FIELD: construction, improvement and repair of motor roads. SUBSTANCE: platform is installed on chassis with capability to be displaced by power cylinder in longitudinal direction on roller guides installed immovably on the chassis. Mast of the rig is secured on carriage relative to its center and may be moved beyond the lateral dimension of the base chassis, when the carriage is moved on cross frame. The hammer together with changeable tool is displaced by means of power cylinder, which connects the upper part of the mast with slide. EFFECT: improved efficiency due to accurate positioning of actuator with one setting of the rig. 4 dwg
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Authors
Dates
1997-12-20—Published
1996-05-29—Filed