| 摘要 |
FIELD: medicine.SUBSTANCE: invention refers to transport engineering and may be used particularly to change a track in gear turn mainly actuated by running gear contrarotation of the vehicle borders, such as a wheelchair. The self-positioned dual wheel gear comprises a device for changing the gear track in the form of a pair of horizontally pivoted X-arms symmetrical about the longitudinal axis of the gear; the X-arms form a four-jaw antiparallel link mechanism with jaws coupled with axes equidistant in pairs along the pivoted X-arms in the median planes of the respective rims wheels with their self-actuated drive axes combined in a wheelspace box joint enabling the reverse rotation of axis ends in bearing assemblies of the respective wheels and the finger slide of the board wheel assembly in slide plate holes of the joint.EFFECT: possibility to change the parallel alignment of the running gear.1 cl, 3 dwg |
