Bogie for high-speed rail wagon

Abstract

The invention discloses a bogie for a high-speed rail wagon. The bogie comprises a framework, wherein two transverse ends of the framework are connected with a wheel set through two single-stage suspension systems respectively; a double-stage suspension system and a foundation brake device are arranged on the framework; and the front side and the rear side of the framework are provided with an anti-snakelike damper respectively. By the bogie, two-grade requirements that the shaft weight is 16.5t when the speed of the wagon is 200km / h as well as the shaft weight is 18t when the speed of the wagon is 160km / h can be met simultaneously; and the bogie has the remarkable characteristics of simple structure, high popularity and reliable performance.

Description

Technical field [0001] The invention relates to a railway freight car bogie, in particular to a high-speed railway freight car bogie. Background technique [0002] At present, railway freight car bogies generally have three-piece freight car bogies and framed freight car bogies. Due to the obvious shortcomings of three-piece freight car bogies, such as low diamond resistance, large unsprung mass, and inability to install disc brakes, The running speed will not exceed 120km / h, and the frame type freight car bogie has significant advantages such as high diamond resistance and low unsprung mass, and its overall dynamic performance is significantly better than the three-piece freight car bogie. According to the different configuration of frame bogies, there are generally two speed classes 120km / h and 160km / h. The domestic Zhuan K3 bogies belong to the 120km / h speed class bogies, and their typical characteristics are The suspension is a series of axle box suspension, and the basic br...

AI Technical Summary

Problems solved by technology

[0005] Chinese patents ZL01275171.5 (publication number CN 2517641Y), ZL200620034959.8 (publication number CN200945865Y), ZL200720063538.2 (publication number CN201068149Y) are three kinds of railway freight car bogies, the axle box rubber liquid composite spring technology used in the primary suspension, Due to technical reasons, it is difficult to allocate more suitable longitudinal and lateral positioning stiffness values, so the further improvement of its critical speed is limited; the above three types of bogies all adopt the combined bearing mode of the center plate and side bearings. The reason is that it is impossible to obtain a more suitable slewing resistance torque to ensure the straight-line running stability and curve passing performance at high speed at the same time; none of the three types of bogies has a secondary suspension, which cannot meet the requirements for vehicle running stability at high speeds, which limits its critical speed increase

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