Railway freight car bogie

Abstract

The invention relates to a bogie for railway freight cars. The suspended foundation braking device is connected with the bolster of the bogie and the upper pull rod for transmitting the braking force, which reduces the unsprung mass of the bogie and is beneficial to improve the dynamics of the vehicle running. Performance: The brake shoe holder is hinged on the round shaft at the end of the brake beam. When the vehicle is braking, the brake shoe holder can rotate around the round shaft at the end of the brake beam, so that the brake shoe can better fit the wheel tread and improve the braking performance. performance; the suspended foundation braking device is suspended on the bogie bolster composition, when the vehicle brakes are relieved, the suspended foundation braking device is only subject to the frictional resistance when the pin shaft rotates, and the frictional resistance is relatively small , which is conducive to improving the braking relief performance; it can also meet the installation requirements of the empty-weight valve connecting branch pipe passing through the bolster; therefore, the railway freight car bogie has a simple structure, strong practicability, and is convenient for maintenance and repair; at the same time, it makes the vibration resistance Stable, high anti-diamond rigidity, and stable running performance.

Description

Technical field [0001] The invention belongs to the field of railway transportation, and particularly relates to a railway freight car bogie. Background technique [0002] The freight car bogie is a key component of railway freight vehicles, and is a relatively independent component in the composition of railway freight cars. General freight car bogies are mainly composed of wheel sets, spring damping devices, side frames, bolsters and basic braking devices. Due to the large number of truck bogies, the general requirements for truck bogies are: simple and reasonable structure, safe and reliable work, good running performance, low manufacturing cost, convenient maintenance and repair, etc. At present, there are mainly three types of truck bogie structures used in our country: 1. It adopts the installation of elastic cross-supporting pull rod devices between the two sides of the frame; 2. It adopts the addition of a spring support plate on both sides, and the pillow spring is plac...

AI Technical Summary

Problems solved by technology

[0003] The above types of bogies all adopt a single-side brake shoe foundation braking device. The slider at the end of the brake beam is lapped in the chute of the side frame. When the vehicle brakes or releases, the slider at the end of the brake beam Moving along the direction of the side frame chute, creating frictional resistance with the side frame chute, adversely affecting the braking or release performance of the vehicle

In addition, in order to increase the diamond-resistant stiffness of the above-mentioned types of bogies, the structures adopted are relatively complicated, the manufacturing cost is high, and at the same time, it brings inconvenience to maintenance and repair.

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