for ice roads on swamps comprises the first and second stages, arranged on frames, which are connected to each other by means of hinged joint. At the same time the first stage represents a working element that consists of double-axis pneumatic roller, axes of which are mounted on the frame of the first stage with the help of four hydraulic cylinders. Pneumatic wheels on axes are installed in staggered order so that space that remained non-sagged with the pneumatic wheels of the first axis is sagged with pneumatic wheels of the second axis. The second stage represents a working element in the form of two drums with movable spurs, installed on the second stage frame. Pneumatic wheels are equipped with their pressure control system. Control of specific pressure value in pneumatic wheels upon swamp foundation is provided by means of ballast mass variation at the first stage, and specific pressure of drums with movable spurs is controlled by means of ballast mass variation at the second stage.

EFFECT: improved efficiency in preparation of foundations for arrangement of winter roads on swamps.

1 cl, 6 dwg