Сenter sill riveting plant enables a set of technological operations related to the riveting of stops and strips in the manufacture of сenter sills.
The plant consists of:
- center sill girder riveting machine (2 pcs);
- hydraulic station (2 pcs);
- rivet heating unit (2 pcs);
- ring or chain positioner;
- electrical equipment.
The riveting plant provides direct riveting of stops and strips to the center sill and consists of a column, a console, a trolley, a riveting bracket with crimps, a counterweight, a guard and other components.
The column secures the plant to the shop floor. In the lower part of the column, there are four holes for foundation bolts on the plate. In the upper part, there are two transshipment surfaces for attaching two brackets, with the help of which the console can be rotated by an angle of 270 degrees. The trolley moves on the horizontal guides of the console. The riveting bracket is held in a balanced vertical position by means of a balancing device.
The riveting clamp is the plant’s working body and ensures the riveting work’s performance. The bracket body carries the hydraulic cylinder and the crimp and is the bracket’s power element. The hydraulic cylinder develops the riveting force and ensures the vertical stroke of the crimping tool, which is necessary for the riveting process. The crimping action ensures that the rivet head is formed in the riveted joint.
The hydraulic station provides oil pressure and riveting performance and consists of a pumping unit, control equipment, and a tank housing.
The idle and drive supports are installed and fixed on the shop floor and ensure the orientation of the gondola girder beam during riveting.
Operation principle
The sill is crane-loaded into the positioner by the customer’s vehicle. After installation, the positioner rotates the sill into a position convenient for riveting. The worker takes a heated rivet from the heating unit, places it in the hole of the sill, brings in the hydraulic clamp and performs the riveting. The riveting is performed simultaneously at two working positions (on both sides of the sill).
When the riveting is complete, the sill is removed from the plant and placed in a storage area.
