25-meter curve radius metro bogie

Abstract

The invention provides a 25-meter curve radius metro bogie, comprising a framework, a wheelset axle box device, a secondary suspension device, a foundation brake device and a driving device. The 25-meter curve radius metro bogie is characterized in that an air spring of the secondary suspension device is connected with a swing bolster lower cover plate; a bearing mounting seat is welded in the middle of a swing bolster lower cover plate and is used for mounting a spherical bearing; and an inner ring of the spherical bearing is connected with a vehicle body sleeper beam, and an outer ring of the spherical bearing is connected with the bearing mounting seat. According to the invention, the way a turntable bearing is added to the swing bolster is adopted and thus the rotation between a vehicle body and the bogie is realized through rotating the bearing inner ring and the outer ring, and further guarantee the vehicle passes through a 25-meter curve radius.

Description

technical field [0001] The invention relates to a subway bogie, in particular to a subway bogie passing through a curve radius of 25 meters. Background technique [0002] The environmental conditions of modern urban rail transit lines vary greatly. For each rail transit line that operates independently, it is of little significance to impose a uniform minimum curve radius across the country and the city. The bogie is the running part of the railway vehicle, and the subway bogie with a curve radius of 25m is a special-purpose bogie, which is suitable for lines with a curve radius of 25m~80m. At present, most subway lines at home and abroad have a curve radius greater than 80m, and the bogies suitable for this curve radius all adopt the structure type without bolsters; the curve radius of subway lines in a few countries and regions is less than 80m, in order to meet the performance of vehicles passing through a curve radius of 25m According to the requirements, according t...

AI Technical Summary

Problems solved by technology

At present, most subway lines at home and abroad have a curve radius greater than 80m, and the bogies suitable for this curve radius all adopt the structure type without bolsters; the curve radius of subway lines in a few countries and regions is less than 80m, in order to meet the performance of vehicles passing through a curve radius of 25m According to the requirements, according to the fixed distance of the vehicle, the horizontal span of the air spring and other parameters, the maximum rotation angle between the bogie and the car body is 15.4 degrees, and the maximum displacement of the air spring is nearly 260mm. At present, the displacement capacity reaches 260mm, and the carrying capacity is 10.5t The left and right air springs do not exist and cannot meet the requirements

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