FIELD: construction materials production. SUBSTANCE: lifting device has frame, group grip and grip-to-frame connecting unit which includes at least two columns located around grip gravity center and column displacement mechanisms made in form of rack-and-gear drives whose racks are mounted on columns, and gears, on frame. Columns are installed for vertical displacement in guides arranged on frame. Guides are spaced vertically through 2/3 rds of group grip travel. Gears of column displacement mechanisms are installed for synchronous rotation. EFFECT: optimization of transmission of traction force to grip. 4 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| GROUP GRIPPER | 2000 |
|
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|
SU1025521A1 |
