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.

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.

A railroad car articulated split friction wedge assembly including first and second articulated friction wedges, wherein the first friction wedge includes a first body, a first decoupling insert, a first pivot member pivotally moveable with respect to the first body and the first decoupling insert, and a first wear pad removably attached to the first pivot member, and wherein the second friction wedge includes a second body, a second decoupling insert, a second pivot member pivotally moveable with respect to the second body and the second decoupling insert, and independently of the first body and the first pivot member, and a second wear pad removably attached to the second pivot member, which in combination provide required damping, provide high warp restraint, reduce binding, and enable lateral decoupling.

A railroad car articulated split friction wedge assembly including first and second articulated friction wedges, wherein the first friction wedge includes a first body, a first decoupling insert, a first pivot member pivotally moveable with respect to the first body and the first decoupling insert, and a first wear pad removably attached to the first pivot member, and wherein the second friction wedge includes a second body, a second decoupling insert, a second pivot member pivotally moveable with respect to the second body and the second decoupling insert, and independently of the first body and the first pivot member, and a second wear pad removably attached to the second pivot member, which in combination provide required damping, provide high warp restraint, reduce binding, and enable lateral decoupling.

A railroad car truck including a first side frame, a second side frame, a bolster, and a plurality of warp restraints that are configured to prevent warping of the bolster relative to the side frames.

A railroad car truck including a first side frame, a second side frame, a bolster, and a plurality of warp restraints that are configured to prevent warping of the bolster relative to the side frames.

There is a damper wedge for a railroad car truck. It has a friction member that rides on the wear plate of the side frame column of the railroad car truck. It has a non-metallic wear surface; a spring seat that, in use, engages a spring of the railroad car truck; and an inclined damper wedge surface having a primary angle, alpha, and a secondary angle, beta. The spring seat has an axial centerline. The inclined damper wedge surface has a curvature. The curvature has a working point. The damper wedge has a datum plane that is normal to said non-metallic wear surface and that contains said axial centerline. The axial centerline meets said inclined damper wedge surface at an intersection point that is the center of a contact patch. The working point is located in a central region of the contact patch, or working surface patch.

There is a damper wedge for a railroad car truck. It has a friction member that rides on the wear plate of the side frame column of the railroad car truck. It has a non-metallic wear surface; a spring seat that, in use, engages a spring of the railroad car truck; and an inclined damper wedge surface having a primary angle, alpha, and a secondary angle, beta. The spring seat has an axial centerline. The inclined damper wedge surface has a curvature. The curvature has a working point. The damper wedge has a datum plane that is normal to said non-metallic wear surface and that contains said axial centerline. The axial centerline meets said inclined damper wedge surface at an intersection point that is the center of a contact patch. The working point is located in a central region of the contact patch, or working surface patch.

A bolster system and method of balancing a locomotive on a bolster system is provided. The bolster system is configured such that weld seams interconnect the locomotive to the bolster, and the weld seams are oriented such that when the truck or locomotive impacts another device on the rail track, the weld seams experience a shearing force along the lengths of the weld seams. In addition, prior to welding, scales such as hydraulic jacks with gauges may be used to center and balance a locomotive on a bolster. In one embodiment, four hydraulic jacks elevate the truck, bolster, and locomotive, and the locomotive is repositioned on the bolster until the hydraulic jacks have substantially similar measures.

A bolster system and method of balancing a locomotive on a bolster system is provided. The bolster system is configured such that weld seams interconnect the locomotive to the bolster, and the weld seams are oriented such that when the truck or locomotive impacts another device on the rail track, the weld seams experience a shearing force along the lengths of the weld seams. In addition, prior to welding, scales such as hydraulic jacks with gauges may be used to center and balance a locomotive on a bolster. In one embodiment, four hydraulic jacks elevate the truck, bolster, and locomotive, and the locomotive is repositioned on the bolster until the hydraulic jacks have substantially similar measures.