| 摘要 |
FIELD: electric machinery, particularly electromechanical power equipment, for mechanical engineering, metallurgy and so on. ^ SUBSTANCE: mechanism comprises body. Electric motor, bearing-carrying screw with pulleys and driving belt and driving belt tension control means are arranged on the body. Protective pipe is located in the body. Installed in the protective pipe is bush arranged so that the bush may slide in longitudinal direction along guider inside the bush by means of rod with power nut and head. Dowel of rod rotation prevention means and bearing clamping nut are secured to inner surface of protective pipe. The bearings are connected to screw through intermediate bush. Mechanical retaining means, which fixes bearing clamping nut inside the body, is located on the bearing clamping nut. Protective pipe is provided with inductive end switches. Stops are inserted inside protective pipe from both ends thereof. Longitudinal groove, radial orifice and outer bead are provided in rod end. The outer bead may cooperate with the stops. Insert is introduced into longitudinal groove and radial orifice so that the insert encloses the dowel by side surfaces thereof. The insert is provided with projection arranged in dowel slot of power nut located inside the rod. Intermediate bush is made as an integral part and connected to screw by means of fixing member installed in place of any bearing installation. ^ EFFECT: increased reliability. ^ 5 cl, 6 dwg |
