Rail vehicle bogies

Abstract

The invention relates to a railway vehicle bogie which comprises a first wheel pair, a second wheel pair, a first side frame, a second side frame, a swing bolster, a damping device, a carrying saddle, a secondary spring suspension and a constant-contact side bearing. The first side frame and the second side frame are mounted on outer sides of two ends of the first wheel pair and the second wheel pair, and the railway vehicle bogie is characterized in that a two-stage-stiffness primary suspension system is mounted between a small guide frame on an end portion of each side frame and the carrying saddle, and a first pull rod and a second pull rod are connected between triangle holes of the first side frame and the second side frame and intercrossed. The railway vehicle bogie has the advantages that the railway vehicle bogie is simple in structure, convenient to maintain and high in adaptability to twisted lines, shear deformation of the two side frames of the bogie is restrained by elasticity, and diamonding is inhibited, so that the bogie has a certain capacity to restore a correct position, dynamic acting force of wheel / rail parts is relieved, radial capacity between wheels and rails of the bogie, vehicle running speed and curve passage capacity are improved, and vehicle running quality is improved.

Description

technical field [0001] The invention relates to a rail vehicle bogie, which belongs to the field of rail vehicle bogies. Background technique [0002] The bogie mainly plays the role of steering (smoothly passing through various curves), carrying (realizing the load target), running (realizing the running speed and running quality), and braking (realizing the platoon running vehicles within the specified distance) in the train operation of rail transit vehicles. parking) function. It is the key and foundation for rail transit vehicles to achieve heavy load speed increase and ensure the quality of vehicle operation. [0003] The research points out that the anti-diamond stiffness of the bogie has a controlling effect on the stability of the bogie's snaking motion. If the anti-diamond stiffness is small, the two wheels are prone to shake their heads in the same direction and reverse lateral movement, and the linear motion stability of the bogie is poor. , prone to snaking in...

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned bogies have not yet been fully optimized from the spring suspension and the elastic elements of the tie rods, so there are still some problems in improving the diamond resistance, optimizing the radial passing capacity of the bogie during low power and curve operation, and the reliability of elastic elements. Limitations, the performance still cannot meet the best requirements, it is necessary to further improve this

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