| 摘要 |
PURPOSE:Provision of a steering gear at outward direction free from the kinetic limits of the support frame facilitates to dispense with interference by the support frame, to simplify the structure of the support frame, and to intensify the constitution. CONSTITUTION:Since a steering gear 39 is centrically attached to the upper part of a gear case 11 through a rocker 69 with use of a universal joint 49 supported by a substrate 1, the steering gear 39 can be provided free from the kinetic limits of the support frame 5. In consequence, it dispense with the needs of installing in the hemicyclic form with notched support frame 5 or bending partly a spot of cyclic form in order to avoid the steering gear 39 from interference by the support frame 5, but it can be formed into a plane cyclic figuration. |
