Bogie for freight car and freight car

Abstract

The invention discloses a bogie for a freight car and the freight car. The bogie for the freight car comprises two wheel pairs, two side frames arranged at the outer side the wheel pairs, a swing bolster fixedly connected with the centers of the two side frames, and a K-shaped support device. The K-shaped support device passes through preset holes at both sides of the abdominal region of the swing bolster, a first upper end part, a second upper end part, a first lower end part and a second lower end part of the K-shaped support device are respectively and elastically connected with the two side frames, the first upper end part, the second upper end part, the first lower end part and the second lower end part are symmetrical relative to the central line of the swing bolster. The bogie for the freight car ensures that reinforced ribs for bearing vertical loads can be arranged on the middle part of the swing bolster without arranging the K-type support device on the middle part of the bolster, thereby increasing the rigidity of the bogie against diamond deformation, and increasing the strength of the bolster for bearing the vertical loads.

Description

technical field [0001] The invention relates to railway transport equipment, in particular to a truck bogie and a truck. Background technique [0002] At present, railway freight cars are generally composed of car body, bogie, braking device, coupler buffer device and other parts. Among them, the function of the bogie is to support the car body, guide the vehicle to run along the track, and bear various loads from the car body and the track. The most common bogie on a railway freight car is a three-piece two-axle bogie, which consists of a bolster, two side frames, two wheel sets, a spring damping device and a braking device. [0003] However, the three-piece two-axle bogie has low rigidity against rhomboid deformation, and its critical speed when the curve passes is not high. In view of the shortcomings of this three-piece two-axle bogie, a cross-supported three-piece two-axle bogie is mostly used. This kind of bogie is to add an elastic cross link between the two side fr...

AI Technical Summary

Problems solved by technology

During the operation of the bogie carrying the truck body, the bolster mainly bears the vertical load applied to the center plate. Since the middle part of the bolster is a cavity, the vertical load can only be transmitted by the side wall, and its strength is very weak, so , in order to ensure the strength of the bolster to bear the vertical force, it is necessary to increase the thickness of the side wall in the middle of the bolster, so that the weight of the bolster increases more, which leads to an increase in the overall weight of the truck, thereby reducing the effective load of the truck

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