Underframe and railway vehicle

Abstract

The invention relates to the field of railway vehicles, and provides an underframe and a railway vehicle. The structure comprises a buffer beam having an upper end provided with a pair of anti-creeperinstallation bases and an end door stand column installation part, a pair of side beams connected to the two ends of the buffer beam respectively, a pair of front-end traction beam bodies, and a pairof rear-end traction beam bodies. The pair of front-end traction beam bodies are connected between a coupler mounting base and the buffer beam at an angle, and the pair of front-end traction beam bodies, the coupler mounting base and the buffer beam form a triangular force transmission structure; the pair of rear-end traction beam bodies are connected between the coupler mounting base and the sleeper beam at an angle; the coupler mounting base, the pair of rear-end traction beam bodies and the sleeper beam form a triangular force transmission structure; the pair of oblique beams is connectedbetween the side beams and the buffer beam, the pair of front-end cross beams is arranged on the two transverse sides of the coupler mounting base respectively, and the front-end traction beam body, the oblique beams and the front-end cross beams form a triangular force transmission structure. Under the condition that the weight of the traction beam is not increased, the coupler compression and tensile load bearing capacity of the traction beam is improved, and local stress concentration cannot be generated on the floor at the rear end of the anti-creeper.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to an underframe and a rail vehicle. Background technique [0002] In the design of the car body chassis, since the end chassis needs to bear a large anti-climbing compression load, the usual method is to install a small longitudinal beam at the rear end of the anti-climbing device to connect to the front beam, and the small longitudinal beam will compress the anti-climbing The load is directly transmitted to the front beam, which is easy to cause stress concentration at the joint; at the same time, because the chassis needs to bear the large longitudinal compression and tensile load from the coupler, the stress on the handle of the front draw beam and the handle of the rear draw beam is too high. High, the usual method is to thicken the plate thickness of the traction beam to improve the longitudinal compression and tensile load capacity of the bearing coupler, but this metho...

AI Technical Summary

Problems solved by technology

[0002] In the design of the car body chassis, since the end chassis needs to bear a large anti-climbing compression load, the usual method is to install a small longitudinal beam at the rear end of the anti-climbing device to connect to the front beam, and the small longitudinal beam will compress the anti-climbing The load is directly transmitted to the front beam, which is easy to cause stress concentration at the joint; at the same time, because the chassis needs to bear the large longitudinal compression and tensile load from the coupler, the stress on the handle of the front draw beam and the handle of the rear draw beam is too high. High, the usual method is to thicken the plate thickness of the traction beam to improve the longitudinal compression and tensile load capacity of the bearing coupler, but this method makes the entire traction beam heavier

It also increases the weight, manufacturing cost and manufacturing difficulty of the chassis

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