Friction-varying hanging-type shock-absorption bogie

Abstract

The invention relates to a friction-varying hanging-type shock-absorption bogie. The friction-varying hanging-type shock-absorption bogie comprises wheel sets, side frames, bearing components, hanging-type friction-varying shock absorbers, a swing bolster and a brake system, wherein each hanging-type friction-varying shock absorber comprises a shock absorber shell, springs, a threaded lifting rod, a support plate and nuts; the hanging-type friction-varying shock absorbers are suspended on the side frames by the threaded lifting rods and the nuts; the threaded lifting rods penetrate through the shock absorber shells and the support plates in sequence; two ends of each threaded lifting rod are matched with the nuts; the springs are installed between the shock absorber shells and the support plates. According to the invention, not only can the shock-absorption friction matched with an empty vehicle and low dead weight capacity be provided, but also the shock-absorption friction matched with other dead weight capacity also can be provided; the hanging-type friction-varying shock absorbers are installed with pre-compression amount, and as the increase of dead weight capacity, the spring compression amount also increases; a hanging-type structure is adopted by the bogie, and the compression amount and the horizontal rigidity for bearing steel springs decrease, so that the horizontal force between wheel rails is lowered, the wheel rim abrasion is alleviated, and the bogie can smoothly pass by a curve line.

Description

technical field [0001] The invention belongs to the field of railway freight car bogies, and relates to a bogie equipped with a novel shock absorber. Background technique [0002] The friction shock absorber of railway wagon usually adopts two forms: one is constant friction shock absorber with pre-compression; the other is variable friction shock absorber without pre-compression. But these two kinds of shock absorbers have their own limitations: the variable friction shock absorber without precompression provides relatively small vibration damping friction and anti-diamond stiffness when the car is empty and the load is small, and it cannot be empty. Vehicle and light load conditions provide good vibration reduction and running performance; although the constant friction shock absorber with precompression can provide greater vibration damping friction and anti-diamond stiffness for empty vehicle and light load conditions, but The vibration damping friction and anti-diamond...

AI Technical Summary

Problems solved by technology

But these two kinds of shock absorbers have their own limitations: the variable friction shock absorber without precompression provides relatively small vibration damping friction and anti-diamond stiffness when the car is empty and the load is small, and it cannot be empty. Vehicle and light load conditions provide good vibration reduction and running performance; although the constant friction shock absorber with precompression can provide greater vibration damping friction and anti-diamond stiffness for empty vehicle and light load conditions, but The vibration damping friction and anti-diamond stiffness provided by it are relatively small under heavy load conditions

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