A rail vehicle and a guide device and a guide wheel mounting base used for the rail vehicle are provided. The guide wheel mounting base includes a mounting bracket and a wheel shaft fixing shaft. A through guide hole is provided on the mounting bracket. An outer end of the wheel shaft fixing shaft is connected with a guide wheel. An inner end of the wheel shaft fixing shaft extends through the guide hole. The wheel shaft fixing shaft is movable along an extending direction of the guide hole.

A rail vehicle and a guide device and a guide wheel mounting base used for the rail vehicle are provided. The guide wheel mounting base includes a mounting bracket and a wheel shaft fixing shaft. A through guide hole is provided on the mounting bracket. An outer end of the wheel shaft fixing shaft is connected with a guide wheel. An inner end of the wheel shaft fixing shaft extends through the guide hole. The wheel shaft fixing shaft is movable along an extending direction of the guide hole.

A rail vehicle for a fixed turnout track, including: a vehicle body and bogies. Each bogie is installed at a bottom of the vehicle body; the bogie comprises: a wheelset assembly, a frame, and a track change device; the frame is installed at the wheelset assembly, the track change device is installed at the frame, and the track change device is adapted to cooperate with the branch guide rail of a fixed turnout track to guide the rail vehicle to enter the main rails or the branch rails through the turnout.

A rail vehicle for a fixed turnout track, including: a vehicle body and bogies. Each bogie is installed at a bottom of the vehicle body; the bogie comprises: a wheelset assembly, a frame, and a track change device; the frame is installed at the wheelset assembly, the track change device is installed at the frame, and the track change device is adapted to cooperate with the branch guide rail of a fixed turnout track to guide the rail vehicle to enter the main rails or the branch rails through the turnout.

A coupler system includes: a coupler main body attached to a longitudinal direction end of a carbody of a railcar so as to be rotatable in a yaw direction; a curvature information acquiring portion configured to acquire curvature information of a track, the railcar being located on the track; a control portion configured to determine a target rotation angle of the coupler main body in accordance with the acquired curvature information and output a rotation signal regarding the determined target rotation angle; and a rotation angle changing portion configured to rotate the coupler main body to the target rotation angle based on the output rotation signal. When the railcar is stopped or when the railcar is traveling at a coupling speed, the control portion outputs the rotation signal to start rotating the coupler main body.

A coupler system includes: a coupler main body attached to a longitudinal direction end of a carbody of a railcar so as to be rotatable in a yaw direction; a curvature information acquiring portion configured to acquire curvature information of a track, the railcar being located on the track; a control portion configured to determine a target rotation angle of the coupler main body in accordance with the acquired curvature information and output a rotation signal regarding the determined target rotation angle; and a rotation angle changing portion configured to rotate the coupler main body to the target rotation angle based on the output rotation signal. When the railcar is stopped or when the railcar is traveling at a coupling speed, the control portion outputs the rotation signal to start rotating the coupler main body.