Railway machinery bogie axle box suspension, corresponding axle boxes, bogies and railway machinery

Abstract

The invention relates to the technical field of bogies of railway vehicles, and discloses an axle box, a bogie, a railway machine and an axle box suspension device of the bogie of the railway machine. The axle box suspension device can meet requirements of the large track maintenance machine on operation walking, high-speed automatic walking and coupling running. The axle box suspension device of the bogie of the railway machine comprises the axle box, a metal rubber spring and a vertical hydraulic damper. The metal rubber spring and the vertical hydraulic damper form an axle box spring suspension device, one end of each of the metal rubber spring and the vertical hydraulic damper is mounted on the axle box, and the other ends of the metal rubber spring and the vertical hydraulic damper are connected with mounting seats on a bogie structure. The axle box, the bogie, the railway machine and the axle box suspension device have the advantages that the axle box suspension device of the bogie is simple in structure, small in size, good in buffering and damping performance and low in noise, and is light, vehicle unloading and maintenance are facilitated, transverse acting force on wheel tracks and abrasion to the wheel tracks are effectively reduced, wheel turning repair and track maintenance workloads are reduced, and the economic efficiency is high.

Description

technical field [0001] The invention relates to the technical field of railway vehicle bogies, and discloses a railway machinery bogie axle box vibration damping mechanism, which is particularly suitable for a railway large mechanical bogie axle box suspension device, especially a railway machinery bogie axle box suspension device. The present invention also relates to bogie axle boxes, bogies and railway machinery using such a suspension device. Background technique [0002] The bogie axle box damping mechanism can not only provide vertical damping for railway vehicles, but also control the lateral positioning stiffness of the wheelset. The existing large-scale road maintenance machinery bogie axle box suspension device generally consists of an axle box, a spiral steel spring, a wedge friction damper, and a wear plate. Although the existing axle box suspension device has good critical meandering running stability, the structural form is that the axle box is positioned on t...

AI Technical Summary

Problems solved by technology

Although the existing axle box suspension device has good stability in critical snaking operation, the structural form is that the axle box is positioned on the side of the bogie pedestal with semi-rigidity, and the axle box has a large transverse rigidity to the frame, resulting in a large lateral force. Poor curve passing performance, severe wheel and rail wear, increased wheel turning and track maintenance, and high maintenance costs

The friction damper in this device generates resistance by means of the relative sliding of the friction surface, and the friction force changes with the state of the friction surface, and because the friction force has basically nothing to do with the vibration speed, it may appear that when the amplitude is small, the friction resistance may Large enough to form a hard impact on the car body; when the amplitude is large, there may be insufficient frictional resistance to rapidly attenuate the vibration, resulting in poor running stability, and the structure of the friction shock absorber is complicated, and it is difficult to get off the car, Maintenance is not convenient

[0003] For example, the application number is: 200920277502, and the Chinese utility model patent titled "A Damping Mechanism for the Axle Box of a Railway Freight Car" has improved the curve passing ability of the bogie to a certain extent, but the structure is relatively complicated, and the mutual cooperation between prone to deviation

[0004] Another example is that the application number is: 2008200050763, and the name is "Rubber Type Axlebox Suspension Device". Through the rubber stacks respectively arranged between the two ends of the axlebox body, the top and the frame, the axlebox body can be vertically and laterally loaded at the same time. force and longitudinal force, but there may be problems such as difficult disassembly, inconvenient maintenance, and insufficient strength

[0005] In addition, due to the poor nonlinear characteristics of the spiral steel spring, it is not conducive to the attenuation of dynamic impact during the operation of large-scale road maintenance machinery, so the existing axle box suspension device cannot meet the operation requirements of large-scale road maintenance machinery at speeds above 120km / h

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