Patent ID: 8561547

Claim:
A track-guided vehicle wheel truck, comprising: two running wheels provided on an identical axis; two knuckles configured to be turned by two kingpins, respectively, and mounted on the two running wheels, respectively; four guide wheels each configured to roll (i) along one of both side surfaces, in a vehicle width direction, of a center guide, or (ii) along one of facing side surfaces, in the vehicle width direction, of two side guides, wherein the center guide is positioned in a middle of the vehicle in the vehicle width direction relative to the two running wheels on a running track, and the two side guides are positioned outside the vehicle in the vehicle width direction relative to the two running wheels, respectively; two guide frames arranged apart from each other in the vehicle width direction, arranged along a length direction of the vehicle, arranged between the running wheels in the vehicle width direction, and fixed to the knuckles, respectively; a tie rod arranged closer to a center of the vehicle in the length direction than the identical axis, and interlocking with the guide frames; four guide wheel receivers corresponding to the four guide wheels, respectively, and disposed between the two guide frames in the vehicle width direction, wherein two of the guide wheel receivers are on a vehicle end side and are farther from the center, in the length direction, of the vehicle than the identical axis, and the other two of the guide wheel receivers are on a center side and are closer to the center, in the length direction, of the vehicle than the identical axis; and a steering axle arranged along the vehicle width direction, and configured to turn the running wheels, the knuckles, and the guide frames by mounting the guide frames on the kingpins at both ends of the steering axle, respectively; wherein the guide wheels are installed on distal ends of the guide wheel receivers, respectively; wherein the running wheels are steerable along the center guide or the side guides; wherein each of the guide wheel receivers is attached to the corresponding guide frame so as to be switched between a first condition and a second condition; wherein, in the first condition, each of the guide wheel receivers extends from the corresponding guide frame toward the other guide frame in the vehicle width direction so that the guide wheels are rollable on the side surfaces of the center guide; and wherein, in the second condition, each of the guide wheel receivers extends from the corresponding guide frame away from the other guide frame in the vehicle width direction so that the guide wheels are rollable on the facing side surfaces of the side guides.