Technical realization elements of end underframe structure, vehicle underframe and rail vehicle

Technical implementation elements:

3. The embodiment of the present invention provides a front-end chassis structure to solve the defect of low structural strength of the traction beam in the related art, to simplify the front-end chassis structure and ensure the safety performance of the front-end chassis structure.

4. The embodiment of the second aspect of the present invention further provides a vehicle underframe.

5. The embodiment of the third aspect of the present invention further provides a rail vehicle.

6. The first aspect of the present invention provides a front-end chassis structure, including:

7. Front end assembly;

8. A traction beam assembly comprising a coupler mount connected to the front end assembly and two traction beams connected to the coupler mount;

9. The bolster assembly, installed on the end of the traction beam away from the coupler mounting seat;

10. In the direction from the coupler mounting seat to the bolster assembly, the distance between the two traction beams gradually increases.

11. According to the front end chassis structure provided by the embodiment of the first aspect of the present invention, by arranging two traction beams in the traction beam assembly, the structural form of the traction beam assembly can be simplified and the processing difficulty of the traction beam assembly can be reduced. By arranging the two traction beams in a form that the distance from the coupler mounting seat to the bolster assembly gradually increases, the transmission of the force from the front end assembly to the bolster assembly can be improved. The vertical traction beam is arranged in an inclined state, which can decompose the external force transmitted along the length direction of the vehicle body into component forces along the length direction and width direction of the vehicle body, thereby reducing the force deformation of the traction beam , The possibility of bending ensures the structural strength and stress stability of the front-end chassis structure. At the same time, by arranging the coupler mounting seat on the traction beam assembly, the installation of key components such as the coupler buffer device can also be facilitated, and the installation convenience of related equipment can be improved.

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