A low-floor rail vehicle bogie secondary suspension device and bogie

Abstract

The invention relates to a secondary suspension device of a bogie of a low-floor railway vehicle and the bogie. The secondary suspension device of the bogie of the low-floor railway vehicle comprises swing bolster assemblies. One side of each swing bolster assembly is connected with a pulling rod assembly. A crossbeam shock absorber and a vertical shock absorber are installed on the other side, opposite to the corresponding pulling rod assembly, of each swing bolster assembly, and the other end of the crossbeam shock absorber and the other end of the vertical shock absorber are connected with a framework. The swing bolster assemblies are connected with a vehicle body through swing mechanisms. Secondary spring assemblies are installed between the swing bolster assemblies and the frameworks. The secondary suspension device of the bogie of the low-floor railway vehicle and the bogie are simple and compact in structure and low in weight, and transmission of pulling force and braking force can be better achieved during operation of the vehicle; a vertical load, a transverse load and a longitudinal load are borne, the small-curve passage capacity of the vehicle is greatly improved, and the operation performance of the vehicle is improved; and in addition, a floor can be greatly lowered, so that people get on and get off the vehicle easily, and the driving performance of the vehicle is also greatly improved.

Description

technical field [0001] The invention relates to a bogie of a low-floor rail vehicle and at the same time relates to a secondary suspension device installed on a low-floor articulated rail vehicle, belonging to the technical field of rail vehicle manufacturing. Background technique [0002] Low-floor urban rail vehicles play an increasingly important role in many urban traffic, and in low-floor urban rail vehicles, the bogie is the most important structural component, and its structure and various parameters directly determine the stability of vehicle operation and ride comfort. The bogies of existing low-floor urban rail vehicles generally have problems such as poor ability to pass through small curves, high floor surface, difficulty in getting on and off, and heavy traction devices. With the continuous progress of urban rail vehicles, the requirements for urban rail vehicles are getting higher and higher. Therefore, it is necessary to provide a vehicle that can lower the f...

AI Technical Summary

Problems solved by technology

The bogies of existing low-floor urban rail vehicles generally have problems such as poor ability to pass through small curves, high floor surface, difficult to get on and off, and heavy traction devices.

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