| 摘要 |
A railroad switch driving device (10) includes a driving motor (14); a speed reducing gear (18) including a group of pinion wheels set between the input terminal (32) and the output terminal (34) wherein said input terminal can be connected with rotatablely with the driving motor (14), said output terminal is suitable for connection with the control device of railroad switch, said speed reducing gear (18) includes further a rigid housing (50) having a base part (52) and lateral walls (56, 58) which set up from the base part (52) and restrict the supporting bearing of the pinion wheel group; aprotecting body case (12) for containing the driving motor (14) and the speed reducing gear (18), wherein the body case (12) comprises a bottom (22) and peripheral walls (24) fro delimitation of the bottom (22), said base part (52) of the housing is rigidly attached along the bottom (22) of said body case; and a holding arm (100) connected with one of the lateral walls (58) of the housing (50), from the stress leading-out point (122) set at the housing and far away from the base part (52) to the point (106) far away from the bottom (22) at the peripheral wall (24) of said body case (12). |
