70% low floor light rail power bogie
A power bogie, low-floor technology, applied in the direction of the bogie, the device for lateral relative movement between the underframe and the bogie, the parts of the railway car body, etc. Comfortable, improved serpentine critical speed, excellent running stability
Inactive Publication Date: 2013-09-18
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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Problems solved by technology
[0002] At present, there are only a handful of light rails in China that have successfully realized commercial operation, but the power bogie allows the vehicle to pass through a minimum curve radius of 50m, poor lateral running stability, and a maximum commercial operation speed of only 70km / h h, unable to meet the technical requirements of modern low-floor light rail vehicles passing through the minimum curve radius of 25m, excellent running stability, and operating speed of 80km / h
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[0009] refer to figure 1 , figure 2 , the present invention includes frame 1, wheel-to-axle box device 2, primary suspension device 3, secondary suspension device 4, central traction device 5, driving device 6, foundation braking device 7, bogie pipeline and auxiliary equipment 8, adopting Four side bearings 9 made of polymer wear-resistant materials are arranged on the left and right sides of the bogie bolster structure 10, directly supporting the car body underframe 12; the primary suspension adopts herringbone rubber spring 11, and the longitudinal positioning stiffness is 19.4kN / mm , the lateral positioning stiffness is 2.8kN / mm, and the equivalent taper of the tread is 0.888. The reasonable matching of these three parts ensures that the lowest snake-like critical speed of the vehicle is much higher than its The maximum operating speed is 80km / h. At the same time, ensure that the lateral stability indicators of the vehicle in various states are all excellent, less than ...
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The invention relates to a 70% low floor light rail power bogie which comprises a framework, wheel set shaft box devices, primary suspension devices, secondary suspension devices, center draft gears, actuating devices, foundation braking devices, bogie pipelines and assistant devices. The bogie is characterized in that whole side bearings of the secondary suspension devices are borne by and matched with herringbone rubber springs of the primary suspension devices; and the frictional coefficient of the side bearing friction pairs is less than 0.1, and the side bearing friction pairs are matched with a U-shaped swing bolster structure. The bogie provided by the invention is a power bogie for novel 70% light rail vehicles, and aims to satisfy the requirement that the vehicle can pass curve and groove profile lines with a radius of 25 m. Through the change of the primary suspension devices and the secondary suspension devices, and the U-shaped swing bolster structure matched with the side bearing friction pairs when the frictional coefficient of the side bearing friction pairs is less than 0.1, the vehicle can pass curve lines with the radius of 25 m; the running stability of both the new wheel condition and the old wheel condition is good; the highest running speed reaches 80km / h; larger vertical and horizontal stiffness ratio is realized; the snake-shaped critical speed of the vehicle is effectively improved; and the comfortability of the riding is improved.
Description
technical field [0001] The invention relates to a 70% low-floor light rail power bogie. In particular, it relates to a power bogie applied to a low-floor light rail vehicle that can pass through a minimum curve radius of 25m, a maximum running speed of 80km / h, and excellent running stability. Background technique [0002] At present, there are only a handful of light rails in China that have successfully realized commercial operation, but the power bogie allows the vehicle to pass through a minimum curve radius of 50m, poor lateral running stability, and a maximum commercial operation speed of only 70km / h h, unable to meet the technical requirements of modern low-floor light rail vehicles passing through the minimum curve radius of 25m, excellent running stability, and operating speed of 80km / h. Contents of the invention [0003] In order to meet the strong demand for modern low-floor light rail vehicles in domestic and foreign markets, we have successfully developed ...
Claims
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IPC IPC(8): B61F5/50B61F5/02
Inventor 强锋韩俊臣张赛高纯友薛文根谷晓鹏于忠建郭璇
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD