Engineers from OOO "Scientific and Research Center STM" have patented an innovative locomotive frame design that significantly simplifies and improves the manufacturability of production.
The utility model is based on a new approach to building the central part of the frame. Instead of complex power elements, a beam cage formed by longitudinal and transverse beams is used. This solution allows the central power frame to be manufactured as a separate module and then integrated into the overall locomotive structure.
The authors of the development note that traditional frames are often built on massive I-beams. Such elements require additional reinforcement, and their large sizes can complicate procurement and affect production times. In addition, some previously used schemes are characterized by high complexity of welding and geometry control.
The new design provides for two central longitudinal beams connected by a power frame, side longitudinal beams, and transverse elements. Additional longitudinal beams connect the transverse ones, forming a rigid spatial system. The central and transverse beams are made with a U-shaped section, and the side ones are box-type.
The developers also provided for the possibility of placing a battery compartment under the central power frame, which further strengthens the structure and helps to absorb loads from the diesel generator set and fuel tank.
According to the authors, the modular assembly principle simplifies the manufacture of individual units, facilitates control of geometry and welded joints, and also increases the manufacturability of the entire locomotive frame.
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