The end surface of the positioning screw cap of the equalizing axle is matched with an equalizing axle shell or the end surface of a swing arm.
平衡轴定位螺盖的端面与平衡轴壳或者摆臂的端面相配合。
2
The utility model can increase the swing assisting Angle and the swing assisting strength through adjusting the central adjusting screw bolt to meet the requirements of different patients.