TIRE TESTING MACHINE AND AXIS MISALIGNMENT MEASURING METHOD FOR TIRE TESTING MACHINE

摘要

Axial engagement means is provided in a tire testing machine. While a tire (T) is not installed, the axial engagement means moves at least either of spindles in the direction to separate them from each other with a lock member (18) engaged with an engaged section (40), the axial engagement means thereby causing the lock member (18) and the engagement section (40) to be engaged in a tightly contacting manner in the axial direction of the spindles. A second spindle (59) has a groove (71) extended in its periphery, in its circumferential direction, and in sliding contact with a lock member (60). The sliding surface between the lock member (60) and groove (71) functions as a receiving section (85) formed in a flat surface so as to receive a separating force between the spindles. A correction device is provided in the tire testing device, and when a spindle (117) rotates, the correction device corrects the gap between an inner ring of a spindle bearing and rolling bodies of the bearing or the gap between an outer ring of the spindle bearing and the rolling bodies. A refrigerant path (219) is provided in a preload bolt (202). The refrigerant path (219) is a hollow region passing that portion of the bolt which corresponds to at least an installation hole (209) of a detector (208), and a refrigerant can be supplied to the refrigerant path (219).