Disclosed is a frame for a bogie, comprising two side beams parallel to each other and a transverse beam connected to the middles of the side beams, wherein the middle of the transverse beam is provided with a traction pin hole, and an upper surface of the transverse beam is provided with a plurality of mounting seats for mounting a secondary suspension. The frame of the present invention is provided with a traction pin hole at the center of the transverse beam so that the transverse beam is connected to the bolster so as to bear a traction force, and a plurality of mounting seats for mounting the secondary suspension are arranged on an upper surface of the transverse beam, so that the secondary suspension can bear a rotation movement between the bogie and the vehicle body to improve curve passing capability of the vehicle.

A spring arrangement for a vehicle, particularly a rail vehicle with at least one wagon and at least one bogie, wherein so as to create favorable construction conditions the spring arrangement includes at least one suspension spring, at least one pre-stressed damping spring, a contact body connected to the damping spring, and at least one first auxiliary spring, where a first longitudinal axis of the suspension spring, a second longitudinal axis of the damping spring, a third longitudinal axis of the contact body, and a fourth longitudinal axis of the first auxiliary spring are arranged parallel to each other, and where the contact body is arranged between the damping spring and the first auxiliary spring such that a low level of overall rigidity of the spring arrangement is obtained for a height adjustment of the vehicle.

A spring arrangement for a vehicle, particularly a rail vehicle with at least one wagon and at least one bogie, wherein so as to create favorable construction conditions the spring arrangement includes at least one suspension spring, at least one pre-stressed damping spring, a contact body connected to the damping spring, and at least one first auxiliary spring, where a first longitudinal axis of the suspension spring, a second longitudinal axis of the damping spring, a third longitudinal axis of the contact body, and a fourth longitudinal axis of the first auxiliary spring are arranged parallel to each other, and where the contact body is arranged between the damping spring and the first auxiliary spring such that a low level of overall rigidity of the spring arrangement is obtained for a height adjustment of the vehicle.

Various embodiments provide a stabilizing transom. Various embodiments provide a vehicle truck such as a railroad car truck including a first side frame, a second side frame, a bolster, and a stabilizing transom connected to the first side frame and the second side frame and configured to reduce, inhibit, minimize, and/or prevent truck hunting and warping.

A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.

A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.

The present disclosure provides a bogie, a rail vehicle having same, and a rail transport system. The bogie includes: a bogie frame, where the bogie frame has a straddle recess straddling a rail; a first running wheel and a second running wheel, where the first running wheel and the second running wheel are pivotably mounted onto the bogie frame respectively and are coaxially spaced apart; a third running wheel and a fourth running wheel, where the third running wheel and the fourth running wheel are pivotably mounted onto the bogie frame respectively and are coaxially spaced apart; a driving device, where the driving device is located between the first running wheel and the second running wheel, and the first running wheel and the second running wheel are driven by the driving device; and/or the driving device is located between the third running wheel and the fourth running wheel, and the third running wheel and the fourth running wheel are driven by the driving device. The bogie according to this embodiment of the present disclosure facilitates optimization of the structure of an escape passage, and has advantages such as high space utilization, high stability, and strong weight bearing capability.

A novel freight car truck bolster comprising a top member with a center bowl and support shelves for side bearers, a bottom member with bearing surfaces for swing suspension springing elements, going into diagonal tension members, side walls joining the top and bottom members, vertical longitudinal ribs located between the top and bottom members with their thickness increased in the center bowl area, pockets to install friction wedges. The bottom member has increased thickness in the transition areas of the bearing surfaces into the diagonal tension members, and the vertical ribs have thickness increased at the top of the center bowl area, the rounded transitions of the sloping walls into the bottom member bearing surfaces have a radius exceeding the radius of the rounded transitions of the vertical walls into the said bearing surfaces.

A novel freight car truck bolster comprising a top member with a center bowl and support shelves for side bearers, a bottom member with bearing surfaces for swing suspension springing elements, going into diagonal tension members, side walls joining the top and bottom members, vertical longitudinal ribs located between the top and bottom members with their thickness increased in the center bowl area, pockets to install friction wedges. The bottom member has increased thickness in the transition areas of the bearing surfaces into the diagonal tension members, and the vertical ribs have thickness increased at the top of the center bowl area, the rounded transitions of the sloping walls into the bottom member bearing surfaces have a radius exceeding the radius of the rounded transitions of the vertical walls into the said bearing surfaces.

Disclosed is a bolster of a bogie, wherein a secondary suspension connected with a transverse beam of the bogie is arranged below the bolster, and a third suspension connected with a vehicle body is arranged above the bolster. The bolster of the bogie of the present invention realize a functional separation by adding a suspension between the bottome of the bolster and the transverse beam to make the frame and the vehicle body be connected through a two-stage suspension, so that the third suspension above the bolster is only used to undertake a transverse displacement function, and the secondary suspension under the bolster is only used to undertake a rotation function, thereby further increasing displacement and relative rotation angle between the vehicle body and the bogie when the vehicle passes through a curve, and improving curve passing capability of the vehicle.