A compound brake system bogie and engineering vehicle

Abstract

The invention discloses a hybrid brake system bogie and an engineering vehicle. The axle box suspension technology is adopted for the device, a single outer round spring is adopted at the upper end of an axle box, an empty and load spring is large in deflection, and the vertical dynamic performance of the vehicle is improved. A disc brake device is large in brake power, meanwhile, abrasion between a large number of pins and sleeves is reduced, and convenience is brought to maintenance and application. A unit type brake shoe brake device is compact in structure and high in brake efficiency, part of brake loads are provided, meanwhile, the function of a tread sweeper is achieved, the adhesion coefficient between wheels and rails is increased, and therefore brake performance is improved. A hybrid brake system is adopted, the requirement of brake heat loads at large axle loads and high retarded velocity is met, and barrier-free running of the engineering vehicle between a subway tunnel and a railway main track is achieved.

Description

technical field [0001] The invention relates to a composite braking system bogie and an engineering vehicle, which are suitable for engineering vehicles in subway tunnels and main railway lines. Background technique [0002] The operating environment of subway tunnel engineering vehicles is harsh and the braking conditions are complex, which is quite different from that of railway main line engineering vehicles, and the limits of the two are different. The difference has led to no railway engineering vehicles that can directly operate in subway tunnels and main railway lines at the same time. Especially for engineering vehicles with relatively large axle loads (17t and above), a single set of braking device cannot meet the requirements of frequent braking and large braking deceleration (1.34m / s) in subway tunnels. 2 ), the braking power of the shaft exceeds the acceptable range of the braking device, the thermal load of the braking is high, and the braking device cannot mee...

AI Technical Summary

Problems solved by technology

The difference has led to no railway engineering vehicles that can directly operate in subway tunnels and main railway lines at the same time

Especially for engineering vehicles with relatively large axle loads (17t and above), a single set of braking device cannot meet the requirements of frequent braking and large braking deceleration (1.34m / s) in subway tunnels. 2 ), the braking power of the shaft exceeds the acceptable range of the braking device, the thermal load of the braking is high, and the braking device cannot meet the requirements of use

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